/* ===================================
   style.css - YiCore 主样式文件
   描述：YiCore 企业网站核心样式
   版本：v2.0 - 科技感、智能化、灵动感
   =================================== */

/* -----------------------------------
   1. CSS 变量定义
   ----------------------------------- */
:root {
    /* === 主色调 - 靛蓝紫渐变 === */
    --color-primary: #6366F1;
    --color-primary-dark: #4F46E5;
    --color-primary-light: #818CF8;
    --color-primary-10: rgba(99, 102, 241, 0.1);
    --color-primary-glow: rgba(99, 102, 241, 0.4);

    /* === AI 主题色 === */
    --color-ai-purple: #8B5CF6;
    --color-ai-purple-glow: rgba(139, 92, 246, 0.4);
    --color-ai-cyan: #06B6D4;
    --color-ai-pink: #EC4899;

    /* 辅助色 - 保持绿色作为辅助 */
    --color-secondary: #22C55E;
    --color-secondary-dark: #16A34A;
    --color-secondary-light: #4ADE80;
    --color-secondary-glow: rgba(34, 197, 94, 0.4);

    /* 点缀色 - 活力橙 */
    --color-accent: #FF6B35;
    --color-accent-dark: #E55A2B;
    --color-accent-glow: rgba(255, 107, 53, 0.4);

    /* 深色背景系 */
    --color-dark: #0A1628;
    --color-darker: #050D18;
    --color-darkest: #020810;
    --color-surface: #0F1A2E;
    --color-surface-light: #142238;

    /* 灰度色阶 */
    --color-gray-50: #F9FAFB;
    --color-gray-100: #F3F4F6;
    --color-gray-200: #E5E7EB;
    --color-gray-300: #D1D5DB;
    --color-gray-400: #9CA3AF;
    --color-gray-500: #6B7280;
    --color-gray-600: #4B5563;
    --color-gray-700: #374151;
    --color-gray-800: #1F2937;
    --color-gray-900: #111827;
    --color-white: #FFFFFF;

    /* === 渐变系统 === */
    --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-ai-purple) 100%);
    --gradient-hero: linear-gradient(135deg, #1E293B 0%, #0F172A 50%, #1E1B4B 100%);
    --gradient-bg: linear-gradient(135deg, #EEF2FF 0%, #F0F9FF 50%, #FDF4FF 100%);
    --gradient-dark: linear-gradient(180deg, var(--color-dark) 0%, var(--color-darker) 100%);
    --gradient-glow: linear-gradient(135deg, var(--color-primary-glow) 0%, var(--color-ai-purple-glow) 100%);
    --gradient-ai: linear-gradient(135deg, var(--color-ai-purple) 0%, var(--color-ai-cyan) 50%, var(--color-primary) 100%);
    --gradient-card: linear-gradient(145deg, rgba(255, 255, 255, 0.9) 0%, rgba(255, 255, 255, 0.7) 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
    --gradient-mesh: radial-gradient(at 40% 20%, hsla(239, 84%, 67%, 0.3) 0px, transparent 50%),
                     radial-gradient(at 80% 0%, hsla(263, 70%, 66%, 0.2) 0px, transparent 50%),
                     radial-gradient(at 0% 50%, hsla(280, 100%, 93%, 0.15) 0px, transparent 50%);

    /* === 字体系统 === */
    --font-family-base: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-family-display: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-family-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', Monaco, Consolas, monospace;

    /* 字号 */
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    --font-size-7xl: 4.5rem;

    /* 字重 */
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;

    /* 行高 */
    --line-height-tight: 1.1;
    --line-height-snug: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* 间距 */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    --spacing-5xl: 8rem;

    /* 圆角 */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    --radius-3xl: 3rem;
    --radius-full: 9999px;

    /* === 阴影系统 - 增强科技感 === */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-primary: 0 10px 40px rgba(99, 102, 241, 0.35);
    --shadow-secondary: 0 10px 40px rgba(34, 197, 94, 0.35);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.08);
    --shadow-card-hover: 0 24px 48px rgba(0, 0, 0, 0.15);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.2);
    --shadow-glow-lg: 0 0 80px rgba(99, 102, 241, 0.3);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);

    /* === 玻璃态样式系统 === */
    --glass-bg: rgba(255, 255, 255, 0.85);
    --glass-bg-dark: rgba(99, 102, 241, 0.15);
    --glass-bg-light: rgba(255, 255, 255, 0.15);
    --glass-blur: blur(12px);
    --glass-border: rgba(255, 255, 255, 0.3);
    --glass-border-dark: rgba(99, 102, 241, 0.2);
    --glass-shadow: 0 4px 24px rgba(0, 0, 0, 0.06), inset 0 1px 0 rgba(255, 255, 255, 0.5);
    --glass-shadow-hover: 0 12px 40px rgba(99, 102, 241, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.6);

