/* 基础样式 */
:root {
    --primary-color: #2563eb; /* 蓝色 */
    --secondary-color: #3b82f6;
    --accent-color: #1e40af;
    --dark-color: #1e293b;
    --light-color: #f8fafc;
    --gray-color: #64748b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --border-radius: 8px;
    --box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: var(--light-color);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

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

a:hover {
    color: var(--accent-color);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 2rem;
    color: var(--dark-color);
}

/* 导航栏 */
.navbar {
    background-color: white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 0.75rem 0;
    height: 70px;
    display: flex;
    align-items: center;
}

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

.logo a {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark-color);
}

.logo i {
    color: var(--primary-color);
    margin-right: 0.5rem;
    font-size: 1.8rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    height: 100%;
}

.nav-links a {
    color: var(--dark-color);
    font-weight: 500;
    font-size: 1rem;
    height: 100%;
    display: flex;
    align-items: center;
}

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

.nav-links a.active {
    color: var(--primary-color);
    position: relative;
}

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: -0.75rem;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: var(--primary-color);
}

.github-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background-color: var(--dark-color);
    color: white !important;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
}

.github-link:hover {
    background-color: #000;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.hamburger span {
    height: 3px;
    width: 25px;
    background-color: var(--dark-color);
    border-radius: 3px;
}

/* 英雄区域 */
.hero {
    padding: 3rem 0 1.5rem;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    overflow: hidden;
}

.hero .container {
    display: flex;
    gap: 2rem;
    align-items: center;
    flex-wrap: wrap;
    justify-content: space-between;
}

.hero-content {
    flex: 1;
    min-width: 300px;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(90deg, #1e40af, #3b82f6);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    color: var(--dark-color);
    line-height: 1.5;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

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

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

.btn-secondary {
    background-color: white;
    color: var(--dark-color);
    border: 1px solid var(--gray-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-secondary:hover {
    background-color: #f1f5f9;
    color: var(--dark-color);
}

/* 终端效果 */
.terminal {
    flex: 1;
    background-color: #282a36;
    border-radius: var(--border-radius);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    max-width: 1040px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.terminal:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
}

.terminal-header {
    background-color: #1e1f29;
    padding: 0.4rem 0.8rem;
    display: flex;
    gap: 0.4rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.terminal-button {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    transition: all 0.2s ease;
}

.terminal-button:hover {
    transform: scale(1.1);
}

.red {
    background-color: #ff5f56;
}

.yellow {
    background-color: #ffbd2e;
}

.green {
    background-color: #27c93f;
}

.terminal-body {
    padding: 0.5rem;
    background-color: #282a36;
    overflow-y: auto;
    line-height: 1.8;
}

.terminal-body pre {
    margin: 0;
    color: #f8f8f2;
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
    font-size: 0.9rem;
    line-height: 1;
    overflow-x: auto;
}

/* 终端命令高亮 */
.terminal-body .command {
    color: #57c7ff;
    font-weight: bold;
}

.terminal-body .param {
    color: #5af78e;
}

.terminal-body .info {
    color: #5af78e;
}

.terminal-body .warning {
    color: #f3f99d;
}

.terminal-body .error {
    color: #ff5c57;
}

.terminal-body .header {
    color: #57c7ff;
    font-weight: bold;
}

.terminal-body .port-open {
    color: #5af78e;
}

.terminal-body .port-closed {
    color: #ff5c57;
}

.terminal-body .port-filtered {
    color: #f3f99d;
}

.terminal-body .highlight {
    color: #ff6ac1;
}

/* 终端内容样式 */
.terminal-content {
    line-height: 1.65;
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
    color: #f8f8f2;
    white-space: normal;
    word-break: break-word;
    font-size: 0.85rem;
    padding: 0;
    margin: 0;
    width: 100%;
    box-sizing: border-box;
}

/* 控制.terminal-output元素内部所有元素的位置 */
.terminal-output > div {
    display: block;
    margin-bottom: 0 !important;
    margin-top: 0 !important;
}

/* 调整终端各区块的间距 */
.terminal-output .scan-header,
.terminal-output .os-header {
    margin-top: 4.5px !important;
    margin-bottom: 1.5px !important;
}

