/* ========================================
   T.J.F.S.集团 - 天工未来
   主样式表 - 毛玻璃质感增强版
   ======================================== */

/* 基础重置与变量 */
:root {
    --primary-color: #A8FCF3;
    --primary-dark: #7de8dc;
    --secondary-color: #1a1a2e;
    --accent-color: #16213e;
    --text-light: #ffffff;
    --text-dark: #1a1a2e;
    --text-muted: #6b7280;
    --bg-light: #f8fafc;
    --bg-dark: #0f0f1a;
    --border-color: #e5e7eb;
    --gradient-1: linear-gradient(135deg, #A8FCF3 0%, #7de8dc 50%, #5dd4c7 100%);
    --gradient-2: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    --glass-bg: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.15);
    --glass-dark-bg: rgba(15, 15, 26, 0.7);
    --glass-dark-border: rgba(168, 252, 243, 0.2);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 40px rgba(168, 252, 243, 0.15);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --border-radius: 12px;
    --border-radius-lg: 20px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-light);
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

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

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    font-size: 15px;
    font-weight: 500;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    gap: 8px;
}

.btn-primary {
    background: var(--gradient-1);
    color: var(--text-dark);
    box-shadow: 0 4px 15px rgba(168, 252, 243, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(168, 252, 243, 0.5), var(--shadow-glow);
}

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

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--text-dark);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    padding: 8px 20px;
    font-size: 14px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: var(--text-dark);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
}

/* 导航栏 - 毛玻璃增强 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 15, 26, 0.85);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border-bottom: 1px solid var(--glass-dark-border);
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(15, 15, 26, 0.95);
    backdrop-filter: blur(40px);
    -webkit-backdrop-filter: blur(40px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3), var(--shadow-glow);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 20px;
    color: var(--text-light);
}

.logo-icon {
    color: var(--primary-color);
    font-size: 24px;
}

.logo-img {
    width: 28px;
    height: 28px;
    object-fit: contain;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 5px;
}

.nav-link {
    padding: 8px 16px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
    font-weight: 500;
    border-radius: 20px;
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    background: rgba(168, 252, 243, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-light);
    transition: var(--transition);
}

/* 英雄区 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: var(--bg-dark);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(168, 252, 243, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 50%, rgba(125, 232, 220, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 100%, rgba(93, 212, 199, 0.1) 0%, transparent 50%);
}

.particles {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    padding: 20px;
    max-width: 900px;
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: var(--glass-dark-bg);
    border: 1px solid var(--glass-dark-border);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 50px;
    color: var(--primary-color);
    font-size: 13px;
    letter-spacing: 2px;
    margin-bottom: 30px;
}

.hero-title {
    font-size: clamp(48px, 10vw, 96px);
    font-weight: 900;
    margin-bottom: 10px;
    line-height: 1.1;
}

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

.hero-subtitle {
    font-size: clamp(18px, 3vw, 28px);
    color: rgba(255, 255, 255, 0.6);
    font-weight: 300;
    letter-spacing: 8px;
    margin-bottom: 20px;
}

.hero-tagline {
    font-size: clamp(20px, 4vw, 32px);
    color: var(--text-light);
    font-weight: 500;
    margin-bottom: 10px;
}

.hero-desc {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.5);
    font-style: italic;
    margin-bottom: 40px;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
    padding: 16px 20px;
    background: var(--glass-dark-bg);
    border: 1px solid var(--glass-dark-border);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--border-radius);
    min-width: 120px;
    flex: 1 1 auto;
}

.stat-number {
    display: block;
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-label {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.5);
}

.hero-actions {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: rgba(255, 255, 255, 0.4);
    font-size: 12px;
}

.scroll-arrow {
    width: 20px;
    height: 30px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 10px;
    margin: 10px auto 0;
    position: relative;
}

.scroll-arrow::before {
    content: '';
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--primary-color);
    border-radius: 2px;
    animation: scrollBounce 1.5s infinite;
}

@keyframes scrollBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); opacity: 1; }
    50% { transform: translateX(-50%) translateY(8px); opacity: 0.5; }
}

/* 通用区块样式 */
.section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header.light {
    color: var(--text-light);
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 20px;
    color: var(--primary-color);
    font-size: 12px;
    letter-spacing: 2px;
    margin-bottom: 15px;
}

.section-title {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.section-header.light .section-title {
    color: var(--text-light);
}

.section-desc {
    font-size: 18px;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

