:root {
  color-scheme: light;
  --font-sans: "BIZ UDPGothic", "Hiragino Sans", "Yu Gothic UI", "Yu Gothic", Meiryo, sans-serif;
  --font-head: "Yu Mincho", "Hiragino Mincho ProN", "MS PMincho", serif;

  --bg: #f2f4f8;
  --surface: #ffffff;
  --surface-muted: #f8fafc;
  --surface-alt: #e8eef5;
  --text: #1f2a37;
  --muted: #526072;
  --line: #cfdae8;
  --primary: #103f77;
  --primary-strong: #0c325f;
  --accent: #d89f39;
  --on-primary: #ffffff;
  --focus: #f7b84f;
  --shadow: 0 10px 24px rgba(16, 47, 83, 0.08);

  --space-1: 0.5rem;
  --space-2: 0.75rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  --space-6: 3rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.7;
}

a {
  color: inherit;
}

.container {
  width: min(100% - 2rem, 960px);
  margin: 0 auto;
}

.skip-link {
  position: absolute;
  left: var(--space-3);
  top: -100%;
  z-index: 1000;
  padding: var(--space-2) var(--space-3);
  background: var(--primary);
  color: var(--on-primary);
  border-radius: 0.5rem;
  text-decoration: none;
}

.skip-link:focus-visible {
  top: var(--space-3);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  min-height: 4rem;
  display: flex;
  gap: var(--space-4);
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 800;
  text-decoration: none;
  letter-spacing: 0.03em;
  color: var(--primary);
}

.brand-logo {
  width: 2rem;
  height: 2rem;
  display: block;
}

.brand-text {
  white-space: nowrap;
}

.nav-links {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  font-size: 0.95rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--muted);
}

.nav-links a:hover {
  color: var(--primary);
}

.nav-toggle {
  display: none;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(3.5rem, 8vw, 6.5rem) 0;
  background:
    radial-gradient(130% 100% at 0% 0%, color-mix(in srgb, var(--primary) 12%, transparent), transparent),
    radial-gradient(90% 70% at 100% 0%, color-mix(in srgb, var(--accent) 18%, transparent), transparent),
    linear-gradient(180deg, var(--surface), var(--surface-muted));
}

.hero .container {
  position: relative;
  z-index: 1;
  animation: hero-in 500ms ease-out both;
}

.hero-with-symbol::after {
  content: "";
  position: absolute;
  right: -2.5rem;
  bottom: -8rem;
  width: clamp(17rem, 36vw, 34rem);
  aspect-ratio: 1 / 1;
  background: url("assets/hero_symbol_detail.png") no-repeat center / contain;
  opacity: 0.1;
  pointer-events: none;
  filter: saturate(0.85);
}

.eyebrow {
  margin: 0 0 var(--space-2);
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.84rem;
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.3;
}

h1 {
  margin-bottom: var(--space-3);
  font-size: clamp(1.8rem, 5vw, 2.7rem);
  font-family: var(--font-head);
  letter-spacing: 0.01em;
}

h2 {
  margin-bottom: var(--space-4);
  font-size: clamp(1.3rem, 3.8vw, 1.85rem);
  font-family: var(--font-head);
}

.hero-sub {
  max-width: 44rem;
  margin-bottom: var(--space-4);
  color: var(--muted);
}

.hero-sub-break {
  display: none;
}

.cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0.7rem 1.1rem;
  border-radius: 0.6rem;
  border: 1px solid transparent;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 120ms ease, border-color 120ms ease, transform 120ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: var(--primary);
  color: var(--on-primary);
}

.button-primary:hover {
  background: var(--primary-strong);
}

.button-secondary {
  border-color: var(--line);
  background: var(--surface);
  color: var(--text);
}

.hero-note,
.section-note,
.assist-line,
.privacy-note,
.contact-helper,
.contact-lead {
  color: var(--muted);
  font-size: 0.93rem;
}

.hero-points {
  margin: var(--space-4) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  justify-items: center;
  gap: var(--space-2);
}

.hero-points li {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  width: fit-content;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface) 90%, var(--accent) 10%);
  padding: 0.25rem 0.8rem;
  font-size: 0.88rem;
  text-align: center;
}

.section {
  padding: clamp(2.8rem, 6vw, 4.4rem) 0;
}

.section-alt {
  background: var(--surface-alt);
}

.panel,
.card,
.faq-list details,
.contact-form {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  box-shadow: var(--shadow);
}

.fit-grid,
.value-grid,
.service-grid {
  display: grid;
  gap: var(--space-3);
}

.panel {
  padding: var(--space-4);
}

.panel ul {
  margin: 0;
  padding-left: 1.2rem;
}

.panel li + li {
  margin-top: var(--space-1);
}

.assist-line {
  margin-top: var(--space-3);
}

.service-grid {
  grid-template-columns: 1fr;
}

.value-grid {
  grid-template-columns: 1fr;
}

.card {
  padding: var(--space-4);
  background: var(--surface-muted);
  animation: card-in 500ms ease both;
}

