/* roulang page: index */
:root{
  --blue-900:#081a33;
  --blue-800:#0f2c52;
  --blue-700:#1746b6;
  --blue-600:#2563eb;
  --blue-500:#3b82f6;
  --sky-100:#e6f0ff;
  --sky-50:#f4f8ff;
  --ink:#0f1b2d;
  --ink-soft:#33455f;
  --muted:#5f7191;
  --line:#e3ebf7;
  --line-strong:#cfdcf0;
  --card:#ffffff;
  --radius-lg:16px;
  --radius:12px;
  --radius-sm:8px;
  --shadow-sm:0 1px 2px rgba(16,38,74,.05),0 6px 18px rgba(16,38,74,.06);
  --shadow-md:0 12px 32px rgba(16,38,74,.10);
  --shadow-lg:0 22px 54px rgba(16,38,74,.18);
  --maxw:1180px;
}
*,*::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",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:15px;
  line-height:1.75;
  color:var(--ink);
  background:#ffffff;
  padding-bottom:76px;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px;}
::selection{background:var(--blue-600);color:#fff;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;letter-spacing:.5px;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn:focus-visible{outline:3px solid rgba(59,130,246,.55);outline-offset:2px;}
.btn-primary{background:linear-gradient(180deg,#2f74f5,#1b52d4);color:#fff;box-shadow:0 8px 20px rgba(31,90,214,.32);}
.btn-primary:hover{background:linear-gradient(180deg,#2563eb,#1445b8);transform:translateY(-2px);box-shadow:0 14px 28px rgba(31,90,214,.38);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:rgba(255,255,255,.10);color:#fff;border-color:rgba(255,255,255,.55);backdrop-filter:blur(4px);}
.btn-ghost:hover{background:rgba(255,255,255,.22);border-color:#fff;transform:translateY(-2px);}
.btn-outline{background:#fff;color:var(--blue-700);border-color:var(--line-strong);}
.btn-outline:hover{border-color:var(--blue-500);color:var(--blue-600);transform:translateY(-2px);box-shadow:var(--shadow-sm);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 22px rgba(16,38,74,.10);background:rgba(255,255,255,.97);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px;gap:18px;}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(140deg,#2f74f5,#0f2c52);
  box-shadow:0 6px 16px rgba(23,70,182,.30);
}
.logo-mark svg{width:20px;height:20px;fill:#fff;}
.logo-text{font-size:17px;font-weight:800;letter-spacing:.5px;color:var(--blue-900);line-height:1.2;}
.logo-text small{display:block;font-size:10px;font-weight:500;color:var(--muted);letter-spacing:2px;margin-top:2px;}
.main-nav{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;display:inline-block;padding:8px 14px;border-radius:var(--radius-sm);
  font-size:14.5px;font-weight:600;color:var(--ink-soft);
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--blue-600);background:var(--sky-50);}
.nav-link.active{color:var(--blue-700);background:var(--sky-100);}
.nav-link.active::after{
  content:"";position:absolute;left:50%;bottom:-2px;transform:translateX(-50%);
  width:18px;height:3px;border-radius:2px;background:var(--blue-600);
}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line-strong);
  background:#fff;cursor:pointer;padding:0;place-items:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--blue-900);border-radius:2px;margin:3px auto;transition:.22s;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg);}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;background:var(--blue-900);color:#fff;}
.hero-bg{position:absolute;inset:0;z-index:0;}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.42;transform:scale(1.04);}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(6,22,44,.95) 0%,rgba(9,32,66,.86) 46%,rgba(10,40,86,.62) 100%);
}
.hero-inner{position:relative;z-index:1;padding:76px 20px 64px;max-width:var(--maxw);margin:0 auto;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;font-size:13px;font-weight:600;letter-spacing:.5px;
  background:rgba(59,130,246,.22);border:1px solid rgba(120,170,255,.45);color:#cfe2ff;
}
.hero-badge i{width:6px;height:6px;border-radius:50%;background:#5eead4;display:inline-block;box-shadow:0 0 0 4px rgba(94,234,212,.22);}
.hero-title{
  font-size:42px;line-height:1.28;font-weight:800;letter-spacing:1px;
  margin:22px 0 18px;max-width:820px;color:#fff;
}
.hero-title em{font-style:normal;color:#7fb2ff;}
.hero-sub{font-size:15.5px;line-height:1.85;color:#d3e2f7;max-width:760px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 15px;border-radius:999px;font-size:13px;font-weight:600;
  color:#dbe9ff;background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.20);
  transition:.2s;
}
.chip:hover{background:rgba(255,255,255,.18);border-color:rgba(255,255,255,.42);color:#fff;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.countdown{
  margin-top:34px;display:inline-flex;flex-wrap:wrap;align-items:center;gap:16px;
  padding:14px 22px;border-radius:var(--radius);
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.20);
  backdrop-filter:blur(6px);
}
.countdown-label{font-size:13px;font-weight:600;color:#bcd4f5;letter-spacing:1px;}
.cd-group{display:flex;gap:10px;}
.cd-item{text-align:center;min-width:52px;}
.cd-num{
  display:block;font-size:22px;font-weight:800;line-height:1.2;color:#fff;
  font-variant-numeric:tabular-nums;letter-spacing:1px;
}
.cd-label{display:block;font-size:11px;color:#a7c3e8;margin-top:2px;}

/* ============ 通用板块 ============ */
.section{padding:72px 0;}
.section-alt{background:var(--sky-50);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:740px;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:700;letter-spacing:2px;color:var(--blue-600);
  text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:3px;border-radius:2px;background:var(--blue-600);}
.section-title{
  font-size:30px;line-height:1.34;font-weight:800;letter-spacing:.5px;color:var(--blue-900);
  margin:14px 0 14px;
}
.section-desc{font-size:15px;line-height:1.85;color:var(--muted);}

/* ============ 数据条 ============ */
.stats-strip{
  position:relative;z-index:2;margin-top:-42px;
}
.stats-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px 24px;box-shadow:var(--shadow-md);
}
.stat-item{text-align:center;padding:6px 8px;border-right:1px solid var(--line);}
.stat-item:last-child{border-right:0;}
.stat-num{font-size:30px;font-weight:800;color:var(--blue-700);line-height:1.2;font-variant-numeric:tabular-nums;}
.stat-num span{font-size:15px;font-weight:700;margin-left:2px;color:var(--blue-500);}
.stat-label{font-size:13px;color:var(--muted);margin-top:6px;line-height:1.6;}

/* ============ 卡片 ============ */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px 24px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  height:100%;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#bcd4f5;}
.card-title{font-size:18px;font-weight:700;color:var(--blue-900);margin-bottom:10px;line-height:1.45;}
.card-text{font-size:14.5px;line-height:1.8;color:var(--muted);}
.icon-box{
  width:46px;height:46px;border-radius:12px;display:grid;place-items:center;margin-bottom:16px;
  background:linear-gradient(140deg,#e8f1ff,#d3e4ff);color:var(--blue-700);
}
.icon-box svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.card-tag{
  display:inline-block;margin-top:16px;padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;color:var(--blue-700);background:var(--sky-100);
}

/* ============ 场景演示 ============ */
.flow-layout{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center;}
.flow-step{
  display:flex;gap:18px;padding:20px 22px;border-radius:var(--radius);
  background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.flow-step + .flow-step{margin-top:16px;}
.flow-step:hover{transform:translateX(4px);box-shadow:var(--shadow-md);border-color:#bcd4f5;}
.flow-index{
  flex:0 0 42px;width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  font-size:16px;font-weight:800;color:#fff;background:linear-gradient(140deg,#3b82f6,#1746b6);
  box-shadow:0 8px 18px rgba(23,70,182,.28);
}
.flow-body h4{font-size:16px;font-weight:700;color:var(--blue-900);margin-bottom:6px;}
.flow-body p{font-size:14px;line-height:1.78;color:var(--muted);}
.media-frame{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-lg);background:#dce8fa;
}
.media-frame img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;transition:transform .4s ease;}
.media-frame:hover img{transform:scale(1.04);}
.media-caption{
  position:absolute;left:16px;right:16px;bottom:16px;
  padding:12px 16px;border-radius:var(--radius);color:#fff;
  background:linear-gradient(180deg,rgba(8,26,51,.15),rgba(8,26,51,.82));
  font-size:13px;line-height:1.6;
}

/* ============ 能力矩阵 ============ */
.matrix-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.matrix-item{
  display:flex;gap:14px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.matrix-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#bcd4f5;}
.matrix-icon{
  flex:0 0 38px;width:38px;height:38px;border-radius:10px;display:grid;place-items:center;
  background:var(--sky-100);color:var(--blue-700);
}
.matrix-icon svg{width:19px;height:19px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.matrix-item h4{font-size:15.5px;font-weight:700;color:var(--blue-900);margin-bottom:5px;}
.matrix-item p{font-size:13.5px;line-height:1.75;color:var(--muted);}

/* ============ BOSS 专题 ============ */
.boss-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.boss-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  display:flex;flex-direction:column;
}
.boss-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#bcd4f5;}
.boss-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:#dce8fa;}
.boss-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.boss-card:hover .boss-thumb img{transform:scale(1.06);}
.boss-level{
  position:absolute;top:12px;left:12px;padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:700;color:#fff;background:rgba(8,26,51,.72);
  backdrop-filter:blur(4px);border:1px solid rgba(255,255,255,.24);
}
.boss-body{padding:20px;display:flex;flex-direction:column;flex:1;}
.boss-body h4{font-size:17px;font-weight:700;color:var(--blue-900);margin-bottom:8px;}
.boss-body p{font-size:14px;line-height:1.78;color:var(--muted);flex:1;}
.boss-meta{
  margin-top:16px;padding-top:14px;border-top:1px dashed var(--line-strong);
  font-size:12.5px;color:var(--blue-700);font-weight:600;display:flex;justify-content:space-between;
}

/* ============ 口碑气泡 ============ */
.bubble-wall{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.bubble{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:22px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.bubble:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#bcd4f5;}
.bubble::before{
  content:"";position:absolute;top:14px;right:20px;font-size:44px;line-height:1;
  color:#e6f0ff;font-weight:800;
}
.bubble p{position:relative;z-index:1;font-size:14px;line-height:1.8;color:var(--ink-soft);}
.bubble-user{display:flex;align-items:center;gap:10px;margin-top:16px;}
.avatar{
  width:36px;height:36px;border-radius:50%;display:grid;place-items:center;
  font-size:13px;font-weight:800;color:#fff;background:linear-gradient(140deg,#3b82f6,#1746b6);
}
.bubble-user span{font-size:13px;font-weight:700;color:var(--blue-900);}
.bubble-user small{display:block;font-size:12px;color:var(--muted);font-weight:400;}

