/* roulang page: index */
:root{
  --ink:#15171C;
  --ink-2:#23262E;
  --paper:#F6F4EF;
  --surface:#FFFFFF;
  --line:#E5E0D6;
  --muted:#62656E;
  --body-text:#3A3D45;
  --lime:#C8F169;
  --lime-deep:#A8D93C;
  --forest:#12332C;
  --danger:#C8452F;
  --r-card:20px;
  --r-block:28px;
  --r-img:14px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(21,23,28,.05);
  --shadow-2:0 18px 40px rgba(21,23,28,.10);
  --shadow-nav:0 10px 30px rgba(21,23,28,.08);
  --ease:cubic-bezier(.22,.61,.36,1);
  --bs-body-bg:var(--paper);
  --bs-body-color:var(--body-text);
  --bs-border-radius:var(--r-card);
  --bs-link-color:var(--ink);
  --bs-link-hover-color:var(--ink-2);
  --bs-font-sans-serif:"HarmonyOS Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--body-text);
  font-family:"HarmonyOS Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .24s var(--ease);}
a:hover{color:var(--ink);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--ink);outline-offset:3px;}
.num{font-family:"Inter","Space Grotesk","SFMono-Regular",ui-monospace,monospace;font-variant-numeric:tabular-nums;letter-spacing:-.02em;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:clamp(64px,8vw,112px) 0;}
.section-tight{padding:clamp(48px,6vw,80px) 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;color:var(--muted);
  padding:6px 12px;border:1px solid var(--line);border-radius:var(--r-pill);
  background:rgba(255,255,255,.6);
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--lime-deep);}
.section-title{
  font-size:clamp(26px,3.4vw,40px);line-height:1.2;font-weight:700;
  color:var(--ink);letter-spacing:-.02em;margin:14px 0 16px;
}
.section-desc{font-size:16px;line-height:1.85;color:var(--body-text);max-width:720px;}
.section-head{margin-bottom:clamp(28px,4vw,52px);}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1030;
  padding:18px 0;transition:padding .26s var(--ease);
}
.site-header.is-scrolled{padding:10px 0;}
.nav-pill{
  display:flex;align-items:center;gap:20px;
  background:rgba(246,244,239,.72);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid rgba(229,224,214,.9);
  border-radius:var(--r-pill);
  padding:8px 10px 8px 16px;
  transition:background .26s var(--ease),box-shadow .26s var(--ease);
}
.site-header.is-scrolled .nav-pill{
  background:rgba(246,244,239,.97);
  box-shadow:var(--shadow-nav);
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:26px;height:26px;border-radius:9px;background:var(--ink);
  position:relative;flex:0 0 auto;
}
.brand-mark::after{
  content:"";position:absolute;inset:7px;border-radius:3px;background:var(--lime);
}
.brand-text{
  font-size:15px;font-weight:700;color:var(--ink);letter-spacing:-.01em;white-space:nowrap;
}
.nav-menu{
  display:flex;align-items:center;gap:2px;flex:1 1 auto;justify-content:center;
}
.nav-menu a{
  position:relative;display:inline-block;padding:8px 11px;
  font-size:14px;color:var(--body-text);border-radius:var(--r-pill);
  white-space:nowrap;
}
.nav-menu a::after{
  content:"";position:absolute;left:11px;right:11px;bottom:3px;height:1px;
  background:var(--ink);transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.nav-menu a:hover{color:var(--ink);}
.nav-menu a:hover::after,.nav-menu a:focus-visible::after{transform:scaleX(1);}
.nav-menu a.is-active{color:var(--ink);font-weight:600;}
.nav-menu a.is-active::before{
  content:"";position:absolute;left:50%;bottom:-3px;transform:translateX(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--lime-deep);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:50%;
  border:1px solid var(--line);background:var(--surface);
  align-items:center;justify-content:center;cursor:pointer;padding:0;
  transition:background .22s var(--ease);
}
.nav-toggle:hover{background:var(--lime);}
.nav-toggle span{
  display:block;width:16px;height:1.6px;background:var(--ink);border-radius:2px;
  position:relative;
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:1.6px;background:var(--ink);border-radius:2px;
  transition:transform .24s var(--ease);
}
.nav-toggle span::before{top:-5px;}
.nav-toggle span::after{top:5px;}
.mobile-panel{
  display:none;margin-top:12px;padding:10px;
  background:rgba(246,244,239,.99);
  border:1px solid var(--line);border-radius:24px;
  box-shadow:var(--shadow-2);
}
.mobile-panel.open{display:block;}
.mobile-panel a{
  display:flex;align-items:center;height:44px;padding:0 16px;border-radius:16px;
  font-size:15px;color:var(--ink);
}
.mobile-panel a:hover,.mobile-panel a:focus{background:rgba(200,241,105,.4);}
.mobile-panel .mobile-cta{
  margin-top:6px;background:var(--lime);font-weight:600;justify-content:center;
}

/* ---------- 按钮与标签 ---------- */
.btn-lime,.btn-ghost,.btn-ink,.btn-outline{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:52px;padding:0 28px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:background .24s var(--ease),color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.btn-lime{background:var(--lime);color:var(--ink);}
.btn-lime:hover{background:var(--lime-deep);color:var(--ink);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.42);}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;transform:translateY(-2px);}
.btn-ink{background:var(--ink);color:#fff;}
.btn-ink:hover{background:var(--ink-2);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-outline:hover{background:var(--ink);color:#fff;transform:translateY(-2px);}
.btn-sm{height:42px;padding:0 20px;font-size:14px;}
.btn-block{width:100%;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;letter-spacing:.06em;color:var(--ink);
  padding:6px 12px;border-radius:var(--r-pill);
  background:rgba(200,241,105,.28);border:1px solid rgba(200,241,105,.9);
}
.tag-soft{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.4);color:#fff;}

/* ---------- Hero ---------- */
.hero{
  position:relative;min-height:84vh;display:flex;align-items:center;
  padding:150px 0 84px;overflow:hidden;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(21,23,28,.9) 0%,rgba(21,23,28,.66) 52%,rgba(21,23,28,.36) 100%);
}
.hero-inner{position:relative;z-index:2;max-width:780px;color:#fff;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;color:rgba(255,255,255,.86);
  padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid rgba(200,241,105,.55);background:rgba(200,241,105,.12);
  margin-bottom:22px;
}
.hero-title{
  font-size:clamp(34px,5.2vw,62px);line-height:1.12;font-weight:700;
  letter-spacing:-.02em;color:#fff;margin-bottom:20px;
}
.hero-title .hl{
  background-image:linear-gradient(transparent 66%,rgba(200,241,105,.62) 66%);
  -webkit-box-decoration-break:clone;box-decoration-break:clone;
}
.hero-sub{
  font-size:clamp(15px,1.6vw,17px);line-height:1.85;
  color:rgba(255,255,255,.84);max-width:640px;margin-bottom:32px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:clamp(24px,4vw,56px);
  margin-top:46px;padding-top:26px;border-top:1px solid rgba(255,255,255,.18);
}
.hero-stats .stat-num{font-size:clamp(22px,2.6vw,28px);font-weight:700;color:#fff;line-height:1.2;}
.hero-stats .stat-label{font-size:13px;color:rgba(255,255,255,.66);margin-top:4px;}
.hero-scroll{
  position:absolute;left:0;right:0;bottom:22px;z-index:2;
  text-align:center;font-size:12px;letter-spacing:.16em;color:rgba(255,255,255,.55);
}

/* ---------- 双栏故事 ---------- */
.split{display:grid;grid-template-columns:5fr 7fr;gap:clamp(28px,4vw,56px);align-items:start;}
.split-copy p{font-size:16px;line-height:1.9;color:var(--body-text);margin-bottom:16px;}
.split-copy .lead{font-size:17px;color:var(--ink);}
.steps{border-top:1px solid var(--line);}
.step{display:flex;gap:20px;padding:24px 0;border-bottom:1px solid var(--line);}
.step-no{
  flex:0 0 auto;height:28px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--lime);color:var(--ink);
  font-size:13px;font-weight:700;display:inline-flex;align-items:center;
}
.step h3{font-size:18px;font-weight:600;color:var(--ink);margin-bottom:6px;line-height:1.4;}
.step p{font-size:14.5px;line-height:1.8;color:var(--muted);}

/* ---------- 精选卡 ---------- */
.feature-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;}
.feature-side{display:grid;gap:24px;}
.feature-card{
  position:relative;display:block;overflow:hidden;
  border-radius:var(--r-card);border:1px solid var(--line);
  background:var(--ink);box-shadow:var(--shadow-1);min-height:200px;
  transition:transform .26s var(--ease),box-shadow .26s var(--ease);
}
.feature-card.tall{min-height:420px;}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.feature-card .thumb{position:absolute;inset:0;}
.feature-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.feature-card:hover .thumb img{transform:scale(1.04);}
.feature-card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(21,23,28,.05) 30%,rgba(21,23,28,.88) 100%);
}
.feature-body{
  position:relative;z-index:2;height:100%;
  display:flex;flex-direction:column;justify-content:flex-end;
  padding:26px;min-height:inherit;
}
.feature-body h3{font-size:20px;line-height:1.4;color:#fff;margin:12px 0 8px;}
.feature-card.tall .feature-body h3{font-size:24px;}
.feature-body p{font-size:14px;line-height:1.75;color:rgba(255,255,255,.78);}
.feature-arrow{
  position:absolute;right:24px;bottom:24px;z-index:3;
  width:34px;height:34px;border-radius:50%;
  display:grid;place-items:center;background:var(--lime);color:var(--ink);
  font-size:15px;transition:transform .26s var(--ease);
}
.feature-card:hover .feature-arrow{transform:translateX(4px);}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);
  transition:transform .26s var(--ease),box-shadow .26s var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);color:inherit;}
.news-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--line);}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.news-body h3{
  font-size:17px;line-height:1.45;font-weight:600;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body p{
  font-size:14px;line-height:1.75;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;padding-top:12px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted);
}
.news-foot .arrow{color:var(--ink);transition:transform .26s var(--ease);}
.news-card:hover .news-foot .arrow{transform:translateX(4px);}
.list-empty{
  border:1px dashed var(--line);border-radius:var(--r-card);
  padding:48px 24px;text-align:center;background:rgba(255,255,255,.6);
}
.list-empty p{font-size:15px;color:var(--muted);margin-bottom:14px;}
.list-more{text-align:center;margin-top:40px;}
.text-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--ink);padding-bottom:2px;
}
.text-link:hover{color:var(--ink-2);border-color:var(--lime-deep);}

/* ---------- 信任背书 ---------- */
.proof{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-block);
  padding:clamp(28px,4vw,52px);
  display:grid;grid-template-columns:5fr 7fr;gap:clamp(24px,4vw,56px);
}
.proof-stats{display:grid;gap:26px;}
.proof-item{border-left:2px solid var(--lime);padding-left:18px;}
.proof-item .big{font-size:clamp(40px,4vw,56px);font-weight:700;color:var(--ink);line-height:1.05;}
.proof-item .label{font-size:13px;color:var(--muted);letter-spacing:.06em;margin-top:6px;}
.proof-copy p{font-size:15.5px;line-height:1.9;color:var(--body-text);margin-bottom:22px;}
.partner-list{display:flex;flex-wrap:wrap;gap:10px 18px;}
.partner-list span{
  font-size:13px;color:#8B8E96;letter-spacing:.04em;
  padding:6px 14px;border:1px solid var(--line);border-radius:var(--r-pill);
  background:rgba(246,244,239,.7);
}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:8fr 4fr;gap:clamp(24px,4vw,48px);align-items:start;}
.faq-accordion .accordion-item{background:transparent;border:0;border-top:1px solid var(--line);}
.faq-accordion .accordion-item:last-child{border-bottom:1px solid var(--line);}
.faq-accordion .accordion-button{
  background:transparent;color:var(--ink);
  font-size:17px;font-weight:600;line-height:1.5;
  padding:22px 0;box-shadow:none;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--ink);background:transparent;box-shadow:none;}
.faq-accordion .accordion-button:focus{box-shadow:none;border-color:transparent;}
.faq-accordion .accordion-button:focus-visible{outline:2px solid var(--ink);outline-offset:4px;}
.faq-accordion .accordion-button::after{
  content:"+";position:static;flex:0 0 auto;
  width:24px;height:24px;border-radius:50%;
  background:var(--lime);background-image:none;
  color:var(--ink);font-size:15px;line-height:1;
  display:grid;place-items:center;margin-left:16px;
  transition:transform .24s var(--ease);
}
.faq-accordion .accordion-button:not(.collapsed)::after{
  transform:rotate(45deg);background-image:none;
}
.faq-accordion .accordion-body{
  padding:0 0 24px;font-size:15px;line-height:1.9;color:var(--body-text);max-width:720px;
}
.faq-side{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--shadow-1);
}
.faq-side h3{font-size:18px;color:var(--ink);margin-bottom:14px;}
.faq-side ul{margin-bottom:22px;}
.faq-side li{padding:10px 0;border-bottom:1px solid var(--line);}
.faq-side li:last-child{border-bottom:0;}
.faq-side li a{font-size:14.5px;color:var(--body-text);display:flex;justify-content:space-between;gap:10px;}
.faq-side li a:hover{color:var(--ink);}
.faq-side li a span{color:var(--muted);}

