:root{--bg:#0C100E;--deep:#080A09;--card:#141A16;--card2:#1A2420;--title:#E8F6EE;--text:#CDE3D6;--muted:#8FB3A0;--soft:#6E8F7E;--green:#2A9D5C;--bright:#3CB371;--darkg:#146B3A;--sand:#EFE6D2;--line:rgba(42,157,92,.18);--line2:rgba(42,157,92,.45);--shadow:0 12px 28px rgba(8,10,9,.35);--radius:12px;--top:122px}*{box-sizing:border-box}html{scroll-behavior:smooth}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;padding-bottom:0}body.locked{overflow:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}.shell{width:min(1120px,calc(100% - 32px));margin:0 auto}.skip-link{position:fixed;left:12px;top:-80px;z-index:100;background:var(--sand);color:var(--deep);padding:8px 12px;border-radius:8px}.skip-link:focus{top:8px}.topline{height:22px;background:var(--deep);color:var(--bright);position:fixed;inset:0 0 auto;z-index:60;border-bottom:1px solid var(--line)}.topline-inner{height:22px;display:flex;align-items:center;justify-content:space-between;font-size:12px}.text-button{border:0;background:transparent;color:var(--bright);padding:0 4px;min-height:22px;cursor:pointer}.brandbar{height:60px;background:#090d0b;position:fixed;top:22px;left:0;right:0;z-index:59;border-bottom:1px solid var(--line)}.brandbar-inner{height:100%;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px}.brand-home{justify-self:start;min-height:44px;display:inline-flex;align-items:center;color:var(--title);font-size:16px;font-weight:700}.brand-home img,.drawer-brand img,.footer-brand img{height:28px;width:auto;max-width:160px;object-fit:contain;object-position:center}.drawer-open{min-width:80px;height:44px;padding:0 18px;border:1px solid var(--line2);border-radius:999px;background:var(--card);color:var(--title);cursor:pointer}.app-link{justify-self:end;min-height:44px;display:inline-flex;align-items:center;padding:0 15px;border-radius:10px;background:linear-gradient(135deg,#3CB371 0%,#2A9D5C 55%,#146B3A 100%);color:#08110C;font-weight:800;white-space:nowrap}.tabbar{height:40px;position:fixed;top:82px;left:0;right:0;z-index:58;background:#0f2a1c;border-bottom:1px solid var(--line2)}.tabbar-inner{height:100%;display:flex;align-items:center;justify-content:center;gap:8px}.tabbar a{height:32px;display:flex;align-items:center;padding:0 16px;border-radius:8px;color:var(--text);font-size:13px}.tabbar a.is-active{background:var(--green);color:var(--deep);font-weight:800}.main-content{padding-top:calc(var(--top) + 24px);min-height:60vh}.hero,.page-head{padding:22px 0 8px}.eyebrow{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--bright);margin:0 0 8px}.hero h1,.page-head h1{font-size:24px;line-height:1.3;color:var(--title);margin:0 0 12px}.lead{max-width:820px;color:var(--text);margin:0}.brand-slogan{color:var(--sand);font-size:18px;font-weight:700}.section{padding:20px 0}.section h2{font-size:20px;color:var(--title);margin:0 0 12px}.section h3{font-size:16px;color:var(--title);margin:0 0 8px}.muted{color:var(--muted)}.mt-14{margin-top:14px}.media-slot{width:100%;height:180px;background:var(--deep);border:1px solid var(--line);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;overflow:hidden}.media-slot.banner{height:260px}.media-slot.week{height:200px}.media-slot.app-shot{height:360px}.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}.button-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}.btn{height:42px;display:inline-flex;align-items:center;justify-content:center;padding:0 18px;border-radius:10px;font-size:14px;font-weight:800;min-width:132px}.btn.primary{background:linear-gradient(135deg,#3CB371 0%,#2A9D5C 55%,#146B3A 100%);color:#08110C}.btn.secondary{background:var(--deep);border:1px solid var(--line2);color:var(--text)}.btn:hover,.app-link:hover,.drawer-open:hover,.tabbar a:hover,.mobile-nav a:hover{filter:brightness(1.08)}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid var(--sand);outline-offset:2px}.grid-3,.grid-4,.grid-2{display:grid;gap:14px}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow)}.card p{margin:.35em 0;color:var(--text)}.card .kicker{color:var(--bright);font-size:12px}.number-list{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-top:12px}.number-list div{background:var(--card2);border:1px solid var(--line);border-radius:10px;padding:12px}.number-list strong{display:block;color:var(--sand);font-size:18px}.lesson-list,.article-list,.timeline,.faq-list{display:grid;gap:12px}.lesson-item,.article-item,.timeline-item,.faq-item{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px}.lesson-item strong,.article-item h3,.timeline-item h3,.faq-item h2{color:var(--title)}.timeline{position:relative}.timeline-item{margin-left:18px;position:relative}.timeline-item:before{content:"";position:absolute;left:-26px;top:21px;width:10px;height:10px;background:var(--bright);border-radius:50%;box-shadow:0 0 0 5px rgba(60,179,113,.12)}.status{display:inline-flex;align-items:center;min-height:28px;padding:0 10px;border-radius:999px;background:#0b2417;border:1px solid var(--line2);color:var(--text);font-size:12px}.prose{max-width:900px}.prose p{margin:0 0 14px}.prose ul{padding-left:20px}.prose li{margin:6px 0}.notice{background:#102218;border-left:3px solid var(--bright);padding:14px 16px;border-radius:8px;color:var(--text)}.site-footer{margin-top:30px;background:#050706;border-top:1px solid var(--line2);color:var(--text);font-size:13px}.footer-top{padding:28px 0 70px}.