/* ────────────────────────────────────────────────────────────
   Interstitial — marketing site
   Design philosophy: quiet luxury, content-dense, structured,
   purposeful motion, subtle depth.
   ──────────────────────────────────────────────────────────── */

:root {
  /* Core palette — warm, paper-like, never pure black/white */
  --paper:        #FAF8F4;
  --paper-deep:   #F4F0E8;
  --paper-soft:   #F7F3EC;
  --surface:      #FFFFFF;
  --surface-warm: #FDFBF6;

  /* Text — brown-black family */
  --ink:          #1C1A17;
  --ink-soft:     #6B6660;
  --ink-quiet:    #A8A39C;

  /* Accent — single restrained color */
  --accent:       #3A5A40;
  --accent-hover: #2D4630;
  --accent-soft:  #E8EEE7;
  --accent-glow:  rgba(58, 90, 64, 0.18);

  /* Structure */
  --divider:      #EDE9E2;
  --divider-soft: #F2EEE6;

  /* Depth (layered shadows) */
  --shadow-xs:    0 1px 2px rgba(28, 26, 23, 0.04);
  --shadow-sm:    0 1px 2px rgba(28, 26, 23, 0.04), 0 2px 4px rgba(28, 26, 23, 0.03);
  --shadow-md:    0 1px 3px rgba(28, 26, 23, 0.05), 0 8px 24px rgba(28, 26, 23, 0.06);
  --shadow-lg:    0 2px 6px rgba(28, 26, 23, 0.06), 0 20px 50px rgba(28, 26, 23, 0.10);
  --shadow-xl:    0 4px 8px rgba(28, 26, 23, 0.08), 0 30px 80px rgba(28, 26, 23, 0.14);

  /* Dark mode panel for contrast sections */
  --dark-bg:      #141310;
  --dark-bg-2:    #1D1B16;
  --dark-ink:     #F5F1E8;
  --dark-ink-soft:#968F83;
  --dark-divider: #29261F;

  /* Typography */
  --font-sans:    'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-serif:   'Source Serif 4', Georgia, serif;
  --font-mono:    'JetBrains Mono', 'SF Mono', Consolas, monospace;

  /* Motion */
  --ease:         cubic-bezier(0.2, 0.0, 0.0, 1.0);
  --ease-out:     cubic-bezier(0.16, 1, 0.3, 1);

  /* Layout */
  --container:    1120px;
  --container-sm: 760px;
  --gutter:       32px;
  --gutter-sm:    20px;
}

/* ───── Reset ───── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }
html, body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; background: none; border: none; color: inherit; }
img, svg { display: block; max-width: 100%; }

/* ───── Typography helpers ───── */
.serif      { font-family: var(--font-serif); font-style: italic; font-weight: 400; }
.mono       { font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.08em; font-size: 11px; }
.mono-lg    { font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.08em; font-size: 13px; }
.muted      { color: var(--ink-soft); }
.quiet      { color: var(--ink-quiet); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink-quiet);
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 18px;
}
.eyebrow::before {
  content: '';
  width: 18px;
  height: 1px;
  background: currentColor;
}

/* ───── Container helpers ───── */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.container-sm {
  max-width: var(--container-sm);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ───── Scroll-reveal ───── */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 700ms var(--ease-out), transform 700ms var(--ease-out);
}
.reveal.visible {
  opacity: 1;
  transform: none;
}
.reveal[data-delay="1"] { transition-delay: 80ms; }
.reveal[data-delay="2"] { transition-delay: 160ms; }
.reveal[data-delay="3"] { transition-delay: 240ms; }
.reveal[data-delay="4"] { transition-delay: 320ms; }
.reveal[data-delay="5"] { transition-delay: 400ms; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal, .reveal.visible { opacity: 1; transform: none; transition: none; }
  * { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

