/* roulang page: index */
:root{
  --brand-900:#0B2E28;
  --brand-700:#10403B;
  --brand-500:#1E6B5C;
  --accent-500:#FF6B35;
  --accent-hover:#E85A28;
  --accent-300:#FFB08A;
  --mint-300:#7FD1B9;
  --paper:#F7F5F0;
  --surface:#FFFFFF;
  --ink-900:#16191A;
  --ink-600:#4A5350;
  --ink-400:#8A9391;
  --line:#E3E1DA;
  --row-hover:#FBFAF7;
  --radius-card:16px;
  --radius-img:14px;
  --radius-field:12px;
  --radius-block:24px;
  --shadow-base:0 1px 2px rgba(22,25,26,.05), 0 8px 24px rgba(16,64,59,.06);
  --shadow-hover:0 12px 32px rgba(16,64,59,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-900);
  font-family:'PingFang SC','Microsoft YaHei','Noto Sans SC','Helvetica Neue',Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
::selection{background:#FFD9C7;color:var(--brand-900);}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:6px;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#EFEDE7;}
::-webkit-scrollbar-thumb{background:#C9C5B9;border-radius:999px;border:2px solid #EFEDE7;}
::-webkit-scrollbar-thumb:hover{background:var(--brand-500);}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:88px 0;}
.h1{font-size:clamp(30px,4.4vw,48px);font-weight:800;line-height:1.22;letter-spacing:-.01em;}
.h2{font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.3;letter-spacing:-.01em;}
.h3{font-size:20px;font-weight:600;line-height:1.5;}
.lead{color:var(--ink-600);font-size:16px;line-height:1.85;max-width:720px;}
.muted{color:var(--ink-400);font-size:13px;letter-spacing:.02em;}

/* ============ 浮动 Dock 导航 ============ */
.dock-wrap{
  position:fixed;top:16px;left:0;right:0;z-index:80;
  display:flex;justify-content:center;padding:0 20px;pointer-events:none;
}
.dock{
  pointer-events:auto;width:100%;max-width:1080px;height:64px;
  display:flex;align-items:center;gap:20px;
  padding:0 14px 0 20px;border-radius:999px;
  background:rgba(247,245,240,.86);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border:1px solid var(--line);box-shadow:var(--shadow-base);
  transition:height .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.dock.shrink{height:56px;background:rgba(247,245,240,.95);box-shadow:0 6px 28px rgba(16,64,59,.14);}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:32px;height:32px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(150deg,var(--brand-700),var(--brand-500));
  position:relative;overflow:hidden;
}
.logo-mark::before{
  content:"";position:absolute;width:26px;height:26px;border-radius:50%;
  border:2px solid var(--mint-300);left:8px;top:9px;opacity:.9;
}
.logo-mark::after{
  content:"";position:absolute;width:6px;height:6px;border-radius:50%;
  background:var(--accent-500);left:11px;top:6px;
}
.logo-text{font-size:16px;font-weight:800;letter-spacing:-.01em;color:var(--brand-900);white-space:nowrap;}
.dock-nav{display:flex;align-items:center;gap:24px;margin-left:auto;}
.dock-link{
  position:relative;font-size:14px;color:var(--brand-700);white-space:nowrap;
  padding:6px 2px;transition:color .2s var(--ease);
}
.dock-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--accent-500);border-radius:2px;transform:scaleX(0);
  transform-origin:left;transition:transform .22s var(--ease);
}
.dock-link:hover{color:var(--brand-900);}
.dock-link:hover::after,.dock-link.active::after{transform:scaleX(1);}
.dock-link.active{color:var(--brand-900);font-weight:600;}
.dock-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.icon-btn{
  width:38px;height:38px;border-radius:999px;border:1px solid var(--line);
  background:#fff;color:var(--brand-700);display:flex;align-items:center;justify-content:center;
  cursor:pointer;transition:all .2s var(--ease);
}
.icon-btn:hover{border-color:var(--brand-500);color:var(--brand-900);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 20px;border-radius:999px;border:1.5px solid transparent;
  font-size:14px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:all .22s var(--ease);
}
.btn-primary{background:var(--accent-500);color:#fff;}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);filter:brightness(.95);}
.btn-ghost{background:transparent;color:var(--brand-700);border-color:var(--brand-700);}
.btn-ghost:hover{background:rgba(16,64,59,.08);}
.btn-lg{height:48px;padding:0 26px;font-size:15px;}
.btn-block{width:100%;}
.hamburger{display:none;}

/* 移动端抽屉 */
.drawer{
  position:fixed;inset:0;z-index:90;background:var(--brand-900);color:var(--paper);
  padding:28px 24px 24px;display:flex;flex-direction:column;
  transform:translateY(-100%);opacity:0;visibility:hidden;
  transition:transform .28s var(--ease),opacity .28s var(--ease),visibility .28s;
}
.drawer.open{transform:translateY(0);opacity:1;visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.drawer-close{
  width:40px;height:40px;border-radius:999px;border:1px solid rgba(255,255,255,.25);
  background:transparent;color:var(--paper);font-size:20px;cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  height:56px;display:flex;align-items:center;justify-content:space-between;
  border-bottom:1px solid rgba(255,255,255,.12);font-size:16px;
}
.drawer-nav a:hover,.drawer-nav a.active{color:var(--accent-300);}
.drawer-foot{margin-top:auto;padding-top:24px;}

/* ============ Hero ============ */
.hero{position:relative;padding:150px 0 88px;overflow:hidden;}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:72px 72px;
  -webkit-mask-image:radial-gradient(circle at 24% 18%,#000,transparent 68%);
  mask-image:radial-gradient(circle at 24% 18%,#000,transparent 68%);
}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:999px;
  background:rgba(127,209,185,.22);color:var(--brand-700);font-size:13px;font-weight:600;letter-spacing:.02em;
  margin-bottom:20px;
}
.hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--accent-500);display:block;}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.85;color:var(--ink-600);max-width:560px;}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-trust{display:flex;flex-wrap:wrap;gap:24px;margin-top:36px;}
.hero-trust span{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-600);}
.hero-trust svg{flex-shrink:0;}
.hero-media{position:relative;}
.hero-media img{
  width:100%;aspect-ratio:5/4;object-fit:cover;border-radius:var(--radius-block);
  box-shadow:var(--shadow-base);
}
.hero-float{
  position:absolute;right:-8px;bottom:-18px;background:#fff;border-radius:var(--radius-card);
  padding:14px 18px;box-shadow:0 12px 32px rgba(16,64,59,.14);display:flex;align-items:center;gap:10px;
  border:1px solid var(--line);
}
.hero-float i{width:8px;height:8px;border-radius:50%;background:var(--mint-300);display:block;}
.hero-float strong{font-size:14px;font-weight:700;color:var(--brand-900);}

/* ============ 主张条 ============ */
.claims{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.claims-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.claim{padding:34px 26px;position:relative;}
.claim + .claim{border-left:1px solid var(--line);}
.claim-num{font-size:13px;font-weight:800;color:var(--accent-500);letter-spacing:.06em;}
.claim-text{margin-top:10px;font-size:16px;font-weight:600;color:var(--brand-900);line-height:1.6;}

/* ============ 故事 / 理念 ============ */
.story-grid{display:grid;grid-template-columns:5fr 6fr;gap:56px;align-items:center;}
.story-copy p + p{margin-top:18px;}
.text-link{
  display:inline-flex;align-items:center;gap:8px;margin-top:26px;
  font-size:15px;font-weight:600;color:var(--brand-700);
  border-bottom:1.5px solid rgba(16,64,59,.25);padding-bottom:4px;
  transition:all .22s var(--ease);
}
.text-link span{transition:transform .22s var(--ease);}
.text-link:hover{border-color:var(--accent-500);color:var(--brand-900);}
.text-link:hover span{transform:translateX(4px);}
.story-media{position:relative;padding:0 0 26px 26px;}
.story-media::after{
  content:"";position:absolute;left:0;bottom:0;width:56%;height:56%;
  background:rgba(127,209,185,.28);border-radius:var(--radius-block);z-index:0;
}
.story-media img{
  position:relative;z-index:1;width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--radius-card);box-shadow:var(--shadow-base);
}

/* ============ 精选内容卡 ============ */
.picks{background:var(--surface);}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:40px;}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;}
.card{
  display:block;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-base);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#D6D3C9;}
.card-img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.card-body{padding:22px 22px 24px;}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:rgba(127,209,185,.24);color:var(--brand-700);
}
.badge-warm{background:rgba(255,176,138,.28);color:#8A3418;}
.card-title{margin-top:14px;font-size:19px;font-weight:600;line-height:1.5;color:var(--ink-900);transition:color .22s var(--ease);}
.card:hover .card-title{color:var(--brand-700);}
.card-sum{margin-top:10px;font-size:15px;line-height:1.8;color:var(--ink-600);}
.card-meta{margin-top:16px;font-size:13px;color:var(--ink-400);letter-spacing:.02em;}

/* ============ 最新信息列表 ============ */
.news-grid{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.news-side p{margin-top:16px;color:var(--ink-600);font-size:15px;}
.news-list{border-top:1px solid var(--line);}
.news-row{
  position:relative;display:grid;grid-template-columns:1fr auto;gap:20px;align-items:center;
  padding:22px 20px 22px 18px;border-bottom:1px solid var(--line);
  transition:background .2s var(--ease);
}
.news-row::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;
  background:var(--accent-500);transform:scaleY(0);transform-origin:center;
  transition:transform .2s var(--ease);
}
.news-row:hover{background:var(--row-hover);}
.news-row:hover::before{transform:scaleY(1);}
.news-title{margin-top:10px;font-size:16px;font-weight:600;color:var(--ink-900);transition:color .2s var(--ease);}
.news-row:hover .news-title{color:var(--brand-700);}
.news-sum{margin-top:6px;font-size:14px;line-height:1.75;color:var(--ink-600);}
.news-meta{display:flex;align-items:center;gap:14px;white-space:nowrap;}
.news-date{font-size:13px;color:var(--ink-400);letter-spacing:.02em;}
.news-arrow{color:var(--brand-700);font-size:16px;transition:transform .2s var(--ease);}
.news-row:hover .news-arrow{transform:translateX(4px);}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--radius-card);background:#FCFBF8;
  padding:48px 24px;text-align:center;
}
.empty-state p{margin-top:14px;color:var(--ink-600);font-size:14px;}
.empty-state .btn{margin-top:18px;}

/* ============ 信任背书 ============ */
.trust{background:var(--surface);}
.stat-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  border:1px solid var(--line);border-radius:var(--radius-block);
  padding:32px 8px;margin-bottom:48px;background:#FCFBF8;
}
.stat{text-align:center;padding:0 16px;}
.stat + .stat{border-left:1px solid var(--line);}
.stat-num{font-size:32px;font-weight:800;color:var(--brand-900);line-height:1.2;letter-spacing:-.02em;}
.stat-num em{font-style:normal;font-size:15px;font-weight:600;color:var(--accent-500);margin-left:2px;}
.stat-label{margin-top:8px;font-size:13px;color:var(--ink-400);letter-spacing:.02em;}
.quote-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.quote{
  position:relative;background:var(--paper);border-radius:var(--radius-card);
  padding:26px 26px 24px;border:1px solid var(--line);
}
.quote::before{
  content:"“";position:absolute;top:6px;left:20px;font-size:44px;line-height:1;
  color:rgba(127,209,185,.75);font-family:Georgia,serif;
}
.quote p{position:relative;margin-top:22px;font-size:15px;line-height:1.85;color:var(--ink-600);}
.quote footer{margin-top:16px;font-size:13px;color:var(--ink-400);letter-spacing:.02em;}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 4px;font-size:16px;font-weight:600;color:var(--ink-900);
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand-700);}
.faq-icon{
  flex-shrink:0;width:28px;height:28px;border-radius:999px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--brand-700);
  font-size:16px;line-height:1;transition:all .2s var(--ease);
}
.faq-item[open] .faq-icon{background:var(--accent-500);border-color:var(--accent-500);color:#fff;transform:rotate(45deg);}
.faq-answer{padding:0 44px 22px 4px;font-size:15px;line-height:1.85;color:var(--ink-600);}
.faq-item[open] .faq-answer{animation:fadeIn .2s var(--ease);}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:translateY(0);}}

