/* MEDIABROWSER Design System — Advanced Studio Edition
   High-End Obsidian Dark Theme · Machined Double-Bezel Architecture
   Spotlight Card Borders · Multi-Tab Workstation · Responsive Mechanics
   Typography: Wanted Sans Variable + System Fallbacks */

:root {
  /* Surface Ladder (Linear Obsidian Aesthetic) */
  --bg-canvas: #08090d;
  --bg-subtle: #0d1017;
  --surface-1: #121622;
  --surface-2: #181e2e;
  --surface-3: #20273c;
  --surface-glass: rgba(18, 22, 34, 0.75);
  --surface-glass-strong: rgba(18, 22, 34, 0.92);

  /* Borders & Hairlines */
  --border-subtle: rgba(255, 255, 255, 0.07);
  --border-medium: rgba(255, 255, 255, 0.12);
  --border-highlight: rgba(255, 255, 255, 0.22);

  /* Typography Colors */
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-inverse: #08090d;

  /* Single Vibrant Accent & Glows */
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --accent-soft: rgba(59, 130, 246, 0.12);
  --accent-glow: rgba(59, 130, 246, 0.28);
  --accent-border: rgba(59, 130, 246, 0.35);

  /* Semantic Highlights */
  --success: #10b981;
  --success-soft: rgba(16, 185, 129, 0.14);
  --warning: #f59e0b;
  --warning-soft: rgba(245, 158, 11, 0.14);
  --danger: #ef4444;
  --danger-soft: rgba(239, 68, 68, 0.14);

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 12px 32px -8px rgba(0, 0, 0, 0.55);
  --shadow-lg: 0 24px 60px -16px rgba(0, 0, 0, 0.75);
  --shadow-glow: 0 0 40px -10px var(--accent-glow);

  /* Radii */
  --radius-pill: 9999px;
  --radius-bezel-outer: 24px;
  --radius-bezel-inner: 18px;
  --radius-card: 20px;
  --radius-chip: 10px;

  /* Layout */
  --nav-h: 68px;
  --container-max: 1180px;
}

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

html {
  scroll-behavior: smooth;
  color-scheme: dark;
  background-color: var(--bg-canvas);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  font-family: "Wanted Sans Variable", "Wanted Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  position: relative;
  min-height: 100dvh;
}

::selection {
  background: var(--accent);
  color: #ffffff;
}

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

/* ── Typography Scale & Weights ──────────────────────────────── */
h1, h2, h3, h4 {
  color: var(--text-primary);
  line-height: 1.15;
  letter-spacing: -0.03em;
  font-weight: 800;
  text-wrap: balance;
}

p {
  color: var(--text-secondary);
  font-weight: 400;
}

.sub {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 60ch;
}

.text-mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-variant-numeric: tabular-nums;
}

/* Keyboard Shortcut Tag */
kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 3px 7px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-primary);
  background: linear-gradient(180deg, var(--surface-2), var(--surface-1));
  border: 1px solid var(--border-medium);
  border-bottom: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 6px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
  line-height: 1;
}

/* ── Icons ───────────────────────────────────────────────────── */
.icon {
  width: 1.25em;
  height: 1.25em;
  fill: currentColor;
  flex: none;
  display: inline-block;
  vertical-align: -0.2em;
}

/* ── Ambient Background ──────────────────────────────────────── */
.ambient-lighting {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.ambient-spotlight {
  position: absolute;
  top: -260px;
  left: 50%;
  transform: translateX(-50%);
  width: 1100px;
  height: 700px;
  background: radial-gradient(ellipse 60% 50% at 50% 30%, rgba(59, 130, 246, 0.18) 0%, rgba(37, 99, 235, 0.05) 50%, transparent 80%);
  filter: blur(64px);
  opacity: 0.95;
}

.ambient-grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
                    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 75% 55% at 50% 25%, #000 20%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 75% 55% at 50% 25%, #000 20%, transparent 80%);
  opacity: 0.65;
}

/* ── Container Layout ────────────────────────────────────────── */
.wrap {
  width: min(var(--container-max), calc(100% - 48px));
  margin-inline: auto;
  position: relative;
  z-index: 1;
}

section {
  position: relative;
  z-index: 1;
}

.section-pad {
  padding: 128px 0;
}

.section-head {
  margin-bottom: 56px;
}

.section-head--center {
  text-align: center;
  margin-inline: auto;
  max-width: 720px;
}

