/* ========================================
   糖心vlog - 原创样式表
   品牌色系：甜心玫红 + 梦幻紫
   ======================================== */

/* CSS Variables */
:root {
  --tx-primary: #E8456B;
  --tx-primary-light: #FF7E9D;
  --tx-accent: #6C3AED;
  --tx-dark: #1A1025;
  --tx-light-bg: #FFF5F7;
  --tx-text: #2D1B3D;
  --tx-text-sub: #6B5B7B;
  --tx-white: #FFFFFF;
  --tx-border: #F0E4F0;
  --tx-gradient: linear-gradient(135deg, #E8456B 0%, #6C3AED 100%);
  --tx-gradient-h: linear-gradient(90deg, #E8456B 0%, #6C3AED 100%);
  --tx-shadow: 0 4px 24px rgba(108, 58, 237, 0.10);
  --tx-shadow-hover: 0 8px 32px rgba(232, 69, 107, 0.18);
  --tx-radius: 12px;
  --tx-radius-sm: 8px;
  --tx-radius-lg: 20px;
  --tx-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  color: var(--tx-text);
  background: var(--tx-white);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: var(--tx-primary); text-decoration: none; transition: var(--tx-transition); }
a:hover { color: var(--tx-accent); }
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: 1200px; margin: 0 auto; padding: 0 20px; }
.tx-container-wide { max-width: 1400px; margin: 0 auto; padding: 0 20px; }

/* ========== Header / Navigation ========== */
.tx-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(26, 16, 37, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(232, 69, 107, 0.15);
  transition: var(--tx-transition);
}
.tx-header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 68px; max-width: 1400px; margin: 0 auto; padding: 0 24px;
}
.tx-logo { display: flex; align-items: center; gap: 10px; }
.tx-logo img { width: 40px; height: 40px; border-radius: 8px; }
.tx-logo-text {
  font-size: 1.3rem; font-weight: 800; color: var(--tx-white);
  background: var(--tx-gradient-h); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
}
.tx-nav { display: flex; align-items: center; gap: 6px; }
.tx-nav a {
  color: rgba(255,255,255,0.78); font-size: 0.95rem; padding: 8px 16px;
  border-radius: var(--tx-radius-sm); transition: var(--tx-transition);
  font-weight: 500; position: relative;
}
.tx-nav a:hover, .tx-nav a.active {
  color: var(--tx-white); background: rgba(232, 69, 107, 0.18);
}
.tx-nav a.active::after {
  content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%);
  width: 20px; height: 3px; background: var(--tx-gradient-h); border-radius: 2px;
}

/* Search Box */
.tx-search-bar {
  background: var(--tx-light-bg); padding: 12px 0;
  border-bottom: 1px solid var(--tx-border);
  margin-top: 68px;
}
.tx-search-wrap {
  max-width: 680px; margin: 0 auto; display: flex; gap: 0;
  background: var(--tx-white); border-radius: 50px;
  border: 2px solid var(--tx-border); overflow: hidden;
  transition: var(--tx-transition);
}
.tx-search-wrap:focus-within { border-color: var(--tx-primary); box-shadow: 0 0 0 3px rgba(232,69,107,0.12); }
.tx-search-input {
  flex: 1; border: none; outline: none; padding: 12px 24px;
  font-size: 0.95rem; background: transparent; color: var(--tx-text);
}
.tx-search-input::placeholder { color: var(--tx-text-sub); }
.tx-search-btn {
  background: var(--tx-gradient); color: var(--tx-white); border: none;
  padding: 12px 28px; font-size: 0.95rem; cursor: pointer;
  font-weight: 600; transition: var(--tx-transition);
}
.tx-search-btn:hover { opacity: 0.9; }

/* Mobile Menu Toggle */
.tx-menu-toggle {
  display: none; background: none; border: none; cursor: pointer;
  width: 36px; height: 36px; position: relative;
}
.tx-menu-toggle span {
  display: block; width: 24px; height: 2px; background: var(--tx-white);
  position: absolute; left: 6px; transition: var(--tx-transition);
}
.tx-menu-toggle span:nth-child(1) { top: 10px; }
.tx-menu-toggle span:nth-child(2) { top: 17px; }
.tx-menu-toggle span:nth-child(3) { top: 24px; }

