/* =============================================
   糖心vlog - 主样式表
   Brand: 糖心vlog | Domain: i7cunuL.cn
   ============================================= */

/* ---- CSS Variables ---- */
:root {
  --primary: #e8336d;
  --primary-dark: #c0255a;
  --primary-light: #ff6b9d;
  --secondary: #ff9a3c;
  --accent: #7c4dff;
  --dark: #1a1a2e;
  --dark-2: #16213e;
  --dark-3: #0f3460;
  --text: #2d2d2d;
  --text-light: #666;
  --text-muted: #999;
  --bg: #fafafa;
  --bg-card: #ffffff;
  --border: #eee;
  --border-2: #e0e0e0;
  --shadow: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-hover: 0 8px 40px rgba(232,51,109,0.2);
  --radius: 12px;
  --radius-lg: 20px;
  --radius-xl: 30px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
}

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

/* ---- Typography ---- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--dark);
}
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); }
h4 { font-size: 1.1rem; }
p { margin-bottom: 1rem; }

/* ---- Layout ---- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
.container-wide {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px;
}
.section {
  padding: 70px 0;
}
.section-sm {
  padding: 40px 0;
}
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.grid-5 { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.gap-24 { gap: 24px; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-40 { margin-top: 40px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-40 { margin-bottom: 40px; }

/* ---- Section Header ---- */
.section-header {
  text-align: center;
  margin-bottom: 48px;
}
.section-header .label {
  display: inline-block;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 4px 16px;
  border-radius: 20px;
  margin-bottom: 12px;
}
.section-header h2 {
  margin-bottom: 12px;
}
.section-header p {
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
  font-size: 1rem;
}
.section-header .divider {
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 2px;
  margin: 16px auto 0;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 600;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  box-shadow: 0 4px 15px rgba(232,51,109,0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(232,51,109,0.5);
  color: #fff;
}
.btn-secondary {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-secondary:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}
.btn-dark {
  background: var(--dark);
  color: #fff;
}
.btn-dark:hover {
  background: var(--dark-3);
  transform: translateY(-2px);
  color: #fff;
}
.btn-sm { padding: 8px 18px; font-size: 0.85rem; }
.btn-lg { padding: 16px 40px; font-size: 1.05rem; }

/* ---- Header / Navbar ---- */
#site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(232,51,109,0.1);
  transition: var(--transition);
}
#site-header.scrolled {
  box-shadow: 0 4px 30px rgba(0,0,0,0.1);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 20px;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.site-logo img.logo-icon {
  width: 40px;
  height: 40px;
  object-fit: contain;
}
.site-logo .logo-text {
  font-size: 1.3rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.site-logo .logo-sub {
  font-size: 0.65rem;
  color: var(--text-muted);
  display: block;
  margin-top: -4px;
  font-weight: 400;
  -webkit-text-fill-color: var(--text-muted);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.main-nav a {
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
  transition: var(--transition);
  white-space: nowrap;
}
.main-nav a:hover,
.main-nav a.active {
  color: var(--primary);
  background: rgba(232,51,109,0.08);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.header-actions .btn-join {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.88rem;
  font-weight: 600;
}
.header-actions .btn-join:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(232,51,109,0.4);
  color: #fff;
}
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}
.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: var(--transition);
}

/* ---- Search Bar ---- */
.search-bar-wrap {
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-3) 100%);
  padding: 12px 0;
}
.search-bar-inner {
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 700px;
  margin: 0 auto;
  padding: 0 20px;
}
.search-bar-inner .search-label {
  color: rgba(255,255,255,0.7);
  font-size: 0.85rem;
  white-space: nowrap;
}
.search-form {
  flex: 1;
  display: flex;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 50px;
  overflow: hidden;
  transition: var(--transition);
}
.search-form:focus-within {
  border-color: var(--primary-light);
  background: rgba(255,255,255,0.15);
}
.search-form input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  padding: 10px 20px;
  color: #fff;
  font-size: 0.9rem;
}
.search-form input::placeholder { color: rgba(255,255,255,0.5); }
.search-form button {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  border: none;
  padding: 10px 24px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}
.search-form button:hover {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
}
.search-hot-tags {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.search-hot-tags span {
  color: rgba(255,255,255,0.5);
  font-size: 0.78rem;
}
.search-hot-tags a {
  color: rgba(255,255,255,0.75);
  font-size: 0.78rem;
  padding: 2px 10px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 20px;
  transition: var(--transition);
}
.search-hot-tags a:hover {
  color: #fff;
  border-color: var(--primary-light);
  background: rgba(232,51,109,0.2);
}

