:root{--bg:#06091b;--panel:#10152d;--panel2:#171d3a;--text:#f5f7ff;--muted:#aeb8db;--line:#28325b;--cyan:#66e0ff;--pink:#d68cff;--gold:#ffd47a;--max:1180px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(circle at 80% 0,#172052 0,transparent 34%),var(--bg);color:var(--text);font-family:"Microsoft YaHei","PingFang SC",system-ui,sans-serif;font-size:16px;line-height:1.75}a{color:inherit;text-decoration:none}img{display:block;max-width:100%;height:auto}.wrap{width:min(var(--max),calc(100% - 32px));margin:auto}.site-head{position:sticky;top:0;z-index:20;background:rgba(6,9,27,.93);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}.head-row{min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:22px}.logo{font-weight:900;letter-spacing:.02em;font-size:1.12rem}.logo i{font-style:normal;color:var(--cyan)}nav{display:flex;gap:4px;flex-wrap:wrap}nav a{padding:9px 11px;color:var(--muted);border-radius:8px;font-size:.94rem}nav a:hover,nav a:focus{background:var(--panel2);color:#fff}.hero{position:relative;min-height:540px;display:grid;align-items:end;overflow:hidden;border-bottom:1px solid var(--line)}.hero>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}.hero:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(4,7,24,.97) 0%,rgba(4,7,24,.76) 42%,rgba(4,7,24,.18) 78%),linear-gradient(0deg,var(--bg),transparent 45%)}.hero-copy{position:relative;z-index:2;max-width:720px;padding:84px 0 70px}.eyebrow{display:inline-flex;gap:8px;align-items:center;color:var(--cyan);font-weight:800;font-size:.86rem;letter-spacing:.12em;text-transform:uppercase}.eyebrow:before{content:"";width:28px;height:2px;background:var(--cyan)}h1{font-size:clamp(2rem,5vw,4.35rem);line-height:1.12;margin:.55rem 0 1rem;letter-spacing:-.035em}h2{font-size:clamp(1.5rem,3vw,2.35rem);line-height:1.3;margin:0 0 .7rem}h3{font-size:1.14rem;line-height:1.45;margin:.25rem 0 .45rem}.lead{font-size:1.08rem;color:#d6dcf3;max-width:680px}.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 18px;border-radius:10px;font-weight:800;background:linear-gradient(135deg,var(--cyan),#7990ff);color:#061025}.btn.alt{background:transparent;color:#fff;border:1px solid #6673a5}.notice{margin-top:22px;padding:14px 16px;border-left:3px solid var(--gold);background:rgba(14,19,47,.82);color:#d9def1;border-radius:0 8px 8px 0}.section{padding:72px 0}.section.compact{padding:45px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:26px}.section-head p{max-width:660px;color:var(--muted);margin:0}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.card{background:linear-gradient(160deg,var(--panel2),var(--panel));border:1px solid var(--line);border-radius:16px;overflow:hidden}.card-media{position:relative;aspect-ratio:16/10;overflow:hidden}.card-media img{width:100%;height:100%;object-fit:cover;transition:.35s}.card:hover .card-media img{transform:scale(1.035)}.play{position:absolute;left:16px;bottom:16px;width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:rgba(6,9,27,.82);border:1px solid rgba(255,255,255,.55);font-size:0}.play:after{content:"";margin-left:3px;border-left:11px solid #fff;border-top:7px solid transparent;border-bottom:7px solid transparent}.card-body{padding:18px}.tag{color:var(--cyan);font-weight:800;font-size:.8rem}.card p,.muted{color:var(--muted);margin:.5rem 0}.more{color:var(--cyan);font-weight:800}.facts{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.fact{padding:20px;border:1px solid var(--line);background:#0c1127;border-radius:14px}.fact strong{display:block;color:var(--cyan);font-size:1.35rem}.split{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:center}.feature-img{border-radius:18px;border:1px solid var(--line);aspect-ratio:3/2;object-fit:cover}.steps{counter-reset:n;display:grid;gap:12px}.step{counter-increment:n;position:relative;padding:18px 18px 18px 62px;background:var(--panel);border:1px solid var(--line);border-radius:12px}.step:before{content:counter(n);position:absolute;left:17px;top:17px;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:var(--cyan);color:#061025;font-weight:900}.chips{display:flex;flex-wrap:wrap;gap:10px}.chip{padding:8px 12px;border:1px solid var(--line);border-radius:999px;color:#cbd3ef;background:#0c1127}.article{max-width:820px;margin:auto}.article p,.article li{color:#c9d0e8}.article img{border-radius:18px;margin:24px 0;border:1px solid var(--line)}.article h2{margin-top:2.1rem}.toc{padding:18px;background:var(--panel);border:1px solid var(--line);border-radius:12px}.toc a{color:var(--cyan)}.faq details{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:16px 18px;margin:10px 0}.faq summary{cursor:pointer;font-weight:800}.footer{border-top:1px solid var(--line);padding:44px 0 28px;color:var(--muted)}.