/* roulang page: index */
:root{
  --blue:#3D6DF2;
  --blue-dark:#2148B8;
  --mint:#2EC4B6;
  --coral:#FF6B57;
  --bg:#F7FAFF;
  --bg-soft:#EEF4FF;
  --card:#FFFFFF;
  --text:#0F1F3D;
  --muted:#5B6B82;
  --border:#DCE6F5;
  --r-lg:18px;
  --r-md:12px;
  --r-sm:10px;
  --shadow:0 10px 30px rgba(31,60,120,.08);
  --shadow-hover:0 16px 40px rgba(31,60,120,.12);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body.site-body{
  margin:0;
  padding:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  color:var(--text);
  background:var(--bg);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;border:0;}
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;}
.container{width:100%;max-width:1220px;margin:0 auto;padding:0 24px;}
.section{padding:80px 0;position:relative;}
.section-white{background:#FFFFFF;}
.section-soft{background:var(--bg-soft);}
.section-head{max-width:780px;margin-bottom:40px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.4px;color:var(--blue);background:var(--bg-soft);border:1px solid #D9E5FF;padding:6px 14px;border-radius:999px;margin-bottom:16px;}
.section-white .eyebrow{background:#F1F6FF;}
.section-title{font-size:32px;line-height:1.3;font-weight:700;letter-spacing:-.3px;margin-bottom:14px;}
.section-desc{color:var(--muted);font-size:16px;line-height:1.85;}
.muted{color:var(--muted);}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-md);padding:13px 26px;font-size:15px;font-weight:600;line-height:1.2;border:1px solid transparent;cursor:pointer;transition:background .22s ease,color .22s ease,transform .18s ease,box-shadow .22s ease,border-color .22s ease;}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 8px 20px rgba(61,109,242,.24);}
.btn-primary:hover{background:var(--blue-dark);transform:translateY(-2px);box-shadow:0 12px 26px rgba(33,72,184,.28);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--blue);border-color:#B9CDF7;}
.btn-ghost:hover{background:var(--bg-soft);border-color:var(--blue);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-coral{background:var(--coral);color:#fff;box-shadow:0 8px 20px rgba(255,107,87,.26);}
.btn-coral:hover{background:#E8553F;transform:translateY(-2px);}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:var(--r-sm);}
.btn-lg{padding:15px 32px;font-size:16px;}
.btn:focus-visible{outline:3px solid rgba(61,109,242,.25);outline-offset:2px;}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--border);box-shadow:0 4px 18px rgba(31,60,120,.05);}
.nav-wrap{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:18px;min-height:80px;}
.nav-side{display:flex;align-items:center;gap:22px;}
.nav-right{justify-content:flex-end;}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--text);padding:6px 2px;transition:color .2s ease;}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;background:var(--blue);transform:scaleX(0);transform-origin:center;transition:transform .22s ease;}
.nav-link:hover{color:var(--blue);}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1);}
.nav-link.active{color:var(--blue);font-weight:600;}
.brand{display:inline-flex;align-items:center;gap:9px;justify-self:center;font-size:16px;font-weight:800;letter-spacing:-.2px;color:var(--text);transition:color .2s ease;white-space:nowrap;}
.brand:hover{color:var(--blue-dark);}
.brand:focus-visible{outline:3px solid rgba(61,109,242,.25);outline-offset:4px;border-radius:8px;}
.badge-18{display:inline-flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;letter-spacing:.5px;color:#C33A26;background:#FFE9E5;border:1px solid #FFC9C0;border-radius:999px;padding:2px 8px;line-height:1.5;}
.badge-18-mobile{display:none;}
.nav-burger{display:none;flex-direction:column;justify-content:center;gap:5px;width:42px;height:42px;border:1px solid var(--border);background:#fff;border-radius:10px;cursor:pointer;padding:0 10px;transition:border-color .2s ease,box-shadow .2s ease;}
.nav-burger span{display:block;height:2px;width:100%;background:var(--text);border-radius:2px;transition:transform .22s ease,opacity .22s ease;}
.nav-burger:hover{border-color:var(--blue);}
.nav-burger:focus-visible{outline:3px solid rgba(61,109,242,.25);outline-offset:2px;}
.mobile-menu{display:none;border-top:1px solid var(--border);background:#fff;padding:10px 24px 22px;}
.mobile-menu.open{display:block;}
.mobile-menu a{display:block;padding:15px 4px;font-size:16px;font-weight:600;color:var(--text);border-bottom:1px solid #EEF3FB;transition:color .2s ease,padding-left .2s ease;}
.mobile-menu a:hover{color:var(--blue);padding-left:10px;}
.mobile-menu .mobile-cta{margin-top:18px;border-bottom:0;text-align:center;background:var(--blue);color:#fff;border-radius:var(--r-md);padding:14px;}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:72px 0 88px;background:linear-gradient(180deg,#EFF6FF 0%,#F7FAFF 78%);}
.hero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(#C3D7F6 1.1px,transparent 1.1px);background-size:26px 26px;opacity:.55;-webkit-mask-image:linear-gradient(180deg,#000 0%,rgba(0,0,0,.15) 78%,transparent 100%);mask-image:linear-gradient(180deg,#000 0%,rgba(0,0,0,.15) 78%,transparent 100%);pointer-events:none;}
.hero-inner{position:relative;display:grid;grid-template-columns:1.2fr 1fr;gap:56px;align-items:center;}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px;}
.chip{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:500;color:#2A4370;background:#fff;border:1px solid var(--border);border-radius:999px;padding:5px 13px;transition:border-color .2s ease,color .2s ease,box-shadow .2s ease;}
.chip:hover{border-color:#9FBCF4;color:var(--blue);box-shadow:0 6px 14px rgba(61,109,242,.12);}
.chip .dot{width:6px;height:6px;border-radius:50%;background:var(--mint);}
.hero h1{font-size:clamp(30px,3.6vw,50px);font-weight:800;line-height:1.16;letter-spacing:-.6px;margin-bottom:20px;}
.hero h1 .hl{color:var(--blue);}
.hero-lede{font-size:16.5px;line-height:1.9;color:#41547A;max-width:640px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 26px;}
.hero-point{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:#3B4E72;}
.hero-point i{width:20px;height:20px;border-radius:50%;background:#E3EEFF;color:var(--blue);display:inline-flex;align-items:center;justify-content:center;font-style:normal;font-size:11px;font-weight:700;}
.hero-map{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow);border:1px solid #E1EBFA;background:#DCE8FF;aspect-ratio:4/3.6;}
.hero-map img{width:100%;height:100%;object-fit:cover;}
.hero-map::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(15,31,61,.05) 0%,rgba(15,31,61,.42) 100%);}
.map-caption{position:absolute;left:18px;bottom:18px;z-index:2;color:#fff;font-size:13px;font-weight:600;letter-spacing:.3px;text-shadow:0 2px 8px rgba(0,0,0,.35);}
.float-card{position:absolute;z-index:3;display:flex;align-items:center;gap:10px;background:#fff;border-radius:14px;padding:12px 16px;box-shadow:0 14px 30px rgba(20,45,95,.18);border:1px solid #E7EFFB;}
.float-card strong{display:block;font-size:18px;font-weight:800;color:var(--text);line-height:1.2;}
.float-card span{display:block;font-size:12px;color:var(--muted);line-height:1.4;}
.float-card .fc-dot{width:9px;height:9px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 4px rgba(46,196,182,.16);}
.float-a{top:20px;left:20px;}
.float-b{bottom:26px;right:18px;}