/* ---- Hero Banner ---- */
.hero {
  margin-top: 68px;
  position: relative;
  min-height: 580px;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26,26,46,0.75) 0%, rgba(15,52,96,0.5) 60%, rgba(0,0,0,0.2) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  color: #fff;
  max-width: 650px;
  padding: 60px 0;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(232,51,109,0.85);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 20px;
  margin-bottom: 20px;
  letter-spacing: 1px;
}
.hero h1 {
  color: #fff;
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 20px;
  text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}
.hero h1 .highlight {
  background: linear-gradient(135deg, var(--primary-light), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.85);
  margin-bottom: 32px;
  line-height: 1.8;
}
.hero-btns {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 40px;
  flex-wrap: wrap;
}
.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(--primary-light);
}
.hero-stat .label {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.7);
}

/* ---- Video Cards ---- */
.video-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.video-thumb {
  position: relative;
  padding-top: 56.25%;
  overflow: hidden;
  background: #111;
}
.video-thumb img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.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);
  transition: var(--transition);
  z-index: 2;
}
.video-card:hover .video-play-btn {
  background: rgba(0,0,0,0.35);
}
.play-icon {
  width: 56px;
  height: 56px;
  background: rgba(255,255,255,0.95);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: scale(0.7);
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}
.video-card:hover .play-icon {
  opacity: 1;
  transform: scale(1);
}
.play-icon svg {
  width: 22px;
  height: 22px;
  fill: var(--primary);
  margin-left: 3px;
}
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 500;
}
.video-tag {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--primary);
  color: #fff;
  font-size: 0.7rem;
  padding: 3px 10px;
  border-radius: 4px;
  font-weight: 600;
}
.video-info {
  padding: 14px 16px;
}
.video-info h4 {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.4;
}
.video-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--text-muted);
}
.video-meta .author {
  display: flex;
  align-items: center;
  gap: 5px;
}
.video-meta .author img {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  object-fit: cover;
}
.video-stats {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 6px;
}
.video-stats span {
  display: flex;
  align-items: center;
  gap: 3px;
}

/* ---- Category Tabs ---- */
.cat-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}
.cat-tab {
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-light);
  background: var(--bg-card);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: var(--transition);
}
.cat-tab:hover,
.cat-tab.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(232,51,109,0.3);
}

/* ---- Expert Cards ---- */
.expert-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--border);
}
.expert-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(232,51,109,0.2);
}
.expert-avatar {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 16px;
  border: 3px solid var(--primary-light);
}
.expert-name {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 4px;
}
.expert-title {
  font-size: 0.82rem;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 8px;
}
.expert-desc {
  font-size: 0.83rem;
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: 12px;
}
.expert-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
  margin-bottom: 16px;
}
.expert-tag {
  font-size: 0.72rem;
  padding: 3px 10px;
  background: rgba(232,51,109,0.08);
  color: var(--primary);
  border-radius: 20px;
  font-weight: 500;
}
.expert-btns {
  display: flex;
  gap: 8px;
  justify-content: center;
}

/* ---- Feature Cards ---- */
.feature-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  opacity: 0;
  transition: var(--transition);
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 16px;
}
.feature-icon.pink { background: rgba(232,51,109,0.1); }
.feature-icon.orange { background: rgba(255,154,60,0.1); }
.feature-icon.purple { background: rgba(124,77,255,0.1); }
.feature-icon.blue { background: rgba(33,150,243,0.1); }
.feature-icon.green { background: rgba(76,175,80,0.1); }
.feature-icon.teal { background: rgba(0,188,212,0.1); }
.feature-card h3 {
  font-size: 1rem;
  margin-bottom: 8px;
}
.feature-card p {
  font-size: 0.85rem;
  color: var(--text-light);
  line-height: 1.6;
  margin: 0;
}

