*{box-sizing:border-box}
:root{
  --bg:#0C100E;--bg-deep:#080A09;--card:#141A16;--card-2:#1A2420;
  --title:#E8F6EE;--text:#CDE3D6;--muted:#8FB3A0;--assist:#6E8F7E;
  --green:#2A9D5C;--green-bright:#3CB371;--green-deep:#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;
}
html{scroll-behavior:smooth;background:var(--bg-deep)}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}
body.is-locked{overflow:hidden}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{cursor:pointer}
img{max-width:100%;display:block}
.top-line,.main-bar,.sub-tabs{position:fixed;left:0;right:0;z-index:60}
.top-line{top:0;height:22px;background:#050706;border-bottom:1px solid var(--border)}
.main-bar{top:22px;height:60px;background:rgba(8,10,9,.98);border-bottom:1px solid var(--border-strong)}
.sub-tabs{top:82px;height:40px;background:#103522;border-bottom:1px solid var(--border-strong)}
.bar-inner,.sub-tabs-inner{width:min(var(--max),calc(100% - 32px));margin:0 auto}
.bar-inner{height:100%;display:flex;align-items:center;justify-content:space-between}
.top-line .bar-inner{font-size:12px;color:var(--green-bright)}
.top-brand{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.icon-text-button,.drawer-trigger,.close-button{border:1px solid var(--border-strong);background:var(--bg-deep);color:var(--text);border-radius:9px;min-height:40px}
.icon-text-button{position:relative;min-height:20px;height:20px;padding:0 8px;font-size:12px}
.icon-text-button:after{content:"";position:absolute;inset:-12px -8px}
.main-bar-inner{position:relative}
.brand-link,.app-link,.drawer-trigger{min-height:44px;display:flex;align-items:center;justify-content:center}
.brand-link{min-width:96px;justify-content:flex-start}
.brand-logo,.footer-logo{height:28px;width:auto;object-fit:contain}
.brand-fallback{font-size:16px;font-weight:800;color:var(--title)}
.drawer-trigger{position:absolute;left:50%;transform:translateX(-50%);gap:7px;padding:0 15px}
.drawer-mark{font-size:15px;color:var(--green-bright)}
.app-link{padding:0 15px;border-radius:10px;background:linear-gradient(135deg,#3CB371 0%,#2A9D5C 55%,#146B3A 100%);color:#08110C;font-size:14px;font-weight:800}
.sub-tabs-inner{height:100%;display:flex;align-items:center;justify-content:center;gap:10px}
.sub-tabs a{height:30px;min-width:110px;padding:0 18px;display:flex;align-items:center;justify-content:center;border-radius:8px;font-size:13px;color:var(--text)}
.sub-tabs a:hover,.sub-tabs a:focus-visible{background:rgba(42,157,92,.18)}
.sub-tabs a.is-active{background:var(--green);color:#08110C;font-weight:800}
.site-main{padding-top:146px;padding-bottom:48px;min-height:70vh}
.page-shell{width:min(var(--max),calc(100% - 32px));margin:0 auto}
.page-hero{margin-bottom:24px}
.eyebrow{font-size:12px;letter-spacing:.12em;color:var(--green-bright);text-transform:uppercase;margin-bottom:8px}
h1,h2,h3,p{margin-top:0}
h1{font-size:24px;line-height:1.3;color:var(--title);margin-bottom:12px}
h2{font-size:20px;line-height:1.4;color:var(--title);margin-bottom:12px}
h3{font-size:16px;line-height:1.45;color:var(--title);margin-bottom:8px}
p{margin-bottom:14px}
.lead{max-width:850px;color:var(--text)}
.section{margin:28px 0}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:14px}
.section-head p{margin:0;color:var(--muted);max-width:680px}
.card,.article-block,.notice-box,.timeline-item,.lesson-row,.list-link,.qa-card,.status-card{
  background:var(--card);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow)
}
.card,.article-block,.notice-box,.qa-card,.status-card{padding:18px}
.card p,.article-block p,.qa-card p,.status-card p{color:var(--text)}
.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))}
.feature-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}
.media-slot{width:100%;height:180px;background:#070907;border:1px solid var(--border);border-radius:12px;display:flex;align-items:center;justify-content:center;overflow:hidden}
.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}
.media-slot.icon-slot img{width:48px;height:48px}
.media-slot.banner{height:260px}
.media-slot.medium{height:200px}
