* { box-sizing: border-box; }

html {
  min-width: 0;
  scroll-behavior: smooth;
  background: var(--paper);
}

body {
  min-width: 0;
  margin: 0;
  overflow-x: clip;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}

body[data-page] { padding-top: 5.5rem; }
body[data-page] main { min-height: 70svh; }

a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button, input, textarea, select { font: inherit; }
img { display: block; max-width: 100%; }
::selection { color: var(--navy); background: var(--pink); }

.skip-link {
  position: fixed;
  z-index: 1000;
  top: .75rem;
  left: .75rem;
  padding: .75rem 1rem;
  color: var(--navy);
  background: var(--paper-light);
  border: 2px solid var(--navy);
  transform: translateY(-160%);
  transition: transform var(--duration-fast) var(--ease-out);
}
.skip-link:focus { transform: translateY(0); }

.site-nav {
  position: fixed;
  z-index: 100;
  inset: 0 0 auto;
  display: grid;
  grid-template-columns: minmax(max-content, 1fr) auto minmax(max-content, 1fr);
  align-items: center;
  gap: clamp(1rem, 2.5vw, 3rem);
  min-height: 5.5rem;
  padding: .85rem clamp(1rem, 4vw, 4.5rem);
  color: var(--navy);
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.site-nav__brand {
  justify-self: start;
  font-size: clamp(.95rem, 1.25vw, 1.1rem);
  font-weight: 800;
  letter-spacing: -.025em;
  text-decoration: none;
  white-space: nowrap;
}
.site-nav__brand span { color: var(--pink-ink); font-weight: 650; }
.site-nav__links, .site-nav__actions {
  display: flex;
  align-items: center;
  gap: clamp(.75rem, 1.8vw, 1.6rem);
}
.site-nav__links { justify-content: center; }
.site-nav__actions { justify-content: flex-end; }
.site-nav__link, .text-action {
  position: relative;
  min-height: 2.75rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: .55rem .1rem;
  color: var(--navy);
  background: transparent;
  border: 0;
  text-decoration: none;
  font-size: .83rem;
  font-weight: 750;
  letter-spacing: .06em;
  cursor: pointer;
}
.site-nav__link::after {
  content: '';
  position: absolute;
  right: 0;
  bottom: .25rem;
  left: 0;
  height: 2px;
  background: var(--pink-ink);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-fast) var(--ease-out);
}
.site-nav__link[aria-current="page"]::after,
.site-nav__link:hover::after { transform: scaleX(1); }
.text-action { border-bottom: 1px solid currentColor; }

.site-nav a:hover, .site-nav button:hover, .site-footer a:hover, .site-footer button:hover,
.chapter-link:hover, .paper-button:hover, .interest-button:hover, .year-link:hover, .log-toggle:hover, .poster-button:hover {
  color: var(--pink-ink);
}

a:focus-visible, button:focus-visible, [tabindex]:focus-visible, summary:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 4px;
}

:where(a, button, [role="button"]):active { translate: 0 1px; }
button:disabled, a[aria-disabled="true"], [data-disabled="true"] {
  opacity: .46;
  cursor: not-allowed;
  pointer-events: none;
  filter: grayscale(.35);
}

.page-reveal {
  opacity: 0;
  transform: translateY(1.25rem);
  clip-path: inset(0 0 2.5rem 0);
  transition: opacity var(--duration-page) var(--ease-out), transform var(--duration-page) var(--ease-out), clip-path var(--duration-page) var(--ease-out);
}
body[data-page-ready="true"] .page-reveal { opacity: 1; transform: none; clip-path: inset(0); }

