/*!
Theme Name: 救护车网 2025
Theme URI: https://www.cnjiuhu.com/
Author: 救护车网
Author URI: https://www.cnjiuhu.com/
Description: 现代化扁平设计主题，响应式移动端友好，性能优化
Version: 2.0.0
Tested up to: 6.4
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: LICENSE
Text Domain: jiuhu2025
Tags: custom-background, custom-logo, custom-menu, featured-images, threaded-comments, translation-ready, responsive-layout, flat-design

救护车网 2025 - Flat Design 2.0 Theme
*/

/* ============================================
   CSS Variables - Design Tokens
   ============================================ */
:root {
    /* Primary Colors - Vibrant Red (救护车主题色) */
    --color-primary: #E53935;
    --color-primary-dark: #C62828;
    --color-primary-light: #EF5350;
    
    /* Secondary Colors */
    --color-secondary: #1976D2;
    --color-secondary-dark: #1565C0;
    --color-secondary-light: #42A5F5;
    
    /* Neutral Colors */
    --color-white: #FFFFFF;
    --color-gray-50: #FAFAFA;
    --color-gray-100: #F5F5F5;
    --color-gray-200: #EEEEEE;
    --color-gray-300: #E0E0E0;
    --color-gray-400: #BDBDBD;
    --color-gray-500: #9E9E9E;
    --color-gray-600: #757575;
    --color-gray-700: #616161;
    --color-gray-800: #424242;
    --color-gray-900: #212121;
    --color-black: #000000;
    
    /* Semantic Colors */
    --color-success: #43A047;
    --color-warning: #FB8C00;
    --color-error: #E53935;
    --color-info: #1976D2;
    
    /* Typography */
    --font-family-base: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    --font-family-heading: var(--font-family-base);
    
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    
    /* Spacing */
    --spacing-0: 0;
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    --spacing-24: 6rem;
    
    /* Border Radius - Slight rounded corners for Flat 2.0 */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --radius-xl: 12px;
    --radius-full: 9999px;
    
    /* Container */
    --container-max: 1200px;
    --container-padding: var(--spacing-4);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Z-index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-tooltip: 600;
}

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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    color: var(--color-gray-800);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-heading);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-4);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
    margin-bottom: var(--spacing-4);
}

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

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

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

ul, ol {
    list-style: none;
}

/* ============================================
   Layout - Container
   ============================================ */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

.wrapper {
    width: 100%;
    max-width: var(--container-max);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

/* ============================================
   Buttons - Flat Design
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    line-height: 1;
    text-align: center;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
    -webkit-user-select: none;
    user-select: none;
    white-space: nowrap;
}

.btn:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Primary Button */
.btn-primary {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
}

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

/* Secondary Button */
.btn-secondary {
    background-color: var(--color-secondary);
    border-color: var(--color-secondary);
    color: var(--color-white);
}

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

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

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

/* White Button */
.btn-white {
    background-color: var(--color-white);
    border-color: var(--color-white);
    color: var(--color-primary);
}

.btn-white:hover {
    background-color: var(--color-gray-100);
    border-color: var(--color-gray-100);
}

/* Large Button */
.btn-lg {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: var(--font-size-lg);
}

/* Small Button */
.btn-sm {
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-sm);
}

/* ============================================
   Header - Flat Design
   ============================================ */
.site-header {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-gray-200);
}

.header-top {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-2) 0;
    font-size: var(--font-size-sm);
}

.header-top .wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-2);
}

.header-top a {
    color: var(--color-white);
}

.header-top a:hover {
    opacity: 0.9;
}

.header-main {
    padding: var(--spacing-4) 0;
}

.header-main .wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-4);
}

/* Logo */
.site-logo {
    flex-shrink: 0;
}

.site-logo img {
    height: 48px;
    width: auto;
}

/* Navigation */
.main-nav {
    display: none;
}

.main-nav ul {
    display: flex;
    gap: var(--spacing-1);
    list-style: none;
    margin: 0;
    padding: 0;
}

