/* ========================================
   心有山海 - 国学复古设计系统 v3.0
   高级视觉效果版本
   ======================================== */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Ma+Shan+Zheng&family=Noto+Serif+SC:wght@300;400;500;600;700&display=swap');

/* --- CSS Variables --- */
:root {
  /* Colors - 国学复古配色 */
  --color-ink: #1a1a1a;
  --color-ink-light: #2a2a2a;
  --color-gold: #c9a962;
  --color-gold-light: #e0c878;
  --color-gold-dark: #a08040;
  --color-cinnabar: #b54a32;
  --color-indigo: #3d5a80;
  --color-bronze: #8b7355;

  /* Surface Colors */
  --color-scroll: #e8e0d0;
  --color-paper: #f5f0e6;
  --color-antique: #d4c8b0;
  --color-dark-bg: #1a1a1a;
  --color-dark-surface: #252525;

  /* Typography */
  --font-heading: "Noto Serif SC", "Source Han Serif SC", "SimSun", serif;
  --font-body: "Noto Serif SC", "Source Han Serif SC", "SimSun", serif;
  --font-calligraphy: "Ma Shan Zheng", "ZCOOL XiaoWei", cursive;

  /* Spacing */
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 48px;
  --space-xl: 80px;
  --space-2xl: 120px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
  --shadow-gold: 0 4px 20px rgba(201, 169, 98, 0.3);
  --shadow-gold-lg: 0 8px 40px rgba(201, 169, 98, 0.4);

  /* Transitions */
  --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  /* Layout */
  --max-width: 1000px;
  --nav-height: 70px;
}

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

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

body {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 2;
  color: var(--color-paper);
  background-color: var(--color-dark-bg);
  letter-spacing: 0.05em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* 噪点纹理叠加 */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(201, 169, 98, 0.04) 0%, transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(201, 169, 98, 0.03) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* 噪点纹理 */
body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
  opacity: 0.02;
  pointer-events: none;
  z-index: 0;
}

img { max-width: 100%; height: auto; }
a { color: var(--color-gold); text-decoration: none; transition: var(--transition-base); }
a:hover { color: var(--color-gold-light); }

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 500;
  line-height: 1.4;
  color: var(--color-paper);
}

h1 { font-size: 3rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.25rem; }

@media (max-width: 768px) {
  h1 { font-size: 2.25rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.125rem; }
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
  position: relative;
  z-index: 1;
}

/* --- Buttons with Ripple Effect --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 36px;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  border-radius: 2px;
  border: 1px solid var(--color-gold);
  cursor: pointer;
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}

/* 光泽扫过效果 */
.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: 0.5s;
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-dark) 100%);
  color: var(--color-ink);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-gold-light) 0%, var(--color-gold) 100%);
  box-shadow: var(--shadow-gold-lg);
  transform: translateY(-3px);
  color: var(--color-ink);
}

.btn-secondary {
  background: transparent;
  color: var(--color-gold);
}

.btn-secondary:hover {
  background: rgba(201, 169, 98, 0.1);
  color: var(--color-gold-light);
  box-shadow: 0 0 30px rgba(201, 169, 98, 0.2);
}

.btn-sm { padding: 10px 24px; font-size: 0.875rem; }
.btn-full { width: 100%; }
.btn-large { padding: 18px 48px; font-size: 1.125rem; }

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(26, 26, 26, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 1000;
  border-bottom: 1px solid rgba(201, 169, 98, 0.2);
  transition: var(--transition-base);
}

.nav.scrolled {
  background: rgba(26, 26, 26, 0.98);
  box-shadow: var(--shadow-md);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo { display: flex; align-items: center; }
.logo-text {
  font-family: var(--font-calligraphy);
  font-size: 1.75rem;
  color: var(--color-gold);
  letter-spacing: 0.1em;
  text-shadow: 0 2px 20px rgba(201, 169, 98, 0.3);
}

.nav-links { display: flex; gap: var(--space-lg); }

.nav-link {
  font-size: 0.9375rem;
  color: var(--color-paper);
  position: relative;
  padding: 4px 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-gold-dark), var(--color-gold), var(--color-gold-dark));
  transition: var(--transition-base);
  transform: translateX(-50%);
}