/* ────────────────────────────────────────────────────────────
   HEADER — sticky, subtle blur on scroll
   ──────────────────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 20px 0;
  transition: background-color 300ms var(--ease), border-color 300ms var(--ease), backdrop-filter 300ms var(--ease);
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(250, 248, 244, 0.82);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom-color: var(--divider-soft);
}
.site-header .inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 22px;
  letter-spacing: -0.015em;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: opacity 200ms var(--ease);
}
.brand:hover { opacity: 0.72; }
.brand .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
  box-shadow: 0 0 0 4px var(--accent-soft);
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 32px;
  font-size: 14px;
  color: var(--ink-soft);
}
.site-nav a {
  transition: color 160ms var(--ease);
  position: relative;
}
.site-nav a:not(.btn)::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -4px;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 300ms var(--ease);
}
.site-nav a:not(.btn):hover {
  color: var(--ink);
}
.site-nav a:not(.btn):hover::after {
  transform: scaleX(1);
  transform-origin: left;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  transition: transform 200ms var(--ease), background-color 200ms var(--ease), box-shadow 200ms var(--ease), color 200ms var(--ease);
  white-space: nowrap;
}
.btn.primary {
  background: var(--accent);
  color: #FFFFFF;
  box-shadow: 0 1px 2px rgba(28,26,23,0.05), 0 4px 14px rgba(58,90,64,0.22);
}
.btn.primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 2px 4px rgba(28,26,23,0.08), 0 10px 26px rgba(58,90,64,0.30);
}
.btn.primary:active { transform: translateY(0); }
.btn.ghost {
  color: var(--ink-soft);
  border: 1px solid var(--divider);
}
.btn.ghost:hover {
  background: var(--surface);
  color: var(--ink);
  border-color: var(--ink-quiet);
}
.btn .arrow {
  transition: transform 250ms var(--ease);
  display: inline-block;
}
.btn:hover .arrow { transform: translateX(3px); }

/* ────────────────────────────────────────────────────────────
   HERO — asymmetric, layered, content-dense
   ──────────────────────────────────────────────────────────── */
.hero {
  position: relative;
  padding: 72px 0 96px;
  overflow: hidden;
}
.hero::before {
  /* very soft diagonal gradient — barely visible */
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 1200px 600px at 85% 25%, rgba(58,90,64,0.05), transparent 60%),
    radial-gradient(ellipse 800px 400px at 10% 80%, rgba(168,163,156,0.10), transparent 60%);
  pointer-events: none;
}
.hero .grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 72px;
  align-items: center;
}
.hero-copy h1 {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(40px, 5.2vw, 68px);
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--ink);
  margin-bottom: 24px;
}
.hero-copy h1 .accent {
  color: var(--accent);
  position: relative;
}
.hero-copy h1 .accent::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: 3px;
  height: 10px;
  background: var(--accent-soft);
  z-index: -1;
  border-radius: 2px;
}
.hero-copy p.lead {
  font-size: 19px;
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: 540px;
  margin-bottom: 36px;
}
.hero-cta {
  display: flex;
  gap: 14px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.cta-note {
  font-size: 13px;
  color: var(--ink-quiet);
}
.hero-meta {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
  padding-top: 28px;
  border-top: 1px solid var(--divider);
}
.hero-meta .item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.hero-meta .num {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 28px;
  color: var(--ink);
  line-height: 1;
}
.hero-meta .label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-quiet);
}

/* ───── Hero visual (fake phone mockup) ───── */
.hero-visual {
  position: relative;
  justify-self: end;
  width: 100%;
  max-width: 420px;
  aspect-ratio: 9 / 16;
  perspective: 1200px;
}
.phone {
  position: absolute;
  inset: 0;
  border-radius: 44px;
  background: linear-gradient(160deg, var(--surface) 0%, var(--surface-warm) 100%);
  box-shadow:
    0 2px 4px rgba(28,26,23,0.04),
    0 8px 24px rgba(28,26,23,0.08),
    0 40px 80px rgba(28,26,23,0.12),
    0 60px 120px rgba(28,26,23,0.10);
  border: 1px solid var(--divider);
  padding: 28px 22px 22px;
  display: flex;
  flex-direction: column;
  transform: rotate(-2deg);
  transition: transform 500ms var(--ease);
}
.hero-visual:hover .phone { transform: rotate(-1deg) translateY(-4px); }

