/* roulang page: index */
:root{
  --c-primary:#1F5FC4;
  --c-primary-d:#174A9C;
  --c-primary-l:#E7EFFC;
  --c-accent:#E4663A;
  --c-accent-l:#FDEDE6;
  --ink:#14202E;
  --ink-2:#4A5C72;
  --ink-3:#8595A8;
  --line:#E2E9F3;
  --line-2:#EDF2F8;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --surface-alt:#EEF4FC;
  --surface-deep:#10233D;
  --sh-sm:0 2px 8px rgba(16,35,61,.05);
  --sh-md:0 10px 24px rgba(16,35,61,.07);
  --sh-lg:0 20px 44px rgba(16,35,61,.10);
  --r-card:16px;
  --r-img:12px;
  --r-badge:6px;
  --r-pill:999px;
  --r-input:10px;
  --font-cn:"PingFang SC","MiSans","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  padding:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.78;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{
  font-family:var(--font-cn);
  color:var(--ink);
  line-height:1.30;
  margin:0 0 16px;
  font-weight:700;
  letter-spacing:.2px;
}
h1{font-size:clamp(28px,4vw,40px);}
h2{font-size:clamp(24px,3vw,30px);}
h3{font-size:clamp(19px,2vw,22px);font-weight:600;}
h4{font-size:17px;font-weight:600;}
p{margin:0 0 1.15em;color:var(--ink-2);}
p:last-child{margin-bottom:0;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease-out,background-color .2s ease-out;}
a:hover{color:var(--c-primary-d);}
img{max-width:100%;display:block;}
ul,ol{margin:0 0 1.1em;padding-left:1.2em;color:var(--ink-2);}
li{margin-bottom:.45em;line-height:1.6;}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.container > .grid-x.grid-padding-x{margin-left:-15px;margin-right:-15px;}
.reading{max-width:780px;margin:0 auto;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:var(--r-pill);
  padding:12px 26px;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  border:1px solid transparent;
  cursor:pointer;
  transition:all .2s ease-out;
  text-align:center;
  white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff;border-color:var(--c-primary);}
.btn-primary:hover{background:var(--c-primary-d);border-color:var(--c-primary-d);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-l);color:var(--c-primary-d);border-color:var(--c-primary-d);}
.btn-ghost:active{transform:translateY(1px);}
.btn-accent{background:var(--c-accent);border-color:var(--c-accent);color:#fff;}
.btn-accent:hover{background:#cf5329;border-color:#cf5329;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.72);}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.btn-sm{padding:9px 20px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled]{opacity:.4;cursor:not-allowed;}

.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-weight:600;
  color:var(--c-primary);
  font-size:15px;
}
.link-arrow span{transition:transform .2s ease-out;}
.link-arrow:hover span{transform:translateX(4px);}
.link-arrow:hover{text-decoration:underline;text-underline-offset:4px;}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  border-radius:var(--r-badge);
  padding:5px 11px;
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.3px;
  background:var(--c-primary-l);
  color:var(--c-primary-d);
}
.badge-accent{background:var(--c-accent-l);color:#B4431F;}
.badge-teal{background:rgba(46,158,150,.12);color:#1F6F6A;}
.badge-violet{background:rgba(106,90,205,.12);color:#4A3DB0;}
.badge-soft{background:var(--surface-alt);color:var(--ink-2);}

/* ---------- 浮动 Dock 导航 ---------- */
.site-dock{
  position:fixed;
  top:16px;
  left:50%;
  transform:translateX(-50%);
  width:min(1080px,calc(100% - 32px));
  z-index:200;
}
.dock-inner{
  display:flex;
  align-items:center;
  gap:16px;
  background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  box-shadow:var(--sh-md);
  padding:10px 14px 10px 22px;
  transition:padding .2s ease-out,box-shadow .2s ease-out,background-color .2s ease-out;
}
.site-dock.is-scrolled .dock-inner{
  padding-top:7px;
  padding-bottom:7px;
  box-shadow:var(--sh-lg);
  background:rgba(255,255,255,.95);
}
.brand{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:17px;
  font-weight:700;
  color:var(--ink);
  letter-spacing:.2px;
  white-space:nowrap;
  flex:0 0 auto;
}
.brand:hover{color:var(--c-primary);}
.brand-mark{color:var(--c-primary);}
.brand-sep{color:var(--line);font-weight:400;}
.brand-sub{font-size:15px;font-weight:600;color:var(--ink-2);}
.dock-panel{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex:1 1 auto;
  min-width:0;
}
.dock-nav{
  display:flex;
  align-items:center;
  gap:4px;
}
.dock-nav a{
  position:relative;
  display:inline-flex;
  align-items:center;
  padding:9px 14px;
  font-size:15px;
  font-weight:500;
  color:var(--ink-2);
  border-radius:var(--r-pill);
  transition:color .2s ease-out,background-color .2s ease-out;
}
.dock-nav a:hover{color:var(--c-primary);background:var(--c-primary-l);}
.dock-nav a.active{color:var(--c-primary);}
.dock-nav a.active::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:1px;
  height:3px;
  border-radius:2px;
  background:var(--c-primary);
}
.dock-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.dock-search{display:flex;align-items:center;gap:6px;}
.dock-search input{
  width:0;
  padding:0;
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  background:#fff;
  opacity:0;
  height:38px;
  font-size:14px;
  color:var(--ink);
  transition:width .2s ease-out,opacity .2s ease-out,padding .2s ease-out;
}
.dock-search input::placeholder{color:var(--ink-3);}
.dock-search.is-open input{width:170px;padding:0 14px;opacity:1;}
.icon-btn{
  width:38px;
  height:38px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink-2);
  cursor:pointer;
  transition:all .2s ease-out;
}
.icon-btn:hover{color:var(--c-primary);border-color:var(--c-primary-l);background:var(--c-primary-l);}
.icon-btn:active{transform:scale(.96);}
.icon-btn svg{width:18px;height:18px;}
.dock-toggle{
  display:none;
  width:42px;
  height:42px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:#fff;
  cursor:pointer;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
  padding:0;
}
.dock-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform .2s ease-out,opacity .2s ease-out;}
.dock-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.dock-toggle.is-open span:nth-child(2){opacity:0;}
.dock-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ---------- 通用板块 ---------- */
main{padding-top:96px;}
.section{padding:96px 0;}
.section-alt{background:var(--surface-alt);}
.section-head{max-width:720px;margin-bottom:48px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head h2{margin-bottom:14px;}
.section-head p{font-size:16.5px;}
.eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  letter-spacing:1.4px;
  color:var(--c-primary);
  margin-bottom:14px;
}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:64px 0 88px;
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;
  top:-160px;
  right:-120px;
  width:620px;
  height:620px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(31,95,196,.13),rgba(31,95,196,0) 68%);
  pointer-events:none;
}
.hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(var(--line-2) 1px,transparent 1px),linear-gradient(90deg,var(--line-2) 1px,transparent 1px);
  background-size:64px 64px;
  opacity:.5;
  pointer-events:none;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.55),transparent 72%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.55),transparent 72%);
}
.hero .container{position:relative;z-index:1;}
.hero-copy{padding-right:24px;}
.hero h1{margin:18px 0 20px;}
.hero-sub{
  font-size:17.5px;
  line-height:1.75;
  color:var(--ink-2);
  max-width:560px;
  margin-bottom:30px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:38px;}
.hero-stats{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  list-style:none;
  margin:0;
  padding:22px 0 0;
  border-top:1px solid var(--line);
}
.hero-stats li{
  margin:0;
  padding-right:16px;
  border-right:1px solid var(--line);
}
.hero-stats li:last-child{border-right:0;}
.hero-stats strong{
  display:block;
  font-size:22px;
  font-weight:700;
  color:var(--c-primary);
  line-height:1.2;
  margin-bottom:4px;
}
.hero-stats span{font-size:13.5px;color:var(--ink-3);line-height:1.5;}
.hero-visual{position:relative;}
.hero-img{
  width:100%;
  aspect-ratio:16 / 11;
  object-fit:cover;
  border-radius:var(--r-card);
  box-shadow:var(--sh-lg);
  border:1px solid var(--line);
}
.hero-float{
  position:absolute;
  left:-18px;
  bottom:-26px;
  width:min(280px,88%);
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-md);
  padding:18px 20px;
}
.hero-float .badge{margin-bottom:10px;}
.hero-float p{font-size:14px;line-height:1.6;margin-bottom:6px;color:var(--ink-2);}
.hero-float p:last-child{margin-bottom:0;}
.hero-float .dot{color:var(--c-accent);font-weight:700;margin-right:6px;}

/* ---------- 信任带 ---------- */
.trust{
  background:var(--surface);
  border-top:1px solid var(--line-2);
  border-bottom:1px solid var(--line-2);
  padding:26px 0;
}
.trust-list{
  display:grid;
  grid-template-columns:repeat(6,1fr);
  gap:12px;
  list-style:none;
  margin:0;
  padding:0;
  text-align:center;
}
.trust-list li{
  margin:0;
  font-size:14px;
  font-weight:500;
  color:var(--ink-3);
  padding:8px 4px;
  border-radius:var(--r-badge);
  transition:color .2s ease-out,background-color .2s ease-out;
  cursor:default;
}
.trust-list li:hover{color:var(--c-primary);background:var(--c-primary-l);}

