:root{--bg:#111722;--panel:#18202D;--panel2:#1E2736;--accent:#253044;--gold:#F0D89A;--gold2:#E4C77D;--text:#E8EDF6;--muted:#BAC3D2;--soft:#8F9AAF;--foot:#0B1018;--line:rgba(240,216,154,.14);--shadow:0 16px 42px rgba(0,0,0,.26);--max:1280px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.8;overflow-x:hidden}body.drawer-open{overflow:hidden}img{max-width:100%;height:auto}a{color:inherit;text-decoration:none}button{font:inherit}main{display:block}.container{width:min(100% - 40px,var(--max));margin:0 auto}.article{width:min(100% - 40px,860px);margin:0 auto}.site-header{position:sticky;top:0;z-index:9999;width:100%;background:#111722;box-shadow:0 10px 30px rgba(0,0,0,.24)}.header-inner{max-width:1280px;min-height:72px;margin:0 auto;padding:0 22px;display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:24px}.brand-logo img,.mobile-logo img,.drawer-logo img{height:46px;width:auto;max-width:165px;object-fit:contain;display:block}.logo-fallback{font-weight:800;color:var(--gold);font-size:24px;white-space:nowrap}.main-nav{display:flex;justify-content:center;align-items:center;gap:clamp(12px,2vw,28px);min-width:0}.nav-link{white-space:nowrap;color:var(--muted);font-weight:700;font-size:15px}.nav-link:hover,.nav-link.is-active{color:var(--gold)}.header-actions{display:flex;gap:10px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:0 16px;border-radius:999px;border:1px solid var(--line);font-weight:800;white-space:nowrap}.btn-gold{background:var(--gold);color:#111722;border-color:var(--gold)}.btn-gold:hover{background:var(--gold2)}.btn-ghost{background:#18202D;color:var(--text)}.category-strip{border-top:1px solid rgba(255,255,255,.04);background:#161d29}.category-inner{max-width:1280px;margin:0 auto;padding:0 22px;display:flex;gap:22px;overflow-x:auto;scrollbar-width:thin}.category-inner a{flex:0 0 auto;padding:11px 0;color:var(--soft);font-size:14px}.category-inner a:hover{color:var(--gold)}.mobile-header,.mobile-drawer,.drawer-overlay,.mobile-bottom{display:none}.section{padding:84px 0}.section.compact{padding:58px 0}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--gold);font-size:13px;font-weight:800;letter-spacing:.12em;text-transform:uppercase}.hero-copy h1,.page-hero h1{margin:10px 0 18px;font-size:clamp(44px,4.8vw,54px);line-height:1.14;color:var(--gold)}.hero-copy p,.page-hero p{max-width:760px;margin:0;color:var(--muted);font-size:18px}.page-hero{padding:86px 0 42px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.hero-slider{position:relative}.hero-slide{display:none}.hero-slide.is-active{display:grid;grid-template-columns:minmax(0,1fr) minmax(360px,1.2fr);gap:28px;align-items:center}.hero-dots{display:flex;gap:8px;margin-top:18px}.hero-dot{width:34px;height:5px;border:0;border-radius:999px;background:#3a4658;cursor:pointer}.hero-dot.is-active{background:var(--gold)}.media{position:relative;width:100%;max-width:100%;overflow:hidden;border-radius:16px;background:#111722;border:1px solid rgba(240,216,154,.10)}.media img{position:absolute;inset:0;width:100%;height:100%;display:block;object-fit:contain;object-position:center center}.media-placeholder{position:absolute;inset:0;background:linear-gradient(135deg,#161d29,#202a39)}.hero-media{aspect-ratio:16/7;min-height:260px;max-height:380px}.topic-media{aspect-ratio:16/10;min-height:150px;max-height:210px}.standard-media{aspect-ratio:4/3;min-height:220px;max-height:320px}.app-media{aspect-ratio:4/3;min-height:210px;max-height:300px}.panel{background:var(--panel);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}.panel-pad{padding:28px}.