/**
 * 小蒋臻行长途代驾 - 主样式表
 * 响应式设计，支持PC和移动端
 */

/* ========================================
   CSS变量
======================================== */
:root {
    /* 颜色系统 */
    --primary: #1E3A5F;
    --secondary: #2563EB;
    --accent: #F97316;
    --bg-light: #F8FAFC;
    --bg-dark: #0F172A;
    --text-primary: #1E293B;
    --text-secondary: #64748B;
    --text-light: #94A3B8;
    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;
    --border: #E2E8F0;
    --white: #FFFFFF;
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px 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);
    
    /* 圆角 */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* 间距 */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;
    --space-12: 48px;
    --space-16: 64px;
    --space-20: 80px;
    --space-24: 96px;
    
    /* 过渡 */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* 容器 */
    --container-max: 1280px;
    --container-padding: 24px;
}

/* ========================================
   基础重置
======================================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text-primary);
    background: var(--white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: var(--secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

ul, ol {
    list-style: none;
}

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

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

/* ========================================
   布局容器
======================================== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section {
    padding: var(--space-20) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-12);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--space-4);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

@media (max-width: 768px) {
    :root {
        --container-padding: 16px;
    }
    
    .section {
        padding: var(--space-12) 0;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
}

/* ========================================
   导航栏
======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0,0,0,0.06);
    transition: all var(--transition-base);
}

.header.scrolled {
    box-shadow: 0 4px 24px rgba(0,0,0,0.08);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
    flex-shrink: 0;
}

.logo-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--secondary), var(--primary));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.125rem;
    font-weight: 800;
}

.logo-text h1 {
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.2;
    margin: 0;
}

.logo-text span {
    font-size: 0.6875rem;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
    font-weight: 500;
    text-transform: uppercase;
}

.nav {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.nav-link {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.9375rem;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    position: relative;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.nav-link:hover {
    color: var(--secondary);
    background: rgba(37, 99, 235, 0.06);
}

.nav-link.active {
    color: var(--secondary);
    font-weight: 600;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: var(--secondary);
    border-radius: 2px;
}

/* 汉堡菜单按钮 */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-2);
    cursor: pointer;
    border: none;
    background: none;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
    transition: all var(--transition-base);
}

/* 移动端导航 */
.mobile-nav {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--white);
    padding: var(--space-6);
    flex-direction: column;
    gap: var(--space-2);
    z-index: 999;
    overflow-y: auto;
    border-top: 1px solid var(--border);
}

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

.mobile-nav a {
    font-size: 1.0625rem;
    font-weight: 500;
    color: var(--text-primary);
    padding: var(--space-4);
    border-radius: var(--radius-md);
    text-decoration: none;
    border-bottom: 1px solid var(--border);
    transition: all var(--transition-fast);
}

.mobile-nav a:hover {
    color: var(--secondary);
    background: rgba(37, 99, 235, 0.05);
}

@media (max-width: 1024px) {
    .nav {
        display: none;
    }
    
    .menu-toggle {
        display: flex;
    }
}

/* ========================================
   按钮
======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9375rem;
    transition: all var(--transition-base);
    white-space: nowrap;
}

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

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

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

.btn-accent:hover {
    background: #ea580c;
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

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

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

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: 1rem;
}

.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: 0.875rem;
}

/* ========================================
   Hero 区域
======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    position: relative;
    overflow: hidden;
    padding-top: 72px;
}

.hero-bg-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(255,255,255,0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255,255,255,0.06) 0%, transparent 40%);
    pointer-events: none;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero::after {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    top: -150px;
    right: -150px;
    pointer-events: none;
}

.hero-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 48px;
    width: 100%;
    position: relative;
    z-index: 1;
}

.hero-content {
    flex: 1;
    max-width: 720px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: 6px 16px;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--radius-full);
    color: var(--white);
    font-size: 0.875rem;
    margin-bottom: var(--space-6);
    animation: fadeInDown 0.6s ease both;
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