/* ============ 对比表 ============ */
.compare-wrap{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-sm);
}
.compare-table{width:100%;border-collapse:collapse;}
.compare-table th,.compare-table td{
  padding:16px 20px;text-align:left;font-size:14px;line-height:1.72;
  border-bottom:1px solid var(--line);vertical-align:top;
}
.compare-table thead th{background:var(--sky-50);font-size:13.5px;font-weight:700;color:var(--blue-900);letter-spacing:.5px;}
.compare-table thead th:nth-child(2){color:var(--blue-700);}
.compare-table tbody tr:last-child td{border-bottom:0;}
.compare-table tbody tr:hover{background:#fafcff;}
.compare-table td:first-child{font-weight:700;color:var(--blue-900);width:22%;}
.compare-table td:nth-child(2){color:var(--ink-soft);}
.compare-table td:nth-child(3){color:var(--muted);}

/* ============ 时间线 ============ */
.timeline{position:relative;padding-left:28px;}
.timeline::before{
  content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,#3b82f6,#dbe9ff);
}
.timeline-item{position:relative;padding:0 0 28px 8px;}
.timeline-item:last-child{padding-bottom:0;}
.timeline-item::before{
  content:"";position:absolute;left:-28px;top:6px;width:16px;height:16px;border-radius:50%;
  background:#fff;border:3px solid var(--blue-500);box-shadow:0 0 0 4px rgba(59,130,246,.14);
}
.timeline-item h4{font-size:16.5px;font-weight:700;color:var(--blue-900);margin-bottom:6px;}
.timeline-item p{font-size:14px;line-height:1.8;color:var(--muted);}

/* ============ 误区 FAQ ============ */
.faq-list{display:grid;gap:14px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 24px;box-shadow:var(--shadow-sm);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:#bcd4f5;box-shadow:var(--shadow-md);}
.faq-q{display:flex;gap:12px;font-size:16px;font-weight:700;color:var(--blue-900);line-height:1.55;}
.faq-q b{
  flex:0 0 26px;width:26px;height:26px;border-radius:8px;display:grid;place-items:center;
  font-size:13px;color:#fff;background:var(--blue-600);
}
.faq-a{margin-top:10px;padding-left:38px;font-size:14px;line-height:1.85;color:var(--muted);}

/* ============ 分类入口墙 ============ */
.cat-wall{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.cat-card{
  display:block;position:relative;overflow:hidden;
  background:linear-gradient(150deg,#0f2c52,#1746b6);
  border-radius:var(--radius-lg);padding:30px 26px;color:#fff;
  box-shadow:var(--shadow-md);
  transition:transform .22s ease,box-shadow .22s ease;
}
.cat-card:nth-child(2){background:linear-gradient(150deg,#134a8e,#2563eb);}
.cat-card:nth-child(3){background:linear-gradient(150deg,#0b2f5e,#1a5fb8);}
.cat-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);}
.cat-card::after{
  content:"";position:absolute;right:-40px;bottom:-56px;width:150px;height:150px;border-radius:50%;
  background:rgba(255,255,255,.09);
}
.cat-card h4{font-size:20px;font-weight:800;margin-bottom:10px;position:relative;z-index:1;}
.cat-card p{font-size:14px;line-height:1.78;color:#d6e5f9;position:relative;z-index:1;}
.cat-card span{
  display:inline-flex;align-items:center;gap:6px;margin-top:18px;
  font-size:13.5px;font-weight:700;color:#fff;position:relative;z-index:1;
  border-bottom:1px solid rgba(255,255,255,.55);padding-bottom:2px;
}

/* ============ 资讯区 ============ */
.news-layout{display:grid;grid-template-columns:1.55fr .85fr;gap:32px;align-items:start;}
.news-list{display:grid;gap:14px;}
.news-item{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:20px 22px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#bcd4f5;}
.news-meta{display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--muted);margin-bottom:8px;}
.news-meta b{color:var(--blue-700);background:var(--sky-100);padding:3px 10px;border-radius:999px;font-weight:700;}
.news-item h3{font-size:16.5px;font-weight:700;color:var(--blue-900);line-height:1.5;margin-bottom:7px;}
.news-item p{font-size:14px;line-height:1.75;color:var(--muted);}
.news-side{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:24px;box-shadow:var(--shadow-sm);
}
.news-side h4{
  font-size:15.5px;font-weight:800;color:var(--blue-900);margin-bottom:16px;
  padding-bottom:12px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:8px;
}
.news-side h4::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--blue-600);}
.side-item{
  display:block;padding:12px 0;border-bottom:1px dashed var(--line-strong);
  transition:color .2s ease;
}
.side-item:last-child{border-bottom:0;padding-bottom:0;}
.side-item:hover .side-title{color:var(--blue-600);}
.side-title{font-size:14px;font-weight:600;color:var(--ink-soft);line-height:1.65;transition:color .2s ease;}
.side-date{font-size:12px;color:var(--muted);margin-top:4px;}
.empty-tip{
  background:#fff;border:1px dashed var(--line-strong);border-radius:var(--radius);
  padding:28px;text-align:center;color:var(--muted);font-size:14px;
}
.more-link{display:inline-flex;align-items:center;gap:6px;margin-top:20px;font-size:14px;font-weight:700;color:var(--blue-700);}
.more-link:hover{color:var(--blue-600);}

/* ============ 保障条 ============ */
.assure-bar{
  display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
}
.assure-item{
  display:flex;align-items:center;gap:12px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 20px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.assure-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#bcd4f5;}
.assure-item svg{width:24px;height:24px;flex:0 0 24px;stroke:var(--blue-600);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.assure-item strong{display:block;font-size:14.5px;color:var(--blue-900);}
.assure-item small{display:block;font-size:12.5px;color:var(--muted);line-height:1.6;}

/* ============ 收口 CTA ============ */
.cta-final{
  position:relative;overflow:hidden;border-radius:22px;
  background:linear-gradient(120deg,#081a33,#12386e 55%,#1a56b8);
  color:#fff;padding:56px 48px;box-shadow:var(--shadow-lg);
}
.cta-final::after{
  content:"";position:absolute;right:-90px;top:-90px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(96,165,250,.42),transparent 70%);
}
.cta-final h3{font-size:28px;font-weight:800;line-height:1.4;margin-bottom:14px;position:relative;z-index:1;}
.cta-final p{font-size:15px;line-height:1.85;color:#cddff6;max-width:680px;position:relative;z-index:1;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;position:relative;z-index:1;}

/* ============ 底部固定转化条 ============ */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  background:rgba(8,26,51,.96);backdrop-filter:blur(10px);
  border-top:1px solid rgba(255,255,255,.14);
}
.sticky-inner{
  max-width:var(--maxw);margin:0 auto;padding:12px 20px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.sticky-text{font-size:13.5px;color:#c9dcf4;line-height:1.5;}
.sticky-text strong{color:#fff;display:block;font-size:14.5px;font-weight:700;}

/* ============ 页脚 ============ */
.site-footer{background:#081a33;color:#b8cbe4;padding:58px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-bottom:38px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .logo-mark{width:34px;height:34px;border-radius:10px;}
.footer-brand strong{font-size:16.5px;color:#fff;font-weight:800;letter-spacing:.5px;}
.footer-about{font-size:13.5px;line-height:1.85;color:#94aecb;max-width:400px;}
.footer-col h5{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.5px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{font-size:13.5px;color:#9db6d4;transition:color .2s ease;}
.footer-col ul li a:hover{color:#fff;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 26px;display:flex;flex-wrap:wrap;gap:10px;
  align-items:center;justify-content:space-between;
  font-size:12.5px;color:#7d97b8;
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .hero-title{font-size:34px;}
  .section-title{font-size:26px;}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:16px;}
  .stat-item:nth-child(2){border-right:0;}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px dashed var(--line-strong);padding-bottom:18px;}
  .stat-item:nth-child(3),.stat-item:nth-child(4){padding-top:14px;}
  .grid-3,.boss-grid,.bubble-wall,.matrix-grid,.cat-wall,.assure-bar{grid-template-columns:repeat(2,1fr);}
  .flow-layout{grid-template-columns:1fr;gap:30px;}
  .news-layout{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .cta-final{padding:42px 30px;}
  .cta-final h3{font-size:24px;}
}
@media (max-width:768px){
  body{padding-bottom:84px;}
  .header-inner{height:60px;}
  .main-nav{
    position:absolute;top:60px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:0 14px 26px rgba(16,38,74,.12);
    padding:12px 16px 16px;display:none;
  }
  .main-nav.is-open{display:flex;}
  .nav-link{padding:12px 14px;font-size:15px;}
  .nav-link.active::after{display:none;}
  .nav-toggle{display:grid;}
  .header-actions .btn-sm{padding:0 14px;font-size:13px;}
  .hero-inner{padding:52px 20px 48px;}
  .hero-title{font-size:28px;line-height:1.36;}
  .hero-sub{font-size:14.5px;}
  .section{padding:54px 0;}
  .section-title{font-size:23px;}
  .stats-strip{margin-top:-30px;}
  .grid-3,.grid-2,.boss-grid,.bubble-wall,.matrix-grid,.cat-wall,.assure-bar{grid-template-columns:1fr;}
  .compare-table th,.compare-table td{padding:13px 14px;font-size:13.5px;}
  .compare-table td:first-child{width:30%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .cta-final{padding:34px 22px;border-radius:18px;}
  .cta-final h3{font-size:21px;}
  .sticky-inner{padding:10px 16px;}
  .sticky-text{font-size:12.5px;}
  .sticky-text strong{font-size:13.5px;}
}
@media (max-width:520px){
  .hero-title{font-size:24px;}
  .countdown{padding:12px 16px;gap:12px;}
  .cd-num{font-size:19px;}
  .cd-item{min-width:44px;}
  .btn{height:44px;padding:0 18px;font-size:14px;}
  .hero-actions .btn{flex:1 1 100%;}
  .stat-num{font-size:25px;}
  .section-title{font-size:21px;}
  .faq-a{padding-left:0;}
  .sticky-inner .btn{height:40px;padding:0 14px;font-size:13.5px;}
}

/* roulang page: article */
:root{
 --blue-900:#081a33;
 --blue-800:#0f2c52;
 --blue-700:#1746b6;
 --blue-600:#2563eb;
 --blue-500:#3b82f6;
 --sky-100:#e6f0ff;
 --sky-50:#f4f8ff;
 --ink:#0f1b2d;
 --ink-soft:#33455f;
 --muted:#5f7191;
 --line:#e3ebf7;
 --line-strong:#cfdcf0;
 --card:#ffffff;
 --radius-lg:16px;
 --radius:12px;
 --radius-sm:8px;
 --shadow-sm:0 1px 2px rgba(16,38,74,.05),0 6px 18px rgba(16,38,74,.06);
 --shadow-md:0 12px 32px rgba(16,38,74,.10);
 --shadow-lg:0 22px 54px rgba(16,38,74,.18);
 --maxw:1180px;
}
*,*::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",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
 font-size:15px;
 line-height:1.78;
 color:var(--ink);
 background:#ffffff;
 padding-bottom:78px;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
p{margin:0 0 14px;}
h1,h2,h3,h4,h5{margin:0;font-weight:800;letter-spacing:.4px;color:var(--ink);}
ul{margin:0;padding:0;list-style:none;}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px;}

