/* ============================================================
   KairoAI - styles
   Palette: clinical pine + porcelain + seized-moment gold
   Type: Fraunces (display serif) · Space Grotesk (UI)
   ============================================================ */

:root {
  /* colour - white / black / blue */
  --ink:      #0B0B0F;   /* near-black */
  --pine:     #121319;   /* dark surface */
  --teal:     #2456FF;   /* accent blue */
  --teal-2:   #5B7CFF;
  --sage:     #EAF0FF;   /* light blue tint */
  --paper:    #FFFFFF;   /* white */
  --cloud:    #F6F8FC;   /* card surface */
  --gold:     #2456FF;   /* accent (blue) */
  --gold-2:   #5B7CFF;
  --gold-3:   #C9D6FF;
  --blue:      #2456FF;
  --blue-dark: #1637CC;
  --line:     rgba(11, 11, 15, 0.10);
  --ink-70:   rgba(11, 11, 15, 0.68);
  --ink-55:   rgba(11, 11, 15, 0.52);
  --cream-70: rgba(255, 255, 255, 0.72);
  --cream-45: rgba(255, 255, 255, 0.48);

  /* type */
  --serif: "Fraunces", Georgia, serif;
  --sans:  "Space Grotesk", system-ui, sans-serif;

  /* space */
  --pad: clamp(1.25rem, 5vw, 6rem);
  --maxw: 1200px;
  --r: 18px;
  --r-lg: 28px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--sans);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  overflow-x: hidden;
  font-weight: 400;
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
em { font-style: italic; }
sup { font-size: 0.58em; vertical-align: super; color: var(--teal); font-weight: 600; }

/* ---------- grain overlay ---------- */
.grain {
  position: fixed; inset: 0; z-index: 9999; pointer-events: none;
  opacity: 0.22;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
}

/* ---------- typography helpers ---------- */
h1, h2, h3, h4 { font-family: var(--serif); font-weight: 400; line-height: 1.04; letter-spacing: -0.02em; font-optical-sizing: auto; }

.eyebrow {
  font-family: var(--sans); font-size: 0.74rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.22em; color: var(--teal);
  display: inline-flex; align-items: center; gap: 0.6em; margin-bottom: 1.1rem;
}
.eyebrow::before { content: ""; width: 26px; height: 1px; background: var(--teal); display: inline-block; }
.eyebrow--gold { color: var(--gold); }
.eyebrow--gold::before { background: var(--gold); }

/* ---------- buttons ---------- */
.btn {
  --bg: var(--ink); --fg: var(--paper);
  display: inline-flex; align-items: center; gap: 0.55em;
  font-family: var(--sans); font-weight: 600; font-size: 0.94rem;
  letter-spacing: -0.01em; padding: 0.85em 1.4em; border-radius: 100px;
  background: var(--bg); color: var(--fg); border: 1px solid transparent;
  cursor: pointer; transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), background 0.3s;
  white-space: nowrap;
}
.btn__arrow { transition: transform 0.35s var(--ease); }
.btn:hover { transform: translateY(-2px); }
.btn:hover .btn__arrow { transform: translateX(4px); }

.btn--gold {
  --bg: var(--blue); color: #fff; box-shadow: 0 8px 24px -10px rgba(36, 86, 255, 0.65);
}
.btn--gold:hover { box-shadow: 0 14px 34px -10px rgba(36, 86, 255, 0.8); }

.btn--ghost {
  background: transparent; color: var(--ink); border-color: var(--line);
}
.btn--ghost:hover { border-color: var(--ink); background: rgba(10,31,28,0.03); }

.btn--lg { padding: 1.05em 1.7em; font-size: 1rem; }
.btn--block { width: 100%; justify-content: center; }

