/* ============================================================
 * tokens.css — 全站设计令牌与共享基础组件 v2.0
 * 统一品牌色 / 渐变 / 玻璃拟态 / 圆角 / 阴影 / 缓动 / 卡片 / 按钮 / 入场动效 / 暗色模式
 * 引入顺序：在 tailwind.min.css 之后、各页面 css 之前
 * ============================================================ */

/* ---------- 字体系统 ---------- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Plus+Jakarta+Sans:wght@500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    /* ===== 品牌主色（统一弃用绿色 CTA，全站只用蓝） ===== */
    --brand: #2563eb;
    --brand-600: #2563eb;
    --brand-700: #1d4ed8;
    --brand-50: #eff6ff;
    --brand-100: #dbeafe;
    --brand-200: #bfdbfe;
    --brand-400: #60a5fa;
    --brand-500: #3b82f6;
    --brand-800: #1e40af;
    --brand-900: #1e3a8a;

    /* ===== 品牌渐变色系（新增） ===== */
    --gradient-brand: linear-gradient(135deg, #2563eb 0%, #3b82f6 50%, #60a5fa 100%);
    --gradient-brand-dark: linear-gradient(135deg, #1e40af 0%, #2563eb 100%);
    --gradient-brand-light: linear-gradient(135deg, #60a5fa 0%, #93c5fd 100%);
    --gradient-warm: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    --gradient-warm-dark: linear-gradient(135deg, #d97706 0%, #b45309 100%);
    --gradient-success: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --gradient-hero-text: linear-gradient(135deg, #2563eb 0%, #7c3aed 50%, #2563eb 100%);
    --gradient-shimmer: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.4) 50%, transparent 100%);

    /* ===== 强调色（会员 / 提示 / 倒计时） ===== */
    --accent: #f59e0b;
    --accent-500: #f59e0b;
    --accent-600: #d97706;
    --accent-400: #fbbf24;
    --accent-300: #fcd34d;

    /* ===== 语义色彩层次（新增 - 多层级） ===== */
    /* 成功色 */
    --success: #10b981;
    --success-50: #ecfdf5;
    --success-100: #d1fae5;
    --success-500: #10b981;
    --success-glow: 0 0 20px rgba(16, 185, 129, 0.3);

    /* 危险色 */
    --danger: #ef4444;
    --danger-50: #fef2f2;
    --danger-500: #ef4444;
    --danger-glow: 0 0 20px rgba(239, 68, 68, 0.3);

    /* 信息色 */
    --info-500: #3b82f6;
    --info-soft: rgba(59, 130, 246, 0.08);
    --info-glow: 0 0 20px rgba(59, 130, 246, 0.25);

    /* 警告光晕（用于会员 CTA） */
    --warm-glow: 0 12px 28px rgba(245, 158, 11, 0.25);
    --brand-glow: 0 8px 24px rgba(37, 99, 235, 0.25);
    --brand-glow-strong: 0 12px 32px rgba(37, 99, 235, 0.35);

    /* ===== 文字 ===== */
    --ink: #0f172a;
    --slate-400: #94a3b8;
    --slate-500: #64748b;
    --slate-600: #475569;
    --slate-700: #334155;

    /* ===== 线条 / 背景 ===== */
    --line: #e2e8f0;
    --line-2: #f1f5f9;

    /* ===== 背景纹理/渐变（新增） ===== */
    --bg-mesh:
        radial-gradient(at 20% 20%, rgba(37, 99, 235, 0.08) 0px, transparent 50%),
        radial-gradient(at 80% 80%, rgba(14, 165, 233, 0.06) 0px, transparent 50%),
        radial-gradient(at 40% 40%, rgba(245, 158, 11, 0.04) 0px, transparent 50%);
    --bg-grid:
        linear-gradient(rgba(37, 99, 235, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(37, 99, 235, 0.03) 1px, transparent 1px);
    --bg-noise: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.03'/%3E%3C/svg%3E");

    /* ===== 玻璃拟态增强（新增） ===== */
    --glass-bg: rgba(255, 255, 255, 0.72);
    --glass-bg-heavy: rgba(255, 255, 255, 0.85);
    --glass-border: rgba(255, 255, 255, 0.6);
    --glass-shadow: 0 8px 32px rgba(37, 99, 235, 0.12);
    --glass-blur: blur(16px);
    --glass-blur-light: blur(8px);