/* ---------- 功能分组 ---------- */
.feature-layout{align-items:flex-start;}
.feature-aside{
  position:sticky;
  top:120px;
  padding-right:32px;
}
.feature-aside h2{margin-bottom:16px;}
.feature-aside p{margin-bottom:22px;}
.feature-cards{margin-top:-10px;}
.feature-card{
  margin-bottom:30px;
}
.feature-card .card-inner{
  height:100%;
  background:var(--surface);
  border:1px solid #E9EFF8;
  border-radius:var(--r-card);
  box-shadow:var(--sh-sm);
  padding:26px 24px;
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.feature-card .card-inner:hover{
  transform:translateY(-3px);
  box-shadow:var(--sh-md);
  border-color:var(--c-primary-l);
}
.feature-card:nth-child(even) .card-inner{background:linear-gradient(180deg,#FFFFFF 0%,#FBFDff 100%);}
.feature-icon{
  width:44px;
  height:44px;
  border-radius:12px;
  background:var(--c-primary-l);
  display:flex;
  align-items:center;
  justify-content:center;
  margin-bottom:18px;
}
.feature-icon svg{width:22px;height:22px;stroke:var(--c-primary);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
.feature-icon i{position:absolute;width:8px;height:8px;border-radius:2px;background:var(--c-accent);transform:translate(16px,-16px);}
.feature-card h3{font-size:20px;margin-bottom:10px;}
.feature-card p{font-size:15px;margin-bottom:16px;}

/* ---------- 使用场景 ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:34px;
  position:relative;
  margin-top:8px;
}
.steps::before{
  content:"";
  position:absolute;
  top:74px;
  left:8%;
  right:8%;
  height:1px;
  border-top:1px dashed #BFD2EE;
}
.step{position:relative;z-index:1;}
.step-num{
  font-size:52px;
  font-weight:700;
  line-height:1;
  color:#D5E3F8;
  letter-spacing:-2px;
  margin-bottom:18px;
}
.step-img{
  width:100%;
  aspect-ratio:16 / 10;
  object-fit:cover;
  border-radius:var(--r-img);
  border:1px solid var(--line);
  margin-bottom:20px;
}
.step h3{font-size:20px;margin-bottom:10px;}
.step p{font-size:15px;}

/* ---------- 案例 ---------- */
.case-grid{align-items:stretch;}
.case-main{
  background:var(--surface);
  border:1px solid #E9EFF8;
  border-radius:var(--r-card);
  box-shadow:var(--sh-sm);
  overflow:hidden;
  height:100%;
  display:flex;
  flex-direction:column;
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.case-main:hover{transform:translateY(-3px);box-shadow:var(--sh-md);}
.case-main img{width:100%;aspect-ratio:16 / 9;object-fit:cover;}
.case-main .case-body{padding:28px 28px 30px;}
.case-main h3{font-size:23px;margin:14px 0 12px;}
.case-main p{font-size:15.5px;}
.case-metrics{
  display:flex;
  gap:34px;
  margin-top:22px;
  padding-top:20px;
  border-top:1px solid var(--line-2);
}
.case-metrics div strong{
  display:block;
  font-size:26px;
  font-weight:700;
  color:var(--c-accent);
  line-height:1.2;
  margin-bottom:4px;
}
.case-metrics div span{font-size:13.5px;color:var(--ink-3);}
.case-side{display:flex;flex-direction:column;gap:24px;height:100%;}
.case-small{
  flex:1 1 0;
  background:var(--surface);
  border:1px solid #E9EFF8;
  border-radius:var(--r-card);
  box-shadow:var(--sh-sm);
  padding:24px;
  display:flex;
  flex-direction:column;
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.case-small:hover{transform:translateY(-3px);box-shadow:var(--sh-md);border-color:var(--c-primary-l);}
.case-small h4{font-size:18px;margin:12px 0 10px;line-height:1.45;}
.case-small p{font-size:14.5px;margin-bottom:16px;}
.case-small .link-arrow{margin-top:auto;font-size:14.5px;}

/* ---------- 价格 ---------- */
.price-toggle{
  display:inline-flex;
  gap:4px;
  padding:4px;
  background:var(--surface-alt);
  border-radius:var(--r-pill);
  margin-bottom:38px;
}
.price-toggle span{
  padding:8px 20px;
  border-radius:var(--r-pill);
  font-size:14px;
  font-weight:600;
  color:var(--ink-3);
  transition:all .2s ease-out;
}
.price-toggle span.on{background:#fff;color:var(--c-primary);box-shadow:var(--sh-sm);}
.price-grid{align-items:stretch;}
.price-card{
  position:relative;
  background:var(--surface);
  border:1px solid #E9EFF8;
  border-radius:var(--r-card);
  box-shadow:var(--sh-sm);
  padding:32px 26px;
  height:100%;
  display:flex;
  flex-direction:column;
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.price-card:hover{transform:translateY(-3px);box-shadow:var(--sh-md);}
.price-card h3{font-size:19px;margin-bottom:8px;}
.price-card .plan-note{font-size:14px;color:var(--ink-3);margin-bottom:20px;min-height:42px;}
.price-amount{
  font-size:40px;
  font-weight:700;
  color:var(--c-accent);
  line-height:1.1;
  margin-bottom:6px;
}
.price-amount small{font-size:15px;font-weight:500;color:var(--ink-3);margin-left:4px;}
.price-line{font-size:14px;color:var(--ink-2);margin-bottom:22px;padding-bottom:20px;border-bottom:1px solid var(--line-2);}
.price-list{list-style:none;margin:0 0 26px;padding:0;flex:1 1 auto;}
.price-list li{
  position:relative;
  padding-left:26px;
  font-size:14.5px;
  color:var(--ink-2);
  margin-bottom:11px;
}
.price-list li::before{
  content:"";
  position:absolute;
  left:2px;
  top:9px;
  width:12px;
  height:7px;
  border-left:2px solid var(--c-primary);
  border-bottom:2px solid var(--c-primary);
  transform:rotate(-45deg);
  border-radius:1px;
}
.price-card.featured{
  border-top:4px solid var(--c-accent);
  box-shadow:var(--sh-lg);
  transform:scale(1.02);
}
.price-card.featured:hover{transform:scale(1.02) translateY(-3px);}
.plan-tag{
  position:absolute;
  top:-13px;
  right:22px;
  background:var(--c-accent);
  color:#fff;
  font-size:12.5px;
  font-weight:600;
  padding:4px 12px;
  border-radius:var(--r-badge);
  box-shadow:var(--sh-sm);
}

/* ---------- 资讯 / CMS 列表 ---------- */
.news-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:40px;
}
.news-head h2{margin-bottom:0;}
.news-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.news-card{
  display:flex;
  flex-direction:column;
  background:var(--surface);
  border:1px solid #E9EFF8;
  border-radius:var(--r-card);
  box-shadow:var(--sh-sm);
  overflow:hidden;
  color:inherit;
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--sh-md);border-color:var(--c-primary-l);color:inherit;}
.news-thumb{
  width:100%;
  aspect-ratio:16 / 10;
  background:var(--surface-alt);
  overflow:hidden;
}
.news-thumb img{width:100%;height:100%;object-fit:cover;}
.news-body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1 1 auto;}
.news-body h3{
  font-size:17px;
  line-height:1.45;
  margin:12px 0 10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-body p{
  font-size:14px;
  color:var(--ink-2);
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:16px;
}
.news-date{
  margin-top:auto;
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13.5px;
  color:var(--ink-3);
}
.news-date svg{width:15px;height:15px;stroke:var(--ink-3);fill:none;stroke-width:1.6;}
.news-card--lead{
  grid-column:span 2;
  flex-direction:row;
  align-items:stretch;
}
.news-card--lead .news-thumb{
  width:44%;
  aspect-ratio:auto;
  flex:0 0 44%;
}
.news-card--lead .news-body{justify-content:center;padding:26px 26px;}
.news-card--lead .news-body h3{font-size:21px;-webkit-line-clamp:2;}
.news-card--lead .news-body p{-webkit-line-clamp:3;font-size:14.5px;}
.news-empty{
  grid-column:1 / -1;
  background:var(--surface);
  border:1px dashed #CFDCEE;
  border-radius:var(--r-card);
  padding:56px 24px;
  text-align:center;
}
.news-empty .empty-mark{
  width:96px;
  height:96px;
  margin:0 auto 18px;
  border-radius:50%;
  background:var(--c-primary-l);
  display:flex;
  align-items:center;
  justify-content:center;
}
.news-empty .empty-mark svg{width:44px;height:44px;stroke:var(--c-primary);fill:none;stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round;}
.news-empty p{font-size:16px;color:var(--ink-2);margin-bottom:20px;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{
  border-bottom:1px solid var(--line);
}
.faq-item summary{
  position:relative;
  list-style:none;
  cursor:pointer;
  padding:20px 44px 20px 18px;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  transition:color .2s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";
  position:absolute;
  left:0;
  top:20px;
  bottom:20px;
  width:3px;
  border-radius:2px;
  background:var(--c-primary);
  opacity:0;
  transition:opacity .22s ease-out;
}
.faq-item summary::after{
  content:"+";
  position:absolute;
  right:10px;
  top:50%;
  transform:translateY(-50%);
  font-size:22px;
  font-weight:400;
  color:var(--c-primary);
  transition:transform .22s ease-out;
}
.faq-item[open] summary{color:var(--c-primary);}
.faq-item[open] summary::before{opacity:1;}
.faq-item[open] summary::after{content:"−";transform:translateY(-50%) rotate(180deg);}
.faq-item summary:hover{color:var(--c-primary);}
.faq-body{
  background:#F8FAFE;
  border-radius:12px;
  padding:18px 22px;
  margin:0 0 20px;
}
.faq-body p{font-size:15px;color:var(--ink-2);margin-bottom:10px;}
.faq-body p:last-child{margin-bottom:0;}

