: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;--border:rgba(42,157,92,.18);--border-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;overflow-x:hidden}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.7 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;overflow-x:hidden}body.is-locked{overflow:hidden}a{color:inherit;text-decoration:none}button{font:inherit}img{display:block;max-width:100%}.shell{width:min(var(--max),calc(100% - 32px));margin:0 auto}.skip-link{position:fixed;left:16px;top:-80px;z-index:200;background:var(--sand);color:var(--deep);padding:8px 12px;border-radius:8px}.skip-link:focus{top:12px}
.top-line{position:fixed;inset:0 0 auto 0;height:22px;background:#050706;color:var(--bright);z-index:90;border-bottom:1px solid var(--border)}.top-line-inner{height:22px;display:flex;align-items:center;justify-content:space-between;font-size:12px}.text-button,.icon-button{appearance:none;border:0;background:transparent;color:var(--text);cursor:pointer;min-height:44px;padding:0 8px}.top-line .text-button{color:var(--bright);min-height:22px}.dimension-bar{position:fixed;top:22px;left:0;right:0;height:60px;background:var(--deep);border-bottom:1px solid var(--border);z-index:88}.dimension-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}.brand-logo,.drawer-logo,.footer-logo{height:28px;width:auto;object-fit:contain}.logo-text{font-size:16px;font-weight:800;color:var(--title);letter-spacing:.04em}.dimension-button,.app-entry{min-height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;font-size:14px}.dimension-button{justify-self:center;min-width:92px;background:var(--panel2);color:var(--text);border:1px solid var(--border-strong);cursor:pointer}.app-entry{justify-self:end;padding:0 14px;background:linear-gradient(135deg,#3CB371 0%,#2A9D5C 55%,#146B3A 100%);color:#08110C;font-weight:800}.layer-tabs{position:fixed;top:82px;left:0;right:0;height:40px;background:#0F2A1C;border-bottom:1px solid var(--border-strong);z-index:86}.tabs-inner{height:40px;display:flex;align-items:center;justify-content:center;gap:10px}.tab-link{height:30px;display:inline-flex;align-items:center;padding:0 14px;border-radius:8px;color:var(--text);font-size:13px}.tab-link.is-active{background:var(--green);color:#08110C;font-weight:800}.site-main{padding-top:146px;min-height:60vh}.page-wrap{padding:0 0 64px}.page-hero{margin-bottom:24px}.eyebrow{font-size:12px;color:var(--bright);letter-spacing:.12em;text-transform:uppercase}.page-hero h1{margin:6px 0 10px;font-size:24px;line-height:1.3;color:var(--title)}.page-hero p{max-width:780px;margin:0;color:var(--muted)}.section-title{margin:0 0 14px;font-size:20px;line-height:1.4;color:var(--title)}.content-card h3,.feature-card h3,.faq-card h3{font-size:16px;color:var(--title);margin:0 0 8px}.content-card p,.feature-card p,.faq-card p{margin:0;color:var(--text)}.content-card,.feature-card,.faq-card,.timeline-item,.lesson-item,.index-card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.content-card{padding:20px}.stack{display:grid;gap:16px}.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.section-block{margin:30px 0}.feature-card{overflow:hidden}.feature-card .body{padding:18px}.media-slot{width:100%;background:var(--deep);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:center;overflow:hidden}.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}.media-banner{height:260px}.media-180{height:180px}.media-200{height:200px}.media-app{height:min(360px,64vw)}.hero-brand{padding-top:18px}.hero-brand h1{margin:4px 0 8px;font-size:24px;color:var(--title);line-height:1.3}.hero-brand .lead{max-width:860px;color:var(--text);margin:0}.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}.btn{min-height:42px;padding:0 16px;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}.btn-secondary{background:var(--deep);border:1px solid var(--border-strong);color:var(--text)}.number-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:14px 0}.number-chip{padding:12px;border-radius:10px;background:var(--panel2);border:1px solid var(--border);color:var(--sand)}.number-chip strong{display:block;color:var(--bright);font-size:13px}.lesson-list,.sound-list,.article-list{display:grid;gap:10px}.lesson-item{padding:14px 16px}.lesson-item strong{display:block;color:var(--title);margin-bottom:2px}.lesson-item span{color:var(--muted)}.timeline{position:relative;display:grid;gap:14px}.timeline:before{content:"";position:absolute;left:12px;top:16px;bottom:16px;width:1px;background:var(--border-strong)}.timeline-item{position:relative;padding:16px 16px 16px 42px}.timeline-item:before{content:"";position:absolute;left:7px;top:22px;width:11px;height:11px;border-radius:50%;background:var(--green);box-shadow:0 0 0 4px rgba(42,157,92,.12)}.status{display:inline-flex;min-height:26px;align-items:center;padding:0 8px;border-radius:999px;background:var(--panel2);border:1px solid var(--border-strong);color:var(--bright);font-size:12px}.meta-row{display:flex;flex-wrap:wrap;gap:8px 12px;color:var(--soft);font-size:13px}.quote-note{border-left:3px solid var(--green);padding:14px 16px;background:var(--panel2);border-radius:0 10px 10px 0;color:var(--sand)}.index-card{padding:18px}.index-card a{color:var(--bright);font-weight:800}.index-card p{margin:6px 0 0;color:var(--muted)}
