/* ============================================
   CSS 变量系统 - 全局设计令牌
   ============================================ */
:root {
    /* 主色系 - 现代教育创新风🎓 */
    --primary-color: #5B4FE9;
    --primary-light: #7B6FFF;
    --primary-dark: #4839C7;
    
    /* 辅色系 */
    --secondary-color: #FF6B9D;
    --secondary-light: #FF8FB3;
    --secondary-dark: #E5578A;
    
    /* 文字颜色 */
    --text-dark: #333333;
    --text-light: #ffffff;
    --text-gray: #666666;
    --text-gray-light: #999999;
    
    /* 背景颜色 */
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --bg-dark: #343a40;
    --bg-gray: #f0f0f0;
    
    /* 边框颜色 */
    --border-color: #e0e0e0;
    --border-color-light: #f0f0f0;
    
    /* 间距系统 */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --spacing-3xl: 64px;
    
    /* 圆角系统 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* 阴影系统 */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.25);
    
    /* 字体系统 */
    --font-family-base: 'Microsoft YaHei', 'PingFang SC', 'Segoe UI', sans-serif;
    --font-family-heading: 'Microsoft YaHei', 'PingFang SC', sans-serif;
    --font-family-mono: 'Courier New', monospace;
    
    /* 字体大小 */
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-base: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    --font-size-3xl: 32px;
    --font-size-4xl: 40px;
    --font-size-5xl: 48px;
    --font-size-6xl: 56px;
    
    /* 行高 */
    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* 布局尺寸 */
    --header-height: 72px;
    --container-wide: 1320px;
    --container-narrow: 960px;
    --max-text-width: 720px;
    
    /* 过渡动画 */
    --transition-fast: 0.15s ease-in-out;
    --transition-base: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
    --transition-long: 0.6s ease;
    
    /* Z-index 层级 */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-tooltip: 600;

    /* 强调色与渐变 */
    --accent-color: #FFB547;
    --accent-secondary: #FFA033;
    --neutral-50: #f5f7fb;
    --neutral-100: #eef2f7;
    --neutral-200: #d7ddea;
    --neutral-300: #c3cad8;
    --neutral-700: #455168;
    --neutral-900: #1e2533;
    --gradient-primary: linear-gradient(135deg, #0056b3 0%, #003d82 100%);
    --gradient-primary-soft: linear-gradient(135deg, rgba(0, 86, 179, 0.95) 0%, rgba(0, 102, 204, 0.9) 100%);
    --gradient-secondary: linear-gradient(135deg, #28a745 0%, #0c9a46 100%);
    --gradient-surface: linear-gradient(120deg, #ffffff 0%, #f6f8fb 100%);
    --gradient-dark: linear-gradient(120deg, #0f1d33 0%, #1f3048 100%);
    
    /* 细节 */
    --divider-color: rgba(15, 37, 70, 0.08);
    --radius-pill: 999px;
    --shadow-soft: 0 24px 60px rgba(15, 37, 70, 0.12);
    --shadow-xl-soft: 0 30px 80px rgba(0, 36, 77, 0.18);
    --border-color-strong: rgba(27, 49, 78, 0.18);
}

/* ============================================
   全局样式重置
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--text-dark);
    background-color: var(--neutral-50);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

main {
    display: block;
}

/* 标题样式 */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-heading);
    font-weight: 600;
    line-height: var(--line-height-tight);
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: var(--font-size-5xl);
    margin-bottom: var(--spacing-lg);
}

h2 {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-lg);
}

h3 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-md);
}

h4 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-md);
}

h5 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
}

h6 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
}

/* 段落样式 */
p {
    margin-bottom: var(--spacing-md);
    color: var(--text-gray);
    line-height: var(--line-height-relaxed);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-base);
}

a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* 列表样式 */
ul, ol {
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

li {
    margin-bottom: var(--spacing-sm);
}

/* 图片样式 */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* 按钮重置 */
button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* 输入框重置 */
input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* ============================================
   容器与布局
   ============================================ */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.container-fluid {
    width: 100%;
    padding: 0 var(--spacing-md);
}

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

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

.container--compact {
    max-width: 860px;
}

/* 栅格系统 */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

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

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

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

.grid-auto-fit {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.grid-auto-fill {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
}

.flex {
    display: flex;
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.flex-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.flex-column {
    display: flex;
    flex-direction: column;
}

/* ============================================
   固定导航栏
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid transparent;
    box-shadow: var(--shadow-sm);
    z-index: var(--z-fixed);
    transition: background-color var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    border-bottom-color: var(--divider-color);
    box-shadow: var(--shadow-md);
}

.navbar-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    padding: 0 var(--spacing-xl);
}

.navbar-logo {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-decoration: none;
    color: var(--primary-color);
    line-height: 1.1;
}

.navbar-logo:hover {
    color: var(--primary-dark);
}

.navbar-logo__title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    letter-spacing: 0.6px;
}

.navbar-logo__tagline {
    margin-top: 2px;
    font-size: var(--font-size-xs);
    letter-spacing: 1.6px;
    text-transform: uppercase;
    color: rgba(0, 46, 92, 0.65);
}

.navbar-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
    align-items: center;
}

.navbar-item {
    position: relative;
}

.navbar-link {
    display: block;
    color: var(--text-dark);
    font-weight: 500;
    padding: var(--spacing-sm) 0;
    transition: color var(--transition-base);
}

