/* ============================================
   91 原创样式表
   配色：深紫黑 + 亮紫 + 玫红渐变
   风格：游戏解说视频社区
   ============================================ */

/* === 基础重置与变量 === */
:root {
  --tx-deep: #1a0a2e;
  --tx-dark: #120820;
  --tx-card: #231447;
  --tx-purple: #7b2ff7;
  --tx-pink: #f72585;
  --tx-gradient: linear-gradient(135deg, #7b2ff7, #f72585);
  --tx-text: #f0e6ff;
  --tx-gray: #a89cc8;
  --tx-border: #3d1f7a;
  --tx-radius: 10px;
  --tx-shadow: 0 4px 20px rgba(123,47,247,0.15);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--tx-dark);
  color: var(--tx-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--tx-purple); text-decoration: none; transition: color 0.3s; }
a:hover { color: var(--tx-pink); }

img { max-width: 100%; height: auto; display: block; }

.tx-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
}

/* === 头部导航 === */
.tx-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(18, 8, 32, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--tx-border);
  padding: 0 0;
}

.tx-header .tx-container {
  display: flex;
  align-items: center;
  height: 68px;
  gap: 20px;
}

.tx-logo img { height: 42px; width: auto; }

.tx-nav { flex: 1; }

.tx-nav-list {
  list-style: none;
  display: flex;
  gap: 6px;
}

.tx-nav-list a {
  display: block;
  padding: 8px 16px;
  color: var(--tx-gray);
  font-size: 15px;
  border-radius: 6px;
  transition: all 0.3s;
  white-space: nowrap;
}

.tx-nav-list a:hover,
.tx-nav-list a.tx-nav-active {
  color: #fff;
  background: rgba(123, 47, 247, 0.2);
}

.tx-nav-list a.tx-nav-active {
  background: var(--tx-gradient);
  font-weight: 600;
}

/* 搜索框 */
.tx-search-box {
  display: flex;
  align-items: center;
  background: rgba(61, 31, 122, 0.4);
  border: 1px solid var(--tx-border);
  border-radius: 20px;
  overflow: hidden;
  width: 220px;
}

.tx-search-input {
  background: transparent;
  border: none;
  color: var(--tx-text);
  padding: 7px 14px;
  font-size: 13px;
  outline: none;
  width: 100%;
}

.tx-search-input::placeholder { color: var(--tx-gray); opacity: 0.7; }

.tx-search-btn {
  background: transparent;
  border: none;
  color: var(--tx-gray);
  padding: 7px 12px;
  cursor: pointer;
  font-size: 14px;
}

.tx-mobile-menu {
  display: none;
  background: transparent;
  border: 1px solid var(--tx-border);
  color: var(--tx-text);
  font-size: 22px;
  padding: 6px 10px;
  border-radius: 6px;
  cursor: pointer;
}

/* === Banner区域 === */
.tx-banner {
  position: relative;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 20px 80px;
  overflow: hidden;
}

.tx-banner-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  z-index: 0;
}

.tx-banner-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(18,8,32,0.3) 0%, rgba(18,8,32,0.85) 100%);
}

.tx-banner-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
}

.tx-banner-content h1 {
  font-size: 42px;
  font-weight: 800;
  margin-bottom: 18px;
  background: var(--tx-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.3;
}

.tx-banner-subtitle {
  font-size: 16px;
  color: var(--tx-gray);
  line-height: 1.8;
  margin-bottom: 30px;
}

.tx-banner-stats {
  display: flex;
  justify-content: center;
  gap: 50px;
  margin-bottom: 35px;
}

.tx-stat-item { text-align: center; }

.tx-stat-num {
  display: block;
  font-size: 32px;
  font-weight: 800;
  color: #fff;
  background: var(--tx-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tx-stat-label {
  font-size: 13px;
  color: var(--tx-gray);
  margin-top: 4px;
  display: block;
}

/* 按钮 */
.tx-btn-primary, .tx-btn-outline {
  display: inline-block;
  padding: 12px 32px;
  border-radius: 25px;
  font-size: 15px;
  font-weight: 600;
  margin: 0 8px;
  transition: all 0.3s;
  cursor: pointer;
}

