/* ===================================
   网站93 - 网格拼贴布局
   主题：橙黄活力风
   =================================== */
:root {
    --primary: #f39c12;
    --primary-light: #f1c40f;
    --primary-dark: #e67e22;
    --accent: #e74c3c;
    --bg-light: #fef9e7;
    --bg-card: #ffffff;
    --text-dark: #2c3e50;
    --text-gray: #7f8c8d;
    --border: #fdebd0;
    --shadow: 0 4px 20px rgba(243, 156, 18, 0.15);
    --shadow-hover: 0 12px 50px rgba(243, 156, 18, 0.25);
}

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

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

a {
    text-decoration: none;
    color: inherit;
}

/* 顶部栏 */
.header-bar {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    padding: 15px 50px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-area h1 {
    color: #fff;
    font-size: 22px;
}

.logo-area p {
    color: rgba(255,255,255,0.85);
    font-size: 12px;
}

.header-contact {
    display: flex;
    gap: 30px;
}

.contact-item {
    color: #fff;
    font-size: 14px;
}

.contact-item span {
    opacity: 0.8;
}

/* 主导航 */
.main-nav {
    background: #fff;
    padding: 0 50px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-list {
    display: flex;
    list-style: none;
    justify-content: center;
    gap: 5px;
}

.nav-list a {
    display: block;
    padding: 18px 25px;
    color: var(--text-dark);
    font-size: 15px;
    transition: all 0.3s ease;
    border-bottom: 3px solid transparent;
}

.nav-list a:hover,
.nav-list a.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
    background: var(--bg-light);
}

/* 横幅区 */
.banner-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 50%, var(--accent) 100%);
    padding: 80px 50px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.banner-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.banner-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.banner-content h2 {
    font-size: 44px;
    color: #fff;
    margin-bottom: 20px;
}

.banner-content p {
    font-size: 18px;
    color: rgba(255,255,255,0.9);
    margin-bottom: 30px;
}

.banner-btn {
    display: inline-block;
    padding: 16px 45px;
    background: #fff;
    color: var(--primary);
    border-radius: 30px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.banner-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

/* 网格拼贴区 */
.collage-section {
    padding: 80px 50px;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h3 {
    font-size: 34px;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.section-header p {
    font-size: 16px;
    color: var(--text-gray);
}

/* 拼贴网格 */
.collage-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(3, 200px);
    gap: 20px;
    max-width: 1400px;
    margin: 0 auto;
}

.collage-item {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 25px;
    box-shadow: var(--shadow);
    transition: all 0.4s ease;
    display: flex;
    flex-direction: column;
    justify-content: center;
    border: 1px solid var(--border);
}

.collage-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.collage-item.large {
    grid-column: span 2;
    grid-row: span 2;
}

.collage-item.tall {
    grid-row: span 2;
}

.collage-item.wide {
    grid-column: span 2;
}

.collage-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: 15px;
}

.collage-item h4 {
    font-size: 20px;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.collage-item p {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.6;
}

/* 统计条 */
.stats-strip {
    background: #fff;
    padding: 40px 50px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.stat-box {
    text-align: center;
    padding: 20px;
}

.stat-number {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    font-size: 13px;
    color: var(--text-gray);
    margin-top: 5px;
}

/* 功能块 */
.feature-section {
    padding: 80px 50px;
    background: #fff;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    max-width: 1400px;
    margin: 0 auto;
}

.feature-card {
    background: var(--bg-light);
    border-radius: 16px;
    padding: 35px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid var(--border);
}

.feature-card:hover {
    background: #fff;
    box-shadow: var(--shadow-hover);
    transform: translateY(-5px);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    margin: 0 auto 20px;
}

.feature-card h4 {
    font-size: 18px;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.feature-card p {
    font-size: 14px;
    color: var(--text-gray);
}

/* 价格区 */
.pricing-section {
    padding: 80px 50px;
    background: var(--bg-light);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    max-width: 1200px;
    margin: 0 auto;
}

.price-card {
    background: #fff;
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.price-card:hover {
    transform: translateY(-8px);
}

.price-card.featured {
    border-color: var(--primary);
    transform: scale(1.05);
}

.price-card.featured:hover {
    transform: scale(1.05) translateY(-8px);
}

.price-title {
    font-size: 22px;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.price-amount {
    font-size: 42px;
    font-weight: 700;
    color: var(--primary);
}

.price-amount span {
    font-size: 16px;
    color: var(--text-gray);
}

.price-features {
    list-style: none;
    margin: 25px 0;
}

.price-features li {
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
    color: var(--text-gray);
}

.price-btn {
    display: inline-block;
    padding: 12px 35px;
    background: var(--primary);
    color: #fff;
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.price-btn:hover {
    background: var(--primary-dark);
}

/* CTA区 */
.cta-section {
    padding: 80px 50px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    text-align: center;
}

.cta-section h3 {
    font-size: 36px;
    color: #fff;
    margin-bottom: 15px;
}

.cta-section p {
    font-size: 16px;
    color: rgba(255,255,255,0.9);
    margin-bottom: 30px;
}

.cta-btn {
    display: inline-block;
    padding: 16px 50px;
    background: #fff;
    color: var(--primary);
    border-radius: 30px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.cta-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

/* 页脚 */
.footer {
    background: var(--text-dark);
    padding: 60px 50px 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand h4 {
    font-size: 20px;
    color: #fff;
    margin-bottom: 15px;
}

.footer-brand p {
    font-size: 14px;
    color: rgba(255,255,255,0.6);
    line-height: 1.8;
}

.footer-title {
    font-size: 16px;
    color: #fff;
    margin-bottom: 20px;
}

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

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    font-size: 14px;
    color: rgba(255,255,255,0.6);
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #fff;
}

.footer-contact p {
    font-size: 14px;
    color: rgba(255,255,255,0.6);
    margin-bottom: 10px;
}

.footer-contact strong {
    color: #fff;
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
    font-size: 14px;
    color: rgba(255,255,255,0.4);
}

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

/* 响应式 */
@media (max-width: 1200px) {
    .collage-grid {
        grid-template-columns: repeat(3, 1fr);
        grid-template-rows: repeat(3, 180px);
    }
}

@media (max-width: 992px) {
    .collage-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .nav-list {
        flex-wrap: wrap;
        justify-content: center;
    }

    .feature-grid,
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

@media (max-width: 768px) {
    .header-bar {
        flex-direction: column;
        gap: 15px;
        padding: 15px 20px;
    }

    .main-nav {
        padding: 0 20px;
    }

    .nav-list a {
        padding: 15px 18px;
        font-size: 14px;
    }

    .banner-section {
        padding: 60px 20px;
    }

    .banner-content h2 {
        font-size: 28px;
    }

    .collage-section,
    .feature-section,
    .pricing-section,
    .cta-section {
        padding: 50px 20px;
    }

    .collage-grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
    }

    .collage-item.large,
    .collage-item.tall,
    .collage-item.wide {
        grid-column: span 1;
        grid-row: span 1;
    }

    .stats-strip {
        grid-template-columns: repeat(2, 1fr);
    }

    .feature-grid,
    .pricing-grid {
        grid-template-columns: 1fr;
    }

    .price-card.featured {
        transform: none;
    }
}