/* ============================================
  哇嘿餐饮 - AI智慧餐饮系统样式表
   ============================================ */

/* CSS Variables - 与定价页统一风格 */
:root {
    --primary: #FF6B35;
    --primary-dark: #E55A2B;
    --primary-light: #FF8C5A;
    --secondary: #1A1A2E;
    --accent: #FFD23F;
    --accent-dark: #F5C400;
    --dark: #0D0D1A;
    --dark-light: #1A1A2E;
    --gray: #6C757D;
    --gray-light: #94A3B8;
    --gray-lighter: #E9ECEF;
    --white: #FFFFFF;
    --bg-dark: #0D0D1A;
    --bg-light: #F8F9FA;
    --bg-card: #FFFFFF;
    --success: #28A745;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --radius: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--dark);
    background: var(--white);
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* Container */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 40px;
}

/* Section */
.section {
    padding: 100px 0;
    width: 100%;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(255,107,53,0.15);
    border: 1px solid var(--primary);
    color: var(--primary);
    font-size: 14px;
    font-weight: 500;
    border-radius: 20px;
    margin-bottom: 16px;
}

.section-title {
    font-size: 40px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section-desc {
    font-size: 18px;
    color: var(--gray);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition);
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
}

.navbar.scrolled {
    background: var(--white);
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    font-weight: 800;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    color: var(--dark);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--gray);
    transition: var(--transition);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

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

.nav-contact {
    display: flex;
    align-items: center;
    gap: 16px;
}

.contact-login {
    font-size: 14px;
    font-weight: 600;
    color: var(--white);
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    padding: 8px 20px;
    border-radius: 20px;
    transition: var(--transition);
}

.contact-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 14px rgba(255, 107, 53, 0.4);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--dark);
    transition: var(--transition);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    justify-content: center;
}

.hero-bg {
    display: none;
}

.hero .container {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 40px;
    align-items: center;
    max-width: 1280px;
}

.hero-content {
    animation: fadeInUp 0.8s ease-out;
    max-width: 600px;
}

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(255,107,53,0.2);
    border: 1px solid var(--primary);
    border-radius: 30px;
    font-size: 14px;
    font-weight: 500;
    color: var(--primary);
    margin-bottom: 24px;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

.hero-title {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.1;
    color: var(--dark);
    margin-bottom: 24px;
    letter-spacing: -0.03em;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 18px;
    color: var(--gray);
    line-height: 1.8;
    margin-bottom: 40px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 60px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    font-size: 16px;
    font-weight: 600;
    border-radius: var(--radius);
    transition: var(--transition);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    box-shadow: 0 4px 14px rgba(255, 107, 53, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.5);
}

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

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

.hero-stats {
    display: flex;
    gap: 40px;
}

.stat-item {
    text-align: center;
}

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

.stat-label {
    font-size: 14px;
    color: var(--gray);
}

/* Hero Visual */
.hero-visual {
    animation: fadeInRight 0.8s ease-out 0.2s both;
    max-width: 540px;
    width: 100%;
}

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

.dashboard-preview {
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
}

.preview-header {
    background: var(--dark-light);
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.preview-dots {
    display: flex;
    gap: 6px;
}

.preview-dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--gray);
}

.preview-dots span:nth-child(1) { background: #ef4444; }
.preview-dots span:nth-child(2) { background: #f59e0b; }
.preview-dots span:nth-child(3) { background: #22c55e; }

.preview-title {
    font-size: 13px;
    color: var(--gray-light);
}

.preview-content {
    display: flex;
    height: 300px;
}

.preview-sidebar {
    width: 50px;
    background: var(--bg-light);
    padding: 16px 8px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.sidebar-item {
    height: 32px;
    background: var(--gray-lighter);
    border-radius: 6px;
}

.sidebar-item.active {
    background: var(--primary);
}

.preview-main {
    flex: 1;
    padding: 20px;
}

.preview-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 20px;
}

.preview-stat-card {
    background: var(--bg-light);
    padding: 12px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    gap: 10px;
}

.stat-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
}

.stat-icon.sales { background: linear-gradient(135deg, #ef4444, #f97316); }
.stat-icon.orders { background: linear-gradient(135deg, var(--primary), var(--primary-light)); }
.stat-icon.users { background: linear-gradient(135deg, var(--accent), var(--accent-light)); }

