/* roulang page: index */
:root{
  --brand:#0E3B33;
  --brand-dark:#092A24;
  --accent:#D2542B;
  --neutral:#7A8C87;
  --bg:#F6F4EF;
  --surface:#FFFFFF;
  --ink:#101413;
  --body:#3A423F;
  --sub:#6B7672;
  --line:#E3DED4;
  --r-card:14px;
  --r-input:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh:0 1px 2px rgba(16,20,19,.05), 0 12px 32px -18px rgba(16,20,19,.18);
  --sh-hover:0 18px 40px -20px rgba(16,20,19,.28);
  --sec:96px;
  --font-head:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
  --font-body:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans CJK SC",sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--body);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);border:1px solid var(--line);}
a{color:var(--brand);text-decoration:none;transition:color .18s ease,background-color .18s ease;}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4{font-family:var(--font-head);color:var(--ink);margin:0 0 .6em;letter-spacing:-.02em;}
h1{font-size:clamp(30px,4.2vw,48px);line-height:1.2;font-weight:800;}
h2{font-size:clamp(24px,2.6vw,34px);line-height:1.25;font-weight:700;}
h3{font-size:20px;line-height:1.4;font-weight:700;}
p{margin:0 0 1.1em;}
ul,ol{margin:0 0 1.1em;padding-left:1.2em;}
li{margin-bottom:.4em;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:3px solid rgba(210,84,43,.4);outline-offset:2px;}
.num{font-variant-numeric:tabular-nums;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:var(--sec) 0;}
.section--tight{padding:calc(var(--sec) * .66) 0;}
.sec-head{max-width:720px;margin-bottom:44px;}
.sec-head p{margin-bottom:0;color:var(--sub);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--accent);
  letter-spacing:.06em;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,244,239,.96);
  border-bottom:1px solid transparent;
  transition:box-shadow .22s ease,border-color .22s ease,background-color .22s ease;
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 6px 22px -16px rgba(16,20,19,.35);
  background:#F6F4EF;
}
.nav-wrap{
  display:flex;align-items:center;gap:24px;
  min-height:72px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{width:34px;height:34px;flex:0 0 auto;}
.brand-text{font-family:var(--font-head);font-weight:800;font-size:17px;color:var(--brand);letter-spacing:-.01em;white-space:nowrap;}
.chip-nav-wrap{flex:1 1 auto;min-width:0;position:relative;}
.chip-nav{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;}
.chip-nav::-webkit-scrollbar{display:none;}
.chip{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:44px;padding:0 18px;
  border:1px solid var(--line);border-radius:var(--r-pill);
  background:transparent;color:var(--body);
  font-size:14px;font-weight:600;white-space:nowrap;
  transition:background-color .16s ease,color .16s ease,border-color .16s ease;
}
.chip:hover{background:rgba(14,59,51,.08);color:var(--brand);border-color:rgba(14,59,51,.2);}
.chip.is-active{background:var(--brand);border-color:var(--brand);color:#fff;}
.chip.is-active:hover{background:var(--brand-dark);color:#fff;}
.nav-right{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;
  align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:var(--r-input);
  background:#fff;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--brand);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 28px;
  border-radius:var(--r-input);border:1.5px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-hover);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh);}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand);}
.btn-ghost:hover{background:rgba(14,59,51,.08);color:var(--brand-dark);}
.btn-block{width:100%;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand);
}
.link-arrow::after{content:"→";transition:transform .18s ease;}
.link-arrow:hover{text-decoration:underline;text-underline-offset:3px;}
.link-arrow:hover::after{transform:translateX(3px);}

/* ============ Hero ============ */
.hero{padding:72px 0 var(--sec);}
.hero-copy h1{margin-bottom:20px;max-width:15em;}
.hero-copy .lead{font-size:17px;line-height:1.8;color:var(--sub);max-width:34em;margin-bottom:30px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:22px;}
.trust-row{
  font-size:13px;color:var(--sub);line-height:1.6;
  display:flex;flex-wrap:wrap;align-items:center;gap:6px 10px;
}
.trust-row span{display:inline-flex;align-items:center;gap:10px;}
.trust-row span:not(:last-child)::after{content:"·";color:var(--neutral);}
.hero-media{position:relative;}
.hero-media img{aspect-ratio:4 / 3;width:100%;object-fit:cover;}
.hero-media::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-img);
  background:rgba(14,59,51,.04);pointer-events:none;
}
.img-note{font-size:13px;color:var(--sub);text-align:center;margin:10px 0 0;}

/* ============ 痛点问题 ============ */
.pain-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.q-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  border-left:3px solid var(--brand);
  padding:26px 28px;box-shadow:var(--sh);
}
.q-card .q-no{
  font-size:14px;font-weight:800;color:var(--accent);
  letter-spacing:.08em;margin-bottom:10px;font-variant-numeric:tabular-nums;
}
.q-card h3{font-size:18px;margin-bottom:8px;}
.q-card p{margin-bottom:0;font-size:15px;color:var(--sub);}

/* ============ 方案交错卡 ============ */
.solution-row{margin-bottom:24px;}
.solution-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh);padding:30px;height:100%;
  display:flex;flex-direction:column;gap:14px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.solution-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:rgba(14,59,51,.3);}
.solution-card .index{
  font-size:13px;font-weight:700;color:var(--neutral);letter-spacing:.1em;
  font-variant-numeric:tabular-nums;
}
.solution-card h3{margin-bottom:0;}
.solution-card p{margin-bottom:0;font-size:15px;color:var(--body);}
.solution-card img{aspect-ratio:16 / 9;object-fit:cover;margin-bottom:4px;}
.solution-card .link-arrow{margin-top:auto;}

/* ============ 数据条带 ============ */
.band{
  background:rgba(14,59,51,.06);
  padding:calc(var(--sec) * .7) 0;
}
.stat{text-align:left;padding:6px 0;}
.stat .figure{
  font-size:clamp(40px,4.4vw,56px);line-height:1.05;font-weight:800;
  color:var(--accent);font-variant-numeric:tabular-nums;font-family:var(--font-head);
}
.stat .figure small{font-size:20px;font-weight:700;margin-left:4px;}
.stat .label{font-size:13px;color:var(--sub);margin-top:10px;line-height:1.6;}

/* ============ 表单 ============ */
.form-panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh);padding:32px;
}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink);margin-bottom:8px;}
.field input[type="text"],
.field input[type="tel"],
.field select,
.field textarea{
  width:100%;height:46px;padding:0 14px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-input);
  color:var(--ink);transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{height:auto;min-height:96px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--brand);box-shadow:0 0 0 3px rgba(14,59,51,.2);outline:none;
}
.field .hint{font-size:13px;color:var(--sub);margin-top:6px;}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--sub);margin-bottom:20px;}
.check-row input{width:18px;height:18px;margin-top:3px;accent-color:var(--brand);flex:0 0 auto;}
.check-row a{text-decoration:underline;text-underline-offset:3px;}
.form-actions{display:flex;justify-content:flex-end;}

/* ============ 隐私说明 ============ */
.privacy-note{
  font-size:13px;color:var(--sub);line-height:1.7;
  border-top:1px solid var(--line);padding-top:20px;margin-top:6px;
}
.privacy-note + .privacy-note{border-top:none;padding-top:6px;margin-top:0;}

/* ============ 资讯列表 ============ */
.list-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:36px;}
.list-head .sec-head{margin-bottom:0;}
.post-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh);overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:rgba(14,59,51,.3);}
.post-card img{aspect-ratio:3 / 2;object-fit:cover;border:none;border-radius:0;border-bottom:1px solid var(--line);}
.post-card .body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto;}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--r-pill);font-size:13px;font-weight:600;
  background:rgba(210,84,43,.1);color:var(--accent);
}
.post-card h3{font-size:18px;margin-bottom:0;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card .excerpt{
  font-size:15px;color:var(--sub);margin-bottom:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card .meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--sub);
}
.post-card .meta .link-arrow{font-size:13px;}
.post-card:hover h3{color:var(--brand);}
.empty-state{
  text-align:center;padding:56px 24px;background:var(--surface);
  border:1px dashed var(--line);border-radius:var(--r-card);
}
.empty-state .mark{font-size:30px;color:var(--neutral);line-height:1;margin-bottom:14px;}
.empty-state p{color:var(--sub);margin-bottom:18px;}

/* ============ FAQ ============ */
.accordion{border:none;background:transparent;}
.acc-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  margin-bottom:12px;overflow:hidden;
}
.acc-title{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 26px;background:transparent;border:none;cursor:pointer;text-align:left;
  font-size:17px;font-weight:700;color:var(--ink);font-family:var(--font-head);
  transition:background-color .18s ease,color .18s ease;min-height:44px;
}
.acc-title:hover{background:rgba(14,59,51,.05);}
.acc-title .sign{
  flex:0 0 auto;width:20px;height:20px;position:relative;transition:transform .2s ease;
}
.acc-title .sign::before,.acc-title .sign::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;
}
.acc-title .sign::before{left:0;top:9px;width:20px;height:2px;}
.acc-title .sign::after{left:9px;top:0;width:2px;height:20px;}
.acc-item.is-open .acc-title{color:var(--brand);border-left:3px solid var(--brand);padding-left:23px;}
.acc-item.is-open .sign{transform:rotate(45deg);}
.acc-panel{display:none;padding:0 26px 22px 26px;font-size:15px;line-height:1.8;color:var(--body);}
.acc-item.is-open .acc-panel{display:block;}
.acc-panel p:last-child{margin-bottom:0;}

