/* ============================================================
   Health Journal — 方案一：医学期刊经典 · 墨绿处方笺风
   医学期刊 / 处方笺视觉语言
   ============================================================ */

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

:root {
    --bg-primary: #F6F3EA;
    --bg-gradient-end: #F1EDE1;
    --bg-card: #FBF9F3;
    --bg-card-solid: #FBF9F3;
    --border-color: #D9DED6;
    --text-primary: #1F2A24;
    --text-secondary: #5F6B63;
    --text-muted: #8A948C;
    --text-body: #26332C;
    --white: #FFFFFF;
    --gold: #2A9D8F;
    --gold-dark: #17685B;
    --gold-light: #1F7A6B;
    --gold-border: #D9DED6;
    --gold-divider: rgba(42, 157, 143, 0.18);
    --nav-bg: #102A24;
    --breaking-bg: #B3261E;
    --footer-bg: #1F2A24;
    --nav-text: #F6F3EA;
    --nav-text-dim: #A7B0A8;
    --nav-border: rgba(246, 243, 234, 0.16);
    --nav-accent: #7FD1C6;
    --font-serif: 'Lora', 'Noto Serif SC', Georgia, serif;
    --font-sans: 'Source Sans 3', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    --font-en: 'Lora', Georgia, serif;
    --font-zh: 'Noto Serif SC', Georgia, serif;
    --radius: 0;
    --transition: 0.3s ease;
    --max-width: 1280px;
    --ticker-speed: 15s;
}

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

body {
    font-family: var(--font-serif);
    font-weight: 400;
    background-color: #F6F3EA;
    background-image:
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 31px,
            rgba(42, 157, 143, 0.045) 31px,
            rgba(42, 157, 143, 0.045) 32px
        ),
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 31px,
            rgba(42, 157, 143, 0.025) 31px,
            rgba(42, 157, 143, 0.025) 32px
        );
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.7;
    min-height: 100vh;
    animation: paperFade 0.6s ease-out;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

ul {
    list-style: none;
}

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

/* === 顶部导航栏 === */
.top-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--nav-bg);
    /* 底部压一条 2px 医疗青绿装饰线 */
    border-bottom: 2px solid var(--gold);
    height: 64px;
    display: flex;
    align-items: center;
}

.nav-inner {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

/* 徽章式 Logo：青绿双线方框 + 医学十字 */
.nav-logo-icon {
    width: 38px;
    height: 38px;
    background: transparent;
    border: 1px solid var(--gold);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    flex-shrink: 0;
    /* 医学十字：横竖两根医疗青绿细线 */
    background-image:
        linear-gradient(to right, var(--gold), var(--gold)),
        linear-gradient(to bottom, var(--gold), var(--gold));
    background-size: 46% 2px, 2px 46%;
    background-position: center center, center center;
    background-repeat: no-repeat, no-repeat;
    transition: border-color var(--transition), filter var(--transition);
}

.nav-logo-icon::before {
    content: '';
    position: absolute;
    inset: 3px;
    border: 1px solid rgba(42, 157, 143, 0.35);
    pointer-events: none;
}

.nav-logo-icon span {
    display: none;
}

.nav-logo-icon::after {
    content: none;
    display: none;
}

.nav-logo-icon:hover {
    border-color: var(--gold-light);
    filter: brightness(1.15);
}

.nav-logo-words {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.nav-logo-text {
    font-family: var(--font-serif);
    font-weight: 700;
    font-style: normal;
    font-size: 1.4rem;
    letter-spacing: 0.02em;
    color: var(--nav-text);
    text-transform: none;
}

/* 医学期刊报头式品牌名：深墨绿底上的暖米白，无流光动画 */
.logo-gold {
    background: none;
    -webkit-text-fill-color: var(--nav-text);
    color: var(--nav-text);
    animation: none;
}

.nav-logo-sub {
    font-family: var(--font-sans);
    font-weight: 400;
    font-size: 0.55rem;
    color: var(--nav-text-dim);
    letter-spacing: 0.3em;
    text-transform: uppercase;
    margin-bottom: 2px;
}

