/* =============================================
   51吃瓜 - 活力潮流年轻街头时尚风格 CSS
   ============================================= */

:root {
  --electric-blue: #00CFFF;
  --neon-pink: #FF2D78;
  --acid-green: #39FF14;
  --orange-yellow: #FFB800;
  --pure-black: #0A0A0F;
  --card-bg: rgba(255,255,255,0.04);
  --card-border: rgba(0,207,255,0.12);
  --text-main: #F0F0F8;
  --text-muted: rgba(240,240,248,0.55);
  --header-h: 68px;
  --radius: 14px;
  --glow-blue: 0 0 18px rgba(0,207,255,0.45);
  --glow-pink: 0 0 18px rgba(255,45,120,0.45);
  --glow-green: 0 0 18px rgba(57,255,20,0.45);
}

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

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

body {
  background: var(--pure-black);
  color: var(--text-main);
  font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

/* Particle Canvas */
#particles-canvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.35;
}

/* =============================================
   HEADER
   ============================================= */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: rgba(10,10,15,0.92);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(0,207,255,0.15);
  z-index: 1000;
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  height: 100%;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 32px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  flex-shrink: 0;
}

.logo-text {
  font-size: 1.5rem;
  font-weight: 900;
  background: linear-gradient(90deg, var(--electric-blue), var(--neon-pink));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.logo-badge {
  background: var(--neon-pink);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 800;
  padding: 2px 7px;
  border-radius: 8px;
  letter-spacing: 0.5px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  flex-wrap: nowrap;
  overflow: hidden;
}

.main-nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 8px;
  transition: all 0.2s;
  white-space: nowrap;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--electric-blue);
  background: rgba(0,207,255,0.08);
}

.main-nav a.nav-cta {
  background: linear-gradient(90deg, var(--neon-pink), var(--electric-blue));
  color: #fff !important;
  padding: 6px 16px;
  border-radius: 20px;
  font-weight: 800;
}

.main-nav a.nav-cta:hover {
  box-shadow: var(--glow-pink);
  transform: translateY(-1px);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  margin-left: auto;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--electric-blue);
  border-radius: 2px;
  transition: all 0.3s;
}

.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-h);
  left: 0; right: 0;
  background: rgba(10,10,15,0.97);
  border-bottom: 1px solid rgba(0,207,255,0.15);
  z-index: 999;
  flex-direction: column;
  padding: 12px 24px;
  gap: 4px;
}

.mobile-nav.open { display: flex; }

.mobile-nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 10px 12px;
  border-radius: 8px;
  transition: all 0.2s;
}

.mobile-nav a:hover { color: var(--electric-blue); background: rgba(0,207,255,0.08); }

/* =============================================
   SEARCH BAR
   ============================================= */
.search-bar-wrap {
  position: sticky;
  top: var(--header-h);
  z-index: 900;
  background: rgba(10,10,15,0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,45,120,0.1);
  padding: 10px 0;
}

.search-bar-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.search-input-row {
  display: flex;
  gap: 8px;
}

.search-input {
  flex: 1;
  background: rgba(255,255,255,0.06);
  border: 1.5px solid rgba(0,207,255,0.25);
  border-radius: 24px;
  color: var(--text-main);
  font-size: 0.9rem;
  padding: 8px 20px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  max-width: 600px;
}

.search-input:focus {
  border-color: var(--electric-blue);
  box-shadow: var(--glow-blue);
}

.search-btn {
  background: linear-gradient(90deg, var(--electric-blue), var(--neon-pink));
  border: none;
  border-radius: 20px;
  color: #fff;
  font-size: 1rem;
  padding: 8px 20px;
  cursor: pointer;
  font-weight: 700;
  transition: all 0.2s;
}

.search-btn:hover { transform: scale(1.05); box-shadow: var(--glow-pink); }

.search-tips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.search-tip {
  font-size: 0.75rem;
  color: var(--text-muted);
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 12px;
  padding: 3px 10px;
  cursor: pointer;
  transition: all 0.2s;
}