/* ============================================================
   NAV
   ============================================================ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background 0.4s, backdrop-filter 0.4s, box-shadow 0.4s, padding 0.4s;
  padding: 1.1rem 0;
}
.nav.scrolled {
  background: rgba(244, 241, 234, 0.78);
  backdrop-filter: blur(16px) saturate(1.4);
  box-shadow: 0 1px 0 var(--line);
  padding: 0.65rem 0;
}
.nav__inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0 var(--pad);
  display: flex; align-items: center; justify-content: space-between; gap: 1.5rem;
}

.brand { display: inline-flex; align-items: center; gap: 0.6rem; }
.brand__mark {
  width: 27px; height: 27px; flex: none; display: block;
  transition: transform 0.35s var(--ease);
}
.brand:hover .brand__mark { transform: rotate(-6deg) scale(1.05); }
.brand__word { font-family: var(--serif); font-size: 1.32rem; letter-spacing: -0.03em; }
.brand__ai { color: var(--teal); font-style: italic; }

.nav__links { display: flex; gap: 1.9rem; }
.nav__links a {
  font-size: 0.9rem; font-weight: 500; color: var(--ink-70);
  position: relative; transition: color 0.25s;
}
.nav__links a::after {
  content: ""; position: absolute; left: 0; bottom: -5px; width: 0; height: 1.5px;
  background: var(--gold); transition: width 0.3s var(--ease);
}
.nav__links a:hover { color: var(--ink); }
.nav__links a:hover::after { width: 100%; }

.nav__burger { display: none; background: none; border: 0; cursor: pointer; width: 30px; height: 24px; position: relative; }
.nav__burger span { position: absolute; left: 3px; right: 3px; height: 2px; background: var(--ink); border-radius: 2px; transition: 0.3s var(--ease); }
.nav__burger span:nth-child(1) { top: 7px; }
.nav__burger span:nth-child(2) { bottom: 7px; }
.nav.open .nav__burger span:nth-child(1) { top: 11px; transform: rotate(45deg); }
.nav.open .nav__burger span:nth-child(2) { bottom: 11px; transform: rotate(-45deg); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative; padding: clamp(8rem, 16vh, 12rem) var(--pad) clamp(4rem, 8vh, 6rem);
  max-width: var(--maxw); margin: 0 auto; overflow: visible;
}
.hero__atmos { position: absolute; inset: -10% -20% 0; z-index: -1; overflow: hidden; }
.orb { position: absolute; border-radius: 50%; filter: blur(60px); opacity: 0.55; will-change: transform; }
.orb--1 { width: 42vw; height: 42vw; background: radial-gradient(circle, var(--teal-2), transparent 70%); top: -8%; right: -6%; animation: drift 26s var(--ease) infinite alternate; }
.orb--2 { width: 34vw; height: 34vw; background: radial-gradient(circle, var(--gold-3), transparent 70%); top: 24%; left: -10%; opacity: 0.5; animation: drift 32s var(--ease) infinite alternate-reverse; }
.orb--3 { width: 26vw; height: 26vw; background: radial-gradient(circle, var(--sage), transparent 70%); bottom: -6%; right: 22%; animation: drift 22s var(--ease) infinite alternate; }

@keyframes drift {
  from { transform: translate(0,0) scale(1); }
  to   { transform: translate(4%, 5%) scale(1.12); }
}

.hero__inner {
  display: grid; grid-template-columns: 1.05fr 0.95fr; gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}

.kicker {
  display: inline-flex; align-items: center; gap: 0.6em;
  font-size: 0.82rem; font-weight: 500; color: var(--pine);
  background: rgba(255,255,255,0.6); border: 1px solid var(--line);
  padding: 0.5em 1em; border-radius: 100px; margin-bottom: 1.6rem;
  backdrop-filter: blur(6px);
}
.kicker__dot { width: 8px; height: 8px; border-radius: 50%; background: var(--gold); box-shadow: 0 0 0 0 rgba(201,162,75,0.6); animation: pulse 2.4s infinite; }
@keyframes pulse { 0%{box-shadow:0 0 0 0 rgba(201,162,75,0.55);} 70%{box-shadow:0 0 0 9px rgba(201,162,75,0);} 100%{box-shadow:0 0 0 0 rgba(201,162,75,0);} }

