/**
 * 楹进集团官网 - 黑金风格样式表
 * 大气、高端、现代设计
 */

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

:root {
    --gold-primary: #D4AF37;
    --gold-light: #F4E4BC;
    --gold-dark: #B8860B;
    --gold-gradient: linear-gradient(135deg, #D4AF37 0%, #F4E4BC 50%, #B8860B 100%);
    --black-primary: #0A0A0A;
    --black-secondary: #1A1A1A;
    --black-tertiary: #2A2A2A;
    --white: #FFFFFF;
    --gray-light: #F5F5F5;
    --gray-medium: #888888;
    --gray-dark: #333333;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-sm: 0 2px 10px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.15);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.2);
    --shadow-gold: 0 4px 20px rgba(212, 175, 55, 0.3);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--black-primary);
    color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ==================== 顶部信息栏 ==================== */
.top-bar {
    background: linear-gradient(90deg, var(--black-secondary) 0%, var(--black-tertiary) 100%);
    padding: 10px 0;
    border-bottom: 1px solid rgba(212, 175, 55, 0.1);
    font-size: 13px;
}

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

.top-bar-left {
    display: flex;
    gap: 30px;
}

.top-bar-left span {
    color: var(--gray-medium);
}

.top-bar-left i {
    color: var(--gold-primary);
    margin-right: 8px;
}

.wechat-btn {
    color: var(--gold-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.wechat-btn:hover {
    color: var(--gold-light);
}

/* ==================== 主导航 ==================== */
.main-header {
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(212, 175, 55, 0.1);
    transition: var(--transition);
}

.main-header.scrolled {
    background: rgba(10, 10, 10, 0.98);
    box-shadow: var(--shadow-lg);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-icon {
    width: 50px;
    height: 50px;
    background: var(--gold-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-gold);
}

.logo-yj {
    font-size: 24px;
    font-weight: 700;
    color: var(--black-primary);
}

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

.logo-main {
    font-size: 22px;
    font-weight: 700;
    color: var(--gold-primary);
    letter-spacing: 2px;
    font-family: 'Playfair Display', serif;
}

.logo-sub {
    font-size: 10px;
    color: var(--gray-medium);
    letter-spacing: 3px;
    text-transform: uppercase;
}

/* 导航菜单 */
.main-nav {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 5px;
}

.nav-item {
    position: relative;
}

.nav-item > a {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 12px 18px;
    color: var(--white);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    transition: var(--transition);
    border-radius: 8px;
}

.nav-item > a:hover,
.nav-item.active > a {
    color: var(--gold-primary);
    background: rgba(212, 175, 55, 0.1);
}

.nav-item > a i {
    font-size: 12px;
    transition: var(--transition);
}

.nav-item:hover > a i {
    transform: rotate(180deg);
}

/* 下拉菜单 */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--black-secondary);
    border: 1px solid rgba(212, 175, 55, 0.2);
    border-radius: 12px;
    padding: 10px;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
    z-index: 100;
}

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

.dropdown-menu a {
    display: block;
    padding: 12px 16px;
    color: var(--white);
    text-decoration: none;
    font-size: 14px;
    border-radius: 8px;
    transition: var(--transition);
}

.dropdown-menu a:hover {
    background: rgba(212, 175, 55, 0.15);
    color: var(--gold-primary);
}

/* 头部操作区 */
.header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.search-box {
    position: relative;
}

.search-input {
    width: 180px;
    padding: 10px 40px 10px 15px;
    background: var(--black-tertiary);
    border: 1px solid rgba(212, 175, 55, 0.2);
    border-radius: 25px;
    color: var(--white);
    font-size: 14px;
    transition: var(--transition);
}

.search-input:focus {
    outline: none;
    border-color: var(--gold-primary);
    width: 220px;
}

.search-input::placeholder {
    color: var(--gray-medium);
}

.search-btn {
    position: absolute;
    right: 5px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--gold-primary);
    cursor: pointer;
    padding: 8px;
}

.btn-consult {
    padding: 12px 28px;
    background: var(--gold-gradient);
    color: var(--black-primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    border-radius: 25px;
    transition: var(--transition);
    box-shadow: var(--shadow-gold);
}

