/* ==========================================================================
   OWEI Technology - Main Stylesheet
   ========================================================================== */

/* CSS Custom Properties (Variables) */
:root {
    /* Colors */
    --primary-color: #0697FD;
    --primary-dark: #1557b0;
    --primary-light: #4285f4;
    --secondary-color: #34a853;
    --accent-color: #ea4335;
    --warning-color: #fbbc04;
    
    --text-primary: #333333;
    --text-secondary: #5f6368;
    --text-muted: #9aa0a6;
    --text-white: #ffffff;
    --text-grey: #cccccc;
    --text-active: #007DE0;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e8f0fe;
    --bg-dark: #202124;
    --bg-overlay: rgba(32, 33, 36, 0.6);
    
    --border-color: #dadce0;
    --border-light: #f1f3f4;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #1a73e8 0%, #4285f4 100%);
    --gradient-secondary: linear-gradient(135deg, #34a853 0%, #137333 100%);
    --gradient-hero: linear-gradient(135deg, #1a73e8 0%, #9c27b0 50%, #e91e63 100%);
    
    /* Typography */
    --font-family-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-family-secondary: 'SF Pro Display', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Font Sizes */
    --font-size-xs: 0.75rem;    /* 12px */
    --font-size-sm: 0.875rem;   /* 14px */
    --font-size-base: 1rem;     /* 16px */
    --font-size-lg: 1.125rem;   /* 18px */
    --font-size-xl: 1.25rem;    /* 20px */
    --font-size-2xl: 1.5rem;    /* 24px */
    --font-size-3xl: 1.875rem;  /* 30px */
    --font-size-4xl: 2.25rem;   /* 36px */
    --font-size-5xl: 3rem;      /* 48px */
    --font-size-6xl: 3.75rem;   /* 60px */
    
    /* Line Heights */
    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    
    /* Spacing */
    --spacing-xs: 0.25rem;   /* 4px */
    --spacing-sm: 0.5rem;    /* 8px */
    --spacing-md: 1rem;      /* 16px */
    --spacing-lg: 1.5rem;    /* 24px */
    --spacing-xl: 2rem;      /* 32px */
    --spacing-2xl: 3rem;     /* 48px */
    --spacing-3xl: 4rem;     /* 64px */
    --spacing-4xl: 6rem;     /* 96px */
    
    /* Border Radius */
    --border-radius-sm: 0.25rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 0.75rem;
    --border-radius-xl: 1rem;
    --border-radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-base: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* ==========================================================================
   Base Styles
   ========================================================================== */

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

html {
    font-size: 16px;
    line-height: 1.5;
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
    scroll-behavior: smooth;
    max-width: 100%;
    display: flex;
    justify-content: center;
}

body {
    font-family: var(--font-family-primary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    max-width: 1980px;
}

/* Skip link for accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    z-index: var(--z-tooltip);
    padding: 8px 16px;
    background: var(--bg-dark);
    color: var(--text-white);
    text-decoration: none;
    border-radius: var(--border-radius-md);
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: 6px;
}

/* Container */
.container {
    width: 100%;
    max-width: 1350px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-lg);
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 var(--spacing-xl);
    }
}


/* ==========================================================================
   Typography
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
    margin: 0;
    font-weight: 600;
    line-height: var(--line-height-tight);
    color: var(--text-primary);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-3xl); }
h4 { font-size: var(--font-size-2xl); }
h5 { font-size: var(--font-size-xl); }
h6 { font-size: var(--font-size-lg); }

p {
    margin: 0;
    line-height: var(--line-height-relaxed);
}

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

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

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-size: var(--font-size-base);
    font-weight: 500;
    line-height: 1;
    text-align: center;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--border-radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
    user-select: none;
}

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.25);
}

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

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

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

.btn-outline:hover {
    color: var(--text-white);
    background: var(--primary-color);
    transform: translateY(-2px);
}

.btn-large {
    padding: 16px 32px;
    font-size: var(--font-size-lg);
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background: rgba(255, 255, 255, 0.95);
    /* background: transparent; */
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-light);
    transition: all var(--transition-base);
    height: 78px;
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

