/* =============================================
   糖心Vlog 官网主样式 - style.css
   风格：活力·鲜艳·潮流·年轻街头时尚
   主色：电光蓝 #00CFFF | 霓虹粉 #FF2D78 | 亮橙黄 #FFB300 | 酸性绿 #39FF14 | 纯黑 #0A0A0F
   ============================================= */

/* ---- Reset & Base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'WenQuanYi Micro Hei', sans-serif;
  background: #0A0A0F;
  color: #F0F0F0;
  overflow-x: hidden;
  line-height: 1.7;
}
a { color: #00CFFF; text-decoration: none; transition: color .25s; }
a:hover { color: #FF2D78; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: #0A0A0F; }
::-webkit-scrollbar-thumb { background: #FF2D78; border-radius: 3px; }

/* ---- Neon Glow Utility ---- */
.glow-blue { text-shadow: 0 0 8px #00CFFF, 0 0 20px #00CFFF; }
.glow-pink { text-shadow: 0 0 8px #FF2D78, 0 0 20px #FF2D78; }
.glow-green { text-shadow: 0 0 8px #39FF14, 0 0 20px #39FF14; }

/* ---- Gradient Text ---- */
.grad-text {
  background: linear-gradient(90deg, #00CFFF 0%, #FF2D78 50%, #FFB300 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---- Container ---- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ---- Header / Nav ---- */
#site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10,10,15,.92);
  backdrop-filter: blur(12px);
  border-bottom: 2px solid #FF2D78;
  padding: 0 20px;
}
.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo {
  font-size: 1.6rem;
  font-weight: 900;
  letter-spacing: 2px;
  background: linear-gradient(90deg, #00CFFF, #FF2D78);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.logo span { color: #FFB300; -webkit-text-fill-color: #FFB300; }
.main-nav { display: flex; gap: 6px; align-items: center; }
.main-nav a {
  color: #F0F0F0;
  font-size: .88rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 20px;
  transition: all .25s;
  white-space: nowrap;
}
.main-nav a:hover, .main-nav a.active {
  background: linear-gradient(90deg, #FF2D78, #00CFFF);
  color: #fff;
  -webkit-text-fill-color: #fff;
}
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; }
.hamburger span { width: 24px; height: 2px; background: #FF2D78; border-radius: 2px; transition: .3s; }
.mobile-nav {
  display: none;
  flex-direction: column;
  background: rgba(10,10,15,.98);
  border-top: 1px solid #FF2D78;
  padding: 12px 0;
}
.mobile-nav a {
  padding: 12px 24px;
  color: #F0F0F0;
  font-weight: 600;
  border-bottom: 1px solid rgba(255,45,120,.15);
  transition: background .2s;
}
.mobile-nav a:hover { background: rgba(255,45,120,.15); color: #FF2D78; }

/* ---- Search Bar ---- */
.search-bar-wrap {
  background: linear-gradient(90deg, #0A0A0F 0%, #12121A 100%);
  padding: 14px 20px;
  border-bottom: 1px solid rgba(0,207,255,.2);
}
.search-bar-inner {
  max-width: 700px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  background: rgba(255,255,255,.06);
  border: 1.5px solid #00CFFF;
  border-radius: 30px;
  overflow: hidden;
  box-shadow: 0 0 12px rgba(0,207,255,.3);
}
.search-bar-inner input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: #F0F0F0;
  font-size: .95rem;
  padding: 10px 18px;
}
.search-bar-inner input::placeholder { color: rgba(240,240,240,.4); }
.search-btn {
  background: linear-gradient(90deg, #FF2D78, #00CFFF);
  border: none;
  color: #fff;
  font-size: .9rem;
  font-weight: 700;
  padding: 10px 22px;
  cursor: pointer;
  transition: opacity .2s;
}
.search-btn:hover { opacity: .85; }

