/* ==========================================
   深圳市弘文品牌营销策划有限公司 - 官网样式
   科技商务风格 - 深海蓝 + 活力橙
   ========================================== */

/* CSS变量定义 - 高端商务风格 */
:root {
    /* 主色调 - 基于logo的金色和深灰色 */
    --primary-color: #2c3e50;        /* 深灰蓝 */
    --secondary-color: #c9a961;      /* 金色 */
    --gold-light: #d4af37;           /* 浅金色 */
    --gold-dark: #b8941f;            /* 深金色 */
    --accent-color: #8b7355;         /* 古铜色 */

    /* 渐变色 */
    --gradient-gold: linear-gradient(135deg, #f4e4c1 0%, #d4af37 50%, #b8941f 100%);
    --gradient-dark: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    --gradient-overlay: linear-gradient(135deg, rgba(201, 169, 97, 0.1) 0%, rgba(184, 148, 31, 0.05) 100%);

    /* 中性色 */
    --text-primary: #1a1a1a;
    --text-secondary: #5a5a5a;
    --text-light: #8a8a8a;
    --bg-white: #ffffff;
    --bg-light: #f9f9f9;
    --bg-lighter: #fafafa;
    --bg-dark: #2c3e50;
    --bg-gold: #faf8f3;

    /* 边框和阴影 - 更精致的阴影效果 */
    --border-color: #e8e8e8;
    --border-gold: rgba(201, 169, 97, 0.3);
    --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);
    --shadow-gold: 0 4px 20px rgba(201, 169, 97, 0.25);
    --shadow-inset: inset 0 1px 3px rgba(0, 0, 0, 0.05);

    /* 间距 */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 48px;
    --spacing-xl: 80px;
    --spacing-2xl: 120px;

    /* 字体 - 更优雅的字体栈 */
    --font-family: "Helvetica Neue", -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "微软雅黑", sans-serif;
    --font-family-heading: "Georgia", "Times New Roman", "Noto Serif SC", serif;
    --font-size-base: 16px;
    --font-size-sm: 14px;
    --font-size-lg: 18px;
    --font-size-xl: 24px;
    --font-size-2xl: 36px;
    --font-size-3xl: 52px;

    /* 过渡 */
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.2s ease;
}

/* 全局重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

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

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

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

a:hover {
    color: var(--secondary-color);
}

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

/* 列表 */
ul, ol {
    list-style: none;
}

/* 按钮基础样式 */
button {
    font-family: var(--font-family);
    cursor: pointer;
    border: none;
    outline: none;
    transition: var(--transition);
}

/* ==========================================
   导航栏 - 高端商务风格
   ========================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(201, 169, 97, 0.1);
    z-index: 1000;
    transition: var(--transition);
    border-bottom: 1px solid rgba(201, 169, 97, 0.08);
}

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

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 90px;
}

.logo {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 16px;
    cursor: pointer;
    transition: var(--transition);
}

.logo:hover {
    transform: translateY(-2px);
}

.logo-img {
    height: 50px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 2px 8px rgba(201, 169, 97, 0.2));
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo h1 {
    font-size: 32px;
    font-weight: 700;
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 6px;
    font-family: var(--font-family-heading);
    letter-spacing: 1px;
}

.logo-subtitle {
    font-size: 11px;
    color: var(--text-secondary);
    letter-spacing: 3px;
    font-weight: 500;
    text-transform: uppercase;
}

.nav-menu {
    display: flex;
    gap: 48px;
    align-items: center;
}

.nav-menu li a {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-primary);
    padding: 10px 0;
    position: relative;
    letter-spacing: 0.5px;
    transition: var(--transition);
}

.nav-menu li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--gradient-gold);
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-menu li a:hover {
    color: var(--secondary-color);
}

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

.nav-menu li a.active {
    color: var(--secondary-color);
    font-weight: 600;
}

/* 汉堡菜单 */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    padding: 10px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
    transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

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

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(8px, -8px);
}

/* ==========================================
   按钮样式 - 高端商务风格
   ========================================== */
.btn {
    display: inline-block;
    padding: 16px 40px;
    font-size: 15px;
    font-weight: 600;
    border-radius: 6px;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
    letter-spacing: 0.5px;
    position: relative;
    overflow: hidden;
}

.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: var(--gradient-gold);
    color: white;
    box-shadow: var(--shadow-gold);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 30px rgba(201, 169, 97, 0.4);
}

.btn-secondary {
    background: var(--gradient-dark);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    color: white;
    border-color: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(10px);
}

