*{box-sizing:border-box}
:root{--bg:#07111f;--panel:#0d1b2a;--panel2:#10243a;--line:rgba(73,212,255,.22);--cyan:#49d4ff;--lime:#b7f36b;--text:#eef7ff;--muted:#9db1c5;--soft:#d7e7f4}
html{scroll-behavior:smooth;background:var(--bg)}body{margin:0;background:radial-gradient(circle at 20% -10%,#12345a 0,transparent 38%),var(--bg);color:var(--text);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.78;overflow-x:hidden}a{color:inherit}img{max-width:100%}
.site-header{position:sticky;top:0;z-index:9999;background:rgba(7,17,31,.96);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}.header-inner{max-width:1180px;min-height:70px;margin:auto;padding:0 18px;display:flex;align-items:center;gap:20px}.site-logo{display:flex;align-items:center;text-decoration:none;flex:0 0 auto}.site-logo img{height:40px;width:auto;max-width:160px;object-fit:contain}.logo-fallback{font-size:22px;font-weight:900;color:var(--cyan)}.nav-core{margin-left:auto;display:flex;gap:6px}.nav-core a{padding:9px 13px;border-radius:10px;color:var(--soft);font-weight:700;text-decoration:none;white-space:nowrap}.nav-core a:hover,.nav-core a.is-current{background:#122a43;color:var(--cyan)}
.main-btn{display:inline-flex;align-items:center;justify-content:center;height:42px;min-width:96px;padding:0 17px;border-radius:12px;text-decoration:none;font-weight:900;color:#06111d;background:linear-gradient(135deg,var(--cyan),var(--lime));box-shadow:0 10px 28px rgba(73,212,255,.18)}.header-action{margin-left:4px}.menu-toggle{display:none}
.channel-strip{background:#081625;border-bottom:1px solid rgba(255,255,255,.05)}.channel-inner{max-width:1180px;margin:auto;padding:0 18px;display:flex;gap:4px;overflow-x:auto;scrollbar-width:thin}.channel-inner a{flex:0 0 auto;padding:10px 11px;color:var(--muted);font-size:14px;text-decoration:none;white-space:nowrap}.channel-inner a:hover,.channel-inner a.is-current{color:var(--lime)}
.site-main{max-width:1180px;margin:auto;padding:0 76px 56px 18px}.hero{padding:56px 0 34px}.hero-kicker{display:inline-flex;padding:5px 10px;border:1px solid var(--line);border-radius:999px;color:var(--cyan);font-size:13px;letter-spacing:.08em}.hero h1,.page-hero h1{font-size:clamp(32px,5vw,52px);line-height:1.12;margin:14px 0 15px;letter-spacing:-.02em}.hero h1 em{font-style:normal;color:var(--lime)}.hero p,.page-hero p{max-width:820px;color:var(--soft);font-size:18px;margin:0}.hero-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}.hero-links a{padding:10px 14px;border:1px solid var(--line);border-radius:11px;text-decoration:none;background:rgba(13,27,42,.7)}
.section{padding:38px 0}.section.compact{padding:24px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:18px}.section-title{margin:0;color:var(--text);font-size:27px}.section-note{max-width:560px;color:var(--muted);font-size:14px}.eyebrow{color:var(--cyan);font-size:13px;font-weight:800;letter-spacing:.1em;text-transform:uppercase}
.poster-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.media{position:relative;width:100%;overflow:hidden;border-radius:16px;background:#0a1624;border:1px solid rgba(255,255,255,.06);aspect-ratio:16/9}.media>img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;object-position:center;display:block}.media-placeholder{display:flex;align-items:center;justify-content:center;color:#5f7891}.poster-media{height:188px;aspect-ratio:auto}.feature-media{height:232px;aspect-ratio:auto}.thumb-media{height:166px;aspect-ratio:auto}