.section-header.light .section-desc {
    color: rgba(255, 255, 255, 0.6);
}

/* 快速导航 - hero与about之间的跳转区 */
.quick-nav {
    background: var(--bg-light);
    padding: 40px 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.quick-nav-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 1000px;
    margin: 0 auto;
}

.quick-nav-card {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 28px 32px;
    background: var(--bg-dark);
    border: 1px solid rgba(168, 252, 243, 0.12);
    border-radius: var(--border-radius-lg);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    position: relative;
    overflow: hidden;
}

.quick-nav-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(168, 252, 243, 0.10) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 50%, rgba(125, 232, 220, 0.06) 0%, transparent 60%);
    pointer-events: none;
}

.quick-nav-card:hover {
    border-color: rgba(168, 252, 243, 0.3);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(168, 252, 243, 0.12), var(--shadow-glow);
}

.quick-nav-card:hover::before {
    background:
        radial-gradient(ellipse at 20% 50%, rgba(168, 252, 243, 0.18) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 50%, rgba(125, 232, 220, 0.10) 0%, transparent 60%);
}

.quick-nav-icon {
    width: 52px;
    height: 52px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(168, 252, 243, 0.1);
    border: 1px solid rgba(168, 252, 243, 0.2);
    border-radius: 14px;
    color: var(--primary-color);
    transition: var(--transition);
}

.quick-nav-icon svg {
    width: 26px;
    height: 26px;
}

.quick-nav-card:hover .quick-nav-icon {
    background: rgba(168, 252, 243, 0.18);
    border-color: rgba(168, 252, 243, 0.4);
    box-shadow: 0 0 20px rgba(168, 252, 243, 0.15);
}

.quick-nav-info {
    flex: 1;
    min-width: 0;
}

.quick-nav-info h3 {
    font-size: 17px;
    font-weight: 600;
    color: #e2e8f0;
    margin-bottom: 4px;
}

.quick-nav-info p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.45);
    margin: 0;
}

.quick-nav-arrow {
    font-size: 20px;
    color: rgba(168, 252, 243, 0.4);
    font-weight: 300;
    transition: all 0.35s ease;
    flex-shrink: 0;
}

.quick-nav-card:hover .quick-nav-arrow {
    color: var(--primary-color);
    transform: translateX(4px);
}

@media (max-width: 640px) {
    .quick-nav-grid {
        grid-template-columns: 1fr;
    }
    .quick-nav-card {
        padding: 20px 24px;
    }
}

/* 关于我们 - 毛玻璃卡片 */
.about {
    background: var(--bg-light);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 30px;
    margin-bottom: 80px;
}

.about-card {
    background: white;
    padding: 40px 30px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    text-align: center;
    border: 1px solid transparent;
}

.about-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(168, 252, 243, 0.1);
    border-color: rgba(168, 252, 243, 0.3);
}

.about-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    color: var(--primary-color);
    stroke-width: 1.5;
}

.about-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.about-card p {
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.7;
}

.about-timeline {
    background: white;
    padding: 50px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.timeline-title {
    text-align: center;
    font-size: 28px;
    margin-bottom: 40px;
    color: var(--text-dark);
}

.timeline {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 30px;
}

.timeline-item {
    flex: 1;
    min-width: 200px;
    text-align: center;
    position: relative;
    padding: 20px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border-radius: 50%;
    box-shadow: 0 0 0 6px rgba(168, 252, 243, 0.2);
}

.timeline-year {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
    margin-top: 30px;
}

.timeline-content h4 {
    font-size: 18px;
    margin-bottom: 10px;
    color: var(--text-dark);
}

.timeline-content p {
    color: var(--text-muted);
    font-size: 14px;
}

/* 核心价值观 - 深色毛玻璃 */
.values {
    background: var(--bg-dark);
    position: relative;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.value-card {
    background: var(--glass-dark-bg);
    border: 1px solid var(--glass-dark-border);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--border-radius-lg);
    padding: 40px 30px;
    position: relative;
    transition: var(--transition);
}

.value-card:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(168, 252, 243, 0.4);
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), var(--shadow-glow);
}

.value-number {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 48px;
    font-weight: 900;
    color: rgba(168, 252, 243, 0.1);
}

.value-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 20px;
    color: var(--primary-color);
    stroke-width: 1.5;
}

.value-card h3 {
    font-size: 24px;
    color: var(--text-light);
    margin-bottom: 5px;
}

.value-en {
    font-size: 14px;
    color: var(--primary-color);
    margin-bottom: 15px;
    font-style: italic;
}

