/* ========================================
   律商风险中国官网 - 样式表
   Design: 科技创新风 + 互联网B2B风
   ======================================== */

/* ========================================
   CSS Variables - Design System
   ======================================== */
:root {
    /* Colors - 科技红色 */
    --color-primary: #C8102E;
    --color-primary-dark: #A00D24;
    --color-primary-light: #E8384F;
    --color-primary-lighter: #ffe5e5;

    /* Colors - 辅助色 */
    --color-success: #10B981;
    --color-warning: #F59E0B;
    --color-danger: #EF4444;
    --color-brand-red: #C8102E;

    /* Colors - 中性色 */
    --color-gray-900: #111827;
    --color-gray-800: #1F2937;
    --color-gray-700: #374151;
    --color-gray-600: #4B5563;
    --color-gray-500: #6B7280;
    --color-gray-400: #9CA3AF;
    --color-gray-300: #D1D5DB;
    --color-gray-200: #E5E7EB;
    --color-gray-100: #F3F4F6;
    --color-gray-50: #F9FAFB;
    --color-white: #FFFFFF;

    /* Gradients - 红色科技风格 */
    --gradient-primary: linear-gradient(135deg, #C8102E 0%, #A00D24 100%);
    --gradient-tech: linear-gradient(135deg, #E8384F 0%, #C8102E 100%);
    --gradient-hero: linear-gradient(135deg, rgba(26, 10, 16, 0.95) 0%, rgba(237, 28, 36, 0.85) 100%);

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --spacing-3xl: 64px;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-full: 50%;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);

    /* Typography */
    --font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;

    /* Layout */
    --container-max-width: 1200px;
    --header-height: 64px;
}

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

html {
    scroll-behavior: smooth;
}

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

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-gray-900);
}

h1 { font-size: 48px; }
h2 { font-size: 36px; }
h3 { font-size: 30px; }
h4 { font-size: 24px; }
h5 { font-size: 20px; }
h6 { font-size: 16px; }

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

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

/* ========================================
   Container & Layout
   ======================================== */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section {
    padding: var(--spacing-3xl) 0;
}

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

.section-primary {
    position: relative;
    background: url('cta-bg.jpg') center center / cover no-repeat;
    color: var(--color-white);
}

.section-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.65) 0%, rgba(30, 58, 138, 0.55) 100%);
    z-index: 1;
}

.section-primary .container {
    position: relative;
    z-index: 2;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-header.with-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--color-gray-900);
}

.section-subtitle {
    font-size: 18px;
    color: var(--color-gray-600);
}

/* ========================================
   Header & Navigation
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: box-shadow 0.3s ease;
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 20px;
    font-weight: 700;
    color: var(--color-primary);
}

.logo img {
    height: 32px;
    width: auto;
}

.logo-text {
    margin-left: 12px;
    padding-left: 12px;
    font-size: 16px;
    font-weight: 600;
    color: var(--color-gray-700);
    white-space: nowrap;
    border-left: 1px solid var(--color-gray-400);
    line-height: 1;
}

.home-header .logo-text {
    margin-left: 18px;
    padding-left: 18px;
    color: rgba(255, 255, 255, 0.85);
    border-left-color: rgba(255, 255, 255, 0.4);
}

/* Desktop Navigation */
.nav-desktop {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-link {
    color: var(--color-gray-700);
    font-size: 22px;
    font-weight: 500;
    padding: var(--spacing-sm) 0;
    position: relative;
    transition: color 0.3s ease;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

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

/* Dropdown */
.nav-dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    min-width: 160px;
    background: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-sm) 0;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.nav-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.dropdown-menu a {
    display: block;
    padding: var(--spacing-sm) var(--spacing-lg);
    color: var(--color-gray-700);
    font-size: 20px;
    white-space: nowrap;
}

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

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

.lang-switch {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 14px;
}

.lang-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 14px;
    color: var(--color-gray-600);
    transition: color 0.3s ease;
}

.lang-btn.active {
    color: var(--color-primary);
    font-weight: 600;
}

.lang-btn:hover {
    color: var(--color-primary);
}

.search-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-gray-600);
    border-radius: var(--radius-sm);
    transition: all 0.3s ease;
}

.search-btn:hover {
    background-color: var(--color-gray-100);
    color: var(--color-primary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 12px 24px;
    font-size: 16px;
    font-weight: 500;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, #C8102E 0%, #A00D24 100%);
    color: var(--color-white);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(200, 16, 46, 0.4);
}

