/* roulang page: index */
:root{
  --ink:#14161B;
  --ink-70:#4A4E57;
  --ink-50:#7C818C;
  --ink-30:#B7BAC1;
  --accent:#D9482B;
  --accent-dark:#B93A20;
  --jade:#1F6F6B;
  --bg:#F7F5F1;
  --surface:#FFFFFF;
  --surface-dark:#14161B;
  --line:#E6E1D9;
  --on-dark:#F5F3EF;
  --on-dark-2:#B9B5AC;
  --r-card:12px;
  --r-btn:10px;
  --r-badge:4px;
  --r-lg:20px;
  --sh-1:0 1px 2px rgba(20,22,27,.04);
  --sh-2:0 10px 28px rgba(20,22,27,.10);
  --sh-3:0 20px 48px rgba(20,22,27,.14);
  --ease:cubic-bezier(.4,0,.2,1);
  --tr:200ms cubic-bezier(.4,0,.2,1);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Inter","Helvetica Neue",Arial,sans-serif;
  --font-num:"Inter","IBM Plex Sans","PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:var(--ink-70);
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  opacity:.025;
  background-image:radial-gradient(rgba(20,22,27,.9) 1px,transparent 1px);
  background-size:4px 4px;
}
h1,h2,h3,h4,h5,h6{
  margin:0 0 16px;
  color:var(--ink);
  font-family:var(--font-sans);
  font-weight:700;
  letter-spacing:-0.01em;
  line-height:1.25;
}
h1{font-size:clamp(40px,5vw,64px);line-height:1.08;letter-spacing:-0.02em;font-weight:700}
h2{font-size:clamp(28px,3vw,40px);line-height:1.2;font-weight:700}
h3{font-size:22px;line-height:1.4;font-weight:600}
h4{font-size:18px;line-height:1.5;font-weight:600}
p{margin:0 0 18px;max-width:70ch}
a{color:var(--ink);text-decoration:none;transition:color var(--tr),background-color var(--tr),border-color var(--tr)}
a:hover{color:var(--accent)}
img{max-width:100%;height:auto;display:block}
ul,ol{margin:0 0 20px;padding-left:20px}
li{margin-bottom:8px}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--jade);outline-offset:2px}
::selection{background:rgba(217,72,43,.16)}

/* ---------- 容器与栅格 ---------- */
.grid-container{
  max-width:1200px;
  margin-left:auto;
  margin-right:auto;
  padding-left:20px;
  padding-right:20px;
  width:100%;
}
@media screen and (min-width:1024px){
  .grid-container{padding-left:32px;padding-right:32px}
}
.grid-x{display:flex;flex-flow:row wrap;margin:0}
.grid-x.grid-margin-x{margin-left:-14px;margin-right:-14px}
.grid-margin-x>.cell{padding-left:14px;padding-right:14px}
.cell{width:100%;min-width:0}
.align-middle{align-items:center}
.align-stretch{align-items:stretch}

/* ---------- 通用元素 ---------- */
.section{padding:112px 0;position:relative;z-index:1}
.section--tight{padding:88px 0}
.section--dark{background:var(--surface-dark);color:var(--on-dark-2)}
.section--dark h2,.section--dark h3,.section--dark h4{color:var(--on-dark)}
.section--alt{background:#FCFBF9;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.14em;
  color:var(--accent);
  text-transform:uppercase;
  margin-bottom:18px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);display:block}
.section-head{margin-bottom:56px;max-width:780px}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center}
.section-head p{margin-bottom:0;color:var(--ink-50);font-size:16px;max-width:66ch}
.lead{font-size:18px;line-height:1.8;color:var(--ink-70)}
.muted{color:var(--ink-50);font-size:13px;line-height:1.6}
.divider{height:1px;background:var(--line);border:0;margin:0}
hr{border:0;border-top:1px solid var(--line);margin:32px 0}

.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border-radius:var(--r-badge);
  font-size:12px;
  font-weight:600;
  letter-spacing:.02em;
  background:rgba(20,22,27,.07);
  color:var(--ink);
  line-height:1.5;
}
.badge--accent{background:rgba(217,72,43,.10);color:var(--accent)}
.badge--jade{background:rgba(31,111,107,.10);color:var(--jade)}
.badge-line{border:1px solid var(--line);background:transparent;color:var(--ink-50)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  min-height:48px;
  padding:0 24px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15.5px;
  font-weight:600;
  letter-spacing:.01em;
  text-align:center;
  transition:background-color var(--tr),color var(--tr),border-color var(--tr),transform var(--tr),box-shadow var(--tr);
}
.btn .arrow{transition:transform var(--tr);display:inline-block;font-family:var(--font-num)}
.btn:hover .arrow{transform:translateX(4px)}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 1px 2px rgba(217,72,43,.24)}
.btn-primary:hover,.btn-primary:focus{background:var(--accent-dark);color:#fff}
.btn-ghost{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-light{background:var(--on-dark);color:var(--ink)}
.btn-light:hover{background:#fff;color:var(--ink)}
.btn-lg{min-height:52px;padding:0 30px}
.btn-block{width:100%}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-weight:600;
  color:var(--ink);
  border-bottom:2px solid rgba(217,72,43,.55);
  padding-bottom:3px;
  transition:border-color var(--tr),color var(--tr);
}
.btn-text:hover{color:var(--accent);border-bottom-color:var(--accent)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(247,245,241,.86);
  backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color var(--tr),background-color var(--tr);
}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(255,255,255,.9)}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:19px;
  font-weight:700;
  letter-spacing:-0.01em;
  color:var(--ink);
  white-space:nowrap;
}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:26px;height:26px;
  border:2px solid var(--accent);
  border-radius:3px;
  position:relative;
  flex:none;
}
.brand-mark::after{
  content:"";
  position:absolute;
  inset:4px;
  border:1px solid rgba(20,22,27,.35);
  border-radius:1px;
}
.nav-main{display:flex;align-items:center;gap:4px}
.nav-link{
  position:relative;
  padding:10px 14px;
  font-size:15px;
  font-weight:500;
  color:var(--ink-70);
  border-radius:8px;
}
.nav-link:hover{color:var(--ink);background:rgba(20,22,27,.05)}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;
  background:var(--accent);
  border-radius:2px;
}
.nav-cta{min-height:42px;padding:0 20px;font-size:15px}
.nav-tools{display:flex;align-items:center;gap:14px}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:80px 0 96px;
  min-height:78vh;
  display:flex;
  align-items:center;
  overflow:hidden;
  background:var(--bg);
}
.hero::after{
  content:"";
  position:absolute;
  right:-140px;top:-120px;
  width:420px;height:420px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(217,72,43,.09),transparent 68%);
  pointer-events:none;
}
.hero-copy{max-width:640px}
.hero-title{margin-bottom:22px}
.hero-sub{font-size:17.5px;line-height:1.8;color:var(--ink-70);margin-bottom:32px;max-width:60ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.trust-row{display:flex;flex-wrap:wrap;gap:12px 22px;padding-top:22px;border-top:1px solid var(--line);max-width:620px}
.trust-item{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-50)}
.trust-item .dot{width:6px;height:6px;border-radius:50%;background:var(--jade);flex:none}
.hero-media{position:relative}
.hero-media img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:var(--r-lg);
  box-shadow:var(--sh-3);
}
.hero-media::after{
  content:"";
  position:absolute;
  left:-12px;bottom:-12px;
  width:74px;height:74px;
  border-left:2px solid var(--accent);
  border-bottom:2px solid var(--accent);
  border-radius:0 0 0 6px;
  pointer-events:none;
}
.hero-media figcaption{
  margin-top:14px;
  font-size:13px;
  color:var(--ink-50);
}

