/* ============================================
   恩派科技 - 企业官网营销网站样式表 (优化版)
   3D效果 | 响应式设计 | 下拉菜单 | 现代风格
   ============================================ */

/* CSS Variables */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --accent: #f59e0b;
    --accent-dark: #d97706;
    --success: #10b981;
    --danger: #ef4444;
    --dark: #0f172a;
    --dark-light: #1e293b;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    --white: #ffffff;
    --shadow-sm: 0 1px 2px 0 rgba(0,0,0,0.05);
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1);
    --shadow-3d: 0 25px 50px -12px rgba(0,0,0,0.25);
    --radius: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--gray-800);
    background: var(--gray-100);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
img { max-width: 100%; height: auto; display: block; }

/* Container */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================================
   3D Card Effects - Enhanced
   ============================================ */
.card-3d {
    perspective: 1000px;
    transform-style: preserve-3d;
}

.card-3d-inner {
    position: relative;
    width: 100%;
    transition: transform 0.6s cubic-bezier(0.23, 1, 0.32, 1);
    transform-style: preserve-3d;
    will-change: transform;
}

.card-3d:hover .card-3d-inner,
.card-3d.active .card-3d-inner {
    transform: translateZ(30px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg));
}

.card-3d-glow {
    position: absolute;
    inset: 0;
    border-radius: inherit;
    opacity: 0;
    transition: opacity 0.3s ease;
    background: radial-gradient(
        600px circle at var(--mx, 50%) var(--my, 50%),
        rgba(37, 99, 235, 0.15),
        transparent 40%
    );
    pointer-events: none;
    z-index: 1;
}

.card-3d:hover .card-3d-glow,
.card-3d.active .card-3d-glow {
    opacity: 1;
}

/* 3D Floating Animation */
@keyframes float3D {
    0%, 100% { transform: translateY(0) translateZ(0) rotateX(0deg); }
    25% { transform: translateY(-15px) translateZ(20px) rotateX(2deg); }
    50% { transform: translateY(-8px) translateZ(10px) rotateX(-1deg); }
    75% { transform: translateY(-20px) translateZ(30px) rotateX(1deg); }
}

.float-3d {
    animation: float3D 6s ease-in-out infinite;
    transform-style: preserve-3d;
}

/* ============================================
   Navigation with Dropdown Menus
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(226,232,240,0.6);
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255,255,255,0.95);
    box-shadow: var(--shadow);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--primary);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
}

/* Desktop Navigation with Dropdown */
.nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-item {
    position: relative;
}

.nav-item > a {
    padding: 8px 16px;
    border-radius: 8px;
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--gray-600);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-item > a:hover,
.nav-item > a.active {
    color: var(--primary);
    background: rgba(37,99,235,0.08);
}

.nav-item.dropdown > a::after {
    content: '107';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 0.75rem;
    transition: transform 0.3s ease;
}

.nav-item.dropdown:hover > a::after {
    transform: rotate(180deg);
}

/* Dropdown Menu */
.dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    min-width: 220px;
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--gray-200);
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px) rotateX(-10deg);
    transform-origin: top center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1001;
}

.nav-item.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) rotateX(0deg);
}

.dropdown-menu::before {
    content: '';
    position: absolute;
    top: -6px;
    left: 24px;
    width: 12px;
    height: 12px;
    background: white;
    border-left: 1px solid var(--gray-200);
    border-top: 1px solid var(--gray-200);
    transform: rotate(45deg);
}

.dropdown-menu li a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    font-size: 0.9rem;
    color: var(--gray-600);
    transition: var(--transition);
}

.dropdown-menu li a:hover {
    background: rgba(37,99,235,0.05);
    color: var(--primary);
    padding-left: 24px;
}

.dropdown-menu li a i {
    width: 20px;
    text-align: center;
    color: var(--primary);
    font-size: 0.85rem;
}

.dropdown-divider {
    height: 1px;
    background: var(--gray-200);
    margin: 8px 16px;
}

