/* ----- Base Styles ----- */
:root {
    /* Main Color Scheme */
    --tantrung-primary: #2563eb;
    --tantrung-primary-light: #3b82f6;
    --tantrung-primary-dark: #1d4ed8;
    --tantrung-secondary: #6d28d9;
    --tantrung-secondary-light: #8b5cf6;
    --tantrung-accent: #10b981;
    
    /* Neutral Colors */
    --tantrung-dark: #111827;
    --tantrung-gray-900: #1f2937;
    --tantrung-gray-800: #374151;
    --tantrung-gray-700: #4b5563;
    --tantrung-gray-600: #6b7280;
    --tantrung-gray-500: #9ca3af;
    --tantrung-gray-400: #d1d5db;
    --tantrung-gray-300: #e5e7eb;
    --tantrung-gray-200: #f3f4f6;
    --tantrung-gray-100: #f9fafb;
    --tantrung-white: #ffffff;
    
    /* Typography */
    --tantrung-font-primary: 'Roboto', 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
    --tantrung-font-secondary: 'Open Sans', 'SF Pro Text', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
    
    /* Spacing */
    --tantrung-spacing-xs: 0.25rem;
    --tantrung-spacing-sm: 0.5rem;
    --tantrung-spacing-md: 1rem;
    --tantrung-spacing-lg: 1.5rem;
    --tantrung-spacing-xl: 2rem;
    --tantrung-spacing-2xl: 3rem;
    --tantrung-spacing-3xl: 4rem;
    
    /* Shadows */
    --tantrung-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --tantrung-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --tantrung-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --tantrung-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Border Radius */
    --tantrung-radius-sm: 0.25rem;
    --tantrung-radius-md: 0.5rem;
    --tantrung-radius-lg: 0.75rem;
    --tantrung-radius-xl: 1rem;
    --tantrung-radius-2xl: 1.5rem;
    --tantrung-radius-full: 9999px;
    
    /* Transitions */
    --tantrung-transition-fast: 150ms ease;
    --tantrung-transition-normal: 300ms ease;
    --tantrung-transition-slow: 500ms ease;
}

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

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

body {
    font-family: var(--tantrung-font-secondary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--tantrung-gray-800);
    background-color: var(--tantrung-white);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--tantrung-font-primary);
    font-weight: 700;
    line-height: 1.2;
    color: var(--tantrung-dark);
    margin-bottom: var(--tantrung-spacing-md);
}

h1 {
    font-size: 3rem;
}

h2 {
    font-size: 2.25rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

p {
    margin-bottom: var(--tantrung-spacing-md);
}

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

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

ul {
    list-style: none;
}

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

/* ----- Utility Classes ----- */
.tantrung-container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--tantrung-spacing-lg);
}

.tantrung-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-family: var(--tantrung-font-primary);
    font-weight: 500;
    font-size: 1rem;
    line-height: 1;
    text-align: center;
    border-radius: var(--tantrung-radius-md);
    cursor: pointer;
    transition: all var(--tantrung-transition-fast);
    text-decoration: none;
}

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

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

.tantrung-button-secondary {
    background-color: transparent;
    color: var(--tantrung-primary);
    border: 2px solid var(--tantrung-primary);
}

.tantrung-button-secondary:hover {
    background-color: var(--tantrung-primary);
    color: var(--tantrung-white);
    transform: translateY(-2px);
    box-shadow: var(--tantrung-shadow-md);
}

.tantrung-section {
    padding: var(--tantrung-spacing-3xl) 0;
    will-change: opacity, transform;
}

.tantrung-section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--tantrung-spacing-2xl);
}

.tantrung-section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: var(--tantrung-spacing-md);
    background: linear-gradient(90deg, var(--tantrung-primary), var(--tantrung-secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    display: inline-block;
}

.tantrung-section-subtitle {
    font-size: 1.25rem;
    color: var(--tantrung-gray-600);
}

.tantrung-arrow {
    display: inline-block;
    transition: transform var(--tantrung-transition-fast);
}

a:hover .tantrung-arrow {
    transform: translateX(4px);
}

/* ----- Header & Navigation ----- */
.tantrung-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--tantrung-shadow-sm);
    transition: all var(--tantrung-transition-normal);
}

.tantrung-navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
    padding: 0 var(--tantrung-spacing-lg);
    max-width: 1280px;
    margin: 0 auto;
}

