/* ===== 全局样式 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
    overflow-x: hidden;
}

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

/* ===== 通用组件样式 ===== */
.btn {
    display: inline-block;
    padding: 12px 30px;
    font-size: 16px;
    font-weight: 500;
    text-decoration: none;
    border-radius: 30px;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.btn-outline {
    background: transparent;
    color: #667eea;
    border: 2px solid #667eea;
}

.btn-outline:hover {
    background: #667eea;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

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

.section-title {
    font-size: 2.5rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 15px;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: #7f8c8d;
    max-width: 600px;
    margin: 0 auto;
}

/* ===== 头部导航 ===== */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.navbar {
    padding: 15px 0;
}

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

.nav-brand {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 600;
    color: #2c3e50;
    text-decoration: none;
}

/* 方形logo + 文字组合样式（备选） */
.nav-brand.logo-text {
    gap: 12px;
}

.nav-brand.logo-text .logo-square {
    height: 40px;
    width: 40px;
}

.nav-brand.logo-text .brand-text {
    font-size: 1.4rem;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo {
    height: 50px;
    width: auto;
    max-width: 103px; /* 50px * 2.06 ≈ 103px */
    object-fit: contain;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-link {
    color: #2c3e50;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: #667eea;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #667eea;
    transition: width 0.3s ease;
}

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

/* ===== 移动端汉堡菜单 ===== */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    padding: 15px;
    z-index: 1001;
    position: relative;
    background: none;
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.hamburger:hover {
    background: rgba(102, 126, 234, 0.1);
}

.hamburger span {
    display: block;
    width: 25px;
    height: 3px;
    background: #2c3e50;
    margin: 3px 0;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    border-radius: 2px;
    transform-origin: center;
}

/* 汉堡菜单动画 */
.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
    background: #667eea;
}

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

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
    background: #667eea;
}

/* ===== 移动端导航菜单 ===== */
.mobile-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.98) 0%, rgba(118, 75, 162, 0.98) 100%);
    backdrop-filter: blur(20px);
    z-index: 1000;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

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

.mobile-nav-menu {
    list-style: none;
    padding: 0;
    margin: 0;
}

.mobile-nav-menu li {
    margin: 20px 0;
    opacity: 0;
    transform: translateX(50px);
    transition: all 0.6s ease;
}

.mobile-nav.active .mobile-nav-menu li {
    opacity: 1;
    transform: translateX(0);
}

.mobile-nav.active .mobile-nav-menu li:nth-child(1) { transition-delay: 0.1s; }
.mobile-nav.active .mobile-nav-menu li:nth-child(2) { transition-delay: 0.2s; }
.mobile-nav.active .mobile-nav-menu li:nth-child(3) { transition-delay: 0.3s; }
.mobile-nav.active .mobile-nav-menu li:nth-child(4) { transition-delay: 0.4s; }
.mobile-nav.active .mobile-nav-menu li:nth-child(5) { transition-delay: 0.5s; }

.mobile-nav-link {
    color: white;
    text-decoration: none;
    font-size: 2rem;
    font-weight: 600;
    padding: 15px 30px;
    border-radius: 50px;
    transition: all 0.3s ease;
    display: block;
    position: relative;
    overflow: hidden;
}

.mobile-nav-link:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: scale(1.05);
}

.mobile-nav-link::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;
}

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

.mobile-nav-close {
    position: absolute;
    top: 30px;
    right: 30px;
    background: none;
    border: none;
    color: white;
    font-size: 2rem;
    cursor: pointer;
    padding: 10px;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.mobile-nav-close:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: rotate(90deg);
}

.mobile-nav-brand {
    position: absolute;
    top: 30px;
    left: 30px;
    color: white;
    font-size: 1.5rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    text-decoration: none;
}

.mobile-nav-brand img {
    height: 45px;
    width: auto;
    max-width: 93px; /* 45px * 2.06 ≈ 93px */
    object-fit: contain;
}

.mobile-nav-footer {
    position: absolute;
    bottom: 50px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
    text-align: center;
}



.mobile-nav-social {
    margin-top: 20px;
    display: flex;
    gap: 15px;
    justify-content: center;
}