/* ============ CTA ============ */
.cta-band{
  background:var(--brand-900);color:var(--paper);border-radius:var(--radius-block);
  padding:56px;display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:center;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-90px;width:320px;height:320px;border-radius:50%;
  border:1px solid rgba(127,209,185,.24);pointer-events:none;
}
.cta-band h2{color:#fff;position:relative;z-index:1;}
.cta-band p{margin-top:14px;color:rgba(247,245,240,.76);font-size:15px;line-height:1.8;position:relative;z-index:1;}
.cta-form{position:relative;z-index:1;}
.cta-row{display:flex;gap:12px;}
.field{
  flex:1;height:48px;border-radius:var(--radius-field);border:1px solid rgba(255,255,255,.28);
  background:rgba(255,255,255,.08);color:#fff;padding:0 16px;font-size:15px;
  transition:all .2s var(--ease);
}
.field::placeholder{color:rgba(247,245,240,.5);}
.field:focus{
  outline:none;border-color:var(--accent-500);
  box-shadow:0 0 0 3px rgba(255,107,53,.18);
}
.form-note{margin-top:14px;font-size:12px;color:rgba(247,245,240,.55);line-height:1.7;}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-900);color:var(--paper);padding:72px 0 0;margin-top:88px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.footer-col + .footer-col{border-left:1px solid rgba(255,255,255,.12);padding-left:40px;}
.footer-logo{display:flex;align-items:center;gap:10px;}
.footer-logo .logo-mark{background:linear-gradient(150deg,#1E6B5C,#7FD1B9);}
.footer-logo .logo-text{color:#fff;}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(247,245,240,.7);max-width:280px;}
.footer-title{font-size:14px;font-weight:700;color:#fff;letter-spacing:.04em;margin-bottom:18px;}
.footer-links li + li{margin-top:12px;}
.footer-links a{font-size:14px;color:rgba(247,245,240,.72);transition:color .2s var(--ease);}
.footer-links a:hover{color:var(--accent-300);}
.footer-contact{font-size:14px;color:rgba(247,245,240,.72);line-height:1.9;}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:rgba(247,245,240,.6);
}
.footer-bottom a{color:rgba(247,245,240,.6);}
.footer-bottom a:hover{color:#fff;text-decoration:underline;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .hero-grid{gap:40px;}
}
@media (max-width:1023px){
  .container{padding:0 28px;}
  .section{padding:72px 0;}
  .hero{padding:132px 0 72px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-sub{max-width:none;}
  .hero-media img{aspect-ratio:16/9;}
  .story-grid{grid-template-columns:1fr;gap:36px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .news-grid,.faq-grid{grid-template-columns:1fr;gap:28px;}
  .cta-band{grid-template-columns:1fr;gap:32px;padding:44px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-col + .footer-col{border-left:none;padding-left:0;}
  .dock-nav{gap:18px;}
}
@media (max-width:860px){
  .dock-nav{display:none;}
  .hamburger{display:flex;}
  .dock{padding:0 12px 0 16px;justify-content:space-between;}
  .dock-actions .btn{display:none;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .hero{padding:118px 0 56px;}
  .hero-trust{gap:16px;}
  .claims-grid{grid-template-columns:1fr 1fr;}
  .claim{padding:24px 18px;}
  .claim + .claim{border-left:none;}
  .claim:nth-child(2n){border-left:1px solid var(--line);}
  .claim:nth-child(n+3){border-top:1px solid var(--line);}
  .card-grid{grid-template-columns:1fr;}
  .stat-grid{grid-template-columns:1fr 1fr;gap:0;padding:24px 8px;}
  .stat{padding:16px;}
  .stat + .stat{border-left:none;}
  .stat:nth-child(2n){border-left:1px solid var(--line);}
  .stat:nth-child(n+3){border-top:1px solid var(--line);}
  .quote-grid{grid-template-columns:1fr;}
  .cta-band{padding:32px 24px;border-radius:20px;}
  .cta-row{flex-direction:column;}
  .cta-row .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-col + .footer-col{border-top:1px solid rgba(255,255,255,.12);padding-top:28px;}
  .site-footer{margin-top:56px;padding-top:56px;}
  .hero-float{position:static;margin-top:14px;display:inline-flex;}
  .story-media{padding:0 0 18px 18px;}
}
@media (max-width:520px){
  .hero-float{width:100%;}
  .news-row{grid-template-columns:1fr;gap:10px;}
  .news-meta{justify-content:flex-start;}
}

/* roulang page: article */
:root{
  --brand-900:#0B2E28;
  --brand-700:#10403B;
  --brand-500:#1E6B5C;
  --accent-500:#FF6B35;
  --accent-600:#E85A28;
  --accent-300:#FFB08A;
  --mint-300:#7FD1B9;
  --paper:#F7F5F0;
  --surface:#FFFFFF;
  --ink-900:#16191A;
  --ink-600:#4A5350;
  --ink-400:#8A9391;
  --line:#E3E1DA;
  --radius-card:16px;
  --radius-img:14px;
  --radius-block:24px;
  --radius-pill:999px;
  --sh-1:0 1px 2px rgba(22,25,26,.05), 0 8px 24px rgba(16,64,59,.06);
  --sh-2:0 12px 32px rgba(16,64,59,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --space-section:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-900);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg{display:block;max-width:100%}
a{color:var(--brand-700);text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease)}
a:hover{color:var(--brand-500)}
button{font:inherit;border:0;background:none;cursor:pointer;color:inherit;padding:0}
input{font:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{list-style:none;padding:0}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:6px}
::selection{background:rgba(255,107,53,.26);color:var(--ink-900)}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--paper)}
::-webkit-scrollbar-thumb{background:#D6D3C9;border-radius:999px;border:3px solid var(--paper)}
::-webkit-scrollbar-thumb:hover{background:var(--brand-500)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 32px}}

/* ---------- 浮动 Dock 导航 ---------- */
.dock-shell{position:fixed;top:16px;left:0;right:0;z-index:80;display:flex;justify-content:center;padding:0 16px;pointer-events:none}
.dock{
  pointer-events:auto;position:relative;display:flex;align-items:center;gap:16px;
  width:100%;max-width:1080px;height:64px;padding:0 12px 0 18px;
  border:1px solid var(--line);border-radius:var(--radius-pill);
  background:rgba(247,245,240,.86);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  box-shadow:var(--sh-1);
  transition:height .2s var(--ease),background-color .2s var(--ease),box-shadow .2s var(--ease);
}
.dock.is-scrolled{height:56px;background:rgba(247,245,240,.95);box-shadow:0 12px 32px rgba(16,64,59,.14)}
.brand{display:inline-flex;align-items:center;gap:9px;flex:0 0 auto;color:var(--brand-900);font-weight:800;font-size:15px;letter-spacing:.01em;white-space:nowrap}
.brand:hover{color:var(--brand-700)}
.brand-mark{width:30px;height:30px;border-radius:50%;background:var(--brand-700);display:grid;place-items:center;flex:0 0 auto}
.brand-name{line-height:1}
.dock-nav{display:flex;align-items:center;gap:26px;margin-left:auto;flex-wrap:nowrap}
.dock-link{position:relative;font-size:14px;font-weight:600;color:var(--brand-700);white-space:nowrap;padding:6px 0}
.dock-link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;background:var(--accent-500);transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease)}
.dock-link:hover::after,.dock-link.active::after{transform:scaleX(1)}
.dock-link.active{color:var(--brand-900)}
.dock-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto}
.icon-btn{width:38px;height:38px;border-radius:var(--radius-pill);display:grid;place-items:center;color:var(--brand-700);border:1px solid transparent;transition:background-color .2s var(--ease),border-color .2s var(--ease)}
.icon-btn:hover{background:rgba(16,64,59,.07);border-color:var(--line)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 20px;border-radius:var(--radius-pill);
  font-size:14px;font-weight:700;letter-spacing:.01em;white-space:nowrap;
  transition:transform .22s var(--ease),background-color .22s var(--ease),color .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.btn-primary{background:var(--accent-500);color:#fff}
.btn-primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px rgba(232,90,40,.28)}
.btn-primary:active{transform:translateY(0);filter:brightness(.95)}
.btn-ghost{border:1.5px solid var(--brand-700);color:var(--brand-700);background:transparent}
.btn-ghost:hover{background:rgba(16,64,59,.08);color:var(--brand-700)}
.dock-cta{height:40px;padding:0 18px}
.search-pop{
  position:absolute;top:calc(100% + 10px);right:0;width:284px;padding:12px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--sh-2);display:none;
}
.search-pop.open{display:block}
.search-pop label{display:block;font-size:12.5px;color:var(--ink-400);margin-bottom:8px;letter-spacing:.02em}
.search-pop input{width:100%;height:42px;padding:0 14px;border:1px solid var(--line);border-radius:12px;background:var(--paper);font-size:14px;color:var(--ink-900)}
.search-pop input:focus{outline:none;border-color:var(--accent-500);box-shadow:0 0 0 3px rgba(255,107,53,.18)}
.nav-toggle{display:none;width:40px;height:40px;border-radius:var(--radius-pill);border:1px solid var(--line);flex-direction:column;justify-content:center;align-items:center;gap:4px;flex:0 0 auto}
.nav-toggle span{display:block;width:16px;height:2px;border-radius:2px;background:var(--brand-700)}
@media (max-width:1023px){
  .dock-nav{gap:18px}
  .dock-link{font-size:13.5px}
}
@media (min-width:768px) and (max-width:1023px){
  .dock-nav .dock-link:first-child{display:none}
}
@media (max-width:767px){
  .dock-nav{display:none}
  .nav-toggle{display:flex;margin-left:auto}
  .dock{padding:0 10px 0 14px;gap:10px}
  .dock-actions .dock-cta{display:none}
  .brand{font-size:14px}
}
.drawer{position:fixed;inset:0;z-index:120;background:var(--brand-900);color:var(--paper);padding:22px 20px 28px;display:flex;flex-direction:column;overflow-y:auto}
.drawer[hidden]{display:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid rgba(255,255,255,.12)}
.drawer-head .brand-name{color:var(--paper);font-weight:800;font-size:15px}
.drawer-close{width:40px;height:40px;border-radius:var(--radius-pill);border:1px solid rgba(255,255,255,.18);color:var(--paper);font-size:20px;line-height:1;display:grid;place-items:center}
.drawer-close:hover{background:rgba(255,255,255,.1)}
.drawer-nav{display:flex;flex-direction:column;margin-top:10px}
.drawer-link{display:flex;align-items:center;justify-content:space-between;height:56px;color:var(--paper);font-size:16px;font-weight:600;border-bottom:1px solid rgba(255,255,255,.1)}
.drawer-link:hover{color:var(--mint-300)}
.drawer-link::after{content:"→";font-size:15px;color:rgba(255,255,255,.5)}
.drawer-cta{margin-top:28px;width:100%;height:48px;font-size:15px}

/* ---------- 主体 ---------- */
main{padding-top:104px}
@media (min-width:1024px){main{padding-top:124px}}

.crumb{padding-top:4px;font-size:13px;letter-spacing:.02em;color:var(--ink-400)}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:0}
.crumb li{display:flex;align-items:center;gap:8px;min-width:0}
.crumb li+li::before{content:"/";color:var(--line)}
.crumb a{color:var(--ink-600)}
.crumb a:hover{color:var(--brand-700)}
.crumb .crumb-current{color:var(--ink-900);font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:42vw}

.post-head{padding-top:22px}
.post-head h1{font-size:clamp(30px,4.4vw,48px);font-weight:800;line-height:1.22;letter-spacing:-.01em;max-width:820px;color:var(--ink-900)}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:20px;font-size:13px;letter-spacing:.02em;color:var(--ink-400)}
.badge-mint{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--radius-pill);background:rgba(127,209,185,.26);color:var(--brand-700);font-size:12.5px;font-weight:700;letter-spacing:.01em}
.meta-dot{color:#CFCCC2}

.post-cover{margin-top:32px}
.post-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius-block);box-shadow:var(--sh-1);background:#E9E6DE}

.post-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:56px;padding:44px 0 8px}
.prose-body{width:100%;max-width:760px;margin:0 auto;font-size:17px;line-height:1.85;color:var(--ink-900)}
.post-side{display:none}
@media (min-width:1280px){
  .post-layout{grid-template-columns:minmax(0,1fr) 320px;align-items:start}
  .prose-body{margin:0;max-width:760px}
  .post-side{display:block;position:sticky;top:104px}
}

