/* ============================================
   赋能行知&趣团建 — 主样式表
   主题色：橙色 #FF6B35
   设计：高大上 · 大字体 · 渐变 · 金属质感
   ============================================ */

/* ---------- CSS变量 ---------- */
:root {
    --orange:       #FF6B35;
    --orange-light:  #FF8C42;
    --orange-dark:   #E55A20;
    --orange-bg:     #FFF9F5;
    --dark:          #1A1A2E;
    --dark2:         #16213E;
    --text:          #333333;
    --text-light:    #666666;
    --white:         #FFFFFF;
    --gray-bg:       #F8F9FA;
    --gold:          #D4A847;
    --gold-light:    #F5E6C8;
    --shadow:        0 10px 40px rgba(0,0,0,0.08);
    --shadow-hover:  0 20px 60px rgba(255,107,53,0.15);
    --radius:        16px;
    --radius-sm:     10px;
    --transition:     all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', -apple-system, sans-serif;
    color: var(--text);
    background: var(--white);
    line-height: 1.7;
    overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ---------- 大字体高大上标题 ---------- */
.section-title {
    text-align: center;
    margin-bottom: 60px;
}
.section-title .en {
    font-size: 14px;
    letter-spacing: 6px;
    color: var(--orange);
    text-transform: uppercase;
    margin-bottom: 12px;
    font-weight: 600;
}
.section-title h2 {
    font-size: 48px;
    font-weight: 900;
    background: linear-gradient(135deg, var(--dark) 0%, var(--orange) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
    margin-bottom: 16px;
}
.section-title .sub {
    font-size: 18px;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* 金属渐变标题（用于Hero等核心位置） */
.metal-title {
    font-size: 64px;
    font-weight: 900;
    line-height: 1.1;
    background: linear-gradient(135deg, #FFFFFF 0%, #FFE0D0 25%, #FFFFFF 50%, #FFE0D0 75%, #FFFFFF 100%);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: metalShine 4s ease-in-out infinite;
}
@keyframes metalShine {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* ---------- 导航栏 ---------- */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    padding: 18px 0;
    transition: var(--transition);
}
.navbar.scrolled {
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(20px);
    box-shadow: 0 2px 30px rgba(0,0,0,0.08);
    padding: 12px 0;
}
.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.nav-logo {
    display: flex;
    align-items: center;
    position: relative;
    height: 60px;
}
.nav-logo .logo-img {
    height: 60px;
    width: auto;
    object-fit: contain;
    background: transparent;
    transition: var(--transition);
}
/* 默认显示白色logo（在深色背景的首页） */
.nav-logo .logo-dark { display: none; }
/* 滚动后白底导航栏：隐藏白色，显示橙色 */
.navbar.scrolled .nav-logo .logo-light { display: none; }
.navbar.scrolled .nav-logo .logo-dark { display: inline-block; }
.nav-links {
    display: flex;
    align-items: center;
    gap: 6px;
}
.nav-links a {
    padding: 8px 18px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    color: rgba(255,255,255,0.85);
    transition: var(--transition);
    position: relative;
}
.navbar.scrolled .nav-links a { color: var(--text); }
.nav-links a:hover,
.nav-links a.active {
    color: var(--white);
    background: rgba(255,255,255,0.15);
}
.navbar.scrolled .nav-links a:hover,
.navbar.scrolled .nav-links a.active {
    color: var(--orange);
    background: var(--orange-bg);
}
.nav-cta {
    background: var(--orange) !important;
    color: var(--white) !important;
    padding: 10px 24px !important;
    border-radius: 50px !important;
    font-weight: 700 !important;
    box-shadow: 0 4px 20px rgba(255,107,53,0.4);
}
.nav-cta:hover {
    background: var(--orange-dark) !important;
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(255,107,53,0.5);
}
/* 管理后台入口（小齿轮图标，低调处理，放在导航最末） */
.nav-admin {
    margin-left: 8px;
    padding: 6px 10px !important;
    font-size: 18px !important;
    color: rgba(255,255,255,0.4) !important;
    border-radius: 50% !important;
    line-height: 1;
}
.nav-admin:hover {
    color: var(--white) !important;
    background: rgba(255,255,255,0.1) !important;
    transform: rotate(90deg);
    transition: transform 0.4s ease;
}
.navbar.scrolled .nav-admin {
    color: rgba(0,0,0,0.3) !important;
}
.navbar.scrolled .nav-admin:hover {
    color: var(--orange) !important;
    background: var(--orange-bg) !important;
}

/* 手机导航 */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
}
.nav-toggle span {
    width: 26px;
    height: 3px;
    background: var(--white);
    border-radius: 3px;
    transition: var(--transition);
}
.navbar.scrolled .nav-toggle span { background: var(--dark); }

/* ---------- Hero 视频占位区 ---------- */
.hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.hero-bg {
    position: absolute;
    inset: 0;
    /* 视频占位：橙色渐变背景，后期换视频只需把这段替换成 <video> 标签 */
    background: linear-gradient(135deg, #1A1A2E 0%, #16213E 30%, #0F3460 60%, #FF6B35 100%);
    z-index: 0;
}
/* 视频占位动画背景（后期删除，换成 <video> 即可） */
.hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(255,107,53,0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(255,140,66,0.2) 0%, transparent 50%),
        radial-gradient(circle at 50% 100%, rgba(255,107,53,0.15) 0%, transparent 40%);
    animation: heroBgPulse 6s ease-in-out infinite;
}
@keyframes heroBgPulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.05); }
}
/* 粒子/光点装饰 */
.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(2px 2px at 10% 20%, rgba(255,255,255,0.8) 50%, transparent 50%),
        radial-gradient(2px 2px at 30% 70%, rgba(255,255,255,0.6) 50%, transparent 50%),
        radial-gradient(2px 2px at 50% 40%, rgba(255,255,255,0.7) 50%, transparent 50%),
        radial-gradient(2px 2px at 70% 80%, rgba(255,255,255,0.5) 50%, transparent 50%),
        radial-gradient(2px 2px at 90% 30%, rgba(255,255,255,0.9) 50%, transparent 50%),
        radial-gradient(1px 1px at 15% 90%, rgba(255,255,255,0.4) 50%, transparent 50%),
        radial-gradient(1px 1px at 85% 60%, rgba(255,255,255,0.3) 50%, transparent 50%);
    animation: twinkle 4s ease-in-out infinite alternate;
}
@keyframes twinkle {
    0% { opacity: 0.6; }
    100% { opacity: 1; }
}