/* 让端口结果有更好的间距 */
.terminal-output .port-line {
    margin: 0 !important;
    padding: 0 !important;
    margin-bottom: 1.5px !important;
}

/* 确保命令提示符和输入的命令在同一行并紧凑 */
.terminal-content > div:first-child {
    white-space: nowrap; /* 确保命令行不会换行 */
    overflow: visible;
}

/* 强制设置终端内所有div元素的行高 */
.terminal-content div,
.terminal-output div,
.terminal-body div {
    line-height: 1.8 !important;
    margin-top: 0 !important;
    margin-bottom: 1.5px !important;
    padding-top: 0 !important;
    padding-bottom: 0 !important;
}

/* 使各个部分标题紧凑 */
.info-header, .scan-header, .os-header, .summary {
    margin-top: 0 !important;
    margin-bottom: 0 !important;
    line-height: 1.35 !important;
}

/* 确保端口显示行紧凑 */
.port-line {
    margin: 0 !important;
    padding: 0 !important;
    line-height: 1.35 !important;
}

.terminal-output {
    margin-top: 1px;
    padding-left: 0;
}

/* 完全移除段落间距 */
.terminal-output p {
    margin: 0 !important;
    padding: 0 !important;
    line-height: 1.5 !important;
    display: block;
}

/* 确保相邻段落之间没有空间 */
.terminal-output p + p {
    margin-top: 0 !important;
}

/* 为标题和数据段落设置最小间距 */
.terminal-output .info-header,
.terminal-output .scan-header,
.terminal-output .os-header {
    margin-top: 0 !important;
}

/* 端口和结果行更紧凑 */
.terminal-output .port-line {
    line-height: 1.5 !important;
    margin: 0 !important;
    padding: 0 !important;
}

/* 去除总结行上方空间 */
.terminal-output .summary {
    margin-top: 0 !important;
}

.prompt {
    color: #50fa7b;
    font-weight: 500;
    margin-left: 0;
    padding-left: 0;
}

/* 确保终端内容完全贴合左侧 */
.terminal-content > span:first-child {
    margin-left: 0;
    padding-left: 0.15rem;
}

.command {
    color: #ff79c6;
    font-weight: 600;
}

.param {
    color: #8be9fd;
}

.info-header {
    color: #bd93f9;
    font-weight: bold;
    font-size: 1em;
    margin-top: 1.5px;
    margin-bottom: 0;
}

.progress {
    color: #50fa7b;
    margin: 1.5px 0;
}

.scan-header, .os-header {
    color: #ff79c6;
    font-weight: bold;
    margin-top: 1.5px;
    margin-bottom: 0;
}

.port-open, .port-closed, .port-filtered {
    display: inline-block;
    font-weight: bold;
    padding-right: 1px;
}

.port-open {
    color: #50fa7b;
}

.port-closed {
    color: #ff5555;
}

.port-filtered {
    color: #f1fa8c;
}

.port-num, .service {
    padding-right: 1px;
    display: inline-block;
}

.port-num {
    min-width: 60px;
    color: #bd93f9;
}

.service {
    min-width: 45px;
    color: #8be9fd;
}

.version {
    color: #f8f8f2;
}

.highlight {
    color: #ff79c6;
    font-weight: 500;
}

.os-line {
    margin: 0;
}

.summary {
    margin-top: 1px;
    color: #8be9fd;
}

.filepath {
    color: #f1fa8c;
    font-style: italic;
}

/* 为filepath链接添加悬停效果 */
a.filepath:hover {
    color: #f1fa8c;
    text-decoration: underline;
}

/* 功能部分 */
.features {
    padding: 5rem 0;
    background-color: white;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background-color: rgba(37, 99, 235, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.feature-icon i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

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

/* 安装部分 */
.installation {
    padding: 5rem 0;
    background-color: #f8fafc;
}

.installation-options {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    justify-content: center;
}

.install-option {
    flex: 1;
    min-width: 300px;
}

.install-option h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.code-block {
    background-color: #1e1e1e;
    border-radius: var(--border-radius);
    padding: 1rem;
    position: relative;
}

.code-block pre {
    margin: 0;
    color: #f8f8f2;
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
    font-size: 0.9rem;
    line-height: 1.5;
    overflow-x: auto;
}

