/* ============================================
   九色视频 - 棱镜光谱风 主样式表
   Design: Prismatic Spectrum Style
   Prefix: js-
   ============================================ */

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

:root {
  --js-white: #FFFFFF;
  --js-bg: #FAFBFF;
  --js-text-primary: #1a1a2e;
  --js-text-secondary: #4a4a6a;
  --js-text-muted: #7a7a9a;
  --js-border: rgba(0,0,0,0.06);
  --js-glass-bg: rgba(255,255,255,0.72);
  --js-glass-border: rgba(255,255,255,0.4);
  --js-shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
  --js-shadow-md: 0 4px 20px rgba(0,0,0,0.06);
  --js-shadow-lg: 0 8px 40px rgba(0,0,0,0.08);
  --js-gradient-spectrum: linear-gradient(90deg, #ff0000, #ff7700, #ffdd00, #00cc44, #0088ff, #6600cc, #cc00aa);
  --js-gradient-soft: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --js-radius-sm: 8px;
  --js-radius-md: 12px;
  --js-radius-lg: 20px;
  --js-radius-xl: 28px;
  --js-transition: 0.3s cubic-bezier(0.23, 1, 0.32, 1);
  --js-font-display: 'HarmonyOS Sans', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --js-font-body: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--js-font-body);
  color: var(--js-text-primary);
  background: var(--js-bg);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--js-transition);
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--js-font-display);
  font-weight: 700;
  line-height: 1.3;
}

/* ============================================
   Navigation
   ============================================ */
.js-navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 1rem 2rem;
  background: var(--js-glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--js-glass-border);
  transition: all var(--js-transition);
}

.js-navbar.js-scrolled {
  background: rgba(255,255,255,0.98);
  box-shadow: var(--js-shadow-sm);
}

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

.js-nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--js-font-display);
  font-size: 1.4rem;
  font-weight: 700;
  background: var(--js-gradient-spectrum);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.js-nav-logo img {
  width: 36px;
  height: 36px;
}

.js-nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.js-nav-link {
  position: relative;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--js-text-secondary);
  padding: 0.4rem 0;
  transition: color var(--js-transition);
}

.js-nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--js-gradient-spectrum);
  border-radius: 2px;
  transition: width var(--js-transition), left var(--js-transition);
}

.js-nav-link:hover {
  color: var(--js-text-primary);
}

.js-nav-link:hover::after {
  width: 100%;
  left: 0;
}

.js-nav-link.js-active {
  color: var(--js-text-primary);
}

.js-nav-link.js-active::after {
  width: 100%;
  left: 0;
}

/* Mobile Menu */
.js-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}

.js-hamburger span {
  width: 24px;
  height: 2px;
  background: var(--js-text-primary);
  border-radius: 2px;
  transition: all var(--js-transition);
}

.js-mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: linear-gradient(135deg, rgba(255,0,0,0.9), rgba(255,119,0,0.9), rgba(255,221,0,0.9), rgba(0,204,68,0.9), rgba(0,136,255,0.9), rgba(102,0,204,0.9));
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.js-mobile-menu.js-open {
  display: flex;
  opacity: 1;
}

.js-mobile-menu a {
  color: #fff;
  font-size: 1.5rem;
  font-weight: 600;
  text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

/* ============================================
   Hero Section
   ============================================ */
.js-hero-section {
  position: relative;
  width: 100%;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #000;
}

.js-hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.7;
}

.js-hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, rgba(0,0,0,0.3) 0%, rgba(0,0,0,0.5) 100%);
}

.js-hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: #fff;
  padding: 2rem;
}

.js-hero-logo {
  width: 120px;
  height: 120px;
  margin: 0 auto 2rem;
  animation: js-prism-rotate 8s linear infinite;
}

@keyframes js-prism-rotate {
  0% { transform: rotate(0deg); filter: hue-rotate(0deg); }
  100% { transform: rotate(360deg); filter: hue-rotate(360deg); }
}

.js-hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
  text-shadow: 0 4px 20px rgba(0,0,0,0.4);
}

.js-hero-subtitle {
  font-size: 1.2rem;
  opacity: 0.9;
  margin-bottom: 2.5rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.js-hero-btn {
  display: inline-block;
  padding: 1rem 2.5rem;
  background: var(--js-gradient-spectrum);
  color: #fff;
  font-weight: 600;
  font-size: 1rem;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.3s ease;
  box-shadow: 0 4px 20px rgba(102,0,204,0.3);
}