/* ---------- 指标看板 ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:18px;}
.stat-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);padding:24px 20px;box-shadow:var(--shadow);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;}
.stat-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#BFD4F8;}
.stat-icon{width:38px;height:38px;border-radius:11px;background:var(--bg-soft);color:var(--blue);display:flex;align-items:center;justify-content:center;font-size:17px;margin-bottom:14px;}
.stat-num{font-size:28px;font-weight:800;letter-spacing:-.5px;line-height:1.2;}
.stat-num small{font-size:14px;font-weight:600;color:var(--muted);margin-left:3px;}
.stat-label{font-size:13.5px;color:var(--muted);margin-top:6px;line-height:1.5;}
.stat-trend{display:inline-flex;align-items:center;gap:4px;margin-top:10px;font-size:12px;font-weight:600;color:#1E9C8E;background:#E7F9F6;border-radius:999px;padding:2px 9px;}

/* ---------- Bento 入口矩阵 ---------- */
.bento{display:grid;grid-template-columns:repeat(12,1fr);gap:20px;}
.bento-card{position:relative;background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);padding:26px 24px;box-shadow:var(--shadow);overflow:hidden;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;}
.bento-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#BCD2F7;}
.bento-card::before{content:"";position:absolute;right:-40px;top:-40px;width:130px;height:130px;border-radius:50%;background:radial-gradient(circle,rgba(61,109,242,.12),transparent 70%);}
.bento-lg{grid-column:span 6;min-height:220px;display:flex;flex-direction:column;justify-content:flex-end;}
.bento-md{grid-column:span 6;min-height:180px;}
.bento-sm{grid-column:span 6;min-height:150px;}
.bento-icon{width:44px;height:44px;border-radius:12px;background:var(--bg-soft);color:var(--blue);display:flex;align-items:center;justify-content:center;font-size:19px;margin-bottom:16px;}
.bento-card.b-mint .bento-icon{background:#E4F8F5;color:#1E9C8E;}
.bento-card.b-coral .bento-icon{background:#FFEDEA;color:#D9492F;}
.bento-title{font-size:19px;font-weight:700;margin-bottom:9px;line-height:1.4;}
.bento-text{font-size:14.5px;color:var(--muted);line-height:1.75;}
.bento-tag{display:inline-flex;align-items:center;font-size:12px;font-weight:600;color:var(--blue);background:#EDF3FF;border-radius:999px;padding:3px 11px;margin-top:14px;}

/* ---------- 结果对比 ---------- */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:stretch;}
.compare-card{border-radius:var(--r-lg);padding:30px 28px;border:1px solid var(--border);background:#fff;box-shadow:var(--shadow);}
.compare-card.weak{background:#FBFCFF;border-style:dashed;}
.compare-card.strong{background:linear-gradient(180deg,#FFFFFF 0%,#F4F8FF 100%);border:1.5px solid #9EBBF5;box-shadow:0 16px 40px rgba(33,72,184,.12);}
.compare-head{display:flex;align-items:center;gap:10px;margin-bottom:20px;}
.compare-head h3{font-size:19px;font-weight:700;}
.compare-list li{display:flex;gap:12px;padding:11px 0;border-bottom:1px dashed #EAF1FC;font-size:14.5px;line-height:1.7;color:#3F5275;}
.compare-list li:last-child{border-bottom:0;}
.compare-list li b{flex:0 0 auto;font-weight:600;color:var(--text);}
.compare-card.weak .compare-list li{color:#8B99B0;}
.compare-card.weak .compare-list li b{color:#8B99B0;}
.mark{width:20px;height:20px;border-radius:6px;display:inline-flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;flex:0 0 auto;margin-top:3px;}
.mark.no{background:#EEF1F6;color:#9AA7BA;}
.mark.yes{background:#E3EEFF;color:var(--blue);}

/* ---------- 里程碑 ---------- */
.timeline{position:relative;padding-left:34px;}
.timeline::before{content:"";position:absolute;left:9px;top:8px;bottom:8px;width:2px;background:linear-gradient(180deg,#C9DAF8,#E6EEFB);}
.timeline-item{position:relative;padding:0 0 30px 0;}
.timeline-item:last-child{padding-bottom:0;}
.timeline-dot{position:absolute;left:-33px;top:6px;width:16px;height:16px;border-radius:50%;background:#fff;border:3px solid var(--blue);box-shadow:0 0 0 4px rgba(61,109,242,.12);}
.timeline-date{font-size:13px;font-weight:700;color:var(--blue);letter-spacing:.4px;margin-bottom:5px;}
.timeline-title{font-size:18px;font-weight:700;margin-bottom:6px;}
.timeline-text{font-size:14.5px;color:var(--muted);line-height:1.8;}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#B9CFF7;}
.news-card:focus-visible{outline:3px solid rgba(61,109,242,.25);outline-offset:3px;}
.news-thumb{aspect-ratio:16/10;overflow:hidden;background:#E8F0FF;}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.news-card:hover .news-thumb img{transform:scale(1.05);}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;}
.tag{display:inline-flex;align-items:center;font-size:12px;font-weight:600;color:var(--blue);background:#EDF3FF;border-radius:999px;padding:3px 11px;max-width:65%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.news-date{font-size:12.5px;color:#93A1B7;}
.news-body h3{font-size:17.5px;font-weight:700;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-body p{font-size:14px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.empty-state{background:#fff;border:1px dashed #C9D8F0;border-radius:var(--r-lg);padding:56px 24px;text-align:center;color:var(--muted);}
.empty-icon{width:52px;height:52px;margin:0 auto 14px;border-radius:50%;background:var(--bg-soft);color:#9AB4DF;display:flex;align-items:center;justify-content:center;font-size:22px;}
.empty-inline{color:var(--muted);font-size:14.5px;padding:18px 0;}

/* ---------- 分类入口 ---------- */
.cat-entry{display:grid;grid-template-columns:1.4fr 1fr;gap:24px;align-items:stretch;}
.cat-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);padding:34px 32px;box-shadow:var(--shadow);display:flex;flex-direction:column;justify-content:space-between;}
.cat-card h3{font-size:23px;font-weight:700;margin-bottom:12px;line-height:1.4;}
.cat-card p{font-size:15px;color:var(--muted);line-height:1.85;margin-bottom:22px;}
.cat-tags{display:flex;flex-wrap:wrap;gap:9px;}
.cat-tag{font-size:13px;color:#2A4370;background:var(--bg-soft);border:1px solid #DEE9FB;border-radius:999px;padding:6px 13px;}
.cat-visual{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow);border:1px solid #E1EBFA;min-height:220px;}
.cat-visual img{width:100%;height:100%;object-fit:cover;}

