/* ===================================
   普赛科技 - 主样式表
   江西普赛科技有限公司
   =================================== */

/* ===== 重置与基础 ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 主色系 */
    --color-primary: #0A1E3F;
    --color-primary-light: #152C5C;
    --color-accent: #2563EB;
    --color-accent-light: #3B82F6;
    --color-cyan: #06B6D4;
    --color-cyan-light: #22D3EE;
    
    /* 中性色 */
    --color-dark: #0F172A;
    --color-gray-900: #1E293B;
    --color-gray-700: #475569;
    --color-gray-500: #94A3B8;
    --color-gray-300: #CBD5E1;
    --color-gray-100: #F1F5F9;
    --color-gray-50: #F8FAFC;
    --color-white: #FFFFFF;
    
    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, #0A1E3F 0%, #152C5C 100%);
    --gradient-accent: linear-gradient(135deg, #2563EB 0%, #06B6D4 100%);
    --gradient-hero: linear-gradient(135deg, #0A1E3F 0%, #1E3A8A 50%, #06B6D4 100%);
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 30px rgba(37, 99, 235, 0.3);
    
    /* 字体 */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --font-mono: 'Fira Code', 'Consolas', monospace;
    
    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* 布局 */
    --container-max: 1200px;
    --header-height: 72px;
}

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

body {
    font-family: var(--font-sans);
    color: var(--color-gray-900);
    background: var(--color-white);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    text-decoration: none;
    color: inherit;
}

ul, ol {
    list-style: none;
}

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

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

/* ===== 容器 ===== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

.container-narrow {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== 通用按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    transition: all var(--transition-base);
    white-space: nowrap;
    cursor: pointer;
}

.btn-primary {
    background: var(--gradient-accent);
    color: var(--color-white);
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.45);
}

.btn-outline {
    background: transparent;
    color: var(--color-white);
    border: 1.5px solid rgba(255, 255, 255, 0.4);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-white);
}

.btn-dark {
    background: var(--color-primary);
    color: var(--color-white);
}

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

.btn-light {
    background: var(--color-gray-100);
    color: var(--color-primary);
}

.btn-light:hover {
    background: var(--color-gray-300);
}

/* ===== 导航栏 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(10, 30, 63, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 1000;
    transition: all var(--transition-base);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.navbar.scrolled {
    background: rgba(10, 30, 63, 0.95);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--color-white);
    font-size: 1.25rem;
    font-weight: 700;
}

.nav-logo .logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-accent);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: white;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
}

.nav-logo .logo-icon-img {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    object-fit: cover;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
}

.nav-logo .logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.nav-logo .logo-text .name {
    font-size: 1.1rem;
    font-weight: 700;
}

.nav-logo .logo-text .sub {
    font-size: 0.7rem;
    color: var(--color-gray-500);
    letter-spacing: 1px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-menu a {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-cyan);
    transition: width var(--transition-base);
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--color-white);
}

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

.nav-cta {
    padding: 8px 22px;
    border-radius: 6px;
    background: var(--gradient-accent);
    color: var(--color-white) !important;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all var(--transition-base);
}

.nav-cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
}

.nav-cta::after {
    display: none;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-white);
    transition: all var(--transition-base);
    border-radius: 2px;
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ===== Hero 区域 ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--gradient-hero);
    overflow: hidden;
    padding-top: var(--header-height);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(37, 99, 235, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(6, 182, 212, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 50% 20%, rgba(59, 130, 246, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-grid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
}

.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--color-cyan);
    border-radius: 50%;
    opacity: 0.4;
    animation: floatParticle linear infinite;
}

@keyframes floatParticle {
    0% { transform: translateY(100vh) translateX(0); opacity: 0; }
    10% { opacity: 0.4; }
    90% { opacity: 0.4; }
    100% { transform: translateY(-100px) translateX(50px); opacity: 0; }
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(6, 182, 212, 0.15);
    border: 1px solid rgba(6, 182, 212, 0.3);
    border-radius: 20px;
    color: var(--color-cyan-light);
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease;
}

