/* roulang page: index */
:root{
  --ink:#14100F;
  --ink-deep:#0F0C0B;
  --ink-2:#2A2320;
  --paper:#F6F2EC;
  --paper-2:#FFFFFF;
  --line:rgba(20,16,15,.12);
  --muted:#6E625A;
  --accent:#C2412C;
  --accent-dark:#A83522;
  --accent-soft:rgba(194,65,44,.10);
  --neon:#FF5B33;
  --sage:#5B6B66;
  --sage-soft:rgba(91,107,102,.10);
  --r-s:4px;
  --r-m:10px;
  --r-l:16px;
  --sh-1:0 2px 8px rgba(20,16,15,.06);
  --sh-2:0 14px 36px rgba(20,16,15,.10);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Inter",system-ui,sans-serif;
  --sec:96px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding-left:1.15em;}
input,textarea{font:inherit;color:inherit;width:100%;}
::selection{background:var(--accent);color:#fff;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 40px;
}
.serif{font-family:var(--serif);}
.section{padding:var(--sec) 0;border-bottom:1px solid var(--line);}
.section:last-of-type{border-bottom:0;}
.eyebrow{
  font-size:13px;
  letter-spacing:.12em;
  color:var(--sage);
  text-transform:uppercase;
  font-weight:600;
}
.sec-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
  margin-bottom:44px;
}
.sec-head h2{
  font-family:var(--serif);
  font-size:clamp(26px,3vw,40px);
  line-height:1.15;
  font-weight:700;
  letter-spacing:-.01em;
}
.sec-head .sec-note{
  font-size:13px;
  color:var(--muted);
  max-width:320px;
  letter-spacing:.02em;
}
.lead{font-size:17px;line-height:1.9;color:var(--ink-2);max-width:720px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 28px;
  border-radius:var(--r-s);
  font-size:15px;
  font-weight:600;
  letter-spacing:.02em;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background-color .25s var(--ease),color .25s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff;}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:var(--sh-1);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#fff;transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{height:42px;padding:0 20px;font-size:14px;}
.btn-block{width:100%;}
.textlink{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--accent);
  border-bottom:1px solid rgba(194,65,44,.45);
  padding-bottom:2px;
  transition:border-color .25s var(--ease),gap .25s var(--ease);
}
.textlink:hover{border-bottom-width:2px;border-color:var(--accent);}
.textlink:hover .arw{transform:translateX(4px);}
.arw{display:inline-block;transition:transform .25s var(--ease);}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-block;
  font-size:13px;
  letter-spacing:.04em;
  padding:4px 10px;
  border-radius:var(--r-s);
  background:var(--accent-soft);
  color:var(--accent);
  line-height:1.5;
}
.badge-sage{background:var(--sage-soft);color:var(--sage);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--ink-deep);
  color:#fff;
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:1px;
  background:linear-gradient(90deg,rgba(255,91,51,0) 0%,rgba(255,91,51,.45) 50%,rgba(255,91,51,0) 100%);
}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
}
.brand{
  display:flex;
  align-items:baseline;
  gap:7px;
  color:#fff;
  flex-shrink:0;
}
.brand-main{
  font-family:var(--serif);
  font-size:21px;
  font-weight:700;
  letter-spacing:.02em;
}
.brand-sub{
  font-size:11px;
  letter-spacing:.24em;
  color:rgba(255,255,255,.55);
  text-transform:uppercase;
}
.nav-menu{
  display:flex;
  align-items:center;
  gap:6px;
  list-style:none;
  margin:0;padding:0;
}
.nav-menu a{
  position:relative;
  display:inline-block;
  padding:8px 16px;
  font-size:15px;
  color:rgba(255,255,255,.72);
  transition:color .25s var(--ease);
}
.nav-menu a::after{
  content:"";
  position:absolute;
  left:16px;right:16px;bottom:0;
  height:2px;
  background:var(--neon);
  width:0;
  transition:width .3s var(--ease);
}
.nav-menu a:hover{color:rgba(255,255,255,.95);}
.nav-menu a:hover::after{width:60%;}
.nav-menu a.is-active{color:#fff;}
.nav-menu a.is-active::after{width:calc(100% - 32px);text-shadow:0 0 10px rgba(255,91,51,.45);box-shadow:0 0 10px rgba(255,91,51,.45);}
.nav-cta{
  margin-left:12px;
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 20px;
  border-radius:var(--r-s);
  background:var(--neon);
  color:#fff;
  font-size:14px;
  font-weight:600;
  transition:box-shadow .25s var(--ease),transform .25s var(--ease),background-color .25s var(--ease);
}
.nav-cta:hover{background:#FF7048;transform:translateY(-1px);box-shadow:0 0 18px rgba(255,91,51,.45);}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  border-radius:var(--r-s);
}
.nav-toggle span{
  display:block;
  width:20px;height:2px;
  background:#fff;
  position:relative;
  transition:background-color .2s var(--ease);
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;left:0;
  width:20px;height:2px;background:#fff;
  transition:transform .25s 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);}
.nav-drawer{
  display:none;
  position:fixed;
  top:60px;right:0;bottom:0;
  width:min(300px,84vw);
  background:var(--ink-deep);
  padding:20px 0 40px;
  transform:translateX(100%);
  transition:transform .3s var(--ease);
  z-index:70;
  overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0);}
.nav-drawer a{
  display:flex;
  align-items:center;
  height:56px;
  padding:0 24px;
  color:rgba(255,255,255,.78);
  font-size:16px;
  border-left:3px solid transparent;
}
.nav-drawer a.is-active{
  color:#fff;
  border-left-color:var(--neon);
  background:rgba(255,91,51,.08);
}
body.no-scroll{overflow:hidden;}

/* ---------- Hero ---------- */
.hero{
  padding:72px 0 80px;
  border-bottom:1px solid var(--line);
  background:var(--paper);
}
.hero-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:56px;
  align-items:center;
}
.hero-tags{
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
  margin-bottom:22px;
  font-size:13px;
  letter-spacing:.1em;
  color:var(--sage);
  font-weight:600;
}
.hero-tags i{
  display:block;width:5px;height:5px;background:var(--accent);border-radius:1px;
}
.hero h1{
  font-family:var(--serif);
  font-size:clamp(34px,4.6vw,60px);
  font-weight:700;
  line-height:1.1;
  letter-spacing:-.01em;
  margin-bottom:22px;
}
.hero h1 em{font-style:normal;color:var(--accent);}
.hero-sub{
  font-size:18px;
  line-height:1.8;
  color:var(--muted);
  max-width:560px;
  margin-bottom:32px;
}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:44px;}
.hero-metrics{
  display:flex;
  gap:0;
  flex-wrap:wrap;
  border-top:1px solid var(--line);
  padding-top:26px;
}
.metric{
  padding:0 28px;
  border-left:1px solid var(--line);
}
.metric:first-child{padding-left:0;border-left:0;}
.metric-num{
  font-family:var(--serif);
  font-size:30px;
  font-weight:700;
  line-height:1.1;
  letter-spacing:-.02em;
}
.metric-num small{font-size:14px;font-weight:600;margin-left:2px;}
.metric-label{font-size:13px;color:var(--muted);letter-spacing:.04em;margin-top:4px;}
.hero-visual{position:relative;}
.hero-figure{
  position:relative;
  aspect-ratio:4/5;
  border-radius:var(--r-l);
  overflow:hidden;
  background:var(--paper-2);
  box-shadow:var(--sh-2);
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-square{
  position:absolute;
  top:20px;left:20px;
  width:64px;height:64px;
  background:rgba(194,65,44,.72);
  z-index:2;
}
.hero-line{
  position:absolute;
  right:24px;bottom:24px;
  width:120px;height:1px;
  background:var(--neon);
  box-shadow:0 0 12px rgba(255,91,51,.8);
  z-index:2;
}

/* ---------- 痛点 ---------- */
.pain-list{border-top:1px solid var(--line);}
.pain-row{
  display:grid;
  grid-template-columns:88px 1fr;
  gap:24px;
  padding:30px 8px;
  border-bottom:1px solid var(--line);
  transition:background-color .3s var(--ease),transform .3s var(--ease);
}
.pain-row:hover{background:var(--paper-2);transform:translateX(4px);}
.pain-num{
  font-family:var(--serif);
  font-size:40px;
  line-height:1;
  color:var(--accent);
  opacity:.85;
  font-weight:700;
}
.pain-row h3{
  font-size:20px;
  font-weight:700;
  margin-bottom:8px;
  letter-spacing:.01em;
}
.pain-row p{font-size:15px;color:var(--muted);max-width:720px;}

/* ---------- 解决方案 ---------- */
.solution-block{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
  margin-bottom:72px;
}
.solution-block:last-child{margin-bottom:0;}
.solution-block.reverse .sol-media{order:2;}
.sol-media{
  position:relative;
  aspect-ratio:16/11;
  border-radius:var(--r-l);
  overflow:hidden;
  box-shadow:var(--sh-1);
  background:var(--paper-2);
}
.sol-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s var(--ease);}
.sol-media:hover img{transform:scale(1.04);}
.sol-index{
  font-size:13px;
  letter-spacing:.14em;
  color:var(--sage);
  font-weight:600;
  margin-bottom:12px;
}
.sol-body h3{
  font-family:var(--serif);
  font-size:clamp(22px,2.2vw,28px);
  line-height:1.3;
  margin-bottom:16px;
  font-weight:700;
}
.sol-body p{font-size:16px;color:var(--ink-2);margin-bottom:14px;max-width:520px;}
.sol-body .textlink{margin-top:8px;}
.solution-wide{
  position:relative;
  border-radius:var(--r-l);
  overflow:hidden;
  background:var(--ink);
}
.solution-wide img{
  width:100%;
  height:420px;
  object-fit:cover;
  opacity:.86;
}
.solution-panel{
  position:absolute;
  left:32px;
  bottom:-40px;
  width:380px;
  max-width:calc(100% - 64px);
  background:var(--paper-2);
  border-radius:var(--r-m);
  box-shadow:var(--sh-2);
  padding:28px;
  margin-bottom:0;
  transform:translateY(-40px);
}
.solution-panel h3{
  font-family:var(--serif);
  font-size:22px;
  margin-bottom:12px;
  font-weight:700;
}
.solution-panel p{font-size:15px;color:var(--muted);margin-bottom:14px;}

/* ---------- 数据 ---------- */
.stats-band{
  background:var(--ink);
  color:#fff;
  padding:72px 0;
  position:relative;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.stats-band::before{
  content:"";
  position:absolute;
  left:0;top:0;
  width:140px;height:1px;
  background:var(--neon);
  box-shadow:0 0 14px rgba(255,91,51,.7);
}
.stats-head{max-width:640px;margin-bottom:44px;}
.stats-head h2{
  font-family:var(--serif);
  font-size:clamp(26px,3vw,38px);
  line-height:1.2;
  margin-bottom:12px;
}
.stats-head p{color:rgba(255,255,255,.6);font-size:15px;}
.stats-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:32px;
}
.stat-item{padding-top:18px;}
.stat-num{
  font-family:var(--serif);
  font-size:clamp(40px,5vw,58px);
  line-height:1.05;
  font-weight:700;
  letter-spacing:-.02em;
  transition:transform .3s var(--ease);
}
.stat-item:hover .stat-num{transform:translateY(-4px);}
.stat-num small{font-size:18px;font-weight:600;margin-left:4px;color:rgba(255,255,255,.7);}
.stat-bar{height:1px;background:rgba(255,255,255,.14);margin:16px 0 12px;}
.stat-label{font-size:13px;color:rgba(255,255,255,.72);letter-spacing:.04em;}