/* ---------- 服务概览数据 ---------- */
.stat-row{display:flex;flex-wrap:wrap;margin-left:-12px;margin-right:-12px}
.stat-cell{padding:12px;width:100%}
@media screen and (min-width:640px){.stat-cell{width:50%}}
@media screen and (min-width:1024px){.stat-cell{width:25%}}
.stat-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px 24px 24px;
  height:100%;
  box-shadow:var(--sh-1);
  transition:transform var(--tr),box-shadow var(--tr);
}
.stat-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.stat-num{
  font-family:var(--font-num);
  font-size:38px;
  font-weight:700;
  letter-spacing:-0.02em;
  color:var(--ink);
  line-height:1.1;
  display:block;
  margin-bottom:6px;
}
.stat-num span{font-size:16px;font-weight:600;color:var(--ink-50);margin-left:4px}
.stat-label{font-size:15px;font-weight:600;color:var(--ink);margin-bottom:6px;display:block}
.stat-card p{margin:0;font-size:14px;color:var(--ink-50);line-height:1.7}

/* ---------- 三步上手 ---------- */
.steps-row{display:flex;flex-wrap:wrap;margin-left:-16px;margin-right:-16px}
.step-col{padding:16px;width:100%}
@media screen and (min-width:800px){.step-col{width:33.3333%}}
.step{
  position:relative;
  padding:30px 0 8px;
  border-top:2px solid var(--line);
  height:100%;
  transition:border-color var(--tr);
}
.step:hover{border-top-color:var(--accent)}
.step-num{
  font-family:var(--font-num);
  font-size:clamp(48px,6vw,68px);
  font-weight:700;
  line-height:1;
  letter-spacing:-0.04em;
  color:var(--accent);
  display:block;
  margin-bottom:14px;
}
.step h3{margin-bottom:10px}
.step p{font-size:15px;color:var(--ink-50);line-height:1.75;margin-bottom:0}
@media screen and (max-width:799px){
  .steps-row{flex-direction:column;margin:0}
  .step-col{width:100%;padding:0}
  .step{border-top:0;border-left:2px solid var(--line);padding:0 0 28px 24px}
  .step::before{
    content:"";
    position:absolute;
    left:-7px;top:26px;
    width:12px;height:12px;
    border-radius:50%;
    background:var(--bg);
    border:2px solid var(--accent);
  }
  .step-num{font-size:44px}
}

/* ---------- 图文交替 ---------- */
.split-row{display:flex;flex-wrap:wrap;align-items:center;margin-left:-18px;margin-right:-18px}
.split-col{padding:18px;width:100%}
@media screen and (min-width:900px){
  .split-col--media{width:46%}
  .split-col--body{width:54%}
  .split-row--reverse{flex-direction:row-reverse}
}
.split-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--r-card);
  box-shadow:var(--sh-2);
}
.split-body h2{margin-bottom:16px}
.split-body p{font-size:16px;color:var(--ink-70)}
.check-list{list-style:none;padding:0;margin:10px 0 0}
.check-list li{
  position:relative;
  padding-left:26px;
  margin-bottom:12px;
  font-size:15.5px;
  color:var(--ink-70);
}
.check-list li::before{
  content:"";
  position:absolute;
  left:0;top:9px;
  width:12px;height:2px;
  background:var(--accent);
}

/* ---------- 案例证明 ---------- */
.case-row{display:flex;flex-wrap:wrap;margin-left:-16px;margin-right:-16px;align-items:stretch}
.case-col{padding:16px;width:100%}
@media screen and (min-width:900px){
  .case-col--main{width:58%}
  .case-col--side{width:42%}
}
.case-main{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  height:100%;
  display:flex;
  flex-direction:column;
  box-shadow:var(--sh-1);
  transition:transform var(--tr),box-shadow var(--tr);
}
.case-main:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.case-main img{width:100%;aspect-ratio:3/2;object-fit:cover;transition:transform 400ms var(--ease)}
.case-main:hover img{transform:scale(1.03)}
.case-main-body{padding:28px 28px 30px}
.quote{
  font-size:19px;
  line-height:1.7;
  color:var(--ink);
  font-weight:500;
  margin:16px 0 20px;
  padding-left:18px;
  border-left:3px solid var(--accent);
}
.case-side{display:flex;flex-direction:column;gap:24px;height:100%}
.case-mini{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  flex:1;
  box-shadow:var(--sh-1);
  transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.case-mini:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#D9D2C7}
.case-mini p{font-size:15.5px;color:var(--ink-70);margin-bottom:16px;line-height:1.75}
.case-meta{font-size:13px;color:var(--ink-50);display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.case-meta .sep{width:1px;height:12px;background:var(--line);display:inline-block}

/* ---------- FAQ ---------- */
.faq-row{display:flex;flex-wrap:wrap;margin-left:-16px;margin-right:-16px}
.faq-col{padding:16px;width:100%}
@media screen and (min-width:900px){
  .faq-col--side{width:27%}
  .faq-col--main{width:73%}
}
.faq-side h2{margin-bottom:14px}
.faq-side p{font-size:15px;color:var(--ink-50);margin-bottom:20px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line);position:relative}
.faq-item::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:2px;
  background:var(--accent);
  opacity:0;
  transition:opacity var(--tr);
}
.faq-item.is-open::before{opacity:1}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 6px 22px 18px;
  text-align:left;
  font-size:18px;
  font-weight:600;
  color:var(--ink);
  transition:color var(--tr);
}
.faq-q:hover{color:var(--accent)}
.faq-icon{
  flex:none;
  width:22px;height:22px;
  position:relative;
  border-radius:50%;
  border:1px solid var(--line);
  transition:border-color var(--tr),background-color var(--tr);
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--ink-50);
  transition:transform var(--tr),background-color var(--tr);
}
.faq-icon::before{left:5px;right:5px;top:10px;height:1.6px}
.faq-icon::after{top:5px;bottom:5px;left:10px;width:1.6px}
.faq-item.is-open .faq-icon{border-color:var(--accent)}
.faq-item.is-open .faq-icon::before{background:var(--accent)}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);background:var(--accent)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 200ms var(--ease);
}
.faq-a-inner{padding:0 40px 24px 18px;font-size:15.5px;color:var(--ink-70);line-height:1.85}
.faq-a-inner p{margin-bottom:0;max-width:64ch}

/* ---------- CTA ---------- */
.cta-band{background:var(--surface-dark);color:var(--on-dark-2);padding:96px 0;position:relative;overflow:hidden}
.cta-band::before{
  content:"";
  position:absolute;
  left:-100px;bottom:-160px;
  width:380px;height:380px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(217,72,43,.18),transparent 70%);
  pointer-events:none;
}
.cta-band h2{color:var(--on-dark);margin-bottom:16px}
.cta-band p{color:var(--on-dark-2);font-size:16px}
.cta-points{list-style:none;padding:0;margin:22px 0 0}
.cta-points li{
  position:relative;
  padding-left:22px;
  margin-bottom:10px;
  font-size:15px;
  color:var(--on-dark-2);
}
.cta-points li::before{
  content:"";
  position:absolute;
  left:0;top:10px;
  width:10px;height:2px;
  background:var(--accent);
}
.cta-form{
  background:rgba(255,255,255,.04);
  border:1px solid rgba(245,243,239,.14);
  border-radius:var(--r-lg);
  padding:32px;
}
.field{margin-bottom:20px}
.field label{
  display:block;
  font-size:13.5px;
  font-weight:600;
  color:var(--on-dark);
  margin-bottom:8px;
  letter-spacing:.02em;
}
.field input{
  width:100%;
  min-height:48px;
  padding:12px 14px;
  background:rgba(255,255,255,.96);
  border:1px solid rgba(245,243,239,.22);
  border-radius:var(--r-btn);
  color:var(--ink);
  font-size:15.5px;
  transition:border-color var(--tr),box-shadow var(--tr);
}
.field input:hover{border-color:rgba(245,243,239,.45)}
.field input:focus{
  outline:none;
  border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(217,72,43,.20);
}
.form-note{margin:16px 0 0;font-size:12.5px;color:var(--on-dark-2);line-height:1.7}

