/* roulang page: index */
:root{
  --brand-600:#23529E;
  --brand-700:#17386F;
  --brand-500:#3A6FC4;
  --brand-50:#EEF4FE;
  --accent-500:#FF8A2B;
  --accent-600:#F0771A;
  --accent-50:#FFF3E8;
  --teal-500:#16B8A8;
  --teal-50:#E7F9F7;
  --ink-900:#16202E;
  --ink-600:#5B6B80;
  --line:#E3E9F2;
  --surface:#FFFFFF;
  --bg:#F6F8FC;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-card:0 2px 6px rgba(22,32,46,.04),0 12px 28px rgba(35,82,158,.08);
  --shadow-hover:0 6px 14px rgba(22,32,46,.06),0 20px 42px rgba(35,82,158,.14);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-900);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-700);}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink-900);letter-spacing:0;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(35,82,158,.28);outline-offset:2px;border-radius:6px;}
.container{max-width:1200px;padding-left:20px;padding-right:20px;}
@media (min-width:1400px){.container{max-width:1280px;}}
.num{font-variant-numeric:tabular-nums;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;line-height:1;
  font-size:15px;font-weight:600;border-radius:var(--radius-btn);
  border:1.5px solid transparent;transition:all .25s ease;
  white-space:nowrap;box-shadow:none;
}
.btn-brand{background:var(--accent-500);color:#fff;box-shadow:0 6px 16px rgba(255,138,43,.26);}
.btn-brand:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);box-shadow:0 12px 24px rgba(255,138,43,.32);}
.btn-brand:active{transform:translateY(0);box-shadow:0 4px 10px rgba(255,138,43,.26);}
.btn-outline-brand{background:#fff;border-color:var(--brand-600);color:var(--brand-600);}
.btn-outline-brand:hover{background:var(--brand-50);border-color:var(--brand-700);color:var(--brand-700);transform:translateY(-1px);}
.btn-outline-brand:active{transform:translateY(0);}
.btn-soft{background:var(--brand-50);color:var(--brand-700);}
.btn-soft:hover{background:#E2ECFD;color:var(--brand-700);}
.btn-block{width:100%;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-600);}
.link-arrow i{font-size:12px;transition:transform .25s ease;}
.link-arrow:hover i{transform:translateX(3px);}

/* ============ 顶部公告 ============ */
.announce-bar{background:var(--brand-50);border-bottom:1px solid rgba(35,82,158,.08);}
.announce-inner{display:flex;align-items:center;gap:10px;min-height:40px;font-size:13px;color:var(--brand-700);}
.announce-inner i{color:var(--accent-500);}
.announce-close{margin-left:auto;width:28px;height:28px;border:0;background:transparent;color:var(--ink-600);border-radius:8px;display:grid;place-items:center;cursor:pointer;transition:background .2s ease;}
.announce-close:hover{background:rgba(35,82,158,.08);color:var(--brand-700);}

/* ============ 导航 ============ */
.site-header{position:sticky;top:0;z-index:1030;background:var(--bg);padding:12px 0;transition:padding .25s ease;}
.nav-panel{
  display:flex;align-items:center;gap:18px;
  background:var(--surface);border:1px solid rgba(35,82,158,.08);
  border-radius:var(--radius-card);padding:10px 16px;min-height:76px;
  box-shadow:0 2px 6px rgba(22,32,46,.04),0 10px 24px rgba(35,82,158,.06);
  transition:min-height .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{padding:8px 0;}
.site-header.is-scrolled .nav-panel{min-height:64px;box-shadow:0 4px 12px rgba(22,32,46,.07),0 14px 32px rgba(35,82,158,.10);}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{display:grid;grid-template-columns:repeat(2,7px);gap:3px;}
.brand-mark i{display:block;width:7px;height:7px;border-radius:2px;background:var(--brand-600);}
.brand-mark i:nth-child(2){background:var(--accent-500);}
.brand-mark i:nth-child(3){background:var(--teal-500);}
.brand-text{font-size:19px;font-weight:700;color:var(--brand-700);line-height:1.2;white-space:nowrap;}
.nav-cards{display:flex;gap:8px;margin-left:auto;}
.nav-card{
  display:flex;align-items:center;gap:9px;padding:7px 11px;border-radius:12px;
  background:var(--bg);border:1px solid transparent;transition:all .25s ease;
}
.nav-card:hover{background:var(--brand-50);border-color:rgba(35,82,158,.35);color:var(--brand-600);}
.nav-card.active{background:var(--brand-50);border-color:var(--brand-500);}
.nav-card-ico{
  width:30px;height:30px;border-radius:10px;background:#fff;color:var(--brand-600);
  display:grid;place-items:center;font-size:13px;flex-shrink:0;
  box-shadow:0 1px 3px rgba(22,32,46,.07);
}
.nav-card-txt{display:flex;flex-direction:column;line-height:1.2;min-width:0;}
.nav-card-txt strong{font-size:14px;font-weight:600;color:var(--ink-900);white-space:nowrap;}
.nav-card-txt em{font-style:normal;font-size:12px;color:var(--ink-600);white-space:nowrap;display:none;}
@media (min-width:1440px){.nav-card-txt em{display:block;}}
.nav-actions{display:flex;align-items:center;gap:14px;flex-shrink:0;}
.btn-ghost-link{font-size:14px;font-weight:600;color:var(--brand-600);display:inline-flex;align-items:center;gap:5px;}
.btn-ghost-link:hover{color:var(--brand-700);}
.nav-toggle{
  margin-left:auto;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:#fff;color:var(--brand-700);display:grid;place-items:center;font-size:16px;cursor:pointer;
  transition:all .25s ease;
}
.nav-toggle:hover{background:var(--brand-50);border-color:var(--brand-500);}
.mobile-nav{width:340px;max-width:88vw;border-left:1px solid var(--line);}
.mobile-nav .offcanvas-header{border-bottom:1px solid var(--line);padding:16px 20px;}
.mobile-nav .offcanvas-body{padding:16px 20px 28px;display:flex;flex-direction:column;gap:10px;}
.m-nav-card{
  display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:12px;
  background:var(--bg);border:1px solid transparent;transition:all .25s ease;
}
.m-nav-card:hover,.m-nav-card.active{background:var(--brand-50);border-color:var(--brand-500);}
.m-nav-card .nav-card-ico{width:34px;height:34px;}
.m-nav-card span{display:flex;flex-direction:column;line-height:1.3;}
.m-nav-card strong{font-size:15px;color:var(--ink-900);}
.m-nav-card em{font-style:normal;font-size:12px;color:var(--ink-600);}
.m-nav-cta{margin-top:14px;}

/* ============ Hero ============ */
.hero{
  position:relative;padding:64px 0 56px;overflow:hidden;
  background:
    repeating-linear-gradient(0deg,rgba(35,82,158,.05) 0 1px,transparent 1px 40px),
    repeating-linear-gradient(90deg,rgba(35,82,158,.05) 0 1px,transparent 1px 40px),
    linear-gradient(180deg,#EEF4FE 0%,#F6F8FC 100%);
}
.hero::after{
  content:"";position:absolute;right:-140px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(35,82,158,.12),transparent 68%);pointer-events:none;
}
.hero-inner{position:relative;z-index:2;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid rgba(35,82,158,.16);
  color:var(--brand-600);font-size:13px;font-weight:600;border-radius:999px;padding:6px 14px;margin-bottom:20px;
  box-shadow:0 2px 8px rgba(35,82,158,.08);
}
.hero-tag .dot{width:7px;height:7px;border-radius:50%;background:var(--teal-500);}
.hero h1{font-size:40px;line-height:1.25;color:var(--ink-900);margin-bottom:18px;}
.hero h1 span{color:var(--brand-600);}
.hero-sub{font-size:16px;line-height:1.8;color:var(--ink-600);max-width:600px;margin-bottom:28px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:36px;}
.stat{display:flex;flex-direction:column;}
.stat-num{font-size:24px;font-weight:700;color:var(--brand-600);line-height:1.3;font-variant-numeric:tabular-nums;}
.stat-num em{font-style:normal;font-size:14px;font-weight:600;margin-left:2px;}
.stat-label{font-size:12px;color:var(--ink-600);}
.hero-visual{position:relative;}
.hero-img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius-img);
  box-shadow:0 18px 40px rgba(23,56,111,.18);background:#DCE6F7;
}
.hero-ribbon{
  position:absolute;left:16px;top:16px;background:var(--accent-500);color:#fff;
  font-size:12px;font-weight:700;border-radius:999px;padding:6px 14px;
  box-shadow:0 8px 18px rgba(255,138,43,.35);
}

/* ============ 通用区块 ============ */
.section{padding:80px 0;}
.section--white{background:var(--surface);}
.section--tight{padding:56px 0;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none;}
.eyebrow{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;
  color:var(--brand-600);background:var(--brand-50);border-radius:999px;padding:4px 12px;margin-bottom:12px;
}
.section-head h2{font-size:28px;line-height:1.3;margin-bottom:10px;}
.section-head p{font-size:15px;color:var(--ink-600);}

/* ============ 优惠阶梯 ============ */
.ladder{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.ladder-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-card);transition:all .25s ease;
}
.ladder-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.ladder-card--top{border:1.5px solid var(--accent-500);background:linear-gradient(180deg,#FFF8F1 0%,#FFFFFF 42%);}
.ladder-badge{
  position:absolute;right:16px;top:-12px;background:var(--accent-500);color:#fff;
  font-size:12px;font-weight:700;border-radius:999px;padding:4px 12px;
}
.ladder-top{display:flex;align-items:center;gap:10px;margin-bottom:12px;}
.ladder-no{
  width:34px;height:34px;border-radius:8px;background:var(--brand-50);color:var(--brand-600);
  display:grid;place-items:center;font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;flex-shrink:0;
}
.ladder-card--top .ladder-no{background:var(--accent-50);color:var(--accent-600);}
.ladder-tier{font-size:17px;font-weight:700;color:var(--ink-900);}
.ladder-threshold{font-size:13px;color:var(--brand-600);background:var(--brand-50);border-radius:8px;padding:6px 10px;margin-bottom:14px;font-variant-numeric:tabular-nums;}
.ladder-card--top .ladder-threshold{background:var(--accent-50);color:var(--accent-600);}
.ladder-list{display:flex;flex-direction:column;gap:9px;}
.ladder-list li{display:flex;align-items:flex-start;gap:8px;font-size:14px;color:var(--ink-600);line-height:1.6;}
.ladder-list i{color:var(--teal-500);font-size:13px;margin-top:5px;flex-shrink:0;}

/* ============ 套餐对比矩阵 ============ */
.plan-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:var(--radius-card);}
.plan-matrix{
  display:grid;grid-template-columns:190px repeat(3,minmax(210px,1fr));
  min-width:880px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);
}
.plan-cell{padding:16px 20px;border-bottom:1px solid var(--line);border-right:1px solid var(--line);font-size:14px;color:var(--ink-600);}
.plan-cell:nth-child(4n){border-right:0;}
.plan-matrix > .plan-cell:nth-last-child(-n+4){border-bottom:0;}
.plan-label{
  position:sticky;left:0;z-index:2;background:#F8FAFD;font-weight:600;color:var(--ink-900);
  display:flex;align-items:center;min-height:56px;
}
.plan-head{background:#fff;display:flex;flex-direction:column;gap:10px;padding:22px 20px;min-height:190px;}
.plan-name{font-size:17px;font-weight:700;color:var(--ink-900);}
.plan-price{font-size:26px;font-weight:700;color:var(--brand-600);font-variant-numeric:tabular-nums;line-height:1.2;}
.plan-price em{font-style:normal;font-size:13px;font-weight:500;color:var(--ink-600);margin-left:4px;}
.plan-desc{font-size:13px;color:var(--ink-600);line-height:1.6;}
.plan-head--feature{background:var(--brand-50);}
.plan-head--feature .plan-price{color:var(--accent-600);}
.plan-value{display:flex;flex-direction:column;gap:6px;}
.plan-value span{display:flex;align-items:flex-start;gap:8px;line-height:1.6;}
.plan-value i{color:var(--brand-500);font-size:12px;margin-top:6px;flex-shrink:0;}
.plan-col-highlight{background:#FBFCFF;}
.plan-matrix > .plan-cell.plan-col-highlight{background:#FBFCFF;}

/* ============ 限时入口条 ============ */
.deadline-bar{
  display:flex;align-items:center;gap:24px;flex-wrap:wrap;
  background:var(--accent-50);border:1px solid rgba(255,138,43,.28);
  border-radius:var(--radius-card);padding:22px 28px;
}
.countdown{display:flex;align-items:center;gap:6px;flex-shrink:0;}
.cd-block{
  min-width:52px;height:52px;border-radius:8px;background:var(--accent-500);color:#fff;
  display:grid;place-items:center;font-size:22px;font-weight:700;
  font-variant-numeric:tabular-nums;box-shadow:0 8px 18px rgba(255,138,43,.28);
}
.cd-sep{color:var(--accent-600);font-weight:700;font-size:18px;}
.deadline-text{flex:1;min-width:240px;font-size:15px;color:var(--ink-900);line-height:1.7;}
.deadline-text strong{color:var(--accent-600);font-variant-numeric:tabular-nums;}

/* ============ 服务流程 ============ */
.flow-list{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;}
.flow-step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-card);transition:all .25s ease;}
.flow-step:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.flow-no{
  width:40px;height:40px;border-radius:8px;background:var(--brand-600);color:#fff;
  display:grid;place-items:center;font-size:15px;font-weight:700;margin-bottom:14px;
  font-variant-numeric:tabular-nums;
}
.flow-step h3{font-size:17px;margin-bottom:8px;}
.flow-step p{font-size:14px;color:var(--ink-600);line-height:1.7;}
.flow-step:not(:last-child)::after{
  content:"\f105";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:-19px;top:50%;transform:translateY(-50%);
  color:var(--brand-500);font-size:15px;z-index:2;
}

