/* ========================================
   腾讯AI产品矩阵 - 样式表
   ======================================== */

/* Tailwind CSS CDN */
@import url('https://cdn.jsdelivr.net/npm/tailwindcss@2.2.19/dist/tailwind.min.css');

/* 腾讯体字体 */
@font-face {
    font-family: 'TencentSans';
    src: url('https://cdn-font.hypergryph.com/TencentSans-W3.woff2') format('woff2');
    font-weight: 300;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: 'TencentSans';
    src: url('https://cdn-font.hypergryph.com/TencentSans-W5.woff2') format('woff2');
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: 'TencentSans';
    src: url('https://cdn-font.hypergryph.com/TencentSans-W7.woff2') format('woff2');
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

/* ---- CSS 变量系统（腾讯蓝） ---- */
:root {
    /* 品牌色 - 腾讯蓝 */
    --primary: #0052D9;
    --primary-dark: #0034B5;
    --primary-light: #3377FF;
    --primary-lighter: #66A3FF;
    --primary-alpha: rgba(0, 82, 217, 0.1);

    /* 辅助色 - 浅蓝 */
    --gold: #00A4FF;
    --gold-light: #66C7FF;
    --gold-dark: #0073E6;

    /* 背景色 - 深蓝科技 */
    --bg-hero-start: #0A1628;
    --bg-hero-end: #0D2B5E;
    --bg-white: #FFFFFF;
    --bg-light: #F4F6F9;
    --bg-lighter: #EEF3FF;

    /* 文字色 */
    --text-white: #FFFFFF;
    --text-dark: #1A1A2E;
    --text-body: #333333;
    --text-secondary: #5A5A5A;
    --text-muted: #8C8C8C;
    --text-light: #999999;

    /* 功能色 */
    --success: #2E7D32;
    --warning: #E65100;
    --danger: #C62828;

    /* 字号 */
    --font-hero: clamp(36px, 6vw, 64px);
    --font-h1: clamp(32px, 4vw, 48px);
    --font-h2: clamp(24px, 3vw, 36px);
    --font-h3: 24px;
    --font-h4: 20px;
    --font-body: 16px;
    --font-small: 14px;
    --font-xs: 12px;

    /* 间距 */
    --space-xs: 8px;
    --space-sm: 16px;
    --space-md: 24px;
    --space-lg: 40px;
    --space-xl: 64px;
    --space-xxl: 100px;

    /* 圆角 - 现代感 */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;

    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);
    --shadow-card: 0 4px 24px rgba(0, 82, 217, 0.06);
    --shadow-card-hover: 0 12px 40px rgba(0, 82, 217, 0.12);

    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.6s ease;

    /* 字体 - 腾讯体 */
    --font-family: 'TencentSans', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

/* ---- CSS Reset & Base ---- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

section[id] {
    scroll-margin-top: 80px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-body);
    line-height: 1.7;
    color: var(--text-body);
    background: var(--bg-white);
    overflow-x: hidden;
}

body.menu-open {
    overflow: hidden;
}

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

img {
    max-width: 100%;
    display: block;
}

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* ---- 通用区块 ---- */
.section {
    padding: var(--space-xxl) 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.section-tag {
    display: inline-block;
    padding: 6px 20px;
    background: var(--primary-alpha);
    color: var(--primary);
    font-size: var(--font-small);
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-sm);
    letter-spacing: 1px;
}

.section-title {
    font-size: var(--font-h1);
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: var(--space-sm);
    line-height: 1.3;
}

.section-desc {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 640px;
    margin: 0 auto;
    line-height: 1.8;
    word-break: keep-all;
}

/* ---- 导航栏 ---- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: background var(--transition-normal), box-shadow var(--transition-normal), transform var(--transition-normal);
    background: transparent;
}

.navbar-hidden {
    transform: translateY(-100%);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.06);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
    font-weight: 700;
    color: var(--text-white);
    transition: color var(--transition-fast);
    white-space: nowrap;
    flex-shrink: 0;
}

.nav-logo-img {
    height: 32px;
    width: auto;
    object-fit: contain;
}

.nav-divider {
    font-size: 14px;
    opacity: 0.4;
    font-weight: 300;
}

.navbar.scrolled .nav-logo {
    color: var(--text-dark);
}

.nav-links {
    display: flex;
    gap: var(--space-md);
    align-items: center;
}