.section-head h2 {
  font-size: clamp(2rem, 3.8vw, 2.75rem);
  margin-top: 12px;
}

.section-head .sub {
  margin-top: 16px;
  margin-inline: auto;
}

/* ── Eyebrow Badge ───────────────────────────────────────────── */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: var(--surface-1);
  border: 1px solid var(--border-medium);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.eyebrow-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}

/* ── Double-Bezel (Doppelrand) Architecture ───────────────────── */
.bezel-shell {
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.015));
  border: 1px solid var(--border-subtle);
  padding: 6px;
  border-radius: var(--radius-bezel-outer);
  box-shadow: var(--shadow-md);
  transition: border-color 0.3s cubic-bezier(0.16, 1, 0.3, 1), transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.bezel-inner {
  background: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-bezel-inner);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
  height: 100%;
}

.bezel-shell:hover {
  border-color: var(--border-highlight);
}

/* Spotlight Card (Cursor Responsive Glow) */
.spotlight-card {
  position: relative;
  overflow: hidden;
}

.spotlight-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(400px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(59, 130, 246, 0.15), transparent 80%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
  z-index: 1;
  border-radius: inherit;
}

.spotlight-card:hover::before {
  opacity: 1;
}

/* ── Glassmorphism ───────────────────────────────────────────── */
.glass {
  background: var(--surface-glass);
  backdrop-filter: blur(20px) saturate(170%);
  -webkit-backdrop-filter: blur(20px) saturate(170%);
  border: 1px solid var(--border-medium);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1), var(--shadow-md);
}

@media (prefers-reduced-transparency: reduce) {
  .glass {
    background: var(--surface-1);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
}

/* ── Navigation (Fluid Island) ────────────────────────────────── */
.nav-wrapper {
  position: fixed;
  top: 18px;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  justify-content: center;
  pointer-events: none;
}

.nav {
  pointer-events: auto;
  width: min(var(--container-max), calc(100% - 36px));
  height: var(--nav-h);
  border-radius: var(--radius-pill);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--text-primary);
}

.nav__logo-badge {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), #1d4ed8);
  display: grid;
  place-items: center;
  color: #ffffff;
  box-shadow: 0 4px 14px var(--accent-glow);
}

.nav__logo-badge .icon {
  width: 18px;
  height: 18px;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav__link {
  color: var(--text-secondary);
  font-size: 0.93rem;
  font-weight: 600;
  transition: color 0.2s ease;
  position: relative;
  padding: 6px 0;
}

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

.nav__link[aria-current="page"] {
  color: var(--text-primary);
}

.nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent);
  border-radius: var(--radius-pill);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.nav__hamburger {
  display: none;
  background: transparent;
  border: 0;
  color: var(--text-primary);
  cursor: pointer;
  padding: 8px;
}

.nav__hamburger .icon {
  width: 24px;
  height: 24px;
}

/* Mobile Nav Drawer */
.mobile-menu-overlay {
  position: fixed;
  inset: 0;
  background: rgba(8, 9, 13, 0.88);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  z-index: 90;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 32px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-menu-overlay.is-active {
  opacity: 1;
  pointer-events: auto;
}

.mobile-menu-links {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  text-align: center;
}

.mobile-menu-link {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-secondary);
  transition: color 0.2s ease;
}

.mobile-menu-link:hover, .mobile-menu-link[aria-current="page"] {
  color: var(--text-primary);
}

/* ── Buttons (Nested Button-in-Button Architecture) ───────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  border: 0;
  white-space: nowrap;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  user-select: none;
}

.btn:active {
  transform: translateY(1px) scale(0.98);
}

.btn--primary {
  background: var(--accent);
  color: #ffffff;
  padding: 10px 14px 10px 22px;
  box-shadow: 0 6px 20px -4px var(--accent-glow), inset 0 1px 0 rgba(255, 255, 255, 0.25);
}

.btn--primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 10px 28px -4px rgba(59, 130, 246, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.btn__icon-badge {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.18);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn--primary:hover .btn__icon-badge {
  transform: translate(2px, -2px);
}

.btn--ghost {
  background: var(--surface-1);
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
  padding: 12px 22px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

