:root {
    /* === 科技蓝主色系 === */
    --color-primary-50: #E8F4FD;
    --color-primary-100: #B8DDF9;
    --color-primary-200: #89C6F5;
    --color-primary-300: #5AAFF1;
    --color-primary-400: #2B98ED;
    --color-primary-500: #0078E8;
    --color-primary-600: #0060BA;
    --color-primary-700: #00488C;
    --color-primary-800: #00305E;
    --color-primary-900: #001830;

    /* === 霓虹强调色 === */
    --color-accent-cyan: #00E5FF;
    --color-accent-cyan-light: #80F2FF;
    --color-accent-cyan-dark: #00B8CC;
    --color-accent-electric: #6C5CE7;
    --color-accent-electric-light: #A29BFE;
    --color-accent-teal: #00D9C0;
    --color-accent-orange: #FF6B35;
    --color-accent-pink: #FF2E63;
    --color-accent-green: #00E676;

    /* === 中性灰色系 === */
    --color-gray-50: #F8FAFC;
    --color-gray-100: #F1F5F9;
    --color-gray-200: #E2E8F0;
    --color-gray-300: #CBD5E1;
    --color-gray-400: #94A3B8;
    --color-gray-500: #64748B;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1E293B;
    --color-gray-900: #0F172A;

    /* === 语义色 === */
    --color-success: #00E676;
    --color-warning: #FFB300;
    --color-error: #FF5252;
    --color-info: #00E5FF;

    /* === 背景色 === */
    --bg-primary: #0A0E1A;
    --bg-secondary: #0F172A;
    --bg-tertiary: #1E293B;
    --bg-card: rgba(15, 23, 42, 0.8);
    --bg-glass: rgba(15, 23, 42, 0.6);

    /* === 文字色 === */
    --text-primary: #F1F5F9;
    --text-secondary: #94A3B8;
    --text-tertiary: #64748B;
    --text-inverse: #0A0E1A;
    --text-glow: #00E5FF;

    /* === 字体 === */
    --font-display: 'Inter', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
    --font-body: 'Inter', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', monospace;

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

    /* === 圆角 === */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* === 阴影与光晕 === */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 20px rgba(0, 229, 255, 0.3);
    --shadow-glow-strong: 0 0 40px rgba(0, 229, 255, 0.4);
    --shadow-cyan: 0 0 20px rgba(0, 229, 255, 0.2);
    --shadow-electric: 0 0 20px rgba(108, 92, 231, 0.2);

    /* === 过渡动画 === */
    --transition-fast: 150ms ease;
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

    /* === Z-index === */
    --z-navbar: 1000;
    --z-dropdown: 1001;
    --z-modal: 1100;
    --z-tooltip: 1200;

    /* === 布局 === */
    --navbar-height: 76px;
    --container-max: 1280px;
}

/* === 字体导入 === */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;600&family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    background: var(--bg-primary);
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* === 科技风滚动条 === */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--color-accent-cyan), var(--color-accent-electric));
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--color-accent-cyan-light), var(--color-accent-electric-light));
}

body.menu-open {
    overflow: hidden;
}

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

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

ul, ol {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--space-lg);
}

@media (min-width: 768px) {
    .container {
        padding-inline: var(--space-xl);
    }
}

@media (min-width: 1024px) {
    .container {
        padding-inline: var(--space-2xl);
    }
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}

/* === 导航栏 - 纯白背景 === */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-navbar);
    background: #FFFFFF;
    border-bottom: 1px solid #E2E8F0;
    transition: all var(--transition-base);
}

.site-header.scrolled {
    background: #FFFFFF;
    border-bottom-color: #CBD5E1;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}















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

.navbar-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--space-lg);
}



.navbar-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-left: var(--space-xl);
    flex-shrink: 0;
}