.js-hero-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 30px rgba(102,0,204,0.4);
}

.js-hero-btn:active {
  transform: scale(0.97);
}

/* ============================================
   Section Common
   ============================================ */
.js-section {
  padding: 5rem 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.js-section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.js-section-title {
  font-size: 2.2rem;
  margin-bottom: 0.8rem;
  background: var(--js-gradient-spectrum);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.js-section-desc {
  font-size: 1rem;
  color: var(--js-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ============================================
   Glass Card
   ============================================ */
.js-glass-card {
  background: var(--js-glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--js-glass-border);
  border-radius: var(--js-radius-lg);
  padding: 1.5rem;
  box-shadow: var(--js-shadow-md);
  transition: transform var(--js-transition), box-shadow var(--js-transition);
}

.js-glass-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--js-shadow-lg);
}

/* ============================================
   Horizontal Scroll (Featured Topics)
   ============================================ */
.js-scroll-container {
  display: flex;
  gap: 1.5rem;
  overflow-x: auto;
  padding: 1rem 0 2rem;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.js-scroll-container::-webkit-scrollbar {
  display: none;
}

.js-scroll-item {
  flex: 0 0 300px;
  scroll-snap-align: start;
}

/* ============================================
   Grid Layouts
   ============================================ */
.js-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.js-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.js-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

/* ============================================
   Card Styles
   ============================================ */
.js-topic-card {
  position: relative;
  border-radius: var(--js-radius-lg);
  overflow: hidden;
  height: 380px;
}

.js-topic-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.js-topic-card-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.5rem;
  background: linear-gradient(transparent, rgba(0,0,0,0.8));
  color: #fff;
}

.js-topic-card-title {
  font-size: 1.2rem;
  font-weight: 600;
}

.js-topic-card-count {
  font-size: 0.85rem;
  opacity: 0.8;
  margin-top: 0.3rem;
}

/* Tutorial Card */
.js-tutorial-card {
  border-radius: var(--js-radius-lg);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--js-shadow-sm);
  transition: transform var(--js-transition), box-shadow var(--js-transition);
}

.js-tutorial-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--js-shadow-lg);
}

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

.js-tutorial-card-body {
  padding: 1.2rem;
}

.js-tutorial-card-tag {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: #fff;
  font-size: 0.75rem;
  border-radius: 20px;
  margin-bottom: 0.6rem;
}

.js-tutorial-card-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.js-tutorial-card-desc {
  font-size: 0.85rem;
  color: var(--js-text-muted);
  line-height: 1.5;
}

/* Preset Card */
.js-preset-card {
  border-radius: var(--js-radius-lg);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--js-shadow-sm);
  transition: transform var(--js-transition);
}

.js-preset-card:hover {
  transform: translateY(-3px);
}

.js-preset-preview {
  position: relative;
  height: 180px;
  overflow: hidden;
}

.js-preset-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.js-preset-badge {
  position: absolute;
  top: 0.8rem;
  right: 0.8rem;
  padding: 0.2rem 0.6rem;
  background: rgba(0,0,0,0.6);
  color: #fff;
  font-size: 0.75rem;
  border-radius: 20px;
}

.js-preset-info {
  padding: 1rem;
}

.js-preset-name {
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.js-preset-author {
  font-size: 0.8rem;
  color: var(--js-text-muted);
}

.js-preset-download {
  display: inline-block;
  margin-top: 0.6rem;
  padding: 0.4rem 1rem;
  background: var(--js-gradient-spectrum);
  color: #fff;
  font-size: 0.8rem;
  border-radius: 20px;
  font-weight: 500;
}

/* Creator Card */
.js-creator-card {
  text-align: center;
  padding: 2rem 1rem;
}

.js-creator-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 1rem;
  border: 3px solid transparent;
  background-image: var(--js-gradient-spectrum);
  background-origin: border-box;
  background-clip: content-box, border-box;
}

.js-creator-name {
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.js-creator-role {
  font-size: 0.85rem;
  color: var(--js-text-muted);
}