.btn-outline:hover {
    background: white;
    color: var(--primary-color);
    border-color: white;
}

.btn-light {
    background: white;
    color: var(--primary-color);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-gold);
}

.btn-light:hover {
    background: var(--bg-gold);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--secondary-color);
}

.btn-large {
    padding: 18px 56px;
    font-size: 17px;
}

/* ==========================================
   首屏 Hero - 高端商务风格
   ========================================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    margin-top: 90px;
    overflow: hidden;
}

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

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1.2s cubic-bezier(0.4, 0, 0.2, 1);
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 50%, #2c3e50 100%);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.hero-slide.active {
    opacity: 1;
}

/* 轮播背景图片 */
.hero-slide-1 {
    background-image: linear-gradient(135deg, rgba(44, 62, 80, 0.75) 0%, rgba(52, 73, 94, 0.65) 100%), url('../images/banner1.jpg');
}

.hero-slide-2 {
    background-image: linear-gradient(135deg, rgba(44, 62, 80, 0.75) 0%, rgba(52, 73, 94, 0.65) 100%), url('../images/banner2.jpg');
}

.hero-slide-3 {
    background-image: linear-gradient(135deg, rgba(44, 62, 80, 0.75) 0%, rgba(52, 73, 94, 0.65) 100%), url('../images/banner3.jpg');
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 20% 30%, rgba(201, 169, 97, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 80% 70%, rgba(212, 175, 55, 0.06) 0%, transparent 40%),
        linear-gradient(135deg, rgba(201, 169, 97, 0.03) 0%, transparent 50%);
}

.hero-content {
    position: relative;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    z-index: 2;
}

.hero-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: white;
    margin-bottom: 20px;
    animation: fadeInUp 1s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: var(--font-family-heading);
    line-height: 1.2;
    letter-spacing: 1px;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 28px;
    animation: fadeInUp 1s cubic-bezier(0.4, 0, 0.2, 1) 0.2s both;
    letter-spacing: 0.5px;
}

.hero-description {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 48px;
    animation: fadeInUp 1s cubic-bezier(0.4, 0, 0.2, 1) 0.4s both;
    line-height: 1.8;
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: 24px;
    animation: fadeInUp 1s cubic-bezier(0.4, 0, 0.2, 1) 0.6s both;
}

.hero-indicators {
    position: absolute;
    bottom: 50px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 16px;
    z-index: 3;
}

.indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.25);
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid rgba(255, 255, 255, 0.4);
}

.indicator.active {
    background: var(--gradient-gold);
    width: 40px;
    border-radius: 5px;
    border-color: var(--gold-light);
    box-shadow: 0 0 15px rgba(201, 169, 97, 0.5);
}

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

/* ==========================================
   区块标题 - 高端商务风格
   ========================================== */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.section-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
    font-family: var(--font-family-heading);
    letter-spacing: 0.5px;
}

.section-title::before {
    content: '';
    position: absolute;
    top: 50%;
    left: -80px;
    width: 60px;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--border-gold));
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: var(--gradient-gold);
    border-radius: 2px;
    box-shadow: 0 2px 8px rgba(201, 169, 97, 0.3);
}

.section-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin-top: 28px;
    line-height: 1.8;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.section-footer {
    text-align: center;
    margin-top: var(--spacing-lg);
}

/* ==========================================
   核心业务概览 - 高端商务风格
   ========================================== */
.services-overview {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-gold);
    position: relative;
}

.services-overview::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--border-gold), transparent);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
}

.service-card {
    background: white;
    padding: 48px 36px;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    text-align: center;
    position: relative;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-gold);
    transform: scaleX(0);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-gold);
}

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 28px;
    color: var(--secondary-color);
    transition: var(--transition);
    filter: drop-shadow(0 4px 12px rgba(201, 169, 97, 0.2));
}

.service-card:hover .service-icon {
    transform: scale(1.15) rotate(5deg);
}

.service-icon svg {
    width: 100%;
    height: 100%;
}

.service-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 18px;
    font-family: var(--font-family-heading);
    letter-spacing: 0.3px;
}

.service-description {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 28px;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--secondary-color);
    font-weight: 600;
    font-size: 15px;
    transition: var(--transition);
    position: relative;
}

.service-link::after {
    content: '→';
    transition: transform 0.3s ease;
}

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

.service-link:hover::after {
    transform: translateX(4px);
}

/* ==========================================
   优势陈列 - 高端商务风格
   ========================================== */
.advantages {
    padding: var(--spacing-2xl) 0;
    background: white;
    position: relative;
}