.stat-info {
    display: flex;
    flex-direction: column;
}

.stat-val {
    font-size: 14px;
    font-weight: 600;
    color: var(--dark);
}

.stat-name {
    font-size: 11px;
    color: var(--gray);
}

.preview-chart {
    height: 140px;
    background: var(--bg-light);
    border-radius: var(--radius);
    padding: 16px;
    display: flex;
    align-items: flex-end;
}

.chart-bars {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    width: 100%;
    height: 100%;
}

.bar {
    flex: 1;
    background: linear-gradient(180deg, var(--primary), var(--primary-light));
    border-radius: 4px 4px 0 0;
    transition: var(--transition);
}

.bar.highlight {
    background: linear-gradient(180deg, var(--accent), var(--accent-light));
}

/* ============================================
   Version Section (已移除，将在HTML中删除)
   ============================================ */

.version-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.version-card {
    background: rgba(255,255,255,0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-lg);
    padding: 32px;
    position: relative;
    transition: var(--transition);
}

.version-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.3);
    border-color: var(--primary);
}

.version-card.popular,
.version-card.premium {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border: 2px solid transparent;
}

.version-card.popular .version-badge,
.version-card.premium .version-badge {
    background: var(--accent);
    color: var(--secondary);
}

.version-card.popular .version-name,
.version-card.premium .version-name,
.version-card.popular .version-desc,
.version-card.premium .version-desc,
.version-card.popular .version-features li,
.version-card.premium .version-features li {
    color: var(--white);
}

.version-card .version-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 16px;
    background: var(--primary);
    color: var(--white);
    font-size: 12px;
    font-weight: 600;
    border-radius: 20px;
}

.version-name {
    font-size: 20px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 16px;
    text-align: center;
}

.version-price {
    text-align: center;
    margin-bottom: 16px;
}

.price-symbol {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary);
}

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

.price-period {
    font-size: 14px;
    color: var(--gray);
}

.version-desc {
    font-size: 14px;
    color: var(--gray);
    text-align: center;
    margin-bottom: 24px;
    line-height: 1.6;
}

.version-card.popular .price-symbol,
.version-card.premium .price-symbol,
.version-card.popular .price-num,
.version-card.premium .price-num,
.version-card.popular .price-period,
.version-card.premium .price-period {
    color: var(--white);
}

.version-features {
    margin-bottom: 24px;
}

.version-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--dark);
    margin-bottom: 12px;
}

.version-features svg {
    color: var(--accent);
    flex-shrink: 0;
}

.version-btn {
    width: 100%;
    padding: 12px;
    background: rgba(255,255,255,0.1);
    color: var(--white);
    font-weight: 600;
    border-radius: var(--radius);
    transition: var(--transition);
    border: 1px solid rgba(255,255,255,0.2);
}

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

.version-btn.primary {
    background: var(--accent);
    color: var(--secondary);
    border-color: var(--accent);
}

.version-btn.primary:hover {
    background: var(--white);
    box-shadow: 0 4px 14px rgba(255,210,63,0.4);
}

.version-btn.primary:hover {
    box-shadow: 0 4px 14px rgba(255, 107, 53, 0.4);
}

/* ============================================
   Addon Section
   ============================================ */
.addon-section {
    background: var(--bg-light);
}

.addon-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 40px;
}

.addon-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 24px;
    text-align: center;
    border: 1px solid var(--gray-lighter);
    transition: var(--transition);
}

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

.addon-icon {
    font-size: 32px;
    margin-bottom: 12px;
}

.addon-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
}

.addon-price {
    font-size: 16px;
    font-weight: 700;
    color: var(--primary);
}

.addon-service {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 600px;
    margin: 0 auto;
}

.service-card {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    border-radius: var(--radius-lg);
    padding: 32px;
    text-align: center;
}

.service-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
}

.service-card p {
    font-size: 14px;
    opacity: 0.9;
    margin-bottom: 12px;
}

.service-price {
    font-size: 24px;
    font-weight: 700;
    color: var(--accent);
}

/* ============================================
   Resolve Section
   ============================================ */
.resolve-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.resolve-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 32px;
    border: 1px solid var(--gray-lighter);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(20px);
}

.resolve-card.animate {
    opacity: 1;
    transform: translateY(0);
}

.resolve-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
}

.resolve-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.resolve-icon svg {
    color: var(--white);
}

