/* ==========================================
   重置和基础样式
   ========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 颜色变量 */
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #64748b;
    --accent-color: #0ea5e9;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-dark: #0f172a;
    --border-color: #e2e8f0;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    
    /* 字体 */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Outfit', 'Inter', sans-serif;
    
    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* 阴影 */
    --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);
    
    /* 圆角 */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* 过渡 */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

html {
    scroll-behavior: smooth;
}

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

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

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

ul, ol {
    list-style: none;
}

/* ==========================================
   容器
   ========================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ==========================================
   按钮样式
   ========================================== */
.btn-primary,
.btn-secondary,
.btn-hero,
.btn-text {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 0.95rem;
    text-align: center;
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
    font-family: var(--font-primary);
}

.btn-primary {
    background: linear-gradient(135deg, #DD4F78, #DD4F78);
    color: white;
    box-shadow: 0 4px 12px rgba(221, 79, 120, 0.3);
    font-weight: 600;
    width: 176px;
    height: 55px;
    border-radius: 30px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(221, 79, 120, 0.4);
    background: linear-gradient(135deg, #DD4F78, #DD4F78);
}

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

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}


.btn-text {
    background: transparent;
    color: var(--primary-color);
    padding: 0.75rem 2rem;
    font-weight: 600;
    position: relative;
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.btn-text:hover {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
}

.btn-text::after {
    content: ' →';
    transition: transform var(--transition-base);
    display: inline-block;
    margin-left: 0.5rem;
}

.btn-text:hover::after {
    transform: translateX(4px);
}

/* ==========================================
   导航栏
   ========================================== */
.header {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: transparent;
    backdrop-filter: none;
    border-bottom: none;
    box-shadow: none;
    transition: all 0.3s ease;
    height: 124px;
    display: flex;
    align-items: center;
}

.header.scrolled {
    position: fixed;
    background: rgba(30, 63, 133, 0.68);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding: 0 2rem;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
    height: 100%;
}

.logo {
    margin-right: 40px;
}

.logo img {
    width: 155px;
    height: 63px;
    object-fit: contain;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
    flex: 0 0 auto;
    justify-content: flex-start;
}

.nav-container > .btn-primary {
    margin-left: auto;
    margin-right: 50px;
}

.nav-menu a {
    color: white;
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    padding: 0.5rem 0;
    transition: color 0.3s ease;
}

.header.scrolled .nav-menu a {
    color: white;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: #DD4F78;
}

.header.scrolled .nav-menu a:hover,
.header.scrolled .nav-menu a.active {
    color: #DD4F78;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: #DD4F78;
    transition: width var(--transition-base);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

.header.scrolled .nav-menu a::after {
    background: #DD4F78;
}

/* 下拉菜单 */
.dropdown {
    position: relative;
}

.dropdown-toggle::after {
    content: ' ▼';
    font-size: 0.7rem;
    margin-left: 0.3rem;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: rgba(30, 63, 133, 0.68);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-md);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    min-width: 220px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-base);
    margin-top: 1rem;
    padding: 0.75rem 0;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.header.scrolled .dropdown-menu {
    background: rgba(30, 63, 133, 0.68);
}

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

.dropdown-menu li {
    padding: 0;
}

.dropdown-menu a {
    display: block;
    padding: 0.75rem 1.5rem;
    color: #ffffff;
    transition: all var(--transition-fast);
    font-size: 0.9375rem;
}

.dropdown-menu a:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #DD4F78;
    padding-left: 1.75rem;
}

.dropdown-menu a::after {
    display: none;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.75rem;
    cursor: pointer;
    color: white;
    padding: 0.5rem;
    transition: all var(--transition-base);
}

.mobile-menu-toggle:hover {
    transform: scale(1.1);
}

.header.scrolled .mobile-menu-toggle {
    color: white;
}

/* ==========================================
   英雄区域
   ========================================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 800px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 5;
    pointer-events: none;
}

.hero-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    z-index: 0;
}

.hero-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    color: white;
    max-width: 900px;
    padding: var(--spacing-lg);
    margin-top: 124px;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 80px;
    font-weight: 700;
    margin-bottom: 1.5rem;
    letter-spacing: -0.01em;
    line-height: 1.2;
    text-shadow: 0 3px 12px rgba(0, 0, 0, 0.8), 0 1px 4px rgba(0, 0, 0, 0.6);
}

.hero-subtitle-main {
    font-family: var(--font-heading);
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
    line-height: 1.3;
    text-shadow: 0 3px 10px rgba(0, 0, 0, 0.8), 0 1px 4px rgba(0, 0, 0, 0.6);
    color: white;
}

