/* Lab Experiments — design system (follows browser light / dark preference) */
:root {
  color-scheme: light dark;
  --radius: 14px;
  --radius-sm: 10px;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: "Cascadia Code", "Consolas", "Courier New", monospace;
  --max: 1120px;
  --nav-h: 88px;
  --suite-tab-active-fg: #061018;

  /* Default / dark tokens */
  --bg: #070b12;
  --bg-elevated: #0d1420;
  --bg-card: #111a28;
  --bg-card-hover: #162033;
  --border: rgba(120, 170, 255, 0.12);
  --border-strong: rgba(120, 170, 255, 0.28);
  --text: #e8eef8;
  --text-muted: #8b9bb4;
  --text-dim: #5c6b82;
  --accent: #3d9cfd;
  --accent-soft: rgba(61, 156, 253, 0.14);
  --accent-glow: rgba(61, 156, 253, 0.35);
  --cyan: #2ee6c5;
  --amber: #f0b429;
  --violet: #a78bfa;
  --rose: #fb7185;
  --nav-bg: rgba(7, 11, 18, 0.78);
  --surface-soft: rgba(17, 26, 40, 0.75);
  --surface-muted: rgba(17, 26, 40, 0.55);
  --stat-bg: rgba(17, 26, 40, 0.7);
  --tag-bg: rgba(255, 255, 255, 0.05);
  --empty-bg: rgba(17, 26, 40, 0.55);
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
  --shadow-soft: 0 4px 14px rgba(0, 0, 0, 0.35);
  --glow-1: rgba(61, 156, 253, 0.18);
  --glow-2: rgba(46, 230, 197, 0.08);
  --glow-3: rgba(167, 139, 250, 0.07);
  --bg-gradient-top: #070b12;
  --bg-gradient-bottom: #0a101a;
  --btn-primary-from: #3d9cfd;
  --btn-primary-to: #2b7fd4;
  --btn-primary-shadow: rgba(61, 156, 253, 0.3);
  --tag-version-border: rgba(46, 230, 197, 0.3);
  --tag-version-bg: rgba(46, 230, 197, 0.08);
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f4f7fc;
    --bg-elevated: #ffffff;
    --bg-card: #ffffff;
    --bg-card-hover: #f0f5fb;
    --border: rgba(30, 60, 110, 0.12);
    --border-strong: rgba(30, 60, 110, 0.22);
    --text: #0f1724;
    --text-muted: #4a5b73;
    --text-dim: #6b7c94;
    --accent: #2b7fd4;
    --accent-soft: rgba(43, 127, 212, 0.12);
    --accent-glow: rgba(43, 127, 212, 0.22);
    --cyan: #0d9f86;
    --amber: #b8860b;
    --violet: #7c5cbf;
    --rose: #d4546a;
    --nav-bg: rgba(244, 247, 252, 0.88);
    --surface-soft: rgba(255, 255, 255, 0.92);
    --surface-muted: rgba(232, 239, 248, 0.85);
    --stat-bg: rgba(255, 255, 255, 0.92);
    --tag-bg: rgba(15, 23, 36, 0.04);
    --empty-bg: rgba(232, 239, 248, 0.75);
    --shadow: 0 14px 40px rgba(20, 40, 80, 0.1);
    --shadow-soft: 0 4px 14px rgba(20, 40, 80, 0.08);
    --glow-1: rgba(61, 156, 253, 0.14);
    --glow-2: rgba(13, 159, 134, 0.08);
    --glow-3: rgba(124, 92, 191, 0.07);
    --bg-gradient-top: #f4f7fc;
    --bg-gradient-bottom: #e8eef8;
    --btn-primary-from: #3d9cfd;
    --btn-primary-to: #2b7fd4;
    --btn-primary-shadow: rgba(43, 127, 212, 0.28);
    --tag-version-border: rgba(13, 159, 134, 0.35);
    --tag-version-bg: rgba(13, 159, 134, 0.1);
  }
}

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

html {
  scroll-behavior: smooth;
  overflow-x: clip;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, var(--glow-1), transparent 55%),
    radial-gradient(ellipse 40% 30% at 90% 20%, var(--glow-2), transparent 50%),
    radial-gradient(ellipse 35% 25% at 10% 60%, var(--glow-3), transparent 50%),
    linear-gradient(180deg, var(--bg-gradient-top) 0%, var(--bg-gradient-bottom) 100%);
}