/* Backdrop for dropdowns */
.nav-backdrop {
    position: fixed;
    top: var(--header-height, 78px);
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.35);
    backdrop-filter: blur(2px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--transition-base), visibility var(--transition-base);
    z-index: var(--z-dropdown);
}

.nav-backdrop.show {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.navbar {
    position: relative;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: nowrap;
    height: 100%;
}

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

/* Logo */
.navbar-brand {
    display: flex;
    align-items: center;
    position: absolute;
    left: 3%;
}

.logo-link {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--text-primary);
}

.logo-img {
    height: 40px;
    width: auto;
    /* margin-right: var(--spacing-sm); */
}

#logo-svg { 
    fill: #333333;
}

.logo-text {
    font-size: var(--font-size-3xl);
    font-weight: 400;
    letter-spacing: 0.05em;
    color: var(--text-primary);
    white-space: nowrap;  /* 添加这行 - 防止文字换行 */
}

/* Mobile menu toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 30px;
    margin-left: 90%;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
}

.hamburger-line {
    width: 100%;
    height: 3px;
    background: var(--text-primary);
    border-radius: var(--border-radius-full);
    transition: all var(--transition-base);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

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

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Navigation menu */
.navbar-menu {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    /* margin-left: auto;  添加这行 - 确保导航菜单在右侧 */
}

.navbar-nav {
    height: 100%;
    display: flex;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 60px;  /* 可以调整为 var(--spacing-sm) 如果空间不够 */
    flex-wrap: nowrap;  /* 添加这行 - 防止导航项换行 */
}

.nav-item {
    position: relative;
}

.nav-link {
    height: var(--header-height, 78px);
    display: flex;
    align-items: center;
    padding: 0;
    font-size: var(--font-size-base);
    font-weight: 400;
    color: var(--text-primary);
    text-decoration: none;
    transition: all var(--transition-fast);
    white-space: nowrap;  /* 添加这行 - 防止文字换行 */
    min-width: max-content;  /* 添加这行 - 确保有足够宽度 */
    position: relative;
}

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--text-active);
}

/* When dropdown is open, highlight its nav link and rotate icon */
.dropdown.active > .nav-link {
    color: var(--text-active);
}

.dropdown.active .dropdown-icon {
    transform: rotate(180deg);
}

.dropdown-icon {
    margin-left: var(--spacing-xs);
    transition: transform var(--transition-fast);
}

/* .dropdown:hover .dropdown-icon {
    transform: rotate(180deg);
} */

/* Dropdown menus */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    /* transform: translateX(-50%); */
    min-width: 240px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: var(--z-modal);
}

/* Business Dropdown Styles */
.business-dropdown-menu {
    position: fixed;
    top: var(--header-height, 78px);
    left: 0;
    right: 0;
    width: 100vw;
    transform: none;
    padding: 2rem 0;
    background: var(--bg-primary);
    border: none;
    border-top: 1px solid var(--border-color);
    border-radius: 0;
    box-shadow: none;
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    height: 0;
    overflow: hidden;
    pointer-events: none;
    transition: opacity var(--transition-base), height var(--transition-base), visibility var(--transition-base);
}

.business-dropdown-content {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 2rem;
    z-index: var(--z-modal);
}

/* Generic two-part column layout inside dropdowns */
.dropdown-columns {
    display: grid;
    grid-template-columns: repeat(3, 448px);
    gap: 28px;
    justify-content: flex-start;
    height: 100%;
}

.dropdown-col {
    display: grid;
    grid-template-rows: auto 1fr;
    gap: 28px;
    height: 100%;
}

.dropdown-col-header {
    padding: 0.75rem 1rem;
    border-bottom: .5px solid #99999950;
    /* box-shadow: 0 2px 6px rgba(0,0,0,0.04); */
    background: var(--bg-primary);
}

.dropdown-col-header h4 {
    font-size: var(--font-size-base);
    font-weight: 400;
    color: var(--text-primary);
}

.dropdown-col-body {
    background: var(--bg-primary);
    /* border-radius: var(--border-radius-lg); */
    overflow: hidden;
}

