/* ===== 全局重置 & 变量 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-dark: #155E60;
    --primary-teal: #1EA1A2;
    --primary-teal-hover: #178788;
    --teal-light: #7AF0F2;
    --teal-rgb: 30, 161, 162;
    --teal-alpha-10: rgba(var(--teal-rgb), 0.1);
    --teal-alpha-15: rgba(var(--teal-rgb), 0.15);
    --teal-alpha-20: rgba(var(--teal-rgb), 0.2);
    --teal-alpha-25: rgba(var(--teal-rgb), 0.25);
    --teal-alpha-30: rgba(var(--teal-rgb), 0.3);
    --teal-alpha-50: rgba(var(--teal-rgb), 0.5);
    --white: #ffffff;
    --light-gray: #F4F7FA;
    --medium-gray: #e6edf4;
    --text-dark: #155E60;
    --text-body: #2c3e50;
    --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.06);
    --radius: 12px;
    --transition: all 0.25s ease;
    --font-sans: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--white);
    color: var(--text-body);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

ul {
    list-style: none;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== 按钮 ===== */
.btn-primary {
    display: inline-block;
    background: var(--primary-teal);
    color: var(--white);
    font-weight: 600;
    padding: 10px 28px;
    border-radius: 40px;
    border: none;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 10px var(--teal-alpha-20);
}

.btn-primary:hover {
    background: var(--primary-teal-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px var(--teal-alpha-30);
}

.btn-outline {
    display: inline-block;
    background: transparent;
    color: var(--white);
    font-weight: 600;
    padding: 10px 28px;
    border-radius: 40px;
    border: 1.5px solid var(--white);
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
}

.btn-outline:hover {
    background: var(--white);
    color: var(--primary-dark);
}

.btn-outline-dark {
    border-color: var(--primary-dark);
    color: var(--primary-dark);
}

.btn-outline-dark:hover {
    background: var(--primary-dark);
    color: var(--white);
}

/* ===== 头部 / 导航 ===== */
.navbar {
    background: var(--white);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    padding: 14px 0;
    position: sticky;
    top: 0;
    z-index: 999;
    backdrop-filter: blur(4px);
    background: rgba(255, 255, 255, 0.92);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
}

/* ---- LOGO 图片 ---- */
.logo-img {
    height: 35px;
    width: auto;
    display: block;
}

/* ---- LOGO ---- */
.logo {
    display: flex;
    align-items: baseline;
    gap: 4px;
    font-weight: 700;
    font-size: 1.4rem;
    color: var(--primary-dark);
    letter-spacing: 0.5px;
}

.logo .brand-name {
    font-weight: 700;
    color: var(--primary-dark);
}

.logo .brand-name i {
    color: var(--primary-teal);
    font-size: 1.6rem;
    margin-right: 6px;
}

.logo .brand-sub {
    font-weight: 300;
    font-size: 0.85rem;
    color: var(--primary-teal);
    letter-spacing: 2px;
    margin-left: 6px;
    padding-left: 8px;
    border-left: 1.5px solid var(--medium-gray);
}

@media (max-width: 480px) {
    .logo {
        font-size: 1.15rem;
        flex-wrap: wrap;
    }
    .logo .brand-sub {
        font-size: 0.7rem;
        border-left: none;
        padding-left: 0;
        margin-left: 0;
        width: 100%;
    }
}

/* ---- 导航菜单 ---- */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 28px;
    font-weight: 500;
    font-size: 0.95rem;
    /* 撑满导航内容区高度，保证下拉菜单可从导航栏底部对齐 */
    align-self: stretch;
}

.nav-menu a {
    color: var(--text-dark);
    transition: var(--transition);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--primary-teal);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    opacity: 1;
}

.nav-menu a:hover {
    color: var(--primary-teal);
}

.nav-cta {
    margin-left: 4px;
}

/* ---- 下拉菜单（业务板块 / 最新动态） ---- */
.nav-item {
    position: relative;
    /* 撑满导航高度：使内部链接与普通导航项高度一致，蓝色条对齐 */
    align-self: stretch;
    display: flex;
    align-items: center;
}

