/* ================================================
   糖心Vlog 主样式文件
   暗黑潮流·霓虹金紫·赛博科技风
   ================================================ */

:root {
  --color-bg: #0a0a0f;
  --color-bg2: #0f0f1a;
  --color-bg3: #13131f;
  --color-gold: #d4a017;
  --color-gold-light: #f0c040;
  --color-purple: #8b2fc9;
  --color-purple-light: #b44fff;
  --color-neon: #c77dff;
  --color-text: #e8e8f0;
  --color-text-muted: #888899;
  --color-border: rgba(180,79,255,0.25);
  --color-card: rgba(15,15,30,0.9);
  --gradient-gold-purple: linear-gradient(135deg, #d4a017 0%, #8b2fc9 50%, #c77dff 100%);
  --gradient-dark: linear-gradient(180deg, #0a0a0f 0%, #13131f 100%);
  --shadow-neon: 0 0 20px rgba(180,79,255,0.4), 0 0 40px rgba(212,160,23,0.2);
  --shadow-card: 0 8px 32px rgba(0,0,0,0.6);
  --radius: 12px;
  --radius-lg: 20px;
  --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 {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  overflow-x: hidden;
}

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

/* ---- 通用 ---- */
a { color: var(--color-gold-light); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--color-neon); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

.container { max-width: 1280px; margin: 0 auto; padding: 0 20px; }
.section { padding: 80px 0; }
.section-title {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  background: var(--gradient-gold-purple);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
  text-align: center;
}
.section-sub {
  color: var(--color-text-muted);
  text-align: center;
  margin-bottom: 48px;
  font-size: 1rem;
}
.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}
.badge-hot { background: rgba(212,160,23,0.2); color: var(--color-gold-light); border: 1px solid var(--color-gold); }
.badge-new { background: rgba(139,47,201,0.2); color: var(--color-neon); border: 1px solid var(--color-purple); }
.badge-ai  { background: rgba(0,200,255,0.15); color: #00c8ff; border: 1px solid rgba(0,200,255,0.4); }

/* ---- 按钮 ---- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px; border-radius: 50px; font-size: 0.95rem;
  font-weight: 600; cursor: pointer; border: none; transition: var(--transition);
  letter-spacing: 0.03em;
}
.btn-primary {
  background: var(--gradient-gold-purple);
  color: #fff;
  box-shadow: 0 4px 20px rgba(139,47,201,0.5);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(139,47,201,0.7); color: #fff; }
.btn-outline {
  background: transparent;
  color: var(--color-gold-light);
  border: 1.5px solid var(--color-gold);
}
.btn-outline:hover { background: rgba(212,160,23,0.15); color: var(--color-gold-light); }
.btn-ghost {
  background: rgba(255,255,255,0.06);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn-ghost:hover { background: rgba(255,255,255,0.12); color: var(--color-text); }

/* ================================================
   顶部导航
   ================================================ */
.site-header {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(10,10,15,0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 1.35rem; font-weight: 800;
  background: var(--gradient-gold-purple);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  white-space: nowrap;
}
.logo-icon { width: 36px; height: 36px; flex-shrink: 0; }
.nav-list { display: flex; align-items: center; gap: 4px; }
.nav-list a {
  padding: 8px 14px; border-radius: 8px;
  color: var(--color-text-muted); font-size: 0.9rem; font-weight: 500;
  transition: var(--transition);
}
.nav-list a:hover, .nav-list a.active {
  color: var(--color-gold-light);
  background: rgba(212,160,23,0.1);
}
.nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--color-text); border-radius: 2px; transition: var(--transition); }