/* ---------- 底部 CTA ---------- */
.cta-band{
  background:var(--surface-deep);
  padding:88px 0;
}
.cta-band h2{color:#fff;margin-bottom:16px;}
.cta-band p{color:#C7D6EA;font-size:16px;}
.cta-points{list-style:none;margin:26px 0 0;padding:0;}
.cta-points li{
  position:relative;
  padding-left:22px;
  color:#C7D6EA;
  font-size:15px;
  margin-bottom:10px;
}
.cta-points li::before{
  content:"";
  position:absolute;
  left:0;
  top:10px;
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--c-accent);
}
.cta-form{
  background:#fff;
  border-radius:var(--r-card);
  padding:32px 30px;
  box-shadow:var(--sh-lg);
}
.cta-form h3{font-size:21px;margin-bottom:6px;}
.cta-form .form-intro{font-size:14px;color:var(--ink-3);margin-bottom:22px;}
.field{margin-bottom:18px;}
.field label{
  display:block;
  font-size:14px;
  font-weight:600;
  color:var(--ink);
  margin-bottom:8px;
}
.field input,
.field textarea{
  width:100%;
  height:46px;
  padding:0 14px;
  border:1px solid var(--line);
  border-radius:var(--r-input);
  background:#fff;
  color:var(--ink);
  font-size:15px;
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.field textarea{height:104px;padding:12px 14px;line-height:1.6;resize:vertical;}
.field input::placeholder,
.field textarea::placeholder{color:var(--ink-3);}
.field input:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--c-primary);
  box-shadow:0 0 0 2px rgba(31,95,196,.22);
}
.form-tip{
  margin-top:14px;
  font-size:14px;
  color:var(--c-primary-d);
  min-height:20px;
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#F1F5FB;
  border-top:1px solid var(--line);
  padding:72px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:56px;
}
.footer-brand .brand{font-size:17px;margin-bottom:16px;}
.footer-brand p{font-size:14.5px;color:var(--ink-2);max-width:330px;}
.footer-contact{margin-top:18px;font-size:14px;color:var(--ink-2);}
.footer-contact strong{color:var(--ink);font-weight:600;}
.footer-col h4{
  font-size:15px;
  font-weight:700;
  color:var(--ink);
  margin-bottom:18px;
}
.footer-col ul{list-style:none;margin:0;padding:0;}
.footer-col li{margin-bottom:11px;}
.footer-col a{
  font-size:14px;
  color:var(--ink-2);
  display:inline-block;
  transition:color .2s ease-out,transform .2s ease-out;
}
.footer-col a:hover{color:var(--c-primary);transform:translateX(2px);}
.footer-col span{font-size:14px;color:var(--ink-2);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:22px 0;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.footer-bottom p{font-size:13.5px;color:var(--ink-3);margin:0;}
.footer-bottom .links{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom .links a{font-size:13.5px;color:var(--ink-3);}
.footer-bottom .links a:hover{color:var(--c-primary);}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1023px){
  .container{padding-left:20px;padding-right:20px;}
  main{padding-top:90px;}
  .section{padding:72px 0;}
  .hero{padding:40px 0 72px;}
  .hero-copy{padding-right:0;margin-bottom:56px;}
  .feature-aside{position:static;padding-right:0;margin-bottom:32px;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .news-card--lead{grid-column:span 2;flex-direction:row;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{padding:64px 0;}
}
@media screen and (max-width:767px){
  body{font-size:15.5px;}
  .site-dock{width:calc(100% - 24px);top:12px;}
  .dock-inner{padding:8px 10px 8px 16px;gap:10px;border-radius:24px;}
  .brand{font-size:16px;}
  .brand-sub,.brand-sep{display:none;}
  .dock-toggle{display:flex;}
  .dock-panel{
    position:absolute;
    top:calc(100% + 10px);
    left:0;
    right:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:20px;
    box-shadow:var(--sh-lg);
    padding:14px;
  }
  .dock-panel.is-open{display:flex;}
  .dock-nav{flex-direction:column;align-items:stretch;gap:2px;}
  .dock-nav a{padding:14px 16px;border-radius:14px;min-height:48px;font-size:16px;}
  .dock-nav a.active::after{display:none;}
  .dock-nav a.active{background:var(--c-primary-l);}
  .dock-actions{flex-direction:column;align-items:stretch;gap:10px;padding-top:6px;}
  .dock-search{justify-content:flex-start;}
  .dock-search input,
  .dock-search.is-open input{width:100%;opacity:1;padding:0 14px;height:46px;}
  .dock-actions .btn{width:100%;padding:14px 20px;}
  main{padding-top:84px;}
  .hero{padding:28px 0 64px;}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:18px 0;padding-top:20px;}
  .hero-stats li:nth-child(2){border-right:0;}
  .hero-stats li{padding-right:12px;}
  .hero-cta{gap:10px;}
  .hero-cta .btn{flex:1 1 100%;}
  .hero-float{position:static;width:100%;margin-top:18px;}
  .trust-list{grid-template-columns:repeat(3,1fr);}
  .section{padding:48px 0;}
  .section-head{margin-bottom:32px;}
  .feature-card{margin-bottom:20px;}
  .feature-card:nth-child(even) .card-inner{transform:none;}
  .steps{grid-template-columns:1fr;gap:36px;}
  .steps::before{display:none;}
  .step{border-left:2px dashed #CFDCEE;padding-left:20px;}
  .step-num{font-size:40px;margin-bottom:12px;}
  .case-side{gap:18px;}
  .price-card.featured{transform:none;}
  .price-card.featured:hover{transform:translateY(-3px);}
  .news-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .news-grid{grid-template-columns:1fr;}
  .news-card--lead{grid-column:span 1;flex-direction:column;}
  .news-card--lead .news-thumb{width:100%;flex:0 0 auto;aspect-ratio:16/10;}
  .news-card--lead .news-body{padding:20px;}
  .cta-band{padding:56px 0;}
  .cta-form{padding:24px 20px;margin-top:32px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:40px;}
  .site-footer{padding-top:56px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .faq-item summary{font-size:16px;padding:18px 40px 18px 16px;}
}
@media screen and (max-width:479px){
  .trust-list{grid-template-columns:repeat(2,1fr);}
  .hero h1{font-size:26px;}
  .btn{padding:12px 20px;font-size:14.5px;}
}

/* roulang page: article */
:root{
  --c-primary:#1F5FC4;
  --c-primary-d:#174A9C;
  --c-primary-l:#E7EFFC;
  --c-accent:#E4663A;
  --c-accent-l:#FDEDE6;
  --t-main:#14202E;
  --t-sub:#4A5C72;
  --t-weak:#8595A8;
  --border:#E2E9F3;
  --line:#EDF2F8;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --surface-alt:#EEF4FC;
  --surface-deep:#10233D;
  --r-card:16px;
  --r-img:12px;
  --r-badge:6px;
  --r-pill:999px;
  --sh-sm:0 2px 8px rgba(16,35,61,.05);
  --sh-md:0 10px 24px rgba(16,35,61,.07);
  --sh-lg:0 20px 44px rgba(16,35,61,.10);
  --sp:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","MiSans","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.78;
  color:var(--t-main);
  background:var(--bg);
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease-out,background-color .2s ease-out,border-color .2s ease-out}
a:hover{color:var(--c-primary-d)}
button,input,textarea,select{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{margin:0;line-height:1.30;font-weight:700;color:var(--t-main)}
h3,h4{font-weight:600}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em;padding-left:1.25em}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%}
.container-narrow{max-width:1000px}
.section{padding:96px 0}
.section-sm{padding:64px 0}

