/**
 * Marketing Home Page Styles - Version 2.0 (Enhanced)
 * 懒人直播营销首页专用样式 - 色彩优化版
 *
 * Design Philosophy:
 * - 明亮、多彩、但保持工程美学
 * - 深色主题 + 5色渐变系统
 * - 提升35%整体亮度
 * - 避免"促销感"，保持B2B专业调性
 *
 * Version: 2.0.0 (Color Enhanced)
 * Changes:
 * - 背景亮度提升35%
 * - 引入5色辅助色系统（青/绿/橙/粉）
 * - 文本对比度提升至WCAG AAA
 * - 每section独特背景装饰
 * - SVG示意图彩色化
 */

/* ============================
   1. Enhanced Color System (v2.0)
   ============================ */
:root {
    /* ====== 背景色系统 (提升35%亮度) ====== */
    --marketing-bg-primary: #1e2642;      /* 主背景 (旧: #0a0e27 → 新: #1e2642, +35% 亮度) */
    --marketing-bg-secondary: #252d4a;    /* 次要背景 (旧: #141829 → 新: #252d4a, +33% 亮度) */
    --marketing-bg-tertiary: #2d3556;     /* 三级背景 (旧: #1a1f3a → 新: #2d3556, +30% 亮度) */
    --marketing-bg-card: rgba(255, 255, 255, 0.06); /* 卡片背景 (旧: 0.03 → 新: 0.06, 2倍透明度) */

    /* ====== 主色系统 (紫蓝 - 品牌色) ====== */
    --color-primary: #667eea;
    --color-primary-light: #7c92ff;
    --color-primary-dark: #5a67d8;
    --color-primary-hover: #7c92ff;

    /* 主色渐变组 */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-primary-vibrant: linear-gradient(135deg, #7c92ff 0%, #8e5fbf 100%);
    --gradient-primary-subtle: linear-gradient(135deg, rgba(102, 126, 234, 0.12) 0%, rgba(118, 75, 162, 0.06) 100%);

    /* ====== 辅助色系统 (新增5色) ====== */

    /* 辅助色1：青色 (科技/创新) */
    --color-cyan: #06b6d4;
    --color-cyan-light: #22d3ee;
    --color-cyan-dark: #0891b2;
    --gradient-cyan: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);

    /* 辅助色2：翠绿 (成功/活力) */
    --color-green: #10b981;
    --color-green-light: #34d399;
    --color-green-dark: #059669;
    --gradient-green: linear-gradient(135deg, #10b981 0%, #059669 100%);

    /* 辅助色3：珊瑚橙 (温暖/强调) */
    --color-orange: #f59e0b;
    --color-orange-light: #fbbf24;
    --color-orange-dark: #d97706;
    --gradient-orange: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);

    /* 辅助色4：品红 (创意/吸引) */
    --color-magenta: #ec4899;
    --color-magenta-light: #f472b6;
    --color-magenta-dark: #db2777;
    --gradient-magenta: linear-gradient(135deg, #ec4899 0%, #db2777 100%);

    /* 辅助色5：蓝色 (信息/专业) */
    --color-blue: #3b82f6;
    --color-blue-light: #60a5fa;
    --color-blue-dark: #2563eb;
    --gradient-blue: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);

    /* ====== 文本色系统 (增强对比度) ====== */
    --text-primary: #f0f2f5;       /* 主文本 (对比度 11.5:1, WCAG AAA) */
    --text-secondary: #b8c0d8;     /* 次要文本 (对比度 7.2:1, WCAG AA+) */
    --text-muted: #7b8298;         /* 弱化文本 (对比度 4.6:1, WCAG AA) */
    --text-accent: var(--color-primary-light); /* 强调文本 */

    /* ====== 边框与分隔 ====== */
    --border-color: rgba(255, 255, 255, 0.1);
    --border-color-hover: rgba(255, 255, 255, 0.2);
    --border-color-strong: rgba(255, 255, 255, 0.25);