.resolve-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 12px;
}

.resolve-desc {
    font-size: 15px;
    color: var(--gray);
    line-height: 1.7;
    margin-bottom: 20px;
}

.resolve-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.resolve-tags span {
    padding: 6px 12px;
    background: var(--bg-light);
    color: var(--gray);
    font-size: 13px;
    border-radius: 20px;
}

/* ============================================
   Pain Points Section
   ============================================ */
.pain-section {
    background: linear-gradient(135deg, #1A1A2E 0%, #16213E 100%);
    color: var(--white);
}

.pain-section .section-tag {
    background: rgba(255,107,53,0.2);
    border-color: var(--primary);
    color: var(--primary);
}

.pain-section .section-title {
    color: var(--white);
}

.pain-section .section-desc {
    color: rgba(255,255,255,0.7);
}

.pain-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.pain-card {
    background: rgba(255,255,255,0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition);
}

.pain-card:hover {
    transform: translateY(-8px);
    background: rgba(255,255,255,0.1);
    border-color: var(--primary);
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.pain-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.pain-icon svg {
    color: white;
}

.pain-icon-red { background: linear-gradient(135deg, #ef4444, #f97316); }
.pain-icon-orange { background: linear-gradient(135deg, #f59e0b, #fb923c); }
.pain-icon-purple { background: linear-gradient(135deg, #8b5cf6, #a78bfa); }
.pain-icon-blue { background: linear-gradient(135deg, #3b82f6, #60a5fa); }

.pain-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 12px;
}

.pain-desc {
    font-size: 15px;
    color: rgba(255,255,255,0.7);
    line-height: 1.7;
    margin-bottom: 20px;
}

.pain-solution {
    background: rgba(255,107,53,0.15);
    border-left: 3px solid var(--primary);
    padding: 12px 16px;
    border-radius: 0 8px 8px 0;
}

.solution-label {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 6px;
}

.pain-solution p {
    font-size: 14px;
    color: var(--white);
    line-height: 1.5;
}

@media (max-width: 1024px) {
    .pain-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .pain-grid {
        grid-template-columns: 1fr;
    }
    
    .pain-card {
        padding: 24px;
    }
}

/* ============================================
   Feature Section
   ============================================ */
.feature-section {
    background: var(--bg-light);
}

.feature-showcase {
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.feature-tabs {
    display: flex;
    background: var(--dark-light);
    padding: 8px;
    gap: 8px;
}

.feature-tab {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px;
    color: var(--gray-light);
    font-weight: 500;
    border-radius: var(--radius);
    transition: var(--transition);
}

.feature-tab:hover {
    color: var(--white);
}

.feature-tab.active {
    background: var(--white);
    color: var(--dark);
}

.tab-icon {
    display: flex;
}

.feature-panels {
    padding: 40px;
}

.feature-panel {
    display: none;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.feature-panel.active {
    display: grid;
    animation: fadeIn 0.4s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.panel-content h3 {
    font-size: 28px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 16px;
}

.panel-content p {
    font-size: 16px;
    color: var(--gray);
    line-height: 1.7;
    margin-bottom: 24px;
}

.panel-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.panel-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 15px;
    color: var(--dark);
}

.panel-list li::before {
    content: '';
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
}

.panel-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 300px;
}

/* Visual Cards */
.visual-cards {
    display: flex;
    align-items: center;
    gap: 20px;
}

.v-card {
    width: 100px;
    height: 120px;
    background: var(--white);
    border: 2px solid var(--gray-lighter);
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: var(--transition);
}

.v-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
}

.v-card-icon {
    width: 40px;
    height: 40px;
    background: var(--bg-light);
    border-radius: 8px;
}

.v-card span {
    font-size: 13px;
    color: var(--gray);
}

.v-connector {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.connector-line {
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 2px;
}

.v-connector span {
    font-size: 12px;
    color: var(--primary);
    font-weight: 500;
}

/* Device Showcase */
.device-showcase {
    display: flex;
    align-items: flex-end;
    gap: 20px;
}

.device {
    background: var(--dark);
    border-radius: 12px;
}

.device.phone {
    width: 60px;
    height: 100px;
    border-radius: 8px;
}

.device.tablet {
    width: 100px;
    height: 140px;
    border-radius: 12px;
}

.device.desktop {
    width: 160px;
    height: 100px;
    border-radius: 8px 8px 0 0;
}

