/* ============================================================
   FURINAR — Stylesheet
   Palette & Aesthetic: Bevy Engine inspired
   Technical, clean, open-source, sober. No SaaS/glow effects.
   ============================================================ */

/* ===== DESIGN TOKENS ===== */
:root {
  /* Color Palette */
  --bg:                   #0B1624;
  --surface:              #0F1D2D;
  --surface-2:            #14263A;
  --border:               #1D344A;
  --border-soft:          #152738;

  --color-primary:        #6FA9C7;
  --color-primary-hover:  #9BC4D8;
  --color-on-primary:     #0B1624;

  --text:                 #DCE8ED;
  --text-muted:           #718596;
  --text-faint:           #4E6274;

  /* Aliases for semantic compatibility */
  --cyan:                 var(--color-primary);
  --cyan-soft:            var(--color-primary-hover);
  --cyan-dim:             var(--surface-2);
  --gold:                 var(--color-primary);
  --gold-dim:             var(--surface-2);
  --pearl:                var(--text);

  /* Typography */
  --font-sans:            'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-display:         'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono:            'JetBrains Mono', 'SF Mono', 'Fira Code', Consolas, monospace;

  /* Spacing */
  --section-pad:          100px;
  --container:            1160px;
  --radius:               6px;
  --radius-lg:            8px;

  /* Transitions */
  --ease-out:             cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out:          cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  min-height: 100vh;
  overflow-x: hidden;
}

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

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

ul, ol {
  list-style: none;
}

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

kbd {
  font-family: var(--font-mono);
  font-size: 0.75em;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 6px;
  color: var(--color-primary);
}

code {
  font-family: var(--font-mono);
}

/* ===== FOCUS ===== */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ===== CONTAINER ===== */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
  cursor: pointer;
  white-space: nowrap;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-on-primary);
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  color: var(--color-on-primary);
}

.btn-primary:active {
  background: var(--color-primary);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  background: var(--surface-2);
  border-color: var(--border);
  color: var(--text);
}

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--surface-2);
  border-color: var(--border);
  color: var(--text);
}

.text-link {
  color: var(--text-muted);
  font-size: 0.875rem;
  transition: color 0.15s;
}

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

/* ===== SECTION COMMON ===== */
.section-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.2vw, 2.4rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text);
  margin-bottom: 16px;
  letter-spacing: -0.025em;
}

.section-body {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 520px;
  line-height: 1.75;
}

.section-body strong {
  color: var(--text);
  font-weight: 600;
}

.section-body--center {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-header .section-label {
  display: block;
}

/* ===== REVEAL ON SCROLL ===== */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s var(--ease-out), transform 0.5s var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

.reveal-delay-1 {
  transition-delay: 0.1s;
}

.reveal-delay-2 {
  transition-delay: 0.2s;
}

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: background 0.2s, border-color 0.2s;
  border-bottom: 1px solid transparent;
}

.navbar.scrolled {
  background: rgba(11, 22, 36, 0.95);
  border-color: var(--border);
}

.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  text-decoration: none;
}

.nav-logo-icon {
  width: 24px;
  height: 24px;
  object-fit: contain;
}

.nav-logo-text {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--text);
  transition: color 0.15s;
}

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

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

.nav-links a {
  font-size: 0.875rem;
  color: var(--text-muted);
  padding: 6px 12px;
  border-radius: var(--radius);
  transition: color 0.15s, background 0.15s;
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-links a:hover {
  color: var(--text);
  background: var(--surface-2);
}

.nav-github {
  font-size: 0.85rem !important;
}

.nav-cta {
  background: var(--color-primary) !important;
  color: var(--color-on-primary) !important;
  font-weight: 600 !important;
  padding: 6px 14px !important;
  border-radius: var(--radius) !important;
  margin-left: 4px;
}

.nav-cta:hover {
  background: var(--color-primary-hover) !important;
  color: var(--color-on-primary) !important;
}

/* Language Switcher */
.lang-switcher {
  display: inline-flex;
  align-items: center;
  margin-left: 2px;
}

.lang-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 9px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
  cursor: pointer;
}

.lang-btn:hover {
  border-color: var(--border);
  color: var(--text);
  background: var(--surface-2);
}