    /* 动画过渡 */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slower: 700ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

    /* 层级 */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-tooltip: 600;
    --z-max: 9999;

    /* 导航高度 */
    --navbar-height: 80px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    font-size: 16px;
}

body {
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    color: var(--color-gray-700);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

body.menu-open {
    overflow: hidden;
}

/* 选中文本样式 */
::selection {
    background-color: var(--color-primary);
    color: var(--color-white);
}

/* 滚动条样式 - Indigo+Purple 主题 */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--color-surface);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-ai-purple) 100%);
    border-radius: var(--radius-full);
    border: 2px solid var(--color-surface);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--color-primary-light) 0%, #A78BFA 100%);
}

/* -----------------------------------
   3. 基础元素
   ----------------------------------- */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--color-dark);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

h1, .h1 { font-size: var(--font-size-5xl); }
h2, .h2 { font-size: var(--font-size-4xl); }
h3, .h3 { font-size: var(--font-size-3xl); }
h4, .h4 { font-size: var(--font-size-2xl); }
h5, .h5 { font-size: var(--font-size-xl); }
h6, .h6 { font-size: var(--font-size-lg); }

p {
    margin-bottom: var(--spacing-md);
}

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

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

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

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* -----------------------------------
   4. 工具类
   ----------------------------------- */

/* 文本对齐 */
.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }

/* 文本颜色 */
.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-secondary); }
.text-accent { color: var(--color-accent); }
.text-dark { color: var(--color-dark); }
.text-muted { color: var(--color-gray-500); }
.text-white { color: var(--color-white); }

/* 背景颜色 */
.bg-primary { background-color: var(--color-primary); }
.bg-secondary { background-color: var(--color-secondary); }
.bg-accent { background-color: var(--color-accent); }
.bg-dark { background-color: var(--color-dark); }
.bg-light { background-color: var(--color-gray-100); }
.bg-white { background-color: var(--color-white); }
.bg-gradient { background: var(--gradient-primary); }
.bg-gradient-dark { background: var(--gradient-dark); }
.bg-surface { background-color: var(--color-surface); }

/* 渐变文本 */
.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-gradient-ai {
    background: var(--gradient-ai);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 发光效果 */
.glow {
    box-shadow: var(--shadow-glow);
}

.glow-lg {
    box-shadow: var(--shadow-glow-lg);
}

.glow-text {
    text-shadow: 0 0 20px var(--color-primary-glow), 0 0 40px var(--color-primary-glow);
}

/* 间距工具 */
.section-padding {
    padding: var(--spacing-4xl) 0;
}

.section-margin {
    margin-bottom: var(--spacing-4xl);
}

/* -----------------------------------
   5. 组件样式
   ----------------------------------- */

/* === 按钮组件 === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    line-height: 1;
    text-align: center;
    white-space: nowrap;
    vertical-align: middle;
    cursor: pointer;
    user-select: none;
    border: 1px solid transparent;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25);
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--color-white);
    border: none;
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.35);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-ai-purple) 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.45);
    color: var(--color-white);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.35);
}

.btn-secondary {
    background: rgba(139, 92, 246, 0.15);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    color: var(--color-white);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 24px rgba(139, 92, 246, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
    background: rgba(139, 92, 246, 0.25);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(139, 92, 246, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.15);
    color: var(--color-white);
}

.btn-secondary:active {
    transform: translateY(0);
    background: rgba(139, 92, 246, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border-color: rgba(99, 102, 241, 0.4);
    box-shadow: none;
}

.btn-outline:hover {
    background: rgba(99, 102, 241, 0.1);
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.2);
}

.btn-outline-light {
    background-color: transparent;
    color: var(--color-white);
    border-color: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(4px);
}

.btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--color-white);
    color: var(--color-white);
    transform: translateY(-2px);
}

.btn-white {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    color: var(--color-white);
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 4px 24px rgba(255, 255, 255, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn-white:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.4);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(255, 255, 255, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.btn-white:active {
    transform: translateY(0);
    background: rgba(255, 255, 255, 0.3);
}

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

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

.btn-icon {
    width: 48px;
    height: 48px;
    padding: 0;
    border-radius: var(--radius-full);
}

/* 按钮波纹效果 */
.btn-ripple {
    position: relative;
    overflow: hidden;
}

.btn-ripple::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.4) 0%, transparent 70%);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.btn-ripple:active::before {
    width: 400px;
    height: 400px;
}

/* 按钮光效 */
.btn-glow {
    position: relative;
}

.btn-glow::after {
    content: '';
    position: absolute;
    inset: -2px;
    background: var(--gradient-primary);
    border-radius: inherit;
    z-index: -1;
    opacity: 0;
    filter: blur(12px);
    transition: opacity var(--transition-base);
}

.btn-glow:hover::after {
    opacity: 0.6;
}

/* === 导航栏组件 === */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--navbar-height);
    background-color: transparent;
    z-index: var(--z-fixed);
    transition: all var(--transition-base);
}