.media-slot.app-visual{height:340px}
.media-slot.icon-slot{height:72px;width:72px;border-radius:14px}
.button-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.btn{height:44px;min-width:132px;padding:0 18px;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(--bg-deep);border:1px solid var(--border-strong);color:var(--text)}
.btn: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;gap:10px}
.number-item{display:grid;grid-template-columns:46px 1fr;gap:12px;align-items:start;padding:14px;background:var(--card-2);border:1px solid var(--border);border-radius:10px}
.number-item .num{width:38px;height:38px;border-radius:9px;background:var(--green);color:#08110C;display:flex;align-items:center;justify-content:center;font-weight:900}
.number-item p{margin:0;color:var(--muted)}
.lesson-list,.link-list{display:grid;gap:10px}
.lesson-row,.list-link{padding:14px 16px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.lesson-row span,.list-link span{color:var(--muted)}
.list-link:hover{border-color:var(--border-strong);background:var(--card-2)}
.tag{display:inline-flex;align-items:center;min-height:28px;padding:0 10px;border-radius:999px;background:rgba(42,157,92,.16);border:1px solid var(--border);color:var(--green-bright);font-size:12px}
.timeline{position:relative;padding-left:22px;display:grid;gap:14px}
.timeline:before{content:"";position:absolute;left:7px;top:10px;bottom:10px;width:1px;background:var(--border-strong)}
.timeline-item{position:relative;padding:16px}
.timeline-item:before{content:"";position:absolute;left:-21px;top:20px;width:11px;height:11px;border-radius:50%;background:var(--green-bright);box-shadow:0 0 0 4px var(--bg)}
.timeline-item p{margin:0;color:var(--muted)}
.article-stack{display:grid;gap:16px}
.article-block ul{margin:0;padding-left:20px}
.article-block li{margin:6px 0;color:var(--text)}
.definition-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.definition-list div{padding:14px;border-radius:10px;background:var(--card-2);border:1px solid var(--border)}
.definition-list dt{font-weight:800;color:var(--title);margin-bottom:6px}
.definition-list dd{margin:0;color:var(--muted)}
.status-board{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.status-card strong{color:var(--green-bright)}
.qa-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.qa-card h3{margin-bottom:8px}
.small-note{font-size:13px;color:var(--muted)}

.mt-12{margin-top:12px}
.mt-14{margin-top:14px}
.mb-0{margin-bottom:0}
.mb-2{margin-bottom:2px}
.m-0{margin:0}
.app-mini-head{display:flex;gap:12px;align-items:center;margin-bottom:12px}

.site-footer{font-size:13px;background:#050706;border-top:1px solid var(--border-strong);color:var(--text);padding:32px 0 76px}
.footer-inner{width:min(var(--max),calc(100% - 32px));margin:0 auto}
.footer-brand{display:flex;align-items:center;gap:12px}
.footer-brand strong{display:block;color:var(--title)}
.footer-brand span{display:block;font-size:12px;color:var(--muted)}
.footer-brand-block>p{max-width:900px;font-size:13px;color:var(--muted);margin:14px 0 22px}
.footer-links{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;padding:20px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.footer-links h2{font-size:13px;color:var(--green-bright);margin-bottom:8px}
.footer-links a{display:block;font-size:13px;color:var(--text);padding:4px 0}
.footer-links a:hover{color:var(--sand)}
.footer-bottom{padding-top:18px;font-size:13px;color:var(--assist)}
.page-overlay{position:fixed;inset:0;background:rgba(0,0,0,.62);z-index:79;opacity:0;visibility:hidden;pointer-events:none;transition:.22s}
.page-overlay.is-visible{opacity:1;visibility:visible;pointer-events:auto}
.drawer-panel{position:fixed;left:0;top:0;bottom:0;width:400px;max-width:86vw;background:#080A09;z-index:80;transform:translateX(-105%);visibility:hidden;pointer-events:none;transition:transform .24s ease,visibility .24s;border-right:1px solid var(--border-strong)}
.drawer-panel.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}
.drawer-head{height:70px;padding:0 16px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border)}