.hero-subtitle-secondary {
    font-family: var(--font-heading);
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 2rem;
    letter-spacing: 0.02em;
    line-height: 1.3;
    text-shadow: 0 3px 10px rgba(0, 0, 0, 0.8), 0 1px 4px rgba(0, 0, 0, 0.6);
    color: #DD4F78;
}

.hero-description {
    font-size: 16px;
    line-height: 1.6;
    margin-bottom: 2.5rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    color: #ffffff;
    font-weight: 400;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.8), 0 1px 3px rgba(0, 0, 0, 0.6);
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    align-items: center;
    margin-bottom: 2rem;
}

.btn-hero-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 176px;
    height: 55px;
    padding: 0;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.8);
    border-radius: 30px;
    font-size: 1rem;
    font-weight: 600;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
    transition: all 0.25s ease;
    text-decoration: none;
}

.btn-hero-secondary:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: white;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.btn-hero-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 176px;
    height: 55px;
    padding: 0;
    background: #1e4a8f;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 30px;
    font-size: 1rem;
    font-weight: 600;
    box-shadow: 0 4px 16px rgba(30, 74, 143, 0.4);
    transition: all 0.25s ease;
    text-decoration: none;
}

.btn-hero-primary:hover {
    background: #1a3d7a;
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(30, 74, 143, 0.5);
}

.hero-rating-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1.5rem;
}

.hero-rating {
    font-size: 18px;
    color: #fbbf24;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.8), 0 1px 3px rgba(0, 0, 0, 0.6);
    margin: 0;
}

.hero-badge {
    display: inline-block;
    padding: 0;
    background: transparent;
    font-size: 16px;
    margin: 0;
    border: none;
    font-weight: 500;
    letter-spacing: 0.3px;
    color: rgba(255, 255, 255, 0.9);
    text-shadow: 0 2px 6px rgba(0, 0, 0, 0.8), 0 1px 3px rgba(0, 0, 0, 0.6);
}

/* ==========================================
   通用区块样式
   ========================================== */
.section {
    padding: 5rem 0;
    position: relative;
    z-index: 10;
    background: white;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    letter-spacing: -0.01em;
    line-height: 1.3;
}

.section-subtitle {
    font-size: 1.375rem;
    color: var(--text-secondary);
    font-weight: 600;
    margin-bottom: 2rem;
    line-height: 1.4;
}

.section-subtitle-text {
    font-size: 1.0625rem;
    color: var(--text-secondary);
    max-width: 850px;
    margin: 0 auto 2.5rem;
    line-height: 1.75;
    font-weight: 400;
}

.section-subtitle-stars {
    font-size: 1.5rem;
    color: #fbbf24;
    margin-bottom: 2.5rem;
}

/* ==========================================
   网格布局
   ========================================== */
.two-column-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
    margin-bottom: 3rem;
    justify-items: center;
}

.three-column-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

/* ==========================================
   双轮驱动区域
   ========================================== */
.dual-drive {
    min-height: 687px;
    display: grid;
    background: linear-gradient(to bottom, #d4dce8 0%, #e8eef5 100%) !important;
    position: relative;
    padding: 0 16px;
    box-sizing: border-box;
    z-index: 15;
}

.dual-drive::before {
    display: none;
}

.dual-drive .container {
    position: relative;
    z-index: 1;
    max-width: 1224px;
    width: 100%;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 56px 16px 44px;
}

.dual-drive .two-column-grid {
    display: flex;
    flex-direction: row;
    gap: 12px;
    justify-content: center;
    align-items: flex-start;
    width: 100%;
    max-width: 1224px;
    margin: 0 auto;
}

.intro-text-block {
    background: transparent;
    padding: 0;
    margin-bottom: 48px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.intro-text-title {
    font-family: 'Outfit', sans-serif;
    font-size: 40px;
    font-weight: 600;
    color: #1d1e20;
    margin-bottom: 26px;
    line-height: 1.3;
    text-shadow: none;
    max-width: 600px;
}

.intro-text-description {
    font-family: 'Inter', sans-serif;
    font-size: 16px;
    line-height: 1.5;
    color: #36344d;
    font-weight: 400;
    text-shadow: none;
    max-width: 600px;
}

.feature-card {
    background: transparent;
    border-radius: 1.5rem;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    transition: all var(--transition-base);
    position: relative;
    width: 606px;
    max-width: 100%;
    flex-shrink: 0;
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

.card-image {
    width: 100%;
    height: 334px;
    overflow: hidden;
    background: linear-gradient(135deg, #4a6b8a 0%, #6d8aa8 100%);
    position: relative;
}

.card-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: #00000094;
    z-index: 1;
}

.feature-card:nth-child(2) .card-image::before {
    background: #000000A8;
}

.card-image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2;
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    color: white;
    gap: 2rem;
}