/* ============ CTA 区 ============ */
.cta-band{
  background:var(--brand);color:#fff;border-radius:var(--r-card);
  padding:48px 40px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
}
.cta-band h2{color:#fff;margin-bottom:8px;}
.cta-band p{color:rgba(255,255,255,.78);margin-bottom:0;font-size:15px;}
.cta-band .btn-primary{background:#fff;color:var(--brand);}
.cta-band .btn-primary:hover{background:#F1EFE8;color:var(--brand-dark);}

/* ============ 弹层 ============ */
.reveal{
  width:min(480px,calc(100vw - 32px));
  border-radius:16px;border:1px solid var(--line);
  padding:32px;background:var(--surface);box-shadow:var(--sh-hover);
}
.reveal h2{font-size:22px;margin-bottom:8px;}
.reveal .modal-lead{font-size:14px;color:var(--sub);margin-bottom:22px;}
.reveal .close-button{
  position:absolute;top:8px;right:8px;width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  font-size:22px;line-height:1;color:var(--sub);background:transparent;border:none;cursor:pointer;border-radius:var(--r-input);
}
.reveal .close-button:hover{background:rgba(14,59,51,.07);color:var(--brand);}
.reveal-overlay{background:rgba(16,20,19,.55);backdrop-filter:blur(2px);}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-dark);color:rgba(255,255,255,.78);margin-top:var(--sec);padding:64px 0 0;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;font-family:var(--font-head);}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-text{color:#fff;}
.footer-desc{font-size:13px;line-height:1.7;max-width:32em;color:rgba(255,255,255,.7);}
.footer-links{list-style:none;padding:0;margin:0;}
.footer-links li{margin-bottom:10px;}
.footer-links a{color:rgba(255,255,255,.78);font-size:14px;}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);margin-top:48px;padding:22px 0;
  display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.7);}
.footer-bottom a:hover{color:#fff;}

/* ============ 动效 ============ */
.rise{opacity:0;transform:translateY(12px);}
.rise.is-in{opacity:1;transform:none;transition:opacity .34s cubic-bezier(.2,.7,.2,1),transform .34s cubic-bezier(.2,.7,.2,1);}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  :root{--sec:72px;}
  .container{padding:0 24px;}
  .chip-nav-wrap::after{
    content:"";position:absolute;right:0;top:0;bottom:0;width:36px;
    background:linear-gradient(90deg,rgba(246,244,239,0),rgba(246,244,239,.95));pointer-events:none;
  }
  .solution-card{padding:26px;}
}
@media (max-width:640px){
  :root{--sec:56px;}
  .container{padding:0 20px;}
  .nav-wrap{min-height:60px;gap:12px;}
  .chip-nav-wrap{display:none;}
  .nav-toggle{display:flex;}
  .nav-right .btn{display:none;}
  .site-header.is-open .chip-nav-wrap{
    display:block;position:absolute;left:0;right:0;top:60px;
    background:#F6F4EF;border-bottom:1px solid var(--line);
    box-shadow:0 18px 30px -24px rgba(16,20,19,.5);padding:14px 20px 18px;
  }
  .site-header.is-open .chip-nav{flex-direction:column;align-items:stretch;overflow:visible;}
  .site-header.is-open .chip{justify-content:flex-start;width:100%;}
  .site-header.is-open .chip-nav-wrap::after{display:none;}
  .hero{padding:40px 0 var(--sec);}
  .hero-media img{aspect-ratio:16 / 9;}
  .pain-grid{grid-template-columns:1fr;gap:16px;}
  .q-card{padding:22px 20px;}
  .form-panel{padding:22px 20px;}
  .form-actions{justify-content:stretch;}
  .form-actions .btn{width:100%;}
  .cta-band{padding:32px 24px;border-radius:14px;}
  .list-head{flex-direction:column;align-items:flex-start;}
  .acc-title{padding:18px 20px;font-size:16px;}
  .acc-panel{padding:0 20px 18px;}
  .acc-item.is-open .acc-title{padding-left:17px;}
  .site-footer{padding-top:44px;}
  .reveal{
    width:100%;max-width:100%;left:0;right:0;bottom:0;top:auto;
    border-radius:16px 16px 0 0;padding:26px 20px calc(26px + env(safe-area-inset-bottom));
    transform:none !important;
  }
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .rise{opacity:1;transform:none;}
}

/* roulang page: article */
:root{
  --brand:#0E3B33;
  --brand-deep:#092A24;
  --brand-wash:rgba(14,59,51,.06);
  --accent:#D2542B;
  --muted:#7A8C87;
  --bg:#F6F4EF;
  --surface:#FFFFFF;
  --ink:#101413;
  --text:#3A423F;
  --text-soft:#6B7672;
  --line:#E3DED4;
  --radius:14px;
  --radius-sm:10px;
  --radius-pill:999px;
  --shadow:0 1px 2px rgba(16,20,19,.05), 0 12px 32px -18px rgba(16,20,19,.18);
  --shadow-hover:0 18px 40px -20px rgba(16,20,19,.28);
  --gap:24px;
  --font-head:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
  --font-body:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-body);font-size:16px;line-height:1.85;letter-spacing:.01em;}
h1,h2,h3,h4{font-family:var(--font-head);color:var(--ink);margin:0 0 .6em;letter-spacing:-.01em;}
h1{font-size:clamp(30px,4.2vw,48px);line-height:1.2;font-weight:800;letter-spacing:-.02em;}
h2{font-size:clamp(24px,2.6vw,34px);line-height:1.25;font-weight:700;}
h3{font-size:20px;line-height:1.4;font-weight:700;}
p{margin:0 0 1.1em;}
a{color:var(--brand);text-decoration:none;transition:color .18s cubic-bezier(.2,.7,.2,1),background-color .18s cubic-bezier(.2,.7,.2,1);}
a:hover{color:var(--brand-deep);}
img{max-width:100%;display:block;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
strong{color:var(--ink);font-weight:700;}
:focus-visible{outline:3px solid rgba(210,84,43,.4);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(246,244,239,.96);border-bottom:1px solid transparent;transition:box-shadow .2s,border-color .2s;}
.site-header.is-stuck{border-bottom-color:var(--line);box-shadow:0 8px 24px -20px rgba(16,20,19,.5);}
.nav-wrap{display:flex;align-items:center;gap:20px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{width:36px;height:36px;flex:0 0 auto;}
.brand-text{font-family:var(--font-head);font-weight:800;font-size:17px;color:var(--ink);letter-spacing:-.01em;white-space:nowrap;}
.chip-nav-wrap{flex:1 1 auto;min-width:0;position:relative;overflow:hidden;}
.chip-nav{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;padding:4px 2px;}
.chip-nav::-webkit-scrollbar{display:none;}
.chip{display:inline-flex;align-items:center;height:34px;padding:0 16px;border:1px solid var(--line);border-radius:var(--radius-pill);font-size:14px;font-weight:600;color:var(--text);background:transparent;white-space:nowrap;transition:background-color .16s,color .16s,border-color .16s;}
.chip:hover{background:var(--brand-wash);color:var(--brand);border-color:rgba(14,59,51,.25);}
.chip.is-active{background:var(--brand);border-color:var(--brand);color:#fff;}
.chip.is-active:hover{background:var(--brand-deep);color:#fff;}
.nav-right{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface);position:relative;cursor:pointer;}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{position:absolute;left:50%;transform:translateX(-50%);width:18px;height:2px;background:var(--ink);border-radius:2px;content:"";}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 28px;border-radius:var(--radius-sm);font-size:15px;font-weight:600;border:1.5px solid transparent;cursor:pointer;transition:background-color .18s,color .18s,transform .18s,box-shadow .18s,border-color .18s;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow);}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-hover);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow);}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand);}
.btn-ghost:hover{background:var(--brand-wash);color:var(--brand-deep);}
.btn-block{width:100%;}
.link-arrow{display:inline-flex;align-items:center;font-weight:600;color:var(--brand);}
.link-arrow::after{content:"→";margin-left:6px;transition:transform .18s cubic-bezier(.2,.7,.2,1);}
.link-arrow:hover{text-decoration:underline;}
.link-arrow:hover::after{transform:translateX(3px);}