/* ---------- 平台保障 ---------- */
.guard-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.guard-card{display:flex;gap:16px;background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);padding:22px;box-shadow:0 6px 18px rgba(31,60,120,.05);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;}
.guard-card:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:#BFD4F8;}
.guard-icon{flex:0 0 auto;width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:18px;background:var(--bg-soft);color:var(--blue);}
.guard-card.g-mint .guard-icon{background:#E4F8F5;color:#1E9C8E;}
.guard-card.g-coral .guard-icon{background:#FFEDEA;color:#D9492F;}
.guard-card h3{font-size:16px;font-weight:700;margin-bottom:6px;}
.guard-card p{font-size:13.8px;color:var(--muted);line-height:1.7;}

/* ---------- 版本更新 ---------- */
.log-list{background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);box-shadow:var(--shadow);overflow:hidden;}
.log-item{display:grid;grid-template-columns:120px 100px 1fr;gap:18px;align-items:center;padding:20px 26px;border-bottom:1px solid #EDF3FC;transition:background .2s ease;}
.log-item:last-child{border-bottom:0;}
.log-item:hover{background:#F8FBFF;}
.log-date{font-size:13.5px;color:var(--muted);}
.log-ver{font-size:12.5px;font-weight:700;color:var(--blue);background:#EDF3FF;border-radius:999px;padding:3px 12px;justify-self:start;}
.log-item p{font-size:14.5px;color:#3F5275;line-height:1.7;}

/* ---------- 多端 ---------- */
.multi-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.multi-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);padding:28px 24px;text-align:center;box-shadow:var(--shadow);transition:transform .22s ease,box-shadow .22s ease;}
.multi-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.multi-icon{width:56px;height:56px;margin:0 auto 16px;border-radius:16px;background:var(--bg-soft);color:var(--blue);display:flex;align-items:center;justify-content:center;font-size:23px;}
.multi-card h3{font-size:17px;font-weight:700;margin-bottom:8px;}
.multi-card p{font-size:14px;color:var(--muted);line-height:1.75;}

/* ---------- 排行榜 ---------- */
.rank-list{background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);box-shadow:var(--shadow);padding:8px 0;overflow:hidden;}
.rank-list li{display:flex;align-items:center;gap:16px;padding:15px 26px;border-bottom:1px solid #F0F5FC;transition:background .2s ease;}
.rank-list li:last-child{border-bottom:0;}
.rank-list li:hover{background:#F8FBFF;}
.rank-no{flex:0 0 auto;width:26px;height:26px;border-radius:8px;background:var(--bg-soft);color:var(--blue);font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;}
.rank-list li:nth-child(1) .rank-no{background:var(--coral);color:#fff;}
.rank-list li:nth-child(2) .rank-no{background:#FFB23E;color:#fff;}
.rank-list li:nth-child(3) .rank-no{background:var(--mint);color:#fff;}
.rank-list a{flex:1;font-size:15px;font-weight:500;line-height:1.6;transition:color .2s ease;}
.rank-list a:hover{color:var(--blue);}
.rank-date{flex:0 0 auto;font-size:12.5px;color:#93A1B7;}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative;}
.step-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);padding:26px 22px;box-shadow:var(--shadow);transition:transform .22s ease,box-shadow .22s ease;}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.step-num{width:36px;height:36px;border-radius:11px;background:var(--blue);color:#fff;font-weight:700;font-size:15px;display:flex;align-items:center;justify-content:center;margin-bottom:15px;}
.step-card h3{font-size:16.5px;font-weight:700;margin-bottom:8px;line-height:1.45;}
.step-card p{font-size:13.8px;color:var(--muted);line-height:1.75;}

/* ---------- 评价 ---------- */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.review-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);padding:26px 24px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:14px;transition:transform .22s ease,box-shadow .22s ease;}
.review-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.review-card:nth-child(2){margin-top:26px;}
.review-top{display:flex;align-items:center;gap:12px;}
.review-avatar{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,#DCE8FF,#B9CFF7);color:#2148B8;font-weight:700;display:flex;align-items:center;justify-content:center;font-size:15px;}
.review-name{font-size:15px;font-weight:700;}
.review-city{font-size:12.5px;color:var(--muted);}
.stars{color:#FFB23E;font-size:14px;letter-spacing:2px;}
.review-card p{font-size:14.2px;color:#41547A;line-height:1.8;}

/* ---------- 快速解答 ---------- */
.quick-list{display:grid;gap:14px;}
.quick-item{background:#fff;border:1px solid var(--border);border-left:3px solid var(--mint);border-radius:var(--r-md);padding:18px 22px;display:grid;grid-template-columns:280px 1fr;gap:20px;align-items:center;transition:box-shadow .2s ease,border-color .2s ease;}
.quick-item:hover{box-shadow:var(--shadow);border-color:#BFD4F8;border-left-color:var(--blue);}
.quick-item h3{font-size:16px;font-weight:700;line-height:1.5;}
.quick-item p{font-size:14px;color:var(--muted);line-height:1.75;}

/* ---------- FAQ ---------- */
.faq-item{background:#fff;border:1px solid var(--border);border-radius:14px;margin-bottom:12px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;}
.faq-item:hover{border-color:#C4D6F7;}
.faq-item[open]{border-color:#C4D6F7;box-shadow:var(--shadow);border-left:3px solid var(--blue);}
.faq-item summary{list-style:none;cursor:pointer;padding:20px 58px 20px 24px;font-weight:600;font-size:16.5px;position:relative;line-height:1.6;transition:color .2s ease;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--blue);}
.faq-item summary:focus-visible{outline:3px solid rgba(61,109,242,.25);outline-offset:-3px;}
.faq-item summary::after{content:"+";position:absolute;right:24px;top:50%;transform:translateY(-50%);font-size:22px;font-weight:400;color:var(--blue);transition:transform .25s ease;}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg);}
.faq-body{padding:0 24px 22px;color:var(--muted);font-size:14.6px;line-height:1.85;background:#F8FBFF;}

/* ---------- 共建 ---------- */
.co-build{display:grid;grid-template-columns:1fr 1.1fr;gap:36px;align-items:center;background:#fff;border:1px solid var(--border);border-radius:22px;padding:38px;box-shadow:var(--shadow);}
.co-build-img{border-radius:16px;overflow:hidden;aspect-ratio:16/10;box-shadow:0 12px 28px rgba(31,60,120,.1);}
.co-build-img img{width:100%;height:100%;object-fit:cover;}
.co-build h2{font-size:27px;font-weight:700;line-height:1.35;margin-bottom:14px;}
.co-build p{font-size:15px;color:var(--muted);line-height:1.85;margin-bottom:20px;}

/* ---------- 表单 ---------- */
.join-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:44px;align-items:start;}
.join-info h2{font-size:30px;font-weight:700;line-height:1.35;margin-bottom:16px;}
.join-info p{font-size:15px;color:var(--muted);line-height:1.9;margin-bottom:22px;}
.join-note{background:#FFF3F0;border:1px solid #FFD5CC;border-radius:14px;padding:16px 18px;font-size:13.5px;color:#B8432D;line-height:1.75;}
.join-form{background:#fff;border:1px solid var(--border);border-radius:20px;padding:30px;box-shadow:var(--shadow);}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.form-field{margin-bottom:16px;}
.form-field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:7px;color:#2A3A5C;}
.form-field label .req{color:var(--coral);margin-left:2px;}
.form-field input,.form-field select,.form-field textarea{width:100%;height:48px;border:1px solid var(--border);border-radius:var(--r-sm);padding:0 14px;background:#FBFDFF;transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;}
.form-field textarea{height:96px;padding:12px 14px;resize:vertical;line-height:1.6;}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{outline:none;border-color:var(--blue);background:#fff;box-shadow:0 0 0 3px rgba(61,109,242,.18);}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13.2px;color:var(--muted);line-height:1.65;margin-bottom:12px;}
.check-row input{flex:0 0 auto;width:17px;height:17px;height:auto;margin-top:3px;accent-color:var(--blue);}
.join-form .btn{width:100%;margin-top:8px;}
.form-note{margin-top:14px;font-size:13.5px;color:#1E9C8E;display:none;}
.form-note.is-visible{display:block;}

