/* ============ 基础 ============ */
:root{
  --ink:#0b0b0b;
  --ink-2:#1c1c1c;
  --muted:#5f5f5f;
  --line:#e4e4e0;
  --paper:#f6f6f3;
  --white:#fff;
  --red:#e4002b;
  --red-dark:#c00024;
  --green:#0a7c53;
  --radius:4px;
  --wrap:1220px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;color:var(--ink);background:var(--white);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","PingFang SC","Hiragino Sans GB",Roboto,Arial,sans-serif;
  font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
a:hover{color:var(--red)}
h1,h2,h3,h4{line-height:1.25;margin:0 0 .6em;font-weight:700;letter-spacing:-.01em}
h1{font-size:clamp(30px,4vw,52px)}
h2{font-size:clamp(24px,2.6vw,36px)}
h3{font-size:19px}
p{margin:0 0 1em}
ul{margin:0 0 1em;padding-left:1.2em}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.section{padding:64px 0}
.section--paper{background:var(--paper)}
.section--dark{background:#0f1115;color:#fff}
.section--dark h2,.section--dark h3{color:#fff}
.lead{font-size:18px;color:var(--muted);max-width:820px}
.section--dark .lead{color:#c9cbcf}
.eyebrow{font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--red);font-weight:700;margin-bottom:12px}
.center{text-align:center}
.center .lead{margin-left:auto;margin-right:auto}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius);font-weight:700;font-size:15px;
  border:1px solid transparent;cursor:pointer;transition:.18s ease;white-space:nowrap}
.btn--primary{background:var(--red);color:#fff}
.btn--primary:hover{background:var(--red-dark);color:#fff}
.btn--ghost{border-color:var(--ink);color:var(--ink);background:transparent}
.btn--ghost:hover{background:var(--ink);color:#fff}
.btn--light{border-color:rgba(255,255,255,.6);color:#fff;background:transparent}
.btn--light:hover{background:#fff;color:var(--ink)}
.btn--sm{padding:9px 18px;font-size:14px}
.btn-group{display:flex;gap:14px;flex-wrap:wrap}
.center .btn-group{justify-content:center}

/* ============ 顶部风险条 ============ */
.riskbar{background:#111;color:#c8c8c8;font-size:12.5px;line-height:1.5;padding:9px 0}
.riskbar .wrap{display:flex;gap:10px;align-items:flex-start}
.riskbar strong{color:#fff}

/* ============ 头部导航 ============ */
.site-header{position:sticky;top:0;z-index:900;background:#fff;border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:28px;height:72px}
.logo{font-size:26px;font-weight:800;letter-spacing:-.04em;color:var(--ink);flex:none}
.logo span{color:var(--red)}
.nav-menu{display:flex;align-items:center;gap:26px;margin-left:8px;flex:1}
.nav-item{position:relative}
.nav-link{font-size:15px;font-weight:600;padding:10px 0;display:inline-flex;align-items:center;gap:6px;color:var(--ink)}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-24px;height:3px;background:var(--red);transform:scaleX(0);transition:.2s}
.nav-item:hover .nav-link::after{transform:scaleX(1)}
.nav-link .caret{width:7px;height:7px;border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;transform:rotate(45deg) translateY(-2px);opacity:.6}
.dropdown{position:absolute;top:calc(100% + 22px);left:-18px;min-width:250px;background:#fff;border:1px solid var(--line);
  box-shadow:0 18px 40px rgba(0,0,0,.12);padding:12px;opacity:0;visibility:hidden;transform:translateY(6px);transition:.18s}
.nav-item:hover .dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.dropdown a{display:block;padding:9px 12px;font-size:14.5px;border-radius:3px;color:var(--ink-2)}
.dropdown a:hover{background:var(--paper);color:var(--red)}
.nav-actions{display:flex;align-items:center;gap:10px;flex:none}
.burger{display:none;width:42px;height:42px;border:1px solid var(--line);background:#fff;border-radius:var(--radius);cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:5px}
.burger i{display:block;width:18px;height:2px;background:var(--ink);transition:.2s}

