/* ============================================
   全局样式与变量
   ============================================ */
:root {
    --primary-color: #1a1a2e;
    --secondary-color: #16213e;
    --accent-color: #0f3460;
    --gold-color: #d4af37;
    --text-primary: #ffffff;
    --text-secondary: #b8b8b8;
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 30px rgba(102, 126, 234, 0.3);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-bounce: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

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

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--primary-color);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body.loaded {
    opacity: 1;
    transition: opacity 0.5s ease-in;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ============================================
   导航栏
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(26, 26, 46, 0.85);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    z-index: 1000;
    padding: 1.2rem 0;
    transition: var(--transition-smooth);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.navbar.scrolled {
    padding: 0.8rem 0;
    background: rgba(26, 26, 46, 0.95);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid rgba(102, 126, 234, 0.2);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: var(--transition-smooth);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.1), transparent);
    transition: left 0.5s;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--gradient-1);
    transition: var(--transition-smooth);
    border-radius: 2px;
}

.nav-link:hover::before {
    left: 100%;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
    background: rgba(102, 126, 234, 0.05);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 80%;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
    padding: 10px;
    z-index: 10001;
    position: relative;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
    -webkit-user-select: none;
    touch-action: manipulation;
    -webkit-touch-callout: none;
    pointer-events: auto;
    background: transparent;
    border: none;
    outline: none;
}

.hamburger:active {
    opacity: 0.7;
    transform: scale(0.95);
}

.hamburger:focus {
    outline: 2px solid rgba(102, 126, 234, 0.5);
    outline-offset: 2px;
}

.hamburger span {
    width: 28px;
    height: 3px;
    background: var(--text-primary);
    transition: var(--transition-smooth);
    border-radius: 2px;
    display: block;
    transform-origin: center;
}

.hamburger.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.hamburger.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* ============================================
   Hero区域
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 100px 20px 50px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-1);
    opacity: 0.1;
    z-index: -1;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.1) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    max-width: 1200px;
    width: 100%;
    z-index: 1;
}

.hero-image-container {
    position: relative;
}

.image-wrapper {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    transform: perspective(1000px) rotateY(-5deg);
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
}

.image-wrapper:hover {
    transform: perspective(1000px) rotateY(0deg) scale(1.05);
}

.hero-image {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 20px;
}

.image-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.3) 0%, transparent 70%);
    animation: pulse 3s ease-in-out infinite;
    pointer-events: none;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.1); }
}

.hero-text {
    animation: fadeInUp 1s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-title {
    font-family: 'Playfair Display', serif;
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.title-line {
    display: block;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.title-line.accent {
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.hero-company {
    font-size: 2rem;
    font-weight: 600;
    color: var(--gold-color);
    margin-bottom: 1.5rem;
    text-shadow: 0 0 20px rgba(212, 175, 55, 0.3);
}

.hero-description {
    margin-bottom: 2rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    padding: 1rem 2.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-smooth);
    display: inline-block;
    position: relative;
    overflow: hidden;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    letter-spacing: 0.5px;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.25);
    transform: translate(-50%, -50%);
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1), height 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    width: 350px;
    height: 350px;
}

.btn:hover::after {
    left: 100%;
}

.btn-primary {
    background: var(--gradient-1);
    color: var(--text-primary);
    box-shadow: var(--shadow-md), 0 0 20px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(102, 126, 234, 0.5);
}

.btn-primary:active {
    transform: translateY(-2px) scale(1.02);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    border-color: rgba(255, 255, 255, 0.6);
    background: rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    color: var(--gold-color);
    border: 2px solid var(--gold-color);
    backdrop-filter: blur(10px);
}

.btn-outline:hover {
    background: var(--gold-color);
    color: var(--primary-color);
    box-shadow: var(--shadow-md), 0 0 20px rgba(212, 175, 55, 0.4);
    transform: translateY(-3px);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

.mouse {
    width: 30px;
    height: 50px;
    border: 2px solid var(--text-secondary);
    border-radius: 20px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 10px;
    background: var(--text-secondary);
    border-radius: 2px;
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% { opacity: 1; top: 10px; }
    100% { opacity: 0; top: 30px; }
}

/* ============================================
   统计卡片
   ============================================ */
.stats-section {
    padding: 80px 20px;
    background: var(--secondary-color);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.stat-card {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    padding: 2.5rem 2rem;
    border-radius: 20px;
    text-align: center;
    transition: var(--transition-smooth);
    border: 1px solid rgba(255, 255, 255, 0.08);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.15), transparent);
    transition: left 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.stat-card::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.1) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.4s;
}

