/* roulang page: index */
:root{
  --brand:#2456e6;
  --brand-2:#3aa0ff;
  --brand-dark:#1a44c4;
  --brand-soft:#eef3ff;
  --ink:#0f172a;
  --ink-soft:#334155;
  --muted:#64748b;
  --line:#e4eaf5;
  --line-soft:#eef2fb;
  --bg:#f6f8fd;
  --white:#ffffff;
  --dark:#0c1526;
  --dark-2:#111e35;
  --radius-sm:10px;
  --radius:14px;
  --radius-lg:20px;
  --shadow-1:0 1px 2px rgba(15,23,42,.05),0 2px 8px rgba(15,23,42,.04);
  --shadow-2:0 10px 28px rgba(15,23,42,.09);
  --shadow-3:0 24px 56px rgba(15,23,42,.16);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:15px;
  line-height:1.78;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,pre{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 22px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line-soft);
  transition:box-shadow .22s ease;
}
.site-header.is-stuck{box-shadow:0 8px 24px rgba(15,23,42,.08)}
.header-inner{display:flex;align-items:center;gap:16px;height:64px;position:relative}
.brand{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:800;letter-spacing:.2px;white-space:nowrap;color:var(--ink)}
.brand-mark{
  width:32px;height:32px;border-radius:9px;flex:0 0 32px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  display:grid;place-items:center;color:#fff;
  box-shadow:0 6px 14px rgba(36,86,230,.32);
}
.brand-mark svg{width:18px;height:18px}
.nav-tabs{
  display:flex;align-items:center;gap:4px;margin-left:auto;
  background:#f1f4fb;border:1px solid var(--line-soft);
  border-radius:999px;padding:4px;
}
.nav-tab{
  font-size:13.5px;padding:6px 15px;border-radius:999px;
  color:#475569;transition:color .18s ease,background-color .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.nav-tab:hover{color:var(--brand);background:#fff}
.nav-tab.is-active{background:#fff;color:var(--brand);font-weight:700;box-shadow:0 2px 8px rgba(15,23,42,.09)}
.header-cta{margin-left:12px;white-space:nowrap}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;margin-left:auto;
  border-radius:11px;border:1px solid var(--line);
  background:#fff;cursor:pointer;transition:border-color .18s ease,box-shadow .18s ease;
}
.nav-toggle:hover{border-color:#c7d5f5;box-shadow:var(--shadow-1)}
.nav-toggle svg{width:20px;height:20px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  border-radius:10px;border:1px solid transparent;
  font-size:14px;font-weight:600;padding:10px 18px;
  cursor:pointer;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn svg{width:16px;height:16px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(36,86,230,.28)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:0 12px 24px rgba(36,86,230,.34)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(36,86,230,.28)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:#c3d3f7;color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow-1)}
.btn-lg{padding:13px 24px;font-size:15px;border-radius:12px}
.btn-block{width:100%}

/* ============ 通用板块 ============ */
.section{padding:74px 0;position:relative}
.section--white{background:#fff}
.section--alt{background:#f6f8fd}
.section--tint{background:linear-gradient(180deg,#f2f6ff 0%,#f8faff 100%)}
.section--dark{background:var(--dark);color:#e2e8f5}
.section-head{max-width:780px;margin-bottom:38px}
.section-head.is-center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:7px;
  font-size:12.5px;font-weight:700;letter-spacing:.06em;
  color:var(--brand);background:var(--brand-soft);
  padding:5px 13px;border-radius:999px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand)}
.eyebrow--light{background:rgba(58,160,255,.16);color:#8ec2ff}
.eyebrow--light::before{background:#8ec2ff}
.section-title{
  font-size:29px;line-height:1.36;font-weight:800;letter-spacing:-.2px;
  margin:14px 0 12px;color:var(--ink);
}
.section--dark .section-title{color:#fff}
.section-desc{font-size:15px;color:var(--muted);line-height:1.85}
.section--dark .section-desc{color:#9fb0c9}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;background:#fbfcff;padding:66px 0 78px}
.hero-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;opacity:.14}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(251,252,255,.55) 0%,rgba(247,249,252,.94) 62%,var(--bg) 100%)}
.hero-inner{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center}
.hero-title{
  font-size:40px;line-height:1.28;font-weight:800;letter-spacing:-.5px;
  margin:16px 0 18px;color:var(--ink);
}
.hero-title .hl{color:var(--brand)}
.hero-lead{font-size:15.5px;line-height:1.9;color:var(--ink-soft);max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.chip-row{display:flex;flex-wrap:wrap;gap:9px;margin-top:26px}
.chip{
  font-size:12.5px;color:#3b5478;background:#fff;border:1px solid var(--line);
  border-radius:999px;padding:6px 14px;box-shadow:var(--shadow-1);
}
.hero-terminal{position:relative}
.term{
  background:var(--dark);border-radius:18px;overflow:hidden;
  border:1px solid #1d2c47;box-shadow:var(--shadow-3);
}
.term-bar{
  display:flex;align-items:center;gap:8px;
  padding:12px 16px;background:var(--dark-2);border-bottom:1px solid #1d2c47;
}
.term-dot{width:9px;height:9px;border-radius:50%;background:#3d4f6d}
.term-dot:nth-child(1){background:#f16e6e}
.term-dot:nth-child(2){background:#f0c05a}
.term-dot:nth-child(3){background:#5cc98b}
.term-label{margin-left:8px;font-size:12px;color:#7f93b3;letter-spacing:.4px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.term-body{
  padding:20px 20px 16px;color:#c8d5ea;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:12.8px;line-height:2.05;white-space:pre-wrap;word-break:break-word;
}
.term-body .t-p{color:#5cc98b}
.term-body .t-k{color:#7fb2ff}
.term-body .t-v{color:#f0c05a}
.term-body .t-m{color:#7f93b3}
.term-foot{
  display:flex;align-items:center;gap:8px;
  padding:12px 20px;border-top:1px solid #1d2c47;background:rgba(255,255,255,.02);
  font-size:12.5px;color:#8ea4c2;
}
.term-foot .live{width:7px;height:7px;border-radius:50%;background:#5cc98b;box-shadow:0 0 0 4px rgba(92,201,139,.16)}

/* ============ 卡片与网格 ============ */
.grid{display:grid;gap:20px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#c3d3f7}
.card-ico{
  width:42px;height:42px;border-radius:12px;
  display:grid;place-items:center;margin-bottom:15px;
  background:var(--brand-soft);color:var(--brand);
}
.card-ico svg{width:21px;height:21px}
.card-title{font-size:16.5px;font-weight:700;margin-bottom:8px;color:var(--ink)}
.card-text{font-size:14px;color:var(--muted);line-height:1.8}
.tag{
  display:inline-block;font-size:12px;color:var(--brand);
  background:var(--brand-soft);border-radius:999px;padding:3px 10px;
}
.card-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:14px}

/* 封面媒体卡 */
.media-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-1);display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.media-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#c3d3f7}
.media-card .thumb{position:relative;overflow:hidden}
.media-card .thumb img{width:100%;height:168px;object-fit:cover;transition:transform .35s ease}
.media-card:hover .thumb img{transform:scale(1.05)}
.media-card .body{padding:18px 20px 22px}
.media-card h3{font-size:16px;font-weight:700;margin-bottom:7px}
.media-card p{font-size:13.8px;color:var(--muted);line-height:1.75}

/* 数据条 */
.stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:1px;background:var(--line);border:1px solid var(--line);
  border-radius:var(--radius-lg);overflow:hidden;
}
.stat{background:#fff;padding:26px 20px;text-align:center}
.stat b{display:block;font-size:29px;font-weight:800;color:var(--brand);line-height:1.3}
.stat span{display:block;font-size:13px;color:var(--muted);margin-top:4px}

/* 方案矩阵 */
.matrix-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.matrix-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#c3d3f7}
.matrix-card.is-featured{border-color:#b9cdf9;background:linear-gradient(180deg,#f7faff 0%,#ffffff 58%)}
.matrix-badge{
  position:absolute;top:16px;right:16px;font-size:11.5px;font-weight:700;
  color:#fff;background:var(--brand);border-radius:999px;padding:3px 10px;
}
.matrix-card h3{font-size:17px;font-weight:800;margin-bottom:8px}
.matrix-card .m-desc{font-size:13.8px;color:var(--muted);line-height:1.78;min-height:72px}
.m-list{margin-top:16px;border-top:1px dashed var(--line);padding-top:14px}
.m-list li{display:flex;align-items:flex-start;gap:8px;font-size:13.5px;color:var(--ink-soft);padding:4px 0}
.m-list svg{width:15px;height:15px;flex:0 0 15px;margin-top:5px;color:var(--brand)}

/* 频道入口 */
.channel-card{
  display:flex;flex-direction:column;gap:10px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.channel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#c3d3f7}
.channel-card .ch-top{display:flex;align-items:center;justify-content:space-between;gap:10px}
.channel-card h3{font-size:17px;font-weight:800}
.channel-card .ch-arrow{color:var(--brand);font-size:13px;font-weight:700}
.channel-card p{font-size:13.8px;color:var(--muted);line-height:1.78}
.channel-card .ch-tag{align-self:flex-start}

/* 资质墙 */
.qual-wall{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.qual{
  display:flex;align-items:center;gap:12px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:16px 18px;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.qual:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#c3d3f7}
.qual .q-ico{width:34px;height:34px;flex:0 0 34px;border-radius:10px;display:grid;place-items:center;background:#eaf7f0;color:#1f9d63}
.qual .q-ico svg{width:18px;height:18px}
.qual b{display:block;font-size:14px}
.qual span{display:block;font-size:12.5px;color:var(--muted)}

/* 流程 */
.flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;counter-reset:step}
.flow-item{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.flow-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#c3d3f7}
.flow-num{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  background:var(--brand);color:#fff;font-weight:800;font-size:15px;margin-bottom:14px;
  box-shadow:0 6px 14px rgba(36,86,230,.28);
}
.flow-item h3{font-size:15.5px;font-weight:700;margin-bottom:7px}
.flow-item p{font-size:13.6px;color:var(--muted);line-height:1.78}

/* 案例 */
.case-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-2);display:grid;grid-template-columns:1.02fr .98fr;
}
.case-card .case-img{min-height:100%;height:100%;object-fit:cover}
.case-body{padding:34px 34px 36px}
.case-body h3{font-size:20px;font-weight:800;margin-bottom:10px}
.case-body > p{font-size:14.4px;color:var(--muted);line-height:1.85;margin-bottom:18px}
.case-block{padding:12px 0;border-top:1px dashed var(--line)}
.case-block strong{display:block;font-size:13px;color:var(--brand);margin-bottom:3px}
.case-block span{font-size:13.8px;color:var(--ink-soft);line-height:1.75}

/* 评价 */
.quote-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.quote-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#c3d3f7}
.quote-card .q-stars{color:#f0b32e;font-size:13px;letter-spacing:2px;margin-bottom:10px}
.quote-card p{font-size:14px;color:var(--ink-soft);line-height:1.82}
.quote-user{display:flex;align-items:center;gap:10px;margin-top:16px;padding-top:14px;border-top:1px dashed var(--line)}
.quote-avatar{width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,#8db4ff,#c9dcff);color:#1a44c4;display:grid;place-items:center;font-weight:800;font-size:13px}
.quote-user b{font-size:13.5px;display:block}
.quote-user span{font-size:12px;color:var(--muted)}