.copy-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 4px;
    color: #f8f8f2;
    padding: 0.25rem 0.5rem;
    cursor: pointer;
    transition: var(--transition);
}

.copy-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* 文档部分 */
.documentation {
    padding: 5rem 0;
    background-color: white;
}

.doc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 2rem;
}

.doc-card {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    color: var(--dark-color);
    display: block;
}

.doc-card:hover {
    transform: translateY(-5px);
    color: var(--dark-color);
}

.doc-icon {
    width: 60px;
    height: 60px;
    background-color: rgba(37, 99, 235, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.doc-icon i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.doc-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.doc-card p {
    color: var(--gray-color);
    margin-top: 10px;
}

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

.footer-content {
    display: flex;
    justify-content: space-between;
    margin-bottom: 2rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
}

.footer-logo i {
    color: var(--primary-color);
    margin-right: 0.5rem;
}

.footer-links {
    display: flex;
    gap: 4rem;
}

.footer-column h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-column a {
    display: block;
    color: #cbd5e1;
    margin-bottom: 0.5rem;
}

.footer-column a:hover {
    color: white;
}

.copyright {
    border-top: 1px solid #334155;
    padding-top: 2rem;
    text-align: center;
    color: #94a3b8;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero {
        padding: 2rem 0 1rem;
    }
    
    .hero .container {
        flex-direction: column;
        gap: 1.5rem;
    }

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

    .hero-buttons {
        justify-content: center;
    }
    
    .terminal {
        max-width: 100%;
    }
    
    .terminal-body {
        /* 移除max-height限制，让高度自适应内容 */
    }
    
    .footer-content {
        flex-direction: column;
        gap: 2rem;
    }
    
    .footer-links {
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: block;
        cursor: pointer;
    }
    
    .nav-links {
        position: fixed;
        top: 70px; /* Match navbar height */
        left: 0;
        right: 0;
        background-color: white;
        height: 0;
        flex-direction: column;
        overflow: hidden;
        transition: all 0.3s ease;
        z-index: 999;
        align-items: flex-start;
        padding: 0 2rem;
        box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    }
    
    .nav-links.active {
        height: auto;
        padding: 1.5rem 2rem;
    }
    
    .nav-links a {
        margin: 0.5rem 0;
    }
    
    .nav-links a.active::after {
        bottom: -3px;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .footer-links {
        flex-direction: column;
    }
    
    .section-title {
        font-size: 2rem;
    }
}

/* 小屏幕设备的优化 */
@media (max-width: 576px) {
    .terminal-content {
        font-size: 0.8rem;
        line-height: 1.5;
        padding: 0;
    }

    .terminal-body {
        padding: 0.4rem;
    }

    /* 提高小屏幕上代码内容的可读性 */
    .terminal-content div,
    .terminal-output div,
    .terminal-body div {
        line-height: 1.65 !important;
    }
}

/* 演示区域 */
.demo {
    background-color: #f0f7ff;
    padding: 80px 0;
}

.demo .section-description {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 50px;
    color: var(--gray-color);
    font-size: 1.1rem;
}

.demo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.demo-card {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    text-align: center;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.demo-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.demo-icon {
    background-color: var(--primary-color);
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.demo-icon i {
    color: white;
    font-size: 28px;
}

.demo-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.demo-card p {
    color: var(--gray-color);
    margin-bottom: 20px;
    flex-grow: 1;
}

.demo-card .btn {
    align-self: center;
}

/* 新增：高级功能区域样式 */
.advanced-features {
    padding: 80px 0;
    background-color: #f9fafb;
}

.advanced-features .section-description {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 40px;
    font-size: 1.1rem;
    color: #4a5568;
}

/* 协议解析区域样式 */
.protocol-parsing {
    padding: 80px 0;
    background-color: #eef2ff;
}

.protocol-parsing .section-description {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 40px;
    font-size: 1.1rem;
    color: #4a5568;
}

.protocol-features {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 40px;
    margin-bottom: 60px;
}

.protocol-description {
    flex: 1;
    min-width: 300px;
}

.protocol-description h3 {
    margin-bottom: 20px;
    color: #2d3748;
    font-size: 1.5rem;
}

