/* ============================================
   51吃瓜 - 暗黑潮流赛博风格主样式
   ============================================ */

:root {
  --neon-gold: #f0c040;
  --neon-purple: #a855f7;
  --neon-cyan: #22d3ee;
  --dark-bg: #06060e;
  --dark-card: #0d0d1a;
  --dark-border: #1e1e3a;
  --text-primary: #f0f0ff;
  --text-secondary: #a0a0c0;
  --gradient-gp: linear-gradient(135deg, #f0c040 0%, #a855f7 100%);
  --gradient-dark: linear-gradient(180deg, #06060e 0%, #0d0d1a 100%);
  --shadow-neon: 0 0 20px rgba(168,85,247,0.4), 0 0 40px rgba(240,192,64,0.2);
  --shadow-card: 0 4px 24px rgba(0,0,0,0.6);
  --border-radius: 12px;
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
}

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

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

body {
  background-color: var(--dark-bg);
  color: var(--text-primary);
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  line-height: 1.7;
  overflow-x: hidden;
}

a { color: var(--neon-gold); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--neon-purple); text-shadow: 0 0 8px var(--neon-purple); }

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

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--dark-bg); }
::-webkit-scrollbar-thumb { background: var(--neon-purple); border-radius: 3px; }

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

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
.site-header {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(6,6,14,0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--dark-border);
  box-shadow: 0 2px 20px rgba(168,85,247,0.15);
}

.header-inner {
  max-width: 1400px; margin: 0 auto;
  padding: 0 24px;
  display: flex; align-items: center;
  height: 68px; gap: 32px;
}

.logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 1.5rem; font-weight: 900;
  background: var(--gradient-gp);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
  text-shadow: none;
  letter-spacing: 1px;
}

.logo-icon {
  width: 40px; height: 40px;
  background: var(--gradient-gp);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; color: #000; font-weight: 900;
  flex-shrink: 0;
}

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

.main-nav a {
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 0.9rem; font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
  white-space: nowrap;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--neon-gold);
  background: rgba(240,192,64,0.08);
  text-shadow: 0 0 12px rgba(240,192,64,0.5);
}

.header-actions { display: flex; align-items: center; gap: 12px; margin-left: auto; }

.btn-join {
  padding: 8px 20px;
  background: var(--gradient-gp);
  border-radius: 20px;
  color: #000 !important;
  font-weight: 700; font-size: 0.85rem;
  white-space: nowrap;
  transition: var(--transition);
  box-shadow: 0 0 16px rgba(240,192,64,0.3);
}
.btn-join:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 24px rgba(240,192,64,0.5);
  -webkit-text-fill-color: #000;
}

/* ---- Search Bar ---- */
.search-bar-wrap {
  background: rgba(13,13,26,0.95);
  border-bottom: 1px solid var(--dark-border);
  padding: 12px 24px;
}

.search-bar-inner {
  max-width: 1400px; margin: 0 auto;
  display: flex; align-items: center; gap: 12px;
}

.search-input-wrap {
  flex: 1; max-width: 640px;
  display: flex; align-items: center;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--dark-border);
  border-radius: 24px;
  padding: 0 16px;
  transition: var(--transition);
}

.search-input-wrap:focus-within {
  border-color: var(--neon-purple);
  box-shadow: 0 0 0 3px rgba(168,85,247,0.15);
}

.search-input-wrap input {
  flex: 1; background: none; border: none; outline: none;
  color: var(--text-primary); font-size: 0.9rem;
  padding: 10px 0;
}

.search-input-wrap input::placeholder { color: var(--text-secondary); }

.search-btn {
  background: none; border: none; cursor: pointer;
  color: var(--neon-gold); font-size: 1rem;
  padding: 4px 8px;
  transition: var(--transition);
}
.search-btn:hover { color: var(--neon-purple); }

.search-tags { display: flex; gap: 8px; flex-wrap: wrap; }

.search-tag {
  padding: 4px 12px;
  background: rgba(168,85,247,0.1);
  border: 1px solid rgba(168,85,247,0.3);
  border-radius: 12px;
  font-size: 0.78rem; color: var(--neon-purple);
  cursor: pointer; transition: var(--transition);
}
.search-tag:hover {
  background: rgba(168,85,247,0.2);
  color: var(--neon-gold);
}

/* ============================================
   HERO / BANNER
   ============================================ */
.hero-section {
  position: relative; overflow: hidden;
  min-height: 600px;
  display: flex; align-items: center;
}

.hero-bg {
  position: absolute; inset: 0;
  background-image: url('../images/banner.jpg');
  background-size: cover; background-position: center;
  filter: brightness(0.45);
  z-index: 1;
}

.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(135deg,
    rgba(6,6,14,0.7) 0%,
    rgba(168,85,247,0.15) 50%,
    rgba(240,192,64,0.1) 100%);
  z-index: 2;
}