/* ---------- 最新信息 ---------- */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap}
.news-head h2{margin-bottom:8px}
.news-head p{margin:0;color:var(--ink-50);font-size:15px}
.news-row{display:flex;flex-wrap:wrap;margin-left:-14px;margin-right:-14px}
.news-col{padding:14px;width:100%}
@media screen and (min-width:900px){
  .news-col--main{width:52%}
  .news-col--side{width:48%}
}
.card{
  display:flex;
  flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  height:100%;
  box-shadow:var(--sh-1);
  transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#D9D2C7}
.card-media{overflow:hidden;display:block}
.card-media img{width:100%;aspect-ratio:3/2;object-fit:cover;transition:transform 420ms var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1}
.card-title{
  font-size:19px;
  font-weight:600;
  color:var(--ink);
  line-height:1.45;
  margin:12px 0 10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-title a{color:inherit}
.card-title a:hover{color:var(--accent)}
.card-text{
  font-size:14.5px;
  color:var(--ink-50);
  line-height:1.75;
  margin:0 0 18px;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-foot{
  margin-top:auto;
  padding-top:16px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:12.5px;
  color:var(--ink-50);
}
.card-link{font-weight:600;color:var(--ink);display:inline-flex;align-items:center;gap:6px}
.card-link:hover{color:var(--accent)}
.card-link .arrow{transition:transform var(--tr)}
.card-link:hover .arrow{transform:translateX(4px)}
.news-side{display:flex;flex-direction:column;height:100%;border-top:1px solid var(--line)}
.news-item{
  display:flex;
  gap:18px;
  padding:18px 0;
  border-bottom:1px solid var(--line);
  align-items:flex-start;
}
.news-item img{
  width:104px;
  height:72px;
  object-fit:cover;
  border-radius:8px;
  flex:none;
}
.news-item h3{font-size:16.5px;margin:0 0 8px;line-height:1.5;font-weight:600}
.news-item h3 a{color:var(--ink)}
.news-item h3 a:hover{color:var(--accent)}
.news-item .news-meta{font-size:12.5px;color:var(--ink-50);display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.news-item p{font-size:13.5px;color:var(--ink-50);margin:6px 0 0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.empty-state{
  min-height:220px;
  border:1px dashed #D5CEC3;
  border-radius:var(--r-card);
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:12px;
  padding:40px 24px;
  text-align:center;
  background:rgba(255,255,255,.5);
}
.empty-state .empty-icon{
  width:52px;height:52px;
  border:1px solid var(--line);
  border-radius:8px;
  position:relative;
}
.empty-state .empty-icon::before{
  content:"";
  position:absolute;
  left:10px;right:10px;top:16px;
  height:1px;
  background:var(--line);
  box-shadow:0 8px 0 var(--line),0 16px 0 var(--line);
}
.empty-state p{margin:0;color:var(--ink-50);font-size:15px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--surface-dark);color:var(--on-dark-2);padding:76px 0 0;position:relative;z-index:1}
.footer-row{display:flex;flex-wrap:wrap;margin-left:-16px;margin-right:-16px}
.footer-col{padding:0 16px 40px;width:100%}
@media screen and (min-width:640px){.footer-col{width:50%}}
@media screen and (min-width:1024px){
  .footer-col--brand{width:34%}
  .footer-col--nav{width:22%}
  .footer-col--cat{width:22%}
  .footer-col--contact{width:22%}
}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:19px;
  font-weight:700;
  color:var(--on-dark);
  margin-bottom:16px;
}
.footer-brand:hover{color:var(--on-dark)}
.footer-col p{font-size:14px;color:var(--on-dark-2);line-height:1.8;max-width:34ch}
.footer-title{
  font-size:13px;
  font-weight:600;
  letter-spacing:.12em;
  color:var(--on-dark);
  margin:0 0 18px;
}
.footer-links{list-style:none;padding:0;margin:0}
.footer-links li{margin-bottom:12px}
.footer-links a{font-size:14.5px;color:var(--on-dark-2)}
.footer-links a:hover{color:var(--on-dark)}
.footer-bottom{
  border-top:1px solid rgba(245,243,239,.12);
  padding:22px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--on-dark-2);
}
.footer-bottom span{line-height:1.7}

/* ---------- 移动底部 Tab ---------- */
.tabbar{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:80;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(12px);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
.tabbar-inner{display:flex;height:58px}
.tab-item{
  flex:1;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:3px;
  font-size:11.5px;
  color:var(--ink-50);
  position:relative;
  transition:color var(--tr);
}
.tab-item svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.tab-item.is-active{color:var(--accent)}
.tab-item.is-active::before{
  content:"";
  position:absolute;
  top:0;left:50%;
  transform:translateX(-50%);
  width:26px;height:2px;
  background:var(--accent);
  border-radius:0 0 2px 2px;
}
@media screen and (max-width:1023px){
  body{padding-bottom:calc(58px + env(safe-area-inset-bottom))}
  .tabbar{display:block}
  .nav-main,.nav-cta{display:none}
  .site-header{position:sticky}
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 520ms var(--ease),transform 520ms var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ---------- 响应式收紧 ---------- */
@media screen and (max-width:1023px){
  .section{padding:64px 0}
  .section--tight{padding:56px 0}
  .cta-band{padding:64px 0}
  .hero{padding:52px 0 64px;min-height:auto}
  .hero-title{font-size:clamp(30px,7vw,42px)}
  .section-head{margin-bottom:36px}
  .cta-form{padding:24px}
  .site-footer{padding-top:56px}
}
@media screen and (max-width:639px){
  body{font-size:16px}
  .hero-actions .btn{width:100%}
  .stat-card{padding:22px 20px}
  .case-main-body{padding:22px 20px 24px}
  .quote{font-size:17px}
  .news-item img{width:88px;height:64px}
  .faq-q{font-size:16.5px;padding:18px 4px 18px 14px}
  .faq-a-inner{padding:0 24px 20px 14px}
}

/* roulang page: category1 */
:root{
  --ink:#14161B;
  --ink-70:rgba(20,22,27,.72);
  --ink-50:rgba(20,22,27,.52);
  --ink-30:rgba(20,22,27,.28);
  --accent:#D9482B;
  --accent-dark:#B93A20;
  --accent-soft:rgba(217,72,43,.10);
  --jade:#1F6F6B;
  --jade-soft:rgba(31,111,107,.10);
  --bg:#F7F5F1;
  --surface:#FFFFFF;
  --surface-dark:#14161B;
  --line:#E6E1D9;
  --on-dark:#F5F3EF;
  --on-dark-50:#B9B5AC;
  --radius-card:12px;
  --radius-btn:10px;
  --radius-badge:4px;
  --radius-lg:20px;
  --shadow-1:0 1px 2px rgba(20,22,27,.04);
  --shadow-2:0 10px 28px rgba(20,22,27,.10);
  --shadow-3:0 20px 48px rgba(20,22,27,.14);
  --ease:cubic-bezier(.4,0,.2,1);
  --tr:200ms cubic-bezier(.4,0,.2,1);
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,sans-serif;
  --font-num:"Inter","IBM Plex Sans","PingFang 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(--ink-70);
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  opacity:.03;
  background-image:radial-gradient(rgba(20,22,27,.9) 1px,transparent 1px);
  background-size:4px 4px;
}
img{max-width:100%;display:block;border-radius:var(--radius-card);}
a{color:inherit;text-decoration:none;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
button,input,select{font-family:inherit;font-size:inherit;}
.grid-container{max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
@media screen and (min-width:1024px){
  .grid-container{padding-left:32px;padding-right:32px;}
}
h1,h2,h3{color:var(--ink);font-weight:700;letter-spacing:-.01em;}
h1{font-size:clamp(30px,4.4vw,50px);line-height:1.12;letter-spacing:-.02em;}
h2{font-size:clamp(24px,2.6vw,34px);line-height:1.24;}
h3{font-size:22px;line-height:1.4;font-weight:600;}
p{max-width:72ch;}
.num{font-family:var(--font-num);font-weight:600;letter-spacing:0;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,245,241,.9);
  backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color var(--tr),background var(--tr);
}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(255,255,255,.86);}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;height:72px;
  padding-left:20px;padding-right:20px;
}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:var(--ink);letter-spacing:-.01em;}
.brand-mark{
  width:22px;height:22px;border-radius:var(--radius-badge);
  background:var(--accent);flex:none;
  box-shadow:inset 0 0 0 4px rgba(255,255,255,.22);
}
.nav-main{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  height:40px;padding:0 12px;border-radius:var(--radius-btn);
  font-size:15px;color:var(--ink-70);
  transition:color var(--tr),background var(--tr);
}
.nav-link:hover{color:var(--ink);background:rgba(20,22,27,.05);}
.nav-link.is-active{color:var(--ink);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;
  background:var(--accent);border-radius:2px;
}
.nav-tools{display:flex;align-items:center;gap:12px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 24px;border-radius:var(--radius-btn);
  border:1px solid transparent;cursor:pointer;font-size:15.5px;font-weight:600;
  transition:background var(--tr),color var(--tr),border-color var(--tr),transform var(--tr),box-shadow var(--tr);
}
.btn i{transition:transform var(--tr);}
.btn:hover i{transform:translateX(4px);}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--accent-dark);box-shadow:var(--shadow-2);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:var(--on-dark);}
.btn-light{background:#fff;color:var(--ink);border-color:var(--line);}
.btn-light:hover{border-color:var(--ink);}
.btn-lg{min-height:52px;padding:0 28px;}
.btn:focus-visible,.nav-link:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible{
  outline:2px solid var(--jade);outline-offset:2px;
}
.nav-cta{min-height:40px;padding:0 18px;font-size:14.5px;}