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

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

.stat-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
    border-color: rgba(102, 126, 234, 0.4);
    background: rgba(255, 255, 255, 0.05);
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* ============================================
   公司特色区域
   ============================================ */
.featured-company {
    padding: 100px 20px;
    background: var(--primary-color);
    position: relative;
}

.company-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-family: 'Playfair Display', serif;
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.company-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: start;
}

.business-areas {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.business-card {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    padding: 2.5rem;
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.business-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-1);
    opacity: 0;
    transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 0;
}

.business-card::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
    z-index: 1;
}

.business-card > * {
    position: relative;
    z-index: 2;
}

.business-card:hover::before {
    opacity: 0.08;
}

.business-card:hover::after {
    width: 300px;
    height: 300px;
}

.business-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
    border-color: rgba(102, 126, 234, 0.4);
    background: rgba(255, 255, 255, 0.05);
}

.business-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.business-card h4 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--gold-color);
}

.business-card p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.business-stat {
    font-size: 0.9rem;
    color: var(--gold-color);
    font-weight: 600;
}

.company-visual {
    position: sticky;
    top: 100px;
}

.visual-card {
    background: var(--gradient-1);
    padding: 3rem;
    border-radius: 20px;
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.card-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.2) 0%, transparent 70%);
    animation: rotate 15s linear infinite;
}

.visual-card h4 {
    font-size: 2rem;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.visual-card p {
    position: relative;
    z-index: 1;
    margin-bottom: 0.5rem;
}

/* ============================================
   亮点区域
   ============================================ */
.highlights {
    padding: 100px 20px;
    background: var(--secondary-color);
}

.highlights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.highlight-card {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    padding: 3rem 2rem;
    border-radius: 24px;
    text-align: center;
    transition: var(--transition-smooth);
    border: 1px solid rgba(255, 255, 255, 0.08);
    position: relative;
    overflow: hidden;
}

.highlight-card::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: var(--gradient-1);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1), height 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0.12;
    z-index: 0;
}

.highlight-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    opacity: 0;
    transition: opacity 0.4s;
    z-index: 1;
}

.highlight-card > * {
    position: relative;
    z-index: 2;
}

.highlight-card:hover::before {
    width: 350px;
    height: 350px;
}

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

.highlight-card:hover {
    transform: translateY(-12px) scale(1.03);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
    border-color: rgba(102, 126, 234, 0.4);
    background: rgba(255, 255, 255, 0.05);
}

.highlight-icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    display: block;
}

.highlight-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--gold-color);
}

.highlight-card p {
    color: var(--text-secondary);
}

/* ============================================
   页脚
   ============================================ */
.footer {
    background: var(--primary-color);
    padding: 60px 20px 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--gold-color);
}

.footer-section p {
    color: var(--text-secondary);
    line-height: 1.8;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--text-primary);
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
}

/* ============================================
   页面特定样式
   ============================================ */
.page-header {
    padding: 180px 20px 100px;
    text-align: center;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.15) 0%, rgba(118, 75, 162, 0.15) 100%);
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid rgba(102, 126, 234, 0.2);
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-1);
    opacity: 0.1;
    z-index: 0;
}

.page-header::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.1) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
    z-index: 0;
}

.page-header h1 {
    font-family: 'Playfair Display', serif;
    font-size: 4.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    position: relative;
    z-index: 1;
    color: var(--text-primary);
    text-shadow: 0 4px 30px rgba(102, 126, 234, 0.4), 0 2px 10px rgba(0, 0, 0, 0.3);
    background: linear-gradient(135deg, #ffffff 0%, rgba(255, 255, 255, 0.95) 50%, rgba(212, 175, 55, 0.9) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
    line-height: 1.2;
    animation: fadeInUp 0.8s ease-out;
}

.page-header h1::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-1);
    border-radius: 2px;
    box-shadow: 0 0 20px rgba(102, 126, 234, 0.5);
}

.page-header p {
    font-size: 1.4rem;
    color: rgba(255, 255, 255, 0.85);
    position: relative;
    z-index: 1;
    font-weight: 400;
    letter-spacing: 0.02em;
    text-shadow: 0 1px 10px rgba(0, 0, 0, 0.2);
}

.content-section {
    padding: 80px 20px;
    max-width: 1000px;
    margin: 0 auto;
}

