/* ==========================================
   全局样式
   ========================================== */
:root {
    --primary-color: #0052d9;
    --primary-dark: #0041a8;
    --primary-light: #4d94ff;
    --secondary-color: #19be6b;
    --accent-color: #ff6b35;
    --text-primary: #1d2129;
    --text-secondary: #4e5969;
    --text-tertiary: #86909c;
    --bg-primary: #ffffff;
    --bg-secondary: #f5f6fa;
    --bg-tertiary: #f8f9fa;
    --border-color: #e5e6eb;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    color: var(--text-primary);
    background: var(--bg-secondary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ==========================================
   导航栏
   ========================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
}

.brand-link {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    transition: transform 0.3s ease;
}

.brand-link:hover {
    transform: translateY(-1px);
}

.brand-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 82, 217, 0.25);
    transition: all 0.3s ease;
}

.brand-icon:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 16px rgba(0, 82, 217, 0.35);
}

.brand-icon i {
    font-size: 24px;
    color: #ffffff;
}

.brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.brand-text-main {
    font-size: 22px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 0.5px;
}

.brand-text-en {
    font-size: 11px;
    font-weight: 500;
    color: var(--text-tertiary);
    letter-spacing: 0.3px;
    margin-top: 2px;
}

.nav-menu {
    display: flex;
    gap: 40px;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

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

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

.nav-actions .btn {
    padding: 10px 24px;
}

.mobile-menu-toggle {
    display: none;
    font-size: 24px;
    color: var(--text-primary);
    cursor: pointer;
    transition: transform 0.3s ease;
}

.mobile-menu-toggle:hover {
    transform: scale(1.1);
}

.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 1999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

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

/* 移动端菜单 */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 85%;
    max-width: 320px;
    height: 100vh;
    background: var(--bg-primary);
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.15);
    z-index: 2000;
    transition: right 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 0;
    overflow-y: auto;
}

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

.mobile-menu::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
}

.mobile-menu-close {
    position: relative;
    text-align: right;
    font-size: 24px;
    color: white;
    cursor: pointer;
    padding: 18px 24px;
    margin-bottom: 20px;
    z-index: 1;
}

.mobile-menu-close:hover {
    opacity: 0.8;
}

.mobile-menu-links {
    display: flex;
    flex-direction: column;
    padding: 0 20px 20px;
    gap: 8px;
}

.mobile-link {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    padding: 16px 20px;
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 12px;
}

.mobile-link::before {
    content: '';
    width: 4px;
    height: 20px;
    background: var(--primary-color);
    border-radius: 2px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.mobile-link:hover,
.mobile-link:active {
    background: var(--bg-tertiary);
    color: var(--primary-color);
    transform: translateX(4px);
}

.mobile-link:hover::before,
.mobile-link:active::before {
    opacity: 1;
}

/* ==========================================
   按钮样式
   ========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(0, 82, 217, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 82, 217, 0.4);
}

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

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

.btn-lg {
    padding: 16px 36px;
    font-size: 18px;
}

/* ==========================================
   Hero Section
   ========================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 70px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
}

.hero-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
}

.shape-1 {
    width: 500px;
    height: 500px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    top: -200px;
    left: -200px;
    animation: float 8s ease-in-out infinite;
}

.shape-2 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, var(--secondary-color), #7fdbab);
    bottom: -150px;
    right: -150px;
    animation: float 10s ease-in-out infinite reverse;
}

.shape-3 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, var(--accent-color), #ffb088);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: float 12s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-30px) rotate(10deg);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-title {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    gap: 20px;
    margin-bottom: 60px;
}

.hero-stats {
    display: flex;
    gap: 60px;
    padding: 40px 0;
}

.stat-item {
    text-align: center;
    transition: transform 0.3s ease;
}

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

.stat-number {
    font-size: 36px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
    line-height: 1.2;
}

.stat-label {
    font-size: 14px;
    color: var(--text-tertiary);
    font-weight: 500;
    letter-spacing: 0.5px;
}

/* 手机模型 */
.hero-image {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    position: relative;
    z-index: 2;
}

.phone-frame {
    width: 300px;
    height: 600px;
    background: linear-gradient(135deg, #1d2129 0%, #2e3440 100%);
    border-radius: 40px;
    padding: 12px;
    box-shadow: var(--shadow-lg);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: white;
    border-radius: 32px;
    overflow: hidden;
}

.screenshot {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
}

.floating-card {
    position: absolute;
    background: white;
    padding: 16px 24px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
    animation: floatCard 3s ease-in-out infinite;
}