.tantrung-company-logo {
    width: 180px;
    height: 60px;
    background-image: url('img/company-logo.png');
    background-repeat: no-repeat;
    background-size: contain;
    background-position: center;
}

.tantrung-nav-links {
    display: flex;
    align-items: center;
    gap: var(--tantrung-spacing-lg);
}

.tantrung-nav-item {
    position: relative;
}

.tantrung-nav-item a {
    font-family: var(--tantrung-font-primary);
    font-weight: 500;
    color: var(--tantrung-gray-800);
    padding: var(--tantrung-spacing-sm) var(--tantrung-spacing-md);
    transition: color var(--tantrung-transition-fast);
}

.tantrung-nav-item a:hover,
.tantrung-nav-item.tantrung-active a {
    color: var(--tantrung-primary);
}

.tantrung-nav-item.tantrung-active a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 3px;
    background-color: var(--tantrung-primary);
    border-radius: var(--tantrung-radius-full);
}

.tantrung-dropdown {
    position: relative;
}

.tantrung-dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    width: 240px;
    background-color: var(--tantrung-white);
    border-radius: var(--tantrung-radius-md);
    box-shadow: var(--tantrung-shadow-lg);
    padding: var(--tantrung-spacing-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--tantrung-transition-fast);
    z-index: 100;
}

.tantrung-dropdown:hover .tantrung-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.tantrung-dropdown-menu li {
    margin-bottom: var(--tantrung-spacing-xs);
}

.tantrung-dropdown-menu li:last-child {
    margin-bottom: 0;
}

.tantrung-dropdown-menu a {
    display: block;
    padding: var(--tantrung-spacing-sm) var(--tantrung-spacing-md);
    border-radius: var(--tantrung-radius-sm);
}

.tantrung-dropdown-menu a:hover {
    background-color: var(--tantrung-gray-100);
}

.tantrung-nav-toggle {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    width: 30px;
    height: 22px;
    position: relative;
    z-index: 1010;
}

.tantrung-nav-toggle span {
    display: block;
    width: 100%;
    height: 3px;
    background-color: var(--tantrung-gray-800);
    border-radius: var(--tantrung-radius-full);
    position: absolute;
    left: 0;
    transition: all 0.3s ease;
}

.tantrung-nav-toggle span:nth-child(1) {
    top: 0;
}

.tantrung-nav-toggle span:nth-child(2) {
    top: 9px;
}

.tantrung-nav-toggle span:nth-child(3) {
    top: 18px;
}

.tantrung-nav-toggle.tantrung-toggle-active span:nth-child(1) {
    transform: rotate(45deg);
    top: 9px;
}

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

.tantrung-nav-toggle.tantrung-toggle-active span:nth-child(3) {
    transform: rotate(-45deg);
    top: 9px;
}

/* ----- Hero Section ----- */
.tantrung-hero {
    position: relative;
    height: 60vh;
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.tantrung-services-hero {
    /* 删除背景色 */
}

.tantrung-hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0; /* 修改z-index从-1到0 */
    /* 移除亮度过滤器 */
}

/* 添加黑色遮罩层 */
.tantrung-hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.4); /* 40%透明度的黑色遮罩 */
    z-index: 1;
}

.tantrung-hero-content {
    text-align: center;
    color: var(--tantrung-white);
    padding: 0 var(--tantrung-spacing-lg);
    max-width: 900px;
    z-index: 2; /* 提高z-index以确保内容位于遮罩之上 */
    animation: fadeIn 1s ease-out;
}

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

.tantrung-hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: var(--tantrung-spacing-lg);
    line-height: 1.1;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    color: var(--tantrung-white);
}

.tantrung-hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: var(--tantrung-spacing-xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    text-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

/* ----- Services Overview Section ----- */
.tantrung-services-overview-section {
    background-color: var(--tantrung-gray-100);
    position: relative;
}

.tantrung-services-overview-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(var(--tantrung-gray-300) 1px, transparent 1px);
    background-size: 30px 30px;
    opacity: 0.3;
    z-index: 0;
}

.tantrung-services-overview-content {
    display: flex;
    align-items: center;
    gap: var(--tantrung-spacing-2xl);
    position: relative;
    z-index: 1;
}

