:root{
  --bg:#0C100E;--bg-deep:#080A09;--surface:#141A16;--surface-2:#1A2420;
  --title:#E8F6EE;--text:#CDE3D6;--muted:#8FB3A0;--soft:#6E8F7E;
  --green:#2A9D5C;--green-bright:#3CB371;--green-dark:#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);
  --max:1120px;--radius:12px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg)}
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%}
.skip-link{position:fixed;left:12px;top:-80px;z-index:200;background:var(--sand);color:#08110C;padding:8px 12px;border-radius:8px}
.skip-link:focus{top:8px}
.site-top{position:fixed;inset:0 0 auto 0;z-index:100;background:var(--bg-deep)}
.boundary-line{height:22px;background:#050706;color:var(--green-bright);font-size:12px;border-bottom:1px solid var(--border)}
.boundary-inner{height:100%;max-width:var(--max);margin:auto;padding:0 16px;display:flex;align-items:center;justify-content:space-between}
.search-open{border:0;background:transparent;color:var(--green-bright);min-width:44px;height:22px;padding:0 4px}
.dimension-bar{height:60px;border-bottom:1px solid var(--border-strong);background:var(--bg-deep);display:grid;grid-template-columns:1fr auto 1fr;align-items:center;padding:0 max(16px,calc((100vw - var(--max))/2));gap:12px}
.brand-home{justify-self:start;display:flex;align-items:center;min-height:44px}
.brand-logo,.drawer-logo,.footer-logo{height:28px;width:auto;object-fit:contain;object-position:center}
.brand-fallback{font-size:16px;font-weight:700;color:var(--title)}
.drawer-open{justify-self:center;height:44px;min-width:76px;border:1px solid var(--border-strong);border-radius:10px;background:#0D1411;color:var(--text);font-size:14px}
.app-link-top{justify-self:end;display:flex;align-items:center;justify-content:center;min-height:44px;padding:0 14px;border-radius:10px;background:linear-gradient(135deg,#3CB371 0%,#2A9D5C 55%,#146B3A 100%);color:#08110C;font-weight:700;white-space:nowrap}
.layer-tabs{height:40px;background:var(--green-dark);border-bottom:1px solid var(--border-strong)}
.layer-tabs-inner{height:100%;display:flex;justify-content:center;align-items:center;gap:8px;padding:0 16px}
.layer-tabs a{height:28px;display:flex;align-items:center;padding:0 14px;border-radius:8px;color:var(--sand);font-size:13px}
.layer-tabs a.active{background:var(--green);color:#08110C;font-weight:700}
.site-main{padding-top:146px;min-height:60vh}
.page-shell{max-width:var(--max);margin:0 auto;padding:0 16px 56px}
.page-hero{padding:28px 0 22px;border-bottom:1px solid var(--border);margin-bottom:24px}
.kicker{margin:0 0 8px;color:var(--green-bright);font-size:12px;letter-spacing:.08em}
h1{margin:0;color:var(--title);font-size:24px;line-height:1.3}
h2{font-size:20px;line-height:1.4;margin:0 0 12px;color:var(--title)}
h3{font-size:16px;line-height:1.45;margin:0 0 8px;color:var(--title)}
p{margin:0 0 14px}.lead{margin-top:12px;max-width:820px;color:var(--text)}
.section{margin:28px 0}.section-head{display:flex;justify-content:space-between;gap:18px;align-items:flex-end;margin-bottom:14px}.section-head p{margin:0;color:var(--muted);font-size:13px}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.card-grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.card-grid.four{grid-template-columns:repeat(4,minmax(0,1fr))}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow)}
.card p:last-child{margin-bottom:0}.card a.text-link{display:inline-flex;min-height:44px;align-items:center;color:var(--green-bright);font-weight:700}
.media-slot,.cover-slot,.app-visual{background:var(--bg-deep);border:1px solid var(--border);border-radius:12px;display:flex;align-items:center;justify-content:center;overflow:hidden}
.media-slot{height:180px;margin-bottom:14px}.media-slot.wide{height:200px}.cover-slot{height:260px}.app-visual{height:360px}
.media-slot img,.cover-slot img,.app-visual img{width:100%;height:100%;object-fit:contain;object-position:center}