.navbar-link:hover {
    color: var(--primary-color);
    text-decoration: none;
}

.navbar-link.active {
    color: var(--primary-dark);
    position: relative;
}

.navbar-link.active::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -12px;
    width: 100%;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: var(--radius-pill);
}

.navbar-cta {
    margin-left: var(--spacing-xl);
}

.navbar-item.navbar-cta .btn {
    padding: 10px 18px;
    border-radius: var(--radius-pill);
}

/* 二级下拉菜单 */
.navbar-dropdown {
    position: relative;
}

.navbar-dropdown > .navbar-link::after {
    content: '▼';
    font-size: 10px;
    margin-left: var(--spacing-sm);
    transition: transform var(--transition-base);
}

.navbar-dropdown:hover > .navbar-link::after {
    transform: rotate(-180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translate(-50%, -10px);
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid rgba(0, 46, 92, 0.08);
    border-radius: 14px;
    box-shadow: 0 24px 60px rgba(15, 37, 70, 0.18);
    min-width: 240px;
    list-style: none;
    padding: var(--spacing-sm);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base), transform var(--transition-base);
    z-index: var(--z-dropdown);
    margin-top: var(--spacing-sm);
    backdrop-filter: blur(8px);
}

.dropdown-menu::before {
    content: '';
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 20px;
    background: inherit;
    border-top: 1px solid rgba(0, 46, 92, 0.08);
    border-left: 1px solid rgba(0, 46, 92, 0.08);
    border-top-left-radius: 4px;
    transform-origin: center;
    transform: translate(-50%, 10px) rotate(45deg);
    z-index: -1;
}

.navbar-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, 0);
}

.dropdown-item {
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: 10px;
    color: var(--text-dark);
    transition: background-color var(--transition-base), color var(--transition-base);
}

.dropdown-item:hover {
    background: rgba(0, 86, 179, 0.08);
    color: var(--primary-dark);
    text-decoration: none;
}

.dropdown-item + .dropdown-item {
    margin-top: var(--spacing-xs);
}

.dropdown-item a {
    display: block;
    color: inherit;
}

/* 移动菜单按钮 */
.navbar-toggle {
    display: none;
    background: none;
    border: none;
    font-size: var(--font-size-xl);
    color: var(--text-dark);
    cursor: pointer;
}

/* ============================================
   按钮样式
   ============================================ */
.btn {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
    border: none;
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--text-light);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    text-decoration: none;
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: var(--text-light);
}

.btn-secondary:hover {
    background-color: var(--secondary-dark);
    text-decoration: none;
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: var(--text-light);
    text-decoration: none;
}

.btn-ghost {
    background-color: transparent;
    color: var(--text-dark);
    border: 1px solid var(--border-color);
}

.btn-ghost:hover {
    background-color: var(--bg-light);
    text-decoration: none;
}

.btn-sm {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--font-size-lg);
}

.btn-light {
    background-color: rgba(255, 255, 255, 0.18);
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.4);
}

.btn-light:hover {
    background-color: #ffffff;
    color: var(--primary-dark);
    text-decoration: none;
    box-shadow: var(--shadow-lg);
}

.btn-soft {
    background-color: rgba(0, 86, 179, 0.12);
    color: var(--primary-dark);
}

.btn-soft:hover {
    background-color: rgba(0, 86, 179, 0.18);
    text-decoration: none;
}

/* ============================================
   头部与英雄区
   ============================================ */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 6px 14px;
    border-radius: var(--radius-pill);
    font-size: var(--font-size-sm);
    font-weight: 600;
    letter-spacing: 0.4px;
    background-color: rgba(0, 86, 179, 0.12);
    color: var(--primary-dark);
}

.badge--light {
    background-color: rgba(255, 255, 255, 0.18);
    color: var(--text-light);
    border: 1px solid rgba(255, 255, 255, 0.25);
}

.badge--outline {
    background-color: transparent;
    border: 1px solid currentColor;
}

.badge--accent {
    background-color: rgba(247, 181, 0, 0.15);
    color: var(--accent-color);
}

.hero {
    position: relative;
    margin-top: var(--header-height);
    padding: calc(var(--spacing-3xl) + 40px) 0 var(--spacing-3xl);
    background: var(--gradient-primary-soft);
    color: var(--text-light);
    overflow: hidden;
}

.hero--compact {
    padding: var(--spacing-3xl) 0;
}

.hero--no-offset {
    margin-top: 0;
}

.hero--light {
    background: var(--gradient-surface);
    color: var(--text-dark);
}

.hero--dark {
    background: var(--gradient-dark);
    color: var(--text-light);
}

.hero--pattern::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.22), transparent 55%),
                radial-gradient(circle at 80% 30%, rgba(40, 167, 69, 0.2), transparent 60%);
    opacity: 0.9;
    pointer-events: none;
}

.hero--enterprise {
    background: linear-gradient(150deg, #f9fbff 0%, #e6efff 55%, #d5f6ff 100%);
    color: var(--text-dark);
    position: relative;
    overflow: hidden;
}

.hero--enterprise::after {
    content: '';
    position: absolute;
    inset: -200px -260px auto -260px;
    height: 480px;
    background: radial-gradient(circle at 30% 40%, rgba(0, 112, 210, 0.14), transparent 70%),
                radial-gradient(circle at 70% 60%, rgba(0, 180, 190, 0.12), transparent 72%);
    pointer-events: none;
}

