/* MIMOA — marketing site */

:root {
  /* Palette — indigo dye + persimmon */
  --paper: #F2EDE0;        /* warm rice-paper cream — bg */
  --surface: #F9F5EA;      /* lighter cream — cards */
  --ink: #1E2A3A;          /* deep indigo-near-black — primary text */
  --ink2: #4A5468;         /* muted blue-gray — secondary */
  --ink3: #8B92A0;         /* soft slate — tertiary */
  --persimmon: #D96B45;    /* brand accent */
  --rust: #A8462A;         /* hover/active */
  --celadon: #7B9989;      /* success */
  --hairline: rgba(30, 42, 58, 0.10);
  --hairline-strong: rgba(30, 42, 58, 0.18);

  /* Tone colors */
  --tone-1: #C9954A;       /* flat — ochre */
  --tone-2: #7B9989;       /* rising — celadon */
  --tone-3: #5D7AA8;       /* dip — indigo-blue */
  --tone-4: #D96B45;       /* falling — persimmon */

  /* Type */
  --serif: 'Fraunces', 'Iowan Old Style', 'Charter', 'Georgia', serif;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --hanzi: 'Noto Sans SC', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;

  --max: 1100px;
  --gutter: 28px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

::selection { background: rgba(217, 107, 69, 0.22); color: var(--ink); }

a { color: inherit; text-decoration: none; }

/* Subtle paper texture using a noisy SVG — kept very faint */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.4;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.12  0 0 0 0 0.16  0 0 0 0 0.22  0 0 0 0.06 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}

#app { position: relative; z-index: 1; }

/* Typography */
.serif { font-family: var(--serif); font-weight: 400; }
.sans  { font-family: var(--sans); }
.hanzi { font-family: var(--hanzi); }

h1, h2, h3, h4 { font-family: var(--serif); font-weight: 400; letter-spacing: -0.01em; color: var(--ink); }

.display-1 { font-family: var(--serif); font-size: clamp(40px, 5.4vw, 64px); line-height: 1.06; letter-spacing: -0.5px; font-weight: 350; }
.display-2 { font-family: var(--serif); font-size: clamp(32px, 4vw, 48px); line-height: 1.1; letter-spacing: -0.4px; font-weight: 400; }
.display-3 { font-family: var(--serif); font-size: clamp(26px, 2.8vw, 34px); line-height: 1.2; letter-spacing: -0.2px; font-weight: 400; }

.it-persimmon { font-style: italic; color: var(--persimmon); font-feature-settings: "ss01"; }

.smallcaps {
  font-family: var(--sans);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 11px;
  font-weight: 500;
  color: var(--ink3);
}

.body-lg { font-size: 19px; line-height: 1.55; color: var(--ink2); }
.body { font-size: 17px; line-height: 1.65; color: var(--ink2); }
.body-sm { font-size: 14.5px; line-height: 1.6; color: var(--ink2); }
.caption { font-family: var(--serif); font-style: italic; color: var(--ink3); font-size: 15px; }

/* Layout */
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }
.section { padding: 120px 0; position: relative; }
.section-sm { padding: 80px 0; }

.hairline-top    { border-top: 1px solid var(--hairline); }
.hairline-bottom { border-bottom: 1px solid var(--hairline); }

/* ───── Nav ───── */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(242, 237, 224, 0.78);
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  border-bottom: 1px solid var(--hairline);
}
.nav-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 18px var(--gutter);
  display: flex; align-items: center; justify-content: space-between;
}
.brand {
  display: flex; align-items: center; gap: 18px;
}
.wordmark {
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--ink);
}
.nav-link {
  font-family: var(--sans);
  font-size: 14.5px;
  color: var(--ink2);
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--hairline);
  transition: all 160ms ease;
  cursor: pointer;
}
.nav-link:hover { color: var(--ink); border-color: var(--hairline-strong); background: var(--surface); }

