:root{--bg:#0C100E;--deep:#080A09;--panel:#141A16;--panel2:#1A2420;--title:#E8F6EE;--text:#CDE3D6;--muted:#8FB3A0;--aux:#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);--max:1120px)}
*{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}a{color:inherit;text-decoration:none}button{font:inherit}.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}.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,.main-bar__inner,.layer-tabs__inner,.page-wrap,.footer-inner{width:min(calc(100% - 32px),var(--max));margin:0 auto}.top-line__inner{height:22px;display:flex;align-items:center;justify-content:space-between;font-size:12px}.text-button,.icon-button,.drawer-toggle{border:0;background:none;color:inherit;cursor:pointer}.text-button{height:22px;padding:0 6px;color:var(--bright)}.main-bar{position:fixed;top:22px;left:0;right:0;height:60px;background:rgba(8,10,9,.98);border-bottom:1px solid var(--border-strong);z-index:89}.main-bar__inner{height:60px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px}.brand-link{justify-self:start;display:flex;align-items:center;min-height:44px}.brand-logo{display:block;height:28px;max-width:170px;object-fit:contain;object-position:left center}.brand-text{font-size:16px;font-weight:800;color:var(--title)}.drawer-toggle{justify-self:center;min-width:72px;height:44px;border:1px solid var(--border-strong);border-radius:12px;color:var(--text);background:#0D1410}.app-link{justify-self:end;display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 16px;border-radius:12px;background:linear-gradient(135deg,#3CB371 0%,#2A9D5C 55%,#146B3A 100%);color:#08110C;font-weight:800;white-space:nowrap}.layer-tabs{position:fixed;top:82px;left:0;right:0;height:40px;background:var(--darkgreen);border-bottom:1px solid var(--border-strong);z-index:88}.layer-tabs__inner{height:40px;display:flex;justify-content:center;align-items:center;gap:10px}.layer-tabs a{display:inline-flex;align-items:center;justify-content:center;height:32px;padding:0 16px;border-radius:9px;font-size:13px;color:var(--sand)}.layer-tabs a.is-active{background:var(--green);color:#08110C;font-weight:800}.site-main{padding-top:142px;min-height:70vh}.page-wrap{padding-bottom:64px}.page-hero{padding:28px 0 22px}.eyebrow{margin:0 0 8px;color:var(--bright);font-size:12px;letter-spacing:.12em}.page-hero h1{margin:0;color:var(--title);font-size:24px;line-height:1.3}.lede{max-width:820px;margin:12px 0 0;color:var(--muted)}h2{font-size:20px;line-height:1.35;color:var(--title);margin:0 0 14px}h3{font-size:16px;color:var(--sand);margin:0 0 8px}p{margin:0 0 12px}.section{padding:24px 0;border-top:1px solid var(--border)}.cards-3,.cards-4,.grid-2{display:grid;gap:16px}.cards-3{grid-template-columns:repeat(3,minmax(0,1fr))}.cards-4{grid-template-columns:repeat(4,minmax(0,1fr))}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.card,.note-box,.timeline-item,.article-block,.index-card{background:linear-gradient(180deg,var(--panel) 0%,#101612 100%);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow)}.card,.index-card{padding:16px}.card p,.article-block p,.index-card p{color:var(--text)}.card .meta,.meta{font-size:13px;color:var(--muted)}.media-slot{width:100%;background:var(--deep);border:1px solid var(--border);border-radius:12px;overflow:hidden;display:flex;align-items:center;justify-content:center}.media-slot img{display:block;width:100%;height:100%;object-fit:contain;object-position:center}.media-slot.banner{height:260px}.media-slot.tile{height:180px}.media-slot.feature{height:200px}.media-slot.app-visual{height:min(360px,60vw)}.cover-copy{padding:18px 0 0}.cover-copy .brandline{color:var(--bright);font-weight:700}.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:18px}.btn{min-height:44px;padding:0 18px;border-radius:12px;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:#0B100D;border:1px solid var(--border-strong);color:var(--text)}a:hover,.text-button:hover,.drawer-toggle:hover,.icon-button: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}.number-item{display:grid;grid-template-columns:44px 1fr;gap:12px;align-items:start;padding:12px 0;border-bottom:1px dashed var(--border)}.number-item:last-child{border-bottom:0}.number-item b{display:flex;align-items:center;justify-content:center;min-height:36px;border-radius:10px;background:var(--green);color:#08110C}.lesson-list,.plain-list{margin:0;padding:0;list-style:none;display:grid;gap:10px}.lesson-list li,.plain-list li{padding:12px 14px;background:var(--panel2);border:1px solid var(--border);border-radius:10px}.timeline{position:relative;display:grid;gap:14px}.timeline:before{content:"";position:absolute;left:15px;top:8px;bottom:8px;width:1px;background:var(--border-strong)}.timeline-item{position:relative;margin-left:42px;padding:16px}.timeline-item:before{content:"";position:absolute;left:-34px;top:22px;width:10px;height:10px;border-radius:50%;background:var(--bright);box-shadow:0 0 0 5px