/* ==========================================================================
   NeuraSense AI — Design System
   Privacy-first radar health monitoring for dementia care.
   ========================================================================== */

/* ---- Tokens ---- */
:root {
  /* Brand */
  --ink:        #0B1424;   /* near-black navy */
  --ink-2:      #0E1B30;
  --navy:       #102844;
  --brand:      #19D3D9;   /* signal teal/cyan */
  --brand-2:    #2EA8FF;   /* electric blue */
  --brand-3:    #5B6CFF;   /* indigo (AI) */
  --warm:       #FF8A6B;   /* care coral */
  --warm-soft:  #FFB59E;

  /* Neutrals */
  --bg:         #FFFFFF;
  --bg-soft:    #F4F8FB;
  --bg-soft-2:  #EDF3F8;
  --line:       #E2EAF1;
  --line-strong:#CFDBE6;
  --text:       #0F1B2D;
  --muted:      #54657B;
  --muted-2:    #7C8CA0;
  --white:      #FFFFFF;

  /* Gradients */
  --grad: linear-gradient(120deg, var(--brand) 0%, var(--brand-2) 52%, var(--brand-3) 100%);
  --grad-soft: linear-gradient(120deg, rgba(25,211,217,.14), rgba(91,108,255,.14));

  /* Type */
  --font-display: "Sora", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  /* Radius / shadow */
  --r-sm: 10px;
  --r:    16px;
  --r-lg: 24px;
  --r-xl: 32px;
  --shadow-sm: 0 1px 2px rgba(16,40,68,.06), 0 2px 6px rgba(16,40,68,.05);
  --shadow:    0 10px 30px -12px rgba(16,40,68,.22);
  --shadow-lg: 0 30px 70px -28px rgba(16,40,68,.40);
  --shadow-brand: 0 24px 60px -22px rgba(46,168,255,.55);

  /* Layout */
  --maxw: 1180px;
  --gutter: clamp(20px, 5vw, 48px);
  --nav-h: 72px;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}
body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
ul { list-style: none; padding: 0; }
:focus-visible { outline: 3px solid var(--brand-2); outline-offset: 3px; border-radius: 6px; }

/* ---- Typography ---- */
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 700; line-height: 1.08; letter-spacing: -0.02em; color: var(--text); }
h1 { font-size: clamp(2.4rem, 1.4rem + 4.4vw, 4.4rem); }
h2 { font-size: clamp(1.9rem, 1.2rem + 2.6vw, 3rem); }
h3 { font-size: clamp(1.2rem, 1rem + 0.7vw, 1.5rem); }
p  { color: var(--muted); }
.lead { font-size: clamp(1.05rem, 1rem + 0.45vw, 1.3rem); color: var(--muted); }

/* ---- Layout helpers ---- */
.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: clamp(64px, 8vw, 120px); position: relative; }
.section--soft { background: var(--bg-soft); }
.section--ink { background: var(--ink); color: #E7EEF6; }
.section--ink h2, .section--ink h3 { color: #fff; }
.section--ink p { color: #9FB2C8; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-display); font-weight: 600; font-size: .8rem;
  letter-spacing: .12em; text-transform: uppercase; color: var(--brand-2);
}
.eyebrow::before { content:""; width: 22px; height: 2px; border-radius: 2px; background: var(--grad); }
.section--ink .eyebrow { color: var(--brand); }
.section-head { max-width: 720px; }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head .lead { margin-top: 18px; }
.gradient-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  font-family: var(--font-display); font-weight: 600; font-size: .98rem;
  padding: 14px 24px; border-radius: 999px; transition: transform .18s ease, box-shadow .25s ease, background .2s ease, color .2s ease;
  white-space: nowrap; cursor: pointer;
}
.btn svg { width: 18px; height: 18px; }
.btn--primary { background: var(--grad); color: #04121f; box-shadow: var(--shadow-brand); }
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 30px 70px -20px rgba(46,168,255,.7); }
.btn--ghost { background: rgba(255,255,255,.06); color: #fff; border: 1px solid rgba(255,255,255,.22); }
.btn--ghost:hover { background: rgba(255,255,255,.12); transform: translateY(-2px); }
.btn--dark { background: var(--ink); color: #fff; }
.btn--dark:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.btn--light { background: #fff; color: var(--ink); border: 1px solid var(--line); }
.btn--light:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.btn--lg { padding: 17px 32px; font-size: 1.05rem; }
.btn--block { width: 100%; }