/* 安全体系 */
.safe-wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:44px;align-items:center}
.safe-list{display:grid;gap:12px}
.safe-item{display:flex;gap:13px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:16px 18px;box-shadow:var(--shadow-1)}
.safe-item .s-ico{width:30px;height:30px;flex:0 0 30px;border-radius:9px;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand)}
.safe-item .s-ico svg{width:16px;height:16px}
.safe-item b{font-size:14.2px;display:block;margin-bottom:2px}
.safe-item span{font-size:13.3px;color:var(--muted);line-height:1.7}

/* 专题精选 */
.topic-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.topic-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#c3d3f7}
.topic-card img{width:100%;height:150px;object-fit:cover}
.topic-card .tc-body{padding:18px 20px 22px}
.topic-card h3{font-size:15.5px;font-weight:700;margin-bottom:6px}
.topic-card p{font-size:13.5px;color:var(--muted);line-height:1.75}

/* 常见异议 */
.faq-list{display:grid;gap:12px;max-width:900px;margin:0 auto}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:2px 22px;box-shadow:var(--shadow-1);transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:#c3d3f7;box-shadow:var(--shadow-2)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:17px 26px 17px 0;position:relative;
  font-size:15px;font-weight:700;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";position:absolute;right:2px;top:50%;width:9px;height:9px;
  border-right:2px solid var(--brand);border-bottom:2px solid var(--brand);
  transform:translateY(-70%) rotate(45deg);transition:transform .2s ease;
}
.faq-item[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq-item p{font-size:14px;color:var(--muted);line-height:1.85;padding:0 0 18px}

/* 资讯列表 */
.news-layout{display:grid;grid-template-columns:1.6fr .9fr;gap:24px;align-items:start}
.news-list{display:grid;gap:12px}
.news-item{
  display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:18px 20px;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#c3d3f7}
.news-item h3{font-size:15px;font-weight:700;margin-bottom:5px;line-height:1.55}
.news-item p{font-size:13.3px;color:var(--muted);line-height:1.7}
.news-meta{display:flex;flex-direction:column;align-items:flex-end;gap:6px;flex:0 0 auto}
.news-meta time{font-size:12px;color:#94a3b8;white-space:nowrap}
.news-aside{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-1)}
.news-aside h3{font-size:15px;font-weight:800;margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--line-soft)}
.aside-item{display:block;padding:11px 0;border-bottom:1px dashed var(--line-soft);transition:color .18s ease}
.aside-item:last-child{border-bottom:0;padding-bottom:0}
.aside-item:hover{color:var(--brand)}
.aside-item b{display:block;font-size:13.6px;font-weight:600;line-height:1.6}
.aside-item span{display:block;font-size:12px;color:#94a3b8;margin-top:3px}
.empty-note{
  background:#fff;border:1px dashed var(--line);border-radius:var(--radius);
  padding:38px 22px;text-align:center;color:var(--muted);font-size:14px;
}

/* 表单 */
.inquiry-wrap{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.inquiry-copy h2{font-size:29px;line-height:1.36;font-weight:800;color:#fff;margin:14px 0 14px}
.inquiry-copy p{font-size:14.6px;color:#9fb0c9;line-height:1.85}
.check-list{margin-top:20px;display:grid;gap:10px}
.check-list li{display:flex;align-items:flex-start;gap:9px;font-size:13.8px;color:#c2d0e6}
.check-list svg{width:16px;height:16px;flex:0 0 16px;margin-top:5px;color:#5cc98b}
.inquiry-form{
  background:#fff;border-radius:var(--radius-lg);padding:30px 28px 28px;
  box-shadow:var(--shadow-3);display:grid;gap:14px;
}
.form-row{display:grid;gap:6px}
.form-row label{font-size:13px;font-weight:700;color:var(--ink-soft)}
.form-row input,.form-row select,.form-row textarea{
  width:100%;font:inherit;font-size:14px;color:var(--ink);
  background:#f8fafd;border:1px solid var(--line);border-radius:10px;
  padding:11px 13px;transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease;
  min-height:44px;
}
.form-row textarea{min-height:96px;resize:vertical;line-height:1.7}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{
  outline:none;background:#fff;border-color:var(--brand);
  box-shadow:0 0 0 4px rgba(36,86,230,.12);
}
.form-hint{font-size:12.3px;color:var(--muted);line-height:1.7}
.form-msg{
  margin-top:4px;font-size:13.4px;color:#1f9d63;background:#eaf7f0;
  border:1px solid #c6ebd8;border-radius:10px;padding:10px 13px;
}

/* 页脚 */
.site-footer{background:var(--dark);color:#93a5be;padding:58px 0 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;font-size:15.5px;font-weight:800;color:#fff;margin-bottom:14px}
.footer-brand .brand-mark{box-shadow:none}
.footer-desc{font-size:13.5px;line-height:1.85;color:#8296b0;max-width:340px}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-links{display:grid;gap:9px}
.footer-links a{font-size:13.4px;color:#93a5be;transition:color .18s ease,transform .18s ease;display:inline-block}
.footer-links a:hover{color:#7fb2ff;transform:translateX(2px)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:20px 0 26px;display:flex;flex-wrap:wrap;gap:10px;
  align-items:center;justify-content:space-between;
  font-size:12.6px;color:#7286a2;
}
.footer-bottom span{line-height:1.7}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .hero-title{font-size:34px}
  .grid-4,.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .qual-wall{grid-template-columns:repeat(2,minmax(0,1fr))}
  .flow{grid-template-columns:repeat(2,minmax(0,1fr))}
  .case-card{grid-template-columns:1fr}
  .case-card .case-img{height:230px;min-height:230px}
  .safe-wrap{grid-template-columns:1fr;gap:30px}
  .news-layout{grid-template-columns:1fr}
  .inquiry-wrap{grid-template-columns:1fr;gap:34px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:900px){
  .nav-tabs{
    position:absolute;top:64px;left:0;right:0;
    margin-left:0;flex-direction:column;align-items:stretch;gap:2px;
    background:#fff;border:1px solid var(--line);border-top:0;
    border-radius:0 0 16px 16px;padding:10px;
    box-shadow:0 18px 36px rgba(15,23,42,.12);
    display:none;
  }
  .nav-tabs.is-open{display:flex}
  .nav-tab{padding:11px 14px;border-radius:10px;font-size:14px}
  .header-cta{display:none}
  .nav-toggle{display:inline-flex}
}
@media (max-width:768px){
  .section{padding:54px 0}
  .hero{padding:44px 0 56px}
  .hero-title{font-size:29px}
  .section-title{font-size:23px}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr}
  .qual-wall{grid-template-columns:1fr}
  .case-body{padding:26px 22px 28px}
  .inquiry-form{padding:24px 20px}
  .inquiry-copy h2{font-size:23px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .news-item{flex-direction:column;gap:8px}
  .news-meta{flex-direction:row;align-items:center}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .hero-title{font-size:25px;line-height:1.34}
  .section-title{font-size:21px}
  .stats{grid-template-columns:1fr}
  .stat{padding:20px 16px}
  .term-body{font-size:11.6px;padding:16px}
  .header-inner{gap:10px}
  .brand{font-size:13.5px}
  .btn-lg{padding:12px 18px;font-size:14px}
  .hero-actions{gap:10px}
  .hero-actions .btn{flex:1 1 auto}
  .flow-num{width:32px;height:32px}
}

/* roulang page: article */
:root{
  --brand:#2456e6;
  --brand-2:#3aa0ff;
  --brand-dark:#1a44c4;
  --brand-soft:#eef3ff;
  --gold:#e6b95c;
  --ink:#0f172a;
  --ink-soft:#334155;
  --muted:#64748b;
  --line:#e4eaf5;
  --line-soft:#eef2fb;
  --bg:#f6f8fd;
  --white:#ffffff;
  --dark:#0c1526;
  --dark-2:#111e35;
  --radius-sm:10px;
  --radius:14px;
  --radius-lg:20px;
  --shadow-1:0 1px 2px rgba(15,23,42,.05),0 2px 8px rgba(15,23,42,.04);
  --shadow-2:0 10px 28px rgba(15,23,42,.09);
  --shadow-3:0 24px 56px rgba(15,23,42,.16);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:15px;
  line-height:1.78;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding-left:0;list-style:none}
:focus-visible{outline:3px solid rgba(58,160,255,.55);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 22px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line-soft);
  transition:box-shadow .22s ease;
}
.site-header.is-stuck{box-shadow:0 8px 24px rgba(15,23,42,.08)}
.header-inner{display:flex;align-items:center;gap:16px;height:64px;position:relative}
.brand{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:800;letter-spacing:.2px;white-space:nowrap;color:var(--ink)}
.brand-mark{
  width:32px;height:32px;border-radius:9px;flex:0 0 32px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  display:grid;place-items:center;color:#fff;
  box-shadow:0 6px 14px rgba(36,86,230,.32);
}
.brand-mark svg{width:18px;height:18px}
.nav-tabs{
  display:flex;align-items:center;gap:4px;margin-left:auto;
  background:#f1f4fb;border:1px solid var(--line-soft);
  border-radius:999px;padding:4px;
}
.nav-tab{
  font-size:13.5px;padding:6px 15px;border-radius:999px;
  color:#475569;white-space:nowrap;
  transition:color .18s ease,background-color .18s ease,box-shadow .18s ease;
}
.nav-tab:hover{color:var(--brand);background:#fff}
.nav-tab.is-active{background:#fff;color:var(--brand);font-weight:700;box-shadow:0 2px 8px rgba(15,23,42,.09)}
.header-cta{margin-left:12px;white-space:nowrap}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;margin-left:auto;
  border-radius:11px;border:1px solid var(--line);
  background:#fff;cursor:pointer;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.nav-toggle:hover{border-color:#c7d5f5;box-shadow:var(--shadow-1)}
.nav-toggle svg{width:20px;height:20px}

/* ============ 按钮与标签 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  border-radius:10px;border:1px solid transparent;
  font-size:14px;font-weight:600;padding:10px 18px;
  cursor:pointer;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn svg{width:16px;height:16px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(36,86,230,.28)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:0 12px 24px rgba(36,86,230,.34)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(36,86,230,.28)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:#c3d3f7;color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow-1)}
.btn-light{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.28);color:#eaf1ff}
.btn-light:hover{background:rgba(255,255,255,.2);transform:translateY(-2px)}
.btn-lg{padding:13px 24px;font-size:15px;border-radius:12px}
.btn-block{width:100%}
.chip-row{display:flex;flex-wrap:wrap;gap:9px}
.chip{
  font-size:12.5px;color:#3b5478;background:#fff;border:1px solid var(--line);
  border-radius:999px;padding:6px 14px;box-shadow:var(--shadow-1);
}
.eyebrow{
  display:inline-flex;align-items:center;gap:7px;
  font-size:12.5px;font-weight:700;letter-spacing:.06em;
  color:var(--brand);background:var(--brand-soft);
  padding:5px 13px;border-radius:999px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand)}