.hero-glow {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
    z-index: 0;
}

.hero-glow__orb {
    position: absolute;
    width: 220px;
    height: 220px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, rgba(16, 99, 240, 0.28), transparent 65%);
    filter: blur(0);
    opacity: 0.7;
    transform: translate3d(0, 0, 0);
    animation: heroOrbFloat 14s ease-in-out infinite alternate;
}

.hero-glow__orb--one {
    top: 12%;
    left: 6%;
    animation-duration: 16s;
}

.hero-glow__orb--two {
    bottom: 8%;
    right: 12%;
    background: radial-gradient(circle at 60% 40%, rgba(0, 186, 173, 0.26), transparent 68%);
}

.hero-glow__orb--three {
    top: 50%;
    right: 38%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle at 50% 50%, rgba(250, 192, 64, 0.18), transparent 72%);
    animation-duration: 18s;
}

@keyframes heroOrbFloat {
    0% {
        transform: translate3d(-12px, 8px, 0) scale(0.95);
        opacity: 0.55;
    }
    50% {
        transform: translate3d(16px, -18px, 0) scale(1.05);
        opacity: 0.8;
    }
    100% {
        transform: translate3d(-10px, 12px, 0) scale(1);
        opacity: 0.6;
    }
}

@media (max-width: 768px) {
    .hero-glow__orb {
        width: 160px;
        height: 160px;
    }

    .hero-glow__orb--one {
        top: 6%;
        left: 12%;
    }

    .hero-glow__orb--two {
        right: 4%;
        bottom: 10%;
    }

    .hero-glow__orb--three {
        top: 58%;
        right: 12%;
        width: 220px;
        height: 220px;
    }
}

.hero-slim {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    max-width: 760px;
}

.hero-slim h1 {
    margin: 0;
    font-size: var(--font-size-5xl);
    line-height: 1.08;
    color: var(--text-dark);
}

.hero-slim p {
    margin: 0;
    color: var(--text-gray);
}

.hero-slim .lead {
    color: var(--text-gray);
    max-width: 640px;
}

.hero-slim__actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.page-home .hero-slim > * {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.8s cubic-bezier(0.19, 1, 0.22, 1), transform 0.8s cubic-bezier(0.19, 1, 0.22, 1);
}

.page-home.loaded .hero-slim > * {
    opacity: 1;
    transform: translateY(0);
}

.page-home .hero-slim > *:nth-child(1) { transition-delay: 0.15s; }
.page-home .hero-slim > *:nth-child(2) { transition-delay: 0.28s; }
.page-home .hero-slim > *:nth-child(3) { transition-delay: 0.4s; }
.page-home .hero-slim > *:nth-child(4) { transition-delay: 0.52s; }
.page-home .hero-slim > *:nth-child(5) { transition-delay: 0.64s; }

.hero-shell {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: var(--spacing-3xl);
    align-items: center;
    z-index: 1;
}

.hero-visual {
    position: relative;
    display: inline-block;
    justify-self: center;
    pointer-events: none;
}

.hero-visual__main {
    margin: 0;
    width: 360px;
    height: 360px;
    border-radius: 32px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.6);
    box-shadow: 0 28px 64px rgba(15, 37, 70, 0.18);
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-visual__main img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-badge {
    position: absolute;
    width: 220px;
    padding: var(--spacing-md);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(15, 37, 70, 0.08);
    box-shadow: 0 14px 36px rgba(15, 37, 70, 0.16);
    backdrop-filter: blur(12px);
}

.hero-badge--north { top: -32px; left: -16px; }
.hero-badge--south { bottom: -28px; left: 24px; }
.hero-badge--east { top: 90px; right: -36px; }

.hero-badge__title {
    display: block;
    font-weight: 600;
    font-size: var(--font-size-base);
    color: var(--primary-dark);
    margin-bottom: var(--spacing-xs);
}

.hero-badge p {
    margin: 0;
    font-size: var(--font-size-sm);
    color: var(--text-gray);
    line-height: var(--line-height-relaxed);
}

.section--visual {
    padding-top: var(--spacing-2xl);
    padding-bottom: var(--spacing-2xl);
}

.visual-showcase {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--spacing-xl);
}

.visual-card {
    position: relative;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 24px 60px rgba(15, 37, 70, 0.14);
    border: 1px solid rgba(15, 37, 70, 0.08);
    display: flex;
    flex-direction: column;
}

.visual-card img {
    width: 100%;
    height: 220px;
    object-fit: cover;
}

.visual-card__content {
    padding: var(--spacing-xl);
    background: #ffffff;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.visual-card__content h3 {
    margin: 0;
    font-size: var(--font-size-xl);
    color: var(--text-dark);
}

.visual-card__content p {
    margin: 0;
    color: var(--text-gray);
    line-height: var(--line-height-relaxed);
}

.global-floating {
    position: fixed;
    right: 32px;
    bottom: 140px;
    display: grid;
    gap: var(--spacing-md);
    z-index: var(--z-fixed);
}