/* ============ 资讯列表 ============ */
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.chip{
  font-size:13px;font-weight:600;color:var(--ink-600);background:#fff;border:1px solid var(--line);
  border-radius:999px;padding:6px 16px;transition:all .25s ease;
}
.chip:hover{border-color:var(--brand-500);color:var(--brand-600);}
.chip.active{background:var(--brand-600);border-color:var(--brand-600);color:#fff;}
.news-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.news-item{grid-column:span 4;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);transition:all .25s ease;}
.news-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.news-item:nth-child(1){grid-column:span 6;}
.news-item:nth-child(2),
.news-item:nth-child(3){grid-column:span 3;}
.news-item:nth-child(n+4){grid-column:span 4;}
.news-link{display:flex;flex-direction:column;height:100%;color:inherit;}
.news-cover{display:block;position:relative;overflow:hidden;background:#DCE6F7;}
.news-cover img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .35s ease;}
.news-link:hover .news-cover img{transform:scale(1.04);}
.news-body{display:flex;flex-direction:column;gap:10px;padding:20px;flex:1;}
.badge-brand{
  align-self:flex-start;height:24px;line-height:24px;padding:0 10px;border-radius:999px;
  background:var(--brand-50);color:var(--brand-600);font-size:12px;font-weight:600;
}
.news-title{
  font-size:17px;font-weight:700;color:var(--ink-900);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-link:hover .news-title{color:var(--brand-600);}
.news-sum{
  font-size:14px;color:var(--ink-600);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{font-size:12px;color:var(--ink-600);margin-top:auto;font-variant-numeric:tabular-nums;}
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:14px;
  padding:56px 20px;background:#fff;border:1px dashed var(--line);border-radius:var(--radius-card);
}
.empty-state i{font-size:48px;color:rgba(35,82,158,.3);}
.empty-state p{font-size:15px;color:var(--ink-600);}

/* ============ 证据 / 服务承诺 ============ */
.proof-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.proof-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:26px;box-shadow:var(--shadow-card);transition:all .25s ease;}
.proof-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.proof-ico{
  width:44px;height:44px;border-radius:12px;background:var(--brand-50);color:var(--brand-600);
  display:grid;place-items:center;font-size:18px;margin-bottom:16px;
}
.proof-card h3{font-size:17px;margin-bottom:8px;}
.proof-card p{font-size:14px;color:var(--ink-600);line-height:1.7;}
.proof-metrics{display:flex;flex-wrap:wrap;gap:28px;margin-top:28px;}
.proof-metrics .stat-num{font-size:22px;}

/* ============ FAQ ============ */
.faq-accordion .accordion-item{
  border:1px solid var(--line);border-radius:12px;background:#fff;margin-bottom:12px;overflow:hidden;
  box-shadow:0 2px 6px rgba(22,32,46,.03);
}
.faq-accordion .accordion-button{
  background:#fff;border-radius:12px;box-shadow:none;
  font-size:16px;font-weight:600;color:var(--ink-900);
  padding:16px 20px;min-height:56px;gap:12px;
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--brand-700);background:#fff;box-shadow:none;}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:3px solid rgba(35,82,158,.22);}
.faq-accordion .accordion-button::after{
  flex-shrink:0;width:28px;height:28px;border-radius:8px;background-color:var(--brand-50);
  background-image:none;content:"+";display:flex;align-items:center;justify-content:center;
  color:var(--brand-600);font-size:17px;font-weight:700;transition:all .25s ease;
}
.faq-accordion .accordion-button:not(.collapsed)::after{content:"−";background-color:var(--brand-600);color:#fff;}
.faq-accordion .accordion-body{background:#F8FAFD;font-size:15px;line-height:1.8;color:var(--ink-600);padding:16px 20px 20px;border-top:1px solid var(--line);}

/* ============ 表单 ============ */
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow-card);}
.form-card h2{font-size:24px;margin-bottom:8px;}
.form-note{font-size:13px;color:var(--ink-600);line-height:1.7;margin-bottom:22px;}
.form-label{font-size:14px;font-weight:600;color:var(--ink-900);margin-bottom:6px;}
.form-control,.form-select{
  height:44px;border-radius:var(--radius-btn);border:1px solid var(--line);
  font-size:15px;color:var(--ink-900);padding:0 14px;background-color:#fff;transition:all .2s ease;
}
textarea.form-control{height:auto;min-height:110px;padding:12px 14px;line-height:1.7;resize:vertical;}
.form-control:focus,.form-select:focus{
  border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(35,82,158,.12);outline:none;
}
.form-select{cursor:pointer;}
.form-check-input{width:18px;height:18px;margin-top:4px;border-color:var(--line);}
.form-check-input:checked{background-color:var(--brand-600);border-color:var(--brand-600);}
.form-check-input:focus{box-shadow:0 0 0 3px rgba(35,82,158,.12);border-color:var(--brand-500);}
.form-check-label{font-size:14px;color:var(--ink-600);line-height:1.7;}
.form-msg{font-size:14px;color:var(--teal-500);font-weight:600;display:none;}
.form-msg.show{display:block;}
.side-card{background:var(--brand-700);border-radius:var(--radius-card);padding:28px;color:#fff;height:100%;}
.side-card h3{font-size:18px;color:#fff;margin-bottom:18px;}
.side-list{display:flex;flex-direction:column;gap:16px;}
.side-list li{display:flex;gap:12px;align-items:flex-start;}
.side-list i{color:var(--accent-500);font-size:15px;margin-top:6px;flex-shrink:0;}
.side-list strong{display:block;font-size:15px;color:#fff;margin-bottom:2px;}
.side-list span{font-size:13px;color:rgba(255,255,255,.78);line-height:1.7;}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-700);color:rgba(255,255,255,.8);padding:64px 0 0;margin-top:0;}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark i{background:#fff;}
.footer-brand .brand-mark i:nth-child(2){background:var(--accent-500);}
.footer-brand .brand-mark i:nth-child(3){background:var(--teal-500);}
.footer-brand-text{font-size:19px;font-weight:700;color:#fff;}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);margin-bottom:20px;}
.qr-box{width:120px;height:120px;border-radius:12px;background:rgba(255,255,255,.08);border:1px dashed rgba(255,255,255,.28);display:grid;place-items:center;gap:6px;text-align:center;padding:10px;}
.qr-box i{font-size:26px;color:rgba(255,255,255,.6);}
.qr-box span{font-size:12px;color:rgba(255,255,255,.6);line-height:1.4;}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.8);transition:all .2s ease;display:inline-block;}
.footer-links a:hover{color:#fff;transform:translateX(2px);}
.footer-contact{display:flex;flex-direction:column;gap:12px;}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:rgba(255,255,255,.8);line-height:1.7;}
.footer-contact i{color:var(--accent-500);margin-top:6px;flex-shrink:0;}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.14);padding:20px 0;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.62);
}
.footer-bottom a{color:rgba(255,255,255,.72);}
.footer-bottom a:hover{color:#fff;}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:12px;
  border:1px solid rgba(35,82,158,.2);background:var(--brand-50);color:var(--brand-600);
  display:grid;place-items:center;font-size:15px;cursor:pointer;z-index:1040;
  opacity:0;pointer-events:none;transition:all .25s ease;
}
.to-top.show{opacity:1;pointer-events:auto;}
.to-top:hover{background:var(--brand-600);color:#fff;transform:translateY(-2px);}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .ladder{grid-template-columns:repeat(2,1fr);}
  .flow-list{grid-template-columns:repeat(2,1fr);}
  .flow-step:not(:last-child)::after{display:none;}
}
@media (max-width:991.98px){
  .hero{padding:44px 0 40px;}
  .hero h1{font-size:28px;}
  .hero-sub{font-size:15px;}
  .hero-visual{margin-top:32px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:32px;}
  .section-head--row{flex-direction:column;align-items:flex-start;gap:12px;}
  .news-item,
  .news-item:nth-child(1),
  .news-item:nth-child(2),
  .news-item:nth-child(3),
  .news-item:nth-child(n+4){grid-column:span 12;}
  .proof-grid{grid-template-columns:1fr;}
  .hero-stats{gap:24px;}
}
@media (max-width:767.98px){
  .ladder{grid-template-columns:1fr;}
  .flow-list{grid-template-columns:1fr;}
  .deadline-bar{padding:18px 20px;gap:16px;}
  .cd-block{min-width:44px;height:44px;font-size:19px;}
  .form-card{padding:20px;}
  .side-card{padding:22px;}
  .plan-matrix{min-width:760px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:575.98px){
  .hero h1{font-size:26px;}
  .section-head h2{font-size:24px;}
  .news-body{padding:16px;}
}

/* roulang page: article */
:root{
  --brand-600:#23529E;
  --brand-700:#17386F;
  --brand-500:#3A6FC4;
  --brand-50:#EEF4FE;
  --accent-500:#FF8A2B;
  --accent-600:#E9740F;
  --accent-50:#FFF3E8;
  --teal-500:#16B8A8;
  --teal-50:#E6F8F6;
  --ink-900:#16202E;
  --ink-600:#5B6B80;
  --line:#E3E9F2;
  --surface:#FFFFFF;
  --bg:#F6F8FC;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --sh-card:0 2px 6px rgba(22,32,46,.04),0 12px 28px rgba(35,82,158,.08);
  --sh-card-hover:0 6px 14px rgba(22,32,46,.06),0 18px 38px rgba(35,82,158,.14);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-900);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding-left:1.25em;}
img{max-width:100%;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease,transform .2s ease;}
a:hover{color:var(--brand-500);}
button{font:inherit;}
:focus-visible{outline:3px solid rgba(35,82,158,.28);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1400px){.container{max-width:1280px;}}
.skip-link{position:absolute;left:-9999px;top:0;z-index:2000;background:var(--brand-600);color:#fff;padding:10px 18px;border-radius:0 0 10px 0;}
.skip-link:focus{left:0;color:#fff;}

/* ---------- 按钮 ---------- */
.btn-accent,.btn-outline,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  transition:all .22s ease;border:1.5px solid transparent;white-space:nowrap;
}
.btn-accent{background:var(--accent-500);border-color:var(--accent-500);color:#fff;}
.btn-accent:hover{background:var(--accent-600);border-color:var(--accent-600);color:#fff;transform:translateY(-1px);box-shadow:0 10px 20px rgba(233,116,15,.24);}
.btn-accent:active{transform:translateY(0);box-shadow:none;}
.btn-outline{background:#fff;border-color:var(--brand-600);color:var(--brand-600);}
.btn-outline:hover{background:var(--brand-50);color:var(--brand-700);transform:translateY(-1px);}
.btn-outline:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:transparent;color:var(--brand-600);padding:0 10px;height:44px;}
.btn-ghost:hover{background:var(--brand-50);color:var(--brand-700);}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand-600);}
.btn-text i{transition:transform .2s ease;}
.btn-text:hover i{transform:translateX(3px);}

/* ---------- 徽章 ---------- */
.badge-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;}
.badge-limit{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;background:var(--accent-500);color:#fff;font-size:12px;font-weight:600;}
.badge-status{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;background:var(--teal-50);color:#0E8A7D;font-size:12px;font-weight:600;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;background:#fff;
  border-bottom:1px solid rgba(35,82,158,.08);transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(22,32,46,.07);}
.nav-shell{display:flex;align-items:center;gap:16px;height:76px;transition:height .25s ease;}
.site-header.is-scrolled .nav-shell{height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--brand-600);
  display:grid;grid-template-columns:repeat(3,1fr);gap:3px;padding:8px;flex:0 0 auto;
}
.brand-mark i{display:block;background:#fff;border-radius:2px;align-self:end;}
.brand-mark i:nth-child(1){height:50%;}
.brand-mark i:nth-child(2){height:100%;background:var(--accent-500);}
.brand-mark i:nth-child(3){height:72%;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;font-size:18px;font-weight:700;color:var(--ink-900);}
.brand-text em{font-style:normal;font-size:12px;font-weight:400;color:var(--ink-600);letter-spacing:0;}
.nav-cards{display:flex;align-items:center;gap:8px;margin-left:auto;list-style:none;padding:0;}
.nav-card{
  display:flex;align-items:center;gap:9px;padding:8px 12px;border-radius:12px;
  background:#F7F9FD;border:1px solid transparent;transition:all .22s ease;min-width:0;
}
.nav-card:hover{background:var(--brand-50);border-color:rgba(35,82,158,.35);transform:translateY(-1px);}
.nav-card.active{background:var(--brand-50);border-color:var(--brand-600);}
.nav-card-ico{
  width:30px;height:30px;border-radius:9px;background:#fff;color:var(--brand-600);
  display:grid;place-items:center;font-size:13px;border:1px solid var(--line);flex:0 0 auto;
}
.nav-card-txt{display:flex;flex-direction:column;line-height:1.25;min-width:0;}
.nav-card-txt strong{font-size:14px;font-weight:600;color:var(--ink-900);white-space:nowrap;}
.nav-card-txt em{font-style:normal;font-size:12px;color:var(--ink-600);white-space:nowrap;}
.nav-cta{display:flex;align-items:center;gap:6px;flex:0 0 auto;}
.nav-toggle{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:var(--brand-50);
  color:var(--brand-600);display:grid;place-items:center;margin-left:auto;font-size:17px;cursor:pointer;
}
.nav-toggle:hover{background:#E1EBFC;}
@media (max-width:1199.98px){
  .nav-card{padding:8px 10px;}
  .nav-card-txt em{display:none;}
  .nav-cta .btn-ghost{display:none;}
}
@media (max-width:991.98px){
  .nav-shell{height:66px;}
  .brand-text{font-size:16px;}
  .brand-text em{display:none;}
}
.mobile-nav .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.mobile-nav .offcanvas-title{font-size:16px;font-weight:700;color:var(--ink-900);}
.mobile-nav .offcanvas-body{padding:18px 20px 26px;}
.m-nav-list{display:flex;flex-direction:column;gap:10px;}
.m-nav-item{display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:12px;background:#F7F9FD;border:1px solid transparent;transition:all .2s ease;}
.m-nav-item:hover{background:var(--brand-50);border-color:rgba(35,82,158,.3);}
.m-nav-item .nav-card-ico{width:34px;height:34px;}
.m-nav-item strong{display:block;font-size:15px;color:var(--ink-900);}
.m-nav-item em{font-style:normal;font-size:12px;color:var(--ink-600);}
.m-nav-cta{margin-top:18px;display:flex;flex-direction:column;gap:10px;}

