/* 
   蛋蛋分享库 (Dandan Share) - 现代 App-Store 资源库风格设计 (Premium Light)
   Theme colors based on Logo: Lime Green (#96dc6e), Accent Yellow (#fae63c), Soft Blue (#96befa)
*/

:root {
  --primary: #96dc6e;
  --primary-dark: #2d6213; /* For high-contrast typography */
  --primary-hover: #8ad161;
  --primary-glow: rgba(150, 220, 110, 0.35);
  
  --secondary: #fae63c;
  --secondary-dark: #8c7e00;
  
  --accent-blue: #96befa;
  --accent-blue-dark: #1b4f9d;
  
  --bg-dark: #f8fafc; /* Crisp slate-white */
  --bg-card: #ffffff; /* Pure white cards */
  --border-neutral: #e2e8f0;
  
  --text-primary: #0f172a; /* Slate 900 */
  --text-secondary: #334155; /* Slate 700 */
  --text-muted: #64748b; /* Slate 500 */
  
  --font-family: 'Outfit', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --container-width: 1200px;
  
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 20px -2px rgba(15, 23, 42, 0.05), 0 2px 6px -1px rgba(15, 23, 42, 0.02);
  --shadow-lg: 0 10px 30px -4px rgba(15, 23, 42, 0.06), 0 4px 10px -2px rgba(15, 23, 42, 0.03);
}

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

html {
  font-family: var(--font-family);
  background-color: var(--bg-dark);
  color: var(--text-primary);
  scroll-behavior: smooth;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body {
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
  padding-top: 76px;
  background-color: var(--bg-dark);
  /* Brand-themed green dot-grid pattern */
  background-image: radial-gradient(rgba(150, 220, 110, 0.1) 1.2px, transparent 1.2px);
  background-size: 20px 20px;
}

@supports (content-visibility: auto) {
  .deferred-render {
    content-visibility: auto;
    contain-intrinsic-size: 900px;
  }
}

/* Floating blur shapes in background */
.mesh-blob-1 {
  position: absolute;
  top: -100px;
  left: 10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(150, 220, 110, 0.15) 0%, rgba(150, 220, 110, 0) 70%);
  z-index: -1;
  pointer-events: none;
}

.mesh-blob-2 {
  position: absolute;
  top: 500px;
  right: -200px;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(150, 190, 250, 0.1) 0%, rgba(150, 190, 250, 0) 70%);
  z-index: -1;
  pointer-events: none;
}

/* Hidden SEO header */
.seo-h1 {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* Layout container */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Site Header */
header.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background-color: rgba(248, 250, 252, 0.8);
  border-bottom: 1px solid var(--border-neutral);
  height: 76px;
  display: flex;
  align-items: center;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.5px;
}

.logo-img {
  width: 32px;
  height: 32px;
  object-fit: contain;
  border-radius: 6px;
}

.logo-text {
  color: var(--text-primary);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: 28px;
  align-items: center;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  transition: var(--transition);
  padding: 6px 0;
  position: relative;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 3px;
  background-color: var(--primary-dark);
  border-radius: 99px;
  transition: var(--transition);
}

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

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

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

.btn-nav-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: var(--text-primary);
  color: #ffffff;
  font-weight: 700;
  font-size: 0.85rem;
  padding: 10px 18px;
  border-radius: 99px;
  text-decoration: none;
  transition: var(--transition);
}

.btn-nav-download:hover {
  background-color: var(--primary-dark);
  transform: translateY(-1px);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
}

/* Hero Search Area */
.hero-search-area {
  padding: 80px 0 40px 0;
}

.hero-split-container {
  display: flex;
  align-items: center;
  gap: 60px;
  text-align: left;
}

.hero-left-logo {
  flex: 0 0 200px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-logo-img {
  width: 200px;
  height: 200px;
  object-fit: contain;
  border-radius: 44px;
  box-shadow: var(--shadow-lg);
  background: #ffffff;
  padding: 12px;
  border: 1px solid var(--border-neutral);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hero-logo-img:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

.hero-right-content {
  flex: 1;
}

.hero-search-title {
  font-size: 2.8rem;
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: -1.5px;
  color: var(--text-primary);
}

