:root{
  --bg:#0C100E;--bg-deep:#080A09;--panel:#141A16;--panel-2:#1A2420;--title:#E8F6EE;--text:#CDE3D6;--muted:#8FB3A0;--quiet:#6E8F7E;--brand:#2A9D5C;--bright:#3CB371;--deep-green:#146B3A;--sand:#EFE6D2;--line:rgba(42,157,92,.18);--line-strong:rgba(42,157,92,.45);--shadow:0 12px 28px rgba(8,10,9,.35);--radius:12px;--max:1120px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth;background:var(--bg-deep)}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}body.ui-locked{overflow:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}img{display:block;max-width:100%}.topline{position:fixed;z-index:70;top:0;left:0;right:0;height:22px;background:#050706;border-bottom:1px solid var(--line)}.topline-inner,.mainbar-inner,.subtabs-inner{max-width:var(--max);height:100%;margin:0 auto;padding:0 20px;display:flex;align-items:center}.topline-inner{justify-content:space-between;font-size:12px;color:var(--bright);letter-spacing:.02em}.top-search-button{height:22px;padding:0 10px;border:0;background:transparent;color:var(--bright);border-radius:4px}.top-search-button:hover,.top-search-button:focus-visible{background:rgba(60,179,113,.12);outline:1px solid var(--line-strong)}.mainbar{position:fixed;z-index:69;top:22px;left:0;right:0;height:60px;background:rgba(8,10,9,.97);border-bottom:1px solid var(--line-strong);backdrop-filter:blur(8px)}.mainbar-inner{justify-content:space-between;gap:14px}.brand-link{height:44px;min-width:110px;display:inline-flex;align-items:center;gap:10px;color:var(--title);font-weight:700;font-size:16px}.brand-logo-slot{height:28px;max-width:160px;display:flex;align-items:center}.brand-logo{height:28px;width:auto;object-fit:contain;object-position:center}.brand-logo-slot:has(img)+.brand-fallback{display:none}.brand-fallback{white-space:nowrap}.drawer-toggle,.app-link{min-height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;font-size:14px}.drawer-toggle{min-width:92px;background:var(--panel);border:1px solid var(--line-strong);color:var(--text)}.drawer-toggle:hover,.drawer-toggle:focus-visible,.app-link:hover,.app-link:focus-visible,.btn-secondary:hover,.btn-secondary:focus-visible{border-color:var(--bright);outline:none;box-shadow:0 0 0 3px rgba(60,179,113,.08)}.app-link{min-width:92px;padding:0 18px;color:#08110C;background:linear-gradient(135deg,#3CB371 0%,#2A9D5C 55%,#146B3A 100%);font-weight:800}.subtabs{position:fixed;z-index:68;top:82px;left:0;right:0;height:40px;background:#102C1D;border-bottom:1px solid var(--line-strong)}.subtabs-inner{justify-content:center;gap:8px}.subtab{height:30px;min-width:112px;padding:0 18px;display:inline-flex;align-items:center;justify-content:center;border-radius:8px;color:var(--text);font-size:13px}.subtab:hover,.subtab:focus-visible{background:rgba(42,157,92,.18);outline:1px solid var(--line-strong)}.subtab.is-active{background:var(--brand);color:#08110C;font-weight:800}.site-main{max-width:var(--max);margin:0 auto;padding:154px 20px 72px;min-height:72vh}.page-hero{padding:26px 0 12px}.eyebrow{display:inline-block;color:var(--bright);font-size:12px;letter-spacing:.1em;text-transform:uppercase}.page-hero h1,.cover-copy h1{margin:8px 0 12px;color:var(--title);font-size:24px;line-height:1.3}.page-hero p,.cover-copy p{max-width:840px;margin:0;color:var(--muted)}.section{margin-top:30px}.section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:14px}.section h2,.section-head h2{margin:0;color:var(--title);font-size:20px;line-height:1.4}.section h3{margin:0 0 8px;color:var(--title);font-size:16px}.section p{margin:0 0 12px}.section-intro{max-width:820px;color:var(--muted)}.grid-2,.grid-3,.grid-4{display:grid;gap:16px}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}.card{background:linear-gradient(180deg,var(--panel) 0%,#101511 100%);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}.card p:last-child{margin-bottom:0}.card-kicker{display:block;color:var(--bright);font-size:12px;margin-bottom:7px}.card-link{margin-top:14px;display:inline-flex;min-height:44px;align-items:center;color:var(--sand);font-weight:700}.card-link:hover,.card-link:focus-visible{color:var(--bright);outline:none}.media-slot{width:100%;background:#080A09;border:1px solid var(--line);border-radius:12px;display:flex;align-items:center;justify-content:center;overflow:hidden}.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}.media-180{height:180px}.media-200{height:200px}.media-260{height:260px}.media-app{height:min(360px,65vw)}.cover-media{margin-bottom:18px}.cover-copy{text-align:left}.cover-copy p{max-width:900px}.