/* ==========================================================================
   Navigation
   ========================================================================== */
.nav {
  position: sticky; top: 0; z-index: 100;
  height: var(--nav-h);
  display: flex; align-items: center;
  background: rgba(255,255,255,.72);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s ease, background .25s ease, box-shadow .25s ease;
}
.nav.scrolled { border-bottom-color: var(--line); box-shadow: 0 6px 24px -18px rgba(16,40,68,.4); }
.nav .container { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 11px; font-family: var(--font-display); font-weight: 700; font-size: 1.18rem; letter-spacing: -.02em; color: var(--ink); white-space: nowrap; }
.brand img { width: 34px; height: 34px; }
.brand b { font-weight: 800; }
.brand span { color: var(--brand-2); }
.nav-links { display: flex; align-items: center; gap: 28px; }
.mobile-only-cta { display: none; }
.nav-links a { font-size: .95rem; font-weight: 500; color: var(--muted); transition: color .15s ease; }
.nav-links a:hover { color: var(--text); }
.nav-actions { display: flex; align-items: center; gap: 14px; }
.nav-cta { padding: 11px 20px; font-size: .92rem; }
.nav-toggle { display: none; width: 44px; height: 44px; border-radius: 12px; align-items: center; justify-content: center; }
.nav-toggle span { position: relative; width: 20px; height: 2px; background: var(--ink); border-radius: 2px; transition: .2s; }
.nav-toggle span::before, .nav-toggle span::after { content:""; position: absolute; left: 0; width: 20px; height: 2px; background: var(--ink); border-radius: 2px; transition: .2s; }
.nav-toggle span::before { top: -6px; } .nav-toggle span::after { top: 6px; }
.nav.open .nav-toggle span { background: transparent; }
.nav.open .nav-toggle span::before { top: 0; transform: rotate(45deg); }
.nav.open .nav-toggle span::after { top: 0; transform: rotate(-45deg); }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero { position: relative; background: var(--ink); color: #EAF1F9; overflow: hidden; padding-block: clamp(56px, 8vw, 104px) clamp(72px, 9vw, 128px); }
.hero::before {
  content:""; position: absolute; inset: 0;
  background:
    radial-gradient(1100px 540px at 78% -8%, rgba(46,168,255,.20), transparent 60%),
    radial-gradient(760px 460px at 10% 110%, rgba(91,108,255,.18), transparent 60%),
    radial-gradient(620px 420px at 96% 92%, rgba(25,211,217,.10), transparent 60%);
  pointer-events: none;
}
.hero .container { position: relative; z-index: 1; display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(32px, 5vw, 64px); align-items: center; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 10px; padding: 7px 14px 7px 8px;
  border-radius: 999px; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.14);
  font-size: .82rem; font-weight: 500; color: #C7D6E8; margin-bottom: 26px;
}
.hero-eyebrow b { display: inline-flex; align-items: center; gap: 6px; padding: 3px 10px; border-radius: 999px; background: var(--grad); color: #04121f; font-family: var(--font-display); font-weight: 700; font-size: .72rem; letter-spacing: .04em; }
.hero h1 { color: #fff; }
.hero h1 .gradient-text { display: inline-block; }
.hero-sub { margin-top: 24px; max-width: 560px; font-size: clamp(1.05rem, 1rem + .4vw, 1.22rem); color: #A9BCD2; }
.hero-actions { margin-top: 36px; display: flex; flex-wrap: wrap; gap: 14px; }
.hero-trust { margin-top: 30px; display: flex; align-items: center; gap: 16px; flex-wrap: wrap; color: #8FA3BC; font-size: .9rem; }
.hero-trust .dot { width: 5px; height: 5px; border-radius: 50%; background: var(--brand); box-shadow: 0 0 0 4px rgba(25,211,217,.18); }
.hero-trust .pillset { display: inline-flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.hero-trust .pill { display: inline-flex; align-items: center; gap: 7px; }
.hero-trust .pill svg { width: 16px; height: 16px; color: var(--brand); }

