:root{--bg:#0C100E;--deep:#080A09;--card:#141A16;--sub:#1A2420;--title:#E8F6EE;--text:#CDE3D6;--muted:#8FB3A0;--aux:#6E8F7E;--green:#2A9D5C;--bright:#3CB371;--darkgreen:#146B3A;--sand:#EFE6D2;--border:rgba(42,157,92,.18);--border2:rgba(42,157,92,.45);--shadow:0 12px 28px rgba(8,10,9,.35);--max:1120px)}
*{box-sizing:border-box}html{scroll-behavior:smooth;overflow-x:hidden}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.7 system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;overflow-x:hidden}body.locked{overflow:hidden}a{color:inherit;text-decoration:none}button{font:inherit}img{max-width:100%;display:block}.topline{position:fixed;z-index:80;top:0;left:0;right:0;height:22px;background:var(--deep);color:var(--bright);border-bottom:1px solid var(--border)}.bar-inner{max-width:var(--max);height:100%;margin:auto;padding:0 18px;display:flex;align-items:center;justify-content:space-between;gap:16px}.top-brand{font-size:12px;line-height:22px;white-space:nowrap}.text-button{border:0;background:transparent;color:var(--bright);height:22px;padding:0 8px;cursor:pointer;font-size:12px}.mainbar{position:fixed;z-index:79;top:22px;left:0;right:0;height:60px;background:rgba(8,10,9,.98);border-bottom:1px solid var(--border2)}.mainbar-inner{display:grid;grid-template-columns:1fr auto 1fr}.brand-lockup{justify-self:start;display:flex;align-items:center;min-width:44px;height:44px;font-weight:800;font-size:16px;color:var(--title)}.brand-logo{height:28px;width:auto;max-width:150px;object-fit:contain;object-position:center}.menu-button{min-width:92px;height:44px;border:1px solid var(--border2);border-radius:11px;background:var(--card);color:var(--text);display:flex;align-items:center;justify-content:center;gap:8px;cursor:pointer}.menu-button b{color:var(--bright);font-size:15px}.app-link{justify-self:end;min-width:88px;height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:11px;background:linear-gradient(135deg,#3CB371 0%,#2A9D5C 55%,#146B3A 100%);color:#08110C;font-weight:800;font-size:14px}.layer-tabs{position:fixed;z-index:78;top:82px;left:0;right:0;height:40px;background:var(--darkgreen);border-bottom:1px solid var(--border2)}.tabs-inner{max-width:var(--max);height:40px;margin:auto;display:flex;justify-content:center;align-items:stretch}.tabs-inner a{min-width:132px;display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--sand);border-inline:1px solid rgba(232,246,238,.06)}.tabs-inner a.active{background:var(--green);color:#08110C;font-weight:800}.site-main{max-width:var(--max);margin:0 auto;padding:154px 18px 48px;min-height:70vh}.page-head{margin-bottom:24px}.eyebrow{font-size:12px;letter-spacing:.14em;color:var(--bright);text-transform:uppercase}.page-head h1,.hero-copy h1{margin:6px 0 12px;color:var(--title);font-size:24px;line-height:1.3}.lede{max-width:820px;color:var(--muted);margin:0}.section{margin:28px 0}.section-title{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:14px}.section-title h2{margin:0;color:var(--title);font-size:20px}.section-title p{margin:0;color:var(--aux);font-size:13px}.card{background:var(--card);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow);padding:20px}.card h2{font-size:20px;margin:0 0 10px;color:var(--title)}.card h3{font-size:16px;margin:0 0 8px;color:var(--sand)}.card p{margin:0 0 12px}.card p:last-child{margin-bottom:0}.muted{color:var(--muted)}.aux{color:var(--aux)}.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))}.hero{display:grid;gap:18px;margin-bottom:30px}.media-slot{width:100%;background:var(--deep);border:1px solid var(--border);border-radius:14px;min-height:150px;display:flex;align-items:center;justify-content:center;overflow:hidden}.