.quiz{margin:1.8em 0;padding:18px 18px 16px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);font-size:16px;line-height:1.6}.quiz-head{display:flex;align-items:center;gap:8px}.quiz-badge{padding:2px 10px;border-radius:999px;background:var(--accent);color:#fff;font-size:12.5px;font-weight:800}.quiz-done{font-size:13px;font-weight:700;color:var(--success)}.quiz-q{margin:10px 0 12px!important;font-weight:750;font-size:17px}.quiz-options{display:grid;gap:8px}.quiz-option{display:flex;align-items:flex-start;gap:10px;width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg);text-align:left;cursor:pointer;font-size:15.5px;line-height:1.5;transition:border-color .15s,background .15s}.quiz-option:hover:not(:disabled){border-color:var(--primary)}.quiz-option:disabled{cursor:default}.quiz-no{flex:0 0 24px;height:24px;display:grid;place-items:center;border-radius:50%;background:var(--surface-2);font-size:13px;font-weight:800}.quiz-option.is-answer{border-color:var(--success);background:var(--success-soft)}.quiz-option.is-answer .quiz-no{background:var(--success);color:#fff}.quiz-option.is-wrong{border-color:var(--danger);background:var(--danger-soft)}.quiz-option.is-dim{opacity:.7}.quiz-result{margin-top:12px;padding:10px 14px;border-radius:var(--radius-sm)}.quiz-result.is-correct{background:var(--success-soft)}.quiz-result.is-correct strong{color:var(--success)}.quiz-result.is-incorrect{background:var(--danger-soft)}.quiz-result.is-incorrect strong{color:var(--danger)}.quiz-result p{margin:4px 0 0!important}.quiz code{font-family:var(--font-mono);font-size:.9em;padding:.1em .35em;border-radius:5px;background:var(--surface-2)}.viz{margin:1.8em 0;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow);overflow:hidden;font-size:15px;line-height:1.6}.viz-head{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:10px 16px;border-bottom:1px solid var(--border);background:var(--surface-2)}.viz-head strong{font-size:15.5px}.viz-tag{padding:1px 9px;border-radius:999px;background:var(--primary);color:var(--primary-ink);font-size:12px;font-weight:800}.viz-body{padding:18px}.viz-controls{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}.viz-btn{padding:6px 14px;border-radius:999px;border:1px solid var(--border);background:var(--bg);color:var(--text);font-size:14px;font-weight:700;cursor:pointer}.viz-btn:hover:not(:disabled){border-color:var(--primary)}.viz-btn:disabled{opacity:.5;cursor:default}.viz-btn.is-primary,.viz-btn[aria-pressed=true]{background:var(--primary);border-color:var(--primary);color:var(--primary-ink)}.viz-note{margin:14px 0 0;padding:12px 14px;border-radius:var(--radius-sm);background:var(--primary-soft);font-size:15px}.viz-code{margin:12px 0 0;padding:12px 14px;border-radius:var(--radius-sm);background:var(--code-bg);border:1px solid var(--border);font-family:var(--font-mono);font-size:13.5px;line-height:1.6;white-space:pre-wrap;word-break:break-all}.viz-field{display:grid;gap:4px;font-size:13.5px;font-weight:700;color:var(--muted)}.viz-field select,.viz-field input[type=text],.viz-input{padding:8px 10px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg);font-size:15px;color:var(--text);font-weight:500}.viz-field input[type=range]{width:100%;accent-color:var(--primary)}.url-line{margin:14px 0;padding:14px;border-radius:var(--radius-sm);background:var(--code-bg);border:1px solid var(--border);font-family:var(--font-mono);font-size:16px;line-height:2;word-break:break-all}.url-seg{padding:3px 2px;border-radius:4px;border-bottom:3px solid currentColor}.url-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px}.url-card{padding:12px 14px;border-radius:var(--radius-sm);border:1px