.value-card > p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 15px;
    line-height: 1.7;
    margin-bottom: 20px;
}

.value-list {
    list-style: none;
}

.value-list li {
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
    padding: 8px 0;
    padding-left: 20px;
    position: relative;
}

.value-list li::before {
    content: '\2192';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

/* 技术哲学 - 新增部分 */
.philosophy {
    background: var(--bg-light);
}

.philosophy-content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-bottom: 60px;
    max-width: 1000px;
    margin: 0 auto 60px auto;
}

.philosophy-card {
    background: white;
    padding: 35px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: 1px solid transparent;
}

.philosophy-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(168, 252, 243, 0.1);
    border-color: rgba(168, 252, 243, 0.3);
}

.philosophy-icon {
    width: 56px;
    height: 56px;
    margin-bottom: 20px;
    color: var(--primary-color);
    stroke-width: 1.5;
}

.philosophy-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.philosophy-card p {
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.8;
}

.philosophy-quote {
    background: var(--glass-dark-bg);
    border: 1px solid var(--glass-dark-border);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--border-radius-lg);
    padding: 50px;
    text-align: center;
    position: relative;
}

.quote-icon {
    font-size: 48px;
    color: var(--primary-color);
    opacity: 0.3;
    line-height: 1;
    margin-bottom: 20px;
}

.philosophy-quote blockquote {
    font-size: 18px;
    color: var(--text-light);
    font-style: italic;
    line-height: 1.8;
    margin-bottom: 20px;
}

.philosophy-quote cite {
    font-size: 14px;
    color: var(--primary-color);
}

/* 研究方向 */
.research {
    background: var(--bg-light);
}

.research-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.research-card {
    background: white;
    padding: 35px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    position: relative;
    border: 1px solid transparent;
}

.research-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(168, 252, 243, 0.1);
    border-color: rgba(168, 252, 243, 0.3);
}

.research-card.featured {
    grid-column: 1 / -1;
    background: var(--gradient-2);
    color: white;
}

.research-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    padding: 6px 16px;
    background: var(--primary-color);
    color: var(--text-dark);
    font-size: 12px;
    font-weight: 600;
    border-radius: 20px;
}

.research-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 20px;
    color: var(--primary-color);
    stroke-width: 1.5;
}

.research-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.research-card.featured h3 {
    color: white;
}

.research-card p {
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.7;
    margin-bottom: 20px;
}

.research-card.featured p {
    color: rgba(255, 255, 255, 0.8);
}

.research-tags {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.research-tags span {
    padding: 6px 14px;
    background: var(--glass-bg);
    color: var(--primary-color);
    font-size: 12px;
    border-radius: 20px;
    border: 1px solid var(--glass-border);
}

.research-7a {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid rgba(168, 252, 243, 0.2);
}

.7a-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(168, 252, 243, 0.2);
    color: var(--primary-color);
    font-size: 13px;
    font-weight: 600;
    border-radius: 20px;
    margin-bottom: 10px;
}

.research-7a p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 15px;
    margin: 0;
}

/* 业务领域 - 深色毛玻璃 */
.business {
    background: var(--bg-dark);
}

.business-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 25px;
    margin-bottom: 60px;
}

.business-card {
    background: var(--glass-dark-bg);
    border: 1px solid var(--glass-dark-border);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--border-radius-lg);
    padding: 40px 25px;
    text-align: center;
    transition: var(--transition);
}

.business-card:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(168, 252, 243, 0.4);
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), var(--shadow-glow);
}

.business-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 20px;
    color: var(--primary-color);
    stroke-width: 1.5;
}

.business-card h3 {
    font-size: 18px;
    color: var(--text-light);
    margin-bottom: 10px;
}

.business-card p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
}

.business-strategy {
    background: var(--glass-dark-bg);
    border: 1px solid var(--glass-dark-border);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--border-radius-lg);
    padding: 50px;
}

.business-strategy h3 {
    text-align: center;
    font-size: 28px;
    color: var(--text-light);
    margin-bottom: 40px;
}

.strategy-timeline {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 30px;
}

.strategy-item {
    flex: 1;
    min-width: 200px;
    text-align: center;
    padding: 30px;
    position: relative;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--border-radius);
    border: 1px solid var(--glass-dark-border);
    transition: var(--transition);
}

.strategy-item:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.06);
}

.strategy-phase {
    display: inline-block;
    padding: 8px 20px;
    background: var(--primary-color);
    color: var(--text-dark);
    font-size: 13px;
    font-weight: 600;
    border-radius: 20px;
    margin-bottom: 20px;
}

