:root {
  --navy-950: #081c2d;
  --navy-900: #0d2940;
  --navy-800: #123554;
  --blue-700: #1b5f8e;
  --blue-500: #3f8fbd;
  --blue-100: #dfeef6;
  --blue-50: #eff7fb;
  --slate-700: #415566;
  --slate-500: #6d7e8b;
  --slate-300: #cdd8df;
  --slate-200: #e3eaee;
  --slate-100: #f2f6f8;
  --white: #ffffff;
  --shell: 1180px;
  --serif: "Yu Mincho", "Hiragino Mincho ProN", "Noto Serif JP", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--navy-950);
  background: var(--white);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

p,
h1,
h2,
h3,
dl,
dd,
ol {
  margin: 0;
}

.shell {
  width: min(calc(100% - 48px), var(--shell));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 16px;
  color: var(--white);
  background: var(--navy-950);
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: relative;
  z-index: 10;
  border-bottom: 1px solid rgba(13, 41, 64, 0.12);
  background: rgba(255, 255, 255, 0.94);
}

.header-inner {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 1.08rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand strong,
.footer-brand strong {
  color: var(--blue-700);
  font-weight: 700;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--white);
  background: var(--navy-800);
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 700;
}

.header-status {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--slate-700);
  font-size: 0.8rem;
  font-weight: 650;
  letter-spacing: 0.04em;
}

.header-status span,
.status-label span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--blue-500);
  box-shadow: 0 0 0 5px rgba(63, 143, 189, 0.13);
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 104px 0 112px;
  background:
    linear-gradient(90deg, rgba(18, 53, 84, 0.045) 1px, transparent 1px) 0 0 / 84px 84px,
    linear-gradient(rgba(18, 53, 84, 0.045) 1px, transparent 1px) 0 0 / 84px 84px,
    linear-gradient(135deg, #f8fbfd 0%, var(--white) 58%, #edf6fa 100%);
}

.hero::after {
  content: "";
  position: absolute;
  width: 440px;
  height: 440px;
  right: -210px;
  top: -225px;
  border: 1px solid rgba(27, 95, 142, 0.18);
  border-radius: 50%;
  box-shadow: 0 0 0 70px rgba(63, 143, 189, 0.035), 0 0 0 140px rgba(63, 143, 189, 0.025);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.16fr) minmax(360px, 0.84fr);
  align-items: center;
  gap: clamp(64px, 9vw, 126px);
}

.eyebrow,
.section-kicker {
  color: var(--blue-700);
  font-size: 0.75rem;
  font-weight: 750;
  letter-spacing: 0.18em;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 28px;
}

.eyebrow span {
  padding: 4px 9px;
  border: 1px solid var(--slate-300);
  color: var(--slate-500);
  background: rgba(255, 255, 255, 0.72);
  font-size: 0.64rem;
  letter-spacing: 0.1em;
}

h1,
h2 {
  font-family: var(--serif);
  font-weight: 600;
  letter-spacing: -0.055em;
}

h1 {
  max-width: 700px;
  font-size: clamp(2.75rem, 5.4vw, 5.2rem);
  line-height: 1.25;
}

h1 em {
  position: relative;
  display: inline-block;
  color: var(--blue-700);
  font-style: normal;
  white-space: nowrap;
}

h1 em::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -8px;
  height: 3px;
  background: linear-gradient(90deg, var(--blue-500), rgba(63, 143, 189, 0));
}

.hero-lead {
  max-width: 610px;
  margin-top: 34px;
  color: var(--slate-700);
  font-size: 1.05rem;
  line-height: 2;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 34px;
}

.hero-tags span {
  padding: 7px 14px;
  border: 1px solid var(--slate-200);
  border-radius: 999px;
  color: var(--slate-700);
  background: rgba(255, 255, 255, 0.82);
  font-size: 0.78rem;
  font-weight: 650;
}

.guide-card {
  position: relative;
  padding: 30px;
  border: 1px solid rgba(13, 41, 64, 0.13);
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 28px 80px rgba(8, 28, 45, 0.12);
}

.guide-card::before {
  content: "";
  position: absolute;
  inset: 8px;
  border: 1px solid rgba(27, 95, 142, 0.08);
  pointer-events: none;
}

.guide-card-head,
.guide-intro,
.profile-list div {
  display: flex;
  justify-content: space-between;
  gap: 20px;
}

.guide-card-head {
  position: relative;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--slate-200);
  color: var(--slate-500);
  font-size: 0.66rem;
  font-weight: 750;
  letter-spacing: 0.15em;
}

.guide-intro {
  align-items: flex-end;
  padding: 30px 0 24px;
}

.guide-intro p {
  font-family: var(--serif);
  font-size: 1.4rem;
  line-height: 1.7;
}

.guide-intro strong {
  color: var(--blue-700);
  font-weight: 600;
}

.guide-number {
  color: var(--blue-100);
  font-family: var(--serif);
  font-size: 4.4rem;
  line-height: 0.8;
}

.profile-list {
  border-top: 1px solid var(--navy-900);
}

.profile-list div {
  padding: 13px 0;
  border-bottom: 1px solid var(--slate-200);
}

.profile-list dt {
  font-size: 0.82rem;
  font-weight: 700;
}

.profile-list dd {
  color: var(--slate-500);
  font-size: 0.78rem;
}

.guide-note {
  margin-top: 20px;
  color: var(--slate-500);
  font-size: 0.75rem;
  line-height: 1.75;
}