.tx-btn-primary {
  background: var(--tx-gradient);
  color: #fff;
  border: none;
}

.tx-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(123, 47, 247, 0.4);
  color: #fff;
}

.tx-btn-outline {
  background: transparent;
  color: var(--tx-text);
  border: 2px solid var(--tx-purple);
}

.tx-btn-outline:hover {
  background: rgba(123, 47, 247, 0.15);
  color: #fff;
}

/* === 通用Section === */
.tx-section {
  padding: 70px 0;
  position: relative;
}

.tx-section:nth-child(even) { background: rgba(35, 20, 71, 0.3); }

.tx-section-header {
  text-align: center;
  margin-bottom: 45px;
}

.tx-section-header h2 {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 12px;
  background: var(--tx-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tx-section-header p {
  color: var(--tx-gray);
  font-size: 15px;
  max-width: 700px;
  margin: 0 auto;
}

/* === 视频卡片网格 === */
.tx-video-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.tx-video-card {
  background: var(--tx-card);
  border-radius: var(--tx-radius);
  overflow: hidden;
  border: 1px solid var(--tx-border);
  transition: all 0.35s;
}

.tx-video-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--tx-shadow);
  border-color: var(--tx-purple);
}

.tx-video-thumb {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
}

.tx-video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}

.tx-video-card:hover .tx-video-thumb img { transform: scale(1.05); }

.tx-play-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.35);
  opacity: 0;
  transition: opacity 0.3s;
}

.tx-video-card:hover .tx-play-overlay,
.tx-ent-card:hover .tx-play-overlay { opacity: 1; }

.tx-play-btn {
  width: 56px;
  height: 56px;
  background: var(--tx-gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: #fff;
  box-shadow: 0 4px 15px rgba(247, 37, 133, 0.4);
  transition: transform 0.3s;
}

.tx-video-card:hover .tx-play-btn { transform: scale(1.1); }

.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: 12px;
  font-weight: 500;
}

.tx-video-tag {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--tx-gradient);
  color: #fff;
  padding: 3px 10px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
}

.tx-tag-hot { background: linear-gradient(135deg, #ff6b35, #f72585); }

.tx-video-info {
  padding: 16px;
}

.tx-video-info h3, .tx-video-info h2 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.tx-video-info h2 { font-size: 16px; }

.tx-video-meta {
  font-size: 13px;
  color: var(--tx-gray);
}

/* === 娱乐专区 === */
.tx-ent-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.tx-ent-card {
  background: var(--tx-card);
  border-radius: var(--tx-radius);
  overflow: hidden;
  border: 1px solid var(--tx-border);
  transition: all 0.35s;
}

.tx-ent-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--tx-shadow);
}

.tx-ent-card.tx-ent-large { grid-column: span 2; }

.tx-ent-card.tx-ent-large .tx-video-thumb { max-height: 350px; }

.tx-ent-info {
  padding: 18px;
}

.tx-ent-info h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
}

.tx-ent-info p {
  font-size: 14px;
  color: var(--tx-gray);
  margin-bottom: 8px;
}

.tx-meta {
  font-size: 13px;
  color: var(--tx-gray);
  opacity: 0.8;
}

/* === AI赋能 === */
.tx-ai-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.tx-ai-image {
  border-radius: var(--tx-radius);
  overflow: hidden;
  border: 1px solid var(--tx-border);
}

.tx-ai-features {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.tx-ai-item {
  display: flex;
  gap: 16px;
  padding: 18px;
  background: var(--tx-card);
  border-radius: var(--tx-radius);
  border: 1px solid var(--tx-border);
  transition: all 0.3s;
}

.tx-ai-item:hover {
  border-color: var(--tx-purple);
  transform: translateX(5px);
}

.tx-ai-icon {
  font-size: 28px;
  flex-shrink: 0;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(123, 47, 247, 0.15);
  border-radius: 10px;
}

.tx-ai-text h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

.tx-ai-text p {
  font-size: 14px;
  color: var(--tx-gray);
  line-height: 1.6;
}