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

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

.text-emphasis {
  color: var(--text);
  font-weight: 700;
}

.lead-muted {
  color: var(--text-muted);
  margin: 1rem 0 1.5rem;
}

.page-empty {
  padding: 4rem 0;
}

.app-meta-start {
  justify-content: flex-start;
  margin-bottom: 0.65rem;
}

.btn-full {
  width: 100%;
}

.btn-disabled,
.btn[aria-disabled="true"] {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
  box-shadow: none;
}

.download-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.15rem;
}

.download-intro {
  margin-bottom: 1rem;
}

.download-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 0;
}

.download-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.85rem;
  padding: 0.9rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--stat-bg);
}

.download-item-info {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  min-width: 0;
}

.download-item-info strong {
  color: var(--text);
  font-size: 0.95rem;
}

.download-item-info span {
  color: var(--text-dim);
  font-size: 0.8rem;
}

.download-side-list {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  margin-top: 0.9rem;
}

.download-side-note {
  margin-top: 0.75rem;
  font-size: 0.88rem;
}

/* Per-product accent (used by cards and detail pages) */
.app-accent-aggregator {
  --card-accent: #3d9cfd;
}

.app-accent-alert-manager {
  --card-accent: #f0b429;
}

.app-accent-focus-shield {
  --card-accent: #8fbc8f;
}

.app-accent-drift {
  --card-accent: #c4b59a;
}

.app-accent-musiclab {
  --card-accent: #f08060;
}

.app-accent-drift-journal {
  --card-accent: #6b8a9a;
}

.app-accent-paper-orbit {
  --card-accent: #cbb89a;
}

.app-accent-rule-thief {
  --card-accent: #c9a227;
}

.app-accent-temporal-layers {
  --card-accent: #6ea8c8;
}

.app-accent-tax-haven-tycoon {
  --card-accent: #2ec4b6;
}

.app-accent-tiny-conspiracies {
  --card-accent: #8b1e3f;
}

/* —— Layout —— */
.container {
  width: min(100% - 2.5rem, var(--max));
  margin-inline: auto;
}

/* —— Nav —— */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border);
  background: var(--nav-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(100% - 2.5rem, var(--max));
  margin-inline: auto;
  gap: 1.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  min-width: 0;
}

.brand-mark {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: block;
  object-fit: contain;
  flex-shrink: 0;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  padding: 4px;
  box-shadow: var(--shadow-soft);
}

.brand-divider {
  width: 1px;
  height: 2.5rem;
  flex-shrink: 0;
  background: linear-gradient(
    180deg,
    transparent,
    var(--border-strong),
    transparent
  );
}

.brand-text {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.2rem;
  min-width: 0;
  line-height: 1.1;
}

.brand-title {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.35rem 0.45rem;
}

.brand-title-lab,
.brand-title-exp {
  font-size: 1.35rem;
  font-weight: 750;
  letter-spacing: -0.02em;
  color: var(--text);
}

.brand-title-lab {
  letter-spacing: 0.04em;
}

.nav-toggle {
  display: none;
  appearance: none;
  border: 1px solid var(--border-strong);
  background: var(--bg-elevated);
  color: var(--text);
  width: 44px;
  height: 44px;
  border-radius: 10px;
  padding: 0;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  flex-shrink: 0;
  transition: background 0.15s, border-color 0.15s;
}

.nav-toggle:hover {
  background: var(--accent-soft);
  border-color: var(--accent);
}

.nav-toggle:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.nav-toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 1px;
  background: currentColor;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
}

.nav-links a {
  padding: 0.45rem 0.85rem;
  border-radius: 8px;
  font-size: 0.92rem;
  color: var(--text-muted);
  transition: color 0.15s, background 0.15s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
  background: var(--accent-soft);
}

/* —— Site intro (below header) —— */
.site-intro {
  padding: 1.75rem 0 0.5rem;
}

.intro-panel {
  position: relative;
  overflow: hidden;
  border-radius: calc(var(--radius) + 4px);
  border: 1px solid var(--border-strong);
  background: var(--bg-card);
  box-shadow: var(--shadow);
}

.intro-panel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--accent), var(--cyan));
  border-radius: 4px 0 0 4px;
}

.intro-panel-glow {
  position: absolute;
  inset: -40% auto auto -10%;
  width: min(70%, 520px);
  height: 140%;
  pointer-events: none;
  background: radial-gradient(ellipse at 20% 30%, var(--glow-1), transparent 62%);
  opacity: 0.9;
}

