/* ============================================
   中盛国际商务（中山）有限公司 - 全局样式
   主色调: #F09909 (金色)
   版本: 1.0.0
   ============================================ */

:root {
    --primary: #F09909;
    --primary-dark: #D48300;
    --primary-light: #FFB84D;
    --secondary: #1a1a2e;
    --accent: #16213e;
    --text: #333333;
    --text-light: #666666;
    --bg: #ffffff;
    --bg-light: #f8f9fa;
    --bg-dark: #0f0f1a;
    --gold-gradient: linear-gradient(135deg, #F09909 0%, #FFB84D 50%, #F09909 100%);
    --dark-gradient: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    --shadow: 0 10px 40px rgba(240, 153, 9, 0.15);
    --shadow-lg: 0 20px 60px rgba(0,0,0,0.3);
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 重置与基础 */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    color: var(--text);
    line-height: 1.8;
    overflow-x: hidden;
    background: var(--bg);
}

/* 滚动条美化 */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-light); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary-dark); }

/* 选择文本颜色 */
::selection { background: var(--primary); color: white; }

/* 动画关键帧 */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(60px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInLeft {
    from { opacity: 0; transform: translateX(-60px); }
    to { opacity: 1; transform: translateX(0); }
}
@keyframes fadeInRight {
    from { opacity: 0; transform: translateX(60px); }
    to { opacity: 1; transform: translateX(0); }
}
@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.8); }
    to { opacity: 1; transform: scale(1); }
}
@keyframes slideDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}
@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.8; }
}
@keyframes shimmer {
    0% { background-position: -200% center; }
    100% { background-position: 200% center; }
}
@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}
@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}
@keyframes countUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 粒子背景容器 */
#particles-canvas {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    pointer-events: none;
    z-index: 1;
    opacity: 0.6;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(240,153,9,0.1);
    transition: var(--transition);
}
.navbar.scrolled {
    background: rgba(255,255,255,0.98);
    box-shadow: 0 4px 30px rgba(0,0,0,0.1);
}
.navbar-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}
.logo-icon {
    width: 50px; height: 50px;
    background: var(--gold-gradient);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 900;
    font-size: 20px;
    box-shadow: 0 4px 15px rgba(240,153,9,0.4);
    animation: pulse 3s infinite;
}
.logo-text {
    display: flex;
    flex-direction: column;
}
.logo-title {
    font-size: 22px;
    font-weight: 800;
    color: var(--secondary);
    line-height: 1.2;
    letter-spacing: 1px;
}
.logo-sub {
    font-size: 12px;
    color: var(--primary);
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
}
.nav-menu {
    display: flex;
    gap: 8px;
    list-style: none;
}
.nav-menu a {
    text-decoration: none;
    color: var(--text);
    font-weight: 600;
    font-size: 15px;
    padding: 10px 18px;
    border-radius: 8px;
    transition: var(--transition);
    position: relative;
}
.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0; left: 50%;
    width: 0; height: 3px;
    background: var(--primary);
    border-radius: 2px;
    transition: var(--transition);
    transform: translateX(-50%);
}
.nav-menu a:hover, .nav-menu a.active {
    color: var(--primary);
    background: rgba(240,153,9,0.08);
}
.nav-menu a:hover::after, .nav-menu a.active::after {
    width: 60%;
}
.nav-cta {
    background: var(--gold-gradient);
    color: white !important;
    padding: 12px 28px !important;
    border-radius: 30px !important;
    font-weight: 700 !important;
    box-shadow: 0 4px 20px rgba(240,153,9,0.3);
}
.nav-cta::after { display: none !important; }
.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(240,153,9,0.4);
}
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 10px;
}
.mobile-toggle span {
    width: 28px; height: 3px;
    background: var(--secondary);
    border-radius: 2px;
    transition: var(--transition);
}

