/* ═══════════════════════════════════════════════════════════════
   Telebot AI — landing page
   Design language: Apple-clean (mlxserve.com school) + dark mode
   ═══════════════════════════════════════════════════════════════ */

/* ── tokens (light: verbatim mlxserve.com) ───────────────────── */
:root {
  --white: #ffffff;
  --bg: #ffffff;
  --bg-alt: #f5f5f7;
  --text-primary: #1d1d1f;
  --text-secondary: #6e6e73;
  --text-tertiary: #86868b;
  --blue: #0071e3;
  --blue-hover: #0077ed;
  --blue-subtle: rgba(0, 113, 227, 0.08);
  --teal: #00c6fb;
  --green: #30d158;
  --purple: #5e5ce6;
  --orange: #f7a41d;
  --border: rgba(0, 0, 0, 0.08);
  --radius: 16px;
  --radius-sm: 10px;
  --code-bg: #1d1d1f;
  --code-text: #e5e5e7;
  --ink: #08080c;
  --shadow-card: 0 2px 20px rgba(0, 0, 0, 0.04), 0 0 0 1px rgba(0, 0, 0, 0.04);
  --shadow-elevated: 0 8px 40px rgba(0, 0, 0, 0.08), 0 0 0 1px rgba(0, 0, 0, 0.04);
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text',
          'Helvetica Neue', Helvetica, Arial, sans-serif;
}

[data-theme="dark"] {
  --bg: #000000;
  --bg-alt: #1d1d1f;
  --text-primary: #f5f5f7;
  --text-secondary: #a1a1a6;
  --text-tertiary: #86868b;
  --blue: #2997ff;
  --blue-hover: #3aa2ff;
  --blue-subtle: rgba(41, 151, 255, 0.14);
  --border: rgba(255, 255, 255, 0.12);
  --code-bg: #f5f5f7;
  --code-text: #1d1d1f;
  --ink: #f5f5f7;
  --shadow-card: 0 2px 24px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.06);
  --shadow-elevated: 0 8px 48px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.08);
}

/* ── base ─────────────────────────────────────────────────────── */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  line-height: 1.5;
  overflow-x: hidden;
  transition: background .3s ease, color .3s ease;
}

::selection { background: var(--blue-subtle); }

a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--blue-hover); }

code.mono {
  font-family: var(--mono);
  font-size: .82em;
  background: var(--blue-subtle);
  color: var(--blue);
  border-radius: 6px;
  padding: .12em .4em;
}

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

/* ── nav ──────────────────────────────────────────────────────── */
#nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
  border-bottom: 1px solid transparent;
}
#nav.scrolled {
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom-color: var(--border);
}
.nav-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  gap: 24px;
}
.brand { display: flex; align-items: center; gap: 8px; color: var(--text-primary); font-weight: 600; letter-spacing: -.01em; }
.brand:hover { color: var(--text-primary); }
.brand-mark { font-size: 19px; line-height: 1; display: flex; }
.brand-mark img { width: 24px; height: 24px; border-radius: 6px; display: block; border: 1px solid var(--border); }
.brand-name { font-size: 15px; }
.nav-links { display: flex; gap: 26px; margin-left: 12px; }
.nav-links a { color: var(--text-secondary); font-size: 14px; font-weight: 500; }
.nav-links a:hover { color: var(--text-primary); }
.nav-actions { margin-left: auto; display: flex; align-items: center; gap: 14px; }

.theme-toggle {
  display: flex; align-items: center; justify-content: center;
  width: 34px; height: 34px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}
.theme-toggle:hover { color: var(--text-primary); border-color: var(--text-tertiary); }
.icon-moon { display: none; }
[data-theme="dark"] .icon-sun { display: none; }
[data-theme="dark"] .icon-moon { display: block; }

/* ── buttons ──────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 980px;
  font-weight: 600;
  letter-spacing: -.01em;
  padding: 12px 24px;
  font-size: 15px;
  transition: transform .15s ease, box-shadow .2s ease, background .2s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0) scale(.98); }
/* replace the browser's default focus ring with a soft, on-design one */
.btn:focus { outline: none; }
.btn:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; }

