/* ============================================================
   Keyframe Studio — landing
   Midnight-studio palette + neon tri-ring accents from logo
   ============================================================ */

:root {
  --bg: #05080f;
  --panel: #0a0f1a;
  --panel-2: #0d1424;
  --border: rgba(148, 163, 184, 0.14);
  --border-soft: rgba(148, 163, 184, 0.08);
  --fg: #eef3fa;
  --muted: #93a1b6;
  --faint: #5c6b82;
  --red: #ff4d5e;
  --cyan: #38c8ff;
  --white-neon: #e8f0ff;
  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body: "PT Sans", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
  --radius: 16px;
  --nav-h: 68px;
  --maxw: 1180px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 16px);
}

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

::selection { background: rgba(56, 200, 255, 0.35); color: #fff; }

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

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

/* film-grain overlay */
.noise {
  position: fixed;
  inset: 0;
  z-index: 60;
  pointer-events: none;
  opacity: 0.05;
  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)' opacity='0.6'/%3E%3C/svg%3E");
}

/* ============ reveal on scroll ============ */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  transition-delay: var(--d, 0s);
}
.reveal.in { opacity: 1; transform: none; }

/* ============ NAV ============ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 0 clamp(20px, 5vw, 56px);
  background: rgba(5, 8, 15, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-soft);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.brand-mark {
  width: 30px; height: 30px;
  border-radius: 8px;
  filter: drop-shadow(0 0 8px rgba(56, 200, 255, 0.35));
}
.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.01em;
}
.brand-name em {
  font-style: normal;
  font-weight: 400;
  color: var(--muted);
  margin-left: 4px;
}

.nav-links {
  display: flex;
  gap: 28px;
  margin-left: auto;
}
.nav-links a {
  font-size: 14px;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--fg); }

.nav-cta {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 13.5px;
  text-decoration: none;
  padding: 9px 18px;
  border-radius: 999px;
  color: #060a12;
  background: var(--fg);
  transition: transform 0.2s, box-shadow 0.2s;
}
.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 24px rgba(232, 240, 255, 0.25);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 10px;
  background: none;
  border: 0;
  cursor: pointer;
}
.nav-toggle span {
  width: 20px; height: 2px;
  background: var(--fg);
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-menu {
  position: fixed;
  top: var(--nav-h);
  left: 0; right: 0;
  z-index: 49;
  display: none;
  flex-direction: column;
  padding: 8px 24px 20px;
  background: rgba(5, 8, 15, 0.96);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.nav-menu.open { display: flex; }
.nav-menu a {
  padding: 14px 4px;
  font-family: var(--font-display);
  font-size: 17px;
  color: var(--fg);
  text-decoration: none;
  border-bottom: 1px solid var(--border-soft);
}
.nav-menu a:last-child { border-bottom: 0; color: var(--cyan); }

/* ============ HERO ============ */
.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  align-items: center;
  gap: clamp(32px, 5vw, 72px);
  max-width: var(--maxw);
  margin: 0 auto;
  padding: calc(var(--nav-h) + 48px) clamp(20px, 4vw, 40px) 72px;
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  opacity: 0.5;
}
.hero-glow--red {
  width: 420px; height: 420px;
  top: -120px; left: -160px;
  background: radial-gradient(circle, rgba(255, 77, 94, 0.22), transparent 65%);
}
.hero-glow--cyan {
  width: 520px; height: 520px;
  bottom: -180px; right: -140px;
  background: radial-gradient(circle, rgba(56, 200, 255, 0.16), transparent 65%);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
  padding: 7px 14px;
  border: 1px solid rgba(56, 200, 255, 0.28);
  border-radius: 999px;
  background: rgba(56, 200, 255, 0.06);
}
.pulse-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan);
  animation: pulse 2.2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(44px, 6.4vw, 84px);
  line-height: 1.02;
  letter-spacing: -0.03em;
  margin: 26px 0 22px;
}
.neon-split em { font-style: normal; }
.n-red {
  color: var(--red);
  text-shadow: 0 0 22px rgba(255, 77, 94, 0.55);
}
.n-white {
  color: var(--white-neon);
  text-shadow: 0 0 22px rgba(232, 240, 255, 0.4);
}
.n-cyan {
  color: var(--cyan);
  text-shadow: 0 0 22px rgba(56, 200, 255, 0.55);
}

.lede {
  font-size: clamp(16px, 1.4vw, 18.5px);
  color: var(--muted);
  max-width: 34rem;
}

