/* 全局样式重置 */
:root {
    --primary: #0066A9;
    --primary-dark: #005090;
    --primary-light: #007ACC;
    --secondary: #199630;
    --secondary-dark: #147a28;
    --accent: #00D4AA;
    --accent-light: #4DE8C5;
    --text-dark: #0f172a;
    --text-medium: #475569;
    --text-light: #64748b;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --bg-gradient-start: #0f172a;
    --bg-gradient-end: #1e293b;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --gradient-primary: linear-gradient(135deg, #003366 0%, #0066A9 35%, #0080CC 70%, #00A5E0 100%);
    --gradient-accent: linear-gradient(135deg, #0066A9 0%, #199630 100%);
    --gradient-hero: linear-gradient(135deg, #002244 0%, #004488 30%, #0066AA 60%, #0088CC 100%);
    --gradient-card: linear-gradient(145deg, #ffffff 0%, #f8fafc 100%);
    --gradient-glow: linear-gradient(135deg, rgba(0, 102, 169, 0.4) 0%, rgba(25, 150, 48, 0.4) 100%);
    --animate-duration: 0.4s;
    --animate-delay: 0.1s;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.8;
    color: var(--text-dark);
    overflow-x: hidden;
    background: var(--bg-white);
}

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

ul, ol {
    list-style: none;
}

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

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

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 1);
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 80px;
    position: relative;
}

.logo {
    position: absolute;
    left: 40px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo a {
    display: flex;
    align-items: center;
    text-decoration: none;
    transition: transform 0.3s ease;
}

.logo a:hover {
    transform: scale(1.02);
}

.logo img {
    max-height: 50px;
    width: auto;
    display: block;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
}

.logo-sub {
    font-size: 0.7rem;
    color: var(--text-light);
    letter-spacing: 3px;
    text-transform: uppercase;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 3.5rem;
}

.nav-item {
    position: relative;
}

.nav-link {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    font-size: 1.05rem;
    padding: 10px 0;
    display: block;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-accent);
    transition: width 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
}

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

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.mobile-menu-btn span {
    width: 28px;
    height: 3px;
    background: var(--text-dark);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 6px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -7px);
}

/* 下拉菜单 */
.dropdown {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: var(--bg-white);
    min-width: 260px;
    box-shadow: var(--shadow-lg);
    border-radius: 12px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    list-style: none;
    padding: 8px 0;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

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

.dropdown li {
    padding: 0;
}

.dropdown li a {
    display: block;
    padding: 14px 24px;
    color: var(--text-medium);
    text-decoration: none;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

.dropdown li a:hover {
    background: var(--bg-light);
    color: var(--primary);
    border-left-color: var(--primary);
}

/* 语言切换按钮 */
.lang-switcher {
    position: absolute;
    right: 40px;
    display: flex;
    gap: 8px;
    z-index: 1001;
}

.lang-switcher-btn {
    padding: 8px 16px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-medium);
    background: transparent;
    border: 2px solid transparent;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
}

.lang-switcher-btn:hover {
    color: var(--primary);
    background: var(--bg-light);
}

.lang-switcher-btn.active {
    color: white;
    background: var(--gradient-primary);
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.lang-switcher-btn.active:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* Hero 区域 */
.hero {
    position: relative;
    height: 100vh;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 68, 136, 0.6);
    pointer-events: none;
    z-index: 0;
}

.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
    z-index: 0;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(255, 255, 255, 0.6);
    border-radius: 50%;
    animation: float-particle 15s infinite ease-in-out;
}

.particle::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: inherit;
    border-radius: 50%;
    animation: pulse-particle 2s infinite ease-in-out;
}

@keyframes float-particle {
    0%, 100% {
        transform: translateY(100vh) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 0.8;
    }
    90% {
        opacity: 0.8;
    }
    100% {
        transform: translateY(-10vh) rotate(720deg);
        opacity: 0;
    }
}

@keyframes pulse-particle {
    0%, 100% {
        transform: scale(1);
        opacity: 0.6;
    }
    50% {
        transform: scale(1.5);
        opacity: 1;
    }
}

.hero-slider {
    height: 100%;
    position: relative;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 1s cubic-bezier(0.4, 0, 0.2, 1);
    background-size: cover;
    background-position: center;
}

.slide:nth-child(1) {
    background-image: url('../image/首页轮播图/hero-bg1.jpg');
}

.slide:nth-child(2) {
    background-image: url('../image/首页轮播图/hero-bg2.jpg');
}

.slide:nth-child(3) {
    background-image: url('../image/首页轮播图/hero-bg3.jpg');
}

.slide.active {
    opacity: 1;
}

.hero-content {
    text-align: center;
    color: white;
    max-width: 1000px;
    padding: 0 20px;
    position: relative;
    z-index: 1;
}

.hero-title-wrapper {
    animation: fadeInUp 1s cubic-bezier(0.4, 0, 0.2, 1) forwards;
    opacity: 0;
}

.hero-subtitle-wrapper {
    animation: fadeInUp 1s cubic-bezier(0.4, 0, 0.2, 1) 0.3s forwards;
    opacity: 0;
}

.hero-buttons-wrapper {
    animation: fadeInUp 1s cubic-bezier(0.4, 0, 0.2, 1) 0.6s forwards;
    opacity: 0;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInFromLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

.hero-title {
    font-size: 5.2rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    letter-spacing: 3px;
    line-height: 1.1;
    text-shadow: 
        0 4px 20px rgba(0,0,0,0.25),
        0 8px 40px rgba(0,0,0,0.15);
    background: linear-gradient(135deg, #ffffff 0%, #e0f2fe 50%, #ffffff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.hero-title::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, transparent 50%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shimmer 3s infinite;
}

.hero-subtitle {
    font-size: 1.8rem;
    margin-bottom: 4rem;
    opacity: 0.95;
    font-weight: 300;
    letter-spacing: 2px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
}

.btn {
    display: inline-block;
    padding: 18px 50px;
    border-radius: 60px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.05rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 2px solid transparent;
    cursor: pointer;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
    text-transform: uppercase;
    font-size: 0.95rem;
}

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

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

.btn-primary {
    background: linear-gradient(145deg, #ffffff, #f1f5f9);
    color: var(--primary);
    box-shadow: 
        0 8px 30px rgba(0,0,0,0.12),
        0 2px 8px rgba(0,0,0,0.08),
        inset 0 1px 0 rgba(255,255,255,0.8);
}