.mobile-nav-social a {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.5rem;
    padding: 10px;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.mobile-nav-social a:hover {
    color: white;
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-3px);
}

/* 防止body滚动当菜单打开时 */
body.nav-open {
    overflow: hidden;
}

/* ===== 首页主横幅 ===== */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    z-index: -1;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-bg::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at 50% 50%, rgba(102, 126, 234, 0.3) 0%, transparent 70%);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.2);
    z-index: -1;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    padding: 0 20px;
}

.hero-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    padding: 10px 25px;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 30px;
    animation: fadeInUp 1s ease-out;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 25px;
    line-height: 1.2;
    background: linear-gradient(135deg, #ffffff 0%, rgba(255, 255, 255, 0.8) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-subtitle {
    font-size: 1.6rem;
    font-weight: 400;
    margin-bottom: 25px;
    opacity: 0.9;
    animation: fadeInUp 1s ease-out 0.4s both;
}

.hero-description {
    font-size: 1.2rem;
    margin-bottom: 50px;
    opacity: 0.8;
    line-height: 1.6;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 1s ease-out 0.6s both;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 60px;
    animation: fadeInUp 1s ease-out 0.8s both;
}

.hero-stats {
    display: flex;
    justify-content: space-around;
    max-width: 600px;
    margin: 0 auto 40px;
    animation: fadeInUp 1s ease-out 1s both;
}

.hero-stat {
    text-align: center;
    padding: 0 20px;
}

.hero-stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    display: block;
    margin-bottom: 5px;
}

.hero-stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: white;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    animation: bounce 2s infinite;
    cursor: pointer;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.scroll-indicator:hover {
    opacity: 1;
}

.scroll-indicator span {
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.scroll-indicator i {
    font-size: 1.5rem;
}

/* Hero浮动元素 */
.hero-floating-elements {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.floating-element {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

.floating-element:nth-child(1) {
    width: 80px;
    height: 80px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.floating-element:nth-child(2) {
    width: 120px;
    height: 120px;
    top: 60%;
    left: 80%;
    animation-delay: 2s;
}

.floating-element:nth-child(3) {
    width: 60px;
    height: 60px;
    top: 80%;
    left: 20%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
        opacity: 0.7;
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
        opacity: 1;
    }
}

/* ===== 服务展示 ===== */
.services {
    padding: 100px 0;
    background: #f8f9fa;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.service-card {
    background: white;
    padding: 40px 30px;
    border-radius: 15px;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
}

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

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

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
}

.service-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 15px;
}

.service-card p {
    color: #7f8c8d;
    margin-bottom: 20px;
    line-height: 1.6;
}

.service-link {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    transition: all 0.3s ease;
}

.service-link:hover {
    gap: 10px;
}

/* ===== 关于我们 ===== */
.about {
    padding: 120px 0;
    position: relative;
    overflow: hidden;
}

.about-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.03) 0%, rgba(255, 255, 255, 0.8) 100%);
    z-index: 1;
}

.about-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 200%;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.05) 0%, transparent 70%);
    transform: rotate(45deg);
}

.about .container {
    position: relative;
    z-index: 2;
}

.about-header {
    text-align: center;
    margin-bottom: 80px;
}

.about-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    padding: 8px 20px;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 20px;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.about-header h2 {
    font-size: 3rem;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 20px;
    line-height: 1.2;
}

.about-lead {
    font-size: 1.2rem;
    color: #7f8c8d;
    line-height: 1.6;
    max-width: 800px;
    margin: 0 auto;
}

.about-content {
    display: flex;
    flex-direction: column;
    gap: 80px;
}

.about-main {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-intro h3 {
    font-size: 1.8rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 20px;
}

.about-intro p {
    font-size: 1.1rem;
    color: #7f8c8d;
    line-height: 1.7;
    margin-bottom: 40px;
}

.about-values {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.value-item {
    display: flex;
    gap: 20px;
    padding: 25px;
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.value-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.value-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.value-icon i {
    font-size: 1.5rem;
    color: white;
}

.value-content h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 8px;
}

.value-content p {
    color: #7f8c8d;
    line-height: 1.6;
    font-size: 0.95rem;
}

