:root{--bg:#0d1016;--nav:#121620;--panel:#171c27;--panel2:#202735;--panel3:#111722;--text:#f5f7fb;--body:#d4d9e3;--muted:#9ea8b9;--line:rgba(255,255,255,.09);--primary:#f45132;--primary2:#ff684e;--gold:#d7a84b;--shell:1200px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background: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}button{font:inherit}img{max-width:100%}.shell{width:min(calc(100% - 36px),var(--shell));margin:0 auto}.site-header{position:sticky;top:0;z-index:9000;background:rgba(18,22,32,.97);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.desktop-bar{height:70px;display:grid;grid-template-columns:240px minmax(0,1fr) 96px;align-items:center;gap:18px}.brand,.drawer-brand,.footer-brand{display:flex;align-items:center;gap:10px;min-width:0}.brand-logo-box{width:42px;height:42px;border-radius:13px;background:#0c1017;display:grid;place-items:center;border:1px solid var(--line);overflow:hidden;flex:0 0 auto}.brand-logo{width:100%;height:100%;object-fit:contain}.logo-fallback{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--primary);color:white;font-weight:900}.brand-text,.drawer-brand span,.footer-brand div{display:flex;flex-direction:column;line-height:1.08}.brand-text strong{font-size:18px;color:var(--text)}.brand-text small,.drawer-brand small,.footer-brand small{margin-top:4px;color:var(--muted);font-size:10px;letter-spacing:.12em}.main-nav{height:100%;display:flex;justify-content:center;align-items:stretch;gap:2px;min-width:0}.main-nav a{position:relative;display:flex;align-items:center;justify-content:center;min-width:70px;padding:0 11px;color:#aeb6c4;font-size:14px;white-space:nowrap}.main-nav a:after{content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;background:transparent}.main-nav a:hover,.main-nav a.active{color:#fff}.main-nav a.active:after{background:var(--primary)}.register-btn{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:0 20px;border-radius:999px;background:var(--primary);color:#fff;font-weight:800;white-space:nowrap}.register-btn:hover{background:var(--primary2)}
.mobile-bar{display:none}.channel-bar{background:#0d1118;border-top:1px solid rgba(255,255,255,.04)}.channel-inner{height:38px;display:flex;align-items:center;justify-content:center;gap:26px;overflow-x:auto;white-space:nowrap;scrollbar-width:none;color:#8f99aa;font-size:13px}.channel-inner::-webkit-scrollbar{display:none}.channel-inner a:hover{color:#fff}.site-main{min-height:60vh;padding-bottom:28px}.hero-slider{padding:26px 0 10px}.slider-shell{background:linear-gradient(145deg,#141924,#0d1118);border:1px solid var(--line);border-radius:18px;padding:12px}.slider-stage{border-radius:12px;overflow:hidden;background:#0a0d12}.slide{display:none}.slide.is-active{display:block}.slide .media{height:270px;aspect-ratio:auto;border:0;border-radius:12px}.slider-controls{display:flex;align-items:center;justify-content:center;gap:14px;padding:12px 4px 0}.slider-prev,.slider-next,.slider-dot,.menu-btn,.drawer-close,.back-top{border:0;cursor:pointer}.slider-prev,.slider-next{width:42px;height:40px;border-radius:10px;background:var(--panel2);color:#fff}.slider-dots{display:flex;align-items:center;gap:8px}.slider-dot{width:9px;height:9px;padding:0;border-radius:50%;background:#465064}.slider-dot.is-active{width:24px;border-radius:999px;background:var(--primary)}