.nav-link:hover { color: var(--color-gold); }
.nav-link:hover::after { width: 100%; }

.nav-link-highlight {
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-dark) 100%);
  color: var(--color-ink) !important;
  padding: 8px 20px;
  border-radius: 2px;
}

.nav-link-highlight:hover {
  box-shadow: var(--shadow-gold);
  transform: translateY(-2px);
}

.nav-link-highlight::after { display: none; }

.nav-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-gold);
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-menu-btn { display: block; }
}

/* --- Hero with Advanced Effects --- */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--nav-height) var(--space-md) var(--space-xl);
  position: relative;
  overflow: hidden;
}

/* 旋转装饰圆环 */
.hero-decoration {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 500px;
  height: 500px;
  border: 1px solid rgba(201, 169, 98, 0.08);
  border-radius: 50%;
  pointer-events: none;
  animation: rotate 60s linear infinite;
}

@keyframes rotate {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

.hero-decoration::before {
  content: '';
  position: absolute;
  top: 30px;
  left: 30px;
  right: 30px;
  bottom: 30px;
  border: 1px solid rgba(201, 169, 98, 0.12);
  border-radius: 50%;
  animation: rotate 45s linear infinite reverse;
}

.hero-decoration::after {
  content: '';
  position: absolute;
  top: 60px;
  left: 60px;
  right: 60px;
  bottom: 60px;
  border: 1px solid rgba(201, 169, 98, 0.06);
  border-radius: 50%;
  animation: rotate 80s linear infinite;
}

.hero-content { position: relative; z-index: 1; }

.hero-subtitle {
  font-size: 0.875rem;
  color: var(--color-gold);
  letter-spacing: 0.4em;
  margin-bottom: var(--space-md);
  text-transform: uppercase;
  animation: fadeInUp 0.8s ease-out;
}

.hero-title {
  font-family: var(--font-calligraphy);
  font-size: 5.5rem;
  color: var(--color-gold);
  margin-bottom: var(--space-md);
  letter-spacing: 0.25em;
  text-shadow:
    0 0 40px rgba(201, 169, 98, 0.3),
    0 4px 20px rgba(0, 0, 0, 0.5);
  animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

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

@media (max-width: 768px) {
  .hero-title { font-size: 3.5rem; letter-spacing: 0.15em; }
  .hero-decoration { width: 300px; height: 300px; }
}

.hero-desc {
  font-size: 1.125rem;
  color: var(--color-scroll);
  margin-bottom: var(--space-lg);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
  line-height: 2.2;
  animation: fadeInUp 0.8s ease-out 0.4s backwards;
}

.hero-subtext {
  font-size: 0.9375rem;
  opacity: 0.7;
  margin-top: var(--space-sm);
  display: block;
}

.hero-divider {
  width: 80px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
  margin: var(--space-lg) auto;
  position: relative;
  animation: fadeInUp 0.8s ease-out 0.6s backwards;
}

.hero-divider::before {
  content: '◆';
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  color: var(--color-gold);
  font-size: 0.625rem;
  background: var(--color-dark-bg);
  padding: 0 12px;
}

.hero-actions {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease-out 0.8s backwards;
}

.hero-scroll {
  position: absolute;
  bottom: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  color: var(--color-antique);
  font-size: 0.8125rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  letter-spacing: 0.1em;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
  40% { transform: translateX(-50%) translateY(-10px); }
  60% { transform: translateX(-50%) translateY(-5px); }
}

/* --- Section Common --- */
.section {
  padding: var(--space-2xl) 0;
  position: relative;
}

.section-label {
  display: block;
  font-size: 0.75rem;
  color: var(--color-gold);
  letter-spacing: 0.25em;
  text-align: center;
  margin-bottom: var(--space-sm);
  text-transform: uppercase;
}

.section-title {
  text-align: center;
  margin-bottom: var(--space-md);
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, var(--color-gold-dark), var(--color-gold), var(--color-gold-dark));
  margin: var(--space-md) auto 0;
}

