/* roulang page: index */
:root{
  --ink:#14161A;
  --ink-2:#2A2E35;
  --paper:#F6F4EF;
  --surface:#FFFDF8;
  --line:#E4DFD3;
  --lime:#C9F53F;
  --lime-deep:#A8D42A;
  --steel:#6C7480;
  --ember:#FF6A2B;
  --radius-lg:20px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow-soft:0 1px 2px rgba(20,22,26,.05);
  --shadow-lift:0 18px 40px -12px rgba(20,22,26,.18);
  --container:1240px;
  --ease:cubic-bezier(.2,.8,.2,1);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  background:var(--paper);
  color:var(--ink);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit;}
input{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.mono{font-family:"Space Grotesk","Noto Sans SC",monospace;font-feature-settings:"tnum";}

/* ============ 导航 ============ */
.site-header{position:sticky;top:0;z-index:90;padding-top:16px;}
.site-header::before{
  content:"";position:absolute;inset:0;z-index:-1;
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  background:rgba(246,244,239,.72);
}
.nav-card{
  display:flex;align-items:center;gap:12px;
  height:72px;padding:0 14px 0 18px;
  border-radius:var(--radius-lg);
  background:var(--ink);
  border:1px solid rgba(255,255,255,.08);
  box-shadow:0 10px 30px -18px rgba(20,22,26,.6);
  position:relative;
  overflow:visible;
}
.nav-card::after{
  content:"";position:absolute;inset:0;border-radius:var(--radius-lg);pointer-events:none;
  background-image:radial-gradient(rgba(201,245,63,.14) 1px,transparent 1px);
  background-size:14px 14px;opacity:.5;
}
.logo{display:inline-flex;align-items:center;gap:10px;position:relative;z-index:2;flex-shrink:0;}
.logo-mark{
  width:30px;height:30px;border-radius:9px;
  background:linear-gradient(135deg,var(--lime) 0%,var(--lime-deep) 100%);
  display:grid;place-items:center;
  position:relative;
}
.logo-mark::before{content:"";width:12px;height:12px;border-radius:3px;background:var(--ink);}
.logo-text{color:#fff;font-size:18px;font-weight:800;letter-spacing:.01em;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto;position:relative;z-index:2;}
.nav-links a{
  display:inline-flex;align-items:center;height:40px;padding:0 10px;
  font-size:13px;font-weight:500;color:rgba(255,255,255,.70);
  border-radius:var(--radius-sm);
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
  white-space:nowrap;
}
.nav-links a:hover{background:rgba(201,245,63,.10);color:#fff;transform:translateY(-1px);}
.nav-links a.active{background:var(--lime);color:var(--ink);font-weight:700;}
.nav-right{display:flex;align-items:center;gap:10px;margin-left:10px;position:relative;z-index:2;}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:999px;font-weight:700;transition:all .22s var(--ease);}
.btn-primary{background:var(--ink);color:#fff;height:44px;padding:0 22px;font-size:15px;}
.btn-primary:hover{background:var(--lime);color:var(--ink);transform:translateY(-2px);}
.btn-primary:hover .arr{transform:translateX(4px);}
.btn-lime{background:var(--lime);color:var(--ink);height:44px;padding:0 22px;font-size:15px;}
.btn-lime:hover{filter:brightness(1.06);transform:translateY(-2px);}
.btn-ghost{background:transparent;border:1px solid rgba(20,22,26,.20);color:var(--ink);height:44px;padding:0 22px;font-size:15px;}
.btn-ghost:hover{border-color:var(--lime-deep);background:rgba(201,245,63,.10);transform:translateY(-2px);}
.btn-ghost-light{background:transparent;border:1px solid rgba(255,255,255,.22);color:#fff;height:44px;padding:0 22px;font-size:15px;}
.btn-ghost-light:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-2px);}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}
.arr{transition:transform .22s var(--ease);}
.nav-text-link{font-size:13px;color:rgba(255,255,255,.62);transition:color .22s var(--ease);white-space:nowrap;}
.nav-text-link:hover{color:var(--lime);}
.nav-burger{
  display:none;width:44px;height:44px;border-radius:var(--radius-sm);
  border:1px solid rgba(255,255,255,.16);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
  margin-left:auto;position:relative;z-index:2;
}
.nav-burger span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;transition:.24s var(--ease);}
.nav-burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-burger.open span:nth-child(2){opacity:0;}
.nav-burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.mobile-drawer{
  display:none;position:fixed;inset:88px 16px auto 16px;z-index:88;
  background:var(--ink-2);border:1px solid rgba(255,255,255,.10);
  border-radius:var(--radius-lg);padding:16px;
  box-shadow:var(--shadow-lift);
  max-height:calc(100vh - 120px);overflow-y:auto;
}
.mobile-drawer.open{display:block;}
.mobile-drawer a{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;padding:0 14px;border-radius:var(--radius-sm);
  color:rgba(255,255,255,.82);font-size:15px;font-weight:500;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.mobile-drawer a:hover,.mobile-drawer a.active{background:rgba(201,245,63,.14);color:var(--lime);border-color:transparent;}
.mobile-drawer .drawer-cta{margin-top:14px;width:100%;}
.drawer-note{font-size:12px;color:rgba(255,255,255,.45);text-align:center;margin-top:12px;letter-spacing:.04em;}

/* ============ Hero ============ */
.hero{position:relative;padding:76px 0 92px;overflow:hidden;}
.hero::before{
  content:"";position:absolute;top:-160px;right:-120px;width:640px;height:640px;
  background:radial-gradient(circle,rgba(201,245,63,.12) 0%,rgba(201,245,63,0) 68%);
  pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center;position:relative;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:"Space Grotesk",sans-serif;font-size:11px;font-weight:700;
  letter-spacing:.18em;text-transform:uppercase;color:var(--steel);
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--lime);border-radius:2px;}
.hero h1{
  font-size:clamp(2.4rem,4.6vw,3.7rem);
  line-height:1.08;font-weight:900;margin:18px 0 20px;letter-spacing:0;
}
.hero h1 .thin{font-weight:400;display:block;}
.ul-lime{border-bottom:4px solid var(--lime);padding-bottom:2px;}
.lead{font-size:17px;line-height:1.8;color:var(--ink-2);max-width:640px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:24px;font-size:13.5px;color:var(--steel);
}
.hero-meta span{display:inline-flex;align-items:center;gap:6px;}
.dot-sep{width:4px;height:4px;border-radius:50%;background:var(--line);}
.hero-rating{display:flex;align-items:center;gap:10px;margin-top:18px;font-size:13px;color:var(--steel);}
.stars{display:inline-flex;gap:3px;color:var(--lime-deep);font-size:14px;letter-spacing:2px;}
.hero-visual{position:relative;min-height:400px;display:flex;align-items:center;justify-content:center;}
.visual-back{
  position:absolute;inset:6% -6% 10% 12%;
  border-radius:26px;background-size:cover;background-position:center;
  opacity:.35;filter:saturate(.85);border:1px solid var(--line);
}
.visual-card{
  position:relative;z-index:2;width:100%;max-width:520px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;transform:rotate(-2deg);
  box-shadow:var(--shadow-lift);
}
.visual-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.visual-bar{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-top:1px solid var(--line);font-size:12px;color:var(--steel);}
.visual-bar strong{color:var(--ink);font-weight:700;}
.float-badge{
  position:absolute;z-index:3;background:var(--surface);border:1px solid var(--line);
  border-radius:999px;padding:8px 14px;font-size:12px;font-weight:700;color:var(--ink);
  box-shadow:var(--shadow-soft);animation:floaty 6s ease-in-out infinite;
}
.float-badge.b1{top:8%;left:2%;}
.float-badge.b2{bottom:12%;right:0;animation-delay:-3s;background:var(--ink);color:var(--lime);border-color:rgba(201,245,63,.4);}
@keyframes floaty{0%,100%{transform:translateY(0);}50%{transform:translateY(-7px);}}

/* ============ 价值条 ============ */
.value-strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(255,253,248,.6);}
.value-grid{display:grid;grid-template-columns:repeat(3,1fr);}
.value-item{padding:40px 32px;position:relative;}
.value-item+.value-item{border-left:1px solid var(--line);}
.value-num{font-family:"Space Grotesk",sans-serif;font-size:26px;font-weight:700;color:var(--lime-deep);letter-spacing:.04em;}
.value-item h3{font-size:17px;font-weight:700;margin:10px 0 8px;}
.value-item p{font-size:14px;color:var(--steel);line-height:1.7;}

/* ============ 通用板块 ============ */
.section{padding:96px 0;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:40px;flex-wrap:wrap;}
.sec-title{font-size:clamp(1.7rem,3.2vw,2.5rem);line-height:1.15;font-weight:700;margin-top:12px;}
.sec-desc{font-size:15px;color:var(--steel);max-width:560px;margin-top:12px;}
.text-link{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:700;color:var(--ink);border-bottom:2px solid var(--lime);padding-bottom:3px;transition:color .22s var(--ease);}
.text-link:hover{color:var(--lime-deep);}
.text-link:hover .arr{transform:translateX(4px);}

/* ============ 截图轮播 ============ */
.shots{background:var(--paper);}
.shot-track{
  display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 4px 22px;scrollbar-width:none;
}
.shot-track::-webkit-scrollbar{display:none;}
.shot-card{
  flex:0 0 calc((100% - 48px)/3);
  scroll-snap-align:start;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);overflow:hidden;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease);
}
.shot-card:nth-child(2){margin-top:24px;}
.shot-card:hover{border-color:var(--lime);box-shadow:var(--shadow-lift);transform:translateY(-3px);}
.shot-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.shot-card figcaption{padding:16px 18px;font-size:14px;color:var(--steel);}
.shot-card figcaption strong{display:block;color:var(--ink);font-size:15px;font-weight:700;margin-bottom:4px;}
.shot-controls{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-top:8px;flex-wrap:wrap;}
.shot-arrows{display:flex;gap:10px;}
.round-btn{
  width:44px;height:44px;border-radius:50%;border:1px solid var(--line);
  background:var(--surface);display:grid;place-items:center;color:var(--ink);
  transition:all .22s var(--ease);
}
.round-btn:hover{border-color:var(--lime);background:rgba(201,245,63,.14);}
.progress{flex:1;min-width:160px;height:3px;border-radius:3px;background:var(--line);overflow:hidden;}
.progress span{display:block;height:100%;width:33.33%;background:var(--lime);border-radius:3px;transition:width .32s var(--ease);}

/* ============ 系统要求 ============ */
.req{background:rgba(255,253,248,.65);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.req-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:start;}
.spec-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px 24px 20px;box-shadow:var(--shadow-soft);}
.spec-card+.spec-card{margin-top:20px;}
.spec-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--line);margin-bottom:6px;}
.spec-head h3{font-size:17px;font-weight:700;}
.tag{display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:8px;font-size:12px;font-weight:700;background:var(--lime);color:var(--ink);}
.tag-line{background:transparent;border:1px solid var(--line);color:var(--steel);font-weight:500;}
.spec-row{display:flex;justify-content:space-between;gap:16px;padding:13px 0;border-bottom:1px dashed var(--line);}
.spec-row:last-child{border-bottom:none;}
.spec-row dt{font-size:13px;color:var(--steel);flex:0 0 40%;}
.spec-row dd{margin:0;font-size:15px;color:var(--ink);text-align:right;font-weight:500;}
.notice{display:flex;gap:12px;margin-top:24px;padding:16px 18px;background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--lime);border-radius:var(--radius-sm);font-size:14px;color:var(--ink-2);}

/* ============ 评价墙 ============ */
.review-wall{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.review-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:22px;display:flex;flex-direction:column;gap:14px;
  transition:border-color .22s var(--ease);
}
.review-card:hover{border-color:var(--lime);}
.review-quote{
  grid-row:span 2;background:var(--ink);color:#fff;border-color:var(--ink);
  justify-content:space-between;position:relative;overflow:hidden;
}
.review-quote::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(201,245,63,.16) 1px,transparent 1px);
  background-size:16px 16px;opacity:.55;
}
.review-quote q{font-size:21px;line-height:1.6;font-weight:700;color:#fff;quotes:none;position:relative;z-index:2;}
.review-quote .qm{font-family:"Space Grotesk",serif;font-size:52px;line-height:1;color:var(--lime);position:relative;z-index:2;}
.review-quote .who{position:relative;z-index:2;font-size:13px;color:rgba(255,255,255,.66);}
.review-quote .who strong{display:block;color:#fff;font-size:15px;font-weight:700;margin-bottom:4px;}
.review-card p{font-size:14.5px;line-height:1.75;color:var(--ink-2);}
.review-foot{display:flex;align-items:center;gap:10px;margin-top:auto;}
.avatar{width:36px;height:36px;border-radius:50%;object-fit:cover;border:1px solid var(--line);}
.review-foot .name{font-size:13.5px;font-weight:700;}
.pill{display:inline-flex;align-items:center;height:22px;padding:0 9px;border-radius:999px;border:1px solid var(--line);font-size:11.5px;color:var(--steel);}

/* ============ 最新信息 ============ */
.news{background:rgba(255,253,248,.65);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.news-card{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;position:relative;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease);
}
.news-card:hover{border-color:var(--lime);box-shadow:var(--shadow-lift);transform:translateY(-2px);}
.news-card:hover h3{text-decoration:underline;text-decoration-color:var(--lime);text-decoration-thickness:3px;text-underline-offset:5px;}
.news-thumb{position:relative;overflow:hidden;}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.news-thumb .badge{
  position:absolute;top:12px;left:12px;
  background:var(--lime);color:var(--ink);font-size:12px;font-weight:700;
  padding:4px 10px;border-radius:8px;
}
.news-body{padding:18px 20px 16px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-body h3{font-size:1.15rem;font-weight:700;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-body p{font-size:14px;color:var(--steel);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--steel);margin-top:auto;padding-top:6px;}
.news-card.featured{grid-column:span 2;flex-direction:row;}
.news-card.featured .news-thumb{flex:0 0 46%;}
.news-card.featured .news-thumb img{height:100%;aspect-ratio:auto;min-height:250px;}
.news-card.featured .news-body{padding:26px 28px;}
.news-card.featured .news-body h3{font-size:1.5rem;-webkit-line-clamp:2;}
.news-card.featured .news-body p{-webkit-line-clamp:3;font-size:15px;}
.news-empty{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  padding:56px 24px;background:var(--surface);border:1px dashed var(--line);border-radius:var(--radius-lg);
  color:var(--steel);font-size:15px;text-align:center;
}
.news-empty svg{width:40px;height:40px;color:var(--steel);opacity:.6;}

/* ============ 下载 CTA ============ */
.dl-wrap{padding:92px 0;}
.dl-panel{
  position:relative;background:var(--ink);border-radius:24px;
  padding:48px;overflow:hidden;
  display:grid;grid-template-columns:1.35fr .65fr;gap:40px;align-items:center;
  border:1px solid rgba(255,255,255,.08);
}
.dl-panel::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(201,245,63,.16) 1px,transparent 1px);
  background-size:18px 18px;opacity:.5;
}
.dl-panel h2{font-size:clamp(1.6rem,3vw,2.2rem);line-height:1.2;color:#fff;font-weight:900;position:relative;z-index:2;}
.dl-panel p{color:rgba(255,255,255,.66);font-size:15px;margin-top:12px;max-width:520px;position:relative;z-index:2;}
.dl-buttons{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;position:relative;z-index:2;}
.dl-buttons .btn{flex:0 1 auto;min-width:150px;}
.dl-note{margin-top:16px;font-size:13px;color:rgba(255,255,255,.45);position:relative;z-index:2;}
.qr-box{position:relative;z-index:2;display:flex;flex-direction:column;align-items:center;gap:12px;}
.qr-square{
  width:160px;height:160px;border-radius:14px;background:var(--surface);padding:10px;
  display:grid;grid-template-columns:repeat(5,1fr);grid-template-rows:repeat(5,1fr);gap:4px;
}
.qr-square i{display:block;background:var(--ink);border-radius:2px;opacity:.85;}
.qr-square i:nth-child(3n){background:var(--lime-deep);}
.qr-square i:nth-child(4n+1){opacity:.16;}
.qr-cap{font-size:13px;color:rgba(255,255,255,.6);}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;font-size:17px;font-weight:700;transition:color .22s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--lime-deep);}
.faq-icon{
  flex:0 0 28px;width:28px;height:28px;border-radius:50%;border:1.5px solid var(--lime-deep);
  display:grid;place-items:center;position:relative;transition:background .22s var(--ease);
}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--lime-deep);border-radius:2px;transition:transform .24s var(--ease),opacity .24s var(--ease);}
.faq-icon::before{width:11px;height:1.6px;}
.faq-icon::after{width:1.6px;height:11px;}
.faq-item[open] .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-item[open] .faq-icon{background:rgba(201,245,63,.18);}
.faq-answer{padding:0 4px 24px;font-size:15px;line-height:1.8;color:var(--steel);max-width:820px;}

/* ============ 订阅 ============ */
.sub-band{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:34px;display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center;}
.sub-band h2{font-size:1.5rem;font-weight:700;}
.sub-band p{font-size:14.5px;color:var(--steel);margin-top:8px;}
.sub-form{display:flex;gap:10px;flex-wrap:wrap;}
.sub-form input{
  flex:1;min-width:200px;height:48px;padding:0 16px;border-radius:var(--radius-sm);
  border:1px solid var(--line);background:var(--paper);color:var(--ink);font-size:15px;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.sub-form input:focus{outline:none;border-color:var(--lime);box-shadow:0 0 0 3px rgba(201,245,63,.20);}
.form-hint{font-size:12px;color:var(--steel);width:100%;margin-top:2px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:64px 0 0;position:relative;overflow:hidden;}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(201,245,63,.10) 1px,transparent 1px);
  background-size:20px 20px;opacity:.5;
}
.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,.75fr);gap:40px;position:relative;z-index:2;}
.footer-brand .logo-text{font-size:19px;}
.footer-brand p{font-size:14px;color:rgba(255,255,255,.55);margin-top:14px;max-width:300px;line-height:1.8;}
.footer-col h4{font-size:13px;text-transform:uppercase;letter-spacing:.16em;color:rgba(255,255,255,.42);font-weight:700;margin-bottom:16px;font-family:"Space Grotesk",sans-serif;}
.footer-col a{display:block;font-size:14px;color:rgba(255,255,255,.72);padding:7px 0;transition:color .2s var(--ease),transform .2s var(--ease);}
.footer-col a:hover{color:var(--lime);transform:translateX(2px);}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:22px 0 28px;font-size:13px;color:rgba(255,255,255,.45);position:relative;z-index:2;
}
.to-top{
  width:40px;height:40px;border-radius:50%;border:1px solid rgba(255,255,255,.18);
  display:grid;place-items:center;color:#fff;transition:all .22s var(--ease);
}
.to-top:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-2px);}