solid var(--border);border-left:5px solid currentColor;background:var(--bg)}.url-card strong{display:block;font-size:14.5px}.url-card code{display:block;margin:2px 0 6px;font-family:var(--font-mono);font-size:13.5px;color:var(--text);word-break:break-all}.url-card p{margin:0;color:var(--text);font-size:14px;line-height:1.55}.c-protocol{color:#c2410c}.c-sub{color:#7c3aed}.c-domain{color:#1d4ed8}.c-tld{color:#0f766e}.c-port{color:#b45309}.c-path{color:#be185d}.c-query{color:#15803d}.c-hash{color:#4b5563}[data-theme=dark] .c-protocol{color:#fb923c}[data-theme=dark] .c-sub{color:#c4b5fd}[data-theme=dark] .c-domain{color:#93c5fd}[data-theme=dark] .c-tld{color:#5eead4}[data-theme=dark] .c-port{color:#fcd34d}[data-theme=dark] .c-path{color:#f9a8d4}[data-theme=dark] .c-query{color:#86efac}[data-theme=dark] .c-hash{color:#d1d5db}.url-card .card-text{color:var(--text)}.stage{position:relative;display:grid;grid-template-columns:1fr 1.4fr 1fr;align-items:center;gap:8px;min-height:150px}.actor{padding:14px 10px;border:2px solid var(--border);border-radius:var(--radius);background:var(--bg);text-align:center;line-height:1.4;transition:border-color .2s,box-shadow .2s}.actor .actor-icon{display:block;font-size:32px}.actor small{display:block;color:var(--muted)}.actor.is-active{border-color:var(--primary);box-shadow:0 0 0 4px var(--primary-soft)}.track{position:relative;height:64px}.track:before{content:"";position:absolute;left:0;right:0;top:50%;border-top:2px dashed var(--border)}.envelope{position:absolute;top:50%;transform:translate(-50%,-50%);padding:4px 10px;border-radius:999px;background:var(--accent);color:#fff;font-size:13px;font-weight:800;white-space:nowrap;transition:left .9s ease-in-out}.envelope.is-response{background:var(--success)}.http-messages{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:14px}.http-messages .viz-code{margin:0;min-height:100px}.http-messages h4{margin:0 0 6px;font-size:13.5px;color:var(--muted)}.result-screen{margin-top:14px;border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden}.result-bar{display:flex;align-items:center;gap:6px;padding:6px 10px;background:var(--surface-2);font-family:var(--font-mono);font-size:12.5px;color:var(--muted)}.result-bar i{width:9px;height:9px;border-radius:50%;background:var(--border)}.result-page{padding:18px;min-height:70px;background:#fff;color:#1f2328}.result-page h1{margin:0;font-size:24px;font-family:serif}@media(max-width:600px){.stage{grid-template-columns:1fr 1fr 1fr}.http-messages{grid-template-columns:1fr}.actor .actor-icon{font-size:26px}.actor{font-size:13px}}.dns-actors{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}.dns-actors .actor{font-size:13.5px;padding:10px 6px}.dns-actors .actor .actor-icon{font-size:26px}.dns-bubble{margin-top:14px;padding:14px 16px;border-radius:var(--radius-sm);background:var(--bg);border:1px solid var(--border)}.dns-bubble .dns-route{font-weight:800;color:var(--primary)}.dns-bubble p{margin:6px 0 0}.dns-progress{display:flex;gap:4px;margin-top:12px}.dns-progress span{flex:1;height:5px;border-radius:3px;background:var(--border)}.dns-progress span.is-on{background:var(--primary)}.dns-actors.deploy-actors{grid-template-columns:repeat(4,1fr)}@media(max-width:640px){.dns-actors,.dns-actors.deploy-actors{grid-template-columns:repeat(2,1fr)}}.bm-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:18px;align-items:start}@media(max-width:700px){.bm-grid{grid-template-columns:1fr}}.bm-stage{display:grid;place-items:center;min-height:300px;padding:10px;border-radius:var(--radius-sm);background:var(--bg);border:1px solid