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

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

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

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

.btn-white-outline {
    background: transparent;
    color: var(--color-white);
    border: 2px solid var(--color-white);
}

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

.btn-large {
    padding: 14px 32px;
    font-size: 18px;
}

.full-width {
    width: 100%;
}

/* Mobile Toggle */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.mobile-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--color-gray-700);
    transition: all 0.3s ease;
}

/* ========================================
   Mobile Navigation
   ======================================== */
.mobile-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    max-width: 400px;
    height: 100vh;
    background: var(--color-white);
    z-index: 1100;
    transition: right 0.3s ease;
}

.mobile-nav.active {
    right: 0;
}

.mobile-nav-inner {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: var(--spacing-lg);
}

.mobile-close {
    align-self: flex-end;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    cursor: pointer;
    margin-bottom: var(--spacing-lg);
}

.mobile-nav-menu {
    flex: 1;
    overflow-y: auto;
}

.mobile-nav-link {
    display: block;
    padding: var(--spacing-md) 0;
    font-size: 18px;
    font-weight: 500;
    color: var(--color-gray-900);
    border-bottom: 1px solid var(--color-gray-100);
}

.mobile-nav-sub {
    padding-left: var(--spacing-lg);
    display: none;
}

.mobile-nav-group.expanded .mobile-nav-sub {
    display: block;
}

.mobile-nav-sub a {
    display: block;
    padding: var(--spacing-sm) 0;
    font-size: 16px;
    color: var(--color-gray-600);
}

.mobile-nav-footer {
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-200);
}

/* Overlay */
.nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1050;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* ========================================
   Hero Section (非首页)
   ======================================== */
.hero {
    position: relative;
    height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--color-white);
    overflow: hidden;
    margin-top: var(--header-height);
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-hero);
}

.hero-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.85) 0%, rgba(59, 130, 246, 0.8) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    padding: var(--spacing-lg);
}

.hero-title {
    font-size: 56px;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 24px;
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ========================================
   Page Header - 科技感Banner
   ======================================== */
.page-header {
    position: relative;
    background: linear-gradient(135deg, #0a0f19 0%, #1a1f29 50%, #0f1520 100%);
    color: var(--color-white);
    padding: calc(var(--spacing-3xl) + var(--header-height)) 0 var(--spacing-3xl);
    margin-top: var(--header-height);
    overflow: hidden;
}

/* 视频背景 */
.page-header-video {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    transform: translate(-50%, -50%);
    object-fit: cover;
    z-index: 0;
}

/* 图片背景 */
.page-header-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-size: cover;
    background-position: center;
    z-index: 0;
}

/* 图片遮罩层 */
.page-header-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.6) 0%, rgba(30, 41, 59, 0.5) 50%, rgba(15, 23, 42, 0.6) 100%);
    z-index: 1;
}

/* 科技感背景层 */
.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 80%, rgba(200, 16, 46, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(200, 16, 46, 0.1) 0%, transparent 40%);
    z-index: 1;
    pointer-events: none;
}

/* 科技网格背景 */
.page-header::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    z-index: 2;
    animation: headerGridMove 30s linear infinite;
    pointer-events: none;
}

@keyframes headerGridMove {
    0% { background-position: 0 0; }
    100% { background-position: 60px 60px; }
}

/* 科技线条SVG */
.page-header-tech {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 4;
    pointer-events: none;
    overflow: hidden;
}

.tech-line-header {
    stroke: rgba(237, 28, 36, 0.2);
    stroke-width: 1;
    fill: none;
    stroke-dasharray: 80, 160;
    animation: headerLineFlow 10s linear infinite;
}

.tech-line-header:nth-child(2) { animation-delay: -2.5s; stroke: rgba(237, 28, 36, 0.15); }
.tech-line-header:nth-child(3) { animation-delay: -5s; stroke: rgba(255, 255, 255, 0.08); }
.tech-line-header:nth-child(4) { animation-delay: -7.5s; stroke: rgba(237, 28, 36, 0.12); }

@keyframes headerLineFlow {
    0% { stroke-dashoffset: 240; }
    100% { stroke-dashoffset: 0; }
}

/* 科技节点 */
.tech-node-header {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(237, 28, 36, 0.8);
    border-radius: 50%;
    box-shadow: 0 0 8px rgba(237, 28, 36, 0.5);
    animation: headerNodePulse 2.5s ease-in-out infinite;
}

