.prose-chapter.svelte-1mb2pk1 *{box-sizing:border-box}.prose-chapter.svelte-1mb2pk1 h1{letter-spacing:-.025em;color:var(--sc-text);margin-top:0;margin-bottom:.5em;font-size:2rem;font-weight:800;line-height:1.2}.prose-chapter.svelte-1mb2pk1 h2{letter-spacing:-.02em;color:var(--sc-text);border-bottom:1px solid var(--sc-border);margin-top:2.5em;margin-bottom:.6em;padding-bottom:.4em;scroll-margin-top:90px;font-size:1.5rem;font-weight:750;line-height:1.3}.prose-chapter.svelte-1mb2pk1 h3{letter-spacing:-.015em;color:var(--sc-text);margin-top:2em;margin-bottom:.5em;scroll-margin-top:90px;font-size:1.2rem;font-weight:700;line-height:1.35}.prose-chapter.svelte-1mb2pk1 h4,.prose-chapter.svelte-1mb2pk1 h5,.prose-chapter.svelte-1mb2pk1 h6{color:var(--sc-text);margin-top:1.5em;margin-bottom:.4em;font-size:1rem;font-weight:700;line-height:1.4}.prose-chapter.svelte-1mb2pk1 p{color:var(--sc-text-2);word-break:break-word;margin-top:0;margin-bottom:1.15em;font-size:1.0625rem;line-height:1.8}.prose-chapter.svelte-1mb2pk1 ul,.prose-chapter.svelte-1mb2pk1 ol{margin-top:.25em;margin-bottom:1.25em;padding-left:1.6em}.prose-chapter.svelte-1mb2pk1 li{color:var(--sc-text-2);margin-bottom:.5em;font-size:1.0625rem;line-height:1.75}.prose-chapter.svelte-1mb2pk1 li:last-child{margin-bottom:0}.prose-chapter.svelte-1mb2pk1 ul li::marker{color:var(--sc-brand)}.prose-chapter.svelte-1mb2pk1 ol li::marker{color:var(--sc-brand);font-weight:700}.prose-chapter.svelte-1mb2pk1 strong{color:var(--sc-text);font-weight:700}.prose-chapter.svelte-1mb2pk1 code:not(.hljs):not([class*=language-]){background:color-mix(in srgb, var(--sc-brand) 8%, transparent);color:var(--sc-brand-ink);vertical-align:baseline;-webkit-font-smoothing:antialiased;border-radius:6px;padding:.15em .4em;font-family:SF Mono,Fira Code,JetBrains Mono,ui-monospace,monospace;font-size:.875em;font-weight:600;display:inline}.prose-chapter.svelte-1mb2pk1 .code-card{background:#0d1117;border:1px solid #f0f6fc14;border-radius:14px;margin-top:.75em;margin-bottom:1.5em;overflow:hidden;box-shadow:0 0 0 1px #00000008,0 2px 4px #0000000a,0 8px 16px #0000000a}.prose-chapter.svelte-1mb2pk1 .code-card-head{background:#161b22;border-bottom:1px solid #f0f6fc0f;align-items:center;gap:8px;padding:8px 14px;display:flex}.prose-chapter.svelte-1mb2pk1 .code-dot{border-radius:999px;flex-shrink:0;width:9px;height:9px}.prose-chapter.svelte-1mb2pk1 .code-lang{letter-spacing:.05em;text-transform:uppercase;color:#8b949e;font-size:11px;font-weight:700}.prose-chapter.svelte-1mb2pk1 .code-copy-btn,.prose-chapter.svelte-1mb2pk1 .code-try-btn{color:#8b949e;cursor:pointer;background:#f0f6fc0a;border:1px solid #f0f6fc1f;border-radius:7px;align-items:center;gap:5px;padding:4px 10px;font-size:11px;font-weight:600;transition:color .15s,border-color .15s,background .15s;display:inline-flex}.prose-chapter.svelte-1mb2pk1 .code-copy-btn:hover,.prose-chapter.svelte-1mb2pk1 .code-try-btn:hover{color:#e6edf3;background:#f0f6fc14;border-color:#f0f6fc47}.prose-chapter.svelte-1mb2pk1 .code-try-btn{color:#7ee787;border-color:#3fb95059;margin-left:auto}.prose-chapter.svelte-1mb2pk1 .code-try-btn:hover{color:#aff5b4;background:#3fb9501a;border-color:#3fb95099}.prose-chapter.svelte-1mb2pk1 .code-copy-btn.copied{color:#3fb950;border-color:#3fb95066}.prose-chapter.svelte-1mb2pk1 .code-card pre{background:0 0;border-radius:0;margin:0;padding:16px 18px;font-size:13.5px;line-height:1.65;overflow-x:auto}.prose-chapter.svelte-1mb2pk1 code.hljs{background:0 0;padding:0}.prose-chapter.svelte-1mb2pk1 .code-card pre::-webkit-scrollbar{height:6px}.prose-chapter.svelte-1mb2pk1 .code-card pre::-webkit-scrollbar-thumb{background:#30363d;border-radius:3px}.prose-chapter.svelte-1mb2pk1 .code-card pre::-webkit-scrollbar-track{background:0 0}.prose-chapter.svelte-1mb2pk1 blockquote{color:var(--sc-text-2);border:1px solid;border-radius:12px;margin:1.25em 0;padding:16px 18px;font-size:.975rem;line-height:1.7}.prose-chapter.svelte-1mb2pk1 blockquote p{font-size:inherit;line-height:inherit;margin-bottom:.5em}.prose-chapter.svelte-1mb2pk1 blockquote p:last-child{margin-bottom:0}.prose-chapter.svelte-1mb2pk1 .callout-note{background:color-mix(in srgb, var(--sc-brand) 5%, var(--sc-bg));border-color:color-mix(in srgb, var(--sc-brand) 18%, transparent)}.prose-chapter.svelte-1mb2pk1 .callout-tip{background:color-mix(in srgb, var(--sc-success,#059669) 5%, var(--sc-bg));border-color:color-mix(in srgb, var(--sc-success,#059669) 18%, transparent)}.prose-chapter.svelte-1mb2pk1 .callout-warning{background:color-mix(in srgb, #f59e0b 6%, var(--sc-bg));border-color:#f59e0b33}.prose-chapter.svelte-1mb2pk1 .callout-info{background:color-mix(in srgb, var(--sc-brand) 4%, var(--sc-bg));border-color:color-mix(in srgb, var(--sc-brand) 14%, transparent)}.prose-chapter.svelte-1mb2pk1 .table-wrap{-webkit-overflow-scrolling:touch;border:1px solid var(--sc-border);border-radius:12px;margin:1em 0 1.5em;overflow-x:auto}.prose-chapter.svelte-1mb2pk1 table{border-collapse:collapse;width:100%;font-size:.9375rem}.prose-chapter.svelte-1mb2pk1 thead{background:var(--sc-surface-2)}.prose-chapter.svelte-1mb2pk1 th{letter-spacing:.03em;text-transform:uppercase;color:var(--sc-text-3);text-align:left;border-bottom:1px solid var(--sc-border);white-space:nowrap;padding:10px 14px;font-size:.8125rem;font-weight:700}.prose-chapter.svelte-1mb2pk1 td{border-bottom:1px solid color-mix(in srgb, var(--sc-border) 50%, transparent);color:var(--sc-text-2);padding:10px 14px;line-height:1.6}.prose-chapter.svelte-1mb2pk1 tbody tr:last-child td{border-bottom:none}.prose-chapter.svelte-1mb2pk1 tbody tr:hover{background:color-mix(in srgb, var(--sc-brand) 3%, transparent)}.prose-chapter.svelte-1mb2pk1 hr{background:var(--sc-border);border:none;height:1px;margin:2.5em 0}.prose-chapter.svelte-1mb2pk1 img{border-radius:10px;max-width:100%;height:auto;margin-top:.5em}.prose-chapter.svelte-1mb2pk1 sup{vertical-align:super;font-size:.75em}.prose-chapter.svelte-1mb2pk1 sub{vertical-align:sub;font-size:.75em}.prose-chapter.svelte-1mb2pk1 kbd{color:var(--sc-text-2);background:var(--sc-surface-2);border:1px solid var(--sc-border);box-shadow:0 1px 0 