.about-image {
    position: relative;
}

.image-wrapper {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.image-wrapper img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.3s ease;
    cursor: pointer;
}

.image-wrapper:hover .image-overlay {
    opacity: 1;
}

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

.play-button {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    transition: all 0.3s ease;
}

.play-button:hover {
    background: white;
    transform: scale(1.1);
}

.play-button i {
    font-size: 1.8rem;
    color: #667eea;
    margin-left: 3px;
}

.image-overlay p {
    color: white;
    font-weight: 600;
    font-size: 1.1rem;
}

.achievement-badges {
    position: absolute;
    bottom: -20px;
    right: 20px;
    display: flex;
    gap: 15px;
}

.badge-item {
    background: white;
    padding: 15px 20px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    min-width: 80px;
}

.badge-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: #667eea;
    margin-bottom: 5px;
}

.badge-text {
    font-size: 0.8rem;
    color: #7f8c8d;
    font-weight: 500;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    background: white;
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 1px solid rgba(102, 126, 234, 0.1);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
    border-color: rgba(102, 126, 234, 0.3);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    transition: all 0.3s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
}

.feature-icon i {
    font-size: 2rem;
    color: white;
}

.feature-card h4 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 15px;
}

.feature-card p {
    color: #7f8c8d;
    line-height: 1.6;
    font-size: 0.95rem;
}

/* ===== 统计数据 ===== */
.stats {
    padding: 80px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    text-align: center;
}

.stat-item {
    animation: fadeInUp 1s ease-out;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 10px;
    display: block;
}

.stat-label {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* ===== 博客预览 ===== */
.blog-preview {
    padding: 100px 0;
    background: #f8f9fa;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin: 40px 0 50px 0;
}

.blog-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.blog-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.2);
    border-color: rgba(102, 126, 234, 0.2);
}

.blog-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.blog-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.blog-content {
    padding: 30px 25px;
    position: relative;
}

.blog-meta {
    display: flex;
    gap: 20px;
    margin-bottom: 18px;
    font-size: 0.9rem;
    color: #7f8c8d;
    align-items: center;
}

.blog-category {
    color: #667eea;
    font-weight: 600;
    padding: 4px 12px;
    background: rgba(102, 126, 234, 0.1);
    border-radius: 15px;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.blog-date {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.85rem;
}

.blog-date i {
    color: #667eea;
}

.blog-read-time {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.85rem;
    color: #95a5a6;
}

.blog-read-time i {
    color: #95a5a6;
}

.blog-content h3 {
    font-size: 1.35rem;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 18px;
    line-height: 1.4;
    transition: color 0.3s ease;
}

.blog-card:hover .blog-content h3 {
    color: #667eea;
}

.blog-content p {
    color: #7f8c8d;
    margin-bottom: 25px;
    line-height: 1.7;
    font-size: 0.95rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-link {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.blog-link:hover {
    color: #764ba2;
    transform: translateX(5px);
}

.blog-link::after {
    content: '→';
    font-size: 1.1rem;
    transition: transform 0.3s ease;
}

.blog-link:hover::after {
    transform: translateX(3px);
}

.blog-more {
    text-align: center;
    margin-top: 50px;
}

.blog-more .btn {
    padding: 15px 35px;
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ===== 联系我们 ===== */
.contact {
    padding: 100px 0;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    flex-shrink: 0;
}

.contact-details h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 5px;
}

.contact-details p {
    color: #7f8c8d;
}

.contact-form {
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: 25px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
}

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

/* ===== 页脚 ===== */
.footer {
    background: #2c3e50;
    color: white;
    padding: 60px 0 20px;
}

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

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    height: 40px;
    margin-bottom: 15px;
}

.footer-brand p {
    margin-bottom: 10px;
    opacity: 0.8;
    line-height: 1.6;
}

.footer-section h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: #ecf0f1;
}

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

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

.footer-section ul li a {
    color: #bdc3c7;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #667eea;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: #34495e;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: #667eea;
    transform: translateY(-2px);
}

.footer-bottom {
    border-top: 1px solid #34495e;
    padding-top: 20px;
    text-align: center;
    opacity: 0.8;
}