/* ---------- breadcrumb & article head ---------- */
.crumb-bar{background:var(--surface);border-bottom:1px solid var(--line);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:14px 0;font-size:13px;color:var(--text-soft);margin:0;list-style:none;}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:var(--muted);}
.crumb a{color:var(--text-soft);}
.crumb a:hover{color:var(--brand);}
.crumb .is-current{color:var(--ink);font-weight:600;}
.article-head{position:relative;background-image:linear-gradient(100deg,rgba(14,59,51,.92),rgba(14,59,51,.72)),url("/assets/images/backpic/back-2.webp");background-size:cover;background-position:center;color:#fff;padding:64px 0 56px;}
.article-head h1{color:#fff;max-width:860px;}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:18px;font-size:13px;color:rgba(255,255,255,.85);}
.article-meta .chip{height:26px;padding:0 12px;font-size:13px;background:var(--accent);border-color:var(--accent);color:#fff;}
.article-meta .sep{width:1px;height:14px;background:rgba(255,255,255,.35);}

/* ---------- layout ---------- */
.article-body{padding:72px 0 96px;}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:48px;align-items:start;}
.reading{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:48px 56px;max-width:820px;}
.prose{max-width:720px;}
.prose h2{margin-top:2em;padding-left:14px;border-left:4px solid var(--brand);scroll-margin-top:96px;}
.prose h3{margin-top:1.6em;color:var(--brand);}
.prose ul,.prose ol{padding-left:1.4em;margin:0 0 1.2em;}
.prose li{margin-bottom:.5em;}
.prose blockquote{margin:0 0 1.4em;padding:18px 24px;background:var(--brand-wash);border-left:3px solid var(--accent);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--text);}
.prose blockquote p:last-child{margin-bottom:0;}
.prose img{border-radius:12px;border:1px solid var(--line);margin:1.6em 0 .6em;}
.prose figure{margin:1.6em 0;}
.prose figcaption{font-size:13px;color:var(--text-soft);text-align:center;margin-top:8px;}
.prose table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:15px;}
.prose th,.prose td{border:1px solid var(--line);padding:10px 14px;text-align:left;}
.prose th{background:var(--brand-wash);color:var(--ink);font-weight:700;}
.prose a{border-bottom:1px solid rgba(14,59,51,.35);}
.prose a:hover{border-bottom-color:var(--brand);}
.empty-state{text-align:center;padding:56px 20px;}
.empty-state .glyph{font-size:40px;color:var(--muted);line-height:1;}
.empty-state p{margin:16px 0 24px;color:var(--text-soft);}

/* ---------- toc ---------- */
.toc-panel{position:sticky;top:96px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px 20px;}
.toc-panel h4{font-size:14px;color:var(--text-soft);font-weight:700;letter-spacing:.04em;margin:0 0 12px;}
.toc-list{list-style:none;margin:0;padding:0;}
.toc-list li{margin-bottom:2px;}
.toc-list a{display:block;padding:7px 10px;border-radius:var(--radius-sm);font-size:14px;color:var(--text);border-left:3px solid transparent;line-height:1.5;}
.toc-list a:hover{background:var(--brand-wash);color:var(--brand);}
.toc-list a.is-current{background:var(--brand-wash);border-left-color:var(--brand);color:var(--brand);font-weight:600;}

/* ---------- tail blocks ---------- */
.tail-note{margin-top:40px;padding:24px 28px;background:var(--brand-wash);border:1px solid var(--line);border-radius:var(--radius);}
.tail-note h3{margin-bottom:.4em;}
.tail-note p{margin-bottom:1em;font-size:15px;color:var(--text);}
.tail-note .actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}

.related{padding:0 0 96px;}
.related-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;}
.related-head h2{margin:0;}
.related-head p{margin:6px 0 0;font-size:14px;color:var(--text-soft);}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--gap);}
.card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;transition:transform .22s cubic-bezier(.2,.7,.2,1),box-shadow .22s,border-color .22s;}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(14,59,51,.3);}
.card:hover .card-title{color:var(--brand);}
.card-thumb{aspect-ratio:3/2;width:100%;object-fit:cover;border-bottom:1px solid var(--line);background:var(--brand-wash);}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.card-title{font-family:var(--font-head);font-size:17px;font-weight:700;line-height:1.45;color:var(--ink);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .18s;}
.card-excerpt{margin:0;font-size:14px;color:var(--text);line-height:1.7;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;font-size:13px;color:var(--text-soft);padding-top:12px;border-top:1px solid var(--line);}
.tag{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--radius-pill);background:var(--brand-wash);color:var(--brand);font-size:13px;font-weight:600;border:1px solid rgba(14,59,51,.14);}
.tag-accent{background:rgba(210,84,43,.1);color:var(--accent);border-color:rgba(210,84,43,.2);}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-deep);color:rgba(255,255,255,.78);padding:72px 0 0;margin-top:96px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-text{color:#fff;}
.footer-desc{font-size:14px;line-height:1.75;color:rgba(255,255,255,.7);max-width:340px;}
.site-footer h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;}
.footer-links{list-style:none;margin:0;padding:0;}
.footer-links li{margin-bottom:10px;font-size:14px;}
.footer-links a{color:rgba(255,255,255,.78);}
.footer-links a:hover{color:#fff;text-decoration:underline;}
.footer-bottom{margin-top:56px;border-top:1px solid rgba(255,255,255,.14);padding:20px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.62);}
.footer-bottom a{color:rgba(255,255,255,.78);}
.footer-bottom a:hover{color:#fff;}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);}
.reveal.is-in{opacity:1;transform:translateY(0);transition:opacity .32s cubic-bezier(.2,.7,.2,1),transform .32s cubic-bezier(.2,.7,.2,1);}

/* ---------- responsive ---------- */
@media screen and (max-width:1023px){
  .article-grid{grid-template-columns:minmax(0,1fr);gap:32px;}
  .toc-panel{display:none;}
  .reading{padding:36px 32px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .article-body{padding:56px 0 72px;}
  .nav-wrap{height:64px;}
}
@media screen and (max-width:767px){
  .container{padding:0 20px;}
  .nav-toggle{display:block;}
  .chip-nav-wrap{position:absolute;left:0;right:0;top:100%;background:var(--surface);border-bottom:1px solid var(--line);box-shadow:var(--shadow);padding:8px 20px 16px;display:none;max-height:70vh;overflow-y:auto;}
  .chip-nav-wrap.is-open{display:block;}
  .chip-nav{flex-direction:column;align-items:stretch;gap:6px;overflow:visible;}
  .chip{justify-content:flex-start;height:44px;}
  .nav-right .btn-primary{display:none;}
  .article-head{padding:44px 0 40px;}
  .reading{padding:26px 20px;}
  .article-body{padding:44px 0 56px;}
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .site-footer{padding-top:56px;margin-top:64px;}
  .footer-bottom{margin-top:36px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
}

/* roulang page: category1 */
:root{
  --c-primary:#0E3B33;
  --c-primary-dark:#092A24;
  --c-accent:#D2542B;
  --c-neutral:#7A8C87;
  --c-bg:#F6F4EF;
  --c-surface:#FFFFFF;
  --c-ink:#101413;
  --c-text:#3A423F;
  --c-muted:#6B7672;
  --c-border:#E3DED4;
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(16,20,19,.05), 0 12px 32px -18px rgba(16,20,19,.18);
  --sh-2:0 18px 40px -20px rgba(16,20,19,.28);
  --sec-y:96px;
  --font-head:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --font-body:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-primary);text-decoration:none;transition:color .16s ease;}
a:hover{color:var(--c-primary-dark);text-decoration:underline;}
button{font-family:inherit;}
h1,h2,h3,h4{font-family:var(--font-head);color:var(--c-ink);margin:0;}
h1{font-size:clamp(28px,3.6vw,42px);line-height:1.2;font-weight:800;letter-spacing:-.02em;}
h2{font-size:clamp(24px,2.6vw,34px);line-height:1.25;font-weight:700;letter-spacing:-.01em;}
h3{font-size:20px;line-height:1.4;font-weight:700;}
h4{font-size:17px;line-height:1.4;font-weight:700;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(210,84,43,.4);outline-offset:2px;}
::selection{background:rgba(210,84,43,.2);}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 28px;border-radius:var(--r-btn);
  border:1px solid transparent;font-size:15px;font-weight:700;letter-spacing:.01em;
  cursor:pointer;text-decoration:none;
  transition:background .18s ease, color .18s ease, transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover,.btn-primary:focus{background:var(--c-primary-dark);color:#fff;text-decoration:none;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-ghost{background:transparent;border:1.5px solid var(--c-primary);color:var(--c-primary);}
.btn-ghost:hover,.btn-ghost:focus{background:rgba(14,59,51,.08);color:var(--c-primary);text-decoration:none;}
.btn-block{width:100%;}
.btn-sm{min-height:44px;padding:0 20px;font-size:14px;}