/* ============ Hero ============ */
.hero{position:relative;background:#0f1115;color:#fff;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;
  background-image:linear-gradient(105deg,rgba(10,11,14,.96) 0%,rgba(10,11,14,.86) 45%,rgba(10,11,14,.55) 100%),url("../img/hero.jpg");
  background-size:cover;background-position:center right;opacity:.95}
.hero--plain::before{background-image:linear-gradient(120deg,#0b0d11,#1b2029)}
.hero-inner{position:relative;padding:92px 0 84px;max-width:720px}
.hero h1{color:#fff;margin-bottom:18px}
.hero p{color:#d3d5d9;font-size:18px;max-width:640px}
.hero .badges{display:flex;gap:26px;flex-wrap:wrap;margin:26px 0 0;padding:0;list-style:none}
.hero .badges li{font-size:13.5px;color:#c9cbcf;border-left:2px solid var(--red);padding-left:12px;line-height:1.5}
.hero .badges strong{display:block;color:#fff;font-size:18px}

/* ============ 卡片栅格 ============ */
.grid{display:grid;gap:22px}
.grid--2{grid-template-columns:repeat(2,1fr)}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:.2s}
.card:hover{border-color:#c9c9c4;box-shadow:0 12px 30px rgba(0,0,0,.07)}
.card h3{margin-bottom:8px}
.card p{margin:0;color:var(--muted);font-size:15px}
.card .ico{width:44px;height:44px;margin-bottom:16px;object-fit:contain}
.card--media{padding:0;overflow:hidden;display:flex;flex-direction:column}
.card--media img{width:100%;height:180px;object-fit:cover}
.card--media .body{padding:22px 24px 26px}
.card--media p{margin-top:6px}
.tag{display:inline-block;font-size:12px;font-weight:700;color:var(--red);letter-spacing:.06em;margin-bottom:10px;text-transform:uppercase}

/* ============ 表格 ============ */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
table.data{width:100%;border-collapse:collapse;font-size:14.5px;min-width:560px}
table.data th,table.data td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line)}
table.data thead th{background:var(--paper);font-size:13px;font-weight:700;color:var(--ink);white-space:nowrap}
table.data tbody tr:hover{background:#fafaf8}
table.data td.num{font-variant-numeric:tabular-nums}
.table-note{font-size:13px;color:var(--muted);margin-top:12px}
.pill{display:inline-block;padding:2px 10px;border-radius:999px;font-size:12px;font-weight:700;background:#eef6f2;color:var(--green)}
.pill--muted{background:#f1f1ee;color:#777}

/* ============ 内容块 ============ */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.split img{border-radius:var(--radius)}
.feature-list{list-style:none;padding:0;margin:0}
.feature-list li{position:relative;padding-left:30px;margin-bottom:14px;color:var(--muted)}
.feature-list li::before{content:"";position:absolute;left:0;top:9px;width:14px;height:8px;border-left:2.4px solid var(--red);border-bottom:2.4px solid var(--red);transform:rotate(-45deg)}
.feature-list strong{color:var(--ink)}
.quote{border-left:4px solid var(--red);padding:6px 0 6px 22px;color:var(--ink-2);font-size:17px}
.steps{counter-reset:s;display:grid;gap:18px;grid-template-columns:repeat(3,1fr)}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;counter-increment:s}
.step::before{content:counter(s,decimal-leading-zero);display:block;font-size:13px;font-weight:800;color:var(--red);letter-spacing:.1em;margin-bottom:10px}
.step h3{font-size:17px;margin-bottom:6px}
.step p{margin:0;color:var(--muted);font-size:14.5px}

/* ============ CTA ============ */
.cta{background:linear-gradient(115deg,#101216,#1d232c);color:#fff;padding:58px 0}
.cta .wrap{display:flex;justify-content:space-between;align-items:center;gap:36px;flex-wrap:wrap}
.cta h2{color:#fff;margin:0 0 8px}
.cta p{color:#c9cbcf;margin:0;max-width:620px}

/* ============ 新闻 ============ */
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column}
.news-card img{height:170px;width:100%;object-fit:cover}
.news-card .body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1}
.news-card h3{font-size:16.5px;margin-bottom:10px}
.news-card .meta{margin-top:auto;font-size:12.5px;color:var(--muted)}

