@charset "UTF-8";
/* ==========================================================================
   Tanuyomi（たぬヨミ）- Official Landing Page Stylesheet
   Warm & Gentle Theme with Pop Navigation and Japanese Typography
   ========================================================================== */

/* --------------------------------------------------------------------------
   Design Tokens & CSS Variables (Warm, Friendly, Premium Palette)
   -------------------------------------------------------------------------- */
:root {
  /* Warm Dark Background Palette */
  --bg-base: #18151D;
  --bg-surface: #221D28;
  --bg-surface-elevated: #2C2634;
  --bg-card: rgba(38, 33, 46, 0.75);
  --bg-card-hover: rgba(48, 41, 58, 0.9);
  
  /* Primary Warm Amber / Tanuki Brown */
  --primary: #E68A3C;
  --primary-light: #F6A868;
  --primary-dark: #C77227;
  --primary-glow: rgba(230, 138, 60, 0.28);
  
  /* Accent Colors */
  --accent-red: #E84141;
  --accent-red-glow: rgba(232, 65, 65, 0.25);
  --accent-green: #34D399;
  --accent-green-glow: rgba(52, 211, 153, 0.25);
  --accent-gold: #FBBF24;
  --accent-gold-glow: rgba(251, 191, 36, 0.25);

  /* Gentle Typography Colors */
  --text-main: #FDFBFA;
  --text-muted: #D1C7BD;
  --text-subtle: #9E938B;

  /* Borders & Dividers */
  --border-subtle: rgba(255, 255, 255, 0.07);
  --border-card: rgba(255, 255, 255, 0.12);
  --border-hover: rgba(230, 138, 60, 0.4);

  /* Shadows & Glassmorphism */
  --glass-blur: blur(18px);
  --shadow-sm: 0 4px 12px rgba(12, 10, 15, 0.35);
  --shadow-md: 0 10px 30px rgba(12, 10, 15, 0.45);
  --shadow-lg: 0 20px 50px rgba(10, 8, 14, 0.6);
  --shadow-glow: 0 0 35px var(--primary-glow);

  /* Typography */
  --font-heading: 'Outfit', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Noto Sans JP', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', Consolas, monospace;

  /* Layout & Soft Radiuses */
  --container-max: 1140px;
  --header-height: 104px;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;
}

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

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

body {
  background-color: var(--bg-base);
  color: var(--text-main);
  font-family: var(--font-body);
  line-height: 1.8;
  letter-spacing: 0.03em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  word-break: normal;
  line-break: strict;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

img, svg {
  display: block;
  max-width: 100%;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* --------------------------------------------------------------------------
   Japanese Text Helpers (文節改行・読みやすさ向上)
   -------------------------------------------------------------------------- */
.phrase {
  display: inline-block;
  white-space: normal;
}

.text-nowrap {
  white-space: nowrap;
}

.text-balance {
  text-wrap: balance;
}

.text-pretty {
  text-wrap: pretty;
}

@media (max-width: 768px) {
  .br-pc {
    display: none;
  }
  .br-sp {
    display: block;
  }
}

@media (min-width: 769px) {
  .br-sp {
    display: none;
  }
  .br-pc {
    display: block;
  }
}

/* --------------------------------------------------------------------------
   Typography Utilities
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.4;
  color: var(--text-main);
  letter-spacing: 0.02em;
  text-wrap: balance;
}

.gradient-text {
  background: linear-gradient(135deg, #FFFFFF 15%, var(--primary-light) 75%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: rgba(230, 138, 60, 0.12);
  border: 1px solid rgba(230, 138, 60, 0.28);
  color: var(--primary-light);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  margin-bottom: 18px;
}

.section-title {
  font-size: clamp(1.85rem, 3.8vw, 2.5rem);
  margin-bottom: 18px;
  font-weight: 800;
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.85;
  max-width: 660px;
  margin: 0 auto 52px;
}

.text-center {
  text-align: center;
}

/* --------------------------------------------------------------------------
   Header & Pop Button-Style Navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: all 0.3s ease;
  border-bottom: 1px solid transparent;
  padding: 10px 0 8px;
}

.site-header.scrolled {
  background: rgba(24, 21, 29, 0.94);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom-color: var(--border-subtle);
  box-shadow: var(--shadow-sm);
  padding: 6px 0 6px;
}

.header-container {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.header-top-row {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  width: 100%;
  gap: 16px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  justify-self: start;
}

.header-center-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  justify-self: center;
}

.header-utility {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  justify-self: end;
}

.header-nav-row {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
}

.brand-logo img, .brand-logo svg {
  width: 38px;
  height: 38px;
  border-radius: 10px;
}

