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

:root {
  --ink: #232a45;
  --indigo: #2f4396;
  --indigo-dark: #1e2c66;
  --paper: #f7f8fc;
  --mist: #eceef7;
  --white: #ffffff;
  --line: #d8dcea;
  --muted: #5c6480;
  --accent: #b3382c;
  --accent-dark: #93291f;
  --radius: 16px;
  --shadow: 0 18px 44px rgba(30, 44, 102, 0.12);
  color: var(--ink);
  background: var(--paper);
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  font-size: 16px;
  line-height: 1.85;
}

a {
  color: inherit;
  text-decoration: none;
}

img,
svg {
  display: block;
}

h1,
h2,
.brand {
  font-family: "Zen Maru Gothic", "Hiragino Maru Gothic ProN", "Noto Sans JP", sans-serif;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  height: 72px;
  background: rgba(247, 248, 252, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.header-inner {
  max-width: 1160px;
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  font-weight: 900;
  letter-spacing: 0.04em;
  color: var(--ink);
}

.brand-mark {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--indigo);
  border-radius: 10px;
  font-family: "Noto Sans JP", sans-serif;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.06em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

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

.header-cta,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 44px;
  font-weight: 900;
  line-height: 1.2;
  border-radius: 999px;
  transition: transform 160ms ease, background 160ms ease, color 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.header-cta {
  padding: 10px 20px;
  color: #fff;
  background: var(--indigo);
  font-size: 14px;
}

.header-cta:hover {
  transform: translateY(-1px);
  background: var(--indigo-dark);
}

.btn-primary {
  color: #fff;
  background: var(--accent);
  padding: 16px 30px;
  box-shadow: 0 14px 30px rgba(179, 56, 44, 0.28);
}

.btn-primary:hover {
  transform: translateY(-1px);
  background: var(--accent-dark);
}

.btn-secondary {
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.55);
  background: rgba(255, 255, 255, 0.08);
  padding: 15px 24px;
}

.btn-secondary:hover {
  transform: translateY(-1px);
  border-color: #fff;
  background: rgba(255, 255, 255, 0.16);
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 118px 24px 100px;
  color: #eef1fb;
  background:
    radial-gradient(circle at 86% 12%, rgba(255, 255, 255, 0.12), transparent 30%),
    linear-gradient(135deg, var(--indigo-dark) 0%, var(--indigo) 100%);
}

.hero::after {
  content: "あ";
  position: absolute;
  right: -40px;
  bottom: -110px;
  color: rgba(255, 255, 255, 0.07);
  font-family: "Zen Maru Gothic", sans-serif;
  font-size: 420px;
  font-weight: 900;
  line-height: 1;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 1160px;
  margin: 0 auto;
}

.eyebrow {
  margin: 0 0 18px;
  color: #ffd9d2;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.22em;
}

.hero h1 {
  max-width: 720px;
  margin: 0;
  color: #fff;
  font-size: 52px;
  line-height: 1.4;
  font-weight: 900;
}

.hero-lead {
  max-width: 640px;
  margin: 28px 0 0;
  color: rgba(238, 241, 251, 0.88);
  font-size: 18px;
  padding-left: 20px;
  border-left: 4px solid rgba(255, 217, 210, 0.7);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 38px;
}

.hero-note {
  margin: 22px 0 0;
  color: rgba(238, 241, 251, 0.6);
  font-size: 13px;
}

.notice-band {
  background: #fdf3f1;
  border-bottom: 1px solid #f0d8d3;
}

.notice-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  color: #7a352c;
  font-size: 14px;
}

.notice-icon {
  width: 28px;
  height: 28px;
  flex: 0 0 28px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--accent);
  border-radius: 50%;
  font-weight: 900;
}

.section {
  padding: 84px 24px;
}

.section-mist {
  background: var(--mist);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-inner {
  max-width: 1160px;
  margin: 0 auto;
}

.section-kicker {
  margin: 0 0 10px;
  color: var(--indigo);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.24em;
}

.section-title {
  max-width: 760px;
  margin: 0;
  color: var(--ink);
  font-size: 34px;
  line-height: 1.5;
  font-weight: 900;
}