/* ============ 文章头部 ============ */
.article-hero{position:relative;overflow:hidden;background:var(--dark);color:#e6edf9;padding:44px 0 54px}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  opacity:.16;
}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(900px 420px at 88% -10%,rgba(58,160,255,.32),transparent 62%),
             linear-gradient(180deg,rgba(12,21,38,.35) 0%,rgba(12,21,38,.92) 78%);
}
.article-hero .container{position:relative;z-index:2}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px;color:#93a6c2}
.crumb a{color:#b9cae4;transition:color .18s ease}
.crumb a:hover{color:#fff}
.crumb span.dot{color:#4a5b78}
.crumb .current{color:#8fa3c0;max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rank-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;margin-bottom:16px;
  background:linear-gradient(135deg,rgba(230,185,92,.2),rgba(230,185,92,.06));
  border:1px solid rgba(230,185,92,.48);
  color:var(--gold);font-size:12.5px;font-weight:700;letter-spacing:.03em;
}
.rank-badge svg{width:15px;height:15px}
.article-title{
  font-size:34px;line-height:1.38;font-weight:800;letter-spacing:-.4px;
  color:#fff;margin-bottom:16px;max-width:900px;
}
.article-summary{font-size:15px;line-height:1.9;color:#a7b8d1;max-width:820px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;margin-top:22px;font-size:13px;color:#8ea2bf}
.article-meta .meta-tag{
  display:inline-flex;align-items:center;gap:6px;
  background:rgba(58,160,255,.14);border:1px solid rgba(58,160,255,.3);
  color:#9fc6ff;border-radius:999px;padding:4px 12px;
}
.article-meta svg{width:14px;height:14px;opacity:.85}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}

/* ============ 卖点摘要条 ============ */
.brief-strip{background:#fff;border-bottom:1px solid var(--line-soft);padding:30px 0}
.brief-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.brief-item{display:flex;gap:12px;align-items:flex-start;padding:16px 16px 16px 18px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.brief-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#cddcfa}
.brief-icon{
  width:36px;height:36px;flex:0 0 36px;border-radius:10px;
  display:grid;place-items:center;color:var(--brand);
  background:var(--brand-soft);border:1px solid #dbe6fd;
}
.brief-icon svg{width:18px;height:18px}
.brief-item h3{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:3px}
.brief-item p{font-size:12.8px;line-height:1.65;color:var(--muted)}

/* ============ 板块通用 ============ */
.section{padding:62px 0}
.section--white{background:#fff}
.section--alt{background:var(--bg)}
.section--tint{background:linear-gradient(180deg,#f2f6ff 0%,#f8faff 100%)}
.section-head{max-width:760px;margin-bottom:32px}
.section-title{font-size:26px;line-height:1.4;font-weight:800;letter-spacing:-.2px;margin:12px 0 10px;color:var(--ink)}
.section-desc{font-size:14.5px;color:var(--muted);line-height:1.85}

/* ============ 正文布局 ============ */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 318px;gap:26px;align-items:start}
.article-body{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:34px 36px;box-shadow:var(--shadow-1);
}
.article-content{font-size:15.5px;line-height:1.9;color:var(--ink-soft)}
.article-content > *:first-child{margin-top:0}
.article-content h2{
  position:relative;font-size:21px;line-height:1.5;font-weight:800;color:var(--ink);
  margin:34px 0 14px;padding-left:15px;letter-spacing:-.2px;
}
.article-content h2::before{
  content:"";position:absolute;left:0;top:.26em;bottom:.26em;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--brand),var(--brand-2));
}
.article-content h3{font-size:17px;font-weight:700;color:var(--ink);margin:26px 0 10px}
.article-content p{margin:0 0 16px}
.article-content ul,.article-content ol{padding-left:22px;margin:0 0 18px;list-style:disc}
.article-content ol{list-style:decimal}
.article-content li{margin:7px 0}
.article-content strong{color:var(--ink);font-weight:700}
.article-content a{color:var(--brand);border-bottom:1px solid rgba(36,86,230,.35);transition:border-color .18s ease,color .18s ease}
.article-content a:hover{color:var(--brand-dark);border-color:var(--brand-dark)}
.article-content img{border-radius:var(--radius);margin:22px auto;box-shadow:var(--shadow-1)}
.article-content blockquote{
  margin:22px 0;padding:16px 20px;border-left:4px solid var(--brand-2);
  background:var(--brand-soft);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--ink-soft);
}
.article-content blockquote p:last-child{margin-bottom:0}
.article-content table{width:100%;border-collapse:collapse;margin:20px 0;font-size:14px}
.article-content th,.article-content td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.article-content th{background:#f4f7fe;font-weight:700;color:var(--ink)}
.article-content hr{border:0;border-top:1px solid var(--line);margin:28px 0}
.empty-box{text-align:center;padding:56px 20px}
.empty-box h2{font-size:20px;font-weight:800;color:var(--ink);margin-bottom:10px}
.empty-box p{font-size:14.5px;color:var(--muted);margin-bottom:22px}

/* ============ 侧栏 ============ */
.article-side{position:sticky;top:84px}
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;box-shadow:var(--shadow-1);margin-bottom:18px;
}
.side-card h3{font-size:14.5px;font-weight:800;color:var(--ink);margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:4px;height:14px;border-radius:3px;background:linear-gradient(180deg,var(--brand),var(--brand-2))}
.info-list li{display:flex;justify-content:space-between;align-items:center;gap:10px;font-size:13.3px;padding:9px 0;border-bottom:1px dashed var(--line-soft);color:var(--muted)}
.info-list li:last-child{border-bottom:0;padding-bottom:0}
.info-list li b{color:var(--ink);font-weight:700}
.side-card--cta{background:linear-gradient(150deg,#12203a,#0c1526);border-color:#1e2f4d;color:#dce7f8}
.side-card--cta h3{color:#fff}
.side-card--cta h3::before{background:linear-gradient(180deg,var(--gold),#c79a3c)}
.side-card--cta p{font-size:13px;line-height:1.8;color:#9fb2cd;margin-bottom:16px}
.side-list li{position:relative;padding-left:16px;font-size:13.2px;line-height:1.75;color:var(--ink-soft);margin-bottom:9px}
.side-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:6px;height:6px;border-radius:2px;
  background:var(--brand-2);opacity:.85;
}
.side-cover{border-radius:var(--radius-sm);overflow:hidden;border:1px solid var(--line);margin-bottom:12px}
.side-cover img{width:100%;aspect-ratio:16/10;object-fit:cover}

/* ============ 卡片网格 ============ */
.grid{display:grid;gap:20px}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.platform-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  display:flex;flex-direction:column;
}
.platform-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#cddcfa}
.platform-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.platform-body{padding:20px;flex:1;display:flex;flex-direction:column}
.platform-body h3{font-size:16px;font-weight:800;color:var(--ink);margin-bottom:8px}
.platform-body p{font-size:13.5px;line-height:1.8;color:var(--muted);margin-bottom:14px}
.tag-row{display:flex;flex-wrap:wrap;gap:7px;margin-top:auto}
.tag{font-size:11.5px;color:#3f5b86;background:#f2f6fe;border:1px solid #e2ebfb;border-radius:999px;padding:3px 10px}

/* ============ 步骤 ============ */
.steps-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.step-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 20px 20px;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#cddcfa}
.step-num{font-size:13px;font-weight:800;color:var(--brand);letter-spacing:.08em;margin-bottom:10px;display:block}
.step-card h3{font-size:15px;font-weight:800;color:var(--ink);margin-bottom:7px}
.step-card p{font-size:13.2px;line-height:1.75;color:var(--muted)}
.step-line{position:absolute;left:20px;right:20px;top:0;height:3px;border-radius:3px;background:linear-gradient(90deg,var(--brand),var(--brand-2));opacity:.9}

/* ============ 数据指标 ============ */
.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.stat-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 20px;text-align:center;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease}
.stat-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
.stat-num{display:block;font-size:28px;font-weight:800;letter-spacing:-.6px;color:var(--brand);line-height:1.3}
.stat-label{display:block;font-size:13px;color:var(--muted);margin-top:6px}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px;max-width:900px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-1);overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease}
.faq-item:hover{border-color:#cddcfa}
.faq-item summary{
  cursor:pointer;list-style:none;padding:17px 22px;font-size:14.8px;font-weight:700;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:14px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-size:18px;font-weight:700;color:var(--brand);
  width:24px;height:24px;flex:0 0 24px;border-radius:8px;display:grid;place-items:center;
  background:var(--brand-soft);transition:transform .2s ease,background-color .2s ease;
}
.faq-item[open] summary::after{content:"–";background:#dfe9ff}
.faq-item .faq-body{padding:0 22px 18px;font-size:14px;line-height:1.85;color:var(--muted)}

/* ============ 延伸阅读 ============ */
.post-card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#cddcfa}
.post-card h3{font-size:15px;font-weight:800;color:var(--ink);line-height:1.6;margin-bottom:8px}
.post-card p{font-size:13.2px;line-height:1.75;color:var(--muted)}

/* ============ CTA ============ */
.cta-band{background:linear-gradient(135deg,#0f1d33 0%,#12233e 55%,#0c1526 100%);border-radius:var(--radius-lg);padding:42px 44px;color:#dee8f7;display:grid;grid-template-columns:1.35fr .65fr;gap:30px;align-items:center;box-shadow:var(--shadow-3);position:relative;overflow:hidden}
.cta-band::after{content:"";position:absolute;inset:0;background:radial-gradient(620px 280px at 92% 10%,rgba(58,160,255,.26),transparent 65%);pointer-events:none}
.cta-band > *{position:relative;z-index:2}
.cta-band h2{font-size:25px;line-height:1.45;font-weight:800;color:#fff;margin-bottom:12px}
.cta-band p{font-size:14px;line-height:1.85;color:#a2b5ce;max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.cta-side{display:flex;flex-direction:column;gap:10px}
.cta-side .mini{display:flex;align-items:center;gap:10px;font-size:13px;color:#b6c8e0;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:10px;padding:11px 14px}
.cta-side .mini svg{width:16px;height:16px;color:#7fb2ff;flex:0 0 16px}