.phone-header {
  display: flex;
  justify-content: flex-end;
  color: var(--ink-quiet);
  font-size: 16px;
  margin-bottom: 14px;
}
.phone .date {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 22px;
  color: var(--ink);
  margin-bottom: 4px;
}
.phone .elapsed {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-quiet);
  margin-bottom: 18px;
}
.phone .entry {
  padding: 10px 0;
  border-bottom: 1px solid var(--divider-soft);
}
.phone .entry .time {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-quiet);
  margin-bottom: 3px;
}
.phone .entry .text { font-size: 13px; color: var(--ink); }
.phone .entry.vague .text { font-style: italic; color: var(--ink-soft); }
.phone .substep {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 0 5px 16px;
  font-size: 12px;
  color: var(--ink-soft);
}
.phone .substep .box {
  width: 12px; height: 12px;
  border-radius: 3px;
  border: 1.5px solid var(--ink-quiet);
  flex-shrink: 0;
}
.phone .substep.done .box {
  background: var(--accent);
  border-color: var(--accent);
}
.phone .substep.done .text { text-decoration: line-through; opacity: 0.7; }
.phone .input {
  margin-top: auto;
  padding: 12px 14px;
  border: 1px solid var(--divider);
  border-radius: 12px;
  font-size: 12px;
  color: var(--ink-quiet);
  background: var(--surface-warm);
}

/* Floating badges around the phone */
.badge-float {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--surface);
  border: 1px solid var(--divider);
  border-radius: 999px;
  padding: 10px 16px;
  box-shadow: var(--shadow-md);
  font-size: 12px;
  font-weight: 500;
  color: var(--ink);
  animation: float 6s ease-in-out infinite;
}
.badge-float .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.badge-float.top-right {
  top: -12px;
  right: -32px;
  animation-delay: 0s;
}
.badge-float.bottom-left {
  bottom: 32px;
  left: -52px;
  animation-delay: 2s;
}
.badge-float.middle-right {
  top: 42%;
  right: -64px;
  animation-delay: 4s;
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

/* ────────────────────────────────────────────────────────────
   PREMISE — quote + offset asymmetric text
   ──────────────────────────────────────────────────────────── */
.premise {
  position: relative;
  padding: 80px 0;
  background: var(--paper-deep);
  border-top: 1px solid var(--divider);
  border-bottom: 1px solid var(--divider);
}
.premise .layout {
  display: grid;
  grid-template-columns: 5fr 6fr;
  gap: 56px;
  align-items: flex-start;
}
.premise .quote {
  position: sticky;
  top: 120px;
  padding: 32px;
  background: var(--surface);
  border-radius: 20px;
  border: 1px solid var(--divider);
  box-shadow: var(--shadow-md);
  transform: rotate(-0.5deg);
}
.premise .quote::before {
  content: '"';
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 90px;
  line-height: 0.8;
  color: var(--accent);
  opacity: 0.35;
  position: absolute;
  top: 12px;
  left: 20px;
}
.premise .quote p {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 22px;
  line-height: 1.4;
  color: var(--ink);
  position: relative;
  padding-top: 40px;
}
.premise .quote .attribution {
  margin-top: 20px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-quiet);
  font-style: normal;
}
.premise .essay h2 {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(28px, 3vw, 40px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 24px;
}
.premise .essay p {
  color: var(--ink-soft);
  font-size: 17px;
  line-height: 1.65;
  margin-bottom: 18px;
}
.premise .essay p strong {
  color: var(--ink);
  font-weight: 500;
}

/* ────────────────────────────────────────────────────────────
   HOW IT WORKS — tabs
   ──────────────────────────────────────────────────────────── */
.how {
  padding: 96px 0;
}
.how-header {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  align-items: flex-end;
  margin-bottom: 48px;
}
.how-header h2 {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(34px, 4.4vw, 54px);
  line-height: 1.05;
  letter-spacing: -0.025em;
  max-width: 720px;
}
.how-header .tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-quiet);
  padding: 6px 12px;
  border: 1px solid var(--divider);
  border-radius: 999px;
  white-space: nowrap;
}

