/* 网站统计 · 落地首页样式 */
*{margin:0;padding:0;box-sizing:border-box}
body{font:14px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:#2c3e50;background:#fff}
a{text-decoration:none;color:inherit}
.wrap{max-width:1120px;margin:0 auto;padding:0 22px}

/* 导航 */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid #eef1f6}
.nav .wrap{display:flex;align-items:center;height:60px}
.brand{font-size:18px;font-weight:700;color:#1f2d3d;display:flex;align-items:center;gap:8px}
.brand .dot{width:10px;height:10px;border-radius:3px;background:linear-gradient(135deg,#409eff,#2f6fed);display:inline-block}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:14px}
.nav-right a{font-size:14px;color:#475669}
.nav-right a:hover{color:#409eff}
.btn-primary{display:inline-block;background:linear-gradient(135deg,#409eff,#2f6fed);color:#fff!important;padding:9px 22px;border-radius:6px;font-size:14px;font-weight:600;transition:transform .15s,box-shadow .15s;box-shadow:0 4px 14px rgba(64,158,255,.28)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 6px 20px rgba(64,158,255,.36)}
.btn-ghost{display:inline-block;padding:9px 22px;border-radius:6px;border:1px solid rgba(255,255,255,.5);color:#fff!important;font-size:14px;transition:background .15s}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
.btn-lg{padding:13px 34px;font-size:16px;border-radius:8px}

/* Hero */
.hero{background:linear-gradient(150deg,#1c2b4a 0%,#20365e 45%,#1d4e89 100%);color:#fff;padding:76px 0 64px;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-140px;top:-140px;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(64,158,255,.22),transparent 62%)}
.hero .wrap{position:relative;z-index:1;text-align:center}
.hero h1{font-size:40px;line-height:1.3;font-weight:800;letter-spacing:.5px;margin-bottom:18px}
.hero h1 em{font-style:normal;background:linear-gradient(90deg,#6db6ff,#9ecbff);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.sub{font-size:16px;color:#b8c8e2;margin-bottom:32px;line-height:1.9}
.hero .cta{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-bottom:44px}
.hero-stats{display:flex;justify-content:center;gap:52px;flex-wrap:wrap;color:#9db3d6}
.hero-stats .hs{text-align:center}
.hero-stats .hs b{display:block;font-size:22px;color:#fff;margin-bottom:2px}
.hero-stats .hs span{font-size:12.5px}

/* 广告位（复用后台样式，独立于 admin.css） */
.ad-slot{margin:0 auto;text-align:left;position:relative;max-width:1120px;padding:0 22px}
.ad-slot .ad-banner{display:inline-block;max-width:100%;line-height:0;border-radius:5px;overflow:hidden}
.ad-slot .ad-banner img{max-width:100%;height:auto;border:0;vertical-align:middle}
.ad-slot .ad-textlink{display:inline-block;padding:9px 24px;background:#f5f8ff;border:1px solid #d9e6ff;border-radius:4px;color:#409eff;font-size:13px;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ad-flag{position:absolute;right:24px;top:2px;font-size:10px;color:#b9bfc9;background:rgba(255,255,255,.88);padding:1px 6px;border-radius:3px;line-height:1.5}
.ad-placeholder{border:1px dashed #d4d9e2;border-radius:5px;padding:14px;color:#9aa3b2;font-size:12px;background:#fafbfd}
.ad-wrap{padding:26px 0 6px;background:#fff}

/* 功能特点 */
.features{padding:64px 0 30px}
.sec-title{text-align:center;font-size:28px;font-weight:800;color:#1f2d3d;margin-bottom:10px}
.sec-sub{text-align:center;color:#8a94a6;font-size:14px;margin-bottom:42px}
.fgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.fcard{background:#fff;border:1px solid #eef1f6;border-radius:10px;padding:22px 20px;transition:transform .18s,box-shadow .18s,border-color .18s}
.fcard:hover{transform:translateY(-3px);box-shadow:0 10px 30px rgba(31,45,61,.08);border-color:#dbe6f5}
.fcard .ico{width:44px;height:44px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:21px;margin-bottom:13px;background:linear-gradient(135deg,#eaf3ff,#d9e9ff)}
.fcard h3{font-size:15px;font-weight:700;color:#1f2d3d;margin-bottom:7px}
.fcard p{font-size:12.8px;color:#7d8899;line-height:1.75}

/* 步骤 */
.steps{background:#f7f9fc;padding:60px 0;margin-top:40px}
.sgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;counter-reset:step}
.scard{background:#fff;border-radius:10px;padding:26px 24px;border:1px solid #eef1f6;position:relative}
.scard .no{width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,#409eff,#2f6fed);color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;font-size:15px;margin-bottom:13px}
.scard h3{font-size:15.5px;font-weight:700;margin-bottom:7px;color:#1f2d3d}
.scard p{font-size:13px;color:#7d8899;line-height:1.8}
.scard code{background:#f1f5fb;border-radius:3px;padding:1px 6px;font-size:12px;color:#2f6fed;font-family:Consolas,monospace}

/* 底部 CTA */
.cta2{text-align:center;padding:66px 0}
.cta2 h2{font-size:26px;font-weight:800;color:#1f2d3d;margin-bottom:12px}
.cta2 p{color:#8a94a6;margin-bottom:28px}

/* 页脚 */
footer{background:#1c2b4a;color:#8fa3c4;padding:34px 0 28px;font-size:13px}
footer .wrap{display:flex;align-items:center;flex-wrap:wrap;gap:14px}
footer .links{margin-left:auto;display:flex;gap:20px}
footer a:hover{color:#fff}

@media (max-width:900px){
  .fgrid{grid-template-columns:repeat(2,1fr)}
  .sgrid{grid-template-columns:1fr}
  .hero h1{font-size:29px}
  .hero-stats{gap:26px}
}