.nav-cta {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white !important;
    padding: 10px 24px !important;
    border-radius: 10px !important;
    font-weight: 600 !important;
    box-shadow: 0 4px 14px rgba(37,99,235,0.3);
    margin-left: 8px;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37,99,235,0.4);
}

/* Mobile Menu */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2.5px;
    background: var(--gray-700);
    border-radius: 2px;
    transition: var(--transition);
}

/* Mobile Dropdown */
.mobile-dropdown-menu {
    display: none;
    padding-left: 16px;
    border-left: 2px solid var(--gray-200);
    margin: 4px 0 4px 16px;
}

.mobile-dropdown-menu.active {
    display: block;
}

.mobile-dropdown-menu li a {
    padding: 8px 16px;
    font-size: 0.9rem;
    color: var(--gray-500);
}

/* ============================================
   Hero Section - Enhanced 3D
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
    overflow: hidden;
    perspective: 1200px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
    transform-style: preserve-3d;
}

.hero-bg::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(37,99,235,0.15), transparent 70%);
    top: -100px;
    right: -100px;
    animation: float3D 8s ease-in-out infinite;
}

.hero-bg::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(245,158,11,0.1), transparent 70%);
    bottom: -50px;
    left: -50px;
    animation: float3D 10s ease-in-out infinite reverse;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 2;
    transform-style: preserve-3d;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(37,99,235,0.15);
    border: 1px solid rgba(37,99,235,0.3);
    color: var(--primary-light);
    padding: 8px 18px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease-out;
}

.hero-badge .pulse {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    color: white;
    line-height: 1.1;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease-out 0.1s both;
}

.hero h1 .highlight {
    background: linear-gradient(135deg, var(--accent), #fbbf24);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.hero h1 .highlight::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent), #fbbf24);
    border-radius: 2px;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--gray-400);
    margin-bottom: 32px;
    max-width: 520px;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-price-card {
    background: linear-gradient(135deg, rgba(255,255,255,0.1), rgba(255,255,255,0.05));
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: var(--radius-xl);
    padding: 32px;
    margin-bottom: 32px;
    animation: fadeInUp 0.8s ease-out 0.3s both;
    position: relative;
    overflow: hidden;
    transform-style: preserve-3d;
    transition: transform 0.5s ease;
}

.hero-price-card:hover {
    transform: translateZ(40px) rotateX(2deg);
}

.hero-price-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--primary));
}

.price-tag {
    display: flex;
    align-items: baseline;
    gap: 8px;
    margin-bottom: 16px;
}

.price-tag .currency {
    font-size: 1.5rem;
    color: var(--gray-400);
    font-weight: 600;
}

.price-tag .amount {
    font-size: 3.5rem;
    font-weight: 800;
    color: white;
    line-height: 1;
}

.price-tag .period {
    font-size: 1rem;
    color: var(--gray-400);
}

.price-features {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.price-features span {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--gray-300);
    background: rgba(255,255,255,0.08);
    padding: 6px 14px;
    border-radius: 50px;
}

.price-features span i {
    color: var(--success);
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    position: relative;
    overflow: hidden;
    transform-style: preserve-3d;
}

.btn:hover {
    transform: translateY(-3px) translateZ(10px);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    box-shadow: 0 4px 14px rgba(37,99,235,0.35);
}

.btn-primary:hover {
    box-shadow: 0 8px 25px rgba(37,99,235,0.45);
}

.btn-accent {
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: white;
    box-shadow: 0 4px 14px rgba(245,158,11,0.35);
}

.btn-accent:hover {
    box-shadow: 0 8px 25px rgba(245,158,11,0.45);
}

.btn-outline {
    background: transparent;
    color: white;
    border: 2px solid rgba(255,255,255,0.3);
}

.btn-outline:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.5);
}

.btn-lg {
    padding: 16px 40px;
    font-size: 1.1rem;
}

/* Hero Right - 3D Visual */
.hero-visual {
    position: relative;
    perspective: 1200px;
    animation: fadeInUp 0.8s ease-out 0.3s both;
}