/* Gear Card */
.js-gear-card {
  border-radius: var(--js-radius-lg);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--js-shadow-sm);
  text-align: center;
  padding: 2rem 1.5rem;
  transition: transform var(--js-transition);
}

.js-gear-card:hover {
  transform: translateY(-4px);
}

.js-gear-card img {
  width: 100%;
  height: 160px;
  object-fit: contain;
  margin-bottom: 1rem;
}

.js-gear-card-title {
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.js-gear-card-desc {
  font-size: 0.85rem;
  color: var(--js-text-muted);
}

/* Masonry / Inspiration */
.js-masonry {
  columns: 4;
  column-gap: 1rem;
}

.js-masonry-item {
  break-inside: avoid;
  margin-bottom: 1rem;
  border-radius: var(--js-radius-md);
  overflow: hidden;
  transition: transform var(--js-transition);
}

.js-masonry-item:hover {
  transform: scale(1.02);
}

.js-masonry-item img {
  width: 100%;
  display: block;
}

/* Marketplace Card */
.js-market-card {
  border-radius: var(--js-radius-lg);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--js-shadow-sm);
  transition: transform var(--js-transition);
}

.js-market-card:hover {
  transform: translateY(-3px);
}

.js-market-card-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.js-market-card-body {
  padding: 1rem;
}

.js-market-card-title {
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.js-market-card-price {
  color: #e63946;
  font-weight: 700;
  font-size: 1.1rem;
}

/* Membership */
.js-membership-section {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  border-radius: var(--js-radius-xl);
  padding: 4rem 3rem;
  color: #fff;
  text-align: center;
  margin: 3rem auto;
  max-width: 1200px;
}

.js-membership-title {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.js-membership-features {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 2rem;
  margin: 2rem 0;
}

.js-membership-feature {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1rem;
}

.js-membership-feature::before {
  content: '✦';
  color: #ffdd00;
}

.js-membership-btn {
  display: inline-block;
  padding: 1rem 3rem;
  background: var(--js-gradient-spectrum);
  color: #fff;
  font-weight: 600;
  border-radius: 50px;
  margin-top: 1.5rem;
  transition: transform 0.2s ease;
}

.js-membership-btn:hover {
  transform: scale(1.05);
}

/* Calendar */
.js-calendar-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.js-calendar-event {
  background: #fff;
  border-radius: var(--js-radius-md);
  padding: 1.5rem;
  border-left: 4px solid;
  border-image: var(--js-gradient-spectrum) 1;
  box-shadow: var(--js-shadow-sm);
}

.js-calendar-date {
  font-size: 0.85rem;
  color: var(--js-text-muted);
  margin-bottom: 0.5rem;
}

.js-calendar-title {
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.js-calendar-desc {
  font-size: 0.85rem;
  color: var(--js-text-secondary);
}

/* ============================================
   Footer
   ============================================ */
.js-footer {
  background: #1a1a2e;
  color: rgba(255,255,255,0.8);
  padding: 4rem 2rem 2rem;
}

.js-footer-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.js-footer-brand p {
  margin-top: 1rem;
  font-size: 0.9rem;
  line-height: 1.6;
  opacity: 0.8;
}

.js-footer-social {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
}

.js-footer-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  transition: background var(--js-transition);
}

.js-footer-social a:hover {
  background: rgba(255,255,255,0.2);
}

.js-footer-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1.2rem;
  color: #fff;
}

.js-footer-links li {
  margin-bottom: 0.7rem;
}

.js-footer-links a {
  font-size: 0.9rem;
  opacity: 0.7;
  transition: opacity var(--js-transition);
}

.js-footer-links a:hover {
  opacity: 1;
}

.js-footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 2rem;
  text-align: center;
  font-size: 0.85rem;
  opacity: 0.7;
}

.js-footer-certs {
  margin-top: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.js-footer-certs a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  opacity: 0.8;
  transition: opacity var(--js-transition);
}

.js-footer-certs a:hover {
  opacity: 1;
}

.js-footer-certs img {
  width: 18px;
  height: 18px;
}

.js-footer-honor {
  margin-top: 1.2rem;
  font-size: 0.8rem;
  opacity: 0.6;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

/* ============================================
   Palette Workshop
   ============================================ */
.js-workshop-container {
  display: grid;
  grid-template-columns: 1fr 320px 280px;
  gap: 1.5rem;
  min-height: calc(100vh - 200px);
  padding: 2rem;
}

