/* roulang page: index */
:root{
  --c-primary:#1B54D6;
  --c-primary-d:#123FA8;
  --c-accent:#FF6A2B;
  --c-accent-d:#E85618;
  --c-mint:#12B3A0;
  --c-bg:#F6F8FC;
  --c-surface:#FFFFFF;
  --c-line:#E6EBF3;
  --c-line-soft:#EFF3FA;
  --t-1:#16233A;
  --t-2:#5B6B84;
  --t-3:#93A0B4;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-tag:6px;
  --sh-1:0 6px 20px rgba(15,35,74,.06);
  --sh-2:0 14px 32px rgba(15,35,74,.12);
  --sh-nav:0 4px 16px rgba(15,35,74,.07);
  --sp-sec:72px;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--t-1);
  font-family:"PingFang SC","HarmonyOS Sans","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease;}
a:visited{color:var(--c-primary);}
a:hover{color:var(--c-primary-d);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1{font-size:clamp(28px,3.4vw,44px);font-weight:700;line-height:1.25;letter-spacing:-.4px;}
h2{font-size:26px;font-weight:700;line-height:1.35;}
h3{font-size:19px;font-weight:600;line-height:1.5;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
.container{max-width:1240px;margin:0 auto;padding:0 24px;}
.section{padding:var(--sp-sec) 0;}
.section--tight{padding:52px 0;}
.section--muted{background:#FFFFFF;}
.sec-head{margin-bottom:32px;}
.sec-title{display:flex;align-items:center;gap:12px;font-size:26px;font-weight:700;}
.sec-title::before{content:"";width:4px;height:24px;border-radius:2px;background:var(--c-primary);flex:none;}
.sec-num{font-family:var(--mono);font-size:13px;color:var(--c-primary);letter-spacing:1px;font-weight:600;margin-bottom:8px;display:block;}
.sec-desc{margin-top:10px;color:var(--t-2);font-size:15px;max-width:720px;}
.sec-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:0 22px;height:44px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:background .2s ease,color .2s ease,box-shadow .2s ease,transform .15s ease;}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:0 6px 16px rgba(255,106,43,.24);}
.btn-primary:hover{background:var(--c-accent-d);color:#fff;}
.btn-primary:active{transform:translateY(1px);}
.btn-solid{background:var(--c-primary);color:#fff;}
.btn-solid:hover{background:var(--c-primary-d);color:#fff;}
.btn-outline{background:#fff;color:var(--c-primary);border-color:var(--c-primary);}
.btn-outline:hover{background:rgba(27,84,214,.06);color:var(--c-primary-d);}
.btn-pill{border-radius:999px;}
.btn-ghost{background:transparent;color:var(--c-primary);padding:0;height:auto;border:0;border-bottom:1px solid rgba(27,84,214,.4);border-radius:0;}
.btn-ghost:hover{color:var(--c-primary-d);border-bottom-color:var(--c-primary-d);}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.btn:disabled{opacity:.4;cursor:not-allowed;}

/* ============ 徽章 / 标签 ============ */
.badge{display:inline-flex;align-items:center;gap:5px;font-size:12px;line-height:1;padding:6px 10px;border-radius:var(--r-tag);font-weight:600;}
.badge-primary{background:rgba(27,84,214,.1);color:var(--c-primary-d);}
.badge-mint{background:rgba(18,179,160,.12);color:#0B8D7E;}
.badge-accent{background:rgba(255,106,43,.12);color:#C64A0F;}

/* ============ 顶部品牌行 ============ */
.topbar{background:#fff;border-bottom:1px solid var(--c-line);}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:76px;padding:12px 0;}
.brand{display:flex;align-items:center;gap:12px;min-width:0;}
.brand-mark{width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,var(--c-primary),#2E6BEA);display:flex;align-items:center;justify-content:center;color:#fff;font-size:19px;flex:none;position:relative;overflow:hidden;}
.brand-mark::after{content:"";position:absolute;width:54px;height:54px;border-radius:50%;border:2px solid rgba(255,255,255,.28);right:-22px;top:-16px;}
.brand-text{display:flex;flex-direction:column;min-width:0;}
.brand-logo{font-size:19px;font-weight:700;color:var(--t-1);line-height:1.25;white-space:nowrap;}
.brand-claim{font-size:12px;color:var(--t-3);line-height:1.6;}
.topbar-actions{display:flex;align-items:center;gap:14px;}
.search-mini{display:flex;align-items:center;gap:8px;height:40px;padding:0 14px;border:1px solid var(--c-line);border-radius:999px;background:var(--c-bg);color:var(--t-3);font-size:14px;min-width:190px;transition:border-color .2s ease,background .2s ease;}
.search-mini:hover{border-color:#CBD7EA;background:#fff;}
.search-mini i{color:var(--c-primary);font-size:13px;}
.quick-links{display:flex;align-items:center;gap:16px;font-size:14px;color:var(--t-2);}
.quick-links a{color:var(--t-2);}
.quick-links a:hover{color:var(--c-primary);}
.menu-toggle{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--c-line);background:#fff;color:var(--t-1);cursor:pointer;font-size:16px;}

/* ============ 频道行 ============ */
.channel-bar{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);backdrop-filter:saturate(160%) blur(6px);border-bottom:1px solid var(--c-line);box-shadow:var(--sh-nav);}
.channel-inner{display:flex;align-items:center;gap:10px;height:58px;}
.channel-nav{display:flex;align-items:center;gap:6px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;flex:1;}
.channel-nav::-webkit-scrollbar{display:none;}
.channel-link{display:inline-flex;align-items:center;gap:7px;padding:9px 18px;border-radius:999px;font-size:15px;font-weight:500;color:var(--t-2);white-space:nowrap;transition:background .2s ease,color .2s ease;}
.channel-link:hover{background:rgba(27,84,214,.07);color:var(--c-primary);}
.channel-link.is-active{background:var(--c-primary);color:#fff;font-weight:600;}
.channel-link.is-active:hover{background:var(--c-primary-d);color:#fff;}
.channel-link i{font-size:13px;opacity:.9;}
.channel-tail{display:flex;align-items:center;gap:12px;flex:none;}
.channel-tail .hot{font-size:13px;color:var(--t-3);}
.channel-tail .hot b{color:var(--c-accent);font-family:var(--mono);}

/* ============ 移动抽屉 ============ */
.drawer{display:none;background:#fff;border-bottom:1px solid var(--c-line);padding:8px 0 18px;}
.drawer.is-open{display:block;}
.drawer-group{padding:12px 0 4px;}
.drawer-group h4{font-size:12px;color:var(--t-3);letter-spacing:1px;font-weight:600;padding:0 24px 8px;}
.drawer-group a{display:block;padding:11px 24px;font-size:15px;color:var(--t-1);border-left:3px solid transparent;}
.drawer-group a:hover{background:#F2F6FF;border-left-color:var(--c-primary);color:var(--c-primary);}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;background:linear-gradient(180deg,#EEF3FD 0%,#F6F8FC 62%);}
.hero::before{content:"";position:absolute;width:520px;height:520px;border-radius:50%;background:rgba(27,84,214,.06);top:-220px;right:-140px;}
.hero::after{content:"";position:absolute;width:340px;height:340px;border-radius:50%;border:1px dashed rgba(255,106,43,.28);bottom:-180px;left:-120px;pointer-events:none;}
.hero-inner{position:relative;z-index:2;padding:64px 0 56px;}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--c-line);border-radius:999px;padding:7px 16px;font-size:13px;color:var(--t-2);box-shadow:var(--sh-1);}
.hero-eyebrow i{color:var(--c-mint);}
.hero h1{margin:20px 0 16px;}
.hero h1 .hl{color:var(--c-primary);}
.hero-sub{font-size:17px;color:var(--t-2);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-points{display:flex;flex-wrap:wrap;gap:18px;margin-top:26px;font-size:14px;color:var(--t-2);}
.hero-points span{display:inline-flex;align-items:center;gap:7px;}
.hero-points i{color:var(--c-mint);}
.hero-media{position:relative;}
.hero-media img{width:100%;height:340px;object-fit:cover;border-radius:18px;box-shadow:var(--sh-2);}
.hero-media .float-card{position:absolute;left:-18px;bottom:-24px;background:#fff;border-radius:14px;padding:16px 18px;box-shadow:var(--sh-2);display:flex;align-items:center;gap:12px;max-width:266px;}
.hero-media .float-card i{width:40px;height:40px;border-radius:11px;background:rgba(18,179,160,.12);color:var(--c-mint);display:flex;align-items:center;justify-content:center;flex:none;}
.hero-media .float-card b{display:block;font-size:15px;}
.hero-media .float-card small{color:var(--t-3);font-size:12px;}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:52px;}
.stat-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:20px 22px;box-shadow:var(--sh-1);transition:transform .25s ease,box-shadow .25s ease;}
.stat-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.stat-num{font-family:var(--mono);font-size:30px;font-weight:700;color:var(--c-primary);line-height:1.2;letter-spacing:-1px;}
.stat-num span{font-size:14px;color:var(--c-accent);margin-left:3px;}
.stat-label{font-size:13px;color:var(--t-2);margin-top:4px;}

/* ============ 频道入口卡 ============ */
.ch-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.ch-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);display:flex;flex-direction:column;gap:10px;color:var(--t-1);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;}
.ch-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#D5E1F8;color:var(--t-1);}
.ch-icon{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:18px;background:rgba(27,84,214,.1);color:var(--c-primary);}
.ch-card:nth-child(2) .ch-icon{background:rgba(255,106,43,.12);color:var(--c-accent);}
.ch-card:nth-child(3) .ch-icon{background:rgba(18,179,160,.12);color:var(--c-mint);}
.ch-card:nth-child(4) .ch-icon{background:rgba(27,84,214,.1);color:var(--c-primary-d);}
.ch-name{font-size:17px;font-weight:600;}
.ch-desc{font-size:14px;color:var(--t-2);line-height:1.7;}
.ch-go{margin-top:auto;font-size:13px;color:var(--c-primary);font-weight:600;display:inline-flex;align-items:center;gap:6px;}

/* ============ 赛事介绍 左大右小 ============ */
.feature-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:stretch;}
.feature-main{position:relative;border-radius:18px;overflow:hidden;box-shadow:var(--sh-1);min-height:420px;}
.feature-main img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;}
.feature-main .mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(15,27,51,.15) 0%,rgba(15,27,51,.86) 78%);}
.feature-main .txt{position:relative;z-index:2;height:100%;display:flex;flex-direction:column;justify-content:flex-end;padding:32px;color:#fff;}
.feature-main .txt h3{font-size:22px;color:#fff;margin-bottom:10px;}
.feature-main .txt p{font-size:14px;color:rgba(255,255,255,.82);max-width:460px;}
.feature-side{background:#fff;border:1px solid var(--c-line);border-radius:18px;padding:28px;box-shadow:var(--sh-1);display:flex;flex-direction:column;}
.step-row{display:flex;gap:16px;padding-bottom:26px;position:relative;}
.step-row:last-child{padding-bottom:0;}
.step-row::after{content:"";position:absolute;left:15px;top:34px;bottom:4px;border-left:2px dashed #D8E2F4;}
.step-row:last-child::after{display:none;}
.step-num{width:32px;height:32px;flex:none;border-radius:50%;background:rgba(27,84,214,.1);color:var(--c-primary);font-family:var(--mono);font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;position:relative;z-index:2;}
.step-row:nth-child(2) .step-num{background:rgba(255,106,43,.13);color:#C64A0F;}
.step-row:nth-child(3) .step-num{background:rgba(18,179,160,.13);color:#0B8D7E;}
.step-body h4{font-size:15px;font-weight:600;margin-bottom:4px;}
.step-body p{font-size:13.5px;color:var(--t-2);line-height:1.7;}

/* ============ 服务预览错落卡 ============ */
.benefit-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;align-items:start;}
.benefit-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:transform .25s ease,box-shadow .25s ease;}
.benefit-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.benefit-card:nth-child(2){margin-top:28px;}
.benefit-card:nth-child(4){margin-top:28px;}
.benefit-card .thumb{position:relative;overflow:hidden;height:158px;}
.benefit-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .25s ease;}
.benefit-card:hover .thumb img{transform:scale(1.03);}
.benefit-card .thumb .badge{position:absolute;top:12px;left:12px;}
.benefit-body{padding:20px 22px 22px;}
.benefit-body h3{font-size:17px;margin-bottom:8px;}
.benefit-body p{font-size:14px;color:var(--t-2);line-height:1.72;}
.benefit-body .btn-ghost{margin-top:14px;font-size:14px;font-weight:600;}

