/* ============================================
   品牌品牌网站 - 原创CSS样式表
   配色方案：深紫暗夜 + 烈焰金橙
   website
   ============================================ */

/* CSS Variables */
:root {
  --primary-dark: #1a0a2e;
  --primary-red: #e63946;
  --accent-gold: #f4a261;
  --bg-night: #0d0d1a;
  --bg-card: #161630;
  --bg-card-hover: #1e1e45;
  --text-light: #edf2f4;
  --text-muted: #a8a8c0;
  --text-gold: #f4a261;
  --border-purple: #2d1b4e;
  --gradient-hero: linear-gradient(135deg, #1a0a2e 0%, #2d0a3e 40%, #3d0a1e 100%);
  --gradient-card: linear-gradient(180deg, #1e1245 0%, #161630 100%);
  --gradient-btn: linear-gradient(135deg, #e63946 0%, #f4a261 100%);
  --gradient-btn-hover: linear-gradient(135deg, #f4a261 0%, #e63946 100%);
  --shadow-card: 0 4px 24px rgba(230, 57, 70, 0.12);
  --shadow-hover: 0 8px 32px rgba(244, 162, 97, 0.2);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: all 0.3s ease;
}

/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--bg-night);
  color: var(--text-light);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: var(--accent-gold); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-red); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; }

/* Container */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section-padding { padding: 60px 0; }

/* ============ HEADER ============ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(13, 13, 26, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-purple);
  transition: var(--transition);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  max-width: 1200px;
  margin: 0 auto;
}
.logo-wrap { display: flex; align-items: center; gap: 10px; }
.logo-wrap img { height: 48px; width: auto; }
.logo-text {
  font-size: 1.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary-red), var(--accent-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Navigation */
.main-nav { display: flex; align-items: center; gap: 6px; }
.main-nav a {
  color: var(--text-light);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}
.main-nav a:hover, .main-nav a.active {
  color: var(--accent-gold);
  background: rgba(244, 162, 97, 0.1);
}
.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--gradient-btn);
  border-radius: 1px;
  transition: var(--transition);
}
.main-nav a:hover::after, .main-nav a.active::after { width: 60%; }

/* Mobile Menu Toggle */
.z2enhfi6 {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}
.z2enhfi6 span {
  width: 24px;
  height: 2px;
  background: var(--text-light);
  border-radius: 2px;
  transition: var(--transition);
}

/* Search Bar */
.search-bar {
  background: var(--primary-dark);
  padding: 12px 0;
  border-bottom: 1px solid var(--border-purple);
  margin-top: 72px;
}
.search-bar .container { display: flex; justify-content: center; }
.search-form {
  display: flex;
  max-width: 600px;
  width: 100%;
  border-radius: 30px;
  overflow: hidden;
  border: 1px solid var(--border-purple);
  background: var(--bg-card);
}
.search-form input {
  flex: 1;
  padding: 10px 20px;
  border: none;
  background: transparent;
  color: var(--text-light);
  font-size: 0.95rem;
  outline: none;
}
.search-form input::placeholder { color: var(--text-muted); }
.search-form button {
  padding: 10px 24px;
  background: var(--gradient-btn);
  border: none;
  color: #fff;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
  font-weight: 600;
}
.search-form button:hover { opacity: 0.9; }

/* Breadcrumb */
.breadcrumb {
  padding: 12px 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--accent-gold); }
.breadcrumb span { margin: 0 6px; }

/* ============ HERO BANNER ============ */
.hero-section {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--gradient-hero);
}
.hero-bg {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.5;
  transition: opacity 1s ease;
}
.hero-overlay {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(180deg, rgba(13,13,26,0.3) 0%, rgba(13,13,26,0.8) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 40px 20px;
}
.hero-content h1 {
  font-size: 2.8rem;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #fff, var(--accent-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-content h2 {
  font-size: 1.3rem;
  color: var(--text-muted);
  font-weight: 400;
  margin-bottom: 28px;
}
.hero-tags { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-bottom: 28px; }
.hero-tags span {
  padding: 6px 16px;
  background: rgba(244, 162, 97, 0.15);
  border: 1px solid rgba(244, 162, 97, 0.3);
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--accent-gold);
}
.hero-btn {
  display: inline-block;
  padding: 14px 36px;
  background: var(--gradient-btn);
  color: #fff;
  border-radius: 30px;
  font-size: 1.05rem;
  font-weight: 600;
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(230, 57, 70, 0.3);
}
.hero-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(230, 57, 70, 0.4);
  color: #fff;
}