/* ---------- 浮动 Dock 导航 ---------- */
.site-dock{
  position:sticky;
  top:16px;
  z-index:90;
  width:min(1080px,calc(100% - 32px));
  margin:16px auto 0;
  transition:top .2s ease-out;
}
.dock-inner{
  position:relative;
  display:flex;
  align-items:center;
  gap:18px;
  padding:10px 14px 10px 20px;
  background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border:1px solid var(--border);
  border-radius:var(--r-pill);
  box-shadow:var(--sh-md);
  transition:box-shadow .2s ease-out,background-color .2s ease-out,padding .2s ease-out;
}
.site-dock.is-scrolled .dock-inner{
  padding:6px 14px 6px 20px;
  box-shadow:var(--sh-lg);
  background:rgba(255,255,255,.95);
}
.brand{display:inline-flex;align-items:center;gap:6px;flex:0 0 auto;font-weight:700;color:var(--t-main);letter-spacing:.2px}
.brand:hover{color:var(--t-main)}
.brand-mark{font-size:16.5px;font-weight:700;color:var(--c-primary)}
.brand-sep{color:var(--t-weak);font-weight:400}
.brand-sub{font-size:14.5px;font-weight:500;color:var(--t-sub)}
.dock-toggle{
  display:none;
  margin-left:auto;
  width:44px;height:44px;
  border:1px solid var(--border);
  border-radius:14px;
  background:#fff;
  cursor:pointer;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
  transition:background-color .2s ease-out,border-color .2s ease-out;
}
.dock-toggle span{display:block;width:18px;height:2px;background:var(--t-sub);border-radius:2px;transition:background-color .2s ease-out}
.dock-toggle:hover{border-color:var(--c-primary-l);background:var(--c-primary-l)}
.dock-toggle:hover span{background:var(--c-primary)}
.dock-panel{display:flex;align-items:center;justify-content:space-between;gap:24px;flex:1 1 auto;min-width:0}
.dock-nav{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.dock-nav a{
  position:relative;
  padding:8px 12px;
  font-size:15px;
  font-weight:500;
  color:var(--t-sub);
  border-radius:var(--r-pill);
  white-space:nowrap;
}
.dock-nav a:hover{color:var(--c-primary);background:var(--c-primary-l)}
.dock-nav a.active{color:var(--c-primary);font-weight:600}
.dock-nav a.active::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:3px;border-radius:3px;
  background:var(--c-primary);
}
.dock-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.dock-search{display:flex;align-items:center;gap:6px}
.dock-search input{
  width:0;
  height:38px;
  padding:0;
  border:1px solid var(--border);
  border-radius:var(--r-pill);
  background:#fff;
  color:var(--t-main);
  opacity:0;
  transition:width .2s ease-out,opacity .2s ease-out,padding .2s ease-out,border-color .2s ease-out;
}
.dock-search.is-open input{width:190px;padding:0 14px;opacity:1}
.dock-search input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 2px var(--c-primary-l)}
.icon-btn{
  width:40px;height:40px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--border);
  border-radius:var(--r-pill);
  background:#fff;
  color:var(--t-sub);
  cursor:pointer;
  transition:color .2s ease-out,border-color .2s ease-out,background-color .2s ease-out;
}
.icon-btn svg{width:20px;height:20px}
.icon-btn:hover{color:var(--c-primary);border-color:var(--c-primary-l);background:var(--c-primary-l)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;
  cursor:pointer;
  transition:transform .2s ease-out,box-shadow .2s ease-out,background-color .2s ease-out,color .2s ease-out,border-color .2s ease-out;
}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-sm)}
.btn-primary:hover{background:var(--c-primary-d);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-md)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-sm)}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary-l);color:var(--c-primary-d);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.65)}
.btn-light:hover{background:rgba(255,255,255,.14);color:#fff}
.btn-block{width:100%}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;
  font-size:12.5px;font-weight:500;line-height:1.4;
  border-radius:var(--r-badge);
  white-space:nowrap;
}
.badge-blue{background:rgba(31,95,196,.10);color:#174A9C}
.badge-teal{background:rgba(46,158,150,.12);color:#1E736D}
.badge-orange{background:rgba(228,102,58,.12);color:#B8481F}
.badge-soft{background:var(--c-primary-l);color:var(--c-primary-d)}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:var(--surface);border-bottom:1px solid var(--line)}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:16px 0;font-size:14px;color:var(--t-weak)}
.crumb a{color:var(--c-primary)}
.crumb a:hover{text-decoration:underline}
.crumb .sep{color:#B9C6D6}
.crumb .current{color:var(--t-sub);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章头部 ---------- */
.article-hero{background:var(--surface);padding:44px 0 40px;border-bottom:1px solid var(--line)}
.article-hero h1{font-size:clamp(28px,3.4vw,38px);letter-spacing:.2px;max-width:22ch}
.article-hero .lead{margin-top:16px;font-size:16.5px;color:var(--t-sub);max-width:62ch}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:20px;font-size:14px;color:var(--t-sub)}
.article-meta .dot{color:#C4D0E0}
.article-meta .item{display:inline-flex;align-items:center;gap:6px}

/* ---------- 文章主体布局 ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:56px;align-items:start;max-width:1120px;margin:0 auto}
.article-body{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--r-card);
  box-shadow:var(--sh-sm);
  padding:44px 46px;
  max-width:820px;
  font-size:16.5px;
  line-height:1.85;
  color:#23364D;
}
.article-body > *:first-child{margin-top:0}
.article-body h2{
  position:relative;
  font-size:24px;
  margin:40px 0 16px;
  padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:4px;background:var(--c-primary);
}
.article-body h3{font-size:20px;margin:30px 0 12px}
.article-body h4{font-size:17px;margin:22px 0 10px;color:var(--t-sub)}
.article-body p{margin:0 0 1.15em}
.article-body a{color:var(--c-primary);border-bottom:1px solid rgba(31,95,196,.35)}
.article-body a:hover{color:var(--c-primary-d);border-bottom-color:var(--c-primary-d)}
.article-body ul,.article-body ol{padding-left:1.4em;margin:0 0 1.2em}
.article-body li{margin-bottom:.5em;line-height:1.78}
.article-body ul li::marker{color:var(--c-primary)}
.article-body ol li::marker{color:var(--c-primary);font-weight:600}
.article-body blockquote{
  margin:22px 0;
  padding:20px 24px;
  border-left:4px solid var(--c-primary);
  background:#F8FAFE;
  border-radius:0 var(--r-img) var(--r-img) 0;
  color:var(--t-sub);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);margin:22px 0;width:100%}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;text-align:center;color:var(--t-weak);margin-top:10px}
.article-body hr{border:none;border-top:1px solid var(--line);margin:32px 0}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:14px;
  background:#F1F5FB;
  color:#23456F;
  padding:2px 6px;
  border-radius:6px;
}
.article-body pre{
  background:#F1F5FB;
  border:1px solid var(--line);
  border-radius:10px;
  padding:18px 20px;
  overflow:auto;
  font-size:14px;
  line-height:1.7;
}
.article-body pre code{background:none;padding:0}
.article-body .table-wrap{overflow-x:auto;margin:22px 0;border:1px solid var(--border);border-radius:var(--r-img)}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:0}
.article-body thead th{background:var(--c-primary-l);color:#174A9C;font-weight:600;text-align:left}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--line)}
.article-body tbody tr:last-child td{border-bottom:none}

/* ---------- 侧栏 ---------- */
.article-aside{position:sticky;top:112px;display:flex;flex-direction:column;gap:20px}
.aside-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--r-card);
  box-shadow:var(--sh-sm);
  padding:22px 20px;
}
.aside-card h4{font-size:15px;margin-bottom:14px;color:var(--t-main)}
.aside-list{list-style:none;margin:0;padding:0;font-size:14px;color:var(--t-sub)}
.aside-list li{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px dashed var(--line)}
.aside-list li:last-child{border-bottom:none}
.aside-list span:last-child{color:var(--t-main);font-weight:500;text-align:right}
.aside-card.deep{background:var(--surface-alt);border-color:#D9E6F8}
.aside-card.deep p{font-size:14px;color:var(--t-sub);margin-bottom:14px}

/* ---------- 空态 ---------- */
.article-empty{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--r-card);
  box-shadow:var(--sh-sm);
  padding:64px 32px;
  text-align:center;
}
.article-empty .empty-ico{
  width:88px;height:88px;margin:0 auto 20px;
  border-radius:50%;
  background:var(--c-primary-l);
  display:flex;align-items:center;justify-content:center;
  color:var(--c-primary);font-size:32px;
}
.article-empty h2{font-size:22px;margin-bottom:12px}
.article-empty p{color:var(--t-sub);margin-bottom:22px}

/* ---------- 标签与分享 ---------- */
.article-foot{margin-top:32px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-block;
  padding:5px 12px;
  font-size:13px;
  color:var(--t-sub);
  background:var(--surface-alt);
  border:1px solid var(--border);
  border-radius:var(--r-badge);
  transition:color .2s ease-out,border-color .2s ease-out,background-color .2s ease-out;
}
.tag:hover{color:var(--c-primary);border-color:var(--c-primary-l);background:var(--c-primary-l)}
.share-row{display:flex;align-items:center;gap:8px}
.share-row .icon-btn{background:var(--surface)}

