/* ===================================================================
   LogicStack · Explainable AI Decision Engine  —  Stylesheet
   =================================================================== */

:root {
  --indigo-300: #a5b4fc;
  --indigo-400: #818cf8;
  --indigo-500: #6366f1;
  --indigo-600: #4f46e5;
  --cyan-400: #22d3ee;
  --violet-500: #8b5cf6;

  --ink-900: #0b1020;
  --ink-800: #121933;
  --ink-700: #1b2444;

  --slate-900: #0f172a;
  --slate-700: #334155;
  --slate-600: #475569;
  --slate-500: #64748b;
  --slate-400: #94a3b8;
  --slate-300: #cbd5e1;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --slate-50: #f8fafc;
  --white: #ffffff;

  --grad: linear-gradient(120deg, #818cf8 0%, #6366f1 45%, #22d3ee 100%);
  --grad-soft: linear-gradient(120deg, #6366f1, #22d3ee);

  --shadow-sm: 0 1px 2px rgba(15, 23, 42, .06), 0 1px 3px rgba(15, 23, 42, .08);
  --shadow-md: 0 8px 24px -8px rgba(15, 23, 42, .18);
  --shadow-lg: 0 24px 60px -18px rgba(79, 70, 229, .35);
  --shadow-glow: 0 0 0 1px rgba(99, 102, 241, .25), 0 20px 50px -16px rgba(99, 102, 241, .45);

  --radius: 16px;
  --radius-lg: 22px;
  --container: 1180px;

  --font-sans: "Inter", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", ui-monospace, Menlo, monospace;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  color: var(--slate-700);
  background: var(--white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input { font-family: inherit; }

.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: 24px; }

.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  white-space: nowrap;
}

/* ---------- Buttons ---------- */
.btn {
  --pad: 11px 20px;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: var(--pad);
  border-radius: 12px;
  font-weight: 600; font-size: 15px;
  transition: transform .18s ease, box-shadow .25s ease, background .25s ease, color .2s ease, border-color .2s;
  white-space: nowrap;
}
.btn--lg { --pad: 15px 28px; font-size: 16px; border-radius: 14px; }
.btn--block { width: 100%; }
.btn--primary {
  background: var(--grad); color: #fff;
  box-shadow: 0 10px 24px -10px rgba(79, 70, 229, .6);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 16px 34px -10px rgba(79, 70, 229, .7); }
.btn--ghost {
  background: rgba(99, 102, 241, .06);
  color: var(--indigo-600);
  border: 1px solid rgba(99, 102, 241, .22);
}
.btn--ghost:hover { background: rgba(99, 102, 241, .12); transform: translateY(-2px); }
.btn .arrow { transition: transform .2s ease; }
.btn:hover .arrow { transform: translateX(4px); }

/* ---------- Navbar ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background .3s ease, box-shadow .3s ease, backdrop-filter .3s;
}
.nav.scrolled {
  background: rgba(255, 255, 255, .82);
  backdrop-filter: saturate(180%) blur(14px);
  box-shadow: 0 1px 0 rgba(15, 23, 42, .06), 0 6px 22px -16px rgba(15, 23, 42, .4);
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 70px; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand__mark { flex-shrink: 0; filter: drop-shadow(0 4px 10px rgba(99,102,241,.35)); }
.brand__name { font-weight: 800; font-size: 20px; letter-spacing: -.4px; color: var(--slate-900); }
.brand__name span { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

.nav__links { display: flex; gap: 30px; }
.nav__links a {
  font-size: 15px; font-weight: 500; color: var(--slate-600);
  position: relative; padding: 4px 0; transition: color .2s;
}
.nav__links a::after {
  content: ""; position: absolute; left: 0; bottom: -2px; height: 2px; width: 0;
  background: var(--grad); border-radius: 2px; transition: width .25s ease;
}
.nav__links a:hover { color: var(--slate-900); }
.nav__links a:hover::after { width: 100%; }
.nav__cta { display: flex; align-items: center; gap: 12px; }
.nav__cta .btn { --pad: 9px 18px; font-size: 14px; }

