/* ========================================
   Seedance 2.0 代购服务 - 样式表
   ======================================== */

/* CSS 变量定义 */
:root {
    /* 颜色系统 */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a25;
    --accent-primary: #00d4aa;
    --accent-secondary: #7c3aed;
    --accent-gradient: linear-gradient(135deg, #00d4aa 0%, #7c3aed 100%);
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #6b6b7b;
    --border-color: #2a2a3a;
    --border-light: #3a3a4a;

    /* 字体系统 */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'DM Sans', sans-serif;

    /* 间距系统 */
    --space-xs: 8px;
    --space-sm: 16px;
    --space-md: 24px;
    --space-lg: 40px;
    --space-xl: 60px;
    --space-2xl: 100px;

    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;

    /* 阴影 */
    --shadow-sm: 0 4px 20px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 10px 40px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 20px 60px rgba(0, 212, 170, 0.1);
    --shadow-glow: 0 0 30px rgba(0, 212, 170, 0.4);

    /* 过渡 */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 语言选择器样式 */
.language-selector {
    margin-right: 16px;
}

.language-selector select {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    padding: 8px 32px 8px 12px;
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%23a0a0b0'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 8px center;
    background-size: 16px;
}

.language-selector select:hover {
    background-color: rgba(255, 255, 255, 0.15);
    border-color: var(--accent-primary);
}

.language-selector select:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 170, 0.2);
}

.language-selector select option {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

/* 重置样式 */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
}

a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: var(--transition);
}

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

ul {
    list-style: none;
}

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

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* ========================================
   按钮样式
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-family: var(--font-body);
    font-size: 16px;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: var(--accent-gradient);
    color: var(--text-primary);
    box-shadow: 0 4px 20px rgba(0, 212, 170, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
    color: var(--text-primary);
}

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

.btn-outline:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.btn-sm {
    padding: 10px 20px;
    font-size: 14px;
}

.btn-cta-primary {
    font-size: 20px;
    padding: 20px 50px;
    animation: pulse-glow 2s infinite;
}

@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 4px 20px rgba(0, 212, 170, 0.3); }
    50% { box-shadow: 0 4px 40px rgba(0, 212, 170, 0.6); }
}

/* ========================================
   信任徽章
   ======================================== */

.trust-badges {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.trust-badge {
    padding: 8px 16px;
    background: rgba(0, 212, 170, 0.15);
    border: 1px solid rgba(0, 212, 170, 0.4);
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    color: var(--accent-primary);
}

/* ========================================
   CTA 包装器
   ======================================== */

.cta-wrapper {
    text-align: center;
    margin-bottom: 24px;
}

.cta-subtext {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 12px;
}

/* ========================================
   紧迫感横幅
   ======================================== */

.urgency-bar {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    background: linear-gradient(135deg, rgba(255, 107, 107, 0.2) 0%, rgba(255, 159, 67, 0.2) 100%);
    border: 1px solid rgba(255, 107, 107, 0.4);
    border-radius: 30px;
    font-size: 14px;
    margin-bottom: 32px;
}

.urgency-icon {
    font-size: 20px;
}

.urgency-bar strong {
    color: #ff6b6b;
}

/* ========================================
   支付安全
   ======================================== */

.payment-security {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    margin-top: 32px;
}

.security-label {
    font-size: 14px;
    color: var(--text-secondary);
}

.payment-icons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
}

.payment-icon {
    padding: 6px 12px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    font-size: 12px;
    color: var(--text-secondary);
}

/* ========================================
   价值主张
   ======================================== */

.value-props {
    padding: 60px 0;
    background: var(--bg-secondary);
}

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

.value-item {
    text-align: center;
    padding: 24px;
    background: var(--bg-primary);
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.value-icon {
    font-size: 36px;
    margin-bottom: 12px;
    display: block;
}

.value-item h3 {
    font-size: 16px;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.value-item p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ========================================
   产品网格
   ======================================== */

.products {
    padding: 100px 0;
}

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

.product-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 32px 24px;
    position: relative;
    transition: all 0.3s ease;
}

.product-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent-primary);
    box-shadow: 0 20px 60px rgba(0, 212, 170, 0.15);
}

