/* ============================================
   萝莉岛 - 原创CSS样式表
   品牌：萝莉岛 | 域名：730520.cn
   配色：深邃夜蓝 + 赛车红 + 荧光绿
   ============================================ */

/* CSS变量定义 */
:root {
  --kkt-primary: #1A1A2E;
  --kkt-secondary: #E94560;
  --kkt-accent: #0F3460;
  --kkt-neon: #16C79A;
  --kkt-bg: #F8F9FA;
  --kkt-text: #2D2D2D;
  --kkt-white: #FFFFFF;
  --kkt-dark: #0D0D1A;
  --kkt-gray: #6C757D;
  --kkt-light-gray: #E9ECEF;
  --kkt-gradient: linear-gradient(135deg, #1A1A2E 0%, #0F3460 50%, #1A1A2E 100%);
  --kkt-gradient-red: linear-gradient(135deg, #E94560 0%, #C73651 100%);
  --kkt-shadow: 0 4px 20px rgba(26, 26, 46, 0.15);
  --kkt-shadow-hover: 0 8px 32px rgba(233, 69, 96, 0.25);
  --kkt-radius: 12px;
  --kkt-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 全局重置 */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--kkt-text);
  background-color: var(--kkt-bg);
  line-height: 1.7;
  overflow-x: hidden;
}

a {
  color: var(--kkt-secondary);
  text-decoration: none;
  transition: var(--kkt-transition);
}

a:hover {
  color: var(--kkt-neon);
}

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

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--kkt-primary);
}

/* ============================================
   顶部导航栏
   ============================================ */
.kkt-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(26, 26, 46, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 2px solid var(--kkt-secondary);
  transition: var(--kkt-transition);
}

.kkt-header.scrolled {
  background: rgba(13, 13, 26, 0.98);
  box-shadow: 0 2px 20px rgba(233, 69, 96, 0.3);
}

.kkt-nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.kkt-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.kkt-logo img {
  height: 45px;
  width: auto;
}

.kkt-logo-text {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--kkt-white);
  letter-spacing: 2px;
}

.kkt-logo-text span {
  color: var(--kkt-secondary);
}

.kkt-nav-menu {
  display: flex;
  list-style: none;
  gap: 8px;
}

.kkt-nav-menu li a {
  color: var(--kkt-white);
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--kkt-transition);
  position: relative;
}

.kkt-nav-menu li a:hover,
.kkt-nav-menu li a.active {
  color: var(--kkt-neon);
  background: rgba(22, 199, 154, 0.1);
}

.kkt-nav-menu li a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--kkt-neon);
  transition: var(--kkt-transition);
}

.kkt-nav-menu li a:hover::after,
.kkt-nav-menu li a.active::after {
  width: 60%;
}

.kkt-mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
}

.kkt-mobile-toggle span {
  width: 28px;
  height: 3px;
  background: var(--kkt-white);
  border-radius: 2px;
  transition: var(--kkt-transition);
}

/* ============================================
   搜索栏
   ============================================ */
.kkt-search-bar {
  background: var(--kkt-primary);
  padding: 12px 0;
  margin-top: 70px;
}

.kkt-search-container {
  max-width: 700px;
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
}

.kkt-search-container input {
  width: 100%;
  padding: 12px 50px 12px 20px;
  border: 2px solid var(--kkt-accent);
  border-radius: 30px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--kkt-white);
  font-size: 0.95rem;
  outline: none;
  transition: var(--kkt-transition);
}

.kkt-search-container input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

.kkt-search-container input:focus {
  border-color: var(--kkt-neon);
  background: rgba(255, 255, 255, 0.12);
}

.kkt-search-btn {
  position: absolute;
  right: 28px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--kkt-secondary);
  border: none;
  color: var(--kkt-white);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--kkt-transition);
}

.kkt-search-btn:hover {
  background: var(--kkt-neon);
}

/* ============================================
   面包屑导航
   ============================================ */
.kkt-breadcrumb {
  max-width: 1400px;
  margin: 0 auto;
  padding: 15px 20px;
  font-size: 0.85rem;
  color: var(--kkt-gray);
}

.kkt-breadcrumb a {
  color: var(--kkt-accent);
}

.kkt-breadcrumb span {
  margin: 0 6px;
  color: var(--kkt-gray);
}

/* ============================================
   Hero Banner
   ============================================ */
.kkt-hero {
  position: relative;
  height: 75vh;
  min-height: 500px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.kkt-hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.4);
}