var(--border);overflow:auto}.bm-layer{position:relative;font-size:11.5px;font-weight:800;font-family:var(--font-mono)}.bm-layer>.bm-label{position:absolute;top:2px;left:6px;white-space:nowrap}.bm-margin{background:#fde2c4;color:#9a4b00;border:1px dashed #e8a35c}.bm-border{background:#fce88f;color:#7a5c00}.bm-padding{background:#c3ecc9;color:#1e6b2c}.bm-content{display:grid;place-items:center;background:#bcd8f8;color:#134d8a;min-height:44px;text-align:center}.bm-controls{display:grid;gap:12px}.bm-calc{padding:12px 14px;border-radius:var(--radius-sm);background:var(--warn-soft);font-size:14.5px}.bm-check{display:flex;align-items:center;gap:8px;font-size:14.5px;font-weight:600;color:var(--text)}.fx-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:10px;margin-bottom:14px}.fx-stage{min-height:240px;padding:10px;border-radius:var(--radius-sm);border:2px dashed var(--primary);background:var(--primary-soft)}.fx-item{display:grid;place-items:center;min-width:52px;padding:8px 12px;border-radius:8px;background:var(--primary);color:var(--primary-ink);font-weight:800;font-family:var(--font-mono)}.fx-desc{margin:8px 0 0;font-size:14px;color:var(--muted)}.layers-toggles{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}.layer-toggle{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;border:2px solid var(--border);background:var(--bg);font-weight:800;font-size:14.5px;cursor:pointer}.layer-toggle input{width:18px;height:18px;accent-color:var(--primary)}.layer-toggle.l-html{border-color:var(--lang-html)}.layer-toggle.l-css{border-color:var(--lang-css)}.layer-toggle.l-js{border-color:var(--lang-js)}.layers-frame{display:block;width:100%;height:330px;border:1px solid var(--border);border-radius:var(--radius-sm);background:#fff}.dom-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:14px}@media(max-width:700px){.dom-grid{grid-template-columns:1fr}}.dom-grid textarea{width:100%;min-height:240px;padding:12px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--code-bg);font-family:var(--font-mono);font-size:13.5px;line-height:1.6;resize:vertical}.dom-tree{padding:12px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg);font-size:14px;overflow:auto;max-height:360px}.dom-tree ul{list-style:none;margin:0;padding-left:18px;border-left:2px solid var(--border)}.dom-tree>ul{padding-left:0;border-left:0}.dom-tree li{margin:4px 0!important}.dom-node{display:inline-block;padding:1px 8px;border-radius:6px;background:var(--primary-soft);color:var(--primary);font-family:var(--font-mono);font-weight:800;font-size:13px}.dom-attr{color:var(--muted);font-weight:500}.dom-text{color:var(--muted);font-size:13.5px}.prompt-card[data-astro-cid-243l4yxa]{margin:1.4em 0;border:1px solid color-mix(in srgb,var(--primary) 35%,var(--border));border-radius:var(--radius);background:var(--surface);overflow:hidden}figcaption[data-astro-cid-243l4yxa]{display:flex;align-items:center;gap:8px;padding:10px 14px;background:var(--primary-soft);font-size:15px}figcaption[data-astro-cid-243l4yxa] strong[data-astro-cid-243l4yxa]{flex:1}.prompt-copy[data-astro-cid-243l4yxa]{padding:4px 12px;border:1px solid var(--border);border-radius:999px;background:var(--surface);font-size:13px;font-weight:700;cursor:pointer}.prompt-copy[data-astro-cid-243l4yxa]:hover{border-color:var(--primary)}pre[data-astro-cid-243l4yxa]{margin:0!important;padding:14px 16px!important;border:0!important;border-radius:0!important;background:var(--surface)!important;font-family:var(--font-sans)!important;font-size:16px!important;line-height:1.7!important;white-space:pre-wrap;word-break:keep-all}.prompt-note[data-astro-cid-243l4yxa]{margin:0!important;padding:10px 16px 12px;border-top:1px dashed var(--border);color:var(--muted);font-size:14.5px}