.nav-item > a {
    display: block;
}

.dropdown-arrow {
    font-size: 0.7rem;
    margin-left: 4px;
    color: inherit;
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 14px); /* 14px = navbar 底部 padding，从导航栏底部开始显示 */
    left: 50%;
    min-width: 0;
    width: max-content;
    max-width: 240px;
    background: var(--white);
    border: 1px solid var(--medium-gray);
    border-radius: 10px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateX(-50%) translateY(8px);
    transition: all 0.2s ease;
    z-index: 100;
}

.nav-item:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.dropdown-menu a {
    display: block;
    padding: 10px 20px;
    color: var(--text-dark);
    font-size: 0.9rem;
    white-space: nowrap;
}

.dropdown-menu a::after {
    display: none; /* 下拉项不使用下划线动画 */
}

.dropdown-menu a:hover {
    color: var(--primary-teal);
    background: var(--teal-alpha-10);
}

.hamburger {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--primary-dark);
}

@media (max-width: 920px) {
    .nav-menu {
        display: none;
        width: 100%;
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
        padding: 20px 0 12px;
        border-top: 1px solid var(--medium-gray);
        margin-top: 12px;
    }
    .nav-menu.open {
        display: flex;
    }
    .nav-item {
        width: 100%;
    }
    /* 移动端下拉菜单静态展开，无需悬停 */
    .dropdown-menu {
        position: static;
        transform: none;
        opacity: 1;
        visibility: visible;
        min-width: 0;
        width: 100%;
        background: transparent;  /* 汉堡菜单内不显示白底卡片 */
        box-shadow: none;
        border: none;
        border-radius: 0;
        padding: 4px 0 0 16px;
    }
    /* 覆盖桌面悬停规则：移动端下拉为静态展开，
       悬停时不得再套用 translateX(-50%) 使整列左移出屏 */
    .nav-item:hover .dropdown-menu {
        transform: none;
    }
    .dropdown-menu a {
        padding: 8px 12px;
        white-space: normal;
    }
    .hamburger {
        display: block;
    }
    .nav-cta {
        margin-left: 0;
    }
    .nav-cta .btn-primary {
        /* 移动端按钮宽度自适应文字，不撑满屏幕 */
        display: inline-block;
        width: auto;
    }
}

/* ===== 通用 section 标题 ===== */
.section-title {
    font-size: 2.1rem;
    font-weight: 700;
    color: var(--primary-dark);
    letter-spacing: -0.01em;
    margin-bottom: 0.5rem;
}

.section-sub {
    color: #5a6f8c;
    font-size: 1.05rem;
    max-width: 640px;
}

.section-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    margin-bottom: 48px;
}

/* ===== Hero 区 ===== */
.hero {
    background: linear-gradient(135deg, #1A6B6D 0%, #2E8C8E 100%);
    color: var(--white);
    padding: 60px 0 80px;
    position: relative;
    overflow: hidden;
}

.hero::after {
    content: '';
    position: absolute;
    right: -10%;
    top: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--teal-alpha-15) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero .container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.hero-content h1 {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.hero-content h1 .highlight {
    color: var(--teal-light);
}

.hero-content p {
    font-size: 1.1rem;
    opacity: 0.85;
    max-width: 480px;
}

/* Hero 副标语（标题下第一行） */
.hero-content .hero-slogan {
    font-size: 1.3rem;
    font-weight: 600;
    color: #ffffff;
    opacity: 1;
    margin-bottom: 10px;
}

/* Hero 描述文字：与按钮区保留间距 */
.hero-content .hero-desc {
    margin-bottom: 28px;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 40px;
    background: rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(4px);
    border-radius: var(--radius);
    padding: 20px 24px;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

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

.hero-stats .stat-number {
    font-size: 1.8rem;
    font-weight: 700;
    display: block;
    color: #fff;
}

.hero-stats .stat-label {
    font-size: 0.9rem;
    opacity: 0.7;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-visual i {
    font-size: 12rem;
    color: rgba(255, 255, 255, 0.1);
}

.hero-grid-icon {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    width: 100%;
}