/* === 社区模块 === */
.tx-community {
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

.tx-community::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(18, 8, 32, 0.88);
}

.tx-community .tx-container { position: relative; z-index: 1; }

.tx-community-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.tx-comm-card {
  background: rgba(35, 20, 71, 0.8);
  backdrop-filter: blur(8px);
  border: 1px solid var(--tx-border);
  border-radius: var(--tx-radius);
  padding: 28px;
  text-align: center;
  transition: all 0.35s;
}

.tx-comm-card:hover {
  transform: translateY(-5px);
  border-color: var(--tx-purple);
  box-shadow: 0 8px 30px rgba(123, 47, 247, 0.2);
}

.tx-comm-icon {
  font-size: 42px;
  margin-bottom: 14px;
}

.tx-comm-card h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 10px;
}

.tx-comm-card p {
  font-size: 14px;
  color: var(--tx-gray);
  line-height: 1.6;
  margin-bottom: 10px;
}

.tx-comm-count {
  font-size: 12px;
  color: var(--tx-pink);
  font-weight: 500;
}

.tx-comm-topics {
  margin-top: 12px;
  font-size: 13px;
}

.tx-comm-topics span { color: var(--tx-gray); margin-right: 6px; }
.tx-comm-topics a {
  color: var(--tx-purple);
  margin-right: 8px;
  font-size: 12px;
}

/* === 专家展示 === */
.tx-expert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.tx-expert-card {
  background: var(--tx-card);
  border: 1px solid var(--tx-border);
  border-radius: var(--tx-radius);
  padding: 28px 20px;
  text-align: center;
  transition: all 0.35s;
}

.tx-expert-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--tx-shadow);
  border-color: var(--tx-purple);
}

.tx-expert-avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  margin: 0 auto 16px;
  border: 3px solid var(--tx-purple);
  object-fit: cover;
}

.tx-expert-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 6px;
}

.tx-expert-card h4 {
  font-size: 13px;
  color: var(--tx-pink);
  font-weight: 500;
  margin-bottom: 12px;
}

.tx-expert-card p {
  font-size: 13px;
  color: var(--tx-gray);
  line-height: 1.6;
  margin-bottom: 12px;
}

.tx-expert-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px;
  margin-bottom: 16px;
}

.tx-expert-tags span {
  background: rgba(123, 47, 247, 0.15);
  color: var(--tx-purple);
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 11px;
}

.tx-expert-actions {
  display: flex;
  gap: 8px;
  justify-content: center;
}

.tx-btn-sm {
  display: inline-block;
  padding: 6px 16px;
  font-size: 13px;
  border-radius: 16px;
  background: var(--tx-gradient);
  color: #fff;
  border: none;
  cursor: pointer;
  transition: all 0.3s;
}

.tx-btn-sm:hover { transform: translateY(-1px); color: #fff; }

.tx-btn-ghost {
  background: transparent;
  border: 1px solid var(--tx-purple);
  color: var(--tx-purple);
}

.tx-btn-ghost:hover { background: rgba(123, 47, 247, 0.15); color: var(--tx-purple); }

/* === 合作品牌 === */
.tx-partner-wall {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 24px;
}

.tx-partner-item {
  background: var(--tx-card);
  border: 1px solid var(--tx-border);
  border-radius: 8px;
  padding: 10px;
  transition: all 0.3s;
}

.tx-partner-item:hover {
  border-color: var(--tx-purple);
  transform: scale(1.05);
}

/* === How-To步骤 === */
.tx-howto-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.tx-step {
  background: var(--tx-card);
  border: 1px solid var(--tx-border);
  border-radius: var(--tx-radius);
  padding: 30px 22px;
  text-align: center;
  position: relative;
  transition: all 0.35s;
}

.tx-step:hover {
  border-color: var(--tx-purple);
  transform: translateY(-4px);
}

.tx-step-num {
  font-size: 42px;
  font-weight: 800;
  background: var(--tx-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 14px;
}