.business-col-link {
    display: block;
    height: 100%;
}

.business-category-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.business-category-card {
    display: block;
    background: white;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    text-decoration: none;
    transition: all var(--transition-base);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    z-index: var(--z-modal);
}

.business-category-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.business-card-image {
    position: relative;
    width: 100%;
    height: 252px;
    overflow: hidden;
}

.business-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-base);
    z-index: var(--z-modal);
}

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

.business-card-content {
    padding: 1.25rem;
}

.business-card-content h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.business-card-content p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.4;
    margin: 0;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    /* transform: translateX(-50%) translateY(8px); */
}

/* Disable hover for business dropdown */
.business-dropdown:hover .business-dropdown-menu {
    opacity: 0;
    visibility: hidden;
}

/* Business dropdown specific click behavior */
.business-dropdown.active .business-dropdown-menu {
    opacity: 1;
    visibility: visible;
    height: 388px;
    pointer-events: auto;
}

.dropdown-content {
    padding: var(--spacing-sm);
}

.dropdown-item {
    display: block;
    padding: var(--spacing-md);
    color: var(--text-primary);
    text-decoration: none;
    /* border-radius: var(--border-radius-md); */
    transition: background var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--bg-secondary);
}

.dropdown-item-content h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.dropdown-item-content p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* Mega menu */
.mega-menu {
    min-width: 800px;
    left: 50%;
    transform: translateX(-50%);
}

/* Products & Services (Mega) Dropdown - follow business behavior */
.mega-dropdown .mega-menu {
    position: fixed;
    top: var(--header-height, 78px);
    left: 0;
    right: 0;
    width: 100vw;
    transform: none;
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    border-radius: 0;
    box-shadow: none;
    opacity: 0;
    visibility: hidden;
    height: 0;
    overflow: hidden;
    pointer-events: none;
    transition: opacity var(--transition-base), height var(--transition-base), visibility var(--transition-base);
}

.mega-dropdown .mega-menu .mega-menu-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* Disable hover for mega dropdown */
.mega-dropdown:hover .mega-menu {
    opacity: 0;
    visibility: hidden;
}

.mega-dropdown.active .mega-menu {
    opacity: 1;
    visibility: visible;
    height: 388px;
    pointer-events: auto;
}

.mega-menu-content {
    display: grid;
    grid-template-columns: repeat(3, 448px);
    gap: 28px;
    padding: 2rem;
    justify-content: flex-start;
}

.mega-dropdown .mega-menu .mega-menu-content {
    max-width: 1440px;
    margin: 0 auto;
}

.mega-menu-column {
    min-width: 0;
}

.mega-menu-title {
    font-size: var(--font-size-base);
    font-weight: 400;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: .5px solid #99999950;
}

.mega-menu-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.mega-menu-list a {
    display: block;
    padding: var(--spacing-sm);
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--border-radius-md);
    transition: all var(--transition-fast);
}

/* Non-link version for items */
.mega-menu-list .mega-link {
    display: block;
    padding: 7px;
    color: var(--text-secondary);
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: var(--font-size-sm);
}

.mega-menu-list a:hover, .mega-menu-list .mega-link:hover {
    color: var(--primary-color);
    background: var(--bg-tertiary);
    transform: translateX(4px);
}

/* CTA Button in navbar */
.navbar-cta {
    margin-left: var(--spacing-lg);
}

/* ==========================================================================
   Main Content
   ========================================================================== */

.main-content {
    padding-top: 80px; /* Account for fixed header */
    display: flex;
    flex-direction: column;
    justify-content: center;
    /* min-height: calc(100vh - 80px); */
}

/* Hero Section */
.hero-section {
    position: relative;
    padding: var(--spacing-4xl) 0;
    background: var(--gradient-hero);
    overflow: hidden;
}

/* Hero Carousel */
.hero-carousel {
    position: relative;
    width: 100%;
    background: #000;
    overflow: hidden;
    --carousel-interval: 5000ms;
}

