/* ============================================================
   AvianAcoustics product page -- same dark-green system as the
   dashboard (frontend/src/index.css)
   ============================================================ */

:root {
  color-scheme: dark;

  /* Surfaces (darkest -> lightest) */
  --bg: #0a110e;
  --surface: #101a16;
  --surface-2: #15221d;
  --surface-3: #1b2b25;
  --border: #233830;
  --border-strong: #2f4a40;

  /* Text */
  --text: #e4eee8;
  --text-muted: #9db3a8;
  --text-faint: #6c8379;

  /* Greens */
  --green-100: #c9f2db;
  --green-300: #7fe0ab;
  --green-400: #4fd08b;
  --green-500: #2fb872;
  --green-600: #22965c;
  --green-700: #1a7347;
  --lime-400: #b5e655;
  --teal-400: #4cc9b0;

  --primary: var(--green-500);
  --primary-hover: var(--green-400);
  --primary-soft: rgba(47, 184, 114, 0.14);
  --primary-ring: rgba(79, 208, 139, 0.35);

  --warning: #e3b45b;
  --warning-soft: rgba(227, 180, 91, 0.14);
  --danger: #ef7d7d;

  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);

  --nav-height: 64px;
  --content-width: 1200px;

  --mono: "JetBrains Mono", ui-monospace, "Cascadia Code", "SFMono-Regular", Consolas, monospace;

  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-height) + 12px); }

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  background:
    radial-gradient(1200px 500px at 85% -10%, rgba(47, 184, 114, 0.10), transparent 60%),
    radial-gradient(900px 400px at -10% 10%, rgba(76, 201, 176, 0.06), transparent 60%),
    var(--bg);
}

h1, h2, h3, h4 { margin: 0; line-height: 1.2; letter-spacing: -0.015em; }
p { margin: 0; }
a { color: var(--green-300); text-decoration: none; }
a:hover { color: var(--green-100); }
img, video { display: block; max-width: 100%; height: auto; }
button { font: inherit; color: inherit; }
::selection { background: var(--primary-ring); }

.wrap { width: min(var(--content-width), calc(100% - 32px)); margin: 0 auto; }
.muted { color: var(--text-muted); }
.faint { color: var(--text-faint); }
.mono { font-family: var(--mono); font-size: 0.9em; }
.accent { color: var(--green-400); }
.lime { color: var(--lime-400); }

/* ============================================================
   Navigation
   ============================================================ */

.navbar {
  position: sticky;
  top: 0;
  z-index: 30;
  height: var(--nav-height);
  background: rgba(10, 17, 14, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.navbar-inner {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  font-size: 18px;
  white-space: nowrap;
}
.brand:hover { color: var(--text); }
.brand-accent { color: var(--green-400); }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-by { font-size: 11.5px; font-weight: 500; color: var(--text-faint); letter-spacing: 0.01em; }

.nav-links { display: flex; gap: 2px; margin-left: auto; }

.nav-link {
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-weight: 500;
  font-size: 14px;
  transition: background 0.15s, color 0.15s;
}
.nav-link:hover { color: var(--text); background: var(--surface-2); }
.nav-link.active { color: var(--green-300); background: var(--primary-soft); }

.menu-toggle {
  display: none;
  margin-left: auto;
  padding: 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  cursor: pointer;
}

.mobile-nav {
  display: none;
  flex-direction: column;
  gap: 2px;
  padding: 8px 16px 14px;
  background: rgba(10, 17, 14, 0.97);
  border-bottom: 1px solid var(--border);
}
.mobile-nav.open { display: flex; }

/* ============================================================
   Buttons, badges, chips
   ============================================================ */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
  white-space: nowrap;
}
.button-primary { background: var(--primary); color: #06110c; }
.button-primary:hover { background: var(--primary-hover); color: #06110c; }
.button-secondary { background: var(--surface-2); border-color: var(--border-strong); color: var(--text); }
.button-secondary:hover { background: var(--surface-3); color: var(--text); }
.button-ghost { background: transparent; color: var(--text-muted); border-color: var(--border); }
.button-ghost:hover { color: var(--text); background: var(--surface-2); }
.button-small { padding: 7px 12px; font-size: 13px; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  background: var(--primary-soft);
  color: var(--green-300);
  border: 1px solid rgba(79, 208, 139, 0.25);
}