.js-workshop-preview {
  background: #000;
  border-radius: var(--js-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.js-workshop-preview canvas,
.js-workshop-preview video,
.js-workshop-preview img {
  max-width: 100%;
  max-height: 100%;
}

.js-workshop-controls {
  background: #fff;
  border-radius: var(--js-radius-lg);
  padding: 1.5rem;
  box-shadow: var(--js-shadow-md);
  overflow-y: auto;
}

.js-workshop-sidebar {
  background: #fff;
  border-radius: var(--js-radius-lg);
  padding: 1.5rem;
  box-shadow: var(--js-shadow-md);
  overflow-y: auto;
}

.js-control-group {
  margin-bottom: 1.5rem;
}

.js-control-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.js-control-slider {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  -webkit-appearance: none;
  appearance: none;
  background: linear-gradient(90deg, #ddd, #667eea);
  outline: none;
  cursor: pointer;
}

.js-control-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid #667eea;
  cursor: pointer;
}

.js-upload-zone {
  border: 2px dashed var(--js-border);
  border-radius: var(--js-radius-md);
  padding: 3rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: border-color var(--js-transition);
}

.js-upload-zone:hover {
  border-color: #667eea;
}

.js-btn-primary {
  display: inline-block;
  padding: 0.7rem 1.5rem;
  background: var(--js-gradient-spectrum);
  color: #fff;
  font-weight: 600;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  font-size: 0.9rem;
  transition: transform 0.2s ease;
}

.js-btn-primary:hover {
  transform: scale(1.03);
}

.js-btn-secondary {
  display: inline-block;
  padding: 0.7rem 1.5rem;
  background: #f0f0f5;
  color: var(--js-text-primary);
  font-weight: 500;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  font-size: 0.9rem;
  transition: background var(--js-transition);
}

.js-btn-secondary:hover {
  background: #e0e0ea;
}

/* ============================================
   APP Download Page
   ============================================ */
.js-app-hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at center, rgba(102,126,234,0.15) 0%, transparent 70%);
  padding: 6rem 2rem 4rem;
}

.js-app-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  max-width: 1200px;
  align-items: center;
}

.js-app-text h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
  background: var(--js-gradient-spectrum);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.js-app-text p {
  font-size: 1.1rem;
  color: var(--js-text-secondary);
  margin-bottom: 2rem;
}

.js-app-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 2rem;
}

.js-app-feature {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.95rem;
}

.js-app-feature-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, #667eea, #764ba2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 0.9rem;
}

.js-app-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.js-app-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.8rem 1.5rem;
  background: #1a1a2e;
  color: #fff;
  border-radius: var(--js-radius-md);
  font-size: 0.9rem;
  font-weight: 500;
  transition: transform 0.2s ease;
}

.js-app-btn:hover {
  transform: scale(1.03);
}

.js-app-mockup {
  display: flex;
  justify-content: center;
}

.js-app-mockup img {
  max-width: 320px;
  border-radius: 36px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.15);
}

/* ============================================
   Content Pages (jiuse-video, mitao-video, etc.)
   ============================================ */
.js-page-hero {
  padding: 8rem 2rem 4rem;
  text-align: center;
  background: linear-gradient(180deg, rgba(102,126,234,0.08) 0%, transparent 100%);
}

.js-page-hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  background: var(--js-gradient-spectrum);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.js-page-hero p {
  font-size: 1.1rem;
  color: var(--js-text-secondary);
  max-width: 700px;
  margin: 0 auto;
}

.js-page-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 3rem 2rem;
}

.js-page-content h2 {
  font-size: 1.6rem;
  margin: 2rem 0 1rem;
}

.js-page-content p {
  margin-bottom: 1.2rem;
  line-height: 1.8;
  color: var(--js-text-secondary);
}

.js-page-content img {
  border-radius: var(--js-radius-md);
  margin: 1.5rem 0;
  box-shadow: var(--js-shadow-sm);
}

.js-video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.js-video-card {
  border-radius: var(--js-radius-lg);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--js-shadow-sm);
  transition: transform var(--js-transition);
}

