/* ============================================
   17c一起草 - 原创样式表
   品牌色系：糖心粉红 + 深夜蓝黑 + 金色高光
   设计风格：影视传媒 + 视频社区
   ============================================ */

/* CSS Variables */
:root {
  --tx-pink: #FF2D55;
  --tx-pink-light: #FF6B9D;
  --tx-pink-dark: #D4234A;
  --tx-gold: #FFB800;
  --tx-gold-light: #FFD54F;
  --tx-dark: #0F0F1A;
  --tx-dark-card: #1C1C32;
  --tx-dark-nav: #141428;
  --tx-dark-border: #2A2A45;
  --tx-text: #EAEAEA;
  --tx-text-sub: #8E8EA0;
  --tx-text-dim: #5A5A72;
  --tx-gradient: linear-gradient(135deg, #FF2D55, #FF6B9D);
  --tx-gradient-gold: linear-gradient(135deg, #FFB800, #FFD54F);
  --tx-shadow: 0 4px 24px rgba(255, 45, 85, 0.15);
  --tx-shadow-card: 0 2px 16px rgba(0, 0, 0, 0.3);
  --tx-radius: 12px;
  --tx-radius-sm: 8px;
  --tx-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --tx-font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --tx-max-width: 1280px;
}

/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--tx-font);
  background-color: var(--tx-dark);
  color: var(--tx-text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--tx-pink); text-decoration: none; transition: var(--tx-transition); }
a:hover { color: var(--tx-pink-light); }
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; color: var(--tx-text); }

/* Container */
.tx-container { max-width: var(--tx-max-width); margin: 0 auto; padding: 0 20px; }
.tx-section { padding: 70px 0; }
.tx-section-title {
  font-size: 2rem;
  text-align: center;
  margin-bottom: 16px;
  position: relative;
}
.tx-section-title span { color: var(--tx-pink); }
.tx-section-subtitle {
  text-align: center;
  color: var(--tx-text-sub);
  font-size: 1.05rem;
  margin-bottom: 48px;
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

/* ========== Header / Navigation ========== */
.tx-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(20, 20, 40, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--tx-dark-border);
  transition: var(--tx-transition);
}
.tx-header.scrolled { background: rgba(15, 15, 26, 0.98); box-shadow: 0 2px 20px rgba(0,0,0,0.4); }
.tx-nav { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.tx-logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.tx-logo img { height: 42px; width: auto; }
.tx-logo-text { font-size: 1.35rem; font-weight: 800; background: var(--tx-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.tx-nav-links { display: flex; align-items: center; gap: 6px; }
.tx-nav-links a {
  color: var(--tx-text-sub);
  font-size: 0.92rem;
  padding: 8px 14px;
  border-radius: var(--tx-radius-sm);
  transition: var(--tx-transition);
  white-space: nowrap;
}
.tx-nav-links a:hover, .tx-nav-links a.active {
  color: var(--tx-text);
  background: rgba(255, 45, 85, 0.12);
}
.tx-nav-links a.active { color: var(--tx-pink); }

/* Search Box */
.tx-search-bar {
  background: var(--tx-dark-nav);
  border-bottom: 1px solid var(--tx-dark-border);
  padding: 10px 0;
  margin-top: 68px;
}
.tx-search-wrap {
  max-width: 640px;
  margin: 0 auto;
  position: relative;
  display: flex;
  align-items: center;
}
.tx-search-input {
  width: 100%;
  padding: 10px 48px 10px 18px;
  border: 2px solid var(--tx-dark-border);
  border-radius: 24px;
  background: var(--tx-dark);
  color: var(--tx-text);
  font-size: 0.95rem;
  outline: none;
  transition: var(--tx-transition);
}
.tx-search-input:focus { border-color: var(--tx-pink); box-shadow: 0 0 0 3px rgba(255, 45, 85, 0.15); }
.tx-search-input::placeholder { color: var(--tx-text-dim); }
.tx-search-btn {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  border: none;
  border-radius: 50%;
  background: var(--tx-gradient);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: var(--tx-transition);
}
.tx-search-btn:hover { transform: translateY(-50%) scale(1.08); }