.main-header--scrolled {
    background-color: rgba(10, 22, 40, 0.85);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.main-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

.main-header__brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
    text-decoration: none;
    transition: all var(--transition-base);
}

.main-header__brand:hover {
    color: var(--color-white);
    transform: scale(1.02);
}

.main-header__brand svg {
    flex-shrink: 0;
    filter: drop-shadow(0 0 8px var(--color-primary-glow));
    transition: filter var(--transition-base);
}

.main-header__brand:hover svg {
    filter: drop-shadow(0 0 16px var(--color-primary-glow));
}

.main-header__brand img {
    height: 40px;
    width: auto;
}

.main-header__nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.main-header__link {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: rgba(255, 255, 255, 0.8);
    padding: var(--spacing-sm) 0;
    position: relative;
    transition: color var(--transition-fast);
    text-decoration: none;
}

.main-header__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-base);
    border-radius: var(--radius-full);
}

.main-header__link::before {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    width: 4px;
    height: 4px;
    background: var(--color-ai-purple);
    border-radius: 50%;
    transform: translateX(-50%) scale(0);
    transition: transform var(--transition-base);
    box-shadow: 0 0 8px var(--color-ai-purple-glow);
}

.main-header__link:hover,
.main-header__link.active {
    color: var(--color-white);
}

.main-header__link:hover::after,
.main-header__link.active::after {
    width: 100%;
}

.main-header__link.active::before {
    transform: translateX(-50%) scale(1);
}

.main-header__brand .logo {
    border-radius: var(--bs-border-radius);
}

/* 语言切换 */
.lang-switch {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs);
    background: rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(8px);
}

.lang-switch__btn {
    padding: var(--spacing-xs) var(--spacing-md);
    color: rgba(255, 255, 255, 0.6);
    border-radius: var(--radius-full);
    border: none;
    background: transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-weight: var(--font-weight-medium);
}

.lang-switch__btn.active {
    background: rgba(99, 102, 241, 0.25);
    color: var(--color-white);
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.2);
}

.lang-switch__btn:hover:not(.active) {
    color: var(--color-white);
    background: rgba(255, 255, 255, 0.1);
}

/* 移动端菜单按钮 */
.main-header__toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 36px;
    height: 36px;
    padding: 0;
    background: none;
    border: none;
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.main-header__toggle:hover {
    background: rgba(255, 255, 255, 0.1);
}

.main-header__toggle-bar {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-white);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    margin: 0 auto;
}

.main-header__toggle.active .main-header__toggle-bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.main-header__toggle.active .main-header__toggle-bar:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.main-header__toggle.active .main-header__toggle-bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* === 玻璃卡片组件 === */
.card {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: var(--radius-xl);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06), inset 0 1px 0 rgba(255, 255, 255, 0.5);
    overflow: hidden;
    transition: all var(--transition-base);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(99, 102, 241, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.6);
    border-color: rgba(99, 102, 241, 0.15);
}

.card-img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
}

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

.card-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
}

.card-text {
    color: var(--color-gray-500);
    font-size: var(--font-size-sm);
}

/* === 服务卡片 - 科技感增强 === */
.service-card {
    position: relative;
    padding: var(--spacing-xl);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: var(--radius-2xl);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06), inset 0 1px 0 rgba(255, 255, 255, 0.5);
    text-align: center;
    transition: all var(--transition-base);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform var(--transition-base);
    border-radius: var(--radius-full);
}

.service-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: -1;
}

.service-card:hover {
    transform: translateY(-12px);
    box-shadow: 0 16px 48px rgba(99, 102, 241, 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.6);
    border-color: rgba(99, 102, 241, 0.15);
}

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

.service-card:hover::after {
    opacity: 0.03;
}

.service-card__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    border-radius: var(--radius-xl);
    font-size: 36px;
    transition: all var(--transition-spring);
    position: relative;
}

.service-card__icon::before {
    content: '';
    position: absolute;
    inset: -4px;
    background: var(--gradient-primary);
    border-radius: inherit;
    opacity: 0;
    z-index: -1;
    transition: opacity var(--transition-base);
}

.service-card:hover .service-card__icon {
    background: var(--gradient-primary);
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 8px 32px var(--color-primary-glow);
}

.service-card:hover .service-card__icon::before {
    opacity: 0.3;
    filter: blur(12px);
}

.service-card__icon svg,
.service-card__icon i {
    color: var(--color-primary);
    transition: all var(--transition-base);
}

.service-card:hover .service-card__icon svg,
.service-card:hover .service-card__icon i {
    color: var(--color-white);
    transform: scale(1.1);
}

.service-card__title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
    color: var(--color-dark);
    transition: color var(--transition-base);
}