/* ---------- 文章头部 ---------- */
.article-head{
  position:relative;background:var(--brand-50);border-bottom:1px solid var(--line);
  padding:24px 0 42px;overflow:hidden;
}
.article-head::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.85;
  background-image:linear-gradient(rgba(35,82,158,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(35,82,158,.05) 1px,transparent 1px);
  background-size:44px 44px;
}
.article-head .container{position:relative;z-index:1;}
.crumb{font-size:13px;color:var(--ink-600);display:flex;flex-wrap:wrap;align-items:center;gap:6px;}
.crumb a{color:var(--ink-600);}
.crumb a:hover{color:var(--brand-600);}
.crumb .sep{color:#B7C5D8;}
.crumb .cat{color:var(--ink-600);}
.crumb .current{color:var(--brand-600);max-width:460px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-title{font-size:36px;line-height:1.28;font-weight:700;color:var(--ink-900);margin:16px 0 18px;max-width:920px;}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;font-size:14px;color:var(--ink-600);}
.meta-item{display:inline-flex;align-items:center;gap:7px;}
.meta-item i{color:var(--brand-600);}
.meta-item b{color:var(--brand-700);font-weight:600;}
.share-group{margin-left:auto;display:flex;gap:8px;}
.share-btn{
  width:38px;height:38px;border-radius:10px;border:1px solid rgba(35,82,158,.18);background:#fff;
  color:var(--ink-600);display:grid;place-items:center;cursor:pointer;transition:all .2s ease;
}
.share-btn:hover{color:var(--brand-600);border-color:var(--brand-600);background:#fff;transform:translateY(-1px);}
@media (max-width:767.98px){
  .article-title{font-size:26px;line-height:1.35;}
  .article-head{padding:18px 0 30px;}
  .crumb .current{max-width:220px;}
}

/* ---------- 正文区 ---------- */
.article-section{padding:44px 0 20px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:32px;}
@media (min-width:1200px){
  .article-layout{grid-template-columns:minmax(0,820px) 276px;justify-content:center;gap:48px;}
}
.toc-mobile{margin-bottom:20px;}
@media (min-width:1200px){.toc-mobile{display:none;}}
.toc-mobile summary{
  list-style:none;cursor:pointer;background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:14px 18px;font-size:15px;font-weight:600;color:var(--brand-700);display:flex;align-items:center;gap:10px;
  box-shadow:var(--sh-card);
}
.toc-mobile summary::-webkit-details-marker{display:none;}
.toc-mobile summary i{color:var(--brand-600);}
.toc-mobile[open] summary{border-radius:14px 14px 0 0;}
.toc-mobile .toc-list{border:1px solid var(--line);border-top:none;border-radius:0 0 14px 14px;background:#fff;padding:10px 0;border-left:1px solid var(--line);}
.article-body{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:38px 42px;min-width:0;
}
@media (max-width:767.98px){.article-body{padding:24px 18px;}}
.article-body > * + *{margin-top:1.4em;}
.article-body p{font-size:16px;line-height:1.9;color:#26313F;overflow-wrap:anywhere;}
.article-body h2{
  font-size:24px;line-height:1.4;font-weight:700;color:var(--ink-900);
  padding-left:14px;border-left:4px solid var(--brand-600);margin-top:2.2em;scroll-margin-top:96px;
}
.article-body h3{font-size:19px;line-height:1.45;font-weight:700;color:var(--brand-700);margin-top:1.8em;scroll-margin-top:96px;}
.article-body h2:first-child,.article-body h3:first-child{margin-top:0;}
.article-body ul,.article-body ol{padding-left:1.4em;}
.article-body li{margin:.5em 0;color:#26313F;}
.article-body li::marker{color:var(--brand-600);}
.article-body blockquote{
  padding:16px 20px;background:var(--brand-50);border-left:4px solid var(--brand-600);
  border-radius:0 12px 12px 0;color:#22334A;font-size:15px;
}
.article-body blockquote p{margin:0;font-size:15px;}
.article-body img{border-radius:var(--r-img);margin:1.6em auto;box-shadow:0 6px 18px rgba(22,32,46,.08);height:auto;}
.article-body figure{margin:1.8em 0;}
.article-body figure img{margin:0 auto;}
.article-body figcaption{text-align:center;font-size:13px;color:var(--ink-600);margin-top:10px;}
.article-body a{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--brand-500);}
.article-body table{width:100%;border-collapse:collapse;margin:1.8em 0;font-size:15px;display:block;overflow-x:auto;}
.article-body thead th{background:var(--brand-50);color:var(--brand-700);font-weight:600;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;min-width:120px;}
.article-body tbody tr:nth-child(even){background:#FAFBFE;}
.article-body hr{border:none;border-top:1px solid var(--line);margin:2em 0;}
.article-body code{background:var(--brand-50);color:var(--brand-700);padding:2px 6px;border-radius:6px;font-size:14px;}

/* ---------- 目录 ---------- */
.article-aside{display:none;}
@media (min-width:1200px){.article-aside{display:block;}}
.toc-card{
  position:sticky;top:96px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-card);padding:20px;
}
.toc-title{font-size:15px;font-weight:700;color:var(--ink-900);margin-bottom:12px;display:flex;align-items:center;gap:8px;}
.toc-title i{color:var(--brand-600);}
.toc-list{list-style:none;margin:0;padding:0;border-left:2px solid var(--line);}
.toc-list li{margin:0;}
.toc-list a{
  display:block;padding:7px 12px;font-size:14px;color:var(--ink-600);line-height:1.55;
  border-left:2px solid transparent;margin-left:-2px;transition:all .2s ease;
}
.toc-list a:hover{color:var(--brand-600);background:var(--brand-50);}
.toc-list a.active{color:var(--brand-600);border-left-color:var(--brand-600);font-weight:600;background:var(--brand-50);}

/* ---------- 空态 ---------- */
.empty-state{text-align:center;padding:56px 20px;}
.empty-state i{font-size:48px;color:rgba(35,82,158,.3);}
.empty-state p{font-size:15px;color:var(--ink-600);margin:16px 0 22px;}

/* ---------- 文末导航 ---------- */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px;}
@media (max-width:767.98px){.post-nav{grid-template-columns:1fr;}}
.post-nav-card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:16px 18px;transition:all .25s ease;
}
.post-nav-card:hover{border-color:var(--brand-600);box-shadow:var(--sh-card-hover);transform:translateY(-2px);color:inherit;}
.post-nav-card .pn-label{display:block;font-size:12px;font-weight:600;color:var(--brand-600);margin-bottom:6px;}
.post-nav-card strong{display:block;font-size:15px;font-weight:600;color:var(--ink-900);line-height:1.6;}
.post-nav-back{margin-top:22px;}

/* ---------- 相关推荐 ---------- */
.related-section{padding:56px 0 20px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:26px;flex-wrap:wrap;}
.section-head h2{font-size:26px;line-height:1.3;font-weight:700;color:var(--ink-900);}
.section-head .sub{font-size:14px;color:var(--ink-600);margin-top:6px;}
.card-grid{display:grid;grid-template-columns:1fr;gap:24px;}
@media (min-width:576px){.card-grid{grid-template-columns:1fr 1fr;}}
@media (min-width:992px){.card-grid{grid-template-columns:repeat(3,1fr);}}
.news-card{
  display:flex;flex-direction:column;height:100%;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);transition:all .25s ease;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-card-hover);color:inherit;}
.news-media{position:relative;aspect-ratio:4/3;overflow:hidden;background:#E8EEF8;}
.news-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.news-card:hover .news-media img{transform:scale(1.04);}
.news-media .badge-cat{position:absolute;left:12px;top:12px;background:#fff;}
.news-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;}
.news-body h3{font-size:18px;line-height:1.5;font-weight:600;color:var(--ink-900);}
.news-body p{font-size:14px;line-height:1.75;color:var(--ink-600);}
.news-body .news-more{margin-top:auto;font-size:14px;font-weight:600;color:var(--brand-600);display:inline-flex;align-items:center;gap:6px;}
.news-card:hover .news-more i{transform:translateX(3px);}
.news-body .news-more i{transition:transform .2s ease;}

/* ---------- 通栏 CTA ---------- */
.cta-section{padding:56px 0 0;}
.cta-bar{
  background:var(--accent-50);border:1px solid #FFE0C2;border-radius:16px;
  padding:22px 26px;display:flex;align-items:center;flex-wrap:wrap;gap:18px;
}
.cta-timer{display:flex;gap:6px;flex:0 0 auto;}
.cta-timer span{
  min-width:44px;height:44px;border-radius:10px;background:#fff;border:1px solid #FFD6AE;
  display:grid;place-items:center;font-size:18px;font-weight:700;color:var(--accent-600);
}
.cta-text{min-width:200px;}
.cta-text strong{display:block;font-size:17px;font-weight:700;color:var(--ink-900);line-height:1.5;}
.cta-text span{font-size:14px;color:var(--ink-600);}
.cta-bar .btn-accent{margin-left:auto;}
@media (max-width:767.98px){
  .cta-bar{padding:20px;}
  .cta-bar .btn-accent{margin-left:0;width:100%;}
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-700);color:rgba(255,255,255,.8);padding:56px 0 0;font-size:14px;margin-top:72px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.site-footer .brand-mark{background:rgba(255,255,255,.14);}
.footer-brand-text{font-size:18px;font-weight:700;color:#fff;}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);margin-bottom:18px;}
.qr-box{
  display:flex;align-items:center;gap:12px;background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.16);border-radius:12px;padding:12px 16px;width:fit-content;
}
.qr-box i{font-size:38px;color:#fff;}
.qr-box span{font-size:13px;line-height:1.6;color:rgba(255,255,255,.8);}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:14px;}
.footer-links{display:flex;flex-direction:column;gap:9px;}
.footer-links a{color:rgba(255,255,255,.72);font-size:14px;transition:all .2s ease;}
.footer-links a:hover{color:#fff;transform:translateX(2px);}
.footer-contact{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px;}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:rgba(255,255,255,.75);line-height:1.7;}
.footer-contact i{color:var(--accent-500);margin-top:5px;}
.footer-contact a{color:rgba(255,255,255,.85);}
.footer-contact a:hover{color:#fff;}
.footer-bottom{
  margin-top:44px;border-top:1px solid rgba(255,255,255,.14);padding:18px 0;
  display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.6);
}

/* ---------- 回到顶部 ---------- */
.back-top{
  position:fixed;right:20px;bottom:24px;width:44px;height:44px;border-radius:12px;
  background:var(--brand-50);color:var(--brand-600);border:1px solid rgba(35,82,158,.22);
  display:grid;place-items:center;cursor:pointer;z-index:1040;
  opacity:0;visibility:hidden;transition:all .25s ease;
}
.back-top.show{opacity:1;visibility:visible;}
.back-top:hover{background:var(--brand-600);color:#fff;border-color:var(--brand-600);}

/* roulang page: category1 */
:root{
  --brand-600:#23529E;
  --brand-700:#17386F;
  --brand-500:#3A6FC4;
  --brand-50:#EEF4FE;
  --accent-500:#FF8A2B;
  --accent-600:#F07815;
  --accent-50:#FFF3E8;
  --teal-500:#16B8A8;
  --teal-50:#E6F8F6;
  --teal-700:#0E7E73;
  --ink-900:#16202E;
  --ink-600:#5B6B80;
  --line:#E3E9F2;
  --surface:#FFFFFF;
  --bg:#F6F8FC;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-card:0 2px 6px rgba(22,32,46,.04),0 12px 28px rgba(35,82,158,.08);
  --shadow-hover:0 6px 14px rgba(22,32,46,.06),0 18px 36px rgba(35,82,158,.14);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-900);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-500);}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;letter-spacing:0;}
h1{font-size:40px;line-height:1.25;}
h2{font-size:28px;line-height:1.3;}
h3{font-size:20px;line-height:1.4;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(35,82,158,.35);outline-offset:2px;}
.num,.plan-price,.tier-no,.flash-timer span,.hero-stats strong,.footer-contact{font-variant-numeric:tabular-nums;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1400px){.container{max-width:1280px;}}

