/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 薯条色调 - 金黄色系 */
    --primary-color: #FF6B35;
    --secondary-color: #F7931E;
    --accent-color: #FFD700;
    --gold-light: #FFE135;
    --gold-dark: #DAA520;
    --orange-light: #FFA500;
    --orange-dark: #FF8C00;
    --text-color: #1f2937;
    --text-light: #6b7280;
    --bg-color: #ffffff;
    --bg-light: #FFFBF0;
    --border-color: #e5e7eb;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    /* 薯条渐变 - 金黄色渐变 */
    --gradient-primary: linear-gradient(135deg, #FFD700 0%, #FFA500 50%, #FF6B35 100%);
    --gradient-gold: linear-gradient(135deg, #FFE135 0%, #FFD700 100%);
    --gradient-orange: linear-gradient(135deg, #FF8C00 0%, #FF6B35 100%);
}

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

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

/* 导航栏 */
.navbar {
    background: var(--bg-color);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 0.3rem 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand a {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    font-size: 1rem;
    font-weight: bold;
}

.brand-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-logo {
    height: 28px;
    width: auto;
    object-fit: contain;
    display: inline-block;
}

.brand-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-logo:not([src]) + .brand-text,
.nav-logo[style*="display: none"] + .brand-text {
    display: inline;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 1.2rem;
    align-items: center;
    margin: 0;
    padding: 0;
}

.nav-menu a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: color 0.3s;
    padding: 0.2rem 0;
}

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

.nav-platforms {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    margin-left: 1rem;
}

.platform-badge {
    font-size: 0.7rem;
    padding: 0.15rem 0.5rem;
    border-radius: 8px;
    font-weight: 500;
    white-space: nowrap;
}

.platform-badge.xhs {
    background: linear-gradient(135deg, #FF2442 0%, #FF6B9D 100%);
    color: white;
}

.platform-badge.dy {
    background: linear-gradient(135deg, #000000 0%, #333333 100%);
    color: white;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

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

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

/* 英雄区域 */
.hero {
    background: var(--gradient-primary);
    color: white;
    padding: 8rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="2" fill="rgba(255,255,255,0.1)"/></svg>') repeat;
    opacity: 0.3;
    animation: float 20s infinite linear;
}

@keyframes float {
    0% { transform: translateY(0); }
    100% { transform: translateY(-100px); }
}

.hero-logo {
    position: relative;
    z-index: 1;
    margin-bottom: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-logo-img {
    max-width: 400px;
    width: 100%;
    height: auto;
    margin-bottom: 1.5rem;
    object-fit: contain;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
    animation: fadeInUp 1s ease-out;
}

.hero-brand {
    font-size: 4.5rem;
    margin-bottom: 0.5rem;
    font-weight: 900;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
    letter-spacing: 2px;
    animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-logo-img[style*="display: none"] ~ .hero-brand {
    animation: fadeInUp 1s ease-out;
}

.hero-company {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    opacity: 0.95;
    font-weight: 500;
    animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-slogan {
    font-size: 2rem;
    margin-bottom: 1rem;
    font-weight: 600;
    color: #FFFFFF;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 1s ease-out 0.4s both;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 3rem;
    opacity: 0.9;
    animation: fadeInUp 1s ease-out 0.6s both;
}

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

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* 平台支持 */
.platforms {
    padding: 5rem 0;
    background: var(--bg-color);
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 3rem;
}

.platforms-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.platform-card {
    background: white;
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(255, 107, 53, 0.15);
    text-align: center;
    transition: all 0.3s;
    border: 2px solid transparent;
}

.platform-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 30px rgba(255, 107, 53, 0.25);
    border-color: var(--primary-color);
}

.platform-logo {
    width: 100px;
    height: 100px;
    margin: 0 auto 1.5rem;
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.platform-icon {
    font-size: 4rem;
    line-height: 1;
    z-index: 1;
    position: relative;
}

.platform-logo.xiaohongshu {
    background: linear-gradient(135deg, #FF2442 0%, #FF6B9D 100%);
    box-shadow: 0 8px 20px rgba(255, 36, 66, 0.3);
}

.platform-logo.xiaohongshu::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.3) 0%, transparent 70%);
    animation: shine 3s infinite;
}

.platform-logo.douyin {
    background: linear-gradient(135deg, #000000 0%, #333333 50%, #000000 100%);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}

.platform-logo.douyin::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.2) 0%, transparent 70%);
    animation: shine 3s infinite;
}

@keyframes shine {
    0%, 100% { transform: translate(-50%, -50%) rotate(0deg); opacity: 0; }
    50% { transform: translate(-50%, -50%) rotate(180deg); opacity: 1; }
}

.platform-card:hover .platform-logo {
    transform: scale(1.1) rotate(5deg);
}

.platform-card h3 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.platform-card > p {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.platform-features {
    list-style: none;
    padding: 0;
    margin: 0;
    text-align: left;
}

.platform-features li {
    padding: 0.75rem 0;
    color: var(--text-color);
    font-size: 1rem;
    border-bottom: 1px solid var(--bg-light);
}

.platform-features li:last-child {
    border-bottom: none;
}

/* 特色服务 */
.features {
    padding: 5rem 0;
    background: var(--bg-light);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 0.5rem;
    box-shadow: var(--shadow);
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
}

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

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.feature-card p {
    color: var(--text-light);
}

/* 关于我们预览 */
.about-preview {
    padding: 5rem 0;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.about-content p {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.slogan-highlight {
    font-size: 1.5rem !important;
    font-weight: 600;
    color: var(--primary-color) !important;
    margin: 1.5rem 0 !important;
    padding: 1rem;
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.1) 0%, rgba(255, 165, 0, 0.1) 100%);
    border-left: 4px solid var(--primary-color);
    border-radius: 0.5rem;
}

/* 页面头部 */
.page-header {
    background: var(--gradient-primary);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 0.5rem;
}

.page-header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* 页面内容 */
.page-content {
    padding: 4rem 0;
}

.content-section {
    margin-bottom: 3rem;
}

.content-section h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.content-section p {
    font-size: 1.1rem;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.advantage-list {
    list-style: none;
    padding-left: 0;
}

.advantage-list li {
    padding: 0.75rem 0;
    padding-left: 2rem;
    position: relative;
    color: var(--text-light);
    font-size: 1.1rem;
}

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

/* 服务网格 */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.service-card {
    background: white;
    padding: 2rem;
    border-radius: 0.5rem;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.service-card p {
    color: var(--text-light);
    margin-bottom: 1rem;
}

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

.service-card ul li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-light);
}

.service-card ul li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* 联系页面 */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
}

.contact-info h2,
.contact-form h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--text-color);
}

.contact-item {
    margin-bottom: 2rem;
}

.contact-item h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.contact-item p {
    color: var(--text-light);
    font-size: 1.1rem;
}

/* 表单样式 */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-color);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* 页脚 */
.footer {
    background: var(--text-color);
    color: white;
    padding: 2rem 0;
    text-align: center;
    margin-top: 4rem;
}

.footer p {
    margin: 0.5rem 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-logo {
        height: 24px;
    }

    .nav-brand a {
        font-size: 0.9rem;
    }

    .hero-logo-img {
        max-width: 280px;
    }

    .hero-brand {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .page-header h1 {
        font-size: 2rem;
    }

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

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

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

    .nav-platforms {
        margin-left: 0;
        margin-top: 0.5rem;
    }
}