.nav-categories {
    display: flex;
    gap: 0;
    align-items: center;
}

.nav-cat-link {
    padding: 8px 18px;
    font-family: var(--font-sans);
    font-size: 0.78rem;
    font-weight: 400;
    letter-spacing: 1.5px;
    color: var(--nav-text);
    text-transform: uppercase;
    position: relative;
    transition: color var(--transition);
}

/* hover 时医疗青绿下划线从左到右展开，无背景色变化 */
.nav-cat-link::after {
    content: '';
    position: absolute;
    left: 18px;
    right: 18px;
    bottom: 4px;
    height: 2px;
    background: var(--gold);
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform 0.3s ease;
}

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

.nav-cat-link:hover::after,
.nav-cat-link.active::after {
    transform: scaleX(1);
}

/* 激活中的分类使用对应分类色下划线 */
.nav-cat-link.cat-trending.active::after { background: #2A9D8F; }
.nav-cat-link.cat-breaking.active::after { background: #B3261E; }
.nav-cat-link.cat-latest.active::after { background: #1F7A6B; }
.nav-cat-link.cat-mostread.active::after { background: #6E8577; }

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.nav-search {
    background: rgba(246, 243, 234, 0.06);
    border: 1px solid var(--nav-border);
    color: var(--nav-text);
    padding: 6px 12px;
    font-size: 0.78rem;
    font-family: var(--font-sans);
    width: 180px;
    outline: none;
    transition: border-color var(--transition);
}

.nav-search:focus {
    border-color: var(--gold);
}

.nav-search::placeholder {
    color: var(--nav-text-dim);
}

.nav-links-small {
    display: flex;
    gap: 12px;
    font-size: 0.72rem;
    letter-spacing: 0.05em;
}

.nav-links-small a {
    color: var(--nav-text-dim);
    transition: color var(--transition);
}

.nav-links-small a:hover {
    color: var(--nav-accent);
}

/* === 页面主体偏移（导航栏固定） === */
.page-content {
    padding-top: 64px;
}

/* === 突发快讯置顶模块 === */
.breaking-banner {
    background: var(--breaking-bg);
    border-bottom: 1px solid rgba(42, 157, 143, 0.5);
    padding: 0;
    overflow: hidden;
    scroll-margin-top: 80px;
}

.breaking-banner-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    height: 48px;
}

.breaking-label {
    background: var(--gold);
    color: #102A24;
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 0.7rem;
    letter-spacing: 2px;
    padding: 0 16px;
    height: 100%;
    display: flex;
    align-items: center;
    flex-shrink: 0;
    text-transform: uppercase;
}

.breaking-ticker {
    flex: 1;
    overflow: hidden;
    position: relative;
    height: 100%;
    display: flex;
    align-items: center;
}

.breaking-ticker-track {
    display: flex;
    animation: ticker-scroll var(--ticker-speed, 75s) linear infinite;
    white-space: nowrap;
}

.breaking-ticker-item {
    display: inline-flex;
    align-items: center;
    padding: 0 22px;
    color: #FFF8F0;
    font-family: var(--font-serif);
    font-size: 0.82rem;
    font-weight: 400;
    text-decoration: none;
    transition: color 0.2s ease;
}

/* 医学十字装饰符号 */
.breaking-ticker-item::before {
    content: '✚';
    color: var(--nav-accent);
    margin-right: 10px;
    font-size: 0.62rem;
}

.breaking-ticker-item:hover {
    color: #FFFFFF;
}

.breaking-ticker-item::after {
    content: '';
    margin-left: 0;
}

.breaking-ticker-item:last-child::after {
    content: '';
}

@keyframes ticker-scroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* === 分区标题 === */
#section-trending,
#section-latest {
    scroll-margin-top: 80px;
}

.section-header {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 36px 24px 16px;
    display: flex;
    align-items: center;
    gap: 14px;
    border-bottom: 1px solid var(--gold-divider);
    scroll-margin-top: 80px;
}

.section-header-icon {
    width: 3px;
    height: 26px;
    flex-shrink: 0;
}

.section-header-title {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--text-primary);
}

.section-header-count {
    font-family: var(--font-sans);
    font-size: 0.7rem;
    color: var(--text-secondary);
    font-weight: 400;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

