:root{--bg:#111318;--nav:#151820;--panel:#1A1E27;--panel2:#222733;--accent:#F45132;--accent2:#FF684E;--gold:#D7A84B;--text:#F7F8FA;--body:#D5D8DF;--muted:#AEB4C0;--line:rgba(255,255,255,.09);--wrap:1200px}
*{box-sizing:border-box}html{scroll-behavior:smooth;background:var(--bg)}body{margin:0;background:radial-gradient(circle at 20% 0,rgba(244,81,50,.06),transparent 26%),var(--bg);color:var(--body);font-family:system-ui,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.75;overflow-x:hidden}body.drawer-open{overflow:hidden}a{color:inherit;text-decoration:none;touch-action:manipulation;min-height:40px}img{max-width:100%;height:auto}button{font:inherit}.wrap{width:min(calc(100% - 32px),var(--wrap));margin:0 auto;max-width:100%}
.site-header{position:sticky;top:0;z-index:1000;background:rgba(21,24,32,.98);border-bottom:1px solid var(--line);backdrop-filter:blur(10px)}.desktop-header{height:72px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:20px}.brand-mark,.drawer-brand{display:flex;align-items:center;gap:10px;min-width:174px}.brand-mark img,.drawer-brand img,.mobile-brand img{object-fit:contain;border-radius:8px}.brand-mark strong,.drawer-brand strong{display:block;color:var(--text);font-size:19px;line-height:1.1}.brand-mark small,.drawer-brand small{display:block;color:var(--muted);font-size:11px;letter-spacing:.13em;margin-top:3px}.logo-placeholder{display:inline-block;width:44px;height:44px;border-radius:8px;background:linear-gradient(135deg,#2b303c,#111318);border:1px solid var(--line)}.logo-placeholder.small{width:36px;height:36px}
.desktop-nav{display:flex;justify-content:center;align-items:stretch;gap:2px;white-space:nowrap}.desktop-nav a{position:relative;display:flex;align-items:center;padding:0 10px;color:var(--muted);font-weight:750;font-size:15px}.desktop-nav a:hover,.desktop-nav a.active{color:var(--text)}.desktop-nav a.active:after{content:"";position:absolute;left:10px;right:10px;bottom:0;height:2px;background:var(--accent)}.register-btn{display:inline-flex;align-items:center;justify-content:center;height:42px;min-width:86px;padding:0 22px;border-radius:999px;background:var(--accent);color:#fff;font-weight:800}.register-btn:hover{background:var(--accent2)}.mobile-header{display:none}.channel-strip{background:#12151c;border-top:1px solid var(--line)}.channel-links{display:flex;justify-content:center;gap:28px;min-height:42px;align-items:center;color:var(--muted);font-size:14px;overflow-x:auto;white-space:nowrap;scrollbar-width:none}.channel-links::-webkit-scrollbar{display:none}.channel-links a:hover{color:var(--text)}
.site-main{min-height:60vh;padding-bottom:26px}.hero{padding:44px 0 18px}.hero-grid{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(280px,.6fr);gap:24px;align-items:stretch}.hero-card{background:linear-gradient(145deg,#1b202a,#151820);border:1px solid var(--line);border-radius:18px;padding:28px}.hero-note{display:flex;flex-direction:column;justify-content:space-between;background:#161a22;border:1px solid var(--line);border-radius:18px;padding:24px}.page-head{padding:42px 0 22px;border-bottom:1px solid var(--line)}h1,h2,h3{color:var(--text);line-height:1.25;margin-top:0}h1{font-size:clamp(32px,4vw,42px);margin-bottom:14px}h2{font-size:24px;margin-bottom:14px}h3{font-size:18px;margin-bottom:8px}p{margin:0 0 14px}.lead{font-size:18px;color:var(--body);max-width:880px}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--gold);font-weight:800;font-size:13px;letter-spacing:.08em;margin-bottom:10px}.eyebrow:before{content:"";width:22px;height:2px;background:var(--accent)}
.section{padding:34px 0}.section+.section{border-top:1px solid var(--line)}.panel{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:22px}.panel.soft{background:var(--panel2)}.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:20px;min-width:0}.card.feature{border-top:2px solid var(--accent)}.card p:last-child{margin-bottom:0}.card a,.text-link{color:var(--text);font-weight:800;border-bottom:1px solid rgba(244,81,50,.45)}.card a:hover,.text-link:hover{color:var(--accent2)}.number-tag{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:50%;background:var(--panel2);color:var(--gold);font-weight:900;margin-bottom:12px}
.media{position:relative;width:100%;max-width:100%;overflow:hidden;border-radius:10px;background:#12151c;aspect-ratio:16/9}.media > img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;object-position:center center;display:block}.media-4x5{aspect-ratio:4/5}.media-placeholder{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#181c24,#0f1117);border:1px solid var(--line)}.media-placeholder:after{content:"";width:36%;height:2px;background:rgba(255,255,255,.08);transform:rotate(-16deg)}.figure-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:12px}.figure-card p{margin:10px 4px 4px}.related-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}.related-links a{display:inline-flex;align-items:center;padding:8px 13px;border-radius:999px;background:var(--panel2);border:1px solid var(--line);color:var(--text)}.related-links a:hover{border-color:rgba(244,81,50,.5)}.qa-list{display:grid;gap:14px}.qa-item{background:var(--panel);border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:12px;padding:18px}.qa-item strong{display:block;color:var(--text);margin-bottom:6px}.bullet-list{margin:0;padding-left:1.2em}.bullet-list li+li{margin-top:8px}
