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

:root {
    --primary: #d97706;
    --primary-light: #f59e0b;
    --primary-dark: #92400e;
    --secondary: #fef3c7;
    --secondary-light: #fffbeb;
    --bg: #fafaf9;
    --text: #1c1917;
    --text-light: #57534e;
    --text-lighter: #a8a29e;
    --border: #e7e5e4;
    --card-bg: #ffffff;
    --radius: 16px;
    --shadow: 0 4px 20px rgba(0,0,0,0.06);
    --shadow-hover: 0 8px 30px rgba(0,0,0,0.12);
    --font: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
}

html, body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* 移动端容器 */
.container {
    width: 100%;
    max-width: 450px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    transition: box-shadow 0.3s;
}
.navbar.scrolled {
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
    max-width: 450px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.logo-icon {
    width: 32px;
    height: 32px;
}

.logo-text {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-dark);
}

.nav-links {
    display: none;
    gap: 0;
    flex-direction: column;
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
    padding: 10px 0;
    max-width: 450px;
    margin: 0 auto;
}

.nav-links.open {
    display: flex;
}

.nav-link {
    padding: 12px 20px;
    text-decoration: none;
    color: var(--text);
    font-size: 15px;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-link.active, .nav-link:hover {
    color: var(--primary);
}

.hamburger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.hamburger span {
    width: 24px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: 0.3s;
}

.mobile-nav-placeholder {
    height: 56px;
}

/* Hero区 */
.hero {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
    color: #fff;
    text-align: center;
    padding: 60px 20px 50px;
    position: relative;
    overflow: hidden;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30px;
    left: -20px;
    right: -20px;
    height: 60px;
    background: var(--bg);
    border-radius: 50% 50% 0 0;
}

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

.hero-logo {
    width: 80px;
    height: auto;
    margin-bottom: 16px;
}

.hero-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 8px;
}

.hero-slogan {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    opacity: 0.95;
}

.hero-desc {
    font-size: 15px;
    opacity: 0.85;
    margin-bottom: 28px;
    max-width: 360px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: 2px solid transparent;
    min-height: 44px;
}

.btn-primary {
    background: #fff;
    color: var(--primary-dark);
    border-color: #fff;
}

.btn-primary:hover {
    background: var(--secondary);
    border-color: var(--secondary);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(255,255,255,0.3);
}

.btn-outline {
    background: transparent;
    color: #fff;
    border-color: rgba(255,255,255,0.6);
}

.btn-outline:hover {
    background: rgba(255,255,255,0.15);
    border-color: #fff;
}

.btn-block {
    width: 100%;
}

.btn-lg {
    padding: 14px 40px;
    font-size: 17px;
}

/* 通用section */
.section {
    padding: 50px 0;
}

.section-title {
    font-size: 24px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 8px;
    color: var(--text);
}

.section-desc {
    text-align: center;
    color: var(--text-light);
    font-size: 14px;
    margin-bottom: 32px;
    max-width: 360px;
    margin-left: auto;
    margin-right: auto;
}

/* 特色网格 */
.features-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.feature-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 24px 16px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid var(--border);
}

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

.feature-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--secondary);
    border-radius: 12px;
    color: var(--primary);
}

.feature-card h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 6px;
}

.feature-card p {
    font-size: 13px;
    color: var(--text-light);
}

/* 品牌网格 */
.brands-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.brand-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 20px 16px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid var(--border);
    cursor: pointer;
}

.brand-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.brand-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
}

.brand-avatar {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    flex-shrink: 0;
}

.brand-card h3 {
    font-size: 16px;
    font-weight: 600;
}

.brand-card .brand-cat {
    font-size: 12px;
    color: var(--primary);
    background: var(--secondary);
    padding: 2px 10px;
    border-radius: 20px;
    display: inline-block;
    margin-bottom: 6px;
}

.brand-card p {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.5;
}

/* 数据统计 */
.stats {
    background: var(--primary-dark);
    color: #fff;
    padding: 40px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    text-align: center;
}

.stat-item {
    padding: 10px;
}

.stat-number {
    font-size: 32px;
    font-weight: 700;
    display: block;
    line-height: 1.2;
}

.stat-label {
    font-size: 13px;
    opacity: 0.8;
}

/* 招商机会列表 */
.opp-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.opp-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.opp-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.opp-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 8px;
}

.opp-card h3 {
    font-size: 17px;
    font-weight: 600;
}

.opp-card .opp-tag {
    font-size: 12px;
    background: var(--secondary);
    color: var(--primary-dark);
    padding: 2px 12px;
    border-radius: 20px;
    white-space: nowrap;
}

.opp-card .opp-brand {
    font-size: 13px;
    color: var(--text-lighter);
    margin-bottom: 6px;
}

.opp-card p {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 12px;
}

.opp-card .opp-meta {
    display: flex;
    gap: 16px;
    font-size: 12px;
    color: var(--text-lighter);
}

.opp-card .opp-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* CTA */
.cta-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: #fff;
    text-align: center;
    padding: 50px 20px;
}