.global-floating__item {
    display: grid;
    grid-template-columns: 48px minmax(0, 1fr);
    align-items: center;
    gap: var(--spacing-sm);
    width: 260px;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(15, 37, 70, 0.1);
    box-shadow: 0 16px 40px rgba(15, 37, 70, 0.12);
    color: var(--text-dark);
    text-decoration: none;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.global-floating__item:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 48px rgba(15, 37, 70, 0.16);
}

.global-floating__item--accent {
    background: rgba(255, 237, 205, 0.96);
    border-color: rgba(255, 199, 72, 0.4);
}

.global-floating__item--mint {
    background: rgba(207, 244, 236, 0.96);
    border-color: rgba(64, 201, 178, 0.35);
}

.global-floating__icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    font-weight: 700;
    background: rgba(0, 86, 179, 0.12);
    color: var(--primary-dark);
}

.global-floating__item--accent .global-floating__icon {
    background: rgba(255, 199, 72, 0.18);
    color: #b17000;
}

.global-floating__item--mint .global-floating__icon {
    background: rgba(64, 201, 178, 0.18);
    color: #178f78;
}

.global-floating__content {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.global-floating__content strong {
    font-size: var(--font-size-base);
    color: var(--text-dark);
}

.global-floating__content p {
    margin: 0;
    font-size: var(--font-size-sm);
    color: var(--text-gray);
}

.hero--canvas {
    position: relative;
    overflow: hidden;
}

.hero--canvas::after {
    content: '';
    position: absolute;
    inset: -120px -160px auto -160px;
    height: 420px;
    background: radial-gradient(ellipse at center, rgba(255, 255, 255, 0.25) 0%, rgba(255, 255, 255, 0.05) 55%, transparent 80%);
    opacity: 0.7;
    pointer-events: none;
}

.hero-slim {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    max-width: 820px;
}

.hero-slim h1 {
    margin: 0;
    font-size: var(--font-size-5xl);
    line-height: 1.08;
}

.hero-slim p {
    margin: 0;
    color: rgba(255, 255, 255, 0.88);
}

.hero__action-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.agenda-track {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--spacing-xl);
}

.agenda-card {
    background: #ffffff;
    border-radius: 24px;
    padding: var(--spacing-2xl);
    border: 1px solid rgba(15, 37, 70, 0.08);
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.agenda-card__header {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.agenda-card__tag {
    width: max-content;
    padding: 4px 12px;
    border-radius: var(--radius-pill);
    background: rgba(0, 86, 179, 0.1);
    color: var(--primary-dark);
    font-size: var(--font-size-sm);
    font-weight: 600;
    letter-spacing: 0.4px;
    text-transform: uppercase;
}

.agenda-card__tag--accent {
    background: rgba(247, 181, 0, 0.18);
    color: var(--accent-color);
}

.agenda-card__tag--success {
    background: rgba(40, 167, 69, 0.15);
    color: #17863c;
}

.agenda-card__header h3 {
    margin: 0;
    font-size: var(--font-size-2xl);
    color: var(--text-dark);
}

.agenda-card p {
    margin: 0;
    color: var(--text-gray);
    line-height: var(--line-height-relaxed);
}

.operating-system {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--spacing-xl);
}

.operating-system__layer {
    background: #ffffff;
    border-radius: 26px;
    padding: var(--spacing-2xl);
    border: 1px solid rgba(15, 37, 70, 0.08);
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.operating-system__title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.operating-system__title span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 14px;
    background: rgba(0, 86, 179, 0.1);
    color: var(--primary-dark);
    font-weight: 700;
}

.operating-system__title h3 {
    margin: 0;
    font-size: var(--font-size-xl);
}

.operating-system__content p {
    margin: 0;
    color: var(--text-gray);
    line-height: var(--line-height-relaxed);
}

.case-deck {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--spacing-xl);
}

.case-deck__item {
    background: #ffffff;
    border-radius: 24px;
    padding: var(--spacing-2xl);
    border: 1px solid rgba(15, 37, 70, 0.08);
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.case-deck__media {
    width: 100%;
    height: 220px;
    border-radius: 18px;
    overflow: hidden;
}

.case-deck__media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.case-deck__meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-size-sm);
    color: var(--text-gray-light);
    text-transform: uppercase;
    letter-spacing: 0.4px;
}

.case-deck__item h3 {
    margin: 0;
    font-size: var(--font-size-xl);
    color: var(--text-dark);
}

.case-deck__item p {
    margin: 0;
    color: var(--text-gray);
    line-height: var(--line-height-relaxed);
}

.voice-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--spacing-xl);
}

.voice-card {
    background: #ffffff;
    border-radius: 24px;
    padding: var(--spacing-2xl);
    border: 1px solid rgba(15, 37, 70, 0.08);
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.voice-card header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.voice-card h3 {
    margin: 0;
    font-size: var(--font-size-lg);
    color: var(--text-dark);
}

.voice-card__tag {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 4px 12px;
    border-radius: var(--radius-pill);
    background: rgba(0, 86, 179, 0.12);
    color: var(--primary-dark);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.voice-card__tag--accent {
    background: rgba(247, 181, 0, 0.18);
    color: var(--accent-color);
}

.voice-card__tag--success {
    background: rgba(40, 167, 69, 0.15);
    color: #17863c;
}

.voice-card blockquote {
    margin: 0;
    font-size: var(--font-size-lg);
    line-height: var(--line-height-relaxed);
    color: var(--text-dark);
}