.main-nav > ul > li {
    position: relative;
}

.main-nav a {
    display: block;
    padding: var(--spacing-2) var(--spacing-4);
    color: var(--color-gray-700);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.main-nav a:hover,
.main-nav .current-menu-item > a {
    background-color: var(--color-gray-100);
    color: var(--color-primary);
}

/* 有子菜单的项目添加箭头 */
.main-nav .menu-item-has-children > a {
    padding-right: var(--spacing-6);
    position: relative;
}

.main-nav .menu-item-has-children > a::after {
    content: '';
    position: absolute;
    right: var(--spacing-2);
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 5px solid currentColor;
    transition: transform var(--transition-fast);
}

.main-nav .menu-item-has-children:hover > a::after {
    transform: translateY(-50%) rotate(180deg);
}

/* 二级菜单样式 */
.main-nav .sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    padding: var(--spacing-2) 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity var(--transition-fast), visibility var(--transition-fast), transform var(--transition-fast);
    z-index: var(--z-dropdown);
    display: flex;
    flex-direction: column;
    gap: 0;
}

.main-nav .menu-item-has-children:hover > .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.main-nav .sub-menu li {
    position: relative;
}

.main-nav .sub-menu a {
    padding: var(--spacing-2) var(--spacing-4);
    border-radius: 0;
    white-space: nowrap;
    font-size: var(--font-size-sm);
}

.main-nav .sub-menu a:hover {
    background-color: var(--color-gray-50);
    color: var(--color-primary);
}

/* 三级菜单（如需要） */
.main-nav .sub-menu .sub-menu {
    top: 0;
    left: 100%;
    margin-left: 0;
}

.main-nav .sub-menu .menu-item-has-children > a::after {
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
    border-left: 5px solid currentColor;
    border-right: none;
    right: var(--spacing-3);
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.header-phone {
    display: none;
    align-items: center;
    gap: var(--spacing-2);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
}

.header-phone svg {
    width: 20px;
    height: 20px;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    padding: 4px;
    background: none;
    border: none;
    cursor: pointer;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-gray-800);
    border-radius: var(--radius-full);
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.menu-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

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

.menu-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Navigation */
.mobile-nav {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-white);
    z-index: var(--z-modal);
    padding: var(--spacing-20) var(--spacing-4) var(--spacing-4);
    overflow-y: auto;
}

.mobile-nav.active {
    display: block;
}

.mobile-nav > ul {
    display: flex;
    flex-direction: column;
    list-style: none;
    margin: 0;
    padding: 0;
}

.mobile-nav > ul > li {
    border-bottom: 1px solid var(--color-gray-200);
}

.mobile-nav a {
    display: block;
    padding: var(--spacing-4);
    color: var(--color-gray-800);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
}

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

/* 移动端二级菜单 */
.mobile-nav .menu-item-has-children {
    position: relative;
}

.mobile-nav .menu-item-has-children > a {
    padding-right: var(--spacing-12);
}

.mobile-nav .sub-menu-toggle {
    position: absolute;
    top: 0;
    right: 0;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    border-left: 1px solid var(--color-gray-200);
    cursor: pointer;
    color: var(--color-gray-600);
    transition: color var(--transition-fast), transform var(--transition-fast);
}

.mobile-nav .sub-menu-toggle svg {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-fast);
}

.mobile-nav .sub-menu-toggle.active svg {
    transform: rotate(180deg);
}

.mobile-nav .sub-menu {
    display: none;
    list-style: none;
    margin: 0;
    padding: 0;
    background-color: var(--color-gray-50);
}

.mobile-nav .sub-menu.active {
    display: block;
}

.mobile-nav .sub-menu li {
    border-top: 1px solid var(--color-gray-200);
}

.mobile-nav .sub-menu a {
    padding: var(--spacing-3) var(--spacing-4) var(--spacing-3) var(--spacing-8);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    color: var(--color-gray-700);
}

