/* ============================================
   开元棋牌 - 古典棋道传承与名局鉴赏平台
   主样式表 kp-style.css
   CSS前缀: kp-
   设计风格: 唐宋宫廷雅韵风
   ============================================ */

/* --- CSS Variables --- */
:root {
  --kp-primary: #8C2323;
  --kp-secondary: #E6A84F;
  --kp-accent: #006442;
  --kp-highlight: #4682B4;
  --kp-bg: #FDF6E3;
  --kp-text: #333333;
  --kp-text-light: #888888;
  --kp-white: #FFFFFF;
  --kp-shadow: 0 3px 10px rgba(140, 35, 35, 0.1);
  --kp-radius: 4px;
  --kp-font-title: 'Noto Serif SC', 'SimSun', serif;
  --kp-font-body: 'Noto Serif SC', 'SimSun', serif;
  --kp-transition: all 0.3s ease;
}

/* --- Reset & Base --- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--kp-font-body);
  color: var(--kp-text);
  background-color: var(--kp-bg);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--kp-primary);
  text-decoration: none;
  transition: var(--kp-transition);
}

a:hover {
  color: var(--kp-secondary);
}

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

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--kp-font-title);
  color: var(--kp-text);
  line-height: 1.4;
  font-weight: 700;
}

/* --- Container --- */
.kp-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
}

/* --- Section Common --- */
.kp-section {
  padding: 80px 0;
}

.kp-section-title {
  text-align: center;
  margin-bottom: 50px;
}

.kp-section-title h2 {
  font-size: 2rem;
  color: var(--kp-primary);
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}

.kp-section-title h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: var(--kp-secondary);
  margin: 12px auto 0;
}

.kp-section-title p {
  color: var(--kp-text-light);
  font-size: 1rem;
  max-width: 600px;
  margin: 0 auto;
}

/* --- Navigation --- */
.kp-navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: linear-gradient(135deg, rgba(140,35,35,0.95), rgba(100,20,20,0.95));
  box-shadow: 0 2px 15px rgba(0,0,0,0.3);
  transition: var(--kp-transition);
}

.kp-navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  max-width: 1280px;
  margin: 0 auto;
  height: 70px;
}

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

.kp-logo img {
  width: 45px;
  height: 45px;
  border-radius: 4px;
}

.kp-logo-text {
  color: var(--kp-secondary);
  font-size: 1.4rem;
  font-family: var(--kp-font-title);
  font-weight: 700;
  letter-spacing: 2px;
}

.kp-nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}

.kp-nav-links a {
  color: #f0e0c8;
  font-size: 0.9rem;
  padding: 8px 12px;
  border-radius: var(--kp-radius);
  position: relative;
  white-space: nowrap;
}

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

.kp-nav-links a:hover {
  color: var(--kp-secondary);
}

.kp-nav-links a:hover::after {
  width: 70%;
}

.kp-nav-links a.kp-active {
  color: var(--kp-secondary);
}

.kp-btn-app {
  display: inline-block;
  background: var(--kp-primary);
  color: var(--kp-white) !important;
  padding: 8px 18px;
  border: 2px solid var(--kp-secondary);
  border-radius: var(--kp-radius);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 1px;
  transition: var(--kp-transition);
  white-space: nowrap;
}

.kp-btn-app:hover {
  background: var(--kp-secondary);
  color: var(--kp-primary) !important;
  transform: scale(1.05);
}

.kp-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
}

.kp-hamburger span {
  display: block;
  width: 25px;
  height: 3px;
  background: var(--kp-secondary);
  border-radius: 2px;
  transition: var(--kp-transition);
}

/* --- Hero Banner --- */
.kp-hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--kp-primary);
}

.kp-hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  animation: kp-scroll-open 2s ease-out forwards;
}

@keyframes kp-scroll-open {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.kp-hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(140,35,35,0.7), rgba(80,15,15,0.5));
}

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

.kp-hero-badge {
  display: inline-block;
  background: rgba(230,168,79,0.2);
  border: 1px solid var(--kp-secondary);
  color: var(--kp-secondary);
  padding: 6px 20px;
  border-radius: 20px;
  font-size: 0.85rem;
  margin-bottom: 25px;
  letter-spacing: 2px;
}