.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:14px;color:var(--c-primary);}
.link-arrow::after{content:"\2192";transition:transform .18s ease;}
.link-arrow:hover{text-decoration:none;color:var(--c-primary-dark);}
.link-arrow:hover::after{transform:translateX(3px);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:var(--c-surface);
  border-bottom:1px solid transparent;
  transition:box-shadow .2s ease, border-color .2s ease;
}
.site-header.is-stuck{border-bottom-color:var(--c-border);box-shadow:0 8px 24px -18px rgba(16,20,19,.5);}
.nav-wrap{display:flex;align-items:center;gap:24px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand:hover{text-decoration:none;}
.brand-mark{width:34px;height:34px;flex:0 0 auto;}
.brand-text{font-family:var(--font-head);font-weight:800;font-size:17px;color:var(--c-ink);white-space:nowrap;letter-spacing:-.01em;}
.chip-nav-wrap{flex:1 1 auto;min-width:0;position:relative;}
.chip-nav{display:flex;align-items:center;gap:8px;overflow-x:auto;padding:4px 2px;scrollbar-width:none;}
.chip-nav::-webkit-scrollbar{display:none;}
.chip{
  display:inline-flex;align-items:center;flex:0 0 auto;
  min-height:44px;padding:0 18px;border-radius:var(--r-pill);
  border:1px solid var(--c-border);background:transparent;
  font-size:14px;font-weight:600;color:var(--c-text);white-space:nowrap;
  transition:background .16s ease, color .16s ease, border-color .16s ease;
}
.chip:hover{background:rgba(14,59,51,.08);color:var(--c-primary);text-decoration:none;border-color:rgba(14,59,51,.2);}
.chip.is-active{background:var(--c-primary);border-color:var(--c-primary);color:#fff;}
.chip.is-active:hover{background:var(--c-primary-dark);color:#fff;}
.nav-right{display:flex;align-items:center;gap:12px;flex:0 0 auto;margin-left:auto;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);
  border:1px solid var(--c-border);background:transparent;cursor:pointer;
  position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;background:var(--c-primary);
  border-radius:2px;transform:translateX(-50%);transition:transform .2s ease, opacity .2s ease;
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none;}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none;}
.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);}

/* ---------- 分类横幅 ---------- */
.cat-hero{
  position:relative;
  min-height:240px;
  display:flex;align-items:flex-end;
  background-color:var(--c-primary-dark);
  background-image:linear-gradient(100deg, rgba(9,42,36,.9) 0%, rgba(9,42,36,.62) 62%, rgba(14,59,51,.42) 100%), url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--c-border);
}
.cat-hero-inner{padding-top:56px;padding-bottom:40px;}
.breadcrumb{margin-bottom:14px;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(246,244,239,.74);}
.breadcrumb li+li::before{content:"/";margin-right:8px;color:rgba(246,244,239,.45);}
.breadcrumb a{color:rgba(246,244,239,.86);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb [aria-current="page"]{color:#fff;font-weight:600;}
.cat-hero h1{color:#fff;margin-bottom:12px;}
.cat-hero-sub{max-width:720px;color:rgba(246,244,239,.86);font-size:16px;line-height:1.8;margin-bottom:18px;}
.hero-chips{display:flex;flex-wrap:wrap;gap:8px;}
.chip-mini{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--r-pill);font-size:13px;font-weight:600;
  background:rgba(246,244,239,.14);color:#F6F4EF;border:1px solid rgba(246,244,239,.28);
}
.chip-mini.is-accent{background:rgba(210,84,43,.9);border-color:rgba(210,84,43,.9);color:#fff;}

/* ---------- 主体布局 ---------- */
.section{padding:var(--sec-y) 0;}
.section-head{margin-bottom:32px;}
.section-head h2{margin-bottom:10px;}
.section-head p{color:var(--c-muted);font-size:15px;max-width:720px;}
.section-head.center{text-align:center;}
.section-head.center p{margin-left:auto;margin-right:auto;}

.cat-body{padding:72px 0 8px;}
.cat-layout{-webkit-box-align:start;align-items:flex-start;}
.cat-side{position:relative;}
.side-sticky{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:var(--r-card);box-shadow:var(--sh-1);padding:26px 24px;
}
.side-card h2,.side-card h3{font-size:17px;margin-bottom:12px;}
.side-card p{font-size:14px;line-height:1.75;color:var(--c-text);}
.side-list li{
  position:relative;padding-left:18px;font-size:14px;line-height:1.7;color:var(--c-text);
  margin-bottom:8px;
}
.side-list li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:2px;
  background:var(--c-accent);border-radius:2px;
}
.side-nav li{border-bottom:1px solid var(--c-border);}
.side-nav li:last-child{border-bottom:0;}
.side-nav a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:44px;font-size:14px;font-weight:600;color:var(--c-text);
}
.side-nav a::after{content:"\2192";color:var(--c-neutral);font-size:14px;transition:transform .18s ease,color .18s ease;}
.side-nav a:hover{color:var(--c-primary);text-decoration:none;}
.side-nav a:hover::after{color:var(--c-accent);transform:translateX(3px);}
.side-nav a.is-current{color:var(--c-primary);}
.side-cta{
  background:rgba(14,59,51,.06);border:1px solid var(--c-border);
  border-radius:var(--r-card);padding:22px 24px;
}
.side-cta img{width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:var(--r-img);border:1px solid var(--c-border);margin-bottom:14px;background:rgba(14,59,51,.08);}
.side-cta p{font-size:14px;line-height:1.7;color:var(--c-text);margin-bottom:16px;}

/* ---------- 纵向列表 ---------- */
.feed{display:flex;flex-direction:column;gap:18px;}
.feed-item{
  display:grid;grid-template-columns:56px minmax(0,1fr) auto;gap:20px;
  background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:var(--r-card);box-shadow:var(--sh-1);
  padding:26px 28px;
  transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.feed-item:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(14,59,51,.3);}
.feed-item--feature{grid-template-columns:56px minmax(0,1fr) 220px;}
.feed-index{
  font-family:var(--font-head);font-size:26px;font-weight:800;line-height:1.1;
  color:var(--c-accent);letter-spacing:-.02em;padding-top:2px;
}
.feed-body{min-width:0;}
.feed-title{font-size:19px;line-height:1.45;margin-bottom:8px;}
.feed-title a{color:var(--c-ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.feed-title a:hover{color:var(--c-primary);text-decoration:none;}
.feed-desc{
  font-size:15px;line-height:1.75;color:var(--c-text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.feed-meta{display:flex;flex-direction:column;align-items:flex-end;gap:10px;padding-top:4px;}
.feed-time{font-size:13px;color:var(--c-muted);white-space:nowrap;font-variant-numeric:tabular-nums;}
.feed-thumb{width:220px;}
.feed-thumb img{
  width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:var(--r-img);
  border:1px solid var(--c-border);background:rgba(14,59,51,.08);
}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--r-pill);font-size:13px;font-weight:600;
  background:rgba(14,59,51,.08);color:var(--c-primary);
}
.tag.is-accent{background:rgba(210,84,43,.12);color:#A83F1D;}

/* ---------- 步骤 / 流程 ---------- */
.process{background:var(--c-surface);border-top:1px solid var(--c-border);border-bottom:1px solid var(--c-border);}
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;position:relative;margin-top:8px;}
.steps::before{
  content:"";position:absolute;left:0;right:0;top:15px;height:1px;background:var(--c-border);
}
.step{position:relative;padding-top:52px;}
.step::before{
  content:"";position:absolute;top:8px;left:0;width:15px;height:15px;border-radius:999px;
  background:var(--c-surface);border:3px solid var(--c-primary);
}
.step-no{
  display:block;font-family:var(--font-head);font-size:13px;font-weight:700;
  color:var(--c-accent);letter-spacing:.08em;margin-bottom:6px;
}
.step h3{font-size:17px;margin-bottom:8px;}
.step p{font-size:14px;line-height:1.75;color:var(--c-muted);}

/* ---------- FAQ ---------- */
.faq-accordion{border:0;background:transparent;max-width:900px;}
.faq-accordion .accordion-item{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-card);
  margin-bottom:12px;overflow:hidden;box-shadow:var(--sh-1);
  transition:box-shadow .2s ease, border-color .2s ease;
}
.faq-accordion .accordion-item.is-active{box-shadow:inset 3px 0 0 var(--c-primary), var(--sh-1);border-color:rgba(14,59,51,.24);}
.faq-accordion .accordion-title{
  position:relative;display:block;padding:20px 56px 20px 24px;
  font-family:var(--font-head);font-size:17px;font-weight:700;color:var(--c-ink);
  background:transparent;border:0;line-height:1.5;
}
.faq-accordion .accordion-title:hover,
.faq-accordion .accordion-title:focus{background:rgba(14,59,51,.04);color:var(--c-primary);}
.faq-accordion .accordion-title::before{
  content:"";position:absolute;right:20px;top:50%;width:14px;height:2px;border-radius:2px;
  background:var(--c-accent);transform:translateY(-50%);transition:transform .2s ease;
}
.faq-accordion .accordion-title::after{
  content:"";position:absolute;right:26px;top:50%;width:2px;height:14px;border-radius:2px;
  background:var(--c-accent);transform:translateY(-50%);transition:transform .2s ease;
}
.faq-accordion .accordion-item.is-active .accordion-title::after{transform:translateY(-50%) rotate(90deg);}
.faq-accordion .accordion-content{
  padding:0 24px 22px;background:transparent;border:0;
  font-size:15px;line-height:1.8;color:var(--c-text);
}