.kkt-hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, rgba(26,26,46,0.6) 0%, rgba(15,52,96,0.4) 50%, rgba(26,26,46,0.8) 100%);
}

.kkt-hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  padding: 0 20px;
}

.kkt-hero-content h1 {
  font-size: 3rem;
  color: var(--kkt-white);
  margin-bottom: 16px;
  text-shadow: 0 2px 10px rgba(0,0,0,0.5);
}

.kkt-hero-content h1 span {
  color: var(--kkt-secondary);
}

.kkt-hero-content p {
  font-size: 1.2rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 30px;
  line-height: 1.8;
}

.kkt-hero-tags {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 30px;
}

.kkt-hero-tags span {
  background: rgba(233, 69, 96, 0.2);
  border: 1px solid var(--kkt-secondary);
  color: var(--kkt-white);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
}

.kkt-btn {
  display: inline-block;
  padding: 14px 36px;
  border-radius: 30px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--kkt-transition);
  border: none;
  text-align: center;
}

.kkt-btn-primary {
  background: var(--kkt-gradient-red);
  color: var(--kkt-white);
  box-shadow: 0 4px 15px rgba(233, 69, 96, 0.4);
}

.kkt-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(233, 69, 96, 0.5);
  color: var(--kkt-white);
}

.kkt-btn-outline {
  background: transparent;
  color: var(--kkt-white);
  border: 2px solid var(--kkt-neon);
}

.kkt-btn-outline:hover {
  background: var(--kkt-neon);
  color: var(--kkt-dark);
}

.kkt-hero-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
}

/* ============================================
   通用区块样式
   ============================================ */
.kkt-section {
  padding: 80px 0;
}

.kkt-section-dark {
  background: var(--kkt-primary);
  color: var(--kkt-white);
}

.kkt-section-dark h2,
.kkt-section-dark h3,
.kkt-section-dark h4 {
  color: var(--kkt-white);
}

.kkt-section-alt {
  background: var(--kkt-white);
}

.kkt-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px;
}

.kkt-section-header {
  text-align: center;
  margin-bottom: 50px;
}

.kkt-section-header h2 {
  font-size: 2.2rem;
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}

.kkt-section-header h2::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--kkt-secondary);
  border-radius: 2px;
}

.kkt-section-dark .kkt-section-header h2::after {
  background: var(--kkt-neon);
}

.kkt-section-header p {
  color: var(--kkt-gray);
  font-size: 1.05rem;
  max-width: 600px;
  margin: 16px auto 0;
}

.kkt-section-dark .kkt-section-header p {
  color: rgba(255, 255, 255, 0.7);
}

/* ============================================
   视频卡片网格
   ============================================ */
.kkt-video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.kkt-video-card {
  background: var(--kkt-white);
  border-radius: var(--kkt-radius);
  overflow: hidden;
  box-shadow: var(--kkt-shadow);
  transition: var(--kkt-transition);
  position: relative;
}

.kkt-video-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--kkt-shadow-hover);
}

.kkt-video-thumb {
  position: relative;
  padding-top: 56.25%;
  overflow: hidden;
  cursor: pointer;
}

.kkt-video-thumb img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--kkt-transition);
}

.kkt-video-thumb img {
  position: absolute;
}

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

.kkt-video-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60px;
  height: 60px;
  background: rgba(233, 69, 96, 0.85);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--kkt-transition);
  z-index: 2;
}

.kkt-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: 4px;
}

.kkt-video-thumb:hover .kkt-video-play {
  opacity: 1;
}

.kkt-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;
}

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

.kkt-video-info h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.kkt-video-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.82rem;
  color: var(--kkt-gray);
}

.kkt-video-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.kkt-video-tags {
  display: flex;
  gap: 6px;
  margin-top: 10px;
  flex-wrap: wrap;
}

.kkt-video-tags span {
  background: var(--kkt-light-gray);
  color: var(--kkt-accent);
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
}

/* ============================================
   模块卡片（汽车传媒/娱乐/AI赋能等）
   ============================================ */
.kkt-module-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.kkt-module-card {
  background: var(--kkt-white);
  border-radius: var(--kkt-radius);
  padding: 30px;
  text-align: center;
  box-shadow: var(--kkt-shadow);
  transition: var(--kkt-transition);
  border: 1px solid transparent;
}

