/* 重置和基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #1f2937;
    background-color: #ffffff;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 导航栏样式 */
.navbar {
    background-color: #ffffff;
    border-bottom: 1px solid #e5e7eb;
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.95);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo .logo-link {
    font-size: 1.8rem;
    font-weight: 700;
    color: #2563eb;
    text-decoration: none;
    transition: color 0.3s ease;
}

.nav-logo .logo-link:hover {
    color: #1d4ed8;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: #6b7280;
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #2563eb;
    background-color: #f3f4f6;
}

.nav-link.active {
    color: #2563eb;
    background-color: #eff6ff;
}

/* 主要内容区域 */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1.5rem 0 0 0;
}

.hero-section {
    width: 100%;
    max-width: 1200px;
    text-align: center;
}

.hero-container {
    max-width: 880px;
    margin: 0 auto;
    padding: clamp(3rem, 6vw, 5rem) 2rem clamp(1.5rem, 3vw, 2.5rem);
}

/* 主标题样式 */
.hero-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    color: #111827;
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.6s ease-out;
}

/* Slogan样式 */
.hero-slogan {
    font-size: clamp(1.125rem, 2.5vw, 1.5rem);
    font-weight: 600;
    color: #374151;
    margin-bottom: 1.25rem;
    animation: fadeInUp 0.6s ease-out 0.1s both;
}

/* 描述文字样式 */
.hero-description {
    font-size: 1.1rem;
    color: #6b7280;
    line-height: 1.8;
    margin-bottom: 2.5rem;
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 0.6s ease-out 0.15s both;
}

/* 按钮容器 */
.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

/* 按钮基础样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 0.75rem;
    transition: all 0.3s ease;
    min-width: 120px;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

/* 主要按钮样式 */
.btn-primary {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    color: white;
    box-shadow: 0 4px 14px 0 rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #1d4ed8, #1e40af);
    box-shadow: 0 6px 20px 0 rgba(37, 99, 235, 0.4);
    transform: translateY(-2px);
}

/* 次要按钮样式 */
.btn-secondary {
    background: transparent;
    color: #2563eb;
    border: 2px solid #2563eb;
}

.btn-secondary:hover {
    background: #2563eb;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px 0 rgba(37, 99, 235, 0.3);
}

/* 页脚样式 */
.footer {
    background-color: #f9fafb;
    border-top: 1px solid #e5e7eb;
    padding: 2rem 0;
    margin-top: auto;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    text-align: center;
}

.footer p {
    color: #6b7280;
    font-size: 0.9rem;
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-container {
        padding: 0 1rem;
        height: 60px;
    }
    
    .nav-menu {
        gap: 1rem;
    }
    
    .nav-link {
        padding: 0.25rem 0.5rem;
        font-size: 0.9rem;
    }
    
    .hero-container {
        padding: 2rem 1rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }

    .hero-slogan {
        font-size: 1.25rem;
    }

    .hero-description {
        font-size: 1rem;
        margin-bottom: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
    
    .btn {
        width: 100%;
        max-width: 200px;
    }
}

@media (max-width: 480px) {
    .nav-menu {
        gap: 0.5rem;
    }
    
    .nav-link {
        font-size: 0.8rem;
        padding: 0.25rem;
    }
    
    .hero-title {
        font-size: 1.75rem;
    }

    .hero-slogan {
        font-size: 1.125rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
}

/* 高级视觉效果 */
.hero-section {
    background:
        radial-gradient(ellipse 80% 60% at 50% 0%, rgba(37, 99, 235, 0.07) 0%, transparent 70%),
        radial-gradient(ellipse 50% 30% at 50% 100%, rgba(37, 99, 235, 0.03) 0%, transparent 70%);
}

/* 按钮点击效果 */
.btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px 0 rgba(37, 99, 235, 0.2);
}

/* 导航链接活跃状态指示器 */
.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background-color: #2563eb;
    border-radius: 1px;
}


/* 安装页面样式 */
.install-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: left;
    padding: 2rem;
    background-color: #ffffff;
    border-radius: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.install-section {
    margin-bottom: 3rem;
}

.install-section h2 {
    font-size: 1.5rem;
    color: #2563eb;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #e5e7eb;
}

.code-block {
    background-color: #f3f4f6;
    padding: 1rem;
    border-radius: 0.5rem;
    margin: 1rem 0;
    overflow-x: auto;
}

.code-block pre {
    font-family: 'Courier New', Courier, monospace;
    color: #1f2937;
    white-space: pre-wrap;
}

.download-link {
    display: inline-block;
    margin: 1rem 0;
    padding: 0.75rem 1.5rem;
    background-color: #2563eb;
    color: white;
    border-radius: 0.5rem;
    text-decoration: none;
    transition: background-color 0.3s ease;
}

.download-link:hover {
    background-color: #1d4ed8;
}


/* 下载表格样式 */
.download-table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
}

.download-table th, .download-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #e5e7eb;
}

.download-table th {
    background-color: #f3f4f6;
    font-weight: 600;
    color: #374151;
}

.download-table tr:hover {
    background-color: #f9fafb;
}

.download-table a {
    color: #2563eb;
    text-decoration: none;
    font-weight: 500;
}

.download-table a:hover {
    text-decoration: underline;
}

/* ══════════════════════════════════════════════
   V4 Design System — Global Texture
   ══════════════════════════════════════════════ */

/* Subtle dot-grid — network/tech brand texture */
body {
    background-image:
        radial-gradient(circle at 1px 1px, rgba(37, 99, 235, 0.035) 1px, transparent 1px);
    background-size: 24px 24px;
    background-position: 0 0;
}

/* ══════════════════════════════════════════════
   V4 — Step 1 Agent Prompt 文本框
   ══════════════════════════════════════════════ */

.step-prompt-box {
    position: relative;
    margin-top: 16px;
    background: #0d1117;
    border: 1px solid #30363d;
    border-radius: 8px;
    overflow: hidden;
}

.step-copy-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: transparent;
    border: 1px solid #404040;
    border-radius: 5px;
    cursor: pointer;
    color: #9ca3af;
    transition: all 0.15s ease;
    z-index: 2;
}

.step-copy-btn:hover {
    background: #21262d;
    border-color: #6b7280;
    color: #e0e0e0;
}

.step-copy-btn.copied {
    background: #065f46;
    border-color: #059669;
    color: #ffffff;
}

.step-prompt-text {
    margin: 0;
    padding: 18px 44px 18px 22px;
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
    font-size: 0.92rem;
    color: #c9d1d9;
    line-height: 1.75;
    white-space: pre-wrap;
    word-break: break-word;
    overflow-x: auto;
    background: transparent;
}

/* ── 响应式：Step 1 prompt ── */
@media (max-width: 768px) {
    .step-prompt-text {
        font-size: 0.85rem;
        padding: 14px 40px 14px 16px;
    }
}

@media (max-width: 480px) {
    .step-prompt-text {
        font-size: 0.78rem;
        padding: 12px 36px 12px 12px;
    }
}

/* ── 减少动效 ── */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}