:root{--ink: #17233b;--ink-2: #33405a;--muted: #6b778d;--faint: #98a2b6;--bg: #f6f8fc;--surface: #ffffff;--surface-2: #f1f5fb;--surface-3: #e8eef8;--line: #dce5f1;--line-soft: #eaf0f9;--blue: #2f67e8;--blue-dark: #2453c4;--blue-soft: #eaf1fe;--blue-line: #c5d8fb;--violet: #7048e8;--violet-soft: #f1ecfe;--grad-end: #7d6cf7;--ok: #12a37a;--ok-soft: #e6f7f1;--warn: #d97706;--warn-soft: #fef4e6;--danger: #dc2626;--danger-soft: #fdecec;--lv-1: #12a37a;--lv-2: #2f67e8;--lv-3: #7048e8;--lv-4: #d97706;--lv-5: #dc2626;--kw-1: #0f8f6c;--kw-2: #2453c4;--kw-3: #6a41d8;--kw-4: #aa6600;--kw-5: #b02424;--gold: #c98a00;--gold-line: #f0c674;--r-xs: 6px;--r-sm: 9px;--r-md: 12px;--r-lg: 16px;--r-xl: 22px;--r-pill: 999px;--sh-1: 0 1px 2px rgba(23, 35, 59, .06);--sh-2: 0 2px 10px rgba(23, 35, 59, .07);--sh-3: 0 8px 28px rgba(23, 35, 59, .11);--sh-4: 0 18px 50px rgba(23, 35, 59, .18);--font-ui: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "PingFang SC", "Segoe UI", "Microsoft YaHei", 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#3a1a1a;--kw-1: #3fd3a3;--kw-2: #6f97ff;--kw-3: #a184ff;--kw-4: #f7c44a;--kw-5: #f87171;--sh-1: 0 1px 2px rgba(0, 0, 0, .3);--sh-2: 0 2px 12px rgba(0, 0, 0, .35);--sh-3: 0 10px 30px rgba(0, 0, 0, .45);--sh-4: 0 20px 54px rgba(0, 0, 0, .55)}:root[data-theme=rose]{--ink: #3a2e35;--ink-2: #4f4049;--muted: #7e7178;--faint: #a89da5;--bg: #faf6f5;--surface: #ffffff;--surface-2: #f9f3f3;--surface-3: #f2eaeb;--line: #ecdfe1;--line-soft: #f4edee;--blue: #ab5d72;--blue-dark: #8d4a5b;--blue-soft: #fbeff1;--blue-line: #e7ced3;--violet: #8a6a9c;--violet-soft: #f4eef8;--grad-end: #a992b8;--ok: #3f7f6a;--ok-soft: #e9f3ef;--warn: #9c6b21;--warn-soft: #faf1e2;--danger: #b94f52;--danger-soft: #fbecec;--lv-1: #4f9a80;--lv-2: #ab5d72;--lv-3: #8a6a9c;--lv-4: #b8802f;--lv-5: #bd4f53;--kw-1: #3d7a66;--kw-2: #964d61;--kw-3: #765a88;--kw-4: #946c10;--kw-5: #8f2b33;--gold: #9a6c33;--gold-line: #e6d2ae;--r-lg: 18px;--r-xl: 24px;--sh-1: 0 1px 2px rgba(92, 62, 72, .06);--sh-2: 0 2px 10px rgba(92, 62, 72, 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utIn{0%{opacity:0;transform:translate(-50%,10px)}to{opacity:1;transform:translate(-50%)}}@media (max-width: 620px){.update-toast{bottom:calc(78px + env(safe-area-inset-bottom,0px))}}.home-hero{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:20px}.home-hero h1{font-size:22px;font-weight:780;letter-spacing:-.02em}.home-hero p{margin-top:5px;font-size:13px;color:var(--muted)}.home-stats{display:flex;gap:10px}.stat{min-width:86px;padding:10px 14px;text-align:center}.stat b{display:block;font-size:20px;font-weight:780;letter-spacing:-.02em;font-family:var(--font-num)}.stat span{display:block;margin-top:2px;font-size:11.5px;color:var(--muted)}.creator-rail{display:flex;gap:12px;margin-bottom:16px;padding:6px 2px 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a:hover{text-decoration:underline}.me-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:16px;align-items:start}.me-card{padding:20px}.me-card h3{font-size:15px;font-weight:700;margin-bottom:14px}.me-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:9px 0;font-size:13.5px}.me-row+.me-row{border-top:1px solid var(--line-soft)}.me-row .k{color:var(--muted)}.me-row .v{font-weight:600}.heat{display:grid;grid-template-columns:repeat(auto-fill,minmax(13px,1fr));gap:3px}.heat i{aspect-ratio:1;border-radius:3px;background:var(--surface-3)}.heat i[data-l="1"]{background:color-mix(in srgb,var(--blue) 25%,var(--surface-3))}.heat i[data-l="2"]{background:color-mix(in srgb,var(--blue) 50%,var(--surface-3))}.heat i[data-l="3"]{background:color-mix(in srgb,var(--blue) 