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.btn-primary,.btn-secondary{height:44px;padding:0 18px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:800;white-space:nowrap}.btn-primary{background:linear-gradient(135deg,#3CB371 0%,#2A9D5C 55%,#146B3A 100%);color:#08110C;border:1px solid rgba(60,179,113,.45)}.btn-primary:hover,.btn-primary:focus-visible{filter:brightness(1.06);outline:3px solid rgba(60,179,113,.16)}.btn-secondary{background:#0A0D0B;color:var(--text);border:1px solid var(--line-strong)}.feature-card{padding:0;overflow:hidden}.feature-card .media-slot{border:0;border-bottom:1px solid var(--line);border-radius:0}.feature-body{padding:18px}.number-list{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:16px 0}.number-item{background:var(--panel-2);border:1px solid var(--line);border-radius:10px;padding:12px}.number-item strong{display:block;color:var(--bright);font-size:12px}.number-item span{display:block;color:var(--title);margin-top:4px}.lesson-list,.article-list,.plain-list{list-style:none;padding:0;margin:0;display:grid;gap:10px}.lesson-list li,.article-list li,.plain-list li{padding:12px 14px;background:var(--panel);border:1px solid var(--line);border-radius:10px}.lesson-list strong,.article-list strong{color:var(--sand);display:block;margin-bottom:3px}.timeline{position:relative;margin:8px 0 0;padding-left:28px}.timeline:before{content:"";position:absolute;left:8px;top:9px;bottom:9px;width:1px;background:var(--line-strong)}.timeline-item{position:relative;padding:0 0 22px 14px}.timeline-item:last-child{padding-bottom:0}.timeline-item:before{content:"";position:absolute;left:-25px;top:8px;width:11px;height:11px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 5px rgba(42,157,92,.13)}.timeline-item h3{margin-bottom:4px}.status{display:inline-flex;min-height:28px;align-items:center;padding:0 9px;border-radius:999px;background:#20382A;color:var(--sand);font-size:12px;border:1px solid var(--line-strong)}.prose{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:22px}.prose h2{margin:26px 0 10px}.prose h2:first-child{margin-top:0}.prose h3{margin:20px 0 8px}.prose p{margin:0 0 13px}.prose ul{margin:0 0 14px;padding-left:1.2em}.prose li{margin:5px 0}.meta-note{padding:14px 16px;border-left:3px solid var(--brand);background:#102018;color:var(--muted);border-radius:0 10px 10px 0}.faq-list{display:grid;gap:12px}.faq-item{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:18px}.faq-item h2{font-size:16px;margin:0 0 8px;color:var(--title)}.faq-item p{margin:0}.index-note{background:linear-gradient(135deg,#152119,#0d1510);border:1px solid var(--line-strong);border-radius:14px;padding:22px}.mini-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.mini-tags span{border:1px solid var(--line);background:#0d1511;color:var(--muted);border-radius:999px;padding:5px 10px;font-size:12px}.site-footer{background:#050706;border-top:1px solid var(--line-strong);color:var(--text)}.footer-inner{max-width:var(--max);margin:0 auto;padding:34px 20px calc(30px + env(safe-area-inset-bottom))}.footer-brand-row{margin-bottom:22px}.footer-brand{display:inline-flex;align-items:center;gap:12px}.footer-logo-slot{height:28px;max-width:160px}.footer-logo{height:28px;width:auto;object-fit:contain}.footer-brand strong,.footer-brand small{display:block}.footer-brand strong{font-size:16px;color:var(--title)}.footer-brand small{font-size:12px;color:var(--muted)}.footer-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.footer-grid h2{font-size:13px;color:var(--bright);margin:0 0 8px}.footer-grid a{display:block;min-height:32px;color:var(--text);font-size:13px}.footer-grid a:hover,.footer-grid a:focus-visible{color:var(--sand);outline:none}.footer-note{margin:24px 0 8px;color:var(--muted);font-size:13px}.footer-copy{margin:0;color:var(--quiet);font-size:13px}.ui-overlay{position:fixed;z-index:90;inset:0;background:rgba(0,0,0,.6);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s ease}.ui-overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.nav-drawer{position:fixed;z-index:100;left:0;top:0;bottom:0;width:min(400px,86vw);background:#080A09;border-right:1px solid var(--line-strong);box-shadow:20px 0 50px rgba(0,0,0,.45);transform:translateX(-102%);visibility:hidden;pointer-events:none;transition:transform .25s ease,visibility .25s}.nav-drawer.