/* ---------- 订阅 CTA ---------- */
.cta-block{
  background:var(--forest);border-radius:var(--r-block);
  padding:clamp(32px,5vw,64px);
  display:grid;grid-template-columns:6fr 6fr;gap:clamp(24px,4vw,56px);
  align-items:center;color:#fff;
}
.cta-block h2{font-size:clamp(24px,3vw,34px);line-height:1.25;color:#fff;margin-bottom:14px;letter-spacing:-.02em;}
.cta-block p{font-size:15px;line-height:1.85;color:rgba(255,255,255,.74);}
.sub-form{display:flex;flex-direction:column;gap:12px;}
.sub-field{
  display:flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.96);border-radius:var(--r-pill);
  padding:6px 6px 6px 20px;
}
.sub-field input{
  flex:1 1 auto;min-width:0;height:44px;border:0;background:transparent;
  font-size:15px;color:var(--ink);outline:none;
}
.sub-field input::placeholder{color:#9A9DA5;}
.sub-field .btn-lime{height:44px;padding:0 22px;font-size:14px;}
.sub-note{font-size:12.5px;color:rgba(255,255,255,.55);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--forest);color:#B9BCC4;margin-top:clamp(56px,7vw,96px);padding-top:clamp(48px,6vw,72px);}
.footer-grid{
  display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:32px;
  padding-bottom:48px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);}
.footer-brand .brand-mark::after{background:var(--lime);}
.footer-brand span{font-size:15px;font-weight:700;color:#fff;letter-spacing:-.01em;}
.footer-about p{font-size:14px;line-height:1.9;color:#B9BCC4;max-width:320px;}
.footer-col h4{font-size:13px;letter-spacing:.14em;color:#fff;margin-bottom:16px;font-weight:600;}
.footer-col a{display:block;font-size:14px;color:#B9BCC4;padding:6px 0;}
.footer-col a:hover{color:var(--lime);text-decoration:underline;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 28px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(185,188,196,.8);
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:1040;
  width:44px;height:44px;border-radius:50%;border:0;
  background:var(--ink);color:var(--lime);
  display:grid;place-items:center;font-size:16px;cursor:pointer;
  opacity:0;pointer-events:none;transform:translateY(8px);
  transition:opacity .26s var(--ease),transform .26s var(--ease),background .26s var(--ease);
}
.to-top.show{opacity:1;pointer-events:auto;transform:none;}
.to-top:hover{background:var(--ink-2);}

/* ---------- 入场动效 ---------- */
html.js .reveal{opacity:0;transform:translateY(14px);}
html.js .reveal.in{
  opacity:1;transform:none;
  transition:opacity .6s var(--ease),transform .6s var(--ease);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .nav-menu a{padding:8px 9px;font-size:13.5px;}
}
@media (max-width:991px){
  .nav-menu{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-actions .btn-lime{display:none;}
  .nav-pill{justify-content:space-between;}
  .split,.feature-grid,.proof,.faq-layout,.cta-block{grid-template-columns:1fr;}
  .feature-card.tall{min-height:340px;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .hero{min-height:auto;padding:130px 0 70px;}
  .hero::before{background:linear-gradient(180deg,rgba(21,23,28,.82) 0%,rgba(21,23,28,.72) 100%);}
}
@media (max-width:767px){
  .wrap{padding:0 16px;}
  .news-grid{grid-template-columns:1fr;}
  .hero-actions .btn-lime,.hero-actions .btn-ghost{width:100%;}
  .hero-stats{gap:22px 32px;}
  .faq-layout{gap:24px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-about p{max-width:none;}
}
@media (max-width:520px){
  .hero-title{font-size:clamp(28px,8vw,34px);}
  .brand-text{font-size:13px;}
  .feature-card.tall{min-height:280px;}
  .feature-body{padding:20px;}
  .news-body{padding:18px;}
  .cta-block{padding:28px 22px;}
  .sub-field{flex-wrap:wrap;border-radius:20px;padding:12px;}
  .sub-field .btn-lime{width:100%;}
  .to-top{right:16px;bottom:16px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
  html.js .reveal{opacity:1;transform:none;}
}

/* roulang page: category1 */
:root{
  --ink:#15171C;
  --ink-2:#23262E;
  --paper:#F6F4EF;
  --surface:#FFFFFF;
  --line:#E5E0D6;
  --muted:#62656E;
  --body:#3A3D45;
  --lime:#C8F169;
  --lime-deep:#A8D93C;
  --forest:#12332C;
  --danger:#C8452F;
  --radius-card:20px;
  --radius-block:28px;
  --radius-img:14px;
  --shadow-1:0 1px 2px rgba(21,23,28,.05);
  --shadow-2:0 18px 40px rgba(21,23,28,.10);
  --shadow-nav:0 10px 30px rgba(21,23,28,.08);
  --ease:cubic-bezier(.22,.61,.36,1);
  --bs-body-bg:#F6F4EF;
  --bs-body-color:#3A3D45;
  --bs-border-radius:20px;
  --bs-link-color:#15171C;
  --bs-link-hover-color:#15171C;
  --bs-font-sans-serif:"HarmonyOS Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--body);
  font-family:"HarmonyOS Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--ink);text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--ink)}
button{font-family:inherit}
:focus-visible{outline:3px solid rgba(200,241,105,.7);outline-offset:3px;border-radius:6px}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
h1,h2,h3,h4{color:var(--ink);margin:0;font-weight:700;letter-spacing:-.02em}
h2{font-size:clamp(26px,3.4vw,40px);line-height:1.2}
h3{font-size:21px;line-height:1.35;font-weight:600}
p{margin:0 0 1.1em}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);font-weight:600;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--lime-deep);border-radius:2px}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  padding:16px 0;
  transition:padding .26s var(--ease),background .26s var(--ease);
}
.site-header .wrap{max-width:1240px}
.nav-pill{
  display:flex;align-items:center;gap:18px;
  background:rgba(246,244,239,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(229,224,214,.9);
  border-radius:999px;
  padding:8px 10px 8px 18px;
  box-shadow:var(--shadow-1);
  transition:background .26s var(--ease),box-shadow .26s var(--ease);
}
.site-header.is-stuck{padding:10px 0}
.site-header.is-stuck .nav-pill{
  background:rgba(246,244,239,.96);
  box-shadow:var(--shadow-nav);
}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--ink);font-size:16px;letter-spacing:-.01em;white-space:nowrap}
.brand-mark{
  width:26px;height:26px;border-radius:9px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--ink) 0 52%,var(--lime) 52% 100%);
  box-shadow:inset 0 0 0 1px rgba(21,23,28,.06);
}
.brand-text{max-width:220px;overflow:hidden;text-overflow:ellipsis}
.nav-menu{display:flex;align-items:center;gap:6px;list-style:none;margin:0 auto;padding:0}
.nav-menu a{
  position:relative;display:inline-block;
  padding:8px 12px;border-radius:999px;
  font-size:14.5px;color:var(--muted);font-weight:500;
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-menu a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:5px;height:1px;
  background:var(--ink);transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.nav-menu a:hover{color:var(--ink)}
.nav-menu a:hover::after{transform:scaleX(1)}
.nav-menu a.is-active{color:var(--ink);font-weight:600}
.nav-menu a.is-active::before{
  content:"";position:absolute;left:50%;bottom:-2px;width:4px;height:4px;
  border-radius:50%;background:var(--lime-deep);transform:translateX(-50%);
}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.btn-lime{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--lime);color:var(--ink);font-weight:600;
  border:1px solid var(--lime);border-radius:999px;
  padding:13px 24px;font-size:15px;
  transition:background .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.btn-lime:hover{background:var(--lime-deep);border-color:var(--lime-deep);color:var(--ink);transform:translateY(-2px);box-shadow:0 12px 24px rgba(168,217,60,.34)}
.btn-lime:active{transform:translateY(0)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:var(--ink);font-weight:600;
  border:1px solid rgba(21,23,28,.35);border-radius:999px;
  padding:12px 24px;font-size:15px;
  transition:border-color .22s var(--ease),background .22s var(--ease),transform .22s var(--ease);
}
.btn-ghost:hover{border-color:var(--ink);background:rgba(21,23,28,.04);transform:translateY(-2px);color:var(--ink)}
.btn-arrow::after{content:"→";font-family:"Inter","Space Grotesk",system-ui,sans-serif;transition:transform .22s var(--ease)}
.btn-arrow:hover::after{transform:translateX(4px)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:50%;
  border:1px solid var(--line);background:var(--surface);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  display:block;width:16px;height:2px;background:var(--ink);border-radius:2px;transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.nav-toggle span{position:relative}
.nav-toggle span::before{content:"";position:absolute;top:-5px}
.nav-toggle span::after{content:"";position:absolute;top:5px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-5px) rotate(-45deg)}
.mobile-panel{
  display:none;margin-top:10px;
  background:var(--paper);
  border:1px solid var(--line);border-radius:24px;
  box-shadow:var(--shadow-nav);
  padding:10px;
}
.mobile-panel.is-open{display:block;animation:panelIn .26s var(--ease)}
@keyframes panelIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}
.mobile-panel a{
  display:flex;align-items:center;min-height:44px;
  padding:0 14px;border-radius:14px;font-size:15px;color:var(--ink);
}
.mobile-panel a:hover{background:rgba(21,23,28,.05)}
.mobile-panel .mobile-cta{
  margin-top:6px;justify-content:center;background:var(--lime);font-weight:600;
}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;
  min-height:clamp(220px,26vw,320px);
  margin-top:0;padding:150px 0 56px;
  display:flex;align-items:flex-end;
  background-image:linear-gradient(90deg,rgba(21,23,28,.82) 0%,rgba(21,23,28,.62) 100%),url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(255,255,255,.07) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(255,255,255,.07) 1px,transparent 1px);
  background-size:24px 24px;
  mask-image:linear-gradient(to top,rgba(0,0,0,.9),transparent 80%);
}
.page-hero .wrap{position:relative;z-index:2}
.page-hero h1{
  color:#fff;
  font-size:clamp(30px,4.2vw,50px);
  line-height:1.14;
  margin:18px 0 14px;
  max-width:16em;
}
.page-hero p{color:rgba(255,255,255,.78);max-width:640px;margin:0;font-size:16px}
.tag-pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;
  font-size:12.5px;letter-spacing:.06em;font-weight:600;
  background:rgba(200,241,105,.16);
  border:1px solid rgba(200,241,105,.5);
  color:var(--lime);
}
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);
  padding:22px 0 0;
}
.crumbs a{color:var(--muted);border-bottom:1px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease)}
.crumbs a:hover{color:var(--ink);border-color:var(--ink)}
.crumbs .sep{color:#B6B2A8}
.crumbs .current{color:var(--ink);font-weight:600}

/* ---------- sections ---------- */
.section{padding:clamp(56px,7vw,96px) 0}
.section-head{max-width:720px;margin-bottom:clamp(32px,4vw,52px)}
.section-head h2{margin:14px 0 14px}
.section-head p{color:var(--muted);margin:0}

/* split block */
.split{
  display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:center;
}
.split-copy h2{margin:14px 0 18px}
.split-copy p{color:var(--body)}
.mini-list{list-style:none;padding:0;margin:22px 0 28px}
.mini-list li{
  position:relative;padding-left:24px;margin-bottom:10px;font-size:15.5px;color:var(--body);
}
.mini-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;border-radius:2px;background:var(--lime-deep);
}
.figure-card{
  position:relative;border-radius:var(--radius-block);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-1);background:var(--surface);
}
.figure-card img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/11;transition:transform .5s var(--ease)}
.figure-card:hover img{transform:scale(1.03)}
.figure-card figcaption{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:16px 22px;font-size:13.5px;color:var(--muted);
  border-top:1px solid var(--line);background:var(--surface);
}
.figure-card .cap-chip{
  font-size:12px;padding:4px 10px;border-radius:999px;
  background:rgba(21,23,28,.05);color:var(--ink-2);font-weight:600;white-space:nowrap;
}

/* steps */
.steps-wrap{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-block);padding:clamp(26px,3.4vw,48px)}
.steps{list-style:none;margin:0;padding:0}
.steps li{
  position:relative;
  display:grid;grid-template-columns:88px 1fr;gap:20px;
  padding:26px 0;
  border-bottom:1px solid var(--line);
}
.steps li:last-of-type{border-bottom:0;padding-bottom:8px}
.steps li::before{
  content:"";position:absolute;left:43px;top:0;bottom:0;width:1px;background:var(--line);
}
.steps li:first-child::before{top:26px}
.steps li:last-of-type::before{bottom:calc(100% - 26px)}
.step-num{
  position:relative;z-index:2;
  width:64px;height:64px;border-radius:50%;
  background:var(--paper);border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  font-family:"Inter","Space Grotesk",system-ui,sans-serif;
  font-size:19px;font-weight:600;color:var(--ink);letter-spacing:-.02em;
}
.steps li:hover .step-num{background:var(--lime);border-color:var(--lime)}
.step-body h3{margin-bottom:8px;font-size:19px}
.step-body p{margin:0;color:var(--muted);font-size:15.5px}
.steps-foot{display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:26px;padding-top:24px;border-top:1px solid var(--line)}
.steps-foot .note{font-size:14px;color:var(--muted);margin:0}

/* scene cards */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scene-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-1);
  transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#D9D3C6}
.scene-card .badge-soft{
  display:inline-block;font-size:12px;letter-spacing:.06em;font-weight:600;
  padding:6px 12px;border-radius:999px;background:var(--paper);border:1px solid var(--line);color:var(--ink-2);
  margin-bottom:16px;
}
.scene-card h3{font-size:19px;margin-bottom:10px}
.scene-card p{margin:0;color:var(--muted);font-size:15px}

/* FAQ */
.faq-panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-block);
  padding:clamp(24px,3vw,40px);
}
.accordion-item{background:transparent;border:0;border-top:1px solid var(--line)}
.accordion-item:first-of-type{border-top:0}
.accordion-button{
  display:flex;align-items:center;gap:16px;
  background:transparent;color:var(--ink);font-weight:600;font-size:17px;line-height:1.5;
  padding:22px 0;border:0;border-radius:0;box-shadow:none;
}
.accordion-button:not(.collapsed){background:transparent;color:var(--ink);box-shadow:none}
.accordion-button:focus{box-shadow:none;outline:none}
.accordion-button::after{display:none}
.accordion-button .plus{
  flex:0 0 auto;width:24px;height:24px;border-radius:50%;
  background:var(--lime);position:relative;
  transition:transform .24s var(--ease);
}
.accordion-button .plus::before,
.accordion-button .plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--ink);border-radius:2px;
  transform:translate(-50%,-50%);
}
.accordion-button .plus::before{width:10px;height:2px}
.accordion-button .plus::after{width:2px;height:10px}
.accordion-button:not(.collapsed) .plus{transform:rotate(45deg)}
.accordion-body{padding:0 0 24px 40px;color:var(--muted);font-size:15.5px;line-height:1.85}
.accordion-body p:last-child{margin-bottom:0}

