/* roulang page: index */
:root{
  --paper:#F5F3EE;
  --white:#FFFFFF;
  --ink:#14161A;
  --sub:#5A5F68;
  --muted:#8A8E96;
  --line:#E2DDD3;
  --accent:#00B383;
  --accent-soft:rgba(0,179,131,.10);
  --warm:#FF6A3D;
  --r-card:10px;
  --r-btn:6px;
  --r-img:12px;
  --r-badge:4px;
  --shadow-1:0 1px 2px rgba(20,22,26,.06);
  --shadow-2:0 10px 28px -14px rgba(20,22,26,.22);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:240ms var(--ease);
  --maxw:1200px;
  --gutter:40px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--ink);text-decoration:none;transition:color var(--t),background-color var(--t),border-color var(--t);}
a:hover{color:var(--accent);}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-0.02em;line-height:1.18;}
h1{font-size:clamp(40px,5vw,72px);line-height:1.06;letter-spacing:-0.03em;}
h2{font-size:clamp(26px,3vw,44px);line-height:1.15;}
h3{font-size:22px;font-weight:600;line-height:1.35;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:3px;}
::selection{background:var(--accent);color:#fff;}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter);}
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:48px;}
.section-head .eyebrow{margin-bottom:14px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;font-weight:600;color:var(--accent);
  text-transform:none;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--accent);display:block;border-radius:2px;}
.lead{color:var(--sub);font-size:17px;line-height:1.85;max-width:64ch;}
.muted{color:var(--muted);}
.small{font-size:13px;letter-spacing:.04em;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;
  transition:background-color var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
  white-space:nowrap;
}
.btn-primary{background:var(--ink);color:#fff;border-color:var(--ink);}
.btn-primary:hover{background:var(--accent);border-color:var(--accent);color:var(--ink);transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(0) scale(.995);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--ink);background:var(--white);color:var(--ink);}
.btn-accent{background:var(--accent);color:#062B22;border-color:var(--accent);}
.btn-accent:hover{background:#fff;color:var(--ink);border-color:#fff;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}

.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--ink);}
.link-arrow span.arrow{transition:transform var(--t);}
.link-arrow:hover{color:var(--accent);}
.link-arrow:hover span.arrow{transform:translateX(4px);}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  display:flex;align-items:center;gap:28px;
  height:68px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:28px;height:28px;border-radius:6px;background:var(--ink);
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.brand-mark svg{display:block;}
.brand-text{
  font-size:15px;font-weight:700;letter-spacing:-0.01em;line-height:1.2;color:var(--ink);
  max-width:9em;
}
.brand-text b{color:var(--accent);font-weight:700;}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:8px;}
.nav-links a{
  position:relative;font-size:14.5px;font-weight:500;color:var(--sub);
  padding:22px 0;line-height:1.2;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:16px;height:2px;
  background:var(--ink);transform:scaleX(0);transform-origin:left;
  transition:transform var(--t);
}
.nav-links a:hover{color:var(--ink);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--ink);font-weight:600;}
.nav-links a.is-active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-search{
  display:flex;align-items:center;gap:8px;
  background:var(--paper);border:1px solid transparent;border-radius:8px;
  height:40px;padding:0 12px;width:196px;
  transition:border-color var(--t),box-shadow var(--t),background-color var(--t);
}
.nav-search svg{flex-shrink:0;color:var(--muted);}
.nav-search input{
  border:0;background:transparent;outline:none;width:100%;
  font-size:13.5px;color:var(--ink);height:100%;
}
.nav-search input::placeholder{color:var(--muted);}
.nav-search:focus-within{background:#fff;border-color:var(--ink);box-shadow:0 0 0 2px rgba(0,179,131,.25);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:8px;border:1px solid var(--line);
  align-items:center;justify-content:center;background:#fff;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

.drawer{
  position:fixed;inset:0;z-index:120;display:none;
}
.drawer.is-open{display:block;}
.drawer-mask{position:absolute;inset:0;background:rgba(20,22,26,.36);}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(88vw,360px);
  background:#fff;padding:24px 24px 32px;display:flex;flex-direction:column;gap:8px;
  box-shadow:-24px 0 60px -30px rgba(20,22,26,.4);
  animation:drawerIn 240ms var(--ease);
}
@keyframes drawerIn{from{transform:translateX(24px);opacity:.6;}to{transform:translateX(0);opacity:1;}}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;}
.drawer-close{width:40px;height:40px;border-radius:8px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:20px;color:var(--ink);}
.drawer-panel a.drawer-link{
  font-size:18px;font-weight:600;color:var(--ink);padding:14px 0;border-bottom:1px solid var(--line);
}
.drawer-panel a.drawer-link.is-active{color:var(--accent);}
.drawer-cta{margin-top:auto;display:flex;flex-direction:column;gap:12px;padding-top:24px;}

/* ---------- Hero ---------- */
.hero{padding:72px 0 0;background:var(--paper);}
.hero-grid{
  display:grid;grid-template-columns:minmax(0,55fr) minmax(0,45fr);
  gap:64px;align-items:center;
  padding-bottom:72px;
}
.hero-copy h1{margin:18px 0 22px;max-width:16ch;}
.hero-copy h1 em{font-style:normal;display:inline-block;}
.hero-sub{font-size:18px;color:var(--sub);max-width:34ch;margin-bottom:32px;line-height:1.8;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:36px;}
.hero-trust{
  display:flex;flex-wrap:wrap;align-items:center;gap:0;
  font-size:13.5px;color:var(--sub);
}
.hero-trust li{display:flex;align-items:center;}
.hero-trust li+li::before{
  content:"";width:1px;height:14px;background:var(--line);margin:0 16px;display:block;
}
.hero-figure{position:relative;}
.hero-figure .frame{
  position:relative;border-radius:var(--r-img);overflow:hidden;
  aspect-ratio:4/5;background:#EDEAE3;border:1px solid var(--line);
}
.hero-figure .frame img{width:100%;height:100%;object-fit:cover;}
.hero-figure .frame::after{
  content:"";position:absolute;inset:0;background:rgba(20,22,26,.08);pointer-events:none;
}
.hero-param{
  position:absolute;right:-18px;bottom:26px;
  width:226px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:16px 18px;box-shadow:var(--shadow-2);
}
.hero-param dl{margin:0;display:grid;gap:10px;}
.hero-param .row{display:flex;align-items:baseline;justify-content:space-between;gap:12px;}
.hero-param dt{font-size:12px;color:var(--muted);letter-spacing:.04em;}
.hero-param dd{margin:0;font-size:13.5px;font-weight:600;color:var(--ink);font-variant-numeric:tabular-nums;}

.platform-bar{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:var(--white);
}
.platform-bar ul{
  display:grid;grid-template-columns:repeat(4,1fr);
}
.platform-bar li{
  display:flex;align-items:center;gap:10px;
  padding:20px 0;font-size:14px;color:var(--sub);font-weight:500;
}
.platform-bar li+li{border-left:1px solid var(--line);padding-left:26px;}
.platform-bar li svg{color:var(--ink);flex-shrink:0;}
.platform-bar li b{color:var(--ink);font-weight:600;}

/* ---------- Steps ---------- */
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0;}
.step{
  position:relative;padding:32px 28px 8px 0;
}
.step+.step{padding-left:28px;border-left:1px solid var(--line);}
.step-num{
  font-size:56px;font-weight:700;line-height:1;color:transparent;
  -webkit-text-stroke:1px rgba(20,22,26,.28);
  letter-spacing:-0.04em;font-variant-numeric:tabular-nums;
  margin-bottom:18px;display:block;
}
.step h3{font-size:20px;margin-bottom:10px;}
.step p{font-size:15px;color:var(--sub);line-height:1.8;margin:0;}
.step .chip{margin-top:18px;}