.prose-body p{margin:0 0 1.15em}
.prose-body > *:first-child{margin-top:0}
.prose-body h2{
  font-size:clamp(22px,2.4vw,28px);font-weight:700;line-height:1.35;
  margin:2.4em 0 .8em;padding-left:14px;border-left:4px solid var(--accent-500);color:var(--brand-900);
}
.prose-body h3{font-size:20px;font-weight:600;line-height:1.5;margin:1.8em 0 .6em;color:var(--brand-700)}
.prose-body h4{font-size:17px;font-weight:700;margin:1.5em 0 .5em;color:var(--brand-700)}
.prose-body ul,.prose-body ol{margin:0 0 1.2em;padding-left:1.35em}
.prose-body ul{list-style:disc}
.prose-body ol{list-style:decimal}
.prose-body li{margin:.42em 0}
.prose-body li::marker{color:var(--mint-300);font-weight:700}
.prose-body strong{font-weight:700;color:var(--brand-900)}
.prose-body a{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px;text-decoration-color:rgba(30,107,92,.42)}
.prose-body a:hover{text-decoration-color:var(--accent-500)}
.prose-body blockquote{
  margin:1.8em 0;padding:18px 22px;background:var(--paper);
  border-left:3px solid var(--accent-500);border-radius:0 12px 12px 0;color:var(--ink-600);
}
.prose-body blockquote p:last-child{margin-bottom:0}
.prose-body img{border-radius:var(--radius-img);margin:1.7em auto;width:auto;max-width:100%;height:auto}
.prose-body figure{margin:1.8em 0}
.prose-body figcaption{font-size:13px;color:var(--ink-400);text-align:center;margin-top:10px}
.prose-body table{width:100%;border-collapse:collapse;margin:1.8em 0;font-size:15px;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.prose-body th{background:#EAF4F0;color:var(--brand-900);font-weight:700;text-align:left}
.prose-body th,.prose-body td{padding:12px 16px;border-bottom:1px solid var(--line)}
.prose-body tr:last-child td{border-bottom:0}
.prose-body code{background:#EFEDE6;border-radius:6px;padding:2px 6px;font-size:14px}
.prose-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}

.empty-state{text-align:center;padding:64px 24px;background:var(--surface);border:1px dashed var(--line);border-radius:var(--radius-block)}
.empty-state svg{margin:0 auto 18px;color:var(--ink-400)}
.empty-state h2{font-size:22px;font-weight:700;color:var(--brand-900);margin-bottom:10px}
.empty-state p{color:var(--ink-600);margin-bottom:22px}

.post-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:44px;padding-top:24px;border-top:1px solid var(--line)}
.tag{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--radius-pill);background:var(--surface);border:1px solid var(--line);font-size:13px;color:var(--ink-600)}
.tag:hover{border-color:var(--accent-300);color:var(--brand-700);background:#FFF7F2}

.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:20px;box-shadow:var(--sh-1)}
.side-card+.side-card{margin-top:16px}
.side-title{font-size:15px;font-weight:800;color:var(--brand-900);margin-bottom:12px;letter-spacing:.01em}
.side-list a{display:block;padding:9px 10px 9px 13px;border-left:3px solid transparent;border-radius:0 10px 10px 0;font-size:14.5px;font-weight:500;color:var(--ink-600);transition:background-color .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease)}
.side-list a:hover{border-left-color:var(--accent-500);background:#FBFAF7;color:var(--brand-700)}
.side-note p{font-size:14px;color:var(--ink-600);line-height:1.8}

.related{padding:var(--space-section) 0 0}
.section-head h2{font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.3;color:var(--brand-900)}
.section-head p{margin-top:12px;color:var(--ink-600);max-width:680px;font-size:15.5px}
.card-grid{display:grid;grid-template-columns:1fr;gap:16px;margin-top:32px}
@media (min-width:768px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}}
@media (min-width:1024px){.card-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.post-card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--sh-1);transition:transform .22s var(--ease),box-shadow .22s var(--ease)}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);color:inherit}
.card-media{aspect-ratio:16/10;overflow:hidden;background:#E9E6DE}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.post-card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px}
.card-body h3{font-size:18px;font-weight:700;line-height:1.45;color:var(--ink-900);transition:color .2s var(--ease);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card:hover h3{color:var(--brand-700)}
.card-body p{font-size:14.5px;line-height:1.72;color:var(--ink-600);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

.post-nav{display:grid;grid-template-columns:1fr;gap:14px;margin-top:48px;padding-top:32px;border-top:1px solid var(--line)}
@media (min-width:640px){.post-nav{grid-template-columns:1fr 1fr}}
.post-nav-link{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:18px 22px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);font-size:15px;font-weight:600;color:var(--brand-900);transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease)}
.post-nav-link:hover{border-color:var(--accent-300);transform:translateY(-2px);box-shadow:var(--sh-1);color:var(--brand-700)}
.post-nav-link span{font-size:13px;font-weight:500;color:var(--ink-400)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:rgba(247,245,240,.86);margin-top:96px;padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px}}
@media (min-width:1024px){
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
  .footer-grid > * + *{padding-left:40px;border-left:1px solid rgba(255,255,255,.12)}
}
.brand-light{color:var(--paper)}
.brand-light:hover{color:#fff}
.brand-light .brand-mark{background:rgba(255,255,255,.14)}
.footer-brand p{margin-top:14px;font-size:14px;line-height:1.8;color:rgba(247,245,240,.72);max-width:320px}
.footer-col h3{font-size:15px;font-weight:700;color:var(--paper);margin-bottom:16px}
.footer-col li+li{margin-top:10px}
.footer-col a{font-size:14px;color:rgba(247,245,240,.78)}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-col p{font-size:14px;line-height:1.85;color:rgba(247,245,240,.72)}
.footer-col p+p{margin-top:8px}
.footer-bottom{margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;align-items:center;font-size:13px;color:rgba(247,245,240,.62)}
.footer-bottom a{color:rgba(247,245,240,.72)}
.footer-bottom a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}

@media (max-width:767px){
  :root{--space-section:56px}
  .related{padding-top:56px}
  .site-footer{margin-top:64px;padding-top:48px}
}

/* roulang page: category1 */
:root{
  --brand-900:#0B2E28;
  --brand-700:#10403B;
  --brand-500:#1E6B5C;
  --accent-500:#FF6B35;
  --accent-600:#E85A28;
  --accent-300:#FFB08A;
  --mint-300:#7FD1B9;
  --paper:#F7F5F0;
  --surface:#FFFFFF;
  --ink-900:#16191A;
  --ink-600:#4A5350;
  --ink-400:#8A9391;
  --line:#E3E1DA;
  --hoverbg:#FBFAF7;
  --r-card:16px;
  --r-img:14px;
  --r-input:12px;
  --r-block:24px;
  --sh-1:0 1px 2px rgba(22,25,26,.05), 0 8px 24px rgba(16,64,59,.06);
  --sh-2:0 12px 32px rgba(16,64,59,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-900);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
::selection{background:rgba(255,107,53,.22);color:var(--brand-900);}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#EFEDE7;}
::-webkit-scrollbar-thumb{background:#CFCCC3;border-radius:999px;border:2px solid #EFEDE7;}
::-webkit-scrollbar-thumb:hover{background:var(--brand-500);}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:32px;padding-right:32px;}
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.bg-paper{background:var(--paper);}
.bg-white-sec{background:var(--surface);}
.bg-deep{background:var(--brand-900);}

/* ---------- 浮动 Dock 导航 ---------- */
.dock-wrap{position:fixed;top:16px;left:0;right:0;z-index:80;display:flex;justify-content:center;padding:0 20px;pointer-events:none;}
.dock{
  pointer-events:auto;
  width:100%;max-width:1080px;height:64px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:0 18px 0 22px;
  border-radius:999px;
  background:rgba(247,245,240,.86);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
  transition:height .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.dock.is-scrolled{height:56px;background:rgba(247,245,240,.95);box-shadow:0 12px 32px rgba(16,64,59,.14);}
.dock-logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  position:relative;width:30px;height:30px;border-radius:999px;
  background:conic-gradient(from 210deg,var(--brand-700),var(--brand-500),var(--mint-300));
  flex:0 0 auto;
}
.logo-mark::after{content:"";position:absolute;inset:8px;border-radius:999px;background:var(--paper);}
.logo-mark::before{content:"";position:absolute;top:1px;right:1px;width:9px;height:9px;border-radius:999px;background:var(--accent-500);border:2px solid var(--paper);}
.logo-text{display:flex;flex-direction:column;line-height:1.12;font-weight:800;color:var(--brand-900);font-size:15px;letter-spacing:.01em;}
.logo-text .logo-sub{font-size:11px;font-weight:500;color:var(--ink-400);letter-spacing:.06em;}
.dock-nav{display:flex;align-items:center;gap:26px;}
.dock-link{position:relative;font-size:14px;color:var(--brand-700);padding:6px 0;white-space:nowrap;transition:color .2s var(--ease);}
.dock-link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent-500);border-radius:2px;transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease);}
.dock-link:hover{color:var(--brand-900);}
.dock-link:hover::after{transform:scaleX(1);}
.dock-link.active{color:var(--brand-900);font-weight:700;}
.dock-link.active::after{transform:scaleX(1);}
.dock-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.dock-search{
  width:38px;height:38px;border-radius:999px;border:1px solid var(--line);background:transparent;
  display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--brand-700);
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.dock-search:hover{background:rgba(16,64,59,.07);border-color:rgba(16,64,59,.24);}
.dock-burger{display:none;width:40px;height:40px;border-radius:999px;border:1px solid var(--line);background:transparent;cursor:pointer;align-items:center;justify-content:center;}
.dock-burger span{display:block;width:16px;height:1.6px;background:var(--brand-700);border-radius:2px;position:relative;}
.dock-burger span::before,.dock-burger span::after{content:"";position:absolute;left:0;width:16px;height:1.6px;background:var(--brand-700);border-radius:2px;}
.dock-burger span::before{top:-5px;}
.dock-burger span::after{top:5px;}

/* 移动抽屉 */
.drawer{position:fixed;inset:0;z-index:120;background:var(--brand-900);color:var(--paper);display:none;flex-direction:column;padding:24px 20px 28px;}
.drawer.is-open{display:flex;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-brand{font-weight:800;font-size:16px;color:var(--paper);}
.drawer-close{width:40px;height:40px;border-radius:999px;border:1px solid rgba(247,245,240,.3);background:transparent;color:var(--paper);cursor:pointer;font-size:18px;line-height:1;}
.drawer-nav{display:flex;flex-direction:column;margin-top:8px;}
.drawer-nav a{display:flex;align-items:center;height:56px;border-bottom:1px solid rgba(255,255,255,.12);color:rgba(247,245,240,.9);font-size:16px;}
.drawer-nav a.active{color:var(--accent-300);font-weight:700;}
.drawer-cta{margin-top:auto;padding-top:20px;}
.drawer-cta .btn{width:100%;justify-content:center;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;border:1.5px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:transform .22s var(--ease),background .22s var(--ease),color .22s var(--ease),box-shadow .22s var(--ease),opacity .22s var(--ease);
}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:0 8px 20px rgba(255,107,53,.24);}
.btn-primary:hover{background:var(--accent-600);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);filter:brightness(.96);}
.btn-ghost{border-color:var(--brand-700);color:var(--brand-700);background:transparent;}
.btn-ghost:hover{background:rgba(16,64,59,.08);}
.btn-ghost:active{background:rgba(16,64,59,.14);}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none;}
.textlink{display:inline-flex;align-items:center;gap:6px;color:var(--brand-700);font-weight:600;font-size:15px;}
.textlink .arrow{transition:transform .22s var(--ease);}
.textlink:hover .arrow{transform:translateX(4px);}
.textlink:hover{color:var(--brand-900);}

/* ---------- 排版 ---------- */
.hero-title{font-size:clamp(30px,4.4vw,48px);font-weight:800;line-height:1.22;letter-spacing:-.01em;}
.sec-title{font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.3;}
.card-title{font-size:20px;font-weight:600;line-height:1.45;}
.lead{font-size:17px;color:var(--ink-600);line-height:1.85;}
.body-text{font-size:16px;color:var(--ink-600);line-height:1.85;}
.muted{color:var(--ink-400);font-size:13px;letter-spacing:.02em;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--brand-700);
  background:rgba(127,209,185,.22);border:1px solid rgba(127,209,185,.5);
  padding:6px 14px;border-radius:999px;
}
.eyebrow-dot{width:6px;height:6px;border-radius:999px;background:var(--accent-500);display:inline-block;}

/* ---------- 通用卡片 ---------- */
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.card-hover:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(16,64,59,.16);}
.card-pad{padding:28px;}
.img-rounded{border-radius:var(--r-img);object-fit:cover;width:100%;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  background:rgba(127,209,185,.24);color:var(--brand-700);
  font-size:12px;font-weight:600;letter-spacing:.03em;
  padding:5px 12px;border-radius:999px;
}
.divider{height:1px;background:var(--line);border:0;}

/* ---------- Hero ---------- */
.hero{padding-top:150px;padding-bottom:80px;position:relative;overflow:hidden;}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(16,64,59,.16) 1px,transparent 1px);
  background-size:22px 22px;opacity:.5;pointer-events:none;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 72%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 72%);
}
.hero-inner{position:relative;z-index:1;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.trust-row{display:flex;flex-wrap:wrap;gap:22px;margin-top:32px;}
.trust-item{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-600);letter-spacing:.02em;}
.trust-item svg{flex:0 0 auto;}
.hero-media{position:relative;}
.hero-media img{aspect-ratio:16/12;border-radius:var(--r-block);box-shadow:var(--sh-1);}
.hero-float{
  position:absolute;right:18px;bottom:-18px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:14px 18px;box-shadow:var(--sh-1);display:flex;align-items:center;gap:10px;
  font-size:13px;font-weight:600;color:var(--brand-900);
}
.hero-float .pulse{width:8px;height:8px;border-radius:999px;background:var(--mint-300);box-shadow:0 0 0 4px rgba(127,209,185,.28);}