.search-tip:hover {
  color: var(--electric-blue);
  border-color: var(--electric-blue);
  background: rgba(0,207,255,0.08);
}

/* =============================================
   BREADCRUMB
   ============================================= */
.breadcrumb {
  max-width: 1280px;
  margin: 0 auto;
  padding: 12px 24px;
  font-size: 0.82rem;
  color: var(--text-muted);
  position: relative;
  z-index: 1;
}

.breadcrumb a {
  color: var(--electric-blue);
  text-decoration: none;
}

.breadcrumb a:hover { text-decoration: underline; }

/* =============================================
   PAGE HERO (inner pages)
   ============================================= */
.page-hero {
  position: relative;
  height: 280px;
  overflow: hidden;
  margin-top: 0;
}

.page-hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: brightness(0.4) saturate(1.5);
}

.page-hero-content {
  position: relative;
  z-index: 2;
  max-width: 1280px;
  margin: 0 auto;
  padding: 60px 24px 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  height: 100%;
}

.page-hero-content h1 {
  font-size: 2.2rem;
  font-weight: 900;
  background: linear-gradient(90deg, var(--electric-blue), var(--neon-pink));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 10px;
}

.page-hero-content p {
  color: rgba(240,240,248,0.75);
  font-size: 0.95rem;
  max-width: 600px;
}

/* =============================================
   HERO BANNER (homepage)
   ============================================= */
.hero-banner {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: var(--header-h);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: url('/images/banner.jpg') center/cover no-repeat;
  filter: brightness(0.35) saturate(1.8);
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,207,255,0.08) 0%, rgba(255,45,120,0.06) 50%, rgba(57,255,20,0.04) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1280px;
  margin: 0 auto;
  padding: 80px 24px 60px;
  width: 100%;
}

.hero-badge {
  display: inline-block;
  background: rgba(0,207,255,0.12);
  border: 1px solid rgba(0,207,255,0.35);
  color: var(--electric-blue);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 20px;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}

.hero-title {
  font-size: clamp(2.5rem, 7vw, 5rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #fff 0%, var(--electric-blue) 40%, var(--neon-pink) 70%, var(--acid-green) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -1px;
}

.hero-sub {
  font-size: 1.1rem;
  color: rgba(240,240,248,0.7);
  max-width: 600px;
  margin-bottom: 36px;
  line-height: 1.7;
}

.hero-btns {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 60px;
}

.btn-primary {
  display: inline-block;
  background: linear-gradient(90deg, var(--neon-pink), var(--electric-blue));
  color: #fff;
  font-size: 1rem;
  font-weight: 800;
  padding: 14px 32px;
  border-radius: 28px;
  text-decoration: none;
  transition: all 0.25s;
  border: none;
  cursor: pointer;
  letter-spacing: 0.3px;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(255,45,120,0.5);
}

.btn-secondary {
  display: inline-block;
  background: transparent;
  color: var(--acid-green);
  font-size: 1rem;
  font-weight: 800;
  padding: 13px 32px;
  border-radius: 28px;
  text-decoration: none;
  border: 2px solid var(--acid-green);
  transition: all 0.25s;
  cursor: pointer;
}

.btn-secondary:hover {
  background: rgba(57,255,20,0.1);
  box-shadow: var(--glow-green);
  transform: translateY(-3px);
}

.hero-stats {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
}

.stat-item { text-align: left; }

.stat-num {
  font-size: 1.8rem;
  font-weight: 900;
  background: linear-gradient(90deg, var(--electric-blue), var(--acid-green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 600;
}

/* =============================================
   SECTIONS
   ============================================= */
.section {
  position: relative;
  z-index: 1;
  padding: 80px 0;
}

.section-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--electric-blue);
  background: rgba(0,207,255,0.08);
  border: 1px solid rgba(0,207,255,0.2);
  padding: 4px 14px;
  border-radius: 12px;
  margin-bottom: 14px;
  text-transform: uppercase;
}

.section-title {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 900;
  color: var(--text-main);
  margin-bottom: 12px;
  line-height: 1.2;
}