/* ---------- Chips / badges ---------- */
.chip{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;letter-spacing:.08em;font-weight:600;
  padding:4px 9px;border-radius:var(--r-badge);
  background:var(--accent-soft);color:var(--accent);
}
.chip--ink{background:rgba(20,22,26,.06);color:var(--ink);}
.chip--warm{background:rgba(255,106,61,.12);color:#C13E13;}
.chip--line{background:transparent;border:1px solid var(--line);color:var(--sub);}

/* ---------- Proof ---------- */
.proof-top{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:44px;}
.proof-stat-line{display:flex;gap:36px;flex-wrap:wrap;}
.proof-stat-line .item b{
  display:block;font-size:26px;font-weight:700;letter-spacing:-0.02em;
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.proof-stat-line .item span{font-size:12.5px;color:var(--muted);letter-spacing:.04em;}

.proof-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
}
.proof-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);transition:transform var(--t),box-shadow var(--t),border-color var(--t);
  overflow:hidden;display:flex;flex-direction:column;
}
.proof-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(0,179,131,.4);}
.proof-card--wide{grid-column:span 2;}
.proof-media{aspect-ratio:16/10;overflow:hidden;background:#EDEAE3;}
.proof-media img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease);}
.proof-card:hover .proof-media img{transform:scale(1.03);}
.proof-body{padding:24px;display:flex;flex-direction:column;gap:14px;flex:1;}
.proof-body h3{font-size:19px;line-height:1.4;}
.proof-body p{font-size:14.5px;color:var(--sub);line-height:1.8;margin:0;}
.proof-metrics{display:flex;gap:28px;margin-top:auto;padding-top:6px;flex-wrap:wrap;}
.proof-metrics b{display:block;font-size:20px;font-variant-numeric:tabular-nums;letter-spacing:-0.01em;}
.proof-metrics span{font-size:12px;color:var(--muted);letter-spacing:.04em;}
.proof-mini{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;position:relative;box-shadow:var(--shadow-1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
  display:flex;flex-direction:column;gap:10px;
}
.proof-mini::before{
  content:"";position:absolute;left:24px;top:0;width:44px;height:2px;background:var(--accent);
}
.proof-mini:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(0,179,131,.4);}
.proof-mini h3{font-size:17px;}
.proof-mini p{font-size:14px;color:var(--sub);margin:0;line-height:1.8;}
.proof-mini .meta{font-size:12px;color:var(--muted);letter-spacing:.06em;margin-top:auto;}

/* ---------- News ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow-1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(0,179,131,.45);color:inherit;}
.news-card:active{transform:translateY(-1px) scale(.995);}
.news-card--lead{grid-column:span 2;}
.news-media{
  position:relative;aspect-ratio:16/9;overflow:hidden;background:#EDEAE3;
}
.news-media img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease);}
.news-card:hover .news-media img{transform:scale(1.03);}
.news-media .chip{position:absolute;left:14px;top:14px;background:#fff;color:var(--ink);}
.news-body{padding:22px 24px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-body h3{
  font-size:18px;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body p{
  font-size:14px;color:var(--sub);line-height:1.75;margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--muted);letter-spacing:.03em;
}
.news-foot .go{display:inline-flex;align-items:center;gap:6px;color:var(--ink);font-weight:600;font-size:13px;}
.news-card:hover .news-foot .go{color:var(--accent);}
.news-card:hover .news-foot .go span{transform:translateX(4px);}
.news-foot .go span{transition:transform var(--t);}
.news-empty{
  grid-column:1/-1;min-height:180px;border:1px dashed var(--line);border-radius:var(--r-card);
  background:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:12px;text-align:center;color:var(--sub);padding:24px;
}
.news-empty svg{color:var(--muted);}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:minmax(0,34fr) minmax(0,66fr);gap:64px;align-items:start;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;text-align:left;font-size:17px;font-weight:600;color:var(--ink);
  transition:color var(--t);
}
.faq-q:hover{color:var(--accent);}
.faq-q .plus{
  flex-shrink:0;width:24px;height:24px;position:relative;transition:transform var(--t);
}
.faq-q .plus::before,.faq-q .plus::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
}
.faq-q .plus::before{left:0;right:0;top:11px;height:2px;}
.faq-q .plus::after{top:0;bottom:0;left:11px;width:2px;}
.faq-item.is-open .faq-q{color:var(--accent);}
.faq-item.is-open .faq-q .plus{transform:rotate(45deg);}
.faq-a{overflow:hidden;height:0;transition:height 260ms var(--ease);}
.faq-a-inner{padding:0 0 24px;font-size:15px;color:var(--sub);line-height:1.85;max-width:60ch;}
.faq-side .note{
  margin-top:22px;font-size:14px;color:var(--sub);line-height:1.8;
  border-left:2px solid var(--accent);padding-left:16px;
}

