/* ============================================
   THOMSON INDUSTRIES - 主题样式（亮色/暗色）
   ============================================ */

/* ---- CSS 变量（亮色默认） ---- */
:root {
    --bg-base: #ffffff;
    --bg-surface: #f6f8fa;
    --bg-elevated: #ffffff;
    --bg-card: #ffffff;

    --accent: #0969da;
    --accent-strong: #0550ae;
    --accent-soft: rgba(9, 105, 218, 0.08);
    --accent-border: rgba(9, 105, 218, 0.35);

    --text-primary: #1f2328;
    --text-secondary: #656d76;
    --text-muted: #8c959f;

    --border: rgba(31, 35, 40, 0.15);
    --border-hover: rgba(9, 105, 218, 0.5);

    --nav-bg: rgba(255, 255, 255, 0.85);
    --nav-bg-scrolled: rgba(255, 255, 255, 0.96);
    --footer-bg: #f6f8fa;
    --hero-bg-end: #f0f3f6;
    --hero-glow: rgba(9, 105, 218, 0.06);
    --lang-bg: rgba(31, 35, 40, 0.04);

    --nav-h: 64px;
    --max-w: 1200px;

    --radius: 6px;
    --radius-lg: 10px;

    --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-img: 0 4px 12px rgba(0, 0, 0, 0.08);
}

/* ---- 暗色主题 ---- */
[data-theme="dark"] {
    --bg-base: #0d1117;
    --bg-surface: #161b22;
    --bg-elevated: #1c232c;
    --bg-card: #161b22;

    --accent: #4d8dff;
    --accent-strong: #6ea3ff;
    --accent-soft: rgba(77, 141, 255, 0.10);
    --accent-border: rgba(77, 141, 255, 0.35);

    --text-primary: #e6edf3;
    --text-secondary: #97a3b5;
    --text-muted: #6e7681;

    --border: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(77, 141, 255, 0.45);

    --nav-bg: rgba(13, 17, 23, 0.85);
    --nav-bg-scrolled: rgba(13, 17, 23, 0.96);
    --footer-bg: #06090f;
    --hero-bg-end: #0a0e15;
    --hero-glow: rgba(77, 141, 255, 0.06);
    --lang-bg: rgba(255, 255, 255, 0.04);

    --shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
    --shadow-img: 0 4px 12px rgba(0, 0, 0, 0.3);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-h);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Microsoft YaHei", sans-serif;
    background: var(--bg-base);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

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

/* ---- 布局容器 ---- */
.container {
    width: 100%;
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 24px;
}

/* ---- 文本工具 ---- */
.text-accent {
    color: var(--accent);
}

/* ============================================
   导航栏
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-h);
    background: var(--nav-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    transition: background 0.3s ease, border-color 0.3s ease;
}

.navbar.scrolled {
    background: var(--nav-bg-scrolled);
    border-bottom-color: var(--border-hover);
}

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

/* Logo */
.logo {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 30px;
    width: auto;
    display: block;
    transition: opacity 0.2s ease;
}

/* 亮色模式 Logo（默认显示） */
.logo-img-light { display: block; }
.logo-img-dark { display: none; }
/* 暗色模式 Logo */
[data-theme="dark"] .logo-img-light { display: none; }
[data-theme="dark"] .logo-img-dark { display: block; }

.logo:hover .logo-img {
    opacity: 0.85;
}

/* 菜单 */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    position: relative;
    font-size: 14px;
    color: var(--text-secondary);
    padding: 8px 0;
    transition: color 0.2s ease;
}

.nav-link::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.25s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent);
}

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

/* 右侧操作区（主题切换 + 语言切换 + 菜单按钮） */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* 主题切换按钮 */
.theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    padding: 0;
    background: var(--lang-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.theme-toggle:hover {
    color: var(--accent);
    border-color: var(--border-hover);
}

.theme-toggle svg {
    width: 16px;
    height: 16px;
}

/* 默认显示太阳图标（亮色模式下），暗色模式显示月亮 */
.theme-toggle .icon-sun { display: block; }
.theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

/* 语言切换 */
.lang-switch {
    display: flex;
    align-items: center;
    gap: 2px;
    padding: 3px;
    background: var(--lang-bg);
    border: 1px solid var(--border);
    border-radius: 20px;
}

.lang-btn {
    min-width: 32px;
    padding: 4px 10px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    background: transparent;
    border: none;
    border-radius: 16px;
    cursor: pointer;
    transition: all 0.2s ease;
    line-height: 1.4;
}