/* ============ 进度板块 ============ */
.progress-panel{background:#fff;border:1px solid var(--c-line);border-radius:20px;padding:40px;box-shadow:var(--sh-1);}
.progress-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:44px;}
.bar-item{margin-bottom:22px;}
.bar-item:last-child{margin-bottom:0;}
.bar-top{display:flex;justify-content:space-between;align-items:baseline;font-size:14px;margin-bottom:9px;}
.bar-top span{color:var(--t-2);}
.bar-top b{font-family:var(--mono);color:var(--c-primary);font-size:15px;}
.bar{height:8px;border-radius:999px;background:#E9EEF7;overflow:hidden;}
.bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--c-primary),#4B84F0);}
.bar i.mint{background:linear-gradient(90deg,var(--c-mint),#4ED3C2);}
.bar i.warm{background:linear-gradient(90deg,var(--c-accent),#FFA377);}
.stepper{display:flex;align-items:flex-start;justify-content:space-between;position:relative;margin-top:12px;}
.stepper::before{content:"";position:absolute;left:14px;right:14px;top:14px;border-top:2px dashed #D8E2F4;}
.node{position:relative;z-index:2;display:flex;flex-direction:column;align-items:center;gap:10px;text-align:center;flex:1;}
.node .dot{width:28px;height:28px;border-radius:50%;background:#fff;border:2px solid #CBD7EA;display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--t-3);font-family:var(--mono);}
.node.done .dot{background:var(--c-mint);border-color:var(--c-mint);color:#fff;}
.node.now .dot{background:var(--c-primary);border-color:var(--c-primary);color:#fff;box-shadow:0 0 0 6px rgba(27,84,214,.14);}
.node small{font-size:12.5px;color:var(--t-2);line-height:1.5;}
.panel-note{margin-top:28px;font-size:13px;color:var(--t-3);border-top:1px solid var(--c-line);padding-top:16px;}

/* ============ 最新信息列表 ============ */
.news-list{display:flex;flex-direction:column;gap:14px;}
.news-row{display:flex;gap:20px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:18px;box-shadow:var(--sh-1);position:relative;overflow:hidden;color:var(--t-1);transition:background .2s ease,box-shadow .25s ease,transform .25s ease;}
.news-row::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--c-primary);transform:scaleY(0);transform-origin:center;transition:transform .25s ease;}
.news-row:hover{background:#F2F6FF;box-shadow:var(--sh-2);transform:translateY(-2px);color:var(--t-1);}
.news-row:hover::before{transform:scaleY(1);}
.news-thumb{width:200px;flex:none;border-radius:var(--r-img);overflow:hidden;aspect-ratio:16/9;background:#E9EEF7;}
.news-thumb img{width:100%;height:100%;object-fit:cover;}
.news-body{flex:1;min-width:0;display:flex;flex-direction:column;}
.news-title{font-size:18px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-sum{font-size:14px;color:var(--t-2);margin-top:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:auto;padding-top:12px;font-size:13px;color:var(--t-3);}
.news-meta .dot-sep{width:3px;height:3px;border-radius:50%;background:#C9D3E2;}
.empty-state{height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;background:#fff;border:1px dashed var(--c-line);border-radius:var(--r-card);color:var(--t-3);}
.empty-state i{font-size:28px;color:#C9D3E2;}
.empty-state p{font-size:14px;}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;}
.faq-item{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);margin-bottom:14px;box-shadow:var(--sh-1);overflow:hidden;transition:box-shadow .2s ease,border-color .2s ease;}
.faq-item[open]{border-color:#D5E1F8;box-shadow:var(--sh-2);}
.faq-item summary{list-style:none;cursor:pointer;padding:20px 24px;font-size:16px;font-weight:600;display:flex;align-items:center;justify-content:space-between;gap:16px;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary i{color:var(--c-primary);font-size:14px;transition:transform .2s ease;flex:none;}
.faq-item[open] summary i{transform:rotate(45deg);}
.faq-body{padding:0 24px 22px 27px;border-left:3px solid var(--c-primary);margin-left:0;color:var(--t-2);font-size:15px;}
.faq-item[open] .faq-body{background:linear-gradient(90deg,rgba(27,84,214,.045),rgba(27,84,214,0));}

/* ============ CTA + 表单 ============ */
.cta-section{background:#0F1B33;color:#fff;position:relative;overflow:hidden;}
.cta-section::before{content:"";position:absolute;width:420px;height:420px;border-radius:50%;background:rgba(27,84,214,.28);top:-180px;left:-120px;}
.cta-section::after{content:"";position:absolute;width:300px;height:300px;border-radius:50%;border:1px dashed rgba(255,106,43,.4);right:-90px;bottom:-140px;}
.cta-grid{position:relative;z-index:2;display:grid;grid-template-columns:.95fr 1.05fr;gap:48px;align-items:center;padding:72px 0;}
.cta-grid h2{color:#fff;font-size:30px;}
.cta-grid .cta-sub{color:rgba(255,255,255,.72);margin-top:14px;font-size:15px;max-width:460px;}
.cta-list{margin-top:24px;display:flex;flex-direction:column;gap:12px;font-size:14px;color:rgba(255,255,255,.8);}
.cta-list span{display:flex;align-items:center;gap:10px;}
.cta-list i{color:var(--c-mint);}
.form-card{background:#fff;border-radius:18px;padding:30px;box-shadow:0 20px 44px rgba(6,14,32,.34);color:var(--t-1);}
.form-card h3{font-size:19px;margin-bottom:6px;}
.form-card .form-tip{font-size:13.5px;color:var(--t-2);margin-bottom:20px;}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.field{display:flex;flex-direction:column;gap:7px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:13px;color:var(--t-2);font-weight:500;}
.field input,.field select{height:46px;border:1px solid #E1E8F2;border-radius:var(--r-btn);padding:0 14px;background:#fff;transition:border-color .2s ease,box-shadow .2s ease;width:100%;}
.field input:focus,.field select:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(27,84,214,.12);}
.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='%235B6B84' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;background-size:11px;}
.field input.err{border-color:#E0453C;box-shadow:0 0 0 4px rgba(224,69,60,.1);}
.err-msg{font-size:12px;color:#E0453C;display:none;}
.err-msg.show{display:block;}
.check-line{display:flex;align-items:flex-start;gap:9px;font-size:13px;color:var(--t-2);grid-column:1 / -1;}
.check-line input{width:16px;height:16px;margin-top:4px;accent-color:var(--c-primary);}
.form-grid .btn{grid-column:1 / -1;height:48px;border-radius:var(--r-btn);}
.form-ok{display:none;margin-top:14px;font-size:13.5px;color:#0B8D7E;background:rgba(18,179,160,.1);border-radius:8px;padding:10px 14px;}
.form-ok.show{display:block;}
.pulse::after{content:"";display:inline-block;width:4px;height:4px;border-radius:50%;background:#fff;margin-left:3px;animation:pulse 1s infinite alternate;}
@keyframes pulse{from{opacity:.25;}to{opacity:1;}}

/* ============ 页脚 ============ */
.footer{background:#0F1B33;color:rgba(255,255,255,.66);font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;padding:60px 0 40px;}
.footer h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600;}
.footer-brand .flogo{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .flogo .brand-mark{width:36px;height:36px;border-radius:10px;font-size:16px;}
.footer-brand .flogo b{color:#fff;font-size:16px;}
.footer-brand p{line-height:1.8;font-size:13.5px;}
.footer-list li{margin-bottom:10px;}
.footer-list a{color:rgba(255,255,255,.66);}
.footer-list a:hover{color:#fff;text-decoration:underline;}
.footer-contact li{display:flex;gap:10px;margin-bottom:12px;line-height:1.7;font-size:13.5px;}
.footer-contact i{color:var(--c-mint);margin-top:4px;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:20px 0 28px;font-size:13px;}
.footer-bottom a{color:rgba(255,255,255,.66);}
.footer-bottom a:hover{color:#fff;}
.backtop{position:fixed;right:22px;bottom:24px;width:44px;height:44px;border-radius:12px;background:#fff;border:1px solid var(--c-line);color:var(--c-primary);display:flex;align-items:center;justify-content:center;box-shadow:var(--sh-2);cursor:pointer;opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:80;}
.backtop.show{opacity:1;visibility:visible;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .ch-grid{grid-template-columns:repeat(2,1fr);}
  .benefit-grid{grid-template-columns:repeat(2,1fr);}
  .benefit-card:nth-child(3){margin-top:0;}
}
@media (max-width:1023px){
  :root{--sp-sec:56px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-media img{height:300px;}
  .hero-media .float-card{left:12px;bottom:-18px;}
  .feature-grid{grid-template-columns:1fr;}
  .feature-main{min-height:320px;}
  .progress-grid{grid-template-columns:1fr;gap:32px;}
  .cta-grid{grid-template-columns:1fr;gap:32px;padding:56px 0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .search-mini{display:none;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .topbar-inner{min-height:64px;}
  .brand-logo{font-size:16px;}
  .brand-claim{display:none;}
  .quick-links{display:none;}
  .menu-toggle{display:flex;align-items:center;justify-content:center;}
  .channel-bar{display:none;}
  .hero-inner{padding:40px 0 36px;}
  .hero-sub{font-size:15.5px;}
  .hero-media img{height:220px;}
  .hero-media .float-card{padding:12px 14px;max-width:230px;}
  .hero-stats{grid-template-columns:1fr;gap:12px;margin-top:44px;}
  .stat-card{display:flex;align-items:center;gap:14px;padding:16px 18px;}
  .stat-num{font-size:24px;}
  .hero-actions .btn{flex:1 1 auto;}
  .ch-grid{grid-template-columns:1fr;}
  .ch-card{padding:20px;}
  .benefit-grid{grid-template-columns:1fr;}
  .benefit-card:nth-child(2),.benefit-card:nth-child(4){margin-top:0;}
  .progress-panel{padding:24px 20px;}
  .stepper{flex-wrap:wrap;gap:20px;}
  .stepper::before{display:none;}
  .node{flex:1 1 40%;}
  .news-row{flex-direction:column;gap:14px;padding:14px;}
  .news-thumb{width:100%;}
  .faq-item summary{padding:16px 18px;font-size:15px;}
  .faq-body{padding:0 18px 18px 20px;}
  .form-grid{grid-template-columns:1fr;}
  .form-card{padding:22px 18px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding:44px 0 28px;}
  .backtop{right:14px;bottom:16px;}
}
@media (max-width:479px){
  h1{font-size:26px;}
  .sec-title{font-size:22px;}
  .cta-grid h2{font-size:24px;}
  .hero-actions{flex-direction:column;}
  .hero-actions .btn{width:100%;}
  .form-grid .btn{width:100%;}
}

/* roulang page: article */
:root{
  --c-primary:#1B54D6;
  --c-primary-d:#123FA8;
  --c-accent:#FF6A2B;
  --c-mint:#12B3A0;
  --c-bg:#F6F8FC;
  --c-surface:#FFFFFF;
  --c-line:#E6EBF3;
  --t1:#16233A;
  --t2:#5B6B84;
  --t3:#93A0B4;
  --dark:#0F1B33;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-tag:6px;
  --sh-1:0 6px 20px rgba(15,35,74,.06);
  --sh-2:0 14px 32px rgba(15,35,74,.12);
  --mono:"SFMono-Regular",Consolas,"Roboto Mono",Menlo,monospace;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:"PingFang SC","HarmonyOS Sans","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  background:var(--c-bg);
  color:var(--t1);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--c-primary-d)}
a:visited{color:var(--c-primary)}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--t1);line-height:1.35}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.container{max-width:1240px;margin:0 auto;padding:0 24px}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}

/* ============ 顶部品牌行 ============ */
.topbar{background:var(--c-surface);border-bottom:1px solid var(--c-line)}
.topbar-inner{display:flex;align-items:center;gap:24px;min-height:70px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex-shrink:0;
  background:linear-gradient(135deg,var(--c-primary),var(--c-mint));
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:16px;
  box-shadow:0 6px 16px rgba(27,84,214,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text b{font-size:18px;font-weight:700;letter-spacing:.2px}
.brand-text span{font-size:12px;color:var(--t3);letter-spacing:.5px}
.topbar-right{margin-left:auto;display:flex;align-items:center;gap:16px}
.quick-links{display:flex;align-items:center;gap:18px}
.quick-links a{font-size:14px;color:var(--t2)}
.quick-links a:hover{color:var(--c-primary)}
.search-mini{
  display:flex;align-items:center;gap:8px;height:40px;padding:0 14px;
  border:1px solid var(--c-line);border-radius:999px;background:#FAFBFE;
  color:var(--t3);font-size:14px;transition:border-color .2s ease,background .2s ease;
}
.search-mini:focus-within{border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 4px rgba(27,84,214,.12)}
.search-mini input{border:0;background:transparent;outline:none;width:120px;font-size:14px;color:var(--t1)}
.search-mini input::placeholder{color:var(--t3)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:background .2s ease,color .2s ease,box-shadow .2s ease,transform .12s ease,border-color .2s ease;
}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:0 8px 18px rgba(255,106,43,.26)}
.btn-primary:hover{background:#EE5A19;color:#fff}
.btn-primary:active{transform:translateY(1px);background:#DE4F12}
.btn-solid{background:var(--c-primary);color:#fff}
.btn-solid:hover{background:var(--c-primary-d);color:#fff}
.btn-solid:active{transform:translateY(1px)}
.btn-outline{background:#fff;border-color:rgba(27,84,214,.45);color:var(--c-primary)}
.btn-outline:hover{background:rgba(27,84,214,.06);color:var(--c-primary-d)}
.btn-pill{border-radius:999px}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn:disabled{opacity:.4;cursor:not-allowed}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--c-line);
  background:#fff;color:var(--t1);cursor:pointer;font-size:17px;
}
.nav-toggle:hover{border-color:rgba(27,84,214,.4);color:var(--c-primary)}