.brand-badge {
  font-size: 0.72rem;
  padding: 3px 9px;
  border-radius: var(--radius-full);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-weight: 500;
}

/* Pop Button Navigation Menu */
.nav-menu {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  list-style: none;
}

.nav-pill-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 18px;
  height: 38px;
  min-height: 38px;
  box-sizing: border-box;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-main);
  font-size: 0.88rem;
  font-weight: 600;
  line-height: 1;
  white-space: nowrap;
  transition: all 0.22s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
  backdrop-filter: var(--glass-blur);
}

.nav-pill-btn:hover {
  background: rgba(230, 138, 60, 0.16);
  border-color: rgba(230, 138, 60, 0.45);
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: 0 4px 14px var(--primary-glow);
}

.nav-pill-btn.active {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-color: var(--primary-light);
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: 0 4px 16px var(--primary-glow);
}

.pill-icon {
  font-size: 1.05rem;
  line-height: 1;
  display: inline-flex;
  align-items: center;
}

.pill-text {
  letter-spacing: 0.02em;
  line-height: 1;
}


.header-download-btn {
  height: 38px;
  min-height: 38px;
  padding: 0 20px;
  font-size: 0.88rem;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  box-sizing: border-box;
}

/* Language Switcher */
.lang-switcher {
  position: relative;
  display: inline-flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-full);
  padding: 0 10px 0 12px;
  height: 38px;
  transition: all 0.22s ease;
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

.lang-switcher:hover, .lang-switcher:focus-within {
  background: rgba(230, 138, 60, 0.14);
  border-color: rgba(230, 138, 60, 0.45);
  box-shadow: 0 2px 10px rgba(230, 138, 60, 0.2);
}

.lang-switcher-icon {
  font-size: 0.95rem;
  margin-right: 6px;
  line-height: 1;
  display: inline-block;
  user-select: none;
}

.lang-switcher-select {
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-main);
  font-family: inherit;
  font-size: 0.84rem;
  font-weight: 600;
  cursor: pointer;
  padding: 0 14px 0 0;
  color-scheme: dark;
}

.lang-switcher-select option {
  background-color: #1f1b24;
  color: #FFFFFF;
  padding: 8px 12px;
}

.lang-switcher-arrow {
  position: absolute;
  right: 10px;
  font-size: 0.65rem;
  color: var(--text-muted);
  pointer-events: none;
  transition: transform 0.2s ease;
}

.lang-switcher:focus-within .lang-switcher-arrow {
  transform: rotate(180deg);
  color: var(--primary-light);
}

/* --------------------------------------------------------------------------
   Buttons & CTAs
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 26px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #FFFFFF;
  box-shadow: 0 4px 18px var(--primary-glow);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(230, 138, 60, 0.45);
}

.btn-secondary {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-card);
  color: var(--text-main);
  backdrop-filter: var(--glass-blur);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.22);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 16px 34px;
  font-size: 1.05rem;
  border-radius: var(--radius-md);
}

.btn-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.btn-github,
.btn-cien {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-card);
  color: var(--text-main);
  border-radius: var(--radius-full);
  padding: 0 16px;
  height: 38px;
  min-height: 38px;
  box-sizing: border-box;
  font-size: 0.88rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-github:hover,
.btn-cien:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
  color: #FFFFFF;
}

.download-sub-link {
  display: inline-block;
  color: var(--primary-light);
  font-size: 0.88rem;
  font-weight: 500;
  transition: all 0.2s ease;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.download-sub-link:hover {
  color: #FFFFFF;
  text-decoration-color: var(--primary);
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero-section {
  position: relative;
  padding: calc(var(--header-height) + 50px) 0 90px;
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 880px;
  margin: 0 auto;
}

.hero-badge {
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(2.1rem, 4.8vw, 3.4rem);
  font-weight: 800;
  line-height: 1.35;
  margin-bottom: 24px;
}

.hero-description {
  color: var(--text-muted);
  font-size: clamp(1.05rem, 1.8vw, 1.2rem);
  line-height: 1.9;
  max-width: 700px;
  margin: 0 auto 38px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.hero-meta-info {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  color: var(--text-subtle);
  font-size: 0.88rem;
  flex-wrap: wrap;
}

.hero-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* Hero Showcase / Soft Mockup */
.hero-showcase {
  position: relative;
  margin-top: 60px;
  z-index: 2;
}

.showcase-window {
  background: var(--bg-surface);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg), 0 0 50px rgba(0, 0, 0, 0.5);
  overflow: hidden;
}

.window-header {
  height: 42px;
  background: #19161F;
  display: flex;
  align-items: center;
  padding: 0 18px;
  border-bottom: 1px solid var(--border-subtle);
  justify-content: space-between;
}