.hero-3d-card {
    background: linear-gradient(145deg, rgba(255,255,255,0.1), rgba(255,255,255,0.02));
    backdrop-filter: blur(30px);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: var(--radius-xl);
    padding: 40px;
    transform-style: preserve-3d;
    transition: transform 0.5s ease;
    position: relative;
}

.hero-3d-card::before {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    padding: 1px;
    background: linear-gradient(135deg, rgba(37,99,235,0.5), rgba(245,158,11,0.3), transparent 60%);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
}

.hero-3d-card .card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
}

.hero-3d-card .browser-dots {
    display: flex;
    gap: 6px;
}

.hero-3d-card .browser-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.hero-3d-card .browser-dots .dot-red { background: #ef4444; }
.hero-3d-card .browser-dots .dot-yellow { background: #f59e0b; }
.hero-3d-card .browser-dots .dot-green { background: #10b981; }

.hero-3d-card .mockup-content {
    background: rgba(0,0,0,0.3);
    border-radius: var(--radius);
    padding: 20px;
    min-height: 200px;
}

.mockup-nav {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
}

.mockup-nav span {
    height: 8px;
    background: rgba(255,255,255,0.2);
    border-radius: 4px;
}

.mockup-nav span:nth-child(1) { width: 60px; }
.mockup-nav span:nth-child(2) { width: 80px; }
.mockup-nav span:nth-child(3) { width: 50px; }

.mockup-hero {
    height: 80px;
    background: linear-gradient(135deg, rgba(37,99,235,0.3), rgba(245,158,11,0.2));
    border-radius: 8px;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.6);
    font-size: 0.8rem;
}

.mockup-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.mockup-grid .mock-item {
    height: 60px;
    background: rgba(255,255,255,0.08);
    border-radius: 8px;
}

/* Floating elements - 3D */
.float-element {
    position: absolute;
    background: rgba(255,255,255,0.08);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 12px;
    padding: 12px 18px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: white;
    font-size: 0.85rem;
    font-weight: 500;
    animation: floatElement 6s ease-in-out infinite;
    z-index: 10;
    transform-style: preserve-3d;
}

.float-element i {
    font-size: 1.2rem;
}

.float-element.pos-1 {
    top: 10%;
    right: -20px;
    animation-delay: 0s;
}

.float-element.pos-2 {
    bottom: 20%;
    right: -40px;
    animation-delay: 2s;
}

.float-element.pos-3 {
    top: 50%;
    left: -30px;
    animation-delay: 4s;
}

@keyframes floatElement {
    0%, 100% { transform: translateY(0) rotate(0deg) translateZ(0); }
    50% { transform: translateY(-15px) rotate(2deg) translateZ(20px); }
}

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

/* ============================================
   Section Styles
   ============================================ */
.section {
    padding: 100px 0;
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(37,99,235,0.1);
    color: var(--primary);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 16px;
    line-height: 1.2;
}

.section-desc {
    font-size: 1.1rem;
    color: var(--gray-500);
}

/* ============================================
   Business Cards (双业务卡片) - 3D Enhanced
   ============================================ */
.business-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.business-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 48px;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: var(--transition-slow);
    border: 1px solid var(--gray-200);
    transform-style: preserve-3d;
}

.business-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s ease;
}

.business-card:hover::before {
    transform: scaleX(1);
}

.business-card:hover {
    transform: translateY(-8px) translateZ(30px);
    box-shadow: var(--shadow-3d);
}

.business-card .card-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin-bottom: 24px;
    transition: transform 0.3s ease;
}

.business-card:hover .card-icon {
    transform: translateZ(20px) scale(1.1);
}

.business-card.new .card-icon {
    background: linear-gradient(135deg, rgba(37,99,235,0.15), rgba(37,99,235,0.05));
    color: var(--primary);
}

.business-card.redesign .card-icon {
    background: linear-gradient(135deg, rgba(245,158,11,0.15), rgba(245,158,11,0.05));
    color: var(--accent);
}