/* Hero 视频轮播 */
.hero-video-wrapper {
    position: absolute;
    inset: 0;
    z-index: 1;
}
.hero-video-slide {
    position: absolute;
    inset: 0;
    object-fit: cover;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1.2s ease-in-out;
}
.hero-video-slide.active {
    opacity: 1;
}
/* 指示点 - 已隐藏 */
.hero-dots {
    display: none;
    position: absolute;
    bottom: 90px;
    left: 50%;
    transform: translateX(-50%);
    gap: 14px;
    z-index: 5;
}
.hero-dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: rgba(255,255,255,0.35);
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid rgba(255,255,255,0.5);
}
.hero-dot:hover {
    background: rgba(255,255,255,0.6);
}
.hero-dot.active {
    background: var(--orange);
    border-color: var(--orange-light);
    transform: scale(1.3);
    box-shadow: 0 0 12px rgba(255,107,53,0.6);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(26,26,46,0.5) 0%, rgba(26,26,46,0.3) 50%, rgba(26,26,46,0.7) 100%);
    z-index: 2;
}
.hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    color: var(--white);
    max-width: 900px;
    padding: 0 24px;
}
.hero-content .tag {
    display: inline-block;
    padding: 8px 24px;
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 50px;
    font-size: 14px;
    letter-spacing: 3px;
    margin-bottom: 30px;
    backdrop-filter: blur(10px);
    background: rgba(255,255,255,0.08);
    animation: fadeInUp 1s ease 0.2s both;
}
.hero-content h1 {
    font-size: 72px;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 24px;
    animation: fadeInUp 1s ease 0.4s both;
}
.hero-content h1 .highlight {
    background: linear-gradient(135deg, var(--orange-light) 0%, #FFE0D0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-content p {
    font-size: 20px;
    line-height: 1.8;
    color: rgba(255,255,255,0.85);
    margin-bottom: 48px;
    animation: fadeInUp 1s ease 0.6s both;
}
.hero-btns {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease 0.8s both;
}
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 40px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    text-decoration: none;
}
.btn-primary {
    background: linear-gradient(135deg, var(--orange) 0%, var(--orange-light) 100%);
    color: var(--white);
    box-shadow: 0 8px 30px rgba(255,107,53,0.4);
}
.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(255,107,53,0.5);
}
.btn-outline {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255,255,255,0.5);
}
.btn-outline:hover {
    background: rgba(255,255,255,0.15);
    border-color: var(--white);
    transform: translateY(-3px);
}

/* Hero底部滚动提示 */
.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    color: rgba(255,255,255,0.6);
    font-size: 13px;
    letter-spacing: 2px;
    animation: scrollBounce 2s ease-in-out infinite;
}
.hero-scroll::after {
    content: '';
    display: block;
    width: 24px;
    height: 40px;
    border: 2px solid rgba(255,255,255,0.4);
    border-radius: 12px;
    margin: 12px auto 0;
    position: relative;
}
.hero-scroll::before {
    content: '';
    position: absolute;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: rgba(255,255,255,0.6);
    border-radius: 2px;
    animation: scrollDot 2s ease-in-out infinite;
}
@keyframes scrollBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}
@keyframes scrollDot {
    0%, 100% { opacity: 1; transform: translateX(-50%) translateY(0); }
    50% { opacity: 0.3; transform: translateX(-50%) translateY(12px); }
}

/* ---------- 数据条 ---------- */
.data-bar {
    background: var(--dark);
    padding: 40px 0;
    position: relative;
    z-index: 10;
}
.data-bar .container {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 20px;
    text-align: center;
}
.data-item { color: var(--white); }
.data-item .num {
    display: block;
    font-size: 48px;
    font-weight: 900;
    background: linear-gradient(135deg, var(--orange) 0%, var(--orange-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 8px;
}
.data-item .label {
    font-size: 14px;
    color: rgba(255,255,255,0.6);
    letter-spacing: 1px;
}

/* ---------- 通用板块间距 ---------- */
.section {
    padding: 120px 0;
}
.section-dark {
    background: var(--dark);
    color: var(--white);
}
.section-gray {
    background: var(--gray-bg);
}

/* ---------- 精品课程（产品列表） ---------- */
.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.product-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: pointer;
}
.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}
.product-card .img {
    width: 100%;
    height: 240px;
    object-fit: cover;
    transition: transform 0.6s ease;
}
.product-card:hover .img {
    transform: scale(1.08);
}
.product-card .img-wrap {
    overflow: hidden;
    position: relative;
}
.product-card .tag {
    position: absolute;
    top: 16px;
    left: 16px;
    background: var(--orange);
    color: var(--white);
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
}
.product-card .body {
    padding: 24px;
}
.product-card h3 {
    font-size: 20px;
    font-weight: 800;
    margin-bottom: 8px;
    color: var(--dark);
}
.product-card .views {
    font-size: 13px;
    color: var(--text-light);
}

/* 产品分组（按小程序两级分类） */
.product-group {
    margin-bottom: 50px;
}
.group-title {
    font-size: 30px;
    font-weight: 900;
    color: var(--dark);
    margin: 30px 0 8px;
    padding-left: 16px;
    border-left: 6px solid var(--orange);
    line-height: 1.2;
}
.sub-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--orange);
    margin: 26px 0 18px;
}