@media (max-width: 1023px) {
    .navbar-actions {
        display: none;
    }
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-accent-cyan);
    letter-spacing: -0.02em;
    z-index: 10;
    text-decoration: none;
    margin-right: var(--space-lg);
    position: relative;
    min-height: 44px;
}

.logo-img {
    height: auto;
    width: auto;
    max-height: 44px;
    object-fit: contain;
    transition: transform var(--transition-base);
    border-radius: 4px;
}

.logo:hover .logo-img {
    transform: scale(1.05);
}

.nav-menu {
    display: none;
    align-items: center;
    gap: var(--space-xl);
}

@media (min-width: 1024px) {
    .nav-menu {
        display: flex;
    }
}

.nav-menu > li > a {
    padding: var(--space-sm) var(--space-md);
    font-size: 0.9375rem;
    font-weight: 500;
    color: #334155;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    position: relative;
}

.nav-menu > li > a::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: var(--space-md);
    right: var(--space-md);
    height: 2px;
    background: linear-gradient(90deg, var(--color-accent-cyan), var(--color-accent-electric));
    transform: scaleX(0);
    transition: transform var(--transition-fast);
    border-radius: 1px;
}

.nav-menu > li > a:hover,
.nav-menu > li > a[aria-current="page"] {
    color: #0066FF;
    background: rgba(0, 102, 255, 0.06);
}

.nav-menu > li > a:hover::after,
.nav-menu > li > a[aria-current="page"]::after {
    transform: scaleX(1);
}

.has-dropdown {
    position: relative;
}

.dropdown-toggle {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
}

.dropdown-icon {
    transition: transform var(--transition-fast);
}

.has-dropdown:hover .dropdown-icon {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + var(--space-sm));
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    min-width: 220px;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--radius-xl);
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5), 0 0 20px rgba(0, 229, 255, 0.1);
    border: 1px solid rgba(0, 229, 255, 0.1);
    padding: var(--space-sm);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.has-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.dropdown-menu a {
    display: block;
    padding: var(--space-sm) var(--space-md);
    font-size: 0.875rem;
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    position: relative;
}

.dropdown-menu a:hover {
    color: var(--color-accent-cyan);
    background: linear-gradient(90deg, rgba(0, 229, 255, 0.08), rgba(108, 92, 231, 0.06));
    padding-left: calc(var(--space-md) + 4px);
}

.cta-button {
    display: inline-flex;
    align-items: center;
    padding: var(--space-sm) var(--space-xl);
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--bg-primary);
    background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-electric));
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-glow);
    letter-spacing: 0.02em;
    position: relative;
    overflow: hidden;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 28px rgba(0, 229, 255, 0.4);
}

.cta-button::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: linear-gradient(135deg, var(--color-accent-electric), var(--color-accent-cyan));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.cta-button:hover::before {
    opacity: 1;
}

.cta-button span {
    position: relative;
    z-index: 1;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    padding: 4px;
    z-index: 10;
    flex-shrink: 0;
    margin-left: var(--space-md);
}

@media (max-width: 1023px) {
    .mobile-menu-toggle {
        display: flex;
    }
}

.hamburger-line {
    width: 100%;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-base);
    transform-origin: center;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

.mobile-nav {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    background: var(--bg-primary);
    transform: translateX(100%);
    transition: transform var(--transition-slow);
    padding: var(--space-2xl) var(--space-xl);
    overflow-y: auto;
}

.mobile-nav.active {
    transform: translateX(0);
}

.mobile-nav-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-2xl);
}

.mobile-close-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.mobile-close-btn:hover {
    background: rgba(0, 229, 255, 0.1);
    color: var(--color-accent-cyan);
}

.mobile-nav-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.mobile-nav-list > li > a,
.mobile-dropdown-toggle {
    display: block;
    padding: var(--space-md) var(--space-sm);
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--text-primary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.mobile-nav-list > li > a:hover,
.mobile-dropdown-toggle:hover {
    background: rgba(0, 229, 255, 0.08);
    color: var(--color-accent-cyan);
}

