:root {
  color-scheme: light dark;

  --paper: #f4f1ea;
  --paper-tint: #ece7da;
  --ink: #0d1424;
  --ink-soft: #2b3349;
  --ink-mute: #5a6379;
  --rule-soft: rgba(28, 37, 64, 0.18);
  --accent: #1d4ed8;
  --accent-deep: #0c1e4a;
  --accent-pale: #d9e2f6;
  --accent-line: #b0c1e6;

  --serif: "Noto Serif JP", "Hiragino Mincho ProN", "YuMincho", serif;
  --sans: "Noto Sans JP", "Hiragino Sans", "YuGothic", sans-serif;
  --display: "Cormorant Garamond", "Noto Serif JP", serif;

  --measure: 38rem;
  --wide: 76rem;
  --gutter: clamp(20px, 5vw, 56px);

  --easing: cubic-bezier(0.22, 1, 0.36, 1);
  --nav-h: 64px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #070d1c;
    --paper-tint: #0d1528;
    --ink: #e9edf6;
    --ink-soft: #c4cbdc;
    --ink-mute: #8b94ad;
    --rule-soft: rgba(196, 203, 220, 0.16);
    --accent: #7ea4f5;
    --accent-deep: #c4d6fb;
    --accent-pale: #14213e;
    --accent-line: #2a3a64;
  }
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.85;
  font-feature-settings: "palt" 1;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color 320ms var(--easing), color 320ms var(--easing);
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
button { font: inherit; }

::selection { background: var(--accent); color: var(--paper); }

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: 2px;
}

.skip {
  position: fixed;
  left: 12px;
  top: -100px;
  z-index: 100;
  padding: 8px 14px;
  background: var(--ink);
  color: var(--paper);
  font-size: 14px;
}
.skip:focus { top: 12px; }

.progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0;
  background: var(--accent);
  z-index: 60;
  transition: width 60ms linear;
  pointer-events: none;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--gutter);
  border-bottom: 1px solid var(--rule-soft);
  transition: border-color 320ms var(--easing);
}
.nav::before {
  content: "";
  position: absolute;
  inset: 0;
  background: color-mix(in oklab, var(--paper) 88%, transparent);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  z-index: -1;
  transition: background-color 320ms var(--easing);
}
.nav > * { position: relative; }

.nav-brand {
  display: flex;
  align-items: baseline;
  gap: 14px;
  font-family: var(--serif);
}
.nav-name {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.nav-role {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--ink-mute);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 13px;
  letter-spacing: 0.06em;
}
.nav-menu a {
  color: var(--ink-mute);
  position: relative;
  transition: color 180ms var(--easing);
  padding: 6px 0;
}
.nav-menu a:hover,
.nav-menu a[aria-current="page"] {
  color: var(--ink);
}
.nav-menu a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 1px;
  background: var(--accent);
}

.nav-burger {
  display: none;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  cursor: pointer;
  position: relative;
  color: var(--ink);
}
.nav-burger span {
  position: absolute;
  left: 8px;
  right: 8px;
  height: 1.5px;
  background: currentColor;
  transition: transform 240ms var(--easing), opacity 180ms var(--easing), top 240ms var(--easing);
}
.nav-burger span:nth-child(1) { top: 14px; }
.nav-burger span:nth-child(2) { top: 19px; }
.nav-burger span:nth-child(3) { top: 24px; }
.nav-burger[aria-expanded="true"] span:nth-child(1) { top: 19px; transform: rotate(45deg); }
.nav-burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-burger[aria-expanded="true"] span:nth-child(3) { top: 19px; transform: rotate(-45deg); }