/* ---------- CTA 与表单 ---------- */
.cta-band{background:rgba(14,59,51,.06);border-top:1px solid var(--c-border);border-bottom:1px solid var(--c-border);}
.cta-grid{-webkit-box-align:start;align-items:flex-start;}
.cta-copy h2{margin-bottom:14px;}
.cta-copy p{font-size:15px;color:var(--c-text);max-width:440px;}
.cta-points{margin-top:22px;display:flex;flex-direction:column;gap:10px;}
.cta-points li{position:relative;padding-left:18px;font-size:14px;color:var(--c-text);}
.cta-points li::before{content:"";position:absolute;left:0;top:10px;width:8px;height:2px;background:var(--c-accent);border-radius:2px;}
.form-card{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:32px;
}
.form-card h3{font-size:18px;margin-bottom:6px;}
.form-note{font-size:13px;color:var(--c-muted);margin-bottom:20px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;font-weight:600;color:var(--c-muted);margin-bottom:6px;}
.field input,.field select{
  width:100%;height:46px;padding:0 14px;border-radius:var(--r-btn);
  border:1px solid var(--c-border);background:var(--c-surface);
  font-family:inherit;font-size:15px;color:var(--c-ink);
  transition:border-color .16s ease, box-shadow .16s ease;
}
.field input::placeholder{color:#9AA5A1;}
.field input:focus,.field select:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(14,59,51,.2);}
.consent{display:flex;gap:10px;align-items:flex-start;font-size:13px;line-height:1.65;color:var(--c-muted);margin:6px 0 20px;}
.consent input{flex:0 0 auto;width:18px;height:18px;margin-top:2px;accent-color:var(--c-primary);}
.form-actions{display:flex;justify-content:flex-end;}
.privacy-note{margin-top:22px;font-size:13px;line-height:1.7;color:var(--c-muted);}
.privacy-note a{color:var(--c-primary);text-decoration:underline;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-primary-dark);color:#fff;padding:72px 0 28px;margin-top:0;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.02em;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-text{color:#fff;font-size:17px;}
.footer-desc{font-size:14px;line-height:1.75;color:rgba(246,244,239,.72);max-width:340px;}
.footer-links li{margin-bottom:10px;font-size:14px;color:rgba(246,244,239,.72);}
.footer-links a{color:rgba(246,244,239,.82);}
.footer-links a:hover{color:#fff;text-decoration:underline;}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(246,244,239,.16);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(246,244,239,.66);
}
.footer-bottom a{color:rgba(246,244,239,.8);}

/* ---------- 弹层 ---------- */
.reveal-overlay{background:rgba(16,20,19,.55);backdrop-filter:blur(2px);-webkit-backdrop-filter:blur(2px);}
.reveal.lead-modal{
  width:480px;max-width:calc(100vw - 32px);padding:32px;border:0;
  border-radius:16px;background:var(--c-surface);box-shadow:var(--sh-2);
}
.lead-modal h3{font-size:20px;margin-bottom:8px;}
.lead-modal .modal-sub{font-size:14px;color:var(--c-muted);margin-bottom:20px;}
.lead-modal .modal-close{
  position:absolute;top:12px;right:12px;width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  border:0;border-radius:var(--r-btn);background:transparent;
  color:var(--c-muted);font-size:24px;line-height:1;cursor:pointer;
}
.lead-modal .modal-close:hover{background:rgba(14,59,51,.08);color:var(--c-primary);}

/* ---------- 进场动效 ---------- */
.reveal-in{opacity:0;transform:translateY(12px);transition:opacity .34s cubic-bezier(.2,.7,.2,1), transform .34s cubic-bezier(.2,.7,.2,1);}
.reveal-in.is-visible{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1023px){
  :root{--sec-y:72px;}
  .nav-wrap{gap:14px;}
  .chip-nav-wrap{
    position:absolute;left:0;right:0;top:100%;
    background:var(--c-surface);border-bottom:1px solid var(--c-border);
    box-shadow:0 18px 28px -22px rgba(16,20,19,.5);
    padding:12px 20px 16px;display:none;
  }
  .chip-nav-wrap.is-open{display:block;}
  .chip-nav{flex-direction:column;align-items:stretch;overflow:visible;gap:6px;}
  .chip{justify-content:flex-start;min-height:46px;border-color:transparent;}
  .nav-toggle{display:block;}
  .cat-hero-inner{padding-top:44px;padding-bottom:32px;}
  .cat-body{padding:56px 0 0;}
  .side-sticky{position:static;}
  .feed-item--feature{grid-template-columns:56px minmax(0,1fr);}
  .feed-item--feature .feed-thumb{grid-column:2;width:100%;}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:32px;}
  .steps::before{display:none;}
}
@media screen and (max-width:767px){
  .container{padding:0 20px;}
  .site-footer{padding:56px 0 24px;}
  .footer-bottom{margin-top:32px;}
  .cat-hero{min-height:220px;}
  .feed-item{grid-template-columns:44px minmax(0,1fr);gap:14px;padding:20px;}
  .feed-index{font-size:22px;}
  .feed-meta{grid-column:2;flex-direction:row;align-items:center;justify-content:flex-start;padding-top:0;}
  .feed-item--feature .feed-thumb{grid-column:2;}
  .feed-thumb{width:100%;}
  .form-card{padding:22px;}
  .form-actions{justify-content:stretch;}
  .form-actions .btn{width:100%;}
}
@media screen and (max-width:520px){
  h1{font-size:27px;}
  .brand-text{font-size:15px;}
  .steps{grid-template-columns:minmax(0,1fr);}
  .step{padding-top:44px;}
  .cta-points{display:none;}
  .reveal.lead-modal{
    position:fixed;left:0;right:0;bottom:0;top:auto;margin:0;
    width:100%;max-width:none;border-radius:16px 16px 0 0;
    padding-bottom:calc(28px + env(safe-area-inset-bottom,0px));
    transform:none;
  }
  .reveal-overlay{display:flex;align-items:flex-end;}
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *{transition:none !important;animation:none !important;}
  .reveal-in{opacity:1;transform:none;}
  .feed-item:hover{transform:none;}
}

/* roulang page: category2 */
:root{
  --brand:#0E3B33;
  --brand-dark:#092A24;
  --brand-soft:rgba(14,59,51,.08);
  --accent:#D2542B;
  --neutral:#7A8C87;
  --bg:#F6F4EF;
  --surface:#FFFFFF;
  --ink:#101413;
  --body:#3A423F;
  --muted:#6B7672;
  --line:#E3DED4;
  --r-card:14px;
  --r-input:10px;
  --r-img:12px;
  --shadow:0 1px 2px rgba(16,20,19,.05), 0 12px 32px -18px rgba(16,20,19,.18);
  --shadow-hover:0 18px 40px -20px rgba(16,20,19,.28);
  --section:96px;
  --focus:0 0 0 3px rgba(210,84,43,.4);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--body);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color .16s ease,background-color .16s ease,border-color .16s ease}
a:hover{color:var(--brand-dark)}
h1,h2,h3,h4{
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  color:var(--ink);
  margin:0 0 .6em;
  font-weight:700;
  letter-spacing:-.01em;
}
h1{font-size:clamp(30px,4.2vw,48px);line-height:1.2;font-weight:800;letter-spacing:-.02em}
h2{font-size:clamp(24px,2.6vw,34px);line-height:1.25}
h3{font-size:20px;line-height:1.4}
h4{font-size:17px;line-height:1.45}
p{margin:0 0 1.1em}
ul,ol{margin:0 0 1.1em;padding-left:1.2em}
li{margin-bottom:.4em}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:none;box-shadow:var(--focus);border-radius:6px}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
}
.section{padding:var(--section) 0}
.section-tight{padding:64px 0}
.section-soft{background:rgba(14,59,51,.06);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head p{color:var(--muted);margin-bottom:0}
.eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--accent);
  margin-bottom:14px;
}
.lead{font-size:17px;line-height:1.8;color:var(--body)}
.muted{color:var(--muted)}
.small{font-size:13px;line-height:1.6}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--bg);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 6px 20px -16px rgba(16,20,19,.35)}
.nav-wrap{
  display:flex;
  align-items:center;
  gap:20px;
  height:72px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:40px;height:40px;flex:0 0 40px}
.brand-text{
  font-size:17px;
  font-weight:800;
  color:var(--ink);
  letter-spacing:-.01em;
  white-space:nowrap;
}
.chip-nav-wrap{
  flex:1 1 auto;
  min-width:0;
  position:relative;
  overflow:hidden;
}
.chip-nav{
  display:flex;
  align-items:center;
  gap:8px;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
  padding:6px 2px;
}
.chip-nav::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;
  align-items:center;
  height:34px;
  padding:0 16px;
  border-radius:999px;
  border:1px solid var(--line);
  background:transparent;
  color:var(--ink);
  font-size:14px;
  font-weight:600;
  white-space:nowrap;
  transition:background-color .16s ease,color .16s ease,border-color .16s ease;
}
.chip:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:rgba(14,59,51,.25)}
.chip.is-active{background:var(--brand);border-color:var(--brand);color:#fff}
.chip.is-active:hover{background:var(--brand-dark);color:#fff}
.chip-static{
  height:30px;
  padding:0 14px;
  font-size:13px;
  background:var(--surface);
  color:var(--muted);
  border-color:var(--line);
  cursor:default;
}
.chip-static:hover{background:var(--surface);color:var(--muted);border-color:var(--line)}
.nav-right{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  border:1px solid var(--line);
  border-radius:var(--r-input);
  background:var(--surface);
  cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 28px;
  border-radius:var(--r-input);
  font-size:15px;
  font-weight:600;
  border:1.5px solid transparent;
  cursor:pointer;
  transition:background-color .18s ease,transform .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow)}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-hover)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow)}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;
  background-color:var(--brand);
  background-image:linear-gradient(115deg,rgba(9,42,36,.94) 0%,rgba(9,42,36,.78) 52%,rgba(14,59,51,.62) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  color:#fff;
  padding:64px 0 56px;
}
.page-hero h1{color:#fff;max-width:820px;margin-bottom:18px}
.page-hero .lead{color:rgba(255,255,255,.86);max-width:720px}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;margin-bottom:22px;color:rgba(255,255,255,.72)}
.crumbs a{color:rgba(255,255,255,.86)}
.crumbs a:hover{color:#fff;text-decoration:underline}
.crumbs .sep{opacity:.6}
.crumbs .current{color:#fff;font-weight:600}
.chip-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:26px}
.page-hero .chip-static{
  background:rgba(255,255,255,.12);
  border-color:rgba(255,255,255,.28);
  color:#fff;
}
.hero-note{
  margin-top:22px;
  font-size:13px;
  color:rgba(255,255,255,.76);
  display:flex;
  flex-wrap:wrap;
  gap:6px 14px;
}
.hero-note i{font-style:normal;opacity:.55}