/* 英雄区 */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--dark-gradient);
    overflow: hidden;
    padding-top: 80px;
}
.hero-bg {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(240,153,9,0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255,184,77,0.1) 0%, transparent 50%);
    animation: gradientShift 15s ease infinite;
    background-size: 200% 200%;
}
.hero-grid {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(240,153,9,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(240,153,9,0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    animation: shimmer 20s linear infinite;
}
.hero-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 30px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 10;
}
.hero-text h1 {
    font-size: 56px;
    font-weight: 900;
    color: white;
    line-height: 1.2;
    margin-bottom: 24px;
    animation: fadeInUp 1s ease-out;
}
.hero-text h1 span {
    background: var(--gold-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}
.hero-text .subtitle {
    font-size: 20px;
    color: rgba(255,255,255,0.8);
    margin-bottom: 40px;
    animation: fadeInUp 1s ease-out 0.2s both;
    max-width: 600px;
}
.hero-stats {
    display: flex;
    gap: 40px;
    margin-bottom: 40px;
    animation: fadeInUp 1s ease-out 0.4s both;
}
.stat-item {
    text-align: center;
}
.stat-number {
    font-size: 42px;
    font-weight: 900;
    color: var(--primary);
    line-height: 1;
    display: block;
}
.stat-label {
    font-size: 14px;
    color: rgba(255,255,255,0.6);
    margin-top: 8px;
}
.hero-buttons {
    display: flex;
    gap: 20px;
    animation: fadeInUp 1s ease-out 0.6s both;
}
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 36px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 16px;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    position: relative;
    overflow: hidden;
}
.btn-primary {
    background: var(--gold-gradient);
    color: white;
    box-shadow: 0 8px 30px rgba(240,153,9,0.4);
}
.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(240,153,9,0.5);
}
.btn-outline {
    background: transparent;
    color: white;
    border: 2px solid rgba(255,255,255,0.3);
}
.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(240,153,9,0.1);
}
.hero-visual {
    position: relative;
    animation: fadeInRight 1s ease-out 0.3s both;
}
.hero-image {
    width: 100%;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    transform: perspective(1000px) rotateY(-5deg);
    transition: var(--transition);
    border: 3px solid rgba(240,153,9,0.3);
}
.hero-image:hover {
    transform: perspective(1000px) rotateY(0deg);
}
.floating-card {
    position: absolute;
    background: white;
    padding: 20px;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.2);
    animation: float 6s ease-in-out infinite;
}
.floating-card.card-1 {
    top: -30px; right: -20px;
    animation-delay: 0s;
}
.floating-card.card-2 {
    bottom: 40px; left: -30px;
    animation-delay: 2s;
}
.floating-card h4 {
    color: var(--primary);
    font-size: 14px;
    margin-bottom: 8px;
}
.floating-card p {
    color: var(--text-light);
    font-size: 13px;
}

/* 区块通用样式 */
.section {
    padding: 100px 0;
    position: relative;
}
.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 60px;
}
.section-label {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(240,153,9,0.1);
    color: var(--primary);
    border-radius: 30px;
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: 2px;
    text-transform: uppercase;
}
.section-title {
    font-size: 42px;
    font-weight: 900;
    color: var(--secondary);
    margin-bottom: 20px;
    line-height: 1.3;
}
.section-title span {
    color: var(--primary);
}
.section-desc {
    font-size: 18px;
    color: var(--text-light);
    line-height: 1.8;
}

/* 服务卡片 */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 30px;
}
.service-card {
    background: white;
    border-radius: 20px;
    padding: 40px 30px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.08);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(0,0,0,0.05);
}
.service-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 4px;
    background: var(--gold-gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
}
.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow);
}
.service-card:hover::before {
    transform: scaleX(1);
}
.service-icon {
    width: 70px; height: 70px;
    background: rgba(240,153,9,0.1);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    margin-bottom: 24px;
    transition: var(--transition);
}
.service-card:hover .service-icon {
    background: var(--gold-gradient);
    color: white;
    transform: scale(1.1) rotate(5deg);
}
.service-card h3 {
    font-size: 22px;
    font-weight: 800;
    color: var(--secondary);
    margin-bottom: 12px;
}
.service-card p {
    color: var(--text-light);
    font-size: 15px;
    line-height: 1.8;
}