.kkt-module-card:hover {
  border-color: var(--kkt-secondary);
  transform: translateY(-4px);
  box-shadow: var(--kkt-shadow-hover);
}

.kkt-module-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  background: var(--kkt-gradient-red);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: var(--kkt-white);
}

.kkt-module-card h4 {
  font-size: 1.15rem;
  margin-bottom: 10px;
}

.kkt-module-card p {
  font-size: 0.9rem;
  color: var(--kkt-gray);
  line-height: 1.6;
}

/* 深色区块的模块卡片 */
.kkt-section-dark .kkt-module-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.kkt-section-dark .kkt-module-card:hover {
  border-color: var(--kkt-neon);
  background: rgba(22, 199, 154, 0.08);
}

.kkt-section-dark .kkt-module-card h4 {
  color: var(--kkt-white);
}

.kkt-section-dark .kkt-module-card p {
  color: rgba(255, 255, 255, 0.65);
}

.kkt-section-dark .kkt-module-icon {
  background: linear-gradient(135deg, #16C79A 0%, #0F9B6E 100%);
}

/* ============================================
   社区功能模块
   ============================================ */
.kkt-community-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}

.kkt-community-item {
  background: var(--kkt-white);
  border-radius: var(--kkt-radius);
  overflow: hidden;
  box-shadow: var(--kkt-shadow);
  transition: var(--kkt-transition);
}

.kkt-community-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--kkt-shadow-hover);
}

.kkt-community-item img {
  width: 100%;
  height: 150px;
  object-fit: cover;
}

.kkt-community-item h5 {
  padding: 12px 16px;
  font-size: 0.95rem;
  text-align: center;
}

/* ============================================
   专家展示
   ============================================ */
.kkt-expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 30px;
}

.kkt-expert-card {
  background: var(--kkt-white);
  border-radius: var(--kkt-radius);
  overflow: hidden;
  box-shadow: var(--kkt-shadow);
  transition: var(--kkt-transition);
  text-align: center;
  padding: 30px;
}

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

.kkt-expert-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 16px;
  border: 4px solid var(--kkt-secondary);
}

.kkt-expert-card h4 {
  font-size: 1.2rem;
  margin-bottom: 6px;
}

.kkt-expert-role {
  color: var(--kkt-secondary);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.kkt-expert-card p {
  font-size: 0.88rem;
  color: var(--kkt-gray);
  margin-bottom: 16px;
  line-height: 1.6;
}

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

.kkt-expert-awards span {
  background: rgba(233, 69, 96, 0.1);
  color: var(--kkt-secondary);
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 0.78rem;
}

.kkt-expert-btns {
  display: flex;
  gap: 10px;
  justify-content: center;
}

.kkt-expert-btns a {
  padding: 8px 20px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
}

.kkt-btn-sm-primary {
  background: var(--kkt-secondary);
  color: var(--kkt-white);
}

.kkt-btn-sm-primary:hover {
  background: var(--kkt-neon);
  color: var(--kkt-white);
}

.kkt-btn-sm-outline {
  border: 1px solid var(--kkt-accent);
  color: var(--kkt-accent);
}

.kkt-btn-sm-outline:hover {
  background: var(--kkt-accent);
  color: var(--kkt-white);
}

/* ============================================
   合作品牌墙
   ============================================ */
.kkt-brand-wall {
  display: flex;
  gap: 30px;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  padding: 20px 0;
}

.kkt-brand-item {
  width: 140px;
  height: 70px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.6);
  transition: var(--kkt-transition);
  letter-spacing: 1px;
}

.kkt-brand-item:hover {
  border-color: var(--kkt-neon);
  color: var(--kkt-neon);
  background: rgba(22, 199, 154, 0.08);
}

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

.kkt-faq-item {
  background: var(--kkt-white);
  border-radius: var(--kkt-radius);
  margin-bottom: 12px;
  box-shadow: var(--kkt-shadow);
  overflow: hidden;
}

.kkt-faq-question {
  padding: 18px 24px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  font-size: 1rem;
  color: var(--kkt-primary);
  transition: var(--kkt-transition);
}

.kkt-faq-question:hover {
  color: var(--kkt-secondary);
}

.kkt-faq-arrow {
  font-size: 1.2rem;
  transition: var(--kkt-transition);
  color: var(--kkt-secondary);
}

.kkt-faq-item.active .kkt-faq-arrow {
  transform: rotate(180deg);
}

.kkt-faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
  color: var(--kkt-gray);
  font-size: 0.92rem;
  line-height: 1.7;
}

