/* Hapito — brand tokens from brand/STYLE_GUIDE.md */
:root {
  --seal: #D4483B;       /* 朱 vermilion — mark & display only */
  --accent: #C43D2F;     /* darkened vermilion — links, buttons, text <24px */
  --brand: #14315C;      /* 藍 indigo — headings, nav, footer ground */
  --brand-deep: #0E2240; /* deeper indigo for hover / footer */
  --brand-soft: #E8EEF6; /* soft indigo wash */
  --paper: #FBFAF7;      /* warm paper stock */
  --ink: #14181F;        /* body text */
  --ink-soft: #3A4150;
  --muted: #6B7280;
  --line: #E2E0DA;
  --white: #ffffff;
  --ok: #0f6b4c;
  --warn: #8a5a00;
  --max: 68rem;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --sans: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: "SF Mono", ui-monospace, Menlo, Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 5.5rem; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 1.05rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
a:hover { color: var(--brand); }
.wrap { width: min(100% - 2rem, var(--max)); margin-inline: auto; }
.narrow { width: min(100% - 2rem, 42rem); margin-inline: auto; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding: 0.85rem 0;
}
.brand {
  display: flex; align-items: center;
  gap: 0.55rem; /* ~40% of 32px mark diameter per lockup rule */
  color: var(--brand); text-decoration: none;
  font-family: var(--serif);
  font-weight: 700; letter-spacing: -0.02em;
  font-size: 1.2rem;
}
.brand img {
  width: 2rem; height: 2rem;
  border-radius: 50%; /* seal is a circle — never a rounded square */
  flex-shrink: 0;
}
.brand span { line-height: 1; }
.nav-links { display: flex; align-items: center; gap: 1.1rem; flex-wrap: wrap; }
.nav-links > a:not(.btn) { color: var(--ink-soft); text-decoration: none; font-size: 0.95rem; }
.nav-links > a:not(.btn):hover { color: var(--brand); }
.nav-links .btn { margin-left: 0.25rem; }

/* Buttons — accent for readable CTAs (not seal; seal fails AA for small text) */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 0.4rem; padding: 0.7rem 1.15rem;
  border-radius: 999px; border: 1px solid transparent;
  font: inherit; font-size: 0.95rem; font-weight: 600;
  text-decoration: none; cursor: pointer;
  transition: transform .15s ease, background .15s ease, border-color .15s ease, color .15s ease;
}
.btn:hover { transform: translateY(-1px); text-decoration: none; }
.btn-primary,
.nav-links a.btn-primary,
a.btn-primary {
  background: var(--accent);
  color: #fff !important;
  border-color: var(--accent);
}
.btn-primary:hover,
.nav-links a.btn-primary:hover,
a.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--brand);
  color: #fff !important;
  border-color: var(--brand);
}
.btn-secondary,
a.btn-secondary {
  background: var(--white);
  color: var(--brand) !important;
  border-color: var(--line);
}
.btn-secondary:hover,
a.btn-secondary:hover {
  border-color: var(--brand);
  color: var(--brand) !important;
}
.btn:disabled { opacity: 0.65; cursor: not-allowed; transform: none; }
.btn-row { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.5rem; }

/* Hero — document paper, soft indigo wash only */
.hero {
  padding: 4.5rem 0 3.5rem;
  background:
    radial-gradient(1000px 400px at 10% -10%, color-mix(in srgb, var(--brand) 8%, transparent), transparent 60%),
    radial-gradient(800px 300px at 90% 0%, color-mix(in srgb, var(--seal) 6%, transparent), transparent 55%),
    var(--paper);
}
.eyebrow {
  display: inline-block; margin: 0 0 1rem;
  padding: 0.28rem 0.7rem; border-radius: 999px;
  background: var(--brand-soft); color: var(--brand);
  font-size: 0.78rem; font-weight: 650; letter-spacing: 0.04em; text-transform: uppercase;
}
.hero h1 {
  margin: 0 0 1rem; max-width: 16ch;
  font-family: var(--serif);
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  line-height: 1.08; letter-spacing: -0.03em; font-weight: 600;
  color: var(--brand);
}
.lede {
  margin: 0; max-width: 38rem;
  color: var(--ink-soft); font-size: 1.15rem;
}
.hero-grid {
  display: grid; gap: 2rem;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: start;
}
@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero h1 { max-width: none; }
}

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: 1.25rem 1.35rem;
  box-shadow: 0 10px 30px color-mix(in srgb, var(--brand) 5%, transparent);
}
.card h2, .card h3 { margin-top: 0; }
.price-card .price {
  font-family: var(--serif);
  font-size: 2.4rem; line-height: 1; letter-spacing: -0.03em; margin: 0.35rem 0;
  color: var(--brand);
}
.price-card .price span { font-size: 1rem; color: var(--muted); font-family: var(--sans); }
.price-card ul { margin: 1rem 0 0; padding-left: 1.1rem; color: var(--ink-soft); }
.price-card li { margin: 0.35rem 0; }

