/* ============================================
   NoirUI — 毛玻璃质感 · 黑白简约 · 动效优美
   ============================================ */

/* ========== 1. CSS 自定义属性 ========== */
:root {
    /* --- 基础色调 --- */
    --noir-white: #ffffff;
    --noir-black: #0d0d0d;
    --noir-gray-50: #fafafa;
    --noir-gray-100: #f5f5f5;
    --noir-gray-150: #eeeeee;
    --noir-gray-200: #e5e5e5;
    --noir-gray-300: #d4d4d4;
    --noir-gray-400: #a3a3a3;
    --noir-gray-500: #737373;
    --noir-gray-600: #525252;
    --noir-gray-700: #404040;
    --noir-gray-800: #262626;
    --noir-gray-850: #1a1a1a;
    --noir-gray-900: #171717;
    --noir-gray-950: #0a0a0a;

    /* --- 毛玻璃语义色 --- */
    --noir-bg-primary: rgba(255,255,255,0.72);
    --noir-bg-secondary: rgba(250,250,250,0.64);
    --noir-bg-tertiary: rgba(245,245,245,0.55);
    --noir-bg-elevated: rgba(255,255,255,0.78);
    --noir-bg-inverse: rgba(13,13,13,0.88);
    --noir-text-primary: #1a1a1a;
    --noir-text-secondary: #525252;
    --noir-text-tertiary: #8c8c8c;
    --noir-text-inverse: #f0f0f0;
    --noir-border-light: rgba(0,0,0,0.08);
    --noir-border-medium: rgba(0,0,0,0.14);
    --noir-border-strong: rgba(0,0,0,0.3);
    --noir-accent: #0d0d0d;
    --noir-accent-hover: #404040;
    --noir-accent-subtle: rgba(0,0,0,0.05);

    /* --- 圆角 --- */
    --noir-radius-xs: 6px;
    --noir-radius-sm: 8px;
    --noir-radius-md: 12px;
    --noir-radius-lg: 16px;
    --noir-radius-xl: 20px;
    --noir-radius-2xl: 24px;
    --noir-radius-full: 9999px;

    /* --- 阴影层级 --- */
    --noir-shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --noir-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --noir-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06), 0 2px 4px rgba(0, 0, 0, 0.04);
    --noir-shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.08), 0 4px 8px rgba(0, 0, 0, 0.04);
    --noir-shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.1), 0 8px 16px rgba(0, 0, 0, 0.04);
    --noir-shadow-inset: inset 0 2px 4px rgba(0, 0, 0, 0.06);
    --noir-shadow-glow: 0 0 0 3px rgba(13, 13, 13, 0.1);
    --noir-shadow-glow-lg: 0 0 0 6px rgba(13, 13, 13, 0.06);

    /* --- 间距 --- */
    --noir-space-1: 4px;
    --noir-space-2: 8px;
    --noir-space-3: 12px;
    --noir-space-4: 16px;
    --noir-space-5: 20px;
    --noir-space-6: 24px;
    --noir-space-8: 32px;
    --noir-space-10: 40px;
    --noir-space-12: 48px;
    --noir-space-16: 64px;
    --noir-space-20: 80px;
    --noir-space-24: 96px;

    /* --- 字体 --- */
    --noir-font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --noir-font-mono: "SF Mono", "JetBrains Mono", "Fira Code", "Cascadia Code", Consolas, monospace;
    --noir-font-size-xs: 0.75rem;
    --noir-font-size-sm: 0.875rem;
    --noir-font-size-base: 1rem;
    --noir-font-size-lg: 1.125rem;
    --noir-font-size-xl: 1.25rem;
    --noir-font-size-2xl: 1.5rem;
    --noir-font-size-3xl: 1.875rem;
    --noir-font-size-4xl: 2.25rem;
    --noir-font-size-5xl: 3rem;
    --noir-line-height-tight: 1.2;
    --noir-line-height-normal: 1.5;
    --noir-line-height-relaxed: 1.7;
    --noir-font-weight-normal: 400;
    --noir-font-weight-medium: 500;
    --noir-font-weight-semibold: 600;
    --noir-font-weight-bold: 700;

    /* --- 过渡 --- */
    --noir-transition-fast: 120ms cubic-bezier(0.4, 0, 0.2, 1);
    --noir-transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --noir-transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    --noir-transition-spring: 400ms cubic-bezier(0.34, 1.56, 0.64, 1);
    --noir-transition-ease-out-expo: 500ms cubic-bezier(0.16, 1, 0.3, 1);

    /* --- 其他 --- */
    --noir-blur-sm: 8px;
    --noir-blur-md: 16px;
    --noir-blur-lg: 24px;
    --noir-max-width: 768px;
    --noir-max-width-wide: 1024px;
}

/* ========== 暗色毛玻璃模式 ========== */
.noir-dark,
[data-theme="dark"] {
    --noir-bg-primary: rgba(10,10,10,0.82);
    --noir-bg-secondary: rgba(18,18,18,0.74);
    --noir-bg-tertiary: rgba(23,23,23,0.65);
    --noir-bg-elevated: rgba(18,18,18,0.8);
    --noir-bg-inverse: rgba(255,255,255,0.9);
    --noir-text-primary: #e5e5e5;
    --noir-text-secondary: #a3a3a3;
    --noir-text-tertiary: #737373;
    --noir-text-inverse: #1a1a1a;
    --noir-border-light: rgba(255,255,255,0.07);
    --noir-border-medium: rgba(255,255,255,0.13);
    --noir-border-strong: rgba(255,255,255,0.28);
    --noir-accent: #e5e5e5;
    --noir-accent-hover: #a3a3a3;
    --noir-accent-subtle: rgba(255,255,255,0.05);
    --noir-shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.3);
    --noir-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4), 0 1px 2px rgba(0, 0, 0, 0.3);
    --noir-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4), 0 2px 4px rgba(0, 0, 0, 0.3);
    --noir-shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.5), 0 4px 8px rgba(0, 0, 0, 0.3);
    --noir-shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.6), 0 8px 16px rgba(0, 0, 0, 0.3);
    --noir-shadow-inset: inset 0 2px 4px rgba(0, 0, 0, 0.3);
    --noir-shadow-glow: 0 0 0 3px rgba(255, 255, 255, 0.15);
    --noir-shadow-glow-lg: 0 0 0 6px rgba(255, 255, 255, 0.08);
}