/* ---- Partner Logos ---- */
.partner-logos {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  align-items: center;
  justify-content: center;
}
.partner-logo {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 28px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-light);
  transition: var(--transition);
  min-width: 120px;
  text-align: center;
}
.partner-logo:hover {
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: 0 4px 12px rgba(232,51,109,0.15);
  transform: translateY(-2px);
}

/* ---- FAQ ---- */
.faq-item {
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover {
  border-color: rgba(232,51,109,0.3);
}
.faq-question {
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--dark);
  gap: 12px;
}
.faq-question .icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(232,51,109,0.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
  transition: var(--transition);
  font-weight: 400;
}
.faq-item.open .faq-question .icon {
  background: var(--primary);
  color: #fff;
  transform: rotate(45deg);
}
.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.7;
}
.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 24px 18px;
}

/* ---- Reviews ---- */
.review-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.review-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.review-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}
.review-avatar {
  width: 46px;
  height: 46px;
  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: 0.95rem;
}
.review-date {
  font-size: 0.78rem;
  color: var(--text-muted);
}
.review-stars {
  color: #ffc107;
  font-size: 0.9rem;
  margin-bottom: 10px;
}
.review-text {
  font-size: 0.88rem;
  color: var(--text-light);
  line-height: 1.7;
  margin: 0;
}
.review-tag {
  display: inline-block;
  font-size: 0.72rem;
  padding: 2px 10px;
  background: rgba(232,51,109,0.08);
  color: var(--primary);
  border-radius: 20px;
  margin-top: 10px;
}

/* ---- Contact Section ---- */
.contact-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}
.contact-item:last-child { border-bottom: none; }
.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
  color: #fff;
}
.contact-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 2px;
}
.contact-value {
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--dark);
}

/* ---- QR Codes ---- */
.qr-wrap {
  text-align: center;
}
.qr-wrap img {
  width: 120px;
  height: 120px;
  border-radius: var(--radius);
  margin: 0 auto 8px;
  border: 2px solid var(--border);
}
.qr-wrap p {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin: 0;
}

/* ---- Share Buttons ---- */
.share-btns {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 50px;
  font-size: 0.82rem;
  font-weight: 600;
  transition: var(--transition);
  color: #fff;
}
.share-btn:hover { transform: translateY(-2px); opacity: 0.9; color: #fff; }
.share-wechat { background: #07c160; }
.share-weibo { background: #e6162d; }
.share-douyin { background: #010101; }
.share-bilibili { background: #00a1d6; }

/* ---- How To Join ---- */
.join-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
}
.join-steps::before {
  content: '';
  position: absolute;
  top: 36px;
  left: 12.5%;
  right: 12.5%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  z-index: 0;
}
.join-step {
  text-align: center;
  position: relative;
  z-index: 1;
}
.step-num {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  font-size: 1.5rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  box-shadow: 0 4px 15px rgba(232,51,109,0.35);
}
.join-step h4 {
  font-size: 0.95rem;
  margin-bottom: 6px;
}
.join-step p {
  font-size: 0.82rem;
  color: var(--text-light);
  margin: 0;
}

/* ---- Footer ---- */
#site-footer {
  background: var(--dark);
  color: rgba(255,255,255,0.8);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-brand .logo-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.footer-brand .logo-wrap img {
  width: 36px;
  height: 36px;
  object-fit: contain;
}
.footer-brand .logo-wrap span {
  font-size: 1.2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary-light), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.footer-brand p {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.55);
  line-height: 1.7;
  margin-bottom: 20px;
}
.footer-social {
  display: flex;
  gap: 10px;
}
.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.7);
  transition: var(--transition);
}
.footer-social a:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}
.footer-col h4 {
  color: #fff;
  font-size: 0.95rem;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--primary);
  display: inline-block;
}
.footer-col ul li {
  margin-bottom: 8px;
}
.footer-col ul li a {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.55);
  transition: var(--transition);
}
.footer-col ul li a:hover {
  color: var(--primary-light);
  padding-left: 4px;
}
.footer-bottom {
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.4);
  margin: 0;
}
.footer-bottom .update-time {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.35);
}
.footer-links {
  display: flex;
  gap: 16px;
}
.footer-links a {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.4);
  transition: var(--transition);
}
.footer-links a:hover { color: var(--primary-light); }

