.color-tool{margin:8px 0 24px;color:var(--ink);display:grid;gap:22px}
.color-card{background:var(--white);border:1px solid var(--line);border-radius:18px;padding:clamp(18px,3vw,30px);box-shadow:0 10px 30px #102d3c0c;min-width:0}
.color-card h2{font-size:clamp(1.35rem,2.3vw,1.9rem);line-height:1.2;margin:0 0 8px}
.color-card .eyebrow{color:var(--accent);margin:0 0 8px}
.color-head{display:flex;justify-content:space-between;align-items:start;gap:16px;margin-bottom:16px}
.color-badge{background:var(--accent-soft);color:var(--accent);border-radius:8px;padding:6px 10px;white-space:nowrap;font-weight:700}
.color-hint{color:var(--muted);font-size:.88rem;line-height:1.55;margin:6px 0}
.color-hint code,.color-card p code,.color-learn code{font-family:ui-monospace,"DejaVu Sans Mono",monospace;font-size:.9em;background:var(--soft);border:1px solid var(--line);border-radius:5px;padding:0 4px}
.color-picker{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:28px}
.checker,.color-swatch-wrap,.quiz-swatch{background-color:#fff;background-image:conic-gradient(#d6d9de 25%,#fff 0 50%,#d6d9de 0 75%,#fff 0);background-size:22px 22px}
.color-swatch-wrap{border-radius:16px;overflow:hidden;border:1px solid var(--line)}
.color-swatch{--swatch:#1a5fb4;height:190px;background:var(--swatch)}
.color-slot-line{margin:12px 0 8px;color:var(--muted)}
.color-native{display:inline-flex;align-items:center;gap:10px;font-weight:700;cursor:pointer;margin-bottom:14px}
.color-native input{width:52px;height:40px;border:1px solid var(--field-border);border-radius:8px;background:var(--white);padding:2px;cursor:pointer}
.color-text-label{display:block;font-weight:700;margin-bottom:6px}
.color-text{width:100%;box-sizing:border-box;border:1px solid var(--field-border);border-radius:10px;background:var(--white);color:var(--ink);font:500 1.1rem/1.4 ui-monospace,"DejaVu Sans Mono",monospace;padding:10px 12px}
.color-text:focus{outline:3px solid var(--accent-soft);border-color:var(--accent)}
.color-text[aria-invalid]{border-color:#c2410c}
.color-status{min-height:1.4em;margin:6px 0 0;color:var(--muted);font-size:.9rem}
.color-status.is-error{color:#c2410c;font-weight:600}
:root[data-theme=dark] .color-status.is-error{color:#fb923c}
.color-segment{display:inline-flex;flex-wrap:wrap;border:1px solid var(--field-border);border-radius:10px;overflow:hidden;margin-bottom:6px}
.color-segment label{position:relative;display:inline-flex;align-items:center;gap:8px;padding:8px 14px;cursor:pointer;font-weight:700;font-size:.92rem}
.color-segment label+label{border-left:1px solid var(--field-border)}
.color-segment input{position:absolute;opacity:0;inset:0;margin:0;cursor:pointer}
.color-segment label:has(input:checked){background:var(--accent-soft);color:var(--accent)}
.color-segment label:has(input:focus-visible){outline:3px solid var(--accent);outline-offset:-3px}
.channel{display:grid;grid-template-columns:110px minmax(0,1fr) 90px;align-items:center;gap:12px;margin:14px 0}
.channel label{font-weight:700}
.channel abbr{text-decoration:none;color:var(--muted);font-family:ui-monospace,"DejaVu Sans Mono",monospace}
.channel input[type=range]{width:100%;accent-color:var(--fill,var(--accent));height:28px}
.channel input[type=number]{width:100%;box-sizing:border-box;border:1px solid var(--field-border);border-radius:8px;background:var(--white);color:var(--ink);font:600 1rem ui-monospace,"DejaVu Sans Mono",monospace;padding:7px 8px;text-align:right}
.channel.red label{color:#c0262d}.channel.green label{color:#13803d}.channel.blue label{color:#1d4ed8}
:root[data-theme=dark] .channel.red label{color:#fb7185}:root[data-theme=dark] .channel.green label{color:#4ade80}:root[data-theme=dark] .channel.blue label{color:#7aa2ff}
.color-codes{display:grid;margin:0;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.color-codes div{display:grid;grid-template-columns:minmax(150px,230px) minmax(0,1fr) auto;gap:14px;align-items:center;padding:10px 14px;border-top:1px solid var(--line)}
.color-codes div:first-child{border-top:0}
.color-codes dt{font-weight:700}
.color-codes dd{margin:0;min-width:0}
.color-codes code{display:block;font:600 1.02rem/1.4 ui-monospace,"DejaVu Sans Mono",monospace;overflow-wrap:anywhere}
.color-codes small{display:block;color:var(--muted);font-size:.8rem;margin-top:2px}
.color-button{border:1px solid var(--field-border);border-radius:9px;background:var(--white);color:var(--ink);font:inherit;font-weight:700;padding:9px 14px;cursor:pointer}