/* ========== 2. CSS 重置 ========== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    scroll-behavior: smooth;
}

body {
    font-family: var(--noir-font-sans);
    font-size: var(--noir-font-size-base);
    line-height: var(--noir-line-height-normal);
    color: var(--noir-text-primary);
    background-color: transparent;
    transition: color var(--noir-transition-slow);
    min-height: 100vh;
}

img,
svg,
video {
    display: block;
    max-width: 100%;
    height: auto;
}

a {
    color: inherit;
    text-decoration: none;
}

ul,
ol {
    list-style: none;
}

button,
input,
select,
textarea {
    font-family: inherit;
    font-size: inherit;
    line-height: inherit;
    color: inherit;
    border: none;
    background: none;
    outline: none;
}

button {
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

/* ========== 3. 排版系统 ========== */
.noir-h1,
.noir-h2,
.noir-h3,
.noir-h4,
.noir-h5,
.noir-h6 {
    font-weight: var(--noir-font-weight-semibold);
    line-height: var(--noir-line-height-tight);
    letter-spacing: -0.02em;
    color: var(--noir-text-primary);
}

.noir-h1 {
    font-size: var(--noir-font-size-5xl);
    letter-spacing: -0.03em;
}

.noir-h2 {
    font-size: var(--noir-font-size-4xl);
    letter-spacing: -0.025em;
}

.noir-h3 {
    font-size: var(--noir-font-size-3xl);
}

.noir-h4 {
    font-size: var(--noir-font-size-2xl);
}

.noir-h5 {
    font-size: var(--noir-font-size-xl);
}

.noir-h6 {
    font-size: var(--noir-font-size-lg);
}

.noir-text-xs {
    font-size: var(--noir-font-size-xs);
}

.noir-text-sm {
    font-size: var(--noir-font-size-sm);
}

.noir-text-base {
    font-size: var(--noir-font-size-base);
}

.noir-text-lg {
    font-size: var(--noir-font-size-lg);
}

.noir-text-xl {
    font-size: var(--noir-font-size-xl);
}

.noir-text-secondary {
    color: var(--noir-text-secondary);
}

.noir-text-tertiary {
    color: var(--noir-text-tertiary);
}

.noir-text-inverse {
    color: var(--noir-text-inverse);
}

.noir-font-mono {
    font-family: var(--noir-font-mono);
}

.noir-font-medium {
    font-weight: var(--noir-font-weight-medium);
}

.noir-font-semibold {
    font-weight: var(--noir-font-weight-semibold);
}

.noir-font-bold {
    font-weight: var(--noir-font-weight-bold);
}

.noir-leading-tight {
    line-height: var(--noir-line-height-tight);
}

.noir-leading-relaxed {
    line-height: var(--noir-line-height-relaxed);
}

/* ========== 4. 按钮系统 ========== */
.noir-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--noir-space-2);
    padding: 10px 20px;
    font-size: var(--noir-font-size-sm);
    font-weight: var(--noir-font-weight-medium);
    line-height: 1;
    border-radius: var(--noir-radius-full);
    cursor: pointer;
    user-select: none;
    white-space: nowrap;
    transition:
        background-color var(--noir-transition-base),
        color var(--noir-transition-base),
        box-shadow var(--noir-transition-base),
        transform var(--noir-transition-fast),
        border-color var(--noir-transition-base);
    position: relative;
    overflow: hidden;
    -webkit-tap-highlight-color: transparent;
}

/* 按钮涟漪效果 */
.noir-btn::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    opacity: 0;
    background: radial-gradient(circle at center, currentColor 0%, transparent 70%);
    transition: opacity var(--noir-transition-fast);
}

.noir-btn:active::after {
    opacity: 0.08;
    transition: opacity 0ms;
}

/* 主按钮 */
.noir-btn-primary {
    background-color: var(--noir-accent);
    color: var(--noir-text-inverse);
    border: 1px solid var(--noir-accent);
    box-shadow: var(--noir-shadow-sm);
}

.noir-btn-primary:hover {
    background-color: var(--noir-accent-hover);
    border-color: var(--noir-accent-hover);
    box-shadow: var(--noir-shadow-md);
    transform: translateY(-1px);
}

.noir-btn-primary:active {
    transform: translateY(0);
    box-shadow: var(--noir-shadow-xs);
}

/* 次要按钮 */
.noir-btn-secondary {
    background-color: var(--noir-bg-elevated);
    color: var(--noir-text-primary);
    border: 1px solid var(--noir-border-light);
    box-shadow: var(--noir-shadow-xs);
}

.noir-btn-secondary:hover {
    background-color: var(--noir-bg-tertiary);
    border-color: var(--noir-border-medium);
    box-shadow: var(--noir-shadow-sm);
    transform: translateY(-1px);
}

.noir-btn-secondary:active {
    transform: translateY(0);
    background-color: var(--noir-gray-150);
}

/* 幽灵按钮 */
.noir-btn-ghost {
    background-color: transparent;
    color: var(--noir-text-primary);
    border: 1px solid transparent;
}

.noir-btn-ghost:hover {
    background-color: var(--noir-accent-subtle);
    border-color: var(--noir-border-light);
}

.noir-btn-ghost:active {
    background-color: var(--noir-gray-150);
}

/* 文字按钮 */
.noir-btn-text {
    background-color: transparent;
    color: var(--noir-text-secondary);
    border: none;
    padding: 8px 12px;
    border-radius: var(--noir-radius-sm);
}

.noir-btn-text:hover {
    color: var(--noir-text-primary);
    background-color: var(--noir-accent-subtle);
}

/* 按钮尺寸 */
.noir-btn-sm {
    padding: 6px 14px;
    font-size: var(--noir-font-size-xs);
    border-radius: var(--noir-radius-full);
}

.noir-btn-lg {
    padding: 14px 28px;
    font-size: var(--noir-font-size-base);
    border-radius: var(--noir-radius-full);
}