.intro-content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr minmax(140px, 200px);
  gap: 1.5rem 2rem;
  align-items: stretch;
  padding: 1.75rem 1.75rem 1.75rem 2rem;
  width: 100%;
  max-width: none;
}

.intro-copy {
  min-width: 0;
}

.intro-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-bottom: 0.9rem;
  padding: 0.28rem 0.7rem;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.intro-kicker::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan);
}

.intro-lead {
  color: var(--text);
  font-size: clamp(1.15rem, 2.2vw, 1.4rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.45;
  margin-bottom: 1rem;
}

.intro-body {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 0;
}

.intro-metrics {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  justify-content: center;
}

.intro-metric {
  padding: 1rem 1.1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--stat-bg);
  text-align: center;
  box-shadow: var(--shadow-soft);
}

.intro-metric strong {
  display: block;
  font-size: 1.85rem;
  font-weight: 750;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 0.25rem;
  background: linear-gradient(120deg, var(--accent), var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.intro-metric span {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--text-muted);
}

@media (max-width: 720px) {
  .intro-content {
    grid-template-columns: 1fr;
  }

  .intro-metrics {
    flex-direction: column;
  }

  .intro-metric {
    flex: 1;
  }
}

/* —— Hero —— */
.hero {
  padding: 2.5rem 0 3.5rem;
  position: relative;
}

.suite-panel {
  margin-bottom: 2.25rem;
  scroll-margin-top: calc(var(--nav-h) + 12px);
}

.suite-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(220px, 0.95fr);
  gap: 1.5rem 2rem;
  align-items: center;
}

.suite-copy {
  min-width: 0;
}

.hero-icons {
  position: relative;
  min-height: 280px;
  height: 100%;
  width: 100%;
  border: none;
  background: transparent;
  box-shadow: none;
  overflow: hidden;
}

.hero-icon-float {
  position: absolute;
  display: grid;
  place-items: center;
  border-radius: 24%;
  background: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-soft), 0 12px 28px rgba(0, 0, 0, 0.18);
  transform: rotate(var(--rot, 0deg));
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  overflow: hidden;
}

.hero-icon-float::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  box-shadow: inset 0 0 0 3px color-mix(in srgb, var(--card-accent, var(--accent)) 35%, transparent);
  pointer-events: none;
}

.hero-icon-float img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: inherit;
}

.hero-icon-emoji {
  background: color-mix(in srgb, var(--card-accent, var(--accent)) 16%, var(--bg-elevated));
}

.hero-icon-float:hover {
  transform: rotate(var(--rot, 0deg)) scale(1.06);
  box-shadow: var(--shadow), 0 16px 36px rgba(0, 0, 0, 0.22);
  z-index: 10 !important;
}

.suite-tabs {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding: 0.3rem;
  margin-bottom: 1.15rem;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: var(--surface-soft);
}

.suite-tab {
  appearance: none;
  border: none;
  cursor: pointer;
  font: inherit;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--text-muted);
  background: transparent;
  transition: color 0.15s, background 0.15s, box-shadow 0.15s;
}

.suite-tab:hover {
  color: var(--text);
  background: var(--accent-soft);
}

.suite-tab.is-active {
  color: var(--suite-tab-active-fg);
  background: linear-gradient(145deg, var(--btn-primary-from), var(--cyan));
  box-shadow: 0 6px 18px var(--btn-primary-shadow);
}

.suite-tab:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.empty-catalogue {
  grid-column: 1 / -1;
  padding: 2.5rem 1.5rem;
  border-radius: var(--radius);
  border: 1px dashed var(--border-strong);
  background: var(--empty-bg);
  text-align: center;
}

.empty-catalogue p {
  color: var(--text-muted);
  max-width: 42ch;
  margin-inline: auto;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  font-weight: 750;
  letter-spacing: -0.035em;
  line-height: 1.12;
  max-width: 18ch;
  margin-bottom: 1.15rem;
}

.hero h1 em {
  font-style: normal;
  background: linear-gradient(120deg, var(--accent), var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-lead {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 52ch;
  margin-bottom: 0;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.7rem 1.25rem;
  border-radius: 10px;
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s, background 0.15s, border-color 0.15s, box-shadow 0.15s;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(145deg, var(--btn-primary-from), var(--btn-primary-to));
  color: #fff;
  box-shadow: 0 8px 24px var(--btn-primary-shadow);
}