/* ───── Buttons & inputs ───── */
.btn {
  font-family: var(--sans);
  font-weight: 500;
  font-size: 15px;
  padding: 13px 22px;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 160ms ease;
  letter-spacing: 0.01em;
  white-space: nowrap;
}
.btn-primary {
  background: var(--persimmon);
  color: #FBF8F1;
  border-color: var(--persimmon);
}
.btn-primary:hover { background: var(--rust); border-color: var(--rust); }

.input {
  font-family: var(--sans);
  font-size: 15px;
  padding: 13px 16px;
  border-radius: 8px;
  border: 1px solid var(--hairline-strong);
  background: var(--surface);
  color: var(--ink);
  width: 100%;
  outline: none;
  transition: border-color 160ms ease, background 160ms ease;
}
.input::placeholder { color: var(--ink3); }
.input:focus { border-color: var(--persimmon); background: #FCFAF3; }

.waitlist-form {
  display: flex; gap: 10px; align-items: stretch;
  max-width: 460px;
}
.waitlist-form .input { flex: 1; }

.waitlist-form.lg .input,
.waitlist-form.lg .btn { padding: 17px 22px; font-size: 16px; }
.waitlist-form.lg { max-width: 540px; margin: 0 auto; }

.success-line {
  font-family: var(--serif);
  font-style: italic;
  color: var(--celadon);
  font-size: 17px;
  display: flex; align-items: center; gap: 10px;
}

/* ───── Tone shape row in nav ───── */
.tone-row {
  display: inline-flex; gap: 6px; align-items: center;
}
.tone-row svg { display: block; }

/* ───── Hero ───── */
.hero { padding: 88px 0 110px; }
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--sans);
  font-size: 12px;
  color: var(--ink3);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 24px;
}
.eyebrow::before { content: ''; width: 18px; height: 1px; background: var(--ink3); display: inline-block; }

.hero h1 { margin: 0 0 22px; }
.hero .sub { color: var(--ink2); font-size: 18px; line-height: 1.55; margin: 0 0 32px; max-width: 480px; }

/* ───── Pitch contour card ───── */
.pitch-card {
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: 14px;
  padding: 32px 28px 28px;
  position: relative;
}
.pitch-card .label-row {
  display: flex; justify-content: space-between; align-items: baseline;
  margin-bottom: 8px;
}
.legend {
  display: flex; gap: 18px;
  font-family: var(--sans); font-size: 11.5px;
  color: var(--ink3); letter-spacing: 0.08em; text-transform: uppercase;
}
.legend .swatch { display: inline-block; width: 22px; height: 2px; margin-right: 7px; vertical-align: middle; }

/* ───── Problem section ───── */
.problem-body {
  max-width: 720px;
  font-family: var(--serif);
  font-size: 24px;
  line-height: 1.55;
  font-weight: 350;
  color: var(--ink);
  letter-spacing: -0.005em;
}

.tone-quartet {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  margin-top: 80px;
  max-width: 760px;
}
.tone-quartet .item { text-align: center; }
.tone-quartet .glyph {
  height: 80px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
}
.tone-quartet .name {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink2);
}
.tone-quartet .num {
  font-family: var(--serif);
  font-style: italic;
  font-size: 13px;
  color: var(--ink3);
  margin-top: 4px;
}

/* ───── Phone mockup grid ───── */
.phones {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-top: 64px;
}
.phone-col { display: flex; flex-direction: column; align-items: center; gap: 18px; }
.phone {
  width: 100%;
  max-width: 280px;
  aspect-ratio: 9 / 19;
  background: var(--surface);
  border-radius: 32px;
  border: 1px solid var(--hairline-strong);
  box-shadow: 0 1px 0 rgba(255,255,255,0.6) inset, 0 18px 40px -24px rgba(30, 42, 58, 0.18);
  padding: 18px 16px;
  display: flex; flex-direction: column;
  position: relative;
  overflow: hidden;
}
.phone .status {
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--sans); font-size: 10px; color: var(--ink2);
  padding: 4px 8px 14px;
  font-variant-numeric: tabular-nums;
}
.phone-caption { font-family: var(--serif); font-style: italic; color: var(--ink2); font-size: 14.5px; text-align: center; }

