/* =============================================
   黑料 - 主样式文件
   Brand: 黑料 | Domain: y3979l.cn
   ============================================= */

/* ---------- CSS 变量 ---------- */
:root {
  --primary: #e8436a;
  --primary-dark: #c0304f;
  --primary-light: #f9d0d9;
  --secondary: #ff8c42;
  --accent: #6c3fc5;
  --dark: #1a1a2e;
  --dark-2: #16213e;
  --dark-3: #0f3460;
  --text: #2d2d2d;
  --text-light: #666;
  --text-muted: #999;
  --bg: #fff;
  --bg-soft: #fdf6f8;
  --bg-card: #fff;
  --border: #f0dde3;
  --shadow: 0 4px 24px rgba(232,67,106,0.10);
  --shadow-hover: 0 8px 40px rgba(232,67,106,0.18);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --transition: 0.28s cubic-bezier(.4,0,.2,1);
  --font-main: 'PingFang SC','Microsoft YaHei','Hiragino Sans GB',sans-serif;
  --font-title: 'PingFang SC','Microsoft YaHei',serif;
}

/* ---------- 重置 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-main);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ---------- 排版 ---------- */
h1,h2,h3,h4,h5,h6 { font-family: var(--font-title); line-height: 1.3; color: var(--dark); font-weight: 700; }
h1 { font-size: clamp(1.8rem, 4vw, 3rem); }
h2 { font-size: clamp(1.4rem, 3vw, 2.2rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.5rem); }
p { margin-bottom: 0.8em; }

/* ---------- 工具类 ---------- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section { padding: 72px 0; }
.section-sm { padding: 48px 0; }
.text-center { text-align: center; }
.text-primary { color: var(--primary); }
.bg-soft { background: var(--bg-soft); }
.bg-dark { background: var(--dark); color: #fff; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }
.gap-3 { gap: 24px; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.hidden { display: none; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 11px 28px; border-radius: 50px; font-size: 0.95rem;
  font-weight: 600; transition: all var(--transition); cursor: pointer;
  border: 2px solid transparent;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff; border-color: transparent;
  box-shadow: 0 4px 16px rgba(232,67,106,0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(232,67,106,0.4);
  color: #fff;
}
.btn-outline {
  border-color: var(--primary); color: var(--primary); background: transparent;
}
.btn-outline:hover { background: var(--primary); color: #fff; }
.btn-sm { padding: 7px 18px; font-size: 0.85rem; }
.btn-white { background: #fff; color: var(--primary); border-color: #fff; }
.btn-white:hover { background: var(--primary-light); color: var(--primary-dark); }

/* ---------- 标题区 ---------- */
.section-header { text-align: center; margin-bottom: 48px; }
.section-header .label {
  display: inline-block; padding: 4px 16px; border-radius: 50px;
  background: var(--primary-light); color: var(--primary);
  font-size: 0.82rem; font-weight: 700; letter-spacing: 1px;
  text-transform: uppercase; margin-bottom: 12px;
}
.section-header h2 { margin-bottom: 12px; }
.section-header p { color: var(--text-light); max-width: 560px; margin: 0 auto; }
.divider {
  width: 48px; height: 4px; border-radius: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  margin: 16px auto 0;
}

/* ---------- 顶部公告条 ---------- */
.top-bar {
  background: linear-gradient(90deg, var(--dark), var(--dark-3));
  color: rgba(255,255,255,0.85); font-size: 0.8rem;
  padding: 7px 0; text-align: center;
}
.top-bar a { color: var(--secondary); }
.top-bar .marquee { display: inline-block; animation: marquee 30s linear infinite; white-space: nowrap; }
@keyframes marquee { 0%{transform:translateX(100vw)} 100%{transform:translateX(-100%)} }

/* ---------- 导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 16px rgba(0,0,0,0.06);
}
.header-inner {
  display: flex; align-items: center; gap: 24px;
  padding: 14px 0; min-height: 68px;
}
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo img { width: 44px; height: 44px; border-radius: 50%; object-fit: cover; }
.logo-text { font-size: 1.5rem; font-weight: 800; background: linear-gradient(135deg,var(--primary),var(--secondary)); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.logo-sub { font-size: 0.7rem; color: var(--text-muted); display: block; margin-top: -4px; }