.window-dots {
  display: flex;
  gap: 8px;
}

.window-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.18);
}

.window-dot.red { background: #E84141; opacity: 0.85; }
.window-dot.yellow { background: #FBBF24; opacity: 0.85; }
.window-dot.green { background: #34D399; opacity: 0.85; }

.window-title {
  color: var(--text-subtle);
  font-size: 0.82rem;
  font-family: var(--font-mono);
}

.window-body {
  position: relative;
  background: #1A1522;
  overflow: hidden;
}

.window-controls {
  display: flex;
  gap: 12px;
  color: var(--text-subtle);
  font-size: 0.75rem;
  font-family: var(--font-mono);
}

.app-ui-layout {
  width: 100%;
  display: grid;
  grid-template-columns: 210px 1fr;
  min-height: 480px;
}

/* App Sidebar */
.app-sidebar {
  background: #1F1928;
  border-right: 1px solid var(--border-subtle);
  padding: 18px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-align: left;
}

.sidebar-section-title {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-subtle);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 4px 10px;
}

.sidebar-nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  transition: all 0.15s ease;
}

.sidebar-nav-item.active {
  background: rgba(230, 138, 60, 0.16);
  color: var(--primary-light);
  font-weight: 600;
}

.sb-badge {
  margin-left: auto;
  font-size: 0.7rem;
  background: rgba(255, 255, 255, 0.1);
  padding: 1px 6px;
  border-radius: 999px;
  color: var(--text-main);
}

.sidebar-bottom-status {
  margin-top: auto;
  padding: 10px;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.75rem;
  color: var(--text-subtle);
  display: flex;
  align-items: center;
  gap: 8px;
}

.status-indicator {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: 0 0 8px var(--accent-green-glow);
}

/* App Main Area */
.app-main-area {
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: #17131D;
  text-align: left;
}

.app-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-subtle);
}

.toolbar-breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-subtle);
}

.bc-item.bc-active {
  color: var(--text-main);
  font-weight: 600;
}

.toolbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mini-search-box {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 4px 12px;
  font-size: 0.78rem;
  color: var(--text-subtle);
  display: flex;
  align-items: center;
  gap: 6px;
}

.view-toggle-btns {
  display: flex;
  gap: 4px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  padding: 2px;
}

.vt-btn {
  padding: 2px 6px;
  font-size: 0.8rem;
  color: var(--text-subtle);
  border-radius: 4px;
}

.vt-btn.active {
  background: rgba(255, 255, 255, 0.12);
  color: var(--text-main);
}

/* App Cards Grid */
.app-cards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.media-mock-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, border-color 0.2s ease;
  box-shadow: var(--shadow-sm);
}

.media-mock-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-hover);
}

.card-thumb {
  aspect-ratio: 3 / 4;
  position: relative;
  display: flex;
  align-items: flex-end;
  padding: 12px;
  overflow: hidden;
}

.format-pill {
  position: absolute;
  top: 8px;
  left: 8px;
  font-size: 0.68rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  z-index: 2;
}

.format-pill.zip { background: #E68A3C; color: #FFFFFF; }
.format-pill.video { background: #E84141; color: #FFFFFF; }
.format-pill.pdf { background: #E53E3E; color: #FFFFFF; }
.format-pill.cbz { background: #34D399; color: #18151D; }

.page-count-pill {
  position: absolute;
  top: 8px;
  right: 8px;
  font-size: 0.68rem;
  background: rgba(0, 0, 0, 0.65);
  color: #FFFFFF;
  padding: 2px 6px;
  border-radius: 4px;
  font-family: var(--font-mono);
  z-index: 2;
}

.play-overlay-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 38px;
  height: 38px;
  background: rgba(0, 0, 0, 0.6);
  border: 1.5px solid rgba(255, 255, 255, 0.8);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  font-size: 0.9rem;
  padding-left: 3px;
  z-index: 2;
}

.thumb-inner-art {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 12px;
  z-index: 1;
}

.book-thumb-1 .thumb-inner-art {
  background: linear-gradient(180deg, rgba(60, 40, 80, 0.4) 0%, rgba(30, 20, 45, 0.95) 100%),
              radial-gradient(circle at 70% 30%, #E68A3C 0%, transparent 60%);
}

.video-thumb-1 .thumb-inner-art {
  background: linear-gradient(180deg, rgba(20, 30, 50, 0.4) 0%, rgba(10, 15, 30, 0.95) 100%),
              radial-gradient(circle at 30% 20%, #3B82F6 0%, transparent 65%);
}