.tech-node-header::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 16px;
    height: 16px;
    transform: translate(-50%, -50%);
    border: 1px solid rgba(237, 28, 36, 0.25);
    border-radius: 50%;
    animation: headerNodeRipple 2.5s ease-out infinite;
}

.tech-node-header:nth-child(1) { top: 20%; left: 15%; animation-delay: 0s; }
.tech-node-header:nth-child(2) { top: 30%; right: 20%; animation-delay: 0.4s; }
.tech-node-header:nth-child(3) { bottom: 25%; left: 10%; animation-delay: 0.8s; }
.tech-node-header:nth-child(4) { bottom: 35%; right: 15%; animation-delay: 1.2s; }
.tech-node-header:nth-child(5) { top: 50%; left: 5%; animation-delay: 1.6s; }
.tech-node-header:nth-child(6) { top: 40%; right: 8%; animation-delay: 2s; }

@keyframes headerNodePulse {
    0%, 100% { opacity: 0.4; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.3); }
}

@keyframes headerNodeRipple {
    0% { transform: translate(-50%, -50%) scale(1); opacity: 0.4; }
    100% { transform: translate(-50%, -50%) scale(2); opacity: 0; }
}

/* 数据粒子 */
.data-particle-header {
    position: absolute;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    animation: headerParticleFloat 12s linear infinite;
}

.data-particle-header:nth-child(1) { width: 3px; height: 3px; left: 12%; animation-delay: 0s; }
.data-particle-header:nth-child(2) { width: 2px; height: 2px; left: 28%; animation-delay: 2s; }
.data-particle-header:nth-child(3) { width: 4px; height: 4px; left: 45%; animation-delay: 4s; }
.data-particle-header:nth-child(4) { width: 3px; height: 3px; left: 62%; animation-delay: 6s; }
.data-particle-header:nth-child(5) { width: 2px; height: 2px; left: 78%; animation-delay: 8s; }
.data-particle-header:nth-child(6) { width: 3px; height: 3px; left: 92%; animation-delay: 10s; }

@keyframes headerParticleFloat {
    0% { top: 100%; opacity: 0; transform: translateX(0); }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { top: -5%; opacity: 0; transform: translateX(20px); }
}

/* 流动光线 */
.flowing-line-header {
    position: absolute;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(237, 28, 36, 0.5), transparent);
    animation: headerFlowMove 6s linear infinite;
}

.flowing-line-header:nth-child(1) { top: 25%; animation-delay: 0s; }
.flowing-line-header:nth-child(2) { top: 50%; animation-delay: 2s; }
.flowing-line-header:nth-child(3) { top: 75%; animation-delay: 4s; }

@keyframes headerFlowMove {
    0% { left: -80%; width: 40%; opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { left: 100%; width: 40%; opacity: 0; }
}

/* 汽车元素 - 风控雷达线条 */
.car-radar-lines {
    position: absolute;
    top: 50%;
    right: -50px;
    transform: translateY(-50%);
    width: 200px;
    height: 200px;
    z-index: 3;
    pointer-events: none;
}

.car-radar-line {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 150px;
    height: 1px;
    background: linear-gradient(90deg, rgba(237, 28, 36, 0.4), transparent);
    transform-origin: left center;
    animation: radarSweep 4s ease-in-out infinite;
}

.car-radar-line:nth-child(1) { transform: rotate(0deg); animation-delay: 0s; }
.car-radar-line:nth-child(2) { transform: rotate(30deg); animation-delay: 0.33s; }
.car-radar-line:nth-child(3) { transform: rotate(60deg); animation-delay: 0.66s; }
.car-radar-line:nth-child(4) { transform: rotate(90deg); animation-delay: 1s; }
.car-radar-line:nth-child(5) { transform: rotate(120deg); animation-delay: 1.33s; }
.car-radar-line:nth-child(6) { transform: rotate(150deg); animation-delay: 1.66s; }

@keyframes radarSweep {
    0%, 100% { opacity: 0; }
    50% { opacity: 1; }
}

/* 六边形装饰 */
.hexagon-header {
    position: absolute;
    width: 50px;
    height: 50px;
    opacity: 0.08;
    animation: hexRotateHeader 25s linear infinite;
}

