/* ============================================================
   SUS DETECT — landing site
   Forensic / technical / restrained-cyberpunk design system
   ============================================================ */

:root {
  --bg: #070a0e;
  --bg-2: #0a0e14;
  --panel: #0d1219;
  --panel-2: #10161f;
  --line: rgba(150, 170, 200, 0.13);
  --line-2: rgba(150, 170, 200, 0.26);
  --text: #e8eef5;
  --muted: #9aa9ba;
  --faint: #67768a;
  --accent: #3fd8c7;
  --accent-dim: rgba(63, 216, 199, 0.12);
  --accent-ink: #052a26;
  --amber: #f0b25a;
  --amber-dim: rgba(240, 178, 90, 0.12);
  --flag: #f27171;
  --flag-dim: rgba(242, 113, 113, 0.12);
  --radius: 10px;
  --radius-sm: 7px;
  --font-ui: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
  --nav-h: 64px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

img, svg { display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font: inherit; cursor: pointer; }

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

.container {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Background layer: grid + glow + noise ---------- */
.bg-layer {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(900px 480px at 50% -80px, rgba(63, 216, 199, 0.07), transparent 70%),
    radial-gradient(700px 500px at 85% 110%, rgba(63, 216, 199, 0.04), transparent 70%),
    var(--bg);
}
.bg-layer::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, black 30%, transparent 75%);
}
.bg-layer::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- Typography helpers ---------- */
h1, h2, h3, h4 { line-height: 1.15; letter-spacing: -0.02em; font-weight: 650; }

h1 { font-size: clamp(2.5rem, 5.2vw, 3.9rem); letter-spacing: -0.03em; }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.4rem); }
h3 { font-size: 1.06rem; font-weight: 600; }

.h1-accent, .h-accent { color: var(--accent); }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}
.eyebrow-amber { color: var(--amber); }

.status-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, border-color 0.15s ease;
  white-space: nowrap;
}
.btn svg { width: 15px; height: 15px; }
.btn-lg { padding: 14px 26px; }
.btn-sm { padding: 9px 18px; font-size: 0.88rem; }
.btn-block { width: 100%; }

.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: 0 0 0 0 rgba(63, 216, 199, 0);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 28px rgba(63, 216, 199, 0.28);
  background: #57e2d3;
}
.btn-primary:active { transform: translateY(0); }

.btn-ghost {
  border-color: var(--line-2);
  color: var(--text);
  background: rgba(255, 255, 255, 0.02);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 3px; }

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: rgba(7, 10, 14, 0.6);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease, background 0.25s ease;
}
.nav.scrolled { border-bottom-color: var(--line); background: rgba(7, 10, 14, 0.85); }
.nav-inner { display: flex; align-items: center; gap: 36px; }

.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand-mark { width: 26px; height: 26px; color: var(--accent); flex: none; }
.brand-word { font-weight: 700; letter-spacing: 0.06em; font-size: 0.98rem; }
.brand-word-dim { font-weight: 500; color: var(--muted); }

.nav-links { display: flex; gap: 26px; margin-left: auto; }
.nav-links a {
  font-size: 0.9rem;
  color: var(--muted);
  transition: color 0.15s ease;
  position: relative;
}
.nav-links a:hover { color: var(--text); }
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -5px;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width 0.2s ease;
}
.nav-links a:hover::after { width: 100%; }

/* ---------- Hero ---------- */
.hero { padding: 84px 0 104px; position: relative; }

.hero-grid {
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  gap: 64px;
  align-items: center;
}

.hero-sub {
  color: var(--muted);
  font-size: 1.08rem;
  max-width: 54ch;
  margin: 22px 0 34px;
}

.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-micro {
  margin-top: 22px;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--faint);
  text-transform: uppercase;
}

/* ---------- Hero visual: analysis window ---------- */
.hero-visual { position: relative; }

.app-window {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line-2);
  border-radius: 12px;
  box-shadow:
    0 40px 90px rgba(0, 0, 0, 0.55),
    0 0 0 1px rgba(0, 0, 0, 0.4),
    0 0 90px rgba(63, 216, 199, 0.05);
  overflow: hidden;
  font-size: 0.82rem;
}