/* === TRENDING 趋势热门区 === */
.trending-section {
    padding: 0 24px 24px;
}

.trending-grid {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

/* === 资讯卡片 === */
.news-card {
    background: var(--bg-card);
    border: 1px solid var(--gold-border);
    border-radius: var(--radius);
    box-shadow: none;
    transition: border-color var(--transition);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    animation: fadeIn 0.4s ease both;
}

.news-card:hover {
    border-color: var(--gold);
}

.news-card-image {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    border-bottom: 1px solid var(--border-color);
    transition: filter var(--transition);
}

.news-card:hover .news-card-image {
    filter: brightness(1.06);
}

.news-card-body {
    padding: 18px 16px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.news-card-category {
    display: inline-block;
    font-family: var(--font-sans);
    font-size: 0.6rem;
    font-weight: 500;
    letter-spacing: 1.5px;
    padding: 3px 9px;
    background: transparent;
    border: 1px solid var(--gold);
    color: var(--gold);
    text-transform: uppercase;
    align-self: flex-start;
    margin-bottom: 10px;
}

.news-card-title {
    font-family: var(--font-serif);
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.3;
    letter-spacing: 0.01em;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-card-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: auto;
    font-family: var(--font-sans);
    font-size: 0.66rem;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
}

.news-card-heat {
    font-weight: 500;
    font-size: 0.66rem;
    letter-spacing: 0.08em;
}

/* === LATEST + MOST READ 混合资讯区 === */
.mixed-section {
    padding: 0 24px 24px;
}

.mixed-grid {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.latest-column,
.mostread-column {
    display: flex;
    flex-direction: column;
    scroll-margin-top: 80px;
}

.column-title {
    font-family: var(--font-serif);
    font-size: 1.15rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    padding-bottom: 12px;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--gold-divider);
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-primary);
}

.column-title-bar {
    width: 3px;
    height: 18px;
    flex-shrink: 0;
}

/* 时间流列表项 */
.list-item {
    display: flex;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--gold-divider);
    transition: background var(--transition);
}

.list-item:hover {
    background: rgba(42, 157, 143, 0.05);
    margin: 0 -8px;
    padding-left: 8px;
    padding-right: 8px;
}

.list-item-thumb {
    width: 80px;
    height: 56px;
    object-fit: cover;
    flex-shrink: 0;
    border: 1px solid var(--gold-border);
}

.list-item-info {
    flex: 1;
    min-width: 0;
}

.list-item-cat {
    font-family: var(--font-sans);
    font-size: 0.58rem;
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 4px;
}

.list-item-title {
    font-family: var(--font-serif);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.list-item-meta {
    font-family: var(--font-sans);
    font-size: 0.62rem;
    color: var(--text-secondary);
    margin-top: 4px;
    letter-spacing: 0.05em;
}

/* 排行列表 */
.rank-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid var(--gold-divider);
    transition: background var(--transition);
}

.rank-item:hover {
    background: rgba(42, 157, 143, 0.05);
    margin: 0 -8px;
    padding-left: 8px;
    padding-right: 8px;
}

.rank-number {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-serif);
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-secondary);
    flex-shrink: 0;
    border: 1px solid var(--gold-border);
}

.rank-item:nth-child(1) .rank-number { color: var(--gold); border-color: var(--gold); }
.rank-item:nth-child(2) .rank-number { color: var(--gold-dark); }
.rank-item:nth-child(3) .rank-number { color: var(--text-muted); }

.rank-item-info {
    flex: 1;
    min-width: 0;
}

.rank-item-title {
    font-family: var(--font-serif);
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.rank-item-views {
    font-family: var(--font-sans);
    font-size: 0.62rem;
    color: var(--text-secondary);
    margin-top: 2px;
    letter-spacing: 0.05em;
}

/* === 底部数据概览栏 === */
.data-bar {
    background: var(--nav-bg);
    color: var(--nav-text);
    padding: 28px 24px;
    border-top: 2px solid var(--gold);
    border-bottom: 1px solid var(--nav-border);
}

.data-bar-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.data-stat {
    text-align: center;
    padding: 14px 12px;
    border: 1px solid var(--nav-border);
}

.data-stat-value {
    font-family: var(--font-serif);
    font-size: 2.1rem;
    font-weight: 700;
    line-height: 1;
    color: var(--gold);
}

