:root{--brand:#2b3a8f;--brand-600:#23307a;--brand-700:#1b2560;--brand-50:#eef0fb;--accent:#f5a623;--accent-50:#fff5e6;--teal:#12b5a5;--teal-50:#e6f7f5;--ink:#171a2b;--ink-2:#3d4256;--muted:#70768c;--line:#e7e9f1;--bg:#f6f7fb;--surface:#ffffff;--surface-2:#fafbff;--green:#16a34a;--red:#dc2626;--radius:14px;--radius-lg:20px;--radius-sm:9px;--shadow-sm:0 1px 2px rgba(23,26,43,0.06);--shadow:0 6px 20px rgba(23,26,43,0.07);--shadow-lg:0 16px 44px rgba(23,26,43,0.12);--maxw:1160px;--font:"Noto Sans HK","PingFang HK","Microsoft JhengHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",sans-serif}*{box-sizing:border-box}body,html{margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}h1,h2,h3,h4{line-height:1.25;color:var(--ink);margin:0;font-weight:700;letter-spacing:-.01em}h1{font-size:clamp(1.9rem,3.6vw,3rem)}h2{font-size:clamp(1.4rem,2.4vw,2rem)}h3{font-size:1.15rem}p{margin:0}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}ul{margin:0;padding:0;list-style:none}button{font-family:inherit;cursor:pointer}input,select,textarea{font-family:inherit;font-size:1rem}.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 22px}.section{padding:62px 0}.section-sm{padding:40px 0}.stack{flex-direction:column}.row,.stack{display:flex}.row{align-items:center}.gap-8{gap:8px}.gap-12{gap:12px}.gap-16{gap:16px}.gap-24{gap:24px}.mt-8{margin-top:8px}.mt-16{margin-top:16px}.mt-24{margin-top:24px}.mt-32{margin-top:32px}.muted{color:var(--muted)}.center{text-align:center}.eyebrow{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--brand);background:var(--brand-50);padding:5px 12px;border-radius:999px}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap}.section-head p{color:var(--muted);margin-top:6px}.link-more{color:var(--brand);font-weight:600;font-size:.92rem;white-space:nowrap}.link-more:hover{text-decoration:underline}.site-header{position:-webkit-sticky;position:sticky;top:0;z-index:50;background:rgba(255,255,255,.86);-webkit-backdrop-filter:saturate(180%) blur(12px);backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line)}.header-inner{justify-content:space-between;height:66px;gap:20px}.header-inner,.logo{display:flex;align-items:center}.logo{gap:10px;font-weight:800;font-size:1.15rem;letter-spacing:-.02em}.logo-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--brand),var(--brand-700));color:#fff;font-size:.95rem;font-weight:800}.nav{display:flex;align-items:center;gap:4px}.nav a{padding:8px 13px;border-radius:9px;font-size:.93rem;font-weight:600;color:var(--ink-2);transition:background .15s,color .15s}.nav a.active,.nav a:hover{background:var(--brand-50);color:var(--brand)}.header-actions{display:flex;align-items:center;gap:10px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 20px;border-radius:10px;border:1px solid transparent;font-size:.94rem;font-weight:700;transition:transform .12s,box-shadow .15s,background .15s;white-space:nowrap}.btn:active{transform:translateY(1px)}.btn-primary{background:var(--brand);color:#fff;box-shadow:0 4px 14px rgba(43,58,143,.28)}.btn-primary:hover{background:var(--brand-600);box-shadow:0 6px 20px rgba(43,58,143,.34)}.btn-accent{background:var(--accent);color:#3a2600}.btn-accent:hover{background:#ec9a10}.btn-ghost{background:transparent;color:var(--ink-2);border-color:var(--line)}.btn-ghost:hover{background:var(--surface-2);border-color:#d5d9e8}.btn-block{width:100%}.btn-lg{padding:14px 26px;font-size:1rem;border-radius:12px}.hero{position:relative;overflow:hidden;background:linear-gradient(160deg,#eef0fb,#f6f7fb 55%,#e6f7f5)}.hero:after{content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(43,58,143,.14),transparent 68%)}.hero-inner{position:relative;z-index:1;padding:74px 0 80px;display:grid;grid-template-columns:1.08fr .92fr;grid-gap:56px;gap:56px;align-items:center}.hero h1{margin:18px 0 0}.hero h1 span{color:var(--brand)}.hero