/* ============ 顶部导航 ============ */
.site-header{position:sticky;top:0;z-index:1030;padding:10px 0 6px;background:rgba(246,248,252,.92);backdrop-filter:none;transition:padding .25s ease;}
.site-header.is-scrolled{padding:6px 0 4px;}
.header-inner{
  display:flex;align-items:center;gap:16px;
  background:var(--surface);
  border:1px solid rgba(35,82,158,.08);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:12px 18px;
  transition:padding .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled .header-inner{padding:8px 18px;box-shadow:var(--shadow-hover);}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none;}
.brand-mark{display:inline-grid;grid-template-columns:repeat(3,5px);gap:3px;align-items:end;height:22px;}
.brand-mark i{display:block;background:var(--brand-600);border-radius:2px;}
.brand-mark i:nth-child(1){height:10px;}
.brand-mark i:nth-child(2){height:22px;background:var(--accent-500);}
.brand-mark i:nth-child(3){height:15px;}
.brand-text{font-size:19px;font-weight:700;color:var(--brand-700);white-space:nowrap;}
.nav-cards{display:flex;gap:8px;align-items:stretch;margin-left:auto;}
.nav-card{
  display:flex;align-items:center;gap:8px;
  padding:8px 10px;border-radius:12px;
  background:var(--brand-50);border:1px solid transparent;
  text-decoration:none;transition:all .22s ease;white-space:nowrap;
}
.nav-card:hover{background:#fff;border-color:var(--brand-500);box-shadow:0 6px 16px rgba(35,82,158,.12);transform:translateY(-1px);}
.nav-card.active{background:#fff;border-color:var(--brand-500);box-shadow:0 6px 16px rgba(35,82,158,.16);}
.nav-card-ico{width:30px;height:30px;border-radius:9px;background:#fff;color:var(--brand-600);display:grid;place-items:center;font-size:13px;flex:0 0 auto;}
.nav-card.active .nav-card-ico{background:var(--brand-600);color:#fff;}
.nav-card-txt{display:flex;flex-direction:column;line-height:1.25;}
.nav-card-txt strong{font-size:13px;font-weight:600;color:var(--ink-900);}
.nav-card-txt em{font-size:12px;font-style:normal;color:var(--ink-600);}
@media (max-width:1399.98px){.nav-card-txt em{display:none;}}
.header-actions{display:flex;align-items:center;gap:14px;margin-left:auto;flex:0 0 auto;}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-600);}
.link-more i{transition:transform .22s ease;font-size:12px;}
.link-more:hover i{transform:translateX(3px);}
.nav-toggle{width:44px;height:44px;border-radius:10px;border:1.5px solid var(--line);background:#fff;color:var(--brand-700);font-size:16px;display:grid;place-items:center;cursor:pointer;transition:all .2s ease;}
.nav-toggle:hover{border-color:var(--brand-500);color:var(--brand-600);}
.mobile-nav{width:min(340px,88vw);}
.mobile-nav .offcanvas-header{border-bottom:1px solid var(--line);padding:16px 18px;align-items:center;}
.mobile-nav .btn-close{width:44px;height:44px;margin:0;border-radius:10px;}
.mobile-nav .offcanvas-body{padding:16px 18px;}
.m-nav-card{display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:12px;border:1px solid var(--line);background:#fff;margin-bottom:10px;transition:all .22s ease;}
.m-nav-card:hover,.m-nav-card.active{border-color:var(--brand-500);background:var(--brand-50);}
.m-nav-card .nav-card-ico{background:var(--brand-50);}
.m-nav-card.active .nav-card-ico{background:var(--brand-600);color:#fff;}
.m-nav-card .nav-card-txt strong{font-size:14px;}
.m-nav-card .nav-card-txt em{font-size:12px;}
.mobile-nav .offcanvas-foot{border-top:1px solid var(--line);padding:16px 18px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1.5px solid transparent;cursor:pointer;
  transition:transform .22s ease,background-color .22s ease,box-shadow .22s ease,color .22s ease,border-color .22s ease;
}
.btn-accent{background:var(--accent-500);color:#fff;}
.btn-accent:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);box-shadow:0 12px 24px rgba(255,138,43,.28);}
.btn-accent:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:#fff;border-color:var(--brand-600);color:var(--brand-600);}
.btn-ghost:hover{background:var(--brand-50);color:var(--brand-700);transform:translateY(-1px);box-shadow:0 10px 20px rgba(35,82,158,.12);}
.btn-ghost:active{transform:translateY(0);box-shadow:none;}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn:disabled,.btn.disabled{opacity:.45;pointer-events:none;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-600);}
.link-arrow i{font-size:12px;transition:transform .22s ease;}
.link-arrow:hover i{transform:translateX(3px);}

/* ============ 徽章 ============ */
.badge-soft{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;background:var(--brand-50);color:var(--brand-600);font-size:12.5px;font-weight:600;}
.badge-flash{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;background:var(--accent-500);color:#fff;font-size:12.5px;font-weight:600;}
.badge-state{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;background:var(--teal-50);color:var(--teal-700);font-size:12.5px;font-weight:600;}

/* ============ 面包屑 ============ */
.breadcrumb-bar{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-600);margin-bottom:22px;flex-wrap:wrap;}
.breadcrumb-bar a{color:var(--ink-600);}
.breadcrumb-bar a:hover{color:var(--brand-600);}
.breadcrumb-bar .sep{color:#A9B6C7;}
.breadcrumb-bar .current{color:var(--brand-600);font-weight:600;}

/* ============ 首屏 ============ */
.page-hero{
  padding:40px 0 64px;
  background:
    linear-gradient(180deg,rgba(238,244,254,.9) 0%,rgba(246,248,252,0) 100%),
    repeating-linear-gradient(90deg,rgba(35,82,158,.045) 0 1px,transparent 1px 64px),
    repeating-linear-gradient(0deg,rgba(35,82,158,.045) 0 1px,transparent 1px 64px);
}
.page-hero h1{font-size:38px;margin:16px 0 14px;}
.hero-sub{font-size:17px;color:var(--ink-600);max-width:620px;margin-bottom:26px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:14px;}
.hero-stats > div{
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:12px 18px;min-width:132px;box-shadow:0 2px 6px rgba(22,32,46,.03);
}
.hero-stats strong{display:block;font-size:24px;line-height:1.2;color:var(--brand-600);}
.hero-stats span{font-size:12.5px;color:var(--ink-600);}
.hero-media{position:relative;border-radius:var(--radius-img);overflow:hidden;box-shadow:var(--shadow-card);}
.hero-media img{width:100%;aspect-ratio:16 / 11;object-fit:cover;background:#E7EDF8;}
.media-tag{
  position:absolute;top:14px;left:14px;
  background:var(--accent-500);color:#fff;font-size:12.5px;font-weight:600;
  padding:5px 12px;border-radius:999px;box-shadow:0 8px 18px rgba(255,138,43,.3);
}

/* ============ 板块通用 ============ */
.section{padding:80px 0;}
.section-alt{background:#fff;}
.section-head{max-width:760px;margin-bottom:38px;}
.section-head h2{margin-bottom:12px;}
.section-head p{color:var(--ink-600);font-size:16px;}
.section-head .badge-soft{margin-bottom:14px;}

/* ============ 优惠阶梯 ============ */
.tier-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.tier-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px 22px;box-shadow:var(--shadow-card);transition:transform .25s ease,box-shadow .25s ease;
  display:flex;flex-direction:column;
}
.tier-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.tier-card.is-featured{border-color:var(--accent-500);box-shadow:0 2px 6px rgba(22,32,46,.04),0 16px 32px rgba(255,138,43,.16);}
.tier-flag{position:absolute;top:-12px;right:18px;background:var(--accent-500);color:#fff;font-size:12px;font-weight:600;padding:4px 12px;border-radius:999px;}
.tier-no{
  display:grid;place-items:center;width:40px;height:40px;border-radius:10px;
  background:var(--brand-50);color:var(--brand-600);font-size:16px;font-weight:700;margin-bottom:16px;
}
.tier-card.is-featured .tier-no{background:var(--accent-50);color:var(--accent-600);}
.tier-card h3{font-size:19px;margin-bottom:6px;}
.tier-meta{font-size:13px;color:var(--ink-600);margin-bottom:16px;}
.tick-list{display:flex;flex-direction:column;gap:10px;margin-bottom:22px;}
.tick-list li{display:flex;gap:9px;align-items:flex-start;font-size:14.5px;color:var(--ink-600);line-height:1.6;}
.tick-list i{color:var(--teal-500);font-size:12px;margin-top:7px;flex:0 0 auto;}
.tier-card .link-arrow{margin-top:auto;}

/* ============ 套餐对比矩阵 ============ */
.matrix-scroll{overflow-x:auto;padding-bottom:6px;}
.matrix{min-width:860px;}
.matrix-row{
  display:grid;grid-template-columns:190px repeat(3,1fr);
  background:#fff;border:1px solid var(--line);border-radius:14px;
  overflow:hidden;margin-bottom:10px;
}
.matrix-row.is-head{margin-bottom:14px;box-shadow:var(--shadow-card);}
.matrix-cell{padding:16px 18px;border-right:1px solid var(--line);font-size:15px;color:var(--ink-600);display:flex;flex-direction:column;justify-content:center;gap:4px;}
.matrix-cell:last-child{border-right:0;}
.matrix-label{background:var(--brand-50);color:var(--brand-700);font-weight:600;font-size:14.5px;}
.matrix-cell.is-hot{background:rgba(255,243,232,.5);}
.matrix-row.is-head .matrix-cell{background:#fff;align-items:flex-start;padding:22px 18px;gap:8px;}
.matrix-row.is-head .matrix-label{background:var(--brand-50);align-items:center;}
.plan-name{font-size:17px;font-weight:700;color:var(--ink-900);}
.plan-price{font-size:27px;font-weight:700;line-height:1.1;color:var(--brand-600);}
.plan-cycle{font-size:12.5px;color:var(--ink-600);}
.matrix-row.is-head .matrix-cell.is-hot .plan-price{color:var(--accent-600);}
.plan-stack{display:grid;gap:16px;}
.plan-stack-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;box-shadow:var(--shadow-card);}
.plan-stack-card.is-hot{border-color:var(--accent-500);}
.plan-stack-card h3{display:flex;align-items:baseline;gap:10px;font-size:17px;margin-bottom:4px;}
.plan-stack-card .plan-price{font-size:24px;}
.stack-list{display:flex;flex-direction:column;gap:8px;margin:14px 0 16px;}
.stack-list li{display:grid;grid-template-columns:88px 1fr;gap:10px;font-size:14px;color:var(--ink-600);padding-bottom:8px;border-bottom:1px dashed var(--line);}
.stack-list li span:first-child{color:var(--brand-700);font-weight:600;}

/* ============ 限时入口条 ============ */
.flash-bar{
  display:flex;align-items:center;gap:24px;flex-wrap:wrap;
  background:var(--accent-50);
  border:1px solid rgba(255,138,43,.28);
  border-radius:var(--radius-card);
  padding:20px 26px;
}
.flash-timer{display:flex;align-items:flex-end;gap:6px;flex:0 0 auto;}
.flash-timer span{
  display:grid;place-items:center;min-width:46px;height:48px;padding:0 8px;
  background:var(--brand-700);color:#fff;border-radius:6px;
  font-size:20px;font-weight:700;line-height:1;
}
.flash-timer em{font-style:normal;font-size:12.5px;color:var(--ink-600);padding-bottom:6px;}
.flash-text{flex:1 1 320px;margin:0;font-size:15.5px;color:var(--ink-900);}
.flash-text strong{color:var(--accent-600);font-size:19px;}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto;}
.accordion-item{
  border:1px solid var(--line)!important;border-radius:14px!important;
  background:#fff;margin-bottom:12px;overflow:hidden;
  box-shadow:0 2px 6px rgba(22,32,46,.03);
}
.accordion-button{
  display:flex;align-items:center;gap:14px;
  font-size:16px;font-weight:600;color:var(--ink-900);
  background:#fff;padding:17px 20px;min-height:56px;box-shadow:none!important;
}
.accordion-button:not(.collapsed){background:var(--brand-50);color:var(--brand-700);}
.accordion-button:focus{box-shadow:none!important;background:var(--brand-50);}
.accordion-button::after{display:none;}
.faq-no{
  display:grid;place-items:center;width:26px;height:26px;flex:0 0 auto;
  border-radius:7px;background:var(--brand-600);color:#fff;font-size:12px;font-weight:700;
}
.faq-icon{margin-left:auto;font-size:13px;color:var(--brand-600);transition:transform .25s ease;}
.accordion-button:not(.collapsed) .faq-icon{transform:rotate(45deg);}
.accordion-body{padding:6px 20px 20px 60px;font-size:15px;line-height:1.8;color:var(--ink-600);}