.product-card .card-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #ff6b6b 0%, #ff9f43 100%);
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
}

.product-card .card-icon {
    font-size: 40px;
    margin-bottom: 16px;
    color: var(--accent-primary);
}

.product-card .card-title {
    font-size: 20px;
    margin-bottom: 8px;
}

.product-card .card-desc {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.product-card .card-features {
    margin-bottom: 20px;
}

.product-card .card-features li {
    padding: 8px 0;
    font-size: 14px;
    color: var(--text-secondary);
}

.product-card .card-price {
    margin-bottom: 20px;
}

.price-old {
    font-size: 18px;
    color: var(--text-muted);
    text-decoration: line-through;
    margin-right: 8px;
}

.price-label {
    display: inline-block;
    background: rgba(255, 107, 107, 0.2);
    color: #ff6b6b;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 700;
    margin-left: 8px;
}

.product-card .card-footer {
    text-align: center;
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 12px;
}

/* ========================================
   信任区域
   ======================================== */

.trust-section {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
    margin-top: 60px;
    padding: 24px;
    background: var(--bg-secondary);
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-secondary);
}

.trust-icon {
    font-size: 20px;
}

/* ========================================
   评价验证徽章
   ======================================== */

.testimonial-verified {
    display: inline-block;
    font-size: 12px;
    color: var(--accent-primary);
    margin-top: 12px;
}

/* ========================================
   联系方式
   ======================================== */

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-method-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px;
    background: var(--bg-secondary);
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.contact-method-item .contact-icon {
    font-size: 32px;
    flex-shrink: 0;
}

.contact-method-item h4 {
    font-size: 16px;
    margin-bottom: 4px;
}

.contact-method-item p {
    font-size: 14px;
    color: var(--accent-primary);
    font-weight: 600;
}

.contact-method-item span {
    font-size: 12px;
    color: var(--text-muted);
}

.contact-method-item .contact-badge {
    display: inline-block;
    background: rgba(0, 212, 170, 0.2);
    color: var(--accent-primary);
    padding: 4px 10px;
    border-radius: 10px;
    font-size: 11px;
    margin-top: 8px;
}

/* ========================================
   保障横幅
   ======================================== */

.guarantee-banner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-top: 60px;
    padding: 24px 40px;
    background: linear-gradient(135deg, rgba(0, 212, 170, 0.1) 0%, rgba(124, 58, 237, 0.1) 100%);
    border: 2px solid var(--accent-primary);
    border-radius: 16px;
}

.guarantee-icon {
    font-size: 40px;
}

.guarantee-text strong {
    display: block;
    font-size: 18px;
    margin-bottom: 4px;
}

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

/* ========================================
   导航栏
   ======================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-sm) 0;
    transition: var(--transition);
}

.header.scrolled {
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

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

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
}

.logo:hover {
    color: var(--text-primary);
}

.logo-icon {
    font-size: 28px;
    color: var(--accent-primary);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

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

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    position: relative;
}

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

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

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

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

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

.mobile-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

/* ========================================
   Hero 区域
   ======================================== */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 120px 0 var(--space-2xl);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.grid-overlay {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(42, 42, 58, 0.3) 1px, transparent 1px),
        linear-gradient(90deg, rgba(42, 42, 58, 0.3) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.5;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: var(--accent-primary);
    top: -200px;
    right: -200px;
    animation: float 8s ease-in-out infinite;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: var(--accent-secondary);
    bottom: -150px;
    left: -150px;
    animation: float 10s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(30px, -30px); }
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(0, 212, 170, 0.1);
    border: 1px solid rgba(0, 212, 170, 0.3);
    border-radius: var(--radius-xl);
    color: var(--accent-primary);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: var(--space-md);
    animation: fadeInUp 0.6s ease-out;
}

.hero-title {
    font-size: 64px;
    font-weight: 800;
    margin-bottom: var(--space-md);
    animation: fadeInUp 0.6s ease-out 0.1s both;
}

.gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero-actions {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    margin-bottom: var(--space-xl);
    animation: fadeInUp 0.6s ease-out 0.3s both;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
    animation: fadeInUp 0.6s ease-out 0.4s both;
}