.cover-copy{text-align:center;max-width:820px;margin:20px auto 0}.cover-copy .brand-line{font-size:13px;color:var(--muted);margin-bottom:6px}.cover-copy h1{font-size:24px}.cover-copy .slogan{font-size:20px;color:var(--sand);margin:8px 0 10px}
.actions{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:16px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:0 16px;border-radius:10px;font-size:14px;font-weight:700;white-space:nowrap}.btn-primary{background:linear-gradient(135deg,#3CB371 0%,#2A9D5C 55%,#146B3A 100%);color:#08110C}.btn-secondary{background:#0D1411;border:1px solid var(--border-strong);color:var(--text)}
.btn:hover,.drawer-open:hover,.app-link-top:hover,.layer-tabs a:hover,.mobile-bottom a:hover{transform:translateY(-1px)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--sand);outline-offset:2px}
.number-list{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:14px 0 0}.number-list article{background:var(--surface-2);border:1px solid var(--border);border-radius:10px;padding:12px}.number-list b{display:block;color:var(--green-bright);font-size:12px}.number-list span{color:var(--title)}
.lesson-list,.article-list,.plain-list{display:grid;gap:10px}.lesson-list article,.article-list article,.plain-list li{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:14px}.plain-list{list-style:none;padding:0;margin:0}.lesson-list p,.article-list p{margin:6px 0 0;color:var(--muted)}
.split-block{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(280px,.95fr);gap:18px;align-items:start}.split-block.reverse{grid-template-columns:minmax(280px,.95fr) minmax(0,1.05fr)}
.timeline{position:relative;margin:0;padding:0 0 0 22px;list-style:none}.timeline:before{content:"";position:absolute;left:6px;top:6px;bottom:6px;width:2px;background:var(--border-strong)}.timeline li{position:relative;background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:14px;margin:0 0 12px}.timeline li:before{content:"";position:absolute;left:-21px;top:20px;width:10px;height:10px;border-radius:50%;background:var(--green-bright);box-shadow:0 0 0 4px var(--bg)}.status{display:inline-flex;align-items:center;min-height:28px;padding:0 10px;border-radius:999px;background:var(--green);color:#08110C;font-size:12px;font-weight:700;margin-bottom:6px}
.notice{background:var(--surface-2);border-left:3px solid var(--green-bright);padding:14px 16px;border-radius:8px;margin:18px 0;color:var(--text)}
.faq-list{display:grid;gap:12px}.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:16px}.faq-item h2,.faq-item h3{margin-bottom:8px}.faq-item p{margin:0;color:var(--text)}
.site-footer{background:#050706;border-top:1px solid var(--border-strong);color:var(--text)}.footer-inner{max-width:var(--max);margin:auto;padding:28px 16px calc(28px + env(safe-area-inset-bottom))}.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}.footer-brand div{display:flex;flex-direction:column}.footer-brand span{font-size:12px;color:var(--muted)}.footer-links{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}.footer-links h2{font-size:13px;margin-bottom:8px;color:var(--green-bright)}.footer-links a{display:block;font-size:13px;color:var(--text);min-height:32px;padding:5px 0}.footer-note,.copyright{font-size:13px;color:var(--muted);margin-top:18px}.copyright{margin-bottom:0}
.drawer,.search-layer,.page-overlay{visibility:hidden;pointer-events:none}.page-overlay{position:fixed;inset:0;z-index:120;background:rgba(0,0,0,.58);opacity:0;transition:.2s}.page-overlay.show{visibility:visible;pointer-events:auto;opacity:1}.drawer{position:fixed;inset:0;z-index:140}.drawer.open{visibility:visible;pointer-events:auto}.drawer-panel{height:100%;width:400px;max-width:86vw;background:var(--bg-deep);border-right:1px solid var(--border-strong);box-shadow:var(--shadow);transform:translateX(-102%);transition:transform .22s ease;overflow-y:auto;padding-bottom:30px}.drawer.open .drawer-panel{transform:translateX(0)}.drawer-head{height:70px;padding:0 16px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}.drawer-brand{display:flex;align-items:center;gap:10px}.drawer-close,.search-close{min-height:44px;padding:0 12px;border-radius:9px;border:1px solid var(--border-strong);background:#0D1411;color:var(--text)}.drawer-groups{padding:14px}.drawer-groups section{margin-bottom:20px}.drawer-groups h2{font-size:13px;color:var(--green-bright);margin:0 0 8px}.drawer-groups a{display:block;padding:11px 12px;border-radius:10px;border:1px solid transparent;min-height:62px}.drawer-groups a:hover{background:var(--surface);border-color:var(--border)}.drawer-groups strong{display:block;color:var(--title);font-size:14px}.drawer-groups span{display:block;color:var(--muted);font-size:12px;line-height:1.55;margin-top:2px}