/* CTA */
.cta-block{
  background:var(--forest);border-radius:28px;
  padding:clamp(32px,4.6vw,64px);
  display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;
  color:#fff;
}
.cta-block h2{color:#fff;margin:14px 0 14px}
.cta-block .eyebrow{color:rgba(255,255,255,.6)}
.cta-block p{color:rgba(255,255,255,.72);margin:0;max-width:420px;font-size:15.5px}
.cta-form{display:flex;flex-direction:column;gap:14px}
.input-pill{
  display:flex;align-items:center;gap:10px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.22);
  border-radius:999px;padding:6px 6px 6px 20px;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.input-pill:focus-within{border-color:rgba(200,241,105,.9);box-shadow:0 0 0 4px rgba(200,241,105,.28)}
.input-pill input{
  flex:1;min-width:0;background:transparent;border:0;outline:none;
  color:#fff;font-size:15px;height:44px;
}
.input-pill input::placeholder{color:rgba(255,255,255,.45)}
.input-pill button{border:0;cursor:pointer}
.form-hint{font-size:13px;color:rgba(255,255,255,.5);margin:0}
.cta-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.cta-tags span{
  font-size:12.5px;padding:6px 12px;border-radius:999px;
  border:1px solid rgba(255,255,255,.22);color:rgba(255,255,255,.72);
}

/* footer */
.site-footer{background:var(--ink);color:#B9BCC4;padding:clamp(48px,6vw,80px) 0 28px;margin-top:clamp(56px,7vw,96px)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:16px;margin-bottom:16px}
.footer-about p{font-size:14px;line-height:1.8;color:#B9BCC4;max-width:340px;margin:0}
.footer-col h4{color:#fff;font-size:14px;letter-spacing:.08em;margin-bottom:16px;font-weight:600}
.footer-col a{display:block;color:#B9BCC4;font-size:14px;padding:6px 0;transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--lime);text-decoration:underline;text-underline-offset:4px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);margin-top:44px;padding-top:22px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:#8C8F98;
}

/* back to top */
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  background:var(--ink);color:var(--lime);border:0;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;line-height:1;opacity:0;pointer-events:none;
  transform:translateY(10px);
  transition:opacity .26s var(--ease),transform .26s var(--ease),background .2s var(--ease);
  box-shadow:var(--shadow-2);z-index:900;
}
.to-top.is-on{opacity:1;pointer-events:auto;transform:translateY(0)}
.to-top:hover{background:var(--ink-2)}

/* reveal */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

@media (max-width:1199px){
  .split{grid-template-columns:1fr;gap:36px}
  .cta-block{grid-template-columns:1fr;gap:28px}
}
@media (max-width:991px){
  .nav-menu{display:none}
  .nav-actions .btn-lime{display:none}
  .nav-toggle{display:flex}
  .nav-pill{padding:8px 8px 8px 16px}
  .scene-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .page-hero{padding-top:130px}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.8}
  .wrap{padding:0 16px}
  .scene-grid{grid-template-columns:1fr}
  .steps li{grid-template-columns:64px 1fr;gap:14px}
  .steps li::before{left:31px}
  .step-num{width:52px;height:52px;font-size:17px}
  .accordion-body{padding-left:0}
  .page-hero{min-height:auto;padding:120px 0 44px}
  .btn-lime,.btn-ghost{width:100%}
  .steps-foot{flex-direction:column;align-items:stretch}
  .brand-text{max-width:150px;font-size:15px}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
  .input-pill{flex-direction:column;align-items:stretch;border-radius:20px;padding:8px}
  .input-pill input{padding:0 12px}
  .input-pill button{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --ink:#15171C;
  --ink-2:#23262E;
  --paper:#F6F4EF;
  --surface:#FFFFFF;
  --line:#E5E0D6;
  --muted:#62656E;
  --text:#3A3D45;
  --lime:#C8F169;
  --lime-deep:#A8D93C;
  --forest:#12332C;
  --danger:#C8452F;
  --r-card:20px;
  --r-block:28px;
  --r-img:14px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(21,23,28,.05);
  --sh-2:0 18px 40px rgba(21,23,28,.10);
  --sh-nav:0 10px 30px rgba(21,23,28,.08);
  --ease:cubic-bezier(.22,.61,.36,1);
  --bs-body-bg:#F6F4EF;
  --bs-body-color:#3A3D45;
  --bs-link-color:#15171C;
  --bs-link-hover-color:#15171C;
  --bs-border-color:#E5E0D6;
  --bs-border-radius:14px;
  --bs-font-sans-serif:"HarmonyOS Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:"HarmonyOS Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .24s var(--ease),opacity .24s var(--ease);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.02em;line-height:1.25;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--ink);outline-offset:3px;border-radius:6px;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.num{font-family:"Inter","Space Grotesk","HarmonyOS Sans SC",system-ui,sans-serif;letter-spacing:-.02em;font-variant-numeric:tabular-nums;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  padding:14px 0 6px;
  background:linear-gradient(to bottom,rgba(246,244,239,.94),rgba(246,244,239,0));
  transition:background .26s var(--ease);
}
.site-header.is-scrolled{background:rgba(246,244,239,.96);}
.nav-pill{
  display:flex;
  align-items:center;
  gap:18px;
  padding:8px 10px 8px 16px;
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  background:rgba(246,244,239,.72);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  transition:background .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
}
.site-header.is-scrolled .nav-pill{
  background:rgba(250,249,245,.96);
  box-shadow:var(--sh-nav);
  border-color:#DED8CB;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{width:22px;height:22px;border-radius:7px;background:var(--ink);position:relative;flex:0 0 22px;}
.brand-mark::after{content:"";position:absolute;right:4px;bottom:4px;width:8px;height:8px;border-radius:2px;background:var(--lime);}
.brand-text{font-size:15px;font-weight:700;color:var(--ink);letter-spacing:-.01em;white-space:nowrap;}
.nav-menu{display:flex;align-items:center;gap:2px;margin-left:auto;}
.nav-menu a{
  position:relative;
  display:inline-block;
  padding:9px 11px;
  font-size:14.5px;
  color:var(--ink);
  border-radius:var(--r-pill);
  white-space:nowrap;
}
.nav-menu a::after{
  content:"";
  position:absolute;
  left:11px;
  right:11px;
  bottom:5px;
  height:1px;
  background:var(--ink);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s var(--ease);
}
.nav-menu a:hover::after{transform:scaleX(1);}
.nav-menu a.is-active::before{
  content:"";
  position:absolute;
  left:50%;
  bottom:1px;
  width:4px;
  height:4px;
  border-radius:50%;
  background:var(--lime-deep);
  transform:translateX(-50%);
}
.nav-actions{display:flex;align-items:center;gap:8px;margin-left:8px;}
.btn-lime{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  background:var(--lime);
  color:var(--ink);
  border:1px solid transparent;
  border-radius:var(--r-pill);
  padding:11px 20px;
  font-size:14.5px;
  font-weight:600;
  transition:background .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-lime:hover{background:var(--lime-deep);color:var(--ink);transform:translateY(-1px);box-shadow:0 10px 24px rgba(168,217,60,.35);}
.btn-lime:active{transform:translateY(0);}
.btn-sm{padding:8px 14px;font-size:13.5px;}
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:44px;height:44px;
  border-radius:50%;
  border:1px solid var(--line);
  background:var(--surface);
  cursor:pointer;
  transition:background .22s var(--ease),border-color .22s var(--ease);
}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:background .2s var(--ease);}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
  transition:transform .24s var(--ease);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle.is-open span{background:transparent;}
.nav-toggle.is-open span::before{transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-open span::after{transform:translateY(-6px) rotate(-45deg);}
.mobile-panel{
  display:none;
  margin-top:10px;
  padding:8px;
  background:rgba(250,249,245,.98);
  border:1px solid var(--line);
  border-radius:24px;
  box-shadow:var(--sh-2);
}
.mobile-panel.is-open{display:block;}
.mobile-panel a{
  display:flex;
  align-items:center;
  height:44px;
  padding:0 16px;
  font-size:15px;
  color:var(--ink);
  border-radius:16px;
  transition:background .2s var(--ease);
}
.mobile-panel a:hover{background:rgba(200,241,105,.28);}
.mobile-panel .mobile-cta{margin-top:6px;justify-content:center;background:var(--lime);font-weight:600;}

/* ---------- 面包屑 ---------- */
.article-main{padding:24px 0 clamp(56px,7vw,96px);}
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  padding:6px 0 22px;
}
.crumbs a{color:var(--muted);}
.crumbs a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--lime-deep);}
.crumbs .sep{color:#B9B3A6;}
.crumbs .current{color:var(--ink);}

/* ---------- 文章布局 ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,720px) 260px;
  gap:56px;
  justify-content:center;
  align-items:start;
}
.article-col{min-width:0;}
.article-head{padding-bottom:26px;}
.tag-pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 12px;
  font-size:12.5px;
  letter-spacing:.06em;
  color:var(--ink);
  background:rgba(200,241,105,.30);
  border:1px solid rgba(168,217,60,.55);
  border-radius:var(--r-pill);
}
.article-title{
  margin:18px 0 0;
  font-size:clamp(28px,3.6vw,44px);
  line-height:1.22;
  letter-spacing:-.02em;
  color:var(--ink);
  word-break:break-word;
}
.meta-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 16px;
  margin-top:18px;
  font-size:13px;
  color:var(--muted);
  font-family:"Inter","Space Grotesk","HarmonyOS Sans SC",system-ui,sans-serif;
  font-variant-numeric:tabular-nums;
}
.meta-row .dot{width:3px;height:3px;border-radius:50%;background:#C3BDB0;}

/* ---------- 正文 ---------- */
.article-body{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:clamp(24px,3.4vw,48px);
  font-size:16.5px;
  line-height:1.9;
  color:var(--text);
  overflow-wrap:break-word;
}
.article-body p{margin:0 0 1.4em;}
.article-body p:last-child{margin-bottom:0;}
.article-body h2{
  font-size:clamp(22px,2.4vw,26px);
  margin:2em 0 .8em;
  padding-top:.2em;
}
.article-body h2:first-child{margin-top:0;}
.article-body h3{font-size:20px;margin:1.6em 0 .6em;}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding:0;}
.article-body ul li{position:relative;padding-left:20px;margin:0 0 .6em;}
.article-body ul li::before{
  content:"";
  position:absolute;
  left:0;
  top:.72em;
  width:8px;height:8px;
  background:var(--lime);
  border-radius:2px;
}
.article-body ol{list-style:none;counter-reset:art;}
.article-body ol li{position:relative;padding-left:26px;margin:0 0 .6em;counter-increment:art;}
.article-body ol li::before{
  content:counter(art);
  position:absolute;left:0;top:.28em;
  width:18px;height:18px;
  display:flex;align-items:center;justify-content:center;
  font-size:11.5px;
  font-weight:700;
  color:var(--ink);
  background:rgba(200,241,105,.55);
  border-radius:6px;
}
.article-body blockquote{
  margin:1.6em 0;
  padding:16px 20px;
  background:var(--paper);
  border-left:3px solid var(--lime);
  border-radius:0 12px 12px 0;
  color:#2C2F36;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-img);margin:1.6em auto;height:auto;}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px;}
.article-body a{color:var(--ink);text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--lime-deep);}
.article-body a:hover{text-decoration-color:var(--ink);}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;}
.article-body th,.article-body td{border-bottom:1px solid var(--line);padding:10px 12px;text-align:left;}
.article-body th{color:var(--ink);font-weight:600;}
.empty-box{
  border:1px dashed var(--line);
  border-radius:var(--r-card);
  padding:56px 28px;
  text-align:center;
  background:var(--surface);
}
.empty-box p{margin:0 0 16px;font-size:15px;color:var(--muted);}
.empty-box a{
  display:inline-flex;
  align-items:center;
  height:44px;
  padding:0 22px;
  border:1px solid var(--ink);
  border-radius:var(--r-pill);
  font-size:14px;
  color:var(--ink);
  transition:background .22s var(--ease),color .22s var(--ease);
}
.empty-box a:hover{background:var(--ink);color:#fff;}

/* ---------- 标签与返回 ---------- */
.tags-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.tag-chip{
  display:inline-flex;
  align-items:center;
  padding:6px 14px;
  font-size:12.5px;
  letter-spacing:.04em;
  color:var(--muted);
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  transition:border-color .22s var(--ease),color .22s var(--ease),background .22s var(--ease);
}
.tag-chip:hover{color:var(--ink);border-color:var(--ink);background:rgba(200,241,105,.22);}
.back-row{margin-top:26px;}
.btn-outline{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:46px;
  padding:0 24px;
  border:1px solid var(--ink);
  border-radius:var(--r-pill);
  font-size:14.5px;
  font-weight:600;
  color:var(--ink);
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.btn-outline:hover{background:var(--ink);color:#fff;transform:translateY(-1px);}

/* ---------- 侧栏 ---------- */
.article-side{position:sticky;top:96px;display:grid;gap:18px;}
.side-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px;
  box-shadow:var(--sh-1);
}
.side-title{font-size:15px;margin-bottom:12px;}
.side-list li + li{border-top:1px solid var(--line);}
.side-list a{display:block;padding:10px 0;font-size:14px;color:var(--muted);}
.side-list a:hover{color:var(--ink);}
.side-dark{background:var(--forest);border-color:var(--forest);color:#D5E2DC;}
.side-dark p{font-size:13.5px;line-height:1.75;margin:0 0 16px;color:#CBDAD3;}
.btn-line-light{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:100%;
  height:42px;
  border:1px solid rgba(255,255,255,.35);
  border-radius:var(--r-pill);
  font-size:13.5px;
  color:#fff;
  transition:background .22s var(--ease),border-color .22s var(--ease);
}
.btn-line-light:hover{background:rgba(200,241,105,.18);border-color:var(--lime);color:#fff;}

/* ---------- 相关推荐 ---------- */
.related{margin-top:clamp(48px,6vw,80px);}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px;}
.sec-head h2{font-size:clamp(22px,2.6vw,30px);}
.sec-head p{margin:6px 0 0;font-size:14px;color:var(--muted);}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.rel-card{
  display:flex;
  flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#DBD4C5;}
.rel-thumb{position:relative;overflow:hidden;background:var(--paper);}
.rel-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s var(--ease);}
.rel-card:hover .rel-thumb img{transform:scale(1.04);}
.rel-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rel-body h3{font-size:17px;line-height:1.45;}
.rel-body p{margin:0;font-size:13.5px;color:var(--muted);line-height:1.7;}
.rel-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:8px;font-size:12.5px;color:#8C8F98;}
.rel-foot .arrow{color:var(--ink);transition:transform .26s var(--ease);}
.rel-card:hover .rel-foot .arrow{transform:translateX(4px);}