.hexagon-header:nth-child(1) { top: 15%; left: 8%; }
.hexagon-header:nth-child(2) { top: 25%; right: 12%; animation-direction: reverse; }
.hexagon-header:nth-child(3) { bottom: 20%; left: 5%; animation-duration: 30s; }
.hexagon-header:nth-child(4) { bottom: 30%; right: 8%; animation-direction: reverse; }

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

.page-header .container {
    position: relative;
    z-index: 10;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    font-size: 14px;
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.8);
}

.breadcrumb .separator {
    color: rgba(255, 255, 255, 0.5);
}

.breadcrumb .current {
    color: var(--color-white);
}

.page-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--color-white);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.page-subtitle {
    font-size: 20px;
    opacity: 0.9;
}

/* ========================================
   Service Sectors - 服务领域三栏模块
   ======================================== */
.service-sectors {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-white);
}

.service-sectors-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 60px;
    max-width: 1000px;
    margin: 0 auto;
}

.service-sector-item {
    text-align: center;
    padding: var(--spacing-lg);
    transition: all 0.3s ease;
    text-decoration: none;
    display: block;
}

.service-sector-item:hover {
    transform: translateY(-4px);
}

.service-sector-item:hover .service-sector-title {
    color: var(--color-brand-red);
}

.service-sector-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-sector-icon svg {
    width: 100%;
    height: 100%;
}

.service-sector-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-brand-red);
    margin-bottom: var(--spacing-sm);
    transition: color 0.3s ease;
}

.service-sector-desc {
    font-size: 14px;
    color: var(--color-gray-700);
    line-height: 1.6;
    margin: 0;
}

/* ========================================
   Solution Cards - 首页
   ======================================== */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--spacing-md);
}

.solution-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

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

.solution-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.solution-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-gray-900);
}

.solution-desc {
    font-size: 14px;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-md);
    flex: 1;
}

.solution-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-primary);
    font-weight: 500;
    font-size: 14px;
}

/* ========================================
   Stats Grid
   ======================================== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.stat-card {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
}

.stat-value {
    font-size: 42px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: var(--spacing-sm);
    white-space: nowrap;
}

.stat-label {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-xs);
}

.stat-desc {
    font-size: 14px;
    color: var(--color-gray-600);
}

/* ========================================
   Advantages Grid
   ======================================== */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.advantage-card {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-lg);
    background: var(--color-white);
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-gray-100);
}

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

.advantage-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.advantage-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.advantage-desc {
    font-size: 14px;
    color: var(--color-gray-600);
}

/* ========================================
   News List - 首页
   ======================================== */
.news-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.news-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
}

.news-item:hover {
    background: var(--color-white);
    box-shadow: var(--shadow-md);
}

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

.news-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-gray-900);
}

.news-excerpt {
    font-size: 14px;
    color: var(--color-gray-600);
}

/* ========================================
   CTA Section
   ======================================== */
.cta-section {
    text-align: center;
    padding: var(--spacing-3xl) 0;
}

.cta-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: #ffffff;
}

.cta-desc {
    font-size: 18px;
    margin-bottom: var(--spacing-xl);
    color: #ffffff;
    opacity: 0.95;
}

.cta-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ========================================
   Filter Tabs
   ======================================== */
.filter-tabs {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-xl);
}

.filter-tab {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--color-white);
    border: 2px solid var(--color-gray-200);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-tab:hover,
.filter-tab.active {
    border-color: var(--color-primary);
    background: var(--color-primary);
    color: var(--color-white);
}

/* ========================================
   Solution Detail Cards
   ======================================== */
.solutions-detail-grid {
    display: grid;
    gap: var(--spacing-3xl);
    align-items: stretch;
}

.solution-detail-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: stretch;
}

.solution-detail-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    aspect-ratio: 4 / 3;
}

.solution-detail-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.solution-detail-content {
    padding: var(--spacing-lg);
}

.solution-tag {
    display: inline-block;
    padding: 4px 12px;
    background: var(--gradient-primary);
    color: var(--color-white);
    font-size: 12px;
    font-weight: 600;
    border-radius: 50px;
    margin-bottom: var(--spacing-md);
}

.solution-detail-title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.solution-detail-desc {
    font-size: 16px;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-lg);
}

.solution-detail-features {
    list-style: none;
    margin-bottom: var(--spacing-lg);
}

.solution-detail-features li {
    padding: var(--spacing-sm) 0;
    padding-left: 24px;
    position: relative;
    color: var(--color-gray-700);
}