.pdf-thumb-1 .thumb-inner-art {
  background: linear-gradient(180deg, rgba(70, 30, 40, 0.4) 0%, rgba(35, 15, 20, 0.95) 100%),
              radial-gradient(circle at 60% 40%, #EC4899 0%, transparent 65%);
}

.cbz-thumb-1 .thumb-inner-art {
  background: linear-gradient(180deg, rgba(20, 50, 40, 0.4) 0%, rgba(10, 25, 20, 0.95) 100%),
              radial-gradient(circle at 40% 30%, #10B981 0%, transparent 65%);
}

.art-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: #FFFFFF;
  line-height: 1.3;
  text-shadow: 0 2px 6px rgba(0, 0, 0, 0.8);
}

.art-vol {
  font-size: 0.72rem;
  color: var(--primary-light);
  font-weight: 600;
  margin-top: 3px;
}

.video-label {
  font-size: 0.82rem;
  color: #93C5FD;
  font-weight: 600;
}

.card-meta {
  padding: 10px 12px;
  background: var(--bg-surface);
}

.card-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 2px;
}

.card-sub {
  font-size: 0.7rem;
  color: var(--text-subtle);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* --------------------------------------------------------------------------
   Highlights / Pillars Section
   -------------------------------------------------------------------------- */
.section {
  padding: 100px 0;
  position: relative;
}

.pillars-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
}

.pillar-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 34px 26px;
  backdrop-filter: var(--glass-blur);
  transition: all 0.3s ease;
  position: relative;
}

.pillar-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.pillar-icon-box {
  width: 54px;
  height: 54px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  font-size: 1.6rem;
}

.icon-orange {
  background: rgba(230, 138, 60, 0.15);
  color: var(--primary-light);
  border: 1px solid rgba(230, 138, 60, 0.3);
}

.icon-red {
  background: rgba(232, 65, 65, 0.15);
  color: #F87171;
  border: 1px solid rgba(232, 65, 65, 0.3);
}

.icon-green {
  background: rgba(52, 211, 153, 0.15);
  color: var(--accent-green);
  border: 1px solid rgba(52, 211, 153, 0.3);
}

.icon-gold {
  background: rgba(251, 191, 36, 0.15);
  color: var(--accent-gold);
  border: 1px solid rgba(251, 191, 36, 0.3);
}

.pillar-title {
  font-size: 1.22rem;
  margin-bottom: 12px;
  line-height: 1.45;
}

.pillar-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.75;
}

/* --------------------------------------------------------------------------
   Cross-Device Sync Showcase
   -------------------------------------------------------------------------- */
.sync-showcase {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  margin: 40px auto;
  max-width: 960px;
  padding: 32px 28px;
  background: rgba(28, 23, 34, 0.75);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  backdrop-filter: var(--glass-blur);
  box-shadow: var(--shadow-md);
}

.sync-device-pc {
  flex: 1.2;
  background: #191520;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.sync-window-top {
  height: 32px;
  background: #14111A;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 12px;
  border-bottom: 1px solid var(--border-subtle);
}

.sync-dots {
  display: flex;
  gap: 5px;
}

.sw-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
}

.sw-dot:nth-child(1) { background: #E84141; opacity: 0.85; }
.sw-dot:nth-child(2) { background: #FBBF24; opacity: 0.85; }
.sw-dot:nth-child(3) { background: #34D399; opacity: 0.85; }

.sw-address {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-subtle);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sync-screen-pc {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sync-mini-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.sync-mini-item {
  aspect-ratio: 3 / 4;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  font-size: 1.3rem;
}

.smi-badge {
  position: absolute;
  top: 4px;
  left: 4px;
  font-size: 0.55rem;
  font-weight: 700;
  padding: 1px 4px;
  border-radius: 3px;
  font-family: var(--font-mono);
}

.item-book .smi-badge { background: #E68A3C; color: #fff; }
.item-video .smi-badge { background: #E84141; color: #fff; }
.item-pdf .smi-badge { background: #EC4899; color: #fff; }
.item-cbz .smi-badge { background: #10B981; color: #18151D; }

.sync-badge-label {
  text-align: center;
  font-size: 0.78rem;
  color: var(--primary-light);
  font-weight: 600;
  background: rgba(230, 138, 60, 0.1);
  border-radius: var(--radius-sm);
  padding: 5px 8px;
}

/* Connection Bridge */
.sync-connection-bridge {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  flex-shrink: 0;
  width: 140px;
}

.wifi-pulse-icon {
  font-size: 1.8rem;
  animation: pulseWifi 2s infinite ease-in-out;
}

@keyframes pulseWifi {
  0%, 100% { transform: scale(1); opacity: 0.8; }
  50% { transform: scale(1.15); opacity: 1; filter: drop-shadow(0 0 10px var(--primary)); }
}