/* ============ 按钮 ============ */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 height:46px;padding:0 24px;border-radius:var(--radius-sm);
 font-size:15px;font-weight:600;letter-spacing:.5px;
 border:1px solid transparent;cursor:pointer;
 transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
 white-space:nowrap;
}
.btn:focus-visible{outline:3px solid rgba(59,130,246,.55);outline-offset:2px;}
.btn-primary{background:linear-gradient(180deg,#2f74f5,#1b52d4);color:#fff;box-shadow:0 8px 20px rgba(31,90,214,.32);}
.btn-primary:hover{background:linear-gradient(180deg,#2563eb,#1445b8);transform:translateY(-2px);box-shadow:0 14px 28px rgba(31,90,214,.38);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:rgba(255,255,255,.10);color:#fff;border-color:rgba(255,255,255,.55);backdrop-filter:blur(4px);}
.btn-ghost:hover{background:rgba(255,255,255,.22);border-color:#fff;transform:translateY(-2px);}
.btn-outline{background:#fff;color:var(--blue-700);border-color:var(--line-strong);}
.btn-outline:hover{border-color:var(--blue-500);color:var(--blue-600);transform:translateY(-2px);box-shadow:var(--shadow-sm);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}

/* ============ 头部导航 ============ */
.site-header{
 position:sticky;top:0;z-index:80;
 background:rgba(255,255,255,.92);
 backdrop-filter:saturate(180%) blur(12px);
 border-bottom:1px solid var(--line);
 transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 22px rgba(16,38,74,.10);background:rgba(255,255,255,.97);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px;gap:18px;}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
 width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
 background:linear-gradient(140deg,#2f74f5,#0f2c52);
 box-shadow:0 6px 16px rgba(23,70,182,.30);
}
.logo-mark svg{width:20px;height:20px;fill:#fff;}
.logo-text{font-size:17px;font-weight:800;letter-spacing:.5px;color:var(--blue-900);line-height:1.2;}
.logo-text small{display:block;font-size:10px;font-weight:500;color:var(--muted);letter-spacing:2px;margin-top:2px;}
.main-nav{display:flex;align-items:center;gap:4px;}
.nav-link{
 position:relative;display:inline-block;padding:8px 14px;border-radius:var(--radius-sm);
 font-size:14.5px;font-weight:600;color:var(--ink-soft);
 transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--blue-600);background:var(--sky-50);}
.nav-link.active{color:var(--blue-700);background:var(--sky-100);}
.nav-link.active::after{
 content:"";position:absolute;left:50%;bottom:-2px;transform:translateX(-50%);
 width:18px;height:3px;border-radius:2px;background:var(--blue-600);
}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
 display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line-strong);
 background:#fff;cursor:pointer;padding:0;place-items:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--blue-900);border-radius:2px;margin:3px auto;transition:.22s;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg);}

/* ============ 文章首屏 KV ============ */
.article-hero{position:relative;overflow:hidden;background:var(--blue-900);color:#fff;}
.article-hero-bg{position:absolute;inset:0;z-index:0;}
.article-hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.34;transform:scale(1.05);}
.article-hero-bg::after{
 content:"";position:absolute;inset:0;
 background:linear-gradient(108deg,rgba(6,22,44,.96) 0%,rgba(9,32,66,.88) 50%,rgba(13,48,98,.66) 100%);
}
.article-hero-inner{position:relative;z-index:1;padding:34px 20px 58px;max-width:var(--maxw);margin:0 auto;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:#9fbbe3;margin-bottom:22px;}
.breadcrumb a{color:#cfe2ff;transition:color .2s ease;}
.breadcrumb a:hover{color:#fff;text-decoration:underline;}
.breadcrumb .sep{opacity:.5;}
.article-hero-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.9fr);gap:44px;align-items:center;}
.hero-badge{
 display:inline-flex;align-items:center;gap:8px;
 padding:6px 14px;border-radius:999px;font-size:13px;font-weight:600;letter-spacing:.5px;
 background:rgba(59,130,246,.22);border:1px solid rgba(120,170,255,.45);color:#cfe2ff;
}
.hero-badge i{width:6px;height:6px;border-radius:50%;background:#5eead4;display:inline-block;box-shadow:0 0 0 4px rgba(94,234,212,.22);}
.article-title{
 font-size:clamp(26px,3.4vw,40px);line-height:1.32;font-weight:800;letter-spacing:.8px;
 margin:20px 0 16px;color:#fff;word-break:break-word;
}
.article-lead{font-size:15.5px;line-height:1.85;color:#d3e2f7;max-width:640px;}
.meta-row{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:22px;font-size:13.5px;color:#a9c5e8;}
.meta-row span{display:inline-flex;align-items:center;gap:7px;}
.meta-row svg{width:15px;height:15px;stroke:#7fb2ff;fill:none;stroke-width:1.8;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.chip{
 display:inline-flex;align-items:center;gap:6px;
 padding:7px 15px;border-radius:999px;font-size:13px;font-weight:600;
 color:#dbe9ff;background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.20);
 transition:.2s;
}
.chip:hover{background:rgba(255,255,255,.18);border-color:rgba(255,255,255,.42);color:#fff;}
.hero-cover{
 position:relative;margin:0;border-radius:var(--radius-lg);overflow:hidden;
 border:1px solid rgba(255,255,255,.22);
 box-shadow:0 26px 60px rgba(2,12,30,.45);
 aspect-ratio:16/11;
}
.hero-cover img{width:100%;height:100%;object-fit:cover;}
.hero-cover figcaption{
 position:absolute;left:0;right:0;bottom:0;padding:26px 18px 14px;
 font-size:12.5px;color:#dbe9ff;
 background:linear-gradient(180deg,rgba(4,16,34,0),rgba(4,16,34,.82));
}

/* ============ 通用板块 ============ */
.section{padding:66px 0;}
.section-alt{background:var(--sky-50);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:740px;margin-bottom:34px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
 display:inline-flex;align-items:center;gap:8px;
 font-size:12.5px;font-weight:700;letter-spacing:2px;color:var(--blue-600);
 text-transform:uppercase;margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:3px;border-radius:2px;background:linear-gradient(90deg,#2f74f5,#7fb2ff);}
.section-title{font-size:clamp(22px,2.4vw,29px);line-height:1.42;letter-spacing:.6px;}
.section-desc{margin-top:12px;font-size:15px;color:var(--ink-soft);line-height:1.85;}

/* ============ 正文排版 ============ */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:36px;align-items:start;}
.article-paper{
 background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
 box-shadow:var(--shadow-sm);padding:38px 40px 30px;
}
.article-body{font-size:16px;line-height:1.9;color:var(--ink-soft);}
.article-body h2{
 font-size:22px;line-height:1.5;color:var(--ink);margin:34px 0 14px;padding-left:14px;
 border-left:4px solid var(--blue-600);letter-spacing:.5px;
}
.article-body h3{font-size:18px;color:var(--blue-800);margin:26px 0 10px;}
.article-body h4{font-size:16px;color:var(--blue-800);margin:20px 0 8px;}
.article-body p{margin:0 0 16px;}
.article-body strong{color:var(--blue-700);font-weight:700;}
.article-body a{color:var(--blue-600);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--blue-700);}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px;}
.article-body ul li,.article-body ol li{margin-bottom:9px;list-style:disc;}
.article-body ol li{list-style:decimal;}
.article-body img{border-radius:var(--radius);margin:20px 0;box-shadow:var(--shadow-sm);}
.article-body blockquote{
 margin:22px 0;padding:16px 20px;border-left:4px solid var(--blue-500);
 background:var(--sky-50);border-radius:0 var(--radius) var(--radius) 0;color:var(--ink-soft);
}
.article-body table{width:100%;border-collapse:collapse;margin:20px 0;font-size:14.5px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left;}
.article-body th{background:var(--sky-50);color:var(--blue-800);font-weight:700;}
.article-empty{text-align:center;padding:40px 10px;}
.article-empty h2{font-size:22px;color:var(--ink);margin-bottom:12px;}
.article-empty p{color:var(--muted);margin-bottom:22px;}

/* ============ 侧栏 ============ */
.article-aside{position:sticky;top:88px;display:grid;gap:18px;}
.aside-card{
 background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-sm);padding:22px;
}
.aside-card h4{font-size:15.5px;color:var(--blue-900);margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.aside-card h4 svg{width:17px;height:17px;stroke:var(--blue-600);fill:none;stroke-width:1.8;}
.aside-list li{
 display:flex;gap:10px;font-size:14px;color:var(--ink-soft);line-height:1.7;
 padding:9px 0;border-bottom:1px dashed var(--line);
}
.aside-list li:last-child{border-bottom:0;padding-bottom:0;}
.aside-list b{color:var(--blue-700);font-weight:700;flex:0 0 auto;}
.aside-note{font-size:13.5px;color:var(--muted);line-height:1.8;margin:0;}
.aside-card .btn{width:100%;margin-top:14px;}

/* ============ 卡片网格 ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.card-grid.two{grid-template-columns:repeat(2,minmax(0,1fr));}
.info-card{
 background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
 padding:26px 24px;box-shadow:var(--shadow-sm);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.card-icon{
 width:44px;height:44px;border-radius:12px;display:grid;place-items:center;margin-bottom:16px;
 background:var(--sky-100);border:1px solid #d5e5ff;
}
.card-icon svg{width:22px;height:22px;stroke:var(--blue-600);fill:none;stroke-width:1.8;}
.info-card h3{font-size:17.5px;margin-bottom:10px;color:var(--blue-900);}
.info-card p{font-size:14.5px;color:var(--ink-soft);line-height:1.8;margin:0 0 14px;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
 display:inline-block;padding:4px 11px;border-radius:999px;font-size:12.5px;font-weight:600;
 color:var(--blue-700);background:var(--sky-50);border:1px solid var(--line-strong);
}
.tag.ghost{color:var(--muted);background:#fff;border-color:var(--line);}

/* ============ 频道矩阵 ============ */
.channel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.channel-card{
 position:relative;display:block;overflow:hidden;
 background:linear-gradient(165deg,#ffffff,#f5f9ff);
 border:1px solid var(--line);border-radius:var(--radius-lg);
 padding:28px 24px 24px;box-shadow:var(--shadow-sm);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.channel-card::after{
 content:"";position:absolute;right:-40px;top:-40px;width:120px;height:120px;border-radius:50%;
 background:radial-gradient(circle,rgba(59,130,246,.16),rgba(59,130,246,0));
}
.channel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--blue-500);}
.channel-card:hover .channel-more{color:var(--blue-600);gap:10px;}
.channel-no{font-size:12.5px;font-weight:800;letter-spacing:2px;color:var(--blue-500);}
.channel-card h3{font-size:19px;margin:10px 0 10px;color:var(--blue-900);}
.channel-card p{font-size:14.5px;color:var(--ink-soft);line-height:1.8;margin:0 0 16px;}
.channel-more{
 display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--blue-700);
 transition:gap .2s ease,color .2s ease;
}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:14px;max-width:900px;margin:0 auto;}
.faq-item{
 background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-sm);overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:var(--line-strong);box-shadow:var(--shadow-md);}
.faq-item summary{
 display:flex;align-items:center;justify-content:space-between;gap:16px;
 padding:18px 22px;font-size:16px;font-weight:700;color:var(--blue-900);
 cursor:pointer;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:focus-visible{outline:3px solid rgba(59,130,246,.45);outline-offset:-3px;}
.faq-item summary::after{
 content:"+";flex:0 0 auto;width:26px;height:26px;border-radius:8px;
 display:grid;place-items:center;font-size:18px;line-height:1;color:var(--blue-600);
 background:var(--sky-50);border:1px solid var(--line-strong);transition:.2s;
}
.faq-item[open] summary::after{content:"–";background:var(--blue-600);color:#fff;border-color:var(--blue-600);}
.faq-answer{padding:0 22px 20px;font-size:14.8px;color:var(--ink-soft);line-height:1.85;}

