/* roulang page: index */
:root{
  --brand-600:#1A5FD0;
  --brand-500:#2C7BE5;
  --brand-100:#DCE9FC;
  --brand-50:#EDF3FE;
  --support-500:#12A594;
  --support-50:#E6F6F3;
  --accent-500:#F5A524;
  --accent-50:#FEF3E2;
  --ink-900:#0F1B2D;
  --ink-700:#24344D;
  --ink-600:#475569;
  --ink-400:#94A3B8;
  --bg:#F4F7FB;
  --surface:#FFFFFF;
  --line:#E3E9F2;
  --imgph:#E8EEF7;
  --radius-card:16px;
  --radius-panel:20px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:96px;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  background:var(--bg);
  color:var(--ink-900);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{list-style:none;padding:0;}

.site-container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}

/* ===== 头部导航 ===== */
#siteHeader{
  position:sticky;top:0;z-index:70;
  background:rgba(255,255,255,.86);
  backdrop-filter:saturate(180%) blur(12px);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid transparent;
  transition:background .28s ease,box-shadow .28s ease,border-color .28s ease;
}
#siteHeader.scrolled{
  background:rgba(255,255,255,.97);
  border-bottom-color:var(--line);
  box-shadow:0 4px 18px rgba(15,27,45,.06);
}
.logo-mark{
  flex:none;width:40px;height:40px;border-radius:13px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,#2C7BE5 0%,#1A5FD0 100%);
  color:#fff;font-size:19px;font-weight:800;
  box-shadow:0 6px 14px rgba(26,95,208,.28);
}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  padding:10px 12px;
  font-size:14.5px;font-weight:500;color:var(--ink-600);
  border-radius:10px;
  transition:color .2s ease,background .2s ease;
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  border-radius:2px;background:var(--brand-600);
  transform:scaleX(0);transform-origin:center;
  transition:transform .22s ease;
}
.nav-link:hover{color:var(--ink-900);background:var(--brand-50);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand-600);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;
  font-size:15px;font-weight:600;line-height:1;
  border-radius:12px;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn i{font-size:13px;transition:transform .2s ease;}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 6px 16px rgba(26,95,208,.24);}
.btn-primary:hover{background:#1550B4;color:#fff;transform:translateY(-1px);box-shadow:0 12px 24px rgba(26,95,208,.30);}
.btn-primary:hover i{transform:translateX(2px);}
.btn-primary:active{transform:translateY(0);box-shadow:0 2px 6px rgba(26,95,208,.22);}
.btn-ghost{background:#fff;color:var(--brand-600);border-color:var(--brand-100);}
.btn-ghost:hover{background:var(--brand-50);border-color:var(--brand-500);color:var(--brand-600);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{height:42px;padding:0 18px;font-size:14px;border-radius:10px;}
.btn-pill{border-radius:999px;height:46px;padding:0 24px;}
.btn-pill-sm{border-radius:999px;height:42px;padding:0 20px;font-size:14px;}
.btn-block{width:100%;}
.btn:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;}
.btn[disabled]{opacity:.5;box-shadow:none;cursor:not-allowed;transform:none;}

/* ===== 徽章与标签 ===== */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:28px;padding:0 12px;border-radius:999px;
  font-size:12.5px;font-weight:600;line-height:1;
}
.badge-brand{background:var(--brand-50);color:var(--brand-600);}
.badge-support{background:var(--support-50);color:var(--support-500);}
.badge-accent{background:var(--accent-50);color:#B47407;}
.badge-ink{background:#EEF2F8;color:var(--ink-600);}
.dot-live{
  width:7px;height:7px;border-radius:50%;background:var(--support-500);
  box-shadow:0 0 0 3px rgba(18,165,148,.18);
  animation:pulse 2s infinite;
}
@keyframes pulse{
  0%,100%{box-shadow:0 0 0 3px rgba(18,165,148,.18);}
  50%{box-shadow:0 0 0 6px rgba(18,165,148,.05);}
}

/* ===== 首屏 ===== */
.hero-section{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#EDF3FE 0%,#F4F7FB 100%);
}
.hero-mesh{
  position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(26,95,208,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(26,95,208,.05) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 30% 35%,#000 0%,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 30% 35%,#000 0%,transparent 72%);
}
.hero-blob{
  position:absolute;border-radius:50%;filter:blur(6px);pointer-events:none;
}
.hero-blob.b1{width:300px;height:300px;right:-90px;top:-80px;background:rgba(44,123,229,.06);}
.hero-blob.b2{width:200px;height:200px;left:-60px;bottom:-70px;background:rgba(18,165,148,.06);}

.hero-title{
  font-size:clamp(30px,4.4vw,50px);
  line-height:1.25;
  font-weight:800;
  letter-spacing:-0.01em;
  color:var(--ink-900);
}
.hero-sub{
  margin-top:20px;
  font-size:17px;line-height:1.85;color:var(--ink-600);
  max-width:560px;
}
.trust-line{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px 14px;
  margin-top:26px;font-size:13.5px;color:var(--ink-400);
}
.trust-line .sep{width:4px;height:4px;border-radius:50%;background:#CBD5E1;}

.hero-visual{position:relative;}
.hero-figure{
  border-radius:20px;overflow:hidden;background:var(--imgph);
  box-shadow:0 18px 48px rgba(15,27,45,.16),0 0 0 1px rgba(255,255,255,.6);
  aspect-ratio:4/3;
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.floating-card{
  position:absolute;top:18px;right:-6px;
  background:rgba(255,255,255,.97);
  border:1px solid var(--line);
  border-radius:14px;
  padding:12px 16px;
  box-shadow:0 12px 30px rgba(15,27,45,.12);
  min-width:150px;
}
.floating-card .fc-label{font-size:11.5px;color:var(--ink-400);}
.floating-card .fc-value{font-size:16px;font-weight:800;color:var(--ink-900);margin-top:2px;}

/* ===== 数据条 ===== */
.trust-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;
  box-shadow:0 2px 6px rgba(15,27,45,.04),0 12px 28px rgba(15,27,45,.06);
}
.trust-item{padding:28px 26px;border-right:1px solid var(--line);}
.trust-item:last-child{border-right:0;}
.trust-num{font-size:34px;font-weight:800;line-height:1.15;color:var(--ink-900);letter-spacing:-0.01em;}
.trust-num small{font-size:15px;font-weight:700;margin-left:4px;color:var(--brand-600);}
.trust-label{margin-top:8px;font-size:13.5px;color:var(--ink-400);line-height:1.6;}

/* ===== 时间线 ===== */
.timeline{display:grid;grid-template-columns:repeat(5,1fr);gap:22px;position:relative;}
.timeline::before{
  content:"";position:absolute;top:5px;left:2%;right:2%;height:2px;background:var(--line);
}
.timeline-node{position:relative;padding-top:34px;}
.timeline-dot{
  position:absolute;top:0;left:0;width:12px;height:12px;border-radius:50%;
  background:var(--brand-600);box-shadow:0 0 0 4px var(--brand-100);
}
.timeline-node.is-first .timeline-dot{background:var(--accent-500);box-shadow:0 0 0 4px var(--accent-50);}
.timeline-time{
  font-size:12.5px;font-weight:700;color:var(--brand-600);
  letter-spacing:0;margin-bottom:6px;
}
.timeline-node h3{font-size:16px;font-weight:700;color:var(--ink-900);line-height:1.5;}
.timeline-node p{margin-top:6px;font-size:13.5px;color:var(--ink-600);line-height:1.7;}

/* ===== 错位功能网格 ===== */
.feature-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:22px;}
.feature-card{
  grid-column:span 5;
  background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;
  box-shadow:0 2px 6px rgba(15,27,45,.04),0 12px 28px rgba(15,27,45,.06);
  transition:border-color .25s ease,box-shadow .25s ease,transform .25s ease;
  display:flex;flex-direction:column;
}
.feature-card:hover{border-color:var(--brand-100);box-shadow:0 6px 16px rgba(15,27,45,.08),0 20px 40px rgba(15,27,45,.10);transform:translateY(-3px);}
.feature-card.span-7{grid-column:span 7;}
.feature-media{aspect-ratio:16/10;background:var(--imgph);overflow:hidden;}
.feature-card.span-7 .feature-media{aspect-ratio:16/9;}
.feature-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.feature-card:hover .feature-media img{transform:scale(1.04);}
.feature-body{padding:22px 24px 26px;flex:1;}
.feature-body h3{margin-top:12px;font-size:19px;font-weight:700;color:var(--ink-900);line-height:1.45;}
.feature-body p{margin-top:10px;font-size:14.5px;color:var(--ink-600);line-height:1.8;}

/* ===== 参与方式对比 ===== */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;}
.plan-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:20px;
  padding:30px 26px 28px;
  box-shadow:0 2px 6px rgba(15,27,45,.04),0 12px 28px rgba(15,27,45,.06);
  transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
  display:flex;flex-direction:column;
}
.plan-card:hover{box-shadow:0 6px 16px rgba(15,27,45,.08),0 20px 40px rgba(15,27,45,.10);}
.plan-card.recommended{
  transform:translateY(-8px);
  border-color:var(--brand-100);
  overflow:hidden;
  box-shadow:0 10px 30px rgba(26,95,208,.14),0 20px 44px rgba(15,27,45,.10);
}
.plan-card.recommended::before{
  content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--brand-600);
}
.plan-flag{
  position:absolute;top:18px;right:18px;
  background:var(--accent-500);color:var(--ink-900);
  font-size:12px;font-weight:700;line-height:1;
  padding:5px 10px;border-radius:999px;
}
.plan-name{font-size:16px;font-weight:700;color:var(--ink-900);}
.plan-desc{margin-top:6px;font-size:13.5px;color:var(--ink-400);min-height:22px;}
.plan-price{margin-top:18px;display:flex;align-items:baseline;gap:6px;}
.plan-price .num{font-size:38px;font-weight:800;line-height:1;color:var(--ink-900);letter-spacing:-0.02em;}
.plan-price .unit{font-size:13.5px;color:var(--ink-400);}
.plan-divider{height:1px;background:var(--line);margin:22px 0 18px;}
.plan-list{display:flex;flex-direction:column;gap:12px;margin-bottom:26px;flex:1;}
.plan-list li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--ink-700);line-height:1.65;}
.plan-list li.off{color:var(--ink-400);opacity:.75;}
.tick,.cross{
  flex:none;width:19px;height:19px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:11px;font-weight:700;margin-top:3px;
}
.tick{background:var(--support-50);color:var(--support-500);}
.cross{background:#EEF2F8;color:var(--ink-400);}