/* ---------- FAQ ---------- */
.faq-sec{margin-top:clamp(48px,6vw,80px);display:grid;grid-template-columns:minmax(0,360px) minmax(0,1fr);gap:48px;align-items:start;}
.faq-intro h2{font-size:clamp(22px,2.6vw,30px);}
.faq-intro p{margin:14px 0 0;font-size:14.5px;color:var(--muted);line-height:1.8;}
.faq-acc .accordion-item{background:transparent;border:0;border-top:1px solid var(--line);}
.faq-acc .accordion-item:last-child{border-bottom:1px solid var(--line);}
.faq-acc .accordion-button{
  background:transparent;
  box-shadow:none;
  border:0;
  padding:20px 0;
  font-size:16.5px;
  font-weight:600;
  color:var(--ink);
  display:flex;
  align-items:center;
  gap:16px;
}
.faq-acc .accordion-button:not(.collapsed){background:transparent;color:var(--ink);box-shadow:none;}
.faq-acc .accordion-button::after{display:none;}
.faq-acc .accordion-button:focus{box-shadow:none;border:0;}
.faq-acc .accordion-body{padding:0 0 22px;font-size:15px;color:var(--text);line-height:1.85;}
.plus{
  position:relative;
  flex:0 0 24px;
  width:24px;height:24px;
  margin-left:auto;
  border-radius:50%;
  background:var(--lime);
  transition:transform .24s var(--ease);
}
.plus::before,.plus::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:var(--ink);
  border-radius:1px;
  transform:translate(-50%,-50%);
}
.plus::before{width:10px;height:2px;}
.plus::after{width:2px;height:10px;}
.faq-acc .accordion-button:not(.collapsed) .plus{transform:rotate(45deg);}

/* ---------- CTA ---------- */
.cta-block{
  margin-top:clamp(48px,6vw,88px);
  background:var(--forest);
  border-radius:var(--r-block);
  padding:clamp(28px,4vw,52px);
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  align-items:center;
  gap:28px;
}
.cta-block h2{color:#fff;font-size:clamp(22px,2.6vw,32px);}
.cta-block p{margin:12px 0 0;font-size:14.5px;color:#C6D6CF;line-height:1.8;max-width:52ch;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--forest);color:#B9BCC4;padding:clamp(48px,6vw,72px) 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:15px;font-weight:700;margin-bottom:14px;}
.footer-brand .brand-mark{background:#fff;}
.footer-brand .brand-mark::after{background:var(--lime);}
.footer-about p{margin:0;font-size:13.5px;line-height:1.85;color:#A9B5AF;max-width:34ch;}
.footer-col h4{font-size:13px;letter-spacing:.08em;color:#8FA39B;margin-bottom:14px;text-transform:uppercase;}
.footer-col a{display:block;padding:6px 0;font-size:14px;color:#B9BCC4;}
.footer-col a:hover{color:var(--lime);text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  margin-top:40px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.14);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
  font-size:12.5px;
  color:#8C9C96;
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;
  right:24px;
  bottom:24px;
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  border:0;
  border-radius:50%;
  background:var(--ink);
  color:var(--lime);
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity .26s var(--ease),transform .26s var(--ease),visibility .26s var(--ease),background .22s var(--ease);
  box-shadow:var(--sh-2);
  z-index:900;
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--ink-2);}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1399px){
  .article-layout{gap:44px;}
}
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,760px);justify-content:center;}
  .article-side{display:none;}
  .faq-sec{grid-template-columns:1fr;gap:26px;}
}
@media (max-width:991px){
  .nav-menu{display:none;}
  .nav-toggle{display:flex;}
  .nav-actions .btn-lime{display:none;}
  .nav-pill{padding:8px 8px 8px 14px;}
  .rel-grid{grid-template-columns:repeat(2,1fr);}
  .cta-block{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .wrap{padding:0 20px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .article-main{padding-top:12px;}
  .article-body{font-size:16px;line-height:1.8;padding:24px 20px;}
  .rel-grid{grid-template-columns:1fr;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:8px;}
  .meta-row{font-size:12.5px;gap:8px 12px;}
  .cta-block{padding:26px 22px;}
  .cta-block .btn-lime{width:100%;}
  .btn-outline{width:100%;justify-content:center;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;}
  .to-top{right:16px;bottom:16px;}
  .wrap{padding:0 16px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --ink:#15171C;
  --ink-2:#23262E;
  --paper:#F6F4EF;
  --surface:#FFFFFF;
  --line:#E5E0D6;
  --muted:#62656E;
  --body:#3A3D45;
  --lime:#C8F169;
  --lime-deep:#A8D93C;
  --forest:#12332C;
  --danger:#C8452F;
  --r-card:20px;
  --r-block:28px;
  --r-img:14px;
  --sh-1:0 1px 2px rgba(21,23,28,.05);
  --sh-2:0 18px 40px rgba(21,23,28,.10);
  --sh-nav:0 10px 30px rgba(21,23,28,.08);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:"HarmonyOS Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Inter","Space Grotesk",ui-monospace,monospace;
  --bs-body-bg:#F6F4EF;
  --bs-body-color:#3A3D45;
  --bs-border-color:#E5E0D6;
  --bs-link-color:#15171C;
  --bs-link-hover-color:#15171C;
  --bs-border-radius:20px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.85;
  color:var(--body);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--ink);text-decoration:none;transition:color 240ms var(--ease)}
a:hover{color:var(--ink-2)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.02em}
h1{font-size:clamp(30px,4.2vw,50px);line-height:1.16}
h2{font-size:clamp(26px,3.4vw,40px);line-height:1.2}
h3{font-size:clamp(19px,2vw,23px);line-height:1.35;font-weight:600}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--ink);outline-offset:3px;border-radius:6px}

.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:clamp(56px,7vw,96px) 0}
.section--tight{padding:clamp(40px,5vw,64px) 0}
.sec-head{max-width:720px;margin-bottom:clamp(28px,4vw,48px)}
.sec-head .eyebrow{display:inline-block;margin-bottom:14px}
.sec-head h2{margin-bottom:14px}
.sec-head p{color:var(--muted);font-size:16px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.08em;font-weight:600;
  color:var(--ink);background:rgba(200,241,105,.28);
  border:1px solid rgba(168,217,60,.55);
  padding:6px 12px;border-radius:999px;
}
.num{font-family:var(--font-num);letter-spacing:-.02em;font-feature-settings:"tnum" 1}

/* ---------- header / nav ---------- */
.site-header{position:sticky;top:0;z-index:60;padding:14px 0 0}
.nav-pill{
  display:flex;align-items:center;gap:18px;
  padding:8px 10px;border-radius:999px;
  background:rgba(246,244,239,.72);
  border:1px solid rgba(229,224,214,.9);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  transition:background 260ms var(--ease),box-shadow 260ms var(--ease),border-color 260ms var(--ease);
}
.site-header.is-scrolled .nav-pill{
  background:rgba(246,244,239,.96);
  box-shadow:var(--sh-nav);
  border-color:var(--line);
}
.brand{display:flex;align-items:center;gap:10px;padding-left:8px;flex:0 0 auto}
.brand-mark{
  width:26px;height:26px;border-radius:9px;flex:0 0 auto;
  background:var(--ink);position:relative;overflow:hidden;
}
.brand-mark::after{
  content:"";position:absolute;left:6px;top:6px;right:6px;bottom:6px;
  border-radius:3px;background:var(--lime);
  clip-path:polygon(0 62%,30% 62%,42% 18%,60% 82%,74% 46%,100% 46%,100% 100%,0 100%);
}
.brand-text{font-weight:700;font-size:15.5px;color:var(--ink);letter-spacing:-.01em;white-space:nowrap}
.nav-menu{display:flex;align-items:center;gap:2px;margin:0 auto;padding:0}
.nav-menu li{list-style:none}
.nav-menu a{
  position:relative;display:inline-block;
  padding:9px 13px;border-radius:999px;
  font-size:14.5px;color:var(--ink-2);white-space:nowrap;
  transition:background 220ms var(--ease),color 220ms var(--ease);
}
.nav-menu a::after{
  content:"";position:absolute;left:13px;right:13px;bottom:5px;height:1px;
  background:var(--ink);transform:scaleX(0);transform-origin:left;
  transition:transform 240ms var(--ease);
}
.nav-menu a:hover{color:var(--ink);background:rgba(21,23,28,.045)}
.nav-menu a:hover::after{transform:scaleX(1)}
.nav-menu a.is-active{color:var(--ink);font-weight:600;background:rgba(21,23,28,.05)}
.nav-menu a.is-active::before{
  content:"";position:absolute;left:50%;bottom:-1px;width:4px;height:4px;
  margin-left:-2px;border-radius:50%;background:var(--lime-deep);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.btn-lime{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--lime);color:var(--ink);
  border:1px solid var(--lime);border-radius:999px;
  font-weight:600;font-size:15px;padding:12px 24px;
  transition:transform 220ms var(--ease),background 220ms var(--ease),box-shadow 220ms var(--ease);
  box-shadow:var(--sh-1);
}
.btn-lime:hover{background:var(--lime-deep);border-color:var(--lime-deep);color:var(--ink);transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:var(--ink);
  border:1px solid var(--ink);border-radius:999px;
  font-weight:600;font-size:15px;padding:11px 24px;
  transition:background 220ms var(--ease),color 220ms var(--ease),transform 220ms var(--ease);
}
.btn-ghost:hover{background:var(--ink);color:var(--paper);transform:translateY(-2px)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:50%;
  border:1px solid var(--line);background:var(--surface);
  align-items:center;justify-content:center;cursor:pointer;
  transition:background 220ms var(--ease),border-color 220ms var(--ease);
}
.nav-toggle span{
  display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);position:relative;
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--ink);
  transition:transform 240ms var(--ease),top 240ms var(--ease);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg)}
.mobile-panel{
  display:none;margin:10px 0 0;
  background:var(--paper);border:1px solid var(--line);
  border-radius:24px;padding:10px;box-shadow:var(--sh-nav);
}
.mobile-panel.is-open{display:block;animation:panelIn 260ms var(--ease)}
@keyframes panelIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}
.mobile-panel a{
  display:flex;align-items:center;min-height:44px;padding:0 16px;
  border-radius:14px;font-size:15px;color:var(--ink-2);
}
.mobile-panel a:hover{background:rgba(21,23,28,.05);color:var(--ink)}
.mobile-panel a.is-active{background:rgba(200,241,105,.32);font-weight:600;color:var(--ink)}
.mobile-panel .mobile-cta{
  justify-content:center;margin-top:6px;background:var(--lime);color:var(--ink);
  font-weight:600;border-radius:999px;
}

/* ---------- mini hero ---------- */
.mini-hero{position:relative;margin-top:14px;overflow:hidden;border-radius:var(--r-block)}
.mini-hero__bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.mini-hero__mask{
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(21,23,28,.86) 0%,rgba(21,23,28,.62) 62%,rgba(21,23,28,.5) 100%);
}
.mini-hero__grid{
  position:absolute;inset:0;opacity:.14;
  background-image:linear-gradient(rgba(255,255,255,.5) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:24px 24px;
}
.mini-hero__inner{
  position:relative;z-index:2;
  min-height:clamp(220px,26vw,320px);
  display:flex;flex-direction:column;justify-content:center;
  padding:clamp(28px,4vw,48px);
}
.mini-hero__inner h1{color:#fff;margin:16px 0 14px;max-width:16em}
.mini-hero__inner h1 mark{
  background:transparent;color:#fff;padding:0 2px;
  box-shadow:inset 0 -8px 0 rgba(200,241,105,.55);
}
.mini-hero__inner p{color:rgba(255,255,255,.82);max-width:44em;font-size:16.5px}
.mini-hero .eyebrow{background:rgba(200,241,105,.92);border-color:transparent;color:var(--ink)}
.crumbs{font-size:13px;color:var(--muted);padding:18px 0 0}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:3px}
.crumbs span.sep{padding:0 8px;color:#B7B2A6}
.crumbs .cur{color:var(--ink);font-weight:600}

/* ---------- timeline ---------- */
.timeline-wrap{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-block);padding:clamp(24px,3.4vw,44px);box-shadow:var(--sh-1)}
.timeline{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.timeline::before{
  content:"";position:absolute;left:0;right:0;top:26px;height:1px;background:var(--line);
}
.t-node{position:relative;padding-top:64px}
.t-node__dot{
  position:absolute;top:12px;left:0;
  width:30px;height:30px;border-radius:50%;
  background:var(--paper);border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-size:12.5px;font-weight:600;color:var(--ink);
  transition:background 260ms var(--ease),border-color 260ms var(--ease),transform 260ms var(--ease);
}
.t-node:first-child .t-node__dot{background:var(--lime);border-color:var(--lime-deep)}
.t-node:hover .t-node__dot{transform:translateY(-2px);background:var(--lime);border-color:var(--lime-deep)}
.t-node h3{font-size:19px;margin-bottom:8px}
.t-node p{font-size:14.5px;color:var(--muted);line-height:1.75}
.t-node .t-meta{
  display:inline-block;margin-top:12px;font-size:12.5px;letter-spacing:.06em;
  color:var(--ink);background:rgba(200,241,105,.34);
  border-radius:999px;padding:4px 10px;
}

/* ---------- two column ---------- */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:stretch}
.panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:clamp(22px,3vw,32px);box-shadow:var(--sh-1);
  transition:box-shadow 260ms var(--ease),transform 260ms var(--ease);
}
.panel:hover{box-shadow:var(--sh-2);transform:translateY(-3px)}
.panel--media{padding:0;overflow:hidden;display:flex;flex-direction:column}
.panel--media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-card) var(--r-card) 0 0}
.panel--media .panel-body{padding:clamp(20px,2.6vw,28px)}
.panel h3{margin-bottom:12px}
.panel .lead{color:var(--muted);font-size:15px;margin-bottom:18px}
.check-list li{
  position:relative;padding:12px 0 12px 26px;
  border-bottom:1px solid var(--line);font-size:15px;color:var(--body);
}
.check-list li:last-child{border-bottom:0;padding-bottom:0}
.check-list li::before{
  content:"";position:absolute;left:0;top:19px;
  width:8px;height:8px;border-radius:2px;background:var(--lime-deep);
}
.check-list li strong{color:var(--ink);font-weight:600}