.section-title span {
  background: linear-gradient(90deg, var(--neon-pink), var(--electric-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* =============================================
   FILTER BAR
   ============================================= */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
}

.filter-btn {
  font-size: 0.82rem;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 18px;
  border: 1.5px solid rgba(255,255,255,0.1);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s;
  background: transparent;
  user-select: none;
}

.filter-btn:hover,
.filter-btn.active {
  color: var(--electric-blue);
  border-color: var(--electric-blue);
  background: rgba(0,207,255,0.08);
}

/* =============================================
   VIDEO GRID & CARDS
   ============================================= */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.video-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  cursor: pointer;
  position: relative;
}

.video-card:hover {
  transform: translateY(-6px);
  border-color: var(--electric-blue);
  box-shadow: 0 12px 40px rgba(0,207,255,0.25), 0 0 0 1px rgba(0,207,255,0.3);
}

.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: rgba(255,255,255,0.03);
}

.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s, filter 0.4s;
  display: block;
}

.video-card:hover .video-thumb img {
  transform: scale(1.06);
  filter: brightness(0.75) saturate(1.4);
}

.video-play-btn {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%) scale(0);
  width: 52px; height: 52px;
  background: linear-gradient(135deg, var(--neon-pink), var(--electric-blue));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: #fff;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 0 24px rgba(255,45,120,0.6);
  z-index: 2;
}

.video-card:hover .video-play-btn {
  transform: translate(-50%, -50%) scale(1);
}

.video-tag {
  position: absolute;
  top: 10px; left: 10px;
  background: rgba(255,45,120,0.85);
  color: #fff;
  font-size: 0.68rem;
  font-weight: 800;
  padding: 3px 9px;
  border-radius: 8px;
  letter-spacing: 0.3px;
  z-index: 2;
}

.video-duration {
  position: absolute;
  bottom: 8px; right: 8px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 6px;
  z-index: 2;
}

.video-info {
  padding: 14px 16px 16px;
}

.video-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.45;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-meta {
  display: flex;
  gap: 12px;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 600;
}

/* =============================================
   COMMUNITY
   ============================================= */
.topic-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.topic-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  padding: 12px 16px;
  transition: all 0.2s;
}

.topic-item:hover {
  border-color: var(--neon-pink);
  background: rgba(255,45,120,0.05);
}

.topic-rank {
  width: 26px; height: 26px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 900;
  background: rgba(255,255,255,0.08);
  color: var(--text-muted);
  flex-shrink: 0;
}

.topic-rank.top1 { background: linear-gradient(135deg, #FFB800, #FF6B00); color: #fff; }
.topic-rank.top2 { background: linear-gradient(135deg, #C0C0C0, #888); color: #fff; }
.topic-rank.top3 { background: linear-gradient(135deg, #CD7F32, #8B4513); color: #fff; }

.topic-name {
  flex: 1;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-main);
}

.topic-heat {
  font-size: 0.78rem;
  color: var(--neon-pink);
  font-weight: 700;
  white-space: nowrap;
}

/* Danmu */
.danmu-wrap {
  margin-top: 32px;
  overflow: hidden;
  height: 44px;
  background: rgba(255,255,255,0.03);
  border-radius: 22px;
  border: 1px solid rgba(0,207,255,0.1);
  position: relative;
}

.danmu-track {
  display: flex;
  align-items: center;
  gap: 32px;
  white-space: nowrap;
  animation: danmuScroll 30s linear infinite;
  padding: 0 24px;
  height: 100%;
}

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

.danmu-item {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 600;
  padding: 4px 12px;
  background: rgba(0,207,255,0.06);
  border-radius: 12px;
  border: 1px solid rgba(0,207,255,0.1);
  flex-shrink: 0;
}

/* =============================================
   AI GRID
   ============================================= */
.ai-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}

.ai-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  transition: all 0.3s;
}

.ai-card:hover {
  border-color: var(--acid-green);
  box-shadow: 0 8px 32px rgba(57,255,20,0.15);
  transform: translateY(-4px);
}