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

.stat-number {
    display: block;
    font-family: var(--font-heading);
    font-size: 48px;
    font-weight: 800;
    color: var(--accent-primary);
}

.stat-label {
    display: block;
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 4px;
}

.stat-unit {
    color: var(--accent-primary);
    font-weight: 700;
}

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

/* ========================================
   通用区块样式
   ======================================== */

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

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(124, 58, 237, 0.1);
    border: 1px solid rgba(124, 58, 237, 0.3);
    border-radius: var(--radius-xl);
    color: var(--accent-secondary);
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--space-sm);
}

.section-title {
    font-size: 48px;
    margin-bottom: var(--space-sm);
}

.section-desc {
    font-size: 18px;
    color: var(--text-secondary);
}

/* ========================================
   服务产品区域
   ======================================== */

.services {
    padding: var(--space-2xl) 0;
    background: var(--bg-secondary);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
}

.service-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    position: relative;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-lg);
}

.service-card.featured {
    border-color: var(--accent-secondary);
    background: linear-gradient(135deg, var(--bg-primary) 0%, rgba(124, 58, 237, 0.1) 100%);
}

.featured-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 16px;
    background: var(--accent-gradient);
    border-radius: var(--radius-xl);
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
}

.card-icon {
    font-size: 40px;
    margin-bottom: var(--space-sm);
    color: var(--accent-primary);
}

.card-title {
    font-size: 22px;
    margin-bottom: var(--space-xs);
}

.card-desc {
    color: var(--text-secondary);
    font-size: 15px;
    margin-bottom: var(--space-md);
}

.card-features {
    margin-bottom: var(--space-md);
}

.card-features li {
    padding: 8px 0;
    color: var(--text-secondary);
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.card-features li::before {
    content: '✓';
    color: var(--accent-primary);
    font-weight: 700;
}

.card-price {
    display: flex;
    align-items: baseline;
    gap: 8px;
    margin-bottom: var(--space-md);
}

.price-label {
    font-size: 14px;
    color: var(--text-secondary);
}

.price-value {
    font-family: var(--font-heading);
    font-size: 32px;
    font-weight: 700;
    color: var(--accent-primary);
}

.service-card .btn {
    width: 100%;
}

/* ========================================
   优势特点区域
   ======================================== */

.features {
    padding: var(--space-2xl) 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
}

.feature-item {
    text-align: center;
    padding: var(--space-lg);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.feature-item:hover {
    border-color: var(--accent-primary);
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: var(--space-sm);
}

.feature-title {
    font-size: 22px;
    margin-bottom: var(--space-xs);
}

.feature-desc {
    color: var(--text-secondary);
    font-size: 15px;
}

/* ========================================
   购买流程区域
   ======================================== */

.process {
    padding: var(--space-2xl) 0;
    background: var(--bg-secondary);
}

.process-steps {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.process-step {
    flex: 1;
    min-width: 200px;
    text-align: center;
    position: relative;
}

.step-number {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    font-family: var(--font-heading);
    font-size: 72px;
    font-weight: 800;
    color: rgba(0, 212, 170, 0.1);
    z-index: 0;
}

.step-icon {
    font-size: 48px;
    margin-bottom: var(--space-sm);
    position: relative;
    z-index: 1;
}

.step-title {
    font-size: 20px;
    margin-bottom: var(--space-xs);
    position: relative;
    z-index: 1;
}

.step-desc {
    color: var(--text-secondary);
    font-size: 14px;
    position: relative;
    z-index: 1;
}

.process-connector {
    flex: 0 0 50px;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    margin-top: 60px;
}

/* ========================================
   客户评价区域
   ======================================== */

.testimonials {
    padding: var(--space-2xl) 0;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-lg);
}

.testimonial-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    transition: var(--transition);
}

.testimonial-card:hover {
    border-color: var(--accent-primary);
}

.testimonial-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.testimonial-avatar {
    width: 50px;
    height: 50px;
    background: var(--accent-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 20px;
}

.testimonial-name {
    font-size: 16px;
    margin-bottom: 2px;
}

.testimonial-rating {
    color: #fbbf24;
    font-size: 14px;
}

.testimonial-text {
    color: var(--text-secondary);
    font-style: italic;
    line-height: 1.7;
}

