/* ============================================================
   兰州华邦投资有限公司官方网站 - 样式文件
   配色方案：商务深蓝 + 哑光银 + 浅暖金点缀
   版式风格：简约稳重，无夸张花哨动效
   适配设备：PC端 + 平板 + 手机（响应式设计）
   ============================================================ */

/* ==================== CSS变量（自定义属性） ==================== */
/* 集中管理所有颜色，方便后续统一修改 */
:root {
    /* ---- 主色调：商务深蓝系 ---- */
    --blue-darkest: #081a2e;      /* 最深蓝（背景用） */
    --blue-dark: #0d2540;         /* 深蓝（头部/页脚） */
    --blue-medium: #1a3d5c;       /* 中蓝（卡片/强调） */
    --blue-light: #2c5f8a;        /* 浅蓝（链接/hover） */
    --blue-pale: #e8f0f7;         /* 淡蓝（背景） */

    /* ---- 辅助色：哑光银 ---- */
    --silver-dark: #8b9096;       /* 深银灰（次要文字） */
    --silver-medium: #b8bdc2;     /* 中银灰（边框/分割线） */
    --silver-light: #e8eaed;      /* 浅银灰（卡片背景） */
    --silver-pale: #f5f6f8;       /* 极浅银灰（页面背景） */

    /* ---- 点缀色：浅暖金 ---- */
    --gold-dark: #b8861e;         /* 深金（hover状态） */
    --gold-medium: #c8963e;       /* 中金（按钮/强调） */
    --gold-light: #d4a843;        /* 浅金（小元素点缀） */
    --gold-pale: #faf5eb;         /* 极浅金（背景点缀） */

    /* ---- 文字颜色 ---- */
    --text-dark: #1a1a1a;         /* 正文深色 */
    --text-body: #444444;         /* 正文灰色 */
    --text-light: #777777;        /* 辅助文字 */
    --text-white: #ffffff;        /* 白色文字 */

    /* ---- 功能色 ---- */
    --white: #ffffff;
    --red: #c0392b;               /* 党建红色 */
    --red-light: #e74c3c;

    /* ---- 尺寸 ---- */
    --header-height: 72px;        /* 导航栏高度 */
    --container-width: 1200px;    /* 内容区最大宽度 */
    --border-radius: 6px;         /* 圆角统一值 */

    /* ---- 字体 ---- */
    --font-heading: "PingFang SC", "Microsoft YaHei", "SimHei", "Heiti SC", sans-serif;
    --font-body: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;

    /* ---- 阴影 ---- */
    --shadow-sm: 0 1px 4px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.10);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
}

/* ==================== 基础重置样式 ==================== */
/* 清除浏览器默认边距，统一盒模型 */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;      /* 平滑滚动到锚点 */
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    color: var(--text-body);
    background-color: var(--white);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;  /* 字体抗锯齿 */
    -moz-osx-font-smoothing: grayscale;
}

/* 去掉列表默认样式 */
ul, ol { list-style: none; }

/* 去掉链接下划线 */
a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

/* 图片默认响应式 */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* 按钮重置 */
button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

/* 容器：限制内容最大宽度并居中 */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* ==================== 通用板块标题样式 ==================== */
/* 所有大板块标题的统一样式 */
.section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

/* 英文小标题 */
.section-subtitle {
    display: block;
    font-size: 14px;
    color: var(--gold-medium);
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 8px;
    font-family: var(--font-heading);
}

/* 中文大标题 */
.section-title {
    font-family: var(--font-heading);
    font-size: 36px;
    font-weight: 900;            /* 粗黑体效果 */
    color: var(--blue-dark);
    margin-bottom: 16px;
    letter-spacing: 2px;
}

/* 分割装饰线（中间菱形图案） */
.section-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.divider-line {
    display: block;
    width: 50px;
    height: 2px;
    background: var(--silver-medium);
}

.divider-diamond {
    display: block;
    width: 10px;
    height: 10px;
    background: var(--gold-medium);
    transform: rotate(45deg);    /* 旋转45度形成菱形 */
}

/* 板块说明文字 */
.section-note {
    font-size: 14px;
    color: var(--text-light);
    margin-top: 12px;
}

/* ==================== 1. 顶部导航栏 ==================== */
.site-header {
    position: fixed;              /* 固定在页面顶部 */
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.97);  /* 半透明白色 */
    backdrop-filter: blur(10px);  /* 毛玻璃模糊效果 */
    box-shadow: var(--shadow-sm);
    z-index: 1000;                /* 确保导航在最上层 */
    transition: all 0.3s ease;
}

/* 滚动后导航栏加深阴影 */
.site-header.scrolled {
    box-shadow: var(--shadow-md);
    background: rgba(255, 255, 255, 0.99);
}

.header-inner {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* ---- LOGO区域 ---- */
.logo-area {
    flex-shrink: 0;               /* LOGO不会被压缩 */
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* LOGO图标（方形，白色底衬托粉色品牌标志） */
.logo-icon {
    width: 44px;
    height: 44px;
    background: var(--white);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;               /* 确保图片不溢出圆角 */
    border: 1px solid var(--silver-light);
}

/* LOGO图标图片 */
.logo-img-icon {
    width: 90%;
    height: 90%;
    object-fit: contain;            /* 保持比例，完整显示粉色标志 */
    display: block;
}

.logo-text-h {
    font-family: var(--font-heading);
    font-size: 26px;
    font-weight: 900;
    color: var(--white);
    line-height: 1;
}

/* LOGO文字 */
.logo-title {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 700;
    color: var(--blue-dark);
    line-height: 1.2;
    white-space: nowrap;
}

.logo-subtitle {
    font-size: 10px;
    color: var(--silver-dark);
    letter-spacing: 2px;
    white-space: nowrap;
}

/* ---- 导航菜单列表 ---- */
.nav-list {
    display: flex;
    gap: 4px;
}

/* 导航链接样式 */
.nav-link {
    display: block;
    padding: 8px 16px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-dark);
    border-radius: 4px;
    transition: all 0.3s ease;
    white-space: nowrap;
    position: relative;
}

/* 鼠标悬停效果 */
.nav-link:hover {
    color: var(--blue-light);
    background: var(--silver-pale);
}