/* ---- Hero Banner ---- */
.hero-section {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('/images/hero-banner.jpg');
  background-size: cover;
  background-position: center;
  filter: brightness(.55);
  z-index: 0;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,207,255,.25) 0%, rgba(255,45,120,.2) 100%);
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 20px;
}
.hero-content h1 {
  font-size: clamp(2rem, 5vw, 3.8rem);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 16px;
  background: linear-gradient(90deg, #fff 0%, #00CFFF 40%, #FF2D78 80%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-content .subtitle {
  font-size: clamp(1rem, 2.5vw, 1.4rem);
  color: rgba(240,240,240,.9);
  margin-bottom: 32px;
  max-width: 600px;
}
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }
.btn-primary {
  background: linear-gradient(90deg, #FF2D78, #FFB300);
  color: #fff;
  font-size: 1rem;
  font-weight: 800;
  padding: 14px 36px;
  border-radius: 30px;
  border: none;
  cursor: pointer;
  transition: transform .2s, box-shadow .2s;
  box-shadow: 0 4px 20px rgba(255,45,120,.5);
  text-decoration: none;
  display: inline-block;
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 8px 30px rgba(255,45,120,.7); color: #fff; -webkit-text-fill-color: #fff; }
.btn-secondary {
  background: transparent;
  color: #00CFFF;
  font-size: 1rem;
  font-weight: 700;
  padding: 13px 36px;
  border-radius: 30px;
  border: 2px solid #00CFFF;
  cursor: pointer;
  transition: all .2s;
  text-decoration: none;
  display: inline-block;
}
.btn-secondary:hover { background: #00CFFF; color: #0A0A0F; -webkit-text-fill-color: #0A0A0F; }

/* ---- Section Common ---- */
.section { padding: 70px 0; }
.section-alt { background: #0E0E18; }
.section-title {
  font-size: clamp(1.5rem, 3.5vw, 2.4rem);
  font-weight: 900;
  text-align: center;
  margin-bottom: 12px;
  background: linear-gradient(90deg, #00CFFF, #FF2D78);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-subtitle {
  text-align: center;
  color: rgba(240,240,240,.6);
  font-size: 1rem;
  margin-bottom: 48px;
}

/* ---- Video Cards Grid ---- */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.video-card {
  background: #12121A;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(0,207,255,.15);
  transition: transform .3s, box-shadow .3s, border-color .3s;
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-6px) scale(1.02);
  box-shadow: 0 0 30px rgba(255,45,120,.5), 0 0 60px rgba(0,207,255,.3);
  border-color: #FF2D78;
}
.video-thumb {
  position: relative;
  aspect-ratio: 3/4;
  overflow: hidden;
}
.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s;
}
.video-card:hover .video-thumb img { transform: scale(1.08); }
.play-btn-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,.35);
  opacity: 0;
  transition: opacity .3s;
}
.video-card:hover .play-btn-overlay { opacity: 1; }
.play-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, #FF2D78, #FFB300);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 30px rgba(255,45,120,.8);
  animation: pulse 1.5s infinite;
}
.play-icon::after {
  content: '';
  border-style: solid;
  border-width: 12px 0 12px 22px;
  border-color: transparent transparent transparent #fff;
  margin-left: 4px;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 20px rgba(255,45,120,.8); }
  50% { box-shadow: 0 0 40px rgba(255,45,120,1), 0 0 60px rgba(0,207,255,.6); }
}
.video-info { padding: 14px 16px; }
.video-title {
  font-size: .95rem;
  font-weight: 700;
  color: #F0F0F0;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-meta {
  display: flex;
  gap: 14px;
  font-size: .78rem;
  color: rgba(240,240,240,.5);
}
.video-meta span { display: flex; align-items: center; gap: 4px; }

/* ---- Community Section ---- */
.community-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.topic-card {
  background: linear-gradient(135deg, #12121A, #1A1A28);
  border-radius: 16px;
  padding: 24px;
  border: 1px solid rgba(57,255,20,.2);
  transition: border-color .3s, box-shadow .3s;
}
.topic-card:hover { border-color: #39FF14; box-shadow: 0 0 20px rgba(57,255,20,.3); }
.topic-tag {
  display: inline-block;
  background: linear-gradient(90deg, #39FF14, #00CFFF);
  color: #0A0A0F;
  font-size: .75rem;
  font-weight: 800;
  padding: 3px 12px;
  border-radius: 20px;
  margin-bottom: 10px;
}
.topic-title { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
.topic-meta { font-size: .8rem; color: rgba(240,240,240,.5); }