.hero__title {
  font-size: clamp(2.7rem, 6.4vw, 5rem);
  letter-spacing: -0.035em; margin-bottom: 1.5rem;
}
.hero__title em {
  font-style: italic; color: var(--blue);
  font-variation-settings: "SOFT" 40;
  position: relative; isolation: isolate; padding: 0 0.12em;
}
.hero__title em::before {
  content: ""; position: absolute; z-index: -1;
  left: -0.04em; right: -0.04em; top: 0.12em; bottom: 0.1em;
  background: linear-gradient(100deg, var(--sage), var(--gold-3) 55%, var(--gold-2) 130%);
  border-radius: 0.9em 1.1em 0.85em 1.15em / 1.15em 0.9em 1.2em 0.9em;
  transform: rotate(-1.6deg);
  opacity: 0.85;
}

.hero__sub { font-size: clamp(1.02rem, 1.5vw, 1.18rem); color: var(--ink-70); max-width: 34rem; margin-bottom: 2.1rem; }

.hero__cta { display: flex; gap: 0.9rem; flex-wrap: wrap; margin-bottom: 1.8rem; }

.hero__trust { font-size: 0.86rem; color: var(--ink-55); display: flex; align-items: center; gap: 0.5em; }
.hero__trust span { color: var(--gold); }

/* --- chat demo --- */
.demo { position: relative; }
.demo__glow {
  position: absolute; inset: 8% 4%; z-index: -1; border-radius: 50%;
  background: radial-gradient(circle, rgba(44,110,99,0.35), transparent 70%);
  filter: blur(50px);
}
.demo__card {
  background: linear-gradient(180deg, var(--ink), var(--pine));
  border-radius: var(--r-lg); padding: 1.1rem; color: var(--paper);
  box-shadow: 0 40px 80px -30px rgba(10,31,28,0.55), inset 0 1px 0 rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  transform: rotate(1.2deg);
  transition: transform 0.5s var(--ease);
}
.demo:hover .demo__card { transform: rotate(0deg) translateY(-4px); }

.demo__bar { display: flex; align-items: center; gap: 0.7rem; padding: 0.4rem 0.5rem 0.9rem; border-bottom: 1px solid rgba(255,255,255,0.09); }
.demo__avatar {
  width: 38px; height: 38px; border-radius: 12px; flex: none;
  background: linear-gradient(135deg, var(--gold), var(--gold-2)); color: var(--ink);
  display: grid; place-items: center; font-family: var(--serif); font-size: 1.1rem;
}
.demo__id { display: flex; flex-direction: column; line-height: 1.2; }
.demo__id strong { font-size: 0.96rem; }
.demo__status { font-size: 0.72rem; color: var(--cream-70); display: flex; align-items: center; gap: 0.4em; }
.demo__status i { width: 6px; height: 6px; border-radius: 50%; background: var(--blue-2, #5B7CFF); box-shadow: 0 0 8px var(--blue-2, #5B7CFF); }
.demo__chan { margin-left: auto; font-size: 0.7rem; padding: 0.35em 0.8em; border-radius: 100px; background: rgba(255,255,255,0.09); color: var(--cream-70); border: 1px solid rgba(255,255,255,0.1); transition: 0.3s; }

