/* ===== 基础样式 ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #667eea;
    --primary-dark: #5a67d8;
    --secondary: #764ba2;
    --bg: #f0f2f5;
    --card-bg: #ffffff;
    --text: #2d3748;
    --text-light: #718096;
    --border: #e2e8f0;
    --radius: 12px;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
    --transition: 0.3s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== 导航栏 ===== */
.navbar {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 14px 0;
}

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

.logo {
    font-size: 22px;
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 8px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-light);
    padding: 8px 18px;
    border-radius: 8px;
    font-weight: 500;
    transition: var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary);
    background: rgba(102, 126, 234, 0.1);
}

/* ===== Hero 区域 ===== */
.hero {
    padding: 80px 0 60px;
}

.hero .container {
    display: flex;
    align-items: center;
    gap: 60px;
}

.hero-content {
    flex: 1;
}

.hero-title {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: -1px;
}

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

.hero-subtitle {
    font-size: 18px;
    color: var(--text-light);
    margin-bottom: 32px;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.5);
}

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

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

.server-time {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--card-bg);
    padding: 10px 18px;
    border-radius: 8px;
    font-size: 14px;
    color: var(--text-light);
    box-shadow: var(--shadow);
}

.time-icon {
    font-size: 18px;
}

/* 代码卡片 */
.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
}

.code-card {
    background: #1e1e2e;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 440px;
}

.code-header {
    background: #16162a;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27c93f; }

.file-name {
    color: #a0a0b8;
    font-size: 13px;
    margin-left: 12px;
}

.code-body {
    padding: 20px 24px;
    margin: 0;
    overflow-x: auto;
}

.code-body code {
    font-family: "JetBrains Mono", "Fira Code", "Consolas", monospace;
    font-size: 14px;
    line-height: 1.7;
    color: #e0e0f0;
}

.code-body .keyword { color: #c792ea; }
.code-body .class-name { color: #ffcb6b; }
.code-body .method { color: #82aaff; }
.code-body .comment { color: #676e95; }

/* ===== 特性卡片 ===== */
.features {
    padding: 60px 0;
}

.section-title {
    text-align: center;
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 40px;
    letter-spacing: -0.5px;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 32px 28px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid transparent;
}

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

.card-icon {
    font-size: 40px;
    margin-bottom: 16px;
}

.card h3 {
    font-size: 20px;
    margin-bottom: 10px;
    font-weight: 700;
}

.card p {
    color: var(--text-light);
    font-size: 15px;
    line-height: 1.6;
}

/* ===== API 区域 ===== */
.api-section {
    padding: 0 0 60px;
}

.api-list {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.api-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
}

.api-item:last-child {
    border-bottom: none;
}

.method {
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 700;
    font-family: monospace;
    color: #fff;
    min-width: 48px;
    text-align: center;
}

.method.get {
    background: #38a169;
}

.api-path {
    font-family: "JetBrains Mono", "Fira Code", monospace;
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
}

.api-desc {
    color: var(--text-light);
    font-size: 14px;
    flex: 1;
}

.btn-test {
    padding: 6px 16px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: var(--transition);
}

.btn-test:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.api-result {
    margin-top: 16px;
    background: #1e1e2e;
    border-radius: var(--radius);
    overflow: hidden;
}

.api-result-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 20px;
    background: #16162a;
    color: #e0e0f0;
    font-size: 14px;
}

.btn-close {
    background: none;
    border: none;
    color: #a0a0b8;
    cursor: pointer;
    font-size: 16px;
    padding: 4px;
}

.btn-close:hover {
    color: #fff;
}

.api-result pre {
    padding: 16px 20px;
    color: #82aaff;
    font-family: "JetBrains Mono", "Fira Code", monospace;
    font-size: 13px;
    line-height: 1.6;
    overflow-x: auto;
    white-space: pre-wrap;
}
/* ===== 关于页面 ===== */
.about-section {
    padding: 60px 0;
}

.page-title {
    font-size: 36px;
    font-weight: 800;
    margin-bottom: 36px;
    text-align: center;
}

.about-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 24px;
}

.about-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 28px;
    box-shadow: var(--shadow);
}

.about-card h2 {
    font-size: 22px;
    margin-bottom: 14px;
    color: var(--primary);
}

.about-card p {
    color: var(--text-light);
    margin-bottom: 10px;
    font-size: 15px;
    line-height: 1.7;
}

.tech-table {
    width: 100%;
    border-collapse: collapse;
}

.tech-table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    font-size: 15px;
}

.tech-table td:first-child {
    font-weight: 600;
    color: var(--text);
    width: 100px;
}

.tech-table td:last-child {
    color: var(--text-light);
}

/* ===== 页脚 ===== */
.footer {
    text-align: center;
    padding: 28px 0;
    color: var(--text-light);
    font-size: 14px;
    border-top: 1px solid var(--border);
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    .hero .container {
        flex-direction: column;
        gap: 40px;
    }

    .hero-title {
        font-size: 34px;
    }

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

    .code-card {
        max-width: 100%;
    }

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

    .about-content {
        grid-template-columns: 1fr;
    }

    .api-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .nav-links {
        gap: 4px;
    }

    .nav-links a {
        padding: 6px 12px;
        font-size: 14px;
    }
}