.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green-400);
  flex: none;
  animation: live-pulse 2s ease-out infinite;
}

@keyframes live-pulse {
  0% { box-shadow: 0 0 0 0 rgba(79, 208, 139, 0.6); }
  70% { box-shadow: 0 0 0 9px rgba(79, 208, 139, 0); }
  100% { box-shadow: 0 0 0 0 rgba(79, 208, 139, 0); }
}

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

.chip {
  padding: 5px 11px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 500;
}

/* ============================================================
   Hero
   ============================================================ */

.hero { padding: 64px 0 72px; }

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: 48px;
  align-items: center;
}

.hero h1 {
  margin-top: 22px;
  font-size: clamp(44px, 7.4vw, 84px);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1;
}

.hero-tagline {
  margin-top: 18px;
  font-size: clamp(21px, 2.4vw, 28px);
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.hero-lede {
  margin-top: 16px;
  max-width: 560px;
  color: var(--text-muted);
  font-size: 17px;
}

.hero .chips { margin-top: 22px; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }

.hero-wave {
  display: flex;
  align-items: center;
  gap: 3px;
  height: 36px;
  margin-top: 30px;
}
.hero-wave span {
  width: 3px;
  border-radius: 2px;
  background: var(--green-400);
  opacity: 0.85;
  animation: wave 1.6s ease-in-out infinite;
}
@keyframes wave {
  0%, 100% { transform: scaleY(0.25); }
  50% { transform: scaleY(1); }
}

.media-card {
  position: relative;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-strong);
  background: var(--surface);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.media-card video, .media-card img { width: 100%; height: auto; }

.media-label {
  position: absolute;
  left: 14px;
  top: 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(10, 17, 14, 0.82);
  border: 1px solid var(--border-strong);
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
  backdrop-filter: blur(6px);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 12px;
}

/* ============================================================
   Sections
   ============================================================ */

section.block { padding: 88px 0; border-top: 1px solid var(--border); }

.section-head { max-width: 720px; margin-bottom: 40px; }

.eyebrow {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--green-400);
  font-family: var(--mono);
}

.section-head h2 {
  margin-top: 10px;
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 800;
  letter-spacing: -0.025em;
}

.section-head p { margin-top: 14px; color: var(--text-muted); font-size: 17px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.stat-value { font-size: 24px; font-weight: 700; letter-spacing: -0.02em; }
.stat-label { font-size: 12.5px; color: var(--text-muted); }
.stat-card.accent .stat-value { color: var(--green-300); }

/* ---------- 01 Why ---------- */

.why-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 32px;
  align-items: start;
}

.big-number {
  padding: 28px;
  background:
    linear-gradient(135deg, rgba(47, 184, 114, 0.14), transparent 70%),
    var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
.big-number .value {
  font-size: clamp(48px, 7vw, 72px);
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--green-300);
  line-height: 1;
  margin-top: 10px;
}
.big-number .label { margin-top: 10px; font-size: 18px; font-weight: 600; }
.big-number p { margin-top: 10px; color: var(--text-muted); font-size: 15px; }

.tile-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 4px;
  margin-top: 22px;
}
.tile-grid span {
  aspect-ratio: 1;
  border-radius: 3px;
  background: var(--border-strong);
  transition: background 0.5s, transform 0.5s;
}
.tile-grid span.kept { background: var(--green-400); }
.tile-grid.filtered span:not(.kept) { background: var(--surface-3); }

.tile-legend { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px 14px; margin-top: 10px; font-size: 13px; color: var(--text-muted); }
.dot { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 6px; vertical-align: -1px; }
.dot-rec { background: var(--surface-3); border: 1px solid var(--border-strong); }
.dot-sent { background: var(--green-400); }