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.guide-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:24px}.stack{display:grid;gap:18px}.feature-split{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:34px;align-items:center}.wide-narrow{display:grid;grid-template-columns:1.35fr .65fr;gap:22px;align-items:start}.channel-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;grid-auto-rows:minmax(150px,auto);gap:18px}.channel-grid .wide{grid-row:span 2}.topic-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.topic-card{background:var(--panel2);border:1px solid var(--line);border-radius:14px;padding:16px;min-width:0}.topic-card h3{margin:14px 0 4px;color:var(--gold);font-size:18px}.topic-card p{margin:0 0 10px;color:var(--muted);font-size:14px}.text-link{color:var(--gold);font-weight:800}.text-link:hover{color:var(--gold2)}h2{margin:0 0 16px;color:var(--gold);font-size:clamp(26px,3vw,34px);line-height:1.25}h3{color:#f1e4b8}p{margin:0 0 14px}.section-lead{max-width:760px;color:var(--muted);margin-bottom:30px}.timeline{display:grid;gap:0;border-left:1px solid var(--line);padding-left:28px}.timeline-item{position:relative;padding:0 0 24px}.timeline-item:before{content:"";position:absolute;left:-34px;top:8px;width:11px;height:11px;border-radius:50%;background:var(--gold);box-shadow:0 0 0 5px rgba(240,216,154,.09)}.timeline-item h3{margin:0 0 6px;font-size:18px}.timeline-item p{color:var(--muted);margin:0}.list-clean{list-style:none;padding:0;margin:0;display:grid;gap:12px}.list-clean li{padding:14px 16px;border-left:3px solid var(--gold);background:var(--panel2);border-radius:0 12px 12px 0;color:var(--muted)}.info-row{display:grid;grid-template-columns:160px 1fr;gap:20px;padding:18px 0;border-bottom:1px solid rgba(255,255,255,.07)}.info-row:last-child{border-bottom:0}.info-row strong{color:var(--gold)}.feedback-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.quote{padding:20px;border-radius:14px;background:var(--panel2);border:1px solid rgba(255,255,255,.06);color:var(--muted)}.faq-list{display:grid;gap:14px}.faq-item{padding:22px;border-radius:14px;background:var(--panel2);border:1px solid rgba(255,255,255,.06)}.faq-item h3{margin:0 0 8px;font-size:18px}.faq-item p{margin:0;color:var(--muted)}.notice{padding:22px 24px;border-radius:16px;background:#151c27;border:1px solid var(--line);color:var(--muted)}.notice strong{color:var(--gold)}.tag-row{display:flex;gap:10px;flex-wrap:wrap}.tag{display:inline-flex;padding:7px 12px;border-radius:999px;background:var(--accent);color:var(--muted);font-size:14px}.site-footer{background:var(--foot);padding:56px 20px 24px;margin-top:70px}.footer-grid{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:1.6fr repeat(3,1fr);gap:34px}.footer-grid h2{font-size:17px;margin-bottom:12px}.footer-grid>div{display:flex;flex-direction:column;gap:8px}.footer-grid a{color:var(--muted)}.footer-grid a:hover{color:var(--gold)}.footer-brand p{max-width:420px;color:var(--soft)}.footer-bottom{max-width:1280px;margin:34px auto 0;padding-top:22px;border-top:1px solid rgba(255,255,255,.06);display:flex;justify-content:space-between;gap:30px;color:var(--soft);font-size:13px}.desktop-tools{position:fixed;right:18px;bottom:20px;z-index:800;display:grid;gap:8px}.desktop-tools a,.desktop-tools button{display:flex;align-items:center;justify-content:center;min-width:104px;min-height:38px;padding:0 12px;border-radius:10px;border:1px solid var(--line);background:#18202D;color:var(--muted);font:inherit;font-size:13px;cursor:pointer}.desktop-tools .tool-gold{background:var(--gold);color:#111722;font-weight:800}.three-bands{display:grid;grid-template-columns:1.25fr .9fr 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@media(max-width:1100px){.header-inner{gap:14px;padding:0 16px}.main-nav{gap:12px}.nav-link{font-size:14px}.btn{padding:0 12px}.topic-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.channel-grid{grid-template-columns:1fr 1fr}.channel-grid .wide{grid-row:auto;grid-column:1/-1}.desktop-tools{display:none}}