/* ---------- CTA ---------- */
.cta-band{background:var(--ink);color:#fff;padding:88px 0;}
.cta-grid{display:grid;grid-template-columns:minmax(0,56fr) minmax(0,44fr);gap:64px;align-items:center;}
.cta-band h2{color:#fff;margin-bottom:16px;}
.cta-band p{color:rgba(255,255,255,.62);font-size:15.5px;line-height:1.85;max-width:40ch;}
.cta-points{display:grid;gap:12px;margin-top:26px;}
.cta-points li{
  position:relative;padding-left:18px;font-size:14.5px;color:rgba(255,255,255,.82);
}
.cta-points li::before{
  content:"";position:absolute;left:0;top:.62em;width:2px;height:14px;background:var(--accent);border-radius:2px;
}
.cta-points li em{font-style:normal;color:var(--warm);font-weight:700;margin-right:8px;font-variant-numeric:tabular-nums;}
.cta-form{
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-card);padding:28px;
}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;color:rgba(255,255,255,.6);margin-bottom:8px;letter-spacing:.04em;}
.field input{
  width:100%;height:48px;border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);
  padding:0 14px;font-size:15px;color:#fff;outline:none;
  transition:border-color var(--t),box-shadow var(--t),background-color var(--t);
}
.field input::placeholder{color:rgba(255,255,255,.35);}
.field input:focus{border-color:var(--accent);background:rgba(255,255,255,.1);box-shadow:0 0 0 2px rgba(0,179,131,.25);}
.cta-form .hint{font-size:12.5px;color:rgba(255,255,255,.45);margin-top:14px;line-height:1.7;}
.form-msg{font-size:13.5px;margin-top:12px;display:none;color:var(--accent);}
.form-msg.is-show{display:block;}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:72px 0 0;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:48px;
  padding-bottom:56px;
}
.site-footer .brand-text{color:#fff;}
.site-footer .brand-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.5);margin-top:18px;max-width:32ch;}
.footer-col h4{font-size:13px;letter-spacing:.12em;color:rgba(255,255,255,.42);margin-bottom:18px;font-weight:600;}
.footer-col ul{display:grid;gap:12px;}
.footer-col a{color:rgba(255,255,255,.78);font-size:14.5px;}
.footer-col a:hover{color:var(--accent);}
.footer-col address{font-style:normal;font-size:14.5px;line-height:1.9;color:rgba(255,255,255,.7);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  padding:24px 0 32px;font-size:13px;color:rgba(255,255,255,.42);
}
.to-top{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;
  color:rgba(255,255,255,.7);border:1px solid rgba(255,255,255,.18);
  border-radius:var(--r-btn);height:36px;padding:0 14px;
  transition:border-color var(--t),color var(--t),background-color var(--t);
}
.to-top:hover{color:var(--accent);border-color:var(--accent);}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 520ms var(--ease),transform 520ms var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- Responsive ---------- */
@media (max-width:1439px){
  .container{max-width:1240px;}
}
@media (max-width:1199px){
  :root{--gutter:32px;}
  .nav-links{gap:18px;}
  .nav-search{width:160px;}
  .hero-grid{gap:44px;}
  .hero-param{right:0;bottom:18px;width:206px;}
  .faq-wrap{gap:40px;}
  .cta-grid{gap:40px;}
}
@media (max-width:1023px){
  .nav-links,.nav-search{display:none;}
  .nav-toggle{display:flex;}
  .nav-right .btn-sm{display:none;}
  .hero{padding-top:48px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;padding-bottom:56px;}
  .hero-copy h1{max-width:100%;}
  .hero-figure .frame{aspect-ratio:16/10;}
  .hero-param{position:static;width:100%;margin-top:16px;box-shadow:var(--shadow-1);}
  .platform-bar ul{grid-template-columns:repeat(2,1fr);}
  .platform-bar li{padding:16px 0;}
  .platform-bar li:nth-child(3){border-left:0;padding-left:0;}
  .platform-bar li:nth-child(1),.platform-bar li:nth-child(2){border-bottom:1px solid var(--line);}
  .steps-grid{grid-template-columns:1fr;}
  .step{padding:28px 0;border-left:2px solid var(--line);padding-left:22px;}
  .step+.step{border-left:2px solid var(--line);padding-left:22px;}
  .step-num{font-size:40px;margin-bottom:12px;}
  .proof-grid{grid-template-columns:1fr 1fr;}
  .proof-card--wide{grid-column:span 2;}
  .news-grid{grid-template-columns:1fr 1fr;}
  .news-card--lead{grid-column:span 2;}
  .faq-wrap{grid-template-columns:1fr;}
  .cta-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .section{padding:72px 0;}
  .proof-top{flex-direction:column;align-items:flex-start;gap:20px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:36px;}
}
@media (max-width:767px){
  :root{--gutter:20px;}
  .section{padding:56px 0;}
  .cta-band{padding:56px 0;}
  .hero-sub{font-size:16px;}
  .hero-actions .btn{flex:1 1 100%;}
  .proof-grid{grid-template-columns:1fr;}
  .proof-card--wide{grid-column:span 1;}
  .news-grid{grid-template-columns:1fr;}
  .news-card--lead{grid-column:span 1;}
  .platform-bar ul{grid-template-columns:1fr;}
  .platform-bar li{border-left:0!important;padding-left:0!important;border-bottom:1px solid var(--line);}
  .platform-bar li:last-child{border-bottom:0;}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:40px;}
  .proof-stat-line{gap:24px;}
  .faq-q{font-size:16px;padding:18px 0;}
  .cta-form{padding:22px;}
  h3{font-size:19px;}
}
@media (max-width:480px){
  .hero-trust{flex-direction:column;align-items:flex-start;gap:8px;}
  .hero-trust li+li::before{display:none;}
  .brand-text{font-size:13.5px;max-width:7.5em;}
  .btn{height:46px;padding:0 18px;font-size:14.5px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --paper:#F5F3EE;
  --white:#FFFFFF;
  --ink:#14161A;
  --ink-2:#5A5F68;
  --ink-3:#8A8E96;
  --line:#E2DDD3;
  --line-soft:#DCD6CB;
  --mint:#00B383;
  --mint-soft:rgba(0,179,131,.25);
  --orange:#FF6A3D;
  --r-card:10px;
  --r-btn:6px;
  --r-img:12px;
  --r-badge:4px;
  --r-input:8px;
  --sh-1:0 1px 2px rgba(20,22,26,.06);
  --sh-2:0 10px 28px -14px rgba(20,22,26,.22);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:240ms;
  --h1:clamp(34px,4.4vw,58px);
  --h2:clamp(26px,3vw,44px);
  --h3:clamp(19px,2vw,23px);
  --body:16px;
  --gap:24px;
  --sec:96px;
  --pad-x:40px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:var(--body);
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  font-feature-settings:"tnum" 1;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--ink);text-decoration:none;text-underline-offset:3px;transition:color var(--t) var(--ease);}
a:hover{text-decoration:underline;text-decoration-thickness:2px;text-decoration-color:var(--mint);}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--mint);outline-offset:2px;border-radius:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--pad-x);}
@media (min-width:1440px){.container{max-width:1240px;}}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:28px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:28px;height:28px;border-radius:6px;background:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.brand-text{font-size:16px;font-weight:700;letter-spacing:-.01em;line-height:1.25;white-space:nowrap;}
.brand-text b{color:var(--mint);font-weight:700;}
.nav-links{display:flex;align-items:center;gap:24px;margin-left:8px;}
.nav-links a{
  position:relative;font-size:15px;color:var(--ink-2);padding:6px 0;white-space:nowrap;
}
.nav-links a:hover{color:var(--ink);text-decoration:none;}
.nav-links a.is-active{color:var(--ink);font-weight:600;}
.nav-links a.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--ink);border-radius:2px;
}
.header-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.search-box{
  display:flex;align-items:center;gap:8px;
  background:var(--paper);border-radius:var(--r-input);
  padding:0 12px;height:40px;border:1px solid transparent;
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.search-box:focus-within{border-color:var(--ink);box-shadow:0 0 0 2px var(--mint-soft);}
.search-box input{border:0;background:transparent;outline:none;width:132px;font-size:14px;color:var(--ink);}
.search-box input::placeholder{color:var(--ink-3);}
.search-box svg{flex:0 0 auto;opacity:.55;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);font-size:15px;font-weight:600;line-height:1;
  padding:13px 22px;border:1px solid transparent;
  transition:background-color var(--t) var(--ease),color var(--t) var(--ease),border-color var(--t) var(--ease),transform var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--ink);color:#fff;}
.btn-primary:hover{background:var(--mint);color:var(--ink);box-shadow:var(--sh-2);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#fff;}
.btn-light{background:#fff;color:var(--ink);}
.btn-light:hover{background:var(--mint);color:var(--ink);}
.btn:active{transform:scale(.995);}
.nav-cta{padding:11px 18px;font-size:14px;}
.burger{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--r-btn);
  align-items:center;justify-content:center;background:#fff;
}
.burger span{display:block;width:18px;height:2px;background:var(--ink);position:relative;}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
}
.burger span::before{top:-6px;}
.burger span::after{top:6px;}
.drawer{
  position:fixed;inset:0;z-index:200;background:#fff;
  transform:translateX(100%);transition:transform 300ms var(--ease);
  padding:20px var(--pad-x) 32px;display:flex;flex-direction:column;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:48px;}
.drawer-close{width:40px;height:40px;border:1px solid var(--line);border-radius:var(--r-btn);font-size:20px;line-height:1;display:flex;align-items:center;justify-content:center;}
.drawer nav{display:flex;flex-direction:column;margin-top:20px;}
.drawer nav a{
  font-size:18px;font-weight:600;padding:16px 0;border-bottom:1px solid var(--line);color:var(--ink);
}
.drawer nav a:hover{text-decoration:none;color:var(--mint);}
.drawer-foot{margin-top:auto;padding-top:28px;display:flex;flex-direction:column;gap:12px;}
.drawer-foot .btn{width:100%;}
@media (max-width:1023px){
  .nav-links,.search-box{display:none;}
  .burger{display:flex;}
  .nav-cta{display:none;}
  .header-inner{height:60px;}
  .brand-text{font-size:14px;white-space:normal;line-height:1.2;max-width:170px;}
  .brand-text b{display:inline;}
  :root{--pad-x:32px;--sec:72px;}
}
@media (max-width:600px){
  :root{--pad-x:20px;--sec:56px;}
  .brand-text{font-size:13px;max-width:150px;}
}