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

.btn--sm {
  padding: 8px 12px 8px 18px;
  font-size: 0.88rem;
}

.btn--sm .btn__icon-badge {
  width: 24px;
  height: 24px;
}

/* ── Hero Section ────────────────────────────────────────────── */
.hero {
  padding-top: calc(var(--nav-h) + 72px);
  padding-bottom: 96px;
  min-height: 90dvh;
  display: flex;
  align-items: center;
}

.hero__grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 56px;
  align-items: center;
}

/* 그리드 자식의 min-width:auto 가 긴 mono 문자열로 열 최소폭을 밀어내
   모바일 가로 오버플로를 만든다 — 축소 허용 */
.hero__grid > * { min-width: 0; }

.hero__copy {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.hero h1 {
  font-size: clamp(2.5rem, 4.6vw, 4rem);
  letter-spacing: -0.04em;
  line-height: 1.12;
}

.hero .sub {
  font-size: 1.125rem;
  line-height: 1.7;
}

.hero__cta-group {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.hero__trust-strip {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-top: 14px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
  flex-wrap: wrap;
}

.hero__trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.hero__trust-item .icon {
  color: var(--accent);
}

/* ── Multi-Tab Interactive Hero Workstation ──────────────────── */
.simulator-window {
  background: var(--surface-1);
  border-radius: var(--radius-bezel-inner);
  overflow: hidden;
  border: 1px solid var(--border-medium);
  box-shadow: var(--shadow-lg), 0 0 60px -15px var(--accent-glow);
}

.simulator-topbar {
  background: var(--bg-subtle);
  padding: 12px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-subtle);
  gap: 12px;
}

.window-dots {
  display: flex;
  gap: 6px;
}

.window-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
}

.window-dot:nth-child(1) { background: #ef4444; opacity: 0.8; }
.window-dot:nth-child(2) { background: #f59e0b; opacity: 0.8; }
.window-dot:nth-child(3) { background: #10b981; opacity: 0.8; }

.simulator-tabs {
  display: flex;
  gap: 4px;
  background: var(--surface-2);
  padding: 3px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-subtle);
}

.sim-tab-btn {
  background: transparent;
  border: 0;
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.sim-tab-btn:hover {
  color: var(--text-primary);
}

.sim-tab-btn.is-active {
  background: var(--accent);
  color: #ffffff;
  box-shadow: 0 2px 8px var(--accent-glow);
}

.simulator-content {
  padding: 20px;
  min-height: 290px;
}

.sim-tab-panel {
  display: none;
  flex-direction: column;
  gap: 16px;
  animation: fadeIn 0.3s ease;
}

.sim-tab-panel.is-active {
  display: flex;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Detection Banner */
.detection-banner {
  background: var(--accent-soft);
  border: 1px solid var(--accent-border);
  border-radius: var(--radius-chip);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.detection-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.detection-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
  animation: pulse-ring 2s infinite ease-out;
}

@keyframes pulse-ring {
  0% { transform: scale(0.95); opacity: 0.9; }
  50% { transform: scale(1.3); opacity: 0.5; }
  100% { transform: scale(0.95); opacity: 0.9; }
}

.detection-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
}

.detection-specs {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.active-download-card {
  background: var(--surface-2);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-chip);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.download-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 8px;
  min-width: 0;
}

.download-head .download-name {
  overflow-wrap: anywhere;
}

.download-name {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-primary);
}

.download-format-chip {
  padding: 3px 8px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-pill);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent);
}

.progress-track {
  width: 100%;
  height: 8px;
  background: var(--surface-3);
  border-radius: var(--radius-pill);
  overflow: hidden;
  position: relative;
}

.progress-fill {
  height: 100%;
  width: 72%;
  background: linear-gradient(90deg, var(--accent), #60a5fa);
  border-radius: var(--radius-pill);
  transition: width 0.4s ease;
  position: relative;
}

.progress-fill::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  animation: progress-shimmer 2s infinite linear;
}

@keyframes progress-shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(200%); }
}

.segment-visualizer {
  display: grid;
  grid-template-columns: repeat(16, 1fr);
  gap: 3px;
  margin-top: 4px;
}

.seg-block {
  height: 6px;
  border-radius: 2px;
  background: var(--surface-3);
}

.seg-block.done { background: var(--accent); }
.seg-block.active { background: #93c5fd; animation: blink 1s infinite alternate; }