/* ============ 收口行动区 ============ */
.cta-band{
 position:relative;overflow:hidden;border-radius:var(--radius-lg);
 background:linear-gradient(120deg,#0b2a55,#1746b6 62%,#2563eb);
 color:#fff;padding:48px 44px;box-shadow:var(--shadow-lg);
 display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,.8fr);gap:30px;align-items:center;
}
.cta-band::after{
 content:"";position:absolute;right:-90px;bottom:-120px;width:320px;height:320px;border-radius:50%;
 background:radial-gradient(circle,rgba(127,178,255,.32),rgba(127,178,255,0));
}
.cta-band h2{font-size:clamp(21px,2.3vw,27px);color:#fff;line-height:1.45;margin-bottom:12px;}
.cta-band p{color:#cfe2ff;font-size:14.8px;margin:0;line-height:1.85;}
.cta-actions{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;}

/* ============ 底部固定转化条 ============ */
.sticky-cta{
 position:fixed;left:0;right:0;bottom:0;z-index:90;
 background:rgba(255,255,255,.96);backdrop-filter:blur(10px);
 border-top:1px solid var(--line);box-shadow:0 -8px 24px rgba(16,38,74,.10);
}
.sticky-cta .inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:78px;}
.sticky-cta .txt{font-size:14.5px;color:var(--ink-soft);display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.sticky-cta .txt strong{color:var(--blue-900);font-size:15.5px;}
.sticky-cta .dot{width:8px;height:8px;border-radius:50%;background:#22c55e;box-shadow:0 0 0 4px rgba(34,197,94,.16);}

/* ============ 页脚 ============ */
.site-footer{background:var(--blue-900);color:#c3d6ef;margin-top:70px;padding:56px 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:38px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand strong{font-size:16.5px;color:#fff;letter-spacing:.6px;}
.footer-about{font-size:14px;line-height:1.85;color:#9db6d6;margin:0;max-width:420px;}
.footer-col h5{font-size:14.5px;color:#fff;margin-bottom:16px;letter-spacing:1px;}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul li a{font-size:14px;color:#a9c5e8;transition:color .2s ease,padding-left .2s ease;}
.footer-col ul li a:hover{color:#fff;padding-left:4px;}
.footer-bottom{
 margin-top:38px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
 display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
 font-size:13px;color:#8aa6c9;
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
 .article-hero-grid{grid-template-columns:1fr;gap:28px;}
 .hero-cover{max-width:560px;aspect-ratio:16/9;}
 .article-layout{grid-template-columns:1fr;}
 .article-aside{position:static;grid-template-columns:repeat(2,minmax(0,1fr));}
 .card-grid,.channel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
 .cta-band{grid-template-columns:1fr;padding:38px 30px;}
 .cta-actions{justify-content:flex-start;}
 .article-paper{padding:32px 28px 24px;}
}
@media (max-width:900px){
 .main-nav{
   position:absolute;top:64px;left:0;right:0;display:none;flex-direction:column;align-items:stretch;gap:0;
   background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow-md);padding:10px 18px 16px;
 }
 .main-nav.is-open{display:flex;}
 .nav-link{padding:13px 10px;border-radius:var(--radius-sm);}
 .nav-link.active::after{display:none;}
 .nav-toggle{display:grid;}
 .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:768px){
 .section{padding:52px 0;}
 .article-hero-inner{padding:26px 20px 44px;}
 .article-paper{padding:26px 20px 18px;}
 .article-body{font-size:15.5px;}
 .article-body h2{font-size:20px;}
 .card-grid,.card-grid.two,.channel-grid{grid-template-columns:1fr;}
 .article-aside{grid-template-columns:1fr;}
 .sticky-cta .inner{height:auto;padding:12px 0;flex-wrap:wrap;justify-content:center;}
 .sticky-cta .txt{font-size:13.5px;justify-content:center;text-align:center;}
 .sticky-cta .btn{width:100%;}
 .footer-grid{grid-template-columns:1fr;gap:28px;}
 .footer-bottom{flex-direction:column;}
}
@media (max-width:520px){
 .header-inner{gap:10px;}
 .header-actions .btn-sm{display:none;}
 .logo-text{font-size:15.5px;}
 .logo-text small{letter-spacing:1px;}
 .btn{height:44px;padding:0 18px;}
 .chip{font-size:12.5px;padding:6px 12px;}
 .cta-band{padding:30px 22px;}
 .hero-cover{aspect-ratio:4/3;}
}

/* roulang page: category1 */
:root{
  --blue-900:#081a33;
  --blue-800:#0f2c52;
  --blue-700:#1746b6;
  --blue-600:#2563eb;
  --blue-500:#3b82f6;
  --sky-100:#e6f0ff;
  --sky-50:#f4f8ff;
  --ink:#0f1b2d;
  --ink-soft:#33455f;
  --muted:#5f7191;
  --line:#e3ebf7;
  --line-strong:#cfdcf0;
  --card:#ffffff;
  --radius-lg:16px;
  --radius:12px;
  --radius-sm:8px;
  --shadow-sm:0 1px 2px rgba(16,38,74,.05),0 6px 18px rgba(16,38,74,.06);
  --shadow-md:0 12px 32px rgba(16,38,74,.10);
  --shadow-lg:0 22px 54px rgba(16,38,74,.18);
  --maxw:1180px;
}
*,*::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",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:15px;
  line-height:1.75;
  color:var(--ink);
  background:#ffffff;
  padding-bottom:76px;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4,h5,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
body .container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px;}
::selection{background:rgba(59,130,246,.22);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;letter-spacing:.5px;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn:focus-visible{outline:3px solid rgba(59,130,246,.55);outline-offset:2px;}
.btn-primary{background:linear-gradient(180deg,#2f74f5,#1b52d4);color:#fff;box-shadow:0 8px 20px rgba(31,90,214,.32);}
.btn-primary:hover{background:linear-gradient(180deg,#2563eb,#1445b8);transform:translateY(-2px);box-shadow:0 14px 28px rgba(31,90,214,.38);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:rgba(255,255,255,.10);color:#fff;border-color:rgba(255,255,255,.55);backdrop-filter:blur(4px);}
.btn-ghost:hover{background:rgba(255,255,255,.22);border-color:#fff;transform:translateY(-2px);}
.btn-outline{background:#fff;color:var(--blue-700);border-color:var(--line-strong);}
.btn-outline:hover{border-color:var(--blue-500);color:var(--blue-600);transform:translateY(-2px);box-shadow:var(--shadow-sm);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 22px rgba(16,38,74,.10);background:rgba(255,255,255,.97);}
body .header-inner{display:flex;align-items:center;justify-content:space-between;height:64px;gap:18px;}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(140deg,#2f74f5,#0f2c52);
  box-shadow:0 6px 16px rgba(23,70,182,.30);
}
.logo-mark svg{width:20px;height:20px;fill:#fff;}
.logo-text{font-size:17px;font-weight:800;letter-spacing:.5px;color:var(--blue-900);line-height:1.2;}
.logo-text small{display:block;font-size:10px;font-weight:500;color:var(--muted);letter-spacing:2px;margin-top:2px;}
.main-nav{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;display:inline-block;padding:8px 14px;border-radius:var(--radius-sm);
  font-size:14.5px;font-weight:600;color:var(--ink-soft);
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--blue-600);background:var(--sky-50);}
.nav-link.active{color:var(--blue-700);background:var(--sky-100);}
.nav-link.active::after{
  content:"";position:absolute;left:50%;bottom:-2px;transform:translateX(-50%);
  width:18px;height:3px;border-radius:2px;background:var(--blue-600);
}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line-strong);
  background:#fff;cursor:pointer;padding:0;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--blue-900);border-radius:2px;margin:3px auto;transition:.22s;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg);}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;background:var(--blue-900);color:#fff;}
.hero-bg{position:absolute;inset:0;z-index:0;}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.42;transform:scale(1.04);}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(6,22,44,.95) 0%,rgba(9,32,66,.88) 46%,rgba(10,40,86,.66) 100%);
}
.hero-inner{
  position:relative;z-index:1;max-width:var(--maxw);margin:0 auto;
  padding:64px 20px 68px;
  display:grid;grid-template-columns:1.08fr .92fr;gap:52px;align-items:center;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;font-size:13px;font-weight:600;letter-spacing:.5px;
  background:rgba(59,130,246,.22);border:1px solid rgba(120,170,255,.45);color:#cfe2ff;
}
.hero-badge i{width:6px;height:6px;border-radius:50%;background:#5eead4;display:inline-block;box-shadow:0 0 0 4px rgba(94,234,212,.22);}
.hero-title{
  font-size:40px;line-height:1.3;font-weight:800;letter-spacing:.8px;
  margin:20px 0 16px;color:#fff;
}
.hero-title em{font-style:normal;color:#7fb2ff;}
.hero-sub{font-size:15.5px;line-height:1.85;color:#d3e2f7;max-width:640px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 15px;border-radius:999px;font-size:13px;font-weight:600;
  color:#dbe9ff;background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.20);
  transition:.2s;
}
.chip:hover{background:rgba(255,255,255,.18);border-color:rgba(255,255,255,.42);color:#fff;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}