/* 当前激活状态 */
.nav-link.active {
    color: var(--blue-light);
    font-weight: 700;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 3px;
    background: var(--gold-medium);
    border-radius: 2px;
}

/* ---- 导航下拉菜单 ---- */
/* 下拉菜单容器 */
.nav-dropdown {
    position: relative;
}

/* 下拉箭头动画 */
.dropdown-arrow {
    display: inline-block;
    font-size: 10px;
    margin-left: 4px;
    transition: transform 0.3s ease;
    vertical-align: middle;
}

/* hover时箭头旋转 */
.nav-dropdown:hover .dropdown-arrow {
    transform: rotate(180deg);
}

/* 下拉菜单面板 */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(8px);
    min-width: 180px;
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1002;
    list-style: none;
}

/* hover展开下拉 */
.nav-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* 下拉菜单项 */
.dropdown-link {
    display: block;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-dark);
    white-space: nowrap;
    transition: all 0.2s ease;
    border-left: 3px solid transparent;
}

.dropdown-link:hover {
    background: var(--silver-pale);
    color: var(--blue-medium);
    border-left-color: var(--gold-medium);
}

/* 下拉菜单当前激活项 */
.dropdown-link.active {
    color: var(--blue-medium);
    font-weight: 700;
    background: var(--blue-pale);
    border-left-color: var(--blue-medium);
}

/* 禁用项（板块建设中） */
.dropdown-link.dropdown-disabled {
    color: var(--silver-dark);
    cursor: not-allowed;
    opacity: 0.6;
}

.dropdown-link.dropdown-disabled:hover {
    background: transparent;
    color: var(--silver-dark);
    border-left-color: transparent;
}

/* ---- 移动端汉堡菜单按钮 ---- */
.menu-toggle {
    display: none;                /* 桌面端隐藏 */
    flex-direction: column;
    gap: 5px;
    padding: 10px;
    z-index: 1001;
}

.menu-bar {
    display: block;
    width: 26px;
    height: 2px;
    background: var(--blue-dark);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* 菜单展开时汉堡按钮变为X */
.menu-toggle.open .menu-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.menu-toggle.open .menu-bar:nth-child(2) {
    opacity: 0;
}
.menu-toggle.open .menu-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ==================== 2. 全屏轮播Banner ==================== */
.hero-banner {
    position: relative;
    width: 100%;
    height: 100vh;                /* 全屏高度 */
    min-height: 560px;
    margin-top: 0;
    overflow: hidden;
}

.banner-carousel {
    position: relative;
    width: 100%;
    height: 100%;
}

/* 每张轮播幻灯片 */
.banner-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    opacity: 0;
    transition: opacity 0.8s ease;
    /* 背景图在HTML内联样式中设置 */
}

/* 当前激活的幻灯片 */
.banner-slide.active {
    opacity: 1;
    z-index: 1;
}

/* 暗色遮罩层（让白色文字更清晰，实拍背景加深遮罩） */
.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.50);
}

/* 轮播文字内容 */
.banner-content {
    position: relative;
    z-index: 2;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
    color: var(--text-white);
    padding-top: 60px;            /* 避开导航栏 */
}

/* 轮播小标签 */
.banner-tag {
    display: inline-block;
    font-size: 13px;
    letter-spacing: 3px;
    color: var(--gold-light);
    border: 1px solid rgba(212, 168, 67, 0.5);
    padding: 6px 18px;
    border-radius: 20px;
    margin-bottom: 24px;
}

/* 轮播大标题 */
.banner-title {
    font-family: var(--font-heading);
    font-size: 52px;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 20px;
}

/* 轮播描述 */
.banner-desc {
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: 32px;
    opacity: 0.9;
}

/* 轮播CTA按钮 */
.banner-btn {
    display: inline-block;
    padding: 14px 40px;
    background: var(--gold-medium);
    color: var(--white);
    font-size: 16px;
    font-weight: 600;
    border-radius: 50px;
    transition: all 0.3s ease;
    letter-spacing: 1px;
}

.banner-btn:hover {
    background: var(--gold-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(200, 150, 62, 0.4);
}

/* 轮播指示器（小圆点） */
.banner-dots {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    display: flex;
    gap: 12px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
}

.dot.active {
    background: var(--gold-medium);
    transform: scale(1.3);
}

/* 轮播左右箭头 */
.banner-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 3;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(4px);
}

.banner-arrow:hover {
    background: rgba(255, 255, 255, 0.4);
}

.banner-prev { left: 24px; }
.banner-next { right: 24px; }

/* ==================== 3. 集团简介板块 ==================== */
.intro-section {
    background: var(--white);
    padding-top: 100px;
}

.intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;  /* 左右两栏布局 */
    gap: 60px;
    align-items: center;
}

/* 简介文字 */
.intro-lead {
    font-size: 18px;
    line-height: 1.9;
    color: var(--text-dark);
    margin-bottom: 18px;
}

.intro-lead strong {
    color: var(--blue-medium);
    font-weight: 700;
}

.intro-body {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-body);
    margin-bottom: 30px;
}

.intro-body em {
    color: var(--gold-dark);
    font-style: normal;
    font-weight: 600;
}

/* 关键数据统计 */
.intro-stats {
    display: flex;
    gap: 30px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-family: var(--font-heading);
    font-size: 36px;
    font-weight: 900;
    color: var(--blue-medium);
    line-height: 1.2;
}

.stat-unit {
    font-size: 18px;
    font-weight: 500;
}

.stat-label {
    display: block;
    font-size: 13px;
    color: var(--text-light);
    margin-top: 4px;
}

/* 简介配图占位 */
.intro-image {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

/* 简介实拍图片 */
.intro-img-real {
    width: 100%;
    height: auto;
    display: block;
    aspect-ratio: 4 / 3;
    object-fit: cover;
}

.intro-img-placeholder {
    width: 100%;
    aspect-ratio: 4 / 3;
    background: linear-gradient(135deg, var(--silver-light) 0%, var(--silver-pale) 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 2px dashed var(--silver-medium);
    border-radius: var(--border-radius);
    color: var(--silver-dark);
}

.intro-img-placeholder .placeholder-icon {
    font-size: 48px;
    margin-bottom: 8px;
}