.nav__toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.nav__toggle span { width: 22px; height: 2px; background: var(--slate-700); border-radius: 2px; transition: .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__mobile {
  display: none; flex-direction: column; gap: 4px;
  background: rgba(255,255,255,.97); backdrop-filter: blur(14px);
  padding: 12px 24px 22px; box-shadow: var(--shadow-md);
}
.nav__mobile a { padding: 12px 6px; font-weight: 500; color: var(--slate-700); border-bottom: 1px solid var(--slate-100); }
.nav__mobile .btn { margin-top: 12px; }
.nav__mobile.open { display: flex; }

/* ---------- Hero ---------- */
.hero { position: relative; padding: 150px 0 90px; overflow: hidden; background: var(--ink-900); }
.hero__bg { position: absolute; inset: 0; overflow: hidden; }
.hero__grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(148,163,184,.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148,163,184,.07) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 100%);
}
.hero__glow { position: absolute; border-radius: 50%; filter: blur(70px); opacity: .55; }
.hero__glow--1 { width: 560px; height: 560px; top: -160px; left: -120px; background: radial-gradient(circle, #6366f1, transparent 65%); }
.hero__glow--2 { width: 620px; height: 620px; top: -60px; right: -180px; background: radial-gradient(circle, #22d3ee, transparent 60%); opacity: .4; }

.hero__inner {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center;
}
.hero__copy { max-width: 600px; }
.pill {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 15px; border-radius: 100px;
  background: rgba(129,140,248,.12); border: 1px solid rgba(129,140,248,.28);
  color: var(--indigo-300); font-size: 13.5px; font-weight: 500;
  margin-bottom: 26px;
}
.pill__dot { width: 7px; height: 7px; border-radius: 50%; background: var(--cyan-400); box-shadow: 0 0 0 4px rgba(34,211,238,.2); animation: pulse 2s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .4; } }

.hero__title {
  font-family: var(--font-sans);
  font-weight: 900; font-size: clamp(34px, 5vw, 56px); line-height: 1.12;
  letter-spacing: -1.2px; color: #fff; margin-bottom: 22px;
}
.hero__sub { font-size: clamp(16px, 2vw, 18.5px); color: var(--slate-400); line-height: 1.75; margin-bottom: 34px; }
.hero__sub strong { color: var(--slate-200); font-weight: 600; }
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 44px; }
.hero__actions .btn--ghost { background: rgba(255,255,255,.06); border-color: rgba(255,255,255,.16); color: #e2e8f0; }
.hero__actions .btn--ghost:hover { background: rgba(255,255,255,.12); }

.hero__trust { display: flex; align-items: center; gap: 26px; }
.hero__stat { display: flex; flex-direction: column; }
.hero__stat strong { font-size: 24px; font-weight: 800; color: #fff; letter-spacing: -.5px; }
.hero__stat span { font-size: 13px; color: var(--slate-500); }
.hero__divider { width: 1px; height: 34px; background: rgba(148,163,184,.2); }

/* ---------- Live reasoning trace ---------- */
.hero__demo { position: relative; }
.trace {
  background: linear-gradient(180deg, rgba(27,36,68,.9), rgba(18,25,51,.95));
  border: 1px solid rgba(129,140,248,.22);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-glow);
  overflow: hidden;
  backdrop-filter: blur(8px);
}
.trace__head {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 18px; border-bottom: 1px solid rgba(148,163,184,.12);
  background: rgba(11,16,32,.5);
}
.trace__dots { display: flex; gap: 6px; }
.trace__dots span { width: 11px; height: 11px; border-radius: 50%; background: rgba(148,163,184,.3); }
.trace__dots span:nth-child(1) { background: #f87171; }
.trace__dots span:nth-child(2) { background: #fbbf24; }
.trace__dots span:nth-child(3) { background: #34d399; }
.trace__title { font-size: 13px; color: var(--slate-400); font-weight: 500; flex: 1; }
.trace__badge {
  font-size: 11.5px; font-weight: 600; padding: 4px 10px; border-radius: 100px;
  background: rgba(99,102,241,.18); color: var(--indigo-300);
  border: 1px solid rgba(99,102,241,.3);
}
.trace__badge.done { background: rgba(52,211,153,.16); color: #6ee7b7; border-color: rgba(52,211,153,.32); }