.footer-bottom p {
    margin-bottom: 5px;
}

/* ===== 返回顶部按钮 ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
}

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

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

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

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

/* ===== 滚动效果 ===== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== 加载动画 ===== */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: white;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 1;
    visibility: visible;
    transition: all 0.5s ease;
}

.loading.hide {
    opacity: 0;
    visibility: hidden;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ===== 页面头部样式 (服务页面、博客页面等) ===== */
.page-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 120px 0 80px;
    text-align: center;
}

.page-header-content h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 15px;
}

.page-header-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    font-size: 1rem;
    opacity: 0.8;
}

.breadcrumb a {
    color: white;
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.breadcrumb a:hover {
    opacity: 1;
}

.breadcrumb span {
    color: rgba(255, 255, 255, 0.6);
}

/* ===== 服务详情页面样式 ===== */
.service-detail {
    padding: 80px 0;
}

.service-detail.alternate {
    background: #f8f9fa;
}

.service-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.service-icon-large {
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: white;
    margin-bottom: 30px;
}

.service-info h2 {
    font-size: 2.5rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 20px;
}

.service-intro {
    font-size: 1.2rem;
    color: #7f8c8d;
    line-height: 1.8;
    margin-bottom: 40px;
}

.service-features h3,
.service-process h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 20px;
}

.service-features ul {
    list-style: none;
    margin-bottom: 40px;
}

.service-features ul li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
    color: #2c3e50;
}

.service-features ul li i {
    color: #667eea;
    font-size: 1.1rem;
}

.process-steps {
    display: grid;
    gap: 20px;
}

.process-step {
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.step-number {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    flex-shrink: 0;
}

.step-content h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 5px;
}

.step-content p {
    color: #7f8c8d;
    line-height: 1.6;
}

.service-image img {
    width: 100%;
    border-radius: 15px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

/* ===== 服务包装样式 ===== */
.service-packages h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 30px;
}

.packages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.package-card {
    background: white;
    padding: 30px 20px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: all 0.3s ease;
}

.package-card.featured {
    border: 2px solid #667eea;
    transform: scale(1.05);
}

.package-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.package-card h4 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 10px;
}

.package-card > p {
    color: #7f8c8d;
    margin-bottom: 20px;
}

.package-features p {
    color: #555;
    margin-bottom: 8px;
    text-align: left;
}

/* ===== CTA区域样式 ===== */
.cta-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 80px 0;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.cta-content p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== 博客页面样式 ===== */
.blog-page-content {
    padding: 80px 0;
}

.blog-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
}

.blog-main {
    min-width: 0; /* 防止grid溢出 */
}

/* 特色文章样式 */
.featured-article {
    margin-bottom: 60px;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.featured-image {
    position: relative;
    height: 400px;
    overflow: hidden;
}

.featured-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.featured-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: white;
    padding: 40px;
}

.featured-category {
    background: #667eea;
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 15px;
    display: inline-block;
}

.featured-content h2 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 15px;
    line-height: 1.3;
}

.featured-content p {
    font-size: 1.1rem;
    margin-bottom: 20px;
    opacity: 0.9;
    line-height: 1.6;
}

.featured-link {
    color: white;
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: gap 0.3s ease;
}

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

/* 博客卡片增强样式 */
.blog-date-badge {
    position: absolute;
    top: 15px;
    left: 15px;
    background: white;
    color: #2c3e50;
    padding: 8px 12px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
}

.date-day {
    display: block;
    font-size: 1.2rem;
    font-weight: 700;
    line-height: 1;
}

.date-month {
    display: block;
    font-size: 0.8rem;
    opacity: 0.7;
}

.blog-meta {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
    font-size: 0.9rem;
    color: #7f8c8d;
    flex-wrap: wrap;
}

.blog-author {
    font-weight: 500;
}

.blog-read-time {
    opacity: 0.8;
}

.blog-tags {
    display: flex;
    gap: 8px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.tag {
    background: #f1f2f6;
    color: #2c3e50;
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    text-decoration: none;
    transition: all 0.3s ease;
}