.main-nav { flex: 1; }
.main-nav ul { display: flex; gap: 4px; align-items: center; }
.main-nav a {
  padding: 7px 14px; border-radius: var(--radius-sm);
  font-size: 0.92rem; font-weight: 500; color: var(--text);
  transition: all var(--transition); white-space: nowrap;
}
.main-nav a:hover, .main-nav a.active { color: var(--primary); background: var(--primary-light); }
.main-nav .has-sub { position: relative; }
.main-nav .sub-menu {
  position: absolute; top: calc(100% + 8px); left: 0;
  background: #fff; border-radius: var(--radius); min-width: 160px;
  box-shadow: var(--shadow-hover); border: 1px solid var(--border);
  opacity: 0; visibility: hidden; transform: translateY(-8px);
  transition: all var(--transition); z-index: 100;
}
.main-nav .has-sub:hover .sub-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.main-nav .sub-menu a { display: block; padding: 10px 16px; border-radius: 0; font-size: 0.88rem; }
.main-nav .sub-menu a:hover { background: var(--bg-soft); }

/* 搜索框 */
.header-search { display: flex; align-items: center; gap: 0; }
.header-search input {
  border: 1.5px solid var(--border); border-right: none;
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  padding: 7px 14px; font-size: 0.88rem; outline: none;
  width: 180px; transition: border-color var(--transition);
  font-family: var(--font-main);
}
.header-search input:focus { border-color: var(--primary); }
.header-search button {
  background: var(--primary); color: #fff; border: none;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 7px 14px; font-size: 0.9rem; cursor: pointer;
  transition: background var(--transition);
}
.header-search button:hover { background: var(--primary-dark); }

/* 搜索下拉 */
.search-dropdown {
  position: absolute; top: 100%; left: 0; right: 0;
  background: #fff; border: 1px solid var(--border);
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  box-shadow: var(--shadow); z-index: 200;
  display: none;
}
.search-wrap { position: relative; }
.search-dropdown ul { padding: 8px 0; }
.search-dropdown li a { display: block; padding: 9px 16px; font-size: 0.88rem; color: var(--text-light); }
.search-dropdown li a:hover { background: var(--bg-soft); color: var(--primary); }

.header-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }

/* 汉堡菜单 */
.hamburger { display: none; flex-direction: column; gap: 5px; padding: 6px; }
.hamburger span { width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: all var(--transition); }

/* ---------- 英雄区 ---------- */
.hero {
  position: relative; min-height: 88vh;
  display: flex; align-items: center;
  overflow: hidden; background: var(--dark);
}
.hero-bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  background-repeat: no-repeat;
  filter: brightness(0.45);
  transform: scale(1.04);
  transition: transform 8s ease;
}
.hero:hover .hero-bg { transform: scale(1.0); }
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(26,26,46,0.7) 0%, rgba(232,67,106,0.25) 100%);
}
.hero-content {
  position: relative; z-index: 2;
  color: #fff; max-width: 680px;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,0.12); backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 50px; padding: 6px 16px;
  font-size: 0.82rem; font-weight: 600; color: #fff;
  margin-bottom: 20px;
}
.hero-badge .dot { width: 8px; height: 8px; border-radius: 50%; background: #4ade80; animation: pulse 2s infinite; }
@keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:0.6;transform:scale(1.3)} }
.hero h1 { font-size: clamp(2rem, 5vw, 3.6rem); line-height: 1.15; margin-bottom: 20px; color: #fff; }
.hero h1 span { background: linear-gradient(135deg, var(--primary), var(--secondary)); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.hero p { font-size: 1.05rem; color: rgba(255,255,255,0.8); margin-bottom: 32px; max-width: 520px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 32px; margin-top: 48px; }
.hero-stat { text-align: center; }
.hero-stat .num { font-size: 1.8rem; font-weight: 800; color: #fff; display: block; }
.hero-stat .num span { color: var(--secondary); }
.hero-stat .label { font-size: 0.8rem; color: rgba(255,255,255,0.6); }
.hero-scroll {
  position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%);
  z-index: 2; color: rgba(255,255,255,0.6); font-size: 0.8rem;
  display: flex; flex-direction: column; align-items: center; gap: 8px;
}
.hero-scroll .arrow { width: 20px; height: 20px; border-right: 2px solid rgba(255,255,255,0.5); border-bottom: 2px solid rgba(255,255,255,0.5); transform: rotate(45deg); animation: bounce 1.6s infinite; }
@keyframes bounce { 0%,100%{transform:rotate(45deg) translateY(0)} 50%{transform:rotate(45deg) translateY(6px)} }