.business-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--gray-900);
}

.business-card p {
    color: var(--gray-500);
    margin-bottom: 24px;
    line-height: 1.7;
}

.business-card .features {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 28px;
}

.business-card .features span {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    color: var(--gray-600);
}

.business-card .features span i {
    color: var(--success);
    font-size: 1rem;
}

/* ============================================
   Package Details (套餐详情)
   ============================================ */
.package-section {
    background: linear-gradient(180deg, var(--gray-100) 0%, white 50%, var(--gray-100) 100%);
}

.package-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.package-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 36px;
    border: 1px solid var(--gray-200);
    transition: var(--transition-slow);
    position: relative;
    overflow: hidden;
    transform-style: preserve-3d;
}

.package-card.featured {
    border: 2px solid var(--primary);
    transform: scale(1.02);
    box-shadow: 0 0 40px rgba(37,99,235,0.1);
}

.package-card.featured::before {
    content: '推荐';
    position: absolute;
    top: 16px;
    right: -35px;
    background: var(--primary);
    color: white;
    padding: 4px 40px;
    font-size: 0.75rem;
    font-weight: 600;
    transform: rotate(45deg);
}

.package-card:hover {
    transform: translateY(-6px) translateZ(20px);
    box-shadow: var(--shadow-xl);
}

.package-card.featured:hover {
    transform: translateY(-6px) scale(1.02) translateZ(20px);
}

.package-card .pkg-name {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.package-card .pkg-price {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 4px;
}

.package-card .pkg-price span {
    font-size: 1rem;
    color: var(--gray-400);
    font-weight: 500;
}

.package-card .pkg-period {
    color: var(--gray-400);
    font-size: 0.9rem;
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--gray-200);
}

.package-card .pkg-features {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 28px;
}

.package-card .pkg-features li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.95rem;
    color: var(--gray-600);
}

.package-card .pkg-features li i {
    color: var(--success);
    margin-top: 3px;
    flex-shrink: 0;
}

.package-card .pkg-features li.missing {
    color: var(--gray-400);
}

.package-card .pkg-features li.missing i {
    color: var(--gray-300);
}

/* Feature Grid (功能清单) */
.feature-grid-section {
    background: var(--dark);
    color: white;
}

.feature-grid-section .section-title,
.feature-grid-section .section-desc {
    color: white;
}

.feature-grid-section .section-desc {
    opacity: 0.7;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
}

.feature-item {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: var(--transition);
    transform-style: preserve-3d;
}

.feature-item:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(37,99,235,0.3);
    transform: translateY(-3px) translateZ(15px);
}

.feature-item i {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: rgba(37,99,235,0.2);
    color: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.feature-item span {
    font-size: 0.95rem;
    font-weight: 500;
}

/* ============================================
   Portfolio / Client Cases (合作客户案例)
   ============================================ */
.template-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 28px;
}

.template-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition-slow);
    border: 1px solid var(--gray-200);
    position: relative;
    transform-style: preserve-3d;
}

.template-card:hover {
    transform: translateY(-10px) rotateX(5deg) translateZ(30px);
    box-shadow: var(--shadow-3d);
}

.template-card .template-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.template-card .template-info {
    padding: 24px;
}

.template-card .template-tag {
    display: inline-block;
    background: rgba(37,99,235,0.1);
    color: var(--primary);
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.template-card h4 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.template-card p {
    font-size: 0.9rem;
    color: var(--gray-500);
    margin-bottom: 16px;
}

.template-card .template-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--primary);
    font-weight: 600;
    font-size: 0.9rem;
    transition: gap 0.3s ease;
}

.template-card:hover .template-link {
    gap: 10px;
}

/* Client case specific styles */
.client-case .client-logo {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1.2rem;
    margin-bottom: 12px;
}

.client-case .client-meta {
    display: flex;
    gap: 12px;
    margin-top: 12px;
    flex-wrap: wrap;
}

.client-case .client-meta span {
    font-size: 0.8rem;
    color: var(--gray-400);
    display: flex;
    align-items: center;
    gap: 4px;
}