.intro-img-placeholder .placeholder-text {
    font-size: 15px;
    font-weight: 600;
}

.intro-img-placeholder .placeholder-hint {
    font-size: 12px;
    margin-top: 4px;
    color: var(--text-light);
}

/* ==================== 4. 核心产业双市场卡片 ==================== */
.industry-section {
    background: var(--silver-pale);
}

.industry-cards {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

/* 单张市场卡片 */
.industry-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    background: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.4s ease;
}

/* 卡片悬停微微上浮（无夸张动效） */
.industry-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

/* 交替布局（第二张卡图片在右） */
.industry-card.card-reverse .card-image {
    order: 2;
}

/* 卡片图片区域 */
.card-image {
    overflow: hidden;
}

/* 卡片实拍图片 */
.card-img-real {
    width: 100%;
    height: 100%;
    min-height: 320px;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}

.industry-card:hover .card-img-real {
    transform: scale(1.05);       /* hover轻微放大 */
}

/* 图片hover轻微放大效果（保留兼容） */
.card-image .card-img-placeholder {
    width: 100%;
    height: 100%;
    min-height: 320px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 2px dashed var(--silver-medium);
    transition: transform 0.5s ease;
}

.industry-card:hover .card-image .card-img-placeholder {
    transform: scale(1.05);       /* hover轻微放大 */
}

/* 饰品广场占位背景 */
.card-img-placeholder.ornaments-bg {
    background: linear-gradient(135deg, #1a3d5c 0%, #2c5f8a 50%, #c8963e 100%);
    color: var(--white);
}

/* 内衣广场占位背景 */
.card-img-placeholder.underwear-bg {
    background: linear-gradient(135deg, #2c3e50 0%, #4a6fa5 50%, #c8963e 100%);
    color: var(--white);
}

.card-img-placeholder .placeholder-icon {
    font-size: 56px;
    margin-bottom: 8px;
}

.card-img-placeholder .placeholder-text {
    font-size: 18px;
    font-weight: 700;
}

.card-img-placeholder .placeholder-hint {
    font-size: 13px;
    margin-top: 6px;
    opacity: 0.7;
}

/* 卡片正文 */
.card-body {
    padding: 36px 32px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* 分类标签 */
.card-badge {
    display: inline-block;
    align-self: flex-start;
    font-size: 12px;
    font-weight: 600;
    color: var(--gold-dark);
    background: var(--gold-pale);
    padding: 4px 14px;
    border-radius: 20px;
    margin-bottom: 12px;
    letter-spacing: 1px;
}

/* 卡片标题 */
.card-title {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 800;
    color: var(--blue-dark);
    margin-bottom: 14px;
}

/* 卡片描述 */
.card-desc {
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-body);
    margin-bottom: 16px;
}

.card-desc strong {
    color: var(--blue-medium);
}

/* 卡片特性列表 */
.card-features {
    margin-bottom: 20px;
}

.card-features li {
    font-size: 14px;
    color: var(--text-body);
    padding: 5px 0;
}

.card-features li:first-letter {
    color: var(--gold-medium);
    font-weight: 700;
}

/* 卡片链接 */
.card-link {
    display: inline-block;
    align-self: flex-start;
    font-size: 15px;
    font-weight: 600;
    color: var(--blue-light);
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
}

.card-link:hover {
    color: var(--gold-dark);
    border-bottom-color: var(--gold-medium);
}

/* ==================== 5. 线上批发商城 ==================== */
.wholesale-section {
    background: var(--white);
}

/* 专区切换标签 */
.wholesale-tabs {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 40px;
}

.tab-btn {
    padding: 12px 32px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-body);
    background: var(--silver-pale);
    border-radius: 50px;
    transition: all 0.3s ease;
}

.tab-btn:hover {
    background: var(--silver-light);
    color: var(--blue-medium);
}

.tab-btn.active {
    background: var(--blue-medium);
    color: var(--white);
    box-shadow: 0 4px 12px rgba(26, 61, 92, 0.3);
}

/* 标签面板 */
.tab-panel {
    display: none;                /* 默认隐藏 */
}

.tab-panel.active {
    display: block;
}

/* 批发优势 */
.wholesale-advantages h3 {
    font-family: var(--font-heading);
    font-size: 22px;
    font-weight: 700;
    color: var(--blue-dark);
    margin-bottom: 24px;
    text-align: center;
}

.advantage-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 48px;
}

.advantage-item {
    text-align: center;
    padding: 24px 16px;
    background: var(--silver-pale);
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
}

.advantage-item:hover {
    background: var(--blue-pale);
    transform: translateY(-2px);
}

.advantage-icon {
    font-size: 32px;
    display: block;
    margin-bottom: 10px;
}

.advantage-item h4 {
    font-family: var(--font-heading);
    font-size: 16px;
    font-weight: 700;
    color: var(--blue-dark);
    margin-bottom: 8px;
}

.advantage-item p {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.6;
}

/* 货品分类网格 */
.product-categories h3 {
    font-family: var(--font-heading);
    font-size: 22px;
    font-weight: 700;
    color: var(--blue-dark);
    margin-bottom: 24px;
    text-align: center;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

.category-card {
    background: var(--white);
    border: 1px solid var(--silver-light);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: all 0.3s ease;
}

.category-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

/* 货品图片hover放大 */
.category-card:hover .cat-img-wrap img {
    transform: scale(1.05);
}

/* 货品图片容器 */
.cat-img-wrap {
    width: 100%;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    border-bottom: 2px solid var(--silver-light);
}

.cat-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;            /* 保持比例裁剪，不拉伸变形 */
    display: block;
    transition: transform 0.4s ease;
}

/* 保留旧版占位样式兼容 */
.cat-img-placeholder {
    width: 100%;
    aspect-ratio: 4 / 3;
    background: linear-gradient(135deg, var(--silver-light) 0%, var(--silver-pale) 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: transform 0.4s ease;
    border-bottom: 2px dashed var(--silver-medium);
}

.cat-img-placeholder span {
    font-size: 40px;
}

.cat-img-placeholder small {
    font-size: 12px;
    color: var(--silver-dark);
    margin-top: 4px;
}