.solution-detail-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 50%;
}

/* ========================================
   CTA Box
   ======================================== */
.cta-box {
    text-align: center;
    padding: var(--spacing-3xl);
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    color: var(--color-white);
}

.cta-box-title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.cta-box-desc {
    font-size: 16px;
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
}

/* ========================================
   About Page
   ======================================== */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

.about-text h2 {
    margin-bottom: var(--spacing-md);
}

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

.timeline {
    margin: var(--spacing-xl) 0;
}

.timeline h3 {
    font-size: 20px;
    margin-bottom: var(--spacing-md);
}

.timeline-items {
    display: flex;
    gap: var(--spacing-md);
}

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

.timeline-year {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.timeline-content {
    font-size: 14px;
    color: var(--color-gray-600);
}

.market-position {
    margin-top: var(--spacing-xl);
}

.market-position h3 {
    font-size: 20px;
    margin-bottom: var(--spacing-md);
}

.market-position ul {
    list-style: none;
}

.market-position li {
    padding: var(--spacing-sm) 0;
    padding-left: 24px;
    position: relative;
}

.market-position li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: bold;
}

.about-image {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.about-stat {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
}

.stat-number {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-primary);
}

.stat-text {
    font-size: 12px;
    color: var(--color-gray-600);
}

/* Tech Cards */
.tech-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.tech-card {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.tech-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-md);
}

.tech-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.tech-desc {
    font-size: 14px;
    color: var(--color-gray-600);
}

.tech-cta {
    text-align: center;
}

/* Partners */
.partners-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.partner-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 80px;
    background: var(--color-white);
    border-radius: var(--radius-md);
    font-weight: 600;
    color: var(--color-gray-400);
    border: 2px dashed var(--color-gray-200);
}

/* Culture */
.culture-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.culture-card {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--color-white);
    border-radius: var(--radius-md);
}

.culture-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-md);
}

.culture-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.culture-desc {
    color: var(--color-gray-600);
}

.values-section {
    text-align: center;
}

.values-title {
    font-size: 20px;
    margin-bottom: var(--spacing-md);
}

.values-list {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.value-tag {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--gradient-primary);
    color: var(--color-white);
    border-radius: 50px;
    font-weight: 500;
}

/* Join Us */
.join-us-box {
    text-align: center;
    padding: var(--spacing-3xl);
    background: var(--color-gray-50);
    border-radius: var(--radius-lg);
}

.join-us-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.join-us-desc {
    font-size: 16px;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-xl);
}

.join-us-benefits {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
}

.benefit-item {
    padding: var(--spacing-md);
    background: var(--color-white);
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--color-gray-700);
}

/* ========================================
   News Page
   ======================================== */
.search-box {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    max-width: 400px;
    margin: var(--spacing-xl) auto 0;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-white);
    border: 1px solid var(--color-gray-300);
    border-radius: 50px;
}

.search-box input {
    flex: 1;
    border: none;
    outline: none;
    font-size: 14px;
}

/* ========================================
   News Center Layout (DeltaEntropy Style)
   ======================================== */

/* News Center - Left/Right Layout */
.news-center-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

/* Left: Carousel */
.news-left {
    position: relative;
}

.news-carousel {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--color-gray-100);
}

.carousel-track {
    position: relative;
    height: 535px;
}

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.8s ease;
}

.carousel-slide.active {
    opacity: 1;
    z-index: 1;
}

.carousel-slide-link {
    display: block;
    width: 100%;
    height: 100%;
    position: relative;
    text-decoration: none;
    color: var(--color-white);
}

.carousel-slide-link img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.carousel-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-xl) var(--spacing-xl) var(--spacing-2xl);
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.75));
}

.carousel-overlay-content {
    position: relative;
    z-index: 2;
}

.carousel-title {
    font-size: 20px;
    font-weight: 700;
    line-height: 1.5;
    margin-bottom: var(--spacing-sm);
    color: var(--color-white);
}

.carousel-desc {
    font-size: 14px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.85);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Carousel Indicators */
.carousel-indicators {
    position: absolute;
    bottom: 20px;
    right: var(--spacing-xl);
    display: flex;
    gap: 8px;
    z-index: 10;
}

.indicator {
    width: 24px;
    height: 4px;
    background: rgba(255, 255, 255, 0.4);
    border-radius: 2px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.indicator.active {
    width: 36px;
    background: var(--color-white);
}