.tx-step h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 10px;
}

.tx-step p {
  font-size: 14px;
  color: var(--tx-gray);
  line-height: 1.6;
}

/* === FAQ === */
.tx-faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.tx-faq-item {
  background: var(--tx-card);
  border: 1px solid var(--tx-border);
  border-radius: var(--tx-radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color 0.3s;
}

.tx-faq-item:hover { border-color: var(--tx-purple); }

.tx-faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 22px;
  cursor: pointer;
  transition: background 0.3s;
}

.tx-faq-question:hover { background: rgba(123, 47, 247, 0.08); }

.tx-faq-question h3 {
  font-size: 15px;
  font-weight: 600;
}

.tx-faq-toggle {
  font-size: 22px;
  color: var(--tx-purple);
  font-weight: 300;
  transition: transform 0.3s;
  flex-shrink: 0;
  margin-left: 12px;
}

.tx-faq-item.active .tx-faq-toggle { transform: rotate(45deg); }

.tx-faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}

.tx-faq-item.active .tx-faq-answer {
  max-height: 300px;
  padding: 0 22px 18px;
}

.tx-faq-answer p {
  font-size: 14px;
  color: var(--tx-gray);
  line-height: 1.7;
}

/* === 用户评论 === */
.tx-review-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.tx-review-card {
  background: var(--tx-card);
  border: 1px solid var(--tx-border);
  border-radius: var(--tx-radius);
  padding: 24px;
  transition: all 0.35s;
}

.tx-review-card:hover {
  border-color: var(--tx-purple);
  transform: translateY(-3px);
}

.tx-review-stars {
  color: #ffd700;
  font-size: 16px;
  margin-bottom: 12px;
  letter-spacing: 2px;
}

.tx-review-text {
  font-size: 14px;
  color: var(--tx-text);
  line-height: 1.7;
  margin-bottom: 14px;
  font-style: italic;
}

.tx-review-author {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
}

.tx-review-name { color: var(--tx-purple); font-weight: 600; }
.tx-review-date { color: var(--tx-gray); }

/* === 社交分享 === */
.tx-share-buttons {
  display: flex;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
}

.tx-share-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: var(--tx-card);
  border: 1px solid var(--tx-border);
  border-radius: 25px;
  color: var(--tx-text);
  font-size: 14px;
  transition: all 0.3s;
}

.tx-share-btn:hover {
  border-color: var(--tx-purple);
  background: rgba(123, 47, 247, 0.15);
  transform: translateY(-2px);
  color: #fff;
}

.tx-share-icon { font-size: 18px; }

/* === 联系我们 === */
.tx-contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.tx-contact-info {
  background: var(--tx-card);
  border: 1px solid var(--tx-border);
  border-radius: var(--tx-radius);
  padding: 32px;
}

.tx-contact-info h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 20px;
  background: var(--tx-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tx-contact-item {
  margin-bottom: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(61, 31, 122, 0.3);
}

.tx-contact-item:last-child { border-bottom: none; margin-bottom: 0; }

.tx-contact-item h5 {
  font-size: 13px;
  color: var(--tx-gray);
  font-weight: 500;
  margin-bottom: 4px;
}

.tx-contact-item p {
  font-size: 15px;
  color: var(--tx-text);
}

.tx-contact-qrcodes {
  display: flex;
  gap: 24px;
  justify-content: center;
}

.tx-qrcode-item {
  text-align: center;
  background: var(--tx-card);
  border: 1px solid var(--tx-border);
  border-radius: var(--tx-radius);
  padding: 20px;
}

.tx-qrcode-item img {
  margin: 0 auto 10px;
  border-radius: 8px;
}

.tx-qrcode-item p {
  font-size: 13px;
  color: var(--tx-gray);
}

/* === 页脚 === */
.tx-footer {
  background: var(--tx-deep);
  border-top: 1px solid var(--tx-border);
  padding: 50px 0 0;
}

.tx-footer-top {
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 40px;
  padding-bottom: 35px;
  border-bottom: 1px solid rgba(61, 31, 122, 0.3);
}

.tx-footer-brand img { margin-bottom: 14px; }

.tx-footer-brand p {
  font-size: 14px;
  color: var(--tx-gray);
  line-height: 1.7;
}