/* ============ 阅读进度 ============ */
.progress-rail{position:fixed;top:0;left:0;right:0;height:2px;z-index:120;background:transparent;pointer-events:none;}
.progress-bar{display:block;height:100%;width:0;background:var(--mint);transition:width 90ms linear;}

/* ============ 文章头部 ============ */
.article-head{padding:44px 0 36px;border-bottom:1px solid var(--line);}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:22px;}
.breadcrumb a{color:var(--ink-2);}
.breadcrumb a:hover{color:var(--mint);text-decoration:none;}
.breadcrumb .sep{color:var(--line-soft);}
.breadcrumb .current{color:var(--ink-3);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-title{
  font-size:var(--h1);line-height:1.12;font-weight:700;letter-spacing:-.03em;
  max-width:900px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;margin-top:24px;font-size:13px;color:var(--ink-2);}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;
  border-radius:var(--r-badge);background:rgba(0,179,131,.1);color:#00795A;
  font-size:12px;letter-spacing:.06em;font-weight:600;
}
.meta-dot{width:3px;height:3px;border-radius:50%;background:var(--line-soft);}
.article-lead{
  margin-top:22px;max-width:760px;font-size:17px;line-height:1.9;color:var(--ink-2);
}

/* ============ 正文布局 ============ */
.article-main{padding:var(--sec) 0;}
.article-layout{
  display:grid;grid-template-columns:minmax(0,760px);justify-content:center;gap:64px;
}
@media (min-width:1200px){
  .article-layout{grid-template-columns:minmax(0,760px) 236px;justify-content:space-between;}
}
.article-body{font-size:17px;line-height:1.9;color:var(--ink);min-width:0;}
.article-body > * + *{margin-top:1.2em;}
.article-body h2{
  font-size:clamp(23px,2.4vw,30px);line-height:1.3;font-weight:700;letter-spacing:-.02em;
  margin-top:2.2em;padding-top:.2em;scroll-margin-top:96px;
}
.article-body h3{
  font-size:var(--h3);line-height:1.45;font-weight:600;margin-top:1.8em;scroll-margin-top:96px;
}
.article-body h2 + p,.article-body h3 + p{margin-top:.9em;}
.article-body p{color:#22252B;}
.article-body strong{font-weight:700;color:var(--ink);}
.article-body a{color:#00795A;text-decoration:underline;text-decoration-color:rgba(0,179,131,.45);}
.article-body a:hover{text-decoration-color:var(--mint);}
.article-body ul,.article-body ol{margin-top:1em;padding-left:0;}
.article-body ul li,.article-body ol li{position:relative;padding-left:22px;margin-top:.6em;color:#22252B;}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.78em;width:6px;height:6px;border-radius:2px;background:var(--mint);
}
.article-body ol{counter-reset:art;}
.article-body ol li{counter-increment:art;}
.article-body ol li::before{
  content:counter(art,decimal-leading-zero);
  position:absolute;left:0;top:.1em;font-size:13px;font-weight:700;color:var(--mint);
}
.article-body blockquote{
  border-left:2px solid var(--mint);padding:4px 0 4px 20px;color:var(--ink-2);font-size:17px;
}
.article-body figure{margin-top:1.6em;}
.article-body img{border-radius:var(--r-img);width:100%;object-fit:cover;box-shadow:var(--sh-1);}
.article-body figcaption{font-size:13px;color:var(--ink-3);margin-top:10px;line-height:1.7;}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;}
.article-body th,.article-body td{border-bottom:1px solid var(--line);padding:12px 10px;text-align:left;}
.article-body th{background:rgba(255,255,255,.7);font-weight:600;}

/* ============ 目录 ============ */
.toc{display:none;align-self:start;position:sticky;top:100px;font-size:13px;}
@media (min-width:1200px){.toc{display:block;}}
.toc-title{font-size:12px;letter-spacing:.12em;color:var(--ink-3);margin-bottom:14px;font-weight:600;}
.toc-list{border-left:1px solid var(--line);display:flex;flex-direction:column;}
.toc-list a{
  display:block;padding:8px 0 8px 16px;margin-left:-1px;border-left:2px solid transparent;
  color:var(--ink-2);line-height:1.55;transition:color var(--t) var(--ease),border-color var(--t) var(--ease);
}
.toc-list a:hover{color:var(--ink);text-decoration:none;}
.toc-list a.is-current{color:var(--mint);border-left-color:var(--mint);font-weight:600;}
.toc-list a.sub{padding-left:30px;font-size:12.5px;color:var(--ink-3);}

/* ============ 空态 ============ */
.empty-state{
  min-height:200px;border:1px dashed var(--line-soft);border-radius:var(--r-card);
  background:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:12px;text-align:center;padding:36px 24px;
}
.empty-state svg{opacity:.35;}
.empty-state p{color:var(--ink-2);font-size:15px;}
.empty-state .btn{margin-top:6px;}

/* ============ 相关推荐 ============ */
.related{padding:0 0 var(--sec);}
.related-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;}
.related-head h2{font-size:var(--h2);line-height:1.15;letter-spacing:-.02em;font-weight:700;}
.text-link{font-size:14px;color:var(--ink-2);display:inline-flex;align-items:center;gap:6px;}
.text-link:hover{color:var(--mint);text-decoration:none;}
.text-link svg{transition:transform var(--t) var(--ease);}
.text-link:hover svg{transform:translateX(4px);}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);}
@media (max-width:1023px){.card-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:600px){.card-grid{grid-template-columns:1fr;}}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(0,179,131,.3);}
.card:active{transform:scale(.995);}
.card-thumb{position:relative;aspect-ratio:16/9;background:var(--paper);overflow:hidden;}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 400ms var(--ease);}
.card:hover .card-thumb img{transform:scale(1.03);}
.card-badge{
  position:absolute;left:12px;top:12px;background:#fff;color:var(--ink);
  font-size:12px;padding:3px 8px;border-radius:var(--r-badge);letter-spacing:.05em;
}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-title{font-size:17px;font-weight:600;line-height:1.5;letter-spacing:-.01em;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-desc{font-size:14px;color:var(--ink-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-foot{margin-top:auto;padding-top:12px;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--ink-3);}
.card-foot svg{transition:transform var(--t) var(--ease);}
.card:hover .card-foot svg{transform:translateX(4px);color:var(--mint);}

/* ============ 返回条 ============ */
.back-bar{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:22px 0;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
}
.back-bar p{font-size:14px;color:var(--ink-2);}

/* ============ CTA ============ */
.cta-band{background:var(--ink);color:#fff;padding:88px 0;}
.cta-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;}
@media (max-width:900px){.cta-inner{grid-template-columns:1fr;gap:32px;}}
.cta-band h2{font-size:var(--h2);line-height:1.18;letter-spacing:-.02em;color:#fff;font-weight:700;}
.cta-points{margin-top:24px;display:flex;flex-direction:column;gap:12px;}
.cta-points li{position:relative;padding-left:18px;color:rgba(255,255,255,.78);font-size:15px;}
.cta-points li::before{content:"";position:absolute;left:0;top:.72em;width:2px;height:14px;background:var(--mint);}
.cta-actions{display:flex;flex-direction:column;gap:14px;align-items:flex-start;}
.cta-actions .btn{width:100%;max-width:300px;justify-content:center;}
.cta-note{font-size:13px;color:rgba(255,255,255,.5);line-height:1.7;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:#fff;padding:72px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
@media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px;}}
@media (max-width:600px){.footer-grid{grid-template-columns:1fr;}}
.site-footer .brand-text{color:#fff;font-size:15px;}
.site-footer .brand-text b{color:var(--mint);}
.site-footer .brand-mark{background:#fff;}
.brand-desc{margin-top:16px;font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.55);max-width:320px;}
.footer-col h4{font-size:13px;letter-spacing:.1em;color:rgba(255,255,255,.45);font-weight:600;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col ul a{color:rgba(255,255,255,.78);font-size:14px;}
.footer-col ul a:hover{color:var(--mint);text-decoration:none;}
.footer-col address{font-style:normal;font-size:13.5px;line-height:2;color:rgba(255,255,255,.6);}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:12.5px;color:rgba(255,255,255,.45);
}
.to-top{color:rgba(255,255,255,.6);}
.to-top:hover{color:var(--mint);text-decoration:none;}

