:root {
  --bg: #f7fbfc;
  --surface: #ffffff;
  --surface-soft: #eef8f7;
  --text: #25313a;
  --muted: #6b7f89;
  --heading: #24333d;
  --line: #d7e8ea;
  --accent: #4fa3a5;
  --accent-dark: #2f7f83;
  --accent-soft: #dff3f2;
  --warm: #fff8e8;
  --warm-line: #f0d9a7;
  --warm-accent: #d89b2b;
  --blue-soft: #eef6ff;
  --danger-soft: #fff6f2;
  --shadow: 0 22px 60px rgba(35, 83, 95, 0.08);
  --radius: 26px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 12% 10%, rgba(223, 243, 242, 0.88), transparent 34%),
    radial-gradient(circle at 82% 18%, rgba(238, 246, 255, 0.84), transparent 30%),
    linear-gradient(180deg, #fbfefd 0%, var(--bg) 56%, #f2f8f9 100%);
  color: var(--text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", "Yu Gothic", "YuGothic", "Noto Sans JP", sans-serif;
  line-height: 1.75;
}

a { color: inherit; }

.site-header {
  border-bottom: 1px solid rgba(215, 232, 234, 0.78);
  background: rgba(247, 251, 252, 0.78);
  backdrop-filter: blur(14px);
}

.header-inner,
.page,
.site-footer {
  width: min(1080px, calc(100% - 40px));
  margin: 0 auto;
}

.header-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
}

.brand-mark {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
}

.brand-logo {
  display: block;
  width: 52px;
  height: 52px;
}

.brand-text { display: grid; gap: 1px; }

.brand-name {
  color: var(--heading);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.brand-subtitle {
  color: var(--muted);
  font-size: 0.78rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 0.92rem;
}

.site-nav a { text-decoration: none; }
.site-nav a:hover { color: var(--accent-dark); }

.page {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(360px, 1.12fr);
  gap: 22px;
  padding: 52px 0 46px;
  align-items: start;
}

.hero-card,
.form-card {
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-card { padding: clamp(30px, 5vw, 54px); }
.form-card { padding: clamp(28px, 4vw, 42px); }

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent-dark);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  max-width: 780px;
  color: var(--heading);
  font-size: clamp(1.42rem, 2.55vw, 1.95rem);
  font-weight: 650;
  line-height: 1.34;
  letter-spacing: -0.035em;
}

h2 {
  margin: 0;
  color: var(--heading);
  font-size: clamp(1.12rem, 1.7vw, 1.36rem);
  line-height: 1.45;
}

.body-text {
  margin-top: 26px;
  color: var(--muted);
  font-size: clamp(0.98rem, 1.35vw, 1.08rem);
}

.body-text p,
.response-note p,
.form-lead,
.form-notice p,
.site-footer p { margin: 0; }

.body-text p + p,
.response-note p + p,
.form-notice p + p { margin-top: 8px; }

.response-note {
  margin-top: 26px;
  padding: 18px 20px;
  border: 1px solid var(--warm-line);
  border-radius: 20px;
  background: linear-gradient(180deg, #fffdf7 0%, var(--warm) 100%);
  color: #5a4a2b;
  font-size: 0.92rem;
}

.form-lead {
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.95rem;
}

.contact-form {
  margin-top: 24px;
  display: grid;
  gap: 18px;
}

.field-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.field {
  display: grid;
  gap: 8px;
}

.field span {
  color: var(--heading);
  font-size: 0.92rem;
  font-weight: 700;
}

.field strong,
.field em {
  margin-left: 6px;
  font-style: normal;
  font-size: 0.74rem;
  letter-spacing: 0.03em;
}

.field strong {
  color: #9c5f13;
}

.field em {
  color: var(--muted);
  font-weight: 600;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid #cfe4e6;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--text);
  font: inherit;
  line-height: 1.5;
  outline: none;
  transition: border-color 0.16s ease, box-shadow 0.16s ease, background 0.16s ease;
}

input,
select { min-height: 48px; padding: 0 14px; }
textarea { min-height: 180px; padding: 14px; resize: vertical; }

input:focus,
select:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(79, 163, 165, 0.15);
  background: #ffffff;
}

textarea::placeholder { color: #8fa2aa; }

.form-notice {
  padding: 16px 18px;
  border: 1px solid #f0dacb;
  border-radius: 18px;
  background: var(--danger-soft);
  color: #6d5c50;
  font-size: 0.9rem;
  line-height: 1.68;
}

.submit-button {
  justify-self: start;
  min-height: 48px;
  padding: 0 24px;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  color: #ffffff;
  font: inherit;
  font-weight: 750;
  letter-spacing: 0.03em;
  cursor: pointer;
  box-shadow: 0 14px 30px rgba(47, 127, 131, 0.22);
}

.submit-button:hover { filter: brightness(0.98); }
.submit-button:active { transform: translateY(1px); }

.hidden-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.site-footer {
  padding: 0 0 34px;
  color: var(--muted);
  font-size: 0.85rem;
}

@media (max-width: 860px) {
  .header-inner { flex-direction: column; align-items: flex-start; padding: 16px 0; }
  .site-nav { flex-wrap: wrap; gap: 12px 16px; }
  .page { grid-template-columns: 1fr; padding-top: 34px; }
}

@media (max-width: 640px) {
  .header-inner,
  .page,
  .site-footer { width: min(100% - 28px, 1080px); }
  .field-grid { grid-template-columns: 1fr; }
  .hero-card,
  .form-card { border-radius: 22px; }
}