p.lead{margin-top:18px;font-size:1.08rem;color:var(--ink-2);max-width:34em}.hero-cta{gap:12px;margin-top:28px}.hero-cta,.hero-stats{display:flex;flex-wrap:wrap}.hero-stats{gap:34px;margin-top:38px}.hero-stats b{display:block;font-size:1.6rem;color:var(--brand)}.hero-stats span{font-size:.86rem;color:var(--muted)}.hero-art{position:relative}.hero-art img{border-radius:var(--radius-lg);aspect-ratio:4/3.3;object-fit:cover;width:100%}.hero-art img,.hero-chip{box-shadow:var(--shadow-lg)}.hero-chip{position:absolute;background:#fff;border-radius:14px;padding:12px 16px;display:flex;align-items:center;gap:10px;font-size:.86rem;font-weight:700}.hero-chip .dot{width:9px;height:9px;border-radius:50%}.hero-chip.c1{left:-18px;top:26px}.hero-chip.c2{right:-14px;bottom:34px}.search-bar{display:flex;gap:10px;margin-top:26px;max-width:460px}.search-bar input{flex:1 1;padding:13px 16px;border-radius:12px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-sm);outline:none}.search-bar input:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-50)}.grid{display:grid;grid-gap:24px;gap:24px}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}.grid-auto{grid-template-columns:repeat(auto-fill,minmax(268px,1fr))}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .16s,box-shadow .16s,border-color .16s;display:flex;flex-direction:column}.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#d9deee}.card-cover{aspect-ratio:16/10;width:100%;object-fit:cover;background:var(--brand-50)}.card-body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1 1}.card-title{font-size:1.06rem;font-weight:700;line-height:1.4}.card-desc{color:var(--muted);font-size:.9rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:10px;border-top:1px solid var(--line)}.price{font-weight:800;color:var(--brand);font-size:1.05rem}.price.free{color:var(--green)}.badges{display:flex;gap:7px;flex-wrap:wrap}.badge{font-size:.76rem;font-weight:700;padding:4px 10px;border-radius:999px;background:var(--brand-50);color:var(--brand)}.badge-teal{background:var(--teal-50);color:#0c8a7d}.badge-accent{background:var(--accent-50);color:#a86a00}.badge-muted{background:#f0f1f5;color:var(--muted)}.badge-green{background:#e8f7ee;color:var(--green)}.meta{display:flex;align-items:center;gap:8px;font-size:.85rem;color:var(--muted);flex-wrap:wrap}.meta .sep{width:3px;height:3px;border-radius:50%;background:#c7cbdb}.rating{color:var(--accent);font-weight:700}.entry{padding:26px;border-radius:var(--radius-lg);border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-sm);transition:transform .16s,box-shadow .16s}.entry:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.entry .ico{display:grid;place-items:center;width:52px;height:52px;border-radius:14px;font-size:1.5rem;margin-bottom:16px}.entry h3{margin-bottom:8px}.entry p{color:var(--muted);font-size:.92rem}.page-head{background:linear-gradient(160deg,#eef0fb,#f6f7fb);border-bottom:1px solid var(--line);padding:46px 0 40px}.page-head h1{font-size:clamp(1.7rem,3vw,2.4rem)}.page-head p{color:var(--muted);margin-top:10px;max-width:44em}.filters{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:28px}.filters .fl{font-size:.86rem;font-weight:700;color:var(--muted)}.chip{padding:8px 15px;border-radius:999px;border:1px solid var(--line);background:#fff;font-size:.88rem;font-weight:600;color:var(--ink-2);transition:all .14s}.chip:hover{color:var(--brand)}.chip.active,.chip:hover{border-color:var(--brand)}.chip.active{background:var(--brand);color:#fff}.filter-group{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.filter-group+.filter-group{margin-left:8px;padding-left:18px;border-left:1px solid var(--line)}.detail-grid{display:grid;grid-template-columns:1fr 340px;grid-gap:40px;gap:40px;align-items:start}.article-body{font-size:1.03rem;color:var(--ink-2)}.article-body p{margin:0 0 18px}.article-cover{border-radius:var(--radius-lg);overflow:hidden;margin:26px 0;box-shadow:var(--shadow)}.article-cover img{width:100%;aspect-ratio:16/8;object-fit:cover}.