.data-stat-label {
    font-family: var(--font-sans);
    font-size: 0.66rem;
    font-weight: 400;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    margin-top: 8px;
    color: var(--nav-text-dim);
}

/* === 页脚 === */
.site-footer {
    background: var(--footer-bg);
    color: var(--nav-text-dim);
    padding: 24px;
    text-align: center;
    font-family: var(--font-sans);
    font-size: 0.74rem;
    border-top: 2px solid var(--gold);
}

.site-footer .footer-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 12px;
}

.site-footer .footer-links a {
    color: var(--nav-text-dim);
    transition: color var(--transition);
}

.site-footer .footer-links a:hover {
    color: var(--gold);
}

/* ============================================================
   详情页样式
   ============================================================ */

.detail-nav {
    background: var(--nav-bg);
    border-bottom: 1px solid var(--gold-divider);
    height: 52px;
    position: sticky;
    top: 64px;
    z-index: 999;
}

.detail-nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.detail-nav-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.detail-nav-back {
    font-family: var(--font-sans);
    font-size: 0.78rem;
    font-weight: 400;
    color: var(--nav-text-dim);
    display: flex;
    align-items: center;
    gap: 4px;
    letter-spacing: 0.05em;
    transition: color var(--transition);
}

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


.detail-nav-btn {
    background: transparent;
    border: 1px solid var(--nav-border);
    padding: 5px 12px;
    font-size: 0.72rem;
    font-family: var(--font-sans);
    font-weight: 400;
    cursor: pointer;
    color: var(--nav-text-dim);
    transition: all var(--transition);
}

.detail-nav-btn:hover {
    border-color: var(--gold);
    color: var(--nav-accent);
}

/* 左右分栏 */
.detail-main {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 24px;
    display: grid;
    grid-template-columns: 70% 30%;
    gap: 24px;
}

.detail-content {
    background: var(--bg-card);
    border: 1px solid var(--gold-border);
    border-radius: var(--radius);
    padding: 40px;
}

.detail-category-tag {
    display: inline-block;
    font-family: var(--font-sans);
    font-size: 0.62rem;
    font-weight: 500;
    letter-spacing: 2px;
    padding: 4px 10px;
    background: transparent;
    border: 1px solid var(--gold);
    color: var(--gold);
    text-transform: uppercase;
    margin-bottom: 20px;
}

.detail-title {
    font-family: var(--font-serif);
    font-size: 2.25rem;
    font-weight: 900;
    color: var(--text-primary);
    line-height: 1.3;
    letter-spacing: -0.01em;
    margin-bottom: 14px;
}

.detail-meta-row {
    display: flex;
    align-items: center;
    gap: 16px;
    padding-top: 12px;
    padding-bottom: 20px;
    margin-bottom: 24px;
    border-top: 1px solid var(--gold-divider);
    border-bottom: 1px solid var(--gold-divider);
    font-family: var(--font-sans);
    font-size: 0.72rem;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
}

.detail-heat-badge {
    font-family: var(--font-sans);
    font-weight: 500;
    padding: 2px 8px;
    font-size: 0.66rem;
    letter-spacing: 0.08em;
}

.detail-image {
    width: 100%;
    margin-bottom: 28px;
    border: 1px solid var(--gold-border);
}

/* 杂志式文章正文 */
.detail-body {
    font-family: var(--font-serif);
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-body);
    font-weight: 400;
}

.detail-body p {
    margin-bottom: 18px;
}

/* 首字下沉：金色衬线 */
.detail-body > p:first-of-type::first-letter {
    font-family: var(--font-serif);
    font-weight: 700;
    color: var(--gold);
    font-size: 3.4rem;
    float: left;
    line-height: 0.9;
    margin: 6px 10px 0 0;
}

/* 引用块：医疗青绿实线 + 浅米白底 */
.detail-body blockquote {
    border-left: 4px solid var(--gold);
    background: var(--bg-card);
    padding: 12px 18px;
    margin: 18px 0;
    color: var(--text-primary);
    font-style: italic;
}

/* 正文超链接：香槟金 + hover 下划线 */
.detail-body a {
    color: var(--gold);
    transition: color var(--transition);
}

.detail-body a:hover {
    color: var(--gold-light);
    text-decoration: underline;
}