.ai-icon { font-size: 2.2rem; margin-bottom: 12px; }

.ai-name {
  font-size: 0.92rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 8px;
}

.ai-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.ai-btn {
  display: inline-block;
  margin-top: 14px;
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--acid-green);
  text-decoration: none;
  border: 1.5px solid var(--acid-green);
  padding: 5px 14px;
  border-radius: 14px;
  transition: all 0.2s;
}

.ai-btn:hover {
  background: rgba(57,255,20,0.1);
  box-shadow: var(--glow-green);
}

/* =============================================
   KOL GRID
   ============================================= */
.kol-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 16px;
}

.kol-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 20px 16px;
  text-align: center;
  transition: all 0.3s;
}

.kol-card:hover {
  border-color: var(--orange-yellow);
  box-shadow: 0 8px 28px rgba(255,184,0,0.2);
  transform: translateY(-4px);
}

.kol-avatar {
  width: 64px; height: 64px;
  border-radius: 50%;
  margin: 0 auto 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  font-weight: 900;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.15);
}

.kol-avatar.av1 { background: linear-gradient(135deg, #00CFFF, #FF2D78); }
.kol-avatar.av2 { background: linear-gradient(135deg, #39FF14, #00CFFF); }
.kol-avatar.av3 { background: linear-gradient(135deg, #FFB800, #FF2D78); }
.kol-avatar.av4 { background: linear-gradient(135deg, #FF2D78, #FFB800); }
.kol-avatar.av5 { background: linear-gradient(135deg, #00CFFF, #39FF14); }
.kol-avatar.av6 { background: linear-gradient(135deg, #FFB800, #00CFFF); }

.kol-name {
  font-size: 0.88rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 4px;
}

.kol-fans {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.kol-tag {
  font-size: 0.68rem;
  font-weight: 700;
  background: rgba(255,184,0,0.1);
  color: var(--orange-yellow);
  padding: 2px 8px;
  border-radius: 8px;
  border: 1px solid rgba(255,184,0,0.2);
}

/* =============================================
   REVIEWS
   ============================================= */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.review-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 20px;
  transition: all 0.3s;
}

.review-card:hover {
  border-color: var(--neon-pink);
  box-shadow: 0 6px 24px rgba(255,45,120,0.12);
}

.review-stars {
  color: var(--orange-yellow);
  font-size: 0.9rem;
  margin-bottom: 10px;
  letter-spacing: 2px;
}

.review-text {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 14px;
}

.review-user {
  display: flex;
  align-items: center;
  gap: 10px;
}

.review-avatar {
  width: 36px; height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  font-weight: 900;
  color: #fff;
  flex-shrink: 0;
}

.review-avatar.ra1 { background: linear-gradient(135deg, #00CFFF, #FF2D78); }
.review-avatar.ra2 { background: linear-gradient(135deg, #39FF14, #FFB800); }
.review-avatar.ra3 { background: linear-gradient(135deg, #FF2D78, #00CFFF); }
.review-avatar.ra4 { background: linear-gradient(135deg, #FFB800, #39FF14); }
.review-avatar.ra5 { background: linear-gradient(135deg, #00CFFF, #39FF14); }
.review-avatar.ra6 { background: linear-gradient(135deg, #FF2D78, #FFB800); }
.review-avatar.ra7 { background: linear-gradient(135deg, #FFB800, #00CFFF); }
.review-avatar.ra8 { background: linear-gradient(135deg, #39FF14, #FF2D78); }

.review-name {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-main);
}

/* =============================================
   PARTNERS
   ============================================= */
.partners-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 48px;
  justify-content: center;
}

.partner-item {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  padding: 12px 24px;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-muted);
  transition: all 0.2s;
}

.partner-item:hover {
  color: var(--electric-blue);
  border-color: var(--electric-blue);
  background: rgba(0,207,255,0.06);
}

/* =============================================
   FAQ
   ============================================= */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  overflow: hidden;
  transition: border-color 0.2s;
}

