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

html {
    scroll-behavior: smooth;
}

body {
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
    line-height: 1.6;
    color: #333;
    background: #fdfdfd;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(20px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 0;
}

.logo img {
    height: 70px;
    width: auto;
    display: block;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-links a {
    text-decoration: none;
    color: #2c3e50;
    font-weight: 500;
    font-size: 16px;
    position: relative;
    transition: color 0.3s ease;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, #ff6b6b 0%, #feca57 100%);
    transition: width 0.3s ease;
}

.nav-links a:hover {
    color: #ff6b6b;
}

.nav-links a:hover::after {
    width: 100%;
}

.hero {
    margin-top: 106px;
    position: relative;
    min-height: 680px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(255, 107, 107, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(254, 202, 87, 0.15) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: white;
    padding: 60px 0;
}

.hero-logo {
    margin-bottom: 30px;
}

.hero-logo img {
    height: 120px;
    width: auto;
    display: inline-block;
    filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.3));
}

.hero h1 {
    font-size: 52px;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: 2px;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.subtitle {
    font-size: 26px;
    font-weight: 400;
    margin-bottom: 12px;
    opacity: 0.95;
}

.hero-desc {
    font-size: 18px;
    margin-bottom: 45px;
    opacity: 0.8;
}

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

.btn {
    display: inline-block;
    padding: 16px 48px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: all 0.3s ease;
    letter-spacing: 1px;
}

.btn-primary {
    background: linear-gradient(135deg, #ff6b6b 0%, #feca57 100%);
    color: white;
    box-shadow: 0 8px 25px rgba(255, 107, 107, 0.4);
}

.btn-primary:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 35px rgba(255, 107, 107, 0.5);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.5);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: white;
    transform: translateY(-4px);
}

.scroll-hint {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 30px;
    color: rgba(255, 255, 255, 0.6);
    animation: bounce 2s infinite;
}

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

section {
    padding: 100px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 70px;
}

.title-tag {
    display: inline-block;
    padding: 6px 18px;
    background: linear-gradient(135deg, #ff6b6b 0%, #feca57 100%);
    color: white;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 2px;
    border-radius: 20px;
    margin-bottom: 18px;
}

.section-title h2 {
    font-size: 40px;
    color: #1a1a2e;
    margin-bottom: 12px;
    font-weight: 700;
}

.title-desc {
    font-size: 17px;
    color: #666;
}

.about {
    background: linear-gradient(to bottom, #fdfdfd 0%, #f8f9fa 100%);
}

.about-stats {
    display: flex;
    justify-content: center;
    gap: 80px;
    margin-bottom: 50px;
}

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

.stat-num {
    font-size: 56px;
    font-weight: 800;
    background: linear-gradient(135deg, #ff6b6b 0%, #feca57 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.stat-label {
    font-size: 16px;
    color: #666;
    margin-top: 8px;
}

.about-text {
    max-width: 850px;
    margin: 0 auto;
    text-align: center;
}

.about-text p {
    font-size: 18px;
    margin-bottom: 20px;
    color: #444;
    line-height: 1.9;
}

.services {
    background: white;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
    gap: 35px;
}

.service-card {
    background: linear-gradient(145deg, #ffffff 0%, #f8f9fa 100%);
    padding: 50px 35px;
    border-radius: 24px;
    border: 1px solid rgba(0, 0, 0, 0.05);
    text-align: center;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, #ff6b6b 0%, #feca57 100%);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.service-card:hover {
    transform: translateY(-12px);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.12);
}

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

.service-icon {
    font-size: 64px;
    margin-bottom: 24px;
    display: inline-block;
}

.service-card h3 {
    font-size: 24px;
    margin-bottom: 16px;
    color: #1a1a2e;
    font-weight: 600;
}

.service-card p {
    color: #666;
    font-size: 15px;
    line-height: 1.8;
}

.contact {
    background: linear-gradient(to bottom, #f8f9fa 0%, #fdfdfd 100%);
}

.contact-content {
    max-width: 900px;
    margin: 0 auto;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 30px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 22px;
    background: white;
    padding: 35px;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.06);
    transition: transform 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-6px);
}

.contact-icon-box {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #ff6b6b 0%, #feca57 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon {
    font-size: 28px;
}

.contact-item h4 {
    font-size: 18px;
    margin-bottom: 10px;
    color: #1a1a2e;
    font-weight: 600;
}

.contact-item p,
.contact-item a {
    color: #666;
    text-decoration: none;
    font-size: 15px;
    line-height: 1.7;
}

.contact-item a:hover {
    color: #ff6b6b;
}

.footer {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: white;
    padding: 50px 0;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.footer-logo img {
    height: 60px;
    width: auto;
    opacity: 0.95;
}

.footer p {
    opacity: 0.7;
    font-size: 14px;
}

@media (max-width: 768px) {
    .nav {
        flex-direction: column;
        gap: 15px;
        padding: 12px 0;
    }

    .logo img {
        height: 55px;
    }

    .nav-links {
        gap: 24px;
    }

    .nav-links a {
        font-size: 14px;
    }

    .hero {
        margin-top: 110px;
        min-height: 550px;
    }

    .hero-logo img {
        height: 90px;
    }

    .hero h1 {
        font-size: 32px;
    }

    .subtitle {
        font-size: 20px;
    }

    .hero-desc {
        font-size: 15px;
    }

    .hero-buttons {
        flex-direction: column;
        gap: 15px;
    }

    .btn {
        padding: 14px 40px;
    }

    .section-title h2 {
        font-size: 30px;
    }

    .about-stats {
        flex-direction: column;
        gap: 40px;
    }

    .stat-num {
        font-size: 44px;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .contact-info {
        grid-template-columns: 1fr;
    }

    section {
        padding: 70px 0;
    }
}