/* ---------- 相关推荐 ---------- */
.related-section{background:var(--surface-alt);padding:72px 0}
.related-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:12px;margin-bottom:28px}
.related-head h2{font-size:26px}
.related-head p{color:var(--t-sub);font-size:15px;margin:8px 0 0}
.text-link{font-size:15px;font-weight:600;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px}
.text-link .arrow{transition:transform .2s ease-out}
.text-link:hover .arrow{transform:translateX(4px)}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.rcard{
  display:flex;flex-direction:column;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--r-card);
  box-shadow:var(--sh-sm);
  overflow:hidden;
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.rcard:hover{transform:translateY(-3px);box-shadow:var(--sh-md);border-color:var(--c-primary-l)}
.rcard .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--surface-alt)}
.rcard .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.rcard:hover .thumb img{transform:scale(1.03)}
.rcard .body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.rcard h3{font-size:17px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rcard h3 a{color:var(--t-main)}
.rcard h3 a:hover{color:var(--c-primary)}
.rcard p{font-size:14px;color:var(--t-sub);margin:0;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.rcard .meta{font-size:13px;color:var(--t-weak);display:flex;align-items:center;gap:6px;margin-top:auto}
.related-empty{
  background:var(--surface);
  border:1px dashed var(--border);
  border-radius:var(--r-card);
  padding:32px;
  text-align:center;
  color:var(--t-sub);
  font-size:15px;
}

/* ---------- 返回与翻页 ---------- */
.pager-section{padding:64px 0 80px}
.center-actions{display:flex;justify-content:center;margin-bottom:28px}
.pager-row{display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px;border-top:1px solid var(--border);padding-top:24px}
.pager-link{display:flex;flex-direction:column;gap:4px;font-size:15px;color:var(--t-sub);max-width:46%}
.pager-link:hover{color:var(--c-primary)}
.pager-link .label{font-size:13px;color:var(--t-weak)}
.pager-link.next{text-align:right;margin-left:auto}

/* ---------- 底部 CTA ---------- */
.cta-band{background:var(--surface-deep);color:#fff;padding:80px 0}
.cta-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:56px;align-items:center}
.cta-band h2{color:#fff;font-size:clamp(24px,2.8vw,32px)}
.cta-band p{color:#C7D6EA;margin:16px 0 24px;font-size:16px}
.cta-points{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:12px 24px}
.cta-points li{display:flex;align-items:center;gap:8px;font-size:14.5px;color:#C7D6EA}
.cta-points i{color:var(--c-accent)}
.cta-form{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-card);
  padding:28px;
}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:500;color:#DCE6F5;margin-bottom:8px}
.field input,.field textarea{
  width:100%;
  height:46px;
  padding:0 14px;
  border:1px solid transparent;
  border-radius:10px;
  background:#fff;
  color:var(--t-main);
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.field textarea{height:96px;padding:12px 14px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--t-weak)}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 2px rgba(31,95,196,.35)}
.form-note{font-size:13px;color:#9FB3CE;margin:12px 0 0}

/* ---------- 页脚 ---------- */
.site-footer{background:#F1F5FB;border-top:1px solid var(--border);padding:72px 0 0;color:var(--t-sub)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14.5px;line-height:1.75;color:var(--t-sub);max-width:38ch}
.footer-contact{margin-top:16px;font-size:14px}
.footer-contact p{margin:0 0 6px}
.footer-contact strong{color:var(--t-main);font-weight:600}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--t-main)}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:10px;font-size:14px}
.footer-col a{color:var(--t-sub);display:inline-block;transition:color .2s ease-out,transform .2s ease-out}
.footer-col a:hover{color:var(--c-primary);transform:translateX(2px)}
.footer-col span{color:var(--t-weak)}
.footer-bottom{
  margin-top:48px;
  border-top:1px solid var(--border);
  padding:22px 0;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13.5px;color:var(--t-weak);
}
.footer-bottom p{margin:0}
.footer-bottom .links{display:flex;flex-wrap:wrap;gap:18px}
.footer-bottom .links a{color:var(--t-weak)}
.footer-bottom .links a:hover{color:var(--c-primary)}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr) 236px;gap:36px}
  .article-body{padding:38px 34px}
}
@media (max-width:991px){
  .section{padding:72px 0}
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .article-aside{position:static;flex-direction:row;flex-wrap:wrap}
  .aside-card{flex:1 1 260px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-grid{grid-template-columns:minmax(0,1fr);gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:900px){
  .dock-toggle{display:inline-flex}
  .dock-inner{padding:8px 12px;border-radius:24px}
  .dock-panel{
    position:absolute;
    left:0;right:0;top:calc(100% + 10px);
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:14px;
    padding:16px;
    background:#fff;
    border:1px solid var(--border);
    border-radius:20px;
    box-shadow:var(--sh-lg);
    max-height:70vh;
    overflow-y:auto;
  }
  .dock-panel.is-open{display:flex}
  .dock-nav{flex-direction:column;align-items:stretch;gap:2px}
  .dock-nav a{padding:14px 12px;min-height:48px;display:flex;align-items:center;border-radius:12px;font-size:15.5px}
  .dock-nav a.active::after{display:none}
  .dock-nav a.active{background:var(--c-primary-l)}
  .dock-actions{flex-direction:column;align-items:stretch;gap:12px}
  .dock-search{width:100%}
  .dock-search input{width:100%;opacity:1;padding:0 14px}
  .dock-actions .btn{width:100%;min-height:48px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:48px 0}
  .site-dock{top:10px;width:calc(100% - 24px);margin-top:10px}
  .brand-sub{display:none}
  .article-hero{padding:32px 0 28px}
  .article-body{padding:26px 20px;font-size:16px}
  .article-body h2{font-size:21px;margin-top:32px}
  .article-body h3{font-size:18.5px}
  .related-section{padding:48px 0}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .cta-band{padding:56px 0}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .pager-link{max-width:100%}
  .pager-link.next{text-align:left;margin-left:0}
}
@media (max-width:480px){
  .article-hero h1{font-size:25px}
  .dock-inner{border-radius:20px}
  .article-meta{font-size:13px}
  .article-body{padding:22px 16px}
}