.demo__thread { display: flex; flex-direction: column; gap: 0.55rem; padding: 1rem 0.4rem; min-height: 250px; }
.bub {
  max-width: 82%; padding: 0.7em 0.95em; border-radius: 16px; font-size: 0.88rem; line-height: 1.4;
  opacity: 0; transform: translateY(8px); animation: bubIn 0.45s var(--ease) forwards;
}
@keyframes bubIn { to { opacity: 1; transform: translateY(0); } }
.bub--in { align-self: flex-start; background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.06); border-bottom-left-radius: 5px; }
.bub--out { align-self: flex-end; background: linear-gradient(135deg, var(--teal), var(--teal-2)); color: #fff; border-bottom-right-radius: 5px; }
.bub--typing { display: inline-flex; gap: 4px; align-self: flex-start; background: rgba(255,255,255,0.08); padding: 0.85em 1em; border-radius: 16px; border-bottom-left-radius: 5px; }
.bub--typing span { width: 6px; height: 6px; border-radius: 50%; background: var(--cream-70); animation: typing 1.2s infinite; }
.bub--typing span:nth-child(2){ animation-delay: 0.15s; } .bub--typing span:nth-child(3){ animation-delay: 0.3s; }
@keyframes typing { 0%,60%,100%{transform:translateY(0);opacity:0.4;} 30%{transform:translateY(-4px);opacity:1;} }
.bub__meta { display:block; font-size: 0.66rem; margin-top: 0.3em; opacity: 0.6; }

.demo__foot { display: flex; justify-content: space-between; align-items: center; padding: 0.7rem 0.5rem 0.3rem; border-top: 1px solid rgba(255,255,255,0.09); }
.demo__time { font-size: 0.72rem; color: var(--cream-45); }
.demo__ai { font-size: 0.72rem; color: var(--gold-2); }

/* scroll cue */
.scroll-cue { display: inline-flex; align-items: center; gap: 0.7em; margin-top: 3.5rem; font-size: 0.8rem; color: var(--ink-55); }
.scroll-cue span { width: 22px; height: 34px; border: 1.5px solid var(--line); border-radius: 100px; position: relative; }
.scroll-cue span::after { content:""; position:absolute; top: 6px; left: 50%; transform: translateX(-50%); width: 4px; height: 7px; border-radius: 4px; background: var(--gold); animation: scrolldot 1.8s infinite; }
@keyframes scrolldot { 0%{opacity:0;top:6px;} 40%{opacity:1;} 80%{opacity:0;top:16px;} 100%{opacity:0;} }

/* ============================================================
   MYTH STRIP
   ============================================================ */
.myth {
  max-width: var(--maxw); margin: 0 auto; padding: clamp(2.5rem,5vw,4rem) var(--pad);
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.myth p { font-family: var(--serif); font-size: clamp(1.3rem, 2.7vw, 2rem); line-height: 1.35; max-width: 46rem; color: var(--ink-70); letter-spacing: -0.02em; }
.myth strong { color: var(--ink); font-weight: 500; }
.myth span { color: var(--gold); font-style: italic; }

/* ============================================================
   SECTIONS (shared)
   ============================================================ */
.section { max-width: var(--maxw); margin: 0 auto; padding: clamp(4.5rem, 10vw, 8rem) var(--pad); }
.section__head { max-width: 44rem; margin: 0 auto clamp(3rem,5vw,4.5rem); text-align: center; }
.section__head--left { margin: 0; text-align: left; }
.section__head h2 { font-size: clamp(1.9rem, 4.4vw, 3.2rem); margin-bottom: 1.3rem; letter-spacing: -0.03em; }
.section__lead { color: var(--ink-70); font-size: clamp(1rem,1.4vw,1.12rem); max-width: 40rem; margin-inline: auto; }
.section__head--left .section__lead { margin-inline: 0; }
.section__note { text-align: center; max-width: 40rem; margin: clamp(2.5rem,4vw,3.5rem) auto 0; color: var(--ink-70); font-family: var(--serif); font-size: clamp(1.1rem,1.8vw,1.4rem); line-height: 1.5; letter-spacing: -0.02em; }