@keyframes blink {
  from { opacity: 0.4; }
  to { opacity: 1; }
}

.download-meta-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78rem;
  color: var(--text-secondary);
}

/* ── Section: Comparison Matrix (Problem vs Solution) ────────── */
.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 48px;
}

.compare-card {
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.compare-card--legacy {
  border-color: rgba(239, 68, 68, 0.2);
  background: linear-gradient(180deg, rgba(239, 68, 68, 0.03), transparent);
}

.compare-card--modern {
  border-color: rgba(59, 130, 246, 0.35);
  background: linear-gradient(180deg, rgba(59, 130, 246, 0.06), transparent);
  box-shadow: 0 0 50px -15px var(--accent-glow);
}

.compare-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border-subtle);
}

.compare-title {
  font-size: 1.25rem;
  font-weight: 800;
}

.compare-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.compare-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  font-size: 0.95rem;
}

.compare-item-icon {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  flex: none;
  margin-top: 2px;
}

.compare-card--legacy .compare-item-icon {
  background: var(--danger-soft);
  color: var(--danger);
}

.compare-card--modern .compare-item-icon {
  background: var(--success-soft);
  color: var(--success);
}

.compare-item strong {
  display: block;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.compare-item p {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

/* ── Section: 3-Step Flow Pipeline ───────────────────────────── */
/* 3단계 파이프라인: 분리 카드가 아니라 하나의 머신드 레일(헤어라인 분할) */
.pipeline-rail {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.pipeline-rail .pipeline-card + .pipeline-card {
  border-left: 1px solid var(--border-subtle);
}

.pipeline-card {
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  position: relative;
}

.pipeline-step-badge {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--surface-2);
  border: 1px solid var(--border-medium);
  display: grid;
  place-items: center;
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--accent);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.pipeline-step-badge .icon {
  width: 18px;
  height: 18px;
}

/* 히어로 시뮬레이터 정직성 캡션 */
.sim-caption {
  margin-top: 12px;
  font-size: 0.78rem;
  color: var(--text-muted);
  text-align: center;
}

/* 접근성: 본문 바로가기 + 키보드 포커스 링 */
.skip-link {
  position: fixed;
  top: -48px;
  left: 16px;
  z-index: 200;
  padding: 10px 16px;
  border-radius: var(--radius-chip);
  background: var(--accent);
  color: #ffffff;
  font-weight: 700;
  transition: top 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}
.skip-link:focus-visible { top: 16px; }

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 6px;
}

.pipeline-card h3 {
  font-size: 1.25rem;
  margin-top: 4px;
}

.pipeline-card p {
  font-size: 0.95rem;
  line-height: 1.6;
}

.pipeline-card__visual {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.82rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ── Section: Asymmetric Feature Bento ───────────────────────── */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
}

.bento-cell {
  padding: 36px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}

.bento-cell--span-7 {
  grid-column: span 7;
}

.bento-cell--span-5 {
  grid-column: span 5;
}

.bento-icon-wrapper {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--accent-soft);
  border: 1px solid var(--accent-border);
  display: grid;
  place-items: center;
  color: var(--accent);
  margin-bottom: 24px;
}

.bento-icon-wrapper .icon {
  width: 24px;
  height: 24px;
}

.bento-cell h3 {
  font-size: 1.35rem;
  margin-bottom: 10px;
}

.bento-cell p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

.bento-chips-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 20px;
}

.badge-chip {
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: var(--surface-2);
  border: 1px solid var(--border-medium);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-primary);
}

.badge-chip--accent {
  background: var(--accent-soft);
  border-color: var(--accent-border);
  color: var(--accent);
}

.bento-spec-box {
  margin-top: 24px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-chip);
  padding: 14px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.spec-line {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
}

.spec-line span:first-child { color: var(--text-muted); }
.spec-line span:last-child { color: var(--text-primary); font-weight: 600; }

/* ── Section: Companion & Mobile Ecosystem ───────────────────── */
.mobile-showcase {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 56px;
  align-items: center;
}

.mobile-cards-stage {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.feature-stack-card {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 18px;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.feature-stack-card:hover {
  transform: translateX(6px);
}

.feature-stack-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--accent-soft);
  border: 1px solid var(--accent-border);
  display: grid;
  place-items: center;
  color: var(--accent);
  flex: none;
}