/* AI Demo */
.ai-demo {
    display: flex;
    align-items: center;
    gap: 16px;
}

.ai-card {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.ai-icon {
    width: 32px;
    height: 32px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 8px;
}

.ai-card span {
    font-size: 12px;
    color: var(--white);
    font-weight: 500;
}

.ai-arrow {
    width: 40px;
    height: 2px;
    background: var(--gray-lighter);
    position: relative;
}

.ai-arrow::after {
    content: '';
    position: absolute;
    right: 0;
    top: -4px;
    border: 5px solid transparent;
    border-left-color: var(--gray-lighter);
}

/* Simple Flow */
.simple-flow {
    display: flex;
    align-items: center;
    gap: 20px;
}

.flow-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.step-num {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: var(--white);
    font-size: 20px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

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

.flow-arrow {
    width: 60px;
    height: 2px;
    background: var(--gray-lighter);
    position: relative;
}

.flow-arrow::after {
    content: '';
    position: absolute;
    right: 0;
    top: -4px;
    border: 5px solid transparent;
    border-left-color: var(--gray-lighter);
}

/* ============================================
   TriShop Section
   ============================================ */
.trishop-section {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    color: var(--dark);
}

.trishop-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.trishop-info .section-tag {
    background: rgba(255, 107, 53, 0.15);
    color: var(--primary);
}

.trishop-info .section-title {
    color: var(--dark);
}

.trishop-desc {
    font-size: 17px;
    color: var(--gray);
    line-height: 1.8;
    margin-bottom: 32px;
}

.trishop-features {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.tf-item {
    display: flex;
    align-items: center;
    gap: 16px;
}

.tf-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
}

.tf-icon.shop { background: linear-gradient(135deg, #8b5cf6, #a78bfa); }
.tf-icon.delivery { background: linear-gradient(135deg, #f59e0b, #fbbf24); }
.tf-icon.pickup { background: linear-gradient(135deg, var(--accent), var(--accent-light)); }

.tf-text h4 {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 4px;
}

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

.trishop-visual {
    display: flex;
    justify-content: center;
}

.trishop-circle {
    width: 350px;
    height: 350px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.center-dot {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 700;
    color: var(--white);
    z-index: 2;
}

.orbit {
    position: absolute;
    width: 120px;
    height: 120px;
    border: 2px dashed var(--gray-lighter);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: rotate 20s linear infinite;
}

.orbit span {
    position: absolute;
    width: 80px;
    height: 36px;
    background: var(--white);
    border: 1px solid var(--gray-lighter);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 500;
    color: var(--dark);
    box-shadow: var(--shadow);
}

.orbit-shop { animation-duration: 25s; }
.orbit-shop span { top: -50px; left: 50%; transform: translateX(-50%); }

.orbit-delivery { animation-duration: 30s; animation-direction: reverse; }
.orbit-delivery span { bottom: -50px; left: 50%; transform: translateX(-50%); }

.orbit-pickup { animation-duration: 35s; }
.orbit-pickup span { right: -60px; top: 50%; transform: translateY(-50%); }

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ============================================
   Partner Section
   ============================================ */
.partner-section {
    background: var(--white);
}

.partner-grid {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 32px;
}

.partner-item {
    padding: 20px 40px;
    background: var(--bg-light);
    border-radius: var(--radius);
    font-size: 16px;
    font-weight: 600;
    color: var(--gray);
    transition: var(--transition);
}

.partner-item:hover {
    background: var(--dark);
    color: var(--white);
    transform: translateY(-2px);
}

/* ============================================
   About Section
   ============================================ */
.about-section {
    background: var(--bg-light);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.about-desc {
    font-size: 16px;
    color: var(--gray);
    line-height: 1.8;
    margin-bottom: 32px;
}

.about-stats {
    display: flex;
    gap: 40px;
    margin-bottom: 32px;
}

.a-stat {
    text-align: center;
}

.a-num {
    display: block;
    font-size: 36px;
    font-weight: 700;
    color: var(--primary);
}

.a-label {
    font-size: 14px;
    color: var(--gray);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 15px;
    color: var(--dark);
}

.contact-item svg {
    color: var(--primary);
}

/* Contact Form */
.about-form {
    background: var(--white);
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.about-form h3 {
    font-size: 24px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
}