.protocol-description p {
    margin-bottom: 20px;
    color: #4a5568;
    line-height: 1.6;
}

.protocol-list {
    margin-left: 20px;
    margin-bottom: 20px;
}

.protocol-list li {
    margin-bottom: 12px;
    line-height: 1.5;
}

.protocol-image {
    flex: 1;
    min-width: 300px;
    text-align: center;
}

.protocol-screenshot {
    max-width: 100%;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.protocol-caption {
    margin-top: 15px;
    font-style: italic;
    color: #718096;
}

.protocol-applications h3 {
    text-align: center;
    margin-bottom: 30px;
    color: #2d3748;
    font-size: 1.5rem;
}

.application-cards {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
}

.application-card {
    flex: 1;
    min-width: 250px;
    max-width: 350px;
    padding: 25px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s, box-shadow 0.3s;
}

.application-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.application-icon {
    width: 60px;
    height: 60px;
    background-color: #ebf4ff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
}

.application-icon i {
    font-size: 24px;
    color: #4299e1;
}

.application-card h4 {
    margin-bottom: 12px;
    color: #2d3748;
    font-size: 1.25rem;
}

.application-card p {
    color: #4a5568;
    line-height: 1.5;
}

/* 使用示例区域样式 */
.usage-examples {
    padding: 80px 0;
    background-color: #f9fafb;
}

.usage-examples .section-description {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 40px;
    font-size: 1.1rem;
    color: #4a5568;
}

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

.example-card {
    background-color: white;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.example-card h3 {
    margin-bottom: 15px;
    color: #2d3748;
    font-size: 1.25rem;
}

.example-card p {
    margin-top: 15px;
    color: #4a5568;
}

.example-card .code-block {
    margin-bottom: 0;
}

/* 比较表格区域样式 */
.comparison {
    padding: 80px 0;
}

.comparison .section-description {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 40px;
    font-size: 1.1rem;
    color: #4a5568;
}

.comparison-table-wrapper {
    overflow-x: auto;
    margin-bottom: 20px;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.comparison-table th, 
.comparison-table td {
    padding: 12px 15px;
    text-align: center;
    border: 1px solid #e2e8f0;
}

.comparison-table th {
    background-color: #f8fafc;
    color: #2d3748;
    font-weight: 600;
}

.comparison-table tbody tr:nth-child(even) {
    background-color: #f8fafc;
}

.comparison-table tbody tr:hover {
    background-color: #edf2f7;
}

.text-success {
    color: #48bb78;
}

.text-danger {
    color: #f56565;
}

.comparison-note {
    text-align: center;
    font-style: italic;
    color: #718096;
}

/* 对安装部分的增强样式 */
.installation .section-description {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 40px;
    font-size: 1.1rem;
    color: #4a5568;
}

.install-option p {
    margin-bottom: 15px;
    color: #4a5568;
}

/* 文档区域增强样式 */
.documentation .section-description {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 40px;
    font-size: 1.1rem;
    color: #4a5568;
}

/* 通用部分描述样式 */
.section-description {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 40px;
    font-size: 1.1rem;
    color: #4a5568;
}

/* 响应式调整 */
@media (max-width: 992px) {
    .protocol-features {
        flex-direction: column;
    }
    
    .application-cards {
        justify-content: space-around;
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: 8px 10px;
        font-size: 0.9rem;
    }
}

@media (max-width: 768px) {
    .protocol-parsing,
    .advanced-features,
    .usage-examples,
    .comparison {
        padding: 60px 0;
    }
    
    .application-card {
        min-width: 100%;
    }
    
    .examples-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    .comparison-table th,
    .comparison-table td {
        padding: 6px 8px;
        font-size: 0.8rem;
    }
}

/* 增加页脚列的样式 */
@media (min-width: 768px) {
    .footer-links {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* 回到顶部按钮样式 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px) scale(0.9);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    z-index: 9999;
}

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

.back-to-top:hover {
    background-color: var(--accent-color);
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 6px 16px rgba(30, 64, 175, 0.4);
}