/* ---------- hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  min-height:312px;display:flex;align-items:flex-end;
  border-radius:0 0 var(--radius-lg) var(--radius-lg);
  background-image:linear-gradient(96deg,rgba(20,22,27,.92) 0%,rgba(20,22,27,.72) 48%,rgba(20,22,27,.42) 100%),
    url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
}
.page-hero .grid-container{position:relative;z-index:2;padding-top:44px;padding-bottom:44px;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--on-dark-50);margin-bottom:18px;}
.crumb li{display:inline-flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:rgba(245,243,239,.34);}
.crumb a{color:var(--on-dark-50);transition:color var(--tr);}
.crumb a:hover{color:var(--on-dark);}
.crumb [aria-current="page"]{color:var(--on-dark);}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;border-radius:var(--radius-badge);
  background:var(--accent);color:#fff;font-size:12.5px;font-weight:600;
  letter-spacing:.06em;margin-bottom:18px;
}
.page-hero h1{color:var(--on-dark);max-width:16em;}
.page-hero h1 em{font-style:normal;color:var(--accent);}
.hero-sub{color:var(--on-dark-50);font-size:16.5px;max-width:56ch;margin-top:16px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:28px;margin-top:26px;}
.hero-stats div{color:var(--on-dark);}
.hero-stats .num{display:block;font-size:26px;line-height:1.2;}
.hero-stats span{font-size:13px;color:var(--on-dark-50);}

/* ---------- sections ---------- */
.section{padding:64px 0;position:relative;z-index:1;}
@media screen and (min-width:1024px){.section{padding:96px 0;}}
.sec-head{max-width:760px;margin-bottom:36px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;font-size:12.5px;font-weight:600;
  letter-spacing:.14em;color:var(--accent);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px;}
.sec-head p{margin-top:14px;color:var(--ink-70);}

/* feature rows */
.feature-row{align-items:center;margin-bottom:64px;}
.feature-row:last-child{margin-bottom:0;}
@media screen and (min-width:1024px){.feature-row{margin-bottom:88px;}}
.feature-media img{aspect-ratio:3/2;object-fit:cover;width:100%;box-shadow:var(--shadow-2);}
.feature-body h2{margin-bottom:16px;}
.feature-body h2::before{
  content:"";display:block;width:34px;height:3px;background:var(--accent);
  border-radius:2px;margin-bottom:16px;
}
.feature-body p+p{margin-top:14px;}
.point-list{margin-top:22px;display:grid;gap:12px;}
.point-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:12px 14px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-1);
  font-size:15px;color:var(--ink-70);
}
.point-list i{color:var(--jade);margin-top:4px;flex:none;}
.step-inline{margin-top:24px;display:grid;gap:0;}
.step-inline li{
  display:flex;gap:16px;padding:16px 0;border-bottom:1px solid var(--line);
}
.step-inline li:first-child{border-top:1px solid var(--line);}
.step-inline .idx{
  font-family:var(--font-num);font-weight:600;font-size:15px;color:var(--accent);
  min-width:34px;
}
.step-inline strong{display:block;color:var(--ink);font-size:16px;margin-bottom:4px;}
.step-inline span{font-size:14.5px;color:var(--ink-70);}

/* mid banner CTA */
.banner-cta{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);box-shadow:var(--shadow-1);
  padding:32px;position:relative;overflow:hidden;
}
.banner-cta::after{
  content:"";position:absolute;right:-40px;top:-40px;width:160px;height:160px;
  border:2px solid var(--line);border-radius:var(--radius-lg);transform:rotate(12deg);
}
.banner-cta h3{margin-bottom:10px;}
.banner-cta p{font-size:15.5px;}
.banner-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px;}
@media screen and (min-width:1024px){
  .banner-cta{padding:40px 44px;display:flex;align-items:center;justify-content:space-between;gap:40px;}
  .banner-actions{margin-top:0;flex:none;}
}

/* entry list */
.entry-list{border-top:1px solid var(--line);}
.entry-list li{border-bottom:1px solid var(--line);}
.entry-list a{
  display:flex;align-items:center;gap:20px;padding:22px 4px;
  transition:padding-left var(--tr),background var(--tr);
}
.entry-list a:hover{background:rgba(20,22,27,.02);padding-left:12px;}
.entry-list .idx{
  font-family:var(--font-num);font-weight:600;font-size:14px;color:var(--accent);
  min-width:34px;
}
.entry-list .entry-txt{flex:1;}
.entry-list strong{display:block;color:var(--ink);font-size:17px;font-weight:600;}
.entry-list span{font-size:14px;color:var(--ink-50);}
.entry-list .arrow{color:var(--ink-30);transition:transform var(--tr),color var(--tr);}
.entry-list a:hover .arrow{color:var(--accent);transform:translateX(4px);}

/* FAQ */
.faq-side h2{font-size:clamp(22px,2.2vw,28px);}
.faq-side p{margin-top:14px;font-size:15px;color:var(--ink-70);}
.faq-side .badge{margin-top:18px;}
.accordion.faq-acc{border:none;background:transparent;}
.faq-acc .accordion-item{
  border:none;border-bottom:1px solid var(--line);
  background:transparent;position:relative;
}
.faq-acc .accordion-item:first-child{border-top:1px solid var(--line);}
.faq-acc .accordion-item.is-active::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:2px;
  background:var(--accent);border-radius:2px;
}
.faq-acc .accordion-title{
  border:none;background:transparent;color:var(--ink);
  font-size:18px;font-weight:600;padding:22px 44px 22px 18px;
  transition:color var(--tr);
}
.faq-acc .accordion-title:hover{color:var(--accent);}
.faq-acc .accordion-title::before{
  content:"+";font-family:var(--font-num);font-size:20px;font-weight:600;
  color:var(--accent);right:14px;top:50%;transform:translateY(-50%);
  margin-top:0;line-height:1;
}
.faq-acc .accordion-item.is-active .accordion-title::before{content:"–";}
.faq-acc .accordion-content{
  border:none;background:transparent;padding:0 44px 24px 18px;
  color:var(--ink-70);font-size:15.5px;
}
.faq-acc .accordion-content p{max-width:70ch;}

/* final CTA */
.final-cta{
  background:var(--surface-dark);color:var(--on-dark);
  border-radius:var(--radius-lg);padding:40px 28px;
  position:relative;overflow:hidden;
}
.final-cta::before{
  content:"";position:absolute;left:0;top:0;width:100%;height:3px;
  background:linear-gradient(90deg,var(--accent) 0%,var(--accent) 22%,transparent 22%);
}
.final-cta h2{color:var(--on-dark);}
.final-cta p{color:var(--on-dark-50);margin-top:14px;}
.final-cta .btn-ghost{color:var(--on-dark);border-color:rgba(245,243,239,.4);}
.final-cta .btn-ghost:hover{background:var(--on-dark);color:var(--ink);border-color:var(--on-dark);}
.final-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
@media screen and (min-width:1024px){
  .final-cta{padding:56px 56px;}
}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--radius-badge);
  font-size:12px;font-weight:600;letter-spacing:.04em;
  background:var(--jade-soft);color:var(--jade);border:1px solid rgba(31,111,107,.22);
}
.badge-accent{background:var(--accent-soft);color:var(--accent);border-color:rgba(217,72,43,.22);}