.wifi-label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-main);
}

.wifi-line {
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, rgba(230, 138, 60, 0.2) 0%, rgba(230, 138, 60, 0.8) 50%, rgba(230, 138, 60, 0.2) 100%);
  position: relative;
  margin: 4px 0;
}

.pulse-dot {
  position: absolute;
  top: -3px;
  left: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #E68A3C;
  box-shadow: 0 0 8px #E68A3C;
  animation: moveDot 2s infinite linear;
}

@keyframes moveDot {
  0% { left: 0%; opacity: 0; }
  20% { opacity: 1; }
  80% { opacity: 1; }
  100% { left: 95%; opacity: 0; }
}

.wifi-sublabel {
  font-size: 0.68rem;
  color: var(--text-subtle);
  text-align: center;
  line-height: 1.3;
}

/* Phone Mockup */
.sync-device-phone {
  flex: 0.85;
  max-width: 240px;
}

.phone-frame {
  background: #191520;
  border: 2px solid rgba(255, 255, 255, 0.18);
  border-radius: 28px;
  padding: 10px 8px;
  box-shadow: var(--shadow-md);
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.phone-notch {
  width: 44px;
  height: 4px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 3px;
  margin: 0 auto 2px;
}

.phone-screen {
  background: #14101A;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
}

.phone-browser-bar {
  background: #201A28;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  padding: 5px 8px;
  display: flex;
  align-items: center;
  gap: 6px;
  border-bottom: 1px solid var(--border-subtle);
}

.phone-lock {
  font-size: 0.65rem;
  color: var(--accent-green);
}

.phone-content-view {
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 140px;
}

.phone-header-mini {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.72rem;
  padding: 0 4px;
}

.ph-brand {
  font-weight: 800;
  color: var(--primary);
}

.ph-menu {
  color: var(--text-muted);
}

.phone-thumb-viewer {
  background: rgba(255, 255, 255, 0.03);
  border-radius: 8px;
  padding: 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.phone-manga-spread {
  display: flex;
  gap: 4px;
  width: 100%;
  aspect-ratio: 16 / 10;
}

.p-page {
  flex: 1;
  background: #251E2E;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  position: relative;
}

.p-page::after {
  content: '';
  position: absolute;
  inset: 4px;
  border-radius: 2px;
  background: linear-gradient(135deg, rgba(230, 138, 60, 0.15) 0%, transparent 60%);
}

.phone-page-num {
  font-size: 0.65rem;
  color: var(--text-subtle);
  font-family: var(--font-mono);
}

/* --------------------------------------------------------------------------
   Feature Tabs & Showcase Section
   -------------------------------------------------------------------------- */
.feature-tabs-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 26px;
  border-radius: var(--radius-full);
  background: var(--bg-surface);
  border: 1px solid var(--border-card);
  color: var(--text-muted);
  font-size: 0.98rem;
  font-weight: 600;
  transition: all 0.25s ease;
}

.tab-btn:hover {
  color: var(--text-main);
  background: var(--bg-surface-elevated);
}

.tab-btn.active {
  background: var(--primary);
  border-color: var(--primary-light);
  color: #FFFFFF;
  box-shadow: 0 4px 18px var(--primary-glow);
}

.tab-content-panel {
  display: none;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 50px;
  backdrop-filter: var(--glass-blur);
}

.tab-content-panel.active {
  display: grid;
  animation: fadeIn 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.feature-info-title {
  font-size: 1.8rem;
  margin-bottom: 16px;
  line-height: 1.35;
}

.feature-info-desc {
  color: var(--text-muted);
  font-size: 1.02rem;
  line-height: 1.85;
  margin-bottom: 26px;
}

.feature-checklist {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.feature-checklist li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: var(--text-main);
  font-size: 0.96rem;
  line-height: 1.6;
}

.feature-checklist .check-icon {
  color: var(--accent-green);
  font-size: 1.1rem;
  flex-shrink: 0;
  margin-top: 1px;
}

.feature-visual-box {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  aspect-ratio: 16 / 10;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.feature-visual-header {
  height: 38px;
  background: #191520;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.78rem;
  color: var(--text-subtle);
  font-family: var(--font-mono);
}

.fv-badge {
  font-size: 0.68rem;
  background: rgba(230, 138, 60, 0.15);
  color: var(--primary-light);
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
}

.fv-badge.green {
  background: rgba(52, 211, 153, 0.15);
  color: var(--accent-green);
}

.fv-badge.orange {
  background: rgba(245, 158, 11, 0.15);
  color: #FBBF24;
}

/* Tab 1: Manga Viewer */
.fv-manga-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: #15111B;
  padding: 14px;
  gap: 10px;
}