/* ============ 页脚 ============ */
.site-footer{background:#0b1220;color:#96a7c0;padding:54px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:800;color:#fff;margin-bottom:14px}
.footer-desc{font-size:13.4px;line-height:1.85;color:#8b9db8;max-width:420px}
.footer-col h4{font-size:13.5px;font-weight:700;color:#dbe6f6;margin-bottom:14px;letter-spacing:.03em}
.footer-links{display:flex;flex-direction:column;gap:9px}
.footer-links a{font-size:13.3px;color:#8fa2bd;transition:color .18s ease,transform .18s ease}
.footer-links a:hover{color:#fff;transform:translateX(2px)}
.footer-bottom{
  margin-top:38px;padding-top:20px;border-top:1px solid rgba(255,255,255,.09);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:12.5px;color:#7386a2;
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .article-layout{grid-template-columns:1fr}
  .article-side{position:static}
  .brief-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stats-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-band{grid-template-columns:1fr;padding:34px 30px}
}
@media (max-width:960px){
  .nav-tabs{
    display:none;position:absolute;top:66px;left:14px;right:14px;
    flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;border:1px solid var(--line);border-radius:16px;
    padding:10px;box-shadow:var(--shadow-2);margin:0;
  }
  .nav-tabs.is-open{display:flex}
  .nav-tab{padding:11px 14px;border-radius:10px;font-size:14px}
  .nav-tab.is-active{background:var(--brand-soft)}
  .nav-toggle{display:inline-flex}
  .header-cta{display:none}
  .article-title{font-size:28px}
  .grid-3{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .section{padding:46px 0}
  .hero-actions .btn{flex:1 1 auto}
  .article-body{padding:26px 20px}
  .article-title{font-size:24px}
  .brief-grid{grid-template-columns:1fr}
  .steps-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .crumb .current{display:none}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .cta-band{padding:28px 22px}
  .cta-band h2{font-size:21px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .brand{font-size:13.6px}
  .article-hero{padding:32px 0 40px}
  .article-title{font-size:21px;line-height:1.45}
  .stats-grid{grid-template-columns:1fr}
  .btn{padding:10px 15px;font-size:13.5px}
  .btn-lg{padding:12px 18px;font-size:14px}
  .article-content h2{font-size:19px}
}

/* roulang page: category1 */
:root{
 --brand:#2456e6;
 --brand-2:#3aa0ff;
 --brand-dark:#1a44c4;
 --brand-soft:#eef3ff;
 --ink:#0f172a;
 --ink-soft:#334155;
 --muted:#64748b;
 --line:#e4eaf5;
 --line-soft:#eef2fb;
 --bg:#f6f8fd;
 --white:#ffffff;
 --dark:#0c1526;
 --dark-2:#111e35;
 --radius-sm:10px;
 --radius:14px;
 --radius-lg:20px;
 --shadow-1:0 1px 2px rgba(15,23,42,.05),0 2px 8px rgba(15,23,42,.04);
 --shadow-2:0 10px 28px rgba(15,23,42,.09);
 --shadow-3:0 24px 56px rgba(15,23,42,.16);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
 margin:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
 font-size:15px;line-height:1.78;color:var(--ink);background:var(--bg);
 -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
h1,h2,h3,h4,p,figure{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 22px}

/* ============ 顶部导航 ============ */
.site-header{
 position:sticky;top:0;z-index:80;
 background:rgba(255,255,255,.94);
 backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
 border-bottom:1px solid var(--line-soft);
 transition:box-shadow .22s ease;
}
.site-header.is-stuck{box-shadow:0 8px 24px rgba(15,23,42,.08)}
.header-inner{display:flex;align-items:center;gap:16px;height:64px;position:relative}
.brand{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:800;letter-spacing:.2px;white-space:nowrap;color:var(--ink)}
.brand-mark{
 width:32px;height:32px;border-radius:9px;flex:0 0 32px;
 background:linear-gradient(135deg,var(--brand),var(--brand-2));
 display:grid;place-items:center;color:#fff;
 box-shadow:0 6px 14px rgba(36,86,230,.32);
}
.brand-mark svg{width:18px;height:18px}
.nav-tabs{
 display:flex;align-items:center;gap:4px;margin-left:auto;
 background:#f1f4fb;border:1px solid var(--line-soft);
 border-radius:999px;padding:4px;
}
.nav-tab{
 font-size:13.5px;padding:6px 15px;border-radius:999px;color:#475569;
 transition:color .18s ease,background-color .18s ease,box-shadow .18s ease;
 white-space:nowrap;
}
.nav-tab:hover{color:var(--brand);background:#fff}
.nav-tab.is-active{background:#fff;color:var(--brand);font-weight:700;box-shadow:0 2px 8px rgba(15,23,42,.09)}
.header-cta{margin-left:12px;white-space:nowrap}
.nav-toggle{
 display:none;align-items:center;justify-content:center;
 width:42px;height:42px;margin-left:auto;
 border-radius:11px;border:1px solid var(--line);background:#fff;cursor:pointer;
 transition:border-color .18s ease,box-shadow .18s ease;
}
.nav-toggle:hover{border-color:#c7d5f5;box-shadow:var(--shadow-1)}
.nav-toggle svg{width:20px;height:20px}

/* ============ 按钮 ============ */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:7px;
 border-radius:10px;border:1px solid transparent;
 font-size:14px;font-weight:600;padding:10px 18px;cursor:pointer;white-space:nowrap;
 transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn svg{width:16px;height:16px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(36,86,230,.28)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:0 12px 24px rgba(36,86,230,.34)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(36,86,230,.28)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:#c3d3f7;color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow-1)}
.btn-light{background:#fff;color:var(--brand);box-shadow:0 8px 20px rgba(3,10,30,.22)}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 14px 28px rgba(3,10,30,.28);background:#f7faff}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.42);color:#e8eefc}
.btn-outline-light:hover{border-color:#fff;color:#fff;transform:translateY(-2px)}
.btn-lg{padding:13px 24px;font-size:15px;border-radius:12px}
.btn-block{width:100%}

/* ============ 通用板块 ============ */
.section{padding:72px 0;position:relative}
.section--white{background:#fff}
.section--alt{background:#f6f8fd}
.section--tint{background:linear-gradient(180deg,#f2f6ff 0%,#f9fbff 100%)}
.section--line{border-top:1px solid var(--line-soft)}
.section-head{max-width:790px;margin-bottom:36px}
.section-head.is-center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
 display:inline-flex;align-items:center;gap:7px;
 font-size:12.5px;font-weight:700;letter-spacing:.06em;
 color:var(--brand);background:var(--brand-soft);
 padding:5px 13px;border-radius:999px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand)}
.eyebrow--light{background:rgba(58,160,255,.16);color:#9cc7ff}
.eyebrow--light::before{background:#9cc7ff}
.section-title{font-size:28px;line-height:1.38;font-weight:800;letter-spacing:-.2px;margin:14px 0 12px;color:var(--ink)}
.section-desc{font-size:15px;color:var(--muted);line-height:1.85}

/* ============ 分类页首屏 ============ */
.cat-hero{position:relative;overflow:hidden;background:#fbfcff;padding:60px 0 68px;border-bottom:1px solid var(--line-soft)}
.cat-hero-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-3.webp') center/cover no-repeat;opacity:.12}
.cat-hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(251,252,255,.62) 0%,rgba(247,249,252,.95) 62%,var(--bg) 100%)}
.cat-hero-inner{position:relative;display:grid;grid-template-columns:1.08fr .92fr;gap:46px;align-items:start}
.cat-hero h1{
 font-size:clamp(27px,3.4vw,37px);line-height:1.32;font-weight:800;letter-spacing:-.5px;
 margin:16px 0 16px;color:var(--ink);
}
.cat-hero h1 .hl{color:var(--brand)}
.cat-hero-lead{font-size:15.5px;line-height:1.92;color:var(--ink-soft);max-width:600px}
.benefit-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.benefit{
 display:inline-flex;align-items:center;gap:7px;
 font-size:12.8px;font-weight:600;color:#25406b;
 background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 13px;
 box-shadow:var(--shadow-1);
}
.benefit svg{width:14px;height:14px;color:var(--brand)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.chip-row{display:flex;flex-wrap:wrap;gap:9px;margin-top:24px}
.chip{
 font-size:12.5px;color:#3b5478;background:#fff;border:1px solid var(--line);
 border-radius:999px;padding:6px 14px;box-shadow:var(--shadow-1);
 transition:border-color .18s ease,color .18s ease,transform .18s ease;
}
.chip:hover{border-color:#c3d3f7;color:var(--brand);transform:translateY(-2px)}

.check-card{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
 box-shadow:var(--shadow-2);padding:24px;
}
.check-card-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:6px}
.badge{
 display:inline-flex;align-items:center;gap:6px;
 font-size:12px;font-weight:700;color:var(--brand);
 background:var(--brand-soft);border-radius:999px;padding:4px 11px;
}
.check-card-title{font-size:17px;font-weight:800;margin:8px 0 16px;color:var(--ink)}
.check-list{display:grid;gap:12px;margin-bottom:18px}
.check-list li{display:flex;gap:10px;font-size:13.8px;color:var(--ink-soft);line-height:1.7}
.ck-ico{
 flex:0 0 20px;width:20px;height:20px;border-radius:50%;
 background:var(--brand-soft);color:var(--brand);
 display:grid;place-items:center;font-size:11px;font-weight:800;margin-top:2px;
}
.check-list strong{color:var(--ink);font-weight:700}
.check-ver{
 display:grid;grid-template-columns:repeat(3,1fr);gap:10px;
 padding:14px 0 16px;border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);
 margin-bottom:18px;
}
.check-ver span{display:block;font-size:12px;color:var(--muted);margin-bottom:2px}
.check-ver strong{font-size:15px;font-weight:800;color:var(--ink)}
.check-note{font-size:12.4px;color:var(--muted);line-height:1.7;margin-top:12px}

/* ============ 卡片 ============ */
.grid{display:grid;gap:20px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.card{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-1);padding:22px;
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#cddcfa}
.card-title{font-size:16.5px;font-weight:800;margin:12px 0 8px;color:var(--ink)}
.card-text{font-size:14px;color:var(--muted);line-height:1.82}
.card-tag{
 display:inline-flex;align-items:center;gap:6px;
 font-size:12px;font-weight:700;color:var(--brand);
 background:var(--brand-soft);border-radius:999px;padding:4px 11px;
}
.card-ico{
 width:40px;height:40px;border-radius:11px;display:grid;place-items:center;
 background:var(--brand-soft);color:var(--brand);
}
.card-ico svg{width:20px;height:20px}

/* ============ 路线矩阵 ============ */
.route-card{display:flex;flex-direction:column;height:100%}
.route-card .route-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:14px}
.route-list{display:grid;gap:8px;margin-top:14px;padding-top:14px;border-top:1px dashed var(--line)}
.route-list li{position:relative;padding-left:16px;font-size:13.4px;color:#43536e;line-height:1.7}
.route-list li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:var(--brand-2)}

/* ============ 四步流程 ============ */
.flow-wrap{display:grid;grid-template-columns:.92fr 1.08fr;gap:44px;align-items:center}
.flow-figure{position:relative;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-2);border:1px solid var(--line)}
.flow-figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
.flow-figure figcaption{
 position:absolute;left:0;right:0;bottom:0;
 padding:18px;font-size:13px;color:#eaf1ff;
 background:linear-gradient(180deg,rgba(9,17,34,0) 0%,rgba(9,17,34,.82) 100%);
}
.step-list{display:grid;gap:14px}
.step{
 display:flex;gap:16px;background:#fff;border:1px solid var(--line);
 border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow-1);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#cddcfa}
.step-num{
 flex:0 0 38px;width:38px;height:38px;border-radius:11px;
 display:grid;place-items:center;font-weight:800;font-size:14px;
 background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;
 box-shadow:0 6px 14px rgba(36,86,230,.26);
}
.step h3{font-size:15.5px;font-weight:800;margin-bottom:4px}
.step p{font-size:13.6px;color:var(--muted);line-height:1.78}