.kp-hero-content h1 {
  font-size: 2.8rem;
  color: var(--kp-white);
  margin-bottom: 20px;
  text-shadow: 2px 2px 8px rgba(0,0,0,0.5);
  letter-spacing: 4px;
  line-height: 1.3;
}

.kp-hero-content h1 .kp-keyword-seal {
  color: var(--kp-secondary);
  border-bottom: 2px solid var(--kp-secondary);
  padding-bottom: 2px;
}

.kp-hero-subtitle {
  color: #e8d8c0;
  font-size: 1.15rem;
  margin-bottom: 35px;
  line-height: 1.8;
  font-style: italic;
}

.kp-hero-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.kp-btn-seal {
  display: inline-block;
  background: var(--kp-primary);
  color: var(--kp-white);
  padding: 14px 35px;
  border: 2px solid var(--kp-secondary);
  border-radius: var(--kp-radius);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 2px;
  transition: var(--kp-transition);
  cursor: pointer;
}

.kp-btn-seal:hover {
  background: var(--kp-secondary);
  color: var(--kp-primary);
  transform: translateY(-2px);
  box-shadow: 0 5px 20px rgba(230,168,79,0.4);
}

.kp-btn-ghost {
  display: inline-block;
  background: transparent;
  color: var(--kp-white);
  padding: 14px 35px;
  border: 2px solid rgba(255,255,255,0.5);
  border-radius: var(--kp-radius);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 2px;
  transition: var(--kp-transition);
  cursor: pointer;
}

.kp-btn-ghost:hover {
  border-color: var(--kp-white);
  background: rgba(255,255,255,0.1);
  color: var(--kp-white);
  transform: translateY(-2px);
}

/* --- Grid Systems --- */
.kp-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.kp-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.kp-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 25px;
}

/* --- Card Styles --- */
.kp-game-card {
  background: var(--kp-white);
  border: 1px solid #e0d5c0;
  border-radius: var(--kp-radius);
  padding: 25px;
  box-shadow: var(--kp-shadow);
  transition: var(--kp-transition);
  position: relative;
  overflow: hidden;
}

.kp-game-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--kp-primary), var(--kp-secondary));
}

.kp-game-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(140,35,35,0.15);
}

.kp-game-card h3 {
  font-size: 1.2rem;
  color: var(--kp-primary);
  margin-bottom: 8px;
}

.kp-game-card .kp-card-meta {
  color: var(--kp-text-light);
  font-size: 0.85rem;
  margin-bottom: 12px;
}

.kp-game-card p {
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 15px;
}

.kp-card-link {
  color: var(--kp-primary);
  font-weight: 600;
  font-size: 0.9rem;
  border-bottom: 1px solid transparent;
}

.kp-card-link:hover {
  color: var(--kp-secondary);
  border-bottom-color: var(--kp-secondary);
}

/* --- Video Section --- */
.kp-video-section {
  background: #f5edd8;
}

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

.kp-video-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(140,35,35,0.15);
}

.kp-video-wrapper {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  background: #000;
}

.kp-video-wrapper video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.kp-video-duration {
  position: absolute;
  top: 10px;
  right: 10px;
  background: rgba(0,0,0,0.7);
  color: var(--kp-white);
  padding: 3px 10px;
  border-radius: 3px;
  font-size: 0.8rem;
  z-index: 2;
}

.kp-video-info {
  padding: 20px;
}

.kp-video-info h3 {
  font-size: 1.05rem;
  color: var(--kp-primary);
  margin-bottom: 8px;
}

.kp-video-info p {
  font-size: 0.9rem;
  color: var(--kp-text-light);
  line-height: 1.6;
}

/* --- Masters Timeline --- */
.kp-masters-section {
  background: linear-gradient(180deg, var(--kp-bg), #f5edd8);
}

.kp-masters-scroll {
  display: flex;
  gap: 30px;
  overflow-x: auto;
  padding: 20px 0 30px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.kp-masters-scroll::-webkit-scrollbar {
  height: 6px;
}

.kp-masters-scroll::-webkit-scrollbar-track {
  background: #e0d5c0;
  border-radius: 3px;
}

