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

:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --secondary-color: #10b981;
    --accent-color: #f59e0b;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --bg-light: #f9fafb;
    --bg-white: #ffffff;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans TC', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    border-radius: 3px;
    transition: all 0.3s ease;
}

/* 英雄区 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
    padding: 100px 20px 60px;
    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"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
}

.hero-title {
    font-size: 3rem;
    font-weight: 900;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    animation: fadeInUp 1s ease;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.95;
    animation: fadeInUp 1s ease 0.2s backwards;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease 0.4s backwards;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

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

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

.btn-secondary {
    background: white;
    color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

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

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

/* 通用区块样式 */
section {
    padding: 80px 20px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.section-subtitle {
    font-size: 1.125rem;
    text-align: center;
    color: var(--text-light);
    margin-bottom: 3rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* 核心服务介绍 */
.intro-section {
    background: var(--bg-light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

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

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.7;
}

/* 专业服务 */
.services-section {
    background: white;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.service-item {
    padding: 2rem;
    border-radius: 12px;
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
}

.service-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.service-number {
    display: inline-block;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.service-item h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

.service-item p {
    color: var(--text-light);
}

/* 统计数据 */
.stats-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

.stats-section .section-title {
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin: 3rem 0;
}

.stat-item {
    padding: 2rem;
}

.stat-number {
    font-size: 4rem;
    font-weight: 900;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #fff, #f0f0f0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.stat-item p {
    opacity: 0.9;
    font-size: 1rem;
}

.stats-description {
    max-width: 800px;
    margin: 2rem auto 0;
    font-size: 1.125rem;
    opacity: 0.95;
    line-height: 1.8;
}

/* 管理顾问服务 */
.consulting-section {
    background: var(--bg-light);
}

.consulting-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.consulting-highlights h3,
.consulting-deliverables h3 {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.consulting-highlights ul {
    list-style: none;
}

.consulting-highlights li {
    padding: 0.75rem 0;
    padding-left: 2rem;
    position: relative;
    color: var(--text-light);
}

.consulting-highlights li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    font-weight: 700;
    font-size: 1.25rem;
}

.deliverables-grid {
    display: grid;
    gap: 1rem;
}

.deliverable-item {
    background: white;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
    box-shadow: var(--shadow-sm);
    font-weight: 500;
}

.cta-box {
    text-align: center;
    margin: 3rem 0;
}

.process-note {
    text-align: center;
    color: var(--text-light);
    font-size: 1rem;
    margin-top: 2rem;
}

/* 食品与化妆品批发 */
.wholesale-section {
    background: white;
}

.wholesale-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.wholesale-card {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 16px;
    transition: all 0.3s ease;
}

.wholesale-card:hover {
    background: white;
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

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

.wholesale-card > p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.wholesale-card ul {
    list-style: none;
}

.wholesale-card li {
    padding: 0.5rem 0;
    padding-left: 1.75rem;
    position: relative;
    color: var(--text-dark);
}

.wholesale-card li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-size: 1.5rem;
}

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

/* 国际贸易服务 */
.trade-section {
    background: var(--bg-light);
}

.trade-process {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.process-step {
    text-align: center;
    padding: 2rem 1rem;
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.process-step:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    font-weight: 700;
    margin: 0 auto 1.5rem;
}

.process-step h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

.process-step p {
    color: var(--text-light);
    font-size: 0.95rem;
}

.trade-advantages {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    margin-bottom: 3rem;
}

.trade-advantages h3 {
    font-size: 1.75rem;
    text-align: center;
    margin-bottom: 2rem;
    color: var(--text-dark);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.advantage-item {
    padding: 1.25rem;
    background: var(--bg-light);
    border-radius: 8px;
    text-align: center;
    font-weight: 500;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.advantage-item:hover {
    border-color: var(--primary-color);
    background: white;
}

.cta-box p {
    margin-bottom: 1.5rem;
    color: var(--text-light);
    font-size: 1.125rem;
}

/* 食品顾问服务 */
.food-consulting-section {
    background: white;
}

.food-process {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.food-step {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 12px;
    position: relative;
    transition: all 0.3s ease;
}

.food-step:hover {
    background: white;
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.step-badge {
    position: absolute;
    top: -15px;
    left: 20px;
    width: 40px;
    height: 40px;
    background: var(--accent-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
}