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

/* ========== Hero Banner ========== */
.tx-hero {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-top: 0;
}
.tx-hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.tx-hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15,15,26,0.5) 0%, rgba(15,15,26,0.85) 100%);
}
.tx-hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 80px 20px 60px;
  max-width: 800px;
}
.tx-hero h1 {
  font-size: 2.8rem;
  margin-bottom: 18px;
  letter-spacing: 1px;
}
.tx-hero h1 span { color: var(--tx-pink); }
.tx-hero-desc {
  font-size: 1.15rem;
  color: var(--tx-text-sub);
  margin-bottom: 32px;
  line-height: 1.8;
}
.tx-hero-tags { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 32px; }
.tx-hero-tags span {
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  background: rgba(255, 45, 85, 0.12);
  color: var(--tx-pink-light);
  border: 1px solid rgba(255, 45, 85, 0.25);
}
.tx-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 32px;
  border-radius: 28px;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--tx-transition);
}
.tx-btn-primary {
  background: var(--tx-gradient);
  color: #fff;
  box-shadow: 0 4px 18px rgba(255, 45, 85, 0.35);
}
.tx-btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 24px rgba(255, 45, 85, 0.5); color: #fff; }
.tx-btn-outline {
  background: transparent;
  color: var(--tx-text);
  border: 2px solid var(--tx-dark-border);
}
.tx-btn-outline:hover { border-color: var(--tx-pink); color: var(--tx-pink); }
.tx-hero-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ========== Video Cards ========== */
.tx-video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.tx-video-card {
  background: var(--tx-dark-card);
  border-radius: var(--tx-radius);
  overflow: hidden;
  border: 1px solid var(--tx-dark-border);
  transition: var(--tx-transition);
  position: relative;
}
.tx-video-card:hover { transform: translateY(-4px); box-shadow: var(--tx-shadow); border-color: rgba(255, 45, 85, 0.3); }
.tx-video-thumb {
  position: relative;
  padding-top: 56.25%;
  overflow: hidden;
  cursor: pointer;
}
.tx-video-thumb img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--tx-transition);
}
.tx-video-card:hover .tx-video-thumb img { transform: scale(1.05); }
.tx-video-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.8);
  width: 56px;
  height: 56px;
  background: rgba(255, 45, 85, 0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--tx-transition);
  z-index: 2;
}
.tx-video-play::after {
  content: '';
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent #fff;
  margin-left: 3px;
}
.tx-video-card:hover .tx-video-play { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.tx-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: 0.8rem;
  z-index: 2;
}
.tx-video-info { padding: 16px; }
.tx-video-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.tx-video-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--tx-text-sub);
  font-size: 0.85rem;
}
.tx-video-meta span { display: flex; align-items: center; gap: 4px; }
.tx-video-desc {
  font-size: 0.85rem;
  color: var(--tx-text-sub);
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.5;
}
.tx-video-tag {
  display: inline-block;
  padding: 2px 10px;
  background: rgba(255, 45, 85, 0.1);
  color: var(--tx-pink-light);
  border-radius: 12px;
  font-size: 0.78rem;
  margin-top: 8px;
}

/* ========== Service Modules ========== */
.tx-service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.tx-service-card {
  background: var(--tx-dark-card);
  border: 1px solid var(--tx-dark-border);
  border-radius: var(--tx-radius);
  padding: 32px 24px;
  text-align: center;
  transition: var(--tx-transition);
}
.tx-service-card:hover { transform: translateY(-4px); border-color: var(--tx-pink); box-shadow: var(--tx-shadow); }
.tx-service-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: var(--tx-gradient);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
}
.tx-service-card h3 { font-size: 1.15rem; margin-bottom: 12px; }
.tx-service-card p { color: var(--tx-text-sub); font-size: 0.92rem; line-height: 1.6; }