.service-card:hover .service-card__title {
    color: var(--color-primary);
}

.service-card__description {
    color: var(--color-gray-500);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
}

.service-card__link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-md);
    color: var(--color-primary);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
}

.service-card__link:hover {
    gap: var(--spacing-md);
    color: var(--color-primary-dark);
}

.service-card__link i {
    transition: transform var(--transition-fast);
}

.service-card__link:hover i {
    transform: translateX(4px);
}

/* === 案例卡片 - 科技感 === */
.portfolio-card {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    cursor: pointer;
    background: var(--color-dark);
}

.portfolio-card__image {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.portfolio-card:hover .portfolio-card__image {
    transform: scale(1.08);
}

.portfolio-card__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to top,
        rgba(10, 22, 40, 0.98) 0%,
        rgba(10, 22, 40, 0.6) 40%,
        rgba(10, 22, 40, 0.2) 60%,
        transparent 100%
    );
    opacity: 0;
    transition: opacity var(--transition-base);
}

.portfolio-card:hover .portfolio-card__overlay {
    opacity: 1;
}

.portfolio-card__content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-xl);
    transform: translateY(30px);
    opacity: 0;
    transition: all var(--transition-base);
}

.portfolio-card:hover .portfolio-card__content {
    transform: translateY(0);
    opacity: 1;
}

.portfolio-card__category {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(99, 102, 241, 0.2);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: var(--color-white);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.2);
}

.portfolio-card__title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

.portfolio-card__description {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.7);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.portfolio-card__description::before {
    content: '';
    width: 20px;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
}

/* === 团队卡片 === */
.team-card {
    text-align: center;
}

.team-card__avatar {
    width: 160px;
    height: 160px;
    margin: 0 auto var(--spacing-lg);
    border-radius: var(--radius-full);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    transition: all var(--transition-base);
    position: relative;
}

.team-card__avatar::before {
    content: '';
    position: absolute;
    inset: -4px;
    background: var(--gradient-primary);
    border-radius: inherit;
    z-index: -1;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.team-card:hover .team-card__avatar {
    transform: scale(1.05);
    box-shadow: 0 16px 40px rgba(99, 102, 241, 0.2);
}

.team-card:hover .team-card__avatar::before {
    opacity: 1;
}

.team-card__avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.team-card__name {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-dark);
    margin-bottom: var(--spacing-xs);
}

.team-card__position {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-md);
}

.team-card__social {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
}

.team-card__social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(99, 102, 241, 0.08);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: var(--radius-full);
    color: var(--color-primary);
    transition: all var(--transition-fast);
    border: 1px solid rgba(99, 102, 241, 0.1);
}

.team-card__social a:hover {
    background: rgba(99, 102, 241, 0.15);
    color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.15);
    border-color: rgba(99, 102, 241, 0.2);
}

/* === 表单组件 === */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-700);
}

.form-control {
    display: block;
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-base);
    color: var(--color-gray-700);
    background-color: var(--color-white);
    background-clip: padding-box;
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.form-control:focus {
    color: var(--color-gray-700);
    background-color: var(--color-white);
    border-color: var(--color-primary);
    outline: 0;
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1), var(--shadow-md);
}

.form-control::placeholder {
    color: var(--color-gray-400);
}

.form-control.is-invalid {
    border-color: #EF4444;
}

textarea.form-control {
    min-height: 150px;
    resize: vertical;
}

.field-error {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: #EF4444;
}

.form-message {
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
}

.form-message--success {
    background-color: rgba(139, 92, 246, 0.1);
    color: var(--color-secondary);
    border: 1px solid var(--color-secondary);
}

.form-message--error {
    background-color: rgba(239, 68, 68, 0.1);
    color: #EF4444;
    border: 1px solid #EF4444;
}

/* -----------------------------------
   6. 页面区块样式
   ----------------------------------- */

/* === Hero 区域 - 增强科技感 === */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-hero);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-mesh);
    opacity: 0.5;
}

.hero__background {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero__particles {
    position: absolute;
    inset: 0;
}

.hero__gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.4;
    animation: float 20s infinite ease-in-out;
}

.hero__gradient-orb--1 {
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, var(--color-primary) 0%, transparent 70%);
    top: -250px;
    right: -150px;
}

.hero__gradient-orb--2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--color-secondary) 0%, transparent 70%);
    bottom: -150px;
    left: -150px;
    animation-delay: -10s;
}

.hero__gradient-orb--3 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, var(--color-ai-purple) 0%, transparent 70%);
    top: 40%;
    left: 10%;
    animation-delay: -5s;
    opacity: 0.25;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(60px, -60px) scale(1.05); }
    50% { transform: translate(0, -120px) scale(0.95); }
    75% { transform: translate(-60px, -60px) scale(1.05); }
}

.hero__content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: var(--spacing-3xl) var(--spacing-md);
    max-width: 1000px;
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    color: var(--color-white);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-xl);
    backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