.btn-primary {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 4px 16px rgba(0, 113, 227, 0.28);
}
.btn-primary:hover { background: var(--blue-hover); color: #fff; box-shadow: 0 6px 24px rgba(0, 113, 227, 0.35); }

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

.btn-sm { padding: 7px 18px; font-size: 13px; }
.btn-lg { padding: 14px 28px; font-size: 17px; }
.btn-xl { padding: 18px 40px; font-size: 19px; }

/* ── hero ─────────────────────────────────────────────────────── */
.hero {
  padding: 148px 24px 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero-inner { position: relative; z-index: 2; }

.hero-glow { position: absolute; inset: 0; pointer-events: none; overflow: hidden; z-index: 0; }
.hero-glow span {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: .45;
  animation: drift 18s ease-in-out infinite;
}
.glow-1 { width: 480px; height: 480px; background: var(--blue-subtle); top: -140px; left: 50%; margin-left: -420px; }
.glow-2 { width: 420px; height: 420px; background: rgba(0, 198, 251, .16); top: -80px; right: 50%; margin-right: -400px; animation-delay: -6s; }
.glow-3 { width: 360px; height: 360px; background: rgba(94, 92, 230, .12); top: 260px; left: 50%; margin-left: -80px; animation-delay: -12s; }
@keyframes drift {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -24px) scale(1.06); }
  66% { transform: translate(-24px, 18px) scale(.97); }
}

.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .02em;
  color: var(--text-secondary);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 980px;
  padding: 6px 16px;
  margin-bottom: 26px;
}

.hero-title { display: none; }
.hero-icon {
  width: 56px;
  height: 56px;
  flex-shrink: 0;
  border-radius: 14px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-elevated);
  overflow: hidden;
}
.hero-icon img {
  width: 100%;
  height: 100%;
  display: block;
  animation: floaty 5.5s ease-in-out 1.4s infinite alternate;
}
@keyframes floaty {
  from { transform: translateY(0); }
  to { transform: translateY(-7px); }
}

h1 {
  font-size: clamp(46px, 7.4vw, 80px);
  font-weight: 700;
  letter-spacing: -.04em;
  line-height: 1.02;
  max-width: 820px;
  margin: 0 auto 22px;
  animation: fadeUp .6s ease .1s both;
}
h1 .grad {
  background: linear-gradient(120deg, var(--blue) 10%, var(--teal) 90%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: clamp(17px, 2.2vw, 21px);
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 34px;
  letter-spacing: -.01em;
  animation: fadeUp .6s ease .2s both;
}

.hero-cta { display: flex; align-items: center; justify-content: center; gap: 14px; flex-wrap: wrap; animation: fadeUp .6s ease .3s both; }
.cta-primary { display: flex; align-items: center; gap: 14px; }
.hero-meta { margin-top: 18px; font-size: 12.5px; color: var(--text-tertiary); animation: fadeUp .6s ease .4s both; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── hero mockup ──────────────────────────────────────────────── */
.mockup {
  position: relative;
  z-index: 2;
  max-width: 460px;
  margin: 56px auto 0;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow-elevated);
  text-align: left;
  animation: fadeUp .8s ease .45s both;
  overflow: hidden;
}
.mockup-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-alt);
}
.traffic { display: flex; gap: 6px; }
.traffic i { width: 11px; height: 11px; border-radius: 50%; display: block; }
.traffic i:nth-child(1) { background: #ff5f57; }
.traffic i:nth-child(2) { background: #febc2e; }
.traffic i:nth-child(3) { background: #28c840; }
.mockup-title { font-size: 12px; color: var(--text-secondary); display: flex; align-items: center; gap: 6px; }
.mockup-title img, .msg-head img { width: 14px; height: 14px; border-radius: 4px; display: block; }
.mockup-menu { margin-left: auto; color: var(--text-tertiary); }

