/**
 * 仓库狗国际物流 - PC端官网样式
 * 设计风格：专业、简洁、信任感
 * 主色调：#2563EB (蓝色) | #059669 (绿色) | #D97706 (橙色)
 */

/* ========== CSS Variables ========== */
:root {
    --color-primary: #2563EB;
    --color-primary-dark: #1D4ED8;
    --color-primary-light: #3B82F6;
    --color-secondary: #059669;
    --color-secondary-light: #10B981;
    --color-accent: #D97706;
    --color-accent-light: #F59E0B;
    --color-purple: #7C3AED;
    --color-purple-light: #A78BFA;
    
    --color-white: #FFFFFF;
    --color-black: #0F172A;
    --color-gray-50: #F8FAFC;
    --color-gray-100: #F1F5F9;
    --color-gray-200: #E2E8F0;
    --color-gray-300: #CBD5E1;
    --color-gray-400: #94A3B8;
    --color-gray-500: #64748B;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1E293B;
    --color-gray-900: #0F172A;
    
    --font-sans: 'Noto Sans SC', 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-en: 'Be Vietnam Pro', 'Noto Sans SC', sans-serif;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 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-sm: 4px;
    --radius: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --transition: all 0.2s ease;
    --transition-slow: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-gray-700);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul, ol {
    list-style: none;
}

/* ========== Container ========== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ========== Buttons ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 500;
    border-radius: var(--radius);
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn svg {
    width: 18px;
    height: 18px;
}

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

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

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

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

.btn-lg {
    padding: 16px 32px;
    font-size: 16px;
}

.btn-block {
    width: 100%;
}

/* ========== Section Header ========== */
.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-badge {
    display: inline-block;
    padding: 6px 16px;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
    color: var(--color-white);
    font-size: 13px;
    font-weight: 600;
    border-radius: 20px;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: 12px;
    line-height: 1.2;
}

.section-subtitle {
    font-size: 18px;
    color: var(--color-gray-500);
    max-width: 600px;
    margin: 0 auto;
}

/* ========== Header ========== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-gray-200);
    transition: var(--transition-slow);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 72px;
}

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

.header-logo {
    height: 40px;
    width: auto;
}

.header-name {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-gray-900);
}

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

.nav-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--color-gray-600);
    position: relative;
    padding: 8px 0;
}

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

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

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

.header-contact {
    display: flex;
    align-items: center;
    gap: 20px;
}

.contact-phone {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--color-gray-700);
    font-size: 14px;
    font-weight: 500;
}

.contact-icon {
    width: 18px;
    height: 18px;
    color: var(--color-primary);
}

.contact-btn {
    padding: 10px 20px;
    background: var(--color-primary);
    color: var(--color-white);
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--radius);
    transition: var(--transition);
}

.contact-btn:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
}

.header-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.header-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-gray-700);
    transition: var(--transition);
}

/* ========== Hero Section ========== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 72px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 50%, var(--color-gray-900) 100%);
    z-index: -2;
}

.hero-bg::before {
    content: '';
    position: absolute;
    inset: 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");
    opacity: 0.5;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.hero-content {
    color: var(--color-white);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 24px;
    backdrop-filter: blur(10px);
}

.hero-badge svg {
    width: 18px;
    height: 18px;
}

.hero-title {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
}

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

.hero-subtitle {
    font-size: 20px;
    line-height: 1.7;
    opacity: 0.9;
    margin-bottom: 32px;
}

.hero-actions {
    display: flex;
    gap: 16px;
}

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

.hero-actions .btn-primary:hover {
    background: var(--color-gray-100);
    transform: translateY(-2px);
}

.hero-actions .btn-outline {
    border-color: rgba(255, 255, 255, 0.5);
    color: var(--color-white);
}

.hero-actions .btn-outline:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--color-white);
}

.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 400px;
}

.hero-card {
    position: absolute;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: 16px;
    animation: float 3s ease-in-out infinite;
}

.hero-card--main {
    top: 20%;
    left: 10%;
    z-index: 2;
}

.hero-card--secondary {
    bottom: 20%;
    right: 10%;
    animation-delay: 1.5s;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.hero-card-icon {
    font-size: 40px;
}