/* ---------- PROBLEM stats ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.2rem; }
.stat {
  background: var(--cloud); border: 1px solid var(--line); border-radius: var(--r);
  padding: 1.8rem 1.5rem; transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease), border-color 0.4s;
}
.stat:hover { transform: translateY(-6px); box-shadow: 0 24px 48px -24px rgba(10,31,28,0.28); border-color: var(--gold); }
.stat__num { font-family: var(--serif); font-size: clamp(2.6rem, 4vw, 3.6rem); line-height: 1; color: var(--teal); letter-spacing: -0.04em; margin-bottom: 0.7rem; }
.stat:nth-child(2) .stat__num, .stat:nth-child(4) .stat__num { color: var(--gold); }
.stat h3 { font-family: var(--sans); font-weight: 600; font-size: 1rem; letter-spacing: -0.01em; margin-bottom: 0.6rem; }
.stat p { font-size: 0.87rem; color: var(--ink-70); line-height: 1.55; }

/* ---------- SOLUTIONS cards ---------- */
.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.3rem; }
.card {
  position: relative; background: var(--cloud); border: 1px solid var(--line);
  border-radius: var(--r-lg); padding: clamp(1.8rem, 3vw, 2.6rem);
  overflow: hidden; transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.card::before {
  content: ""; position: absolute; inset: 0; opacity: 0; transition: opacity 0.5s;
  background: radial-gradient(120% 100% at 100% 0%, rgba(201,162,75,0.12), transparent 55%);
}
.card:hover { transform: translateY(-6px); box-shadow: 0 30px 60px -30px rgba(10,31,28,0.32); }
.card:hover::before { opacity: 1; }
.card__icon { width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center; background: var(--ink); color: var(--gold-2); margin-bottom: 1.3rem; }
.card__icon svg { width: 26px; height: 26px; }
.card__tag { position: absolute; top: 1.6rem; right: 1.6rem; font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.12em; font-weight: 600; color: var(--teal); background: var(--sage); padding: 0.4em 0.8em; border-radius: 100px; }
.card h3 { font-size: clamp(1.4rem, 2.4vw, 1.9rem); margin-bottom: 0.35rem; }
.card__chan { font-size: 0.8rem; font-weight: 600; letter-spacing: 0.04em; color: var(--gold); text-transform: uppercase; margin-bottom: 1rem; }
.card p { color: var(--ink-70); font-size: 0.95rem; margin-bottom: 0.9rem; }
.card__fix { font-size: 0.85rem; color: var(--pine); border-top: 1px dashed var(--line); padding-top: 0.9rem; margin-bottom: 0; }
.card__fix b { color: var(--ink); }

/* ---------- HOW steps ---------- */
.how { }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; list-style: none; counter-reset: s; }
.step { position: relative; padding: 2rem 1.6rem; border-radius: var(--r); background: linear-gradient(180deg, var(--ink), var(--pine)); color: var(--paper); overflow: hidden; }
.step:nth-child(2) { background: linear-gradient(180deg, var(--pine), var(--teal)); }
.step:nth-child(3) { background: linear-gradient(180deg, var(--teal), var(--pine)); }
.step__no { font-family: var(--serif); font-size: 2.6rem; color: var(--gold-2); display: block; margin-bottom: 0.8rem; letter-spacing: -0.04em; }
.step h3 { font-size: 1.5rem; margin-bottom: 0.6rem; color: #fff; }
.step p { font-size: 0.92rem; color: var(--cream-70); }

/* ---------- RESULTS ---------- */
.results { }
.results__inner { display: grid; grid-template-columns: 0.95fr 1.05fr; gap: clamp(2rem,5vw,4rem); align-items: center; }
.results .btn { margin-top: 2rem; }
.roi { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.roi__item { background: var(--cloud); border: 1px solid var(--line); border-radius: var(--r); padding: 1.7rem 1.4rem; transition: 0.4s var(--ease); }
.roi__item:hover { border-color: var(--gold); transform: translateY(-4px); }
.roi__num { font-family: var(--serif); font-size: clamp(1.8rem, 3vw, 2.5rem); color: var(--ink); letter-spacing: -0.04em; line-height: 1; margin-bottom: 0.7rem; }
.roi__num span { color: var(--teal); }
.roi__item p { font-size: 0.86rem; color: var(--ink-70); }