.lang-opt {
  transition: color 0.15s;
}

.lang-opt.active {
  color: var(--color-primary);
  font-weight: 700;
}

.lang-sep {
  color: var(--text-faint);
  font-weight: 400;
}

.mobile-lang-wrap {
  padding: 12px 0 6px;
  border-top: 1px solid var(--border-soft);
  margin-top: 6px;
}

.mobile-lang-btn {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  padding: 10px;
  font-size: 0.88rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text-muted);
}

.mobile-lang-btn:hover {
  border-color: var(--border);
  color: var(--text);
}

/* Mobile burger */
.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  cursor: pointer;
}

.nav-burger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text);
  transition: transform 0.2s, opacity 0.2s;
  border-radius: 2px;
}

.mobile-menu {
  display: none;
  flex-direction: column;
  padding: 12px 32px 20px;
  border-top: 1px solid var(--border);
  background: var(--surface);
  gap: 4px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s var(--ease-in-out);
}

.mobile-menu.open {
  max-height: 320px;
}

.mobile-menu a {
  font-size: 1rem;
  color: var(--text-muted);
  padding: 10px 0;
  border-bottom: 1px solid var(--border-soft);
  transition: color 0.15s;
}

.mobile-menu a:hover {
  color: var(--color-primary-hover);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  padding: 120px 0 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: var(--bg);
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding-bottom: 48px;
}

.hero-icon-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 16px;
}

.hero-icon {
  width: clamp(100px, 13vw, 130px);
  height: clamp(100px, 13vw, 130px);
  object-fit: contain;
  filter: drop-shadow(0 6px 20px rgba(0, 0, 0, 0.45));
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5.5vw, 4.2rem);
  font-weight: 800;
  line-height: 1.08;
  color: var(--text);
  margin-bottom: 20px;
  letter-spacing: -0.035em;
}

.hero-title em {
  font-style: normal;
  color: var(--color-primary);
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.125rem);
  color: var(--text-muted);
  max-width: 520px;
  margin: 0 auto 40px;
  line-height: 1.75;
}

/* RAM stat */
.hero-stat-row {
  display: inline-flex;
  align-items: center;
  gap: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 24px;
  margin-bottom: 36px;
}

.hero-stat {
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.stat-unit {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-primary);
  opacity: 0.85;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-left: 4px;
}

.stat-divider {
  width: 1px;
  height: 32px;
  background: var(--border);
}

.stat-context {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* CTAs */
.hero-ctas {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

/* Platforms */
.hero-platforms {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.platform-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  color: var(--text-faint);
  letter-spacing: 0.04em;
}

/* Hero screenshot */
.hero-screenshot-wrap {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  padding: 0 20px;
}

.screenshot-frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--surface);
}

.hero-screenshot {
  width: 100%;
  height: auto;
  display: block;
}

/* ============================================================
   SECTION — LIGHTWEIGHT
   ============================================================ */
.section-light {
  padding: var(--section-pad) 0;
}

.light-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.light-pillars {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.light-pillars li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.925rem;
  color: var(--text-muted);
}

.pillar-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  flex-shrink: 0;
}

/* RAM bar comparison */
.light-visual {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 32px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.weight-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.weight-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.02em;
}

.weight-bar-wrap {
  width: 100%;
  background: var(--surface-2);
  border: 1px solid var(--border-soft);
  border-radius: 4px;
  height: 28px;
  overflow: hidden;
}

.weight-bar {
  height: 100%;
  border-radius: 3px;
  display: flex;
  align-items: center;
  padding: 0 12px;
}

.weight-bar--furinar {
  width: 4%;
  background: var(--color-primary);
  min-width: 60px;
}

.weight-bar--browser {
  width: 85%;
  background: var(--surface-2);
}

.weight-bar-value {
  font-size: 0.72rem;
  font-weight: 600;
  white-space: nowrap;
  color: var(--color-on-primary);
}

.weight-bar--browser .weight-bar-value {
  color: var(--text-faint);
}

.weight-note {
  font-size: 0.75rem;
  color: var(--text-faint);
  margin-top: 4px;
}

/* ============================================================
   SECTION — FEATURES
   ============================================================ */
.section-features {
  padding: var(--section-pad) 0;
}

.features-editorial {
  display: flex;
  flex-direction: column;
}

.feature-divider {
  height: 1px;
  background: var(--border-soft);
  margin: 56px 0;
}

.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.feature-row--reverse {
  direction: rtl;
}