.hero-card-content {
    display: flex;
    flex-direction: column;
}

.hero-card-label {
    font-size: 13px;
    color: var(--color-gray-500);
}

.hero-card-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-gray-900);
}

.hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: -1;
}

.hero-wave svg {
    width: 100%;
    height: 120px;
}

/* ========== Stats Section ========== */
.stats {
    padding: 60px 0;
    background: var(--color-white);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 24px;
    background: var(--color-gray-50);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

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

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-icon svg {
    width: 28px;
    height: 28px;
    color: var(--color-white);
}

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

.stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-gray-900);
    font-family: var(--font-en);
}

.stat-label {
    font-size: 14px;
    color: var(--color-gray-500);
}

/* ========== Services Section ========== */
.services {
    padding: 80px 0;
    background: var(--color-gray-50);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.service-card {
    position: relative;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow);
    transition: var(--transition-slow);
    overflow: hidden;
}

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

.service-card--featured {
    border: 2px solid var(--color-primary);
}

.service-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    padding: 4px 12px;
    background: var(--color-primary);
    color: var(--color-white);
    font-size: 12px;
    font-weight: 600;
    border-radius: 20px;
}

.service-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.service-icon svg {
    width: 32px;
    height: 32px;
    color: var(--color-white);
}

.service-title {
    font-size: 22px;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: 12px;
}

.service-desc {
    font-size: 15px;
    color: var(--color-gray-600);
    line-height: 1.7;
    margin-bottom: 20px;
}

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

.service-features li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--color-gray-700);
    margin-bottom: 8px;
}

.service-features svg {
    width: 16px;
    height: 16px;
    color: var(--color-secondary);
    flex-shrink: 0;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 15px;
    font-weight: 500;
    color: var(--color-primary);
}

.service-link svg {
    width: 16px;
    height: 16px;
    transition: var(--transition);
}

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

/* ========== Pricing Section ========== */
.pricing {
    padding: 80px 0;
    background: var(--color-white);
}

.pricing-tabs {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 40px;
}

.pricing-tab {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--color-gray-100);
    border-radius: var(--radius);
    font-size: 15px;
    font-weight: 500;
    color: var(--color-gray-600);
    transition: var(--transition);
    border: 2px solid transparent;
}

.pricing-tab:hover {
    background: var(--color-gray-200);
}

.pricing-tab.active {
    background: var(--color-white);
    color: var(--color-primary);
    border-color: var(--color-primary);
    box-shadow: var(--shadow);
}

.tab-flag {
    font-size: 20px;
}

/* 价格卡片网格布局 - 每行3个卡片 */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 1100px;
    margin: 0 auto;
}

.pricing-card {
    position: relative;
    background: var(--color-gray-50);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition-slow);
}

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

/* 价格卡片选中状态 - 点击后高亮显示 */
.pricing-card--selected {
    background: var(--color-white);
    border: 2px solid var(--color-primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.pricing-card--selected::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.pricing-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 24px;
    border-bottom: 1px solid var(--color-gray-200);
}

.pricing-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
}

.pricing-icon svg {
    width: 24px;
    height: 24px;
    color: var(--color-white);
}

.pricing-type-name {
    display: block;
    font-size: 18px;
    font-weight: 600;
    color: var(--color-gray-900);
}

.pricing-type-en {
    font-size: 12px;
    color: var(--color-gray-500);
    font-family: var(--font-en);
}

.pricing-body {
    padding: 24px;
}

.pricing-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px dashed var(--color-gray-200);
}

.pricing-row:last-of-type {
    border-bottom: none;
}

.pricing-label {
    font-size: 14px;
    color: var(--color-gray-500);
}

.pricing-value {
    font-size: 15px;
    font-weight: 500;
    color: var(--color-gray-700);
}

.pricing-price {
    color: var(--color-primary);
    font-weight: 600;
}

.pricing-note {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 16px;
    padding: 12px;
    background: var(--color-gray-100);
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--color-gray-600);
}