/* ============ 表单 ============ */
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:30px;box-shadow:var(--shadow-card);}
.form-card h2{font-size:26px;margin-bottom:12px;}
.form-note{color:var(--ink-600);font-size:15px;margin-bottom:10px;}
.privacy-line{font-size:13px;color:var(--ink-600);background:var(--brand-50);border-radius:10px;padding:10px 14px;margin-bottom:22px;}
.form-label{font-size:14px;font-weight:600;color:var(--ink-900);margin-bottom:6px;}
.form-control,.form-select{
  height:46px;border-radius:var(--radius-btn);border:1px solid var(--line);
  font-size:15px;color:var(--ink-900);padding:0 14px;background-color:#fff;
  transition:border-color .2s ease,box-shadow .2s ease;
}
textarea.form-control{height:auto;padding:12px 14px;line-height:1.7;}
.form-control:focus,.form-select:focus{
  border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(35,82,158,.12);outline:none;
}
.form-control::placeholder{color:#9AA8BB;}
.form-select{
  appearance:none;-webkit-appearance:none;
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%235B6B80'%3E%3Cpath d='M4.6 6.2 8 9.6l3.4-3.4.9.9L8 11.4 3.7 7.1z'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;background-size:16px;padding-right:40px;
}
.check-line{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--ink-600);line-height:1.7;}
.check-line .form-check-input{width:18px;height:18px;margin-top:3px;flex:0 0 auto;border-radius:5px;border-color:#C7D2E2;}
.check-line .form-check-input:checked{background-color:var(--brand-600);border-color:var(--brand-600);}
.form-submit{width:100%;}
@media (min-width:768px){.form-submit{width:auto;min-width:200px;}}
.info-card{background:var(--brand-700);color:#fff;border-radius:var(--radius-card);padding:28px;height:100%;}
.info-card h3{color:#fff;font-size:19px;margin-bottom:14px;}
.info-card .info-sub{color:rgba(255,255,255,.82);font-size:14.5px;margin-bottom:20px;}
.info-list{display:flex;flex-direction:column;gap:16px;margin-bottom:22px;}
.info-list li{display:flex;gap:12px;align-items:flex-start;font-size:14.5px;color:rgba(255,255,255,.86);line-height:1.7;}
.info-list i{color:var(--accent-500);font-size:14px;margin-top:5px;flex:0 0 auto;}
.info-list strong{display:block;color:#fff;font-size:15px;font-weight:600;}
.info-foot{border-top:1px solid rgba(255,255,255,.16);padding-top:16px;font-size:13px;color:rgba(255,255,255,.7);}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-700);color:rgba(255,255,255,.8);padding:64px 0 26px;font-size:14px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark i{background:rgba(255,255,255,.85);}
.footer-brand .brand-mark i:nth-child(2){background:var(--accent-500);}
.footer-brand-text{font-size:19px;font-weight:700;color:#fff;}
.footer-desc{color:rgba(255,255,255,.76);font-size:14px;line-height:1.8;margin-bottom:20px;}
.qr-box{
  display:inline-flex;align-items:center;gap:12px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  border-radius:12px;padding:12px 16px;
}
.qr-box i{font-size:38px;color:#fff;}
.qr-box span{font-size:12.5px;line-height:1.6;color:rgba(255,255,255,.78);}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{color:rgba(255,255,255,.78);font-size:14px;transition:color .2s ease,transform .2s ease;}
.footer-links a:hover{color:#fff;transform:translateX(2px);}
.footer-contact{display:flex;flex-direction:column;gap:12px;}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;color:rgba(255,255,255,.78);font-size:14px;line-height:1.7;}
.footer-contact i{color:var(--accent-500);margin-top:6px;font-size:13px;flex:0 0 auto;}
.footer-contact a{color:rgba(255,255,255,.88);}
.footer-contact a:hover{color:#fff;}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.62);
}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:20px;bottom:24px;width:44px;height:44px;
  border-radius:10px;border:1px solid var(--line);background:var(--brand-50);color:var(--brand-600);
  display:grid;place-items:center;cursor:pointer;font-size:15px;
  opacity:0;pointer-events:none;transform:translateY(8px);
  transition:opacity .28s ease,transform .28s ease,background-color .2s ease;
  z-index:1040;
}
.to-top.is-show{opacity:1;pointer-events:auto;transform:translateY(0);}
.to-top:hover{background:#fff;border-color:var(--brand-500);}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .tier-grid{grid-template-columns:repeat(2,1fr);}
  .hero-stats strong{font-size:22px;}
}
@media (max-width:991.98px){
  .section{padding:56px 0;}
  .page-hero{padding:26px 0 48px;}
  .page-hero h1{font-size:30px;}
  h2{font-size:24px;}
  .hero-sub{font-size:16px;}
  .hero-media{margin-top:8px;}
  .flash-bar{padding:18px 20px;gap:16px;}
  .form-card{padding:24px;}
  .info-card{padding:24px;}
  .accordion-body{padding:6px 20px 20px 20px;}
}
@media (max-width:767.98px){
  body{font-size:15.5px;}
  .page-hero h1{font-size:28px;}
  .hero-cta .btn{width:100%;}
  .hero-stats{gap:10px;}
  .hero-stats > div{flex:1 1 100%;}
  .tier-grid{grid-template-columns:1fr;}
  .flash-timer span{min-width:40px;height:42px;font-size:17px;}
  .flash-bar .btn{width:100%;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:519.98px){
  .container{padding:0 16px;}
  .brand-text{font-size:17px;}
  .accordion-button{font-size:15px;padding:15px 16px;}
  .form-card h2{font-size:22px;}
}

/* roulang page: category2 */
:root{
  --brand-600:#23529E;
  --brand-700:#17386F;
  --brand-500:#3A6FC4;
  --brand-50:#EEF4FE;
  --accent-500:#FF8A2B;
  --accent-600:#E8761A;
  --accent-50:#FFF3E8;
  --teal-500:#16B8A8;
  --teal-50:#E6F8F6;
  --ink-900:#16202E;
  --ink-600:#5B6B80;
  --line:#E3E9F2;
  --surface:#FFFFFF;
  --bg:#F6F8FC;
  --radius-card:16px;
  --radius-img:14px;
  --radius-btn:10px;
  --shadow-card:0 2px 6px rgba(22,32,46,.04), 0 12px 28px rgba(35,82,158,.08);
  --shadow-hover:0 4px 10px rgba(22,32,46,.06), 0 18px 38px rgba(35,82,158,.14);
  --section-y:80px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-900);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease,transform .2s ease}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;letter-spacing:0}
h1{font-size:40px;line-height:1.25}
h2{font-size:28px;line-height:1.3}
h3{font-size:20px;line-height:1.4}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:3px solid rgba(35,82,158,.3);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1400px){.container{max-width:1280px}}
.section{padding:var(--section-y) 0}
.section-head{max-width:720px;margin-bottom:40px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head p{color:var(--ink-600);font-size:16px;margin:14px 0 0}
.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:5px 14px;margin-bottom:16px}
.eyebrow i{font-size:12px}
.num{font-variant-numeric:tabular-nums}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid rgba(35,82,158,.08);
  transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:0 8px 24px rgba(22,32,46,.08)}
.header-inner{display:flex;align-items:center;gap:18px;min-height:76px;transition:min-height .25s ease}
.site-header.scrolled .header-inner{min-height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{display:inline-grid;grid-template-columns:repeat(3,6px);gap:3px;align-items:end;height:20px}
.brand-mark i{display:block;width:6px;border-radius:2px;background:var(--brand-600)}
.brand-mark i:nth-child(1){height:8px;background:var(--accent-500)}
.brand-mark i:nth-child(2){height:14px}
.brand-mark i:nth-child(3){height:20px}
.brand-text{font-size:19px;font-weight:700;color:var(--brand-700);white-space:nowrap}
.nav-cards{display:flex;align-items:center;gap:8px;margin-left:auto;flex-wrap:nowrap}
.nav-card{
  display:flex;align-items:center;gap:8px;
  padding:8px 11px;border-radius:12px;
  background:var(--brand-50);border:1px solid transparent;
  transition:background-color .22s ease,border-color .22s ease,box-shadow .22s ease,transform .22s ease;
}
.nav-card:hover{background:#fff;border-color:var(--brand-500);box-shadow:0 6px 16px rgba(35,82,158,.12);transform:translateY(-1px)}
.nav-card.active{background:#fff;border-color:var(--brand-600);box-shadow:0 6px 16px rgba(35,82,158,.14)}
.nav-card-ico{width:28px;height:28px;border-radius:8px;background:#fff;color:var(--brand-600);display:grid;place-items:center;font-size:13px;flex:0 0 auto}
.nav-card.active .nav-card-ico{background:var(--brand-600);color:#fff}
.nav-card-txt{display:flex;flex-direction:column;line-height:1.25}
.nav-card-txt strong{font-size:14px;font-weight:600;color:var(--ink-900);white-space:nowrap}
.nav-card-txt em{font-style:normal;font-size:12px;color:var(--ink-600);white-space:nowrap}
.header-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.btn-cta{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--radius-btn);
  background:var(--accent-500);color:#fff;font-size:15px;font-weight:600;border:0;
  transition:background-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.btn-cta:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);box-shadow:0 10px 20px rgba(255,138,43,.32)}
.btn-cta:active{transform:translateY(0);box-shadow:none}
.btn-outline-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--radius-btn);
  background:#fff;border:1.5px solid var(--brand-600);color:var(--brand-600);
  font-size:15px;font-weight:600;
  transition:background-color .25s ease,color .25s ease,transform .25s ease;
}
.btn-outline-brand:hover{background:var(--brand-50);transform:translateY(-1px)}
.btn-outline-brand:active{transform:translateY(0)}
.btn-ghost{font-size:15px;font-weight:600;color:var(--brand-600);white-space:nowrap}
.btn-ghost:hover{color:var(--brand-500)}
.btn-link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand-600)}
.btn-link-arrow i{transition:transform .22s ease}
.btn-link-arrow:hover i{transform:translateX(3px)}
.nav-toggle{
  margin-left:auto;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:#fff;color:var(--brand-700);
  display:grid;place-items:center;font-size:17px;
}
.nav-toggle:hover{background:var(--brand-50)}
.mobile-nav{background:#fff;border-top:1px solid var(--line)}
.mobile-nav .container{padding-top:14px;padding-bottom:22px}
.mnav-card{display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:12px;background:var(--brand-50);margin-bottom:10px}
.mnav-card:hover{background:#fff;box-shadow:0 6px 16px rgba(35,82,158,.12)}
.mnav-card .nav-card-txt strong{font-size:15px}
.mnav-cta{display:flex;flex-direction:column;gap:10px;margin-top:14px}
.mnav-cta .btn-cta,.mnav-cta .btn-outline-brand{width:100%}

/* ---------- Hero ---------- */
.hero-cat{
  position:relative;overflow:hidden;
  padding:36px 0 72px;
  background-color:var(--brand-50);
  background-image:
    linear-gradient(180deg, rgba(255,255,255,.92), rgba(238,244,254,.35)),
    repeating-linear-gradient(0deg, rgba(35,82,158,.06) 0 1px, transparent 1px 36px),
    repeating-linear-gradient(90deg, rgba(35,82,158,.06) 0 1px, transparent 1px 36px);
}
.hero-cat::after{
  content:"";position:absolute;right:-130px;top:-90px;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle, rgba(255,138,43,.18), rgba(255,138,43,0) 66%);
  pointer-events:none;
}
.breadcrumb-bar{font-size:13px;color:var(--ink-600);margin-bottom:22px;position:relative;z-index:1}
.breadcrumb-bar a{color:var(--ink-600)}
.breadcrumb-bar a:hover{color:var(--brand-600)}
.breadcrumb-bar span.sep{margin:0 8px;color:#B7C2D2}
.breadcrumb-bar .current{color:var(--brand-600);font-weight:600}
.hero-inner{position:relative;z-index:1;max-width:880px;margin:0 auto;text-align:center}
.hero-inner h1{margin-bottom:18px}
.hero-sub{font-size:17px;color:var(--ink-600);max-width:720px;margin:0 auto}
.hero-badges{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin:26px 0 30px}
.badge-soft{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 15px;
  border-radius:999px;background:#fff;border:1px solid rgba(35,82,158,.16);
  font-size:13px;font-weight:600;color:var(--brand-700);
}
.badge-soft i{color:var(--teal-500);font-size:12px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.hero-note{margin-top:20px;font-size:14px;color:var(--ink-600)}

/* ---------- 通用卡片 / 列表 ---------- */
.card-lite{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.card-lite:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(35,82,158,.2)}
.check-list{display:flex;flex-direction:column;gap:12px;margin-top:20px}
.check-list li{display:flex;gap:10px;font-size:15px;color:var(--ink-600);line-height:1.7}
.check-list li i{color:var(--teal-500);margin-top:6px;font-size:13px}
.tag-line{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.tag{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;font-size:12px;font-weight:600;background:var(--brand-50);color:var(--brand-600)}
.tag-accent{background:var(--accent-50);color:var(--accent-600)}
.tag-teal{background:var(--teal-50);color:#0E8C80}

/* ---------- Zigzag ---------- */
.zig-row{margin-bottom:72px}
.zig-row:last-child{margin-bottom:0}
.zig-media{position:relative}
.zig-media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:var(--radius-img);background:var(--brand-50);
  box-shadow:var(--shadow-card);
}
.zig-media .float-badge{
  position:absolute;left:16px;bottom:16px;
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(23,56,111,.92);color:#fff;font-size:13px;font-weight:600;
  padding:8px 14px;border-radius:10px;
}
.zig-media .float-badge i{color:var(--accent-500)}
.zig-body h3{margin-bottom:14px}
.zig-body p{color:var(--ink-600);font-size:16px}
.zig-index{display:inline-block;font-size:13px;font-weight:700;color:var(--brand-600);background:var(--brand-50);border-radius:8px;padding:4px 10px;margin-bottom:14px;font-variant-numeric:tabular-nums}

/* ---------- 功能小卡网格 ---------- */
.feature-card{
  height:100%;background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:26px 22px;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(35,82,158,.24)}
.feature-ico{
  width:48px;height:48px;border-radius:12px;display:grid;place-items:center;
  background:var(--brand-50);color:var(--brand-600);font-size:19px;margin-bottom:18px;
}
.feature-card h3{font-size:18px;margin-bottom:8px}
.feature-card p{font-size:14px;color:var(--ink-600);margin:0;line-height:1.7}

/* ---------- 步骤条 ---------- */
.steps-wrap{position:relative}
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step-item{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:26px 22px;box-shadow:var(--shadow-card)}
.step-item::after{
  content:"";position:absolute;right:-24px;top:44px;width:24px;border-top:2px dashed rgba(35,82,158,.28);
}
.step-item:last-child::after{display:none}
.step-num{
  width:44px;height:44px;border-radius:10px;background:var(--brand-600);color:#fff;
  display:grid;place-items:center;font-weight:700;font-size:16px;font-variant-numeric:tabular-nums;
  margin-bottom:16px;
}
.step-item h3{font-size:18px;margin-bottom:8px}
.step-item p{font-size:14px;color:var(--ink-600);margin:0;line-height:1.7}

/* ---------- FAQ ---------- */
.faq-acc .accordion-item{border:1px solid var(--line);border-radius:12px;background:#fff;margin-bottom:12px;overflow:hidden}
.faq-acc .accordion-button{
  font-size:16px;font-weight:600;color:var(--ink-900);
  padding:18px 22px;background:#fff;box-shadow:none;gap:2px;
}
.faq-acc .accordion-button:not(.collapsed){background:var(--brand-50);color:var(--brand-700)}
.faq-acc .accordion-button:focus{box-shadow:none;outline:3px solid rgba(35,82,158,.18);outline-offset:-3px}
.faq-acc .accordion-button::after{
  background-image:none;content:"\f067";
  font-family:"Font Awesome 6 Free";font-weight:900;font-size:13px;color:var(--brand-600);
  display:grid;place-items:center;width:22px;height:22px;
  transition:transform .25s ease;
}
.faq-acc .accordion-button:not(.collapsed)::after{content:"\f068";transform:rotate(180deg);color:var(--brand-700)}
.faq-acc .accordion-body{
  padding:4px 22px 22px;font-size:15px;line-height:1.8;color:var(--ink-600);background:#FBFCFE;
}
.faq-idx{
  display:inline-grid;place-items:center;width:26px;height:26px;border-radius:8px;
  background:var(--brand-50);color:var(--brand-600);font-size:12px;font-weight:700;
  margin-right:12px;flex:0 0 auto;font-variant-numeric:tabular-nums;
}
.faq-acc .accordion-button:not(.collapsed) .faq-idx{background:var(--brand-600);color:#fff}