.nav-link {
    font-size: var(--font-small);
    font-weight: 500;
    color: rgba(255, 255, 255, 0.8);
    padding: 6px 0;
    position: relative;
    transition: color var(--transition-fast);
    white-space: nowrap;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width var(--transition-normal);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.navbar.scrolled .nav-link {
    color: var(--text-secondary);
}

.nav-link:hover {
    color: var(--text-white);
}

.navbar.scrolled .nav-link:hover {
    color: var(--primary);
}

/* 汉堡菜单 */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-white);
    transition: all var(--transition-normal);
    border-radius: 1px;
}

.navbar.scrolled .hamburger span {
    background: var(--text-dark);
}

.hamburger.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ---- Hero 首屏 ---- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(160deg, var(--bg-hero-start) 0%, var(--bg-hero-end) 50%, #0D2E5A 100%);
}

#particleCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at 30% 50%, rgba(196, 26, 26, 0.12) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 30%, rgba(212, 168, 75, 0.08) 0%, transparent 50%);
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    padding: var(--space-xxl) var(--space-md);
    max-width: 900px;
}

.hero-badge {
    display: inline-block;
    padding: 8px 24px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--font-small);
    font-weight: 500;
    margin-bottom: var(--space-lg);
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.05);
    letter-spacing: 2px;
}

.hero-title {
    font-size: var(--font-hero);
    font-weight: 700;
    color: var(--text-white);
    line-height: 1.2;
    margin-bottom: var(--space-md);
}

.title-line {
    display: block;
}

.title-gradient {
    background: linear-gradient(135deg, #66C7FF 0%, #00A4FF 30%, #0052D9 70%, #3377FF 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(16px, 2vw, 20px);
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--space-lg);
    line-height: 1.8;
    max-width: 680px;
    margin-left: auto;
    margin-right: auto;
}

/* Hero 产品图标 */
.hero-products {
    display: flex;
    justify-content: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
    flex-wrap: wrap;
}

.hero-product-icon {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    cursor: pointer;
    transition: transform var(--transition-normal);
}

.hero-product-icon:hover {
    transform: translateY(-4px);
}

.icon-glow {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    position: relative;
    transition: all var(--transition-normal);
    animation: breathe 3s ease-in-out infinite;
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-glow svg {
    width: 26px;
    height: 26px;
}

.hero-product-icon:nth-child(2) .icon-glow { animation-delay: 0.6s; }
.hero-product-icon:nth-child(3) .icon-glow { animation-delay: 1.2s; }
.hero-product-icon:nth-child(4) .icon-glow { animation-delay: 1.8s; }

.hero-product-icon:hover .icon-glow {
    background: rgba(196, 26, 26, 0.3);
    border-color: rgba(240, 212, 138, 0.5);
    box-shadow: 0 0 30px rgba(196, 26, 26, 0.3);
}

.hero-product-icon span {
    font-size: var(--font-small);
    color: rgba(255, 255, 255, 0.7);
    font-weight: 500;
}

@keyframes breathe {
    0%, 100% { box-shadow: 0 0 10px rgba(0, 82, 217, 0.1); }
    50% { box-shadow: 0 0 20px rgba(0, 82, 217, 0.25); }
}

/* Hero CTA */
.hero-cta {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* 滚动指示 */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-right: 2px solid rgba(255, 255, 255, 0.4);
    border-bottom: 2px solid rgba(255, 255, 255, 0.4);
    transform: rotate(45deg);
    animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
    0%, 100% { transform: rotate(45deg) translateY(0); opacity: 0.4; }
    50% { transform: rotate(45deg) translateY(8px); opacity: 1; }
}

/* ---- 按钮 ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 32px;
    border-radius: var(--radius-sm);
    font-size: var(--font-body);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: 2px solid transparent;
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 82, 217, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--text-white);
    border-color: rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.6);
    transform: translateY(-2px);
}

/* 带主色调边框的 outline 按钮 */
.btn-outline[style*="border-color:var(--primary)"] {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-outline[style*="border-color:var(--primary)"]:hover {
    background: var(--primary-alpha);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 16px 40px;
    font-size: 18px;
}

/* 按钮组 */
.btn-group {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

/* 返回链接 */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
    margin-top: 12px;
    transition: color 0.2s;
}