.kkt-faq-item.active .kkt-faq-answer {
  padding: 0 24px 18px;
  max-height: 300px;
}

/* ============================================
   用户评论
   ============================================ */
.kkt-review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 24px;
}

.kkt-review-card {
  background: var(--kkt-white);
  border-radius: var(--kkt-radius);
  padding: 24px;
  box-shadow: var(--kkt-shadow);
  transition: var(--kkt-transition);
}

.kkt-review-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--kkt-shadow-hover);
}

.kkt-review-stars {
  color: #FFB800;
  font-size: 1rem;
  margin-bottom: 10px;
  letter-spacing: 2px;
}

.kkt-review-text {
  font-size: 0.92rem;
  color: var(--kkt-text);
  line-height: 1.7;
  margin-bottom: 14px;
  font-style: italic;
}

.kkt-review-author {
  display: flex;
  align-items: center;
  gap: 10px;
}

.kkt-review-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--kkt-gradient-red);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--kkt-white);
  font-weight: 700;
  font-size: 0.9rem;
}

.kkt-review-name {
  font-weight: 600;
  font-size: 0.9rem;
}

.kkt-review-date {
  font-size: 0.78rem;
  color: var(--kkt-gray);
}

/* ============================================
   联系我们
   ============================================ */
.kkt-contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.kkt-contact-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--kkt-radius);
  padding: 24px;
  text-align: center;
  transition: var(--kkt-transition);
}

.kkt-contact-card:hover {
  border-color: var(--kkt-neon);
  background: rgba(22, 199, 154, 0.06);
}

.kkt-contact-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.kkt-contact-card h4 {
  color: var(--kkt-white);
  margin-bottom: 8px;
  font-size: 1.05rem;
}

.kkt-contact-card p {
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.9rem;
}

/* ============================================
   How-To指南
   ============================================ */
.kkt-howto-steps {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 24px;
  counter-reset: step;
}

.kkt-howto-step {
  background: var(--kkt-white);
  border-radius: var(--kkt-radius);
  padding: 30px;
  text-align: center;
  box-shadow: var(--kkt-shadow);
  position: relative;
  counter-increment: step;
}

.kkt-howto-step::before {
  content: counter(step);
  position: absolute;
  top: -16px;
  left: 50%;
  transform: translateX(-50%);
  width: 36px;
  height: 36px;
  background: var(--kkt-secondary);
  color: var(--kkt-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
}

.kkt-howto-step h4 {
  margin-top: 10px;
  margin-bottom: 8px;
  font-size: 1.05rem;
}

.kkt-howto-step p {
  font-size: 0.88rem;
  color: var(--kkt-gray);
}

/* ============================================
   社交分享
   ============================================ */
.kkt-share-bar {
  display: flex;
  gap: 12px;
  justify-content: center;
  padding: 20px 0;
}

.kkt-share-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--kkt-white);
  font-size: 1.1rem;
  transition: var(--kkt-transition);
  cursor: pointer;
}

.kkt-share-btn:hover {
  transform: translateY(-3px);
}

.kkt-share-wechat { background: #07C160; }
.kkt-share-weibo { background: #E6162D; }
.kkt-share-douyin { background: #000; }
.kkt-share-bilibili { background: #00A1D6; }

/* ============================================
   页脚
   ============================================ */
.kkt-footer {
  background: var(--kkt-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 60px 0 0;
}

.kkt-footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px;
}

.kkt-footer-brand img {
  height: 50px;
  margin-bottom: 16px;
}

.kkt-footer-brand p {
  font-size: 0.88rem;
  line-height: 1.7;
  margin-bottom: 16px;
}

.kkt-footer h5 {
  color: var(--kkt-white);
  font-size: 1.05rem;
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 10px;
}

.kkt-footer h5::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 2px;
  background: var(--kkt-secondary);
}

.kkt-footer-links {
  list-style: none;
}

.kkt-footer-links li {
  margin-bottom: 10px;
}

.kkt-footer-links a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.88rem;
  transition: var(--kkt-transition);
}

.kkt-footer-links a:hover {
  color: var(--kkt-neon);
  padding-left: 4px;
}

.kkt-footer-qr {
  display: flex;
  gap: 16px;
}

.kkt-footer-qr img {
  width: 100px;
  height: 100px;
  border-radius: 8px;
  border: 2px solid rgba(255, 255, 255, 0.15);
}