.page-hero {
  position: relative;
  isolation: isolate;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(17rem, .75fr);
  gap: clamp(2rem, 8vw, 8rem);
  align-items: end;
  min-height: min(42rem, calc(100svh - 5.5rem));
  padding: clamp(4rem, 9vw, 9rem) max(1rem, calc((100vw - var(--container)) / 2));
  overflow: hidden;
  color: var(--paper-light);
  background: var(--navy);
}
.page-hero::before {
  content: '';
  position: absolute;
  z-index: -1;
  inset: 0;
  opacity: .12;
  background-image: linear-gradient(90deg, transparent calc(25% - 1px), currentColor 25%, transparent calc(25% + 1px)), linear-gradient(90deg, transparent calc(75% - 1px), currentColor 75%, transparent calc(75% + 1px));
}
.page-hero__eyebrow, .section-kicker, .paper-label {
  margin: 0 0 1rem;
  font-size: .76rem;
  font-weight: 800;
  letter-spacing: .16em;
  text-transform: uppercase;
}
.page-hero h1 {
  max-width: 11ch;
  margin: 0;
  color: var(--pink);
  font-size: clamp(3.9rem, 8vw, 8.6rem);
  line-height: .93;
  letter-spacing: -.075em;
  text-wrap: balance;
}
.page-hero__lead {
  max-width: 34rem;
  margin: 2rem 0 0;
  color: rgba(255,255,255,.78);
  font-size: clamp(1rem, 1.6vw, 1.25rem);
  line-height: 1.75;
  text-wrap: pretty;
}
.identity-sheet {
  padding: clamp(1.5rem, 3vw, 2.5rem);
  color: var(--ink);
  background: var(--paper-light);
  box-shadow: var(--shadow-paper);
  transform: rotate(1.3deg);
}
.identity-sheet dl { margin: 0; }
.identity-sheet div { display: grid; grid-template-columns: 5.5rem 1fr; gap: 1rem; padding: .85rem 0; border-bottom: 1px solid var(--line); }
.identity-sheet div:last-child { border-bottom: 0; }
.identity-sheet dt { color: var(--ink-muted); font-size: .8rem; font-weight: 750; letter-spacing: .08em; }
.identity-sheet dd { margin: 0; font-weight: 700; line-height: 1.55; }

.content-section {
  width: min(calc(100% - 2rem), var(--container));
  margin-inline: auto;
  padding-block: clamp(4rem, 8vw, 8rem);
}
.content-section + .content-section { border-top: 1px solid var(--line); }
.section-heading { display: grid; grid-template-columns: minmax(0, 1fr) minmax(16rem, .65fr); gap: 2rem; align-items: end; margin-bottom: clamp(2.5rem, 5vw, 5rem); }
.section-heading h2 { max-width: 12ch; margin: 0; font-size: clamp(2.6rem, 5.5vw, 6rem); line-height: .98; letter-spacing: -.065em; text-wrap: balance; }
.section-heading p { max-width: 34rem; margin: 0; color: var(--ink-muted); line-height: 1.75; text-wrap: pretty; }

.paper-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(1rem, 2vw, 2rem); }
.paper-card {
  min-width: 0;
  padding: clamp(1.3rem, 2.5vw, 2.25rem);
  background: var(--paper-light);
  border: 1px solid rgba(32,40,64,.12);
  box-shadow: .35rem .45rem 0 var(--paper-shadow);
}
.paper-card h3 { margin: 0; font-size: clamp(1.3rem, 2vw, 1.8rem); letter-spacing: -.035em; }
.paper-card p { margin: 1rem 0 0; color: var(--ink-muted); line-height: 1.7; text-wrap: pretty; }
.placeholder-copy { color: var(--ink-muted); }
.placeholder-copy::before { content: '[素材 / 内容占位]'; display: block; margin-bottom: .65rem; color: var(--pink-ink); font-size: .68rem; font-weight: 800; letter-spacing: .12em; }

.media-placeholder {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 13rem;
  padding: 1.5rem;
  overflow: hidden;
  color: var(--ink-muted);
  background: repeating-linear-gradient(-45deg, rgba(32,40,64,.035) 0 10px, transparent 10px 20px), var(--paper-light);
  border: 1px dashed rgba(32,40,64,.34);
  text-align: center;
  line-height: 1.6;
}
.media-placeholder img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.media-placeholder__path { display: block; margin-top: .5rem; font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: .73rem; word-break: break-all; }

.site-footer {
  display: grid;
  grid-template-columns: 1.1fr .9fr auto;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: end;
  padding: clamp(3rem, 6vw, 6rem) max(1rem, calc((100vw - var(--container)) / 2));
  color: var(--paper-light);
  background: var(--navy);
}
.site-footer__statement { max-width: 28rem; margin: 0; color: var(--pink); font-size: clamp(1.7rem, 3.2vw, 3rem); font-weight: 800; line-height: 1.08; letter-spacing: -.045em; }
.site-footer__meta { display: grid; gap: .7rem; font-size: .85rem; line-height: 1.6; }
.site-footer__meta p { margin: 0; }
.site-footer__links { display: flex; flex-direction: column; align-items: flex-end; gap: .7rem; }
.site-footer a, .site-footer button { color: inherit; background: transparent; border: 0; text-decoration: underline; text-underline-offset: .25em; cursor: pointer; }
.site-credit { grid-column: 1 / -1; margin: 2rem 0 0; padding-top: 1rem; border-top: 1px solid rgba(255,255,255,.18); color: rgba(255,255,255,.6); font-size: .73rem; letter-spacing: .06em; }