/* ---------- 表单 ---------- */
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:30px;box-shadow:var(--shadow-card)}
.form-label{display:block;font-size:14px;font-weight:600;color:var(--ink-900);margin-bottom:6px}
.form-control,.form-select{
  height:44px;border-radius:var(--radius-btn);border:1px solid var(--line);
  font-size:15px;padding:0 14px;background:#fff;color:var(--ink-900);box-shadow:none;
}
.form-control::placeholder{color:#9AA7B8}
textarea.form-control{height:auto;min-height:112px;padding:12px 14px;line-height:1.7;resize:vertical}
.form-control:focus,.form-select:focus{border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(35,82,158,.12)}
.form-select{background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%235B6B80'%3e%3cpath d='M8 11 3 6h10z'/%3e%3c/svg%3e");background-repeat:no-repeat;background-position:right 14px center;background-size:14px;appearance:none;padding-right:38px}
.form-check-input{width:18px;height:18px;border:1px solid var(--line);border-radius:5px;margin-top:2px}
.form-check-input:checked{background-color:var(--brand-600);border-color:var(--brand-600)}
.form-check-input:focus{border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(35,82,158,.14)}
.form-check-label{font-size:14px;color:var(--ink-600);line-height:1.7}
.form-hint{font-size:13px;color:var(--ink-600);margin:0 0 16px;padding-left:2px}
.info-card{background:var(--brand-700);color:rgba(255,255,255,.86);border-radius:var(--radius-card);padding:30px;height:100%}
.info-card h3{color:#fff;font-size:19px;margin-bottom:18px}
.info-card .check-list li{color:rgba(255,255,255,.8)}
.info-card .check-list li i{color:var(--accent-500)}
.info-meta{display:flex;flex-direction:column;gap:14px;margin-top:24px;padding-top:22px;border-top:1px solid rgba(255,255,255,.16)}
.info-meta div{display:flex;gap:10px;font-size:14px;line-height:1.7}
.info-meta i{color:var(--accent-500);margin-top:5px}

/* ---------- CTA 通栏 ---------- */
.cta-strip{
  display:flex;align-items:center;justify-content:space-between;gap:22px;flex-wrap:wrap;
  background:var(--accent-50);border:1px solid rgba(255,138,43,.3);
  border-radius:var(--radius-card);padding:26px 30px;
}
.cta-strip .cta-text strong{display:block;font-size:19px;color:var(--ink-900);margin-bottom:6px}
.cta-strip .cta-text span{font-size:14px;color:var(--ink-600)}
.cta-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-700);color:rgba(255,255,255,.8);padding:64px 0 0;margin-top:var(--section-y)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.footer-brand .brand-mark i:nth-child(1){background:var(--accent-500)}
.footer-brand .brand-mark i:nth-child(2),.footer-brand .brand-mark i:nth-child(3){background:rgba(255,255,255,.88)}
.footer-brand-text{font-size:19px;font-weight:700;color:#fff}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);margin:0 0 22px;max-width:340px}
.qr-box{
  display:inline-flex;align-items:center;gap:14px;padding:14px 18px;
  border:1px dashed rgba(255,255,255,.3);border-radius:12px;font-size:13px;line-height:1.5;
}
.qr-box i{font-size:42px;color:rgba(255,255,255,.85)}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:18px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-links a:hover{color:#fff;transform:translateX(2px)}
.footer-contact{display:flex;flex-direction:column;gap:12px}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:rgba(255,255,255,.75);line-height:1.7}
.footer-contact li i{color:var(--accent-500);margin-top:5px}
.footer-contact a{color:rgba(255,255,255,.92)}
.footer-contact a:hover{color:#fff;text-decoration:underline}
.footer-bottom{
  margin-top:48px;padding:20px 0;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.6);
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:20px;bottom:24px;width:44px;height:44px;
  border-radius:10px;border:1px solid rgba(35,82,158,.18);
  background:var(--brand-50);color:var(--brand-600);
  display:grid;place-items:center;z-index:1040;cursor:pointer;
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease,background-color .2s ease;
}
.to-top.show{opacity:1;visibility:visible}
.to-top:hover{background:var(--brand-600);color:#fff}

/* ---------- 响应式 ---------- */
@media (max-width:1399.98px){
  .nav-card-txt em{display:none}
  .nav-card{padding:8px 10px}
}
@media (max-width:1199.98px){
  .header-actions .btn-ghost{display:none}
}
@media (max-width:991.98px){
  :root{--section-y:56px}
  h1{font-size:30px}
  h2{font-size:24px}
  .hero-cat{padding:26px 0 56px}
  .hero-sub{font-size:16px}
  .zig-row{margin-bottom:52px}
  .zig-media img{aspect-ratio:16/10}
  .zig-body{margin-top:22px}
  .steps-grid{grid-template-columns:1fr;gap:16px}
  .step-item::after{display:none}
  .cta-strip{padding:22px 20px}
}
@media (max-width:575.98px){
  .container{padding:0 16px}
  h1{font-size:26px}
  h2{font-size:22px}
  .hero-actions{flex-direction:column}
  .hero-actions .btn-cta,.hero-actions .btn-outline-brand{width:100%}
  .form-card,.info-card{padding:22px 18px}
  .feature-card{padding:22px 18px}
  .cta-actions{width:100%}
  .cta-actions .btn-cta,.cta-actions .btn-outline-brand{width:100%}
  .footer-bottom{flex-direction:column;gap:6px}
}

/* roulang page: category3 */
:root{
  --brand-600:#23529E;
  --brand-700:#17386F;
  --brand-500:#3A6FC4;
  --brand-50:#EEF4FE;
  --accent-500:#FF8A2B;
  --accent-600:#E6761A;
  --accent-50:#FFF3E8;
  --teal-500:#16B8A8;
  --teal-50:#E6F8F6;
  --ink-900:#16202E;
  --ink-700:#2A3646;
  --ink-600:#5B6B80;
  --line:#E3E9F2;
  --surface:#FFFFFF;
  --bg:#F6F8FC;
  --radius-xl:18px;
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:10px;
  --shadow-card:0 2px 6px rgba(22,32,46,.04), 0 12px 28px rgba(35,82,158,.08);
  --shadow-hover:0 6px 14px rgba(22,32,46,.06), 0 18px 40px rgba(35,82,158,.14);
  --font-stack:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-stack);
  font-size:16px;
  line-height:1.8;
  color:var(--ink-900);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-500)}
button{font-family:inherit}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;letter-spacing:0}
p{margin:0}
.num,.fact-num,.step-num,.price{font-variant-numeric:tabular-nums}
:focus-visible{outline:3px solid rgba(35,82,158,.28);outline-offset:2px;border-radius:6px}

.container{max-width:1200px;padding-left:20px;padding-right:20px}
@media (min-width:1400px){.container{max-width:1280px}}

.section{padding:72px 0}
.section-tight{padding:56px 0}
.section-head{margin-bottom:36px}
.section-title{font-size:28px;line-height:1.3;margin-bottom:10px}
.section-sub{font-size:15px;color:var(--ink-600);max-width:760px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--brand-600);background:var(--brand-50);
  border-radius:999px;padding:5px 14px;margin-bottom:16px;font-weight:600;
}

/* 按钮 */
.btn-accent,.btn-outline-brand,.btn-plain{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;border-radius:var(--radius-sm);padding:0 24px;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:background .25s ease,color .25s ease,transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  border:1.5px solid transparent;white-space:nowrap;
}
.btn-accent{background:var(--accent-500);border-color:var(--accent-500);color:#fff}
.btn-accent:hover{background:var(--accent-600);border-color:var(--accent-600);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(255,138,43,.28)}
.btn-accent:active{transform:translateY(0);box-shadow:none}
.btn-outline-brand{background:#fff;border-color:var(--brand-600);color:var(--brand-600)}
.btn-outline-brand:hover{background:var(--brand-50);color:var(--brand-700);border-color:var(--brand-700);transform:translateY(-1px)}
.btn-outline-brand:active{transform:translateY(0)}
.btn-plain{background:#fff;border-color:var(--line);color:var(--ink-700);font-weight:500}
.btn-plain:hover{border-color:var(--brand-600);color:var(--brand-600)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand-600)}
.link-arrow i{transition:transform .2s ease}
.link-arrow:hover i{transform:translateX(3px)}
.link-quiet{font-size:14px;color:var(--ink-600);font-weight:500;padding:6px 4px}
.link-quiet:hover{color:var(--brand-600)}

/* 标签与徽章 */
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;background:var(--brand-50);color:var(--brand-600);
}
.tag-accent{background:var(--accent-50);color:#C4610C}
.tag-teal{background:var(--teal-50);color:#0E8A7D}

/* 顶部公告条 */
.topbar{background:var(--brand-50);border-bottom:1px solid rgba(35,82,158,.09);position:relative;z-index:1041}
.topbar-inner{display:flex;align-items:center;gap:10px;min-height:40px}
.topbar-ico{color:var(--accent-500);font-size:14px}
.topbar p{margin:0;font-size:14px;color:var(--brand-700);line-height:1.5}
.topbar-close{
  margin-left:auto;background:none;border:0;width:32px;height:32px;border-radius:8px;
  color:var(--ink-600);font-size:20px;line-height:1;cursor:pointer;transition:background .2s ease,color .2s ease;
}
.topbar-close:hover{background:rgba(35,82,158,.1);color:var(--brand-700)}

/* 头部与导航 */
.site-header{position:sticky;top:0;z-index:1040;padding:10px 0;background:var(--bg);transition:padding .25s ease}
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:rgba(35,82,158,.08)}
.header-inner{
  display:flex;align-items:center;gap:18px;
  background:#fff;border:1px solid rgba(35,82,158,.1);border-radius:var(--radius-lg);
  padding:10px 16px;box-shadow:0 2px 6px rgba(22,32,46,.04);
  transition:padding .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled .header-inner{padding:6px 16px;box-shadow:var(--shadow-card)}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{display:inline-flex;align-items:flex-end;gap:3px;height:24px}
.brand-mark i{display:block;width:5px;border-radius:2px;background:var(--brand-600)}
.brand-mark i:nth-child(1){height:12px}
.brand-mark i:nth-child(2){height:22px;background:var(--accent-500)}
.brand-mark i:nth-child(3){height:16px}
.brand-text{display:flex;flex-direction:column;font-size:17px;font-weight:700;color:var(--ink-900);line-height:1.2}
.brand-text em{font-style:normal;font-size:12px;font-weight:400;color:var(--ink-600);margin-top:2px}
@media (max-width:1199px){.brand-text em{display:none}}

.nav-cards{display:flex;align-items:center;gap:8px;margin:0 auto;flex-shrink:0}
.nav-card{
  display:flex;align-items:center;gap:8px;padding:6px 10px;border-radius:var(--radius-md);
  background:#F7F9FD;border:1px solid transparent;transition:background .2s ease,border-color .2s ease,transform .2s ease;
}
.nav-card:hover{background:var(--brand-50);border-color:rgba(35,82,158,.38);transform:translateY(-1px)}
.nav-card.active{background:var(--brand-50);border-color:var(--brand-600)}
.nav-card-ico{
  width:28px;height:28px;border-radius:8px;background:#fff;display:grid;place-items:center;
  color:var(--brand-600);font-size:13px;flex-shrink:0;border:1px solid rgba(35,82,158,.1);
}
.nav-card.active .nav-card-ico{background:var(--brand-600);color:#fff;border-color:var(--brand-600)}
.nav-card-txt{display:flex;flex-direction:column;line-height:1.25}
.nav-card-txt strong{font-size:14px;font-weight:600;color:var(--ink-900)}
.nav-card-txt em{font-style:normal;font-size:12px;color:var(--ink-600);white-space:nowrap}
@media (max-width:1399px){.nav-card-txt em{display:none}}

.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.nav-toggle{
  width:44px;height:44px;border-radius:var(--radius-sm);border:1.5px solid var(--line);
  background:#fff;color:var(--brand-600);font-size:17px;cursor:pointer;transition:border-color .2s ease,background .2s ease;
}
.nav-toggle:hover{border-color:var(--brand-600);background:var(--brand-50)}

.nav-drawer{--bs-offcanvas-width:330px;background:#fff}
.nav-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:16px 20px}
.nav-drawer .offcanvas-body{padding:16px 20px}
.drawer-close{width:44px;height:44px;border-radius:var(--radius-sm);border:1px solid var(--line);background:#fff;color:var(--ink-600);font-size:18px;cursor:pointer}
.drawer-close:hover{color:var(--brand-600);border-color:var(--brand-600)}
.drawer-list{display:flex;flex-direction:column;gap:10px}
.drawer-item{
  display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:var(--radius-md);
  background:#F7F9FD;border:1px solid transparent;color:var(--ink-900);font-size:15px;
}
.drawer-item i{width:34px;height:34px;border-radius:9px;background:#fff;display:grid;place-items:center;color:var(--brand-600);border:1px solid rgba(35,82,158,.1)}
.drawer-item span em{display:block;font-style:normal;font-size:12px;color:var(--ink-600)}
.drawer-item.active{background:var(--brand-50);border-color:var(--brand-600)}
.drawer-item.active i{background:var(--brand-600);color:#fff;border-color:var(--brand-600)}
.drawer-footer{padding:16px 20px;border-top:1px solid var(--line)}