.section-desc {
  text-align: center;
  color: var(--color-scroll);
  max-width: 600px;
  margin: 0 auto var(--space-lg);
  line-height: 2;
}

/* --- Reading Section --- */
.section-reading {
  background: linear-gradient(180deg, var(--color-dark-bg) 0%, var(--color-dark-surface) 50%, var(--color-dark-bg) 100%);
  position: relative;
}

.section-reading::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(201, 169, 98, 0.3), transparent);
}

.reading-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}

@media (max-width: 768px) {
  .reading-features {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
  }
}

.reading-feature {
  text-align: center;
  padding: var(--space-lg);
  background: rgba(201, 169, 98, 0.03);
  border: 1px solid rgba(201, 169, 98, 0.15);
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}

.reading-feature::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-gold-dark), var(--color-gold), var(--color-gold-dark));
  transform: scaleX(0);
  transition: var(--transition-base);
}

.reading-feature:hover {
  background: rgba(201, 169, 98, 0.08);
  border-color: var(--color-gold);
  transform: translateY(-6px);
  box-shadow: var(--shadow-gold-lg);
}

.reading-feature:hover::before {
  transform: scaleX(1);
}

.reading-feature-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto var(--space-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(201, 169, 98, 0.15) 0%, rgba(201, 169, 98, 0.05) 100%);
  border-radius: 50%;
  color: var(--color-gold);
  border: 1px solid rgba(201, 169, 98, 0.2);
  transition: var(--transition-base);
}

.reading-feature:hover .reading-feature-icon {
  transform: scale(1.1);
  box-shadow: 0 0 30px rgba(201, 169, 98, 0.3);
}

.reading-feature h3 {
  color: var(--color-gold);
  margin-bottom: var(--space-sm);
}

.reading-feature p {
  color: var(--color-text-muted, #a09080);
  font-size: 0.9375rem;
  line-height: 1.8;
}

.reading-cta {
  text-align: center;
  margin-top: var(--space-xl);
}

/* --- About Section --- */
.about-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--space-xl);
  align-items: start;
}

@media (max-width: 768px) {
  .about-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

.about-image {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}

.about-image-frame {
  width: 220px;
  height: 280px;
  background: linear-gradient(145deg, var(--color-paper) 0%, var(--color-scroll) 100%);
  border: 2px solid var(--color-gold);
  box-shadow: var(--shadow-lg), 0 0 40px rgba(201, 169, 98, 0.15);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  position: relative;
  transition: var(--transition-base);
}

.about-image-frame::before {
  content: '';
  position: absolute;
  inset: 8px;
  border: 1px solid rgba(201, 169, 98, 0.3);
  pointer-events: none;
}

.about-image-frame:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg), 0 0 60px rgba(201, 169, 98, 0.25);
}

.about-image-frame svg {
  color: var(--color-bronze);
  opacity: 0.6;
}

.about-image-frame span {
  font-family: var(--font-calligraphy);
  font-size: 1.5rem;
  color: var(--color-ink);
}

.about-seal {
  font-family: var(--font-calligraphy);
  font-size: 1rem;
  color: var(--color-cinnabar);
  border: 2px solid var(--color-cinnabar);
  padding: 6px 16px;
  letter-spacing: 0.2em;
  transition: var(--transition-base);
}

.about-seal:hover {
  background: var(--color-cinnabar);
  color: var(--color-paper);
}

.about-content .section-label { text-align: left; }
.about-content .section-title { text-align: left; }
.about-content .section-title::after { margin: var(--space-md) 0 0; }

.about-intro {
  margin-bottom: var(--space-md);
  color: var(--color-scroll);
  line-height: 2.2;
}

.quote, blockquote {
  border-left: 3px solid var(--color-gold);
  padding: var(--space-md) var(--space-lg);
  font-family: var(--font-calligraphy);
  color: var(--color-gold);
  margin: var(--space-lg) 0;
  font-size: 1.125rem;
  line-height: 2.2;
  background: rgba(201, 169, 98, 0.05);
  position: relative;
}

.quote::before, blockquote::before {
  content: '"';
  position: absolute;
  top: -10px;
  left: 16px;
  font-size: 3rem;
  color: var(--color-gold);
  opacity: 0.3;
  font-family: serif;
}