.hero-cta {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 34px;
}
.play-badge img {
  width: 202px;
  height: auto;
  transition: transform 0.25s, filter 0.25s;
}
.play-badge:hover img {
  transform: translateY(-2px);
  filter: drop-shadow(0 6px 20px rgba(255, 255, 255, 0.12));
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 14.5px;
  color: var(--fg);
  text-decoration: none;
  padding: 13px 22px;
  border: 1px solid var(--border);
  border-radius: 999px;
  transition: border-color 0.2s, background 0.2s, transform 0.2s;
}
.btn-ghost:hover {
  border-color: rgba(56, 200, 255, 0.5);
  background: rgba(56, 200, 255, 0.07);
  transform: translateY(-1px);
}

.hero-meta {
  display: flex;
  gap: 8px 22px;
  flex-wrap: wrap;
  margin-top: 28px;
  list-style: none;
  font-size: 13.5px;
  color: var(--faint);
}
.hero-meta li {
  display: flex;
  align-items: center;
  gap: 8px;
}
.hero-meta li::before {
  content: "";
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 7px var(--cyan);
}

/* --- hero stage: animated canvas inside a fake app frame --- */
.hero-stage { position: relative; }

.stage-frame {
  position: relative;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--panel);
  box-shadow:
    0 30px 80px rgba(0, 0, 0, 0.55),
    0 0 60px rgba(56, 200, 255, 0.06),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
  overflow: hidden;
  transform: rotate(1.2deg);
}
.stage-topbar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 11px 14px;
  border-bottom: 1px solid var(--border-soft);
}
.stage-topbar i {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--faint);
  opacity: 0.5;
}
.stage-title {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--faint);
  letter-spacing: 0.06em;
}
#heroCanvas {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  cursor: default;
}
.stage-timeline {
  display: flex;
  gap: 5px;
  padding: 12px 14px;
  border-top: 1px solid var(--border-soft);
}
.stage-timeline i {
  flex: 1;
  height: 26px;
  border-radius: 5px;
  background: var(--panel-2);
  border: 1px solid var(--border-soft);
  transition: background 0.15s, border-color 0.15s, box-shadow 0.15s;
}
.stage-timeline i.on {
  background: rgba(56, 200, 255, 0.16);
  border-color: rgba(56, 200, 255, 0.55);
  box-shadow: 0 0 12px rgba(56, 200, 255, 0.25);
}

/* ============ MARQUEE ============ */
.marquee {
  overflow: hidden;
  padding: 18px 0;
  border-top: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
  background: rgba(10, 15, 26, 0.5);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.marquee-track {
  display: flex;
  align-items: center;
  gap: 26px;
  width: max-content;
  animation: marquee 32s linear infinite;
}
.marquee-track span {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--faint);
  white-space: nowrap;
}
.marquee-track i {
  font-style: normal;
  color: var(--red);
  text-shadow: 0 0 8px rgba(255, 77, 94, 0.7);
}
@keyframes marquee {
  to { transform: translateX(-50%); }
}

/* ============ SECTIONS ============ */
.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(72px, 9vw, 130px) clamp(20px, 4vw, 40px);
}
.section--alt { position: relative; }
.section--alt::before {
  content: "";
  position: absolute;
  inset: 0 -50vw;
  background: rgba(10, 15, 26, 0.45);
  border-top: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
  z-index: -1;
}

.section-head { max-width: 620px; margin-bottom: clamp(40px, 5vw, 64px); }
.section-head .eyebrow { color: var(--red); border-color: rgba(255, 77, 94, 0.3); background: rgba(255, 77, 94, 0.06); }
.section-head .eyebrow::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 10px var(--red);
}

h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(30px, 4vw, 46px);
  letter-spacing: -0.025em;
  line-height: 1.08;
  margin: 20px 0 14px;
}
.section-sub { color: var(--muted); font-size: 16.5px; max-width: 36rem; }