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:28px}.footer a{color:#dbe1f7}.crumb{padding:24px 0;color:var(--muted);font-size:.92rem}.page-hero{padding:46px 0 34px;border-bottom:1px solid var(--line)}.page-hero img{width:100%;height:min(390px,55vw);object-fit:cover;border-radius:18px;margin-top:24px;border:1px solid var(--line)}@media(max-width:800px){.head-row{align-items:flex-start;padding:12px 0;flex-direction:column}.site-head{position:relative}nav{overflow-x:auto;flex-wrap:nowrap;width:100%;padding-bottom:5px}nav a{white-space:nowrap}.hero{min-height:650px}.hero:after{background:linear-gradient(0deg,var(--bg) 0%,rgba(4,7,24,.82) 55%,rgba(4,7,24,.25))}.hero-copy{padding:220px 0 48px}.grid{grid-template-columns:1fr 1fr}.facts{grid-template-columns:1fr 1fr}.split{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.section{padding:52px 0}}@media(max-width:560px){.wrap{width:min(100% - 24px,var(--max))}.grid{grid-template-columns:1fr}.facts{grid-template-columns:1fr 1fr}.section-head{align-items:flex-start;flex-direction:column}.btn{width:100%}h1{font-size:2.25rem}.hero{min-height:700px}.hero-copy{padding-top:270px}}
.home-intro{padding:34px 0 44px;border-bottom:1px solid var(--line);background:radial-gradient(circle at 85% 15%,rgba(102,224,255,.11),transparent 30%)}
.intro-grid{display:grid;grid-template-columns:minmax(0,1.03fr) minmax(360px,.97fr);gap:34px;align-items:center}
.intro-copy h1{font-size:clamp(2.25rem,4.5vw,4.15rem);margin:.65rem 0 1rem;max-width:760px}
.intro-answer{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin:20px 0}
.answer-item{padding:13px 14px;border-radius:12px;background:#0d1430;border:1px solid var(--line);color:#dce4ff}
.answer-item strong{display:block;color:var(--cyan);font-size:.82rem;letter-spacing:.06em}
.intro-visual{position:relative;border-radius:22px;overflow:hidden;border:1px solid #394675;box-shadow:0 26px 70px rgba(0,0,0,.35)}
.intro-visual img{width:100%;height:520px;object-fit:cover}
.visual-caption{position:absolute;left:16px;right:16px;bottom:16px;padding:13px 15px;background:rgba(6,9,27,.86);border:1px solid rgba(255,255,255,.2);border-radius:12px;backdrop-filter:blur(10px)}
.quick-nav{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:20px}
.quick-nav a{padding:16px;border-radius:14px;background:var(--panel);border:1px solid var(--line)}
.quick-nav strong{display:block;color:#fff;margin-bottom:4px}.quick-nav span{color:var(--muted);font-size:.9rem}
.intent-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.intent{padding:22px;border-radius:16px;background:linear-gradient(150deg,#151d42,#0d122b);border:1px solid var(--line)}
.intent b{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:10px;background:rgba(102,224,255,.12);color:var(--cyan);margin-bottom:12px}
.intent p{color:var(--muted);margin:.5rem 0}.intent a{color:var(--cyan);font-weight:800}
.check-table{width:100%;border-collapse:collapse;background:var(--panel);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.check-table th,.check-table td{text-align:left;padding:15px 16px;border-bottom:1px solid var(--line);vertical-align:top}
.check-table th{color:var(--cyan);background:#111936}.check-table td:first-child{font-weight:800;color:#fff}.check-table tr:last-child td{border-bottom:0}
.depth-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:22px}.depth-panel{padding:26px;border:1px solid var(--line);border-radius:16px;background:var(--panel)}
.depth-list{display:grid;gap:13px;margin-top:18px}.depth-row{display:grid;grid-template-columns:92px 1fr;gap:14px;padding-top:13px;border-top:1px solid var(--line)}.depth-row strong{color:var(--cyan)}
.editorial-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:16px;overflow:hidden}.editorial-bar div{padding:21px;background:#0d1229}.editorial-bar strong{display:block;color:var(--gold);margin-bottom:5px}
@media(max-width:900px){.intro-grid,.depth-grid{grid-template-columns:1fr}.intro-visual img{height:min(58vw,480px)}.quick-nav{grid-template-columns:1fr 1fr}.editorial-bar{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.home-intro{padding-top:22px}.intro-copy h1{font-size:2.15rem}.intro-answer,.intent-grid,.quick-nav,.editorial-bar{grid-template-columns:1fr}.intro-visual img{height:72vw}.check-table{display:block;overflow-x:auto;white-space:normal}.check-table th,.check-table td{min-width:128px}.depth-row{grid-template-columns:1fr;gap:2px}}