    /* ===== 圆角 ===== */
    --radius-sm: 10px;
    --radius: 16px;
    --radius-lg: 20px;
    --radius-xl: 24px;
    --radius-pill: 999px;

    /* ===== 阴影（增强至五级） ===== */
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, .06), 0 1px 3px rgba(15, 23, 42, .08);
    --shadow: 0 10px 25px -5px rgba(15, 23, 42, .10), 0 8px 10px -6px rgba(15, 23, 42, .08);
    --shadow-md: 0 16px 32px -8px rgba(15, 23, 42, .10);
    --shadow-float: 0 24px 60px rgba(15, 23, 42, .12);
    --shadow-float-strong: 0 30px 70px rgba(15, 23, 42, .18);
    --shadow-brand: 0 12px 24px rgba(37, 99, 235, .20);
    --shadow-brand-strong: 0 20px 40px rgba(37, 99, 235, .30);
    --shadow-inner: inset 0 2px 4px rgba(15, 23, 42, .04);

    /* ===== 动效（增强） ===== */
    --ease: cubic-bezier(.4, 0, .2, 1);
    --ease-out: cubic-bezier(0, 0, .2, 1);
    --ease-in-out: cubic-bezier(.4, 0, .2, 1);
    --ease-spring: cubic-bezier(.34, 1.56, .64, 1);
    --dur-fast: .15s;
    --dur: .25s;
    --dur-slow: .6s;
    --dur-slower: .8s;

    /* ===== 字体系统（新增） ===== */
    --font-display: 'Plus Jakarta Sans', 'Inter', system-ui, -apple-system, sans-serif;
    --font-body: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;

    /* ===== 排版层次（新增） ===== */
    --tracking-tight: -0.03em;
    --tracking-normal: -0.02em;
    --line-height-relaxed: 1.7;
    --measure-narrow: 65ch;
    --measure-wide: 72ch;
}

/* ============================================================
 * Phase 2: 暗色模式完整令牌
 * ============================================================ */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        /* 背景层 */
        --bg-primary: #0f172a;
        --bg-secondary: #1e293b;
        --bg-tertiary: #334155;
        --bg-card: #1e293b;

        /* 文字层 */
        --ink: #f1f5f9;
        --text-primary: #f1f5f9;
        --text-secondary: #cbd5e1;
        --text-muted: #94a3b8;
        --slate-400: #94a3b8;
        --slate-500: #64748b;
        --slate-600: #94a3b8;
        --slate-700: #cbd5e1;

        /* 边框 */
        --line: #334155;
        --line-2: #1e293b;
        --border-subtle: #1e293b;

        /* 品牌色调整（暗色模式下更亮） */
        --brand: #60a5fa;
        --brand-600: #60a5fa;
        --brand-700: #3b82f6;
        --brand-50: #172554;
        --brand-100: #1e3a5f;
        --brand-200: #1e40af;
        --brand-400: #93c5fd;
        --brand-500: #60a5fa;

        /* 语义色调整 */
        --success-50: #052e16;
        --success-100: #064e3b;
        --danger-50: #450a0a;
        --danger-100: #7f1d1d;
        --info-soft: rgba(96, 165, 250, 0.12);

        /* 玻璃拟态暗色调整 */
        --glass-bg: rgba(30, 41, 59, 0.72);
        --glass-bg-heavy: rgba(30, 41, 59, 0.88);
        --glass-border: rgba(51, 65, 85, 0.6);

        /* 阴影（暗色更深） */
        --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3), 0 1px 3px rgba(0, 0, 0, 0.4);
        --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
        --shadow-md: 0 16px 32px -8px rgba(0, 0, 0, 0.4);
        --shadow-float: 0 24px 60px rgba(0, 0, 0, 0.5);
        --shadow-float-strong: 0 30px 70px rgba(0, 0, 0, 0.6);
        --shadow-brand: 0 12px 24px rgba(37, 99, 235, 0.25);
        --shadow-brand-strong: 0 20px 40px rgba(37, 99, 235, 0.35);

        /* 光晕效果增强（暗色下更明显） */
        --brand-glow: 0 8px 28px rgba(96, 165, 250, 0.35);
        --brand-glow-strong: 0 12px 36px rgba(96, 165, 250, 0.45);
        --warm-glow: 0 12px 32px rgba(251, 191, 36, 0.35);