.advantages::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--border-gold), transparent);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 56px;
}

.advantage-item {
    position: relative;
    padding-left: 90px;
    padding-top: 8px;
}

.advantage-number {
    position: absolute;
    left: 0;
    top: 0;
    font-size: 64px;
    font-weight: 700;
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.15;
    line-height: 1;
    font-family: var(--font-family-heading);
}

.advantage-item h3 {
    font-size: 21px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 14px;
    font-family: var(--font-family-heading);
    letter-spacing: 0.3px;
}

.advantage-item p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.9;
}

/* ==========================================
   成功案例预览 - 高端商务风格
   ========================================== */
.cases-preview {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-gold);
    position: relative;
}

.cases-preview::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--border-gold), transparent);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
}

.case-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.case-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-gold);
}

.case-image {
    position: relative;
    height: 220px;
    overflow: hidden;
}

.case-placeholder {
    width: 100%;
    height: 100%;
    background: var(--gradient-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
    font-weight: 600;
    position: relative;
}

.case-placeholder::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-overlay);
}

.case-content {
    padding: 28px;
}

.case-content h3 {
    font-size: 19px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 14px;
    line-height: 1.4;
    font-family: var(--font-family-heading);
}

.case-content p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
}

.case-tag {
    display: inline-block;
    padding: 7px 18px;
    background: linear-gradient(135deg, rgba(201, 169, 97, 0.08) 0%, rgba(212, 175, 55, 0.12) 100%);
    color: var(--secondary-color);
    font-size: 13px;
    font-weight: 600;
    border-radius: 20px;
    border: 1px solid var(--border-gold);
}

/* ==========================================
   CTA 区域 - 高端商务风格
   ========================================== */
.cta {
    padding: var(--spacing-2xl) 0;
    background: var(--gradient-dark);
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(201, 169, 97, 0.12) 0%, transparent 60%);
    border-radius: 50%;
}

.cta::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.08) 0%, transparent 60%);
    border-radius: 50%;
}

.cta-content {
    text-align: center;
    position: relative;
    z-index: 2;
}

.cta-content h2 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: white;
    margin-bottom: 20px;
    font-family: var(--font-family-heading);
    letter-spacing: 0.5px;
}

.cta-content p {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 48px;
    line-height: 1.8;
}

.cta-buttons {
    display: flex;
    gap: 24px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ==========================================
   页面标题 - 高端商务风格
   ========================================== */
.page-header {
    padding: 140px 0 70px;
    background: var(--gradient-dark);
    text-align: center;
    margin-top: 90px;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-overlay);
}

.page-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: white;
    margin-bottom: 20px;
    font-family: var(--font-family-heading);
    letter-spacing: 1px;
    position: relative;
    z-index: 2;
}

.page-subtitle {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.85);
    position: relative;
    z-index: 2;
    line-height: 1.8;
}

/* ==========================================
   服务详情页
   ========================================== */
.service-detail {
    padding: var(--spacing-xl) 0;
}

.service-detail.alt {
    background: var(--bg-light);
}

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

.service-detail-content.reverse {
    direction: rtl;
}

.service-detail-content.reverse > * {
    direction: ltr;
}

.service-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(255, 107, 53, 0.1);
    color: var(--secondary-color);
    font-size: 14px;
    font-weight: 600;
    border-radius: 20px;
    margin-bottom: 20px;
}

.service-intro {
    font-size: 17px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 32px;
}

.service-features {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.feature-item h4 {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 16px;
}

.feature-item ul {
    list-style: none;
    padding: 0;
}

.feature-item ul li {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 2;
    padding-left: 24px;
    position: relative;
}

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

.service-detail-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.visual-placeholder {
    width: 100%;
    max-width: 400px;
    aspect-ratio: 1;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.visual-placeholder svg {
    width: 100%;
    height: 100%;
}

/* ==========================================
   服务流程
   ========================================== */
.process {
    padding: var(--spacing-xl) 0;
    background: white;
}

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

.process-step {
    flex: 1;
    min-width: 150px;
    text-align: center;
}

.step-number {
    width: 60px;
    height: 60px;
    margin: 0 auto 16px;
    background: var(--secondary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
}

.process-step h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.process-step p {
    font-size: 14px;
    color: var(--text-secondary);
}

.process-arrow {
    font-size: 24px;
    color: var(--secondary-color);
    font-weight: 700;
}