.btn-consult:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(212, 175, 55, 0.4);
}

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

.mobile-menu-btn span {
    width: 25px;
    height: 2px;
    background: var(--gold-primary);
    transition: var(--transition);
}

/* 移动端菜单 */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 320px;
    height: 100vh;
    background: var(--black-secondary);
    z-index: 2000;
    transition: var(--transition);
    overflow-y: auto;
}

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

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid rgba(212, 175, 55, 0.1);
}

.mobile-menu-close {
    background: none;
    border: none;
    color: var(--gold-primary);
    font-size: 24px;
    cursor: pointer;
}

.mobile-nav {
    padding: 20px;
}

.mobile-nav a {
    display: block;
    padding: 15px 0;
    color: var(--white);
    text-decoration: none;
    font-size: 16px;
    border-bottom: 1px solid rgba(212, 175, 55, 0.1);
    transition: var(--transition);
}

.mobile-nav a:hover {
    color: var(--gold-primary);
    padding-left: 10px;
}

.mobile-contact {
    padding: 20px;
    border-top: 1px solid rgba(212, 175, 55, 0.1);
}

.mobile-contact p {
    color: var(--gray-medium);
    margin-bottom: 10px;
}

.mobile-contact i {
    color: var(--gold-primary);
    margin-right: 10px;
}

.mobile-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1999;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.mobile-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* ==================== 悬浮按钮 ==================== */
.floating-buttons {
    position: fixed;
    right: 20px;
    bottom: 100px;
    z-index: 999;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.float-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 20px;
    text-decoration: none;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
    border: none;
    cursor: pointer;
}

.phone-btn {
    background: linear-gradient(135deg, #25D366, #128C7E);
}

.consult-btn {
    background: var(--gold-gradient);
    color: var(--black-primary);
}

.wechat-btn {
    background: linear-gradient(135deg, #07C160, #05a350);
}

.top-btn {
    background: var(--black-tertiary);
    border: 1px solid rgba(212, 175, 55, 0.3);
    opacity: 0;
    visibility: hidden;
}

.top-btn.visible {
    opacity: 1;
    visibility: visible;
}

.float-btn:hover {
    transform: scale(1.1) translateY(-3px);
}

/* 微信弹窗 */
.wechat-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 3000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.wechat-modal.active {
    opacity: 1;
    visibility: visible;
}

.wechat-modal-content {
    background: var(--black-secondary);
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    position: relative;
    max-width: 350px;
}

.wechat-close {
    position: absolute;
    top: 15px;
    right: 15px;
    background: none;
    border: none;
    color: var(--gray-medium);
    font-size: 20px;
    cursor: pointer;
}

.wechat-qr {
    width: 180px;
    height: 180px;
    background: var(--white);
    border-radius: 15px;
    margin: 0 auto 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--black-primary);
}

.wechat-qr i {
    font-size: 80px;
    color: #07C160;
}

.wechat-tip {
    color: var(--gold-primary);
    font-size: 14px;
}

/* ==================== 页脚 ==================== */
.main-footer {
    background: var(--black-secondary);
    border-top: 1px solid rgba(212, 175, 55, 0.1);
}

.footer-top {
    padding: 80px 0 50px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 50px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.footer-desc {
    color: var(--gray-medium);
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 25px;
}

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

.social-link {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--black-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gold-primary);
    text-decoration: none;
    transition: var(--transition);
    border: 1px solid rgba(212, 175, 55, 0.2);
}

.social-link:hover {
    background: var(--gold-primary);
    color: var(--black-primary);
    transform: translateY(-3px);
}

.footer-title {
    color: var(--gold-primary);
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 25px;
    position: relative;
    padding-bottom: 15px;
}

.footer-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--gold-gradient);
}

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

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

.footer-links a {
    color: var(--gray-medium);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-links a::before {
    content: '›';
    color: var(--gold-primary);
    font-size: 18px;
}

.footer-links a:hover {
    color: var(--gold-primary);
    padding-left: 5px;
}

.contact-item {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
}

.contact-item i {
    color: var(--gold-primary);
    font-size: 18px;
    margin-top: 3px;
}

