:root{--bg:#0C100E;--deep:#080A09;--card:#141A16;--card2:#1A2420;--title:#E8F6EE;--text:#CDE3D6;--muted:#8FB3A0;--assist:#6E8F7E;--green:#2A9D5C;--bright:#3CB371;--darkg:#146B3A;--sand:#EFE6D2;--line:rgba(42,157,92,.18);--line2:rgba(42,157,92,.45);--shadow:0 12px 28px rgba(8,10,9,.35);--r:12px;--top:122px}*{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;padding-top:var(--top)}a{color:inherit;text-decoration:none}a,button{touch-action:manipulation}button{font:inherit}.shell{width:min(1120px,calc(100% - 32px));margin:0 auto}.skip-link{position:fixed;left:12px;top:-80px;z-index:1000;background:var(--sand);color:#08110C;padding:10px 14px;border-radius:8px}.skip-link:focus{top:8px}.boundary-bar{position:fixed;inset:0 0 auto 0;height:22px;background:#050706;color:var(--bright);z-index:120;border-bottom:1px solid var(--line)}.boundary-inner{height:22px;display:flex;align-items:center;justify-content:space-between;font-size:12px;line-height:1}.text-button,.menu-button,.icon-button{border:0;background:transparent;color:inherit;cursor:pointer;min-height:44px}.boundary-bar .text-button{position:relative;min-height:22px;padding:0 2px;color:var(--bright);font-size:12px}.boundary-bar .text-button:after{content:"";position:absolute;inset:-11px -10px}.main-bar{position:fixed;top:22px;left:0;right:0;height:60px;background:rgba(8,10,9,.98);z-index:119;border-bottom:1px solid var(--line2);backdrop-filter:blur(10px)}.main-bar-inner{height:60px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px}.brand-link{justify-self:start;min-height:44px;display:flex;align-items:center}.brand-logo{display:block;height:28px;max-width:160px;width:auto;object-fit:contain;object-position:center}.brand-text{font-size:16px;font-weight:800;color:var(--title)}.menu-button{justify-self:center;padding:0 18px;color:var(--title);border:1px solid var(--line2);border-radius:999px;background:#0d1511}.app-link{justify-self:end;min-height:44px;display:inline-flex;align-items:center;padding:0 16px;border-radius:9px;background:linear-gradient(135deg,#3CB371 0%,#2A9D5C 55%,#146B3A 100%);color:#08110C;font-weight:800;font-size:14px}.layer-tabs{position:fixed;top:82px;left:0;right:0;height:40px;background:#0b2f1c;z-index:118;border-bottom:1px solid var(--line2)}.layer-tabs-inner{height:40px;display:flex;align-items:center;justify-content:center;gap:8px}.layer-tab{position:relative;font-size:13px;min-height:32px;padding:0 14px;border-radius:8px;display:inline-flex;align-items:center;color:var(--text)}.layer-tab:after{content:"";position:absolute;inset:-6px -4px}.layer-tab.is-current{background:var(--green);color:#08110C;font-weight:800}.site-main{min-height:70vh;padding:34px 0 64px}.eyebrow{color:var(--bright);font-size:12px;letter-spacing:.12em;text-transform:uppercase;margin:0 0 8px}.page-hero{padding:20px 0 22px;border-bottom:1px solid var(--line);margin-bottom:22px}.page-hero h1,.cover-copy h1{font-size:24px;line-height:1.3;color:var(--title);margin:0 0 12px}.page-hero p,.cover-copy p{max-width:820px;margin:0;color:var(--muted)}h2{font-size:20px;line-height:1.35;color:var(--title);margin:0 0 12px}h3{font-size:16px;line-height:1.4;color:var(--sand);margin:0 0 8px}p{margin:0 0 12px}.section{padding:28px 0;border-bottom:1px solid var(--line)}.section:last-child{border-bottom:0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:14px;margin-bottom:16px}.section-head p{color:var(--muted);max-width:640px;margin:0}.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(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px;box-shadow:var(--shadow)}.card p:last-child{margin-bottom:0}.card .meta{color:var(--bright);font-size:12px;margin-bottom:7px}.card .sub{color:var(--muted)}.card a.more{display:inline-flex;align-items:center;min-height:44px;margin-top:8px;color:var(--sand);font-weight:700}.cover{padding:0 0 28px;border-bottom:1px solid var(--line)}.