:root{--bg:#0C100E;--deep:#080A09;--panel:#141A16;--panel2:#1A2420;--title:#E8F6EE;--text:#CDE3D6;--muted:#8FB3A0;--soft:#6E8F7E;--green:#2A9D5C;--bright:#3CB371;--darkgreen:#146B3A;--sand:#EFE6D2;--line:rgba(42,157,92,.18);--line2:rgba(42,157,92,.45);--shadow:0 12px 28px rgba(8,10,9,.35);--max:1120px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,"Segoe UI","Microsoft YaHei","PingFang SC",sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}img{display:block;max-width:100%}.wrap{width:min(calc(100% - 32px),var(--max));margin:0 auto}.skip-link{position:fixed;left:16px;top:-60px;z-index:200;background:var(--sand);color:#08110C;padding:8px 12px;border-radius:8px}.skip-link:focus{top:8px}.signal-bar{position:fixed;z-index:90;top:0;left:0;right:0;height:22px;background:#050706;border-bottom:1px solid var(--line)}.signal-inner{height:22px;display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--bright)}.signal-brand{white-space:nowrap}.text-control,.close-control{min-height:44px;border:0;background:transparent;color:var(--title);padding:0 10px}.signal-bar .text-control{min-height:22px;height:22px;font-size:12px;color:var(--bright);position:relative}.signal-bar .text-control:after{content:"";position:absolute;inset:-11px -8px}.site-header{position:fixed;z-index:85;top:22px;left:0;right:0;height:60px;background:var(--deep);border-bottom:1px solid var(--line2)}.header-inner{height:60px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px}.brand-link{justify-self:start;display:flex;align-items:center;min-height:44px;min-width:80px}.brand-logo{height:28px;width:auto;object-fit:contain;object-position:center}.brand-text{font-size:16px;font-weight:800;color:var(--title)}.drawer-trigger{justify-self:center;height:44px;min-width:76px;border:1px solid var(--line2);border-radius:12px;background:var(--panel);color:var(--text);font-size:14px}.app-link{justify-self:end;display:inline-flex;align-items:center;justify-content:center;height:44px;min-width:88px;border-radius:12px;background:linear-gradient(135deg,#3CB371 0%,#2A9D5C 55%,#146B3A 100%);color:#08110C;font-weight:800;font-size:14px}.quick-tabs{position:fixed;z-index:80;top:82px;left:0;right:0;height:40px;background:var(--darkgreen);border-bottom:1px solid var(--line2)}.quick-tabs-inner{height:40px;display:flex;align-items:center;justify-content:center;gap:6px}.quick-tabs a{height:32px;display:inline-flex;align-items:center;padding:0 14px;border-radius:8px;color:var(--title);font-size:13px}.quick-tabs a.active{background:var(--green);color:#08110C;font-weight:800}.site-main{padding-top:146px;padding-bottom:52px}.page-shell{padding-bottom:36px}.page-hero{padding:28px 0 18px}.eyebrow{margin:0 0 8px;color:var(--bright);font-size:12px;letter-spacing:.08em}.page-hero h1,.cover-copy h1{margin:0;color:var(--title);font-size:24px;line-height:1.3}.page-hero p,.cover-copy p{max-width:820px;color:var(--text);margin:12px 0 0}.content-section{margin:18px 0;padding:22px;background:var(--panel);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow)}.content-section h2,.split-card h2,.timeline-item h2{font-size:20px;line-height:1.35;color:var(--title);margin:0 0 12px}.content-section h3,.split-card h3,.tile h3,.lesson h3{font-size:16px;color:var(--sand);margin:0 0 8px}.content-section p,.split-card p,.tile p,.lesson p{margin:0 0 12px}.content-section p:last-child,.split-card p:last-child,.tile p:last-child,.lesson p:last-child{margin-bottom:0}.section-kicker{font-size:12px;color:var(--bright);margin-bottom:6px}.cover{padding:12px 0 24px}.media-slot{width:100%;background:var(--deep);border:1px solid var(--line);border-radius:14px;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}.tile-slot{height:180px}.feature-slot{height:200px}.app-slot{height:360px}.small-icon-slot{height:72px;width:72px;border-radius:14px}.cover-copy{padding:20px 2px 0}.cover-copy .brandline{color:var(--bright);font-size:13px;margin-bottom:8px}.button-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.button-primary,.button-secondary{height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 18px;border-radius:11px;font-size:14px;font-weight:800;white-space:nowrap}.button-primary{background:linear-gradient(135deg,#3CB371 0%,#2A9D5C 55%,#146B3A 100%);color:#08110C}.button-secondary{background:var(--deep);border:1px solid var(--line2);color:var(--text)}.grid-3,.grid-2,.grid-4{display:grid;gap:16px}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}.tile,.lesson,.split-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:16px}.tile .media-slot{margin-bottom:14px}.number-list,.plain-list,.article-list{list-style:none;padding:0;margin:0;display:grid;gap:10px}.number-list li,.plain-list li,.article-list li{padding:12px 14px;background:var(--panel2);border:1px solid var(--line);border-radius:10px}.number-list b{display:inline-block;min-width:34px;color:var(--bright)}.article-list a{display:block}.article-list span{display:block;color:var(--muted);font-size:13px;margin-top:2px}.status{display:inline-flex;align-items:center;min-height:28px;padding:0 10px;border-radius:999px;background:var(--green);color:#08110C;font-weight:800;font-size:12px}.timeline{position:relative;margin:0 0 0 8px;padding-left:28px}.timeline:before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:1px;background:var(--line2)}.timeline-item{position:relative;margin:0 0 16px;padding:16px 18px;background:var(--panel);border:1px solid