/* --- feature grid --- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.card {
  position: relative;
  padding: 30px 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(160deg, var(--panel) 0%, rgba(10, 15, 26, 0.4) 100%);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s, box-shadow 0.3s;
}
.card:hover {
  transform: translateY(-5px);
  border-color: rgba(148, 163, 184, 0.3);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.4);
}
.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px; height: 46px;
  border-radius: 12px;
  margin-bottom: 20px;
  border: 1px solid var(--border);
  background: var(--panel-2);
}
.card-icon svg { width: 22px; height: 22px; }
.card-icon.n-cyan { color: var(--cyan); box-shadow: inset 0 0 18px rgba(56, 200, 255, 0.08); }
.card-icon.n-red { color: var(--red); box-shadow: inset 0 0 18px rgba(255, 77, 94, 0.08); }
.card-icon.n-white { color: var(--white-neon); box-shadow: inset 0 0 18px rgba(232, 240, 255, 0.08); }
.card h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 19px;
  letter-spacing: -0.01em;
  margin-bottom: 9px;
}
.card p { font-size: 14.5px; color: var(--muted); line-height: 1.65; }

/* --- workflow steps --- */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  list-style: none;
  counter-reset: step;
}
.step {
  position: relative;
  padding: 34px 30px 30px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  overflow: hidden;
}
.step::after {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 2px;
  background: linear-gradient(90deg, var(--red), var(--white-neon), var(--cyan));
  opacity: 0.7;
}
.step-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cyan);
  letter-spacing: 0.16em;
  margin-bottom: 18px;
  text-shadow: 0 0 12px rgba(56, 200, 255, 0.5);
}
.step h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 24px;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}
.step p { font-size: 14.5px; color: var(--muted); line-height: 1.65; }

/* --- audience cards --- */
.audience-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.audience {
  padding: 26px 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--panel), transparent);
  transition: transform 0.3s, border-color 0.3s;
}
.audience:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 77, 94, 0.35);
}
.audience h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 17px;
  margin-bottom: 8px;
}
.audience p { font-size: 14px; color: var(--muted); line-height: 1.6; }

/* ============ DOWNLOAD ============ */
.download {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, auto);
  align-items: center;
  gap: clamp(48px, 7vw, 110px);
}
.download .play-badge img { width: 216px; }
.check-list {
  list-style: none;
  margin-top: 26px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.check-list li {
  position: relative;
  padding-left: 28px;
  font-size: 14.5px;
  color: var(--muted);
}
.check-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 3px;
  width: 16px; height: 16px;
  border-radius: 50%;
  border: 1px solid rgba(56, 200, 255, 0.5);
  background:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2338c8ff' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center / 9px no-repeat;
}

/* phone mockup */
.phone-wrap { perspective: 1200px; }
.phone {
  position: relative;
  width: 262px;
  aspect-ratio: 262 / 536;
  border-radius: 38px;
  border: 1px solid rgba(148, 163, 184, 0.25);
  background: #04060b;
  padding: 12px;
  box-shadow:
    0 40px 90px rgba(0, 0, 0, 0.6),
    0 0 70px rgba(56, 200, 255, 0.1),
    inset 0 0 0 2px rgba(255, 255, 255, 0.04);
  transform: rotateY(-8deg) rotateX(2deg);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: transform;
}
.phone-notch {
  position: absolute;
  top: 22px; left: 50%;
  transform: translateX(-50%);
  width: 74px; height: 20px;
  border-radius: 999px;
  background: #04060b;
  border: 1px solid var(--border-soft);
  z-index: 2;
}
.phone-screen {
  height: 100%;
  border-radius: 28px;
  overflow: hidden;
  background: linear-gradient(170deg, #0a1020 0%, #05080f 70%);
  border: 1px solid var(--border-soft);
  display: flex;
  flex-direction: column;
}
.phone-toolbar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 34px 14px 12px;
}
.phone-toolbar img { border-radius: 5px; }
.phone-toolbar i {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--faint);
  opacity: 0.5;
  margin-left: auto;
}
.phone-toolbar i + i { margin-left: 0; }
.phone-canvas {
  flex: 1;
  margin: 0 12px;
  border-radius: 12px;
  border: 1px solid var(--border-soft);
  background: #070c16;
  display: flex;
  align-items: center;
  justify-content: center;
}
.squiggle {
  fill: none;
  stroke-linecap: round;
  stroke-width: 4;
}
.squiggle.s1 { stroke: var(--red); opacity: 0.35; filter: drop-shadow(0 0 6px rgba(255, 77, 94, 0.5)); }
.squiggle.s2 { stroke: var(--white-neon); stroke-width: 4.5; filter: drop-shadow(0 0 6px rgba(232, 240, 255, 0.5)); }
.squiggle.s3 { stroke: var(--cyan); opacity: 0.35; filter: drop-shadow(0 0 6px rgba(56, 200, 255, 0.5)); }
.phone-timeline {
  display: flex;
  gap: 5px;
  padding: 12px;
}
.phone-timeline i {
  flex: 1;
  height: 30px;
  border-radius: 6px;
  background: var(--panel-2);
  border: 1px solid var(--border-soft);
}
.phone-timeline i.on {
  background: rgba(56, 200, 255, 0.18);
  border-color: rgba(56, 200, 255, 0.6);
  box-shadow: 0 0 12px rgba(56, 200, 255, 0.3);
}

