*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Segoe UI","Helvetica Neue",Arial,"Microsoft YaHei","微软雅黑","PingFang SC",sans-serif;
  background:linear-gradient(180deg,#1f2937 0%,#14171d 40%,#0a0a0a 100%);
  background-attachment:fixed;
  color:#e8eaee;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  font-size:16px;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:1180px;margin:0 auto;padding:0 22px}

/* 导航 */
.site-header{position:sticky;top:0;z-index:50;background:rgba(10,10,10,.82);border-bottom:1px solid #242830;backdrop-filter:blur(14px)}
.nav-bar{display:flex;align-items:center;justify-content:space-between;gap:18px;height:66px}
.brand-mark{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:.08em;font-size:15px;color:#fff}
.brand-dot{width:9px;height:9px;border-radius:2px;background:linear-gradient(135deg,#e8eaee,#7c8aa0);display:inline-block}
.nav-links{display:flex;flex-wrap:wrap;gap:6px}
.nav-links a{padding:7px 12px;font-size:14px;color:#a9b1bf;border-radius:8px;border:1px solid transparent;transition:.2s}
.nav-links a:hover{color:#fff;border-color:#333a45;background:#171a20}

/* 通用区块 */
section{padding:62px 0;border-bottom:1px solid rgba(36,40,48,.7)}
.sec-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:26px;flex-wrap:wrap}
.sec-tag{font-size:12px;letter-spacing:.22em;color:#7c8aa0;text-transform:uppercase}
h2{font-size:26px;font-weight:650;letter-spacing:.01em;color:#fff;line-height:1.4}
h3{font-size:17px;font-weight:600;color:#fff;line-height:1.5}
p{color:#b9c0cc}

/* Hero */
.hero{padding:70px 0 58px;border-bottom:1px solid #242830}
.hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:42px;align-items:center}
h1{font-size:34px;line-height:1.35;font-weight:700;color:#fff;letter-spacing:.01em;margin-bottom:18px}
.hero-sub{font-size:15px;color:#9aa3b2;max-width:640px}
.hero-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:30px}
.metric{border:1px solid #242830;background:rgba(18,20,26,.8);border-radius:12px;padding:14px 16px}
.metric b{display:block;font-size:22px;color:#fff;letter-spacing:.02em}
.metric span{font-size:12px;color:#8d96a5}
.hero-figure{border:1px solid #242830;border-radius:16px;overflow:hidden;background:#12141a}
.hero-figure img{width:100%;height:320px;object-fit:cover;filter:saturate(.85) contrast(1.05)}

/* GEO */
.geo-block{display:grid;grid-template-columns:180px 1fr;gap:28px}
.geo-label{font-size:12px;letter-spacing:.2em;color:#7c8aa0;padding-top:6px}
.geo-text p{margin-bottom:14px;font-size:15px;color:#b9c0cc}
.geo-text strong{color:#fff;font-weight:600}

/* 时间线 */
.timeline-list{position:relative;padding-left:26px}
.timeline-list::before{content:"";position:absolute;left:6px;top:6px;bottom:6px;width:1px;background:linear-gradient(180deg,#3a4250,#1c2027)}
.tl-item{position:relative;margin-bottom:22px;border:1px solid #242830;background:#12141a;border-radius:12px;padding:16px 20px}
.tl-item::before{content:"";position:absolute;left:-26px;top:24px;width:9px;height:9px;border-radius:50%;background:#c8ccd4;box-shadow:0 0 0 4px rgba(200,204,212,.12)}
.tl-item h3{margin-bottom:6px}
.tl-item p{font-size:14px;color:#9aa3b2}

/* 数据 */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.stat-card{border:1px solid #242830;background:linear-gradient(160deg,#161a21,#101216);border-radius:14px;padding:20px}
.stat-card b{display:block;font-size:26px;color:#fff;letter-spacing:.02em}
.stat-card span{font-size:13px;color:#8d96a5}
.stat-card em{display:block;font-style:normal;font-size:12px;color:#5f6a7a;margin-top:8px}