/* ============ 响应式 ============ */
@media (max-width:1100px){
  .nav-links{display:none;}
  .nav-right .nav-text-link{display:none;}
  .nav-burger{display:flex;}
  .mobile-drawer{display:none;}
}
@media (max-width:1023px){
  .hero{padding:56px 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-visual{min-height:auto;margin-top:8px;}
  .visual-card{transform:rotate(-1.5deg);}
  .shot-card{flex:0 0 calc((100% - 24px)/1.6);}
  .review-wall{grid-template-columns:repeat(2,1fr);}
  .review-quote{grid-row:span 1;grid-column:span 2;}
  .req-grid{grid-template-columns:1fr;gap:32px;}
  .dl-panel{grid-template-columns:1fr;padding:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .sub-band{grid-template-columns:1fr;padding:26px;}
  .news-card.featured{flex-direction:column;}
  .news-card.featured .news-thumb{flex:none;}
  .news-card.featured .news-thumb img{min-height:0;aspect-ratio:16/9;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .section{padding:64px 0;}
  .value-grid{grid-template-columns:1fr;}
  .value-item+.value-item{border-left:none;border-top:1px solid var(--line);}
  .value-item{padding:28px 4px;}
  .news-grid{grid-template-columns:1fr;}
  .news-card.featured{grid-column:span 1;}
  .review-wall{grid-template-columns:1fr;}
  .review-quote{grid-column:span 1;}
  .hero-actions .btn{flex:1 1 100%;}
  .dl-buttons .btn{flex:1 1 100%;}
  .footer-grid{grid-template-columns:1fr;}
  .spec-row dd{text-align:right;}
}
@media (max-width:520px){
  .hero h1{font-size:2rem;}
  .shot-card{flex:0 0 86%;}
  .nav-card{height:64px;padding:0 12px;}
  .logo-text{font-size:16px;}
  .mobile-drawer{inset:80px 12px auto 12px;}
  .dl-panel{padding:26px;}
  .sec-head{gap:16px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
  .float-badge{animation:none;}
}

/* roulang page: category1 */
:root{
    --ink:#14161A;
    --ink-2:#2A2E35;
    --paper:#F6F4EF;
    --surface:#FFFDF8;
    --line:#E4DFD3;
    --lime:#C9F53F;
    --lime-deep:#A8D42A;
    --steel:#6C7480;
    --ember:#FF6A2B;
    --radius-lg:20px;
    --radius-md:16px;
    --radius-sm:12px;
    --shadow-soft:0 1px 2px rgba(20,22,26,.05);
    --shadow-lift:0 18px 40px -12px rgba(20,22,26,.18);
    --ease:cubic-bezier(.2,.8,.2,1);
    --font-cn:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
    --font-num:"Space Grotesk","Inter","Noto Sans SC",sans-serif;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:var(--font-cn);
    font-size:16px;
    line-height:1.75;
    color:var(--ink);
    background:var(--paper);
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  img{max-width:100%;display:block;height:auto;}
  a{color:inherit;text-decoration:none;}
  button{font-family:inherit;cursor:pointer;}
  input,button,textarea{font-size:inherit;}
  h1,h2,h3,h4,p,ul,ol,dl,dd{margin:0;}
  ul,ol{padding:0;list-style:none;}
  ::selection{background:var(--lime);color:var(--ink);}

  :focus-visible{
    outline:2px solid var(--lime-deep);
    outline-offset:3px;
    border-radius:6px;
  }

  .container{
    width:100%;
    max-width:1240px;
    margin:0 auto;
    padding:0 24px;
  }

  /* ---------- header / nav ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    padding:16px 0 0;
    background:rgba(246,244,239,.72);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
  }
  .nav-card{
    background:var(--ink);
    border:1px solid rgba(255,255,255,.08);
    border-radius:var(--radius-lg);
    min-height:72px;
    display:flex;
    align-items:center;
    gap:18px;
    padding:12px 18px;
    box-shadow:0 10px 30px -18px rgba(20,22,26,.7);
    position:relative;
    overflow:hidden;
  }
  .nav-card::after{
    content:"";
    position:absolute;
    inset:0;
    background-image:radial-gradient(rgba(201,245,63,.16) 1px,transparent 1px);
    background-size:18px 18px;
    opacity:.5;
    pointer-events:none;
  }
  .logo{
    display:inline-flex;
    align-items:center;
    gap:10px;
    position:relative;
    z-index:2;
    flex:none;
  }
  .logo-mark{
    width:26px;height:26px;
    border-radius:8px;
    background:var(--lime);
    display:inline-block;
    position:relative;
    box-shadow:inset 0 0 0 3px rgba(20,22,26,.9);
  }
  .logo-mark::after{
    content:"";
    position:absolute;
    left:7px;top:7px;
    width:12px;height:12px;
    background:var(--ink);
    border-radius:3px;
    transform:rotate(45deg);
  }
  .logo-text{
    font-size:18px;
    font-weight:800;
    letter-spacing:.02em;
    color:#fff;
    white-space:nowrap;
  }
  .nav-links{
    display:flex;
    align-items:center;
    gap:6px;
    margin-left:auto;
    position:relative;
    z-index:2;
    flex-wrap:wrap;
  }
  .nav-links a{
    display:inline-flex;
    align-items:center;
    height:40px;
    padding:0 13px;
    border-radius:var(--radius-sm);
    font-size:14px;
    font-weight:500;
    color:rgba(255,255,255,.74);
    transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
    white-space:nowrap;
  }
  .nav-links a:hover{
    background:rgba(201,245,63,.1);
    color:#fff;
    transform:translateY(-1px);
  }
  .nav-links a.active{
    background:var(--lime);
    color:var(--ink);
    font-weight:700;
  }
  .nav-cta{
    position:relative;
    z-index:2;
    flex:none;
    display:inline-flex;
    align-items:center;
    gap:8px;
    height:44px;
    padding:0 20px;
    border-radius:999px;
    background:var(--lime);
    color:var(--ink);
    font-size:14px;
    font-weight:700;
    transition:transform .22s var(--ease),background .22s var(--ease);
  }
  .nav-cta:hover{background:#d7ff5c;transform:translateY(-2px);}
  .nav-toggle{
    display:none;
    position:relative;
    z-index:2;
    margin-left:auto;
    width:44px;height:44px;
    border-radius:var(--radius-sm);
    border:1px solid rgba(255,255,255,.18);
    background:transparent;
    color:#fff;
    align-items:center;
    justify-content:center;
  }
  .nav-toggle span{
    display:block;width:18px;height:2px;background:#fff;position:relative;
  }
  .nav-toggle span::before,.nav-toggle span::after{
    content:"";position:absolute;left:0;width:18px;height:2px;background:#fff;
  }
  .nav-toggle span::before{top:-6px;}
  .nav-toggle span::after{top:6px;}

  .drawer{
    display:none;
    margin:12px 0 0;
    background:var(--ink);
    border:1px solid rgba(255,255,255,.08);
    border-radius:var(--radius-lg);
    padding:14px;
  }
  .drawer.open{display:block;}
  .drawer a{
    display:flex;
    align-items:center;
    min-height:56px;
    padding:0 16px;
    border-radius:var(--radius-sm);
    color:rgba(255,255,255,.8);
    font-size:15px;
    font-weight:500;
    border-bottom:1px solid rgba(255,255,255,.06);
  }
  .drawer a:last-of-type{border-bottom:none;}
  .drawer a.active{
    background:var(--lime);
    color:var(--ink);
    font-weight:700;
  }
  .drawer .drawer-cta{
    margin-top:12px;
    display:flex;
    align-items:center;
    justify-content:center;
    min-height:48px;
    border-radius:999px;
    background:var(--lime);
    color:var(--ink);
    font-weight:700;
    border-bottom:none;
  }
  .drawer small{
    display:block;
    padding:10px 16px 0;
    font-size:12px;
    color:rgba(255,255,255,.4);
    letter-spacing:.1em;
  }

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:10px;
    height:52px;
    padding:0 26px;
    border-radius:999px;
    font-size:15px;
    font-weight:700;
    border:1px solid transparent;
    transition:transform .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease),box-shadow .22s var(--ease);
  }
  .btn .arrow{transition:transform .22s var(--ease);}
  .btn:hover .arrow{transform:translateX(4px);}
  .btn-primary{background:var(--ink);color:#fff;}
  .btn-primary:hover{background:var(--lime);color:var(--ink);transform:translateY(-2px);box-shadow:var(--shadow-lift);}
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{
    background:transparent;
    color:var(--ink);
    border-color:rgba(20,22,26,.2);
  }
  .btn-ghost:hover{border-color:var(--lime-deep);background:rgba(201,245,63,.12);transform:translateY(-2px);}
  .btn-lime{background:var(--lime);color:var(--ink);}
  .btn-lime:hover{background:#d7ff5c;transform:translateY(-2px);box-shadow:0 18px 40px -16px rgba(201,245,63,.6);}
  .btn-outline-light{
    background:transparent;
    color:#fff;
    border-color:rgba(255,255,255,.24);
  }
  .btn-outline-light:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-2px);}
  .btn-mid{height:44px;padding:0 20px;font-size:14px;}

  /* ---------- hero ---------- */
  .hero{
    position:relative;
    padding:56px 0 88px;
    overflow:hidden;
  }
  .hero::before{
    content:"";
    position:absolute;
    top:-180px;right:-140px;
    width:620px;height:620px;
    background:radial-gradient(circle,rgba(201,245,63,.18),rgba(201,245,63,0) 68%);
    pointer-events:none;
  }
  .breadcrumb{
    display:flex;
    align-items:center;
    gap:8px;
    font-size:13px;
    color:var(--steel);
    margin-bottom:28px;
    flex-wrap:wrap;
  }
  .breadcrumb a{color:var(--steel);transition:color .2s var(--ease);}
  .breadcrumb a:hover{color:var(--ink);}
  .breadcrumb .sep{opacity:.6;}
  .breadcrumb .current{color:var(--ink);font-weight:500;}

  .hero-grid{
    display:grid;
    grid-template-columns:1.15fr .85fr;
    gap:56px;
    align-items:center;
  }
  .eyebrow{
    display:inline-flex;
    align-items:center;
    gap:10px;
    font-family:var(--font-num);
    font-size:12px;
    letter-spacing:.18em;
    text-transform:uppercase;
    color:var(--steel);
    margin-bottom:18px;
  }
  .eyebrow::before{
    content:"";
    width:26px;height:2px;
    background:var(--lime-deep);
    display:inline-block;
  }
  .hero h1{
    font-size:clamp(2.2rem,4.6vw,3.5rem);
    line-height:1.1;
    font-weight:900;
    letter-spacing:0;
    margin-bottom:20px;
  }
  .hero h1 .hl{
    position:relative;
    display:inline-block;
  }
  .hero h1 .hl::after{
    content:"";
    position:absolute;
    left:0;right:0;bottom:2px;
    height:4px;
    background:var(--lime);
    border-radius:2px;
    opacity:.85;
  }
  .hero-sub{
    font-size:17px;
    line-height:1.75;
    color:var(--ink-2);
    max-width:560px;
    margin-bottom:28px;
  }
  .hero-actions{
    display:flex;
    gap:14px;
    flex-wrap:wrap;
    margin-bottom:22px;
  }
  .hero-meta{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:10px;
    font-size:14px;
    color:var(--steel);
    margin-bottom:18px;
  }
  .hero-meta .dot{opacity:.5;}
  .rating{
    display:flex;
    align-items:center;
    gap:10px;
    font-size:13px;
    color:var(--steel);
  }
  .stars{
    display:inline-flex;
    gap:3px;
  }
  .stars i{
    width:14px;height:14px;
    background:var(--lime-deep);
    display:inline-block;
    clip-path:polygon(50% 0%,61% 35%,98% 35%,68% 57%,79% 91%,50% 70%,21% 91%,32% 57%,2% 35%,39% 35%);
  }

  .hero-visual{
    position:relative;
    min-height:380px;
  }
  .hero-visual .backdrop{
    position:absolute;
    inset:18px -8px 0 28px;
    border-radius:26px;
    background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    opacity:.35;
    filter:saturate(.7);
    border:1px solid var(--line);
  }
  .shot{
    position:relative;
    z-index:2;
    border-radius:22px;
    overflow:hidden;
    background:var(--surface);
    border:1px solid var(--line);
    box-shadow:var(--shadow-lift);
    transform:rotate(-2deg);
    transition:transform .4s var(--ease);
  }
  .shot:hover{transform:rotate(-1deg) translateY(-4px);}
  .shot img{
    width:100%;
    aspect-ratio:16/11;
    object-fit:cover;
  }
  .float-badge{
    position:absolute;
    z-index:3;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:999px;
    padding:8px 14px;
    font-family:var(--font-num);
    font-size:12px;
    font-weight:700;
    letter-spacing:.06em;
    color:var(--ink);
    box-shadow:var(--shadow-soft);
    animation:floaty 6s ease-in-out infinite;
  }
  .float-badge.b1{top:-12px;left:-6px;}
  .float-badge.b2{bottom:24px;right:-10px;animation-delay:1.4s;background:var(--ink);color:#fff;border-color:var(--ink);}
  .float-badge.b3{bottom:-14px;left:36px;animation-delay:.7s;background:var(--lime);border-color:var(--lime);}
  @keyframes floaty{
    0%,100%{transform:translateY(0);}
    50%{transform:translateY(-8px);}
  }

  /* ---------- section base ---------- */
  .section{padding:88px 0;}
  .section.tight{padding:64px 0;}
  .section-head{
    display:flex;
    align-items:flex-end;
    justify-content:space-between;
    gap:32px;
    margin-bottom:44px;
    flex-wrap:wrap;
  }
  .kicker{
    font-family:var(--font-num);
    font-size:12px;
    letter-spacing:.18em;
    text-transform:uppercase;
    color:var(--lime-deep);
    font-weight:700;
    margin-bottom:12px;
    display:block;
  }
  .section-head h2{
    font-size:clamp(1.6rem,3vw,2.3rem);
    line-height:1.2;
    font-weight:900;
  }
  .section-head p{
    font-size:15px;
    color:var(--steel);
    max-width:460px;
    margin-top:12px;
  }
  .link-more{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-size:14px;
    font-weight:700;
    color:var(--ink);
    border-bottom:2px solid var(--lime);
    padding-bottom:3px;
    transition:color .2s var(--ease),gap .2s var(--ease);
  }
  .link-more:hover{color:var(--lime-deep);gap:12px;}

  /* ---------- install steps ---------- */
  .steps{
    display:grid;
    gap:22px;
  }
  .step{
    display:grid;
    grid-template-columns:64px 1fr;
    gap:22px;
    align-items:start;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-lg);
    padding:26px 28px;
    transition:border-color .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease);
    position:relative;
  }
  .step:hover{
    border-color:var(--lime);
    box-shadow:var(--shadow-lift);
    transform:translateY(-2px);
  }
  .step-num{
    font-family:var(--font-num);
    font-size:26px;
    font-weight:700;
    color:var(--lime-deep);
    line-height:1;
    padding-top:4px;
    letter-spacing:.02em;
  }
  .step-body h3{
    font-size:1.1rem;
    font-weight:700;
    margin-bottom:6px;
  }
  .step-body p{
    font-size:15px;
    color:var(--steel);
    line-height:1.7;
  }
  .step-tag{
    display:inline-flex;
    align-items:center;
    height:22px;
    padding:0 10px;
    border-radius:8px;
    background:rgba(201,245,63,.28);
    color:var(--ink);
    font-size:11px;
    font-weight:700;
    letter-spacing:.06em;
    margin-left:10px;
    vertical-align:middle;
  }

  /* ---------- version compare ---------- */
  .spec-grid{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:24px;
  }
  .spec-card{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-lg);
    padding:28px;
    transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
  }
  .spec-card:hover{border-color:var(--lime);box-shadow:var(--shadow-lift);}
  .spec-card .card-top{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:14px;
    padding-bottom:18px;
    border-bottom:1px solid var(--line);
    margin-bottom:6px;
  }
  .spec-card h3{
    font-size:1.15rem;
    font-weight:700;
  }
  .pill{
    display:inline-flex;
    align-items:center;
    height:26px;
    padding:0 12px;
    border-radius:999px;
    font-size:12px;
    font-weight:700;
    background:var(--ink);
    color:#fff;
    letter-spacing:.04em;
  }
  .pill.lime{background:var(--lime);color:var(--ink);}
  .pill.ghost{background:transparent;border:1px solid var(--line);color:var(--steel);font-weight:500;}
  .spec-row{
    display:grid;
    grid-template-columns:120px 1fr;
    gap:16px;
    align-items:baseline;
    padding:14px 0;
    border-bottom:1px solid var(--line);
  }
  .spec-row:last-child{border-bottom:none;padding-bottom:0;}
  .spec-label{
    font-size:13px;
    color:var(--steel);
  }
  .spec-value{
    font-size:15px;
    color:var(--ink);
    font-weight:500;
  }
  .spec-value.num{font-family:var(--font-num);letter-spacing:.02em;}

  .notice{
    display:flex;
    gap:14px;
    align-items:flex-start;
    background:var(--surface);
    border:1px solid var(--line);
    border-left:3px solid var(--lime);
    border-radius:var(--radius-sm);
    padding:16px 20px;
    margin-top:24px;
    font-size:14px;
    color:var(--ink-2);
  }
  .notice strong{color:var(--ink);}

  /* ---------- download panel ---------- */
  .dl-panel{
    position:relative;
    background:var(--ink);
    border-radius:24px;
    padding:48px;
    color:#fff;
    overflow:hidden;
    border:1px solid rgba(255,255,255,.08);
  }
  .dl-panel::after{
    content:"";
    position:absolute;
    inset:0;
    background-image:radial-gradient(rgba(201,245,63,.2) 1px,transparent 1px);
    background-size:20px 20px;
    opacity:.35;
    pointer-events:none;
  }
  .dl-grid{
    position:relative;
    z-index:2;
    display:grid;
    grid-template-columns:1fr auto;
    gap:44px;
    align-items:center;
  }
  .dl-panel h2{
    font-size:clamp(1.5rem,2.6vw,2.1rem);
    font-weight:900;
    line-height:1.2;
    margin-bottom:12px;
  }
  .dl-panel p{
    font-size:15px;
    color:rgba(255,255,255,.66);
    max-width:520px;
    margin-bottom:26px;
  }
  .dl-actions{
    display:flex;
    gap:12px;
    flex-wrap:wrap;
    margin-bottom:18px;
  }
  .dl-actions .btn{height:48px;padding:0 22px;font-size:14px;}
  .dl-note{
    font-size:13px;
    color:rgba(255,255,255,.45);
    font-family:var(--font-num);
    letter-spacing:.04em;
  }
  .qr{
    width:160px;
    background:var(--surface);
    border-radius:14px;
    padding:10px;
    text-align:center;
    position:relative;
    z-index:2;
  }
  .qr-grid{
    width:100%;
    aspect-ratio:1/1;
    border-radius:8px;
    background:
      linear-gradient(90deg,var(--ink) 25%,transparent 25% 50%,var(--ink) 50% 62%,transparent 62%),
      linear-gradient(0deg,var(--ink) 18%,transparent 18% 34%,var(--ink) 34% 46%,transparent 46% 70%,var(--ink) 70% 82%,transparent 82%);
    background-color:var(--surface);
    opacity:.9;
  }
  .qr span{
    display:block;
    margin-top:8px;
    font-size:12px;
    color:var(--ink);
    font-weight:700;
  }