.fv-manga-topbar {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.fv-tb-btn {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  padding: 3px 8px;
  font-size: 0.72rem;
}

.fv-tb-btn.active {
  background: rgba(230, 138, 60, 0.2);
  border-color: rgba(230, 138, 60, 0.4);
  color: var(--primary-light);
}

.fv-tb-info {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-subtle);
}

.fv-manga-canvas {
  flex: 1;
  display: flex;
  gap: 6px;
  min-height: 180px;
}

.fv-spread-page {
  flex: 1;
  background: #231D2C;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: relative;
}

.manga-panel-art {
  background: rgba(255, 255, 255, 0.05);
  border: 1px dashed rgba(255, 255, 255, 0.15);
  border-radius: 3px;
}

.panel-1 { height: 45%; }
.panel-2 { height: 45%; }
.panel-hero {
  height: 92%;
  background: linear-gradient(135deg, rgba(230, 138, 60, 0.12) 0%, rgba(232, 65, 65, 0.12) 100%);
  border: 1px solid rgba(230, 138, 60, 0.3);
}

.page-corner-num {
  position: absolute;
  bottom: 6px;
  right: 8px;
  font-size: 0.65rem;
  font-family: var(--font-mono);
  color: var(--text-subtle);
}

.fv-manga-drawer {
  display: flex;
  gap: 8px;
  justify-content: center;
  padding: 6px;
  background: rgba(0, 0, 0, 0.3);
  border-radius: 6px;
}

.fv-drawer-thumb {
  width: 44px;
  height: 28px;
  background: #251E2E;
  border: 1px solid var(--border-subtle);
  border-radius: 3px;
  font-size: 0.6rem;
  font-family: var(--font-mono);
  color: var(--text-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
}

.fv-drawer-thumb.active {
  border-color: var(--primary);
  color: var(--primary-light);
  background: rgba(230, 138, 60, 0.15);
  font-weight: 700;
}

/* Tab 2: Video Player */
.fv-video-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: #14101A;
  padding: 14px;
  gap: 12px;
}

.fv-video-screen {
  flex: 1;
  background: linear-gradient(180deg, #1C2333 0%, #0F1420 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 6px;
  position: relative;
  min-height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.fv-video-play-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(230, 138, 60, 0.9);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  padding-left: 3px;
  box-shadow: 0 0 20px rgba(230, 138, 60, 0.5);
}

.fv-video-time {
  position: absolute;
  bottom: 8px;
  left: 10px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: #fff;
  background: rgba(0, 0, 0, 0.6);
  padding: 2px 6px;
  border-radius: 3px;
}

.fv-video-speed-tag {
  position: absolute;
  bottom: 8px;
  right: 10px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: #fff;
  background: rgba(0, 0, 0, 0.6);
  padding: 2px 6px;
  border-radius: 3px;
}

.fv-scenes-bar-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.74rem;
  color: var(--text-muted);
}

.fv-seek-hint {
  font-size: 0.68rem;
  color: var(--primary-light);
}

.fv-scenes-filmstrip {
  display: flex;
  gap: 4px;
  height: 40px;
}

.film-frame {
  flex: 1;
  background: #252030;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  position: relative;
}

.film-frame.current {
  border-color: var(--primary);
  background: rgba(230, 138, 60, 0.25);
}

.film-cursor-pin {
  position: absolute;
  top: -18px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--primary-light);
  white-space: nowrap;
  font-weight: 700;
}

/* Tab 3: Filer & ZIP */
.fv-filer-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: #16121C;
  padding: 16px;
  gap: 14px;
}

.fv-filer-tree {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.filer-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  font-size: 0.82rem;
}

.filer-row.folder {
  font-weight: 600;
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.05);
}

.filer-row.active {
  border-color: rgba(52, 211, 153, 0.4);
  background: rgba(52, 211, 153, 0.08);
}

.fr-icon { font-size: 1rem; }
.fr-name {
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--text-muted);
}

.fr-action-btn {
  background: var(--primary);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 4px;
  white-space: nowrap;
}

.fr-tag {
  background: rgba(52, 211, 153, 0.2);
  color: var(--accent-green);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 4px;
}

.fv-filer-job-toast {
  background: rgba(30, 40, 35, 0.85);
  border: 1px solid rgba(52, 211, 153, 0.35);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.job-check {
  color: var(--accent-green);
  font-size: 1.2rem;
  font-weight: 800;
}

.job-info {
  display: flex;
  flex-direction: column;
  font-size: 0.76rem;
  line-height: 1.4;
}

.job-info strong { color: var(--text-main); }
.job-info span { color: var(--text-subtle); }