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

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--white);
    line-height: 1.2;
    margin-bottom: var(--space-5);
    animation: fadeInUp 0.6s ease 0.1s both;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: var(--space-8);
    max-width: 560px;
    line-height: 1.7;
    animation: fadeInUp 0.6s ease 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: var(--space-4);
    flex-wrap: wrap;
    animation: fadeInUp 0.6s ease 0.3s both;
}

.hero-buttons .btn {
    padding: 14px 28px;
    font-size: 1rem;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.hero-buttons .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.3);
}

.hero-stats {
    display: flex;
    gap: var(--space-12);
    margin-top: var(--space-12);
    padding-top: var(--space-8);
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    animation: fadeInUp 0.6s ease 0.4s both;
}

.hero-stat {
    text-align: left;
}

.hero-stat-value {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--white);
    line-height: 1;
    margin-bottom: 6px;
    background: linear-gradient(135deg, #ffffff 0%, rgba(255,255,255,0.8) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-stat-label {
    color: rgba(255, 255, 255, 0.65);
    font-size: 0.9rem;
}

/* 英雄区右侧：App展示 + 小程序二维码 */
.hero-app-showcase {
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    animation: fadeInRight 0.8s ease 0.3s both;
    position: relative;
}

.hero-phone-wrap {
    position: relative;
    width: 280px;
    filter: drop-shadow(0 32px 64px rgba(0,0,0,0.35));
}

.hero-phone-img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 32px;
    position: relative;
    z-index: 1;
}

.hero-phone-glow {
    position: absolute;
    bottom: -20px;
    left: 10%;
    right: 10%;
    height: 60px;
    background: radial-gradient(ellipse, rgba(37, 99, 235, 0.4) 0%, transparent 70%);
    filter: blur(20px);
    pointer-events: none;
}

.hero-miniprogram-qr {
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 20px;
    padding: 16px 24px;
    width: 100%;
    max-width: 280px;
}

.hero-qr-inner {
    display: flex;
    align-items: center;
    gap: 16px;
}

.hero-qr-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: rgba(255,255,255,0.9);
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
}

.hero-qr-img {
    width: 72px;
    height: 72px;
    border-radius: 10px;
    background: white;
    padding: 4px;
    object-fit: contain;
    flex-shrink: 0;
}

.hero-qr-tip {
    color: rgba(255,255,255,0.75);
    font-size: 11px;
    line-height: 1.4;
    margin: 0;
}

/* 响应式 */
@media (max-width: 1200px) {
    .hero-phone-wrap {
        width: 240px;
    }
}

@media (max-width: 1024px) {
    .hero-container {
        flex-direction: column;
        text-align: center;
        gap: 40px;
    }
    .hero-content { max-width: 100%; }
    .hero-subtitle { max-width: 100%; }
    .hero-buttons { justify-content: center; }
    .hero-stats { justify-content: center; }
    .hero-stat { text-align: center; }
    .hero-app-showcase {
        flex-direction: row;
        justify-content: center;
        align-items: center;
        gap: 32px;
        width: 100%;
    }
    .hero-phone-wrap {
        width: 180px;
    }
    .hero-miniprogram-qr {
        max-width: 240px;
    }
}

@media (max-width: 768px) {
    .hero {
        min-height: auto;
        padding: 100px 0 60px;
    }
    .hero h1 { font-size: 2.2rem; }
    .hero-subtitle { font-size: 1rem; }
    .hero-buttons { flex-direction: column; align-items: center; }
    .hero-buttons .btn { width: 100%; max-width: 280px; justify-content: center; }
    .hero-stats { gap: 24px; flex-wrap: wrap; justify-content: center; }
    .hero-stat-value { font-size: 1.75rem; }
    .hero-app-showcase {
        flex-direction: column;
        gap: 16px;
    }
    .hero-phone-wrap {
        width: 200px;
    }
    .hero-miniprogram-qr {
        max-width: 100%;
    }
    .hero-qr-inner {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }
}