  /* ---------- faq ---------- */
  .faq-list{
    border-top:1px solid var(--line);
  }
  .faq-item{
    border-bottom:1px solid var(--line);
  }
  .faq-item summary{
    list-style:none;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
    padding:22px 0;
    font-size:17px;
    font-weight:700;
    cursor:pointer;
    transition:color .2s var(--ease);
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary:hover{color:var(--lime-deep);}
  .faq-item summary::after{
    content:"+";
    flex:none;
    width:30px;height:30px;
    border-radius:999px;
    border:1px solid var(--lime-deep);
    color:var(--lime-deep);
    display:inline-flex;
    align-items:center;
    justify-content:center;
    font-size:18px;
    font-weight:400;
    line-height:1;
    transition:transform .24s var(--ease),background .24s var(--ease);
  }
  .faq-item[open] summary::after{
    content:"−";
    background:var(--lime);
    border-color:var(--lime);
    color:var(--ink);
  }
  .faq-a{
    padding:0 0 24px;
    font-size:15px;
    line-height:1.8;
    color:var(--steel);
    max-width:800px;
  }

  /* ---------- footer ---------- */
  .site-footer{
    background:var(--ink);
    color:rgba(255,255,255,.72);
    padding:64px 0 28px;
    margin-top:24px;
    border-top:1px solid rgba(255,255,255,.08);
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.6fr 1fr 1fr 1fr;
    gap:40px;
    padding-bottom:40px;
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .footer-brand .logo{margin-bottom:16px;}
  .footer-brand p{
    font-size:14px;
    line-height:1.7;
    color:rgba(255,255,255,.55);
    max-width:280px;
  }
  .footer-col h4{
    font-size:13px;
    font-weight:700;
    letter-spacing:.14em;
    text-transform:uppercase;
    color:rgba(255,255,255,.42);
    margin-bottom:16px;
  }
  .footer-col a{
    display:block;
    font-size:14px;
    color:rgba(255,255,255,.72);
    padding:7px 0;
    transition:color .2s var(--ease),transform .2s var(--ease);
  }
  .footer-col a:hover{color:var(--lime);transform:translateX(2px);}
  .footer-bottom{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
    padding-top:24px;
    font-size:13px;
    color:rgba(255,255,255,.42);
    flex-wrap:wrap;
  }
  .to-top{
    width:40px;height:40px;
    border-radius:999px;
    border:1px solid rgba(255,255,255,.2);
    display:inline-flex;
    align-items:center;
    justify-content:center;
    color:#fff;
    transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
  }
  .to-top:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-2px);}

  /* ---------- reveal ---------- */
  .reveal{
    opacity:0;
    transform:translateY(12px);
    transition:opacity .4s var(--ease),transform .4s var(--ease);
  }
  .reveal.in{opacity:1;transform:none;}

  /* ---------- responsive ---------- */
  @media (max-width:1023px){
    .nav-links,.nav-cta{display:none;}
    .nav-toggle{display:inline-flex;}
    .hero-grid{grid-template-columns:1fr;gap:52px;}
    .hero-visual{min-height:320px;max-width:520px;}
    .spec-grid{grid-template-columns:1fr;}
    .dl-grid{grid-template-columns:1fr;}
    .qr{margin:0 auto;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  }
  @media (max-width:768px){
    .container{padding:0 20px;}
    .section{padding:60px 0;}
    .hero{padding:36px 0 64px;}
    .hero-actions .btn{flex:1 1 100%;}
    .step{grid-template-columns:1fr;gap:10px;padding:22px;}
    .step-num{font-size:22px;}
    .dl-panel{padding:32px 22px;}
    .spec-row{grid-template-columns:100px 1fr;}
    .section-head{margin-bottom:30px;}
  }
  @media (max-width:520px){
    .footer-grid{grid-template-columns:1fr;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
    .hero-meta{font-size:13px;}
    .float-badge{font-size:11px;padding:6px 10px;}
    .hero-visual{min-height:260px;}
    .dl-actions .btn{width:100%;}
  }
  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{
      animation:none !important;
      transition:none !important;
      scroll-behavior:auto !important;
    }
    .reveal{opacity:1;transform:none;}
  }

/* roulang page: article */
:root{
    --ink:#14161A;
    --ink-2:#2A2E35;
    --paper:#F6F4EF;
    --surface:#FFFDF8;
    --line:#E4DFD3;
    --lime:#C9F53F;
    --lime-deep:#A8D42A;
    --steel:#6C7480;
    --ember:#FF6A2B;
    --r-lg:20px;
    --r-md:16px;
    --r-sm:12px;
    --shadow-sm:0 1px 2px rgba(20,22,26,.05);
    --shadow-hover:0 18px 40px -12px rgba(20,22,26,.18);
    --container:1240px;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
    background:var(--paper);
    color:var(--ink);
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
  }
  a{color:inherit;text-decoration:none;}
  img{max-width:100%;display:block;}
  button{font:inherit;cursor:pointer;border:0;background:none;}
  h1,h2,h3,h4{margin:0;line-height:1.25;}
  p{margin:0;}
  ul,ol{margin:0;padding:0;list-style:none;}
  :focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:4px;}
  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
  .mono{font-family:"Space Grotesk","Noto Sans SC",monospace;}

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    padding:16px 0 0;
    background:rgba(246,244,239,.88);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
  }
  .nav-card{
    position:relative;
    display:flex;
    align-items:center;
    gap:18px;
    min-height:72px;
    padding:10px 12px 10px 18px;
    background:var(--ink);
    border:1px solid rgba(201,245,63,.18);
    border-radius:var(--r-lg);
    box-shadow:0 16px 36px -26px rgba(20,22,26,.85);
  }
  .logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
  .logo-mark{
    position:relative;
    width:22px;height:22px;
    border-radius:7px;
    background:var(--lime);
    display:inline-block;
  }
  .logo-mark::after{
    content:"";position:absolute;inset:6px;border-radius:3px;background:var(--ink);
  }
  .logo-text{font-size:18px;font-weight:800;color:#fff;letter-spacing:.01em;white-space:nowrap;}
  .nav-links{
    display:flex;align-items:center;justify-content:center;
    gap:4px;flex:1;flex-wrap:wrap;
  }
  .nav-links a{
    display:inline-flex;align-items:center;
    height:40px;padding:0 12px;
    border-radius:var(--r-sm);
    font-size:14px;font-weight:500;
    color:rgba(255,255,255,.72);
    transition:background .22s cubic-bezier(.2,.8,.2,1),color .22s,transform .22s;
  }
  .nav-links a:hover{
    background:rgba(201,245,63,.08);
    color:#fff;
    transform:translateY(-1px);
  }
  .nav-links a.active{
    background:var(--lime);
    color:var(--ink);
    font-weight:700;
  }
  .nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
  .nav-toggle{
    display:none;
    width:44px;height:44px;
    align-items:center;justify-content:center;
    border:1px solid rgba(255,255,255,.18);
    border-radius:var(--r-sm);
    color:#fff;
    transition:border-color .22s,background .22s;
  }
  .nav-toggle:hover{border-color:var(--lime);background:rgba(201,245,63,.1);}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 22px;
    border-radius:999px;
    font-size:15px;font-weight:700;
    transition:transform .22s cubic-bezier(.2,.8,.2,1),background .22s,color .22s,border-color .22s,box-shadow .22s;
  }
  .btn-lime{background:var(--lime);color:var(--ink);}
  .btn-lime:hover{background:#d6fa63;transform:translateY(-2px);}
  .btn-primary{background:var(--ink);color:#fff;}
  .btn-primary:hover{background:var(--lime);color:var(--ink);transform:translateY(-2px);}
  .btn-ghost{background:transparent;border:1px solid rgba(20,22,26,.2);color:var(--ink);}
  .btn-ghost:hover{border-color:var(--lime-deep);background:rgba(201,245,63,.14);transform:translateY(-2px);}
  .btn-line{background:transparent;border:1px solid rgba(255,255,255,.24);color:#fff;}
  .btn-line:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-2px);}
  .btn-sm{height:36px;padding:0 16px;font-size:13px;}
  .btn:active{transform:translateY(0);}

  /* ---------- 面包屑 & 文章头部 ---------- */
  .article-hero{
    position:relative;
    padding:44px 0 0;
    background:radial-gradient(680px 320px at 88% -14%, rgba(201,245,63,.18), transparent 70%);
  }
  .breadcrumb{
    display:flex;align-items:center;flex-wrap:wrap;gap:8px;
    font-size:13px;color:var(--steel);
    margin-bottom:26px;
  }
  .breadcrumb a{transition:color .2s;}
  .breadcrumb a:hover{color:var(--lime-deep);}
  .breadcrumb .sep{color:var(--line);}
  .breadcrumb .current{color:var(--ink);font-weight:500;}
  .article-head{max-width:860px;}
  .article-tag{
    display:inline-flex;align-items:center;gap:6px;
    background:var(--lime);color:var(--ink);
    font-size:12px;font-weight:700;letter-spacing:.06em;
    padding:5px 12px;border-radius:8px;
  }
  .article-title{
    font-size:clamp(1.9rem,4.4vw,2.9rem);
    line-height:1.22;
    font-weight:900;
    letter-spacing:0;
    margin:18px 0 18px;
    color:var(--ink);
  }
  .article-meta{
    display:flex;align-items:center;flex-wrap:wrap;gap:10px;
    font-size:13px;color:var(--steel);
    padding-bottom:26px;
  }
  .article-meta .sep{width:4px;height:4px;border-radius:50%;background:var(--line);}
  .article-meta .mono{letter-spacing:.02em;}

  /* ---------- 布局 ---------- */
  .article-body-section{padding:8px 0 0;}
  .article-layout{
    display:grid;
    grid-template-columns:minmax(0,1fr);
    gap:48px;
    padding-top:26px;
  }
  .article-main{
    min-width:0;
    border-top:1px solid var(--line);
    padding-top:36px;
  }
  .article-side{display:flex;flex-direction:column;gap:20px;min-width:0;}
  @media (min-width:1200px){
    .article-layout{
      grid-template-columns:minmax(0,760px) 300px;
      gap:56px;
      justify-content:center;
    }
    .article-side{position:sticky;top:112px;align-self:start;}
  }

  /* ---------- 正文排版 ---------- */
  .prose{
    font-size:17px;
    line-height:1.85;
    color:var(--ink-2);
    overflow-wrap:break-word;
  }
  .prose > *:first-child{margin-top:0;}
  .prose p{margin:18px 0;}
  .prose h2{
    position:relative;
    font-size:clamp(1.25rem,2.4vw,1.6rem);
    font-weight:700;
    color:var(--ink);
    margin:44px 0 16px;
    padding-left:16px;
  }
  .prose h2::before{
    content:"";position:absolute;left:0;top:.28em;
    width:4px;height:1em;border-radius:3px;background:var(--lime);
  }
  .prose h3{
    font-size:1.2rem;font-weight:700;color:var(--ink);
    margin:30px 0 12px;
  }
  .prose h4{font-size:1.02rem;font-weight:700;color:var(--ink);margin:24px 0 10px;}
  .prose strong{color:var(--ink);font-weight:700;}
  .prose a{
    color:var(--ink);
    text-decoration:underline;
    text-decoration-color:var(--lime);
    text-decoration-thickness:2px;
    text-underline-offset:4px;
    transition:color .2s,text-decoration-color .2s;
  }
  .prose a:hover{color:var(--lime-deep);text-decoration-color:var(--lime-deep);}
  .prose ul,.prose ol{margin:18px 0;padding-left:0;}
  .prose ul li{position:relative;padding-left:24px;margin:10px 0;}
  .prose ul li::before{
    content:"";position:absolute;left:0;top:.62em;
    width:8px;height:8px;border-radius:2px;background:var(--lime);
  }
  .prose ol{list-style:decimal;padding-left:22px;}
  .prose ol li{margin:10px 0;padding-left:4px;}
  .prose ol li::marker{color:var(--lime-deep);font-weight:700;}
  .prose blockquote{
    margin:26px 0;
    padding:20px 22px;
    background:var(--paper);
    border-left:3px solid var(--lime);
    border-radius:0 var(--r-sm) var(--r-sm) 0;
    font-size:17px;
    color:var(--ink);
  }
  .prose blockquote p:first-child{margin-top:0;}
  .prose blockquote p:last-child{margin-bottom:0;}
  .prose img{
    width:100%;height:auto;
    border-radius:14px;
    margin:26px 0 10px;
    border:1px solid var(--line);
  }
  .prose figure{margin:26px 0;}
  .prose figcaption{
    font-size:12.5px;color:var(--steel);text-align:center;margin-top:10px;
  }
  .prose table{
    width:100%;border-collapse:collapse;
    font-size:15px;margin:26px 0;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-sm);
    overflow:hidden;
  }
  .prose th{
    text-align:left;font-weight:700;color:var(--ink);
    background:var(--paper);
    padding:12px 14px;
    border-bottom:1px solid var(--line);
  }
  .prose td{
    padding:12px 14px;
    border-bottom:1px solid var(--line);
    color:var(--ink-2);
  }
  .prose tr:last-child td{border-bottom:0;}
  .prose hr{border:0;border-top:1px solid var(--line);margin:36px 0;}

  /* ---------- 标签 & 上下篇 ---------- */
  .post-tags{
    display:flex;flex-wrap:wrap;align-items:center;gap:10px;
    margin-top:46px;padding-top:28px;
    border-top:1px solid var(--line);
  }
  .post-tags .label{font-size:12px;color:var(--steel);letter-spacing:.16em;text-transform:uppercase;margin-right:4px;}
  .tag{
    font-size:13px;
    padding:6px 14px;
    border-radius:999px;
    border:1px solid var(--line);
    color:var(--steel);
    background:transparent;
    transition:border-color .22s,color .22s,background .22s;
  }
  .tag:hover{border-color:var(--lime-deep);color:var(--ink);background:rgba(201,245,63,.14);}
  .next-prev{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:16px;
    margin-top:26px;
  }
  .np-card{
    display:block;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-md);
    padding:18px 20px;
    transition:border-color .22s,box-shadow .22s,transform .22s;
  }
  .np-card:hover{border-color:var(--lime);box-shadow:var(--shadow-hover);transform:translateY(-3px);}
  .np-card .np-label{font-size:12px;color:var(--steel);letter-spacing:.08em;}
  .np-card .np-title{
    margin-top:8px;font-size:15px;font-weight:700;color:var(--ink);
    line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .back-link{
    display:inline-flex;align-items:center;gap:8px;
    margin-top:28px;font-size:14px;font-weight:600;color:var(--ink);
    transition:color .2s,gap .22s;
  }
  .back-link:hover{color:var(--lime-deep);gap:12px;}

  /* ---------- 侧栏 ---------- */
  .side-card{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-md);
    padding:20px;
    box-shadow:var(--shadow-sm);
  }
  .side-card h3{
    display:flex;align-items:center;gap:9px;
    font-size:15px;font-weight:700;color:var(--ink);
    margin:0 0 16px;
  }
  .side-card h3::before{
    content:"";width:6px;height:16px;border-radius:2px;background:var(--lime);
  }
  .author-row{display:flex;align-items:center;gap:12px;}
  .author-avatar{
    width:44px;height:44px;border-radius:50%;
    overflow:hidden;flex-shrink:0;
    border:1px solid var(--line);
    background:var(--paper);
  }
  .author-avatar img{width:100%;height:100%;object-fit:cover;}
  .author-name{font-size:15px;font-weight:700;color:var(--ink);}
  .author-desc{font-size:13px;color:var(--steel);margin-top:12px;line-height:1.7;}
  .hot-list li + li{border-top:1px solid var(--line);}
  .hot-list a{
    display:flex;gap:12px;align-items:flex-start;
    padding:12px 0;
    transition:color .2s;
  }
  .hot-list a:hover .hot-title{color:var(--lime-deep);}
  .hot-num{
    font-family:"Space Grotesk",monospace;
    font-size:14px;font-weight:700;color:var(--lime-deep);
    line-height:1.6;flex-shrink:0;width:20px;
  }
  .hot-title{
    font-size:14px;line-height:1.6;color:var(--ink-2);font-weight:500;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
    transition:color .2s;
  }
  .side-cta{
    background:var(--ink);
    border:1px solid rgba(201,245,63,.18);
    border-radius:var(--r-md);
    padding:22px 20px;
    position:relative;
    overflow:hidden;
  }
  .side-cta::before{
    content:"";position:absolute;inset:0;
    background-image:radial-gradient(rgba(255,255,255,.06) 1px, transparent 1px);
    background-size:16px 16px;
    pointer-events:none;
  }
  .side-cta h3{color:#fff;font-size:16px;margin:0 0 8px;position:relative;}
  .side-cta p{color:rgba(255,255,255,.62);font-size:13px;line-height:1.7;margin:0 0 16px;position:relative;}
  .side-cta .btn{width:100%;position:relative;}

  /* ---------- 相关推荐 ---------- */
  .related-section{padding:84px 0 0;}
  .section-head{
    display:flex;align-items:flex-end;justify-content:space-between;
    gap:20px;margin-bottom:28px;flex-wrap:wrap;
  }
  .section-head h2{
    font-size:clamp(1.4rem,2.6vw,1.9rem);
    font-weight:700;color:var(--ink);
  }
  .section-head .eyebrow{
    font-family:"Space Grotesk",monospace;
    font-size:11px;letter-spacing:.18em;text-transform:uppercase;
    color:var(--steel);margin-bottom:8px;display:block;
  }
  .section-head .more{
    display:inline-flex;align-items:center;gap:8px;
    font-size:14px;font-weight:600;color:var(--ink);
    transition:color .2s,gap .22s;
  }
  .section-head .more:hover{color:var(--lime-deep);gap:12px;}
  .related-grid{
    display:grid;
    grid-template-columns:minmax(0,1fr);
    gap:24px;
  }
  @media (min-width:640px){.related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
  @media (min-width:1024px){.related-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
  .rel-card{
    display:flex;flex-direction:column;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-md);
    overflow:hidden;
    box-shadow:var(--shadow-sm);
    transition:border-color .22s,box-shadow .22s,transform .22s;
  }
  .rel-card:hover{border-color:var(--lime);box-shadow:var(--shadow-hover);transform:translateY(-3px);}
  .rel-thumb{
    position:relative;
    aspect-ratio:16/9;
    overflow:hidden;
    background:var(--paper);
  }
  .rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.2,.8,.2,1);}
  .rel-card:hover .rel-thumb img{transform:scale(1.03);}
  .rel-badge{
    position:absolute;left:12px;top:12px;
    background:var(--lime);color:var(--ink);
    font-size:12px;font-weight:700;
    padding:4px 10px;border-radius:8px;
  }
  .rel-body{padding:16px 18px 18px;display:flex;flex-direction:column;flex:1;}
  .rel-title{
    font-size:1.04rem;font-weight:700;line-height:1.5;color:var(--ink);
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
    transition:color .2s;
  }
  .rel-card:hover .rel-title{color:var(--lime-deep);}
  .rel-meta{display:flex;align-items:center;gap:8px;margin-top:auto;padding-top:14px;font-size:13px;color:var(--steel);}
  .rel-meta .sep{width:4px;height:4px;border-radius:50%;background:var(--line);}