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}.banner-slot{height:260px}.thumb-slot{height:180px}.wide-slot{height:200px}.app-slot{height:360px;max-width:520px;margin-inline:auto}.icon-slot{width:64px;height:64px;min-height:64px;border-radius:14px}.hero-copy{text-align:left;max-width:860px}.hero-copy .brandline{color:var(--bright);font-size:13px}.hero-actions,.button-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:18px}.btn{min-height:42px;padding:0 18px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;font-size:14px;font-weight:800;white-space:nowrap;border:1px solid transparent}.btn.primary{background:linear-gradient(135deg,#3CB371 0%,#2A9D5C 55%,#146B3A 100%);color:#08110C}.btn.secondary{background:var(--deep);border-color:var(--border2);color:var(--text)}a:focus-visible,button:focus-visible{outline:2px solid var(--sand);outline-offset:3px}.btn:hover,.app-link:hover{filter:brightness(1.07)}.link-card{display:block;transition:transform .18s ease,border-color .18s ease}.link-card:hover{transform:translateY(-2px);border-color:var(--border2)}.link-card h3{display:flex;justify-content:space-between;gap:8px}.link-card h3::after{content:'→';color:var(--bright)}.number-list{display:grid;gap:10px;counter-reset:item}.number-row{display:grid;grid-template-columns:44px 1fr;gap:12px;align-items:start;padding:14px 0;border-bottom:1px solid var(--border)}.number-row:last-child{border-bottom:0}.number-row b{width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;background:var(--green);color:#08110C}.lesson-list,.plain-list{margin:0;padding:0;list-style:none;display:grid;gap:10px}.lesson-list li,.plain-list li{padding:13px 14px;background:var(--sub);border:1px solid var(--border);border-radius:10px}.timeline{position:relative;margin-left:9px;padding-left:26px}.timeline::before{content:'';position:absolute;left:6px;top:8px;bottom:8px;width:1px;background:var(--border2)}.timeline-item{position:relative;padding:0 0 22px}.timeline-item::before{content:'';position:absolute;left:-25px;top:8px;width:11px;height:11px;border-radius:50%;background:var(--bright);box-shadow:0 0 0 4px rgba(60,179,113,.12)}.status{display:inline-flex;align-items:center;min-height:26px;padding:0 9px;border-radius:999px;background:var(--green);color:#08110C;font-size:12px;font-weight:800}.prose{display:grid;gap:16px}.prose section{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:20px}.prose h2{font-size:20px;margin:0 0 10px;color:var(--title)}.prose h3{font-size:16px;margin:14px 0 7px;color:var(--sand)}.prose p{margin:0 0 10px}.prose p:last-child{margin-bottom:0}.quote-note{border-left:3px solid var(--green);padding:12px 14px;background:var(--sub);border-radius:0 10px 10px 0;color:var(--muted)}.faq-list{display:grid;gap:12px}.faq-item{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:18px}.faq-item h2{font-size:16px;margin:0 0 8px;color:var(--sand)}.faq-item p{margin:0}.index-badge{display:inline-flex;min-height:30px;align-items:center;padding:0 10px;border:1px solid var(--border2);border-radius:999px;color:var(--bright);font-size:12px}.site-footer{background:#050706;border-top:1px solid var(--border2);color:var(--text);padding:34px 18px calc(34px + env(safe-area-inset-bottom))}.footer-inner{max-width:var(--max);margin:auto}.footer-brand{display:grid;gap:10px;max-width:880px}.footer-logo-line{display:flex;align-items:center;gap:10px}.footer-logo-line strong{color:var(--title)}.footer-logo-line span{color:var(--muted);font-size:13px}.footer-brand p{font-size:13px;color:var(--muted);margin:0}.footer-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;margin-top:26px}.footer-grid h2{font-size:13px;color:var(--bright);margin:0 0 8px}.footer-grid a{display:block;font-size:13px;color:var(--text);padding:4px 0}.footer-bottom{margin-top:24px;padding-top:16px;border-top:1px solid var(--border);color:var(--aux);font-size:13px}.drawer{position:fixed;z-index:110;left:0;top:0;bottom:0;width:400px;max-width:86vw;background:var(--deep);border-right:1px