var(--bg)}.status{display:inline-flex;min-height:28px;align-items:center;padding:0 10px;border-radius:999px;background:var(--green);color:#08110C;font-size:12px;font-weight:800}.article-block{padding:18px;margin-bottom:16px}.article-block ul{margin:8px 0 0 1.1em;padding:0}.article-block li{margin-bottom:6px}.note-box{padding:18px;border-color:var(--border-strong)}.quote-line{padding:14px 16px;border-left:3px solid var(--bright);background:var(--panel2);border-radius:0 10px 10px 0;color:var(--sand)}.faq-list{display:grid;gap:14px}.faq-item{padding:18px;background:var(--panel);border:1px solid var(--border);border-radius:12px}.faq-item h2{font-size:16px;margin-bottom:10px}.app-pair{display:grid;grid-template-columns:minmax(0,1fr) minmax(260px,.72fr);gap:20px;align-items:center}.icon-row{display:flex;align-items:center;gap:12px;margin-bottom:12px}.app-icon{width:48px;height:48px;object-fit:contain;background:var(--deep);border-radius:12px;border:1px solid var(--border)}.site-footer{background:#050706;border-top:1px solid var(--border-strong);color:var(--text);padding:34px 0 calc(66px + env(safe-area-inset-bottom))}.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:24px}.footer-brand div{display:grid}.footer-brand span{font-size:12px;color:var(--muted)}.footer-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px}.footer-grid h2{font-size:13px;color:var(--bright);margin-bottom:8px}.footer-grid a{display:block;font-size:13px;color:var(--text);padding:4px 0}.footer-note,.footer-copy{font-size:13px;color:var(--muted)}.footer-note{margin-top:22px;padding-top:18px;border-top:1px solid var(--border)}.overlay{position:fixed;inset:0;background:rgba(0,0,0,.62);z-index:120;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.overlay.is-active{opacity:1;visibility:visible;pointer-events:auto}.drawer{position:fixed;top:0;bottom:0;left:0;width:min(400px,86vw);background:#09100C;border-right:1px solid var(--border-strong);z-index:130;transform:translateX(-102%);visibility:hidden;pointer-events:none;transition:transform .24s ease,visibility .24s;overflow-y:auto}.drawer.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{position:sticky;top:0;background:#09100C;display:flex;align-items:center;justify-content:space-between;padding:16px;border-bottom:1px solid var(--border);z-index:2}.drawer-brand{display:flex;align-items:center;gap:10px;color:var(--title);font-weight:800}.icon-button{min-height:44px;padding:0 12px;border:1px solid var(--border-strong);border-radius:10px;color:var(--text);background:#0D1510}.drawer-groups{padding:8px 16px 28px}.drawer-groups section{padding:12px 0;border-bottom:1px solid var(--border)}.drawer-groups h2{font-size:13px;color:var(--bright);margin-bottom:6px}.drawer-groups a{display:grid;padding:10px 0}.drawer-groups a b{font-size:15px;color:var(--title)}.drawer-groups a span{font-size:12px;color:var(--muted)}.search-layer{position:fixed;top:82px;left:0;right:0;z-index:128;visibility:hidden;pointer-events:none;transform:translateY(-16px);opacity:0;transition:.2s}.search-layer.is-open{visibility:visible;pointer-events:auto;transform:translateY(0);opacity:1}.search-card{width:min(calc(100% - 32px),760px);margin:0 auto;background:#07100B;border:1px solid var(--border-strong);border-radius:0 0 14px 14px;box-shadow:var(--shadow);padding:18px}.search-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.search-head h2{font-size:16px;margin:0}.search-links{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:14px}.search-links a{min-height:44px;display:flex;align-items:center;padding:0 12px;background:var(--panel);border:1px solid var(--border);border-radius:10px}.lock-scroll{overflow:hidden}.mobile-bottom{display:none}
@media(max-width:800px){.layer-tabs{display:none}.site-main{padding-top:102px}.main-bar__inner{grid-template-columns:minmax(0,1fr) auto auto;gap:8px}.brand-logo{max-width:112px}.drawer-toggle{min-width:64px}.app-link{padding:0 12px}.cards-3,.cards-4,.grid-2,.app-pair{grid-template-columns:1fr}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.search-layer{top:0;bottom:0;background:#050706}.search-card{width:100%;height:100%;border:0;border-radius:0;padding:24px 16px}.search-links{grid-template-columns:1fr}.mobile-bottom{position:fixed;left:0;right:0;bottom:0;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:#07100B;border-top:1px solid var(--border-strong);z-index:95;display:grid;grid-template-columns:repeat(5,1fr)}.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))}.media-slot.banner{height:220px}.page-hero{padding-top:22px}} 
@media(max-width:430px){.top-line__inner,.main-bar__inner,.page-wrap,.footer-inner{width:calc(100% - 32px)}.brand-text{font-size:15px}.app-link,.drawer-toggle{font-size:13px}.footer-grid{grid-template-columns:1fr 1fr}.media-slot.banner{height:190px}.cards-3{grid-template-columns:1fr}.actions{display:grid;grid-template-columns:1fr 1fr}.btn{padding:0 12px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}