.card-image-title {
    font-family: 'Outfit', sans-serif;
    font-size: 32px;
    font-weight: 600;
    color: white;
    line-height: 1.3;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    text-align: center;
    width: 100%;
    margin: 0;
}

.card-image-text {
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.95);
    font-weight: 400;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
    text-align: center;
    width: 100%;
    display: block;
    padding: 0 1rem;
    margin: 0;
}

.card-image-text .highlight {
    color: #DD4F78;
    font-weight: 600;
}

.dual-drive-link {
    color: #DD4F78;
    text-decoration: none;
    border-bottom: 1px solid #DD4F78;
    padding-bottom: 0;
    transition: all 0.3s ease;
    font-weight: 600;
}

.dual-drive-link:hover {
    color: #ff4a6e;
    border-bottom-color: #ff4a6e;
}

.btn-card-image {
    display: inline-block;
    padding: 16px 40px;
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.8);
    border-radius: 999px;
    font-family: 'Inter', sans-serif;
    font-size: 16px;
    font-weight: 400;
    transition: all 0.2s ease;
    text-align: center;
    line-height: normal;
    align-self: center;
}

.btn-card-image:hover {
    background: rgb(29, 30, 32);
    border-color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
    opacity: 0.6;
    position: relative;
    z-index: 0;
    filter: brightness(0.8);
}

.feature-card:hover .card-image img {
    transform: scale(1.05);
    opacity: 0.7;
    filter: brightness(0.85);
}

.card-content {
    padding: 2.5rem 2.5rem 3rem;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: relative;
    z-index: 2;
    display: none;
}

.card-title {
    font-size: 1.375rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    color: #1e293b;
    line-height: 1.3;
}

.card-text {
    font-size: 0.9375rem;
    line-height: 1.8;
    color: #475569;
    margin-bottom: 2rem;
    font-weight: 400;
}

/* ==========================================
   平台优势对比
   ========================================== */
.platform-advantages {
    position: relative;
    height: 790px;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: transparent !important;
    z-index: 10;
}

.platform-advantages-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    clip-path: inset(0);
}

.platform-advantages-background::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    z-index: -1;
}

.platform-advantages-video {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    object-fit: cover;
    object-position: center;
}

.platform-advantages-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: transparent;
    backdrop-filter: none;
}

.platform-advantages::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.65);
    z-index: 1;
    pointer-events: none;
}

.platform-advantages .container {
    position: relative;
    z-index: 2;
    max-width: 1240px;
}

.platform-advantages-title {
    color: #ffffff !important;
    text-align: center;
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 3.5rem;
    text-shadow: 0 3px 12px rgba(0, 0, 0, 0.9), 0 1px 4px rgba(0, 0, 0, 0.7);
    line-height: 1.35;
    padding: 0 2rem;
}

.comparison-grid-new {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 60px 100px;
    margin-bottom: 60px;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.comparison-item-new {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    align-items: center;
    text-align: center;
    max-width: 286px;
    margin: 0 auto;
}

.comparison-item-title {
    font-size: 13px;
    line-height: 1.5;
    font-weight: 700;
    color: #ffffff;
    margin: 0;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.5);
    max-width: 100%;
    font-family: 'Outfit', sans-serif;
}

.comparison-item-text {
    font-size: 13px;
    line-height: 1.5;
    font-weight: 400;
    margin: 0;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.5);
    color: #DD4F78;
    max-width: 100%;
    font-family: 'Outfit', sans-serif;
}

.highlight-text {
    color: #DD4F78;
    font-weight: 400;
}

.platform-advantages-button-wrapper {
    text-align: center;
    margin: 0 0 2rem;
}

.btn-platform-advantages-new {
    display: inline-block;
    padding: 0.875rem 2.5rem;
    background: linear-gradient(135deg, #DD4F78, #DD4F78);
    color: white;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    box-shadow: 0 4px 16px rgba(221, 79, 120, 0.4);
    transition: all 0.25s ease;
    text-decoration: none;
}

.btn-platform-advantages-new:hover {
    background: linear-gradient(135deg, #DD4F78, #DD4F78);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(221, 79, 120, 0.5);
}

.architecture-diagram {
    margin-top: 3.5rem;
    text-align: center;
    padding: 0 1rem;
}

.architecture-diagram-image {
    width: 1018px;
    max-width: 100%;
    height: auto;
    margin: 0 auto 1.5rem;
    border-radius: 0.75rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
    border: 2px solid rgba(255, 255, 255, 0.3);
    display: block;
}

.architecture-diagram-caption {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.85);
    font-style: italic;
    text-shadow: 0 2px 6px rgba(0, 0, 0, 0.8), 0 1px 3px rgba(0, 0, 0, 0.6);
    margin: 0;
    line-height: 1.5;
}