.feature-stack-icon .icon {
  width: 22px;
  height: 22px;
}

.feature-stack-card strong {
  display: block;
  font-size: 1.05rem;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.feature-stack-card span {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

/* ── Section: Cross-Platform Matrix ──────────────────────────── */
.platform-matrix {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 36px;
}

.platform-card {
  padding: 28px 24px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.platform-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--surface-2);
  border: 1px solid var(--border-medium);
  display: grid;
  place-items: center;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.platform-icon .icon {
  width: 28px;
  height: 28px;
}

.platform-card h3 {
  font-size: 1.15rem;
}

.platform-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.platform-status-badge {
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-size: 0.72rem;
  font-weight: 800;
  margin-top: auto;
}

.status--stable {
  background: var(--success-soft);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.status--preview {
  background: var(--warning-soft);
  color: var(--warning);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

/* ── CTA Banner ──────────────────────────────────────────────── */
.cta-banner {
  padding: 72px 48px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  position: relative;
  overflow: hidden;
}

.cta-banner h2 {
  font-size: clamp(2rem, 3.5vw, 3rem);
}

.cta-banner .sub {
  margin-inline: auto;
}

/* ── Footer ──────────────────────────────────────────────────── */
footer {
  padding: 64px 0 80px;
  border-top: 1px solid var(--border-subtle);
  position: relative;
  z-index: 1;
}

.footer__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}

.footer__brand {
  font-weight: 800;
  letter-spacing: 0.04em;
  font-size: 1rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

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

.footer__links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

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

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

/* ── Guide Page Layout ───────────────────────────────────────── */
.guide-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 56px;
  align-items: start;
  padding-bottom: 120px;
}

.guide-toc {
  position: sticky;
  top: calc(var(--nav-h) + 36px);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.guide-toc-title {
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.guide-toc-link {
  display: block;
  padding: 8px 12px;
  border-radius: var(--radius-chip);
  color: var(--text-secondary);
  font-size: 0.92rem;
  font-weight: 600;
  transition: all 0.2s ease;
}

.guide-toc-link:hover {
  color: var(--text-primary);
  background: var(--surface-2);
}

.guide-toc-link.is-active {
  color: var(--accent);
  background: var(--accent-soft);
  font-weight: 700;
}

.guide-step-card {
  padding: 44px;
  margin-bottom: 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

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

.guide-step-head {
  display: flex;
  align-items: center;
  gap: 16px;
}

.guide-step-num {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--accent-soft);
  border: 1px solid var(--accent-border);
  display: grid;
  place-items: center;
  color: var(--accent);
  font-weight: 800;
  font-size: 1.1rem;
}

.guide-step-head h2 {
  font-size: 1.6rem;
}

.guide-step-card p {
  font-size: 1.02rem;
  line-height: 1.7;
}

.guide-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 8px;
}

.guide-list li {
  display: flex;
  gap: 14px;
  font-size: 0.96rem;
  color: var(--text-secondary);
  align-items: flex-start;
}

.guide-list li .icon {
  color: var(--accent);
  margin-top: 3px;
  width: 18px;
  height: 18px;
}

.guide-list li strong {
  color: var(--text-primary);
}

.guide-tip-box {
  background: var(--surface-2);
  border: 1px solid var(--border-medium);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-chip);
  padding: 16px 20px;
  margin-top: 12px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.guide-tip-box strong {
  color: var(--text-primary);
}

/* Shortcuts Table */
.shortcut-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 14px;
  font-size: 0.92rem;
}

.shortcut-table th, .shortcut-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-subtle);
  text-align: left;
}

.shortcut-table th {
  color: var(--text-muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 700;
}

.shortcut-table td:first-child {
  width: 35%;
}

/* FAQ Accordion */
.faq-stack {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 12px;
}

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

.faq-item:hover {
  border-color: var(--border-highlight);
}

.faq-item summary {
  padding: 18px 22px;
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  list-style: none;
  user-select: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-chevron {
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  color: var(--text-muted);
}

.faq-item[open] .faq-chevron {
  transform: rotate(180deg);
  color: var(--accent);
}

.faq-content {
  padding: 0 22px 20px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.65;
}

/* ── Releases Page Layout ────────────────────────────────────── */
.rel-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 48px;
  align-items: start;
  padding-bottom: 120px;
}