/* ============================================
   Comparison Table (优势对比)
   ============================================ */
.comparison-section {
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark-light) 100%);
    color: white;
}

.comparison-section .section-title,
.comparison-section .section-desc {
    color: white;
}

.comparison-table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 700px;
}

.comparison-table th,
.comparison-table td {
    padding: 18px 24px;
    text-align: left;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.comparison-table th {
    font-weight: 700;
    font-size: 1rem;
    background: rgba(255,255,255,0.05);
}

.comparison-table th:first-child {
    border-radius: var(--radius-lg) 0 0 0;
}

.comparison-table th:last-child {
    border-radius: 0 var(--radius-lg) 0 0;
}

.comparison-table td {
    font-size: 0.95rem;
}

.comparison-table .feature-name {
    font-weight: 600;
    color: rgba(255,255,255,0.9);
}

.comparison-table .check-yes {
    color: var(--success);
    font-size: 1.2rem;
}

.comparison-table .check-no {
    color: var(--danger);
    font-size: 1.2rem;
}

.comparison-table .us-col {
    background: rgba(37,99,235,0.1);
    font-weight: 600;
    color: var(--primary-light);
}

.comparison-table tr:hover td {
    background: rgba(255,255,255,0.03);
}

/* ============================================
   Value Points (5个价值点)
   ============================================ */
.value-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
}

.value-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    text-align: center;
    border: 1px solid var(--gray-200);
    transition: var(--transition-slow);
    position: relative;
    overflow: hidden;
    transform-style: preserve-3d;
}

.value-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transition: transform 0.5s ease;
}

.value-card:hover::after {
    transform: scaleX(1);
}

.value-card:hover {
    transform: translateY(-8px) translateZ(25px);
    box-shadow: var(--shadow-xl);
}

.value-card .value-icon {
    width: 72px;
    height: 72px;
    border-radius: 20px;
    background: linear-gradient(135deg, rgba(37,99,235,0.1), rgba(245,158,11,0.1));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2rem;
    transition: transform 0.3s ease;
}

.value-card:hover .value-icon {
    transform: scale(1.1) rotate(5deg) translateZ(15px);
}

.value-card h4 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 10px;
}

.value-card p {
    font-size: 0.9rem;
    color: var(--gray-500);
    line-height: 1.6;
}

/* ============================================
   Trust Badges (信任凭证)
   ============================================ */
.trust-section {
    background: linear-gradient(180deg, white, var(--gray-100));
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.trust-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 32px;
    display: flex;
    align-items: flex-start;
    gap: 16px;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
    transform-style: preserve-3d;
}

.trust-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px) translateZ(15px);
}

.trust-card .trust-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    flex-shrink: 0;
}

.trust-card .trust-content h4 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 6px;
}

.trust-card .trust-content p {
    font-size: 0.9rem;
    color: var(--gray-500);
    line-height: 1.5;
}

/* Stats Bar */
.stats-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    margin-top: 60px;
    padding: 40px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: var(--radius-xl);
    color: white;
    transform-style: preserve-3d;
    transition: transform 0.5s ease;
}

.stats-bar:hover {
    transform: translateZ(20px);
}

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

.stat-item .stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 8px;
}

.stat-item .stat-label {
    font-size: 0.95rem;
    opacity: 0.8;
}

/* ============================================
   CTA Section
   ============================================ */
.cta-section {
    background: linear-gradient(135deg, var(--dark) 0%, #1a1a2e 100%);
    position: relative;
    overflow: hidden;
    perspective: 1000px;
}

.cta-section::before {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(37,99,235,0.15), transparent 70%);
    top: -100px;
    left: -100px;
    animation: float3D 12s ease-in-out infinite;
}

.cta-section::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(245,158,11,0.1), transparent 70%);
    bottom: -100px;
    right: -100px;
    animation: float3D 15s ease-in-out infinite reverse;
}

.cta-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    color: white;
    margin-bottom: 20px;
}