.btn-primary:hover {
  box-shadow: 0 12px 28px var(--accent-glow);
}

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

.btn-ghost:hover {
  background: var(--bg-card);
  border-color: var(--accent);
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  max-width: 520px;
}

.stat {
  padding: 1rem 1.1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--stat-bg);
}

.stat strong {
  display: block;
  font-size: 1.55rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 0.15rem;
}

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

/* —— Sections —— */
section {
  padding: 3.5rem 0;
}

.section-head {
  margin-bottom: 2rem;
}

.section-kicker {
  font-size: 0.78rem;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.section-head h2 {
  font-size: clamp(1.6rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 0.5rem;
}

.section-head p {
  color: var(--text-muted);
  max-width: 58ch;
}

/* —— App grid —— */
.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 280px), 1fr));
  gap: 1.25rem;
}

.app-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 1.4rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-card);
  box-shadow: var(--shadow);
  transition: border-color 0.2s, transform 0.2s, background 0.2s;
  overflow: hidden;
  min-height: 100%;
}

.app-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--card-accent, var(--accent));
  opacity: 0.9;
}

.app-card:hover {
  border-color: var(--border-strong);
  background: var(--bg-card-hover);
  transform: translateY(-3px);
}

.app-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.app-icon {
  width: 48px;
  height: 48px;
  border-radius: 24%;
  display: grid;
  place-items: center;
  font-size: 1.35rem;
  background: color-mix(in srgb, var(--card-accent, var(--accent)) 18%, transparent);
  border: 1px solid color-mix(in srgb, var(--card-accent, var(--accent)) 35%, transparent);
  flex-shrink: 0;
  object-fit: cover;
  overflow: hidden;
}

img.app-icon,
img.page-icon,
.app-icon-img {
  padding: 0;
  background: transparent;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
  object-fit: cover;
  overflow: hidden;
}

.app-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  justify-content: flex-end;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  background: var(--tag-bg);
  border: 1px solid var(--border);
  color: var(--text-muted);
}

.tag-version {
  color: var(--cyan);
  border-color: var(--tag-version-border);
  background: var(--tag-version-bg);
}

.app-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.2rem;
}

.app-card .subtitle {
  font-size: 0.85rem;
  color: var(--card-accent, var(--accent));
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.app-card .desc {
  color: var(--text-muted);
  font-size: 0.92rem;
  flex: 1;
  margin-bottom: 1.25rem;
}

.app-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.audience-line {
  font-size: 0.8rem;
  color: var(--text-dim);
  line-height: 1.35;
  max-width: 16rem;
}

.link-arrow {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--accent);
  white-space: nowrap;
  flex-shrink: 0;
}

.app-card:hover .link-arrow {
  color: var(--cyan);
}

/* —— About —— */
.about-page {
  padding: 0 0 3.5rem;
}

.about-page-title {
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 750;
  letter-spacing: -0.03em;
  margin-bottom: 0.5rem;
}

.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 1.5rem;
}

.about-card,
.feature-list {
  padding: 1.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-card);
}

.about-top-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(260px, 0.9fr);
  gap: 1.25rem;
  margin-bottom: 1.5rem;
  align-items: start;
}

.about-main-column {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  min-width: 0;
}

.about-block-title {
  font-size: 1.25rem;
  font-weight: 750;
  letter-spacing: -0.02em;
  color: var(--text);
  margin: 0.2rem 0 1rem;
  line-height: 1.25;
}

.about-prose p {
  color: var(--text-muted);
  font-size: 1.02rem;
  line-height: 1.75;
  max-width: none;
}

.developers-panel {
  position: relative;
  overflow: hidden;
}

.developers-panel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--violet), var(--accent));
}

.developers-lead {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.55;
  margin-bottom: 1.15rem;
}

.developer-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 0;
  margin: 0;
}

.developer-card {
  display: flex;
  gap: 0.9rem;
  align-items: flex-start;
}

.developer-avatar {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  color: #061018;
  background: linear-gradient(145deg, var(--btn-primary-from), var(--cyan));
  box-shadow: 0 8px 20px var(--btn-primary-shadow);
}

.developer-avatar svg {
  width: 28px;
  height: 28px;
}

.developer-info {
  min-width: 0;
}

.developer-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
  margin: 0 0 0.15rem;
}

.developer-role {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent);
  margin: 0 0 0.55rem;
}

.developer-bio {
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--text-muted);
  margin: 0 0 0.75rem;
}

.developer-skills {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding: 0;
  margin: 0;
}