.tabs {
  display: flex;
  gap: 6px;
  padding: 6px;
  background: var(--paper-deep);
  border: 1px solid var(--divider);
  border-radius: 14px;
  margin-bottom: 32px;
  overflow-x: auto;
  scrollbar-width: none;
}
.tabs::-webkit-scrollbar { display: none; }
.tab-btn {
  padding: 12px 20px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-soft);
  white-space: nowrap;
  transition: background 250ms var(--ease), color 250ms var(--ease), transform 200ms var(--ease);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.tab-btn .idx {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink-quiet);
  padding: 2px 6px;
  background: rgba(255,255,255,0.5);
  border-radius: 4px;
  transition: background 200ms var(--ease), color 200ms var(--ease);
}
.tab-btn:hover {
  color: var(--ink);
}
.tab-btn.active {
  background: var(--surface);
  color: var(--ink);
  box-shadow: var(--shadow-sm);
}
.tab-btn.active .idx {
  background: var(--accent-soft);
  color: var(--accent);
}

.tab-panels {
  position: relative;
  min-height: 440px;
}
.tab-panel {
  display: none;
  opacity: 0;
  animation: fade-up 500ms var(--ease-out) forwards;
}
.tab-panel.active { display: grid; }
@keyframes fade-up {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}
.tab-panel {
  grid-template-columns: 1fr 1.15fr;
  gap: 56px;
  align-items: center;
  padding: 32px;
  background: var(--surface-warm);
  border-radius: 20px;
  border: 1px solid var(--divider);
  box-shadow: var(--shadow-md);
}
.tab-panel .text .mono {
  color: var(--accent);
  margin-bottom: 12px;
  display: block;
}
.tab-panel .text h3 {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 34px;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.tab-panel .text p {
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.65;
  margin-bottom: 14px;
}
.tab-panel .text ul {
  list-style: none;
  margin-top: 20px;
}
.tab-panel .text li {
  padding: 10px 0;
  border-top: 1px solid var(--divider-soft);
  display: flex;
  gap: 12px;
  align-items: flex-start;
  color: var(--ink-soft);
  font-size: 14px;
}
.tab-panel .text li::before {
  content: '';
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
  margin-top: 10px;
  flex-shrink: 0;
}

.tab-panel .demo {
  position: relative;
  background: var(--paper);
  border-radius: 14px;
  padding: 24px;
  border: 1px solid var(--divider);
  box-shadow: var(--shadow-xs);
  min-height: 340px;
}
.tab-panel .demo-label {
  position: absolute;
  top: 14px;
  right: 18px;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  color: var(--ink-quiet);
}

/* Demo: vagueness */
.demo-flow .prompt {
  font-size: 12px;
  color: var(--ink-quiet);
  margin-bottom: 4px;
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.demo-flow .bubble {
  background: var(--surface);
  border: 1px solid var(--divider);
  border-radius: 12px;
  padding: 14px 18px;
  font-size: 15px;
  margin-bottom: 10px;
  box-shadow: var(--shadow-xs);
}
.demo-flow .bubble.vague {
  font-style: italic;
  color: var(--ink-soft);
}
.demo-flow .arrow {
  text-align: center;
  color: var(--ink-quiet);
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 14px;
  padding: 6px 0;
}
.demo-flow .substep-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--surface);
  border: 1px solid var(--divider);
  border-radius: 10px;
  margin-bottom: 6px;
  font-size: 14px;
  color: var(--ink);
}
.demo-flow .check {
  width: 16px; height: 16px;
  border-radius: 4px;
  border: 1.5px solid var(--accent);
  flex-shrink: 0;
}
.demo-flow .check.done {
  background: var(--accent);
}

/* Demo: stuck flow */
.demo-stuck h4 {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 24px;
  margin-bottom: 14px;
  color: var(--ink);
}
.demo-stuck .user-line {
  font-style: italic;
  color: var(--ink-soft);
  padding: 14px 16px;
  background: var(--surface);
  border-radius: 10px;
  border: 1px solid var(--divider);
  margin-bottom: 14px;
}
.demo-stuck .guide {
  color: var(--ink-soft);
  font-size: 13px;
  margin-bottom: 6px;
}
.demo-stuck .suggestion {
  padding: 18px;
  background: var(--accent-soft);
  border: 1px solid rgba(58,90,64,0.15);
  border-radius: 10px;
  color: var(--ink);
  font-size: 16px;
  margin-bottom: 16px;
}
.demo-stuck .btns { display: flex; gap: 8px; }
.demo-stuck .pill {
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 12px;
  border: 1px solid var(--divider);
  color: var(--ink-soft);
}
.demo-stuck .pill.solid { background: var(--accent); color: white; border-color: var(--accent); }