.feature-row--reverse > * {
  direction: ltr;
}

.feature-number {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--text-faint);
  margin-bottom: 10px;
}

.feature-title {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.3vw, 1.85rem);
  font-weight: 700;
  color: var(--text);
  margin-bottom: 14px;
  line-height: 1.25;
}

.feature-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.75;
  max-width: 460px;
  margin-bottom: 18px;
}

.feature-desc code {
  font-size: 0.85em;
  color: var(--color-primary-hover);
  background: var(--surface-2);
  padding: 1px 6px;
  border-radius: 3px;
  border: 1px solid var(--border-soft);
}

.feature-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.feature-tags li {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--color-primary);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 3px 9px;
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.feature-list li {
  font-size: 0.9rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 10px;
}

.feature-list li::before {
  content: '';
  display: inline-block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-primary);
  flex-shrink: 0;
}

.feature-row-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ===== Demo UI elements ===== */

/* Control demo */
.control-demo {
  width: 100%;
  max-width: 320px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.demo-track-info {
  border-bottom: 1px solid var(--border-soft);
  padding-bottom: 12px;
}

.demo-track-name {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: block;
  transition: opacity 0.3s ease;
}

.demo-bar {
  position: relative;
  height: 4px;
  background: var(--surface-2);
  border-radius: 4px;
}

.demo-progress {
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 0%;
  background: var(--color-primary);
  border-radius: 4px;
  transition: width 0.25s linear;
}

.demo-thumb {
  position: absolute;
  top: 50%;
  left: 0%;
  width: 10px;
  height: 10px;
  background: var(--color-primary-hover);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: left 0.25s linear;
}

.demo-time {
  display: flex;
  justify-content: space-between;
  font-size: 0.72rem;
  color: var(--text-faint);
  font-variant-numeric: tabular-nums;
  font-family: var(--font-mono);
}

.demo-controls {
  display: flex;
  justify-content: center;
  gap: 12px;
}

.demo-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--surface-2);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  cursor: default;
}

.demo-btn--play {
  background: var(--color-primary);
  color: var(--color-on-primary);
  border-color: var(--color-primary);
}

.demo-badges {
  display: flex;
  gap: 8px;
  justify-content: center;
}

.demo-badge {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
  padding: 3px 8px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--surface);
}

.demo-badge--active {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: var(--surface-2);
}

/* Tabs demo */
.tabs-demo {
  width: 100%;
  max-width: 340px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.tabs-bar {
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border);
  padding: 0 4px;
  gap: 2px;
}

.tab {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-faint);
  padding: 10px 14px;
  cursor: default;
  display: flex;
  align-items: center;
  gap: 6px;
  border-bottom: 2px solid transparent;
}

.tab--active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.tab-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
}

.tab-add {
  font-size: 1rem;
  color: var(--text-faint);
  padding: 8px 12px;
  cursor: default;
  margin-left: auto;
}

.tab-list {
  padding: 6px 0;
}

.tab-item {
  font-size: 0.78rem;
  color: var(--text-muted);
  padding: 8px 16px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tab-item--playing {
  color: var(--text);
  background: var(--surface-2);
  display: flex;
  align-items: center;
  gap: 8px;
}

.tab-indicator {
  width: 3px;
  height: 14px;
  background: var(--color-primary);
  border-radius: 2px;
  flex-shrink: 0;
}

/* Search demo */
.search-demo {
  width: 100%;
  max-width: 320px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.search-input-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-faint);
}

.search-input-text {
  font-size: 0.8rem;
  color: var(--text-faint);
  flex: 1;
}

.search-cursor {
  width: 2px;
  height: 14px;
  background: var(--color-primary);
  border-radius: 1px;
  animation: blink 1.2s step-end infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.search-results {
  padding: 6px 0;
}

.search-result-item {
  font-size: 0.78rem;
  color: var(--text-muted);
  padding: 8px 16px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.search-result-item--active {
  background: var(--surface-2);
  color: var(--text);
}

/* Lyrics demo */
.lyrics-demo {
  width: 100%;
  max-width: 320px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px 18px 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow: hidden;
}

.lyrics-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-soft);
  padding-bottom: 10px;
  font-size: 0.72rem;
  color: var(--text-faint);
  font-family: var(--font-mono);
}