/* ---------- 左侧分类侧边栏（点击筛选） ---------- */
.side-layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 36px;
    align-items: start;
}
.side-nav {
    position: sticky;
    top: 90px;
    background: var(--white);
    border-radius: 14px;
    padding: 16px 12px;
    box-shadow: 0 8px 30px rgba(0,0,0,.06);
    max-height: calc(100vh - 120px);
    overflow-y: auto;
}
.side-title {
    font-size: 15px;
    font-weight: 800;
    color: var(--dark);
    padding: 4px 12px 12px;
    border-bottom: 1px solid #f0f0f0;
    margin-bottom: 10px;
}
.side-item {
    display: block;
    padding: 11px 14px;
    border-radius: 10px;
    color: var(--text);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: .2s;
}
.side-item:hover { background: var(--gray-bg); color: var(--orange); }
.side-item.active { background: var(--orange); color: #fff; }
.side-group { margin-top: 4px; }
.side-parent {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 11px 14px;
    border: none;
    background: none;
    font-size: 15px;
    font-weight: 700;
    color: var(--dark);
    cursor: pointer;
    border-radius: 10px;
    font-family: inherit;
    transition: .2s;
}
.side-parent:hover { background: var(--gray-bg); color: var(--orange); }
.side-parent.active { color: var(--orange); }
.side-parent .arrow { color: #ccc; transition: transform .25s; font-size: 18px; line-height: 1; }
.side-group.open .side-parent .arrow { transform: rotate(90deg); color: var(--orange); }
.side-children { display: none; padding-left: 6px; }
.side-group.open .side-children { display: block; }
.side-sub {
    display: block;
    padding: 9px 14px 9px 24px;
    font-size: 14px;
    color: var(--text-light);
    border-radius: 8px;
    cursor: pointer;
    transition: .2s;
}
.side-sub:hover { color: var(--orange); background: var(--gray-bg); }
.side-sub.active { color: var(--orange); font-weight: 700; background: #FFF1E8; }
.content-area { min-width: 0; }
.content-head {
    display: flex;
    align-items: baseline;
    gap: 12px;
    margin-bottom: 24px;
}
.content-title { font-size: 24px; font-weight: 800; color: var(--dark); }
.content-count { color: var(--text-light); font-size: 14px; }
.empty-tip { padding: 70px 0; text-align: center; color: var(--text-light); font-size: 16px; }

/* 分类筛选 */
.filter-bar {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}
.filter-btn {
    padding: 10px 28px;
    border-radius: 50px;
    border: 2px solid #E0E0E0;
    background: var(--white);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text);
}
.filter-btn:hover,
.filter-btn.active {
    border-color: var(--orange);
    background: var(--orange);
    color: var(--white);
}

/* ---------- 客户案例 ---------- */
.case-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.case-card {
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--white);
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: pointer;
}
.case-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}
.case-card .img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    transition: transform 0.6s ease;
}
.case-card:hover .img {
    transform: scale(1.08);
}
.case-card .img-wrap {
    overflow: hidden;
    position: relative;
}
.case-card .tag {
    position: absolute;
    top: 16px;
    right: 16px;
    background: rgba(0,0,0,0.6);
    color: var(--white);
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 12px;
}
.case-card .body {
    padding: 20px;
}
.case-card h3 {
    font-size: 18px;
    font-weight: 800;
    margin-bottom: 8px;
}
.case-card .meta {
    display: flex;
    gap: 16px;
    font-size: 13px;
    color: var(--text-light);
}

/* ---------- 精选场地 ---------- */
.venue-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.venue-card {
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--white);
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: pointer;
}
.venue-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}
.venue-card .img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.6s ease;
}
.venue-card:hover .img {
    transform: scale(1.08);
}
.venue-card .img-wrap {
    overflow: hidden;
    position: relative;
}
.venue-card .rating {
    position: absolute;
    bottom: 12px;
    right: 12px;
    background: rgba(0,0,0,0.6);
    color: var(--white);
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 12px;
    backdrop-filter: blur(10px);
}
.venue-card .body {
    padding: 18px;
}
.venue-card h3 {
    font-size: 16px;
    font-weight: 800;
    margin-bottom: 6px;
}
.venue-card .loc {
    font-size: 13px;
    color: var(--text-light);
}

/* ---------- 荣誉证书 ---------- */
.cert-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.cert-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid #F0F0F0;
}
.cert-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
    border-color: var(--orange);
}
.cert-img {
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #FFF6F0 0%, #FFE9DC 100%);
    overflow: hidden;
}
.cert-img img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 8px;
    box-sizing: border-box;
}
.cert-name {
    text-align: center;
    padding: 14px;
    font-size: 14px;
    font-weight: 700;
    color: var(--dark);
    min-height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1.4;
}

/* ---------- 关于我们 ---------- */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}
.about-img {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}
.about-img img {
    width: 100%;
    height: 500px;
    object-fit: cover;
}
.about-text h2 {
    font-size: 48px;
    font-weight: 900;
    margin-bottom: 24px;
    background: linear-gradient(135deg, var(--dark) 0%, var(--orange) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.about-text p {
    font-size: 17px;
    line-height: 2;
    color: var(--text-light);
    margin-bottom: 20px;
}
.about-features {
    margin-top: 32px;
}
.about-feature {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 0;
    border-bottom: 1px solid #F0F0F0;
    font-size: 16px;
    font-weight: 600;
}
.about-feature .icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--orange) 0%, var(--orange-light) 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 16px;
    flex-shrink: 0;
}

/* ---------- 精彩视频 ---------- */
.video-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.video-card {
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--white);
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: pointer;
}
.video-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}
.video-card .thumb {
    width: 100%;
    height: 220px;
    object-fit: cover;
    position: relative;
    background-size: cover;
    background-position: center;
}
.video-card .play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(255,107,53,0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 24px;
    backdrop-filter: blur(10px);
    transition: var(--transition);
    z-index: 2;
}
.video-card:hover .play-btn {
    transform: translate(-50%, -50%) scale(1.1);
    background: var(--orange);
}
.video-card .body {
    padding: 20px;
}
.video-card h3 {
    font-size: 17px;
    font-weight: 700;
}
.video-card .meta {
    margin-top: 8px;
    font-size: 13px;
    color: var(--text-light);
}
.hd-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    background: linear-gradient(135deg, #FF6B35, #FF8B5A);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(255,107,53,0.4);
    letter-spacing: 0.5px;
    z-index: 2;
}

/* ---------- 视频弹窗播放 ---------- */
.video-lightbox {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.92);
    z-index: 9999;
    align-items: center;
    justify-content: center;
    padding: 40px;
}
.video-lightbox.active {
    display: flex;
}
.video-lightbox .close-btn {
    position: absolute;
    top: 20px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: rgba(255,255,255,0.1);
    color: white;
    font-size: 32px;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}
.video-lightbox .close-btn:hover {
    background: var(--orange);
    transform: rotate(90deg);
}
.video-lightbox video {
    max-width: 90vw;
    max-height: 85vh;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