.hero-search-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 780px;
  margin: 0 0 28px 0;
  line-height: 1.6;
}

.hero-right-content .search-bar-wrapper {
  margin: 0 0 20px 0;
}

.hero-right-content .search-meta-hints {
  justify-content: flex-start;
}

/* Big Search Bar */
.search-bar-wrapper {
  max-width: 620px;
  margin: 0 auto 24px auto;
  position: relative;
  box-shadow: var(--shadow-lg);
  border-radius: 16px;
}

.search-input {
  width: 100%;
  padding: 18px 24px 18px 56px;
  font-size: 1.05rem;
  border: 1.5px solid var(--border-neutral);
  border-radius: 16px;
  background: #ffffff;
  color: var(--text-primary);
  outline: none;
  transition: var(--transition);
}

.search-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-glow);
}

.search-icon-svg {
  position: absolute;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.search-meta-hints {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  justify-content: center;
  gap: 16px;
}

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

/* App Directory Section (The showcase) */
.directory-section {
  padding: 20px 0 60px 0;
}

.directory-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-neutral);
  padding-bottom: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 16px;
}

/* Category Filter Tabs */
.category-tabs {
  display: flex;
  gap: 8px;
  list-style: none;
}

.tab-btn {
  background: #ffffff;
  border: 1px solid var(--border-neutral);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 700;
  padding: 8px 16px;
  border-radius: 99px;
  cursor: pointer;
  transition: var(--transition);
}

.tab-btn:hover {
  background: #f1f5f9;
  color: var(--text-primary);
}

.tab-btn.active {
  background: var(--text-primary);
  border-color: var(--text-primary);
  color: #ffffff;
}

.directory-stats-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 700;
}

/* App Grid */
.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 24px;
}

/* App Card styling */
.app-card {
  background: var(--bg-card);
  border: 1.5px solid var(--border-neutral);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.app-card:hover {
  transform: translateY(-3px);
  border-color: var(--primary);
  box-shadow: var(--shadow-lg), 0 0 15px rgba(150, 220, 110, 0.2);
}

.app-card-top {
  display: flex;
  gap: 14px;
  margin-bottom: 16px;
}

/* Gradient background icon frames */
.app-icon-container {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
  color: #ffffff;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
}

.icon-purple { background: linear-gradient(135deg, #a855f7, #6366f1); }
.icon-orange { background: linear-gradient(135deg, #f97316, #eab308); }
.icon-red { background: linear-gradient(135deg, #ef4444, #f97316); }
.icon-blue { background: linear-gradient(135deg, #3b82f6, #06b6d4); }
.icon-green { background: linear-gradient(135deg, #10b981, #84cc16); }
.icon-indigo { background: linear-gradient(135deg, #6366f1, #ec4899); }

.app-info-meta {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.app-title-h4 {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 4px;
  line-height: 1.2;
}

.app-category-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary-dark);
  background: rgba(150, 220, 110, 0.15);
  padding: 2px 8px;
  border-radius: 4px;
  align-self: flex-start;
}

.app-card-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 16px;
  flex-grow: 1;
}

.app-card-specs {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-neutral);
  padding-top: 14px;
  margin-bottom: 18px;
}

.app-card-specs > span {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.spec-badge {
  background: #f1f5f9;
  padding: 2px 8px;
  border-radius: 6px;
  font-weight: 600;
  color: var(--text-secondary);
}

.app-download-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: #f1f5f9;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 800;
  padding: 8px 0;
  border-radius: 8px;
  transition: var(--transition);
}

.app-card:hover .app-download-btn {
  background: var(--text-primary);
  color: #ffffff;
}

.app-download-btn:hover {
  background: var(--primary-dark) !important;
  color: #ffffff !important;
}

/* Empty search state box */
.empty-search-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 40px;
  background: #ffffff;
  border: 1.5px solid var(--border-neutral);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  display: none;
}

.empty-search-state svg {
  color: var(--text-muted);
  margin-bottom: 16px;
}

.empty-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.empty-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* Bento Features Section styling */
.features-section {
  padding: 80px 0;
}