/* 优惠券墙 */
.coupon-wall{position:relative;}
.coupon-card{
  position:relative;background:#fff;color:var(--ink);border-radius:18px;
  padding:26px 26px 22px;box-shadow:var(--shadow-lg);
  border:1px solid rgba(207,220,240,.9);
  overflow:hidden;
}
.coupon-card::before,
.coupon-card::after{
  content:"";position:absolute;width:26px;height:26px;border-radius:50%;
  background:#0d2450;left:-13px;top:50%;transform:translateY(-50%);
}
.coupon-card::after{left:auto;right:-13px;}
.coupon-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px;}
.coupon-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:6px;font-size:12.5px;font-weight:700;letter-spacing:1px;
  color:#fff;background:linear-gradient(135deg,#2f74f5,#1746b6);
}
.coupon-code{font-size:12px;letter-spacing:1.6px;color:var(--muted);font-weight:600;}
.coupon-card h3{font-size:20px;font-weight:800;color:var(--blue-900);letter-spacing:.4px;line-height:1.45;}
.coupon-list{margin:16px 0 4px;display:grid;gap:9px;}
.coupon-list li{
  display:flex;align-items:flex-start;gap:9px;
  font-size:14px;color:var(--ink-soft);line-height:1.6;
}
.coupon-list li::before{
  content:"";flex:0 0 auto;width:7px;height:7px;margin-top:8px;border-radius:50%;
  background:var(--blue-500);box-shadow:0 0 0 3px rgba(59,130,246,.16);
}
.coupon-btn{width:100%;margin-top:18px;}
.coupon-note{margin-top:12px;font-size:12.5px;color:var(--muted);text-align:center;}
.coupon-float{
  position:absolute;right:-6px;top:-18px;
  background:linear-gradient(135deg,#2f74f5,#0f2c52);color:#fff;
  font-size:12px;font-weight:700;letter-spacing:1px;
  padding:7px 14px;border-radius:999px;box-shadow:0 10px 24px rgba(23,70,182,.35);
}

/* ============ 通用板块 ============ */
.section{padding:74px 0;}
.section-alt{background:var(--sky-50);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;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:12.5px;font-weight:700;letter-spacing:2px;color:var(--blue-700);
  text-transform:uppercase;margin-bottom:12px;
}
.eyebrow::before{content:"";width:26px;height:3px;border-radius:2px;background:linear-gradient(90deg,#2f74f5,#8ab4ff);}
.section-head.center .eyebrow{justify-content:center;}
.section-title{font-size:29px;line-height:1.42;font-weight:800;letter-spacing:.5px;color:var(--blue-900);}
.section-desc{margin-top:14px;font-size:15px;line-height:1.85;color:var(--ink-soft);}

/* ============ 场景卡片 ============ */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px 24px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.card-icon{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:var(--sky-100);color:var(--blue-700);margin-bottom:16px;
}
.card-icon svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.card h3{font-size:17.5px;font-weight:700;color:var(--blue-900);letter-spacing:.3px;line-height:1.5;}
.card p{margin-top:10px;font-size:14.5px;line-height:1.8;color:var(--ink-soft);}
.card-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.tag{
  display:inline-block;padding:4px 11px;border-radius:999px;
  font-size:12px;font-weight:600;color:var(--blue-700);
  background:var(--sky-50);border:1px solid var(--line);
}

/* ============ 步骤流程 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step;}
.step{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px 22px 24px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;
  font-size:14px;font-weight:800;color:#fff;
  background:linear-gradient(140deg,#2f74f5,#1746b6);
  box-shadow:0 6px 16px rgba(23,70,182,.28);
  margin-bottom:14px;
}
.step h3{font-size:16px;font-weight:700;color:var(--blue-900);line-height:1.5;}
.step p{margin-top:9px;font-size:14px;line-height:1.8;color:var(--ink-soft);}
.step-time{
  display:inline-block;margin-top:14px;font-size:12.5px;font-weight:700;
  color:var(--blue-700);background:var(--sky-50);
  padding:4px 10px;border-radius:6px;border:1px solid var(--line);
}

/* ============ 图文叙事 ============ */
.split{display:grid;grid-template-columns:1fr 1fr;gap:46px;align-items:center;}
.split-media{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md);border:1px solid var(--line);}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s ease;}
.split-media:hover img{transform:scale(1.04);}
.split-body h2{font-size:27px;line-height:1.45;font-weight:800;color:var(--blue-900);letter-spacing:.4px;}
.split-body p{margin-top:16px;font-size:15px;line-height:1.85;color:var(--ink-soft);}
.check-list{margin-top:22px;display:grid;gap:13px;}
.check-list li{display:flex;gap:11px;align-items:flex-start;font-size:14.5px;line-height:1.75;color:var(--ink-soft);}
.check-list li svg{
  flex:0 0 auto;width:20px;height:20px;margin-top:3px;stroke:var(--blue-600);
  fill:none;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round;
}

/* ============ 数据条 ============ */
.metric-band{
  background:linear-gradient(120deg,#0b2244,#123a75 58%,#1746b6);
  border-radius:var(--radius-lg);padding:38px 32px;color:#fff;
  box-shadow:var(--shadow-md);
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
}
.metric-item{text-align:center;border-right:1px solid rgba(255,255,255,.16);padding:0 10px;}
.metric-item:last-child{border-right:0;}
.metric-num{font-size:30px;font-weight:800;letter-spacing:.5px;line-height:1.2;color:#fff;}
.metric-num span{font-size:16px;font-weight:700;margin-left:2px;color:#9cc4ff;}
.metric-label{margin-top:8px;font-size:13px;color:#c6d9f5;letter-spacing:.5px;}

/* ============ 对比 ============ */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:22px;}
.compare-col{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:28px 26px;box-shadow:var(--shadow-sm);
}
.compare-col.bad{border-top:3px solid #d98a8a;}
.compare-col.good{border-top:3px solid var(--blue-600);box-shadow:var(--shadow-md);}
.compare-col h3{font-size:17px;font-weight:800;color:var(--blue-900);display:flex;align-items:center;gap:9px;}
.compare-col h3 em{font-style:normal;font-size:12px;font-weight:700;padding:3px 9px;border-radius:999px;}
.compare-col.bad h3 em{background:#fdeeee;color:#b34a4a;}
.compare-col.good h3 em{background:var(--sky-100);color:var(--blue-700);}
.compare-col ul{margin-top:18px;display:grid;gap:13px;}
.compare-col li{font-size:14.5px;line-height:1.75;color:var(--ink-soft);padding-left:16px;position:relative;}
.compare-col li::before{
  content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;
  background:var(--line-strong);
}
.compare-col.good li::before{background:var(--blue-500);}

/* ============ 资讯列表 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.news-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.news-card:focus-visible{outline:3px solid rgba(59,130,246,.55);outline-offset:3px;}
.news-cat{
  align-self:flex-start;font-size:12px;font-weight:700;letter-spacing:.6px;
  color:var(--blue-700);background:var(--sky-50);border:1px solid var(--line);
  padding:4px 11px;border-radius:999px;margin-bottom:14px;
}
.news-card h3{font-size:16.5px;font-weight:700;line-height:1.6;color:var(--blue-900);}
.news-card p{margin-top:11px;font-size:14px;line-height:1.8;color:var(--ink-soft);flex:1 1 auto;}
.news-time{margin-top:16px;font-size:12.5px;color:var(--muted);letter-spacing:.4px;}
.news-empty{
  padding:36px 26px;border:1px dashed var(--line-strong);border-radius:var(--radius-lg);
  color:var(--muted);font-size:14.5px;text-align:center;background:#fff;
}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:14px;max-width:900px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:var(--line-strong);box-shadow:var(--shadow-md);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 24px;
  font-size:15.5px;font-weight:700;color:var(--blue-900);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex:0 0 auto;width:26px;height:26px;border-radius:8px;
  display:grid;place-items:center;font-size:18px;font-weight:600;
  color:var(--blue-700);background:var(--sky-100);transition:.2s;
}
.faq-item[open] summary::after{content:"−";background:var(--blue-600);color:#fff;}
.faq-body{padding:0 24px 22px;font-size:14.5px;line-height:1.85;color:var(--ink-soft);}

/* ============ CTA 收口 ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  background:linear-gradient(120deg,#0b2244,#15417f 55%,#1f5ad6);
  color:#fff;padding:52px 44px;
  box-shadow:var(--shadow-lg);
  display:grid;grid-template-columns:1.4fr .6fr;gap:32px;align-items:center;
}
.cta-band::after{
  content:"";position:absolute;right:-90px;top:-90px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(122,174,255,.35),rgba(122,174,255,0) 70%);
}
.cta-band h2{font-size:27px;font-weight:800;line-height:1.45;letter-spacing:.4px;}
.cta-band p{margin-top:13px;font-size:14.5px;line-height:1.85;color:#c9dcf7;max-width:640px;}
.cta-actions{display:flex;flex-direction:column;gap:12px;position:relative;z-index:1;}
.assure{
  display:flex;flex-wrap:wrap;gap:22px;margin-top:26px;
}
.assure span{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;color:#c9dcf7;}
.assure span svg{width:16px;height:16px;stroke:#7fb2ff;fill:none;stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round;}

/* ============ 底部固定条 ============ */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(180%) blur(10px);
  border-top:1px solid var(--line);
  box-shadow:0 -8px 24px rgba(16,38,74,.08);
}
body .sticky-inner{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:64px;padding-top:10px;padding-bottom:10px;
}
.sticky-inner p{font-size:14px;color:var(--ink-soft);}
.sticky-inner p strong{color:var(--blue-700);font-weight:800;}

/* ============ 页脚 ============ */
.site-footer{background:var(--blue-900);color:#c3d4ec;padding:58px 0 26px;margin-top:0;}
body .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:800;letter-spacing:.5px;}
.footer-about{margin-top:16px;font-size:14px;line-height:1.85;color:#9db4d2;max-width:430px;}
.footer-col h5{font-size:14px;font-weight:700;color:#fff;letter-spacing:1.2px;margin-bottom:16px;}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{font-size:14px;color:#a9c0dd;transition:color .2s ease;}
.footer-col a:hover{color:#7fb2ff;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8aa2c2;
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:38px;padding:52px 20px 56px;}
  .hero-title{font-size:34px;}
  .scene-grid{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .metric-band{grid-template-columns:repeat(2,1fr);gap:28px;}
  .metric-item:nth-child(2){border-right:0;}
  .split{grid-template-columns:1fr;gap:30px;}
  .cta-band{grid-template-columns:1fr;padding:40px 30px;}
  body .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-col:first-child{grid-column:1 / -1;}
}
@media (max-width:768px){
  .main-nav{
    position:absolute;top:64px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:2px;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:0 16px 32px rgba(16,38,74,.12);
    padding:12px 16px 18px;display:none;
  }
  .main-nav.is-open{display:flex;}
  .nav-link{padding:12px 14px;font-size:15px;}
  .nav-link.active::after{display:none;}
  .nav-toggle{display:block;}
  .header-actions .btn-sm{display:none;}
  .section{padding:56px 0;}
  .section-title{font-size:24px;}
  .hero-title{font-size:29px;letter-spacing:.4px;}
  .hero-sub{font-size:14.5px;}
  .compare{grid-template-columns:1fr;}
  .cta-band h2{font-size:22px;}
  .sticky-inner p{font-size:13px;}
}
@media (max-width:520px){
  body{padding-bottom:72px;font-size:14.5px;}
  .scene-grid,.steps,.news-grid{grid-template-columns:1fr;}
  .metric-band{grid-template-columns:1fr;gap:22px;}
  .metric-item{border-right:0;border-bottom:1px solid rgba(255,255,255,.14);padding-bottom:18px;}
  .metric-item:last-child{border-bottom:0;padding-bottom:0;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .coupon-card{padding:22px 20px 18px;}
  .coupon-card h3{font-size:18px;}
  .sticky-inner{flex-direction:column;align-items:stretch;gap:8px;padding-top:8px;padding-bottom:8px;text-align:center;}
  .sticky-inner .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}