/* ---------- 联系我们 ---------- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}
.contact-info h2 {
    font-size: 48px;
    font-weight: 900;
    margin-bottom: 24px;
    background: linear-gradient(135deg, var(--dark) 0%, var(--orange) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.contact-info p {
    font-size: 17px;
    color: var(--text-light);
    margin-bottom: 32px;
    line-height: 2;
}
.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
    font-size: 16px;
}
.contact-item .icon {
    width: 48px;
    height: 48px;
    background: var(--orange-bg);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}
.contact-form {
    background: var(--white);
    padding: 48px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}
.contact-form h3 {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 32px;
    color: var(--dark);
}
.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text);
}
.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid #E8E8E8;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-family: inherit;
    transition: var(--transition);
    background: var(--white);
    color: var(--text);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--orange);
    box-shadow: 0 0 0 4px rgba(255,107,53,0.1);
}
.form-group textarea { min-height: 120px; resize: vertical; }
.form-submit {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, var(--orange) 0%, var(--orange-light) 100%);
    color: var(--white);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 17px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}
.form-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(255,107,53,0.4);
}

/* ---------- 页脚 ---------- */
.footer {
    background: var(--dark);
    color: rgba(255,255,255,0.7);
    padding: 80px 0 30px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}
.footer-brand h3 {
    font-size: 24px;
    font-weight: 900;
    color: var(--white);
    margin-bottom: 16px;
}
.footer-brand p {
    font-size: 14px;
    line-height: 2;
    color: rgba(255,255,255,0.5);
}
.footer h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 24px;
}
.footer-links a {
    display: block;
    padding: 6px 0;
    font-size: 14px;
    color: rgba(255,255,255,0.5);
    transition: var(--transition);
}
.footer-links a:hover { color: var(--orange-light); }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 30px;
    text-align: center;
    font-size: 13px;
    color: rgba(255,255,255,0.3);
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
    background: var(--gray-bg);
    padding: 20px 0;
    font-size: 14px;
    color: var(--text-light);
}
.breadcrumb a { color: var(--orange); }

/* ---------- 分页 ---------- */
.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 50px;
}
.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    transition: var(--transition);
    border: 2px solid #E0E0E0;
    color: var(--text);
}
.pagination a:hover,
.pagination .current {
    background: var(--orange);
    color: var(--white);
    border-color: var(--orange);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
    .product-grid,
    .case-grid,
    .video-grid { grid-template-columns: repeat(2, 1fr); }
    .venue-grid { grid-template-columns: repeat(2, 1fr); }
    .cert-grid { grid-template-columns: repeat(3, 1fr); }
    .data-bar .container { grid-template-columns: repeat(4, 1fr); }
    .about-grid,
    .contact-grid { grid-template-columns: 1fr; gap: 40px; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
    .side-layout { grid-template-columns: 1fr; gap: 20px; }
    .side-nav {
        position: static;
        max-height: none;
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        padding: 14px;
    }
    .side-title { width: 100%; border-bottom: none; padding: 0 4px 6px; margin-bottom: 4px; }
    .side-item { padding: 9px 16px; font-size: 14px; }
    .side-group { width: 100%; }
    .side-parent { width: 100%; }
    .side-children { padding-left: 0; }
}
@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-links.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%; left: 0; right: 0;
        background: var(--white);
        padding: 20px;
        box-shadow: var(--shadow);
        border-radius: 0 0 var(--radius) var(--radius);
    }
    .nav-links.open a { color: var(--text); }
    .nav-toggle { display: flex; }
    .hero-content h1 { font-size: 42px; }
    .metal-title { font-size: 42px; }
    .section-title h2 { font-size: 32px; }
    .section { padding: 80px 0; }
    .product-grid,
    .case-grid,
    .video-grid,
    .venue-grid { grid-template-columns: 1fr; }
    .cert-grid { grid-template-columns: repeat(2, 1fr); }
    .data-bar .container { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-links.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%; left: 0; right: 0;
        background: var(--white);
        padding: 20px;
        box-shadow: var(--shadow);
        border-radius: 0 0 var(--radius) var(--radius);
    }
    .nav-links.open a { color: var(--text); }
    .nav-toggle { display: flex; }
    .hero-content h1 { font-size: 42px; }
    .metal-title { font-size: 42px; }
    .section-title h2 { font-size: 32px; }
    .section { padding: 80px 0; }
    .product-grid,
    .case-grid,
    .video-grid,
    .venue-grid { grid-template-columns: 1fr; }
    .cert-grid { grid-template-columns: repeat(2, 1fr); }
    .data-bar .container { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr; }
}

/* ---------- 页面横幅（子页面用） ---------- */
.page-banner {
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark2) 100%);
    padding: 180px 0 100px;
    text-align: center;
    color: var(--white);
    position: relative;
    overflow: hidden;
}
.page-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(255,107,53,0.2) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(255,140,66,0.15) 0%, transparent 50%);
}
.page-banner h1 {
    font-size: 56px;
    font-weight: 900;
    margin-bottom: 16px;
    position: relative;
}
.page-banner p {
    font-size: 18px;
    color: rgba(255,255,255,0.7);
    position: relative;
}


/* ===================== 详情页 ===================== */
a.product-card, a.case-card, a.venue-card { display:block; text-decoration:none; color:inherit; }

.detail-hero {
    position: relative;
    min-height: 420px;
    display: flex;
    align-items: flex-end;
    background-size: cover;
    background-position: center;
    padding: 150px 0 60px;
}
.detail-hero-mask {
    position: absolute; inset: 0;
    background: linear-gradient(180deg, rgba(26,26,46,0.25) 0%, rgba(26,26,46,0.78) 100%);
}
.detail-hero-inner { position: relative; z-index: 2; }
.detail-hero .detail-tag {
    display: inline-block;
    background: var(--orange); color: #fff;
    padding: 6px 18px; border-radius: 20px;
    font-size: 14px; font-weight: 700; margin-bottom: 16px;
}
.detail-hero h1 {
    color: #fff; font-size: 44px; font-weight: 900;
    text-shadow: 0 4px 20px rgba(0,0,0,0.4);
}