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{height:70px;padding:0 16px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.drawer-brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--title)}.drawer-logo-slot{height:28px;max-width:140px}.drawer-logo{height:28px;width:auto;object-fit:contain}.icon-close{min-height:44px;padding:0 12px;background:var(--panel);color:var(--text);border:1px solid var(--line-strong);border-radius:9px}.icon-close:hover,.icon-close:focus-visible{border-color:var(--bright);outline:none}.drawer-scroll{height:calc(100% - 70px);overflow-y:auto;padding:16px}.drawer-group{margin-bottom:18px}.drawer-group h2{margin:0 0 8px;color:var(--bright);font-size:13px}.drawer-group a{display:block;padding:12px;border:1px solid transparent;border-radius:10px}.drawer-group a:hover,.drawer-group a:focus-visible{background:var(--panel);border-color:var(--line);outline:none}.drawer-group strong{display:block;color:var(--title);font-size:14px}.drawer-group span{display:block;color:var(--muted);font-size:12px;margin-top:2px}.search-layer{position:fixed;z-index:101;left:0;right:0;top:82px;visibility:hidden;opacity:0;pointer-events:none;transition:opacity .2s ease,visibility .2s}.search-layer.is-open{visibility:visible;opacity:1;pointer-events:auto}.search-card{max-width:min(860px,calc(100vw - 32px));margin:14px auto 0;background:#080A09;border:1px solid var(--line-strong);border-radius:14px;box-shadow:var(--shadow);padding:20px}.search-head{display:flex;justify-content:space-between;align-items:start;gap:16px}.search-head h2{font-size:20px;color:var(--title);margin:2px 0 14px}.search-label{display:block;color:var(--muted);font-size:12px;margin-bottom:6px}.search-input{width:100%;height:46px;padding:0 14px;background:#101511;border:1px solid var(--line-strong);border-radius:10px;color:var(--title);outline:none}.search-input:focus{border-color:var(--bright);box-shadow:0 0 0 3px 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minmax(0,1.2fr);gap:18px;align-items:start}.app-icon-row{display:flex;align-items:center;gap:12px;margin:14px 0}.app-icon-slot{width:48px;height:48px;border-radius:12px;background:#080A09;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;overflow:hidden}.app-icon-slot img{width:48px;height:48px;object-fit:contain}.contact-box{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:18px}.contact-box strong{color:var(--sand)}
@media(max-width:820px){.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:1fr}.grid-2{grid-template-columns:1fr}.app-layout{grid-template-columns:1fr}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.number-list{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:640px){body{padding-bottom:calc(48px + env(safe-area-inset-bottom))}.topline-inner,.mainbar-inner{padding-left:16px;padding-right:16px}.topline-brand{max-width:70%;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.mainbar-inner{gap:8px}.brand-link{min-width:0;max-width:36%;font-size:16px}.brand-logo-slot{max-width:100%}.drawer-toggle,.app-link{min-width:76px;padding:0 10px}.subtabs{display:none}.site-main{padding:104px 16px 52px}.page-hero{padding-top:18px}.cover-media.media-260{height:260px}.media-180{height:180px}.media-200{height:200px}.grid-4{grid-template-columns:1fr}.footer-inner{padding-left:16px;padding-right:16px;padding-bottom:calc(84px + env(safe-area-inset-bottom))}.footer-grid{grid-template-columns:1fr 1fr}.search-layer{top:0;bottom:0;background:#080A09}.search-card{max-width:none;width:100%;height:100%;margin:0;border:0;border-radius:0;padding:calc(20px + env(safe-area-inset-top)) 16px 20px;overflow-y:auto}.search-presets{grid-template-columns:1fr}.mobile-bottom{position:fixed;z-index:75;left:0;right:0;bottom:0;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);display:grid;grid-template-columns:repeat(5,1fr);background:#050706;border-top:1px solid var(--line-strong)}.mobile-bottom a{min-height:48px;display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--text)}.mobile-bottom a.is-active{background:var(--brand);color:#08110C;font-weight:800}.mobile-bottom a:focus-visible{outline:2px solid var(--bright);outline-offset:-2px}.nav-drawer{width:86vw}.section{margin-top:24px}.prose{padding:18px}.actions{gap:8px}.btn-primary,.btn-secondary{flex:1 1 150px}.cover-copy h1,.page-hero h1{font-size:24px}.site-footer{margin-bottom:0}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}