/* ========== Hero Banner ========== */
.tx-hero {
  position: relative; height: 560px; overflow: hidden;
  background: var(--tx-dark);
}
.tx-hero-slides { position: relative; width: 100%; height: 100%; }
.tx-hero-slide {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  opacity: 0; transition: opacity 1s ease;
}
.tx-hero-slide.active { opacity: 1; }
.tx-hero-slide img {
  width: 100%; height: 100%; object-fit: cover;
  filter: brightness(0.55);
}
.tx-hero-content {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  text-align: center; z-index: 10; width: 90%; max-width: 800px;
}
.tx-hero-content h1 {
  font-size: 2.8rem; color: var(--tx-white); margin-bottom: 16px;
  text-shadow: 0 2px 16px rgba(0,0,0,0.3);
}
.tx-hero-content h1 span {
  background: var(--tx-gradient-h); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
}
.tx-hero-content p {
  font-size: 1.15rem; color: rgba(255,255,255,0.88);
  margin-bottom: 28px; line-height: 1.8;
}
.tx-hero-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.tx-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 32px; border-radius: 50px; font-weight: 600;
  font-size: 1rem; transition: var(--tx-transition); cursor: pointer;
  border: none; text-decoration: none;
}
.tx-btn-primary {
  background: var(--tx-gradient); color: var(--tx-white);
  box-shadow: 0 4px 16px rgba(232,69,107,0.3);
}
.tx-btn-primary:hover {
  transform: translateY(-2px); box-shadow: 0 6px 24px rgba(232,69,107,0.4);
  color: var(--tx-white);
}
.tx-btn-outline {
  background: transparent; color: var(--tx-white);
  border: 2px solid rgba(255,255,255,0.5);
}
.tx-btn-outline:hover {
  border-color: var(--tx-primary); background: rgba(232,69,107,0.15);
  color: var(--tx-white);
}
.tx-hero-dots {
  position: absolute; bottom: 24px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 10px; z-index: 10;
}
.tx-hero-dot {
  width: 12px; height: 12px; border-radius: 50%;
  background: rgba(255,255,255,0.4); cursor: pointer;
  transition: var(--tx-transition); border: none;
}
.tx-hero-dot.active { background: var(--tx-primary); width: 32px; border-radius: 6px; }

/* ========== Section Common ========== */
.tx-section {
  padding: 72px 0;
}
.tx-section-alt { background: var(--tx-light-bg); }
.tx-section-dark { background: var(--tx-dark); color: var(--tx-white); }
.tx-section-dark h2, .tx-section-dark h3, .tx-section-dark h4 { color: var(--tx-white); }
.tx-section-header {
  text-align: center; margin-bottom: 48px;
}
.tx-section-header h2 {
  font-size: 2rem; margin-bottom: 12px;
}
.tx-section-header h2 span {
  background: var(--tx-gradient-h); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
}
.tx-section-header p {
  font-size: 1.05rem; color: var(--tx-text-sub); max-width: 640px; margin: 0 auto;
}
.tx-section-dark .tx-section-header p { color: rgba(255,255,255,0.7); }
.tx-tag {
  display: inline-block; padding: 4px 14px; border-radius: 50px;
  font-size: 0.8rem; font-weight: 600; margin-bottom: 12px;
  background: rgba(232,69,107,0.1); color: var(--tx-primary);
}
.tx-section-dark .tx-tag { background: rgba(232,69,107,0.2); }