.developer-skills li {
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--tag-bg);
  color: var(--text-dim);
  font-size: 0.72rem;
  font-weight: 600;
}

@media (max-width: 800px) {
  .about-top-grid {
    grid-template-columns: 1fr;
  }
}

.about-card p + p {
  margin-top: 0.9rem;
}

.about-card p {
  color: var(--text-muted);
}

.about-mission-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  align-items: stretch;
}

.about-mission {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.about-mission::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--accent), var(--cyan));
}

.about-mission .about-block-title {
  margin-bottom: 0.75rem;
}

.about-mission p:not(.section-kicker) {
  font-size: 0.98rem;
  line-height: 1.65;
  margin: 0;
  flex: 1;
}

@media (max-width: 800px) {
  .about-mission-grid {
    grid-template-columns: 1fr;
  }
}

/* —— Contact (About page) —— */
.contact-section {
  margin-top: 1.75rem;
  scroll-margin-top: calc(var(--nav-h) + 12px);
}

#get-in-touch {
  scroll-margin-top: calc(var(--nav-h) + 16px);
  outline: none;
}

#get-in-touch:focus-visible {
  border-radius: 8px;
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.contact-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 1.5rem 2rem;
  padding: 1.75rem;
  border-radius: calc(var(--radius) + 2px);
  border: 1px solid var(--border-strong);
  background: var(--bg-card);
  box-shadow: var(--shadow);
}

.contact-intro h2 {
  font-size: clamp(1.4rem, 2.5vw, 1.75rem);
  font-weight: 750;
  letter-spacing: -0.03em;
  margin: 0.35rem 0 0.75rem;
  color: var(--text);
}

.contact-intro > p {
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 1.25rem;
}

.contact-details {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  padding: 0;
  margin: 0;
}

.contact-details li {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.contact-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.contact-details a {
  color: var(--accent);
  font-weight: 600;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.contact-details a:hover {
  color: var(--cyan);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.contact-field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.contact-field label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
}

.contact-field input,
.contact-field textarea {
  font: inherit;
  color: var(--text);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.7rem 0.85rem;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.contact-field input::placeholder,
.contact-field textarea::placeholder {
  color: var(--text-dim);
}

.contact-field input:focus,
.contact-field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.contact-field textarea {
  resize: vertical;
  min-height: 120px;
}

.contact-form .btn {
  align-self: flex-start;
  margin-top: 0.25rem;
}

.contact-form-note {
  margin: 0;
  font-size: 0.88rem;
  color: var(--cyan);
}

@media (max-width: 800px) {
  .contact-panel {
    grid-template-columns: 1fr;
  }
}

.feature-list h2,
.feature-list h3 {
  font-size: 1rem;
  margin-bottom: 1rem;
}

.feature-list ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.feature-list li {
  display: flex;
  gap: 0.7rem;
  align-items: flex-start;
  color: var(--text-muted);
  font-size: 0.92rem;
}

.feature-list li::before {
  content: "";
  width: 8px;
  height: 8px;
  margin-top: 0.45rem;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
  flex-shrink: 0;
}

/* —— App detail page —— */
.page-hero {
  padding: 3rem 0 2rem;
  border-bottom: 1px solid var(--border);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.breadcrumb a:hover {
  color: var(--accent);
}

.breadcrumb .sep {
  opacity: 0.4;
}

.page-hero-row {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 1.25rem;
}

.page-icon {
  width: 64px;
  height: 64px;
  border-radius: 24%;
  display: grid;
  place-items: center;
  font-size: 1.75rem;
  background: color-mix(in srgb, var(--card-accent, var(--accent)) 18%, transparent);
  border: 1px solid color-mix(in srgb, var(--card-accent, var(--accent)) 35%, transparent);
  flex-shrink: 0;
  object-fit: cover;
  overflow: hidden;
}

img.page-icon {
  width: 72px;
  height: 72px;
  padding: 0;
}

.page-hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 750;
  letter-spacing: -0.03em;
  margin-bottom: 0.25rem;
}

.page-hero .subtitle {
  color: var(--card-accent, var(--accent));
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.page-hero .lead {
  color: var(--text-muted);
  max-width: 60ch;
}

.detail-grid {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 1.5rem;
  padding: 2.5rem 0 4rem;
  align-items: start;
}

.detail-main,
.detail-side {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.panel {
  padding: 1.4rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-card);
}

.panel h2 {
  font-size: 1.05rem;
  margin-bottom: 0.85rem;
  letter-spacing: -0.02em;
}