.back-link:hover {
    color: #66A3FF;
}

/* 调整cdc页面的返回链接位置 */
.cdc-hero-content .back-link {
    margin-top: 8px;
}

/* ---- AI战略架构图 ---- */
.ai-arch {
    margin-bottom: var(--space-lg);
}

.arch-pillars {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.arch-pillar {
    background: var(--bg-white);
    border: 1px solid #E8ECF2;
    border-radius: var(--radius-md);
    padding: var(--space-sm);
    position: relative;
    transition: all var(--transition-normal);
    overflow: hidden;
}

.arch-pillar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
}

.arch-pillar:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
    border-color: transparent;
}

.pillar-num {
    font-size: 32px;
    font-weight: 800;
    color: var(--primary);
    opacity: 0.15;
    position: absolute;
    top: 12px;
    right: 16px;
    line-height: 1;
}

.pillar-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
    padding-bottom: 4px;
    border-bottom: 1px solid var(--primary-alpha);
}

.pillar-body {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.pillar-block {
    background: var(--bg-light);
    border-radius: var(--radius-sm);
    padding: 8px;
}

.pillar-block-title {
    font-size: 12px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 4px;
}

.pillar-block-sub {
    font-size: 10px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.pillar-tags-row,
.pillar-tags-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.pillar-tags-row span,
.pillar-tags-grid span {
    display: inline-block;
    padding: 2px 8px;
    background: var(--bg-white);
    border: 1px solid #E8ECF2;
    border-radius: var(--radius-full);
    font-size: 11px;
    color: var(--text-secondary);
    white-space: nowrap;
    transition: all var(--transition-fast);
}

.pillar-tags-row span:hover,
.pillar-tags-grid span:hover {
    background: var(--primary-alpha);
    border-color: var(--primary);
    color: var(--primary);
}

/* 底部支撑体系 */
.arch-foundation {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-sm);
    padding: var(--space-sm);
    background: linear-gradient(135deg, #E8F0FE 0%, #D6E8FF 50%, #EBF0F7 100%);
    border-radius: var(--radius-md);
    border: 1px solid rgba(0, 82, 217, 0.1);
}

.arch-found-item {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-sm);
    padding: 10px;
}

.found-title {
    font-size: 12px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 6px;
    padding-bottom: 4px;
    border-bottom: 2px solid var(--primary-alpha);
}

.found-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.found-stat {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.stat-label {
    font-size: 11px;
    color: var(--text-secondary);
}

.stat-value {
    font-size: 18px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1.2;
}

.stat-note {
    font-size: 9px;
    color: var(--text-muted);
}

.arch-cta {
    text-align: center;
    margin-top: var(--space-lg);
    margin-bottom: 0;
}

/* ---- 产品卡片总览 ---- */
.products-overview {
    background: var(--bg-white);
}

.product-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
}

.product-card {
    background: var(--bg-white);
    border: 1px solid #E8ECF2;
    border-radius: var(--radius-md);
    padding: var(--space-lg) var(--space-md);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-card-hover);
    border-color: transparent;
}

.product-card:hover::before {
    transform: scaleX(1);
}

.product-card-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-alpha);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
}

.product-card:hover .product-card-icon {
    background: var(--primary);
    transform: scale(1.05);
}

.product-card:hover .product-card-icon svg {
    fill: white;
    stroke: white;
}

.product-card-icon svg {
    width: 32px;
    height: 32px;
    fill: var(--primary);
    stroke: var(--primary);
    transition: all var(--transition-normal);
}

.product-card h3 {
    font-size: var(--font-h4);
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: var(--space-xs);
}

.product-card p {
    font-size: var(--font-small);
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ---- 产品详情区 ---- */
.product-detail {
    position: relative;
}

.product-detail:nth-child(even) {
    background: var(--bg-light);
}

.detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
}

.detail-grid.reverse {
    direction: rtl;
}

.detail-grid.reverse > * {
    direction: ltr;
}

.product-tag {
    display: inline-block;
    padding: 4px 16px;
    background: var(--primary-alpha);
    color: var(--primary);
    font-size: var(--font-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-sm);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.detail-title {
    font-size: var(--font-h2);
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: var(--space-sm);
    line-height: 1.3;
}

.detail-desc {
    font-size: var(--font-body);
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
    line-height: 1.8;
}