/* ---------- 页脚 ---------- */
.site-footer{background:#fff;border-top:1px solid var(--border);padding:60px 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:36px;border-bottom:1px solid #EEF3FB;}
.footer-brand{font-size:16px;font-weight:800;margin-bottom:12px;display:flex;align-items:center;gap:9px;flex-wrap:wrap;}
.footer-brand:focus-visible{outline:3px solid rgba(61,109,242,.25);outline-offset:4px;border-radius:8px;}
.footer-about{font-size:13.8px;color:var(--muted);line-height:1.85;max-width:320px;}
.footer-title{font-size:14px;font-weight:700;margin-bottom:14px;color:var(--text);}
.footer-links li{margin-bottom:10px;}
.footer-links a{font-size:13.8px;color:var(--muted);transition:color .2s ease;}
.footer-links a:hover{color:var(--blue);}
.footer-links a:focus-visible{outline:3px solid rgba(61,109,242,.25);outline-offset:3px;border-radius:6px;}
.footer-tip{font-size:13.2px;color:var(--muted);line-height:1.8;background:#FFF3F0;border:1px solid #FFDCD5;border-radius:12px;padding:14px 16px;color:#B8432D;}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;padding-top:22px;font-size:13px;color:#93A1B7;}
.footer-bottom a{color:#93A1B7;transition:color .2s ease;}
.footer-bottom a:hover{color:var(--blue);}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .stat-grid{grid-template-columns:repeat(3,1fr);}
  .hero-inner{grid-template-columns:1fr;gap:40px;}
  .hero-map{aspect-ratio:16/9;max-width:640px;}
  .cat-entry{grid-template-columns:1fr;}
  .cat-visual{order:-1;min-height:200px;}
  .co-build{grid-template-columns:1fr;}
}
@media (max-width:1024px){
  .nav-wrap{grid-template-columns:auto 1fr auto;min-height:72px;gap:12px;}
  .nav-side,.nav-cta{display:none;}
  .nav-burger{display:flex;}
  .badge-18-mobile{display:inline-flex;}
  .brand{font-size:15px;}
  .bento-lg,.bento-md,.bento-sm{grid-column:span 12;min-height:0;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .guard-grid{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .review-grid{grid-template-columns:1fr;gap:18px;}
  .review-card:nth-child(2){margin-top:0;}
  .compare-grid{grid-template-columns:1fr;}
  .join-grid{grid-template-columns:1fr;gap:30px;}
  .quick-item{grid-template-columns:1fr;gap:8px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .section{padding:64px 0;}
}
@media (max-width:768px){
  .container{padding:0 18px;}
  .section{padding:54px 0;}
  .section-title{font-size:25px;}
  .hero{padding:48px 0 60px;}
  .hero-lede{font-size:15.5px;}
  .hero-actions .btn{flex:1 1 auto;}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:14px;}
  .stat-card{padding:20px 16px;}
  .stat-num{font-size:24px;}
  .news-grid{grid-template-columns:1fr;}
  .guard-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .multi-grid{grid-template-columns:1fr;}
  .log-item{grid-template-columns:1fr;gap:6px;padding:18px 20px;}
  .co-build{padding:24px;}
  .co-build h2{font-size:22px;}
  .join-form{padding:22px;}
  .form-row{grid-template-columns:1fr;}
  .float-a{top:12px;left:12px;padding:9px 12px;}
  .float-b{bottom:14px;right:12px;padding:9px 12px;}
  .float-card strong{font-size:15px;}
  .float-card span{font-size:11px;}
  .quick-item{padding:16px 18px;}
  .faq-item summary{font-size:15.5px;padding:17px 48px 17px 18px;}
  .faq-body{padding:0 18px 18px;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .brand-text{max-width:210px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:inline-block;vertical-align:middle;}
}
@media (max-width:520px){
  .hero h1{font-size:27px;}
  .section-title{font-size:22px;}
  .hero-br{display:none;}
  .btn-lg{padding:13px 22px;font-size:15px;}
  .rank-list li{padding:13px 18px;gap:12px;}
  .rank-list a{font-size:14px;}
  .rank-date{display:none;}
  .footer-bottom{flex-direction:column;gap:6px;}
}