/* ---------- 证言 ---------- */
.quote-wrap{position:relative;}
.quote-slide{display:none;grid-template-columns:320px 1fr;gap:48px;align-items:center;}
.quote-slide.is-active{display:grid;}
.quote-photo{
  aspect-ratio:1/1;
  border-radius:var(--r-m);
  overflow:hidden;
  background:var(--paper-2);
  box-shadow:var(--sh-1);
}
.quote-photo img{width:100%;height:100%;object-fit:cover;}
.quote-body{position:relative;padding-left:8px;}
.quote-mark{
  position:absolute;
  top:-40px;left:-6px;
  font-family:var(--serif);
  font-size:96px;
  line-height:1;
  color:var(--ink);
  opacity:.08;
  pointer-events:none;
}
.quote-text{
  font-family:var(--serif);
  font-size:clamp(20px,2.2vw,24px);
  line-height:1.65;
  color:var(--ink);
  margin-bottom:20px;
  position:relative;
}
.quote-person{font-size:13px;color:var(--muted);letter-spacing:.04em;}
.quote-person strong{color:var(--ink);font-weight:600;margin-right:8px;}
.quote-dots{display:flex;align-items:center;gap:14px;margin-top:40px;}
.quote-dot{
  width:6px;height:6px;
  border-radius:50%;
  background:rgba(20,16,15,.22);
  transition:width .25s var(--ease),height .25s var(--ease),background-color .25s var(--ease);
}
.quote-dot.is-active{width:12px;height:12px;background:var(--accent);}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:56px;}
.faq-side h2{
  font-family:var(--serif);
  font-size:clamp(26px,3vw,36px);
  line-height:1.2;
  margin-bottom:16px;
}
.faq-side p{font-size:15px;color:var(--muted);margin-bottom:20px;max-width:300px;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  width:100%;
  min-height:64px;
  padding:16px 0;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  transition:color .25s var(--ease);
}
.faq-q:hover{color:var(--accent);}
.faq-item.is-open .faq-q{color:var(--accent);}
.faq-icon{
  position:relative;
  flex-shrink:0;
  width:18px;height:18px;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:currentColor;
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.faq-icon::before{left:0;top:8px;width:18px;height:1.5px;}
.faq-icon::after{left:8px;top:0;width:1.5px;height:18px;}
.faq-item.is-open .faq-icon::after{transform:rotate(45deg);opacity:0;}
.faq-a{
  display:none;
  padding:0 40px 20px 0;
  font-size:15px;
  line-height:1.8;
  color:var(--muted);
}
.faq-item.is-open .faq-a{display:block;}

/* ---------- 最新信息 ---------- */
.news-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.post-card{
  display:flex;
  flex-direction:column;
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--r-m);
  overflow:hidden;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(20,16,15,.18);}
.post-card.is-lead{flex-direction:row;}
.post-thumb{
  position:relative;
  overflow:hidden;
  background:var(--paper);
  aspect-ratio:16/10;
}
.post-card.is-lead .post-thumb{
  width:44%;
  flex-shrink:0;
  aspect-ratio:auto;
}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.post-card:hover .post-thumb img{transform:scale(1.04);}
.post-body{
  padding:20px 22px 22px;
  display:flex;
  flex-direction:column;
  gap:10px;
  flex:1;
}
.post-body h3{
  font-family:var(--serif);
  font-size:20px;
  line-height:1.4;
  font-weight:700;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.post-body p{
  font-size:15px;
  color:var(--muted);
  line-height:1.75;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.post-meta{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:var(--muted);
  padding-top:10px;
  border-top:1px solid var(--line);
}
.post-meta .arw{color:var(--accent);font-weight:600;}
.empty-panel{
  width:100%;
  border:1px dashed rgba(20,16,15,.24);
  border-radius:var(--r-m);
  padding:48px;
  text-align:center;
  background:rgba(255,255,255,.5);
}
.empty-panel p{font-size:15px;color:var(--muted);margin-bottom:18px;}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--ink);
  color:#fff;
  padding:72px 0 80px;
  position:relative;
}
.cta-grid{
  display:grid;
  grid-template-columns:1fr 420px;
  gap:64px;
  align-items:start;
}
.cta-copy h2{
  font-family:var(--serif);
  font-size:clamp(26px,3vw,38px);
  line-height:1.2;
  margin-bottom:16px;
}
.cta-copy p{color:rgba(255,255,255,.72);font-size:16px;margin-bottom:24px;max-width:460px;}
.cta-points{list-style:none;margin:0;padding:0;display:grid;gap:12px;}
.cta-points li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:15px;
  color:rgba(255,255,255,.78);
}
.cta-points li::before{
  content:"";
  flex-shrink:0;
  width:6px;height:6px;
  margin-top:10px;
  background:var(--accent);
}
.cta-form{
  background:var(--paper-2);
  color:var(--ink);
  border-radius:var(--r-m);
  box-shadow:var(--sh-2);
  padding:28px;
  margin-top:-96px;
}
.cta-form h3{
  font-family:var(--serif);
  font-size:20px;
  margin-bottom:6px;
}
.cta-form .form-note{font-size:13px;color:var(--muted);margin-bottom:20px;}
.field{margin-bottom:16px;}
.field label{
  display:block;
  font-size:13px;
  color:var(--muted);
  margin-bottom:6px;
  letter-spacing:.04em;
}
.field input,
.field textarea{
  height:48px;
  padding:0 16px;
  border:1px solid var(--line);
  border-radius:var(--r-s);
  background:#fff;
  font-size:15px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{height:96px;padding:12px 16px;resize:vertical;line-height:1.7;}
.field input::placeholder,
.field textarea::placeholder{color:var(--muted);opacity:.8;}
.field input:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(194,65,44,.15);
}
.form-tip{font-size:13px;color:var(--muted);margin-top:12px;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink-deep);
  color:#fff;
  border-top:1px solid rgba(255,255,255,.10);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:4fr 3fr 3fr 2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand .brand-main{font-size:22px;}
.footer-brand p{
  font-size:14px;
  color:rgba(255,255,255,.62);
  margin-top:16px;
  max-width:300px;
  line-height:1.8;
}
.footer-col h4{
  font-size:13px;
  letter-spacing:.08em;
  color:rgba(255,255,255,.5);
  font-weight:600;
  margin-bottom:16px;
}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:10px;}
.footer-col a{
  position:relative;
  font-size:14px;
  color:rgba(255,255,255,.72);
  transition:color .25s var(--ease),padding-left .25s var(--ease);
}
.footer-col a::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  width:1px;height:0;
  background:var(--neon);
  transform:translateY(-50%);
  transition:height .25s var(--ease);
}
.footer-col a:hover{color:#fff;padding-left:10px;}
.footer-col a:hover::before{height:14px;}
.footer-contact li{font-size:14px;color:rgba(255,255,255,.72);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);
  padding:20px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.6);}
.footer-bottom a:hover{color:#fff;}

/* ---------- 入场动效 ---------- */
.js .reveal{opacity:0;transform:translateY(12px);}
.js .reveal.is-in{
  opacity:1;
  transform:none;
  transition:opacity .3s var(--ease),transform .3s var(--ease);
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  :root{--sec:72px;}
  .container{padding:0 24px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-figure{aspect-ratio:16/10;max-width:560px;}
  .solution-block{gap:32px;}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:28px;}
  .quote-slide{grid-template-columns:220px 1fr;gap:32px;}
  .faq-grid{grid-template-columns:1fr;gap:32px;}
  .cta-grid{grid-template-columns:1fr;gap:32px;}
  .cta-form{margin-top:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .post-card.is-lead .post-thumb{width:40%;}
}
@media (max-width:768px){
  :root{--sec:56px;}
  .nav-menu,.nav-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-drawer{display:block;}
  .nav-wrap{height:60px;}
  .hero{padding:48px 0 56px;}
  .hero h1{font-size:clamp(30px,7.2vw,42px);}
  .hero-sub{font-size:16px;}
  .hero-metrics{padding-top:20px;gap:16px 0;}
  .metric{padding:0 18px;}
  .metric-num{font-size:24px;}
  .sec-head{margin-bottom:28px;}
  .pain-row{grid-template-columns:56px 1fr;gap:16px;padding:24px 4px;}
  .pain-num{font-size:30px;}
  .solution-block{grid-template-columns:1fr;gap:24px;margin-bottom:56px;}
  .solution-block.reverse .sol-media{order:0;}
  .solution-wide img{height:280px;}
  .solution-panel{
    position:static;
    width:100%;
    max-width:100%;
    transform:none;
    border-radius:0 0 var(--r-m) var(--r-m);
    box-shadow:none;
    background:var(--paper-2);
  }
  .stats-grid{grid-template-columns:1fr 1fr;gap:24px;}
  .quote-slide{grid-template-columns:1fr;gap:20px;}
  .quote-photo{max-width:240px;}
  .quote-dots{display:none;}
  .news-grid{grid-template-columns:1fr;}
  .post-card.is-lead{flex-direction:column;}
  .post-card.is-lead .post-thumb{width:100%;aspect-ratio:16/10;}
  .cta-band{padding:56px 0 64px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .hero-actions .btn{flex:1;min-width:140px;}
}
@media (max-width:480px){
  .container{padding:0 18px;}
  .hero-metrics{flex-wrap:wrap;}
  .metric{flex:1 1 50%;border-left:0;padding:0 0 12px;}
  .metric:first-child{padding-left:0;}
  .stats-grid{grid-template-columns:1fr;}
  .cta-form{padding:22px;}
  .empty-panel{padding:32px 20px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .js .reveal{opacity:1;transform:none;}
}