/* ---------- footer ---------- */
.site-footer{background:var(--surface-dark);color:var(--on-dark-50);margin-top:64px;padding:56px 0 24px;}
.footer-row{display:grid;gap:36px;}
@media screen and (min-width:768px){.footer-row{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:28px;}}
.footer-brand{display:inline-flex;align-items:center;gap:10px;color:var(--on-dark);font-weight:700;font-size:17px;margin-bottom:16px;}
.footer-col--brand p{font-size:14.5px;color:var(--on-dark-50);max-width:34ch;line-height:1.8;}
.footer-title{font-size:14px;color:var(--on-dark);margin-bottom:16px;letter-spacing:.04em;}
.footer-links li+li{margin-top:10px;}
.footer-links a{font-size:14.5px;color:var(--on-dark-50);transition:color var(--tr);}
.footer-links a:hover{color:var(--on-dark);}
.footer-bottom{
  margin-top:44px;padding-top:22px;
  border-top:1px solid rgba(245,243,239,.12);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:var(--on-dark-50);
}

/* ---------- mobile tab ---------- */
.mobile-tab{display:none;}
@media screen and (max-width:1023px){
  .nav-main{display:none;}
}
@media screen and (max-width:639px){
  body{padding-bottom:calc(64px + env(safe-area-inset-bottom));}
  .nav-cta{display:none;}
  .mobile-tab{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:80;
    background:rgba(255,255,255,.96);backdrop-filter:blur(10px);
    border-top:1px solid var(--line);
    padding-bottom:env(safe-area-inset-bottom);
  }
  .mobile-tab a{
    flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
    gap:4px;height:56px;font-size:11.5px;color:var(--ink-50);position:relative;
  }
  .mobile-tab a i{font-size:17px;}
  .mobile-tab a.is-active{color:var(--accent);}
  .mobile-tab a.is-active::before{
    content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
    width:26px;height:2px;background:var(--accent);border-radius:2px;
  }
}

/* reveal */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --ink:#14161B;
  --ink-70:rgba(20,22,27,.72);
  --ink-50:rgba(20,22,27,.52);
  --ink-30:rgba(20,22,27,.3);
  --accent:#D9482B;
  --accent-dark:#B93A20;
  --accent-soft:rgba(217,72,43,.14);
  --jade:#1F6F6B;
  --bg:#F7F5F1;
  --surface:#FFFFFF;
  --surface-dark:#14161B;
  --line:#E6E1D9;
  --on-dark:#F5F3EF;
  --on-dark-2:#B9B5AC;
  --r-card:12px;
  --r-btn:10px;
  --r-img:12px;
  --r-badge:4px;
  --r-lg:20px;
  --sh-1:0 1px 2px rgba(20,22,27,.04);
  --sh-2:0 10px 28px rgba(20,22,27,.10);
  --sh-3:0 20px 48px rgba(20,22,27,.14);
  --ease:cubic-bezier(.4,0,.2,1);
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding-bottom:calc(60px + env(safe-area-inset-bottom));
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.75;
  color:var(--ink-70);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease),border-color .18s var(--ease)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--jade);outline-offset:2px;border-radius:6px}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.02em;line-height:1.25}
p{margin:0}
ul,ol{margin:0}
button{font:inherit;cursor:pointer;border:none;background:none}
.grid-container{max-width:1200px;padding-left:20px;padding-right:20px;margin-left:auto;margin-right:auto}
@media (min-width:1024px){.grid-container{padding-left:32px;padding-right:32px}}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,245,241,.86);
  backdrop-filter:saturate(150%) blur(14px);
  border-bottom:1px solid transparent;
  transition:background .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.site-header.is-scrolled{background:rgba(255,255,255,.92);border-bottom-color:var(--line);box-shadow:var(--sh-1)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:700;color:var(--ink);letter-spacing:-.01em;white-space:nowrap}
.brand-mark{position:relative;width:22px;height:22px;flex:0 0 22px;border-radius:6px;background:var(--accent)}
.brand-mark::after{content:"";position:absolute;inset:6px;border:2px solid #fff;border-radius:2px}
.nav-main{display:flex;align-items:center;gap:4px}
.nav-link{position:relative;padding:10px 14px;font-size:15px;color:var(--ink-70);border-radius:8px;transition:color .18s var(--ease),background .18s var(--ease)}
.nav-link:hover{color:var(--ink);background:rgba(20,22,27,.05)}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;border-radius:2px;background:var(--accent)}
.nav-tools{display:flex;align-items:center;gap:12px}
@media (max-width:1023px){
  .nav-main,.nav-cta{display:none}
  .nav-inner{height:62px}
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15.5px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),box-shadow .2s var(--ease),transform .18s var(--ease);
}
.btn i,.btn .arrow{transition:transform .18s var(--ease)}
.btn:hover .arrow{transform:translateX(4px)}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark);box-shadow:var(--sh-2);color:#fff}
.btn-ghost{border-color:rgba(20,22,27,.22);color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--ink);border-color:var(--ink);color:var(--on-dark)}
.btn-ghost-light{border-color:rgba(245,243,239,.35);color:var(--on-dark)}
.btn-ghost-light:hover{background:var(--on-dark);color:var(--ink);border-color:var(--on-dark)}
.btn-sm{min-height:42px;padding:0 18px;font-size:14.5px}
.btn-lg{min-height:52px;padding:0 28px}
.btn-accent{background:var(--accent);color:#fff}

/* ============ 通用标签 / 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 9px;border-radius:var(--r-badge);
  font-size:12px;font-weight:600;line-height:1.6;letter-spacing:.02em;
  background:rgba(20,22,27,.06);color:var(--ink);
}
.badge--accent{background:rgba(217,72,43,.12);color:var(--accent)}
.badge--jade{background:transparent;border:1px solid rgba(31,111,107,.4);color:var(--jade)}

/* ============ 面包屑 ============ */
.crumb-wrap{padding-top:28px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;padding:0;margin:0;font-size:13.5px;color:var(--ink-50)}
.crumb li{display:inline-flex;align-items:center;gap:8px}
.crumb li+li::before{content:"/";color:var(--ink-30)}
.crumb a{color:var(--ink-50)}
.crumb a:hover{color:var(--accent)}
.crumb .is-current{color:var(--ink-70)}

/* ============ 文章头部 ============ */
.post-hero{padding:22px 0 0}
.post-head{max-width:880px}
.post-title{font-size:clamp(30px,3.8vw,46px);line-height:1.2;margin-top:16px;letter-spacing:-.02em}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;margin-top:20px;font-size:13.5px;color:var(--ink-50)}
.post-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--ink-30)}
.post-lead{margin-top:20px;max-width:70ch;font-size:17.5px;line-height:1.8;color:var(--ink-70)}
.post-figure{margin-top:36px}
.post-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--sh-1)}
.post-figure figcaption{margin-top:12px;font-size:13px;color:var(--ink-50);text-align:center}