/* ---------- 搜索区（导航下方） ---------- */
.nav-search-bar {
  background: linear-gradient(90deg, var(--bg-soft), #fff);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}
.nav-search-inner {
  display: flex; align-items: center; gap: 12px;
  justify-content: center;
}
.nav-search-inner .search-label { font-size: 0.88rem; color: var(--text-light); white-space: nowrap; }
.nav-search-form {
  display: flex; max-width: 560px; width: 100%;
  border: 2px solid var(--primary); border-radius: 50px; overflow: hidden;
  background: #fff; box-shadow: 0 2px 12px rgba(232,67,106,0.12);
}
.nav-search-form input {
  flex: 1; border: none; outline: none; padding: 10px 20px;
  font-size: 0.92rem; font-family: var(--font-main); background: transparent;
}
.nav-search-form button {
  background: var(--primary); color: #fff; border: none;
  padding: 10px 24px; font-size: 0.92rem; font-weight: 600;
  cursor: pointer; transition: background var(--transition); white-space: nowrap;
}
.nav-search-form button:hover { background: var(--primary-dark); }
.search-hot-tags { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.search-hot-tags span { font-size: 0.8rem; color: var(--text-muted); }
.search-hot-tags a {
  font-size: 0.8rem; color: var(--text-light); padding: 3px 10px;
  border-radius: 50px; border: 1px solid var(--border);
  transition: all var(--transition);
}
.search-hot-tags a:hover { color: var(--primary); border-color: var(--primary); background: var(--primary-light); }

/* ---------- 视频卡片 ---------- */
.video-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 24px; }
.video-card {
  background: var(--bg-card); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow);
  transition: all var(--transition); cursor: pointer;
}
.video-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.video-thumb {
  position: relative; aspect-ratio: 16/9; overflow: hidden;
  background: var(--dark-2);
}
.video-thumb img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform var(--transition);
}
.video-card:hover .video-thumb img { transform: scale(1.06); }
.video-play-btn {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: rgba(0,0,0,0.35);
  opacity: 0; transition: opacity var(--transition);
}
.video-card:hover .video-play-btn { opacity: 1; }
.play-icon {
  width: 56px; height: 56px; border-radius: 50%;
  background: rgba(255,255,255,0.95);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  transform: scale(0.85); transition: transform var(--transition);
}
.video-card:hover .play-icon { transform: scale(1); }
.play-icon::after {
  content: ''; width: 0; height: 0;
  border-top: 10px solid transparent; border-bottom: 10px solid transparent;
  border-left: 18px solid var(--primary); margin-left: 4px;
}
.video-duration {
  position: absolute; bottom: 8px; right: 8px;
  background: rgba(0,0,0,0.7); color: #fff;
  font-size: 0.75rem; padding: 2px 7px; border-radius: 4px;
}
.video-tag {
  position: absolute; top: 8px; left: 8px;
  background: var(--primary); color: #fff;
  font-size: 0.72rem; padding: 3px 9px; border-radius: 4px; font-weight: 600;
}
.video-info { padding: 16px; }
.video-info h4 { font-size: 0.95rem; margin-bottom: 8px; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.video-meta { display: flex; align-items: center; gap: 12px; font-size: 0.78rem; color: var(--text-muted); }
.video-meta .views::before { content: '▶ '; }
.video-meta .likes::before { content: '♥ '; color: var(--primary); }
.video-meta .comments::before { content: '💬 '; }