/* ============ 频道行 ============ */
.channelbar{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  border-bottom:1px solid var(--c-line);
  box-shadow:0 4px 14px rgba(15,35,74,.05);
  backdrop-filter:saturate(160%) blur(8px);
}
.channel-inner{display:flex;align-items:center;gap:10px;height:58px;position:relative}
.channel-tabs{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;padding:8px 0}
.channel-tabs::-webkit-scrollbar{display:none}
.channel-tab{
  display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 18px;
  border-radius:999px;font-size:15px;color:var(--t2);white-space:nowrap;
  background:transparent;transition:background .2s ease,color .2s ease;
}
.channel-tab:hover{background:#EEF3FF;color:var(--c-primary)}
.channel-tab.is-active{background:var(--c-primary);color:#fff;font-weight:600;box-shadow:0 6px 16px rgba(27,84,214,.26)}
.channel-tab.is-active:hover{background:var(--c-primary-d);color:#fff}
.channel-tabs-wrap{position:relative;flex:1;overflow:hidden}
.channel-tabs-wrap::after{
  content:"";position:absolute;top:0;right:0;width:46px;height:100%;
  background:linear-gradient(90deg,rgba(255,255,255,0),rgba(255,255,255,.96));pointer-events:none;
}
.channel-aside{margin-left:auto;display:flex;align-items:center;gap:10px;flex-shrink:0;padding-left:12px}

/* 移动抽屉 */
.drawer{
  display:none;position:fixed;inset:0;z-index:200;background:rgba(15,27,51,.45);
}
.drawer.open{display:block}
.drawer-panel{
  position:absolute;top:0;right:0;width:min(84vw,340px);height:100%;background:#fff;
  padding:22px 20px;overflow-y:auto;transform:translateX(100%);transition:transform .2s ease;
  box-shadow:-10px 0 30px rgba(15,35,74,.18);
}
.drawer.open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-head b{font-size:17px}
.drawer-close{border:0;background:#F2F6FF;color:var(--t1);width:36px;height:36px;border-radius:10px;cursor:pointer}
.drawer-group{margin-bottom:20px}
.drawer-group h4{font-size:12px;letter-spacing:1px;color:var(--t3);font-weight:600;margin-bottom:10px}
.drawer-group a{display:block;padding:11px 12px;border-radius:10px;font-size:15px;color:var(--t1)}
.drawer-group a:hover{background:#F2F6FF;color:var(--c-primary)}

/* ============ 阅读进度 ============ */
.read-progress{position:fixed;top:0;left:0;height:2px;width:0;background:var(--c-primary);z-index:300;transition:width .1s linear}

/* ============ 文章头部 ============ */
.article-banner{
  background-image:linear-gradient(115deg,rgba(15,27,51,.86),rgba(27,84,214,.62)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  padding:36px 0 52px;color:#fff;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.78);margin-bottom:22px}
.breadcrumb a{color:rgba(255,255,255,.9)}
.breadcrumb a:hover{color:#fff;text-decoration:underline}
.breadcrumb i{font-size:10px;color:rgba(255,255,255,.55)}
.article-title{font-size:clamp(28px,3.4vw,44px);font-weight:700;line-height:1.25;color:#fff;max-width:900px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:20px}
.meta-chip{
  display:inline-flex;align-items:center;gap:7px;height:32px;padding:0 13px;border-radius:999px;
  font-size:13px;background:rgba(255,255,255,.16);color:#fff;border:1px solid rgba(255,255,255,.24);
}
.meta-chip.hot{background:rgba(255,106,43,.92);border-color:transparent;font-weight:600}

/* ============ 主体布局 ============ */
.main-wrap{padding:52px 0 72px}
.layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:36px;align-items:start}
.panel{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:32px 36px;
}
.cover-figure{margin:0 0 26px;border-radius:var(--r-img);overflow:hidden;background:#EDF1F8}
.cover-figure img{width:100%;height:auto;aspect-ratio:16/9;object-fit:cover}

/* 正文排版 */
.article-body{font-size:16px;line-height:1.9;color:#22304A;max-width:820px}
.article-body p{margin:0 0 22px}
.article-body h2{
  font-size:24px;font-weight:700;margin:46px 0 18px;padding-left:14px;position:relative;line-height:1.4;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:5px;bottom:5px;width:4px;border-radius:2px;background:var(--c-primary);
}
.article-body h3{font-size:19px;font-weight:600;margin:32px 0 14px}
.article-body h4{font-size:17px;font-weight:600;margin:26px 0 12px;color:var(--t1)}
.article-body ul,.article-body ol{padding-left:22px;margin:0 0 22px}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:8px 0}
.article-body li::marker{color:var(--c-primary)}
.article-body blockquote{
  margin:26px 0;padding:18px 24px;background:#F2F6FF;border-left:4px solid var(--c-primary);
  border-radius:0 10px 10px 0;color:var(--t2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{max-width:100%;height:auto;margin:26px auto;border-radius:var(--r-img)}
.article-body figure{margin:26px 0}
.article-body figcaption{font-size:13px;color:var(--t3);text-align:center;margin-top:8px}
.article-body a{color:var(--c-primary);border-bottom:1px solid rgba(27,84,214,.32)}
.article-body a:hover{color:var(--c-primary-d);border-bottom-color:var(--c-primary-d)}
.article-body table{
  width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;
  border:1px solid var(--c-line);border-radius:12px;overflow:hidden;
}
.article-body thead th{background:#F2F6FF;color:var(--t1);font-weight:600}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--c-line);text-align:left}
.article-body tbody tr:nth-child(even){background:#FAFBFE}
.article-body tbody tr:hover{background:#F4F8FF}
.article-body hr{border:0;border-top:1px dashed var(--c-line);margin:34px 0}
.article-body code{
  font-family:var(--mono);font-size:14px;background:#F2F6FF;padding:2px 7px;border-radius:6px;color:var(--c-primary-d);
}

/* 空态 */
.empty-state{
  max-width:520px;margin:10px auto;padding:48px 24px;text-align:center;
  background:#FAFBFE;border:1px dashed var(--c-line);border-radius:var(--r-card);
}
.empty-state i{font-size:34px;color:var(--t3);margin-bottom:14px;display:block}
.empty-state p{font-size:14px;color:var(--t2);margin-bottom:18px}

/* 文章尾部操作 */
.article-foot{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  margin-top:36px;padding-top:26px;border-top:1px solid var(--c-line);
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:var(--r-tag);
  font-size:12px;background:#EEF3FF;color:var(--c-primary);font-weight:600;
}
.tag.mint{background:#E4F7F4;color:#0E8C7D}
.tag.orange{background:#FFF0E8;color:#D9500F}

/* 侧栏 */
.aside{position:sticky;top:82px;display:flex;flex-direction:column;gap:20px}
.aside-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:20px;
}
.aside-card h3{
  font-size:15px;font-weight:700;display:flex;align-items:center;gap:8px;margin-bottom:14px;
}
.aside-card h3::before{content:"";width:4px;height:15px;border-radius:2px;background:var(--c-primary)}
.aside-nav a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:10px 12px;border-radius:10px;font-size:14px;color:var(--t2);
}
.aside-nav a:hover{background:#F2F6FF;color:var(--c-primary)}
.aside-nav a i{font-size:12px;color:var(--t3)}
.mini-post{display:flex;gap:12px;padding:10px 0;border-bottom:1px dashed var(--c-line)}
.mini-post:last-child{border-bottom:0;padding-bottom:0}
.mini-post img{width:74px;height:52px;border-radius:8px;object-fit:cover;flex-shrink:0}
.mini-post b{font-size:14px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mini-post span{font-size:12px;color:var(--t3)}

/* 继续浏览 */
.section{padding:0 0 72px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px}
.section-head h2{font-size:26px;font-weight:700;display:flex;align-items:center;gap:12px}
.section-head h2 .num{
  font-family:var(--mono);font-size:14px;color:var(--c-primary);background:#EEF3FF;
  border-radius:8px;padding:3px 9px;font-weight:600;
}
.section-head p{font-size:14px;color:var(--t2);margin-top:6px}
.more-link{font-size:14px;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px}
.more-link:hover{gap:10px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.related-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);transition:transform .25s ease,box-shadow .25s ease;display:block;
}
.related-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.related-card .thumb{overflow:hidden;background:#EDF1F8}
.related-card .thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s ease}
.related-card:hover .thumb img{transform:scale(1.03)}
.related-body{padding:18px 20px 22px}
.related-body b{font-size:17px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related-body p{font-size:14px;color:var(--t2);margin-top:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related-meta{display:flex;align-items:center;gap:10px;margin-top:14px;font-size:12px;color:var(--t3)}
.dot{width:3px;height:3px;border-radius:50%;background:var(--t3);display:inline-block}

/* CTA 表单 */
.cta-box{
  background:linear-gradient(120deg,#12224A,#1B54D6 62%,#12B3A0);
  border-radius:18px;padding:44px 46px;color:#fff;
  display:grid;grid-template-columns:1fr 420px;gap:40px;align-items:center;
  box-shadow:0 18px 40px rgba(18,63,168,.24);
}
.cta-box h2{color:#fff;font-size:28px;line-height:1.4}
.cta-box p{color:rgba(255,255,255,.82);margin-top:14px;font-size:15px;max-width:460px}
.cta-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.cta-points span{
  display:inline-flex;align-items:center;gap:7px;font-size:13px;padding:7px 13px;
  border-radius:999px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.2);
}
.form-card{background:#fff;border-radius:var(--r-card);padding:24px;box-shadow:0 12px 30px rgba(9,24,58,.18)}
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;color:var(--t2);margin-bottom:6px;font-weight:600}
.field input,.field select,.field textarea{
  width:100%;height:46px;padding:0 14px;border:1px solid #E1E8F2;border-radius:10px;
  background:#FBFCFE;outline:none;transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field select{appearance:none;background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%235B6B84' d='M2 4l4 4 4-4z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 4px rgba(27,84,214,.12)}
.field input.error{border-color:#E23D3D;box-shadow:0 0 0 4px rgba(226,61,61,.12)}
.err-text{font-size:12px;color:#E23D3D;margin-top:6px;display:none}
.err-text.show{display:block}
.check-line{display:flex;align-items:flex-start;gap:9px;font-size:13px;color:var(--t2);margin:6px 0 16px}
.check-line input{width:16px;height:16px;margin-top:3px;accent-color:var(--c-primary)}
.form-card .btn{width:100%}
.form-ok{display:none;font-size:13px;color:var(--c-mint);text-align:center;margin-top:12px}
.form-ok.show{display:block}

/* 页脚 */
.footer{background:var(--dark);color:rgba(255,255,255,.72);padding:60px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:36px}
.footer h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600}
.footer-brand .flogo{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .flogo b{color:#fff;font-size:17px}
.footer-brand .brand-mark{width:34px;height:34px;font-size:14px}
.footer-brand p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.62);max-width:360px}
.footer-list li{margin-bottom:11px}
.footer-list a{font-size:14px;color:rgba(255,255,255,.68)}
.footer-list a:hover{color:#fff;text-decoration:underline}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:rgba(255,255,255,.68);margin-bottom:12px;line-height:1.7}
.footer-contact i{color:var(--c-mint);margin-top:5px}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  border-top:1px solid rgba(255,255,255,.12);margin-top:44px;padding-top:20px;font-size:13px;color:rgba(255,255,255,.5);
}
.to-top{
  position:fixed;right:22px;bottom:26px;width:46px;height:46px;border-radius:14px;border:0;
  background:var(--c-primary);color:#fff;cursor:pointer;box-shadow:0 10px 24px rgba(27,84,214,.35);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease,transform .25s ease;z-index:120;
}
.to-top.show{opacity:1;visibility:visible}
.to-top:hover{background:var(--c-primary-d);transform:translateY(-2px)}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .layout{grid-template-columns:1fr}
  .aside{position:static}
  .cta-box{grid-template-columns:1fr;padding:34px 28px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .quick-links{display:none}
  .search-mini{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .topbar-right{gap:10px}
  .brand-text b{font-size:16px}
  .channel-inner{height:54px}
  .article-banner{padding:26px 0 40px}
  .main-wrap{padding:34px 0 52px}
  .panel{padding:22px 20px}
  .section{padding-bottom:52px}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px}
  .section-head h2{font-size:22px}
  .related-grid{grid-template-columns:1fr;gap:18px}
  .cta-box h2{font-size:22px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .to-top{right:14px;bottom:16px}
}
@media (max-width:520px){
  .brand-text span{display:none}
  .article-title{font-size:24px}
  .cta-box{padding:26px 20px}
  .btn{width:100%}
  .btn.btn-inline{width:auto}
  .article-meta{gap:8px}
}