        /* 背景纹理调整 */
        --bg-mesh:
            radial-gradient(at 20% 20%, rgba(96, 165, 250, 0.08) 0px, transparent 50%),
            radial-gradient(at 80% 80%, rgba(37, 99, 235, 0.06) 0px, transparent 50%),
            radial-gradient(at 40% 40%, rgba(251, 191, 36, 0.03) 0px, transparent 50%);
    }
}

/* 手动覆盖：强制亮色模式 */
[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-card: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --ink: #0f172a;
    --line: #e2e8f0;
    --line-2: #f1f5f9;
    --border-subtle: #f1f5f9;
    --brand: #2563eb;
    --brand-600: #2563eb;
    --brand-700: #1d4ed8;
    --brand-50: #eff6ff;
    --brand-100: #dbeafe;
    --glass-bg: rgba(255, 255, 255, 0.72);
    --glass-bg-heavy: rgba(255, 255, 255, 0.85);
    --glass-border: rgba(255, 255, 255, 0.6);
}

/* 手动覆盖：强制暗色模式 */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-card: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --ink: #f1f5f9;
    --line: #334155;
    --line-2: #1e293b;
    --border-subtle: #1e293b;
    --brand: #60a5fa;
    --brand-600: #60a5fa;
    --brand-700: #3b82f6;
    --brand-50: #172554;
    --brand-100: #1e3a5f;
    --glass-bg: rgba(30, 41, 59, 0.72);
    --glass-bg-heavy: rgba(30, 41, 59, 0.88);
    --glass-border: rgba(51, 65, 85, 0.6);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3), 0 1px 3px rgba(0, 0, 0, 0.4);
    --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 16px 32px -8px rgba(0, 0, 0, 0.4);
    --shadow-float: 0 24px 60px rgba(0, 0, 0, 0.5);
    --shadow-float-strong: 0 30px 70px rgba(0, 0, 0, 0.6);
    --shadow-brand: 0 12px 24px rgba(96, 165, 250, 0.25);
    --shadow-brand-strong: 0 20px 40px rgba(96, 165, 250, 0.35);
    --brand-glow: 0 8px 28px rgba(96, 165, 250, 0.35);
    --brand-glow-strong: 0 12px 36px rgba(96, 165, 250, 0.45);
    --warm-glow: 0 12px 32px rgba(251, 191, 36, 0.35);
    --bg-mesh:
        radial-gradient(at 20% 20%, rgba(96, 165, 250, 0.08) 0px, transparent 50%),
        radial-gradient(at 80% 80%, rgba(37, 99, 235, 0.06) 0px, transparent 50%),
        radial-gradient(at 40% 40%, rgba(251, 191, 36, 0.03) 0px, transparent 50%);
}

/* ============================================================
 * 全局排版增强
 * ============================================================ */
html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-variant-numeric: tabular-nums;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    line-height: var(--line-height-relaxed);
    background-color: var(--bg-primary, #ffffff);
    color: var(--ink, #0f172a);
    transition: background-color var(--dur-slow) var(--ease),
                color var(--dur-slow) var(--ease);
}

/* 标题字体优化 */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    letter-spacing: var(--tracking-tight);
}
h1 { font-weight: 800; }
h2 { font-weight: 700; letter-spacing: var(--tracking-normal); }
h3 { font-weight: 700; }

/* 正文最佳阅读宽度 */
p {
    max-width: var(--measure-wide);
}

/* ============================================================
 * 共享卡片 v2.0（玻璃拟态 + Bento 支持）
 * ============================================================ */
.u-card {
    background: var(--bg-card, #fff);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    transition: transform var(--dur) var(--ease),
        box-shadow var(--dur) var(--ease),
        border-color var(--dur) var(--ease);
    position: relative;
    overflow: hidden;
}

.u-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent 40%, rgba(37, 99, 235, 0.02));
    opacity: 0;
    transition: opacity var(--dur) var(--ease);
    pointer-events: none;
}

.u-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-float);
    border-color: rgba(37, 99, 235, 0.2);
}

.u-card:hover::before {
    opacity: 1;
}

/* 玻璃拟态卡片变体 */
.u-card--glass {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}

/* Bento Grid 卡片 */
.card-bento {
    border-radius: var(--radius-lg);
    background: var(--bg-card, white);
    border: 1px solid var(--line);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}
.card-bento:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-float-strong);
    border-color: rgba(37, 99, 235, 0.25);
}

/* 统计数字卡片 */
.card-stat {
    background: linear-gradient(135deg, var(--brand-50, #eff6ff) 0%, var(--bg-card, white) 100%);
    border-left: 4px solid var(--brand);
}