.js-video-card:hover {
  transform: translateY(-4px);
}

.js-video-thumb {
  position: relative;
  height: 180px;
  overflow: hidden;
}

.js-video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.js-video-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 48px;
  height: 48px;
  background: rgba(255,255,255,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.js-video-play::after {
  content: '';
  width: 0;
  height: 0;
  border-left: 14px solid #1a1a2e;
  border-top: 8px solid transparent;
  border-bottom: 8px solid transparent;
  margin-left: 3px;
}

.js-video-info {
  padding: 1rem;
}

.js-video-title {
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.js-video-meta {
  font-size: 0.8rem;
  color: var(--js-text-muted);
}

/* ============================================
   Responsive Design
   ============================================ */

/* Tablet: 768px - 1024px */
@media (max-width: 1024px) {
  .js-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .js-grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .js-masonry {
    columns: 3;
  }
  
  .js-workshop-container {
    grid-template-columns: 1fr;
  }
  
  .js-app-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .js-footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .js-hero-title {
    font-size: 2.5rem;
  }
}

/* Mobile: < 768px */
@media (max-width: 768px) {
  .js-nav-links {
    display: none;
  }
  
  .js-hamburger {
    display: flex;
  }
  
  .js-grid-2,
  .js-grid-3,
  .js-grid-4 {
    grid-template-columns: 1fr;
  }
  
  .js-masonry {
    columns: 2;
  }
  
  .js-section {
    padding: 3rem 1rem;
  }
  
  .js-hero-title {
    font-size: 2rem;
  }
  
  .js-hero-subtitle {
    font-size: 1rem;
  }
  
  .js-section-title {
    font-size: 1.6rem;
  }
  
  .js-footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .js-membership-section {
    padding: 3rem 1.5rem;
    margin: 2rem 1rem;
  }
  
  .js-app-features {
    grid-template-columns: 1fr;
  }
  
  .js-app-text h1 {
    font-size: 2rem;
  }
  
  .js-page-hero {
    padding: 6rem 1rem 3rem;
  }
  
  .js-page-hero h1 {
    font-size: 1.8rem;
  }
  
  .js-footer-certs {
    flex-direction: column;
    gap: 0.8rem;
  }
}

/* Large screens: > 1440px */
@media (min-width: 1440px) {
  .js-section {
    max-width: 1600px;
  }
  
  .js-hero-title {
    font-size: 4rem;
  }
  
  .js-masonry {
    columns: 5;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============================================
   Palette Workshop Styles
   ============================================ */
.js-palette-workshop {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem;
  background: var(--js-glass-bg);
  border-radius: var(--js-radius-lg);
  border: 1px solid var(--js-glass-border);
  backdrop-filter: blur(12px);
  box-shadow: var(--js-shadow-md);
}

.js-palette-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: flex-end;
  margin-bottom: 2rem;
}

.js-palette-control-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.js-palette-control-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--js-text-secondary);
}

.js-color-picker-wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.js-color-picker-wrap input[type="color"] {
  width: 48px;
  height: 36px;
  border: 2px solid var(--js-border);
  border-radius: var(--js-radius-sm);
  cursor: pointer;
  padding: 2px;
}

.js-color-picker-wrap span {
  font-family: monospace;
  font-size: 0.9rem;
  color: var(--js-text-primary);
}

.js-palette-controls select {
  padding: 0.5rem 1rem;
  border: 1px solid var(--js-border);
  border-radius: var(--js-radius-sm);
  background: white;
  font-size: 0.9rem;
  color: var(--js-text-primary);
  cursor: pointer;
}

.js-palette-btn {
  padding: 0.6rem 1.5rem;
  border: none;
  border-radius: var(--js-radius-sm);
  background: var(--js-gradient-spectrum);
  color: white;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: transform var(--js-transition), box-shadow var(--js-transition);
}

.js-palette-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(102, 0, 204, 0.3);
}

.js-palette-btn:active {
  transform: scale(0.97);
}

.js-palette-btn-secondary {
  background: var(--js-text-secondary);
}

.js-palette-result {
  display: flex;
  border-radius: var(--js-radius-md);
  overflow: hidden;
  height: 120px;
  box-shadow: var(--js-shadow-sm);
}

.js-palette-color {
  flex: 1;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding-bottom: 0.8rem;
  cursor: pointer;
  transition: flex var(--js-transition);
}