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-sm);position:-webkit-sticky;position:sticky;top:86px}.side-card h3{margin-bottom:14px}.lesson{display:flex;align-items:center;gap:14px;padding:14px 0;border-bottom:1px solid var(--line)}.lesson:last-child{border-bottom:none}.lesson .num{display:grid;place-items:center;width:30px;height:30px;border-radius:8px;background:var(--brand-50);color:var(--brand);font-weight:700;font-size:.85rem;flex-shrink:0}.lesson .t{flex:1 1;font-weight:600;font-size:.95rem}.lesson .d{font-size:.85rem}.lesson .d,.lesson-play{color:var(--muted)}.buy-row{display:flex;align-items:center;justify-content:space-between;margin:16px 0}.buy-price{font-size:1.7rem;font-weight:800;color:var(--brand)}.kv{display:flex;justify-content:space-between;padding:11px 0;border-bottom:1px dashed var(--line);font-size:.92rem}.kv:last-child{border-bottom:none}.kv span:first-child{color:var(--muted)}.kv span:last-child{font-weight:600}.mat-card{display:flex;gap:16px;padding:18px}.mat-icon{display:grid;place-items:center;width:54px;height:54px;border-radius:13px;font-size:1.4rem;flex-shrink:0}.mat-main{flex:1 1;min-width:0}.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:30px;box-shadow:var(--shadow-sm)}.field{margin-bottom:18px}.field label{display:block;font-weight:700;font-size:.9rem;margin-bottom:7px}.field .hint{font-size:.82rem;color:var(--muted);font-weight:400;margin-left:6px}.field input,.field select,.field textarea{width:100%;padding:11px 14px;border-radius:10px;border:1px solid var(--line);background:var(--surface-2);outline:none;transition:border-color .14s,box-shadow .14s}.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px var(--brand-50)}.field textarea{resize:vertical;min-height:96px}.field-row{display:grid;grid-template-columns:1fr 1fr;grid-gap:16px;gap:16px}.checkbox{display:flex;align-items:flex-start;gap:10px;font-size:.9rem;color:var(--ink-2)}.checkbox input{width:auto;margin-top:3px}.dropzone{border:2px dashed #c8cee2;border-radius:var(--radius);background:var(--surface-2);padding:40px 20px;text-align:center;transition:border-color .15s,background .15s;cursor:pointer}.dropzone.drag,.dropzone:hover{border-color:var(--brand);background:var(--brand-50)}.dropzone .ico{font-size:2.2rem;margin-bottom:10px}.dropzone .file{margin-top:12px;font-weight:700;color:var(--brand)}.site-footer{background:#14172a;color:#b9bccc;margin-top:40px;padding:52px 0 30px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;grid-gap:36px;gap:36px}.site-footer h4{color:#fff;font-size:.95rem;margin-bottom:14px}.site-footer a{color:#b9bccc;font-size:.9rem;line-height:2}.site-footer a:hover{color:#fff}.site-footer .logo{color:#fff;margin-bottom:12px}.site-footer .about{font-size:.9rem;max-width:30em;line-height:1.7}.footer-bottom{border-top:1px solid #262a42;margin-top:38px;padding-top:22px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:.85rem}.empty{text-align:center;padding:60px 20px;color:var(--muted)}.empty .ico{font-size:2.6rem;margin-bottom:12px}.notice{background:var(--accent-50);border:1px solid #f5d79a;color:#8a5a00;padding:13px 16px;border-radius:10px;font-size:.88rem}.notice-ok{background:var(--teal-50);border-color:#9fded6;color:#0c7a6e}.crumb{display:flex;gap:8px;font-size:.87rem;color:var(--muted);margin-bottom:14px;flex-wrap:wrap}.crumb a:hover{color:var(--brand)}@media (max-width:980px){.hero-inner{gap:40px;padding:52px 0 60px}.detail-grid,.hero-inner{grid-template-columns:1fr}.detail-grid{gap:28px}.side-card{position:static}.grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr 1fr}}@media (max-width:720px){.nav{display:none}.field-row,.