/* ===== 报名区 ===== */
.signup-panel{
  background:linear-gradient(135deg,rgba(26,95,208,.07) 0%,rgba(18,165,148,.05) 100%);
  border:1px solid var(--brand-100);
  border-radius:20px;
  padding:44px;
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;
}
.signup-points{display:flex;flex-direction:column;gap:14px;margin-top:26px;}
.signup-points li{display:flex;gap:10px;font-size:14.5px;color:var(--ink-700);line-height:1.7;}
.signup-points i{color:var(--support-500);font-size:14px;margin-top:5px;flex:none;}
.form-card{
  background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:28px;box-shadow:0 2px 6px rgba(15,27,45,.04),0 12px 28px rgba(15,27,45,.06);
}
.field{margin-bottom:14px;}
.field > label{
  display:block;margin-bottom:7px;
  font-size:13.5px;font-weight:600;color:var(--ink-700);
}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;
  border:1px solid var(--line);border-radius:10px;background:#fff;
  font-size:15px;color:var(--ink-900);
  transition:border-color .2s ease,box-shadow .2s ease;
  appearance:none;
}
.field textarea{height:auto;min-height:88px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px var(--brand-50);
}
.field select{
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%2394A3B8' d='M6 8 0 0h12z'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;padding-right:36px;
}
.field .err{display:none;margin-top:6px;font-size:13px;color:#D92D20;}
.field.invalid input,.field.invalid select{border-color:#D92D20;}
.field.invalid .err{display:block;}
.check-row{display:flex;align-items:flex-start;gap:9px;margin:16px 0 18px;}
.check-row input{width:16px;height:16px;margin-top:4px;flex:none;accent-color:#1A5FD0;}
.check-row label{font-size:13px;color:var(--ink-600);line-height:1.65;}
.check-row a{color:var(--brand-600);text-decoration:underline;}
.form-success{
  display:none;margin-top:14px;padding:12px 14px;
  background:var(--support-50);border:1px solid #BFE9E2;border-radius:10px;
  font-size:13.5px;color:#0B7A6E;
}
.form-success.show{display:block;}

/* ===== 资讯列表 ===== */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;}
.section-head h2{font-size:clamp(24px,3vw,32px);font-weight:800;line-height:1.3;color:var(--ink-900);letter-spacing:-0.01em;}
.section-head p{margin-top:10px;font-size:15px;color:var(--ink-600);max-width:640px;line-height:1.8;}
.more-link{font-size:14.5px;font-weight:600;color:var(--brand-600);display:inline-flex;align-items:center;gap:6px;}
.more-link i{transition:transform .2s ease;}
.more-link:hover i{transform:translateX(3px);}

.post-list{display:grid;grid-template-columns:1fr;gap:18px;margin-top:34px;}
.post-card{
  display:grid;grid-template-columns:1fr 280px;gap:26px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:22px 24px;
  box-shadow:0 2px 6px rgba(15,27,45,.04),0 12px 28px rgba(15,27,45,.06);
  transition:border-color .25s ease,box-shadow .25s ease,transform .25s ease;
}
.post-card:hover{border-color:var(--brand-100);box-shadow:0 6px 16px rgba(15,27,45,.08),0 20px 40px rgba(15,27,45,.10);transform:translateY(-2px);}
.post-cat{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  background:var(--brand-50);color:var(--brand-600);font-size:12px;font-weight:600;
}
.post-title{
  margin-top:10px;font-size:18px;font-weight:700;line-height:1.5;color:var(--ink-900);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-excerpt{
  margin-top:8px;font-size:14px;line-height:1.8;color:var(--ink-600);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{margin-top:12px;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-400);}
.post-meta .arrow{margin-left:auto;color:var(--brand-500);transition:transform .2s ease;}
.post-card:hover .post-meta .arrow{transform:translateX(3px);}
.post-thumb{aspect-ratio:16/9;border-radius:12px;overflow:hidden;background:var(--imgph);}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.post-card:hover .post-thumb img{transform:scale(1.05);}

.empty-state{
  margin-top:34px;background:#fff;border:1px dashed #CBD8E8;border-radius:16px;
  min-height:180px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:12px;text-align:center;padding:30px 20px;
}
.empty-state .icon{
  width:48px;height:48px;border-radius:14px;background:var(--brand-50);color:var(--brand-500);
  display:flex;align-items:center;justify-content:center;font-size:20px;
}
.empty-state p{font-size:14.5px;color:var(--ink-400);}

/* ===== FAQ ===== */
.faq-wrap{max-width:880px;margin:0 auto;}
.faq-card{
  background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;
  box-shadow:0 2px 6px rgba(15,27,45,.04),0 12px 28px rgba(15,27,45,.06);
  margin-top:34px;
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;background:none;border:0;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--ink-900);cursor:pointer;
  transition:background .2s ease;
}
.faq-q:hover{background:var(--brand-50);}
.faq-q:focus-visible{outline:2px solid var(--brand-500);outline-offset:-2px;}
.faq-icon{position:relative;flex:none;width:22px;height:22px;transition:transform .2s ease;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand-600);border-radius:2px;}
.faq-icon::before{left:4px;right:4px;top:10px;height:2px;}
.faq-icon::after{top:4px;bottom:4px;left:10px;width:2px;transition:opacity .2s ease;}
.faq-item.open .faq-icon::after{opacity:0;}
.faq-item.open .faq-icon{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease;}
.faq-a-inner{padding:0 24px 20px;font-size:14.5px;line-height:1.85;color:var(--ink-600);background:rgba(244,247,251,.7);}

/* ===== CTA 条 ===== */
.cta-bar{
  background:var(--ink-900);border-radius:20px;
  padding:38px 44px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-bar h2{font-size:clamp(20px,2.6vw,26px);font-weight:800;line-height:1.4;color:#fff;}
.cta-bar p{margin-top:10px;font-size:14.5px;color:#94A3B8;line-height:1.75;max-width:620px;}

/* ===== 页脚 ===== */
.site-footer{background:var(--ink-900);color:#94A3B8;margin-top:0;}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;
  padding:64px 0 40px;
}
.footer-brand .name{color:#fff;font-size:16.5px;font-weight:800;}
.footer-brand p{margin-top:14px;font-size:13.5px;line-height:1.85;color:#94A3B8;max-width:300px;}
.footer-col h4{color:#E2E8F0;font-size:14px;font-weight:700;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:#94A3B8;transition:color .2s ease;}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:22px 0 30px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#64748B;
}
.socials{display:flex;gap:10px;margin-top:18px;}
.socials a{
  width:34px;height:34px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.06);color:#94A3B8;font-size:14px;
  transition:background .2s ease,color .2s ease;
}
.socials a:hover{background:var(--brand-600);color:#fff;}

/* ===== 移动端抽屉 ===== */
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,27,45,.42);
  opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;z-index:90;
}
.drawer-mask.show{opacity:1;visibility:visible;}
.drawer-panel{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;
  background:#fff;z-index:91;
  transform:translateX(100%);
  transition:transform .3s cubic-bezier(.4,0,.2,1);
  padding:22px 22px 28px;
  display:flex;flex-direction:column;
  overflow-y:auto;
}
.drawer-panel.show{transform:translateX(0);}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 12px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--ink-700);
  transition:background .2s ease,color .2s ease;
}
.drawer-link:hover,.drawer-link.active{background:var(--brand-50);color:var(--brand-600);font-weight:600;}
.drawer-close{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;
  display:flex;align-items:center;justify-content:center;color:var(--ink-600);cursor:pointer;
  transition:background .2s ease,border-color .2s ease;
}
.drawer-close:hover{background:var(--bg);border-color:#CBD8E8;}

/* ===== 响应式 ===== */
@media (max-width:1024px){
  .feature-grid{grid-template-columns:repeat(6,1fr);}
  .feature-card,.feature-card.span-7{grid-column:span 3;}
  .signup-panel{grid-template-columns:1fr;gap:34px;padding:34px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;padding:52px 0 34px;}
}
@media (max-width:768px){
  .trust-grid{grid-template-columns:repeat(2,1fr);}
  .trust-item:nth-child(2){border-right:0;}
  .trust-item:nth-child(1),.trust-item:nth-child(2){border-bottom:1px solid var(--line);}
  .trust-item{padding:22px 20px;}
  .trust-num{font-size:30px;}

  .timeline{grid-template-columns:1fr;gap:0;}
  .timeline::before{display:none;}
  .timeline-node{padding:0 0 26px 26px;border-left:2px solid var(--line);margin-left:5px;}
  .timeline-node:last-child{border-left-color:transparent;padding-bottom:0;}
  .timeline-dot{top:6px;left:-7px;}

  .feature-grid{grid-template-columns:1fr;}
  .feature-card,.feature-card.span-7{grid-column:span 1;}

  .plan-grid{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:10px;-webkit-overflow-scrolling:touch;}
  .plan-card{min-width:80%;scroll-snap-align:center;}
  .plan-card.recommended{transform:none;}

  .post-card{grid-template-columns:1fr;gap:18px;padding:20px;}
  .post-thumb{order:-1;}

  .cta-bar{padding:28px 24px;flex-direction:column;align-items:flex-start;}
  .cta-bar .btn{width:100%;}

  .hero-figure{aspect-ratio:16/10;}
  .floating-card{top:12px;right:12px;padding:10px 13px;min-width:132px;}
}
@media (max-width:640px){
  .site-container{padding-left:16px;padding-right:16px;}
  .signup-panel{padding:24px 18px;}
  .form-card{padding:22px 18px;}
  .faq-q{padding:18px 18px;font-size:15.5px;}
  .faq-a-inner{padding:0 18px 18px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:44px 0 28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}

/* roulang page: article */
:root{
    --brand-50:#EDF3FE; --brand-100:#DCE9FC; --brand-500:#2C7BE5; --brand-600:#1A5FD0; --brand-700:#164BA6;
    --support-50:#E6F6F3; --support-500:#12A594; --support-600:#0E8779;
    --accent-50:#FEF3E2; --accent-500:#F5A524;
    --ink-900:#0F1B2D; --ink-700:#24344D; --ink-600:#475569; --ink-400:#94A3B8;
    --bg:#F4F7FB; --surface:#FFFFFF; --line:#E3E9F2; --ph:#E8EEF7;
    --r-card:16px; --r-panel:20px; --r-btn:12px; --r-input:10px;
    --sh-card:0 2px 6px rgba(15,27,45,.04), 0 12px 28px rgba(15,27,45,.06);
    --sh-lift:0 6px 16px rgba(15,27,45,.08), 0 20px 40px rgba(15,27,45,.10);
    --sec-y:88px;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;background:var(--bg);color:var(--ink-700);
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",sans-serif;
    font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button,input,select,textarea{font:inherit;color:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}
  ::selection{background:var(--brand-100);color:var(--ink-900);}

  .site-container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
  .section{padding:var(--sec-y) 0;}
  .section-tight{padding:calc(var(--sec-y) * .66) 0;}

