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

:root {
  --red: #b13328;
  --red-dark: #8f2921;
  --ink: #2b2622;
  --ink-sub: #5c554e;
  --bg: #ffffff;
  --bg-alt: #f7f7f5;
  --border: #e4e2dd;
  --card-bg: #ffffff;
  --radius: 12px;
  color-scheme: light;
}

body {
  font-family: "Hiragino Sans", "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

a { color: inherit; }

/* ─── Header ─── */
.site-header {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.5rem;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
}
.brand-name {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--ink);
}
.site-header nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.9rem;
}
.site-header nav > a:not(.btn) {
  color: var(--ink-sub);
  text-decoration: none;
}
.site-header nav > a:not(.btn):hover { color: var(--red); }

/* ─── Buttons ─── */
.btn {
  display: inline-block;
  padding: 0.55rem 1.3rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .12s, box-shadow .12s;
}
.btn-primary {
  background: var(--red);
  color: #fff;
}
.btn-primary:hover { background: var(--red-dark); transform: translateY(-1px); }
.btn-lg { padding: 0.85rem 2rem; font-size: 1rem; }

/* ─── Hero ─── */
.hero {
  padding: 5rem 0 4rem;
  text-align: center;
}
.hero-eyebrow {
  color: var(--red);
  font-weight: 700;
  letter-spacing: 0.18em;
  font-size: 0.78rem;
  margin-bottom: 1rem;
}
.hero h1 {
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 1.2rem;
}
.hero-lead {
  color: var(--ink-sub);
  font-size: 1.02rem;
  max-width: 42rem;
  margin: 0 auto 2rem;
}

/* ─── Stats ─── */
.stats {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 2.5rem 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.5rem;
  text-align: center;
}
.stat-num {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--red);
  line-height: 1;
}
.stat-label {
  margin-top: 0.5rem;
  color: var(--ink-sub);
  font-size: 0.82rem;
}

/* ─── Section titles ─── */
.section-title {
  font-size: 1.6rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 0.5rem;
}
.section-lead {
  text-align: center;
  color: var(--ink-sub);
  font-size: 0.92rem;
  margin-bottom: 2.5rem;
}

/* ─── Services ─── */
.services { padding: 4.5rem 0; }
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}
.service-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.8rem;
  text-align: center;
}
.service-icon { font-size: 2rem; margin-bottom: 0.8rem; }
.service-card h3 { font-size: 1.05rem; margin-bottom: 0.6rem; }
.service-card p { color: var(--ink-sub); font-size: 0.88rem; }

/* ─── Portfolio ─── */
.portfolio { padding: 4.5rem 0; background: var(--bg-alt); }
.portfolio-group-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--red);
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border);
}
.portfolio-group-title:first-of-type { margin-top: 0; }
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.2rem;
}
.p-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.3rem 1.4rem;
  transition: transform .12s, border-color .12s;
}
.p-card:hover { transform: translateY(-2px); border-color: var(--red); }
.p-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}
.p-head h4 { font-size: 0.98rem; font-weight: 700; line-height: 1.4; }
.badge {
  flex-shrink: 0;
  font-size: 0.62rem;
  font-weight: 700;
  color: #fff;
  background: var(--red);
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  white-space: nowrap;
}
.p-card p { color: var(--ink-sub); font-size: 0.83rem; margin-bottom: 0.8rem; }
.tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.tag {
  font-size: 0.68rem;
  font-weight: 500;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  background: var(--bg-alt);
  color: var(--ink-sub);
  border: 1px solid var(--border);
}

/* ─── FAQ ─── */
.faq { padding: 4.5rem 0; }
.faq-list {
  max-width: 42rem;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
}
.faq-item h3 {
  font-size: 0.95rem;
  margin-bottom: 0.4rem;
}
.faq-item p {
  color: var(--ink-sub);
  font-size: 0.86rem;
}

/* ─── Contact ─── */
.contact { padding: 4.5rem 0 6rem; }
.contact-form {
  max-width: 32rem;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}
.contact-form label {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink-sub);
}
.required {
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--red);
  margin-left: 0.4rem;
}
.contact-form input,
.contact-form textarea {
  font: inherit;
  padding: 0.7rem 0.9rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--card-bg);
  color: var(--ink);
  resize: vertical;
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--red);
}
.contact-form button { align-self: flex-start; }
.form-status {
  font-size: 0.85rem;
  min-height: 1.2em;
}
.form-status.ok { color: #2f9e44; }
.form-status.error { color: var(--red); }

/* ─── Footer ─── */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  text-align: center;
  color: var(--ink-sub);
  font-size: 0.8rem;
}

/* ─── Responsive ─── */
@media (max-width: 640px) {
  .header-inner { flex-wrap: wrap; gap: 0.6rem; }
  .site-header nav { gap: 0.9rem; }
  .hero { padding: 3rem 0 2.5rem; }
}