/* roulang page: article */
:root{
  --blue:#3D6DF2;
  --blue-dark:#2148B8;
  --mint:#2EC4B6;
  --coral:#FF6B57;
  --bg:#F7FAFF;
  --bg-soft:#EEF4FF;
  --card:#FFFFFF;
  --text:#0F1F3D;
  --muted:#5B6B82;
  --border:#DCE6F5;
  --r-lg:18px;
  --r-md:12px;
  --r-sm:10px;
  --shadow:0 10px 30px rgba(31,60,120,.08);
  --shadow-hover:0 16px 40px rgba(31,60,120,.12);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;padding:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  color:var(--text);background:var(--bg);font-size:16px;line-height:1.8;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;border:0;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
.container{width:100%;max-width:1220px;margin:0 auto;padding:0 24px;}
.section{padding:80px 0;position:relative;}
.section-white{background:#FFFFFF;}
.section-soft{background:var(--bg-soft);}
.section-head{max-width:780px;margin-bottom:36px;}
.section-title{font-size:30px;line-height:1.32;font-weight:700;letter-spacing:-.3px;margin:0 0 12px;}
.section-desc{color:var(--muted);font-size:16px;line-height:1.85;margin:0;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.4px;color:var(--blue);background:#EFF5FF;border:1px solid #D9E5FF;padding:6px 14px;border-radius:999px;margin-bottom:14px;}
.muted{color:var(--muted);}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-md);padding:12px 24px;font-size:15px;font-weight:600;line-height:1.2;border:1px solid transparent;cursor:pointer;transition:background .22s ease,color .22s ease,transform .18s ease,box-shadow .22s ease,border-color .22s ease;}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 8px 20px rgba(61,109,242,.24);}
.btn-primary:hover{background:var(--blue-dark);transform:translateY(-2px);box-shadow:0 12px 26px rgba(33,72,184,.28);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--blue);border-color:#B9CDF7;}
.btn-ghost:hover{background:var(--bg-soft);border-color:var(--blue);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-coral{background:var(--coral);color:#fff;box-shadow:0 8px 20px rgba(255,107,87,.26);}
.btn-coral:hover{background:#E8553F;transform:translateY(-2px);}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:var(--r-sm);}
.btn:focus-visible{outline:3px solid rgba(61,109,242,.25);outline-offset:2px;}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--border);box-shadow:0 4px 18px rgba(31,60,120,.05);}
.nav-wrap{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:18px;min-height:80px;}
.nav-side{display:flex;align-items:center;gap:22px;}
.nav-right{justify-content:flex-end;}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--text);padding:6px 2px;transition:color .2s ease;white-space:nowrap;}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;background:var(--blue);transform:scaleX(0);transform-origin:center;transition:transform .22s ease;}
.nav-link:hover{color:var(--blue);}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1);}
.nav-link.active{color:var(--blue);font-weight:600;}
.brand{display:inline-flex;align-items:center;gap:9px;justify-self:center;font-size:16px;font-weight:800;letter-spacing:-.2px;color:var(--text);transition:color .2s ease;white-space:nowrap;}
.brand:hover{color:var(--blue-dark);}
.brand:focus-visible{outline:3px solid rgba(61,109,242,.25);outline-offset:4px;border-radius:8px;}
.badge-18{display:inline-flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;letter-spacing:.5px;color:#C33A26;background:#FFE9E5;border:1px solid #FFC9C0;border-radius:999px;padding:2px 8px;line-height:1.5;}
.nav-burger{display:none;flex-direction:column;justify-content:center;gap:5px;width:42px;height:42px;border:1px solid var(--border);background:#fff;border-radius:10px;cursor:pointer;padding:0 10px;transition:border-color .2s ease,box-shadow .2s ease;}
.nav-burger span{display:block;height:2px;width:100%;background:var(--text);border-radius:2px;transition:transform .22s ease,opacity .22s ease;}
.nav-burger:hover{border-color:var(--blue);}
.nav-burger:focus-visible{outline:3px solid rgba(61,109,242,.25);outline-offset:2px;}
.mobile-menu{display:none;border-top:1px solid var(--border);background:#fff;padding:10px 24px 22px;}
.mobile-menu.open{display:block;}
.mobile-menu a{display:block;padding:15px 4px;font-size:16px;font-weight:600;color:var(--text);border-bottom:1px solid #EEF3FB;transition:color .2s ease,padding-left .2s ease;}
.mobile-menu a:hover{color:var(--blue);padding-left:10px;}
.mobile-menu .mobile-cta{margin-top:18px;border-bottom:0;text-align:center;background:var(--blue);color:#fff;border-radius:var(--r-md);padding:14px;}
.mobile-menu .mobile-cta:hover{padding-left:4px;background:var(--blue-dark);}

/* ---------- 文章页顶部 ---------- */
.article-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#EFF6FF 0%,#F7FAFF 100%);
  border-bottom:1px solid var(--border);
  padding:36px 0 52px;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(#C3D7F6 1.1px,transparent 1.1px);
  background-size:26px 26px;opacity:.5;
  -webkit-mask-image:linear-gradient(180deg,#000 0%,rgba(0,0,0,.1) 90%,transparent 100%);
  mask-image:linear-gradient(180deg,#000 0%,rgba(0,0,0,.1) 90%,transparent 100%);
  pointer-events:none;
}
.article-hero-inner{position:relative;max-width:900px;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);margin-bottom:20px;}
.breadcrumb a{color:var(--muted);transition:color .2s ease;}
.breadcrumb a:hover{color:var(--blue);}
.breadcrumb .sep{color:#B6C4DC;}
.breadcrumb .current{color:#31456C;font-weight:600;}
.post-tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px;}
.tag-pill{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;color:var(--blue);background:#E9F0FF;border:1px solid #D5E3FF;border-radius:999px;padding:5px 13px;}
.tag-pill.mint{color:#17786E;background:#E2F8F5;border-color:#BEEEE8;}
.tag-pill.coral{color:#C33A26;background:#FFE9E5;border-color:#FFC9C0;}
.article-h1{font-size:clamp(26px,3.2vw,42px);line-height:1.28;font-weight:800;letter-spacing:-.5px;margin:0 0 18px;color:var(--text);}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;font-size:14px;color:var(--muted);}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:7px;}
.article-meta .meta-dot{width:6px;height:6px;border-radius:50%;background:var(--mint);}

/* ---------- 布局 ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start;padding:56px 0 72px;}
.article-main{min-width:0;}
.article-card{background:var(--card);border:1px solid #E4ECF9;border-radius:var(--r-lg);box-shadow:var(--shadow);padding:40px 44px;}

/* ---------- 正文排版 ---------- */
.article-body{font-size:17px;line-height:1.85;color:#22324D;word-break:break-word;}
.article-body > *:first-child{margin-top:0;}
.article-body h2{font-size:24px;line-height:1.42;font-weight:700;color:var(--text);margin:40px 0 14px;padding-left:14px;border-left:4px solid var(--blue);border-radius:2px;}
.article-body h3{font-size:19.5px;line-height:1.5;font-weight:700;color:var(--text);margin:30px 0 12px;}
.article-body h4{font-size:17px;font-weight:700;margin:24px 0 10px;}
.article-body p{margin:0 0 1.15em;}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.5em;}
.article-body li{margin-bottom:.5em;}
.article-body blockquote{margin:26px 0;padding:16px 22px;background:var(--bg-soft);border-left:3px solid var(--blue);border-radius:0 10px 10px 0;color:#33456A;}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:12px;margin:24px auto;}
.article-body a{color:var(--blue);text-decoration:underline;text-underline-offset:3px;transition:color .2s ease;}
.article-body a:hover{color:var(--blue-dark);}
.article-body code{background:#EEF4FF;color:#2A4370;padding:2px 7px;border-radius:6px;font-size:.9em;}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--border);padding:10px 13px;text-align:left;}
.article-body th{background:var(--bg-soft);font-weight:700;}
.article-body hr{border:0;border-top:1px solid var(--border);margin:34px 0;}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px;}

/* ---------- 侧栏 ---------- */
.side-card{background:#fff;border:1px solid #E4ECF9;border-radius:var(--r-lg);box-shadow:var(--shadow);padding:24px;}
.side-card + .side-card{margin-top:20px;}
.side-title{font-size:16px;font-weight:700;margin:0 0 14px;display:flex;align-items:center;gap:8px;}
.side-title .bar{width:4px;height:16px;border-radius:2px;background:var(--blue);display:inline-block;}
.side-list{list-style:none;margin:0;padding:0;}
.side-list li{position:relative;padding-left:16px;font-size:14px;line-height:1.75;color:#3A4C6B;margin-bottom:12px;}
.side-list li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--mint);}
.side-list li:last-child{margin-bottom:0;}
.side-tip{background:#E6F9F6;border:1px solid #BFEDE7;border-radius:var(--r-md);padding:14px 16px;font-size:13.5px;line-height:1.8;color:#176B62;}
.side-cta{background:linear-gradient(160deg,#EFF5FF 0%,#F7FAFF 100%);border:1px solid #D9E5FF;border-radius:var(--r-lg);padding:24px;box-shadow:var(--shadow);}
.side-cta h3{font-size:17px;font-weight:700;margin:0 0 10px;}
.side-cta p{font-size:13.5px;color:var(--muted);line-height:1.8;margin:0 0 16px;}