.contact-item strong {
    color: var(--white);
    font-size: 14px;
    display: block;
    margin-bottom: 5px;
}

.contact-item p {
    color: var(--gray-medium);
    font-size: 13px;
    line-height: 1.6;
}

.footer-bottom {
    background: var(--black-primary);
    padding: 25px 0;
    border-top: 1px solid rgba(212, 175, 55, 0.1);
}

.footer-bottom-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.copyright {
    color: var(--gray-medium);
    font-size: 13px;
}

.footer-cert {
    display: flex;
    gap: 30px;
}

.footer-cert span {
    color: var(--gold-primary);
    font-size: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-cert span::before {
    content: '✓';
    width: 18px;
    height: 18px;
    background: rgba(212, 175, 55, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
}

/* ==================== 通用组件 ==================== */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-label {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(212, 175, 55, 0.1);
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: 25px;
    color: var(--gold-primary);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.section-title {
    font-size: 42px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 20px;
    font-family: 'Playfair Display', serif;
}

.section-title span {
    color: var(--gold-primary);
}

.section-desc {
    color: var(--gray-medium);
    font-size: 16px;
    max-width: 600px;
    margin: 0 auto;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 30px;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--gold-gradient);
    color: var(--black-primary);
    box-shadow: var(--shadow-gold);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(212, 175, 55, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--gold-primary);
    border: 2px solid var(--gold-primary);
}

.btn-outline:hover {
    background: var(--gold-primary);
    color: var(--black-primary);
}

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

.btn-white:hover {
    background: var(--gold-primary);
}

/* 卡片样式 */
.card {
    background: var(--black-secondary);
    border: 1px solid rgba(212, 175, 55, 0.1);
    border-radius: 20px;
    overflow: hidden;
    transition: var(--transition);
}

.card:hover {
    border-color: rgba(212, 175, 55, 0.3);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

/* ==================== 首页Hero区域 ==================== */
.hero-section {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(10,10,10,0.9) 0%, rgba(26,26,26,0.8) 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"><circle cx="50" cy="50" r="40" fill="none" stroke="%23D4AF37" stroke-width="0.5" opacity="0.1"/></svg>');
    background-size: 200px;
    animation: bgRotate 60s linear infinite;
}

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

.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--gold-primary);
    border-radius: 50%;
    opacity: 0.3;
    animation: float 15s infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(100vh) rotate(0deg); opacity: 0; }
    10% { opacity: 0.3; }
    90% { opacity: 0.3; }
    100% { transform: translateY(-100vh) rotate(720deg); opacity: 0; }
}

.hero-content {
    position: relative;
    z-index: 3;
    max-width: 800px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    background: rgba(212, 175, 55, 0.1);
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: 30px;
    margin-bottom: 30px;
}

.hero-badge i {
    color: var(--gold-primary);
}

.hero-badge span {
    color: var(--gold-light);
    font-size: 14px;
}

.hero-title {
    font-size: 64px;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 25px;
    font-family: 'Playfair Display', serif;
}

.hero-title .gold {
    background: var(--gold-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--gray-medium);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    margin-bottom: 60px;
}

.hero-stats {
    display: flex;
    gap: 50px;
}

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

.stat-number {
    font-size: 48px;
    font-weight: 700;
    color: var(--gold-primary);
    line-height: 1;
    font-family: 'Playfair Display', serif;
}

.stat-label {
    font-size: 14px;
    color: var(--gray-medium);
    margin-top: 10px;
}

.hero-image {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 45%;
    z-index: 3;
}

.hero-image img {
    width: 100%;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
}

/* 滚动指示器 */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    text-align: center;
}

.scroll-indicator span {
    display: block;
    color: var(--gray-medium);
    font-size: 12px;
    margin-bottom: 10px;
    letter-spacing: 2px;
}

.scroll-indicator i {
    color: var(--gold-primary);
    font-size: 24px;
    animation: bounce 2s infinite;
}

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

/* ==================== 服务区域 ==================== */
.services-section {
    padding: 100px 0;
    background: var(--black-primary);
    position: relative;
}