/* 右侧辅助面板 */
.detail-sidebar {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.sidebar-card {
    background: var(--bg-card);
    border: 1px solid var(--gold-border);
    border-radius: var(--radius);
    padding: 18px;
}

.sidebar-card-title {
    font-family: var(--font-sans);
    font-size: 0.66rem;
    font-weight: 500;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--gold-divider);
}

.sidebar-data-row {
    display: flex;
    justify-content: space-between;
    padding: 6px 0;
    font-family: var(--font-sans);
    font-size: 0.78rem;
    border-bottom: 1px solid var(--gold-divider);
    color: var(--text-secondary);
    letter-spacing: 0.03em;
}

.sidebar-data-row span:last-child {
    font-weight: 500;
    color: var(--text-primary);
}

.sidebar-mini-list {
    display: flex;
    flex-direction: column;
}

.sidebar-mini-item {
    padding: 8px 0;
    border-bottom: 1px solid var(--gold-divider);
    font-family: var(--font-serif);
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.35;
    transition: color var(--transition);
    display: -webkit-box;
    -webkit-box-orient: vertical;
    overflow: hidden;
    /* 短标题(<=35字): 大字号 + 2行上限 */
    font-size: 0.95rem;
    -webkit-line-clamp: 2;
}

.sidebar-mini-item.title-medium {
    /* 中等长度(36-55字): 中等字号 + 延长至3行 */
    font-size: 0.88rem;
    -webkit-line-clamp: 3;
}

.sidebar-mini-item.title-long {
    /* 长标题(>55字): 小字号 + 4行上限 */
    font-size: 0.82rem;
    -webkit-line-clamp: 4;
    line-height: 1.3;
}

.sidebar-mini-item:hover {
    color: var(--gold);
}

.sidebar-archive-btn {
    display: block;
    width: 100%;
    padding: 10px;
    text-align: center;
    background: transparent;
    color: var(--gold);
    font-family: var(--font-sans);
    font-size: 0.72rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    border: 1px solid var(--gold);
    cursor: pointer;
    transition: all var(--transition);
}

.sidebar-archive-btn:hover {
    background: var(--gold);
    color: #F6F3EA;
}

/* 底部关联推荐 */
.related-section {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px 32px;
}

.related-title {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    padding-bottom: 12px;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--gold-divider);
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.related-card {
    display: flex;
    gap: 10px;
    padding: 12px;
    background: var(--bg-card);
    border: 1px solid var(--gold-border);
    border-radius: var(--radius);
    transition: border-color var(--transition);
}

.related-card:hover {
    border-color: var(--gold);
}

.related-card-thumb {
    width: 60px;
    height: 42px;
    object-fit: cover;
    flex-shrink: 0;
}

.related-card-title {
    font-family: var(--font-serif);
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.35;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    overflow: hidden;
    /* 短标题(<=35字): 大字号 + 2行 */
    font-size: 0.92rem;
    -webkit-line-clamp: 2;
}

.related-card-title.title-medium {
    /* 中等长度(36-55字): 适中字号 + 2行 */
    font-size: 0.85rem;
    -webkit-line-clamp: 2;
}

.related-card-title.title-long {
    /* 长标题(>55字): 小字号 + 3行 */
    font-size: 0.8rem;
    -webkit-line-clamp: 3;
    line-height: 1.3;
}

/* === 评论区 === */
.comment-item {
    padding: 14px 0;
    border-bottom: 1px solid var(--gold-divider);
}
.comment-item-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 6px;
}
.comment-item-author {
    font-family: var(--font-sans);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-primary);
}
.comment-item-tag {
    font-family: var(--font-sans);
    font-size: 0.58rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    padding: 2px 7px;
    background: transparent;
    border: 1px solid;
    text-transform: uppercase;
}
.comment-item-body {
    font-family: var(--font-sans);
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-body);
    margin-bottom: 8px;
}
.comment-item-footer button {
    font-family: var(--font-sans);
    font-size: 0.66rem;
    font-weight: 400;
    letter-spacing: 0.08em;
    color: var(--text-secondary);
    background: transparent;
    border: 1px solid var(--gold-border);
    padding: 3px 9px;
    margin-right: 6px;
    cursor: pointer;
    transition: all var(--transition);
}
.comment-item-footer button:hover {
    color: var(--gold);
    border-color: var(--gold);
}