/* ---------- 步骤 ---------- */
.steps{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.step-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-1);transition:transform .22s var(--ease),box-shadow .22s var(--ease);}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.step-num{
  width:46px;height:46px;border-radius:999px;border:2px solid var(--accent-500);color:var(--accent-500);
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:16px;letter-spacing:.02em;
  margin-bottom:18px;
}
.step-title{font-size:18px;font-weight:600;margin-bottom:8px;}

/* ---------- 不对称内容区 ---------- */
.check-list{margin-top:22px;border-top:1px solid var(--line);}
.check-list li{display:flex;gap:14px;padding:18px 0;border-bottom:1px solid var(--line);}
.check-icon{flex:0 0 auto;width:34px;height:34px;border-radius:999px;border:1px solid rgba(30,107,92,.28);color:var(--brand-700);display:flex;align-items:center;justify-content:center;}
.check-list strong{display:block;font-size:16px;font-weight:600;color:var(--ink-900);margin-bottom:4px;}
.check-list span{font-size:15px;color:var(--ink-600);}
.tip-list li{display:flex;gap:12px;padding:14px 0;border-bottom:1px dashed var(--line);font-size:15px;color:var(--ink-600);}
.tip-list li:last-child{border-bottom:0;}
.tip-index{flex:0 0 auto;color:var(--accent-500);font-weight:800;font-size:13px;letter-spacing:.06em;padding-top:4px;}

/* ---------- 图文区块 ---------- */
.zigzag-text h3{font-size:20px;font-weight:600;margin-bottom:10px;}
.zigzag-text p{font-size:16px;color:var(--ink-600);}
.zigzag-media img{aspect-ratio:4/3;border-radius:var(--r-block);box-shadow:var(--sh-1);}
.zigzag-media{position:relative;}
.zigzag-media::after{
  content:"";position:absolute;left:-14px;bottom:-14px;width:120px;height:120px;border-radius:20px;
  background:rgba(127,209,185,.3);z-index:-1;
}

/* ---------- 数据横条 ---------- */
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line);border-radius:var(--r-card);background:var(--surface);overflow:hidden;}
.stat-item{padding:28px;border-right:1px solid var(--line);}
.stat-item:last-child{border-right:0;}
.stat-num{font-size:32px;font-weight:800;color:var(--brand-900);line-height:1.1;}
.stat-label{font-size:13px;color:var(--ink-400);letter-spacing:.02em;margin-top:6px;}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 0;cursor:pointer;list-style:none;font-size:16px;font-weight:600;color:var(--ink-900);
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand-700);}
.faq-icon{
  flex:0 0 auto;position:relative;width:30px;height:30px;border-radius:999px;
  border:1px solid var(--line);background:var(--surface);
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;top:50%;left:50%;background:var(--brand-700);border-radius:2px;transform:translate(-50%,-50%);}
.faq-icon::before{width:12px;height:1.6px;}
.faq-icon::after{width:1.6px;height:12px;transition:opacity .2s var(--ease);}
.faq-item[open] .faq-icon{background:var(--accent-500);border-color:var(--accent-500);}
.faq-item[open] .faq-icon::before,.faq-item[open] .faq-icon::after{background:#fff;}
.faq-item[open] .faq-icon::after{opacity:0;}
.faq-answer{padding:0 0 24px;font-size:15px;color:var(--ink-600);max-width:720px;animation:faqIn .2s var(--ease);}
@keyframes faqIn{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:translateY(0);}}

/* ---------- 深色 CTA ---------- */
.cta-block{
  background:var(--brand-900);color:var(--paper);border-radius:var(--r-block);
  padding:56px;position:relative;overflow:hidden;
}
.cta-block::before{
  content:"";position:absolute;right:-90px;top:-90px;width:320px;height:320px;border-radius:999px;
  border:1px solid rgba(127,209,185,.3);
}
.cta-block::after{
  content:"";position:absolute;right:-40px;bottom:-120px;width:220px;height:220px;border-radius:999px;
  border:1px solid rgba(247,245,240,.14);
}
.cta-inner{position:relative;z-index:1;}
.cta-title{font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.3;color:var(--paper);}
.cta-text{color:rgba(247,245,240,.76);font-size:16px;margin-top:12px;}
.cta-form{display:flex;gap:12px;align-items:center;}
.cta-form input{
  flex:1 1 auto;height:48px;padding:0 18px;border-radius:var(--r-input);
  border:1px solid rgba(247,245,240,.28);background:rgba(247,245,240,.96);color:var(--ink-900);
  font-size:15px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.cta-form input::placeholder{color:var(--ink-400);}
.cta-form input:focus{outline:none;border-color:var(--accent-500);box-shadow:0 0 0 3px rgba(255,107,53,.18);}
.cta-privacy{font-size:12px;color:rgba(247,245,240,.6);margin-top:14px;letter-spacing:.02em;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:var(--paper);padding:72px 0 32px;margin-top:88px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:0;}
.footer-col{padding:0 28px;}
.footer-col:first-child{padding-left:0;}
.footer-col:last-child{padding-right:0;}
.footer-col + .footer-col{border-left:1px solid rgba(255,255,255,.12);}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .logo-mark::after{background:var(--brand-900);}
.footer-brand .logo-mark::before{border-color:var(--brand-900);}
.footer-brand-text{font-weight:800;font-size:16px;color:var(--paper);}
.footer-desc{font-size:14px;color:rgba(247,245,240,.72);line-height:1.8;}
.footer-quote{
  margin-top:16px;padding:12px 16px;border-left:3px solid var(--accent-500);
  background:rgba(255,255,255,.06);border-radius:0 12px 12px 0;
  font-size:13px;color:rgba(247,245,240,.82);
}
.footer-title{font-size:14px;font-weight:700;color:var(--paper);margin-bottom:16px;letter-spacing:.02em;}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{font-size:14px;color:rgba(247,245,240,.72);transition:color .2s var(--ease);}
.footer-links a:hover{color:var(--paper);text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:rgba(247,245,240,.6);
}
.footer-bottom-links{display:flex;gap:20px;}
.footer-bottom-links a{color:rgba(247,245,240,.66);}
.footer-bottom-links a:hover{color:var(--paper);text-decoration:underline;text-underline-offset:3px;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding-left:28px;padding-right:28px;}
}
@media (max-width:1023px){
  .dock-nav{gap:18px;}
  .dock-link{font-size:13px;}
  .steps{grid-template-columns:1fr;gap:16px;}
  .footer-grid{grid-template-columns:1fr 1fr;row-gap:36px;}
  .footer-col{padding:0;}
  .footer-col + .footer-col{border-left:0;}
  .footer-col:nth-child(even){border-left:1px solid rgba(255,255,255,.12);padding-left:24px;}
  .footer-col:nth-child(odd){padding-right:24px;}
  .cta-block{padding:40px;}
}
@media (max-width:767px){
  .container{padding-left:20px;padding-right:20px;}
  .section{padding:56px 0;}
  .section-tight{padding:44px 0;}
  .dock-nav{display:none;}
  .dock-search{display:none;}
  .dock-burger{display:flex;}
  .dock{height:58px;padding:0 14px 0 16px;gap:12px;}
  .hero{padding-top:112px;padding-bottom:52px;}
  .hero-actions{gap:12px;}
  .hero-actions .btn{width:100%;}
  .trust-row{gap:14px;}
  .hero-float{right:12px;bottom:-14px;padding:12px 14px;font-size:12px;}
  .cta-form{flex-direction:column;align-items:stretch;}
  .cta-form .btn{width:100%;}
  .cta-block{padding:32px 22px;border-radius:20px;}
  .stat-row{grid-template-columns:1fr;}
  .stat-item{border-right:0;border-bottom:1px solid var(--line);padding:22px;}
  .stat-item:last-child{border-bottom:0;}
  .footer-grid{grid-template-columns:1fr;row-gap:32px;}
  .footer-col:nth-child(even){border-left:0;padding-left:0;}
  .footer-col:nth-child(odd){padding-right:0;}
  .footer-col{border-top:1px solid rgba(255,255,255,.12);padding-top:26px;}
  .footer-col:first-child{border-top:0;padding-top:0;}
  .site-footer{padding:56px 0 28px;margin-top:56px;}
  .footer-bottom{justify-content:flex-start;}
  .card-pad{padding:22px;}
}
@media (max-width:519px){
  .hero-title{font-size:28px;}
  .sec-title{font-size:23px;}
  .eyebrow{font-size:12px;padding:5px 12px;}
}
@media (hover:none){
  .card-hover:hover{transform:none;box-shadow:var(--sh-1);}
  .step-card:hover{transform:none;box-shadow:var(--sh-1);}
}

/* roulang page: category2 */
:root{
  --brand-900:#0B2E28;
  --brand-700:#10403B;
  --brand-500:#1E6B5C;
  --brand-100:#D6E7E2;
  --accent-500:#FF6B35;
  --accent-600:#E85A28;
  --accent-300:#FFB08A;
  --mint-300:#7FD1B9;
  --paper:#F7F5F0;
  --surface:#FFFFFF;
  --ink-900:#16191A;
  --ink-600:#4A5350;
  --ink-400:#8A9391;
  --line:#E3E1DA;
  --radius-card:16px;
  --radius-img:14px;
  --radius-block:24px;
  --shadow-1:0 1px 2px rgba(22,25,26,.05), 0 8px 24px rgba(16,64,59,.06);
  --shadow-2:0 12px 32px rgba(16,64,59,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-900);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand-700);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--accent-600)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;color:var(--brand-900);letter-spacing:-.01em}
p{margin:0 0 1.15em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0}
::selection{background:rgba(255,107,53,.22);color:var(--ink-900)}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:6px}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#EFEDE7}
::-webkit-scrollbar-thumb{background:#C9C6BC;border-radius:999px;border:2px solid #EFEDE7}
::-webkit-scrollbar-thumb:hover{background:var(--brand-500)}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.sec{padding:88px 0}
.sec-alt{background:var(--surface)}
.sec-tight{padding:64px 0}
.sec-title{font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.3;margin-bottom:16px}
.sec-sub{color:var(--ink-600);font-size:16px;max-width:640px}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.12em;
  color:var(--accent-500);margin-bottom:14px;
}

/* ---------- Dock 导航 ---------- */
.dock-header{
  position:fixed;top:16px;left:50%;transform:translateX(-50%);
  width:calc(100% - 40px);max-width:1080px;height:64px;
  display:flex;align-items:center;gap:18px;
  padding:0 12px 0 18px;
  border-radius:999px;border:1px solid var(--line);
  background:rgba(247,245,240,.86);
  -webkit-backdrop-filter:blur(14px) saturate(1.2);
  backdrop-filter:blur(14px) saturate(1.2);
  box-shadow:var(--shadow-1);
  z-index:60;
  transition:height .2s var(--ease), background .2s var(--ease), box-shadow .2s var(--ease);
}
.dock-header.is-scrolled{height:56px;background:rgba(247,245,240,.95);box-shadow:0 10px 28px rgba(16,64,59,.12)}
.dock-brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;white-space:nowrap}
.dock-logo{
  width:34px;height:34px;border-radius:12px;flex:0 0 34px;
  background:var(--brand-900);display:flex;align-items:center;justify-content:center;
}
.dock-logo svg{width:20px;height:20px}
.dock-brand-text{font-size:15px;font-weight:800;color:var(--brand-900);letter-spacing:-.01em}
.dock-nav{display:flex;align-items:center;justify-content:center;gap:26px;flex:1 1 auto}
.dock-link{
  position:relative;font-size:14px;color:var(--brand-700);font-weight:600;
  white-space:nowrap;padding:6px 2px;
}
.dock-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--accent-500);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.dock-link:hover{color:var(--brand-900)}
.dock-link:hover::after{transform:scaleX(1)}
.dock-link.active{color:var(--brand-900)}
.dock-link.active::after{transform:scaleX(1)}
.dock-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.dock-search{
  width:38px;height:38px;border-radius:999px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--brand-700);
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.dock-search:hover{background:rgba(16,64,59,.08);border-color:var(--brand-100)}
.dock-search svg{width:17px;height:17px}
.dock-burger{display:none;width:40px;height:40px;border-radius:999px;border:1px solid var(--line);align-items:center;justify-content:center;flex-direction:column;gap:4px}
.dock-burger span{display:block;width:16px;height:2px;border-radius:2px;background:var(--brand-700);transition:transform .2s var(--ease)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;font-size:15px;font-weight:600;
  padding:12px 26px;border:1.5px solid transparent;cursor:pointer;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:0 6px 18px rgba(255,107,53,.24)}
.btn-primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0);filter:brightness(.96)}
.btn-ghost{background:transparent;color:var(--brand-700);border-color:var(--brand-700)}
.btn-ghost:hover{background:rgba(16,64,59,.08);color:var(--brand-900)}
.btn-onDark{background:transparent;color:var(--paper);border-color:rgba(247,245,240,.55)}
.btn-onDark:hover{background:rgba(247,245,240,.12);color:#fff}
.btn-sm{padding:9px 18px;font-size:14px}
.btn[aria-disabled="true"],.btn:disabled{opacity:.4;pointer-events:none}
.text-link{
  display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--brand-700);
}
.text-link svg{width:16px;height:16px;transition:transform .22s var(--ease)}
.text-link:hover svg{transform:translateX(4px)}