.kp-masters-scroll::-webkit-scrollbar-thumb {
  background: var(--kp-primary);
  border-radius: 3px;
}

.kp-master-card {
  min-width: 280px;
  background: var(--kp-white);
  border-radius: var(--kp-radius);
  padding: 25px;
  box-shadow: var(--kp-shadow);
  scroll-snap-align: start;
  text-align: center;
  transition: var(--kp-transition);
  border-top: 3px solid var(--kp-secondary);
}

.kp-master-card:hover {
  transform: translateY(-5px);
}

.kp-master-card img {
  width: 120px;
  height: 150px;
  object-fit: cover;
  border-radius: var(--kp-radius);
  margin: 0 auto 15px;
  border: 2px solid #e0d5c0;
}

.kp-master-card h3 {
  font-size: 1.1rem;
  color: var(--kp-primary);
  margin-bottom: 5px;
}

.kp-master-card .kp-master-era {
  color: var(--kp-secondary);
  font-size: 0.85rem;
  margin-bottom: 10px;
}

.kp-master-card p {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--kp-text);
}

/* --- Books Section --- */
.kp-book-card {
  background: var(--kp-white);
  border-radius: var(--kp-radius);
  overflow: hidden;
  box-shadow: var(--kp-shadow);
  transition: var(--kp-transition);
}

.kp-book-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(140,35,35,0.15);
}

.kp-book-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.kp-book-card .kp-book-info {
  padding: 20px;
}

.kp-book-card h3 {
  font-size: 1.05rem;
  color: var(--kp-primary);
  margin-bottom: 8px;
}

.kp-book-card p {
  font-size: 0.9rem;
  color: var(--kp-text-light);
  line-height: 1.6;
  margin-bottom: 12px;
}

.kp-btn-small {
  display: inline-block;
  background: var(--kp-accent);
  color: var(--kp-white);
  padding: 6px 18px;
  border-radius: var(--kp-radius);
  font-size: 0.85rem;
  transition: var(--kp-transition);
}

.kp-btn-small:hover {
  background: var(--kp-primary);
  color: var(--kp-white);
}

/* --- Lecture Section --- */
.kp-lecture-section {
  background: linear-gradient(135deg, #f5edd8, var(--kp-bg));
}

.kp-lecture-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.kp-lecture-content h3 {
  font-size: 1.6rem;
  color: var(--kp-primary);
  margin-bottom: 20px;
}

.kp-lecture-list {
  margin-bottom: 20px;
}

.kp-lecture-list li {
  padding: 10px 0;
  border-bottom: 1px dashed #e0d5c0;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 10px;
}

.kp-lecture-list li .kp-list-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--kp-primary);
  color: var(--kp-white);
  border-radius: 50%;
  font-size: 0.8rem;
  flex-shrink: 0;
}

.kp-lecture-price {
  background: rgba(140,35,35,0.05);
  border: 1px solid #e0d5c0;
  border-radius: var(--kp-radius);
  padding: 15px 20px;
  margin-top: 15px;
}

.kp-lecture-price .kp-price {
  font-size: 1.8rem;
  color: var(--kp-primary);
  font-weight: 700;
}

.kp-lecture-price .kp-price-note {
  color: var(--kp-text-light);
  font-size: 0.85rem;
}

.kp-form-card {
  background: var(--kp-white);
  border-radius: var(--kp-radius);
  padding: 30px;
  box-shadow: var(--kp-shadow);
  border-top: 3px solid var(--kp-secondary);
}

.kp-form-card h3 {
  font-size: 1.3rem;
  color: var(--kp-primary);
  margin-bottom: 20px;
  text-align: center;
}

.kp-form-group {
  margin-bottom: 18px;
}

.kp-form-group label {
  display: block;
  font-size: 0.9rem;
  color: var(--kp-text);
  margin-bottom: 6px;
  font-weight: 600;
}

.kp-form-input {
  width: 100%;
  padding: 10px 15px;
  border: 1px solid #d0c5b0;
  border-radius: var(--kp-radius);
  font-size: 0.95rem;
  font-family: var(--kp-font-body);
  background: #faf5eb;
  transition: var(--kp-transition);
}

.kp-form-input:focus {
  outline: none;
  border-color: var(--kp-primary);
  box-shadow: 0 0 0 3px rgba(140,35,35,0.1);
}