.noir-btn-xl {
    padding: 16px 36px;
    font-size: var(--noir-font-size-lg);
    border-radius: var(--noir-radius-full);
}

/* 图标按钮 */
.noir-btn-icon {
    width: 38px;
    height: 38px;
    padding: 0;
    border-radius: var(--noir-radius-full);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.noir-btn-icon.noir-btn-sm {
    width: 30px;
    height: 30px;
}

.noir-btn-icon.noir-btn-lg {
    width: 46px;
    height: 46px;
}

/* 禁用状态 */
.noir-btn:disabled,
.noir-btn[disabled] {
    opacity: 0.45;
    cursor: not-allowed;
    pointer-events: none;
    filter: grayscale(20%);
}

/* 加载状态 */
.noir-btn-loading {
    pointer-events: none;
    position: relative;
    color: transparent !important;
}

.noir-btn-loading::before {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: noir-spin 0.6s linear infinite;
}

/* ========== 5. 表单元素 ========== */
.noir-input,
.noir-textarea,
.noir-select {
    width: 100%;
    padding: 10px 14px;
    font-size: var(--noir-font-size-sm);
    background-color: var(--noir-bg-tertiary);
    backdrop-filter: blur(8px) saturate(110%) contrast(1.03);
    -webkit-backdrop-filter: blur(8px) saturate(110%) contrast(1.03);
    border: 1px solid var(--noir-border-light);
    border-radius: var(--noir-radius-md);
    color: var(--noir-text-primary);
    box-shadow: inset 0 1px 2px rgba(0,0,0,0.04);
    transition:
        border-color var(--noir-transition-base),
        box-shadow var(--noir-transition-base),
        background-color var(--noir-transition-base);
}

.noir-input::placeholder,
.noir-textarea::placeholder {
    color: var(--noir-text-tertiary);
}

.noir-input:hover,
.noir-textarea:hover,
.noir-select:hover {
    border-color: var(--noir-border-medium);
}

.noir-input:focus,
.noir-textarea:focus,
.noir-select:focus {
    border-color: var(--noir-border-strong);
    box-shadow: var(--noir-shadow-glow);
    background-color: var(--noir-bg-elevated);
}

.noir-input:focus-visible,
.noir-textarea:focus-visible {
    outline: 2px solid var(--noir-gray-800);
    outline-offset: 2px;
    border-color: transparent;
}

.noir-textarea {
    min-height: 100px;
    resize: vertical;
    line-height: var(--noir-line-height-relaxed);
}

.noir-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23737373' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
    cursor: pointer;
}

/* 输入框尺寸 */
.noir-input-sm {
    padding: 6px 10px;
    font-size: var(--noir-font-size-xs);
    border-radius: var(--noir-radius-sm);
}

.noir-input-lg {
    padding: 14px 18px;
    font-size: var(--noir-font-size-base);
    border-radius: var(--noir-radius-lg);
}

/* 表单标签 */
.noir-label {
    display: block;
    font-size: var(--noir-font-size-sm);
    font-weight: var(--noir-font-weight-medium);
    color: var(--noir-text-primary);
    margin-bottom: var(--noir-space-2);
}

.noir-label-required::after {
    content: ' *';
    color: var(--noir-gray-600);
    font-weight: var(--noir-font-weight-normal);
}

/* 表单组 */
.noir-form-group {
    margin-bottom: var(--noir-space-5);
}

.noir-form-hint {
    font-size: var(--noir-font-size-xs);
    color: var(--noir-text-tertiary);
    margin-top: var(--noir-space-1);
}

.noir-form-error {
    font-size: var(--noir-font-size-xs);
    color: #dc2626;
    margin-top: var(--noir-space-1);
    display: flex;
    align-items: center;
    gap: var(--noir-space-1);
}

/* 复选框 & 单选框 */
.noir-checkbox,
.noir-radio {
    display: inline-flex;
    align-items: center;
    gap: var(--noir-space-2);
    cursor: pointer;
    font-size: var(--noir-font-size-sm);
    user-select: none;
}

.noir-checkbox input,
.noir-radio input {
    appearance: none;
    width: 18px;
    height: 18px;
    border: 1.5px solid var(--noir-border-medium);
    background-color: var(--noir-bg-elevated);
    cursor: pointer;
    transition: all var(--noir-transition-fast);
    flex-shrink: 0;
}

.noir-checkbox input {
    border-radius: var(--noir-radius-xs);
}

.noir-radio input {
    border-radius: var(--noir-radius-full);
}

.noir-checkbox input:hover,
.noir-radio input:hover {
    border-color: var(--noir-border-strong);
}

.noir-checkbox input:checked,
.noir-radio input:checked {
    background-color: var(--noir-accent);
    border-color: var(--noir-accent);
}

.noir-checkbox input:checked::after {
    content: '';
    display: block;
    width: 5px;
    height: 9px;
    border: solid var(--noir-white);
    border-width: 0 2px 2px 0;
    transform: rotate(45deg) translate(1px, -1px);
    margin: 3px auto 0;
}

.noir-radio input:checked::after {
    content: '';
    display: block;
    width: 6px;
    height: 6px;
    background: var(--noir-white);
    border-radius: 50%;
    margin: 4px auto 0;
}

/* 开关 */
.noir-switch {
    display: inline-flex;
    align-items: center;
    gap: var(--noir-space-2);
    cursor: pointer;
    user-select: none;
    font-size: var(--noir-font-size-sm);
}

.noir-switch input {
    appearance: none;
    width: 40px;
    height: 22px;
    background-color: var(--noir-gray-300);
    border-radius: var(--noir-radius-full);
    cursor: pointer;
    position: relative;
    transition: background-color var(--noir-transition-base);
    flex-shrink: 0;
}

.noir-switch input::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 18px;
    height: 18px;
    background-color: var(--noir-white);
    border-radius: 50%;
    transition: transform var(--noir-transition-spring);
    box-shadow: var(--noir-shadow-sm);
}