/* ============================================================
 * 按钮系统 v2.0（完整变体）
 * ============================================================ */
.u-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    min-height: 44px;
    min-width: 44px;
    padding: 0 1.5rem;
    border-radius: var(--radius-pill);
    font-weight: 600;
    font-size: 15px;
    line-height: 1;
    cursor: pointer;
    border: 1px solid transparent;
    text-decoration: none;
    transition: all var(--dur) var(--ease);
    position: relative;
    overflow: hidden;
}

/* 主要按钮 */
.u-btn--primary {
    background: var(--brand);
    color: #fff;
    border-color: var(--brand);
    box-shadow: var(--shadow-brand);
}
.u-btn--primary:hover {
    background: var(--brand-700);
    border-color: var(--brand-700);
    transform: translateY(-2px);
    box-shadow: var(--shadow-brand-strong);
}
.u-btn--primary:active {
    transform: translateY(0) scale(0.98);
}

/* 次要按钮 */
.u-btn--secondary {
    background: var(--bg-card, #fff);
    color: var(--slate-600);
    border-color: var(--line);
}
.u-btn--secondary:hover {
    border-color: #cbd5e1;
    color: var(--slate-700);
    box-shadow: var(--shadow-sm);
}

/* 幽灵按钮（品牌色描边） */
.u-btn--ghost {
    background: transparent;
    color: var(--brand);
    border: 1.5px solid var(--brand);
    box-shadow: 0 0 0 0 rgba(37, 99, 235, 0);
}
.u-btn--ghost:hover {
    background: var(--brand);
    color: white;
    box-shadow: var(--brand-glow);
    transform: translateY(-2px);
}

/* 渐变按钮（用于会员 CTA） */
.u-btn--gradient-warm {
    background: var(--gradient-warm);
    color: white;
    border: none;
    box-shadow: var(--warm-glow);
    font-weight: 700;
}
.u-btn--gradient-warm:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 16px 32px rgba(245, 158, 11, 0.4);
}

/* 品牌渐变按钮 */
.u-btn--gradient-brand {
    background: var(--gradient-brand);
    color: white;
    border: none;
    box-shadow: var(--shadow-brand);
}
.u-btn--gradient-brand:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-brand-strong);
}

/* 图标按钮（方形） */
.u-btn--icon {
    width: 44px;
    height: 44px;
    padding: 0;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

/* 波纹点击效果容器（通用定义，防止影响任意按钮布局） */
.ripple,
.u-btn .ripple {
    position: absolute !important;
    border-radius: 50% !important;
    background: rgba(255, 255, 255, 0.35) !important;
    transform: scale(0) !important;
    animation: ripple-effect 0.6s ease-out !important;
    pointer-events: none !important;
    z-index: 10 !important;
}
@keyframes ripple-effect {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* ============================================================
 * 链接动画系统
 * ============================================================ */
.link-animated {
    position: relative;
    text-decoration: none !important;
    color: inherit;
}
.link-animated::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: currentColor;
    transition: width var(--dur) var(--ease);
}
.link-animated:hover::after {
    width: 100%;
}

/* 链接箭头动画 */
.link-arrow {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    transition: gap var(--dur) var(--ease);
}
.link-arrow:hover {
    gap: 0.625rem;
}
.link-arrow svg,
.link-arrow i {
    transition: transform var(--dur) var(--ease);
}
.link-arrow:hover svg,
.link-arrow:hover i {
    transform: translateX(3px);
}

/* ============================================================
 * 表单元素增强
 * ============================================================ */
input:not([type="checkbox"]):not([type="radio"]),
select,
textarea {
    transition: border-color var(--dur-fast) var(--ease),
                box-shadow var(--dur-fast) var(--ease),
                background-color var(--dur) var(--ease);
    background-color: var(--bg-card, #fff);
    border-color: var(--line);
    color: var(--ink, #0f172a);
}

/* 输入框聚焦光晕 */
.input-focus-ring:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12),
                0 0 0 1px var(--brand);
    border-color: var(--brand);
}