/* ───── Features 2x2 ───── */
.features-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px 80px;
  margin-top: 64px;
}
.feature .icon { margin-bottom: 18px; height: 36px; display: flex; align-items: center; }
.feature h3 {
  font-family: var(--serif);
  font-style: italic;
  font-size: 24px;
  font-weight: 400;
  margin: 0 0 10px;
  letter-spacing: -0.01em;
}
.feature p { color: var(--ink2); margin: 0; font-size: 16px; line-height: 1.6; }

/* ───── Is / Isn't ───── */
.honesty {
  display: grid;
  grid-template-columns: 1fr 1px 1fr;
  gap: 64px;
  margin-top: 56px;
}
.honesty .divider { background: var(--hairline); width: 1px; }
.honesty h3 {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 400;
  font-style: italic;
  margin: 0 0 28px;
  color: var(--ink);
}
.honesty ul { list-style: none; margin: 0; padding: 0; }
.honesty li {
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.45;
  color: var(--ink);
  padding: 14px 0;
  border-bottom: 1px solid var(--hairline);
  font-weight: 350;
}
.honesty li:last-child { border-bottom: 0; }
.honesty .col-isnt li { color: var(--ink2); }

/* ───── Founder ───── */
.founder-body {
  font-family: var(--serif);
  font-style: italic;
  font-size: 22px;
  line-height: 1.55;
  color: var(--ink);
  max-width: 720px;
  font-weight: 350;
}
.founder-sig {
  font-family: var(--serif);
  font-style: italic;
  color: var(--ink2);
  margin-top: 8px;
}

/* ───── Big CTA ───── */
.cta {
  padding: 160px 0 140px;
  text-align: center;
  position: relative;
}
.cta h2 { font-family: var(--serif); font-size: clamp(40px, 5vw, 60px); line-height: 1.08; letter-spacing: -0.4px; margin: 0 0 18px; font-weight: 350; }
.cta .sub { max-width: 540px; margin: 0 auto 36px; color: var(--ink2); font-size: 17px; line-height: 1.55; }
.cta .micro { color: var(--ink3); font-size: 13.5px; margin-top: 20px; font-family: var(--sans); }
.cta-marks { display: flex; justify-content: center; gap: 22px; margin-bottom: 36px; opacity: 0.7; }

/* ───── Footer ───── */
.footer {
  border-top: 1px solid var(--hairline);
  padding: 48px 0 56px;
  text-align: center;
}
.footer-row {
  display: flex; justify-content: center; align-items: center; gap: 22px;
  color: var(--ink3); font-size: 13.5px; font-family: var(--sans);
}
.footer-row .sep { color: var(--hairline-strong); }
.footer-marks { display: flex; justify-content: center; gap: 18px; margin-top: 20px; opacity: 0.55; }

/* ───── Tone label cluster (above pitch contour chars) ───── */
.char-row {
  display: grid;
  margin-top: 22px;
}
.char-cell { text-align: center; padding: 10px 4px 8px; border-radius: 6px; transition: background 200ms ease; }
.char-cell.missed { background: rgba(217, 107, 69, 0.14); }
.char-cell .tone-mark { height: 22px; display: flex; align-items: center; justify-content: center; margin-bottom: 8px; }
.char-cell .hz {
  font-family: var(--hanzi);
  font-size: 26px;
  color: var(--ink);
  line-height: 1;
  margin-bottom: 6px;
}
.char-cell .py {
  font-family: var(--sans);
  font-size: 11.5px;
  color: var(--ink2);
  letter-spacing: 0.04em;
}

/* Section heading helpers */
.section-heading { max-width: 720px; margin-bottom: 36px; }
.section-eyebrow {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--persimmon);
  margin-bottom: 18px;
  display: flex; align-items: center; gap: 12px;
}
.section-eyebrow .num { color: var(--ink3); font-family: var(--serif); font-style: italic; letter-spacing: 0; text-transform: none; font-size: 14px; }

/* Section break decorative marks */
.section-marks {
  display: flex; justify-content: center; gap: 32px;
  padding: 64px 0;
  opacity: 0.55;
}