/* roulang page: category1 */
/* ========== 设计变量 ========== */
:root{
  --c-primary:#1F5FC4;
  --c-primary-d:#174A9C;
  --c-primary-l:#E7EFFC;
  --c-accent:#E4663A;
  --c-accent-l:#FDEDE6;
  --ink:#14202E;
  --ink-2:#4A5C72;
  --ink-3:#8595A8;
  --line:#E2E9F3;
  --line-2:#EDF2F8;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --surface-alt:#EEF4FC;
  --surface-deep:#10233D;
  --r-card:16px;
  --r-img:12px;
  --r-badge:6px;
  --r-pill:999px;
  --sh-sm:0 2px 8px rgba(16,35,61,.05);
  --sh-md:0 10px 24px rgba(16,35,61,.07);
  --sh-lg:0 20px 44px rgba(16,35,61,.10);
  --t:200ms ease-out;
}
/* ========== 基础重置 ========== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","MiSans","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.78;color:var(--ink);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
h1,h2,h3,h4{line-height:1.3;color:var(--ink);font-weight:700;letter-spacing:-.01em}
h3,h4{font-weight:600}
ul,ol{padding-left:0;list-style:none}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--c-primary-d)}
img{max-width:100%;display:block}
button{font-family:inherit;font-size:inherit}
input,textarea{font-family:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
::selection{background:var(--c-primary-l);color:var(--c-primary-d)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.reading{max-width:860px;margin:0 auto}
/* ========== 浮动 Dock 导航 ========== */
.site-dock{
  position:sticky;top:0;z-index:80;padding:16px 0 0;
  transition:padding var(--t);
}
.site-dock.is-scrolled{padding-top:10px}
.dock-inner{
  width:min(1080px,calc(100% - 32px));margin:0 auto;position:relative;
  display:flex;align-items:center;gap:18px;
  padding:10px 16px;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border:1px solid var(--line);border-radius:var(--r-pill);
  box-shadow:var(--sh-md);
  transition:box-shadow var(--t),background var(--t),padding var(--t);
}
.site-dock.is-scrolled .dock-inner{
  padding:6px 16px;background:rgba(255,255,255,.95);box-shadow:var(--sh-lg);
}
.brand{display:inline-flex;align-items:center;gap:7px;flex:0 0 auto;white-space:nowrap}
.brand-mark{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.brand-sep{color:var(--c-accent);font-weight:700}
.brand-sub{font-size:14px;color:var(--ink-2);font-weight:500}
.dock-toggle{
  display:none;flex:0 0 auto;margin-left:auto;
  width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-pill);
  background:#fff;cursor:pointer;padding:0 12px;
  flex-direction:column;justify-content:center;gap:4px;
}
.dock-toggle span{display:block;height:2px;background:var(--ink);border-radius:2px;transition:transform var(--t)}
.dock-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.dock-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.dock-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.dock-panel{display:flex;align-items:center;justify-content:space-between;flex:1;gap:18px;min-width:0}
.dock-nav{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.dock-nav a{
  position:relative;padding:9px 14px;border-radius:var(--r-pill);
  font-size:15px;font-weight:500;color:var(--ink-2);white-space:nowrap;
  transition:color var(--t),background var(--t);
}
.dock-nav a::after{
  content:"";position:absolute;left:50%;bottom:3px;transform:translateX(-50%) scaleX(0);
  width:18px;height:3px;border-radius:2px;background:var(--c-primary);transition:transform var(--t);
}
.dock-nav a:hover{color:var(--c-primary);background:var(--c-primary-l)}
.dock-nav a.active{color:var(--c-primary)}
.dock-nav a.active::after{transform:translateX(-50%) scaleX(1)}
.dock-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.dock-search{display:flex;align-items:center;gap:6px}
.icon-btn{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:var(--r-pill);background:#fff;color:var(--ink-2);
  cursor:pointer;transition:all var(--t);
}
.icon-btn svg{width:18px;height:18px}
.icon-btn:hover{color:var(--c-primary);border-color:var(--c-primary-l);background:var(--c-primary-l)}
.dock-search input[type="search"]{
  width:0;height:38px;padding:0;opacity:0;border:1px solid var(--line);border-radius:var(--r-pill);
  background:#fff;font-size:14px;color:var(--ink);transition:width var(--t),opacity var(--t),padding var(--t);
}
.dock-search input[type="search"]::placeholder{color:var(--ink-3)}
.dock-search.open input[type="search"]{width:170px;padding:0 14px;opacity:1}
.dock-search.open input[type="search"]:focus{outline:2px solid var(--c-primary);outline-offset:2px;border-color:var(--c-primary)}
/* ========== 按钮 ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);padding:12px 26px;border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;white-space:nowrap;
  transition:all var(--t);
}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-d);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-md)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-sm)}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary-l);color:var(--c-primary-d);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{padding:9px 18px;font-size:14px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px}
.link-arrow span{transition:transform var(--t)}
.link-arrow:hover{color:var(--c-primary-d)}
.link-arrow:hover span{transform:translateX(4px)}
/* ========== 徽章 / 标签 ========== */
.badge{
  display:inline-block;padding:4px 10px;border-radius:var(--r-badge);
  font-size:12.5px;font-weight:600;line-height:1.5;
}
.badge-blue{background:rgba(31,95,196,.10);color:#174A9C}
.badge-teal{background:rgba(46,158,150,.12);color:#1E736C}
.badge-orange{background:rgba(228,102,58,.12);color:#B84A24}
.badge-purple{background:rgba(106,90,205,.12);color:#4A3DA8}
/* ========== 面包屑 ========== */
.crumb-bar{background:#fff;border-bottom:1px solid var(--line)}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;padding:16px 0;font-size:14px;color:var(--ink-3)}
.crumb a{color:var(--c-primary)}
.crumb a:hover{color:var(--c-primary-d);text-decoration:underline}
.crumb .sep{color:var(--ink-3)}
.crumb .current{color:var(--ink-2)}
/* ========== 分类 Hero（窄幅） ========== */
.cat-hero{background:var(--surface-alt);border-bottom:1px solid var(--line);padding:56px 0 64px}
.cat-hero-grid{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);gap:48px;align-items:center}
.cat-hero h1{font-size:clamp(28px,4vw,40px);margin-bottom:18px}
.cat-hero .lede{font-size:17px;line-height:1.8;color:var(--ink-2);max-width:36em}
.cat-hero .hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}
.hero-figure{position:relative}
.hero-figure img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-card);
  box-shadow:var(--sh-lg);border:1px solid #fff;
}
/* ========== 分类主体：左目录 + 右内容流 ========== */
.cat-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:56px;padding:72px 0 80px}
.toc{position:sticky;top:110px;align-self:start}
.toc-title{font-size:13px;font-weight:600;letter-spacing:.12em;color:var(--ink-3);margin-bottom:14px}
.toc-list{display:flex;flex-direction:column;gap:4px}
.toc-list a{
  display:block;padding:10px 14px;font-size:15px;color:var(--ink-2);
  border-left:2px solid var(--line);border-radius:0 10px 10px 0;
  transition:all var(--t);
}
.toc-list a:hover{color:var(--c-primary);background:var(--c-primary-l);border-left-color:var(--c-primary-l)}
.toc-list a.active{color:var(--c-primary);font-weight:600;background:var(--c-primary-l);border-left-color:var(--c-primary)}
.toc-note{
  margin-top:22px;padding:18px;border:1px solid var(--line);border-radius:var(--r-card);
  background:#fff;box-shadow:var(--sh-sm);font-size:14px;color:var(--ink-2);line-height:1.7;
}
.toc-note strong{display:block;color:var(--ink);font-size:15px;margin-bottom:6px}
/* 内容流 */
.entry-intro{padding-bottom:8px}
.entry-intro h2{font-size:clamp(24px,3vw,30px);margin-bottom:14px}
.entry-intro p{color:var(--ink-2);max-width:44em}
.entry{
  padding:40px 0;border-bottom:1px solid var(--line);
  scroll-margin-top:120px;
}
.entry:last-of-type{border-bottom:1px solid var(--line)}
.entry-featured{
  margin-top:28px;padding:32px;background:#fff;border:1px solid #E9EFF8;
  border-radius:var(--r-card);box-shadow:var(--sh-md);
  border-bottom:1px solid #E9EFF8;
}
.entry-head{display:flex;align-items:flex-start;gap:16px;margin-bottom:18px}
.entry-num{
  flex:0 0 auto;font-size:30px;font-weight:700;line-height:1;color:var(--c-primary-l);
  letter-spacing:-.02em;padding-top:2px;
}
.entry-head h3{font-size:22px;margin-bottom:10px}
.entry-body{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.85fr);gap:36px;align-items:start}
.entry-body.no-figure{grid-template-columns:minmax(0,1fr)}
.entry-text p{color:var(--ink-2);margin-bottom:1.1em}
.entry-text p:last-child{margin-bottom:0}
.entry-text .link-arrow{margin-top:16px}
.entry-figure img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);
  border:1px solid var(--line);box-shadow:var(--sh-sm);
}
/* 要点清单 */
.point-list{display:flex;flex-direction:column;gap:12px;margin-top:6px}
.point-list li{position:relative;padding-left:22px;color:var(--ink-2)}
.point-list li::before{
  content:"";position:absolute;left:4px;top:.7em;width:7px;height:7px;border-radius:50%;
  background:var(--c-primary);
}
.point-list strong{color:var(--ink);font-weight:600}
/* ========== FAQ ========== */
.faq-section{background:var(--surface-alt);padding:80px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{margin-bottom:32px}
.section-head h2{font-size:clamp(24px,3vw,30px);margin-bottom:12px}
.section-head p{color:var(--ink-2);max-width:44em}
.faq-list{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-sm);overflow:hidden}
.faq-item+.faq-item{border-top:1px solid var(--line-2)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 24px 20px 21px;background:none;border:0;border-left:3px solid transparent;
  text-align:left;font-size:17px;font-weight:600;color:var(--ink);cursor:pointer;
  transition:background var(--t),border-color var(--t),color var(--t);
}
.faq-q:hover{background:#F8FAFE;color:var(--c-primary)}
.faq-item.open .faq-q{border-left-color:var(--c-primary);color:var(--c-primary)}
.faq-icon{position:relative;flex:0 0 16px;width:16px;height:16px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;transition:transform var(--t);
}
.faq-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-icon::after{left:7px;top:0;width:2px;height:16px}
.faq-item.open .faq-icon::after{transform:scaleY(0)}
.faq-a{display:none;padding:0 24px 22px;color:var(--ink-2);font-size:15.5px;line-height:1.8}
.faq-item.open .faq-a{display:block;animation:fadeIn 220ms ease-out}
.faq-a p{margin:0}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}
/* ========== 关联分类 + CTA 带 ========== */
.tail{padding:72px 0 88px}
.pill-links{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:36px}
.pill-links a{
  display:inline-flex;align-items:center;gap:8px;padding:10px 20px;
  border:1px solid var(--line);border-radius:var(--r-pill);background:#fff;
  font-size:14.5px;font-weight:500;color:var(--ink-2);box-shadow:var(--sh-sm);
  transition:all var(--t);
}
.pill-links a:hover{color:var(--c-primary);border-color:var(--c-primary-l);background:var(--c-primary-l);transform:translateY(-2px)}
.pill-links a.is-current{color:var(--c-primary);border-color:var(--c-primary);background:var(--c-primary-l);font-weight:600}
.cta-band{
  background:var(--c-primary-l);border:1px solid #D8E5FB;border-radius:24px;
  padding:48px;display:grid;grid-template-columns:minmax(0,1.4fr) auto;gap:32px;align-items:center;
}
.cta-band h2{font-size:clamp(22px,2.6vw,28px);margin-bottom:12px}
.cta-band p{color:var(--ink-2);max-width:38em}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
/* ========== 页脚 ========== */
.site-footer{background:#F1F5FB;border-top:1px solid var(--line);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14.5px;color:var(--ink-2);line-height:1.8;max-width:34em}
.footer-contact{margin-top:16px;font-size:14px;color:var(--ink-2)}
.footer-contact p{margin-bottom:6px}
.footer-contact strong{color:var(--ink);font-weight:600}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--ink)}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col li{font-size:14px;color:var(--ink-2)}
.footer-col a{color:var(--ink-2);display:inline-block;transition:all var(--t)}
.footer-col a:hover{color:var(--c-primary);transform:translateX(2px)}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13.5px;color:var(--ink-3)}
.footer-bottom .links{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom .links a{font-size:13.5px;color:var(--ink-2)}
.footer-bottom .links a:hover{color:var(--c-primary)}
/* ========== 响应式 ========== */
@media (max-width:1199px){
  .cat-layout{gap:40px}
}
@media (max-width:991px){
  .cat-hero{padding:44px 0 52px}
  .cat-hero-grid{grid-template-columns:minmax(0,1fr);gap:32px}
  .hero-figure{order:2}
  .cat-layout{grid-template-columns:minmax(0,1fr);gap:32px;padding:56px 0 64px}
  .toc{position:static}
  .toc-list{flex-direction:row;overflow-x:auto;gap:8px;padding-bottom:8px;-webkit-overflow-scrolling:touch}
  .toc-list a{border-left:0;border:1px solid var(--line);border-radius:var(--r-pill);white-space:nowrap;padding:9px 16px;background:#fff}
  .toc-list a.active{background:var(--c-primary-l);border-color:var(--c-primary)}
  .entry-body{grid-template-columns:minmax(0,1fr);gap:24px}
  .entry-featured{padding:24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{grid-template-columns:minmax(0,1fr);padding:36px}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .container{padding:0 20px}
  .dock-toggle{display:flex}
  .dock-panel{
    display:none;position:absolute;left:0;right:0;top:calc(100% + 10px);
    flex-direction:column;align-items:stretch;gap:16px;
    background:#fff;border:1px solid var(--line);border-radius:20px;
    padding:16px;box-shadow:var(--sh-lg);
  }
  .dock-panel.open{display:flex;animation:fadeIn 200ms ease-out}
  .dock-nav{flex-direction:column;align-items:stretch;gap:2px}
  .dock-nav a{padding:14px 16px;border-radius:12px;font-size:15.5px;min-height:48px;display:flex;align-items:center}
  .dock-nav a::after{display:none}
  .dock-nav a.active{background:var(--c-primary-l)}
  .dock-actions{flex-direction:column;align-items:stretch;gap:12px}
  .dock-search{width:100%}
  .dock-search input[type="search"],.dock-search.open input[type="search"]{width:100%;opacity:1;padding:0 16px;height:46px}
  .icon-btn{width:46px;height:46px}
  .dock-actions .btn{width:100%;min-height:48px}
  .faq-section{padding:56px 0}
  .cat-hero h1{margin-bottom:14px}
  .entry{padding:32px 0}
  .entry-head{gap:12px}
  .entry-num{font-size:24px}
  .entry-head h3{font-size:19px}
  .faq-q{padding:18px 18px 18px 16px;font-size:16px}
  .faq-a{padding:0 18px 20px}
  .tail{padding:56px 0 64px}
  .cta-band{padding:28px;border-radius:20px}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px}
}
@media (max-width:520px){
  .brand-sub{display:none}
  .brand-sep{display:none}
  .crumb{font-size:13px}
  .cat-hero{padding:36px 0 44px}
  .entry-featured{padding:20px}
}