/* Sections */
section { padding: 3.25rem 0; }
section.alt { background: var(--white); border-block: 1px solid var(--line); }
h2 {
  margin: 0 0 0.85rem;
  font-family: var(--serif);
  font-size: clamp(1.7rem, 3vw, 2.15rem);
  letter-spacing: -0.02em; font-weight: 600;
  color: var(--brand);
}
h3 { margin: 1.5rem 0 0.5rem; font-size: 1.15rem; letter-spacing: -0.01em; color: var(--brand); }
p { margin: 0 0 1rem; }
.muted { color: var(--muted); }
.ink-soft { color: var(--ink-soft); }

.grid-3 {
  display: grid; gap: 1rem;
  grid-template-columns: repeat(3, 1fr);
}
.grid-2 {
  display: grid; gap: 1rem;
  grid-template-columns: repeat(2, 1fr);
}
@media (max-width: 800px) {
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  #request > .wrap { grid-template-columns: 1fr !important; }
}
.feature {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  padding: 1.2rem 1.25rem;
}
.feature .n {
  display: inline-flex; align-items: center; justify-content: center;
  width: 1.7rem; height: 1.7rem; border-radius: 999px;
  background: var(--brand-soft); color: var(--brand);
  font-size: 0.8rem; font-weight: 700; margin-bottom: 0.7rem;
}
.feature h3 { margin: 0 0 0.4rem; font-size: 1.05rem; }
.feature p { margin: 0; color: var(--ink-soft); font-size: 0.98rem; }

table {
  width: 100%; border-collapse: collapse; font-size: 0.95rem;
  background: var(--white); border: 1px solid var(--line); border-radius: 0.8rem; overflow: hidden;
}
th, td { text-align: left; padding: 0.8rem 0.95rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: var(--brand-soft); color: var(--brand-deep); font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.04em; }
tr:last-child td { border-bottom: 0; }

.quote {
  border-left: 3px solid var(--seal);
  padding: 0.2rem 0 0.2rem 1rem;
  margin: 1.25rem 0;
  color: var(--ink-soft);
  font-family: var(--serif);
  font-size: 1.15rem;
}
.note {
  background: var(--brand-soft);
  border: 1px solid color-mix(in srgb, var(--brand) 15%, white);
  border-radius: 0.75rem;
  padding: 0.9rem 1rem;
  color: var(--ink-soft);
  font-size: 0.95rem;
}
.note strong { color: var(--brand-deep); }

/* Brief document look */
.brief {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: clamp(1.25rem, 3vw, 2.25rem);
  box-shadow: 0 12px 40px color-mix(in srgb, var(--brand) 6%, transparent);
}
.brief .meta {
  display: flex; flex-wrap: wrap; gap: 0.75rem 1.25rem;
  margin: 0 0 1.25rem; padding-bottom: 1rem; border-bottom: 1px solid var(--line);
  color: var(--muted); font-size: 0.9rem;
}
.brief h1 {
  font-family: var(--serif);
  font-size: clamp(1.7rem, 3.5vw, 2.3rem);
  line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 0.75rem;
  color: var(--brand);
}
.brief h2 {
  font-size: 1.25rem; margin-top: 2rem; padding-top: 0.5rem;
  border-top: 1px solid var(--line);
}
.brief ol.standing { padding-left: 1.2rem; color: var(--ink-soft); }
.brief .action {
  background: #f3fbf7; border: 1px solid #cfe9dc; border-radius: 0.75rem;
  padding: 1rem 1.1rem; margin-top: 1.5rem;
}
.brief .action strong { color: var(--ok); }
.brief .source-list { font-size: 0.9rem; color: var(--muted); }
.brief .source-list li { margin: 0.25rem 0; }
.badge {
  display: inline-block; padding: 0.15rem 0.5rem; border-radius: 999px;
  background: #fff4df; color: var(--warn); font-size: 0.75rem; font-weight: 650;
}
.badge.ok { background: #e7f6ef; color: var(--ok); }

/* Form */
form { display: grid; gap: 0.85rem; }
label { display: grid; gap: 0.35rem; font-size: 0.9rem; font-weight: 600; color: var(--ink-soft); }
input, textarea, select {
  width: 100%; padding: 0.75rem 0.85rem;
  border: 1px solid var(--line); border-radius: 0.6rem;
  font: inherit; background: var(--white); color: var(--ink);
}
input:focus, textarea:focus, select:focus {
  outline: 2px solid color-mix(in srgb, var(--brand) 35%, white);
  border-color: var(--brand);
}
textarea { min-height: 8rem; resize: vertical; }

/* Footer — indigo document ground */
.site-footer {
  margin-top: 2rem; padding: 2.25rem 0 2.5rem;
  background: var(--brand);
  color: color-mix(in srgb, var(--paper) 75%, transparent);
  font-size: 0.9rem;
  border-top: none;
}
.site-footer .footer-grid {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem;
}
.site-footer strong { color: var(--paper); }
.site-footer a { color: color-mix(in srgb, var(--paper) 85%, transparent); text-decoration: none; }
.site-footer a:hover { color: var(--paper); }

code, .mono { font-family: var(--mono); font-size: 0.9em; }