/* Hero visual (radar scene) */
.hero-visual { position: relative; aspect-ratio: 1 / 1; }
.radar-scene { position: absolute; inset: 0; }
.radar-rings circle { fill: none; stroke: rgba(255,255,255,.12); }
.radar-pulse { transform-origin: center; transform-box: fill-box; }
.pulse-1 { animation: pulse 4s ease-out infinite; }
.pulse-2 { animation: pulse 4s ease-out infinite 1.33s; }
.pulse-3 { animation: pulse 4s ease-out infinite 2.66s; }
@keyframes pulse { 0% { opacity: .55; transform: scale(.28); } 70% { opacity: .12; } 100% { opacity: 0; transform: scale(1); } }
.scan { transform-origin: 50% 50%; animation: spin 7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.pcloud .pt { animation: twinkle 3s ease-in-out infinite; }
@keyframes twinkle { 0%,100% { opacity: .25; } 50% { opacity: 1; } }
.float-card {
  position: absolute; display: flex; align-items: center; gap: 11px;
  padding: 12px 15px; border-radius: 14px;
  background: rgba(13,26,46,.72); border: 1px solid rgba(255,255,255,.12);
  backdrop-filter: blur(8px); box-shadow: var(--shadow-lg); color: #EAF1F9;
  font-size: .85rem; animation: floaty 6s ease-in-out infinite;
}
.float-card .ic { width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; flex: 0 0 auto; }
.float-card .ic svg { width: 18px; height: 18px; }
.float-card b { font-family: var(--font-display); font-size: .92rem; color: #fff; display: block; }
.float-card small { color: #8FA3BC; }
.fc-1 { top: 6%; right: -2%; animation-delay: 0s; }
.fc-1 .ic { background: rgba(255,138,107,.18); color: var(--warm); }
.fc-2 { bottom: 12%; left: -6%; animation-delay: 1.5s; }
.fc-2 .ic { background: rgba(25,211,217,.16); color: var(--brand); }
.fc-3 { bottom: -2%; right: 8%; animation-delay: 3s; }
.fc-3 .ic { background: rgba(91,108,255,.18); color: var(--brand-3); }
@keyframes floaty { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }

/* Marquee / logos strip */
.stat-strip { background: var(--ink-2); color: #fff; border-top: 1px solid rgba(255,255,255,.06); }
.stat-strip .grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(16px, 3vw, 40px); padding-block: clamp(40px, 5vw, 64px); }
.stat { text-align: center; }
.stat .num { font-family: var(--font-display); font-weight: 800; font-size: clamp(2rem, 1.4rem + 2.4vw, 3.1rem); line-height: 1; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat .lbl { margin-top: 10px; color: #93A6BE; font-size: .92rem; }
.stat + .stat { border-left: 1px solid rgba(255,255,255,.07); }

/* ==========================================================================
   Generic content blocks
   ========================================================================== */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(36px, 5vw, 72px); align-items: center; }
.split.rev .split-media { order: -1; }

.card {
  background: var(--bg); border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 28px; box-shadow: var(--shadow-sm); transition: transform .22s ease, box-shadow .25s ease, border-color .25s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--line-strong); }
.icon-badge { width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center; background: var(--grad-soft); color: var(--brand-2); margin-bottom: 18px; }
.icon-badge svg { width: 26px; height: 26px; }
.card h3 { margin-bottom: 9px; }
.card p { font-size: .98rem; }

/* Problem cards */
.problem-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 52px; }
.problem-card { background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); padding: 30px 28px; }
.problem-card .tag { display: inline-flex; align-items: center; gap: 8px; font-family: var(--font-display); font-weight: 600; font-size: .82rem; color: var(--warm); margin-bottom: 14px; }
.problem-card .tag .x { width: 22px; height: 22px; border-radius: 7px; background: rgba(255,138,107,.14); display: grid; place-items: center; }
.problem-card .tag .x svg { width: 13px; height: 13px; }
.problem-card h3 { font-size: 1.18rem; margin-bottom: 8px; }
.problem-card p { font-size: .96rem; }