/* ==========================================
   产品版本
   ========================================== */
.product-versions {
    background: linear-gradient(to bottom, #d4dce8 0%, #e8eef5 100%) !important;
    padding: 4.5rem 0 5rem !important;
    position: relative;
    z-index: 15;
}

.product-versions .container {
    max-width: 1280px;
}

.product-versions-title {
    color: #1e293b;
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 3rem;
    line-height: 1.35;
}

.product-versions-grid {
    display: flex;
    flex-direction: row;
    gap: 12px;
    justify-content: center;
    align-items: flex-start;
    width: 100%;
    max-width: 1224px;
    margin: 0 auto;
}

.product-version-card {
    position: relative;
    width: 606px;
    height: 347px;
    max-width: 100%;
    flex-shrink: 0;
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    transition: all 0.2s ease;
}

.product-version-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
}

.product-version-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.product-version-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.product-version-card:nth-child(2) .product-version-bg img {
    transform: scale(1.3);
    object-position: 65% center;
}

.product-version-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.5) 0%, rgba(0, 0, 0, 0.4) 100%);
    z-index: 1;
}

.product-version-content {
    position: relative;
    z-index: 2;
    height: 100%;
    padding: 2.25rem 2.25rem 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    color: white;
}

.product-version-title {
    font-family: 'Outfit', sans-serif;
    font-size: 26px;
    font-weight: 600;
    color: white;
    margin-bottom: 1.5rem;
    line-height: 1.3;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.8), 0 1px 4px rgba(0, 0, 0, 0.6);
}

.product-version-list {
    list-style: none;
    padding-left: 0;
    margin-bottom: 1.75rem;
    flex-grow: 1;
}

.product-version-list li {
    font-family: 'Inter', sans-serif;
    font-size: 16px;
    line-height: 1.5;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 0.75rem;
    padding-left: 1.25rem;
    position: relative;
    font-weight: 400;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.6);
}

.product-version-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 700;
    font-size: 1.1rem;
}

.btn-product-version {
    display: inline-block;
    align-self: flex-start;
    padding: 16px 40px;
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.8);
    border-radius: 999px;
    font-family: 'Inter', sans-serif;
    font-size: 16px;
    font-weight: 400;
    text-decoration: none;
    transition: all 0.2s ease;
    text-align: center;
    line-height: normal;
}

.btn-product-version:hover {
    background: rgb(29, 30, 32);
    border-color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* ==========================================
   客户评价
   ========================================== */
/* Styles moved to index-updates.css for better organization */

/* ==========================================
   垂类AI应用
   ========================================== */
/* Styles moved to index-updates.css for better organization */
.vertical-ai {
    position: relative;
    z-index: 15;
}

.vertical-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.vertical-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.vertical-image {
    width: 100%;
    height: 240px;
    overflow: hidden;
    background: var(--bg-secondary);
}

.vertical-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.vertical-card:hover .vertical-image img {
    transform: scale(1.05);
}

.vertical-content {
    padding: 1.5rem 1.75rem 2rem;
}

.vertical-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
    line-height: 1.4;
}

.vertical-text {
    font-size: 0.9375rem;
    line-height: 1.65;
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
    font-weight: 400;
}

/* ==========================================
   合作伙伴
   ========================================== */
/* Styles moved to index-updates.css for better organization */
.partnership {
    position: relative;
    overflow: hidden;
    background: transparent !important;
    z-index: 10;
}

/* ==========================================
   FAQ
   ========================================== */
/* Styles moved to index-updates.css for better organization */
.faq {
    position: relative;
    z-index: 15;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-bottom: 2.5rem;
}

/* FAQ简化样式（无容器） */
.faq-simple-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem 3rem;
    margin-bottom: 3rem;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.faq-simple-item {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.faq-simple-question {
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.4;
}

.faq-simple-answer {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--text-secondary);
}

/* ==========================================
   页脚
   ========================================== */
.footer {
    background: linear-gradient(to bottom, #2d3e5f 0%, #0f172a 100%);
    color: white;
    padding: 0;
    position: relative;
    z-index: 15;
    min-height: 466px;
}

.footer .container {
    max-width: 1240px;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.footer-main {
    display: flex;
    gap: 4rem;
    padding: 2.5rem 0 2rem 0;
    flex: 1;
}

/* 左侧：联系我们 + 支持伙伴 */
.footer-left {
    flex: 1;
    max-width: 400px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.footer-contact-section {
    display: flex;
    flex-direction: column;
}

.footer-contact-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    line-height: 1.3;
    color: #FFFFFF;
}

.footer-contact-text {
    font-size: 0.875rem;
    color: #FFFFFF;
    margin-bottom: 1rem;
    line-height: 1.5;
}