.site-footer{background:#0e1014;border-top:1px solid var(--line);padding:42px 0 26px;margin-top:30px}.footer-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}.site-footer h2{font-size:16px;margin-bottom:10px}.site-footer section{display:flex;flex-direction:column;align-items:flex-start}.site-footer a{color:var(--muted);padding:4px 0}.site-footer a:hover{color:var(--text)}.footer-bottom{border-top:1px solid var(--line);margin-top:28px;padding-top:20px;display:flex;justify-content:space-between;gap:20px;color:var(--muted);font-size:14px}.footer-bottom p{margin:0}.carousel{position:relative}.carousel-viewport{position:relative;border-radius:16px;overflow:hidden;background:#0d0f13;border:1px solid var(--line)}.carousel-slide{display:none}.carousel-slide.is-active{display:block}.carousel-slide .media{border-radius:0;aspect-ratio:auto;height:260px}.carousel-prev,.carousel-next{position:absolute;top:50%;transform:translateY(-50%);width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:rgba(17,19,24,.78);color:#fff;cursor:pointer;z-index:3}.carousel-prev{left:12px}.carousel-next{right:12px}.carousel-dots{display:flex;justify-content:center;gap:8px;margin-top:12px}.carousel-dot{width:34px;height:40px;padding:0;border:0;background:transparent;cursor:pointer;position:relative}.carousel-dot:after{content:"";position:absolute;left:7px;right:7px;top:19px;height:3px;border-radius:3px;background:#4b515d}.carousel-dot.is-active:after{background:var(--accent)}
.mobile-drawer,.drawer-mask{display:none}.mobile-bottom{display:none}.back-top{position:fixed;right:18px;bottom:24px;width:44px;height:44px;border:1px solid var(--line);border-radius:50%;background:#20242d;color:#fff;opacity:0;pointer-events:none;transition:.2s;z-index:900;cursor:pointer}.back-top.is-visible{opacity:1;pointer-events:auto}
@media(max-width:1080px){.desktop-nav a{padding:0 7px;font-size:14px}.brand-mark{min-width:154px}}
@media(max-width:980px){.desktop-header{display:none}.mobile-header{height:62px;display:grid;grid-template-columns:64px minmax(0,1fr) 86px;align-items:center;padding:0 12px;gap:8px}.menu-btn{width:46px;height:46px;border:0;background:transparent;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer}.menu-btn span{display:block;width:22px;height:2px;background:var(--text)}.mobile-brand{display:flex;align-items:center;justify-content:center;gap:7px;min-width:0;color:var(--text);font-weight:800}.mobile-brand strong{white-space:nowrap}.mobile-register{justify-self:end;height:40px;min-width:74px;padding:0 16px}.channel-strip{display:none}.mobile-drawer{display:block;position:fixed;inset:0 auto 0 0;width:min(84vw,320px);background:#151820;color:#F7F8FA;z-index:12000;transform:translateX(-105%);transition:transform .2s ease;overflow-y:auto;padding-bottom:24px}.mobile-drawer.is-open{transform:translateX(0)}.drawer-mask{display:none;position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:11000;opacity:0;pointer-events:none}.drawer-mask.is-visible{display:block;opacity:1;pointer-events:auto}.drawer-head{height:64px;display:flex;align-items:center;justify-content:space-between;padding:0 16px;border-bottom:1px solid var(--line)}.drawer-brand{min-width:0}.drawer-close{width:44px;height:44px;border:0;background:transparent;color:#fff;font-size:30px;cursor:pointer}.drawer-group{padding:16px;border-bottom:1px solid var(--line)}.drawer-group h2{font-size:13px;color:var(--muted);margin:0 0 6px}.drawer-group a{display:flex;align-items:center;min-height:44px;border-radius:8px;padding:0 10px;color:var(--body)}.drawer-group a:hover{background:var(--panel2);color:var(--text)}.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}.hero-grid{grid-template-columns:1fr}.site-main{padding-bottom:76px}.mobile-bottom{position:fixed;left:0;right:0;bottom:0;height:62px;background:#151820;border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(4,1fr);z-index:1000;padding-bottom:env(safe-area-inset-bottom)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:14px;font-weight:800;min-height:44px}.mobile-bottom .bottom-register{color:var(--accent)}.back-top{bottom:82px}}
@media(max-width:760px){.wrap{width:min(calc(100% - 24px),var(--wrap))}.hero,.page-head{padding:28px 0 18px}.section{padding:26px 0}h1{font-size:30px}.lead{font-size:16px}.grid-2,.grid-3,.grid-4,.footer-grid{grid-template-columns:1fr}.carousel-slide .media{height:170px}.figure-card .media-4x5{max-height:260px}.footer-bottom{flex-direction:column;gap:8px}.panel,.card,.hero-card,.hero-note{padding:17px}}
@media(max-width:390px){.mobile-header{grid-template-columns:54px minmax(0,1fr) 78px;padding:0 8px}.mobile-brand{gap:5px}.mobile-brand strong{font-size:15px}.mobile-brand img,.logo-placeholder.small{width:32px;height:32px}.mobile-register{min-width:70px;padding:0 12px}.carousel-slide .media{height:150px}}
@media(max-width:360px){.mobile-brand strong{font-size:14px}.mobile-register{min-width:66px;padding:0 10px}}