.lyrics-track-title {
  font-family: var(--font-sans);
  font-weight: 600;
  color: var(--text-muted);
  font-size: 0.75rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 190px;
}

.lyrics-timer {
  color: var(--color-primary);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

.lyrics-viewport {
  position: relative;
  height: 140px;
  overflow: hidden;
  mask-image: linear-gradient(to bottom, transparent, black 22%, black 78%, transparent);
  -webkit-mask-image: linear-gradient(to bottom, transparent, black 22%, black 78%, transparent);
}

.lyrics-track {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 44px 0;
  transition: transform 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
  will-change: transform;
}

.lyrics-line {
  font-size: 0.8rem;
  text-align: center;
  color: var(--text-faint);
  line-height: 1.4;
  opacity: 0.45;
  transition: color 0.35s ease, opacity 0.35s ease, transform 0.35s ease, font-size 0.35s ease;
  transform: scale(0.94);
  cursor: default;
  user-select: none;
}

.lyrics-line--active {
  color: var(--color-primary);
  font-size: 0.92rem;
  font-weight: 600;
  opacity: 1;
  transform: scale(1.02);
}

.lyrics-line--past {
  color: var(--text-muted);
  opacity: 0.3;
  transform: scale(0.92);
}

/* Keyboard demo */
.kbd-demo {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 100%;
  max-width: 280px;
}

.kbd-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.kbd-key {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 38px;
  padding: 0 8px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--text);
  flex-shrink: 0;
}

.kbd-key--wide {
  min-width: 76px;
}

.kbd-action {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ============================================================
   SHOWCASE / SCREENSHOTS
   ============================================================ */
.section-showcase {
  padding: var(--section-pad) 0;
}

.showcase-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 20px;
  align-items: start;
}

.showcase-col {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.showcase-item {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--surface);
  transition: border-color 0.15s;
}

.showcase-item:hover {
  border-color: var(--color-primary);
}

.showcase-img {
  width: 100%;
  display: block;
}

.showcase-item figure {
  display: flex;
  flex-direction: column;
}

.showcase-item figcaption {
  padding: 12px 18px;
  font-size: 0.78rem;
  color: var(--text-faint);
  font-weight: 500;
  letter-spacing: 0.02em;
  border-top: 1px solid var(--border-soft);
  background: var(--surface);
}

/* ============================================================
   SECTION — NATIVE
   ============================================================ */
.section-native {
  padding: var(--section-pad) 0;
}

.native-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.native-details {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.native-detail {
  padding: 18px 0;
  border-bottom: 1px solid var(--border-soft);
  display: flex;
  align-items: center;
  gap: 20px;
}

.native-detail:first-child {
  border-top: 1px solid var(--border-soft);
}

.detail-line {
  width: 3px;
  height: 28px;
  background: var(--color-primary);
  border-radius: 2px;
  flex-shrink: 0;
}

.detail-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-faint);
  font-weight: 600;
  width: 80px;
  flex-shrink: 0;
}

.detail-value {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ============================================================
   SECTION — DOWNLOAD
   ============================================================ */
.section-download {
  padding: var(--section-pad) 0;
  position: relative;
}

.download-inner {
  position: relative;
  z-index: 1;
  text-align: center;
}

.download-title {
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 4.2vw, 3.2rem);
  font-weight: 700;
  color: var(--text);
  margin-bottom: 14px;
  line-height: 1.1;
  letter-spacing: -0.025em;
}

.download-sub {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 48px;
}

.download-cards {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.dl-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px 28px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 12px;
  width: 300px;
  transition: border-color 0.15s, background 0.15s;
}

.dl-card:hover {
  border-color: var(--color-primary);
  background: var(--surface-2);
}

.dl-card-icon {
  color: var(--color-primary);
  margin-bottom: 4px;
}

.dl-card-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
}

.dl-card-file {
  font-size: 0.72rem;
  color: var(--text-faint);
  font-family: var(--font-mono);
}

.dl-card-note {
  font-size: 0.78rem;
  color: var(--text-faint);
  margin-bottom: 4px;
}

.dl-btn {
  margin-top: auto;
  width: 100%;
  justify-content: center;
}

/* Install details */
.install-details {
  max-width: 580px;
  margin: 0 auto 36px;
  text-align: left;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
}