.mobile-nav .sub-menu a:hover {
    color: var(--color-primary);
    background-color: var(--color-gray-100);
}

.mobile-nav-close {
    position: absolute;
    top: var(--spacing-4);
    right: var(--spacing-4);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    cursor: pointer;
    font-size: var(--font-size-2xl);
    color: var(--color-gray-600);
}

/* ============================================
   Hero Section - Flat Design
   ============================================ */
.hero {
    position: relative;
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-12) 0;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background-color: var(--color-primary-dark);
    clip-path: polygon(20% 0, 100% 0, 100% 100%, 0% 100%);
    opacity: 0.3;
}

.hero .wrapper {
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 600px;
}

.hero-badge {
    display: inline-block;
    padding: var(--spacing-2) var(--spacing-4);
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-3);
}

.hero h1 {
    color: var(--color-white);
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-4);
    line-height: var(--line-height-tight);
}

.hero-text {
    font-size: var(--font-size-base);
    opacity: 0.95;
    margin-bottom: var(--spacing-6);
    line-height: var(--line-height-relaxed);
    max-width: 500px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-3);
}

.hero-actions .btn {
    padding: var(--spacing-3) var(--spacing-6);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
}

.hero-actions .btn svg {
    flex-shrink: 0;
}

/* ============================================
   Services Section - Flat Cards
   ============================================ */
.section {
    padding: var(--spacing-16) 0;
}

.section-alt {
    background-color: var(--color-gray-50);
}

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

.section-badge {
    display: inline-block;
    padding: var(--spacing-1) var(--spacing-3);
    background-color: var(--color-primary);
    color: var(--color-white);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-4);
}

.section-title {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-4);
}

.section-subtitle {
    color: var(--color-gray-600);
    font-size: var(--font-size-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Service Cards - Flat Design */
.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
}

.service-card {
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: var(--spacing-8);
    text-align: center;
    transition: border-color var(--transition-fast);
}

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

.service-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-6);
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-primary);
    border-radius: var(--radius-lg);
}

.service-icon img,
.service-icon svg {
    width: 32px;
    height: 32px;
    filter: brightness(0) invert(1);
}

.service-card h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-3);
}

.service-card h3 a {
    color: var(--color-gray-900);
}

.service-card h3 a:hover {
    color: var(--color-primary);
}

.service-card p {
    color: var(--color-gray-600);
    margin-bottom: 0;
}

/* ============================================
   About Section
   ============================================ */
.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-12);
    align-items: center;
}

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

.about-content .section-badge {
    margin-bottom: var(--spacing-4);
}

.about-content h2 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-4);
}

.about-content p {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-6);
}

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-6);
    margin-top: var(--spacing-12);
}

.stat-item {
    text-align: center;
    padding: var(--spacing-6);
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
}

.stat-value {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: var(--spacing-2);
}

.stat-value span {
    font-size: var(--font-size-xl);
}

.stat-label {
    color: var(--color-gray-600);
    font-size: var(--font-size-sm);
}

/* ============================================
   Features Section
   ============================================ */
.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
}

.feature-card {
    display: flex;
    gap: var(--spacing-4);
    padding: var(--spacing-6);
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
}

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

.feature-icon img,
.feature-icon svg {
    width: 24px;
    height: 24px;
    filter: brightness(0) invert(1);
}

.feature-content h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-2);
}

.feature-content p {
    color: var(--color-gray-600);
    font-size: var(--font-size-sm);
    margin-bottom: 0;
}

/* ============================================
   Steps Section
   ============================================ */
.steps-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
    counter-reset: step;
}

.step-item {
    position: relative;
    display: flex;
    gap: var(--spacing-6);
    align-items: flex-start;
}

.step-number {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-primary);
    color: var(--color-white);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    border-radius: var(--radius-full);
}