/* ---------- 标签 / 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;border-radius:999px;
  padding:4px 12px;font-size:13px;font-weight:600;
  background:rgba(127,209,185,.22);color:var(--brand-700);
}
.badge-accent{background:rgba(255,107,53,.12);color:var(--accent-600)}

/* ---------- Hero ---------- */
.hero{position:relative;padding:150px 0 76px;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(16,64,59,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(16,64,59,.05) 1px,transparent 1px);
  background-size:52px 52px;
  -webkit-mask-image:radial-gradient(120% 90% at 80% 0%,#000 0%,transparent 72%);
  mask-image:radial-gradient(120% 90% at 80% 0%,#000 0%,transparent 72%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:1;max-width:840px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;font-size:13px;color:var(--ink-400);margin-bottom:20px}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--line)}
.breadcrumb a{color:var(--ink-400)}
.breadcrumb a:hover{color:var(--brand-700)}
.hero-title{font-size:clamp(30px,4.4vw,48px);font-weight:800;line-height:1.22;margin-bottom:18px}
.hero-title em{font-style:normal;color:var(--accent-500)}
.hero-lead{font-size:18px;color:var(--ink-600);max-width:620px;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.trust-row{display:flex;flex-wrap:wrap;gap:12px 30px;list-style:none}
.trust-row li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-600)}
.trust-row svg{width:16px;height:16px;color:var(--mint-300);flex:0 0 16px}

/* ---------- 步骤流程条 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:56px}
.step{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 22px;box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--brand-100)}
.step-num{
  width:44px;height:44px;border-radius:999px;border:2px solid var(--accent-500);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:800;color:var(--accent-500);margin-bottom:16px;
}
.step h3{font-size:18px;font-weight:600;margin-bottom:8px}
.step p{font-size:15px;line-height:1.75;color:var(--ink-600);margin:0}

/* ---------- Zigzag 图文 ---------- */
.zig{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.zig + .zig{margin-top:88px}
.zig-media{position:relative}
.zig-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-block);
  box-shadow:var(--shadow-1);
}
.zig-media::before{
  content:"";position:absolute;left:-16px;bottom:-16px;width:56%;height:52%;
  border-radius:var(--radius-block);background:rgba(127,209,185,.28);z-index:-1;
}
.zig-rev .zig-media{order:-1}
.zig-text h2{font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.3;margin-bottom:16px}
.zig-text p{color:var(--ink-600)}
.mini-list{list-style:none;margin-top:26px;border-top:1px solid var(--line)}
.mini-list li{
  display:flex;gap:14px;padding:15px 0;border-bottom:1px solid var(--line);
  font-size:16px;color:var(--ink-600);
}
.mini-list li:last-child{border-bottom:0}
.mini-list b{color:var(--brand-900);font-weight:600;flex:0 0 auto}
.mini-list span{color:var(--ink-600)}
.mini-index{
  flex:0 0 26px;width:26px;height:26px;border-radius:999px;background:rgba(127,209,185,.24);
  color:var(--brand-700);font-size:13px;font-weight:700;
  display:flex;align-items:center;justify-content:center;margin-top:5px;
}

/* ---------- 操作细节横排 ---------- */
.detail-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:44px}
.detail{
  padding:24px 22px;border-radius:var(--radius-card);border:1px solid var(--line);
  background:var(--surface);box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.detail:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.detail svg{width:22px;height:22px;color:var(--accent-500);margin-bottom:14px}
.detail h3{font-size:17px;font-weight:600;margin-bottom:8px}
.detail p{font-size:15px;line-height:1.75;color:var(--ink-600);margin:0}

/* ---------- 数据横条 ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-block);overflow:hidden;box-shadow:var(--shadow-1);
}
.stat{padding:30px 26px;border-left:1px solid var(--line)}
.stat:first-child{border-left:0}
.stat strong{display:block;font-size:32px;font-weight:800;color:var(--brand-900);line-height:1.2}
.stat span{display:block;margin-top:8px;font-size:14px;color:var(--ink-600);letter-spacing:.02em}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;justify-content:space-between;
  align-items:flex-start;gap:16px;padding:20px 0;
  font-size:16px;font-weight:600;color:var(--brand-900);
  transition:color .2s var(--ease);
}
.faq-item summary:hover{color:var(--accent-600)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{position:relative;width:18px;height:18px;flex:0 0 18px;margin-top:5px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--accent-500);border-radius:2px;
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item[open] .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-a{
  padding:0 0 22px;max-width:720px;font-size:15px;line-height:1.85;color:var(--ink-600);
  animation:faqIn .2s var(--ease);
}
@keyframes faqIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* ---------- 深色 CTA ---------- */
.cta-block{
  position:relative;overflow:hidden;border-radius:var(--radius-block);
  background:var(--brand-900);color:var(--paper);padding:58px 56px;
}
.cta-block::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;opacity:.14;
}
.cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.cta-block h2{color:#fff;font-size:clamp(23px,2.6vw,30px);font-weight:700;line-height:1.32;margin-bottom:14px}
.cta-block p{color:rgba(247,245,240,.78);font-size:16px;margin:0}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cta-note{margin-top:18px;font-size:13px;color:rgba(247,245,240,.6);letter-spacing:.02em}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:var(--paper);padding:72px 0 28px;margin-top:88px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px}
.footer-col + .footer-col{border-left:1px solid rgba(255,255,255,.12);padding-left:32px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .dock-logo{background:rgba(247,245,240,.12)}
.footer-brand span{font-size:16px;font-weight:800;color:var(--paper)}
.footer-desc{font-size:14px;color:rgba(247,245,240,.7);margin:0}
.footer-title{font-size:14px;font-weight:700;letter-spacing:.06em;color:var(--mint-300);margin-bottom:14px}
.footer-list{list-style:none}
.footer-list li+li{margin-top:10px}
.footer-list a{font-size:15px;color:rgba(247,245,240,.82)}
.footer-list a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-text{font-size:14px;color:rgba(247,245,240,.7)}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;align-items:center;
  font-size:13px;color:rgba(247,245,240,.6);letter-spacing:.02em;
}
.footer-bottom a{color:rgba(247,245,240,.72)}
.footer-bottom a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-links{display:flex;gap:20px}

/* ---------- 移动端抽屉 ---------- */
.drawer{
  position:fixed;inset:0;z-index:80;display:flex;flex-direction:column;
  padding:84px 20px 28px;background:var(--brand-900);color:var(--paper);
  opacity:0;visibility:hidden;transition:opacity .22s var(--ease),visibility .22s var(--ease);
}
.drawer.is-open{opacity:1;visibility:visible}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer-brand{font-size:17px;font-weight:800;color:var(--paper)}
.drawer-close{
  width:40px;height:40px;border-radius:999px;border:1px solid rgba(247,245,240,.3);
  color:var(--paper);font-size:20px;line-height:1;display:flex;align-items:center;justify-content:center;
}
.drawer-close:hover{background:rgba(247,245,240,.12)}
.drawer-nav{display:flex;flex-direction:column}
.drawer-link{
  display:flex;align-items:center;height:56px;font-size:17px;color:rgba(247,245,240,.88);
  border-bottom:1px solid rgba(255,255,255,.12);
}
.drawer-link.active{color:#fff;font-weight:700}
.drawer-link:hover{color:#fff}
.drawer-cta{margin-top:auto;width:100%}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .container{padding:0 24px}
  .sec{padding:72px 0}
  .dock-nav{gap:20px}
  .dock-nav .dock-link:first-child{display:none}
  .steps{grid-template-columns:repeat(2,1fr)}
  .detail-grid{grid-template-columns:repeat(2,1fr)}
  .zig{gap:40px}
  .zig + .zig{margin-top:72px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .sec{padding:56px 0}
  .dock-nav{display:none}
  .dock-actions .btn{display:none}
  .dock-burger{display:flex}
  .hero{padding:118px 0 56px}
  .hero-lead{font-size:17px}
  .steps,.detail-grid{grid-template-columns:1fr}
  .zig{grid-template-columns:1fr;gap:28px}
  .zig-rev .zig-media{order:0}
  .zig-media::before{display:none}
  .stat-strip{grid-template-columns:1fr 1fr}
  .stat{padding:24px 20px}
  .stat:nth-child(odd){border-left:0}
  .stat:nth-child(n+3){border-top:1px solid var(--line)}
  .faq-wrap{grid-template-columns:1fr;gap:24px}
  .cta-block{padding:36px 24px}
  .cta-inner{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-col + .footer-col{border-left:0;padding-left:0;border-top:1px solid rgba(255,255,255,.12);padding-top:24px}
  .site-footer{padding:56px 0 24px;margin-top:56px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .dock-header{width:calc(100% - 24px);padding:0 10px 0 14px}
  .dock-brand-text{font-size:14px}
  .hero-actions .btn{width:100%}
  .cta-actions .btn{width:100%}
}

/* roulang page: category3 */
:root{
    --brand-900:#0B2E28;
    --brand-700:#10403B;
    --brand-500:#1E6B5C;
    --accent-500:#FF6B35;
    --accent-hover:#E85A28;
    --accent-300:#FFB08A;
    --mint-300:#7FD1B9;
    --paper:#F7F5F0;
    --surface:#FFFFFF;
    --ink-900:#16191A;
    --ink-600:#4A5350;
    --ink-400:#8A9391;
    --line:#E3E1DA;
    --radius-card:16px;
    --radius-img:14px;
    --radius-input:12px;
    --radius-block:24px;
    --shadow-sm:0 1px 2px rgba(22,25,26,.05), 0 8px 24px rgba(16,64,59,.06);
    --shadow-lg:0 12px 32px rgba(16,64,59,.12);
    --ease:cubic-bezier(.2,.7,.3,1);
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink-900);
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button,input{font:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  p{margin:0 0 1.15em;}
  ::selection{background:rgba(255,107,53,.22);}
  ::-webkit-scrollbar{width:10px;height:10px;}
  ::-webkit-scrollbar-track{background:#EFEDE7;}
  ::-webkit-scrollbar-thumb{background:#C7C3B8;border-radius:999px;}
  ::-webkit-scrollbar-thumb:hover{background:var(--brand-500);}

  :focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:6px;}

  .wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
  @media (min-width:768px){ .wrap{padding:0 32px;} }

  .section{padding:88px 0;}
  @media (max-width:767px){ .section{padding:56px 0;} }
  .section-white{background:var(--surface);}
  .section-head{max-width:720px;margin-bottom:40px;}
  .section-head h2{
    font-size:clamp(24px,3vw,34px);
    font-weight:700;
    line-height:1.3;
    margin:0 0 14px;
    color:var(--brand-700);
  }
  .section-head p{font-size:16px;color:var(--ink-600);margin:0;}

  .badge{
    display:inline-flex;align-items:center;gap:6px;
    font-size:13px;letter-spacing:.02em;
    background:rgba(127,209,185,.22);
    color:var(--brand-700);
    border-radius:999px;
    padding:4px 12px;
  }