  /* ---------- header ---------- */
  #siteHeader{
    position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);
    backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:.25s ease;
  }
  #siteHeader.is-scrolled{background:#fff;border-bottom-color:var(--line);box-shadow:0 2px 14px rgba(15,27,45,.06);}
  .logo-mark{
    width:38px;height:38px;border-radius:11px;background:var(--brand-600);color:#fff;
    display:inline-flex;align-items:center;justify-content:center;font-size:18px;font-weight:800;
    flex:0 0 auto;box-shadow:0 6px 14px rgba(26,95,208,.22);
  }
  .nav-link{
    position:relative;display:inline-flex;align-items:center;padding:8px 14px;border-radius:10px;
    font-size:15px;font-weight:600;color:var(--ink-600);transition:.2s ease;
  }
  .nav-link:hover{color:var(--ink-900);background:var(--brand-50);}
  .nav-link.active{color:var(--brand-600);}
  .nav-link.active::after{
    content:"";position:absolute;left:14px;right:14px;bottom:-2px;height:2px;border-radius:2px;background:var(--brand-600);
  }

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;
    font-weight:700;border-radius:var(--r-btn);cursor:pointer;white-space:nowrap;
    transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,border-color .18s ease,color .18s ease;
  }
  .btn-sm{height:40px;padding:0 16px;font-size:14px;}
  .btn-md{height:46px;padding:0 22px;font-size:15px;}
  .btn-lg{height:52px;padding:0 28px;font-size:16px;}
  .btn-pill{border-radius:999px;}
  .btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 8px 18px rgba(26,95,208,.22);}
  .btn-primary:hover{background:var(--brand-700);transform:translateY(-1px);box-shadow:0 12px 26px rgba(26,95,208,.28);}
  .btn-primary:active{transform:translateY(0);box-shadow:0 4px 10px rgba(26,95,208,.22);}
  .btn-outline{background:#fff;border-color:var(--line);color:var(--ink-900);}
  .btn-outline:hover{background:var(--brand-50);border-color:var(--brand-500);color:var(--brand-600);}
  .btn-ghost{background:transparent;color:var(--ink-600);}
  .btn-ghost:hover{background:var(--brand-50);color:var(--brand-600);}
  .btn:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;}
  .btn:disabled{opacity:.5;box-shadow:none;cursor:not-allowed;transform:none;}

  /* ---------- badges / tags ---------- */
  .badge{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;font-size:12.5px;font-weight:700;}
  .badge-brand{background:var(--brand-50);color:var(--brand-600);}
  .badge-support{background:var(--support-50);color:var(--support-600);}
  .badge-accent{background:var(--accent-50);color:#8A5A05;}
  .tag{display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13.5px;font-weight:600;color:var(--ink-600);transition:.2s;}
  .tag:hover{border-color:var(--brand-100);background:var(--brand-50);color:var(--brand-600);}

  /* ---------- mobile drawer ---------- */
  .drawer-mask{position:fixed;inset:0;background:rgba(15,27,45,.44);opacity:0;visibility:hidden;transition:.25s ease;z-index:70;}
  .drawer-mask.open{opacity:1;visibility:visible;}
  .mobile-drawer{
    position:fixed;top:0;right:0;height:100%;width:84vw;max-width:360px;background:#fff;z-index:80;
    transform:translateX(102%);transition:transform .28s ease;display:flex;flex-direction:column;
    padding:18px 20px 24px;box-shadow:-12px 0 32px rgba(15,27,45,.14);overflow-y:auto;
  }
  .mobile-drawer.open{transform:translateX(0);}
  .drawer-nav a{display:block;padding:13px 14px;border-radius:12px;font-size:15.5px;font-weight:600;color:var(--ink-700);transition:.2s;}
  .drawer-nav a:hover{background:var(--brand-50);color:var(--brand-600);}
  .drawer-nav a.active{background:var(--brand-50);color:var(--brand-600);}

  /* ---------- article hero ---------- */
  .article-hero{
    position:relative;overflow:hidden;background:#fff;border-bottom:1px solid var(--line);
    padding:32px 0 44px;
  }
  .article-hero::before{
    content:"";position:absolute;inset:0;
    background-image:linear-gradient(rgba(26,95,208,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(26,95,208,.05) 1px,transparent 1px);
    background-size:52px 52px;opacity:.7;pointer-events:none;
  }
  .article-hero > .site-container{position:relative;z-index:1;}
  .breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13.5px;color:var(--ink-400);}
  .breadcrumb a{color:var(--ink-600);font-weight:600;transition:.2s;}
  .breadcrumb a:hover{color:var(--brand-600);}
  .breadcrumb .sep{color:var(--ink-400);}
  .breadcrumb .current{color:var(--ink-400);max-width:min(560px,72vw);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
  .article-title{
    font-size:clamp(28px,4vw,44px);line-height:1.28;font-weight:800;color:var(--ink-900);
    letter-spacing:0;margin:18px 0 0;max-width:920px;
  }
  .meta-row{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-top:20px;font-size:13.5px;color:var(--ink-400);}
  .meta-row i{color:var(--brand-500);margin-right:5px;}
  .meta-dot{width:4px;height:4px;border-radius:50%;background:var(--line);}

  /* ---------- article body ---------- */
  .article-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--r-panel);box-shadow:var(--sh-card);padding:clamp(24px,4vw,52px);}
  .article-body{max-width:800px;margin:0 auto;font-size:17.5px;line-height:1.9;color:var(--ink-700);word-break:break-word;}
  .article-body > *:first-child{margin-top:0;}
  .article-body p{margin:0 0 1.2em;}
  .article-body h2{
    position:relative;font-size:28px;line-height:1.35;font-weight:800;color:var(--ink-900);
    margin:40px 0 16px;padding-left:14px;
  }
  .article-body h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--brand-600);}
  .article-body h3{font-size:21px;line-height:1.4;font-weight:700;color:var(--ink-900);margin:32px 0 12px;}
  .article-body h4{font-size:18px;font-weight:700;color:var(--ink-900);margin:24px 0 10px;}
  .article-body a{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px;}
  .article-body a:hover{color:var(--brand-700);}
  .article-body strong{color:var(--ink-900);font-weight:700;}
  .article-body blockquote{
    margin:24px 0;padding:16px 20px;border-left:3px solid var(--brand-600);
    background:var(--brand-50);border-radius:0 12px 12px 0;color:var(--ink-700);
  }
  .article-body blockquote p:last-child{margin-bottom:0;}
  .article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.4em;}
  .article-body ul{list-style:disc;}
  .article-body ol{list-style:decimal;}
  .article-body li{margin:.45em 0;}
  .article-body img{border-radius:12px;margin:24px auto;width:100%;height:auto;}
  .article-body figure{margin:24px 0;}
  .article-body figcaption{font-size:13px;color:var(--ink-400);text-align:center;margin-top:10px;}
  .article-body table{
    display:block;width:100%;max-width:100%;overflow-x:auto;border-collapse:collapse;
    margin:24px 0;font-size:15px;border:1px solid var(--line);border-radius:10px;
  }
  .article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;vertical-align:top;}
  .article-body th{background:var(--bg);font-weight:700;color:var(--ink-900);}
  .article-body pre{
    background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:16px 18px;
    overflow-x:auto;font-size:14px;line-height:1.7;margin:22px 0;
  }
  .article-body code{background:var(--bg);border-radius:6px;padding:2px 6px;font-size:15px;}
  .article-body pre code{background:transparent;padding:0;}
  .article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0;}
  .article-body > p:first-of-type{font-size:18px;color:var(--ink-900);}

  .article-foot{
    max-width:800px;margin:36px auto 0;padding-top:24px;border-top:1px solid var(--line);
    display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;
  }
  .tag-row{display:flex;flex-wrap:wrap;gap:10px;}
  .share-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
  .copy-tip{
    font-size:13px;color:var(--support-600);background:var(--support-50);border-radius:999px;
    padding:6px 14px;opacity:0;visibility:hidden;transition:.25s;
  }
  .copy-tip.show{opacity:1;visibility:visible;}

  .empty-state{
    max-width:800px;margin:0 auto;background:var(--bg);border:1px dashed var(--line);border-radius:var(--r-card);
    padding:40px 24px;text-align:center;color:var(--ink-600);
  }
  .empty-state i{font-size:30px;color:var(--ink-400);}
  .empty-state h2{font-size:20px;font-weight:800;color:var(--ink-900);margin:14px 0 8px;}

  /* ---------- tips rows ---------- */
  .tip-row{
    display:flex;gap:18px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
    padding:22px 24px;box-shadow:var(--sh-card);transition:.22s ease;
  }
  .tip-row:hover{border-color:var(--brand-100);box-shadow:var(--sh-lift);transform:translateY(-2px);}
  .tip-icon{
    width:46px;height:46px;border-radius:13px;background:var(--brand-50);color:var(--brand-600);
    display:flex;align-items:center;justify-content:center;font-size:18px;flex:0 0 auto;
  }
  .tip-row h3{font-size:17px;font-weight:800;color:var(--ink-900);margin-bottom:6px;}
  .tip-row p{font-size:14.5px;color:var(--ink-600);line-height:1.8;}

  /* ---------- related cards ---------- */
  .related-grid{display:grid;grid-template-columns:1.15fr 1fr 1fr;gap:24px;}
  .rel-card{
    display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
    overflow:hidden;box-shadow:var(--sh-card);transition:.24s ease;
  }
  .rel-card:hover{border-color:var(--brand-100);box-shadow:var(--sh-lift);transform:translateY(-3px);}
  .rel-thumb{aspect-ratio:16/9;width:100%;object-fit:cover;background:var(--ph);}
  .rel-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
  .rel-body h3{font-size:17px;font-weight:700;color:var(--ink-900);line-height:1.5;}
  .rel-body p{font-size:14px;color:var(--ink-600);line-height:1.75;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
  .rel-more{
    margin-top:auto;font-size:14px;font-weight:700;color:var(--brand-600);display:inline-flex;align-items:center;gap:6px;transition:.2s;
  }
  .rel-card:hover .rel-more i{transform:translateX(3px);}
  .rel-more i{transition:transform .2s ease;}

  /* ---------- CTA panel ---------- */
  .cta-panel{
    background:var(--brand-50);border:1px solid var(--brand-100);border-radius:var(--r-panel);
    padding:clamp(24px,4vw,44px);display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  }
  .cta-panel h2{font-size:clamp(22px,3vw,30px);font-weight:800;color:var(--ink-900);line-height:1.35;}
  .cta-panel p{margin-top:10px;font-size:15px;color:var(--ink-600);max-width:620px;line-height:1.8;}
  .cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