/* roulang page: category1 */
:root{
  --c-primary:#1B54D6;
  --c-primary-d:#123FA8;
  --c-accent:#FF6A2B;
  --c-mint:#12B3A0;
  --c-bg:#F6F8FC;
  --c-surface:#FFFFFF;
  --c-line:#E6EBF3;
  --t-strong:#16233A;
  --t-body:#5B6B84;
  --t-weak:#93A0B4;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-card:0 6px 20px rgba(15,35,74,.06);
  --sh-hover:0 14px 32px rgba(15,35,74,.12);
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--t-strong);
  background:var(--c-bg);
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease,background-color .2s ease,opacity .2s ease;}
a:hover{color:var(--c-primary-d);}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--c-primary);
  outline-offset:2px;
}
a:visited{color:var(--c-primary);}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;color:var(--t-strong);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font:inherit;cursor:pointer;border:none;background:none;}
input,select,textarea{font:inherit;color:inherit;}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;}
.num{font-family:"Inter","SFMono-Regular",Consolas,"Liberation Mono",monospace;font-variant-numeric:tabular-nums;}

/* ============ 顶部导航 ============ */
.site-header{position:relative;z-index:60;}
.brand-bar{background:var(--c-surface);border-bottom:1px solid var(--c-line);}
.brand-inner{display:flex;align-items:center;gap:20px;min-height:74px;}
.logo{display:flex;align-items:center;gap:10px;color:var(--t-strong);font-weight:700;font-size:20px;letter-spacing:.2px;}
.logo:visited{color:var(--t-strong);}
.logo:hover{color:var(--c-primary);}
.brand-mark{
  width:36px;height:36px;border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-d));
  color:#fff;font-size:16px;flex:none;
  box-shadow:0 6px 14px rgba(27,84,214,.28);
}
.brand-slogan{
  font-size:13px;color:var(--t-body);
  padding:4px 12px;border-left:1px solid var(--c-line);
  white-space:nowrap;
}
.brand-tools{display:flex;align-items:center;gap:8px;margin-left:auto;}
.tool-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;color:var(--t-body);padding:8px 12px;border-radius:var(--r-btn);
}
.tool-link:hover{background:#F2F6FF;color:var(--c-primary);}
.tool-link i{font-size:13px;color:var(--c-primary);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:13px 22px;border-radius:var(--r-btn);
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
  text-align:center;
}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:0 8px 18px rgba(255,106,43,.24);}
.btn-primary:hover{background:#EB5A1B;color:#fff;transform:translateY(-1px);box-shadow:0 12px 24px rgba(255,106,43,.3);}
.btn-primary:active{transform:translateY(1px);background:#D54E14;}
.btn-outline{background:#fff;color:var(--c-primary);border:1px solid var(--c-primary);}
.btn-outline:hover{background:rgba(27,84,214,.06);color:var(--c-primary-d);}
.btn-ghost{background:transparent;color:var(--c-primary);padding:8px 0;font-weight:600;}
.btn-ghost:hover{color:var(--c-primary-d);}
.btn-ghost i{font-size:12px;transition:transform .2s ease;}
.btn-ghost:hover i{transform:translateX(3px);}
.btn-pill{border-radius:var(--r-pill);padding:12px 22px;}
.btn-sm{padding:10px 18px;font-size:14px;}

.channel-bar{
  position:sticky;top:0;z-index:55;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(150%) blur(8px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease;
}
.channel-bar.is-stuck{box-shadow:0 8px 22px rgba(15,35,74,.08);}
.channel-inner{display:flex;align-items:center;gap:18px;min-height:58px;}
.channels{display:flex;align-items:center;gap:6px;overflow-x:auto;scrollbar-width:none;flex:1;}
.channels::-webkit-scrollbar{display:none;}
.channels a{
  padding:8px 16px;border-radius:var(--r-pill);font-size:15px;
  color:var(--t-body);white-space:nowrap;font-weight:500;
}
.channels a:hover{background:#F2F6FF;color:var(--c-primary);}
.channels a.active{
  background:var(--c-primary);color:#fff;font-weight:600;
  box-shadow:0 6px 14px rgba(27,84,214,.24);
}
.channels a.active:visited{color:#fff;}
.quick-links{display:flex;align-items:center;gap:4px;}
.quick-links a{font-size:14px;color:var(--t-body);padding:7px 12px;border-radius:var(--r-btn);}
.quick-links a:hover{background:#F2F6FF;color:var(--c-primary);}
.menu-toggle{
  display:none;width:42px;height:42px;border-radius:var(--r-btn);
  align-items:center;justify-content:center;background:#F2F6FF;color:var(--c-primary);font-size:17px;
}
.drawer{
  display:none;background:var(--c-surface);border-top:1px solid var(--c-line);
  padding:18px 24px 26px;box-shadow:0 16px 26px rgba(15,35,74,.1);
}
.drawer.open{display:block;animation:drawerIn .2s ease;}
@keyframes drawerIn{from{opacity:0;transform:translateY(-6px);}to{opacity:1;transform:none;}}
.drawer-group{margin-bottom:18px;}
.drawer-group h4{font-size:12px;letter-spacing:1px;color:var(--t-weak);margin-bottom:8px;}
.drawer-group a{display:block;padding:10px 12px;border-radius:var(--r-btn);font-size:15px;color:var(--t-body);}
.drawer-group a:hover,.drawer-group a.active{background:#F2F6FF;color:var(--c-primary);}
.drawer-group a.active{font-weight:600;}

/* ============ 面包屑 ============ */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t-weak);padding-top:22px;}
.crumb a{color:var(--t-body);}
.crumb a:hover{color:var(--c-primary);}
.crumb span.dot{color:#C3CCDA;}

/* ============ Hero ============ */
.page-hero{padding:22px 0 56px;}
.hero-panel{
  position:relative;overflow:hidden;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:20px;box-shadow:var(--sh-card);
  display:grid;grid-template-columns:1.05fr .95fr;gap:0;
}
.hero-copy{padding:46px 44px;display:flex;flex-direction:column;justify-content:center;gap:18px;position:relative;z-index:2;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;align-self:flex-start;
  font-size:12px;font-weight:600;letter-spacing:.5px;
  color:var(--c-primary);background:rgba(27,84,214,.09);
  padding:6px 12px;border-radius:var(--r-pill);
}
.hero-copy h1{font-size:clamp(28px,3.4vw,44px);line-height:1.25;}
.hero-copy h1 em{font-style:normal;color:var(--c-primary-d);}
.hero-lead{font-size:17px;color:var(--t-body);max-width:52ch;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:4px;}
.hero-visual{position:relative;min-height:380px;background:#EAF0FB;}
.hero-visual img{width:100%;height:100%;object-fit:cover;}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(255,255,255,.96),rgba(255,255,255,0) 42%);
}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,1fr);gap:18px;
  margin-top:-26px;position:relative;z-index:5;
  padding:0 32px;
}
.stat-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:18px 20px;
}
.stat-card b{display:block;font-size:26px;color:var(--c-primary-d);line-height:1.2;}
.stat-card span{font-size:13px;color:var(--t-body);}

/* ============ 通用板块 ============ */
.section{padding:64px 0;}
.section.alt{background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;flex-wrap:wrap;}
.section-title{display:flex;align-items:flex-start;gap:12px;}
.section-title::before{content:"";width:4px;border-radius:2px;background:var(--c-primary);flex:none;align-self:stretch;min-height:26px;}
.section-title h2{font-size:26px;}
.section-title .idx{font-size:13px;color:var(--t-weak);letter-spacing:1px;display:block;margin-bottom:4px;}
.section-sub{font-size:14px;color:var(--t-body);margin-top:8px;max-width:64ch;}
.head-link{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}

/* ============ 频道标签条 ============ */
.chip-row{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:28px;}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:500;color:var(--t-body);
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-pill);
  padding:9px 16px;transition:all .2s ease;
}
.chip i{font-size:12px;color:var(--c-primary);}
.chip:hover{border-color:var(--c-primary);color:var(--c-primary);box-shadow:var(--sh-card);transform:translateY(-2px);}
.chip.active{background:var(--c-primary);border-color:var(--c-primary);color:#fff;}
.chip.active i{color:#fff;}
.chip.active:visited{color:#fff;}

/* ============ 大图文卡（2列） ============ */
.card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.feature-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-card);
  transition:transform .25s ease,box-shadow .25s ease;
  display:flex;flex-direction:column;
}
.feature-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.feature-media{position:relative;overflow:hidden;aspect-ratio:16/9;background:#EAF0FB;}
.feature-media img{width:100%;height:100%;object-fit:cover;transition:transform .25s ease;}
.feature-card:hover .feature-media img{transform:scale(1.03);}
.badge{
  position:absolute;top:14px;left:14px;
  font-size:12px;font-weight:600;padding:5px 11px;border-radius:6px;
  background:rgba(255,255,255,.94);
}
.badge-blue{color:var(--c-primary);}
.badge-mint{color:#0E8E7E;background:rgba(18,179,160,.16);}
.badge-accent{color:#C64D14;background:rgba(255,106,43,.16);}
.feature-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.feature-body h3{font-size:19px;}
.feature-body p{font-size:14px;color:var(--t-body);line-height:1.8;}
.meta-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:13px;color:var(--t-weak);}
.meta-row .tag{font-size:12px;padding:3px 9px;border-radius:6px;background:rgba(27,84,214,.09);color:var(--c-primary);}
.meta-row .sep{width:4px;height:4px;border-radius:50%;background:#C3CCDA;}
.feature-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:8px;}

/* ============ 精简列表 ============ */
.simple-list{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-card);overflow:hidden;}
.simple-item{
  position:relative;display:flex;gap:18px;align-items:flex-start;
  padding:20px 24px;border-bottom:1px solid var(--c-line);
  transition:background-color .2s ease;
}
.simple-item:last-child{border-bottom:none;}
.simple-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:0;
  background:var(--c-primary);transition:width .2s ease;
}
.simple-item:hover{background:#F2F6FF;}
.simple-item:hover::before{width:3px;}
.simple-item .num-idx{
  font-size:16px;font-weight:700;color:var(--c-primary);flex:none;
  width:34px;height:34px;border-radius:9px;background:rgba(27,84,214,.09);
  display:flex;align-items:center;justify-content:center;
}
.simple-item h3{font-size:16px;margin-bottom:4px;}
.simple-item p{font-size:14px;color:var(--t-body);}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);overflow:hidden;
}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 22px;
  font-size:16px;font-weight:600;color:var(--t-strong);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary i{color:var(--c-primary);font-size:14px;transition:transform .2s ease;}
.faq-item[open] summary i{transform:rotate(180deg);}
.faq-item[open]{border-left:3px solid var(--c-primary);background:#FBFCFE;}
.faq-item .faq-body{padding:0 22px 20px;font-size:15px;color:var(--t-body);line-height:1.85;}

/* ============ CTA / 表单 ============ */
.cta-band{
  background:linear-gradient(140deg,#123FA8,#1B54D6 62%,#2A6BE8);
  border-radius:20px;overflow:hidden;position:relative;
  box-shadow:0 18px 40px rgba(18,63,168,.24);
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-90px;width:320px;height:320px;
  border-radius:50%;background:rgba(255,106,43,.22);filter:blur(10px);
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:40px;padding:46px 44px;}
.cta-copy{color:#fff;}
.cta-copy h2{color:#fff;font-size:26px;margin-bottom:12px;}
.cta-copy p{color:rgba(255,255,255,.86);font-size:15px;max-width:42ch;}
.cta-points{margin-top:20px;display:flex;flex-direction:column;gap:10px;}
.cta-points li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:rgba(255,255,255,.9);}
.cta-points i{color:#FFD5C0;margin-top:5px;font-size:13px;}
.form-card{background:#fff;border-radius:var(--r-card);padding:26px;box-shadow:0 16px 34px rgba(9,26,66,.2);}
.form-row{margin-bottom:14px;}
.form-row label{display:block;font-size:13px;color:var(--t-body);margin-bottom:6px;font-weight:500;}
.form-row input,.form-row select{
  width:100%;height:46px;padding:0 14px;border:1px solid #E1E8F2;border-radius:var(--r-btn);
  background:#fff;transition:border-color .2s ease,box-shadow .2s ease;
}
.form-row select{appearance:none;background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%235B6B84' d='M6 8 0 0h12z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:36px;}
.form-row input:focus,.form-row select:focus{border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(27,84,214,.12);outline:none;}
.form-agree{display:flex;align-items:flex-start;gap:9px;font-size:13px;color:var(--t-body);margin:6px 0 16px;}
.form-agree input{width:16px;height:16px;margin-top:4px;accent-color:var(--c-primary);}
.form-card .btn{width:100%;}
.form-note{font-size:12px;color:var(--t-weak);margin-top:12px;text-align:center;}