.hero-badge .dot {
    width: 8px;
    height: 8px;
    background: var(--color-cyan);
    border-radius: 50%;
    animation: pulse 2s ease infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.3); }
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--color-white);
    line-height: 1.2;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease;
}

.hero h1 .gradient-text {
    background: linear-gradient(135deg, #60A5FA, #22D3EE, #06B6D4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 36px;
    max-width: 600px;
    line-height: 1.7;
    animation: fadeInUp 1s ease;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    animation: fadeInUp 1.2s ease;
}

.hero-stats {
    position: relative;
    z-index: 2;
    display: flex;
    gap: 48px;
    margin-top: 64px;
    animation: fadeInUp 1.4s ease;
}

.hero-stat {
    text-align: left;
}

.hero-stat .number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-white);
    background: linear-gradient(135deg, #60A5FA, #22D3EE);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-stat .label {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    margin-top: 4px;
}

/* Hero 装饰图形 */
.hero-visual {
    position: absolute;
    right: -100px;
    top: 50%;
    transform: translateY(-50%);
    width: 600px;
    height: 600px;
    opacity: 0.5;
    pointer-events: none;
    z-index: 1;
}

.hero-orb {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(6, 182, 212, 0.2);
    animation: rotate 20s linear infinite;
}

.hero-orb:nth-child(1) {
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
}

.hero-orb:nth-child(2) {
    width: 75%;
    height: 75%;
    top: 12.5%;
    left: 12.5%;
    animation-direction: reverse;
    animation-duration: 15s;
}

.hero-orb:nth-child(3) {
    width: 50%;
    height: 50%;
    top: 25%;
    left: 25%;
    animation-duration: 10s;
}

.hero-orb-dot {
    position: absolute;
    width: 12px;
    height: 12px;
    background: var(--color-cyan);
    border-radius: 50%;
    top: -6px;
    left: 50%;
    transform: translateX(-50%);
    box-shadow: 0 0 20px var(--color-cyan);
}

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

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

/* ===== 通用 Section ===== */
.section {
    padding: 100px 0;
    position: relative;
}

.section-gray {
    background: var(--color-gray-50);
}

.section-dark {
    background: var(--color-primary);
    color: var(--color-white);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(37, 99, 235, 0.1);
    color: var(--color-accent);
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 20px;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}

.section-dark .section-tag {
    background: rgba(6, 182, 212, 0.15);
    color: var(--color-cyan-light);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 16px;
    line-height: 1.3;
}

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

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-gray-500);
    line-height: 1.7;
}

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

/* ===== 关于区域 ===== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h3 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 20px;
}

.about-text p {
    color: var(--color-gray-700);
    margin-bottom: 16px;
    line-height: 1.8;
}

.about-features {
    margin-top: 32px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.about-feature {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.about-feature .icon {
    width: 40px;
    height: 40px;
    background: rgba(37, 99, 235, 0.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--color-accent);
    font-size: 1.2rem;
}

.about-feature .text {
    font-size: 0.9rem;
}

.about-feature .text strong {
    display: block;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.about-feature .text span {
    color: var(--color-gray-500);
    font-size: 0.85rem;
}

.about-visual {
    position: relative;
}

.about-card {
    background: var(--gradient-primary);
    border-radius: 20px;
    padding: 40px;
    color: var(--color-white);
    box-shadow: var(--shadow-xl);
    position: relative;
    overflow: hidden;
}

.about-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -30%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.2) 0%, transparent 70%);
    border-radius: 50%;
}

.about-card .card-label {
    font-size: 0.85rem;
    color: var(--color-cyan-light);
    margin-bottom: 8px;
    position: relative;
}

.about-card .card-value {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 4px;
    position: relative;
}

.about-card .card-desc {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
    position: relative;
    margin-bottom: 32px;
}

.about-card .card-list {
    position: relative;
}

.about-card .card-list li {
    padding: 12px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    gap: 12px;
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.9rem;
}

.about-card .card-list li .check {
    color: var(--color-cyan);
    font-size: 1.1rem;
}

/* ===== 服务/产品卡片 ===== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    background: var(--color-white);
    border: 1px solid var(--color-gray-100);
    border-radius: 16px;
    padding: 36px;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