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{display:block;width:100%;height:100%;object-fit:contain;object-position:center}.media-260{height:260px}.media-200{height:200px}.media-180{height:180px}.media-app{height:min(360px,56vw);min-height:280px}.media-icon{width:48px;height:48px;border-radius:12px;flex:0 0 48px}.cover-copy{padding-top:18px}.button-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}.btn{min-height:42px;padding:0 16px;border-radius:9px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:800}.btn-primary{background:linear-gradient(135deg,#3CB371 0%,#2A9D5C 55%,#146B3A 100%);color:#08110C}.btn-secondary{background:#0a0f0c;border:1px solid var(--line2);color:var(--text)}.btn:hover,.app-link:hover,.menu-button:hover,.layer-tab:hover,.drawer a:hover,.search-links a:hover{filter:brightness(1.08)}a:focus-visible,button:focus-visible{outline:2px solid var(--sand);outline-offset:3px}.number-list{display:grid;gap:10px;counter-reset:item}.number-list>div{display:grid;grid-template-columns:40px 1fr;gap:12px;align-items:start;padding:14px;background:var(--card);border:1px solid var(--line);border-radius:10px}.number-list strong{width:40px;height:40px;border-radius:9px;display:flex;align-items:center;justify-content:center;background:var(--green);color:#08110C}.lesson-list,.link-list{display:grid;gap:10px}.lesson-list>div,.link-list>a{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:14px}.link-list>a{min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:14px}.timeline{position:relative;margin-left:8px;padding-left:26px}.timeline:before{content:"";position:absolute;left:6px;top:8px;bottom:8px;width:1px;background:var(--line2)}.timeline-item{position:relative;margin:0 0 16px;padding:15px 16px;background:var(--card);border:1px solid var(--line);border-radius:10px}.timeline-item:before{content:"";position:absolute;left:-25px;top:23px;width:11px;height:11px;border-radius:50%;background:var(--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:#0a2d1b;border:1px solid var(--line2);color:var(--text);font-size:12px}.notice{padding:16px;border-radius:10px;background:#101712;border:1px solid var(--line2);color:var(--text)}.faq-list{display:grid;gap:12px}.faq-item{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:17px}.faq-item h2{font-size:16px;margin-bottom:8px}.faq-item p{color:var(--text);margin:0}.contact-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.app-feature{display:grid;grid-template-columns:minmax(240px,.75fr) 1.25fr;gap:18px;align-items:stretch}.app-copy{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px}.icon-line{display:flex;align-items:center;gap:12px;margin-bottom:12px}.site-footer{background:#050706;border-top:1px solid var(--line2);padding:30px 0 calc(28px + env(safe-area-inset-bottom));color:var(--text);font-size:13px}.footer-grid{display:grid;grid-template-columns:1.6fr repeat(4,1fr);gap:24px}.footer-grid h2{font-size:13px;color:var(--bright);margin-bottom:10px}.footer-grid a{display:flex;align-items:center;min-height:44px;color:var(--text)}.footer-brand p{color:var(--muted);max-width:460px}.footer-logo-link{display:flex!important;align-items:center;gap:10px;margin-bottom:12px;min-height:44px!important}.footer-logo-link span{display:grid;line-height:1.25}.footer-logo-link strong{font-size:16px;color:var(--title)}.footer-logo-link small{font-size:11px;color:var(--muted)}.footer-bottom{border-top:1px solid var(--line);margin-top:24px;padding-top:16px;color:var(--assist)}.drawer{position:fixed;z-index:210;left:0;top:0;bottom:0;width:min(400px,86vw);background:#070b09;border-right:1px solid var(--line2);box-shadow:var(--shadow);transform:translateX(-103%);visibility:hidden;pointer-events:none;transition:transform .22s ease,visibility .22s ease;overflow:auto}.drawer.