:root{font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:#25263d;background:#f5f6fb;font-synthesis:none;--purple:#7253ed;--ink:#25263d;--muted:#777c93;--line:#e9eaf2}*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit}button,a,input,select,textarea{outline-offset:4px}button,a{ -webkit-tap-highlight-color:transparent}button{cursor:pointer;border:0}button:disabled{opacity:.5;cursor:not-allowed}a{text-decoration:none;color:inherit}button.primary{background:var(--purple);color:white;border-radius:14px;padding:14px 24px;font-weight:700}button.secondary{background:#eeebfc;color:#6443cc;border-radius:12px;padding:12px 18px}button.ghost{background:transparent;color:var(--muted);padding:10px}button.danger{background:#fff0ef;color:#c54355;border-radius:10px;padding:9px 15px}.brand{display:flex;align-items:center;gap:10px;font-weight:850;font-size:25px;letter-spacing:1px}.brand img{width:44px;height:44px}.brand small{font-size:11px;color:#9294aa;display:block;letter-spacing:3px}.topbar{height:90px;background:white;border-bottom:1px solid var(--line);display:flex;align-items:center;padding:0 40px;gap:40px;position:sticky;top:0;z-index:20}.topbar nav{display:flex;height:100%;gap:32px;align-items:center}.topbar nav button{height:100%;background:transparent;font-weight:650;color:var(--muted);border-bottom:3px solid transparent;padding:0 5px}.topbar nav button.active{color:var(--purple);border-color:var(--purple)}.top-actions{margin-left:auto;display:flex;gap:12px;align-items:center}.language{border:1px solid var(--line);padding:10px 13px;border-radius:12px;background:white}.avatar{height:40px;width:40px;background:#ede4ff;color:#7857c8;display:grid;place-items:center;border-radius:14px;font-weight:800}.shell{display:grid;grid-template-columns:205px 1fr;min-height:calc(100vh - 90px)}.sidebar{background:white;padding:32px 18px;border-right:1px solid var(--line);display:flex;flex-direction:column;gap:9px}.sidebar button{background:transparent;text-align:left;padding:14px;border-radius:12px;color:#747890;font-weight:600}.sidebar button.active{background:#f0ebff;color:var(--purple)}.sidebar .side-note{margin-top:auto;padding:20px 14px;background:#f6f8f3;border-radius:15px;font-size:12px;line-height:1.9;color:#718263}.side-title{color:#a3a5b6;font-size:11px;padding:10px 14px;letter-spacing:2px}.content{max-width:1500px;width:100%;padding:32px 36px 50px;min-width:0}.eyebrow{font-size:12px;letter-spacing:2px;font-weight:750;color:var(--purple)}.greeting{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.greeting h1{font-size:25px;margin:6px 0}.muted{color:var(--muted)}.greeting p{margin:7px 0;font-size:14px}.wallet{display:flex;gap:10px}.pill{display:inline-flex;align-items:center;gap:7px;padding:10px 15px;background:white;border-radius:12px;font-weight:700;font-size:14px}.hero{display:grid;grid-template-columns:1fr 1.04fr;border-radius:26px;background:#e9e4ff;overflow:hidden;min-height:370px;position:relative}.hero-copy{padding:38px 38px 32px;position:relative;z-index:1}.badge{display:inline-flex;background:#fff9;color:#6941cb;border-radius:8px;font-size:12px;padding:6px 10px;gap:6px}.hero h2{font-size:42px;letter-spacing:-1px;line-height:1.25;margin:24px 0 16px}.hero p{color:#78718f;line-height:1.9;font-size:14px;max-width:320px}.hero .primary{margin-top:18px}.hero-art{width:100%;height:100%;object-fit:cover}.hero-footer{font-size:12px!important}.home-grid{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:24px;margin-top:28px}.section-title{display:flex;justify-content:space-between;align-items:center;margin:0 0 18px}.section-title h2{font-size:20px;margin:0}.search{border:1px solid var(--line);border-radius:12px;padding:10px 14px;background:white;width:200px}.chips{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:20px}.chips button{padding:9px 15px;border-radius:20px;background:white;color:#80839a;font-size:13px}.chips button.active{background:#292942;color:white}.game-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.game-card{background:white;border:1px solid var(--line);border-radius:20px;overflow:hidden}.game-card img{width:100%;aspect-ratio:1.8;object-fit:cover}.game-card .body{padding:20px}.game-card h3{margin:0 0 7px;font-size:20px}.game-card p{font-size:13px;color:var(--muted);line-height:1.8}.game-card .card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:20px}.tag{font-size:11px;background:#f0f2fa;padding:5px 9px;border-radius:6px;color:#767b98}.coming{padding:35px;min-height:310px;display:flex;justify-content:center;flex-direction:column;background:linear-gradient(135deg,#f0f5ff,#e9edf8);border:1px dashed #cfd5e6;border-radius:20px}.coming .spark{font-size:44px}.coming p{font-size:13px;line-height:1.8;color:var(--muted)}.learning-card{border-radius:22px;background:#fff8df;padding:25px}.learning-card .book{font-size:40px;margin:10px 0 20px}.learning-card h3{font-size:23px;line-height:1.4;margin:10px 0}.learning-card p{font-size:13px;line-height:1.9;color:#948760}.learning-card button{width:100%;margin-top:12px;background:#292942;color:white;border-radius:12px;padding:13px}.learn-reward{display:flex;gap:10px;margin:18px 0;font-weight:750;font-size:14px;color:#856220}.parent-card{padding:20px;margin-top:18px;background:#e7f4ef;border-radius:18px;line-height:1.9;font-size:13px;color:#487965}.card{background:white;border:1px solid var(--line);padding:26px;border-radius:20px;margin-bottom:20px}.card h2{margin-top:0;font-size:23px}.card p{line-height:1.9}.stack{display:grid;gap:16px}.row{display:flex;gap:15px;align-items:center;flex-wrap:wrap}.spread{justify-content:space-between}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}label{display:grid;gap:8px;font-size:14px;font-weight:600}input,select,textarea{width:100%;padding:12px;border:1px solid #dddfea;border-radius:11px;background:white;color:#30334b;min-width:0}textarea{min-height:90px;resize:vertical}input[type=checkbox]{width:auto}.check{display:flex;align-items:flex-start;font-size:12px;line-height:1.7;font-weight:400}.check input{margin-top:4px}.captcha{display:flex;gap:10px}.captcha img{width:145px;height:50px;cursor:pointer;border-radius:10px}.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:15px;margin:20px 0}.metric{background:white;border:1px solid var(--line);border-radius:16px;padding:20px}.metric b{font-size:30px;display:block;margin:8px 0}.metric span{color:var(--muted);font-size:13px}.overlay{position:fixed;inset:0;background:#1d173780;backdrop-filter:blur(6px);z-index:70;display:flex;align-items:center;justify-content:center;padding:20px}.dialog{width:560px;max-width:100%;max-height:90dvh;background:#fff;border-radius:24px;display:flex;flex-direction:column;overflow:hidden;box-shadow:0 24px 90px #23163833}.dialog header{padding:24px 28px 18px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line)}.dialog header h2{font-size:22px;margin:0}.dialog .dialog-body{padding:24px 28px;overflow:auto;min-height:0}.dialog footer{padding:18px 28px;border-top:1px solid var(--line);display:flex;gap:12px;justify-content:flex-end;flex-shrink:0;background:#fff}.dialog footer button{white-space:nowrap}.error{color:#bd445c;font-size:13px;margin-top:12px;line-height:1.8}.success{background:#e6f7ee;border-radius:14px;padding:16px;color:#347759;line-height:1.8}.test-note{background:#fff3d8;color:#917026;border-radius:10px;font-size:12px;padding:10px;line-height:1.7}.age-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.age-grid button{border:2px solid var(--line);background:#f8f7fc;border-radius:15px;padding:23px 8px;color:#626582;font-weight:750}.age-grid button.selected{border-color:var(--purple);color:var(--purple);background:#f0eaff}.quiz{max-width:740px;margin:auto}.quiz-term{font-size:42px;text-align:center;font-weight:800;color:#453782;margin:26px 0}.quiz-options{display:grid;gap:13px}.quiz-options button{text-align:left;background:#f6f5fc;border:2px solid #e8e4f4;padding:18px;border-radius:14px;color:#41405f;display:flex;gap:15px}.quiz-options button:hover{border-color:var(--purple)}.quiz-options b{color:#9b8bc9}.quiz-progress{display:flex;gap:8px;margin:16px 0}.quiz-progress i{height:7px;border-radius:8px;flex:1;background:#ebe8f4}.quiz-progress i.done{background:#8f71ed}.celebrate{text-align:center;padding:25px}.celebrate .big{font-size:65px}.celebrate h2{font-size:30px}.celebrate .rewards{font-size:26px;font-weight:800;color:var(--purple);padding:20px;background:#f3efff;border-radius:18px}.