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

:root {
    --primary-color: #2563eb;
    --primary-light: #60a5fa;
    --primary-dark: #1e40af;
    --text-color: #2c3e50;
    --text-secondary: #7f8c8d;
    --bg-light: #f8f9fa;
    --border-color: #e8ecf0;
    --white: #ffffff;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* 导航栏 */
.navbar {
    background: var(--white);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 0;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    font-size: 15px;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.btn-nav {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white !important;
    padding: 10px 24px;
    border-radius: 24px;
    transition: all 0.3s;
}

.btn-nav:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(233, 30, 99, 0.3);
}

/* 主视觉区 */
.hero {
    background: 
        linear-gradient(135deg, rgba(37, 99, 235, 0.03) 0%, rgba(96, 165, 250, 0.02) 100%),
        linear-gradient(180deg, #ffffff 0%, #eff6ff 50%, #ffffff 100%);
    padding: 100px 0 120px;
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid rgba(37, 99, 235, 0.08);
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -10%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 20s ease-in-out infinite;
    filter: blur(60px);
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -50%;
    right: -10%;
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, rgba(96, 165, 250, 0.06) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 25s ease-in-out infinite reverse;
    filter: blur(60px);
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg) scale(1); }
    33% { transform: translate(50px, -50px) rotate(120deg) scale(1.1); }
    66% { transform: translate(-30px, 30px) rotate(240deg) scale(0.9); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.8; }
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 78px;
    font-weight: 900;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 50%, #60a5fa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -3px;
    animation: titleFloat 4s ease-in-out infinite, gradientShift 8s ease infinite;
    position: relative;
    z-index: 2;
    text-shadow: 0 10px 30px rgba(37, 99, 235, 0.15);
    background-size: 200% 200%;
}

@keyframes titleFloat {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-15px) scale(1.02); }
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero-subtitle {
    font-size: 32px;
    font-weight: 700;
    color: #34495e;
    margin-bottom: 24px;
    letter-spacing: -1px;
    animation: subtitleFade 2s ease-out;
    position: relative;
}

.hero-subtitle::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 4px;
    background: linear-gradient(90deg, transparent, #2563eb, transparent);
    border-radius: 2px;
    animation: lineExpand 2s ease-out;
}

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

@keyframes lineExpand {
    from {
        width: 0;
        opacity: 0;
    }
    to {
        width: 120px;
        opacity: 1;
    }
}

.hero-description {
    font-size: 17px;
    color: #7f8c8d;
    margin-bottom: 36px;
    line-height: 1.8;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 50px;
}

.btn {
    padding: 16px 40px;
    border-radius: 32px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.4s;
    display: inline-block;
}

.btn-primary {
    background: linear-gradient(135deg, #60a5fa 0%, #2563eb 50%, #1e40af 100%);
    color: white;
    box-shadow: 0 15px 45px rgba(37, 99, 235, 0.5);
    border: 2px solid rgba(255, 255, 255, 0.5);
    position: relative;
    overflow: hidden;
    background-size: 200% 200%;
    animation: gradientFlow 3s ease infinite;
}

@keyframes gradientFlow {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.4) 0%, transparent 70%);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-primary:hover::before {
    width: 400px;
    height: 400px;
}

.btn-primary:hover {
    transform: translateY(-8px) scale(1.1);
    box-shadow: 0 25px 60px rgba(37, 99, 235, 0.7), 0 0 30px rgba(37, 99, 235, 0.4);
    border-color: white;
}

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

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(233, 30, 99, 0.3);
}

.hero-stats {
    display: flex;
    gap: 80px;
    justify-content: center;
}

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

.stat-number {
    font-size: 72px;
    font-weight: 900;
    margin-bottom: 12px;
    background: linear-gradient(135deg, #2563eb 0%, #60a5fa 50%, #93c5fd 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: numberPulse 3s ease-in-out infinite;
    position: relative;
    display: inline-block;
}

.stat-number::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 3px;
    background: linear-gradient(90deg, transparent, #2563eb, transparent);
    border-radius: 2px;
    animation: glowPulse 3s ease-in-out infinite;
}

@keyframes numberPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.5; box-shadow: 0 0 10px rgba(37, 99, 235, 0.3); }
    50% { opacity: 1; box-shadow: 0 0 20px rgba(37, 99, 235, 0.6); }
}

.stat-label {
    font-size: 17px;
    color: var(--text-secondary);
    font-weight: 600;
}

/* 通用章节样式 */
.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-title {
    font-size: 42px;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
}

/* 功能特色 */
.features {
    padding: 100px 0;
    background: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.feature-card {
    background: linear-gradient(135deg, #ffffff 0%, #eff6ff 100%);
    border: 1px solid rgba(37, 99, 235, 0.1);
    border-radius: 32px;
    padding: 52px 44px;
    text-align: center;
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 8px 30px rgba(37, 99, 235, 0.08);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(37, 99, 235, 0.05), transparent);
    transition: left 0.8s ease;
}