/* ---- 搜索框 ---- */
.search-bar-wrap {
  background: var(--color-bg2);
  border-bottom: 1px solid var(--color-border);
  padding: 10px 0;
}
.search-inner {
  display: flex; align-items: center; gap: 12px;
  max-width: 720px; margin: 0 auto; padding: 0 20px;
}
.search-box {
  flex: 1; display: flex; align-items: center;
  background: rgba(255,255,255,0.05);
  border: 1.5px solid var(--color-border);
  border-radius: 50px; overflow: hidden;
  transition: var(--transition);
}
.search-box:focus-within { border-color: var(--color-gold); box-shadow: 0 0 0 3px rgba(212,160,23,0.15); }
.search-box input {
  flex: 1; background: none; border: none; outline: none;
  color: var(--color-text); padding: 10px 20px; font-size: 0.9rem;
}
.search-box input::placeholder { color: var(--color-text-muted); }
.search-box button {
  background: var(--gradient-gold-purple);
  border: none; color: #fff; padding: 10px 20px;
  cursor: pointer; font-size: 0.9rem; font-weight: 600;
  transition: var(--transition);
}
.search-box button:hover { opacity: 0.85; }
.search-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.search-tag {
  padding: 4px 12px; border-radius: 20px;
  background: rgba(139,47,201,0.15); color: var(--color-neon);
  font-size: 0.78rem; cursor: pointer; border: 1px solid rgba(139,47,201,0.3);
  transition: var(--transition);
}
.search-tag:hover { background: rgba(139,47,201,0.3); }

/* ================================================
   首屏 Banner
   ================================================ */
.hero {
  position: relative; overflow: hidden;
  min-height: 580px; display: flex; align-items: center;
  background: var(--color-bg);
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background-image: url('../images/banner_hero.jpg');
  background-size: cover; background-position: center;
  filter: brightness(0.35);
}
.hero-overlay {
  position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(135deg, rgba(10,10,15,0.7) 0%, rgba(139,47,201,0.15) 50%, rgba(10,10,15,0.8) 100%);
}
#particles-canvas { position: absolute; inset: 0; z-index: 2; pointer-events: none; }
.hero-content {
  position: relative; z-index: 3;
  max-width: 680px; padding: 80px 20px;
}
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(212,160,23,0.15); border: 1px solid rgba(212,160,23,0.4);
  border-radius: 50px; padding: 6px 16px;
  color: var(--color-gold-light); font-size: 0.82rem; font-weight: 600;
  margin-bottom: 20px; letter-spacing: 0.05em;
}
.hero-eyebrow::before { content: '●'; color: var(--color-gold); font-size: 0.6rem; animation: pulse 1.5s infinite; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.3} }
.hero-title {
  font-size: clamp(2rem, 5vw, 3.6rem);
  font-weight: 900; line-height: 1.15;
  margin-bottom: 20px;
}
.hero-title .brand {
  background: var(--gradient-gold-purple);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-desc { color: var(--color-text-muted); font-size: 1.05rem; margin-bottom: 32px; max-width: 520px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats {
  display: flex; gap: 32px; margin-top: 48px; flex-wrap: wrap;
}
.stat-item { text-align: center; }
.stat-num {
  font-size: 1.8rem; font-weight: 800;
  background: var(--gradient-gold-purple);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.stat-label { color: var(--color-text-muted); font-size: 0.8rem; margin-top: 2px; }