.noir-switch input:checked {
    background-color: var(--noir-accent);
}

.noir-switch input:checked::after {
    transform: translateX(18px);
}

/* ========== 6. 卡片组件 ========== */
.noir-card {
    background-color: var(--noir-bg-elevated);
    backdrop-filter: blur(20px) saturate(130%) contrast(1.05) brightness(1.02);
    -webkit-backdrop-filter: blur(20px) saturate(130%) contrast(1.05) brightness(1.02);
    border: 1px solid var(--noir-border-light);
    border-radius: var(--noir-radius-lg);
    padding: var(--noir-space-6);
    box-shadow: var(--noir-shadow-xs), inset 0 1px 0 rgba(255,255,255,0.06);
    position: relative;
    overflow: hidden;
    transition:
        box-shadow var(--noir-transition-base),
        border-color var(--noir-transition-base),
        transform var(--noir-transition-base);
}
.noir-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: radial-gradient(ellipse at 30% 20%, rgba(255,255,255,0.08) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 80%, rgba(255,255,255,0.03) 0%, transparent 40%);
    pointer-events: none;
    z-index: 0;
}
.noir-card > * { position: relative; z-index: 1; }

.noir-card-hoverable:hover {
    box-shadow: var(--noir-shadow-lg);
    border-color: var(--noir-border-medium);
    transform: translateY(-2px);
}

.noir-card-clickable {
    cursor: pointer;
}

.noir-card-clickable:active {
    transform: scale(0.985);
    transition: transform var(--noir-transition-fast);
}

/* 卡片变体 */
.noir-card-elevated {
    box-shadow: var(--noir-shadow-md);
    border-color: transparent;
}

.noir-card-bordered {
    border: 2px solid var(--noir-border-light);
    box-shadow: none;
}

.noir-card-ghost {
    background-color: transparent;
    border: 1px dashed var(--noir-border-medium);
    box-shadow: none;
}

/* 卡片内区块 */
.noir-card-header {
    margin-bottom: var(--noir-space-5);
    padding-bottom: var(--noir-space-4);
    border-bottom: 1px solid var(--noir-border-light);
}

.noir-card-footer {
    margin-top: var(--noir-space-5);
    padding-top: var(--noir-space-4);
    border-top: 1px solid var(--noir-border-light);
    display: flex;
    align-items: center;
    gap: var(--noir-space-3);
}

/* ========== 7. 导航栏 ========== */
.noir-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--noir-space-4) var(--noir-space-6);
    background-color: var(--noir-bg-elevated);
    backdrop-filter: blur(20px) saturate(130%) contrast(1.05) brightness(1.02);
    -webkit-backdrop-filter: blur(20px) saturate(130%) contrast(1.05) brightness(1.02);
    border-bottom: 1px solid var(--noir-border-light);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background-color var(--noir-transition-slow);
}
.noir-nav::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(255,255,255,0.04) 0%, transparent 50%);
    pointer-events: none;
}

.noir-nav-brand {
    font-weight: var(--noir-font-weight-bold);
    font-size: var(--noir-font-size-lg);
    letter-spacing: -0.02em;
    color: var(--noir-text-primary);
}

.noir-nav-links {
    display: flex;
    align-items: center;
    gap: var(--noir-space-1);
}

.noir-nav-link {
    padding: var(--noir-space-2) var(--noir-space-3);
    border-radius: var(--noir-radius-sm);
    font-size: var(--noir-font-size-sm);
    font-weight: var(--noir-font-weight-medium);
    color: var(--noir-text-secondary);
    transition: all var(--noir-transition-fast);
}

.noir-nav-link:hover {
    color: var(--noir-text-primary);
    background-color: var(--noir-accent-subtle);
}

.noir-nav-link.active {
    color: var(--noir-text-primary);
    background-color: var(--noir-accent-subtle);
}

/* ========== 8. 模态框 ========== */
.noir-modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--noir-space-6);
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(var(--noir-blur-sm)) saturate(130%);
    -webkit-backdrop-filter: blur(var(--noir-blur-sm)) saturate(130%);
    animation: noir-fadeIn 200ms ease-out;
}

.noir-modal {
    background-color: var(--noir-bg-elevated);
    backdrop-filter: blur(24px) saturate(140%) contrast(1.08) brightness(1.03);
    -webkit-backdrop-filter: blur(24px) saturate(140%) contrast(1.08) brightness(1.03);
    border: 1px solid var(--noir-border-light);
    border-radius: var(--noir-radius-xl);
    box-shadow: var(--noir-shadow-xl), inset 0 1px 0 rgba(255,255,255,0.06);
    max-width: 520px;
    width: 100%;
    max-height: 85vh;
    overflow-y: auto;
    position: relative;
    animation: noir-slideUp 350ms cubic-bezier(0.16, 1, 0.3, 1);
}
.noir-modal::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: radial-gradient(ellipse at 40% 15%, rgba(255,255,255,0.1) 0%, transparent 55%);
    pointer-events: none;
}

.noir-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--noir-space-5) var(--noir-space-6);
    border-bottom: 1px solid var(--noir-border-light);
}

.noir-modal-body {
    padding: var(--noir-space-6);
}

.noir-modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--noir-space-3);
    padding: var(--noir-space-4) var(--noir-space-6);
    border-top: 1px solid var(--noir-border-light);
}

/* ========== 9. 加载器 ========== */
.noir-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--noir-border-light);
    border-top-color: var(--noir-accent);
    border-radius: 50%;
    animation: noir-spin 0.6s linear infinite;
    display: inline-block;
}

.noir-spinner-sm {
    width: 14px;
    height: 14px;
    border-width: 1.5px;
}

.noir-spinner-lg {
    width: 32px;
    height: 32px;
    border-width: 3px;
}

/* 骨架屏 */
.noir-skeleton {
    background: linear-gradient(90deg,
            var(--noir-gray-150) 25%,
            var(--noir-gray-100) 37%,
            var(--noir-gray-150) 63%);
    background-size: 400% 100%;
    animation: noir-shimmer 1.5s ease-in-out infinite;
    border-radius: var(--noir-radius-sm);
}

.noir-skeleton-text {
    height: 14px;
    margin-bottom: var(--noir-space-2);
    border-radius: var(--noir-radius-xs);
}

.noir-skeleton-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--noir-radius-full);
}

.noir-skeleton-card {
    height: 160px;
    border-radius: var(--noir-radius-lg);
}