.btn-primary:hover {
    background: var(--gradient-primary);
    border-color: transparent;
    color: white;
    transform: translateY(-6px) scale(1.03);
    box-shadow: 
        0 20px 50px rgba(0, 102, 169, 0.4),
        0 10px 25px rgba(0, 102, 169, 0.3),
        0 0 0 1px rgba(255,255,255,0.1) inset;
}

.btn-secondary {
    background: transparent;
    border-color: rgba(255,255,255,0.8);
    color: white;
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.95);
    border-color: white;
    color: var(--primary);
    transform: translateY(-6px) scale(1.03);
    box-shadow: 
        0 20px 50px rgba(0, 0, 0, 0.3),
        0 10px 25px rgba(0, 0, 0, 0.2);
}

.btn-outline {
    background: linear-gradient(145deg, #ffffff, #f8fafc);
    border-color: var(--primary);
    color: var(--primary);
    box-shadow: 
        0 8px 30px rgba(0,0,0,0.12),
        inset 0 1px 0 rgba(255,255,255,0.8);
}

.btn-outline:hover {
    background: var(--gradient-primary);
    border-color: transparent;
    color: white;
    transform: translateY(-6px) scale(1.03);
    box-shadow: 
        0 20px 50px rgba(0, 102, 169, 0.4),
        0 10px 25px rgba(0, 102, 169, 0.3);
}

/* 轮播控制 */
.slider-controls {
    position: absolute;
    bottom: 60px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 18px;
    z-index: 10;
}

.slider-dot {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.35);
    border: 2px solid rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.slider-dot.active {
    background: white;
    border-color: white;
    transform: scale(1.4);
    box-shadow: 0 4px 15px rgba(255, 255, 255, 0.4);
}

.slider-dot:hover {
    background: rgba(255, 255, 255, 0.7);
    transform: scale(1.15);
}

/* 滚动提示 */
.scroll-indicator {
    position: absolute;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%);
    color: white;
    text-align: center;
    opacity: 0.8;
}

.scroll-indicator span {
    font-size: 0.9rem;
    letter-spacing: 2px;
}

.scroll-arrow {
    width: 28px;
    height: 28px;
    border-right: 3px solid white;
    border-bottom: 3px solid white;
    transform: rotate(45deg);
    margin: 15px auto 0;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: rotate(45deg) translateY(0);
    }
    40% {
        transform: rotate(45deg) translateY(12px);
    }
    60% {
        transform: rotate(45deg) translateY(6px);
    }
}

/* Section 通用样式 */
.section-title {
    font-size: 3rem;
    font-weight: 700;
    text-align: center;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.section-subtitle {
    text-align: center;
    color: var(--text-medium);
    font-size: 1.25rem;
    margin-bottom: 4rem;
}

/* 解决方案 Section */
.solutions-section {
    padding: 140px 0;
    background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 50%, #f8fafc 100%);
    position: relative;
}

.solutions-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(0, 102, 169, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(25, 150, 48, 0.03) 0%, transparent 50%);
    pointer-events: none;
}

.solutions-section {
    padding: 80px 0;
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    position: relative;
    z-index: 1;
}

.solution-card {
    background: var(--bg-light);
    padding: 3rem 2rem;
    border-radius: 20px;
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid transparent;
}

.solution-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-accent);
    transform: scaleX(0);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.solution-card:hover {
    background: white;
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(0,102,169,0.1);
}

.solution-icon-wrapper {
    width: 80px;
    height: 80px;
    position: relative;
    margin: 0 auto 1.5rem;
}

.solution-icon {
    font-size: 3rem;
    position: relative;
    z-index: 1;
}

.solution-icon-bg {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    background: var(--gradient-accent);
    opacity: 0.1;
    border-radius: 16px;
    transition: all 0.4s ease;
}

.solution-card:hover .solution-icon-bg {
    opacity: 0.15;
    transform: translate(-50%, -50%) scale(1.1);
}

.solution-card h3 {
    font-size: 1.35rem;
    color: var(--primary);
    margin-bottom: 1rem;
    font-weight: 700;
    text-align: center;
}

.solution-card p {
    color: var(--text-medium);
    line-height: 1.7;
    margin-bottom: 1.25rem;
    font-size: 0.95rem;
    text-align: center;
}

.solution-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.solution-card:hover .solution-link {
    gap: 0.75rem;
}

.link-arrow {
    transition: transform 0.3s ease;
}

.solution-card:hover .link-arrow {
    transform: translateX(4px);
}

.industry-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.industry-item {
    background: white;
    padding: 1.5rem;
    border-radius: 16px;
    text-align: center;
    font-weight: 600;
    color: var(--text-dark);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.industry-item:hover {
    background: var(--gradient-accent);
    color: white;
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.solution-card {
    background: var(--gradient-card);
    padding: 3rem 2rem;
    border-radius: 20px;
    text-align: center;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 
        var(--shadow-sm),
        inset 0 1px 0 rgba(255,255,255,0.8);
    position: relative;
    overflow: hidden;
    transform-style: preserve-3d;
}

.solution-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: var(--gradient-accent);
    transform: scaleX(0);
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 20px 20px 0 0;
}

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

.solution-card::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(
        from 0deg,
        transparent 0deg,
        rgba(0, 102, 169, 0.03) 60deg,
        transparent 120deg,
        transparent 180deg,
        rgba(25, 150, 48, 0.03) 240deg,
        transparent 300deg,
        transparent 360deg
    );
    opacity: 0;
    transition: opacity 0.5s ease;
    animation: rotate-slow 20s linear infinite;
}

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

.solution-card:hover {
    transform: translateY(-20px) scale(1.02) rotateX(2deg);
    box-shadow: 
        var(--shadow-xl),
        0 0 40px rgba(0, 102, 169, 0.15);
}

.card-icon-wrapper {
    position: relative;
    margin-bottom: 1.5rem;
    z-index: 1;
}

.card-icon {
    font-size: 4rem;
    margin-bottom: 0;
    display: inline-block;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.card-icon::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background: var(--gradient-accent);
    opacity: 0;
    border-radius: 50%;
    filter: blur(15px);
    transition: opacity 0.5s ease;
}