.channel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.channel-card,.topic-card{background:linear-gradient(180deg,#0e1f31,#0b1928);border:1px solid var(--line);border-radius:16px;padding:20px;text-decoration:none;min-height:160px;box-shadow:0 16px 34px rgba(0,0,0,.16)}.channel-card .num{font-size:12px;color:var(--cyan);font-weight:800}.channel-card h2,.channel-card h3,.topic-card h2,.topic-card h3{margin:8px 0 7px;font-size:22px}.channel-card p,.topic-card p{margin:0;color:var(--muted)}.channel-card:hover{transform:translateY(-3px);border-color:rgba(183,243,107,.48)}
.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.quick-link{padding:16px;border-radius:14px;background:#0c1a29;border:1px solid rgba(255,255,255,.07);text-decoration:none}.quick-link strong{display:block;color:var(--lime);margin-bottom:5px}.quick-link span{display:block;color:var(--muted);font-size:13px;line-height:1.6}
.feature-row{display:grid;grid-template-columns:1.05fr .95fr;gap:22px;align-items:center}.feature-copy h2{font-size:28px;margin:0 0 10px}.feature-copy p{color:var(--soft);margin:0 0 14px}.pill-row{display:flex;flex-wrap:wrap;gap:8px}.pill-row a{padding:7px 10px;border-radius:999px;background:#10263c;color:var(--cyan);text-decoration:none;font-size:13px}
.page-hero{padding:46px 0 28px;border-bottom:1px solid var(--line)}.page-hero h1{font-size:clamp(30px,4vw,44px)}.breadcrumb{margin-top:16px;color:var(--muted);font-size:14px}.breadcrumb a{color:var(--cyan);text-decoration:none}.article{max-width:840px}.article h2{margin:30px 0 10px;font-size:25px}.article h3{margin:22px 0 8px;font-size:19px;color:var(--lime)}.article p{margin:0 0 16px;color:var(--soft)}.article ul,.article ol{padding-left:22px;color:var(--soft)}.article li{margin:7px 0}.article a{color:var(--cyan)}.note{padding:16px 18px;border-left:3px solid var(--lime);background:#0d1c2b;border-radius:0 14px 14px 0;color:var(--soft)}.metric-list{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:22px 0}.metric{padding:16px;border:1px solid var(--line);border-radius:14px;background:#0b1a2a}.metric strong{display:block;color:var(--cyan);font-size:18px}.metric span{color:var(--muted);font-size:13px}.related{display:flex;flex-wrap:wrap;gap:9px;margin-top:24px}.related a{padding:8px 11px;border:1px solid var(--line);border-radius:10px;text-decoration:none;color:var(--soft)}.related a:hover{color:var(--lime);border-color:rgba(183,243,107,.55)}
.two-col{display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,.7fr);gap:24px;align-items:start}.three-col{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.list-panel{padding:18px;border-radius:16px;background:#0b1a2a;border:1px solid var(--line)}.list-panel h2{margin:0 0 10px}.list-panel a{display:block;padding:8px 0;color:var(--soft);text-decoration:none;border-bottom:1px solid rgba(255,255,255,.06)}.list-panel a:last-child{border-bottom:0}
.qa-grid{display:grid;gap:12px}.qa{padding:18px;border-radius:14px;background:#0c1b2b;border:1px solid rgba(255,255,255,.07)}.qa h2{margin:0 0 7px;font-size:19px;color:var(--lime)}.qa p{margin:0;color:var(--soft)}
.side-float{position:fixed;right:10px;top:34%;z-index:8500;width:56px;border-radius:14px;overflow:hidden;border:1px solid var(--line);background:#091827;display:flex;flex-direction:column}.side-float a{padding:9px 5px;text-align:center;font-size:12px;text-decoration:none;color:var(--cyan);border-bottom:1px solid rgba(255,255,255,.06)}.side-float a:last-child{border:0}.side-float .side-primary{background:linear-gradient(135deg,var(--cyan),var(--lime));color:#06111d;font-weight:900}