/* ========== Video Cards ========== */
.tx-video-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.tx-video-card {
  background: var(--tx-white); border-radius: var(--tx-radius);
  overflow: hidden; box-shadow: var(--tx-shadow);
  transition: var(--tx-transition); position: relative;
}
.tx-video-card:hover {
  transform: translateY(-6px); box-shadow: var(--tx-shadow-hover);
}
.tx-video-thumb {
  position: relative; padding-top: 56.25%; overflow: hidden;
}
.tx-video-thumb img {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  object-fit: cover; transition: transform 0.5s ease;
}
.tx-video-card:hover .tx-video-thumb img { transform: scale(1.06); }
.tx-video-play {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%) scale(0.8);
  width: 56px; height: 56px; background: rgba(232,69,107,0.9);
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  opacity: 0; transition: var(--tx-transition); z-index: 5;
}
.tx-video-play::after {
  content: ''; width: 0; height: 0;
  border-left: 18px solid var(--tx-white);
  border-top: 11px solid transparent;
  border-bottom: 11px solid transparent;
  margin-left: 4px;
}
.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: var(--tx-white);
  padding: 2px 8px; border-radius: 4px; font-size: 0.78rem;
  font-weight: 500;
}
.tx-video-info { padding: 14px 16px; }
.tx-video-info h4 {
  font-size: 0.95rem; margin-bottom: 8px; font-weight: 600;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden; line-height: 1.4;
}
.tx-video-meta {
  display: flex; align-items: center; gap: 14px;
  font-size: 0.8rem; color: var(--tx-text-sub);
}
.tx-video-meta span { display: flex; align-items: center; gap: 4px; }

/* ========== Service Cards ========== */
.tx-service-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
}
.tx-service-card {
  background: var(--tx-white); border-radius: var(--tx-radius-lg);
  padding: 36px 28px; text-align: center;
  border: 1px solid var(--tx-border);
  transition: var(--tx-transition); position: relative; overflow: hidden;
}
.tx-service-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 4px; background: var(--tx-gradient-h);
  transform: scaleX(0); transition: transform 0.4s ease;
  transform-origin: left;
}
.tx-service-card:hover::before { transform: scaleX(1); }
.tx-service-card:hover {
  transform: translateY(-4px); box-shadow: var(--tx-shadow-hover);
  border-color: transparent;
}
.tx-service-icon {
  width: 64px; height: 64px; border-radius: 16px;
  background: var(--tx-light-bg); display: flex;
  align-items: center; justify-content: center;
  margin: 0 auto 20px; font-size: 1.8rem;
}
.tx-service-card h4 { font-size: 1.15rem; margin-bottom: 10px; }
.tx-service-card p { font-size: 0.9rem; color: var(--tx-text-sub); line-height: 1.7; }

/* ========== Expert Cards ========== */
.tx-expert-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.tx-expert-card {
  background: var(--tx-white); border-radius: var(--tx-radius-lg);
  padding: 28px 20px; text-align: center;
  box-shadow: var(--tx-shadow); transition: var(--tx-transition);
}
.tx-expert-card:hover { transform: translateY(-4px); box-shadow: var(--tx-shadow-hover); }
.tx-expert-avatar {
  width: 96px; height: 96px; border-radius: 50%;
  margin: 0 auto 16px; overflow: hidden;
  border: 3px solid var(--tx-light-bg);
  box-shadow: 0 4px 12px rgba(232,69,107,0.15);
}
.tx-expert-avatar img { width: 100%; height: 100%; object-fit: cover; }
.tx-expert-card h4 { font-size: 1.05rem; margin-bottom: 4px; }
.tx-expert-card .tx-expert-title {
  font-size: 0.85rem; color: var(--tx-primary); margin-bottom: 10px; font-weight: 500;
}
.tx-expert-card p { font-size: 0.85rem; color: var(--tx-text-sub); margin-bottom: 14px; line-height: 1.6; }
.tx-expert-btns { display: flex; gap: 8px; justify-content: center; }
.tx-btn-sm {
  padding: 6px 16px; font-size: 0.8rem; border-radius: 50px;
  font-weight: 500; transition: var(--tx-transition); cursor: pointer;
  border: none; text-decoration: none;
}
.tx-btn-sm.primary { background: var(--tx-gradient); color: var(--tx-white); }
.tx-btn-sm.outline { background: transparent; color: var(--tx-primary); border: 1px solid var(--tx-primary); }
.tx-btn-sm:hover { transform: translateY(-1px); }

/* ========== Partners ========== */
.tx-partner-grid {
  display: flex; flex-wrap: wrap; gap: 24px; justify-content: center; align-items: center;
}
.tx-partner-item {
  width: 160px; height: 80px; background: var(--tx-white);
  border-radius: var(--tx-radius); display: flex;
  align-items: center; justify-content: center;
  border: 1px solid var(--tx-border); transition: var(--tx-transition);
  font-weight: 700; font-size: 0.95rem; color: var(--tx-text-sub);
}
.tx-partner-item:hover {
  border-color: var(--tx-primary); box-shadow: var(--tx-shadow);
  color: var(--tx-primary);
}