/* ---------- CALCULATOR ---------- */
.calc__panel {
  display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 0;
  border: 1px solid var(--line); border-radius: var(--r-lg); overflow: hidden;
  background: var(--cloud);
}
.calc__controls { padding: clamp(1.8rem, 3.5vw, 3rem); display: flex; flex-direction: column; gap: 2rem; }
.calc__row label {
  display: flex; justify-content: space-between; align-items: baseline; gap: 1rem;
  font-size: 0.9rem; font-weight: 500; color: var(--ink-70); margin-bottom: 1rem;
}
.calc__row output { font-family: var(--serif); font-size: 1.5rem; color: var(--blue); letter-spacing: -0.03em; }
.calc__row input[type="range"] {
  -webkit-appearance: none; appearance: none; width: 100%; height: 6px; border-radius: 100px;
  background: var(--sage); outline: none; cursor: pointer;
}
.calc__row input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none; width: 26px; height: 26px; border-radius: 50%;
  background: var(--blue); border: 4px solid #fff; box-shadow: 0 3px 10px -2px rgba(36,86,255,0.6);
  transition: transform 0.2s var(--ease);
}
.calc__row input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.12); }
.calc__row input[type="range"]::-moz-range-thumb {
  width: 22px; height: 22px; border-radius: 50%; background: var(--blue); border: 4px solid #fff; cursor: pointer;
  box-shadow: 0 3px 10px -2px rgba(36,86,255,0.6);
}
.calc__assume { font-size: 0.82rem; color: var(--ink-55); margin-top: -0.5rem; }
.calc__result {
  background: var(--ink); color: #fff; padding: clamp(1.8rem, 3.5vw, 3rem);
  display: flex; flex-direction: column; justify-content: center; gap: 0.4rem; text-align: left;
}
.calc__label { font-size: 0.76rem; text-transform: uppercase; letter-spacing: 0.16em; color: var(--cream-70); }
.calc__big { font-family: var(--serif); font-size: clamp(2.8rem, 6vw, 4.4rem); line-height: 1; letter-spacing: -0.04em; color: #fff; }
.calc__sub { color: var(--cream-70); font-size: 0.95rem; margin-bottom: 1.1rem; }
.calc__sub span { color: var(--gold-2); font-weight: 600; }
.calc__metric {
  font-size: 0.9rem; color: var(--cream-70); border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 1.1rem; margin-bottom: 1.5rem;
}
.calc__metric b { color: #fff; font-family: var(--serif); font-size: 1.5rem; letter-spacing: -0.03em; margin-right: 0.15em; }
.calc__result .btn { align-self: flex-start; }

/* evidence strip under the calculator */
.evidence {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; margin-top: 1.3rem;
}
.evidence__item {
  display: flex; align-items: baseline; gap: 0.7rem; padding: 1.2rem 1.4rem;
  background: var(--cloud); border: 1px solid var(--line); border-radius: var(--r);
}
.evidence__item strong { font-family: var(--serif); font-size: clamp(1.6rem, 2.6vw, 2.1rem); color: var(--blue); letter-spacing: -0.03em; line-height: 1; flex: none; }
.evidence__item span { font-size: 0.86rem; color: var(--ink-70); line-height: 1.4; }

/* ---------- WHY ---------- */
.why__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.2rem; }
.why__item { padding: 1.6rem 0; border-top: 2px solid var(--ink); }
.why__item h3 { font-size: 1.2rem; margin-bottom: 0.6rem; }
.why__item p { font-size: 0.9rem; color: var(--ink-70); }