.problems { display: flex; flex-direction: column; gap: 10px; }

.problem-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
}
.problem-row > div { padding: 14px 16px; }
.problem-row .ps { border-right: 1px solid var(--border); }
.problem-row .tag {
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.problem-row .ps .tag { color: var(--text-faint); }
.problem-row .ps { color: var(--text-muted); }
.problem-row .sol { background: linear-gradient(90deg, rgba(47, 184, 114, 0.07), transparent); }
.problem-row .sol .tag { color: var(--green-400); }

/* ---------- 02 How ---------- */

.pipeline {
  position: relative;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 14px;
}

.pipeline::before {
  content: "";
  position: absolute;
  left: 8%;
  right: 8%;
  top: 34px;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--border-strong) 0 8px, transparent 8px 14px);
}

.pipeline .pulse {
  position: absolute;
  top: 29px;
  left: 8%;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--lime-400);
  box-shadow: 0 0 14px var(--lime-400);
  animation: travel 6s linear infinite;
}
@keyframes travel {
  0% { left: 8%; opacity: 0; }
  5% { opacity: 1; }
  95% { opacity: 1; }
  100% { left: calc(92% - 12px); opacity: 0; }
}

.stage { position: relative; text-align: center; }

.stage-icon {
  position: relative;
  z-index: 1;
  width: 70px;
  height: 70px;
  margin: 0 auto;
  display: grid;
  place-items: center;
  border-radius: 18px;
  background: var(--surface-2);
  border: 1px solid var(--border-strong);
  color: var(--green-300);
  transition: border-color 0.3s, box-shadow 0.3s, color 0.3s;
}
.stage.lit .stage-icon {
  border-color: var(--green-400);
  box-shadow: 0 0 0 4px var(--primary-soft), 0 0 24px rgba(79, 208, 139, 0.25);
  color: var(--lime-400);
}

.stage .where {
  display: inline-block;
  margin-top: 14px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-faint);
}
.stage h3 { margin-top: 4px; font-size: 16px; }
.stage p { margin-top: 6px; font-size: 13.5px; color: var(--text-muted); }

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 48px;
}

.detail-card h3 { display: flex; align-items: center; gap: 10px; font-size: 18px; }
.detail-card .sub { margin-top: 4px; color: var(--text-muted); font-size: 14px; }

.steps { list-style: none; margin: 18px 0 0; padding: 0; counter-reset: step; }
.steps li {
  position: relative;
  padding: 0 0 14px 38px;
  font-size: 14.5px;
  color: var(--text-muted);
}
.steps li:last-child { padding-bottom: 0; }
.steps li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 12px;
  font-weight: 700;
  background: var(--primary-soft);
  color: var(--green-300);
  border: 1px solid rgba(79, 208, 139, 0.3);
}
.steps li::after {
  content: "";
  position: absolute;
  left: 11.5px;
  top: 28px;
  bottom: 2px;
  width: 1px;
  background: var(--border-strong);
}
.steps li:last-child::after { display: none; }
.steps strong { color: var(--text); font-weight: 600; }
.steps code {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--green-300);
  background: var(--surface-2);
  padding: 1px 6px;
  border-radius: 5px;
}

/* ---------- 03 Try it ---------- */

.demo { padding: 0; overflow: hidden; }

.demo-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}

.control-group { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.control-label { font-size: 12px; font-family: var(--mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-faint); }

.segmented {
  display: inline-flex;
  padding: 3px;
  border-radius: 10px;
  background: var(--bg);
  border: 1px solid var(--border);
}
.segmented button {
  padding: 6px 11px;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}
.segmented button[aria-pressed="true"] { background: var(--primary-soft); color: var(--green-300); }

.switch {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 13.5px;
  color: var(--text-muted);
  user-select: none;
}
.switch input { position: absolute; opacity: 0; pointer-events: none; }
.switch .track {
  width: 36px;
  height: 20px;
  border-radius: 999px;
  background: var(--surface-3);
  border: 1px solid var(--border-strong);
  position: relative;
  transition: background 0.2s;
}
.switch .track::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--text-muted);
  transition: transform 0.2s, background 0.2s;
}
.switch input:checked + .track { background: var(--primary-soft); border-color: var(--green-600); }
.switch input:checked + .track::after { transform: translateX(16px); background: var(--green-400); }
.switch input:focus-visible + .track { outline: 2px solid var(--green-400); outline-offset: 2px; }

input[type="range"] { accent-color: var(--green-500); width: 110px; }

.demo-canvas-wrap { position: relative; padding: 18px 20px 6px; }
.demo canvas { width: 100%; display: block; }
.canvas-caption { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 12.5px; color: var(--text-faint); margin: 6px 0 4px; }
.legend { display: inline-flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.legend i { display: inline-block; width: 18px; height: 3px; border-radius: 2px; vertical-align: middle; margin-right: 6px; }