  /* ---------- 下载 CTA ---------- */
  .cta-band{padding:84px 0 0;}
  .cta-inner{
    position:relative;
    overflow:hidden;
    display:flex;align-items:center;justify-content:space-between;
    gap:32px;flex-wrap:wrap;
    background:var(--ink);
    border:1px solid rgba(201,245,63,.16);
    border-radius:24px;
    padding:40px;
  }
  .cta-inner::before{
    content:"";position:absolute;inset:0;
    background-image:radial-gradient(rgba(255,255,255,.05) 1px, transparent 1px);
    background-size:18px 18px;
    pointer-events:none;
  }
  .cta-copy{position:relative;max-width:560px;}
  .cta-copy .eyebrow{
    font-family:"Space Grotesk",monospace;
    font-size:11px;letter-spacing:.18em;text-transform:uppercase;
    color:var(--lime);display:block;margin-bottom:10px;
  }
  .cta-copy h2{
    color:#fff;font-size:clamp(1.4rem,2.6vw,2rem);
    font-weight:900;line-height:1.25;margin-bottom:10px;
  }
  .cta-copy p{color:rgba(255,255,255,.66);font-size:15px;line-height:1.7;}
  .cta-actions{position:relative;display:flex;gap:12px;flex-wrap:wrap;}

  /* ---------- 空态 ---------- */
  .empty-state{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-lg);
    padding:56px 28px;
    text-align:center;
  }
  .empty-state .icon{
    width:52px;height:52px;margin:0 auto 18px;
    border-radius:14px;
    border:1px solid var(--line);
    display:flex;align-items:center;justify-content:center;
    color:var(--steel);font-size:22px;
  }
  .empty-state h2{font-size:1.35rem;font-weight:700;margin-bottom:10px;}
  .empty-state p{font-size:15px;color:var(--steel);margin-bottom:22px;}

  /* ---------- 页脚 ---------- */
  .site-footer{
    margin-top:96px;
    background:var(--ink);
    color:rgba(255,255,255,.7);
    padding:64px 0 24px;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.6fr 1fr 1fr 1fr;
    gap:36px;
    padding-bottom:40px;
  }
  .footer-brand .logo{margin-bottom:14px;}
  .footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:280px;}
  .footer-col{display:flex;flex-direction:column;gap:12px;}
  .footer-col h4{
    font-size:13px;font-weight:700;letter-spacing:.12em;
    text-transform:uppercase;color:#fff;margin-bottom:4px;
  }
  .footer-col a{
    font-size:14px;color:rgba(255,255,255,.66);
    transition:color .2s,transform .2s;
  }
  .footer-col a:hover{color:var(--lime);transform:translateX(3px);}
  .footer-bottom{
    display:flex;align-items:center;justify-content:space-between;
    gap:16px;flex-wrap:wrap;
    padding-top:22px;
    border-top:1px solid rgba(255,255,255,.08);
    font-size:13px;color:rgba(255,255,255,.5);
  }
  .to-top{
    width:40px;height:40px;flex-shrink:0;
    display:inline-flex;align-items:center;justify-content:center;
    border:1px solid rgba(255,255,255,.18);
    border-radius:50%;
    color:#fff;font-size:15px;
    transition:border-color .22s,color .22s,transform .22s;
  }
  .to-top:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-2px);}

  /* ---------- 入场动效 ---------- */
  .reveal{opacity:0;transform:translateY(12px);transition:opacity .4s ease,transform .4s cubic-bezier(.2,.8,.2,1);}
  .reveal.in{opacity:1;transform:none;}

  /* ---------- 响应式 ---------- */
  @media (max-width:1023px){
    .nav-toggle{display:inline-flex;}
    .nav-links{
      position:absolute;
      left:0;right:0;
      top:calc(100% + 10px);
      display:none;
      flex-direction:column;
      align-items:stretch;
      gap:4px;
      padding:12px;
      background:var(--ink-2);
      border:1px solid rgba(255,255,255,.08);
      border-radius:var(--r-lg);
      box-shadow:0 24px 48px -20px rgba(20,22,26,.7);
      z-index:70;
    }
    .nav-links.open{display:flex;}
    .nav-links a{height:52px;font-size:15px;justify-content:flex-start;padding:0 16px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  }
  @media (max-width:767px){
    .container{padding:0 20px;}
    .article-hero{padding-top:32px;}
    .article-title{margin:16px 0 14px;}
    .next-prev{grid-template-columns:minmax(0,1fr);}
    .cta-inner{padding:28px 22px;}
    .cta-actions{width:100%;}
    .cta-actions .btn{flex:1 1 auto;min-width:140px;}
    .related-section,.cta-band{padding-top:64px;}
    .site-footer{margin-top:72px;padding-top:48px;}
    .prose{font-size:16px;line-height:1.85;}
  }
  @media (max-width:639px){
    .nav-actions .btn-sm{display:none;}
    .footer-grid{grid-template-columns:1fr;gap:24px;}
    .footer-brand p{max-width:none;}
    .article-meta{font-size:12.5px;}
  }
  @media (prefers-reduced-motion: reduce){
    *{animation:none !important;transition:none !important;}
    .reveal{opacity:1;transform:none;}
    html{scroll-behavior:auto;}
  }

/* roulang page: category2 */
:root{
  --ink:#14161A;
  --ink-2:#2A2E35;
  --paper:#F6F4EF;
  --surface:#FFFDF8;
  --line:#E4DFD3;
  --lime:#C9F53F;
  --lime-deep:#A8D42A;
  --steel:#6C7480;
  --ember:#FF6A2B;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --shadow-1:0 1px 2px rgba(20,22,26,.05);
  --shadow-2:0 18px 40px -12px rgba(20,22,26,.18);
  --ease:cubic-bezier(.2,.8,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;}
.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.mono{font-family:"Space Grotesk",ui-monospace,monospace;font-variant-numeric:tabular-nums;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  padding:14px 0 0;
  background:rgba(246,244,239,.82);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.nav-shell{
  max-width:1240px;
  margin:0 auto;
  padding:0 20px;
  min-height:72px;
  border-radius:var(--r-lg);
  background:var(--ink);
  border:1px solid rgba(201,245,63,.16);
  background-image:radial-gradient(rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:18px 18px;
  display:flex;
  align-items:center;
  gap:18px;
  box-shadow:0 10px 30px -18px rgba(20,22,26,.55);
}
.logo{
  display:inlin-flex;
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.logo-mark{
  width:22px;height:22px;
  border-radius:6px;
  background:var(--lime);
  position:relative;
  display:inline-block;
  box-shadow:0 0 0 1px rgba(201,245,63,.45);
}
.logo-mark::after{
  content:"";
  position:absolute;
  inset:6px;
  border-radius:2px;
  background:var(--ink);
}
.logo-text{
  font-size:18px;
  font-weight:800;
  letter-spacing:0;
  color:#fff;
  white-space:nowrap;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
  flex-wrap:nowrap;
}
.nav-links a{
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 12px;
  border-radius:10px;
  font-size:14px;
  font-weight:500;
  color:rgba(255,255,255,.72);
  white-space:nowrap;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.nav-links a:hover{
  background:rgba(201,245,63,.10);
  color:#fff;
  transform:translateY(-1px);
}
.nav-links a.active{
  background:var(--lime);
  color:var(--ink);
  font-weight:700;
}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid rgba(255,255,255,.18);
  background:transparent;
  color:#fff;
  align-items:center;
  justify-content:center;
  font-size:18px;
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.nav-toggle:hover{border-color:var(--lime);background:rgba(201,245,63,.1);}
.nav-drawer{
  display:none;
  max-width:1240px;
  margin:10px auto 0;
  padding:14px 20px 20px;
  border-radius:var(--r-lg);
  background:var(--ink);
  border:1px solid rgba(201,245,63,.16);
}
.nav-drawer.open{display:block;}
.nav-drawer a{
  display:flex;
  align-items:center;
  height:52px;
  padding:0 14px;
  border-radius:12px;
  color:rgba(255,255,255,.8);
  font-size:15px;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.nav-drawer a.active{color:var(--ink);background:var(--lime);font-weight:700;}
.nav-drawer .drawer-note{
  margin-top:14px;
  font-size:12px;
  color:rgba(255,255,255,.42);
  letter-spacing:.06em;
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:52px;
  padding:0 26px;
  border-radius:999px;
  font-size:15px;
  font-weight:700;
  border:1px solid transparent;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn .arrow{transition:transform .22s var(--ease);}
.btn:hover .arrow{transform:translateX(4px);}
.btn:active{transform:translateY(0);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-md{height:44px;padding:0 22px;font-size:15px;}
.btn-primary{background:var(--ink);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--lime);color:var(--ink);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-ghost{background:transparent;color:var(--ink);border-color:rgba(20,22,26,.2);}
.btn-ghost:hover{border-color:var(--lime-deep);background:rgba(201,245,63,.08);transform:translateY(-2px);}
.btn-lime{background:var(--lime);color:var(--ink);}
.btn-lime:hover{background:#d6fa63;transform:translateY(-2px);box-shadow:0 18px 34px -16px rgba(201,245,63,.6);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.24);}
.btn-outline-light:hover{border-color:var(--lime);background:rgba(201,245,63,.1);transform:translateY(-2px);}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:700;color:var(--ink);
  border-bottom:2px solid var(--lime);
  padding-bottom:2px;
  transition:color .22s var(--ease),border-color .22s var(--ease);
}
.text-link:hover{color:var(--lime-deep);border-color:var(--lime-deep);}
.text-link:hover .arrow{transform:translateX(4px);}
.text-link .arrow{transition:transform .22s var(--ease);}

/* ============ 通用板块 ============ */
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-head{margin-bottom:40px;max-width:760px;}
.eyebrow{
  font-family:"Space Grotesk",monospace;
  font-size:11px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--steel);
  margin-bottom:12px;
}
h2{
  font-size:clamp(1.7rem,3.2vw,2.5rem);
  line-height:1.15;
  font-weight:700;
  margin-bottom:14px;
}
h3{font-size:1.125rem;font-weight:700;line-height:1.4;}
.lede{font-size:16px;color:var(--steel);line-height:1.8;max-width:720px;}

/* ============ Hero ============ */
.hero{
  padding:52px 0 72px;
  position:relative;
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;
  top:-160px;right:-120px;
  width:620px;height:620px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(201,245,63,.22),transparent 68%);
  pointer-events:none;
}
.hero-grid{
  display:grid;
  grid-template-columns:1.08fr .92fr;
  gap:48px;
  align-items:center;
  position:relative;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px;}
.tag-pill{
  display:inline-flex;align-items:center;gap:6px;
  height:30px;padding:0 12px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--surface);
  font-size:12px;font-weight:500;color:var(--steel);
}
.tag-pill.hot{background:var(--lime);border-color:var(--lime);color:var(--ink);font-weight:700;}
h1{
  font-size:clamp(2.1rem,5vw,3.5rem);
  line-height:1.1;
  font-weight:900;
  letter-spacing:0;
  margin-bottom:18px;
}
h1 .kw{
  position:relative;
  white-space:nowrap;
}
h1 .kw::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-6px;
  height:4px;
  background:var(--lime);
  border-radius:2px;
}
.hero-sub{
  font-size:17px;
  line-height:1.8;
  color:var(--ink-2);
  max-width:560px;
  margin-bottom:26px;
}
.hero-btns{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:20px;}
.hero-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--steel);
  margin-bottom:14px;
}
.hero-meta .dot{width:4px;height:4px;border-radius:50%;background:#C9CFD6;}
.hero-rate{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--steel);}
.stars{display:inline-flex;gap:3px;color:var(--lime-deep);font-size:14px;letter-spacing:1px;}
.hero-visual{position:relative;min-height:300px;}
.hero-back{
  position:absolute;
  inset:-8% -6% -8% 6%;
  border-radius:26px;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  opacity:.3;
  transform:rotate(3deg) scale(.96);
  filter:grayscale(.2);
}
.hero-shot{
  position:relative;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:var(--surface);
  padding:12px;
  transform:rotate(-2deg);
  box-shadow:var(--shadow-2);
}
.hero-shot img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:14px;
}
.float-badge{
  position:absolute;
  display:inline-flex;align-items:center;gap:6px;
  height:34px;padding:0 14px;
  border-radius:999px;
  background:var(--surface);
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
  font-size:12px;font-weight:700;color:var(--ink);
  animation:floaty 6s var(--ease) infinite;
}
.float-badge b{color:var(--lime-deep);font-family:"Space Grotesk",monospace;}
.fb-1{top:6%;left:-14px;}
.fb-2{bottom:10%;right:-10px;animation-delay:1.6s;}
@keyframes floaty{
  0%,100%{transform:translateY(0);}
  50%{transform:translateY(-7px);}
}

/* ============ 交替图文 ============ */
.feat-list{display:flex;flex-direction:column;gap:56px;}
.feat-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
}
.feat-row.reverse .feat-media{order:2;}
.feat-media{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--surface);
  box-shadow:var(--shadow-1);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.feat-media:hover{border-color:var(--lime);box-shadow:var(--shadow-2);}
.feat-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.feat-index{
  position:absolute;
  top:14px;left:14px;
  display:inline-flex;align-items:center;justify-content:center;
  min-width:44px;height:30px;
  padding:0 10px;
  border-radius:8px;
  background:var(--lime);
  color:var(--ink);
  font-family:"Space Grotesk",monospace;
  font-size:13px;font-weight:700;
}
.feat-body h3{font-size:clamp(1.25rem,2.2vw,1.6rem);margin-bottom:12px;}
.feat-body p{font-size:16px;color:var(--ink-2);line-height:1.85;margin-bottom:16px;max-width:560px;}
.feat-points{display:flex;flex-direction:column;gap:10px;margin-bottom:20px;}
.feat-points li{
  position:relative;
  padding-left:20px;
  font-size:14.5px;
  color:var(--steel);
  line-height:1.7;
}
.feat-points li::before{
  content:"";
  position:absolute;
  left:0;top:9px;
  width:8px;height:8px;
  border-radius:2px;
  background:var(--lime);
}

/* ============ 胶囊标签墙 ============ */
.chip-wall{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  padding:32px;
  border-radius:var(--r-lg);
  background:var(--surface);
  border:1px solid var(--line);
}
.chip{
  display:inline-flex;align-items:center;
  height:38px;padding:0 16px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--paper);
  font-size:14px;color:var(--ink-2);
  transition:border-color .22s var(--ease),background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.chip:hover{
  border-color:var(--lime-deep);
  background:rgba(201,245,63,.16);
  color:var(--ink);
  transform:translateY(-2px);
}
.chip.on{background:var(--ink);border-color:var(--ink);color:#fff;}

/* ============ 流程编号条 ============ */
.flow{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  border-top:1px solid var(--line);
  padding-top:32px;
}
.flow li{
  padding:0 24px 0 0;
  border-right:1px solid var(--line);
}
.flow li:last-child{border-right:none;padding-right:0;}
.flow li + li{padding-left:24px;}
.flow-num{
  display:block;
  font-family:"Space Grotesk",monospace;
  font-size:26px;
  font-weight:700;
  color:var(--lime-deep);
  margin-bottom:10px;
}
.flow h3{font-size:16px;margin-bottom:8px;}
.flow p{font-size:14px;color:var(--steel);line-height:1.7;}

/* ============ 资讯卡 ============ */
.news-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.news-card{
  display:flex;
  flex-direction:column;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:var(--surface);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease);
}
.news-card:hover{border-color:var(--lime);box-shadow:var(--shadow-2);transform:translateY(-3px);}
.news-thumb{position:relative;overflow:hidden;}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s var(--ease);}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.news-badge{
  position:absolute;
  top:12px;left:12px;
  height:26px;
  display:inline-flex;align-items:center;
  padding:0 10px;
  border-radius:8px;
  background:var(--lime);
  color:var(--ink);
  font-size:12px;
  font-weight:700;
}
.news-body{padding:20px 20px 18px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-body h3{font-size:1.05rem;line-height:1.5;}
.news-card:hover .news-body h3{text-decoration:underline;text-decoration-color:var(--lime);text-underline-offset:4px;text-decoration-thickness:2px;}
.news-body p{font-size:14px;color:var(--steel);line-height:1.7;}
.news-meta{
  margin-top:auto;
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--steel);
}
.news-meta .dot{width:3px;height:3px;border-radius:50%;background:#C9CFD6;}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:22px 0;
  font-size:17px;
  font-weight:700;
  cursor:pointer;
  list-style:none;
  transition:color .22s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";
  flex-shrink:0;
  width:28px;height:28px;
  border-radius:50%;
  border:1px solid var(--lime-deep);
  color:var(--lime-deep);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;
  line-height:1;
  transition:background .22s var(--ease),color .22s var(--ease);
}
.faq-item[open] summary::after{content:"−";background:var(--lime);border-color:var(--lime);color:var(--ink);}
.faq-item summary:hover{color:var(--lime-deep);}
.faq-answer{
  padding:0 0 24px;
  font-size:15px;
  line-height:1.8;
  color:var(--steel);
  max-width:780px;
}