.solution-card:hover .card-icon {
    transform: scale(1.2) rotate(8deg);
}

.solution-card:hover .card-icon::before {
    opacity: 0.3;
}

.solution-card h3 {
    font-size: 1.4rem;
    color: var(--primary);
    margin-bottom: 1rem;
    font-weight: 700;
    position: relative;
    z-index: 1;
    transition: color 0.3s ease;
}

.solution-card:hover h3 {
    color: var(--primary-dark);
}

.solution-card p {
    color: var(--text-medium);
    font-size: 1rem;
    line-height: 2;
    margin-bottom: 1.5rem;
    position: relative;
    z-index: 1;
}

.card-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    position: relative;
    z-index: 1;
    padding: 0.75rem 1.5rem;
    border-radius: 30px;
    background: rgba(0, 102, 169, 0.05);
}

.card-link:hover {
    color: white;
    gap: 1rem;
    background: var(--gradient-accent);
    box-shadow: 0 8px 25px rgba(0, 102, 169, 0.3);
}

/* 数据统计 Section */
.stats-section {
    padding: 120px 0;
    background: var(--gradient-hero);
    background-size: 400% 400%;
    animation: gradient-shift 12s ease infinite;
    color: white;
    position: relative;
    overflow: hidden;
}

.stats-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 10% 30%, rgba(0, 165, 224, 0.15) 0%, transparent 45%),
        radial-gradient(circle at 90% 70%, rgba(25, 150, 48, 0.12) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(0, 212, 170, 0.08) 0%, transparent 35%);
    pointer-events: none;
}

.stats-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
    z-index: 0;
}

.stat-particle {
    position: absolute;
    width: 6px;
    height: 6px;
    background: rgba(255, 255, 255, 0.4);
    border-radius: 50%;
    animation: stat-float 8s infinite ease-in-out;
}

@keyframes stat-float {
    0%, 100% {
        transform: translateY(0) translateX(0);
        opacity: 0;
    }
    10% {
        opacity: 0.6;
    }
    50% {
        transform: translateY(-50px) translateX(20px);
        opacity: 0.8;
    }
    90% {
        opacity: 0.6;
    }
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 3rem;
    position: relative;
    z-index: 1;
}

.stat-item {
    text-align: center;
    padding: 3rem 2rem;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.stat-item::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120px;
    height: 120px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    opacity: 0;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.stat-item:hover::before {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.5);
}

.stat-item:hover {
    transform: translateY(-12px) scale(1.05);
}

.stat-number-wrapper {
    position: relative;
    display: inline-block;
}

.stat-number {
    font-size: 5rem;
    font-weight: 800;
    margin-bottom: 0.75rem;
    font-family: 'Arial', 'Helvetica Neue', sans-serif;
    text-shadow: 
        0 4px 20px rgba(0,0,0,0.3),
        0 8px 40px rgba(0,0,0,0.15);
    background: linear-gradient(135deg, #ffffff 0%, #e0f2fe 50%, #ffffff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.stat-number::after {
    content: attr(data-suffix);
    font-size: 1.5rem;
    font-weight: 500;
    margin-left: 0.25rem;
    color: rgba(255, 255, 255, 0.8);
    -webkit-text-fill-color: rgba(255, 255, 255, 0.8);
}

.stat-label {
    font-size: 1.35rem;
    opacity: 0.95;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    position: relative;
}

.stat-item:hover .stat-label {
    opacity: 1;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

/* 新闻中心 Section */
.news-section {
    padding: 140px 0;
    background: linear-gradient(180deg, #ffffff 0%, #fafbfc 100%);
    position: relative;
}

.news-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 102, 169, 0.2), transparent);
}

.news-list {
    max-width: 1100px;
    margin: 0 auto;
}

.news-item {
    display: flex;
    gap: 3.5rem;
    padding: 3rem 2.5rem;
    border-radius: 16px;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    align-items: center;
    background: white;
    box-shadow: var(--shadow-sm);
    margin-bottom: 1.5rem;
    border: 1px solid rgba(0, 0, 0, 0.04);
    position: relative;
    overflow: hidden;
}

.news-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--gradient-accent);
    transform: scaleY(0);
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.news-item:hover::before {
    transform: scaleY(1);
}

.news-item:hover {
    transform: translateY(-8px) scale(1.01);
    box-shadow: var(--shadow-lg);
}

.news-date-wrapper {
    position: relative;
    z-index: 1;
}

.news-date {
    min-width: 150px;
    color: var(--primary);
    font-weight: 700;
    font-size: 1.1rem;
    padding: 1rem 1.5rem;
    background: linear-gradient(145deg, rgba(0, 102, 169, 0.08), rgba(0, 102, 169, 0.04));
    border-radius: 12px;
    text-align: center;
    transition: all 0.4s ease;
    border: 1px solid rgba(0, 102, 169, 0.1);
}

.news-item:hover .news-date {
    background: var(--gradient-accent);
    color: white;
    transform: scale(1.05);
}

.news-content {
    flex: 1;
    position: relative;
    z-index: 1;
}

.news-content h3 {
    font-size: 1.4rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
    font-weight: 700;
    transition: all 0.3s ease;
    line-height: 1.5;
    position: relative;
}

.news-content h3::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 3px;
    background: var(--gradient-accent);
    border-radius: 2px;
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.news-item:hover .news-content h3 {
    color: var(--primary);
}

.news-item:hover .news-content h3::after {
    width: 60px;
}

.news-content p {
    color: var(--text-medium);
    font-size: 1rem;
    line-height: 1.9;
    margin-bottom: 1.25rem;
}

.news-link {
    color: var(--primary);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1.25rem;
    border-radius: 25px;
    background: rgba(0, 102, 169, 0.05);
}

.news-link:hover {
    color: white;
    gap: 1rem;
    background: var(--gradient-accent);
    box-shadow: 0 6px 20px rgba(0, 102, 169, 0.3);
}

/* 关于我们 Section */
.about-section {
    padding: 120px 0;
    background: var(--bg-light);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
}

.about-text h2 {
    font-size: 3rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 2rem;
    font-weight: 700;
}

.about-text p {
    color: var(--text-medium);
    font-size: 1.1rem;
    line-height: 2.2;
    margin-bottom: 1.5rem;
}