@media (max-width: 480px) {
    .hero h1 { font-size: 1.85rem; }
    .hero-phone-wrap {
        width: 160px;
    }
}
.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(30, 58, 95, 0.1));
    color: var(--secondary);
    font-size: 14px;
    font-weight: 600;
    border-radius: 50px;
    margin-bottom: 12px;
}

/* 服务卡片链接样式 */
.service-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 16px;
    color: var(--secondary);
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.service-link:hover {
    color: var(--primary);
    gap: 10px;
}

.service-link svg {
    transition: transform 0.2s ease;
}

.service-link:hover svg {
    transform: translateX(4px);
}

/* 响应式 */
@media (max-width: 1200px) {
    .hero-qrcodes {
        width: 300px;
    }
}

@media (max-width: 1024px) {
    .hero-container {
        flex-direction: column;
        text-align: center;
        gap: 40px;
    }
    .hero-content { max-width: 100%; }
    .hero-subtitle { max-width: 100%; }
    .hero-buttons { justify-content: center; }
    .hero-stats { justify-content: center; }
    .hero-stat { text-align: center; }
    .hero-qrcodes {
        width: 100%;
        max-width: 500px;
    }
    .qrcode-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 768px) {
    .hero {
        min-height: auto;
        padding: 100px 0 60px;
    }
    .hero h1 { font-size: 2.2rem; }
    .hero-subtitle { font-size: 1rem; }
    .hero-buttons { flex-direction: column; align-items: center; }
    .hero-buttons .btn { width: 100%; max-width: 280px; justify-content: center; }
    .hero-stats { gap: 24px; flex-wrap: wrap; justify-content: center; }
    .hero-stat-value { font-size: 1.75rem; }
    .hero-qrcodes {
        padding: 20px;
        width: 100%;
    }
    .qrcode-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    .qrcode-card-inner {
        padding: 12px;
    }
    .qrcode-icon {
        width: 36px;
        height: 36px;
    }
    .qrcode-header-icon {
        width: 44px;
        height: 44px;
    }
}

@media (max-width: 480px) {
    .hero h1 { font-size: 1.85rem; }
    .hero-qrcodes { 
        padding: 16px;
        width: 100%;
        border-radius: 16px;
    }
    .qrcode-header {
        flex-direction: column;
        text-align: center;
    }
    .qrcode-img-wrap img {
        width: 80px;
        height: 80px;
    }
}

/* ========================================
   服务卡片
======================================== */
.services {
    background: var(--bg-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-6);
}

.service-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    text-align: center;
    transition: all var(--transition-base);
    border: 1px solid var(--border);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--secondary);
}

.service-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto var(--space-5);
    background: linear-gradient(135deg, var(--secondary), var(--primary));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.service-icon svg {
    width: 36px;
    height: 36px;
}

.service-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: var(--space-3);
}

.service-card p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
}

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

@media (max-width: 640px) {
    .services-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   信任背书
======================================== */
.trust {
    background: var(--white);
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-6);
}

.trust-item {
    text-align: center;
    padding: var(--space-6);
}

.trust-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-4);
    background: var(--bg-light);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--secondary);
}

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

.trust-item h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: var(--space-2);
}

.trust-item p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

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

@media (max-width: 640px) {
    .trust-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   服务流程
======================================== */
.process {
    background: linear-gradient(180deg, var(--bg-light) 0%, var(--white) 100%);
}

.process-steps {
    display: flex;
    justify-content: space-between;
    position: relative;
}

.process-steps::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 80px;
    right: 80px;
    height: 2px;
    background: var(--border);
}

.process-step {
    text-align: center;
    flex: 1;
    position: relative;
    z-index: 1;
}

.step-number {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-4);
    background: var(--white);
    border: 3px solid var(--secondary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary);
}

.process-step:hover .step-number {
    background: var(--secondary);
    color: var(--white);
}

.process-step h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: var(--space-2);
}

.process-step p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

@media (max-width: 1024px) {
    .process-steps {
        flex-wrap: wrap;
        gap: var(--space-6);
    }
    