.form-desc {
    font-size: 14px;
    color: var(--gray);
    margin-bottom: 24px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--gray-lighter);
    border-radius: var(--radius);
    font-size: 15px;
    color: var(--dark);
    transition: var(--transition);
}

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

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.submit-btn {
    padding: 16px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    font-size: 16px;
    font-weight: 600;
    border-radius: var(--radius);
    transition: var(--transition);
}

.submit-btn:hover {
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.4);
    transform: translateY(-2px);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--dark);
    color: var(--white);
    padding: 60px 0 0;
}

.footer .logo-text {
    color: var(--white);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--gray);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}

.footer-logo .logo-icon {
    background: linear-gradient(135deg, var(--primary), var(--accent));
}

.footer-logo .logo-text {
    color: var(--white);
    font-size: 20px;
    font-weight: 700;
}

.footer-desc {
    font-size: 14px;
    color: var(--gray-light);
    line-height: 1.7;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.link-group h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
}

.link-group a {
    display: block;
    font-size: 14px;
    color: var(--gray-light);
    margin-bottom: 10px;
    transition: var(--transition);
}

.link-group a:hover {
    color: var(--primary);
}

.footer-bottom {
    padding: 20px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    font-size: 13px;
    color: var(--gray);
}

/* ============================================
   Download Section
   ============================================ */
.download-section {
    background: var(--white);
}

.download-cards {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.download-card {
    background: var(--white);
    border: 2px solid var(--gray-lighter);
    border-radius: var(--radius-lg);
    padding: 40px;
    text-align: center;
    width: 280px;
    transition: var(--transition);
}

.download-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
}

.download-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.download-icon svg {
    color: var(--white);
}

.download-icon.wechat {
    background: linear-gradient(135deg, #07c160, #06ad56);
}

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

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

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

.download-card p {
    font-size: 14px;
    color: var(--gray);
    margin-bottom: 20px;
}

.download-btn {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    font-weight: 600;
    border-radius: var(--radius);
    transition: var(--transition);
}

.download-btn:hover {
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.4);
}

.download-btn.disabled {
    background: var(--gray-lighter);
    color: var(--gray);
    cursor: not-allowed;
}

/* ============================================
   Floating Contact
   ============================================ */
.floating-contact {
    position: fixed;
    bottom: 30px;
    right: 30px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 999;
}

.fc-phone,
.fc-email {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
}

.fc-phone:hover,
.fc-email:hover {
    transform: scale(1.1);
}

/* ============================================
   Back to Top
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 30px;
    left: 30px;
    width: 48px;
    height: 48px;
    background: var(--primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 998;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
    .container {
        max-width: 100%;
        padding: 0 40px;
    }

    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
        padding: 0 40px;
    }

    .hero-title {
        font-size: 44px;
    }

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

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

    .hero-visual {
        display: none;
    }

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

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

    .feature-panels {
        padding: 24px;
    }

    .feature-panel {
        grid-template-columns: 1fr;
        gap: 24px;
    }

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

    .trishop-visual {
        order: -1;
    }

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

@media (max-width: 768px) {
    /* 容器优化 - 左侧预留合理空间 */
    .container {
        padding: 0 16px;
        max-width: 100%;
        width: 100%;
        margin: 0 auto;
    }

    /* 导航 */
    .nav-container {
        padding: 0 16px;
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        gap: 0;
        box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        border-radius: 0 0 16px 16px;
        z-index: 100;
    }

    .nav-menu.show {
        display: flex;
    }

    .nav-menu li {
        width: 100%;
    }

    .nav-menu .nav-link {
        display: block;
        padding: 14px 0;
        text-align: center;
        border-bottom: 1px solid var(--gray-lighter);
        color: var(--dark);
        font-size: 16px;
    }

    .nav-menu .nav-link:hover {
        color: var(--primary);
        background: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .nav-contact {
        display: none;
    }

    /* Hero区域 - 隐藏右侧特效 */
    .hero {
        padding: 100px 0 60px;
        min-height: auto;
    }

    .hero-visual {
        display: none !important;
    }

    .hero-content {
        max-width: 100%;
        text-align: center;
        padding: 0 10px;
    }

    .hero-badge {
        font-size: 12px;
        padding: 6px 12px;
    }

    .hero-title {
        font-size: 28px;
        line-height: 1.3;
    }

    .hero-desc {
        font-size: 14px;
        line-height: 1.6;
    }

    .hero-desc br {
        display: none;
    }

    .hero-buttons {
        flex-direction: column;
        gap: 12px;
        align-items: center;
    }