.section-copy {
  max-width: 720px;
  margin: 18px 0 0;
  color: var(--muted);
}

.index-head {
  padding: 84px 24px 40px;
}

.index-head .section-inner {
  max-width: 1160px;
}

.kana-nav {
  position: sticky;
  top: 72px;
  z-index: 50;
  background: rgba(247, 248, 252, 0.96);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.kana-nav-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  gap: 10px;
  overflow-x: auto;
  scrollbar-width: none;
}

.kana-nav-inner::-webkit-scrollbar {
  display: none;
}

.kana-nav a {
  flex: 0 0 auto;
  min-width: 52px;
  padding: 8px 0;
  text-align: center;
  color: var(--indigo);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: "Zen Maru Gothic", sans-serif;
  font-size: 18px;
  font-weight: 900;
  transition: background 160ms ease, color 160ms ease, border-color 160ms ease;
}

.kana-nav a:hover {
  color: #fff;
  background: var(--indigo);
  border-color: var(--indigo);
}

.kana-rows {
  padding: 24px 24px 84px;
}

.kana-row {
  max-width: 1160px;
  margin: 0 auto;
  padding: 44px 0;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 150px;
}

.kana-row:last-child {
  border-bottom: 0;
}

.kana-row-inner {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 40px;
  align-items: start;
}

.kana-side {
  position: sticky;
  top: 160px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}

.kana-letter {
  color: var(--indigo);
  font-family: "Zen Maru Gothic", sans-serif;
  font-size: 128px;
  font-weight: 900;
  line-height: 1;
}

.kana-label {
  display: inline-block;
  padding: 4px 14px;
  color: var(--indigo);
  background: var(--mist);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.14em;
}

.kana-terms {
  margin: 0;
  display: grid;
  gap: 16px;
}

.term {
  padding: 22px 26px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}

.term:hover {
  transform: translateY(-2px);
  border-color: rgba(47, 67, 150, 0.4);
  box-shadow: var(--shadow);
}

.term dt {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 6px;
  color: var(--ink);
  font-size: 19px;
  font-weight: 900;
}

.term dt .reading {
  color: var(--indigo);
  font-size: 13px;
  font-weight: 700;
}

.term dd {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.step-list {
  margin: 44px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  counter-reset: step;
}

.step-item {
  padding: 28px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.step-num {
  display: inline-block;
  margin-bottom: 14px;
  padding: 4px 14px;
  color: #fff;
  background: var(--indigo);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.16em;
}

.step-item h3 {
  margin: 0 0 8px;
  color: var(--ink);
  font-size: 19px;
  font-weight: 900;
  line-height: 1.5;
}

.step-item p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.step-item a {
  color: var(--indigo);
  text-decoration: underline;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 38px;
}

.faq-card,
.contact-card,
.legal-box {
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: var(--radius);
}

.faq-card {
  padding: 28px;
}

.faq-card h3 {
  margin: 0 0 10px;
  color: var(--indigo);
  font-size: 17px;
  font-weight: 900;
  line-height: 1.6;
}

.faq-card h3::before {
  content: "Q.";
  margin-right: 8px;
  color: var(--accent);
  font-family: "Zen Maru Gothic", sans-serif;
}

.faq-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.cta-section {
  padding: 84px 24px;
  color: #eef1fb;
  background:
    radial-gradient(circle at 12% 110%, rgba(255, 255, 255, 0.1), transparent 34%),
    linear-gradient(135deg, var(--indigo) 0%, var(--indigo-dark) 100%);
}

.cta-inner {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 28px;
  align-items: center;
}

.cta-inner h2 {
  margin: 0;
  color: #fff;
  font-size: 30px;
  line-height: 1.5;
  font-weight: 900;
}

.cta-inner p {
  margin: 12px 0 0;
  color: rgba(238, 241, 251, 0.75);
}

.cta-inner p a {
  color: #ffd9d2;
  text-decoration: underline;
}

.site-footer {
  padding: 48px 24px 40px;
  color: rgba(238, 241, 251, 0.6);
  background: var(--indigo-dark);
  font-size: 13px;
  border-top: 1px solid rgba(238, 241, 251, 0.12);
}

.footer-inner {
  max-width: 1160px;
  margin: 0 auto;
}

.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid rgba(238, 241, 251, 0.14);
}

.site-footer .brand {
  color: #fff;
}

.site-footer .brand-mark {
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.24);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
}