.section-title-area {
  text-align: center;
  margin-bottom: 48px;
}

.section-label {
  color: var(--primary-dark);
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 1.5px;
  display: inline-block;
  background: rgba(150, 220, 110, 0.15);
  padding: 4px 12px;
  border-radius: 6px;
  margin-bottom: 14px;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 900;
  letter-spacing: -1px;
  color: var(--text-primary);
}

.section-subtitle-sub {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 10px auto 0 auto;
}

/* Bento Grid */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.bento-card {
  background: var(--bg-card);
  border: 1.5px solid var(--border-neutral);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 240px;
}

.bento-card:hover {
  transform: translateY(-2px);
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.section-inline-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 18px;
  color: var(--primary-dark);
  font-size: 0.95rem;
  font-weight: 800;
  text-decoration: none;
  transition: var(--transition);
}

.section-inline-link:hover {
  color: var(--text-primary);
  transform: translateY(-1px);
}

.bento-icon {
  width: 44px;
  height: 44px;
  background: #f1f5f9;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.bento-card-title {
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.bento-card-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Tutorial Box styling */
.tutorial-section {
  padding: 80px 0;
  background: #ffffff;
  border-top: 1px solid var(--border-neutral);
  border-bottom: 1px solid var(--border-neutral);
}

.tutorial-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

.tutorial-card {
  background: var(--bg-dark);
  border: 1.5px solid var(--border-neutral);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-sm);
}

.step-item {
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
}

.step-item:last-child {
  margin-bottom: 0;
}

.step-number {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--text-primary);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  flex-shrink: 0;
}

.step-text h5 {
  font-size: 1rem;
  font-weight: 800;
  margin-bottom: 4px;
}

.step-text p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* Timeline */
.timeline-section {
  padding: 80px 0;
}

.timeline-container {
  max-width: 780px;
  margin: 0 auto;
  position: relative;
}

.timeline-container::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 21px;
  width: 2px;
  background: var(--border-neutral);
}

.timeline-item {
  position: relative;
  padding-left: 60px;
  margin-bottom: 40px;
}

.timeline-dot {
  position: absolute;
  left: 13px;
  top: 4px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #ffffff;
  border: 3.5px solid var(--primary-dark);
  z-index: 2;
}

.timeline-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.timeline-date {
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--text-primary);
  background: #f1f5f9;
  padding: 2px 8px;
  border-radius: 4px;
}

.timeline-version {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-primary);
}

.timeline-content {
  background: var(--bg-card);
  border: 1.5px solid var(--border-neutral);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}

.timeline-list {
  list-style: none;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.timeline-list li {
  margin-bottom: 6px;
  padding-left: 16px;
  position: relative;
}

.timeline-list li::before {
  content: "→";
  color: var(--primary-dark);
  font-weight: bold;
  position: absolute;
  left: 0;
}

/* FAQ Section */
.faq-section {
  padding: 80px 0;
  background: #ffffff;
  border-top: 1px solid var(--border-neutral);
}

.faq-container {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border-neutral);
  padding: 20px 0;
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-question:hover {
  color: var(--primary-dark);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
}

.faq-answer p {
  padding-top: 10px;
}

.faq-arrow {
  transition: transform 0.25s ease;
  color: var(--text-muted);
}

.faq-item.active .faq-arrow {
  transform: rotate(180deg);
  color: var(--primary-dark);
}

.faq-item.active .faq-answer {
  max-height: 400px;
}

/* CTA Section Split Layout */
.cta-section {
  padding: 100px 0;
  background: linear-gradient(180deg, #ffffff 0%, var(--bg-body) 100%);
  border-top: 1px solid var(--border-neutral);
}

.cta-split-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 80px;
}

.cta-left-content {
  flex: 1;
  text-align: left;
}

.cta-badge {
  color: var(--primary-dark);
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 1.5px;
  display: inline-block;
  background: rgba(150, 220, 110, 0.15);
  padding: 4px 12px;
  border-radius: 6px;
  margin-bottom: 18px;
}

.cta-title {
  font-size: 2.6rem;
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: 16px;
  letter-spacing: -1px;
  color: var(--text-primary);
}

.cta-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 24px;
}

.cta-features {
  list-style: none;
  padding: 0;
  margin: 0 0 32px 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.cta-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 600;
}