.about-credentials {
  margin: var(--space-lg) 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
}

@media (max-width: 768px) {
  .about-credentials {
    grid-template-columns: 1fr;
  }
}

.credential-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm);
  background: rgba(201, 169, 98, 0.05);
  border: 1px solid rgba(201, 169, 98, 0.15);
  font-size: 0.9375rem;
  color: var(--color-scroll);
  transition: var(--transition-base);
}

.credential-item:hover {
  background: rgba(201, 169, 98, 0.1);
  border-color: var(--color-gold);
}

.credential-icon {
  color: var(--color-gold);
  font-size: 0.625rem;
}

.about-stats {
  display: flex;
  gap: var(--space-lg);
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(201, 169, 98, 0.2);
}

@media (max-width: 768px) {
  .about-stats { justify-content: center; flex-wrap: wrap; }
  .about-content .section-label,
  .about-content .section-title { text-align: center; }
  .about-content .section-title::after { margin: var(--space-md) auto 0; }
}

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

.stat-number {
  font-family: var(--font-calligraphy);
  font-size: 3rem;
  color: var(--color-gold);
  line-height: 1;
  display: block;
  text-shadow: 0 2px 20px rgba(201, 169, 98, 0.3);
}

.stat-label {
  font-size: 0.875rem;
  color: var(--color-antique);
  margin-top: var(--space-xs);
  display: block;
}

/* --- Philosophy Section - 5 Books Grid --- */
.section-philosophy {
  background: linear-gradient(180deg, var(--color-dark-bg) 0%, var(--color-dark-surface) 50%, var(--color-dark-bg) 100%);
  position: relative;
}

.section-philosophy::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(201, 169, 98, 0.3), transparent);
}

.philosophy-intro {
  text-align: center;
  color: var(--color-scroll);
  max-width: 700px;
  margin: 0 auto var(--space-lg);
  font-size: 1rem;
  line-height: 1.8;
}

.philosophy-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.philosophy-grid-5 {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

@media (max-width: 1024px) {
  .philosophy-grid,
  .philosophy-grid-5 {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .philosophy-grid,
  .philosophy-grid-5 {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
  }
}

.philosophy-card {
  background: linear-gradient(145deg, var(--color-paper) 0%, var(--color-scroll) 100%);
  padding: var(--space-md);
  border: 1px solid var(--color-gold);
  text-align: center;
  transition: var(--transition-base);
  display: block;
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.philosophy-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(201, 169, 98, 0.15), transparent);
  transition: 0.6s;
}

.philosophy-card:hover {
  box-shadow: var(--shadow-gold-lg);
  transform: translateY(-6px);
}

.philosophy-card:hover::before {
  left: 100%;
}

.philosophy-number {
  font-family: var(--font-calligraphy);
  font-size: 2rem;
  color: var(--color-gold);
  opacity: 0.25;
  margin-bottom: var(--space-xs);
}

.philosophy-icon {
  color: var(--color-gold-dark);
  margin-bottom: var(--space-sm);
  transition: var(--transition-base);
}

.philosophy-card:hover .philosophy-icon {
  transform: scale(1.1);
  color: var(--color-gold);
}

.philosophy-card h3 {
  color: var(--color-ink);
  font-family: var(--font-calligraphy);
  font-size: 1.25rem;
  margin-bottom: var(--space-xs);
}

.philosophy-card .subtitle {
  font-size: 0.75rem;
  color: var(--color-bronze);
  margin-bottom: var(--space-sm);
  letter-spacing: 0.1em;
}

.philosophy-card p {
  color: var(--color-ink-light);
  font-size: 0.875rem;
  line-height: 1.7;
}

.philosophy-chapters {
  list-style: none;
  margin-top: var(--space-sm);
  padding-top: var(--space-sm);
  border-top: 1px solid rgba(201, 169, 98, 0.2);
  text-align: left;
}

.philosophy-chapters li {
  font-size: 0.8125rem;
  color: var(--color-ink-light);
  padding: 4px 0;
  position: relative;
  padding-left: 12px;
}