.tantrung-services-overview-text {
    flex: 1;
}

.tantrung-services-overview-image {
    flex: 1;
    border-radius: var(--tantrung-radius-lg);
    overflow: hidden;
    box-shadow: var(--tantrung-shadow-xl);
    transition: transform var(--tantrung-transition-normal);
}

.tantrung-services-overview-image:hover {
    transform: scale(1.02);
}

/* ----- Service Categories Section ----- */
.tantrung-service-categories-section {
    background-color: var(--tantrung-white);
    position: relative;
}

.tantrung-service-categories-section::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.05) 0%, rgba(59, 130, 246, 0) 70%);
    z-index: 0;
}

.tantrung-service-category {
    margin-bottom: var(--tantrung-spacing-3xl);
    position: relative;
    z-index: 1;
}

.tantrung-service-category:last-child {
    margin-bottom: 0;
}

.tantrung-service-category-content {
    display: flex;
    align-items: center;
    gap: var(--tantrung-spacing-2xl);
}

.tantrung-service-category-alt .tantrung-service-category-content {
    flex-direction: row-reverse;
}

.tantrung-service-category-text {
    flex: 1;
}

.tantrung-service-category-image {
    flex: 1;
    border-radius: var(--tantrung-radius-lg);
    overflow: hidden;
    box-shadow: var(--tantrung-shadow-lg);
    transition: transform var(--tantrung-transition-normal);
}

.tantrung-service-category-image:hover {
    transform: translateY(-10px);
    box-shadow: var(--tantrung-shadow-xl);
}

.tantrung-service-category-title {
    font-size: 2rem;
    margin-bottom: var(--tantrung-spacing-md);
    color: var(--tantrung-dark);
}

.tantrung-service-category-desc {
    font-size: 1.125rem;
    color: var(--tantrung-gray-700);
    margin-bottom: var(--tantrung-spacing-lg);
}

.tantrung-service-features {
    margin-bottom: var(--tantrung-spacing-xl);
}

.tantrung-service-features li {
    position: relative;
    padding-left: 28px;
    margin-bottom: var(--tantrung-spacing-sm);
}

.tantrung-service-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 16px;
    height: 16px;
    background-color: var(--tantrung-primary-light);
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='currentColor'%3E%3Cpath fill-rule='evenodd' d='M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z' clip-rule='evenodd' /%3E%3C/svg%3E");
    mask-size: contain;
    mask-repeat: no-repeat;
    mask-position: center;
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='currentColor'%3E%3Cpath fill-rule='evenodd' d='M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z' clip-rule='evenodd' /%3E%3C/svg%3E");
    -webkit-mask-size: contain;
    -webkit-mask-repeat: no-repeat;
    -webkit-mask-position: center;
}

/* ----- Service Process Section ----- */
.tantrung-service-process-section {
    background: linear-gradient(135deg, var(--tantrung-primary-dark), var(--tantrung-secondary));
    color: var(--tantrung-white);
    position: relative;
    overflow: hidden;
}

.tantrung-service-process-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0) 20%),
        radial-gradient(circle at 75% 60%, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0) 20%);
    z-index: 0;
}

.tantrung-service-process-section .tantrung-section-title,
.tantrung-service-process-section .tantrung-section-subtitle {
    color: var(--tantrung-white);
    background: none;
    -webkit-background-clip: unset;
    background-clip: unset;
}

.tantrung-service-process-section .tantrung-section-subtitle {
    opacity: 0.8;
}

.tantrung-process-steps {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.tantrung-process-step {
    display: flex;
    gap: var(--tantrung-spacing-lg);
    margin-bottom: var(--tantrung-spacing-xl);
    position: relative;
}

.tantrung-process-step:last-child {
    margin-bottom: 0;
}

.tantrung-process-step::after {
    content: '';
    position: absolute;
    top: 60px;
    left: 30px;
    width: 1px;
    height: calc(100% + var(--tantrung-spacing-xl));
    background-color: rgba(255, 255, 255, 0.2);
    z-index: -1;
}

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

.tantrung-process-step-number {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--tantrung-radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--tantrung-font-primary);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--tantrung-white);
}

.tantrung-process-step-content {
    padding-top: var(--tantrung-spacing-xs);
}

.tantrung-process-step-title {
    color: var(--tantrung-white);
    margin-bottom: var(--tantrung-spacing-sm);
}