/* Demo: patterns */
.demo-pattern {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.demo-pattern .obs-card {
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--divider);
  border-radius: 12px;
  position: relative;
}
.demo-pattern .obs-card .period {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-quiet);
  margin-bottom: 8px;
}
.demo-pattern .obs-card p {
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.5;
  color: var(--ink);
}
.demo-pattern .obs-card.new::after {
  content: '';
  position: absolute;
  top: 16px; right: 16px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

/* Demo: privacy (code block) */
.demo-privacy {
  padding: 0;
  background: var(--dark-bg);
  border: 1px solid var(--dark-divider);
}
.demo-privacy .titlebar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--dark-divider);
}
.demo-privacy .titlebar .dots { display: flex; gap: 6px; }
.demo-privacy .titlebar .dots span {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--dark-divider);
}
.demo-privacy .titlebar .fn {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--dark-ink-soft);
  margin-left: 6px;
}
.demo-privacy pre {
  padding: 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.75;
  color: var(--dark-ink);
  overflow-x: auto;
}
.demo-privacy .comment { color: var(--dark-ink-soft); }
.demo-privacy .kw      { color: #9BB8A1; }
.demo-privacy .fn-name { color: #D7C896; }
.demo-privacy .str     { color: #E8D4B0; }
.demo-privacy .num     { color: #CAA97F; }

/* ────────────────────────────────────────────────────────────
   PRINCIPLES — card grid with subtle asymmetry
   ──────────────────────────────────────────────────────────── */
.principles {
  padding: 96px 0 104px;
  background: var(--paper-soft);
  border-top: 1px solid var(--divider);
  border-bottom: 1px solid var(--divider);
  position: relative;
}
.principles::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 600px 300px at 20% 0%, rgba(58,90,64,0.04), transparent 70%),
    radial-gradient(ellipse 600px 300px at 80% 100%, rgba(58,90,64,0.04), transparent 70%);
  pointer-events: none;
}
.principles .container { position: relative; }
.principles-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: flex-end;
  margin-bottom: 56px;
}
.principles-header h2 {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(34px, 4.4vw, 54px);
  line-height: 1.05;
  letter-spacing: -0.025em;
}
.principles-header p {
  color: var(--ink-soft);
  font-size: 17px;
  line-height: 1.6;
  max-width: 440px;
  justify-self: end;
}

.principles-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
}
.p-card {
  grid-column: span 2;
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--divider);
  border-radius: 18px;
  transition: transform 350ms var(--ease), box-shadow 350ms var(--ease), border-color 250ms var(--ease);
  position: relative;
  overflow: hidden;
}
.p-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(58,90,64,0.25);
}
.p-card .num {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 48px;
  color: var(--accent);
  opacity: 0.28;
  line-height: 1;
  margin-bottom: 14px;
  transition: opacity 350ms var(--ease), transform 350ms var(--ease);
}
.p-card:hover .num { opacity: 0.5; transform: translateX(-2px); }
.p-card h3 {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 22px;
  line-height: 1.2;
  margin-bottom: 10px;
  color: var(--ink);
}
.p-card p {
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.6;
}
.p-card.wide { grid-column: span 3; }
.p-card.narrow { grid-column: span 2; }
.p-card.feature {
  grid-column: span 4;
  background: linear-gradient(135deg, var(--surface) 0%, var(--accent-soft) 100%);
  border-color: rgba(58,90,64,0.2);
}
.p-card.feature h3 { font-size: 28px; }
.p-card.feature .num { color: var(--accent); opacity: 0.4; font-size: 64px; }