.hero__badge-dot {
    width: 8px;
    height: 8px;
    background: var(--color-secondary);
    border-radius: 50%;
    animation: pulse-dot 2s infinite;
    box-shadow: 0 0 12px var(--color-secondary-glow);
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.3); }
}

.hero__title {
    font-size: var(--font-size-6xl);
    font-weight: var(--font-weight-extrabold);
    color: var(--color-white);
    margin-bottom: var(--spacing-xl);
    line-height: 1.05;
    letter-spacing: -0.03em;
    text-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.hero__title-highlight {
    display: block;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient-shift 8s ease infinite;
    background-size: 200% auto;
}

@keyframes gradient-shift {
    0%, 100% { background-position: 0% center; }
    50% { background-position: 100% center; }
}

.hero__description {
    font-size: var(--font-size-xl);
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--spacing-2xl);
    line-height: var(--line-height-relaxed);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero__buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-lg);
}

.hero__scroll {
    position: absolute;
    bottom: var(--spacing-3xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    color: rgba(255, 255, 255, 0.5);
    font-size: var(--font-size-sm);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(12px); }
}

.hero__scroll-icon {
    width: 28px;
    height: 44px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 14px;
    position: relative;
    margin-top: var(--spacing-sm);
    backdrop-filter: blur(4px);
}

.hero__scroll-icon::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 50%;
    width: 4px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 2px;
    transform: translateX(-50%);
    animation: scroll-indicator 2s infinite;
    box-shadow: 0 0 8px var(--color-primary-glow);
}

@keyframes scroll-indicator {
    0% { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(16px); }
}

/* === 区块标题 === */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-header__badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    color: var(--color-primary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-lg);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    border: 1px solid rgba(99, 102, 241, 0.1);
}

.section-header__badge::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--gradient-primary);
    border-radius: 50%;
}

.section-header__title {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-dark);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

.section-header__description {
    font-size: var(--font-size-lg);
    color: var(--color-gray-500);
    max-width: 650px;
    margin: 0 auto;
    line-height: var(--line-height-relaxed);
}

/* 深色背景下的标题样式 */
.bg-dark .section-header__badge {
    background: rgba(255, 255, 255, 0.08);
    color: var(--color-secondary);
    border-color: rgba(139, 92, 246, 0.2);
}

.bg-dark .section-header__title {
    color: var(--color-white);
}

.bg-dark .section-header__description {
    color: rgba(255, 255, 255, 0.7);
}

/* === 服务区块 === */
.services-section {
    padding: var(--spacing-5xl) 0;
    background: linear-gradient(180deg, var(--color-gray-50) 0%, var(--color-white) 100%);
    position: relative;
}

.services-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-gray-200), transparent);
}

/* === 关于区块 === */
.about-section {
    padding: var(--spacing-5xl) 0;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: center;
}

.about-image {
    position: relative;
}

.about-image__main {
    border-radius: var(--radius-2xl);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.12);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.about-image__float {
    position: absolute;
    bottom: -30px;
    right: -30px;
    padding: var(--spacing-lg) var(--spacing-xl);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: var(--radius-xl);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.about-image__stats {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-image__label {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.about-text__subtitle {
    color: var(--color-primary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: var(--spacing-md);
}

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

.about-text__description {
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-xl);
    line-height: var(--line-height-relaxed);
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

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

.about-feature__icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    color: var(--color-white);
    font-size: 12px;
}

.about-feature__text {
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-700);
}

/* === 统计区块 - 科技感 === */
.stats-section {
    padding: var(--spacing-5xl) 0;
    background: var(--gradient-dark);
    position: relative;
    overflow: hidden;
}

.stats-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-mesh);
    opacity: 0.3;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
    position: relative;
    z-index: 1;
}

.stat-item {
    text-align: center;
    padding: var(--spacing-xl);
    position: relative;
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.stat-item::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.stat-item__number {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
    position: relative;
}

.stat-item__number span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-item__label {
    font-size: var(--font-size-base);
    color: rgba(255, 255, 255, 0.6);
    position: relative;
}

/* === 案例区块 === */
.portfolio-section {
    padding: var(--spacing-5xl) 0;
}

/* === 博客区块 === */
.blog-section {
    padding: var(--spacing-5xl) 0;
}

.blog-card {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06), inset 0 1px 0 rgba(255, 255, 255, 0.5);
    transition: all var(--transition-base);
    height: 100%;
    display: flex;
    flex-direction: column;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.blog-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 48px rgba(99, 102, 241, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.6);
    border-color: rgba(99, 102, 241, 0.15);
}

.blog-card__image {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.blog-card:hover .blog-card__image {
    transform: scale(1.05);
}

.blog-card__image-wrapper {
    overflow: hidden;
}

.blog-card__content {
    padding: var(--spacing-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.blog-card__meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.blog-card__category {
    display: inline-flex;
    padding: var(--spacing-xs) var(--spacing-md);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    color: var(--color-primary);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-full);
}