.cta-section h2 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 10px;
}

.cta-section p {
    font-size: 15px;
    opacity: 0.9;
    margin-bottom: 24px;
}

/* 页脚 */
.footer {
    background: var(--text);
    color: #d6d3d1;
    padding: 40px 0 100px;
}

.footer-content {
    display: grid;
    gap: 24px;
}

.footer-brand .footer-logo {
    width: 120px;
    height: auto;
    margin-bottom: 10px;
    filter: brightness(10);
}

.footer-brand p {
    font-size: 13px;
    line-height: 1.6;
}

.footer-links h4, .footer-contact h4 {
    color: #fff;
    font-size: 15px;
    margin-bottom: 10px;
}

.footer-links a {
    display: block;
    color: #a8a29e;
    text-decoration: none;
    font-size: 13px;
    padding: 4px 0;
    transition: color 0.2s;
}

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

.footer-contact p {
    font-size: 13px;
    margin-bottom: 4px;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 16px;
    margin-top: 24px;
    text-align: center;
    font-size: 12px;
    color: #78716c;
}

/* 底部导航栏 */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    max-width: 450px;
    margin: 0 auto;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-around;
    align-items: center;
    height: 64px;
    z-index: 1000;
    padding: 0 4px;
}

.bottom-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    text-decoration: none;
    color: var(--text-lighter);
    font-size: 10px;
    transition: color 0.2s;
    padding: 4px 8px;
    min-width: 44px;
    min-height: 44px;
    justify-content: center;
}

.bottom-nav-item.active {
    color: var(--primary);
}

.bottom-nav-item svg {
    width: 22px;
    height: 22px;
}

/* 页面内页Hero */
.page-hero {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    color: #fff;
    text-align: center;
    padding: 50px 20px;
}

.page-hero h1 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
}

.page-hero p {
    font-size: 15px;
    opacity: 0.9;
}

/* 筛选栏 */
.filter-bar {
    margin-bottom: 24px;
}

.search-box {
    margin-bottom: 12px;
}

.search-box input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: 50px;
    font-size: 14px;
    outline: none;
    transition: border 0.2s;
}

.search-box input:focus {
    border-color: var(--primary);
}

.category-filter {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 6px 16px;
    border-radius: 20px;
    border: 1px solid var(--border);
    background: var(--card-bg);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--text-light);
    min-height: 36px;
}

.filter-btn.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

/* 关于页 */
.about-story p {
    font-size: 15px;
    color: var(--text-light);
    margin-bottom: 12px;
    line-height: 1.8;
}

.mission-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    margin-top: 20px;
}

.mission-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 24px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.mission-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-dark);
    margin-bottom: 8px;
}

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

.team-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 20px;
}

.team-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 20px 16px;
    text-align: center;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.team-avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
    font-size: 28px;
    color: var(--primary);
}

.team-card h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
}

.team-card .team-role {
    font-size: 13px;
    color: var(--primary);
    margin-bottom: 6px;
}

.team-card p {
    font-size: 12px;
    color: var(--text-lighter);
}

/* 联系页 */
.contact-wrap {
    display: grid;
    gap: 32px;
}

.contact-info h2 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 16px;
}

.contact-info p {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 8px;
}

.social-links {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}

.social-link {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--secondary);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.2s;
}

.social-link:hover {
    background: var(--primary);
    color: #fff;
}

.contact-form-wrap h2 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 16px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--text);
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: 12px;
    font-size: 14px;
    outline: none;
    transition: border 0.2s;
    font-family: var(--font);
}

.form-group input:focus, .form-group textarea:focus {
    border-color: var(--primary);
}

.form-success {
    background: #ecfdf5;
    border: 1px solid #a7f3d0;
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
    color: #065f46;
    font-size: 15px;
}

/* 文本工具 */
.text-center {
    text-align: center;
}

/* 响应式 - 桌面端 */
@media (min-width: 768px) {
    .container {
        max-width: 720px;
        padding: 0 40px;
    }

    .nav-container {
        max-width: 720px;
    }

    .nav-links {
        display: flex;
        flex-direction: row;
        position: static;
        background: transparent;
        border: none;
        padding: 0;
        gap: 24px;
    }

    .hamburger {
        display: none;
    }

    .hero {
        padding: 80px 40px 60px;
    }

    .hero-title {
        font-size: 40px;
    }

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

    .features-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .brands-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }

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

    .bottom-nav {
        display: none;
    }

    .footer {
        padding-bottom: 40px;
    }

    .team-grid {
        grid-template-columns: repeat(4, 1fr);
    }

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

    .mission-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .page-hero {
        padding: 70px 40px;
    }

    .page-hero h1 {
        font-size: 36px;
    }
}

@media (min-width: 1024px) {
    .container {
        max-width: 960px;
    }

    .nav-container {
        max-width: 960px;
    }
}

@media (min-width: 1200px) {
    .container {
        max-width: 1100px;
    }

    .nav-container {
        max-width: 1100px;
    }

    .brands-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .features-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}