.site-footer{background:#050706;border-top:1px solid var(--border-strong);padding:34px 0 calc(74px + env(safe-area-inset-bottom))}.footer-grid{display:grid;grid-template-columns:2fr repeat(4,1fr);gap:22px}.site-footer h2{font-size:13px;color:var(--sand);margin:0 0 8px}.site-footer section>a{display:block;padding:3px 0;color:var(--text);font-size:13px}.footer-brand p{font-size:13px;color:var(--text);margin:12px 0 0;max-width:560px}.footer-logo-row{display:flex;align-items:center;gap:10px}.app-icon-row{margin-bottom:12px}.app-icon-row img{width:48px;height:48px;object-fit:contain;object-position:center}.footer-logo-row strong{color:var(--title)}.footer-logo-row span{font-size:12px;color:var(--bright)}.footer-bottom{margin-top:28px;padding-top:16px;border-top:1px solid var(--border);font-size:13px;color:var(--text)}
.page-overlay{position:fixed;inset:0;background:rgba(0,0,0,.58);z-index:110;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.page-overlay.is-active{opacity:1;visibility:visible;pointer-events:auto}.dimension-drawer{position:fixed;inset:0 auto 0 0;width:min(400px,86vw);background:var(--deep);z-index:120;transform:translateX(-102%);visibility:hidden;pointer-events:none;transition:transform .24s ease,visibility .24s;padding:18px;overflow-y:auto;border-right:1px solid var(--border-strong)}.dimension-drawer.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--border)}.drawer-brand{display:flex;align-items:center;gap:10px}.drawer-brand div{display:grid}.drawer-brand span{font-size:12px;color:var(--bright)}.drawer-groups{display:grid;gap:20px;padding:18px 0}.drawer-groups h2{font-size:12px;color:var(--sand);letter-spacing:.12em;margin:0 0 8px}.drawer-groups a{display:grid;gap:2px;padding:10px 0;border-bottom:1px solid var(--border)}.drawer-groups a strong{font-size:14px;color:var(--title)}.drawer-groups a span{font-size:12px;color:var(--muted)}.search-panel{position:fixed;top:82px;left:0;right:0;z-index:118;visibility:hidden;pointer-events:none;opacity:0;transition:.2s}.search-panel.is-open{visibility:visible;pointer-events:auto;opacity:1}.search-card{width:min(760px,calc(100% - 32px));margin:0 auto;background:var(--deep);border:1px solid var(--border-strong);border-radius:0 0 14px 14px;padding:18px;box-shadow:var(--shadow)}.search-head{display:flex;justify-content:space-between;gap:18px;align-items:flex-start}.search-head strong{font-size:16px;color:var(--title)}.search-head p{margin:2px 0 0;color:var(--muted)}.search-presets{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}.search-presets a{min-height:44px;display:inline-flex;align-items:center;padding:0 12px;border-radius:10px;background:var(--panel2);border:1px solid var(--border);color:var(--text)}
.mobile-bottom{display:none}.faq-list{display:grid;gap:14px}.faq-card{padding:18px}.two-col-text{columns:2;column-gap:28px}.two-col-text p{break-inside:avoid;margin:0 0 14px}.link-list{display:grid;gap:10px}.link-list a{min-height:44px;display:flex;align-items:center;justify-content:space-between;padding:10px 14px;background:var(--panel);border:1px solid var(--border);border-radius:10px}.link-list a span{color:var(--muted);font-size:13px}
a:hover{color:var(--sand)}.btn-primary:hover,.app-entry:hover,.tab-link.is-active:hover{color:#08110C;filter:brightness(1.05)}button:focus-visible,a:focus-visible{outline:2px solid var(--sand);outline-offset:3px}
@media (max-width:860px){.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.two-col-text{columns:1}}
@media (max-width:720px){.layer-tabs{display:none}.site-main{padding-top:106px;padding-bottom:58px}.dimension-inner{grid-template-columns:minmax(0,1fr) auto auto;gap:6px}.brand-link{min-width:0}.brand-logo{max-width:112px}.dimension-button{min-width:76px}.app-entry{padding:0 10px}.grid-3,.grid-2{grid-template-columns:1fr}.number-row{grid-template-columns:repeat(2,minmax(0,1fr))}.media-banner{height:260px}.footer-grid{grid-template-columns:1fr 1fr}.mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:100;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(--border-strong)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--muted)}.mobile-bottom a.is-active{background:var(--green);color:#08110C;font-weight:800}.search-panel{top:0;bottom:0;background:var(--deep);padding-top:22px}.search-card{width:100%;height:100%;border:0;border-radius:0;box-shadow:none;overflow-y:auto}.search-presets{display:grid;grid-template-columns:1fr 1fr}.site-footer{padding-bottom:calc(76px + env(safe-area-inset-bottom))}}
@media (max-width:480px){.shell{width:min(var(--max),calc(100% - 32px))}.footer-grid{grid-template-columns:1fr}.grid-4{grid-template-columns:1fr}.search-presets{grid-template-columns:1fr}.media-180{height:170px}.page-hero h1,.hero-brand h1{font-size:24px}.section-title{font-size:20px}}