.voice-card p {
    margin: 0;
    color: var(--text-gray);
}

.knowledge-hub {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    gap: var(--spacing-3xl);
    align-items: start;
}

.knowledge-hub__intro {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.knowledge-hub__cta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.knowledge-hub__cards {
    display: grid;
    gap: var(--spacing-lg);
}

.resource-card {
    background: #ffffff;
    border-radius: 20px;
    padding: var(--spacing-xl);
    border: 1px solid rgba(15, 37, 70, 0.08);
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.resource-card h3 {
    margin: 0;
    font-size: var(--font-size-lg);
    color: var(--text-dark);
}

.resource-card p {
    margin: 0;
    color: var(--text-gray);
}
.hero-flag {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 6px 16px;
    border-radius: var(--radius-pill);
    border: 1px solid rgba(0, 86, 179, 0.18);
    background: rgba(0, 86, 179, 0.12);
    color: var(--primary-dark);
    font-size: var(--font-size-sm);
    letter-spacing: 0.4px;
    text-transform: uppercase;
}
.hero > .container {
    position: relative;
    z-index: 1;
}

.hero__grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--spacing-3xl);
    align-items: center;
}

.hero__content {
    max-width: 560px;
}

.hero__title {
    font-size: var(--font-size-6xl);
    line-height: 1.08;
    margin-bottom: var(--spacing-lg);
}

.hero__description {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xl);
    max-width: var(--max-text-width);
}

.hero--light .hero__description {
    color: var(--text-gray);
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.hero__stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.hero__stat {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.hero__stat-value {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: #ffffff;
}

.hero__stat-label {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.75);
    letter-spacing: 0.4px;
}

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

.hero__media-card {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(12px);
    border-radius: 28px;
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-soft);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    max-width: 420px;
}

.hero__media-card h4 {
    color: #ffffff;
    margin-bottom: var(--spacing-sm);
}

.hero__media-card p {
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 0;
}

.hero__list {
    list-style: none;
    display: grid;
    gap: var(--spacing-md);
}

.hero__list li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    color: rgba(255, 255, 255, 0.9);
}

.hero__list-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.2);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.hero__list li strong {
    display: block;
    color: #ffffff;
    margin-bottom: var(--spacing-xs);
}

.hero__list li p {
    margin: 0;
    color: rgba(255, 255, 255, 0.8);
    line-height: var(--line-height-relaxed);
}

.hero__badge {
    margin-bottom: var(--spacing-lg);
}

.page-hero {
    margin-top: var(--header-height);
    padding: var(--spacing-3xl) 0;
    background: var(--gradient-primary);
    color: var(--text-light);
    position: relative;
    overflow: hidden;
}

.page-hero--center {
    text-align: center;
}

.page-hero--light {
    background: var(--gradient-surface);
    color: var(--text-dark);
}

.page-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at right top, rgba(0, 102, 204, 0.25), transparent 55%);
    pointer-events: none;
}

.page-hero > .container {
    position: relative;
    z-index: 1;
}

.page-hero__title {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-md);
    color: currentColor;
}

.page-hero__description {
    max-width: var(--max-text-width);
    margin: 0 auto;
    color: inherit;
    opacity: 0.9;
}
/* ============================================
   卡片组件
   ============================================ */
.card {
    background-color: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: all var(--transition-base);
}

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

.card-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
    overflow: hidden;
}

.card-content {
    padding: var(--spacing-lg);
}

.card-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-dark);
}

.card-description {
    color: var(--text-gray);
    margin-bottom: var(--spacing-md);
    line-height: var(--line-height-relaxed);
}

.card--outlined {
    border: 1px solid var(--border-color);
    box-shadow: none;
}

.card--gradient {
    background: var(--gradient-surface);
}

.card--stat {
    text-align: center;
    padding: var(--spacing-2xl);
}

.card__header {
    padding: var(--spacing-lg) var(--spacing-lg) var(--spacing-md);
}

.card__body {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
}

.card__footer {
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--border-color-light);
}

/* ============================================
   分区段落
   ============================================ */
.section {
    padding: var(--spacing-3xl) 0;
    position: relative;
}

.scroll-reveal {
    opacity: 0;
    transform: translateY(48px);
    transition: opacity 0.9s cubic-bezier(0.22, 1, 0.36, 1), transform 0.9s cubic-bezier(0.22, 1, 0.36, 1);
}

.scroll-reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    .hero-glow__orb {
        animation: none;
        opacity: 0.3;
    }

    .page-home .hero-slim > *,
    .scroll-reveal {
        transition: none !important;
        opacity: 1 !important;
        transform: none !important;
    }
}


.section-light {
    background-color: var(--bg-light);
}

.section-dark {
    background-color: var(--bg-dark);
    color: var(--text-light);
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    max-width: var(--max-text-width);
    margin-left: auto;
    margin-right: auto;
}

.section-title h2 {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-md);
}

.section-title p {
    font-size: var(--font-size-lg);
    color: var(--text-gray);
}

.lead {
    font-size: var(--font-size-lg);
    color: var(--text-gray);
    line-height: var(--line-height-relaxed);
}

.text-muted {
    color: var(--text-gray-light);
}

.divider {
    width: 100%;
    height: 1px;
    background: var(--divider-color);
    margin: var(--spacing-2xl) 0;
}