/* Tab 4: Video Compression */
.fv-compress-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: #16121C;
  padding: 18px;
  gap: 14px;
}

.fv-job-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.fv-job-title-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.job-file-icon { font-size: 1.1rem; }
.job-filename {
  flex: 1;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.job-status-pill {
  font-size: 0.72rem;
  font-weight: 700;
  background: rgba(245, 158, 11, 0.18);
  color: #FBBF24;
  padding: 3px 8px;
  border-radius: 4px;
  font-family: var(--font-mono);
}

.fv-progress-track {
  width: 100%;
  height: 8px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  overflow: hidden;
}

.fv-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, #F59E0B 0%, #10B981 100%);
  border-radius: 4px;
}

.fv-compression-stats {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 6px;
}

.stat-col {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stat-label {
  font-size: 0.68rem;
  color: var(--text-subtle);
}

.stat-val {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
}

.stat-val.original { color: var(--text-muted); }
.stat-val.compressed { color: var(--accent-green); }

.stat-col.arrow {
  color: var(--text-subtle);
  font-size: 0.9rem;
}

.stat-badge-reduction {
  background: rgba(52, 211, 153, 0.15);
  border: 1px solid rgba(52, 211, 153, 0.3);
  color: var(--accent-green);
  font-size: 0.78rem;
  font-weight: 800;
  padding: 3px 10px;
  border-radius: 999px;
  font-family: var(--font-mono);
}

.fv-compress-footer {
  font-size: 0.74rem;
  color: var(--text-subtle);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* --------------------------------------------------------------------------
   Formats & Tech Specs Grid
   -------------------------------------------------------------------------- */
.specs-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
}

.spec-category-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 34px;
  backdrop-filter: var(--glass-blur);
}

.spec-category-title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.25rem;
  margin-bottom: 22px;
  color: var(--text-main);
}

.format-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.format-tag {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  padding: 7px 15px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--text-muted);
  transition: all 0.2s ease;
}

.format-tag.highlight {
  border-color: rgba(230, 138, 60, 0.45);
  color: var(--primary-light);
  background: rgba(230, 138, 60, 0.12);
}

/* --------------------------------------------------------------------------
   Download & Quick Start Section
   -------------------------------------------------------------------------- */
.download-box {
  background: linear-gradient(135deg, #2A2332 0%, #1E1825 100%);
  border: 1px solid rgba(230, 138, 60, 0.35);
  border-radius: var(--radius-lg);
  padding: 64px 44px;
  text-align: center;
  box-shadow: 0 0 50px rgba(230, 138, 60, 0.12);
  position: relative;
  overflow: hidden;
}

.download-title {
  font-size: clamp(1.9rem, 3.5vw, 2.4rem);
  margin-bottom: 16px;
  line-height: 1.35;
}

.download-desc {
  color: var(--text-muted);
  font-size: 1.08rem;
  line-height: 1.85;
  max-width: 620px;
  margin: 0 auto 38px;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
  text-align: left;
}

.step-card {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 26px;
}

.step-number {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary-light);
  margin-bottom: 8px;
}

.step-title {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.step-desc {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   FAQ Section
   -------------------------------------------------------------------------- */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.faq-item.active {
  border-color: rgba(230, 138, 60, 0.45);
}

.faq-question {
  width: 100%;
  padding: 22px 26px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.5;
}

.faq-toggle-icon {
  font-size: 1.3rem;
  color: var(--text-muted);
  transition: transform 0.3s ease;
  margin-left: 12px;
  flex-shrink: 0;
}

.faq-item.active .faq-toggle-icon {
  transform: rotate(45deg);
  color: var(--primary-light);
}

.faq-answer {
  display: none;
  padding: 0 26px 22px;
  color: var(--text-muted);
  font-size: 0.96rem;
  line-height: 1.8;
}

.faq-item.active .faq-answer {
  display: block;
  animation: fadeIn 0.3s ease;
}

/* --------------------------------------------------------------------------
   Contact & Community Section
   -------------------------------------------------------------------------- */
.contact-box {
  background: linear-gradient(135deg, rgba(34, 29, 40, 0.9) 0%, rgba(44, 38, 52, 0.75) 100%);
  border: 1px solid rgba(230, 138, 60, 0.3);
  border-radius: var(--radius-lg);
  padding: 52px 36px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(12, 10, 15, 0.45);
}

.contact-box::before {
  content: '';
  position: absolute;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 70%;
  height: 90%;
  background: radial-gradient(circle, rgba(230, 138, 60, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.contact-title {
  font-size: 1.85rem;
  font-weight: 700;
  margin: 18px 0 14px;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.contact-desc {
  color: var(--text-muted);
  font-size: 0.98rem;
  line-height: 1.85;
  max-width: 680px;
  margin: 0 auto 30px;
}