.kkt-footer-qr-label {
  font-size: 0.78rem;
  text-align: center;
  margin-top: 6px;
  color: rgba(255, 255, 255, 0.5);
}

.kkt-footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-top: 40px;
  padding: 20px;
  text-align: center;
  font-size: 0.82rem;
}

.kkt-footer-bottom a {
  color: var(--kkt-neon);
}

/* ============================================
   内页通用
   ============================================ */
.kkt-page-hero {
  background: var(--kkt-gradient);
  padding: 120px 0 60px;
  text-align: center;
}

.kkt-page-hero h1 {
  color: var(--kkt-white);
  font-size: 2.5rem;
  margin-bottom: 12px;
}

.kkt-page-hero p {
  color: rgba(255, 255, 255, 0.75);
  font-size: 1.05rem;
}

.kkt-page-content {
  padding: 60px 0;
}

/* ============================================
   响应式设计
   ============================================ */
@media (max-width: 1024px) {
  .kkt-footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .kkt-hero-content h1 {
    font-size: 2.4rem;
  }
}

@media (max-width: 768px) {
  .kkt-nav-menu {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    width: 100%;
    background: var(--kkt-primary);
    flex-direction: column;
    padding: 20px;
    gap: 4px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
  }

  .kkt-nav-menu.active {
    display: flex;
  }

  .kkt-mobile-toggle {
    display: flex;
  }

  .kkt-hero {
    height: 60vh;
    min-height: 400px;
  }

  .kkt-hero-content h1 {
    font-size: 1.8rem;
  }

  .kkt-hero-content p {
    font-size: 1rem;
  }

  .kkt-hero-btns {
    flex-direction: column;
    align-items: center;
  }

  .kkt-section {
    padding: 50px 0;
  }

  .kkt-section-header h2 {
    font-size: 1.7rem;
  }

  .kkt-video-grid {
    grid-template-columns: 1fr;
  }

  .kkt-module-grid {
    grid-template-columns: 1fr;
  }

  .kkt-expert-grid {
    grid-template-columns: 1fr;
  }

  .kkt-review-grid {
    grid-template-columns: 1fr;
  }

  .kkt-footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .kkt-page-hero {
    padding: 100px 0 40px;
  }

  .kkt-page-hero h1 {
    font-size: 1.8rem;
  }
}

@media (max-width: 480px) {
  .kkt-hero-content h1 {
    font-size: 1.5rem;
  }

  .kkt-nav-container {
    height: 60px;
  }

  .kkt-search-bar {
    margin-top: 60px;
  }

  .kkt-video-grid {
    grid-template-columns: 1fr;
  }

  .kkt-community-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* ============================================
   懒加载占位
   ============================================ */
.kkt-lazy {
  opacity: 1;
  transition: opacity 0.5s ease;
}

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

/* ============================================
   MCP服务前端占位
   ============================================ */
.kkt-mcp-widget {
  background: rgba(255, 255, 255, 0.03);
  border: 1px dashed rgba(255, 255, 255, 0.15);
  border-radius: var(--kkt-radius);
  padding: 20px;
  text-align: center;
  color: rgba(255, 255, 255, 0.4);
  font-size: 0.85rem;
}

/* ============================================
   动画
   ============================================ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.kkt-animate {
  animation: fadeInUp 0.6s ease forwards;
}

/* 数据统计条 */
.kkt-stats-bar {
  display: flex;
  justify-content: center;
  gap: 50px;
  padding: 30px 0;
  flex-wrap: wrap;
}

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

.kkt-stat-num {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--kkt-secondary);
  display: block;
}

.kkt-section-dark .kkt-stat-num {
  color: var(--kkt-neon);
}

.kkt-stat-label {
  font-size: 0.88rem;
  color: var(--kkt-gray);
  margin-top: 4px;
}

.kkt-section-dark .kkt-stat-label {
  color: rgba(255, 255, 255, 0.6);
}

/* ============================================
   面包屑导航
   ============================================ */
.kkt-breadcrumb {
  background: var(--kkt-white);
  padding: 12px 20px;
  font-size: 0.85rem;
  color: var(--kkt-gray);
  max-width: 1400px;
  margin: 70px auto 0;
  border-bottom: 1px solid var(--kkt-light-gray);
}