.blog-card__date {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.blog-card__title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
    line-height: var(--line-height-snug);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-card__title a {
    color: inherit;
    transition: color var(--transition-fast);
}

.blog-card__title a:hover {
    color: var(--color-primary);
}

.blog-card__excerpt {
    color: var(--color-gray-500);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-md);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

.blog-card__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-gray-100);
}

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

.blog-card__author-avatar {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    object-fit: cover;
}

.blog-card__author-name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-700);
}

.blog-card__read-time {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

/* 博客筛选标签 */
.blog-filter {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-3xl);
}

.portfolio-filter {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-2xl);
}

.filter-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: transparent;
    color: var(--color-gray-600);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    border: 1px solid transparent;
}

.filter-btn:hover {
    background: rgba(99, 102, 241, 0.08);
    color: var(--color-primary);
}

.filter-btn.active {
    background: rgba(99, 102, 241, 0.15);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: var(--color-primary);
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.15);
}

/* === 合作伙伴区块 === */
.partners-section {
    padding: var(--spacing-5xl) 0;
    background: linear-gradient(180deg, var(--color-gray-50) 0%, var(--color-white) 100%);
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--spacing-xl);
    align-items: center;
}

.partner-item {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    filter: grayscale(100%);
    opacity: 0.5;
    transition: all var(--transition-base);
}

.partner-item:hover {
    filter: grayscale(0);
    opacity: 1;
    transform: scale(1.05);
}

.partner-item img {
    max-width: 120px;
    height: auto;
}

/* === CTA区块 - 科技感 === */
.cta-section {
    padding: var(--spacing-5xl) 0;
    background: var(--gradient-dark);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--color-primary) 0%, transparent 70%);
    border-radius: 50%;
    opacity: 0.15;
    animation: pulse-glow 8s infinite ease-in-out;
}

.cta-section::after {
    content: '';
    position: absolute;
    bottom: -50%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--color-secondary) 0%, transparent 70%);
    border-radius: 50%;
    opacity: 0.1;
    animation: pulse-glow 8s infinite ease-in-out reverse;
}

@keyframes pulse-glow {
    0%, 100% { transform: scale(1); opacity: 0.1; }
    50% { transform: scale(1.1); opacity: 0.2; }
}

.cta-content {
    position: relative;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
    z-index: 1;
}

.cta__title {
    font-size: var(--font-size-4xl);
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.02em;
}

.cta__description {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--spacing-2xl);
}

/* === 页脚 === */
.footer {
    background: var(--color-darker);
    padding-top: var(--spacing-5xl);
}

.footer-main {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-2xl);
    padding-bottom: var(--spacing-3xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand {
    max-width: 300px;
}

.footer-brand__logo {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.footer-brand__logo .logo {
    height: 40px;
    border-radius: var(--bs-border-radius);
}

.footer-brand__name {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
    margin-left: var(--spacing-sm);
}

.footer-brand__description {
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-lg);
}

.footer-social {
    display: flex;
    gap: var(--spacing-sm);
}

.footer-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: var(--radius-lg);
    color: var(--color-white);
    transition: all var(--transition-fast);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-social a:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
}

.footer-nav__title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
}

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

.footer-nav__list a {
    color: rgba(255, 255, 255, 0.5);
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.footer-nav__list a:hover {
    color: var(--color-white);
    transform: translateX(4px);
}

.footer-contact__item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    color: rgba(255, 255, 255, 0.5);
    font-size: var(--font-size-sm);
}

.footer-contact__item i {
    color: var(--color-primary);
    margin-top: 2px;
}

.footer-bottom {
    padding: var(--spacing-lg) 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-copyright {
    color: rgba(255, 255, 255, 0.4);
    font-size: var(--font-size-sm);
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.4);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-white);
}

/* -----------------------------------
   7. 页面特定样式
   ----------------------------------- */

/* === 服务页面 === */
.service-detail {
    padding: var(--spacing-5xl) 0;
}

.service-detail__header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.service-detail__icon {
    width: 100px;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    background: rgba(99, 102, 241, 0.15);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: var(--radius-2xl);
    font-size: 48px;
    color: var(--color-primary);
    border: 1px solid rgba(99, 102, 241, 0.2);
    box-shadow: 0 8px 32px rgba(99, 102, 241, 0.15);
}

.service-process {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
    margin-top: var(--spacing-3xl);
}

.process-step {
    text-align: center;
    position: relative;
}

.process-step::after {
    content: '';
    position: absolute;
    top: 40px;
    right: -50%;
    width: 100%;
    height: 2px;
    background: linear-gradient(to right, var(--color-primary), transparent);
}

.process-step:last-child::after {
    display: none;
}

.process-step__number {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    background: rgba(99, 102, 241, 0.08);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 2px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-full);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    position: relative;
    z-index: 1;
    transition: all var(--transition-base);
}