/* roulang page: article */
:root{
  --ink:#14100F;
  --ink-deep:#0F0C0B;
  --ink-2:#2A2320;
  --paper:#F6F2EC;
  --paper-2:#FFFFFF;
  --line:rgba(20,16,15,.12);
  --line-strong:rgba(20,16,15,.18);
  --muted:#6E625A;
  --accent:#C2412C;
  --accent-dark:#A93723;
  --accent-soft:rgba(194,65,44,.10);
  --neon:#FF5B33;
  --sage:#5B6B66;
  --sage-soft:rgba(91,107,102,.10);
  --r-s:4px;
  --r-m:10px;
  --r-l:16px;
  --sh-1:0 2px 8px rgba(20,16,15,.06);
  --sh-2:0 14px 36px rgba(20,16,15,.10);
  --w:1200px;
  --gutter:40px;
  --f-serif:'Noto Serif SC','Source Han Serif SC','Songti SC','SimSun',serif;
  --f-sans:-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei','Inter','Helvetica Neue',Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--f-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-family:var(--f-serif);font-weight:700;color:var(--ink);}
p{margin:0 0 1.2em;}
figure{margin:0;}
:focus-visible{outline:2px solid var(--ink);outline-offset:2px;border-radius:2px;}
.container{
  width:100%;
  max-width:var(--w);
  margin:0 auto;
  padding:0 var(--gutter);
}
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--ink);color:#fff;padding:10px 18px;border-radius:var(--r-s);
}
.skip-link:focus{left:16px;top:16px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:100;
  background:var(--ink-deep);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(to right,rgba(255,91,51,0),rgba(255,91,51,.45),rgba(255,91,51,0));
  pointer-events:none;
}
.nav-inner{
  display:flex;align-items:center;gap:28px;
  height:72px;
}
.brand{
  display:inline-flex;align-items:baseline;gap:6px;
  flex-shrink:0;
}
.brand-main{
  font-family:var(--f-serif);font-size:21px;font-weight:700;letter-spacing:.02em;
  color:#fff;line-height:1;
}
.brand-sub{
  font-family:var(--f-sans);font-size:12px;letter-spacing:.22em;
  color:rgba(255,255,255,.58);line-height:1;
}
.nav-menu{
  display:flex;align-items:center;gap:30px;
  margin:0 auto;
}
.nav-menu a{
  position:relative;display:block;
  padding:25px 2px;
  font-size:15px;line-height:1.4;
  color:rgba(255,255,255,.72);
  transition:color .2s ease;
}
.nav-menu a::after{
  content:"";position:absolute;left:50%;bottom:16px;transform:translateX(-50%);
  height:2px;width:0;border-radius:2px;
  background:var(--neon);
  transition:width .26s cubic-bezier(.2,.7,.3,1);
}
.nav-menu a:hover{color:rgba(255,255,255,.95);}
.nav-menu a:hover::after{width:60%;}
.nav-menu a.is-active{
  color:#fff;
  text-shadow:0 0 10px rgba(255,91,51,.45);
}
.nav-menu a.is-active::after{width:100%;}
.nav-cta{
  flex-shrink:0;
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 20px;
  background:var(--accent);color:#fff;
  font-size:14px;font-weight:600;border-radius:var(--r-s);
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease;
}
.nav-cta:hover{
  background:#D24A33;
  transform:translateY(-2px);
  box-shadow:0 0 18px rgba(255,91,51,.35);
}
.nav-toggle{
  display:none;flex-shrink:0;
  width:40px;height:40px;border-radius:var(--r-s);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
  border:1px solid rgba(255,255,255,.18);
}
.nav-toggle span{
  display:block;width:18px;height:2px;background:rgba(255,255,255,.85);
  border-radius:2px;transition:transform .24s ease,opacity .24s ease;
}
.site-header.is-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.site-header.is-open .nav-toggle span:nth-child(2){opacity:0;}
.site-header.is-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ============ 面包屑 ============ */
.crumb-bar{border-bottom:1px solid var(--line);background:var(--paper);}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  min-height:44px;font-size:13px;letter-spacing:.04em;color:var(--muted);
  overflow:hidden;white-space:nowrap;
}
.breadcrumb a{color:var(--muted);transition:color .2s ease;}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{color:rgba(20,16,15,.28);}
.breadcrumb .current{
  color:var(--ink);font-weight:600;
  overflow:hidden;text-overflow:ellipsis;max-width:100%;
}

/* ============ 文章头 ============ */
.article-head{
  padding:44px 0 30px;
  border-bottom:1px solid var(--line);
}
.badge{
  display:inline-block;
  font-size:13px;letter-spacing:.04em;line-height:1.5;
  padding:4px 10px;border-radius:var(--r-s);
  background:var(--accent-soft);color:var(--accent);
}
.badge--sage{background:var(--sage-soft);color:var(--sage);}
.article-title{
  margin:16px 0 0;
  font-size:clamp(28px,3.4vw,44px);
  line-height:1.22;
  letter-spacing:-.01em;
  max-width:860px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:20px;
  font-size:13px;letter-spacing:.04em;color:var(--muted);
}
.article-meta .dot{color:rgba(20,16,15,.24);}

/* ============ 主体两栏 ============ */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:56px;
  padding:44px 0 72px;
  align-items:start;
}
.article-main{min-width:0;max-width:720px;}

.article-body{
  font-size:17px;line-height:1.9;color:var(--ink-2);
  word-wrap:break-word;
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.4em;font-size:17px;line-height:1.9;}
.article-body > p:first-of-type{font-size:18px;color:var(--ink);}
.article-body h2{
  position:relative;
  margin:48px 0 16px;
  padding-left:14px;
  font-size:clamp(22px,2.2vw,28px);
  line-height:1.35;
  font-family:var(--f-serif);
  color:var(--ink);
  scroll-margin-top:96px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.32em;
  width:3px;height:20px;background:var(--accent);border-radius:2px;
}
.article-body h3{
  margin:32px 0 12px;
  font-size:22px;line-height:1.4;
  font-family:var(--f-serif);color:var(--ink);
  scroll-margin-top:96px;
}
.article-body h4{
  margin:24px 0 10px;font-size:18px;line-height:1.5;color:var(--ink);
}
.article-body a{
  color:var(--accent);
  border-bottom:1px solid rgba(194,65,44,.45);
  transition:border-color .2s ease,color .2s ease;
}
.article-body a:hover{border-bottom:2px solid var(--accent);}
.article-body strong{color:var(--ink);font-weight:600;}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding:0;}
.article-body ul li{
  position:relative;padding-left:20px;margin-bottom:.5em;line-height:1.9;
}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.82em;
  width:6px;height:6px;background:var(--accent);border-radius:1px;
}
.article-body ol{counter-reset:item;list-style:none;}
.article-body ol li{
  position:relative;padding-left:26px;margin-bottom:.5em;line-height:1.9;
}
.article-body ol li::before{
  counter-increment:item;content:counter(item) ".";
  position:absolute;left:0;top:0;color:var(--accent);font-weight:600;
}
.article-body blockquote{
  margin:28px 0;
  padding:20px 24px;
  background:var(--accent-soft);
  border-left:3px solid var(--accent);
  border-radius:0 var(--r-m) var(--r-m) 0;
  font-size:17px;line-height:1.8;color:var(--ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  width:100%;height:auto;margin:28px 0 10px;
  border-radius:var(--r-m);
}
.article-body figure figcaption{
  margin:10px 0 24px;
  font-size:13px;color:var(--muted);text-align:center;letter-spacing:.04em;
}
.article-body table{
  width:100%;margin:24px 0;border-collapse:collapse;
  font-size:14px;line-height:1.7;
  border-radius:var(--r-m);overflow:hidden;
  border:1px solid var(--line);
}
.article-body thead th{
  background:var(--ink);color:#fff;
  font-weight:600;text-align:left;
  padding:12px 14px;font-size:13px;letter-spacing:.04em;
}
.article-body tbody td{
  padding:12px 14px;border-top:1px solid var(--line);color:var(--ink-2);
}
.article-body tbody tr:nth-child(even) td{background:rgba(20,16,15,.02);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0;}
.article-body code{
  background:rgba(20,16,15,.06);padding:2px 6px;border-radius:3px;font-size:.92em;
}

.empty-state{
  padding:48px 36px;
  background:var(--paper-2);
  border:1px dashed var(--line-strong);
  border-radius:var(--r-m);
  text-align:center;
}
.empty-state h2{font-size:24px;margin-bottom:12px;}
.empty-state p{color:var(--muted);font-size:15px;max-width:520px;margin:0 auto 22px;}

/* ============ 侧栏 ============ */
.article-aside{
  position:sticky;top:96px;
  display:flex;flex-direction:column;gap:20px;
}
.aside-panel{
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--r-m);
  padding:20px;
  box-shadow:var(--sh-1);
}
.aside-title{
  font-family:var(--f-sans);
  font-size:13px;letter-spacing:.08em;color:var(--muted);
  font-weight:600;margin-bottom:14px;
  display:flex;align-items:center;gap:8px;
}
.aside-title::before{
  content:"";width:14px;height:2px;background:var(--accent);border-radius:2px;
}
.toc-list li{margin-bottom:2px;}
.toc-list a{
  display:block;
  padding:7px 0 7px 12px;
  font-size:14px;line-height:1.6;color:var(--ink-2);
  border-left:2px solid transparent;
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.toc-list a:hover{color:var(--accent);background:rgba(194,65,44,.05);}
.toc-list a.is-current{
  color:var(--ink);font-weight:600;border-left-color:var(--accent);
}
.aside-links li + li{border-top:1px solid var(--line);}
.aside-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 0;
  font-size:14px;color:var(--ink-2);
  transition:color .2s ease;
}
.aside-links a span.arrow{color:var(--accent);transition:transform .2s ease;}
.aside-links a:hover{color:var(--accent);}
.aside-links a:hover span.arrow{transform:translateX(4px);}
.aside-note{
  font-size:13px;line-height:1.8;color:var(--muted);
}

/* ============ 文章脚 ============ */
.article-foot{margin-top:48px;}
.tag-list{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.tag{
  display:inline-block;font-size:13px;letter-spacing:.04em;
  padding:5px 12px;border-radius:var(--r-s);
  border:1px solid var(--line-strong);color:var(--ink-2);
  transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.tag:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft);}
.prevnext{
  display:grid;grid-template-columns:1fr 1fr;gap:16px;
  padding-top:28px;border-top:1px solid var(--line);
}
.pn-card{
  display:block;
  padding:18px 20px;
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--r-m);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.pn-card .pn-label{
  display:block;font-size:13px;letter-spacing:.06em;color:var(--muted);margin-bottom:6px;
}
.pn-card .pn-title{
  display:block;font-size:15px;line-height:1.6;color:var(--ink-2);font-weight:600;
}
.pn-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh-2);
  border-color:var(--line-strong);
}
.pn-card--muted{cursor:default;}
.pn-card--muted:hover{transform:none;box-shadow:none;border-color:var(--line);}
.pn-card--next{text-align:right;}
.foot-actions{margin-top:28px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;
  font-size:15px;font-weight:600;border-radius:var(--r-s);
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--accent);color:#fff;}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:var(--sh-1);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  background:transparent;color:var(--ink);border:1px solid var(--ink);
}
.btn-ghost:hover{background:var(--ink);color:#fff;}
.btn-sm{height:42px;padding:0 20px;font-size:14px;}

/* ============ 相关推荐 ============ */
.related{
  padding:72px 0;
  border-top:1px solid var(--line);
}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:36px;
}
.section-head h2{
  font-size:clamp(24px,2.6vw,34px);
  line-height:1.2;
}
.section-head .head-note{
  font-size:13px;letter-spacing:.04em;color:var(--muted);margin:0;
}
.text-link{
  font-size:14px;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--ink);
  padding-bottom:2px;
  display:inline-flex;align-items:center;gap:6px;
  transition:color .2s ease,border-color .2s ease;
}
.text-link .arrow{transition:transform .2s ease;}
.text-link:hover{color:var(--accent);border-color:var(--accent);}
.text-link:hover .arrow{transform:translateX(4px);}

.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  display:flex;flex-direction:column;
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--r-m);
  overflow:hidden;
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.card:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh-2);
  border-color:var(--line-strong);
}
.card-media{
  position:relative;
  aspect-ratio:16/10;
  overflow:hidden;
  background:var(--paper);
}
.card-media img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .4s cubic-bezier(.2,.7,.3,1);
}
.card:hover .card-media img{transform:scale(1.04);}
.card-body{padding:20px;display:flex;flex-direction:column;flex:1;}
.card-body h3{
  margin:12px 0 8px;
  font-size:19px;line-height:1.45;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-body p{
  margin:0 0 16px;
  font-size:15px;line-height:1.75;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  margin-top:auto;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:14px;border-top:1px solid var(--line);
  font-size:13px;letter-spacing:.04em;color:var(--muted);
}
.card-foot .go{color:var(--accent);transition:transform .2s ease;}
.card:hover .card-foot .go{transform:translateX(4px);}

