:root {
    --primary: #2775ff;
    --primary-dark: #1c5fdf;
    --background: #0f1520;
    --card-bg: #16202e;
    --card-border: #2a3a50;
    --text-primary: #ffffff;
    --text-secondary: #a0aec0;
    --text-tertiary: #718096;
    --success: #0ecb81;
    --warning: #f0b90b;
    --danger: #f6465d;
    --radius: 16px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    padding-bottom: 5px;
}

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

/* 导航栏样式 */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 0;
    position: relative;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

.logo img {
    height: 32px;
    margin-right: 12px;
}

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

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 16px;
    transition: var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text-primary);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.btn {
    padding: 12px 24px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
}

.btn-outline:hover {
    background: rgba(39, 117, 255, 0.1);
}

.btn-primary {
    background: var(--primary);
    color: white;
    border: none;
}

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

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 24px;
    cursor: pointer;
}

/* 英雄区域 */
.hero {
    padding: 80px 0;
    display: flex;
    align-items: center;
    gap: 30px;
}

.hero-content {
    flex: 1;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    position: relative;
}

.hero-image img {
    max-width: 100%;
    border-radius: var(--radius);
    box-shadow: 0 25px 50px -12px rgba(39, 117, 255, 0.25);
    animation: float 6s ease-in-out infinite;
}

.hero h1 {
    font-size: 48px;
    line-height: 1.2;
    margin-bottom: 24px;
}

.hero p {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 500px;
}

.app-badges {
    display: flex;
    gap: 16px;
    margin-top: 24px;
}

.app-badge {
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 12px 20px;
    gap: 10px;
    transition: var(--transition);
    cursor: pointer;
}

.app-badge:hover {
    background: rgba(255, 255, 255, 0.1);
}

.app-badge i {
    font-size: 24px;
}

/* 功能特性 */
.features {
    padding: 100px 0;
}

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

.section-header h2 {
    font-size: 36px;
    margin-bottom: 16px;
}

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

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

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    padding: 40px 30px;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.feature-icon {
    width: 64px;
    height: 64px;
    background: rgba(39, 117, 255, 0.1);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.feature-icon i {
    font-size: 28px;
    color: var(--primary);
}

.feature-card h3 {
    font-size: 22px;
    margin-bottom: 16px;
}

.feature-card p {
    color: var(--text-secondary);
}

/* 生态合作区域 */
.ecosystem {
    padding: 100px 0;
    background: linear-gradient(to bottom, var(--background), var(--card-bg));
    position: relative;
    overflow: hidden;
}

.ecosystem .container {
    max-width: 1000px;
}

.ecosystem-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.ecosystem-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    padding: 30px;
    text-align: center;
    transition: var(--transition);
}

.ecosystem-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
}

.ecosystem-card img {
    max-width: 100%;
    height: auto;
}

/* 联系我们区域 */
.contact-section {
    background: var(--card-bg);
    padding: 60px 0 30px;
}

.contact-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
    text-align: center;
}

.contact-title {
    font-size: 28px;
    margin-bottom: 30px;
}

.contact-options {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 40px;
    margin-bottom: 40px;
}

.contact-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 200px;
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: rgba(39, 117, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
}

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

.contact-option h4 {
    font-size: 18px;
    margin-bottom: 10px;
}

.contact-option p {
    color: var(--text-secondary);
    font-size: 14px;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 30px;
}

.social-links a {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    font-size: 20px;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary);
    transform: translateY(-3px);
}

.copyright {
    text-align: center;
    padding-top: 40px;
    margin-top: 40px;
    border-top: 1px solid var(--card-border);
    color: var(--text-secondary);
    font-size: 14px;
}

/* 动画效果 */
@keyframes float {
    0% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
    100% {
        transform: translateY(0px);
    }
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero {
        flex-direction: column;
        text-align: center;
    }

    .hero p {
        max-width: 100%;
    }

    .app-badges {
        justify-content: center;
    }

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

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

@media (max-width: 768px) {
    .ecosystem-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 960px) {
    .nav-links,
    .nav-actions .btn-outline {
        display: none;
    }

    .nav-actions .btn-primary {
        display: none;
    }

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

    .hero h1 {
        font-size: 24px;
    }

    .hero p {
        font-size: 16px;
    }

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

    .features {
        padding: 60px 0;
    }

    .feature-card {
        padding: 30px 20px;
    }

    .feature-icon {
        width: 56px;
        height: 56px;
        margin: 0 auto 20px;
    }

    .feature-card h3 {
        font-size: 20px;
        text-align: center;
    }

    .feature-card p {
        text-align: center;
    }

    .mobile-image-download {
        display: block;
        text-align: center;
        margin: 8px 0;
        width: 100%;
    }

    .mobile-image-download .image-download-btn {
        display: inline-block;
        padding: 14px 35px;
        background: var(--primary);
        border-radius: 50px;
        font-size: 18px;
        font-weight: 600;
        text-decoration: none !important;
        color: white;
        box-shadow: 0 15px 35px rgba(39, 117, 255, 0.4);
        animation: pulse 2s infinite;
        min-width: 260px;
        transition: var(--transition);
    }

    .mobile-image-download .image-download-btn:hover {
        background: var(--primary-dark);
        transform: scale(1.05);
    }

    .mobile-image-download .image-download-btn i {
        margin-right: 10px;
        font-size: 18px;
        vertical-align: middle;
    }

    .hero-image img {
        max-width: 90%;
        margin-top: 8px;
    }

    .hero {
        padding: 40px 0;
    }

    .ecosystem {
        padding: 60px 0;
    }

    .ecosystem-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 30px auto 0;
    }