.cta-content p {
    font-size: 1.15rem;
    color: var(--gray-400);
    margin-bottom: 40px;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.cta-guarantee {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
    color: var(--gray-400);
    font-size: 0.9rem;
}

.cta-guarantee span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.cta-guarantee i {
    color: var(--success);
}

/* Contact Methods */
.contact-methods {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 32px;
}

.contact-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    border: 2px solid transparent;
    transform-style: preserve-3d;
}

.contact-btn:hover {
    transform: translateY(-3px) translateZ(10px);
}

.contact-btn.whatsapp {
    background: #25d366;
    color: white;
}

.contact-btn.whatsapp:hover {
    background: #128c7e;
}

.contact-btn.wechat {
    background: #07c160;
    color: white;
}

.contact-btn.wechat:hover {
    background: #06ad56;
}

.contact-btn.phone {
    background: transparent;
    color: white;
    border-color: rgba(255,255,255,0.3);
}

.contact-btn.phone:hover {
    background: rgba(255,255,255,0.1);
}

/* ============================================
   Redesign Section (改版专项)
   ============================================ */
.redesign-section {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 50%, #fef3c7 100%);
}

.redesign-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 48px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(245,158,11,0.2);
    transform-style: preserve-3d;
    transition: transform 0.5s ease;
}

.redesign-card:hover {
    transform: translateZ(20px);
}

.redesign-content .section-label {
    background: rgba(245,158,11,0.15);
    color: var(--accent-dark);
}

.redesign-content h2 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 16px;
}

.redesign-content p {
    color: var(--gray-600);
    margin-bottom: 24px;
    line-height: 1.7;
}

.redesign-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-bottom: 32px;
}

.redesign-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1rem;
    color: var(--gray-700);
}

.redesign-list li i {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--accent);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    flex-shrink: 0;
}

.redesign-visual {
    position: relative;
    perspective: 1000px;
}

.redesign-visual .before-after {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-3d);
    transform: rotateY(-5deg);
    transition: transform 0.5s ease;
}

.redesign-visual:hover .before-after {
    transform: rotateY(0deg) translateZ(20px);
}

.redesign-visual img {
    width: 100%;
    height: 300px;
    object-fit: cover;
}

.redesign-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--accent);
    color: white;
    padding: 8px 16px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 0.85rem;
    box-shadow: var(--shadow);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--dark);
    color: white;
    padding: 80px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand .logo {
    margin-bottom: 20px;
}

.footer-brand p {
    color: var(--gray-400);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 20px;
}

.footer-brand .social-links {
    display: flex;
    gap: 12px;
}

.footer-brand .social-links a {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: rgba(255,255,255,0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-400);
    transition: var(--transition);
    transform-style: preserve-3d;
}

.footer-brand .social-links a:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-3px) translateZ(10px);
}

.footer-col h4 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: white;
}

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

.footer-col ul li a {
    color: var(--gray-400);
    font-size: 0.95rem;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-col ul li a:hover {
    color: var(--primary-light);
    padding-left: 4px;
}

.footer-col ul li a i {
    font-size: 0.7rem;
    color: var(--primary);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-bottom p {
    color: var(--gray-500);
    font-size: 0.9rem;
}

.footer-bottom .footer-links {
    display: flex;
    gap: 24px;
}

.footer-bottom .footer-links a {
    color: var(--gray-500);
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-bottom .footer-links a:hover {
    color: var(--primary-light);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-visual {
        display: none;
    }

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

    .redesign-card {
        grid-template-columns: 1fr;
    }

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

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

    .dropdown-menu {
        display: none !important;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 20px;
        gap: 4px;
        box-shadow: var(--shadow-lg);
        border-top: 1px solid var(--gray-200);
        max-height: calc(100vh - 72px);
        overflow-y: auto;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-item {
        width: 100%;
    }

    .nav-item > a {
        width: 100%;
        padding: 12px 16px;
    }

    .nav-item.dropdown > a::after {
        margin-left: auto;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero {
        padding: 100px 0 60px;
    }