/* === 静态页面样式 === */
.static-page {
    max-width: 800px;
    margin: 0 auto;
    padding: 48px 24px;
}

.static-page h1 {
    font-family: var(--font-serif);
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}

.static-page .static-date {
    font-family: var(--font-sans);
    font-size: 0.78rem;
    color: var(--text-secondary);
    letter-spacing: 0.1em;
    margin-bottom: 32px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--gold-divider);
}

.static-page h2 {
    font-family: var(--font-serif);
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-top: 32px;
    margin-bottom: 12px;
}

.static-page p {
    font-family: var(--font-serif);
    font-size: 0.98rem;
    line-height: 1.85;
    color: var(--text-body);
    margin-bottom: 16px;
}

.static-page a {
    color: var(--gold);
    text-decoration: underline;
    transition: color var(--transition);
}

.static-page a:hover {
    color: var(--text-primary);
    text-decoration: underline;
}

/* === 动效：淡入 / 纸张淡入 / 边框微亮 === */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 纸张淡入：模拟纸张展开 */
@keyframes paperFade {
    from { opacity: 0.98; }
    to { opacity: 1; }
}

@keyframes breathe {
    0%, 100% { border-color: var(--border-color); }
    50% { border-color: var(--gold); }
}

/* 精选卡片边框微亮（可用于强调卡片） */
.card-featured {
    animation: breathe 3s ease-in-out infinite;
}

/* 偏好减少动效的用户：禁用非必要动画 */
@media (prefers-reduced-motion: reduce) {
    body,
    .card-featured,
    .breaking-ticker-track {
        animation: none;
    }
}

/* === 响应式适配 === */

/* 平板端 (769px - 1024px) */
@media (max-width: 1024px) {
    .nav-cat-link {
        padding: 8px 12px;
        font-size: 0.7rem;
    }
    .nav-search {
        width: 130px;
    }
    .trending-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .detail-main {
        grid-template-columns: 62% 38%;
        gap: 16px;
    }
    .detail-content {
        padding: 28px;
    }
    .detail-title {
        font-size: 1.9rem;
    }
    .detail-nav-btn {
        padding: 4px 8px;
        font-size: 0.68rem;
    }
    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .data-bar-inner {
        gap: 16px;
    }
}

/* 手机端 (481px - 768px) */
@media (max-width: 768px) {
    html {
        font-size: 15px;
    }

    /* 导航栏：仅保留徽章 Logo + 汉堡菜单 */
    .top-nav {
        height: 56px;
    }
    .nav-inner {
        padding: 0 14px;
    }
    .nav-logo-icon {
        width: 32px;
        height: 32px;
    }
    .nav-logo-icon::after {
        font-size: 1.1rem;
    }
    .nav-logo-text {
        font-size: 1.15rem;
    }
    .nav-logo-sub {
        font-size: 0.5rem;
        letter-spacing: 0.25em;
    }
    .nav-categories {
        display: none;
    }
    .nav-search {
        display: none;
    }
    .nav-links-small {
        display: none;
    }

    /* 汉堡菜单按钮 */
    .nav-hamburger {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        width: 40px;
        height: 40px;
        cursor: pointer;
        gap: 5px;
        z-index: 1001;
        background: none;
        border: none;
        padding: 0;
    }
    .nav-hamburger span {
        display: block;
        width: 22px;
        height: 2px;
        background: var(--gold);
        transition: all 0.25s ease;
        transform-origin: center;
    }
    .nav-hamburger.active span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }
    .nav-hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    .nav-hamburger.active span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    /* 移动端下拉菜单：深蓝黑底 + 金色高亮 */
    .nav-mobile-menu {
        position: fixed;
        top: 56px;
        left: 0;
        right: 0;
        background: var(--nav-bg);
        border-bottom: 1px solid var(--gold-border);
        display: flex;
        flex-direction: column;
        padding: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease, padding 0.3s ease;
        z-index: 999;
    }
    .nav-mobile-menu.open {
        max-height: 360px;
        padding: 8px 0;
    }
    .nav-mobile-menu a {
        padding: 12px 20px;
        font-family: var(--font-sans);
        font-size: 0.8rem;
        font-weight: 400;
        letter-spacing: 1px;
        color: var(--nav-text);
        text-transform: uppercase;
        border-left: 3px solid transparent;
        transition: all 0.15s ease;
    }
    .nav-mobile-menu a:hover,
    .nav-mobile-menu a.active {
        color: var(--nav-accent);
        background: rgba(42, 157, 143, 0.12);
    }
    .nav-mobile-menu a.m-cat-trending { border-left-color: #2A9D8F; }
    .nav-mobile-menu a.m-cat-breaking { border-left-color: #B3261E; }
    .nav-mobile-menu a.m-cat-latest { border-left-color: #1F7A6B; }
    .nav-mobile-menu a.m-cat-mostread { border-left-color: #6E8577; }
    .nav-mobile-menu a.m-link-static {
        font-size: 0.72rem;
        font-weight: 400;
        letter-spacing: 0.08em;
        color: var(--nav-text-dim);
        border-left-color: var(--nav-border);
    }