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}.filter-group+.filter-group{margin-left:0;padding-left:0;border-left:none}.footer-grid{grid-template-columns:1fr;gap:24px}.section{padding:44px 0}}.adm-shell{display:grid;grid-template-columns:236px 1fr;min-height:100vh;background:#f2f4f9}.adm-side{background:#14172a;color:#c8cbd9;display:flex;flex-direction:column;position:-webkit-sticky;position:sticky;top:0;height:100vh}.adm-brand{display:flex;align-items:center;gap:10px;padding:20px;font-weight:800;color:#fff;border-bottom:1px solid #262a42}.adm-brand .logo-mark{width:32px;height:32px;font-size:.8rem}.adm-brand small{display:block;font-size:.68rem;font-weight:500;color:#8b90a8;letter-spacing:.06em}.adm-nav{padding:14px 12px;display:flex;flex-direction:column;gap:3px;flex:1 1;overflow-y:auto}.adm-nav .grp{font-size:.68rem;font-weight:700;letter-spacing:.1em;color:#6a6f8a;padding:14px 10px 6px;text-transform:uppercase}.adm-nav a{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:9px;font-size:.9rem;font-weight:600;color:#c8cbd9;transition:background .14s,color .14s}.adm-nav a:hover{background:#1f2338;color:#fff}.adm-nav a.active{background:var(--brand);color:#fff}.adm-nav .ico{width:18px;text-align:center}.adm-user{border-top:1px solid #262a42;padding:14px 18px;font-size:.82rem}.adm-user b{color:#fff;display:block;font-size:.88rem}.adm-user .out{color:#8b90a8;margin-top:6px;display:inline-block}.adm-user .out:hover{color:#fff}.adm-main{min-width:0;display:flex;flex-direction:column}.adm-top{background:#fff;border-bottom:1px solid var(--line);padding:16px 28px;display:flex;align-items:center;justify-content:space-between;gap:16px;position:-webkit-sticky;position:sticky;top:0;z-index:10}.adm-top h1{font-size:1.25rem}.adm-top p{font-size:.85rem;color:var(--muted);margin-top:2px}.adm-content{padding:28px;flex:1 1}.adm-stats{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:18px;gap:18px}.adm-stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px}.adm-stat .ico{display:grid;place-items:center;width:42px;height:42px;border-radius:11px;font-size:1.2rem;margin-bottom:12px}.adm-stat .n{font-size:1.9rem;font-weight:800;color:var(--brand);line-height:1.1}.adm-stat .l{font-size:.86rem;color:var(--muted);margin-top:4px}.adm-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.adm-panel-head{padding:16px 20px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.adm-panel-head h3{font-size:1rem}.adm-panel-body{padding:0}.adm-table{width:100%;border-collapse:collapse;font-size:.9rem}.adm-table th{text-align:left;padding:12px 20px;font-size:.78rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--muted);background:var(--surface-2);white-space:nowrap}.adm-table td,.adm-table th{border-bottom:1px solid var(--line)}.adm-table td{padding:14px 20px;vertical-align:middle}.adm-table tr:last-child td{border-bottom:none}.adm-table tr:hover td{background:#fafbff}.adm-table .t-title{font-weight:600}.adm-table .t-sub{font-size:.82rem;color:var(--muted);margin-top:2px}.adm-tbl-wrap{overflow-x:auto}.adm-actions{display:flex;gap:8px;flex-wrap:wrap}.btn-sm{padding:6px 12px;font-size:.82rem;border-radius:8px}.btn-ok{background:#e8f7ee;color:var(--green);border:1px solid #b7e6c9}.btn-ok:hover{background:#d7f0e1}.btn-no{background:#fdeaea;color:var(--red);border:1px solid #f6c6c6}.btn-no:hover{background:#fbdada}.adm-empty{padding:48px 20px;text-align:center;color:var(--muted)}.adm-login-wrap{min-height:100vh;display:grid;place-items:center;background:linear-gradient(160deg,#eef0fb,#f6f7fb);padding:24px}.adm-login{width:100%;max-width:400px}.adm-login .brand{display:flex;align-items:center;gap:10px;justify-content:center;margin-bottom:22px;font-weight:800;font-size:1.2rem}.adm-loading{min-height:100vh;display:grid;place-items:center;color:var(--muted)}@media (max-width:860px){.adm-shell{grid-template-columns:1fr}.adm-side{position:static;height:auto}.adm-nav{flex-direction:row;overflow-x:auto}.adm-nav .grp{display:none}.adm-stats{grid-template-columns:repeat(2,1fr)}.adm-content{padding:18px}}