.about-image {
    position: relative;
}

.about-image .image-placeholder {
    background: linear-gradient(135deg, #e8f4f8 0%, #d0e8f0 100%);
    height: 500px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.about-image .image-placeholder:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.about-image .image-placeholder::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 102, 169, 0.15), rgba(25, 150, 48, 0.12));
}

.placeholder-content {
    text-align: center;
    color: #718096;
    z-index: 1;
}

.placeholder-icon {
    font-size: 6.5rem;
    margin-bottom: 1.5rem;
}

/* 页面 Hero */
.page-hero {
    padding: 180px 0 100px;
    background: linear-gradient(135deg, #004080 0%, #0066A9 100%);
    color: white;
    text-align: center;
}

.page-hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    letter-spacing: 2px;
}

.page-hero p {
    font-size: 1.3rem;
    opacity: 0.9;
    max-width: 700px;
    margin: 0 auto;
}

/* 解决方案详情页 */
.solution-detail {
    padding: 100px 0;
}

.solution-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
    margin-bottom: 80px;
}

.solution-intro.reverse {
    direction: rtl;
}

.solution-intro.reverse > * {
    direction: ltr;
}

.solution-intro h2 {
    font-size: 2.8rem;
    color: #0066A9;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.solution-intro p {
    color: #555;
    font-size: 1.1rem;
    line-height: 2;
    margin-bottom: 2rem;
}

.solution-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    margin-top: 80px;
}

.feature-item {
    text-align: center;
    padding: 2.5rem;
    background: #f8fafc;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.feature-item h3 {
    font-size: 1.3rem;
    color: #0066A9;
    margin-bottom: 1rem;
}

.feature-item p {
    color: #666;
    line-height: 1.8;
}

/* 技术页面 */
.technology-section {
    padding: 100px 0;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 4rem;
    margin-bottom: 80px;
}

.tech-item {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.tech-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.12);
}

.tech-image {
    height: 250px;
    background: linear-gradient(135deg, #e8f4f8, #d0e8f0);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
}

.tech-content {
    padding: 2.5rem;
}

.tech-content h3 {
    font-size: 1.8rem;
    color: #0066A9;
    margin-bottom: 1rem;
}

.tech-content p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

/* 联系页面 */
.contact-section {
    padding: 100px 0;
    background: #f8fafc;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
}

.contact-info h2 {
    font-size: 2.8rem;
    color: #0066A9;
    margin-bottom: 2rem;
}

.contact-info p {
    color: #555;
    font-size: 1.1rem;
    line-height: 2;
    margin-bottom: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.contact-icon {
    font-size: 2rem;
}

.contact-item strong {
    color: #0066A9;
    font-size: 1.1rem;
}

.contact-item span {
    color: #666;
}

.contact-form {
    background: white;
    padding: 3rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #333;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #0066A9;
    box-shadow: 0 0 0 3px rgba(0, 102, 169, 0.1);
}

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

.form-btn {
    width: 100%;
    padding: 16px;
    background: #0066A9;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 1.1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.form-btn:hover {
    background: #005090;
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 102, 169, 0.3);
}

/* 新闻列表页 */
.news-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
    margin-top: 4rem;
}

.news-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.news-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.12);
}

.news-card-image {
    height: 250px;
    background: linear-gradient(135deg, #e8f4f8, #d0e8f0);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
}

.news-card-content {
    padding: 2rem;
}

.news-card-date {
    color: #0066A9;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.news-card-title {
    font-size: 1.4rem;
    color: #333;
    margin-bottom: 1rem;
    line-height: 1.6;
    transition: color 0.3s ease;
}

.news-card:hover .news-card-title {
    color: #0066A9;
}

.news-card-excerpt {
    color: #666;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

/* 关于页面 */
.about-page {
    padding: 100px 0;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    margin: 4rem 0;
}

.about-card {
    text-align: center;
    padding: 3rem 2rem;
    background: #f8fafc;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.about-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.about-icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
}

.about-card h3 {
    font-size: 1.5rem;
    color: #0066A9;
    margin-bottom: 1rem;
}

.about-card p {
    color: #666;
    line-height: 1.8;
}

/* 公司历史 */
.timeline {
    padding: 80px 0;
    background: #f8fafc;
}

.timeline-item {
    display: flex;
    gap: 3rem;
    margin-bottom: 3rem;
    align-items: flex-start;
}

.timeline-year {
    min-width: 120px;
    font-size: 2rem;
    font-weight: 700;
    color: #0066A9;
}

.timeline-content h3 {
    font-size: 1.4rem;
    color: #333;
    margin-bottom: 0.5rem;
}

/* CTA区域 */
.cta-section {
    padding: 60px 0;
    text-align: center;
    background: white;
    position: relative;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 10%;
    right: 10%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0,102,169,0.3), transparent);
}

.cta-content {
    max-width: 800px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
    line-height: 1.4;
}

.cta-content p {
    font-size: 1.1rem;
    color: var(--text-medium);
    margin-bottom: 2.5rem;
    line-height: 1.8;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.timeline-content p {
    color: #666;
    line-height: 1.8;
}

/* 页脚 */
.footer {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
    color: white;
    padding: 80px 0 40px;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 10% 20%, rgba(255,255,255,0.08) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(25,150,48,0.15) 0%, transparent 40%);
    pointer-events: none;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3.5rem;
    margin-bottom: 4rem;
    position: relative;
    z-index: 1;
}

.footer-column h3 {
    font-size: 1.6rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
    line-height: 1.4;
}

.footer-column h4 {
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    color: rgba(255, 255, 255, 0.95);
    font-weight: 600;
    position: relative;
    padding-bottom: 12px;
}

.footer-column h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: linear-gradient(90deg, var(--secondary), rgba(255,255,255,0.3));
    border-radius: 2px;
}

.footer-column p {
    color: rgba(255, 255, 255, 0.85);
    line-height: 2;
    margin-bottom: 0.5rem;
}

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

.footer-column ul li {
    margin-bottom: 1rem;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.footer-column ul li a {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.footer-column ul li a:hover {
    color: white;
    transform: translateX(5px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.25);
    padding-top: 2.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    z-index: 1;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
}

.footer-links {
    display: flex;
    gap: 2.5rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 0.95rem;
}

.footer-links a:hover {
    color: white;
}

.footer-short-name {
    font-size: 1.1rem;
    font-weight: 500;
    color: rgba(255,255,255,0.95);
    letter-spacing: 2px;
}