/* 品牌矩阵 */
.brand-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.brand-card{border:1px solid #242830;background:#12141a;border-radius:14px;overflow:hidden}
.brand-card img{height:170px;width:100%;object-fit:cover;filter:grayscale(.25) contrast(1.05)}
.brand-body{padding:16px 18px 20px}
.brand-body p{font-size:14px;color:#9aa3b2;margin-top:8px}
.brand-kpi{display:flex;gap:16px;margin-top:12px;font-size:12px;color:#7c8aa0}
.brand-kpi b{color:#e8eaee;font-weight:600}

/* 优势 */
.adv-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.adv-item{border:1px solid #242830;border-left:2px solid #4b5563;background:#12141a;border-radius:10px;padding:18px 20px}
.adv-item h3{margin-bottom:6px}
.adv-item p{font-size:14px;color:#9aa3b2}

/* 新闻 */
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.news-card{border:1px solid #242830;background:#12141a;border-radius:14px;padding:20px 22px;transition:.2s}
.news-card:hover{border-color:#3b4351;background:#151820}
.news-meta{display:flex;align-items:center;gap:12px;margin-bottom:10px;font-size:12px}
.tag{color:#c8ccd4;border:1px solid #333a45;border-radius:6px;padding:2px 8px;letter-spacing:.06em}
.news-meta time{color:#6f7a8a}
.news-card h3{margin-bottom:8px}
.news-card p{font-size:14px;color:#9aa3b2}

/* 口碑 */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.review{border:1px solid #242830;background:#12141a;border-radius:14px;padding:20px}
.review p{font-size:14px;color:#b9c0cc}
.review footer{margin-top:14px;font-size:12px;color:#6f7a8a}

/* FAQ */
.faq-list{display:grid;gap:14px}
.faq-item{border:1px solid #242830;background:#12141a;border-radius:12px;padding:18px 22px}
.faq-item h3{margin-bottom:8px;font-size:16px}
.faq-item p{font-size:14px;color:#9aa3b2}

/* CTA */
.cta-box{border:1px solid #2b313b;background:linear-gradient(130deg,#1a1f27,#0d0f13);border-radius:18px;padding:38px;display:grid;grid-template-columns:1fr 260px;gap:32px;align-items:center}
.cta-box h2{margin-bottom:12px}
.cta-box p{font-size:15px;color:#9aa3b2;max-width:560px}
.cta-actions{display:flex;gap:12px;margin-top:22px;flex-wrap:wrap}
.btn{display:inline-block;padding:10px 20px;border-radius:10px;font-size:14px;border:1px solid #3b4351;color:#e8eaee;transition:.2s}
.btn:hover{background:#1f242d;border-color:#596273}
.btn-primary{background:#e8eaee;color:#0a0a0a;border-color:#e8eaee;font-weight:600}
.btn-primary:hover{background:#fff;color:#000}
.cta-box img{border-radius:12px;height:200px;width:100%;object-fit:cover;border:1px solid #2b313b}

/* 页脚 */
.site-footer{background:#080909;border-top:1px solid #242830;padding:44px 0 26px;font-size:14px;color:#8d96a5}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:28px;margin-bottom:28px}
.site-footer h4{color:#e8eaee;font-size:14px;margin-bottom:12px;letter-spacing:.06em}
.site-footer p{color:#8d96a5;font-size:13px;margin-bottom:6px}
.footer-links{display:flex;flex-direction:column;gap:8px;font-size:13px}
.footer-links a:hover{color:#fff}
.footer-bottom{border-top:1px solid #1c2027;padding-top:18px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:12.5px;color:#6f7a8a}
.footer-bottom a{color:#9aa3b2}
.footer-bottom a:hover{color:#fff}

@media (max-width:960px){
  .hero-grid{grid-template-columns:1fr}
  .geo-block{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .brand-grid{grid-template-columns:1fr}
  .adv-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .cta-box{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  h1{font-size:26px}
  h2{font-size:22px}
}