/* ============ 异常排查 ============ */
.issue-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.issue{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;
 box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.issue:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#cddcfa}
.issue h3{font-size:15px;font-weight:800;margin:8px 0 6px}
.issue p{font-size:13.6px;color:var(--muted);line-height:1.8}
.issue-tag{font-size:12px;font-weight:700;color:#b4571d;background:#fff3e8;border-radius:999px;padding:3px 10px;display:inline-block}

.stat-row{
 display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;
 margin-top:30px;
}
.stat{
 background:linear-gradient(180deg,#f5f9ff 0%,#ffffff 100%);
 border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;text-align:center;
}
.stat strong{display:block;font-size:24px;font-weight:800;color:var(--brand);letter-spacing:-.4px}
.stat span{font-size:12.8px;color:var(--muted)}

/* ============ 人群与留言 ============ */
.split{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:start}
.person-item{
 display:flex;gap:14px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:18px 20px;box-shadow:var(--shadow-1);margin-bottom:14px;
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.person-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#cddcfa}
.person-item h3{font-size:15.5px;font-weight:800;margin-bottom:4px}
.person-item p{font-size:13.6px;color:var(--muted);line-height:1.78}
.person-dot{
 flex:0 0 34px;width:34px;height:34px;border-radius:50%;
 background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;font-weight:800;font-size:13px;
}
.review{
 background:#fff;border:1px solid var(--line);border-left:3px solid var(--brand-2);
 border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow-1);margin-bottom:14px;
}
.review p{font-size:14px;color:#334155;line-height:1.85}
.review cite{display:block;margin-top:10px;font-style:normal;font-size:12.6px;color:var(--muted)}

/* ============ 版本摘要 ============ */
.timeline{position:relative;padding-left:22px;border-left:2px solid var(--line)}
.tl-item{position:relative;padding-bottom:22px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
 content:"";position:absolute;left:-29px;top:6px;width:12px;height:12px;border-radius:50%;
 background:#fff;border:3px solid var(--brand-2);
}
.tl-item h3{font-size:15px;font-weight:800;margin-bottom:4px}
.tl-item p{font-size:13.6px;color:var(--muted);line-height:1.8}
.tl-ver{font-size:12px;font-weight:700;color:var(--brand);background:var(--brand-soft);border-radius:999px;padding:2px 9px;margin-right:8px}

/* ============ 资讯列表 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.news-card{
 display:flex;flex-direction:column;height:100%;
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-1);padding:20px;
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#cddcfa}
.news-card h3{font-size:15.5px;font-weight:800;line-height:1.6;margin-bottom:8px;color:var(--ink)}
.news-card p{font-size:13.5px;color:var(--muted);line-height:1.8;flex:1}
.news-meta{display:flex;align-items:center;gap:10px;margin-top:14px;padding-top:12px;border-top:1px solid var(--line-soft);font-size:12.4px;color:var(--muted)}
.news-meta span:first-child{color:var(--brand);background:var(--brand-soft);border-radius:999px;padding:2px 9px;font-weight:600}
.empty-note{font-size:14px;color:var(--muted);background:#fff;border:1px dashed var(--line);border-radius:var(--radius);padding:22px}

/* ============ FAQ ============ */
.faq-item{
 background:#fff;border:1px solid var(--line);border-radius:12px;
 padding:0 20px;margin-bottom:12px;
 transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:#cddcfa}
.faq-item[open]{border-color:#c9d8fa;box-shadow:var(--shadow-1)}
.faq-item summary{
 cursor:pointer;list-style:none;padding:17px 0;
 display:flex;align-items:center;justify-content:space-between;gap:16px;
 font-size:15px;font-weight:700;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
 content:"+";flex:0 0 24px;width:24px;height:24px;border-radius:50%;
 display:grid;place-items:center;background:var(--brand-soft);color:var(--brand);
 font-size:15px;font-weight:800;line-height:1;
}
.faq-item[open] summary::after{content:"−"}
.faq-body{padding:0 0 18px;font-size:14px;color:var(--muted);line-height:1.85}

/* ============ 收口 CTA ============ */
.cta-band{position:relative;overflow:hidden;background:var(--dark);color:#e7eefc;padding:66px 0}
.cta-band-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-4.webp') center/cover no-repeat;opacity:.22}
.cta-band-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(12,21,38,.94) 0%,rgba(17,30,53,.86) 100%)}
.cta-inner{position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.cta-band h2{font-size:27px;line-height:1.4;font-weight:800;color:#fff;margin:14px 0 12px;letter-spacing:-.2px}
.cta-band p{font-size:14.6px;color:#a8b9d2;line-height:1.9}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.cta-panel{
 background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);
 border-radius:var(--radius-lg);padding:22px;backdrop-filter:blur(6px);
}
.cta-panel h3{font-size:15px;font-weight:800;color:#fff;margin-bottom:14px}
.cta-panel li{display:flex;gap:10px;font-size:13.6px;color:#c3d2e6;line-height:1.76;margin-bottom:12px}
.cta-panel li:last-child{margin-bottom:0}
.cta-panel .ck-ico{background:rgba(58,160,255,.2);color:#8ec2ff}

/* ============ 页脚 ============ */
.site-footer{background:#0b1322;color:#93a4bd;padding:54px 0 26px;border-top:1px solid #16233a}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:15.5px;font-weight:800;color:#fff;margin-bottom:14px}
.footer-desc{font-size:13.4px;line-height:1.9;color:#8296b1;max-width:400px}
.footer-col h4{font-size:13.5px;font-weight:700;color:#fff;margin-bottom:14px;letter-spacing:.04em}
.footer-links{display:grid;gap:9px}
.footer-links a{font-size:13.4px;color:#93a4bd;transition:color .18s ease,transform .18s ease;display:inline-block}
.footer-links a:hover{color:#fff;transform:translateX(2px)}
.footer-bottom{
 display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
 margin-top:36px;padding-top:18px;border-top:1px solid #16233a;
 font-size:12.6px;color:#6f819b;
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
 .cat-hero-inner{grid-template-columns:1fr;gap:34px}
 .flow-wrap{grid-template-columns:1fr;gap:30px}
 .cta-inner{grid-template-columns:1fr;gap:28px}
 .split{grid-template-columns:1fr;gap:24px}
 .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
 .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:860px){
 .nav-tabs{
  position:absolute;top:calc(100% + 8px);left:0;right:0;margin-left:0;
  flex-direction:column;align-items:stretch;gap:2px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:8px;box-shadow:var(--shadow-2);display:none;
 }
 .nav-tabs.is-open{display:flex}
 .nav-tab{width:100%;border-radius:10px;padding:11px 14px;font-size:14px}
 .nav-toggle{display:inline-flex}
 .header-cta{display:none}
 .section{padding:56px 0}
 .cat-hero{padding:44px 0 54px}
 .grid-3{grid-template-columns:1fr}
 .issue-grid{grid-template-columns:1fr}
 .stat-row{grid-template-columns:repeat(2,minmax(0,1fr))}
 .footer-grid{grid-template-columns:1fr;gap:26px}
 .section-title{font-size:24px}
 .cta-band h2{font-size:23px}
}
@media (max-width:520px){
 .container{padding:0 16px}
 .brand span:last-child{font-size:14px}
 .grid-2{grid-template-columns:1fr}
 .news-grid{grid-template-columns:1fr}
 .check-ver{grid-template-columns:1fr;gap:12px}
 .hero-actions .btn,.cta-actions .btn{width:100%}
 .stat-row{grid-template-columns:1fr}
 .footer-bottom{flex-direction:column;gap:8px}
}