.mobile-dropdown-menu {
    padding-left: var(--space-lg);
    display: none;
}

.mobile-has-dropdown.open .mobile-dropdown-menu {
    display: block;
}

/* === Hero 区域 - 科技感 === */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: calc(var(--navbar-height) + var(--space-3xl));
    padding-bottom: var(--space-3xl);
    overflow: hidden;
    background: linear-gradient(135deg, #050508 0%, #0A0E1A 30%, #0F172A 60%, #1E1B4B 100%);
}

.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 30% 50%, rgba(0, 229, 255, 0.06) 0%, transparent 60%),
        radial-gradient(ellipse at 70% 50%, rgba(108, 92, 231, 0.08) 0%, transparent 60%),
        radial-gradient(ellipse at 50% 80%, rgba(0, 217, 192, 0.04) 0%, transparent 50%);
    pointer-events: none;
}

.hero__background {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

/* 科技网格背景 */
.hero__grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 229, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 229, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
    animation: gridPulse 4s ease-in-out infinite;
}

@keyframes gridPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* 扫描线效果 */
.hero__scanline {
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 229, 255, 0.015) 2px,
        rgba(0, 229, 255, 0.015) 4px
    );
    pointer-events: none;
    animation: scanline 8s linear infinite;
}

@keyframes scanline {
    0% { transform: translateY(-100%); }
    100% { transform: translateY(100vh); }
}

/* 粒子光点 */
.hero__particles::before,
.hero__particles::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 229, 255, 0.08) 0%, transparent 70%);
}

.hero__particles::before {
    width: 700px;
    height: 700px;
    top: -250px;
    right: -150px;
    animation: float 20s ease-in-out infinite;
}

.hero__particles::after {
    width: 500px;
    height: 500px;
    bottom: -150px;
    left: -150px;
    animation: float 15s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(40px, -30px) scale(1.05); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

.hero__container {
    position: relative;
    z-index: 1;
}

.hero__content {
    animation: heroFadeIn 1.5s ease-out forwards;
    max-width: 720px;
    color: var(--text-primary);
}

@keyframes heroFadeIn {
    0% {
        opacity: 0;
        transform: translateY(30px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 科技渐变标题 */
.hero__title {
    background: linear-gradient(
        135deg,
        #FFFFFF 0%,
        #00E5FF 25%,
        #6C5CE7 50%,
        #00E5FF 75%,
        #FFFFFF 100%
    );
    background-size: 300% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shimmerText 4s linear infinite;
    font-size: clamp(2.8rem, 7vw, 4.5rem);
    font-weight: 800;
    line-height: 1.05;
    margin-bottom: var(--space-lg);
    letter-spacing: -0.03em;
    filter: drop-shadow(0 2px 20px rgba(0, 229, 255, 0.2));
}

@keyframes shimmerText {
    0% { background-position: 0% center; }
    100% { background-position: 300% center; }
}

.hero__subtitle {
    animation: heroFadeInUp 1.2s ease-out 0.4s both;
    font-size: clamp(1.05rem, 2vw, 1.3rem);
    line-height: 1.8;
    opacity: 0.8;
    margin-bottom: var(--space-2xl);
    max-width: 600px;
    font-weight: 300;
    letter-spacing: 0.02em;
    color: var(--text-secondary);
}

@keyframes heroFadeInUp {
    0% {
        opacity: 0;
        transform: translateY(25px);
    }
    100% {
        opacity: 0.9;
        transform: translateY(0);
    }
}

.hero__actions {
    animation: heroFadeInUp 1s ease-out 0.8s both;
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    margin-bottom: var(--space-4xl);
}

/* 统计卡片 - 玻璃拟态 */
.hero__stats {
    animation: heroFadeInUp 1s ease-out 1s both;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
    max-width: 720px;
}