/* ============================================================
 * 骨架屏加载态
 * ============================================================ */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--line-2) 25%,
        var(--bg-card, #f8fafc) 50%,
        var(--line-2) 75%
    );
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: var(--radius-sm);
}
.skeleton--text {
    height: 1em;
    margin-bottom: 0.5em;
}
.skeleton--title {
    height: 1.5em;
    width: 60%;
    margin-bottom: 0.75em;
}
.skeleton--avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
}
.skeleton--img {
    width: 100%;
    height: 200px;
}
@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ============================================================
 * 滚动进度指示器
 * ============================================================ */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: var(--gradient-brand);
    width: 0%;
    z-index: 9999;
    transition: width 0.1s linear;
    pointer-events: none;
}

/* ============================================================
 * 入场渐显（配合 js/anim.js）
 * ============================================================ */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity var(--dur-slower) var(--ease),
        transform var(--dur-slower) var(--ease);
    will-change: opacity, transform;
}

.reveal.is-visible {
    opacity: 1;
    transform: none;
}

/* 无 JS / JS 未就绪时强制可见，永不隐藏内容 */
html:not(.js-ready) .reveal {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
}

/* ============================================================
 * 视差滚动支持
 * ============================================================ */
.parallax-layer {
    will-change: transform;
    transition: transform 0.5s var(--ease-out);
}

/* ============================================================
 * 页面转场淡入
 * ============================================================ */
.fade-in {
    animation: fadeInUp 0.6s var(--ease) both;
}
.fade-in-delay-1 { animation-delay: 0.1s; }
.fade-in-delay-2 { animation-delay: 0.2s; }
.fade-in-delay-3 { animation-delay: 0.3s; }
.fade-in-delay-4 { animation-delay: 0.4s; }

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================================
 * 主题切换按钮
 * ============================================================ */
.theme-toggle {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    border: 1px solid var(--line);
    background: var(--bg-card, #fff);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all var(--dur) var(--ease);
    color: var(--slate-500);
    box-sizing: border-box;
    position: relative;
    overflow: hidden;
}
.theme-toggle:hover {
    border-color: var(--brand);
    color: var(--brand);
    box-shadow: var(--shadow-sm);
}
.theme-toggle .icon-dark,
.theme-toggle .icon-light,
.theme-toggle .lucide-moon,
.theme-toggle .lucide-sun {
    transition: transform var(--dur) var(--ease);
}
.theme-toggle:hover .icon-dark,
.theme-toggle:hover .lucide-moon {
    transform: rotate(15deg);
}
.theme-toggle:hover .icon-light,
.theme-toggle:hover .lucide-sun {
    transform: rotate(-15deg);
}
[data-theme="dark"] .theme-toggle .icon-light,
[data-theme="dark"] .theme-toggle .lucide-sun,
[data-theme="dark"] .theme-toggle [data-lucide="sun"] {
    display: none !important;
}
[data-theme="dark"] .theme-toggle .icon-dark,
[data-theme="dark"] .theme-toggle .lucide-moon,
[data-theme="dark"] .theme-toggle [data-lucide="moon"] {
    display: block !important;
}
:root:not([data-theme="dark"]) .theme-toggle .icon-light,
:root:not([data-theme="dark"]) .theme-toggle .lucide-sun,
:root:not([data-theme="dark"]) .theme-toggle [data-lucide="sun"] {
    display: block !important;
}
:root:not([data-theme="dark"]) .theme-toggle .icon-dark,
:root:not([data-theme="dark"]) .theme-toggle .lucide-moon,
:root:not([data-theme="dark"]) .theme-toggle [data-lucide="moon"] {
    display: none !important;
}

/* ============================================================
 * 全站暗色模式适配规范 (Dark Mode Global Adaptations)
 * ============================================================ */
[data-theme="dark"] {
    color-scheme: dark;
}

[data-theme="dark"] body {
    background-color: var(--bg-primary, #0f172a);
    color: var(--ink, #f1f5f9);
}

/* 主体容器与背景 */
[data-theme="dark"] .bg-white {
    background-color: var(--bg-secondary, #1e293b) !important;
}
[data-theme="dark"] .bg-slate-50 {
    background-color: var(--bg-primary, #0f172a) !important;
}
[data-theme="dark"] .bg-slate-100 {
    background-color: var(--bg-tertiary, #334155) !important;
    color: var(--text-secondary, #cbd5e1) !important;
}
[data-theme="dark"] .bg-slate-200 {
    background-color: var(--bg-tertiary, #334155) !important;
}
[data-theme="dark"] .bg-white\/80 {
    background-color: rgba(30, 41, 59, 0.85) !important;
}