/* ========== Reviews ========== */
.tx-review-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px;
}
.tx-review-card {
  background: var(--tx-white); border-radius: var(--tx-radius-lg);
  padding: 28px; box-shadow: var(--tx-shadow);
  transition: var(--tx-transition); position: relative;
}
.tx-review-card:hover { box-shadow: var(--tx-shadow-hover); }
.tx-review-card::before {
  content: '\201C'; position: absolute; top: 16px; left: 24px;
  font-size: 3.5rem; color: rgba(232,69,107,0.12); font-family: Georgia, serif;
  line-height: 1;
}
.tx-review-stars { color: #FFB800; font-size: 0.9rem; margin-bottom: 12px; letter-spacing: 2px; }
.tx-review-card p { font-size: 0.95rem; color: var(--tx-text); line-height: 1.8; margin-bottom: 16px; }
.tx-review-author { display: flex; align-items: center; gap: 12px; }
.tx-review-author-avatar {
  width: 42px; height: 42px; border-radius: 50%;
  background: var(--tx-gradient); display: flex;
  align-items: center; justify-content: center;
  color: var(--tx-white); font-weight: 700; font-size: 1rem;
}
.tx-review-author-info .name { font-weight: 600; font-size: 0.9rem; }
.tx-review-author-info .role { font-size: 0.8rem; color: var(--tx-text-sub); }

/* ========== FAQ ========== */
.tx-faq-list { max-width: 800px; margin: 0 auto; }
.tx-faq-item {
  background: var(--tx-white); border-radius: var(--tx-radius);
  margin-bottom: 12px; overflow: hidden;
  border: 1px solid var(--tx-border);
  transition: var(--tx-transition);
}
.tx-faq-item:hover { border-color: rgba(232,69,107,0.3); }
.tx-faq-q {
  padding: 18px 24px; cursor: pointer; display: flex;
  justify-content: space-between; align-items: center;
  font-weight: 600; font-size: 1rem; user-select: none;
  transition: var(--tx-transition);
}
.tx-faq-q:hover { color: var(--tx-primary); }
.tx-faq-q .arrow {
  width: 24px; height: 24px; border-radius: 50%;
  background: var(--tx-light-bg); display: flex;
  align-items: center; justify-content: center;
  font-size: 0.8rem; transition: transform 0.3s ease;
  flex-shrink: 0;
}
.tx-faq-item.open .tx-faq-q .arrow { transform: rotate(180deg); }
.tx-faq-a {
  max-height: 0; overflow: hidden; transition: max-height 0.4s ease;
}
.tx-faq-a-inner {
  padding: 0 24px 18px; font-size: 0.93rem; color: var(--tx-text-sub); line-height: 1.8;
}

/* ========== Contact ========== */
.tx-contact-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start;
}
.tx-contact-info h3 { font-size: 1.3rem; margin-bottom: 20px; }
.tx-contact-item {
  display: flex; gap: 14px; margin-bottom: 18px; align-items: flex-start;
}
.tx-contact-icon {
  width: 42px; height: 42px; border-radius: 10px;
  background: var(--tx-light-bg); display: flex;
  align-items: center; justify-content: center;
  font-size: 1.1rem; flex-shrink: 0;
}
.tx-contact-item .label { font-size: 0.85rem; color: var(--tx-text-sub); }
.tx-contact-item .value { font-weight: 600; font-size: 0.95rem; }
.tx-contact-qr {
  display: flex; gap: 24px; justify-content: center;
}
.tx-contact-qr-item { text-align: center; }
.tx-contact-qr-item img {
  width: 140px; height: 140px; border-radius: var(--tx-radius);
  border: 2px solid var(--tx-border); margin-bottom: 8px;
}
.tx-contact-qr-item p { font-size: 0.85rem; color: var(--tx-text-sub); font-weight: 500; }