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

.service-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(6, 182, 212, 0.1));
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    transition: all var(--transition-base);
}

.service-card:hover .service-icon {
    background: var(--gradient-accent);
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3);
}

.service-icon svg {
    width: 28px;
    height: 28px;
    color: var(--color-accent);
    transition: color var(--transition-base);
}

.service-card:hover .service-icon svg {
    color: var(--color-white);
}

.service-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.service-card p {
    color: var(--color-gray-700);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 20px;
}

.service-card ul {
    margin-bottom: 24px;
}

.service-card ul li {
    padding: 6px 0;
    color: var(--color-gray-700);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.service-card ul li::before {
    content: '→';
    color: var(--color-accent);
    font-weight: 700;
}

.service-link {
    color: var(--color-accent);
    font-weight: 600;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap var(--transition-fast);
}

.service-link:hover {
    gap: 12px;
}

/* ===== 优势区域 ===== */
.advantages {
    background: var(--color-primary);
    color: var(--color-white);
    position: relative;
    overflow: hidden;
}

.advantages::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 80% 20%, rgba(6, 182, 212, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 20% 80%, rgba(37, 99, 235, 0.1) 0%, transparent 50%);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    position: relative;
    z-index: 1;
}

.advantage-item {
    text-align: center;
    padding: 32px 20px;
}

.advantage-item .num {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, #60A5FA, #22D3EE);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 12px;
    display: block;
}

.advantage-item .title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.advantage-item .desc {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
}

/* ===== 解决方案区域 ===== */
.solutions-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.solution-item {
    display: grid;
    grid-template-columns: 80px 1fr auto;
    gap: 24px;
    align-items: center;
    padding: 28px;
    background: var(--color-white);
    border: 1px solid var(--color-gray-100);
    border-radius: 16px;
    transition: all var(--transition-base);
}

.solution-item:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-lg);
    transform: translateX(8px);
}

.solution-item .sol-num {
    width: 60px;
    height: 60px;
    background: var(--color-gray-100);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-accent);
    transition: all var(--transition-base);
}

.solution-item:hover .sol-num {
    background: var(--gradient-accent);
    color: var(--color-white);
}

.solution-item .sol-content h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 6px;
}

.solution-item .sol-content p {
    color: var(--color-gray-700);
    font-size: 0.9rem;
}

.solution-item .sol-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.solution-item .sol-tag {
    padding: 4px 12px;
    background: var(--color-gray-100);
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--color-gray-700);
}

/* ===== 新闻区域 ===== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.news-card {
    background: var(--color-white);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--color-gray-100);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

.news-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-6px);
}

.news-image {
    width: 100%;
    height: 200px;
    background: var(--gradient-primary);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.news-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
    background-size: 30px 30px;
}

.news-image .news-icon {
    font-size: 3rem;
    color: rgba(255, 255, 255, 0.3);
    position: relative;
    z-index: 1;
}

.news-image .news-date {
    position: absolute;
    top: 16px;
    left: 16px;
    background: rgba(255, 255, 255, 0.9);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-primary);
    z-index: 2;
}

.news-content {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.news-content .news-category {
    font-size: 0.8rem;
    color: var(--color-accent);
    font-weight: 600;
    margin-bottom: 8px;
}

.news-content h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 12px;
    line-height: 1.5;
}

.news-content p {
    color: var(--color-gray-700);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 16px;
    flex: 1;
}

.news-content .news-more {
    color: var(--color-accent);
    font-size: 0.85rem;
    font-weight: 600;
}

/* ===== CTA 区域 ===== */
.cta-section {
    position: relative;
    padding: 80px 0;
    background: var(--gradient-primary);
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 30% 50%, rgba(6, 182, 212, 0.15) 0%, transparent 50%);
}

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

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-white);
    margin-bottom: 16px;
}

.cta-content p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 32px;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
}

/* ===== 页脚 ===== */
.footer {
    background: var(--color-dark);
    color: rgba(255, 255, 255, 0.7);
    padding: 70px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand .nav-logo {
    margin-bottom: 20px;
}