.food-step h3 {
    font-size: 1.25rem;
    margin-top: 1rem;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

.food-step p {
    color: var(--text-light);
}

.food-services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.food-service-card {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.food-service-card:hover {
    border-color: var(--primary-color);
    background: white;
    box-shadow: var(--shadow-md);
}

.food-service-card h4 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

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

.why-choose {
    background: var(--bg-light);
    padding: 2.5rem;
    border-radius: 16px;
    margin-bottom: 2rem;
}

.why-choose h3 {
    font-size: 1.75rem;
    text-align: center;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.why-choose p {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 1rem;
    line-height: 1.8;
}

.free-service {
    background: white;
    padding: 1rem;
    border-radius: 8px;
    border-left: 4px solid var(--accent-color);
    margin-top: 1.5rem !important;
}

/* 关于我们 */
.about-section {
    background: var(--bg-light);
}

.about-intro {
    text-align: center;
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 3rem;
    line-height: 1.8;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.value-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.value-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

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

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

/* 时间线 */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 4rem auto;
    padding: 2rem 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--primary-color);
    transform: translateX(-50%);
}

.timeline-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
    position: relative;
}

.timeline-item:nth-child(even) .timeline-year {
    order: 2;
    text-align: left;
}

.timeline-item:nth-child(even) .timeline-content {
    order: 1;
    text-align: right;
}

.timeline-year {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: 2rem;
}

.timeline-item:nth-child(even) .timeline-year {
    justify-content: flex-start;
    padding-right: 0;
    padding-left: 2rem;
}

.timeline-content {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
}

.timeline-content h4 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.timeline-content p {
    color: var(--text-light);
}

.quote-box {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 3rem;
    border-radius: 16px;
    text-align: center;
    margin-top: 3rem;
}

.quote-box p {
    font-size: 1.5rem;
    font-weight: 600;
    font-style: italic;
}

/* 联系我们 */
.contact-section {
    background: white;
}

.contact-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.contact-info {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 16px;
}

.contact-info h3 {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.info-item {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-light);
}

.info-item:last-of-type {
    border-bottom: none;
}

.info-item strong {
    color: var(--text-dark);
    margin-right: 0.5rem;
}

.business-scope {
    margin-top: 1.5rem;
    padding: 1.5rem;
    background: white;
    border-radius: 8px;
}

.business-scope p {
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 0.5rem;
}

.business-scope p:first-child {
    color: var(--text-dark);
    font-weight: 600;
}

.contact-form {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 16px;
}

.contact-form h3 {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.contact-form > p {
    color: var(--text-light);
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-family: 'Noto Sans TC', sans-serif;
    font-size: 1rem;
    transition: all 0.3s ease;
}

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

.form-group textarea {
    resize: vertical;
}

.contact-form button {
    width: 100%;
}

.download-section {
    text-align: center;
    margin-bottom: 2rem;
}

.disclaimer {
    background: #fef3c7;
    border: 2px solid #fbbf24;
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
}

.disclaimer p {
    color: #92400e;
    margin: 0;
}

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

.footer p {
    margin: 0.5rem 0;
    opacity: 0.8;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: white;
        width: 100%;
        padding: 2rem;
        box-shadow: var(--shadow-lg);
        transition: left 0.3s ease;
    }

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

    .nav-toggle {
        display: flex;
    }

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

    .hero-subtitle {
        font-size: 1rem;
    }

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

    .features-grid,
    .services-grid,
    .wholesale-grid,
    .trade-process,
    .food-process,
    .values-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

    .timeline::before {
        left: 30px;
    }

    .timeline-item {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .timeline-year {
        justify-content: flex-start !important;
        padding-left: 80px !important;
        padding-right: 0 !important;
        font-size: 1.5rem;
    }

    .timeline-content {
        text-align: left !important;
        margin-left: 80px;
    }

    .timeline-item:nth-child(even) .timeline-year {
        order: 1;
    }

    .timeline-item:nth-child(even) .timeline-content {
        order: 2;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

    .cta-buttons {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.75rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

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

    .contact-info,
    .contact-form {
        min-width: auto;
    }
}

/* 添加平滑滚动和淡入效果 */
.fade-in {
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
}

/* 额外的互动效果 */
.service-item,
.feature-card,
.wholesale-card,
.process-step,
.food-step,
.value-card {
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards;
}

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