/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 品牌主色调 - 暖橙色系 */
    --primary-color: #FF8A65;
    --primary-light: #FFB74D;
    --primary-dark: #E65100;

    /* 功能色 */
    --success-color: #4CAF50;
    --warning-color: #FF9800;
    --error-color: #F44336;
    --info-color: #2196F3;

    /* 中性色 */
    --text-primary: #333333;
    --text-secondary: #757575;
    --text-disabled: #9E9E9E;
    --bg-light: #FFF8F5;
    --bg-white: #FFFFFF;

    /* 字体 */
    --font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Arial, "Noto Sans", sans-serif;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-light);
}

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

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

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

/* 导航栏 */
.navbar {
    background-color: var(--bg-white);
    box-shadow: 0 2px 8px rgba(255, 138, 101, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-brand a {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.nav-brand .logo-img {
    width: 36px;
    height: 36px;
    border-radius: 8px;
}

.nav-brand .logo-text {
    font-size: 24px;
    font-weight: bold;
    color: var(--text-primary);
}

.nav-brand .logo {
    font-size: 24px;
    font-weight: bold;
    color: var(--text-primary);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-menu a {
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.3s ease;
}

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

/* Hero 区域 */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: white;
    padding: 100px 0;
    text-align: center;
}

.hero-title {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 10px;
}

.hero-subtitle {
    font-size: 24px;
    margin-bottom: 20px;
    opacity: 0.95;
}

.hero-description {
    font-size: 18px;
    margin-bottom: 40px;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 30px;
}

.btn {
    padding: 12px 32px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-block;
    border: none;
}

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

.btn-primary:hover {
    background-color: transparent;
    color: var(--bg-white);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

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

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

.hero-badges {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-badges img {
    height: 20px;
}

/* 通用区块样式 */
.section {
    padding: 80px 0;
}

.section-title {
    font-size: 36px;
    text-align: center;
    margin-bottom: 50px;
    color: var(--text-primary);
    font-weight: bold;
}

.section-description {
    text-align: center;
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto 40px;
    line-height: 1.8;
}

/* 产品简介 */
.intro {
    background-color: var(--bg-white);
}

.version-badge {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 30px;
}

.badge {
    display: inline-block;
    padding: 8px 20px;
    background-color: var(--bg-light);
    color: var(--text-secondary);
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
}

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

.intro-content {
    max-width: 800px;
    margin: 0 auto;
}

.intro-quote {
    background-color: var(--bg-light);
    padding: 30px;
    border-left: 4px solid var(--primary-color);
    margin: 30px 0;
    font-size: 20px;
    font-style: italic;
    color: var(--text-secondary);
    border-radius: 0 8px 8px 0;
}

/* 功能特性 */
.features {
    background-color: var(--bg-light);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background-color: var(--bg-white);
    padding: 40px 30px;
    border-radius: 16px;
    box-shadow: 0 4px 12px rgba(255, 138, 101, 0.08);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 24px rgba(255, 138, 101, 0.15);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--text-primary);
    font-weight: 600;
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 使用场景 */
.scenarios {
    background-color: var(--bg-white);
}

.scenario-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.scenario-item {
    background-color: var(--bg-light);
    padding: 30px;
    border-radius: 16px;
    transition: transform 0.3s ease;
}

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

.scenario-icon {
    font-size: 40px;
    margin-bottom: 15px;
}

.scenario-item h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--text-primary);
    font-weight: 600;
}

.scenario-item ul {
    list-style: none;
    padding-left: 0;
}

.scenario-item li {
    padding: 8px 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: 20px;
}

.scenario-item li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* 核心优势 */
.advantages {
    background-color: var(--bg-light);
}

.advantage-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.advantage-card {
    background-color: var(--bg-white);
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 4px 12px rgba(255, 138, 101, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.advantage-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(255, 138, 101, 0.15);
}

.advantage-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--text-primary);
    font-weight: 600;
}

.advantage-card p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* 下载区域 */
.download {
    background-color: var(--bg-white);
}

.download-description {
    text-align: center;
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.download-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.platform-card {
    background-color: var(--bg-light);
    padding: 40px 30px;
    border-radius: 16px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.platform-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 12px rgba(255, 138, 101, 0.08);
}