.mockup-body {
  padding: 18px 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: var(--bg);
}
.msg {
  max-width: 82%;
  padding: 10px 14px;
  border-radius: 16px;
  font-size: 13.5px;
  line-height: 1.45;
  position: relative;
}
.msg-user {
  align-self: flex-end;
  background: var(--blue);
  color: #fff;
  border-bottom-right-radius: 5px;
  box-shadow: 0 2px 8px rgba(0, 113, 227, .25);
}
.msg-bot {
  align-self: flex-start;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-bottom-left-radius: 5px;
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.msg-head { font-size: 10.5px; color: var(--text-tertiary); }

.msg-typing { align-self: flex-start; display: flex; gap: 5px; padding: 13px 16px; background: var(--bg-alt); border: 1px solid var(--border); border-bottom-left-radius: 5px; }
.msg-typing span { width: 7px; height: 7px; border-radius: 50%; background: var(--text-tertiary); animation: blink 1.2s infinite; }
.msg-typing span:nth-child(2) { animation-delay: .2s; }
.msg-typing span:nth-child(3) { animation-delay: .4s; }
@keyframes blink { 0%, 60%, 100% { opacity: .25; transform: translateY(0); } 30% { opacity: 1; transform: translateY(-3px); } }

.reminder-card {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 9px 12px;
}
.rc-icon { font-size: 16px; }
.rc-body { display: flex; flex-direction: column; }
.rc-title { font-size: 12.5px; font-weight: 600; }
.rc-time { font-size: 10.5px; color: var(--text-tertiary); }
.rc-check {
  margin-left: auto;
  width: 19px; height: 19px;
  border-radius: 50%;
  background: var(--green);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}

.msg-dice { flex-direction: row; align-items: center; gap: 10px; perspective: 240px; }
.dice {
  width: 42px; height: 42px;
  position: relative;
  transform-style: preserve-3d;
  /* a real die: white with dark pips, in BOTH themes */
  animation: diceRoll 5s cubic-bezier(.45, .05, .35, 1) infinite;
  will-change: transform;
}
.face {
  position: absolute; inset: 0;
  border-radius: 10px;
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.1);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
  backface-visibility: hidden;
}
/* pip layouts via radial gradients (dark pips on white, both themes) */
.f1 { transform: rotateY(0deg) translateZ(21px); background-image: radial-gradient(circle at 50% 50%, #1d1d1f 2.6px, transparent 3.2px); }
.f2 { transform: rotateY(90deg) translateZ(21px); background-image: radial-gradient(circle at 26% 26%, #1d1d1f 2.6px, transparent 3.2px), radial-gradient(circle at 74% 74%, #1d1d1f 2.6px, transparent 3.2px); }
.f3 { transform: rotateY(180deg) translateZ(21px); background-image: radial-gradient(circle at 26% 26%, #1d1d1f 2.6px, transparent 3.2px), radial-gradient(circle at 50% 50%, #1d1d1f 2.6px, transparent 3.2px), radial-gradient(circle at 74% 74%, #1d1d1f 2.6px, transparent 3.2px); }
.f4 { transform: rotateY(-90deg) translateZ(21px); background-image: radial-gradient(circle at 26% 26%, #1d1d1f 2.6px, transparent 3.2px), radial-gradient(circle at 26% 74%, #1d1d1f 2.6px, transparent 3.2px), radial-gradient(circle at 74% 26%, #1d1d1f 2.6px, transparent 3.2px), radial-gradient(circle at 74% 74%, #1d1d1f 2.6px, transparent 3.2px); }
.f5 { transform: rotateX(90deg) translateZ(21px); background-image: radial-gradient(circle at 26% 26%, #1d1d1f 2.6px, transparent 3.2px), radial-gradient(circle at 26% 74%, #1d1d1f 2.6px, transparent 3.2px), radial-gradient(circle at 74% 26%, #1d1d1f 2.6px, transparent 3.2px), radial-gradient(circle at 74% 74%, #1d1d1f 2.6px, transparent 3.2px), radial-gradient(circle at 50% 50%, #1d1d1f 2.6px, transparent 3.2px); }
.f6 { transform: rotateX(-90deg) translateZ(21px); background-image: radial-gradient(circle at 26% 26%, #1d1d1f 2.6px, transparent 3.2px), radial-gradient(circle at 26% 74%, #1d1d1f 2.6px, transparent 3.2px), radial-gradient(circle at 74% 26%, #1d1d1f 2.6px, transparent 3.2px), radial-gradient(circle at 74% 74%, #1d1d1f 2.6px, transparent 3.2px), radial-gradient(circle at 50% 26%, #1d1d1f 2.6px, transparent 3.2px), radial-gradient(circle at 50% 74%, #1d1d1f 2.6px, transparent 3.2px); }
/* tumble through faces 1 → 5 → 2 → 6 → 4, land on 3, hold, re-roll */
@keyframes diceRoll {
  0%   { transform: rotateX(0deg) rotateY(0deg); }
  4%   { transform: rotateX(-90deg) rotateY(0deg); }
  8%   { transform: rotateX(-90deg) rotateY(-90deg); }
  12%  { transform: rotateX(90deg) rotateY(-90deg); }
  16%  { transform: rotateX(90deg) rotateY(90deg); }
  20%  { transform: rotateX(0deg) rotateY(180deg); }
  22%  { transform: rotateX(0deg) rotateY(180deg) scale(1.14); }
  24%  { transform: rotateX(0deg) rotateY(180deg); }
  100% { transform: rotateX(0deg) rotateY(180deg); }
}
@media (prefers-reduced-motion: reduce) {
  .dice { animation: none; transform: rotateX(0deg) rotateY(180deg); }
}
.msg-cmd { padding: 8px 16px; width: fit-content; }
.cmd {
  font-family: var(--mono);
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: .2px;
  color: #fff;
}
.dice-text { font-size: 13.5px; }
.dice-text strong { font-weight: 700; }
.compare-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2px 12px;
}
.compare-row {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 12.5px;
}
.compare-row:last-child { border-bottom: none; }
.cr-label { flex-shrink: 0; width: 76px; font-size: 12px; font-weight: 600; }
.compare-row.verdict .cr-label { color: var(--green); }
.cr-val { color: var(--text-secondary); }