.home-intro{padding:38px 0 18px}.kicker{margin:0 0 9px;color:var(--primary);font-weight:850;font-size:13px;letter-spacing:.12em}.home-title,.page-hero h1{margin:0;color:var(--text);font-size:clamp(32px,4vw,44px);line-height:1.14;letter-spacing:-.025em}.home-lead,.page-hero p{max-width:820px;margin:16px 0 0;color:#b8c0ce;font-size:17px}.home-section{padding:28px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:16px}.section-head h2{margin:0;color:var(--text);font-size:26px}.section-head p{margin:0;color:var(--muted);font-size:13px}.route-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:15px}.route-card,.info-card,.feature-card,.qa-card,.news-item,.topic-item{background:linear-gradient(180deg,#181e29,#151a24);border:1px solid var(--line);border-radius:15px;padding:20px;min-width:0}.route-card .num{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:9px;background:rgba(244,81,50,.12);color:#ff8b75;font-weight:900;font-size:13px}.route-card h3,.info-card h2,.info-card h3,.feature-card h3,.qa-card h3,.news-item h2,.news-item h3,.topic-item h2,.topic-item h3{margin:11px 0 8px;color:var(--text);line-height:1.35}.route-card h3{font-size:19px}.route-card p,.info-card p,.feature-card p,.qa-card p,.news-item p,.topic-item p{margin:0 0 12px;color:var(--body)}.text-link{color:#ff8f7b;font-weight:750;border-bottom:1px solid rgba(244,81,50,.38)}.text-link:hover{color:#ffb1a2;border-bottom-color:var(--primary)}
.media{position:relative;width:100%;max-width:100%;overflow:hidden;border-radius:12px;background:#10141d;aspect-ratio:16/9;border:1px solid var(--line)}.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{width:100%;height:100%;min-height:140px;background:radial-gradient(circle at 30% 25%,#1c2432,#0b0f15 70%)}.visual-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:15px}.visual-card{background:var(--panel);border:1px solid var(--line);border-radius:15px;padding:12px}.visual-card .media{margin-bottom:10px}.visual-card p{margin:0;color:var(--muted);font-size:14px}.split-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:18px}.panel{background:var(--panel);border:1px solid var(--line);border-radius:15px;padding:22px}.panel h2{margin:0 0 12px;color:var(--text);font-size:23px}.panel p{margin:0 0 12px}.chip-row,.link-row{display:flex;flex-wrap:wrap;gap:9px}.chip-row a,.link-row a{display:inline-flex;align-items:center;min-height:40px;padding:6px 12px;border:1px solid var(--line);border-radius:999px;background:#121822;color:#dfe3ea}.chip-row a:hover,.link-row a:hover{border-color:rgba(244,81,50,.5);color:#fff}.qa-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}.qa-card h3{font-size:18px}
.page-hero{padding:48px 0 28px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,#131923,#0d1016)}.page-hero .eyebrow{margin:0 0 8px;color:var(--primary);font-size:13px;font-weight:850;letter-spacing:.1em}.content-wrap{padding:32px 0 10px}.content-grid{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:24px;align-items:start}.prose{min-width:0}.prose section{background:var(--panel);border:1px solid var(--line);border-radius:15px;padding:24px;margin-bottom:18px}.prose h2{margin:0 0 10px;color:var(--text);font-size:23px}.prose h3{margin:16px 0 7px;color:var(--text);font-size:18px}.prose p{margin:0 0 13px}.prose p:last-child{margin-bottom:0}.prose ul{margin:8px 0 0;padding-left:1.2em}.prose li{margin:7px 0}.side-card{position:sticky;top:128px;background:#131923;border:1px solid var(--line);border-radius:15px;padding:18px}.side-card h2{margin:0 0 7px;color:var(--text);font-size:16px}.side-card p{margin:0 0 12px;color:var(--muted);font-size:14px}.side-card a{display:flex;align-items:center;min-height:42px;border-top:1px solid var(--line);color:#c6ccd7}.side-card a:hover{color:#fff}.page-media{margin-bottom:18px}.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.news-list,.topic-list{display:grid;gap:12px}.note-box{border-left:3px solid var(--gold);background:#181c24;padding:15px 17px;border-radius:0 10px 10px 0;color:var(--body)}