/* 1920px 屏幕下高度 642px；其它尺寸按 1920:642 比例缩放，且最小高度做保护 */
.hero-carousel .carousel-track {
    position: relative;
    display: flex;
    width: 100%;
    height: clamp(380px, calc(100vw * (750 / 1920)), 750px);
    will-change: transform;
    transition: transform var(--transition-base);
}

.hero-carousel .carousel-slide {
    position: relative;
    min-width: 100%;
    height: 100%;
}

.hero-carousel .carousel-slide img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-carousel .carousel-slide a {
    display: block;
    position: absolute;
    bottom: 65.5px;
    left: 128.5px;
    width: 200px;
    height: 48px;
    line-height: 48px;
    text-align: center;
    color: #fff;
    background: transparent;
    background-image: url('../images/icons/button.png')
}

.hero-carousel .carousel-slide a:hover {
    color: #eee;
    filter: brightness(0.95);
}

/* 左右切换按钮 - 仅 hover 轮播区域时显示 */
.hero-carousel .carousel-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 55px;
    height: 100%;
    border-radius: 9999px;
    border: none;
    background: transparent;
    color: #111;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    /* box-shadow: var(--shadow-md); */
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base), background var(--transition-fast), transform var(--transition-fast);
    z-index: var(--z-fixed);
}

.hero-carousel .carousel-nav img {
    width: 53px;
    height: 53px;
}

.hero-carousel:hover .carousel-nav {
    opacity: 1;
    visibility: visible;
}

.hero-carousel .carousel-nav:hover {
    /* background: #ffffff; */
}

.hero-carousel .carousel-nav.prev { left: 20px; }
.hero-carousel .carousel-nav.next { right: 20px; }

/* 长条形指示器 */
.hero-carousel .carousel-indicators {
    position: absolute;
    left: 50%;
    bottom: 20px;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: var(--z-fixed);
}

.hero-carousel .indicator {
    position: relative;
    width: 100px; /* 更长 */
    height: 3px; /* 更细 */
    border-radius: 0; /* 去圆角 */
    background: rgba(255,255,255,0.35);
    border: none;
    cursor: pointer;
    transition: background var(--transition-fast), transform var(--transition-fast);
    overflow: hidden;
}

.hero-carousel .indicator.active {
    background: rgba(255,255,255,0.45);
}

/* 激活时淡淡的进度条 */
.hero-carousel .indicator::after {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 0%;
    height: 100%;
    background: rgba(255,255,255,0.8);
    pointer-events: none;
}

.hero-carousel .indicator.animating::after {
    animation: carouselProgress var(--carousel-interval, 5000ms) linear forwards;
}

@keyframes carouselProgress {
    from { width: 0%; }
    to { width: 100%; }
}

/* 悬停暂停进度动画（与 JS 联动） */
.hero-carousel.is-paused .indicator.animating::after {
    animation: none;
    width: 100%;
}

@media (max-width: 768px) {
    .hero-carousel .carousel-nav {
        width: 38px;
        height: 38px;
    }
    .hero-carousel .indicator {
        width: 48px;
        height: 4px;
    }
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="20" cy="20" r="2" fill="rgba(255,255,255,0.1)"/><circle cx="80" cy="80" r="2" fill="rgba(255,255,255,0.1)"/></svg>') repeat;
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

.hero-section .container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

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

.hero-title {
    font-size: var(--font-size-6xl);
    font-weight: 700;
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-lg);
    background: linear-gradient(135deg, #ffffff 0%, #f0f0f0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-2xl);
    color: rgba(255, 255, 255, 0.9);
}

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

.hero-visual {
    position: relative;
    height: 500px;
}

.hero-animation {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    border-radius: var(--border-radius-xl);
    animation: pulse 3s ease-in-out infinite;
}


section {
    width: 100%;
    padding: 0 13.5%;
    background: #ffffff;
}

/* Partners (合作伙伴) */
.partners-section {
    padding: 0;
    background: #fff;
}

.partners-marquee {
    position: relative;
    overflow: hidden;
    width: 100%;
    padding: 80px 0;
    padding-top: 38px;
}