.lang-btn:hover {
    color: var(--text-primary);
}

.lang-btn.active {
    background: var(--accent);
    color: #ffffff;
}

/* 移动菜单按钮 */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.nav-toggle.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ============================================
   Hero 区
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    padding-top: var(--nav-h);
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 50% 30%, var(--hero-glow) 0%, transparent 60%),
        linear-gradient(180deg, var(--bg-base) 0%, var(--hero-bg-end) 100%);
}

/* 顶部细线分隔 */
.hero-bg::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 1px;
    background: var(--border);
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-tag {
    display: inline-block;
    font-size: 12px;
    letter-spacing: 3px;
    color: var(--accent);
    padding: 6px 16px;
    border: 1px solid var(--border-hover);
    border-radius: 20px;
    background: var(--accent-soft);
    margin-bottom: 24px;
}

.hero-title {
    font-size: clamp(32px, 5vw, 56px);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero-desc {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 36px;
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.25s ease;
    border: 1px solid transparent;
}

.btn-primary {
    background: var(--accent);
    color: #ffffff;
}

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

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

.btn-outline:hover {
    border-color: var(--border-hover);
    color: var(--accent);
}

/* 滚动提示 */
.scroll-hint {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
}

.mouse {
    display: block;
    width: 24px;
    height: 38px;
    border: 2px solid var(--text-muted);
    border-radius: 14px;
    position: relative;
}

.wheel {
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--accent);
    border-radius: 2px;
    animation: scroll-wheel 1.6s ease-in-out infinite;
}

@keyframes scroll-wheel {
    0% { opacity: 1; transform: translate(-50%, 0); }
    100% { opacity: 0; transform: translate(-50%, 12px); }
}

/* ============================================
   通用 Section
   ============================================ */
.section {
    padding: 100px 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-label {
    display: block;
    font-size: 12px;
    letter-spacing: 4px;
    color: var(--accent);
    margin-bottom: 12px;
}

.section-title {
    font-size: clamp(26px, 3.5vw, 36px);
    font-weight: 700;
    margin-bottom: 16px;
}

.section-line {
    width: 48px;
    height: 2px;
    background: var(--accent);
    margin: 0 auto;
    border-radius: 2px;
}

/* ============================================
   公司简介
   ============================================ */
.about {
    background: var(--bg-surface);
}

.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 48px;
    align-items: start;
}

.about-heading {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 20px;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.9;
}

.about-stats {
    list-style: none;
    display: flex;
    gap: 40px;
    margin-top: 32px;
    padding-top: 32px;
    border-top: 1px solid var(--border);
}

.about-stats li {
    display: flex;
    flex-direction: column;
}

.about-stats strong {
    font-size: 32px;
    font-weight: 800;
    color: var(--accent);
    line-height: 1;
    margin-bottom: 6px;
}

.about-stats span {
    font-size: 13px;
    color: var(--text-muted);
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: all 0.25s ease;
}

.feature-card:hover {
    border-color: var(--border-hover);
    background: var(--bg-elevated);
}

.feature-icon {
    font-size: 14px;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 12px;
    letter-spacing: 2px;
}

.feature-card h4 {
    font-size: 16px;
    margin-bottom: 8px;
}

.feature-card p {
    font-size: 13px;
    color: var(--text-muted);
}

/* ============================================
   产品中心
   ============================================ */
.products {
    background: var(--bg-base);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.product-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    transition: border-color 0.25s ease, background 0.25s ease;
    position: relative;
    overflow: hidden;
}

.product-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.product-card:hover {
    border-color: var(--border-hover);
    background: var(--bg-elevated);
}

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

.product-icon {
    width: 48px;
    height: 48px;
    color: var(--accent);
    margin-bottom: 20px;
}

.product-icon svg {
    width: 100%;
    height: 100%;
}

.product-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
}

.product-card p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 16px;
}

.product-tag {
    display: inline-block;
    font-size: 11px;
    letter-spacing: 1px;
    color: var(--accent);
    padding: 4px 10px;
    background: var(--accent-soft);
    border-radius: 4px;
}

/* 强调卡片 */
.product-card--accent {
    background: var(--bg-elevated);
    border-color: var(--border-hover);
}

/* ============================================
   Featured 产品卡（带产品图与参数表，跨整行）
   ============================================ */
.product-card--featured {
    grid-column: 1 / -1;
    padding: 0;
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    background: var(--bg-card);
    border-color: var(--border-hover);
}

.product-image {
    position: relative;
    background: var(--bg-surface);
    overflow: hidden;
    min-height: 220px;
    padding: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-right: 1px solid var(--border);
}