.pricing-note svg {
    width: 16px;
    height: 16px;
    color: var(--color-primary);
    flex-shrink: 0;
}

.pricing-footer {
    padding: 0 24px 24px;
}

.pricing-disclaimer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 32px;
    font-size: 14px;
    color: var(--color-gray-500);
}

.pricing-disclaimer svg {
    width: 16px;
    height: 16px;
    color: var(--color-gray-400);
}

/* ========== Trust Section ========== */
.trust {
    padding: 80px 0;
    background: var(--color-gray-50);
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.trust-item {
    text-align: center;
    padding: 32px 24px;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    transition: var(--transition-slow);
}

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

.trust-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.trust-icon svg {
    width: 32px;
    height: 32px;
    color: var(--color-white);
}

.trust-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: 8px;
}

.trust-desc {
    font-size: 14px;
    color: var(--color-gray-600);
    line-height: 1.6;
}

/* ========== Process Section ========== */
.process {
    padding: 80px 0;
    background: var(--color-white);
}

.process-timeline {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    position: relative;
}

.process-step {
    text-align: center;
    padding: 0 20px;
    position: relative;
}

.step-number {
    width: 56px;
    height: 56px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    color: var(--color-white);
    font-family: var(--font-en);
    position: relative;
    z-index: 2;
}

.step-connector {
    position: absolute;
    top: 28px;
    left: calc(50% + 28px);
    right: calc(-50% + 28px);
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
    z-index: 1;
}

.process-step:last-child .step-connector {
    display: none;
}

.step-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: 8px;
}

.step-desc {
    font-size: 14px;
    color: var(--color-gray-600);
    line-height: 1.6;
}

/* ========== Reviews Section ========== */
.reviews {
    padding: 80px 0;
    background: var(--color-gray-50);
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.review-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow);
    transition: var(--transition-slow);
}

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

.review-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.review-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--color-white);
    font-weight: 600;
}

.review-author {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-gray-900);
}

.review-location {
    font-size: 13px;
    color: var(--color-gray-500);
}

.review-stars {
    display: flex;
    gap: 4px;
    margin-bottom: 12px;
}

.review-stars svg {
    width: 18px;
    height: 18px;
    fill: var(--color-accent);
}

.review-content {
    font-size: 15px;
    color: var(--color-gray-700);
    line-height: 1.7;
}

/* ========== About Section ========== */
.about {
    padding: 80px 0;
    background: var(--color-white);
}

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

.about-text .section-badge {
    display: inline-block;
}

.about-text .section-title {
    text-align: left;
    margin-bottom: 20px;
}

.about-desc {
    font-size: 16px;
    color: var(--color-gray-600);
    line-height: 1.8;
    margin-bottom: 24px;
}

.about-features {
    display: flex;
    gap: 24px;
}

.about-feature {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
    font-weight: 500;
    color: var(--color-gray-700);
}

.about-feature svg {
    width: 20px;
    height: 20px;
    color: var(--color-secondary);
}

.about-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-image img {
    width: 100%;
    height: auto;
}

/* ========== Contact Section ========== */
.contact {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 60px;
    align-items: center;
}

.contact-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 12px;
}

.contact-subtitle {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 32px;
}

.contact-methods {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.contact-method:hover {
    background: rgba(255, 255, 255, 0.15);
}

.method-icon {
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.method-icon svg {
    width: 22px;
    height: 22px;
}

.method-label {
    display: block;
    font-size: 13px;
    opacity: 0.8;
}

.method-value {
    font-size: 15px;
    font-weight: 500;
}

.contact-qr {
    text-align: center;
}

.qr-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 24px;
    text-align: center;
}

.qr-card img {
    width: 180px;
    height: 180px;
    margin: 0 auto 16px;
    border-radius: var(--radius);
}

.qr-card p {
    font-size: 14px;
    color: var(--color-gray-600);
    line-height: 1.6;
}

/* ========== Footer ========== */
.footer {
    padding: 60px 0 30px;
    background: var(--color-gray-900);
    color: var(--color-white);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    height: 40px;
    margin-bottom: 16px;
}