/* 三点加载 */
.noir-dots {
    display: inline-flex;
    gap: 4px;
    align-items: center;
}

.noir-dots span {
    width: 6px;
    height: 6px;
    background-color: var(--noir-text-tertiary);
    border-radius: 50%;
    animation: noir-bounce 1.4s ease-in-out infinite both;
}

.noir-dots span:nth-child(1) {
    animation-delay: -0.32s;
}

.noir-dots span:nth-child(2) {
    animation-delay: -0.16s;
}

.noir-dots span:nth-child(3) {
    animation-delay: 0s;
}

/* ========== 10. 徽章 & 标签 ========== */
.noir-badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    font-size: var(--noir-font-size-xs);
    font-weight: var(--noir-font-weight-medium);
    border-radius: var(--noir-radius-full);
    background-color: var(--noir-accent-subtle);
    color: var(--noir-text-primary);
    border: 1px solid var(--noir-border-light);
    white-space: nowrap;
    line-height: 1.4;
}

.noir-badge-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    margin-right: 5px;
    background-color: currentColor;
}

.noir-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    font-size: var(--noir-font-size-xs);
    border-radius: var(--noir-radius-sm);
    background-color: var(--noir-bg-tertiary);
    color: var(--noir-text-secondary);
    border: 1px solid var(--noir-border-light);
    transition: all var(--noir-transition-fast);
}

.noir-tag:hover {
    border-color: var(--noir-border-medium);
    color: var(--noir-text-primary);
}

.noir-tag-close {
    cursor: pointer;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    transition: background-color var(--noir-transition-fast);
}

.noir-tag-close:hover {
    background-color: var(--noir-gray-200);
}

/* ========== 11. 工具提示 ========== */
.noir-tooltip {
    position: relative;
    display: inline-flex;
}

.noir-tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(4px);
    padding: 6px 12px;
    font-size: var(--noir-font-size-xs);
    font-weight: var(--noir-font-weight-medium);
    background-color: var(--noir-bg-inverse);
    color: var(--noir-text-inverse);
    border-radius: var(--noir-radius-sm);
    white-space: nowrap;
    pointer-events: none;
    opacity: 0;
    transition: all var(--noir-transition-base);
    z-index: 300;
    box-shadow: var(--noir-shadow-md);
}

.noir-tooltip:hover::after {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ========== 12. 分割线 ========== */
.noir-divider {
    border: none;
    height: 1px;
    background-color: var(--noir-border-light);
    margin: var(--noir-space-6) 0;
}

.noir-divider-vertical {
    width: 1px;
    height: auto;
    background-color: var(--noir-border-light);
    align-self: stretch;
}

/* ========== 13. 头像 ========== */
.noir-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--noir-radius-full);
    background-color: var(--noir-accent-subtle);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--noir-font-weight-semibold);
    font-size: var(--noir-font-size-sm);
    color: var(--noir-text-primary);
    overflow: hidden;
    flex-shrink: 0;
}

.noir-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.noir-avatar-sm {
    width: 28px;
    height: 28px;
    font-size: var(--noir-font-size-xs);
}

.noir-avatar-lg {
    width: 56px;
    height: 56px;
    font-size: var(--noir-font-size-xl);
}

.noir-avatar-xl {
    width: 80px;
    height: 80px;
    font-size: var(--noir-font-size-3xl);
}

/* 头像组 */
.noir-avatar-group {
    display: flex;
    align-items: center;
}

.noir-avatar-group .noir-avatar {
    border: 2px solid var(--noir-bg-elevated);
    margin-left: -10px;
}

.noir-avatar-group .noir-avatar:first-child {
    margin-left: 0;
}

/* ========== 14. 代码块 ========== */
.noir-code {
    font-family: var(--noir-font-mono);
    font-size: var(--noir-font-size-sm);
    background-color: var(--noir-bg-tertiary);
    padding: 2px 6px;
    border-radius: var(--noir-radius-xs);
    border: 1px solid var(--noir-border-light);
    color: var(--noir-text-primary);
}

.noir-code-block {
    font-family: var(--noir-font-mono);
    font-size: var(--noir-font-size-sm);
    background-color: var(--noir-bg-tertiary);
    border: 1px solid var(--noir-border-light);
    border-radius: var(--noir-radius-md);
    padding: var(--noir-space-5);
    overflow-x: auto;
    line-height: var(--noir-line-height-relaxed);
    white-space: pre;
    color: var(--noir-text-primary);
}

/* ========== 15. 表格 ========== */
.noir-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--noir-font-size-sm);
}

.noir-table th,
.noir-table td {
    padding: var(--noir-space-3) var(--noir-space-4);
    text-align: left;
    border-bottom: 1px solid var(--noir-border-light);
}

.noir-table th {
    font-weight: var(--noir-font-weight-semibold);
    color: var(--noir-text-secondary);
    font-size: var(--noir-font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.noir-table tr:hover td {
    background-color: var(--noir-accent-subtle);
}

.noir-table tr:last-child td {
    border-bottom: none;
}

/* ========== 16. 网格布局 ========== */
.noir-grid {
    display: grid;
    gap: var(--noir-space-6);
}

.noir-grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.noir-grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.noir-grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

.noir-grid-auto {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

/* ========== 17. Flex 工具 ========== */
.noir-flex {
    display: flex;
}

.noir-flex-col {
    flex-direction: column;
}

.noir-items-center {
    align-items: center;
}

.noir-items-start {
    align-items: flex-start;
}

.noir-items-end {
    align-items: flex-end;
}

.noir-justify-center {
    justify-content: center;
}

.noir-justify-between {
    justify-content: space-between;
}

.noir-justify-end {
    justify-content: flex-end;
}

.noir-gap-1 {
    gap: var(--noir-space-1);
}

.noir-gap-2 {
    gap: var(--noir-space-2);
}

.noir-gap-3 {
    gap: var(--noir-space-3);
}

.noir-gap-4 {
    gap: var(--noir-space-4);
}

.noir-gap-5 {
    gap: var(--noir-space-5);
}

.noir-gap-6 {
    gap: var(--noir-space-6);
}

.noir-gap-8 {
    gap: var(--noir-space-8);
}

/* ========== 18. 间距工具 ========== */
.noir-p-0 {
    padding: 0;
}

.noir-p-4 {
    padding: var(--noir-space-4);
}

.noir-p-6 {
    padding: var(--noir-space-6);
}

.noir-p-8 {
    padding: var(--noir-space-8);
}

.noir-px-4 {
    padding-left: var(--noir-space-4);
    padding-right: var(--noir-space-4);
}