/* ================================================
   视频卡片
   ================================================ */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.video-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-gold);
  box-shadow: var(--shadow-neon);
}
.video-thumb {
  position: relative; aspect-ratio: 16/9; overflow: hidden;
}
.video-thumb img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.4s 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(0,0,0,0.45);
  opacity: 0; transition: var(--transition);
}
.video-card:hover .video-play-btn { opacity: 1; }
.play-icon {
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--gradient-gold-purple);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 0 30px rgba(139,47,201,0.7);
  transform: scale(0.8); transition: var(--transition);
}
.video-card:hover .play-icon { transform: scale(1); }
.play-icon svg { width: 22px; height: 22px; fill: #fff; margin-left: 3px; }
.video-duration {
  position: absolute; bottom: 8px; right: 8px;
  background: rgba(0,0,0,0.75); color: #fff;
  padding: 2px 8px; border-radius: 4px; font-size: 0.75rem;
}
.video-badge { position: absolute; top: 8px; left: 8px; }
.video-info { padding: 14px 16px; }
.video-title {
  font-size: 0.95rem; font-weight: 600; color: var(--color-text);
  margin-bottom: 8px; line-height: 1.4;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.video-meta {
  display: flex; align-items: center; gap: 12px;
  color: var(--color-text-muted); font-size: 0.78rem;
}
.video-meta span { display: flex; align-items: center; gap: 4px; }
.video-author { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.author-avatar {
  width: 24px; height: 24px; border-radius: 50%;
  background: var(--gradient-gold-purple); display: flex; align-items: center;
  justify-content: center; font-size: 0.65rem; color: #fff; font-weight: 700;
  flex-shrink: 0;
}
.author-name { font-size: 0.8rem; color: var(--color-text-muted); }

/* ================================================
   社区模块
   ================================================ */
.community-section { background: var(--color-bg2); }
.danmaku-wrap {
  background: rgba(0,0,0,0.4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px; overflow: hidden; position: relative;
  height: 120px; margin-bottom: 32px;
}
.danmaku-track {
  position: absolute; white-space: nowrap;
  animation: danmaku-scroll 18s linear infinite;
  color: var(--color-text-muted); font-size: 0.88rem;
}
.danmaku-track:nth-child(1) { top: 20px; animation-duration: 16s; }
.danmaku-track:nth-child(2) { top: 52px; animation-duration: 22s; animation-delay: -5s; }
.danmaku-track:nth-child(3) { top: 84px; animation-duration: 19s; animation-delay: -10s; }
@keyframes danmaku-scroll { from { transform: translateX(100vw); } to { transform: translateX(-100%); } }
.danmaku-item { display: inline-block; margin-right: 60px; }
.danmaku-item .d-name { color: var(--color-gold-light); margin-right: 4px; }

.topic-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px;
}
.topic-card {
  background: var(--color-card); border: 1px solid var(--color-border);
  border-radius: var(--radius); padding: 16px; transition: var(--transition); cursor: pointer;
}
.topic-card:hover { border-color: var(--color-purple); background: rgba(139,47,201,0.08); }
.topic-tag { font-size: 1.2rem; margin-bottom: 8px; }
.topic-title { font-size: 0.9rem; font-weight: 600; margin-bottom: 6px; }
.topic-count { color: var(--color-text-muted); font-size: 0.78rem; }

/* ================================================
   AI 模块
   ================================================ */
.ai-section { background: var(--color-bg3); }
.ai-tools-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 24px;
}
.ai-tool-card {
  background: var(--color-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: 28px 24px; text-align: center;
  transition: var(--transition); cursor: pointer; position: relative; overflow: hidden;
}
.ai-tool-card::before {
  content: ''; position: absolute; inset: 0;
  background: var(--gradient-gold-purple); opacity: 0; transition: var(--transition);
}
.ai-tool-card:hover::before { opacity: 0.06; }
.ai-tool-card:hover { border-color: var(--color-neon); transform: translateY(-4px); box-shadow: var(--shadow-neon); }
.ai-icon {
  width: 60px; height: 60px; border-radius: 16px;
  background: var(--gradient-gold-purple); display: flex; align-items: center;
  justify-content: center; font-size: 1.6rem; margin: 0 auto 16px;
  box-shadow: 0 4px 20px rgba(139,47,201,0.4);
}
.ai-tool-name { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.ai-tool-desc { color: var(--color-text-muted); font-size: 0.85rem; line-height: 1.6; }
.ai-tool-badge {
  display: inline-block; margin-top: 12px;
  padding: 3px 10px; border-radius: 20px;
  background: rgba(0,200,255,0.1); color: #00c8ff;
  font-size: 0.72rem; border: 1px solid rgba(0,200,255,0.3);
}