.hero-content {
  position: relative; z-index: 3;
  max-width: 1400px; margin: 0 auto;
  padding: 80px 24px;
  text-align: center;
}

.hero-badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 16px;
  background: rgba(240,192,64,0.1);
  border: 1px solid rgba(240,192,64,0.4);
  border-radius: 20px;
  font-size: 0.8rem; color: var(--neon-gold);
  margin-bottom: 24px;
  animation: pulse-border 2s infinite;
}

@keyframes pulse-border {
  0%, 100% { box-shadow: 0 0 0 0 rgba(240,192,64,0.3); }
  50% { box-shadow: 0 0 0 6px rgba(240,192,64,0); }
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 16px;
  background: var(--gradient-gp);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: none;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.3rem);
  color: var(--text-secondary);
  margin-bottom: 36px;
  max-width: 600px; margin-left: auto; margin-right: auto;
}

.hero-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.btn-primary {
  padding: 14px 32px;
  background: var(--gradient-gp);
  border-radius: 28px;
  color: #000 !important;
  font-weight: 700; font-size: 1rem;
  transition: var(--transition);
  box-shadow: var(--shadow-neon);
  -webkit-text-fill-color: #000;
}
.btn-primary:hover {
  transform: translateY(-2px) scale(1.03);
  box-shadow: 0 0 32px rgba(240,192,64,0.5);
}

.btn-secondary {
  padding: 14px 32px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(168,85,247,0.5);
  border-radius: 28px;
  color: var(--neon-purple) !important;
  font-weight: 700; font-size: 1rem;
  transition: var(--transition);
}
.btn-secondary:hover {
  background: rgba(168,85,247,0.1);
  border-color: var(--neon-purple);
  box-shadow: 0 0 20px rgba(168,85,247,0.3);
}

.hero-stats {
  display: flex; gap: 40px; justify-content: center;
  margin-top: 48px; flex-wrap: wrap;
}

.stat-item { text-align: center; }
.stat-num {
  font-size: 1.8rem; font-weight: 900;
  background: var(--gradient-gp);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label { font-size: 0.8rem; color: var(--text-secondary); }

/* ============================================
   SECTION COMMON
   ============================================ */
.section { padding: 72px 24px; position: relative; z-index: 1; }
.section-inner { max-width: 1400px; margin: 0 auto; }

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

.section-tag {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(168,85,247,0.1);
  border: 1px solid rgba(168,85,247,0.3);
  border-radius: 12px;
  font-size: 0.78rem; color: var(--neon-purple);
  margin-bottom: 12px;
  letter-spacing: 1px; text-transform: uppercase;
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 800;
  background: var(--gradient-gp);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
}

.section-desc { color: var(--text-secondary); font-size: 0.95rem; max-width: 560px; margin: 0 auto; }

/* ============================================
   VIDEO CARDS
   ============================================ */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.video-card {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: var(--border-radius);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
}

.video-card:hover {
  transform: translateY(-4px);
  border-color: rgba(168,85,247,0.5);
  box-shadow: var(--shadow-neon);
}

.video-thumb {
  position: relative;
  padding-top: 56.25%; /* 16:9 */
  overflow: hidden;
  background: #0a0a18;
}

.video-thumb img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.video-card:hover .video-thumb img { transform: scale(1.06); }

.play-overlay {
  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 .play-overlay {
  background: rgba(0,0,0,0.45);
}

.play-btn {
  width: 56px; height: 56px;
  background: rgba(240,192,64,0.9);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; transform: scale(0.7);
  transition: var(--transition);
  box-shadow: 0 0 24px rgba(240,192,64,0.6);
}

.video-card:hover .play-btn {
  opacity: 1; transform: scale(1);
}

.play-btn svg { width: 22px; height: 22px; fill: #000; margin-left: 3px; }

.video-duration {
  position: absolute; bottom: 8px; right: 8px;
  background: rgba(0,0,0,0.75);
  padding: 2px 7px; border-radius: 4px;
  font-size: 0.75rem; color: #fff;
}

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

.video-title {
  font-size: 0.9rem; font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.5;
}

.video-meta {
  display: flex; gap: 12px;
  font-size: 0.78rem; color: var(--text-secondary);
  flex-wrap: wrap;
}

.video-meta span { display: flex; align-items: center; gap: 4px; }

/* ============================================
   COMMUNITY SECTION
   ============================================ */
.community-section { background: rgba(13,13,26,0.6); }

.danmaku-bar {
  background: rgba(0,0,0,0.4);
  border: 1px solid var(--dark-border);
  border-radius: 8px;
  padding: 12px 20px;
  margin-bottom: 32px;
  overflow: hidden;
  position: relative;
  height: 44px;
}