.tantrung-process-step-desc {
    color: rgba(255, 255, 255, 0.8);
}

/* ----- Guarantees Section ----- */
.tantrung-guarantees-section {
    background-color: var(--tantrung-gray-100);
    position: relative;
}

.tantrung-guarantees-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: linear-gradient(135deg, var(--tantrung-primary-light) 0%, var(--tantrung-primary-light) 0.5%, transparent 0.5%, transparent 50%, var(--tantrung-primary-light) 50%, var(--tantrung-primary-light) 50.5%, transparent 50.5%, transparent 100%);
    background-size: 70px 70px;
    opacity: 0.03;
    z-index: -1;
}

.tantrung-guarantees-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--tantrung-spacing-xl);
}

.tantrung-guarantee-card {
    background-color: var(--tantrung-white);
    border-radius: var(--tantrung-radius-lg);
    padding: var(--tantrung-spacing-xl);
    box-shadow: var(--tantrung-shadow-md);
    transition: all var(--tantrung-transition-normal);
    position: relative;
    z-index: 1;
    text-align: center;
}

.tantrung-guarantee-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--tantrung-shadow-lg);
}

.tantrung-guarantee-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--tantrung-spacing-lg);
}

.tantrung-guarantee-title {
    font-size: 1.25rem;
    margin-bottom: var(--tantrung-spacing-md);
    color: var(--tantrung-gray-900);
}

.tantrung-guarantee-desc {
    color: var(--tantrung-gray-700);
    font-size: 0.95rem;
}

/* ----- Consultation Section ----- */
.tantrung-consultation-section {
    background-color: var(--tantrung-white);
    position: relative;
}

.tantrung-consultation-content {
    display: flex;
    align-items: center;
    gap: var(--tantrung-spacing-2xl);
    position: relative;
    z-index: 1;
    background: linear-gradient(to right, var(--tantrung-primary-dark), var(--tantrung-secondary));
    border-radius: var(--tantrung-radius-lg);
    overflow: hidden;
    padding: var(--tantrung-spacing-2xl);
    color: var(--tantrung-white);
}

.tantrung-consultation-text {
    flex: 1.2;
}

.tantrung-consultation-text h2 {
    color: var(--tantrung-white);
    font-size: 2.2rem;
    margin-bottom: var(--tantrung-spacing-md);
}

.tantrung-consultation-text p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--tantrung-spacing-lg);
}

.tantrung-consultation-benefits {
    margin-bottom: var(--tantrung-spacing-xl);
}

.tantrung-consultation-benefits li {
    position: relative;
    padding-left: 28px;
    margin-bottom: var(--tantrung-spacing-sm);
    color: rgba(255, 255, 255, 0.9);
}

.tantrung-consultation-benefits li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 16px;
    height: 16px;
    background-color: var(--tantrung-white);
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='currentColor'%3E%3Cpath fill-rule='evenodd' d='M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z' clip-rule='evenodd' /%3E%3C/svg%3E");
    mask-size: contain;
    mask-repeat: no-repeat;
    mask-position: center;
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='currentColor'%3E%3Cpath fill-rule='evenodd' d='M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z' clip-rule='evenodd' /%3E%3C/svg%3E");
    -webkit-mask-size: contain;
    -webkit-mask-repeat: no-repeat;
    -webkit-mask-position: center;
}

.tantrung-consultation-image {
    flex: 1;
    border-radius: var(--tantrung-radius-lg);
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

.tantrung-consultation-section .tantrung-button-primary {
    background-color: var(--tantrung-white);
    color: var(--tantrung-primary-dark);
    border-color: var(--tantrung-white);
}

.tantrung-consultation-section .tantrung-button-primary:hover {
    background-color: rgba(255, 255, 255, 0.9);
    border-color: rgba(255, 255, 255, 0.9);
    color: var(--tantrung-primary-dark);
}

/* ----- Footer ----- */
.tantrung-footer {
    background-color: var(--tantrung-gray-900);
    color: var(--tantrung-gray-400);
    padding: var(--tantrung-spacing-2xl) 0 var(--tantrung-spacing-lg);
}

.tantrung-footer-content {
    display: flex;
    justify-content: space-between;
    gap: var(--tantrung-spacing-2xl);
    margin-bottom: var(--tantrung-spacing-2xl);
}

.tantrung-footer-brand {
    flex: 1.5;
}

.tantrung-footer-desc {
    margin-top: var(--tantrung-spacing-md);
    color: var(--tantrung-gray-500);
    line-height: 1.6;
}