.process-step:hover .process-step__number {
    background: rgba(99, 102, 241, 0.15);
    border-color: rgba(99, 102, 241, 0.3);
    transform: scale(1.1);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.15);
}

.process-step__title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
}

.process-step__description {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

/* === 联系页面 === */
.contact-section {
    padding: var(--spacing-5xl) 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-3xl);
}

.contact-info {
    padding: var(--spacing-2xl);
    background: var(--gradient-dark);
    border-radius: var(--radius-2xl);
    position: relative;
    overflow: hidden;
}

.contact-info::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at center, rgba(99, 102, 241, 0.1) 0%, transparent 50%);
}

.contact-info__item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.contact-info__icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(99, 102, 241, 0.15);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: var(--radius-lg);
    color: var(--color-white);
    font-size: 20px;
    flex-shrink: 0;
    border: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.1);
}

.contact-info__content h4 {
    color: var(--color-white);
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-xs);
}

.contact-info__content p {
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-sm);
    margin: 0;
}

.contact-form {
    padding: var(--spacing-2xl);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: var(--radius-2xl);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

/* === 关于页面 === */
.timeline {
    position: relative;
    padding: var(--spacing-2xl) 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--color-primary), var(--color-secondary));
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    width: 50%;
    padding: var(--spacing-xl);
}

.timeline-item:nth-child(odd) {
    left: 0;
    text-align: right;
    padding-right: var(--spacing-3xl);
}

.timeline-item:nth-child(even) {
    left: 50%;
    text-align: left;
    padding-left: var(--spacing-3xl);
}

.timeline-item__dot {
    position: absolute;
    top: var(--spacing-xl);
    width: 20px;
    height: 20px;
    background: rgba(99, 102, 241, 0.2);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: var(--radius-full);
    border: 3px solid var(--color-primary);
    box-shadow: 0 0 16px rgba(99, 102, 241, 0.2);
}

.timeline-item:nth-child(odd) .timeline-item__dot {
    right: -10px;
}

.timeline-item:nth-child(even) .timeline-item__dot {
    left: -10px;
}

.timeline-item__year {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.timeline-item__content {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06), inset 0 1px 0 rgba(255, 255, 255, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: all var(--transition-base);
}

.timeline-item__content:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(99, 102, 241, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.6);
    border-color: rgba(99, 102, 241, 0.15);
}

.timeline-item__title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
}

.timeline-item__description {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    margin: 0;
}

/* -----------------------------------
   8. 动画类（配合 JS 使用）
   ----------------------------------- */
[data-aos] {
    opacity: 0;
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

[data-aos="fade-up"] {
    transform: translateY(40px);
}

[data-aos="fade-down"] {
    transform: translateY(-40px);
}

[data-aos="fade-left"] {
    transform: translateX(40px);
}

[data-aos="fade-right"] {
    transform: translateX(-40px);
}

[data-aos="zoom-in"] {
    transform: scale(0.9);
}

[data-aos].aos-animate {
    opacity: 1;
    transform: translateY(0) translateX(0) scale(1);
}

/* 动画延迟 */
[data-aos-delay="100"] { transition-delay: 100ms; }
[data-aos-delay="200"] { transition-delay: 200ms; }
[data-aos-delay="300"] { transition-delay: 300ms; }
[data-aos-delay="400"] { transition-delay: 400ms; }
[data-aos-delay="500"] { transition-delay: 500ms; }
[data-aos-delay="600"] { transition-delay: 600ms; }

/* 跳过链接 */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-sm) var(--spacing-md);
    z-index: var(--z-max);
    transition: top var(--transition-fast);
    border-radius: var(--radius-md);
}

.skip-link:focus {
    top: var(--spacing-md);
}

/* 加载动画 */
.loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--color-gray-200);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 页面加载状态 */
.page-loading {
    position: fixed;
    inset: 0;
    background: var(--color-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-max);
    transition: opacity var(--transition-slow);
}

.page-loading.hidden {
    opacity: 0;
    pointer-events: none;
}

/* -----------------------------------
   9. 返回顶部按钮
   ----------------------------------- */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 56px;
    height: 56px;
    background: var(--gradient-primary);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-xl);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.35);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-ai-purple) 100%);
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.45);
}

.back-to-top:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25), 0 8px 24px rgba(99, 102, 241, 0.35);
}

/* -----------------------------------
   10. 科技感装饰效果
   ----------------------------------- */

/* 网格背景 */
.grid-bg {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(99, 102, 241, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99, 102, 241, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
}

/* 发光边框 */
.glow-border {
    position: relative;
}

.glow-border::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: var(--gradient-primary);
    border-radius: inherit;
    z-index: -1;
    opacity: 0;
    filter: blur(8px);
    transition: opacity var(--transition-base);
}