/* ---------- 功能卡片 ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 24px; }
.feature-card {
  background: var(--bg-card); border-radius: var(--radius-lg);
  padding: 32px 24px; text-align: center;
  border: 1.5px solid var(--border);
  transition: all var(--transition);
  position: relative; overflow: hidden;
}
.feature-card::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, var(--primary-light), transparent);
  opacity: 0; transition: opacity var(--transition);
}
.feature-card:hover { border-color: var(--primary); transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 68px; height: 68px; border-radius: 20px; margin: 0 auto 20px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.8rem;
  background: linear-gradient(135deg, var(--primary-light), #fff);
  box-shadow: 0 4px 16px rgba(232,67,106,0.15);
  position: relative; z-index: 1;
}
.feature-card h3 { font-size: 1.05rem; margin-bottom: 10px; position: relative; z-index: 1; }
.feature-card p { font-size: 0.88rem; color: var(--text-light); position: relative; z-index: 1; }

/* ---------- 专家卡片 ---------- */
.expert-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 28px; }
.expert-card {
  background: var(--bg-card); border-radius: var(--radius-lg);
  padding: 28px 20px; text-align: center;
  box-shadow: var(--shadow); transition: all var(--transition);
  border: 1.5px solid transparent;
}
.expert-card:hover { border-color: var(--primary); transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.expert-avatar {
  width: 88px; height: 88px; border-radius: 50%; margin: 0 auto 16px;
  object-fit: cover; border: 3px solid var(--primary-light);
  box-shadow: 0 4px 16px rgba(232,67,106,0.2);
}
.expert-card h3 { font-size: 1rem; margin-bottom: 4px; }
.expert-role { font-size: 0.8rem; color: var(--primary); font-weight: 600; margin-bottom: 10px; }
.expert-desc { font-size: 0.82rem; color: var(--text-light); margin-bottom: 14px; line-height: 1.5; }
.expert-awards { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; margin-bottom: 16px; }
.expert-awards span {
  font-size: 0.72rem; padding: 3px 9px; border-radius: 50px;
  background: var(--primary-light); color: var(--primary);
}
.expert-actions { display: flex; gap: 8px; justify-content: center; }
.expert-social { display: flex; gap: 8px; justify-content: center; margin-top: 10px; }
.expert-social a {
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--bg-soft); display: flex; align-items: center; justify-content: center;
  font-size: 0.8rem; transition: all var(--transition);
}
.expert-social a:hover { background: var(--primary); color: #fff; }

/* ---------- 评价卡片 ---------- */
.review-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 24px; }
.review-card {
  background: var(--bg-card); border-radius: var(--radius);
  padding: 24px; box-shadow: var(--shadow);
  border-left: 4px solid var(--primary);
  transition: all var(--transition);
}
.review-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.review-header { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.review-avatar {
  width: 44px; height: 44px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 1rem; flex-shrink: 0;
}
.review-name { font-weight: 600; font-size: 0.92rem; }
.review-date { font-size: 0.75rem; color: var(--text-muted); }
.review-stars { color: #f59e0b; font-size: 0.85rem; margin-bottom: 10px; }
.review-text { font-size: 0.88rem; color: var(--text-light); line-height: 1.6; }
.review-platform { font-size: 0.75rem; color: var(--text-muted); margin-top: 10px; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  border: 1.5px solid var(--border); border-radius: var(--radius);
  margin-bottom: 12px; overflow: hidden; transition: border-color var(--transition);
}
.faq-item.active { border-color: var(--primary); }
.faq-q {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 22px; cursor: pointer; font-weight: 600; font-size: 0.95rem;
  background: var(--bg-card); transition: background var(--transition);
  gap: 12px;
}
.faq-q:hover { background: var(--bg-soft); }
.faq-item.active .faq-q { background: var(--primary-light); color: var(--primary); }
.faq-icon {
  width: 24px; height: 24px; border-radius: 50%; flex-shrink: 0;
  background: var(--primary-light); color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem; font-weight: 700; transition: transform var(--transition);
}
.faq-item.active .faq-icon { transform: rotate(45deg); background: var(--primary); color: #fff; }
.faq-a {
  padding: 0 22px; max-height: 0; overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  font-size: 0.9rem; color: var(--text-light); line-height: 1.7;
}
.faq-item.active .faq-a { max-height: 300px; padding: 0 22px 18px; }