.trace__body { padding: 16px 18px; min-height: 280px; font-family: var(--font-mono); font-size: 13px; }
.trace__step {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 9px 0; opacity: 0; transform: translateY(8px);
  transition: opacity .4s ease, transform .4s ease;
  border-bottom: 1px dashed rgba(148,163,184,.1);
}
.trace__step:last-child { border-bottom: none; }
.trace__step.show { opacity: 1; transform: translateY(0); }
.trace__tick {
  flex-shrink: 0; width: 20px; height: 20px; border-radius: 6px;
  display: grid; place-items: center; font-size: 12px; margin-top: 1px;
}
.trace__tick--in { background: rgba(129,140,248,.18); color: var(--indigo-300); }
.trace__tick--ok { background: rgba(52,211,153,.18); color: #6ee7b7; }
.trace__tick--ai { background: rgba(34,211,238,.16); color: #67e8f9; }
.trace__tick--out { background: var(--grad); color: #fff; }
.trace__text { flex: 1; color: var(--slate-300); line-height: 1.5; }
.trace__text b { color: #fff; font-weight: 600; }
.trace__text .ok { color: #6ee7b7; }
.trace__label { font-size: 11px; color: var(--slate-500); display: block; }
.trace__decision {
  margin-top: 6px; padding: 12px 14px; border-radius: 12px;
  background: linear-gradient(120deg, rgba(99,102,241,.16), rgba(34,211,238,.12));
  border: 1px solid rgba(99,102,241,.3); color: #fff; font-weight: 600;
}
.trace__decision small { display: block; font-weight: 400; color: var(--slate-400); font-family: var(--font-sans); font-size: 12px; margin-top: 4px; }

.trace__foot {
  display: flex; align-items: center; gap: 9px;
  padding: 13px 18px; border-top: 1px solid rgba(148,163,184,.12);
  font-family: var(--font-sans); font-size: 12.5px; color: var(--slate-500);
  background: rgba(11,16,32,.4);
}
.trace__pulse { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan-400); animation: pulse 1.6s infinite; flex-shrink: 0; }

/* ---------- Strip ---------- */
.strip { padding: 40px 0; background: var(--slate-50); border-bottom: 1px solid var(--slate-100); }
.strip__label { text-align: center; font-size: 13px; color: var(--slate-500); margin-bottom: 18px; letter-spacing: .3px; }
.strip__items {
  display: flex; align-items: center; justify-content: center; flex-wrap: wrap;
  gap: 14px 18px; font-weight: 600; color: var(--slate-400); font-size: 15px;
}
.strip__items i { width: 4px; height: 4px; border-radius: 50%; background: var(--slate-300); }

/* ---------- Sections ---------- */
.section { padding: 96px 0; }
.section--alt { background: var(--slate-50); }
.section__head { max-width: 720px; margin: 0 auto 56px; text-align: center; }
.kicker {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 1.4px; text-transform: uppercase;
  color: var(--indigo-600); margin-bottom: 14px;
}
.kicker--light { color: var(--indigo-300); }
.section__head h2 {
  font-size: clamp(27px, 3.6vw, 40px); font-weight: 800; line-height: 1.22;
  letter-spacing: -.8px; color: var(--slate-900); margin-bottom: 16px;
}
.section__head p { font-size: 17px; color: var(--slate-500); }