/* ============ 深色 CTA ============ */
.cta-panel{
  border-radius:24px;
  background:var(--ink);
  color:#fff;
  padding:48px;
  background-image:radial-gradient(rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:18px 18px;
  border:1px solid rgba(201,245,63,.16);
  display:grid;
  grid-template-columns:1fr auto;
  gap:40px;
  align-items:center;
}
.cta-panel h2{color:#fff;margin-bottom:12px;}
.cta-panel p{color:rgba(255,255,255,.66);font-size:15px;line-height:1.8;max-width:560px;margin-bottom:24px;}
.cta-btns{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:16px;}
.cta-note{font-size:12.5px;color:rgba(255,255,255,.45);}
.cta-qr{
  width:160px;
  background:var(--surface);
  border-radius:14px;
  padding:8px;
  color:var(--ink);
  text-align:center;
}
.cta-qr .qr-box{
  width:100%;
  aspect-ratio:1/1;
  border-radius:8px;
  background:
    linear-gradient(135deg,rgba(201,245,63,.55),rgba(20,22,26,.06)),
    repeating-linear-gradient(0deg,rgba(20,22,26,.18) 0 4px,transparent 4px 8px),
    repeating-linear-gradient(90deg,rgba(20,22,26,.18) 0 4px,transparent 4px 8px);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;
}
.cta-qr span{display:block;font-size:12px;color:var(--steel);margin-top:8px;}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:88px;
  background:var(--ink);
  color:rgba(255,255,255,.72);
  padding:64px 0 28px;
  background-image:radial-gradient(rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:20px 20px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.footer-brand .logo{margin-bottom:14px;}
.footer-brand .logo-text{color:#fff;}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.55);max-width:280px;}
.footer-col h4{
  font-size:13px;
  font-weight:700;
  letter-spacing:.06em;
  color:#fff;
  margin-bottom:16px;
}
.footer-col a{
  display:block;
  font-size:14px;
  color:rgba(255,255,255,.6);
  padding:6px 0;
  transition:color .22s var(--ease),transform .22s var(--ease);
}
.footer-col a:hover{color:var(--lime);transform:translateX(2px);}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding-top:24px;
  font-size:13px;
  color:rgba(255,255,255,.42);
  flex-wrap:wrap;
}
.to-top{
  width:40px;height:40px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.2);
  display:inline-flex;align-items:center;justify-content:center;
  color:#fff;
  transition:border-color .22s var(--ease),color .22s var(--ease),background .22s var(--ease);
}
.to-top:hover{border-color:var(--lime);color:var(--lime);background:rgba(201,245,63,.08);}

/* ============ 动效 ============ */
.js .reveal{opacity:0;transform:translateY(12px);transition:opacity .4s var(--ease),transform .4s var(--ease);}
.js .reveal.in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1100px){
  .nav-links a{padding:0 9px;font-size:13px;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-shell{gap:12px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-visual{min-height:auto;max-width:560px;}
  .feat-row{grid-template-columns:1fr;gap:26px;}
  .feat-row.reverse .feat-media{order:0;}
  .flow{grid-template-columns:repeat(2,1fr);row-gap:28px;}
  .flow li{border-right:none;padding:0 16px 0 0;}
  .flow li + li{padding-left:0;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .cta-panel{grid-template-columns:1fr;padding:36px;}
  .cta-qr{width:140px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:639px){
  .container{padding-left:20px;padding-right:20px;}
  .section{padding:56px 0;}
  .section-tight{padding:44px 0;}
  .hero{padding:32px 0 52px;}
  h1{font-size:clamp(1.9rem,8vw,2.5rem);}
  h1 .kw{white-space:normal;}
  .hero-btns .btn{width:100%;}
  .btn{height:48px;}
  .chip-wall{padding:20px;}
  .chip{height:36px;font-size:13px;padding:0 13px;}
  .flow{grid-template-columns:1fr;}
  .flow li{padding:0 0 20px;border-bottom:1px solid var(--line);border-right:none;}
  .flow li:last-child{border-bottom:none;padding-bottom:0;}
  .flow li + li{padding-left:0;padding-top:4px;}
  .news-grid{grid-template-columns:1fr;}
  .cta-panel{padding:28px 22px;}
  .cta-btns .btn{width:100%;}
  .news-body{padding:18px 16px 16px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .float-badge{display:none;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .js .reveal{opacity:1;transform:none;}
}

/* roulang page: category3 */
:root{
  --ink:#14161A;
  --ink-2:#2A2E35;
  --paper:#F6F4EF;
  --surface:#FFFDF8;
  --line:#E4DFD3;
  --lime:#C9F53F;
  --lime-deep:#A8D42A;
  --steel:#6C7480;
  --ember:#FF6A2B;
  --radius-lg:20px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow-rest:0 1px 2px rgba(20,22,26,.05);
  --shadow-hover:0 18px 40px -12px rgba(20,22,26,.18);
  --ease:cubic-bezier(.2,.8,.2,1);
}
.page-body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
.page-body a{color:inherit;text-decoration:none}
.page-body button{font-family:inherit}
.page-body img{max-width:100%;height:auto;display:block}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.mono{font-family:"Space Grotesk",Inter,system-ui,sans-serif;font-variant-numeric:tabular-nums}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:8px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  padding:16px 0 8px;
  background:linear-gradient(180deg,rgba(246,244,239,.94),rgba(246,244,239,.72));
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.nav-card{
  background:var(--ink);
  border:1px solid var(--ink-2);
  border-radius:var(--radius-lg);
  min-height:72px;
  display:flex;align-items:center;gap:16px;
  padding:0 16px 0 20px;
  box-shadow:0 10px 30px -18px rgba(20,22,26,.55);
}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none}
.logo-mark{
  width:24px;height:24px;border-radius:7px;background:var(--lime);
  position:relative;display:inline-block;flex:none;
}
.logo-mark::after{
  content:"";position:absolute;left:6px;right:6px;top:9px;height:5px;
  background:var(--ink);border-radius:2px;
}
.logo-text{font-size:18px;font-weight:800;letter-spacing:.01em;color:#fff;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{
  display:inline-flex;align-items:center;height:40px;padding:0 11px;
  border-radius:var(--radius-sm);font-size:13.5px;font-weight:500;
  color:rgba(255,255,255,.72);
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
  white-space:nowrap;
}
.nav-links a:hover{background:rgba(201,245,63,.10);color:#fff;transform:translateY(-1px)}
.nav-links a.active{background:var(--lime);color:var(--ink);font-weight:700}
.nav-cta{
  display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 20px;
  border-radius:999px;background:var(--lime);color:var(--ink);
  font-size:14px;font-weight:700;flex:none;
  transition:filter .2s var(--ease),transform .2s var(--ease);
}
.nav-cta:hover{filter:brightness(1.06);transform:translateY(-2px)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--radius-sm);
  border:1px solid rgba(255,255,255,.18);background:transparent;color:#fff;
  align-items:center;justify-content:center;cursor:pointer;flex:none;
}
.nav-toggle span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:#fff;border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.mobile-drawer{
  position:fixed;inset:0;z-index:80;display:none;
  background:rgba(20,22,26,.55);
}
.mobile-drawer.open{display:block}
.drawer-panel{
  position:absolute;left:16px;right:16px;top:16px;
  background:var(--ink);border:1px solid var(--ink-2);border-radius:var(--radius-lg);
  padding:20px;
  max-height:calc(100vh - 32px);overflow:auto;
}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.drawer-close{
  width:40px;height:40px;border-radius:var(--radius-sm);border:1px solid rgba(255,255,255,.18);
  background:transparent;color:#fff;font-size:18px;line-height:1;cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:16px}
.drawer-nav a{
  display:flex;align-items:center;height:56px;padding:0 16px;border-radius:var(--radius-sm);
  color:rgba(255,255,255,.82);font-size:16px;font-weight:500;
  border:1px solid rgba(255,255,255,.06);
}
.drawer-nav a.active{background:var(--lime);color:var(--ink);font-weight:700;border-color:var(--lime)}
.drawer-cta{display:flex;width:100%}
.drawer-note{margin:14px 0 0;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:rgba(255,255,255,.42)}

/* ---------- hero ---------- */
.hero-page{
  position:relative;overflow:hidden;
  padding:56px 0 76px;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:right center;
  background-repeat:no-repeat;
}
.hero-page::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(96deg,rgba(246,244,239,.98) 0%,rgba(246,244,239,.95) 44%,rgba(246,244,239,.72) 74%,rgba(246,244,239,.55) 100%);
  pointer-events:none;
}
.hero-page::after{
  content:"";position:absolute;width:520px;height:520px;right:-140px;top:-160px;
  background:radial-gradient(circle,rgba(201,245,63,.20),transparent 62%);
  pointer-events:none;
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.12fr .88fr;gap:52px;align-items:center;
}
.eyebrow{
  display:inline-block;font-family:"Space Grotesk",sans-serif;
  font-size:11.5px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--steel);font-weight:500;
}
.hero-title{
  font-size:clamp(2.2rem,5vw,3.5rem);
  line-height:1.1;font-weight:900;margin:16px 0 0;letter-spacing:0;
}
.kw{
  background:linear-gradient(transparent 70%,rgba(201,245,63,.92) 70%,rgba(201,245,63,.92) 92%,transparent 92%);
  padding:0 2px;
}
.hero-lead{
  margin:20px 0 0;max-width:620px;font-size:17px;line-height:1.8;color:var(--ink-2);
}
.hero-facts{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
  margin-top:26px;font-size:14px;color:var(--steel);
}
.hero-facts li{display:inline-flex;align-items:center;gap:8px;list-style:none}
.hero-facts li::before{content:"";width:6px;height:6px;border-radius:999px;background:var(--lime-deep);flex:none}
.hero-facts{list-style:none;padding:0}
.hero-visual{position:relative}
.hero-shot{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:10px;transform:rotate(-2deg);
  box-shadow:0 24px 50px -28px rgba(20,22,26,.35);
}
.hero-shot img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:14px}
.hero-badge{
  position:absolute;background:var(--ink);color:#fff;
  border:1px solid var(--ink-2);border-radius:999px;
  padding:9px 16px;font-size:13px;font-weight:500;
  display:inline-flex;align-items:center;gap:8px;
  animation:floaty 6s var(--ease) infinite;
}
.hero-badge .dot-lime{width:8px;height:8px;border-radius:999px;background:var(--lime);flex:none}
.badge-a{right:-8px;bottom:26px}
.badge-b{left:-12px;top:22px;animation-delay:1.6s}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-7px)}}

/* ---------- sections ---------- */
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{max-width:760px;margin-bottom:44px}
.h2{font-size:clamp(1.7rem,3.2vw,2.4rem);line-height:1.18;font-weight:700;margin:12px 0 0}
.section-sub{margin:14px 0 0;color:var(--steel);font-size:15.5px;line-height:1.8}
.band{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* spec board */
.spec-board{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.spec-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-rest);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.spec-card:hover{border-color:var(--lime);box-shadow:var(--shadow-hover)}
.spec-card-head{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:20px 22px;background:var(--paper);border-bottom:1px solid var(--line);
}
.spec-card-head h3{font-size:1.125rem;font-weight:700;margin:0}
.spec-tag{
  font-family:"Space Grotesk",sans-serif;font-size:11px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--ink);
  background:var(--lime);border-radius:8px;padding:5px 10px;font-weight:700;
}
.spec-row{
  display:flex;align-items:center;gap:16px;
  min-height:56px;padding:10px 22px;
  border-bottom:1px solid var(--line);
}
.spec-row:last-child{border-bottom:0}
.spec-row:nth-child(even){background:var(--paper)}
.spec-label{
  flex:none;width:104px;font-size:13px;color:var(--steel);line-height:1.5;
}
.spec-value{flex:1;font-size:15px;color:var(--ink);line-height:1.55}
.dot{
  width:10px;height:10px;border-radius:999px;background:var(--lime);
  box-shadow:0 0 0 4px rgba(201,245,63,.22);flex:none;
}
.tip-bar{
  display:flex;align-items:flex-start;gap:14px;
  margin-top:26px;padding:16px 22px;
  background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--lime);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  font-size:14.5px;color:var(--ink-2);line-height:1.75;
}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.step{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:24px 22px;position:relative;
  transition:border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.step:hover{border-color:var(--lime);transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.step-num{
  font-family:"Space Grotesk",sans-serif;font-size:26px;font-weight:700;
  color:var(--lime-deep);line-height:1;
}
.step h3{font-size:1.0625rem;font-weight:700;margin:14px 0 8px;line-height:1.4}
.step p{margin:0;font-size:14px;color:var(--steel);line-height:1.72}

/* notes */
.note-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-bottom:24px}
.note-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:26px 24px;
}
.note-card h3{font-size:1.0625rem;font-weight:700;margin:0 0 10px}
.note-card p{margin:0;font-size:15px;color:var(--steel);line-height:1.82}
.warn-bar{
  display:flex;align-items:flex-start;gap:14px;
  border-left:3px solid var(--ember);background:rgba(255,106,43,.07);
  padding:18px 22px;border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  font-size:14.5px;color:var(--ink-2);line-height:1.78;
}
.warn-bar strong{color:var(--ink)}

/* faq */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 0;background:none;border:0;text-align:left;cursor:pointer;
  font-size:17px;font-weight:700;color:var(--ink);line-height:1.55;
}
.faq-q:hover{color:var(--ink-2)}
.faq-icon{
  width:28px;height:28px;border-radius:999px;border:1px solid var(--lime-deep);
  color:var(--lime-deep);display:inline-flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;flex:none;line-height:1;
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease);
}
.faq-item.open .faq-icon{background:var(--lime);color:var(--ink);border-color:var(--lime)}
.sign-minus{display:none}
.faq-item.open .sign-plus{display:none}
.faq-item.open .sign-minus{display:inline}
.faq-a{
  max-height:0;overflow:hidden;opacity:0;
  transition:max-height .26s var(--ease),opacity .24s var(--ease);
}
.faq-item.open .faq-a{max-height:420px;opacity:1}
.faq-a p{
  margin:0;padding:0 56px 22px 0;
  font-size:15px;color:var(--steel);line-height:1.85;
}

/* cta */
.cta-panel{
  position:relative;overflow:hidden;
  background:var(--ink);color:#fff;border-radius:24px;
  padding:46px 44px;
  display:grid;grid-template-columns:1fr auto;gap:36px;align-items:center;
  border:1px solid var(--ink-2);
}
.cta-panel::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(rgba(255,255,255,.09) 1px,transparent 1px);
  background-size:18px 18px;
}
.cta-copy{position:relative;z-index:1}
.cta-copy h2{
  font-size:clamp(1.5rem,2.6vw,2.05rem);line-height:1.2;font-weight:700;
  margin:10px 0 0;color:#fff;
}
.cta-copy p{margin:14px 0 0;font-size:15px;color:rgba(255,255,255,.68);line-height:1.8;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.cta-meta{margin-top:18px;font-size:13px;color:rgba(255,255,255,.5)}
.qr-wrap{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;gap:10px}
.qr-box{
  width:160px;height:160px;background:var(--surface);border-radius:14px;padding:8px;
}
.qr-inner{
  width:100%;height:100%;border-radius:8px;position:relative;
  background:
    repeating-linear-gradient(90deg,rgba(20,22,26,.9) 0 5px,transparent 5px 10px),
    repeating-linear-gradient(0deg,rgba(20,22,26,.9) 0 5px,transparent 5px 10px);
  background-blend-mode:multiply;
}
.qr-inner::before,.qr-inner::after{
  content:"";position:absolute;width:26px;height:26px;border:5px solid var(--ink);
  background:var(--surface);border-radius:4px;
}
.qr-inner::before{left:0;top:0}
.qr-inner::after{right:0;bottom:0}
.qr-label{font-size:12.5px;color:rgba(255,255,255,.6);letter-spacing:.04em}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:999px;
  font-size:15px;font-weight:600;cursor:pointer;
  border:1px solid transparent;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),filter .22s var(--ease);
}
.btn-lg{height:52px;padding:0 28px;font-size:16px}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--lime);color:var(--ink);transform:translateY(-2px)}
.btn-primary:hover .btn-arrow{transform:translateX(4px)}
.btn-arrow{transition:transform .22s var(--ease)}
.btn-outline{background:transparent;border-color:rgba(20,22,26,.22);color:var(--ink)}
.btn-outline:hover{border-color:var(--lime-deep);background:rgba(201,245,63,.10);transform:translateY(-2px)}
.btn-lime{background:var(--lime);color:var(--ink)}
.btn-lime:hover{filter:brightness(1.06);transform:translateY(-2px)}
.btn-ghost-dark{background:transparent;border-color:rgba(255,255,255,.22);color:#fff}
.btn-ghost-dark:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-2px)}
.btn:active{transform:translateY(0)}

/* footer */
.site-footer{
  background:var(--ink);color:rgba(255,255,255,.68);
  border-radius:24px 24px 0 0;
  padding:64px 0 26px;margin-top:0;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.08);
}
.footer-brand .logo-text{color:#fff}
.footer-brand p{margin:16px 0 0;font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.6);max-width:300px}
.footer-col h4{
  font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:rgba(255,255,255,.42);font-weight:600;margin:0 0 16px;
}
.footer-col a{
  display:block;font-size:14px;color:rgba(255,255,255,.72);
  padding:6px 0;transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-col a:hover{color:var(--lime);transform:translateX(2px)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding-top:22px;font-size:13px;color:rgba(255,255,255,.42);
}
.to-top{
  width:40px;height:40px;border-radius:999px;border:1px solid rgba(255,255,255,.22);
  display:inline-flex;align-items:center;justify-content:center;
  color:#fff;font-size:15px;flex:none;
  transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.to-top:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-2px)}

/* reveal */
.reveal{opacity:0;transform:translateY(12px)}
.reveal.in{opacity:1;transform:translateY(0);transition:opacity .4s var(--ease),transform .4s var(--ease)}

/* responsive */
@media (max-width:1179px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .nav-card{justify-content:space-between}
}
@media (max-width:1023px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-visual{max-width:560px}
  .steps{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:64px 0}
}
@media (max-width:899px){
  .spec-board{grid-template-columns:1fr}
  .note-grid{grid-template-columns:1fr}
  .cta-panel{grid-template-columns:1fr;padding:34px 26px;gap:26px}
  .qr-wrap{align-items:flex-start}
}
@media (max-width:767px){
  .nav-cta{display:none}
}
@media (max-width:640px){
  .container{padding:0 20px}
  .hero-page{padding:36px 0 56px}
  .hero-title{font-size:clamp(1.95rem,8.4vw,2.6rem)}
  .hero-lead{font-size:16px}
  .step{padding:20px 18px}
  .spec-row{padding:10px 16px;gap:12px}
  .spec-card-head{padding:16px}
  .spec-label{width:86px;font-size:12.5px}
  .spec-value{font-size:14px}
  .faq-q{font-size:16px;padding:18px 0}
  .faq-a p{padding-right:0}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:14px}
  .cta-panel{padding:28px 20px;border-radius:20px}
  .cta-actions .btn{width:100%}
  .hero-badge{font-size:12px;padding:7px 12px}
  .badge-a{right:0;bottom:14px}
  .badge-b{left:0;top:12px}
}
@media (max-width:520px){
  .steps{grid-template-columns:1fr}
  .btn{height:46px}
  .btn-lg{height:50px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation:none !important;
    transition:none !important;
    transform:none !important;
  }
  .reveal{opacity:1;transform:none}
}