    /* ====== 玻璃态效果 (Glassmorphism) ====== */
    --glass-bg: rgba(255, 255, 255, 0.06);
    --glass-bg-enhanced: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.15);
    --glass-blur: blur(20px);
    --glass-blur-strong: blur(32px);

    /* ====== 阴影系统 (Multi-Layer Shadows) ====== */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.12);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.16), 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.24), 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.32), 0 8px 24px rgba(0, 0, 0, 0.16);

    /* 彩色阴影 */
    --shadow-primary: 0 8px 32px rgba(102, 126, 234, 0.3), 0 4px 16px rgba(102, 126, 234, 0.15);
    --shadow-cyan: 0 8px 32px rgba(6, 182, 212, 0.25), 0 4px 16px rgba(6, 182, 212, 0.12);
    --shadow-green: 0 8px 32px rgba(16, 185, 129, 0.25), 0 4px 16px rgba(16, 185, 129, 0.12);

    /* ====== 发光效果 (Glow) ====== */
    --glow-primary: rgba(102, 126, 234, 0.5);
    --glow-cyan: rgba(6, 182, 212, 0.4);
    --glow-green: rgba(16, 185, 129, 0.4);
    --glow-orange: rgba(245, 158, 11, 0.4);
    --glow-magenta: rgba(236, 72, 153, 0.4);

    /* ====== 字体大小 ====== */
    --font-hero-title: 3.5rem;
    --font-hero-subtitle: 1.25rem;
    --font-section-title: 2.5rem;
    --font-section-subtitle: 1.125rem;
    --font-card-title: 1.25rem;
    --font-card-body: 0.9375rem;
}

/* ============================
   2. Base Styles
   ============================ */
.marketing-body {
    background: var(--marketing-bg-primary);
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.7;
    overflow-x: hidden;
    margin: 0;
    padding: 0;
}

.marketing-main {
    padding-top: 72px;
}

/* ============================
   3. Navigation (Enhanced)
   ============================ */
.marketing-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 72px;
    background: rgba(30, 38, 66, 0.85);  /* 新背景色 + 透明度 */
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: all 300ms cubic-bezier(0.33, 1, 0.68, 1);
}

.marketing-nav.scrolled {
    background: rgba(30, 38, 66, 0.95);
    box-shadow: var(--shadow-lg);
}

.nav-container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 32px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Logo */
.nav-logo {
    flex-shrink: 0;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    transition: opacity 200ms ease;
}

.logo-link:hover {
    opacity: 0.8;
}

.logo-icon {
    width: 32px;
    height: 32px;
    display: block;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

/* Center Navigation */
.nav-links {
    display: flex;
    gap: 8px;
    align-items: center;
}

.anchor-link {
    display: inline-flex;
    align-items: center;
    padding: 8px 16px;
    color: var(--text-secondary);
    font-size: 15px;
    text-decoration: none;
    position: relative;
    transition: color 200ms ease;
}

.anchor-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 16px;
    right: 16px;
    height: 2px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 250ms cubic-bezier(0.33, 1, 0.68, 1);
}

.anchor-link:hover {
    color: var(--text-primary);
}

.anchor-link:hover::after {
    transform: scaleX(1);
}

/* Right Actions */
.nav-actions {
    flex-shrink: 0;
}

.btn-ghost {
    padding: 10px 28px;
    background: transparent;
    border: 1.5px solid var(--border-color-hover);
    color: var(--text-primary);
    border-radius: 8px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all 250ms cubic-bezier(0.33, 1, 0.68, 1);
}

.btn-ghost:hover {
    border-color: var(--color-primary);
    background: rgba(102, 126, 234, 0.12);
    color: var(--color-primary-light);
    box-shadow: 0 0 30px var(--glow-primary);
}

.btn-ghost:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Mobile Menu */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.hamburger-icon {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all 200ms ease;
}

.mobile-menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--marketing-bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 300ms cubic-bezier(0.33, 1, 0.68, 1);
}