/* 展会列表 */
.expo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 30px;
}
.expo-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0,0,0,0.08);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    border: 1px solid rgba(0,0,0,0.05);
}
.expo-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow);
}
.expo-image {
    width: 100%;
    height: 220px;
    object-fit: cover;
    transition: var(--transition);
}
.expo-card:hover .expo-image {
    transform: scale(1.05);
}
.expo-content {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.expo-tag {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(240,153,9,0.1);
    color: var(--primary);
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    margin-bottom: 12px;
    align-self: flex-start;
}
.expo-title {
    font-size: 18px;
    font-weight: 800;
    color: var(--secondary);
    margin-bottom: 12px;
    line-height: 1.4;
}
.expo-meta {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
    font-size: 13px;
    color: var(--text-light);
}
.expo-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}
.expo-desc {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 20px;
    flex: 1;
}
.expo-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-weight: 700;
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
}
.expo-link:hover {
    gap: 12px;
    color: var(--primary-dark);
}

/* 文章列表 */
.articles-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 30px;
}
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 30px;
}
.article-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(0,0,0,0.06);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    border: 1px solid rgba(0,0,0,0.04);
}
.article-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 15px 40px rgba(240,153,9,0.12);
}
.article-image-wrap {
    position: relative;
    overflow: hidden;
    height: 200px;
}
.article-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}
.article-card:hover .article-image {
    transform: scale(1.08);
}
.article-category {
    position: absolute;
    top: 16px; left: 16px;
    padding: 6px 14px;
    background: var(--gold-gradient);
    color: white;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}
.article-body {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.article-date {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 6px;
}
.article-title {
    font-size: 18px;
    font-weight: 800;
    color: var(--secondary);
    margin-bottom: 12px;
    line-height: 1.5;
    text-decoration: none;
    display: block;
    transition: var(--transition);
}
.article-title:hover {
    color: var(--primary);
}
.article-summary {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 16px;
    flex: 1;
}
.article-keywords {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: auto;
}
.keyword-tag {
    padding: 4px 12px;
    background: rgba(240,153,9,0.08);
    color: var(--primary);
    border-radius: 15px;
    font-size: 12px;
    text-decoration: none;
    transition: var(--transition);
}
.keyword-tag:hover {
    background: var(--primary);
    color: white;
}

/* 文章详情页 */
.article-detail {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 30px;
}
.article-header {
    text-align: center;
    margin-bottom: 40px;
    padding-bottom: 40px;
    border-bottom: 2px solid rgba(240,153,9,0.1);
}
.article-header h1 {
    font-size: 36px;
    font-weight: 900;
    color: var(--secondary);
    line-height: 1.4;
    margin-bottom: 20px;
}
.article-meta {
    display: flex;
    justify-content: center;
    gap: 24px;
    color: var(--text-light);
    font-size: 14px;
}
.article-content {
    font-size: 17px;
    line-height: 2;
    color: var(--text);
}
.article-content h3 {
    font-size: 24px;
    font-weight: 800;
    color: var(--secondary);
    margin: 40px 0 20px;
    padding-left: 20px;
    border-left: 4px solid var(--primary);
}
.article-content p {
    margin-bottom: 20px;
}
.article-content strong {
    color: var(--primary-dark);
}
.article-content img {
    width: 100%;
    border-radius: 12px;
    margin: 30px 0;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}
.article-content a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    border-bottom: 2px solid rgba(240,153,9,0.3);
    transition: var(--transition);
}
.article-content a:hover {
    border-bottom-color: var(--primary);
}
.article-related {
    margin-top: 60px;
    padding-top: 40px;
    border-top: 2px solid rgba(240,153,9,0.1);
}
.article-related h3 {
    font-size: 24px;
    font-weight: 800;
    color: var(--secondary);
    margin-bottom: 30px;
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 60px;
    flex-wrap: wrap;
}
.page-btn {
    padding: 12px 18px;
    border: 2px solid rgba(240,153,9,0.2);
    background: white;
    color: var(--text);
    border-radius: 10px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    min-width: 44px;
    text-align: center;
}
.page-btn:hover, .page-btn.active {
    background: var(--gold-gradient);
    border-color: var(--primary);
    color: white;
    box-shadow: 0 4px 15px rgba(240,153,9,0.3);
}
.page-btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* 关于我们 */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 30px;
    align-items: center;
}
.about-image {
    position: relative;
}
.about-image img {
    width: 100%;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
}
.about-image::before {
    content: '';
    position: absolute;
    top: -20px; left: -20px;
    width: 100%; height: 100%;
    border: 3px solid var(--primary);
    border-radius: 20px;
    z-index: -1;
}
.about-content h2 {
    font-size: 36px;
    font-weight: 900;
    color: var(--secondary);
    margin-bottom: 24px;
}
.about-content h2 span {
    color: var(--primary);
}
.about-content p {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.9;
    margin-bottom: 20px;
}
.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 30px;
}
.about-feature {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}
.about-feature i {
    width: 40px; height: 40px;
    background: rgba(240,153,9,0.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 18px;
    flex-shrink: 0;
}
.about-feature h4 {
    font-size: 16px;
    font-weight: 800;
    color: var(--secondary);
    margin-bottom: 4px;
}
.about-feature p {
    font-size: 14px;
    margin: 0;
}