.card h3 {
  margin-bottom: var(--space-2);
  font-size: 1.06rem;
}

.card p {
  margin: 0;
  color: var(--muted);
}

.menu-card {
  border-top: 4px solid color-mix(in srgb, var(--primary) 76%, white 24%);
}

.menu-tag {
  margin: 0 0 var(--space-2);
  display: inline-block;
  padding: 0.1rem 0.6rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 24%, white 76%);
  color: color-mix(in srgb, var(--primary) 70%, black 30%);
  font-size: 0.75rem;
  font-weight: 700;
}

.process-list {
  margin: 0;
  padding-left: 1.2rem;
}

.process-list li {
  margin-bottom: var(--space-3);
}

.process-list strong {
  display: block;
  margin-bottom: 0.2rem;
}

.process-list span {
  color: var(--muted);
}

.data-list,
.next-list {
  margin: 0;
  padding-left: 1.2rem;
}

.data-list li + li,
.next-list li + li {
  margin-top: var(--space-2);
}

.faq-list {
  display: grid;
  gap: var(--space-2);
}

.faq-list details {
  padding: var(--space-3) var(--space-4);
}

.faq-list summary {
  cursor: pointer;
  font-weight: 600;
}

.faq-list p {
  margin: var(--space-2) 0 0;
  color: var(--muted);
}

.contact-form {
  margin-top: var(--space-3);
  padding: var(--space-4);
}

.contact-lead {
  margin: 0 0 var(--space-2);
}

.field + .field {
  margin-top: var(--space-3);
}

label {
  display: inline-block;
  margin-bottom: 0.4rem;
  font-weight: 600;
}

input,
select,
textarea {
  width: 100%;
  padding: 0.7rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 0.6rem;
  background: var(--surface-muted);
  color: var(--text);
  font: inherit;
}

textarea {
  resize: vertical;
}

.checkbox-field {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
}

.checkbox-field input {
  width: 1rem;
  height: 1rem;
  margin-top: 0.25rem;
  padding: 0;
  flex-shrink: 0;
}

.checkbox-field label {
  margin: 0;
  font-weight: 500;
}

.privacy-note {
  margin: var(--space-3) 0;
}

.field-hp {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  clip-path: inset(50%);
  border: 0;
  white-space: nowrap;
}

.form-status {
  margin: var(--space-2) 0 var(--space-3);
  min-height: 1.4rem;
  font-size: 0.92rem;
}

.form-status[data-state="pending"] {
  color: var(--muted);
}

.form-status[data-state="success"] {
  color: var(--primary);
}

.form-status[data-state="error"] {
  color: #a42d2d;
}

.contact-form button[disabled] {
  opacity: 0.78;
  cursor: wait;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: var(--space-4) 0;
}

.site-footer p {
  margin: 0;
  text-align: center;
  color: var(--muted);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

@keyframes hero-in {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes card-in {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero .container,
  .card {
    animation: none;
  }
}

@media (min-width: 720px) {
  .value-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .service-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-points {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .hero-points li {
    width: 100%;
  }
}

@media (min-width: 820px) {
  .fit-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  #menu .service-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .hero-sub-break {
    display: inline;
  }
}

@media (max-width: 900px) {
  .header-inner {
    position: relative;
    min-height: 4rem;
    flex-wrap: nowrap;
    gap: var(--space-2);
    padding: 0.55rem 0;
  }

  .nav-ready .nav-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    margin-left: auto;
    min-height: 2.2rem;
    padding: 0.35rem 0.72rem;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: var(--surface);
    color: var(--muted);
    font: inherit;
    font-size: 0.88rem;
    cursor: pointer;
    white-space: nowrap;
  }

  .nav-ready .nav-toggle::before {
    content: "\2630";
    line-height: 1;
    font-size: 1rem;
  }

  .nav-ready .nav-toggle[aria-expanded="true"]::before {
    content: "\00d7";
    font-size: 1.05rem;
  }

  .nav-ready .header-inner > nav {
    position: absolute;
    top: calc(100% + 0.35rem);
    left: 0;
    right: 0;
    z-index: 120;
    display: none;
    padding: var(--space-2);
    border: 1px solid var(--line);
    border-radius: 0.8rem;
    background: color-mix(in srgb, var(--surface) 96%, var(--surface-alt) 4%);
    box-shadow: var(--shadow);
  }

  .nav-ready .site-header.nav-open .header-inner > nav {
    display: block;
  }

  .nav-links {
    display: grid;
    gap: 0.3rem;
  }

  .nav-links a {
    display: block;
    padding: 0.42rem 0.5rem;
    border-radius: 0.45rem;
  }

  .nav-links a:hover {
    background: color-mix(in srgb, var(--surface-alt) 55%, var(--surface) 45%);
  }
}

@media (max-width: 719px) {
  .hero-points {
    justify-items: stretch;
  }

  .hero-points li {
    width: 100%;
  }

  .hero-with-symbol::after {
    right: -5rem;
    bottom: -10rem;
    width: min(80vw, 22rem);
    opacity: 0.08;
  }
}