.tag {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 6px 12px;
    border-radius: var(--radius-pill);
    font-size: var(--font-size-sm);
    background-color: rgba(0, 86, 179, 0.08);
    color: var(--primary-dark);
}

.tag--outline {
    background-color: transparent;
    border: 1px solid var(--border-color);
}

.link-arrow {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 600;
    color: var(--primary-color);
}

.link-arrow::after {
    content: '→';
    transition: transform var(--transition-base);
}

.link-arrow:hover::after {
    transform: translateX(4px);
}

/* ============================================
   内容模块
   ============================================ */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    background: #ffffff;
    border-radius: 20px;
    padding: var(--spacing-2xl);
    border: 1px solid rgba(0, 0, 0, 0.04);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-soft);
}

.feature-card__icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    background: rgba(0, 86, 179, 0.12);
    color: var(--primary-dark);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: var(--spacing-lg);
}

.feature-card__title {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-sm);
}

.feature-card__desc {
    color: var(--text-gray);
    margin-bottom: 0;
}

.feature-card--accent .feature-card__icon {
    background: rgba(247, 181, 0, 0.18);
    color: var(--accent-color);
}

.feature-card--success .feature-card__icon {
    background: rgba(40, 167, 69, 0.15);
    color: #17863c;
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--spacing-xl);
}

.stat-card {
    background: #ffffff;
    border-radius: 18px;
    padding: var(--spacing-2xl);
    border: 1px solid rgba(0, 0, 0, 0.04);
    box-shadow: var(--shadow-md);
}

.stat-card__value {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: var(--spacing-sm);
}

.stat-card__label {
    color: var(--text-gray);
    font-size: var(--font-size-sm);
    letter-spacing: 0.3px;
    text-transform: uppercase;
}

.stat-card__desc {
    color: var(--text-gray);
    margin-top: var(--spacing-md);
}

.content-layout {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
    gap: var(--spacing-2xl);
    align-items: start;
}

.content-layout--wide {
    grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
}

.content-layout__main,
.content-layout__aside {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.aside-card {
    background: #ffffff;
    border-radius: 18px;
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(0, 0, 0, 0.04);
}

.aside-card__title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--spacing-xl);
}

.info-card {
    background: #ffffff;
    border-radius: 16px;
    padding: var(--spacing-xl);
    border: 1px solid rgba(0, 0, 0, 0.04);
    box-shadow: var(--shadow-md);
}

.info-card__title {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--text-dark);
}

.info-card__description {
    color: var(--text-gray);
}

.info-card--accent {
    background: var(--gradient-surface);
}

.form-card {
    background: #ffffff;
    border-radius: 20px;
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(0, 0, 0, 0.04);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--spacing-lg);
}

.form-grid--single {
    grid-template-columns: 1fr;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.form-group label {
    font-weight: 600;
    color: var(--text-dark);
}

.form-control {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
    background-color: #ffffff;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 86, 179, 0.12);
}

.form-control--textarea {
    min-height: 160px;
    resize: vertical;
}

.contact-cards {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--spacing-lg);
}

.contact-card {
    background: #ffffff;
    border-radius: 20px;
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(0, 0, 0, 0.04);
    text-align: center;
}

.contact-card__icon {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-md);
}

.contact-card__title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
    color: var(--text-dark);
}

.contact-card__meta {
    color: var(--text-gray);
}

/* ============================================
   首页高级组件
   ============================================ */
.media-feature {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: var(--spacing-3xl);
    align-items: start;
}

.media-feature__content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.media-feature__title {
    margin: 0;
    font-size: var(--font-size-3xl);
    color: var(--text-dark);
}

.media-feature__description {
    margin: 0;
    color: var(--text-gray);
    line-height: var(--line-height-relaxed);
    max-width: var(--max-text-width);
}

.insight-list {
    display: grid;
    gap: var(--spacing-lg);
}

.insight-item {
    background: #ffffff;
    border-radius: 18px;
    padding: var(--spacing-lg);
    border: 1px solid rgba(15, 37, 70, 0.08);
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.insight-item__meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: var(--font-size-sm);
    color: var(--text-gray-light);
    text-transform: uppercase;
    letter-spacing: 0.4px;
}

.insight-item__title {
    margin: 0;
    font-size: var(--font-size-lg);
    color: var(--text-dark);
}

.insight-item p {
    margin: 0;
    color: var(--text-gray);
}

.cta--gradient {
    background: linear-gradient(135deg, #0f1d33 0%, #1f3048 45%, #0056b3 100%);
    color: #ffffff;
}

.cta--gradient .btn-soft {
    background-color: rgba(255, 255, 255, 0.18);
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.35);
}

.cta--gradient .btn-soft:hover {
    background-color: #ffffff;
    color: var(--primary-dark);
}

.list-check,
.list-numbered,
.list-dashed {
    list-style: none;
    padding-left: 0;
    margin: 0;
    display: grid;
    gap: var(--spacing-sm);
}

.list-check li {
    position: relative;
    padding-left: 28px;
    color: var(--text-gray);
}

.list-check li::before {
    content: "\2713";
    position: absolute;
    left: 0;
    top: 4px;
    font-size: 16px;
    color: var(--secondary-color);
}

.list-numbered {
    counter-reset: ordered;
}

.list-numbered li {
    counter-increment: ordered;
    position: relative;
    padding-left: 34px;
    color: var(--text-gray);
}