/* ============ SECTION TITLES ============ */
.section-title {
  text-align: center;
  margin-bottom: 40px;
}
.section-title h2 {
  font-size: 2rem;
  margin-bottom: 10px;
  color: var(--text-light);
}
.section-title h2 em {
  font-style: normal;
  color: var(--accent-gold);
}
.section-title p {
  color: var(--text-muted);
  font-size: 1rem;
  max-width: 600px;
  margin: 0 auto;
}
.ujdq1bqe {
  width: 60px;
  height: 3px;
  background: var(--gradient-btn);
  margin: 12px auto;
  border-radius: 2px;
}

/* ============ VIDEO CARDS ============ */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.video-card {
  background: var(--gradient-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-purple);
  transition: var(--transition);
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(244, 162, 97, 0.3);
}
.video-thumb {
  position: relative;
  padding-top: 56.25%;
  overflow: hidden;
}
.video-thumb img {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.video-card:hover .video-thumb img { transform: scale(1.05); }
.play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 56px;
  height: 56px;
  background: rgba(230, 57, 70, 0.85);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
  z-index: 2;
}
.play-btn::after {
  content: '';
  width: 0;
  height: 0;
  border-left: 18px solid #fff;
  border-top: 11px solid transparent;
  border-bottom: 11px solid transparent;
  margin-left: 4px;
}
.video-card:hover .play-btn { opacity: 1; }
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.75);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.8rem;
  color: #fff;
  z-index: 2;
}
.video-info { padding: 14px 16px; }
.video-info h3 {
  font-size: 1rem;
  margin-bottom: 8px;
  color: var(--text-light);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-meta {
  display: flex;
  gap: 14px;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.video-meta span { display: flex; align-items: center; gap: 4px; }

/* ============ FEATURE CARDS ============ */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.feature-card {
  background: var(--gradient-card);
  border-radius: var(--radius);
  padding: 28px 24px;
  border: 1px solid var(--border-purple);
  transition: var(--transition);
  text-align: center;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(244, 162, 97, 0.3);
}
.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  background: rgba(244, 162, 97, 0.12);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
}
.feature-card h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
  color: var(--accent-gold);
}
.feature-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ============ EXPERT SECTION ============ */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.expert-card {
  background: var(--gradient-card);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border-purple);
  text-align: center;
  transition: var(--transition);
}
.expert-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.expert-avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  margin: 0 auto 14px;
  overflow: hidden;
  border: 3px solid var(--accent-gold);
}
.expert-avatar img { width: 100%; height: 100%; object-fit: cover; }
.expert-card h3 { font-size: 1.1rem; margin-bottom: 4px; }
.expert-card .role { color: var(--accent-gold); font-size: 0.85rem; margin-bottom: 10px; }
.expert-card p { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 14px; }
.expert-btns { display: flex; gap: 10px; justify-content: center; }
.btn-sm {
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  transition: var(--transition);
  border: 1px solid var(--accent-gold);
  color: var(--accent-gold);
  background: transparent;
  cursor: pointer;
}
.btn-sm:hover { background: var(--accent-gold); color: var(--bg-night); }
.btn-sm.primary {
  background: var(--gradient-btn);
  border-color: transparent;
  color: #fff;
}

/* ============ PARTNER LOGOS ============ */
.jhvkx {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 30px;
  align-items: center;
}
.ql1bwp {
  padding: 16px 24px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-purple);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-muted);
  transition: var(--transition);
}
.ql1bwp:hover { border-color: var(--accent-gold); color: var(--accent-gold); }

/* ============ FAQ SECTION ============ */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  border: 1px solid var(--border-purple);
  overflow: hidden;
}
.faq-question {
  padding: 16px 20px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
}
.faq-question:hover { color: var(--accent-gold); }
.faq-arrow {
  transition: transform 0.3s ease;
  font-size: 1.2rem;
  color: var(--accent-gold);
}
.faq-item.active .faq-arrow { transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}
.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 20px 16px;
}
.faq-answer p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.7; }

/* ============ REVIEWS ============ */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.review-card {
  background: var(--gradient-card);
  border-radius: var(--radius);
  padding: 22px;
  border: 1px solid var(--border-purple);
}
.review-stars { color: var(--accent-gold); margin-bottom: 10px; font-size: 0.9rem; }
.review-text { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 12px; line-height: 1.6; font-style: italic; }
.review-author { font-size: 0.85rem; color: var(--text-light); font-weight: 600; }
.review-date { font-size: 0.75rem; color: var(--text-muted); margin-top: 4px; }