.indicator:hover {
    background: rgba(255, 255, 255, 0.7);
}

/* Carousel Arrows */
.carousel-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: none;
    background: rgba(0, 0, 0, 0.3);
    color: var(--color-white);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    opacity: 0;
    transition: all 0.3s ease;
    backdrop-filter: blur(4px);
}

.news-carousel:hover .carousel-arrow {
    opacity: 1;
}

.carousel-arrow:hover {
    background: rgba(0, 0, 0, 0.5);
}

.carousel-arrow-prev {
    left: 12px;
}

.carousel-arrow-next {
    right: 12px;
}

/* Right: News List */
.news-right {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 535px;
}

.news-list {
    display: flex;
    flex-direction: column;
}

.news-list-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-gray-200);
    transition: background 0.2s ease;
    min-height: 110px;
    box-sizing: border-box;
}

.news-list-item:first-child {
    padding-top: 0;
}

.news-list-item:hover {
    background: var(--color-gray-50);
    margin: 0 calc(-1 * var(--spacing-md));
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
    border-radius: var(--radius-md);
}

/* Thumbnail replacing date */
.news-list-thumb {
    flex-shrink: 0;
    width: 140px;
    height: 88px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    display: block;
}

.news-list-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.news-list-item:hover .news-list-thumb img {
    transform: scale(1.05);
}

.news-list-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.news-list-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-gray-800);
    line-height: 1.5;
    margin-bottom: 6px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-decoration: none;
    transition: color 0.2s ease;
}

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

.news-list-excerpt {
    font-size: 13px;
    color: var(--color-gray-500);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 4px;
}

.news-list-date {
    font-size: 12px;
    color: var(--color-gray-400);
}

/* Pagination: hide non-current page items */
.news-list-item[data-page] {
    display: none;
}

.news-list-item[data-page="1"] {
    display: flex;
}

.read-more {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-primary);
}

/* News Pagination */
.news-pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-200);
}

.pagination-item {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-gray-600);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
    user-select: none;
}

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

.pagination-item.active {
    background: var(--color-primary);
    color: var(--color-white);
}

.pagination-arrow {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gray-400);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
}

.pagination-arrow:hover {
    background: var(--color-gray-100);
    color: var(--color-primary);
}

.load-more {
    text-align: center;
    margin-top: var(--spacing-xl);
}

/* Tags */
.tags-cloud {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.tag {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-white);
    border: 1px solid var(--color-gray-300);
    border-radius: 50px;
    font-size: 14px;
    color: var(--color-gray-700);
    transition: all 0.3s ease;
}

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

/* ========================================
   Contact Page
   ======================================== */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-3xl);
}

.contact-info-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.contact-info-item {
    display: flex;
    gap: 10px;
    align-items: center;
}

.contact-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-gray-100);
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.contact-text h4 {
    font-size: 16px;
    margin-bottom: 2px;
    line-height: 22px;
}

.contact-text p {
    font-size: 14px;
    color: var(--color-gray-600);
    line-height: 18px;
}

.social-section {
    margin-top: var(--spacing-2xl);
}

.social-section h3 {
    font-size: 18px;
    margin-bottom: var(--spacing-md);
}

.social-links-large {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-gray-100);
    border-radius: var(--radius-sm);
    color: var(--color-gray-700);
    transition: all 0.3s ease;
}

.social-link:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

/* Contact Form */
.contact-form-wrapper {
    position: sticky;
    top: calc(var(--header-height) + var(--spacing-lg));
}

.contact-form-box {
    background: var(--color-gray-50);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
}

.contact-form-box h2 {
    font-size: 24px;
    margin-bottom: var(--spacing-sm);
}

.contact-form-box > p {
    font-size: 14px;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-lg);
}

/* Contact Form Grid Layout */
.contact-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.contact-form .form-group {
    margin-bottom: 0;
}

.contact-form .form-group.full-width {
    grid-column: 1 / -1;
}

.contact-form .form-privacy {
    grid-column: 1 / -1;
}

.contact-form .btn {
    grid-column: 1 / -1;
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px var(--spacing-md);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form-privacy {
    margin-bottom: var(--spacing-lg);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 14px;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
}

/* Map */
.map-wrapper {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--color-gray-900);
    color: var(--color-gray-300);
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
    color: var(--color-gray-400);
    font-size: 14px;
    line-height: 1.6;
}