/* ---------- note bar ---------- */
.note-bar{
  display:flex;gap:16px;align-items:flex-start;
  background:rgba(200,241,105,.20);
  border:1px solid rgba(168,217,60,.5);
  border-radius:var(--r-card);
  padding:20px 24px;margin-top:24px;
}
.note-bar .note-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  background:var(--ink);color:var(--lime);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-size:14px;font-weight:700;
}
.note-bar p{font-size:15px;color:var(--ink-2)}

/* ---------- faq ---------- */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-btn{
  width:100%;display:flex;align-items:center;gap:16px;
  padding:22px 0;background:transparent;border:0;text-align:left;
  font-size:17px;font-weight:600;color:var(--ink);cursor:pointer;
  transition:color 220ms var(--ease);
}
.faq-btn:hover{color:var(--ink-2)}
.faq-btn .pm{
  flex:0 0 auto;width:24px;height:24px;border-radius:50%;
  background:var(--lime);position:relative;
  transition:transform 240ms var(--ease),background 240ms var(--ease);
}
.faq-btn .pm::before,.faq-btn .pm::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--ink);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-btn .pm::before{width:11px;height:2px}
.faq-btn .pm::after{width:2px;height:11px}
.faq-btn[aria-expanded="true"] .pm{transform:rotate(45deg);background:var(--lime-deep)}
.faq-body{padding:0 0 22px 40px;font-size:15.5px;color:var(--muted);line-height:1.85;max-width:62em}

/* ---------- cta ---------- */
.cta-block{
  background:var(--forest);border-radius:var(--r-block);
  padding:clamp(30px,4.6vw,64px);
  display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(24px,3.6vw,48px);
  align-items:center;color:#fff;
}
.cta-block h2{color:#fff;margin-bottom:14px}
.cta-block p{color:rgba(255,255,255,.76);font-size:15.5px;max-width:34em}
.cta-form{display:flex;flex-direction:column;gap:12px}
.input-pill{
  display:flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.22);
  border-radius:999px;padding:6px 6px 6px 20px;
  transition:border-color 220ms var(--ease),background 220ms var(--ease),box-shadow 220ms var(--ease);
}
.input-pill:focus-within{border-color:var(--lime);background:rgba(255,255,255,.14);box-shadow:0 0 0 4px rgba(200,241,105,.24)}
.input-pill input{
  flex:1 1 auto;background:transparent;border:0;outline:none;
  color:#fff;font-size:15px;height:40px;min-width:0;
}
.input-pill input::placeholder{color:rgba(255,255,255,.55)}
.input-pill .btn-lime{flex:0 0 auto}
.form-hint{font-size:13px;color:rgba(255,255,255,.58)}
.form-msg{font-size:13.5px;color:var(--lime);display:none}
.form-msg.show{display:block}

/* ---------- back to top ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  background:var(--ink);color:var(--lime);border:0;
  display:flex;align-items:center;justify-content:center;
  opacity:0;pointer-events:none;transform:translateY(10px);
  transition:opacity 260ms var(--ease),transform 260ms var(--ease),background 220ms var(--ease);
  z-index:70;cursor:pointer;box-shadow:var(--sh-2);
}
.to-top.show{opacity:1;pointer-events:auto;transform:translateY(0)}
.to-top:hover{background:var(--ink-2)}
.to-top svg{width:18px;height:18px}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:#B9BCC4;margin-top:clamp(56px,7vw,96px);padding:clamp(40px,5vw,64px) 0 24px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:15.5px;margin-bottom:14px}
.footer-brand .brand-mark{background:#fff}
.footer-about p{font-size:14px;line-height:1.8;color:#9EA2AC;max-width:26em}
.footer-col h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:14px;letter-spacing:.04em}
.footer-col a{display:block;font-size:14px;color:#B9BCC4;padding:5px 0}
.footer-col a:hover{color:var(--lime);text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8E929C;
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.in{opacity:1;transform:translateY(0)}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

@media (max-width:1199.98px){
  .nav-menu a{padding:9px 10px;font-size:14px}
  .brand-text{font-size:14.5px}
}
@media (max-width:991.98px){
  .nav-menu{display:none}
  .nav-actions .btn-lime{display:none}
  .nav-toggle{display:flex}
  .nav-pill{justify-content:space-between}
  .timeline{grid-template-columns:1fr 1fr;gap:20px}
  .timeline::before{display:none}
  .t-node{padding-top:0;padding-left:48px}
  .t-node__dot{top:2px}
  .two-col{grid-template-columns:1fr}
  .cta-block{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767.98px){
  .wrap{padding:0 16px}
  .mini-hero{margin-top:10px;border-radius:22px}
  .mini-hero__mask{background:linear-gradient(180deg,rgba(21,23,28,.78) 0%,rgba(21,23,28,.72) 100%)}
  .timeline{grid-template-columns:1fr}
  .t-node{padding-left:44px}
  .cta-block{border-radius:22px}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-bottom{flex-direction:column;gap:8px}
  .faq-btn{font-size:16px}
  .faq-body{padding-left:0}
  .btn-lime,.btn-ghost{width:100%}
  .nav-actions{width:auto}
  .btn-lime.btn-sm{width:auto}
  .input-pill{flex-direction:column;border-radius:20px;padding:14px}
  .input-pill input{width:100%;text-align:center}
  .input-pill .btn-lime{width:100%}
  .to-top{right:16px;bottom:16px}
}
@media (max-width:519.98px){
  body{font-size:16px;line-height:1.8}
  h1{font-size:clamp(26px,7.4vw,32px)}
  .brand-text{max-width:46vw;overflow:hidden;text-overflow:ellipsis}
}

/* roulang page: category3 */
:root{
  --ink:#15171C;
  --ink-2:#23262E;
  --paper:#F6F4EF;
  --surface:#FFFFFF;
  --line:#E5E0D6;
  --muted:#62656E;
  --body:#3A3D45;
  --lime:#C8F169;
  --lime-deep:#A8D93C;
  --forest:#12332C;
  --danger:#C8452F;
  --radius-card:20px;
  --radius-block:28px;
  --radius-img:14px;
  --shadow-1:0 1px 2px rgba(21,23,28,.05);
  --shadow-2:0 18px 40px rgba(21,23,28,.10);
  --shadow-nav:0 10px 30px rgba(21,23,28,.08);
  --ease:cubic-bezier(.22,.61,.36,1);
  --bs-body-bg:var(--paper);
  --bs-body-color:var(--body);
  --bs-border-radius:14px;
  --bs-link-color:var(--ink);
  --bs-link-hover-color:var(--ink-2);
  --bs-font-sans-serif:"HarmonyOS Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"HarmonyOS Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  background:var(--paper);
  color:var(--body);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--ink);text-decoration:none;transition:color .24s var(--ease)}
a:hover{color:var(--ink-2)}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.02em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--ink);outline-offset:3px;border-radius:6px}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
.mono{font-family:"Inter","Space Grotesk",ui-monospace,"SFMono-Regular",Menlo,monospace;letter-spacing:-.02em}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  padding:16px 0;
  transition:padding .24s var(--ease);
}
.site-header .wrap{position:relative}
.site-header.is-scrolled{padding:10px 0}
.nav-pill{
  display:flex;align-items:center;gap:20px;
  background:rgba(246,244,239,.72);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid rgba(229,224,214,.9);
  border-radius:999px;
  padding:8px 10px 8px 18px;
  box-shadow:var(--shadow-1);
  transition:background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled .nav-pill{background:rgba(246,244,239,.96);box-shadow:var(--shadow-nav)}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;white-space:nowrap;flex:none}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:24px;height:24px;border-radius:8px;background:var(--ink);
  position:relative;flex:none;display:inline-block;
}
.brand-mark::after{
  content:"";position:absolute;inset:7px;border-radius:2px;background:var(--lime);
}
.brand-text{font-size:15px;letter-spacing:-.01em}
.nav-menu{
  display:flex;align-items:center;gap:2px;margin:0 0 0 auto;padding:0;list-style:none;
}
.nav-menu a{
  position:relative;display:block;padding:8px 12px;border-radius:999px;
  font-size:14px;color:var(--ink-2);white-space:nowrap;
  transition:color .24s var(--ease),background .24s var(--ease);
}
.nav-menu a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:1px;
  background:var(--ink);transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.nav-menu a:hover{color:var(--ink);background:rgba(21,23,28,.04)}
.nav-menu a:hover::after{transform:scaleX(1)}
.nav-menu a.is-active{color:var(--ink);font-weight:600}
.nav-menu a.is-active::before{
  content:"";position:absolute;left:50%;bottom:1px;width:4px;height:4px;
  border-radius:50%;background:var(--lime-deep);transform:translateX(-50%);
}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:6px;flex:none}
.btn-lime{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--lime);color:var(--ink);font-weight:600;font-size:14px;
  padding:12px 24px;border:1px solid var(--lime);border-radius:999px;
  cursor:pointer;transition:background .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
}
.btn-lime:hover{background:var(--lime-deep);border-color:var(--lime-deep);color:var(--ink);transform:translateY(-1px);box-shadow:0 10px 22px rgba(168,217,60,.32)}
.btn-lime:active{transform:translateY(0)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:var(--ink);font-weight:600;font-size:14px;
  padding:12px 24px;border:1px solid var(--ink);border-radius:999px;
  cursor:pointer;transition:background .24s var(--ease),color .24s var(--ease),transform .24s var(--ease);
}
.btn-ghost:hover{background:var(--ink);color:var(--paper);transform:translateY(-1px)}
.btn-sm{padding:9px 16px;font-size:13px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:50%;
  border:1px solid var(--line);background:var(--surface);
  align-items:center;justify-content:center;cursor:pointer;flex:none;
}
.nav-toggle span{position:relative;display:block;width:16px;height:2px;background:var(--ink);border-radius:2px;transition:background .2s var(--ease)}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:var(--ink);border-radius:2px;
  transition:transform .24s var(--ease),top .24s var(--ease);
}
.nav-toggle span::before{top:-5px}
.nav-toggle span::after{top:5px}
.nav-toggle.is-open span{background:transparent}
.nav-toggle.is-open span::before{top:0;transform:rotate(45deg)}
.nav-toggle.is-open span::after{top:0;transform:rotate(-45deg)}
.mobile-panel{
  display:none;flex-direction:column;gap:4px;
  position:absolute;top:calc(100% + 10px);left:0;right:0;
  background:var(--paper);border:1px solid var(--line);
  border-radius:24px;padding:14px;box-shadow:var(--shadow-2);
}
.mobile-panel.is-open{display:flex}
.mobile-panel a{
  display:flex;align-items:center;min-height:44px;padding:0 14px;
  border-radius:14px;font-size:15px;color:var(--ink-2);
}
.mobile-panel a:hover{background:rgba(21,23,28,.05);color:var(--ink)}
.mobile-panel .mobile-cta{
  justify-content:center;background:var(--lime);color:var(--ink);font-weight:600;margin-top:6px;
}

/* ---------- 通用板块 ---------- */
.section{padding:clamp(64px,8vw,104px) 0}
.section--tight{padding:clamp(48px,6vw,72px) 0}
.section-head{max-width:720px;margin-bottom:clamp(28px,4vw,48px)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.06em;color:var(--muted);
  text-transform:none;margin-bottom:14px;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--lime-deep);border-radius:2px}
.section-head h2{font-size:clamp(26px,3.4vw,38px);line-height:1.2}
.section-note{margin-top:14px;color:var(--muted);font-size:15.5px;line-height:1.8}
.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 分类页 Hero ---------- */
.page-hero{
  position:relative;isolation:isolate;
  padding:150px 0 62px;
  background:url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  border-radius:0 0 28px 28px;
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(115deg,rgba(21,23,28,.88) 0%,rgba(21,23,28,.68) 55%,rgba(21,23,28,.62) 100%);
}
.page-hero::after{
  content:"";position:absolute;inset:0;z-index:-1;opacity:.55;
  background-image:linear-gradient(rgba(255,255,255,.07) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px);
  background-size:24px 24px;
}
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:rgba(246,244,239,.68);margin-bottom:22px;
}
.crumbs a{color:rgba(246,244,239,.68);border-bottom:1px solid transparent;transition:color .24s var(--ease),border-color .24s var(--ease)}
.crumbs a:hover{color:#fff;border-bottom-color:var(--lime)}
.crumbs span.sep{color:rgba(246,244,239,.4)}
.crumbs .current{color:#fff}
.tag-pill{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;letter-spacing:.04em;
  padding:6px 14px;border-radius:999px;
  background:rgba(200,241,105,.16);color:var(--lime);
  border:1px solid rgba(200,241,105,.42);
}
.page-hero h1{
  font-size:clamp(30px,4.6vw,52px);line-height:1.14;
  color:#fff;margin:20px 0 18px;max-width:16em;
}
.hero-lead{
  max-width:640px;font-size:16.5px;line-height:1.85;color:rgba(246,244,239,.86);
}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:28px;
  padding-top:20px;border-top:1px solid rgba(246,244,239,.18);
  font-size:13.5px;color:rgba(246,244,239,.7);
}
.hero-meta strong{color:var(--lime);font-weight:600}

/* ---------- 指标卡 ---------- */
.metric-grid{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:20px;
}
.metric-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:30px 26px 28px;
  box-shadow:var(--shadow-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.metric-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#D8D2C4}
.metric-figure{
  display:flex;align-items:baseline;gap:6px;margin-bottom:10px;
}
.metric-num{
  font-family:"Inter","Space Grotesk",ui-monospace,monospace;
  font-size:clamp(40px,4.2vw,54px);line-height:1;font-weight:700;color:var(--ink);
  letter-spacing:-.03em;
}
.metric-unit{font-size:14px;color:var(--muted);font-weight:600}
.metric-card h3{font-size:19px;font-weight:600;margin-bottom:8px}
.metric-card p{font-size:14.5px;color:var(--muted);line-height:1.78}
.metric-bar{height:3px;border-radius:3px;background:var(--line);margin-top:20px;overflow:hidden}
.metric-bar i{display:block;height:100%;background:var(--lime-deep);border-radius:3px;width:0;transition:width 1s var(--ease)}
.metric-card.is-in .metric-bar i{width:var(--bar,70%)}