.drawer-brand{display:flex;align-items:center;gap:10px}
.drawer-brand strong{color:var(--title)}
.close-button{min-width:58px;min-height:44px;padding:0 12px}
.drawer-scroll{height:calc(100% - 70px);overflow-y:auto;padding:12px 14px 24px}
.drawer-group{margin-bottom:18px}
.drawer-group h2{font-size:12px;letter-spacing:.1em;color:var(--green-bright);margin:8px 4px}
.drawer-group a{display:block;padding:11px 10px;border-radius:10px;border:1px solid transparent}
.drawer-group a:hover{background:var(--card);border-color:var(--border)}
.drawer-group strong{display:block;font-size:14px;color:var(--title)}
.drawer-group span{display:block;font-size:12px;color:var(--muted);margin-top:2px}
.search-layer{position:fixed;z-index:85;left:0;right:0;top:82px;display:flex;justify-content:center;visibility:hidden;opacity:0;pointer-events:none;transition:.18s;background:rgba(5,7,6,.92);border-bottom:1px solid var(--border-strong)}
.search-layer.is-open{visibility:visible;opacity:1;pointer-events:auto}
.search-card{width:min(760px,calc(100% - 32px));margin:18px auto;background:var(--bg-deep);border:1px solid var(--border-strong);border-radius:14px;padding:18px;box-shadow:var(--shadow)}
.search-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:14px}
.search-head strong{display:block;color:var(--title)}
.search-head span{display:block;font-size:12px;color:var(--muted)}
.search-label{display:block;font-size:12px;color:var(--muted);margin-bottom:6px}
.search-input{width:100%;height:44px;padding:0 12px;border-radius:10px;border:1px solid var(--border-strong);background:var(--card);color:var(--title)}
.search-presets{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.search-presets a{min-height:40px;padding:0 14px;border-radius:9px;display:inline-flex;align-items:center;background:var(--card);border:1px solid var(--border);color:var(--text)}
.search-empty{margin:12px 0 0;color:var(--muted);font-size:13px}
.mobile-bottom{display:none}
.callout{padding:16px 18px;border-left:3px solid var(--green-bright);background:var(--card-2);border-radius:0 10px 10px 0;color:var(--text)}
.pill-row{display:flex;flex-wrap:wrap;gap:8px}
.data-table{width:100%;border-collapse:collapse;background:var(--card);border:1px solid var(--border);border-radius:12px;overflow:hidden}
.data-table th,.data-table td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--border);vertical-align:top}
.data-table th{color:var(--title);background:var(--card-2)}
.data-table td{color:var(--text)}
.data-table tr:last-child td{border-bottom:0}

@media (max-width:900px){
  .card-grid,.card-grid.four{grid-template-columns:repeat(2,minmax(0,1fr))}
  .feature-grid{grid-template-columns:1fr}
  .status-board{grid-template-columns:1fr}
  .footer-links{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:700px){
  .sub-tabs{display:none}
  .top-line{height:22px}
  .main-bar{top:22px;height:60px}
  .site-main{padding-top:106px;padding-bottom:72px}
  .bar-inner{width:calc(100% - 32px)}
  .brand-link{min-width:72px}
  .brand-logo{height:28px;max-width:92px}
  .drawer-trigger{padding:0 11px;min-width:76px}
  .app-link{padding:0 10px;min-width:74px}
  .card-grid,.card-grid.two,.card-grid.four,.qa-grid,.definition-list{grid-template-columns:1fr}
  .media-slot.banner{height:260px}
  .media-slot.app-visual{height:320px}
  .search-layer{inset:0;background:#080A09;align-items:flex-start}
  .search-card{width:100%;height:100%;margin:0;border:0;border-radius:0;padding:calc(22px + env(safe-area-inset-top)) 16px 24px}
  .mobile-bottom{position:fixed;z-index:70;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:#050706;border-top:1px solid var(--border-strong)}
  .mobile-bottom a{min-height:48px;display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--text)}
  .mobile-bottom a.is-active{background:var(--green);color:#08110C;font-weight:800}
  .site-footer{padding-bottom:calc(76px + env(safe-area-inset-bottom))}
  .section-head{align-items:flex-start;flex-direction:column}
}
@media (max-width:420px){
  .top-brand{max-width:230px}
  .footer-links{grid-template-columns:1fr 1fr}
}