.demo-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding: 16px 20px 20px;
}
.demo-stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; flex: 1 1 520px; }
.demo-actions { display: flex; flex-wrap: wrap; gap: 8px; }

.demo-note {
  padding: 12px 20px;
  border-top: 1px solid var(--border);
  font-size: 13.5px;
  color: var(--text-muted);
  background: var(--surface-2);
  min-height: 46px;
}

/* ---------- 04 In action ---------- */

.player { display: grid; grid-template-columns: 300px minmax(0, 1fr); gap: 16px; align-items: start; }

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

.tab {
  display: block;
  width: 100%;
  text-align: left;
  padding: 14px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.tab:hover { border-color: var(--border-strong); }
.tab[aria-selected="true"] { border-color: var(--green-600); background: linear-gradient(90deg, var(--primary-soft), var(--surface)); }
.tab .t { display: flex; justify-content: space-between; gap: 10px; font-weight: 600; font-size: 15px; }
.tab .t span { font-family: var(--mono); font-size: 12px; color: var(--text-faint); font-weight: 500; }
.tab .d { margin-top: 3px; font-size: 13px; color: var(--text-muted); }

.player-caption { margin-top: 12px; font-size: 14px; color: var(--text-muted); }

/* ---------- 05 Dashboard features ---------- */

.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }

.feature {
  padding: 20px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--surface);
  transition: border-color 0.2s, transform 0.2s;
}
.feature:hover { border-color: var(--border-strong); transform: translateY(-2px); }
.feature .num { font-family: var(--mono); font-size: 12px; color: var(--green-400); }
.feature h3 { margin-top: 10px; font-size: 16.5px; }
.feature p { margin-top: 6px; font-size: 14px; color: var(--text-muted); }

.detection-demo {
  margin-top: 28px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 16px;
}

.det-feed { display: flex; flex-direction: column; gap: 8px; margin-top: 14px; }
.det-row {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  border: 1px solid var(--border);
  animation: slide-in 0.5s ease-out;
}
.det-row.new { border-color: var(--lime-400); box-shadow: 0 0 0 3px rgba(181, 230, 85, 0.12); }
.det-row .species-name { font-weight: 600; font-size: 14.5px; }
.det-row .species-sci { font-style: italic; font-size: 12.5px; color: var(--text-faint); }
.det-row .meta { font-size: 12px; color: var(--text-faint); font-family: var(--mono); }
.conf {
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  background: var(--primary-soft);
  color: var(--green-300);
}
.conf.mid { background: rgba(181, 230, 85, 0.12); color: var(--lime-400); }
@keyframes slide-in { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: none; } }

/* ---------- 06 Hardware ---------- */

.hw-grid { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: 20px; align-items: start; }

.board {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-strong);
  cursor: pointer;
  background: var(--surface);
}
.board img { width: 100%; transition: opacity 0.5s; }
.board img.on { position: absolute; inset: 0; opacity: 0; }
.board.powered img.on { opacity: 1; }

.board-hint {
  position: absolute;
  left: 50%;
  bottom: 14px;
  transform: translateX(-50%);
  padding: 7px 14px;
  border-radius: 999px;
  background: rgba(10, 17, 14, 0.85);
  border: 1px solid var(--border-strong);
  font-size: 12.5px;
  font-weight: 600;
  white-space: nowrap;
}

.hotspot {
  position: absolute;
  transform: translate(-50%, -50%);
  display: flex;
  align-items: center;
  gap: 6px;
  pointer-events: none;
}
.hotspot::before {
  content: "";
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid var(--lime-400);
  background: rgba(181, 230, 85, 0.25);
  flex: none;
}
.hotspot span {
  padding: 3px 8px;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 600;
  background: rgba(10, 17, 14, 0.88);
  border: 1px solid rgba(181, 230, 85, 0.5);
  color: var(--green-100);
  white-space: nowrap;
}
.board.powered .hotspot { opacity: 0; }
.hotspot { transition: opacity 0.3s; }