.rel-rail {
  position: sticky;
  top: calc(var(--nav-h) + 36px);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.rel-rail__box {
  padding: 24px;
}

.rel-rail__box h3 {
  font-size: 0.88rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.rel-rail__os {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-chip);
  color: var(--text-secondary);
  font-size: 0.92rem;
  font-weight: 600;
  transition: all 0.2s ease;
}

.rel-rail__os:hover {
  background: var(--surface-2);
  color: var(--text-primary);
}

.rel-rail__os .icon {
  width: 20px;
  height: 20px;
  color: var(--text-muted);
}

.rel-featured {
  padding: 40px;
}

.rel-featured__meta {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.rel-featured__tag {
  font-size: 1.85rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.rel-pill {
  display: inline-flex;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  font-weight: 800;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid var(--accent-border);
}

.rel-pill--pre {
  background: var(--warning-soft);
  color: var(--warning);
  border-color: rgba(245, 158, 11, 0.3);
}

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

.rel-featured__notes {
  margin-top: 18px;
  color: var(--text-secondary);
  font-size: 0.96rem;
  line-height: 1.7;
  white-space: pre-line;
}

.dl-groups {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  margin-top: 32px;
}

.dl-group {
  border-radius: var(--radius-chip);
  background: var(--surface-2);
  border: 1px solid var(--border-medium);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.dl-group__head {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--text-primary);
}

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

.dl-asset {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 10px 0;
  border-top: 1px solid var(--border-subtle);
}

.dl-asset:first-of-type {
  border-top: 0;
}

.dl-asset__name {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
  overflow-wrap: anywhere;
}

.dl-asset__size {
  color: var(--text-muted);
  font-size: 0.78rem;
  margin-top: 2px;
}

.dl-reco {
  box-shadow: 0 0 0 2px var(--accent), 0 6px 20px var(--accent-glow) !important;
}

.rel-old {
  margin-top: 36px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.rel-old details {
  border-radius: var(--radius-chip);
  border: 1px solid var(--border-medium);
  background: var(--surface-1);
}

.rel-old summary {
  cursor: pointer;
  padding: 18px 24px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 14px;
  list-style: none;
}

.rel-old summary::-webkit-details-marker {
  display: none;
}

.rel-old summary .rel-featured__date {
  margin-left: auto;
}

.rel-old__body {
  padding: 0 24px 24px;
}

.rel-empty {
  padding: 72px 40px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.rel-empty .icon {
  width: 48px;
  height: 48px;
  color: var(--accent);
}

.rel-empty h2 {
  font-size: 1.5rem;
}

/* ── Reveal Animations ───────────────────────────────────────── */
html.js .reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

html.js .reveal.in {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html.js .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ── Responsive Mechanics ────────────────────────────────────── */
@media (max-width: 1024px) {
  .hero__grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .bento-cell--span-7, .bento-cell--span-5 {
    grid-column: span 12;
  }
  .pipeline-rail {
    grid-template-columns: 1fr;
  }
  .pipeline-rail .pipeline-card + .pipeline-card {
    border-left: 0;
    border-top: 1px solid var(--border-subtle);
  }
  .compare-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .mobile-showcase {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .platform-matrix {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 860px) {
  .nav__links { display: none; }
  .nav__hamburger { display: block; }
  .rel-layout, .guide-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .rel-rail, .guide-toc {
    position: static;
  }
  .dl-groups {
    grid-template-columns: 1fr;
  }
  .section-pad {
    padding: 80px 0;
  }
  .hero {
    padding-top: calc(var(--nav-h) + 40px);
    padding-bottom: 64px;
    min-height: auto;
  }
  .guide-step-card {
    padding: 28px 20px;
  }
  .rel-featured {
    padding: 28px 20px;
  }
}

@media (max-width: 640px) {
  .wrap {
    width: calc(100% - 32px);
  }
  .platform-matrix {
    grid-template-columns: 1fr;
  }
  .hero__cta-group {
    flex-direction: column;
    align-items: stretch;
  }
  .btn {
    width: 100%;
  }
  .simulator-topbar {
    flex-direction: column;
    align-items: flex-start;
  }
  .simulator-tabs {
    width: 100%;
    justify-content: space-between;
  }
  .sim-tab-btn {
    padding: 4px 8px;
    font-size: 0.7rem;
  }
}