/* ============ 文章主体布局 ============ */
.post-main{padding:56px 0 0}
.post-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:48px}
@media (min-width:1024px){
  .post-layout{grid-template-columns:minmax(0,760px) 280px;justify-content:space-between;gap:64px}
}
.post-body{font-size:17px;line-height:1.85;color:var(--ink-70);max-width:760px;overflow-wrap:break-word}
.post-body>*:first-child{margin-top:0}
.post-body h2{
  position:relative;font-size:26px;line-height:1.35;margin:48px 0 16px;padding-left:16px;
}
.post-body h2::before{content:"";position:absolute;left:0;top:.34em;bottom:.34em;width:3px;border-radius:2px;background:var(--accent)}
.post-body h3{font-size:21px;line-height:1.45;margin:36px 0 12px}
.post-body h4{font-size:18px;margin:28px 0 10px}
.post-body p{margin:0 0 20px}
.post-body ul,.post-body ol{margin:0 0 20px;padding-left:22px}
.post-body li{margin-bottom:10px}
.post-body li::marker{color:var(--accent)}
.post-body blockquote{
  margin:28px 0;padding:18px 24px;background:var(--surface);
  border-left:3px solid var(--line);border-radius:0 var(--r-card) var(--r-card) 0;color:var(--ink-70);
}
.post-body blockquote p:last-child{margin-bottom:0}
.post-body img{border-radius:var(--r-img);margin:26px 0;height:auto}
.post-body figure{margin:26px 0}
.post-body figcaption{font-size:13px;color:var(--ink-50);text-align:center;margin-top:10px}
.post-body a{color:var(--accent);border-bottom:1px solid rgba(217,72,43,.32)}
.post-body a:hover{border-bottom-color:var(--accent)}
.post-body table{width:100%;display:block;overflow-x:auto;border-collapse:collapse;font-size:15px;margin:24px 0;background:var(--surface);border-radius:var(--r-card)}
.post-body th,.post-body td{padding:12px 16px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap}
.post-body th{background:rgba(20,22,27,.03);color:var(--ink);font-weight:600}
.post-body hr{border:none;border-top:1px solid var(--line);margin:40px 0}
.post-body strong{color:var(--ink);font-weight:600}

/* 空态 */
.post-empty{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  min-height:260px;padding:56px 32px;text-align:center;box-shadow:var(--sh-1);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
}
.post-empty .empty-icon{
  width:64px;height:64px;border-radius:16px;border:1.5px dashed var(--ink-30);
  display:flex;align-items:center;justify-content:center;color:var(--ink-30);font-size:22px;
}
.post-empty h2{font-size:22px}
.post-empty p{max-width:44ch;font-size:15px;color:var(--ink-50)}

/* ============ 侧栏 ============ */
.post-side{display:none}
@media (min-width:1024px){
  .post-side{display:block;position:sticky;top:96px;align-self:start}
}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-1);margin-bottom:20px}
.side-title{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-title::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--accent)}
.side-list{list-style:none;padding:0;margin:0}
.side-list li{padding:10px 0;border-bottom:1px dashed var(--line);font-size:14.5px;line-height:1.6}
.side-list li:last-child{border-bottom:none;padding-bottom:0}
.side-list a{color:var(--ink-70);display:flex;gap:8px}
.side-list a:hover{color:var(--accent)}
.side-list .idx{color:var(--accent);font-weight:700;font-size:13px;flex:0 0 auto}
.side-note{font-size:13.5px;line-height:1.75;color:var(--ink-50)}
.side-card--dark{background:var(--surface-dark);border-color:transparent}
.side-card--dark .side-title{color:var(--on-dark)}
.side-card--dark .side-note{color:var(--on-dark-2)}
.side-card--dark .btn{width:100%;margin-top:16px}

/* ============ 相关推荐 ============ */
.related{padding:72px 0 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.section-head h2{font-size:clamp(22px,2.2vw,28px)}
.section-head .more{font-size:14.5px;color:var(--accent);display:inline-flex;align-items:center;gap:6px}
.section-head .more:hover .arrow{transform:translateX(4px)}
.related-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:640px){.related-grid{grid-template-columns:repeat(3,1fr)}}
.rcard{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.rcard:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.rcard img{width:100%;aspect-ratio:3/2;object-fit:cover;transition:transform .4s var(--ease)}
.rcard:hover img{transform:scale(1.03)}
.rcard__body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1}
.rcard__title{font-size:17px;line-height:1.45;font-weight:600;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rcard__desc{font-size:14px;line-height:1.7;color:var(--ink-50);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.rcard__foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-50);padding-top:6px}
.rcard__foot i{color:var(--accent)}

/* 编号列表式推荐（与卡片视觉区分） */
.related-list{list-style:none;padding:0;margin:32px 0 0;border-top:1px solid var(--line)}
.related-list li{display:flex;gap:16px;align-items:baseline;padding:18px 0;border-bottom:1px solid var(--line)}
.related-list .num{font-size:14px;font-weight:700;color:var(--accent);flex:0 0 28px}
.related-list a{font-size:16px;font-weight:600;color:var(--ink)}
.related-list a:hover{color:var(--accent)}
.related-list .meta{font-size:13px;color:var(--ink-50);margin-left:auto;white-space:nowrap}

/* ============ CTA 深色区 ============ */
.cta-band{margin-top:88px;background:var(--surface-dark);border-radius:var(--r-lg);padding:56px 32px;color:var(--on-dark)}
@media (min-width:1024px){.cta-band{padding:64px 56px}}
.cta-grid{display:grid;grid-template-columns:1fr;gap:36px}
@media (min-width:1024px){.cta-grid{grid-template-columns:1fr 1fr;gap:56px;align-items:center}}
.cta-band h2{color:var(--on-dark);font-size:clamp(24px,2.6vw,32px);line-height:1.3}
.cta-band p{color:var(--on-dark-2);font-size:15.5px;line-height:1.8;margin-top:14px;max-width:52ch}
.cta-form{display:grid;grid-template-columns:1fr;gap:16px}
@media (min-width:640px){.cta-form{grid-template-columns:1fr 1fr;align-items:end}
.cta-form .field--full{grid-column:1 / -1}}
.field label{display:block;font-size:13px;color:var(--on-dark-2);margin-bottom:8px}
.field input{
  width:100%;min-height:48px;padding:0 14px;font-size:15px;color:var(--ink);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-btn);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.field input:hover{border-color:var(--ink-30)}
.field input:focus{border-color:var(--ink);box-shadow:0 0 0 3px var(--accent-soft);outline:none}
.cta-form .btn{width:100%;min-height:52px}
.cta-terms{font-size:12.5px;color:var(--ink-30);grid-column:1/-1;color:#7c7a74}

/* ============ 页脚 ============ */
.site-footer{margin-top:96px;background:var(--surface-dark);color:var(--on-dark-2);padding:64px 0 0}
.footer-row{display:grid;grid-template-columns:1fr;gap:36px}
@media (min-width:640px){.footer-row{grid-template-columns:1fr 1fr}}
@media (min-width:1024px){.footer-row{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:48px}}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:var(--on-dark);margin-bottom:16px}
.footer-col--brand p{font-size:14.5px;line-height:1.8;max-width:46ch;color:var(--on-dark-2)}
.footer-title{font-size:14px;color:var(--on-dark);margin-bottom:16px;font-weight:600;letter-spacing:.02em}
.footer-links{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px}
.footer-links a{font-size:14.5px;color:var(--on-dark-2);transition:color .18s var(--ease)}
.footer-links a:hover{color:var(--accent)}
.footer-bottom{
  margin-top:56px;padding:22px 0;border-top:1px solid rgba(245,243,239,.12);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:13px;color:var(--ink-30);
  color:#7c7a74;
}

/* ============ 移动端底部 Tab ============ */
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  display:grid;grid-template-columns:repeat(4,1fr);
  background:rgba(255,255,255,.96);backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -4px 20px rgba(20,22,27,.06);
}
.tab-item{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  height:60px;font-size:10.5px;color:var(--ink-50);letter-spacing:0;
}
.tab-item i{font-size:17px}
.tab-item.is-active{color:var(--accent)}
.tab-item.is-active::before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:26px;height:2px;border-radius:0 0 2px 2px;background:var(--accent)}
@media (min-width:1024px){
  .mobile-tabbar{display:none}
  body{padding-bottom:0}
}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion: reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
  *{animation:none!important;transition:none!important}
}

