:root{
  --bg:#0C100E;
  --bg-deep:#080A09;
  --panel:#141A16;
  --panel-2:#1A2420;
  --title:#E8F6EE;
  --text:#CDE3D6;
  --muted:#8FB3A0;
  --soft:#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);
  --radius:12px;
  --shell:1120px;
  --edge-h:22px;
  --mast-h:60px;
  --tabs-h:40px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:hidden}
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{color:inherit}
img{display:block;max-width:100%}
.shell{width:min(calc(100% - 32px),var(--shell));margin-inline:auto}
.skip-link{position:fixed;left:16px;top:-100px;z-index:1000;background:var(--sand);color:var(--bg-deep);padding:9px 14px;border-radius:8px;font-weight:700}
.skip-link:focus{top:12px}
.edge-bar{position:fixed;top:0;left:0;right:0;height:var(--edge-h);z-index:60;background:#050706;color:var(--green-bright);border-bottom:1px solid rgba(60,179,113,.18);font-size:12px}
.edge-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:12px}
.edge-search{height:22px;min-width:44px;border:0;background:transparent;color:var(--green-bright);cursor:pointer;padding:0 4px}
.masthead{position:fixed;top:var(--edge-h);left:0;right:0;height:var(--mast-h);z-index:58;background:rgba(8,10,9,.97);border-bottom:1px solid var(--border)}
.masthead-inner{height:100%;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:14px}
.brand-link{justify-self:start;min-width:44px;height:44px;display:flex;align-items:center}
.brand-logo,.footer-logo{height:28px;width:auto;max-width:180px;object-fit:contain;object-position:center}
.brand-text{font-size:16px;color:var(--title);font-weight:800;letter-spacing:.06em}
.drawer-trigger,.app-link,.icon-button{min-height:44px;border-radius:10px;border:1px solid var(--border-strong);background:var(--bg-deep);color:var(--text);display:inline-flex;align-items:center;justify-content:center;padding:0 16px;font-size:14px;cursor:pointer;transition:transform .18s ease,border-color .18s ease,background .18s ease,color .18s ease}
.drawer-trigger{justify-self:center}
.app-link{justify-self:end;background:linear-gradient(135deg,#3CB371 0%,#2A9D5C 55%,#146B3A 100%);color:#08110C;border-color:transparent;font-weight:800;white-space:nowrap}
.section-tabs{position:fixed;top:calc(var(--edge-h) + var(--mast-h));left:0;right:0;height:var(--tabs-h);z-index:56;background:var(--green-deep);border-bottom:1px solid var(--border-strong)}
.tabs-inner{height:100%;display:flex;align-items:center;justify-content:center;gap:8px}
.tabs-inner a{height:30px;min-width:92px;display:flex;align-items:center;justify-content:center;border-radius:8px;color:var(--sand);font-size:13px;padding:0 14px;transition:background .18s ease,color .18s ease}
.tabs-inner a.is-current{background:var(--green);color:#08110C;font-weight:800}
.site-main{padding-top:calc(var(--edge-h) + var(--mast-h) + var(--tabs-h) + 28px);padding-bottom:72px;min-height:70vh}
.hero,.page-hero{padding:0 0 28px}
.hero-media,.media-slot,.media-slot-tall,.media-slot-compact{width:100%;background:var(--bg-deep);border:1px solid var(--border);border-radius:14px;overflow:hidden;display:flex;align-items:center;justify-content:center}
.hero-media{height:260px}
.media-slot{height:200px}
.media-slot-compact{height:180px}
.media-slot-tall{height:360px}
.hero-media img,.media-slot img,.media-slot-compact img,.media-slot-tall img{width:100%;height:100%;object-fit:contain;object-position:center}
.hero-copy{padding:24px 0 0;max-width:840px}
.eyebrow{display:inline-flex;align-items:center;min-height:26px;border:1px solid var(--border-strong);border-radius:999px;padding:0 10px;font-size:12px;color:var(--green-bright);letter-spacing:.08em;text-transform:uppercase}
h1,h2,h3,p{margin-top:0}
h1{font-size:24px;line-height:1.3;color:var(--title);margin:12px 0 12px;letter-spacing:.02em}
h2{font-size:20px;line-height:1.4;color:var(--title);margin-bottom:14px}
h3{font-size:16px;line-height:1.45;color:var(--sand);margin-bottom:10px}
p{margin-bottom:14px}
.lead{font-size:16px;color:var(--text);max-width:900px}
.muted{color:var(--muted)}
.soft{color:var(--soft)}
.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.button{height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;padding:0 18px;font-size:14px;font-weight:800;white-space:nowrap;border:1px solid transparent;transition:transform .18s ease,border-color .18s ease,background .18s ease}
.button-primary{background:linear-gradient(135deg,#3CB371 0%,#2A9D5C 55%,#146B3A 100%);color:#08110C}