/* ============ CTA 细条 ============ */
.cta-strip{
  background:var(--ink);
  color:#fff;
  border-top:1px solid rgba(255,255,255,.10);
  border-bottom:1px solid rgba(255,255,255,.10);
}
.cta-strip-inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:38px 0;
}
.cta-strip h2{
  font-size:clamp(20px,2.2vw,26px);
  line-height:1.35;color:#fff;
}
.cta-strip p{
  margin:8px 0 0;font-size:14px;color:rgba(255,255,255,.72);
}
.cta-strip .btn-primary{
  background:var(--neon);color:#231008;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease;
}
.cta-strip .btn-primary:hover{
  background:#FF7048;
  box-shadow:0 0 22px rgba(255,91,51,.4);
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink-deep);
  color:rgba(255,255,255,.72);
  border-top:1px solid rgba(255,255,255,.10);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{
  font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:320px;
}
.footer-col h4{
  font-family:var(--f-sans);
  font-size:13px;letter-spacing:.08em;font-weight:600;
  color:rgba(255,255,255,.92);
  margin:0 0 16px;
}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{
  position:relative;
  font-size:14px;color:rgba(255,255,255,.72);
  padding-left:0;
  transition:color .2s ease,padding-left .2s ease;
}
.footer-col ul a::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:1px;height:0;background:var(--neon);
  transition:height .2s ease;
}
.footer-col ul a:hover{color:#fff;padding-left:10px;}
.footer-col ul a:hover::before{height:14px;}
.footer-contact li{
  font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);margin-bottom:10px;
}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  padding:22px 0 28px;
  border-top:1px solid rgba(255,255,255,.10);
  font-size:13px;color:rgba(255,255,255,.52);letter-spacing:.03em;
}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .3s cubic-bezier(.2,.7,.3,1),transform .3s cubic-bezier(.2,.7,.3,1);}
.reveal.is-in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1100px){
  :root{--gutter:24px;}
  .article-layout{grid-template-columns:minmax(0,1fr) 260px;gap:36px;}
}
@media (max-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0;padding-bottom:56px;}
  .article-main{max-width:720px;}
  .article-aside{position:static;margin-top:40px;top:auto;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:900px){
  .nav-inner{height:60px;}
  .nav-toggle{display:flex;}
  .nav-menu{
    position:fixed;top:60px;right:0;
    width:min(320px,84vw);
    height:calc(100vh - 60px);
    display:flex;flex-direction:column;align-items:stretch;gap:0;
    margin:0;padding:16px 20px 32px;
    background:var(--ink-deep);
    border-left:1px solid rgba(255,255,255,.10);
    transform:translateX(102%);
    transition:transform .3s cubic-bezier(.2,.7,.3,1);
    overflow-y:auto;
    z-index:120;
  }
  .site-header.is-open .nav-menu{transform:translateX(0);}
  .nav-menu a{
    padding:0 12px;height:56px;line-height:56px;font-size:16px;
    border-bottom:1px solid rgba(255,255,255,.07);
  }
  .nav-menu a::after{display:none;}
  .nav-menu a.is-active{
    background:rgba(255,91,51,.08);
    box-shadow:inset 3px 0 0 var(--neon);
    text-shadow:none;
  }
  .nav-menu a:hover{background:rgba(255,255,255,.04);}
  .nav-cta{display:none;}
  body.nav-locked{overflow:hidden;}
}
@media (max-width:768px){
  :root{--gutter:18px;}
  .article-head{padding:32px 0 24px;}
  .article-layout{padding:32px 0 48px;}
  .article-body,.article-body p{font-size:16px;line-height:1.85;}
  .article-body > p:first-of-type{font-size:17px;}
  .article-body h2{margin-top:36px;}
  .article-body h3{margin-top:26px;}
  .prevnext{grid-template-columns:1fr;}
  .pn-card--next{text-align:left;}
  .related{padding:52px 0;}
  .card-grid{grid-template-columns:1fr;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:26px;}
  .cta-strip-inner{flex-direction:column;align-items:flex-start;gap:20px;padding:32px 0;}
  .cta-strip .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .aside-panel{padding:16px;}
}
@media (max-width:520px){
  .brand-main{font-size:19px;}
  .article-title{font-size:clamp(24px,6.4vw,30px);}
  .article-meta{font-size:12px;gap:8px;}
  .btn{height:46px;padding:0 22px;font-size:14px;}
  .empty-state{padding:36px 20px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
  }
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category1 */
:root{
  --ink:#14100F;
  --ink-deep:#0F0C0B;
  --ink-2:#2A2320;
  --paper:#F6F2EC;
  --paper-2:#FFFFFF;
  --line:rgba(20,16,15,.12);
  --line-strong:rgba(20,16,15,.18);
  --muted:#6E625A;
  --accent:#C2412C;
  --accent-dark:#A83522;
  --accent-soft:rgba(194,65,44,.10);
  --neon:#FF5B33;
  --sage:#5B6B66;
  --sage-soft:rgba(91,107,102,.10);
  --r-s:4px;
  --r-m:10px;
  --r-l:16px;
  --sh-1:0 2px 8px rgba(20,16,15,.06);
  --sh-2:0 14px 36px rgba(20,16,15,.10);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --sans:"PingFang SC","Microsoft YaHei","Inter",system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px;}
.serif{font-family:var(--serif);}

/* ---------- Header / Nav ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--ink-deep);}
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,91,51,.45),transparent);}
.nav-bar{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.brand{display:flex;align-items:baseline;gap:6px;color:#fff;flex:0 0 auto;}
.brand-main{font-family:var(--serif);font-size:21px;font-weight:700;letter-spacing:.02em;}
.brand-sub{font-size:12px;letter-spacing:.18em;color:rgba(255,255,255,.55);}
.site-nav{flex:1;display:flex;justify-content:center;}
.nav-menu{display:flex;align-items:center;gap:34px;}
.nav-menu a{position:relative;display:inline-block;padding:6px 0;font-size:15px;color:rgba(255,255,255,.72);transition:color .2s;}
.nav-menu a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--neon);box-shadow:0 0 10px rgba(255,91,51,.6);transition:width .28s cubic-bezier(.2,.7,.3,1);}
.nav-menu a:hover{color:rgba(255,255,255,.95);}
.nav-menu a:hover::after{width:60%;}
.nav-menu a.is-active{color:#fff;text-shadow:0 0 10px rgba(255,91,51,.45);}
.nav-menu a.is-active::after{width:100%;}
.nav-end{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{display:none;width:40px;height:40px;position:relative;border:1px solid rgba(255,255,255,.18);border-radius:var(--r-s);}
.nav-toggle span{position:absolute;left:11px;right:11px;top:50%;height:2px;background:#fff;border-radius:2px;transition:transform .25s,opacity .25s;}
.nav-toggle span:nth-child(1){transform:translateY(-6px);}
.nav-toggle span:nth-child(3){transform:translateY(6px);}
body.nav-open .nav-toggle span:nth-child(1){transform:rotate(45deg);}
body.nav-open .nav-toggle span:nth-child(2){opacity:0;}
body.nav-open .nav-toggle span:nth-child(3){transform:rotate(-45deg);}
.drawer-cta{display:none;}
.nav-mask{position:fixed;inset:0;background:rgba(15,12,11,.55);opacity:0;pointer-events:none;transition:opacity .3s;z-index:55;}
body.nav-open .nav-mask{opacity:1;pointer-events:auto;}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 28px;border-radius:var(--r-s);font-size:15px;font-weight:600;border:1px solid transparent;transition:transform .2s,background-color .2s,color .2s,box-shadow .2s,border-color .2s;}
.btn-primary{background:var(--accent);color:#fff;}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:var(--sh-1);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#fff;transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-neon{background:var(--neon);color:#fff;height:40px;padding:0 20px;font-size:14px;}
.btn-neon:hover{background:#ff6d47;box-shadow:0 0 18px rgba(255,91,51,.35);transform:translateY(-2px);}
.btn-neon:active{transform:translateY(0);}
.text-link{display:inline-flex;align-items:center;gap:8px;margin-top:22px;font-size:15px;font-weight:600;color:var(--accent);border-bottom:1px solid var(--accent);padding-bottom:2px;transition:border-color .2s;}
.text-link:hover{border-bottom-color:var(--accent-dark);color:var(--accent-dark);}
.text-link .arrow{display:inline-block;transition:transform .2s;}
.text-link:hover .arrow{transform:translateX(4px);}

/* ---------- Page head ---------- */
.page-head{background:var(--paper);border-bottom:1px solid var(--line);padding:40px 0 56px;}
.breadcrumb{display:flex;align-items:center;gap:12px;font-size:13px;letter-spacing:.04em;color:var(--muted);margin-bottom:32px;}
.breadcrumb a{color:var(--muted);transition:color .2s;}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{width:1px;height:11px;background:var(--line-strong);transform:rotate(18deg);}
.breadcrumb .current{color:var(--ink);font-weight:600;}
.page-head-grid{display:grid;grid-template-columns:1fr 200px;gap:48px;align-items:end;}
.eyebrow{font-size:13px;letter-spacing:.08em;color:var(--sage);margin-bottom:18px;}
.page-head h1{font-family:var(--serif);font-size:clamp(32px,4vw,54px);line-height:1.14;font-weight:700;letter-spacing:-.01em;max-width:780px;}
.lede{margin-top:20px;font-size:16px;line-height:1.9;color:var(--muted);max-width:640px;}
.page-head-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;}
.head-deco{display:flex;justify-content:flex-end;align-items:flex-end;padding-bottom:6px;}
.deco-square{position:relative;width:96px;height:96px;background:rgba(194,65,44,.86);border-radius:2px;}
.deco-square::after{content:"";position:absolute;right:0;bottom:-26px;width:120px;height:1px;background:var(--accent);}

/* ---------- Sections ---------- */
.section{padding:96px 0;}
.section + .section{border-top:1px solid var(--line);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:44px;}
.section-head h2{font-family:var(--serif);font-size:clamp(24px,2.8vw,36px);line-height:1.2;font-weight:700;max-width:620px;}
.section-head .note{font-size:13px;letter-spacing:.06em;color:var(--sage);text-align:right;flex:0 0 auto;}
.section-sub{margin-top:14px;font-size:15px;color:var(--muted);max-width:640px;}

/* ---------- Intro ---------- */
.intro-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:56px;align-items:center;}
.intro-copy h2{font-family:var(--serif);font-size:clamp(24px,2.8vw,36px);line-height:1.22;font-weight:700;}
.intro-copy p{margin-top:18px;font-size:16px;line-height:1.9;color:var(--muted);max-width:560px;}
.intro-list{margin-top:26px;display:grid;gap:12px;}
.intro-list li{display:flex;gap:12px;font-size:15px;color:var(--ink-2);}
.intro-list li::before{content:"";flex:0 0 auto;width:6px;height:6px;margin-top:10px;background:var(--accent);}
.intro-media{position:relative;border-radius:var(--r-l);overflow:hidden;aspect-ratio:4/3;background:var(--paper-2);border:1px solid var(--line);}
.intro-media img{width:100%;height:100%;object-fit:cover;}
.intro-media figcaption{position:absolute;left:16px;bottom:16px;background:rgba(255,255,255,.94);border-radius:var(--r-s);padding:6px 12px;font-size:12px;letter-spacing:.04em;color:var(--muted);}