/* ────────────────────────────────────────────────────────────
   ENCRYPTION — dark contrast section
   ──────────────────────────────────────────────────────────── */
.encryption {
  padding: 112px 0;
  background: var(--dark-bg);
  color: var(--dark-ink);
  position: relative;
  overflow: hidden;
}
.encryption::before {
  content: '';
  position: absolute;
  top: -40%; left: -20%;
  width: 60%;
  height: 140%;
  background: radial-gradient(ellipse at center, rgba(58,90,64,0.2), transparent 65%);
  pointer-events: none;
  filter: blur(20px);
}
.encryption::after {
  content: '';
  position: absolute;
  bottom: -40%; right: -10%;
  width: 50%;
  height: 120%;
  background: radial-gradient(ellipse at center, rgba(58,90,64,0.12), transparent 70%);
  pointer-events: none;
  filter: blur(20px);
}
.encryption .container { position: relative; }
.encryption .layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 64px;
  align-items: center;
}
.encryption .eyebrow { color: rgba(155, 184, 161, 0.85); }
.encryption .eyebrow::before { background: rgba(155, 184, 161, 0.85); }
.encryption h2 {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(36px, 4.6vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--dark-ink);
  margin-bottom: 24px;
}
.encryption p {
  color: var(--dark-ink-soft);
  font-size: 17px;
  line-height: 1.7;
  margin-bottom: 16px;
  max-width: 520px;
}
.encryption .stack-list {
  margin-top: 32px;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--dark-divider);
}
.encryption .stack-list li {
  padding: 16px 0;
  border-bottom: 1px solid var(--dark-divider);
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 20px;
  align-items: baseline;
}
.encryption .stack-list .k {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(155, 184, 161, 0.75);
}
.encryption .stack-list .v {
  color: var(--dark-ink);
  font-size: 14px;
}
.encryption .code-card {
  position: relative;
  background: var(--dark-bg-2);
  border: 1px solid var(--dark-divider);
  border-radius: 20px;
  box-shadow:
    0 2px 4px rgba(0,0,0,0.2),
    0 20px 60px rgba(0,0,0,0.4);
  overflow: hidden;
  transform: rotate(0.8deg);
  transition: transform 500ms var(--ease);
}
.encryption .code-card:hover { transform: rotate(0deg) translateY(-4px); }
.encryption .code-card .titlebar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--dark-divider);
  background: rgba(255,255,255,0.02);
}
.encryption .code-card .dots { display: flex; gap: 6px; }
.encryption .code-card .dots span {
  width: 11px; height: 11px; border-radius: 50%;
  background: var(--dark-divider);
}
.encryption .code-card .filename {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--dark-ink-soft);
  margin-left: 8px;
}
.encryption .code-card pre {
  padding: 24px 26px 28px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.8;
  color: var(--dark-ink);
  overflow-x: auto;
}
.encryption .code-card .comment { color: rgba(155, 184, 161, 0.6); font-style: italic; }
.encryption .code-card .kw      { color: #9BB8A1; }
.encryption .code-card .fn-name { color: #E8D4B0; }
.encryption .code-card .str     { color: #CAA97F; }
.encryption .code-card .var     { color: #D9D1BF; }
.encryption .floating-badge {
  position: absolute;
  padding: 12px 16px;
  background: var(--dark-bg-2);
  border: 1px solid var(--dark-divider);
  border-radius: 12px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.35);
  font-size: 12px;
  color: var(--dark-ink);
  animation: float 6s ease-in-out infinite;
}
.floating-badge .icon {
  width: 28px; height: 28px;
  border-radius: 8px;
  background: rgba(58,90,64,0.22);
  border: 1px solid rgba(155, 184, 161, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #9BB8A1;
  font-family: var(--font-mono);
  font-size: 11px;
}
.floating-badge.top { top: -16px; right: 48px; animation-delay: 1s; }
.floating-badge.bottom { bottom: -16px; left: 32px; animation-delay: 3s; }

