:root{--bg:#f6f5fb;--ink:#1e1b32;--ink-soft:#5b5670;--line:#e7e3f0;--card:#fff;--hero-1:#1b1740;--hero-2:#3b2f7a;--hero-3:#5b3fa0;--gold:#ffd76a;--radius:16px;--shadow:0 6px 24px #281e5014;--shadow-lg:0 18px 50px #281e5038}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,Segoe UI,system-ui,sans-serif;line-height:1.6}a{color:inherit;text-decoration:none}.wrap{max-width:1180px;margin:0 auto;padding:0 20px}.hero{background:radial-gradient(1200px 500px at 80% -10%, var(--hero-3), transparent 60%), linear-gradient(135deg, var(--hero-1), var(--hero-2));color:#fff;padding:30px 0 26px;position:relative;overflow:hidden}.hero:after{content:"";opacity:.55;pointer-events:none;background-image:radial-gradient(1.4px 1.4px at 12% 30%,#fff,#0000),radial-gradient(1.2px 1.2px at 28% 70%,#fff,#0000),radial-gradient(1.6px 1.6px at 47% 22%,#fff,#0000),radial-gradient(1.1px 1.1px at 63% 58%,#fff,#0000),radial-gradient(1.5px 1.5px at 78% 36%,#fff,#0000),radial-gradient(1.2px 1.2px at 91% 64%,#fff,#0000),radial-gradient(1.1px 1.1px at 38% 88%,#fff,#0000);position:absolute;inset:0}.hero-top{z-index:1;flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:20px;display:flex;position:relative}.brand h1{letter-spacing:1px;margin:0;font-size:26px;font-weight:800}.brand .star{color:var(--gold)}.brand p{color:#cfc7f0;margin:6px 0 0;font-size:14px}.search{z-index:1;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);background:#ffffff24;border:1px solid #ffffff40;border-radius:999px;align-items:center;gap:8px;min-width:280px;padding:9px 16px;display:flex;position:relative}.search input{color:#fff;background:0 0;border:none;outline:none;width:100%;font-size:15px}.search input::placeholder{color:#c9c1ec}.search .ic{opacity:.8}.stages{z-index:1;flex-wrap:wrap;gap:10px;margin-top:22px;display:flex;position:relative}.stage-tab{cursor:pointer;color:#e9e4fb;background:#ffffff14;border:1px solid #ffffff38;border-radius:14px;align-items:baseline;gap:10px;padding:12px 18px;transition:all .18s;display:flex}.stage-tab:hover{background:#ffffff29}.stage-tab.on{color:var(--hero-1);box-shadow:var(--shadow);background:#fff;border-color:#fff}.stage-tab .s-name{font-size:18px;font-weight:800}.stage-tab .s-badge{opacity:.8;font-size:12px}.main{padding:26px 0 60px}.stage-desc{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);color:var(--ink-soft);box-shadow:var(--shadow);align-items:flex-start;gap:10px;padding:14px 18px;font-size:14px;display:flex}.stage-desc .tag{color:var(--hero-3);white-space:nowrap;font-weight:700}.grades{flex-wrap:wrap;gap:8px;margin:20px 0 18px;display:flex}.grade-pill{cursor:pointer;border:1px solid var(--line);background:var(--card);color:var(--ink-soft);border-radius:999px;padding:8px 18px;font-size:15px;font-weight:600;transition:all .15s}.grade-pill:hover{border-color:var(--hero-3);color:var(--hero-3)}.grade-pill.on{background:var(--hero-2);color:#fff;border-color:var(--hero-2)}.section-head{align-items:baseline;gap:12px;margin:4px 0 14px;display:flex}.section-head h2{margin:0;font-size:19px}.section-head .count{color:var(--ink-soft);font-size:13px}.grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px;display:grid}.card{cursor:pointer;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px 16px 14px;transition:transform .15s,box-shadow .15s;position:relative;overflow:hidden}.card:before{content:"";background:var(--c,#888);width:5px;position:absolute;top:0;bottom:0;left:0}.card:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px)}.card .c-head{align-items:center;gap:11px;display:flex}.c-icon{color:#fff;background:var(--c,#888);border-radius:12px;flex:none;justify-content:center;align-items:center;width:42px;height:42px;font-size:17px;font-weight:800;display:flex}.c-name{font-size:17px;font-weight:700}.c-en{color:var(--ink-soft);letter-spacing:.5px;font-size:12px}.c-meta{justify-content:space-between;align-items:center;margin-top:12px;display:flex}.c-stat{color:var(--ink-soft);font-size:13px}.c-stat b{color:var(--ink);font-weight:700}.badge{border-radius:999px;padding:3px 9px;font-size:11px;font-weight:700}.badge.live{color:#0a8a4a;background:#e7f7ee}.badge.soon{color:#8a7fb0;background:#f1eef8}.c-app{color:var(--c,#5b3fa0);align-items:center;gap:4px;margin-top:11px;font-size:13px;font-weight:700;display:inline-flex}.ext{margin-top:40px}.ext-grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px;display:grid}.ext-card{background:var(--card);border:1px dashed var(--line);box-shadow:var(--shadow);border-radius:14px;align-items:center;gap:11px;padding:13px 14px;transition:all .15s;display:flex}.ext-card:hover{border-color:var(--c);transform:translateY(-2px)}.ext-card .c-icon{width:38px;height:38px;font-size:14px}.ext-card .e-name{font-size:15px;font-weight:700}.ext-card .e-desc{color:var(--ink-soft);font-size:12px}.overlay{z-index:50;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);background:#14102d80;justify-content:center;align-items:flex-end;padding:0;display:flex;position:fixed;inset:0}@media (width>=720px){.overlay{align-items:center;padding:24px}}.modal{width:100%;max-width:760px;max-height:88vh;box-shadow:var(--shadow-lg);background:#fff;border-radius:20px 20px 0 0;overflow:auto}@media (width>=720px){.modal{border-radius:20px}}.modal-head{z-index:1;border-bottom:1px solid var(--line);background:#fff;align-items:center;gap:14px;padding:20px 22px 14px;display:flex;position:sticky;top:0}.modal-head .c-icon{width:48px;height:48px;font-size:19px}.modal-head .m-title{font-size:21px;font-weight:800}.modal-head .m-sub{color:var(--ink-soft);font-size:13px}.modal-head .close{cursor:pointer;background:var(--bg);width:34px;height:34px;color:var(--ink-soft);border:none;border-radius:10px;margin-left:auto;font-size:18px}.modal-body{padding:18px 22px 26px}.unit{margin-bottom:18px}.unit-name{color:var(--ink);align-items:center;gap:8px;margin-bottom:9px;font-size:15px;font-weight:800;display:flex}.unit-name .dot{background:var(--c);border-radius:3px;width:9px;height:9px}.points{flex-wrap:wrap;gap:8px;display:flex}.point{background:var(--bg);border:1px solid var(--line);color:#3a3550;border-radius:999px;padding:6px 13px;font-size:13.5px}.point-list{flex-direction:column;gap:9px;display:flex}.kp{background:var(--bg);border:1px solid var(--line);border-radius:12px;overflow:hidden}.kp.open{box-shadow:var(--shadow);background:#fff}.kp.kp-bare{padding:11px 14px}.kp-head{text-align:left;cursor:pointer;width:100%;font:inherit;background:0 0;border:none;align-items:center;gap:10px;padding:12px 14px;display:flex}.kp-name{color:var(--ink);flex:none;padding-left:12px;font-size:15px;font-weight:800;position:relative}.kp-name:before{content:"";background:var(--c,#888);border-radius:2px;width:4px;position:absolute;top:3px;bottom:3px;left:0}.kp-sum{color:var(--ink-soft);text-overflow:ellipsis;white-space:nowrap;flex:1;font-size:12.5px;overflow:hidden}.kp-badge{opacity:.85;border:1px solid;border-radius:6px;flex:none;padding:1px 6px;font-size:10.5px;font-weight:800}.kp-chev{color:var(--ink-soft);flex:none;margin-left:auto;font-size:12px}.kp.open .kp-chev{margin-left:0}.lesson{padding:2px 16px 16px}.ls-summary{color:var(--ink);border-left:3px solid var(--gold);background:#fffaf0;border-radius:0 8px 8px 0;margin-bottom:14px;padding:9px 13px;font-size:14.5px;font-weight:600;line-height:1.7}.ls-sec{margin-bottom:13px}.ls-h{color:var(--ink);border-left:3px solid var(--c,#888);margin-bottom:5px;padding-left:10px;font-size:14px;font-weight:800}.ls-text{color:#423d57;margin:0 0 6px;font-size:14px;line-height:1.78}.ls-block{margin:13px 0}.ls-label{letter-spacing:.3px;margin-bottom:7px;font-size:12.5px;font-weight:800}.ls-key{background:#f3f0fb;border-radius:10px;padding:11px 14px}.ls-key ul,.ls-pit ul{margin:0;padding-left:20px}.ls-key li,.ls-pit li{color:#423d57;margin-bottom:3px;font-size:13.5px;line-height:1.7}.ls-eg{border:1px solid var(--line);border-left:4px solid var(--c,#888);background:#fff;border-radius:10px;margin:11px 0;padding:11px 14px}.ls-eg-h{color:var(--c,#888);margin-bottom:6px;font-size:12.5px;font-weight:800}.ls-eg-q{color:var(--ink);margin-bottom:7px;font-size:14px;font-weight:600;line-height:1.7}.ls-eg-s{color:#423d57;white-space:pre-wrap;font-size:13.5px;line-height:1.78}.ls-eg-tag{color:#fff;background:var(--c,#888);vertical-align:1px;border-radius:5px;margin-right:8px;padding:1px 7px;font-size:11px;font-weight:800;display:inline-block}.ls-eg-a{color:var(--ink);margin-top:7px;font-size:13.5px;font-weight:700}.ls-method{background:#eef6ff;border-radius:10px;padding:11px 14px}.ls-pit{background:#fff4f0;border-radius:10px;padding:11px 14px}.ls-pit-label{color:#c2410c}.ls-prac{background:#f0faf4;border-radius:10px;padding:12px 14px}.prac{border:1px solid var(--line);background:#fff;border-radius:9px;margin-bottom:8px;padding:10px 12px}.prac:last-child{margin-bottom:0}.prac-q{color:var(--ink);gap:8px;font-size:13.8px;line-height:1.7;display:flex}.prac-no{color:#fff;border-radius:6px;flex:none;justify-content:center;align-items:center;width:20px;height:20px;font-size:12px;font-weight:800;display:flex}.prac-btn{cursor:pointer;background:0 0;border:none;margin-top:8px;padding:0;font-size:13px;font-weight:700}.prac-a{border-top:1px dashed var(--line);margin-top:9px;padding-top:9px}.prac-ans{color:var(--ink);margin-bottom:5px;font-size:13.5px}.prac-ans b{color:#0a8a4a;margin-right:8px}.prac-exp{color:#5b5670;font-size:13px;line-height:1.72}.ls-ext{background:var(--bg);border-radius:10px;padding:11px 14px}.ls-ext .ls-text{margin:0;font-size:13.5px}.badge.deep{color:#6d28d9;background:#efe9fc}.modal-app{background:var(--c);color:#fff;border-radius:12px;align-items:center;gap:6px;margin-top:6px;padding:10px 18px;font-size:14px;font-weight:700;display:inline-flex}.empty{color:var(--ink-soft);padding:12px 0;font-size:14px}.results{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}.result-row{border-bottom:1px solid var(--line);cursor:pointer;align-items:center;gap:12px;padding:12px 16px;display:flex}.result-row:last-child{border-bottom:none}.result-row:hover{background:var(--bg)}.result-row .r-icon{color:#fff;border-radius:8px;flex:none;justify-content:center;align-items:center;width:30px;height:30px;font-size:13px;font-weight:800;display:flex}.result-row .r-point{font-weight:600}.result-row .r-path{color:var(--ink-soft);white-space:nowrap;margin-left:auto;font-size:12px}.foot{text-align:center;color:var(--ink-soft);padding:24px 0 36px;font-size:12.5px}.note{color:#8a6300;background:#fff7e6;border:1px solid #ffe2a8;border-radius:12px;margin:14px 0 4px;padding:11px 15px;font-size:13px}