.detail-layout {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 40px;
    align-items: start;
}
.detail-main { display: flex; flex-direction: column; gap: 28px; }
.detail-card {
    background: #fff; border-radius: var(--radius);
    box-shadow: var(--shadow); padding: 36px;
}
.detail-h { font-size: 26px; font-weight: 800; color: var(--dark); margin-bottom: 18px; }
.detail-h.center { text-align: center; margin-bottom: 36px; }
.detail-p { font-size: 16px; line-height: 2; color: var(--text-light); margin-bottom: 14px; }
.detail-points { list-style: none; display: flex; flex-direction: column; gap: 14px; }
.detail-points li {
    position: relative; padding-left: 28px;
    font-size: 15px; line-height: 1.8; color: var(--text-light);
}
.detail-points li::before {
    content: "✓"; position: absolute; left: 0; top: 0;
    color: var(--orange); font-weight: 900;
}
.detail-points strong { color: var(--dark); }

.detail-side { position: sticky; top: 100px; }
.side-card { padding: 28px; }
.side-h { font-size: 18px; font-weight: 800; color: var(--dark); margin-bottom: 16px; }
.meta-row {
    display: flex; justify-content: space-between; gap: 12px;
    padding: 12px 0; border-bottom: 1px dashed #eee;
    font-size: 14px;
}
.meta-row:last-of-type { border-bottom: none; }
.meta-k { color: var(--text-light); }
.meta-v { color: var(--dark); font-weight: 700; text-align: right; }
.btn-detail-cta {
    display: block; text-align: center; margin-top: 22px;
    background: var(--orange); color: #fff; text-decoration: none;
    padding: 14px; border-radius: var(--radius-sm); font-weight: 700;
    transition: var(--transition);
}
.btn-detail-cta:hover { background: var(--orange-dark); }

.rel-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.rel-card {
    background: #fff; border-radius: var(--radius-sm); overflow: hidden;
    box-shadow: var(--shadow); text-decoration: none; color: inherit;
    transition: var(--transition); display: block;
}
.rel-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.rel-img { height: 160px; overflow: hidden; }
.rel-img img { width: 100%; height: 100%; object-fit: cover; }
.rel-body { padding: 16px; }
.rel-body h4 { font-size: 15px; font-weight: 700; color: var(--dark); margin-bottom: 6px;
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.rel-cat { font-size: 12px; color: var(--orange); font-weight: 700; }

.cta-banner {
    background: linear-gradient(120deg, var(--dark) 0%, var(--dark2) 100%);
    color: #fff; padding: 60px 0;
}
.cta-inner {
    display: flex; align-items: center; justify-content: space-between;
    gap: 30px; flex-wrap: wrap;
}
.cta-inner h2 { font-size: 30px; font-weight: 800; margin-bottom: 10px; }
.cta-inner p { color: rgba(255,255,255,0.7); font-size: 16px; }
.btn-cta {
    background: var(--orange); color: #fff; text-decoration: none;
    padding: 16px 40px; border-radius: 30px; font-weight: 800; font-size: 16px;
    transition: var(--transition); white-space: nowrap;
}
.btn-cta:hover { background: var(--orange-light); transform: translateY(-3px); }

@media (max-width: 900px) {
    .detail-layout { grid-template-columns: 1fr; }
    .detail-side { position: static; }
    .rel-grid { grid-template-columns: repeat(2, 1fr); }
    .detail-hero h1 { font-size: 32px; }
}

/* =========================================================
   列表页与详情页重构样式（2026-07-13）
   ========================================================= */
.page-banner {
    background: linear-gradient(135deg, #FF6B35 0%, #F7931E 100%);
    color: #fff;
    padding: 120px 0 70px;
    text-align: center;
}
.page-banner h1 {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: 1px;
}
.page-banner p {
    font-size: 17px;
    opacity: .95;
    max-width: 760px;
    margin: 0 auto;
    line-height: 1.7;
}

.side-layout-inner {
    display: flex;
    gap: 34px;
    align-items: flex-start;
    padding-top: 50px;
    padding-bottom: 70px;
}
.side-nav {
    width: 240px;
    flex-shrink: 0;
    position: sticky;
    top: 100px;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 8px 30px rgba(0,0,0,.06);
    padding: 22px;
    max-height: calc(100vh - 130px);
    overflow-y: auto;
}
.side-title {
    font-size: 16px;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 2px solid #FF6B35;
}
.side-menu { list-style: none; }
.side-group { margin-bottom: 10px; }
.side-parent {
    display: block;
    font-weight: 700;
    color: #333;
    padding: 10px 0 6px;
    font-size: 15px;
}
.side-sub { padding-left: 12px; border-left: 2px solid #f0f0f0; margin: 4px 0 8px; }
.side-item {
    padding: 8px 12px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    color: #555;
    transition: all .2s;
    margin-bottom: 4px;
}
.side-item:hover, .side-item.active {
    background: #FFF3ED;
    color: #FF6B35;
    font-weight: 600;
}

.content-area { flex: 1; min-width: 0; }
.items-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 26px;
}
.card-link { text-decoration: none; color: inherit; display: block; }
.item-card {
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 6px 22px rgba(0,0,0,.07);
    transition: transform .25s, box-shadow .25s;
    height: 100%;
}
.item-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 14px 40px rgba(255,107,53,.18);
}
.card-img-wrap {
    position: relative;
    padding-bottom: 66%;
    background: #f5f5f5;
    overflow: hidden;
}
.card-img-wrap img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .4s;
}
.item-card:hover .card-img-wrap img { transform: scale(1.06); }
.card-body { padding: 18px 20px 22px; }
.card-badge {
    display: inline-block;
    background: #FFF3ED;
    color: #FF6B35;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 20px;
    margin-bottom: 10px;
}
.card-title {
    font-size: 17px;
    font-weight: 700;
    color: #1a1a1a;
    line-height: 1.45;
    margin-bottom: 10px;
    min-height: 48px;
}
.card-meta {
    font-size: 13px;
    color: #888;
}

/* 详情页 */
.detail-hero {
    position: relative;
    height: 420px;
    display: flex;
    align-items: flex-end;
    overflow: hidden;
}
.detail-hero-img {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
}
.detail-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,.72) 0%, rgba(0,0,0,.2) 60%, rgba(0,0,0,.1) 100%);
}
.detail-hero-content {
    position: relative;
    z-index: 2;
    color: #fff;
    padding-bottom: 50px;
}
.detail-hero-content h1 {
    font-size: 38px;
    font-weight: 800;
    max-width: 860px;
    line-height: 1.25;
    text-shadow: 0 2px 10px rgba(0,0,0,.3);
}
.breadcrumb {
    font-size: 14px;
    margin-bottom: 14px;
    opacity: .9;
}
.breadcrumb a { color: #fff; text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb span { margin: 0 8px; }