/* ────────────────────────────────────────────────────────────
   PRICING — single card on a soft gradient
   ──────────────────────────────────────────────────────────── */
.pricing {
  padding: 104px 0;
  background: var(--paper-deep);
  position: relative;
  overflow: hidden;
}
.pricing::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 800px 400px at 50% 0%, rgba(58,90,64,0.08), transparent 60%),
    radial-gradient(ellipse 600px 300px at 30% 100%, rgba(168,163,156,0.15), transparent 60%);
  pointer-events: none;
}
.pricing .container { position: relative; }
.pricing-header {
  text-align: center;
  margin-bottom: 48px;
}
.pricing-header .eyebrow { margin-left: auto; margin-right: auto; }
.pricing-header h2 {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(34px, 4.4vw, 54px);
  line-height: 1.05;
  letter-spacing: -0.025em;
  margin-bottom: 12px;
}
.pricing-header p {
  color: var(--ink-soft);
  max-width: 520px;
  margin: 0 auto;
}
.pricing-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 28px;
  max-width: 960px;
  margin: 0 auto;
}
.price-card {
  padding: 40px 36px;
  background: var(--surface);
  border: 1px solid var(--divider);
  border-radius: 24px;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}
.price-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}
.price-card .plan {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}
.price-card .price {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 4px;
}
.price-card .amount {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 64px;
  line-height: 1;
  color: var(--ink);
}
.price-card .period {
  color: var(--ink-quiet);
  font-size: 16px;
}
.price-card .yearly {
  color: var(--ink-soft);
  font-size: 14px;
  margin-bottom: 28px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--divider);
}
.price-card .yearly strong { color: var(--accent); font-weight: 600; }
.price-card ul {
  list-style: none;
  margin-bottom: 32px;
}
.price-card li {
  padding: 11px 0;
  color: var(--ink-soft);
  font-size: 15px;
  display: flex;
  gap: 12px;
  align-items: center;
}
.price-card li::before {
  content: '';
  width: 16px; height: 16px;
  background: var(--accent-soft);
  border-radius: 50%;
  position: relative;
  flex-shrink: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 10 10'%3E%3Cpath fill='none' stroke='%233A5A40' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round' d='M2 5l2 2 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
}
.price-card .primary { width: 100%; justify-content: center; }

.pricing-side {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.side-card {
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--divider);
  border-radius: 18px;
  transition: transform 300ms var(--ease), box-shadow 300ms var(--ease);
}
.side-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.side-card .mono { color: var(--accent); margin-bottom: 8px; display: block; }
.side-card h4 {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 20px;
  margin-bottom: 6px;
}
.side-card p {
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.55;
}

/* ────────────────────────────────────────────────────────────
   FAQ — accordions
   ──────────────────────────────────────────────────────────── */
.faq {
  padding: 104px 0;
}
.faq-header {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 64px;
  margin-bottom: 48px;
  align-items: flex-end;
}
.faq-header h2 {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(34px, 4.4vw, 54px);
  line-height: 1.05;
  letter-spacing: -0.025em;
  max-width: 460px;
}
.faq-header .support {
  justify-self: end;
  padding: 18px 22px;
  background: var(--surface);
  border: 1px solid var(--divider);
  border-radius: 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 260px;
}
.faq-header .support .label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-quiet);
}
.faq-header .support a {
  color: var(--ink);
  font-size: 14px;
  transition: color 200ms var(--ease);
}
.faq-header .support a:hover { color: var(--accent); }

.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 40px;
}
.faq-item {
  padding: 22px 0;
  border-bottom: 1px solid var(--divider);
  cursor: pointer;
  list-style: none;
}
.faq-item:hover summary .q { color: var(--accent); }
.faq-item summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  position: relative;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item .q {
  font-size: 16px;
  font-weight: 500;
  color: var(--ink);
  transition: color 200ms var(--ease);
}
.faq-item .plus {
  flex-shrink: 0;
  width: 28px; height: 28px;
  border-radius: 50%;
  border: 1px solid var(--divider);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-soft);
  font-size: 16px;
  transition: background 300ms var(--ease), color 300ms var(--ease), transform 300ms var(--ease);
}
.faq-item[open] .plus {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
  transform: rotate(45deg);
}
.faq-item .answer {
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.65;
  padding-top: 16px;
  padding-right: 40px;
}
.faq-item .answer a { color: var(--accent); border-bottom: 1px solid var(--accent-soft); }
.faq-item .answer a:hover { border-bottom-color: var(--accent); }