/* ── works-with strip ─────────────────────────────────────────── */
.strip {
  padding: 40px 24px 64px;
  text-align: center;
}
.strip-label { font-size: 12.5px; color: var(--text-tertiary); margin-bottom: 18px; }
.chips { display: flex; justify-content: center; flex-wrap: wrap; gap: 10px; }
.chip {
  font-size: 13px;
  color: var(--text-secondary);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 980px;
  padding: 7px 16px;
  transition: color .2s ease, border-color .2s ease, transform .15s ease;
}
.chip:hover { color: var(--blue); border-color: var(--blue); transform: translateY(-1px); }

/* ── sections ─────────────────────────────────────────────────── */
.section { padding: 96px 24px; max-width: 1080px; margin: 0 auto; }
.section-alt { max-width: none; background: var(--bg-alt); margin: 0; padding: 96px 24px; }
.section-alt > * { max-width: 1080px; margin-left: auto; margin-right: auto; }

.section-head { text-align: center; margin-bottom: 56px; }
.section-head h2, .privacy-band h2, .download-band h2 {
  font-size: clamp(34px, 4.6vw, 52px);
  font-weight: 700;
  letter-spacing: -.035em;
  line-height: 1.05;
  margin-top: 14px;
}

/* ── bento grid ───────────────────────────────────────────────── */
.bento {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.bento-cell {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  padding: 28px;
  transition: box-shadow .25s ease, transform .25s ease;
}
.bento-cell:hover { box-shadow: var(--shadow-elevated); transform: translateY(-3px); }
.cell-big { grid-column: span 2; }
.cell-icon {
  width: 42px; height: 42px;
  border-radius: 12px;
  background: var(--blue-subtle);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  margin-bottom: 18px;
}
.bento-cell h3 { font-size: 19px; font-weight: 650; letter-spacing: -.02em; margin-bottom: 10px; }
.bento-cell p { font-size: 14.5px; color: var(--text-secondary); }
.cell-chips { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 18px; }
.mini-chip {
  font-size: 11.5px;
  color: var(--blue);
  background: var(--blue-subtle);
  border-radius: 7px;
  padding: 4px 9px;
}