/* ---------- Problem ---------- */
.problem__grid { display: grid; grid-template-columns: 1fr auto 1fr; gap: 24px; align-items: center; max-width: 880px; margin: 0 auto; }
.problem__card {
  background: #fff; border: 1px solid var(--slate-200); border-radius: var(--radius-lg);
  padding: 32px 30px; box-shadow: var(--shadow-sm);
}
.problem__card--good { border-color: rgba(99,102,241,.3); box-shadow: var(--shadow-lg); }
.problem__bad, .problem__good { font-weight: 800; font-size: 18px; margin-bottom: 18px; display: flex; align-items: center; gap: 8px; }
.problem__bad { color: var(--slate-400); }
.problem__bad::before { content: "✕"; display: grid; place-items: center; width: 24px; height: 24px; border-radius: 8px; background: var(--slate-100); color: var(--slate-400); font-size: 13px; }
.problem__good { color: var(--indigo-600); }
.problem__good::before { content: "✓"; display: grid; place-items: center; width: 24px; height: 24px; border-radius: 8px; background: var(--grad); color: #fff; font-size: 13px; }
.problem__card ul { display: flex; flex-direction: column; gap: 13px; }
.problem__card li { position: relative; padding-left: 22px; color: var(--slate-600); font-size: 15px; }
.problem__card li::before { content: "—"; position: absolute; left: 0; color: var(--slate-300); }
.problem__card--good li::before { content: "→"; color: var(--indigo-500); font-weight: 700; }
.problem__vs { font-weight: 800; color: var(--slate-300); font-size: 15px; letter-spacing: 1px; }

/* ---------- Cards (capabilities) ---------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card {
  position: relative; background: #fff; border: 1px solid var(--slate-200);
  border-radius: var(--radius); padding: 30px 28px;
  transition: transform .28s ease, box-shadow .28s ease, border-color .28s;
  overflow: hidden;
}
.card::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px;
  background: var(--grad); -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude; opacity: 0; transition: opacity .3s;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.card:hover::before { opacity: 1; }
.card__icon {
  width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center;
  background: linear-gradient(135deg, rgba(99,102,241,.12), rgba(34,211,238,.12));
  color: var(--indigo-600); margin-bottom: 20px;
}
.card__icon svg { width: 26px; height: 26px; }
.card h3 { font-size: 19px; font-weight: 700; color: var(--slate-900); margin-bottom: 10px; letter-spacing: -.3px; }
.card p { font-size: 15px; color: var(--slate-600); line-height: 1.7; }

/* ---------- Scenarios ---------- */
.scenarios { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.scenario {
  position: relative; background: #fff; border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg); padding: 34px 30px; overflow: hidden;
  transition: transform .28s ease, box-shadow .28s;
}
.scenario:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.scenario__num {
  position: absolute; top: 22px; right: 26px;
  font-family: var(--font-mono); font-size: 40px; font-weight: 700;
  color: transparent; background: var(--grad); -webkit-background-clip: text; background-clip: text;
  opacity: .16;
}
.scenario__icon { font-size: 34px; margin-bottom: 18px; }
.scenario h3 { font-size: 22px; font-weight: 800; color: var(--slate-900); margin-bottom: 12px; letter-spacing: -.4px; }
.scenario__desc { font-size: 15px; color: var(--slate-600); line-height: 1.7; margin-bottom: 20px; }
.scenario__list { display: flex; flex-direction: column; gap: 11px; padding-top: 18px; border-top: 1px solid var(--slate-100); }
.scenario__list li { position: relative; padding-left: 26px; font-size: 14.5px; color: var(--slate-700); }
.scenario__list li::before {
  content: "✓"; position: absolute; left: 0; top: 1px;
  width: 18px; height: 18px; border-radius: 6px; display: grid; place-items: center;
  background: rgba(99,102,241,.12); color: var(--indigo-600); font-size: 11px; font-weight: 700;
}