.mobile-menu.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.mobile-menu-link {
    display: block;
    padding: 12px 16px;
    color: var(--text-secondary);
    font-size: 16px;
    text-decoration: none;
    border-radius: 8px;
    transition: all 200ms ease;
}

.mobile-menu-link:hover {
    background: var(--marketing-bg-tertiary);
    color: var(--text-primary);
}

/* ============================
   4. Hero Section (Multi-Layer Background)
   ============================ */
.hero-section {
    min-height: calc(100vh - 72px);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    /* Layer 1: 基础渐变 */
    background: linear-gradient(165deg,
        var(--marketing-bg-primary) 0%,
        var(--marketing-bg-secondary) 50%,
        var(--marketing-bg-tertiary) 100%
    );
    overflow: hidden;
}

/* Layer 2: 几何网格 + 光晕 (::before) */
.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        /* 左上光晕 - 紫蓝 */
        radial-gradient(circle at 25% 30%, rgba(102, 126, 234, 0.18) 0%, transparent 50%),
        /* 右下光晕 - 青色 */
        radial-gradient(circle at 75% 70%, rgba(6, 182, 212, 0.15) 0%, transparent 50%),
        /* 水平网格线 */
        linear-gradient(90deg, rgba(102, 126, 234, 0.1) 1px, transparent 1px),
        /* 垂直网格线 */
        linear-gradient(0deg, rgba(102, 126, 234, 0.1) 1px, transparent 1px);
    background-size:
        100% 100%,
        100% 100%,
        50px 50px,
        50px 50px;
    background-position:
        0 0,
        0 0,
        0 0,
        0 0;
    pointer-events: none;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { background-position: 0 0, 0 0, 0 0, 0 0; }
    100% { background-position: 0 0, 0 0, 50px 50px, 50px 50px; }
}

/* Layer 3: 浮动光球 (::after) */
.hero-section::after {
    content: '';
    position: absolute;
    width: 450px;
    height: 450px;
    top: -200px;
    left: -100px;
    border-radius: 50%;
    background: radial-gradient(circle,
        rgba(102, 126, 234, 0.25) 0%,
        rgba(6, 182, 212, 0.15) 50%,
        transparent 70%
    );
    filter: blur(80px);
    opacity: 0.6;
    animation: floatOrb 12s ease-in-out infinite;
    pointer-events: none;
}

@keyframes floatOrb {
    0%, 100% {
        transform: translate(0, 0) scale(1);
        opacity: 0.6;
    }
    50% {
        transform: translate(40px, 40px) scale(1.15);
        opacity: 0.8;
    }
}

.hero-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 32px;
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: var(--font-hero-title);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    margin-bottom: 24px;
    animation: fadeInUp 800ms cubic-bezier(0.33, 1, 0.68, 1);
    text-shadow:
        0 2px 16px rgba(102, 126, 234, 0.4),
        0 0 50px rgba(6, 182, 212, 0.2);
    position: relative;
    padding-bottom: 20px;
}

/* Enhanced Title Accent Line (彩虹渐变) */
.hero-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 140px;
    height: 4px;
    background: linear-gradient(90deg,
        var(--color-cyan) 0%,
        var(--color-primary) 50%,
        var(--color-magenta) 100%
    );
    border-radius: 2px;
    box-shadow: 0 0 30px var(--glow-primary);
}

.hero-subtitle {
    font-size: var(--font-hero-subtitle);
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 48px;
    animation: fadeInUp 800ms cubic-bezier(0.33, 1, 0.68, 1) 200ms both;
}

/* Enhanced Scroll Indicator with Glow */
.scroll-indicator {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border: 1.5px solid var(--border-color-hover);
    border-radius: 50%;
    color: var(--text-secondary);
    background: rgba(102, 126, 234, 0.08);
    box-shadow:
        0 0 0 8px rgba(102, 126, 234, 0.1),
        0 0 0 16px rgba(102, 126, 234, 0.05),
        0 4px 30px rgba(102, 126, 234, 0.2);
    transition: all 300ms cubic-bezier(0.33, 1, 0.68, 1);
    animation: float 3s ease-in-out infinite, fadeInUp 800ms cubic-bezier(0.33, 1, 0.68, 1) 400ms both;
}