.kp-btn-submit {
  width: 100%;
  padding: 12px;
  background: var(--kp-primary);
  color: var(--kp-white);
  border: none;
  border-radius: var(--kp-radius);
  font-size: 1rem;
  font-weight: 700;
  font-family: var(--kp-font-body);
  cursor: pointer;
  transition: var(--kp-transition);
  letter-spacing: 2px;
}

.kp-btn-submit:hover {
  background: var(--kp-secondary);
  color: var(--kp-primary);
}

/* --- Community Section --- */
.kp-community-section {
  background: var(--kp-bg);
}

.kp-community-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

.kp-community-posts {
  background: var(--kp-white);
  border-radius: var(--kp-radius);
  padding: 25px;
  box-shadow: var(--kp-shadow);
}

.kp-community-posts h3 {
  font-size: 1.2rem;
  color: var(--kp-primary);
  margin-bottom: 15px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--kp-secondary);
}

.kp-post-item {
  padding: 12px 0;
  border-bottom: 1px dashed #e0d5c0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.kp-post-item:last-child {
  border-bottom: none;
}

.kp-post-item a {
  font-size: 0.95rem;
  color: var(--kp-text);
}

.kp-post-item a:hover {
  color: var(--kp-primary);
}

.kp-post-item .kp-post-date {
  color: var(--kp-text-light);
  font-size: 0.8rem;
  white-space: nowrap;
}

.kp-topic-card {
  background: var(--kp-white);
  border-radius: var(--kp-radius);
  padding: 20px;
  box-shadow: var(--kp-shadow);
  margin-bottom: 15px;
  border-left: 3px solid var(--kp-secondary);
  transition: var(--kp-transition);
}

.kp-topic-card:hover {
  transform: translateX(5px);
}

.kp-topic-card h4 {
  font-size: 1rem;
  color: var(--kp-primary);
  margin-bottom: 6px;
}

.kp-topic-card p {
  font-size: 0.85rem;
  color: var(--kp-text-light);
}

/* --- Articles Section --- */
.kp-article-card {
  background: var(--kp-white);
  border-radius: var(--kp-radius);
  overflow: hidden;
  box-shadow: var(--kp-shadow);
  transition: var(--kp-transition);
}

.kp-article-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(140,35,35,0.15);
}

.kp-article-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.kp-article-card .kp-article-info {
  padding: 20px;
}

.kp-article-card h3 {
  font-size: 1.05rem;
  color: var(--kp-primary);
  margin-bottom: 8px;
}

.kp-article-card p {
  font-size: 0.9rem;
  color: var(--kp-text-light);
  line-height: 1.6;
  margin-bottom: 10px;
}

.kp-article-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--kp-text-light);
}

/* --- Gallery Masonry --- */
.kp-gallery-section {
  background: #f5edd8;
}

.kp-gallery-grid {
  columns: 4;
  column-gap: 20px;
}

.kp-gallery-item {
  break-inside: avoid;
  margin-bottom: 20px;
  border-radius: var(--kp-radius);
  overflow: hidden;
  box-shadow: var(--kp-shadow);
  transition: var(--kp-transition);
  position: relative;
}

.kp-gallery-item:hover {
  transform: scale(1.02);
  box-shadow: 0 8px 25px rgba(140,35,35,0.2);
}

.kp-gallery-item img {
  width: 100%;
  display: block;
}

.kp-gallery-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  background: linear-gradient(transparent, rgba(0,0,0,0.7));
  color: var(--kp-white);
  padding: 20px 15px 12px;
  font-size: 0.85rem;
}

/* --- Trust Section --- */
.kp-trust-section {
  background: var(--kp-bg);
}

.kp-trust-logos {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 40px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.kp-trust-logo-item {
  text-align: center;
  opacity: 0.8;
  transition: var(--kp-transition);
}

.kp-trust-logo-item:hover {
  opacity: 1;
}

.kp-trust-logo-item img {
  height: 70px;
  margin: 0 auto 8px;
}

.kp-trust-logo-item span {
  display: block;
  font-size: 0.8rem;
  color: var(--kp-text-light);
}

.kp-trust-badges {
  display: flex;
  justify-content: center;
  gap: 30px;
  flex-wrap: wrap;
}