/* roulang page: category2 */
:root{
 --blue-900:#081a33;
 --blue-800:#0f2c52;
 --blue-700:#1746b6;
 --blue-600:#2563eb;
 --blue-500:#3b82f6;
 --sky-100:#e6f0ff;
 --sky-50:#f4f8ff;
 --ink:#0f1b2d;
 --ink-soft:#33455f;
 --muted:#5f7191;
 --line:#e3ebf7;
 --line-strong:#cfdcf0;
 --card:#ffffff;
 --radius-lg:16px;
 --radius:12px;
 --radius-sm:8px;
 --shadow-sm:0 1px 2px rgba(16,38,74,.05),0 6px 18px rgba(16,38,74,.06);
 --shadow-md:0 12px 32px rgba(16,38,74,.10);
 --shadow-lg:0 22px 54px rgba(16,38,74,.18);
 --maxw:1180px;
}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
html body{
 margin:0;
 font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
 font-size:15px;
 line-height:1.75;
 color:var(--ink);
 background:#ffffff;
 padding-bottom:76px;
}
*,*::before,*::after{box-sizing:border-box;}
img{max-width:100%;display:block;border:0;height:auto;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4,h5,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px;}
/* ============ 按钮 ============ */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 height:46px;padding:0 24px;border-radius:var(--radius-sm);
 font-size:15px;font-weight:600;letter-spacing:.5px;
 border:1px solid transparent;cursor:pointer;
 transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
 white-space:nowrap;
}
.btn:focus-visible{outline:3px solid rgba(59,130,246,.55);outline-offset:2px;}
.btn-primary{background:linear-gradient(180deg,#2f74f5,#1b52d4);color:#fff;box-shadow:0 8px 20px rgba(31,90,214,.32);}
.btn-primary:hover{background:linear-gradient(180deg,#2563eb,#1445b8);transform:translateY(-2px);box-shadow:0 14px 28px rgba(31,90,214,.38);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:rgba(255,255,255,.10);color:#fff;border-color:rgba(255,255,255,.55);backdrop-filter:blur(4px);}
.btn-ghost:hover{background:rgba(255,255,255,.22);border-color:#fff;transform:translateY(-2px);}
.btn-outline{background:#fff;color:var(--blue-700);border-color:var(--line-strong);}
.btn-outline:hover{border-color:var(--blue-500);color:var(--blue-600);transform:translateY(-2px);box-shadow:var(--shadow-sm);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
/* ============ 头部导航 ============ */
.site-header{
 position:sticky;top:0;z-index:80;
 background:rgba(255,255,255,.92);
 backdrop-filter:saturate(180%) blur(12px);
 border-bottom:1px solid var(--line);
 transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 22px rgba(16,38,74,.10);background:rgba(255,255,255,.97);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px;gap:18px;}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
 width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
 background:linear-gradient(140deg,#2f74f5,#0f2c52);
 box-shadow:0 6px 16px rgba(23,70,182,.30);
}
.logo-mark svg{width:20px;height:20px;fill:#fff;}
.logo-text{font-size:17px;font-weight:800;letter-spacing:.5px;color:var(--blue-900);line-height:1.2;}
.logo-text small{display:block;font-size:10px;font-weight:500;color:var(--muted);letter-spacing:2px;margin-top:2px;}
.main-nav{display:flex;align-items:center;gap:4px;}
.nav-link{
 position:relative;display:inline-block;padding:8px 14px;border-radius:var(--radius-sm);
 font-size:14.5px;font-weight:600;color:var(--ink-soft);
 transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--blue-600);background:var(--sky-50);}
.nav-link.active{color:var(--blue-700);background:var(--sky-100);}
.nav-link.active::after{
 content:"";position:absolute;left:50%;bottom:-2px;transform:translateX(-50%);
 width:18px;height:3px;border-radius:2px;background:var(--blue-600);
}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
 display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line-strong);
 background:#fff;cursor:pointer;padding:0;place-items:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--blue-900);border-radius:2px;margin:3px auto;transition:.22s;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg);}
/* ============ Hero 斜切 ============ */
.hero{
 position:relative;overflow:hidden;color:#fff;
 background:linear-gradient(135deg,#0b2a54 0%,#0f2c52 55%,#081a33 100%);
 clip-path:polygon(0 0,100% 0,100% calc(100% - 54px),0 100%);
}
.hero-bg{position:absolute;inset:0;z-index:0;}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.36;}
.hero-bg::after{
 content:"";position:absolute;inset:0;
 background:linear-gradient(110deg,rgba(6,22,44,.96) 0%,rgba(9,32,66,.86) 48%,rgba(12,44,92,.60) 100%);
}
.hero-inner{position:relative;z-index:2;padding:62px 0 112px;}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:48px;align-items:center;}
.hero-badge{
 display:inline-flex;align-items:center;gap:8px;
 padding:6px 14px;border-radius:999px;font-size:13px;font-weight:600;letter-spacing:.5px;
 background:rgba(59,130,246,.22);border:1px solid rgba(120,170,255,.45);color:#cfe2ff;
}
.hero-badge i{width:6px;height:6px;border-radius:50%;background:#5eead4;display:inline-block;box-shadow:0 0 0 4px rgba(94,234,212,.22);}
.hero-title{
 font-size:clamp(30px,3.6vw,42px);line-height:1.28;font-weight:800;letter-spacing:1px;
 margin:22px 0 18px;color:#fff;
}
.hero-title em{font-style:normal;color:#7fb2ff;}
.hero-sub{font-size:15.5px;line-height:1.85;color:#d3e2f7;max-width:640px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.chip{
 display:inline-flex;align-items:center;gap:6px;
 padding:7px 15px;border-radius:999px;font-size:13px;font-weight:600;
 color:#dbe9ff;background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.20);
 transition:.2s;
}
.chip:hover{background:rgba(255,255,255,.18);border-color:rgba(255,255,255,.42);color:#fff;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-panel{
 background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.22);
 border-radius:var(--radius-lg);padding:24px;backdrop-filter:blur(8px);
 box-shadow:0 20px 40px rgba(3,14,32,.35);
}
.panel-head{font-size:12.5px;font-weight:700;letter-spacing:2px;color:#9dc2ff;margin-bottom:14px;}
.panel-list li{
 display:flex;align-items:baseline;justify-content:space-between;gap:12px;
 padding:11px 0;border-bottom:1px dashed rgba(255,255,255,.18);
 font-size:14px;color:#d7e6fb;
}
.panel-list li:last-child{border-bottom:0;}
.panel-list strong{font-size:19px;font-weight:800;color:#fff;letter-spacing:.5px;}
.panel-note{margin-top:14px;font-size:12.5px;color:#9fb6d6;line-height:1.7;}
/* ============ 通用板块 ============ */
.section{padding:76px 0;}
.section-alt{background:var(--sky-50);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:40px;}
.eyebrow{
 display:inline-flex;align-items:center;gap:8px;
 font-size:12.5px;font-weight:700;letter-spacing:2px;color:var(--blue-600);
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--blue-500);}
.section-title{font-size:clamp(22px,2.4vw,30px);font-weight:800;color:var(--blue-900);letter-spacing:.5px;line-height:1.38;margin:12px 0 12px;}
.section-sub{color:var(--ink-soft);font-size:15px;max-width:740px;}
.split{display:grid;grid-template-columns:minmax(0,.82fr) minmax(0,1.18fr);gap:44px;align-items:start;}
.split-aside{position:sticky;top:88px;}
.tag{
 display:inline-flex;align-items:center;
 padding:4px 11px;border-radius:999px;font-size:12px;font-weight:600;
 color:var(--blue-700);background:var(--sky-100);border:1px solid #d5e4fd;
}
/* ============ 特色卡 ============ */
.feature-item{
 display:flex;gap:16px;padding:22px;background:var(--card);
 border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.feature-item + .feature-item{margin-top:16px;}
.feature-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.feature-icon{
 flex:0 0 46px;width:46px;height:46px;border-radius:12px;
 background:var(--sky-100);display:grid;place-items:center;color:var(--blue-700);
}
.feature-icon svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.feature-title{font-size:17px;font-weight:800;color:var(--blue-900);margin-bottom:6px;}
.feature-text{font-size:14.5px;line-height:1.8;color:var(--ink-soft);margin-bottom:12px;}
/* ============ 数据条 ============ */
.stat-band{
 background:linear-gradient(120deg,#0f2c52,#081a33 72%);
 border-radius:var(--radius-lg);padding:38px 32px;
 display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:26px;
 color:#fff;box-shadow:var(--shadow-md);
}
.stat-cell{border-left:2px solid rgba(90,150,255,.45);padding-left:16px;}
.stat-num{font-size:32px;font-weight:800;letter-spacing:1px;line-height:1.2;color:#fff;}
.stat-num span{font-size:15px;color:#7fb2ff;margin-left:3px;font-weight:700;}
.stat-label{font-size:13.5px;color:#b9cde9;margin-top:6px;line-height:1.7;}
/* ============ 场景图文 ============ */
.scene{
 display:grid;grid-template-columns:1fr 1fr;background:#fff;
 border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
 box-shadow:var(--shadow-sm);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.scene + .scene{margin-top:26px;}
.scene:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.scene-media{position:relative;min-height:290px;background:var(--sky-100);}
.scene-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.scene-body{padding:32px;}
.scene.rev .scene-media{order:2;}
.scene-title{font-size:21px;font-weight:800;color:var(--blue-900);margin-bottom:12px;line-height:1.4;}
.scene-text{font-size:14.5px;line-height:1.85;color:var(--ink-soft);}
.scene-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;}
/* ============ 流程 ============ */
.flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.flow-step{
 position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
 padding:28px 22px 24px;box-shadow:var(--shadow-sm);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.flow-step:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.flow-step::before{content:"";position:absolute;top:0;left:22px;width:38px;height:3px;background:var(--blue-600);border-radius:0 0 3px 3px;}
.flow-num{font-size:12.5px;font-weight:800;letter-spacing:2px;color:var(--blue-600);}
.flow-title{font-size:17px;font-weight:800;color:var(--blue-900);margin:8px 0 10px;}
.flow-text{font-size:14px;line-height:1.8;color:var(--ink-soft);}
/* ============ 对比 ============ */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.compare-col{border-radius:var(--radius-lg);padding:28px;border:1px solid var(--line);box-shadow:var(--shadow-sm);transition:.2s;}
.compare-col:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
.compare-col.bad{background:#fbfcfe;border-color:#e6ecf5;}
.compare-col.good{background:var(--sky-50);border-color:#cfe0fb;}
.compare-head{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;color:var(--blue-900);margin-bottom:16px;}
.compare-list li{position:relative;padding-left:24px;font-size:14.5px;line-height:1.8;color:var(--ink-soft);margin-bottom:12px;}
.compare-list li:last-child{margin-bottom:0;}
.compare-list li::before{content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:50%;}
.bad .compare-list li::before{background:#b9c6da;}
.good .compare-list li::before{background:var(--blue-600);}
/* ============ 配置表 ============ */
.config{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);}
.config-row{
 display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:16px;align-items:center;
 padding:18px 24px;border-bottom:1px solid var(--line);font-size:14.5px;color:var(--ink-soft);
 transition:background .2s ease;
}
.config-row:last-child{border-bottom:0;}
.config-row:hover{background:var(--sky-50);}
.config-row.head{
 background:var(--blue-900);color:#dbe9ff;font-size:13px;font-weight:700;letter-spacing:1px;
 border-bottom:0;
}
.config-row.head:hover{background:var(--blue-900);}
.config-name{font-weight:700;color:var(--blue-900);}
.config-row .num{font-weight:700;color:var(--blue-700);}
/* ============ FAQ ============ */
.faq{max-width:920px;}
.faq-item{
 border:1px solid var(--line);border-radius:var(--radius);background:#fff;
 margin-bottom:14px;box-shadow:var(--shadow-sm);overflow:hidden;
 transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:#cfe0fb;box-shadow:var(--shadow-md);}
.faq-q{
 display:flex;align-items:center;justify-content:space-between;gap:16px;
 padding:18px 22px;font-size:16px;font-weight:700;color:var(--blue-900);
 cursor:pointer;list-style:none;
}
.faq-q::-webkit-details-marker{display:none;}
.faq-q::after{content:"+";font-size:20px;line-height:1;color:var(--blue-600);transition:transform .2s ease;}
.faq-item[open] .faq-q::after{content:"–";}
.faq-a{padding:0 22px 20px;color:var(--ink-soft);font-size:14.5px;line-height:1.85;}
/* ============ 转化条 ============ */
.cta-band{
 background:linear-gradient(120deg,#1746b6,#0f2c52);
 border-radius:var(--radius-lg);padding:44px 40px;color:#fff;
 display:grid;grid-template-columns:1.4fr .6fr;gap:32px;align-items:center;
 box-shadow:var(--shadow-lg);
}
.cta-title{font-size:clamp(21px,2.2vw,26px);font-weight:800;margin-bottom:12px;line-height:1.4;}
.cta-text{color:#cddff7;font-size:14.5px;line-height:1.85;}
.cta-points{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:18px;font-size:13.5px;color:#bfd6f5;}
.cta-points li{display:flex;align-items:center;gap:8px;}
.cta-points li::before{content:"";width:6px;height:6px;border-radius:50%;background:#5eead4;}
.cta-action{display:flex;justify-content:flex-end;}
/* ============ 吸底条 ============ */
.sticky-bar{
 position:fixed;left:0;right:0;bottom:0;z-index:70;
 background:rgba(255,255,255,.96);border-top:1px solid var(--line);
 box-shadow:0 -8px 24px rgba(16,38,74,.10);
 backdrop-filter:saturate(180%) blur(10px);
}
.sticky-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 0;}
.sticky-text{font-size:14px;color:var(--ink-soft);line-height:1.5;}
.sticky-text strong{color:var(--blue-900);}
/* ============ 页脚 ============ */
.site-footer{background:#081a33;color:#c7d7ee;padding:56px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-bottom:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:16px;margin-bottom:14px;}
.footer-brand .logo-mark{width:32px;height:32px;border-radius:9px;}
.footer-brand .logo-mark svg{width:18px;height:18px;}
.footer-about{font-size:13.5px;line-height:1.85;color:#9db4d4;max-width:420px;}
.footer-col h5{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px;letter-spacing:1px;}
.footer-col ul li{margin-bottom:9px;}
.footer-col a{font-size:13.5px;color:#9db4d4;transition:color .2s ease;}
.footer-col a:hover{color:#7fb2ff;}
.footer-bottom{
 border-top:1px solid rgba(255,255,255,.12);padding:18px 0;
 display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
 font-size:12.5px;color:#7c93b3;
}
/* ============ 响应式 ============ */
@media (max-width:1024px){
 .hero-grid{grid-template-columns:1fr;gap:32px;}
 .split{grid-template-columns:1fr;gap:28px;}
 .split-aside{position:static;}
 .stat-band{grid-template-columns:repeat(2,minmax(0,1fr));padding:32px 26px;}
 .flow{grid-template-columns:repeat(2,minmax(0,1fr));}
 .cta-band{grid-template-columns:1fr;padding:36px 28px;}
 .cta-action{justify-content:flex-start;}
}
@media (max-width:900px){
 .main-nav{
  position:absolute;top:64px;left:0;right:0;display:none;flex-direction:column;
  align-items:stretch;gap:2px;padding:10px 14px 16px;
  background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow-md);
 }
 .main-nav.is-open{display:flex;}
 .nav-link{padding:13px 14px;font-size:15px;}
 .nav-link.active::after{display:none;}
 .nav-toggle{display:grid;}
 .header-actions .btn-sm{display:none;}
}
@media (max-width:768px){
 .section{padding:52px 0;}
 .hero-inner{padding:44px 0 96px;}
 .hero-title{letter-spacing:.5px;}
 .scene{grid-template-columns:1fr;}
 .scene.rev .scene-media{order:0;}
 .scene-media{min-height:210px;}
 .scene-body{padding:26px 22px;}
 .compare{grid-template-columns:1fr;}
 .config-row{grid-template-columns:1.4fr 1fr 1fr;gap:12px;padding:16px 18px;font-size:13.5px;}
 .config-row .col-freeze{display:none;}
 .footer-grid{grid-template-columns:1fr;gap:28px;}
 .cta-band{padding:30px 22px;}
 .sticky-text{font-size:13px;}
}
@media (max-width:520px){
 .hero-inner{padding:36px 0 88px;}
 .hero-panel{padding:20px;}
 .hero-title{font-size:27px;line-height:1.34;}
 .hero-sub{font-size:14.5px;}
 .stat-band{grid-template-columns:1fr;gap:18px;padding:26px 20px;}
 .flow{grid-template-columns:1fr;}
 .config-row{grid-template-columns:1fr 1fr;gap:8px 12px;}
 .config-row.head{display:none;}
 .config-name{grid-column:1 / -1;font-size:14px;}
 .cta-points{flex-direction:column;gap:8px;}
 .sticky-inner{padding:10px 0;gap:10px;}
 .sticky-text{font-size:12.5px;}
 .btn{height:44px;padding:0 18px;font-size:14px;}
}