.company-address, 
.company-phone, 
.company-email, 
.company-hours {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 400;
    white-space: nowrap;
}

.company-email {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    transition: all 0.3s ease;
}

.company-email:hover {
    color: white;
    text-decoration: underline;
}

/* ================= 关于我们页面样式 ================= */

/* About Hero */
.about-hero {
    position: relative;
    min-height: 100vh;
    background: url('../image/解决方案图片/解决方案首页/solutions-bg.jpg') center/cover no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 120px 0 80px;
}

.about-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 68, 136, 0.6);
    pointer-events: none;
    z-index: 0;
}

.about-hero.solutions-list {
    background-image: url('../image/解决方案图片/解决方案首页/solutions-bg.jpg');
}

.about-hero.solution-1 {
    background-image: url('../image/解决方案图片/废油再生设备/solution-1-bg.jpg');
}

.about-hero.solution-2 {
    background-image: url('../image/解决方案图片/溶剂精制设备/solution-2-bg.jpg');
}

.about-hero.solution-3 {
    background-image: url('../image/解决方案图片/污水处理设备/solution-3-bg.jpg');
}

.about-hero.solution-4 {
    background-image: url('../image/解决方案图片/污水处理工程/solution-4-bg.jpg');
}

.about-hero.solution-5 {
    background-image: url('../image/解决方案图片/离心萃取设备/solution-5-bg.jpg');
}

.about-hero.solution-6 {
    background-image: url('../image/解决方案图片/卧式离心设备/solution-6-bg.jpg');
}

.about-hero.solution-7 {
    background-image: url('../image/解决方案图片/推料离心设备/solution-7-bg.jpg');
}

.about-hero.solution-8 {
    background-image: url('../image/解决方案图片/定制专用设备/solution-8-bg.jpg');
}

.about-hero.about-page {
    background-image: url('../image/关于我们图片/about-bg.jpg');
}

.about-hero.news-page {
    background-image: url('../image/新闻中心图片/news-bg.jpg');
}

.about-hero.contact-page {
    background-image: url('../image/联系我们图片/contact-bg.jpg');
}

.about-hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
    z-index: 0;
}

.about-hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
}

.about-hero-title {
    font-size: 4.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.title-line {
    display: block;
    color: white;
    text-shadow: 0 4px 20px rgba(0,0,0,0.25);
}

.title-line.gradient-text {
    background: linear-gradient(135deg, #00d4aa 0%, #4de8c5 50%, #00d4aa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% 200%;
    animation: gradient-shift 4s ease infinite;
}

.about-hero-subtitle {
    font-size: 1.3rem;
    color: rgba(255,255,255,0.9);
    line-height: 1.8;
    margin-bottom: 3rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0;
}

.hero-stat-item {
    text-align: center;
    padding: 0 2rem;
}

.hero-stat-number {
    font-size: 3.5rem;
    font-weight: 800;
    color: white;
    font-family: 'Arial', sans-serif;
    text-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

.hero-stat-label {
    font-size: 1rem;
    color: rgba(255,255,255,0.8);
    margin-top: 0.5rem;
    letter-spacing: 1px;
}

.hero-stat-divider {
    width: 1px;
    height: 60px;
    background: rgba(255,255,255,0.3);
}

.scroll-indicator-down {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: rgba(255,255,255,0.7);
    animation: bounce-gentle 2s ease-in-out infinite;
}

.scroll-indicator-down span {
    display: block;
    font-size: 0.9rem;
    letter-spacing: 2px;
    margin-bottom: 10px;
}

.scroll-arrow-down {
    width: 24px;
    height: 24px;
    border-right: 3px solid rgba(255,255,255,0.7);
    border-bottom: 3px solid rgba(255,255,255,0.7);
    transform: rotate(45deg);
    margin: 0 auto;
}

/* Section Header */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-tag {
    display: inline-block;
    padding: 0.5rem 1.25rem;
    background: linear-gradient(135deg, rgba(0,102,169,0.1) 0%, rgba(25,150,48,0.1) 100%);
    color: var(--primary);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 1px;
    border-radius: 50px;
    margin-bottom: 1rem;
    border: 1px solid rgba(0,102,169,0.2);
}

.section-title-large {
    font-size: 3rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.section-description {
    font-size: 1.1rem;
    color: var(--text-medium);
    max-width: 600px;
    margin: 0 auto 1.5rem;
    line-height: 1.8;
}

.section-divider {
    width: 80px;
    height: 4px;
    background: var(--gradient-accent);
    margin: 0 auto;
    border-radius: 2px;
}

/* Profile Section */
.profile-section {
    padding: 120px 0;
    background: var(--bg-light);
}

.profile-content {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
    align-items: start;
}

.profile-text-block {
    margin-bottom: 2.5rem;
}

.profile-subtitle {
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: 1rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.profile-subtitle::before {
    content: '';
    width: 4px;
    height: 28px;
    background: var(--gradient-accent);
    border-radius: 2px;
}

.profile-text-block p {
    color: var(--text-medium);
    line-height: 2;
    font-size: 1.05rem;
}

.profile-visual {
    position: sticky;
    top: 120px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.visual-card {
    background: white;
    padding: 2rem 1rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.visual-icon {
    font-size: 3rem;
    margin-bottom: 0.75rem;
}

.visual-label {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-dark);
}

.visual-card-large {
    grid-column: span 2;
    background: var(--gradient-card);
    padding: 3rem 2rem;
    border-radius: 20px;
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.decoration-circle {
    position: absolute;
    border-radius: 50%;
    background: var(--gradient-accent);
    opacity: 0.1;
}

.circle-1 {
    width: 120px;
    height: 120px;
    top: -40px;
    right: -40px;
}

.circle-2 {
    width: 80px;
    height: 80px;
    bottom: -20px;
    left: -20px;
}

.circle-3 {
    width: 60px;
    height: 60px;
    top: 30%;
    left: 20%;
}

.visual-main-icon {
    font-size: 5rem;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.visual-main-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    position: relative;
    z-index: 1;
}

/* Strengths Section */
.strengths-section {
    padding: 120px 0;
    background: white;
}

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

.strength-card {
    background: var(--bg-light);
    padding: 3rem 2.5rem;
    border-radius: 20px;
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid transparent;
}

.strength-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-accent);
    transform: scaleX(0);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.strength-card:hover {
    background: white;
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(0,102,169,0.1);
}