  /* ---------- 浮动 Dock 导航 ---------- */
  .dock{
    position:fixed;top:16px;left:50%;transform:translateX(-50%);
    z-index:60;width:calc(100% - 32px);max-width:1080px;
  }
  .dock-inner{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    height:64px;padding:0 12px 0 16px;
    border-radius:999px;
    background:rgba(247,245,240,.86);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
    border:1px solid var(--line);
    box-shadow:var(--shadow-sm);
    transition:height .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
  }
  .dock.is-scrolled .dock-inner{
    height:56px;
    background:rgba(247,245,240,.95);
    box-shadow:0 10px 30px rgba(16,64,59,.14);
  }
  .dock-brand{
    display:flex;align-items:center;gap:10px;
    font-size:15px;font-weight:800;color:var(--brand-700);
    white-space:nowrap;letter-spacing:.01em;
  }
  .dock-mark{
    position:relative;width:28px;height:28px;flex:0 0 auto;
    border-radius:9px;background:var(--brand-900);overflow:hidden;
  }
  .dock-mark::before{
    content:"";position:absolute;left:-8px;right:-8px;bottom:-14px;height:26px;
    border-radius:50%;border:2px solid var(--mint-300);
  }
  .dock-mark::after{
    content:"";position:absolute;right:4px;top:4px;width:7px;height:7px;
    border-radius:50%;background:var(--accent-500);
  }
  .dock-nav{display:flex;align-items:center;gap:28px;}
  .dock-link{
    position:relative;font-size:14px;color:var(--brand-700);
    white-space:nowrap;padding:6px 0;
    transition:color .2s var(--ease);
  }
  .dock-link::after{
    content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
    background:var(--accent-500);
    transform:scaleX(0);transform-origin:left;
    transition:transform .22s var(--ease);
  }
  .dock-link:hover::after,.dock-link.active::after{transform:scaleX(1);}
  .dock-link.active{font-weight:700;}
  .dock-actions{display:flex;align-items:center;gap:8px;}
  .dock-icon{
    width:40px;height:40px;border-radius:999px;border:1px solid transparent;
    background:transparent;color:var(--brand-700);
    display:inline-flex;align-items:center;justify-content:center;
    cursor:pointer;transition:background .2s var(--ease),border-color .2s var(--ease);
  }
  .dock-icon:hover{background:rgba(16,64,59,.08);border-color:var(--line);}
  .dock-cta{
    display:inline-flex;align-items:center;justify-content:center;
    height:40px;padding:0 20px;border-radius:999px;
    background:var(--accent-500);color:#fff;font-size:14px;font-weight:600;
    transition:background .2s var(--ease),transform .2s var(--ease);
  }
  .dock-cta:hover{background:var(--accent-hover);transform:translateY(-1px);}
  .dock-burger{
    display:none;width:40px;height:40px;border-radius:999px;
    border:1px solid var(--line);background:transparent;color:var(--brand-700);
    align-items:center;justify-content:center;cursor:pointer;
  }
  @media (max-width:767px){
    .dock-nav,.dock-cta,.dock-icon{display:none;}
    .dock-burger{display:inline-flex;}
    .dock-brand{font-size:14px;}
  }

  /* ---------- 移动端抽屉 ---------- */
  .drawer{
    position:fixed;inset:0;z-index:80;
    background:var(--brand-900);color:var(--paper);
    display:flex;flex-direction:column;
    padding:22px 20px 28px;
    transform:translateY(-100%);
    visibility:hidden;
    transition:transform .3s var(--ease),visibility .3s var(--ease);
  }
  .drawer.open{transform:translateY(0);visibility:visible;}
  .drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
  .drawer-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:15px;color:#fff;}
  .drawer-close{
    width:40px;height:40px;border-radius:999px;border:1px solid rgba(247,245,240,.28);
    background:transparent;color:var(--paper);cursor:pointer;
    display:inline-flex;align-items:center;justify-content:center;
  }
  .drawer-nav{display:flex;flex-direction:column;margin-top:8px;}
  .drawer-nav a{
    display:flex;align-items:center;height:56px;
    font-size:17px;color:var(--paper);
    border-bottom:1px solid rgba(247,245,240,.12);
  }
  .drawer-nav a.active{color:var(--mint-300);font-weight:700;}
  .drawer-cta{margin-top:auto;width:100%;}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 26px;border-radius:999px;
    font-size:15px;font-weight:600;border:1.5px solid transparent;
    cursor:pointer;transition:background .22s var(--ease),transform .22s var(--ease),filter .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
  }
  .btn-primary{background:var(--accent-500);color:#fff;}
  .btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px);}
  .btn-primary:active{transform:translateY(0);filter:brightness(.95);}
  .btn-ghost{border-color:var(--brand-700);color:var(--brand-700);background:transparent;}
  .btn-ghost:hover{background:rgba(16,64,59,.08);}
  .btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;}
  .link-arrow{
    display:inline-flex;align-items:center;gap:6px;
    color:var(--brand-700);font-weight:600;font-size:15px;
  }
  .link-arrow .arw{transition:transform .22s var(--ease);}
  .link-arrow:hover .arw{transform:translateX(4px);}

  /* ---------- 深色 Hero ---------- */
  .hero-dark{
    position:relative;overflow:hidden;
    background:var(--brand-900);color:var(--paper);
    padding:132px 0 76px;
  }
  .hero-dark::before{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:radial-gradient(rgba(127,209,185,.55) 1px,transparent 1px);
    background-size:24px 24px;opacity:.06;
  }
  .hero-dark::after{
    content:"";position:absolute;right:-180px;top:-200px;
    width:520px;height:520px;border-radius:50%;
    border:1px solid rgba(127,209,185,.22);pointer-events:none;
  }
  .hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;letter-spacing:.02em;color:var(--mint-300);
    border:1px solid rgba(127,209,185,.42);border-radius:999px;
    padding:6px 14px;
  }
  .eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent-500);}
  .hero-dark h1{
    font-size:clamp(30px,4.4vw,48px);font-weight:800;line-height:1.22;
    margin:22px 0 18px;color:#fff;letter-spacing:-.01em;
  }
  .hero-lead{font-size:17px;line-height:1.85;color:rgba(247,245,240,.82);max-width:640px;}
  .hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
  .hero-dark .btn-ghost{border-color:rgba(247,245,240,.5);color:var(--paper);}
  .hero-dark .btn-ghost:hover{background:rgba(247,245,240,.12);}
  .hero-metrics{
    display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
    margin-top:46px;padding-top:26px;
    border-top:1px solid rgba(247,245,240,.14);max-width:720px;
  }
  .hero-metrics li strong{
    display:block;font-size:24px;font-weight:800;color:var(--mint-300);line-height:1.3;
  }
  .hero-metrics li span{font-size:14px;color:rgba(247,245,240,.72);}
  .hero-visual{position:relative;}
  .hero-visual img{
    width:100%;aspect-ratio:4/5;object-fit:cover;
    border-radius:var(--radius-block);
    border:1px solid rgba(247,245,240,.16);
  }
  .float-card{
    position:absolute;right:-8px;bottom:-16px;
    background:#fff;color:var(--brand-700);
    font-size:13px;font-weight:600;
    padding:12px 18px;border-radius:16px;
    box-shadow:var(--shadow-lg);
    white-space:nowrap;
  }
  @media (max-width:1023px){
    .hero-grid{grid-template-columns:1fr;gap:36px;}
    .hero-visual{max-width:460px;}
    .float-card{right:8px;}
  }
  @media (max-width:767px){
    .hero-dark{padding:112px 0 60px;}
    .hero-metrics{grid-template-columns:1fr;gap:16px;}
    .hero-metrics li{display:flex;align-items:baseline;gap:10px;}
    .hero-metrics li strong{font-size:20px;}
    .hero-btns .btn{width:100%;}
  }

  /* ---------- 图标小卡网格 2×3 ---------- */
  .icon-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
  .icon-card{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:28px 24px;
    transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
  }
  .icon-card:hover{
    transform:translateY(-4px);
    box-shadow:var(--shadow-lg);
    border-color:rgba(30,107,92,.28);
  }
  .icon-badge{
    width:46px;height:46px;border-radius:14px;
    border:1px solid var(--line);
    display:flex;align-items:center;justify-content:center;
    color:var(--brand-700);margin-bottom:18px;
    transition:border-color .22s var(--ease),color .22s var(--ease);
  }
  .icon-card:hover .icon-badge{border-color:var(--accent-500);color:var(--accent-500);}
  .icon-card h3{font-size:20px;font-weight:600;margin:0 0 10px;color:var(--ink-900);}
  .icon-card p{font-size:15px;color:var(--ink-600);margin:0;}
  @media (max-width:1023px){ .icon-grid{grid-template-columns:repeat(2,1fr);} }
  @media (max-width:639px){ .icon-grid{grid-template-columns:1fr;gap:16px;} }

  /* ---------- 时间线 ---------- */
  .split-tl{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
  .timeline{position:relative;padding-left:28px;}
  .timeline::before{
    content:"";position:absolute;left:7px;top:8px;bottom:8px;width:1px;background:var(--line);
  }
  .tl-item{position:relative;padding-bottom:30px;}
  .tl-item:last-child{padding-bottom:0;}
  .tl-item::before{
    content:"";position:absolute;left:-28px;top:8px;width:15px;height:15px;border-radius:50%;
    background:var(--accent-500);border:3px solid var(--paper);
    box-shadow:0 0 0 1px var(--line);
  }
  .tl-item h3{font-size:18px;font-weight:600;margin:0 0 6px;color:var(--ink-900);}
  .tl-item p{font-size:15px;color:var(--ink-600);margin:0;}
  .tl-step{font-size:13px;letter-spacing:.02em;color:var(--ink-400);}
  @media (max-width:1023px){ .split-tl{grid-template-columns:1fr;gap:32px;} }

  /* ---------- 图文清单 ---------- */
  .split-media{display:grid;grid-template-columns:5fr 6fr;gap:48px;align-items:center;}
  .media-frame{position:relative;}
  .media-frame img{
    width:100%;aspect-ratio:16/11;object-fit:cover;
    border-radius:var(--radius-block);
    box-shadow:var(--shadow-sm);
  }
  .media-frame::after{
    content:"";position:absolute;left:-18px;bottom:-18px;width:120px;height:120px;
    background:rgba(127,209,185,.28);border-radius:18px;z-index:-1;
  }
  .check-list li{
    display:flex;gap:14px;
    padding:18px 0;border-bottom:1px solid var(--line);
    font-size:16px;color:var(--ink-600);
  }
  .check-list li:first-child{padding-top:0;}
  .check-list li strong{display:block;color:var(--ink-900);font-weight:600;font-size:17px;margin-bottom:2px;}
  .check-dot{
    flex:0 0 auto;width:10px;height:10px;border-radius:50%;
    background:var(--mint-300);margin-top:11px;
  }
  @media (max-width:1023px){ .split-media{grid-template-columns:1fr;gap:32px;} }

  /* ---------- FAQ ---------- */
  .split-faq{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-item summary{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:20px 0;font-size:16px;font-weight:600;cursor:pointer;list-style:none;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-icon{position:relative;width:20px;height:20px;flex:0 0 auto;color:var(--accent-500);}
  .faq-icon::before,.faq-icon::after{
    content:"";position:absolute;background:currentColor;border-radius:2px;
    transition:transform .2s var(--ease);
  }
  .faq-icon::before{left:0;right:0;top:9px;height:2px;}
  .faq-icon::after{top:0;bottom:0;left:9px;width:2px;}
  .faq-item[open] .faq-icon::after{transform:scaleY(0);}
  .faq-body{
    font-size:15px;line-height:1.85;color:var(--ink-600);
    padding:0 0 22px;max-width:760px;
  }
  .faq-item[open] .faq-body{animation:faqIn .2s var(--ease);}
  @keyframes faqIn{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:none;}}
  @media (max-width:1023px){ .split-faq{grid-template-columns:1fr;gap:24px;} }

  /* ---------- 深色 CTA ---------- */
  .cta-band{
    position:relative;overflow:hidden;
    background:var(--brand-900);color:var(--paper);
    border-radius:var(--radius-block);
    padding:52px 48px;
    display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;
  }
  .cta-band::before{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:radial-gradient(rgba(127,209,185,.5) 1px,transparent 1px);
    background-size:26px 26px;opacity:.05;
  }
  .cta-copy{position:relative;z-index:1;}
  .cta-copy h2{font-size:clamp(24px,3vw,32px);font-weight:700;line-height:1.3;margin:0 0 12px;color:#fff;}
  .cta-copy p{margin:0;font-size:16px;color:rgba(247,245,240,.78);}
  .cta-form-wrap{position:relative;z-index:1;}
  .cta-form{display:flex;gap:12px;}
  .cta-input{
    flex:1;height:48px;border-radius:var(--radius-input);
    border:1px solid rgba(247,245,240,.24);
    background:rgba(255,255,255,.08);
    color:#fff;padding:0 16px;outline:none;
    transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .cta-input::placeholder{color:rgba(247,245,240,.5);}
  .cta-input:focus{border-color:var(--accent-500);box-shadow:0 0 0 3px rgba(255,107,53,.18);}
  .cta-note{font-size:12px;color:rgba(247,245,240,.6);margin:14px 0 0;}
  .form-tip{font-size:13px;color:var(--mint-300);margin:10px 0 0;min-height:20px;}
  @media (max-width:1023px){ .cta-band{grid-template-columns:1fr;padding:40px 28px;gap:28px;} }
  @media (max-width:639px){ .cta-form{flex-direction:column;} .cta-form .btn{width:100%;} }