/* ---------- 审核与免责 ---------- */
.notice-card{background:#fff;border:1px solid #E4ECF9;border-radius:var(--r-lg);box-shadow:var(--shadow);padding:32px 36px;margin-top:32px;}
.notice-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px;}
.notice-item h3{font-size:15.5px;font-weight:700;margin:0 0 8px;display:flex;align-items:center;gap:8px;}
.notice-item p{font-size:14px;line-height:1.8;color:var(--muted);margin:0;}
.icon-badge{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:9px;background:#E9F0FF;color:var(--blue);flex:0 0 auto;}
.icon-badge.mint{background:#E2F8F5;color:#17988C;}
.icon-badge.coral{background:#FFE9E5;color:#D1482F;}

/* ---------- 推荐列表 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:22px;}
.related-card{display:block;background:#fff;border:1px solid #E4ECF9;border-radius:var(--r-lg);box-shadow:var(--shadow);padding:24px;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;}
.related-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#BCD2F7;}
.related-card:focus-visible{outline:3px solid rgba(61,109,242,.25);outline-offset:3px;}
.related-card h3{font-size:17px;font-weight:700;line-height:1.5;margin:0 0 10px;color:var(--text);}
.related-card p{font-size:13.5px;line-height:1.8;color:var(--muted);margin:0 0 14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.related-meta{font-size:12.5px;color:#8494AD;display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 返回 / CTA ---------- */
.back-bar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;margin-top:36px;padding:22px 26px;background:#fff;border:1px solid #E4ECF9;border-radius:var(--r-lg);box-shadow:var(--shadow);}
.back-bar .back-hint{font-size:14px;color:var(--muted);margin:0;}
.empty-box{text-align:center;padding:70px 24px;background:#fff;border:1px dashed #C9D9F2;border-radius:var(--r-lg);}
.empty-box h2{font-size:22px;font-weight:700;margin:0 0 12px;}
.empty-box p{color:var(--muted);margin:0 0 22px;}

/* ---------- 页脚 ---------- */
.site-footer{background:#FFFFFF;border-top:1px solid var(--border);padding:64px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:inline-flex;align-items:center;gap:9px;font-size:16px;font-weight:800;color:var(--text);margin-bottom:14px;transition:color .2s ease;}
.footer-brand:hover{color:var(--blue);}
.footer-about{font-size:14px;line-height:1.85;color:var(--muted);margin:0;max-width:340px;}
.footer-title{font-size:15px;font-weight:700;margin:0 0 16px;color:var(--text);}
.footer-links{list-style:none;margin:0;padding:0;}
.footer-links li{margin-bottom:11px;}
.footer-links a{font-size:14px;color:var(--muted);transition:color .2s ease,padding-left .2s ease;}
.footer-links a:hover{color:var(--blue);padding-left:4px;}
.footer-links a:focus-visible{outline:3px solid rgba(61,109,242,.25);outline-offset:3px;border-radius:4px;}
.footer-tip{font-size:13.5px;line-height:1.85;color:var(--muted);background:#F7FAFF;border:1px solid var(--border);border-radius:var(--r-md);padding:14px 16px;}
.footer-bottom{margin-top:44px;padding-top:22px;border-top:1px solid var(--border);display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:13px;color:#8494AD;}
.footer-bottom a{color:#8494AD;transition:color .2s ease;}
.footer-bottom a:hover{color:var(--blue);}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-wrap{grid-template-columns:1fr auto 1fr;min-height:70px;gap:10px;}
  .nav-side{display:none !important;}
  .nav-burger{display:flex;order:1;justify-self:start;}
  .brand{order:2;justify-self:center;font-size:14px;}
  .article-layout{grid-template-columns:1fr;gap:32px;padding:40px 0 56px;}
  .article-card{padding:30px 26px;}
  .notice-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:60px 0;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .section{padding:48px 0;}
  .section-title{font-size:24px;}
  .article-hero{padding:26px 0 38px;}
  .article-h1{font-size:25px;line-height:1.4;}
  .article-meta{font-size:13px;gap:8px 16px;}
  .article-card{padding:24px 20px;border-radius:14px;}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body h2{font-size:20px;}
  .article-body h3{font-size:18px;}
  .notice-card{padding:24px 20px;}
  .back-bar{padding:18px 20px;}
  .back-bar .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .brand{font-size:12.5px;}
}
@media (max-width:520px){
  .article-h1{font-size:22px;}
  .brand span:first-child{max-width:180px;overflow:hidden;text-overflow:ellipsis;}
  .related-grid{grid-template-columns:1fr;}
}

@media (max-width:900px){
  .join-wrap{grid-template-columns:1fr !important;gap:28px !important;padding:30px 24px !important;}
}
@media (max-width:520px){
  .join-wrap form > div:first-child{grid-template-columns:1fr !important;}
}