.noir-px-6 {
    padding-left: var(--noir-space-6);
    padding-right: var(--noir-space-6);
}

.noir-py-2 {
    padding-top: var(--noir-space-2);
    padding-bottom: var(--noir-space-2);
}

.noir-py-4 {
    padding-top: var(--noir-space-4);
    padding-bottom: var(--noir-space-4);
}

.noir-py-6 {
    padding-top: var(--noir-space-6);
    padding-bottom: var(--noir-space-6);
}

.noir-py-12 {
    padding-top: var(--noir-space-12);
    padding-bottom: var(--noir-space-12);
}

.noir-m-0 {
    margin: 0;
}

.noir-mb-2 {
    margin-bottom: var(--noir-space-2);
}

.noir-mb-4 {
    margin-bottom: var(--noir-space-4);
}

.noir-mb-6 {
    margin-bottom: var(--noir-space-6);
}

.noir-mb-8 {
    margin-bottom: var(--noir-space-8);
}

.noir-mt-4 {
    margin-top: var(--noir-space-4);
}

.noir-mt-6 {
    margin-top: var(--noir-space-6);
}

/* ========== 19. 容器 ========== */
.noir-container {
    width: 100%;
    max-width: var(--noir-max-width);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--noir-space-6);
    padding-right: var(--noir-space-6);
}

.noir-container-wide {
    max-width: var(--noir-max-width-wide);
}

/* ========== 20. 毛玻璃效果 · 液态玻璃 ========== */
.noir-glass {
    background-color: rgba(255, 255, 255, 0.38);
    backdrop-filter: blur(var(--noir-blur-md)) saturate(150%) contrast(105%);
    -webkit-backdrop-filter: blur(var(--noir-blur-md)) saturate(150%) contrast(105%);
    border: 1px solid rgba(0, 0, 0, 0.03);
    position: relative;
}

.noir-glass::after {
    content: '';
    position: absolute;
    top: 0; left: 5%; right: 5%; height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.06), transparent);
    pointer-events: none;
}

.noir-dark .noir-glass,
[data-theme="dark"] .noir-glass {
    background-color: rgba(17, 17, 17, 0.38);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

/* ========== 21. 动画关键帧 ========== */
@keyframes noir-spin {
    to {
        transform: rotate(360deg);
    }
}

@keyframes noir-fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes noir-fadeInUp {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes noir-fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes noir-slideUp {
    from {
        opacity: 0;
        transform: translateY(24px) scale(0.96);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes noir-slideDown {
    from {
        opacity: 0;
        transform: translateY(-24px) scale(0.96);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes noir-scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes noir-shimmer {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

@keyframes noir-bounce {
    0%,
    80%,
    100% {
        transform: scale(0);
        opacity: 0.3;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes noir-pulse {
    0%,
    100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

@keyframes noir-float {
    0%,
    100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-8px);
    }
}

@keyframes noir-breath {
    0%,
    100% {
        box-shadow: var(--noir-shadow-glow);
    }
    50% {
        box-shadow: var(--noir-shadow-glow-lg);
    }
}

/* ========== 22. 动画实用类 ========== */
.noir-animate-fadeIn {
    animation: noir-fadeIn var(--noir-transition-slow) ease-out;
}

.noir-animate-fadeInUp {
    animation: noir-fadeInUp 500ms cubic-bezier(0.16, 1, 0.3, 1);
}

.noir-animate-slideUp {
    animation: noir-slideUp 400ms cubic-bezier(0.16, 1, 0.3, 1);
}

.noir-animate-scaleIn {
    animation: noir-scaleIn 300ms cubic-bezier(0.16, 1, 0.3, 1);
}

.noir-animate-pulse {
    animation: noir-pulse 2s ease-in-out infinite;
}

.noir-animate-float {
    animation: noir-float 3s ease-in-out infinite;
}

/* 交错动画延迟 */
.noir-stagger>*:nth-child(1) {
    animation-delay: 0ms;
}

.noir-stagger>*:nth-child(2) {
    animation-delay: 80ms;
}

.noir-stagger>*:nth-child(3) {
    animation-delay: 160ms;
}

.noir-stagger>*:nth-child(4) {
    animation-delay: 240ms;
}

.noir-stagger>*:nth-child(5) {
    animation-delay: 320ms;
}

.noir-stagger>*:nth-child(6) {
    animation-delay: 400ms;
}

.noir-stagger>*:nth-child(7) {
    animation-delay: 480ms;
}

.noir-stagger>*:nth-child(8) {
    animation-delay: 560ms;
}

/* ========== 23. 消息/对话气泡 ========== */
.noir-message {
    display: flex;
    gap: var(--noir-space-3);
    padding: var(--noir-space-4) var(--noir-space-5);
    animation: noir-fadeInUp 350ms ease-out;
}

.noir-message-bubble {
    max-width: 80%;
    padding: var(--noir-space-3) var(--noir-space-5);
    border-radius: var(--noir-radius-xl);
    font-size: var(--noir-font-size-sm);
    line-height: var(--noir-line-height-relaxed);
    position: relative;
}

.noir-message-user .noir-message-bubble {
    background-color: var(--noir-accent);
    color: var(--noir-text-inverse);
    border-bottom-right-radius: var(--noir-radius-sm);
    margin-left: auto;
}

.noir-message-assistant .noir-message-bubble {
    background-color: var(--noir-bg-tertiary);
    color: var(--noir-text-primary);
    border-bottom-left-radius: var(--noir-radius-sm);
    border: 1px solid var(--noir-border-light);
}

/* ========== 24. 进度条 ========== */
.noir-progress {
    width: 100%;
    height: 6px;
    background-color: var(--noir-bg-tertiary);
    border-radius: var(--noir-radius-full);
    overflow: hidden;
}