.stat-card {
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(0, 229, 255, 0.1);
    border-radius: var(--radius-2xl);
    padding: var(--space-xl) var(--space-lg);
    text-align: center;
    transition: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 229, 255, 0.05), transparent);
    transition: left 0.8s ease;
}

.stat-card:hover::before {
    left: 100%;
}

.stat-card:hover {
    transform: translateY(-6px);
    background: rgba(15, 23, 42, 0.8);
    border-color: rgba(0, 229, 255, 0.3);
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.4), 0 0 20px rgba(0, 229, 255, 0.1);
}

.hero__badge {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    font-size: 0.875rem;
    font-weight: 600;
    background: rgba(0, 229, 255, 0.1);
    border: 1px solid rgba(0, 229, 255, 0.2);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-xl);
    backdrop-filter: blur(10px);
    color: var(--color-accent-cyan);
    font-family: var(--font-mono);
    letter-spacing: 0.1em;
}

.hero__title-accent {
    background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-electric), var(--color-accent-cyan));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    background-size: 200% auto;
    animation: shimmerText 3s linear infinite;
}

.hero__subtitle-light {
    opacity: 0.6;
    font-size: 0.95em;
    letter-spacing: 0.04em;
    color: var(--color-accent-cyan-light);
}

/* 统计卡片图标 - SVG 替代 emoji */
.stat-card__icon {
    width: 40px;
    height: 40px;
    margin: 0 auto var(--space-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent-cyan);
}

.stat-card__icon svg {
    width: 28px;
    height: 28px;
    stroke: var(--color-accent-cyan);
    filter: drop-shadow(0 0 8px rgba(0, 229, 255, 0.4));
}

.stat-card__number {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 800;
    margin-bottom: var(--space-xs);
    color: var(--text-primary);
    text-shadow: 0 0 20px rgba(0, 229, 255, 0.2);
}

.stat-card__label {
    font-size: 0.8125rem;
    opacity: 0.7;
    color: var(--text-secondary);
}

/* 滚动指示器 */
.hero__scroll-indicator {
    position: absolute;
    bottom: var(--space-2xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    color: rgba(0, 229, 255, 0.4);
    font-size: 0.75rem;
    animation: bounce 2s infinite;
    font-family: var(--font-mono);
    letter-spacing: 0.1em;
}

.scroll-mouse {
    width: 24px;
    height: 38px;
    border: 2px solid currentColor;
    border-radius: 12px;
    display: flex;
    justify-content: center;
    padding-top: 6px;
}

.scroll-wheel {
    width: 3px;
    height: 8px;
    background: currentColor;
    border-radius: 2px;
    animation: scroll 2s infinite;
}

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

@keyframes scroll {
    0% { opacity: 1; transform: translateY(0); }
    100% { opacity: 0; transform: translateY(10px); }
}

/* === 按钮 === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-xl);
    font-family: var(--font-body);
    font-size: 0.9375rem;
    font-weight: 600;
    line-height: 1.5;
    border-radius: var(--radius-lg);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn svg {
    transition: transform var(--transition-fast);
}

.btn:hover svg {
    transform: translateX(4px);
}

.btn--primary {
    color: var(--bg-primary);
    background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-electric));
    box-shadow: var(--shadow-glow);
    position: relative;
    overflow: hidden;
}

.btn--primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--color-accent-electric), var(--color-accent-cyan));
    opacity: 0;
    transition: opacity var(--transition-base);
    border-radius: inherit;
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(0, 229, 255, 0.4);
}

.btn--primary:hover::before {
    opacity: 1;
}

.btn--primary span, .btn--primary svg {
    position: relative;
    z-index: 1;
}

.btn--white {
    color: var(--color-accent-cyan);
    background: var(--bg-primary);
    border-color: rgba(0, 229, 255, 0.3);
}

.btn--white:hover {
    color: var(--color-accent-cyan-light);
    border-color: rgba(0, 229, 255, 0.6);
    background: rgba(0, 229, 255, 0.05);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0, 229, 255, 0.15);
}