.faq-item.open { border-color: var(--electric-blue); }

.faq-q {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 18px;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-main);
  cursor: pointer;
  transition: color 0.2s;
  gap: 12px;
}

.faq-q:hover { color: var(--electric-blue); }

.faq-icon {
  font-size: 1.2rem;
  font-weight: 300;
  color: var(--electric-blue);
  flex-shrink: 0;
  transition: transform 0.3s;
}

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

.faq-a {
  display: none;
  padding: 0 18px 14px;
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.7;
  border-top: 1px solid rgba(0,207,255,0.08);
  padding-top: 12px;
}

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

/* =============================================
   CONTACT
   ============================================= */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 48px;
}

.contact-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  transition: all 0.3s;
}

.contact-card:hover {
  border-color: var(--electric-blue);
  box-shadow: var(--glow-blue);
  transform: translateY(-3px);
}

.contact-icon { font-size: 1.8rem; margin-bottom: 8px; }

.contact-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.contact-value {
  font-size: 0.88rem;
  font-weight: 800;
  color: var(--text-main);
  word-break: break-all;
}

/* =============================================
   FOOTER
   ============================================= */
.site-footer {
  background: rgba(5,5,10,0.97);
  border-top: 1px solid rgba(0,207,255,0.1);
  position: relative;
  z-index: 1;
  padding: 60px 0 0;
}

.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.footer-brand .logo { margin-bottom: 16px; display: inline-flex; }

.footer-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 20px;
}

.footer-social {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.social-btn {
  width: 36px; height: 36px;
  border-radius: 10px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  text-decoration: none;
  transition: all 0.2s;
}

.social-btn:hover {
  background: rgba(0,207,255,0.1);
  border-color: var(--electric-blue);
  transform: translateY(-2px);
}

.footer-col h4 {
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-col ul li a {
  font-size: 0.82rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-col ul li a:hover { color: var(--electric-blue); }

.footer-bottom {
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.footer-icp a {
  color: var(--text-muted);
  text-decoration: none;
}

.footer-icp a:hover { color: var(--electric-blue); }

/* =============================================
   COMMUNITY SECTION
   ============================================= */
.community-section { background: rgba(0,0,0,0.15); }

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 1024px) {
  .footer-top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root { --header-h: 60px; }

  .main-nav { display: none; }
  .hamburger { display: flex; }

  .hero-title { font-size: 2.2rem; }
  .hero-stats { gap: 20px; }
  .stat-num { font-size: 1.4rem; }

  .section { padding: 48px 0; }

  .video-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }

  .footer-top { grid-template-columns: 1fr 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }

  .page-hero { height: 220px; }
  .page-hero-content h1 { font-size: 1.6rem; }

  .community-section > .section-inner > div:first-of-type + div {
    grid-template-columns: 1fr !important;
  }
}

@media (max-width: 480px) {
  .video-grid { grid-template-columns: 1fr; }
  .ai-grid { grid-template-columns: 1fr 1fr; }
  .kol-grid { grid-template-columns: repeat(3, 1fr); }
  .reviews-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .hero-btns { flex-direction: column; }
  .btn-primary, .btn-secondary { text-align: center; }
}

/* =============================================
   UTILITY
   ============================================= */
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* Gradient border animation */
@keyframes gradientBorder {
  0% { border-color: var(--electric-blue); }
  33% { border-color: var(--neon-pink); }
  66% { border-color: var(--acid-green); }
  100% { border-color: var(--electric-blue); }
}

/* Glow pulse */
@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 10px rgba(0,207,255,0.3); }
  50% { box-shadow: 0 0 30px rgba(0,207,255,0.6); }
}

/* Scroll to top button */
.scroll-top {
  position: fixed;
  bottom: 32px; right: 32px;
  width: 44px; height: 44px;
  background: linear-gradient(135deg, var(--neon-pink), var(--electric-blue));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.1rem;
  cursor: pointer;
  z-index: 999;
  box-shadow: 0 4px 16px rgba(255,45,120,0.4);
  text-decoration: none;
  transition: all 0.25s;
}

.scroll-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(255,45,120,0.6);
}