.cat-info {
    padding: 16px;
    text-align: center;
}

.cat-info h4 {
    font-family: var(--font-heading);
    font-size: 16px;
    font-weight: 700;
    color: var(--blue-dark);
    margin-bottom: 6px;
}

.cat-info p {
    font-size: 13px;
    color: var(--text-light);
}

/* 询价入口 */
.inquiry-box {
    text-align: center;
    padding: 32px 24px;
    background: linear-gradient(135deg, var(--blue-dark) 0%, var(--blue-medium) 100%);
    border-radius: var(--border-radius);
    color: var(--white);
}

.inquiry-box h4 {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
}

.inquiry-box > p {
    font-size: 14px;
    opacity: 0.85;
    margin-bottom: 20px;
}

.inquiry-info {
    display: flex;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.inquiry-phone, .inquiry-wechat {
    font-size: 15px;
    font-weight: 500;
    padding: 8px 20px;
    background: rgba(255,255,255,0.1);
    border-radius: 4px;
}

.inquiry-btn {
    display: inline-block;
    padding: 12px 36px;
    background: var(--gold-medium);
    color: var(--white);
    font-size: 16px;
    font-weight: 600;
    border-radius: 50px;
    transition: all 0.3s ease;
}

.inquiry-btn:hover {
    background: var(--gold-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(200, 150, 62, 0.4);
}

/* ==================== 6. 新闻中心 ==================== */
.news-section {
    background: var(--silver-pale);
}

/* 新闻网格布局 */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 40px;
}

/* 新闻卡片 */
.news-card {
    background: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.news-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

/* 新闻图片hover放大 */
.news-card:hover .news-img-real {
    transform: scale(1.05);
}

.news-img-wrap {
    width: 100%;
    aspect-ratio: 16 / 10;
    overflow: hidden;
}

.news-img-real {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.4s ease;
}

.news-img-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--blue-pale) 0%, var(--silver-light) 100%);
    transition: transform 0.4s ease;
}

.news-img-placeholder span {
    font-size: 32px;
}

.news-img-placeholder small {
    font-size: 11px;
    color: var(--silver-dark);
    margin-top: 4px;
}

.news-card-body {
    padding: 18px;
}

.news-date {
    font-size: 12px;
    color: var(--silver-dark);
    display: block;
    margin-bottom: 8px;
}

.news-card-title {
    font-family: var(--font-heading);
    font-size: 16px;
    font-weight: 700;
    color: var(--blue-dark);
    margin-bottom: 8px;
    line-height: 1.4;
    /* 超过两行省略号 */
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-card-desc {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ===== 分页器 ===== */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
}

.pagination button {
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-body);
    background: var(--white);
    border: 1px solid var(--silver-light);
    border-radius: 4px;
    transition: all 0.3s ease;
}

.pagination button:hover:not(:disabled) {
    background: var(--blue-pale);
    border-color: var(--blue-light);
    color: var(--blue-medium);
}

.pagination button.active {
    background: var(--blue-medium);
    color: var(--white);
    border-color: var(--blue-medium);
}

.pagination button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ==================== 7. 党建专栏 ==================== */
.party-section {
    background: var(--white);
}

.party-content {
    max-width: 900px;
    margin: 0 auto;
}

/* 时间线 */
.party-timeline {
    position: relative;
    padding-left: 40px;
    margin-bottom: 48px;
}

/* 时间线竖线 */
.party-timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, var(--red), var(--blue-medium));
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    margin-bottom: 32px;
}

/* 时间线圆点 */
.timeline-dot {
    position: absolute;
    left: -33px;
    top: 8px;
    width: 16px;
    height: 16px;
    background: var(--red);
    border-radius: 50%;
    border: 3px solid var(--white);
    box-shadow: 0 0 0 3px var(--red);
}

/* 第二个圆点不同颜色 */
.timeline-item:last-child .timeline-dot {
    background: var(--blue-medium);
    box-shadow: 0 0 0 3px var(--blue-medium);
}

.timeline-date {
    display: inline-block;
    font-size: 14px;
    font-weight: 700;
    color: var(--red);
    background: #fef5f5;
    padding: 4px 12px;
    border-radius: 4px;
    margin-bottom: 8px;
}

.timeline-item:last-child .timeline-date {
    color: var(--blue-medium);
    background: var(--blue-pale);
}

.timeline-content h3 {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 700;
    color: var(--blue-dark);
    margin-bottom: 8px;
}

.timeline-content p {
    font-size: 14px;
    color: var(--text-body);
    line-height: 1.8;
}

/* 党建宗旨 */
.party-motto h3 {
    font-family: var(--font-heading);
    font-size: 22px;
    font-weight: 700;
    color: var(--blue-dark);
    margin-bottom: 24px;
    text-align: center;
}

.motto-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 48px;
}

.motto-card {
    text-align: center;
    padding: 28px 20px;
    background: #fef9f5;
    border: 1px solid var(--gold-pale);
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
}

.motto-card:hover {
    border-color: var(--gold-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.motto-icon {
    font-size: 36px;
    display: block;
    margin-bottom: 10px;
}

.motto-card h4 {
    font-family: var(--font-heading);
    font-size: 17px;
    font-weight: 700;
    color: var(--blue-dark);
    margin-bottom: 8px;
}

.motto-card p {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.6;
}

/* 党建活动照片 */
.party-gallery h3 {
    font-family: var(--font-heading);
    font-size: 22px;
    font-weight: 700;
    color: var(--blue-dark);
    margin-bottom: 24px;
    text-align: center;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.gallery-item {
    border-radius: var(--border-radius);
    overflow: hidden;
}

/* 照片hover放大 */
.gallery-item:hover .gallery-placeholder {
    transform: scale(1.05);
}

.gallery-placeholder {
    aspect-ratio: 4 / 3;
    background: linear-gradient(135deg, var(--silver-light) 0%, var(--silver-pale) 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 2px dashed var(--silver-medium);
    border-radius: var(--border-radius);
    transition: transform 0.4s ease;
}

.gallery-placeholder span {
    font-size: 32px;
    margin-bottom: 6px;
}

.gallery-placeholder small {
    font-size: 12px;
    color: var(--silver-dark);
}

/* ==================== 8. 社会责任 ==================== */
.responsibility-section {
    background: var(--silver-pale);
}