  /* ---------- footer ---------- */
  .site-footer{background:var(--ink-900);color:#C9D3E0;margin-top:0;}
  .footer-grid{
    display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding:64px 0 40px;
  }
  .footer-brand .name{font-size:17px;font-weight:800;color:#fff;}
  .footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:var(--ink-400);max-width:340px;}
  .socials{display:flex;gap:10px;margin-top:20px;}
  .socials a{
    width:38px;height:38px;border-radius:11px;background:rgba(255,255,255,.08);color:#D6DEE9;
    display:flex;align-items:center;justify-content:center;font-size:15px;transition:.22s;
  }
  .socials a:hover{background:var(--brand-600);color:#fff;transform:translateY(-2px);}
  .footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;}
  .footer-col li{margin-bottom:12px;}
  .footer-col a{font-size:14px;color:var(--ink-400);transition:.2s;}
  .footer-col a:hover{color:#fff;}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.1);padding:22px 0;display:flex;justify-content:space-between;
    gap:14px;flex-wrap:wrap;font-size:13px;color:var(--ink-400);
  }

  @media (max-width:1024px){
    :root{--sec-y:64px;}
    .related-grid{grid-template-columns:1fr 1fr;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:52px 0 32px;}
  }
  @media (max-width:768px){
    :root{--sec-y:52px;}
    .article-hero{padding:22px 0 34px;}
    .article-body{font-size:17px;line-height:1.88;}
    .article-body h2{font-size:23px;margin-top:34px;}
    .article-body h3{font-size:19px;}
    .article-wrap{padding:22px 18px;border-radius:var(--r-card);}
    .article-foot{flex-direction:column;align-items:flex-start;}
    .related-grid{grid-template-columns:1fr;}
    .cta-panel{flex-direction:column;align-items:stretch;}
    .cta-actions .btn{width:100%;}
    .footer-grid{grid-template-columns:1fr;padding:44px 0 28px;}
    .footer-brand p{max-width:none;}
    .breadcrumb .current{max-width:60vw;}
  }
  @media (max-width:520px){
    .site-container{padding:0 16px;}
    .meta-row{font-size:12.5px;gap:9px;}
    .tip-row{padding:18px;gap:14px;}
  }

/* roulang page: category1 */
:root{
  --brand-600:#1A5FD0;
  --brand-500:#2C7BE5;
  --brand-100:#DCE9FC;
  --brand-50:#EDF3FE;
  --support-500:#12A594;
  --support-50:#E6F6F3;
  --accent-500:#F5A524;
  --accent-50:#FEF3E2;
  --ink-900:#0F1B2D;
  --ink-700:#24344D;
  --ink-600:#475569;
  --ink-400:#94A3B8;
  --bg:#F4F7FB;
  --surface:#FFFFFF;
  --line:#E3E9F2;
  --ph:#E8EEF7;
  --radius-card:16px;
  --radius-panel:20px;
  --radius-btn:12px;
  --shadow-1:0 2px 6px rgba(15,27,45,.04), 0 12px 28px rgba(15,27,45,.06);
  --shadow-2:0 6px 16px rgba(15,27,45,.08), 0 20px 40px rgba(15,27,45,.10);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-700);
  background:var(--bg);
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0}
h1,h2,h3,h4{margin:0;color:var(--ink-900);line-height:1.3;font-weight:800}
p{margin:0}
ul,ol{margin:0;padding:0}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}

.site-container{max-width:1200px;margin:0 auto;padding:0 20px;width:100%}
.section{padding:88px 0}
.section-tight{padding:0 0 88px}
@media(max-width:1024px){
  .section{padding:64px 0}
  .section-tight{padding:0 0 64px}
}
@media(max-width:640px){
  .section{padding:52px 0}
  .section-tight{padding:0 0 52px}
}

/* 导航 */
#siteHeader{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
#siteHeader.is-scrolled{border-bottom-color:var(--line);box-shadow:0 4px 16px rgba(15,27,45,.06)}
.logo-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;
  background:linear-gradient(135deg,var(--brand-500),var(--brand-600));
  color:#fff;display:inline-flex;align-items:center;justify-content:center;
  font-weight:800;font-size:18px;box-shadow:0 6px 14px rgba(26,95,208,.25);
}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:9px 14px;font-size:15px;color:var(--ink-700);
  border-radius:8px;white-space:nowrap;
  transition:color .2s ease,background .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;
  background:var(--brand-600);transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;border-radius:2px;
}
.nav-link:hover{color:var(--ink-900);background:var(--brand-50)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--brand-600);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-pill{border-radius:999px;padding:0 24px}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 6px 16px rgba(26,95,208,.24)}
.btn-primary:hover{background:var(--brand-500);transform:translateY(-1px);box-shadow:0 10px 22px rgba(26,95,208,.28)}
.btn-primary:active{transform:none;box-shadow:none}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink-700)}
.btn-ghost:hover{background:var(--brand-50);border-color:var(--brand-500);color:var(--brand-600)}
.btn[disabled],.btn.is-disabled{opacity:.5;box-shadow:none;pointer-events:none}

/* 抽屉 */
#drawerOverlay{
  position:fixed;inset:0;background:rgba(15,27,45,.45);z-index:70;
  opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;
}
#drawerOverlay.open{opacity:1;visibility:visible}
#menuDrawer{
  position:fixed;top:0;right:0;height:100%;width:84vw;max-width:360px;z-index:80;
  background:#fff;padding:22px;overflow-y:auto;
  transform:translateX(100%);transition:transform .3s ease;
  box-shadow:-10px 0 30px rgba(15,27,45,.12);
}
#menuDrawer.open{transform:translateX(0)}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 4px;font-size:15.5px;color:var(--ink-700);
  border-bottom:1px solid var(--line);
}
.drawer-link:hover{color:var(--brand-600)}
.drawer-link.active{color:var(--brand-600);font-weight:600}

/* 通用组件 */
.chip{
  display:inline-flex;align-items:center;gap:6px;
  height:28px;padding:0 12px;border-radius:999px;
  background:var(--brand-50);color:var(--brand-600);
  font-size:13px;font-weight:600;
}
.chip-accent{background:var(--accent-50);color:#B4741A}
.chip-support{background:var(--support-50);color:#0C7C70}
.sec-head h2{font-size:clamp(24px,3vw,32px);margin:14px 0 14px}
.sec-head p{color:var(--ink-600);font-size:16px;max-width:720px}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-1);
  transition:border-color .25s ease,box-shadow .25s ease,transform .25s ease;
}
.card:hover{border-color:var(--brand-100);box-shadow:var(--shadow-2);transform:translateY(-2px)}
.card h3{font-size:20px;margin-bottom:10px}
.card p{color:var(--ink-600);font-size:15px}
.card-icon{
  width:46px;height:46px;border-radius:14px;background:var(--brand-50);
  color:var(--brand-600);display:inline-flex;align-items:center;justify-content:center;
  font-size:18px;margin-bottom:18px;
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;
  border-radius:999px;background:#F5F8FD;border:1px solid var(--line);
  font-size:12.5px;color:var(--ink-600);
}

/* 分类页横幅 */
.cat-banner{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#FFFFFF 0%,#F4F7FB 100%);
  padding:44px 0 64px;
  border-bottom:1px solid var(--line);
}
.cat-banner::before{
  content:"";position:absolute;right:-120px;top:-140px;width:460px;height:460px;
  background:radial-gradient(circle,rgba(44,123,229,.10),rgba(44,123,229,0) 68%);
  pointer-events:none;
}
.cat-banner::after{
  content:"";position:absolute;left:-80px;bottom:-160px;width:380px;height:380px;
  background:radial-gradient(circle,rgba(18,165,148,.10),rgba(18,165,148,0) 70%);
  pointer-events:none;
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13.5px;color:var(--ink-400);margin-bottom:26px;position:relative;z-index:2;
}
.breadcrumb a:hover{color:var(--brand-600)}
.breadcrumb .sep{color:#C9D3E2}
.breadcrumb .current{color:var(--ink-700);font-weight:600}
.cat-banner .inner{position:relative;z-index:2}
.cat-banner h1{
  font-size:clamp(30px,4.4vw,50px);
  letter-spacing:0;margin:18px 0 16px;
}
.cat-banner .lead{color:var(--ink-600);font-size:17px;max-width:640px}
.banner-media{
  border-radius:var(--radius-panel);overflow:hidden;
  box-shadow:var(--shadow-1);border:1px solid var(--line);background:var(--ph);
}
.banner-media img{width:100%;aspect-ratio:4/3;object-fit:cover;height:100%}
.banner-facts{
  display:flex;flex-wrap:wrap;gap:12px 34px;margin-top:34px;
  padding-top:22px;border-top:1px solid var(--line);
}
.banner-facts .fact{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--ink-600)}
.banner-facts i{color:var(--brand-600);font-size:14px}

/* 步骤卡 */
.step-list{list-style:none;display:grid;gap:16px;margin-top:32px}
.step-card{
  display:flex;gap:18px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px 24px;box-shadow:var(--shadow-1);
  transition:border-color .25s ease,box-shadow .25s ease,transform .25s ease;
}
.step-card:hover{border-color:var(--brand-100);box-shadow:var(--shadow-2);transform:translateY(-2px)}
.step-no{
  flex:0 0 42px;width:42px;height:42px;border-radius:13px;
  background:var(--brand-50);color:var(--brand-600);
  font-weight:800;font-size:17px;display:inline-flex;align-items:center;justify-content:center;
}
.step-card h3{font-size:18.5px;margin-bottom:6px}
.step-card p{color:var(--ink-600);font-size:15px}
.media-frame{
  border-radius:var(--radius-panel);overflow:hidden;border:1px solid var(--line);
  background:var(--ph);box-shadow:var(--shadow-1);
}
.media-frame img{width:100%;height:100%;object-fit:cover}
.tips-panel{
  margin-top:20px;background:var(--support-50);border:1px solid #CDEDE7;
  border-radius:var(--radius-card);padding:20px 22px;
}
.tips-panel h4{font-size:15.5px;margin-bottom:8px;color:#0C7C70}
.tips-panel p{font-size:14px;color:var(--ink-600)}

/* 速查列表 */
.fix-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:32px}
.fix-item{
  display:flex;gap:16px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);padding:22px;box-shadow:var(--shadow-1);
  transition:border-color .25s ease,box-shadow .25s ease;
}
.fix-item:hover{border-color:var(--brand-100);box-shadow:var(--shadow-2)}
.fix-item i{color:var(--accent-500);font-size:17px;margin-top:4px}
.fix-item h3{font-size:16.5px;margin-bottom:6px}
.fix-item p{font-size:14.5px;color:var(--ink-600)}
@media(max-width:768px){.fix-list{grid-template-columns:1fr}}

/* 勾选要点 */
.check-list{list-style:none;display:grid;gap:14px;margin-top:26px}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;color:var(--ink-700)}
.check-list i{color:var(--support-500);margin-top:6px;font-size:14px}