.footer-links a:hover {
  color: #ffd9d2;
}

.footer-meta {
  max-width: 940px;
  margin: 24px 0 0;
  color: rgba(238, 241, 251, 0.5);
  font-size: 12px;
  line-height: 1.9;
}

.footer-meta + .footer-meta {
  margin-top: 8px;
}

.footer-meta a {
  color: rgba(238, 241, 251, 0.72);
  text-decoration: underline;
}

.page-hero {
  padding: 80px 24px;
  color: #eef1fb;
  background:
    radial-gradient(circle at 84% 16%, rgba(255, 255, 255, 0.12), transparent 30%),
    linear-gradient(135deg, var(--indigo-dark) 0%, var(--indigo) 100%);
}

.page-hero-inner {
  max-width: 960px;
  margin: 0 auto;
}

.page-hero .eyebrow {
  color: #ffd9d2;
}

.page-hero h1 {
  margin: 0;
  color: #fff;
  font-size: 42px;
  line-height: 1.4;
  font-weight: 900;
}

.page-hero p {
  max-width: 640px;
  margin: 16px 0 0;
  color: rgba(238, 241, 251, 0.82);
}

.contact-main,
.legal-main {
  max-width: 900px;
  margin: 0 auto;
  padding: 56px 24px 82px;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 24px;
  color: var(--indigo);
  font-size: 14px;
  font-weight: 900;
}

.contact-card {
  padding: 30px;
  box-shadow: var(--shadow);
}

.info-list {
  display: grid;
}

.info-row {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 18px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.info-row:last-child {
  border-bottom: 0;
}

.info-label {
  color: var(--muted);
  font-size: 13px;
  font-weight: 900;
}

.info-value {
  color: var(--ink);
}

.email-button {
  width: 100%;
  margin-top: 24px;
}

.legal-box {
  margin-top: 22px;
  padding: 24px;
  background: var(--mist);
  border-color: var(--line);
}

.legal-box h2,
.legal-main h2 {
  margin: 0 0 12px;
  color: var(--ink);
  font-size: 22px;
  font-weight: 900;
}

.legal-box p,
.legal-main p,
.legal-main li {
  color: var(--muted);
  font-size: 15px;
}

.legal-box p {
  color: var(--ink);
}

.legal-main a {
  color: var(--indigo);
  text-decoration: underline;
}

.legal-main section {
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}

.legal-main ul {
  margin: 12px 0 0;
  padding-left: 20px;
}

@media (max-width: 980px) {
  .cta-inner {
    grid-template-columns: 1fr;
  }

  .kana-row-inner {
    grid-template-columns: 140px 1fr;
    gap: 24px;
  }

  .kana-letter {
    font-size: 92px;
  }

  .step-list {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 720px) {
  .site-header {
    height: auto;
  }

  .header-inner {
    min-height: 64px;
    padding: 10px 18px;
  }

  .nav-links {
    display: none;
  }

  .brand span:last-child {
    font-size: 14px;
  }

  .header-cta {
    padding: 10px 14px;
  }

  .kana-nav {
    top: 64px;
  }

  .hero {
    padding: 72px 18px 60px;
  }

  .hero::after {
    font-size: 240px;
    right: -24px;
    bottom: -64px;
  }

  .hero h1 {
    font-size: 32px;
  }

  .hero-lead {
    font-size: 16px;
  }

  .section,
  .index-head {
    padding: 58px 18px 36px;
  }

  .section-title,
  .cta-inner h2 {
    font-size: 26px;
  }

  .kana-nav-inner {
    padding: 10px 18px;
  }

  .kana-rows {
    padding: 8px 18px 62px;
  }

  .kana-row {
    padding: 34px 0;
    scroll-margin-top: 130px;
  }

  .kana-row-inner {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .kana-side {
    position: static;
    flex-direction: row;
    align-items: center;
    gap: 14px;
  }

  .kana-letter {
    font-size: 64px;
  }

  .term {
    padding: 18px 20px;
  }

  .notice-inner {
    padding: 16px 18px;
  }

  .footer-top {
    align-items: flex-start;
    flex-direction: column;
  }

  .page-hero {
    padding: 56px 18px;
  }

  .page-hero h1 {
    font-size: 30px;
  }

  .contact-main,
  .legal-main {
    padding: 38px 18px 62px;
  }

  .contact-card {
    padding: 22px;
  }

  .info-row {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}