/* ========== Footer ========== */
.tx-footer {
  background: var(--tx-dark); color: rgba(255,255,255,0.7);
  padding: 48px 0 0;
}
.tx-footer-inner {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px;
  padding-bottom: 36px; border-bottom: 1px solid rgba(255,255,255,0.08);
}
.tx-footer-brand .tx-logo { margin-bottom: 14px; }
.tx-footer-brand p { font-size: 0.9rem; line-height: 1.7; margin-bottom: 16px; }
.tx-footer h5 {
  color: var(--tx-white); font-size: 1rem; margin-bottom: 16px; font-weight: 600;
}
.tx-footer-links a {
  display: block; color: rgba(255,255,255,0.6); font-size: 0.9rem;
  padding: 4px 0; transition: var(--tx-transition);
}
.tx-footer-links a:hover { color: var(--tx-primary); padding-left: 4px; }
.tx-footer-social { display: flex; gap: 10px; margin-top: 12px; }
.tx-footer-social a {
  width: 36px; height: 36px; border-radius: 50%;
  background: rgba(255,255,255,0.08); display: flex;
  align-items: center; justify-content: center;
  color: rgba(255,255,255,0.7); font-size: 0.9rem;
  transition: var(--tx-transition);
}
.tx-footer-social a:hover { background: var(--tx-primary); color: var(--tx-white); }
.tx-footer-bottom {
  padding: 20px 0; text-align: center; font-size: 0.85rem;
}
.tx-footer-bottom a { color: rgba(255,255,255,0.5); }
.tx-footer-bottom a:hover { color: var(--tx-primary); }

/* ========== Breadcrumb ========== */
.tx-breadcrumb {
  padding: 14px 0; font-size: 0.85rem; color: var(--tx-text-sub);
  border-bottom: 1px solid var(--tx-border);
}
.tx-breadcrumb a { color: var(--tx-text-sub); }
.tx-breadcrumb a:hover { color: var(--tx-primary); }
.tx-breadcrumb span { margin: 0 8px; }

/* ========== Share Buttons ========== */
.tx-share { display: flex; gap: 10px; align-items: center; }
.tx-share-label { font-size: 0.9rem; font-weight: 600; margin-right: 4px; }
.tx-share a {
  width: 36px; height: 36px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.85rem; color: var(--tx-white); transition: var(--tx-transition);
}
.tx-share a:hover { transform: translateY(-2px); }
.tx-share .wechat { background: #07C160; }
.tx-share .weibo { background: #E6162D; }
.tx-share .douyin { background: #161823; }
.tx-share .bilibili { background: #00A1D6; }

/* ========== Animations ========== */
.tx-fade-in {
  opacity: 0; transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.tx-fade-in.visible { opacity: 1; transform: translateY(0); }

/* ========== How-To Guide ========== */
.tx-howto-steps {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
  counter-reset: step;
}
.tx-howto-step {
  text-align: center; padding: 24px 16px; position: relative;
  counter-increment: step;
}
.tx-howto-step::before {
  content: counter(step); display: flex; width: 48px; height: 48px;
  border-radius: 50%; background: var(--tx-gradient);
  color: var(--tx-white); font-weight: 800; font-size: 1.2rem;
  align-items: center; justify-content: center;
  margin: 0 auto 16px;
}
.tx-howto-step h4 { font-size: 1rem; margin-bottom: 8px; }
.tx-howto-step p { font-size: 0.88rem; color: var(--tx-text-sub); }

/* ========== AI Feature Section ========== */
.tx-ai-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
}
.tx-ai-card {
  border-radius: var(--tx-radius-lg); overflow: hidden;
  background: var(--tx-white); box-shadow: var(--tx-shadow);
  transition: var(--tx-transition);
}
.tx-ai-card:hover { transform: translateY(-4px); box-shadow: var(--tx-shadow-hover); }
.tx-ai-card-img { height: 200px; overflow: hidden; }
.tx-ai-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.tx-ai-card:hover .tx-ai-card-img img { transform: scale(1.05); }
.tx-ai-card-body { padding: 20px; }
.tx-ai-card-body h4 { font-size: 1.05rem; margin-bottom: 8px; }
.tx-ai-card-body p { font-size: 0.9rem; color: var(--tx-text-sub); line-height: 1.7; }