    .hero-btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
        gap: 24px;
    }

    .stat-item {
        text-align: center;
    }

    /* Hero特效隐藏 */
    .hero-bg,
    .hero-visual {
        display: none !important;
    }

    .section {
        padding: 50px 0;
    }

    .section-header {
        padding: 0 10px;
        text-align: center;
    }

    .section-tag {
        font-size: 12px;
    }

    .section-title {
        font-size: 24px;
        line-height: 1.3;
    }

    .section-desc {
        font-size: 14px;
    }

    /* 解决方案卡片 */
    .resolve-grid {
        grid-template-columns: 1fr;
        justify-items: center;
        gap: 16px;
    }

    .resolve-card {
        width: 100%;
        max-width: 100%;
        padding: 20px;
        text-align: center;
    }

    .resolve-icon {
        margin: 0 auto 16px;
        width: 56px;
        height: 56px;
    }

    .resolve-icon svg {
        width: 28px;
        height: 28px;
    }

    .resolve-tags {
        justify-content: center;
    }

    /* 版本方案 */
    .version-grid {
        grid-template-columns: 1fr;
        justify-items: center;
    }

    .version-card {
        width: 100%;
        max-width: 100%;
        padding: 24px 16px;
    }

    .addon-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
        justify-items: center;
    }

    .addon-card {
        width: 100%;
        max-width: 100%;
        padding: 16px 12px;
    }

    .addon-icon {
        font-size: 24px;
    }

    .addon-name {
        font-size: 13px;
    }

    .addon-service {
        grid-template-columns: 1fr;
        justify-items: center;
    }

    .addon-service-card {
        width: 100%;
        max-width: 100%;
    }

    /* 特色功能标签 */
    .feature-tabs {
        flex-direction: column;
        align-items: center;
        gap: 8px;
    }

    .feature-tab {
        justify-content: center;
        padding: 12px 16px;
        width: 100%;
        max-width: 100%;
        font-size: 14px;
    }

    /* 功能面板 */
    .feature-panels {
        padding: 16px;
    }

    .feature-panel {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .feature-content {
        text-align: center;
    }

    .feature-content h3 {
        font-size: 20px;
    }

    .feature-list {
        text-align: left;
    }

    /* 合作伙伴 */
    .partner-grid {
        gap: 12px;
        justify-items: center;
        flex-wrap: wrap;
    }

    .partner-item {
        padding: 12px 16px;
        font-size: 13px;
        width: auto;
        max-width: 100%;
    }

    /* 关于我们 */
    .about-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .about-stats {
        flex-direction: row;
        justify-content: center;
        flex-wrap: wrap;
        gap: 20px;
    }

    .about-stat {
        text-align: center;
    }

    /* 确保所有卡片内容居中 */
    .features-grid,
    .benefits-grid,
    .steps-grid,
    .products-grid {
        justify-items: center;
        grid-template-columns: 1fr;
    }

    .feature-card,
    .benefit-card,
    .step-card,
    .product-card {
        width: 100%;
        max-width: 100%;
        padding: 20px 16px;
        text-align: center;
    }

    /* 三店一体 */
    .trishop-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .trishop-visual {
        order: -1;
        display: none;
    }

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

    /* 底部CTA */
    .cta-content {
        padding: 0 16px;
        text-align: center;
    }

    .cta-content h2 {
        font-size: 24px;
    }

    .cta-buttons {
        flex-direction: column;
        gap: 12px;
        align-items: center;
    }

    .cta-btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }

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

    .footer-brand {
        align-items: center;
    }

    .footer-links {
        grid-template-columns: repeat(2, 1fr);
        justify-items: center;
    }

    .footer-link {
        text-align: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }

    .download-cards {
        flex-direction: column;
        align-items: center;
    }

    .download-card {
        width: 100%;
        max-width: 360px;
    }

    .trishop-circle {
        width: 280px;
        height: 280px;
    }

    .orbit {
        width: 90px;
        height: 90px;
    }

    .floating-contact {
        bottom: 20px;
        right: 20px;
    }

    .back-to-top {
        bottom: 20px;
        left: 20px;
    }
}

/* ============================================
   Animations
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}