.search-layer{position:fixed;z-index:150;left:50%;top:92px;width:min(720px,calc(100% - 32px));transform:translateX(-50%)}.search-layer.open{visibility:visible;pointer-events:auto}.search-card{background:var(--bg-deep);border:1px solid var(--border-strong);border-radius:14px;box-shadow:var(--shadow);padding:18px}.search-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.search-head strong{color:var(--title)}.search-card label{display:block;color:var(--muted);font-size:13px;margin-bottom:6px}.search-card input{width:100%;height:44px;border-radius:10px;border:1px solid var(--border-strong);background:var(--surface);color:var(--text);padding:0 12px}.search-presets{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:12px}.search-presets a{min-height:44px;display:flex;align-items:center;justify-content:center;border:1px solid var(--border);border-radius:10px;background:var(--surface);color:var(--text)}.search-empty{margin:12px 0 0;color:var(--muted);font-size:13px}
.mobile-bottom{display:none}
.index-faq .faq-item h3{font-size:16px}.index-about{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:18px}
.meta-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.meta-chip{display:inline-flex;align-items:center;min-height:30px;padding:0 10px;border-radius:999px;background:var(--surface-2);border:1px solid var(--border);font-size:12px;color:var(--muted)}
.table-like{display:grid;gap:10px}.row-card{display:grid;grid-template-columns:130px 1fr;gap:12px;padding:14px;background:var(--surface);border:1px solid var(--border);border-radius:10px}.row-card strong{color:var(--green-bright)}
@media (max-width:860px){.card-grid.four{grid-template-columns:repeat(2,minmax(0,1fr))}.split-block,.split-block.reverse{grid-template-columns:1fr}.footer-links{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:700px){
  body{font-size:15px;padding-bottom:calc(48px + env(safe-area-inset-bottom))}.layer-tabs{display:none}.dimension-bar{padding:0 16px}.site-main{padding-top:106px}.page-shell{padding:0 16px 40px}.page-hero{padding-top:22px}.cover-slot{height:260px}.card-grid,.card-grid.two,.card-grid.four{grid-template-columns:1fr}.number-list{grid-template-columns:repeat(2,minmax(0,1fr))}.media-slot{height:180px}.media-slot.wide{height:200px}.app-visual{height:340px}.search-layer{inset:0;left:0;top:0;width:100%;height:100%;transform:none;background:var(--bg-deep)}.search-card{height:100%;border:0;border-radius:0;padding:18px 16px calc(68px + env(safe-area-inset-bottom));overflow:auto}.search-presets{grid-template-columns:1fr 1fr}.mobile-bottom{position:fixed;z-index:110;display:grid;grid-template-columns:repeat(5,1fr);left:0;right:0;bottom:0;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);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(--text);min-width:0}.mobile-bottom a.active{background:var(--green);color:#08110C;font-weight:700}.drawer{z-index:140}.page-overlay{z-index:120}.row-card{grid-template-columns:1fr;gap:4px}
}
@media (max-width:420px){.dimension-bar{grid-template-columns:minmax(68px,1fr) auto minmax(68px,1fr);gap:6px}.app-link-top{padding:0 10px;font-size:13px}.drawer-open{min-width:64px}.brand-logo{max-width:96px}.search-presets{grid-template-columns:1fr}.cover-copy .slogan{font-size:18px}}

.actions.left{justify-content:flex-start}.spaced-after-list{margin-top:14px}.app-icon{width:48px;height:48px;object-fit:contain;object-position:center}