/* corner ticks — viewfinder feel */
.tick {
  position: absolute;
  width: 14px; height: 14px;
  border-color: var(--accent);
  border-style: solid;
  border-width: 0;
  opacity: 0.85;
  z-index: 5;
}
.tick.tl { top: -1px; left: -1px; border-top-width: 2px; border-left-width: 2px; }
.tick.tr { top: -1px; right: -1px; border-top-width: 2px; border-right-width: 2px; }
.tick.bl { bottom: -1px; left: -1px; border-bottom-width: 2px; border-left-width: 2px; }
.tick.br { bottom: -1px; right: -1px; border-bottom-width: 2px; border-right-width: 2px; }

.app-titlebar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 14px;
  border-bottom: 1px solid var(--line);
  background: var(--panel-2);
}
.app-mark { width: 16px; height: 16px; color: var(--accent); flex: none; }
.app-title { font-size: 0.68rem; letter-spacing: 0.1em; color: var(--muted); }
.app-titlebar .pill { margin-left: auto; }
.win-controls { display: flex; gap: 7px; margin-left: 6px; }
.win-controls i {
  width: 9px; height: 9px;
  border-radius: 2px;
  border: 1px solid var(--line-2);
}

.app-body {
  display: grid;
  grid-template-columns: 1.12fr 1fr;
  min-height: 380px;
}

/* media pane */
.app-media {
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  padding: 14px;
  gap: 10px;
  background: #0a0e15;
}
.photo {
  position: relative;
  flex: 1;
  min-height: 260px;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--line);
  background:
    radial-gradient(150px 90px at 72% 28%, rgba(255, 190, 120, 0.30), transparent 70%),
    radial-gradient(220px 130px at 18% 72%, rgba(80, 140, 200, 0.16), transparent 70%),
    radial-gradient(90px 60px at 38% 24%, rgba(200, 220, 255, 0.10), transparent 70%),
    linear-gradient(180deg, #18222f 0%, #111a28 44%, #0a101a 46%, #070b12 100%);
}
.photo::before { /* skyline silhouettes */
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg,
    transparent 0 14%, rgba(0, 0, 0, 0.42) 14% 27%, transparent 27% 44%,
    rgba(0, 0, 0, 0.36) 44% 58%, transparent 58% 76%, rgba(0, 0, 0, 0.45) 76% 88%, transparent 88%);
  mask-image: linear-gradient(180deg, transparent 34%, black 46%);
  -webkit-mask-image: linear-gradient(180deg, transparent 34%, black 46%);
}
.photo::after { /* analysis grid + scanline texture */
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(63, 216, 199, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(63, 216, 199, 0.06) 1px, transparent 1px),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.018) 0 1px, transparent 1px 3px);
  background-size: 44px 44px, 44px 44px, auto;
}

.heatmap {
  position: absolute;
  width: 52%; aspect-ratio: 1;
  left: 44%; top: 12%;
  background: radial-gradient(circle,
    rgba(242, 113, 113, 0.55) 0%,
    rgba(240, 178, 90, 0.30) 38%,
    transparent 68%);
  filter: blur(7px);
  mix-blend-mode: screen;
  z-index: 2;
}
.hm2 {
  width: 30%; left: 10%; top: 58%;
  background: radial-gradient(circle, rgba(240, 178, 90, 0.28) 0%, transparent 65%);
  opacity: 0.7;
}

.scanline {
  position: absolute;
  left: 0; right: 0; top: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  box-shadow: 0 0 14px rgba(63, 216, 199, 0.7);
  opacity: 0.55;
  z-index: 3;
  animation: scan 7s ease-in-out infinite;
}
@keyframes scan {
  0%, 100% { top: 4%; }
  50% { top: 94%; }
}

.media-bracket {
  position: absolute;
  width: 18px; height: 18px;
  border-color: rgba(63, 216, 199, 0.7);
  border-style: solid;
  border-width: 0;
  z-index: 4;
}
.mb-tl { top: 10px; left: 10px; border-top-width: 1.5px; border-left-width: 1.5px; }
.mb-tr { top: 10px; right: 10px; border-top-width: 1.5px; border-right-width: 1.5px; }
.mb-bl { bottom: 10px; left: 10px; border-bottom-width: 1.5px; border-left-width: 1.5px; }
.mb-br { bottom: 10px; right: 10px; border-bottom-width: 1.5px; border-right-width: 1.5px; }