.status-message { min-height: 1.4em; margin: .5rem 0 0; color: var(--success); font-size: .78rem; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

@media (max-width: 980px) {
  body[data-page] { padding-top: 8.3rem; }
  .site-nav { grid-template-columns: 1fr auto; align-items: center; }
  .site-nav__links { grid-column: 1 / -1; grid-row: 2; justify-content: flex-start; overflow-x: auto; scrollbar-width: none; }
  .site-nav__links::-webkit-scrollbar { display: none; }
  .site-nav__actions { justify-self: end; }
  .page-hero { min-height: auto; }
  .paper-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 700px) {
  body[data-page] { padding-top: 7.8rem; }
  .site-nav { gap: .35rem 1rem; min-height: 7.8rem; padding: .65rem 1rem; }
  .site-nav__brand { font-size: .9rem; }
  .site-nav__actions { gap: .65rem; }
  .site-nav__actions .text-action { font-size: .68rem; letter-spacing: .02em; }
  .site-nav__links { gap: 1.15rem; }
  .site-nav__link { min-height: 2.35rem; font-size: .76rem; }
  .page-hero { grid-template-columns: 1fr; gap: 3rem; padding: 4.5rem 1rem; }
  .page-hero h1 { font-size: clamp(3.5rem, 18vw, 5.4rem); }
  .identity-sheet { transform: rotate(.5deg); }
  .content-section { width: min(calc(100% - 2rem), var(--container)); }
  .section-heading { grid-template-columns: 1fr; }
  .paper-grid { grid-template-columns: 1fr; }
  .site-footer { grid-template-columns: 1fr; align-items: start; }
  .site-footer__links { align-items: flex-start; }
}

@media (max-width: 370px) {
  .site-nav__brand span { display: none; }
  .site-nav__actions { gap: .45rem; }
  .site-nav__actions .text-action { font-size: .63rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .page-reveal { opacity: 1; transform: none; clip-path: none; }
  :where(a, button, [role="button"]):active { translate: none; }
}

/* V1 public theme: a continuous navy canvas with local paper objects. */
html, body { color: var(--paper-light); background: var(--navy); }
html { overflow-x: clip; }
h1, h2, h3 { min-width: 0; overflow-wrap: anywhere; }
.site-nav { color: var(--paper-light); background: color-mix(in srgb, var(--navy) 94%, transparent); border-bottom-color: rgba(255,255,255,.16); }
.site-nav__brand span { color: var(--pink); }
.site-nav__link, .text-action { color: var(--paper-light); }
.site-nav__link::after { background: var(--pink); }
.site-nav a:hover, .site-nav button:hover, .site-footer a:hover, .site-footer button:hover { color: var(--pink); }
.page-reveal { opacity: 1; transform: none; clip-path: none; }
.page-hero { min-height: min(36rem, calc(100svh - 5.5rem)); align-items: center; padding-block: clamp(3rem, 6vw, 6rem); }
.page-hero h1 { font-size: clamp(3.7rem, 7vw, 7.2rem); }
.content-section + .content-section { border-top-color: rgba(255,255,255,.18); }
.section-heading p, .section-kicker { color: rgba(255,255,255,.72); }
.section-heading .section-kicker { color: var(--pink); }
.paper-card, .identity-sheet, .interest-note, .period-item, .log-entry { color: var(--ink); }
.placeholder-copy::before { display: none; }
.site-footer { border-top: 1px solid rgba(255,255,255,.18); }
.site-footer__statement { color: var(--pink); }
.site-nav__actions [hidden], .site-footer [hidden], .media-placeholder[hidden] { display: none !important; }
@media (max-width: 760px) {
  .year-rail { background: color-mix(in srgb, var(--navy) 94%, transparent); border-block-color: rgba(255,255,255,.18); }
}