75%,var(--surface-3))}.heat i[data-l="4"]{background:var(--blue)}@media (max-width: 700px){.course-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.course-card:hover{transform:none;box-shadow:none;border-color:var(--line-soft)}.cc-body{gap:4px;padding:9px 10px 11px}.cc-title{font-size:12.5px;line-height:1.38;min-height:2.76em}.cc-sub{font-size:10.5px}.cc-meta{gap:4px;font-size:10.5px}.cc-tail{gap:4px}.cc-foot{padding-top:6px;gap:5px}.cc-creator{font-size:10.5px;gap:5px}.cc-creator img{width:16px;height:16px}.cc-fav{width:22px;height:22px;font-size:13px}.cc-star{top:5px;right:5px;width:23px;height:23px;font-size:13px;opacity:.9}.cc-duration{right:6px;bottom:6px;padding:1.5px 5px;font-size:10px}.cc-flag{left:6px;top:6px;padding:2px 6px;font-size:10px}}.boot{position:fixed;top:0;right:0;bottom:0;left:0;z-index:300;display:grid;place-items:center;padding:calc(20px + env(safe-area-inset-top,0px)) 20px calc(20px + env(safe-area-inset-bottom,0px));background:radial-gradient(1100px 560px at 50% 34%,var(--blue-soft),transparent 72%),var(--bg);transition:opacity 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18px;font-size:12.5px;line-height:1.6;color:var(--muted)}.boot-bar{height:5px;border-radius:var(--r-pill);background:var(--surface-2);overflow:hidden}.boot-bar>i{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--blue),var(--grad-end));transform-origin:left center;transform:scaleX(0);transition:transform .26s linear}.boot-pct{margin:7px 0 0;font-family:var(--font-num);font-size:11px;color:var(--faint)}.boot-steps{margin:16px 0 0;padding:0;list-style:none;display:grid;gap:9px;text-align:left}.boot-steps li{display:grid;grid-template-columns:13px 1fr auto;align-items:center;gap:8px;font-size:12.5px;color:var(--faint);transition:color var(--dur) var(--ease-out)}.boot-steps li em{font-style:normal;font-size:11.5px;color:var(--faint)}.boot-steps li.is-on{color:var(--ink-2)}.boot-steps li.is-on em{color:var(--ok)}.bs-dot{width:13px;height:13px;border-radius:50%;border:1.5px solid var(--line);background:var(--surface)}.boot-steps li.is-doing .bs-dot{border-color:var(--blue);border-top-color:transparent;animation:bootSpin .8s linear infinite}.boot-steps li.is-on .bs-dot{border-color:var(--ok);background:var(--ok-soft);position:relative}.boot-steps li.is-on .bs-dot:after{content:"";position:absolute;left:3.2px;top:1px;width:4px;height:7px;border:1.6px solid var(--ok);border-top:0;border-left:0;transform:rotate(42deg)}.boot-course{margin:18px 0 0;padding-top:15px;border-top:1px dashed var(--line);display:grid;gap:4px}.boot-course b{font-size:13px;font-weight:650;color:var(--ink)}.boot-course span{font-size:11.5px;color:var(--faint)}.boot-skip{margin-top:14px;height:32px;padding:0 14px;border-radius:var(--r-pill);border:1px solid var(--blue-line);background:var(--blue-soft);color:var(--blue);font-size:12.5px;font-weight:600}@keyframes bootSpin{to{transform:rotate(360deg)}}@media (max-width: 620px){.boot-card{padding:26px 20px 18px}.boot-ring{width:40px;height:40px;margin-bottom:13px}}@media (prefers-reduced-motion: 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0;text-align:center}.modal-head h2{font-size:20px;font-weight:750}.modal-head p{margin-top:7px;font-size:13px;color:var(--muted)}.modal-body{padding:20px 26px 26px;display:flex;flex-direction:column;gap:14px}.modal-close{position:absolute;top:14px;right:14px;width:32px;height:32px;border-radius:50%;color:var(--muted);font-size:18px;line-height:1}.modal-close:hover{background:var(--surface-2);color:var(--ink)}.modal-switch{text-align:center;font-size:13px;color:var(--muted)}.modal-switch .auth-link{margin-left:4px}