.floating-card i {
    font-size: 24px;
    color: var(--primary-color);
}

.card-1 {
    top: 10%;
    left: -10%;
    animation-delay: 0s;
}

.card-2 {
    top: 50%;
    right: -15%;
    animation-delay: 1s;
}

.card-3 {
    bottom: 15%;
    left: -5%;
    animation-delay: 2s;
}

@keyframes floatCard {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* ==========================================
   Section 通用样式
   ========================================== */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-badge {
    display: inline-block;
    padding: 8px 20px;
    background: linear-gradient(135deg, rgba(0, 82, 217, 0.1), rgba(77, 148, 255, 0.1));
    color: var(--primary-color);
    border-radius: 24px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
}

.section-title {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 16px;
}

.section-description {
    font-size: 18px;
    color: var(--text-secondary);
}

/* ==========================================
   功能特点
   ========================================== */
.features {
    background: var(--bg-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background: var(--bg-tertiary);
    padding: 40px;
    border-radius: var(--radius-xl);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
    background: white;
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.feature-icon i {
    font-size: 36px;
    color: white;
}

.feature-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 12px;
}

.feature-description {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ==========================================
   服务分类
   ========================================== */
.categories {
    background: var(--bg-secondary);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.category-card {
    background: white;
    padding: 32px;
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.category-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
}

.category-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, rgba(0, 82, 217, 0.1), rgba(77, 148, 255, 0.1));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.category-icon i {
    font-size: 36px;
    color: var(--primary-color);
}

.category-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
}

.category-description {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 16px;
}

.category-count {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 14px;
}

/* ==========================================
   截图展示
   ========================================== */
.screenshots {
    background: var(--bg-primary);
}

.screenshots-slider {
    display: flex;
    gap: 30px;
    overflow-x: auto;
    padding: 20px 0;
    scroll-snap-type: x mandatory;
}

.screenshots-slider::-webkit-scrollbar {
    height: 8px;
}

.screenshots-slider::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
    border-radius: 4px;
}

.screenshots-slider::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

.screenshot-item {
    flex: 0 0 280px;
    scroll-snap-align: center;
    text-align: center;
}

.screenshot-item img {
    width: 100%;
    height: 560px;
    object-fit: cover;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    margin-bottom: 16px;
    background: var(--bg-tertiary);
}

.screenshot-label {
    font-weight: 600;
    color: var(--text-secondary);
}

/* ==========================================
   用户评价
   ========================================== */
.testimonials {
    background: var(--bg-secondary);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.testimonial-card {
    background: white;
    padding: 32px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
}

.testimonial-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.user-avatar {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.user-avatar i {
    font-size: 28px;
    color: white;
}

.user-info {
    flex: 1;
}

.user-name {
    font-weight: 700;
    margin-bottom: 4px;
}

.user-location {
    font-size: 14px;
    color: var(--text-tertiary);
}

.rating {
    display: flex;
    gap: 4px;
}

.rating i {
    color: #ffd700;
    font-size: 14px;
}

.testimonial-text {
    color: var(--text-secondary);
    line-height: 1.8;
    font-style: italic;
}

/* ==========================================
   下载区域
   ========================================== */
.download {
    position: relative;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    overflow: hidden;
}

.download-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

.download-shape {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
}

.download-shape.shape-1 {
    width: 400px;
    height: 400px;
    top: -200px;
    right: -100px;
}

.download-shape.shape-2 {
    width: 300px;
    height: 300px;
    bottom: -150px;
    left: -100px;
}

.download-content {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 80px;
    align-items: center;
}

.download-title {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 16px;
}

.download-description {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 40px;
    line-height: 1.8;
}

.download-buttons {
    display: flex;
    gap: 20px;
    margin-bottom: 32px;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 28px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-md);
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.download-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
}

.download-btn i {
    font-size: 36px;
}

.btn-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.btn-label {
    font-size: 12px;
    opacity: 0.8;
}

.btn-store {
    font-size: 18px;
    font-weight: 700;
}

.download-info {
    display: flex;
    gap: 32px;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
}

.info-item i {
    color: var(--secondary-color);
}

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

.qr-code {
    width: 200px;
    height: 200px;
    background: white;
    border-radius: var(--radius-lg);
    padding: 20px;
    margin-bottom: 16px;
}

.qr-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
}

.qr-placeholder i {
    font-size: 80px;
    color: var(--text-tertiary);
}

.qr-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.qr-text {
    font-size: 16px;
    font-weight: 600;
}