.cta-features li svg {
  color: var(--primary-dark);
  flex-shrink: 0;
}

.cta-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
}

.btn-primary-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: var(--text-primary);
  color: #ffffff;
  font-size: 1rem;
  font-weight: 800;
  padding: 14px 32px;
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: var(--transition);
  border: 1.5px solid var(--text-primary);
}

.btn-primary-download:hover {
  background-color: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px var(--primary-glow);
}

.download-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 600;
}

.meta-divider {
  color: var(--border-neutral);
}

.cta-right-visual {
  flex: 0 0 320px;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* QR Download Card */
.qr-download-card {
  background: #ffffff;
  border: 1.5px solid var(--border-neutral);
  border-radius: 20px;
  padding: 24px;
  box-shadow: var(--shadow-md);
  text-align: center;
  width: 220px;
}

.qr-wrapper {
  background: #ffffff;
  padding: 12px;
  border: 1px solid var(--border-neutral);
  border-radius: 12px;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.qr-text {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 700;
  margin: 0;
}

/* User Reviews Section */
.reviews-section {
  padding: 80px 0;
  background: var(--bg-body);
  border-top: 1px solid var(--border-neutral);
}

.reviews-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 40px;
}

.review-item {
  background: #ffffff;
  border: 1.5px solid var(--border-neutral);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  gap: 28px;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  text-align: left;
  align-items: flex-start;
}

.review-item:hover {
  transform: translateY(-2px);
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.review-meta-col {
  flex: 0 0 220px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.review-avatar-placeholder {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(150, 220, 110, 0.2);
  color: var(--primary-dark);
  font-weight: 800;
  font-size: 1.05rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.review-user-detail {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.review-username {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.2;
}

.review-user-device {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.2;
}

.review-content-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.review-rating-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.review-stars {
  color: #fbbf24;
  font-size: 0.9rem;
}

.review-date {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.review-content {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin: 0;
}

.review-content strong {
  color: var(--text-primary);
  font-weight: 700;
}

/* Subpage Styles */
.page-hero {
  padding: 60px 0 36px 0;
  border-bottom: 1px solid var(--border-neutral);
  margin-bottom: 36px;
}

.page-title {
  font-size: 2.5rem;
  font-weight: 900;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.page-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 800px;
}

.content-grid {
  display: grid;
  grid-template-columns: 3fr 1fr;
  gap: 36px;
  margin-bottom: 60px;
}

.article-body {
  background: var(--bg-card);
  border: 1.5px solid var(--border-neutral);
  border-radius: var(--radius-lg);
  padding: 30px;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--text-secondary);
  box-shadow: var(--shadow-sm);
}

.article-body h2 {
  font-size: 1.45rem;
  font-weight: 850;
  color: var(--text-primary);
  margin: 28px 0 14px 0;
  position: relative;
  padding-left: 14px;
}

.article-body h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 4px;
  background-color: var(--primary-dark);
  border-radius: 4px;
}

.sidebar-panel {
  background: var(--bg-card);
  border: 1.5px solid var(--border-neutral);
  border-radius: var(--radius-lg);
  padding: 24px;
  align-self: start;
  box-shadow: var(--shadow-sm);
}

.sidebar-title {
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-neutral);
  color: var(--text-primary);
}

.sidebar-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sidebar-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 8px;
}

.sidebar-links a:hover {
  color: var(--primary-dark);
}

.quick-meta-list {
  list-style: none;
  font-size: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.quick-meta-list li {
  display: flex;
  justify-content: space-between;
}

.quick-meta-list .label {
  color: var(--text-muted);
}

.quick-meta-list .val {
  color: var(--text-primary);
  font-weight: 700;
}

/* Footer Section */
footer.site-footer {
  background-color: #ffffff;
  border-top: 1px solid var(--border-neutral);
  padding: 50px 0 24px 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 30px;
  margin-bottom: 30px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-brand-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 800;
  font-size: 1.15rem;
}

.footer-brand-logo img {
  width: 28px;
  height: 28px;
  object-fit: contain;
}

.footer-desc {
  font-size: 0.825rem;
  line-height: 1.55;
  color: var(--text-muted);
}

.footer-title {
  color: var(--text-primary);
  font-weight: 800;
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition);
  font-size: 0.825rem;
  font-weight: 600;
}