/* 统计数据 */
.stats-section {
    background: var(--dark-gradient);
    position: relative;
    overflow: hidden;
}
.stats-section::before {
    content: '';
    position: absolute;
    inset: 0;
    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="rgba(240,153,9,0.1)" stroke-width="0.5"/></svg>');
    background-size: 100px 100px;
    opacity: 0.5;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 30px;
    position: relative;
    z-index: 1;
}
.stat-box {
    text-align: center;
    padding: 20px;
}
.stat-box .number {
    font-size: 52px;
    font-weight: 900;
    color: var(--primary);
    line-height: 1;
    margin-bottom: 12px;
    display: block;
}
.stat-box .label {
    font-size: 16px;
    color: rgba(255,255,255,0.7);
    font-weight: 600;
}
.stat-box .icon {
    font-size: 40px;
    margin-bottom: 16px;
    opacity: 0.8;
}

/* 联系表单 */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 30px;
    align-items: start;
}
.contact-info h3 {
    font-size: 28px;
    font-weight: 900;
    color: var(--secondary);
    margin-bottom: 30px;
}
.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 24px;
    padding: 20px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    transition: var(--transition);
}
.contact-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow);
}
.contact-item i {
    width: 50px; height: 50px;
    background: var(--gold-gradient);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
    flex-shrink: 0;
}
.contact-item h4 {
    font-size: 16px;
    font-weight: 800;
    color: var(--secondary);
    margin-bottom: 4px;
}
.contact-item p, .contact-item a {
    font-size: 15px;
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition);
}
.contact-item a:hover {
    color: var(--primary);
}
.qr-code {
    width: 150px;
    height: 150px;
    border-radius: 12px;
    object-fit: cover;
    border: 3px solid var(--primary);
    box-shadow: 0 8px 25px rgba(240,153,9,0.2);
}
.contact-form {
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.1);
    border: 1px solid rgba(0,0,0,0.05);
}
.contact-form h3 {
    font-size: 24px;
    font-weight: 800;
    color: var(--secondary);
    margin-bottom: 8px;
}
.contact-form .subtitle {
    color: var(--text-light);
    margin-bottom: 30px;
    font-size: 14px;
}
.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 8px;
}
.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid rgba(0,0,0,0.08);
    border-radius: 12px;
    font-size: 15px;
    font-family: inherit;
    transition: var(--transition);
    background: var(--bg-light);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(240,153,9,0.1);
    background: white;
}
.form-group textarea {
    min-height: 120px;
    resize: vertical;
}
.form-submit {
    width: 100%;
    padding: 16px;
    background: var(--gold-gradient);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 800;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 8px 25px rgba(240,153,9,0.3);
}
.form-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 35px rgba(240,153,9,0.4);
}