.kkt-breadcrumb a {
  color: var(--kkt-accent);
  font-weight: 500;
}

.kkt-breadcrumb a:hover {
  color: var(--kkt-secondary);
}

.kkt-breadcrumb span {
  margin: 0 8px;
  color: var(--kkt-light-gray);
}

.kkt-breadcrumb strong {
  color: var(--kkt-text);
  font-weight: 600;
}

/* ============================================
   Hero 标签云
   ============================================ */
.kkt-hero-tags {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 24px;
}

.kkt-hero-tags span {
  background: rgba(255, 255, 255, 0.15);
  color: rgba(255, 255, 255, 0.9);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: var(--kkt-transition);
}

.kkt-hero-tags span:hover {
  background: var(--kkt-secondary);
  color: var(--kkt-white);
  border-color: var(--kkt-secondary);
}

/* ============================================
   内页面包屑
   ============================================ */
.kkt-page-breadcrumb {
  background: rgba(255, 255, 255, 0.05);
  padding: 12px 20px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
  max-width: 1400px;
  margin: 0 auto;
}

.kkt-page-breadcrumb a {
  color: rgba(255, 255, 255, 0.8);
}

.kkt-page-breadcrumb a:hover {
  color: var(--kkt-neon);
}

.kkt-page-breadcrumb span {
  margin: 0 8px;
}

/* ============================================
   内页文章内容区
   ============================================ */
.kkt-article-content {
  max-width: 900px;
  margin: 0 auto;
  font-size: 1rem;
  line-height: 1.9;
  color: #444;
}

.kkt-article-content h3 {
  font-size: 1.4rem;
  color: var(--kkt-primary);
  margin: 36px 0 16px;
  padding-left: 14px;
  border-left: 4px solid var(--kkt-secondary);
}

.kkt-article-content h4 {
  font-size: 1.15rem;
  color: var(--kkt-accent);
  margin: 24px 0 12px;
}

.kkt-article-content p {
  margin-bottom: 16px;
}

.kkt-article-content ul,
.kkt-article-content ol {
  margin: 12px 0 20px 24px;
}

.kkt-article-content li {
  margin-bottom: 8px;
  line-height: 1.8;
}

.kkt-article-content blockquote {
  background: var(--kkt-light-gray);
  border-left: 4px solid var(--kkt-secondary);
  padding: 16px 20px;
  margin: 20px 0;
  border-radius: 0 8px 8px 0;
  font-style: italic;
  color: var(--kkt-gray);
}

.kkt-article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 0.92rem;
}

.kkt-article-content table th,
.kkt-article-content table td {
  border: 1px solid var(--kkt-light-gray);
  padding: 12px 16px;
  text-align: left;
}

.kkt-article-content table th {
  background: var(--kkt-primary);
  color: var(--kkt-white);
  font-weight: 600;
}

.kkt-article-content table tr:nth-child(even) {
  background: rgba(0, 0, 0, 0.02);
}

/* ============================================
   内页侧边栏
   ============================================ */
.kkt-page-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px;
}

.kkt-sidebar {
  position: sticky;
  top: 90px;
  align-self: start;
}

.kkt-sidebar-widget {
  background: var(--kkt-white);
  border-radius: var(--kkt-radius);
  padding: 24px;
  box-shadow: var(--kkt-shadow);
  margin-bottom: 24px;
}

.kkt-sidebar-widget h4 {
  font-size: 1.05rem;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--kkt-secondary);
  color: var(--kkt-primary);
}

.kkt-sidebar-widget ul {
  list-style: none;
}

.kkt-sidebar-widget li {
  margin-bottom: 10px;
}

.kkt-sidebar-widget li a {
  color: var(--kkt-text);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.kkt-sidebar-widget li a:hover {
  color: var(--kkt-secondary);
  padding-left: 4px;
}

.kkt-tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.kkt-tag-cloud a {
  background: var(--kkt-light-gray);
  color: var(--kkt-accent);
  padding: 4px 12px;
  border-radius: 16px;
  font-size: 0.82rem;
  transition: var(--kkt-transition);
}

.kkt-tag-cloud a:hover {
  background: var(--kkt-secondary);
  color: var(--kkt-white);
}

@media (max-width: 1024px) {
  .kkt-page-layout {
    grid-template-columns: 1fr;
  }
  .kkt-sidebar {
    position: static;
  }
}

@media (max-width: 768px) {
  .kkt-breadcrumb {
    margin-top: 60px;
    font-size: 0.8rem;
    padding: 10px 16px;
  }
}