/* roulang page: category1 */
:root{
  --blue:#3D6DF2;
  --blue-dark:#2148B8;
  --mint:#2EC4B6;
  --coral:#FF6B57;
  --bg:#F7FAFF;
  --bg-soft:#EEF4FF;
  --card:#FFFFFF;
  --text:#0F1F3D;
  --muted:#5B6B82;
  --border:#DCE6F5;
  --r-lg:18px;
  --r-md:12px;
  --r-sm:10px;
  --shadow:0 10px 30px rgba(31,60,120,.08);
  --shadow-hover:0 16px 40px rgba(31,60,120,.12);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,p,figure{margin:0;}
ul{margin:0;padding:0;list-style:none;}
a{color:inherit;text-decoration:none;}
img{display:block;max-width:100%;border:0;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{background:none;border:0;}
.container{width:100%;max-width:1220px;margin:0 auto;padding:0 24px;}
.section{padding:76px 0;position:relative;}
.section-white{background:#FFFFFF;}
.section-soft{background:var(--bg-soft);}
.section-head{max-width:760px;margin-bottom:38px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.4px;color:var(--blue);background:#EFF5FF;border:1px solid #D9E5FF;padding:6px 14px;border-radius:999px;margin-bottom:16px;}
.section-white .eyebrow{background:#F1F6FF;}
.section-title{font-size:31px;line-height:1.32;font-weight:700;letter-spacing:-.3px;margin-bottom:12px;}
.section-desc{color:var(--muted);font-size:16px;line-height:1.85;}
.muted{color:var(--muted);}
/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-md);padding:13px 26px;font-size:15px;font-weight:600;line-height:1.2;border:1px solid transparent;cursor:pointer;transition:background .22s ease,color .22s ease,transform .18s ease,box-shadow .22s ease,border-color .22s ease;}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 8px 20px rgba(61,109,242,.24);}
.btn-primary:hover{background:var(--blue-dark);transform:translateY(-2px);box-shadow:0 12px 26px rgba(33,72,184,.28);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--blue);border-color:#B9CDF7;}
.btn-ghost:hover{background:var(--bg-soft);border-color:var(--blue);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:var(--r-sm);}
.btn-lg{padding:15px 32px;font-size:16px;}
.btn:focus-visible{outline:3px solid rgba(61,109,242,.25);outline-offset:2px;}
/* 徽章 / 标签 */
.badge-18{display:inline-flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;letter-spacing:.5px;color:#C33A26;background:#FFE9E5;border:1px solid #FFC9C0;border-radius:999px;padding:2px 8px;line-height:1.5;white-space:nowrap;}
.badge-18-mobile{display:none;}
.tag{display:inline-flex;align-items:center;border-radius:999px;padding:2px 10px;font-size:12px;font-weight:600;line-height:1.7;white-space:nowrap;}
.tag-blue{background:#EAF1FF;color:var(--blue-dark);border:1px solid #D3E1FF;}
.tag-mint{background:#E4F8F5;color:#17867C;border:1px solid #BFEDE7;}
.tag-coral{background:#FFEDEA;color:#C33A26;border:1px solid #FFD2CA;}
/* 导航 */
.site-header{position:sticky;top:0;z-index:80;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--border);box-shadow:0 4px 18px rgba(31,60,120,.05);}
.nav-wrap{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:18px;min-height:80px;}
.nav-side{display:flex;align-items:center;gap:22px;min-width:0;}
.nav-right{justify-content:flex-end;}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--text);padding:6px 2px;transition:color .2s ease;white-space:nowrap;}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;background:var(--blue);transform:scaleX(0);transform-origin:center;transition:transform .22s ease;}
.nav-link:hover{color:var(--blue);}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1);}
.nav-link.active{color:var(--blue);font-weight:600;}
.brand{display:inline-flex;align-items:center;gap:9px;justify-self:center;font-size:16px;font-weight:800;letter-spacing:-.2px;color:var(--text);transition:color .2s ease;white-space:nowrap;min-width:0;}
.brand:hover{color:var(--blue-dark);}
.brand:focus-visible{outline:3px solid rgba(61,109,242,.25);outline-offset:4px;border-radius:8px;}
.nav-burger{display:none;flex-direction:column;justify-content:center;gap:5px;width:42px;height:42px;border:1px solid var(--border);background:#fff;border-radius:10px;cursor:pointer;padding:0 10px;transition:border-color .2s ease;}
.nav-burger span{display:block;height:2px;width:100%;background:var(--text);border-radius:2px;}
.nav-burger:hover{border-color:var(--blue);}
.nav-burger:focus-visible{outline:3px solid rgba(61,109,242,.25);outline-offset:2px;}
.mobile-menu{display:none;border-top:1px solid var(--border);background:#fff;padding:10px 24px 22px;}
.mobile-menu.open{display:block;}
.mobile-menu a{display:block;padding:15px 4px;font-size:16px;font-weight:600;color:var(--text);border-bottom:1px solid #EEF3FB;transition:color .2s ease,padding-left .2s ease;}
.mobile-menu a:hover{color:var(--blue);padding-left:10px;}
.mobile-menu .active{color:var(--blue);}
.mobile-menu .mobile-cta{margin-top:18px;border-bottom:0;text-align:center;background:var(--blue);color:#fff;border-radius:var(--r-md);padding:14px;}
.mobile-menu .mobile-cta:hover{background:var(--blue-dark);color:#fff;}
/* 分类页头 */
.cat-hero{position:relative;overflow:hidden;padding:34px 0 66px;background:linear-gradient(180deg,#EFF6FF 0%,#F7FAFF 100%);}
.cat-hero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(#C3D7F6 1.1px,transparent 1.1px);background-size:26px 26px;opacity:.5;-webkit-mask-image:linear-gradient(180deg,#000 0%,rgba(0,0,0,.15) 80%,transparent 100%);mask-image:linear-gradient(180deg,#000 0%,rgba(0,0,0,.15) 80%,transparent 100%);pointer-events:none;}
.cat-hero .container{position:relative;z-index:1;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted);margin-bottom:26px;}
.breadcrumb a{color:var(--muted);transition:color .2s ease;}
.breadcrumb a:hover{color:var(--blue);}
.breadcrumb .sep{color:#B8C7DE;}
.breadcrumb .current{color:var(--text);font-weight:600;}
.cat-hero-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:48px;align-items:start;}
.cat-hero h1{font-size:clamp(27px,3vw,42px);line-height:1.24;font-weight:800;letter-spacing:-.5px;margin:0 0 18px;}
.cat-hero h1 .hl{color:var(--blue);}
.cat-lede{font-size:16.5px;line-height:1.9;color:var(--muted);max-width:660px;}
.stat-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.stat-tag{display:inline-flex;align-items:baseline;gap:6px;background:#fff;border:1px solid var(--border);border-radius:12px;padding:9px 16px;font-size:14px;color:var(--muted);box-shadow:0 6px 16px rgba(31,60,120,.05);}
.stat-tag strong{font-size:19px;font-weight:800;color:var(--blue);line-height:1;}
.cat-side{background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);box-shadow:var(--shadow);padding:16px;}
.cat-side img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:14px;}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.tag-cloud span{display:inline-flex;align-items:center;font-size:12.5px;font-weight:500;color:#2A4370;background:#F4F8FF;border:1px solid var(--border);border-radius:999px;padding:5px 12px;transition:border-color .2s ease,color .2s ease;}
.tag-cloud span:hover{border-color:#9FBCF4;color:var(--blue);}
/* 筛选条 */
.filter-wrap{background:#fff;border-bottom:1px solid var(--border);padding:20px 0;}
.filter-bar{display:flex;align-items:center;gap:18px;flex-wrap:wrap;}
.filter-label{font-size:14px;font-weight:700;color:var(--text);white-space:nowrap;}
.filter-tags{display:flex;gap:10px;flex-wrap:wrap;flex:1;min-width:0;}
.filter-tag{border:1px solid var(--border);background:#fff;border-radius:999px;padding:8px 16px;font-size:14px;font-weight:500;color:var(--muted);cursor:pointer;transition:background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .18s ease;}
.filter-tag:hover{border-color:#9FBCF4;color:var(--blue);transform:translateY(-1px);}
.filter-tag.active{background:var(--blue);border-color:var(--blue);color:#fff;box-shadow:0 8px 18px rgba(61,109,242,.22);}
.filter-tag:focus-visible{outline:3px solid rgba(61,109,242,.25);outline-offset:2px;}
.filter-sort{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted);}
.filter-sort select{border:1px solid var(--border);border-radius:var(--r-sm);padding:8px 12px;background:#fff;color:var(--text);cursor:pointer;transition:border-color .2s ease,box-shadow .2s ease;}