/* ---------- 合作品牌 ---------- */
.partner-logos { display: flex; flex-wrap: wrap; gap: 20px; justify-content: center; align-items: center; }
.partner-logo {
  background: var(--bg-card); border: 1.5px solid var(--border);
  border-radius: var(--radius-sm); padding: 14px 28px;
  font-weight: 700; font-size: 0.92rem; color: var(--text-light);
  transition: all var(--transition);
}
.partner-logo:hover { border-color: var(--primary); color: var(--primary); box-shadow: var(--shadow); }

/* ---------- 统计数字 ---------- */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 24px; }
.stat-item { text-align: center; padding: 28px 16px; }
.stat-num { font-size: 2.4rem; font-weight: 800; background: linear-gradient(135deg,var(--primary),var(--secondary)); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; display: block; }
.stat-label { font-size: 0.88rem; color: var(--text-light); margin-top: 6px; }

/* ---------- 联系区 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.contact-info h3 { margin-bottom: 20px; }
.contact-item { display: flex; gap: 14px; margin-bottom: 20px; align-items: flex-start; }
.contact-icon { width: 44px; height: 44px; border-radius: var(--radius-sm); background: var(--primary-light); color: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 1.1rem; flex-shrink: 0; }
.contact-text strong { display: block; font-size: 0.88rem; color: var(--text-muted); margin-bottom: 2px; }
.qr-row { display: flex; gap: 20px; flex-wrap: wrap; }
.qr-item { text-align: center; }
.qr-img {
  width: 100px; height: 100px; border-radius: var(--radius-sm);
  background: var(--bg-soft); border: 1.5px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.7rem; color: var(--text-muted); overflow: hidden;
}
.qr-img img { width: 100%; height: 100%; object-fit: cover; }
.qr-item p { font-size: 0.78rem; color: var(--text-light); margin-top: 6px; }

/* ---------- 社区入口 ---------- */
.community-entry-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; }
.community-entry {
  background: var(--bg-card); border-radius: var(--radius);
  padding: 20px; text-align: center; border: 1.5px solid var(--border);
  transition: all var(--transition);
}
.community-entry:hover { border-color: var(--primary); transform: translateY(-3px); box-shadow: var(--shadow); }
.community-entry .icon { font-size: 2rem; margin-bottom: 10px; }
.community-entry h4 { font-size: 0.9rem; margin-bottom: 6px; }
.community-entry p { font-size: 0.78rem; color: var(--text-muted); }

/* ---------- 分享按钮 ---------- */
.share-bar { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.share-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px; border-radius: 50px; font-size: 0.82rem; font-weight: 600;
  transition: all var(--transition); cursor: pointer; border: none;
}
.share-wechat { background: #07c160; color: #fff; }
.share-weibo { background: #e6162d; color: #fff; }
.share-douyin { background: #000; color: #fff; }
.share-bilibili { background: #00a1d6; color: #fff; }
.share-btn:hover { opacity: 0.85; transform: translateY(-2px); }

/* ---------- 面包屑 ---------- */
.breadcrumb {
  padding: 14px 0; font-size: 0.84rem; color: var(--text-muted);
  display: flex; align-items: center; gap: 6px; flex-wrap: wrap;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: var(--border); }
.breadcrumb .current { color: var(--primary); }