.step-content h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-2);
}

.step-content p {
    color: var(--color-gray-600);
    margin-bottom: 0;
}

.step-icon {
    width: 64px;
    height: 64px;
    margin-bottom: var(--spacing-4);
}

/* ============================================
   News/Blog Section
   ============================================ */
.news-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
}

.news-card {
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: border-color var(--transition-fast);
}

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

.news-card-image {
    aspect-ratio: 16/10;
    overflow: hidden;
}

.news-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.news-card:hover .news-card-image img {
    transform: scale(1.05);
}

.news-card-content {
    padding: var(--spacing-6);
}

.news-card-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-3);
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.news-card-category {
    display: inline-block;
    padding: var(--spacing-1) var(--spacing-2);
    background-color: var(--color-primary);
    color: var(--color-white);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
}

.news-card h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-2);
}

.news-card h3 a {
    color: var(--color-gray-900);
}

.news-card h3 a:hover {
    color: var(--color-primary);
}

.news-card p {
    color: var(--color-gray-600);
    font-size: var(--font-size-sm);
    margin-bottom: 0;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ============================================
   News List - 图文模式
   ============================================ */
.news-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-6);
}

.news-list-item {
    display: flex;
    flex-direction: column;
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: border-color var(--transition-fast);
}

.news-list-item:hover {
    border-color: var(--color-primary);
}

.news-list-item .news-image {
    flex-shrink: 0;
    width: 100%;
    aspect-ratio: 16/10;
    overflow: hidden;
}

.news-list-item .news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.news-list-item:hover .news-image img {
    transform: scale(1.03);
}

.news-list-item .news-content {
    flex: 1;
    padding: var(--spacing-5);
    display: flex;
    flex-direction: column;
}

.news-list-item .news-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-3);
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.news-list-item .news-meta svg {
    width: 14px;
    height: 14px;
    vertical-align: middle;
    margin-right: 2px;
}

.news-list-item .news-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-3);
    line-height: var(--line-height-tight);
}

.news-list-item .news-title a {
    color: var(--color-gray-900);
}

.news-list-item .news-title a:hover {
    color: var(--color-primary);
}

.news-list-item .news-excerpt {
    color: var(--color-gray-600);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-4);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-list-item .news-readmore {
    margin-top: auto;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    color: var(--color-primary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
}

.news-list-item .news-readmore:hover {
    color: var(--color-primary-dark);
}

.news-list-item .news-readmore svg {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-fast);
}

.news-list-item:hover .news-readmore svg {
    transform: translateX(4px);
}

/* 图文模式响应式 - 平板及以上 */
@media (min-width: 768px) {
    .news-list-item {
        flex-direction: row;
    }
    
    .news-list-item .news-image {
        width: 280px;
        aspect-ratio: auto;
        min-height: 200px;
    }
    
    .news-list-item .news-content {
        padding: var(--spacing-6);
    }
    
    .news-list-item .news-title {
        font-size: var(--font-size-xl);
    }
}

/* 图文模式响应式 - 桌面 */
@media (min-width: 1024px) {
    .news-list-item .news-image {
        width: 320px;
    }
}

/* ============================================
   Testimonials Section
   ============================================ */
.testimonials-section {
    background-color: var(--color-gray-900);
    color: var(--color-white);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
    align-items: center;
}

.testimonial-card {
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-8);
}

.testimonial-text {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-6);
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.testimonial-avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    object-fit: cover;
}

.testimonial-name {
    font-weight: var(--font-weight-semibold);
}

.testimonial-location {
    font-size: var(--font-size-sm);
    opacity: 0.7;
}

/* ============================================
   Footer - Flat Design
   ============================================ */
.site-footer {
    background-color: var(--color-gray-900);
    color: var(--color-gray-300);
}

.footer-main {
    padding: var(--spacing-16) 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
}