/* 页脚 */
.footer {
    background: var(--bg-dark);
    color: white;
    padding: 80px 0 30px;
    position: relative;
    overflow: hidden;
}
.footer::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: var(--gold-gradient);
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    max-width: 1400px;
    margin: 0 auto 60px;
    padding: 0 30px;
}
.footer-brand h3 {
    font-size: 24px;
    font-weight: 900;
    margin-bottom: 20px;
    color: white;
}
.footer-brand p {
    color: rgba(255,255,255,0.6);
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 20px;
}
.footer-brand .contact-line {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    color: rgba(255,255,255,0.8);
    font-size: 14px;
}
.footer-brand .contact-line i {
    color: var(--primary);
    width: 20px;
}
.footer-links h4 {
    font-size: 18px;
    font-weight: 800;
    margin-bottom: 24px;
    color: var(--primary);
}
.footer-links ul {
    list-style: none;
}
.footer-links li {
    margin-bottom: 12px;
}
.footer-links a {
    color: rgba(255,255,255,0.6);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}
.footer-links a:hover {
    color: var(--primary);
    padding-left: 8px;
}
.footer-links a::before {
    content: '›';
    color: var(--primary);
    font-weight: 900;
}
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 30px;
    max-width: 1400px;
    margin: 0 auto;
    padding: 30px 30px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}
.footer-bottom p {
    color: rgba(255,255,255,0.4);
    font-size: 13px;
}
.footer-bottom a {
    color: rgba(255,255,255,0.4);
    text-decoration: none;
    transition: var(--transition);
}
.footer-bottom a:hover {
    color: var(--primary);
}

/* 回到顶部 */
.back-to-top {
    position: fixed;
    bottom: 30px; right: 30px;
    width: 50px; height: 50px;
    background: var(--gold-gradient);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 8px 25px rgba(240,153,9,0.4);
    transition: var(--transition);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    border: none;
    font-size: 20px;
}
.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 35px rgba(240,153,9,0.5);
}

/* 加载动画 */
.loading-screen {
    position: fixed;
    inset: 0;
    background: var(--secondary);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 20px;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}
.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}
.loading-spinner {
    width: 60px; height: 60px;
    border: 4px solid rgba(240,153,9,0.2);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: rotate 1s linear infinite;
}
.loading-text {
    color: var(--primary);
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 4px;
}

/* 滚动显示动画 */
.reveal {
    opacity: 0;
    transform: translateY(60px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}
.reveal.active {
    opacity: 1;
    transform: translateY(0);
}
.reveal-left {
    opacity: 0;
    transform: translateX(-60px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}
.reveal-left.active {
    opacity: 1;
    transform: translateX(0);
}
.reveal-right {
    opacity: 0;
    transform: translateX(60px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}
.reveal-right.active {
    opacity: 1;
    transform: translateX(0);
}
.reveal-scale {
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}
.reveal-scale.active {
    opacity: 1;
    transform: scale(1);
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .hero-text h1 { font-size: 44px; }
    .section-title { font-size: 36px; }
}

@media (max-width: 992px) {
    .hero-content { grid-template-columns: 1fr; text-align: center; }
    .hero-text .subtitle { margin: 0 auto 40px; }
    .hero-stats { justify-content: center; }
    .hero-buttons { justify-content: center; }
    .hero-visual { display: none; }
    .about-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .navbar-inner { height: 70px; }
    .nav-menu {
        position: fixed;
        top: 70px; left: 0; right: 0;
        background: white;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 40px rgba(0,0,0,0.1);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    .mobile-toggle { display: flex; }
    .hero-text h1 { font-size: 32px; }
    .section { padding: 60px 0; }
    .section-title { font-size: 28px; }
    .stats-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .about-features { grid-template-columns: 1fr; }
    .floating-card { display: none; }
}

@media (max-width: 480px) {
    .hero-text h1 { font-size: 26px; }
    .btn { padding: 14px 24px; font-size: 14px; }
    .expo-grid, .articles-grid { grid-template-columns: 1fr; }
    .services-grid { grid-template-columns: 1fr; }
}

/* 打印样式 */
@media print {
    .navbar, .back-to-top, .loading-screen, #particles-canvas { display: none !important; }
    .hero { min-height: auto; padding: 40px 0; }
    .section { padding: 40px 0; }
    body { font-size: 14px; }
}