.footer-qr-contact-row {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    position: relative;
}

.footer-qr-wrapper {
    flex-shrink: 0;
    position: relative;
}

.footer-qr-image {
    width: 140px;
    height: 140px;
    object-fit: contain;
    margin-bottom: 0.375rem;
    background: white;
    padding: 0.25rem;
    border-radius: 4px;
}

.footer-qr-label {
    font-size: 0.75rem;
    color: #FFFFFF;
    margin: 0;
    text-align: center;
}

.footer-contact-info {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    justify-content: center;
    position: absolute;
    left: 155px;
    top: 50%;
    transform: translateY(-50%);
}

.footer-contact-link {
    font-size: 16px;
    color: #FFFFFF;
    margin: 0;
}

.footer-partners-section {
    padding-top: 1rem;
}

.footer-partners-title {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #FFFFFF;
}

.footer-partners-logos {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    flex-wrap: nowrap;
}

.footer-partners-logos img {
    height: 45px;
    width: auto;
    max-width: 150px;
    object-fit: contain;
    opacity: 1;
    transition: opacity var(--transition-base);
    filter: none;
}

.footer-partners-logos img:hover {
    opacity: 0.8;
}

/* 右侧：三列导航 */
.footer-right {
    flex: 2;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    align-items: start;
}

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

.footer-column-title {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #FFFFFF;
    line-height: 1.4;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 0.625rem;
}

.footer-links a {
    color: #FFFFFF;
    font-size: 0.875rem;
    transition: color var(--transition-base);
    line-height: 1.5;
    text-decoration: none;
    display: block;
}

.footer-links a:hover {
    color: #FFFFFF;
    opacity: 0.8;
}

.footer-bottom {
    text-align: center;
    padding: 1rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: auto;
}

.footer-bottom p {
    font-size: 0.875rem;
    color: #FFFFFF;
    margin: 0;
    line-height: 1.4;
}

/* ==========================================
   响应式设计
   ========================================== */
@media (max-width: 1024px) {
    .nav-menu {
        gap: 1.5rem;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .two-column-grid,
    .faq-grid,
    .faq-simple-grid {
        grid-template-columns: 1fr;
    }
    
    .three-column-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* 双轮驱动板块 - 平板响应式 */
    .dual-drive {
        min-height: auto;
    }
    
    .dual-drive .container {
        padding: 40px 16px;
    }
    
    .dual-drive .two-column-grid {
        flex-direction: column;
        gap: 2rem;
        align-items: center;
    }
    
    .intro-text-block {
        margin-bottom: 2.5rem;
    }
    
    .intro-text-title {
        font-size: 36px;
    }
    
    .intro-text-description {
        font-size: 16px;
    }
    
    .feature-card {
        width: 100%;
        max-width: 606px;
    }
    
    .product-versions-grid {
        flex-direction: column;
        gap: 1.5rem;
        align-items: center;
    }
    
    .product-version-card {
        width: 100%;
        max-width: 606px;
        height: 347px;
    }
    
    /* 页脚响应式 */
    .footer {
        height: auto;
        min-height: 466px;
    }
    
    .footer-main {
        flex-direction: column;
        gap: 2.5rem;
        padding: 2.5rem 0 2rem 0;
    }
    
    .footer-left {
        max-width: 100%;
    }
    
    .footer-right {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .header {
        height: auto;
        min-height: 80px;
        background: rgba(30, 63, 133, 0.95);
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: 1.5rem;
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
        gap: 0;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-menu li {
        width: 100%;
        border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    }
    
    .nav-menu a {
        display: block;
        padding: 1rem 0;
        color: var(--text-primary) !important;
    }
    
    .dropdown-menu {
        position: static;
        box-shadow: none;
        background: var(--bg-secondary);
        margin-top: 0;
        display: none;
        border: none;
    }
    
    .dropdown-menu.active {
        display: block;
    }
    
    .btn-primary {
        display: none;
    }
    
    .logo img {
        width: 120px;
        height: 48px;
    }
    
    .hero {
        height: auto;
        min-height: 700px;
        padding: 4rem 0;
    }
    
    .hero-title {
        font-size: 2.25rem;
    }
    
    .hero-subtitle-main {
        font-size: 1.5rem;
    }
    
    .hero-subtitle-secondary {
        font-size: 1.375rem;
    }
    
    .hero-description {
        font-size: 0.9375rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 1rem;
    }
    
    .btn-hero-secondary,
    .btn-hero-primary {
        padding: 0.75rem 2rem;
        font-size: 0.9375rem;
    }
    