.media-tags {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  font-size: 0.64rem;
  letter-spacing: 0.08em;
  color: var(--faint);
}
.tag-flag { color: var(--flag); }

/* signals pane */
.app-panel { display: flex; flex-direction: column; }
.panel-head {
  padding: 12px 16px;
  font-size: 0.64rem;
  letter-spacing: 0.14em;
  color: var(--faint);
  border-bottom: 1px solid var(--line);
}

.signal-list { flex: 1; display: flex; flex-direction: column; }
.sig { padding: 10px 16px; border-bottom: 1px solid var(--line); }
.sig:last-child { border-bottom: 0; }
.sig-top { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.sig-name { font-weight: 600; font-size: 0.8rem; }
.exp {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 0.56rem;
  letter-spacing: 0.1em;
  color: var(--amber);
  border: 1px solid rgba(240, 178, 90, 0.4);
  border-radius: 3px;
  padding: 1px 4px;
  vertical-align: 2px;
  margin-left: 4px;
}
.sig-note { color: var(--faint); font-size: 0.72rem; margin: 3px 0 7px; }

.sig-bar { height: 3px; background: rgba(150, 170, 200, 0.12); border-radius: 2px; overflow: hidden; }
.sig-bar i {
  display: block;
  height: 100%;
  width: var(--w, 10%);
  background: var(--accent);
  border-radius: 2px;
}
.sig-bar i.fill-review { background: var(--amber); }
.sig-bar i.fill-flag { background: var(--flag); }

.pill {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  padding: 3px 8px;
  border-radius: 4px;
  border: 1px solid;
  flex: none;
}
.pill-clear { color: var(--accent); border-color: rgba(63, 216, 199, 0.4); background: var(--accent-dim); }
.pill-review { color: var(--amber); border-color: rgba(240, 178, 90, 0.4); background: var(--amber-dim); }
.pill-flag { color: var(--flag); border-color: rgba(242, 113, 113, 0.45); background: var(--flag-dim); }

.panel-meta {
  border-top: 1px solid var(--line);
  padding: 10px 16px;
  font-size: 0.64rem;
  letter-spacing: 0.06em;
  color: var(--faint);
  display: grid;
  gap: 4px;
}
.panel-meta span { color: var(--accent); margin-right: 8px; }

.app-statusbar {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 14px;
  border-top: 1px solid var(--line);
  background: var(--panel-2);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  color: var(--faint);
}
.app-statusbar span:first-child { color: var(--muted); }

/* floating chips */
.chip {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  background: rgba(13, 18, 25, 0.92);
  border: 1px solid var(--line-2);
  border-radius: 8px;
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  color: var(--muted);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(6px);
  z-index: 6;
}
.chip-a { top: 26px; right: -18px; animation: float 9s ease-in-out infinite; }
.chip-b { bottom: 34px; left: -22px; animation: float 9s ease-in-out 1.4s infinite; }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-7px); } }

.dot { width: 6px; height: 6px; border-radius: 50%; flex: none; }
.dot-amber { background: var(--amber); box-shadow: 0 0 7px var(--amber); }
.dot-teal { background: var(--accent); box-shadow: 0 0 7px var(--accent); }

/* ---------- Positioning band ---------- */
.band {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(13, 18, 25, 0.6), rgba(10, 14, 20, 0.2));
  padding: 88px 0;
}
.band-statement { font-size: clamp(1.6rem, 3.4vw, 2.5rem); max-width: 22ch; }
.band-copy { color: var(--muted); max-width: 62ch; margin-top: 20px; font-size: 1.02rem; }

.band-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 46px;
}
.mini-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(13, 18, 25, 0.6);
  padding: 24px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.mini-card:hover { border-color: var(--line-2); transform: translateY(-2px); }
.mini-card .icon { width: 22px; height: 22px; color: var(--accent); margin-bottom: 16px; }
.mini-card p { color: var(--muted); font-size: 0.92rem; margin-top: 8px; }