/* ============ FOOTER ============ */
.footer {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 56px clamp(20px, 4vw, 40px) 48px;
  border-top: 1px solid var(--border-soft);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
}
.footer-tag { color: var(--muted); font-size: 15px; }
.footer-links {
  display: flex;
  gap: 24px;
  margin-top: 4px;
}
.footer-links a {
  font-size: 14px;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--cyan); }
.footer-copy {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--faint);
  letter-spacing: 0.04em;
}

/* ============ DEEP DIVE ============ */
.principles {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
  margin-top: 22px;
}
.principles li {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--fg);
  padding: 7px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--panel);
}

.deep-list {
  display: flex;
  flex-direction: column;
  gap: clamp(56px, 8vw, 96px);
  margin-top: clamp(48px, 6vw, 80px);
}
.deep {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: center;
  gap: clamp(32px, 5vw, 72px);
}
.deep--flip .deep-copy { order: 2; }
.deep--flip .deep-visual { order: 1; }

.deep-num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
  text-shadow: 0 0 12px rgba(56, 200, 255, 0.45);
  margin-bottom: 14px;
}
.deep h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(24px, 2.8vw, 34px);
  letter-spacing: -0.02em;
  line-height: 1.12;
  margin-bottom: 16px;
}
.deep p {
  font-size: 15.5px;
  color: var(--muted);
  line-height: 1.75;
}
.deep p + p { margin-top: 14px; }
.deep strong { color: var(--fg); font-weight: 700; }
.deep em { color: var(--fg); }

.deep-visual { position: relative; }
.viz-panel {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(160deg, var(--panel) 0%, rgba(10, 15, 26, 0.4) 100%);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.04);
  padding: 26px 24px;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.4s;
}
.deep:hover .viz-panel {
  transform: translateY(-4px);
  border-color: rgba(148, 163, 184, 0.28);
}
.viz-svg { display: block; width: 100%; height: auto; }
.viz-cap {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--faint);
  text-transform: uppercase;
}

/* real-app screenshots inside the viz frame */
.viz-panel--shot {
  padding: 0;
  overflow: hidden;
}
.viz-panel--shot img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}
.viz-panel--shot .viz-cap {
  margin: 0;
  padding: 13px 16px;
  border-top: 1px solid var(--border-soft);
}
.viz-shot--bottom img { object-position: 50% 100%; }
.viz-shot--right img { object-position: 100% 50%; }

/* ============ SPEC SHEET ============ */
.spec-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.spec-group {
  padding: 26px 26px 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(170deg, var(--panel) 0%, rgba(10, 15, 26, 0.35) 100%);
  transition: border-color 0.3s, transform 0.3s;
}
.spec-group:hover {
  border-color: rgba(56, 200, 255, 0.3);
  transform: translateY(-3px);
}
.spec-group h4 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--white-neon);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-soft);
}
.spec-group .check-list { margin-top: 0; }
.spec-group .check-list li { font-size: 13.5px; padding-left: 24px; }

/* ============ RESPONSIVE ============ */
@media (max-width: 980px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: calc(var(--nav-h) + 40px);
    min-height: 0;
  }
  .hero-stage { max-width: 640px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .audience-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: 1fr; max-width: 560px; }
  .download { grid-template-columns: 1fr; justify-items: center; text-align: left; }
  .download-copy { max-width: 560px; }
  .deep { grid-template-columns: 1fr; gap: 28px; }
  .deep--flip .deep-copy { order: 0; }
  .deep--flip .deep-visual { order: 0; }
  .deep-visual { max-width: 560px; }
  .spec-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 760px) {
  .nav-links, .nav-cta { display: none; }
  .nav-toggle { display: flex; margin-left: auto; }
  .feature-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: clamp(38px, 11vw, 52px); }
  .stage-frame { transform: none; }
  .phone { transform: none; }
  .spec-grid { grid-template-columns: 1fr; }
}

/* ============ REDUCED MOTION ============ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .marquee-track { animation: none; }
  .pulse-dot { animation: none; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}