.philosophy-chapters li::before {
  content: '·';
  position: absolute;
  left: 0;
  color: var(--color-gold);
}

.philosophy-cta {
  text-align: center;
  margin-top: var(--space-xl);
}

/* --- Pricing Section --- */
.section-pricing {
  background: linear-gradient(180deg, var(--color-dark-bg) 0%, var(--color-dark-surface) 50%, var(--color-dark-bg) 100%);
  position: relative;
}

.section-pricing::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(201, 169, 98, 0.3), transparent);
}

.content-types {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

@media (max-width: 1024px) {
  .content-types {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 576px) {
  .content-types {
    grid-template-columns: 1fr;
  }
}

.content-type-item {
  text-align: center;
  padding: var(--space-md);
  background: rgba(201, 169, 98, 0.03);
  border: 1px solid rgba(201, 169, 98, 0.15);
  transition: var(--transition-base);
}

.content-type-item:hover {
  background: rgba(201, 169, 98, 0.08);
  border-color: var(--color-gold);
  transform: translateY(-4px);
}

.content-type-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto var(--space-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: var(--transition-base);
}

.content-type-icon.video {
  background: linear-gradient(135deg, rgba(181, 74, 50, 0.2) 0%, rgba(181, 74, 50, 0.05) 100%);
  color: var(--color-cinnabar);
  border: 1px solid rgba(181, 74, 50, 0.3);
}

.content-type-icon.audio {
  background: linear-gradient(135deg, rgba(61, 90, 128, 0.2) 0%, rgba(61, 90, 128, 0.05) 100%);
  color: var(--color-indigo);
  border: 1px solid rgba(61, 90, 128, 0.3);
}

.content-type-icon.article {
  background: linear-gradient(135deg, rgba(201, 169, 98, 0.2) 0%, rgba(201, 169, 98, 0.05) 100%);
  color: var(--color-gold);
  border: 1px solid rgba(201, 169, 98, 0.3);
}

.content-type-icon.pdf {
  background: linear-gradient(135deg, rgba(139, 115, 85, 0.2) 0%, rgba(139, 115, 85, 0.05) 100%);
  color: var(--color-bronze);
  border: 1px solid rgba(139, 115, 85, 0.3);
}

.content-type-item:hover .content-type-icon {
  transform: scale(1.1);
}

.content-type-item h4 {
  color: var(--color-gold);
  font-size: 1rem;
  margin-bottom: var(--space-xs);
}

.content-type-item p {
  color: var(--color-scroll);
  font-size: 0.875rem;
  line-height: 1.6;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

@media (max-width: 1200px) {
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
  }
}

.pricing-card {
  background: linear-gradient(145deg, var(--color-paper) 0%, var(--color-scroll) 100%);
  padding: var(--space-lg);
  border: 1px solid var(--color-antique);
  position: relative;
  transition: var(--transition-base);
  display: flex;
  flex-direction: column;
}

.pricing-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(201, 169, 98, 0.1), transparent);
  transition: 0.6s;
}

.pricing-card:hover {
  border-color: var(--color-gold);
  box-shadow: var(--shadow-gold);
  transform: translateY(-6px);
}

.pricing-card:hover::before {
  left: 100%;
}

.pricing-card.featured {
  border-color: var(--color-gold);
  border-width: 2px;
  box-shadow: var(--shadow-gold);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-dark) 100%);
  color: var(--color-ink);
  font-size: 0.75rem;
  padding: 4px 16px;
  font-weight: 500;
  white-space: nowrap;
  box-shadow: var(--shadow-gold);
}

.pricing-header {
  text-align: center;
  padding-bottom: var(--space-md);
  border-bottom: 1px solid rgba(201, 169, 98, 0.2);
  margin-bottom: var(--space-md);
}

.pricing-header h3 {
  color: var(--color-ink);
  font-family: var(--font-calligraphy);
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
}

.pricing-price {
  margin-bottom: var(--space-sm);
}

.pricing-price .currency {
  font-size: 1rem;
  color: var(--color-ink);
  vertical-align: top;
}

.pricing-price .amount {
  font-family: var(--font-calligraphy);
  font-size: 3rem;
  color: var(--color-ink);
  line-height: 1;
}