.footer-links a:hover {
  color: var(--primary-dark);
}

.footer-bottom {
  border-top: 1px solid var(--border-neutral);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

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

.beian-link {
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition);
  font-size: 0.8rem;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.beian-link:hover {
  color: var(--primary-dark);
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(15, 23, 42, 0.25);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-box {
  background: #ffffff;
  border: 1.5px solid var(--border-neutral);
  border-radius: var(--radius-lg);
  width: 90%;
  max-width: 580px;
  max-height: 85vh;
  overflow-y: auto;
  padding: 28px;
  position: relative;
  box-shadow: var(--shadow-lg);
  transform: scale(0.95);
  transition: var(--transition);
}

.modal-overlay.active .modal-box {
  transform: scale(1);
  border-color: var(--primary);
}

.modal-close {
  position: absolute;
  top: 18px;
  right: 18px;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 6px;
}

.modal-close:hover {
  color: var(--text-primary);
}

.modal-title {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 16px;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-neutral);
  padding-bottom: 10px;
}

.modal-content {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

.modal-content p {
  margin-bottom: 12px;
}

/* About Page Specific Styles */
.about-brand-grid {
  display: grid;
  grid-template-columns: 1.2fr 1.1fr;
  gap: 30px;
  margin-bottom: 40px;
}

.brand-story-card {
  background: var(--bg-card);
  border: 1.5px solid var(--border-neutral);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.brand-stats-bento {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.brand-stat-box {
  background: #ffffff;
  border: 1.5px solid var(--border-neutral);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.brand-stat-box:hover {
  transform: translateY(-2px);
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.brand-stat-val {
  font-size: 2rem;
  font-weight: 900;
  color: var(--primary-dark);
  line-height: 1.2;
  margin-bottom: 6px;
}

.brand-stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 700;
}

.about-credos-section {
  margin: 50px 0;
}

.credos-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 30px;
}

.credo-card {
  background: #ffffff;
  border: 1.5px solid var(--border-neutral);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.credo-card:hover {
  transform: translateY(-2px);
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.credo-icon-area {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(150, 220, 110, 0.15);
  color: var(--primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.credo-title {
  font-size: 1.15rem;
  font-weight: 850;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.credo-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.about-contact-section {
  background: #ffffff;
  border: 1.5px solid var(--border-neutral);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 60px;
}

.contact-split {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 50px;
  align-items: center;
}

.contact-channels {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.contact-channel-card {
  border: 1.5px solid var(--border-neutral);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: var(--bg-card);
  transition: var(--transition);
}

.contact-channel-card:hover {
  border-color: var(--primary);
  background: #ffffff;
}

.contact-channel-title {
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--text-muted);
}

.contact-channel-val {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
}


/* Guide Page Specific Styles */
.guide-tabs {
  display: flex;
  gap: 12px;
  margin-bottom: 40px;
  justify-content: center;
  border-bottom: 1.5px solid var(--border-neutral);
  padding-bottom: 16px;
}

.guide-tab-btn {
  background: none;
  border: none;
  padding: 8px 18px;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-secondary);
  border-radius: 20px;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.guide-tab-btn.active, .guide-tab-btn:hover {
  background: var(--primary);
  color: var(--text-primary);
}

.guide-visual-dashboard {
  background: #ffffff;
  border: 1.5px solid var(--border-neutral);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-sm);
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  align-items: center;
  margin-bottom: 50px;
}

.dashboard-mockup {
  border: 6px solid var(--text-primary);
  border-radius: 28px;
  width: 230px;
  height: 380px;
  margin: 0 auto;
  background: #0f172a;
  padding: 24px 16px;
  box-shadow: var(--shadow-lg);
  color: #ffffff;
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: relative;
}

.dashboard-mockup::before {
  content: "";
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 50px;
  height: 12px;
  background: var(--text-primary);
  border-radius: 6px;
}

.mock-status-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.4);
  margin-top: 4px;
}

.mock-gauge-area {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  height: 120px;
  margin: 10px 0;
}

.mock-circle-gauge {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  border: 8px solid rgba(255, 255, 255, 0.05);
  border-top-color: var(--primary-dark);
  border-right-color: var(--primary-dark);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  transform: rotate(-45deg);
}

