/* trustcode wireframe — semi-clean monochrome + brand accents */
:root {
  --ink: #0F1B2D;        /* trust navy */
  --ink-2: #1E293B;
  --ink-3: #475569;
  --ink-4: #94A3B8;
  --line: #CBD5E1;
  --line-2: #E2E8F0;
  --paper: #F1F5F9;
  --card: #FFFFFF;
  --code: #0E8C4A;       /* trustcode green */
  --code-soft: #E6F4EC;
  --primary: #3B82F6;    /* product primary */
  --primary-soft: #EFF6FF;
  --warn: #F59E0B;
  --danger: #EF4444;
  --radius: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px rgba(15,27,45,.06), 0 1px 1px rgba(15,27,45,.04);
  --shadow-md: 0 6px 24px rgba(15,27,45,.08);
  --grid: 1200px;
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN",
    "Noto Sans JP", "Yu Gothic UI", sans-serif;
  color: var(--ink-2);
  background: var(--card);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "palt";
}

/* ── primitives ──────────────────────────────────────────── */
.tc-logo {
  font-family: "Helvetica Neue", "Arial", sans-serif;
  font-weight: 700;
  letter-spacing: -0.02em;
  font-size: 22px;
  display: inline-flex; align-items: baseline;
  color: var(--ink);
}
.tc-logo .code { color: var(--code); }
.tc-logo .dot { color: var(--code); }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px;
  height: 44px; padding: 0 20px;
  border-radius: 8px;
  font-weight: 600; font-size: 14px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: transform .08s ease, background .15s, border-color .15s;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: #2563EB; }
.btn-ghost { background: transparent; color: var(--ink-2); border-color: var(--line); }
.btn-ghost:hover { background: var(--paper); }
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: #0a1422; }
.btn-lg { height: 52px; padding: 0 24px; font-size: 15px; }
.btn-sm { height: 36px; padding: 0 14px; font-size: 13px; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; font-weight: 600;
  color: var(--code);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.eyebrow::before {
  content: ""; width: 18px; height: 1px; background: var(--code);
}

h1, h2, h3, h4 { color: var(--ink); margin: 0; letter-spacing: -0.01em; line-height: 1.3; }
p { margin: 0; }

.section { padding: 88px 0; }
#about,
#value,
#features,
#usecase,
#price {
  scroll-margin-top: 80px;
}

.section--paper { background: var(--paper); }
.section--ink { background: var(--ink); color: #E2E8F0; }
.section--ink h1, .section--ink h2, .section--ink h3 { color: #fff; }

.container { width: min(100% - 48px, var(--grid)); margin-inline: auto; }

.section-head { max-width: 720px; margin-bottom: 56px; }
.section-head h2 { font-size: clamp(28px, 3.4vw, 40px); margin-top: 12px; }
.section-head p { color: var(--ink-3); margin-top: 16px; font-size: 16px; }

/* ── nav ─────────────────────────────────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 30;
  background: rgba(255,255,255,.85);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--line-2);
}
.nav-inner {
  height: 64px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-links { display: flex; gap: 28px; }
.nav-links a { color: var(--ink-2); text-decoration: none; font-size: 14px; font-weight: 500; }
.nav-links a:hover { color: var(--ink); }
.nav-cta { display: flex; gap: 10px; align-items: center; }
@media (max-width: 720px) {
  .nav-links { display: none; }
  .nav-cta .btn-ghost { display: none; }
}

/* ── footer ─────────────────────────────────────────────── */
.footer {
  background: rgba(255,255,255,.85);
  backdrop-filter: saturate(180%) blur(10px);
  border-top: 1px solid var(--line-2);
  color: var(--ink-2);
  padding: 56px 0 32px;
}
.footer .container { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 32px; }
.footer h5 { color: var(--ink); font-size: 13px; margin-bottom: 14px; letter-spacing: 0.06em; text-transform: uppercase; }
.footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.footer a { color: var(--ink-2); text-decoration: none; font-size: 14px; font-weight: 500; }
.footer a:hover { color: var(--ink); }
.footer-bottom {
  border-top: 1px solid var(--line-2);
  margin-top: 40px;
  padding-top: 20px;
  font-size: 12px;
  color: var(--ink-2);
}
@media (max-width: 720px) {
  .footer .container { grid-template-columns: 1fr 1fr; }
}