/* ── steps ────────────────────────────────────────────────────── */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.step {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  padding: 30px;
}
.step-num {
  font-size: 13px;
  font-weight: 600;
  color: var(--blue);
  letter-spacing: .08em;
  display: block;
  margin-bottom: 16px;
}
.step h3 { font-size: 19px; font-weight: 650; letter-spacing: -.02em; margin-bottom: 10px; }
.step p { font-size: 14.5px; color: var(--text-secondary); }

/* ── privacy band ─────────────────────────────────────────────── */
.privacy-band {
  background: linear-gradient(135deg, #16161c 0%, #1d1d2a 55%, #171b26 100%);
  border-radius: 24px;
  padding: 80px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.privacy-band::before {
  content: '';
  position: absolute;
  width: 520px; height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(94, 92, 230, .28), transparent 65%);
  top: -220px; right: -140px;
  pointer-events: none;
}
.privacy-band::after {
  content: '';
  position: absolute;
  width: 420px; height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 198, 251, .2), transparent 65%);
  bottom: -200px; left: -120px;
  pointer-events: none;
}
.privacy-band > * { position: relative; z-index: 1; }
.eyebrow.light { color: #a1a1a6; background: rgba(255, 255, 255, .08); border-color: rgba(255, 255, 255, .14); }
h2.light { color: #f5f5f7; }
.privacy-sub { color: #a1a1a6; font-size: 17px; max-width: 520px; margin: 20px auto 34px; }
.privacy-path {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: rgba(255, 255, 255, .07);
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: 12px;
  padding: 12px 20px;
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}
.path-label { font-size: 12px; color: #a1a1a6; }
.path { font-size: 14px; color: #7fd4ff; font-family: var(--mono); }

/* ── requirements ─────────────────────────────────────────────── */
.req-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.req-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  padding: 30px;
}
.req-card h3 { font-size: 17px; font-weight: 650; letter-spacing: -.02em; margin-bottom: 16px; }
.req-card ul { list-style: none; }
.req-card li {
  font-size: 14.5px;
  color: var(--text-secondary);
  padding: 8px 0;
  padding-left: 22px;
  position: relative;
  border-bottom: 1px solid var(--border);
}
.req-card li:last-child { border-bottom: none; }
.req-card li::before {
  content: '';
  position: absolute;
  left: 2px; top: 16px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--blue);
  opacity: .7;
}
.note {
  text-align: center;
  font-size: 12px;
  color: var(--text-tertiary);
  margin-top: 34px;
  line-height: 1.8;
}

/* ── faq ──────────────────────────────────────────────────────── */
.faq { max-width: 720px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: box-shadow .2s ease;
}
.faq-item[open] { box-shadow: var(--shadow-elevated); }
.faq-item summary {
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 600;
  letter-spacing: -.01em;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  user-select: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  font-size: 20px;
  font-weight: 400;
  color: var(--text-tertiary);
  transition: transform .25s ease, color .25s ease;
  font-family: var(--mono);
}
.faq-item[open] summary::after { transform: rotate(45deg); color: var(--blue); }
.faq-item p { padding: 0 24px 22px; font-size: 14.5px; color: var(--text-secondary); }

/* ── download band ────────────────────────────────────────────── */
.download-band {
  background: linear-gradient(120deg, var(--blue-subtle), rgba(0, 198, 251, .1) 60%, var(--blue-subtle));
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 80px 48px;
  text-align: center;
}
.download-band h2 { margin-bottom: 16px; }
.download-sub { color: var(--text-secondary); font-size: 17px; max-width: 480px; margin: 0 auto 36px; }
.download-cta { display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap; }
.download-cta .hero-icon { width: 64px; height: 64px; border-radius: 16px; }
.download-meta { margin-top: 22px; font-size: 12.5px; color: var(--text-tertiary); }
.download-meta .dot { margin: 0 8px; opacity: .6; }
.checksum-link { color: var(--text-tertiary); border-bottom: 1px dashed var(--border); }
.checksum-link:hover { color: var(--blue); }
.download-note { margin-top: 14px; font-size: 12px; color: var(--text-tertiary); }