@media (max-width: 860px) {
  .nav-role { display: none; }
  .nav-burger { display: block; }
  .nav-menu {
    position: fixed;
    inset: var(--nav-h) 0 0 0;
    background: var(--paper);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 24px var(--gutter) 40px;
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: transform 280ms var(--easing), opacity 200ms var(--easing);
    border-bottom: 1px solid var(--rule-soft);
    overflow-y: auto;
  }
  .nav-menu.is-open {
    transform: none;
    opacity: 1;
    pointer-events: auto;
  }
  .nav-menu a {
    font-family: var(--serif);
    font-size: 22px;
    font-weight: 600;
    color: var(--ink);
    padding: 18px 0;
    border-bottom: 1px solid var(--rule-soft);
    letter-spacing: 0.02em;
  }
  .nav-menu a[aria-current="page"]::after { display: none; }
  .nav-menu a[aria-current="page"] {
    color: var(--accent);
  }
}

body.is-menu-open { overflow: hidden; }

.hero {
  position: relative;
  min-height: calc(100svh - var(--nav-h));
  display: grid;
  align-items: end;
  overflow: hidden;
  background: #1a3a78;
}
.hero-image {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 72% 8%;
  opacity: 1;
}
@media (min-width: 720px) {
  .hero-image img { object-position: 68% 10%; }
}
@media (min-width: 1100px) {
  .hero-image img { object-position: 68% 10%; }
}
.hero-image::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.05) 0%, rgba(26, 58, 120, 0) 25%, rgba(12, 30, 74, 0.7) 100%),
    linear-gradient(90deg, rgba(12, 30, 74, 0.55) 0%, rgba(12, 30, 74, 0.15) 50%, rgba(12, 30, 74, 0) 70%);
}
@media (prefers-color-scheme: dark) {
  .hero { background: #0e2554; }
  .hero-image img { filter: brightness(0.95); }
  .hero-image::after {
    background:
      linear-gradient(180deg, rgba(255, 255, 255, 0.04) 0%, rgba(14, 37, 84, 0) 25%, rgba(7, 13, 28, 0.72) 100%),
      linear-gradient(90deg, rgba(7, 13, 28, 0.58) 0%, rgba(7, 13, 28, 0.18) 50%, rgba(7, 13, 28, 0) 70%);
  }
}

.hero-content {
  position: relative;
  z-index: 1;
  width: 100%;
  padding: 0 var(--gutter) clamp(56px, 12vh, 140px);
  color: #f8f6ee;
}
@media (min-width: 1100px) {
  .hero-content {
    max-width: 52%;
    padding-left: clamp(32px, 6vw, 120px);
  }
}
.hero-eyebrow {
  font-size: 12px;
  letter-spacing: 0.28em;
  color: rgba(248, 246, 238, 0.72);
  margin: 0 0 10px;
  white-space: nowrap;
}
.hero-slogan {
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(38px, 5.5vw, 72px);
  line-height: 1.08;
  letter-spacing: 0.02em;
  margin: 0 0 32px;
  text-wrap: balance;
}
.hero-slogan .accent {
  color: #b8d2ff;
}
.hero-meta {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
  padding-top: 28px;
  border-top: 1px solid rgba(248, 246, 238, 0.25);
}
.hero-name {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(26px, 4.2vw, 44px);
  letter-spacing: 0.06em;
  margin: 0;
}
.hero-name small {
  display: block;
  font-family: var(--sans);
  font-weight: 400;
  font-size: 12px;
  letter-spacing: 0.3em;
  color: rgba(248, 246, 238, 0.65);
  margin-top: 8px;
}
.hero-stats {
  display: flex;
  gap: clamp(20px, 4vw, 36px);
}
.hero-stat-num {
  font-family: var(--display);
  font-style: italic;
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1;
  color: #b8d2ff;
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
}
.hero-stat-num .kanji {
  font-family: var(--serif);
  font-style: normal;
  font-weight: 600;
  font-size: 0.5em;
  color: rgba(248, 246, 238, 0.78);
  letter-spacing: 0;
  margin-left: 1px;
}
.hero-stat-label {
  display: block;
  font-size: 11px;
  letter-spacing: 0.22em;
  color: rgba(248, 246, 238, 0.6);
  margin-top: 4px;
}

@media (max-width: 720px) {
  .hero-meta { flex-direction: column; align-items: flex-start; gap: 24px; }
}