/* ==========================================
   联系我们
   ========================================== */
.contact {
    background: var(--bg-primary);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-card {
    background: var(--bg-tertiary);
    padding: 40px;
    border-radius: var(--radius-xl);
    text-align: center;
    transition: all 0.3s ease;
}

.contact-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
    background: white;
}

.contact-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.contact-icon i {
    font-size: 32px;
    color: white;
}

.contact-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}

.contact-info {
    color: var(--text-secondary);
    font-weight: 600;
}

/* ==========================================
   页脚
   ========================================== */
.footer {
    background: var(--text-primary);
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 16px;
}

.footer-brand i {
    font-size: 32px;
    color: var(--primary-light);
}

.footer-description {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
    margin-bottom: 24px;
}

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

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-link:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
}

.footer-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 20px;
}

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

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

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
}

.footer-bottom p {
    margin: 8px 0;
}

/* ==========================================
   返回顶部按钮
   ========================================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
}

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

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-5px);
}

/* ==========================================
   视频播放器模态框
   ========================================== */
.video-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.video-modal.active {
    opacity: 1;
    visibility: visible;
}

.video-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
}

.video-modal-content {
    position: relative;
    z-index: 1;
    width: 90%;
    max-width: 1200px;
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.video-modal.active .video-modal-content {
    transform: scale(1);
}

.video-close-btn {
    position: absolute;
    top: -50px;
    right: 0;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    color: white;
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 2;
}

.video-close-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: rotate(90deg);
}

.video-container {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 宽高比 */
    background: #000;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.video-container video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* ==========================================
   响应式设计
   ========================================== */
@media (max-width: 1024px) {
    .hero {
        min-height: auto;
        padding: 100px 0 80px;
    }

    .hero-shape {
        filter: blur(60px);
        opacity: 0.2;
    }

    .shape-1 {
        width: 300px;
        height: 300px;
        top: -100px;
        left: -100px;
    }

    .shape-2 {
        width: 250px;
        height: 250px;
        bottom: -80px;
        right: -80px;
    }

    .shape-3 {
        width: 200px;
        height: 200px;
    }

    .hero-content {
        display: flex;
        flex-direction: column;
        text-align: center;
        gap: 50px;
    }

    .hero-text {
        order: 2;
    }

    .hero-image {
        display: flex;
        justify-content: center;
        order: 1;
        margin-bottom: 20px;
    }

    .hero-title {
        font-size: 42px;
    }

    .hero-description {
        font-size: 18px;
    }

    .phone-frame {
        width: 200px;
        height: 400px;
        border-radius: 30px;
        padding: 8px;
    }

    .phone-screen {
        border-radius: 24px;
    }

    .floating-card {
        display: none;
    }

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

    .hero-stats {
        justify-content: center;
        gap: 40px;
        padding: 36px 0;
    }

    .stat-number {
        font-size: 34px;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    .categories-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }

    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    .download-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

    .download-buttons {
        justify-content: center;
    }

    .download-info {
        justify-content: center;
    }

    .download-qr {
        display: none;
    }

    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }

    .navbar .container {
        height: 60px;
    }

    .brand-icon {
        width: 40px;
        height: 40px;
    }

    .brand-icon i {
        font-size: 20px;
    }

    .brand-text-main {
        font-size: 18px;
    }

    .brand-text-en {
        font-size: 10px;
    }

    .nav-menu,
    .nav-actions {
        display: none;
    }

    .mobile-menu-toggle {
        display: block;
        font-size: 20px;
    }

    section {
        padding: 60px 0;
    }

    .hero {
        min-height: auto;
        padding: 90px 0 60px;
        position: relative;
        overflow: hidden;
    }

    .hero-background {
        opacity: 0.8;
    }

    .hero-shape {
        filter: blur(50px);
        opacity: 0.15;
    }

    .shape-1 {
        width: 250px;
        height: 250px;
        top: -50px;
        left: -50px;
    }

    .shape-2 {
        width: 200px;
        height: 200px;
        bottom: -50px;
        right: -50px;
    }

    .shape-3 {
        width: 150px;
        height: 150px;
        display: none;
    }

    .hero-content {
        display: flex;
        flex-direction: column;
        gap: 40px;
    }

    .hero-text {
        position: relative;
        z-index: 2;
        order: 2;
    }

    .hero-image {
        order: 1;
        margin-bottom: 20px;
    }

    .hero-title {
        font-size: 36px;
        line-height: 1.25;
        margin-bottom: 20px;
        letter-spacing: -0.5px;
    }

    .hero-description {
        font-size: 17px;
        margin-bottom: 36px;
        line-height: 1.7;
        color: var(--text-secondary);
        max-width: 600px;
        margin-left: auto;
        margin-right: auto;
    }