.footer-name {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
}

.footer-desc {
    font-size: 14px;
    color: var(--color-gray-400);
    line-height: 1.7;
}

.footer-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-list li {
    margin-bottom: 12px;
}

.footer-list a {
    font-size: 14px;
    color: var(--color-gray-400);
    transition: var(--transition);
}

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

.footer-contact-item {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    font-size: 14px;
    color: var(--color-gray-400);
}

.footer-contact-item svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid var(--color-gray-800);
    text-align: center;
}

.footer-bottom p {
    font-size: 14px;
    color: var(--color-gray-500);
}

/* ========== Back to Top ========== */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition-slow);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--color-primary-dark);
    transform: translateY(-4px);
}

.back-to-top svg {
    width: 24px;
    height: 24px;
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-visual {
        display: none;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* 价格卡片在中等屏幕下显示2列 */
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
        max-width: 800px;
    }
    
    .trust-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .process-timeline {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
    
    .step-connector {
        display: none;
    }
    
    .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .contact-methods {
        max-width: 500px;
        margin: 0 auto;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header-nav {
        display: none;
    }
    
    .header-contact {
        display: none;
    }
    
    .header-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-tabs {
        flex-wrap: wrap;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .trust-grid {
        grid-template-columns: 1fr;
    }
    
    .process-timeline {
        grid-template-columns: 1fr;
    }
    
    .reviews-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-methods {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

/* ========== 登录功能样式 ========== */

/* Header 登录按钮区域 */
.header-auth {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* 登录按钮 */
.auth-login-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: transparent;
    border: 1.5px solid var(--color-primary);
    border-radius: var(--radius);
    color: var(--color-primary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.auth-login-btn svg {
    width: 18px;
    height: 18px;
}

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

/* 用户信息 */
.auth-user-info {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    background: var(--color-gray-100);
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.auth-user-info:hover {
    background: var(--color-gray-200);
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
}

.user-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-gray-700);
}

/* 用户下拉菜单 */
.user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 8px;
    background: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-gray-200);
    min-width: 180px;
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    z-index: 1000;
}

.user-dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    width: 100%;
    background: transparent;
    border: none;
    color: var(--color-gray-700);
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.dropdown-item svg {
    width: 18px;
    height: 18px;
    color: var(--color-gray-500);
}

.dropdown-item:hover {
    background: var(--color-gray-100);
    color: var(--color-primary);
}

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

/* ========== 登录弹窗 ========== */
.login-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-slow);
}

.login-modal.show {
    opacity: 1;
    visibility: visible;
}

.login-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.login-modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    width: 90%;
    max-width: 480px;
    padding: 32px;
    transition: var(--transition-slow);
}

.login-modal.show .login-modal-content {
    transform: translate(-50%, -50%) scale(1);
}

.login-modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gray-500);
    transition: var(--transition);
}

.login-modal-close svg {
    width: 20px;
    height: 20px;
}

.login-modal-close:hover {
    background: var(--color-gray-100);
    color: var(--color-gray-700);
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.login-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: 8px;
}

.login-subtitle {
    font-size: 14px;
    color: var(--color-gray-500);
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-label {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-gray-700);
}

/* 登录类型选项卡 */
.login-type-tabs {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
}

.login-type-tab {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 12px 8px;
    background: var(--color-gray-50);
    border: 1.5px solid var(--color-gray-200);
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
}

.login-type-tab svg {
    width: 20px;
    height: 20px;
    color: var(--color-gray-500);
}

.login-type-tab span {
    font-size: 12px;
    color: var(--color-gray-600);
}

.login-type-tab:hover {
    border-color: var(--color-primary);
    background: var(--color-white);
}

.login-type-tab.active {
    border-color: var(--color-primary);
    background: var(--color-primary);
}

.login-type-tab.active svg,
.login-type-tab.active span {
    color: var(--color-white);
}

/* 输入框 */
.form-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.form-input-icon {
    position: absolute;
    left: 12px;
    width: 20px;
    height: 20px;
    color: var(--color-gray-400);
    pointer-events: none;
}