@media(max-width:820px){.desktop-header{display:none}.mobile-header{min-height:64px;padding:0 14px;display:grid;grid-template-columns:86px minmax(0,1fr) 108px;align-items:center}.menu-toggle{width:42px;height:42px;padding:10px;border-radius:10px;border:1px solid var(--line);background:var(--panel);display:grid;gap:4px;align-content:center}.menu-toggle span{height:2px;background:var(--text);display:block}.mobile-logo{justify-self:center}.mobile-logo img{height:42px;max-width:150px}.mobile-register{justify-self:end;min-height:38px;padding:0 12px;font-size:13px}.drawer-overlay{position:fixed;inset:0;background:rgba(0,0,0,.58);z-index:10000}.drawer-overlay.is-open{display:block}.mobile-drawer{display:block;position:fixed;inset:0 auto 0 0;width:min(86vw,330px);background:#18202D;z-index:10001;transform:translateX(-105%);transition:transform .25s ease;overflow-y:auto}.mobile-drawer.is-open{transform:translateX(0)}.drawer-head{min-height:66px;padding:10px 14px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid rgba(255,255,255,.07)}.drawer-logo img{height:42px;max-width:150px}.drawer-close{width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:var(--panel2);color:var(--text);font-size:26px}.drawer-nav{padding:12px 16px 28px;display:grid}.drawer-nav h2{font-size:14px;letter-spacing:.08em;color:var(--gold);margin:18px 0 6px}.drawer-nav a{padding:10px 4px;color:var(--muted);border-bottom:1px solid rgba(255,255,255,.05)}.section{padding:58px 0}.page-hero{padding:62px 0 32px}.hero-copy h1,.page-hero h1{font-size:clamp(36px,6vw,44px)}.hero-slide.is-active,.guide-layout,.feature-split,.wide-narrow,.two-col-article{grid-template-columns:1fr}.hero-slide.is-active .hero-copy{order:2}.hero-slide.is-active .hero-media{order:1}.hero-media{aspect-ratio:16/8;min-height:220px;max-height:320px}.topic-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-3{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}.footer-bottom{flex-direction:column}.three-bands{grid-template-columns:1fr 1fr}.three-bands>div:first-child{grid-column:1/-1}.mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:9000;min-height:60px;display:grid;grid-template-columns:repeat(5,1fr);background:#0f151f;border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:13px}body{padding-bottom:60px}.desktop-tools{display:none}}
@media(max-width:560px){.container,.article{width:min(100% - 28px,var(--max))}.mobile-header{grid-template-columns:74px minmax(0,1fr) 98px;padding:0 10px}.mobile-logo img{height:40px;max-width:132px}.mobile-register{font-size:12px;padding:0 9px}.hero-copy h1,.page-hero h1{font-size:clamp(30px,9vw,36px)}.hero-copy p,.page-hero p{font-size:16px}.hero-media{aspect-ratio:16/10;min-height:190px;max-height:280px}.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.topic-card{padding:12px}.grid-2,.grid-3,.feedback-grid,.three-bands{grid-template-columns:1fr}.three-bands>div:first-child{grid-column:auto}.channel-grid{grid-template-columns:1fr}.channel-grid .wide{grid-column:auto}.panel-pad{padding:20px}.section{padding:50px 0}.page-hero{padding:48px 0 26px}.info-row{grid-template-columns:1fr;gap:6px}.footer-grid{grid-template-columns:1fr}.site-footer{padding-left:14px;padding-right:14px}.topic-media{min-height:140px}.standard-media{min-height:200px}.app-media{min-height:190px}}