/* FAQ */
.faq-wrap{
  max-width:880px;margin:32px auto 0;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-1);overflow:hidden;
}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;text-align:left;font-size:16.5px;font-weight:600;color:var(--ink-900);
  cursor:pointer;transition:background .2s ease;
}
.faq-q:hover{background:var(--brand-50)}
.faq-ico{
  flex:0 0 28px;width:28px;height:28px;border-radius:50%;
  background:var(--brand-50);color:var(--brand-600);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:12px;transition:transform .25s ease,background .25s ease,color .25s ease;
}
.faq-item.open .faq-ico{transform:rotate(45deg);background:var(--brand-600);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-item.open .faq-a{max-height:460px}
.faq-a p{padding:0 24px 22px 24px;font-size:14.5px;color:var(--ink-600);background:#FAFCFF}
.faq-item.open .faq-q{background:#FAFCFF}

/* CTA */
.cta-panel{
  background:linear-gradient(135deg,rgba(26,95,208,.08),rgba(44,123,229,.05));
  border:1px solid var(--brand-100);border-radius:var(--radius-panel);
  padding:42px;display:flex;align-items:center;justify-content:space-between;gap:30px;
}
.cta-panel h2{font-size:clamp(22px,2.6vw,28px);margin-bottom:10px}
.cta-panel p{color:var(--ink-600);font-size:15px;max-width:560px}
@media(max-width:768px){
  .cta-panel{flex-direction:column;align-items:flex-start;padding:28px;gap:22px}
  .cta-panel .btn{width:100%}
}

/* 页脚 */
.site-footer{background:var(--ink-900);color:var(--ink-400);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand .name{color:#fff;font-weight:700;font-size:16.5px}
.footer-brand p{font-size:14px;line-height:1.85;margin:16px 0 20px;max-width:340px}
.socials{display:flex;gap:10px}
.socials a{
  width:38px;height:38px;border-radius:11px;background:rgba(255,255,255,.08);
  display:inline-flex;align-items:center;justify-content:center;color:#CBD5E1;
  transition:background .2s ease,color .2s ease;
}
.socials a:hover{background:var(--brand-600);color:#fff}
.footer-col h4{color:#fff;font-size:14px;font-weight:700;margin-bottom:16px;letter-spacing:0}
.footer-col ul{list-style:none;display:grid;gap:11px}
.footer-col a{font-size:14px;color:var(--ink-400);transition:color .2s ease}
.footer-col a:hover{color:#fff}
.footer-bottom{
  margin-top:42px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;font-size:13px;
}
@media(max-width:1024px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:640px){
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .cat-banner{padding:32px 0 48px}
}

/* roulang page: category2 */
:root{
  --brand-600:#1A5FD0; --brand-500:#2C7BE5; --brand-100:#DCE9FC; --brand-50:#EDF3FE;
  --support-500:#12A594; --support-50:#E6F6F3;
  --accent-500:#F5A524; --accent-50:#FEF3E2;
  --ink-900:#0F1B2D; --ink-700:#24344D; --ink-600:#475569; --ink-400:#94A3B8;
  --bg:#F4F7FB; --surface:#FFFFFF; --line:#E3E9F2; --ph:#E8EEF7;
  --r-card:16px; --r-panel:20px; --r-btn:12px;
  --shadow-1:0 2px 6px rgba(15,27,45,.04), 0 12px 28px rgba(15,27,45,.06);
  --shadow-2:0 6px 16px rgba(15,27,45,.08), 0 20px 40px rgba(15,27,45,.10);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0; background:var(--bg); color:var(--ink-700);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",sans-serif;
  font-size:16px; line-height:1.8; letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.3;letter-spacing:0;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease;}
img{display:block;max-width:100%;height:auto;}
button{font-family:inherit;}
::selection{background:var(--brand-100);color:var(--ink-900);}
.site-container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{font-size:clamp(24px,2.6vw,32px);}
.section-head p{margin-top:14px;color:var(--ink-600);font-size:16px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand-600);background:var(--brand-50);border:1px solid var(--brand-100);border-radius:999px;padding:5px 14px;}
.section-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none;}
.text-link{color:var(--brand-600);font-weight:600;font-size:14.5px;display:inline-flex;align-items:center;gap:6px;}
.text-link:hover{color:var(--brand-500);}
.text-link i{font-size:12px;transition:transform .2s ease;}
.text-link:hover i{transform:translateX(3px);}

/* Logo & header */
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;flex:none;
  border-radius:12px;background:var(--brand-600);color:#fff;font-weight:800;font-size:18px;
  box-shadow:0 6px 14px rgba(26,95,208,.22);
}
#siteHeader{
  position:sticky;top:0;z-index:60;background:rgba(244,247,251,.88);
  backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid transparent;
  transition:background-color .25s ease,box-shadow .25s ease,border-color .25s ease;
}
#siteHeader.is-scrolled{background:#fff;border-bottom-color:var(--line);box-shadow:0 2px 14px rgba(15,27,45,.07);}
.nav-link{
  position:relative;font-size:15px;color:var(--ink-600);padding:8px 12px;border-radius:8px;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--brand-600);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:var(--ink-900);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--ink-900);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 20px;
  font-size:15px;font-weight:600;border-radius:var(--r-btn);border:1px solid transparent;cursor:pointer;
  white-space:nowrap;transition:all .2s ease;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 6px 14px rgba(26,95,208,.18);}
.btn-primary:hover{background:#1550B4;color:#fff;transform:translateY(-1px);box-shadow:0 12px 24px rgba(26,95,208,.24);}
.btn-primary:active{transform:none;box-shadow:0 4px 10px rgba(26,95,208,.16);}
.btn-primary:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;}
.btn-outline{background:#fff;border-color:var(--line);color:var(--ink-700);}
.btn-outline:hover{border-color:var(--brand-500);background:var(--brand-50);color:var(--brand-600);}
.btn-outline:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;}
.btn-ghost{background:transparent;color:var(--ink-700);}
.btn-ghost:hover{background:var(--brand-50);color:var(--brand-600);}
.btn-pill{border-radius:999px;padding:0 24px;}
.btn-sm{height:40px;font-size:14px;padding:0 16px;}
.btn-block{width:100%;}
.btn:disabled{opacity:.5;box-shadow:none;transform:none;cursor:not-allowed;}

/* Drawer */
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,27,45,.45);opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;z-index:80;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;background:#fff;z-index:90;
  transform:translateX(100%);transition:transform .28s ease;display:flex;flex-direction:column;
  box-shadow:-12px 0 40px rgba(15,27,45,.16);overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:18px 20px;border-bottom:1px solid var(--line);}
.drawer-head button{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink-700);cursor:pointer;}
.drawer-head button:hover{background:var(--brand-50);color:var(--brand-600);}
.drawer-nav{display:flex;flex-direction:column;padding:12px 12px 0;}
.drawer-link{padding:13px 14px;border-radius:10px;font-size:15.5px;color:var(--ink-700);font-weight:500;}
.drawer-link:hover{background:var(--brand-50);color:var(--brand-600);}
.drawer-link.active{background:var(--brand-50);color:var(--brand-600);font-weight:600;}
.drawer-foot{margin-top:auto;padding:20px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:12px;}

/* Page banner */
.page-banner{position:relative;background:#fff;border-bottom:1px solid var(--line);overflow:hidden;}
.page-banner::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(15,27,45,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(15,27,45,.045) 1px,transparent 1px);
  background-size:46px 46px;
}
.banner-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.15fr .85fr;gap:52px;align-items:center;padding:56px 0 60px;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-400);margin-bottom:20px;flex-wrap:wrap;}
.breadcrumb a{color:var(--ink-600);}
.breadcrumb a:hover{color:var(--brand-600);}
.breadcrumb span.sep{color:var(--ink-400);}
.breadcrumb .current{color:var(--ink-700);font-weight:600;}
.banner-grid h1{font-size:clamp(30px,4vw,48px);font-weight:800;line-height:1.22;}
.banner-grid .lead{margin-top:18px;font-size:17px;color:var(--ink-600);max-width:560px;}
.banner-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.banner-figure{position:relative;border-radius:var(--r-panel);overflow:hidden;box-shadow:var(--shadow-2);aspect-ratio:4/3;background:var(--ph);}
.banner-figure img{width:100%;height:100%;object-fit:cover;}
.banner-badge{
  position:absolute;top:16px;right:16px;background:#fff;border-radius:14px;padding:12px 16px;
  box-shadow:0 8px 24px rgba(15,27,45,.14);min-width:150px;
}
.banner-badge .k{font-size:12px;color:var(--ink-400);}
.banner-badge .v{font-size:18px;font-weight:800;color:var(--ink-900);margin-top:2px;}

/* Chips & tags */
.tag{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;border-radius:999px;padding:4px 12px;line-height:1.6;}
.tag-open{background:var(--support-50);color:#0B7C6F;}
.tag-brand{background:var(--brand-50);color:var(--brand-600);}
.tag-wait{background:var(--accent-50);color:#8A5A00;}
.tag-full{background:#EEF2F7;color:var(--ink-600);}
.tag-soft{background:#F1F5FB;color:var(--ink-600);}

/* Timeline */
.timeline-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--r-panel);padding:36px 28px 30px;box-shadow:var(--shadow-1);}
.timeline-track{position:relative;display:grid;grid-template-columns:repeat(5,1fr);}
.timeline-track::before{content:"";position:absolute;left:6%;right:6%;top:5px;height:2px;background:var(--line);}
.tl-node{position:relative;padding:0 14px;text-align:center;}
.tl-dot{width:12px;height:12px;border-radius:50%;background:var(--brand-600);box-shadow:0 0 0 4px var(--brand-100);margin:0 auto;position:relative;z-index:1;}
.tl-node.is-first .tl-dot{background:var(--accent-500);box-shadow:0 0 0 4px var(--accent-50);}
.tl-time{margin-top:18px;font-size:13px;font-weight:600;color:var(--brand-600);}
.tl-title{margin-top:8px;font-size:15.5px;font-weight:700;color:var(--ink-900);}
.tl-desc{margin-top:8px;font-size:13.5px;color:var(--ink-600);line-height:1.75;}

/* Event cards */
.event-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.event-card{
  display:flex;gap:20px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow-1);transition:box-shadow .25s ease,border-color .25s ease,transform .25s ease;
}
.event-card:hover{border-color:var(--brand-100);box-shadow:var(--shadow-2);transform:translateY(-3px);}
.event-card.offset{margin-top:36px;}
.event-date{
  flex:none;width:74px;border-radius:14px;background:var(--brand-50);border:1px solid var(--brand-100);
  display:flex;flex-direction:column;align-items:center;justify-content:center;padding:14px 6px;text-align:center;
}
.event-date .d{font-size:26px;font-weight:800;color:var(--brand-600);line-height:1.1;}
.event-date .m{font-size:12.5px;color:var(--ink-600);margin-top:4px;}
.event-body{min-width:0;flex:1;}
.event-body h3{font-size:19px;font-weight:700;}
.event-body p{margin-top:10px;font-size:14.5px;color:var(--ink-600);line-height:1.8;}
.event-meta{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-top:16px;}
.event-meta .meta-text{font-size:13px;color:var(--ink-400);}
.event-foot{margin-top:14px;display:flex;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid var(--line);padding-top:14px;}
.event-foot .slot{font-size:13px;color:var(--ink-600);}
.event-foot .slot b{color:var(--ink-900);}

