:root {
    --primary: #0a1628;
    --secondary: #1e3a5f;
    --accent: #ffd700;
    --accent-hover: #ffed4e;
    --text: #333;
    --text-light: #666;
    --bg: #f8f9fa;
    --white: #ffffff;
    --border: #e0e0e0;
    --shadow: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-hover: 0 8px 30px rgba(0,0,0,0.15);
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Segoe UI', 'Microsoft YaHei', 'PingFang SC', sans-serif;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
}

/* Header & Navigation */
header {
    position: relative;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: var(--white);
    overflow: hidden;
}

.header-banner {
    position: relative;
    width: 100%;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: url('../images/banner.jpg') center/cover no-repeat;
}

.header-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(10, 22, 40, 0.75);
}

.header-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
    padding: 2rem;
}

.header-badge {
    display: inline-block;
    background: var(--accent);
    color: var(--primary);
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-weight: 700;
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    letter-spacing: 1px;
}

.header-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.2;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.header-subtitle {
    font-size: 1.5rem;
    color: var(--accent);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.header-date {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 2rem;
}

.header-venue {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255,255,255,0.15);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    backdrop-filter: blur(10px);
}

/* Navigation */
nav {
    position: sticky;
    top: 0;
    background: var(--white);
    box-shadow: var(--shadow);
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.nav-logo {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--primary);
    padding: 1rem 0;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text);
    font-weight: 600;
    padding: 1.5rem 0;
    display: block;
    border-bottom: 3px solid transparent;
    transition: all 0.3s;
}

.nav-links a:hover {
    color: var(--secondary);
    border-bottom-color: var(--accent);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--primary);
}

/* Main Content */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    background: var(--white);
    margin: 2rem 0;
    padding: 3rem;
    border-radius: 16px;
    box-shadow: var(--shadow);
}

.section-title {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 3px solid var(--accent);
    display: inline-block;
    font-weight: 700;
}

.section-content {
    color: var(--text-light);
    font-size: 1.05rem;
}

/* Info Cards */
.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.info-card {
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    transition: all 0.3s;
    border-left: 4px solid var(--accent);
}

.info-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-left-color: var(--secondary);
}

.info-label {
    font-size: 0.85rem;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.info-value {
    font-size: 1.1rem;
    color: var(--primary);
    font-weight: 700;
}

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.stat-item {
    text-align: center;
    padding: 2rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: var(--white);
    border-radius: 12px;
    transition: transform 0.3s;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--accent);
    display: block;
}

.stat-label {
    font-size: 0.95rem;
    opacity: 0.9;
    margin-top: 0.5rem;
}

/* Content with Image */
.content-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.content-image {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.content-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.5s;
}

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

/* Lists */
.feature-list {
    list-style: none;
    margin: 1rem 0;
}

.feature-list li {
    padding: 0.75rem 0;
    padding-left: 2rem;
    position: relative;
    border-bottom: 1px dashed var(--border);
}

.feature-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: 800;
    font-size: 1.2rem;
}

/* Table Styles */
.table-responsive {
    overflow-x: auto;
    margin: 2rem 0;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
    font-size: 0.95rem;
}

thead {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: var(--white);
}

th, td {
    padding: 1rem 1.25rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th {
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
}

tr:hover {
    background: #f8f9fa;
}

tbody tr:last-child td {
    border-bottom: none;
}

.price-highlight {
    color: #e74c3c;
    font-weight: 700;
    font-size: 1.1rem;
}

/* Form Styles */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary);
    box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.checkbox-group {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.checkbox-item input[type="checkbox"] {
    width: auto;
    accent-color: var(--secondary);
}

.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
    color: var(--white);
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(10, 22, 40, 0.3);
    background: linear-gradient(135deg, #264b7a 0%, #152238 100%);
}

.btn-accent {
    background: linear-gradient(135deg, #f39c12 0%, #e74c3c 100%);
}

.btn-accent:hover {
    background: linear-gradient(135deg, #f5a623 0%, #ff6b6b 100%);
}

/* Contact Cards */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.contact-card {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: var(--white);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    transition: transform 0.3s;
}

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

.contact-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--accent);
}

.contact-card h3 {
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.contact-card p {
    opacity: 0.9;
    line-height: 1.8;
}

/* Footer */
footer {
    background: var(--primary);
    color: var(--white);
    padding: 3rem 0 2rem;
    margin-top: 4rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
}

.footer-brand h2 {
    color: var(--accent);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.footer-brand p {
    opacity: 0.7;
    line-height: 1.8;
}

.footer-links h4 {
    color: var(--accent);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

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

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--accent);
}

.footer-bottom {
    max-width: 1200px;
    margin: 2rem auto 0;
    padding: 2rem 2rem 0;
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
    opacity: 0.6;
    font-size: 0.9rem;
}

/* Breadcrumb */
.breadcrumb {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
}

.breadcrumb-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    font-size: 0.9rem;
    color: var(--text-light);
}

.breadcrumb-inner a {
    color: var(--secondary);
    text-decoration: none;
}

/* Scroll to top */
.scroll-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--secondary);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: var(--shadow);
    transition: all 0.3s;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
}

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

.scroll-top:hover {
    background: var(--accent);
    color: var(--primary);
    transform: translateY(-3px);
}

/* SEO Text (hidden but accessible) */
.seo-text {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Responsive */
@media (max-width: 1024px) {
    .content-split {
        grid-template-columns: 1fr;
    }
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .header-title { font-size: 2rem; }
    .header-subtitle { font-size: 1.2rem; }
    .section { padding: 2rem 1.5rem; }
    .nav-links { display: none; }
    .mobile-menu-btn { display: block; }
    .form-row { grid-template-columns: 1fr; }
    .footer-content { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
    .header-title { font-size: 1.5rem; }
    .stats-grid { grid-template-columns: 1fr; }
    .section { padding: 1.5rem 1rem; }
    main { padding: 0 1rem; }
}

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

.section {
    animation: fadeInUp 0.6s ease-out;
}

/* Print styles */
@media print {
    nav, .scroll-top, footer, .btn { display: none !important; }
    .section { box-shadow: none; border: 1px solid #ddd; margin: 1rem 0; }
    body { background: white; }
}