:root{--bg:#f6f8fb;--card:#ffffff;--ink:#172033;--muted:#667085;--line:#e4e9f2;--brand:#1f4e79;--brand2:#c79a42;--soft:#eef4fb;--shadow:0 18px 45px rgba(28,45,70,.09)}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.75}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.container{width:min(1180px,92vw);margin:auto}.topbar{background:#0f2035;color:#d9e5f2;font-size:14px}.topbar .container{display:flex;justify-content:space-between;gap:20px;padding:8px 0}.site-header{background:rgba(255,255,255,.94);backdrop-filter:blur(16px);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:16px 0}.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:24px;color:var(--brand)}.logo-mark{width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,var(--brand),#0f2035);color:white;display:grid;place-items:center;font-size:17px;box-shadow:var(--shadow)}.nav-links{display:flex;align-items:center;gap:18px;font-size:15px;color:#344054}.nav-links a:hover{color:var(--brand)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:999px;padding:11px 18px;background:var(--brand);color:white;font-weight:700;border:0;cursor:pointer;box-shadow:0 10px 20px rgba(31,78,121,.18)}.btn.alt{background:#fff;color:var(--brand);border:1px solid #cdd8e6;box-shadow:none}.search-wrap{background:white;border-bottom:1px solid var(--line)}.search-box{display:flex;gap:10px;padding:14px 0}.search-box input{flex:1;border:1px solid #d4deea;border-radius:16px;padding:13px 16px;font-size:15px}.search-box button{border:0;border-radius:16px;background:#172033;color:white;padding:0 22px;font-weight:700;cursor:pointer}.notice{display:none;margin:0 0 14px;padding:10px 14px;border-radius:14px;background:#fff6df;color:#7a5300}.hero{padding:64px 0 44px;background:radial-gradient(circle at 20% 10%,#e9f2fb,transparent 32%),linear-gradient(180deg,#fff,#f6f8fb)}.hero-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:42px;align-items:center}.eyebrow{display:inline-flex;border:1px solid #d5e2ef;background:#fff;border-radius:999px;padding:5px 12px;color:var(--brand);font-weight:700;font-size:14px}.hero h1{font-size:48px;line-height:1.16;margin:18px 0 16px;letter-spacing:-1px}.hero p{font-size:18px;color:var(--muted);margin:0 0 24px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap}.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:28px}.metric{background:white;border:1px solid var(--line);border-radius:18px;padding:14px}.metric strong{display:block;font-size:24px;color:var(--brand)}.hero-card{background:white;border:1px solid var(--line);border-radius:32px;box-shadow:var(--shadow);padding:18px}.video-card{position:relative;overflow:hidden;border-radius:26px;background:#dde6f0}.video-card img{width:100%;aspect-ratio:16/10;object-fit:cover}.play-mask{position:absolute;inset:0;display:grid;place-items:center;background:rgba(15,32,53,.18);opacity:0;transition:.2s}.video-card:hover .play-mask{opacity:1}.play-btn{width:76px;height:76px;border-radius:50%;background:rgba(255,255,255,.94);display:grid;place-items:center;color:var(--brand);font-size:32px;box-shadow:var(--shadow)}.video-meta{padding:16px;background:white}.video-meta h3{margin:0 0 6px;font-size:20px}.tags{display:flex;gap:8px;flex-wrap:wrap}.tag{font-size:13px;border-radius:999px;background:var(--soft);color:var(--brand);padding:4px 10px}.section{padding:58px 0}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px}.section h2{font-size:32px;margin:0}.section .lead{color:var(--muted);max-width:720px;margin:8px 0 0}.grid{display:grid;gap:18px}.grid.cols-3{grid-template-columns:repeat(3,1fr)}.grid.cols-4{grid-template-columns:repeat(4,1fr)}.card{background:var(--card);border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:0 8px 24px rgba(15,32,53,.04)}.card h3{margin:0 0 8px;font-size:20px;color:#152238}.card p{margin:0;color:var(--muted)}.steps{counter-reset:step}.step{position:relative;padding-left:58px}.step:before{counter-increment:step;content:counter(step);position:absolute;left:22px;top:22px;width:28px;height:28px;border-radius:50%;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:800}.log{display:flex;gap:14px;align-items:flex-start}.log time{min-width:98px;color:var(--brand);font-weight:700}.faq details{background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px 18px}.faq details+details{margin-top:12px}.faq summary{cursor:pointer;font-weight:800}.review{display:flex;flex-direction:column;gap:14px}.stars{color:#b88728;letter-spacing:2px}.contact-panel{display:grid;grid-template-columns:1fr 1fr;gap:20px;background:#102238;color:white;border-radius:30px;padding:30px}.contact-panel p{color:#d9e5f2}.footer{background:#0d1c2e;color:#d9e5f2;padding:34px 0;margin-top:40px}.footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:24px}.footer a{color:#d9e5f2}.breadcrumb{font-size:14px;color:var(--muted);padding:18px 0}.page-title{padding:34px 0;background:#fff;border-bottom:1px solid var(--line)}.page-title h1{font-size:40px;margin:0}.content{background:#fff;border:1px solid var(--line);border-radius:24px;padding:28px}.share{display:flex;gap:10px;flex-wrap:wrap}.share button{border:1px solid var(--line);background:white;border-radius:999px;padding:9px 14px;cursor:pointer}.data-block{white-space:pre-wrap;word-break:break-word;background:#0f2035;color:#e8eef7;border-radius:18px;padding:18px;overflow:auto;font-size:13px;line-height:1.6}.mobile-menu{display:none}@media (max-width:900px){.hero-grid,.contact-panel,.footer-grid{grid-template-columns:1fr}.grid.cols-3,.grid.cols-4,.metrics{grid-template-columns:1fr}.hero h1{font-size:34px}.nav-links{display:none}.mobile-menu{display:inline-flex}.section-head{display:block}.topbar .container{display:block}.search-box{flex-direction:column}.search-box button{padding:12px}.section{padding:42px 0}}