.panel p,
.panel li {
  color: var(--text-muted);
  font-size: 0.94rem;
}

.panel p + p {
  margin-top: 0.75rem;
}

.panel ul {
  padding-left: 1.15rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.kv {
  display: grid;
  gap: 0.65rem;
}

.kv-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 0.65rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

.kv-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.kv-row dt {
  color: var(--text-muted);
}

.kv-row dd {
  font-weight: 600;
  text-align: right;
  font-family: var(--mono);
  font-size: 0.82rem;
}

.kv-row dd.kv-text {
  font-family: var(--font);
  font-size: 0.88rem;
  font-weight: 500;
  max-width: 14rem;
  line-height: 1.4;
}

.panel-tip p {
  line-height: 1.55;
}

/* —— Footer —— */
.footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  margin-top: 1rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 1rem 1.5rem;
  align-items: center;
  text-align: right;
}

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

.footer a {
  color: var(--text-muted);
}

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

/* —— Responsive —— */
@media (max-width: 800px) {
  :root {
    --nav-h: 72px;
  }

  .container,
  .nav-inner {
    width: min(100% - 1.75rem, var(--max));
  }

  .nav {
    height: auto;
    min-height: var(--nav-h);
    padding: 0.65rem 0;
  }

  .nav-inner {
    flex-wrap: wrap;
    gap: 0.75rem 1rem;
    row-gap: 0.85rem;
  }

  .brand-mark {
    width: 44px;
    height: 44px;
    border-radius: 12px;
  }

  .brand-divider {
    height: 2rem;
  }

  .brand-title-lab,
  .brand-title-exp {
    font-size: 1.15rem;
  }

  .nav-toggle {
    display: inline-flex;
    margin-left: auto;
  }

  .nav-links {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0.2rem;
    padding: 0.35rem 0 0.15rem;
    border-top: 1px solid var(--border);
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-links a {
    display: block;
    padding: 0.85rem 0.9rem;
    font-size: 1rem;
  }

  .about-grid,
  .detail-grid,
  .suite-layout {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 1.75rem 0 2.5rem;
  }

  .hero h1 {
    max-width: none;
  }

  .hero-icons {
    min-height: 200px;
    max-width: 420px;
    margin-inline: auto;
  }

  .suite-tabs {
    display: flex;
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
  }

  .suite-tab {
    flex: 1 0 auto;
    text-align: center;
    min-height: 44px;
  }

  .stats {
    grid-template-columns: 1fr;
    max-width: none;
  }

  .intro-content {
    padding: 1.35rem 1.2rem 1.35rem 1.35rem;
  }

  .page-hero {
    padding: 2rem 0 1.5rem;
  }

  .detail-grid {
    padding: 1.75rem 0 3rem;
  }

  .contact-panel {
    padding: 1.25rem;
  }

  .contact-form .btn {
    width: 100%;
    align-self: stretch;
  }

  .download-item {
    flex-direction: column;
    align-items: stretch;
  }

  .download-item .btn {
    width: 100%;
  }

  .download-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .download-actions .btn {
    width: 100%;
  }

  .app-card-footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .audience-line {
    max-width: none;
  }

  .kv-row {
    flex-direction: column;
    gap: 0.25rem;
  }

  .kv-row dd,
  .kv-row dd.kv-text {
    text-align: left;
    max-width: none;
  }

  section {
    padding: 2.5rem 0;
  }
}

@media (max-width: 520px) {
  :root {
    --nav-h: 64px;
  }

  .container,
  .nav-inner {
    width: min(100% - 1.25rem, var(--max));
  }

  .brand-divider {
    display: none;
  }

  .brand-title-lab,
  .brand-title-exp {
    font-size: 1.05rem;
  }

  .hero {
    padding: 1.25rem 0 2rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-icons {
    min-height: 170px;
  }

  .intro-panel {
    border-radius: var(--radius);
  }

  .intro-content {
    padding: 1.15rem 1rem 1.15rem 1.15rem;
    gap: 1rem;
  }

  .intro-lead {
    font-size: 1.05rem;
  }

  .intro-body {
    font-size: 0.95rem;
  }

  .about-card,
  .feature-list,
  .panel {
    padding: 1.15rem;
  }

  .app-card {
    padding: 1.15rem;
  }

  .app-grid {
    gap: 1rem;
  }

  .btn {
    min-height: 44px;
  }

  .footer-inner {
    justify-content: center;
    text-align: center;
  }
}