/* ---------- Service sequence ---------- */
.svc{border-top:1px solid var(--line);}
.svc-item{display:grid;grid-template-columns:210px 1fr;gap:40px;padding:42px 24px;border-bottom:1px solid var(--line);transition:background-color .25s,transform .25s;}
.svc-item:hover{background:var(--paper-2);transform:translateX(4px);}
.svc-num{font-family:var(--serif);font-size:42px;line-height:1;color:var(--accent);opacity:.85;}
.svc-tag{display:inline-block;margin-top:14px;font-size:13px;letter-spacing:.06em;color:var(--sage);background:var(--sage-soft);border-radius:var(--r-s);padding:4px 10px;}
.svc-body h3{font-family:var(--serif);font-size:clamp(20px,1.8vw,24px);line-height:1.35;font-weight:700;}
.svc-body p{margin-top:14px;font-size:15.5px;line-height:1.9;color:var(--muted);max-width:720px;}
.points{margin-top:20px;display:grid;gap:9px;}
.points li{display:flex;gap:10px;font-size:15px;color:var(--ink-2);}
.points li::before{content:"";flex:0 0 auto;width:6px;height:6px;margin-top:10px;background:var(--accent);}

/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;margin-top:8px;}
.steps::before{content:"";position:absolute;top:18px;left:0;right:0;height:1px;background:var(--line);}
.step{position:relative;}
.step-num{position:relative;z-index:1;width:36px;height:36px;border-radius:50%;border:1px solid var(--line-strong);background:var(--paper);display:flex;align-items:center;justify-content:center;font-family:var(--serif);font-size:15px;color:var(--ink-2);}
.step.is-active .step-num{background:var(--accent);border-color:var(--accent);color:#fff;}
.step h3{font-size:17px;margin-top:20px;font-weight:700;}
.step p{margin-top:8px;font-size:14px;line-height:1.75;color:var(--muted);}

/* ---------- Fit ---------- */
.fit-grid{display:grid;grid-template-columns:1.45fr 1fr;gap:24px;align-items:stretch;}
.fit-main{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden;display:flex;flex-direction:column;transition:transform .25s,box-shadow .25s,border-color .25s;}
.fit-main:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--line-strong);}
.fit-main-media{aspect-ratio:16/10;overflow:hidden;}
.fit-main-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s cubic-bezier(.2,.7,.3,1);}
.fit-main:hover .fit-main-media img{transform:scale(1.04);}
.fit-main-body{padding:24px;}
.fit-main-body h3{font-family:var(--serif);font-size:21px;line-height:1.35;font-weight:700;}
.fit-main-body p{margin-top:12px;font-size:15px;color:var(--muted);line-height:1.85;}
.fit-side{display:grid;gap:24px;grid-template-rows:1fr 1fr;}
.fit-card{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-m);padding:24px;display:flex;flex-direction:column;justify-content:center;transition:transform .25s,box-shadow .25s,border-color .25s;}
.fit-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--line-strong);}
.fit-card h3{font-family:var(--serif);font-size:19px;line-height:1.4;font-weight:700;}
.fit-card p{margin-top:10px;font-size:14.5px;color:var(--muted);line-height:1.8;}
.badge{display:inline-block;align-self:flex-start;font-size:13px;letter-spacing:.04em;padding:4px 10px;border-radius:var(--r-s);background:var(--accent-soft);color:var(--accent);margin-bottom:14px;}
.badge.sage{background:var(--sage-soft);color:var(--sage);}

/* ---------- Stats ---------- */
.stats-bar{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-m);display:grid;grid-template-columns:repeat(4,1fr);overflow:hidden;}
.stat{padding:34px 26px;border-left:1px solid var(--line);transition:background-color .25s;}
.stat:first-child{border-left:0;}
.stat:hover{background:var(--paper);}
.stat-num{font-family:var(--serif);font-size:clamp(30px,3.2vw,42px);line-height:1.1;color:var(--ink);transition:transform .25s;}
.stat:hover .stat-num{transform:translateY(-3px);}
.stat-num .unit{font-size:14px;font-family:var(--sans);color:var(--muted);margin-left:6px;letter-spacing:.02em;}
.stat p{margin-top:12px;font-size:13px;color:var(--muted);letter-spacing:.02em;}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:1fr 1.65fr;gap:56px;align-items:start;}
.faq-aside h2{font-family:var(--serif);font-size:clamp(24px,2.8vw,34px);line-height:1.22;font-weight:700;}
.faq-aside p{margin-top:16px;font-size:15px;color:var(--muted);max-width:320px;}
.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;min-height:64px;padding:16px 0;text-align:left;font-size:17px;font-weight:600;color:var(--ink);transition:color .2s;}
.faq-q:hover{color:var(--accent);}
.faq-icon{position:relative;flex:0 0 auto;width:16px;height:16px;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:currentColor;transition:transform .22s,opacity .22s;}
.faq-icon::before{left:0;right:0;top:7px;height:1.5px;}
.faq-icon::after{top:0;bottom:0;left:7px;width:1.5px;}
.faq-item.open .faq-q{color:var(--accent);}
.faq-item.open .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .28s cubic-bezier(.2,.7,.3,1);}
.faq-item.open .faq-a{grid-template-rows:1fr;}
.faq-a-inner{overflow:hidden;}
.faq-a p{padding-bottom:22px;font-size:15px;line-height:1.85;color:var(--muted);max-width:660px;}

/* ---------- CTA ---------- */
.cta{background:var(--ink);padding:80px 0;color:#fff;}
.cta-grid{display:grid;grid-template-columns:1fr 420px;gap:56px;align-items:center;}
.cta h2{font-family:var(--serif);font-size:clamp(26px,3vw,38px);line-height:1.2;font-weight:700;color:#fff;}
.cta .lead{margin-top:18px;font-size:16px;line-height:1.85;color:rgba(255,255,255,.72);max-width:480px;}
.cta-list{margin-top:26px;display:grid;gap:12px;}
.cta-list li{display:flex;gap:12px;font-size:15px;color:rgba(255,255,255,.82);}
.cta-list li::before{content:"";flex:0 0 auto;width:7px;height:7px;margin-top:9px;background:var(--accent);}
.form-card{background:var(--paper-2);border-radius:var(--r-m);box-shadow:var(--sh-2);padding:28px;color:var(--ink);}
.form-card h3{font-family:var(--serif);font-size:20px;font-weight:700;}
.form-card .hint{font-size:13px;color:var(--muted);margin-top:6px;margin-bottom:20px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px;letter-spacing:.04em;}
.field input,.field textarea{width:100%;border:1px solid var(--line);border-radius:var(--r-s);background:#fff;color:var(--ink);font-family:inherit;font-size:15px;transition:border-color .2s,box-shadow .2s;}
.field input{height:48px;padding:0 16px;}
.field textarea{height:104px;padding:12px 16px;line-height:1.7;resize:vertical;}
.field input::placeholder,.field textarea::placeholder{color:var(--muted);}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(194,65,44,.15);}
.form-card .btn{width:100%;}
.form-note{margin-top:12px;font-size:12px;color:var(--muted);text-align:center;}
.form-done{display:none;margin-top:12px;font-size:13px;color:var(--accent);text-align:center;}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink-deep);border-top:1px solid rgba(255,255,255,.10);padding:64px 0 28px;color:rgba(255,255,255,.72);}
.footer-grid{display:grid;grid-template-columns:4fr 3fr 3fr 2fr;gap:40px;}
.footer-brand .brand{display:inline-flex;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);max-width:300px;}
.footer-col h4{font-size:13px;letter-spacing:.08em;color:#fff;margin-bottom:16px;font-weight:600;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);border-left:1px solid transparent;padding-left:0;transition:color .2s,padding-left .2s,border-color .2s;}
.footer-col a:hover{color:#fff;padding-left:8px;border-left:1px solid var(--neon);}
.footer-contact li{font-size:14px;color:rgba(255,255,255,.72);}
.footer-bottom{margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.10);display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13px;color:rgba(255,255,255,.5);}