/* ==========================================
   关于页面
   ========================================== */
.about-intro {
    padding: var(--spacing-xl) 0;
    background: white;
}

.about-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
}

.about-image {
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-placeholder {
    width: 100%;
    max-width: 400px;
    aspect-ratio: 4/3;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-placeholder svg {
    width: 100%;
    height: 100%;
}

/* 时间线 */
.timeline {
    padding: var(--spacing-xl) 0;
    background: var(--bg-light);
}

.timeline-content {
    position: relative;
    padding: 40px 0;
}

.timeline-content::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-color);
    transform: translateX(-50%);
}

.timeline-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
    position: relative;
}

.timeline-item:nth-child(even) .timeline-year {
    order: 2;
    text-align: left;
}

.timeline-item:nth-child(even) .timeline-card {
    order: 1;
}

.timeline-year {
    text-align: right;
    font-size: 32px;
    font-weight: 700;
    color: var(--secondary-color);
    padding-top: 20px;
}

.timeline-card {
    background: white;
    padding: 32px;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    position: relative;
}

.timeline-card::before {
    content: '';
    position: absolute;
    top: 32px;
    width: 16px;
    height: 16px;
    background: var(--secondary-color);
    border-radius: 50%;
    border: 4px solid white;
    box-shadow: 0 0 0 2px var(--secondary-color);
}

.timeline-item:nth-child(odd) .timeline-card::before {
    right: -38px;
}

.timeline-item:nth-child(even) .timeline-card::before {
    left: -38px;
}

.timeline-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 12px;
}

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

/* ==========================================
   企业文化
   ========================================== */
.culture {
    padding: var(--spacing-xl) 0;
    background: white;
}

.culture-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.culture-card {
    text-align: center;
    padding: 40px 24px;
}

.culture-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    color: var(--secondary-color);
}

.culture-icon svg {
    width: 100%;
    height: 100%;
}

.culture-card h3 {
    font-size: 22px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 16px;
}

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

/* 核心价值 */
.core-values {
    padding: var(--spacing-xl) 0;
    background: var(--primary-color);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
}

.value-item {
    text-align: center;
    padding: 32px 24px;
}

.value-number {
    font-size: 48px;
    font-weight: 700;
    color: var(--secondary-color);
    opacity: 0.3;
    line-height: 1;
    margin-bottom: 16px;
}

.value-item h3 {
    font-size: 20px;
    font-weight: 600;
    color: white;
    margin-bottom: 12px;
}

.value-item p {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
}

/* ==========================================
   资质荣誉
   ========================================== */
.honors {
    padding: var(--spacing-xl) 0;
    background: var(--bg-light);
}

.honors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 32px;
}

.honor-card {
    background: white;
    padding: 40px 24px;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.honor-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    color: var(--primary-color);
}

.honor-icon svg {
    width: 100%;
    height: 100%;
}

.honor-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.honor-card p {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ==========================================
   案例页面
   ========================================== */
.case-filter {
    padding: 40px 0;
    background: white;
}

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

.filter-btn {
    padding: 14px 36px;
    background: white;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    transition: var(--transition);
    letter-spacing: 0.3px;
}

.filter-btn:hover {
    border-color: var(--secondary-color);
    color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.filter-btn.active {
    background: var(--gradient-gold);
    color: white;
    border-color: transparent;
    box-shadow: var(--shadow-gold);
}

.cases-list {
    padding: var(--spacing-xl) 0;
    background: var(--bg-light);
}

.case-detail-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    margin-bottom: 40px;
}

.case-detail-image {
    height: 300px;
}

.case-detail-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color) 0%, #0d3a5f 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 28px;
    font-weight: 600;
}

.case-detail-content {
    padding: 48px;
}

.case-meta {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
}

.case-industry {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(10, 37, 64, 0.1);
    color: var(--primary-color);
    font-size: 13px;
    font-weight: 600;
    border-radius: 20px;
}

.case-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 32px;
}

.case-section {
    margin-bottom: 32px;
}

.case-section h4 {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 16px;
    padding-left: 16px;
    border-left: 4px solid var(--secondary-color);
}

.case-section ul {
    list-style: none;
    padding: 0;
}

.case-section ul li {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 2;
    padding-left: 24px;
    position: relative;
}

.case-section ul li::before {
    content: '•';
    position: absolute;
    left: 8px;
    color: var(--secondary-color);
    font-weight: 700;
}

.case-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 32px;
    margin-top: 24px;
}