.section {
  padding: 112px 0;
}

.section-kicker {
  margin-bottom: 18px;
}

h2 {
  font-size: clamp(2rem, 3.8vw, 3.5rem);
  line-height: 1.35;
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(300px, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(60px, 10vw, 150px);
}

.about-copy {
  padding-top: 32px;
  border-top: 1px solid var(--navy-900);
  color: var(--slate-700);
  font-size: 1rem;
}

.about-copy p + p {
  margin-top: 20px;
}

.comparison {
  background: var(--slate-100);
}

.section-heading {
  display: grid;
  grid-template-columns: 1fr minmax(280px, 0.52fr);
  align-items: end;
  gap: 60px;
  margin-bottom: 54px;
}

.section-heading > p {
  padding-left: 26px;
  border-left: 2px solid var(--blue-500);
  color: var(--slate-700);
}

.comparison-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--slate-300);
  border-left: 1px solid var(--slate-300);
  list-style: none;
  padding: 0;
}

.comparison-grid li {
  min-height: 210px;
  padding: 25px;
  border-right: 1px solid var(--slate-300);
  border-bottom: 1px solid var(--slate-300);
  background: rgba(255, 255, 255, 0.45);
}

.comparison-grid span,
.category-list article > span {
  display: block;
  margin-bottom: 40px;
  color: var(--blue-700);
  font-size: 0.68rem;
  font-weight: 750;
  letter-spacing: 0.12em;
}

.comparison-grid strong {
  display: block;
  margin-bottom: 8px;
  font-family: var(--serif);
  font-size: 1.15rem;
}

.comparison-grid p,
.category-list p {
  color: var(--slate-500);
  font-size: 0.78rem;
  line-height: 1.7;
}

.categories {
  background: var(--white);
}

.category-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.category-list article {
  position: relative;
  min-height: 260px;
  padding: 32px;
  overflow: hidden;
  border: 1px solid var(--slate-200);
  background: linear-gradient(140deg, var(--white), var(--blue-50));
}

.category-list article::after {
  content: "";
  position: absolute;
  width: 190px;
  height: 190px;
  right: -80px;
  bottom: -105px;
  border: 1px solid rgba(27, 95, 142, 0.15);
  border-radius: 50%;
}

.category-list article > span {
  margin-bottom: 46px;
}

.category-list h3 {
  margin-bottom: 9px;
  font-family: var(--serif);
  font-size: 1.55rem;
  font-weight: 600;
}

.category-list small {
  position: absolute;
  right: 28px;
  bottom: 24px;
  z-index: 1;
  color: var(--slate-500);
  font-size: 0.62rem;
  font-weight: 750;
  letter-spacing: 0.16em;
}

.status-section {
  padding-top: 18px;
}

.status-panel {
  position: relative;
  overflow: hidden;
  padding: 72px clamp(30px, 8vw, 100px);
  color: var(--white);
  background: var(--navy-900);
}

.status-panel::after {
  content: "";
  position: absolute;
  width: 420px;
  height: 420px;
  right: -140px;
  top: -230px;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 50%;
  box-shadow: 0 0 0 80px rgba(255, 255, 255, 0.025), 0 0 0 160px rgba(255, 255, 255, 0.018);
}

.status-label {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 26px;
  color: var(--blue-100);
  font-size: 0.7rem;
  font-weight: 750;
  letter-spacing: 0.16em;
}

.status-panel h2 {
  position: relative;
  z-index: 1;
  max-width: 720px;
  color: var(--white);
}

.status-nowrap {
  white-space: nowrap;
}

.status-panel > p:last-child {
  position: relative;
  z-index: 1;
  max-width: 630px;
  margin-top: 26px;
  color: #c9d9e3;
}

.site-footer {
  padding: 36px 0;
  color: var(--slate-500);
  background: var(--white);
  font-size: 0.78rem;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.footer-brand {
  color: var(--navy-950);
  font-size: 1rem;
}

@media (max-width: 920px) {
  .hero {
    padding: 84px 0 92px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 64px;
  }

  .guide-card {
    width: min(100%, 560px);
  }

  .about-grid,
  .section-heading {
    grid-template-columns: 1fr;
    gap: 38px;
  }

  .about-copy {
    padding-top: 26px;
  }

  .section-heading > p {
    max-width: 620px;
  }

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

@media (max-width: 620px) {
  .shell {
    width: min(calc(100% - 32px), var(--shell));
  }

  .header-inner {
    min-height: 70px;
  }

  .header-status {
    max-width: 105px;
    font-size: 0.68rem;
    line-height: 1.4;
  }

  .hero {
    padding: 68px 0 72px;
  }

  .eyebrow {
    align-items: flex-start;
    flex-direction: column;
    gap: 9px;
  }

  h1 {
    font-size: clamp(1.95rem, 9.2vw, 2.8rem);
  }

  h1 > span {
    white-space: nowrap;
  }

  .hero-lead {
    font-size: 1rem;
    line-height: 1.9;
  }

  .guide-card {
    padding: 24px;
  }

  .section {
    padding: 78px 0;
  }

  .section-heading {
    margin-bottom: 38px;
  }

  .section-heading > p {
    padding-left: 18px;
  }

  .comparison-grid,
  .category-list {
    grid-template-columns: 1fr;
  }

  .comparison-grid li {
    min-height: 178px;
  }

  .status-section {
    padding-top: 0;
  }

  .status-panel {
    padding: 52px 25px;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}