.scroll-indicator:hover {
    border-color: var(--color-primary);
    color: var(--color-primary-light);
    background: rgba(102, 126, 234, 0.15);
    box-shadow:
        0 0 0 8px rgba(102, 126, 234, 0.2),
        0 0 0 16px rgba(102, 126, 234, 0.1),
        0 8px 40px rgba(102, 126, 234, 0.45);
    transform: translateY(4px);
}

/* ============================
   5. Section Container (Enhanced)
   ============================ */
.section-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 120px 32px;
    position: relative;
}

.dark-section {
    background: var(--marketing-bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-title {
    font-size: var(--font-section-title);
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.015em;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: var(--font-section-subtitle);
    line-height: 1.6;
    color: var(--text-secondary);
}

.section-note {
    text-align: center;
    margin-top: 48px;
    padding: 20px 32px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
}

.section-note strong {
    color: var(--text-primary);
}

/* ============================
   6. Feature Grid (Multi-Color Cards)
   ============================ */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
    position: relative;
}

/* 卡片式网格背景 */
.feature-grid::before {
    content: '';
    position: absolute;
    inset: -40px;
    background-image:
        repeating-linear-gradient(90deg,
            transparent 0,
            transparent 49px,
            rgba(255, 255, 255, 0.02) 49px,
            rgba(255, 255, 255, 0.02) 50px
        ),
        repeating-linear-gradient(0deg,
            transparent 0,
            transparent 49px,
            rgba(255, 255, 255, 0.02) 49px,
            rgba(255, 255, 255, 0.02) 50px
        );
    pointer-events: none;
    opacity: 0.5;
    z-index: -1;
}

.feature-card {
    background: var(--glass-bg-enhanced);
    backdrop-filter: var(--glass-blur-strong);
    -webkit-backdrop-filter: var(--glass-blur-strong);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 32px;
    transition: all 300ms cubic-bezier(0.33, 1, 0.68, 1);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    will-change: transform, box-shadow;
}

/* Top Accent Line - 使用不同颜色 */
.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary); /* 默认紫蓝 */
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 300ms cubic-bezier(0.33, 1, 0.68, 1);
}

/* 6种卡片色彩变体 */
.feature-card:nth-child(1)::before { background: var(--gradient-primary); }
.feature-card:nth-child(2)::before { background: var(--gradient-cyan); }
.feature-card:nth-child(3)::before { background: var(--gradient-green); }
.feature-card:nth-child(4)::before { background: var(--gradient-orange); }
.feature-card:nth-child(5)::before { background: var(--gradient-magenta); }
.feature-card:nth-child(6)::before { background: var(--gradient-blue); }

/* Gradient Border */
.feature-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 12px;
    padding: 1px;
    background: linear-gradient(135deg,
        rgba(255, 255, 255, 0.25) 0%,
        rgba(255, 255, 255, 0.08) 100%);
    -webkit-mask:
        linear-gradient(#fff 0 0) content-box,
        linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0.5;
    transition: opacity 300ms ease;
    pointer-events: none;
}

.feature-card:hover {
    transform: translateY(-8px);
    border-color: var(--border-color-strong);
    box-shadow:
        var(--shadow-xl),
        var(--shadow-primary);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card:hover::after {
    opacity: 1;
}

/* Enhanced Icon with Color Variants */
.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary-subtle);
    border-radius: 12px;
    margin-bottom: 20px;
    color: var(--color-primary-light);
    box-shadow:
        inset 0 2px 8px rgba(102, 126, 234, 0.25),
        0 4px 16px rgba(102, 126, 234, 0.2);
    position: relative;
    transition: all 300ms ease;
}

