:root {
  --color-text: #2a3035;
  --color-muted: #6b7280;
  --color-accent: #3d6b6e;
  --color-accent-soft: #e8f0f0;
  --color-bg: #f7f6f3;
  --color-surface: #ffffff;
  --color-border: #e5e2dc;
  --color-warning: #9a4b1a;
  --color-warning-bg: #faf3eb;
  --color-error: #b42318;
  --color-error-bg: #fef3f2;
  --color-success: #1a6b42;
  --font-sans: 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Noto Sans JP',
    'Yu Gothic', 'Meiryo', sans-serif;
  --max-width: 680px;
  --max-width-wide: 960px;
  --radius: 6px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.8;
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
}

a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

a:hover {
  color: #2d5558;
}

h1,
h2,
h3 {
  line-height: 1.45;
  font-weight: 700;
  color: var(--color-text);
}

h1 {
  font-size: clamp(1.625rem, 4.5vw, 2.125rem);
  margin: 0 0 0.75rem;
  letter-spacing: -0.01em;
}

h2 {
  font-size: 1.25rem;
  margin: 2.5rem 0 0.75rem;
}

h3 {
  font-size: 1.0625rem;
  margin: 0 0 0.35rem;
}

p,
ul,
ol {
  margin: 0 0 1rem;
}

ul,
ol {
  padding-left: 1.25rem;
}

.container {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

.container--wide {
  width: min(100% - 2rem, var(--max-width-wide));
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 1000;
  padding: 0.75rem 1rem;
  background: var(--color-accent);
  color: var(--color-surface);
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

/* Header */
.site-header {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  overflow-x: hidden;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.875rem 0;
  width: min(100% - 2rem, var(--max-width-wide));
  margin-inline: auto;
  min-width: 0;
  max-width: 100%;
}

.site-logo {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
  line-height: 1.4;
  flex-shrink: 0;
  white-space: nowrap;
}

.site-logo:hover {
  color: var(--color-accent);
}

.site-nav {
  min-width: 0;
}

@media (min-width: 768px) {
  .site-nav {
    flex-shrink: 0;
  }
}

.site-nav > ul {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  align-items: center;
  gap: 0.75rem 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav li {
  flex: 0 0 auto;
}

.site-nav a {
  display: inline-block;
  padding: 0.25rem 0;
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.875rem;
  white-space: nowrap;
}

.site-nav a:hover {
  color: var(--color-accent);
}

.nav-item--dropdown {
  position: relative;
}

.nav-dropdown-trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0;
  border: 0;
  background: none;
  color: var(--color-text);
  font: inherit;
  font-size: 0.875rem;
  line-height: inherit;
  white-space: nowrap;
  cursor: pointer;
}

.nav-dropdown-trigger:hover,
.nav-dropdown-trigger[aria-current='page'] {
  color: var(--color-accent);
}

.nav-dropdown-caret {
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 0.25rem solid transparent;
  border-right: 0.25rem solid transparent;
  border-top: 0.3rem solid currentColor;
  transition: transform 0.15s ease;
}

.nav-item--dropdown.is-open .nav-dropdown-caret {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 0.35rem);
  right: 0;
  z-index: 200;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  min-width: 11.5rem;
  margin: 0;
  padding: 0.375rem 0;
  list-style: none;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.12);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-0.25rem);
  transition:
    opacity 0.15s ease,
    transform 0.15s ease,
    visibility 0.15s ease;
}

.nav-item--dropdown:hover .nav-dropdown-menu,
.nav-item--dropdown.is-open .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown-menu a {
  display: block;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  white-space: nowrap;
}

.nav-dropdown-menu a[aria-current='page'] {
  color: var(--color-accent);
  font-weight: 600;
}

@media (min-width: 768px) {
  .site-nav > ul {
    gap: 1.25rem;
  }
}

@media (max-width: 767px) {
  .header-inner {
    gap: 0.5rem;
  }

  .site-nav {
    flex: 1 1 auto;
    max-width: 100%;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior-x: contain;
    scrollbar-width: none;
  }

  .site-nav::-webkit-scrollbar {
    display: none;
  }

  .site-nav > ul {
    gap: 0.75rem;
    width: max-content;
  }
}

/* Breadcrumbs */
.breadcrumbs {
  padding: 0.75rem 0 0;
  font-size: 0.8125rem;
  color: var(--color-muted);
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0;
  list-style: none;
  margin: 0;
  padding: 0;
}

.breadcrumbs li {
  display: inline-flex;
  align-items: center;
}

.breadcrumbs li:not(:last-child)::after {
  content: '/';
  margin: 0 0.5rem;
  color: var(--color-border);
}