/* ============ 进入动画 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 520ms var(--ease),transform 520ms var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
}

/* roulang page: category1 */
:root{
  --paper:#F5F3EE;
  --white:#FFFFFF;
  --ink:#14161A;
  --ink-2:#5A5F68;
  --ink-3:#8A8E96;
  --line:#E2DDD3;
  --accent:#00B383;
  --warm:#FF6A3D;
  --radius-card:10px;
  --radius-btn:6px;
  --radius-img:12px;
  --radius-badge:4px;
  --shadow:0 1px 2px rgba(20,22,26,.06);
  --shadow-hover:0 10px 28px -14px rgba(20,22,26,.22);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:240ms;
  --section:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto;object-fit:cover;}
a{color:var(--ink);text-decoration:none;transition:color var(--dur) var(--ease);}
p{margin:0 0 1.2em;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 40px;
}
@media (min-width:1440px){
  .container{max-width:1240px;}
  :root{--section:104px;}
}
@media (max-width:1023px){
  .container{padding:0 32px;}
  :root{--section:72px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  :root{--section:56px;}
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:68px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:28px;
  height:28px;
  border-radius:6px;
  background:var(--ink);
  display:grid;
  place-items:center;
  flex-shrink:0;
}
.brand-text{
  font-size:15px;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--ink);
  white-space:nowrap;
  line-height:1.25;
}
.brand-text b{color:var(--accent);font-weight:700;}
.nav-links{
  display:flex;
  align-items:center;
  gap:28px;
  margin-left:8px;
}
.nav-links a{
  position:relative;
  padding:6px 0;
  font-size:15px;
  color:var(--ink-2);
}
.nav-links a:hover{color:var(--ink);}
.nav-links a.is-active{color:var(--ink);font-weight:600;}
.nav-links a.is-active::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-8px;
  height:2px;
  background:var(--ink);
}
.header-actions{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:12px;
}
.search-box{position:relative;display:flex;align-items:center;}
.search-box input{
  width:196px;
  height:38px;
  border:1px solid transparent;
  border-radius:8px;
  background:var(--paper);
  padding:0 14px;
  font-size:14px;
  color:var(--ink);
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease);
}
.search-box input::placeholder{color:var(--ink-3);}
.search-box input:focus{
  outline:none;
  background:var(--white);
  border-color:var(--ink);
  box-shadow:0 0 0 2px rgba(0,179,131,.25);
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 20px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  letter-spacing:0;
  border:1px solid transparent;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.btn-primary{
  background:var(--ink);
  color:#fff;
  border-color:var(--ink);
}
.btn-primary:hover{
  background:var(--accent);
  border-color:var(--accent);
  color:var(--ink);
}
.btn-primary:active{transform:scale(.995);}
.btn-ghost{
  background:transparent;
  color:var(--ink);
  border-color:var(--line);
}
.btn-ghost:hover{border-color:var(--ink);background:var(--white);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.menu-toggle{
  display:none;
  width:40px;
  height:40px;
  border-radius:var(--radius-btn);
  border:1px solid var(--line);
  background:var(--white);
  place-items:center;
}
.menu-toggle span{
  display:block;
  width:18px;
  height:2px;
  background:var(--ink);
  position:relative;
}
.menu-toggle span::before,
.menu-toggle span::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:2px;
  background:var(--ink);
}
.menu-toggle span::before{top:-6px;}
.menu-toggle span::after{top:6px;}

/* 抽屉 */
.drawer{
  position:fixed;
  inset:0 0 0 auto;
  width:min(86vw,360px);
  background:var(--white);
  z-index:120;
  transform:translateX(100%);
  transition:transform 300ms var(--ease);
  display:flex;
  flex-direction:column;
  padding:24px 24px 32px;
  box-shadow:-20px 0 40px -30px rgba(20,22,26,.4);
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:16px;
  border-bottom:1px solid var(--line);
}
.drawer-head span{font-size:13px;letter-spacing:.08em;color:var(--ink-3);}
.drawer-close{
  width:36px;height:36px;
  border-radius:var(--radius-btn);
  border:1px solid var(--line);
  font-size:20px;
  line-height:1;
  display:grid;
  place-items:center;
}
.drawer-nav{display:grid;gap:4px;margin-top:20px;}
.drawer-nav a{
  font-size:18px;
  padding:12px 0;
  border-bottom:1px solid var(--line);
  color:var(--ink-2);
  font-weight:500;
}
.drawer-nav a.is-active{color:var(--ink);font-weight:700;}
.drawer-cta{margin-top:28px;width:100%;height:48px;}
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(20,22,26,.42);
  z-index:110;
  opacity:0;
  visibility:hidden;
  transition:opacity 300ms var(--ease),visibility 300ms var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
body.no-scroll{overflow:hidden;}

/* ============ 页头 ============ */
.page-hero{
  padding:64px 0 0;
  background:
    linear-gradient(180deg,rgba(255,255,255,.72),rgba(245,243,238,0)),
    radial-gradient(900px 320px at 88% -20%,rgba(0,179,131,.10),transparent 70%);
  border-bottom:1px solid var(--line);
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--ink-2);
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-badge);
  padding:5px 10px;
}
.eyebrow i{
  width:6px;height:6px;border-radius:50%;
  background:var(--accent);
  display:block;
}
.page-hero h1{
  margin:22px 0 20px;
  font-size:clamp(34px,4.4vw,58px);
  line-height:1.1;
  letter-spacing:-.03em;
  max-width:16em;
}
.page-hero h1 em{
  font-style:normal;
  color:var(--ink);
  box-shadow:inset 0 -.28em 0 rgba(0,179,131,.24);
}
.hero-lead{
  font-size:17px;
  color:var(--ink-2);
  max-width:44em;
  margin:0 0 8px;
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px 28px;
  margin:22px 0 0;
  font-size:13px;
  color:var(--ink-3);
}
.hero-meta span{display:inline-flex;align-items:center;gap:8px;}
.hero-meta span::before{
  content:"";
  width:14px;height:1px;
  background:var(--ink-3);
  display:block;
}
.anchor-bar{
  display:flex;
  gap:28px;
  overflow-x:auto;
  margin-top:40px;
  padding-bottom:0;
  scrollbar-width:none;
}
.anchor-bar::-webkit-scrollbar{display:none;}
.anchor-bar a{
  position:relative;
  flex:0 0 auto;
  font-size:14px;
  color:var(--ink-2);
  padding:14px 0 16px;
  white-space:nowrap;
}
.anchor-bar a:hover{color:var(--ink);}
.anchor-bar a.is-current{
  color:var(--ink);
  font-weight:600;
}
.anchor-bar a.is-current::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--ink);
}