/* ---------- cards ---------- */
.cards-2 .cell{margin-bottom:24px;display:flex}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow);
  display:flex;
  flex-direction:column;
  width:100%;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(14,59,51,.3)}
.card:hover h3 a{color:var(--brand)}
.media{
  display:block;
  aspect-ratio:16/9;
  border-radius:var(--r-img);
  overflow:hidden;
  margin:16px 16px 0;
  border:1px solid var(--line);
  background:var(--brand-soft);
}
.media img{width:100%;height:100%;object-fit:cover;transition:transform .35s cubic-bezier(.2,.7,.2,1)}
.card:hover .media img{transform:scale(1.03)}
.card-body{padding:20px 24px 24px;display:flex;flex-direction:column;flex:1 1 auto}
.tag{
  display:inline-flex;
  align-items:center;
  align-self:flex-start;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  background:rgba(210,84,43,.12);
  color:#A53D1C;
  font-size:13px;
  font-weight:600;
  margin-bottom:14px;
}
.card h3{margin-bottom:10px;font-size:20px}
.card h3 a{color:var(--ink)}
.card p{color:var(--body);margin-bottom:18px}
.clamp-2{
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-meta{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-top:16px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--muted);
}
.link-more{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:14px}
.link-more span{transition:transform .18s ease}
.link-more:hover span{transform:translateX(3px)}
.link-more:hover{text-decoration:underline}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step{
  background:var(--surface);
  border:1px solid var(--line);
  border-left:3px solid var(--brand);
  border-radius:var(--r-card);
  padding:26px 28px;
  box-shadow:var(--shadow);
}
.step .num{
  font-size:13px;
  font-weight:700;
  letter-spacing:.1em;
  color:var(--accent);
  display:block;
  margin-bottom:10px;
}
.step h3{font-size:18px;margin-bottom:8px}
.step p{margin-bottom:0;color:var(--muted);font-size:15px}

/* ---------- compare ---------- */
.compare-shell{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow);
  overflow:hidden;
}
.compare-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
.compare-inner{min-width:760px}
.compare-row{
  display:grid;
  grid-template-columns:200px repeat(3,1fr);
  border-top:1px solid var(--line);
}
.compare-row:first-child{border-top:0}
.compare-row > div{padding:18px 22px;font-size:15px;line-height:1.7;border-left:1px solid var(--line)}
.compare-row > div:first-child{
  border-left:0;
  background:rgba(14,59,51,.05);
  font-weight:600;
  color:var(--ink);
}
.compare-head > div{
  background:var(--brand);
  color:#fff;
  font-weight:700;
  font-size:15px;
  border-left-color:rgba(255,255,255,.16);
}
.compare-head > div:first-child{background:var(--brand-dark);color:#fff}
.compare-row:nth-child(odd) > div:not(:first-child){background:rgba(246,244,239,.6)}
.swipe-hint{font-size:13px;color:var(--muted);margin-top:14px}

/* ---------- form ---------- */
.form-shell{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow);
  padding:32px;
}
.field{margin-bottom:20px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink);margin-bottom:8px}
.field input[type="text"],
.field input[type="email"],
.field select{
  width:100%;
  height:46px;
  padding:0 14px;
  border:1px solid var(--line);
  border-radius:var(--r-input);
  background:#fff;
  color:var(--ink);
  transition:border-color .16s ease,box-shadow .16s ease;
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);background-position:calc(100% - 20px) 20px,calc(100% - 15px) 20px;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.field input:focus,.field select:focus{border-color:var(--brand);box-shadow:var(--focus);outline:none}
.field input::placeholder{color:#9AA5A1}
.check{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:13px;
  color:var(--muted);
  line-height:1.7;
}
.check input{width:18px;height:18px;margin-top:3px;accent-color:var(--brand);flex:0 0 18px}
.form-actions{display:flex;justify-content:flex-end;margin-top:26px}
.form-msg{font-size:13px;margin-top:14px;color:var(--brand)}
.form-msg.is-error{color:#B23A1B}

/* ---------- faq ---------- */
.faq-list{max-width:860px}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  margin-bottom:12px;
  box-shadow:var(--shadow);
  overflow:hidden;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item[open]{border-color:rgba(14,59,51,.3)}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:20px 24px 20px 22px;
  font-size:17px;
  font-weight:700;
  color:var(--ink);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  border-left:3px solid transparent;
  transition:border-color .18s ease,background-color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item[open] summary{border-left-color:var(--brand)}
.faq-item summary:hover{background:rgba(14,59,51,.04)}
.faq-icon{
  position:relative;
  width:22px;height:22px;flex:0 0 22px;
  border-radius:999px;
  background:var(--brand-soft);
  transition:transform .22s ease,background-color .22s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);transform:translate(-50%,-50%);
}
.faq-icon::before{width:11px;height:2px}
.faq-icon::after{width:2px;height:11px}
.faq-item[open] .faq-icon{transform:rotate(45deg);background:rgba(210,84,43,.16)}
.faq-item[open] .faq-icon::before,.faq-item[open] .faq-icon::after{background:var(--accent)}
.faq-answer{padding:0 24px 22px 22px;font-size:15px;line-height:1.8;color:var(--body);border-left:3px solid rgba(14,59,51,.12)}
.faq-answer p:last-child{margin-bottom:0}

/* ---------- privacy ---------- */
.privacy{
  border-top:1px solid var(--line);
  padding-top:26px;
  font-size:13px;
  line-height:1.6;
  color:var(--muted);
}
.privacy p{margin-bottom:8px}

/* ---------- cta band ---------- */
.cta-band{
  background:var(--brand-dark);
  color:#fff;
  border-radius:var(--r-card);
  padding:48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-band h2{color:#fff;margin-bottom:10px}
.cta-band p{color:rgba(255,255,255,.78);margin-bottom:0;max-width:620px}
.cta-band .btn-ghost{color:#fff;border-color:rgba(255,255,255,.6)}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff}

/* ---------- footer ---------- */
.site-footer{
  background:var(--brand-dark);
  color:rgba(255,255,255,.82);
  padding:68px 0 26px;
  margin-top:var(--section);
}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.02em}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-text{color:#fff}
.footer-desc{font-size:14px;line-height:1.75;color:rgba(255,255,255,.72);max-width:340px;margin-bottom:0}
.footer-links{list-style:none;padding:0;margin:0;font-size:14px}
.footer-links li{margin-bottom:10px;line-height:1.6;color:rgba(255,255,255,.72)}
.footer-links a{color:rgba(255,255,255,.82)}
.footer-links a:hover{color:#fff;text-decoration:underline}
.footer-bottom{
  margin-top:44px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.16);
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  font-size:13px;
  color:rgba(255,255,255,.66);
}
.footer-bottom a{color:rgba(255,255,255,.82)}
.footer-bottom a:hover{color:#fff;text-decoration:underline}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s cubic-bezier(.2,.7,.2,1),transform .32s cubic-bezier(.2,.7,.2,1)}
.reveal.is-in{opacity:1;transform:translateY(0)}