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

.breadcrumbs a:hover {
  color: var(--color-accent);
}

.breadcrumbs [aria-current='page'] {
  color: var(--color-text);
}

/* Related links */
.related-links {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.related-links > h2 {
  font-size: 1.125rem;
  margin: 0 0 1rem;
}

.related-links__section + .related-links__section {
  margin-top: 1rem;
}

.related-links__section h3 {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-muted);
  margin: 0 0 0.5rem;
}

.related-links ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
}

.related-links a {
  font-size: 0.9375rem;
  text-decoration: none;
}

.related-links a:hover {
  color: var(--color-accent);
}

/* Hero */
.hero {
  padding: 2.5rem 0 2rem;
  border-bottom: 1px solid var(--color-border);
}

.hero-note {
  font-size: 0.8125rem;
  color: var(--color-muted);
  margin-top: 1.25rem;
  line-height: 1.6;
}

.hero p {
  font-size: 1.0625rem;
  color: var(--color-muted);
  max-width: 36rem;
  margin: 0;
}

.hero--compact {
  padding: 1.25rem 0 0.875rem;
}

.hero--compact h1 {
  font-size: 1.5rem;
  margin-bottom: 0.35rem;
}

.hero--compact p {
  font-size: 0.9375rem;
}

.hero--compact .hero-note {
  margin-top: 0.75rem;
  font-size: 0.75rem;
}

.breadcrumbs-wrap--compact .breadcrumbs {
  padding-top: 0.5rem;
}

/* Quiz promo */
.quiz-promo {
  background: var(--color-accent-soft);
  border: 1px solid #cddede;
  border-radius: var(--radius);
  padding: 1.5rem 1.375rem;
  margin: 0 0 2rem;
}

.quiz-promo--compact {
  margin-top: 2rem;
  padding: 1.25rem 1.125rem;
}

.quiz-promo-eyebrow {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-accent);
  margin: 0 0 0.35rem;
  text-transform: uppercase;
}

.quiz-promo-title {
  font-size: 1.25rem;
  margin: 0 0 0.5rem;
}

.quiz-promo-lead {
  margin: 0 0 1rem;
  font-size: 0.9375rem;
  color: var(--color-muted);
}

.quiz-promo-points {
  margin: 0 0 1.25rem;
  padding-left: 1.125rem;
  font-size: 0.9375rem;
  color: var(--color-text);
}

.quiz-promo-points li {
  margin-bottom: 0.35rem;
}

.quiz-promo-btn {
  width: 100%;
}

.quiz-promo-note {
  margin: 0.75rem 0 0;
  font-size: 0.8125rem;
  color: var(--color-muted);
}

@media (min-width: 480px) {
  .quiz-promo-btn {
    width: auto;
    min-width: 12rem;
  }
}

.guide-steps {
  padding-left: 1.25rem;
}

.guide-steps li {
  margin-bottom: 0.5rem;
}

/* Main */
main {
  padding: 2rem 0 4rem;
}

.prose > *:first-child {
  margin-top: 0;
}

.content-section {
  margin-bottom: 2rem;
}

.content-section--plain {
  margin-bottom: 0;
}

/* Service list */
.service-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  border-top: 1px solid var(--color-border);
}

.service-list li {
  border-bottom: 1px solid var(--color-border);
}

.service-list a {
  display: block;
  padding: 1rem 0;
  text-decoration: none;
  color: var(--color-text);
}

.service-list a:hover {
  color: var(--color-accent);
}

.service-list a:hover .service-list-desc {
  color: var(--color-muted);
}

.service-list-title {
  font-weight: 600;
  display: block;
}

.service-list-desc {
  display: block;
  font-size: 0.9375rem;
  color: var(--color-muted);
  margin-top: 0.15rem;
  font-weight: 400;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.375rem;
  border-radius: var(--radius);
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  text-align: center;
  cursor: pointer;
  border: none;
  transition: background 0.15s;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-surface);
}

.btn-primary:hover {
  background: #325a5d;
  color: var(--color-surface);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 2.5rem 0;
}

/* Note box */
.note {
  background: var(--color-accent-soft);
  border-radius: var(--radius);
  padding: 1rem 1.125rem;
  font-size: 0.9375rem;
  margin: 1.5rem 0;
  line-height: 1.7;
}

.note--warn {
  background: var(--color-warning-bg);
  color: var(--color-warning);
}