    .section {
        padding: 3.5rem 0;
    }
    
    .section-title {
        font-size: 1.875rem;
    }
    
    .container {
        padding: 0 1.5rem;
    }
    
    .three-column-grid {
        grid-template-columns: 1fr;
    }
    
    .comparison-grid-new {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px 60px;
    }
    
    .platform-advantages-title {
        font-size: 1.75rem;
    }
    
    .architecture-diagram-image {
        width: 100%;
    }
    
    /* 双轮驱动板块 - 移动端响应式 */
    .dual-drive {
        min-height: auto;
        padding: 0 16px;
    }
    
    .dual-drive .container {
        padding: 30px 0;
    }
    
    .dual-drive .two-column-grid {
        flex-direction: column;
        gap: 2rem;
        align-items: center;
    }
    
    .intro-text-block {
        margin-bottom: 2rem;
        padding: 0 1rem;
    }
    
    .intro-text-title {
        font-size: 32px;
    }
    
    .intro-text-description {
        font-size: 16px;
        line-height: 1.7;
    }
    
    .feature-card {
        width: 100%;
        max-width: 100%;
    }
    
    .card-image {
        height: 280px;
    }
    
    .card-image-overlay {
        padding: 2rem;
        gap: 1.5rem;
    }
    
    .card-image-title {
        font-size: 20px;
    }
    
    .product-versions-title {
        font-size: 1.75rem;
    }
    
    .product-version-card {
        width: 100%;
        height: auto;
        min-height: 320px;
    }
    
    .product-version-content {
        padding: 2rem 2rem 2.25rem;
    }
    
    .product-version-title {
        font-size: 20px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
    
    /* 移动端背景图片固定效果替代方案 */
    .testimonials::before {
        background-attachment: scroll;
    }
    
    /* 页脚移动端响应式 */
    .footer {
        height: auto;
        min-height: auto;
    }
    
    .footer-main {
        padding: 2rem 0 1.5rem 0;
    }
    
    .footer-right {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-qr-contact-row {
        flex-direction: column;
        gap: 1rem;
    }
    
    .footer-qr-image {
        width: 120px;
        height: 120px;
    }
    
    .footer-partners-section {
        padding-top: 1.5rem;
    }
    
    .footer-partners-logos {
        gap: 1rem;
        flex-wrap: wrap;
    }
    
    .footer-partners-logos img {
        height: 35px;
        max-width: 120px;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-3xl: 2.5rem;
        --spacing-2xl: 1.5rem;
    }
    
    .hero-title {
        font-size: 1.875rem;
    }
    
    .hero-subtitle-main {
        font-size: 1.25rem;
    }
    
    .hero-subtitle-secondary {
        font-size: 1.125rem;
        margin-bottom: 1.5rem;
    }
    
    .hero-description {
        font-size: 0.875rem;
        margin-bottom: 2rem;
    }
    
    .hero-buttons {
        gap: 0.875rem;
    }
    
    .btn-hero-secondary,
    .btn-hero-primary {
        padding: 0.65rem 1.75rem;
        font-size: 0.875rem;
    }
    
    .section {
        padding: 2.5rem 0;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    
    .container {
        padding: 0 1rem;
    }
    
    
    .card-content,
    .version-content {
        padding: 1.5rem 1.5rem 2rem;
    }
    
    .platform-advantages-title {
        font-size: 1.5rem;
        padding: 0 1rem;
    }
    
    .comparison-grid-new {
        grid-template-columns: 1fr;
        gap: 30px;
        margin-bottom: 40px;
    }
    
    .comparison-item-title,
    .comparison-item-text {
        font-size: 0.875rem;
        line-height: 1.6;
    }
    
    .btn-platform-advantages-new {
        padding: 0.75rem 2rem;
        font-size: 0.9375rem;
    }
    
    .architecture-diagram {
        margin-top: 2.5rem;
        padding: 0 0.5rem;
    }
    
    .btn-platform-advantages {
        padding: 0.75rem 2rem;
        font-size: 0.9375rem;
    }
    
    /* 双轮驱动板块 - 小屏幕手机响应式 */
    .intro-text-block {
        margin-bottom: 1.5rem;
    }
    
    .intro-text-title {
        font-size: 24px;
        margin-bottom: 1rem;
    }
    
    .intro-text-description {
        font-size: 14px;
        line-height: 1.65;
    }
    
    .feature-card {
        width: 100%;
    }
    
    .card-image {
        height: 240px;
    }
    
    .card-image-overlay {
        padding: 1.5rem;
        gap: 1.25rem;
    }
    
    .card-image-title {
        font-size: 18px;
    }
    
    .card-image-text {
        font-size: 14px;
    }
    
    .btn-card-image {
        padding: 14px 36px;
        font-size: 14px;
    }
    
    .product-versions-title {
        font-size: 1.5rem;
    }
    
    .product-version-card {
        width: 100%;
        height: auto;
        min-height: 300px;
    }
    