.site-footer{background:#090c11;border-top:1px solid var(--line);padding:34px 0 90px}.footer-brand-row{padding-bottom:22px;border-bottom:1px solid var(--line)}.footer-brand img{width:42px;height:42px;object-fit:contain;border-radius:10px}.footer-brand strong{color:#fff;font-size:18px}.footer-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;padding-top:24px}.footer-grid h2{margin:0 0 8px;color:#fff;font-size:15px}.footer-grid a{display:block;min-height:36px;padding:4px 0;color:#9099a9}.footer-grid a:hover{color:#fff}.footer-note{display:flex;justify-content:space-between;gap:20px;margin-top:24px;padding-top:18px;border-top:1px solid var(--line);color:#818a99;font-size:13px}.footer-note p{margin:0}.mobile-bottom{display:none}.back-top{position:fixed;right:20px;bottom:24px;width:44px;height:44px;border-radius:50%;background:var(--panel2);color:#fff;border:1px solid var(--line);z-index:8000;opacity:0;pointer-events:none;transition:.2s}.back-top.is-visible{opacity:1;pointer-events:auto}
.mobile-drawer,.drawer-mask{display:none}
@media(max-width:980px){.desktop-bar{display:none}.mobile-bar{display:grid;grid-template-columns:44px minmax(0,1fr) auto;align-items:center;gap:8px;height:64px;padding:0 12px;background:var(--nav)}.menu-btn{width:42px;height:42px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;border-radius:10px;background:#202735}.menu-btn span{width:20px;height:2px;background:#fff;border-radius:2px}.mobile-brand{display:flex;align-items:center;justify-content:center;gap:7px;min-width:0;color:#fff}.mobile-brand img{width:34px;height:34px;object-fit:contain;border-radius:9px}.mobile-brand strong{font-size:16px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.mobile-register{min-height:40px;padding:0 14px;font-size:14px}.channel-inner{justify-content:flex-start}.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:26px}.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{display:flex;align-items:center;justify-content:space-between;padding:14px;border-bottom:1px solid var(--line)}.drawer-brand img{width:38px;height:38px;object-fit:contain;border-radius:10px}.drawer-close{width:42px;height:42px;border-radius:10px;background:#202735;color:#fff;font-size:26px}.drawer-group{padding:14px;border-bottom:1px solid var(--line)}.drawer-group h2{margin:0 0 6px;color:#778194;font-size:12px;letter-spacing:.1em}.drawer-group a{display:flex;align-items:center;min-height:44px;color:#d1d6df}.content-grid{grid-template-columns:1fr}.side-card{position:static}.route-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.visual-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.qa-grid{grid-template-columns:1fr}.split-grid{grid-template-columns:1fr}.mobile-bottom{position:fixed;left:0;right:0;bottom:0;height:64px;background:#11161f;border-top:1px solid var(--line);z-index:8500;display:grid;grid-template-columns:repeat(4,1fr);padding-bottom:env(safe-area-inset-bottom)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;min-height:44px;color:#9ea8b9;font-size:13px}.mobile-bottom .bottom-register{color:var(--primary);font-weight:850}.site-main{padding-bottom:70px}.site-footer{padding-bottom:92px}.back-top{bottom:82px}}
@media(max-width:640px){.shell{width:min(calc(100% - 24px),var(--shell))}.slide .media{height:170px}.home-intro{padding-top:28px}.home-title,.page-hero h1{font-size:min(32px,8vw)}.home-lead,.page-hero p{font-size:16px}.home-section{padding:23px 0}.section-head{align-items:flex-start;flex-direction:column;gap:3px}.section-head h2{font-size:23px}.route-grid,.visual-grid,.card-grid{grid-template-columns:1fr}.visual-card .media-4x5{max-height:260px}.media-4x5{max-height:260px}.prose section{padding:19px}.prose h2{font-size:21px}.footer-grid{grid-template-columns:1fr}.footer-note{flex-direction:column}.channel-inner{gap:16px}}
@media(max-width:390px){.mobile-bar{grid-template-columns:42px minmax(0,1fr) 58px;padding:0 8px;gap:5px}.mobile-register{padding:0 10px;min-width:56px}.mobile-brand strong{font-size:15px}}