/* ============ 通用板块 ============ */
.section{padding:var(--section) 0;}
.section-tight{padding:calc(var(--section) * .7) 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:44px;
}
.section-head h2{
  font-size:clamp(26px,3vw,40px);
  line-height:1.15;
  letter-spacing:-.025em;
  max-width:20em;
}
.section-head p{
  margin:14px 0 0;
  color:var(--ink-2);
  font-size:15px;
  max-width:40em;
}
.section-tip{
  flex:0 0 auto;
  font-size:13px;
  color:var(--ink-3);
  text-align:right;
  line-height:1.7;
}

/* ============ 八步流程列表 ============ */
.step-list{
  border-top:1px solid var(--line);
  background:var(--white);
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  overflow:hidden;
  box-shadow:var(--shadow);
}
.step-row{
  display:grid;
  grid-template-columns:56px 1fr 28px;
  gap:24px;
  align-items:center;
  padding:24px 28px;
  border-bottom:1px solid var(--line);
  transition:background var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.step-row:last-child{border-bottom:0;}
.step-row:hover{background:#FBF9F4;}
.step-row:hover .step-arrow{transform:translateX(4px);color:var(--accent);}
.step-num{
  font-size:13px;
  letter-spacing:.08em;
  color:var(--accent);
  font-variant-numeric:tabular-nums;
  font-weight:600;
}
.step-body h3{
  font-size:20px;
  font-weight:600;
  letter-spacing:-.01em;
  margin-bottom:4px;
}
.step-body p{
  margin:0;
  font-size:15px;
  color:var(--ink-2);
  line-height:1.75;
}
.step-arrow{
  font-size:18px;
  color:var(--ink-3);
  transition:transform var(--dur) var(--ease),color var(--dur) var(--ease);
  justify-self:end;
}

/* ============ 终端适配 ============ */
.device-grid{
  display:grid;
  grid-template-columns:1.05fr 1fr;
  gap:56px;
  align-items:center;
}
.figure{
  border-radius:var(--radius-img);
  overflow:hidden;
  background:var(--white);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.figure img{
  width:100%;
  aspect-ratio:16/11;
  object-fit:cover;
  background:var(--paper);
}
.figure figcaption{
  font-size:13px;
  color:var(--ink-3);
  padding:12px 16px;
  border-top:1px solid var(--line);
}
.device-list{display:grid;gap:0;margin-top:8px;}
.device-item{
  padding:18px 0;
  border-top:1px solid var(--line);
}
.device-item:last-child{border-bottom:1px solid var(--line);}
.device-item h3{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:600;
  margin-bottom:4px;
}
.tag{
  display:inline-block;
  font-size:12px;
  letter-spacing:.06em;
  color:var(--ink-2);
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius-badge);
  padding:1px 8px;
  line-height:1.7;
}
.tag-accent{color:#0A7D5F;background:rgba(0,179,131,.10);border-color:rgba(0,179,131,.28);}
.tag-warm{color:#C2441D;background:rgba(255,106,61,.10);border-color:rgba(255,106,61,.3);}
.device-item p{margin:0;font-size:15px;color:var(--ink-2);}

/* ============ FAQ ============ */
.faq-wrap{
  display:grid;
  grid-template-columns:.82fr 1.18fr;
  gap:56px;
  align-items:start;
}
.faq-intro h2{
  font-size:clamp(26px,3vw,40px);
  line-height:1.15;
  letter-spacing:-.025em;
}
.faq-intro p{
  margin:16px 0 0;
  color:var(--ink-2);
  font-size:15px;
  max-width:26em;
}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  text-align:left;
  padding:22px 0;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  transition:color var(--dur) var(--ease);
}
.faq-q:hover{color:#0A7D5F;}
.faq-icon{
  flex:0 0 auto;
  width:24px;height:24px;
  position:relative;
  transition:transform 260ms var(--ease);
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--ink);
  left:50%;top:50%;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:1.6px;}
.faq-icon::after{width:1.6px;height:14px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-a{
  overflow:hidden;
  max-height:0;
  transition:max-height 260ms var(--ease);
}
.faq-a p{
  margin:0;
  padding:0 0 22px;
  font-size:15px;
  color:var(--ink-2);
  max-width:44em;
}

/* ============ CTA 细线条 ============ */
.cta-line{
  border-top:1px solid var(--line);
  padding:44px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-line h2{
  font-size:clamp(20px,2.2vw,26px);
  letter-spacing:-.02em;
}
.cta-line p{
  margin:6px 0 0;
  font-size:15px;
  color:var(--ink-2);
}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink);
  color:#fff;
  padding:72px 0 32px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  margin-bottom:16px;
  color:#fff;
}
.footer-col ul{display:grid;gap:10px;}
.footer-col ul a{
  font-size:14px;
  color:var(--ink-3);
}
.footer-col ul a:hover{color:#fff;}
.brand-desc{
  margin:16px 0 0;
  font-size:14px;
  color:var(--ink-3);
  max-width:300px;
  line-height:1.8;
}
.site-footer .brand-text{color:#fff;}
.site-footer .brand-text b{color:var(--accent);}
address{
  font-style:normal;
  font-size:14px;
  color:var(--ink-3);
  line-height:2;
}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  margin-top:48px;
  padding-top:24px;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;
  color:var(--ink-3);
}
.to-top{
  color:#fff;
  font-size:13px;
  border-bottom:1px solid transparent;
}
.to-top:hover{border-bottom-color:var(--accent);color:var(--accent);}

/* ============ 动效 ============ */
.reveal{
  opacity:0;
  transform:translateY(12px);
}
.reveal.is-in{
  opacity:1;
  transform:none;
  transition:opacity 520ms var(--ease),transform 520ms var(--ease);
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .nav-links{gap:22px;}
  .search-box input{width:168px;}
  .device-grid{gap:40px;}
  .faq-wrap{gap:40px;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .search-box{display:none;}
  .menu-toggle{display:grid;}
  .header-inner{height:64px;gap:16px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .page-hero{padding-top:48px;}
  .device-grid{grid-template-columns:1fr;gap:32px;}
  .faq-wrap{grid-template-columns:1fr;gap:32px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px;}
  .section-tip{text-align:left;}
}
@media (max-width:767px){
  .header-inner{height:60px;}
  .brand-text{font-size:14px;}
  .btn-header{display:none;}
  .step-row{
    grid-template-columns:40px 1fr;
    gap:14px;
    padding:20px 18px;
  }
  .step-arrow{display:none;}
  .step-body h3{font-size:17px;}
  .step-body p{font-size:14px;}
  .hero-meta{gap:8px 18px;font-size:12px;}
  .anchor-bar{gap:20px;margin-top:28px;}
  .anchor-bar a{font-size:13px;}
  .cta-line{flex-direction:column;align-items:flex-start;gap:20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:480px){
  .brand-text{
    font-size:13px;
    line-height:1.3;
    white-space:normal;
    max-width:132px;
  }
  .page-hero h1{font-size:clamp(26px,7.4vw,34px);}
  .hero-lead{font-size:15px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
}