.btn--white-outline {
    color: var(--text-primary);
    background: transparent;
    border-color: rgba(0, 229, 255, 0.3);
    backdrop-filter: blur(4px);
}

.btn--white-outline:hover {
    background: rgba(0, 229, 255, 0.08);
    border-color: rgba(0, 229, 255, 0.6);
    box-shadow: 0 0 20px rgba(0, 229, 255, 0.15);
}

.btn--ghost-white {
    color: var(--text-primary);
    background: transparent;
    border-color: rgba(0, 229, 255, 0.2);
}

.btn--ghost-white:hover {
    background: rgba(0, 229, 255, 0.08);
    border-color: rgba(0, 229, 255, 0.4);
    box-shadow: 0 0 15px rgba(0, 229, 255, 0.1);
}

.btn--lg {
    padding: var(--space-md) var(--space-2xl);
    font-size: 1rem;
}

/* === 区块 === */
.section {
    padding-block: var(--space-5xl);
    position: relative;
}

.section--alt {
    background: var(--bg-secondary);
    position: relative;
}

.section--alt::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 229, 255, 0.15), transparent);
}

.section--alt::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 229, 255, 0.15), transparent);
}

.section__header {
    text-align: center;
    max-width: 700px;
    margin-inline: auto;
    margin-bottom: var(--space-4xl);
}

.section__tag {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-accent-cyan);
    background: linear-gradient(135deg, rgba(0, 229, 255, 0.12), rgba(108, 92, 231, 0.08));
    border: 1px solid rgba(0, 229, 255, 0.15);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-md);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    font-family: var(--font-mono);
}

.section__title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.section__title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent-cyan), var(--color-accent-electric));
    margin: var(--space-lg) auto 0;
    border-radius: 2px;
    box-shadow: 0 0 15px var(--color-accent-cyan);
}

.section__desc {
    font-size: 1.0625rem;
    color: var(--text-secondary);
    line-height: 1.8;
    max-width: 640px;
    margin-inline: auto;
}

/* === 服务卡片 === */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
}

.service-card {
    background: var(--bg-card);
    border-radius: var(--radius-2xl);
    padding: var(--space-2xl);
    border: 1px solid rgba(0, 229, 255, 0.08);
    transition: all var(--transition-slow);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(8px);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-accent-cyan), var(--color-accent-electric), var(--color-accent-teal));
    transform: scaleX(0);
    transition: transform var(--transition-slow);
    transform-origin: left;
    box-shadow: 0 0 20px rgba(0, 229, 255, 0.3);
}

.service-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent 60%, rgba(0, 229, 255, 0.02));
    pointer-events: none;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(0, 229, 255, 0.1);
    border-color: rgba(0, 229, 255, 0.2);
}

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

.service-card--featured {
    grid-column: span 2;
    background: linear-gradient(135deg, rgba(0, 229, 255, 0.04), var(--bg-card), rgba(108, 92, 231, 0.03));
    border-color: rgba(0, 229, 255, 0.15);
}

.service-card__header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
}

.service-card__icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(0, 229, 255, 0.1), rgba(108, 92, 231, 0.08));
    border-radius: var(--radius-xl);
    color: var(--color-accent-cyan);
    font-size: 1.75rem;
    transition: all var(--transition-base);
    position: relative;
    border: 1px solid rgba(0, 229, 255, 0.1);
}

.service-card:hover .service-card__icon {
    transform: scale(1.1) rotate(5deg);
    background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-electric));
    color: var(--bg-primary);
    box-shadow: var(--shadow-glow);
}

.service-card__badge {
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-accent-cyan);
    background: rgba(0, 229, 255, 0.08);
    border-radius: var(--radius-full);
    font-family: var(--font-mono);
    letter-spacing: 0.05em;
}

.service-card__title {
    font-size: 1.375rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    line-height: 1.3;
    color: var(--text-primary);
}