/* ==========================================================================
   Comparison table
   ========================================================================== */
.compare { margin-top: 56px; border-radius: var(--r-xl); overflow: hidden; border: 1px solid var(--line); box-shadow: var(--shadow); background: #fff; }
.compare-table { width: 100%; border-collapse: collapse; }
.compare-table th, .compare-table td { padding: 18px clamp(14px, 2vw, 26px); text-align: center; border-bottom: 1px solid var(--line); }
.compare-table thead th { font-family: var(--font-display); font-weight: 700; font-size: 1rem; vertical-align: middle; }
.compare-table thead th:first-child { text-align: left; }
.compare-table tbody th { text-align: left; font-family: var(--font-body); font-weight: 600; color: var(--text); font-size: .97rem; }
.compare-table .col-ns { background: linear-gradient(180deg, rgba(46,168,255,.07), rgba(91,108,255,.05)); position: relative; }
.compare-table thead .col-ns { color: var(--ink); }
.col-ns-head { display: inline-flex; flex-direction: column; align-items: center; gap: 6px; }
.col-ns-head .pill { font-size: .68rem; letter-spacing: .08em; text-transform: uppercase; padding: 3px 10px; border-radius: 999px; background: var(--grad); color: #04121f; font-weight: 700; }
.compare-table tbody tr:last-child td, .compare-table tbody tr:last-child th { border-bottom: 0; }
.mark { display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; }
.mark.yes { background: rgba(25,211,217,.16); color: #08a7ad; }
.mark.no  { background: #F1F5F9; color: #B6C2D0; }
.mark.partial { background: rgba(255,138,107,.16); color: #e06a48; font-family: var(--font-display); font-size: .72rem; font-weight: 700; }
.mark svg { width: 15px; height: 15px; }
.col-other-head { color: var(--muted); font-weight: 600; }

/* ==========================================================================
   How it works — steps
   ========================================================================== */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; margin-top: 56px; counter-reset: step; }
.step { position: relative; padding-top: 18px; }
.step .num { font-family: var(--font-display); font-weight: 800; font-size: 1rem; color: #04121f; width: 40px; height: 40px; border-radius: 12px; background: var(--grad); display: grid; place-items: center; margin-bottom: 18px; box-shadow: var(--shadow-brand); }
.step .ic { width: 30px; height: 30px; color: var(--brand-2); margin-bottom: 12px; }
.step .ic svg { width: 30px; height: 30px; }
.step h3 { font-size: 1.12rem; margin-bottom: 8px; }
.step p { font-size: .95rem; }
.step::after { content:""; position: absolute; top: 38px; left: calc(40px + 14px); right: -22px; height: 2px; background: linear-gradient(90deg, var(--line-strong), transparent); }
.steps .step:last-child::after { display: none; }

/* ==========================================================================
   Features grid
   ========================================================================== */
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 56px; }
.feature { background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); padding: 26px 24px; transition: transform .2s ease, box-shadow .25s ease, border-color .2s; }
.feature:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: var(--line-strong); }
.feature .ic { width: 46px; height: 46px; border-radius: 13px; display: grid; place-items: center; background: var(--grad-soft); color: var(--brand-2); margin-bottom: 16px; }
.feature .ic svg { width: 24px; height: 24px; }
.feature h3 { font-size: 1.08rem; margin-bottom: 7px; }
.feature p { font-size: .92rem; }
.feature.span-2 { grid-column: span 2; }

/* ==========================================================================
   Science (ink section)
   ========================================================================== */
.sci-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(36px, 5vw, 72px); align-items: center; }
.sci-list { margin-top: 32px; display: grid; gap: 20px; }
.sci-item { display: flex; gap: 16px; }
.sci-item .ic { flex: 0 0 auto; width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.12); color: var(--brand); }
.sci-item .ic svg { width: 22px; height: 22px; }
.sci-item h3 { font-size: 1.05rem; color: #fff; margin-bottom: 4px; }
.sci-item p { font-size: .94rem; color: #9FB2C8; }
.metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 36px; }
.metric { background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.1); border-radius: var(--r); padding: 22px 18px; text-align: center; }
.metric .num { font-family: var(--font-display); font-weight: 800; font-size: 1.9rem; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.metric .lbl { color: #9FB2C8; font-size: .82rem; margin-top: 6px; }

/* radar viz card */
.viz-card { background: linear-gradient(160deg, #0E1B30, #0B1424); border: 1px solid rgba(255,255,255,.1); border-radius: var(--r-xl); padding: 26px; box-shadow: var(--shadow-lg); }
.viz-card .viz-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.viz-card .viz-head b { font-family: var(--font-display); color: #fff; font-size: .95rem; }
.viz-card .viz-head .live { display: inline-flex; align-items: center; gap: 7px; font-size: .76rem; color: #8FA3BC; }
.viz-card .viz-head .live .d { width: 7px; height: 7px; border-radius: 50%; background: var(--brand); box-shadow: 0 0 0 0 rgba(25,211,217,.6); animation: live 2s ease-out infinite; }
@keyframes live { 0% { box-shadow: 0 0 0 0 rgba(25,211,217,.5); } 100% { box-shadow: 0 0 0 9px rgba(25,211,217,0); } }