.detail-layout-inner {
    display: flex;
    gap: 34px;
    padding-top: 50px;
    padding-bottom: 70px;
    align-items: flex-start;
}
.detail-main { flex: 1; min-width: 0; }
.detail-side {
    width: 300px;
    flex-shrink: 0;
    position: sticky;
    top: 100px;
}
.detail-card {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 6px 26px rgba(0,0,0,.06);
    padding: 30px;
    margin-bottom: 28px;
}
.detail-card h2 {
    font-size: 22px;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid #FF6B35;
    display: inline-block;
}
.detail-card h3 {
    font-size: 17px;
    font-weight: 700;
    color: #333;
    margin: 22px 0 10px;
}
.detail-card p {
    color: #555;
    line-height: 1.85;
    margin-bottom: 12px;
}
.detail-card ul { padding-left: 20px; color: #555; line-height: 1.9; }
.detail-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 14px 28px;
    margin-bottom: 22px;
    padding: 16px 18px;
    background: #fafafa;
    border-radius: 12px;
    font-size: 14px;
    color: #444;
}
.detail-meta strong { color: #1a1a1a; }
.why-list { list-style: none; padding: 0; }
.why-list li {
    position: relative;
    padding-left: 28px;
    margin-bottom: 12px;
    color: #444;
    line-height: 1.7;
}
.why-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 6px;
    width: 16px;
    height: 16px;
    background: #2E9C7C;
    border-radius: 50%;
}
.why-list li::after {
    content: '';
    position: absolute;
    left: 5px;
    top: 10px;
    width: 6px;
    height: 3px;
    border-left: 2px solid #fff;
    border-bottom: 2px solid #fff;
    transform: rotate(-45deg);
}
.rel-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
}
.rel-card {
    display: block;
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 14px rgba(0,0,0,.06);
    text-decoration: none;
    color: #333;
    transition: transform .2s;
}
.rel-card:hover { transform: translateY(-4px); }
.rel-card img {
    width: 100%;
    height: 120px;
    object-fit: cover;
    display: block;
}
.rel-card span {
    display: block;
    padding: 12px 14px;
    font-size: 14px;
    font-weight: 600;
    line-height: 1.4;
}
.side-box {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 6px 26px rgba(0,0,0,.06);
    padding: 24px;
    margin-bottom: 22px;
}
.side-box h4 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 16px;
    color: #1a1a1a;
}
.rel-mini {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid #f2f2f2;
    text-decoration: none;
    color: #444;
    font-size: 14px;
    transition: color .2s;
}
.rel-mini:last-child { border-bottom: none; }
.rel-mini:hover { color: #FF6B35; }
.rel-mini img {
    width: 56px;
    height: 42px;
    object-fit: cover;
    border-radius: 6px;
    flex-shrink: 0;
}
.cta-box { background: linear-gradient(135deg, #FF6B35 0%, #F7931E 100%); color: #fff; }
.cta-box h4, .cta-box p { color: #fff; }
.cta-box p { font-size: 14px; line-height: 1.7; opacity: .95; margin-bottom: 16px; }
.btn-orange {
    display: inline-block;
    background: #fff;
    color: #FF6B35;
    font-weight: 700;
    padding: 12px 28px;
    border-radius: 30px;
    text-decoration: none;
    transition: transform .2s, box-shadow .2s;
}
.btn-orange:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0,0,0,.15); }

@media (max-width: 1024px) {
    .items-grid { grid-template-columns: repeat(2, 1fr); }
    .side-layout-inner, .detail-layout-inner { flex-direction: column; }
    .side-nav, .detail-side { width: 100%; position: static; }
    .detail-hero-content h1 { font-size: 28px; }
}
@media (max-width: 640px) {
    .items-grid { grid-template-columns: 1fr; }
    .rel-grid { grid-template-columns: 1fr; }
    .detail-meta { flex-direction: column; gap: 8px; }
}

/* =========================================================
   列表页与详情页重构样式（2026-07-13）
   ========================================================= */
.page-banner {
    background: linear-gradient(135deg, #FF6B35 0%, #F7931E 100%);
    color: #fff;
    padding: 120px 0 70px;
    text-align: center;
}
.page-banner h1 {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: 1px;
}
.page-banner p {
    font-size: 17px;
    opacity: .95;
    max-width: 760px;
    margin: 0 auto;
    line-height: 1.7;
}

.side-layout-inner {
    display: flex;
    gap: 34px;
    align-items: flex-start;
    padding-top: 50px;
    padding-bottom: 70px;
}
.side-nav {
    width: 240px;
    flex-shrink: 0;
    position: sticky;
    top: 100px;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 8px 30px rgba(0,0,0,.06);
    padding: 22px;
    max-height: calc(100vh - 130px);
    overflow-y: auto;
}
.side-title {
    font-size: 16px;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 2px solid #FF6B35;
}
.side-menu { list-style: none; }
.side-group { margin-bottom: 10px; }
.side-parent {
    display: block;
    font-weight: 700;
    color: #333;
    padding: 10px 0 6px;
    font-size: 15px;
}
.side-sub { padding-left: 12px; border-left: 2px solid #f0f0f0; margin: 4px 0 8px; }
.side-item {
    padding: 8px 12px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    color: #555;
    transition: all .2s;
    margin-bottom: 4px;
}
.side-item:hover, .side-item.active {
    background: #FFF3ED;
    color: #FF6B35;
    font-weight: 600;
}