.strategy-item h4 {
    font-size: 20px;
    color: var(--text-light);
    margin-bottom: 10px;
}

.strategy-item p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
}

/* 子公司 */
.subsidiary {
    background: var(--bg-light);
}

.subsidiary-content {
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.subsidiary-info {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 0;
}

.subsidiary-logo {
    background: var(--gradient-2);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 60px 40px;
}

.logo-text-large {
    font-size: 72px;
    font-weight: 900;
    color: var(--primary-color);
    text-shadow: 0 0 40px rgba(168, 252, 243, 0.5);
}

.subsidiary-logo-img {
    width: 80px;
    height: 80px;
    object-fit: contain;
}

.subsidiary-details {
    padding: 50px;
}

.subsidiary-details h3 {
    font-size: 32px;
    color: var(--text-dark);
    margin-bottom: 5px;
}

.subsidiary-en {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.subsidiary-slogan {
    font-size: 18px;
    color: var(--primary-color);
    font-style: italic;
    margin-bottom: 20px;
}

.subsidiary-desc {
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 30px;
}

.subsidiary-projects h4 {
    font-size: 18px;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 30px;
}

.project-tag {
    padding: 8px 16px;
    background: rgba(168, 252, 243, 0.1);
    color: var(--text-dark);
    font-size: 13px;
    border-radius: 20px;
    border: 1px solid rgba(168, 252, 243, 0.3);
}

.project-tag.highlight {
    background: var(--primary-color);
    color: var(--text-dark);
    font-weight: 500;
}

/* 合作伙伴 */
.partners {
    background: var(--bg-light);
}

.partners-content {
    max-width: 1000px;
    margin: 0 auto;
}

.partners-intro {
    text-align: center;
    margin-bottom: 50px;
}

.partners-intro h3 {
    font-size: 28px;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.partners-intro p {
    color: var(--text-muted);
    font-size: 16px;
}

.partners-types {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 25px;
    margin-bottom: 50px;
}

.partner-type {
    background: white;
    padding: 35px 25px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: var(--transition);
    border: 1px solid transparent;
}

.partner-type:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(168, 252, 243, 0.1);
    border-color: rgba(168, 252, 243, 0.3);
}

.type-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 15px;
    color: var(--primary-color);
    stroke-width: 1.5;
}

.partner-type h4 {
    font-size: 18px;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.partner-type p {
    color: var(--text-muted);
    font-size: 14px;
}

.partners-benefits {
    background: white;
    padding: 40px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: 30px;
}

.partners-benefits h3 {
    text-align: center;
    font-size: 24px;
    color: var(--text-dark);
    margin-bottom: 30px;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.benefit-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 15px;
    background: rgba(168, 252, 243, 0.05);
    border-radius: 10px;
    border: 1px solid rgba(168, 252, 243, 0.1);
}

.benefit-icon {
    width: 28px;
    height: 28px;
    background: var(--primary-color);
    color: var(--text-dark);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    flex-shrink: 0;
}

.partners-cta {
    text-align: center;
}

/* 人才招聘 - 深色毛玻璃 */
.careers {
    background: var(--bg-dark);
}

.careers-intro {
    text-align: center;
    margin-bottom: 50px;
}

.careers-intro h3 {
    font-size: 28px;
    color: var(--text-light);
    margin-bottom: 15px;
}

.careers-intro p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 16px;
    max-width: 700px;
    margin: 0 auto;
}

.careers-benefits {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 25px;
    margin-bottom: 60px;
}

.benefit-card {
    background: var(--glass-dark-bg);
    border: 1px solid var(--glass-dark-border);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--border-radius-lg);
    padding: 35px 25px;
    text-align: center;
    transition: var(--transition);
}

.benefit-card:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(168, 252, 243, 0.4);
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), var(--shadow-glow);
}

.benefit-card .benefit-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 15px;
    background: none;
    color: var(--primary-color);
}

.benefit-card h4 {
    font-size: 18px;
    color: var(--text-light);
    margin-bottom: 10px;
}

.benefit-card p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
}

.careers-positions h3 {
    text-align: center;
    font-size: 28px;
    color: var(--text-light);
    margin-bottom: 30px;
}

.position-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.position-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 25px 30px;
    background: var(--glass-dark-bg);
    border: 1px solid var(--glass-dark-border);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.position-item:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(168, 252, 243, 0.4);
    transform: translateX(5px);
}