/* ==========================================================================
   Audience
   ========================================================================== */
.audience-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 52px; }
.aud-card { position: relative; overflow: hidden; border-radius: var(--r-xl); padding: 34px 30px; color: #fff; min-height: 290px; display: flex; flex-direction: column; justify-content: flex-end; box-shadow: var(--shadow); }
.aud-card .ic { position: absolute; top: 28px; left: 30px; width: 50px; height: 50px; border-radius: 14px; background: rgba(255,255,255,.16); backdrop-filter: blur(4px); display: grid; place-items: center; }
.aud-card .ic svg { width: 26px; height: 26px; }
.aud-card h3 { color: #fff; font-size: 1.35rem; margin-bottom: 10px; }
.aud-card p { color: rgba(255,255,255,.85); font-size: .95rem; }
.aud-1 { background: linear-gradient(150deg, #134e6f, #0b6e74); }
.aud-2 { background: linear-gradient(150deg, #243b7a, #3a5bd0); }
.aud-3 { background: linear-gradient(150deg, #6a2f57, #b15a3e); }
.aud-card::after { content:""; position: absolute; inset: 0; background: radial-gradient(420px 200px at 90% 10%, rgba(255,255,255,.18), transparent 60%); pointer-events: none; }

/* ==========================================================================
   CTA + form
   ========================================================================== */
.cta { position: relative; overflow: hidden; }
.cta-wrap { position: relative; background: var(--ink); border-radius: var(--r-xl); overflow: hidden; box-shadow: var(--shadow-lg); }
.cta-wrap::before { content:""; position: absolute; inset: 0; background: radial-gradient(700px 360px at 85% -10%, rgba(46,168,255,.25), transparent 60%), radial-gradient(520px 360px at 0% 120%, rgba(91,108,255,.22), transparent 60%); pointer-events: none; }
.cta-grid { position: relative; display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 5vw, 64px); padding: clamp(36px, 5vw, 60px); align-items: center; }
.cta-copy h2 { color: #fff; }
.cta-copy .lead { color: #A9BCD2; margin-top: 16px; }
.cta-points { margin-top: 26px; display: grid; gap: 12px; }
.cta-points li { display: flex; align-items: center; gap: 11px; color: #C7D6E8; font-size: .96rem; }
.cta-points .ck { width: 22px; height: 22px; border-radius: 50%; background: rgba(25,211,217,.16); color: var(--brand); display: grid; place-items: center; flex: 0 0 auto; }
.cta-points .ck svg { width: 13px; height: 13px; }

.form-card { background: #fff; border-radius: var(--r-lg); padding: clamp(24px, 3vw, 34px); box-shadow: var(--shadow-lg); }
.form-card h3 { font-size: 1.3rem; margin-bottom: 6px; }
.form-card .sub { color: var(--muted); font-size: .92rem; margin-bottom: 22px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: .85rem; font-weight: 600; color: var(--text); margin-bottom: 7px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 13px 15px; border: 1px solid var(--line-strong); border-radius: 12px;
  font: inherit; font-size: .96rem; color: var(--text); background: #fff; transition: border-color .15s, box-shadow .15s;
}
.field textarea { resize: vertical; min-height: 96px; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--brand-2); box-shadow: 0 0 0 4px rgba(46,168,255,.14); }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-note { font-size: .8rem; color: var(--muted-2); margin-top: 14px; text-align: center; }
.form-note a { color: var(--brand-2); }
.form-status { margin-top: 14px; padding: 14px 16px; border-radius: 12px; font-size: .92rem; display: none; }
.form-status.show { display: block; }
.form-status.ok { background: rgba(25,211,217,.12); color: #0a7a7f; border: 1px solid rgba(25,211,217,.3); }
.form-status.err { background: #FFF1ED; color: #c0492c; border: 1px solid #ffd6c9; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* ==========================================================================
   FAQ
   ========================================================================== */
.faq { max-width: 820px; margin: 52px auto 0; }
.faq details { border-bottom: 1px solid var(--line); padding: 6px 0; }
.faq summary { list-style: none; cursor: pointer; padding: 18px 44px 18px 4px; position: relative; font-family: var(--font-display); font-weight: 600; font-size: 1.06rem; color: var(--text); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content:"+"; position: absolute; right: 8px; top: 50%; transform: translateY(-50%); font-size: 1.5rem; color: var(--brand-2); transition: transform .2s; font-weight: 400; }
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq details p { padding: 0 44px 20px 4px; font-size: .98rem; }