.footer-links a {
    color: var(--color-gray-400);
    font-size: 14px;
    transition: color 0.3s ease;
}

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

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

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

.social-links a {
    color: var(--color-gray-400);
    transition: color 0.3s ease;
}

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

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

.legal-links a {
    color: var(--color-gray-400);
    font-size: 14px;
}

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

/* ========================================
   Link More
   ======================================== */
.link-more {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-primary);
    font-weight: 500;
}

.link-more:hover {
    color: var(--color-primary-dark);
}

/* ========================================
   Demo Modal (shared)
   ======================================== */
body.modal-open {
    overflow: hidden;
}

.demo-modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 16px;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 2000;
    justify-content: center;
    align-items: center;
    opacity: 0;
    overflow: hidden;
    transition: opacity 0.3s ease;
}

.demo-modal-overlay.active {
    display: flex;
    opacity: 1;
}

.demo-modal-overlay.fade-in {
    opacity: 1;
}

.demo-modal {
    position: relative;
    display: flex;
    flex-direction: column;
    background: #ffffff;
    border-radius: 12px;
    width: 560px;
    max-width: 92vw;
    max-height: calc(100vh - 32px);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    transform: translateY(20px) scale(0.97);
    transition: transform 0.3s ease;
}

.demo-modal-overlay.active .demo-modal {
    transform: translateY(0) scale(1);
}

.demo-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px 32px 0;
}

.demo-modal-header h2 {
    font-size: 24px;
    font-weight: 700;
    color: #111827;
    margin: 0;
}

.demo-modal-close {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: #f3f4f6;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.demo-modal-close:hover {
    background: #e5e7eb;
    transform: rotate(90deg);
}

.demo-modal-close svg {
    width: 18px;
    height: 18px;
    color: #4b5563;
}

.demo-modal-desc {
    padding: 8px 32px 0;
    font-size: 14px;
    color: #6b7280;
}

.demo-modal-body {
    padding: 4px 30px 30px;
    overflow-y: auto;
}

.demo-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.demo-form .demo-form-group {
    margin-bottom: 0;
}

.demo-form .demo-form-group.full-width,
.demo-form .demo-form-privacy,
.demo-form .demo-form-submit {
    grid-column: 1 / -1;
}

.demo-form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: #374151;
    margin-bottom: 6px;
}

.demo-form-group label .required {
    color: #c8102e;
}

.demo-form-group input,
.demo-form-group select,
.demo-form-group textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
    color: #1f2937;
    background: #ffffff;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    outline: none;
}

.demo-form-group input::placeholder,
.demo-form-group textarea::placeholder {
    color: #9ca3af;
}

.demo-form-group input:focus,
.demo-form-group select:focus,
.demo-form-group textarea:focus {
    border-color: #c8102e;
    box-shadow: 0 0 0 3px rgba(200, 16, 46, 0.1);
}

.demo-form-group input.invalid,
.demo-form-group select.invalid,
.demo-form-group textarea.invalid {
    border-color: #dc2626;
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

.demo-verify-group {
    display: flex;
    align-items: center;
    gap: 12px;
}

.demo-verify-group input {
    max-width: 120px;
}

.demo-verify-image {
    height: 40px;
    cursor: pointer;
    border-radius: 4px;
    border: 1px solid #e5e7eb;
}

.demo-form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L6 6L11 1' stroke='%236B7280' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 36px;
}

.demo-form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.demo-form-privacy {
    margin-top: 4px;
}

.demo-form-privacy label {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 13px;
    color: #6b7280;
    cursor: pointer;
    line-height: 1.5;
}

.demo-form-privacy input[type="checkbox"] {
    width: 16px;
    height: 16px;
    margin-top: 2px;
    accent-color: #c8102e;
    flex-shrink: 0;
}

.demo-form-privacy a {
    color: #c8102e;
    text-decoration: none;
}

.demo-form-privacy a:hover {
    text-decoration: underline;
}

.demo-form-submit .btn-demo-submit {
    width: 100%;
    padding: 12px 24px;
    font-size: 16px;
    font-weight: 600;
    color: #ffffff;
    background: linear-gradient(135deg, #c8102e 0%, #a00d24 100%);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.demo-form-submit .btn-demo-submit:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(200, 16, 46, 0.4);
}