.mock-gauge-info {
  transform: rotate(45deg);
  text-align: center;
}

.mock-gauge-val {
  font-size: 1.4rem;
  font-weight: 900;
  color: #ffffff;
  line-height: 1.1;
}

.mock-gauge-label {
  font-size: 0.6rem;
  color: var(--primary-dark);
  font-weight: bold;
}

.mock-ram-section {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.mock-ram-title {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.7);
}

.mock-progress-bg {
  height: 8px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  overflow: hidden;
}

.mock-progress-fill {
  width: 62%;
  height: 100%;
  background: var(--primary-dark);
  border-radius: 4px;
}

.mock-device-info {
  background: rgba(255, 255, 255, 0.03);
  border-radius: 12px;
  padding: 12px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  font-size: 0.65rem;
  color: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.mock-info-item span {
  display: block;
}

.mock-info-item .val {
  color: #ffffff;
  font-weight: bold;
}

.guide-step-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 50px;
}

.guide-step-card {
  background: var(--bg-card);
  border: 1.5px solid var(--border-neutral);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-sm);
  display: flex;
  gap: 20px;
}

.step-card-num {
  font-size: 2.2rem;
  font-weight: 900;
  color: rgba(150, 220, 110, 0.4);
  line-height: 1;
}

.step-card-info h3 {
  font-size: 1.15rem;
  font-weight: 850;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.step-card-info p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.guide-faq-accordion {
  margin-bottom: 60px;
}


/* Version Page Specific Styles */
.version-metric-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}

.version-metric-card {
  background: var(--bg-card);
  border: 1.5px solid var(--border-neutral);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.version-metric-num {
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.version-metric-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 700;
}

.version-timeline {
  position: relative;
  max-width: 860px;
  margin: 0 auto 60px auto;
  padding-left: 40px;
}

.version-timeline::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 11px;
  width: 2px;
  background: var(--border-neutral);
}

.version-timeline-item {
  position: relative;
  margin-bottom: 40px;
}

.version-timeline-item:last-child {
  margin-bottom: 0;
}

.version-timeline-dot {
  position: absolute;
  left: -35px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #ffffff;
  border: 3px solid var(--primary-dark);
  z-index: 2;
  box-shadow: 0 0 0 4px rgba(150, 220, 110, 0.15);
}

.version-timeline-item:first-child .version-timeline-dot {
  background: var(--primary-dark);
  box-shadow: 0 0 0 6px rgba(150, 220, 110, 0.25);
  width: 14px;
  height: 14px;
  left: -36px;
}

.version-card {
  background: #ffffff;
  border: 1.5px solid var(--border-neutral);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.version-card:hover {
  transform: translateY(-2px);
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.version-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-neutral);
  padding-bottom: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}

.version-card-title {
  font-size: 1.35rem;
  font-weight: 850;
  color: var(--text-primary);
  margin: 0;
}

.version-badge {
  font-size: 0.75rem;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: 12px;
}

.version-badge.latest {
  background: rgba(150, 220, 110, 0.2);
  color: var(--primary-dark);
}

.version-badge.stable {
  background: #f1f5f9;
  color: var(--text-secondary);
}

.version-badge.initial {
  background: rgba(250, 230, 60, 0.15);
  color: #a16207;
}

.version-card-meta {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  display: flex;
  gap: 14px;
}

.version-updates-list {
  list-style: none;
  font-size: 0.9rem;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.version-updates-list li {
  position: relative;
  padding-left: 18px;
  line-height: 1.55;
}

.version-updates-list li::before {
  content: "✦";
  color: var(--primary-dark);
  position: absolute;
  left: 0;
  font-size: 0.8rem;
}


/* Milestones Page Specific Styles */
.milestones-header {
  text-align: center;
  margin-bottom: 50px;
}

.milestone-cards-flow {
  display: flex;
  flex-direction: column;
  gap: 30px;
  margin-bottom: 60px;
  position: relative;
}

.milestone-flow-item {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 30px;
  align-items: start;
}