/* ────────────────────────────────────────────────────────────
   CTA strip — tight, centered
   ──────────────────────────────────────────────────────────── */
.cta-strip {
  padding: 88px 0 104px;
  background: var(--paper-deep);
  border-top: 1px solid var(--divider);
  position: relative;
  overflow: hidden;
}
.cta-strip::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 900px 400px at 50% 50%, rgba(58,90,64,0.08), transparent 60%);
  pointer-events: none;
}
.cta-strip .inner {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}
.cta-strip h2 {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(32px, 4.2vw, 52px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.cta-strip p {
  color: var(--ink-soft);
  font-size: 17px;
  margin-bottom: 28px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}
.cta-strip .btn-row {
  display: inline-flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

/* ────────────────────────────────────────────────────────────
   FOOTER — tight, structured
   ──────────────────────────────────────────────────────────── */
.site-footer {
  padding: 56px 0 40px;
  background: var(--paper);
  border-top: 1px solid var(--divider);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-grid .col-brand p {
  color: var(--ink-soft);
  font-size: 14px;
  max-width: 320px;
  margin-top: 12px;
  line-height: 1.6;
}
.footer-grid h5 {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-quiet);
  margin-bottom: 14px;
}
.footer-grid ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-grid a {
  color: var(--ink-soft);
  font-size: 14px;
  transition: color 160ms var(--ease);
}
.footer-grid a:hover { color: var(--accent); }
.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--divider);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-bottom .copy {
  font-size: 12px;
  color: var(--ink-quiet);
}
.footer-bottom .stamp {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-quiet);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.footer-bottom .stamp .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #4CAF50;
  box-shadow: 0 0 0 3px rgba(76,175,80,0.15);
}

/* ────────────────────────────────────────────────────────────
   DOC pages (privacy, terms) — unchanged overall structure
   ──────────────────────────────────────────────────────────── */
.doc {
  padding: 72px 0 96px;
  max-width: 760px;
  margin: 0 auto;
}
.doc h1 {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(36px, 4.5vw, 48px);
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 10px;
}
.doc .updated {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-quiet);
  margin-bottom: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--divider);
}
.doc h2 {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 26px;
  letter-spacing: -0.01em;
  margin: 48px 0 16px;
  color: var(--ink);
}
.doc p {
  color: var(--ink-soft);
  line-height: 1.75;
  margin-bottom: 16px;
  font-size: 16px;
}
.doc ul {
  list-style: none;
  margin: 16px 0 24px;
  padding-left: 0;
}
.doc ul li {
  color: var(--ink-soft);
  padding: 8px 0 8px 24px;
  position: relative;
  font-size: 15px;
  line-height: 1.6;
}
.doc ul li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* ────────────────────────────────────────────────────────────
   Responsive breakpoints
   ──────────────────────────────────────────────────────────── */
@media (max-width: 960px) {
  :root { --gutter: 24px; }
  .hero { padding: 56px 0 72px; }
  .hero .grid { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { justify-self: center; max-width: 340px; }
  .badge-float.bottom-left { left: -20px; }
  .badge-float.middle-right { right: -20px; }
  .premise .layout { grid-template-columns: 1fr; gap: 36px; }
  .premise .quote { position: static; }
  .how-header, .principles-header, .faq-header { grid-template-columns: 1fr; gap: 24px; }
  .how-header .tag, .faq-header .support { justify-self: flex-start; }
  .tab-panel { grid-template-columns: 1fr; gap: 32px; padding: 24px; }
  .principles-grid { grid-template-columns: 1fr 1fr; }
  .p-card, .p-card.wide, .p-card.narrow, .p-card.feature { grid-column: span 1; }
  .encryption .layout { grid-template-columns: 1fr; gap: 48px; }
  .pricing-grid { grid-template-columns: 1fr; }
  .faq-grid { grid-template-columns: 1fr; gap: 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-grid .col-brand { grid-column: span 2; }
}

@media (max-width: 620px) {
  .site-nav { gap: 20px; }
  .site-nav a:not(.btn):not(.brand) { display: none; }
  .hero-meta { gap: 24px; }
  .hero-meta .num { font-size: 24px; }
  .principles-grid { grid-template-columns: 1fr; }
  .encryption .code-card pre { font-size: 11px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-grid .col-brand { grid-column: span 1; }
}