.responsibility-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.resp-card {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 36px 28px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    border-top: 3px solid transparent;
}

.resp-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
    border-top-color: var(--gold-medium);
}

.resp-icon-wrap {
    width: 72px;
    height: 72px;
    margin: 0 auto 18px;
    background: var(--blue-pale);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.resp-icon {
    font-size: 32px;
}

.resp-card h3 {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
    color: var(--blue-dark);
    margin-bottom: 14px;
}

.resp-card p {
    font-size: 14px;
    color: var(--text-body);
    line-height: 1.8;
}

.resp-card p strong {
    color: var(--blue-medium);
}

/* ==================== 9. 底部页脚 ==================== */
.site-footer {
    background: var(--blue-darkest);
    color: rgba(255, 255, 255, 0.85);
    padding: 56px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1.5fr 1fr 1fr;
    gap: 36px;
    margin-bottom: 40px;
}

.footer-col h4 {
    font-family: var(--font-heading);
    font-size: 16px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid rgba(255, 255, 255, 0.15);
}

/* 页脚LOGO */
.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

/* 页脚LOGO图片 */
.footer-logo-img {
    width: 48px;
    height: 48px;
    object-fit: contain;
    display: block;
    border-radius: 4px;
}

.footer-logo-icon {
    width: 48px;
    height: 48px;
    background: var(--gold-medium);
    color: var(--white);
    font-family: var(--font-heading);
    font-size: 28px;
    font-weight: 900;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.footer-logo h4 {
    font-size: 18px;
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.footer-logo small {
    font-size: 10px;
    color: rgba(255,255,255,0.5);
    letter-spacing: 1px;
}

.footer-desc {
    font-size: 13px;
    line-height: 1.8;
    color: rgba(255,255,255,0.6);
}

/* 联系信息 */
.footer-contact li {
    padding: 6px 0;
    font-size: 14px;
    color: rgba(255,255,255,0.7);
    line-height: 1.5;
}

/* 快速链接 */
.footer-links li {
    padding: 5px 0;
}

.footer-links a {
    font-size: 14px;
    color: rgba(255,255,255,0.7);
    transition: all 0.3s ease;
}

.footer-links a:hover {
    color: var(--gold-light);
    padding-left: 4px;
}

/* 微信二维码占位 */
.qrcode-placeholder {
    width: 120px;
    height: 120px;
    background: rgba(255,255,255,0.1);
    border: 1px dashed rgba(255,255,255,0.3);
    border-radius: 4px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    color: rgba(255,255,255,0.5);
}

.qrcode-placeholder small {
    font-size: 10px;
    margin-top: 4px;
}

/* 招商微信二维码（真实图片） */
.qrcode-wrap {
    display: flex;
    justify-content: center;
    gap: 14px;
}

.qrcode-img {
    width: 84px;
    height: auto;
    display: inline-block;
    border-radius: 6px;
    background: #fff;
    box-shadow: 0 3px 12px rgba(0, 0, 0, 0.35);
}

/* 版权信息 */
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 20px 0;
    text-align: center;
    font-size: 13px;
    color: rgba(255,255,255,0.5);
    line-height: 2;
}

.footer-bottom a {
    color: rgba(255,255,255,0.5);
}

.footer-bottom a:hover {
    color: var(--gold-light);
}

/* ==================== 10. 回到顶部按钮 ==================== */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 44px;
    height: 44px;
    background: var(--blue-medium);
    color: var(--white);
    font-size: 20px;
    font-weight: 700;
    border-radius: 50%;
    box-shadow: var(--shadow-md);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 滚动后显示 */
.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--gold-medium);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

/* ==================== 11. 华岳木材物流子页面专属样式 ==================== */
/* 配色说明：深木色 + 深灰 + 集团品牌蓝，融入木材/钢材仓储物流工业质感 */

/* ---- 11a. 木材物流首屏Banner ---- */
.timber-banner {
    position: relative;
    width: 100%;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: linear-gradient(155deg, #1a2530 0%, #1b2d3a 30%, #2c3e2d 60%, #1a2a1f 100%);
    /* 深灰蓝渐变搭配深木色底调，模拟木材仓储工业氛围 */;
}

/* 木材纹理叠加层 */
.timber-banner-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    /* 模拟木材/钢材工业场景渐变背景 */
    background:
        radial-gradient(ellipse at 20% 50%, rgba(139, 110, 99, 0.25) 0%, transparent 55%),
        radial-gradient(ellipse at 75% 40%, rgba(84, 110, 122, 0.30) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(62, 39, 35, 0.35) 0%, transparent 50%);
}

.timber-banner-content {
    padding-top: 80px;
}

/* Banner双按钮布局 */
.banner-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* 描边风格按钮（辅按钮） */
.banner-btn-outline {
    background: transparent !important;
    border: 2px solid rgba(255,255,255,0.7);
    color: var(--text-white);
}

.banner-btn-outline:hover {
    background: rgba(255,255,255,0.15) !important;
    border-color: var(--white);
    box-shadow: none !important;
    transform: translateY(-2px);
}

/* 向下滚动提示箭头 */
.scroll-hint {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    animation: scrollPulse 2s ease-in-out infinite;
}

.scroll-arrow {
    font-size: 28px;
    color: rgba(255,255,255,0.7);
    line-height: 1;
}

.scroll-text {
    font-size: 11px;
    color: rgba(255,255,255,0.5);
    letter-spacing: 3px;
    text-transform: uppercase;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.5; transform: translateX(-50%) translateY(0); }
    50% { opacity: 1; transform: translateX(-50%) translateY(8px); }
}

/* ---- 11b. 企业概况区（关于我们） ---- */
.timber-about-section {
    background: var(--white);
    padding-top: 100px;
}

.timber-about-content {
    display: grid;
    grid-template-columns: 1.3fr 0.7fr;
    gap: 48px;
    align-items: start;
}

.timber-about-text .intro-lead {
    font-size: 17px;
    line-height: 1.9;
    color: var(--text-dark);
    margin-bottom: 18px;
}

.timber-about-text .intro-lead strong {
    color: var(--blue-medium);
    font-weight: 700;
}

.timber-about-text .intro-body {
    font-size: 15px;
    line-height: 1.85;
    color: var(--text-body);
    margin-bottom: 14px;
}