.tx-footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.tx-footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 14px;
  color: var(--tx-text);
}

.tx-footer-col ul { list-style: none; }

.tx-footer-col li {
  margin-bottom: 8px;
  font-size: 14px;
  color: var(--tx-gray);
}

.tx-footer-col a {
  color: var(--tx-gray);
  transition: color 0.3s;
}

.tx-footer-col a:hover { color: var(--tx-purple); }

.tx-footer-bottom {
  padding: 20px 0;
  text-align: center;
}

.tx-footer-bottom p {
  font-size: 13px;
  color: var(--tx-gray);
  opacity: 0.8;
}

/* === 内页Banner === */
.tx-page-banner {
  background: linear-gradient(135deg, var(--tx-deep), #2a1052);
  padding: 100px 0 40px;
  border-bottom: 1px solid var(--tx-border);
  background-size: cover;
  background-position: center;
  position: relative;
}

.tx-page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(18, 8, 32, 0.7);
}

.tx-page-banner .tx-container { position: relative; z-index: 1; }

.tx-breadcrumb {
  font-size: 14px;
  margin-bottom: 16px;
}

.tx-breadcrumb a { color: var(--tx-gray); }
.tx-breadcrumb a:hover { color: var(--tx-purple); }
.tx-breadcrumb span { color: var(--tx-gray); margin: 0 6px; }

.tx-page-banner h1 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 10px;
  background: var(--tx-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tx-page-banner p {
  font-size: 15px;
  color: var(--tx-gray);
}

/* === 筛选栏 === */
.tx-filter-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}

.tx-filter-label {
  font-size: 14px;
  color: var(--tx-gray);
  font-weight: 500;
}

.tx-filter-tag {
  padding: 6px 16px;
  border-radius: 16px;
  font-size: 13px;
  color: var(--tx-gray);
  background: var(--tx-card);
  border: 1px solid var(--tx-border);
  transition: all 0.3s;
}

.tx-filter-tag:hover, .tx-filter-tag.tx-filter-active {
  background: var(--tx-gradient);
  color: #fff;
  border-color: transparent;
}

/* === 内容块 === */
.tx-content-block {
  margin-top: 50px;
  padding: 30px;
  background: var(--tx-card);
  border: 1px solid var(--tx-border);
  border-radius: var(--tx-radius);
}

.tx-content-block h2 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--tx-text);
}

.tx-content-block h3 {
  font-size: 18px;
  font-weight: 600;
  margin: 18px 0 10px;
  color: var(--tx-text);
}

.tx-content-block p {
  font-size: 15px;
  color: var(--tx-gray);
  line-height: 1.8;
  margin-bottom: 10px;
}

/* === 关于页面 === */
.tx-about-content { max-width: 900px; margin: 0 auto; }

.tx-about-block {
  margin-bottom: 50px;
}

.tx-about-block h2 {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 18px;
  background: var(--tx-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tx-about-block p {
  font-size: 15px;
  color: var(--tx-gray);
  line-height: 1.8;
  margin-bottom: 12px;
}

/* 时间线 */
.tx-timeline { position: relative; padding-left: 30px; }

.tx-timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--tx-gradient);
  border-radius: 2px;
}

.tx-timeline-item {
  position: relative;
  padding: 0 0 30px 30px;
}

.tx-timeline-item::before {
  content: '';
  position: absolute;
  left: -36px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--tx-gradient);
  border: 3px solid var(--tx-dark);
}

.tx-timeline-year {
  font-size: 20px;
  font-weight: 800;
  color: var(--tx-pink);
  margin-bottom: 6px;
}

.tx-timeline-content h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

.tx-timeline-content p {
  font-size: 14px;
  color: var(--tx-gray);
}

/* 服务网格 */
.tx-service-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.tx-service-item {
  background: var(--tx-card);
  border: 1px solid var(--tx-border);
  border-radius: var(--tx-radius);
  padding: 24px;
  transition: all 0.3s;
}