/* Flow steps */
.step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.step-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px 22px;box-shadow:var(--shadow-1);transition:box-shadow .25s ease,transform .25s ease;}
.step-card:hover{box-shadow:var(--shadow-2);transform:translateY(-3px);}
.step-num{display:inline-flex;align-items:center;justify-content:center;height:30px;min-width:44px;padding:0 12px;border-radius:999px;background:var(--brand-50);color:var(--brand-600);font-size:13px;font-weight:700;}
.step-card h3{margin-top:16px;font-size:18px;}
.step-card p{margin-top:10px;font-size:14.5px;color:var(--ink-600);line-height:1.8;}

/* Split block */
.split{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;}
.split-figure{border-radius:var(--r-panel);overflow:hidden;box-shadow:var(--shadow-2);aspect-ratio:5/4;background:var(--ph);}
.split-figure img{width:100%;height:100%;object-fit:cover;}
.split h2{font-size:clamp(24px,2.6vw,32px);}
.split .split-lead{margin-top:16px;color:var(--ink-600);font-size:16px;}
.check-list{margin-top:24px;display:flex;flex-direction:column;gap:14px;}
.check-list li{display:flex;gap:12px;font-size:15px;color:var(--ink-700);}
.check-list li i{color:var(--support-500);font-size:16px;margin-top:6px;flex:none;}

/* FAQ */
.faq-list{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);max-width:880px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:none;}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;font-size:16.5px;font-weight:600;color:var(--ink-900);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:#FAFCFF;}
.faq-item summary:focus-visible{outline:2px solid var(--brand-500);outline-offset:-4px;}
.faq-icon{flex:none;width:26px;height:26px;border-radius:8px;background:var(--brand-50);color:var(--brand-600);display:inline-flex;align-items:center;justify-content:center;font-size:12px;transition:transform .22s ease;}
.faq-item[open] .faq-icon{transform:rotate(45deg);}
.faq-answer{padding:0 24px 22px;font-size:14.5px;color:var(--ink-600);line-height:1.9;background:#FAFCFF;}

/* CTA band */
.cta-band{
  background:var(--brand-50);border:1px solid var(--brand-100);border-radius:var(--r-panel);
  padding:44px 40px;display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:center;
}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);}
.cta-band p{margin-top:14px;color:var(--ink-600);font-size:15.5px;max-width:520px;}
.cta-form{display:flex;gap:12px;align-items:flex-end;flex-wrap:wrap;}
.cta-form .field{flex:1;min-width:220px;}
.field-label{display:block;font-size:13.5px;font-weight:600;color:var(--ink-700);margin-bottom:8px;}
.field-input{
  width:100%;height:48px;border:1px solid var(--line);border-radius:10px;background:#fff;
  padding:0 15px;font-size:15px;color:var(--ink-900);transition:border-color .2s ease,box-shadow .2s ease;
}
.field-input::placeholder{color:var(--ink-400);}
.field-input:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px var(--brand-50);}
.form-hint{margin-top:12px;font-size:13px;color:var(--ink-400);}

/* Stats row */
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.stat-item{padding:28px 24px;border-right:1px solid var(--line);}
.stat-item:last-child{border-right:none;}
.stat-item .num{font-size:34px;font-weight:800;color:var(--ink-900);line-height:1.15;}
.stat-item .num small{font-size:15px;font-weight:600;color:var(--ink-600);margin-left:4px;}
.stat-item .label{margin-top:8px;font-size:13.5px;color:var(--ink-600);}

/* Footer */
.site-footer{background:var(--ink-900);color:#fff;margin-top:88px;padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.footer-brand .name{font-size:16.5px;font-weight:800;color:#fff;}
.footer-brand p{margin-top:18px;color:var(--ink-400);font-size:14px;line-height:1.85;max-width:330px;}
.socials{display:flex;gap:10px;margin-top:20px;}
.socials a{width:38px;height:38px;border-radius:10px;background:rgba(255,255,255,.08);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:14px;}
.socials a:hover{background:var(--brand-500);color:#fff;}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--ink-400);}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13px;color:var(--ink-400);
}

/* Responsive */
@media (max-width:1024px){
  .banner-grid{grid-template-columns:1fr;gap:32px;padding:44px 0 48px;}
  .banner-figure{aspect-ratio:16/9;max-height:300px;}
  .split{grid-template-columns:1fr;gap:32px;}
  .step-grid{grid-template-columns:repeat(2,1fr);}
  .stat-row{grid-template-columns:repeat(2,1fr);}
  .stat-item:nth-child(2){border-right:none;}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line);}
  .cta-band{grid-template-columns:1fr;padding:36px 28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  .site-container{padding:0 18px;}
  .section{padding:52px 0;}
  .section-tight{padding:44px 0;}
  .section-head{margin-bottom:28px;}
  .section-head--row{flex-direction:column;align-items:flex-start;gap:14px;}
  .timeline-wrap{padding:26px 20px 22px;}
  .timeline-track{grid-template-columns:1fr;gap:0;}
  .timeline-track::before{left:5px;right:auto;top:10px;bottom:10px;width:2px;height:auto;}
  .tl-node{text-align:left;padding:0 0 26px 34px;}
  .tl-node:last-child{padding-bottom:0;}
  .tl-dot{margin:6px 0 0;position:absolute;left:0;top:0;}
  .tl-time{margin-top:0;}
  .event-grid{grid-template-columns:1fr;gap:18px;}
  .event-card.offset{margin-top:0;}
  .event-card{flex-direction:column;gap:16px;padding:20px;}
  .event-date{width:100%;flex-direction:row;justify-content:flex-start;gap:10px;padding:12px 16px;}
  .event-date .d{font-size:20px;}
  .event-date .m{margin-top:0;}
  .step-grid{grid-template-columns:1fr;}
  .faq-item summary{padding:18px;font-size:15.5px;}
  .faq-answer{padding:0 18px 18px;}
  .stat-item{padding:22px 18px;}
  .stat-item .num{font-size:28px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{padding:48px 0 24px;margin-top:56px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .banner-badge{position:static;display:inline-block;margin-top:14px;}
}
@media (max-width:520px){
  .banner-grid h1{font-size:30px;}
  .btn{width:100%;}
  .cta-form .field{min-width:100%;}
  .cta-form .btn{width:100%;}
}

/* roulang page: category3 */
:root{
  --brand-600:#1A5FD0;
  --brand-700:#1449A8;
  --brand-500:#2C7BE5;
  --brand-100:#DCE9FC;
  --brand-50:#EDF3FE;
  --support-500:#12A594;
  --support-50:#E6F6F3;
  --accent-500:#F5A524;
  --accent-50:#FEF3E2;
  --ink-900:#0F1B2D;
  --ink-700:#24344D;
  --ink-600:#475569;
  --ink-400:#94A3B8;
  --bg:#F4F7FB;
  --surface:#FFFFFF;
  --line:#E3E9F2;
  --ph:#E8EEF7;
  --radius-card:16px;
  --radius-panel:20px;
  --radius-btn:12px;
  --shadow-card:0 2px 6px rgba(15,27,45,.04), 0 12px 28px rgba(15,27,45,.06);
  --shadow-hover:0 6px 16px rgba(15,27,45,.08), 0 20px 40px rgba(15,27,45,.10);
  --font: "PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Helvetica,Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  background:var(--bg);
  color:var(--ink-700);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:6px}

.site-container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{max-width:760px;margin-bottom:44px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand-600);
  background:var(--brand-50);border:1px solid var(--brand-100);
  padding:6px 14px;border-radius:999px;margin-bottom:16px;
}
.h2{font-size:clamp(22px,2.6vw,32px);line-height:1.3;font-weight:800;color:var(--ink-900);letter-spacing:0}
.h3{font-size:20px;line-height:1.4;font-weight:700;color:var(--ink-900)}
.lead{font-size:16px;color:var(--ink-600);margin-top:14px;line-height:1.85}

/* ============ 导航 ============ */
#siteHeader{
  position:sticky;top:0;z-index:60;
  background:rgba(244,247,251,.86);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid transparent;
  transition:background .25s ease, border-color .25s ease, box-shadow .25s ease;
}
#siteHeader.is-scrolled{
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  box-shadow:0 6px 18px rgba(15,27,45,.05);
}
.logo-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand-600),var(--brand-500));
  color:#fff;font-weight:800;font-size:17px;
  box-shadow:0 6px 14px rgba(26,95,208,.24);
}
.nav-link{
  position:relative;display:inline-block;
  padding:10px 12px;font-size:14.5px;font-weight:500;
  color:var(--ink-600);border-radius:8px;
  transition:color .2s ease, background .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;
  background:var(--brand-600);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.nav-link:hover{color:var(--ink-900);background:rgba(255,255,255,.7)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--brand-600);font-weight:700}
.nav-link.active::after{transform:scaleX(1)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;cursor:pointer;
  font-size:15px;font-weight:600;line-height:1;
  padding:0 22px;height:46px;border-radius:var(--radius-btn);
  transition:transform .18s ease, box-shadow .18s ease, background .18s ease, color .18s ease, border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 8px 18px rgba(26,95,208,.22)}
.btn-primary:hover{background:var(--brand-700);transform:translateY(-1px);box-shadow:0 12px 24px rgba(26,95,208,.28)}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px rgba(26,95,208,.20)}
.btn-ghost{background:#fff;color:var(--ink-700);border-color:var(--line)}
.btn-ghost:hover{background:var(--brand-50);border-color:var(--brand-500);color:var(--brand-700)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{height:40px;font-size:14px;padding:0 16px}
.btn-lg{height:52px;font-size:16px;padding:0 28px}
.btn-pill{border-radius:999px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.5;box-shadow:none;cursor:not-allowed}

/* 移动端抽屉 */
#mobileMenu{
  position:fixed;inset:0;z-index:80;pointer-events:none;
}
#mobileMenu .mask{
  position:absolute;inset:0;background:rgba(15,27,45,.42);
  opacity:0;transition:opacity .25s ease;
}
#mobileMenu .panel{
  position:absolute;top:0;right:0;height:100%;width:84vw;max-width:360px;
  background:#fff;padding:20px;transform:translateX(100%);
  transition:transform .28s ease;display:flex;flex-direction:column;gap:6px;
  box-shadow:-12px 0 40px rgba(15,27,45,.16);overflow-y:auto;
}
#mobileMenu.open{pointer-events:auto}
#mobileMenu.open .mask{opacity:1}
#mobileMenu.open .panel{transform:translateX(0)}
.m-menu-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 12px;border-radius:12px;font-size:15.5px;font-weight:600;color:var(--ink-700);
  border:1px solid transparent;transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.m-menu-link:hover{background:var(--brand-50);color:var(--brand-700);border-color:var(--brand-100)}
.m-menu-link.active{background:var(--brand-50);color:var(--brand-600)}