solid var(--border2);box-shadow:var(--shadow);transform:translateX(-104%);visibility:hidden;pointer-events:none;transition:transform .22s ease,visibility .22s ease;overflow-y:auto}.drawer.open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{position:sticky;top:0;z-index:2;height:68px;padding:0 16px;display:flex;align-items:center;justify-content:space-between;background:rgba(8,10,9,.98);border-bottom:1px solid var(--border)}.drawer-brand{display:flex;align-items:center;gap:10px;color:var(--title)}.icon-button{min-height:44px;border:1px solid var(--border2);background:var(--card);color:var(--text);border-radius:10px;padding:0 14px;cursor:pointer}.drawer-body{padding:16px}.drawer-body section{margin-bottom:22px}.drawer-body h2{font-size:13px;color:var(--bright);margin:0 0 8px}.drawer-body a{display:block;padding:11px 12px;border-radius:10px;border:1px solid transparent}.drawer-body a:hover{background:var(--card);border-color:var(--border)}.drawer-body b{display:block;font-size:14px;color:var(--title)}.drawer-body span{display:block;color:var(--muted);font-size:12px;margin-top:2px}.overlay{position:fixed;z-index:100;inset:0;background:rgba(3,5,4,.72);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s ease,visibility .2s ease}.overlay.show{opacity:1;visibility:visible;pointer-events:auto}.search-panel{position:fixed;z-index:120;left:0;right:0;top:82px;visibility:hidden;pointer-events:none;opacity:0;transform:translateY(-8px);transition:.18s ease}.search-panel.open{visibility:visible;pointer-events:auto;opacity:1;transform:none}.search-card{max-width:780px;margin:12px auto;padding:18px;border:1px solid var(--border2);border-radius:14px;background:var(--deep);box-shadow:var(--shadow)}.search-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.search-card p{color:var(--muted)}.search-presets{display:flex;flex-wrap:wrap;gap:10px}.search-presets a{min-height:40px;padding:0 14px;display:inline-flex;align-items:center;border:1px solid var(--border2);border-radius:10px;background:var(--card)}.mobile-bottom{display:none}.two-media{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.25fr);gap:18px;align-items:center}.callout{background:var(--sub);border:1px solid var(--border2);border-radius:12px;padding:18px}.callout strong{color:var(--title)}
@media(max-width:820px){.grid-3,.grid-4{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}.two-media{grid-template-columns:1fr}.layer-tabs{display:none}.site-main{padding:112px 16px 78px}.bar-inner{padding:0 16px}.search-panel{top:0;bottom:0;background:var(--deep);overflow-y:auto}.search-card{margin:0;min-height:100%;border:0;border-radius:0;box-shadow:none;padding:24px 16px}.mobile-bottom{position:fixed;z-index:90;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:rgba(8,10,9,.98);border-top:1px solid var(--border2)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;min-width:0;font-size:12px;color:var(--text)}.mobile-bottom a.active{background:var(--green);color:#08110C;font-weight:800}.site-footer{padding-bottom:calc(82px + env(safe-area-inset-bottom))}.mainbar-inner{grid-template-columns:1fr auto 1fr}.brand-lockup,.app-link,.menu-button{min-width:0}.app-link{width:82px}.menu-button{width:76px}.banner-slot{height:260px}.app-slot{height:340px}}
@media(max-width:560px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr;gap:18px}.mainbar-inner{padding-inline:12px}.brand-logo{max-width:110px}.brand-lockup{font-size:15px}.menu-button{width:72px}.menu-button span{font-size:13px}.app-link{width:76px;font-size:13px}.card,.prose section{padding:16px}.section-title{align-items:start;flex-direction:column;gap:4px}.hero-copy h1,.page-head h1{font-size:24px}.media-slot{border-radius:12px}.banner-slot{height:260px}.thumb-slot{height:180px}.wide-slot{height:200px}.app-slot{height:320px}}