.tag:hover {
    background: #667eea;
    color: white;
}

/* ===== 分页样式 ===== */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-top: 60px;
}

.page-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    color: #2c3e50;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.page-link:hover {
    border-color: #667eea;
    color: #667eea;
}

.page-link.active {
    background: #667eea;
    border-color: #667eea;
    color: white;
}

.page-link.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.page-dots {
    color: #7f8c8d;
    font-weight: 500;
}

/* ===== 侧边栏样式 ===== */
.blog-sidebar {
    min-width: 0;
}

.sidebar-widget {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
}

.sidebar-widget h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 20px;
}

/* 搜索表单 */
.search-form {
    display: flex;
    gap: 10px;
}

.search-form input {
    flex: 1;
    padding: 12px;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 14px;
}

.search-form button {
    padding: 12px 15px;
    background: #667eea;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.3s ease;
}

.search-form button:hover {
    background: #5a6fd8;
}

/* 分类列表 */
.category-list {
    list-style: none;
}

.category-list li {
    margin-bottom: 10px;
}

.category-list a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #2c3e50;
    text-decoration: none;
    padding: 8px 0;
    border-bottom: 1px solid #f1f2f6;
    transition: color 0.3s ease;
}

.category-list a:hover {
    color: #667eea;
}

.category-list span {
    background: #f1f2f6;
    color: #7f8c8d;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 0.8rem;
}

/* 热门文章 */
.popular-posts {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.popular-post {
    display: flex;
    gap: 15px;
}

.post-image {
    width: 80px;
    height: 60px;
    border-radius: 8px;
    overflow: hidden;
    flex-shrink: 0;
}

.post-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.post-content h4 {
    font-size: 1rem;
    font-weight: 500;
    line-height: 1.4;
    margin-bottom: 8px;
}

.post-content h4 a {
    color: #2c3e50;
    text-decoration: none;
    transition: color 0.3s ease;
}

.post-content h4 a:hover {
    color: #667eea;
}

.post-meta {
    display: flex;
    gap: 10px;
    font-size: 0.8rem;
    color: #7f8c8d;
}

/* 标签云 */
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

/* 邮件订阅 */
.newsletter-widget {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.newsletter-widget h3 {
    color: white;
}

.newsletter-widget p {
    margin-bottom: 20px;
    opacity: 0.9;
}

.newsletter-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.newsletter-form input {
    padding: 12px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
}

.newsletter-form .btn {
    background: white;
    color: #667eea;
}

.newsletter-form .btn:hover {
    background: #f8f9fa;
}

/* ===== 博客详情页面样式 ===== */
.article-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 120px 0 60px;
}

.article-meta {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.article-category {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 20px;
}

.article-title {
    font-size: 2.8rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 30px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.article-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.author-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.author-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 3px solid rgba(255, 255, 255, 0.3);
}

.author-details {
    display: flex;
    flex-direction: column;
    text-align: left;
}

.author-name {
    font-weight: 600;
    font-size: 1.1rem;
}

.author-title {
    font-size: 0.9rem;
    opacity: 0.8;
}

.article-stats {
    display: flex;
    gap: 20px;
    font-size: 0.9rem;
    opacity: 0.9;
}

.article-stats span {
    display: flex;
    align-items: center;
    gap: 5px;
}

/* 文章内容区域 */
.article-content {
    padding: 80px 0;
}

.article-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 60px;
}

.article-main {
    min-width: 0;
}

.article-image {
    margin-bottom: 40px;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.article-image img {
    width: 100%;
    height: auto;
    display: block;
}

.article-body {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #2c3e50;
}

.article-lead {
    font-size: 1.3rem;
    font-weight: 400;
    color: #34495e;
    margin-bottom: 40px;
    padding: 20px;
    background: #f8f9fa;
    border-left: 4px solid #667eea;
    border-radius: 0 8px 8px 0;
}

.article-body h2 {
    font-size: 2rem;
    font-weight: 600;
    color: #2c3e50;
    margin: 50px 0 20px 0;
    position: relative;
}

.article-body h2::before {
    content: '';
    position: absolute;
    left: -20px;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 30px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 2px;
}