.js-palette-color:hover {
  flex: 1.5;
}

.js-palette-color span {
  font-family: monospace;
  font-size: 0.75rem;
  color: white;
  text-shadow: 0 1px 3px rgba(0,0,0,0.5);
  background: rgba(0,0,0,0.3);
  padding: 2px 6px;
  border-radius: 4px;
}

.js-palette-tip {
  text-align: center;
  margin-top: 1rem;
  font-size: 0.8rem;
  color: var(--js-text-muted);
}

/* ============================================
   Info Pages Styles
   ============================================ */
.js-info-page {
  max-width: 800px;
  margin: 0 auto;
  padding: 120px 1.5rem 4rem;
}

.js-info-page h1 {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 2rem;
  background: var(--js-gradient-spectrum);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.js-info-content {
  line-height: 1.8;
  color: var(--js-text-secondary);
}

.js-info-content h2 {
  font-size: 1.4rem;
  color: var(--js-text-primary);
  margin: 2rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid transparent;
  border-image: var(--js-gradient-spectrum) 1;
}

.js-info-content h3 {
  font-size: 1.1rem;
  color: var(--js-text-primary);
  margin: 1.5rem 0 0.5rem;
}

.js-info-content p {
  margin-bottom: 1rem;
}

.js-info-content ul {
  margin: 1rem 0;
  padding-left: 1.5rem;
}

.js-info-content ul li {
  margin-bottom: 0.5rem;
}

.js-info-content strong {
  color: var(--js-text-primary);
}

/* ============================================
   Page Hero (subpages)
   ============================================ */
.js-page-hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.js-page-hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(26,26,46,0.7), rgba(102,0,204,0.4));
}

.js-page-hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: white;
}

.js-page-hero-content h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 0.8rem;
}

.js-page-hero-content p {
  font-size: 1.1rem;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto;
}

/* ============================================
   APP Download Page Styles
   ============================================ */
.js-app-hero-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 120px 2rem 4rem;
  gap: 3rem;
}

.js-app-hero-text {
  flex: 1;
}

.js-app-hero-text h1 {
  font-size: 2.8rem;
  font-weight: 700;
  margin-bottom: 0.8rem;
  background: var(--js-gradient-spectrum);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.js-app-hero-subtitle {
  font-size: 1.2rem;
  color: var(--js-text-secondary);
  margin-bottom: 2rem;
}

.js-app-features-list {
  list-style: none;
  margin-bottom: 2rem;
}

.js-app-features-list li {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.6rem 0;
  font-size: 1rem;
  color: var(--js-text-secondary);
}

.js-app-features-list li svg {
  color: #00cc44;
  flex-shrink: 0;
}

.js-app-download-btns {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.js-app-btn {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.8rem 1.5rem;
  border-radius: var(--js-radius-md);
  text-decoration: none;
  color: white;
  background: var(--js-text-primary);
  transition: transform var(--js-transition), box-shadow var(--js-transition);
}

.js-app-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--js-shadow-lg);
}

.js-app-btn small {
  display: block;
  font-size: 0.7rem;
  opacity: 0.7;
}

.js-app-btn strong {
  display: block;
  font-size: 1rem;
}

.js-app-version {
  font-size: 0.8rem;
  color: var(--js-text-muted);
}

.js-app-hero-mockup {
  flex: 0 0 300px;
}

.js-app-mockup-img {
  width: 100%;
  height: auto;
  border-radius: var(--js-radius-lg);
  box-shadow: var(--js-shadow-lg);
}

/* ============================================
   Responsive - Additional
   ============================================ */
@media (max-width: 768px) {
  .js-app-hero-content {
    flex-direction: column;
    padding: 100px 1.5rem 3rem;
    text-align: center;
  }
  
  .js-app-hero-text h1 {
    font-size: 2rem;
  }
  
  .js-app-download-btns {
    flex-direction: column;
    align-items: center;
  }
  
  .js-app-hero-mockup {
    flex: none;
    width: 220px;
  }
  
  .js-palette-controls {
    flex-direction: column;
    align-items: stretch;
  }
  
  .js-palette-result {
    height: 80px;
  }
  
  .js-info-page {
    padding: 100px 1rem 3rem;
  }
  
  .js-info-page h1 {
    font-size: 1.6rem;
  }
}