    .process-steps::before {
        display: none;
    }
    
    .process-step {
        flex: 0 0 calc(33.333% - var(--space-6));
    }
}

@media (max-width: 768px) {
    .process-step {
        flex: 0 0 calc(50% - var(--space-4));
    }
    
    .step-number {
        width: 64px;
        height: 64px;
        font-size: 1.25rem;
    }
}

@media (max-width: 480px) {
    .process-step {
        flex: 0 0 100%;
    }
}

/* ========================================
   数据统计
======================================== */
.stats {
    background: var(--primary);
    color: var(--white);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
}

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

.stat-value {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--accent);
    margin-bottom: var(--space-2);
}

.stat-label {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.8);
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }
    
    .stat-value {
        font-size: 2.5rem;
    }
}

/* ========================================
   最新动态/案例
======================================== */
.cases {
    background: var(--white);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

.case-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all var(--transition-base);
}

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

.case-image {
    height: 200px;
    background: linear-gradient(135deg, var(--secondary), var(--primary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.case-image svg {
    width: 48px;
    height: 48px;
    opacity: 0.5;
}

.case-content {
    padding: var(--space-6);
}

.case-tag {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    background: var(--bg-light);
    color: var(--secondary);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-3);
}

.case-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: var(--space-3);
    line-height: 1.4;
}

.case-card p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
}

.case-route {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-top: var(--space-4);
    padding-top: var(--space-4);
    border-top: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.case-route svg {
    width: 16px;
    height: 16px;
}

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

@media (max-width: 640px) {
    .cases-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   联系方式
======================================== */
.contact {
    background: var(--bg-light);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
    align-items: start;
}

.contact-form {
    background: var(--white);
    padding: var(--space-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.form-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--space-6);
}

.form-group {
    margin-bottom: var(--space-5);
}

.form-group label {
    display: block;
    margin-bottom: var(--space-2);
    font-weight: 500;
    color: var(--text-primary);
}

.form-group label span {
    color: var(--error);
}

.form-control {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

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

.form-control.error {
    border-color: var(--error);
}

.form-error {
    color: var(--error);
    font-size: 0.875rem;
    margin-top: var(--space-1);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}

.contact-info {
    padding: var(--space-6);
}

.contact-info h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--space-6);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: var(--white);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--secondary);
    flex-shrink: 0;
}

.contact-icon svg {
    width: 24px;
    height: 24px;
}

.contact-item h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: var(--space-1);
}

.contact-item p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.qrcode-section {
    margin-top: var(--space-8);
    padding: var(--space-6);
    background: var(--white);
    border-radius: var(--radius-lg);
    text-align: center;
}

.qrcode-section h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: var(--space-4);
}

.qrcode-placeholder {
    width: 160px;
    height: 160px;
    margin: 0 auto;
    background: var(--bg-light);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

@media (max-width: 1024px) {
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   页脚
======================================== */
.footer {
    background: var(--bg-dark);
    color: var(--white);
    padding: var(--space-16) 0 var(--space-8);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-12);
    margin-bottom: var(--space-12);
}

.footer-brand .logo {
    color: var(--white);
    margin-bottom: var(--space-4);
}

.footer-brand p {
    color: var(--text-light);
    font-size: 0.9375rem;
    line-height: 1.8;
}

.footer h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-5);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-links a {
    color: var(--text-light);
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    padding-top: var(--space-8);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-light);
    font-size: 0.875rem;
}

.footer-social {
    display: flex;
    gap: var(--space-4);
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    background: var(--secondary);
}

/* 页脚二维码区域 */
.footer-qrcodes {
    padding: var(--space-10) 0 var(--space-6);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    margin-top: var(--space-4);
}

.footer-qr-title {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-light);
    margin-bottom: var(--space-6);
    text-align: center;
    letter-spacing: 0.03em;
}

.footer-qr-list {
    display: flex;
    justify-content: center;
    gap: var(--space-10);
    flex-wrap: wrap;
}