.form-input {
    width: 100%;
    padding: 12px 40px;
    border: 1.5px solid var(--color-gray-300);
    border-radius: var(--radius);
    font-size: 14px;
    color: var(--color-gray-900);
    transition: var(--transition);
}

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

.form-input::placeholder {
    color: var(--color-gray-400);
}

/* 密码显示切换按钮 */
.password-toggle {
    position: absolute;
    right: 12px;
    width: 20px;
    height: 20px;
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--color-gray-400);
    transition: var(--transition);
    padding: 0;
}

.password-toggle:hover {
    color: var(--color-gray-600);
}

.password-toggle svg {
    width: 20px;
    height: 20px;
}

/* 登录按钮 */
.login-submit-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 24px;
    background: var(--color-primary);
    border: none;
    border-radius: var(--radius);
    color: var(--color-white);
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 8px;
}

.login-submit-btn:hover {
    background: var(--color-primary-dark);
}

.login-submit-btn:disabled {
    background: var(--color-gray-400);
    cursor: not-allowed;
}

.btn-loading {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.spinner {
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
}

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

.login-footer {
    text-align: center;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--color-gray-200);
}

.login-footer p {
    font-size: 14px;
    color: var(--color-gray-500);
}

/* ========== 后台管理面板 ========== */
.dashboard-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-slow);
}

.dashboard-modal.show {
    opacity: 1;
    visibility: visible;
}

.dashboard-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.dashboard-modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    width: 90%;
    max-width: 600px;
    transition: var(--transition-slow);
    overflow: hidden;
}

.dashboard-modal.show .dashboard-modal-content {
    transform: translate(-50%, -50%) scale(1);
}

.dashboard-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-white);
}

.dashboard-header h2 {
    font-size: 20px;
    font-weight: 600;
}

.dashboard-close {
    width: 32px;
    height: 32px;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    transition: var(--transition);
}

.dashboard-close svg {
    width: 20px;
    height: 20px;
}

.dashboard-close:hover {
    background: rgba(255, 255, 255, 0.3);
}

.dashboard-body {
    padding: 24px;
}

.dashboard-welcome {
    text-align: center;
    padding: 24px 0;
    border-bottom: 1px solid var(--color-gray-200);
    margin-bottom: 24px;
}

.welcome-avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 600;
    margin: 0 auto 16px;
}

.dashboard-welcome h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: 8px;
}

.dashboard-welcome p {
    font-size: 14px;
    color: var(--color-gray-500);
}

.dashboard-menu {
    display: grid;
    gap: 12px;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--color-gray-50);
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
}

.menu-item svg {
    width: 24px;
    height: 24px;
    color: var(--color-primary);
}

.menu-item span:first-of-type {
    flex: 1;
    font-size: 15px;
    font-weight: 500;
    color: var(--color-gray-700);
}

.menu-badge {
    padding: 4px 10px;
    background: var(--color-accent-light);
    color: var(--color-white);
    font-size: 12px;
    font-weight: 500;
    border-radius: 12px;
}

.menu-item:hover {
    background: var(--color-gray-100);
    transform: translateX(4px);
}

/* ========== 通知消息 ========== */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    border-left: 4px solid var(--color-primary);
    z-index: 10000;
    opacity: 0;
    transform: translateX(100%);
    transition: var(--transition-slow);
}

.notification.show {
    opacity: 1;
    transform: translateX(0);
}

.notification svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.notification span {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-gray-700);
}

.notification-success {
    border-left-color: var(--color-secondary);
}

.notification-success svg {
    color: var(--color-secondary);
}

.notification-error {
    border-left-color: #EF4444;
}

.notification-error svg {
    color: #EF4444;
}

/* ========== 响应式调整 ========== */
@media (max-width: 768px) {
    .header-auth {
        position: absolute;
        top: 100%;
        right: 0;
        background: var(--color-white);
        padding: 16px;
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-lg);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        transition: var(--transition);
    }
    
    .header-auth.show {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    
    .login-type-tabs {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .login-modal-content,
    .dashboard-modal-content {
        width: 95%;
        padding: 24px;
    }
}