    .hero-description br {
        display: none;
    }

    .hero-actions {
        flex-direction: column;
        gap: 14px;
        margin-bottom: 48px;
        max-width: 400px;
        margin-left: auto;
        margin-right: auto;
    }

    .hero-actions .btn {
        width: 100%;
        justify-content: center;
        padding: 16px 32px;
        font-size: 17px;
        font-weight: 600;
        border-radius: var(--radius-lg);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        transition: all 0.3s ease;
    }

    .hero-actions .btn:hover {
        transform: translateY(-2px);
        box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
    }

    .hero-image {
        position: relative;
        margin-top: 30px;
        z-index: 1;
    }

    .phone-frame {
        width: 180px;
        height: 360px;
        border-radius: 28px;
        padding: 7px;
        box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    }

    .phone-screen {
        border-radius: 22px;
    }

    .hero-stats {
        flex-direction: row;
        gap: 32px;
        justify-content: center;
        flex-wrap: wrap;
        padding: 32px 0;
        background: rgba(255, 255, 255, 0.05);
        backdrop-filter: blur(10px);
        border-radius: var(--radius-lg);
        border: 1px solid rgba(255, 255, 255, 0.1);
        margin-top: 20px;
    }

    .stat-item {
        flex: 1;
        min-width: 90px;
        padding: 8px;
    }

    .stat-number {
        font-size: 32px;
        font-weight: 800;
        background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
        margin-bottom: 6px;
    }

    .stat-label {
        font-size: 13px;
        color: var(--text-tertiary);
        font-weight: 500;
    }

    .section-header {
        margin-bottom: 40px;
    }

    .section-badge {
        font-size: 12px;
        padding: 6px 16px;
    }

    .section-title {
        font-size: 28px;
        margin-bottom: 12px;
    }

    .section-description {
        font-size: 16px;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .feature-card {
        padding: 28px;
    }

    .feature-icon {
        width: 64px;
        height: 64px;
        margin-bottom: 20px;
    }

    .feature-icon i {
        font-size: 28px;
    }

    .feature-title {
        font-size: 20px;
        margin-bottom: 10px;
    }

    .feature-description {
        font-size: 14px;
    }

    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .category-card {
        padding: 24px 16px;
    }

    .category-icon {
        width: 60px;
        height: 60px;
        margin-bottom: 16px;
    }

    .category-icon i {
        font-size: 28px;
    }

    .category-title {
        font-size: 18px;
        margin-bottom: 6px;
    }

    .category-description {
        font-size: 12px;
        margin-bottom: 12px;
    }

    .category-count {
        font-size: 12px;
    }

    .screenshots-slider {
        gap: 20px;
        padding: 10px 0;
    }

    .screenshot-item {
        flex: 0 0 240px;
    }

    .screenshot-item img {
        height: 480px;
    }

    .testimonials-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .testimonial-card {
        padding: 24px;
    }

    .testimonial-header {
        margin-bottom: 16px;
    }

    .user-avatar {
        width: 50px;
        height: 50px;
    }

    .user-avatar i {
        font-size: 24px;
    }

    .user-name {
        font-size: 16px;
    }

    .user-location {
        font-size: 12px;
    }

    .testimonial-text {
        font-size: 14px;
    }

    .download {
        padding: 60px 0;
    }

    .download-title {
        font-size: 28px;
        margin-bottom: 12px;
    }

    .download-description {
        font-size: 16px;
        margin-bottom: 32px;
    }

    .download-description br {
        display: none;
    }

    .download-buttons {
        flex-direction: column;
        gap: 12px;
        margin-bottom: 28px;
    }

    .download-btn {
        width: 100%;
        justify-content: center;
        padding: 14px 24px;
    }

    .download-btn i {
        font-size: 28px;
    }

    .btn-label {
        font-size: 11px;
    }

    .btn-store {
        font-size: 16px;
    }

    .download-info {
        flex-direction: row;
        gap: 20px;
        justify-content: center;
        flex-wrap: wrap;
    }

    .info-item {
        font-size: 13px;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .contact-card {
        padding: 28px;
    }

    .contact-icon {
        width: 64px;
        height: 64px;
        margin-bottom: 16px;
    }

    .contact-icon i {
        font-size: 28px;
    }

    .contact-title {
        font-size: 18px;
        margin-bottom: 10px;
    }

    .contact-info {
        font-size: 14px;
    }

    .footer {
        padding: 40px 0 20px;
    }

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

    .footer-brand {
        font-size: 20px;
    }

    .footer-brand i {
        font-size: 24px;
    }

    .footer-description {
        font-size: 14px;
        margin-bottom: 20px;
    }