/* 边框体系 */
[data-theme="dark"] .border-slate-100,
[data-theme="dark"] .border-slate-200,
[data-theme="dark"] .border-slate-200\/70,
[data-theme="dark"] .border-slate-200\/80,
[data-theme="dark"] .border-slate-300 {
    border-color: var(--line, #334155) !important;
}
[data-theme="dark"] .border-dashed {
    border-color: var(--line, #334155) !important;
}

/* 阴影 */
[data-theme="dark"] .shadow-sm,
[data-theme="dark"] .shadow-md,
[data-theme="dark"] .shadow-lg,
[data-theme="dark"] .shadow-\[0_1px_3px_rgba\(0\,0\,0\,0\.04\)\] {
    box-shadow: var(--shadow) !important;
}

/* 文字层级颜色 */
[data-theme="dark"] .text-slate-900,
[data-theme="dark"] .text-slate-800 {
    color: var(--text-primary, #f1f5f9) !important;
}
[data-theme="dark"] .text-slate-700,
[data-theme="dark"] .text-slate-600,
[data-theme="dark"] .text-slate-500 {
    color: var(--text-secondary, #cbd5e1) !important;
}
[data-theme="dark"] .text-slate-400,
[data-theme="dark"] .text-slate-300 {
    color: var(--text-muted, #94a3b8) !important;
}

/* 品牌色与主要交互色 */
[data-theme="dark"] .text-blue-600 { color: var(--brand, #60a5fa) !important; }
[data-theme="dark"] .text-blue-500 { color: #93c5fd !important; }
[data-theme="dark"] .bg-blue-600 { background-color: var(--brand-700, #3b82f6) !important; }
[data-theme="dark"] .bg-blue-50 { background-color: rgba(96, 165, 250, 0.14) !important; }
[data-theme="dark"] .bg-blue-50\/40,
[data-theme="dark"] .bg-blue-50\/60 { background-color: rgba(96, 165, 250, 0.12) !important; }
[data-theme="dark"] .border-blue-100,
[data-theme="dark"] .border-blue-200 { border-color: var(--brand-700, #3b82f6) !important; }
[data-theme="dark"] .hover\:bg-blue-50:hover,
[data-theme="dark"] .hover\:bg-blue-50\/40:hover { background-color: rgba(96, 165, 250, 0.18) !important; }
[data-theme="dark"] .hover\:text-blue-600:hover { color: var(--brand, #60a5fa) !important; }
[data-theme="dark"] .hover\:bg-slate-50:hover,
[data-theme="dark"] .hover\:bg-slate-200:hover { background-color: var(--bg-tertiary, #334155) !important; }

/* 多彩徽标与图标方块暗色适配 */
[data-theme="dark"] .bg-red-50 { background-color: rgba(239, 68, 68, 0.15) !important; }
[data-theme="dark"] .bg-indigo-50 { background-color: rgba(99, 102, 241, 0.15) !important; }
[data-theme="dark"] .bg-green-50 { background-color: rgba(34, 197, 94, 0.15) !important; }
[data-theme="dark"] .bg-orange-50 { background-color: rgba(249, 115, 22, 0.15) !important; }
[data-theme="dark"] .bg-teal-50 { background-color: rgba(20, 184, 166, 0.15) !important; }
[data-theme="dark"] .bg-sky-50 { background-color: rgba(14, 165, 233, 0.15) !important; }
[data-theme="dark"] .bg-rose-50 { background-color: rgba(244, 63, 94, 0.15) !important; }
[data-theme="dark"] .bg-amber-50 { background-color: rgba(245, 158, 11, 0.15) !important; }
[data-theme="dark"] .bg-purple-50 { background-color: rgba(168, 85, 247, 0.15) !important; }
[data-theme="dark"] .bg-fuchsia-50 { background-color: rgba(217, 70, 239, 0.15) !important; }
[data-theme="dark"] .bg-violet-50 { background-color: rgba(139, 92, 246, 0.15) !important; }
[data-theme="dark"] .bg-emerald-50 { background-color: rgba(16, 185, 129, 0.15) !important; }
[data-theme="dark"] .bg-cyan-50 { background-color: rgba(6, 182, 212, 0.15) !important; }
[data-theme="dark"] .bg-pink-50 { background-color: rgba(236, 72, 153, 0.15) !important; }