.tx-service-item:hover {
  border-color: var(--tx-purple);
  transform: translateY(-3px);
}

.tx-service-item h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.tx-service-item p {
  font-size: 14px;
  color: var(--tx-gray);
}

.tx-contact-simple p {
  font-size: 15px;
  color: var(--tx-gray);
  margin-bottom: 8px;
}

.tx-contact-simple strong { color: var(--tx-text); }

/* === 懒加载占位 === */
.tx-lazy {
  opacity: 0;
  transition: opacity 0.5s;
}

.tx-lazy.tx-loaded { opacity: 1; }

/* === MCP Widget === */
.tx-mcp-widget {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 999;
}

.tx-mcp-container {
  background: var(--tx-card);
  border: 1px solid var(--tx-border);
  border-radius: var(--tx-radius);
  width: 260px;
  overflow: hidden;
  box-shadow: 0 8px 30px rgba(0,0,0,0.3);
}

.tx-mcp-header {
  background: var(--tx-gradient);
  color: #fff;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 600;
}

.tx-mcp-body { padding: 14px 16px; }

.tx-mcp-status { font-size: 13px; color: var(--tx-gray); margin-bottom: 10px; }
.tx-mcp-online { color: #4ade80; font-weight: 600; }

.tx-mcp-actions { display: flex; gap: 6px; flex-wrap: wrap; }

.tx-mcp-btn {
  padding: 5px 12px;
  font-size: 12px;
  background: rgba(123, 47, 247, 0.15);
  color: var(--tx-purple);
  border: 1px solid var(--tx-border);
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.3s;
}

.tx-mcp-btn:hover { background: var(--tx-purple); color: #fff; }

/* === 响应式 === */
@media (max-width: 1024px) {
  .tx-video-grid { grid-template-columns: repeat(2, 1fr); }
  .tx-expert-grid { grid-template-columns: repeat(2, 1fr); }
  .tx-howto-steps { grid-template-columns: repeat(2, 1fr); }
  .tx-community-grid { grid-template-columns: repeat(2, 1fr); }
  .tx-ai-showcase { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .tx-nav { display: none; }
  .tx-mobile-menu { display: block; }
  .tx-search-box { width: 160px; }

  .tx-nav.tx-nav-open {
    display: block;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: rgba(18, 8, 32, 0.98);
    border-bottom: 1px solid var(--tx-border);
    padding: 10px 20px;
  }

  .tx-nav.tx-nav-open .tx-nav-list {
    flex-direction: column;
    gap: 4px;
  }

  .tx-banner { min-height: 500px; padding: 100px 20px 60px; }
  .tx-banner-content h1 { font-size: 28px; }
  .tx-banner-stats { gap: 25px; }
  .tx-stat-num { font-size: 24px; }

  .tx-video-grid { grid-template-columns: 1fr; }
  .tx-ent-grid { grid-template-columns: 1fr; }
  .tx-ent-card.tx-ent-large { grid-column: span 1; }
  .tx-expert-grid { grid-template-columns: 1fr; }
  .tx-howto-steps { grid-template-columns: 1fr; }
  .tx-community-grid { grid-template-columns: 1fr; }
  .tx-review-grid { grid-template-columns: 1fr; }
  .tx-contact-grid { grid-template-columns: 1fr; }
  .tx-contact-qrcodes { flex-direction: column; align-items: center; }
  .tx-footer-top { grid-template-columns: 1fr; }
  .tx-footer-links { grid-template-columns: 1fr; }
  .tx-service-grid { grid-template-columns: 1fr; }

  .tx-section { padding: 45px 0; }
  .tx-section-header h2 { font-size: 24px; }
  .tx-page-banner h1 { font-size: 24px; }
}

@media (max-width: 480px) {
  .tx-banner-content h1 { font-size: 24px; }
  .tx-banner-stats { flex-direction: column; gap: 15px; }
  .tx-btn-primary, .tx-btn-outline { display: block; margin: 8px auto; }
  .tx-search-box { width: 120px; }
  .tx-share-buttons { gap: 10px; }
  .tx-share-btn { padding: 10px 16px; font-size: 13px; }
}