.timber-about-text .intro-body em {
    color: #5d4037;  /* 深木色强调 */
    font-style: normal;
    font-weight: 600;
}

/* 侧边企业信息卡 */
.timber-info-card {
    background: linear-gradient(160deg, #f9f7f5 0%, #f5f3f0 100%);
    border: 1px solid #e0d8cf;
    border-left: 4px solid #5d4037;  /* 深木色左边条 */
    border-radius: var(--border-radius);
    padding: 28px 24px;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 90px;
}

.info-card-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    padding-bottom: 14px;
    border-bottom: 1px solid #e0d8cf;
}

.info-card-icon {
    font-size: 28px;
}

.info-card-header h3 {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 700;
    color: #3e2723;
}

.info-card-list {
    list-style: none;
    padding: 0;
}

.info-card-list li {
    padding: 12px 0;
    border-bottom: 1px dashed #e8e2da;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.info-card-list li:last-child {
    border-bottom: none;
}

.info-label {
    font-size: 12px;
    color: var(--silver-dark);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.info-value {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-dark);
}

/* ---- 11c. 核心业务区 ---- */
.timber-business-section {
    background: #f7f5f2;  /* 极浅暖灰木色调 */
}

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

/* 业务卡片 */
.timber-biz-card {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 32px 24px;
    box-shadow: var(--shadow-sm);
    transition: all 0.35s ease;
    border-top: 4px solid transparent;
    display: flex;
    flex-direction: column;
}

.timber-biz-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-6px);
    border-top-color: #5d4037;  /* 深木色顶部条 */
}

/* 卡片图标 */
.biz-card-icon {
    width: 60px;
    height: 60px;
    margin-bottom: 18px;
    background: linear-gradient(135deg, #f0ebe3 0%, #e8ddd0 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.biz-icon-graphic {
    font-size: 30px;
}

.timber-biz-card:nth-child(2) .biz-card-icon {
    background: linear-gradient(135deg, #e3ecf2 0%, #d0dfe8 100%);
}

.timber-biz-card:nth-child(3) .biz-card-icon {
    background: linear-gradient(135deg, #ede8e0 0%, #e0d8cc 100%);
}

.timber-biz-card:nth-child(4) .biz-card-icon {
    background: linear-gradient(135deg, #e8edf0 0%, #d4dfe5 100%);
}

.timber-biz-card:nth-child(5) .biz-card-icon {
    background: linear-gradient(135deg, #efe9e3 0%, #e5dbcf 100%);
}

.biz-card-title {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 700;
    color: var(--blue-dark);
    margin-bottom: 10px;
}

.biz-card-desc {
    font-size: 14px;
    line-height: 1.75;
    color: var(--text-body);
    margin-bottom: 16px;
    flex: 1;
}

/* 业务标签 */
.biz-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    list-style: none;
    padding: 0;
}

.biz-card-tags li {
    font-size: 12px;
    font-weight: 500;
    color: #5d4037;
    background: #f5f0eb;
    padding: 4px 12px;
    border-radius: 20px;
    white-space: nowrap;
}

.timber-biz-card:nth-child(2) .biz-card-tags li {
    color: #1a3d5c;
    background: #e8f0f7;
}

.timber-biz-card:nth-child(3) .biz-card-tags li {
    color: #4e6e3b;
    background: #eef5e8;
}

.timber-biz-card:nth-child(4) .biz-card-tags li {
    color: #546e7a;
    background: #eceff1;
}

.timber-biz-card:nth-child(5) .biz-card-tags li {
    color: #6d4c41;
    background: #f3ebe5;
}

/* ---- 11d. 园区优势区 ---- */
.timber-advantage-section {
    background: var(--white);
}

.timber-advantage-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.timber-adv-item {
    text-align: center;
    padding: 40px 28px;
    border-radius: var(--border-radius);
    background: #fafaf8;
    border: 1px solid #eee;
    transition: all 0.35s ease;
}

.timber-adv-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
    border-color: #d0c8bc;
}

.adv-icon-wrap {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, #f5f0ea 0%, #ebe1d5 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.adv-icon {
    font-size: 32px;
}

.adv-title {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
    color: #3e2723;
    margin-bottom: 12px;
}

.adv-desc {
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-body);
}

/* ---- 11e. 发展规划区 ---- */
.timber-plan-section {
    background: #f7f5f2;
}

.timber-plan-content {
    max-width: 860px;
    margin: 0 auto;
}

.plan-body {
    font-size: 15px;
    line-height: 1.9;
    color: var(--text-body);
    margin-bottom: 18px;
}

.plan-body strong {
    color: var(--blue-medium);
    font-weight: 700;
}

.plan-body em {
    color: #5d4037;
    font-style: normal;
    font-weight: 600;
}

/* 愿景引用块 */
.plan-vision {
    margin-top: 32px;
    padding: 28px 32px;
    background: linear-gradient(135deg, #f5f0ea 0%, #ede4d8 100%);
    border-left: 5px solid #5d4037;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    display: flex;
    align-items: flex-start;
    gap: 14px;
}

.vision-quote {
    font-family: Georgia, "Times New Roman", serif;
    font-size: 56px;
    line-height: 1;
    color: #5d4037;
    opacity: 0.4;
    flex-shrink: 0;
    margin-top: -8px;
}

.plan-vision p {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 700;
    color: #3e2723;
    line-height: 1.6;
    margin: 0;
}

/* ---- 11f. 联系咨询区 ---- */
.timber-contact-section {
    background: #f7f5f2;
}

.timber-contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: stretch;
}

/* 联系信息卡片 */
.timber-contact-info {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 36px 28px;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-info-item {
    display: flex;
    gap: 14px;
    align-items: flex-start;
}

.contact-info-icon {
    font-size: 24px;
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    background: #f7f5f2;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-info-text strong {
    display: block;
    font-size: 14px;
    font-weight: 700;
    color: #3e2723;
    margin-bottom: 4px;
}

.contact-info-text p {
    font-size: 14px;
    color: var(--text-body);
    line-height: 1.6;
}

.contact-phone-number {
    font-family: var(--font-heading);
    font-size: 24px !important;
    font-weight: 900 !important;
    color: var(--blue-medium) !important;
    letter-spacing: 2px;
}