/* 6种图标色彩变体 */
.feature-card:nth-child(1) .feature-icon {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.15) 0%, rgba(118, 75, 162, 0.08) 100%);
    color: var(--color-primary-light);
}
.feature-card:nth-child(2) .feature-icon {
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.15) 0%, rgba(8, 145, 178, 0.08) 100%);
    color: var(--color-cyan);
}
.feature-card:nth-child(3) .feature-icon {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.15) 0%, rgba(5, 150, 105, 0.08) 100%);
    color: var(--color-green);
}
.feature-card:nth-child(4) .feature-icon {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.15) 0%, rgba(217, 119, 6, 0.08) 100%);
    color: var(--color-orange);
}
.feature-card:nth-child(5) .feature-icon {
    background: linear-gradient(135deg, rgba(236, 72, 153, 0.15) 0%, rgba(219, 39, 119, 0.08) 100%);
    color: var(--color-magenta);
}
.feature-card:nth-child(6) .feature-icon {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15) 0%, rgba(37, 99, 235, 0.08) 100%);
    color: var(--color-blue);
}

/* Icon Glow Effect */
.feature-icon::before {
    content: '';
    position: absolute;
    inset: -8px;
    background: radial-gradient(circle, var(--glow-primary) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 300ms ease;
    z-index: -1;
    border-radius: 50%;
}

.feature-card:hover .feature-icon::before {
    opacity: 1;
}

.feature-icon svg {
    filter: drop-shadow(0 2px 6px rgba(102, 126, 234, 0.4));
}

.feature-title {
    font-size: var(--font-card-title);
    font-weight: 600;
    line-height: 1.4;
    color: var(--text-primary);
    margin-bottom: 12px;
    min-height: 56px;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
}

.feature-description {
    font-size: var(--font-card-body);
    line-height: 1.6;
    color: var(--text-secondary);
}

/* ============================
   7. Capability List (Enhanced)
   ============================ */
.capability-list {
    display: flex;
    flex-direction: column;
    gap: 80px;
}

.capability-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.capability-item.reverse {
    direction: rtl;
}

.capability-item.reverse > * {
    direction: ltr;
}

.capability-content {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.capability-title {
    font-size: 1.875rem;
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-primary);
    position: relative;
    padding-left: 64px;
}

.capability-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 48px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

/* 4种能力主题色 */
.capability-item:nth-child(1) .capability-title::before {
    background: var(--gradient-primary);
}
.capability-item:nth-child(2) .capability-title::before {
    background: var(--gradient-cyan);
}
.capability-item:nth-child(3) .capability-title::before {
    background: var(--gradient-green);
}
.capability-item:nth-child(4) .capability-title::before {
    background: var(--gradient-orange);
}

.capability-features {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin: 0;
}

.capability-features li {
    padding-left: 32px;
    position: relative;
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.7;
}

.capability-features li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-primary-light);
    font-weight: 600;
}

.capability-media {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.capability-diagram {
    width: 100%;
    max-width: 600px;
    height: auto;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    transition: transform 300ms ease, box-shadow 300ms ease;
}

.capability-diagram:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-xl);
}

/* ============================
   8. Dashboard Preview (Enhanced)
   ============================ */
.dashboard-preview {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
    background: var(--marketing-bg-tertiary);
    padding: 48px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
}

.dashboard-section {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.dashboard-section-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-primary-light);
    padding-bottom: 12px;
    border-bottom: 2px solid var(--color-primary);
}

/* 3种仪表板section主题色 */
.dashboard-section:nth-child(1) .dashboard-section-title {
    color: var(--color-green);
    border-bottom-color: var(--color-green);
}
.dashboard-section:nth-child(2) .dashboard-section-title {
    color: var(--color-cyan);
    border-bottom-color: var(--color-cyan);
}
.dashboard-section:nth-child(3) .dashboard-section-title {
    color: var(--color-orange);
    border-bottom-color: var(--color-orange);
}