var(--sc-border);border-radius:6px;padding:2px 7px;font-family:inherit;font-size:.8125rem;font-weight:600;display:inline-block}.code-font.svelte-1vn0bwp{tab-size:2;white-space:pre;word-wrap:normal;overflow-wrap:normal;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,Liberation Mono,monospace;font-size:12.5px;line-height:1.6}textarea.code-font.svelte-1vn0bwp::selection{background:#2563eb66}.quiz-box.svelte-1ey5a2w{border:1.5px solid var(--sc-border);background:var(--sc-surface);box-shadow:var(--sc-shadow);border-radius:16px;margin-top:2.5rem;overflow:hidden}.quiz-head.svelte-1ey5a2w{background:color-mix(in srgb, var(--sc-brand) 5%, transparent);border-bottom:1px solid var(--sc-border);align-items:center;gap:12px;padding:16px 20px;display:flex}.q-card.svelte-1ey5a2w{border-bottom:1px solid var(--sc-border);gap:12px;padding:16px 20px;display:flex}.q-card.svelte-1ey5a2w:last-of-type{border-bottom:none}.q-badge.svelte-1ey5a2w{background:var(--sc-surface-2);width:28px;height:28px;color:var(--sc-text-3);border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;font-size:12px;font-weight:800;display:flex}.q-badge.correct.svelte-1ey5a2w{color:#16a34a;background:#22c55e26}.q-badge.wrong.svelte-1ey5a2w{color:#dc2626;background:#ef444426}.opt-btn.svelte-1ey5a2w{border:1.5px solid var(--sc-border);background:var(--sc-bg);cursor:pointer;text-align:left;width:100%;color:var(--sc-text-2);border-radius:10px;align-items:center;gap:10px;padding:10px 14px;font-size:13px;line-height:1.4;transition:all .15s;display:flex}.opt-btn.svelte-1ey5a2w:hover:not(:disabled){border-color:var(--sc-border-strong);transform:translateY(-1px);box-shadow:0 2px 8px #0000000f}.opt-btn.svelte-1ey5a2w:disabled{cursor:default}.opt-btn.correct-answer.svelte-1ey5a2w{color:#16a34a;background:#22c55e1a;border-color:#22c55e;font-weight:600}.opt-btn.wrong-answer.svelte-1ey5a2w{color:#dc2626;background:#ef444414;border-color:#ef4444}.opt-letter.svelte-1ey5a2w{background:var(--sc-surface-2);width:24px;height:24px;color:var(--sc-text-3);border-radius:6px;flex-shrink:0;justify-content:center;align-items:center;font-size:11px;font-weight:800;display:flex}.letter-correct.svelte-1ey5a2w{color:#fff;background:#22c55e}.letter-wrong.svelte-1ey5a2w{color:#fff;background:#ef4444}.explanation.svelte-1ey5a2w{border-radius:8px;gap:6px;margin-top:10px;padding:10px 14px;font-size:12.5px;line-height:1.5;display:flex}.correct-expl.svelte-1ey5a2w{color:#166534;background:#22c55e14;border:1px solid #22c55e33}.wrong-expl.svelte-1ey5a2w{color:#991b1b;background:#ef44440f;border:1px solid #ef444426}.score-bar.svelte-1ey5a2w{background:color-mix(in srgb, var(--sc-brand) 5%, transparent);border-top:1px solid var(--sc-border);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;padding:16px 20px;display:flex}.reset-btn.svelte-1ey5a2w{border:1px solid var(--sc-border);background:var(--sc-bg);color:var(--sc-text-2);cursor:pointer;border-radius:8px;align-items:center;gap:6px;padding:6px 14px;font-size:12px;font-weight:700;display:inline-flex}.reset-btn.svelte-1ey5a2w:hover{border-color:var(--sc-border-strong)}