/* ── static subpages（会社概要・法務など）──────────────────── */
.promo-static-wrap {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.promo-static-main {
  flex: 1;
  padding: 48px 0 80px;
}
.promo-static-inner {
  width: min(100% - 48px, 760px);
  margin-inline: auto;
}
.promo-static-inner h1 {
  font-size: clamp(26px, 3vw, 34px);
  margin-bottom: 12px;
}
.promo-static-meta {
  font-size: 13px;
  color: var(--ink-3);
  margin-bottom: 32px;
}
.promo-static-prose {
  font-size: 15px;
  color: var(--ink-2);
}
.promo-static-prose h2 {
  font-size: 18px;
  margin: 36px 0 14px;
}
.promo-static-prose h3 {
  font-size: 15px;
  margin: 24px 0 10px;
}
.promo-static-prose p { margin: 0 0 14px; }
.promo-static-prose ul,
.promo-static-prose ol { margin: 0 0 14px; padding-left: 1.35em; }
.promo-static-prose li { margin-bottom: 8px; }
.promo-static-prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin: 16px 0 24px;
}
.promo-static-prose th,
.promo-static-prose td {
  border: 1px solid var(--line-2);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}
.promo-static-prose th { background: var(--paper); color: var(--ink); }
.promo-static-prose blockquote {
  margin: 16px 0;
  padding: 12px 16px;
  border-left: 4px solid var(--line);
  background: var(--paper);
  font-size: 13px;
  color: var(--ink-3);
}
.promo-static-prose hr {
  border: none;
  border-top: 1px solid var(--line-2);
  margin: 28px 0;
}
.promo-static-footer { margin-top: auto; }

/* ── frame chrome (PC / SP) ──────────────────────────────── */
.frame {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow-md);
  overflow: hidden;
}
.frame-bar {
  height: 36px;
  background: #F8FAFC;
  border-bottom: 1px solid var(--line-2);
  display: flex; align-items: center; gap: 6px; padding: 0 14px;
}
.frame-bar .dot { width: 10px; height: 10px; border-radius: 50%; background: #CBD5E1; }
.frame-bar .url {
  margin-left: 16px; flex: 1;
  background: #fff; border: 1px solid var(--line-2); border-radius: 6px;
  height: 22px; font-size: 11px; color: var(--ink-4);
  display: flex; align-items: center; padding: 0 10px;
}
.frame-body { padding: 0; }

.sp-frame {
  width: 320px;
  background: #0F1B2D;
  border-radius: 28px;
  padding: 10px;
  box-shadow: var(--shadow-md);
}
.sp-screen {
  background: #fff;
  border-radius: 20px;
  overflow: hidden;
  height: 580px;
  position: relative;
}
.sp-statusbar {
  height: 28px; background: #fff;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 18px; font-size: 11px; font-weight: 600; color: var(--ink);
}

/* ── canvas labels ───────────────────────────────────────── */
.variant-meta {
  display: flex; gap: 12px; align-items: flex-start;
  margin-bottom: 12px;
}
.variant-meta .tag {
  font-size: 11px; font-weight: 700; letter-spacing: 0.06em;
  background: var(--ink); color: #fff;
  padding: 4px 8px; border-radius: 4px;
}
.variant-meta .desc { font-size: 12px; color: var(--ink-3); line-height: 1.5; }

/* ── utility ─────────────────────────────────────────────── */
.muted { color: var(--ink-3); }
.tiny { font-size: 12px; }
.row { display: flex; gap: 12px; align-items: center; }
.stack { display: grid; gap: 12px; }
.divider { height: 1px; background: var(--line-2); margin: 24px 0; }
.pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px; border-radius: 999px;
  font-size: 12px; font-weight: 600;
  background: var(--paper); color: var(--ink-2);
  border: 1px solid var(--line-2);
}
.pill-green { background: var(--code-soft); color: var(--code); border-color: #BBE5CC; }
.pill-blue { background: var(--primary-soft); color: var(--primary); border-color: #BFDBFE; }

/* sketchy dashed placeholder for image slots */
.placeholder {
  background:
    repeating-linear-gradient(45deg, transparent 0 8px, rgba(15,27,45,0.04) 8px 16px),
    var(--paper);
  border: 1.5px dashed var(--line);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: var(--ink-4); font-size: 12px; font-weight: 500;
  text-align: center; padding: 12px;
}