[data-theme="dark"] .border-blue-100 { border-color: rgba(59, 130, 246, 0.3) !important; }
[data-theme="dark"] .border-red-100 { border-color: rgba(239, 68, 68, 0.3) !important; }
[data-theme="dark"] .border-indigo-100 { border-color: rgba(99, 102, 241, 0.3) !important; }
[data-theme="dark"] .border-green-100 { border-color: rgba(34, 197, 94, 0.3) !important; }
[data-theme="dark"] .border-orange-100 { border-color: rgba(249, 115, 22, 0.3) !important; }
[data-theme="dark"] .border-teal-100 { border-color: rgba(20, 184, 166, 0.3) !important; }
[data-theme="dark"] .border-sky-100 { border-color: rgba(14, 165, 233, 0.3) !important; }
[data-theme="dark"] .border-rose-100 { border-color: rgba(244, 63, 94, 0.3) !important; }
[data-theme="dark"] .border-amber-100 { border-color: rgba(245, 158, 11, 0.3) !important; }
[data-theme="dark"] .border-purple-100 { border-color: rgba(168, 85, 247, 0.3) !important; }
[data-theme="dark"] .border-fuchsia-100 { border-color: rgba(217, 70, 239, 0.3) !important; }
[data-theme="dark"] .border-violet-100 { border-color: rgba(139, 92, 246, 0.3) !important; }
[data-theme="dark"] .border-emerald-100 { border-color: rgba(16, 185, 129, 0.3) !important; }
[data-theme="dark"] .border-cyan-100 { border-color: rgba(6, 182, 212, 0.3) !important; }
[data-theme="dark"] .border-pink-100 { border-color: rgba(236, 72, 153, 0.3) !important; }

[data-theme="dark"] .text-emerald-700,
[data-theme="dark"] .text-emerald-600,
[data-theme="dark"] .text-emerald-500 { color: #34d399 !important; }
[data-theme="dark"] .text-red-600 { color: #f87171 !important; }
[data-theme="dark"] .text-indigo-600 { color: #818cf8 !important; }
[data-theme="dark"] .text-green-600 { color: #4ade80 !important; }
[data-theme="dark"] .text-orange-600 { color: #fb923c !important; }
[data-theme="dark"] .text-teal-600 { color: #2dd4bf !important; }
[data-theme="dark"] .text-sky-600 { color: #38bdf8 !important; }
[data-theme="dark"] .text-rose-600 { color: #fb7185 !important; }
[data-theme="dark"] .text-amber-600 { color: #fbbf24 !important; }
[data-theme="dark"] .text-purple-600 { color: #c084fc !important; }
[data-theme="dark"] .text-fuchsia-600 { color: #e879f9 !important; }
[data-theme="dark"] .text-violet-500,
[data-theme="dark"] .text-violet-600 { color: #a78bfa !important; }
[data-theme="dark"] .text-cyan-600 { color: #22d3ee !important; }
[data-theme="dark"] .text-pink-600 { color: #f472b6 !important; }

/* 头部导航与移动端菜单 */
[data-theme="dark"] header {
    background-color: var(--bg-secondary, #1e293b) !important;
    border-color: var(--line, #334155) !important;
}
[data-theme="dark"] header img[src*="logo"],
[data-theme="dark"] footer img[src*="logo"] {
    background: transparent !important;
    padding: 0 !important;
    box-shadow: none !important;
    border-radius: 0 !important;
    filter: brightness(1.06) contrast(1.02);
}
[data-theme="dark"] #mobile-menu {
    background-color: var(--bg-secondary, #1e293b) !important;
    border-color: var(--line, #334155) !important;
}
[data-theme="dark"] #mobile-menu a {
    color: var(--text-secondary, #cbd5e1);
}
[data-theme="dark"] #mobile-menu a:hover {
    background-color: var(--bg-tertiary, #334155);
}

/* 顶部横幅渐变 */
[data-theme="dark"] .bg-gradient-to-r.from-blue-50.to-white {
    background-image: linear-gradient(to right, var(--bg-secondary, #1e293b), var(--bg-primary, #0f172a)) !important;
}