/* ========================================
   FAQ 区域
   ======================================== */

.faq {
    padding: var(--space-2xl) 0;
    background: var(--bg-secondary);
}

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

.faq-item {
    border-bottom: 1px solid var(--border-color);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) 0;
    background: none;
    border: none;
    color: var(--text-primary);
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    text-align: left;
    transition: var(--transition);
}

.faq-question:hover {
    color: var(--accent-primary);
}

.faq-icon {
    font-size: 24px;
    color: var(--accent-primary);
    transition: var(--transition);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.faq-item.active .faq-answer {
    max-height: 300px;
}

.faq-answer p {
    padding-bottom: var(--space-md);
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ========================================
   联系我们区域
   ======================================== */

.contact {
    padding: var(--space-2xl) 0;
}

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

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.contact-item {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

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

.contact-icon {
    font-size: 32px;
    flex-shrink: 0;
}

.contact-details h3 {
    font-size: 18px;
    margin-bottom: 4px;
}

.contact-details p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
}

.contact-form-wrapper {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    border: 1px solid var(--border-color);
}

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

.contact-form label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    font-size: 14px;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 14px 16px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 16px;
    transition: var(--transition);
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 170, 0.1);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: var(--text-muted);
}

.contact-form select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23a0a0b0' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 20px;
}

.contact-form select option {
    background: var(--bg-primary);
    color: var(--text-primary);
}

/* ========================================
   页脚
   ======================================== */

.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: var(--space-xl) 0 var(--space-md);
}

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

.footer-brand .logo {
    margin-bottom: var(--space-sm);
}

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

.footer-links {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: var(--space-xl);
}

.footer-column h4 {
    font-size: 16px;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.footer-column ul {
    gap: 8px;
}

.footer-column ul:not(.qr-codes-list) {
    display: flex;
    flex-direction: column;
}

.footer-column a {
    color: var(--text-secondary);
    font-size: 14px;
    transition: var(--transition);
}

.footer-column a:hover {
    color: var(--accent-primary);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-md);
    border-top: 1px solid var(--border-color);
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 14px;
}

/* ========================================
   QR Code Footer Styles
   ======================================== */

/* QR codes list - horizontal left-right layout */
.qr-codes-list {
    display: flex !important;
    flex-direction: row !important;
    justify-content: center;
    gap: 40px;
    margin-top: 8px;
}

/* Individual QR code item - vertical stack (icon + text) */
.qr-code-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: var(--space-xs) 0;
    color: var(--text-secondary);
    transition: var(--transition);
}

.qr-icon {
    width: 64px;
    height: 64px;
    border-radius: 0;
    flex-shrink: 0;
    transition: var(--transition);
}

.qr-code-item:hover {
    color: var(--accent-primary);
}

/* ========================================
   页面头部（政策页面）
   ======================================== */

.page-header {
    padding: 160px 0 var(--space-xl);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.page-title {
    font-size: 56px;
    margin-bottom: var(--space-xs);
    animation: fadeInUp 0.6s ease-out;
}

.page-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    animation: fadeInUp 0.6s ease-out 0.1s both;
}

/* ========================================
   政策内容页面
   ======================================== */

.policy-content {
    padding: var(--space-xl) 0 var(--space-2xl);
}

.policy-card {
    max-width: 800px;
    margin: 0 auto;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    border: 1px solid var(--border-color);
}

.policy-section {
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--border-color);
}

.policy-section.last {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.policy-section h2 {
    font-size: 24px;
    margin-bottom: var(--space-sm);
    color: var(--accent-primary);
}

.policy-section p {
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
    line-height: 1.8;
}

.policy-section ul,
.policy-section ol {
    margin: var(--space-sm) 0;
    padding-left: var(--space-md);
}

.policy-section li {
    color: var(--text-secondary);
    margin-bottom: 8px;
    line-height: 1.7;
}

.policy-section ul li {
    list-style: disc;
}

.policy-section ol li {
    list-style: decimal;
}

.policy-section a {
    color: var(--accent-primary);
}

.policy-section a:hover {
    text-decoration: underline;
}

/* ========================================
   联系页面专用样式
   ======================================== */