/* Table */
.table-wrap {
  overflow-x: auto;
  margin: 1rem 0;
  font-size: 0.9375rem;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  border-bottom: 1px solid var(--color-border);
  padding: 0.625rem 0.75rem 0.625rem 0;
  text-align: left;
}

th {
  font-weight: 600;
  color: var(--color-muted);
  font-size: 0.8125rem;
}

/* FAQ */
.faq-list {
  margin: 1rem 0 0;
  border-top: 1px solid var(--color-border);
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-item summary {
  padding: 1rem 0;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  font-size: 0.9375rem;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item .faq-answer {
  padding: 0 0 1rem;
  color: var(--color-muted);
  font-size: 0.9375rem;
}

.faq-item .faq-answer p {
  margin: 0;
}

.prose-more-link {
  margin: 1.25rem 0 0;
  font-size: 0.8125rem;
}

.prose-more-link a {
  color: var(--color-muted);
  text-decoration: none;
}

.prose-more-link a:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

/* Form */
.form-group {
  margin-bottom: 1.125rem;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.35rem;
  font-size: 0.9375rem;
}

.form-group .required {
  color: var(--color-muted);
  font-size: 0.75rem;
  font-weight: 400;
  margin-left: 0.25rem;
}

.form-group input[type='text'],
.form-group input[type='email'],
.form-group input[type='tel'],
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.625rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font: inherit;
  background: var(--color-surface);
}

.form-group textarea {
  min-height: 100px;
  resize: vertical;
}

.form-group .helper {
  font-size: 0.8125rem;
  color: var(--color-muted);
  margin-top: 0.35rem;
}

.form-group--invalid label {
  color: var(--color-error);
}

.form-group--invalid input[type='text'],
.form-group--invalid input[type='email'],
.form-group--invalid input[type='tel'],
.form-group--invalid textarea {
  border-color: var(--color-error);
  box-shadow: 0 0 0 2px rgba(180, 35, 24, 0.12);
}

.radio-group,
.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.radio-group label,
.checkbox-group label {
  font-weight: 400;
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  cursor: pointer;
  font-size: 0.9375rem;
}

.radio-group input,
.checkbox-group input {
  margin-top: 0.35rem;
  flex-shrink: 0;
}

.radio-group--invalid {
  padding: 0.75rem;
  border: 1px solid var(--color-error);
  border-radius: var(--radius);
  background: var(--color-error-bg);
}

.consent-item--invalid {
  padding: 0.5rem 0.625rem;
  margin: -0.25rem 0;
  border: 1px solid var(--color-error);
  border-radius: var(--radius);
  background: var(--color-error-bg);
  color: var(--color-error);
}

.honeypot {
  position: absolute;
  left: -9999px;
  opacity: 0;
  height: 0;
  overflow: hidden;
}

.form-message {
  padding: 1rem;
  border-radius: var(--radius);
  margin: 1rem 0;
  display: none;
  font-size: 0.9375rem;
}

.form-message.is-visible {
  display: block;
}

.form-message--success {
  background: #edf7f1;
  color: var(--color-success);
}

.form-message--error {
  background: #fdf0ef;
  color: #9b2c2c;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 2rem 0;
  font-size: 0.8125rem;
  color: var(--color-muted);
  line-height: 1.7;
}

.site-footer a {
  color: var(--color-muted);
}

.site-footer a:hover {
  color: var(--color-accent);
}

.footer-guides {
  margin-top: 1rem;
}

.footer-guides__title {
  margin: 0;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--color-text);
}

.footer-guides ul {
  list-style: none;
  padding: 0;
  margin: 0.5rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
}

.footer-operator {
  font-weight: 400;
  color: var(--color-muted);
}

.footer-nav ul {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
}

.footer-disclosure {
  margin-top: 1.25rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-border);
}

/* Mobile CTA */
.mobile-cta {
  display: block;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 0.625rem 1rem 0.75rem;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  z-index: 90;
}

.mobile-cta-note {
  margin: 0 0 0.375rem;
  font-size: 0.75rem;
  color: var(--color-muted);
  text-align: center;
}

.mobile-cta .btn {
  width: 100%;
}

@media (min-width: 768px) {
  .mobile-cta {
    display: none;
  }
}

@media (max-width: 767px) {
  body {
    padding-bottom: 5rem;
  }

  body.no-mobile-cta {
    padding-bottom: 0;
  }
}

.error-page {
  text-align: center;
  padding: 4rem 0;
}

.error-page h1 {
  font-size: 3rem;
}

.sources {
  font-size: 0.875rem;
  color: var(--color-muted);
  margin-top: 2rem;
}

.sources ul {
  padding-left: 1rem;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Quiz */
.quiz {
  margin-top: 0;
}