/* ---- AI Module ---- */
.ai-section { background: linear-gradient(135deg, #0A0A0F 0%, #0E1A2A 100%); }
.ai-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
}
.ai-image-wrap { border-radius: 20px; overflow: hidden; box-shadow: 0 0 40px rgba(0,207,255,.4); }
.ai-tools-list { display: flex; flex-direction: column; gap: 16px; }
.ai-tool-item {
  background: rgba(0,207,255,.07);
  border: 1px solid rgba(0,207,255,.25);
  border-radius: 12px;
  padding: 18px 20px;
  transition: all .3s;
}
.ai-tool-item:hover { border-color: #00CFFF; background: rgba(0,207,255,.15); transform: translateX(6px); }
.ai-tool-item h4 { color: #00CFFF; font-size: 1rem; margin-bottom: 6px; }
.ai-tool-item p { font-size: .85rem; color: rgba(240,240,240,.65); }

/* ---- KOL / Creator Cards ---- */
.creator-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}
.creator-card {
  background: #12121A;
  border-radius: 16px;
  padding: 24px 16px;
  text-align: center;
  border: 1px solid rgba(255,45,120,.15);
  transition: all .3s;
}
.creator-card:hover {
  border-color: #FF2D78;
  box-shadow: 0 0 25px rgba(255,45,120,.4);
  transform: translateY(-4px);
}
.creator-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  margin: 0 auto 12px;
  border: 3px solid #FF2D78;
  overflow: hidden;
  box-shadow: 0 0 15px rgba(255,45,120,.5);
}
.creator-avatar img { width: 100%; height: 100%; object-fit: cover; }
.creator-name { font-size: 1rem; font-weight: 700; margin-bottom: 4px; }
.creator-tag { font-size: .78rem; color: #FFB300; }
.creator-stats { display: flex; justify-content: center; gap: 16px; margin-top: 12px; font-size: .78rem; color: rgba(240,240,240,.5); }

/* ---- Reviews ---- */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}
.review-card {
  background: #12121A;
  border-radius: 16px;
  padding: 24px;
  border: 1px solid rgba(255,179,0,.15);
  transition: all .3s;
}
.review-card:hover { border-color: #FFB300; box-shadow: 0 0 20px rgba(255,179,0,.3); }
.review-header { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.review-avatar { width: 48px; height: 48px; border-radius: 50%; overflow: hidden; border: 2px solid #FFB300; }
.review-avatar img { width: 100%; height: 100%; object-fit: cover; }
.review-user { font-weight: 700; font-size: .95rem; }
.review-stars { color: #FFB300; font-size: .85rem; }
.review-text { font-size: .9rem; color: rgba(240,240,240,.8); line-height: 1.6; }

/* ---- FAQ ---- */
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: #12121A;
  border-radius: 12px;
  border: 1px solid rgba(0,207,255,.2);
  overflow: hidden;
}
.faq-question {
  padding: 18px 20px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background .2s;
}
.faq-question:hover { background: rgba(0,207,255,.08); }
.faq-question::after { content: '+'; font-size: 1.4rem; color: #00CFFF; transition: transform .3s; }
.faq-item.open .faq-question::after { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease, padding .35s ease;
  padding: 0 20px;
  font-size: .9rem;
  color: rgba(240,240,240,.7);
}
.faq-item.open .faq-answer { max-height: 200px; padding: 0 20px 18px; }

/* ---- Partners ---- */
.partners-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}
.partner-badge {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 10px;
  padding: 14px 28px;
  font-size: .9rem;
  font-weight: 700;
  color: rgba(240,240,240,.7);
  transition: all .3s;
}
.partner-badge:hover { border-color: #00CFFF; color: #00CFFF; background: rgba(0,207,255,.08); }