.stat-item {
    text-align: center;
    padding: 24px;
    background: var(--bg-light);
    border-radius: 12px;
}

.stat-value {
    display: block;
    font-size: 36px;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 8px;
}

.stat-label {
    display: block;
    font-size: 14px;
    color: var(--text-secondary);
}

/* ==========================================
   新闻页面 - 高端商务风格
   ========================================== */
.news-section {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-gold);
    position: relative;
}

.news-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--border-gold), transparent);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 40px;
}

.news-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.news-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-gold);
}

.news-image {
    position: relative;
    height: 240px;
}

.news-placeholder {
    width: 100%;
    height: 100%;
    background: var(--gradient-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
    font-weight: 600;
    position: relative;
}

.news-placeholder::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-overlay);
}

.news-category {
    position: absolute;
    top: 20px;
    right: 20px;
    padding: 8px 20px;
    background: var(--gradient-gold);
    color: white;
    font-size: 13px;
    font-weight: 600;
    border-radius: 20px;
    box-shadow: var(--shadow-gold);
    z-index: 2;
}

.news-content {
    padding: 28px;
}

.news-meta {
    display: flex;
    gap: 16px;
    margin-bottom: 14px;
}

.news-date {
    font-size: 13px;
    color: var(--text-light);
    font-weight: 500;
}

.news-title {
    font-size: 19px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 14px;
    line-height: 1.5;
    font-family: var(--font-family-heading);
}

.news-excerpt {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 20px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--secondary-color);
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition);
}

.news-link::after {
    content: '→';
    transition: transform 0.3s ease;
}

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

.news-link:hover::after {
    transform: translateX(4px);
}

.pagination {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-top: 56px;
}

.page-btn {
    padding: 12px 24px;
    background: white;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    transition: var(--transition);
    letter-spacing: 0.3px;
}

.page-btn:hover {
    border-color: var(--secondary-color);
    color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.page-btn.active {
    background: var(--gradient-gold);
    color: white;
    border-color: transparent;
    box-shadow: var(--shadow-gold);
}

/* ==========================================
   联系页面 - 高端商务风格
   ========================================== */
.contact-info-section {
    padding: var(--spacing-2xl) 0;
    background: white;
    position: relative;
}

.contact-info-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--border-gold), transparent);
}

.contact-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 40px;
}

.contact-info-card {
    text-align: center;
    padding: 48px 28px;
    background: var(--bg-gold);
    border-radius: 12px;
    transition: var(--transition);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.contact-info-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-gold);
    transform: scaleX(0);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.contact-info-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-gold);
    background: white;
}

.contact-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 24px;
    color: var(--secondary-color);
    filter: drop-shadow(0 4px 12px rgba(201, 169, 97, 0.2));
    transition: var(--transition);
}

.contact-info-card:hover .contact-icon {
    transform: scale(1.15);
}

.contact-icon svg {
    width: 100%;
    height: 100%;
}

.contact-info-card h3 {
    font-size: 19px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 14px;
    font-family: var(--font-family-heading);
}

.contact-value {
    font-size: 21px;
    font-weight: 700;
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

.contact-value a {
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.contact-desc {
    font-size: 14px;
    color: var(--text-secondary);
}

/* 联系表单 - 高端商务风格 */
.contact-form-section {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-gold);
}

.contact-form-wrapper {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    padding: 56px;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-gold);
}

.contact-form-header {
    text-align: center;
    margin-bottom: 48px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 28px;
    margin-bottom: 28px;
}

.form-group {
    margin-bottom: 28px;
}

.form-group label {
    display: block;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
    letter-spacing: 0.3px;
}

.required {
    color: var(--secondary-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 16px 18px;
    font-size: 15px;
    color: var(--text-primary);
    background: var(--bg-lighter);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    transition: var(--transition);
    font-family: var(--font-family);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    background: white;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(201, 169, 97, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 140px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--text-secondary);
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    cursor: pointer;
}

.checkbox-label a {
    color: var(--secondary-color);
    text-decoration: underline;
}

/* 地图 */
.map-section {
    padding: var(--spacing-xl) 0;
    background: white;
}

.map-container {
    margin-top: 40px;
}

.map-placeholder {
    width: 100%;
    height: 400px;
    background: var(--bg-light);
    border-radius: 16px;
    overflow: hidden;
    position: relative;
}

.map-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: rgba(10, 37, 64, 0.9);
    color: white;
    text-align: center;
    padding: 40px;
}