/* ---- Breadcrumb ---- */
.breadcrumb {
  padding: 12px 0;
  font-size: 0.83rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.breadcrumb a {
  color: var(--text-muted);
  transition: var(--transition);
}
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: var(--border-2); }
.breadcrumb .current { color: var(--text); }

/* ---- Page Hero ---- */
.page-hero {
  margin-top: 68px;
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-3) 100%);
  padding: 50px 0;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232,51,109,0.15) 0%, transparent 70%);
}
.page-hero h1 {
  color: #fff;
  margin-bottom: 8px;
}
.page-hero p {
  color: rgba(255,255,255,0.7);
  font-size: 0.95rem;
  margin: 0;
}

/* ---- Tag Chips ---- */
.tag-chip {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 500;
  background: rgba(232,51,109,0.08);
  color: var(--primary);
  border: 1px solid rgba(232,51,109,0.2);
}

/* ---- Stats Bar ---- */
.stats-bar {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  padding: 30px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}
.stat-item .num {
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  display: block;
  line-height: 1;
  margin-bottom: 4px;
}
.stat-item .label {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.8);
}

/* ---- Pagination ---- */
.pagination {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-top: 40px;
  flex-wrap: wrap;
}
.page-btn {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  font-weight: 500;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  cursor: pointer;
  transition: var(--transition);
}
.page-btn:hover,
.page-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: #f1f1f1; }
::-webkit-scrollbar-thumb { background: var(--primary-light); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

/* ---- Animations ---- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}
.animate-fadeup {
  animation: fadeInUp 0.6s ease forwards;
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-5 { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .join-steps { grid-template-columns: repeat(2, 1fr); }
  .join-steps::before { display: none; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .section { padding: 50px 0; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .main-nav { display: none; }
  .mobile-menu-btn { display: flex; }
  .hero { min-height: 480px; }
  .hero h1 { font-size: 1.8rem; }
  .hero-stats { gap: 20px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .search-hot-tags { display: none; }
  .header-actions .btn-join { display: none; }
}
@media (max-width: 480px) {
  .grid-4 { grid-template-columns: 1fr; }
  .grid-5 { grid-template-columns: repeat(2, 1fr); }
  .hero-btns { flex-direction: column; }
  .join-steps { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .share-btns { gap: 6px; }
}

/* ---- Mobile Nav ---- */
.mobile-nav {
  display: none;
  position: fixed;
  top: 68px;
  left: 0;
  right: 0;
  background: #fff;
  z-index: 999;
  padding: 16px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.1);
  border-top: 1px solid var(--border);
}
.mobile-nav.open { display: block; }
.mobile-nav a {
  display: block;
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text);
  border-bottom: 1px solid var(--border);
}
.mobile-nav a:last-child { border-bottom: none; }
.mobile-nav a:hover { color: var(--primary); background: rgba(232,51,109,0.05); }

/* ---- Live Badge ---- */
.live-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: #e53935;
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  letter-spacing: 1px;
}
.live-dot {
  width: 6px;
  height: 6px;
  background: #fff;
  border-radius: 50%;
  animation: pulse 1.2s infinite;
}

/* ---- Notice Bar ---- */
.notice-bar {
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  color: #fff;
  padding: 8px 0;
  font-size: 0.82rem;
  text-align: center;
  overflow: hidden;
}
.notice-bar marquee { display: inline-block; }

/* ---- Image Section ---- */
.img-section {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.img-section img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ---- Notice Bar + Header offset fix ---- */
.notice-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1001;
}
#site-header {
  top: 36px !important;
}
.search-bar-wrap {
  margin-top: 104px;
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-3) 100%);
}
.hero {
  margin-top: 0 !important;
}
.page-hero {
  margin-top: 0 !important;
}
.breadcrumb-wrap {
  margin-top: 0 !important;
}
body > div[style*="margin-top:68px"],
body > div[style*="margin-top: 68px"] {
  margin-top: 0 !important;
}

/* ---- Scroll top btn ---- */
#scroll-top {
  display: none;
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  border: none;
  cursor: pointer;
  z-index: 999;
  box-shadow: 0 4px 15px rgba(232,51,109,0.4);
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: var(--transition);
}
#scroll-top.visible {
  display: flex;
}
#scroll-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(232,51,109,0.5);
}