.service-card__desc {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

.service-card__features {
    margin-bottom: var(--space-xl);
}

.service-card__features li {
    padding: var(--space-sm) 0;
    padding-left: var(--space-lg);
    position: relative;
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.service-card__features li::before {
    content: '›';
    position: absolute;
    left: 0;
    color: var(--color-accent-cyan);
    font-weight: 700;
    font-size: 1.2rem;
    text-shadow: 0 0 10px rgba(0, 229, 255, 0.4);
}

.service-card__link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 600;
    color: var(--color-accent-cyan);
    transition: all var(--transition-fast);
    position: relative;
}

.service-card__link:hover {
    gap: var(--space-md);
    color: var(--color-accent-cyan-light);
    text-shadow: 0 0 15px rgba(0, 229, 255, 0.3);
}

/* === 优势卡片 === */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--space-xl);
}

.advantage-card {
    padding: var(--space-2xl);
    border-radius: var(--radius-2xl);
    background: var(--bg-card);
    border: 1px solid rgba(0, 229, 255, 0.08);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(8px);
}

.advantage-card::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent-cyan), var(--color-accent-electric));
    transform: scaleX(0);
    transition: transform var(--transition-slow);
    transform-origin: left;
    box-shadow: 0 0 15px var(--color-accent-cyan);
}

.advantage-card:hover {
    border-color: rgba(0, 229, 255, 0.2);
    box-shadow: var(--shadow-lg), 0 0 20px rgba(0, 229, 255, 0.08);
    transform: translateY(-4px);
}

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

.advantage-card__icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(0, 229, 255, 0.1), rgba(108, 92, 231, 0.08));
    border-radius: var(--radius-xl);
    color: var(--color-accent-cyan);
    margin-bottom: var(--space-lg);
    transition: all var(--transition-base);
    border: 1px solid rgba(0, 229, 255, 0.1);
}

.advantage-card:hover .advantage-card__icon {
    background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-electric));
    color: var(--bg-primary);
    transform: scale(1.05);
    box-shadow: var(--shadow-glow);
}

.advantage-card__title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.advantage-card__desc {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* === CTA 区域 === */
.cta-section {
    position: relative;
    padding-block: var(--space-5xl);
    overflow: hidden;
    background: linear-gradient(135deg, #050508 0%, #0A0E1A 30%, #0F172A 60%, #1E1B4B 100%);
}

.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 30% 50%, rgba(0, 229, 255, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 50%, rgba(108, 92, 231, 0.08) 0%, transparent 50%);
}

.cta-section::after {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320'%3E%3Cpath fill='rgba(0,229,255,0.02)' d='M0,192L48,197.3C96,203 192,213 288,229.3C384,245 480,267 576,250.7C672,234 768,179 864,165.3C960,152 1056,181 1152,197.3C1248,213 1344,221 1392,225.3L1440,230L1440,320L1392,320C1344,320 1248,320 1152,320C1056,320 960,320 864,320C768,320 672,320 576,320C480,320 384,320 288,320C192,320 96,320 48,320L0,320Z'%3E%3C/path%3E%3C/svg%3E") bottom no-repeat;
    background-size: cover;
}

.cta-container {
    position: relative;
    z-index: 1;
}

.cta-content {
    text-align: center;
    color: var(--text-primary);
}

.cta-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
}

.cta-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent-cyan), transparent);
    margin: var(--space-lg) auto 0;
    border-radius: 2px;
    box-shadow: 0 0 15px var(--color-accent-cyan);
}

.cta-desc {
    font-size: 1.0625rem;
    opacity: 0.8;
    margin-bottom: var(--space-2xl);
    line-height: 1.8;
    font-weight: 300;
    color: var(--text-secondary);
}

.cta-actions {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

/* === 页面 Hero === */
.page-hero {
    padding-top: calc(var(--navbar-height) + var(--space-4xl));
    padding-bottom: var(--space-4xl);
    background: linear-gradient(135deg, #050508 0%, #0A0E1A 30%, #0F172A 60%, #1E1B4B 100%);
    color: var(--text-primary);
    position: relative;
    overflow: hidden;
}