.install-details summary {
  font-size: 0.82rem;
  color: var(--text-muted);
  padding: 14px 20px;
  cursor: pointer;
  user-select: none;
  transition: color 0.15s, background 0.15s;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.install-details summary::before {
  content: '›';
  display: inline-block;
  transition: transform 0.2s;
  color: var(--color-primary);
  font-weight: bold;
}

.install-details[open] summary::before {
  transform: rotate(90deg);
}

.install-details summary:hover {
  color: var(--text);
  background: var(--surface-2);
}

.install-methods {
  padding: 4px 20px 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  border-top: 1px solid var(--border-soft);
}

.install-method {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.install-method-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.install-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
}

.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--surface-2);
  border: 1px solid var(--border);
  transition: color 0.15s, border-color 0.15s, background 0.15s;
  cursor: pointer;
}

.copy-btn:hover {
  color: var(--color-primary-hover);
  border-color: var(--color-primary);
  background: var(--surface-2);
}

.copy-btn.copied {
  color: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
}

.copy-icon {
  flex-shrink: 0;
}

.install-methods pre {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 10px 12px;
  overflow-x: auto;
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--text);
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.download-links {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.link-sep {
  color: var(--text-faint);
  font-size: 0.85rem;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 56px 0 36px;
  margin-top: 40px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 36px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-brand-header {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-logo-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}

.footer-logo-icon {
  width: 24px;
  height: 24px;
  object-fit: contain;
}

.footer-logo-text {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--text);
}

.footer-pill {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--color-primary);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 8px;
}

.footer-tagline {
  font-size: 0.85rem;
  color: var(--text-faint);
}

.footer-actions {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-nav {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  align-items: center;
}

.footer-nav a {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: color 0.15s;
}

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

.back-to-top {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 6px 12px;
  text-decoration: none;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
  white-space: nowrap;
}

.back-to-top:hover {
  background: var(--surface);
  border-color: var(--color-primary);
  color: var(--color-primary-hover);
}

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

.footer-bottom p {
  font-size: 0.78rem;
  color: var(--text-faint);
  line-height: 1.6;
}

.footer-bottom em {
  font-style: italic;
}

.footer-built {
  flex-shrink: 0;
}

.footer-built a {
  color: var(--color-primary);
  transition: color 0.15s;
}

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

/* ============================================================
   RESPONSIVE — TABLET
   ============================================================ */
@media (max-width: 960px) {
  :root {
    --section-pad: 72px;
  }

  .container {
    padding: 0 24px;
  }

  .light-inner,
  .native-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .light-visual {
    max-width: 440px;
  }

  .feature-row {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .feature-row--reverse {
    direction: ltr;
  }

  .feature-row-visual {
    order: -1;
  }

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

  .showcase-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .download-cards {
    flex-direction: column;
    align-items: center;
  }

  .dl-card {
    width: 100%;
    max-width: 400px;
  }

  .footer-inner {
    flex-direction: column;
    gap: 28px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}

/* ============================================================
   RESPONSIVE — MOBILE
   ============================================================ */
@media (max-width: 640px) {
  :root {
    --section-pad: 56px;
  }

  .container {
    padding: 0 20px;
  }

  .nav-links {
    display: none;
  }

  .nav-burger {
    display: flex;
  }

  .mobile-menu {
    display: flex;
  }

  .hero {
    padding-top: 100px;
  }

  .hero-stat-row {
    flex-direction: column;
    gap: 10px;
    text-align: center;
  }

  .stat-divider {
    width: 32px;
    height: 1px;
  }

  .hero-ctas {
    flex-direction: column;
    align-items: center;
  }

  .hero-ctas .btn {
    width: 100%;
    max-width: 280px;
    justify-content: center;
  }

  .control-demo,
  .tabs-demo,
  .search-demo,
  .lyrics-demo,
  .kbd-demo {
    max-width: 100%;
  }

  .showcase-col {
    grid-template-columns: 1fr;
  }

  .hero-title {
    font-size: 2.2rem;
  }

  .section-title {
    font-size: 1.65rem;
  }

  .native-detail {
    flex-wrap: wrap;
    gap: 8px;
  }

  .detail-label {
    width: auto;
  }

  .download-links {
    flex-direction: column;
    gap: 8px;
  }

  .link-sep {
    display: none;
  }
}

/* ============================================================
   SCROLLBAR
   ============================================================ */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--surface-2);
}