.strength-icon-wrapper {
    width: 80px;
    height: 80px;
    position: relative;
    margin-bottom: 1.5rem;
}

.strength-icon {
    font-size: 3rem;
    position: relative;
    z-index: 1;
}

.strength-icon-bg {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    background: var(--gradient-accent);
    opacity: 0.1;
    border-radius: 16px;
    transition: all 0.4s ease;
}

.strength-card:hover .strength-icon-bg {
    opacity: 0.15;
    transform: translate(-50%, -50%) scale(1.1);
}

.strength-card h3 {
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: 1rem;
    font-weight: 700;
}

.strength-card p {
    color: var(--text-medium);
    line-height: 1.8;
    margin-bottom: 1.25rem;
}

.strength-points {
    list-style: none;
}

.strength-points li {
    color: var(--text-medium);
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.strength-points li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--secondary);
    font-weight: 700;
}

/* History Section */
.history-section {
    padding: 120px 0;
    background: var(--bg-light);
}

.timeline-container {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.timeline-line {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: 2px;
}

.timeline-item {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 3rem;
    position: relative;
}

.timeline-item:nth-child(even) {
    justify-content: flex-start;
}

.timeline-year {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 80px;
    background: white;
    border: 4px solid;
    border-image: var(--gradient-accent) 1;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--primary);
    z-index: 1;
    box-shadow: var(--shadow-sm);
}

.timeline-marker {
    display: none;
}

.timeline-content {
    width: calc(50% - 80px);
    padding: 2rem;
    background: white;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-right:40px;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: 60px;
}

.timeline-content::before {
    content: '';
    position: absolute;
    top: 50%;
    width: 20px;
    height: 20px;
    background: white;
    transform: translateY(-50%) rotate(45deg);
}

.timeline-item:nth-child(odd) .timeline-content::before {
    right: -10px;
}

.timeline-item:nth-child(even) .timeline-content::before {
    left: -10px;
}

.timeline-content:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.timeline-content h3 {
    font-size: 1.4rem;
    color: var(--primary);
    margin-bottom: 0.75rem;
    font-weight: 700;
}

.timeline-content p {
    color: var(--text-medium);
    line-height: 1.8;
}

/* Culture Section */
.culture-section {
    padding: 120px 0;
    background: white;
}

.culture-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    margin-bottom: 4rem;
}

.culture-card {
    background: var(--bg-light);
    padding: 2.5rem;
    border-radius: 20px;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid transparent;
}

.culture-card-large {
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    background: var(--gradient-card);
    padding: 3rem;
}

.culture-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
    border-color: rgba(0,102,169,0.1);
}

.culture-icon-wrapper {
    width: 100px;
    height: 100px;
    background: var(--gradient-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    opacity: 0.9;
}

.culture-icon {
    font-size: 3.5rem;
}

.culture-card h3 {
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: 1rem;
    font-weight: 700;
}

.culture-quote {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 1.5rem;
    font-family: 'Georgia', serif;
}

.culture-description {
    color: var(--text-medium);
    line-height: 2;
}

.culture-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.values-showcase {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    padding: 3rem;
    background: var(--bg-light);
    border-radius: 20px;
}

.value-item {
    text-align: center;
    position: relative;
}

.value-number {
    font-size: 4rem;
    font-weight: 800;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.75rem;
    line-height: 1;
}

.value-content h4 {
    font-size: 1.25rem;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.value-content p {
    color: var(--text-medium);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* CTA Section Advanced */
.cta-section-advanced {
    padding: 100px 0;
    background: var(--gradient-hero);
    background-size: 400% 400%;
    animation: gradient-shift 15s ease infinite;
    position: relative;
    overflow: hidden;
}

.cta-content-advanced {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 3rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.cta-text h2 {
    font-size: 2.75rem;
    color: white;
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.cta-text p {
    font-size: 1.2rem;
    color: rgba(255,255,255,0.9);
    line-height: 1.8;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

.btn-large {
    padding: 1.25rem 2.5rem;
    font-size: 1.05rem;
}

/* Button Enhancements */
.btn-primary {
    position: relative;
    overflow: hidden;
}

.btn-primary::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.6s ease;
}

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

/* Responsive for About Page */
@media (max-width: 1200px) {
    .profile-content {
        grid-template-columns: 1fr;
    }
    
    .profile-visual {
        position: static;
    }
    
    .culture-content {
        grid-template-columns: 1fr;
    }
    
    .values-showcase {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .about-hero-title {
        font-size: 3rem;
    }
    
    .strengths-grid {
        grid-template-columns: 1fr;
    }
    
    .timeline-line {
        left: 40px;
    }
    
    .timeline-year {
        left: 40px;
        width: 60px;
        height: 60px;
        font-size: 1rem;
    }
    
    .timeline-content {
        width: calc(100% - 100px);
        margin-left: 80px !important;
        margin-right: 0 !important;
    }
    
    .timeline-item:nth-child(odd) .timeline-content::before,
    .timeline-item:nth-child(even) .timeline-content::before {
        left: -10px;
        right: auto;
    }
    
    .cta-content-advanced {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .cta-buttons {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .about-hero {
        min-height: auto;
        padding: 100px 0 60px;
    }
    
    .about-hero-title {
        font-size: 2.25rem;
    }
    
    .about-hero-subtitle {
        font-size: 1.05rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .hero-stat-divider {
        width: 60px;
        height: 1px;
    }
    
    .profile-visual {
        grid-template-columns: 1fr;
    }
    
    .visual-card-large {
        grid-column: span 1;
    }
    
    .section-title-large {
        font-size: 2rem;
    }
    
    .culture-grid {
        grid-template-columns: 1fr;
    }
    
    .values-showcase {
        grid-template-columns: 1fr;
        padding: 2rem;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .btn-large {
        width: 100%;
    }
}

/* ================= 解决方案页面样式 ================= */

/* Solutions Hero */
.solutions-hero {
    position: relative;
    min-height: 80vh;
    background: var(--gradient-hero);
    background-size: 400% 400%;
    animation: gradient-shift 15s ease infinite;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 120px 0 80px;
}

.solutions-hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
    z-index: 0;
}

.solutions-hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 1000px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.badge-icon {
    font-size: 1.25rem;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    color: white;
    line-height: 1.15;
    margin-bottom: 1.5rem;
    text-shadow: 0 4px 20px rgba(0,0,0,0.25);
}