.home-preview {
  padding: clamp(80px, 12vw, 140px) 0;
}
.home-preview-head {
  max-width: var(--wide);
  margin: 0 auto;
  padding: 0 var(--gutter);
  margin-bottom: clamp(48px, 7vw, 80px);
}
.section-eyebrow {
  font-size: 11px;
  letter-spacing: 0.32em;
  color: var(--ink-mute);
  margin: 0 0 14px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.section-eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--accent);
}
.section-title {
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1.4;
  margin: 0;
  letter-spacing: 0.01em;
  text-wrap: balance;
}
.section-lede {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(17px, 1.8vw, 21px);
  line-height: 1.85;
  color: var(--ink-soft);
  margin: 24px 0 0;
  max-width: 56rem;
  text-wrap: pretty;
}

.preview-list {
  list-style: none;
  max-width: var(--wide);
  margin: 0 auto;
  padding: 0 var(--gutter);
  border-top: 1px solid var(--rule-soft);
}
.preview-list > li { border-bottom: 1px solid var(--rule-soft); }
.preview-item {
  display: block;
  position: relative;
  padding: clamp(26px, 3.5vw, 40px) 0;
  transition: padding-left 280ms var(--easing);
}
.preview-item:hover { padding-left: 10px; }
.preview-item-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
}
.preview-key {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(22px, 3vw, 34px);
  color: var(--ink);
  letter-spacing: 0.02em;
  line-height: 1.3;
}
.preview-summary {
  margin: 8px 0 0;
  color: var(--ink-mute);
  font-size: clamp(14px, 1.2vw, 15.5px);
  line-height: 1.85;
  max-width: 60ch;
  text-wrap: pretty;
}
.preview-arrow {
  flex: 0 0 auto;
  color: var(--ink-mute);
  font-size: 22px;
  transition: transform 240ms var(--easing), color 240ms var(--easing);
  line-height: 1;
}
.preview-item:hover .preview-arrow {
  color: var(--accent);
  transform: translateX(6px);
}

.page-hero {
  padding: clamp(72px, 11vw, 140px) var(--gutter) clamp(48px, 7vw, 80px);
  max-width: 60rem;
  margin: 0 auto;
}
.page-hero-title {
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(30px, 4.4vw, 56px);
  line-height: 1.45;
  margin: 18px 0 28px;
  letter-spacing: 0.02em;
  text-wrap: pretty;
  word-break: keep-all;
  overflow-wrap: break-word;
  max-width: 30ch;
  color: var(--ink);
}
.nowrap { white-space: nowrap; }
.page-hero-lede {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(17px, 1.6vw, 20px);
  line-height: 1.95;
  color: var(--ink-soft);
  max-width: 50rem;
  text-wrap: pretty;
  margin: 0;
  letter-spacing: 0.02em;
}
.phrase-nowrap {
  white-space: nowrap;
}

.article {
  padding: clamp(40px, 6vw, 80px) var(--gutter) clamp(80px, 12vw, 140px);
}
.article-inner {
  max-width: 44rem;
  margin: 0 auto;
}
.article-body {
  font-size: clamp(16.5px, 1.4vw, 18.5px);
  line-height: 2;
  color: var(--ink-soft);
  letter-spacing: 0.025em;
  font-feature-settings: "palt" 1;
  word-break: auto-phrase;
  line-break: strict;
  hanging-punctuation: allow-end;
}
.article-body p {
  margin: 0 0 1.75em;
  text-wrap: pretty;
}
.article-body p:first-of-type {
  font-size: 1.06em;
  color: var(--ink);
  font-weight: 500;
  margin-bottom: 2em;
  line-height: 1.95;
}
.article-body em.mark {
  font-style: normal;
  background: linear-gradient(transparent 68%, var(--accent-pale) 68%);
  padding: 0 2px;
  color: var(--ink);
  font-weight: 600;
}