.hero-grid-icon .icon-box {
    background: rgba(255, 255, 255, 0.06);
    border-radius: var(--radius);
    padding: 24px 16px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.hero-grid-icon .icon-box i {
    font-size: 2rem;
    color: var(--teal-light);
    margin-bottom: 12px;
}

/* 模块名 */
.hero-grid-icon .box-title {
    display: block;
    font-size: 1.1rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 6px;
}

/* 功能描述（分行显示） */
.hero-grid-icon .box-desc {
    display: block;
    font-size: 0.8rem;
    line-height: 1.5;
    opacity: 0.78;
    color: #ffffff;
}

/* 了解详情 */
.hero-grid-icon .box-more {
    display: block;
    font-size: 0.8rem;
    color: var(--teal-light);
    margin-top: 10px;
    font-weight: 500;
}

@media (max-width: 820px) {
    .hero .container {
        grid-template-columns: 1fr;
    }
    .hero-content h1 {
        font-size: 2.4rem;
    }
    .hero-stats {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ===== 业务概览 (首页卡片) ===== */
.section-services {
    padding: 72px 0 80px;
    background: var(--light-gray);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
    gap: 24px;
    margin-top: 12px;
}

.service-card {
    background: var(--light-gray);
    border-radius: var(--radius);
    padding: 28px 16px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid transparent;
    cursor: default;
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-teal);
    background: var(--white);
}

.service-card i {
    font-size: 2.4rem;
    color: var(--primary-teal);
    margin-bottom: 12px;
}

.service-card h4 {
    font-weight: 600;
    color: var(--primary-dark);
    font-size: 1rem;
}

/* ===== 业务卡片链接（/services/xxx 入口）===== */
a.placeholder-card,
a.service-card,
a.icon-box {
    display: block;
    cursor: pointer;
}

a.placeholder-card {
    transition: var(--transition);
}

a.placeholder-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-sm);
}

a.icon-box {
    transition: var(--transition);
}

a.icon-box:hover {
    border-color: var(--teal-light);
}

.service-link {
    color: var(--primary-teal);
    text-decoration: underline;
    transition: var(--transition);
}

.service-link:hover {
    color: var(--primary-teal-hover);
}

/* ===== 业务覆盖地图 ===== */
.section-map {
    padding: 72px 0 80px;
    background: var(--light-gray);
}

/* ===== 关于预览 (首页) ===== */
.section-about-preview {
    background: var(--white);
    padding: 72px 0 80px;
}

/* 首页关于文字排版 */
.about-intro {
    max-width: 860px;
    margin: 0 auto 24px;
    text-align: justify;
    color: #3d5775;
    font-size: 1.1rem;
    line-height: 1.6;
}

.about-intro p {
    margin-bottom: 10px;
}

.about-intro p:last-child {
    margin-bottom: 0;
}

/* 业务成果高亮 */
.about-intro .about-highlight {
    text-align: center;
    font-size: 1.1rem;
    color: #2c3e50;
    background: var(--teal-alpha-10);
    border-left: 4px solid var(--primary-teal);
    padding: 16px 24px;
    border-radius: 0 10px 10px 0;
    margin-top: 8px;
}

.about-intro .about-highlight strong {
    color: var(--primary-teal);
    font-weight: 700;
}

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

.about-text h2 {
    font-size: 2rem;
    color: var(--primary-dark);
    margin-bottom: 16px;
}

.about-text p {
    margin-bottom: 20px;
    color: #3d5775;
}

.about-image {
    background: var(--medium-gray);
    border-radius: var(--radius);
    height: 240px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #7a8aa0;
    font-size: 1rem;
    border: 1px dashed #bcc9db;
}

.about-image i {
    font-size: 3rem;
    margin-right: 12px;
    color: var(--primary-teal);
}

@media (max-width: 760px) {
    .about-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== 最新动态 (首页) ===== */
.section-news {
    padding: 72px 0 80px;
    background: var(--white);
}

.news-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 28px;
}

.news-item {
    display: block;
    border-bottom: 1px solid var(--medium-gray);
    padding-bottom: 16px;
    transition: var(--transition);
}

.news-item:hover {
    border-bottom-color: var(--primary-teal);
}

/* 链接形式的新闻条目（可点击跳详情） */
.news-item-link:hover h4 {
    color: var(--primary-teal);
}