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}.footer-brand div{display:flex;flex-direction:column}.footer-brand strong{color:var(--title);font-size:16px}.footer-brand span{color:var(--muted)}.footer-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}.footer-grid h2{font-size:13px;color:var(--sand);margin:0 0 8px}.footer-grid a{display:block;color:var(--muted);padding:3px 0}.footer-grid a:hover{color:var(--title)}.footer-note{max-width:900px;margin:22px 0 6px;color:var(--muted)}.copyright{color:var(--soft);margin:0}.overlay{position:fixed;inset:0;z-index:70;background:rgba(0,0,0,.58);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.overlay.is-active{opacity:1;visibility:visible;pointer-events:auto}.drawer{position:fixed;z-index:80;left:0;top:0;bottom:0;width:min(400px,86vw);background:#09100c;border-right:1px solid var(--line2);transform:translateX(-102%);visibility:hidden;pointer-events:none;transition:.25s;display:flex;flex-direction:column}.drawer.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{height:64px;flex:0 0 auto;display:flex;align-items:center;justify-content:space-between;padding:0 16px;border-bottom:1px solid var(--line)}.drawer-head button,.search-head button{min-height:44px;padding:0 14px;border:1px solid var(--line2);border-radius:9px;background:var(--deep);color:var(--text);cursor:pointer}.drawer-brand{display:flex;align-items:center;gap:10px;color:var(--title)}.drawer-scroll{overflow:auto;padding:14px 16px 24px}.drawer-scroll section+section{margin-top:16px}.drawer-scroll h2{font-size:12px;color:var(--bright);margin:0 0 6px}.drawer-scroll a{display:block;padding:10px 8px;border-radius:8px;border-bottom:1px solid var(--line)}.drawer-scroll a:hover{background:var(--card)}.drawer-scroll strong{display:block;color:var(--title);font-size:14px}.drawer-scroll span{display:block;color:var(--muted);font-size:12px;line-height:1.5}.search-layer{position:fixed;z-index:79;left:0;right:0;top:82px;visibility:hidden;opacity:0;pointer-events:none;transition:.2s}.search-layer.is-open{visibility:visible;opacity:1;pointer-events:auto}.search-card{width:min(720px,calc(100% - 32px));margin:12px auto 0;background:var(--deep);border:1px solid var(--line2);border-radius:14px;padding:16px;box-shadow:var(--shadow)}.search-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.search-head strong{color:var(--title)}.search-card label{display:block;color:var(--muted);margin-bottom:6px}.search-card input{width:100%;height:44px;background:var(--card);color:var(--title);border:1px solid var(--line2);border-radius:10px;padding:0 12px}.search-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-top:12px}.search-links a{min-height:44px;display:flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:9px;background:var(--card2);color:var(--text)}.search-empty{color:var(--muted);margin:12px 0 0}.mobile-nav{display:none}.article-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}.article-meta span{font-size:12px;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:2px 8px}.index-brand-copy{padding-top:14px}.faq-item h2{font-size:16px;margin:0 0 6px}.faq-item p{margin:0}.toc-pills{display:flex;flex-wrap:wrap;gap:8px}.toc-pills a{min-height:40px;display:inline-flex;align-items:center;padding:0 12px;border:1px solid var(--line);border-radius:999px;background:var(--card);color:var(--text)}
@media(max-width:860px){:root{--top:82px}.tabbar{display:none}.main-content{padding-top:calc(var(--top) + 18px)}.grid-3,.grid-4,.grid-2{grid-template-columns:1fr}.number-list{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.mobile-nav{position:fixed;z-index:57;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:#070a08;border-top:1px solid var(--line2)}.mobile-nav a{display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--muted);min-height:48px}.mobile-nav a.is-active{background:var(--green);color:var(--deep);font-weight:800}.footer-top{padding-bottom:90px}.search-layer{top:0;bottom:0;background:var(--deep);padding-top:12px}.search-card{width:calc(100% - 24px);height:calc(100% - 24px);margin:0 auto;border-radius:14px;overflow:auto}.search-links{grid-template-columns:1fr}.media-slot.banner{height:220px}.media-slot.app-shot{height:320px}.hero h1,.page-head h1{font-size:23px}}
@media(max-width:520px){.shell{width:min(100% - 32px,1120px)}.brandbar-inner{grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);gap:6px}.brand-home{max-width:100%;overflow:hidden}.brand-home img{max-width:110px}.drawer-open{min-width:68px;padding:0 12px}.app-link{padding:0 10px;font-size:13px}.number-list{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.media-slot.banner{height:200px}.media-slot{height:170px}.button-row{display:grid;grid-template-columns:1fr}.btn{width:100%}}