.pull {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(19px, 2.4vw, 26px);
  line-height: 1.85;
  color: var(--ink);
  max-width: 100%;
  margin: clamp(56px, 8vw, 88px) 0;
  padding: 28px 32px;
  border-left: 3px solid var(--accent);
  background: var(--paper-tint);
  text-wrap: pretty;
  letter-spacing: 0.02em;
}
.pull cite {
  display: block;
  margin-top: 14px;
  font-family: var(--sans);
  font-style: normal;
  font-weight: 400;
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--ink-mute);
}

.figure {
  margin: clamp(40px, 6vw, 72px) auto;
  max-width: 60rem;
}
.figure-image {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--paper-tint);
}
.figure-image img {
  width: 100%; height: 100%; object-fit: cover;
}
.figure figcaption {
  margin-top: 12px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--ink-mute);
  text-align: right;
}

body[data-page="blue"] {
  --paper: #0c1e4a;
  --paper-tint: #14264f;
  --ink: #ffffff;
  --ink-soft: rgba(241, 243, 251, 0.88);
  --ink-mute: rgba(241, 243, 251, 0.6);
  --rule-soft: rgba(241, 243, 251, 0.18);
  --accent: #b8d2ff;
  --accent-pale: rgba(184, 210, 255, 0.16);
  background: var(--paper);
}
@media (prefers-color-scheme: dark) {
  body[data-page="blue"] {
    --paper: #050a17;
    --paper-tint: #0a142a;
  }
}
body[data-page="blue"] ::selection { color: #0c1e4a; }

.profile-grid {
  max-width: var(--wide);
  margin: 0 auto;
  padding: clamp(40px, 6vw, 80px) var(--gutter) clamp(80px, 12vw, 140px);
  display: grid;
  grid-template-columns: minmax(280px, 1fr) 2fr;
  gap: clamp(32px, 6vw, 80px);
  align-items: start;
}
@media (max-width: 860px) {
  .profile-grid { grid-template-columns: 1fr; }
}
.profile-photo {
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background: var(--paper-tint);
}
.profile-photo img {
  width: 100%; height: 100%; object-fit: cover;
  filter: contrast(1.02);
}
.profile-photo::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid var(--rule-soft);
  pointer-events: none;
}
.profile-caption {
  margin-top: 14px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--ink-mute);
}

.timeline {
  position: relative;
  padding-left: 24px;
  margin: 0;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--rule-soft);
}
.timeline ul { padding: 0; margin: 0; list-style: none; }
.timeline li {
  position: relative;
  padding: 14px 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: baseline;
}
.timeline li::before {
  content: "";
  position: absolute;
  left: -28px;
  top: 24px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--paper);
  border: 1px solid var(--accent);
}
.timeline li.is-key::before { background: var(--accent); }
.timeline-when {
  font-family: var(--display);
  font-style: italic;
  font-size: 22px;
  color: var(--accent);
}
.timeline-what {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 17px;
  color: var(--ink);
}
.timeline-what small {
  display: block;
  font-family: var(--sans);
  font-weight: 400;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ink-mute);
  margin-top: 4px;
}
@media (max-width: 540px) {
  .timeline li { grid-template-columns: 1fr; gap: 4px; }
  .timeline-what { font-size: 16px; }
}