.footer-brand {
    margin-bottom: var(--spacing-4);
}

.footer-logo {
    height: 40px;
    margin-bottom: var(--spacing-4);
    filter: brightness(0) invert(1);
}

.footer-brand p {
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-4);
}

.footer-phone {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
}

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

.footer-nav h4 {
    color: var(--color-white);
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-4);
}

.footer-nav ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.footer-nav a {
    color: var(--color-gray-400);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    padding: var(--spacing-6) 0;
    border-top: 1px solid var(--color-gray-800);
}

.footer-bottom .wrapper {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
    text-align: center;
}

.footer-copyright {
    font-size: var(--font-size-sm);
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-2);
}

.footer-copyright a {
    color: var(--color-gray-400);
}

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

.footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-4);
}

.footer-links a {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    color: var(--color-gray-400);
    font-size: var(--font-size-sm);
}

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

.footer-links img {
    flex-shrink: 0;
    width: 14px;
    height: 14px;
}

/* ============================================
   Mobile Bottom Navigation
   ============================================ */
.mobile-bottom-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    border-top: 1px solid var(--color-gray-200);
    z-index: var(--z-sticky);
    padding: var(--spacing-2) 0;
    padding-bottom: calc(var(--spacing-2) + env(safe-area-inset-bottom, 0));
}

.mobile-bottom-nav-list {
    display: flex;
    justify-content: space-around;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
}

.mobile-bottom-nav-item {
    flex: 1;
}

.mobile-bottom-nav-item a,
.mobile-bottom-nav-item button {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-1);
    padding: var(--spacing-2);
    color: var(--color-gray-600);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    background: none;
    border: none;
    cursor: pointer;
    width: 100%;
    transition: color var(--transition-fast);
}

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

.mobile-bottom-nav-item svg {
    width: 24px;
    height: 24px;
}

/* 为底部导航留出空间 */
@media (max-width: 767px) {
    .mobile-bottom-nav {
        display: block;
    }
    
    body {
        padding-bottom: 70px;
    }
    
    .site-footer {
        padding-bottom: var(--spacing-20);
    }
}

/* ============================================
   WeChat Modal
   ============================================ */
.wechat-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.6);
    z-index: var(--z-modal);
    align-items: center;
    justify-content: center;
    padding: var(--spacing-4);
}

.wechat-modal.active {
    display: flex;
}

.wechat-modal-content {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-6);
    max-width: 320px;
    width: 100%;
    text-align: center;
    position: relative;
}

.wechat-modal-close {
    position: absolute;
    top: var(--spacing-3);
    right: var(--spacing-3);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-gray-500);
    border-radius: var(--radius-full);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.wechat-modal-close:hover {
    background-color: var(--color-gray-100);
    color: var(--color-gray-800);
}

.wechat-modal-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-4);
    color: var(--color-gray-900);
}

.wechat-modal-qrcode {
    width: 200px;
    height: 200px;
    margin: 0 auto var(--spacing-4);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.wechat-modal-qrcode img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.wechat-modal-id {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3);
    background-color: var(--color-gray-50);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    color: var(--color-gray-700);
}

.wechat-modal-id strong {
    color: var(--color-gray-900);
    font-weight: var(--font-weight-semibold);
}

.wechat-modal-tip {
    margin-top: var(--spacing-3);
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
}

.wechat-copy-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    width: 100%;
    margin-top: var(--spacing-4);
}

.wechat-copy-btn.copied {
    background-color: var(--color-success);
    border-color: var(--color-success);
}

/* ============================================
   Sidebar
   ============================================ */
.sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-6);
}

.sidebar-widget {
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: var(--spacing-6);
}

.sidebar-widget h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-4);
    padding-bottom: var(--spacing-3);
    border-bottom: 2px solid var(--color-primary);
}

/* Search Widget */
.search-form {
    display: flex;
}

.search-form input[type="text"] {
    flex: 1;
    padding: var(--spacing-3) var(--spacing-4);
    border: 1px solid var(--color-gray-300);
    border-right: none;
    border-radius: var(--radius-md) 0 0 var(--radius-md);
    font-size: var(--font-size-base);
    outline: none;
}