/* ---------- FAQ ---------- */
.accordion { max-width: 48rem; margin: 0 auto; }
.ac { border-bottom: 1px solid var(--line); }
.ac summary {
  list-style: none; cursor: pointer; padding: 1.4rem 0; display: flex; align-items: center;
  justify-content: space-between; gap: 1rem; font-family: var(--serif); font-size: clamp(1.1rem,1.9vw,1.4rem); letter-spacing: -0.02em;
  transition: color 0.25s;
}
.ac summary::-webkit-details-marker { display: none; }
.ac summary:hover { color: var(--teal); }
.ac__ico { position: relative; width: 20px; height: 20px; flex: none; }
.ac__ico::before, .ac__ico::after { content: ""; position: absolute; background: var(--gold); border-radius: 2px; transition: transform 0.35s var(--ease); }
.ac__ico::before { top: 9px; left: 0; width: 20px; height: 2px; }
.ac__ico::after { left: 9px; top: 0; width: 2px; height: 20px; }
.ac[open] .ac__ico::after { transform: rotate(90deg); opacity: 0; }
.ac p { padding: 0 0 1.5rem; color: var(--ink-70); max-width: 40rem; font-size: 0.98rem; }
.ac[open] summary { color: var(--teal); }

/* ============================================================
   BOOK / CTA
   ============================================================ */
.book { position: relative; background: var(--ink); color: var(--paper); overflow: hidden; margin-top: clamp(2rem,5vw,4rem); }
.book__atmos { position: absolute; inset: 0; z-index: 0; overflow: hidden; }
.orb--b1 { width: 40vw; height: 40vw; background: radial-gradient(circle, rgba(44,110,99,0.5), transparent 70%); top: -15%; left: -8%; filter: blur(70px); animation: drift 28s var(--ease) infinite alternate; }
.orb--b2 { width: 34vw; height: 34vw; background: radial-gradient(circle, rgba(201,162,75,0.28), transparent 70%); bottom: -18%; right: -6%; filter: blur(70px); animation: drift 24s var(--ease) infinite alternate-reverse; }
.book__inner {
  position: relative; z-index: 1; max-width: var(--maxw); margin: 0 auto;
  padding: clamp(4.5rem,9vw,7rem) var(--pad);
  display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2.5rem,5vw,5rem); align-items: center;
}
.book__copy h2 { color: #fff; font-size: clamp(1.9rem,4vw,3rem); margin-bottom: 1.3rem; }
.book__copy .section__lead { color: var(--cream-70); margin-inline: 0; }
.book__list { list-style: none; margin: 1.8rem 0; display: grid; gap: 0.8rem; }
.book__list li { position: relative; padding-left: 1.9rem; color: var(--cream-70); font-size: 0.96rem; }
.book__list li::before { content: "✦"; position: absolute; left: 0; top: -1px; color: var(--gold); }
.book__alt { font-size: 0.9rem; color: var(--cream-45); }
.book__alt a { color: var(--gold-2); text-decoration: underline; text-underline-offset: 3px; }

/* embedded Calendly scheduler */
.book__scheduler { width: 100%; }
#calendlyInline {
  min-width: 320px; height: 700px;
  border-radius: 20px; overflow: hidden; background: #fff;
  box-shadow: 0 30px 70px -30px rgba(0,0,0,0.6);
}
@media (max-width: 640px){ #calendlyInline { height: 900px; } }