.map-overlay svg {
    width: 200px;
    height: 200px;
    margin-bottom: 20px;
}

.map-overlay p {
    font-size: 16px;
    margin-bottom: 20px;
}

/* FAQ */
.faq-section {
    padding: var(--spacing-xl) 0;
    background: var(--bg-light);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    border-radius: 12px;
    margin-bottom: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px;
    cursor: pointer;
    transition: var(--transition);
}

.faq-question:hover {
    background: var(--bg-light);
}

.faq-question h4 {
    font-size: 17px;
    font-weight: 600;
    color: var(--primary-color);
}

.faq-icon {
    font-size: 24px;
    color: var(--secondary-color);
    font-weight: 700;
    transition: var(--transition);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 24px 24px;
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ==========================================
   底部 - 高端商务风格
   ========================================== */
.footer {
    padding: 80px 0 40px;
    background: var(--gradient-dark);
    color: white;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(to right, transparent, rgba(201, 169, 97, 0.3), transparent);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 56px;
    margin-bottom: 48px;
}

.footer-col h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 20px;
    font-family: var(--font-family-heading);
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-col h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
    color: rgba(255, 255, 255, 0.9);
}

.footer-description {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.65);
    line-height: 1.9;
}

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

.footer-links li {
    margin-bottom: 14px;
}

.footer-links a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.65);
    transition: var(--transition);
    display: inline-block;
}

.footer-links a:hover {
    color: var(--secondary-color);
    transform: translateX(4px);
}

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

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 18px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.65);
}

.footer-contact svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    margin-top: 2px;
    color: var(--secondary-color);
}

.footer-contact a {
    color: rgba(255, 255, 255, 0.65);
    transition: var(--transition);
}

.footer-contact a:hover {
    color: var(--secondary-color);
}

.footer-bottom {
    padding-top: 36px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    text-align: center;
}

.footer-bottom p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.45);
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.45);
    text-decoration: none;
}

.footer-bottom a:hover {
    color: rgba(255, 255, 255, 0.75);
}

/* ==========================================
   浮动按钮 - 高端商务风格
   ========================================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 56px;
    height: 56px;
    background: var(--gradient-gold);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-gold);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    border: 2px solid rgba(255, 255, 255, 0.2);
}

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

.back-to-top:hover {
    transform: translateY(-6px);
    box-shadow: 0 8px 35px rgba(201, 169, 97, 0.5);
}

.back-to-top svg {
    width: 24px;
    height: 24px;
}

.floating-contact {
    position: fixed;
    bottom: 100px;
    right: 30px;
    z-index: 999;
}

.floating-btn {
    width: 64px;
    height: 64px;
    background: var(--gradient-dark);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    border: 2px solid rgba(201, 169, 97, 0.2);
}

.floating-btn:hover {
    transform: scale(1.15);
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.2);
    border-color: var(--secondary-color);
}

.floating-btn svg {
    width: 32px;
    height: 32px;
}

/* ==========================================
   响应式设计
   ========================================== */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 40px;
    }
    
    .hero-subtitle {
        font-size: 28px;
    }
    
    .service-detail-content,
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
    
    .timeline-content::before {
        left: 30px;
    }
    
    .timeline-item {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .timeline-year {
        text-align: left;
        padding-left: 60px;
    }
    
    .timeline-item:nth-child(even) .timeline-year {
        order: 0;
        text-align: left;
    }
    
    .timeline-item:nth-child(even) .timeline-card {
        order: 1;
    }
    
    .timeline-card::before {
        left: -38px !important;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: white;
        flex-direction: column;
        padding: 40px 20px;
        gap: 20px;
        transition: left 0.3s ease;
        box-shadow: var(--shadow-md);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero {
        min-height: 500px;
    }
    
    .hero-title {
        font-size: 32px;
    }
    
    .hero-subtitle {
        font-size: 24px;
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-buttons .btn {
        width: 100%;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .services-grid,
    .cases-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .process-steps {
        flex-direction: column;
    }
    
    .process-arrow {
        transform: rotate(90deg);
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .contact-form-wrapper {
        padding: 32px 24px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .cta-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .cta-buttons .btn {
        width: 100%;
    }
    
    .case-detail-content {
        padding: 32px 24px;
    }
    
    .case-title {
        font-size: 24px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .hero-subtitle {
        font-size: 20px;
    }
    
    .page-title {
        font-size: 32px;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .back-to-top,
    .floating-contact {
        right: 20px;
    }
    
    .floating-contact {
        bottom: 80px;
    }
}