/* Hero */
.hero-guide{position:relative;background:var(--brand-50);padding:64px 0 64px;overflow:hidden}
.hero-guide::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(35,82,158,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(35,82,158,.055) 1px,transparent 1px);
  background-size:48px 48px;
}
.hero-guide .container{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center}
.hero-title{font-size:40px;line-height:1.25;margin-bottom:16px}
.hero-sub{font-size:16px;color:var(--ink-700);max-width:620px;margin-bottom:24px}
.hero-search{
  display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);
  border-radius:14px;padding:7px 7px 7px 16px;max-width:620px;box-shadow:var(--shadow-card);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.hero-search:focus-within{border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(35,82,158,.12)}
.hero-search>i{color:var(--brand-600);font-size:15px}
.hero-search input{
  flex:1;border:0;outline:none;background:transparent;height:44px;font-size:15px;color:var(--ink-900);min-width:0;
}
.hero-search input::placeholder{color:#94A3B8}
.hero-chips{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:18px}
.hero-chips .chip-label{font-size:13px;color:var(--ink-600)}
.chip{
  display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 14px;border-radius:999px;
  background:#fff;border:1px solid var(--line);color:var(--ink-600);font-size:13px;
  transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.chip:hover{border-color:var(--brand-600);color:var(--brand-600);background:var(--brand-50)}
.hero-visual{position:relative;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-card);background:#E8EEF7;aspect-ratio:16/11}
.hero-visual img{width:100%;height:100%;object-fit:cover}
.hero-badge{
  position:absolute;left:14px;top:14px;display:inline-flex;align-items:center;gap:6px;
  background:rgba(255,255,255,.94);color:#0E8A7D;font-size:12px;font-weight:600;
  border-radius:999px;padding:6px 12px;border:1px solid rgba(22,184,168,.35);
}

/* 面包屑 */
.crumb-bar{background:#fff;border-bottom:1px solid var(--line);padding:12px 0}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;font-size:13px;color:var(--ink-600)}
.crumb li{display:flex;align-items:center;gap:8px}
.crumb li+li::before{content:"/";color:#B8C3D2}
.crumb a{color:var(--ink-600)}
.crumb a:hover{color:var(--brand-600)}
.crumb li[aria-current]{color:var(--brand-600);font-weight:600}

/* 数据条 */
.facts-section{padding:32px 0 8px}
.facts-strip{
  display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);box-shadow:var(--shadow-card);overflow:hidden;
}
.fact{padding:22px 24px;border-right:1px solid var(--line);display:flex;flex-direction:column;gap:4px}
.fact:last-child{border-right:0}
.fact-num{font-size:24px;font-weight:700;color:var(--brand-600);line-height:1.2;display:flex;align-items:baseline;gap:4px}
.fact-num span{font-size:13px;font-weight:500;color:var(--ink-600)}
.fact-label{font-size:13px;color:var(--ink-600)}

/* 指南主体 */
.guide-wrap{display:grid;grid-template-columns:3fr 9fr;gap:24px;align-items:start}
.toc-card{
  position:sticky;top:104px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);box-shadow:var(--shadow-card);padding:20px;
}
.toc-title{font-size:15px;font-weight:700;color:var(--ink-900);margin-bottom:12px;display:flex;align-items:center;gap:8px}
.toc-title i{color:var(--brand-600)}
.toc-list{display:flex;flex-direction:column;gap:4px}
.toc-list a{
  display:block;padding:9px 10px;border-radius:var(--radius-sm);font-size:14px;color:var(--ink-600);
  border-left:3px solid transparent;transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.toc-list a:hover{background:var(--brand-50);color:var(--brand-700)}
.toc-list a.active{background:var(--brand-50);color:var(--brand-700);border-left-color:var(--brand-600);font-weight:600}
.toc-help{margin-top:16px;padding-top:16px;border-top:1px dashed var(--line);font-size:13px;color:var(--ink-600)}
.toc-help a{font-weight:600}

.guide-content{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);padding:36px;
}
.guide-block+.guide-block{margin-top:52px}
.guide-block h2{
  font-size:26px;line-height:1.3;padding-left:14px;border-left:4px solid var(--brand-600);margin-bottom:16px;
}
.guide-block h3{font-size:19px;line-height:1.4;color:var(--brand-700);margin:26px 0 8px}
.guide-block p{color:var(--ink-700);font-size:16px;line-height:1.85;margin-bottom:14px}
.guide-block p:last-child{margin-bottom:0}
.check-list{list-style:none;display:flex;flex-direction:column;gap:10px;margin:6px 0 14px}
.check-list li{display:flex;gap:10px;font-size:15px;color:var(--ink-700);line-height:1.8}
.check-list li i{color:var(--brand-600);margin-top:7px;font-size:13px}
.num-list{list-style:none;counter-reset:step;display:flex;flex-direction:column;gap:12px;margin:6px 0 14px}
.num-list li{counter-increment:step;display:flex;gap:12px;font-size:15px;color:var(--ink-700);line-height:1.8}
.num-list li::before{
  content:counter(step);flex-shrink:0;width:24px;height:24px;border-radius:7px;margin-top:6px;
  background:var(--brand-50);color:var(--brand-600);font-size:13px;font-weight:700;
  display:grid;place-items:center;font-variant-numeric:tabular-nums;
}
.tip-box{
  display:flex;gap:12px;background:var(--brand-50);border-left:4px solid var(--brand-600);
  border-radius:0 var(--radius-md) var(--radius-md) 0;padding:16px 18px;margin-top:18px;
}
.tip-box i{color:var(--brand-600);margin-top:5px}
.tip-box p{margin:0;font-size:15px;color:var(--brand-700);line-height:1.8}
.tip-box.orange{background:var(--accent-50);border-left-color:var(--accent-500)}
.tip-box.orange i,.tip-box.orange p{color:#9A4E06}

/* 步骤条 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:24px;box-shadow:var(--shadow-card);transition:transform .25s ease,box-shadow .25s ease;
}
.step:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.step-num{
  width:44px;height:44px;border-radius:var(--radius-md);background:var(--brand-600);color:#fff;
  display:grid;place-items:center;font-size:18px;font-weight:700;margin-bottom:14px;
}
.step h3{font-size:18px;margin-bottom:8px}
.step p{font-size:15px;color:var(--ink-600);line-height:1.75}
.step:not(:last-child)::after{
  content:"";position:absolute;top:46px;right:-24px;width:24px;border-top:2px dashed rgba(35,82,158,.35);
}

/* 卡片列表 */
.guide-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.g-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .25s ease,box-shadow .25s ease;
}
.g-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.g-card-img{aspect-ratio:4/3;overflow:hidden;background:#E8EEF7}
.g-card-img img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.g-card:hover .g-card-img img{transform:scale(1.04)}
.g-card-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.g-card-body h3{font-size:18px;line-height:1.4}
.g-card-body p{font-size:15px;color:var(--ink-600);line-height:1.75}
.g-card-body .link-arrow{margin-top:auto}

/* CTA 通栏 */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  background:var(--accent-50);border:1px solid rgba(255,138,43,.28);
  border-radius:var(--radius-lg);padding:32px 36px;
}
.cta-band-title{font-size:22px;line-height:1.35;margin-bottom:8px}
.cta-band-text{font-size:15px;color:var(--ink-700);max-width:620px}
.cta-band-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}

/* 页脚 */
.site-footer{background:var(--brand-700);color:rgba(255,255,255,.8);padding:56px 0 0;margin-top:72px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.site-footer .brand-mark i{background:rgba(255,255,255,.9)}
.site-footer .brand-mark i:nth-child(2){background:var(--accent-500)}
.footer-brand-text{font-size:18px;font-weight:700;color:#fff}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.72)}
.qr-box{
  display:flex;align-items:center;gap:12px;margin-top:18px;padding:12px 16px;
  background:rgba(255,255,255,.08);border-radius:var(--radius-md);font-size:13px;color:rgba(255,255,255,.78);
}
.qr-box i{font-size:34px;color:#fff}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:rgba(255,255,255,.78);font-size:14px;display:inline-block;transition:color .2s ease,transform .2s ease}
.footer-links a:hover{color:#fff;transform:translateX(2px)}
.footer-contact{list-style:none;display:flex;flex-direction:column;gap:12px}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:rgba(255,255,255,.78);line-height:1.7}
.footer-contact li i{margin-top:5px;color:rgba(255,255,255,.6)}
.footer-contact a{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  margin-top:40px;padding:20px 0;border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.62);
}

/* 返回顶部 */
.back-top{
  position:fixed;right:20px;bottom:24px;width:44px;height:44px;border-radius:var(--radius-md);
  background:var(--brand-50);border:1px solid rgba(35,82,158,.2);color:var(--brand-600);
  font-size:16px;cursor:pointer;z-index:1039;opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease,background .2s ease,transform .2s ease;
}
.back-top.show{opacity:1;visibility:visible}
.back-top:hover{background:#fff;transform:translateY(-2px);box-shadow:var(--shadow-card)}

@media (max-width:1199px){
  .hero-title{font-size:34px}
  .guide-content{padding:28px}
}

@media (max-width:991px){
  .section{padding:52px 0}
  .hero-guide{padding:48px 0}
  .hero-grid{grid-template-columns:1fr;gap:28px}
  .hero-visual{order:-1;aspect-ratio:16/9}
  .hero-title{font-size:30px}
  .guide-wrap{grid-template-columns:1fr}
  .toc-card{position:static}
  .toc-list{flex-direction:row;flex-wrap:wrap;gap:8px}
  .toc-list a{border-left:0;border:1px solid var(--line);border-radius:999px;padding:7px 14px;font-size:13px}
  .toc-list a.active{border-color:var(--brand-600)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step:not(:last-child)::after{display:none}
  .guide-cards{grid-template-columns:repeat(2,1fr)}
  .facts-strip{grid-template-columns:repeat(2,1fr)}
  .fact:nth-child(2){border-right:0}
  .fact:nth-child(1),.fact:nth-child(2){border-bottom:1px solid var(--line)}
  .cta-band{padding:26px 24px}
}

@media (max-width:767px){
  .section{padding:48px 0}
  .hero-title{font-size:28px}
  .hero-search{padding:6px 6px 6px 14px}
  .hero-search .btn-accent{padding:0 16px;height:44px;font-size:14px}
  .guide-content{padding:22px}
  .guide-block h2{font-size:22px}
  .guide-cards{grid-template-columns:1fr}
  .cta-band{flex-direction:column;align-items:flex-start}
  .cta-band-actions{width:100%}
  .cta-band-actions .btn-accent,.cta-band-actions .btn-outline-brand{flex:1;justify-content:center}
  .footer-bottom{flex-direction:column;gap:8px}
}

@media (max-width:575px){
  .facts-strip{grid-template-columns:1fr}
  .fact{border-right:0;border-bottom:1px solid var(--line)}
  .fact:last-child{border-bottom:0}
  .steps{grid-template-columns:1fr}
  .guide-block h2{font-size:20px}
  .section-title{font-size:23px}
  .topbar p{font-size:13px}
}

/* roulang page: category4 */
:root{
  --brand-600:#23529E;
  --brand-700:#17386F;
  --brand-500:#3A6FC4;
  --brand-50:#EEF4FE;
  --accent-500:#FF8A2B;
  --accent-600:#E5761A;
  --accent-50:#FFF3E8;
  --teal-500:#16B8A8;
  --teal-50:#E6F8F6;
  --ink-900:#16202E;
  --ink-600:#5B6B80;
  --ink-400:#8B99AC;
  --line:#E3E9F2;
  --surface:#FFFFFF;
  --bg:#F6F8FC;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-card:0 2px 6px rgba(22,32,46,.04),0 12px 28px rgba(35,82,158,.08);
  --shadow-hover:0 6px 14px rgba(22,32,46,.06),0 18px 40px rgba(35,82,158,.14);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  color:var(--ink-900);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand-600);text-decoration:none}
a:hover{color:var(--brand-500)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink-900);letter-spacing:0}
h1{font-size:40px;line-height:1.25;font-weight:700}
h2{font-size:28px;line-height:1.3;font-weight:700}
h3{font-size:20px;line-height:1.4;font-weight:600}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
.num{font-variant-numeric:tabular-nums}
:focus-visible{outline:3px solid rgba(35,82,158,.35);outline-offset:2px;border-radius:6px}

.container,.container-lg,.container-xl{
  max-width:1200px;
  padding-left:20px;
  padding-right:20px;
  margin-left:auto;
  margin-right:auto;
}
@media (min-width:1400px){
  .container{max-width:1280px}
}

/* ---------- 通用按钮 ---------- */
.btn-main,.btn-ghost,.btn-soft{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:0;cursor:pointer;
  transition:transform .25s ease,background-color .25s ease,box-shadow .25s ease,color .25s ease;
  white-space:nowrap;
}
.btn-main{background:var(--accent-500);color:#fff;box-shadow:0 6px 16px rgba(255,138,43,.24)}
.btn-main:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);box-shadow:0 12px 24px rgba(255,138,43,.32)}
.btn-main:active{transform:translateY(0);box-shadow:0 4px 10px rgba(255,138,43,.24)}
.btn-ghost{background:#fff;color:var(--brand-600);border:1.5px solid var(--brand-600)}
.btn-ghost:hover{background:var(--brand-50);color:var(--brand-700);transform:translateY(-1px)}
.btn-soft{background:var(--brand-50);color:var(--brand-700)}
.btn-soft:hover{background:#E2EBFB;color:var(--brand-700)}
.btn-main[disabled],.btn-ghost[disabled]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--brand-600);font-size:15px}
.link-arrow i{transition:transform .25s ease}
.link-arrow:hover i{transform:translateX(3px)}