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--brand-900);color:var(--paper);padding:64px 0 26px;margin-top:88px;}
  @media (max-width:767px){ .site-footer{padding:56px 0 24px;margin-top:56px;} }
  .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;}
  .footer-col h4{font-size:15px;font-weight:700;margin:0 0 16px;color:#fff;}
  .footer-col p{font-size:14px;color:rgba(247,245,240,.72);margin:0 0 10px;}
  .footer-col li{margin-bottom:10px;}
  .footer-col li a{font-size:14px;color:rgba(247,245,240,.72);transition:color .2s var(--ease);}
  .footer-col li a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
  .footer-col + .footer-col{border-left:1px solid rgba(255,255,255,.12);padding-left:28px;}
  .footer-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:16px;color:#fff;margin-bottom:14px;}
  .footer-note{font-size:12px;color:rgba(247,245,240,.5);margin-top:12px;}
  .footer-bottom{
    margin-top:44px;padding-top:22px;
    border-top:1px solid rgba(255,255,255,.12);
    display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  }
  .footer-bottom p{font-size:13px;color:rgba(247,245,240,.6);margin:0;}
  .footer-bottom-links{display:flex;gap:20px;}
  .footer-bottom-links a{font-size:13px;color:rgba(247,245,240,.72);}
  .footer-bottom-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
  @media (max-width:1023px){
    .footer-grid{grid-template-columns:1fr 1fr;}
    .footer-col + .footer-col{border-left:none;padding-left:0;}
    .footer-col{border-top:1px solid rgba(255,255,255,.12);padding-top:22px;}
    .footer-col:first-child{border-top:none;padding-top:0;}
  }
  @media (max-width:639px){
    .footer-grid{grid-template-columns:1fr;}
  }

/* roulang page: category4 */
:root{
    --brand-900:#0B2E28;
    --brand-700:#10403B;
    --brand-500:#1E6B5C;
    --accent-500:#FF6B35;
    --accent-600:#E85A28;
    --accent-300:#FFB08A;
    --mint-300:#7FD1B9;
    --paper:#F7F5F0;
    --paper-soft:#FBFAF7;
    --surface:#FFFFFF;
    --ink-900:#16191A;
    --ink-600:#4A5350;
    --ink-400:#8A9391;
    --line:#E3E1DA;
    --r-card:16px;
    --r-img:14px;
    --r-input:12px;
    --r-block:24px;
    --sh-1:0 1px 2px rgba(22,25,26,.05), 0 8px 24px rgba(16,64,59,.06);
    --sh-2:0 12px 32px rgba(16,64,59,.12);
    --ease:cubic-bezier(.2,.7,.3,1);
    --sect-desktop:88px;
    --sect-mobile:56px;
  }

  *,*::before,*::after{ box-sizing:border-box; }

  html{ scroll-behavior:smooth; -webkit-text-size-adjust:100%; }

  html body{
    margin:0;
    background:var(--paper);
    color:var(--ink-900);
    font-family:'PingFang SC','Microsoft YaHei','Noto Sans SC',system-ui,-apple-system,'Segoe UI',sans-serif;
    font-size:16.5px;
    line-height:1.85;
    letter-spacing:.005em;
    -webkit-font-smoothing:antialiased;
  }

  img{ max-width:100%; display:block; }
  a{ color:inherit; text-decoration:none; }
  button{ font:inherit; color:inherit; background:none; border:none; padding:0; cursor:pointer; }
  ul,ol{ margin:0; padding:0; }

  ::selection{ background:rgba(255,107,53,.22); color:var(--brand-900); }

  :focus-visible{
    outline:2px solid var(--accent-500);
    outline-offset:2px;
    border-radius:6px;
  }

  ::-webkit-scrollbar{ width:10px; height:10px; }
  ::-webkit-scrollbar-track{ background:var(--paper); }
  ::-webkit-scrollbar-thumb{ background:#CFD6D1; border-radius:999px; border:2px solid var(--paper); }
  ::-webkit-scrollbar-thumb:hover{ background:#B4BDB7; }

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

  h1,h2,h3,h4{ margin:0; color:var(--ink-900); font-weight:700; }
  h1{ font-size:clamp(30px,4.4vw,48px); font-weight:800; line-height:1.22; letter-spacing:-.01em; }
  h2{ font-size:clamp(24px,3vw,34px); line-height:1.3; }
  h3{ font-size:20px; line-height:1.45; }
  p{ margin:0; }

  /* ---------- Dock 导航 ---------- */
  .site-dock{
    position:fixed;
    top:16px;
    left:50%;
    transform:translateX(-50%);
    width:calc(100% - 40px);
    max-width:1080px;
    z-index:80;
  }
  .dock-inner{
    display:flex;
    align-items:center;
    gap:16px;
    height:64px;
    padding:0 12px 0 16px;
    background:rgba(247,245,240,.86);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
    border:1px solid var(--line);
    border-radius:999px;
    box-shadow:var(--sh-1);
    transition:height .2s var(--ease), background .2s var(--ease), box-shadow .2s var(--ease);
  }
  .site-dock.scrolled .dock-inner{
    height:56px;
    background:rgba(247,245,240,.95);
    box-shadow:0 10px 30px rgba(16,64,59,.13);
  }
  .dock-brand{
    display:inline-flex;
    align-items:center;
    gap:10px;
    flex:0 0 auto;
    padding:4px 6px;
    border-radius:999px;
  }
  .brand-mark{
    width:34px;
    height:34px;
    border-radius:11px;
    background:var(--brand-900);
    display:inline-flex;
    align-items:center;
    justify-content:center;
    flex:0 0 auto;
  }
  .brand-mark svg{ width:20px; height:20px; display:block; }
  .brand-text{
    font-size:15px;
    font-weight:800;
    letter-spacing:.01em;
    color:var(--brand-900);
    white-space:nowrap;
  }
  .brand-text em{
    font-style:normal;
    font-weight:600;
    font-size:12.5px;
    color:var(--brand-500);
    margin-left:4px;
    letter-spacing:.02em;
  }

  .dock-nav{
    display:flex;
    align-items:center;
    gap:28px;
    margin:0 auto;
    flex:0 1 auto;
  }
  .dock-link{
    position:relative;
    font-size:14px;
    line-height:1;
    white-space:nowrap;
    color:var(--brand-700);
    padding:6px 2px;
    transition:color .2s var(--ease);
  }
  .dock-link::after{
    content:"";
    position:absolute;
    left:0; right:0; bottom:-2px;
    height:2px;
    border-radius:2px;
    background:var(--accent-500);
    transform:scaleX(0);
    transform-origin:left center;
    transition:transform .22s var(--ease);
  }
  .dock-link:hover{ color:var(--brand-900); }
  .dock-link:hover::after,
  .dock-link.active::after{ transform:scaleX(1); }
  .dock-link.active{ color:var(--brand-900); font-weight:600; }

  .dock-actions{
    display:flex;
    align-items:center;
    gap:10px;
    flex:0 0 auto;
  }
  .dock-search{
    width:36px; height:36px;
    border-radius:999px;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    color:var(--brand-700);
    transition:background .2s var(--ease), color .2s var(--ease);
  }
  .dock-search:hover{ background:rgba(16,64,59,.08); color:var(--brand-900); }
  .dock-search svg{ width:17px; height:17px; }

  .btn-dock-cta{
    height:40px;
    display:inline-flex;
    align-items:center;
    padding:0 18px;
    border-radius:999px;
    background:var(--accent-500);
    color:#fff;
    font-size:14px;
    font-weight:600;
    white-space:nowrap;
    transition:background .2s var(--ease), transform .2s var(--ease);
  }
  .btn-dock-cta:hover{ background:var(--accent-600); transform:translateY(-1px); }
  .btn-dock-cta:active{ transform:translateY(0); filter:brightness(.97); }

  .dock-burger{
    width:38px; height:38px;
    border-radius:999px;
    display:none;
    align-items:center;
    justify-content:center;
    color:var(--brand-900);
    border:1px solid var(--line);
    background:rgba(255,255,255,.6);
  }
  .dock-burger svg{ width:18px; height:18px; }

  /* ---------- 移动抽屉 ---------- */
  .drawer{
    position:fixed;
    inset:0;
    z-index:120;
    background:var(--brand-900);
    color:var(--paper);
    display:flex;
    flex-direction:column;
    padding:22px 22px 26px;
    transform:translateY(-8px);
    opacity:0;
    visibility:hidden;
    transition:opacity .24s var(--ease), transform .24s var(--ease), visibility .24s;
  }
  .drawer.open{ opacity:1; visibility:visible; transform:translateY(0); }
  .drawer-top{
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding-bottom:16px;
    border-bottom:1px solid rgba(255,255,255,.14);
  }
  .drawer-top .brand-text{ color:var(--paper); font-size:16px; }
  .drawer-top .brand-text em{ color:var(--mint-300); }
  .drawer-close{
    width:38px; height:38px;
    border-radius:999px;
    border:1px solid rgba(255,255,255,.22);
    display:inline-flex;
    align-items:center;
    justify-content:center;
    font-size:18px;
    line-height:1;
    color:var(--paper);
  }
  .drawer-nav{ display:flex; flex-direction:column; margin-top:10px; }
  .drawer-link{
    height:56px;
    display:flex;
    align-items:center;
    font-size:16px;
    color:rgba(247,245,240,.86);
    border-bottom:1px solid rgba(255,255,255,.1);
    transition:color .2s var(--ease), padding-left .2s var(--ease);
  }
  .drawer-link:hover{ color:#fff; padding-left:6px; }
  .drawer-link.active{ color:#fff; font-weight:600; }
  .drawer-link.active::before{
    content:"";
    width:3px; height:18px;
    border-radius:2px;
    background:var(--accent-500);
    margin-right:10px;
  }
  .drawer-foot{ margin-top:auto; padding-top:22px; }

  .btn-accent{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    height:48px;
    padding:0 26px;
    border-radius:999px;
    background:var(--accent-500);
    color:#fff;
    font-size:15px;
    font-weight:600;
    transition:background .2s var(--ease), transform .2s var(--ease);
  }
  .btn-accent:hover{ background:var(--accent-600); transform:translateY(-1px); }
  .btn-accent:active{ transform:translateY(0); }
  .btn-outline{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    height:48px;
    padding:0 24px;
    border-radius:999px;
    border:1.5px solid var(--brand-700);
    color:var(--brand-700);
    font-size:15px;
    font-weight:600;
    background:transparent;
    transition:background .2s var(--ease), transform .2s var(--ease);
  }
  .btn-outline:hover{ background:rgba(16,64,59,.08); transform:translateY(-1px); }
  .btn-block{ width:100%; }

  /* ---------- 页头 ---------- */
  .page-head{
    position:relative;
    overflow:hidden;
    padding:154px 0 60px;
    background:linear-gradient(180deg,#FBFAF7 0%, var(--paper) 100%);
    border-bottom:1px solid var(--line);
  }
  .page-head::before{
    content:"";
    position:absolute;
    inset:0;
    background-image:radial-gradient(rgba(16,64,59,.9) 1px, transparent 1px);
    background-size:22px 22px;
    opacity:.055;
    pointer-events:none;
  }
  .page-head .container{ position:relative; z-index:1; }

  .crumbs{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:8px;
    font-size:13px;
    letter-spacing:.02em;
    color:var(--ink-400);
    list-style:none;
    margin-bottom:20px;
  }
  .crumbs a{ color:var(--ink-600); transition:color .2s var(--ease); }
  .crumbs a:hover{ color:var(--brand-700); }
  .crumbs .sep{ color:#C6CCC7; }
  .crumbs .now{ color:var(--brand-700); font-weight:600; }

  .head-tag{
    display:inline-flex;
    align-items:center;
    height:28px;
    padding:0 12px;
    border-radius:999px;
    background:rgba(127,209,185,.22);
    color:var(--brand-700);
    font-size:12.5px;
    font-weight:600;
    letter-spacing:.03em;
    margin-bottom:18px;
  }
  .page-head h1{ max-width:820px; }
  .head-sub{
    margin-top:18px;
    max-width:680px;
    font-size:17px;
    color:var(--ink-600);
  }
  .head-actions{
    display:flex;
    flex-wrap:wrap;
    gap:12px;
    margin-top:28px;
  }
  .head-chips{
    display:flex;
    flex-wrap:wrap;
    gap:10px;
    margin-top:34px;
    padding-top:24px;
    border-top:1px solid var(--line);
  }
  .chip{
    display:inline-flex;
    align-items:center;
    gap:8px;
    height:38px;
    padding:0 16px;
    border-radius:999px;
    background:var(--surface);
    border:1px solid var(--line);
    font-size:14px;
    color:var(--brand-700);
    transition:box-shadow .2s var(--ease), transform .2s var(--ease), border-color .2s var(--ease);
  }
  .chip:hover{ transform:translateY(-2px); box-shadow:var(--sh-1); border-color:#D3DCD6; }
  .chip i{
    width:7px; height:7px;
    border-radius:999px;
    background:var(--accent-500);
    display:inline-block;
  }

  /* ---------- 文档式主体 ---------- */
  .doc-section{ padding:var(--sect-desktop) 0; }
  .doc-grid{
    display:grid;
    grid-template-columns:3fr 9fr;
    gap:56px;
    align-items:start;
  }