/* form */
.form { background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.1); border-radius: var(--r-lg); padding: clamp(1.6rem,3vw,2.4rem); backdrop-filter: blur(10px); }
.field { margin-bottom: 1.1rem; }
.field--split { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.field label { display: block; font-size: 0.78rem; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--cream-70); margin-bottom: 0.5rem; }
.field input, .field select {
  width: 100%; font-family: var(--sans); font-size: 0.96rem; color: var(--paper);
  background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.14);
  border-radius: 12px; padding: 0.85em 1em; transition: border-color 0.25s, background 0.25s;
}
.field input::placeholder { color: var(--cream-45); }
.field input:focus, .field select:focus { outline: none; border-color: var(--gold); background: rgba(255,255,255,0.08); }
.field select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' fill='none' stroke='%23E2C079' stroke-width='2'%3E%3Cpath d='M3 5l4 4 4-4'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 1em center; }
.field select option { color: #111; }
.form button { margin-top: 0.5rem; }
.form__note { font-size: 0.82rem; color: var(--cream-45); margin-top: 1rem; text-align: center; }
.form__note a { color: var(--gold-2); text-decoration: underline; text-underline-offset: 3px; }
.form--sent { text-align: center; display: grid; place-items: center; min-height: 340px; gap: 0.8rem; }
.form--sent h3 { font-size: 1.8rem; color: #fff; }
.form--sent p { color: var(--cream-70); }
.form--sent .tick { width: 60px; height: 60px; border-radius: 50%; background: linear-gradient(135deg,var(--gold),var(--gold-2)); color: var(--ink); display: grid; place-items: center; font-size: 1.8rem; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer { background: var(--paper); border-top: 1px solid var(--line); }
.footer__inner { max-width: var(--maxw); margin: 0 auto; padding: clamp(3rem,5vw,4.5rem) var(--pad) 2rem; display: grid; grid-template-columns: 1.4fr 2fr; gap: 3rem; }
.brand--foot { margin-bottom: 1rem; }
.footer__brand p { color: var(--ink-70); font-size: 0.92rem; max-width: 22rem; }
.footer__nav { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.footer__nav h4 { font-family: var(--sans); font-size: 0.76rem; text-transform: uppercase; letter-spacing: 0.14em; color: var(--teal); margin-bottom: 1rem; font-weight: 600; }
.footer__nav a { display: block; font-size: 0.9rem; color: var(--ink-70); padding: 0.35rem 0; transition: color 0.2s, padding-left 0.2s; }
.footer__nav a:hover { color: var(--ink); padding-left: 4px; }
.footer__bar { max-width: var(--maxw); margin: 0 auto; padding: 1.5rem var(--pad); border-top: 1px solid var(--line); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem; font-size: 0.82rem; color: var(--ink-55); }
.footer__legal a:hover { color: var(--ink); }
.sources { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--pad) 2.5rem; }
.sources p { font-size: 0.74rem; color: var(--ink-55); line-height: 1.7; max-width: 60rem; }
.sources strong { color: var(--ink-70); }

/* ============================================================
   REVEAL animation
   ============================================================ */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 960px) {
  .hero__inner { grid-template-columns: 1fr; }
  .demo { max-width: 420px; margin: 0 auto; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .cards { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .results__inner { grid-template-columns: 1fr; }
  .calc__panel { grid-template-columns: 1fr; }
  .evidence { grid-template-columns: 1fr; }
  .why__grid { grid-template-columns: repeat(2, 1fr); }
  .book__inner { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr; gap: 2rem; }
}

@media (max-width: 640px) {
  .nav__links { display: none; }
  .nav.open .nav__links {
    display: flex; flex-direction: column; position: absolute; top: 100%; left: 0; right: 0;
    background: var(--paper); padding: 1.2rem var(--pad); gap: 1.1rem; box-shadow: 0 20px 40px -20px rgba(10,31,28,0.3); border-top: 1px solid var(--line);
  }
  .nav__cta { display: none; }
  .nav__burger { display: block; }
  .stats { grid-template-columns: 1fr; }
  .roi { grid-template-columns: 1fr; }
  .why__grid { grid-template-columns: 1fr; }
  .field--split { grid-template-columns: 1fr; }
  .footer__nav { grid-template-columns: 1fr 1fr; }
  .hero__title { font-size: clamp(2.4rem, 10vw, 3.2rem); }
}

/* reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.1ms !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}