/* ================================================================
   iPMU Pro - 产品介绍页面专用样式
   命名空间: .product-page（避免与主题冲突）
   ================================================================ */

/* === 1. 变量与页面容器 === */
.product-page {
    --bg-base: #000000;
    --bg-elevated: #151516;
    --bg-glass: rgba(28, 28, 30, 0.6);
    --border-subtle: rgba(255, 255, 255, 0.08);

    --text-title: #F5F5F7;
    --text-body: #A1A1A6;
    --text-muted: #6E6E73;

    --accent-blue: #2997FF;
    --accent-purple: #BF5AF2;
    --accent-green: #30D158;
    --accent-orange: #FF9F0A;
    --accent-red: #FF453A;

    --radius-lg: 24px;
    --radius-md: 16px;

    --font-stack: "SF Pro Display", "SF Pro Text", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, Arial, sans-serif;
    --font-mono: "SF Mono", "Menlo", "Consolas", monospace;

    background-color: var(--bg-base);
    color: var(--text-body);
    font-family: var(--font-stack);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    min-height: 100vh;
}

.product-page *, .product-page *::before, .product-page *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

.product-page a { text-decoration: none; color: inherit; transition: color 0.3s; }

/* === 1b. 顶栏（复刻 courses.css 顶栏样式） === */
.product-page .cp-topbar {
    height: 60px;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    padding: 0 40px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}
.product-page .cp-nav-links {
    position: absolute;
    left: 50%; transform: translateX(-50%);
    display: flex; gap: 32px;
}
.product-page .cp-nav-links a {
    color: rgba(255,255,255,0.5);
    text-decoration: none; font-size: 13px;
    transition: color 0.3s; letter-spacing: 0.02em;
}
.product-page .cp-nav-links a:hover { color: #fff; }
.product-page .cp-nav-links a.active { color: #fff; font-weight: 500; }
.product-page .cp-right-area { margin-left: auto; display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.product-page .cp-btn-login {
    background: transparent; border: none;
    color: #0ea5e9; font-size: 13px; cursor: pointer;
    letter-spacing: 0.02em; transition: opacity 0.3s;
    text-decoration: none;
}
.product-page .cp-btn-login:hover { opacity: 0.7; }

/* === 2. 滚动浮现动画 === */
.product-page .reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 1s cubic-bezier(0.16, 1, 0.3, 1);
}
.product-page .reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* === 3. 全局布局容器 === */
.product-page .pp-section { padding: 120px 0; position: relative; }
.product-page .pp-container { max-width: 1080px; margin: 0 auto; padding: 0 30px; }

.product-page .pp-overline {
    font-size: 12px; font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase;
    color: var(--accent-blue); margin-bottom: 16px; display: block;
}

.product-page .pp-section-title {
    font-size: 48px; font-weight: 700; letter-spacing: -0.02em; color: var(--text-title);
    margin-bottom: 20px; line-height: 1.1;
}

.product-page .pp-section-subtitle {
    font-size: 20px; font-weight: 400; color: var(--text-body); line-height: 1.4;
    max-width: 700px;
}

.product-page .pp-text-center { text-align: center; }
.product-page .pp-mx-auto { margin-left: auto; margin-right: auto; }

/* === 4. Hero 区域 === */
.product-page .pp-hero {
    padding: 160px 0 100px;
    text-align: center;
    position: relative;
}

.product-page .pp-hero-glow {
    position: absolute; top: 30%; left: 50%; transform: translate(-50%, -50%);
    width: 800px; height: 800px;
    background: radial-gradient(circle, rgba(41, 151, 255, 0.15) 0%, transparent 60%);
    z-index: 0; pointer-events: none;
}

.product-page .pp-hero h1 {
    font-size: 64px; font-weight: 800; letter-spacing: -0.04em; line-height: 1.05;
    margin-bottom: 24px;
    background: linear-gradient(180deg, #FFFFFF 0%, #A1A1A6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.product-page .pp-hero p {
    font-size: 24px; color: var(--text-body); max-width: 800px;
    margin: 0 auto 48px; font-weight: 400; position: relative;
}