.content-card {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    padding: 3rem;
    border-radius: 24px;
    margin-bottom: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.content-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gradient-1);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.content-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
    border-color: rgba(102, 126, 234, 0.3);
    background: rgba(255, 255, 255, 0.05);
}

.content-card h2 {
    font-family: 'Playfair Display', serif;
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--gold-color);
}

.content-card h3 {
    font-size: 1.8rem;
    margin: 2rem 0 1rem;
    color: var(--text-primary);
}

.content-card p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.timeline {
    position: relative;
    padding-left: 3rem;
    margin: 2rem 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gradient-1);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    padding-left: 2rem;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -2.5rem;
    top: 0.5rem;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: var(--gradient-1);
    box-shadow: 0 0 20px rgba(102, 126, 234, 0.5);
}

.timeline-year {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--gold-color);
    margin-bottom: 0.5rem;
}

.timeline-content h4 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.timeline-content p {
    color: var(--text-secondary);
}

.photo-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.gallery-item {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    aspect-ratio: 4/3;
    cursor: pointer;
    transition: var(--transition-smooth);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-smooth);
    filter: brightness(0.9);
}

.gallery-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-1);
    opacity: 0;
    transition: opacity 0.4s;
    z-index: 1;
}

.gallery-item::after {
    content: 'View';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    color: white;
    font-weight: 600;
    font-size: 1.2rem;
    z-index: 2;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}

.gallery-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
    border-color: rgba(102, 126, 234, 0.4);
}

.gallery-item:hover img {
    transform: scale(1.15);
    filter: brightness(1);
}

.gallery-item:hover::before {
    opacity: 0.3;
}

.gallery-item:hover::after {
    transform: translate(-50%, -50%) scale(1);
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 2rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem 1.25rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition-smooth);
    backdrop-filter: blur(10px);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: rgba(102, 126, 234, 0.6);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1), var(--shadow-md);
    transform: translateY(-2px);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.4);
    transition: opacity 0.3s;
}

.form-group input:focus::placeholder,
.form-group textarea:focus::placeholder {
    opacity: 0.6;
}

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

/* ============================================
   响应式设计
   ============================================ */
@media (max-width: 768px) {
    .hamburger {
        display: flex !important;
        visibility: visible !important;
        opacity: 1 !important;
        pointer-events: auto !important;
    }

    .nav-menu {
        position: fixed !important;
        top: 0 !important;
        left: -100% !important;
        flex-direction: column !important;
        background: rgba(26, 26, 46, 0.98) !important;
        backdrop-filter: blur(20px) saturate(180%) !important;
        -webkit-backdrop-filter: blur(20px) saturate(180%) !important;
        width: 100% !important;
        height: 100vh !important;
        text-align: center;
        transition: left 0.4s cubic-bezier(0.4, 0, 0.2, 1) !important;
        padding: 80px 0 2rem !important;
        box-shadow: var(--shadow-xl) !important;
        z-index: 9999 !important;
        overflow-y: auto !important;
        gap: 0 !important;
        -webkit-overflow-scrolling: touch;
        visibility: visible !important;
        opacity: 1 !important;
        display: flex !important;
        transform: translateX(0) !important;
    }

    .nav-menu.active {
        left: 0 !important;
        transform: translateX(0) !important;
    }

    .nav-menu li {
        width: 100%;
        margin: 0;
    }

    .nav-menu .nav-link {
        display: block;
        width: 100%;
        padding: 1.2rem 2rem;
        border-radius: 0;
        text-align: center;
        font-size: 1.1rem;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .nav-menu .nav-link::after {
        display: none;
    }

    .nav-menu .nav-link:hover,
    .nav-menu .nav-link.active {
        background: rgba(102, 126, 234, 0.1);
        border-left: 4px solid rgba(102, 126, 234, 0.8);
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-company {
        font-size: 1.5rem;
    }

    .company-content {
        grid-template-columns: 1fr;
    }

    .company-visual {
        position: relative;
        top: 0;
    }

    .section-title {
        font-size: 2rem;
    }

    .page-header {
        padding: 140px 20px 60px;
    }

    .page-header h1 {
        font-size: 2.8rem;
        margin-bottom: 1rem;
    }

    .page-header p {
        font-size: 1.1rem;
    }

    .stats-grid,
    .business-areas,
    .highlights-grid {
        grid-template-columns: 1fr;
    }

    /* Fix inline grid layouts for mobile */
    .content-card > div[style*="grid-template-columns"] {
        grid-template-columns: 1fr !important;
    }