/* ---------- Sections ---------- */
.section { padding: 104px 0; scroll-margin-top: calc(var(--nav-h) + 12px); }
.section-alt {
  background: linear-gradient(180deg, rgba(13, 18, 25, 0.45), rgba(13, 18, 25, 0.15));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.section-head { max-width: 640px; margin-bottom: 56px; }
.section-sub { color: var(--muted); margin-top: 16px; font-size: 1.02rem; }
.section-sub em { color: var(--text); font-style: normal; border-bottom: 1px solid var(--accent); }

/* ---------- Steps ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.step {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 26px 24px 28px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.step:hover { border-color: rgba(63, 216, 199, 0.4); transform: translateY(-2px); }
.step-num {
  font-size: 0.78rem;
  color: var(--accent);
  letter-spacing: 0.2em;
  margin-bottom: 40px;
  display: inline-block;
  border-bottom: 1px solid rgba(63, 216, 199, 0.35);
  padding-bottom: 6px;
}
.step p:last-child { color: var(--muted); font-size: 0.93rem; margin-top: 10px; }

/* ---------- Signal grid ---------- */
.signal-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.sig-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.sig-card:hover { border-color: var(--line-2); transform: translateY(-2px); }
.sig-tag {
  font-size: 0.66rem;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.exp-badge {
  font-size: 0.56rem;
  color: var(--amber);
  border: 1px solid rgba(240, 178, 90, 0.4);
  border-radius: 3px;
  padding: 2px 6px;
  letter-spacing: 0.14em;
}
.sig-card > p:not(.sig-tag):not(.caveat) { color: var(--muted); font-size: 0.92rem; margin-top: 9px; }
.caveat {
  margin-top: auto;
  padding-top: 14px;
  font-size: 0.8rem;
  color: var(--amber);
  opacity: 0.9;
  display: flex;
  gap: 8px;
}
.caveat::before { content: "▲"; font-size: 0.6rem; line-height: 1.9; }

/* ---------- Limitations ---------- */
.limit-panel {
  border: 1px solid rgba(240, 178, 90, 0.3);
  border-radius: 14px;
  background:
    linear-gradient(180deg, rgba(240, 178, 90, 0.04), transparent 40%),
    var(--panel);
  padding: clamp(28px, 5vw, 56px);
}
.limit-head { max-width: 620px; margin-bottom: 40px; }
.limit-list { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 32px; }
.limit-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  border-top: 1px solid var(--line);
  padding-top: 16px;
}
.limit-mark {
  flex: none;
  width: 20px; height: 20px;
  border-radius: 50%;
  border: 1px solid rgba(240, 178, 90, 0.55);
  color: var(--amber);
  font-size: 0.72rem;
  font-weight: 700;
  display: grid;
  place-items: center;
  margin-top: 2px;
}
.limit-list p { color: var(--muted); font-size: 0.93rem; }
.limit-list strong { color: var(--text); font-weight: 600; }
.limit-close { margin-top: 40px; font-size: 1.05rem; font-weight: 500; }
.limit-close a { color: var(--accent); border-bottom: 1px solid rgba(63, 216, 199, 0.4); }
.limit-close a:hover { border-bottom-color: var(--accent); }

/* ---------- Who grid ---------- */
.who-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.who-tile {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 22px 24px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.who-tile:hover { border-color: rgba(63, 216, 199, 0.4); transform: translateY(-2px); }
.who-tile h3 { font-size: 0.98rem; }
.who-tile p { color: var(--muted); font-size: 0.88rem; margin-top: 7px; }

/* ---------- Beta ---------- */
.beta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.beta-lists {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin-top: 36px;
}
.beta-lists h4 {
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 14px;
}
.check-list li {
  position: relative;
  padding-left: 24px;
  color: var(--muted);
  font-size: 0.92rem;
  margin-bottom: 10px;
}
.check-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 7px;
  width: 11px; height: 6px;
  border-left: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
  transform: rotate(-45deg);
}
.beta-req {
  margin-top: 34px;
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--faint);
  border-top: 1px solid var(--line);
  padding-top: 18px;
}

/* form */
.beta-form-wrap { position: relative; }
.beta-form {
  position: relative;
  border: 1px solid var(--line-2);
  border-radius: 12px;
  background: var(--panel);
  padding: 32px;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.45);
}
.beta-form h3 { font-size: 1.25rem; }
.form-sub { color: var(--muted); font-size: 0.9rem; margin: 8px 0 26px; }