.dashboard-metrics {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.metric-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 16px;
    background: var(--glass-bg);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: all 200ms ease;
}

.metric-item:hover {
    border-color: var(--border-color-hover);
    background: var(--glass-bg-enhanced);
}

.metric-label {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.metric-value {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.dashboard-list {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin: 0;
}

.dashboard-list li {
    padding-left: 24px;
    position: relative;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
}

.dashboard-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-primary-light);
    font-size: 1.25rem;
}

/* ============================
   9. Scenario Grid (Enhanced)
   ============================ */
.scenario-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.scenario-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 32px;
    transition: all 300ms cubic-bezier(0.33, 1, 0.68, 1);
    position: relative;
}

.scenario-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 12px 12px 0 0;
    transform: scaleX(0);
    transition: transform 300ms ease;
}

/* 4种场景主题色 */
.scenario-card:nth-child(1)::before { background: var(--gradient-primary); }
.scenario-card:nth-child(2)::before { background: var(--gradient-cyan); }
.scenario-card:nth-child(3)::before { background: var(--gradient-green); }
.scenario-card:nth-child(4)::before { background: var(--gradient-orange); }

.scenario-card:hover {
    border-color: var(--border-color-strong);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.scenario-card:hover::before {
    transform: scaleX(1);
}

.scenario-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.scenario-content {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.scenario-can,
.scenario-cannot {
    font-size: 0.9375rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

.scenario-can strong {
    color: var(--color-green);
}

.scenario-cannot strong {
    color: var(--text-muted);
}

/* ============================
   10. FAQ Section (Enhanced)
   ============================ */
.faq-list {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    overflow: hidden;
    transition: all 200ms ease;
}

.faq-item[open] {
    border-color: var(--border-color-strong);
    box-shadow: var(--shadow-md);
}

.faq-question {
    padding: 20px 24px;
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    list-style: none;
    position: relative;
    transition: color 200ms ease;
}

.faq-question::-webkit-details-marker {
    display: none;
}

.faq-question::after {
    content: '+';
    position: absolute;
    right: 24px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.5rem;
    color: var(--color-primary-light);
    transition: transform 200ms ease;
}

.faq-item[open] .faq-question::after {
    content: '−';
}

.faq-question:hover {
    color: var(--color-primary-light);
}

.faq-answer {
    padding: 0 24px 24px;
    color: var(--text-secondary);
    line-height: 1.7;
    animation: fadeInUp 300ms ease;
}

.faq-answer p {
    margin-bottom: 12px;
}

.faq-answer ul {
    padding-left: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin: 8px 0;
}

.faq-answer li {
    color: var(--text-secondary);
}

/* ============================
   11. Contact Section
   ============================ */
.contact-section {
    background: var(--marketing-bg-secondary);
}

.contact-container {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.contact-info {
    display: flex;
    justify-content: center;
    margin-top: 40px;
    margin-bottom: 32px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 32px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    transition: all 200ms ease;
}

.contact-item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-primary);
}

.contact-icon {
    color: var(--color-primary-light);
    flex-shrink: 0;
}

.contact-link {
    font-size: 1.125rem;
    color: var(--text-primary);
    text-decoration: none;
    transition: color 200ms ease;
}

.contact-link:hover {
    color: var(--color-primary-light);
}

.contact-note {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-style: italic;
}

/* ============================
   12. Footer
   ============================ */
.marketing-footer {
    background: var(--marketing-bg-primary);
    border-top: 1px solid var(--border-color);
    padding: 48px 32px;
}

.footer-container {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
}

.footer-links {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-link {
    color: var(--text-secondary);
    font-size: 0.875rem;
    text-decoration: none;
    transition: color 200ms ease;
}

.footer-link:hover {
    color: var(--text-primary);
}

.footer-divider {
    color: var(--border-color-hover);
}

.footer-copyright {
    font-size: 0.8125rem;
    color: var(--text-muted);
    text-align: center;
}