/* ---------- 页脚 ---------- */
.site-footer {
  background: var(--dark); color: rgba(255,255,255,0.75);
  padding: 60px 0 0;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand .logo-text { color: #fff; -webkit-text-fill-color: #fff; background: none; font-size: 1.4rem; }
.footer-brand p { font-size: 0.85rem; margin-top: 12px; line-height: 1.7; color: rgba(255,255,255,0.6); }
.footer-col h4 { color: #fff; font-size: 0.95rem; margin-bottom: 16px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 0.85rem; color: rgba(255,255,255,0.6); transition: color var(--transition); }
.footer-col ul li a:hover { color: var(--primary); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0; display: flex; align-items: center;
  justify-content: space-between; flex-wrap: wrap; gap: 12px;
  font-size: 0.82rem; color: rgba(255,255,255,0.45);
}
.footer-bottom a { color: rgba(255,255,255,0.45); }
.footer-bottom a:hover { color: var(--primary); }
.footer-logo-img { width: 40px; height: 40px; border-radius: 50%; object-fit: cover; }
.update-time { color: rgba(255,255,255,0.4); font-size: 0.78rem; }

/* ---------- 标签 ---------- */
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  font-size: 0.78rem; padding: 4px 12px; border-radius: 50px;
  background: var(--bg-soft); color: var(--text-light);
  border: 1px solid var(--border); transition: all var(--transition);
}
.tag:hover { background: var(--primary-light); color: var(--primary); border-color: var(--primary); }
.tag.active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ---------- 分页 ---------- */
.pagination { display: flex; gap: 8px; justify-content: center; margin-top: 40px; }
.page-btn {
  width: 38px; height: 38px; border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.88rem; border: 1.5px solid var(--border);
  transition: all var(--transition); cursor: pointer; background: var(--bg-card);
}
.page-btn:hover, .page-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ---------- 加载动画 ---------- */
.skeleton {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%; animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}
@keyframes shimmer { 0%{background-position:200% 0} 100%{background-position:-200% 0} }

/* ---------- 通知条 ---------- */
.notice-bar {
  background: linear-gradient(90deg, var(--primary-light), #fff8f0);
  border-bottom: 1px solid var(--border);
  padding: 10px 0;
}
.notice-inner { display: flex; align-items: center; gap: 12px; }
.notice-label {
  background: var(--primary); color: #fff;
  font-size: 0.72rem; padding: 3px 10px; border-radius: 4px;
  font-weight: 700; white-space: nowrap;
}
.notice-text { font-size: 0.85rem; color: var(--text-light); overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .main-nav { display: none; }
  .main-nav.open { display: block; position: fixed; inset: 0; background: rgba(255,255,255,0.98); z-index: 999; padding: 80px 24px 24px; overflow-y: auto; }
  .main-nav.open ul { flex-direction: column; gap: 4px; }
  .main-nav.open a { display: block; padding: 12px 16px; font-size: 1rem; }
  .main-nav .sub-menu { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: none; background: var(--bg-soft); margin-top: 4px; }
  .hamburger { display: flex; }
  .header-search { display: none; }
  .hero { min-height: 70vh; }
  .hero-stats { gap: 20px; }
  .footer-grid { grid-template-columns: 1fr; }
  .section { padding: 48px 0; }
  .nav-search-inner { flex-direction: column; gap: 8px; }
  .nav-search-form { max-width: 100%; }
}
@media (max-width: 480px) {
  .video-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .expert-grid { grid-template-columns: 1fr 1fr; }
  .review-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .hero-stats { flex-wrap: wrap; gap: 16px; }
}

/* ---------- 懒加载 ---------- */
img[data-src] { opacity: 0; transition: opacity 0.4s; }
img.loaded { opacity: 1; }

/* ---------- 滚动条 ---------- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-soft); }
::-webkit-scrollbar-thumb { background: var(--primary-light); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

/* ---------- 选中颜色 ---------- */
::selection { background: var(--primary-light); color: var(--primary); }