    .footer-title {
        font-size: 16px;
        margin-bottom: 16px;
    }

    .footer-links li {
        margin-bottom: 10px;
    }

    .footer-links a {
        font-size: 14px;
    }

    .back-to-top {
        width: 44px;
        height: 44px;
        bottom: 20px;
        right: 20px;
    }

    .back-to-top i {
        font-size: 18px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 12px;
    }

    .navbar .container {
        height: 56px;
    }

    .brand-icon {
        width: 36px;
        height: 36px;
    }

    .brand-icon i {
        font-size: 18px;
    }

    .brand-text-main {
        font-size: 16px;
    }

    .brand-text-en {
        font-size: 9px;
    }

    section {
        padding: 50px 0;
    }

    .hero {
        padding: 80px 0 50px;
    }

    .hero-shape {
        filter: blur(40px);
        opacity: 0.1;
    }

    .shape-1 {
        width: 200px;
        height: 200px;
    }

    .shape-2 {
        width: 150px;
        height: 150px;
    }

    .hero-content {
        display: flex;
        flex-direction: column;
        gap: 32px;
    }

    .hero-image {
        order: 1;
        margin-bottom: 16px;
    }

    .hero-text {
        order: 2;
    }

    .hero-title {
        font-size: 28px;
        line-height: 1.25;
        margin-bottom: 18px;
    }

    .hero-description {
        font-size: 16px;
        margin-bottom: 32px;
        line-height: 1.65;
    }

    .hero-actions {
        gap: 12px;
        margin-bottom: 40px;
    }

    .hero-actions .btn {
        padding: 14px 28px;
        font-size: 16px;
    }

    .phone-frame {
        width: 160px;
        height: 320px;
        border-radius: 26px;
        padding: 6px;
    }

    .phone-screen {
        border-radius: 20px;
    }

    .hero-stats {
        gap: 24px;
        padding: 24px 16px;
        margin-top: 16px;
    }

    .stat-item {
        min-width: 70px;
        padding: 4px;
    }

    .stat-number {
        font-size: 28px;
        margin-bottom: 4px;
    }

    .stat-label {
        font-size: 12px;
    }

    .section-header {
        margin-bottom: 32px;
    }

    .section-title {
        font-size: 24px;
    }

    .section-description {
        font-size: 15px;
    }

    .features-grid {
        gap: 16px;
    }

    .feature-card {
        padding: 24px;
    }

    .feature-icon {
        width: 56px;
        height: 56px;
    }

    .feature-icon i {
        font-size: 24px;
    }

    .feature-title {
        font-size: 18px;
    }

    .feature-description {
        font-size: 13px;
    }

    .categories-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .category-card {
        padding: 20px;
    }

    .category-icon {
        width: 56px;
        height: 56px;
    }

    .category-icon i {
        font-size: 24px;
    }

    .category-title {
        font-size: 16px;
    }

    .screenshot-item {
        flex: 0 0 200px;
    }

    .screenshot-item img {
        height: 400px;
    }

    .testimonial-card {
        padding: 20px;
    }

    .download-title {
        font-size: 24px;
    }

    .download-description {
        font-size: 15px;
    }

    .download-btn {
        padding: 12px 20px;
    }

    .download-btn i {
        font-size: 24px;
    }

    .btn-store {
        font-size: 14px;
    }

    .download-info {
        gap: 16px;
    }

    .info-item {
        font-size: 12px;
    }

    .contact-card {
        padding: 24px;
    }

    .contact-icon {
        width: 56px;
        height: 56px;
    }

    .contact-icon i {
        font-size: 24px;
    }

    .contact-title {
        font-size: 16px;
    }

    .contact-info {
        font-size: 13px;
    }

    .footer {
        padding: 32px 0 16px;
    }

    .footer-content {
        gap: 28px;
    }

    .footer-brand {
        font-size: 18px;
    }

    .footer-description {
        font-size: 13px;
    }

    .footer-title {
        font-size: 15px;
    }

    .footer-links a {
        font-size: 13px;
    }

    .back-to-top {
        width: 40px;
        height: 40px;
        bottom: 16px;
        right: 16px;
    }

    .back-to-top i {
        font-size: 16px;
    }

    .video-modal-content {
        width: 95%;
    }

    .video-close-btn {
        top: -40px;
        width: 32px;
        height: 32px;
        font-size: 16px;
    }
}