.pricing-price .period {
  font-size: 0.875rem;
  color: var(--color-ink-light);
}

.pricing-desc {
  color: var(--color-ink-light);
  font-size: 0.875rem;
}

.pricing-features {
  list-style: none;
  flex: 1;
  margin-bottom: var(--space-md);
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) 0;
  font-size: 0.9375rem;
  color: var(--color-ink-light);
}

.pricing-features li.included svg {
  color: #5a8f5a;
  flex-shrink: 0;
}

.pricing-features li.not-included {
  color: var(--color-antique);
}

.pricing-features li.not-included svg {
  color: var(--color-antique);
  flex-shrink: 0;
}

.pricing-card .btn {
  margin-top: auto;
}

/* --- Courses Section --- */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

@media (max-width: 1024px) {
  .courses-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
  }
}

.course-card {
  background: linear-gradient(145deg, var(--color-paper) 0%, var(--color-scroll) 100%);
  padding: var(--space-lg);
  border: 1px solid var(--color-antique);
  position: relative;
  transition: var(--transition-base);
  overflow: hidden;
}

.course-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(201, 169, 98, 0.1), transparent);
  transition: 0.6s;
}

.course-card:hover {
  border-color: var(--color-gold);
  box-shadow: var(--shadow-gold);
  transform: translateY(-6px);
}

.course-card:hover::before {
  left: 100%;
}

.course-card.featured {
  border-color: var(--color-gold);
  border-width: 2px;
  box-shadow: var(--shadow-gold);
}

.course-badge {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--color-gold-dark);
  background: rgba(201, 169, 98, 0.15);
  padding: 4px 12px;
  margin-bottom: var(--space-sm);
  letter-spacing: 0.1em;
}

.course-featured-label {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-dark) 100%);
  color: var(--color-ink);
  font-size: 0.75rem;
  padding: 4px 12px;
  font-weight: 500;
}

.course-card h3 {
  color: var(--color-ink);
  font-family: var(--font-calligraphy);
  font-size: 1.375rem;
  margin-bottom: var(--space-sm);
}

.course-desc {
  color: var(--color-ink-light);
  font-size: 0.9375rem;
  margin-bottom: var(--space-md);
  line-height: 1.7;
}

.course-features {
  list-style: none;
  margin-bottom: var(--space-md);
}

.course-features li {
  position: relative;
  padding-left: var(--space-md);
  margin-bottom: var(--space-xs);
  font-size: 0.875rem;
  color: var(--color-ink-light);
}

.course-features li::before {
  content: '◆';
  position: absolute;
  left: 0;
  color: var(--color-gold);
  font-size: 0.625rem;
}

.course-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-antique);
}

.course-price {
  font-family: var(--font-calligraphy);
  font-size: 1.375rem;
  color: var(--color-ink);
}

/* --- Contact --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
}

@media (max-width: 768px) {
  .contact-grid { grid-template-columns: 1fr; }
}

.contact-info .section-label,
.contact-info .section-title {
  text-align: left;
}

.contact-info .section-title::after {
  margin: var(--space-md) 0 0;
}

.contact-desc {
  color: var(--color-scroll);
  margin-bottom: var(--space-lg);
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-paper);
  padding: var(--space-sm);
  border-radius: 4px;
  transition: var(--transition-base);
}

.contact-item:hover {
  background: rgba(201, 169, 98, 0.05);
}

.contact-item svg {
  color: var(--color-gold);
}

.contact-social {
  display: flex;
  gap: var(--space-sm);
}

.social-link {
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gold);
  transition: var(--transition-base);
}

.social-link:hover {
  background: var(--color-gold);
  color: var(--color-ink);
  transform: translateY(-3px);
  box-shadow: var(--shadow-gold);
}

.contact-form-wrapper {
  background: linear-gradient(145deg, var(--color-paper) 0%, var(--color-scroll) 100%);
  padding: var(--space-lg);
  border: 1px solid var(--color-antique);
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  color: var(--color-ink);
  margin-bottom: var(--space-xs);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 18px;
  border: 1px solid var(--color-antique);
  background: var(--color-paper);
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-ink);
  transition: var(--transition-base);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-gold);
  box-shadow: 0 0 0 3px rgba(201, 169, 98, 0.15);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.contact-form .btn {
  margin-top: var(--space-sm);
}