.danmaku-track {
  display: flex; gap: 60px;
  animation: danmaku-scroll 20s linear infinite;
  white-space: nowrap;
}

@keyframes danmaku-scroll {
  from { transform: translateX(100%); }
  to { transform: translateX(-100%); }
}

.danmaku-item {
  font-size: 0.85rem;
  color: var(--neon-gold);
  text-shadow: 0 0 8px rgba(240,192,64,0.4);
}

.topic-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.topic-card {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: var(--border-radius);
  padding: 20px;
  transition: var(--transition);
  cursor: pointer;
}

.topic-card:hover {
  border-color: var(--neon-purple);
  box-shadow: 0 0 16px rgba(168,85,247,0.2);
}

.topic-tag {
  font-size: 0.85rem; font-weight: 700;
  color: var(--neon-purple);
  margin-bottom: 8px;
}

.topic-count { font-size: 0.78rem; color: var(--text-secondary); }

/* ============================================
   AI TOOLS SECTION
   ============================================ */
.ai-tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

.ai-tool-card {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: var(--border-radius);
  padding: 28px 24px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.ai-tool-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--gradient-gp);
  opacity: 0;
  transition: var(--transition);
}

.ai-tool-card:hover::before { opacity: 1; }

.ai-tool-card:hover {
  border-color: rgba(240,192,64,0.3);
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
}

.ai-tool-icon {
  width: 52px; height: 52px;
  background: rgba(168,85,247,0.15);
  border: 1px solid rgba(168,85,247,0.3);
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.ai-tool-name {
  font-size: 1rem; font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.ai-tool-desc { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.6; }

/* ============================================
   EXPERTS SECTION
   ============================================ */
.experts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 24px;
}

.expert-card {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: var(--border-radius);
  padding: 28px 20px;
  text-align: center;
  transition: var(--transition);
}

.expert-card:hover {
  border-color: var(--neon-gold);
  box-shadow: 0 0 20px rgba(240,192,64,0.15);
  transform: translateY(-3px);
}

.expert-avatar {
  width: 80px; height: 80px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 14px;
  border: 2px solid var(--neon-purple);
  box-shadow: 0 0 16px rgba(168,85,247,0.3);
}

.expert-name {
  font-size: 1rem; font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.expert-title { font-size: 0.8rem; color: var(--neon-purple); }

/* ============================================
   REVIEWS SECTION
   ============================================ */
.reviews-section { background: rgba(13,13,26,0.5); }

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

.review-card {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: var(--border-radius);
  padding: 24px;
  transition: var(--transition);
}

.review-card:hover {
  border-color: rgba(240,192,64,0.3);
  box-shadow: var(--shadow-card);
}

.review-header {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 14px;
}

.review-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--gradient-gp);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem; font-weight: 700; color: #000;
  flex-shrink: 0;
}

.review-user { font-size: 0.9rem; font-weight: 600; color: var(--text-primary); }

.review-stars { color: var(--neon-gold); font-size: 0.8rem; }

.review-content { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.7; }

/* ============================================
   FAQ SECTION
   ============================================ */
.faq-list { max-width: 800px; margin: 0 auto; }

.faq-item {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: var(--border-radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover { border-color: rgba(168,85,247,0.4); }

.faq-question {
  padding: 18px 24px;
  display: flex; align-items: center; justify-content: space-between;
  cursor: pointer;
  font-size: 0.95rem; font-weight: 600;
  color: var(--text-primary);
  user-select: none;
}

.faq-icon {
  width: 24px; height: 24px;
  border-radius: 50%;
  background: rgba(168,85,247,0.15);
  border: 1px solid rgba(168,85,247,0.3);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem; color: var(--neon-purple);
  flex-shrink: 0;
  transition: var(--transition);
}

.faq-item.open .faq-icon { transform: rotate(45deg); background: rgba(240,192,64,0.15); border-color: var(--neon-gold); color: var(--neon-gold); }

.faq-answer {
  max-height: 0; overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 24px;
  font-size: 0.88rem; color: var(--text-secondary); line-height: 1.7;
}

.faq-item.open .faq-answer {
  max-height: 200px;
  padding: 0 24px 18px;
}

/* ============================================
   PARTNERS SECTION
   ============================================ */
.partners-grid {
  display: flex; flex-wrap: wrap;
  gap: 20px; justify-content: center;
  margin-bottom: 48px;
}

.partner-logo {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: 10px;
  padding: 16px 28px;
  font-size: 0.9rem; font-weight: 700;
  color: var(--text-secondary);
  transition: var(--transition);
  min-width: 120px; text-align: center;
}

.partner-logo:hover {
  border-color: var(--neon-gold);
  color: var(--neon-gold);
  box-shadow: 0 0 12px rgba(240,192,64,0.2);
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact-section { background: rgba(13,13,26,0.7); }