/* ---------- Steps ---------- */
.steps { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.steps__line {
  position: absolute; top: 26px; left: 12%; right: 12%; height: 2px;
  background: linear-gradient(90deg, var(--indigo-400), var(--cyan-400));
  opacity: .3;
}
.step { position: relative; text-align: center; padding: 0 8px; }
.step__num {
  width: 54px; height: 54px; margin: 0 auto 22px; border-radius: 16px;
  display: grid; place-items: center; font-size: 22px; font-weight: 800; color: #fff;
  background: var(--grad); box-shadow: var(--shadow-lg);
}
.step h3 { font-size: 18px; font-weight: 700; color: var(--slate-900); margin-bottom: 10px; }
.step p { font-size: 14.5px; color: var(--slate-600); line-height: 1.7; }

/* ---------- Why (dark) ---------- */
.section--dark { background: var(--ink-900); position: relative; overflow: hidden; }
.section--dark::before {
  content: ""; position: absolute; width: 700px; height: 700px; border-radius: 50%;
  top: -300px; left: 50%; transform: translateX(-50%);
  background: radial-gradient(circle, rgba(99,102,241,.25), transparent 60%); filter: blur(60px);
}
.section--dark .section__head h2 { color: #fff; }
.section--dark .section__head { position: relative; z-index: 1; }
.why__grid { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.why__item {
  background: rgba(255,255,255,.035); border: 1px solid rgba(148,163,184,.14);
  border-radius: var(--radius); padding: 28px 24px;
  transition: transform .28s ease, background .28s, border-color .28s;
}
.why__item:hover { transform: translateY(-6px); background: rgba(255,255,255,.06); border-color: rgba(129,140,248,.4); }
.why__icon { font-size: 30px; margin-bottom: 16px; }
.why__item h3 { font-size: 17px; font-weight: 700; color: #fff; margin-bottom: 9px; }
.why__item p { font-size: 14px; color: var(--slate-400); line-height: 1.65; }

/* ---------- Pricing ---------- */
.pricing { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; align-items: stretch; max-width: 1020px; margin: 0 auto; }
.plan {
  position: relative; background: #fff; border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg); padding: 34px 30px; display: flex; flex-direction: column;
  transition: transform .28s ease, box-shadow .28s;
}
.plan:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.plan--featured {
  border-color: transparent; box-shadow: var(--shadow-lg);
  background:
    linear-gradient(#fff, #fff) padding-box,
    var(--grad) border-box;
  border: 1.5px solid transparent;
}
.plan--featured:hover { transform: translateY(-10px); }
.plan__tag {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--grad); color: #fff; font-size: 12px; font-weight: 700;
  padding: 5px 16px; border-radius: 100px; box-shadow: var(--shadow-md);
}
.plan__name { font-size: 20px; font-weight: 800; color: var(--slate-900); margin-bottom: 6px; }
.plan__desc { font-size: 14px; color: var(--slate-500); margin-bottom: 22px; min-height: 40px; }
.plan__price { font-size: 42px; font-weight: 800; color: var(--slate-900); letter-spacing: -1px; margin-bottom: 22px; display: flex; align-items: baseline; gap: 2px; }
.plan__price--text { font-size: 30px; }
.plan__cur { font-size: 22px; font-weight: 700; }
.plan__per { font-size: 15px; font-weight: 500; color: var(--slate-500); margin-left: 4px; }
.plan .btn { margin-bottom: 26px; }
.plan__feat { display: flex; flex-direction: column; gap: 13px; }
.plan__feat li { position: relative; padding-left: 26px; font-size: 14.5px; color: var(--slate-700); }
.plan__feat li::before {
  content: "✓"; position: absolute; left: 0; top: 1px;
  width: 18px; height: 18px; border-radius: 50%; display: grid; place-items: center;
  background: rgba(99,102,241,.12); color: var(--indigo-600); font-size: 10px; font-weight: 700;
}
.plan--featured .plan__feat li::before { background: var(--grad); color: #fff; }