/* ---------- Reveal ---------- */
.js .reveal{opacity:0;transform:translateY(12px);transition:opacity .3s cubic-bezier(.2,.7,.3,1),transform .3s cubic-bezier(.2,.7,.3,1);}
.js .reveal.is-in{opacity:1;transform:none;}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .container{padding:0 24px;}
  .section{padding:72px 0;}
  .page-head-grid{grid-template-columns:1fr;gap:32px;}
  .head-deco{justify-content:flex-start;}
  .intro-grid{grid-template-columns:1fr;gap:36px;}
  .faq-grid{grid-template-columns:1fr;gap:32px;}
  .cta-grid{grid-template-columns:1fr;gap:36px;}
  .svc-item{grid-template-columns:160px 1fr;gap:28px;padding:36px 12px;}
  .fit-grid{grid-template-columns:1fr;}
  .fit-side{grid-template-rows:auto;grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:900px){
  .nav-toggle{display:block;}
  .nav-cta{display:none;}
  .site-nav{position:fixed;top:0;right:0;width:min(320px,84vw);height:100vh;background:var(--ink-deep);padding:88px 24px 32px;display:flex;flex-direction:column;justify-content:flex-start;overflow-y:auto;transform:translateX(100%);transition:transform .3s cubic-bezier(.2,.7,.3,1);box-shadow:-20px 0 50px rgba(0,0,0,.45);}
  body.nav-open .site-nav{transform:translateX(0);}
  .nav-menu{flex-direction:column;align-items:stretch;gap:0;width:100%;}
  .nav-menu a{display:flex;align-items:center;height:56px;padding:0 14px;border-bottom:1px solid rgba(255,255,255,.08);}
  .nav-menu a::after{display:none;}
  .nav-menu a.is-active{background:rgba(255,91,51,.08);box-shadow:inset 3px 0 0 var(--neon);text-shadow:none;}
  .drawer-cta{display:inline-flex;margin-top:24px;align-self:flex-start;}
  body.nav-open{overflow:hidden;}
}
@media (max-width:768px){
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .page-head{padding:28px 0 44px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:32px;}
  .section-head .note{text-align:left;}
  .svc-item{grid-template-columns:1fr;gap:16px;padding:32px 8px;}
  .svc-num{font-size:34px;}
  .steps{grid-template-columns:1fr;gap:0;}
  .steps::before{display:none;}
  .step{display:grid;grid-template-columns:36px 1fr;gap:16px;padding:18px 0;border-bottom:1px solid var(--line);}
  .step h3{margin-top:6px;}
  .step p{margin-top:4px;grid-column:2;}
  .stats-bar{grid-template-columns:1fr 1fr;}
  .stat{border-left:1px solid var(--line);}
  .stat:nth-child(odd){border-left:0;}
  .stat:nth-child(n+3){border-top:1px solid var(--line);}
  .fit-side{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .cta{padding:56px 0;}
  .form-card{padding:22px;}
}
@media (max-width:520px){
  .brand-main{font-size:18px;}
  .page-head h1{font-size:clamp(26px,7vw,34px);}
  .deco-square{width:72px;height:72px;}
  .stat{padding:24px 18px;}
  .btn{width:100%;}
  .page-head-actions .btn{width:100%;}
  .stats-bar{grid-template-columns:1fr;}
  .stat{border-left:0;}
  .stat + .stat{border-top:1px solid var(--line);}
}
@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important;}
  .js .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
:root{
  --ink:#14100F;
  --ink-deep:#0F0C0B;
  --ink-2:#2A2320;
  --paper:#F6F2EC;
  --paper-2:#FFFFFF;
  --line:rgba(20,16,15,.12);
  --muted:#6E625A;
  --accent:#C2412C;
  --accent-soft:rgba(194,65,44,.10);
  --neon:#FF5B33;
  --sage:#5B6B66;
  --r-s:4px;
  --r-m:10px;
  --r-l:16px;
  --sh-1:0 2px 8px rgba(20,16,15,.06);
  --sh-2:0 14px 36px rgba(20,16,15,.10);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --font-sans:"PingFang SC","Microsoft YaHei","Inter",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 40px;
}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:var(--ink-deep);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:1px;
  background:linear-gradient(90deg,rgba(255,91,51,0),rgba(255,91,51,.45),rgba(255,91,51,0));
}
.header-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:72px;
}
.brand{
  display:inline-flex;
  align-items:baseline;
  gap:6px;
  color:#fff;
  flex-shrink:0;
}
.brand-main{
  font-family:var(--font-serif);
  font-size:20px;
  font-weight:700;
  letter-spacing:.02em;
}
.brand-sub{
  font-family:var(--font-sans);
  font-size:12px;
  letter-spacing:.18em;
  color:rgba(255,255,255,.55);
}
.site-nav{margin-left:auto}
.nav-menu{display:flex;align-items:center;gap:30px}
.nav-menu a{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:15px;
  color:rgba(255,255,255,.72);
  transition:color .2s ease;
  white-space:nowrap;
}
.nav-menu a::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:0;
  height:2px;
  background:var(--neon);
  box-shadow:0 0 10px rgba(255,91,51,.45);
  transition:width .28s cubic-bezier(.2,.7,.3,1);
}
.nav-menu a:hover{color:rgba(255,255,255,.95)}
.nav-menu a:hover::after{width:60%}
.nav-menu a.is-active{
  color:#fff;
  text-shadow:0 0 10px rgba(255,91,51,.45);
}
.nav-menu a.is-active::after{width:100%}
.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
  margin-left:24px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:48px;
  padding:0 28px;
  border-radius:var(--r-s);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{
  background:var(--accent);
  color:#fff;
}
.btn-primary:hover{
  background:#ab3826;
  transform:translateY(-2px);
  box-shadow:var(--sh-1);
}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  background:transparent;
  border-color:var(--ink);
  color:var(--ink);
}
.btn-ghost:hover{
  background:var(--ink);
  color:#fff;
  transform:translateY(-2px);
}
.btn-ghost-light{
  background:transparent;
  border-color:rgba(255,255,255,.32);
  color:#fff;
}
.btn-ghost-light:hover{
  background:rgba(255,255,255,.10);
  border-color:rgba(255,255,255,.6);
  transform:translateY(-2px);
}
.btn-cta{
  height:40px;
  padding:0 20px;
  font-size:14px;
  background:var(--neon);
  color:#fff;
}
.btn-cta:hover{
  background:#ff6f4c;
  box-shadow:0 0 18px rgba(255,91,51,.35);
}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  padding:0;
  border:1px solid rgba(255,255,255,.18);
  border-radius:var(--r-s);
  background:transparent;
  cursor:pointer;
  position:relative;
}
.nav-toggle span{
  position:absolute;
  left:12px;
  width:18px;
  height:2px;
  background:#fff;
  transition:transform .25s ease,opacity .25s ease,top .25s ease;
}
.nav-toggle span:nth-child(1){top:15px}
.nav-toggle span:nth-child(2){top:21px}
.nav-toggle span:nth-child(3){top:27px}
.nav-toggle[aria-expanded="true"] span:nth-child(1){top:21px;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){top:21px;transform:rotate(-45deg)}

.mobile-drawer{
  display:none;
  position:fixed;
  top:0;right:0;
  width:min(84vw,320px);
  height:100%;
  background:var(--ink-deep);
  z-index:200;
  transform:translateX(100%);
  transition:transform .3s cubic-bezier(.2,.7,.3,1);
  padding:88px 20px 32px;
  overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0)}
.mobile-drawer a.drawer-link{
  display:flex;
  align-items:center;
  height:56px;
  padding:0 12px;
  font-size:16px;
  color:rgba(255,255,255,.78);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.mobile-drawer a.drawer-link.is-active{
  color:#fff;
  background:rgba(255,91,51,.08);
  border-left:3px solid var(--neon);
  padding-left:14px;
}
.mobile-drawer .btn{
  width:100%;
  margin-top:24px;
}

/* ============ 页头 ============ */
.page-hero{
  position:relative;
  overflow:hidden;
  background:
    linear-gradient(rgba(20,16,15,.93),rgba(20,16,15,.97)),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  color:#fff;
  padding:88px 0 80px;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  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:64px 64px;
  opacity:.05;
  pointer-events:none;
}
.page-hero::after{
  content:"";
  position:absolute;
  right:-60px;
  bottom:36px;
  width:300px;
  height:1px;
  background:linear-gradient(90deg,rgba(255,91,51,0),var(--neon));
  box-shadow:0 0 12px rgba(255,91,51,.55);
  transform:rotate(-24deg);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:1}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  letter-spacing:.04em;
  color:rgba(255,255,255,.55);
  margin-bottom:28px;
}
.breadcrumb a{transition:color .2s ease}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{color:rgba(255,255,255,.3)}
.breadcrumb .current{color:rgba(255,255,255,.85)}
.page-hero h1{
  font-family:var(--font-serif);
  font-size:clamp(32px,4.2vw,56px);
  line-height:1.14;
  max-width:900px;
}
.page-hero .lead{
  margin-top:22px;
  max-width:660px;
  font-size:17px;
  line-height:1.85;
  color:rgba(255,255,255,.72);
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:36px;
}
.badge{
  display:inline-block;
  font-size:13px;
  letter-spacing:.04em;
  padding:4px 10px;
  border-radius:var(--r-s);
  background:var(--accent-soft);
  color:var(--accent);
}
.badge-sage{
  background:rgba(91,107,102,.10);
  color:var(--sage);
}
.badge-light{
  background:rgba(255,91,51,.14);
  color:#FF8A6B;
}

/* ============ 通用板块 ============ */
.section{padding:96px 0}
.section-lined{border-top:1px solid var(--line)}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:48px;
  padding-bottom:24px;
  border-bottom:1px solid var(--line);
}
.section-head h2{
  font-family:var(--font-serif);
  font-size:clamp(26px,3vw,40px);
  line-height:1.15;
  max-width:640px;
}
.section-head .head-note{
  font-size:13px;
  letter-spacing:.06em;
  color:var(--muted);
  max-width:260px;
  text-align:right;
  flex-shrink:0;
}
.eyebrow{
  display:block;
  font-size:13px;
  letter-spacing:.14em;
  color:var(--sage);
  margin-bottom:14px;
}
.lead-text{
  font-size:17px;
  line-height:1.9;
  color:var(--ink-2);
  max-width:720px;
}
.lead-text + .lead-text{margin-top:1.1em}

/* ============ 概述两栏 ============ */
.overview{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:64px;
  align-items:start;
}
.overview-list{border-top:1px solid var(--line)}
.overview-item{
  display:flex;
  gap:24px;
  padding:26px 0;
  border-bottom:1px solid var(--line);
  transition:background .25s ease,padding-left .25s ease;
}
.overview-item:hover{
  background:var(--paper-2);
  padding-left:12px;
}
.overview-item .num{
  font-family:var(--font-serif);
  font-size:26px;
  line-height:1;
  color:var(--accent);
  opacity:.85;
  flex-shrink:0;
  width:44px;
}
.overview-item h3{
  font-size:19px;
  margin-bottom:8px;
  color:var(--ink-2);
}
.overview-item p{
  font-size:15px;
  line-height:1.8;
  color:var(--muted);
}

/* ============ 案例图集 ============ */
.case-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px 32px;
  align-items:start;
}
.case-featured{
  grid-column:1 / -1;
  position:relative;
  display:block;
  border-radius:var(--r-l);
  overflow:hidden;
  box-shadow:var(--sh-1);
}
.case-featured img{
  width:100%;
  height:360px;
  object-fit:cover;
  transition:transform .4s cubic-bezier(.2,.7,.3,1);
}
.case-featured:hover img{transform:scale(1.03)}
.featured-panel{
  position:absolute;
  left:24px;
  bottom:24px;
  max-width:430px;
  background:var(--paper-2);
  border-radius:var(--r-m);
  padding:22px 26px;
  box-shadow:var(--sh-2);
}
.featured-panel h3{
  font-family:var(--font-serif);
  font-size:22px;
  line-height:1.35;
  margin-bottom:8px;
}
.featured-panel p{
  font-size:14px;
  line-height:1.75;
  color:var(--muted);
}
.case-card{display:block}
.case-card:nth-child(even){margin-top:48px}
.case-media{
  border-radius:var(--r-m);
  overflow:hidden;
  border:1px solid var(--line);
}
.case-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  transition:transform .4s cubic-bezier(.2,.7,.3,1);
}
.case-card.tall .case-media img{aspect-ratio:16/10}
.case-card:hover .case-media img{transform:scale(1.03)}
.case-card:hover h3{color:var(--accent)}
.case-card h3{
  font-family:var(--font-serif);
  font-size:20px;
  line-height:1.4;
  margin-top:18px;
  transition:color .2s ease;
}
.case-meta{
  display:flex;
  align-items:center;
  gap:12px;
  flex-wrap:wrap;
  margin-top:10px;
  font-size:13px;
  letter-spacing:.04em;
  color:var(--muted);
}

/* ============ 数据条 ============ */
.stat-strip{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--r-m);
  overflow:hidden;
}
.stat{
  padding:32px 28px;
  border-right:1px solid var(--line);
  transition:transform .25s ease;
}
.stat:last-child{border-right:none}
.stat:hover{transform:translateY(-3px)}
.stat-num{
  font-family:var(--font-serif);
  font-size:clamp(32px,3.4vw,46px);
  line-height:1;
  color:var(--ink);
}
.stat-num small{
  font-size:15px;
  font-family:var(--font-sans);
  font-weight:600;
  margin-left:4px;
  color:var(--ink-2);
}
.stat-label{
  margin-top:12px;
  font-size:13px;
  letter-spacing:.04em;
  color:var(--muted);
}

/* ============ 流程步骤 ============ */
.steps{
  position:relative;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:32px;
  margin-top:8px;
}
.steps::before{
  content:"";
  position:absolute;
  left:0;right:0;top:20px;
  height:1px;
  background:var(--line);
}
.step{position:relative}
.step-num{
  position:relative;
  z-index:1;
  width:40px;
  height:40px;
  border-radius:50%;
  border:1px solid var(--line);
  background:var(--paper);
  display:grid;
  place-items:center;
  font-family:var(--font-serif);
  font-size:16px;
  color:var(--muted);
  margin-bottom:20px;
}
.step.is-first .step-num{
  background:var(--accent);
  border-color:var(--accent);
  color:#fff;
}
.step h3{
  font-size:18px;
  margin-bottom:8px;
  color:var(--ink-2);
}
.step p{
  font-size:14.5px;
  line-height:1.8;
  color:var(--muted);
}