/* 页脚与底部栏 */
[data-theme="dark"] footer {
    background-color: var(--bg-secondary, #1e293b) !important;
    border-color: var(--line, #334155) !important;
}
[data-theme="dark"] footer .border-t {
    border-color: var(--line, #334155) !important;
}
[data-theme="dark"] footer .text-slate-400 {
    color: var(--text-muted, #94a3b8) !important;
}
[data-theme="dark"] footer .text-slate-500 {
    color: var(--text-secondary, #cbd5e1) !important;
}
[data-theme="dark"] footer .text-slate-600 {
    color: var(--text-secondary, #cbd5e1) !important;
}
[data-theme="dark"] footer .text-slate-800,
[data-theme="dark"] footer .text-slate-900 {
    color: var(--text-primary, #f1f5f9) !important;
}
[data-theme="dark"] footer .bg-slate-50 {
    background-color: var(--bg-tertiary, #334155) !important;
    color: var(--text-secondary, #cbd5e1) !important;
}
[data-theme="dark"] footer .bg-blue-50 {
    background-color: rgba(59, 130, 246, 0.16) !important;
    color: #60a5fa !important;
}
[data-theme="dark"] footer .bg-green-50 {
    background-color: rgba(16, 185, 129, 0.16) !important;
    color: #34d399 !important;
}

/* 右下角固定联系栏 */
[data-theme="dark"] .contact-rail,
[data-theme="dark"] .contact-rail__qr {
    background: var(--bg-card, #1e293b) !important;
    border-color: var(--line, #334155) !important;
    color: var(--text-primary, #f1f5f9) !important;
    box-shadow: var(--shadow-md) !important;
}
[data-theme="dark"] .contact-rail__item {
    color: var(--text-secondary, #cbd5e1) !important;
}
[data-theme="dark"] .contact-rail__item + .contact-rail__item {
    border-top-color: var(--line, #334155) !important;
}
[data-theme="dark"] .contact-rail__item--phone:hover {
    background: var(--bg-tertiary, #334155) !important;
    color: var(--brand, #60a5fa) !important;
}

/* ============================================================
 * 减弱动效降级
 * ============================================================ */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    .reveal,
    .fade-in {
        opacity: 1 !important;
        transform: none !important;
        animation: none !important;
        transition: none !important;
    }

    *,
    *::before,
    *::after {
        animation-duration: .001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .001ms !important;
    }

    .scroll-progress {
        display: none;
    }

    .parallax-layer {
        transform: none !important;
    }
}

/* ============================================================
 * 焦点可见性（无障碍）
 * ============================================================ */
*:focus-visible {
    outline: 2px solid var(--brand);
    outline-offset: 2px;
}

/* 移除默认焦点（鼠标点击时） */
*:focus:not(:focus-visible) {
    outline: none;
}

/* ============================================================
 * 选择高亮样式
 * ============================================================ */
::selection {
    background: rgba(37, 99, 235, 0.2);
    color: inherit;
}

/* ============================================================
 * 滚动条美化
 * ============================================================ */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--line-2);
}
::-webkit-scrollbar-thumb {
    background: var(--slate-400);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--slate-500);
}

/* 暗色模式滚动条 */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) ::-webkit-scrollbar-track {
        background: var(--bg-tertiary);
    }
    :root:not([data-theme="light"]) ::-webkit-scrollbar-thumb {
        background: var(--slate-700);
    }
}

[data-theme="dark"] ::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
}
[data-theme="dark"] ::-webkit-scrollbar-thumb {
    background: var(--slate-700);
}

/* ============================================================
 * 自定义光标主题（统计符号风格）
 * ============================================================ */
.custom-cursor {
    cursor: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%232563eb' stroke-width='2'%3E%3Cpath d='M12 2L2 7l10 5 10-5-10-5z'/%3E%3Cpath d='M2 17l10 5 10-5'/%3E%3Cpath d='M2 12l10 5 10-5'/%3E%3C/svg%3E") 12 12, auto;
}

/* 链接和按钮的自定义光标 */
a, button, [role="button"], .u-btn, .hero-button {
    cursor: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='%232563eb'%3E%3Ccircle cx='12' cy='12' r='4'/%3E%3Ccircle cx='12' cy='12' r='9' stroke='%232563eb' stroke-width='1.5' fill='none'/%3E%3C/svg%3E") 12 12, pointer;
}

/* 文本选择区域的光标 */
input, textarea, [contenteditable] {
    cursor: text;
}

/* ============================================================
 * 工具提示（Tooltip）样式
 * ============================================================
[data-tooltip] {
    position: relative;
}
[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(4px);
    padding: 6px 12px;
    background: var(--ink, #0f172a);
    color: var(--bg-primary, #fff);
    font-size: 12px;
    font-weight: 500;
    border-radius: 8px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all var(--dur-fast) var(--ease);
    pointer-events: none;
    z-index: 1000;
}
[data-tooltip]:hover::after {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}