.feature-card:hover::before {
    left: 100%;
}

.feature-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, #2563eb, #60a5fa, #93c5fd);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card:hover::after {
    transform: scaleX(1);
}

.feature-card:hover {
    transform: translateY(-20px) scale(1.05);
    box-shadow: 0 25px 70px rgba(37, 99, 235, 0.25), 0 0 30px rgba(37, 99, 235, 0.1);
    border-color: rgba(37, 99, 235, 0.3);
    background: linear-gradient(135deg, #ffffff 0%, #dbeafe 100%);
}

.feature-icon {
    font-size: 72px;
    margin-bottom: 32px;
    display: inline-block;
    animation: iconFloat 3s ease-in-out infinite;
    filter: drop-shadow(0 8px 16px rgba(37, 99, 235, 0.2));
    transition: all 0.4s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.2) rotate(10deg);
    filter: drop-shadow(0 12px 24px rgba(37, 99, 235, 0.4));
}

@keyframes iconFloat {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-12px) rotate(5deg); }
}

.feature-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 16px;
}

.feature-desc {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* 服务项目 */
.services {
    padding: 100px 0;
    background: var(--bg-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.service-card {
    background: linear-gradient(135deg, #ffffff 0%, #fafbfc 100%);
    border-radius: 28px;
    padding: 56px 48px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(37, 99, 235, 0.08);
}

.service-card::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    height: 6px;
    background: linear-gradient(90deg, #2563eb, #60a5fa, #93c5fd);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 28px 28px 0 0;
}

.service-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(96, 165, 250, 0.08), transparent);
    transition: left 1s ease;
}

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

.service-card:hover::after {
    left: 100%;
}

.service-card:hover {
    transform: translateY(-20px) scale(1.05);
    box-shadow: 0 30px 80px rgba(37, 99, 235, 0.3), 0 0 40px rgba(37, 99, 235, 0.1);
    background: linear-gradient(135deg, #ffffff 0%, #dbeafe 100%);
    border-color: rgba(37, 99, 235, 0.2);
}

.service-number {
    font-size: 80px;
    font-weight: 900;
    background: linear-gradient(135deg, #2563eb 0%, #60a5fa 50%, #93c5fd 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 32px;
    opacity: 0.2;
    line-height: 1;
    transition: all 0.4s ease;
    display: inline-block;
}

.service-card:hover .service-number {
    opacity: 0.35;
    transform: scale(1.1);
}

.service-title {
    font-size: 26px;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 18px;
}

.service-desc {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.8;
}

.service-list {
    list-style: none;
    padding: 0;
}

.service-list li {
    padding: 10px 0;
    color: var(--text-secondary);
    font-size: 14px;
    padding-left: 24px;
    position: relative;
}

.service-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* 关于我们 */
.about {
    padding: 120px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
}

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

.about-title {
    font-size: 48px;
    font-weight: 800;
    color: var(--text-color);
    margin-bottom: 40px;
    position: relative;
    padding-bottom: 24px;
}

.about-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100px;
    height: 5px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    border-radius: 3px;
    box-shadow: 0 2px 10px rgba(37, 99, 235, 0.3);
}

.about-desc {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 24px;
}

.about-info {
    margin-top: 44px;
    padding: 36px;
    background: white;
    border-radius: 20px;
    border-left: 5px solid var(--primary-color);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.info-item {
    padding: 12px 0;
    font-size: 15px;
    color: var(--text-secondary);
}

.info-item strong {
    color: var(--text-color);
    font-weight: 600;
}

.about-image {
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-placeholder {
    width: 100%;
    max-width: 400px;
    height: 400px;
}

/* 底部 */
.footer {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: white;
    padding: 70px 0 35px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 60px;
    margin-bottom: 48px;
}

.footer-brand .logo-text {
    font-size: 24px;
    color: white;
    -webkit-text-fill-color: white;
}

.footer-desc {
    color: rgba(255, 255, 255, 0.7);
    margin-top: 16px;
    font-size: 15px;
}

.footer-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.footer-column h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
    color: white;
}

.footer-column a {
    display: block;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    padding: 8px 0;
    font-size: 14px;
    transition: color 0.3s;
}

.footer-column a:hover {
    color: #60a5fa;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 32px;
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
}

.footer-bottom p {
    margin: 8px 0;
}

/* 响应式 */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hero-title {
        font-size: 42px;
    }

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

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero-stats {
        flex-direction: column;
        gap: 32px;
    }

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

    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

    .footer-links {
        grid-template-columns: 1fr;
    }
}

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

.hero-content,
.feature-card,
.service-card {
    animation: fadeInUp 0.8s ease-out;
}

.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4) { animation-delay: 0.4s; }
.feature-card:nth-child(5) { animation-delay: 0.5s; }
.feature-card:nth-child(6) { animation-delay: 0.6s; }