.list-numbered li::before {
    content: counter(ordered, decimal-leading-zero);
    position: absolute;
    left: 0;
    top: 0;
    background: rgba(0, 86, 179, 0.12);
    color: var(--primary-dark);
    font-weight: 600;
    padding: 2px 10px;
    border-radius: var(--radius-pill);
    font-size: var(--font-size-sm);
}

.list-dashed li {
    position: relative;
    padding-left: 20px;
    color: var(--text-gray);
}

.list-dashed li::before {
    content: '—';
    position: absolute;
    left: 0;
    top: 0;
    color: var(--primary-color);
}

.media-block {
    display: grid;
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: var(--spacing-2xl);
    align-items: center;
}

.media-block--reverse {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.5fr);
}

.media-block__image {
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow-soft);
}

.media-block__content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.logo-wall {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: var(--spacing-lg);
    align-items: center;
}

.logo-wall__item {
    background: #ffffff;
    border-radius: 14px;
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    border: 1px solid rgba(0, 0, 0, 0.04);
    min-height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-gray);
    font-weight: 600;
}

.cta {
    position: relative;
    border-radius: 28px;
    padding: var(--spacing-3xl);
    background: var(--gradient-primary);
    color: var(--text-light);
    overflow: hidden;
}

.cta--light {
    background: var(--gradient-surface);
    color: var(--text-dark);
}

.cta::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.25), transparent 50%);
    pointer-events: none;
}

.cta__title {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-md);
    color: inherit;
}

.cta__description {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xl);
    color: inherit;
    opacity: 0.92;
}

.cta__actions {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.breadcrumbs {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
    color: inherit;
    opacity: 0.8;
}

.breadcrumbs__item a {
    color: inherit;
}

.breadcrumbs__separator {
    opacity: 0.6;
}

.quote-card {
    background: #ffffff;
    border-radius: 20px;
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(0, 0, 0, 0.04);
}

.quote-card__content {
    font-size: var(--font-size-lg);
    color: var(--text-dark);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-lg);
}

.quote-card__author {
    display: flex;
    flex-direction: column;
    color: var(--text-gray);
}

.timeline {
    position: relative;
    padding-left: 24px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 10px;
    top: 4px;
    bottom: 4px;
    width: 2px;
    background: var(--divider-color);
}

.timeline__item {
    position: relative;
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.timeline__item:last-child {
    margin-bottom: 0;
}

.timeline__marker {
    position: absolute;
    left: -24px;
    top: 4px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--primary-color);
    border: 2px solid #ffffff;
    box-shadow: 0 0 0 3px rgba(0, 86, 179, 0.2);
}

.timeline__title {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xs);
}

.timeline__description {
    color: var(--text-gray);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    background: #ffffff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.data-table th,
.data-table td {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-color-light);
    text-align: left;
    color: var(--text-gray);
}

.data-table th {
    background: var(--neutral-100);
    font-weight: 600;
    color: var(--text-dark);
}

.data-table tr:last-child th,
.data-table tr:last-child td {
    border-bottom: none;
}
.section--surface {
    background: var(--gradient-surface);
}

.section--muted {
    background-color: var(--neutral-100);
}

.section--tight {
    padding: var(--spacing-2xl) 0;
}

.section--flush {
    padding: 0;
}

.section--narrow .container {
    max-width: var(--container-narrow);
}

.section--divider {
    border-top: 1px solid var(--divider-color);
}

.section-divider {
    width: 120px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: var(--radius-pill);
    margin: var(--spacing-lg) auto;
}

.section-heading {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    max-width: var(--max-text-width);
}

.section-heading--center {
    text-align: center;
    margin: 0 auto;
    align-items: center;
}

.section-heading__eyebrow {
    font-size: var(--font-size-sm);
    font-weight: 600;
    letter-spacing: 0.4px;
    color: var(--primary-color);
    text-transform: uppercase;
}

.section-heading__title {
    font-size: var(--font-size-4xl);
    line-height: 1.15;
    color: var(--text-dark);
}

.section-heading__description {
    font-size: var(--font-size-lg);
    color: var(--text-gray);
}

/* ============================================
   页脚
   ============================================ */
.footer {
    background-color: var(--bg-dark);
    color: var(--text-light);
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
    margin-top: auto;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-section h3 {
    color: var(--text-light);
    margin-bottom: var(--spacing-lg);
}

.footer-section p {
    color: #aaaaaa;
    margin-bottom: var(--spacing-sm);
}

.footer-section a {
    color: #aaaaaa;
    transition: color var(--transition-base);
}

.footer-section a:hover {
    color: var(--primary-light);
    text-decoration: none;
}

.footer-bottom {
    border-top: 1px solid #555555;
    padding-top: var(--spacing-lg);
    text-align: center;
    color: #aaaaaa;
}

/* ============================================
   响应式设计
   ============================================ */
@media (max-width: 1024px) {
    .container {
        max-width: 960px;
    }
    
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }

    .feature-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .stat-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .info-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .hero-slim {
        max-width: 100%;
    }

    .hero-shell {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }

    .hero-visual {
        justify-self: start;
        margin-top: var(--spacing-lg);
    }

    .hero-badge--north { top: -20px; left: 0; }
    .hero-badge--south { bottom: -24px; left: 48px; }
    .hero-badge--east { top: 110px; right: auto; left: 220px; }

