/* ==================== Global Styles ==================== */

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

:root {
    --primary-red: #D90000;
    --primary-black: #000000;
    --primary-white: #FFFFFF;
    --accent-gold: #D4AF37;
    --accent-yellow: #FFD700;
    --bg-dark: #0F0F0F;
    --bg-light: #F5F5F5;
    --text-primary: #1A1A1A;
    --text-secondary: #666666;
    --border-color: #E0E0E0;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Microsoft YaHei', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-primary);
    background-color: var(--primary-white);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ==================== Container ==================== */

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

/* ==================== Navigation ==================== */

.navbar {
    background-color: var(--primary-black);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

.navbar-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.navbar-logo a {
    display: flex;
    align-items: center;
    text-decoration: none;
    transition: var(--transition);
}

.logo-img {
    height: 50px;
    width: auto;
    object-fit: contain;
    transition: var(--transition);
}

.navbar-logo a:hover .logo-img {
    transform: scale(1.05);
}

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

.nav-link {
    color: var(--primary-white);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: var(--transition);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-red);
    transition: width 0.3s ease;
}

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

.nav-link:hover {
    color: var(--primary-red);
}

.navbar-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.navbar-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--primary-white);
    margin: 5px 0;
    transition: var(--transition);
}

/* ==================== Hero Section ==================== */

.hero {
    position: relative;
    height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    color: var(--primary-white);
    text-align: center;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-background img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

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

.hero-content {
    position: relative;
    z-index: 3;
    max-width: 800px;
    animation: fadeInUp 0.8s ease;
}

.hero-title {
    font-size: 72px;
    font-weight: bold;
    margin-bottom: 20px;
    letter-spacing: 4px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero-subtitle {
    font-size: 32px;
    margin-bottom: 15px;
    color: var(--accent-gold);
    font-weight: 300;
    letter-spacing: 2px;
}

.hero-description {
    font-size: 18px;
    margin-bottom: 40px;
    opacity: 0.95;
}

/* ==================== Buttons ==================== */

.cta-button {
    display: inline-block;
    padding: 15px 40px;
    background-color: var(--primary-red);
    color: var(--primary-white);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 16px;
    transition: var(--transition);
    border: 2px solid var(--primary-red);
    cursor: pointer;
}

.cta-button:hover {
    background-color: transparent;
    color: var(--primary-red);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(217, 0, 0, 0.2);
}

.cta-button.secondary {
    background-color: transparent;
    color: var(--primary-red);
    border: 2px solid var(--primary-red);
}

.cta-button.secondary:hover {
    background-color: var(--primary-red);
    color: var(--primary-white);
}

.cta-button.primary {
    background-color: var(--primary-red);
    color: var(--primary-white);
}

.btn {
    display: inline-block;
    padding: 14px 40px;
    font-size: 16px;
    font-weight: bold;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    border-radius: 50px;
}

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

.btn-primary:hover {
    background-color: var(--primary-black);
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background-color: var(--primary-red);
    color: var(--primary-white);
}

/* ==================== Section Titles ==================== */

.section-title {
    font-size: 42px;
    font-weight: bold;
    text-align: center;
    margin-bottom: 60px;
    color: var(--primary-black);
    position: relative;
    padding-bottom: 20px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-red), var(--accent-gold));
}

/* ==================== Highlights Section ==================== */

.highlights {
    padding: 80px 0;
    background-color: var(--bg-light);
}

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

.highlight-card {
    background-color: var(--primary-white);
    padding: 40px 30px;
    border-radius: 10px;
    text-align: center;
    transition: var(--transition);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    border-left: 4px solid var(--primary-red);
}

.highlight-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(217, 0, 0, 0.15);
}

.highlight-number {
    font-size: 48px;
    font-weight: bold;
    color: var(--primary-red);
    margin-bottom: 15px;
}

.highlight-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--primary-black);
}

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

/* ==================== Business Preview ==================== */

.business-preview {
    padding: 80px 0;
    background-color: var(--primary-white);
}

.business-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 50px;
    align-items: center;
}

.business-item {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.business-image {
    overflow: hidden;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.business-image img {
    width: 100%;
    height: auto;
    transition: var(--transition);
}

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

.business-info h3 {
    font-size: 28px;
    margin-bottom: 15px;
    color: var(--primary-black);
}

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

.learn-more {
    display: inline-block;
    color: var(--primary-red);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    width: fit-content;
}

.learn-more:hover {
    color: var(--primary-black);
    transform: translateX(5px);
}

/* ==================== Network Preview ==================== */

.network-preview {
    padding: 80px 0;
    background-color: var(--bg-light);
}

.network-image {
    margin: 40px 0;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

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

.network-description {
    text-align: center;
    color: var(--text-secondary);
    font-size: 16px;
    margin: 30px 0;
    line-height: 1.8;
}

/* ==================== CTA Section ==================== */

.cta-section {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary-black), var(--bg-dark));
    color: var(--primary-white);
    text-align: center;
}

.cta-section h2 {
    font-size: 42px;
    margin-bottom: 20px;
}

.cta-section p {
    font-size: 18px;
    margin-bottom: 40px;
    opacity: 0.9;
}

/* ==================== Footer ==================== */

.footer {
    background-color: var(--primary-black);
    color: var(--primary-white);
    padding: 60px 0 20px;
}

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

.footer-section h4 {
    font-size: 18px;
    margin-bottom: 15px;
    color: var(--accent-gold);
}

.footer-section p {
    color: #CCCCCC;
    font-size: 14px;
    line-height: 1.8;
}

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

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

.footer-section a {
    color: #CCCCCC;
    text-decoration: none;
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--primary-red);
}

.footer-bottom {
    border-top: 1px solid #333333;
    padding-top: 20px;
    text-align: center;
    color: #999999;
    font-size: 14px;
}

/* ==================== Text Utilities ==================== */

.text-red {
    color: var(--primary-red);
}

.text-white {
    color: var(--primary-white);
}

.text-black {
    color: var(--primary-black);
}

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

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

/* ==================== Animations ==================== */

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

/* ==================== Responsive Design ==================== */

@media (max-width: 768px) {
    .navbar-toggle {
        display: flex;
    }

    .nav-menu {
        position: absolute;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--primary-black);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        gap: 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-link {
        display: block;
        padding: 15px 0;
        border-bottom: 1px solid var(--border-color);
    }

    .hero {
        height: 400px;
    }

    .hero-title {
        font-size: 48px;
    }

    .hero-subtitle {
        font-size: 24px;
    }

    .hero-description {
        font-size: 16px;
    }

    .section-title {
        font-size: 32px;
        margin-bottom: 40px;
    }

    .highlights-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .business-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .cta-section h2 {
        font-size: 28px;
    }

    .cta-section p {
        font-size: 16px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .btn {
        padding: 12px 30px;
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .section-title {
        font-size: 24px;
    }

    .highlight-card {
        padding: 30px 20px;
    }

    .cta-button {
        padding: 12px 30px;
        font-size: 14px;
    }
}