/* roulang page: category2 */
:root{
 --brand:#2456e6;
 --brand-2:#3aa0ff;
 --brand-dark:#1a44c4;
 --brand-soft:#eef3ff;
 --ink:#0f172a;
 --ink-soft:#334155;
 --muted:#64748b;
 --line:#e4eaf5;
 --line-soft:#eef2fb;
 --bg:#f6f8fd;
 --white:#ffffff;
 --dark:#0c1526;
 --dark-2:#111e35;
 --radius-sm:10px;
 --radius:14px;
 --radius-lg:20px;
 --shadow-1:0 1px 2px rgba(15,23,42,.05),0 2px 8px rgba(15,23,42,.04);
 --shadow-2:0 10px 28px rgba(15,23,42,.09);
 --shadow-3:0 24px 56px rgba(15,23,42,.16);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
 margin:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
 font-size:15px;
 line-height:1.78;
 color:var(--ink);
 background:var(--bg);
 -webkit-font-smoothing:antialiased;
 text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
p{margin:0 0 12px}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.2px}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 22px}
/* ============ 顶部导航 ============ */
.site-header{
 position:sticky;top:0;z-index:80;
 background:rgba(255,255,255,.94);
 backdrop-filter:blur(12px);
 -webkit-backdrop-filter:blur(12px);
 border-bottom:1px solid var(--line-soft);
 transition:box-shadow .22s ease;
}
.site-header.is-stuck{box-shadow:0 8px 24px rgba(15,23,42,.08)}
.header-inner{display:flex;align-items:center;gap:16px;height:64px;position:relative}
.brand{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:800;letter-spacing:.2px;white-space:nowrap;color:var(--ink)}
.brand-mark{
 width:32px;height:32px;border-radius:9px;flex:0 0 32px;
 background:linear-gradient(135deg,var(--brand),var(--brand-2));
 display:grid;place-items:center;color:#fff;
 box-shadow:0 6px 14px rgba(36,86,230,.32);
}
.brand-mark svg{width:18px;height:18px}
.nav-tabs{
 display:flex;align-items:center;gap:4px;margin-left:auto;
 background:#f1f4fb;border:1px solid var(--line-soft);
 border-radius:999px;padding:4px;
}
.nav-tab{
 font-size:13.5px;padding:6px 15px;border-radius:999px;
 color:#475569;transition:color .18s ease,background-color .18s ease,box-shadow .18s ease;
 white-space:nowrap;
}
.nav-tab:hover{color:var(--brand);background:#fff}
.nav-tab.is-active{background:#fff;color:var(--brand);font-weight:700;box-shadow:0 2px 8px rgba(15,23,42,.09)}
.header-cta{margin-left:12px;white-space:nowrap}
.nav-toggle{
 display:none;align-items:center;justify-content:center;
 width:42px;height:42px;margin-left:auto;
 border-radius:11px;border:1px solid var(--line);
 background:#fff;cursor:pointer;transition:border-color .18s ease,box-shadow .18s ease;
}
.nav-toggle:hover{border-color:#c7d5f5;box-shadow:var(--shadow-1)}
.nav-toggle svg{width:20px;height:20px}
/* ============ 按钮 ============ */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:7px;
 border-radius:10px;border:1px solid transparent;
 font-size:14px;font-weight:600;padding:10px 18px;
 cursor:pointer;white-space:nowrap;text-align:center;
 transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn svg{width:16px;height:16px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(36,86,230,.28)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:0 12px 24px rgba(36,86,230,.34)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(36,86,230,.28)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:#c3d3f7;color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow-1)}
.btn-light{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.28);color:#e8eefb}
.btn-light:hover{background:rgba(255,255,255,.2);border-color:rgba(255,255,255,.45);transform:translateY(-2px)}
.btn-lg{padding:13px 24px;font-size:15px;border-radius:12px}
.btn-block{width:100%}
/* ============ 通用板块 ============ */
.section{padding:74px 0;position:relative}
.section--white{background:#fff}
.section--alt{background:#f6f8fd}
.section--tint{background:linear-gradient(180deg,#f2f6ff 0%,#f8faff 100%)}
.section--dark{background:var(--dark);color:#e2e8f5}
.section-head{max-width:800px;margin-bottom:38px}
.section-head.is-center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
 display:inline-flex;align-items:center;gap:7px;
 font-size:12.5px;font-weight:700;letter-spacing:.06em;
 color:var(--brand);background:var(--brand-soft);
 padding:5px 13px;border-radius:999px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand)}
.eyebrow--light{background:rgba(58,160,255,.16);color:#8ec2ff}
.eyebrow--light::before{background:#8ec2ff}
.section-title{font-size:29px;line-height:1.36;font-weight:800;letter-spacing:-.2px;margin:14px 0 12px;color:var(--ink)}
.section--dark .section-title{color:#fff}
.section-desc{font-size:15px;color:var(--muted);line-height:1.85}
.section--dark .section-desc{color:#9fb0c9}
/* ============ Hero 深色面板 ============ */
.hero-dark{
 position:relative;overflow:hidden;
 background:linear-gradient(150deg,#0b1424 0%,#10203a 52%,#0d1a2f 100%);
 padding:70px 0 78px;color:#e6edfa;
}
.hero-dark-bg{
 position:absolute;inset:0;
 background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
 opacity:.16;
}
.hero-dark::after{
 content:"";position:absolute;inset:0;
 background:radial-gradient(900px 420px at 82% 12%,rgba(58,160,255,.22),transparent 62%);
 pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:1.06fr .94fr;gap:52px;align-items:center}
.hero-h1{
 font-size:38px;line-height:1.3;font-weight:800;letter-spacing:-.6px;
 margin:16px 0 18px;color:#fff;
}
.hero-h1 .hl{color:#7fb2ff}
.hero-sub{font-size:15.5px;line-height:1.9;color:#a9bcd6;max-width:590px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.chip-row{display:flex;flex-wrap:wrap;gap:9px;margin-top:26px}
.chip{
 font-size:12.5px;color:#c3d4ec;background:rgba(255,255,255,.07);
 border:1px solid rgba(255,255,255,.14);border-radius:999px;padding:6px 14px;
 transition:background-color .18s ease,border-color .18s ease;
}
.chip:hover{background:rgba(255,255,255,.13);border-color:rgba(255,255,255,.28)}
.hero-panel{
 background:rgba(255,255,255,.055);
 border:1px solid rgba(255,255,255,.13);
 border-radius:18px;padding:22px 22px 16px;
 box-shadow:0 26px 60px rgba(3,10,22,.5);
 backdrop-filter:blur(6px);
 -webkit-backdrop-filter:blur(6px);
}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:14px}
.panel-head span:first-child{font-size:13.5px;font-weight:700;color:#dfe9f8;letter-spacing:.02em}
.panel-tag{font-size:11.5px;color:#8ec2ff;background:rgba(58,160,255,.14);border-radius:999px;padding:3px 10px}
.rank-list{display:flex;flex-direction:column;gap:12px}
.rank-item{display:grid;grid-template-columns:26px 1fr 84px 30px;align-items:center;gap:10px}
.rank-no{font-size:12px;font-weight:700;color:#6f87a8;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.rank-name{font-size:13.5px;color:#dbe6f6;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rank-bar{height:6px;border-radius:999px;background:rgba(255,255,255,.1);overflow:hidden}
.rank-bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,#3aa0ff,#7fb2ff)}
.rank-val{font-size:12.5px;color:#8ec2ff;text-align:right;font-weight:700;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.panel-foot{margin-top:16px;padding-top:12px;border-top:1px solid rgba(255,255,255,.1);font-size:11.5px;color:#7e93b1}
/* ============ 卡片与网格 ============ */
.grid{display:grid;gap:20px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.card{
 background:#fff;border:1px solid var(--line-soft);border-radius:var(--radius);
 padding:22px 22px 20px;box-shadow:var(--shadow-1);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#c9d8f8}
.card h3{font-size:16.5px;line-height:1.5;margin-bottom:9px;color:var(--ink)}
.card p{font-size:14px;line-height:1.82;color:var(--muted);margin:0}
.card-ico{
 width:40px;height:40px;border-radius:11px;display:grid;place-items:center;
 background:var(--brand-soft);color:var(--brand);margin-bottom:14px;
}
.card-ico svg{width:20px;height:20px}
.card-tag{
 display:inline-block;margin-top:14px;font-size:11.5px;font-weight:700;
 color:var(--brand);background:var(--brand-soft);border-radius:999px;padding:3px 11px;
}
/* ============ 图文解决方案 ============ */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.split-media{position:relative;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-3);border:1px solid rgba(255,255,255,.5)}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .4s ease}
.split-media:hover img{transform:scale(1.03)}
.split-media figcaption{
 position:absolute;left:14px;bottom:14px;right:14px;
 background:rgba(12,21,38,.72);color:#dce7f7;font-size:12px;
 padding:8px 12px;border-radius:10px;backdrop-filter:blur(6px);
}
.layer-list{display:flex;flex-direction:column;gap:16px;margin-top:24px}
.layer-item{display:flex;gap:14px;padding:16px 18px;background:#fff;border:1px solid var(--line-soft);border-radius:var(--radius);box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.layer-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#c9d8f8}
.layer-num{
 flex:0 0 34px;height:34px;border-radius:10px;display:grid;place-items:center;
 background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;
 font-size:13px;font-weight:800;
}
.layer-item h4{font-size:15px;margin-bottom:5px}
.layer-item p{font-size:13.5px;color:var(--muted);margin:0;line-height:1.78}
/* ============ 步骤流程 ============ */
.step-list{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;counter-reset:step}
.step{
 position:relative;background:#fff;border:1px solid var(--line-soft);border-radius:var(--radius);
 padding:26px 20px 22px;box-shadow:var(--shadow-1);counter-increment:step;
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#c9d8f8}
.step::before{
 content:"0" counter(step);
 display:block;font-size:12.5px;font-weight:800;letter-spacing:.1em;
 color:var(--brand);font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
 margin-bottom:10px;
}
.step::after{
 content:"";position:absolute;left:20px;top:44px;width:26px;height:3px;border-radius:2px;
 background:linear-gradient(90deg,var(--brand),rgba(36,86,230,0));
}
.step h3{font-size:16px;margin:3px 0 9px}
.step p{font-size:13.5px;line-height:1.8;color:var(--muted);margin:0}
/* ============ 数据条 ============ */
.stat-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.stat{
 background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);
 border-radius:var(--radius);padding:24px 20px;
 transition:background-color .2s ease,transform .2s ease,border-color .2s ease;
}
.stat:hover{background:rgba(255,255,255,.09);transform:translateY(-3px);border-color:rgba(127,178,255,.4)}
.stat-num{font-size:32px;line-height:1.2;font-weight:800;color:#fff;letter-spacing:-1px}
.stat-num small{font-size:15px;font-weight:700;color:#7fb2ff;margin-left:2px}
.stat-label{margin-top:8px;font-size:13px;color:#9fb2cb;line-height:1.7}
/* ============ 证言 ============ */
.quote-card{background:#fff;border:1px solid var(--line-soft);border-radius:var(--radius);padding:24px 22px;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.quote-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#c9d8f8}
.quote-text{font-size:14px;line-height:1.9;color:var(--ink-soft);margin:0 0 16px}
.quote-meta{display:flex;align-items:center;gap:11px}
.avatar{
 width:36px;height:36px;border-radius:50%;flex:0 0 36px;display:grid;place-items:center;
 background:var(--brand-soft);color:var(--brand);font-weight:800;font-size:13.5px;
}
.quote-name{font-size:13.5px;font-weight:700;color:var(--ink)}
.quote-role{font-size:12px;color:var(--muted)}
.stars{display:flex;gap:2px;margin-bottom:14px;color:#f0b03c}
.stars svg{width:14px;height:14px}
/* ============ 适用人群 ============ */
.audience{border-radius:var(--radius);border:1px solid var(--line-soft);background:#fff;overflow:hidden;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.audience:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#c9d8f8}
.audience-top{height:4px;background:linear-gradient(90deg,var(--brand),var(--brand-2))}
.audience-body{padding:22px 22px 20px}
.audience-body h3{font-size:16px;margin-bottom:9px}
.audience-body p{font-size:13.5px;line-height:1.85;color:var(--muted);margin:0}
.audience-body ul{margin-top:14px;display:flex;flex-direction:column;gap:8px}
.audience-body li{position:relative;padding-left:18px;font-size:13px;color:var(--ink-soft);line-height:1.7}
.audience-body li::before{
 content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;
 background:var(--brand-2);
}
/* ============ 资讯列表 ============ */
.news-wrap{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.news-item{
 display:flex;gap:16px;align-items:flex-start;
 background:#fff;border:1px solid var(--line-soft);border-radius:var(--radius);
 padding:20px 20px 18px;box-shadow:var(--shadow-1);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#c9d8f8}
.news-dot{
 flex:0 0 38px;height:38px;border-radius:11px;display:grid;place-items:center;
 background:var(--brand-soft);color:var(--brand);
}
.news-dot svg{width:18px;height:18px}
.news-body h3{font-size:15px;line-height:1.6;margin-bottom:6px;color:var(--ink)}
.news-item:hover .news-body h3{color:var(--brand)}
.news-body p{font-size:13px;line-height:1.78;color:var(--muted);margin:0 0 8px}
.news-meta{display:flex;flex-wrap:wrap;gap:8px;font-size:11.5px;color:#8595ad}
.news-meta span{background:#f2f5fc;border-radius:999px;padding:2px 9px}
.news-empty{
 grid-column:1/-1;text-align:center;padding:36px 20px;color:var(--muted);
 background:#fff;border:1px dashed var(--line);border-radius:var(--radius);font-size:14px;
}
/* ============ CTA ============ */
.cta-band{
 position:relative;overflow:hidden;border-radius:var(--radius-lg);
 background:linear-gradient(135deg,#12213a 0%,#1a3a7a 58%,#2456e6 100%);
 padding:52px 48px;color:#fff;box-shadow:var(--shadow-3);
}
.cta-band::after{
 content:"";position:absolute;right:-90px;top:-90px;width:320px;height:320px;border-radius:50%;
 background:radial-gradient(circle,rgba(58,160,255,.5),transparent 66%);
}
.cta-inner{position:relative;display:grid;grid-template-columns:1.4fr .6fr;gap:34px;align-items:center}
.cta-band h2{font-size:27px;line-height:1.4;margin-bottom:12px;color:#fff}
.cta-band p{font-size:14.5px;line-height:1.9;color:#c6d6ee;margin:0;max-width:620px}
.cta-actions{display:flex;flex-direction:column;gap:12px;align-items:stretch}
/* ============ 页脚 ============ */
.site-footer{background:#0a1120;color:#93a4bd;padding:58px 0 26px;border-top:1px solid #16233a}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:800;color:#fff;margin-bottom:14px}
.footer-desc{font-size:13.5px;line-height:1.9;color:#8496b0;max-width:420px;margin:0}
.footer-col h4{font-size:13.5px;color:#dbe6f6;margin-bottom:14px;letter-spacing:.02em}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:13.5px;color:#8496b0;transition:color .18s ease,transform .18s ease;width:fit-content}
.footer-links a:hover{color:#7fb2ff;transform:translateX(3px)}
.footer-bottom{
 margin-top:44px;padding-top:20px;border-top:1px solid #16233a;
 display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
 font-size:12.5px;color:#66788f;
}
/* ============ 响应式 ============ */
@media (max-width:1024px){
 .hero-grid{grid-template-columns:1fr;gap:38px}
 .hero-h1{font-size:33px}
 .split{grid-template-columns:1fr;gap:32px}
 .step-list{grid-template-columns:repeat(2,minmax(0,1fr))}
 .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
 .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
 .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
 .cta-inner{grid-template-columns:1fr;gap:24px}
 .cta-actions{flex-direction:row;flex-wrap:wrap}
 .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
 .footer-brand{margin-bottom:12px}
}
@media (max-width:920px){
 .nav-tabs{
  position:absolute;top:64px;left:22px;right:22px;margin:0;
  flex-direction:column;align-items:stretch;gap:4px;
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:8px;display:none;box-shadow:var(--shadow-2);
 }
 .nav-tabs.is-open{display:flex}
 .nav-tab{padding:10px 14px;border-radius:10px;text-align:left}
 .nav-tab.is-active{box-shadow:none;background:var(--brand-soft)}
 .nav-toggle{display:inline-flex}
 .header-cta{display:none}
}
@media (max-width:768px){
 .section{padding:54px 0}
 .hero-dark{padding:52px 0 58px}
 .hero-h1{font-size:28px;line-height:1.36}
 .hero-sub{font-size:14.5px}
 .section-title{font-size:23px}
 .section-head{margin-bottom:28px}
 .grid-2,.grid-3,.grid-4,.news-wrap{grid-template-columns:1fr}
 .rank-item{grid-template-columns:24px 1fr 60px 28px;gap:8px}
 .rank-name{font-size:12.5px}
 .cta-band{padding:34px 24px;border-radius:16px}
 .cta-band h2{font-size:22px}
 .footer-grid{grid-template-columns:1fr;gap:28px}
 .footer-bottom{flex-direction:column;gap:6px}
}
@media (max-width:520px){
 .container{padding:0 16px}
 .header-inner{height:60px;gap:10px}
 .brand{font-size:14px}
 .brand-mark{width:29px;height:29px;flex:0 0 29px}
 .nav-toggle{width:40px;height:40px}
 .nav-tabs{top:60px;left:16px;right:16px}
 .hero-h1{font-size:24px}
 .step-list,.stat-strip{grid-template-columns:1fr}
 .btn-lg{padding:12px 18px;font-size:14px}
 .hero-actions{gap:10px}
 .hero-actions .btn{width:100%}
 .cta-actions{flex-direction:column}
 .cta-actions .btn{width:100%}
 .news-item{padding:16px}
 .stat-num{font-size:27px}
}