/* ============ 页脚 ============ */
.footer{background:#0F1B33;color:rgba(255,255,255,.72);padding:56px 0 22px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:34px;}
.flogo{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.flogo b{color:#fff;font-size:18px;font-weight:700;}
.footer p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);}
.footer h4{color:#fff;font-size:15px;margin-bottom:14px;}
.footer-list li{margin-bottom:9px;}
.footer-list a{font-size:14px;color:rgba(255,255,255,.72);}
.footer-list a:hover{color:#fff;text-decoration:underline;}
.footer-contact li{display:flex;gap:10px;font-size:14px;margin-bottom:10px;color:rgba(255,255,255,.72);}
.footer-contact i{color:#7FA4FF;margin-top:5px;font-size:13px;}
.footer-bottom{
  margin-top:36px;padding-top:18px;border-top:1px solid rgba(255,255,255,.11);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}
.to-top{
  position:fixed;right:22px;bottom:24px;width:44px;height:44px;border-radius:12px;
  background:var(--c-primary);color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 22px rgba(27,84,214,.3);opacity:0;visibility:hidden;transition:all .25s ease;z-index:70;
}
.to-top.show{opacity:1;visibility:visible;}
.to-top:hover{background:var(--c-primary-d);color:#fff;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .hero-copy{padding:38px 34px;}
  .cta-inner{padding:38px 34px;gap:30px;}
}
@media (max-width:1023px){
  .card-grid{grid-template-columns:1fr;}
  .hero-panel{grid-template-columns:1fr;}
  .hero-visual{min-height:260px;order:-1;}
  .hero-visual::after{background:linear-gradient(0deg,rgba(255,255,255,.9),rgba(255,255,255,0) 45%);}
  .cta-inner{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .section{padding:52px 0;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .brand-slogan{display:none;}
  .brand-tools .tool-link{display:none;}
  .menu-toggle{display:inline-flex;}
  .quick-links{display:none;}
  .channel-inner{min-height:52px;padding-right:8px;}
  .channels{position:relative;}
  .hero-copy{padding:28px 22px 32px;}
  .hero-lead{font-size:15px;}
  .hero-stats{grid-template-columns:1fr;gap:12px;margin-top:16px;padding:0;}
  .section{padding:44px 0;}
  .section-title h2{font-size:22px;}
  .cta-inner{padding:30px 20px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:6px;}
  .to-top{right:14px;bottom:16px;}
}
@media (max-width:480px){
  .hero-actions .btn{width:100%;}
  .hero-copy h1{font-size:26px;}
  .chip{font-size:13px;padding:8px 13px;}
}

/* roulang page: category3 */
:root{
  --c-primary:#1B54D6;
  --c-primary-d:#123FA8;
  --c-accent:#FF6A2B;
  --c-mint:#12B3A0;
  --c-bg:#F6F8FC;
  --c-surface:#FFFFFF;
  --c-line:#E6EBF3;
  --t-1:#16233A;
  --t-2:#5B6B84;
  --t-3:#93A0B4;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --sh-1:0 6px 20px rgba(15,35,74,.06);
  --sh-2:0 14px 32px rgba(15,35,74,.12);
  --ff:"PingFang SC","HarmonyOS Sans","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --num:"Inter","SFMono-Regular",Consolas,"Courier New",monospace;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--ff);
  font-size:16px;
  line-height:1.85;
  color:var(--t-1);
  background:var(--c-bg);
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-primary-d);}
a:visited{color:var(--c-primary);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:.2px;}
p{margin:0;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;border-radius:4px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}

/* ============ 顶部导航 ============ */
.site-header{position:relative;z-index:60;background:var(--c-surface);}
.brandbar{border-bottom:1px solid var(--c-line);}
.brandbar-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:76px;}
.logo{display:flex;align-items:center;gap:12px;color:var(--t-1);}
.logo:hover{color:var(--t-1);}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:11px;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-d));
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:16px;
  box-shadow:0 6px 16px rgba(27,84,214,.28);
}
.logo-text{font-size:19px;font-weight:700;letter-spacing:.3px;}
.logo-tag{
  font-size:12px;color:var(--t-2);padding-left:12px;margin-left:2px;
  border-left:1px solid var(--c-line);white-space:nowrap;
}
.brandbar-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--c-line);
  background:var(--c-surface);color:var(--t-2);cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;transition:all .2s ease;
}
.icon-btn:hover{color:var(--c-primary);border-color:#C9D8F7;background:#F2F6FF;}
.nav-toggle{display:none;}

.channelbar{
  position:sticky;top:0;z-index:55;
  background:rgba(255,255,255,.88);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--c-line);
  box-shadow:0 2px 10px rgba(15,35,74,.04);
}
.channelbar-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:60px;}
.channels{display:flex;align-items:center;gap:6px;overflow-x:auto;scrollbar-width:none;}
.channels::-webkit-scrollbar{display:none;}
.channels a{
  display:inline-block;white-space:nowrap;
  padding:8px 18px;border-radius:999px;
  font-size:15px;font-weight:600;color:var(--t-2);
  background:transparent;transition:all .2s ease;
}
.channels a:hover{background:#EEF3FF;color:var(--c-primary);}
.channels a.active{background:var(--c-primary);color:#fff;box-shadow:0 6px 16px rgba(27,84,214,.24);}
.channels a.active:hover{background:var(--c-primary-d);color:#fff;}
.quick-links{display:flex;align-items:center;gap:18px;flex:0 0 auto;}
.quick-links a{font-size:14px;color:var(--t-2);}
.quick-links a:hover{color:var(--c-primary);}

.drawer{
  display:none;border-bottom:1px solid var(--c-line);background:var(--c-surface);
  overflow:hidden;
}
.drawer.open{display:block;}
.drawer-inner{padding:16px 24px 22px;}
.drawer h4{font-size:12px;color:var(--t-3);letter-spacing:1px;margin:14px 0 8px;font-weight:600;}
.drawer h4:first-child{margin-top:0;}
.drawer a{display:block;padding:10px 12px;border-radius:10px;color:var(--t-1);font-size:15px;font-weight:500;}
.drawer a:hover{background:#F2F6FF;color:var(--c-primary);}

/* ============ 按钮 ============ */
.btn{
  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;cursor:pointer;
  border:1px solid transparent;transition:all .2s ease;white-space:nowrap;
}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:0 8px 20px rgba(255,106,43,.26);}
.btn-primary:hover{background:#ED5C1D;color:#fff;box-shadow:0 12px 26px rgba(255,106,43,.32);}
.btn-primary:active{transform:translateY(1px);}
.btn-outline{background:var(--c-surface);color:var(--c-primary);border-color:#C7D8F8;}
.btn-outline:hover{background:#F0F5FF;color:var(--c-primary-d);border-color:var(--c-primary);}
.btn-ghost{background:transparent;color:var(--c-primary);padding:0;height:auto;text-decoration:underline;text-underline-offset:4px;}
.btn-ghost:hover{color:var(--c-primary-d);}
.btn-pill{border-radius:999px;}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;box-shadow:none;}

/* ============ 面包屑 ============ */
.crumb{padding:20px 0 0;}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t-3);}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:#C7D0DE;}
.crumb a{color:var(--t-2);}
.crumb a:hover{color:var(--c-primary);}
.crumb .now{color:var(--t-1);font-weight:600;}

/* ============ Hero ============ */
.hero{padding:26px 0 0;}
.hero-card{
  position:relative;overflow:hidden;border-radius:20px;
  background:linear-gradient(115deg,#0F2B6B 0%,#1B54D6 58%,#2E6BE6 100%);
  color:#fff;box-shadow:0 20px 40px rgba(15,35,74,.16);
}
.hero-card::after{
  content:"";position:absolute;right:-90px;top:-70px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,106,43,.42),rgba(255,106,43,0) 68%);
  pointer-events:none;
}
.hero-card::before{
  content:"";position:absolute;left:-60px;bottom:-120px;width:300px;height:300px;border-radius:50%;
  border:1px dashed rgba(255,255,255,.24);pointer-events:none;
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.15fr .85fr;gap:36px;align-items:center;
  padding:48px 44px;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.6px;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);
  padding:6px 14px;border-radius:999px;color:#fff;margin-bottom:18px;
}
.hero h1{font-size:clamp(28px,3.4vw,44px);line-height:1.25;font-weight:700;}
.hero h1 em{font-style:normal;color:#FFD9C6;}
.hero-sub{margin-top:16px;font-size:16px;line-height:1.85;color:rgba(255,255,255,.86);max-width:520px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.hero-actions .btn-outline{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.5);}
.hero-actions .btn-outline:hover{background:rgba(255,255,255,.22);color:#fff;border-color:#fff;}
.hero-meta{display:flex;flex-wrap:wrap;gap:22px;margin-top:28px;font-size:13px;color:rgba(255,255,255,.78);}
.hero-meta i{color:#FFB894;margin-right:6px;}
.hero-media{position:relative;}
.hero-media img{
  width:100%;height:280px;object-fit:cover;border-radius:16px;
  border:1px solid rgba(255,255,255,.24);
}
.hero-media .float-tag{
  position:absolute;left:-14px;bottom:18px;
  background:var(--c-surface);color:var(--t-1);
  border-radius:12px;padding:10px 16px;box-shadow:var(--sh-2);
  font-size:13px;display:flex;align-items:center;gap:8px;
}
.hero-media .float-tag b{font-family:var(--num);color:var(--c-mint);font-size:16px;}

/* ============ 区块通用 ============ */
.section{padding:72px 0;}
.section.tight{padding:52px 0;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;flex-wrap:wrap;}
.sec-title{position:relative;padding-left:16px;}
.sec-title::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;
  background:var(--c-primary);
}
.sec-title .idx{
  display:block;font-family:var(--num);font-size:12px;font-weight:700;
  letter-spacing:1.4px;color:var(--c-accent);margin-bottom:4px;
}
.sec-title h2{font-size:26px;}
.sec-desc{margin-top:10px;font-size:14px;color:var(--t-2);max-width:640px;}

/* ============ 统计卡 ============ */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);}
.stat-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px 24px;box-shadow:var(--sh-1);transition:all .25s ease;
  position:relative;overflow:hidden;
}
.stat-card::after{
  content:"";position:absolute;right:-24px;bottom:-24px;width:86px;height:86px;border-radius:50%;
  background:rgba(27,84,214,.06);
}
.stat-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.stat-card .val{
  font-family:var(--num);font-size:38px;font-weight:700;line-height:1.1;color:var(--c-primary);
  display:flex;align-items:baseline;gap:6px;
}
.stat-card .val small{font-size:15px;font-weight:600;color:var(--t-2);font-family:var(--ff);}
.stat-card .lb{margin-top:8px;font-size:14px;font-weight:600;color:var(--t-1);}
.stat-card .note{margin-top:6px;font-size:13px;color:var(--t-3);line-height:1.7;}
.stat-card.accent .val{color:var(--c-accent);}
.stat-card.mint .val{color:var(--c-mint);}

/* ============ 榜单行 ============ */
.rank-panel{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
}
.rank-head{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 24px;border-bottom:1px solid var(--c-line);background:#FAFBFF;
}
.rank-head h3{font-size:19px;}
.rank-head .hint{font-size:13px;color:var(--t-3);}
.rank-legend{display:flex;gap:16px;flex-wrap:wrap;font-size:12px;color:var(--t-2);}
.rank-legend span{display:inline-flex;align-items:center;gap:6px;}
.dot{width:9px;height:9px;border-radius:50%;display:inline-block;}
.dot.blue{background:var(--c-primary);}
.dot.mint{background:var(--c-mint);}

.rank-row{
  display:grid;
  grid-template-columns:76px minmax(150px,1.3fr) minmax(120px,1fr) minmax(180px,1.7fr) 108px;
  align-items:center;gap:18px;
  padding:18px 24px;border-bottom:1px solid var(--c-line);
  position:relative;transition:background .2s ease;
}
.rank-row:last-child{border-bottom:0;}
.rank-row::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;border-radius:0 3px 3px 0;
  background:var(--c-primary);transform:scaleY(0);transition:transform .22s ease;
}
.rank-row:hover{background:#F2F6FF;}
.rank-row:hover::before{transform:scaleY(1);}
.rank-no{
  font-family:var(--num);font-size:26px;font-weight:700;color:#C3CDDC;line-height:1;
}
.rank-row.top1 .rank-no,.rank-row.top2 .rank-no,.rank-row.top3 .rank-no{color:var(--c-accent);}
.rank-name{font-size:16px;font-weight:600;color:var(--t-1);}
.rank-name span{display:block;font-size:12px;color:var(--t-3);font-weight:400;margin-top:2px;}
.tag{
  display:inline-block;font-size:12px;padding:3px 10px;border-radius:6px;font-weight:600;
  background:#EEF3FF;color:var(--c-primary-d);white-space:nowrap;
}
.tag.mint{background:#E4F7F4;color:#0B8578;}
.tag.orange{background:#FFF0E8;color:#C64A12;}
.rank-bar{display:flex;align-items:center;gap:12px;}
.bar{flex:1;height:8px;border-radius:999px;background:#E9EEF7;overflow:hidden;}
.bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--c-primary),var(--c-accent));}
.bar.mint i{background:linear-gradient(90deg,var(--c-mint),#5FD8C8);}
.bar-val{font-family:var(--num);font-size:14px;font-weight:700;color:var(--t-1);min-width:44px;text-align:right;}
.badge{
  display:inline-block;font-size:12px;font-weight:600;padding:5px 12px;border-radius:999px;
  background:#EEF3FF;color:var(--c-primary-d);text-align:center;white-space:nowrap;
}
.badge.mint{background:#E4F7F4;color:#0B8578;}
.badge.orange{background:#FFF0E8;color:#C64A12;}
.badge.gray{background:#F1F4F9;color:var(--t-2);}
.rank-foot{padding:16px 24px;background:#FAFBFF;border-top:1px solid var(--c-line);font-size:13px;color:var(--t-3);}