    .product-version-content {
        padding: 1.75rem 1.5rem 2rem;
    }
    
    .product-version-title {
        font-size: 18px;
        margin-bottom: 1.25rem;
    }
    
    .product-version-list {
        margin-bottom: 1.5rem;
    }
    
    .product-version-list li {
        font-size: 14px;
        line-height: 1.5;
        margin-bottom: 0.65rem;
    }
    
    .btn-product-version {
        padding: 14px 36px;
        font-size: 14px;
    }
    
    /* 页脚小屏幕响应式 */
    .footer-contact-title {
        font-size: 1.25rem;
    }
    
    .footer-contact-text {
        font-size: 0.8125rem;
    }
    
    .footer-qr-contact-row {
        flex-direction: column;
    }
    
    .footer-qr-image {
        width: 100px;
        height: 100px;
    }
    
    .footer-partners-logos {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .footer-partners-logos img {
        height: 30px;
        max-width: 100px;
    }
}

/* ==========================================
   动画效果
   ========================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease forwards;
}

/* 平滑滚动 */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ==========================================
   产品文档页面样式
   ========================================== */

/* 固定导航栏样式 */
.header-solid {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

/* 页面标题区域 */
.page-header {
    padding: 140px 0 60px;
    background: #c5cdd8;
    text-align: center;
}

.page-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.3;
}

/* 文档区域 */
.product-docs {
    padding: 80px 0 100px;
    background: #c5cdd8;
}

/* 文档网格 */
.docs-grid {
    display: grid;
    grid-template-columns: repeat(3, 401px);
    gap: 2rem;
    max-width: 1300px;
    margin: 0 auto;
    justify-content: center;
}

/* 文档卡片 */
.doc-card {
    position: relative;
    width: 401px;
    height: 248px;
    border-radius: var(--radius-xl);
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-base);
}

.doc-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

/* 背景图片 */
.doc-card-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.doc-card:hover .doc-card-bg {
    transform: scale(1.05);
}

/* 文本覆盖层 */
.doc-card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(2px);
    z-index: 1;
}

.doc-card-title {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    color: white;
    margin: 0 0 1rem 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.doc-card-description {
    font-size: 0.9375rem;
    line-height: 1.5;
    color: white;
    margin: 0 0 1.5rem 0;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    max-width: 90%;
}

.btn-doc-card {
    display: inline-block;
    padding: 0.75rem 2rem;
    background: rgba(255, 255, 255, 0.15);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.8);
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    transition: all var(--transition-base);
    cursor: pointer;
    backdrop-filter: blur(10px);
}

.btn-doc-card:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: white;
    transform: translateY(-2px);
}

/* 平板响应式 */
@media (max-width: 1280px) {
    .docs-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.5rem;
        padding: 0 1.5rem;
    }

    .doc-card {
        width: 100%;
        height: auto;
        aspect-ratio: 401 / 248;
    }
}

@media (max-width: 968px) {
    .page-header {
        padding: 120px 0 50px;
    }

    .page-title {
        font-size: 2rem;
        padding: 0 1rem;
    }

    .product-docs {
        padding: 60px 0 80px;
    }

    .docs-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 0 1rem;
    }

    .doc-card {
        width: 100%;
        height: auto;
        aspect-ratio: 401 / 248;
    }

    .doc-card-title {
        font-size: 1.5rem;
    }

    .doc-card-description {
        font-size: 0.875rem;
    }

    .btn-doc-card {
        padding: 0.625rem 1.5rem;
        font-size: 0.9375rem;
    }
}

/* 手机响应式 */
@media (max-width: 640px) {
    .page-header {
        padding: 100px 0 40px;
    }

    .page-title {
        font-size: 1.5rem;
        line-height: 1.4;
    }

    .product-docs {
        padding: 50px 0 60px;
    }

    .docs-grid {
        gap: 1.5rem;
    }

    .doc-card {
        width: 100%;
        height: auto;
        aspect-ratio: 401 / 248;
    }

    .doc-card-overlay {
        padding: 1.5rem;
    }

    .doc-card-title {
        font-size: 1.25rem;
        margin-bottom: 0.75rem;
    }

    .doc-card-description {
        font-size: 0.8125rem;
        margin-bottom: 1rem;
        line-height: 1.4;
    }

    .btn-doc-card {
        padding: 0.625rem 1.25rem;
        font-size: 0.875rem;
    }
}

/* ==========================================
   联系我们页面样式
   ========================================== */

/* 联系我们英雄区域 */
.hero-contact {
    min-height: 808px;
    display: flex;
    flex-direction: column;
}

.hero-content-contact {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 120px 2rem 80px;
    gap: 3rem;
}