.beta-form label {
  display: block;
  font-size: 0.84rem;
  font-weight: 600;
  margin: 18px 0 7px;
}
.optional { color: var(--faint); font-weight: 400; }

.beta-form input,
.beta-form select,
.beta-form textarea {
  width: 100%;
  background: #0a0f16;
  border: 1px solid var(--line-2);
  border-radius: var(--radius-sm);
  color: var(--text);
  font: inherit;
  font-size: 0.92rem;
  padding: 12px 14px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.beta-form textarea { resize: vertical; min-height: 76px; }
.beta-form select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%239aa9ba' stroke-width='1.6' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; }
.beta-form select:invalid { color: var(--faint); }
.beta-form input::placeholder, .beta-form textarea::placeholder { color: var(--faint); }
.beta-form input:focus, .beta-form select:focus, .beta-form textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(63, 216, 199, 0.15);
}
.beta-form .btn { margin-top: 26px; }

.hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }

.form-status { min-height: 18px; margin-top: 14px; font-size: 0.74rem; letter-spacing: 0.04em; }
.form-status.ok { color: var(--accent); }
.form-status.err { color: var(--flag); }
.form-status a { color: var(--accent); text-decoration: underline; }

.form-privacy { margin-top: 10px; font-size: 0.76rem; color: var(--faint); }

/* ---------- FAQ ---------- */
.faq-container { max-width: 780px; }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary {
  list-style: none;
  cursor: pointer;
  padding: 22px 44px 22px 0;
  font-weight: 600;
  font-size: 1.02rem;
  position: relative;
  transition: color 0.15s ease;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary:hover { color: var(--accent); }
.faq-list summary::after {
  content: "+";
  position: absolute;
  right: 6px; top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--accent);
  transition: transform 0.2s ease;
}
.faq-list details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq-list details p {
  color: var(--muted);
  font-size: 0.95rem;
  padding: 0 40px 24px 0;
  max-width: 66ch;
}

/* ---------- Final CTA ---------- */
.final-cta {
  padding: 120px 0;
  text-align: center;
  border-top: 1px solid var(--line);
  background:
    radial-gradient(600px 300px at 50% 120%, rgba(63, 216, 199, 0.09), transparent 70%);
}
.final-cta h2 { font-size: clamp(1.9rem, 4vw, 2.9rem); margin-bottom: 34px; }

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--line);
  background: var(--bg-2);
  padding: 64px 0 36px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 44px;
  border-bottom: 1px solid var(--line);
}
.footer-brand p { color: var(--muted); font-size: 0.9rem; margin-top: 16px; }
.footer-col { display: flex; flex-direction: column; gap: 11px; }
.footer-col h4 {
  font-size: 0.66rem;
  letter-spacing: 0.2em;
  color: var(--faint);
  font-weight: 500;
  margin-bottom: 6px;
}
.footer-col a { color: var(--muted); font-size: 0.9rem; width: fit-content; transition: color 0.15s ease; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  padding-top: 26px;
  font-size: 0.8rem;
  color: var(--faint);
}
.footer-disclaimer { max-width: 52ch; }

/* ---------- Reveal animation ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease var(--d, 0s), transform 0.7s ease var(--d, 0s);
}
[data-reveal].in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .hero-grid { grid-template-columns: 1fr; gap: 56px; }
  .hero { padding-top: 64px; }
  .hero-visual { max-width: 620px; }
  .chip-a { right: 0; }
  .chip-b { left: 0; }
}

@media (max-width: 920px) {
  .nav-links { display: none; }
  .nav-cta { margin-left: auto; }
  .band-cards, .steps, .signal-grid, .who-grid { grid-template-columns: 1fr 1fr; }
  .beta-grid { grid-template-columns: 1fr; gap: 48px; }
  .limit-list { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .section { padding: 76px 0; }
  .band { padding: 64px 0; }
  .band-cards, .steps, .signal-grid, .who-grid, .beta-lists { grid-template-columns: 1fr; }
  .app-body { grid-template-columns: 1fr; }
  .app-media { border-right: 0; border-bottom: 1px solid var(--line); }
  .photo { min-height: 200px; }
  .app-statusbar { flex-direction: column; gap: 3px; }
  .hero-ctas .btn { flex: 1; }
  .beta-form { padding: 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .chip { display: none; }
}

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