:root {
  --purple: #1A003A;
  --deep: #2B0548;
  --lime: #CCFF00;
  --white: #FFFFFF;
  --off: #FAFAF8;
  --gray: #EBEBEB;
  --gray-2: #D9D7DD;
  --text-2: #4A4358;
  --muted: #6E6880;
  --sans: 'IBM Plex Sans', 'IBM Plex Sans JP', -apple-system, 'Helvetica Neue', Arial, sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, Menlo, Consolas, monospace;
  --pad: 32px;
  --header: 54px;
  --maxw: 1200px;

  
  --bg: var(--white);
  --surface: var(--white);
  --ink: var(--purple);
  --body: var(--text-2);
  --meta: var(--muted);
  --line: var(--gray);
  --line-strong: var(--purple);
  --fill: #F5F3F8;
}
@media (max-width: 600px) { :root { --pad: 16px; } }

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3, p { margin: 0; }
h1 { font-size: 40px; line-height: 1.1; font-weight: 600; letter-spacing: -0.02em; text-wrap: balance; }
h2 { font-size: 28px; line-height: 1.2; font-weight: 600; letter-spacing: -0.01em; text-wrap: balance; }
h3 { font-size: 19px; line-height: 1.3; font-weight: 600; }
p { color: var(--body); }
@media (max-width: 600px) {
  h1 { font-size: 28px; }
  h2 { font-size: 23px; }
}

.label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--meta);
}
.mono { font-family: var(--mono); }
.meta { font-family: var(--mono); font-size: 12.5px; color: var(--meta); }
.price { font-family: var(--mono); font-weight: 500; letter-spacing: -0.02em; }
.small { font-size: 14px; }
.muted { color: var(--meta); }

.site-header {
  height: var(--header);
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 0 var(--pad);
  border-bottom: 1px solid var(--line);
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 10;
}
.wordmark {
  font-family: var(--mono);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: 0.14em;
  text-decoration: none;
  color: var(--ink);
}
.site-nav {
  margin-left: auto;
  display: flex;
  gap: 20px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.site-nav a { text-decoration: none; color: var(--meta); }
.site-nav a[aria-current="page"] { color: var(--ink); box-shadow: inset 0 -2px 0 var(--ink); }
.site-nav a:hover { color: var(--ink); }
.menu-button {
  display: none;
  width: 42px; height: 42px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  margin-left: auto;
  align-items: center; justify-content: center;
}
.menu-button svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; }
@media (max-width: 760px) {
  .site-nav { display: none; }
  .menu-button { display: inline-flex; }
  
  .site-header .header-cta { display: none; }
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 0 18px;
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid var(--line-strong);
  color: var(--ink);
  background: transparent;
  cursor: pointer;
  white-space: nowrap;
}
.btn-primary {
  background: var(--lime);
  color: var(--purple);
  border-color: var(--lime);
}
.btn-primary:hover { filter: brightness(0.96); }
.btn-ghost:hover { background: var(--fill); }
.btn .arrow { font-family: var(--mono); }
.btn-sm { min-height: 36px; padding: 0 12px; font-size: 13px; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding-left: var(--pad); padding-right: var(--pad); }
.section { padding: 56px 0; border-bottom: 1px solid var(--line); }
@media (max-width: 600px) { .section { padding: 36px 0; } }
.section-head { display: flex; flex-direction: column; gap: 10px; margin-bottom: 28px; }
.hair-grid {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.hair-grid > * { background: var(--surface); padding: 20px; min-width: 0; }
.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 900px) { .cols-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } .cols-3 { grid-template-columns: repeat(1, minmax(0, 1fr)); } }
@media (max-width: 600px) { .cols-2, .cols-4 { grid-template-columns: repeat(1, minmax(0, 1fr)); } }

.table-wrap { overflow-x: auto; max-width: 100%; }
table.ledger { border-collapse: collapse; width: 100%; min-width: 100%; }
table.ledger th, table.ledger td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line); vertical-align: top; font-size: 15px; }
table.ledger th { font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--meta); font-weight: 500; background: var(--fill); }
table.ledger td.yes { font-family: var(--mono); }
table.ledger tr:last-child td { border-bottom: 0; }

ul.checks { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
ul.checks li { position: relative; padding-left: 26px; color: var(--body); }
ul.checks li::before { content: ''; position: absolute; left: 0; top: 7px; width: 8px; height: 8px; background: var(--ink); }
ul.checks.no li::before { background: transparent; border: 1px solid var(--meta); width: 7px; height: 7px; }

.ai-label { font-family: var(--mono); font-size: 10.5px; color: var(--meta); letter-spacing: 0.02em; }

.seg { display: inline-flex; border: 1px solid var(--line-strong); font-family: var(--mono); font-size: 12px; letter-spacing: 0.04em; text-transform: uppercase; }
.seg button { background: transparent; border: 0; color: var(--meta); padding: 0 14px; min-height: 40px; cursor: pointer; font: inherit; }
.seg button + button { border-left: 1px solid var(--line-strong); }
.seg button[aria-pressed="true"] { background: var(--ink); color: var(--bg); }

.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--meta); }
.field input, .field textarea, .field select {
  font: inherit; font-size: 15px; color: var(--ink);
  background: var(--surface); border: 1px solid var(--line-strong); padding: 10px 12px; min-height: 44px;
}
.field textarea { min-height: 96px; resize: vertical; }

.site-footer { padding: 40px 0 48px; }
.site-footer .wrap { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 32px; }
.site-footer h3 { font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--meta); margin-bottom: 12px; font-weight: 500; }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; font-size: 14px; }
.site-footer a { text-decoration: none; color: var(--body); }
.site-footer .legal { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 16px; font-size: 12.5px; color: var(--meta); border-top: 1px solid var(--line); padding-top: 16px; font-family: var(--mono); }
@media (max-width: 760px) { .site-footer .wrap { grid-template-columns: 1fr; gap: 24px; } }

details.faq { border-top: 1px solid var(--line); }
details.faq:last-of-type { border-bottom: 1px solid var(--line); }
details.faq summary { cursor: pointer; list-style: none; padding: 16px 0; font-weight: 500; display: flex; justify-content: space-between; gap: 16px; }
details.faq summary::-webkit-details-marker { display: none; }
details.faq summary::after { content: '+'; font-family: var(--mono); color: var(--meta); }
details.faq[open] summary::after { content: '\2212'; }
details.faq p { padding: 0 0 16px; max-width: 70ch; }

.mock-note { position: fixed; left: 0; bottom: 0; z-index: 20; font-family: var(--mono); font-size: 10.5px; padding: 4px 8px; background: var(--purple); color: var(--white); opacity: .75; }
.sample-row { color: var(--meta); font-style: italic; }