.contact-hero-title {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    color: white;
    text-align: center;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    margin: 0;
}

/* 视频背景内的联系卡片 */
.contact-cards-hero {
    display: grid;
    grid-template-columns: repeat(2, 459px);
    gap: 2.5rem;
    max-width: 1200px;
}

.contact-card-hero {
    position: relative;
    width: 459px;
    height: 259px;
    border-radius: var(--radius-xl);
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-xl);
}

.contact-card-hero:hover {
    transform: translateY(-8px);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
}

.contact-card-hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.contact-card-hero:hover .contact-card-hero-bg {
    transform: scale(1.05);
}

.contact-card-hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(2px);
    z-index: 1;
}

.contact-card-hero-title {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    color: white;
    margin: 0 0 1rem 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.contact-card-hero-text {
    font-size: 1rem;
    line-height: 1.6;
    color: white;
    margin: 0 0 1.5rem 0;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.btn-contact-card-hero {
    display: inline-block;
    padding: 0.875rem 2.5rem;
    background: transparent;
    color: white;
    border: 2px solid white;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    transition: all var(--transition-base);
}

.btn-contact-card-hero:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

/* 移除旧的联系卡片样式 */

/* 生态合作伙伴区域 */
.partnership-section {
    padding: 0;
    background: #c5cdd8;
    height: 455px;
}

.partnership-section .container {
    padding: 0;
    max-width: 100%;
    height: 100%;
}

.partnership-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    height: 100%;
    align-items: stretch;
}

.partnership-left {
    display: flex;
    flex-direction: column;
    padding: 60px 80px;
    height: 100%;
    justify-content: center;
}

.partnership-section-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 1.5rem 0;
    text-align: left;
}

.partnership-section-subtitle {
    font-size: 1.0625rem;
    line-height: 1.7;
    color: var(--text-secondary);
    margin: 0 0 2.5rem 0;
    max-width: 600px;
}

.partnership-buttons {
    display: flex;
    flex-direction: row;
    gap: 1.25rem;
}

.btn-partnership {
    display: inline-block;
    width: 194px;
    height: 50px;
    padding: 0;
    background: #1e3a8a;
    color: white;
    border-radius: 25px;
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    line-height: 50px;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
}

.btn-partnership:hover {
    background: #1e40af;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.partnership-right {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    padding: 40px;
}

.partnership-image {
    width: 100%;
    height: 100%;
    max-height: 375px;
    object-fit: cover;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

/* 平板响应式 */
@media (max-width: 968px) {
    .hero-contact {
        min-height: 600px;
    }

    .contact-hero-title {
        font-size: 2.25rem;
        padding: 0 2rem;
    }

    .contact-cards-hero {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .contact-card-hero {
        width: 100%;
        max-width: 459px;
        height: auto;
        aspect-ratio: 459 / 259;
    }

    .partnership-section {
        min-height: auto;
    }

    .partnership-content {
        grid-template-columns: 1fr;
        height: auto;
    }

    .partnership-left {
        padding: 50px 40px;
    }

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

    .partnership-buttons {
        flex-wrap: wrap;
    }

    .partnership-right {
        padding: 0;
        height: 300px;
    }

    .partnership-image {
        max-height: 300px;
        border-radius: 0;
    }
}

/* 手机响应式 */
@media (max-width: 640px) {
    .hero-contact {
        min-height: 500px;
    }

    .contact-hero-title {
        font-size: 1.75rem;
        padding: 0 1.5rem;
    }

    .hero-content-contact {
        gap: 2rem;
        padding: 100px 1rem 60px;
    }

    .contact-cards-hero {
        gap: 1.5rem;
    }

    .contact-card-hero {
        width: 100%;
        aspect-ratio: 459 / 259;
    }

    .contact-card-hero-overlay {
        padding: 1.5rem;
    }

    .contact-card-hero-title {
        font-size: 1.375rem;
    }

    .contact-card-hero-text {
        font-size: 0.9375rem;
        margin-bottom: 1.25rem;
    }

    .btn-contact-card-hero {
        padding: 0.75rem 2rem;
        font-size: 0.9375rem;
    }

    .partnership-left {
        padding: 40px 20px;
    }

    .partnership-section-title {
        font-size: 1.5rem;
        margin-bottom: 0.75rem;
    }

    .partnership-section-subtitle {
        font-size: 1rem;
        margin-bottom: 2rem;
    }

    .partnership-buttons {
        flex-direction: column;
        gap: 1rem;
    }

    .btn-partnership {
        width: 100%;
        height: 48px;
        line-height: 48px;
    }

    .partnership-right {
        height: 250px;
    }

    .partnership-image {
        max-height: 250px;
    }
}