.article-body h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #2c3e50;
    margin: 40px 0 15px 0;
}

.article-body p {
    margin-bottom: 20px;
}

.article-body ul, .article-body ol {
    margin: 20px 0;
    padding-left: 30px;
}

.article-body li {
    margin-bottom: 8px;
}

.article-body blockquote {
    background: #f8f9fa;
    border-left: 4px solid #667eea;
    margin: 30px 0;
    padding: 20px 30px;
    border-radius: 0 8px 8px 0;
    position: relative;
}

.article-body blockquote::before {
    content: '"';
    position: absolute;
    top: -10px;
    left: 15px;
    font-size: 4rem;
    color: #667eea;
    opacity: 0.3;
}

.article-body blockquote p {
    margin-bottom: 15px;
    font-style: italic;
    color: #555;
}

.article-body blockquote cite {
    display: block;
    text-align: right;
    font-size: 0.9rem;
    color: #7f8c8d;
    font-style: normal;
}

/* 代码块样式 */
.code-block {
    margin: 30px 0;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.code-block pre {
    margin: 0;
    padding: 0;
}

.code-block code {
    display: block;
    padding: 25px;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
    overflow-x: auto;
}

/* 信息框样式 */
.info-box {
    background: #e8f4fd;
    border: 1px solid #bee5eb;
    border-radius: 8px;
    padding: 20px;
    margin: 30px 0;
    position: relative;
}

.info-box h4 {
    color: #0c5460;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.info-box h4 i {
    color: #17a2b8;
}

.info-box p {
    color: #0c5460;
    margin: 0;
}

/* 特性网格 */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin: 30px 0;
}

.feature-item {
    text-align: center;
    padding: 30px 20px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-5px);
}

.feature-item i {
    font-size: 2.5rem;
    color: #667eea;
    margin-bottom: 15px;
}

.feature-item h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 10px;
}

.feature-item p {
    color: #7f8c8d;
}

/* 统计数据展示 */
.statistics {
    background: #f8f9fa;
    padding: 40px;
    border-radius: 15px;
    margin: 40px 0;
}

.statistics h3 {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 30px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 30px;
}

.result-item {
    text-align: center;
}

.result-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: #667eea;
    display: block;
    margin-bottom: 5px;
}

.result-label {
    font-size: 0.9rem;
    color: #7f8c8d;
}

/* 文章页脚 */
.article-footer {
    border-top: 1px solid #e9ecef;
    padding-top: 40px;
    margin-top: 50px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.article-tags h4, .article-share h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 15px;
}

.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.share-buttons {
    display: flex;
    gap: 15px;
}

.share-btn {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    font-size: 1.2rem;
    transition: all 0.3s ease;
}

.share-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.share-btn.wechat { background: #07c160; }
.share-btn.weibo { background: #e6162d; }
.share-btn.qq { background: #12b7f5; }
.share-btn.link { background: #6c757d; }

/* 作者简介 */
.author-bio {
    background: #f8f9fa;
    padding: 40px;
    border-radius: 15px;
    margin: 50px 0;
    display: flex;
    gap: 30px;
    align-items: flex-start;
}

.author-avatar-large {
    flex-shrink: 0;
}

.author-avatar-large img {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    border: 4px solid white;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.author-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 5px;
}

.author-position {
    color: #667eea;
    font-weight: 500;
    margin-bottom: 15px;
}

.author-content p {
    color: #7f8c8d;
    line-height: 1.6;
    margin-bottom: 20px;
}

.author-social {
    display: flex;
    gap: 15px;
}

.author-social a {
    width: 35px;
    height: 35px;
    background: #667eea;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all 0.3s ease;
}

.author-social a:hover {
    background: #5a6fd8;
    transform: translateY(-2px);
}

/* 相关文章 */
.related-articles {
    margin-top: 60px;
}

.related-articles h3 {
    font-size: 1.8rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 30px;
    text-align: center;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.related-article {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.related-article:hover {
    transform: translateY(-5px);
}

.related-image {
    height: 150px;
    overflow: hidden;
}

.related-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.related-article:hover .related-image img {
    transform: scale(1.05);
}