.partners-track {
    display: flex;
    align-items: center;
    gap: 200px; /* 组与组之间的间距，需与组内元素间距一致 */
    will-change: transform;
    animation: partnersScroll 12s linear infinite;
}

.partners-group {
    display: inline-flex;
    align-items: center;
    gap: 200px;
}

/* 取消额外 spacer，由 track 的 gap 负责组间距 */
.partner-spacer { display: none; width: 0; flex: 0 0 0; }

.partner-item {
    flex: 0 0 auto;
    height: 46px;
    display: flex;
    align-items: center;
}

.partner-item img {
    display: block;
    width: 158px;
    height: 46px;
    object-fit: contain;
    filter: grayscale(10%);
    transition: filter var(--transition-fast), transform var(--transition-fast);
}

.partner-item img:hover {
    filter: none;
    transform: translateY(-2px);
}

/* Pause on hover */
.partners-marquee:hover .partners-track {
    animation-play-state: paused;
}

/* 当由 JS 驱动时，禁用 CSS 动画以避免冲突 */
.partners-track.js-marquee {
    animation: none !important;
}

@keyframes partnersScroll {
    0% { transform: translate3d(0, 0, 0); }
    100% { transform: translate3d(-50%, 0, 0); }
}

.section-container {
    width: 100%;
    padding-top: 100px;
}

/* .section-header h2 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
} */

.section-header h2 {
    position: relative;
    font-size: var(--font-size-4xl);
    font-weight: 700;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 48px;
    height: 2px;
    background: var(--primary-color);
    border-radius: 2px;
}

@media (max-width: 768px) {
    section {
        padding: 0 5%;
    }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.7; }
    50% { transform: scale(1.05); opacity: 1; }
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
    background: var(--bg-dark);
    color: var(--text-white);
    min-height: 520px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 100px;
    box-sizing: border-box;
    position: relative;
    /* padding: var(--spacing-4xl) 0 var(--spacing-xl) 0; */
}

.footer .container {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    width: 100%;
    max-width: none;
    flex:1;
    /* min-height: 520px; */
}

.footer-main {
    display: grid;
    grid-template-columns: 2.5fr 1fr 1fr 1fr 1fr;
    /* gap: var(--spacing-3xl); */
    /* margin-bottom: var(--spacing-3xl); */
}


.footer-column {
    display: flex;
    flex-direction: column;
    /* align-items: center; */
    justify-content: center;
}

.footer-column:last-child {
    /* max-width: 180px; */
    transform: translateY(13px)
}

.footer-brand {
    max-width: 300px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    /* margin-right: 300px; */
}

.footer-logo {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

/* .footer-logo-img {
    height: 40px;
    width: auto;
    margin-right: var(--spacing-sm);
} */

.footer-logo-text {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-white);
}

.footer-logo-img {
    height: 100px;
    width: auto;
}

.footer-description {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-lg);
    line-height: var(--line-height-relaxed);
    font-size: 16.7px;
}

.footer-social {
    position: absolute;
    right: 139px;
    bottom: 60px;
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    /* background: rgba(255, 255, 255, 0.1); */
    color: var(--text-white);
    /* border-radius: var(--border-radius-lg); */
    transition: all var(--transition-base);
}

.social-link:hover {
    /* background: var(--primary-color); */
    color: #0697FD;
    transform: translateY(-2px);
}

@media (max-width: 768px) { 
.social-link {
    width: 32px;
    height: 32px;
    margin-top: 10px;
}
}

.footer-title {
    font-size: 16.7px;
    font-weight: 400;
    margin-bottom: var(--spacing-lg);
    color: var(--text-white);
}

.footer-links {
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: rgba(255, 255, 255, 1);
    text-decoration: none;
    transition: color var(--transition-fast);
    font-size: 14.2px;
}

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

.footer-contact {
    space-y: var(--spacing-sm);
}

.contact-item {
    display: flex;
    flex-direction: column;
    margin-bottom: var(--spacing-sm);
}

.contact-label {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 1);
    margin-bottom: var(--spacing-xs);
}