.position-info h4 {
    font-size: 18px;
    color: var(--text-light);
    margin-bottom: 5px;
}

.position-dept {
    font-size: 13px;
    color: var(--primary-color);
}

.position-meta {
    display: flex;
    gap: 20px;
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
}

.position-type {
    padding: 4px 12px;
    background: rgba(168, 252, 243, 0.1);
    border-radius: 20px;
    font-size: 12px;
}

/* 联系我们 */
.contact {
    background: var(--bg-light);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 50px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.contact-card {
    background: white;
    padding: 30px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: var(--transition);
    border: 1px solid transparent;
}

.contact-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg), 0 0 20px rgba(168, 252, 243, 0.1);
    border-color: rgba(168, 252, 243, 0.3);
}

.contact-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 15px;
    color: var(--primary-color);
    stroke-width: 1.5;
}

.contact-card h3 {
    font-size: 18px;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.contact-card p,
.contact-card a {
    color: var(--text-muted);
    font-size: 15px;
}

.contact-card a:hover {
    color: var(--primary-color);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 10px;
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(168, 252, 243, 0.1);
    transition: var(--transition);
    color: var(--primary-color);
}

.social-link:hover {
    transform: scale(1.2);
    background: var(--primary-color);
    color: var(--text-dark);
    box-shadow: 0 0 20px rgba(168, 252, 243, 0.4);
}

.social-link svg {
    width: 20px;
    height: 20px;
}

.contact-form-wrapper {
    background: white;
    padding: 40px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.contact-form h3 {
    font-size: 24px;
    color: var(--text-dark);
    margin-bottom: 25px;
}

.form-group {
    margin-bottom: 20px;
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    font-size: 15px;
    transition: var(--transition);
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(168, 252, 243, 0.2);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* 页脚 */
.footer {
    background: var(--bg-dark);
    padding: 60px 0 30px;
    border-top: 1px solid var(--glass-dark-border);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    margin-bottom: 40px;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: 700;
    color: var(--text-light);
    margin-bottom: 15px;
}

.footer-logo .logo-img {
    width: 32px;
    height: 32px;
}

.footer-slogan {
    color: var(--text-light);
    font-size: 16px;
    margin-bottom: 5px;
}

.footer-en {
    color: rgba(255, 255, 255, 0.4);
    font-size: 13px;
    font-style: italic;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.footer-column h4 {
    font-size: 16px;
    color: var(--text-light);
    margin-bottom: 20px;
}

.footer-column ul li {
    margin-bottom: 10px;
}

.footer-column ul li a {
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
    transition: var(--transition);
}

.footer-column ul li a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.4);
    font-size: 13px;
}

.disclaimer-text {
    color: rgba(255, 255, 255, 0.5) !important;
    font-size: 12px !important;
    line-height: 1.6;
    margin-bottom: 4px;
}

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

.real-about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    margin-top: 40px;
}

.real-about-lang {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.real-about-lang h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--primary-color);
}

.real-about-lang p {
    color: #4b5563;
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 12px;
}

.real-about-lang .real-about-highlight {
    color: var(--text-dark);
    font-weight: 600;
    font-size: 16px;
    margin-top: 16px;
    margin-bottom: 8px;
}

.real-about-lang ul {
    list-style: none;
    padding: 0;
    margin: 12px 0;
}

.real-about-lang ul li {
    color: #4b5563;
    font-size: 15px;
    line-height: 1.8;
    padding: 6px 0 6px 20px;
    position: relative;
}

.real-about-lang ul li::before {
    content: '\25B8';
    position: absolute;
    left: 0;
    color: var(--primary-dark);
    font-weight: bold;
}

@media (max-width: 768px) {
    .real-about-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .real-about-lang {
        padding: 25px;
    }
}

/* 求助与预防指南 */
.help-guide {
    background: linear-gradient(180deg, #f0fdfa 0%, var(--bg-light) 40%);
    border-top: 3px solid var(--primary-color);
    position: relative;
}

.help-guide::before {
    content: '';
    position: absolute;
    top: -3px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-1);
}

.help-intro-card {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: 50px 60px;
    box-shadow: var(--shadow-md);
    margin-bottom: 60px;
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.help-intro-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-1);
}

.help-intro-icon {
    width: 56px;
    height: 56px;
    margin-bottom: 20px;
    color: var(--primary-color);
    stroke-width: 1.5;
}

.help-intro-card h3 {
    font-size: 24px;
    color: var(--text-dark);
    margin-bottom: 20px;
    font-weight: 700;
}