.content-area { flex: 1; min-width: 0; }
.items-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 26px;
}
.card-link { text-decoration: none; color: inherit; display: block; }
.item-card {
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 6px 22px rgba(0,0,0,.07);
    transition: transform .25s, box-shadow .25s;
    height: 100%;
}
.item-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 14px 40px rgba(255,107,53,.18);
}
.card-img-wrap {
    position: relative;
    padding-bottom: 66%;
    background: #f5f5f5;
    overflow: hidden;
}
.card-img-wrap img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .4s;
}
.item-card:hover .card-img-wrap img { transform: scale(1.06); }
.card-body { padding: 18px 20px 22px; }
.card-badge {
    display: inline-block;
    background: #FFF3ED;
    color: #FF6B35;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 20px;
    margin-bottom: 10px;
}
.card-title {
    font-size: 17px;
    font-weight: 700;
    color: #1a1a1a;
    line-height: 1.45;
    margin-bottom: 10px;
    min-height: 48px;
}
.card-meta {
    font-size: 13px;
    color: #888;
}

/* 详情页 */
.detail-hero {
    position: relative;
    height: 420px;
    display: flex;
    align-items: flex-end;
    overflow: hidden;
}
.detail-hero-img {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
}
.detail-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,.72) 0%, rgba(0,0,0,.2) 60%, rgba(0,0,0,.1) 100%);
}
.detail-hero-content {
    position: relative;
    z-index: 2;
    color: #fff;
    padding-bottom: 50px;
}
.detail-hero-content h1 {
    font-size: 38px;
    font-weight: 800;
    max-width: 860px;
    line-height: 1.25;
    text-shadow: 0 2px 10px rgba(0,0,0,.3);
}
.breadcrumb {
    font-size: 14px;
    margin-bottom: 14px;
    opacity: .9;
}
.breadcrumb a { color: #fff; text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb span { margin: 0 8px; }

.detail-layout-inner {
    display: flex;
    gap: 34px;
    padding-top: 50px;
    padding-bottom: 70px;
    align-items: flex-start;
}
.detail-main { flex: 1; min-width: 0; }
.detail-side {
    width: 300px;
    flex-shrink: 0;
    position: sticky;
    top: 100px;
}
.detail-card {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 6px 26px rgba(0,0,0,.06);
    padding: 30px;
    margin-bottom: 28px;
}
.detail-card h2 {
    font-size: 22px;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid #FF6B35;
    display: inline-block;
}
.detail-card h3 {
    font-size: 17px;
    font-weight: 700;
    color: #333;
    margin: 22px 0 10px;
}
.detail-card p {
    color: #555;
    line-height: 1.85;
    margin-bottom: 12px;
}
.detail-card ul { padding-left: 20px; color: #555; line-height: 1.9; }
.detail-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 14px 28px;
    margin-bottom: 22px;
    padding: 16px 18px;
    background: #fafafa;
    border-radius: 12px;
    font-size: 14px;
    color: #444;
}
.detail-meta strong { color: #1a1a1a; }
.why-list { list-style: none; padding: 0; }
.why-list li {
    position: relative;
    padding-left: 28px;
    margin-bottom: 12px;
    color: #444;
    line-height: 1.7;
}
.why-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 6px;
    width: 16px;
    height: 16px;
    background: #2E9C7C;
    border-radius: 50%;
}
.why-list li::after {
    content: '';
    position: absolute;
    left: 5px;
    top: 10px;
    width: 6px;
    height: 3px;
    border-left: 2px solid #fff;
    border-bottom: 2px solid #fff;
    transform: rotate(-45deg);
}
.rel-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
}
.rel-card {
    display: block;
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 14px rgba(0,0,0,.06);
    text-decoration: none;
    color: #333;
    transition: transform .2s;
}
.rel-card:hover { transform: translateY(-4px); }
.rel-card img {
    width: 100%;
    height: 120px;
    object-fit: cover;
    display: block;
}
.rel-card span {
    display: block;
    padding: 12px 14px;
    font-size: 14px;
    font-weight: 600;
    line-height: 1.4;
}
.side-box {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 6px 26px rgba(0,0,0,.06);
    padding: 24px;
    margin-bottom: 22px;
}
.side-box h4 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 16px;
    color: #1a1a1a;
}
.rel-mini {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid #f2f2f2;
    text-decoration: none;
    color: #444;
    font-size: 14px;
    transition: color .2s;
}
.rel-mini:last-child { border-bottom: none; }
.rel-mini:hover { color: #FF6B35; }
.rel-mini img {
    width: 56px;
    height: 42px;
    object-fit: cover;
    border-radius: 6px;
    flex-shrink: 0;
}
.cta-box { background: linear-gradient(135deg, #FF6B35 0%, #F7931E 100%); color: #fff; }
.cta-box h4, .cta-box p { color: #fff; }
.cta-box p { font-size: 14px; line-height: 1.7; opacity: .95; margin-bottom: 16px; }
.btn-orange {
    display: inline-block;
    background: #fff;
    color: #FF6B35;
    font-weight: 700;
    padding: 12px 28px;
    border-radius: 30px;
    text-decoration: none;
    transition: transform .2s, box-shadow .2s;
}
.btn-orange:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0,0,0,.15); }

@media (max-width: 1024px) {
    .items-grid { grid-template-columns: repeat(2, 1fr); }
    .side-layout-inner, .detail-layout-inner { flex-direction: column; }
    .side-nav, .detail-side { width: 100%; position: static; }
    .detail-hero-content h1 { font-size: 28px; }
}
@media (max-width: 640px) {
    .items-grid { grid-template-columns: 1fr; }
    .rel-grid { grid-template-columns: 1fr; }
    .detail-meta { flex-direction: column; gap: 8px; }
}

/* =========================================================
   列表页与详情页重构样式（2026-07-13）
   ========================================================= */
.page-banner {
    background: linear-gradient(135deg, #FF6B35 0%, #F7931E 100%);
    color: #fff;
    padding: 120px 0 70px;
    text-align: center;
}
.page-banner h1 {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: 1px;
}
.page-banner p {
    font-size: 17px;
    opacity: .95;
    max-width: 760px;
    margin: 0 auto;
    line-height: 1.7;
}