/* ---- Contact ---- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.contact-info h3 { font-size: 1.4rem; margin-bottom: 20px; color: #00CFFF; }
.contact-item { display: flex; gap: 12px; margin-bottom: 16px; align-items: flex-start; }
.contact-icon { font-size: 1.2rem; min-width: 28px; }
.contact-text { font-size: .9rem; color: rgba(240,240,240,.8); }
.qr-box {
  background: #12121A;
  border-radius: 16px;
  padding: 24px;
  text-align: center;
  border: 1px solid rgba(57,255,20,.2);
}
.qr-box img { width: 140px; height: 140px; object-fit: cover; border-radius: 8px; margin: 0 auto 12px; }
.qr-label { font-size: .85rem; color: rgba(240,240,240,.6); }

/* ---- Footer ---- */
#site-footer {
  background: #060609;
  border-top: 2px solid #FF2D78;
  padding: 40px 20px 20px;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 32px;
}
.footer-brand .logo { font-size: 1.4rem; margin-bottom: 12px; display: block; }
.footer-brand p { font-size: .85rem; color: rgba(240,240,240,.5); line-height: 1.7; }
.footer-col h4 { color: #FF2D78; font-size: .95rem; font-weight: 800; margin-bottom: 14px; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { font-size: .85rem; color: rgba(240,240,240,.55); transition: color .2s; }
.footer-col ul li a:hover { color: #00CFFF; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: .8rem;
  color: rgba(240,240,240,.4);
}
.footer-social { display: flex; gap: 12px; }
.social-btn {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  color: rgba(240,240,240,.6);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: .78rem;
  transition: all .2s;
  cursor: pointer;
}
.social-btn:hover { border-color: #FF2D78; color: #FF2D78; }

/* ---- Particle Canvas ---- */
#particles-canvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: .35;
}

/* ---- Page Banner (inner pages) ---- */
.page-banner {
  position: relative;
  height: 300px;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.page-banner-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: brightness(.45);
}
.page-banner-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,207,255,.2), rgba(255,45,120,.2));
}
.page-banner-content {
  position: relative;
  z-index: 2;
  padding: 0 20px;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}
.page-banner-content h1 {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 900;
  background: linear-gradient(90deg, #fff, #00CFFF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.breadcrumb { font-size: .85rem; color: rgba(240,240,240,.6); margin-top: 8px; }
.breadcrumb a { color: rgba(240,240,240,.6); }
.breadcrumb a:hover { color: #00CFFF; }

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .main-nav { display: none; }
  .hamburger { display: flex; }
  .ai-grid, .community-grid, .contact-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .hero-content h1 { font-size: 1.8rem; }
  .footer-top { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .video-grid { grid-template-columns: 1fr 1fr; }
  .reviews-grid { grid-template-columns: 1fr; }
}

/* ---- Animations ---- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-in-up { animation: fadeInUp .6s ease forwards; }

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
.animated-gradient {
  background: linear-gradient(270deg, #00CFFF, #FF2D78, #FFB300, #39FF14);
  background-size: 400% 400%;
  animation: gradientShift 6s ease infinite;
}

/* ---- Ticker / Marquee ---- */
.ticker-wrap {
  background: linear-gradient(90deg, #FF2D78, #FFB300);
  padding: 8px 0;
  overflow: hidden;
}
.ticker-inner {
  display: flex;
  white-space: nowrap;
  animation: ticker 30s linear infinite;
  font-size: .85rem;
  font-weight: 700;
  color: #0A0A0F;
}
.ticker-inner span { padding: 0 32px; }
@keyframes ticker {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---- Tag Chips ---- */
.tag-chip {
  display: inline-block;
  background: rgba(0,207,255,.12);
  border: 1px solid rgba(0,207,255,.4);
  color: #00CFFF;
  font-size: .75rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 20px;
  margin: 3px;
  transition: all .2s;
}
.tag-chip:hover { background: #00CFFF; color: #0A0A0F; }

/* ---- Stats Bar ---- */
.stats-bar {
  background: linear-gradient(90deg, #0E0E18, #12121A);
  padding: 32px 20px;
  border-top: 1px solid rgba(255,45,120,.2);
  border-bottom: 1px solid rgba(255,45,120,.2);
}
.stats-grid {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}
.stat-item h3 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 900;
  background: linear-gradient(90deg, #00CFFF, #FF2D78);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-item p { font-size: .85rem; color: rgba(240,240,240,.55); margin-top: 4px; }
@media (max-width: 600px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
}