/* ========== Expert Cards ========== */
.tx-expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.tx-expert-card {
  background: var(--tx-dark-card);
  border: 1px solid var(--tx-dark-border);
  border-radius: var(--tx-radius);
  padding: 28px 20px;
  text-align: center;
  transition: var(--tx-transition);
}
.tx-expert-card:hover { border-color: var(--tx-gold); box-shadow: 0 4px 24px rgba(255, 184, 0, 0.15); }
.tx-expert-avatar {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 16px;
  border: 3px solid var(--tx-dark-border);
  transition: var(--tx-transition);
}
.tx-expert-card:hover .tx-expert-avatar { border-color: var(--tx-gold); }
.tx-expert-card h4 { font-size: 1.1rem; margin-bottom: 4px; }
.tx-expert-role { color: var(--tx-pink); font-size: 0.88rem; margin-bottom: 12px; }
.tx-expert-desc { color: var(--tx-text-sub); font-size: 0.88rem; margin-bottom: 16px; line-height: 1.6; }
.tx-expert-btns { display: flex; gap: 10px; justify-content: center; }
.tx-expert-btns a {
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.82rem;
  border: 1px solid var(--tx-dark-border);
  color: var(--tx-text-sub);
  transition: var(--tx-transition);
}
.tx-expert-btns a:hover { border-color: var(--tx-pink); color: var(--tx-pink); }

/* ========== FAQ Section ========== */
.tx-faq-list { max-width: 800px; margin: 0 auto; }
.tx-faq-item {
  background: var(--tx-dark-card);
  border: 1px solid var(--tx-dark-border);
  border-radius: var(--tx-radius-sm);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--tx-transition);
}
.tx-faq-item:hover { border-color: rgba(255, 45, 85, 0.3); }
.tx-faq-q {
  padding: 18px 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--tx-transition);
}
.tx-faq-q:hover { color: var(--tx-pink); }
.tx-faq-arrow {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--tx-transition);
  flex-shrink: 0;
  color: var(--tx-text-sub);
}
.tx-faq-item.active .tx-faq-arrow { transform: rotate(180deg); color: var(--tx-pink); }
.tx-faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.tx-faq-item.active .tx-faq-a { max-height: 300px; }
.tx-faq-a-inner {
  padding: 0 20px 18px;
  color: var(--tx-text-sub);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ========== Reviews ========== */
.tx-review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}
.tx-review-card {
  background: var(--tx-dark-card);
  border: 1px solid var(--tx-dark-border);
  border-radius: var(--tx-radius);
  padding: 24px;
  transition: var(--tx-transition);
}
.tx-review-card:hover { border-color: var(--tx-gold); }
.tx-review-stars { color: var(--tx-gold); font-size: 0.9rem; margin-bottom: 12px; letter-spacing: 2px; }
.tx-review-text { color: var(--tx-text-sub); font-size: 0.92rem; line-height: 1.7; margin-bottom: 16px; font-style: italic; }
.tx-review-author { display: flex; align-items: center; gap: 10px; }
.tx-review-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--tx-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
}
.tx-review-name { font-weight: 600; font-size: 0.9rem; }
.tx-review-date { color: var(--tx-text-dim); font-size: 0.8rem; }

/* ========== Partners ========== */
.tx-partner-wall {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
  align-items: center;
}
.tx-partner-item {
  background: var(--tx-dark-card);
  border: 1px solid var(--tx-dark-border);
  border-radius: var(--tx-radius-sm);
  padding: 20px 32px;
  transition: var(--tx-transition);
  color: var(--tx-text-sub);
  font-weight: 600;
  font-size: 0.95rem;
}
.tx-partner-item:hover { border-color: var(--tx-pink); color: var(--tx-text); }

/* ========== Community Features ========== */
.tx-community-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}
.tx-community-card {
  background: var(--tx-dark-card);
  border: 1px solid var(--tx-dark-border);
  border-radius: var(--tx-radius);
  padding: 24px;
  text-align: center;
  transition: var(--tx-transition);
}
.tx-community-card:hover { transform: translateY(-3px); border-color: var(--tx-pink); }
.tx-community-icon { font-size: 2.2rem; margin-bottom: 14px; }
.tx-community-card h4 { font-size: 1.05rem; margin-bottom: 8px; }
.tx-community-card p { color: var(--tx-text-sub); font-size: 0.88rem; }