/* roulang page: category2 */
:root{
  --paper:#F5F3EE;
  --white:#FFFFFF;
  --ink:#14161A;
  --sub:#5A5F68;
  --muted:#8A8E96;
  --line:#E2DDD3;
  --green:#00B383;
  --orange:#FF6A3D;
  --r-card:10px;
  --r-btn:6px;
  --r-img:12px;
  --r-badge:4px;
  --sh-1:0 1px 2px rgba(20,22,26,.06);
  --sh-2:0 10px 28px -14px rgba(20,22,26,.22);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:240ms;
  --pad-x:40px;
  --sec-y:96px;
  --header-h:68px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:var(--ink);text-decoration:none;transition:color var(--dur) var(--ease)}
a:hover{color:var(--green)}
p{margin:0 0 1.2em}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-0.02em}
h1{font-size:clamp(40px,5vw,72px);line-height:1.06;letter-spacing:-0.03em;font-weight:700}
h2{font-size:clamp(26px,3vw,44px);line-height:1.15;font-weight:700}
h3{font-size:22px;line-height:1.4;font-weight:600}
button{font-family:inherit;cursor:pointer}
input{font-family:inherit}
:focus-visible{outline:2px solid var(--green);outline-offset:2px;border-radius:3px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--pad-x)}
@media(min-width:1440px){
  .container{max-width:1240px}
}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;text-decoration:none;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn-primary:hover{background:var(--green);border-color:var(--green);color:var(--ink);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0) scale(.995)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--ink);color:var(--ink);background:rgba(20,22,26,.03)}
.btn-light{background:#fff;color:var(--ink);border-color:#fff}
.btn-light:hover{background:var(--green);border-color:var(--green);color:var(--ink)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.32)}
.btn-outline-light:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.08)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(8px);
  -webkit-backdrop-filter:saturate(180%) blur(8px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  height:var(--header-h);
  display:flex;align-items:center;gap:32px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none}
.brand-mark{
  width:28px;height:28px;flex:0 0 28px;border-radius:6px;background:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;
}
.brand-text{
  font-size:16px;font-weight:700;letter-spacing:-0.01em;color:var(--ink);
  line-height:1.2;white-space:nowrap;
}
.brand-text b{color:var(--green);font-weight:700}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:8px}
.nav-links a{
  position:relative;font-size:15px;color:var(--sub);font-weight:500;
  padding:6px 0;line-height:1.4;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--ink);transform:scaleX(0);transform-origin:left;
  transition:transform var(--dur) var(--ease);
}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after{transform:scaleX(1);background:var(--green)}
.nav-links a.is-active{color:var(--ink);font-weight:600}
.nav-links a.is-active::after{transform:scaleX(1)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:14px}
.search{
  display:flex;align-items:center;
  background:var(--paper);border:1px solid transparent;border-radius:8px;
  height:40px;padding:0 12px;width:210px;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease);
}
.search:focus-within{background:#fff;border-color:var(--ink);box-shadow:0 0 0 2px rgba(0,179,131,.25)}
.search svg{flex:0 0 auto;margin-right:8px;opacity:.55}
.search input{
  border:0;background:transparent;outline:none;width:100%;
  font-size:14px;color:var(--ink);line-height:1.4;
}
.search input::placeholder{color:var(--muted)}
.menu-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line);background:#fff;
  border-radius:8px;align-items:center;justify-content:center;
  transition:border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.menu-toggle:hover{border-color:var(--ink)}
.menu-toggle span{
  display:block;width:16px;height:2px;background:var(--ink);border-radius:2px;position:relative;
}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:var(--ink);border-radius:2px;
}
.menu-toggle span::before{top:-5px}
.menu-toggle span::after{top:5px}

/* ---------- 移动端抽屉 ---------- */
.backdrop{
  position:fixed;inset:0;background:rgba(20,22,26,.42);z-index:80;
  opacity:0;pointer-events:none;transition:opacity var(--dur) var(--ease);
}
.backdrop.is-open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(360px,86vw);z-index:90;
  background:#fff;transform:translateX(102%);
  transition:transform 280ms var(--ease);
  display:flex;flex-direction:column;
  box-shadow:-18px 0 40px -24px rgba(20,22,26,.4);
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 20px;border-bottom:1px solid var(--line);
}
.drawer-close{
  width:36px;height:36px;border:1px solid var(--line);background:#fff;border-radius:8px;
  font-size:18px;line-height:1;color:var(--ink);
}
.drawer-close:hover{border-color:var(--ink)}
.drawer-nav{padding:10px 20px;overflow-y:auto;flex:1}
.drawer-nav a{
  display:block;font-size:18px;font-weight:600;color:var(--ink);
  padding:16px 0;border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--green)}
.drawer-foot{padding:20px;border-top:1px solid var(--line)}
.drawer-foot .btn{width:100%}
.drawer-search{
  display:flex;align-items:center;background:var(--paper);border-radius:8px;
  height:44px;padding:0 12px;margin-bottom:14px;
}
.drawer-search input{border:0;background:transparent;outline:none;width:100%;font-size:15px}

/* ---------- 页头 ---------- */
.page-head{padding:72px 0 0;background:linear-gradient(180deg,#FFFFFF 0%,rgba(255,255,255,0) 100%)}
.page-head-inner{
  display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);
  gap:64px;align-items:end;padding-bottom:56px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;color:var(--sub);font-weight:600;
  text-transform:none;margin-bottom:22px;
}
.eyebrow::before{
  content:"";width:22px;height:2px;background:var(--green);display:inline-block;border-radius:2px;
}
.page-head h1{margin-bottom:20px}
.page-head-right p{color:var(--sub);font-size:16px;line-height:1.85;margin-bottom:24px}
.head-meta{display:flex;flex-wrap:wrap;gap:10px}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;color:var(--sub);background:#fff;
  border:1px solid var(--line);border-radius:var(--r-badge);padding:5px 10px;line-height:1.5;
}
.page-head-rule{height:1px;background:var(--line);width:100%}

/* ---------- 数据条 ---------- */
.stat-strip{border-bottom:1px solid var(--line);background:#fff}
.stat-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:24px;padding:30px 0;
}
.stat-item{display:flex;flex-direction:column;gap:2px;border-left:1px solid var(--line);padding-left:20px}
.stat-item:first-child{border-left:0;padding-left:0}
.stat-num{font-size:30px;font-weight:700;line-height:1.1;letter-spacing:-0.02em;font-variant-numeric:tabular-nums}
.stat-num small{font-size:14px;font-weight:600;color:var(--sub);margin-left:2px}
.stat-label{font-size:13px;color:var(--muted);letter-spacing:.02em}

/* ---------- 通用板块 ---------- */
.section{padding:var(--sec-y) 0}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:32px;
  margin-bottom:44px;
}
.section-head .side{max-width:400px;color:var(--sub);font-size:15.5px;line-height:1.8;margin:0}
.section-title{max-width:720px}
.section-title p{margin:14px 0 0;color:var(--sub);font-size:16px}

/* ---------- 场景卡网格 ---------- */
.scene-grid{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:32px;
}
.scene-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
  display:flex;flex-direction:column;
}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(0,179,131,.45)}
.scene-card:active{transform:translateY(-2px) scale(.995)}
.scene-media{
  position:relative;aspect-ratio:16/10;background:var(--paper);
  border-bottom:1px solid var(--line);overflow:hidden;
}
.scene-media img{
  width:100%;height:100%;object-fit:cover;
  transition:transform 420ms var(--ease);
}
.scene-card:hover .scene-media img{transform:scale(1.03)}
.scene-media::after{
  content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,22,26,.14),rgba(20,22,26,0) 46%);
  pointer-events:none;
}
.scene-index{
  position:absolute;top:14px;left:14px;z-index:2;
  font-size:12px;font-weight:700;letter-spacing:.1em;color:#fff;
  background:rgba(20,22,26,.72);border-radius:var(--r-badge);
  padding:4px 9px;line-height:1.5;font-variant-numeric:tabular-nums;
}
.scene-body{padding:26px 26px 28px;display:flex;flex-direction:column;gap:12px;flex:1}
.scene-tags{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-block;font-size:12px;line-height:1.6;letter-spacing:.04em;
  color:var(--sub);background:var(--paper);border:1px solid var(--line);
  border-radius:var(--r-badge);padding:3px 9px;
}
.tag-green{color:#00795A;background:rgba(0,179,131,.1);border-color:rgba(0,179,131,.28)}
.scene-title{font-size:22px;font-weight:600;line-height:1.45;letter-spacing:-0.01em}
.scene-note{color:var(--sub);font-size:15px;line-height:1.8;margin:0}
.scene-foot{
  margin-top:auto;padding-top:16px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--muted);letter-spacing:.02em;
}
.scene-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:13.5px;font-weight:600;color:var(--ink);
  transition:transform var(--dur) var(--ease),color var(--dur) var(--ease);
}
.scene-card:hover .scene-arrow{transform:translateX(4px);color:var(--green)}