.product-image img {
    position: relative;
    width: 100%;
    max-width: 200px;
    height: auto;
    object-fit: contain;
    filter: drop-shadow(var(--shadow-img));
}

.product-body {
    padding: 36px 32px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.product-head {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.product-head h3 {
    font-size: 22px;
    margin-bottom: 0;
}

.product-model {
    display: inline-block;
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
    font-size: 12px;
    font-weight: 600;
    color: var(--accent);
    padding: 4px 10px;
    background: var(--accent-soft);
    border: 1px solid var(--border-hover);
    border-radius: 4px;
    letter-spacing: 0.5px;
}

.product-body p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.75;
    margin-bottom: 20px;
}

/* 参数表 */
.product-specs {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px 24px;
    padding: 16px 0;
    margin-bottom: 20px;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.product-specs li {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.product-specs span {
    font-size: 11px;
    letter-spacing: 1px;
    color: var(--text-muted);
    text-transform: uppercase;
}

.product-specs strong {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

/* 多标签容器 */
.product-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

/* ============================================
   联系我们
   ============================================ */
.contact {
    background: var(--bg-surface);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 48px;
    align-items: stretch;
}

.contact-name {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 28px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}

.contact-item {
    margin-bottom: 24px;
}

.contact-label {
    display: block;
    font-size: 12px;
    letter-spacing: 2px;
    color: var(--accent);
    margin-bottom: 6px;
}

.contact-item p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.7;
}

.contact-cta {
    display: flex;
    align-items: center;
}

.cta-card {
    width: 100%;
    background: var(--bg-elevated);
    border: 1px solid var(--border-hover);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    text-align: center;
}

.cta-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
}

.cta-card p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.7;
}

/* ============================================
   页脚
   ============================================ */
.footer {
    background: var(--footer-bg);
    border-top: 1px solid var(--border);
    padding: 48px 0;
}

.footer-container {
    text-align: center;
}

.footer-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.footer-logo-img {
    height: 40px;
    width: auto;
}

.footer-info {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 20px;
}

.footer-copy {
    font-size: 12px;
    color: var(--text-muted);
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

/* ============================================
   响应式
   ============================================ */
@media (max-width: 968px) {
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }

    /* Featured 卡片在小屏改为纵向布局 */
    .product-card--featured {
        grid-template-columns: 1fr;
    }

    .product-image {
        min-height: 180px;
        border-right: none;
        border-bottom: 1px solid var(--border);
    }

    .product-image img {
        max-width: 220px;
    }

    .product-body {
        padding: 28px 24px;
    }

    .product-specs {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: var(--nav-h);
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--nav-bg-scrolled);
        backdrop-filter: blur(12px);
        padding: 24px;
        gap: 8px;
        border-bottom: 1px solid var(--border);
        transform: translateY(-150%);
        transition: transform 0.3s ease;
    }

    .nav-menu.open {
        transform: translateY(0);
    }

    .nav-link {
        width: 100%;
        padding: 12px 0;
    }

    .nav-toggle {
        display: flex;
    }

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

    .about-stats {
        gap: 24px;
    }
}

@media (max-width: 560px) {
    .section {
        padding: 64px 0;
    }

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

    /* 移动端语言切换按钮缩小 */
    .lang-btn {
        min-width: 28px;
        padding: 4px 8px;
        font-size: 11px;
    }

    .nav-actions {
        gap: 10px;
    }

    .hero-actions {
        flex-direction: column;
        width: 100%;
        max-width: 280px;
        margin: 0 auto;
    }

    .btn {
        width: 100%;
    }

    .about-stats {
        flex-wrap: wrap;
        gap: 20px;
    }
}

/* ============================================
   产品详情页
   ============================================ */
.product-detail {
    max-width: 1280px;
    margin: 0 auto;
    padding: 120px 32px 80px;
}

/* 面包屑 */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 40px;
}

.breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}

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

.breadcrumb .sep {
    opacity: 0.4;
}

.breadcrumb .current {
    color: var(--accent);
}

/* 详情页头部 */
.detail-header {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: 48px;
    align-items: center;
    padding: 48px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    margin-bottom: 64px;
}

.detail-image {
    background: var(--bg-surface);
    border-radius: 8px;
    padding: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 280px;
}

.detail-image img {
    width: 100%;
    max-width: 320px;
    height: auto;
    object-fit: contain;
    filter: drop-shadow(var(--shadow-img));
}