/* ========== Footer ========== */
.tx-footer {
  background: var(--tx-dark-nav);
  border-top: 1px solid var(--tx-dark-border);
  padding: 48px 0 0;
}
.tx-footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 40px;
}
.tx-footer-brand p { color: var(--tx-text-sub); font-size: 0.9rem; margin-top: 14px; line-height: 1.7; }
.tx-footer h5 { font-size: 1rem; margin-bottom: 16px; color: var(--tx-text); }
.tx-footer-links a { display: block; color: var(--tx-text-sub); font-size: 0.9rem; padding: 4px 0; transition: var(--tx-transition); }
.tx-footer-links a:hover { color: var(--tx-pink); padding-left: 4px; }
.tx-footer-qr { display: flex; gap: 20px; }
.tx-footer-qr-item { text-align: center; }
.tx-footer-qr-item img { width: 110px; height: 110px; border-radius: var(--tx-radius-sm); margin-bottom: 6px; }
.tx-footer-qr-item span { font-size: 0.8rem; color: var(--tx-text-sub); }
.tx-footer-bottom {
  border-top: 1px solid var(--tx-dark-border);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.tx-footer-copy { color: var(--tx-text-dim); font-size: 0.85rem; }
.tx-footer-social { display: flex; gap: 12px; }
.tx-footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--tx-dark-card);
  border: 1px solid var(--tx-dark-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--tx-text-sub);
  font-size: 0.85rem;
  transition: var(--tx-transition);
}
.tx-footer-social a:hover { background: var(--tx-pink); border-color: var(--tx-pink); color: #fff; }

/* ========== Breadcrumb ========== */
.tx-breadcrumb {
  padding: 16px 0;
  margin-top: 68px;
  background: var(--tx-dark-nav);
  border-bottom: 1px solid var(--tx-dark-border);
}
.tx-breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--tx-text-sub);
}
.tx-breadcrumb-list a { color: var(--tx-text-sub); }
.tx-breadcrumb-list a:hover { color: var(--tx-pink); }
.tx-breadcrumb-sep { color: var(--tx-text-dim); }

/* ========== Inner Page Content ========== */
.tx-page-header {
  padding: 60px 0 40px;
  text-align: center;
  background: linear-gradient(180deg, var(--tx-dark-nav) 0%, var(--tx-dark) 100%);
}
.tx-page-header h1 { font-size: 2.2rem; margin-bottom: 12px; }
.tx-page-header h1 span { color: var(--tx-pink); }
.tx-page-header p { color: var(--tx-text-sub); font-size: 1.05rem; max-width: 600px; margin: 0 auto; }
.tx-content-block {
  background: var(--tx-dark-card);
  border: 1px solid var(--tx-dark-border);
  border-radius: var(--tx-radius);
  padding: 32px;
  margin-bottom: 24px;
}
.tx-content-block h2 { font-size: 1.5rem; margin-bottom: 16px; }
.tx-content-block h2 span { color: var(--tx-pink); }
.tx-content-block p { color: var(--tx-text-sub); margin-bottom: 14px; line-height: 1.8; }

/* ========== Share Buttons ========== */
.tx-share { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.tx-share-label { color: var(--tx-text-sub); font-size: 0.9rem; }
.tx-share a {
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.82rem;
  background: var(--tx-dark-card);
  border: 1px solid var(--tx-dark-border);
  color: var(--tx-text-sub);
  transition: var(--tx-transition);
}
.tx-share a:hover { border-color: var(--tx-pink); color: var(--tx-pink); }

/* ========== How-To Guide ========== */
.tx-howto-steps { max-width: 700px; margin: 0 auto; }
.tx-howto-step {
  display: flex;
  gap: 20px;
  margin-bottom: 28px;
  align-items: flex-start;
}
.tx-howto-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--tx-gradient);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.tx-howto-text h4 { font-size: 1.05rem; margin-bottom: 6px; }
.tx-howto-text p { color: var(--tx-text-sub); font-size: 0.92rem; }