.kp-badge-item {
  background: var(--kp-white);
  border-radius: var(--kp-radius);
  padding: 20px 30px;
  box-shadow: var(--kp-shadow);
  text-align: center;
  border-top: 3px solid var(--kp-secondary);
}

.kp-badge-item img {
  height: 60px;
  margin: 0 auto 10px;
}

.kp-badge-item h4 {
  font-size: 0.9rem;
  color: var(--kp-primary);
}

.kp-badge-item p {
  font-size: 0.8rem;
  color: var(--kp-text-light);
}

/* --- Footer --- */
.kp-footer {
  background: var(--kp-primary);
  color: #e8d8c0;
  padding-top: 60px;
}

.kp-footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
  gap: 40px;
  padding-bottom: 40px;
}

.kp-footer h4 {
  color: var(--kp-secondary);
  font-size: 1.1rem;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(230,168,79,0.3);
}

.kp-footer p {
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: 8px;
}

.kp-footer-links a {
  display: block;
  color: #e8d8c0;
  font-size: 0.9rem;
  padding: 5px 0;
  transition: var(--kp-transition);
}

.kp-footer-links a:hover {
  color: var(--kp-secondary);
  padding-left: 5px;
}

.kp-footer-social {
  display: flex;
  gap: 12px;
  margin-top: 15px;
}

.kp-footer-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(230,168,79,0.5);
  border-radius: 50%;
  color: var(--kp-secondary);
  font-size: 0.85rem;
  transition: var(--kp-transition);
}

.kp-footer-social a:hover {
  background: var(--kp-secondary);
  color: var(--kp-primary);
}

.kp-footer-seo {
  padding: 20px 0;
  border-top: 1px solid rgba(230,168,79,0.2);
  font-size: 0.8rem;
  color: rgba(232,216,192,0.6);
  text-align: center;
  line-height: 1.6;
}

.kp-footer-bottom {
  text-align: center;
  padding: 20px 0;
  border-top: 1px solid rgba(230,168,79,0.2);
  font-size: 0.85rem;
}

.kp-footer-bottom p {
  margin-bottom: 4px;
}

/* --- Page Header (Inner Pages) --- */
.kp-page-header {
  position: relative;
  height: 350px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-top: 70px;
}

.kp-page-header-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
}

.kp-page-header-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(140,35,35,0.8), rgba(80,15,15,0.6));
}

.kp-page-header-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--kp-white);
}

.kp-page-header-content h1 {
  font-size: 2.2rem;
  color: var(--kp-white);
  margin-bottom: 10px;
  text-shadow: 2px 2px 8px rgba(0,0,0,0.5);
}

.kp-page-header-content p {
  font-size: 1.05rem;
  color: #e8d8c0;
  max-width: 600px;
  margin: 0 auto;
}

/* --- Breadcrumb --- */
.kp-breadcrumb {
  padding: 15px 0;
  font-size: 0.85rem;
  color: var(--kp-text-light);
  border-bottom: 1px solid #e0d5c0;
}

.kp-breadcrumb a {
  color: var(--kp-text-light);
}

.kp-breadcrumb a:hover {
  color: var(--kp-primary);
}

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

/* --- Content Area --- */
.kp-content-area {
  padding: 50px 0;
}

.kp-content-area h2 {
  font-size: 1.6rem;
  color: var(--kp-primary);
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--kp-secondary);
}

.kp-content-area h3 {
  font-size: 1.3rem;
  color: var(--kp-primary);
  margin: 30px 0 15px;
}

.kp-content-area p {
  margin-bottom: 18px;
  line-height: 1.9;
  font-size: 1rem;
}

.kp-content-area img {
  border-radius: var(--kp-radius);
  margin: 20px 0;
  box-shadow: var(--kp-shadow);
}

/* --- FAQ Section --- */
.kp-faq-item {
  background: var(--kp-white);
  border-radius: var(--kp-radius);
  margin-bottom: 15px;
  box-shadow: var(--kp-shadow);
  overflow: hidden;
}

.kp-faq-question {
  padding: 18px 25px;
  font-weight: 700;
  color: var(--kp-primary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--kp-transition);
}