/* roulang page: category3 */
:root{
  --blue-900:#081a33;--blue-800:#0f2c52;--blue-700:#1746b6;--blue-600:#2563eb;--blue-500:#3b82f6;
  --sky-100:#e6f0ff;--sky-50:#f4f8ff;--ink:#0f1b2d;--ink-soft:#33455f;--muted:#5f7191;
  --line:#e3ebf7;--line-strong:#cfdcf0;--card:#ffffff;
  --radius-lg:16px;--radius:12px;--radius-sm:8px;
  --shadow-sm:0 1px 2px rgba(16,38,74,.05),0 6px 18px rgba(16,38,74,.06);
  --shadow-md:0 12px 32px rgba(16,38,74,.10);
  --shadow-lg:0 22px 54px rgba(16,38,74,.18);
  --maxw:1180px;
}
*,*::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",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;font-size:15px;line-height:1.75;color:var(--ink);background:#ffffff;padding-bottom:76px;}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4,h5,h6,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;letter-spacing:.5px;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn:focus-visible{outline:3px solid rgba(59,130,246,.55);outline-offset:2px;}
.btn-primary{background:linear-gradient(180deg,#2f74f5,#1b52d4);color:#fff;box-shadow:0 8px 20px rgba(31,90,214,.32);}
.btn-primary:hover{background:linear-gradient(180deg,#2563eb,#1445b8);transform:translateY(-2px);box-shadow:0 14px 28px rgba(31,90,214,.38);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:rgba(255,255,255,.10);color:#fff;border-color:rgba(255,255,255,.55);backdrop-filter:blur(4px);}
.btn-ghost:hover{background:rgba(255,255,255,.22);border-color:#fff;transform:translateY(-2px);}
.btn-outline{background:#fff;color:var(--blue-700);border-color:var(--line-strong);}
.btn-outline:hover{border-color:var(--blue-500);color:var(--blue-600);transform:translateY(-2px);box-shadow:var(--shadow-sm);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 22px rgba(16,38,74,.10);background:rgba(255,255,255,.97);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px;gap:18px;position:relative;}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(140deg,#2f74f5,#0f2c52);
  box-shadow:0 6px 16px rgba(23,70,182,.30);
}
.logo-mark svg{width:20px;height:20px;fill:#fff;}
.logo-text{font-size:17px;font-weight:800;letter-spacing:.5px;color:var(--blue-900);line-height:1.2;}
.logo-text small{display:block;font-size:10px;font-weight:500;color:var(--muted);letter-spacing:2px;margin-top:2px;}
.main-nav{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;display:inline-block;padding:8px 14px;border-radius:var(--radius-sm);
  font-size:14.5px;font-weight:600;color:var(--ink-soft);
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--blue-600);background:var(--sky-50);}
.nav-link.active{color:var(--blue-700);background:var(--sky-100);}
.nav-link.active::after{
  content:"";position:absolute;left:50%;bottom:-2px;transform:translateX(-50%);
  width:18px;height:3px;border-radius:2px;background:var(--blue-600);
}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line-strong);
  background:#fff;cursor:pointer;padding:0;place-items:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--blue-900);border-radius:2px;margin:3px auto;transition:.22s;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg);}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;background:var(--blue-900);color:#fff;}
.hero-bg{position:absolute;inset:0;z-index:0;}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.38;}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(108deg,rgba(6,22,44,.96) 0%,rgba(9,32,66,.88) 48%,rgba(10,40,86,.60) 100%);
}
.hero-inner{position:relative;z-index:1;padding:66px 20px 60px;max-width:var(--maxw);margin:0 auto;}
.hero-grid{display:grid;grid-template-columns:1.18fr .82fr;gap:48px;align-items:center;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;font-size:13px;font-weight:600;letter-spacing:.5px;
  background:rgba(59,130,246,.22);border:1px solid rgba(120,170,255,.45);color:#cfe2ff;
}
.hero-badge i{width:6px;height:6px;border-radius:50%;background:#5eead4;display:inline-block;box-shadow:0 0 0 4px rgba(94,234,212,.22);}
.hero-title{font-size:38px;line-height:1.3;font-weight:800;letter-spacing:.8px;margin:20px 0 16px;color:#fff;}
.hero-title em{font-style:normal;color:#7fb2ff;}
.hero-sub{font-size:15.5px;line-height:1.85;color:#d3e2f7;max-width:640px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 15px;border-radius:999px;font-size:13px;font-weight:600;
  color:#dbe9ff;background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.20);
  transition:.2s;
}
.chip:hover{background:rgba(255,255,255,.18);border-color:rgba(255,255,255,.42);color:#fff;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-panel{
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);
  border-radius:var(--radius-lg);padding:24px;backdrop-filter:blur(8px);
  box-shadow:0 20px 48px rgba(3,14,32,.35);
}
.panel-head{display:flex;align-items:center;gap:10px;padding-bottom:14px;border-bottom:1px solid rgba(255,255,255,.14);}
.panel-head strong{font-size:15px;letter-spacing:.6px;color:#eaf2ff;}
.panel-dot{width:8px;height:8px;border-radius:50%;background:#5eead4;box-shadow:0 0 0 4px rgba(94,234,212,.20);}
.panel-list{margin-top:6px;}
.panel-list li{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:13px 0;border-bottom:1px dashed rgba(255,255,255,.14);font-size:13.5px;color:#c8dbf5;}
.panel-list li:last-child{border-bottom:0;}
.panel-list b{color:#fff;font-size:14px;letter-spacing:.4px;white-space:nowrap;}
.panel-foot{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:14px;padding-top:16px;border-top:1px solid rgba(255,255,255,.14);}
.panel-foot div{text-align:center;}
.panel-foot b{display:block;font-size:20px;font-weight:800;color:#7fb2ff;letter-spacing:.6px;}
.panel-foot span{font-size:12px;color:#a9c2e0;letter-spacing:.5px;}