/* ---------- responsive ---------- */
@media screen and (max-width:1024px){
  :root{--section:72px}
  .container{padding:0 24px}
  .nav-wrap{gap:14px}
  .brand-text{font-size:16px}
  .chip-nav-wrap{
    -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 18px,#000 calc(100% - 22px),transparent 100%);
    mask-image:linear-gradient(90deg,transparent 0,#000 18px,#000 calc(100% - 22px),transparent 100%);
  }
  .section{padding:72px 0}
  .steps{grid-template-columns:1fr 1fr}
  .cta-band{padding:36px}
}
@media screen and (max-width:768px){
  .nav-toggle{display:inline-flex}
  .chip-nav-wrap{
    position:absolute;
    left:0;right:0;top:60px;
    background:var(--bg);
    border-bottom:1px solid var(--line);
    box-shadow:var(--shadow);
    padding:10px 20px 18px;
    display:none;
    -webkit-mask-image:none;
    mask-image:none;
  }
  body.nav-open .chip-nav-wrap{display:block}
  .chip-nav{flex-direction:column;align-items:stretch;gap:6px;overflow:visible}
  .chip{height:44px;justify-content:flex-start;border-radius:var(--r-input);border-color:transparent}
  .chip.is-active{background:var(--brand)}
  .nav-wrap{height:60px}
  .brand-mark{width:34px;height:34px;flex:0 0 34px}
  .brand-text{font-size:15px}
  .nav-right .btn-primary{display:none}
  .section{padding:56px 0}
  .page-hero{padding:44px 0 40px;background-image:linear-gradient(120deg,rgba(9,42,36,.95) 0%,rgba(9,42,36,.84) 100%),url("/assets/images/backpic/back-2.webp")}
  .steps{grid-template-columns:1fr}
  .form-shell{padding:22px}
  .form-actions{justify-content:stretch}
  .form-actions .btn{width:100%}
  .cta-band{padding:28px;flex-direction:column;align-items:flex-start}
  .cta-band .btn{width:100%}
  .site-footer{padding-top:48px}
}
@media screen and (max-width:520px){
  .container{padding:0 20px}
  .card-body{padding:18px 20px 22px}
  .media{margin:14px 14px 0}
  .faq-item summary{padding:16px 18px;font-size:16px}
  .faq-answer{padding:0 18px 18px}
  .compare-row{grid-template-columns:150px repeat(3,minmax(180px,1fr))}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .card,.card:hover{transform:none}
  .card:hover .media img{transform:none}
  .btn:hover{transform:none}
  .link-more:hover span{transform:none}
}

/* roulang page: category3 */
:root{
  --green:#0E3B33;
  --green-dark:#092A24;
  --green-hover:#0B322B;
  --orange:#D2542B;
  --neutral:#7A8C87;
  --paper:#F6F4EF;
  --white:#FFFFFF;
  --ink:#101413;
  --body:#3A423F;
  --muted:#6B7672;
  --line:#E3DED4;
  --tint:rgba(14,59,51,.06);
  --radius-card:14px;
  --radius-input:10px;
  --radius-pill:999px;
  --radius-img:12px;
  --shadow-s:0 1px 2px rgba(16,20,19,.05), 0 12px 32px -18px rgba(16,20,19,.18);
  --shadow-h:0 18px 40px -20px rgba(16,20,19,.28);
  --sec:96px;
  --font-title:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,sans-serif;
  --font-body:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.85;
  color:var(--body);
  background:var(--paper);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
figure{margin:0;}
a{color:var(--green);text-decoration:none;transition:color .16s ease;}
a:hover{color:var(--green-dark);}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:3px solid rgba(210,84,43,.4);outline-offset:2px;
}
h1,h2,h3,h4{font-family:var(--font-title);color:var(--ink);margin:0;font-weight:700;letter-spacing:-.01em;}
h1{font-size:clamp(30px,4.2vw,48px);line-height:1.2;font-weight:800;letter-spacing:-.02em;}
h2{font-size:clamp(24px,2.6vw,34px);line-height:1.25;}
h3{font-size:20px;line-height:1.4;}
h4{font-size:16px;line-height:1.5;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;}
li{list-style:none;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:var(--sec) 0;}
.section--white{background:var(--white);}
.section--tint{background:var(--tint);}
.section--paper{background:var(--paper);}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head p{color:var(--muted);font-size:15px;margin-top:14px;margin-bottom:0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--orange);text-transform:none;
  padding:6px 14px;border-radius:var(--radius-pill);
  background:rgba(210,84,43,.1);margin-bottom:18px;
}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:var(--white);
  border-bottom:1px solid transparent;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-stuck{border-bottom-color:var(--line);box-shadow:0 8px 24px -20px rgba(16,20,19,.6);}
.nav-wrap{position:relative;display:flex;align-items:center;gap:20px;min-height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{width:36px;height:36px;flex:0 0 auto;}
.brand-text{font-family:var(--font-title);font-weight:800;font-size:17px;color:var(--green);letter-spacing:-.01em;}
.chip-nav-wrap{flex:1 1 auto;min-width:0;display:flex;justify-content:center;}
.chip-nav{display:flex;align-items:center;gap:8px;flex-wrap:wrap;justify-content:center;}
.chip{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;
  border-radius:var(--radius-pill);border:1px solid var(--line);
  background:transparent;color:var(--body);font-size:14px;font-weight:600;
  white-space:nowrap;transition:background .16s ease,color .16s ease,border-color .16s ease;
}
.chip:hover{background:rgba(14,59,51,.08);color:var(--green);border-color:rgba(14,59,51,.24);}
.chip.is-active{background:var(--green);border-color:var(--green);color:#fff;}
.chip.is-active:hover{background:var(--green-hover);color:#fff;}
.nav-right{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-input);
  background:var(--white);cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--green);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--green);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--radius-input);
  font-family:var(--font-title);font-size:15px;font-weight:700;line-height:1;
  border:1.5px solid transparent;cursor:pointer;text-align:center;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--green);color:#fff;box-shadow:var(--shadow-s);}
.btn-primary:hover{background:var(--green-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-h);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-s);}
.btn-ghost{background:transparent;border-color:var(--green);color:var(--green);}
.btn-ghost:hover{background:rgba(14,59,51,.08);color:var(--green-dark);}
.btn-block{width:100%;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--green);}
.link-arrow::after{content:"→";transition:transform .18s ease;}
.link-arrow:hover{text-decoration:underline;}
.link-arrow:hover::after{transform:translateX(3px);}

/* ---------- page hero ---------- */
.page-hero{
  background:linear-gradient(135deg,var(--green-dark) 0%,var(--green) 100%);
  color:#fff;padding:72px 0 64px;position:relative;overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;right:-120px;top:-120px;width:360px;height:360px;border-radius:50%;
  background:rgba(210,84,43,.18);filter:blur(10px);
}
.page-hero h1{color:#fff;max-width:15em;}
.page-hero .hero-sub{color:rgba(255,255,255,.82);font-size:16px;max-width:36em;margin:18px 0 24px;}
.page-hero .eyebrow{background:rgba(255,255,255,.14);color:#F3D9CE;}
.chip-row{display:flex;flex-wrap:wrap;gap:8px;}
.chip-row .tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--radius-pill);
  background:rgba(255,255,255,.12);color:#fff;font-size:13px;font-weight:600;
}
.hero-figure{
  border-radius:var(--radius-img);overflow:hidden;border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.08);position:relative;z-index:1;
}
.hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.hero-figure figcaption{font-size:13px;color:rgba(255,255,255,.7);text-align:center;padding:10px 8px 12px;}

/* ---------- timeline ---------- */
.timeline{position:relative;}
.timeline::before{
  content:"";position:absolute;left:27px;top:10px;bottom:10px;width:2px;
  background:linear-gradient(180deg,rgba(14,59,51,.24),rgba(14,59,51,.05));
}
.tl-item{position:relative;display:grid;grid-template-columns:56px 1fr;gap:28px;padding-bottom:32px;}
.tl-item:last-child{padding-bottom:0;}
.tl-num{
  width:56px;height:56px;border-radius:var(--radius-pill);background:var(--white);
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  font-family:var(--font-title);font-weight:800;font-size:16px;color:var(--green);
  box-shadow:var(--shadow-s);position:relative;z-index:1;transition:color .18s ease,border-color .18s ease;
}
.tl-item:hover .tl-num{color:var(--orange);border-color:rgba(210,84,43,.5);}
.tl-body{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px 28px;box-shadow:var(--shadow-s);
  transition:transform .22s cubic-bezier(.2,.7,.2,1),box-shadow .22s ease,border-color .22s ease;
}
.tl-body:hover{transform:translateY(-2px);box-shadow:var(--shadow-h);border-color:rgba(14,59,51,.3);}
.tl-body h3{margin-bottom:10px;}
.tl-body p{color:var(--body);font-size:15px;margin-bottom:14px;}
.tl-meta{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:var(--radius-pill);
  background:var(--tint);color:var(--green);font-size:13px;font-weight:600;
}
.tag--accent{background:rgba(210,84,43,.1);color:var(--orange);}