/* ============ CONTACT SECTION ============ */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 20px;
}
.contact-item {
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  padding: 20px;
  border: 1px solid var(--border-purple);
  text-align: center;
}
.contact-item h4 { color: var(--accent-gold); margin-bottom: 8px; font-size: 1rem; }
.contact-item p { color: var(--text-muted); font-size: 0.9rem; }

/* ============ FOOTER ============ */
.site-footer {
  background: var(--primary-dark);
  border-top: 1px solid var(--border-purple);
  padding: 40px 0 20px;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 30px;
  margin-bottom: 30px;
}
.footer-col h4 {
  color: var(--accent-gold);
  font-size: 1rem;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-purple);
}
.footer-col p, .footer-col a {
  color: var(--text-muted);
  font-size: 0.85rem;
  line-height: 2;
  display: block;
}
.footer-col a:hover { color: var(--accent-gold); }
.footer-qr { display: flex; gap: 20px; margin-top: 10px; }
.footer-qr img { width: 100px; height: 100px; border-radius: var(--radius-sm); }
.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid var(--border-purple);
  font-size: 0.8rem;
  color: var(--text-muted);
}
.footer-bottom a { color: var(--accent-gold); }

/* Social Share */
.1cww79xy {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin: 20px 0;
}
.82xzq {
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  border: 1px solid var(--border-purple);
  background: var(--bg-card);
  color: var(--text-light);
  cursor: pointer;
  transition: var(--transition);
}
.82xzq:hover { border-color: var(--accent-gold); color: var(--accent-gold); }

/* ============ HOW-TO GUIDE ============ */
.m6ew1k {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
  counter-reset: step;
}
.snuqo {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border-purple);
  position: relative;
  counter-increment: step;
}
.snuqo::before {
  content: counter(step);
  position: absolute;
  top: -12px;
  left: 20px;
  width: 32px;
  height: 32px;
  background: var(--gradient-btn);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  color: #fff;
}
.snuqo h4 { margin-bottom: 8px; color: var(--text-light); font-size: 1rem; }
.snuqo p { color: var(--text-muted); font-size: 0.85rem; }

/* ============ TAGS ============ */
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.tag {
  padding: 4px 12px;
  background: rgba(244, 162, 97, 0.1);
  border: 1px solid rgba(244, 162, 97, 0.25);
  border-radius: 16px;
  font-size: 0.78rem;
  color: var(--accent-gold);
}

/* ============ INNER PAGE LAYOUT ============ */
.page-hero {
  position: relative;
  min-height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-hero);
  overflow: hidden;
}
.page-hero-bg {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.35;
}
.page-hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 40px 20px;
}
.page-hero-content h1 { font-size: 2.2rem; margin-bottom: 10px; }
.page-hero-content p { color: var(--text-muted); font-size: 1rem; }

.content-section { padding: 40px 0; }
.content-section h2 { font-size: 1.6rem; margin-bottom: 16px; color: var(--accent-gold); }
.content-section h3 { font-size: 1.2rem; margin-bottom: 12px; color: var(--text-light); }
.content-section p { color: var(--text-muted); margin-bottom: 16px; line-height: 1.8; }

/* ============ RESPONSIVE ============ */
@media (max-width: 768px) {
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(13, 13, 26, 0.98);
    flex-direction: column;
    padding: 16px;
    border-bottom: 1px solid var(--border-purple);
  }
  .main-nav.active { display: flex; }
  .z2enhfi6 { display: flex; }
  .hero-content h1 { font-size: 1.8rem; }
  .hero-content h2 { font-size: 1rem; }
  .hero-section { min-height: 380px; }
  .video-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
  .feature-grid { grid-template-columns: 1fr; }
  .expert-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .1cww79xy { flex-wrap: wrap; }
  .search-form { max-width: 100%; }
  .page-hero { min-height: 220px; }
  .page-hero-content h1 { font-size: 1.6rem; }
}

@media (max-width: 480px) {
  .hero-content h1 { font-size: 1.5rem; }
  .section-title h2 { font-size: 1.5rem; }
  .video-grid { grid-template-columns: 1fr; }
  .review-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

/* ============ ANIMATIONS ============ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.k3bkppzg { animation: fadeInUp 0.6s ease forwards; }

/* Lazy load placeholder */
.s1a49 {
  opacity: 0;
  transition: opacity 0.5s ease;
}
.s1a49.loaded { opacity: 1; }

/* MCP Service placeholder */
.n8770 {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 20px;
  border: 1px solid var(--border-purple);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}