    .visual-showcase {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .case-deck {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .agenda-track,
    .operating-system,
    .voice-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .knowledge-hub {
        grid-template-columns: 1fr;
    }

    .global-floating {
        display: none;
    }

    .logo-wall {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }

    .content-layout {
        grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    }

    .media-block,
    .media-block--reverse {
        grid-template-columns: 1fr;
    }

    .media-feature {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-base: 15px;
        --spacing-lg: 20px;
        --spacing-2xl: 40px;
        --spacing-3xl: 50px;
    }
    
    .container {
        max-width: 100%;
        padding: 0 var(--spacing-md);
    }
    
    .hero-slim {
        gap: var(--spacing-lg);
    }

    .hero-slim h1 {
        font-size: var(--font-size-4xl);
    }

    .hero-slim__actions {
        flex-direction: column;
        align-items: stretch;
    }

    .hero-visual__main {
        width: 280px;
        height: 280px;
    }

    .hero-badge {
        width: 200px;
    }

    .hero-badge--east {
        top: 120px;
        left: auto;
        right: -18px;
    }

    .visual-showcase {
        grid-template-columns: 1fr;
    }

    h1 {
        font-size: var(--font-size-3xl);
    }
    
    h2 {
        font-size: var(--font-size-2xl);
    }
    
    .navbar-content {
        height: 60px;
        padding: 0 var(--spacing-md);
    }
    
    .navbar-menu {
        display: none;
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
        flex-direction: column;
        background-color: var(--bg-white);
        gap: 0;
        box-shadow: var(--shadow-lg);
    }
    
    .navbar-menu.active {
        display: flex;
    }
    
    .navbar-item {
        width: 100%;
        border-bottom: 1px solid var(--border-color);
    }
    
    .navbar-link {
        padding: var(--spacing-md);
        display: block;
    }
    
    .navbar-link.active::after {
        display: none;
    }
    
    .navbar-item.navbar-cta {
        padding: var(--spacing-md);
    }
    
    .navbar-item.navbar-cta .btn {
        width: 100%;
    }
    
    .navbar-toggle {
        display: block;
    }
    
    .dropdown-menu {
        position: static;
        opacity: 0;
        visibility: hidden;
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-base), opacity var(--transition-base);
        transform: none;
        margin-top: 0;
        padding: 0;
        border: none;
        border-radius: 0;
        box-shadow: none;
        backdrop-filter: none;
    }

    .dropdown-menu::before {
        display: none;
    }

    .navbar-dropdown.active .dropdown-menu {
        opacity: 1;
        visibility: visible;
        max-height: 500px;
    }
    
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }
    
    .feature-grid,
    .stat-grid,
    .info-grid,
    .form-grid,
    .contact-cards,
    .case-deck,
    .agenda-track,
    .operating-system,
    .voice-grid,
    .knowledge-hub,
    .knowledge-hub__cards {
        grid-template-columns: 1fr;
    }

    .logo-wall {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .content-layout,
    .content-layout--wide {
        grid-template-columns: 1fr;
    }

    .cta {
        padding: var(--spacing-2xl);
        text-align: center;
    }

    .cta__actions {
        justify-content: center;
    }

    .media-block,
    .media-block--reverse {
        grid-template-columns: 1fr;
    }

    .media-feature {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }

    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }
    
    .section {
        padding: var(--spacing-2xl) 0;
    }
}

@media (max-width: 480px) {
    :root {
        --font-size-base: 14px;
        --spacing-lg: 16px;
        --spacing-2xl: 32px;
        --spacing-3xl: 40px;
    }
    
    h1 {
        font-size: var(--font-size-2xl);
    }
    
    h2 {
        font-size: var(--font-size-xl);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }

    .hero-slim__actions {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-md);
    }

    .hero-shell {
        grid-template-columns: 1fr;
    }

    .hero-visual {
        display: none;
    }

    .visual-showcase {
        gap: var(--spacing-lg);
    }

    .logo-wall {
        grid-template-columns: 1fr;
    }

    .breadcrumbs {
        flex-wrap: wrap;
    }

    .knowledge-hub__cta {
        flex-direction: column;
        align-items: stretch;
    }
}

/* ============================================
   工具类
   ============================================ */
.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.text-left {
    text-align: left;
}

.mt-0 { margin-top: 0; }
.mt-xs { margin-top: var(--spacing-xs); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-xs { margin-bottom: var(--spacing-xs); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.pt-0 { padding-top: 0; }
.pt-xs { padding-top: var(--spacing-xs); }
.pt-sm { padding-top: var(--spacing-sm); }
.pt-md { padding-top: var(--spacing-md); }
.pt-lg { padding-top: var(--spacing-lg); }
.pt-xl { padding-top: var(--spacing-xl); }

.pb-0 { padding-bottom: 0; }
.pb-xs { padding-bottom: var(--spacing-xs); }
.pb-sm { padding-bottom: var(--spacing-sm); }
.pb-md { padding-bottom: var(--spacing-md); }
.pb-lg { padding-bottom: var(--spacing-lg); }
.pb-xl { padding-bottom: var(--spacing-xl); }

.hidden {
    display: none !important;
}

.visible {
    display: block !important;
}

.opacity-50 {
    opacity: 0.5;
}

.opacity-75 {
    opacity: 0.75;
}