.glow-border:hover::before {
    opacity: 0.5;
}

/* 数据流动画 */
@keyframes data-flow {
    0% { transform: translateX(-100%); opacity: 0; }
    50% { opacity: 1; }
    100% { transform: translateX(100%); opacity: 0; }
}

.data-flow {
    position: relative;
    overflow: hidden;
}

.data-flow::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
    animation: data-flow 3s infinite;
}

/* 脉冲动画 */
@keyframes pulse-ring {
    0% { transform: scale(0.8); opacity: 1; }
    100% { transform: scale(1.5); opacity: 0; }
}

.pulse-ring {
    position: relative;
}

.pulse-ring::before,
.pulse-ring::after {
    content: '';
    position: absolute;
    inset: -8px;
    border: 2px solid var(--color-primary);
    border-radius: inherit;
    animation: pulse-ring 2s infinite;
}

.pulse-ring::after {
    animation-delay: 1s;
}

/* 打字机效果 */
@keyframes typing {
    from { width: 0; }
    to { width: 100%; }
}

@keyframes blink-caret {
    from, to { border-color: transparent; }
    50% { border-color: var(--color-primary); }
}

.typing-effect {
    overflow: hidden;
    white-space: nowrap;
    border-right: 3px solid var(--color-primary);
    animation: typing 3.5s steps(40, end), blink-caret 0.75s step-end infinite;
}

/* 霓虹光效 */
.neon-text {
    text-shadow:
        0 0 10px var(--color-primary),
        0 0 20px var(--color-primary),
        0 0 40px var(--color-primary),
        0 0 80px var(--color-primary);
}

.neon-box {
    box-shadow:
        0 0 5px var(--color-primary),
        0 0 10px var(--color-primary),
        0 0 20px var(--color-primary),
        inset 0 0 5px var(--color-primary);
}

/* 磁力吸附效果 */
.magnetic {
    transition: transform var(--transition-spring);
}

/* 悬浮卡片效果 */
.floating {
    animation: floating 6s ease-in-out infinite;
}

@keyframes floating {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

/* 光标追踪效果容器 */
.cursor-glow {
    position: relative;
    overflow: hidden;
}

.cursor-glow::before {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--color-primary-glow) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.cursor-glow:hover::before {
    opacity: 1;
}

/* 科技感分割线 */
.tech-divider {
    width: 100%;
    height: 1px;
    background: linear-gradient(
        90deg,
        transparent 0%,
        var(--color-primary) 20%,
        var(--color-secondary) 50%,
        var(--color-primary) 80%,
        transparent 100%
    );
    position: relative;
}

.tech-divider::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 8px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 50%;
    box-shadow: 0 0 12px var(--color-primary-glow);
}

/* -----------------------------------
   11. 玻璃态工具类
   ----------------------------------- */

/* 基础玻璃效果 */
.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);
}

.glass:hover {
    box-shadow: var(--glass-shadow-hover);
    border-color: var(--glass-border-dark);
}

/* 深色玻璃效果 */
.glass-dark {
    background: var(--glass-bg-dark);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 4px 24px rgba(99, 102, 241, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.glass-dark:hover {
    background: rgba(99, 102, 241, 0.2);
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 32px rgba(99, 102, 241, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

/* 轻量玻璃效果 */
.glass-light {
    background: var(--glass-bg-light);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 24px rgba(255, 255, 255, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.glass-light:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.3);
    box-shadow: 0 8px 32px rgba(255, 255, 255, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

/* 响应式调整 */
@media (max-width: 1199.98px) {
    .footer-main {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-xl);
    }

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

@media (max-width: 991.98px) {
    .main-header__nav {
        display: none;
    }

    .main-header__toggle {
        display: flex;
    }

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

    .about-image__float {
        position: relative;
        bottom: auto;
        right: auto;
        margin-top: var(--spacing-lg);
    }

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

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

@media (max-width: 767.98px) {
    :root {
        --font-size-6xl: 2.5rem;
        --font-size-5xl: 2rem;
        --font-size-4xl: 1.75rem;
        --font-size-3xl: 1.5rem;
    }

    .hero__title {
        font-size: var(--font-size-4xl);
    }

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

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

    .footer-main {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-brand {
        max-width: 100%;
    }

    .footer-social {
        justify-content: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
    }

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

    .timeline-item {
        width: 100%;
        left: 0 !important;
        text-align: left;
        padding-left: var(--spacing-3xl);
        padding-right: 0;
    }

    .timeline::before {
        left: 0;
    }

    .timeline-item__dot {
        left: -10px !important;
        right: auto !important;
    }

    .service-process {
        grid-template-columns: 1fr;
    }

    .process-step::after {
        display: none;
    }
}

@media (max-width: 575.98px) {
    .hero__buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero__buttons .btn {
        width: 100%;
        max-width: 280px;
    }

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