/* ============ FAQ ============ */
.faq-grid{
  display:grid;
  grid-template-columns:4fr 8fr;
  gap:56px;
  align-items:start;
}
.faq-side h2{
  font-family:var(--font-serif);
  font-size:clamp(26px,3vw,38px);
  line-height:1.18;
  margin-bottom:18px;
}
.faq-side p{
  font-size:15px;
  line-height:1.85;
  color:var(--muted);
  max-width:320px;
}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-top:22px;
  font-size:15px;
  font-weight:600;
  color:var(--accent);
  border-bottom:1px solid var(--accent);
  padding-bottom:2px;
  transition:border-bottom-width .2s ease;
}
.link-arrow:hover{border-bottom-width:2px}
.link-arrow span{transition:transform .2s ease}
.link-arrow:hover span{transform:translateX(4px)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 0;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  cursor:pointer;
  list-style:none;
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";
  font-size:22px;
  line-height:1;
  color:var(--muted);
  transition:transform .22s ease,color .22s ease;
  flex-shrink:0;
}
.faq-item[open] summary{color:var(--accent)}
.faq-item[open] summary::after{transform:rotate(45deg);color:var(--accent)}
.faq-answer{
  font-size:15px;
  line-height:1.85;
  color:var(--muted);
  padding:0 0 22px;
  max-width:720px;
}

/* ============ CTA ============ */
.cta-band{
  background:var(--ink);
  color:#fff;
  padding:80px 0 88px;
}
.cta-inner{
  display:grid;
  grid-template-columns:1fr 420px;
  gap:64px;
  align-items:start;
}
.cta-copy h2{
  font-family:var(--font-serif);
  font-size:clamp(26px,3vw,40px);
  line-height:1.18;
}
.cta-copy > p{
  margin-top:18px;
  font-size:16px;
  line-height:1.85;
  color:rgba(255,255,255,.72);
  max-width:520px;
}
.cta-points{margin-top:28px;display:grid;gap:14px}
.cta-points li{
  position:relative;
  padding-left:20px;
  font-size:15px;
  line-height:1.8;
  color:rgba(255,255,255,.78);
}
.cta-points li::before{
  content:"";
  position:absolute;
  left:0;
  top:11px;
  width:6px;
  height:6px;
  background:var(--accent);
  border-radius:1px;
}
.form-panel{
  background:var(--paper-2);
  color:var(--ink);
  border-radius:var(--r-m);
  padding:28px;
  box-shadow:var(--sh-2);
}
.form-panel h3{
  font-size:18px;
  margin-bottom:6px;
}
.form-panel .form-note{
  font-size:13px;
  color:var(--muted);
  margin-bottom:20px;
}
.field{margin-bottom:16px}
.field label{
  display:block;
  font-size:13px;
  color:var(--muted);
  margin-bottom:6px;
  letter-spacing:.04em;
}
.field input,
.field textarea{
  width:100%;
  height:48px;
  padding:0 16px;
  font-family:inherit;
  font-size:15px;
  color:var(--ink);
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-s);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{
  height:100px;
  padding:12px 16px;
  line-height:1.7;
  resize:vertical;
}
.field input::placeholder,
.field textarea::placeholder{color:var(--muted)}
.field input:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(194,65,44,.15);
}
.form-panel .btn{width:100%}
.form-panel .form-tip{
  margin-top:12px;
  font-size:12.5px;
  color:var(--muted);
  text-align:center;
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink-deep);
  color:rgba(255,255,255,.72);
  padding-top:72px;
  border-top:1px solid rgba(255,255,255,.10);
}
.footer-grid{
  display:grid;
  grid-template-columns:4fr 3fr 3fr 2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{
  font-size:14px;
  line-height:1.85;
  color:rgba(255,255,255,.6);
  max-width:320px;
}
.footer-col h4{
  font-size:13px;
  letter-spacing:.08em;
  color:#fff;
  margin-bottom:18px;
  font-weight:600;
}
.footer-col ul{
  display:grid;
  gap:10px;
  font-size:14px;
  padding-left:12px;
}
.footer-col a{
  position:relative;
  color:rgba(255,255,255,.72);
  transition:color .2s ease;
}
.footer-col a:hover{color:#fff}
.footer-col a:hover::before{
  content:"";
  position:absolute;
  left:-10px;
  top:50%;
  transform:translateY(-50%);
  width:1px;
  height:14px;
  background:var(--neon);
  box-shadow:0 0 8px rgba(255,91,51,.6);
}
.footer-contact li{
  color:rgba(255,255,255,.64);
  font-size:13.5px;
  line-height:1.7;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);
  padding:20px 0 28px;
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:rgba(255,255,255,.5);
}

/* ============ 动效 ============ */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .3s cubic-bezier(.2,.7,.3,1),transform .3s cubic-bezier(.2,.7,.3,1);
}
.reveal.is-in{
  opacity:1;
  transform:none;
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .container{padding:0 24px}
  .section{padding:72px 0}
  .overview{grid-template-columns:1fr;gap:40px}
  .faq-grid{grid-template-columns:1fr;gap:32px}
  .faq-side p{max-width:none}
  .cta-inner{grid-template-columns:1fr;gap:40px}
  .stat-strip{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(2){border-right:none}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line)}
  .steps{grid-template-columns:repeat(2,1fr);gap:32px 24px}
  .steps::before{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}

@media (max-width:768px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .site-nav,.header-actions .btn-cta{display:none}
  .nav-toggle{display:block}
  .header-actions{margin-left:auto;gap:0}
  .header-inner{height:60px;gap:16px}
  .brand-main{font-size:18px}
  .mobile-drawer{display:block}
  .page-hero{padding:56px 0 52px}
  .page-hero .lead{font-size:16px;margin-top:18px}
  .page-hero::after{width:180px;right:-40px;bottom:16px}
  .hero-actions{margin-top:28px}
  .hero-actions .btn{height:44px;padding:0 20px;font-size:14px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:36px;padding-bottom:18px}
  .section-head .head-note{text-align:left;max-width:none}
  .case-grid{grid-template-columns:1fr;gap:40px}
  .case-card:nth-child(even){margin-top:0}
  .case-featured img{height:240px}
  .featured-panel{
    position:static;
    max-width:none;
    box-shadow:none;
    border-radius:0;
    border-top:1px solid var(--line);
    padding:18px 20px 20px;
  }
  .stat-strip{grid-template-columns:repeat(2,1fr)}
  .stat{padding:24px 20px}
  .steps{grid-template-columns:1fr;gap:28px}
  .cta-band{padding:56px 0 64px}
  .form-panel{padding:22px}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:36px}
  .footer-bottom{flex-direction:column;gap:8px}
}

@media (max-width:520px){
  .brand-sub{letter-spacing:.12em}
  .page-hero h1{font-size:28px}
  .overview-item{gap:16px}
  .overview-item .num{font-size:22px;width:34px}
  .stat-strip{grid-template-columns:1fr}
  .stat{border-right:none;border-bottom:1px solid var(--line)}
  .stat:last-child{border-bottom:none}
  .btn{width:100%}
  .hero-actions{flex-direction:column}
  .nav-toggle{width:40px;height:40px}
  .nav-toggle span{left:11px}
}

@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  .reveal{opacity:1;transform:none}
  .nav-menu a.is-active{text-shadow:none}
  .nav-menu a::after{box-shadow:none}
}

/* roulang page: category3 */
:root{
  --ink:#14100F;
  --ink-deep:#0F0C0B;
  --ink-2:#2A2320;
  --paper:#F6F2EC;
  --paper-2:#FFFFFF;
  --line:rgba(20,16,15,.12);
  --line-strong:rgba(20,16,15,.18);
  --muted:#6E625A;
  --accent:#C2412C;
  --accent-dark:#A9361F;
  --accent-soft:rgba(194,65,44,.10);
  --neon:#FF5B33;
  --sage:#5B6B66;
  --sage-soft:rgba(91,107,102,.10);
  --r-s:4px;
  --r-m:10px;
  --r-l:16px;
  --sh-1:0 2px 8px rgba(20,16,15,.06);
  --sh-2:0 14px 36px rgba(20,16,15,.10);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Inter",system-ui,-apple-system,sans-serif;
  --sec:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-family:var(--serif);color:var(--ink);letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 40px;
}
.section{padding:var(--sec) 0}
.section--tight{padding:64px 0}
.section-line{border-top:1px solid var(--line)}
.eyebrow{
  font-family:var(--sans);
  font-size:13px;
  letter-spacing:.14em;
  color:var(--sage);
  text-transform:uppercase;
  margin-bottom:16px;
}
.sec-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:40px;
}
.sec-head h2{font-size:clamp(26px,3vw,38px);line-height:1.18}
.sec-head p{font-size:13px;color:var(--muted);letter-spacing:.04em;max-width:320px;text-align:right}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:var(--ink-deep);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:1px;
  background:linear-gradient(90deg,rgba(255,91,51,0),rgba(255,91,51,.45),rgba(255,91,51,0));
  pointer-events:none;
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:72px;
}
.brand{
  display:inline-flex;
  align-items:baseline;
  gap:6px;
  white-space:nowrap;
}
.brand-main{
  font-family:var(--serif);
  font-size:21px;
  font-weight:700;
  color:#fff;
  letter-spacing:.02em;
}
.brand-sub{
  font-family:var(--sans);
  font-size:12px;
  letter-spacing:.18em;
  color:rgba(255,255,255,.55);
}
.main-nav{margin-left:auto}
.nav-menu{
  display:flex;
  align-items:center;
  gap:34px;
}
.nav-menu a{
  position:relative;
  display:block;
  padding:24px 0;
  font-size:15px;
  color:rgba(255,255,255,.72);
  transition:color .25s ease;
}
.nav-menu a::after{
  content:"";
  position:absolute;
  left:0;
  bottom:16px;
  height:2px;
  width:0;
  background:var(--neon);
  box-shadow:0 0 10px rgba(255,91,51,.55);
  transition:width .3s cubic-bezier(.2,.7,.3,1);
}
.nav-menu a:hover{color:rgba(255,255,255,.96)}
.nav-menu a:hover::after{width:60%}
.nav-menu a.is-active{
  color:#fff;
  text-shadow:0 0 10px rgba(255,91,51,.45);
}
.nav-menu a.is-active::after{width:100%}
.header-actions{display:flex;align-items:center;gap:14px}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 28px;
  border-radius:var(--r-s);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:var(--sh-1)}
.btn-outline{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-outline:hover{background:var(--ink);color:#fff}
.btn-neon{
  background:var(--neon);
  color:#fff;
  height:40px;
  padding:0 20px;
  font-size:14px;
}
.btn-neon:hover{background:#FF7043;transform:translateY(-2px);box-shadow:0 0 18px rgba(255,91,51,.45)}
.btn-ghost-light{
  background:transparent;
  color:#fff;
  border-color:rgba(255,255,255,.4);
}
.btn-ghost-light:hover{background:#fff;color:var(--ink);border-color:#fff}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  padding:0;
  background:transparent;
  border:1px solid rgba(255,255,255,.24);
  border-radius:var(--r-s);
  cursor:pointer;
  position:relative;
}
.nav-toggle span{
  position:absolute;
  left:11px;
  width:18px;
  height:1.5px;
  background:#fff;
  transition:transform .25s ease,opacity .25s ease,top .25s ease;
}
.nav-toggle span:nth-child(1){top:14px}
.nav-toggle span:nth-child(2){top:20px}
.nav-toggle span:nth-child(3){top:26px}
.nav-toggle.is-open span:nth-child(1){top:20px;transform:rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){top:20px;transform:rotate(-45deg)}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(15,12,11,.62);
  opacity:0;pointer-events:none;
  transition:opacity .3s ease;
  z-index:110;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;
  top:0;right:0;bottom:0;
  width:min(84vw,340px);
  background:var(--ink-deep);
  transform:translateX(100%);
  transition:transform .32s cubic-bezier(.2,.7,.3,1);
  z-index:120;
  padding:88px 24px 32px;
  overflow-y:auto;
}
.drawer.is-open{transform:none}
.drawer ul{display:flex;flex-direction:column}
.drawer ul a{
  display:flex;
  align-items:center;
  min-height:56px;
  padding:0 12px;
  font-size:16px;
  color:rgba(255,255,255,.78);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.drawer ul a.is-active{
  color:#fff;
  border-left:3px solid var(--neon);
  background:rgba(255,91,51,.08);
  padding-left:16px;
}
.drawer .drawer-cta{margin-top:24px;width:100%}