.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(0, 229, 255, 0.06) 0%, transparent 40%),
        radial-gradient(circle at 80% 50%, rgba(108, 92, 231, 0.1) 0%, transparent 50%);
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.875rem;
    opacity: 0.8;
    margin-bottom: var(--space-xl);
    position: relative;
    z-index: 1;
    color: var(--text-secondary);
}

.breadcrumb a {
    transition: opacity var(--transition-fast);
    color: var(--text-secondary);
}

.breadcrumb a:hover {
    opacity: 1;
    color: var(--color-accent-cyan);
}

.breadcrumb__separator {
    opacity: 0.5;
    color: var(--text-tertiary);
}

.breadcrumb__current {
    opacity: 0.6;
    color: var(--text-tertiary);
}

.page-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    margin-bottom: var(--space-md);
    position: relative;
    z-index: 1;
    background: linear-gradient(135deg, var(--text-primary), var(--color-accent-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-desc {
    font-size: 1.125rem;
    opacity: 0.85;
    max-width: 600px;
    position: relative;
    z-index: 1;
    color: var(--text-secondary);
}

/* === 解决方案卡片 === */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-xl);
}

.solution-card {
    background: var(--bg-card);
    border-radius: var(--radius-2xl);
    padding: var(--space-2xl);
    border: 1px solid rgba(0, 229, 255, 0.08);
    transition: all var(--transition-base);
    backdrop-filter: blur(8px);
}

.solution-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg), 0 0 20px rgba(0, 229, 255, 0.08);
    border-color: rgba(0, 229, 255, 0.2);
}

.solution-card--featured {
    grid-column: span 2;
    background: linear-gradient(135deg, rgba(0, 229, 255, 0.05), var(--bg-card));
}

.solution-card__icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
    color: var(--color-accent-cyan);
}

.solution-card__title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.solution-card__desc {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    margin-bottom: var(--space-lg);
    line-height: 1.6;
}

.solution-card__cases {
    margin-bottom: var(--space-lg);
}

.solution-card__cases li {
    padding: var(--space-xs) 0;
    padding-left: var(--space-lg);
    position: relative;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.solution-card__cases li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-accent-cyan);
    font-weight: 700;
    text-shadow: 0 0 10px rgba(0, 229, 255, 0.4);
}

.solution-card__link {
    font-weight: 600;
    color: var(--color-accent-cyan);
    font-size: 0.9375rem;
    transition: all var(--transition-fast);
}

.solution-card__link:hover {
    color: var(--color-accent-cyan-light);
    text-shadow: 0 0 15px rgba(0, 229, 255, 0.3);
}

/* === 关于页面 === */
.about-intro {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--space-4xl);
    align-items: center;
}

.about-intro__title {
    font-size: 2rem;
    margin-bottom: var(--space-lg);
    color: var(--text-primary);
}

.about-intro__text {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-md);
}

.about-intro__stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

.stat-item {
    text-align: center;
    padding: var(--space-xl);
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(0, 229, 255, 0.08);
    backdrop-filter: blur(8px);
}

.stat-item__number {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-accent-cyan);
    margin-bottom: var(--space-xs);
    text-shadow: 0 0 20px rgba(0, 229, 255, 0.3);
}

.stat-item__label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.mission-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-xl);
}

.mission-card {
    padding: var(--space-2xl);
    background: var(--bg-card);
    border-radius: var(--radius-2xl);
    border: 1px solid rgba(0, 229, 255, 0.08);
    text-align: center;
    backdrop-filter: blur(8px);
}

.mission-card__icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
    color: var(--color-accent-cyan);
}

.mission-card__title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

.mission-card__text {
    color: var(--text-secondary);
    line-height: 1.7;
}

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

.mission-card__values li {
    padding: var(--space-xs) 0;
    color: var(--text-secondary);
}