.side-layout-inner {
    display: flex;
    gap: 34px;
    align-items: flex-start;
    padding-top: 50px;
    padding-bottom: 70px;
}
.side-nav {
    width: 240px;
    flex-shrink: 0;
    position: sticky;
    top: 100px;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 8px 30px rgba(0,0,0,.06);
    padding: 22px;
    max-height: calc(100vh - 130px);
    overflow-y: auto;
}
.side-title {
    font-size: 16px;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 2px solid #FF6B35;
}
.side-menu { list-style: none; }
.side-group { margin-bottom: 10px; }
.side-parent {
    display: block;
    font-weight: 700;
    color: #333;
    padding: 10px 0 6px;
    font-size: 15px;
}
.side-sub { padding-left: 12px; border-left: 2px solid #f0f0f0; margin: 4px 0 8px; }
.side-item {
    padding: 8px 12px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    color: #555;
    transition: all .2s;
    margin-bottom: 4px;
}
.side-item:hover, .side-item.active {
    background: #FFF3ED;
    color: #FF6B35;
    font-weight: 600;
}

.content-area { flex: 1; min-width: 0; }
.items-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 26px;
}
.card-link { text-decoration: none; color: inherit; display: block; }
.item-card {
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 6px 22px rgba(0,0,0,.07);
    transition: transform .25s, box-shadow .25s;
    height: 100%;
}
.item-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 14px 40px rgba(255,107,53,.18);
}
.card-img-wrap {
    position: relative;
    padding-bottom: 66%;
    background: #f5f5f5;
    overflow: hidden;
}
.card-img-wrap img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .4s;
}
.item-card:hover .card-img-wrap img { transform: scale(1.06); }
.card-body { padding: 18px 20px 22px; }
.card-badge {
    display: inline-block;
    background: #FFF3ED;
    color: #FF6B35;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 20px;
    margin-bottom: 10px;
}
.card-title {
    font-size: 17px;
    font-weight: 700;
    color: #1a1a1a;
    line-height: 1.45;
    margin-bottom: 10px;
    min-height: 48px;
}
.card-meta {
    font-size: 13px;
    color: #888;
}

/* 详情页 */
.detail-hero {
    position: relative;
    height: 420px;
    display: flex;
    align-items: flex-end;
    overflow: hidden;
}
.detail-hero-img {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
}
.detail-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,.72) 0%, rgba(0,0,0,.2) 60%, rgba(0,0,0,.1) 100%);
}
.detail-hero-content {
    position: relative;
    z-index: 2;
    color: #fff;
    padding-bottom: 50px;
}
.detail-hero-content h1 {
    font-size: 38px;
    font-weight: 800;
    max-width: 860px;
    line-height: 1.25;
    text-shadow: 0 2px 10px rgba(0,0,0,.3);
}
.breadcrumb {
    font-size: 14px;
    margin-bottom: 14px;
    opacity: .9;
}
.breadcrumb a { color: #fff; text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb span { margin: 0 8px; }

.detail-layout-inner {
    display: flex;
    gap: 34px;
    padding-top: 50px;
    padding-bottom: 70px;
    align-items: flex-start;
}
.detail-main { flex: 1; min-width: 0; }
.detail-side {
    width: 300px;
    flex-shrink: 0;
    position: sticky;
    top: 100px;
}
.detail-card {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 6px 26px rgba(0,0,0,.06);
    padding: 30px;
    margin-bottom: 28px;
}
.detail-card h2 {
    font-size: 22px;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid #FF6B35;
    display: inline-block;
}
.detail-card h3 {
    font-size: 17px;
    font-weight: 700;
    color: #333;
    margin: 22px 0 10px;
}
.detail-card p {
    color: #555;
    line-height: 1.85;
    margin-bottom: 12px;
}
.detail-card ul { padding-left: 20px; color: #555; line-height: 1.9; }
.detail-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 14px 28px;
    margin-bottom: 22px;
    padding: 16px 18px;
    background: #fafafa;
    border-radius: 12px;
    font-size: 14px;
    color: #444;
}
.detail-meta strong { color: #1a1a1a; }
.why-list { list-style: none; padding: 0; }
.why-list li {
    position: relative;
    padding-left: 28px;
    margin-bottom: 12px;
    color: #444;
    line-height: 1.7;
}
.why-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 6px;
    width: 16px;
    height: 16px;
    background: #2E9C7C;
    border-radius: 50%;
}
.why-list li::after {
    content: '';
    position: absolute;
    left: 5px;
    top: 10px;
    width: 6px;
    height: 3px;
    border-left: 2px solid #fff;
    border-bottom: 2px solid #fff;
    transform: rotate(-45deg);
}
.rel-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
}
.rel-card {
    display: block;
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 14px rgba(0,0,0,.06);
    text-decoration: none;
    color: #333;
    transition: transform .2s;
}
.rel-card:hover { transform: translateY(-4px); }
.rel-card img {
    width: 100%;
    height: 120px;
    object-fit: cover;
    display: block;
}
.rel-card span {
    display: block;
    padding: 12px 14px;
    font-size: 14px;
    font-weight: 600;
    line-height: 1.4;
}
.side-box {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 6px 26px rgba(0,0,0,.06);
    padding: 24px;
    margin-bottom: 22px;
}
.side-box h4 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 16px;
    color: #1a1a1a;
}
.rel-mini {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid #f2f2f2;
    text-decoration: none;
    color: #444;
    font-size: 14px;
    transition: color .2s;
}
.rel-mini:last-child { border-bottom: none; }
.rel-mini:hover { color: #FF6B35; }
.rel-mini img {
    width: 56px;
    height: 42px;
    object-fit: cover;
    border-radius: 6px;
    flex-shrink: 0;
}
.cta-box { background: linear-gradient(135deg, #FF6B35 0%, #F7931E 100%); color: #fff; }
.cta-box h4, .cta-box p { color: #fff; }
.cta-box p { font-size: 14px; line-height: 1.7; opacity: .95; margin-bottom: 16px; }
.btn-orange {
    display: inline-block;
    background: #fff;
    color: #FF6B35;
    font-weight: 700;
    padding: 12px 28px;
    border-radius: 30px;
    text-decoration: none;
    transition: transform .2s, box-shadow .2s;
}
.btn-orange:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0,0,0,.15); }

@media (max-width: 1024px) {
    .items-grid { grid-template-columns: repeat(2, 1fr); }
    .side-layout-inner, .detail-layout-inner { flex-direction: column; }
    .side-nav, .detail-side { width: 100%; position: static; }
    .detail-hero-content h1 { font-size: 28px; }
}
@media (max-width: 640px) {
    .items-grid { grid-template-columns: 1fr; }
    .rel-grid { grid-template-columns: 1fr; }
    .detail-meta { flex-direction: column; gap: 8px; }
}