.search-form input[type="text"]:focus {
    border-color: var(--color-primary);
}

.search-form button {
    padding: var(--spacing-3) var(--spacing-4);
    background-color: var(--color-primary);
    border: 1px solid var(--color-primary);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    color: var(--color-white);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.search-form button:hover {
    background-color: var(--color-primary-dark);
}

/* Categories Widget */
.categories-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
}

.categories-list a {
    display: inline-block;
    padding: var(--spacing-2) var(--spacing-3);
    background-color: var(--color-gray-100);
    color: var(--color-gray-700);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.categories-list a:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
}

/* Recent Posts Widget */
.recent-posts {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.recent-post-item {
    display: flex;
    gap: var(--spacing-3);
}

.recent-post-image {
    flex-shrink: 0;
    width: 80px;
    height: 60px;
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.recent-post-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.recent-post-content h4 {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-1);
    line-height: var(--line-height-tight);
}

.recent-post-content h4 a {
    color: var(--color-gray-800);
}

.recent-post-content h4 a:hover {
    color: var(--color-primary);
}

.recent-post-date {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
}

/* Tags Widget */
.tags-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
}

.tags-list a {
    display: inline-block;
    padding: var(--spacing-1) var(--spacing-3);
    background-color: var(--color-gray-100);
    color: var(--color-gray-600);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.tags-list a:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
}

/* ============================================
   Page Header - Inner Pages
   ============================================ */
.page-header {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-12) 0;
    text-align: center;
}

.page-header h1 {
    color: var(--color-white);
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-4);
}

/* Breadcrumbs */
.breadcrumbs {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-sm);
}

.breadcrumbs li {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.breadcrumbs li:not(:last-child)::after {
    content: '/';
    opacity: 0.6;
}

.breadcrumbs a {
    color: var(--color-white);
    opacity: 0.8;
}

.breadcrumbs a:hover {
    opacity: 1;
}

.breadcrumbs span {
    opacity: 0.6;
}

/* ============================================
   Article/Post Content
   ============================================ */
.content-area {
    padding: var(--spacing-12) 0;
}

.content-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
}

.article-content {
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: var(--spacing-6);
}

.article-header {
    margin-bottom: var(--spacing-6);
    padding-bottom: var(--spacing-6);
    border-bottom: 1px solid var(--color-gray-200);
}

.article-header h1 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-4);
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-4);
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.article-body {
    line-height: var(--line-height-relaxed);
}

.article-body h2 {
    font-size: var(--font-size-xl);
    margin-top: var(--spacing-8);
    margin-bottom: var(--spacing-4);
}

.article-body h3 {
    font-size: var(--font-size-lg);
    margin-top: var(--spacing-6);
    margin-bottom: var(--spacing-3);
}

.article-body p {
    margin-bottom: var(--spacing-4);
}

.article-body ul,
.article-body ol {
    margin-bottom: var(--spacing-4);
    padding-left: var(--spacing-6);
}

.article-body ul {
    list-style: disc;
}

.article-body ol {
    list-style: decimal;
}

.article-body li {
    margin-bottom: var(--spacing-2);
}

.article-body img {
    border-radius: var(--radius-md);
    margin: var(--spacing-6) 0;
}

.article-body blockquote {
    border-left: 4px solid var(--color-primary);
    padding-left: var(--spacing-6);
    margin: var(--spacing-6) 0;
    font-style: italic;
    color: var(--color-gray-600);
}

/* Article Tags */
.article-tags {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-2);
    margin-top: var(--spacing-8);
    padding-top: var(--spacing-6);
    border-top: 1px solid var(--color-gray-200);
}

.article-tags-label {
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-700);
}