.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 20px;
    color: rgba(255, 255, 255, 0.5);
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.5);
    transition: all var(--transition-base);
    font-size: 1.1rem;
}

.footer-social a:hover {
    background: var(--color-accent);
    color: var(--color-white);
    transform: translateY(-3px);
}

.footer-col h4 {
    color: var(--color-white);
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul li a {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
    transition: color var(--transition-fast);
}

.footer-col ul li a:hover {
    color: var(--color-cyan-light);
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 16px;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
}

.footer-contact li .icon {
    color: var(--color-cyan);
    flex-shrink: 0;
    margin-top: 2px;
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.4);
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.4);
    transition: color var(--transition-fast);
}

.footer-bottom a:hover {
    color: var(--color-cyan-light);
}

/* ===== 子页面通用 Hero ===== */
.page-hero {
    padding: 140px 0 80px;
    background: var(--gradient-primary);
    color: var(--color-white);
    position: relative;
    overflow: hidden;
}

.page-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 80% 20%, rgba(6, 182, 212, 0.15) 0%, transparent 50%),
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: auto, 50px 50px, 50px 50px;
}

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

.page-hero h1 {
    font-size: 2.8rem;
    font-weight: 800;
    margin-bottom: 16px;
}

.page-hero .breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.page-hero .breadcrumb a {
    color: rgba(255, 255, 255, 0.5);
    transition: color var(--transition-fast);
}

.page-hero .breadcrumb a:hover {
    color: var(--color-cyan-light);
}

.page-hero .breadcrumb span {
    color: var(--color-cyan-light);
}

.page-hero p {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.7);
    max-width: 600px;
    line-height: 1.7;
}

/* ===== 时间线（关于页） ===== */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 12px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-gray-100);
}

.timeline-item {
    position: relative;
    padding-bottom: 40px;
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -34px;
    top: 6px;
    width: 14px;
    height: 14px;
    background: var(--color-white);
    border: 3px solid var(--color-accent);
    border-radius: 50%;
    z-index: 1;
}

.timeline-item .year {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--color-accent);
    margin-bottom: 8px;
}

.timeline-item h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.timeline-item p {
    color: var(--color-gray-700);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ===== 团队卡片 ===== */
.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.team-card {
    text-align: center;
    padding: 32px 20px;
    background: var(--color-white);
    border: 1px solid var(--color-gray-100);
    border-radius: 16px;
    transition: all var(--transition-base);
}

.team-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.team-avatar {
    width: 80px;
    height: 80px;
    margin: 0 auto 16px;
    background: var(--gradient-accent);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--color-white);
}

.team-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.team-card .role {
    font-size: 0.85rem;
    color: var(--color-accent);
    font-weight: 600;
    margin-bottom: 12px;
}

.team-card p {
    font-size: 0.85rem;
    color: var(--color-gray-500);
    line-height: 1.6;
}

/* ===== 产品详情列表 ===== */
.product-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
}

.product-showcase:nth-child(even) .product-info {
    order: 2;
}

.product-visual {
    background: var(--gradient-primary);
    border-radius: 20px;
    height: 360px;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-visual::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
}

.product-visual .product-icon-large {
    font-size: 5rem;
    color: rgba(255, 255, 255, 0.2);
    position: relative;
    z-index: 1;
}

.product-visual .product-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: relative;
    z-index: 0;
}

.product-visual .product-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: rgba(6, 182, 212, 0.2);
    border: 1px solid rgba(6, 182, 212, 0.3);
    color: var(--color-cyan-light);
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    z-index: 2;
    backdrop-filter: blur(4px);
}

.product-info .section-tag {
    margin-bottom: 12px;
}

.product-info h2 {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 16px;
}

.product-info p {
    color: var(--color-gray-700);
    line-height: 1.8;
    margin-bottom: 24px;
}

.product-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 28px;
}

.product-feature {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--color-gray-700);
}

.product-feature .check {
    width: 20px;
    height: 20px;
    background: rgba(37, 99, 235, 0.1);
    color: var(--color-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    flex-shrink: 0;
    margin-top: 1px;
}