/* ============ 分类页横幅 ============ */
.page-banner{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);
  border-bottom:1px solid var(--line);
}
.page-banner .deco{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.06;
}
.banner-grid{
  position:relative;display:grid;grid-template-columns:1.25fr .95fr;
  gap:44px;align-items:center;padding:64px 0 68px;
}
.crumb{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--ink-400);margin-bottom:18px}
.crumb a{color:var(--ink-600)}
.crumb a:hover{color:var(--brand-600)}
.crumb .sep{color:#C8D2E0}
.crumb .now{color:var(--ink-900);font-weight:600}
.page-banner h1{
  font-size:clamp(30px,4.2vw,48px);line-height:1.25;font-weight:800;color:var(--ink-900);
  letter-spacing:0;
}
.page-banner .sub{font-size:17px;color:var(--ink-600);margin-top:18px;max-width:560px;line-height:1.8}
.banner-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;padding:6px 13px;border-radius:999px;
  background:#fff;border:1px solid var(--line);color:var(--ink-700);
}
.tag-brand{background:var(--brand-50);border-color:var(--brand-100);color:var(--brand-700)}
.tag-support{background:var(--support-50);border-color:#CDEBE6;color:#0E7F72}
.tag-accent{background:var(--accent-50);border-color:#F8E0B4;color:#8A5A05}
.banner-media{
  position:relative;border-radius:var(--radius-panel);overflow:hidden;
  box-shadow:var(--shadow-card);aspect-ratio:16/11;background:var(--ph);
}
.banner-media img{width:100%;height:100%;object-fit:cover;object-position:center}
.banner-float{
  position:absolute;right:14px;bottom:14px;background:rgba(255,255,255,.96);
  border:1px solid var(--line);border-radius:14px;padding:12px 16px;
  box-shadow:var(--shadow-card);backdrop-filter:blur(6px);
}
.banner-float .k{font-size:12px;color:var(--ink-400);font-weight:600}
.banner-float .v{font-size:15px;font-weight:800;color:var(--ink-900);margin-top:2px}

/* 数据条 */
.stats-bar{background:#fff;border-bottom:1px solid var(--line)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stat-item{padding:30px 26px;border-left:1px solid var(--line)}
.stat-item:first-child{border-left:0;padding-left:0}
.stat-item .num{font-size:clamp(28px,3.4vw,38px);font-weight:800;color:var(--ink-900);line-height:1.1}
.stat-item .num span{font-size:16px;font-weight:700;color:var(--brand-600);margin-left:4px}
.stat-item .txt{font-size:13.5px;color:var(--ink-400);margin-top:8px}

/* ============ 图文交替 ============ */
.alt-list{display:flex;flex-direction:column;gap:72px}
.alt-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.alt-row.reverse .alt-media{order:2}
.alt-media{
  border-radius:var(--radius-panel);overflow:hidden;background:var(--ph);
  box-shadow:var(--shadow-card);aspect-ratio:4/3;
}
.alt-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.alt-media:hover img{transform:scale(1.03)}
.alt-body .idx{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;background:var(--brand-50);
  color:var(--brand-600);font-weight:800;font-size:14px;margin-bottom:16px;
}
.alt-body h2{font-size:clamp(21px,2.5vw,28px);font-weight:800;color:var(--ink-900);line-height:1.35}
.alt-body p{margin-top:16px;font-size:16px;color:var(--ink-600);line-height:1.9}
.check-list{margin-top:22px;display:flex;flex-direction:column;gap:12px}
.check-list li{display:flex;gap:11px;font-size:15px;color:var(--ink-700);line-height:1.7}
.check-list li i{color:var(--support-500);font-size:14px;margin-top:6px;flex:0 0 auto}
.check-list li.na i{color:var(--ink-400)}
.check-list li.na{opacity:.62}

/* ============ 步骤 ============ */
.steps-wrap{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative}
.step-card{
  position:relative;background:var(--bg);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:26px 22px;
  transition:box-shadow .22s ease, transform .22s ease, border-color .22s ease;
}
.step-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:var(--brand-100);background:#fff}
.step-num{
  width:38px;height:38px;border-radius:999px;background:#fff;border:1px solid var(--brand-100);
  color:var(--brand-600);font-weight:800;font-size:15px;
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.step-card h3{font-size:17px;font-weight:700;color:var(--ink-900)}
.step-card p{font-size:14px;color:var(--ink-600);margin-top:10px;line-height:1.75}

/* ============ 面板/卡片 ============ */
.panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-panel);
  box-shadow:var(--shadow-card);padding:32px;
}
.risk-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:start}
.mini-list{display:flex;flex-direction:column;gap:14px;margin-top:20px}
.mini-item{
  display:flex;gap:14px;padding:16px 18px;border-radius:14px;background:var(--brand-50);
  border:1px solid var(--brand-100);
}
.mini-item i{color:var(--brand-600);font-size:16px;margin-top:5px}
.mini-item .t{font-size:15px;font-weight:700;color:var(--ink-900)}
.mini-item .d{font-size:14px;color:var(--ink-600);margin-top:6px;line-height:1.7}

/* ============ FAQ ============ */
.faq-list{max-width:880px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius-panel);overflow:hidden;box-shadow:var(--shadow-card)}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%;background:none;border:0;text-align:left;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 26px;font-size:16.5px;font-weight:600;color:var(--ink-900);line-height:1.6;
  transition:background .18s ease;
}
.faq-q:hover{background:var(--brand-50)}
.faq-q .ico{
  flex:0 0 auto;width:26px;height:26px;border-radius:999px;background:var(--brand-50);
  color:var(--brand-600);display:flex;align-items:center;justify-content:center;
  font-size:13px;transition:transform .25s ease, background .2s ease;
}
.faq-item.open .faq-q .ico{background:var(--brand-600);color:#fff;transform:rotate(180deg)}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .3s ease;
  background:#FBFCFE;
}
.faq-a .inner{padding:0 26px 22px;font-size:15px;color:var(--ink-600);line-height:1.85}

/* ============ CTA ============ */
.cta-panel{
  background:linear-gradient(135deg,var(--brand-50),#F7FAFF);
  border:1px solid var(--brand-100);border-radius:var(--radius-panel);
  padding:40px 44px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  box-shadow:var(--shadow-card);
}
.cta-panel h2{font-size:clamp(20px,2.4vw,26px);font-weight:800;color:var(--ink-900);line-height:1.35}
.cta-panel p{font-size:15px;color:var(--ink-600);margin-top:10px;max-width:640px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex:0 0 auto}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:#C7D2E0;padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand .name{font-size:16px;font-weight:800;color:#fff}
.footer-brand p{font-size:14px;color:#8FA0B8;margin-top:16px;line-height:1.85;max-width:330px}
.socials{display:flex;gap:10px;margin-top:20px}
.socials a{
  width:38px;height:38px;border-radius:10px;background:rgba(255,255,255,.07);
  display:flex;align-items:center;justify-content:center;color:#C7D2E0;font-size:14px;
  transition:background .2s ease, color .2s ease, transform .2s ease;
}
.socials a:hover{background:var(--brand-600);color:#fff;transform:translateY(-2px)}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:#94A3B8;transition:color .18s ease}
.footer-col a:hover{color:#fff}
.footer-bottom{
  margin-top:48px;padding:22px 0;border-top:1px solid rgba(255,255,255,.1);
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  font-size:13px;color:#7E8FA6;flex-wrap:wrap;
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .section{padding:64px 0}
  .banner-grid{grid-template-columns:1fr;gap:30px;padding:48px 0 54px}
  .banner-media{aspect-ratio:16/9}
  .alt-row{gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .risk-grid{grid-template-columns:1fr;gap:26px}
}
@media (max-width:768px){
  .section{padding:52px 0}
  .stats-grid{grid-template-columns:1fr 1fr}
  .stat-item{border-left:0;padding:22px 0;border-top:1px solid var(--line)}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-top:0}
  .stat-item:nth-child(odd){padding-right:16px}
  .alt-list{gap:52px}
  .alt-row{grid-template-columns:1fr;gap:22px}
  .alt-row.reverse .alt-media{order:0}
  .steps{grid-template-columns:1fr;gap:16px}
  .cta-panel{flex-direction:column;align-items:stretch;padding:28px 22px;text-align:left}
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%}
  .panel{padding:24px}
  .faq-q{padding:18px 18px;font-size:15.5px}
  .faq-a .inner{padding:0 18px 18px}
}
@media (max-width:520px){
  .site-container{padding:0 16px}
  .page-banner h1{font-size:28px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-brand p{max-width:none}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}

/* roulang page: category4 */
:root{
  --brand-600:#1A5FD0; --brand-500:#2C7BE5; --brand-100:#DCE9FC; --brand-50:#EDF3FE; --brand-700:#1550B4;
  --support-500:#12A594; --support-50:#E6F6F3;
  --accent-500:#F5A524; --accent-50:#FEF3E2;
  --ink-900:#0F1B2D; --ink-700:#24344D; --ink-600:#475569; --ink-400:#94A3B8;
  --bg:#F4F7FB; --surface:#FFFFFF; --line:#E3E9F2; --ph:#E8EEF7;
  --radius-card:16px; --radius-panel:20px; --radius-btn:12px; --radius-field:10px;
  --shadow-card:0 2px 6px rgba(15,27,45,.04), 0 12px 28px rgba(15,27,45,.06);
  --shadow-hover:0 6px 16px rgba(15,27,45,.08), 0 20px 40px rgba(15,27,45,.10);
  --space-block:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink-900);font-size:16px;line-height:1.8;letter-spacing:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",sans-serif;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:6px}

.site-container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:var(--space-block) 0}
.section-tight{padding:56px 0}
.section-head{margin-bottom:36px}
.section-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand-600);background:var(--brand-50);border-radius:999px;padding:6px 14px;margin-bottom:14px}
.section-title{font-size:30px;line-height:1.3;font-weight:800;color:var(--ink-900)}
.section-desc{margin-top:12px;font-size:15px;color:var(--ink-600);max-width:720px}

/* 顶部导航 */
#siteHeader{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.9);backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:background .25s ease,border-color .25s ease,box-shadow .25s ease}
#siteHeader.scrolled{background:#fff;border-bottom-color:var(--line);box-shadow:0 2px 14px rgba(15,27,45,.06)}
.logo-mark{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:11px;background:var(--brand-600);color:#fff;font-size:18px;font-weight:800;flex:0 0 auto}
.nav-link{position:relative;display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:10px;font-size:15px;color:var(--ink-700);transition:color .2s ease,background .2s ease}
.nav-link::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--brand-600);transform:scaleX(0);transform-origin:left center;transition:transform .22s ease}
.nav-link:hover{color:var(--ink-900);background:var(--brand-50)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--brand-600);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:var(--radius-btn);border:1px solid transparent;font-size:15px;font-weight:600;white-space:nowrap;transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease}
.btn i{font-size:13px}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 4px 14px rgba(26,95,208,.22)}
.btn-primary:hover{background:var(--brand-700);transform:translateY(-1px);box-shadow:0 8px 22px rgba(26,95,208,.28)}
.btn-primary:active{transform:translateY(0);box-shadow:0 2px 8px rgba(26,95,208,.2)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink-700)}
.btn-ghost:hover{border-color:var(--brand-500);background:var(--brand-50);color:var(--brand-600)}
.btn-soft{background:var(--brand-50);color:var(--brand-600)}
.btn-soft:hover{background:var(--brand-100)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-lg{height:52px;padding:0 28px;font-size:16px}
.btn-block{width:100%}
.btn-pill{border-radius:999px}
.btn[disabled]{opacity:.5;box-shadow:none;pointer-events:none}