.contact-page {
    padding: var(--space-xl) 0 var(--space-2xl);
}

.contact-intro {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--space-xl);
}

.contact-intro p {
    color: var(--text-secondary);
    font-size: 18px;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.contact-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    text-align: center;
    position: relative;
    transition: var(--transition);
}

.contact-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-5px);
}

.contact-card-icon {
    font-size: 48px;
    margin-bottom: var(--space-sm);
}

.contact-card h3 {
    font-size: 20px;
    margin-bottom: var(--space-xs);
}

.contact-method {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 4px;
}

.contact-value {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: var(--space-xs);
}

.contact-desc {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
}

.contact-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    padding: 4px 10px;
    background: rgba(124, 58, 237, 0.2);
    border-radius: var(--radius-sm);
    font-size: 11px;
    color: var(--accent-secondary);
    font-weight: 600;
}

.contact-badge.best {
    background: rgba(0, 212, 170, 0.2);
    color: var(--accent-primary);
}

/* 联系页面表单区域 */
.contact-form-section {
    max-width: 700px;
    margin: 0 auto var(--space-xl);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    border: 1px solid var(--border-color);
}

.contact-form-section h2 {
    font-size: 28px;
    text-align: center;
    margin-bottom: var(--space-xs);
}

.contact-form-section > p {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
}

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

/* 快速帮助链接 */
.quick-help {
    max-width: 800px;
    margin: 0 auto var(--space-xl);
    text-align: center;
}

.quick-help h3 {
    font-size: 24px;
    margin-bottom: var(--space-md);
}

.quick-links {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.quick-link-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    transition: var(--transition);
}

.quick-link-item:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.quick-icon {
    font-size: 20px;
}

/* 购买提示 */
.purchase-tips {
    max-width: 900px;
    margin: 0 auto;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    border: 1px solid var(--border-color);
}

.purchase-tips h3 {
    font-size: 24px;
    text-align: center;
    margin-bottom: var(--space-lg);
}

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

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

.tip-number {
    display: inline-block;
    width: 40px;
    height: 40px;
    line-height: 40px;
    background: var(--accent-gradient);
    border-radius: 50%;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 18px;
    margin-bottom: var(--space-xs);
}

.tip-content h4 {
    font-size: 16px;
    margin-bottom: 4px;
}

.tip-content p {
    color: var(--text-secondary);
    font-size: 14px;
}

/* ========================================
   响应式设计
   ======================================== */

@media (min-width: 1024px) {
    .process-steps {
        flex-direction: column;
        align-items: center;
    }

    .process-connector {
        width: 2px;
        height: 50px;
        margin: 0;
    }

    .process-step {
        margin-bottom: var(--space-md);
    }

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

    .footer-links {
        justify-content: center;
    }

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

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

@media (max-width: 768px) {
    :root {
        --space-2xl: 60px;
    }

    /* QR codes stack vertically on mobile */
    .qr-codes-list {
        flex-direction: column;
        gap: 16px;
    }

    .footer-column ul {
        display: flex;
        flex-direction: column;
    }

    .qr-code-item {
        width: 100%;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: var(--bg-secondary);
        flex-direction: column;
        justify-content: center;
        gap: var(--space-md);
        transition: var(--transition);
        border-left: 1px solid var(--border-color);
    }

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

    .mobile-toggle {
        display: flex;
        z-index: 1001;
    }

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

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

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

    .hero-title {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

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

    .hero-stats {
        flex-direction: column;
        gap: var(--space-md);
    }

    .stat-number {
        font-size: 36px;
    }

    .section-title {
        font-size: 32px;
    }

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

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

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

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

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

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

    .form-row {
        grid-template-columns: 1fr;
    }

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

    .page-title {
        font-size: 36px;
    }

    .policy-card {
        padding: var(--space-md);
    }

    .policy-section h2 {
        font-size: 20px;
    }

    .contact-form-section {
        padding: var(--space-md);
    }
    .trust-section {
        gap: 20px;
    }

    .guarantee-banner {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-sm);
    }

    .btn {
        padding: 12px 24px;
        font-size: 14px;
    }

    .btn-lg {
        padding: 14px 28px;
        font-size: 16px;
    }

    .logo {
        font-size: 20px;
    }

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