/* ============ 说明卡 ============ */
.explain{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--gap);}
.card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px 24px;box-shadow:var(--sh-1);transition:all .25s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.card h3{font-size:19px;margin-bottom:10px;}
.card p{font-size:14px;color:var(--t-2);line-height:1.85;}
.card .list{margin-top:16px;display:grid;gap:10px;}
.card .list li{display:flex;gap:10px;font-size:14px;color:var(--t-2);line-height:1.75;}
.card .list i{color:var(--c-mint);margin-top:7px;font-size:12px;}
.card .list b{color:var(--t-1);}

/* ============ 图文区块 ============ */
.split{
  display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:center;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:20px;
  padding:34px;box-shadow:var(--sh-1);
}
.split img{width:100%;height:300px;object-fit:cover;}
.split h3{font-size:22px;margin-bottom:12px;}
.split p{font-size:15px;color:var(--t-2);}
.mini-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:20px;}
.mini{
  border:1px solid var(--c-line);border-radius:12px;padding:14px 16px;background:#FAFBFF;
}
.mini b{display:block;font-family:var(--num);font-size:20px;color:var(--c-primary);}
.mini span{font-size:13px;color:var(--t-2);}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  margin-bottom:12px;overflow:hidden;transition:border-color .2s ease;
}
.faq-item[open]{border-color:#C7D8F8;border-left:3px solid var(--c-primary);background:#FBFCFE;}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 22px;
  font-size:16px;font-weight:600;color:var(--t-1);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .chev{color:var(--t-3);transition:transform .22s ease;font-size:13px;}
.faq-item[open] summary .chev{transform:rotate(180deg);color:var(--c-primary);}
.faq-item .ans{padding:0 22px 20px;font-size:14px;color:var(--t-2);line-height:1.9;}

/* ============ CTA 表单 ============ */
.cta{
  background:linear-gradient(120deg,#0F2B6B,#1B54D6 62%,#2B63D8);
  border-radius:20px;padding:44px;color:#fff;
  display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start;
  position:relative;overflow:hidden;
}
.cta::after{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,106,43,.4),rgba(255,106,43,0) 70%);
}
.cta > *{position:relative;z-index:2;}
.cta h2{font-size:26px;margin-bottom:14px;}
.cta p{font-size:15px;color:rgba(255,255,255,.85);max-width:420px;}
.cta .points{margin-top:22px;display:grid;gap:10px;font-size:14px;color:rgba(255,255,255,.85);}
.cta .points i{color:#8FE4DA;margin-right:8px;}
.form-card{background:var(--c-surface);border-radius:16px;padding:26px;box-shadow:var(--sh-2);color:var(--t-1);}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;font-weight:600;color:var(--t-2);margin-bottom:7px;}
.field input,.field select,.field textarea{
  width:100%;height:46px;padding:0 14px;border:1px solid #E1E8F2;border-radius:10px;
  background:#FBFCFF;transition:all .2s ease;outline:none;
}
.field textarea{height:96px;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' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%235B6B84' stroke-width='1.6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;
}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--c-primary);background:#fff;
  box-shadow:0 0 0 4px rgba(27,84,214,.12);
}
.field input.error,.field select.error{border-color:#E0463C;box-shadow:0 0 0 4px rgba(224,70,60,.12);}
.field .err{display:none;font-size:12px;color:#E0463C;margin-top:6px;}
.field.has-error .err{display:block;}
.check{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--t-2);line-height:1.7;}
.check input{width:16px;height:16px;margin-top:4px;flex:0 0 16px;accent-color:var(--c-primary);}
.form-card .btn{width:100%;margin-top:8px;}
.loading-dots i{
  display:inline-block;width:5px;height:5px;border-radius:50%;background:#fff;margin:0 2px;
  animation:pulse 1s infinite ease-in-out;
}
.loading-dots i:nth-child(2){animation-delay:.15s;}
.loading-dots i:nth-child(3){animation-delay:.3s;}
@keyframes pulse{0%,80%,100%{opacity:.3;transform:scale(.8);}40%{opacity:1;transform:scale(1);}}

/* ============ 页脚 ============ */
.footer{background:#0F1B33;color:#B9C4D6;padding:64px 0 0;margin-top:20px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px;}
.footer h4{font-size:14px;color:#fff;margin-bottom:16px;letter-spacing:.6px;}
.flogo{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.flogo b{color:#fff;font-size:17px;}
.footer-brand p{font-size:14px;line-height:1.9;color:#98A5BB;max-width:340px;}
.footer-list li{margin-bottom:10px;}
.footer-list a{font-size:14px;color:#B9C4D6;}
.footer-list a:hover{color:#fff;text-decoration:underline;}
.footer-contact li{display:flex;gap:10px;font-size:14px;margin-bottom:12px;line-height:1.75;color:#98A5BB;}
.footer-contact i{color:var(--c-accent);margin-top:6px;font-size:13px;}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0 26px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:#8390A8;
}
.to-top{
  position:fixed;right:22px;bottom:26px;z-index:70;
  width:44px;height:44px;border-radius:12px;border:1px solid var(--c-line);
  background:var(--c-surface);color:var(--c-primary);cursor:pointer;
  display:flex;align-items:center;justify-content:center;box-shadow:var(--sh-2);
  opacity:0;pointer-events:none;transition:all .25s ease;
}
.to-top.show{opacity:1;pointer-events:auto;}
.to-top:hover{background:var(--c-primary);color:#fff;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .stats{grid-template-columns:repeat(3,1fr);}
  .rank-row{grid-template-columns:64px minmax(130px,1.2fr) minmax(110px,1fr) minmax(150px,1.5fr) 96px;gap:14px;}
}
@media (max-width:1023px){
  .section{padding:56px 0;}
  .hero-inner{grid-template-columns:1fr;padding:36px 28px;}
  .hero-media img{height:240px;}
  .hero-media .float-tag{left:12px;}
  .stats{grid-template-columns:1fr 1fr;}
  .stats .stat-card:last-child{grid-column:1 / -1;}
  .explain{grid-template-columns:1fr;}
  .split{grid-template-columns:1fr;padding:26px;}
  .split img{height:240px;}
  .cta{grid-template-columns:1fr;padding:34px;}
  .rank-row{grid-template-columns:54px 1fr 96px;grid-template-areas:"no name badge" ". tag badge" ". bar bar";row-gap:8px;}
  .rank-no{grid-area:no;}
  .rank-name{grid-area:name;}
  .rank-name .tag{margin-top:6px;}
  .rank-bar{grid-area:bar;}
  .rank-row > .badge{grid-area:badge;justify-self:end;}
  .rank-row > .tag{grid-area:tag;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 18px;}
  .logo-tag{display:none;}
  .quick-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .brandbar-actions .btn{display:none;}
  .hero-card{border-radius:16px;}
  .hero-inner{padding:28px 20px;}
  .hero-media img{height:200px;}
  .hero-meta{gap:14px;font-size:12px;}
  .section{padding:44px 0;}
  .sec-head{margin-bottom:24px;}
  .sec-title h2{font-size:22px;}
  .stats{grid-template-columns:1fr;gap:16px;}
  .stats .stat-card:last-child{grid-column:auto;}
  .rank-head{padding:16px 18px;}
  .rank-row{padding:16px 18px;}
  .mini-grid{grid-template-columns:1fr;}
  .cta{padding:26px 20px;border-radius:16px;}
  .cta h2{font-size:22px;}
  .form-card{padding:20px;}
  .footer{padding:48px 0 0;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{justify-content:flex-start;}
  .channels a{padding:7px 14px;font-size:14px;}
}
@media (max-width:480px){
  .hero-actions{flex-direction:column;}
  .hero-actions .btn{width:100%;}
  .form-card .btn{width:100%;}
  .brand-mark{width:34px;height:34px;flex:0 0 34px;}
  .logo-text{font-size:17px;}
}

/* roulang page: category2 */
:root{
  --c-primary:#1B54D6;
  --c-primary-d:#123FA8;
  --c-accent:#FF6A2B;
  --c-accent-d:#E85A1C;
  --c-mint:#12B3A0;
  --c-bg:#F6F8FC;
  --c-surface:#FFFFFF;
  --c-line:#E6EBF3;
  --c-line-strong:#D9E3F5;
  --t-strong:#16233A;
  --t-body:#5B6B84;
  --t-weak:#93A0B4;
  --t-write:#FFFFFF;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-tag:6px;
  --sh-card:0 6px 20px rgba(15,35,74,.06);
  --sh-hover:0 14px 32px rgba(15,35,74,.12);
  --container:1240px;
  --mono:"Inter",ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--t-body);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
h1,h2,h3,h4{color:var(--t-strong);margin:0;line-height:1.3;font-weight:700;}
h1{font-size:clamp(28px,3.4vw,44px);line-height:1.25;}
h2{font-size:26px;}
h3{font-size:19px;font-weight:600;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-primary-d);}
a:visited{color:var(--c-primary);}
button{font:inherit;cursor:pointer;}
input,select,textarea{font:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}

.container{max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:72px 0;}
.section-sm{padding:44px 0;}
.bg-white{background:var(--c-surface);}
.bg-soft{background:var(--c-bg);}

/* ===== 头部：品牌行 ===== */
.site-header{position:relative;z-index:80;}
.brand-bar{background:var(--c-surface);border-bottom:1px solid var(--c-line);}
.brand-inner{display:flex;align-items:center;gap:18px;min-height:76px;}
.logo{display:inline-flex;align-items:center;gap:11px;font-size:20px;font-weight:700;color:var(--t-strong);letter-spacing:.2px;}
.logo:hover{color:var(--c-primary-d);}
.logo:visited{color:var(--t-strong);}
.brand-mark{
  width:36px;height:36px;border-radius:11px;
  background:var(--c-primary);color:#fff;
  display:grid;place-items:center;font-size:15px;
  box-shadow:0 6px 14px rgba(27,84,214,.28);
}
.brand-tagline{
  font-size:13px;color:var(--t-weak);
  padding-left:16px;border-left:1px solid var(--c-line);
  line-height:1.5;
}
.brand-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.search-box{position:relative;display:flex;align-items:center;}
.search-box .fa-magnifying-glass{
  position:absolute;left:14px;font-size:13px;color:var(--t-weak);
}
.search-box input{
  width:200px;height:40px;
  padding:0 14px 0 36px;
  border:1px solid var(--c-line);border-radius:999px;
  background:var(--c-bg);color:var(--t-strong);font-size:14px;
  transition:border-color .2s,box-shadow .2s,background .2s;
}
.search-box input::placeholder{color:var(--t-weak);}
.search-box input:focus{
  outline:none;background:#fff;border-color:var(--c-primary);
  box-shadow:0 0 0 4px rgba(27,84,214,.12);
}
.link-quiet{font-size:14px;color:var(--t-body);}
.link-quiet:hover{color:var(--c-primary);}
.menu-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--c-line);background:#fff;color:var(--t-strong);
  align-items:center;justify-content:center;font-size:16px;
}
.menu-toggle:hover{border-color:var(--c-primary);color:var(--c-primary);}

/* ===== 头部：频道行 ===== */
.channel-bar{
  position:sticky;top:0;z-index:70;
  background:rgba(255,255,255,.93);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease;
}
.channel-bar.is-stuck{box-shadow:0 6px 18px rgba(15,35,74,.07);}
.channel-inner{display:flex;align-items:center;gap:16px;}
.channel-nav{
  display:flex;align-items:center;gap:8px;
  padding:10px 0;overflow-x:auto;scrollbar-width:none;
  -ms-overflow-style:none;
}
.channel-nav::-webkit-scrollbar{display:none;}
.channel-nav a{
  flex:0 0 auto;
  padding:8px 18px;border-radius:999px;
  font-size:15px;color:var(--t-body);background:transparent;
  transition:background .2s,color .2s;
}
.channel-nav a:hover{background:#EEF3FE;color:var(--c-primary);}
.channel-nav a.active,
.channel-nav a.active:visited{background:var(--c-primary);color:#fff;font-weight:600;}
.channel-hint{margin-left:auto;font-size:13px;color:var(--t-weak);white-space:nowrap;}

/* ===== 移动抽屉 ===== */
.drawer{
  display:none;
  border-bottom:1px solid var(--c-line);
  background:#fff;
  max-height:0;overflow:hidden;
  transition:max-height .2s ease;
}
.drawer.open{max-height:640px;}
.drawer-inner{padding:18px 24px 26px;}
.drawer-group + .drawer-group{margin-top:20px;}
.drawer-group h4{font-size:13px;color:var(--t-weak);font-weight:600;letter-spacing:.6px;margin-bottom:10px;}
.drawer-group a{
  display:block;padding:10px 12px;border-radius:10px;
  font-size:15px;color:var(--t-strong);
}
.drawer-group a:hover{background:#EEF3FE;color:var(--c-primary);}
.drawer-group a.active{background:var(--c-primary);color:#fff;}