.demo-form-submit .btn-demo-submit[disabled] {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.demo-form-error {
    display: none;
    grid-column: 1 / -1;
    background: #fef2f2;
    color: #b91c1c;
    border: 1px solid #fca5a5;
    border-radius: 6px;
    padding: 10px 12px;
    font-size: 13px;
    line-height: 1.5;
}

.demo-form-success {
    display: none;
    text-align: center;
    padding: 40px 32px;
}

.demo-form-success .success-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    background: #ecfdf5;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.demo-form-success .success-icon svg {
    width: 32px;
    height: 32px;
    color: #10b981;
}

.demo-form-success h3 {
    font-size: 20px;
    font-weight: 700;
    color: #111827;
    margin-bottom: 8px;
}

.demo-form-success p {
    font-size: 14px;
    color: #6b7280;
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1024px) {
    .hero-title { font-size: 42px; }
    .solutions-grid { grid-template-columns: repeat(2, 1fr); }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .advantages-grid { grid-template-columns: repeat(3, 1fr); gap: var(--spacing-md); }
    .tech-cards { grid-template-columns: 1fr; }
    .partners-grid { grid-template-columns: repeat(2, 1fr); }
    .culture-cards { grid-template-columns: 1fr; }
    .news-grid { grid-template-columns: 1fr; }
    .news-center-layout { grid-template-columns: 1fr; }
    .carousel-track { height: 400px; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .service-sectors-grid { grid-template-columns: repeat(3, 1fr); gap: 40px; }
    .page-title { font-size: 40px; }
}

@media (max-width: 768px) {
    .nav-desktop { display: none; }
    .mobile-toggle { display: flex; }
    .hero { height: 500px; }
    .hero-title { font-size: 32px; }
    .hero-subtitle { font-size: 18px; }
    .section-title { font-size: 28px; }
    .solutions-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .advantages-grid { grid-template-columns: 1fr; }
    .solution-detail-card { grid-template-columns: 1fr; }
    .featured-news-card { grid-template-columns: 1fr; }
    .news-center-layout { grid-template-columns: 1fr; }
    .carousel-track { height: 320px; }
    .carousel-title { font-size: 17px; }
    .news-list-thumb { width: 110px; height: 70px; }
    .about-content { grid-template-columns: 1fr; }
    .contact-layout { grid-template-columns: 1fr; }
    .contact-form-wrapper { position: static; }
    .contact-form { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    .legal-links { flex-direction: column; gap: var(--spacing-sm); }
    .join-us-benefits { grid-template-columns: 1fr; }
    .service-sectors-grid { grid-template-columns: 1fr; gap: 30px; }
    .page-title { font-size: 32px; }
}

@media (max-width: 640px) {
    .hero-actions { flex-direction: column; }
    .hero-actions .btn { width: 100%; }
    .cta-actions { flex-direction: column; }
    .cta-actions .btn { width: 100%; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .stat-card { padding: var(--spacing-md); }
    .stat-value { font-size: 32px; }

    .demo-modal {
        max-width: 95vw;
        max-height: calc(100vh - 20px);
        border-radius: 8px;
    }

    .demo-modal-header {
        padding: 20px 20px 0;
    }

    .demo-modal-desc {
        padding: 8px 20px 0;
    }

    .demo-modal-body {
        padding: 20px;
    }

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

/* ========================================
   Utilities
   ======================================== */
.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;
}

/* ========================================
   Animation Classes
   ======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out forwards;
}

.animate-float {
    animation: float 3s ease-in-out infinite;
}

/* Delay classes */
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }

/* footer bottom */
.footer-bottom {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px 24px;
}

.footer-records {
    display: flex;
    flex-direction: column;
    gap: 8px;
    color: rgb(108, 117, 125);
    font-size: 13px;
    line-height: 1.8;
}

.footer-record-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 12px;
}

.footer-record-row a,
.footer-record-row span {
    color: rgb(108, 117, 125);
    text-decoration: none;
    white-space: normal;
}

.footer-record-row a:hover {
    color: #8a8f95;
}

.footer-cnzz {
    display: inline-flex;
    align-items: center;
}

.footer-cnzz img {
    vertical-align: middle;
}

@media (max-width: 768px) {
    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }

    .footer-records {
        width: 100%;
    }

    .legal-links {
        width: 100%;
        justify-content: flex-start;
        flex-wrap: wrap;
        gap: 8px 16px;
    }
}