    /* About page profile section */
    .content-card > div[style*="grid-template-columns: 1fr 2fr"] {
        grid-template-columns: 1fr !important;
        gap: 2rem !important;
    }

    /* Career page company hero */
    .content-card h2[style*="font-size: 3rem"] {
        font-size: 2rem !important;
    }

    /* Two-column layouts */
    .content-section > div[style*="grid-template-columns: 1fr 1fr"] {
        grid-template-columns: 1fr !important;
        gap: 2rem !important;
    }

    /* Contact page form layout */
    .content-section > div[style*="grid-template-columns: 1fr 1fr"][style*="align-items: start"] {
        grid-template-columns: 1fr !important;
        gap: 2rem !important;
    }

    /* Timeline padding adjustment */
    .timeline {
        padding-left: 2rem;
    }

    /* Content card padding */
    .content-card {
        padding: 2rem !important;
    }

    /* Photo gallery */
    .photo-gallery {
        grid-template-columns: 1fr !important;
    }

    /* Business areas minmax adjustment */
    .business-areas[style*="minmax(300px"] {
        grid-template-columns: 1fr !important;
    }

    /* Profile grid */
    .profile-grid {
        grid-template-columns: 1fr !important;
        gap: 2rem !important;
    }

    /* Two column grids */
    .two-column-grid {
        grid-template-columns: 1fr !important;
        gap: 2rem !important;
    }

    /* Company hero title */
    .company-hero-title {
        font-size: 2rem !important;
    }

    /* Contact grid */
    .contact-grid {
        grid-template-columns: 1fr !important;
        gap: 2rem !important;
    }

    /* Fix overflow issues */
    .content-section {
        padding: 60px 20px;
    }

    /* Image adjustments */
    .hero-image-container {
        margin-bottom: 2rem;
    }

    /* Button spacing */
    .hero-buttons {
        gap: 1rem;
    }

    /* Text sizing */
    .hero-description p {
        font-size: 0.9rem;
    }

    /* Stat label text */
    .stat-label {
        font-size: 0.9rem;
    }

    /* Large font sizes */
    h2[style*="font-size: 3rem"],
    .content-card h2[style*="font-size: 3rem"] {
        font-size: 2rem !important;
    }

    /* Large icons */
    div[style*="font-size: 3rem"] {
        font-size: 2.5rem !important;
    }

    div[style*="font-size: 5rem"] {
        font-size: 3rem !important;
    }

    /* Text sizing adjustments */
    p[style*="font-size: 1.3rem"] {
        font-size: 1.1rem !important;
    }

    p[style*="font-size: 1.2rem"] {
        font-size: 1rem !important;
    }

    h3[style*="font-size: 2rem"] {
        font-size: 1.5rem !important;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }

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

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

    .page-header h1 {
        font-size: 2rem;
    }

    .content-card h2 {
        font-size: 1.8rem;
    }

    .content-card h3 {
        font-size: 1.3rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .business-icon,
    .highlight-icon {
        font-size: 3rem;
    }

    .content-card {
        padding: 1.5rem !important;
    }

    .timeline {
        padding-left: 1.5rem;
    }

    .timeline-item {
        padding-left: 1.5rem;
    }

    .company-hero-title {
        font-size: 1.5rem !important;
    }

    .profile-grid {
        gap: 1.5rem !important;
    }

    .two-column-grid {
        gap: 1.5rem !important;
    }

    .content-section {
        padding: 40px 15px;
    }

    .content-card {
        padding: 1.5rem !important;
    }

    .page-header {
        padding: 120px 20px 50px;
    }

    .page-header h1 {
        font-size: 2.2rem;
        margin-bottom: 0.8rem;
    }

    .page-header p {
        font-size: 1rem;
    }

    .hero {
        padding: 80px 20px 40px;
    }

    /* Extra small adjustments */
    div[style*="font-size: 3rem"] {
        font-size: 2rem !important;
    }

    div[style*="font-size: 5rem"] {
        font-size: 2.5rem !important;
    }

    h2[style*="font-size: 3rem"] {
        font-size: 1.8rem !important;
    }

    p[style*="font-size: 1.3rem"] {
        font-size: 1rem !important;
    }

    h3[style*="font-size: 2rem"] {
        font-size: 1.3rem !important;
    }
}

/* ============================================
   动画工具类
   ============================================ */
.fade-in {
    animation: fadeIn 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.slide-up {
    animation: slideInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.scale-in {
    animation: scaleIn 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

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

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.slide-up {
    animation: slideUp 0.8s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}