.color-button:hover{border-color:var(--accent);color:var(--accent)}
.color-button:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.color-button.small{padding:6px 10px;font-size:.85rem;white-space:nowrap}
.color-button.primary{background:var(--accent);border-color:var(--accent);color:var(--white)}
.color-button.primary:hover{color:var(--white);filter:brightness(1.08)}
.html-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px;align-items:start}
.slot-dot{width:16px;height:16px;border-radius:50%;border:1px solid var(--field-border);display:inline-block}
.html-preview{margin:14px 0;border:1px solid var(--line);border-radius:12px;padding:20px 22px;min-height:150px;font-family:Georgia,"Times New Roman",serif}
.html-preview h3{font-size:1.6rem;margin:0 0 10px;color:inherit}
.html-preview p{margin:0 0 8px;color:inherit;line-height:1.5}
.html-preview a{color:inherit;text-decoration:underline}
.html-preview .small{font-size:.8rem}
.contrast p{margin:0 0 6px}
.contrast strong{font-size:1.3rem}
.contrast ul{list-style:none;margin:0;padding:0;display:grid;gap:4px;font-size:.92rem}
.contrast .pass{color:#13803d}.contrast .fail{color:#b91c1c}
:root[data-theme=dark] .contrast .pass{color:#4ade80}:root[data-theme=dark] .contrast .fail{color:#f87171}
.html-code-head{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:10px;font-weight:700}
.html-code-head select,.names-tools input[type=search]{min-height:40px;border:1px solid var(--field-border);border-radius:8px;background:var(--white);color:var(--ink);padding:6px 10px;font:inherit}
.html-code{margin:0 0 12px;background:#0f1b2a;color:#d8e6f5;border-radius:12px;padding:16px;overflow:auto;font:.92rem/1.6 ui-monospace,"DejaVu Sans Mono",monospace;white-space:pre}
.names-tools{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;margin-bottom:14px;font-weight:700}
.names-tools input[type=search]{min-width:min(100%,240px)}
.color-check{display:inline-flex;align-items:center;gap:8px;cursor:pointer}
.color-check input{width:18px;height:18px;accent-color:var(--accent)}
.names-grid{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:8px;max-height:520px;overflow:auto}
.name-chip{display:flex;align-items:center;gap:10px;width:100%;text-align:left;border:1px solid var(--line);border-radius:10px;background:var(--white);color:var(--ink);padding:7px 9px;cursor:pointer;font:inherit}
.name-chip:hover{border-color:var(--accent)}
.name-chip:focus-visible{outline:3px solid var(--accent);outline-offset:1px}
.name-swatch{flex:none;width:34px;height:34px;border-radius:8px;border:1px solid #0003}
.name-label{display:grid;min-width:0}
.name-label strong{font-size:.92rem;overflow-wrap:anywhere}
.name-label small{color:var(--muted);font:.78rem ui-monospace,"DejaVu Sans Mono",monospace}
.quiz{display:grid;grid-template-columns:minmax(160px,280px) minmax(0,1fr);gap:24px;align-items:start}
.quiz-swatch{height:200px;border-radius:16px;border:1px solid var(--line)}
.quiz-form label[for=quiz-guess]{display:block;font-weight:700;margin:10px 0 6px}
.quiz-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.quiz-feedback{margin-top:14px;min-height:1.5em}
.quiz-feedback p{margin:0 0 8px;font-weight:600}
.quiz-feedback.is-ok p{color:#13803d}.quiz-feedback.is-close p{color:#b45309}.quiz-feedback.is-error{color:#c2410c;font-weight:600}
:root[data-theme=dark] .quiz-feedback.is-ok p{color:#4ade80}:root[data-theme=dark] .quiz-feedback.is-close p{color:#fbbf24}
.quiz-compare{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font:.92rem ui-monospace,"DejaVu Sans Mono",monospace}
.quiz-mini{width:28px;height:28px;border-radius:6px;border:1px solid #0003;display:inline-block}
.quiz-compare span:nth-child(2){margin-right:14px}
.color-learn-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px;margin-top:12px}
.color-learn-grid div{background:var(--soft);border-left:4px solid var(--accent);border-radius:9px;padding:16px}
.color-learn h3{font-size:1.05rem;margin:0 0 6px}
.color-learn p{color:var(--muted);line-height:1.65;margin:0}
@media (max-width:900px){.color-picker,.html-layout,.quiz{grid-template-columns:1fr}.color-codes div{grid-template-columns:minmax(0,1fr) auto}.color-codes dd{grid-column:1/-1;grid-row:2}}
@media (max-width:520px){.channel{grid-template-columns:72px minmax(0,1fr) 70px;gap:8px}.color-swatch{height:140px}.quiz-swatch{height:150px}}