.contact-link {
    color: rgba(255, 255, 255, 1);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.contact-link:hover {
    color: var(--text-white);
}

.footer-bottom {
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.footer-copyright p {
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--font-size-sm);
}

.footer-legal {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-legal a {
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--font-size-sm);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

/* ==========================================================================
   Utility Components
   ========================================================================== */

/* Loading overlay */
.loading-overlay {
    pointer-events: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-overlay);
    backdrop-filter: blur(4px);
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.loading-overlay.show {
    opacity: 1;
    visibility: visible;
}

.loading-spinner {
    text-align: center;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Back to top button */
.back-to-top {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--text-white);
    border: none;
    border-radius: var(--border-radius-full);
    cursor: pointer;
    z-index: var(--z-fixed);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-lg);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */

/* Tablet styles */
@media (max-width: 1024px) {
    .mega-menu {
        min-width: 600px;
    }
    
    .mega-menu-content {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
        padding: var(--spacing-lg);
    }
    
    .hero-section .container {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
        text-align: center;
    }
    
    .hero-title {
        font-size: var(--font-size-5xl);
    }
    
    .footer-main {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-2xl);
    }
}

/* Mobile styles */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .navbar-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        border-top: 1px solid var(--border-color);
        box-shadow: var(--shadow-lg);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        transition: all var(--transition-base);
        flex-direction: column;
        align-items: stretch;
        padding: var(--spacing-lg);
        gap: 0;
        width: 100%;
    }
    
    .navbar-menu.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    
    .navbar-nav {
        flex-direction: column;
        gap: 0;
        width: 100%;
    }
    
    .nav-item {
        width: 100%;
        border-bottom: 1px solid var(--border-light);
    }
    
    .nav-link {
        width: 100%;
        padding: var(--spacing-md);
        justify-content: space-between;
    }
    
    .dropdown-menu {
        position: static;
        transform: none;
        min-width: auto;
        box-shadow: none;
        border: none;
        background: var(--bg-secondary);
        margin-left: var(--spacing-md);
        opacity: 1;
        visibility: visible;
        display: none;
    }
    
    .dropdown.active .dropdown-menu {
        display: block;
    }
    
    .mega-menu {
        min-width: auto;
    }
    
    .mega-menu-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        padding: var(--spacing-md);
    }
    
    /* Business dropdown mobile styles */
    .business-dropdown-menu {
        position: static;
        width: 100%;
        padding: var(--spacing-md);
        border: none;
        box-shadow: none;
        background: var(--bg-secondary);
    }
    
    .business-dropdown-content {
        max-width: none;
        padding: 0;
    }
    
    .business-category-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .business-card-image {
        height: 100px;
    }
    
    .business-card-content {
        padding: 1rem;
    }
    
    .navbar-cta {
        margin-left: 0;
        margin-top: var(--spacing-lg);
        width: 100%;
    }
    
    .navbar-cta .btn {
        width: 100%;
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-actions .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .footer-main {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
        text-align: center;
    }
    
    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
    }
    
    .back-to-top {
        bottom: var(--spacing-lg);
        right: var(--spacing-lg);
        width: 45px;
        height: 45px;
    }
}

/* Small mobile styles */
@media (max-width: 480px) {
    .hero-section {
        padding: var(--spacing-3xl) 0;
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .btn-large {
        padding: 14px 24px;
        font-size: var(--font-size-base);
    }
}

/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {
    .header,
    .footer,
    .mobile-menu-toggle,
    .back-to-top,
    .loading-overlay {
        display: none !important;
    }
    
    .main-content {
        padding-top: 0;
    }
    
    * {
        background: white !important;
        color: black !important;
        box-shadow: none !important;
    }
}

/* ==========================================================================
   High DPI / Retina Displays
   ========================================================================== */

@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .logo-img,
    .footer-logo-img {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* Desktop ≥1920px specific header sizing */
@media (min-width: 1920px) {
    .navbar {
        height: 78px;
    }

    .navbar-nav {
        gap: 80px;
    }

    .main-content {
        padding-top:  78px;
        min-height: calc(100vh - 78px);
    }
}