/* ---------- 双栏对照 ---------- */
.compare-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:0;
  border-radius:var(--radius-block);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-1);
}
.compare-col{padding:clamp(28px,3.4vw,44px)}
.compare-col--light{background:var(--surface)}
.compare-col--dark{background:#F1EEE6}
.compare-col h3{
  font-size:20px;margin-bottom:6px;
}
.compare-col .col-sub{font-size:13.5px;color:var(--muted);margin-bottom:22px}
.compare-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:13px 0;font-size:15.5px;color:var(--body);
}
.compare-list li + li{border-top:1px dashed rgba(21,23,28,.1)}
.dot{
  flex:none;width:8px;height:8px;border-radius:2px;background:var(--lime-deep);margin-top:11px;
}
.dot--ink{background:var(--ink);opacity:.55}
.compare-col--dark .dot{background:var(--ink);opacity:.45}
.compare-list b{color:var(--ink);font-weight:600}
.tip-bar{
  display:flex;align-items:flex-start;gap:14px;
  margin-top:22px;padding:20px 26px;
  background:rgba(200,241,105,.28);
  border:1px solid rgba(168,217,60,.5);
  border-radius:18px;font-size:14.5px;line-height:1.8;color:var(--ink-2);
}
.tip-bar .tip-mark{
  flex:none;width:24px;height:24px;border-radius:50%;background:var(--ink);color:var(--lime);
  font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;
  font-family:"Inter","Space Grotesk",ui-monospace,monospace;margin-top:2px;
}

/* ---------- 图文 / 阅读顺序 ---------- */
.detail-grid{
  display:grid;grid-template-columns:6fr 6fr;gap:clamp(28px,4vw,56px);align-items:start;
}
.detail-media{margin:0}
.detail-media img{
  width:100%;height:auto;border-radius:var(--radius-img);
  aspect-ratio:16/10;object-fit:cover;box-shadow:var(--shadow-1);
}
.detail-media figcaption{
  margin-top:12px;font-size:13px;color:var(--muted);text-align:center;
}
.step-list li{
  display:flex;gap:18px;padding:20px 0;
  border-bottom:1px solid var(--line);
}
.step-list li:first-child{padding-top:0}
.step-list li:last-child{border-bottom:0}
.step-num{
  flex:none;width:44px;height:44px;border-radius:50%;
  border:1px solid var(--line);background:var(--surface);
  display:flex;align-items:center;justify-content:center;
  font-family:"Inter","Space Grotesk",ui-monospace,monospace;
  font-size:14px;font-weight:700;color:var(--ink);
}
.step-list h3{font-size:18px;font-weight:600;margin-bottom:6px}
.step-list p{font-size:14.8px;color:var(--muted);line-height:1.8}

/* ---------- FAQ ---------- */
.faq-accordion{border-top:1px solid var(--line)}
.faq-accordion .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line)}
.faq-accordion .accordion-button{
  position:relative;background:transparent;box-shadow:none;border-radius:0;
  color:var(--ink);font-size:17px;font-weight:600;line-height:1.6;
  padding:24px 52px 24px 0;text-align:left;
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--ink);background:transparent;box-shadow:none}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:none;border-color:transparent}
.faq-accordion .accordion-button:focus-visible{outline:2px solid var(--ink);outline-offset:4px}
.faq-accordion .accordion-button::after{display:none}
.faq-accordion .accordion-button::before{
  content:"+";position:absolute;right:0;top:50%;transform:translateY(-50%);
  width:24px;height:24px;border-radius:50%;background:var(--lime);color:var(--ink);
  font-size:15px;line-height:24px;text-align:center;font-weight:600;
  transition:transform .24s var(--ease),background .24s var(--ease);
}
.faq-accordion .accordion-button:not(.collapsed)::before{transform:translateY(-50%) rotate(45deg);background:var(--lime-deep)}
.faq-accordion .accordion-body{
  padding:0 52px 26px 0;font-size:15.5px;color:var(--muted);line-height:1.9;
}

/* ---------- CTA ---------- */
.cta-block{
  position:relative;overflow:hidden;
  background:var(--forest);border-radius:var(--radius-block);
  padding:clamp(36px,5vw,64px);
  display:grid;grid-template-columns:1.25fr .75fr;gap:36px;align-items:center;
}
.cta-block::after{
  content:"";position:absolute;right:-90px;top:-90px;width:300px;height:300px;border-radius:50%;
  background:radial-gradient(circle,rgba(200,241,105,.22),transparent 68%);
  pointer-events:none;
}
.cta-block h2{color:#fff;font-size:clamp(24px,3vw,34px);line-height:1.25;max-width:18em}
.cta-block p{color:rgba(246,244,239,.76);margin-top:14px;font-size:15.5px;max-width:34em}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}
.cta-actions .btn-ghost{border-color:rgba(246,244,239,.6);color:#F6F4EF}
.cta-actions .btn-ghost:hover{background:#F6F4EF;color:var(--ink);border-color:#F6F4EF}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#B9BCC4;padding:clamp(52px,6vw,76px) 0 0;margin-top:clamp(56px,7vw,96px)}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;
  padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:15px;margin-bottom:16px}
.footer-brand .brand-mark{background:#fff}
.footer-brand .brand-mark::after{background:var(--lime)}
.footer-about p{font-size:14px;line-height:1.85;color:#B9BCC4;max-width:34em}
.footer-col h4{color:#fff;font-size:13.5px;letter-spacing:.06em;font-weight:600;margin-bottom:16px}
.footer-col a{display:block;font-size:14px;color:#B9BCC4;padding:6px 0;border-bottom:1px solid transparent;transition:color .24s var(--ease)}
.footer-col a:hover{color:var(--lime);text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  padding:24px 0 30px;font-size:13px;color:#8A8E97;
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  background:var(--ink);color:var(--lime);border:0;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;
  z-index:900;box-shadow:var(--shadow-2);
}
.to-top.is-show{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--ink-2)}

/* ---------- 响应式 ---------- */
@media (max-width:1399px){
  .wrap{max-width:1140px}
}
@media (max-width:1199px){
  .nav-menu a{padding:8px 9px;font-size:13.5px}
  .metric-grid{gap:16px}
}
@media (max-width:991px){
  .nav-menu{display:none}
  .nav-toggle{display:flex}
  .nav-actions .btn-lime{display:none}
  .nav-pill{padding:8px 10px 8px 16px;gap:12px}
  .page-hero{padding:132px 0 52px}
  .metric-grid{grid-template-columns:1fr}
  .compare-grid{grid-template-columns:1fr}
  .detail-grid{grid-template-columns:1fr}
  .cta-block{grid-template-columns:1fr;gap:24px}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-about{grid-column:1 / -1}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.8}
  .wrap{padding:0 16px}
  .brand-text{font-size:13.5px;max-width:11em;overflow:hidden;text-overflow:ellipsis}
  .page-hero{padding:120px 0 44px;border-radius:0 0 22px 22px}
  .page-hero h1{font-size:clamp(26px,7.6vw,34px)}
  .hero-lead{font-size:15.5px}
  .section{padding:52px 0}
  .metric-card{padding:24px 20px}
  .compare-col{padding:26px 20px}
  .tip-bar{padding:18px 18px;font-size:14px}
  .faq-accordion .accordion-button{font-size:16px;padding:20px 46px 20px 0}
  .faq-accordion .accordion-body{padding:0 46px 22px 0}
  .cta-block{border-radius:24px;padding:32px 22px}
  .footer-grid{grid-template-columns:1fr;gap:24px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;gap:6px}
  .to-top{right:16px;bottom:16px}
  .btn-lime,.btn-ghost{width:100%}
  .cta-actions{flex-direction:column;width:100%}
  .hero-meta{gap:8px 18px;font-size:13px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category4 */
:root{
  --ink:#15171C;
  --ink-2:#23262E;
  --paper:#F6F4EF;
  --surface:#FFFFFF;
  --line:#E5E0D6;
  --muted:#62656E;
  --body:#3A3D45;
  --lime:#C8F169;
  --lime-deep:#A8D93C;
  --forest:#12332C;
  --danger:#C8452F;
  --radius-card:20px;
  --radius-block:28px;
  --radius-img:14px;
  --shadow-1:0 1px 2px rgba(21,23,28,.05);
  --shadow-2:0 18px 40px rgba(21,23,28,.10);
  --shadow-nav:0 10px 30px rgba(21,23,28,.08);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:"HarmonyOS Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Inter","Space Grotesk","HarmonyOS Sans SC","PingFang SC",system-ui,sans-serif;
  --bs-body-bg:#F6F4EF;
  --bs-body-color:#3A3D45;
  --bs-border-radius:20px;
  --bs-link-color:#15171C;
  --bs-link-hover-color:#23262E;
  --bs-font-sans-serif:"HarmonyOS Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.85;
  color:var(--body);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--ink);text-decoration:none;transition:color .22s var(--ease),border-color .22s var(--ease)}
a:hover{color:var(--ink-2)}
button{font-family:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.02em;font-weight:700}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
::selection{background:var(--lime);color:var(--ink)}
:focus-visible{outline:2px solid var(--ink);outline-offset:3px;border-radius:6px}

.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:clamp(56px,7vw,96px) 0}

/* ---------- 顶部悬浮胶囊导航 ---------- */
.site-header{
  position:sticky;
  top:12px;
  z-index:1000;
  padding:14px 0 0;
}
.nav-pill{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:8px 10px 8px 18px;
  border-radius:999px;
  background:rgba(246,244,239,.72);
  border:1px solid rgba(229,224,214,.9);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-1);
  transition:background .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
}
.site-header.is-scrolled .nav-pill{
  background:rgba(250,248,243,.95);
  box-shadow:var(--shadow-nav);
  border-color:var(--line);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-weight:700;
  font-size:15.5px;
  color:var(--ink);
  letter-spacing:-.01em;
  white-space:nowrap;
}
.brand-mark{
  width:24px;
  height:24px;
  border-radius:8px;
  background:var(--ink);
  position:relative;
  flex:0 0 24px;
}
.brand-mark::after{
  content:"";
  position:absolute;
  inset:7px;
  border-radius:3px;
  background:var(--lime);
  transform:rotate(45deg);
}
.brand-text{line-height:1.2}
.nav-menu{
  display:flex;
  align-items:center;
  gap:2px;
  margin:0;
}
.nav-menu a{
  display:inline-block;
  position:relative;
  padding:9px 12px;
  font-size:14px;
  color:var(--body);
  border-radius:999px;
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-menu a::before{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:6px;
  height:1px;
  background:var(--ink);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s var(--ease);
}
.nav-menu a:hover{color:var(--ink);background:rgba(255,255,255,.62)}
.nav-menu a:hover::before{transform:scaleX(1)}
.nav-menu a.is-active{color:var(--ink);font-weight:600}
.nav-menu a.is-active::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:2px;
  width:4px;
  height:4px;
  margin-left:-2px;
  border-radius:50%;
  background:var(--lime-deep);
}
.nav-actions{display:flex;align-items:center;gap:8px}
.btn-lime{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  border-radius:999px;
  border:1px solid transparent;
  background:var(--lime);
  color:var(--ink);
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  cursor:pointer;
  box-shadow:var(--shadow-1);
  transition:background .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-lime:hover{background:var(--lime-deep);color:var(--ink);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-lime:active{transform:translateY(0)}
.btn-sm{padding:9px 18px;font-size:13.5px}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  border-radius:999px;
  border:1px solid rgba(21,23,28,.24);
  background:transparent;
  color:var(--ink);
  font-size:15px;
  font-weight:600;
  transition:border-color .22s var(--ease),background .22s var(--ease),transform .22s var(--ease);
}
.btn-ghost:hover{border-color:var(--ink);background:rgba(255,255,255,.6);transform:translateY(-2px)}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border-radius:50%;
  border:1px solid var(--line);
  background:var(--surface);
  align-items:center;
  justify-content:center;
  cursor:pointer;
}
.nav-toggle span{
  display:block;
  position:relative;
  width:16px;
  height:2px;
  background:var(--ink);
  border-radius:2px;
  transition:background .2s var(--ease),transform .2s var(--ease);
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;
  left:0;
  width:16px;
  height:2px;
  background:var(--ink);
  border-radius:2px;
  transition:transform .24s var(--ease);
}
.nav-toggle span::before{top:-5px}
.nav-toggle span::after{top:5px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-5px) rotate(-45deg)}
.mobile-panel{
  display:none;
  margin-top:10px;
  padding:10px;
  border-radius:24px;
  background:rgba(250,248,243,.98);
  border:1px solid var(--line);
  box-shadow:var(--shadow-nav);
}
.mobile-panel.is-open{display:block}
.mobile-panel a{
  display:flex;
  align-items:center;
  min-height:44px;
  padding:0 16px;
  border-radius:14px;
  font-size:15px;
  color:var(--body);
}
.mobile-panel a:hover,.mobile-panel a.is-active{background:rgba(255,255,255,.92);color:var(--ink);font-weight:600}
.mobile-panel .mobile-cta{
  margin-top:6px;
  justify-content:center;
  background:var(--lime);
  color:var(--ink);
  font-weight:700;
}
.mobile-panel .mobile-cta:hover{background:var(--lime-deep)}

/* ---------- 迷你 Hero ---------- */
.page-hero{
  position:relative;
  margin-top:18px;
  border-radius:var(--radius-block);
  overflow:hidden;
  min-height:clamp(220px,26vw,320px);
  display:flex;
  align-items:stretch;
  background-image:linear-gradient(100deg,rgba(21,23,28,.78) 0%,rgba(21,23,28,.62) 52%,rgba(21,23,28,.42) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  box-shadow:var(--shadow-1);
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(246,244,239,.10) 1px,transparent 1px),linear-gradient(90deg,rgba(246,244,239,.10) 1px,transparent 1px);
  background-size:24px 24px;
  opacity:.55;
  pointer-events:none;
}
.page-hero .hero-inner{
  position:relative;
  z-index:2;
  display:flex;
  flex-direction:column;
  justify-content:space-between;
  gap:18px;
  padding:clamp(22px,3vw,34px);
  width:100%;
}
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:rgba(246,244,239,.66);
}
.crumbs a{color:rgba(246,244,239,.72);border-bottom:1px solid transparent;padding-bottom:1px}
.crumbs a:hover{color:#fff;border-bottom-color:var(--lime)}
.crumbs .sep{color:rgba(246,244,239,.38)}
.crumbs .current{color:#fff}
.hero-bottom{display:flex;flex-direction:column;gap:14px;max-width:760px}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  align-self:flex-start;
  padding:6px 12px;
  border-radius:999px;
  font-size:12.5px;
  letter-spacing:.06em;
  line-height:1;
  background:var(--lime);
  color:var(--ink);
  border:1px solid rgba(21,23,28,.08);
  font-weight:600;
}
.tag.tag-soft{
  background:rgba(255,255,255,.14);
  color:#F6F4EF;
  border-color:rgba(246,244,239,.28);
  backdrop-filter:blur(6px);
}
.page-hero h1{
  font-size:clamp(30px,4.2vw,50px);
  line-height:1.16;
  color:#fff;
  font-weight:700;
  letter-spacing:-.02em;
}
.page-hero h1 .hl{
  background:linear-gradient(transparent 62%,rgba(200,241,105,.55) 62%,rgba(200,241,105,.55) 92%,transparent 92%);
  color:#fff;
}
.page-hero .hero-sub{
  font-size:16px;
  color:rgba(246,244,239,.86);
  margin:0;
  max-width:640px;
}