.hw-photos { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 16px; }
.hw-photos figure { margin: 0; }
.hw-photos img { width: 100%; aspect-ratio: 976 / 560; object-fit: cover; border-radius: var(--radius); border: 1px solid var(--border); }
.hw-photos figcaption { margin-top: 6px; font-size: 13px; color: var(--text-muted); }

.terminal {
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-strong);
  background: #07100c;
  overflow: hidden;
  font-family: var(--mono);
  font-size: 13px;
}
.terminal-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  color: var(--text-faint);
  font-size: 12px;
}
.terminal-bar i { width: 10px; height: 10px; border-radius: 50%; background: var(--surface-3); }
.terminal-bar b { margin-left: 8px; font-weight: 500; }
.terminal-body { padding: 16px 18px 18px; }
.terminal .prompt { color: var(--green-400); }
.spec { display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 7px 16px; margin-top: 12px; }
.spec dt { color: var(--lime-400); }
.spec dd { margin: 0; color: var(--text-muted); }
.cursor { display: inline-block; width: 8px; height: 15px; background: var(--green-400); vertical-align: -2px; animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.foot { margin-top: 14px; font-size: 12.5px; color: var(--text-faint); }

/* ---------- 07 Where ---------- */

.use-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.use { padding: 20px; border-radius: var(--radius-lg); border: 1px solid var(--border); background: var(--surface); }
.use h3 { font-size: 16.5px; display: flex; gap: 10px; align-items: center; }
.use h3 svg { color: var(--green-400); flex: none; }
.use p { margin-top: 6px; font-size: 14px; color: var(--text-muted); }

/* ---------- CTA + footer ---------- */

.cta {
  margin-top: 56px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: center;
  padding: 32px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--green-700);
  background:
    radial-gradient(600px 200px at 0% 0%, rgba(47, 184, 114, 0.18), transparent 70%),
    var(--surface);
}
.cta h2 { font-size: clamp(26px, 3.2vw, 34px); font-weight: 800; }
.cta p { margin-top: 8px; color: var(--text-muted); }
.cta .url { margin-top: 12px; font-family: var(--mono); font-size: 13px; color: var(--text-faint); word-break: break-all; }

.footer { border-top: 1px solid var(--border); padding: 24px 0 32px; color: var(--text-faint); font-size: 13px; }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; }

/* ---------- Reveal ---------- */

.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}

/* ============================================================
   Responsive
   ============================================================ */

@media (max-width: 1080px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .nav-links .nav-link.opt { display: none; }
}

@media (max-width: 920px) {
  .hero { padding: 40px 0 56px; }
  .hero-grid, .why-grid, .hw-grid, .split, .detection-demo, .player { grid-template-columns: 1fr; }
  .use-grid { grid-template-columns: 1fr 1fr; }
  .nav-links { display: none; }
  .menu-toggle { display: inline-flex; }
  .navbar .nav-gh { display: none; }
  .tabs { flex-direction: row; overflow-x: auto; scrollbar-width: none; }
  .tab { min-width: 220px; }
  .pipeline { grid-template-columns: repeat(3, 1fr); row-gap: 30px; }
  .pipeline::before, .pipeline .pulse { display: none; }
  .cta { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  section.block { padding: 64px 0; }
  .problem-row { grid-template-columns: 1fr; }
  .problem-row .ps { border-right: 0; border-bottom: 1px solid var(--border); }
  .pipeline { grid-template-columns: 1fr 1fr; }
  .feature-grid, .use-grid, .hw-photos { grid-template-columns: 1fr; }
  .demo-stats { grid-template-columns: 1fr 1fr; }
  .spec { grid-template-columns: 1fr; gap: 2px; }
  .spec dd { margin-bottom: 8px; }
  .hero-stats .stat-value { font-size: 19px; }
  .cta { padding: 24px; }
}