/* ---------- 切换清单 ---------- */
.checklist-wrap{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:8px 32px;box-shadow:var(--sh-1);
}
.check-item{
  display:grid;grid-template-columns:64px minmax(0,1fr) auto;
  align-items:center;gap:20px;padding:24px 0;border-bottom:1px solid var(--line);
}
.check-item:last-child{border-bottom:0}
.check-num{
  font-size:13px;font-weight:700;letter-spacing:.12em;color:var(--green);
  font-variant-numeric:tabular-nums;
}
.check-title{font-size:18px;font-weight:600;line-height:1.5;margin:0 0 4px}
.check-desc{font-size:14.5px;color:var(--sub);line-height:1.75;margin:0}
.check-mark{
  width:26px;height:26px;border-radius:50%;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--green);flex:0 0 26px;
}

/* ---------- 使用反馈（深色） ---------- */
.voice{
  background:var(--ink);color:#fff;padding:var(--sec-y) 0;
}
.voice .section-title h2{color:#fff}
.voice .section-title p{color:rgba(255,255,255,.62)}
.voice-grid{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;
}
.voice-card{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-card);padding:28px 26px;
  display:flex;flex-direction:column;gap:16px;
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.voice-card:hover{background:rgba(255,255,255,.08);border-color:rgba(0,179,131,.5);transform:translateY(-2px)}
.voice-quote{font-size:16px;line-height:1.85;color:rgba(255,255,255,.9);margin:0}
.voice-quote::before{
  content:"";display:block;width:26px;height:2px;background:var(--green);margin-bottom:16px;border-radius:2px;
}
.voice-meta{
  margin-top:auto;padding-top:16px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:13px;color:rgba(255,255,255,.55);
}
.voice-meta .who{color:#fff;font-weight:600;font-size:14px}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.5fr);gap:56px;align-items:start}
.faq-aside p{color:var(--sub);font-size:15.5px;margin-top:16px}
.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;justify-content:space-between;gap:20px;
  background:transparent;border:0;padding:22px 0;text-align:left;
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.6;
  transition:color var(--dur) var(--ease);
}
.faq-btn:hover{color:var(--green)}
.faq-icon{
  position:relative;width:24px;height:24px;flex:0 0 24px;
  transition:transform 260ms var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;top:50%;left:50%;background:var(--ink);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-item.is-open .faq-btn{color:var(--ink)}
.faq-body{
  max-height:0;overflow:hidden;
  transition:max-height 260ms var(--ease),opacity 260ms var(--ease);
  opacity:0;
}
.faq-item.is-open .faq-body{opacity:1}
.faq-body-inner{padding:0 44px 24px 0;color:var(--sub);font-size:15.5px;line-height:1.85}
.faq-body-inner p:last-child{margin-bottom:0}

/* ---------- CTA 转化区 ---------- */
.cta-band{background:var(--ink);color:#fff;padding:88px 0}
.cta-inner{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,.9fr);gap:56px;align-items:center}
.cta-band h2{color:#fff;margin-bottom:18px}
.cta-band .lead{color:rgba(255,255,255,.66);font-size:16px;margin:0 0 26px;max-width:520px}
.cta-points{display:flex;flex-direction:column;gap:14px;margin:0}
.cta-points li{
  position:relative;padding-left:18px;color:rgba(255,255,255,.82);font-size:15px;line-height:1.75;
}
.cta-points li::before{
  content:"";position:absolute;left:0;top:11px;width:2px;height:16px;background:var(--green);border-radius:2px;
}
.cta-card{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-card);padding:28px;
}
.cta-card h3{color:#fff;font-size:18px;margin-bottom:8px}
.cta-card p{color:rgba(255,255,255,.6);font-size:14px;margin-bottom:20px}
.cta-actions{display:flex;flex-direction:column;gap:12px}
.cta-actions .btn{width:100%}
.cta-back{
  margin-top:16px;display:inline-flex;align-items:center;gap:8px;
  color:rgba(255,255,255,.62);font-size:14px;transition:color var(--dur) var(--ease);
}
.cta-back:hover{color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#fff;padding:72px 0 0;border-top:1px solid rgba(255,255,255,.08)}
.footer-grid{
  display:grid;grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr));
  gap:40px;padding-bottom:56px;
}
.footer-col h4{
  font-size:13px;letter-spacing:.1em;color:rgba(255,255,255,.5);font-weight:600;margin-bottom:18px;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{color:rgba(255,255,255,.78);font-size:14.5px}
.footer-col a:hover{color:var(--green)}
.brand-desc{color:rgba(255,255,255,.56);font-size:14px;line-height:1.8;margin:16px 0 0;max-width:320px}
.site-footer .brand-text{color:#fff}
.site-footer address{
  font-style:normal;color:rgba(255,255,255,.66);font-size:14px;line-height:1.9;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:20px;
  font-size:13px;color:rgba(255,255,255,.45);flex-wrap:wrap;
}
.to-top{color:rgba(255,255,255,.62);font-size:13px}
.to-top:hover{color:var(--green)}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--pad-x:32px;--sec-y:80px}
  .page-head-inner{gap:40px}
  .nav-links{gap:20px}
  .search{width:170px}
}
@media (max-width:1023px){
  :root{--pad-x:32px;--sec-y:72px}
  .nav-links,.search,.header-actions > .btn-primary{display:none}
  .menu-toggle{display:inline-flex}
  .page-head{padding-top:56px}
  .page-head-inner{grid-template-columns:1fr;gap:28px;align-items:start;padding-bottom:44px}
  .page-head h1{font-size:clamp(34px,5.6vw,52px)}
  .scene-grid{gap:24px}
  .voice-grid{grid-template-columns:1fr 1fr}
  .faq-grid{grid-template-columns:1fr;gap:32px}
  .cta-inner{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:767px){
  :root{--pad-x:20px;--sec-y:56px;--header-h:60px}
  .brand-text{font-size:14px;white-space:normal;line-height:1.25;max-width:150px}
  .stat-grid{grid-template-columns:1fr 1fr;gap:20px;padding:24px 0}
  .stat-item:nth-child(3){border-left:0;padding-left:0}
  .stat-num{font-size:24px}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}
  .scene-grid{grid-template-columns:1fr}
  .scene-body{padding:22px 20px 24px}
  .scene-title{font-size:20px}
  .checklist-wrap{padding:4px 20px}
  .check-item{grid-template-columns:46px minmax(0,1fr);gap:14px;padding:20px 0}
  .check-mark{display:none}
  .voice-grid{grid-template-columns:1fr}
  .cta-band{padding:64px 0}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:40px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
}
@media (max-width:480px){
  .btn{width:100%}
  .scene-foot{flex-direction:column;align-items:flex-start;gap:8px}
  .stat-grid{grid-template-columns:1fr}
  .stat-item{border-left:0;padding-left:0;border-top:1px solid var(--line);padding-top:16px}
  .stat-item:first-child{border-top:0;padding-top:0}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}