/* ===== 按钮 ===== */
.btn{
  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;border:1px solid transparent;
  transition:background .2s,color .2s,box-shadow .2s,transform .12s,border-color .2s;
  white-space:nowrap;
}
.btn:focus-visible{outline:none;box-shadow:0 0 0 4px rgba(27,84,214,.22);}
.btn-primary{background:var(--c-accent);color:#fff;}
.btn-primary:visited{color:#fff;}
.btn-primary:hover{background:var(--c-accent-d);color:#fff;box-shadow:0 10px 22px rgba(255,106,43,.28);}
.btn-primary:active{transform:translateY(1px);}
.btn-outline{background:#fff;border-color:var(--c-primary);color:var(--c-primary);}
.btn-outline:visited{color:var(--c-primary);}
.btn-outline:hover{background:rgba(27,84,214,.06);color:var(--c-primary-d);border-color:var(--c-primary-d);}
.btn-outline:active{transform:translateY(1px);}
.btn-ghost{
  background:transparent;color:var(--c-primary);height:auto;padding:2px 0;
  border-bottom:1px solid rgba(27,84,214,.35);border-radius:0;
}
.btn-ghost:hover{color:var(--c-primary-d);border-bottom-color:var(--c-primary-d);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}

/* ===== 面包屑 ===== */
.crumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:rgba(255,255,255,.78);
}
.crumb a{color:rgba(255,255,255,.95);}
.crumb a:hover{color:#fff;text-decoration:underline;}
.crumb .sep{opacity:.6;}

/* ===== 内页 Hero ===== */
.page-hero{
  position:relative;color:#fff;overflow:hidden;
  background-image:linear-gradient(112deg,rgba(12,28,66,.92) 0%,rgba(18,63,168,.74) 52%,rgba(18,63,168,.42) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
}
.page-hero::after{
  content:"";position:absolute;right:-90px;top:-70px;
  width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle at center,rgba(255,106,43,.22),rgba(255,106,43,0) 68%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;padding:44px 0 62px;}
.hero-title{margin-top:22px;color:#fff;max-width:900px;}
.hero-sub{
  margin-top:18px;max-width:760px;font-size:17px;
  color:rgba(255,255,255,.86);line-height:1.9;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;
}
.hero-pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:999px;
  background:rgba(255,255,255,.13);
  border:1px solid rgba(255,255,255,.24);
  font-size:13px;color:#fff;
}
.hero-pill i{color:#FFD2BC;}

/* ===== 板块标题 ===== */
.sec-head{display:flex;align-items:flex-start;gap:14px;margin-bottom:32px;}
.sec-num{
  flex:0 0 auto;font-family:var(--mono);font-size:13px;font-weight:700;
  color:var(--c-primary);background:#EAF0FE;border-radius:var(--r-tag);
  padding:2px 9px;margin-top:5px;letter-spacing:.5px;
}
.sec-head-text h2{position:relative;padding-left:14px;}
.sec-head-text h2::before{
  content:"";position:absolute;left:0;top:8px;bottom:6px;
  width:4px;border-radius:2px;background:var(--c-primary);
}
.sec-head-text p{margin-top:8px;font-size:15px;color:var(--t-body);max-width:760px;}

/* ===== 时间轴 ===== */
.timeline{display:flex;flex-direction:column;gap:28px;}
.tl-item{position:relative;display:grid;grid-template-columns:216px 1fr;gap:24px;}
.tl-item::before{
  content:"";position:absolute;left:19px;top:48px;bottom:-30px;
  border-left:2px dashed var(--c-line-strong);
}
.tl-item:last-child::before{display:none;}
.tl-axis{display:flex;align-items:flex-start;gap:12px;padding-top:2px;}
.tl-dot{
  flex:0 0 40px;width:40px;height:40px;border-radius:50%;
  background:#fff;border:2px solid var(--c-primary);color:var(--c-primary);
  display:grid;place-items:center;
  font-family:var(--mono);font-size:14px;font-weight:700;
  transition:background .2s,color .2s,box-shadow .2s;
}
.tl-item:hover .tl-dot{background:var(--c-primary);color:#fff;box-shadow:0 0 0 6px rgba(27,84,214,.10);}
.tl-label{font-size:15px;font-weight:600;color:var(--t-strong);padding-top:8px;line-height:1.4;}
.tl-card{
  background:var(--c-surface);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-card);
  transition:transform .25s ease,box-shadow .25s ease;
}
.tl-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.tl-card h3{margin-bottom:10px;}
.tl-card p{font-size:15px;line-height:1.85;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.tag{
  font-size:12px;border-radius:var(--r-tag);
  padding:3px 10px;background:#EAF0FE;color:var(--c-primary-d);
}
.tag-mint{background:#E3F7F3;color:#0C8578;}
.tag-accent{background:#FFF0E8;color:#C74E14;}

/* ===== 横滑卡片 ===== */
.slider{
  display:flex;gap:20px;overflow-x:auto;
  padding:4px 4px 18px;
  scroll-snap-type:x mandatory;
  scrollbar-width:none;-ms-overflow-style:none;
}
.slider::-webkit-scrollbar{display:none;}
.slide-card{
  flex:0 0 288px;scroll-snap-align:start;
  background:var(--c-surface);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-card);
  transition:transform .25s ease,box-shadow .25s ease;
}
.slide-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.slide-media{overflow:hidden;background:#EAF0FE;}
.slide-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .3s ease;}
.slide-card:hover .slide-media img{transform:scale(1.03);}
.slide-body{padding:20px;}
.slide-body h3{font-size:17px;margin-bottom:8px;}
.slide-body p{font-size:14px;line-height:1.8;color:var(--t-body);}
.slide-foot{display:flex;align-items:center;justify-content:space-between;margin-top:14px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;padding:3px 10px;border-radius:var(--r-tag);
  background:#EAF0FE;color:var(--c-primary-d);font-weight:600;
}
.badge-mint{background:#E3F7F3;color:#0C8578;}
.badge-accent{background:#FFF0E8;color:#C74E14;}
.badge-blue{background:#EAF0FE;color:var(--c-primary-d);}

/* ===== 相关频道 ===== */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.related-card{
  display:block;background:var(--c-surface);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-card);border:1px solid var(--c-line);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.related-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:#D5E2FB;color:inherit;}
.related-card .rc-top{display:flex;align-items:center;gap:10px;margin-bottom:12px;}
.rc-icon{
  width:38px;height:38px;border-radius:11px;
  display:grid;place-items:center;font-size:15px;
  background:#EAF0FE;color:var(--c-primary);
}
.rc-icon.mint{background:#E3F7F3;color:#0C8578;}
.rc-icon.accent{background:#FFF0E8;color:#C74E14;}
.related-card h3{font-size:17px;color:var(--t-strong);}
.related-card p{font-size:14px;margin-top:8px;}
.rc-more{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:14px;color:var(--c-primary);font-weight:600;}
.related-card:hover .rc-more{color:var(--c-primary-d);}

/* ===== FAQ ===== */
.faq-wrap{max-width:860px;}
.faq-item{
  background:var(--c-surface);border-radius:var(--r-card);
  box-shadow:var(--sh-card);margin-bottom:12px;
  border-left:3px solid transparent;overflow:hidden;
  transition:border-color .2s ease,background .2s ease;
}
.faq-item[open]{border-left-color:var(--c-primary);background:#FBFCFF;}
.faq-item summary{
  list-style:none;cursor:pointer;
  padding:18px 22px;font-size:16px;font-weight:600;color:var(--t-strong);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--c-primary);}
.faq-item summary .faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  background:#EAF0FE;color:var(--c-primary);
  display:grid;place-items:center;font-size:12px;
  transition:transform .2s ease,background .2s ease,color .2s ease;
}
.faq-item[open] summary .faq-icon{transform:rotate(180deg);background:var(--c-primary);color:#fff;}
.faq-body{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--t-body);}

/* ===== CTA ===== */
.cta-block{
  background:linear-gradient(120deg,#0F2B6E 0%,#1B54D6 100%);
  border-radius:18px;padding:44px;color:#fff;
  display:grid;grid-template-columns:1.2fr 1fr;gap:36px;align-items:center;
  box-shadow:0 18px 40px rgba(15,35,74,.18);
}
.cta-block h2{color:#fff;}
.cta-block p{color:rgba(255,255,255,.84);margin-top:12px;font-size:15px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:24px;}
.cta-panel{
  background:rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.20);
  border-radius:var(--r-card);padding:22px;
}
.cta-panel .cp-row{
  display:flex;align-items:center;gap:12px;
  padding:12px 0;font-size:14px;color:#fff;
  border-bottom:1px dashed rgba(255,255,255,.20);
}
.cta-panel .cp-row:last-child{border-bottom:none;}
.cta-panel .cp-row i{color:#FFD2BC;width:18px;text-align:center;}

/* ===== 页脚 ===== */
.footer{background:#0F1B33;color:#A9B6CC;padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;}
.flogo{display:flex;align-items:center;gap:11px;font-size:18px;color:#fff;margin-bottom:16px;}
.flogo .brand-mark{width:34px;height:34px;border-radius:10px;background:var(--c-primary);}
.footer-brand p{font-size:14px;line-height:1.9;color:#93A3BC;}
.footer h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600;}
.footer-list li{margin-bottom:10px;}
.footer-list a{color:#A9B6CC;font-size:14px;}
.footer-list a:hover{color:#fff;text-decoration:underline;}
.footer-contact li{display:flex;gap:10px;font-size:14px;margin-bottom:12px;line-height:1.7;}
.footer-contact i{color:#5C8BFF;margin-top:5px;}
.footer-bottom{
  margin-top:44px;padding:20px 0;border-top:1px solid rgba(255,255,255,.10);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:#7C8CA6;
}

/* ===== 响应式 ===== */
@media (max-width:1279px){
  .related-grid{grid-template-columns:repeat(3,1fr);}
}
@media (max-width:1023px){
  .section{padding:56px 0;}
  .brand-tagline{display:none;}
  .search-box{display:none;}
  .related-grid{grid-template-columns:1fr 1fr;}
  .cta-block{grid-template-columns:1fr;padding:34px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .section{padding:44px 0;}
  .section-sm{padding:32px 0;}
  .brand-inner{min-height:64px;gap:12px;}
  .logo{font-size:17px;}
  .brand-mark{width:32px;height:32px;border-radius:9px;font-size:13px;}
  .link-quiet{display:none;}
  .menu-toggle{display:inline-flex;}
  .drawer{display:block;}
  .channel-hint{display:none;}
  .channel-nav a{padding:7px 14px;font-size:14px;}
  .hero-inner{padding:30px 0 46px;}
  .hero-sub{font-size:15px;}
  .hero-actions .btn{flex:1 1 100%;}
  .sec-head{flex-direction:column;gap:10px;}
  .sec-num{margin-top:0;}
  h2{font-size:22px;}
  .timeline{gap:22px;}
  .tl-item{grid-template-columns:1fr;gap:10px;padding-left:20px;}
  .tl-item::before{left:5px;top:40px;bottom:-24px;}
  .tl-dot{flex:0 0 32px;width:32px;height:32px;font-size:12px;}
  .tl-label{padding-top:6px;font-size:14px;}
  .tl-card{padding:18px;}
  .related-grid{grid-template-columns:1fr;}
  .cta-block{padding:26px 20px;border-radius:14px;}
  .cta-actions .btn{flex:1 1 100%;}
  .footer{padding:46px 0 0;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;gap:6px;}
}
@media (max-width:480px){
  .btn{width:100%;}
  .btn-sm{width:auto;}
  .slide-card{flex:0 0 82%;}
  .hero-pill{font-size:12px;padding:6px 12px;}
}

/* roulang page: category4 */
:root{
  --c-primary:#1B54D6;
  --c-primary-d:#123FA8;
  --c-primary-t:rgba(27,84,214,.10);
  --c-accent:#FF6A2B;
  --c-accent-d:#E85A1D;
  --c-mint:#12B3A0;
  --c-bg:#F6F8FC;
  --c-surface:#FFFFFF;
  --c-line:#E6EBF3;
  --c-soft:#F2F6FF;
  --t-1:#16233A;
  --t-2:#5B6B84;
  --t-3:#93A0B4;
  --c-dark:#0F1B33;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 6px 20px rgba(15,35,74,.06);
  --sh-2:0 14px 32px rgba(15,35,74,.12);
  --mono:"Inter","SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  --sans:"PingFang SC","HarmonyOS Sans","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:var(--sans);font-size:16px;line-height:1.85;color:var(--t-1);background:var(--c-bg);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block;height:auto}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease}
a:visited{color:var(--c-primary)}
a:hover{color:var(--c-primary-d)}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;color:var(--t-1)}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.container{max-width:1240px;margin:0 auto;padding:0 24px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:0 24px;height:46px;border-radius:var(--r-btn);font-size:15px;font-weight:600;transition:background .2s ease,color .2s ease,box-shadow .2s ease,transform .15s ease}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:0 8px 18px rgba(255,106,43,.26)}
.btn-primary:hover{background:var(--c-accent-d);color:#fff}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{background:#fff;color:var(--c-primary);border:1px solid var(--c-primary)}
.btn-outline:hover{background:rgba(27,84,214,.06);color:var(--c-primary-d)}
.btn-ghost{background:transparent;color:var(--c-primary);padding:0 6px;height:auto;border-radius:0;border-bottom:1px solid rgba(27,84,214,.4)}
.btn-ghost:hover{color:var(--c-primary-d);border-bottom-color:var(--c-primary-d)}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:8px}
.btn-pill{border-radius:999px}