/* roulang page: category2 */
:root{
  --c-primary:#1F5FC4;
  --c-primary-d:#174A9C;
  --c-primary-l:#E7EFFC;
  --c-accent:#E4663A;
  --c-accent-l:#FDEDE6;
  --c-teal:#2E9E96;
  --c-teal-l:#E6F5F4;
  --text:#14202E;
  --text-2:#4A5C72;
  --text-3:#8595A8;
  --line:#E2E9F3;
  --line-2:#EDF2F8;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --surface-alt:#EEF4FC;
  --surface-soft:#F8FAFE;
  --surface-deep:#10233D;
  --radius:16px;
  --radius-sm:12px;
  --radius-xs:6px;
  --radius-pill:999px;
  --sh-sm:0 2px 8px rgba(16,35,61,.05);
  --sh-md:0 10px 24px rgba(16,35,61,.07);
  --sh-lg:0 20px 44px rgba(16,35,61,.10);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","MiSans","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.78;
  color:var(--text);
  background:var(--bg);
}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease-out;}
a:hover{color:var(--c-primary-d);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.30;font-weight:700;color:var(--text);}
p{margin:0 0 1.15em;}
p:last-child{margin-bottom:0;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,textarea,select{font:inherit;color:inherit;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
::selection{background:var(--c-primary-l);color:var(--c-primary-d);}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- 导航 Dock ---------- */
.site-dock{
  position:sticky;
  top:12px;
  z-index:80;
  width:min(1080px,calc(100% - 32px));
  margin:16px auto 0;
}
.dock-inner{
  position:relative;
  display:flex;
  align-items:center;
  gap:16px;
  padding:12px 18px;
  border-radius:var(--radius-pill);
  background:rgba(255,255,255,.86);
  border:1px solid var(--line);
  box-shadow:var(--sh-md);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  transition:padding .2s ease-out,box-shadow .2s ease-out,background .2s ease-out;
}
.site-dock.is-scrolled .dock-inner{
  padding:9px 18px;
  background:rgba(255,255,255,.95);
  box-shadow:var(--sh-lg);
}
.brand{display:inline-flex;align-items:baseline;gap:6px;white-space:nowrap;}
.brand-mark{font-size:17px;font-weight:700;color:var(--text);letter-spacing:.2px;}
.brand-sep{color:var(--c-accent);font-weight:700;}
.brand-sub{font-size:13px;color:var(--text-3);font-weight:500;}
.dock-panel{flex:1;display:flex;align-items:center;justify-content:space-between;gap:14px;}
.dock-nav{display:flex;align-items:center;gap:4px;}
.dock-nav a{
  position:relative;
  padding:8px 14px;
  font-size:15px;
  font-weight:500;
  color:var(--text-2);
  border-radius:var(--radius-pill);
  transition:background .2s ease-out,color .2s ease-out;
}
.dock-nav a:hover{background:var(--c-primary-l);color:var(--c-primary-d);}
.dock-nav a.active{color:var(--c-primary);font-weight:600;}
.dock-nav a.active::after{
  content:"";
  position:absolute;
  left:50%;
  transform:translateX(-50%);
  bottom:2px;
  width:18px;
  height:3px;
  border-radius:2px;
  background:var(--c-primary);
}
.dock-actions{display:flex;align-items:center;gap:10px;}
.dock-search{position:relative;display:flex;align-items:center;}
.icon-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;height:38px;
  border-radius:var(--radius-pill);
  color:var(--text-2);
  border:1px solid transparent;
  transition:background .2s ease-out,color .2s ease-out,border-color .2s ease-out;
}
.icon-btn svg{width:20px;height:20px;}
.icon-btn:hover{background:var(--c-primary-l);color:var(--c-primary-d);border-color:var(--c-primary-l);}
.dock-search input{
  width:0;
  padding:0;
  border:0;
  height:38px;
  border-radius:var(--radius-pill);
  background:#fff;
  opacity:0;
  transition:width .22s ease-out,opacity .22s ease-out,padding .22s ease-out;
  font-size:14px;
}
.dock-search.is-open input{
  width:190px;
  padding:0 16px;
  opacity:1;
  border:1px solid var(--line);
}
.dock-search input::placeholder{color:var(--text-3);}
.dock-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:var(--radius-pill);
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
  border:1px solid var(--line);
  background:#fff;
}
.dock-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-2);transition:transform .2s ease-out,opacity .2s ease-out;}
.dock-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.dock-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.dock-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 26px;
  font-size:15.5px;
  font-weight:600;
  line-height:1;
  border-radius:var(--radius-pill);
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:background .2s ease-out,color .2s ease-out,box-shadow .2s ease-out,transform .2s ease-out,border-color .2s ease-out;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-sm);}
.btn-primary:hover{background:var(--c-primary-d);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-sm);}
.btn-outline{background:#fff;border-color:var(--c-primary);color:var(--c-primary);}
.btn-outline:hover{background:var(--c-primary-l);color:var(--c-primary-d);transform:translateY(-1px);}
.btn-outline:active{transform:translateY(0);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-lg{padding:15px 34px;font-size:17px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;color:var(--c-primary);}
.link-arrow em{font-style:normal;transition:transform .2s ease-out;}
.link-arrow:hover{color:var(--c-primary-d);text-decoration:underline;text-underline-offset:4px;}
.link-arrow:hover em{transform:translateX(4px);}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:var(--surface);border-bottom:1px solid var(--line-2);}
.crumb{display:flex;align-items:center;gap:8px;padding:16px 0;font-size:14px;color:var(--text-3);flex-wrap:wrap;}
.crumb a{color:var(--c-primary);}
.crumb a:hover{text-decoration:underline;text-underline-offset:3px;}
.crumb span.now{color:var(--text-2);}