/* ---------- 通用板块头 ---------- */
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px 32px;
  margin-bottom:clamp(26px,3.4vw,40px);
}
.section-head .head-text{max-width:660px}
.section-head h2{
  font-size:clamp(25px,3.2vw,36px);
  line-height:1.22;
  margin-bottom:10px;
}
.section-head p{color:var(--muted);font-size:15px;margin:0}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-num);
  font-size:12.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--muted);
  margin-bottom:12px;
}
.eyebrow::before{
  content:"";
  width:22px;
  height:2px;
  background:var(--lime-deep);
  border-radius:2px;
}

/* ---------- 三项核对 ---------- */
.check-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:0;
  border-top:1px solid var(--line);
}
.check-item{
  padding:26px 26px 26px 0;
  border-right:1px solid var(--line);
}
.check-item:last-child{border-right:0;padding-right:0}
.check-item:nth-child(n+2){padding-left:26px}
.check-num{
  font-family:var(--font-num);
  font-size:14px;
  letter-spacing:.1em;
  color:var(--muted);
  display:block;
  margin-bottom:12px;
}
.check-item h3{font-size:19px;line-height:1.4;margin-bottom:10px}
.check-item p{font-size:15px;color:var(--body);margin:0}

/* ---------- 主体两栏：FAQ + 侧栏 ---------- */
.main-grid{
  display:grid;
  grid-template-columns:minmax(0,2fr) minmax(0,1fr);
  gap:clamp(28px,3.6vw,48px);
  align-items:start;
}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-btn{
  width:100%;
  display:flex;
  align-items:flex-start;
  gap:14px;
  padding:22px 4px;
  background:none;
  border:0;
  text-align:left;
  font-size:17px;
  font-weight:600;
  line-height:1.55;
  color:var(--ink);
  cursor:pointer;
  transition:color .2s var(--ease);
}
.faq-btn:hover{color:#000}
.faq-btn[aria-expanded="true"]{color:var(--ink)}
.faq-sign{
  position:relative;
  flex:0 0 24px;
  width:24px;
  height:24px;
  border-radius:50%;
  background:var(--lime);
  margin-top:2px;
  transition:transform .24s var(--ease),background .24s var(--ease);
}
.faq-sign::before,.faq-sign::after{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  background:var(--ink);
  border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-sign::before{width:11px;height:2px}
.faq-sign::after{width:2px;height:11px}
.faq-btn[aria-expanded="true"] .faq-sign{transform:rotate(45deg);background:var(--lime-deep)}
.faq-a{
  padding:0 46px 24px 42px;
  font-size:16px;
  line-height:1.85;
  color:var(--body);
}
.faq-a ul{margin:12px 0 0}
.faq-a li{
  position:relative;
  padding-left:18px;
  margin-bottom:8px;
  font-size:15.5px;
}
.faq-a li::before{
  content:"";
  position:absolute;
  left:0;
  top:.72em;
  width:8px;
  height:8px;
  background:var(--lime-deep);
  border-radius:2px;
}

/* ---------- 侧栏入口卡 ---------- */
.side-card{
  position:sticky;
  top:104px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  padding:26px;
}
.side-card h3{font-size:19px;margin-bottom:6px}
.side-card .side-note{
  font-size:13.5px;
  color:var(--muted);
  margin:0 0 14px;
  line-height:1.7;
}
.side-links a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:14px 0;
  border-top:1px solid var(--line);
  font-size:15px;
  color:var(--body);
  font-weight:500;
}
.side-links a:hover{color:var(--ink)}
.side-links .arrow{
  font-family:var(--font-num);
  font-size:15px;
  color:var(--muted);
  transition:transform .22s var(--ease),color .22s var(--ease);
}
.side-links a:hover .arrow{transform:translateX(4px);color:var(--ink)}
.side-card .btn-lime{width:100%;margin-top:20px}
.side-meta{
  margin-top:18px;
  padding-top:16px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--muted);
  line-height:1.75;
}
.side-meta strong{color:var(--ink);font-weight:600}

/* ---------- 反馈信息清单 ---------- */
.notice-box{
  background:rgba(200,241,105,.16);
  border:1px solid rgba(168,217,60,.55);
  border-radius:var(--radius-card);
  padding:22px 26px;
  display:flex;
  gap:14px;
  align-items:flex-start;
  margin-bottom:clamp(24px,3vw,34px);
}
.notice-box .dot{
  flex:0 0 10px;
  width:10px;
  height:10px;
  margin-top:9px;
  border-radius:50%;
  background:var(--ink);
}
.notice-box p{margin:0;font-size:15.5px;color:var(--ink-2)}
.info-columns{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:12px 40px;
}
.info-columns li{
  position:relative;
  padding-left:22px;
  font-size:15.5px;
  color:var(--body);
  line-height:1.8;
}
.info-columns li::before{
  content:"";
  position:absolute;
  left:0;
  top:.66em;
  width:8px;
  height:8px;
  border-radius:2px;
  background:var(--lime-deep);
}
.info-columns li b{color:var(--ink);font-weight:600}

/* ---------- CTA 区块 ---------- */
.cta-block{
  background:var(--forest);
  border-radius:var(--radius-block);
  padding:clamp(30px,4.6vw,56px);
  color:#EDEFEA;
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:clamp(24px,4vw,48px);
  align-items:center;
}
.cta-block h2{
  color:#fff;
  font-size:clamp(24px,3vw,34px);
  line-height:1.24;
  margin-bottom:12px;
}
.cta-block p{
  color:rgba(237,239,234,.78);
  font-size:15.5px;
  margin:0;
  max-width:460px;
}
.sub-form{
  display:flex;
  align-items:center;
  gap:8px;
  padding:6px 6px 6px 20px;
  border-radius:999px;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(246,244,239,.24);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.sub-form:focus-within{
  border-color:rgba(200,241,105,.8);
  box-shadow:0 0 0 4px rgba(200,241,105,.22);
}
.sub-form input{
  flex:1 1 auto;
  min-width:0;
  height:44px;
  border:0;
  background:transparent;
  color:#fff;
  font-size:15px;
  font-family:inherit;
}
.sub-form input::placeholder{color:rgba(237,239,234,.55)}
.sub-form input:focus{outline:none}
.sub-form .btn-lime{flex:0 0 auto;padding:11px 22px;font-size:14.5px}
.form-hint{
  margin:12px 0 0;
  font-size:13px;
  color:rgba(237,239,234,.6);
  line-height:1.7;
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);
  color:#B9BCC4;
  margin-top:clamp(56px,7vw,96px);
  border-radius:var(--radius-block) var(--radius-block) 0 0;
  padding:clamp(48px,6vw,76px) 0 26px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:36px 32px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:15.5px;
  font-weight:700;
  color:#fff;
  margin-bottom:14px;
}
.footer-brand .brand-mark{background:rgba(255,255,255,.14)}
.footer-brand .brand-mark::after{background:var(--lime)}
.footer-about p{
  font-size:14px;
  color:#8F939C;
  line-height:1.8;
  margin:0;
  max-width:320px;
}
.footer-col h4{
  font-size:13px;
  letter-spacing:.08em;
  color:#fff;
  font-weight:600;
  margin-bottom:12px;
}
.footer-col a{
  display:block;
  padding:6px 0;
  font-size:14px;
  color:#B9BCC4;
}
.footer-col a:hover{color:var(--lime);text-decoration:underline;text-underline-offset:4px}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px 24px;
  margin-top:clamp(32px,4vw,48px);
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;
  color:#8B9099;
  line-height:1.7;
}

/* ---------- 返回顶部 ---------- */
#toTop{
  position:fixed;
  right:24px;
  bottom:24px;
  width:44px;
  height:44px;
  border-radius:50%;
  border:0;
  background:var(--ink);
  color:var(--lime);
  display:grid;
  place-items:center;
  cursor:pointer;
  opacity:0;
  pointer-events:none;
  transform:translateY(8px);
  transition:opacity .26s var(--ease),transform .26s var(--ease),background .22s var(--ease);
  z-index:900;
  box-shadow:var(--shadow-nav);
}
#toTop.is-show{opacity:1;pointer-events:auto;transform:translateY(0)}
#toTop:hover{background:var(--ink-2)}
#toTop svg{width:18px;height:18px}

/* ---------- 入场动效 ---------- */
.reveal{
  opacity:0;
  transform:translateY(14px);
  transition:opacity .6s var(--ease),transform .6s var(--ease);
}
.reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .nav-menu a{padding:9px 9px;font-size:13.5px}
  .brand-text{font-size:14.5px}
}
@media (max-width:991.98px){
  .nav-menu{display:none}
  .nav-actions .btn-lime{display:none}
  .nav-toggle{display:inline-flex}
  .nav-pill{padding:8px 10px 8px 14px}
  .main-grid{grid-template-columns:1fr}
  .side-card{position:static;top:auto}
  .check-grid{grid-template-columns:1fr}
  .check-item{border-right:0;border-bottom:1px solid var(--line);padding:22px 0}
  .check-item:nth-child(n+2){padding-left:0}
  .check-item:last-child{border-bottom:0}
  .cta-block{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .info-columns{grid-template-columns:1fr}
}
@media (max-width:767.98px){
  body{font-size:16px;line-height:1.8}
  .wrap{padding:0 16px}
  .page-hero{margin-top:14px;border-radius:22px;background-image:linear-gradient(100deg,rgba(21,23,28,.86) 0%,rgba(21,23,28,.72) 60%,rgba(21,23,28,.6) 100%),url('/assets/images/backpic/back-1.webp')}
  .page-hero h1{font-size:clamp(28px,7.4vw,36px)}
  .page-hero .hero-sub{font-size:15px}
  .faq-btn{font-size:16px;padding:18px 2px}
  .faq-a{padding:0 2px 20px 38px;font-size:15.5px}
  .side-card{padding:22px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column}
  .btn-lime,.btn-ghost{width:100%}
  .sub-form{flex-wrap:wrap;border-radius:20px;padding:12px}
  .sub-form input{width:100%;flex:1 1 100%;padding:0 4px}
  .sub-form .btn-lime{width:100%}
  #toTop{right:16px;bottom:16px}
}
@media (max-width:519.98px){
  .brand-text{font-size:13.5px;max-width:150px;white-space:normal;line-height:1.25}
  .section{padding:48px 0}
  .notice-box{padding:18px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category5 */
:root{
  --ink:#15171C;
  --ink-2:#23262E;
  --paper:#F6F4EF;
  --surface:#FFFFFF;
  --line:#E5E0D6;
  --muted:#62656E;
  --lime:#C8F169;
  --lime-deep:#A8D93C;
  --forest:#12332C;
  --danger:#C8452F;
  --body-text:#3A3D45;
  --radius-card:20px;
  --radius-block:28px;
  --radius-img:14px;
  --shadow-1:0 1px 2px rgba(21,23,28,.05);
  --shadow-2:0 18px 40px rgba(21,23,28,.10);
  --shadow-nav:0 10px 30px rgba(21,23,28,.08);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-sans:"HarmonyOS Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Inter","Space Grotesk",ui-monospace,SFMono-Regular,Menlo,monospace;
  --bs-body-bg:#F6F4EF;
  --bs-body-color:#3A3D45;
  --bs-border-color:#E5E0D6;
  --bs-border-radius:20px;
  --bs-link-color:#15171C;
  --bs-link-hover-color:#15171C;
  --bs-emphasis-color:#15171C;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--body-text);
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--ink);text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--ink-2)}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.02em;line-height:1.2}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--ink);outline-offset:3px}
.wrap{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.section{padding:clamp(60px,7.5vw,104px) 0}
.section-tight{padding:clamp(40px,5vw,64px) 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.1em;text-transform:uppercase;
  color:var(--muted);font-weight:600;margin-bottom:14px;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--ink);display:inline-block}
.section-head{max-width:720px;margin-bottom:clamp(28px,4vw,48px)}
.section-head h2{font-size:clamp(26px,3.4vw,40px);line-height:1.2}
.section-head p{margin-top:14px;color:var(--muted);font-size:15.5px;line-height:1.9}