/* ===== 联系页面 ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 48px;
}

.contact-info-card {
    background: var(--gradient-primary);
    border-radius: 20px;
    padding: 40px;
    color: var(--color-white);
    position: relative;
    overflow: hidden;
}

.contact-info-card::before {
    content: '';
    position: absolute;
    bottom: -30%;
    right: -30%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.15) 0%, transparent 70%);
    border-radius: 50%;
}

.contact-info-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 12px;
    position: relative;
}

.contact-info-card > p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 32px;
    position: relative;
}

.contact-info-list {
    position: relative;
}

.contact-info-item {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.contact-info-item .ci-icon {
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--color-cyan-light);
}

.contact-info-item .ci-content .label {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 4px;
}

.contact-info-item .ci-content .value {
    font-size: 1rem;
    color: var(--color-white);
    font-weight: 500;
}

.contact-form {
    background: var(--color-white);
    border: 1px solid var(--color-gray-100);
    border-radius: 20px;
    padding: 40px;
    box-shadow: var(--shadow-md);
}

.contact-form h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.contact-form > p {
    color: var(--color-gray-500);
    margin-bottom: 32px;
    font-size: 0.95rem;
}

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

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.form-group label .required {
    color: #EF4444;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid var(--color-gray-100);
    border-radius: 10px;
    font-size: 0.95rem;
    font-family: inherit;
    color: var(--color-gray-900);
    background: var(--color-gray-50);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    background: var(--color-white);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-submit {
    width: 100%;
    padding: 14px;
    font-size: 1rem;
}

.form-success {
    display: none;
    padding: 16px;
    background: rgba(37, 99, 235, 0.05);
    border: 1px solid rgba(37, 99, 235, 0.2);
    border-radius: 10px;
    color: var(--color-accent);
    font-size: 0.9rem;
    text-align: center;
    margin-top: 16px;
}

.form-success.show {
    display: block;
    animation: fadeInUp 0.4s ease;
}

/* ===== 合作伙伴 ===== */
.partners-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
}

.partner-item {
    aspect-ratio: 2 / 1;
    background: var(--color-white);
    border: 1px solid var(--color-gray-100);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gray-500);
    font-weight: 700;
    font-size: 0.9rem;
    transition: all var(--transition-base);
}

.partner-item:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

/* ===== 回到顶部 ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    background: var(--gradient-accent);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
    z-index: 999;
}

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

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.4);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .hero h1 { font-size: 2.8rem; }
    .section-title { font-size: 2rem; }
    .advantages-grid { grid-template-columns: repeat(2, 1fr); }
    .partners-grid { grid-template-columns: repeat(4, 1fr); }
    .team-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        flex-direction: column;
        background: rgba(10, 30, 63, 0.98);
        padding: 24px;
        gap: 20px;
        transform: translateY(-150%);
        transition: transform var(--transition-base);
        backdrop-filter: blur(20px);
    }

    .nav-menu.active {
        transform: translateY(0);
    }

    .nav-toggle {
        display: flex;
    }

    .hero { min-height: auto; padding: 120px 0 80px; }
    .hero h1 { font-size: 2.2rem; }
    .hero p { font-size: 1rem; }
    .hero-visual { display: none; }
    .hero-stats { flex-wrap: wrap; gap: 24px; }
    .hero-stat .number { font-size: 2rem; }

    .section { padding: 60px 0; }
    .section-title { font-size: 1.7rem; }

    .about-grid,
    .contact-grid,
    .product-showcase {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .product-showcase:nth-child(even) .product-info {
        order: 0;
    }

    .services-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }

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

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

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

    .solution-item {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .solution-item .sol-tags { justify-content: flex-start; }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }

    .form-row { grid-template-columns: 1fr; }

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

    .cta-content h2 { font-size: 1.8rem; }
    .cta-buttons { flex-direction: column; }
}

@media (max-width: 480px) {
    .hero h1 { font-size: 1.8rem; }
    .hero-buttons { flex-direction: column; }
    .hero-buttons .btn { width: 100%; }
    .section-title { font-size: 1.5rem; }
    .container, .container-narrow { padding: 0 16px; }
}