.services-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gold-primary), transparent);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.service-card {
    background: var(--black-secondary);
    border: 1px solid rgba(212, 175, 55, 0.1);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gold-gradient);
    transform: scaleX(0);
    transition: var(--transition);
}

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

.service-card:hover {
    border-color: rgba(212, 175, 55, 0.3);
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: rgba(212, 175, 55, 0.1);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 36px;
    color: var(--gold-primary);
    transition: var(--transition);
}

.service-card:hover .service-icon {
    background: var(--gold-gradient);
    color: var(--black-primary);
    transform: rotateY(360deg);
}

.service-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 15px;
}

.service-desc {
    font-size: 14px;
    color: var(--gray-medium);
    line-height: 1.7;
    margin-bottom: 20px;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--gold-primary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}

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

/* ==================== 关于区域 ==================== */
.about-section {
    padding: 100px 0;
    background: var(--black-secondary);
    position: relative;
    overflow: hidden;
}

.about-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.05) 0%, transparent 70%);
    border-radius: 50%;
}

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

.about-images {
    position: relative;
}

.about-img-main {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-img-main img {
    width: 100%;
    display: block;
}

.about-img-sub {
    position: absolute;
    bottom: -30px;
    right: -30px;
    width: 250px;
    border-radius: 15px;
    overflow: hidden;
    border: 5px solid var(--black-secondary);
    box-shadow: var(--shadow-lg);
}

.about-img-sub img {
    width: 100%;
    display: block;
}

.about-experience {
    position: absolute;
    top: 30px;
    left: -30px;
    background: var(--gold-gradient);
    padding: 25px 35px;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow-gold);
}

.about-experience .years {
    font-size: 48px;
    font-weight: 900;
    color: var(--black-primary);
    line-height: 1;
}

.about-experience .text {
    font-size: 14px;
    color: var(--black-primary);
    font-weight: 600;
}

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

.about-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin: 30px 0;
}

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

.about-feature i {
    width: 40px;
    height: 40px;
    background: rgba(212, 175, 55, 0.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gold-primary);
    font-size: 18px;
}

.about-feature span {
    color: var(--white);
    font-size: 15px;
    font-weight: 500;
}

/* ==================== 项目展示区域 ==================== */
.projects-section {
    padding: 100px 0;
    background: var(--black-primary);
}

.projects-tabs {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 12px 30px;
    background: var(--black-secondary);
    border: 1px solid rgba(212, 175, 55, 0.2);
    border-radius: 30px;
    color: var(--gray-medium);
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.tab-btn:hover,
.tab-btn.active {
    background: var(--gold-gradient);
    border-color: var(--gold-primary);
    color: var(--black-primary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.project-card {
    background: var(--black-secondary);
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid rgba(212, 175, 55, 0.1);
    transition: var(--transition);
}

.project-card:hover {
    border-color: rgba(212, 175, 55, 0.3);
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

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

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

.project-card:hover .project-image img {
    transform: scale(1.1);
}

.project-badge {
    position: absolute;
    top: 15px;
    left: 15px;
    padding: 6px 15px;
    background: var(--gold-gradient);
    color: var(--black-primary);
    font-size: 12px;
    font-weight: 600;
    border-radius: 20px;
}

.project-content {
    padding: 25px;
}

.project-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 10px;
}

.project-desc {
    font-size: 14px;
    color: var(--gray-medium);
    line-height: 1.6;
    margin-bottom: 20px;
}

.project-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 20px;
    border-top: 1px solid rgba(212, 175, 55, 0.1);
}

.project-price {
    font-size: 14px;
    color: var(--gray-medium);
}

.project-price span {
    color: var(--gold-primary);
    font-size: 20px;
    font-weight: 700;
}

.project-link {
    width: 40px;
    height: 40px;
    background: rgba(212, 175, 55, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gold-primary);
    text-decoration: none;
    transition: var(--transition);
}

.project-link:hover {
    background: var(--gold-primary);
    color: var(--black-primary);
}

/* ==================== 优势区域 ==================== */
.why-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--black-secondary) 0%, var(--black-primary) 100%);
    position: relative;
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.why-card {
    text-align: center;
    padding: 40px 25px;
    background: rgba(26, 26, 26, 0.5);
    border: 1px solid rgba(212, 175, 55, 0.1);
    border-radius: 20px;
    transition: var(--transition);
}