.contact-desc strong {
  color: var(--primary-light);
  font-weight: 600;
}

.contact-cta {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.contact-btn {
  font-size: 1.05rem;
  padding: 16px 36px;
  box-shadow: 0 6px 20px var(--primary-glow);
}

.contact-note {
  margin-top: 18px;
  color: var(--text-subtle);
  font-size: 0.86rem;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background: #110E14;
  border-top: 1px solid var(--border-subtle);
  padding: 60px 0 32px;
  margin-top: 90px;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand-desc {
  color: var(--text-subtle);
  font-size: 0.92rem;
  line-height: 1.75;
  margin-top: 16px;
  max-width: 360px;
}

.footer-col-title {
  font-size: 1rem;
  margin-bottom: 20px;
  color: var(--text-main);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-link {
  color: var(--text-muted);
  font-size: 0.92rem;
  transition: color 0.2s ease;
}

.footer-link:hover {
  color: var(--primary-light);
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--text-subtle);
  font-size: 0.86rem;
  flex-wrap: wrap;
  gap: 16px;
}

/* --------------------------------------------------------------------------
   Responsive Media Queries
   -------------------------------------------------------------------------- */
@media (max-width: 992px) {
  .tab-content-panel {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 36px;
  }

  .steps-grid {
    grid-template-columns: 1fr;
  }

  .footer-top {
    grid-template-columns: 1fr 1fr;
  }

  .header-top-row {
    gap: 10px;
  }

  .header-center-actions {
    gap: 6px;
  }

  .header-center-actions .btn {
    padding: 0 12px;
    font-size: 0.82rem;
  }

  .nav-menu {
    gap: 8px;
  }

  .nav-pill-btn {
    padding: 0 14px;
    height: 36px;
    min-height: 36px;
    font-size: 0.84rem;
    gap: 6px;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 96px;
  }

  .site-header {
    padding: 6px 0 6px;
  }

  .site-header.scrolled {
    padding: 6px 0 6px;
  }

  .header-container {
    gap: 6px;
    padding: 0 12px;
  }

  .header-top-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
  }

  .header-center-actions {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-left: auto;
  }

  .header-utility {
    display: flex;
    align-items: center;
  }

  .brand-badge {
    display: none;
  }

  .brand-logo {
    font-size: 1.15rem;
    gap: 8px;
  }

  .brand-logo img, .brand-logo svg {
    width: 32px;
    height: 32px;
    border-radius: 8px;
  }

  .header-nav-row {
    justify-content: flex-start;
    width: 100%;
  }

  .nav-menu {
    display: flex;
    justify-content: flex-start;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    gap: 6px;
    padding: 2px 0;
    width: 100%;
  }

  .nav-menu::-webkit-scrollbar {
    display: none;
  }

  .nav-pill-btn {
    padding: 0 12px;
    height: 32px;
    min-height: 32px;
    font-size: 0.78rem;
    gap: 5px;
    flex-shrink: 0;
    white-space: nowrap;
    border-radius: var(--radius-full);
  }

  .pill-icon {
    font-size: 0.85rem;
  }

  .lang-switcher {
    height: 32px;
    min-height: 32px;
    padding: 0 6px 0 8px;
  }

  .lang-switcher-icon {
    font-size: 0.82rem;
    margin-right: 4px;
  }

  .lang-switcher-select {
    font-size: 0.76rem;
    padding-right: 10px;
  }

  .lang-switcher-arrow {
    right: 6px;
    font-size: 0.55rem;
  }

  .header-download-btn {
    height: 32px;
    min-height: 32px;
    padding: 0 10px;
    font-size: 0.82rem;
  }

  .header-download-btn span {
    display: none;
  }

  .header-cien-btn {
    height: 32px;
    min-height: 32px;
    padding: 0 10px;
  }

  .header-cien-btn .cien-text {
    display: none;
  }

  .header-github-btn {
    height: 32px;
    min-height: 32px;
    padding: 0 10px;
  }

  .header-github-btn .github-text {
    display: none;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  /* Real UI Mock Responsive */
  .app-ui-layout {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .app-sidebar {
    display: none;
  }

  .app-cards-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  /* Sync Showcase Responsive */
  .sync-showcase {
    flex-direction: column;
    gap: 20px;
    padding: 20px 16px;
  }

  .sync-device-pc {
    width: 100%;
  }

  .sync-connection-bridge {
    width: 100%;
  }

  .sync-device-phone {
    max-width: 100%;
    width: 260px;
  }

  .download-box {
    padding: 44px 20px;
  }
}