/* 分类标签行：标签与右侧图标按盒子垂直中点对齐 */
.news-item .news-tag-line {
    display: inline-flex;
    align-items: center;
    margin-bottom: 8px;
}

.news-item .tag {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary-teal);
    background: #d5f5f5;
    padding: 2px 12px;
    border-radius: 20px;
}

/* 微信来源：分类标签同行右侧的绿色公众号小图标（其余来源不显示） */
.news-item .wx-ico {
    display: inline-block;
    font-size: 0.87rem;
    color: #07c160;
    margin-left: 12px;
}

/* 转发文章标题结尾的跳转链接小图标 */
.news-item .external-ico {
    font-size: 0.8em;
    margin-left: 6px;
    color: var(--primary-teal);
    opacity: 0.8;
    vertical-align: 0.125em;
}

.news-item h4 {
    color: var(--primary-dark);
    font-weight: 600;
    margin-bottom: 4px;
}

.news-item .date {
    font-size: 0.85rem;
    color: #7a8aa0;
}

/* ===== 页脚 ===== */
.footer {
    background: #1A6B6D;
    color: rgba(255, 255, 255, 0.7);
    padding: 48px 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.6fr;
    gap: 24px;
    margin-bottom: 40px;
}

/* 浏览器宽度够大：公司媒体与前面4列同行 */
.footer-media-cell {
    min-width: 0;
}

.footer-brand p {
    max-width: 260px;
    margin-top: 12px;
    font-size: 0.9rem;
    opacity: 0.8;
}

/* 浏览器宽度不够 → 公司媒体占据整行，换到下一行 */
@media (max-width: 1150px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }
    .footer-media-cell {
        grid-column: 1 / -1;
    }
}

.footer-brand .logo {
    color: var(--white);
    font-size: 1.4rem;
}

/* 页脚深色背景下的品牌名需要白色 */
.footer-brand .logo .brand-name {
    color: var(--white);
}

.footer-brand .logo .brand-name i {
    color: var(--teal-light);
}

.footer-brand .logo .brand-sub {
    border-left-color: rgba(255, 255, 255, 0.2);
    color: var(--teal-light);
}

.footer h5 {
    color: var(--white);
    font-weight: 600;
    margin-bottom: 16px;
    font-size: 1rem;
}

.footer ul li {
    margin-bottom: 8px;
    font-size: 0.9rem;
}

.footer ul li a:hover {
    color: var(--white);
}

@media (max-width: 800px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 500px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== 内部页面通用 ===== */
.page-placeholder {
    padding: 40px 0 80px;
    background: var(--white);
}

.page-placeholder .container {
    max-width: 1200px;
}

.page-placeholder h1 {
    font-size: 2.6rem;
    color: var(--primary-dark);
    margin-bottom: 16px;
}

.page-placeholder p {
    font-size: 1.1rem;
    color: #3d5775;
    margin-bottom: 24px;
}

.placeholder-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
    margin: 32px 0;
}

.placeholder-card {
    background: var(--light-gray);
    border-radius: var(--radius);
    padding: 28px 20px;
    text-align: center;
}

.placeholder-card i {
    font-size: 2rem;
    color: var(--primary-teal);
    margin-bottom: 8px;
}

.placeholder-card h4 {
    color: var(--primary-dark);
}

/* ===== 新闻列表分页 ===== */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 32px;
    flex-wrap: wrap;
}

.page-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 38px;
    height: 38px;
    padding: 0 8px;
    border: 1px solid var(--medium-gray);
    background: var(--white);
    color: var(--primary-dark);
    border-radius: 10px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
}

.page-btn:hover:not(:disabled) {
    background: var(--primary-teal);
    color: #ffffff;
    border-color: var(--primary-teal);
}

.page-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.page-btn-go {
    padding: 0 14px;
}

.page-info {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 0 10px;
    font-size: 0.9rem;
    color: var(--text-dark);
}

.page-info input {
    width: 52px;
    height: 34px;
    text-align: center;
    border: 1px solid var(--medium-gray);
    border-radius: 8px;
    font-size: 0.9rem;
    color: var(--primary-dark);
    outline: none;
    -moz-appearance: textfield;
}