.footer-qr-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    transition: transform var(--transition-base);
    cursor: pointer;
}

.footer-qr-item:hover {
    transform: translateY(-4px);
}

.footer-qr-img-wrap {
    width: 110px;
    height: 110px;
    background: white;
    border-radius: var(--radius-lg);
    padding: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.25);
    overflow: hidden;
    transition: box-shadow var(--transition-base);
}

.footer-qr-item:hover .footer-qr-img-wrap {
    box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}

.footer-qr-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
    border-radius: 6px;
}

.footer-qr-meta {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--text-light);
    font-size: 0.875rem;
    font-weight: 500;
}

.footer-qr-icon {
    width: 26px;
    height: 26px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.footer-qr-icon--wechat { background: #07C160; color: white; }
.footer-qr-icon--douyin { background: #1a1a1a; color: white; }
.footer-qr-icon--xhs { background: #FF2442; color: white; }

@media (max-width: 640px) {
    .footer-qr-list { gap: var(--space-6); }
    .footer-qr-img-wrap { width: 90px; height: 90px; }
}

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

@media (max-width: 640px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--space-4);
        text-align: center;
    }
}

/* ========================================
   FAQ 页面
======================================== */
.faq-page {
    padding-top: 100px;
}

.faq-filters {
    display: flex;
    gap: var(--space-3);
    margin-bottom: var(--space-8);
    flex-wrap: wrap;
    justify-content: center;
}

.faq-filter {
    padding: var(--space-2) var(--space-5);
    border-radius: var(--radius-full);
    font-size: 0.9375rem;
    font-weight: 500;
    background: var(--bg-light);
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.faq-filter:hover,
.faq-filter.active {
    background: var(--secondary);
    color: var(--white);
}

.faq-search {
    max-width: 600px;
    margin: 0 auto var(--space-10);
    position: relative;
}

.faq-search input {
    width: 100%;
    padding: var(--space-4) var(--space-5);
    padding-left: 50px;
    border: 2px solid var(--border);
    border-radius: var(--radius-full);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.faq-search input:focus {
    outline: none;
    border-color: var(--secondary);
}

.faq-search svg {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--text-secondary);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-4);
    border: 1px solid var(--border);
    overflow: hidden;
    transition: all var(--transition-base);
}

.faq-item:hover {
    border-color: var(--secondary);
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-5) var(--space-6);
    cursor: pointer;
    font-weight: 600;
    color: var(--primary);
}

.faq-question svg {
    width: 20px;
    height: 20px;
    color: var(--text-secondary);
    transition: transform var(--transition-base);
    flex-shrink: 0;
}

.faq-item.active .faq-question svg {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer-content {
    padding: 0 var(--space-6) var(--space-6);
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ========================================
   服务详情页
======================================== */
.service-page {
    padding-top: 100px;
}

.service-hero {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    padding: var(--space-16) 0;
    text-align: center;
}

.service-hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--space-4);
}

.service-hero p {
    font-size: 1.125rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

.service-content {
    padding: var(--space-16) 0;
}

.service-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-12);
}

.service-main h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--space-6);
}

.service-main p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-6);
}

.price-table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--space-8) 0;
}

.price-table th,
.price-table td {
    padding: var(--space-4);
    border: 1px solid var(--border);
    text-align: left;
}

.price-table th {
    background: var(--bg-light);
    font-weight: 600;
    color: var(--primary);
}

.price-table tr:hover td {
    background: var(--bg-light);
}

.service-sidebar {
    position: sticky;
    top: 100px;
}

.sidebar-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    border: 1px solid var(--border);
    margin-bottom: var(--space-6);
}

.sidebar-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-4);
    border-bottom: 2px solid var(--secondary);
}

.sidebar-card ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.sidebar-card li {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--text-secondary);
}

.sidebar-card li svg {
    width: 18px;
    height: 18px;
    color: var(--success);
}

@media (max-width: 1024px) {
    .service-grid {
        grid-template-columns: 1fr;
    }
    