    .section {
        padding: 60px 0;
    }

    .price-tag .amount {
        font-size: 2.5rem;
    }

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

    .stats-bar {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .comparison-table-wrapper {
        margin: 0 -24px;
        border-radius: 0;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero-price-card {
        padding: 24px;
    }

    .business-card {
        padding: 32px 24px;
    }

    .package-card {
        padding: 28px 20px;
    }

    .btn-lg {
        padding: 14px 28px;
        font-size: 1rem;
    }
}

/* ============================================
   Animation Utilities
   ============================================ */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--gray-400);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-500);
}

/* Selection */
::selection {
    background: rgba(37,99,235,0.2);
    color: var(--primary-dark);
}

/* Modal Styles */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    padding: 20px;
}

.modal-content {
    background: white;
    border-radius: 20px;
    padding: 40px;
    max-width: 400px;
    width: 100%;
    text-align: center;
    position: relative;
    animation: modalIn 0.3s ease;
    transform-style: preserve-3d;
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 20px;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--gray-400);
    transition: color 0.3s ease;
}

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

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.9) translateY(20px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

/* QR Code placeholder styling */
.qr-placeholder {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, var(--gray-100), var(--gray-200));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 20px auto;
    border: 2px dashed var(--gray-300);
    color: var(--gray-400);
    font-size: 0.9rem;
}


        .lang-nav-item {
            position: relative;
            list-style: none;
        }
        .lang-switcher-wrapper {
            position: relative;
            z-index: 1001;
        }
        .lang-switcher-btn {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 16px;
            background: rgba(0,0,0,0.35);
            border: 1.5px solid rgba(255,255,255,0.45);
            border-radius: 10px;
            color: #ffffff;
            font-size: 0.9rem;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.3s ease;
            user-select: none;
            text-shadow: 0 1px 2px rgba(0,0,0,0.3);
            box-shadow: 0 2px 8px rgba(0,0,0,0.15);
        }
        .lang-switcher-btn:hover {
            background: rgba(0,0,0,0.5);
            border-color: rgba(255,255,255,0.65);
            box-shadow: 0 4px 12px rgba(0,0,0,0.25);
            transform: translateY(-1px);
        }
        .lang-switcher-btn i.fa-globe {
            font-size: 1.1rem;
            color: #60a5fa;
        }
        .lang-switcher-btn i.fa-chevron-down {
            font-size: 0.65rem;
            color: rgba(255,255,255,0.7);
        }
        .lang-dropdown {
            position: absolute;
            top: calc(100% + 12px);
            right: 0;
            background: #ffffff;
            border-radius: 14px;
            box-shadow: 0 12px 48px rgba(0,0,0,0.18);
            min-width: 200px;
            padding: 10px 0;
            opacity: 0;
            visibility: hidden;
            transform: translateY(-10px);
            transition: all 0.3s ease;
            z-index: 1002;
            border: 1px solid rgba(0,0,0,0.06);
        }
        .lang-dropdown.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .lang-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 18px;
            cursor: pointer;
            transition: all 0.2s;
            color: #1f2937;
            font-size: 0.95rem;
            font-weight: 500;
        }
        .lang-item:hover {
            background: #f0f4ff;
            color: #4f46e5;
        }
        .lang-item.active {
            background: #eef2ff;
            color: #4f46e5;
            font-weight: 600;
        }
        .lang-item.active .lang-flag {
            transform: scale(1.1);
        }
        .lang-flag {
            font-size: 1.2rem;
            transition: transform 0.2s;
        }
        .lang-name {
            flex: 1;
        }
        /* 隐藏 translate.js 默认的语言选择器 */
        #translate {
            display: none !important;
        }
        /* 移动端适配 */
        @media (max-width: 768px) {
            .lang-switcher-btn {
                padding: 8px 12px;
                font-size: 0.85rem;
            }
            .lang-switcher-btn span {
                display: none;
            }
            .lang-dropdown {
                min-width: 170px;
                right: -10px;
            }
        }