/* roulang page: category4 */
:root{
    --ink:#14161A;
    --ink-2:#2A2E35;
    --paper:#F6F4EF;
    --surface:#FFFDF8;
    --line:#E4DFD3;
    --lime:#C9F53F;
    --lime-deep:#A8D42A;
    --steel:#6C7480;
    --ember:#FF6A2B;
    --r-lg:20px;
    --r-md:16px;
    --r-sm:12px;
    --shadow:0 1px 2px rgba(20,22,26,.05);
    --shadow-hover:0 18px 40px -12px rgba(20,22,26,.18);
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
  }
  body .container{
    width:100%;
    max-width:1240px;
    margin:0 auto;
    padding-left:24px;
    padding-right:24px;
  }
  img{display:block;max-width:100%;height:auto;}
  a{color:inherit;text-decoration:none;}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
  ul,ol{list-style:none;}
  button{font-family:inherit;}
  ::selection{background:var(--lime);color:var(--ink);}
  :focus-visible{outline:2px solid var(--lime);outline-offset:3px;}
  .mono{font-family:'Space Grotesk','Noto Sans SC',sans-serif;}

  /* ===== header ===== */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    padding:16px 0 0;
    background:linear-gradient(to bottom,rgba(246,244,239,.94) 40%,rgba(246,244,239,.55) 100%);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
  }
  .nav-shell{
    display:flex;
    align-items:center;
    gap:20px;
    flex-wrap:wrap;
    padding:12px 16px;
    background:var(--ink);
    border:1px solid var(--ink-2);
    border-radius:20px;
    box-shadow:0 10px 30px -18px rgba(20,22,26,.6);
  }
  .logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
  .logo-mark{
    position:relative;
    width:24px;height:24px;
    border-radius:8px;
    background:var(--lime);
    box-shadow:inset 0 -6px 0 rgba(20,22,26,.16);
    flex:0 0 auto;
  }
  .logo-mark::after{
    content:"";
    position:absolute;
    left:7px;top:7px;
    width:6px;height:6px;
    border-radius:2px;
    background:var(--ink);
  }
  .logo-text{font-size:18px;font-weight:800;color:#fff;letter-spacing:0;line-height:1;}
  .nav-links{display:flex;align-items:center;gap:4px;flex:1 1 auto;flex-wrap:wrap;}
  .nav-links a{
    display:inline-flex;
    align-items:center;
    height:40px;
    padding:0 12px;
    border-radius:var(--r-sm);
    font-size:14px;
    color:rgba(255,255,255,.72);
    transition:background .22s ease,color .22s ease,transform .22s ease;
    white-space:nowrap;
  }
  .nav-links a:hover{background:rgba(201,245,63,.12);color:#fff;transform:translateY(-1px);}
  .nav-links a.active{background:var(--lime);color:var(--ink);font-weight:700;}
  .nav-cta{
    display:inline-flex;
    align-items:center;
    gap:8px;
    height:40px;
    padding:0 18px;
    border-radius:999px;
    background:var(--lime);
    color:var(--ink);
    font-size:14px;
    font-weight:700;
    transition:transform .22s ease,background .22s ease;
    flex:0 0 auto;
  }
  .nav-cta:hover{background:#d6ff52;transform:translateY(-1px);}
  .nav-cta .arr{transition:transform .22s ease;}
  .nav-cta:hover .arr{transform:translateX(4px);}
  .nav-toggle{
    display:none;
    align-items:center;
    justify-content:center;
    width:44px;height:44px;
    border-radius:12px;
    border:1px solid rgba(255,255,255,.22);
    background:transparent;
    color:#fff;
    cursor:pointer;
    margin-left:auto;
  }
  .nav-toggle:hover{border-color:var(--lime);color:var(--lime);}
  .nav-mobile-cta{display:none;}

  /* ===== hero ===== */
  .hero{
    position:relative;
    margin-top:20px;
    border-radius:24px;
    overflow:hidden;
    background-image:url('/assets/images/backpic/back-1.png');
    background-size:cover;
    background-position:center;
    background-color:var(--ink);
    isolation:isolate;
  }
  .hero::before{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(102deg,rgba(20,22,26,.95) 0%,rgba(20,22,26,.86) 52%,rgba(20,22,26,.55) 100%);
    z-index:0;
  }
  .hero-inner{
    position:relative;
    z-index:1;
    min-height:380px;
    padding:72px 56px 56px;
    display:flex;
    flex-direction:column;
    justify-content:flex-end;
    gap:20px;
    max-width:820px;
  }
  .eyebrow{
    display:inline-flex;
    align-items:center;
    gap:10px;
    font-family:'Space Grotesk','Noto Sans SC',sans-serif;
    font-size:11px;
    letter-spacing:.18em;
    text-transform:uppercase;
    color:var(--lime);
    font-weight:700;
  }
  .eyebrow::before{content:"";width:26px;height:2px;background:var(--lime);display:block;}
  .hero h1{
    font-size:clamp(2rem,4.6vw,3.3rem);
    line-height:1.1;
    font-weight:900;
    color:#fff;
    letter-spacing:0;
  }
  .hl{
    background-image:linear-gradient(transparent 66%,rgba(201,245,63,.42) 66%);
    background-repeat:no-repeat;
  }
  .hero-sub{
    font-size:17px;
    line-height:1.8;
    color:rgba(255,255,255,.78);
    max-width:640px;
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:6px;}
  .hero-meta{
    display:flex;flex-wrap:wrap;align-items:center;gap:10px;
    font-size:13.5px;color:rgba(255,255,255,.6);
    margin-top:4px;
  }
  .hero-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(201,245,63,.8);}

  /* ===== buttons ===== */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:52px;
    padding:0 26px;
    border-radius:999px;
    border:1px solid transparent;
    font-size:15px;
    font-weight:700;
    cursor:pointer;
    transition:background .22s cubic-bezier(.2,.8,.2,1),color .22s cubic-bezier(.2,.8,.2,1),border-color .22s cubic-bezier(.2,.8,.2,1),transform .22s cubic-bezier(.2,.8,.2,1),box-shadow .22s cubic-bezier(.2,.8,.2,1);
    white-space:nowrap;
  }
  .btn .arr{transition:transform .22s ease;}
  .btn:hover .arr{transform:translateX(4px);}
  .btn:active{transform:translateY(0);}
  .btn-lime{background:var(--lime);color:var(--ink);}
  .btn-lime:hover{background:#d6ff52;transform:translateY(-2px);}
  .btn-primary{background:var(--ink);color:#fff;}
  .btn-primary:hover{background:var(--lime);color:var(--ink);transform:translateY(-2px);}
  .btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.26);color:#fff;}
  .btn-ghost-light:hover{border-color:var(--lime);color:var(--lime);background:rgba(255,255,255,.06);transform:translateY(-2px);}
  .btn-secondary{background:transparent;border-color:rgba(20,22,26,.2);color:var(--ink);}
  .btn-secondary:hover{border-color:var(--lime-deep);background:rgba(201,245,63,.1);transform:translateY(-2px);}
  .btn-sm{height:44px;padding:0 20px;font-size:14px;}

  /* ===== sections ===== */
  .section{padding:76px 0;scroll-margin-top:110px;}
  .section-tight{padding:56px 0;scroll-margin-top:110px;}
  .sec-head{
    display:flex;
    align-items:flex-end;
    justify-content:space-between;
    gap:28px;
    margin-bottom:40px;
    flex-wrap:wrap;
  }
  .sec-head h2{
    font-size:clamp(1.6rem,3vw,2.3rem);
    line-height:1.15;
    font-weight:800;
  }
  .sec-head p{
    font-size:15px;
    color:var(--steel);
    max-width:540px;
    line-height:1.75;
  }
  .sec-label{
    font-family:'Space Grotesk','Noto Sans SC',sans-serif;
    font-size:11px;
    letter-spacing:.18em;
    text-transform:uppercase;
    color:var(--steel);
    font-weight:700;
    display:block;
    margin-bottom:12px;
  }

  /* ===== feature card ===== */
  .feature-card{
    display:grid;
    grid-template-columns:1.05fr 1fr;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-lg);
    overflow:hidden;
    box-shadow:var(--shadow);
    transition:border-color .22s ease,box-shadow .22s ease;
  }
  .feature-card:hover{border-color:var(--lime);box-shadow:var(--shadow-hover);}
  .feature-media{position:relative;min-height:300px;background:var(--ink);}
  .feature-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10;}
  .feature-body{padding:40px;display:flex;flex-direction:column;gap:16px;justify-content:center;}
  .badge{
    display:inline-flex;
    align-items:center;
    height:26px;
    padding:0 12px;
    border-radius:8px;
    background:var(--lime);
    color:var(--ink);
    font-size:12px;
    font-weight:700;
    align-self:flex-start;
  }
  .feature-body h3{font-size:clamp(1.25rem,2.2vw,1.6rem);line-height:1.35;font-weight:800;}
  .feature-body p{font-size:15px;color:var(--steel);line-height:1.85;}
  .meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--steel);}
  .meta-row .dot{width:3px;height:3px;border-radius:50%;background:var(--line);}
  .text-link{
    display:inline-flex;align-items:center;gap:8px;
    font-size:14px;font-weight:700;color:var(--ink);
    border-bottom:2px solid var(--lime);
    padding-bottom:2px;
    align-self:flex-start;
    transition:color .22s ease;
  }
  .text-link:hover{color:var(--lime-deep);}
  .text-link .arr{transition:transform .22s ease;}
  .text-link:hover .arr{transform:translateX(4px);}

  /* ===== timeline ===== */
  .timeline{border-top:1px solid var(--line);}
  .tl-month{
    display:grid;
    grid-template-columns:170px 1fr;
    gap:40px;
    padding:30px 0;
    border-bottom:1px solid var(--line);
  }
  .tl-month-label{
    font-family:'Space Grotesk','Noto Sans SC',sans-serif;
    font-size:14px;
    letter-spacing:.08em;
    color:var(--steel);
    font-weight:700;
    padding-top:16px;
    position:relative;
  }
  .tl-month-label::before{
    content:"";
    position:absolute;
    left:0;top:0;
    width:26px;height:3px;
    background:var(--lime);
    border-radius:2px;
  }
  .tl-item a{
    display:grid;
    grid-template-columns:58px 1fr auto;
    gap:16px;
    align-items:center;
    padding:16px 8px 16px 0;
    border-bottom:1px solid var(--line);
    transition:background .22s ease,padding-left .22s ease;
    border-radius:8px;
  }
  .tl-item:last-child a{border-bottom:none;}
  .tl-item a:hover{padding-left:8px;}
  .tl-date{
    font-family:'Space Grotesk','Noto Sans SC',sans-serif;
    font-size:13px;
    color:var(--steel);
    letter-spacing:.04em;
  }
  .tl-title{font-size:15.5px;font-weight:700;line-height:1.6;color:var(--ink);transition:box-shadow .22s ease;}
  .tl-item a:hover .tl-title{box-shadow:inset 0 -0.55em 0 rgba(201,245,63,.3);}
  .badge-outline{
    display:inline-flex;align-items:center;height:24px;padding:0 10px;
    border-radius:8px;border:1px solid var(--line);
    font-size:12px;color:var(--steel);white-space:nowrap;
  }
  .tl-note{
    margin-top:24px;
    font-size:14px;
    color:var(--steel);
    padding-left:16px;
    border-left:3px solid var(--lime);
  }

  /* ===== stats strip ===== */
  .stats-strip{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-lg);
    overflow:hidden;
    box-shadow:var(--shadow);
  }
  .stat-cell{padding:34px 32px;border-left:1px solid var(--line);}
  .stat-cell:first-child{border-left:none;}
  .stat-num{
    font-family:'Space Grotesk','Noto Sans SC',sans-serif;
    font-size:28px;
    font-weight:700;
    color:var(--lime-deep);
    letter-spacing:.02em;
    display:block;
    margin-bottom:8px;
  }
  .stat-cell h3{font-size:1.05rem;font-weight:700;margin-bottom:6px;}
  .stat-cell p{font-size:14px;color:var(--steel);line-height:1.75;}

  /* ===== faq ===== */
  .faq-list{border-top:1px solid var(--line);}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-q{
    width:100%;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
    padding:22px 0;
    background:transparent;
    border:none;
    text-align:left;
    font-size:17px;
    font-weight:700;
    color:var(--ink);
    cursor:pointer;
    transition:color .22s ease;
  }
  .faq-q:hover{color:var(--lime-deep);}
  .faq-icon{
    position:relative;
    flex:0 0 auto;
    width:28px;height:28px;
    border-radius:50%;
    border:1.5px solid var(--lime-deep);
    transition:background .22s ease,border-color .22s ease;
  }
  .faq-icon::before,.faq-icon::after{
    content:"";
    position:absolute;
    left:50%;top:50%;
    width:11px;height:1.6px;
    background:var(--ink);
    transform:translate(-50%,-50%);
    transition:transform .24s ease,opacity .24s ease;
  }
  .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);}
  .faq-item.open .faq-icon{background:var(--lime);border-color:var(--lime);}
  .faq-item.open .faq-icon::after{transform:translate(-50%,-50%) rotate(0deg);opacity:0;}
  .faq-a{
    max-height:0;
    overflow:hidden;
    transition:max-height .24s ease,opacity .24s ease;
    opacity:0;
  }
  .faq-item.open .faq-a{opacity:1;}
  .faq-a-inner{
    padding:0 0 22px;
    font-size:15px;
    line-height:1.85;
    color:var(--steel);
    max-width:760px;
  }

  /* ===== subscribe form ===== */
  .form-card{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-lg);
    padding:40px;
    display:grid;
    grid-template-columns:1fr 1.1fr;
    gap:36px;
    align-items:center;
    box-shadow:var(--shadow);
  }
  .form-copy h2{font-size:clamp(1.45rem,2.6vw,2rem);line-height:1.2;font-weight:800;margin-bottom:12px;}
  .form-copy p{font-size:15px;color:var(--steel);line-height:1.8;}
  .sub-form{display:flex;gap:12px;flex-wrap:wrap;}
  .sub-form input{
    flex:1 1 240px;
    height:52px;
    padding:0 18px;
    border-radius:var(--r-sm);
    border:1px solid var(--line);
    background:var(--paper);
    font-size:15px;
    color:var(--ink);
    font-family:inherit;
    transition:border-color .22s ease,box-shadow .22s ease;
    min-width:0;
  }
  .sub-form input::placeholder{color:#9AA0A8;}
  .sub-form input:focus{
    outline:none;
    border-color:var(--lime-deep);
    box-shadow:0 0 0 3px rgba(201,245,63,.2);
  }
  .form-hint{font-size:12.5px;color:var(--steel);margin-top:12px;line-height:1.7;}
  .form-msg{font-size:13.5px;margin-top:10px;color:var(--lime-deep);font-weight:700;min-height:20px;}

  /* ===== dark cta ===== */
  .cta-panel{
    position:relative;
    background-color:var(--ink);
    background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);
    background-size:18px 18px;
    border:1px solid var(--ink-2);
    border-radius:24px;
    padding:48px;
    display:grid;
    grid-template-columns:1.4fr .75fr;
    gap:36px;
    align-items:center;
    overflow:hidden;
    color:#fff;
  }
  .cta-panel h2{font-size:clamp(1.5rem,2.8vw,2.1rem);line-height:1.2;font-weight:800;margin-bottom:12px;}
  .cta-panel p{font-size:15px;color:rgba(255,255,255,.7);line-height:1.8;max-width:520px;}
  .cta-btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}
  .cta-meta{font-size:13px;color:rgba(255,255,255,.55);margin-top:16px;font-family:'Space Grotesk','Noto Sans SC',sans-serif;}
  .qr-box{
    justify-self:end;
    width:168px;
    background:var(--surface);
    border-radius:14px;
    padding:10px;
    text-align:center;
  }
  .qr-pattern{
    width:100%;
    aspect-ratio:1/1;
    border-radius:8px;
    background:
      repeating-linear-gradient(90deg,var(--ink) 0 6px,transparent 6px 12px),
      repeating-linear-gradient(0deg,var(--ink) 0 6px,transparent 6px 12px);
    background-blend-mode:multiply;
    opacity:.86;
  }
  .qr-box span{
    display:block;
    font-size:12px;
    color:var(--steel);
    margin-top:8px;
    font-weight:700;
  }

  /* ===== footer ===== */
  .site-footer{
    margin-top:20px;
    background:var(--ink);
    color:#fff;
    padding:64px 0 24px;
    border-top:1px solid var(--ink-2);
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.4fr 1fr 1fr 1fr;
    gap:40px;
    padding-bottom:44px;
  }
  .footer-brand .logo{margin-bottom:16px;}
  .footer-brand p{font-size:14px;color:rgba(255,255,255,.62);line-height:1.8;max-width:280px;}
  .footer-col h4{
    font-size:13px;
    letter-spacing:.14em;
    text-transform:uppercase;
    color:rgba(255,255,255,.5);
    font-weight:700;
    margin-bottom:16px;
    font-family:'Space Grotesk','Noto Sans SC',sans-serif;
  }
  .footer-col a{
    display:block;
    font-size:14px;
    color:rgba(255,255,255,.76);
    padding:6px 0;
    transition:color .22s ease,transform .22s ease;
  }
  .footer-col a:hover{color:var(--lime);transform:translateX(2px);}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.08);
    padding-top:22px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    flex-wrap:wrap;
    font-size:13px;
    color:rgba(255,255,255,.52);
  }
  .to-top{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:40px;height:40px;
    border-radius:50%;
    border:1px solid rgba(255,255,255,.22);
    color:#fff;
    transition:border-color .22s ease,color .22s ease,transform .22s ease;
  }
  .to-top:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-2px);}

  /* ===== reveal ===== */
  .reveal{opacity:0;transform:translateY(12px);transition:opacity .4s ease,transform .4s ease;}
  .reveal.in{opacity:1;transform:none;}

  /* ===== responsive ===== */
  @media (max-width:1023px){
    .nav-toggle{display:inline-flex;}
    .nav-cta{display:none;}
    .nav-links{
      display:none;
      order:3;
      flex:1 1 100%;
      flex-direction:column;
      align-items:stretch;
      gap:6px;
      margin-top:12px;
      padding-top:12px;
      border-top:1px solid rgba(255,255,255,.1);
    }
    .nav-links.open{display:flex;}
    .nav-links a{height:48px;font-size:15px;padding:0 14px;}
    .nav-mobile-cta{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      height:48px;
      margin-top:6px;
      border-radius:999px;
      background:var(--lime);
      color:var(--ink);
      font-weight:700;
      font-size:15px;
    }
    .feature-card{grid-template-columns:1fr;}
    .feature-media{min-height:220px;}
    .feature-body{padding:28px;}
    .tl-month{grid-template-columns:1fr;gap:8px;padding:24px 0;}
    .tl-month-label{padding-top:14px;margin-bottom:4px;}
    .form-card{grid-template-columns:1fr;padding:28px;gap:24px;}
    .cta-panel{grid-template-columns:1fr;padding:32px;}
    .qr-box{justify-self:start;width:150px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
    .stats-strip{grid-template-columns:1fr;}
    .stat-cell{border-left:none;border-top:1px solid var(--line);}
    .stat-cell:first-child{border-top:none;}
  }
  @media (max-width:640px){
    body .container{padding-left:20px;padding-right:20px;}
    .hero-inner{padding:40px 24px 36px;min-height:0;gap:16px;}
    .hero h1{font-size:clamp(1.75rem,8vw,2.3rem);}
    .hero-sub{font-size:15px;}
    .hero-actions{gap:10px;}
    .hero-actions .btn{width:100%;height:48px;}
    .section{padding:52px 0;}
    .section-tight{padding:40px 0;}
    .sec-head{margin-bottom:28px;gap:16px;}
    .feature-body{padding:22px;}
    .tl-item a{grid-template-columns:1fr;gap:6px;padding:14px 0;}
    .tl-item a:hover{padding-left:0;}
    .badge-outline{justify-self:start;}
    .sub-form input{flex:1 1 100%;}
    .sub-form .btn{width:100%;}
    .faq-q{font-size:15.5px;padding:18px 0;}
    .cta-btns .btn{width:100%;}
    .cta-panel{padding:26px;}
    .footer-grid{grid-template-columns:1fr;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
  }
  @media (prefers-reduced-motion:reduce){
    html{scroll-behavior:auto;}
    *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
    .reveal{opacity:1;transform:none;}
  }

