/*
  1688代购系统 - 极简网格风格
  Website 60 - Minimal Grid Style
*/

:root {
    --primary: #1a1a1a;
    --secondary: #333;
    --accent: #666;
    --bg-light: #fafafa;
    --bg-white: #ffffff;
    --text-dark: #1a1a1a;
    --text-gray: #666;
    --border: #e5e5e5;
}

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

html {
    scroll-behavior: smooth;
}

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

/* Minimal Background */
.minimal-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background:
        linear-gradient(90deg, var(--border) 1px, transparent 1px),
        linear-gradient(var(--border) 1px, transparent 1px);
    background-size: 100px 100px;
    opacity: 0.5;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 25px;
}

/* Header */
.minimal-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    background: rgba(250, 250, 250, 0.95);
    border-bottom: 1px solid var(--border);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.minimal-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.logo-mark {
    width: 30px;
    height: 30px;
    background: var(--primary);
}

.logo-text {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-dark);
}

.minimal-nav ul {
    display: flex;
    list-style: none;
    gap: 35px;
}

.minimal-nav a {
    color: var(--text-gray);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.3s ease;
}

.minimal-nav a:hover,
.minimal-nav a.active {
    color: var(--text-dark);
}

.minimal-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-dark);
    cursor: pointer;
}

/* Hero Section */
.minimal-hero {
    min-height: 100vh;
    padding: 140px 0 80px;
    display: flex;
    align-items: center;
}

.minimal-hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-gray);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 20px;
}

.minimal-title {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 25px;
    letter-spacing: -1px;
}

.minimal-title span {
    display: block;
    color: var(--text-gray);
    font-weight: 400;
}

.minimal-desc {
    font-size: 18px;
    color: var(--text-gray);
    margin-bottom: 40px;
    line-height: 1.8;
    max-width: 450px;
}

.hero-actions {
    display: flex;
    gap: 20px;
}

.minimal-btn {
    display: inline-flex;
    align-items: center;
    padding: 14px 32px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

.minimal-btn.primary {
    background: var(--primary);
    color: white;
    border: none;
}

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

.minimal-btn.secondary {
    background: transparent;
    color: var(--text-dark);
    border: 1px solid var(--border);
}

.minimal-btn.secondary:hover {
    border-color: var(--primary);
}

/* Hero Grid Visual */
.hero-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
}

.grid-block {
    aspect-ratio: 1;
    background: var(--primary);
    transition: all 0.3s ease;
}

.grid-block:nth-child(2) { background: var(--secondary); }
.grid-block:nth-child(3) { background: var(--accent); opacity: 0.7; }
.grid-block:nth-child(4) { background: var(--accent); opacity: 0.5; }
.grid-block:nth-child(5) { background: var(--secondary); opacity: 0.7; }
.grid-block:nth-child(6) { background: var(--primary); opacity: 0.8; }

.grid-block:hover {
    transform: scale(1.05);
}

/* Section Header */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-label {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-gray);
    text-transform: uppercase;
    letter-spacing: 2px;
    padding: 8px 20px;
    border: 1px solid var(--border);
    margin-bottom: 15px;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    letter-spacing: -1px;
}

/* Features Section */
.minimal-features {
    padding: 100px 0;
    background: var(--bg-white);
}

.features-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.feature-item {
    display: flex;
    gap: 25px;
    padding: 30px;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.feature-item:hover {
    border-color: var(--primary);
}

.feature-num {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-gray);
    opacity: 0.5;
}

.feature-content h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
}

.feature-content p {
    font-size: 15px;
    color: var(--text-gray);
}

/* Stats Section */
.minimal-stats {
    padding: 80px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
}

.stat-item {
    padding: 50px 30px;
    background: var(--bg-white);
    text-align: center;
    transition: background 0.3s ease;
}

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

.stat-value {
    font-size: 48px;
    font-weight: 700;
    display: inline;
}

.stat-suffix {
    font-size: 28px;
    font-weight: 600;
}

.stat-label {
    display: block;
    margin-top: 10px;
    font-size: 14px;
    color: var(--text-gray);
}

.stat-item:hover .stat-label {
    color: rgba(255, 255, 255, 0.8);
}

/* Users Section */
.minimal-users {
    padding: 100px 0;
    background: var(--bg-white);
}