  .doc-toc{
    position:sticky;
    top:104px;
    align-self:start;
  }
  .toc-title{
    font-size:12.5px;
    font-weight:700;
    letter-spacing:.14em;
    color:var(--ink-400);
    margin-bottom:14px;
  }
  .toc-list{
    list-style:none;
    border-left:1px solid var(--line);
  }
  .toc-link{
    position:relative;
    display:block;
    padding:10px 4px 10px 16px;
    margin-left:-1px;
    font-size:14px;
    color:var(--ink-600);
    border-left:2px solid transparent;
    transition:color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
  }
  .toc-link:hover{ color:var(--brand-700); }
  .toc-link.active{
    color:var(--brand-900);
    font-weight:600;
    border-left-color:var(--accent-500);
    background:linear-gradient(90deg, rgba(255,107,53,.09), rgba(255,107,53,0));
  }
  .toc-note{
    margin-top:22px;
    padding:16px;
    border-radius:var(--r-card);
    background:var(--paper-soft);
    border:1px solid var(--line);
    font-size:13px;
    line-height:1.75;
    color:var(--ink-600);
  }
  .toc-note strong{ color:var(--brand-700); }

  .faq-group{ margin-bottom:52px; scroll-margin-top:120px; }
  .faq-group:last-child{ margin-bottom:0; }
  .group-head{
    display:flex;
    align-items:baseline;
    gap:14px;
    padding-bottom:14px;
    border-bottom:1px solid var(--line);
  }
  .group-head h2{
    position:relative;
    padding-left:18px;
    font-size:clamp(22px,2.4vw,28px);
  }
  .group-head h2::before{
    content:"";
    position:absolute;
    left:0; top:.18em;
    width:4px; height:.95em;
    border-radius:2px;
    background:var(--accent-500);
  }
  .group-head span{
    font-size:13px;
    letter-spacing:.06em;
    color:var(--ink-400);
    font-weight:600;
  }
  .group-intro{
    margin:16px 0 6px;
    font-size:15px;
    color:var(--ink-600);
    max-width:720px;
  }

  .faq-row{ border-bottom:1px solid var(--line); }
  .faq-row summary{
    list-style:none;
    display:flex;
    align-items:flex-start;
    justify-content:space-between;
    gap:20px;
    padding:20px 4px;
    font-size:16px;
    font-weight:600;
    color:var(--ink-900);
    cursor:pointer;
    transition:color .2s var(--ease), background .2s var(--ease);
  }
  .faq-row summary::-webkit-details-marker{ display:none; }
  .faq-row summary:hover{ color:var(--brand-700); background:var(--paper-soft); }
  .faq-icon{
    position:relative;
    flex:0 0 auto;
    width:20px; height:20px;
    margin-top:4px;
  }
  .faq-icon::before,
  .faq-icon::after{
    content:"";
    position:absolute;
    background:var(--accent-500);
    border-radius:2px;
    transition:transform .2s var(--ease), opacity .2s var(--ease);
  }
  .faq-icon::before{ left:0; right:0; top:9px; height:2px; }
  .faq-icon::after{ top:0; bottom:0; left:9px; width:2px; }
  details[open] > summary .faq-icon::after{ transform:scaleY(0); opacity:0; }
  .faq-body{
    padding:0 44px 22px 4px;
    font-size:15px;
    line-height:1.9;
    color:var(--ink-600);
    max-width:720px;
    animation:qaFade .22s var(--ease);
  }
  .faq-body .lead{
    color:var(--brand-700);
    font-weight:600;
  }
  .faq-body ul{
    margin:10px 0 0;
    padding-left:18px;
    list-style:none;
  }
  .faq-body li{
    position:relative;
    padding-left:16px;
    margin-bottom:6px;
  }
  .faq-body li::before{
    content:"";
    position:absolute;
    left:0; top:.72em;
    width:6px; height:6px;
    border-radius:999px;
    background:var(--mint-300);
  }
  @keyframes qaFade{
    from{ opacity:0; transform:translateY(-4px); }
    to{ opacity:1; transform:translateY(0); }
  }

  /* ---------- 分组卡片 ---------- */
  .card-section{
    padding:var(--sect-desktop) 0;
    background:var(--surface);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
  }
  .sec-head{ max-width:660px; margin-bottom:40px; }
  .sec-eyebrow{
    display:inline-block;
    font-size:12.5px;
    font-weight:700;
    letter-spacing:.14em;
    color:var(--accent-500);
    margin-bottom:12px;
  }
  .sec-head p{
    margin-top:14px;
    font-size:16px;
    color:var(--ink-600);
  }
  .group-cards{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:24px;
  }
  .group-card{
    display:flex;
    flex-direction:column;
    background:var(--paper-soft);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    overflow:hidden;
    box-shadow:var(--sh-1);
    transition:transform .22s var(--ease), box-shadow .22s var(--ease);
  }
  .group-card:hover{ transform:translateY(-4px); box-shadow:var(--sh-2); }
  .group-card .thumb{
    aspect-ratio:16/10;
    width:100%;
    object-fit:cover;
    background:#E7EAE6;
  }
  .group-card .body{ padding:24px 24px 26px; }
  .badge{
    display:inline-flex;
    align-items:center;
    height:26px;
    padding:0 11px;
    border-radius:999px;
    background:rgba(127,209,185,.24);
    color:var(--brand-700);
    font-size:12.5px;
    font-weight:600;
    letter-spacing:.02em;
    margin-bottom:14px;
  }
  .group-card h3{ margin-bottom:10px; transition:color .2s var(--ease); }
  .group-card:hover h3{ color:var(--brand-700); }
  .group-card p{ font-size:15px; color:var(--ink-600); }
  .card-more{
    display:inline-flex;
    align-items:center;
    gap:6px;
    margin-top:18px;
    font-size:14px;
    font-weight:600;
    color:var(--brand-700);
  }
  .card-more span{ transition:transform .2s var(--ease); }
  .group-card:hover .card-more span{ transform:translateX(4px); }

  /* ---------- 深色 CTA ---------- */
  .cta-wrap{ padding:var(--sect-desktop) 0; }
  .cta-dark{
    position:relative;
    overflow:hidden;
    border-radius:var(--r-block);
    background:var(--brand-900);
    color:var(--paper);
    padding:56px 56px;
    display:grid;
    grid-template-columns:6fr 6fr;
    gap:40px;
    align-items:center;
    box-shadow:var(--sh-2);
  }
  .cta-dark::before{
    content:"";
    position:absolute;
    right:-120px; top:-120px;
    width:360px; height:360px;
    border-radius:999px;
    border:1px solid rgba(127,209,185,.22);
    pointer-events:none;
  }
  .cta-dark::after{
    content:"";
    position:absolute;
    right:-60px; top:-60px;
    width:240px; height:240px;
    border-radius:999px;
    border:1px solid rgba(255,107,53,.22);
    pointer-events:none;
  }
  .cta-dark h2{
    color:#fff;
    font-size:clamp(22px,2.6vw,30px);
    margin-bottom:14px;
  }
  .cta-dark p{
    color:rgba(247,245,240,.78);
    font-size:15.5px;
    max-width:520px;
  }
  .cta-actions{
    position:relative;
    display:flex;
    flex-wrap:wrap;
    gap:14px;
    justify-content:flex-end;
  }
  .btn-ghost-light{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    height:48px;
    padding:0 24px;
    border-radius:999px;
    border:1.5px solid rgba(247,245,240,.5);
    color:var(--paper);
    font-size:15px;
    font-weight:600;
    transition:background .2s var(--ease), border-color .2s var(--ease);
  }
  .btn-ghost-light:hover{ background:rgba(247,245,240,.12); border-color:rgba(247,245,240,.85); }

  /* ---------- 返回顶部 ---------- */
  .back-top{
    position:fixed;
    right:24px;
    bottom:26px;
    z-index:70;
    display:inline-flex;
    align-items:center;
    gap:8px;
    height:46px;
    padding:0 18px;
    border-radius:999px;
    background:var(--surface);
    border:1px solid var(--line);
    color:var(--brand-700);
    font-size:14px;
    font-weight:600;
    box-shadow:var(--sh-1);
    opacity:0;
    visibility:hidden;
    transform:translateY(8px);
    transition:opacity .22s var(--ease), transform .22s var(--ease), visibility .22s, box-shadow .22s var(--ease);
  }
  .back-top.show{ opacity:1; visibility:visible; transform:translateY(0); }
  .back-top:hover{ box-shadow:var(--sh-2); }
  .back-top svg{ width:14px; height:14px; }

  /* ---------- 页脚 ---------- */
  .site-footer{
    background:var(--brand-900);
    color:var(--paper);
    padding:64px 0 28px;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.5fr 1fr 1fr 1.2fr;
    gap:0;
  }
  .footer-col{ padding:0 28px; }
  .footer-col:first-child{ padding-left:0; }
  .footer-col:last-child{ padding-right:0; }
  .footer-col + .footer-col{ border-left:1px solid rgba(255,255,255,.12); }
  .footer-brand{
    display:inline-flex;
    align-items:center;
    gap:10px;
    margin-bottom:16px;
  }
  .footer-brand .brand-mark{ background:rgba(247,245,240,.12); }
  .footer-brand .brand-text{ color:var(--paper); }
  .footer-brand .brand-text em{ color:var(--mint-300); }
  .footer-desc{
    font-size:14px;
    line-height:1.8;
    color:rgba(247,245,240,.7);
    max-width:280px;
  }
  .footer-title{
    font-size:13px;
    font-weight:700;
    letter-spacing:.12em;
    color:rgba(247,245,240,.55);
    margin-bottom:16px;
  }
  .footer-list{ list-style:none; display:flex; flex-direction:column; gap:11px; }
  .footer-list a{
    font-size:14px;
    color:rgba(247,245,240,.82);
    transition:color .2s var(--ease);
  }
  .footer-list a:hover{ color:#fff; text-decoration:underline; text-underline-offset:3px; }
  .footer-note{
    font-size:13px;
    line-height:1.85;
    color:rgba(247,245,240,.66);
  }
  .footer-note strong{ color:rgba(247,245,240,.9); font-weight:600; }
  .footer-bottom{
    margin-top:44px;
    padding-top:22px;
    border-top:1px solid rgba(255,255,255,.12);
    display:flex;
    flex-wrap:wrap;
    gap:12px 24px;
    align-items:center;
    justify-content:space-between;
    font-size:13px;
    color:rgba(247,245,240,.6);
  }
  .footer-bottom a{ color:rgba(247,245,240,.72); }
  .footer-bottom a:hover{ color:#fff; text-decoration:underline; text-underline-offset:3px; }

  /* ---------- 响应式 ---------- */
  @media (max-width:1279px){
    .doc-grid{ gap:40px; }
  }

  @media (max-width:1023px){
    .dock-nav{ gap:20px; }
    .dock-search{ display:none; }
    .doc-grid{ grid-template-columns:1fr; gap:32px; }
    .doc-toc{
      position:static;
      border:1px solid var(--line);
      border-radius:var(--r-card);
      background:var(--surface);
      padding:20px;
      box-shadow:var(--sh-1);
    }
    .toc-note{ margin-top:16px; }
    .cta-dark{ padding:44px 36px; grid-template-columns:1fr; }
    .cta-actions{ justify-content:flex-start; }
    .footer-grid{ grid-template-columns:1fr 1fr; row-gap:34px; }
    .footer-col{ padding:0 20px; }
    .footer-col:nth-child(odd){ padding-left:0; }
    .footer-col:nth-child(3){ border-left:none; padding-left:0; }
    .footer-col:nth-child(4){ padding-right:0; }
  }

  @media (max-width:767px){
    .container{ padding:0 20px; }
    .site-dock{ width:calc(100% - 24px); top:12px; }
    .dock-inner{ padding:0 10px 0 12px; gap:10px; }
    .dock-nav{ display:none; }
    .btn-dock-cta{ display:none; }
    .dock-burger{ display:inline-flex; margin-left:auto; }
    .brand-text{ font-size:14px; }
    .brand-text em{ font-size:11.5px; }

    .page-head{ padding:118px 0 44px; }
    .head-sub{ font-size:16px; }
    .head-actions .btn-accent,
    .head-actions .btn-outline{ width:100%; }

    .doc-section,.card-section,.cta-wrap{ padding:var(--sect-mobile) 0; }
    .group-cards{ grid-template-columns:1fr; gap:16px; }
    .cta-dark{ padding:34px 24px; border-radius:20px; }
    .faq-body{ padding-right:8px; }

    .footer-grid{ grid-template-columns:1fr; row-gap:0; }
    .footer-col{ padding:22px 0; border-top:1px solid rgba(255,255,255,.12); border-left:none !important; }
    .footer-col:first-child{ padding-top:0; border-top:none; }
    .footer-bottom{ flex-direction:column; align-items:flex-start; }

    .back-top{ right:16px; bottom:16px; }
  }

  @media (max-width:519px){
    h1{ font-size:28px; }
    .faq-row summary{ font-size:15px; }
    .chip{ font-size:13px; }
  }

  @media (prefers-reduced-motion:reduce){
    *{ animation-duration:.01ms !important; transition-duration:.01ms !important; scroll-behavior:auto !important; }
  }