/* 移动端抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(15,27,45,.45);opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:70}
.drawer-mask.show{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;background:#fff;z-index:80;transform:translateX(102%);transition:transform .28s ease;display:flex;flex-direction:column;padding:18px 18px 24px;overflow-y:auto;box-shadow:-12px 0 32px rgba(15,27,45,.12)}
.drawer.show{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-nav{display:flex;flex-direction:column;gap:4px;padding:16px 0}
.drawer-link{display:flex;align-items:center;justify-content:space-between;padding:12px 12px;border-radius:10px;font-size:15.5px;color:var(--ink-700);transition:background .2s ease,color .2s ease}
.drawer-link:hover{background:var(--brand-50);color:var(--brand-600)}
.drawer-link.active{background:var(--brand-50);color:var(--brand-600);font-weight:600}
.drawer-foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:10px}

/* 分类页头横幅 */
.banner{position:relative;background:#fff;border-bottom:1px solid var(--line);overflow:hidden}
.banner::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(26,95,208,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(26,95,208,.05) 1px,transparent 1px);background-size:56px 56px;opacity:.55;pointer-events:none}
.banner-inner{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:52px;align-items:center;padding:58px 0 62px}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--ink-400);margin-bottom:18px}
.breadcrumb a{color:var(--ink-600);transition:color .2s ease}
.breadcrumb a:hover{color:var(--brand-600)}
.breadcrumb .sep{color:#C8D3E2}
.breadcrumb .current{color:var(--ink-700);font-weight:600}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand-600);background:var(--brand-50);border-radius:999px;padding:7px 15px;margin-bottom:18px}
.banner h1{font-size:clamp(30px,4.2vw,46px);line-height:1.28;font-weight:800;color:var(--ink-900)}
.banner-sub{margin-top:16px;font-size:16.5px;color:var(--ink-600);max-width:600px}
.banner-visual{position:relative;border-radius:var(--radius-panel);overflow:hidden;box-shadow:0 14px 36px rgba(15,27,45,.14)}
.banner-visual img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--radius-panel)}
.banner-badge{position:absolute;left:16px;bottom:16px;background:rgba(255,255,255,.95);border:1px solid var(--line);border-radius:14px;padding:12px 16px;box-shadow:0 8px 22px rgba(15,27,45,.12);display:flex;align-items:center;gap:12px}
.banner-badge .dotline{width:10px;height:10px;border-radius:50%;background:var(--support-500);box-shadow:0 0 0 4px var(--support-50)}

/* 搜索框 */
.search-box{display:flex;gap:10px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:14px;padding:9px 9px 9px 16px;margin-top:28px;box-shadow:var(--shadow-card);transition:border-color .2s ease,box-shadow .2s ease;max-width:640px}
.search-box:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 3px var(--brand-50)}
.search-box i.lead{color:var(--ink-400);font-size:15px}
.search-box input{flex:1;min-width:0;height:44px;border:0;outline:none;background:transparent;font-size:15px}
.search-box input::placeholder{color:var(--ink-400)}
.search-hint{margin-top:12px;font-size:13px;color:var(--ink-400)}

/* 指标条 */
.metric-row{display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border:1px solid var(--line);border-radius:var(--radius-panel);overflow:hidden;box-shadow:var(--shadow-card)}
.metric{padding:26px 24px}
.metric + .metric{border-left:1px solid var(--line)}
.metric-num{font-size:28px;font-weight:800;color:var(--brand-600);line-height:1.2}
.metric-label{margin-top:6px;font-size:13px;color:var(--ink-400)}

/* 标签 chips */
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.chip{display:inline-flex;align-items:center;gap:7px;height:38px;padding:0 16px;border-radius:999px;border:1px solid var(--line);background:#fff;font-size:14px;color:var(--ink-600);transition:border-color .2s ease,color .2s ease,background .2s ease}
.chip:hover{border-color:var(--brand-500);color:var(--brand-600);background:var(--brand-50)}
.chip.active{background:var(--brand-600);border-color:var(--brand-600);color:#fff}

/* FAQ */
.faq-wrap{display:grid;grid-template-columns:1fr 300px;gap:32px;align-items:start}
.faq-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);overflow:hidden}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-item{transition:background .2s ease}
.faq-item.open{background:#FBFDFF}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px 24px;text-align:left;font-size:16.5px;font-weight:600;color:var(--ink-900);transition:color .2s ease}
.faq-q:hover{color:var(--brand-600)}
.faq-q .ico{flex:0 0 auto;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--ink-600);font-size:12px;transition:transform .25s ease,background .2s ease,color .2s ease,border-color .2s ease}
.faq-item.open .faq-q .ico{transform:rotate(45deg);background:var(--brand-600);border-color:var(--brand-600);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a-inner{padding:0 24px 22px;font-size:14.8px;color:var(--ink-600);line-height:1.85}
.faq-a-inner strong{color:var(--ink-700)}
.faq-aside{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-card);position:sticky;top:96px}
.faq-aside h3{font-size:16px;font-weight:700;margin-bottom:12px;color:var(--ink-900)}
.faq-aside ul{display:flex;flex-direction:column;gap:10px}
.faq-aside li a{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--ink-600);transition:color .2s ease}
.faq-aside li a:hover{color:var(--brand-600)}
.faq-aside li a i{color:var(--brand-500);font-size:12px}
.faq-empty{display:none;padding:48px 24px;text-align:center;color:var(--ink-400);font-size:14.5px}
.faq-empty.show{display:block}

/* 热门问题横向列表卡 */
.list-card{display:flex;gap:24px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:20px;box-shadow:var(--shadow-card);transition:border-color .25s ease,box-shadow .25s ease,transform .25s ease}
.list-card:hover{border-color:var(--brand-100);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.list-card .thumb{flex:0 0 260px;border-radius:12px;overflow:hidden;background:var(--ph)}
.list-card .thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s ease}
.list-card:hover .thumb img{transform:scale(1.03)}
.list-card .body{min-width:0;flex:1}
.list-card h3{font-size:18px;font-weight:700;line-height:1.45;color:var(--ink-900);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.list-card:hover h3{color:var(--brand-600)}
.list-card p{margin-top:10px;font-size:14.5px;color:var(--ink-600);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.list-card .meta{margin-top:14px;display:flex;align-items:center;gap:14px;font-size:13px;color:var(--ink-400)}
.tag{display:inline-flex;align-items:center;height:26px;padding:0 11px;border-radius:999px;font-size:12.5px;font-weight:600}
.tag-brand{background:var(--brand-50);color:var(--brand-600)}
.tag-support{background:var(--support-50);color:var(--support-500)}
.tag-accent{background:var(--accent-50);color:#A96C08}
.arrow-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-600);transition:gap .2s ease}
.list-card:hover .arrow-link{gap:10px}

/* 相关分类跳转 */
.jump-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.jump-card{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-card);transition:border-color .25s ease,box-shadow .25s ease,transform .25s ease}
.jump-card:hover{border-color:var(--brand-100);box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.jump-card .ic{width:42px;height:42px;border-radius:12px;background:var(--brand-50);color:var(--brand-600);display:flex;align-items:center;justify-content:center;font-size:16px;margin-bottom:16px}
.jump-card h3{font-size:16.5px;font-weight:700;color:var(--ink-900)}
.jump-card p{margin-top:8px;font-size:13.8px;color:var(--ink-600);line-height:1.7}
.jump-card .go{margin-top:14px;font-size:13px;font-weight:600;color:var(--brand-600);display:inline-flex;align-items:center;gap:6px}

/* CTA 面板 */
.cta-panel{background:var(--brand-50);border:1px solid var(--brand-100);border-radius:var(--radius-panel);padding:36px 40px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.cta-panel h2{font-size:24px;font-weight:800;color:var(--ink-900)}
.cta-panel p{margin-top:10px;font-size:14.8px;color:var(--ink-600);max-width:620px}
.cta-actions{display:flex;gap:12px;flex:0 0 auto}

/* 页脚 */
.site-footer{background:var(--ink-900);color:#94A3B8;padding:64px 0 26px;margin-top:88px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:44px}
.footer-brand .name{font-size:16.5px;font-weight:800;color:#fff}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;max-width:330px}
.socials{display:flex;gap:10px;margin-top:20px}
.socials a{width:36px;height:36px;border-radius:10px;background:rgba(255,255,255,.07);color:#C7D3E3;display:flex;align-items:center;justify-content:center;font-size:14px;transition:background .2s ease,color .2s ease}
.socials a:hover{background:var(--brand-600);color:#fff}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:#94A3B8;transition:color .2s ease}
.footer-col a:hover{color:#fff}
.footer-bottom{margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px}

/* 响应式 */
@media (max-width:1024px){
  :root{--space-block:64px}
  .banner-inner{grid-template-columns:1fr;gap:32px;padding:44px 0 50px}
  .banner-visual{order:2}
  .banner-visual img{aspect-ratio:16/9}
  .metric-row{grid-template-columns:repeat(2,1fr)}
  .metric:nth-child(3){border-left:0}
  .metric:nth-child(n+3){border-top:1px solid var(--line)}
  .faq-wrap{grid-template-columns:1fr}
  .faq-aside{position:static}
  .jump-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  :root{--space-block:52px}
  .section-head{margin-bottom:26px}
  .section-title{font-size:24px}
  .banner h1{font-size:clamp(26px,7vw,32px)}
  .banner-sub{font-size:15.5px}
  .list-card{flex-direction:column;align-items:stretch;gap:16px}
  .list-card .thumb{flex:0 0 auto;width:100%}
  .cta-panel{flex-direction:column;align-items:stretch;padding:28px 22px}
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%}
  .search-box{flex-direction:column;align-items:stretch;padding:14px}
  .search-box input{height:42px;padding:0 4px}
  .search-box .btn{width:100%}
  .faq-q{padding:18px 18px;font-size:15.5px}
  .faq-a-inner{padding:0 18px 20px}
}
@media (max-width:520px){
  .metric-row{grid-template-columns:1fr}
  .metric + .metric{border-left:0;border-top:1px solid var(--line)}
  .jump-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}