.quiz-mode {
  margin-top: 0.25rem;
}

.quiz-intro {
  margin: 0 0 1.25rem;
  padding: 0.875rem 1rem;
  font-size: 0.9375rem;
  color: var(--color-text);
  background: var(--color-accent-soft);
  border: 1px solid #cddede;
  border-radius: var(--radius);
}

.quiz-contact-note {
  margin: 0 0 1rem;
  font-size: 0.875rem;
  color: var(--color-muted);
}

.quiz-contact-note a {
  color: var(--color-accent);
  word-break: break-all;
}

.quiz-progress {
  height: 4px;
  background: var(--color-border);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 0.5rem;
}

.quiz-progress-bar {
  height: 100%;
  background: var(--color-accent);
  transition: width 0.25s ease;
}

.quiz-progress-label {
  font-size: 0.8125rem;
  color: var(--color-muted);
  margin: 0 0 1.5rem;
}

.quiz-step-title {
  font-size: 1.25rem;
  margin: 0 0 0.5rem;
}

.quiz-step-subtitle {
  color: var(--color-muted);
  font-size: 0.9375rem;
  margin: 0 0 1.25rem;
}

.quiz-validation-note {
  margin: 0 0 1rem;
  padding: 0.75rem 0.875rem;
  font-size: 0.875rem;
  color: var(--color-error);
  background: var(--color-error-bg);
  border: 1px solid #fecdca;
  border-radius: var(--radius);
}

.quiz-contact-section + .quiz-contact-section {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.quiz-section-title {
  font-size: 1rem;
  margin: 0 0 0.875rem;
}

.quiz-mode-options {
  display: grid;
  gap: 0.75rem;
  margin: 0 0 1.5rem;
}

.quiz-mode-card {
  display: block;
  width: 100%;
  text-align: left;
  padding: 1rem 1.125rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  cursor: pointer;
  font: inherit;
  color: var(--color-text);
  transition: border-color 0.15s, background 0.15s;
}

.quiz-mode-card:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
}

.quiz-mode-card-title {
  display: block;
  font-weight: 600;
  font-size: 0.9375rem;
}

.quiz-mode-card-desc {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.875rem;
  color: var(--color-muted);
  line-height: 1.5;
}

.quiz-options {
  display: grid;
  gap: 0.625rem;
  margin: 0 0 1.5rem;
}

.quiz-area {
  display: grid;
  gap: 1.25rem;
}

.quiz-area-section .quiz-options {
  margin-bottom: 0;
}

.quiz-area-label {
  font-weight: 600;
  font-size: 0.9375rem;
  margin: 0 0 0.75rem;
}

.quiz-option {
  display: block;
  width: 100%;
  text-align: left;
  padding: 1rem 1.125rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  cursor: pointer;
  font: inherit;
  color: var(--color-text);
  transition: border-color 0.15s, background 0.15s;
}

.quiz-option:hover {
  border-color: var(--color-accent);
}

.quiz-option.is-selected {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
}

.quiz-options--multiple .quiz-option.is-selected .quiz-option-label::after {
  content: ' ✓';
  font-weight: 700;
}

.quiz-options--invalid {
  padding: 0.375rem;
  border: 1px solid var(--color-error);
  border-radius: var(--radius);
  background: var(--color-error-bg);
}

.quiz-option-label {
  display: block;
  font-weight: 600;
  font-size: 0.9375rem;
}

.quiz-option-desc {
  display: block;
  margin-top: 0.2rem;
  font-size: 0.875rem;
  color: var(--color-muted);
  font-weight: 400;
}

.quiz-warn {
  margin-bottom: 1rem;
}

.quiz-nav {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.quiz-nav .btn {
  min-width: 7rem;
}

.quiz-review-list {
  margin: 1.25rem 0;
  padding: 0;
}

.quiz-review-list > div {
  display: grid;
  grid-template-columns: 7rem 1fr;
  gap: 0.5rem 1rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9375rem;
}

.quiz-review-list dt {
  margin: 0;
  color: var(--color-muted);
  font-weight: 600;
}

.quiz-review-list dd {
  margin: 0;
}

.quiz-summary {
  white-space: pre-wrap;
  font-family: inherit;
  font-size: 0.875rem;
  line-height: 1.7;
  background: var(--color-accent-soft);
  border-radius: var(--radius);
  padding: 1rem 1.125rem;
  margin: 1rem 0 0;
  overflow-x: auto;
}

.quiz-result-lead {
  color: var(--color-muted);
}

.quiz-result-note {
  font-size: 0.875rem;
  color: var(--color-muted);
  margin-top: 1.25rem;
}

@media (max-width: 520px) {
  .quiz-review-list > div {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }
}