/* ---------- CTA ---------- */
.cta { position: relative; padding: 100px 0; background: var(--ink-900); overflow: hidden; text-align: center; }
.cta__bg { position: absolute; inset: 0; }
.cta__glow {
  position: absolute; width: 800px; height: 500px; left: 50%; top: 50%; transform: translate(-50%, -50%);
  background: radial-gradient(ellipse, rgba(99,102,241,.4), rgba(34,211,238,.15) 40%, transparent 70%);
  filter: blur(40px);
}
.cta__inner { position: relative; z-index: 1; max-width: 680px; }
.cta h2 { font-size: clamp(28px, 4vw, 42px); font-weight: 800; color: #fff; letter-spacing: -.8px; margin-bottom: 16px; line-height: 1.2; }
.cta p { font-size: 17px; color: var(--slate-400); margin-bottom: 34px; }
.cta__form { display: flex; gap: 12px; max-width: 540px; margin: 0 auto 16px; flex-wrap: wrap; }
.cta__form input {
  flex: 1; min-width: 160px; padding: 15px 18px; border-radius: 14px;
  background: rgba(255,255,255,.06); border: 1px solid rgba(148,163,184,.22);
  color: #fff; font-size: 15px; transition: border-color .2s, background .2s;
}
.cta__form input::placeholder { color: var(--slate-500); }
.cta__form input:focus { outline: none; border-color: var(--indigo-400); background: rgba(255,255,255,.1); }
.cta__form .btn { flex-shrink: 0; }
.cta__note { font-size: 13px; color: var(--slate-500); margin-bottom: 28px; }
.cta__note.success { color: #6ee7b7; font-weight: 500; }
.cta__alt { font-size: 15px; color: var(--slate-400); }
.cta__alt a { color: var(--indigo-300); font-weight: 600; border-bottom: 1px solid rgba(165,180,252,.35); }
.cta__alt a:hover { color: #fff; }

/* ---------- Footer ---------- */
.footer { background: #070a16; color: var(--slate-400); padding: 64px 0 0; }
.footer__inner { display: grid; grid-template-columns: 1.4fr 2fr; gap: 48px; padding-bottom: 48px; border-bottom: 1px solid rgba(148,163,184,.12); }
.footer__brand .brand__name { color: #fff; }
.footer__tag { margin-top: 18px; font-size: 14.5px; color: var(--slate-500); line-height: 1.7; }
.footer__cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.footer__col h4 { font-size: 14px; font-weight: 700; color: #fff; margin-bottom: 16px; }
.footer__col a { display: block; font-size: 14.5px; color: var(--slate-400); padding: 6px 0; transition: color .2s; }
.footer__col a:hover { color: var(--indigo-300); }
.footer__bottom { display: flex; align-items: center; justify-content: space-between; padding: 24px 0; font-size: 13.5px; color: var(--slate-500); flex-wrap: wrap; gap: 8px; }
.footer__legal a:hover { color: var(--indigo-300); }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s cubic-bezier(.16,1,.3,1), transform .7s cubic-bezier(.16,1,.3,1); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero__inner { grid-template-columns: 1fr; gap: 48px; }
  .hero__demo { max-width: 520px; }
  .cards, .scenarios, .why__grid, .pricing { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); gap: 40px 24px; }
  .steps__line { display: none; }
  .footer__inner { grid-template-columns: 1fr; gap: 36px; }
}
@media (max-width: 760px) {
  .nav__links, .nav__cta { display: none; }
  .nav__toggle { display: flex; }
  .hero { padding: 120px 0 70px; }
  .hero__trust { gap: 16px; }
  .hero__stat strong { font-size: 20px; }
  .section { padding: 70px 0; }
  .cards, .scenarios, .why__grid, .pricing { grid-template-columns: 1fr; }
  .problem__grid { grid-template-columns: 1fr; }
  .problem__vs { margin: 0 auto; }
  .footer__cols { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 440px) {
  .hero__trust { flex-wrap: wrap; }
  .hero__divider { display: none; }
  .cta__form { flex-direction: column; }
  .cta__form .btn { width: 100%; }
}

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