.noir-progress-bar {
    height: 100%;
    background-color: var(--noir-accent);
    border-radius: var(--noir-radius-full);
    transition: width var(--noir-transition-ease-out-expo);
}

.noir-progress-indeterminate .noir-progress-bar {
    width: 40%;
    animation: noir-progressIndeterminate 1.8s ease-in-out infinite;
}

@keyframes noir-progressIndeterminate {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(350%);
    }
}

/* ========== 25. 通知/Toast ========== */
.noir-toast {
    display: flex;
    align-items: center;
    gap: var(--noir-space-3);
    padding: var(--noir-space-3) var(--noir-space-5);
    background-color: var(--noir-bg-inverse);
    color: var(--noir-text-inverse);
    border-radius: var(--noir-radius-lg);
    box-shadow: var(--noir-shadow-lg);
    font-size: var(--noir-font-size-sm);
    font-weight: var(--noir-font-weight-medium);
    animation: noir-slideUp 350ms cubic-bezier(0.16, 1, 0.3, 1);
    max-width: 400px;
}

.noir-toast-container {
    position: fixed;
    bottom: var(--noir-space-6);
    right: var(--noir-space-6);
    z-index: 400;
    display: flex;
    flex-direction: column;
    gap: var(--noir-space-3);
}

/* ========== 26. 多端响应式适配 ========== */

/* ⌚ 圆形手表 (≤280px) */
@media (max-width: 280px) {
    :root { --noir-max-width: 256px; --noir-font-size-base: 0.65rem;
        --noir-radius-xs: 4px; --noir-radius-sm: 6px; --noir-radius-md: 8px;
        --noir-radius-lg: 10px; --noir-radius-xl: 12px; --noir-radius-2xl: 14px; }

    .noir-grid-2, .noir-grid-3, .noir-grid-4, .noir-grid-auto { grid-template-columns: 1fr; }

    .noir-h1 { font-size: 0.9rem; } .noir-h2 { font-size: 0.8rem; }
    .noir-h3 { font-size: 0.72rem; } .noir-h4 { font-size: 0.66rem; }
    .noir-h5 { font-size: 0.62rem; } .noir-h6 { font-size: 0.58rem; }

    .noir-nav { padding: 3px 5px; flex-wrap: wrap; gap: 1px; backdrop-filter: none; -webkit-backdrop-filter: none; }
    .noir-nav-brand { font-size: 0.65rem; }
    .noir-nav-link { font-size: 0.55rem; padding: 2px 3px; }

    .noir-card { padding: 5px 7px; border-radius: var(--noir-radius-sm); box-shadow: none; }
    .noir-card-header { margin-bottom: 3px; padding-bottom: 3px; }
    .noir-card-footer { margin-top: 3px; padding-top: 3px; gap: 2px; }

    .noir-btn { padding: 3px 7px; font-size: 0.55rem; gap: 2px; border-radius: 16px; }
    .noir-btn:active { transform: scale(0.93); }
    .noir-btn-sm { padding: 2px 5px; font-size: 0.5rem; }
    .noir-btn-lg { padding: 5px 10px; font-size: 0.6rem; }
    .noir-btn-xl { padding: 7px 12px; font-size: 0.65rem; }
    .noir-btn-icon { width: 22px; height: 22px; }
    .noir-btn-icon.noir-btn-sm { width: 18px; height: 18px; }
    .noir-btn-icon.noir-btn-lg { width: 26px; height: 26px; }

    .noir-input, .noir-textarea, .noir-select { padding: 3px 5px; font-size: 0.55rem; border-radius: var(--noir-radius-xs); }
    .noir-modal { max-width: 100%; margin: 3px; border-radius: var(--noir-radius-sm); }
    .noir-modal-header { padding: 5px 7px; }
    .noir-modal-body { padding: 6px; }
    .noir-modal-footer { padding: 5px 7px; gap: 3px; }

    .noir-message { padding: 3px 5px; gap: 3px; }
    .noir-message-bubble { max-width: 96%; padding: 3px 6px; font-size: 0.55rem; border-radius: var(--noir-radius-sm); }
    .noir-container { padding-left: 3px; padding-right: 3px; }
    .noir-badge { padding: 1px 4px; font-size: 0.5rem; }
    .noir-tag { padding: 1px 4px; font-size: 0.5rem; }
    .noir-table th, .noir-table td { padding: 2px 4px; font-size: 0.5rem; }
    .noir-avatar { width: 22px; height: 22px; font-size: 0.5rem; }
    .noir-avatar-sm { width: 16px; height: 16px; }
    .noir-avatar-lg { width: 32px; height: 32px; }
    .noir-avatar-xl { width: 42px; height: 42px; }
    .noir-toast { max-width: 220px; padding: 3px 6px; font-size: 0.55rem; }
}

/* ⌚ 方形手表 (281px-320px) */
@media (min-width: 281px) and (max-width: 320px) {
    :root { --noir-max-width: 296px; --noir-font-size-base: 0.7rem; }
    .noir-grid-2, .noir-grid-3, .noir-grid-4, .noir-grid-auto { grid-template-columns: 1fr; }

    .noir-h1 { font-size: 1rem; } .noir-h2 { font-size: 0.88rem; }
    .noir-h3 { font-size: 0.8rem; } .noir-h4 { font-size: 0.74rem; }
    .noir-h5 { font-size: 0.68rem; } .noir-h6 { font-size: 0.64rem; }

    .noir-nav { padding: 4px 7px; backdrop-filter: none; -webkit-backdrop-filter: none; }
    .noir-nav-brand { font-size: 0.7rem; }
    .noir-nav-link { font-size: 0.6rem; padding: 2px 4px; }

    .noir-card { padding: 7px 9px; }
    .noir-card-header { margin-bottom: 5px; padding-bottom: 5px; }
    .noir-card-footer { margin-top: 5px; padding-top: 5px; }

    .noir-btn { padding: 4px 9px; font-size: 0.6rem; border-radius: 18px; }
    .noir-btn-sm { padding: 3px 6px; font-size: 0.55rem; }
    .noir-btn-lg { padding: 7px 12px; font-size: 0.65rem; }
    .noir-btn-xl { padding: 9px 16px; font-size: 0.7rem; }
    .noir-btn-icon { width: 26px; height: 26px; }
    .noir-btn-icon.noir-btn-sm { width: 20px; height: 20px; }
    .noir-btn-icon.noir-btn-lg { width: 30px; height: 30px; }