.contact-section {
  padding: clamp(80px, 14vw, 160px) var(--gutter);
  background: var(--paper-tint);
  border-top: 1px solid var(--rule-soft);
}
.contact-inner {
  max-width: var(--wide);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 6vw, 96px);
  align-items: start;
}
@media (max-width: 760px) {
  .contact-inner { grid-template-columns: 1fr; }
}
.contact-headline {
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(30px, 5vw, 48px);
  line-height: 1.4;
  margin: 0 0 24px;
  text-wrap: balance;
}
.contact-lede {
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 2;
  max-width: 32rem;
}
.contact-list {
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 1px solid var(--rule-soft);
}
.contact-list li { border-bottom: 1px solid var(--rule-soft); }
.contact-list a {
  display: grid;
  grid-template-columns: 110px 1fr auto;
  gap: 24px;
  align-items: center;
  padding: 22px 0;
  transition: padding 240ms var(--easing);
}
.contact-list a:hover { padding-left: 8px; }
.contact-key {
  font-size: 11px;
  letter-spacing: 0.28em;
  color: var(--ink-mute);
}
.contact-val {
  font-family: var(--serif);
  font-size: clamp(15px, 2vw, 18px);
  color: var(--ink);
  word-break: break-word;
}
.contact-arrow {
  color: var(--ink-mute);
  font-size: 18px;
  transition: transform 220ms var(--easing), color 220ms var(--easing);
}
.contact-list a:hover .contact-arrow {
  color: var(--accent);
  transform: translateX(6px);
}
@media (max-width: 540px) {
  .contact-list a { grid-template-columns: 84px 1fr auto; gap: 16px; }
}

.contact-form {
  display: grid;
  gap: 22px;
  margin-top: 8px;
}
.field {
  display: grid;
  gap: 8px;
}
.field span {
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--ink-mute);
}
.field input,
.field textarea {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--rule-soft);
  padding: 10px 0;
  color: var(--ink);
  font: inherit;
  font-size: 16px;
  line-height: 1.6;
  transition: border-color 200ms var(--easing);
  font-family: inherit;
}
.field input:focus,
.field textarea:focus {
  outline: none;
  border-bottom-color: var(--accent);
}
.field textarea {
  resize: vertical;
  min-height: 140px;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 28px;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.18em;
  border: none;
  cursor: pointer;
  transition: background-color 200ms var(--easing), transform 200ms var(--easing);
  align-self: start;
}
.btn:hover {
  background: var(--accent);
  transform: translateY(-1px);
}

.footer {
  padding: 56px var(--gutter) 40px;
  background: var(--paper);
  color: var(--ink-mute);
  font-size: 12px;
  letter-spacing: 0.12em;
}
.footer-inner {
  max-width: var(--wide);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 32px;
  align-items: start;
  border-top: 1px solid var(--rule-soft);
  padding-top: 36px;
}
@media (max-width: 760px) {
  .footer-inner { grid-template-columns: 1fr; gap: 24px; }
}
.footer-mark {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.06em;
  margin: 0 0 6px;
}
.footer-block p { margin: 4px 0; }
.footer-nav {
  display: grid;
  gap: 8px;
}
.footer-nav a {
  color: var(--ink-mute);
  transition: color 180ms var(--easing);
}
.footer-nav a:hover { color: var(--ink); }
.footer-bottom {
  max-width: var(--wide);
  margin: 24px auto 0;
  padding-top: 18px;
  border-top: 1px solid var(--rule-soft);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.reveal {
  opacity: 1;
}
.reveal.is-animate {
  animation: revealRise 700ms var(--easing) both;
}
@keyframes revealRise {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: none; }
}

main {
  animation: pageEnter 580ms var(--easing) both;
}
@keyframes pageEnter {
  0% { opacity: 0; transform: translateY(16px); filter: blur(2px); }
  100% { opacity: 1; transform: none; filter: blur(0); }
}
body.is-leaving main {
  animation: pageLeave 240ms ease-in forwards;
}
@keyframes pageLeave {
  to { opacity: 0; transform: translateY(-10px); filter: blur(2px); }
}

@view-transition { navigation: auto; }
::view-transition-old(root) { animation: pageFadeOut 220ms ease-in both; }
::view-transition-new(root) { animation: pageFadeIn 360ms cubic-bezier(0.22, 1, 0.36, 1) both; }
@keyframes pageFadeOut { to { opacity: 0; transform: translateY(-8px); } }
@keyframes pageFadeIn  { from { opacity: 0; transform: translateY(14px); filter: blur(2px); } to { opacity: 1; transform: none; filter: blur(0); } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}

@media print {
  .nav, .progress, .nav-burger { display: none !important; }
  body { color: #000; background: #fff; }
}