/* ---------- 徽章 / 标签 ---------- */
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;
  border-radius:999px;background:var(--brand-50);color:var(--brand-700);
  font-size:12px;font-weight:600;line-height:1;
}
.badge-accent{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;background:var(--accent-500);color:#fff;font-size:12px;font-weight:600;line-height:1}
.badge-teal{display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;border-radius:999px;background:var(--teal-50);color:#0E7A70;font-size:12px;font-weight:600;line-height:1}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--bg);
  padding:12px 0;
  border-bottom:1px solid transparent;
  transition:padding .25s ease,border-color .25s ease;
}
.site-header.scrolled{padding:7px 0;border-bottom-color:rgba(35,82,158,.08)}
.header-inner{
  display:flex;align-items:center;gap:14px;
  background:var(--surface);
  border:1px solid rgba(35,82,158,.08);
  border-radius:var(--radius-card);
  padding:10px 14px;
  min-height:76px;
  box-shadow:var(--shadow-card);
  transition:min-height .25s ease,box-shadow .25s ease;
}
.site-header.scrolled .header-inner{min-height:64px;box-shadow:0 4px 10px rgba(22,32,46,.05),0 16px 32px rgba(35,82,158,.12)}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{display:inline-flex;align-items:flex-end;gap:3px;height:20px;color:var(--brand-600)}
.brand-mark i{display:block;width:5px;border-radius:2px;background:currentColor}
.brand-mark i:nth-child(1){height:11px;background:var(--brand-500)}
.brand-mark i:nth-child(2){height:20px}
.brand-mark i:nth-child(3){height:15px;background:var(--accent-500)}
.brand-text{font-size:18px;font-weight:700;color:var(--ink-900);line-height:1.2}
.nav-cards{display:flex;align-items:center;gap:6px;flex:1;min-width:0}
.nav-card{
  display:flex;align-items:center;gap:8px;
  padding:7px 9px;border-radius:12px;
  background:var(--bg);border:1px solid transparent;
  transition:background-color .25s ease,border-color .25s ease,transform .25s ease;
  min-width:0;
}
.nav-card:hover{background:var(--brand-50);border-color:rgba(35,82,158,.28);color:var(--brand-700)}
.nav-card.active{background:var(--brand-50);border-color:var(--brand-600)}
.nav-card-ico{
  width:30px;height:30px;flex-shrink:0;border-radius:9px;
  background:#fff;border:1px solid var(--line);color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;font-size:13px;
}
.nav-card.active .nav-card-ico{background:var(--brand-600);color:#fff;border-color:var(--brand-600)}
.nav-card-txt{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.nav-card-txt strong{font-size:13.5px;font-weight:600;color:var(--ink-900);white-space:nowrap}
.nav-card-txt em{font-size:12px;font-style:normal;color:var(--ink-400);white-space:nowrap}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.header-actions .btn-main,.header-actions .btn-ghost{height:44px;padding:0 18px;font-size:14px}
.nav-toggle{
  width:44px;height:44px;border-radius:12px;background:var(--brand-50);
  color:var(--brand-700);border:1px solid rgba(35,82,158,.16);
  display:flex;align-items:center;justify-content:center;font-size:17px;cursor:pointer;
}
.nav-toggle:hover{background:#E2EBFB}
.mobile-nav{
  display:none;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:12px;margin-top:10px;box-shadow:var(--shadow-card);
}
.mobile-nav.open{display:block}
.mobile-nav-card{
  display:flex;align-items:center;gap:12px;padding:12px;border-radius:12px;
  background:var(--bg);border:1px solid transparent;margin-bottom:8px;color:var(--ink-900);
}
.mobile-nav-card:hover{background:var(--brand-50);color:var(--brand-700)}
.mobile-nav-card.active{background:var(--brand-50);border-color:var(--brand-600)}
.mobile-nav-card .nav-card-txt strong{font-size:15px}
.mobile-nav-cta{display:flex;gap:10px;padding-top:4px}
.mobile-nav-cta .btn-main,.mobile-nav-cta .btn-ghost{flex:1}
@media (max-width:1199px){
  .nav-card-txt em{display:none}
}
@media (max-width:991px){
  .nav-cards,.header-actions{display:none}
}

/* ---------- 面包屑 ---------- */
.breadcrumb-bar{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-400);margin-bottom:18px}
.breadcrumb-bar a{color:var(--ink-600)}
.breadcrumb-bar a:hover{color:var(--brand-600)}
.breadcrumb-bar .current{color:var(--brand-600);font-weight:600}

/* ---------- Hero ---------- */
.hero-qa{
  position:relative;overflow:hidden;
  padding:44px 0 64px;
  background:var(--brand-50);
}
.hero-qa::before{
  content:"";position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;
  opacity:.14;
}
.hero-qa::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(238,244,254,.72) 0%,rgba(246,248,252,.94) 100%);
}
.hero-qa-inner{position:relative;z-index:1;max-width:880px;margin:0 auto;text-align:center}
.hero-qa h1{margin-bottom:16px}
.hero-lead{font-size:17px;color:var(--ink-600);max-width:680px;margin:0 auto 28px}
.hero-search{
  display:flex;align-items:center;gap:10px;
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:10px 10px 10px 18px;box-shadow:var(--shadow-card);
  max-width:640px;margin:0 auto;
}
.hero-search > i{color:var(--brand-600);font-size:16px}
.hero-search input{
  flex:1;min-width:0;border:0;outline:none;height:44px;font-size:15px;background:transparent;
}
.hero-search input::placeholder{color:var(--ink-400)}
.hero-search .btn-main{height:44px;padding:0 20px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:22px}
.hero-tags span{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
  background:#fff;border:1px solid var(--line);color:var(--ink-600);font-size:13px;
}

/* ---------- 板块基础 ---------- */
.sec{padding:80px 0}
.sec-alt{background:var(--surface)}
.sec-head{max-width:720px;margin:0 auto 40px;text-align:center}
.sec-head p{color:var(--ink-600);font-size:16px;margin-top:12px}
.sec-head-left{max-width:760px;margin-bottom:36px}
.sec-head-left p{color:var(--ink-600);margin-top:12px}

/* ---------- 筛选行 ---------- */
.filter-row{
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;
  padding:14px;background:#fff;border:1px solid var(--line);border-radius:14px;
  box-shadow:var(--shadow-card);margin-bottom:28px;
}
.filter-row .filter-label{font-size:13px;color:var(--ink-400);margin-right:4px}
.chip{
  display:inline-flex;align-items:center;gap:6px;height:36px;padding:0 14px;
  border-radius:999px;background:var(--bg);border:1px solid var(--line);
  color:var(--ink-600);font-size:14px;transition:all .25s 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;font-weight:600}
.chip.active:hover{background:var(--brand-700);color:#fff}

/* ---------- 问答双栏网格 ---------- */
.qa-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.qa-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-card);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  display:flex;flex-direction:column;gap:12px;
}
.qa-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(35,82,158,.2)}
.qa-card-top{display:flex;align-items:flex-start;gap:14px}
.qa-ico{
  width:42px;height:42px;flex-shrink:0;border-radius:12px;
  background:var(--brand-50);color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;font-size:17px;
}
.qa-card h3{font-size:18px;line-height:1.45}
.qa-card p{color:var(--ink-600);font-size:15px;line-height:1.8;margin:0}
.qa-card-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding-top:4px}
.qa-meta{font-size:13px;color:var(--ink-400)}

/* ---------- 支持渠道卡 ---------- */
.channel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.channel-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .25s ease,box-shadow .25s ease;
  display:flex;flex-direction:column;
}
.channel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.channel-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:#DFE7F4}
.channel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.channel-card:hover .channel-thumb img{transform:scale(1.04)}
.channel-body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1}
.channel-body h3{font-size:18px}
.channel-body p{color:var(--ink-600);font-size:15px;margin:0}
.channel-meta{display:flex;align-items:center;gap:10px;margin-top:auto;padding-top:8px;font-size:13px;color:var(--ink-400)}

/* ---------- FAQ 手风琴 ---------- */
.faq-wrap{max-width:900px;margin:0 auto}
.faq-accordion .accordion-item{
  border:1px solid var(--line);border-radius:12px!important;
  margin-bottom:12px;overflow:hidden;background:var(--surface);
}
.faq-accordion .accordion-button{
  font-size:16px;font-weight:600;color:var(--ink-900);
  background:var(--surface);padding:16px 20px;min-height:56px;
  display:flex;align-items:center;gap:14px;box-shadow:none!important;
}
.faq-accordion .accordion-button:not(.collapsed){background:var(--brand-50);color:var(--brand-700)}
.faq-accordion .accordion-button::before{
  counter-increment:faqitem;content:counter(faqitem);
  flex-shrink:0;width:26px;height:26px;border-radius:6px;
  background:var(--brand-600);color:#fff;font-size:13px;font-weight:600;
  display:flex;align-items:center;justify-content:center;
}
.faq-accordion .accordion-button::after{
  content:"";width:12px;height:12px;background-image:none;
  border-right:2px solid var(--brand-600);border-bottom:2px solid var(--brand-600);
  transform:rotate(45deg);margin-left:auto;flex-shrink:0;transition:transform .25s ease;
}
.faq-accordion .accordion-button:not(.collapsed)::after{transform:rotate(-135deg)}
.faq-accordion .accordion-body{
  background:#FAFBFE;color:var(--ink-600);font-size:15px;line-height:1.8;
  padding:18px 22px 22px 60px;
}
.faq-accordion{counter-reset:faqitem}

/* ---------- 联系表单 ---------- */
.contact-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:start}
.form-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:32px;box-shadow:var(--shadow-card);
}
.form-card h2{font-size:24px;margin-bottom:10px}
.form-hint{
  background:var(--brand-50);border-left:3px solid var(--brand-600);
  border-radius:0 10px 10px 0;padding:12px 16px;font-size:14px;color:var(--ink-600);margin-bottom:22px;
}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1 / -1}
.field label{font-size:14px;font-weight:600;color:var(--ink-900)}
.field input,.field select,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:#fff;padding:0 14px;height:44px;font-size:15px;color:var(--ink-900);
  transition:border-color .2s ease,box-shadow .2s ease;outline:none;
}
.field textarea{height:auto;min-height:118px;padding:12px 14px;resize:vertical;line-height:1.7}
.field select{
  appearance:none;
  background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath fill='%235B6B80' d='M6 8 0 0h12z'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;background-size:10px;
  padding-right:38px;
}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(35,82,158,.12);
}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-400)}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--ink-600);grid-column:1 / -1}
.check-row input{width:18px;height:18px;margin-top:4px;flex-shrink:0;accent-color:var(--brand-600)}
.form-submit{grid-column:1 / -1;display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:4px}
.form-tip{font-size:14px;color:#0E7A70;display:none}
.form-tip.show{display:block}
.info-card{
  background:var(--brand-700);color:rgba(255,255,255,.86);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);
}
.info-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.info-body{padding:26px}
.info-body h3{color:#fff;font-size:19px;margin-bottom:14px}
.info-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:14px}
.info-list li{display:flex;gap:12px;align-items:flex-start;font-size:14.5px;line-height:1.7}
.info-list li i{color:var(--accent-500);margin-top:5px;flex-shrink:0}
.info-body .badge-teal{background:rgba(22,184,168,.18);color:#7DE7DA;margin-bottom:14px}

/* ---------- 通栏 CTA ---------- */
.cta-strip{
  background:var(--accent-50);border:1px solid rgba(255,138,43,.28);
  border-radius:var(--radius-card);padding:26px 30px;
  display:flex;align-items:center;gap:24px;flex-wrap:wrap;
  box-shadow:0 2px 6px rgba(22,32,46,.04),0 12px 28px rgba(255,138,43,.10);
}
.cta-strip .cta-text{flex:1;min-width:240px}
.cta-strip h2{font-size:22px;margin-bottom:6px}
.cta-strip p{color:var(--ink-600);font-size:15px;margin:0}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-700);color:rgba(255,255,255,.8);padding:60px 0 24px;margin-top:20px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{color:#fff}
.footer-brand .brand-mark i:nth-child(1){background:rgba(255,255,255,.55)}
.footer-brand .brand-mark i:nth-child(2){background:#fff}
.footer-brand .brand-mark i:nth-child(3){background:var(--accent-500)}
.footer-brand-text{font-size:18px;font-weight:700;color:#fff}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);margin-bottom:18px}
.qr-box{
  display:flex;align-items:center;gap:12px;padding:12px;border-radius:12px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);
  font-size:13px;line-height:1.5;color:rgba(255,255,255,.8);
}
.qr-box i{font-size:36px;color:#fff}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.78);transition:all .2s ease}
.footer-links a:hover{color:#fff;transform:translateX(2px)}
.footer-contact{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:rgba(255,255,255,.78)}
.footer-contact li i{margin-top:5px;color:var(--accent-500);flex-shrink:0}
.footer-contact a{color:#fff;text-decoration:underline;text-decoration-color:rgba(255,255,255,.35)}
.footer-contact a:hover{color:var(--accent-500)}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.6);
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:20px;bottom:24px;width:44px;height:44px;border-radius:10px;
  background:var(--brand-50);color:var(--brand-600);border:1px solid rgba(35,82,158,.2);
  display:flex;align-items:center;justify-content:center;font-size:16px;cursor:pointer;
  opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease,background-color .2s ease;
  z-index:1040;
}
.to-top.show{opacity:1;visibility:visible}
.to-top:hover{background:var(--brand-600);color:#fff}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  h1{font-size:34px}
  .contact-grid{grid-template-columns:1fr}
}
@media (max-width:991px){
  .sec{padding:56px 0}
  h1{font-size:30px}
  h2{font-size:24px}
  .qa-grid{grid-template-columns:1fr}
  .channel-grid{grid-template-columns:1fr 1fr}
  .hero-qa{padding:32px 0 48px}
  .hero-lead{font-size:16px}
}
@media (max-width:767px){
  .channel-grid{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .form-card{padding:24px}
  .cta-strip{padding:22px}
  .cta-strip .btn-main,.cta-strip .btn-ghost{width:100%}
  .faq-accordion .accordion-body{padding:16px 18px 20px 20px}
  .footer-bottom{font-size:12.5px}
}
@media (max-width:575px){
  h1{font-size:26px}
  h2{font-size:22px}
  .hero-search{flex-direction:column;align-items:stretch;padding:14px}
  .hero-search .btn-main{width:100%}
  .hero-search > i{display:none}
  .qa-card{padding:20px}
  .form-card{padding:20px}
}