/* ============ header / nav ============ */
.site-header{position:sticky;top:0;z-index:120;padding-top:14px}
.nav-pill{
  display:flex;align-items:center;gap:14px;
  background:rgba(246,244,239,.72);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid rgba(229,224,214,.9);
  border-radius:999px;
  padding:8px 10px 8px 18px;
  box-shadow:0 1px 2px rgba(21,23,28,.04);
  transition:background .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
}
.site-header.is-scrolled .nav-pill{
  background:rgba(246,244,239,.95);
  box-shadow:var(--shadow-nav);
  border-color:var(--line);
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  position:relative;width:22px;height:22px;border-radius:7px;background:var(--ink);
  display:inline-block;flex-shrink:0;
}
.brand-mark::after{
  content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:8px;height:8px;border-radius:50%;background:var(--lime);
}
.brand-text{font-size:15px;font-weight:700;color:var(--ink);letter-spacing:-.01em;white-space:nowrap}
.nav-menu{display:flex;align-items:center;gap:2px;margin:0 auto;padding:0;list-style:none}
.nav-menu a{
  position:relative;display:inline-block;
  font-size:14px;color:#3A3D45;padding:9px 12px;border-radius:999px;
  transition:color .22s var(--ease);
}
.nav-menu a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:5px;height:1px;background:var(--ink);
  transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
}
.nav-menu a:hover{color:var(--ink)}
.nav-menu a:hover::after{transform:scaleX(1)}
.nav-menu a.is-active{color:var(--ink);font-weight:600}
.nav-menu a.is-active::before{
  content:"";position:absolute;left:50%;bottom:-1px;transform:translateX(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--lime);
}
.nav-actions{display:flex;align-items:center;gap:8px;margin-left:auto;flex-shrink:0}
.btn-lime,.btn-ink,.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;font-weight:600;font-size:14px;line-height:1;
  padding:13px 22px;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-lime{background:var(--lime);color:var(--ink);border-color:var(--lime)}
.btn-lime:hover{background:var(--lime-deep);border-color:var(--lime-deep);color:var(--ink);transform:translateY(-1px)}
.btn-ink{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn-ink:hover{background:var(--ink-2);border-color:var(--ink-2);color:var(--lime);transform:translateY(-1px)}
.btn-line{background:transparent;color:var(--ink);border-color:rgba(21,23,28,.28)}
.btn-line:hover{background:var(--ink);color:#fff;border-color:var(--ink);transform:translateY(-1px)}
.btn-sm{padding:10px 16px;font-size:13px}
.nav-toggle{
  display:none;position:relative;width:44px;height:44px;flex-shrink:0;
  border-radius:50%;border:1px solid var(--line);background:var(--surface);cursor:pointer;
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.nav-toggle:hover{border-color:var(--ink)}
.nav-toggle span{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:16px;height:1.6px;background:var(--ink);border-radius:2px;
  transition:background .22s var(--ease);
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:1.6px;background:var(--ink);
  border-radius:2px;transition:transform .24s var(--ease);
}
.nav-toggle span::before{top:-5px}
.nav-toggle span::after{top:5px}
.nav-toggle.is-open span{background:transparent}
.nav-toggle.is-open span::before{transform:translateY(5px) rotate(45deg)}
.nav-toggle.is-open span::after{transform:translateY(-5px) rotate(-45deg)}
.mobile-panel{display:none;margin-top:10px}
.mobile-panel.is-open{display:block}
.mobile-panel a{
  display:flex;align-items:center;min-height:44px;padding:0 14px;border-radius:14px;
  font-size:15px;color:#3A3D45;transition:background .2s var(--ease),color .2s var(--ease);
}
.mobile-panel a:hover{background:#fff;color:var(--ink)}
.mobile-cta{
  justify-content:center;margin-top:6px;background:var(--lime);color:var(--ink)!important;font-weight:600;
}
.mobile-panel.is-open{
  background:var(--paper);border:1px solid var(--line);border-radius:24px;padding:10px;
  box-shadow:var(--shadow-nav);
}

/* ============ crumb ============ */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);padding-top:22px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:3px}
.crumb .sep{color:#B7B2A6}
.crumb [aria-current="page"]{color:var(--ink)}

/* ============ page hero ============ */
.hero-shell{padding-top:16px}
.page-hero{
  position:relative;overflow:hidden;border-radius:var(--radius-block);
  min-height:clamp(240px,29vw,330px);
  display:flex;flex-direction:column;justify-content:space-between;
  padding:clamp(24px,3.6vw,44px);
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  box-shadow:var(--shadow-1);
}
.page-hero::before{
  content:"";position:absolute;inset:0;background:rgba(21,23,28,.62);z-index:0;
}
.page-hero::after{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px);
  background-size:24px 24px;
}
.hero-top,.hero-bottom{position:relative;z-index:2}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(200,241,105,.92);color:var(--ink);
  font-size:12.5px;font-weight:600;letter-spacing:.04em;
  padding:7px 14px;border-radius:999px;
}
.hero-bottom{max-width:760px}
.page-hero h1{
  color:#fff;font-size:clamp(30px,4.2vw,50px);line-height:1.14;
  letter-spacing:-.02em;margin-top:18px;
}
.page-hero h1 em{font-style:normal;box-shadow:inset 0 -10px 0 rgba(200,241,105,.55)}
.page-hero .hero-desc{
  color:rgba(255,255,255,.84);font-size:16px;line-height:1.75;margin-top:14px;max-width:620px;
}

/* ============ narrative ============ */
.narrative-grid{
  display:grid;grid-template-columns:1.02fr 1fr;gap:clamp(24px,4.2vw,56px);align-items:center;
}
.narrative-media{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-2);aspect-ratio:4/3;background:var(--line);
}
.narrative-media img{width:100%;height:100%;object-fit:cover}
.narrative-media .media-badge{
  position:absolute;left:18px;bottom:18px;
  background:rgba(246,244,239,.94);color:var(--ink);
  font-size:12.5px;font-weight:600;letter-spacing:.04em;
  padding:8px 14px;border-radius:999px;
}
.narrative-body h2{font-size:clamp(25px,3.2vw,36px);line-height:1.22}
.narrative-body > p{margin-top:16px;color:var(--muted);font-size:15.5px;line-height:1.9}
.step-list{margin-top:26px}
.step-list li{
  display:flex;gap:18px;padding:18px 0;border-top:1px solid var(--line);
}
.step-list li:last-child{border-bottom:1px solid var(--line)}
.step-list .step-num{
  font-family:var(--font-num);font-size:13px;letter-spacing:-.02em;
  color:var(--muted);padding-top:3px;flex-shrink:0;min-width:26px;
}
.step-list h3{font-size:17.5px;font-weight:600;line-height:1.45}
.step-list p{margin-top:6px;font-size:14.5px;color:var(--muted);line-height:1.8}

/* ============ device cards ============ */
.device-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.device-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 24px 24px;box-shadow:var(--shadow-1);
  transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
  display:flex;flex-direction:column;
}
.device-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#D9D2C4}
.badge-pill{
  display:inline-flex;align-items:center;align-self:flex-start;gap:6px;
  font-size:12px;font-weight:600;letter-spacing:.06em;
  padding:6px 12px;border-radius:999px;
  background:rgba(200,241,105,.26);border:1px solid rgba(200,241,105,.85);color:#22301A;
}
.device-card h3{margin-top:16px;font-size:20px;line-height:1.35}
.device-card > p{margin-top:10px;font-size:14.5px;color:var(--muted);line-height:1.85}
.device-card ul{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);display:grid;gap:10px}
.device-card ul li{
  position:relative;padding-left:18px;font-size:14px;color:var(--body-text);line-height:1.75;
}
.device-card ul li::before{
  content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;background:var(--lime);border-radius:2px;
}
.device-foot{
  margin-top:22px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  font-size:14px;color:var(--muted);
}
.device-foot a{color:var(--ink);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.device-foot a:hover{text-decoration:underline;text-underline-offset:4px}

/* ============ contact / form ============ */
.contact-grid{display:grid;grid-template-columns:1.65fr 1fr;gap:24px;align-items:start}
.form-card,.info-card{
  background:var(--surface);border:1px solid var(--line);border-radius:24px;
  padding:clamp(22px,3vw,34px);box-shadow:var(--shadow-1);
}
.form-card h2{font-size:clamp(23px,2.6vw,30px)}
.form-card > p.form-intro{margin-top:12px;color:var(--muted);font-size:14.5px;line-height:1.85}
.contact-form{margin-top:24px}
.field-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:8px;min-width:0}
.field-full{grid-column:1 / -1}
.field label{font-size:13px;font-weight:600;color:var(--ink);letter-spacing:.01em}
.field input,.field select,.field textarea{
  width:100%;background:var(--paper);border:1px solid var(--line);color:var(--body-text);
  border-radius:999px;height:48px;padding:0 18px;font-size:15px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.field textarea{
  height:auto;min-height:126px;border-radius:16px;padding:14px 18px;line-height:1.8;resize:vertical;
}
.field select{appearance:none;-webkit-appearance:none;cursor:pointer;
  background-image:linear-gradient(45deg,transparent 50%,#62656E 50%),linear-gradient(135deg,#62656E 50%,transparent 50%);
  background-position:calc(100% - 22px) 21px,calc(100% - 16px) 21px;
  background-size:6px 6px,6px 6px;background-repeat:no-repeat;padding-right:44px;
}
.field input::placeholder,.field textarea::placeholder{color:#9A9CA4}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--ink);background:#fff;
  box-shadow:0 0 0 4px rgba(200,241,105,.45);
}
.form-foot{
  margin-top:22px;display:flex;flex-wrap:wrap;align-items:center;gap:16px;
}
.form-note{font-size:13.5px;color:var(--muted);line-height:1.7}
.form-note.is-ok{color:#2C4A1E;font-weight:600}
.form-note.is-err{color:var(--danger)}
.info-card h3{font-size:19px}
.info-card .info-lead{margin-top:10px;font-size:14px;color:var(--muted);line-height:1.8}
.info-list{margin-top:6px;display:grid;gap:0}
.info-list li{border-top:1px solid var(--line);padding:14px 0}
.info-list .k{display:block;font-size:12.5px;letter-spacing:.06em;color:var(--muted);font-weight:600}
.info-list .v{display:block;margin-top:5px;font-size:15px;color:var(--ink);font-weight:600;line-height:1.6}
.info-list .d{display:block;margin-top:4px;font-size:13.5px;color:var(--muted);line-height:1.7}
.info-card .btn-line{margin-top:18px;width:100%}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:1fr 1.7fr;gap:clamp(24px,4vw,48px);align-items:start}
.faq-intro h2{font-size:clamp(25px,3.2vw,36px)}
.faq-intro p{margin-top:14px;color:var(--muted);font-size:15px;line-height:1.9}
.faq-intro .faq-link{
  display:inline-flex;align-items:center;gap:8px;margin-top:20px;font-weight:600;font-size:14.5px;
  border-bottom:1px solid var(--ink);padding-bottom:3px;
}
.accordion{--bs-accordion-border-width:0;--bs-accordion-bg:transparent;--bs-accordion-btn-focus-box-shadow:none}
.accordion-item{background:transparent;border:0;border-top:1px solid var(--line)}
.accordion-item:last-child{border-bottom:1px solid var(--line)}
.accordion-button{
  background:transparent;color:var(--ink);font-weight:600;font-size:17px;line-height:1.5;
  padding:20px 52px 20px 0;box-shadow:none;
}
.accordion-button:not(.collapsed){background:transparent;color:var(--ink);box-shadow:none}
.accordion-button:focus{box-shadow:none;outline:none;color:var(--ink)}
.accordion-button:focus-visible{outline:2px solid var(--ink);outline-offset:4px;border-radius:8px}
.accordion-button::after{
  content:"";flex-shrink:0;width:28px;height:28px;border-radius:50%;background-color:var(--lime);
  background-image:linear-gradient(var(--ink),var(--ink)),linear-gradient(var(--ink),var(--ink));
  background-size:12px 2px,2px 12px;
  background-position:center,center;
  background-repeat:no-repeat;
  margin-left:auto;transition:transform .24s var(--ease);
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg);background-color:var(--lime-deep)}
.accordion-body{padding:0 48px 24px 0;font-size:15px;color:var(--body-text);line-height:1.9}
.accordion-body strong{color:var(--ink)}

/* ============ CTA band ============ */
.cta-band{
  background:var(--forest);color:#fff;border-radius:var(--radius-block);
  padding:clamp(28px,4vw,52px);
  display:grid;grid-template-columns:1.35fr 1fr;gap:clamp(20px,3vw,40px);align-items:center;
}
.cta-band h2{color:#fff;font-size:clamp(24px,3vw,34px);line-height:1.25}
.cta-band p{color:rgba(255,255,255,.74);font-size:15px;line-height:1.85;margin-top:14px;max-width:520px}
.cta-actions{display:flex;flex-direction:column;align-items:flex-start;gap:12px}
.cta-actions .hint{font-size:13px;color:rgba(255,255,255,.6)}

/* ============ footer ============ */
.site-footer{background:var(--ink);color:#B9BCC4;padding:clamp(48px,6vw,76px) 0 26px;margin-top:clamp(56px,7vw,96px)}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:16px;letter-spacing:-.01em}
.footer-brand .brand-mark{background:#fff}
.footer-brand .brand-mark::after{background:var(--lime-deep)}
.footer-about p{margin-top:16px;font-size:14px;line-height:1.85;color:#A7AAB3;max-width:340px}
.footer-col h4{font-size:13px;letter-spacing:.08em;color:#fff;font-weight:600;margin-bottom:10px}
.footer-col a{display:block;font-size:14px;color:#B9BCC4;padding:6px 0;transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--lime);text-decoration:underline;text-underline-offset:4px}
.footer-bottom{
  margin-top:38px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:#8E929C;line-height:1.8;
}

/* ============ back to top ============ */
.back-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  background:var(--ink);color:var(--lime);border:1px solid rgba(200,241,105,.28);
  display:grid;place-items:center;z-index:110;cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .26s var(--ease),transform .26s var(--ease),visibility .26s var(--ease),background .2s var(--ease);
}
.back-top.is-visible{opacity:1;visibility:visible;transform:none}
.back-top:hover{background:var(--ink-2)}
.back-top svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* ============ reveal ============ */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ============ responsive ============ */
@media (max-width:1199px){
  .narrative-grid{grid-template-columns:1fr;gap:32px}
  .narrative-media{aspect-ratio:16/9}
  .contact-grid{grid-template-columns:1.4fr 1fr}
  .faq-grid{grid-template-columns:1fr 1.5fr}
}
@media (max-width:991px){
  .nav-menu{display:none}
  .nav-actions .btn-lime{display:none}
  .nav-toggle{display:block}
  .nav-pill{padding:8px;gap:8px}
  .brand{padding-left:10px}
  .device-grid{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr}
  .faq-grid{grid-template-columns:1fr;gap:28px}
  .cta-band{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.8}
  .wrap{padding-left:16px;padding-right:16px}
  .page-hero{min-height:clamp(230px,52vw,300px)}
  .page-hero::before{background:rgba(21,23,28,.72)}
  .hero-shell{padding-top:12px}
  .device-grid{grid-template-columns:1fr}
  .field-grid{grid-template-columns:1fr}
  .form-foot .btn-ink{width:100%}
  .cta-actions{width:100%}
  .cta-actions .btn-lime{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .brand-text{font-size:13.5px}
  .step-list li{gap:14px}
  .accordion-button{font-size:16px;padding-right:46px}
  .accordion-body{padding-right:8px}
  .back-top{right:16px;bottom:16px}
}
@media (max-width:520px){
  .brand-text{max-width:150px;overflow:hidden;text-overflow:ellipsis}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}