.tantrung-footer-links {
    flex: 2;
    display: flex;
    justify-content: space-between;
}

.tantrung-footer-title {
    color: var(--tantrung-white);
    font-size: 1.25rem;
    margin-bottom: var(--tantrung-spacing-lg);
    position: relative;
}

.tantrung-footer-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 30px;
    height: 3px;
    background-color: var(--tantrung-primary);
    border-radius: var(--tantrung-radius-full);
}

.tantrung-footer-menu li,
.tantrung-footer-contact li {
    margin-bottom: var(--tantrung-spacing-sm);
}

.tantrung-footer-menu a,
.tantrung-footer-contact a {
    color: var(--tantrung-gray-400);
    transition: color var(--tantrung-transition-fast);
}

.tantrung-footer-menu a:hover,
.tantrung-footer-contact a:hover {
    color: var(--tantrung-white);
}

.tantrung-footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--tantrung-spacing-lg);
    border-top: 1px solid var(--tantrung-gray-800);
}

.tantrung-copyright {
    font-size: 0.875rem;
    color: var(--tantrung-gray-600);
}

.tantrung-social-links {
    display: flex;
    gap: var(--tantrung-spacing-lg);
}

.tantrung-social-link {
    color: var(--tantrung-gray-400);
    font-size: 0.875rem;
}

.tantrung-social-link:hover {
    color: var(--tantrung-primary-light);
}

/* ----- Media Queries ----- */
@media (max-width: 1024px) {
    .tantrung-hero-title {
        font-size: 3rem;
    }
    
    .tantrung-footer-content {
        flex-direction: column;
    }
    
    .tantrung-footer-links {
        width: 100%;
    }
}

@media (max-width: 768px) {
    .tantrung-services-overview-content,
    .tantrung-service-category-content,
    .tantrung-consultation-content {
        flex-direction: column;
    }
    
    .tantrung-service-category-alt .tantrung-service-category-content {
        flex-direction: column;
    }
    
    .tantrung-navbar {
        height: auto;
        flex-direction: column;
        padding: var(--tantrung-spacing-md);
    }
    
    .tantrung-nav-links {
        flex-direction: column;
        width: 100%;
        margin: var(--tantrung-spacing-md) 0;
    }
    
    .tantrung-hero-title {
        font-size: 2.5rem;
    }
    
    .tantrung-hero-subtitle {
        font-size: 1.25rem;
    }
    
    .tantrung-footer-links {
        flex-direction: column;
        gap: var(--tantrung-spacing-xl);
    }
    
    .tantrung-footer-bottom {
        flex-direction: column;
        gap: var(--tantrung-spacing-md);
        text-align: center;
    }
    
    /* 移动端导航样式 */
    .tantrung-nav-toggle {
        display: block;
        position: absolute;
        top: 28px;
        right: 20px;
    }
    
    .tantrung-navbar {
        height: 80px;
        flex-direction: row;
        padding: 0 var(--tantrung-spacing-lg);
    }
    
    .tantrung-nav-links {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background-color: var(--tantrung-white);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        transform: translateX(100%);
        transition: transform 0.3s ease;
        z-index: 1000;
        margin: 0;
    }
    
    .tantrung-nav-links.tantrung-nav-active {
        transform: translateX(0);
    }
    
    .tantrung-nav-item {
        margin: var(--tantrung-spacing-md) 0;
    }
    
    .tantrung-dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        width: 100%;
        box-shadow: none;
        background-color: var(--tantrung-gray-100);
        display: none;
    }
    
    .tantrung-dropdown.active .tantrung-dropdown-menu {
        display: block;
    }
    
    .tantrung-nav-cta {
        margin-top: var(--tantrung-spacing-xl);
    }
    
    .tantrung-dropdown:hover .tantrung-dropdown-menu {
        display: none;
    }
    
    .tantrung-dropdown.active:hover .tantrung-dropdown-menu {
        display: block;
    }
}

@media (max-width: 480px) {
    .tantrung-guarantees-grid {
        grid-template-columns: 1fr;
    }
    
    .tantrung-section-title {
        font-size: 2rem;
    }
    
    .tantrung-service-category-title {
        font-size: 1.5rem;
    }
    
    .tantrung-consultation-text h2 {
        font-size: 1.8rem;
    }
}