.contrasttool__input-area{padding:16px;border-bottom:1px solid var(--color-border)}.contrasttool__input-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;gap:12px;flex-wrap:wrap}.contrasttool__label{font-size:13px;font-weight:500;color:var(--color-text-soft)}.contrasttool__input-row{display:flex;gap:12px;align-items:flex-start;flex-wrap:wrap}.contrasttool__color-field{flex:1;min-width:200px;display:flex;flex-direction:column;gap:6px}.contrasttool__field-label{font-size:12px;font-weight:500;color:var(--color-text-soft)}.contrasttool__field-row{display:flex;gap:8px;align-items:stretch}.contrasttool__picker{width:44px;height:44px;min-width:44px;padding:0;border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-bg);cursor:pointer;overflow:hidden}.contrasttool__picker::-webkit-color-swatch-wrapper{padding:4px}.contrasttool__picker::-webkit-color-swatch{border:none;border-radius:4px}.contrasttool__picker::-moz-color-swatch{border:none;border-radius:4px}.contrasttool__text-input{flex:1;min-width:0;padding:10px 12px;border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-bg);color:var(--color-text);font-family:var(--font-mono, ui-monospace, SFMono-Regular, Menlo, monospace);font-size:13px;line-height:1.6;transition:border-color .15s ease,box-shadow .15s ease}.contrasttool__text-input:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #2b6cff1f}.contrasttool__field-error{margin:0;font-size:11.5px;color:var(--color-error)}.contrasttool__swap-btn{width:44px;height:44px;min-width:44px;margin-top:22px;border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-bg);color:var(--color-text-soft);font-size:18px;font-weight:600;cursor:pointer;transition:all .15s ease}.contrasttool__swap-btn:hover:not(:disabled){border-color:var(--color-primary);color:var(--color-primary);transform:rotate(180deg)}.contrasttool__swap-btn:disabled{opacity:.5;cursor:not-allowed}.contrasttool__result{padding:24px 16px;border-bottom:1px solid var(--color-border);text-align:center}.contrasttool__ratio-box{display:inline-flex;align-items:baseline;gap:8px;margin-bottom:8px}.contrasttool__ratio-value{font-family:var(--font-mono, ui-monospace, SFMono-Regular, Menlo, monospace);font-size:48px;font-weight:700;line-height:1;color:var(--color-text);letter-spacing:-.02em}.contrasttool__ratio-unit{font-size:20px;font-weight:600;color:var(--color-text-soft)}.contrasttool__copy-btn{margin-left:12px;padding:6px 14px;border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-bg);color:var(--color-text-soft);font-size:12px;font-family:inherit;cursor:pointer;transition:all .15s ease;align-self:center}.contrasttool__copy-btn:hover{border-color:var(--color-primary);color:var(--color-primary)}.contrasttool__ratio-hint{margin:0;font-size:12.5px;color:var(--color-text-muted)}.contrasttool__levels{padding:16px;border-bottom:1px solid var(--color-border)}.contrasttool__levels-title{margin:0 0 12px;font-size:16px;font-weight:600}.contrasttool__level-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:10px}.contrasttool__level{padding:12px;border-radius:var(--radius-sm);border:1px solid var(--color-border);background:var(--color-bg);display:flex;flex-direction:column;gap:4px}.contrasttool__level--pass{border-color:#1aaa5566;background:#1aaa550f}.contrasttool__level--fail{border-color:#dc262666;background:#dc26260f}.contrasttool__level-badge{align-self:flex-start;padding:2px 8px;border-radius:999px;font-size:11.5px;font-weight:600}.contrasttool__level--pass .contrasttool__level-badge{background:#1aaa5526;color:var(--color-success)}.contrasttool__level--fail .contrasttool__level-badge{background:#dc262626;color:var(--color-error)}.contrasttool__level-label{font-size:14px;font-weight:600;color:var(--color-text)}.contrasttool__level-desc{font-size:12px;color:var(--color-text-soft);line-height:1.5}.contrasttool__level-threshold{font-size:11.5px;color:var(--color-text-muted);font-family:var(--font-mono, ui-monospace, SFMono-Regular, Menlo, monospace)}.contrasttool__preview{padding:16px;border-bottom:1px solid var(--color-border)}.contrasttool__preview-title{margin:0 0 12px;font-size:16px;font-weight:600}.contrasttool__preview-canvas{padding:20px;border-radius:var(--radius-md);border:1px solid var(--color-border);display:flex;flex-direction:column;gap:10px;align-items:flex-start}.contrasttool__preview-normal{margin:0;font-size:14px;line-height:1.6}.contrasttool__preview-large{margin:0;font-size:18px;line-height:1.5}.contrasttool__preview-link{margin:0;font-size:14px;text-decoration:underline;cursor:pointer}.contrasttool__preview-btn{padding:6px 16px;border:2px solid;border-radius:var(--radius-sm);background:transparent;font-size:13px;font-family:inherit;cursor:pointer;transition:opacity .15s ease}.contrasttool__preview-btn:hover{opacity:.85}.contrasttool__advice{margin:16px;padding:12px 14px;border-radius:var(--radius-sm);background:#ea580c14;border:1px solid rgba(234,88,12,.2);color:var(--color-text);font-size:13px;line-height:1.7}.contrasttool__empty{padding:32px 16px;text-align:center;color:var(--color-text-muted);font-size:13.5px}.contrasttool__notice{margin:12px 16px;padding:8px 14px;border-radius:var(--radius-sm);background:#1aaa5514;color:var(--color-success);font-size:13px;text-align:center}@media(max-width:768px){.contrasttool__input-head{flex-direction:column;align-items:stretch}.contrasttool__input-row{flex-direction:column}.contrasttool__swap-btn{align-self:center;margin-top:0;transform:rotate(90deg)}.contrasttool__swap-btn:hover:not(:disabled){transform:rotate(270deg)}.contrasttool__ratio-value{font-size:36px}.contrasttool__ratio-unit{font-size:16px}.contrasttool__level-list{grid-template-columns:1fr}}