/* ───── Shadowing section ───── */
.shadowing-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 72px;
  align-items: start;
  margin-top: 56px;
}
.shadowing-body p {
  font-family: var(--serif);
  font-size: 21px;
  line-height: 1.55;
  color: var(--ink);
  margin: 0 0 22px;
  font-weight: 350;
  letter-spacing: -0.003em;
}
.shadowing-body p:last-child { margin-bottom: 0; }

.research-callout {
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: 14px;
  padding: 32px 30px;
  position: relative;
}
.research-quote {
  font-family: var(--serif);
  font-style: italic;
  font-size: 21px;
  line-height: 1.5;
  color: var(--ink);
  font-weight: 350;
  text-indent: -0.4em;
  padding-left: 0.4em;
  letter-spacing: -0.005em;
}
.research-cite {
  font-family: var(--sans);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink3);
  margin-top: 24px;
  line-height: 1.5;
}
.research-marks {
  display: flex; gap: 16px;
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--hairline);
  opacity: 0.55;
}

/* Stat row beneath shadowing */
.research-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
  margin-top: 88px;
  padding-top: 56px;
  border-top: 1px solid var(--hairline);
}
.research-stats .stat {
  display: flex; flex-direction: column; gap: 12px;
}
.research-stats .stat-num {
  font-family: var(--serif);
  font-size: clamp(56px, 6vw, 80px);
  line-height: 0.95;
  color: var(--ink);
  letter-spacing: -0.02em;
  font-weight: 350;
}
.research-stats .stat-sm {
  font-size: 0.5em;
  color: var(--ink3);
  vertical-align: super;
  margin-left: 4px;
  letter-spacing: 0;
}
.research-stats .stat-label {
  font-family: var(--sans);
  font-size: 14px;
  color: var(--ink2);
  line-height: 1.45;
  letter-spacing: 0.01em;
}
.research-stats .stat-label span {
  color: var(--ink3);
  font-size: 12.5px;
  font-style: normal;
  font-family: var(--serif);
}

@media (max-width: 880px) {
  .shadowing-grid { grid-template-columns: 1fr; gap: 40px; }
  .research-stats { grid-template-columns: 1fr; gap: 32px; padding-top: 40px; margin-top: 56px; }
  .research-stats .stat-num { font-size: 52px; }
}

/* Diff section */
.diff-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 72px;
  align-items: center;
  margin-top: 56px;
}
.diff-grid .copy p { color: var(--ink2); font-size: 17px; line-height: 1.65; }
.diff-grid .quote {
  font-family: var(--serif);
  font-style: italic;
  font-size: 19px;
  color: var(--ink);
  margin-top: 22px;
  padding-left: 18px;
  border-left: 2px solid var(--persimmon);
}

/* Annotation callout on big contour */
.annotation {
  position: absolute;
  font-family: var(--serif);
  font-style: italic;
  font-size: 13.5px;
  color: var(--ink2);
  max-width: 220px;
  line-height: 1.4;
}
.annotation::before {
  content: '';
  position: absolute;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--persimmon);
}

/* ───── Responsive ───── */
@media (max-width: 880px) {
  :root { --gutter: 24px; }
  .section { padding: 80px 0; }
  .hero-grid { grid-template-columns: 1fr; gap: 56px; }
  .phones { grid-template-columns: 1fr; gap: 56px; }
  .features-grid { grid-template-columns: 1fr; gap: 48px; }
  .honesty { grid-template-columns: 1fr; gap: 48px; }
  .honesty .divider { display: none; }
  .tone-quartet { grid-template-columns: repeat(2, 1fr); gap: 48px 32px; }
  .diff-grid { grid-template-columns: 1fr; gap: 48px; }
  .waitlist-form { flex-direction: column; }
  .nav-inner { padding: 16px var(--gutter); }
  .wordmark { font-size: 19px; }
  .brand { gap: 12px; }
}

/* Print / fade-in */
.fade-up { opacity: 0; transform: translateY(12px); transition: opacity 700ms ease, transform 700ms ease; }
.fade-up.in { opacity: 1; transform: none; }