/* roulang page: category3 */
:root{
 --brand:#2456e6;
 --brand-2:#3aa0ff;
 --brand-dark:#1a44c4;
 --brand-soft:#eef3ff;
 --ink:#0f172a;
 --ink-soft:#334155;
 --muted:#64748b;
 --line:#e4eaf5;
 --line-soft:#eef2fb;
 --bg:#f6f8fd;
 --white:#ffffff;
 --dark:#0c1526;
 --dark-2:#111e35;
 --warn:#e2795f;
 --ok:#2f9e6f;
 --radius-sm:10px;
 --radius:14px;
 --radius-lg:20px;
 --shadow-1:0 1px 2px rgba(15,23,42,.05),0 2px 8px rgba(15,23,42,.04);
 --shadow-2:0 10px 28px rgba(15,23,42,.09);
 --shadow-3:0 24px 56px rgba(15,23,42,.16);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
 margin:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
 font-size:15px;line-height:1.78;color:var(--ink);background:var(--bg);
 -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{
 outline:2px solid var(--brand-2);outline-offset:2px;border-radius:8px;
}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 22px}

/* ============ 顶部导航 ============ */
.site-header{
 position:sticky;top:0;z-index:80;
 background:rgba(255,255,255,.94);
 backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
 border-bottom:1px solid var(--line-soft);
 transition:box-shadow .22s ease;
}
.site-header.is-stuck{box-shadow:0 8px 24px rgba(15,23,42,.08)}
.header-inner{display:flex;align-items:center;gap:16px;height:64px;position:relative}
.brand{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:800;letter-spacing:.2px;white-space:nowrap;color:var(--ink)}
.brand-mark{
 width:32px;height:32px;border-radius:9px;flex:0 0 32px;
 background:linear-gradient(135deg,var(--brand),var(--brand-2));
 display:grid;place-items:center;color:#fff;
 box-shadow:0 6px 14px rgba(36,86,230,.32);
}
.brand-mark svg{width:18px;height:18px}
.nav-tabs{
 display:flex;align-items:center;gap:4px;margin-left:auto;
 background:#f1f4fb;border:1px solid var(--line-soft);
 border-radius:999px;padding:4px;
}
.nav-tab{
 font-size:13.5px;padding:6px 15px;border-radius:999px;color:#475569;
 white-space:nowrap;
 transition:color .18s ease,background-color .18s ease,box-shadow .18s ease;
}
.nav-tab:hover{color:var(--brand);background:#fff}
.nav-tab.is-active{background:#fff;color:var(--brand);font-weight:700;box-shadow:0 2px 8px rgba(15,23,42,.09)}
.header-cta{margin-left:12px;white-space:nowrap}
.nav-toggle{
 display:none;align-items:center;justify-content:center;
 width:42px;height:42px;margin-left:auto;
 border-radius:11px;border:1px solid var(--line);background:#fff;cursor:pointer;
 transition:border-color .18s ease,box-shadow .18s ease;
}
.nav-toggle:hover{border-color:#c7d5f5;box-shadow:var(--shadow-1)}
.nav-toggle svg{width:20px;height:20px}

/* ============ 按钮 ============ */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:7px;
 border-radius:10px;border:1px solid transparent;
 font-size:14px;font-weight:600;padding:10px 18px;cursor:pointer;white-space:nowrap;
 transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn svg{width:16px;height:16px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(36,86,230,.28)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:0 12px 24px rgba(36,86,230,.34)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(36,86,230,.28)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:#c3d3f7;color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow-1)}
.btn-light{background:#fff;color:var(--brand);box-shadow:0 8px 20px rgba(0,0,0,.18)}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 14px 28px rgba(0,0,0,.24);background:#f3f7ff}
.btn-lg{padding:13px 24px;font-size:15px;border-radius:12px}
.btn-block{width:100%}

/* ============ 通用板块 ============ */
.section{padding:74px 0;position:relative}
.section--white{background:#fff}
.section--alt{background:#f6f8fd}
.section--tint{background:linear-gradient(180deg,#f2f6ff 0%,#f8faff 100%)}
.section--dark{background:var(--dark);color:#e2e8f5}
.section-head{max-width:780px;margin-bottom:38px}
.section-head.is-center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
 display:inline-flex;align-items:center;gap:7px;
 font-size:12.5px;font-weight:700;letter-spacing:.06em;
 color:var(--brand);background:var(--brand-soft);
 padding:5px 13px;border-radius:999px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand)}
.eyebrow--light{background:rgba(58,160,255,.16);color:#8ec2ff}
.eyebrow--light::before{background:#8ec2ff}
.section-title{font-size:29px;line-height:1.36;font-weight:800;letter-spacing:-.2px;margin:14px 0 12px;color:var(--ink)}
.section--dark .section-title{color:#fff}
.section-desc{font-size:15px;color:var(--muted);line-height:1.85}
.section--dark .section-desc{color:#9fb0c9}

/* ============ Hero（分类页） ============ */
.hero{position:relative;overflow:hidden;background:#fbfcff;padding:62px 0 76px}
.hero-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;opacity:.15}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(251,252,255,.5) 0%,rgba(247,249,252,.95) 64%,var(--bg) 100%)}
.hero-inner{position:relative;display:grid;grid-template-columns:1.06fr .94fr;gap:52px;align-items:center}
.crumb{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--muted);margin-bottom:16px}
.crumb a:hover{color:var(--brand)}
.crumb span{color:#b6c2d8}
.hero-title{font-size:38px;line-height:1.3;font-weight:800;letter-spacing:-.5px;margin:12px 0 18px;color:var(--ink)}
.hero-title .hl{color:var(--brand)}
.hero-lead{font-size:15.5px;line-height:1.9;color:var(--ink-soft);max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.chip-row{display:flex;flex-wrap:wrap;gap:9px;margin-top:26px}
.chip{font-size:12.5px;color:#3b5478;background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 14px;box-shadow:var(--shadow-1)}

/* 火力面板 */
.power-panel{
 position:relative;background:linear-gradient(158deg,#0c1526 0%,#14243f 58%,#122a4d 100%);
 border-radius:var(--radius-lg);padding:24px 24px 20px;color:#dbe6f7;
 box-shadow:var(--shadow-3);border:1px solid rgba(120,165,255,.16);
}
.power-panel::before{
 content:"";position:absolute;inset:0;border-radius:var(--radius-lg);
 background:radial-gradient(600px 220px at 88% -10%,rgba(58,160,255,.24),transparent 70%);
 pointer-events:none;
}
.power-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px;position:relative}
.power-title{font-size:14.5px;font-weight:700;color:#fff;letter-spacing:.02em}
.power-tag{font-size:11.5px;color:#9dc0f0;border:1px solid rgba(120,165,255,.32);border-radius:999px;padding:3px 10px}
.power-row{position:relative;margin-bottom:15px}
.power-row-top{display:flex;align-items:baseline;justify-content:space-between;gap:10px;font-size:12.8px;margin-bottom:6px}
.power-name{color:#e6eefb;font-weight:600}
.power-val{color:#7fb2ff;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:12px}
.power-hint{font-size:11.8px;color:#8798b6;margin-top:5px;line-height:1.6}
.bar{height:7px;border-radius:999px;background:rgba(255,255,255,.1);overflow:hidden}
.bar span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--brand-2),#7fb2ff)}
.bar span.is-hot{background:linear-gradient(90deg,#f0a85a,#f2c07a)}
.bar span.is-lock{background:linear-gradient(90deg,#63d3a3,#8ce7bf)}
.power-foot{position:relative;margin-top:16px;padding-top:14px;border-top:1px solid rgba(255,255,255,.1);font-size:12px;color:#8798b6;line-height:1.7}