.milestone-time-badge {
  background: var(--bg-card);
  border: 1.5px solid var(--border-neutral);
  border-radius: var(--radius-md);
  padding: 12px 20px;
  text-align: center;
  font-weight: 800;
  color: var(--text-primary);
  font-size: 1.05rem;
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 100px;
}

.milestone-content-card {
  background: #ffffff;
  border: 1.5px solid var(--border-neutral);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.milestone-content-card:hover {
  transform: translateY(-2px);
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.milestone-card-title {
  font-size: 1.25rem;
  font-weight: 850;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.milestone-card-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.milestone-card-points {
  margin-top: 16px;
  list-style: none;
  font-size: 0.85rem;
  color: var(--text-muted);
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.milestone-card-points li {
  display: flex;
  align-items: center;
  gap: 6px;
}

.milestone-card-points li::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--primary-dark);
  flex-shrink: 0;
}

/* Responsive styles */
@media (max-width: 1024px) {
  .bento-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .app-directory-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  header.site-header {
    box-sizing: border-box;
  }

  .directory-section {
    padding: 20px 16px 60px;
  }

  .menu-toggle {
    display: block;
    z-index: 101;
  }
  
  .main-nav {
    position: fixed;
    top: 0;
    right: 0;
    width: 260px;
    max-width: calc(100vw - 24px);
    height: 100vh;
    background-color: #ffffff;
    border-left: 1px solid var(--border-neutral);
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    padding: 90px 24px 24px 24px;
    gap: 32px;
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.05);
    transform: translateX(calc(100% + 24px));
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  }
  
  .main-nav.active {
    transform: translateX(0);
  }
  
  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
  }
  
  .nav-link {
    font-size: 1.05rem;
    width: 100%;
    display: block;
  }
  
  .hero-split-container {
    flex-direction: column;
    text-align: center;
    gap: 32px;
  }

  .hero-left-logo {
    flex: 0 0 auto;
  }

  .hero-logo-img {
    width: 140px;
    height: 140px;
    border-radius: 32px;
  }

  .hero-search-title {
    font-size: 2.2rem;
    text-align: center;
  }
  
  .hero-search-desc {
    font-size: 1rem;
    text-align: center;
    margin: 0 auto 24px auto;
  }

  .hero-right-content .search-bar-wrapper {
    margin: 0 auto 20px auto;
  }

  .hero-right-content .search-meta-hints {
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
  }

  .hero-right-content .search-meta-hints span {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
  }
  
  .bento-grid {
    grid-template-columns: 1fr;
  }

  .tutorial-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  
  .content-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-top {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .cta-split-container {
    flex-direction: column;
    text-align: center;
    gap: 40px;
  }

  .cta-left-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .cta-title {
    font-size: 2.2rem;
    text-align: center;
  }

  .cta-features {
    align-items: flex-start;
    margin: 0 auto 28px auto;
  }

  .cta-actions {
    align-items: center;
  }

  .cta-right-visual {
    flex: 0 0 auto;
    margin-top: 10px;
  }

  .review-item {
    flex-direction: column;
    gap: 16px;
    padding: 16px;
  }
  .review-meta-col {
    flex: 0 0 auto;
    width: 100%;
  }

  /* About Subpage Responsive */
  .about-brand-grid {
    grid-template-columns: 1fr;
  }
  .brand-stats-bento {
    grid-template-columns: 1fr;
  }
  .credos-grid {
    grid-template-columns: 1fr;
  }
  .contact-split {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .contact-channels {
    grid-template-columns: 1fr;
  }

  /* Guide Subpage Responsive */
  .guide-visual-dashboard {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .guide-step-grid {
    grid-template-columns: 1fr;
  }

  /* Version Subpage Responsive */
  .version-metric-row {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .version-timeline {
    padding-left: 24px;
  }
  .version-timeline::before {
    left: 5px;
  }
  .version-timeline-dot {
    left: -24px;
  }
  .version-timeline-item:first-child .version-timeline-dot {
    left: -25px;
  }

  /* Milestones Subpage Responsive */
  .milestone-flow-item {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .milestone-time-badge {
    position: relative;
    top: 0;
    text-align: left;
    width: fit-content;
    padding: 8px 16px;
  }
  .milestone-card-points {
    grid-template-columns: 1fr;
  }
}