/* roulang page: category5 */
:root{
    --ink:#14161A;
    --ink-2:#2A2E35;
    --paper:#F6F4EF;
    --surface:#FFFDF8;
    --line:#E4DFD3;
    --lime:#C9F53F;
    --lime-deep:#A8D42A;
    --steel:#6C7480;
    --ember:#FF6A2B;
    --r-lg:20px;
    --r-md:16px;
    --r-sm:12px;
    --shadow-rest:0 1px 2px rgba(20,22,26,.05);
    --shadow-hover:0 18px 40px -12px rgba(20,22,26,.18);
    --ease:cubic-bezier(.2,.8,.2,1);
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
    background:var(--paper);
    color:var(--ink);
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
  ul,ol{list-style:none;}
  a{color:inherit;text-decoration:none;}
  img{max-width:100%;display:block;}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  :focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:6px;}
  .container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}
  .mono{font-family:"Space Grotesk","Noto Sans SC",sans-serif;font-variant-numeric:tabular-nums;}

  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:90;
    padding:16px 24px 10px;
    background:linear-gradient(180deg,var(--paper) 62%,rgba(246,244,239,0));
  }
  .nav-card{
    max-width:1240px;margin:0 auto;
    display:flex;align-items:center;gap:14px;
    min-height:72px;padding:10px 14px;
    background:rgba(20,22,26,.94);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
    border:1px solid rgba(255,255,255,.09);
    border-radius:var(--r-lg);
  }
  .logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
  .logo-mark{
    width:26px;height:26px;border-radius:8px;
    background:var(--lime);
    position:relative;display:inline-block;
    box-shadow:inset 0 0 0 4px rgba(20,22,26,.14);
  }
  .logo-mark::after{
    content:"";position:absolute;left:7px;top:7px;width:12px;height:12px;
    border-radius:3px;background:var(--ink);
  }
  .logo-text{font-size:18px;font-weight:800;letter-spacing:0;color:#fff;white-space:nowrap;}
  .nav-links{display:flex;align-items:center;gap:2px;flex:1 1 auto;justify-content:center;}
  .nav-links a{
    display:inline-flex;align-items:center;height:40px;padding:0 10px;
    border-radius:var(--r-sm);
    font-size:13.5px;color:rgba(255,255,255,.72);
    white-space:nowrap;
    transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
  }
  .nav-links a:hover{background:rgba(201,245,63,.12);color:#fff;transform:translateY(-1px);}
  .nav-links a.active{background:var(--lime);color:var(--ink);font-weight:700;}
  .nav-cta{
    display:inline-flex;align-items:center;gap:8px;flex:0 0 auto;
    height:44px;padding:0 20px;border-radius:999px;
    background:var(--lime);color:var(--ink);
    font-size:14px;font-weight:700;
    transition:background .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
  }
  .nav-cta:hover{background:#d6ff5b;transform:translateY(-2px);box-shadow:0 12px 26px -12px rgba(201,245,63,.9);}
  .nav-toggle{
    display:none;flex:0 0 auto;width:44px;height:44px;border-radius:var(--r-sm);
    border:1px solid rgba(255,255,255,.18);align-items:center;justify-content:center;gap:4px;flex-direction:column;
  }
  .nav-toggle span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;}
  .drawer{display:none;max-width:1240px;margin:10px auto 0;background:var(--ink);border:1px solid rgba(255,255,255,.09);border-radius:var(--r-lg);padding:14px;}
  .drawer.open{display:block;}
  .drawer a{
    display:flex;align-items:center;height:56px;padding:0 16px;border-radius:var(--r-sm);
    color:rgba(255,255,255,.78);font-size:15px;
  }
  .drawer a.active{background:var(--lime);color:var(--ink);font-weight:700;}
  .drawer a:hover{background:rgba(201,245,63,.12);color:#fff;}
  .drawer .drawer-cta{
    margin-top:10px;justify-content:center;background:var(--lime);color:var(--ink);font-weight:700;border-radius:999px;
  }
  .drawer .drawer-note{padding:10px 16px 4px;font-size:12px;letter-spacing:.16em;color:rgba(255,255,255,.42);text-transform:uppercase;}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:10px;
    height:52px;padding:0 28px;border-radius:999px;
    font-size:15px;font-weight:700;line-height:1;
    transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
  }
  .btn .arrow{transition:transform .22s var(--ease);}
  .btn:hover .arrow{transform:translateX(4px);}
  .btn-primary{background:var(--ink);color:#fff;}
  .btn-primary:hover{background:var(--lime);color:var(--ink);transform:translateY(-2px);box-shadow:0 16px 32px -16px rgba(20,22,26,.6);}
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{background:transparent;color:var(--ink);border:1px solid rgba(20,22,26,.2);}
  .btn-ghost:hover{border-color:var(--lime-deep);background:rgba(201,245,63,.08);transform:translateY(-2px);}
  .btn-lime{background:var(--lime);color:var(--ink);}
  .btn-lime:hover{background:#d6ff5b;transform:translateY(-2px);}
  .btn-outline-light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.24);}
  .btn-outline-light:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-2px);}

  /* ---------- 通用板块 ---------- */
  .section{padding:84px 0;}
  .section-tight{padding:56px 0;}
  .eyebrow{
    display:inline-block;font-family:"Space Grotesk",sans-serif;
    font-size:11.5px;letter-spacing:.18em;text-transform:uppercase;
    color:var(--steel);margin-bottom:14px;
  }
  .eyebrow.lime{color:var(--lime-deep);}
  .h2{font-size:clamp(1.7rem,3.2vw,2.5rem);line-height:1.15;font-weight:700;letter-spacing:0;}
  .lead{color:var(--steel);font-size:16px;line-height:1.8;max-width:720px;margin-top:16px;}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;}
  .key-underline{
    position:relative;white-space:nowrap;
  }
  .key-underline::after{
    content:"";position:absolute;left:0;right:0;bottom:-6px;height:4px;border-radius:2px;
    background:var(--lime);
  }

  /* ---------- Hero ---------- */
  .hero{position:relative;overflow:hidden;padding:52px 0 76px;}
  .hero::before{
    content:"";position:absolute;right:-160px;top:-180px;width:560px;height:560px;border-radius:50%;
    background:radial-gradient(circle,rgba(201,245,63,.16),rgba(201,245,63,0) 68%);
    pointer-events:none;
  }
  .hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
  .hero h1{
    font-size:clamp(2.1rem,4.6vw,3.7rem);
    line-height:1.1;font-weight:900;letter-spacing:0;margin:8px 0 0;
  }
  .hero-sub{margin-top:20px;font-size:17px;line-height:1.8;color:var(--ink-2);max-width:640px;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
  .hero-meta{
    display:flex;flex-wrap:wrap;align-items:center;gap:10px;
    margin-top:22px;font-size:14px;color:var(--steel);
  }
  .hero-meta i{font-style:normal;color:var(--line);}
  .hero-rating{display:flex;align-items:center;gap:10px;margin-top:16px;font-size:13px;color:var(--steel);}
  .stars{display:inline-flex;gap:2px;color:var(--lime-deep);font-size:14px;letter-spacing:1px;}
  .hero-visual{position:relative;}
  .hero-visual::before{
    content:"";position:absolute;inset:-14px -10px 24px 18px;
    background:url("/assets/images/backpic/back-2.png") center/cover no-repeat;
    border-radius:26px;opacity:.35;filter:saturate(.9);
    pointer-events:none;
  }
  .hero-shot{
    position:relative;border-radius:var(--r-lg);overflow:hidden;
    background:var(--surface);border:1px solid var(--line);
    box-shadow:var(--shadow-hover);
    transform:rotate(-2deg);
  }
  .hero-shot img{width:100%;height:auto;aspect-ratio:16/10;object-fit:cover;}
  .float-badge{
    position:absolute;display:inline-flex;align-items:center;gap:6px;
    padding:8px 14px;border-radius:999px;background:var(--surface);
    border:1px solid var(--line);font-size:12.5px;font-weight:700;color:var(--ink);
    box-shadow:var(--shadow-rest);
    animation:floaty 6s ease-in-out infinite;
  }
  .float-badge.b1{left:-14px;top:14%;}
  .float-badge.b2{right:-10px;bottom:12%;animation-delay:1.4s;}
  .float-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--lime-deep);}
  @keyframes floaty{
    0%,100%{transform:translateY(0);}
    50%{transform:translateY(-7px);}
  }

  /* ---------- 技巧双栏 ---------- */
  .tips-layout{display:grid;grid-template-columns:minmax(0,1fr) 336px;gap:32px;align-items:start;}
  .tip-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
  .tip-card{
    position:relative;display:flex;flex-direction:column;gap:10px;
    background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
    padding:26px 24px 22px;box-shadow:var(--shadow-rest);
    transition:border-color .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease);
  }
  .tip-card:hover{border-color:var(--lime);box-shadow:var(--shadow-hover);transform:translateY(-3px);}
  .tip-num{
    font-family:"Space Grotesk",sans-serif;font-size:24px;font-weight:700;
    color:var(--lime-deep);line-height:1;
  }
  .tip-title{font-size:1.125rem;font-weight:700;line-height:1.4;}
  .tip-desc{font-size:14.5px;line-height:1.8;color:var(--steel);}
  .tip-link{
    margin-top:auto;padding-top:8px;font-size:13.5px;font-weight:700;color:var(--ink);
    display:inline-flex;align-items:center;gap:6px;
  }
  .tip-link .arrow{transition:transform .22s var(--ease);}
  .tip-card:hover .tip-link .arrow{transform:translateX(4px);}
  .tip-card:hover .tip-link{color:var(--lime-deep);}

  .side-col{display:flex;flex-direction:column;gap:20px;position:sticky;top:104px;}
  .side-card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
    padding:24px;box-shadow:var(--shadow-rest);
  }
  .side-card h3{font-size:1.0625rem;font-weight:700;margin-bottom:16px;}
  .rank-item{
    display:flex;gap:12px;padding:12px 0;border-top:1px solid var(--line);
  }
  .rank-item:first-of-type{border-top:0;padding-top:0;}
  .rank-no{
    font-family:"Space Grotesk",sans-serif;font-size:13px;font-weight:700;color:var(--lime-deep);
    min-width:22px;padding-top:2px;
  }
  .rank-title{font-size:14px;line-height:1.6;color:var(--ink-2);}
  .rank-item:hover .rank-title{color:var(--ink);text-decoration:underline;text-decoration-color:var(--lime);text-underline-offset:4px;text-decoration-thickness:2px;}
  .download-mini{
    background:var(--ink);border-radius:var(--r-lg);padding:24px;color:#fff;
    border:1px solid rgba(255,255,255,.1);
    background-image:radial-gradient(rgba(201,245,63,.16) 1px,transparent 1px);
    background-size:14px 14px;
  }
  .download-mini h3{color:#fff;font-size:1.0625rem;margin-bottom:8px;}
  .download-mini p{font-size:13.5px;line-height:1.7;color:rgba(255,255,255,.66);margin-bottom:16px;}
  .download-mini .btn{width:100%;height:46px;font-size:14px;}
  .download-mini .ver{
    margin-top:12px;font-size:12px;letter-spacing:.06em;color:rgba(255,255,255,.45);
    font-family:"Space Grotesk",sans-serif;
  }

  /* ---------- 三步 ---------- */
  .steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
  .step{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
    padding:28px 24px;position:relative;
    transition:border-color .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease);
  }
  .step:hover{border-color:var(--lime);box-shadow:var(--shadow-hover);transform:translateY(-3px);}
  .step::before{
    content:"";position:absolute;left:24px;top:0;width:3px;height:34px;border-radius:0 0 3px 3px;
    background:var(--lime);
  }
  .step-no{font-family:"Space Grotesk",sans-serif;font-size:13px;letter-spacing:.16em;color:var(--steel);margin-bottom:10px;}
  .step h3{font-size:1.125rem;font-weight:700;margin-bottom:8px;}
  .step p{font-size:14.5px;line-height:1.8;color:var(--steel);}

  /* ---------- 平台支持条 ---------- */
  .platform-band{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
    padding:28px;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  }
  .platform-item{display:flex;gap:12px;align-items:flex-start;}
  .platform-dot{
    width:36px;height:36px;flex:0 0 auto;border-radius:10px;
    background:rgba(201,245,63,.28);border:1px solid var(--lime-deep);
    display:grid;place-items:center;font-family:"Space Grotesk",sans-serif;font-size:12px;font-weight:700;color:var(--ink);
  }
  .platform-item h4{font-size:15px;font-weight:700;margin-bottom:4px;}
  .platform-item p{font-size:13.5px;line-height:1.7;color:var(--steel);}

  /* ---------- FAQ ---------- */
  .faq-wrap{max-width:860px;}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;
    padding:22px 0;font-size:17px;font-weight:700;line-height:1.5;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-icon{
    flex:0 0 auto;width:30px;height:30px;border-radius:50%;
    border:1px solid var(--lime-deep);display:grid;place-items:center;
    color:var(--lime-deep);font-size:16px;font-weight:700;line-height:1;
    transition:background .2s var(--ease),color .2s var(--ease);
  }
  .faq-icon::before{content:"+";}
  .faq-item[open] .faq-icon{background:var(--lime);border-color:var(--lime);color:var(--ink);}
  .faq-item[open] .faq-icon::before{content:"−";}
  .faq-item summary:hover .faq-icon{background:rgba(201,245,63,.16);}
  .faq-answer{padding:0 0 22px;color:var(--steel);font-size:15px;line-height:1.85;max-width:720px;}

  /* ---------- CTA 深色面板 ---------- */
  .cta-panel{
    background:var(--ink);color:#fff;border-radius:24px;padding:44px;
    display:grid;grid-template-columns:1fr 200px;gap:36px;align-items:center;
    background-image:radial-gradient(rgba(201,245,63,.18) 1px,transparent 1px);
    background-size:16px 16px;
    border:1px solid rgba(255,255,255,.1);
  }
  .cta-panel h2{color:#fff;font-size:clamp(1.6rem,2.8vw,2.2rem);line-height:1.2;font-weight:700;}
  .cta-panel p{margin-top:12px;color:rgba(255,255,255,.68);font-size:15px;line-height:1.8;max-width:600px;}
  .cta-buttons{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
  .cta-buttons .btn{height:48px;padding:0 24px;font-size:14.5px;}
  .cta-note{margin-top:16px;font-size:13px;color:rgba(255,255,255,.45);font-family:"Space Grotesk",sans-serif;letter-spacing:.04em;}
  .qr-box{
    background:var(--surface);border-radius:14px;padding:10px;text-align:center;
  }
  .qr-box .qr{
    width:100%;aspect-ratio:1/1;border-radius:8px;
    background:
      linear-gradient(90deg,rgba(20,22,26,.88) 6px,transparent 6px) 0 0/18px 18px,
      linear-gradient(rgba(20,22,26,.88) 6px,transparent 6px) 0 0/18px 18px,
      var(--paper);
    background-blend-mode:multiply;
    border:1px solid var(--line);
  }
  .qr-box span{display:block;margin-top:8px;font-size:12px;color:var(--steel);}

  /* ---------- 页脚 ---------- */
  .site-footer{
    margin-top:80px;background:var(--ink);color:#fff;
    border-radius:24px 24px 0 0;padding:56px 0 28px;
    background-image:radial-gradient(rgba(201,245,63,.1) 1px,transparent 1px);
    background-size:18px 18px;
  }
  .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;}
  .footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:280px;}
  .footer-brand .logo-text{color:#fff;}
  .footer-col h4{font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:rgba(255,255,255,.42);margin-bottom:16px;font-weight:700;}
  .footer-col a{
    display:block;font-size:14px;color:rgba(255,255,255,.68);margin-bottom:12px;
    transition:color .2s var(--ease),transform .2s var(--ease);
  }
  .footer-col a:hover{color:var(--lime);transform:translateX(-2px);}
  .footer-bottom{
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    margin-top:44px;padding-top:24px;border-top:1px solid rgba(255,255,255,.08);
    font-size:13px;color:rgba(255,255,255,.48);
  }
  .to-top{
    width:42px;height:42px;border-radius:50%;border:1px solid rgba(255,255,255,.24);
    display:grid;place-items:center;color:#fff;font-size:16px;
    transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
  }
  .to-top:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-2px);}

  /* ---------- 入场动效 ---------- */
  .reveal{opacity:0;transform:translateY(12px);transition:opacity .4s var(--ease),transform .4s var(--ease);}
  .reveal.in{opacity:1;transform:none;}

  /* ---------- 响应式 ---------- */
  @media (max-width:1180px){
    .nav-links a{padding:0 8px;font-size:13px;}
    .nav-cta{padding:0 16px;font-size:13.5px;}
  }
  @media (max-width:1023px){
    .nav-links{display:none;}
    .nav-cta{display:none;}
    .nav-toggle{display:flex;margin-left:auto;}
    .nav-card{justify-content:space-between;}
    .hero-grid{grid-template-columns:1fr;gap:36px;}
    .hero-visual{order:-1;}
    .tips-layout{grid-template-columns:1fr;}
    .side-col{position:static;}
    .steps-grid{grid-template-columns:1fr;}
    .platform-band{grid-template-columns:1fr 1fr;}
    .cta-panel{grid-template-columns:1fr;padding:34px;}
    .qr-box{max-width:180px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
    .section{padding:64px 0;}
  }
  @media (max-width:639px){
    .container{padding:0 20px;}
    .site-header{padding:12px 16px 8px;}
    .hero{padding:32px 0 52px;}
    .tip-grid{grid-template-columns:1fr;}
    .platform-band{grid-template-columns:1fr;padding:22px;}
    .footer-grid{grid-template-columns:1fr;}
    .section{padding:56px 0;}
    .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
    .btn{width:100%;}
    .hero-actions .btn{width:100%;}
    .cta-buttons .btn{width:100%;}
    .hero-sub{font-size:16px;}
    .float-badge{padding:6px 10px;font-size:11.5px;}
  }
  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{animation:none!important;transition:none!important;}
    .reveal{opacity:1;transform:none;}
    html{scroll-behavior:auto;}
  }