/* ── feedback form ──────────────────────────────────────────── */
.feedback-wrap {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 48px;
  max-width: 860px;
  margin: 0 auto;
  align-items: center;
}
.feedback-pitch h3 { font-size: 22px; font-weight: 650; letter-spacing: -.02em; margin: 16px 0 10px; }
.feedback-pitch p { font-size: 15px; color: var(--text-secondary); line-height: 1.6; }
.pitch-list { list-style: none; margin: 20px 0 0; }
.pitch-list li {
  font-size: 14px;
  color: var(--text-secondary);
  padding: 6px 0 6px 26px;
  position: relative;
}
.pitch-list li::before {
  content: '✓';
  position: absolute;
  left: 2px;
  color: var(--green);
  font-weight: 700;
}
.feedback-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  padding: 32px;
}
.f-field { margin-bottom: 16px; }
.f-field label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--text-primary);
  margin-bottom: 7px;
}
.f-opt { color: var(--text-tertiary); font-weight: 400; }
.feedback-card input[type="text"],
.feedback-card input[type="email"],
.feedback-card textarea {
  width: 100%;
  font-family: var(--sans);
  font-size: 14.5px;
  color: var(--text-primary);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 11px 14px;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.feedback-card textarea { resize: vertical; min-height: 96px; }
.feedback-card input:focus,
.feedback-card textarea:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px var(--blue-subtle);
}
.feedback-card input::placeholder,
.feedback-card textarea::placeholder { color: var(--text-tertiary); }
.honey {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}
.f-actions { display: flex; align-items: center; gap: 16px; margin-top: 4px; flex-wrap: wrap; }
.f-status { font-size: 13.5px; font-weight: 500; }
.f-status.ok { color: var(--green); }
.f-status.err { color: #ff453a; }
.f-note { margin-top: 14px; font-size: 12px; color: var(--text-tertiary); line-height: 1.5; }
@media (max-width: 820px) {
  .feedback-wrap { grid-template-columns: 1fr; gap: 28px; }
}

/* ── footer ────────────────────────────────────────────────── */
footer {
  border-top: 1px solid var(--border);
  background: var(--bg-alt);
  padding: 48px 24px 40px;
  margin-top: 40px;
}
.footer-inner { max-width: 1080px; margin: 0 auto; text-align: center; }
.footer-brand { display: flex; align-items: center; justify-content: center; gap: 8px; font-weight: 600; }
.footer-tag { color: var(--text-secondary); font-size: 13.5px; margin: 10px 0 22px; }
.footer-links { display: flex; justify-content: center; gap: 24px; font-size: 13.5px; }
.footer-copy { margin-top: 26px; color: var(--text-tertiary); font-size: 12px; }

/* ── scroll reveal ────────────────────────────────────────────── */
/* Hidden only when JS is active (progressive enhancement — content
   stays visible to crawlers/readers without JavaScript). */
.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s ease var(--d, 0s), transform .7s ease var(--d, 0s); }
.reveal.in { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .hero-glow span, .dice, .msg-typing span { animation: none; }
  h1 { animation: none; }
}

/* ── responsive ───────────────────────────────────────────────── */
@media (max-width: 900px) {
  .bento { grid-template-columns: 1fr 1fr; }
  .cell-big { grid-column: span 2; }
  .steps { grid-template-columns: 1fr; }
  .req-grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
}
@media (max-width: 620px) {
  .bento { grid-template-columns: 1fr; }
  .cell-big { grid-column: span 1; }
  .hero { padding-top: 120px; }
  .cta-primary { width: 100%; }
  .hero-icon { width: 48px; height: 48px; }
  .download-cta { width: 100%; }
  .download-cta .hero-icon { width: 56px; height: 56px; }
  .download-cta .btn { width: 100%; justify-content: center; }
  .privacy-band, .download-band { padding: 56px 24px; }
  .hero-cta .btn { width: 100%; justify-content: center; }
}