/* 立即咨询按钮 */
.contact-cta-btn {
    display: block;
    text-align: center;
    margin-top: 8px;
    padding: 14px 0;
    background: #5d4037;
    color: var(--white);
    font-size: 16px;
    font-weight: 600;
    border-radius: 50px;
    transition: all 0.3s ease;
    letter-spacing: 1px;
}

.contact-cta-btn:hover {
    background: #3e2723;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(62, 39, 35, 0.35);
    color: var(--white);
}

/* 地图占位框 */
.timber-contact-map {
    border-radius: var(--border-radius);
    overflow: hidden;
    min-height: 360px;
}

.map-placeholder {
    width: 100%;
    height: 100%;
    min-height: 360px;
    background: linear-gradient(135deg, #e8e5df 0%, #ddd9d1 100%);
    border: 2px dashed var(--silver-medium);
    border-radius: var(--border-radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.map-placeholder-icon {
    font-size: 52px;
}

.map-placeholder-text {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-dark);
}

.map-placeholder-hint {
    font-size: 12px;
    color: var(--silver-dark);
}

/* 嵌入地图 iframe 自适应 */
.timber-contact-map iframe {
    width: 100%;
    height: 100%;
    min-height: 360px;
    border: 0;
    display: block;
}

/* ==================== 响应式设计 ==================== */

/* ----- 平板端（≤992px）----- */
@media (max-width: 992px) {
    :root {
        --header-height: 64px;
    }

    .section {
        padding: 56px 0;
    }

    /* 移动端dropdown展开状态 */
    .nav-dropdown.open .dropdown-menu {
        display: block;
        opacity: 1;
        visibility: visible;
    }

    /* 导航：显示汉堡菜单，隐藏桌面菜单 */
    .menu-toggle {
        display: flex;
    }

    .main-nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        width: 100%;
        background: var(--white);
        box-shadow: var(--shadow-md);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease;
    }

    /* 菜单展开状态 */
    .main-nav.open {
        max-height: 500px;
    }

    .nav-list {
        flex-direction: column;
        padding: 8px 0;
    }

    .nav-link {
        padding: 14px 24px;
        border-radius: 0;
        border-bottom: 1px solid var(--silver-pale);
    }

    .nav-link.active::after {
        display: none;
    }

    /* 移动端下拉菜单样式 */
    .nav-dropdown {
        position: relative;
    }

    .dropdown-menu {
        position: static;
        transform: none;
        box-shadow: none;
        background: var(--silver-pale);
        border-radius: 0;
        padding: 0;
        max-height: 0;
        overflow: hidden;
        opacity: 1;
        visibility: visible;
        transition: max-height 0.35s ease;
    }

    .nav-dropdown.open .dropdown-menu {
        max-height: 300px;
    }

    .dropdown-link {
        padding: 12px 24px 12px 40px;
        font-size: 14px;
        border-bottom: 1px solid rgba(0,0,0,0.05);
        border-left: none;
    }

    .dropdown-link:hover {
        border-left: none;
    }

    .dropdown-link.active {
        border-left: 3px solid var(--blue-medium);
    }

    /* 移动端下拉箭头 */
    .dropdown-arrow {
        float: right;
        font-size: 12px;
    }

    /* Banner标题缩小 */
    .banner-title {
        font-size: 34px;
    }

    .banner-desc {
        font-size: 15px;
    }

    /* 简介两栏改为单栏 */
    .intro-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .intro-image {
        order: -1;                /* 图片移到文字上方 */
        max-width: 480px;
        justify-self: center;
    }

    /* 市场卡片两栏变单栏 */
    .industry-card {
        grid-template-columns: 1fr;
    }

    /* 卡片交替布局取消 */
    .industry-card.card-reverse .card-image {
        order: 1;
    }

    /* 批发优势4列变2列 */
    .advantage-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* 货品分类3列变2列 */
    .category-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* 新闻3列变2列 */
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* 党建宗旨3列变单列 */
    .motto-cards {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin-left: auto;
        margin-right: auto;
    }

    /* 党建照片4列变2列 */
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* 社会责任3列变单列 */
    .responsibility-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin-left: auto;
        margin-right: auto;
    }

    /* 页脚4列变2列 */
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* ---- 木材物流页平板端适配 ---- */
    /* 关于我们两栏变单栏 */
    .timber-about-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .timber-info-card {
        position: static;
        max-width: 480px;
    }

    /* 核心业务3列变2列 */
    .timber-business-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* 园区优势4列变2列 */
    .timber-advantage-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* 未来规划内容区收窄 */
    .timber-plan-content {
        max-width: 100%;
    }

    /* 联系咨询两栏变单栏 */
    .timber-contact-content {
        grid-template-columns: 1fr;
    }

    .timber-contact-map {
        min-height: 280px;
    }
}

/* ----- 手机端（≤768px）----- */
@media (max-width: 768px) {
    .section {
        padding: 48px 0;
    }

    .section-title {
        font-size: 28px;
    }

    /* Banner全屏变小 */
    .hero-banner {
        height: 80vh;
        min-height: 420px;
    }

    .banner-title {
        font-size: 26px;
    }

    .banner-desc {
        font-size: 14px;
        line-height: 1.6;
    }

    .banner-tag {
        font-size: 11px;
        padding: 4px 12px;
    }

    .banner-btn {
        padding: 10px 28px;
        font-size: 14px;
    }

    /* 隐藏轮播左右箭头 */
    .banner-arrow {
        display: none;
    }

    /* 数据统计换行 */
    .intro-stats {
        flex-wrap: wrap;
        gap: 20px;
    }

    .stat-item {
        flex: 1 1 40%;
    }

    .stat-number {
        font-size: 28px;
    }

    /* 批发优势2列变单列 */
    .advantage-grid {
        grid-template-columns: 1fr;
    }

    /* 货品分类2列变单列 */
    .category-grid {
        grid-template-columns: 1fr;
    }

    /* 询价信息纵向排列 */
    .inquiry-info {
        flex-direction: column;
        gap: 12px;
        align-items: center;
    }