.feature-list {
    margin-bottom: var(--space-md);
    padding-left: var(--space-sm);
    border-left: 3px solid var(--primary);
}

.feature-list li {
    padding: var(--space-xs) 0;
    padding-left: var(--space-sm);
    font-size: var(--font-small);
    color: var(--text-body);
    line-height: 1.7;
    position: relative;
}

.feature-list li strong {
    color: var(--text-dark);
    font-weight: 600;
}

.advantage-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
}

.tag {
    display: inline-block;
    padding: 4px 14px;
    background: var(--bg-lighter);
    color: var(--primary);
    font-size: var(--font-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.tag:hover {
    background: var(--primary);
    color: var(--text-white);
}

/* TI-ONE 架构图卡片 */
.tione-arch-card {
    background: linear-gradient(135deg, #EBF3FE 0%, #E0ECFA 100%);
    border-radius: var(--radius-lg);
    padding: 16px;
    overflow-x: auto;
}

.tione-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 4px;
    font-size: 11px;
    color: #333;
    min-width: 500px;
}

.tione-label {
    background: #4A9EF5;
    color: #fff;
    font-weight: 700;
    font-size: 12px;
    text-align: center;
    padding: 8px 6px;
    border-radius: 6px;
    width: 56px;
    vertical-align: middle;
    line-height: 1.3;
}

.tione-cell {
    background: rgba(255,255,255,0.85);
    border: 1px solid #D0DFEE;
    border-radius: 6px;
    padding: 8px 10px;
    vertical-align: top;
    line-height: 1.4;
}

.tione-side-label {
    background: #4A9EF5;
    color: #fff;
    font-weight: 700;
    font-size: 13px;
    text-align: center;
    padding: 8px;
    border-radius: 6px;
    width: 60px;
    vertical-align: middle;
    writing-mode: vertical-rl;
    text-orientation: mixed;
    letter-spacing: 2px;
}

.tione-cell-side {
    background: rgba(255,255,255,0.85);
    border: 1px solid #D0DFEE;
    border-radius: 6px;
    padding: 6px;
    vertical-align: top;
    width: 70px;
}

.ti-fill {
    display: inline-block;
    background: #4A9EF5;
    color: #fff;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: 4px;
    font-size: 11px;
}

.ti-fill-sm {
    display: inline-block;
    background: #4A9EF5;
    color: #fff;
    font-weight: 600;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 10px;
    text-align: center;
    line-height: 1.3;
}

.ti-bold {
    font-weight: 700;
    color: #1A1A1A;
    font-size: 11px;
}

.ti-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-top: 4px;
}

.ti-tags span {
    padding: 2px 8px;
    background: #fff;
    border: 1px solid #C8D8EA;
    border-radius: 20px;
    font-size: 10px;
    color: #555;
}

.ti-tags-inline {
    display: inline;
}

.ti-tags-inline span {
    display: inline-block;
    padding: 1px 6px;
    background: #fff;
    border: 1px solid #C8D8EA;
    border-radius: 12px;
    font-size: 9px;
    color: #555;
    margin: 1px 2px;
}

.ti-tags-v {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.ti-tags-v span {
    padding: 2px 6px;
    background: #fff;
    border: 1px solid #C8D8EA;
    border-radius: 4px;
    font-size: 9px;
    color: #555;
    text-align: center;
}

.ti-small-box {
    background: rgba(255,255,255,0.9);
    border: 1px solid #C8D8EA;
    border-radius: 4px;
    padding: 6px;
    font-size: 10px;
    text-align: center;
    line-height: 1.3;
    margin-bottom: 4px;
}

.ti-small-fill {
    background: #4A9EF5;
    color: #fff;
    font-weight: 600;
    padding: 6px;
    border-radius: 4px;
    font-size: 10px;
    text-align: center;
    line-height: 1.3;
}

.ti-eval-box {
    display: flex;
    gap: 4px;
}

.tione-bottom {
    margin-top: 8px;
}

.tione-bottom-row {
    background: #5C6B7D;
    color: #fff;
    text-align: center;
    padding: 6px;
    font-size: 11px;
    font-weight: 500;
    border-radius: 4px;
    margin-bottom: 3px;
}

/* 产品详情视觉区 */
.visual-card {
    position: relative;
    height: 400px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: linear-gradient(135deg, #FEF0E0 0%, #F8DFC4 100%);
}