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:13px;background:white}table{border-collapse:collapse;width:100%;font-size:13px}th{text-align:left;background:#f7f8fc;color:#7c8097;font-size:12px;padding:14px;white-space:nowrap}td{padding:14px;border-top:1px solid var(--line);max-width:280px;overflow-wrap:anywhere}.actions{position:sticky;right:0;background:white;min-width:180px;white-space:nowrap}.actions button{padding:8px 12px;border-radius:8px;background:#f0ebff;color:#7658c4;white-space:nowrap}.pagination{display:flex;justify-content:flex-end;gap:10px;align-items:center;margin-top:16px;font-size:13px}.pagination select{width:90px}.pagination button{padding:10px;border-radius:8px}.admin .sidebar{width:230px}.admin .shell{grid-template-columns:230px 1fr}.empty{padding:50px;text-align:center;color:var(--muted)}#toast{position:fixed;bottom:30px;left:50%;transform:translateX(-50%);background:#282743;color:white;border-radius:14px;padding:14px 24px;z-index:100;display:none;max-width:90vw}.player-overlay{position:fixed;inset:0;background:#151425;z-index:50;display:flex;flex-direction:column}.player-toolbar{min-height:60px;padding:10px 20px;display:flex;align-items:center;gap:15px;color:white;font-size:13px}.player-toolbar button{border-radius:9px;padding:9px 15px;background:#393351;color:white}.player-toolbar .save-status{margin-left:auto;color:#bcb2d8}.player-overlay iframe{flex:1;border:0;width:100%;min-height:0;background:#bde9fa}.page-footer{font-size:11px;color:#989cb0;padding:30px 0 0;display:flex;gap:20px;justify-content:space-between}.info-row{display:flex;padding:14px 0;border-bottom:1px solid var(--line);justify-content:space-between;gap:15px}.coin{color:#d39825}.power{color:#8770ce}.learning-intro{background:linear-gradient(120deg,#eee9ff,#f9f6ff);padding:36px;border-radius:22px;margin-bottom:25px}.learning-intro h1{font-size:33px;margin:10px 0}.learning-intro p{color:#817895;line-height:1.9}.notice{font-size:13px;color:#8167c6;background:#f1edfe;border-radius:12px;padding:14px;margin-bottom:18px}.full{grid-column:1/-1}
@media(min-width:1500px){.content{padding:40px 60px}.hero{min-height:430px}.hero-copy{padding:55px}.hero h2{font-size:48px}}@media(max-width:1150px){.topbar{padding:0 24px;gap:24px}.shell{grid-template-columns:160px 1fr}.sidebar{padding:24px 10px}.content{padding:25px}.home-grid{grid-template-columns:1fr}.home-grid>aside{display:grid;grid-template-columns:1fr 1fr;gap:20px}.parent-card{margin:0}.hero h2{font-size:33px}.hero-copy{padding:26px}.hero{min-height:340px}.topbar nav{gap:20px}.hero-footer{display:none}}@media(max-width:760px){.topbar{height:72px;padding:0 16px;gap:12px}.topbar nav{display:none}.top-actions{gap:6px}.top-actions .primary{padding:10px 12px;font-size:12px}.brand{font-size:22px}.brand img{width:36px;height:36px}.brand small{font-size:9px}.shell,.admin .shell{display:block}.sidebar{display:none}.content{padding:22px 16px}.greeting{align-items:flex-start}.greeting h1{font-size:21px}.wallet{gap:4px}.pill{padding:9px;font-size:12px}.hero{grid-template-columns:1fr;min-height:0}.hero-copy{padding:28px}.hero h2{font-size:35px;margin:18px 0}.hero-art{max-height:260px;object-position:center 40%}.home-grid>aside{display:block}.parent-card{margin-top:18px}.game-grid{grid-template-columns:1fr}.home-grid{gap:20px}.metrics{grid-template-columns:1fr 1fr}.form-grid{grid-template-columns:1fr}.dialog .dialog-body{padding:20px}.dialog header,.dialog footer{padding:18px 20px}.dialog footer{flex-wrap:wrap}.quiz-term{font-size:32px}.search{width:145px}.page-footer{flex-direction:column;gap:8px}.player-toolbar{flex-wrap:wrap;padding:8px;font-size:11px;gap:7px}.player-toolbar button{padding:7px 10px}.player-toolbar .save-status{margin-left:0}.age-grid{grid-template-columns:1fr 1fr}}
@media(max-width:760px){.topbar:after{content:none}.topbar .top-actions .language{font-size:11px;padding:8px}.content{padding-bottom:85px}.sidebar{display:flex;position:fixed;left:0;right:0;bottom:0;height:65px;z-index:30;flex-direction:row;padding:7px 5px;gap:0;border-top:1px solid var(--line)}.sidebar button{flex:1;padding:9px 2px;font-size:10px;text-align:center;white-space:nowrap}.sidebar .side-title,.sidebar .side-note{display:none}.admin .sidebar{display:none}.admin .content{padding-bottom:25px}}

/* 桌面侧栏保持在顶栏下方，提示贴底；矮窗口可单独滚动侧栏。 */
@media(min-width:761px){
 .shell>.sidebar{position:sticky;top:90px;align-self:start;height:calc(100vh - 90px);height:calc(100dvh - 90px);overflow-y:auto;overscroll-behavior:contain}
 .shell>.sidebar>*{flex-shrink:0}
}