.product-page .pp-btn-group { display: flex; gap: 16px; justify-content: center; margin-bottom: 80px; position: relative; }

.product-page .pp-btn {
    padding: 14px 28px; border-radius: 100px; font-size: 15px; font-weight: 600;
    cursor: pointer; transition: all 0.3s; text-align: center; border: none;
    text-decoration: none; display: inline-block;
}
.product-page .pp-btn-primary { background: var(--text-title); color: var(--bg-base); }
.product-page .pp-btn-primary:hover { transform: scale(1.02); background: #fff; box-shadow: 0 4px 20px rgba(255,255,255,0.2); }
.product-page .pp-btn-secondary { background: rgba(255,255,255,0.08); color: var(--text-title); backdrop-filter: blur(10px); }
.product-page .pp-btn-secondary:hover { background: rgba(255,255,255,0.12); }

/* Stats Grid */
.product-page .pp-stats-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 2px;
    background: var(--border-subtle);
    padding: 1px; border-radius: var(--radius-md); overflow: hidden;
    max-width: 900px; margin: 0 auto; position: relative;
}
.product-page .pp-stat-box {
    background: var(--bg-elevated); padding: 32px 20px;
}
.product-page .pp-stat-value { font-size: 36px; font-weight: 700; color: var(--text-title); letter-spacing: -0.02em; line-height: 1;}
.product-page .pp-stat-label { font-size: 13px; font-weight: 600; color: var(--text-muted); margin-top: 8px; text-transform: uppercase; letter-spacing: 0.05em;}

/* === 5. Bento Box 网格系统 === */
.product-page .pp-bento-grid {
    display: grid;
    gap: 24px;
    grid-template-columns: repeat(12, 1fr);
    margin-top: 60px;
}

.product-page .pp-bento-card {
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 40px;
    display: flex; flex-direction: column;
    overflow: hidden; position: relative;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.product-page .pp-bento-card:hover {
    transform: scale(1.01);
    border-color: rgba(255,255,255,0.15);
}

.product-page .pp-card-icon { font-size: 28px; color: var(--accent-blue); margin-bottom: 20px; }
.product-page .pp-card-title { font-size: 20px; font-weight: 600; color: var(--text-title); margin-bottom: 12px; letter-spacing: -0.01em;}
.product-page .pp-card-body { font-size: 15px; color: var(--text-body); line-height: 1.5; font-weight: 400;}

.product-page .pp-card-badge {
    display: inline-block; padding: 4px 10px; border-radius: 6px;
    font-size: 11px; font-weight: 700; background: rgba(255,255,255,0.1); color: var(--text-title);
    vertical-align: middle; margin-left: 8px;
}

/* UI Placeholder */
.product-page .pp-ui-placeholder {
    margin-top: 30px;
    background: var(--bg-base);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    height: 100%; min-height: 200px;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    color: var(--text-muted); font-size: 13px; font-family: var(--font-mono); text-align: center; padding: 20px;
}
.product-page .pp-ui-placeholder i { font-size: 32px; margin-bottom: 12px; color: #333; }

/* === 6. macOS Style Table === */
.product-page .pp-mac-table {
    width: 100%; border-collapse: collapse; margin-top: 30px;
    font-size: 14px; text-align: left;
}
.product-page .pp-mac-table th {
    color: var(--text-muted); font-weight: 600; padding: 16px 20px;
    border-bottom: 1px solid var(--border-subtle);
}
.product-page .pp-mac-table td {
    color: var(--text-title); padding: 16px 20px;
    border-bottom: 1px solid var(--border-subtle);
}
.product-page .pp-mac-table code {
    font-family: var(--font-mono); font-size: 13px; color: var(--accent-purple);
    background: rgba(191, 90, 242, 0.1); padding: 2px 6px; border-radius: 4px;
}

/* === 7. 模块特定样式 === */

/* Feature List */
.product-page .pp-feature-list { list-style: none; margin-top: 16px; }
.product-page .pp-feature-list li {
    position: relative; padding-left: 20px; margin-bottom: 8px;
    color: var(--text-body); font-size: 15px;
}
.product-page .pp-feature-list li::before {
    content: '\2022'; position: absolute; left: 0; color: var(--accent-blue); font-weight: bold;
}