.why-card:hover {
    background: var(--black-secondary);
    border-color: rgba(212, 175, 55, 0.3);
    transform: translateY(-5px);
}

.why-number {
    font-size: 64px;
    font-weight: 900;
    color: transparent;
    -webkit-text-stroke: 1px var(--gold-primary);
    line-height: 1;
    margin-bottom: 20px;
    font-family: 'Playfair Display', serif;
}

.why-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 15px;
}

.why-desc {
    font-size: 14px;
    color: var(--gray-medium);
    line-height: 1.7;
}

/* ==================== 客户评价 ==================== */
.testimonials-section {
    padding: 100px 0;
    background: var(--black-primary);
}

.testimonials-slider {
    position: relative;
}

.testimonial-card {
    background: var(--black-secondary);
    border: 1px solid rgba(212, 175, 55, 0.1);
    border-radius: 20px;
    padding: 40px;
    margin: 20px;
}

.testimonial-quote {
    font-size: 60px;
    color: var(--gold-primary);
    opacity: 0.3;
    line-height: 1;
    margin-bottom: 20px;
}

.testimonial-text {
    font-size: 16px;
    color: var(--gray-light);
    line-height: 1.8;
    margin-bottom: 30px;
    font-style: italic;
}

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

.testimonial-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--gold-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--black-primary);
    font-weight: 700;
}

.testimonial-info h4 {
    color: var(--white);
    font-size: 16px;
    margin-bottom: 5px;
}

.testimonial-info p {
    color: var(--gold-primary);
    font-size: 13px;
}

/* ==================== CTA区域 ==================== */
.cta-section {
    padding: 100px 0;
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.1) 0%, rgba(10, 10, 10, 1) 100%);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.1) 0%, transparent 60%);
    border-radius: 50%;
}

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

.cta-title {
    font-size: 48px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 20px;
    font-family: 'Playfair Display', serif;
}

.cta-title span {
    color: var(--gold-primary);
}

.cta-desc {
    font-size: 18px;
    color: var(--gray-medium);
    margin-bottom: 40px;
}

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

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

@media (max-width: 992px) {
    .main-nav {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .search-box {
        display: none;
    }
    
    .hero-title {
        font-size: 42px;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    
    .about-images {
        order: -1;
    }
    
    .section-title {
        font-size: 32px;
    }
}

@media (max-width: 768px) {
    .top-bar-left {
        display: none;
    }
    
    .services-grid,
    .why-grid,
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-bottom-inner {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-stats {
        flex-wrap: wrap;
        gap: 30px;
    }
    
    .about-features {
        grid-template-columns: 1fr;
    }
    
    .about-img-sub {
        display: none;
    }
    
    .about-experience {
        left: 10px;
        padding: 15px 25px;
    }
    
    .about-experience .years {
        font-size: 36px;
    }
    
    .cta-title {
        font-size: 32px;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
}

/* ==================== 动画效果 ==================== */
.fade-in {
    animation: fadeIn 0.8s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.slide-in-left {
    animation: slideInLeft 0.8s ease-out;
}

@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-50px); }
    to { opacity: 1; transform: translateX(0); }
}

.slide-in-right {
    animation: slideInRight 0.8s ease-out;
}

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

/* ==================== 页面内容区域 ==================== */
.page-content {
    min-height: calc(100vh - 400px);
}

/* 页面横幅 */
.page-banner {
    position: relative;
    padding: 120px 0 80px;
    background: linear-gradient(135deg, var(--black-secondary) 0%, var(--black-primary) 100%);
    text-align: center;
    overflow: hidden;
}

.page-banner::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"><circle cx="50" cy="50" r="40" fill="none" stroke="%23D4AF37" stroke-width="0.3" opacity="0.1"/></svg>');
    background-size: 150px;
}

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

.page-banner-title {
    font-size: 48px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 15px;
    font-family: 'Playfair Display', serif;
}