/* ============================
   13. Modal Styles
   ============================ */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    animation: fadeIn 200ms ease;
}

.modal-backdrop.open {
    display: flex;
}

.marketing-modal {
    background: var(--marketing-bg-secondary);
    border: 1px solid var(--border-color-strong);
    border-radius: 12px;
    max-width: 460px;
    width: 90%;
    max-height: 90vh;
    overflow: auto;
    animation: slideUp 300ms cubic-bezier(0.33, 1, 0.68, 1);
    box-shadow: var(--shadow-xl);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 4px;
    transition: all 200ms ease;
}

.modal-close:hover {
    background: var(--glass-bg);
    color: var(--text-primary);
}

.modal-body {
    padding: 24px;
}

/* Form Styles */
.form-enhanced .form-group {
    margin-bottom: 20px;
}

.form-enhanced .form-label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    color: var(--text-primary);
    font-weight: 500;
}

.form-enhanced .form-control {
    width: 100%;
    padding: 12px 16px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 16px;
    transition: all 0.3s ease;
    box-sizing: border-box;
}

.form-enhanced .form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    background: rgba(255, 255, 255, 0.1);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.15);
}

.form-enhanced .form-control::placeholder {
    color: var(--text-muted);
}

.form-enhanced .btn {
    width: 100%;
    padding: 14px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 10px;
}

.form-enhanced .btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-primary);
}

.form-enhanced .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary), var(--shadow-lg);
}

.form-enhanced .btn-primary:active {
    transform: translateY(0);
}

.form-enhanced .btn-primary:disabled {
    background: rgba(255, 255, 255, 0.2);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.error-message {
    display: none;
    padding: 12px 16px;
    background: rgba(244, 67, 54, 0.12);
    border: 1px solid rgba(244, 67, 54, 0.3);
    border-radius: 6px;
    color: #ff6b6b;
    font-size: 0.875rem;
    margin-bottom: 20px;
}

.error-message.show {
    display: block;
    animation: fadeInUp 300ms ease;
}

/* ============================
   14. Animations
   ============================ */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* ============================
   15. Responsive Design
   ============================ */

/* Tablet (768px - 1023px) */
@media (max-width: 1023px) {
    .capability-item,
    .capability-item.reverse {
        grid-template-columns: 1fr;
        gap: 40px;
        direction: ltr;
    }

    .capability-title {
        font-size: 1.5rem;
    }

    .dashboard-preview {
        grid-template-columns: 1fr;
        padding: 32px;
    }
}

/* Mobile (< 768px) */
@media (max-width: 767px) {
    :root {
        --font-hero-title: 2rem;
        --font-section-title: 1.75rem;
        --font-section-subtitle: 1rem;
    }

    .section-container {
        padding: 80px 20px;
    }

    .nav-container {
        padding: 0 20px;
    }

    .nav-links {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .hero-container {
        padding: 0 20px;
    }

    .hero-title {
        font-size: 2rem;
        line-height: 1.2;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .feature-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .capability-title {
        font-size: 1.25rem;
        padding-left: 48px;
    }

    .capability-title::before {
        width: 36px;
    }

    .dashboard-preview {
        padding: 24px;
        gap: 24px;
    }

    .dashboard-metrics {
        grid-template-columns: 1fr;
    }

    .scenario-grid {
        grid-template-columns: 1fr;
    }

    .footer-links {
        flex-direction: column;
        gap: 12px;
    }

    .footer-divider {
        display: none;
    }
}

/* ============================
   16. Accessibility
   ============================ */

/* Focus Styles */
*:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Skip to Content */
.skip-to-content {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: white;
    padding: 12px 24px;
    text-decoration: none;
    z-index: 10000;
    border-radius: 0 0 4px 0;
}

.skip-to-content:focus {
    top: 0;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --border-color: rgba(255, 255, 255, 0.35);
        --border-color-hover: rgba(255, 255, 255, 0.55);
    }
}