    .page-content {
        padding-top: 56px;
    }

    /* 移动端锚点偏移量 */
    .breaking-banner {
        scroll-margin-top: 60px;
    }
    #section-trending,
    #section-latest {
        scroll-margin-top: 60px;
    }
    .section-header {
        scroll-margin-top: 60px;
    }
    .mostread-column {
        scroll-margin-top: 60px;
    }

    /* 突发快讯 */
    .breaking-banner-inner {
        height: 40px;
    }
    .breaking-label {
        font-size: 0.62rem;
        padding: 0 10px;
    }
    .breaking-ticker-item {
        font-size: 0.72rem;
        padding: 0 14px;
    }

    /* 分区标题 */
    .section-header {
        padding: 24px 14px 10px;
    }
    .section-header-title {
        font-size: 1.25rem;
    }
    .section-header-count {
        font-size: 0.62rem;
    }

    /* TRENDING 网格 */
    .trending-section {
        padding: 0 14px 16px;
    }
    .trending-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    .news-card-title {
        font-size: 1rem;
    }

    /* LATEST + MOST READ */
    .mixed-section {
        padding: 0 14px 16px;
    }
    .mixed-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .list-item-thumb {
        width: 70px;
        height: 50px;
    }

    /* 底部数据栏：移动端 2×2 网格 */
    .data-bar {
        padding: 18px 14px;
    }
    .data-bar-inner {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    .data-stat-value {
        font-size: 1.6rem;
    }
    .data-stat-label {
        font-size: 0.62rem;
    }

    /* 页脚 */
    .site-footer {
        padding: 20px 14px;
    }
    .site-footer .footer-links {
        flex-wrap: wrap;
        gap: 12px;
    }

    /* ======= 详情页移动端 ======= */
    .detail-nav {
        height: auto;
        position: sticky;
        top: 56px;
    }
    .detail-nav-inner {
        padding: 8px 14px;
        flex-wrap: wrap;
        gap: 8px;
    }
    .detail-nav-left {
        flex: 1;
        min-width: 0;
    }
    .detail-nav-back {
        font-size: 0.74rem;
    }
    .detail-nav-btn {
        padding: 5px 8px;
        font-size: 0.66rem;
        flex: 0 0 auto;
    }

    /* 左右分栏 -> 通栏 */
    .detail-main {
        grid-template-columns: 1fr;
        padding: 14px;
        gap: 14px;
    }
    .detail-content {
        padding: 20px;
    }
    .detail-title {
        font-size: 1.75rem;
    }
    .detail-meta-row {
        flex-wrap: wrap;
        gap: 8px;
        font-size: 0.7rem;
    }
    .detail-heat-badge {
        font-size: 0.64rem;
        padding: 2px 6px;
    }
    .detail-body {
        font-size: 1rem;
        line-height: 1.8;
    }
    .detail-body p {
        margin-bottom: 14px;
    }
    .detail-body > p:first-of-type::first-letter {
        font-size: 2.8rem;
    }