/* ========== Contact Info ========== */
.tx-contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}
.tx-contact-item {
  background: var(--tx-dark-card);
  border: 1px solid var(--tx-dark-border);
  border-radius: var(--tx-radius);
  padding: 24px;
  text-align: center;
}
.tx-contact-item h4 { font-size: 1rem; margin-bottom: 8px; }
.tx-contact-item p { color: var(--tx-text-sub); font-size: 0.9rem; }
.tx-contact-icon { font-size: 2rem; margin-bottom: 12px; color: var(--tx-pink); }

/* ========== AI Section ========== */
.tx-ai-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.tx-ai-card {
  background: var(--tx-dark-card);
  border: 1px solid var(--tx-dark-border);
  border-radius: var(--tx-radius);
  padding: 28px;
  transition: var(--tx-transition);
  position: relative;
  overflow: hidden;
}
.tx-ai-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--tx-gradient-gold);
}
.tx-ai-card:hover { transform: translateY(-3px); box-shadow: 0 4px 24px rgba(255, 184, 0, 0.12); }
.tx-ai-card h3 { font-size: 1.1rem; margin-bottom: 10px; }
.tx-ai-card p { color: var(--tx-text-sub); font-size: 0.9rem; line-height: 1.6; }

/* ========== Stats Bar ========== */
.tx-stats {
  background: var(--tx-dark-card);
  border-top: 1px solid var(--tx-dark-border);
  border-bottom: 1px solid var(--tx-dark-border);
  padding: 32px 0;
}
.tx-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}
.tx-stat-num {
  font-size: 2rem;
  font-weight: 800;
  background: var(--tx-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.tx-stat-label { color: var(--tx-text-sub); font-size: 0.9rem; margin-top: 4px; }

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .tx-footer-grid { grid-template-columns: 1fr 1fr; }
  .tx-stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .tx-nav-links { display: none; }
  .tx-menu-toggle { display: flex; }
  .tx-nav-links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--tx-dark-nav);
    border-bottom: 1px solid var(--tx-dark-border);
    padding: 16px;
    gap: 4px;
  }
  .tx-hero h1 { font-size: 1.8rem; }
  .tx-hero-desc { font-size: 1rem; }
  .tx-section-title { font-size: 1.5rem; }
  .tx-footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .tx-video-grid { grid-template-columns: 1fr; }
  .tx-service-grid { grid-template-columns: 1fr; }
  .tx-expert-grid { grid-template-columns: 1fr; }
  .tx-review-grid { grid-template-columns: 1fr; }
  .tx-stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .tx-stat-num { font-size: 1.5rem; }
  .tx-footer-bottom { flex-direction: column; text-align: center; }
  .tx-hero { min-height: 420px; }
  .tx-section { padding: 48px 0; }
}

@media (max-width: 480px) {
  .tx-hero h1 { font-size: 1.5rem; }
  .tx-hero-content { padding: 60px 16px 40px; }
  .tx-container { padding: 0 16px; }
  .tx-community-grid { grid-template-columns: 1fr; }
  .tx-contact-grid { grid-template-columns: 1fr; }
}

/* ========== Lazy Load Placeholder ========== */
.tx-lazy { opacity: 0; transition: opacity 0.5s ease; }
.tx-lazy.loaded { opacity: 1; }

/* ========== Scrollbar ========== */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--tx-dark); }
::-webkit-scrollbar-thumb { background: var(--tx-dark-border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--tx-pink); }

/* ========== Selection ========== */
::selection { background: rgba(255, 45, 85, 0.3); color: #fff; }

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

/* ========== MCP Service Frontend (Decorative) ========== */
.tx-mcp-widget {
  background: var(--tx-dark-card);
  border: 1px solid var(--tx-dark-border);
  border-radius: var(--tx-radius-sm);
  padding: 16px;
  margin-top: 20px;
}
.tx-mcp-widget h6 { font-size: 0.85rem; color: var(--tx-text-dim); margin-bottom: 8px; }
.tx-mcp-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--tx-text-sub);
}
.tx-mcp-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #4ADE80;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}