/* ==========================================================================
   Footer
   ========================================================================== */
.footer { background: var(--ink); color: #9FB2C8; padding-block: clamp(56px, 6vw, 84px) 32px; }
.footer-top { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: clamp(28px, 4vw, 56px); padding-bottom: 48px; border-bottom: 1px solid rgba(255,255,255,.08); }
.footer .brand { color: #fff; margin-bottom: 16px; }
.footer .brand span { color: var(--brand); }
.footer-blurb { font-size: .94rem; max-width: 320px; color: #8FA3BC; }
.footer-blurb .badge { display: inline-flex; align-items: center; gap: 8px; margin-top: 18px; padding: 7px 13px; border-radius: 999px; background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.12); font-size: .8rem; color: #C7D6E8; }
.footer-col h4 { font-family: var(--font-display); font-size: .82rem; letter-spacing: .1em; text-transform: uppercase; color: #6F84A0; margin-bottom: 16px; font-weight: 700; }
.footer-col a { display: block; font-size: .94rem; color: #A9BCD2; padding: 6px 0; transition: color .15s; }
.footer-col a:hover { color: #fff; }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; gap: 18px; flex-wrap: wrap; padding-top: 26px; font-size: .85rem; color: #6F84A0; }
.footer-social { display: flex; gap: 10px; }
.footer-social a { width: 38px; height: 38px; border-radius: 10px; background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.1); display: grid; place-items: center; color: #A9BCD2; transition: .18s; }
.footer-social a:hover { background: var(--grad); color: #04121f; border-color: transparent; transform: translateY(-2px); }
.footer-social svg { width: 17px; height: 17px; }
.disclaimer { margin-top: 22px; font-size: .78rem; color: #5C7290; line-height: 1.5; max-width: 760px; }

/* ==========================================================================
   Reveal animations
   ========================================================================== */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-d="1"] { transition-delay: .08s; }
.reveal[data-d="2"] { transition-delay: .16s; }
.reveal[data-d="3"] { transition-delay: .24s; }
.reveal[data-d="4"] { transition-delay: .32s; }

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1080px) {
  .feature-grid, .steps { grid-template-columns: repeat(2, 1fr); }
  .steps .step::after { display: none; }
}
@media (max-width: 920px) {
  .hero .container { grid-template-columns: 1fr; }
  .hero-visual { max-width: 460px; margin-inline: auto; order: -1; width: 100%; }
  .split, .sci-grid, .cta-grid { grid-template-columns: 1fr; }
  .split.rev .split-media { order: 0; }
  .problem-grid, .audience-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .stat-strip .grid { grid-template-columns: repeat(2, 1fr); row-gap: 30px; }
  .stat:nth-child(3) { border-left: 0; }
  .stat + .stat { border-left: 1px solid rgba(255,255,255,.07); }
  .stat:nth-child(odd) { border-left: 0; }
}
@media (max-width: 900px) {
  .nav-links, .nav-actions .nav-cta { display: none; }
  .nav-toggle { display: flex; }
  .nav.open .nav-links {
    display: flex; flex-direction: column; align-items: flex-start; gap: 4px;
    position: absolute; top: var(--nav-h); left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--line); padding: 16px var(--gutter) 24px;
    box-shadow: var(--shadow);
  }
  .nav.open .nav-links a { padding: 12px 0; font-size: 1.05rem; width: 100%; border-bottom: 1px solid var(--line); }
  .nav.open .nav-links .mobile-only-cta { display: inline-flex; margin-top: 14px; width: 100%; border-bottom: 0; color: #04121f; }
}
@media (max-width: 720px) {
  .feature-grid { grid-template-columns: 1fr; }
  .feature.span-2 { grid-column: span 1; }
  .field-row { grid-template-columns: 1fr; }
  .compare-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .compare { min-width: 560px; }
  .metrics { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .footer-top { grid-template-columns: 1fr; }
  body { font-size: 16px; }
}