/* ---------- tags ---------- */
.tag{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:6px;font-size:12px;font-weight:600;line-height:1.6}
.tag-primary{background:rgba(27,84,214,.10);color:var(--c-primary-d)}
.tag-mint{background:rgba(18,179,160,.12);color:#0B8C7D}
.tag-accent{background:rgba(255,106,43,.12);color:#C94E15}

/* ---------- top brand bar ---------- */
.topbar{background:#fff;border-bottom:1px solid var(--c-line)}
.brand-inner{display:flex;align-items:center;gap:20px;min-height:74px;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo a{display:flex;align-items:center;gap:10px;color:var(--t-1)}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:11px;background:linear-gradient(135deg,var(--c-primary),#3D77F0);color:#fff;font-size:17px;box-shadow:0 8px 16px rgba(27,84,214,.25)}
.logo b{font-size:19px;font-weight:800;letter-spacing:.2px;white-space:nowrap}
.slogan{font-size:13px;color:var(--t-2);padding-left:14px;border-left:1px solid var(--c-line);white-space:nowrap}
.topbar-tools{margin-left:auto;display:flex;align-items:center;gap:14px}
.search-box{position:relative;display:flex;align-items:center}
.search-box i{position:absolute;left:13px;color:var(--t-3);font-size:13px}
.search-box input{width:190px;height:42px;border:1px solid #E1E8F2;border-radius:var(--r-btn);padding:0 12px 0 34px;background:#FBFCFE;transition:border-color .2s ease,box-shadow .2s ease,background .2s ease}
.search-box input::placeholder{color:var(--t-3)}
.search-box input:focus{outline:none;background:#fff;border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(27,84,214,.12)}
.tool-link{font-size:14px;color:var(--t-2);display:inline-flex;align-items:center;gap:6px}
.tool-link:hover{color:var(--c-primary)}

/* ---------- channel bar (sticky) ---------- */
.channelbar{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);backdrop-filter:saturate(160%) blur(8px);border-bottom:1px solid var(--c-line);box-shadow:0 4px 14px rgba(15,35,74,.05)}
.channel-inner{display:flex;align-items:center;gap:18px;min-height:58px}
.channel-nav{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.channel-nav::-webkit-scrollbar{display:none}
.channel-nav a{padding:8px 16px;border-radius:999px;font-size:15px;font-weight:600;color:var(--t-2);white-space:nowrap;transition:background .2s ease,color .2s ease}
.channel-nav a:hover{background:var(--c-soft);color:var(--c-primary-d)}
.channel-nav a.is-active{background:var(--c-primary);color:#fff;box-shadow:0 6px 14px rgba(27,84,214,.24)}
.quick-links{margin-left:auto;display:flex;align-items:center;gap:18px}
.quick-links a{font-size:14px;color:var(--t-2)}
.quick-links a:hover{color:var(--c-primary)}
.menu-toggle{display:none;margin-left:auto;width:42px;height:42px;border-radius:10px;border:1px solid var(--c-line);color:var(--t-1);font-size:16px;align-items:center;justify-content:center;background:#fff}
.menu-toggle:hover{background:var(--c-soft);color:var(--c-primary)}

/* ---------- drawer ---------- */
.drawer{position:fixed;inset:0 0 0 auto;width:min(86vw,340px);background:#fff;z-index:120;transform:translateX(102%);transition:transform .2s ease;box-shadow:-10px 0 30px rgba(15,35,74,.14);padding:20px;overflow-y:auto}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.drawer-head b{font-size:16px}
.drawer-close{width:36px;height:36px;border-radius:9px;background:var(--c-soft);color:var(--t-2)}
.drawer-group{margin-bottom:22px}
.drawer-group h4{font-size:13px;color:var(--t-3);font-weight:700;letter-spacing:.6px;margin-bottom:10px}
.drawer-group a{display:block;padding:11px 12px;border-radius:10px;font-size:15px;color:var(--t-1);font-weight:600}
.drawer-group a:hover{background:var(--c-soft);color:var(--c-primary)}
.drawer-group a.is-active{background:var(--c-primary);color:#fff}
.drawer-mask{position:fixed;inset:0;background:rgba(15,27,51,.42);opacity:0;visibility:hidden;transition:opacity .2s ease;z-index:110}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ---------- page hero ---------- */
.page-hero{position:relative;background:var(--c-dark) url("/assets/images/backpic/back-2.webp") center/cover no-repeat;color:#fff;padding:56px 0 68px;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(15,27,51,.92) 0%,rgba(18,63,168,.82) 58%,rgba(27,84,214,.62) 100%)}
.page-hero::after{content:"";position:absolute;right:-90px;top:-70px;width:340px;height:340px;border-radius:50%;border:1px solid rgba(255,255,255,.16)}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.78);margin-bottom:18px;flex-wrap:wrap}
.breadcrumb a{color:rgba(255,255,255,.85)}
.breadcrumb a:hover{color:#fff;text-decoration:underline}
.breadcrumb span{opacity:.5}
.breadcrumb em{font-style:normal;color:#fff}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:5px 12px;border-radius:999px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22);font-size:12px;font-weight:600;color:#fff;letter-spacing:.4px}
.page-hero h1{margin:18px 0 14px;font-size:clamp(28px,3.4vw,44px);font-weight:700;line-height:1.25;color:#fff}
.hero-lead{max-width:760px;font-size:16px;color:rgba(255,255,255,.86);line-height:1.9}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.page-hero .btn-outline{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.6);color:#fff}
.page-hero .btn-outline:hover{background:rgba(255,255,255,.2);color:#fff}

/* ---------- info strip ---------- */
.info-strip{background:#fff;border-bottom:1px solid var(--c-line)}
.info-grid{display:grid;grid-template-columns:repeat(3,1fr)}
.info-cell{padding:24px 26px;border-right:1px solid var(--c-line);display:flex;gap:14px;align-items:flex-start}
.info-cell:last-child{border-right:0}
.info-cell i{font-size:16px;color:var(--c-primary);margin-top:5px}
.info-cell b{display:block;font-size:15px;font-weight:700}
.info-cell span{font-size:13.5px;color:var(--t-2);line-height:1.75}

/* ---------- support layout ---------- */
.section{padding:64px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap}
.section-head h2{font-size:26px;display:flex;align-items:center;gap:12px}
.section-head h2::before{content:"";width:4px;height:24px;border-radius:2px;background:var(--c-primary-d)}
.section-head p{font-size:14px;color:var(--t-2);max-width:620px;margin-top:8px}
.idx{font-family:var(--mono);font-size:13px;font-weight:700;color:var(--c-primary);letter-spacing:1px}

.support-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:34px;align-items:start}
.toc{position:sticky;top:88px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:18px}
.toc h3{font-size:13px;letter-spacing:.6px;color:var(--t-3);font-weight:700;margin-bottom:10px}
.toc ol{counter-reset:toc;display:flex;flex-direction:column;gap:2px}
.toc a{display:flex;align-items:center;gap:10px;padding:9px 10px 9px 12px;border-radius:9px;font-size:14.5px;font-weight:600;color:var(--t-2);position:relative;transition:background .2s ease,color .2s ease}
.toc a::before{counter-increment:toc;content:counter(toc,decimal-leading-zero);font-family:var(--mono);font-size:12px;color:var(--t-3)}
.toc a:hover{background:var(--c-soft);color:var(--c-primary-d)}
.toc a.is-active{background:var(--c-soft);color:var(--c-primary-d)}
.toc a.is-active::after{content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;border-radius:2px;background:var(--c-primary)}
.toc-note{margin-top:16px;padding-top:16px;border-top:1px dashed var(--c-line);font-size:13px;color:var(--t-2);line-height:1.8}

.qa-group{margin-bottom:44px;scroll-margin-top:96px}
.qa-group-head{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.qa-group-head h2{font-size:21px}
.qa-group-head .idx{padding:3px 8px;background:var(--c-soft);border-radius:6px}
.qa-group-intro{font-size:14.5px;color:var(--t-2);margin:-6px 0 16px}

.qa{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;margin-bottom:12px;transition:box-shadow .2s ease,border-color .2s ease}
.qa:hover{box-shadow:var(--sh-2);border-color:#D8E2F5}
.qa>summary{position:relative;display:flex;align-items:center;gap:12px;padding:18px 22px;font-size:16.5px;font-weight:600;color:var(--t-1);cursor:pointer;list-style:none;transition:background .2s ease}
.qa>summary::-webkit-details-marker{display:none}
.qa>summary::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--c-primary);opacity:0;transition:opacity .2s ease}
.qa>summary::after{content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;font-size:12px;color:var(--t-3);margin-left:auto;transition:transform .25s ease}
.qa[open]>summary{background:var(--c-soft)}
.qa[open]>summary::before{opacity:1}
.qa[open]>summary::after{transform:rotate(180deg)}
.qa-body{padding:16px 22px 20px;border-top:1px solid var(--c-line);font-size:15px;color:var(--t-2);line-height:1.9}
.qa-body ul{margin-top:10px;display:flex;flex-direction:column;gap:8px}
.qa-body li{position:relative;padding-left:18px}
.qa-body li::before{content:"";position:absolute;left:0;top:12px;width:6px;height:6px;border-radius:50%;background:var(--c-mint)}
.qa-body strong{color:var(--t-1)}

/* ---------- contact card ---------- */
.contact-card{margin-top:8px;background:#fff;border:1px solid var(--c-line);border-radius:18px;box-shadow:var(--sh-1);overflow:hidden;display:grid;grid-template-columns:300px minmax(0,1fr);scroll-margin-top:96px}
.contact-media{position:relative;background:var(--c-soft);min-height:220px}
.contact-media img{width:100%;height:100%;object-fit:cover}
.contact-body{padding:30px 32px}
.contact-body h2{font-size:22px;margin-bottom:10px}
.contact-body p{font-size:15px;color:var(--t-2)}
.contact-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.contact-meta{display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:22px;padding-top:18px;border-top:1px dashed var(--c-line);font-size:14px;color:var(--t-2)}
.contact-meta span{display:inline-flex;align-items:center;gap:8px}
.contact-meta i{color:var(--c-primary)}

/* ---------- related channels ---------- */
.related{padding:56px 0 72px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.related-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:22px;display:flex;flex-direction:column;gap:10px;transition:transform .25s ease,box-shadow .25s ease}
.related-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.related-card h3{font-size:18px}
.related-card p{font-size:14px;color:var(--t-2)}
.related-card span{font-size:13.5px;font-weight:600;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px;margin-top:auto}

/* ---------- footer ---------- */
.footer{background:var(--c-dark);color:rgba(255,255,255,.74);padding:60px 0 26px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:34px}
.flogo{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.flogo b{color:#fff;font-size:17px;font-weight:800}
.footer p{font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.66)}
.footer h4{color:#fff;font-size:15px;margin-bottom:14px}
.footer-list li{margin-bottom:10px}
.footer-list a{color:rgba(255,255,255,.72);font-size:14px}
.footer-list a:hover{color:#fff;text-decoration:underline}
.footer-contact li{display:flex;gap:10px;margin-bottom:12px;font-size:13.5px;color:rgba(255,255,255,.7);line-height:1.75}
.footer-contact i{color:var(--c-accent);margin-top:6px;font-size:12px}
.footer-bottom{margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.58)}

.to-top{position:fixed;right:22px;bottom:26px;width:46px;height:46px;border-radius:50%;background:#fff;color:var(--c-primary);border:1px solid var(--c-line);box-shadow:var(--sh-2);display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transform:translateY(8px);transition:all .25s ease;z-index:80}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--c-primary);color:#fff;border-color:var(--c-primary)}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .related-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:1023px){
  .support-layout{grid-template-columns:1fr}
  .toc{position:static;display:flex;gap:14px;align-items:flex-start;overflow-x:auto}
  .toc .toc-list-wrap{display:flex;gap:8px}
  .toc ol{flex-direction:row;gap:8px}
  .toc a{white-space:nowrap;background:var(--c-soft)}
  .toc a::before{display:none}
  .toc-note{display:none}
  .contact-card{grid-template-columns:1fr}
  .contact-media{min-height:180px}
  .related-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .info-grid{grid-template-columns:1fr}
  .info-cell{border-right:0;border-bottom:1px solid var(--c-line)}
  .info-cell:last-child{border-bottom:0}
  .slogan{display:none}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:44px 0}
  .channel-nav,.quick-links{display:none}
  .menu-toggle{display:flex}
  .search-box input{width:100%}
  .topbar-tools{width:100%;margin-left:0}
  .brand-inner{padding:14px 0;gap:14px}
  .page-hero{padding:40px 0 48px}
  .hero-lead{font-size:15px}
  .hero-actions .btn{flex:1 1 100%}
  .contact-body{padding:24px 20px}
  .contact-actions .btn{width:100%}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .qa>summary{font-size:15.5px;padding:16px 18px}
  .qa-body{padding:14px 18px 18px}
  .section-head h2{font-size:22px}
}
@media (max-width:480px){
  .logo b{font-size:17px}
  .info-cell{padding:18px}
  .contact-body h2{font-size:20px}
}