.back-to-top:active {
    transform: translateY(0) scale(0.95);
}

.back-to-top.clicked {
    animation: pulse 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.back-to-top i {
    font-size: 24px;
    animation: float 2s infinite;
    transform: rotate(270deg);
}

@keyframes float {
    0% {
        transform: translateY(0) rotate(270deg);
    }
    50% {
        transform: translateY(-6px) rotate(270deg);
    }
    100% {
        transform: translateY(0) rotate(270deg);
    }
}

/* 恢复火焰效果但位置调整为垂直火箭 */
.back-to-top::after {
    content: '';
    position: absolute;
    bottom: 15px;
    left: 50%;
    transform: translateX(-50%);
    width: 10px;
    height: 10px;
    background-color: #ff6b6b;
    border-radius: 50%;
    opacity: 0.8;
    box-shadow: 0 0 10px 3px rgba(255, 107, 107, 0.7);
    animation: flame 0.6s infinite alternate;
}

@keyframes flame {
    0% {
        opacity: 0.5;
        transform: translateX(-50%) scale(0.8);
    }
    100% {
        opacity: 0.9;
        transform: translateX(-50%) scale(1.2);
    }
}

/* 点击时的火箭加速效果 */
.back-to-top.clicked i {
    animation: rocket-launch 0.5s;
}

@keyframes rocket-launch {
    0% {
        transform: translateY(0) rotate(270deg) scale(1);
    }
    50% {
        transform: translateY(-15px) rotate(270deg) scale(0.9);
    }
    100% {
        transform: translateY(0) rotate(270deg) scale(1);
    }
}

/* 脉冲动画效果 */
@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.7);
        transform: scale(0.95);
    }
    70% {
        box-shadow: 0 0 0 15px rgba(37, 99, 235, 0);
        transform: scale(1.1);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(37, 99, 235, 0);
        transform: scale(1);
    }
}

/* 针对移动设备的调整 */
@media (max-width: 768px) {
    .back-to-top {
        width: 45px;
        height: 45px;
        bottom: 20px;
        right: 20px;
    }
}

/* 开发状态提示样式 */
.dev-notice {
    background-color: #fffbeb;
    border-top: 1px solid #ffeeba;
    border-bottom: 1px solid #ffeeba;
    padding: 1.5rem 0;
    margin-bottom: 0;
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 15px rgba(255, 152, 0, 0.1);
}

.dev-notice::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #ff9800, #ffeb3b, #ff9800);
    animation: shimmer 2.5s infinite linear;
    background-size: 200% 100%;
}

@keyframes shimmer {
    0% {
        background-position: 100% 0;
    }
    100% {
        background-position: -100% 0;
    }
}

.dev-notice-content {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.dev-notice-icon {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background-color: #fff;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 4px 15px rgba(255, 152, 0, 0.2);
    border: 2px solid #ff9800;
    animation: pulse 2s infinite ease-in-out;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        box-shadow: 0 4px 15px rgba(255, 152, 0, 0.2);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 4px 20px rgba(255, 152, 0, 0.3);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 4px 15px rgba(255, 152, 0, 0.2);
    }
}

.dev-notice-icon i {
    font-size: 28px;
    color: #ff9800;
}

.dev-notice-text h2 {
    font-size: 1.5rem;
    color: #9a5700;
    margin-top: 0;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.dev-notice-text p {
    color: #5d4a02;
    margin-bottom: 0.5rem;
    line-height: 1.6;
    max-width: 800px;
}

.dev-notice-text strong {
    color: #d97706;
    font-weight: 600;
}

.dev-notice-text a {
    color: #0056b3;
    text-decoration: underline;
    font-weight: 500;
    transition: all 0.2s ease;
}

.dev-notice-text a:hover {
    color: #003d82;
    text-decoration: underline;
}

@media (max-width: 768px) {
    .dev-notice {
        padding: 1.2rem 0;
    }
    
    .dev-notice-content {
        flex-direction: column;
        text-align: center;
        gap: 0.8rem;
    }

    .dev-notice-icon {
        margin: 0 auto;
        width: 50px;
        height: 50px;
    }
    
    .dev-notice-icon i {
        font-size: 24px;
    }
    
    .dev-notice-text h2 {
        font-size: 1.3rem;
    }
}

/* 功能部分 */