.help-intro-card p {
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.9;
    margin-bottom: 12px;
}

.help-intro-card p:last-child {
    margin-bottom: 0;
}

.help-category {
    margin-bottom: 50px;
}

.help-category:last-child {
    margin-bottom: 0;
}

.help-category-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 2px solid rgba(168, 252, 243, 0.3);
}

.help-category-icon {
    font-size: 28px;
    line-height: 1;
}

.help-category-header h3 {
    font-size: 22px;
    color: var(--text-dark);
    font-weight: 600;
}

.help-org-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 20px;
}

.help-org-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.help-org-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg), 0 0 20px rgba(168, 252, 243, 0.1);
    border-color: rgba(168, 252, 243, 0.3);
}

.help-org-card h4 {
    font-size: 17px;
    color: var(--text-dark);
    margin-bottom: 8px;
    font-weight: 600;
}

.help-org-link {
    display: inline-block;
    color: var(--primary-color);
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 12px;
    padding: 4px 12px;
    background: rgba(168, 252, 243, 0.1);
    border-radius: 20px;
    transition: var(--transition);
}

.help-org-link:hover {
    background: var(--primary-color);
    color: var(--text-dark);
}

.help-org-card p {
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.8;
}

@media (max-width: 768px) {
    .help-intro-card {
        padding: 30px 25px;
    }

    .help-org-grid {
        grid-template-columns: 1fr;
    }
}

/* 弹窗 - 毛玻璃效果 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--glass-dark-bg);
    border: 1px solid var(--glass-dark-border);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    padding: 40px;
    border-radius: var(--border-radius-lg);
    max-width: 500px;
    width: 100%;
    position: relative;
    max-height: 90vh;
    overflow-y: auto;
    color: var(--text-light);
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 28px;
    cursor: pointer;
    color: rgba(255, 255, 255, 0.6);
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--text-light);
}

.modal-content h3 {
    font-size: 24px;
    color: var(--text-light);
    margin-bottom: 10px;
}

#applyPositionName {
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 25px;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(15, 15, 26, 0.98);
        backdrop-filter: blur(30px);
        -webkit-backdrop-filter: blur(30px);
        flex-direction: column;
        padding: 20px;
        gap: 5px;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

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

    .mobile-toggle {
        display: flex;
    }

    .nav-actions .btn-outline {
        display: none;
    }

    .subsidiary-info {
        grid-template-columns: 1fr;
    }

    .subsidiary-logo {
        padding: 40px;
    }

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

    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-brand {
        text-align: center;
    }

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

@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }

    .nav-container {
        padding: 0 16px;
    }

    .section {
        padding: 60px 0;
    }

    .hero-stats {
        gap: 12px;
    }

    .stat-item {
        padding: 12px 14px;
        min-width: 80px;
    }

    .stat-number {
        font-size: 24px;
    }

    .about-timeline {
        padding: 30px 20px;
    }

    .timeline {
        flex-direction: column;
        gap: 40px;
    }

    .strategy-timeline {
        flex-direction: column;
    }

    .position-item {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }

    .position-meta {
        justify-content: center;
    }

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

    .philosophy-quote {
        padding: 30px 20px;
    }

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

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

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

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

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

    .business-strategy {
        padding: 30px 20px;
    }

    .contact-content {
        gap: 30px;
    }

    .hero-title {
        font-size: clamp(36px, 10vw, 56px);
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0 12px;
        height: 60px;
    }

    .container {
        padding: 0 12px;
    }

    .section {
        padding: 40px 0;
    }

    .hero-actions {
        flex-direction: column;
        width: 100%;
        padding: 0 20px;
    }

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

    .hero-subtitle {
        letter-spacing: 4px;
    }

    .hero-tagline {
        font-size: 18px;
    }

    .subsidiary-details {
        padding: 30px 20px;
    }

    .subsidiary-details h3 {
        font-size: 24px;
    }

    .contact-form-wrapper {
        padding: 25px;
    }

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

    .section-title {
        font-size: clamp(24px, 8vw, 36px);
    }

    .about-card {
        padding: 25px 20px;
    }

    .value-card {
        padding: 25px 20px;
    }

    .philosophy-card {
        padding: 25px 20px;
    }

    .research-card {
        padding: 25px 20px;
    }

    .about-timeline {
        padding: 25px 15px;
    }

    .timeline-item {
        min-width: auto;
    }
}

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

.animate-fadeInUp {
    animation: fadeInUp 0.6s ease forwards;
}

/* 滚动条美化 */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}