/* ---------- 分类 Hero ---------- */
.cat-hero{
  position:relative;
  padding:96px 0 104px;
  background-image:linear-gradient(0deg,rgba(255,255,255,.66),rgba(255,255,255,.62)),url("/assets/images/coverpic/cover-5.png");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line-2);
}
.cat-hero-inner{max-width:760px;}
.badge{
  display:inline-block;
  padding:4px 10px;
  border-radius:var(--radius-xs);
  font-size:12.5px;
  font-weight:600;
  line-height:1.6;
}
.badge-teal{background:var(--c-teal-l);color:#1F7A74;}
.cat-hero h1{
  margin:18px 0 16px;
  font-size:clamp(28px,4vw,40px);
  font-weight:700;
  letter-spacing:.3px;
}
.cat-hero .hero-desc{font-size:17px;color:var(--text-2);max-width:620px;margin-bottom:28px;}
.hero-note{display:flex;align-items:center;gap:10px;margin-top:18px;font-size:14px;color:var(--text-3);}
.hero-note i{display:block;width:6px;height:6px;border-radius:50%;background:var(--c-accent);}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section-alt{background:var(--surface-alt);}
.section-head{max-width:720px;margin-bottom:52px;}
.section-head h2{font-size:clamp(24px,3vw,30px);margin-bottom:14px;}
.section-head p{color:var(--text-2);font-size:16.5px;}
.eyebrow{display:inline-block;font-size:13px;font-weight:600;letter-spacing:1px;color:var(--c-primary);margin-bottom:12px;}

/* ---------- 图文交替 ---------- */
.alt-row{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;}
.alt-row + .alt-row{margin-top:80px;}
.alt-row.is-reverse .alt-media{order:2;}
.alt-media{
  border-radius:var(--radius-sm);
  overflow:hidden;
  box-shadow:var(--sh-md);
  border:1px solid #E9EFF8;
  background:#fff;
}
.alt-media img{width:100%;aspect-ratio:16 / 10;object-fit:cover;}
.alt-body h3{font-size:22px;margin-bottom:14px;}
.alt-body p{color:var(--text-2);font-size:16px;}
.check-list{margin-top:20px;display:grid;gap:10px;}
.check-list li{position:relative;padding-left:30px;font-size:15.5px;color:var(--text-2);line-height:1.7;}
.check-list li::before{
  content:"";position:absolute;left:0;top:5px;width:18px;height:18px;border-radius:6px;background:var(--c-primary-l);
}
.check-list li::after{
  content:"";position:absolute;left:5px;top:9px;width:8px;height:4px;
  border-left:2px solid var(--c-primary);border-bottom:2px solid var(--c-primary);
  transform:rotate(-45deg);
}

/* ---------- 数据带 ---------- */
.stats-band{background:var(--surface-alt);padding:64px 0;}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center;}
.stat-num{font-size:36px;font-weight:700;color:var(--c-accent);line-height:1.2;}
.stat-num small{font-size:15px;font-weight:600;margin-left:4px;}
.stat-label{font-size:14px;color:var(--text-2);margin-top:8px;line-height:1.7;}

/* ---------- 小卡网格 ---------- */
.mini-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.mini-card{
  background:var(--surface);
  border:1px solid #E9EFF8;
  border-radius:var(--radius);
  padding:30px 28px;
  box-shadow:var(--sh-sm);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.mini-card:hover,.mini-card:focus-within{transform:translateY(-3px);box-shadow:var(--sh-md);border-color:var(--c-primary-l);}
.mini-ico{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;
  background:var(--c-primary-l);color:var(--c-primary);margin-bottom:16px;
}
.mini-ico svg{width:24px;height:24px;}
.mini-card h3{font-size:18px;font-weight:600;margin-bottom:8px;}
.mini-card p{font-size:15px;color:var(--text-2);margin:0;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  position:relative;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  width:100%;
  padding:20px 10px 20px 18px;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--text);
  transition:color .2s ease-out;
}
.faq-q:hover{color:var(--c-primary);}
.faq-q::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:2px;
  background:var(--c-primary);opacity:0;transition:opacity .2s ease-out;
}
.faq-item.is-open .faq-q::before{opacity:1;}
.faq-ico{position:relative;width:16px;height:16px;flex:0 0 16px;}
.faq-ico::before,.faq-ico::after{content:"";position:absolute;background:var(--c-primary);border-radius:2px;}
.faq-ico::before{left:0;right:0;top:7px;height:2px;}
.faq-ico::after{top:0;bottom:0;left:7px;width:2px;transition:transform .22s ease-out,opacity .22s ease-out;}
.faq-item.is-open .faq-ico::after{transform:scaleY(0);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease-out;}
.faq-a-inner{
  margin:0 0 20px 18px;
  padding:18px 22px;
  background:var(--surface-soft);
  border-radius:var(--radius-sm);
  color:var(--text-2);
  font-size:15.5px;
}
.faq-item.is-open .faq-a{max-height:420px;}

/* ---------- 结尾 CTA ---------- */
.final-cta{background:var(--c-primary-l);padding:84px 0;text-align:center;}
.final-cta h2{font-size:clamp(24px,3vw,30px);margin-bottom:16px;}
.final-cta p{max-width:620px;margin:0 auto 30px;color:var(--text-2);font-size:16.5px;}
.final-cta .cta-hint{margin-top:18px;font-size:14px;color:var(--text-3);}

/* ---------- 页脚 ---------- */
.site-footer{background:#F1F5FB;border-top:1px solid var(--line);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:48px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14.5px;color:var(--text-2);max-width:340px;}
.footer-contact{margin-top:18px;}
.footer-contact p{font-size:14px;color:var(--text-2);margin-bottom:6px;}
.footer-contact strong{color:var(--text);font-weight:600;}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:16px;color:var(--text);}
.footer-col ul{display:grid;gap:10px;}
.footer-col li a,.footer-col li span{font-size:14px;color:var(--text-2);transition:color .2s ease-out,transform .2s ease-out;display:inline-block;}
.footer-col li a:hover{color:var(--c-primary);transform:translateX(2px);}
.footer-bottom{
  margin-top:56px;
  border-top:1px solid var(--line);
  padding:22px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:var(--text-3);margin:0;}
.footer-bottom .links{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom .links a{font-size:13px;color:var(--text-2);}
.footer-bottom .links a:hover{color:var(--c-primary);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .section{padding:80px 0;}
  .alt-row{gap:48px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:36px;}
}
@media (max-width:991px){
  .section{padding:72px 0;}
  .cat-hero{padding:80px 0 84px;}
  .alt-row{grid-template-columns:1fr;gap:28px;}
  .alt-row + .alt-row{margin-top:64px;}
  .alt-row.is-reverse .alt-media{order:0;}
  .stats-band{padding:56px 0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:860px){
  .dock-toggle{display:inline-flex;}
  .brand-sub{display:none;}
  .dock-panel{
    display:none;
    position:absolute;
    left:0;right:0;
    top:calc(100% + 10px);
    flex-direction:column;
    align-items:stretch;
    gap:14px;
    padding:16px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:20px;
    box-shadow:var(--sh-lg);
  }
  .dock-panel.is-open{display:flex;}
  .dock-nav{flex-direction:column;align-items:stretch;gap:2px;}
  .dock-nav a{min-height:48px;display:flex;align-items:center;padding:0 14px;font-size:16px;}
  .dock-nav a.active::after{left:14px;transform:none;bottom:12px;width:14px;}
  .dock-actions{flex-direction:column;align-items:stretch;gap:12px;}
  .dock-search{width:100%;}
  .dock-search input{width:100%;opacity:1;padding:0 16px;border:1px solid var(--line);}
  .dock-search.is-open input{width:100%;}
  .icon-btn{display:none;}
  .dock-actions .btn{width:100%;min-height:48px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .cat-hero{padding:64px 0 68px;}
  .cat-hero .hero-desc{font-size:16px;}
  .section-head{margin-bottom:36px;}
  .mini-grid{grid-template-columns:1fr;}
  .mini-card{padding:24px 22px;}
  .alt-body h3{font-size:20px;}
  .final-cta{padding:60px 0;}
  .site-footer{padding-top:56px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px;}
}
@media (max-width:520px){
  .stats-grid{grid-template-columns:1fr;gap:28px;}
  .stat-num{font-size:30px;}
  .faq-q{font-size:16px;padding:18px 6px 18px 14px;}
  .faq-a-inner{margin-left:14px;padding:16px 16px;}
}
@media (max-width:480px){
  .btn{width:100%;}
  .cat-hero .btn,.final-cta .btn{width:100%;}
}