.page-info input::-webkit-outer-spin-button,
.page-info input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.page-info input:focus {
    border-color: var(--primary-teal);
}

/* 分页总条数 */
.page-total {
    font-size: 0.85rem;
    color: #7a8aa0;
    margin-left: 4px;
    white-space: nowrap;
}

/* 每页条数选择框 */
.page-size-select {
    height: 38px;
    padding: 0 30px 0 10px; /* 右侧留空间给下拉箭头 */
    border: 1px solid var(--medium-gray);
    border-radius: 10px;
    background-color: var(--white);
    /* 自定义下拉箭头（空心 V 形），距右边 12px */
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'><path d='M1 1l4 4 4-4' fill='none' stroke='%236b7a8f' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/></svg>");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 10px 6px;
    color: var(--primary-dark);
    font-size: 0.85rem;
    cursor: pointer;
    outline: none;
    transition: var(--transition);
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

.page-size-select:hover {
    border-color: var(--primary-teal);
}

.page-size-select:focus {
    border-color: var(--primary-teal);
}

/* ===== 联系我们首页区块 ===== */
.section-contact {
    padding: 72px 0 80px;
    background: var(--white);
}

/* 联系我们保持和其他模块一致的宽度 */
.section-contact .container {
    max-width: 1200px;
}

/* ===== 联系方式网格 ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.6fr;
    gap: 40px;
    margin-top: 24px;
}

@media (max-width: 700px) {
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== 在线留言表单 ===== */
.contact-form {
    background: var(--light-gray);
    padding: 36px 40px;
    border-radius: var(--radius);
    margin-top: 28px;
}

.contact-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #d5dee8;
    border-radius: 8px;
    font-family: inherit;
    background: var(--white);
    transition: var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary-teal);
    box-shadow: 0 0 0 3px var(--teal-alpha-10);
}

.contact-form .full-width {
    grid-column: 1 / -1;
}

.contact-form .btn-primary {
    margin-top: 8px;
}

/* 必填项红色星号 */
.form-field.required {
    position: relative;
}

.form-field.required input::placeholder {
    /* placeholder 末尾已有标记无需额外星号 */
}

.form-field.required::after {
    content: '*';
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: #e74c3c;
    font-weight: 700;
    font-size: 1rem;
    pointer-events: none;
}

@media (max-width: 600px) {
    .contact-form .form-row {
        grid-template-columns: 1fr;
    }
}

/* ===== 首页右侧锚点导航线 ===== */
.section-nav {
    position: fixed;
    right: 24px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 800;
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.nav-dot {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    position: relative;
    padding: 8px;
    margin: -8px;
}

.nav-dot span {
    display: block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--teal-alpha-25);
    transition: var(--transition);
    flex-shrink: 0;
}

.nav-dot:hover span,
.nav-dot.active span {
    background: var(--primary-teal);
    box-shadow: 0 0 8px var(--teal-alpha-50);
    transform: scale(1.3);
}

.nav-dot::after {
    content: attr(data-label);
    position: absolute;
    right: 30px;
    top: 50%;
    transform: translateY(-50%);
    white-space: nowrap;
    font-size: 0.9rem;
    color: var(--text-dark);
    background: rgba(255, 255, 255, 0.94);
    padding: 4px 14px;
    border-radius: 6px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
}

.nav-dot:hover::after,
.nav-dot.active::after {
    opacity: 1;
}

@media (max-width: 768px) {
    .section-nav {
        display: none;
    }
}

/* ===== 公司媒体二维码 ===== */
.media-qrcodes {
    display: flex;
    flex-wrap: nowrap;
    gap: 16px;
    justify-content: center;
    margin-top: 4px;
}

.media-item {
    text-align: center;
    flex-shrink: 0;
}

.media-item img {
    width: 100px;
    height: 100px;
    border-radius: 8px;
    border: 2px solid rgba(255, 255, 255, 0.15);
    object-fit: cover;
    margin-bottom: 6px;
}

.media-item span {
    display: block;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.6);
}

