/* ========================================
   主样式表 - 明星绯闻新闻视频网站
   移动优先响应式设计
   ======================================== */

/* CSS变量 */
:root {
  --primary: #dc3250;
  --primary-dark: #b0283f;
  --secondary: #1a1a2e;
  --accent: #f5a623;
  --bg-dark: #0f0f1a;
  --bg-card: #1c1c30;
  --bg-card-hover: #252540;
  --text-primary: #f0f0f5;
  --text-secondary: #a0a0b8;
  --text-muted: #6a6a80;
  --border-color: #2a2a45;
  --gradient-1: linear-gradient(135deg, #dc3250 0%, #f5a623 100%);
  --gradient-2: linear-gradient(135deg, #1a1a2e 0%, #2d2d50 100%);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --font-main: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.75;
  min-height: 100vh;
  overflow-x: hidden;
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.25s ease;
}

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

/* 容器 */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
}

/* ========== 顶部导航 ========== */
.site-header {
  background: var(--secondary);
  border-bottom: 2px solid var(--primary);
  padding: 12px 0;
  position: relative;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

.site-logo img {
  height: 42px;
  width: auto;
}

.site-logo span {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-left: 8px;
}

/* 汉堡菜单 */
.menu-toggle {
  display: block;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.menu-toggle span {
  display: block;
  width: 26px;
  height: 3px;
  background: var(--text-primary);
  margin: 5px 0;
  border-radius: 2px;
  transition: transform 0.3s ease;
}

.main-nav {
  display: none;
  width: 100%;
  padding-top: 10px;
}

.main-nav.active {
  display: block;
}

.main-nav ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.main-nav li a {
  display: block;
  padding: 10px 14px;
  color: var(--text-primary);
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
  transition: background 0.2s ease;
}

.main-nav li a:hover,
.main-nav li a.active {
  background: var(--primary);
  color: #fff;
}

/* 桌面导航 */
@media (min-width: 768px) {
  .menu-toggle {
    display: none;
  }
  .main-nav {
    display: block;
    width: auto;
    padding-top: 0;
  }
  .main-nav ul {
    flex-direction: row;
    gap: 4px;
  }
  .main-nav li a {
    padding: 8px 14px;
    font-size: 0.9rem;
  }
}

/* ========== Hero区域 ========== */
.hero-section {
  position: relative;
  overflow: hidden;
  padding: 40px 0;
  background: var(--gradient-2);
}

.hero-section::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: url("../images/hero-banner.webp") center/cover no-repeat;
  opacity: 0.25;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 30px 16px;
}

.hero-content h1 {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.3;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-content p {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto 24px;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--gradient-1);
  color: #fff;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 1.05rem;
  font-weight: 600;
  box-shadow: var(--shadow-md);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.hero-cta:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: #fff;
}

@media (min-width: 768px) {
  .hero-content h1 {
    font-size: 2.6rem;
  }
  .hero-content p {
    font-size: 1.15rem;
  }
}

/* ========== 面包屑 ========== */
.breadcrumb {
  padding: 12px 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.breadcrumb a {
  color: var(--text-secondary);
}

.breadcrumb span {
  margin: 0 6px;
}

/* ========== 通用区块 ========== */
.section {
  padding: 40px 0;
}

.section-alt {
  background: var(--bg-card);
}

.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 3px solid var(--primary);
  display: inline-block;
}

.section-title::after {
  content: "";
  display: block;
  width: 60px;
  height: 3px;
  background: var(--accent);
  margin-top: 6px;
}

@media (min-width: 768px) {
  .section {
    padding: 60px 0;
  }
  .section-title {
    font-size: 1.8rem;
  }
}

/* ========== 视频卡片网格 ========== */
.video-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 480px) {
  .video-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .video-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
}

@media (min-width: 1024px) {
  .video-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.video-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  border: 1px solid var(--border-color);
}

.video-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}

.video-card .thumb-wrap {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
}

.video-card .thumb-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.video-card:hover .thumb-wrap img {
  transform: scale(1.05);
}

.video-card .play-overlay {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 50px; height: 50px;
  background: rgba(220,50,80,0.85);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease;
}

.video-card .play-overlay::after {
  content: "";
  display: block;
  width: 0; height: 0;
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent #fff;
  margin-left: 3px;
}

.video-card:hover .play-overlay {
  background: rgba(245,166,35,0.9);
}

.video-card .card-body {
  padding: 14px;
}

.video-card .card-body h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 6px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-card .card-body .meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  gap: 12px;
}

/* ========== 视频播放模块 ========== */
.video-player-section {
  background: #000;
  padding: 30px 0;
}

.video-player-wrap {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  aspect-ratio: 16/9;
  background: #111;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
}