.page-banner-title span {
    color: var(--gold-primary);
}

.page-banner-desc {
    font-size: 18px;
    color: var(--gray-medium);
    max-width: 600px;
    margin: 0 auto;
}

/* 面包屑导航 */
.breadcrumb {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 30px;
}

.breadcrumb a {
    color: var(--gray-medium);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
}

.breadcrumb a:hover {
    color: var(--gold-primary);
}

.breadcrumb .current {
    color: var(--gold-primary);
}

.breadcrumb-separator {
    color: var(--gray-medium);
}


/* 最新文章模块 */
.latest-articles-section {
    padding: 80px 0;
    background: var(--black-secondary);
}
.latest-articles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}
.latest-article-card {
    background: var(--black-primary);
    border: 1px solid rgba(212, 175, 55, 0.1);
    border-radius: 20px;
    overflow: hidden;
    transition: var(--transition);
}
.latest-article-card:hover {
    border-color: rgba(212, 175, 55, 0.3);
    transform: translateY(-5px);
}
.article-image {
    position: relative;
    display: block;
    height: 180px;
    overflow: hidden;
}
.article-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}
.latest-article-card:hover .article-image img {
    transform: scale(1.1);
}
.article-date {
    position: absolute;
    top: 15px;
    left: 15px;
    background: var(--gold-gradient);
    border-radius: 8px;
    padding: 6px 12px;
    font-size: 14px;
    font-weight: 700;
    color: var(--black-primary);
}
.article-content {
    padding: 25px;
}
.article-content h3 {
    font-size: 18px;
    margin-bottom: 12px;
    line-height: 1.4;
}
.article-content h3 a {
    color: var(--white);
    text-decoration: none;
    transition: var(--transition);
}
.article-content h3 a:hover {
    color: var(--gold-primary);
}
.article-content p {
    color: var(--gray-medium);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 15px;
}
@media (max-width: 992px) {
    .latest-articles-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 768px) {
    .latest-articles-grid {
        grid-template-columns: 1fr;
    }
}


/* ========== Hero 轮播区域 ========== */
.hero-section.hero-carousel {
    position: relative;
    height: 100vh;
    min-height: 700px;
    overflow: hidden;
}

.hero-swiper {
    width: 100%;
    height: 100%;
}

.hero-swiper .swiper-slide {
    position: relative;
    display: flex;
    align-items: center;
}

.hero-slide-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: 1;
    animation: heroZoom 8s ease-in-out infinite alternate;
}

@keyframes heroZoom {
    0% { transform: scale(1); }
    100% { transform: scale(1.1); }
}

.hero-slide-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.4) 100%);
    z-index: 2;
}

.hero-carousel .container {
    position: relative;
    z-index: 3;
}

.hero-carousel .hero-content {
    max-width: 800px;
    padding: 100px 0;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(212, 175, 55, 0.15);
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: 50px;
    margin-bottom: 30px;
}

.hero-badge i {
    color: var(--gold-primary);
    font-size: 16px;
}

.hero-badge span {
    color: var(--gold-primary);
    font-size: 14px;
    font-weight: 500;
}

.hero-title {
    font-size: 64px;
    font-weight: 700;
    color: var(--white);
    line-height: 1.2;
    margin-bottom: 24px;
}

.hero-title .gold {
    color: var(--gold-primary);
    display: inline-block;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--gray-light);
    line-height: 1.8;
    margin-bottom: 40px;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    margin-bottom: 60px;
}

.btn-primary {
    background: var(--gold-gradient);
    color: var(--black-primary);
    padding: 16px 36px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: var(--transition);
    border: none;
    text-decoration: none;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(212, 175, 55, 0.3);
    color: var(--black-primary);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    padding: 16px 36px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    border: 2px solid rgba(212, 175, 55, 0.5);
    transition: var(--transition);
    text-decoration: none;
}

.btn-outline:hover {
    border-color: var(--gold-primary);
    background: rgba(212, 175, 55, 0.1);
    transform: translateY(-3px);
}

.hero-stats {
    display: flex;
    gap: 60px;
}

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

.stat-number {
    font-size: 42px;
    font-weight: 700;
    color: var(--gold-primary);
    line-height: 1.2;
}