/* ---------- 回到顶部 ---------- */
.back-top {
  position: fixed; bottom: 32px; right: 28px; z-index: 500;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--primary); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; box-shadow: 0 4px 16px rgba(232,67,106,0.35);
  cursor: pointer; opacity: 0; transform: translateY(20px);
  transition: all var(--transition); border: none;
}
.back-top.show { opacity: 1; transform: translateY(0); }
.back-top:hover { background: var(--primary-dark); transform: translateY(-3px); }

/* ---------- 内页 Banner ---------- */
.inner-banner {
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-3) 100%);
  padding: 60px 0; color: #fff; text-align: center; position: relative; overflow: hidden;
}
.inner-banner::before {
  content: ''; position: absolute; inset: 0;
  background: url('../images/hero-banner.jpg') center/cover no-repeat;
  opacity: 0.12;
}
.inner-banner .container { position: relative; z-index: 1; }
.inner-banner h1 { color: #fff; margin-bottom: 12px; }
.inner-banner p { color: rgba(255,255,255,0.7); max-width: 500px; margin: 0 auto; }

/* ---------- 图文列表 ---------- */
.article-list { display: flex; flex-direction: column; gap: 20px; }
.article-item {
  display: flex; gap: 20px; background: var(--bg-card);
  border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow);
  transition: all var(--transition); align-items: flex-start;
}
.article-item:hover { transform: translateX(4px); box-shadow: var(--shadow-hover); }
.article-thumb { width: 140px; flex-shrink: 0; border-radius: var(--radius-sm); overflow: hidden; aspect-ratio: 16/9; }
.article-thumb img { width: 100%; height: 100%; object-fit: cover; }
.article-body h3 { font-size: 1rem; margin-bottom: 8px; }
.article-body p { font-size: 0.85rem; color: var(--text-light); margin-bottom: 10px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.article-meta { font-size: 0.78rem; color: var(--text-muted); display: flex; gap: 12px; flex-wrap: wrap; }

/* ---------- 侧边栏 ---------- */
.sidebar-widget { background: var(--bg-card); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); margin-bottom: 24px; }
.sidebar-widget h4 { font-size: 0.95rem; margin-bottom: 16px; padding-bottom: 10px; border-bottom: 2px solid var(--primary-light); }
.hot-list li { padding: 8px 0; border-bottom: 1px solid var(--border); font-size: 0.85rem; }
.hot-list li:last-child { border-bottom: none; }
.hot-list li a { color: var(--text); display: flex; align-items: center; gap: 8px; }
.hot-list li a:hover { color: var(--primary); }
.hot-rank { width: 20px; height: 20px; border-radius: 4px; background: var(--primary-light); color: var(--primary); font-size: 0.72rem; font-weight: 700; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.hot-list li:nth-child(1) .hot-rank, .hot-list li:nth-child(2) .hot-rank, .hot-list li:nth-child(3) .hot-rank { background: var(--primary); color: #fff; }

/* ---------- 进度条 ---------- */
.progress-bar { background: var(--bg-soft); border-radius: 50px; height: 8px; overflow: hidden; margin-top: 6px; }
.progress-fill { height: 100%; border-radius: 50px; background: linear-gradient(90deg, var(--primary), var(--secondary)); transition: width 1s ease; }

/* ---------- 徽章 ---------- */
.badge { display: inline-block; padding: 2px 8px; border-radius: 4px; font-size: 0.72rem; font-weight: 700; }
.badge-new { background: #dcfce7; color: #16a34a; }
.badge-hot { background: #fee2e2; color: #dc2626; }
.badge-rec { background: #fef3c7; color: #d97706; }

/* ---------- 模态框 ---------- */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.6);
  z-index: 2000; display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden; transition: all var(--transition);
}
.modal-overlay.open { opacity: 1; visibility: visible; }
.modal-box {
  background: var(--bg-card); border-radius: var(--radius-lg);
  padding: 32px; max-width: 480px; width: 90%;
  transform: scale(0.9); transition: transform var(--transition);
}
.modal-overlay.open .modal-box { transform: scale(1); }
.modal-close { float: right; font-size: 1.4rem; cursor: pointer; color: var(--text-muted); }
.modal-close:hover { color: var(--primary); }