/* KPI Pills */
.product-page .pp-kpi-container { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.product-page .pp-kpi-pill {
    padding: 8px 16px; border-radius: 100px; font-size: 13px; font-weight: 600;
    background: rgba(255,255,255,0.05); color: var(--text-title);
    border: 1px solid var(--border-subtle); font-family: var(--font-mono);
}

/* Alert Cards */
.product-page .pp-alert-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 24px; }
.product-page .pp-alert-card { padding: 20px; border-radius: var(--radius-md); border: 1px solid var(--border-subtle); text-align: center;}
.product-page .pp-alert-card.yellow { background: rgba(255, 159, 10, 0.05); border-color: rgba(255, 159, 10, 0.2); }
.product-page .pp-alert-card.orange { background: rgba(255, 105, 97, 0.05); border-color: rgba(255, 105, 97, 0.2); }
.product-page .pp-alert-card.red    { background: rgba(255, 59, 48, 0.05);  border-color: rgba(255, 59, 48, 0.2); }

.product-page .pp-alert-title { font-size: 15px; font-weight: 700; margin-bottom: 8px;}
.product-page .pp-alert-card.yellow .pp-alert-title { color: var(--accent-orange); }
.product-page .pp-alert-card.orange .pp-alert-title { color: #FF6961; }
.product-page .pp-alert-card.red .pp-alert-title    { color: var(--accent-red); }

.product-page .pp-alert-cond { font-size: 13px; color: var(--text-body); margin-bottom: 12px; line-height: 1.4;}
.product-page .pp-alert-act { font-size: 12px; font-weight: 600; color: var(--text-title); padding: 4px 12px; background: rgba(255,255,255,0.1); border-radius: 100px; display: inline-block;}

/* === 8. Footer === */
.product-page .pp-footer {
    padding: 40px 0; text-align: center;
    border-top: 1px solid var(--border-subtle);
    color: var(--text-muted); font-size: 12px;
}
.product-page .pp-footer a {
    color: var(--text-muted); text-decoration: none; margin: 0 10px;
    transition: color 0.3s;
}
.product-page .pp-footer a:hover { color: var(--text-body); }

/* === 9. 响应式 === */
@media (max-width: 768px) {
    /* 顶栏 */
    .product-page .cp-topbar { padding: 0 16px; }
    .product-page .cp-nav-links { position: static; transform: none; gap: 6px; }
    .product-page .cp-right-area { gap: 8px; }
    .product-page .cp-btn-login { font-size: 11px; }

    /* Hero */
    .product-page .pp-hero { padding: 100px 0 60px; }
    .product-page .pp-hero h1 { font-size: 32px; }
    .product-page .pp-hero p { font-size: 16px; }
    .product-page .pp-section-title { font-size: 28px; }
    .product-page .pp-section-subtitle { font-size: 16px; }

    /* 间距 */
    .product-page .pp-section { padding: 60px 0; }
    .product-page .pp-container { padding: 0 16px; }

    /* Stats 改2列 */
    .product-page .pp-stats-grid { grid-template-columns: repeat(2, 1fr); }
    .product-page .pp-stat-value { font-size: 24px; }

    /* Bento 全部单列 */
    .product-page .pp-bento-grid { grid-template-columns: 1fr; }
    .product-page .pp-bento-card { grid-column: span 1 !important; }
    .product-page .pp-bento-card { padding: 24px; }

    /* 告警卡片单列 */
    .product-page .pp-alert-grid { grid-template-columns: 1fr; }

    /* 表格缩放 */
    .product-page .pp-mac-table th,
    .product-page .pp-mac-table td { padding: 10px 8px; font-size: 12px; }

    /* 按钮组 */
    .product-page .pp-btn-group { flex-direction: column; align-items: center; margin-bottom: 40px; }
    .product-page .pp-btn { width: 100%; max-width: 280px; }
}

@media (max-width: 480px) {
    .product-page .cp-nav-links { margin-left: 10px; }
    .product-page .cp-nav-links a { max-width: 2.2em; text-align: center; line-height: 1.3; }
}