var(--line);border-radius:12px}.timeline-item:before{content:"";position:absolute;left:-26px;top:24px;width:12px;height:12px;border-radius:50%;background:var(--bright);box-shadow:0 0 0 5px var(--bg)}.definition-grid{display:grid;grid-template-columns:180px 1fr;gap:0;border:1px solid var(--line);border-radius:12px;overflow:hidden}.definition-grid dt,.definition-grid dd{margin:0;padding:12px 14px;border-bottom:1px solid var(--line)}.definition-grid dt{background:var(--panel2);color:var(--sand);font-weight:800}.definition-grid dd{background:var(--panel)}.definition-grid dt:last-of-type,.definition-grid dd:last-child{border-bottom:0}.notice{padding:14px 16px;border-left:3px solid var(--bright);background:var(--panel2);border-radius:0 10px 10px 0;color:var(--text)}.faq-list{display:grid;gap:12px}.faq-item{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:16px}.faq-item h2{font-size:16px;color:var(--sand);margin:0 0 8px}.faq-item p{margin:0}.site-footer{background:#050706;border-top:1px solid var(--line2);color:var(--text);font-size:13px;padding:30px 0 84px}.footer-grid{display:grid;grid-template-columns:1.2fr repeat(4,1fr);gap:24px}.footer-grid h2{font-size:13px;color:var(--bright);margin:0 0 8px}.footer-grid a{display:block;padding:3px 0;color:var(--text)}.footer-brand p{margin:7px 0 0;color:var(--muted)}.footer-note{border-top:1px solid var(--line);margin-top:24px;padding-top:18px;color:var(--muted)}.footer-note p{margin:0 0 6px}.drawer-overlay{position:fixed;z-index:110;inset:0;background:rgba(0,0,0,.62);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.drawer-overlay.open{opacity:1;visibility:visible;pointer-events:auto}.site-drawer{position:fixed;z-index:120;top:0;bottom:0;left:0;width:min(400px,86vw);background:var(--deep);border-right:1px solid var(--line2);transform:translateX(-103%);visibility:hidden;pointer-events:none;transition:transform .24s ease,visibility .24s;overflow-y:auto;padding:14px 16px 28px}.site-drawer.open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{display:flex;align-items:center;justify-content:space-between;min-height:54px;border-bottom:1px solid var(--line)}.drawer-brand{display:flex;align-items:center;gap:10px;color:var(--title)}.drawer-groups section{padding:14px 0 4px}.drawer-groups h2{font-size:12px;color:var(--bright);margin:0 0 8px}.drawer-groups a{display:block;padding:11px 12px;margin-bottom:7px;background:var(--panel);border:1px solid var(--line);border-radius:10px}.drawer-groups a strong{display:block;color:var(--title);font-size:14px}.drawer-groups a span{display:block;color:var(--muted);font-size:12px;margin-top:2px}.search-layer{position:fixed;z-index:125;top:82px;left:50%;width:min(calc(100% - 32px),760px);transform:translate(-50%,-14px);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.search-layer.open{transform:translate(-50%,0);opacity:1;visibility:visible;pointer-events:auto}.search-card{background:var(--deep);border:1px solid var(--line2);border-radius:0 0 14px 14px;padding:18px;box-shadow:var(--shadow)}.search-head{display:flex;align-items:center;justify-content:space-between}.search-head h2{font-size:18px;color:var(--title);margin:0}.search-card label{display:block;color:var(--muted);margin:10px 0 6px}.search-card input{width:100%;height:44px;border:1px solid var(--line2);border-radius:10px;background:var(--panel);color:var(--title);padding:0 12px;outline:none}.search-links{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.search-links a{display:inline-flex;align-items:center;min-height:44px;padding:0 12px;background:var(--panel2);border:1px solid var(--line);border-radius:9px}.search-empty{color:var(--muted);margin:12px 0 0}.panel-open{overflow:hidden}.mobile-dock{display:none}a:hover,.text-control:hover,.close-control:hover,.drawer-trigger:hover{filter:brightness(1.12)}a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--sand);outline-offset:3px}
@media (max-width:820px){.quick-tabs{display:none}.site-main{padding-top:106px;padding-bottom:72px}.grid-3,.grid-4{grid-template-columns:1fr}.grid-2{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.banner-slot{height:260px}.app-slot{height:320px}.definition-grid{grid-template-columns:1fr}.definition-grid dt{border-bottom:0}.site-footer{padding-bottom:90px}.mobile-dock{position:fixed;z-index:70;left:0;right:0;bottom:0;display:grid;grid-template-columns:repeat(5,1fr);height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:var(--deep);border-top:1px solid var(--line2)}.mobile-dock a{display:flex;align-items:center;justify-content:center;min-width:0;height:48px;font-size:12px;color:var(--text)}.mobile-dock a.active{background:var(--green);color:#08110C;font-weight:800}.search-layer{inset:0;width:auto;transform:none;background:var(--deep);opacity:0}.search-layer.open{transform:none;opacity:1}.search-card{height:100%;border:0;border-radius:0;padding:calc(28px + env(safe-area-inset-top)) 16px 16px;box-shadow:none}.header-inner{grid-template-columns:1fr auto 1fr}.brand-link{min-width:0}.drawer-trigger{min-width:68px}.app-link{min-width:76px;padding:0 10px}.signal-inner{width:100%;padding:0 16px}.page-hero{padding-top:18px}.content-section{padding:18px}.timeline{margin-left:4px}.wrap{width:calc(100% - 32px)}}
@media (max-width:440px){.brand-logo{max-width:110px}.brand-text{font-size:15px}.drawer-trigger{min-width:62px}.app-link{min-width:72px}.footer-grid{grid-template-columns:1fr 1fr;gap:18px}.banner-slot{height:230px}}