/* ============ 联系我们 / 二维码 ============ */
.qr-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;text-align:center}
.qr-box img{width:auto;height:340px;object-fit:contain;margin:0 auto 14px;border:1px solid var(--line);padding:8px;background:#fff}
.qr-box strong{display:block;font-size:16px;margin-bottom:4px}
.qr-box span{font-size:13.5px;color:var(--muted)}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start}
.contact-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px}
.contact-panel h3{margin-bottom:10px}

/* ============ 页脚 ============ */
.site-footer{background:#0b0b0b;color:#a9a9a9;padding:56px 0 28px;font-size:14px}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr 1fr;gap:34px;padding-bottom:36px;border-bottom:1px solid #232323}
.footer-brand .logo{color:#fff;margin-bottom:14px;font-size:24px}
.footer-brand p{color:#8f8f8f;font-size:13.5px;margin:0 0 16px;max-width:290px}
.footer-qr{display:flex;gap:14px;align-items:center}
.footer-qr img{width:auto;height:340px;object-fit:contain;background:#fff;padding:5px;border-radius:3px}
.footer-qr div{font-size:12.5px;line-height:1.6;color:#9a9a9a}
.footer-qr strong{color:#fff;display:block;font-size:13.5px;margin-bottom:2px}
.footer-col h4{color:#fff;font-size:14px;margin:0 0 14px;letter-spacing:.02em}
.footer-col a{display:block;color:#a0a0a0;font-size:13.5px;padding:5px 0}
.footer-col a:hover{color:#fff}
.footer-legal{padding-top:24px;font-size:12px;line-height:1.7;color:#7d7d7d}
.footer-legal p{margin:0 0 10px}
.footer-legal strong{color:#bdbdbd}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:#8a8a8a;margin-top:18px;padding-top:18px;border-top:1px solid #232323}

/* ============ 面包屑 ============ */
.crumbs{background:var(--paper);border-bottom:1px solid var(--line);font-size:13px;color:var(--muted)}
.crumbs .wrap{padding-top:12px;padding-bottom:12px}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--red)}
.crumbs span{color:var(--ink);font-weight:600}
.crumbs .sep{margin:0 8px;opacity:.5}

/* ============ 回顶 ============ */
.totop{position:fixed;right:22px;bottom:96px;width:44px;height:44px;border-radius:50%;background:#111;color:#fff;border:none;
  cursor:pointer;display:none;align-items:center;justify-content:center;font-size:16px;z-index:800;box-shadow:0 8px 20px rgba(0,0,0,.2)}
.totop.show{display:flex}

/* ============ 响应式 ============ */
@media (max-width:1080px){
  .grid--4{grid-template-columns:repeat(2,1fr)}
  .footer-top{grid-template-columns:1.2fr 1fr 1fr;row-gap:32px}
  .split{grid-template-columns:1fr;gap:32px}
}
@media (max-width:900px){
  .burger{display:flex}
  .nav-menu{position:fixed;left:0;right:0;top:0;bottom:0;background:#fff;flex-direction:column;align-items:flex-start;
    padding:88px 24px 32px;gap:4px;transform:translateX(-100%);transition:.24s;overflow-y:auto;z-index:950}
  .nav-menu.open{transform:translateX(0)}
  .nav-item{width:100%;border-bottom:1px solid var(--line)}
  .nav-link{display:flex;width:100%;padding:15px 0;justify-content:space-between}
  .nav-link::after{display:none}
  .dropdown{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:none;padding:0 0 12px 12px;display:none}
  .nav-item.sub-open .dropdown{display:block}
  .nav-actions{margin-left:auto}
  .grid--3,.grid--2,.steps,.contact-grid{grid-template-columns:1fr}
  .hero-inner{padding:60px 0 56px}
  .section{padding:44px 0}
  .footer-top{grid-template-columns:1fr 1fr}
  .cta .wrap{flex-direction:column;align-items:flex-start}
}
@media (max-width:560px){
  .grid--4{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr}
  .riskbar{font-size:11.5px}
  .hero .badges{gap:16px}
}