    /* 新闻2列变单列 */
    .news-grid {
        grid-template-columns: 1fr;
    }

    /* 页脚2列变单列 */
    .footer-grid {
        grid-template-columns: 1fr;
    }

    /* 回到顶部按钮缩小 */
    .back-to-top {
        width: 38px;
        height: 38px;
        bottom: 20px;
        right: 20px;
        font-size: 16px;
    }

    /* ---- 木材物流页手机端适配 ---- */
    /* Banner缩小 */
    .timber-banner {
        min-height: 80vh;
    }

    .timber-banner .banner-title {
        font-size: 26px;
    }

    .timber-banner .banner-desc {
        font-size: 14px;
        line-height: 1.6;
    }

    .banner-actions {
        flex-direction: column;
        gap: 12px;
    }

    .banner-actions .banner-btn {
        text-align: center;
    }

    /* 企业信息卡去掉sticky */
    .timber-info-card {
        position: static;
    }

    /* 核心业务2列变单列 */
    .timber-business-grid {
        grid-template-columns: 1fr;
    }

    /* 园区优势2列变单列 */
    .timber-advantage-grid {
        grid-template-columns: 1fr;
        max-width: 480px;
        margin-left: auto;
        margin-right: auto;
    }

    /* 未来规划引用块缩小 */
    .plan-vision {
        padding: 20px 18px;
    }

    .vision-quote {
        font-size: 42px;
    }

    .plan-vision p {
        font-size: 16px;
    }

    /* 联系卡片内部间距缩小 */
    .timber-contact-info {
        padding: 24px 18px;
    }
}

/* ----- 小屏手机（≤480px）----- */
@media (max-width: 480px) {
    .section-title {
        font-size: 24px;
    }

    .banner-title {
        font-size: 22px;
    }

    .banner-desc {
        font-size: 13px;
    }

    /* 标签按钮变小 */
    .tab-btn {
        padding: 10px 20px;
        font-size: 14px;
    }

    /* 卡片内边距减小 */
    .card-body {
        padding: 24px 18px;
    }

    .card-title {
        font-size: 20px;
    }

    .resp-card {
        padding: 24px 18px;
    }

    /* 木材物流页小屏适配 */
    .timber-banner .banner-title {
        font-size: 22px;
    }

    .timber-banner .banner-desc {
        font-size: 13px;
    }

    .timber-biz-card {
        padding: 24px 18px;
    }

    .biz-card-title {
        font-size: 16px;
    }

    .timber-adv-item {
        padding: 28px 20px;
    }

    .adv-title {
        font-size: 18px;
    }
}

/* ==================== 通用动画工具类 ==================== */
/* 淡入上移动画（可用于未来扩展） */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 通用过渡效果 */
.transition {
    transition: all 0.3s ease;
}

/* ==================== 补充：党建活动剪影真实照片 ==================== */
/* 党建活动照片：统一 4:3 等比裁剪展示 */
.gallery-img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    display: block;
    transition: transform 0.4s ease;
}

.gallery-item:hover .gallery-img {
    transform: scale(1.05);
}

/* ==================== 补充：货品分类堆叠相册 ==================== */
/*
 * 视觉说明：单个品类卡片内展示多张实拍图，堆叠成一叠照片；
 * 最上层为当前图，后两层错位露边形成"一叠照片"效果；
 * 鼠标点击图片翻阅下一张，悬停时显示左右箭头可前进/后退。
 */

/* 相册容器：在原图片容器基础上变为可点击 */
.cat-img-wrap.album-stack {
    position: relative;
    cursor: pointer;
    -webkit-user-select: none;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

/* 相册中的每一层照片 */
.cat-img-wrap .album-layer {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 74%;
    height: 74%;
    object-fit: cover;
    border: 3px solid #fff;
    border-radius: 4px;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.20);
    background: #e8eaed;
    transition: transform 0.45s ease, opacity 0.45s ease;
}

/* 后两层（错位露边，形成一叠照片的立体感） */
.cat-img-wrap .album-back-2 {
    transform: translate(-50%, -50%) rotate(9deg) translateX(18px) translateY(-6px);
    opacity: 0.8;
    z-index: 1;
}

.cat-img-wrap .album-back-1 {
    transform: translate(-50%, -50%) rotate(-7deg) translateX(-14px) translateY(-3px);
    opacity: 0.95;
    z-index: 2;
}

/* 最上层当前图 */
.cat-img-wrap .album-front {
    transform: translate(-50%, -50%);
    z-index: 3;
}

/* 覆盖原有"卡片hover放大"规则，避免干扰堆叠层的旋转/位移 */
.category-card:hover .cat-img-wrap img.album-back-2 {
    transform: translate(-50%, -50%) rotate(9deg) translateX(18px) translateY(-6px);
}

.category-card:hover .cat-img-wrap img.album-back-1 {
    transform: translate(-50%, -50%) rotate(-7deg) translateX(-14px) translateY(-3px);
}

.category-card:hover .cat-img-wrap img.album-front {
    transform: translate(-50%, -50%) translateY(-5px);
}

/* 翻阅切换动画 */
.cat-img-wrap .album-front.flipping {
    animation: albumFlip 0.4s ease;
}

@keyframes albumFlip {
    0%   { opacity: 0; transform: translate(-50%, -50%) rotate(-5deg) scale(0.96); }
    100% { opacity: 1; transform: translate(-50%, -50%) rotate(0deg) scale(1); }
}

/* 张数角标（如 1/10） */
.cat-img-wrap .album-count {
    position: absolute;
    right: 10px;
    bottom: 10px;
    z-index: 4;
    font-size: 12px;
    color: #fff;
    background: rgba(13, 37, 64, 0.72);
    padding: 2px 10px;
    border-radius: 20px;
    letter-spacing: 1px;
    pointer-events: none;
}

/* 左右翻阅箭头（悬停时显示） */
.cat-img-wrap .album-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 5;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: rgba(13, 37, 64, 0.55);
    color: #fff;
    font-size: 16px;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.25s ease, background 0.25s ease;
}

.cat-img-wrap .album-arrow:hover {
    background: rgba(200, 150, 62, 0.9);
}

.cat-img-wrap .album-arrow.album-prev { left: 8px; }
.cat-img-wrap .album-arrow.album-next { right: 8px; }

.cat-img-wrap.album-stack:hover .album-arrow {
    opacity: 1;
}