/* roulang page: category2 */
:root{
  --ink:#14161B;
  --ink-70:#3E424B;
  --ink-50:#6E727C;
  --ink-30:#A9ACB4;
  --accent:#D9482B;
  --accent-dark:#B93A20;
  --jade:#1F6F6B;
  --bg:#F7F5F1;
  --surface:#FFFFFF;
  --surface-dark:#14161B;
  --line:#E6E1D9;
  --on-dark:#F5F3EF;
  --on-dark-2:#B9B5AC;
  --radius-card:12px;
  --radius-btn:10px;
  --radius-badge:4px;
  --radius-lg:20px;
  --shadow-1:0 1px 2px rgba(20,22,27,.04);
  --shadow-2:0 10px 28px rgba(20,22,27,.10);
  --shadow-3:0 20px 48px rgba(20,22,27,.14);
  --container:1200px;
  --ease:cubic-bezier(.4,0,.2,1);
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --font-num:"Inter","IBM Plex Sans","Helvetica Neue",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-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--ink-70);
  background:var(--bg);
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.02em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
h1{font-size:clamp(40px,5vw,64px);line-height:1.08}
h2{font-size:clamp(28px,3vw,40px);line-height:1.2}
h3{font-size:22px;line-height:1.4;font-weight:600}
::selection{background:rgba(217,72,43,.16)}
.grid-container{max-width:var(--container);margin:0 auto;padding-left:20px;padding-right:20px;width:100%}
@media(min-width:1024px){.grid-container{padding-left:32px;padding-right:32px}}
.section{padding:64px 0}
@media(min-width:1024px){.section{padding:112px 0}}
.section--tight{padding:56px 0}
@media(min-width:1024px){.section--tight{padding:80px 0}}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;letter-spacing:.16em;color:var(--ink-50);text-transform:uppercase;
  font-family:var(--font-num);font-weight:600;
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--accent);flex:none}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{margin:14px 0 16px}
.section-head p{font-size:16.5px;color:var(--ink-70)}
.lead{font-size:17px;line-height:1.8;color:var(--ink-70);max-width:70ch}

/* 按钮体系 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 24px;border-radius:var(--radius-btn);
  border:1px solid transparent;background:transparent;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.btn .arrow{transition:transform .18s var(--ease)}
.btn:hover .arrow{transform:translateX(4px)}
.btn:focus-visible{outline:2px solid var(--jade);outline-offset:2px}
.btn-primary{background:var(--accent);color:#fff;min-height:52px;box-shadow:0 6px 18px rgba(217,72,43,.20)}
.btn-primary:hover{background:var(--accent-dark);box-shadow:0 10px 24px rgba(217,72,43,.26)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{border-color:var(--ink);color:var(--ink)}
.btn-outline:hover{background:var(--ink);color:#fff}
.btn-ghost{border-color:rgba(245,243,239,.38);color:var(--on-dark);min-height:52px}
.btn-ghost:hover{background:rgba(245,243,239,.12);border-color:rgba(245,243,239,.6)}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--ink);
  padding:6px 0;border-bottom:2px solid var(--accent);
}
.btn-text:hover{color:var(--accent)}
.btn-text .arrow{transition:transform .18s var(--ease)}
.btn-text:hover .arrow{transform:translateX(4px)}

/* 徽章与标签 */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 9px;border-radius:var(--radius-badge);
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:rgba(20,22,27,.07);color:var(--ink-70);
}
.badge--accent{background:rgba(217,72,43,.10);color:var(--accent)}
.badge--jade{background:transparent;border:1px solid rgba(31,111,107,.45);color:var(--jade)}
.badge-row{display:flex;flex-wrap:wrap;gap:10px}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,245,241,.9);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 4px 18px rgba(20,22,27,.05)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.brand-mark{position:relative;width:22px;height:22px;border-radius:4px;background:var(--ink);flex:none}
.brand-mark::after{content:"";position:absolute;inset:5px;border:2px solid var(--accent)}
.nav-main{display:flex;align-items:center;gap:30px}
.nav-link{position:relative;padding:8px 0;font-size:15px;color:var(--ink-70);transition:color .18s var(--ease)}
.nav-link:hover{color:var(--ink)}
.nav-link:focus-visible{outline:2px solid var(--jade);outline-offset:4px;border-radius:4px}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent)}
.nav-tools{display:flex;align-items:center;gap:14px}
.nav-cta{min-height:44px;padding:0 20px;font-size:14.5px}

/* 移动底部 Tab */
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:90;display:none;
  background:rgba(255,255,255,.97);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
.tab-item{
  position:relative;flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  height:56px;font-size:11px;color:var(--ink-50);transition:color .18s var(--ease);
}
.tab-item i{font-size:17px}
.tab-item.is-active{color:var(--accent)}
.tab-item.is-active::before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:26px;height:2px;background:var(--accent)}
.tab-item:focus-visible{outline:2px solid var(--jade);outline-offset:-2px}

@media(max-width:1023px){
  .nav-main,.nav-tools{display:none}
  .mobile-tabbar{display:flex}
  body{padding-bottom:calc(56px + env(safe-area-inset-bottom))}
}

/* 分类页头（深色块） */
.cat-hero{position:relative;background:var(--surface-dark);color:var(--on-dark);overflow:hidden}
.cat-hero__media{position:absolute;inset:0}
.cat-hero__media img{width:100%;height:100%;object-fit:cover;opacity:.30}
.cat-hero__media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(20,22,27,.96) 0%,rgba(20,22,27,.84) 52%,rgba(20,22,27,.62) 100%);
}
.cat-hero__inner{position:relative;padding:52px 0 60px}
@media(min-width:1024px){.cat-hero__inner{padding:72px 0 84px}}
.cat-hero h1{color:var(--on-dark);font-size:clamp(30px,3.6vw,50px);line-height:1.12;margin:20px 0 18px;max-width:18ch}
.cat-hero__sub{font-size:17px;line-height:1.8;color:var(--on-dark-2);max-width:56ch}
.cat-hero .eyebrow{color:var(--on-dark-2)}
.cat-hero .eyebrow::before{background:var(--accent)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--on-dark-2)}
.crumb a{color:var(--on-dark-2);transition:color .18s var(--ease)}
.crumb a:hover{color:var(--on-dark)}
.crumb .sep{opacity:.5}
.crumb [aria-current="page"]{color:var(--on-dark);font-weight:600}
.hero-panel{
  margin-top:36px;border:1px solid rgba(245,243,239,.16);border-radius:var(--radius-lg);
  background:rgba(245,243,239,.05);padding:8px 22px;
}
@media(min-width:1024px){.hero-panel{margin-top:0}}
.hero-stat{display:flex;align-items:baseline;justify-content:space-between;gap:16px;padding:18px 0;border-bottom:1px solid rgba(245,243,239,.12)}
.hero-stat:last-child{border-bottom:0}
.hero-stat__num{font-family:var(--font-num);font-size:34px;font-weight:600;color:var(--on-dark);line-height:1;letter-spacing:-.02em}
.hero-stat__num small{font-size:14px;color:var(--accent);margin-left:4px;font-weight:600}
.hero-stat__label{font-size:14px;color:var(--on-dark-2)}

/* 侧栏导航 */
.side-nav{position:static;margin-bottom:28px}
@media(min-width:1024px){.side-nav{position:sticky;top:96px;margin-bottom:0}}
.side-nav__title{font-size:13px;font-family:var(--font-num);font-weight:600;letter-spacing:.14em;color:var(--ink-50);text-transform:uppercase;margin-bottom:14px}
.side-nav__list{display:flex;gap:10px;overflow-x:auto;padding-bottom:6px;-webkit-overflow-scrolling:touch}
@media(min-width:1024px){.side-nav__list{display:block;overflow:visible;border-left:1px solid var(--line);padding-bottom:0}}
.side-nav__list a{
  display:block;white-space:nowrap;font-size:14.5px;color:var(--ink-70);
  padding:8px 14px;border:1px solid var(--line);border-radius:var(--radius-btn);background:var(--surface);
  transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);
}
.side-nav__list a:hover{color:var(--ink);border-color:var(--ink-30)}
.side-nav__list a.is-active{color:var(--accent);border-color:rgba(217,72,43,.45);background:rgba(217,72,43,.05)}
@media(min-width:1024px){
  .side-nav__list a{border:0;background:transparent;border-radius:0;padding:9px 0 9px 18px;position:relative}
  .side-nav__list a.is-active{background:transparent;color:var(--accent)}
  .side-nav__list a.is-active::before{content:"";position:absolute;left:-1px;top:8px;bottom:8px;width:2px;background:var(--accent)}
}
.side-note{
  margin-top:22px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px;box-shadow:var(--shadow-1);
}
.side-note h4{font-size:15px;margin-bottom:8px}
.side-note p{font-size:14px;color:var(--ink-70);margin-bottom:14px}