/* 屏幕极窄时二维码纵向排列 */
@media (max-width: 450px) {
    .media-qrcodes {
        flex-wrap: wrap;
    }
}

/* ===== 页脚备案 ===== */
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    flex-wrap: wrap;
    text-align: center;
}

.footer-beian {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 8px 16px;
}

.beian-links {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.beian-links a {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.85rem;
    transition: var(--transition);
}

.beian-links a:hover {
    color: var(--white);
}

.beian-links i {
    margin-right: 2px;
}

/* 公安联网备案警徽图标 */
.beian-police-icon {
    /* 覆盖全局 img{display:block}，保持图标与备案号同一行 */
    display: inline-block;
    height: 16px;
    width: auto;
    margin-right: 5px;
    vertical-align: -3px;
}

.beian-sep {
    color: rgba(255, 255, 255, 0.2);
}

.footer-social {
    display: flex;
    justify-content: center;
}

.footer-social a {
    margin: 0 8px;
    color: rgba(255, 255, 255, 0.5);
    transition: var(--transition);
}

.footer-social a:hover {
    color: var(--white);
}

@media (min-width: 600px) {
    .footer-bottom {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}

/* ===== 新闻详情页 ===== */
.news-detail {
    padding: 40px 0 80px;
    background: var(--white);
}

/* 详情页容器与全站一致（继承 .container 的 max-width: 1200px），不再单独收窄 */

.news-detail-header {
    text-align: center;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--medium-gray);
    margin-bottom: 24px;
}

.news-detail-title {
    font-size: 1.9rem;
    font-weight: 700;
    color: var(--primary-dark);
    line-height: 1.4;
    margin-bottom: 16px;
}

.news-detail-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
}

.news-detail-meta .tag {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary-teal);
    background: #d5f5f5;
    padding: 3px 14px;
    border-radius: 20px;
}

.news-detail-meta .date {
    font-size: 0.9rem;
    color: #7a8aa0;
}

/* 字号切换工具栏 */
.font-size-toolbar {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    margin-bottom: 20px;
}

.toolbar-label {
    font-size: 0.9rem;
    color: #7a8aa0;
    margin-right: 4px;
}

.font-btn {
    min-width: 36px;
    padding: 6px 12px;
    border: 1px solid #d5dee8;
    border-radius: 6px;
    background: var(--white);
    color: var(--primary-dark);
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
}

.font-btn.active {
    background: var(--primary-teal);
    color: var(--white);
    border-color: var(--primary-teal);
}

.font-btn:hover {
    border-color: var(--primary-teal);
    color: var(--primary-teal);
}

.font-btn.active:hover {
    color: var(--white);
}

/* 正文 */
.news-detail-body {
    font-size: 17px;
    line-height: 1.9;
    color: #2c3e50;
}

.detail-paragraph,
.news-detail-body p {
    text-indent: 2em;      /* 每段句首空两格 */
    margin-bottom: 20px;
    text-align: justify;
}

.detail-figure {
    margin: 24px auto;
    text-align: center;
    max-width: 100%;
}

.detail-figure img {
    max-width: 100%;
    border-radius: 8px;
    margin: 0 auto;
}

.detail-caption {
    margin-top: 10px;
    font-size: 0.8rem;
    color: #7a8aa0;
    line-height: 1.5;
}

/* PDF 阅读器 */
.detail-pdf {
    margin: 28px 0;
    border: 1px solid var(--medium-gray);
    border-radius: 12px;
    overflow: hidden;
    background: #f8fafc;
}

.pdf-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 12px 18px;
    font-size: 0.894em;  /* =0.95rem≈15.2px，相对正文字号，随字号切换缩放 */
    font-weight: 600;
    color: var(--primary-dark);
    background: #eef4f8;
    border-bottom: 1px solid var(--medium-gray);
}

.pdf-title i {
    color: #e74c3c;
    font-size: 1.035em;  /* =1.1rem≈17.6px */
}

.pdf-title-text {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
}

.pdf-download-btn {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 14px;
    font-size: 0.8em;  /* =0.85rem≈13.6px，随字号切换缩放 */
    font-weight: 500;
    color: var(--primary-teal);
    border: 1px solid var(--primary-teal);
    border-radius: 20px;
    transition: var(--transition);
}