/* ============ 板块 ============ */
.section{padding:72px 0;}
.section-alt{background:var(--sky-50);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.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:9px;font-size:13px;font-weight:700;letter-spacing:1.6px;color:var(--blue-600);margin-bottom:12px;}
.eyebrow::before{content:"";width:22px;height:3px;border-radius:2px;background:var(--blue-500);}
.section-title{font-size:29px;line-height:1.4;font-weight:800;letter-spacing:.4px;color:var(--blue-900);}
.section-desc{margin-top:14px;font-size:15px;color:var(--muted);line-height:1.85;}

/* ============ 网格 ============ */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}

/* ============ 卡片 ============ */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.card-icon{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:var(--sky-100);color:var(--blue-700);margin-bottom:18px;
}
.card-icon svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.card-title{font-size:17px;font-weight:700;color:var(--blue-900);letter-spacing:.3px;}
.card-text{margin-top:10px;font-size:14.5px;line-height:1.85;color:var(--ink-soft);}
.card-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.tag{
  display:inline-block;padding:4px 11px;border-radius:999px;font-size:12px;font-weight:600;
  color:var(--blue-700);background:var(--sky-100);border:1px solid #d3e3ff;
}

/* ============ 图鉴卡片 ============ */
.codex-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.codex-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.codex-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--sky-100);}
.codex-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.codex-card:hover .codex-media img{transform:scale(1.05);}
.codex-rate{
  position:absolute;left:14px;top:14px;padding:5px 12px;border-radius:999px;
  font-size:12.5px;font-weight:700;color:#fff;background:rgba(8,26,51,.78);
  border:1px solid rgba(255,255,255,.30);backdrop-filter:blur(4px);letter-spacing:.4px;
}
.codex-body{padding:22px 22px 24px;}
.codex-body h3{font-size:17px;font-weight:700;color:var(--blue-900);}
.codex-body p{margin-top:10px;font-size:14.5px;line-height:1.85;color:var(--ink-soft);}

/* ============ 流程 ============ */
.step{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px 22px 24px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.step-num{
  display:inline-grid;place-items:center;width:38px;height:38px;border-radius:11px;
  font-size:15px;font-weight:800;color:#fff;letter-spacing:.5px;
  background:linear-gradient(140deg,#2f74f5,#1746b6);box-shadow:0 6px 14px rgba(23,70,182,.28);
  margin-bottom:16px;
}
.step h3{font-size:16.5px;font-weight:700;color:var(--blue-900);}
.step p{margin-top:9px;font-size:14.5px;line-height:1.85;color:var(--ink-soft);}

/* ============ 对比 ============ */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:stretch;}
.compare-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:28px;box-shadow:var(--shadow-sm);
}
.compare-panel.is-hot{
  background:linear-gradient(180deg,#f1f7ff,#ffffff);
  border-color:#cbdcfa;box-shadow:var(--shadow-md);
}
.compare-panel h3{font-size:18px;font-weight:800;color:var(--blue-900);display:flex;align-items:center;gap:10px;}
.compare-panel h3 span{
  display:inline-block;width:9px;height:9px;border-radius:50%;background:#9fb4d4;
}
.compare-panel.is-hot h3 span{background:var(--blue-600);box-shadow:0 0 0 4px rgba(37,99,235,.16);}
.compare-list{margin-top:16px;}
.compare-list li{
  display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  padding:13px 0;border-bottom:1px dashed var(--line);font-size:14.5px;
}
.compare-list li:last-child{border-bottom:0;}
.compare-list span{color:var(--muted);flex:0 0 auto;}
.compare-list b{color:var(--blue-900);font-weight:700;text-align:right;}
.compare-panel.is-hot .compare-list b{color:var(--blue-700);}

/* ============ 复盘语录 ============ */
.quote-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;gap:14px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.quote-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.quote-text{font-size:14.5px;line-height:1.9;color:var(--ink-soft);}
.quote-user{display:flex;align-items:center;gap:12px;padding-top:14px;border-top:1px solid var(--line);}
.avatar{
  width:38px;height:38px;border-radius:50%;display:grid;place-items:center;
  font-size:14px;font-weight:800;color:var(--blue-700);background:var(--sky-100);
  border:1px solid #d3e3ff;
}
.quote-user strong{display:block;font-size:14px;color:var(--blue-900);}
.quote-user small{display:block;font-size:12px;color:var(--muted);letter-spacing:.4px;}

/* ============ 资讯列表 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.news-item{
  display:flex;flex-direction:column;gap:12px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:24px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong);}
.news-item:focus-visible{outline:3px solid rgba(59,130,246,.55);outline-offset:3px;}
.news-badge{
  align-self:flex-start;padding:4px 11px;border-radius:999px;font-size:12px;font-weight:700;
  color:var(--blue-700);background:var(--sky-100);border:1px solid #d3e3ff;
}
.news-title{font-size:16px;font-weight:700;line-height:1.6;color:var(--blue-900);}
.news-item:hover .news-title{color:var(--blue-700);}
.news-desc{font-size:14px;line-height:1.8;color:var(--muted);}
.news-empty{
  grid-column:1/-1;text-align:center;padding:38px 16px;color:var(--muted);
  background:#fff;border:1px dashed var(--line-strong);border-radius:var(--radius-lg);font-size:14.5px;
}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:14px;max-width:920px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:#cbdcfa;box-shadow:var(--shadow-md);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 54px 20px 24px;position:relative;
  font-size:16px;font-weight:700;color:var(--blue-900);line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";position:absolute;right:24px;top:26px;width:9px;height:9px;
  border-right:2px solid var(--blue-600);border-bottom:2px solid var(--blue-600);
  transform:rotate(45deg);transition:transform .22s ease;
}
.faq-item[open] summary::after{transform:rotate(-135deg);top:29px;}
.faq-item summary:focus-visible{outline:3px solid rgba(59,130,246,.55);outline-offset:-3px;}
.faq-body{padding:0 24px 22px;font-size:14.5px;line-height:1.9;color:var(--ink-soft);}

/* ============ 转化区 ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  background:linear-gradient(120deg,#0b2344 0%,#123c78 58%,#1b52b8 100%);
  color:#fff;padding:48px 44px;box-shadow:var(--shadow-lg);
  display:grid;grid-template-columns:1.35fr .65fr;gap:36px;align-items:center;
}
.cta-band::after{
  content:"";position:absolute;right:-90px;top:-90px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(94,234,212,.20),rgba(94,234,212,0) 68%);
}
.cta-band h2{font-size:27px;line-height:1.4;font-weight:800;letter-spacing:.4px;position:relative;z-index:1;}
.cta-band p{margin-top:14px;font-size:14.5px;line-height:1.9;color:#cfe0f7;max-width:620px;position:relative;z-index:1;}
.cta-side{position:relative;z-index:1;display:flex;flex-direction:column;gap:12px;}
.cta-side .btn{width:100%;}
.cta-note{font-size:12.5px;color:#a9c2e0;text-align:center;letter-spacing:.4px;}

/* ============ 底部固定转化条 ============ */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(8,26,51,.96);backdrop-filter:blur(10px);
  border-top:1px solid rgba(255,255,255,.14);color:#dbe8fb;
}
.sticky-cta .container{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:62px;padding-top:8px;padding-bottom:8px;}
.sticky-cta strong{display:block;font-size:14.5px;color:#fff;letter-spacing:.4px;}
.sticky-cta span{display:block;font-size:12.5px;color:#a9c2e0;}

/* ============ 页脚 ============ */
.site-footer{background:#07162b;color:#b9cbe3;border-top:1px solid rgba(255,255,255,.10);padding:56px 0 0;margin-top:72px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:36px;padding-bottom:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand strong{font-size:16.5px;color:#fff;letter-spacing:.5px;font-weight:800;}
.footer-about{font-size:14px;line-height:1.9;color:#93aac7;max-width:440px;}
.footer-col h5{font-size:14px;font-weight:700;color:#fff;letter-spacing:.6px;margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col ul a{font-size:14px;color:#a8bed9;transition:color .2s ease,transform .2s ease;display:inline-block;}
.footer-col ul a:hover{color:#7fb2ff;transform:translateX(2px);}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
  padding:20px 0;border-top:1px solid rgba(255,255,255,.10);
  font-size:13px;color:#7f96b4;
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:34px;}
  .hero-title{font-size:33px;}
  .hero-panel{max-width:560px;}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr));}
  .grid-3,.news-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-band{grid-template-columns:1fr;padding:40px 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:900px){
  .nav-toggle{display:grid;}
  .main-nav{
    position:absolute;top:64px;left:-20px;right:-20px;
    flex-direction:column;align-items:stretch;gap:2px;
    padding:12px 20px 18px;background:#fff;border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-md);display:none;
  }
  .main-nav.is-open{display:flex;}
  .nav-link{padding:12px 14px;font-size:15px;}
  .nav-link.active::after{display:none;}
}
@media (max-width:768px){
  .section{padding:52px 0;}
  .hero-inner{padding:48px 20px 46px;}
  .hero-title{font-size:28px;}
  .hero-sub{font-size:14.5px;}
  .section-title{font-size:23px;}
  .grid-3,.grid-4,.grid-2,.compare,.news-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .cta-band{padding:34px 24px;}
  .cta-band h2{font-size:22px;}
  .sticky-cta span{display:none;}
  .sticky-cta strong{font-size:13.5px;}
  .site-footer{margin-top:52px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .logo-text{font-size:15px;}
  .logo-text small{display:none;}
  .hero-title{font-size:24px;line-height:1.36;}
  .hero-actions .btn{width:100%;}
  .hero-panel{padding:18px;}
  .card,.quote-card,.news-item,.step{padding:20px;}
  .panel-foot b{font-size:17px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .sticky-cta .container{min-height:58px;}
}