.filter-sort select:focus-visible{outline:3px solid rgba(61,109,242,.25);outline-offset:2px;border-color:var(--blue);}
/* 话题列表 */
.topic-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;}
.topic-card{display:grid;grid-template-columns:168px minmax(0,1fr);gap:18px;background:#fff;border:1px solid #E4ECF9;border-radius:var(--r-lg);padding:16px;box-shadow:var(--shadow);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;}
.topic-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#B9CDF7;}
.topic-card:focus-visible{outline:3px solid rgba(61,109,242,.25);outline-offset:3px;}
.topic-thumb{border-radius:12px;overflow:hidden;background:var(--bg-soft);}
.topic-thumb img{width:100%;height:100%;min-height:120px;object-fit:cover;transition:transform .35s ease;}
.topic-card:hover .topic-thumb img{transform:scale(1.05);}
.topic-body{display:flex;flex-direction:column;gap:7px;min-width:0;}
.topic-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted);}
.topic-time{color:#8B9AB1;}
.topic-title{font-size:18px;font-weight:700;line-height:1.45;color:var(--text);transition:color .2s ease;}
.topic-card:hover .topic-title{color:var(--blue);}
.topic-desc{font-size:14px;line-height:1.7;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.list-more{display:flex;justify-content:center;margin-top:38px;}
.empty-state{text-align:center;padding:64px 24px;border:1px dashed #C9D9F2;border-radius:var(--r-lg);background:#fff;color:var(--muted);}
.empty-state .empty-icon{width:56px;height:56px;margin:0 auto 16px;border-radius:16px;border:1.5px dashed #B9CDF7;display:flex;align-items:center;justify-content:center;color:var(--blue);font-size:20px;font-weight:800;}
/* 精选专题 */
.feature-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.feature-card{display:block;background:#fff;border:1px solid #E4ECF9;border-radius:var(--r-lg);padding:24px 22px;box-shadow:var(--shadow);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;}
.feature-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#B9CDF7;}
.feature-card:focus-visible{outline:3px solid rgba(61,109,242,.25);outline-offset:3px;}
.feature-card h3{font-size:17px;font-weight:700;line-height:1.5;margin:14px 0 8px;}
.feature-card p{font-size:14px;color:var(--muted);line-height:1.75;}
/* 安全指南 */
.safety-grid{display:grid;grid-template-columns:.92fr 1.08fr;gap:42px;align-items:center;}
.safety-figure{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--border);background:#fff;}
.safety-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.safety-steps{display:flex;flex-direction:column;gap:16px;}
.safety-step{display:flex;gap:16px;background:#fff;border:1px solid #E4ECF9;border-radius:var(--r-md);padding:18px 20px;box-shadow:0 6px 16px rgba(31,60,120,.05);transition:border-color .2s ease,box-shadow .2s ease;}
.safety-step:hover{border-color:#B9CDF7;box-shadow:var(--shadow);}
.step-num{flex:0 0 auto;width:38px;height:38px;border-radius:12px;background:#EAF1FF;color:var(--blue-dark);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;}
.safety-step h3{font-size:16.5px;font-weight:700;margin-bottom:5px;}
.safety-step p{font-size:14px;color:var(--muted);line-height:1.75;}
/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;}
.faq-item{background:#fff;border:1px solid #E4ECF9;border-left:3px solid transparent;border-radius:var(--r-md);overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;}
.faq-item:hover{border-color:#B9CDF7;box-shadow:0 8px 20px rgba(31,60,120,.06);}
.faq-item[open]{border-left-color:var(--blue);background:#FBFCFF;box-shadow:var(--shadow);}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;font-size:16px;font-weight:600;color:var(--text);line-height:1.6;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:focus-visible{outline:3px solid rgba(61,109,242,.25);outline-offset:-3px;}
.plus{position:relative;flex:0 0 auto;width:16px;height:16px;}
.plus::before,.plus::after{content:"";position:absolute;background:var(--blue);border-radius:2px;transition:transform .25s ease,opacity .25s ease;}
.plus::before{top:7px;left:0;width:16px;height:2px;}
.plus::after{left:7px;top:0;width:2px;height:16px;}
.faq-item[open] .plus::after{transform:scaleY(0);opacity:0;}
.faq-answer{padding:0 22px 20px;font-size:15px;color:var(--muted);line-height:1.85;}
/* 相关文章 */
.rel-list{background:#fff;border:1px solid #E4ECF9;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow);}
.rel-item a{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 22px;border-bottom:1px solid #EEF3FB;transition:background .2s ease,padding-left .2s ease;}
.rel-item:last-child a{border-bottom:0;}
.rel-item a:hover{background:var(--bg-soft);padding-left:28px;}
.rel-item a:focus-visible{outline:3px solid rgba(61,109,242,.25);outline-offset:-3px;}
.rel-title{font-size:15.5px;font-weight:600;color:var(--text);min-width:0;}
.rel-time{font-size:13px;color:#8B9AB1;white-space:nowrap;}
/* 转化条 */
.cta-strip{background:linear-gradient(120deg,#EAF1FF 0%,#F7FAFF 100%);border:1px solid #D9E5FF;border-radius:var(--r-lg);padding:40px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;box-shadow:var(--shadow);}
.cta-strip h2{font-size:26px;font-weight:800;line-height:1.35;margin-bottom:10px;letter-spacing:-.3px;}
.cta-strip p{font-size:15px;color:var(--muted);line-height:1.85;max-width:620px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
/* 页脚 */
.site-footer{background:#fff;border-top:1px solid var(--border);padding:56px 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand{display:inline-flex;align-items:center;gap:8px;font-size:16px;font-weight:800;margin-bottom:14px;line-height:1.4;}
.footer-brand:hover{color:var(--blue-dark);}
.footer-about{font-size:14px;color:var(--muted);line-height:1.85;max-width:350px;}
.footer-title{font-size:15px;font-weight:700;margin-bottom:14px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{font-size:14px;color:var(--muted);transition:color .2s ease,padding-left .2s ease;}
.footer-links a:hover{color:var(--blue);padding-left:4px;}
.footer-tip{font-size:13.5px;color:var(--muted);line-height:1.85;background:var(--bg-soft);border:1px solid var(--border);border-radius:var(--r-md);padding:14px 16px;}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:40px;padding-top:20px;border-top:1px solid var(--border);font-size:13px;color:var(--muted);}
.footer-bottom a{color:var(--blue);}
.footer-bottom a:hover{text-decoration:underline;}
/* 响应式 */
@media (max-width:1023px){
  .nav-wrap{grid-template-columns:auto 1fr auto;min-height:68px;gap:12px;}
  .nav-desktop{display:none;}
  .nav-burger{display:flex;}
  .badge-18-mobile{display:inline-flex;}
  .brand{font-size:13.5px;gap:6px;letter-spacing:-.4px;overflow:hidden;}
  .cat-hero-grid{grid-template-columns:1fr;gap:32px;}
  .cat-hero{padding:28px 0 52px;}
  .topic-grid{grid-template-columns:1fr;}
  .feature-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .safety-grid{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .section{padding:60px 0;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .section{padding:48px 0;}
  .section-title{font-size:24px;}
  .section-desc{font-size:15px;}
  .cat-hero h1{font-size:26px;}
  .cat-lede{font-size:15.5px;}
  .stat-tag{font-size:13px;padding:8px 13px;}
  .stat-tag strong{font-size:17px;}
  .filter-bar{gap:12px;}
  .filter-sort{width:100%;justify-content:space-between;}
  .topic-card{grid-template-columns:1fr;gap:14px;padding:14px;}
  .topic-thumb img{aspect-ratio:16/9;min-height:0;height:auto;}
  .topic-title{font-size:17px;}
  .feature-grid{grid-template-columns:1fr;}
  .cta-strip{padding:26px 22px;flex-direction:column;align-items:flex-start;}
  .cta-strip h2{font-size:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .rel-item a{flex-direction:column;align-items:flex-start;gap:4px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .faq-item summary{padding:16px 18px;font-size:15px;}
  .faq-answer{padding:0 18px 18px;font-size:14.5px;}
}
@media (max-width:520px){
  .brand{font-size:12.5px;}
  .cat-hero h1{font-size:23px;}
  .stat-tags{gap:8px;}
  .filter-tag{font-size:13px;padding:7px 13px;}
}