.kp-faq-question:hover {
  background: rgba(140,35,35,0.03);
}

.kp-faq-question .kp-faq-toggle {
  font-size: 1.2rem;
  transition: var(--kp-transition);
}

.kp-faq-answer {
  padding: 0 25px 18px;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--kp-text);
  display: none;
}

.kp-faq-item.kp-active .kp-faq-answer {
  display: block;
}

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

/* --- Go Board (Fupan page) --- */
.kp-board-container {
  display: grid;
  grid-template-columns: 1fr 350px;
  gap: 30px;
  margin: 30px 0;
}

.kp-go-board {
  background: #DEB887;
  border: 3px solid #8B7355;
  border-radius: var(--kp-radius);
  padding: 20px;
  aspect-ratio: 1;
  max-width: 560px;
  position: relative;
  box-shadow: 0 5px 20px rgba(0,0,0,0.2);
}

.kp-board-grid {
  width: 100%;
  height: 100%;
  display: grid;
  grid-template-columns: repeat(19, 1fr);
  grid-template-rows: repeat(19, 1fr);
  position: relative;
}

.kp-board-controls {
  display: flex;
  gap: 10px;
  margin-top: 15px;
  flex-wrap: wrap;
}

.kp-board-btn {
  padding: 8px 20px;
  background: var(--kp-primary);
  color: var(--kp-white);
  border: none;
  border-radius: var(--kp-radius);
  font-family: var(--kp-font-body);
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--kp-transition);
}

.kp-board-btn:hover {
  background: var(--kp-secondary);
  color: var(--kp-primary);
}

.kp-annotation-panel {
  background: var(--kp-white);
  border-radius: var(--kp-radius);
  padding: 25px;
  box-shadow: var(--kp-shadow);
  border-top: 3px solid var(--kp-secondary);
  max-height: 600px;
  overflow-y: auto;
}

.kp-annotation-panel h3 {
  font-size: 1.2rem;
  color: var(--kp-primary);
  margin-bottom: 15px;
}

.kp-annotation-item {
  padding: 12px 0;
  border-bottom: 1px dashed #e0d5c0;
}

.kp-annotation-item .kp-move-num {
  display: inline-block;
  background: var(--kp-primary);
  color: var(--kp-white);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  text-align: center;
  line-height: 24px;
  font-size: 0.75rem;
  margin-right: 8px;
}

.kp-annotation-item .kp-ancient-text {
  font-style: italic;
  color: var(--kp-text-light);
  font-size: 0.9rem;
  display: block;
  margin-top: 5px;
}

/* --- App Download --- */
.kp-app-section {
  text-align: center;
}

.kp-app-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin: 40px 0;
}

.kp-app-feature-item {
  background: var(--kp-white);
  border-radius: var(--kp-radius);
  padding: 30px 20px;
  box-shadow: var(--kp-shadow);
  transition: var(--kp-transition);
}

.kp-app-feature-item:hover {
  transform: translateY(-5px);
}

.kp-app-feature-icon {
  font-size: 2.5rem;
  margin-bottom: 15px;
}

.kp-app-feature-item h3 {
  font-size: 1.1rem;
  color: var(--kp-primary);
  margin-bottom: 10px;
}

.kp-app-feature-item p {
  font-size: 0.9rem;
  color: var(--kp-text-light);
}

.kp-app-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  margin: 30px 0;
}

.kp-app-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 30px;
  background: var(--kp-primary);
  color: var(--kp-white);
  border-radius: 30px;
  font-size: 1rem;
  font-weight: 600;
  transition: var(--kp-transition);
  border: 2px solid var(--kp-secondary);
}

.kp-app-btn:hover {
  background: var(--kp-secondary);
  color: var(--kp-primary);
  transform: translateY(-2px);
}

/* --- Animations --- */
.kp-fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.kp-fade-in.kp-visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Utilities --- */
.kp-text-center { text-align: center; }
.kp-text-primary { color: var(--kp-primary); }
.kp-text-secondary { color: var(--kp-secondary); }
.kp-mt-20 { margin-top: 20px; }
.kp-mb-20 { margin-bottom: 20px; }
.kp-mt-40 { margin-top: 40px; }
.kp-mb-40 { margin-bottom: 40px; }