.related-content {
    padding: 20px;
}

.related-content h4 {
    font-size: 1.1rem;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 10px;
}

.related-content h4 a {
    color: #2c3e50;
    text-decoration: none;
    transition: color 0.3s ease;
}

.related-content h4 a:hover {
    color: #667eea;
}

.related-content p {
    color: #7f8c8d;
    font-size: 0.9rem;
    margin-bottom: 10px;
    line-height: 1.5;
}

.related-date {
    color: #adb5bd;
    font-size: 0.8rem;
}

/* 评论区域 */
.comments-section {
    margin-top: 60px;
    padding-top: 40px;
    border-top: 2px solid #e9ecef;
}

.comments-section h3 {
    font-size: 1.8rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 30px;
}

.comment-count {
    color: #667eea;
    font-weight: normal;
}

.comment-form {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 10px;
    margin-bottom: 40px;
}

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

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

.comment-form input,
.comment-form textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.comment-form input:focus,
.comment-form textarea:focus {
    outline: none;
    border-color: #667eea;
}

.comments-list {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.comment {
    display: flex;
    gap: 20px;
    padding: 20px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 3px 15px rgba(0, 0, 0, 0.05);
}

.comment-avatar {
    flex-shrink: 0;
}

.comment-avatar img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
}

.comment-content {
    flex: 1;
}

.comment-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.comment-header h4 {
    font-size: 1rem;
    font-weight: 600;
    color: #2c3e50;
}

.comment-date {
    font-size: 0.8rem;
    color: #adb5bd;
}

.comment-content p {
    color: #555;
    line-height: 1.6;
    margin-bottom: 15px;
}

.comment-reply {
    background: none;
    border: none;
    color: #667eea;
    font-size: 0.9rem;
    cursor: pointer;
    transition: color 0.3s ease;
}

.comment-reply:hover {
    color: #5a6fd8;
}

/* 文章侧边栏 */
.article-sidebar {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.toc-widget {
    background: #f8f9fa;
}

.table-of-contents {
    font-size: 0.9rem;
}

.table-of-contents ul {
    list-style: none;
    padding: 0;
}

.table-of-contents > ul > li {
    margin-bottom: 10px;
}

.table-of-contents a {
    color: #2c3e50;
    text-decoration: none;
    display: block;
    padding: 5px 0;
    border-bottom: 1px solid transparent;
    transition: all 0.3s ease;
}

.table-of-contents a:hover {
    color: #667eea;
    border-bottom-color: #667eea;
}

.table-of-contents ul ul {
    margin-left: 20px;
    margin-top: 5px;
}

.table-of-contents ul ul a {
    font-size: 0.85rem;
    color: #7f8c8d;
}

.contact-cta {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

.contact-cta h3 {
    color: white;
    margin-bottom: 15px;
}

.contact-cta p {
    margin-bottom: 20px;
    opacity: 0.9;
}

.contact-cta .btn {
    background: white;
    color: #667eea;
}

.contact-cta .btn:hover {
    background: #f8f9fa;
    transform: translateY(-2px);
}

/* ===== 服务页面特殊样式 ===== */

/* SEO服务样式 */
.seo-services h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 30px;
}

.seo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
}

.seo-item {
    background: white;
    padding: 30px 20px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: transform 0.3s ease;
}

.seo-item:hover {
    transform: translateY(-5px);
}

.seo-item i {
    font-size: 2.5rem;
    color: #667eea;
    margin-bottom: 15px;
}

.seo-item h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 10px;
}

.seo-item p {
    color: #7f8c8d;
    font-size: 0.9rem;
    line-height: 1.5;
}

.seo-results h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 30px;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 30px;
}

/* AI服务标签页 */
.ai-solutions h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 30px;
}

.ai-tabs {
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.tab-buttons {
    display: flex;
    background: #f8f9fa;
    border-bottom: 1px solid #e9ecef;
}

.tab-btn {
    flex: 1;
    padding: 15px 20px;
    background: none;
    border: none;
    font-size: 1rem;
    font-weight: 500;
    color: #7f8c8d;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tab-btn.active,
.tab-btn:hover {
    color: #667eea;
    background: white;
}