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 32px;
}

.contact-card {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: var(--border-radius);
  padding: 28px;
}

.contact-card h3 {
  font-size: 1rem; font-weight: 700;
  color: var(--neon-gold);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--dark-border);
}

.contact-item {
  display: flex; align-items: flex-start; gap: 10px;
  margin-bottom: 12px;
  font-size: 0.88rem; color: var(--text-secondary);
}

.contact-icon { color: var(--neon-purple); flex-shrink: 0; font-size: 1rem; }

.qrcode-img {
  width: 120px; height: 120px;
  border-radius: 8px;
  border: 2px solid var(--neon-gold);
  margin-top: 8px;
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
  background: rgba(6,6,14,0.98);
  border-top: 1px solid var(--dark-border);
  padding: 48px 24px 24px;
  position: relative; z-index: 1;
}

.footer-inner { max-width: 1400px; margin: 0 auto; }

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .logo { margin-bottom: 12px; }
.footer-brand p { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.7; }

.footer-col h4 {
  font-size: 0.9rem; font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--dark-border);
}

.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { font-size: 0.85rem; color: var(--text-secondary); }
.footer-col ul li a:hover { color: var(--neon-gold); }

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--dark-border);
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 12px;
  font-size: 0.8rem; color: var(--text-secondary);
}

.footer-links { display: flex; gap: 16px; flex-wrap: wrap; }
.footer-links a { color: var(--text-secondary); }
.footer-links a:hover { color: var(--neon-gold); }

/* ============================================
   INNER PAGE HERO
   ============================================ */
.inner-hero {
  position: relative; overflow: hidden;
  min-height: 320px;
  display: flex; align-items: center;
}

.inner-hero-bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  filter: brightness(0.35);
  z-index: 1;
}

.inner-hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(6,6,14,0.8) 0%, rgba(168,85,247,0.1) 100%);
  z-index: 2;
}

.inner-hero-content {
  position: relative; z-index: 3;
  max-width: 1400px; margin: 0 auto;
  padding: 60px 24px;
}

.breadcrumb {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.82rem; color: var(--text-secondary);
  margin-bottom: 16px;
}

.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--neon-gold); }
.breadcrumb span { color: var(--neon-gold); }

.inner-hero-title {
  font-size: clamp(1.8rem, 3.5vw, 3rem);
  font-weight: 900;
  background: var(--gradient-gp);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
}

.inner-hero-desc { font-size: 1rem; color: var(--text-secondary); max-width: 500px; }

/* ============================================
   UTILITY
   ============================================ */
.text-center { text-align: center; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mb-24 { margin-bottom: 24px; }

.neon-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--neon-purple), var(--neon-gold), transparent);
  margin: 48px 0;
  opacity: 0.4;
}

.tag-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 10px;
  font-size: 0.72rem; font-weight: 600;
  background: rgba(240,192,64,0.1);
  border: 1px solid rgba(240,192,64,0.3);
  color: var(--neon-gold);
  margin-right: 6px; margin-bottom: 6px;
}

/* ============================================
   MOBILE MENU
   ============================================ */
.menu-toggle {
  display: none;
  background: none; border: none;
  cursor: pointer; padding: 8px;
  color: var(--text-primary); font-size: 1.4rem;
}

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

@media (max-width: 768px) {
  .main-nav { display: none; }
  .menu-toggle { display: block; }

  .header-inner { gap: 16px; }

  .hero-content { padding: 60px 16px; }
  .hero-stats { gap: 24px; }

  .section { padding: 48px 16px; }

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

  .search-bar-wrap { padding: 10px 16px; }
  .search-tags { display: none; }

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

@media (max-width: 480px) {
  .hero-buttons { flex-direction: column; align-items: center; }
  .btn-primary, .btn-secondary { width: 100%; max-width: 280px; text-align: center; }
  .video-grid { grid-template-columns: 1fr; }
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in-up { animation: fadeInUp 0.6s ease both; }
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }

/* ============================================
   MOBILE NAV OVERLAY
   ============================================ */
.mobile-nav {
  display: none;
  position: fixed; inset: 0;
  background: rgba(6,6,14,0.97);
  z-index: 2000;
  flex-direction: column;
  align-items: center; justify-content: center;
  gap: 24px;
}

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

.mobile-nav a {
  font-size: 1.4rem; font-weight: 700;
  color: var(--text-primary);
  transition: var(--transition);
}

.mobile-nav a:hover { color: var(--neon-gold); }

.mobile-nav-close {
  position: absolute; top: 24px; right: 24px;
  background: none; border: none;
  color: var(--text-secondary); font-size: 1.8rem;
  cursor: pointer;
}

/* ============================================
   LOADING ANIMATION
   ============================================ */
.lazy-img { opacity: 0; transition: opacity 0.4s ease; }
.lazy-img.loaded { opacity: 1; }