/* ========== Community Section ========== */
.tx-community-features {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px;
}
.tx-community-card {
  display: flex; gap: 20px; padding: 24px;
  background: rgba(255,255,255,0.06); border-radius: var(--tx-radius-lg);
  border: 1px solid rgba(255,255,255,0.08);
  transition: var(--tx-transition);
}
.tx-community-card:hover {
  background: rgba(232,69,107,0.08); border-color: rgba(232,69,107,0.2);
}
.tx-community-card-icon {
  width: 52px; height: 52px; border-radius: 14px;
  background: var(--tx-gradient); display: flex;
  align-items: center; justify-content: center;
  font-size: 1.4rem; flex-shrink: 0;
}
.tx-community-card h4 { color: var(--tx-white); font-size: 1.05rem; margin-bottom: 6px; }
.tx-community-card p { font-size: 0.88rem; color: rgba(255,255,255,0.6); line-height: 1.6; }

/* ========== Inner Page Styles ========== */
.tx-page-hero {
  background: var(--tx-dark); padding: 120px 0 60px;
  text-align: center; position: relative; overflow: hidden;
}
.tx-page-hero::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(ellipse at center, rgba(232,69,107,0.15) 0%, transparent 70%);
}
.tx-page-hero h1 { color: var(--tx-white); font-size: 2.2rem; margin-bottom: 12px; position: relative; }
.tx-page-hero p { color: rgba(255,255,255,0.7); font-size: 1.05rem; position: relative; }
.tx-page-content { padding: 48px 0; }

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .tx-video-grid { grid-template-columns: repeat(3, 1fr); }
  .tx-expert-grid { grid-template-columns: repeat(2, 1fr); }
  .tx-footer-inner { grid-template-columns: 1fr 1fr; gap: 28px; }
  .tx-howto-steps { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .tx-nav { display: none; }
  .tx-menu-toggle { display: block; }
  .tx-nav.open {
    display: flex; flex-direction: column; position: absolute;
    top: 68px; left: 0; right: 0; background: var(--tx-dark);
    padding: 16px; gap: 4px; border-bottom: 1px solid rgba(232,69,107,0.15);
  }
  .tx-hero { height: 420px; }
  .tx-hero-content h1 { font-size: 1.8rem; }
  .tx-video-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .tx-service-grid { grid-template-columns: 1fr; }
  .tx-ai-grid { grid-template-columns: 1fr; }
  .tx-community-features { grid-template-columns: 1fr; }
  .tx-review-grid { grid-template-columns: 1fr; }
  .tx-contact-grid { grid-template-columns: 1fr; }
  .tx-footer-inner { grid-template-columns: 1fr; gap: 24px; }
  .tx-section { padding: 48px 0; }
  .tx-section-header h2 { font-size: 1.6rem; }
  .tx-howto-steps { grid-template-columns: 1fr 1fr; }
  .tx-expert-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .tx-video-grid { grid-template-columns: 1fr; }
  .tx-howto-steps { grid-template-columns: 1fr; }
  .tx-hero { height: 360px; }
  .tx-hero-content h1 { font-size: 1.5rem; }
  .tx-contact-qr { flex-direction: column; align-items: center; }
}

/* ========== Lazy Load ========== */
img[data-src] { opacity: 0; transition: opacity 0.4s ease; }
img[data-src].loaded { opacity: 1; }

/* ========== Video Tags ========== */
.tx-video-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.tx-video-tag {
  padding: 2px 10px; border-radius: 50px; font-size: 0.72rem;
  background: var(--tx-light-bg); color: var(--tx-primary); font-weight: 500;
}

/* ========== Stats Bar ========== */
.tx-stats {
  background: var(--tx-gradient); padding: 36px 0;
}
.tx-stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
  text-align: center;
}
.tx-stat-item h3 { font-size: 2.2rem; color: var(--tx-white); font-weight: 800; }
.tx-stat-item p { font-size: 0.9rem; color: rgba(255,255,255,0.85); margin-top: 4px; }

@media (max-width: 768px) {
  .tx-stats-grid { grid-template-columns: repeat(2, 1fr); }
}