/* ============ 面包屑 ============ */
.crumbs{
  display:flex;
  justify-content:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  padding-top:28px;
}
.crumbs a{color:var(--muted);transition:color .2s ease}
.crumbs a:hover{color:var(--accent)}
.crumbs .sep{color:rgba(20,16,15,.28)}
.crumbs .current{color:var(--ink);font-weight:600}

/* ============ 分类页头（居中版） ============ */
.cat-head{
  padding:20px 0 56px;
  text-align:center;
  border-bottom:1px solid var(--line);
}
.cat-head .eyebrow{margin-bottom:18px}
.cat-head h1{
  max-width:900px;
  margin:0 auto;
  font-size:clamp(30px,4.2vw,52px);
  line-height:1.16;
  font-weight:700;
}
.head-rule{
  width:48px;
  height:3px;
  background:var(--accent);
  margin:26px auto 24px;
}
.cat-head .lead{
  max-width:660px;
  margin:0 auto;
  font-size:16px;
  color:var(--muted);
  line-height:1.85;
}

/* ============ 筛选标签 ============ */
.filter-bar{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:36px;
}
.chip{
  display:inline-flex;
  align-items:center;
  height:36px;
  padding:0 16px;
  border:1px solid var(--line);
  border-radius:var(--r-s);
  background:var(--paper-2);
  font-size:13px;
  letter-spacing:.04em;
  color:var(--ink-2);
  cursor:pointer;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.chip:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.chip.is-on{background:var(--ink);color:#fff;border-color:var(--ink)}

/* ============ 徽章 ============ */
.badge{
  display:inline-block;
  padding:4px 10px;
  border-radius:var(--r-s);
  background:var(--accent-soft);
  color:var(--accent);
  font-size:13px;
  letter-spacing:.04em;
  line-height:1.5;
}
.badge--sage{background:var(--sage-soft);color:var(--sage)}

/* ============ 精选：左大卡 + 右列表 ============ */
.featured{
  display:grid;
  grid-template-columns:1.28fr 1fr;
  gap:36px;
  align-items:start;
}
.card{
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--r-m);
  overflow:hidden;
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.card:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh-2);
  border-color:var(--line-strong);
}
.card-media{
  overflow:hidden;
  border-radius:0;
}
.card-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .4s cubic-bezier(.2,.7,.3,1);
}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:22px 22px 20px}
.card-body h3{
  font-size:clamp(19px,1.7vw,22px);
  line-height:1.42;
  margin:14px 0 10px;
  transition:color .25s ease;
}
.card:hover .card-body h3{color:var(--accent)}
.card-body p{
  font-size:15px;
  color:var(--muted);
  line-height:1.75;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-top:18px;
  font-size:13px;
  color:var(--muted);
  letter-spacing:.04em;
}
.card-foot .arrow{
  color:var(--accent);
  transition:transform .25s ease;
}
.card:hover .card-foot .arrow{transform:translateX(4px)}
.feature-card .card-media{aspect-ratio:16/10}

.side-list{
  display:flex;
  flex-direction:column;
  border-top:1px solid var(--line);
}
.side-item{
  display:grid;
  grid-template-columns:96px 1fr;
  gap:16px;
  padding:18px 0;
  border-bottom:1px solid var(--line);
  transition:background-color .25s ease,transform .25s ease;
}
.side-item:hover{background:var(--paper-2);transform:translateX(4px)}
.side-thumb{
  width:96px;
  height:72px;
  border-radius:var(--r-s);
  overflow:hidden;
  background:var(--paper);
  border:1px solid var(--line);
}
.side-thumb img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .4s cubic-bezier(.2,.7,.3,1);
}
.side-item:hover .side-thumb img{transform:scale(1.06)}
.side-text h3{
  font-size:17px;
  line-height:1.5;
  font-family:var(--serif);
  margin:8px 0 6px;
  transition:color .25s ease;
}
.side-item:hover .side-text h3{color:var(--accent)}
.side-meta{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--muted);
  letter-spacing:.04em;
}

/* ============ 2×2 网格 ============ */
.grid-2{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:28px;
}
.grid-2 .card-media{aspect-ratio:16/10}

/* ============ 分页 ============ */
.pagination{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  margin-top:48px;
}
.page-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:36px;height:36px;
  border-radius:50%;
  border:1px solid var(--line);
  background:var(--paper-2);
  color:var(--ink-2);
  font-size:14px;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.page-btn:hover{border-color:var(--ink);transform:translateY(-2px)}
.page-btn.is-current{
  background:var(--accent);
  border-color:var(--accent);
  color:#fff;
}
.page-next{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:36px;
  padding:0 16px;
  border-radius:18px;
  border:1px solid var(--line);
  background:var(--paper-2);
  color:var(--ink-2);
  font-size:14px;
  transition:border-color .2s ease,transform .2s ease;
}
.page-next:hover{border-color:var(--ink);transform:translateY(-2px)}

/* ============ FAQ ============ */
.faq-wrap{
  display:grid;
  grid-template-columns:4fr 8fr;
  gap:48px;
  align-items:start;
}
.faq-intro h2{font-size:clamp(26px,3vw,36px);line-height:1.2;margin-bottom:16px}
.faq-intro p{font-size:15px;color:var(--muted);max-width:320px}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-top:22px;
  font-size:15px;
  color:var(--accent);
  border-bottom:1px solid rgba(194,65,44,.4);
  padding-bottom:2px;
  transition:border-color .2s ease,color .2s ease;
}
.text-link:hover{border-bottom-width:2px;border-color:var(--accent)}
.text-link .arrow{transition:transform .25s ease}
.text-link:hover .arrow{transform:translateX(4px)}
.accordion{border-top:1px solid var(--line)}
.acc-item{border-bottom:1px solid var(--line)}
.acc-trigger{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  width:100%;
  min-height:64px;
  padding:16px 4px;
  background:transparent;
  border:0;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  cursor:pointer;
  transition:color .22s ease,background-color .22s ease;
}
.acc-trigger:hover{color:var(--accent)}
.acc-item.is-open .acc-trigger{color:var(--accent)}
.acc-icon{
  position:relative;
  flex:0 0 auto;
  width:16px;height:16px;
  transition:transform .22s ease;
}
.acc-icon::before,
.acc-icon::after{
  content:"";
  position:absolute;
  background:currentColor;
}
.acc-icon::before{left:0;top:7px;width:16px;height:1.6px}
.acc-icon::after{left:7px;top:0;width:1.6px;height:16px;transition:opacity .22s ease}
.acc-item.is-open .acc-icon{transform:rotate(45deg)}
.acc-panel{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s cubic-bezier(.2,.7,.3,1);
}
.acc-panel .inner{
  padding:0 4px 20px;
  font-size:15px;
  line-height:1.85;
  color:var(--muted);
  max-width:640px;
}

/* ============ CTA 细条 ============ */
.cta-strip{
  background:var(--ink);
  color:#fff;
  padding:56px 0;
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
}
.cta-inner h2{
  color:#fff;
  font-size:clamp(22px,2.4vw,30px);
  line-height:1.3;
  margin-bottom:10px;
}
.cta-inner p{
  color:rgba(255,255,255,.7);
  font-size:15px;
  max-width:560px;
}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink-deep);
  color:rgba(255,255,255,.72);
  border-top:1px solid rgba(255,255,255,.10);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:4fr 3fr 3fr 2fr;
  gap:36px;
  padding-bottom:48px;
}
.footer-brand .brand{margin-bottom:16px;display:inline-flex}
.footer-brand p{
  font-size:14px;
  line-height:1.8;
  color:rgba(255,255,255,.6);
  max-width:300px;
}
.footer-col h4{
  font-family:var(--sans);
  font-size:13px;
  letter-spacing:.08em;
  color:#fff;
  margin-bottom:16px;
  font-weight:600;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{
  font-size:14px;
  color:rgba(255,255,255,.72);
  transition:color .2s ease,padding-left .2s ease;
  display:inline-block;
  border-left:1px solid transparent;
}
.footer-col a:hover{
  color:#fff;
  padding-left:6px;
  border-left:1px solid var(--neon);
}
.footer-contact li{font-size:14px;color:rgba(255,255,255,.72);line-height:1.8}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:12px;
  border-top:1px solid rgba(255,255,255,.10);
  padding:22px 0 28px;
  font-size:13px;
  color:rgba(255,255,255,.5);
}

/* ============ 进入视口动效 ============ */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .3s cubic-bezier(.2,.7,.3,1),transform .3s cubic-bezier(.2,.7,.3,1);
}
.reveal.is-in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  :root{--sec:72px}
  .container{padding:0 24px}
  .featured{grid-template-columns:1fr;gap:32px}
  .faq-wrap{grid-template-columns:1fr;gap:28px}
  .faq-intro p{max-width:none}
  .footer-grid{grid-template-columns:2fr 1fr 1fr;row-gap:32px}
  .footer-col:last-child{grid-column:span 3}
  .main-nav{display:none}
  .nav-toggle{display:block}
  .header-actions .btn-neon{display:none}
}
@media (max-width:768px){
  :root{--sec:56px}
  .container{padding:0 18px}
  .header-inner{min-height:60px}
  .brand-main{font-size:18px}
  .nav-menu{gap:20px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:28px}
  .sec-head p{text-align:left;max-width:none}
  .cat-head{padding:16px 0 40px}
  .crumb-line{padding-top:18px}
  .grid-2{grid-template-columns:1fr}
  .side-item{grid-template-columns:80px 1fr}
  .side-thumb{width:80px;height:64px}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-col:last-child{grid-column:span 2}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .cat-head .lead{font-size:15px}
}
@media (max-width:520px){
  .filter-bar{gap:8px}
  .chip{height:32px;padding:0 12px;font-size:12px}
  .page-btn{width:32px;height:32px;font-size:13px}
  .card-body{padding:18px 18px 16px}
  .side-item{grid-template-columns:1fr;gap:10px}
  .side-thumb{width:100%;height:120px}
  .footer-grid{grid-template-columns:1fr}
  .footer-col:last-child{grid-column:span 1}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
  }
  .reveal{opacity:1;transform:none}
  .nav-menu a.is-active{text-shadow:none}
  .btn-neon:hover{box-shadow:none}
}