.detail-model {
    display: inline-block;
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
    font-size: 13px;
    font-weight: 600;
    color: var(--accent);
    padding: 5px 12px;
    background: var(--accent-soft);
    border: 1px solid var(--border-hover);
    border-radius: 4px;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
}

.detail-summary h1 {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}

.detail-tagline {
    font-size: 15px;
    color: var(--accent);
    margin-bottom: 24px;
    line-height: 1.6;
}

.detail-keypoints {
    list-style: none;
    margin-bottom: 28px;
}

.detail-keypoints li {
    position: relative;
    padding-left: 22px;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 2;
}

.detail-keypoints li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 14px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
}

.detail-cta {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 6px;
    transition: all 0.2s;
    cursor: pointer;
    border: 1px solid transparent;
}

.btn-primary {
    background: var(--accent);
    color: #ffffff;
}

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

.btn-ghost {
    background: transparent;
    color: var(--text-primary);
    border-color: var(--border-hover);
}

.btn-ghost:hover {
    background: var(--accent-soft);
    border-color: var(--accent);
}

/* 详情段落 */
.detail-section {
    margin-bottom: 64px;
}

.detail-section h2 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
    position: relative;
}

.detail-section h2::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -1px;
    width: 48px;
    height: 2px;
    background: var(--accent);
}

.detail-section p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.85;
    margin-bottom: 16px;
}

/* 特点网格 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    transition: all 0.2s;
}

.feature-item:hover {
    border-color: var(--border-hover);
    background: var(--bg-elevated);
}

.feature-num {
    font-family: "SFMono-Regular", Consolas, monospace;
    font-size: 20px;
    font-weight: 700;
    color: var(--accent);
    opacity: 0.6;
    flex-shrink: 0;
}

.feature-item p {
    margin: 0;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 规格表 */
.spec-table {
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
}

.spec-row {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 24px;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border);
    transition: background 0.15s;
}

.spec-row:last-child {
    border-bottom: none;
}

.spec-row:hover {
    background: var(--bg-elevated);
}

.spec-row--head {
    background: var(--bg-card);
    font-weight: 600;
    color: var(--text-primary);
}

.spec-row--head:hover {
    background: var(--bg-card);
}

.spec-row--accent {
    background: var(--accent-soft);
    border-left: 3px solid var(--accent);
}

.spec-row > div:first-child {
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 500;
}

.spec-row--head > div:first-child {
    color: var(--text-primary);
    font-size: 14px;
}

.spec-row > div:last-child {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.85;
}

/* 产品卡跳转链接 */
.product-link {
    display: inline-block;
    margin-top: 16px;
    font-size: 13px;
    font-weight: 600;
    color: var(--accent);
    text-decoration: none;
    transition: all 0.2s;
}

.product-link:hover {
    color: var(--accent-strong);
}

/* 底部 CTA */
.detail-cta-bottom {
    text-align: center;
    padding: 48px 32px;
    background: var(--bg-card);
    border: 1px solid var(--border-hover);
    border-radius: 12px;
}

.detail-cta-bottom h2 {
    font-size: 22px;
    color: var(--text-primary);
    margin-bottom: 12px;
    border: none;
    padding: 0;
}

.detail-cta-bottom h2::after {
    display: none;
}

.detail-cta-bottom p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.back-link {
    display: inline-block;
    margin-top: 16px;
    font-size: 13px;
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s;
}

.back-link:hover {
    color: var(--accent);
}

/* 详情页响应式 */
@media (max-width: 968px) {
    .product-detail {
        padding: 100px 24px 64px;
    }

    .detail-header {
        grid-template-columns: 1fr;
        padding: 32px;
        gap: 32px;
    }

    .detail-image {
        min-height: 220px;
    }

    .detail-summary h1 {
        font-size: 26px;
    }

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

    .spec-row {
        grid-template-columns: 1fr;
        gap: 6px;
    }

    .spec-row > div:first-child {
        font-size: 12px;
        text-transform: uppercase;
        letter-spacing: 1px;
    }
}

/* ============================================
   维护中页面
   ============================================ */
.maintenance-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: var(--nav-h);
    background:
        radial-gradient(ellipse at 50% 30%, rgba(77, 141, 255, 0.05) 0%, transparent 60%),
        var(--bg-base);
}

.maintenance-content {
    max-width: 560px;
}

.maintenance-icon {
    width: 72px;
    height: 72px;
    color: var(--accent);
    margin: 0 auto 32px;
}

.maintenance-icon svg {
    width: 100%;
    height: 100%;
}

.maintenance-title {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 700;
    margin-bottom: 20px;
}

.maintenance-desc {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 32px;
}