.pdf-download-btn:hover {
    background: var(--primary-teal);
    color: var(--white);
}

.pdf-download-btn i {
    color: inherit;
    font-size: 0.847em;  /* =0.9rem≈14.4px */
}

.pdf-viewer {
    display: block;
    width: 100%;
    height: 720px;
    border: none;
    background: #ffffff;
}

.pdf-body {
    background: #ffffff;
}

/* PDF 文件说明标注 */
.pdf-note {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    margin: 14px 18px 18px;
    padding: 10px 14px;
    font-size: 0.847em;  /* =0.9rem≈14.4px，随字号切换缩放 */
    line-height: 1.6;
    color: #4a5f7c;
    background: #eef4f8;
    border-left: 4px solid var(--primary-teal);
    border-radius: 0 8px 8px 0;
}

.pdf-note i {
    color: var(--primary-teal);
    font-size: 0.941em;  /* =1rem≈16px，随字号切换缩放 */
    margin-top: 2px;
}

.pdf-note-text {
    flex: 1;
}

/* ===== Markdown 渲染正文元素 ===== */
.news-detail-body h1,
.news-detail-body h2,
.news-detail-body h3 {
    color: var(--primary-dark);
    line-height: 1.4;
    margin: 28px 0 14px;
    font-weight: 600;
}

.news-detail-body h1 { font-size: 1.7rem; }
.news-detail-body h2 { font-size: 1.4rem; }
.news-detail-body h3 { font-size: 1.2rem; }

.news-detail-body blockquote {
    margin: 20px 0;
    padding: 10px 20px;
    border-left: 4px solid var(--primary-teal);
    background: var(--teal-alpha-10);
    color: var(--primary-dark);
    border-radius: 0 8px 8px 0;
}

.news-detail-body ul,
.news-detail-body ol {
    margin: 0 0 20px;
    padding-left: 2em;
}

.news-detail-body li {
    margin-bottom: 6px;
    line-height: 1.8;
}

.news-detail-body a {
    color: var(--primary-teal);
    text-decoration: underline;
}

.news-detail-body code {
    background: #eef1f5;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.9em;
}

/* ===== 正文图片点击预览大图 ===== */
.news-detail-body img.zoomable {
    cursor: zoom-in;
}

.image-preview-overlay {
    position: fixed;
    inset: 0;
    z-index: 99999;
    background: rgba(0, 0, 0, 0.88);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    cursor: zoom-out;
    overflow: hidden; /* 放大后裁剪超出视口的部分 */
}

.image-preview-overlay img {
    max-width: 92vw;
    max-height: 92vh;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
    cursor: zoom-out;
}

.news-detail-body pre {
    background: #2d3748;
    color: #e2e8f0;
    padding: 16px;
    border-radius: 8px;
    overflow-x: auto;
    margin: 20px 0;
}

.news-detail-body pre code {
    background: transparent;
    padding: 0;
    color: inherit;
}


@media (max-width: 768px) {
    .pdf-viewer {
        height: 520px;
    }
}

/* PDF 不支持内联时的下载提示 */
.pdf-fallback {
    padding: 48px 24px;
    text-align: center;
    background: #f8fafc;
}

.pdf-fallback p {
    margin-bottom: 24px;
    color: #5a6f8c;
    font-size: 0.988em;  /* =1.05rem≈16.8px，随字号切换缩放 */
}

/* 覆盖 .news-detail-body a 的文字颜色/下划线，避免按钮文字与背景同色不可见 */
.pdf-fallback .btn-primary {
    color: var(--white);
    text-decoration: none;
}

.news-detail-back {
    margin-top: 40px;
    text-align: center;
}

@media (max-width: 600px) {
    .news-detail-title {
        font-size: 1.5rem;
    }
    .news-detail-body {
        font-size: 16px;
    }
    .font-size-toolbar {
        justify-content: center;
    }
}

/* ===== 工具类 ===== */
.mt-16 {
    margin-top: 16px;
}

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


.gap-8 {
    gap: 8px;
}

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

.mb-12 {
    margin-bottom: 12px;
}