.video-player-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video-player-wrap .big-play {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 80px; height: 80px;
  background: rgba(220,50,80,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 30px rgba(220,50,80,0.5);
  transition: transform 0.2s ease;
}

.video-player-wrap:hover .big-play {
  transform: translate(-50%, -50%) scale(1.1);
}

.video-player-wrap .big-play::after {
  content: "";
  display: block;
  width: 0; height: 0;
  border-style: solid;
  border-width: 16px 0 16px 28px;
  border-color: transparent transparent transparent #fff;
  margin-left: 5px;
}

.video-player-info {
  max-width: 800px;
  margin: 20px auto 0;
  text-align: center;
}

.video-player-info h2 {
  font-size: 1.3rem;
  margin-bottom: 10px;
}

.video-player-info p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ========== 投稿模块 ========== */
.submit-section {
  background: var(--gradient-2);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 30px 20px;
  margin: 20px 0;
}

.submit-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 600px;
  margin: 0 auto;
}

.submit-form input,
.submit-form textarea,
.submit-form select {
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: var(--font-main);
  transition: border-color 0.2s ease;
}

.submit-form input:focus,
.submit-form textarea:focus {
  outline: none;
  border-color: var(--primary);
}

.submit-form textarea {
  min-height: 120px;
  resize: vertical;
}

.btn-submit {
  background: var(--gradient-1);
  color: #fff;
  border: none;
  padding: 14px 24px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease;
}

.btn-submit:hover {
  transform: translateY(-2px);
}

/* ========== 评论模块 ========== */
.review-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 640px) {
  .review-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .review-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: border-color 0.2s ease;
}

.review-card:hover {
  border-color: var(--accent);
}

.review-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.review-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--primary);
}

.review-name {
  font-weight: 600;
  font-size: 0.95rem;
}

.review-city {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.review-stars {
  color: var(--accent);
  font-size: 1.1rem;
  margin-bottom: 8px;
  letter-spacing: 2px;
}

.review-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.review-date {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 10px;
}

/* ========== 专家评论 ========== */
.expert-comment {
  background: var(--bg-card);
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 20px;
  margin: 16px 0;
}

.expert-comment .expert-info {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.expert-comment .expert-info img {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  border: 2px solid var(--accent);
}

.expert-comment .expert-info .name {
  font-weight: 700;
  font-size: 1rem;
}

.expert-comment .expert-info .title {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.expert-comment blockquote {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-style: italic;
  line-height: 1.8;
}

/* ========== 授权模块 ========== */
.auth-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  text-align: center;
}

.auth-section .badge-img {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  border: 3px solid var(--accent);
  object-fit: cover;
}

.auth-section .auth-text {
  max-width: 700px;
}

.auth-section .auth-code {
  background: var(--bg-dark);
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-family: monospace;
  color: var(--accent);
  margin-top: 10px;
  display: inline-block;
}

@media (min-width: 768px) {
  .auth-section {
    flex-direction: row;
    text-align: left;
  }
}

/* ========== FAQ ========== */
.faq-list {
  max-width: 800px;
}

.faq-item {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  background: var(--bg-card);
  cursor: pointer;
  font-weight: 600;
  font-size: 0.95rem;
  transition: background 0.2s ease;
}

.faq-question:hover {
  background: var(--bg-card-hover);
}

.faq-question::after {
  content: "+";
  font-size: 1.3rem;
  color: var(--primary);
  transition: transform 0.3s ease;
}

.faq-item.open .faq-question::after {
  transform: rotate(45deg);
}

.faq-answer {
  display: none;
  padding: 16px 20px;
  background: var(--bg-dark);
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.8;
}

.faq-item.open .faq-answer {
  display: block;
}

/* ========== 新闻模块 ========== */
.news-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.news-item {
  display: flex;
  gap: 16px;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: border-color 0.2s ease;
}

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

.news-item .news-thumb {
  flex-shrink: 0;
  width: 120px;
  height: 90px;
  object-fit: cover;
}

@media (min-width: 640px) {
  .news-item .news-thumb {
    width: 180px;
    height: 120px;
  }
}

.news-item .news-body {
  padding: 12px 12px 12px 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.news-item .news-body h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 6px;
  line-height: 1.4;
}

.news-item .news-body .news-excerpt {
  font-size: 0.82rem;
  color: var(--text-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-item .news-body .news-date {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 6px;
}

/* ========== 关于我们 ========== */
.about-content {
  max-width: 800px;
}

.about-content p {
  margin-bottom: 16px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.9;
}

.about-content h3 {
  font-size: 1.2rem;
  margin: 24px 0 12px;
  color: var(--text-primary);
}

/* ========== 客户支持 ========== */
.support-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 640px) {
  .support-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .support-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.support-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.support-card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
}