.platform-primary {
    background: linear-gradient(135deg, rgba(255, 138, 101, 0.05) 0%, rgba(255, 183, 77, 0.05) 100%);
    border: 2px solid var(--primary-color);
}

.platform-icon {
    font-size: 64px;
    margin-bottom: 20px;
}

.platform-card h3 {
    font-size: 22px;
    margin-bottom: 10px;
    color: var(--text-primary);
    font-weight: 600;
}

.platform-version {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 14px;
}

.feature-list {
    margin: 20px 0;
    text-align: left;
}

.feature-list p {
    padding: 6px 0;
    color: var(--text-secondary);
    font-size: 14px;
}

.release-note {
    margin-top: 15px;
    color: var(--text-secondary);
    font-size: 13px;
    font-style: italic;
}

.btn-disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.btn-disabled:hover {
    transform: none;
    box-shadow: none;
}

.coming-soon {
    color: var(--text-disabled);
    font-style: italic;
}

.platform-roadmap {
    background-color: var(--bg-light);
    padding: 40px;
    border-radius: 16px;
    margin-top: 40px;
}

.platform-roadmap h3 {
    text-align: center;
    font-size: 24px;
    margin-bottom: 30px;
    color: var(--text-primary);
    font-weight: 600;
}

.roadmap-items {
    display: grid;
    gap: 15px;
}

.roadmap-item {
    display: grid;
    grid-template-columns: 120px 1fr 150px;
    gap: 20px;
    align-items: center;
    background-color: var(--bg-white);
    padding: 20px 30px;
    border-radius: 12px;
    transition: transform 0.3s ease;
}

.roadmap-item:hover {
    transform: translateX(4px);
}

.roadmap-time {
    font-weight: 600;
    color: var(--primary-color);
}

.roadmap-platform {
    color: var(--text-primary);
    font-weight: 500;
}

.roadmap-status {
    text-align: right;
    font-size: 14px;
    padding: 6px 16px;
    border-radius: 20px;
}

.status-current {
    background-color: var(--primary-color);
    color: var(--bg-white);
    font-weight: 500;
}

.status-planned {
    background-color: var(--info-color);
    color: var(--bg-white);
}

.status-future {
    background-color: var(--bg-light);
    color: var(--text-secondary);
}

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

.contact-info {
    max-width: 600px;
    margin: 0 auto;
}

.contact-item {
    background-color: var(--bg-white);
    padding: 20px 30px;
    margin-bottom: 15px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: transform 0.3s ease;
}

.contact-item:hover {
    transform: translateX(4px);
}

.contact-item strong {
    min-width: 100px;
    color: var(--text-primary);
}

.contact-item a {
    color: var(--primary-color);
}

/* 页脚 */
.footer {
    background: linear-gradient(135deg, var(--text-primary) 0%, #555 100%);
    color: var(--bg-white);
    padding: 40px 0 20px;
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--bg-white);
    opacity: 0.8;
}

.footer-links a:hover {
    opacity: 1;
    color: var(--primary-light);
}

.footer-links span {
    opacity: 0.5;
}

.footer-copyright {
    opacity: 0.7;
    margin-bottom: 10px;
}

.footer-note {
    padding: 15px 0 15px;
    opacity: 0.7;
    font-size: 14px;
    gap: 64px;
}
.footer-note a{
   color: var(--bg-white);
}
/* 法律文档页面 */
.legal-content {
    background-color: var(--bg-white);
    min-height: calc(100vh - 200px);
}

.legal-content .container {
    max-width: 900px;
    padding: 60px 20px;
}

.legal-content h1 {
    font-size: 42px;
    margin-bottom: 30px;
    color: var(--text-primary);
    text-align: center;
    font-weight: bold;
}

.legal-meta {
    text-align: center;
    margin-bottom: 40px;
    padding: 20px;
    background-color: var(--bg-light);
    border-radius: 12px;
}

.legal-meta p {
    margin: 5px 0;
    color: var(--text-secondary);
}

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

.legal-section h2 {
    font-size: 28px;
    margin-bottom: 20px;
    color: var(--text-primary);
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 10px;
    font-weight: bold;
}