    /* 右侧面板移到底部后 */
    .detail-sidebar {
        gap: 12px;
    }
    .sidebar-card {
        padding: 14px;
    }
    .sidebar-card-title {
        font-size: 0.64rem;
    }
    .sidebar-data-row {
        font-size: 0.76rem;
    }
    .sidebar-mini-item {
        font-size: 0.9rem;
        -webkit-line-clamp: 2;
        padding: 7px 0;
    }
    .sidebar-mini-item.title-medium {
        font-size: 0.84rem;
        -webkit-line-clamp: 3;
    }
    .sidebar-mini-item.title-long {
        font-size: 0.78rem;
        -webkit-line-clamp: 4;
    }

    /* 关联推荐 */
    .related-section {
        padding: 0 14px 24px;
    }
    .related-grid {
        grid-template-columns: 1fr;
        gap: 8px;
    }
    .related-card {
        padding: 10px;
    }

    /* 静态页面 */
    .static-page {
        padding: 28px 16px;
    }
    .static-page h1 {
        font-size: 1.6rem;
    }
    .static-page h2 {
        font-size: 1.2rem;
        margin-top: 24px;
    }
    .static-page p {
        font-size: 0.92rem;
    }
}

/* 小屏手机 (<= 480px) */
@media (max-width: 480px) {
    html {
        font-size: 14px;
    }

    .top-nav {
        height: 52px;
    }
    .nav-logo-icon {
        width: 28px;
        height: 28px;
    }
    .nav-logo-icon::after {
        font-size: 1rem;
    }
    .nav-logo-text {
        font-size: 1.05rem;
    }
    .nav-logo-sub {
        font-size: 0.46rem;
        letter-spacing: 0.2em;
    }

    .nav-mobile-menu {
        top: 52px;
    }

    .page-content {
        padding-top: 52px;
    }

    /* 小屏手机锚点偏移量 */
    .breaking-banner {
        scroll-margin-top: 55px;
    }
    #section-trending,
    #section-latest {
        scroll-margin-top: 55px;
    }
    .section-header {
        scroll-margin-top: 55px;
    }
    .mostread-column {
        scroll-margin-top: 55px;
    }

    .breaking-banner-inner {
        height: 36px;
    }
    .breaking-label {
        font-size: 0.58rem;
        padding: 0 8px;
    }
    .breaking-ticker-item {
        font-size: 0.68rem;
        padding: 0 10px;
    }

    .section-header {
        padding: 20px 12px 8px;
    }
    .section-header-title {
        font-size: 1.1rem;
    }
    .section-header-icon {
        height: 20px;
        width: 3px;
    }

    .trending-section {
        padding: 0 12px 12px;
    }
    .mixed-section {
        padding: 0 12px 12px;
    }
    .news-card-body {
        padding: 14px 12px;
    }
    .news-card-title {
        font-size: 0.95rem;
    }

    .list-item {
        gap: 8px;
    }
    .list-item-thumb {
        width: 60px;
        height: 44px;
    }
    .list-item-title {
        font-size: 0.9rem;
    }

    .data-bar {
        padding: 14px 10px;
    }
    .data-stat {
        padding: 10px 8px;
    }
    .data-stat-value {
        font-size: 1.4rem;
    }

    .detail-main {
        padding: 10px;
        gap: 10px;
    }
    .detail-content {
        padding: 16px;
    }
    .detail-title {
        font-size: 1.5rem;
    }
    .detail-meta-row {
        gap: 6px;
        font-size: 0.66rem;
    }
    .detail-body {
        font-size: 0.95rem;
    }
    .detail-nav {
        top: 52px;
    }
    .detail-nav-inner {
        padding: 6px 12px;
    }

    .related-section {
        padding: 0 12px 20px;
    }

    .site-footer {
        padding: 16px 12px;
        font-size: 0.7rem;
    }
    .site-footer .footer-links {
        gap: 8px;
        font-size: 0.68rem;
    }

    .static-page {
        padding: 20px 14px;
    }
    .static-page h1 {
        font-size: 1.4rem;
    }
    .static-page h2 {
        font-size: 1.1rem;
    }
    .static-page p {
        font-size: 0.88rem;
    }

    /* 广告位在小屏缩小 */
    [id^="adv"] > div:last-child {
        min-width: 250px !important;
        min-height: 200px !important;
    }
}

/* 默认隐藏汉堡菜单（桌面端） */
@media (min-width: 769px) {
    .nav-hamburger {
        display: none;
    }
    .nav-mobile-menu {
        display: none;
    }
}