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{height:68px;display:flex;align-items:center;justify-content:space-between;padding:0 16px;border-bottom:1px solid var(--line);position:sticky;top:0;background:#070b09;z-index:2}.drawer-brand{display:flex;align-items:center;gap:10px;font-weight:800}.icon-button{min-width:44px;padding:0 10px;color:var(--text);border:1px solid var(--line);border-radius:9px}.drawer-body{padding:12px 16px 28px}.drawer-body section{padding:12px 0;border-bottom:1px solid var(--line)}.drawer-body section:last-child{border:0}.drawer-body h2{font-size:12px;color:var(--bright);letter-spacing:.08em;margin-bottom:8px}.drawer-body a{display:grid;grid-template-columns:88px 1fr;gap:10px;padding:11px 8px;border-radius:9px;min-height:58px}.drawer-body b{color:var(--title)}.drawer-body span{color:var(--muted);font-size:13px}.search-panel{position:fixed;z-index:205;top:82px;left:0;right:0;visibility:hidden;pointer-events:none;transform:translateY(-12px);opacity:0;transition:.18s ease}.search-panel.is-open{visibility:visible;pointer-events:auto;transform:translateY(0);opacity:1}.search-card{width:min(760px,calc(100% - 32px));margin:14px auto;background:#070b09;border:1px solid var(--line2);border-radius:14px;padding:18px;box-shadow:var(--shadow)}.search-head{display:flex;align-items:center;justify-content:space-between}.search-card p{color:var(--muted)}.search-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.search-links a{min-height:44px;display:flex;align-items:center;justify-content:center;background:var(--card);border:1px solid var(--line);border-radius:9px}.site-overlay{position:fixed;inset:0;z-index:200;background:rgba(0,0,0,.62);opacity:0;visibility:hidden;pointer-events:none;transition:.18s ease}.site-overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.ui-locked{overflow:hidden}.mobile-bottom{display:none}.pill-row{display:flex;flex-wrap:wrap;gap:8px}.pill{display:inline-flex;align-items:center;min-height:32px;padding:0 10px;border-radius:999px;background:#102018;border:1px solid var(--line);color:var(--muted);font-size:12px}.spaced-top{margin-top:16px}.spaced-top-lg{margin-top:18px}.article-copy{max-width:860px}.article-copy p{margin-bottom:15px}.quote-note{border-left:3px solid var(--green);padding:6px 0 6px 16px;color:var(--sand)}
@media(max-width:840px){:root{--top:82px}.layer-tabs{display:none}.site-main{padding-top:28px;padding-bottom:88px}.grid-3,.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-brand{grid-column:1/-1}.app-feature{grid-template-columns:1fr}.mobile-bottom{position:fixed;display:grid;grid-template-columns:repeat(5,1fr);left:0;right:0;bottom:0;z-index:150;min-height:48px;padding-bottom:env(safe-area-inset-bottom);background:#060907;border-top:1px solid var(--line2)}.mobile-bottom a{min-height:48px;display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--text)}.mobile-bottom a.is-current{background:var(--green);color:#08110C;font-weight:800}.site-footer{padding-bottom:calc(84px + env(safe-area-inset-bottom))}}
@media(max-width:620px){.shell{width:min(100% - 32px,1120px)}.main-bar-inner{grid-template-columns:minmax(72px,1fr) auto minmax(72px,1fr);gap:6px}.brand-logo{max-width:112px}.brand-text{font-size:15px}.menu-button{padding:0 14px}.app-link{padding:0 12px;font-size:13px}.cover-copy h1,.page-hero h1{font-size:24px}.grid-2,.grid-3,.grid-4,.contact-grid{grid-template-columns:1fr}.media-260{height:220px}.media-200,.media-180{height:180px}.section{padding:24px 0}.section-head{align-items:start;flex-direction:column}.search-panel{top:0;bottom:0;background:#050706;overflow:auto}.search-card{width:100%;min-height:100%;margin:0;border:0;border-radius:0;padding:calc(24px + env(safe-area-inset-top)) 16px 80px}.search-links{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}.drawer-body a{grid-template-columns:80px 1fr}.number-list>div{grid-template-columns:36px 1fr}.number-list strong{width:36px;height:36px}}