.tab-content {
    padding: 30px;
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
}

.tab-panel h4 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 15px;
}

.tab-panel p {
    color: #7f8c8d;
    line-height: 1.6;
    margin-bottom: 20px;
}

.tab-panel ul {
    list-style: none;
    padding: 0;
}

.tab-panel ul li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    color: #2c3e50;
}

.tab-panel ul li::before {
    content: '✓';
    color: #667eea;
    font-weight: bold;
    width: 20px;
    text-align: center;
}

/* 跨境电商服务 */
.ecommerce-services h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 30px;
}

.ecommerce-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
}

.ecommerce-card {
    background: white;
    padding: 30px 20px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: transform 0.3s ease;
}

.ecommerce-card:hover {
    transform: translateY(-5px);
}

.ecommerce-card i {
    font-size: 2.5rem;
    color: #667eea;
    margin-bottom: 15px;
}

.ecommerce-card h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 10px;
}

.ecommerce-card p {
    color: #7f8c8d;
    font-size: 0.9rem;
    line-height: 1.5;
}

.platform-support h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 20px;
}

.platforms {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.platform-item {
    background: #f8f9fa;
    color: #2c3e50;
    padding: 10px 20px;
    border-radius: 25px;
    font-weight: 500;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.platform-item:hover {
    background: #667eea;
    color: white;
    border-color: #667eea;
}

/* 设计服务 */
.design-services h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 30px;
}

.design-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.design-category {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.design-category h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.design-category h4 i {
    color: #667eea;
}

.design-category ul {
    list-style: none;
    padding: 0;
}

.design-category ul li {
    color: #7f8c8d;
    margin-bottom: 8px;
    position: relative;
    padding-left: 20px;
}

.design-category ul li::before {
    content: '•';
    color: #667eea;
    position: absolute;
    left: 0;
}

.design-process h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 30px;
}

.design-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

.design-step {
    text-align: center;
    padding: 30px 20px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.design-step:hover {
    transform: translateY(-5px);
}

.step-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
    font-size: 1.5rem;
    color: white;
}

.design-step h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 10px;
}

     .design-step p {
         color: #7f8c8d;
         font-size: 0.9rem;
         line-height: 1.5;
     }

/* ===== 代码高亮样式 ===== */
.code-block {
    background: #282c34;
    color: #abb2bf;
    border-radius: 8px;
    margin: 20px 0;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

.code-block code {
    display: block;
    padding: 20px;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
    overflow-x: auto;
    white-space: pre;
}

.code-block .comment {
    color: #5c6370;
    font-style: italic;
}

.code-block .keyword {
    color: #c678dd;
    font-weight: bold;
}

.code-block .string {
    color: #98c379;
}

.code-block .line-number {
    color: #4b5263;
    margin-right: 15px;
    user-select: none;
}

/* ===== 阅读进度条样式 ===== */
.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: rgba(102, 126, 234, 0.1);
    z-index: 1001;
}

.reading-progress-bar {
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    width: 0%;
    transition: width 0.3s ease;
}

/* ===== 通知组件样式增强 ===== */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    max-width: 400px;
    background: white;
    padding: 16px 20px;
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    opacity: 0;
    transform: translateX(100%);
    transition: all 0.3s ease;
    border-left: 4px solid #667eea;
}

.notification.success {
    border-left-color: #10b981;
}

.notification.error {
    border-left-color: #ef4444;
}

.notification.warning {
    border-left-color: #f59e0b;
}

.notification-content {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.notification-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    margin-top: 2px;
}

.notification-icon.success {
    color: #10b981;
}

.notification-icon.error {
    color: #ef4444;
}

.notification-icon.warning {
    color: #f59e0b;
}

.notification-icon.info {
    color: #667eea;
}

.notification-message {
    flex: 1;
    font-size: 0.9rem;
    line-height: 1.4;
    color: #374151;
    white-space: pre-line;
}

.notification-close {
    background: none;
    border: none;
    color: #9ca3af;
    cursor: pointer;
    font-size: 1.2rem;
    line-height: 1;
    padding: 0;
    margin-left: 8px;
}

.notification-close:hover {
    color: #6b7280;
}