/* --- Footer --- */
.footer {
  background: var(--color-ink);
  border-top: 1px solid rgba(201, 169, 98, 0.15);
  padding: var(--space-xl) 0 var(--space-lg);
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(201, 169, 98, 0.3), transparent);
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-lg);
}

@media (max-width: 768px) {
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

.footer-brand .logo-text {
  color: var(--color-gold);
  display: block;
  margin-bottom: var(--space-xs);
  font-size: 1.75rem;
  letter-spacing: 0.15em;
}

.footer-brand p {
  font-size: 0.875rem;
  color: var(--color-antique);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

@media (max-width: 768px) {
  .footer-links {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }
}

.footer-col h4 {
  font-size: 1rem;
  color: var(--color-gold);
  margin-bottom: var(--space-sm);
  font-weight: 500;
}

.footer-col a {
  display: block;
  font-size: 0.875rem;
  color: var(--color-scroll);
  margin-bottom: var(--space-xs);
  transition: var(--transition-base);
}

.footer-col a:hover {
  color: var(--color-gold);
  transform: translateX(4px);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(201, 169, 98, 0.1);
}

.footer-bottom p {
  font-size: 0.875rem;
  color: var(--color-scroll);
}

.footer-bottom .copyright {
  color: var(--color-bronze);
  margin-top: var(--space-xs);
}

/* --- Scroll Reveal Animation --- */
.scroll-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.scroll-reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Animations --- */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeIn 0.6s ease forwards;
}

/* --- Responsive Mobile Menu --- */
@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(26, 26, 26, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: var(--space-md);
    gap: var(--space-sm);
    border-bottom: 1px solid rgba(201, 169, 98, 0.2);
    display: none;
  }

  .nav-links.active {
    display: flex;
  }

  .nav-link {
    padding: var(--space-sm);
  }
}

/* --- Smooth Scrollbar --- */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-dark-bg);
}

::-webkit-scrollbar-thumb {
  background: rgba(201, 169, 98, 0.3);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(201, 169, 98, 0.5);
}

/* --- Selection --- */
::selection {
  background: rgba(201, 169, 98, 0.3);
  color: var(--color-paper);
}

/* --- Image Zoom Hint --- */
.image-zoom-hint {
  position: absolute;
  bottom: 12px;
  right: 12px;
  width: 36px;
  height: 36px;
  background: rgba(26, 26, 26, 0.8);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gold);
  opacity: 0;
  transition: var(--transition-base);
  pointer-events: none;
}

.about-image-frame:hover .image-zoom-hint {
  opacity: 1;
}

/* --- Lightbox --- */
.lightbox-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.95);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.lightbox-overlay.active {
  opacity: 1;
  visibility: visible;
}

.lightbox-content {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  transform: scale(0.9);
  transition: transform 0.3s ease;
}

.lightbox-overlay.active .lightbox-content {
  transform: scale(1);
}

.lightbox-content img {
  max-width: 100%;
  max-height: 80vh;
  object-fit: contain;
  border: 3px solid var(--color-gold);
  box-shadow: 0 0 60px rgba(201, 169, 98, 0.3);
}

.lightbox-caption {
  margin-top: var(--space-md);
  font-family: var(--font-calligraphy);
  font-size: 1.25rem;
  color: var(--color-gold);
  text-align: center;
  letter-spacing: 0.1em;
}

.lightbox-close {
  position: absolute;
  top: -50px;
  right: 0;
  background: transparent;
  border: 1px solid var(--color-gold);
  color: var(--color-gold);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-base);
}

.lightbox-close:hover {
  background: var(--color-gold);
  color: var(--color-ink);
  transform: rotate(90deg);
}

@media (max-width: 768px) {
  .lightbox-content img {
    max-height: 70vh;
  }

  .lightbox-close {
    top: -44px;
    right: 50%;
    transform: translateX(50%);
  }

  .lightbox-close:hover {
    transform: translateX(50%) rotate(90deg);
  }
}