/* ================================================
   专家模块
   ================================================ */
.experts-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 24px;
}
.expert-card {
  background: var(--color-card); border: 1px solid var(--color-border);
  border-radius: var(--radius); padding: 24px 16px; text-align: center;
  transition: var(--transition);
}
.expert-card:hover { border-color: var(--color-gold); transform: translateY(-4px); }
.expert-avatar {
  width: 72px; height: 72px; border-radius: 50%; margin: 0 auto 12px;
  background: var(--gradient-gold-purple);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem; color: #fff; font-weight: 700;
  border: 2px solid var(--color-gold);
}
.expert-name { font-size: 1rem; font-weight: 700; margin-bottom: 4px; }
.expert-title { color: var(--color-gold-light); font-size: 0.8rem; margin-bottom: 8px; }
.expert-desc { color: var(--color-text-muted); font-size: 0.78rem; line-height: 1.5; }

/* ================================================
   口碑评价
   ================================================ */
.reviews-section { background: var(--color-bg2); }
.reviews-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 24px;
}
.review-card {
  background: var(--color-card); border: 1px solid var(--color-border);
  border-radius: var(--radius); padding: 24px; transition: var(--transition);
}
.review-card:hover { border-color: var(--color-gold); }
.review-stars { color: var(--color-gold-light); font-size: 0.9rem; margin-bottom: 12px; }
.review-text { color: var(--color-text); font-size: 0.9rem; line-height: 1.7; margin-bottom: 16px; }
.review-author { display: flex; align-items: center; gap: 10px; }
.review-avatar {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--gradient-gold-purple);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.8rem; color: #fff; font-weight: 700; flex-shrink: 0;
}
.review-name { font-size: 0.88rem; font-weight: 600; }
.review-date { color: var(--color-text-muted); font-size: 0.75rem; }

/* ================================================
   合作伙伴
   ================================================ */
.partners-section { background: var(--color-bg3); }
.partners-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 16px;
  margin-bottom: 48px;
}
.partner-item {
  background: var(--color-card); border: 1px solid var(--color-border);
  border-radius: var(--radius); padding: 20px 16px; text-align: center;
  font-size: 0.88rem; font-weight: 600; color: var(--color-text-muted);
  transition: var(--transition); cursor: pointer;
}
.partner-item:hover { border-color: var(--color-gold); color: var(--color-gold-light); }
.partner-icon { font-size: 1.8rem; margin-bottom: 8px; }

/* ================================================
   FAQ
   ================================================ */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--color-card); border: 1px solid var(--color-border);
  border-radius: var(--radius); margin-bottom: 12px; overflow: hidden;
}
.faq-q {
  padding: 18px 20px; cursor: pointer;
  display: flex; align-items: center; justify-content: space-between;
  font-weight: 600; font-size: 0.95rem; transition: var(--transition);
}
.faq-q:hover { color: var(--color-gold-light); }
.faq-q .faq-icon { font-size: 1.2rem; transition: var(--transition); color: var(--color-gold); }
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-a {
  max-height: 0; overflow: hidden; transition: max-height 0.35s ease;
  color: var(--color-text-muted); font-size: 0.88rem; line-height: 1.7;
}
.faq-a-inner { padding: 0 20px 18px; border-top: 1px solid var(--color-border); padding-top: 14px; }
.faq-item.open .faq-a { max-height: 300px; }