    .contact-options {
        flex-direction: column;
        align-items: center;
        gap: 30px;
    }

    .navbar .logo img {
        height: 24px;
    }

    .navbar .logo {
        font-size: 20px;
    }
}

@media (min-width: 960px) {
    .mobile-image-download {
        display: none;
    }
}

/* 移动端菜单 */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -300px;
    width: 300px;
    height: 100%;
    background: var(--card-bg);
    z-index: 1000;
    padding: 30px;
    transition: right 0.3s ease;
    box-shadow: -5px 0 15px rgba(0, 0, 0, 0.2);
    overflow-y: auto;
}

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

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

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

.mobile-menu-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 18px;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

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

.close-menu {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 24px;
    cursor: pointer;
    padding: 15px;
    position: absolute;
    top: 15px;
    right: 15px;
    z-index: 1001;
    border-radius: 50%;
    transition: var(--transition);
}

.close-menu:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: rotate(90deg);
}

.mobile-menu-mask {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.mobile-menu-mask.active {
    display: block;
    opacity: 1;
}

body.menu-open {
    overflow: hidden;
    position: fixed;
    width: 100%;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(39, 117, 255, 0.7);
    }
    70% {
        box-shadow: 0 0 0 15px rgba(39, 117, 255, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(39, 117, 255, 0);
    }
}

@media (max-width: 480px) {
    .mobile-menu {
        width: 280px;
    }

    .close-menu {
        padding: 12px;
        top: 12px;
        right: 12px;
    }
}

/* 固定在底部的下载按钮容器 */
.floating-download-container {
    position: fixed;
    bottom: -100px;
    left: 0;
    width: 100%;
    text-align: center;
    z-index: 100;
    padding: 0 20px;
    transition: bottom 0.3s ease;
    display: none;
}

@media (max-width: 960px) {
    .floating-download-container {
        display: block;
    }
}

.floating-download-container.visible {
    bottom: 20px;
}

.floating-download-btn {
    display: inline-block;
    padding: 14px 35px;
    background: var(--primary);
    border-radius: 50px;
    font-size: 18px;
    font-weight: 600;
    text-decoration: none !important;
    color: white;
    box-shadow: 0 15px 35px rgba(39, 117, 255, 0.4);
    animation: pulse 2s infinite;
    min-width: 260px;
    transition: var(--transition);
}

.floating-download-btn:hover {
    background: var(--primary-dark);
    transform: scale(1.05);
}

.floating-download-btn i {
    margin-right: 10px;
    font-size: 18px;
    vertical-align: middle;
}

/* 回到顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
    box-shadow: 0 5px 15px rgba(39, 117, 255, 0.4);
    cursor: pointer;
    z-index: 999;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
    visibility: hidden;
}

.back-to-top.visible {
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 20px rgba(39, 117, 255, 0.6);
}

@media (max-width: 960px) {
    .back-to-top {
        bottom: 100px;
        right: 20px;
        width: 45px;
        height: 45px;
        font-size: 18px;
    }
}

/* 新增重要申明区域样式 */
.disclaimer-section {
    background: var(--card-bg);
    padding: 60px 0;
    border-top: 1px solid var(--card-border);
}

.disclaimer-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

.disclaimer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.disclaimer-box {
    background: rgba(39, 117, 255, 0.05);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    padding: 30px;
    transition: var(--transition);
}

.disclaimer-box:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
}

.disclaimer-box h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--primary);
}

.disclaimer-box p {
    color: var(--text-secondary);
    margin-bottom: 15px;
    font-size: 14px;
}

.disclaimer-box a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.disclaimer-box a:hover {
    color: var(--text-primary);
}

.disclaimer-box a i {
    font-size: 12px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .disclaimer-content {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .disclaimer-box {
        padding: 20px;
    }

    .disclaimer-box h3 {
        font-size: 18px;
    }
}

/* 语言切换样式 */
.language-switcher {
    position: relative;
    display: inline-block;
    z-index: 10;
}

.language-btn {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 8px 16px;
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.language-btn:hover {
    border-color: var(--primary);
    background: rgba(39, 117, 255, 0.1);
}

.language-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    margin-top: 8px;
    min-width: 140px;
    overflow: hidden;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
    display: none;
}

.language-dropdown.open {
    display: block;
}

.language-option {
    padding: 10px 16px;
    color: var(--text-primary);
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.language-option:hover {
    background: rgba(39, 117, 255, 0.1);
}

.language-flag {
    width: 20px;
    height: 15px;
    object-fit: cover;
    border-radius: 2px;
}

/* 移动端语言切换样式 */
.mobile-language-switcher {
    margin: 20px 0;
    padding: 0 20px;
}

.mobile-language-switcher .language-btn {
    width: 100%;
    justify-content: center;
}

.mobile-language-switcher .language-dropdown {
    position: relative;
    top: 0;
    right: 0;
    width: 100%;
    margin-top: 8px;
    box-shadow: none;
    border: none;
}

/* 新增 */
.stats-container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 30px;
}

.stat-card {
    background: rgba(30, 41, 59, 0.7);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 30px;
    text-align: center;
    flex: 1;
    min-width: 250px;
    max-width: 350px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
}

.stat-number {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    background: linear-gradient(to right, #60a5fa, #4ade80);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.stat-desc {
    font-size: 1.1rem;
    color: #94a3b8;
}

/* 响应式设计 */
@media (max-width: 900px) {
    .stat-number {
        font-size: 2.8rem;
    }
}

@media (max-width: 600px) {
    .stat-card {
        min-width: 100%;
    }
    .stat-number {
        font-size: 2.5rem;
    }
}