.hero-subtitle {
    font-size: 1.3rem;
    color: rgba(255,255,255,0.9);
    line-height: 1.8;
    margin-bottom: 3rem;
}

.hero-stats-row {
    display: flex;
    justify-content: center;
    gap: 4rem;
}

.stat-box {
    text-align: center;
}

.stat-value {
    font-size: 3rem;
    font-weight: 800;
    color: white;
    font-family: 'Arial', sans-serif;
    text-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.stat-label {
    font-size: 1rem;
    color: rgba(255,255,255,0.8);
    margin-top: 0.5rem;
    letter-spacing: 1px;
}

/* Solutions Grid Section */
.solutions-grid-section {
    padding: 120px 0;
    background: var(--bg-light);
}

.solutions-mega-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.solution-card-xl {
    grid-column: span 2;
    background: white;
    border-radius: 24px;
    padding: 3rem;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.card-bg-gradient {
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0,102,169,0.05) 0%, rgba(0,102,169,0.1) 100%);
    border-radius: 0 24px 24px 0;
}

.card-bg-gradient-alt {
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: linear-gradient(135deg, rgba(25,150,48,0.05) 0%, rgba(25,150,48,0.1) 100%);
    border-radius: 0 24px 24px 0;
}

.card-content {
    position: relative;
    z-index: 1;
}

.card-icon-xl {
    font-size: 5rem;
    margin-bottom: 1.5rem;
}

.solution-card-xl h3 {
    font-size: 1.75rem;
    color: var(--primary);
    margin-bottom: 1rem;
    font-weight: 700;
}

.solution-card-xl p {
    color: var(--text-medium);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.card-features {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.card-features li {
    padding: 0.5rem 1rem;
    background: rgba(0,102,169,0.08);
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--primary);
}

.card-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    background: var(--gradient-accent);
    color: white;
    text-decoration: none;
    border-radius: 30px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.card-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 102, 169, 0.3);
}

.solution-card-lg {
    background: white;
    border-radius: 20px;
    padding: 2.5rem 2rem;
    box-shadow: var(--shadow-sm);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.solution-card-lg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-accent);
    transform: scaleX(0);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

.card-icon-wrapper {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, rgba(0,102,169,0.1), rgba(25,150,48,0.1));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    transition: all 0.4s ease;
}

.solution-card-lg:hover .card-icon-wrapper {
    transform: scale(1.1);
    background: linear-gradient(135deg, rgba(0,102,169,0.15), rgba(25,150,48,0.15));
}

.card-icon {
    font-size: 3rem;
}

.solution-card-lg h3 {
    font-size: 1.35rem;
    color: var(--primary);
    margin-bottom: 0.75rem;
    font-weight: 700;
}

.solution-card-lg p {
    color: var(--text-medium);
    line-height: 1.6;
    margin-bottom: 1.25rem;
    font-size: 0.95rem;
}

.solution-card-lg .card-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    transition: all 0.3s ease;
}

.solution-card-lg:hover .card-link {
    gap: 0.6rem;
    color: var(--secondary);
}

/* Choose Us Section */
.choose-us-section {
    padding: 120px 0;
    background: white;
}

.choose-us-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.choose-card {
    background: var(--bg-light);
    padding: 2.5rem 2rem;
    border-radius: 20px;
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.choose-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    background: white;
}

.choose-icon {
    font-size: 3rem;
    margin-bottom: 1.25rem;
}

.choose-card h3 {
    font-size: 1.35rem;
    color: var(--primary);
    margin-bottom: 0.75rem;
    font-weight: 700;
}

.choose-card p {
    color: var(--text-medium);
    line-height: 1.7;
}

.choose-number {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 4rem;
    font-weight: 800;
    color: rgba(0, 102, 169, 0.05);
    font-family: 'Arial', sans-serif;
}

/* Industry Section */
.industry-section {
    padding: 120px 0;
    background: var(--bg-light);
}

.industry-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
}

.industry-tag {
    padding: 1rem 2rem;
    background: white;
    border-radius: 50px;
    font-weight: 600;
    color: var(--text-dark);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    cursor: default;
}

.industry-tag:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    background: var(--gradient-accent);
    color: white;
}

/* Solution Detail Page Styles */
.solution-detail-page {
    padding: 80px 0;
}

.solution-detail-hero {
    position: relative;
    padding: 80px 0;
    background: linear-gradient(135deg, rgba(0,102,169,0.05), rgba(25,150,48,0.05));
}

.solution-detail-hero h1 {
    font-size: 3rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.solution-detail-hero p {
    font-size: 1.2rem;
    color: var(--text-medium);
}

.solution-main-content {
    padding: 60px 0;
}

.solution-header {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
    margin-bottom: 60px;
}

.solution-text h2 {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.solution-text p {
    color: var(--text-medium);
    line-height: 2;
    margin-bottom: 1.25rem;
}

.solution-visual {
    background: linear-gradient(135deg, rgba(0,102,169,0.08), rgba(25,150,48,0.08));
    border-radius: 20px;
    padding: 3rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.solution-main-icon {
    font-size: 5rem;
    margin-bottom: 1rem;
}

.solution-visual-label {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary);
}

.solution-features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.solution-feature-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: center;
}

.solution-feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
}

.feature-icon-wrapper {
    width: 70px;
    height: 70px;
    background: var(--gradient-accent);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    opacity: 0.9;
}

.feature-icon {
    font-size: 2.5rem;
}

.solution-feature-card h3 {
    font-size: 1.25rem;
    color: var(--text-dark);
    margin-bottom: 0.75rem;
    font-weight: 700;
}

.solution-feature-card p {
    color: var(--text-medium);
    line-height: 1.7;
    font-size: 0.95rem;
}

.solution-advantages {
    padding: 60px 0;
    background: var(--bg-light);
}

.solution-advantages .section-header {
    text-align: center;
    margin-bottom: 4rem;
}

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

.advantage-card {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: var(--shadow-sm);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.advantage-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.advantage-card h3 {
    font-size: 1.35rem;
    color: var(--primary);
    margin-bottom: 0.75rem;
    font-weight: 700;
}

.advantage-card p {
    color: var(--text-medium);
    line-height: 1.7;
}

/* Responsive for Solutions */
@media (max-width: 1200px) {
    .solutions-mega-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .solution-card-xl {
        grid-column: span 2;
    }
    