    .noir-input, .noir-textarea, .noir-select { padding: 4px 7px; font-size: 0.6rem; }
    .noir-modal { max-width: 100%; margin: 5px; }
    .noir-modal-header { padding: 7px 9px; }
    .noir-modal-body { padding: 8px; }
    .noir-modal-footer { padding: 7px 9px; }

    .noir-message { padding: 5px 7px; gap: 5px; }
    .noir-message-bubble { max-width: 93%; padding: 4px 8px; font-size: 0.6rem; }
    .noir-container { padding-left: 5px; padding-right: 5px; }
    .noir-badge { padding: 2px 5px; font-size: 0.55rem; }
    .noir-tag { padding: 2px 5px; font-size: 0.55rem; }
    .noir-avatar { width: 26px; height: 26px; }
    .noir-avatar-sm { width: 18px; height: 18px; }
    .noir-avatar-lg { width: 36px; height: 36px; }
    .noir-avatar-xl { width: 48px; height: 48px; }
    .noir-toast { max-width: 260px; padding: 5px 8px; font-size: 0.6rem; }
}

/* 📱 小屏手机 (321px-480px) */
@media (min-width: 321px) and (max-width: 480px) {
    .noir-grid-2, .noir-grid-3, .noir-grid-4 { grid-template-columns: 1fr; }
    .noir-h1 { font-size: var(--noir-font-size-3xl); }
    .noir-h2 { font-size: var(--noir-font-size-2xl); }
    .noir-h3 { font-size: var(--noir-font-size-xl); }
    .noir-card { padding: var(--noir-space-4); border-radius: var(--noir-radius-md); }
    .noir-btn-xl { padding: 14px 24px; font-size: var(--noir-font-size-base); }
    .noir-nav { padding: var(--noir-space-2) var(--noir-space-3); backdrop-filter: none; -webkit-backdrop-filter: none; }
    .noir-message-bubble { max-width: 92%; }
    .noir-container { padding-left: var(--noir-space-3); padding-right: var(--noir-space-3); }
    .noir-modal { max-width: 95%; }
}

/* 📱 大屏手机 (481px-600px) */
@media (min-width: 481px) and (max-width: 600px) {
    .noir-grid-2 { grid-template-columns: repeat(2, 1fr); }
    .noir-grid-3, .noir-grid-4 { grid-template-columns: repeat(2, 1fr); }
}

/* 📟 平板 (601px-768px) */
@media (min-width: 601px) and (max-width: 768px) {
    .noir-grid-2 { grid-template-columns: repeat(2, 1fr); }
    .noir-grid-3 { grid-template-columns: repeat(2, 1fr); }
    .noir-grid-4 { grid-template-columns: repeat(3, 1fr); }
    .noir-h1 { font-size: var(--noir-font-size-4xl); }
    .noir-h2 { font-size: var(--noir-font-size-3xl); }
    .noir-h3 { font-size: var(--noir-font-size-2xl); }
    .noir-nav { padding: var(--noir-space-3) var(--noir-space-4); }
    .noir-modal { max-width: 90%; }
    .noir-message-bubble { max-width: 88%; }
    .noir-container { padding-left: var(--noir-space-4); padding-right: var(--noir-space-4); }
}

/* 💻 笔记本/平板横屏 (769px-1200px) */
@media (min-width: 769px) and (max-width: 1200px) {
    .noir-grid-auto { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
}

/* 🖥️ PC 大屏 (1201px+) */
@media (min-width: 1201px) {
    .noir-container-wide { max-width: 1200px; }
}

/* 安全区域适配 */
@supports (padding-top: env(safe-area-inset-top)) {
    .noir-nav { padding-top: calc(var(--noir-space-4) + env(safe-area-inset-top)); }
    .noir-container {
        padding-left: calc(var(--noir-space-6) + env(safe-area-inset-left));
        padding-right: calc(var(--noir-space-6) + env(safe-area-inset-right));
    }
    .noir-toast-container {
        bottom: calc(var(--noir-space-6) + env(safe-area-inset-bottom));
        right: calc(var(--noir-space-6) + env(safe-area-inset-right));
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    .noir-btn { min-height: 44px; min-width: 44px; padding: 12px 22px; }
    .noir-btn-sm { min-height: 36px; min-width: 36px; padding: 8px 14px; }
    .noir-btn-icon { min-height: 44px; min-width: 44px; }
    .noir-nav-link { min-height: 44px; display: inline-flex; align-items: center; }
    * { -webkit-tap-highlight-color: transparent; }
}

/* ========== 27. 无障碍 ========== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

.noir-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

:focus-visible {
    outline: 2px solid var(--noir-gray-800);
    outline-offset: 2px;
    border-radius: var(--noir-radius-xs);
}

/* ========== 28. 打印样式 ========== */
@media print {
    .noir-nav,
    .noir-modal-overlay,
    .noir-toast-container,
    .noir-btn {
        display: none !important;
    }

    body {
        background: white;
        color: black;
        font-size: 12pt;
    }

    .noir-card {
        box-shadow: none;
        border: 1px solid #ccc;
        break-inside: avoid;
    }
}

/* ========== 29. 选中文本样式 ========== */
::selection {
    background-color: var(--noir-gray-800);
    color: var(--noir-white);
}

.noir-dark ::selection,
[data-theme="dark"] ::selection {
    background-color: var(--noir-gray-300);
    color: var(--noir-black);
}

/* ========== 30. 滚动条美化 ========== */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background-color: var(--noir-gray-300);
    border-radius: var(--noir-radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background-color: var(--noir-gray-400);
}

.noir-dark ::-webkit-scrollbar-thumb,
[data-theme="dark"] ::-webkit-scrollbar-thumb {
    background-color: var(--noir-gray-700);
}

.noir-dark ::-webkit-scrollbar-thumb:hover,
[data-theme="dark"] ::-webkit-scrollbar-thumb:hover {
    background-color: var(--noir-gray-600);
}