    .service-sidebar {
        position: static;
    }
}

/* ========================================
   城市页面
======================================== */
.cities-page {
    padding-top: 100px;
}

.cities-hero {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    padding: var(--space-16) 0;
    text-align: center;
}

.cities-hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--space-4);
}

.city-selector {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    gap: var(--space-4);
    align-items: center;
}

.city-selector select {
    flex: 1;
    padding: var(--space-4);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    background: var(--white);
    color: var(--text-primary);
}

.cities-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--space-4);
}

.city-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    text-align: center;
    border: 1px solid var(--border);
    transition: all var(--transition-base);
}

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

.city-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: var(--space-2);
}

.city-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.city-hot {
    display: inline-block;
    padding: 2px 8px;
    background: var(--accent);
    color: var(--white);
    font-size: 0.75rem;
    border-radius: var(--radius-sm);
    margin-left: var(--space-2);
}

@media (max-width: 1024px) {
    .cities-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 768px) {
    .cities-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 480px) {
    .cities-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ========================================
   关于我们页面
======================================== */
.about-page {
    padding-top: 100px;
}

.about-hero {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    padding: var(--space-16) 0;
    text-align: center;
}

.about-hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--space-4);
}

.about-content {
    padding: var(--space-16) 0;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
    align-items: center;
}

.about-text h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--space-6);
}

.about-text p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-4);
}

.about-image {
    border-radius: var(--radius-xl);
    overflow: hidden;
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, var(--secondary), var(--primary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.team-section {
    background: var(--bg-light);
    padding: var(--space-16) 0;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

.team-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    text-align: center;
    transition: all var(--transition-base);
}

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

.team-avatar {
    width: 100px;
    height: 100px;
    margin: 0 auto var(--space-5);
    background: linear-gradient(135deg, var(--secondary), var(--primary));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 2rem;
    font-weight: 700;
}

.team-card h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: var(--space-2);
}

.team-card .position {
    color: var(--secondary);
    font-size: 0.9375rem;
    margin-bottom: var(--space-4);
}

.team-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.6;
}

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

@media (max-width: 640px) {
    .team-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   页面头部
======================================== */
.page-header {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    padding: var(--space-16) 0;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--space-4);
}

.page-header p {
    font-size: 1.125rem;
    opacity: 0.9;
}

/* ========================================
   面包屑导航
======================================== */
.breadcrumb {
    padding: var(--space-4) 0;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.breadcrumb a {
    color: var(--text-secondary);
}

.breadcrumb a:hover {
    color: var(--secondary);
}

.breadcrumb span {
    margin: 0 var(--space-2);
}

/* ========================================
   辅助类
======================================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-4 { margin-top: var(--space-4); }
.mt-8 { margin-top: var(--space-8); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-8 { margin-bottom: var(--space-8); }

.hidden { display: none !important; }

/* ========================================
   动画
======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fadeInUp {
    animation: fadeInUp 0.6s ease-out forwards;
}

.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }
.animate-delay-4 { animation-delay: 0.4s; }

/* 滚动动画 - 所有reveal元素默认直接显示，不依赖JS */
.reveal {
    opacity: 1 !important;
    transform: translateY(0) !important;
}

/* ========================================
   Toast 提示
======================================== */
.toast {
    position: fixed;
    top: 100px;
    left: 50%;
    transform: translateX(-50%) translateY(-20px);
    padding: var(--space-4) var(--space-6);
    border-radius: var(--radius-md);
    color: var(--white);
    font-weight: 500;
    z-index: 9999;
    opacity: 0;
    transition: all var(--transition-base);
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.toast.success {
    background: var(--success);
}

.toast.error {
    background: var(--error);
}

.toast.info {
    background: var(--secondary);
}

/* ========================================
   加载状态
======================================== */
.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--border);
    border-top-color: var(--secondary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ========================================
   响应式辅助
======================================== */
@media (max-width: 768px) {
    .hide-mobile { display: none !important; }
}

@media (min-width: 769px) {
    .hide-desktop { display: none !important; }
}