.legal-section h3 {
    font-size: 20px;
    margin: 25px 0 15px;
    color: var(--text-primary);
    font-weight: 600;
}

.legal-section p {
    margin-bottom: 15px;
    line-height: 1.8;
    color: var(--text-secondary);
}

.legal-section ul {
    margin-left: 30px;
    margin-bottom: 20px;
}

.legal-section li {
    margin-bottom: 10px;
    line-height: 1.8;
    color: var(--text-secondary);
}

.highlight {
    background-color: #FFF3E0;
    border-left: 4px solid var(--warning-color);
    padding: 15px 20px;
    margin: 20px 0;
    border-radius: 0 8px 8px 0;
}

.legal-footer {
    text-align: center;
    margin-top: 60px;
    padding-top: 30px;
    border-top: 1px solid #e0e0e0;
}

.legal-footer p {
    margin: 10px 0;
    color: var(--text-secondary);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-title {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 20px;
    }

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

    .nav-menu {
        gap: 15px;
        font-size: 14px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .feature-grid,
    .scenario-list,
    .advantage-cards,
    .download-content {
        grid-template-columns: 1fr;
    }

    .roadmap-item {
        grid-template-columns: 1fr;
        gap: 10px;
        text-align: center;
    }

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

    .version-badge {
        flex-direction: column;
        align-items: center;
    }

    .legal-content h1 {
        font-size: 32px;
    }

    .legal-section h2 {
        font-size: 24px;
    }
}

@media (max-width: 480px) {
    .navbar .container {
        flex-direction: column;
        gap: 15px;
    }

    .nav-menu {
        width: 100%;
        justify-content: space-around;
    }

    .hero {
        padding: 60px 0;
    }

    .section {
        padding: 50px 0;
    }
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 选中文本样式 */
::selection {
    background-color: var(--primary-color);
    color: var(--bg-white);
}

/* 语言切换器 - 国旗按钮样式 */
.language-switcher {
    position: fixed;
    top: 15px;
    right: 20px;
    z-index: 99999;
    display: block !important;
    visibility: visible !important;
}

.language-switcher .lang-toggle {
    display: flex !important;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.95);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    font-size: 24px;
    line-height: 1;
    position: relative;
    overflow: hidden;
    padding: 0;
    outline: none;
}

.language-switcher .lang-toggle::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 138, 101, 0.1) 0%, rgba(255, 183, 77, 0.1) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.language-switcher .lang-toggle:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 4px 16px rgba(255, 138, 101, 0.2);
    background: rgba(255, 255, 255, 1);
}

.language-switcher .lang-toggle:hover::before {
    opacity: 1;
}

.language-switcher .lang-toggle:active {
    transform: translateY(0) scale(0.95);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

/* 国旗图标 */
.language-switcher .flag-icon {
    position: relative;
    z-index: 1;
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.1));
    display: block;
    line-height: 1;
}

/* 提示文字 */
.language-switcher .lang-tooltip {
    position: absolute;
    top: 50%;
    right: 68px;
    transform: translateY(-50%);
    background: rgba(51, 51, 51, 0.95);
    color: white;
    padding: 8px 14px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    pointer-events: none;
    backdrop-filter: blur(8px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.language-switcher .lang-tooltip::after {
    content: '';
    position: absolute;
    top: 50%;
    right: -4px;
    transform: translateY(-50%) rotate(45deg);
    width: 8px;
    height: 8px;
    background: rgba(51, 51, 51, 0.95);
}

.language-switcher:hover .lang-tooltip {
    opacity: 1;
    visibility: visible;
    right: 72px;
}

/* 移动端响应式 */
@media (max-width: 768px) {
    .language-switcher {
        top: 12px;
        right: 15px;
    }

    .language-switcher .lang-toggle {
        width: 40px;
        height: 40px;
        font-size: 22px;
    }

    .language-switcher .lang-tooltip {
        display: none;
    }
}

/* 平板响应式 */
@media (min-width: 769px) and (max-width: 1024px) {
    .language-switcher {
        top: 20px;
        right: 20px;
    }
}