.users-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
}

.user-item {
    padding: 40px 30px;
    background: var(--bg-white);
    text-align: center;
    transition: all 0.3s ease;
}

.user-item:hover {
    background: var(--bg-light);
}

.user-icon {
    font-size: 36px;
    margin-bottom: 18px;
}

.user-item h3 {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 10px;
}

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

/* Process Section */
.minimal-process {
    padding: 100px 0;
}

.process-list {
    display: flex;
    justify-content: center;
    align-items: center;
}

.process-item {
    flex: 1;
    max-width: 220px;
    text-align: center;
    padding: 30px 20px;
}

.process-num {
    width: 50px;
    height: 50px;
    margin: 0 auto 18px;
    background: var(--primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 700;
}

.process-text h3 {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 8px;
}

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

.process-divider {
    width: 60px;
    height: 1px;
    background: var(--border);
}

/* Contact Section */
.minimal-contact {
    padding: 80px 0;
}

.contact-box {
    padding: 60px;
    background: var(--bg-white);
    border: 1px solid var(--border);
    text-align: center;
}

.contact-box h2 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 10px;
}

.contact-box > p {
    color: var(--text-gray);
    margin-bottom: 40px;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
}

.contact-item {
    padding: 30px;
    background: var(--bg-light);
}

.item-label {
    display: block;
    font-size: 12px;
    color: var(--text-gray);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.item-value {
    font-size: 16px;
    font-weight: 600;
}

/* Footer */
.minimal-footer {
    padding: 40px 0 20px;
    background: var(--bg-white);
    border-top: 1px solid var(--border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
}

.footer-links {
    display: flex;
    gap: 30px;
}

.footer-links a {
    color: var(--text-gray);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--text-dark);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--border);
    font-size: 13px;
    color: var(--text-gray);
}

/* Page Hero Section - Used in sub-pages */
.page-hero {
    min-height: 60vh;
    padding: 140px 0 60px;
    display: flex;
    align-items: center;
    text-align: center;
}

.page-hero .container {
    max-width: 900px;
    margin: 0 auto;
}

.page-hero .hero-content {
    text-align: center;
}

.page-hero .hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(0, 0, 0, 0.05);
    border: 1px solid var(--primary);
    border-radius: 30px;
    font-size: 14px;
    color: var(--primary);
    margin-bottom: 20px;
}

.page-hero .hero-title {
    font-size: 48px;
    font-weight: 800;
    color: var(--text-dark);
    line-height: 1.2;
    margin-bottom: 20px;
}

.page-hero .hero-title .title-line {
    display: block;
}

.page-hero .hero-title .title-highlight {
    color: var(--primary);
}

.page-hero .hero-desc {
    font-size: 18px;
    color: var(--text-gray);
    max-width: 700px;
    margin: 0 auto;
}

/* Benefits Section - Used in sub-pages */
.benefits-section {
    padding: 100px 0;
    background: white;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.benefit-card {
    padding: 35px 25px;
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: 10px;
    text-align: center;
    transition: all 0.4s ease;
}

.benefit-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
}

.benefit-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.benefit-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.benefit-value {
    font-size: 42px;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 10px;
}

.benefit-desc {
    font-size: 14px;
    color: var(--text-gray);
}

/* Responsive */
@media (max-width: 1024px) {
    .minimal-hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-desc {
        max-width: none;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-grid {
        display: none;
    }

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

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

    .process-list {
        flex-wrap: wrap;
    }

    .process-divider {
        display: none;
    }

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

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

@media (max-width: 768px) {
    .minimal-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-light);
        padding: 20px;
        border-bottom: 1px solid var(--border);
    }

    .minimal-nav.active {
        display: block;
    }

    .minimal-nav ul {
        flex-direction: column;
        gap: 15px;
    }

    .minimal-toggle {
        display: block;
    }

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

    .page-hero {
        padding: 120px 0 40px;
        min-height: 50vh;
    }

    .page-hero .hero-title {
        font-size: 32px;
    }

    .stats-grid,
    .users-grid,
    .benefits-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        gap: 20px;
    }

    .benefit-value {
        font-size: 32px;
    }
}