.button-secondary{background:var(--bg-deep);border-color:var(--border-strong);color:var(--text)}
.button:hover,.drawer-trigger:hover,.app-link:hover,.icon-button:hover{transform:translateY(-1px)}
a:focus-visible,button:focus-visible{outline:2px solid var(--sand);outline-offset:3px}
.section{padding:34px 0;border-top:1px solid var(--border)}
.section:first-child{border-top:0}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:18px}
.section-head p{max-width:680px;margin-bottom:0;color:var(--muted)}
.grid-2,.grid-3,.grid-4{display:grid;gap:16px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}
.card .media-slot,.card .media-slot-compact{margin:-18px -18px 16px;width:calc(100% + 36px);border-radius:12px 12px 0 0;border-top:0;border-left:0;border-right:0}
.card p:last-child{margin-bottom:0}
.card-link{display:block;transition:border-color .18s ease,transform .18s ease}
.card-link:hover{border-color:var(--border-strong);transform:translateY(-2px)}
.numbered-list,.plain-list,.detail-list,.lesson-list,.timeline,.faq-list{list-style:none;padding:0;margin:0}
.numbered-list{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:18px 0}
.numbered-list li{background:var(--panel-2);border:1px solid var(--border);border-radius:10px;padding:14px;color:var(--text)}
.numbered-list b{display:block;color:var(--green-bright);font-size:12px;margin-bottom:6px;letter-spacing:.08em}
.split{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(280px,.9fr);gap:22px;align-items:start}
.stack{display:grid;gap:16px}
.info-band{background:linear-gradient(180deg,rgba(42,157,92,.08),rgba(42,157,92,.02));border:1px solid var(--border-strong);border-radius:14px;padding:20px}
.info-band p:last-child{margin-bottom:0}
.lesson-list{display:grid;gap:10px}
.lesson-list li{display:grid;grid-template-columns:38px 1fr;gap:12px;align-items:start;background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:14px}
.lesson-list .idx{width:38px;height:38px;border-radius:10px;background:var(--green);color:#08110C;display:flex;align-items:center;justify-content:center;font-weight:900}
.timeline{position:relative;padding-left:24px;display:grid;gap:16px}
.timeline:before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:1px;background:var(--border-strong)}
.timeline li{position:relative;background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:16px 18px}
.timeline li:before{content:"";position:absolute;left:-22px;top:23px;width:11px;height:11px;border-radius:50%;background:var(--green-bright);box-shadow:0 0 0 5px var(--bg)}
.status{display:inline-flex;min-height:26px;align-items:center;border-radius:999px;padding:0 10px;background:rgba(60,179,113,.13);border:1px solid var(--border);color:var(--green-bright);font-size:12px;margin-bottom:8px}
.prose{max-width:900px}
.prose h2{margin-top:30px}
.prose h3{margin-top:22px}
.prose ul{padding-left:1.25em}
.prose li{margin-bottom:8px}
.meta-strip{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 20px}
.meta-strip span{border:1px solid var(--border);background:var(--panel);border-radius:999px;padding:5px 10px;color:var(--muted);font-size:12px}
.faq-list{display:grid;gap:14px}
.faq-item{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:18px}
.faq-item h2{font-size:16px;margin-bottom:8px;color:var(--sand)}
.faq-item p{margin:0;color:var(--text)}
.notice{border-left:3px solid var(--green);background:var(--panel-2);padding:14px 16px;border-radius:0 10px 10px 0;color:var(--text)}
.page-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.page-links a{min-height:44px;display:inline-flex;align-items:center;padding:0 14px;border:1px solid var(--border);border-radius:10px;background:var(--panel);color:var(--text)}
.page-links a:hover{border-color:var(--border-strong)}
.site-footer{background:#050706;border-top:1px solid var(--border);color:var(--text);padding:34px 0 calc(34px + env(safe-area-inset-bottom))}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:24px}
.footer-brand div{display:flex;flex-direction:column;line-height:1.25}
.footer-brand strong{font-size:16px;color:var(--title)}
.footer-brand span{font-size:12px;color:var(--muted);letter-spacing:.12em}
.footer-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;padding-bottom:24px}
.footer-grid h2{font-size:13px;color:var(--green-bright);margin-bottom:8px}
.footer-grid a{display:flex;align-items:center;min-height:44px;color:var(--text);font-size:13px}
.footer-grid a:hover{color:var(--sand)}