.culture-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-xl);
}

.culture-item {
    padding: var(--space-2xl);
    background: linear-gradient(135deg, rgba(0, 229, 255, 0.04), var(--bg-card));
    border-radius: var(--radius-2xl);
    border: 1px solid rgba(0, 229, 255, 0.1);
    backdrop-filter: blur(8px);
}

.culture-item__title {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
    color: var(--color-accent-cyan);
}

.culture-item__text {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* === 回到顶部按钮 === */
.back-to-top {
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-electric));
    color: var(--bg-primary);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-glow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    z-index: var(--z-dropdown);
    border: 1px solid rgba(0, 229, 255, 0.3);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: linear-gradient(135deg, var(--color-accent-electric), var(--color-accent-cyan));
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 229, 255, 0.4);
}

/* === 动画系统 === */
[data-animate] {
    opacity: 0;
    transform: translateY(50px) scale(0.97);
    transition: opacity 1s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                transform 1s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

[data-reveal] {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                transform 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

[data-reveal].revealed {
    opacity: 1;
    transform: translateY(0);
}

.hero__content [data-reveal]:nth-child(1) {
    transform: translateX(-30px);
}

.hero__content [data-reveal]:nth-child(1).revealed {
    transform: translateX(0);
}

.hero__content [data-reveal]:nth-child(2) {
    transition-delay: 0.15s;
}

.hero__content [data-reveal]:nth-child(3) {
    transition-delay: 0.3s;
}

.hero__content [data-reveal]:nth-child(4) {
    transition-delay: 0.45s;
}

.hero__stats [data-animate]:nth-child(1) { transition-delay: 0.6s; }
.hero__stats [data-animate]:nth-child(2) { transition-delay: 0.75s; }
.hero__stats [data-animate]:nth-child(3) { transition-delay: 0.9s; }
.hero__stats [data-animate]:nth-child(4) { transition-delay: 1.05s; }

.services-grid [data-animate]:nth-child(1) { transition-delay: 0s; }
.services-grid [data-animate]:nth-child(2) { transition-delay: 0.12s; }
.services-grid [data-animate]:nth-child(3) { transition-delay: 0.24s; }
.services-grid [data-animate]:nth-child(4) { transition-delay: 0.36s; }

/* === 响应式 === */
@media (max-width: 1023px) {
    .hero__stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .service-card--featured {
        grid-column: span 1;
    }

    .solution-card--featured {
        grid-column: span 1;
    }

    .about-intro {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 767px) {
    :root {
        --navbar-height: 64px;
    }

    .hero {
        min-height: auto;
        padding-top: calc(var(--navbar-height) + var(--space-2xl));
        padding-bottom: var(--space-2xl);
    }

    .hero__stats {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-sm);
    }

    .stat-card {
        padding: var(--space-md);
    }

    .stat-card__number {
        font-size: 1.5rem;
    }

    .hero__actions {
        flex-direction: column;
    }

    .hero__actions .btn {
        width: 100%;
        justify-content: center;
    }

    .services-grid,
    .advantages-grid,
    .solutions-grid,
    .mission-grid,
    .culture-grid {
        grid-template-columns: 1fr;
    }

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

    .cta-actions {
        flex-direction: column;
    }

    .cta-actions .btn {
        width: 100%;
    }
}

@media (max-width: 479px) {
    .container {
        padding-inline: var(--space-md);
    }

    .hero__title {
        font-size: 2rem;
    }

    .section__title {
        font-size: 1.5rem;
    }

    .page-title {
        font-size: 1.75rem;
    }

    .service-card,
    .advantage-card,
    .solution-card,
    .mission-card,
    .culture-item {
        padding: var(--space-xl);
    }

    .back-to-top {
        bottom: var(--space-md);
        right: var(--space-md);
        width: 42px;
        height: 42px;
    }
}