/* ---------- param cards ---------- */
.param-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;height:100%;box-shadow:var(--shadow-s);
  transition:transform .22s cubic-bezier(.2,.7,.2,1),box-shadow .22s ease,border-color .22s ease;
}
.param-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-h);border-color:rgba(14,59,51,.3);}
.param-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:14px;}
.param-value{font-family:var(--font-title);font-size:32px;font-weight:800;color:var(--orange);line-height:1.1;}
.param-unit{font-size:13px;color:var(--muted);font-weight:600;}
.param-card h3{font-size:18px;margin-bottom:8px;}
.param-card p{font-size:14px;color:var(--muted);margin-bottom:0;}
.param-list{margin-top:14px;padding-top:14px;border-top:1px solid var(--line);}
.param-list li{font-size:14px;color:var(--body);padding-left:16px;position:relative;line-height:1.7;}
.param-list li::before{content:"";position:absolute;left:0;top:12px;width:6px;height:2px;background:var(--orange);}

/* ---------- faq ---------- */
.faq-list{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-s);}
.faq-list .accordion{margin:0;background:transparent;border:0;}
.faq-list .accordion-item{border-bottom:1px solid var(--line);background:transparent;}
.faq-list .accordion-item:last-child{border-bottom:0;}
.faq-list .accordion-item.is-active{box-shadow:inset 3px 0 0 var(--green);}
.faq-list .accordion-title{
  display:block;padding:20px 56px 20px 24px;font-family:var(--font-title);
  font-size:17px;font-weight:700;color:var(--ink);line-height:1.5;border:0;background:transparent;
  position:relative;transition:background .16s ease,color .16s ease;
}
.faq-list .accordion-title:hover{background:rgba(14,59,51,.04);color:var(--green);}
.faq-list .accordion-title::before{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  width:auto;height:auto;margin:0;border:0;background:none;
  font-size:22px;font-weight:400;line-height:1;color:var(--green);
  transition:transform .2s cubic-bezier(.2,.7,.2,1);
}
.faq-list .accordion-item.is-active .accordion-title::before{transform:translateY(-50%) rotate(45deg);}
.faq-list .accordion-content{padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--body);border:0;background:transparent;}
.faq-list .accordion-content p{font-size:15px;color:var(--body);}

/* ---------- form ---------- */
.form-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:32px;box-shadow:var(--shadow-s);height:100%;
}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink);margin-bottom:6px;}
.field input[type="text"],
.field input[type="tel"],
.field input[type="email"],
.field select,
.field textarea{
  width:100%;min-height:46px;padding:10px 14px;font-family:var(--font-body);font-size:15px;
  color:var(--ink);background:var(--white);border:1px solid var(--line);border-radius:var(--radius-input);
  transition:border-color .16s ease,box-shadow .16s ease;
}
.field textarea{min-height:96px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:var(--neutral);}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--green);box-shadow:0 0 0 3px rgba(14,59,51,.2);
}
.check-line{display:flex;align-items:flex-start;gap:10px;margin:20px 0 8px;}
.check-line input{width:18px;height:18px;margin-top:4px;accent-color:var(--green);flex:0 0 auto;}
.check-line label{font-size:13px;color:var(--muted);line-height:1.7;}
.check-line a{text-decoration:underline;}
.form-note{font-size:13px;color:var(--muted);line-height:1.7;margin-top:12px;}
.form-side h3{margin-bottom:12px;}
.form-side p{font-size:14px;color:var(--muted);}
.form-side .side-list{margin-top:20px;border-top:1px solid var(--line);padding-top:20px;}
.form-side .side-list li{font-size:14px;color:var(--body);padding-left:18px;position:relative;margin-bottom:10px;line-height:1.7;}
.form-side .side-list li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:2px;background:var(--orange);
}
.privacy-block{
  margin-top:28px;padding:18px 20px;border-radius:var(--radius-card);
  background:var(--tint);font-size:13px;line-height:1.7;color:var(--muted);
}
.privacy-block a{text-decoration:underline;}

/* ---------- cta band ---------- */
.cta-band{background:var(--green-dark);color:#fff;padding:64px 0;}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;}
.cta-inner h2{color:#fff;max-width:22em;}
.cta-inner p{color:rgba(255,255,255,.78);font-size:15px;margin:12px 0 0;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.cta-band .btn-primary{background:var(--orange);}
.cta-band .btn-primary:hover{background:#B8461F;}
.cta-band .btn-ghost{border-color:rgba(255,255,255,.55);color:#fff;}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;}

/* ---------- footer ---------- */
.site-footer{background:var(--green-dark);color:rgba(255,255,255,.82);padding:64px 0 28px;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.02em;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-text{color:#fff;}
.footer-desc{font-size:13px;line-height:1.7;color:rgba(255,255,255,.7);max-width:22em;}
.footer-links li{font-size:14px;line-height:1.9;color:rgba(255,255,255,.72);}
.footer-links a{color:rgba(255,255,255,.82);}
.footer-links a:hover{color:#fff;text-decoration:underline;}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(255,255,255,.62);
}
.footer-bottom a{color:rgba(255,255,255,.72);}
.footer-bottom a:hover{color:#fff;}

/* ---------- modal ---------- */
.reveal-overlay{background:rgba(16,20,19,.55);backdrop-filter:blur(2px);}
#leadModal{
  display:none;width:min(480px,calc(100vw - 32px));border-radius:16px;border:0;
  padding:0;background:var(--white);box-shadow:var(--shadow-h);overflow:visible;
}
#leadModal.is-open{display:block;}
#leadModal .modal-head{padding:28px 28px 0;}
#leadModal .modal-head h3{font-size:20px;margin-bottom:6px;}
#leadModal .modal-head p{font-size:14px;color:var(--muted);}
#leadModal .modal-body{padding:20px 28px 28px;}
#leadModal .close-button{
  width:44px;height:44px;top:8px;right:8px;border-radius:var(--radius-input);
  color:var(--muted);font-size:24px;line-height:1;
}
#leadModal .close-button:hover{background:var(--tint);color:var(--green);}
body.is-modal-open{overflow:hidden;}

/* ---------- animation ---------- */
.js-anim .reveal-up{opacity:0;transform:translateY(12px);}
.js-anim .reveal-up.is-in{
  opacity:1;transform:none;
  transition:opacity .32s cubic-bezier(.2,.7,.2,1),transform .32s cubic-bezier(.2,.7,.2,1);
}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  :root{--sec:72px;}
  .container{padding:0 24px;}
  .chip-nav-wrap{justify-content:flex-start;}
  .chip-nav{flex-wrap:nowrap;overflow-x:auto;justify-content:flex-start;padding-bottom:4px;}
  .chip-nav-wrap{
    position:relative;overflow:hidden;
    -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 14px,#000 calc(100% - 14px),transparent 100%);
    mask-image:linear-gradient(90deg,transparent 0,#000 14px,#000 calc(100% - 14px),transparent 100%);
  }
  .page-hero{padding:56px 0 48px;}
}
@media (max-width:639px){
  :root{--sec:56px;}
  .container{padding:0 20px;}
  .nav-wrap{min-height:60px;}
  .nav-toggle{display:inline-flex;}
  .nav-right .btn-primary{display:none;}
  .chip-nav-wrap{
    position:absolute;left:-20px;right:-20px;top:100%;display:none;
    background:var(--white);border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-h);padding:14px 20px 20px;
    -webkit-mask-image:none;mask-image:none;
  }
  .chip-nav-wrap.is-open{display:block;}
  .chip-nav{flex-direction:column;align-items:stretch;gap:8px;overflow:visible;}
  .chip{width:100%;height:44px;justify-content:center;border-radius:var(--radius-input);}
  .page-hero{padding:44px 0 40px;}
  .hero-figure{margin-top:28px;}
  .hero-figure img{aspect-ratio:16/9;}
  .tl-item{grid-template-columns:40px 1fr;gap:16px;padding-bottom:24px;}
  .tl-num{width:40px;height:40px;font-size:14px;}
  .timeline::before{left:19px;}
  .tl-body{padding:20px;}
  .section-head{margin-bottom:32px;}
  .form-card{padding:24px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  #leadModal{
    position:fixed;left:0;right:0;bottom:0;top:auto;width:100%;max-width:100%;
    border-radius:16px 16px 0 0;margin:0;
    padding-bottom:env(safe-area-inset-bottom);
  }
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .js-anim .reveal-up{opacity:1;transform:none;}
}