.footer-note{border-top:1px solid var(--border);padding-top:18px;font-size:13px;color:var(--muted)}
.footer-note p:last-child{margin-bottom:0}
.drawer{position:fixed;z-index:90;top:0;bottom:0;left:0;width:min(400px,86vw);background:var(--bg-deep);border-right:1px solid var(--border-strong);box-shadow:var(--shadow);transform:translateX(-102%);visibility:hidden;pointer-events:none;transition:transform .22s ease,visibility .22s ease;padding:18px;overflow-y:auto}
.drawer-open .drawer{transform:translateX(0);visibility:visible;pointer-events:auto}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;position:sticky;top:-18px;background:var(--bg-deep);padding:18px 0 14px;z-index:2;border-bottom:1px solid var(--border)}
.drawer-brand{display:flex;align-items:center;gap:10px;font-weight:900;color:var(--title)}
.drawer-brand img{height:28px;width:auto;object-fit:contain}
.drawer-groups{display:grid;gap:20px;padding:18px 0}
.drawer-groups section{display:grid;gap:8px}
.drawer-groups h2{font-size:13px;color:var(--green-bright);margin:0 0 2px}
.drawer-groups a{display:grid;gap:2px;background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:11px 12px}
.drawer-groups a strong{font-size:14px;color:var(--title)}
.drawer-groups a span{font-size:12px;color:var(--muted);line-height:1.5}
.drawer-groups a:hover{border-color:var(--border-strong)}
.page-overlay{position:fixed;inset:0;z-index:80;background:rgba(0,0,0,.58);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s ease,visibility .2s ease}
.page-overlay.is-active{opacity:1;visibility:visible;pointer-events:auto}
.search-layer{position:fixed;z-index:88;top:calc(var(--edge-h) + var(--mast-h));left:0;right:0;visibility:hidden;pointer-events:none;transform:translateY(-12px);opacity:0;transition:transform .2s ease,opacity .2s ease,visibility .2s ease}
.search-open .search-layer{visibility:visible;pointer-events:auto;transform:translateY(0);opacity:1}
.search-card{width:min(calc(100% - 32px),760px);margin:12px auto 0;background:var(--bg-deep);border:1px solid var(--border-strong);border-radius:14px;box-shadow:var(--shadow);padding:20px}
.search-head{display:flex;justify-content:space-between;align-items:start;gap:18px}
.search-head h2{margin:8px 0 0}
.search-card p{color:var(--muted)}
.search-presets{display:flex;flex-wrap:wrap;gap:10px}
.search-presets a{min-height:44px;display:inline-flex;align-items:center;padding:0 14px;border:1px solid var(--border);border-radius:10px;background:var(--panel);color:var(--text)}
.search-presets a:hover{border-color:var(--border-strong)}
.mobile-dock{display:none}
@media (max-width:860px){
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-3{grid-template-columns:1fr}
  .split{grid-template-columns:1fr}
  .numbered-list{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:640px){
  :root{--tabs-h:0px}
  .section-tabs{display:none}
  .shell{width:min(calc(100% - 32px),var(--shell))}
  .masthead-inner{grid-template-columns:1fr auto 1fr;gap:8px}
  .brand-logo{height:26px;max-width:118px}
  .drawer-trigger,.app-link{padding:0 10px;min-width:52px}
  .site-main{padding-top:calc(var(--edge-h) + var(--mast-h) + 22px);padding-bottom:88px}
  .hero-media{height:260px}
  .grid-2,.grid-4{grid-template-columns:1fr}
  .numbered-list{grid-template-columns:1fr}
  .section{padding:28px 0}
  .section-head{align-items:start;flex-direction:column;gap:6px}
  .mobile-dock{position:fixed;z-index:50;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);display:grid;grid-template-columns:repeat(5,1fr)}
  .mobile-dock a{min-width:0;display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--text);min-height:48px}
  .mobile-dock a.is-current{background:var(--green);color:#08110C;font-weight:900}
  .search-layer{top:0;bottom:0;background:var(--bg-deep);overflow-y:auto}
  .search-card{width:100%;min-height:100%;margin:0;border:0;border-radius:0;padding:24px 16px 80px}
  .search-head{padding-top:6px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .site-footer{padding-bottom:calc(80px + env(safe-area-inset-bottom))}
  .media-slot-tall{height:340px}
}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
.top-gap{margin-top:18px}
.app-mini-brand{display:flex;align-items:center;gap:10px;margin-bottom:10px;color:var(--muted);font-size:12px;letter-spacing:.08em}
.app-mini-brand img{width:48px;height:48px;object-fit:contain;object-position:center;border-radius:10px;background:var(--bg-deep);border:1px solid var(--border)}