/* 卡片网格 */
.card-grid{margin-top:-12px}
.info-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
  margin-bottom:24px;
}
.info-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.info-card__media{aspect-ratio:3/2;overflow:hidden;background:#EFECE6}
.info-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.info-card:hover .info-card__media img{transform:scale(1.03)}
.info-card__body{display:flex;flex-direction:column;gap:12px;padding:22px 22px 24px;flex:1}
.info-card__body h3{font-size:19px;line-height:1.45}
.info-card__body p{font-size:14.5px;color:var(--ink-70);line-height:1.75}
.info-card__foot{margin-top:auto;padding-top:6px;display:flex;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid var(--line);padding-top:16px}
.info-card__foot span{font-size:12.5px;color:var(--ink-50)}
.info-card__foot a{font-size:14px;font-weight:600;color:var(--ink);display:inline-flex;align-items:center;gap:6px}
.info-card__foot a:hover{color:var(--accent)}
.info-card__foot a .arrow{transition:transform .18s var(--ease)}
.info-card__foot a:hover .arrow{transform:translateX(4px)}

/* 对照区 */
.compare-panel{
  height:100%;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow-1);
  transition:box-shadow .2s var(--ease),border-color .2s var(--ease);
  margin-bottom:24px;
}
.compare-panel:hover{box-shadow:var(--shadow-2);border-color:var(--ink-30)}
.compare-panel__head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px}
.compare-panel__head h3{font-size:20px}
.compare-panel__list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 0;border-bottom:1px dashed var(--line);
  font-size:15.5px;color:var(--ink-70);
}
.compare-panel__list li:last-child{border-bottom:0}
.compare-panel__list i{color:var(--jade);font-size:14px;margin-top:6px;flex:none}
.compare-panel--alt .compare-panel__list i{color:var(--accent)}
.compare-panel__foot{margin-top:18px}

/* 图文区块 */
.figure-block{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-1)}
.figure-block img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.figure-block__body{padding:30px 26px}
@media(min-width:1024px){.figure-block__body{padding:44px 40px}}
.figure-block__body h2{margin:14px 0 18px;font-size:clamp(24px,2.4vw,32px)}
.figure-block__body p{font-size:16px;color:var(--ink-70);margin-bottom:16px}
.tick-list li{display:flex;gap:12px;align-items:flex-start;padding:10px 0;font-size:15.5px;color:var(--ink-70)}
.tick-list i{color:var(--accent);font-size:13px;margin-top:7px;flex:none}

/* 步骤列表 */
.step-list{border-top:1px solid var(--line)}
.step-list > li{
  display:grid;grid-template-columns:56px 1fr;gap:18px;
  padding:24px 0;border-bottom:1px solid var(--line);
  transition:background-color .2s var(--ease);
}
@media(min-width:768px){.step-list > li{grid-template-columns:96px 1fr;gap:28px;padding:30px 0}}
.step-list > li:hover{background:rgba(20,22,27,.02)}
.step-num{font-family:var(--font-num);font-size:30px;font-weight:600;color:var(--accent);line-height:1;letter-spacing:-.02em}
@media(min-width:768px){.step-num{font-size:40px}}
.step-body h3{font-size:19px;margin-bottom:8px}
.step-body p{font-size:15.5px;color:var(--ink-70)}

/* FAQ */
.faq-wrap{border-top:1px solid var(--line);padding-top:36px}
.faq-aside h2{margin:14px 0 16px;font-size:clamp(24px,2.4vw,32px)}
.faq-aside p{font-size:15.5px;color:var(--ink-70);margin-bottom:20px}
.faq-list.accordion{background:transparent;border:0;margin:0}
.faq-list .accordion-item{border:0;border-bottom:1px solid var(--line);background:transparent}
.faq-list .accordion-title{
  position:relative;display:block;border:0;background:transparent;
  padding:22px 48px 22px 0;font-size:18px;font-weight:600;color:var(--ink);
  transition:color .18s var(--ease);
}
.faq-list .accordion-title:hover{color:var(--accent)}
.faq-list .accordion-title:focus-visible{outline:2px solid var(--jade);outline-offset:-2px}
.faq-list .accordion-title::before{
  content:"+";position:absolute;right:8px;top:50%;transform:translateY(-50%);
  font-family:var(--font-num);font-size:22px;font-weight:400;color:var(--ink-50);transition:color .18s var(--ease)
}
.faq-list .is-active > .accordion-title{color:var(--accent)}
.faq-list .is-active > .accordion-title::before{content:"–";color:var(--accent)}
.faq-list .accordion-content{
  border:0;border-top:0;background:transparent;
  padding:0 48px 24px 0;color:var(--ink-70);font-size:15.5px;line-height:1.85;
}
.faq-list .is-active > .accordion-content{position:relative}
.faq-list .is-active > .accordion-content::before{
  content:"";position:absolute;left:-16px;top:4px;bottom:24px;width:2px;background:var(--accent);
}
@media(max-width:1023px){.faq-list .is-active > .accordion-content::before{display:none}}

/* CTA 区 */
.cta-band{background:var(--surface-dark);color:var(--on-dark);padding:64px 0}
@media(min-width:1024px){.cta-band{padding:96px 0}}
.cta-band h2{color:var(--on-dark);font-size:clamp(26px,2.8vw,38px);margin-bottom:18px}
.cta-band p{color:var(--on-dark-2);font-size:16px}
.cta-points{margin-top:24px}
.cta-points li{display:flex;gap:12px;align-items:flex-start;padding:9px 0;font-size:15px;color:var(--on-dark-2)}
.cta-points i{color:var(--accent);font-size:13px;margin-top:7px;flex:none}
.cta-form{
  background:rgba(245,243,239,.05);border:1px solid rgba(245,243,239,.16);
  border-radius:var(--radius-lg);padding:26px;
}
@media(min-width:1024px){.cta-form{padding:32px}}
.cta-form .field{margin-bottom:18px}
.cta-form label{display:block;font-size:13.5px;color:var(--on-dark-2);margin-bottom:8px;letter-spacing:.02em}
.cta-form input,.cta-form textarea{
  width:100%;background:#fff;color:var(--ink);
  border:1px solid var(--line);border-radius:var(--radius-btn);
  min-height:52px;padding:0 16px;font-size:15px;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.cta-form textarea{min-height:108px;padding:14px 16px;line-height:1.7;resize:vertical}
.cta-form input:hover,.cta-form textarea:hover{border-color:var(--ink-30)}
.cta-form input:focus,.cta-form textarea:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 3px rgba(217,72,43,.14)}
.cta-form .btn{width:100%;margin-top:6px}
.cta-note{margin-top:16px;font-size:13px;color:var(--on-dark-2);line-height:1.7}

/* 页脚 */
.site-footer{background:var(--surface-dark);color:var(--on-dark-2);padding-top:64px}
.footer-row{padding-bottom:44px}
.footer-col{margin-bottom:32px}
@media(min-width:1024px){.footer-col{margin-bottom:24px}}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:var(--on-dark);margin-bottom:16px}
.footer-col--brand p{font-size:14.5px;line-height:1.8;color:var(--on-dark-2);max-width:34ch}
.footer-title{font-size:15px;color:var(--on-dark);margin-bottom:16px;letter-spacing:.02em}
.footer-links li{margin-bottom:11px;font-size:14.5px}
.footer-links a{color:var(--on-dark-2);transition:color .18s var(--ease)}
.footer-links a:hover{color:var(--on-dark)}
.footer-links a:focus-visible{outline:2px solid var(--jade);outline-offset:3px;border-radius:3px}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
  border-top:1px solid rgba(245,243,239,.12);padding:22px 0 30px;font-size:13px;color:var(--on-dark-2);
}
@media(max-width:1023px){.footer-bottom{padding-bottom:calc(30px)}}

/* 入场动效 */
.js .reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.js .reveal.is-visible{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
  .js .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}