/* Post Navigation */
.post-navigation {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-4);
    margin-top: var(--spacing-8);
    padding-top: var(--spacing-6);
    border-top: 1px solid var(--color-gray-200);
}

.post-nav-item {
    padding: var(--spacing-4);
    background-color: var(--color-gray-50);
    border-radius: var(--radius-md);
}

.post-nav-label {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-1);
}

.post-nav-item a {
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-800);
}

.post-nav-item a:hover {
    color: var(--color-primary);
}

/* Related Posts */
.related-posts {
    margin-top: var(--spacing-8);
    padding-top: var(--spacing-6);
    border-top: 1px solid var(--color-gray-200);
}

.related-posts h2 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-6);
}

.related-posts-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-3);
}

.related-posts-list li {
    padding: var(--spacing-3);
    background-color: var(--color-gray-50);
    border-radius: var(--radius-md);
}

.related-posts-list a {
    color: var(--color-gray-700);
    font-size: var(--font-size-sm);
}

.related-posts-list a:hover {
    color: var(--color-primary);
}

/* ============================================
   Pagination
   ============================================ */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-2);
    margin-top: var(--spacing-8);
}

.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 var(--spacing-3);
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    color: var(--color-gray-700);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.pagination a:hover {
    background-color: var(--color-gray-100);
    border-color: var(--color-gray-400);
}

.pagination .current {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
}

/* ============================================
   Forms
   ============================================ */
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="url"],
input[type="password"],
input[type="search"],
input[type="number"],
textarea,
select {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    color: var(--color-gray-800);
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    outline: none;
    transition: border-color var(--transition-fast);
}

input:focus,
textarea:focus,
select:focus {
    border-color: var(--color-primary);
}

textarea {
    min-height: 120px;
    resize: vertical;
}

label {
    display: block;
    margin-bottom: var(--spacing-2);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-700);
}

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

.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-secondary); }
.text-white { color: var(--color-white); }
.text-muted { color: var(--color-gray-500); }

.bg-primary { background-color: var(--color-primary); }
.bg-secondary { background-color: var(--color-secondary); }
.bg-white { background-color: var(--color-white); }
.bg-gray { background-color: var(--color-gray-50); }

.mt-0 { margin-top: 0; }
.mt-4 { margin-top: var(--spacing-4); }
.mt-8 { margin-top: var(--spacing-8); }
.mb-0 { margin-bottom: 0; }
.mb-4 { margin-bottom: var(--spacing-4); }
.mb-8 { margin-bottom: var(--spacing-8); }

.hidden { display: none; }
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ============================================
   Responsive - Tablet (768px+)
   ============================================ */
@media (min-width: 768px) {
    :root {
        --container-padding: var(--spacing-6);
    }
    
    h1 { font-size: var(--font-size-5xl); }
    
    .hero h1 {
        font-size: var(--font-size-5xl);
    }
    
    .menu-toggle {
        display: none;
    }
    
    .main-nav {
        display: block;
    }
    
    .header-phone {
        display: flex;
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .steps-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .content-grid {
        grid-template-columns: 1fr 300px;
    }
    
    .post-navigation {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .related-posts-list {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-bottom .wrapper {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

/* ============================================
   Responsive - Desktop (1024px+)
   ============================================ */
@media (min-width: 1024px) {
    .hero {
        padding: var(--spacing-16) 0;
    }
    
    .hero h1 {
        font-size: var(--font-size-4xl);
    }
    
    .services-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .steps-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .news-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    .site-header,
    .site-footer,
    .sidebar,
    .btn,
    .pagination {
        display: none;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.5;
        color: #000;
        background: #fff;
    }
    
    a {
        color: #000;
        text-decoration: underline;
    }
    
    .article-content {
        border: none;
        padding: 0;
    }
}

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

:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Skip Link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    padding: var(--spacing-2) var(--spacing-4);
    background-color: var(--color-primary);
    color: var(--color-white);
    z-index: var(--z-tooltip);
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: 0;
}