.visual-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0, 82, 217, 0.05) 0%, rgba(0, 82, 217, 0.1) 100%);
}

.visual-card-2 {
    background: linear-gradient(135deg, #E8F0E0 0%, #D0E0C8 100%);
}

.visual-card-2 .visual-bg {
    background: linear-gradient(135deg, rgba(46, 125, 50, 0.05) 0%, rgba(46, 125, 50, 0.1) 100%);
}

.visual-card-3 {
    background: linear-gradient(135deg, #FEE8E8 0%, #F8C4C4 100%);
}

.visual-card-3 .visual-bg {
    background: linear-gradient(135deg, rgba(196, 26, 26, 0.05) 0%, rgba(196, 26, 26, 0.1) 100%);
}

.visual-card-4 {
    background: linear-gradient(135deg, #FEE8E0 0%, #FFD4C4 100%);
}

.visual-card-4 .visual-bg {
    background: linear-gradient(135deg, rgba(255, 109, 0, 0.05) 0%, rgba(255, 109, 0, 0.1) 100%);
}

.visual-card-5 {
    background: linear-gradient(135deg, #E0F0FE 0%, #C4E4FF 100%);
}

.visual-card-5 .visual-bg {
    background: linear-gradient(135deg, rgba(0, 150, 217, 0.05) 0%, rgba(0, 150, 217, 0.1) 100%);
}

.floating-tag {
    position: absolute;
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-sm);
    font-size: var(--font-small);
    font-weight: 600;
    color: var(--text-dark);
    box-shadow: var(--shadow-md);
    animation: float 6s ease-in-out infinite;
}

.ft-1 { top: 15%; left: 10%; animation-delay: 0s; }
.ft-2 { top: 30%; right: 12%; animation-delay: 1s; }
.ft-3 { top: 55%; left: 20%; animation-delay: 2s; }
.ft-4 { bottom: 20%; right: 15%; animation-delay: 3s; }
.ft-5 { bottom: 10%; left: 30%; animation-delay: 4s; }

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

/* ---- OpenClaw 热潮区 ---- */
.openclaw-section {
    background: linear-gradient(135deg, #E8F0FE 0%, #D6E8FF 50%, #EBF0F7 100%);
}

.openclaw-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    padding-left: var(--space-xl);
}

.quote-mark {
    position: absolute;
    left: 0;
    top: -20px;
    font-size: 120px;
    font-weight: 700;
    color: var(--primary);
    opacity: 0.15;
    line-height: 1;
    font-family: Georgia, serif;
}

.openclaw-title {
    font-size: var(--font-h2);
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: var(--space-md);
}

.openclaw-text {
    font-size: var(--font-body);
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: var(--space-sm);
}

.openclaw-text strong {
    color: var(--primary);
    font-weight: 600;
}

.highlight-text {
    color: var(--text-dark) !important;
    font-weight: 600;
    font-size: 18px;
    margin-top: var(--space-md);
    padding: var(--space-sm) var(--space-md);
    background: rgba(255, 255, 255, 0.7);
    border-left: 4px solid var(--primary);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* ---- CodeBuddy 演示区 ---- */
.codebuddy-demo-section {
    background: var(--bg-light);
}

.demo-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-lg);
    border-left: 5px solid var(--primary);
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.demo-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 8px 20px;
    background: var(--primary-alpha);
    border-radius: var(--radius-full);
    color: var(--primary);
    font-size: var(--font-small);
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.demo-title {
    font-size: var(--font-h2);
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: var(--space-sm);
}

.demo-desc {
    font-size: var(--font-body);
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-lg);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.demo-desc strong {
    color: var(--primary);
}

.demo-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.demo-feature {
    padding: var(--space-md);
    border-radius: var(--radius-md);
    background: var(--bg-light);
    transition: all var(--transition-normal);
}

.demo-feature:hover {
    background: var(--primary-alpha);
    transform: translateY(-4px);
}

.demo-feature-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--space-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.demo-feature h4 {
    font-size: var(--font-body);
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: var(--space-xs);
}

.demo-feature p {
    font-size: var(--font-small);
    color: var(--text-secondary);
}

/* ---- 合作展望区 ---- */
.cooperation-section {
    background: linear-gradient(135deg, #FFF8E1 0%, #FFF3E0 50%, #FFE0B2 100%);
    text-align: center;
}