/* ================================================
   联系模块
   ================================================ */
.contact-section { background: var(--color-bg); }
.contact-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start;
}
.contact-info h3 { font-size: 1.4rem; font-weight: 700; margin-bottom: 20px; }
.contact-item {
  display: flex; align-items: flex-start; gap: 12px;
  margin-bottom: 16px; color: var(--color-text-muted); font-size: 0.9rem;
}
.contact-icon { font-size: 1.2rem; flex-shrink: 0; margin-top: 2px; }
.qr-wrap {
  display: flex; gap: 24px; flex-wrap: wrap; margin-top: 24px;
}
.qr-item { text-align: center; }
.qr-box {
  width: 100px; height: 100px; background: #fff; border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.65rem; color: #333; text-align: center; padding: 8px;
  margin-bottom: 8px;
}
.qr-label { font-size: 0.78rem; color: var(--color-text-muted); }
.join-guide {
  background: var(--color-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: 28px;
}
.join-guide h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 20px; }
.join-step {
  display: flex; align-items: flex-start; gap: 14px; margin-bottom: 16px;
}
.step-num {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--gradient-gold-purple);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.78rem; font-weight: 700; color: #fff; flex-shrink: 0;
}
.step-text { font-size: 0.88rem; color: var(--color-text-muted); line-height: 1.6; }

/* ================================================
   页脚
   ================================================ */
.site-footer {
  background: #050508;
  border-top: 1px solid var(--color-border);
  padding: 48px 0 24px;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px;
}
.footer-brand .logo { font-size: 1.2rem; margin-bottom: 12px; }
.footer-brand p { color: var(--color-text-muted); font-size: 0.85rem; line-height: 1.7; max-width: 280px; }
.footer-col h4 { font-size: 0.9rem; font-weight: 700; color: var(--color-gold-light); margin-bottom: 16px; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { color: var(--color-text-muted); font-size: 0.85rem; }
.footer-col ul li a:hover { color: var(--color-gold-light); }
.footer-bottom {
  border-top: 1px solid var(--color-border); padding-top: 24px;
  display: flex; align-items: center; justify-content: space-between; flex-wrap: gap;
  gap: 12px;
}
.footer-copy { color: var(--color-text-muted); font-size: 0.82rem; }
.footer-social { display: flex; gap: 12px; }
.social-btn {
  width: 36px; height: 36px; border-radius: 50%;
  background: rgba(255,255,255,0.06); border: 1px solid var(--color-border);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-text-muted); font-size: 0.9rem; transition: var(--transition);
}
.social-btn:hover { background: rgba(212,160,23,0.2); border-color: var(--color-gold); color: var(--color-gold-light); }
.footer-icp { color: var(--color-text-muted); font-size: 0.78rem; }
.footer-update { color: var(--color-text-muted); font-size: 0.78rem; }

/* ================================================
   内页通用
   ================================================ */
.page-hero {
  background: var(--color-bg2); border-bottom: 1px solid var(--color-border);
  padding: 60px 0 40px;
}
.page-hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 800;
  background: var(--gradient-gold-purple);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  margin-bottom: 12px;
}
.page-hero p { color: var(--color-text-muted); font-size: 1rem; max-width: 600px; }
.breadcrumb {
  display: flex; align-items: center; gap: 8px;
  color: var(--color-text-muted); font-size: 0.82rem; margin-bottom: 16px;
}
.breadcrumb a { color: var(--color-text-muted); }
.breadcrumb a:hover { color: var(--color-gold-light); }
.breadcrumb span { color: var(--color-border); }

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

@media (max-width: 768px) {
  .nav-list { display: none; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0;
    background: rgba(10,10,15,0.98); border-bottom: 1px solid var(--color-border); padding: 12px 0; }
  .nav-list.open { display: flex; }
  .nav-list a { padding: 12px 20px; border-radius: 0; }
  .nav-toggle { display: flex; }
  .hero-content { padding: 60px 20px; }
  .hero-stats { gap: 20px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .section { padding: 60px 0; }
  .video-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; }
  .btn { width: 100%; justify-content: center; }
  .search-tags { display: none; }
  .video-grid { grid-template-columns: 1fr; }
}

/* ================================================
   动画
   ================================================ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  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; }

/* ================================================
   粒子画布
   ================================================ */
#particles-canvas { opacity: 0.6; }

/* ================================================
   霓虹分割线
   ================================================ */
.neon-divider {
  height: 1px;
  background: var(--gradient-gold-purple);
  opacity: 0.4;
  margin: 0;
}