    .choose-us-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .solution-features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .solution-advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-stats-row {
        gap: 2rem;
    }
    
    .stat-value {
        font-size: 2.25rem;
    }
    
    .solution-header {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .solutions-hero {
        min-height: auto;
        padding: 100px 0 60px;
    }
    
    .hero-title {
        font-size: 2.25rem;
    }
    
    .hero-stats-row {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .solutions-mega-grid {
        grid-template-columns: 1fr;
    }
    
    .choose-us-grid {
        grid-template-columns: 1fr;
    }
    
    .solution-features-grid {
        grid-template-columns: 1fr;
    }
    
    .solution-advantages-grid {
        grid-template-columns: 1fr;
    }
    
    .industry-tags {
        gap: 0.75rem;
    }
    
    .industry-tag {
        padding: 0.75rem 1.5rem;
        font-size: 0.9rem;
    }
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .solutions-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

@media (max-width: 992px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 320px;
        height: 100vh;
        background: var(--bg-white);
        flex-direction: column;
        padding: 100px 40px 40px;
        gap: 1.5rem;
        box-shadow: var(--shadow-lg);
        transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 999;
    }

    .nav-menu.active {
        right: 0;
    }

    .mobile-menu-btn {
        display: flex;
        position: relative;
        z-index: 1000;
    }

    .hero-title {
        font-size: 3.5rem;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

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

/* 新闻详情页样式 */
.news-detail-section {
    padding: 5rem 0;
    background: var(--bg-white);
}

.news-detail-header {
    text-align: center;
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 2px solid var(--bg-light);
}

.news-detail-date {
    color: var(--primary);
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 1rem;
}

.news-detail-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.4;
    max-width: 900px;
    margin: 0 auto;
}

.news-detail-content {
    max-width: 900px;
    margin: 0 auto;
}

.news-detail-image {
    width: 100%;
    height: 400px;
    background: var(--bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 6rem;
    border-radius: 16px;
    margin-bottom: 3rem;
}

.news-detail-text {
    font-size: 1.1rem;
    line-height: 2;
    color: var(--text-medium);
}

.news-detail-text p {
    margin-bottom: 1.5rem;
}

.news-detail-text h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-dark);
    margin: 2.5rem 0 1rem;
}

.news-detail-text ul {
    margin: 1rem 0 1.5rem 2rem;
}

.news-detail-text li {
    margin-bottom: 0.75rem;
    list-style: disc;
}

.news-detail-footer {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid var(--bg-light);
    text-align: center;
}

@media (max-width: 768px) {
    .nav-container {
        padding: 0 20px;
    }

    .logo {
        left: 20px;
    }

    .logo h1 {
        font-size: 1.3rem;
    }

    .hero-title {
        font-size: 2.8rem;
    }

    .hero-subtitle {
        font-size: 1.3rem;
    }

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

    .btn {
        width: 100%;
        max-width: 300px;
    }

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

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .stat-number {
        font-size: 3.5rem;
    }

    .news-item {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .news-date {
        min-width: auto;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }

    .section-title {
        font-size: 2.2rem;
    }

    .back-to-top {
        right: 20px;
        bottom: 20px;
        width: 48px;
        height: 48px;
        font-size: 1.5rem;
    }
}

@media (max-width: 992px) {
    .solution-intro {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .solution-intro.reverse {
        direction: ltr;
    }

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

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

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

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

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

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

    .hero-subtitle {
        font-size: 1.2rem;
    }

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

    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }

    .stat-number {
        font-size: 2.5rem;
    }

    .news-item {
        flex-direction: column;
        gap: 1rem;
    }

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

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

    .footer-bottom {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }

    .page-hero h1 {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2.2rem;
    }

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

/* 动画类 */
.fade-in {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in-up {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in-left {
    opacity: 1;
    transform: translateX(0);
    transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in-right {
    opacity: 1;
    transform: translateX(0);
    transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.scale-in {
    opacity: 1;
    transform: scale(1);
    transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

@media (prefers-reduced-motion: no-preference) {
    .fade-in,
    .fade-in-up,
    .fade-in-left,
    .fade-in-right,
    .scale-in {
        opacity: 0;
    }
    .fade-in {
        transform: translateY(30px);
    }
    .fade-in-up {
        transform: translateY(50px);
    }
    .fade-in-left {
        transform: translateX(-50px);
    }
    .fade-in-right {
        transform: translateX(50px);
    }
    .scale-in {
        transform: scale(0.8);
    }
    .fade-in.visible,
    .fade-in-up.visible,
    .fade-in-left.visible,
    .fade-in-right.visible,
    .scale-in.visible {
        opacity: 1;
        transform: translateY(0) translateX(0) scale(1);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(0, 102, 169, 0.3);
    }
    50% {
        box-shadow: 0 0 40px rgba(0, 102, 169, 0.6);
    }
}

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

@keyframes gradient-shift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

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

@keyframes bounce-gentle {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-5px);
    }
}

.shimmer-effect {
    background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.4) 50%, transparent 100%);
    background-size: 200% 100%;
    animation: shimmer 2s infinite;
}

.gradient-animated {
    background-size: 200% 200%;
    animation: gradient-shift 8s ease infinite;
}

.float-animation {
    animation: float 3s ease-in-out infinite;
}

.pulse-glow-animation {
    animation: pulse-glow 2s ease-in-out infinite;
}

.rotate-animation {
    animation: rotate-slow 20s linear infinite;
}

/* 面包屑导航 */
.breadcrumb {
    padding: 120px 0 40px;
    background: #f8fafc;
}

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

.breadcrumb-list {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    font-size: 0.95rem;
}

.breadcrumb-list li {
    color: #666;
}

.breadcrumb-list li a {
    color: #0066A9;
    text-decoration: none;
    transition: color 0.3s ease;
}

.breadcrumb-list li a:hover {
    color: #199630;
}

.breadcrumb-list li:not(:last-child)::after {
    content: '/';
    margin-left: 0.5rem;
    color: #ccc;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 40px;
    right: 40px;
    width: 56px;
    height: 56px;
    background: var(--gradient-accent);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: white;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 999;
}

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

.back-to-top:hover {
    transform: translateY(-6px) scale(1.1);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
}