.cooperation-img {
    margin-top: var(--space-lg);
}

/* ---- 页脚 ---- */
.footer {
    background: var(--bg-hero-start);
    color: rgba(255, 255, 255, 0.7);
    padding: var(--space-xl) 0 var(--space-md);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.footer-col h4 {
    font-size: var(--font-body);
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: var(--space-sm);
}

.footer-col li {
    margin-bottom: var(--space-xs);
}

.footer-col a {
    font-size: var(--font-small);
    color: rgba(255, 255, 255, 0.6);
    transition: color var(--transition-fast);
}

.footer-col a:hover {
    color: var(--primary-light);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--space-md);
    text-align: center;
}

.footer-bottom p {
    font-size: var(--font-xs);
    color: rgba(255, 255, 255, 0.4);
}

/* ---- 滚动动画 ---- */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* stagger 延迟 */
.feature-list li {
    opacity: 0;
    transform: translateX(-16px);
    transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.animate-on-scroll.visible .feature-list li,
.visible .feature-list li {
    opacity: 1;
    transform: translateX(0);
}

.feature-list li:nth-child(1) { transition-delay: 0.1s; }
.feature-list li:nth-child(2) { transition-delay: 0.2s; }
.feature-list li:nth-child(3) { transition-delay: 0.3s; }
.feature-list li:nth-child(4) { transition-delay: 0.4s; }
.feature-list li:nth-child(5) { transition-delay: 0.5s; }

/* Hero 文字逐行淡入 */
.hero-content .animate-on-scroll:nth-child(1) { transition-delay: 0.1s; }
.hero-content .animate-on-scroll:nth-child(2) { transition-delay: 0.3s; }
.hero-content .animate-on-scroll:nth-child(3) { transition-delay: 0.5s; }
.hero-content .animate-on-scroll:nth-child(4) { transition-delay: 0.7s; }
.hero-content .animate-on-scroll:nth-child(5) { transition-delay: 0.9s; }

/* ---- 响应式 ---- */
@media (max-width: 1024px) {
    .arch-pillars {
        grid-template-columns: repeat(2, 1fr);
    }

    .arch-foundation {
        grid-template-columns: 1fr;
    }

    .product-cards {
        grid-template-columns: repeat(2, 1fr);
    }

    .detail-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

    .detail-grid.reverse {
        direction: ltr;
    }

    .visual-card {
        height: 300px;
    }

    .demo-features {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .section {
        padding: var(--space-xl) 0;
    }

    .arch-pillars {
        grid-template-columns: 1fr;
    }

    /* 移动端导航 */
    .hamburger {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: rgba(10, 25, 41, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 100px var(--space-lg) var(--space-lg);
        gap: var(--space-xs);
        transition: right var(--transition-normal);
        box-shadow: -10px 0 30px rgba(0, 0, 0, 0.3);
    }

    .nav-links.active {
        right: 0;
    }

    .nav-link {
        font-size: var(--font-body);
        padding: var(--space-sm) 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        color: rgba(255, 255, 255, 0.8) !important;
    }

    .nav-link:hover {
        color: var(--primary-light) !important;
    }

    /* 移动端产品卡片 */
    .product-cards {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-sm);
    }

    .product-card {
        padding: var(--space-md) var(--space-sm);
    }

    /* 移动端Hero */
    .hero-products {
        gap: var(--space-sm);
    }

    .icon-glow {
        width: 44px;
        height: 44px;
    }

    .hero-product-icon span {
        font-size: var(--font-xs);
    }

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

    /* 移动端详情 */
    .detail-grid {
        grid-template-columns: 1fr;
    }

    .visual-card {
        height: 240px;
    }

    .openclaw-content {
        padding-left: var(--space-lg);
    }

    .quote-mark {
        font-size: 80px;
    }

    /* 移动端演示区 */
    .demo-features {
        grid-template-columns: 1fr;
    }

    .demo-card {
        padding: var(--space-lg) var(--space-md);
    }

    /* 移动端页脚 */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }
}

@media (max-width: 480px) {
    .product-cards {
        grid-template-columns: 1fr;
    }

    .hero-badge {
        font-size: var(--font-xs);
    }

    .floating-tag {
        font-size: var(--font-xs);
        padding: 6px 12px;
    }
}