.site-footer{background:#040b13;border-top:1px solid var(--line)}.footer-grid{max-width:1180px;margin:auto;padding:38px 76px 24px 18px;display:grid;grid-template-columns:1.35fr 1fr 1fr 1fr;gap:25px}.footer-grid h2{font-size:15px;color:var(--cyan);margin:0 0 10px}.footer-grid a{display:block;color:var(--muted);text-decoration:none;margin:5px 0}.footer-grid a:hover{color:var(--lime)}.footer-brand p{max-width:340px;color:var(--muted)}.footer-logo img{height:36px;width:auto;max-width:155px;object-fit:contain}.footer-bottom{max-width:1180px;margin:auto;padding:17px 76px 22px 18px;border-top:1px solid rgba(255,255,255,.06);font-size:13px;color:#71879b}.mobile-drawer,.drawer-mask,.mobile-bottom{display:none}
@media(max-width:980px){body{padding-bottom:66px}.header-inner{min-height:64px;padding:0 13px;display:grid;grid-template-columns:54px 1fr 92px;gap:8px}.menu-toggle{display:grid;width:38px;height:38px;place-content:center;gap:4px;border:0;background:transparent}.menu-toggle span{width:22px;height:2px;background:var(--cyan);display:block}.site-logo{justify-self:center}.site-logo img{height:34px;max-width:132px}.nav-core,.channel-strip{display:none}.header-action{justify-self:end;min-width:86px;height:38px;padding:0 11px;font-size:14px}.site-main{padding:0 14px 34px}.side-float{display:none}.footer-grid{padding:32px 14px 24px;grid-template-columns:1fr 1fr}.footer-bottom{padding:16px 14px 18px}.poster-grid{grid-template-columns:repeat(2,1fr)}.channel-grid{grid-template-columns:1fr}.quick-grid{grid-template-columns:repeat(2,1fr)}.feature-row,.two-col{grid-template-columns:1fr}.metric-list{grid-template-columns:1fr}.mobile-drawer{display:block;position:fixed;inset:0 auto 0 0;width:min(84vw,320px);background:#081522;z-index:12000;transform:translateX(-105%);transition:transform .2s ease;box-shadow:18px 0 40px rgba(0,0,0,.45);overflow-y:auto;padding-bottom:30px}.mobile-drawer.is-open{transform:translateX(0)}.drawer-mask{display:none;position:fixed;inset:0;background:rgba(0,0,0,.62);z-index:11000;opacity:0;pointer-events:none;transition:opacity .18s ease}.drawer-mask.is-visible{display:block;opacity:1;pointer-events:auto}.drawer-open{overflow:hidden}.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:15px;border-bottom:1px solid var(--line)}.drawer-logo img{height:34px;width:auto;max-width:140px;object-fit:contain}.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#0d1d2d;color:var(--cyan);font-size:24px}.drawer-group{padding:13px 16px;border-bottom:1px solid rgba(255,255,255,.06)}.drawer-group h2{font-size:12px;color:#6f879d;margin:0 0 7px}.drawer-group a{display:block;padding:7px 0;color:var(--soft);text-decoration:none}.mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:9000;display:grid;grid-template-columns:repeat(4,1fr);background:#050d16;border-top:1px solid var(--line)}.mobile-bottom a{text-align:center;padding:12px 5px;text-decoration:none;color:var(--soft);font-size:14px}}
@media(max-width:680px){.hero{padding:38px 0 25px}.hero p,.page-hero p{font-size:16px}.poster-grid{grid-template-columns:1fr}.poster-media{height:145px}.quick-grid{grid-template-columns:1fr 1fr}.three-col{grid-template-columns:1fr}.feature-media{height:200px}.footer-grid{grid-template-columns:1fr}.section{padding:30px 0}.section-head{align-items:start;flex-direction:column}.section-title{font-size:24px}}
@media(max-width:430px){.header-inner{grid-template-columns:44px 1fr 86px}.site-logo img{height:31px;max-width:116px}.header-action{min-width:82px;padding:0 9px}.quick-grid{gap:9px}.quick-link{padding:14px}.hero h1,.page-hero h1{font-size:30px}}