/* roulang page: category6 */
:root{
    --ink:#14161A;
    --ink-2:#2A2E35;
    --paper:#F6F4EF;
    --surface:#FFFDF8;
    --line:#E4DFD3;
    --lime:#C9F53F;
    --lime-deep:#A8D42A;
    --steel:#6C7480;
    --ember:#FF6A2B;
    --r-lg:20px;
    --r-md:16px;
    --r-sm:12px;
    --shadow-sm:0 1px 2px rgba(20,22,26,.05);
    --shadow-hover:0 18px 40px -12px rgba(20,22,26,.18);
    --ease:cubic-bezier(.2,.8,.2,1);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
  }
  img{display:block;max-width:100%;height:auto}
  a{color:inherit}
  button,input,textarea,select{font-family:inherit}
  [hidden]{display:none !important}
  .container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
  .mono{font-family:"Space Grotesk","Noto Sans SC",monospace;font-variant-numeric:tabular-nums}
  a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
    outline:2px solid var(--lime);outline-offset:3px;border-radius:8px;
  }

  /* ---------- header / nav ---------- */
  .site-header{
    position:sticky;top:0;z-index:80;
    padding:16px 0 0;
    background:linear-gradient(180deg,rgba(246,244,239,.94) 0%,rgba(246,244,239,.62) 70%,rgba(246,244,239,0) 100%);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
  }
  .nav-shell{
    display:flex;align-items:center;gap:16px;
    background:var(--ink);
    border:1px solid rgba(201,245,63,.18);
    border-radius:var(--r-lg);
    padding:12px 16px;
    min-height:72px;
    box-shadow:0 12px 30px -18px rgba(20,22,26,.55);
  }
  .logo{
    display:inline-flex;align-items:center;gap:10px;
    color:#fff;text-decoration:none;font-weight:800;font-size:18px;letter-spacing:.01em;
    white-space:nowrap;
  }
  .logo-mark{
    position:relative;display:block;width:24px;height:24px;border-radius:7px;
    background:var(--lime);flex:none;
  }
  .logo-mark::after{
    content:"";position:absolute;right:5px;top:5px;bottom:5px;width:6px;border-radius:2px;background:var(--ink);
  }
  .nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
  .nav-links a{
    display:inline-flex;align-items:center;height:40px;padding:0 11px;
    border-radius:var(--r-sm);
    font-size:13.5px;line-height:1;color:rgba(255,255,255,.76);
    text-decoration:none;white-space:nowrap;
    transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
  }
  .nav-links a:hover{background:rgba(201,245,63,.12);color:#fff;transform:translateY(-1px)}
  .nav-links a.active{background:var(--lime);color:var(--ink);font-weight:700}
  .nav-actions{display:flex;align-items:center;gap:10px;flex:none;margin-left:8px}
  .nav-toggle{
    display:none;width:44px;height:44px;border-radius:var(--r-sm);
    background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
    color:#fff;font-size:16px;cursor:pointer;
    transition:background .2s var(--ease),border-color .2s var(--ease);
  }
  .nav-toggle:hover{background:rgba(201,245,63,.16);border-color:var(--lime)}
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:999px;text-decoration:none;font-weight:700;
    border:1px solid transparent;cursor:pointer;
    transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
  }
  .btn i{transition:transform .22s var(--ease)}
  .btn-sm{height:38px;padding:0 16px;font-size:13.5px}
  .btn-md{height:44px;padding:0 22px;font-size:14.5px}
  .btn-lg{height:52px;padding:0 28px;font-size:15.5px}
  .btn-lime{background:var(--lime);color:var(--ink)}
  .btn-lime:hover{background:#d6ff5a;transform:translateY(-2px);box-shadow:0 12px 24px -14px rgba(201,245,63,.9)}
  .btn-dark{background:var(--ink);color:#fff}
  .btn-dark:hover{background:var(--lime);color:var(--ink);transform:translateY(-2px);box-shadow:var(--shadow-hover)}
  .btn-dark:hover i{transform:translateX(4px)}
  .btn-ghost{background:transparent;color:var(--ink);border-color:rgba(20,22,26,.2)}
  .btn-ghost:hover{border-color:var(--lime-deep);background:rgba(201,245,63,.08);transform:translateY(-2px)}
  .btn-ghost:hover i{transform:translateX(4px)}
  .btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.24)}
  .btn-outline-light:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-2px)}

  /* mobile drawer */
  .drawer{
    position:fixed;inset:0;z-index:120;display:none;
    padding:16px;background:rgba(20,22,26,.62);
    backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  }
  .drawer.open{display:block}
  .drawer-panel{
    background:var(--ink);
    border:1px solid rgba(201,245,63,.22);
    border-radius:var(--r-lg);
    padding:18px;
    max-height:calc(100vh - 32px);
    overflow-y:auto;
    box-shadow:0 30px 60px -20px rgba(0,0,0,.6);
  }
  .drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
  .drawer-close{
    width:44px;height:44px;border-radius:var(--r-sm);
    background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
    color:#fff;font-size:16px;cursor:pointer;
  }
  .drawer-close:hover{background:rgba(201,245,63,.16);border-color:var(--lime)}
  .drawer-links{display:flex;flex-direction:column;border-top:1px solid rgba(255,255,255,.08)}
  .drawer-links a{
    display:flex;align-items:center;justify-content:space-between;gap:10px;
    min-height:56px;padding:0 4px;
    color:rgba(255,255,255,.82);text-decoration:none;font-size:15.5px;
    border-bottom:1px solid rgba(255,255,255,.08);
    transition:color .2s var(--ease),padding-left .2s var(--ease);
  }
  .drawer-links a:hover,.drawer-links a.active{color:var(--lime);padding-left:10px}
  .drawer-links a.active{font-weight:700}
  .drawer-foot{margin-top:18px}
  .drawer-foot .btn{width:100%}
  .drawer-ver{margin-top:12px;font-size:12px;color:rgba(255,255,255,.45);letter-spacing:.06em}

  /* ---------- hero ---------- */
  .faq-hero{position:relative;overflow:hidden;padding:64px 0 52px}
  .faq-hero::before{
    content:"";position:absolute;right:-160px;top:-200px;width:620px;height:620px;border-radius:50%;
    background:radial-gradient(circle,rgba(201,245,63,.22) 0%,rgba(201,245,63,0) 68%);
    pointer-events:none;
  }
  .hero-photo{
    position:absolute;right:0;top:0;height:100%;width:46%;
    background-image:url('/assets/images/backpic/back-2.png');
    background-size:cover;background-position:center;
    opacity:.16;
    -webkit-mask-image:linear-gradient(90deg,transparent 0%,#000 55%);
    mask-image:linear-gradient(90deg,transparent 0%,#000 55%);
    pointer-events:none;
  }
  .hero-inner{position:relative;z-index:2;max-width:820px}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-family:"Space Grotesk","Noto Sans SC",sans-serif;
    font-size:11.5px;letter-spacing:.18em;text-transform:uppercase;
    color:var(--steel);margin:0 0 18px;
  }
  .eyebrow::before{content:"";width:26px;height:2px;background:var(--lime);display:block;border-radius:2px}
  .faq-hero h1{
    font-size:clamp(2.1rem,4.6vw,3.5rem);
    line-height:1.1;font-weight:900;margin:0 0 18px;
  }
  .faq-hero h1 .thin{font-weight:400;display:inline-block;position:relative}
  .faq-hero h1 .thin::after{
    content:"";position:absolute;left:0;right:0;bottom:4px;height:4px;border-radius:2px;
    background:var(--lime);opacity:.85;
  }
  .lede{font-size:17px;line-height:1.8;color:var(--ink-2);margin:0 0 28px;max-width:660px}

  .search-box{
    display:flex;align-items:center;gap:10px;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-md);
    padding:8px 8px 8px 20px;
    max-width:640px;
    box-shadow:var(--shadow-sm);
    transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .search-box:focus-within{border-color:var(--lime-deep);box-shadow:0 0 0 4px rgba(201,245,63,.2)}
  .search-box i{color:var(--steel);font-size:16px}
  .search-box input{
    flex:1;min-width:0;height:56px;border:0;background:transparent;
    font-size:16px;color:var(--ink);outline:none;
  }
  .search-box input::placeholder{color:#9aa1aa}
  .search-btn{
    width:56px;height:56px;flex:none;border:0;border-radius:var(--r-sm);
    background:var(--lime);color:var(--ink);font-size:18px;cursor:pointer;
    transition:background .2s var(--ease),transform .2s var(--ease);
  }
  .search-btn:hover{background:#d6ff5a;transform:translateY(-1px)}
  .hero-meta{
    display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;
    margin-top:20px;font-size:13.5px;color:var(--steel);
  }
  .hero-meta span{display:inline-flex;align-items:center;gap:7px}
  .hero-meta span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--lime-deep);display:block}

  /* ---------- section base ---------- */
  .section{padding:72px 0}
  .section-tight{padding:52px 0}
  .section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:36px}
  .section-head h2{font-size:clamp(1.6rem,3vw,2.3rem);line-height:1.18;font-weight:700;margin:0}
  .section-head p{margin:8px 0 0;color:var(--steel);font-size:15px;max-width:560px}
  .tag-line{
    font-family:"Space Grotesk","Noto Sans SC",sans-serif;
    font-size:11.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--lime-deep);
    margin:0 0 10px;font-weight:700;
  }

  /* chips */
  .chip-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:8px}
  .chip{
    height:40px;padding:0 18px;border-radius:999px;
    background:var(--surface);border:1px solid var(--line);
    color:var(--ink-2);font-size:14px;font-weight:500;cursor:pointer;
    transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
  }
  .chip:hover{border-color:var(--lime-deep);transform:translateY(-1px)}
  .chip.active{background:var(--ink);color:#fff;border-color:var(--ink);font-weight:700}

  /* faq accordion */
  .faq-panel{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-lg);
    padding:10px 28px 14px;
    box-shadow:var(--shadow-sm);
  }
  .faq-group{padding:18px 0 6px}
  .faq-group + .faq-group{border-top:1px solid var(--line)}
  .faq-group-label{
    font-family:"Space Grotesk","Noto Sans SC",sans-serif;
    font-size:11.5px;letter-spacing:.18em;text-transform:uppercase;
    color:var(--steel);font-weight:700;margin:0 0 4px;
  }
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-item:last-child{border-bottom:0}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
    padding:20px 2px;background:none;border:0;cursor:pointer;text-align:left;
    font-size:17px;font-weight:700;color:var(--ink);line-height:1.55;
    transition:color .2s var(--ease);
  }
  .faq-q:hover{color:var(--ink)}
  .faq-q:hover .faq-icon{background:rgba(201,245,63,.28)}
  .faq-icon{
    width:30px;height:30px;flex:none;border-radius:999px;
    border:1.5px solid var(--lime-deep);color:var(--ink);
    display:grid;place-items:center;font-size:13px;
    transition:transform .26s var(--ease),background .2s var(--ease);
  }
  .faq-item.open .faq-icon{transform:rotate(45deg);background:var(--lime)}
  .faq-a{max-height:0;overflow:hidden;opacity:0;transition:max-height .3s var(--ease),opacity .24s var(--ease)}
  .faq-item.open .faq-a{max-height:420px;opacity:1}
  .faq-a p{
    margin:0 0 20px;padding-right:46px;
    font-size:15px;line-height:1.85;color:var(--steel);
  }
  .faq-empty{
    text-align:center;padding:48px 20px;color:var(--steel);
  }
  .faq-empty i{font-size:36px;color:var(--line);display:block;margin-bottom:14px}
  .faq-empty strong{display:block;color:var(--ink);font-size:17px;margin-bottom:6px}

  /* support card */
  .support-card{
    display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-lg);
    padding:36px;
    box-shadow:var(--shadow-sm);
    transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
  }
  .support-card:hover{border-color:var(--lime);box-shadow:var(--shadow-hover)}
  .support-card h2{font-size:clamp(1.5rem,2.4vw,1.95rem);line-height:1.25;margin:0 0 12px;font-weight:700}
  .support-card p{margin:0;color:var(--steel);font-size:15px;line-height:1.85}
  .support-form{display:flex;gap:10px}
  .support-form input{
    flex:1;min-width:0;height:48px;padding:0 16px;
    border-radius:var(--r-sm);border:1px solid var(--line);background:var(--paper);
    font-size:14.5px;color:var(--ink);outline:none;
    transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .support-form input:focus{border-color:var(--lime-deep);box-shadow:0 0 0 4px rgba(201,245,63,.18)}
  .form-note{font-size:12.5px;color:var(--steel);margin:12px 0 0}
  .form-alert{
    display:none;margin-top:12px;font-size:13.5px;color:#B4441A;
  }
  .form-alert.show{display:block}
  .form-ok{
    display:none;margin-top:12px;font-size:13.5px;color:#3F6B12;
  }
  .form-ok.show{display:block}

  /* entry cards */
  .entry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
  .entry-card{
    display:flex;flex-direction:column;
    background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
    overflow:hidden;text-decoration:none;
    box-shadow:var(--shadow-sm);
    transition:border-color .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease);
  }
  .entry-card:hover{border-color:var(--lime);box-shadow:var(--shadow-hover);transform:translateY(-3px)}
  .entry-thumb{position:relative;aspect-ratio:16/9;background:var(--paper);overflow:hidden}
  .entry-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
  .entry-card:hover .entry-thumb img{transform:scale(1.03)}
  .entry-badge{
    position:absolute;left:14px;top:14px;
    background:var(--lime);color:var(--ink);
    font-size:12px;font-weight:700;padding:4px 10px;border-radius:8px;
  }
  .entry-body{padding:20px 22px 24px}
  .entry-body h3{margin:0 0 8px;font-size:1.1rem;font-weight:700;line-height:1.4}
  .entry-body p{margin:0 0 14px;font-size:14px;color:var(--steel);line-height:1.75}
  .entry-link{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;font-weight:700;color:var(--ink)}
  .entry-card:hover .entry-link{color:var(--lime-deep)}
  .entry-card:hover .entry-link i{transform:translateX(4px)}
  .entry-link i{transition:transform .22s var(--ease)}

  /* quick stats strip */
  .stat-strip{
    display:grid;grid-template-columns:repeat(3,1fr);
    border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface);
    overflow:hidden;margin-bottom:40px;
  }
  .stat-cell{padding:24px 26px;border-right:1px solid var(--line)}
  .stat-cell:last-child{border-right:0}
  .stat-num{font-family:"Space Grotesk",sans-serif;font-size:28px;font-weight:700;color:var(--lime-deep);line-height:1.1}
  .stat-label{font-size:14px;color:var(--ink);font-weight:700;margin-top:6px}
  .stat-desc{font-size:13px;color:var(--steel);margin-top:2px}

  /* ---------- footer ---------- */
  .site-footer{
    background:var(--ink);color:rgba(255,255,255,.72);
    border-radius:24px 24px 0 0;
    margin-top:36px;
    padding:64px 0 28px;
    position:relative;
    overflow:hidden;
  }
  .site-footer::before{
    content:"";position:absolute;inset:0;
    background-image:radial-gradient(rgba(255,255,255,.07) 1px,transparent 1px);
    background-size:18px 18px;
    opacity:.5;pointer-events:none;
  }
  .site-footer .container{position:relative;z-index:2}
  .footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:36px;padding-bottom:40px}
  .footer-brand .logo{color:#fff;margin-bottom:16px}
  .footer-brand p{font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.6);max-width:300px;margin:0}
  .footer-col h4{margin:0 0 16px;font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:rgba(255,255,255,.45);font-weight:700}
  .footer-col a{
    display:block;font-size:14px;color:rgba(255,255,255,.72);text-decoration:none;
    padding:6px 0;transition:color .2s var(--ease),transform .2s var(--ease);
  }
  .footer-col a:hover{color:var(--lime);transform:translateX(2px)}
  .footer-bottom{
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
    font-size:13px;color:rgba(255,255,255,.5);
  }
  .to-top{
    width:44px;height:44px;border-radius:999px;flex:none;
    border:1px solid rgba(255,255,255,.22);color:rgba(255,255,255,.8);
    display:grid;place-items:center;text-decoration:none;font-size:16px;
    transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
  }
  .to-top:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-2px)}

  /* reveal */
  .reveal{opacity:0;transform:translateY(12px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
  .reveal.in{opacity:1;transform:none}

  /* ---------- responsive ---------- */
  @media (max-width:1180px){
    .nav-links a{padding:0 9px;font-size:13px}
  }
  @media (max-width:1023px){
    .nav-links{display:none}
    .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
    .nav-actions{margin-left:auto}
    .hero-photo{width:70%;opacity:.12}
    .entry-grid{grid-template-columns:1fr 1fr}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
    .support-card{grid-template-columns:1fr;gap:24px;padding:28px}
  }
  @media (max-width:768px){
    .container{padding:0 20px}
    .site-header{padding-top:12px}
    .nav-shell{padding:10px 12px;min-height:64px}
    .logo{font-size:16.5px}
    .nav-actions .btn{display:none}
    .faq-hero{padding:44px 0 36px}
    .lede{font-size:15.5px}
    .section{padding:52px 0}
    .section-tight{padding:40px 0}
    .faq-panel{padding:6px 18px 10px;border-radius:var(--r-md)}
    .faq-q{font-size:15.5px;padding:18px 0}
    .faq-a p{padding-right:0;font-size:14.5px}
    .stat-strip{grid-template-columns:1fr}
    .stat-cell{border-right:0;border-bottom:1px solid var(--line)}
    .stat-cell:last-child{border-bottom:0}
    .search-box{padding:6px 6px 6px 16px}
    .search-box input{height:48px;font-size:15px}
    .search-btn{width:48px;height:48px}
    .entry-grid{grid-template-columns:1fr}
    .support-form{flex-direction:column}
    .support-form .btn{width:100%}
    .footer-grid{grid-template-columns:1fr;gap:24px;padding-bottom:28px}
    .site-footer{padding:48px 0 24px;border-radius:20px 20px 0 0}
    .footer-bottom{flex-direction:column;align-items:flex-start;gap:14px}
  }
  @media (max-width:520px){
    .faq-hero h1{font-size:1.9rem}
    .chip{height:38px;padding:0 14px;font-size:13px}
    .section-head{margin-bottom:26px}
    .support-card{padding:22px}
  }
  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{
      animation-duration:.001ms !important;
      animation-iteration-count:1 !important;
      transition-duration:.001ms !important;
      scroll-behavior:auto !important;
    }
    .reveal{opacity:1;transform:none}
  }