.stat-number span {
    font-size: 24px;
}

.stat-label {
    color: var(--gray-light);
    font-size: 14px;
    margin-top: 8px;
}

/* Swiper 导航样式 */
.hero-pagination {
    position: absolute;
    bottom: 120px !important;
    left: 50% !important;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    gap: 12px;
}

.hero-pagination .swiper-pagination-bullet {
    width: 12px;
    height: 12px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    opacity: 1;
    transition: all 0.3s ease;
}

.hero-pagination .swiper-pagination-bullet-active {
    background: var(--gold-primary);
    width: 30px;
    border-radius: 10px;
}

.hero-button-next,
.hero-button-prev {
    width: 50px;
    height: 50px;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(8px);
    border-radius: 50%;
    color: var(--white);
    border: 1px solid rgba(212, 175, 55, 0.3);
    transition: var(--transition);
    z-index: 10;
}

.hero-button-next:hover,
.hero-button-prev:hover {
    background: var(--gold-primary);
    color: var(--black-primary);
    border-color: var(--gold-primary);
}

.hero-button-next::after,
.hero-button-prev::after {
    font-size: 20px;
    font-weight: bold;
}

.hero-button-next {
    right: 50px;
}

.hero-button-prev {
    left: 50px;
}

/* 向下滚动指示器 */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--white);
    font-size: 13px;
    opacity: 0.7;
    animation: bounce 2s infinite;
}

.scroll-indicator span {
    margin-bottom: 8px;
}

.scroll-indicator i {
    font-size: 16px;
}

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

/* 响应式 */
@media (max-width: 992px) {
    .hero-title {
        font-size: 48px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .hero-stats {
        gap: 30px;
    }
    
    .stat-number {
        font-size: 32px;
    }
    
    .hero-button-next {
        right: 20px;
    }
    
    .hero-button-prev {
        left: 20px;
    }
}

@media (max-width: 768px) {
    .hero-section.hero-carousel {
        min-height: 600px;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-subtitle {
        font-size: 14px;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 15px;
        margin-bottom: 40px;
    }
    
    .btn-primary,
    .btn-outline {
        justify-content: center;
        padding: 14px 28px;
    }
    
    .hero-stats {
        flex-wrap: wrap;
        justify-content: center;
        gap: 25px;
    }
    
    .stat-number {
        font-size: 28px;
    }
    
    .hero-pagination {
        bottom: 90px !important;
    }
    
    .hero-button-next,
    .hero-button-prev {
        display: none;
    }
}


/* ========== 页面横幅（带背景图） ========== */
.page-banner {
    position: relative;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    overflow: hidden;
}

.page-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.5) 100%);
    z-index: 1;
}

.page-banner-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 0 20px;
}

.page-banner .section-label {
    display: inline-block;
    color: var(--gold-primary);
    font-size: 14px;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 15px;
    border-bottom: 2px solid var(--gold-primary);
    padding-bottom: 8px;
}

.page-banner-title {
    font-size: 48px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 15px;
}

.page-banner-title span {
    color: var(--gold-primary);
}

.page-banner-desc {
    font-size: 18px;
    color: var(--gray-light);
    opacity: 0.9;
    margin-bottom: 20px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: var(--gray-medium);
    font-size: 14px;
}

.breadcrumb a {
    color: var(--gray-light);
    text-decoration: none;
    transition: var(--transition);
}

.breadcrumb a:hover {
    color: var(--gold-primary);
}

.breadcrumb-separator {
    color: var(--gold-primary);
}

.breadcrumb .current {
    color: var(--gold-primary);
}

@media (max-width: 768px) {
    .page-banner {
        height: 300px;
    }
    
    .page-banner-title {
        font-size: 32px;
    }
    
    .page-banner-desc {
        font-size: 16px;
    }
}

.logo-image,
.footer-logo-image {
    height: 50px;           /* 桌面端基准高度 */
    width: auto;            /* 宽度自适应 */
    display: block;
    max-width: 100%;        /* 防止超出父容器 */
}

/* 移动端适当缩小 */
@media (max-width: 768px) {
    .logo-image,
    .footer-logo-image {
        height: 36px;
    }
}