/* ============ 网格与卡片 ============ */
.grid{display:grid;gap:20px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.card{
 background:#fff;border:1px solid var(--line-soft);border-radius:var(--radius);
 box-shadow:var(--shadow-1);padding:22px;
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#cfdcf9}
.card-title{font-size:16.5px;font-weight:700;color:var(--ink);margin:14px 0 8px;line-height:1.5}
.card-text{font-size:14px;color:var(--muted);line-height:1.8}
.icon-box{
 width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
 background:var(--brand-soft);color:var(--brand);border:1px solid #dee8ff;
}
.icon-box svg{width:21px;height:21px}
.icon-box.is-warm{background:#fff4ec;color:#d9803f;border-color:#ffe3cd}
.icon-box.is-green{background:#ecfaf3;color:var(--ok);border-color:#d4f0e2}
.icon-box.is-dark{background:rgba(58,160,255,.14);color:#8ec2ff;border-color:rgba(120,165,255,.28)}
.tag-row{display:flex;flex-wrap:wrap;gap:7px;margin-top:14px}
.tag{font-size:11.8px;color:#4b6085;background:#f2f6fd;border:1px solid var(--line-soft);border-radius:999px;padding:3px 10px}
.tag.is-brand{color:var(--brand);background:var(--brand-soft);border-color:#dee8ff}

/* 痛点 + 解法 */
.split{display:grid;grid-template-columns:.92fr 1.08fr;gap:26px;align-items:start}
.pain-list{display:grid;gap:12px}
.pain-item{
 display:flex;gap:13px;background:#fff;border:1px solid var(--line-soft);
 border-radius:var(--radius);padding:16px 18px;box-shadow:var(--shadow-1);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.pain-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#d7e3fb}
.pain-dot{
 flex:0 0 30px;width:30px;height:30px;border-radius:9px;display:grid;place-items:center;
 background:#fff1ec;color:var(--warn);border:1px solid #ffdfd4;font-weight:800;font-size:13px;
}
.pain-item h3{font-size:14.6px;font-weight:700;margin-bottom:4px}
.pain-item p{font-size:13.4px;color:var(--muted);line-height:1.75}
.solution-card{
 background:#fff;border:1px solid var(--line-soft);border-radius:var(--radius-lg);
 box-shadow:var(--shadow-2);overflow:hidden;
}
.solution-card img{width:100%;height:190px;object-fit:cover}
.solution-body{padding:22px}
.solution-body h3{font-size:18px;font-weight:800;margin-bottom:10px}
.solution-body p{font-size:14px;color:var(--muted);line-height:1.85}
.solution-list{margin-top:16px;display:grid;gap:10px}
.solution-list li{
 display:flex;gap:10px;font-size:13.8px;color:var(--ink-soft);
 padding-bottom:10px;border-bottom:1px dashed var(--line);
}
.solution-list li:last-child{border-bottom:0;padding-bottom:0}
.solution-list b{color:var(--brand);flex:0 0 auto}

/* 步骤 */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;counter-reset:step}
.step{
 position:relative;background:#fff;border:1px solid var(--line-soft);border-radius:var(--radius);
 padding:24px 20px 20px;box-shadow:var(--shadow-1);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#cfdcf9}
.step-num{
 width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
 background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;
 font-size:14px;font-weight:800;box-shadow:0 6px 14px rgba(36,86,230,.28);
}
.step h3{font-size:15.5px;font-weight:700;margin:14px 0 8px}
.step p{font-size:13.5px;color:var(--muted);line-height:1.78}
.step-meta{font-size:11.8px;color:var(--brand);font-weight:700;margin-top:12px;letter-spacing:.02em}

/* 数据 */
.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;margin-top:8px}
.stat{
 background:rgba(255,255,255,.05);border:1px solid rgba(120,165,255,.2);
 border-radius:var(--radius);padding:22px 20px;
 transition:background-color .2s ease,transform .2s ease,border-color .2s ease;
}
.stat:hover{background:rgba(255,255,255,.09);transform:translateY(-3px);border-color:rgba(120,165,255,.4)}
.stat-num{font-size:30px;font-weight:800;color:#fff;letter-spacing:-.6px;line-height:1.2}
.stat-num small{font-size:14px;font-weight:700;color:#8ec2ff;margin-left:3px}
.stat-label{font-size:13.4px;color:#9fb0c9;margin-top:8px;line-height:1.7}

/* 证言 */
.quote-card{
 background:#fff;border:1px solid var(--line-soft);border-radius:var(--radius);
 padding:22px;box-shadow:var(--shadow-1);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.quote-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#cfdcf9}
.quote-text{font-size:14.2px;color:var(--ink-soft);line-height:1.85}
.quote-foot{display:flex;align-items:center;gap:11px;margin-top:16px;padding-top:14px;border-top:1px solid var(--line-soft)}
.avatar{
 width:36px;height:36px;border-radius:50%;flex:0 0 36px;display:grid;place-items:center;
 background:linear-gradient(135deg,#e8f0ff,#d6e5ff);color:var(--brand);font-weight:800;font-size:13px;
}
.quote-name{font-size:13.4px;font-weight:700}
.quote-role{font-size:11.8px;color:var(--muted)}

/* 场景 */
.scene-card{display:flex;flex-direction:column;height:100%}
.scene-card .card-text{flex:1}

/* 资讯列表 */
.news-grid{margin-top:6px}
.news-card{display:flex;flex-direction:column;gap:0}
.news-top{display:flex;align-items:center;gap:8px;font-size:11.8px;color:var(--muted);margin-bottom:10px}
.news-cat{color:var(--brand);background:var(--brand-soft);border:1px solid #dee8ff;border-radius:999px;padding:2px 9px;font-weight:700}
.news-title{
 font-size:15.6px;font-weight:700;line-height:1.58;color:var(--ink);
 display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card:hover .news-title{color:var(--brand)}
.news-excerpt{
 font-size:13.5px;color:var(--muted);line-height:1.78;margin-top:9px;
 display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-more{display:flex;justify-content:center;margin-top:30px}
.empty-note{
 text-align:center;color:var(--muted);font-size:14px;background:#fff;
 border:1px dashed var(--line);border-radius:var(--radius);padding:34px 20px;
}

/* FAQ */
.faq-list{display:grid;gap:12px;max-width:900px;margin:0 auto}
.faq-item{
 background:#fff;border:1px solid var(--line-soft);border-radius:var(--radius);
 box-shadow:var(--shadow-1);overflow:hidden;
 transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:#cfdcf9;box-shadow:var(--shadow-2)}
.faq-item summary{
 list-style:none;cursor:pointer;padding:17px 20px;
 display:flex;align-items:center;justify-content:space-between;gap:14px;
 font-size:15px;font-weight:700;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-arrow{
 flex:0 0 22px;width:22px;height:22px;border-radius:50%;
 display:grid;place-items:center;background:var(--brand-soft);color:var(--brand);
 transition:transform .2s ease;
}
.faq-item[open] .faq-arrow{transform:rotate(180deg)}
.faq-arrow svg{width:13px;height:13px}
.faq-answer{padding:0 20px 18px;font-size:14px;color:var(--muted);line-height:1.85}

/* CTA */
.cta-band{position:relative;overflow:hidden;background:var(--dark);color:#e6eefb;padding:70px 0}
.cta-band .cta-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-5.webp') center/cover no-repeat;opacity:.22}
.cta-band .cta-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(12,21,38,.96) 0%,rgba(12,21,38,.78) 58%,rgba(17,30,53,.68) 100%)}
.cta-inner{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center}
.cta-inner h2{font-size:30px;font-weight:800;line-height:1.36;color:#fff;margin:14px 0 14px;letter-spacing:-.3px}
.cta-inner p{font-size:14.6px;color:#a9bacc;line-height:1.9}
.cta-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.cta-point{font-size:12.4px;color:#c9dbf3;background:rgba(255,255,255,.07);border:1px solid rgba(120,165,255,.24);border-radius:999px;padding:5px 13px}
.cta-form{
 background:rgba(255,255,255,.06);border:1px solid rgba(120,165,255,.22);
 border-radius:var(--radius-lg);padding:24px;backdrop-filter:blur(6px);
}
.cta-form h3{font-size:16px;font-weight:800;color:#fff;margin-bottom:6px}
.cta-form .form-note{font-size:12.6px;color:#93a7c0;margin-bottom:16px}
.field{margin-bottom:13px}
.field label{display:block;font-size:12.4px;color:#b6c8dd;margin-bottom:6px}
.field input,.field select{
 width:100%;padding:11px 13px;border-radius:10px;
 border:1px solid rgba(120,165,255,.26);background:rgba(12,21,38,.55);
 color:#e8f0fb;font-size:14px;line-height:1.4;
 transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease;
}
.field input::placeholder{color:#7f93b3}
.field input:focus,.field select:focus{
 border-color:var(--brand-2);background:rgba(12,21,38,.78);
 box-shadow:0 0 0 3px rgba(58,160,255,.18);outline:none;
}
.form-msg{font-size:12.6px;color:#8ce7bf;margin-top:10px;min-height:18px}

/* ============ 页脚 ============ */
.site-footer{background:#0a1220;color:#93a7c0;padding:56px 0 26px;border-top:1px solid rgba(255,255,255,.06)}
.footer-grid{display:grid;grid-template-columns:1.4fr .8fr .8fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:15px;font-weight:800;margin-bottom:14px}
.footer-desc{font-size:13.4px;line-height:1.9;color:#8ba0ba;max-width:430px}
.footer-col h4{font-size:13.6px;color:#fff;font-weight:700;margin-bottom:14px;letter-spacing:.02em}
.footer-links{display:grid;gap:10px}
.footer-links a{font-size:13.4px;color:#8ba0ba;transition:color .18s ease,transform .18s ease}
.footer-links a:hover{color:#8ec2ff}
.footer-bottom{
 margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);
 display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
 font-size:12.4px;color:#6f849d;
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
 .hero-inner{grid-template-columns:1fr;gap:38px}
 .hero-title{font-size:33px}
 .split{grid-template-columns:1fr}
 .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
 .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
 .cta-inner{grid-template-columns:1fr;gap:32px}
 .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:900px){
 .nav-toggle{display:flex}
 .header-cta{display:none}
 .nav-tabs{
  position:absolute;top:64px;left:0;right:0;
  flex-direction:column;align-items:stretch;gap:4px;
  margin:0;padding:10px;border-radius:0 0 14px 14px;
  background:#fff;border:1px solid var(--line);
  box-shadow:0 18px 40px rgba(15,23,42,.14);
  display:none;
 }
 .nav-tabs.is-open{display:flex}
 .nav-tab{padding:11px 14px;border-radius:10px;font-size:14px}
 .nav-tab.is-active{background:var(--brand-soft)}
}
@media (max-width:768px){
 .section{padding:54px 0}
 .hero{padding:44px 0 56px}
 .hero-title{font-size:28px;letter-spacing:-.3px}
 .section-title{font-size:23px}
 .grid-3{grid-template-columns:1fr}
 .grid-2{grid-template-columns:1fr}
 .stat-num{font-size:26px}
 .cta-inner h2{font-size:24px}
 .footer-bottom{flex-direction:column;gap:6px}
}
@media (max-width:520px){
 .container{padding:0 16px}
 .hero-title{font-size:25px}
 .section-title{font-size:21px}
 .steps{grid-template-columns:1fr}
 .stat-grid{grid-template-columns:1fr}
 .grid-4{grid-template-columns:1fr}
 .footer-grid{grid-template-columns:1fr}
 .card,.step,.quote-card{padding:18px}
 .btn{width:100%}
 .hero-actions .btn{width:100%}
 .hero-actions{flex-direction:column}
}