.support-card .icon {
  font-size: 2rem;
  margin-bottom: 12px;
  display: block;
}

.support-card h4 {
  font-size: 1rem;
  margin-bottom: 8px;
}

.support-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ========== 页脚 ========== */
.site-footer {
  background: var(--secondary);
  border-top: 2px solid var(--primary);
  padding: 40px 0 20px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  margin-bottom: 30px;
}

@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.footer-col h4 {
  font-size: 1rem;
  margin-bottom: 14px;
  color: var(--text-primary);
  position: relative;
  padding-bottom: 8px;
}

.footer-col h4::after {
  content: "";
  position: absolute;
  bottom: 0; left: 0;
  width: 40px; height: 2px;
  background: var(--primary);
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 8px;
}

.footer-col ul li a {
  color: var(--text-secondary);
  font-size: 0.88rem;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.footer-col ul li a:hover {
  color: var(--primary);
  padding-left: 4px;
}

.footer-social {
  display: flex;
  gap: 12px;
  margin-top: 10px;
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  background: var(--bg-dark);
  border-radius: 50%;
  transition: background 0.2s ease;
}

.footer-social a:hover {
  background: var(--primary);
}

.footer-social a img {
  width: 20px; height: 20px;
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 20px;
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.footer-bottom a {
  color: var(--text-secondary);
}

/* ========== 内页样式 ========== */
.page-banner {
  position: relative;
  padding: 40px 0;
  background: var(--gradient-2);
  overflow: hidden;
}

.page-banner::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  opacity: 0.2;
  z-index: 0;
}

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

.page-banner h1 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.page-banner p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

@media (min-width: 768px) {
  .page-banner h1 {
    font-size: 2.2rem;
  }
}

.content-area {
  padding: 30px 0;
}

.content-area article {
  max-width: 800px;
}

.content-area article h2 {
  font-size: 1.4rem;
  margin: 28px 0 14px;
  color: var(--text-primary);
  border-left: 4px solid var(--primary);
  padding-left: 14px;
}

.content-area article h3 {
  font-size: 1.15rem;
  margin: 20px 0 10px;
  color: var(--text-primary);
}

.content-area article p {
  margin-bottom: 16px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.9;
}

.content-area article img {
  border-radius: var(--radius-md);
  margin: 20px 0;
  width: 100%;
}

.content-area article ul,
.content-area article ol {
  margin: 12px 0 16px 20px;
  color: var(--text-secondary);
}

.content-area article li {
  margin-bottom: 8px;
  line-height: 1.7;
}

/* ========== APP下载页面 ========== */
.app-download-hero {
  text-align: center;
  padding: 50px 16px;
  background: var(--gradient-2);
}

.app-download-hero h1 {
  font-size: 1.8rem;
  margin-bottom: 16px;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.app-download-hero p {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 30px;
}

.app-download-hero .app-preview {
  max-width: 400px;
  margin: 0 auto 30px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.download-btns {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}

@media (min-width: 480px) {
  .download-btns {
    flex-direction: row;
    justify-content: center;
  }
}

.download-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--primary);
  color: #fff;
  padding: 14px 28px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  transition: background 0.2s ease, transform 0.2s ease;
}

.download-btn:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  color: #fff;
}

.download-btn.alt {
  background: var(--accent);
}

.download-btn.alt:hover {
  background: #d89520;
}

/* ========== 作者信息 ========== */
.author-box {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  margin: 24px 0;
}

.author-box img {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 2px solid var(--primary);
}

.author-box .author-info h4 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.author-box .author-info p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0;
}

/* ========== 评分 ========== */
.rating-stars {
  color: var(--accent);
  letter-spacing: 2px;
}

.rating-score {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
}

/* ========== 侧边栏 ========== */
.sidebar {
  margin-top: 30px;
}

@media (min-width: 1024px) {
  .content-with-sidebar {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 30px;
  }
  .sidebar {
    margin-top: 0;
  }
}

.sidebar-widget {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 20px;
}

.sidebar-widget h3 {
  font-size: 1.05rem;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--primary);
}

.sidebar-widget ul {
  list-style: none;
}

.sidebar-widget ul li {
  padding: 8px 0;
  border-bottom: 1px solid var(--border-color);
}

.sidebar-widget ul li:last-child {
  border-bottom: none;
}

.sidebar-widget ul li a {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ========== 动画 ========== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-in {
  animation: fadeInUp 0.5s ease forwards;
}

/* ========== 工具类 ========== */
.text-center { text-align: center; }
.text-primary { color: var(--primary); }
.text-accent { color: var(--accent); }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }

/* 隐藏溢出文本 */
.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.line-clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 视觉稳定性 */
img, video {
  aspect-ratio: attr(width) / attr(height);
}

.thumb-wrap {
  aspect-ratio: 16/9;
}