:root {
  --forest-950: #101c18;
  --forest-900: #172720;
  --forest-800: #21372d;
  --forest-700: #2d4c3d;
  --sage: #7d9a83;
  --sage-pale: #dce5d9;
  --paper: #f4f0e5;
  --paper-light: #fbf8f0;
  --paper-deep: #e9e2d2;
  --ink: #26312b;
  --ink-soft: #5b675f;
  --gold: #866329;
  --gold-light: #d5bd82;
  --accent: #9a5f45;
  --accent-soft: rgba(154, 95, 69, .13);
  --line: rgba(79, 100, 87, .23);
  --shadow: 0 22px 70px rgba(16, 28, 24, .13);
  --serif: "Yu Mincho", "Hiragino Mincho ProN", "Hiragino Mincho Pro", "Noto Serif JP", serif;
  --sans: "Hiragino Sans", "Yu Gothic UI", "Yu Gothic", Meiryo, sans-serif;
  --reading: 48rem;
}

.year-2026 { --accent: #9a5f45; --accent-soft: rgba(154, 95, 69, .13); }
.year-2027 { --accent: #8f5b63; --accent-soft: rgba(143, 91, 99, .13); }
.year-2028 { --accent: #866329; --accent-soft: rgba(134, 99, 41, .14); }
.year-2029 { --accent: #35655e; --accent-soft: rgba(53, 101, 94, .13); }
.year-2030 { --accent: #684c66; --accent-soft: rgba(104, 76, 102, .13); }

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 4rem;
  background: var(--forest-950);
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 5%, rgba(213, 189, 130, .1), transparent 23rem),
    linear-gradient(180deg, var(--forest-950) 0 38rem, var(--paper) 38rem 100%);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 2;
  letter-spacing: .025em;
  -webkit-text-size-adjust: 100%;
}

a {
  color: var(--forest-700);
  text-decoration-thickness: 1px;
  text-underline-offset: .2em;
}

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

a:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--gold-light);
  outline-offset: 4px;
  border-radius: 3px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: .75rem;
  left: .75rem;
  padding: .6rem 1rem;
  color: var(--forest-950);
  background: var(--paper-light);
  border-radius: 999px;
  transform: translateY(-180%);
  transition: transform .2s ease;
}

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

.hero {
  position: relative;
  min-height: 36rem;
  overflow: hidden;
  color: var(--paper);
  isolation: isolate;
}

.hero::before,
.hero::after {
  position: absolute;
  z-index: -2;
  content: "";
  border-radius: 50%;
}

.hero::before {
  width: 30rem;
  height: 30rem;
  top: 2rem;
  right: -9rem;
  border: 1px solid rgba(213, 189, 130, .2);
  box-shadow: 0 0 0 4rem rgba(213, 189, 130, .025), 0 0 0 9rem rgba(213, 189, 130, .018);
}

.hero::after {
  width: 24rem;
  height: 24rem;
  left: -15rem;
  bottom: 0;
  background: var(--accent-soft);
}

.star-field {
  position: absolute;
  z-index: -1;
  inset: 0;
  opacity: .6;
  background-image:
    radial-gradient(circle at 12% 24%, #fff 0 1px, transparent 1.5px),
    radial-gradient(circle at 24% 60%, var(--gold-light) 0 1px, transparent 1.5px),
    radial-gradient(circle at 38% 16%, #fff 0 1px, transparent 1.5px),
    radial-gradient(circle at 55% 37%, #fff 0 1px, transparent 1.5px),
    radial-gradient(circle at 67% 11%, var(--gold-light) 0 1px, transparent 1.5px),
    radial-gradient(circle at 78% 56%, #fff 0 1px, transparent 1.5px),
    radial-gradient(circle at 91% 24%, #fff 0 1px, transparent 1.5px);
  background-size: 19rem 17rem, 23rem 21rem, 29rem 25rem, 31rem 29rem, 37rem 31rem, 41rem 37rem, 43rem 41rem;
}

.site-nav {
  position: relative;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  gap: .55rem;
  width: min(100% - 2rem, 72rem);
  margin-inline: auto;
  padding-top: 1.2rem;
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  padding: .34rem .78rem;
  color: var(--sage-pale);
  border: 1px solid rgba(220, 229, 217, .25);
  border-radius: 999px;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .07em;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: #fff;
  border-color: var(--gold-light);
  background: rgba(255, 255, 255, .06);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(16rem, .65fr);
  align-items: center;
  gap: 3.5rem;
  width: min(100% - 3rem, 67rem);
  min-height: 31rem;
  margin-inline: auto;
  padding: 3rem 0 5rem;
}

.eyebrow,
.section-kicker,
.field-label {
  color: var(--gold-light);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
}

.eyebrow { margin: 0 0 1rem; }

h1,
h2,
h3,
h4 {
  font-family: var(--serif);
  font-weight: 500;
  line-height: 1.45;
  text-wrap: balance;
}

h1 {
  margin: 0;
  font-size: clamp(2.7rem, 7vw, 5.5rem);
  letter-spacing: -.05em;
}

.year-number {
  display: block;
  margin-top: .15em;
  color: var(--gold-light);
  font-family: Georgia, "Times New Roman", serif;
  font-size: .58em;
  font-weight: 400;
  letter-spacing: .1em;
}

.hero-lead {
  max-width: 34rem;
  margin: 1.35rem 0 0;
  color: rgba(244, 240, 229, .78);
  font-family: var(--serif);
  font-size: clamp(1rem, 2vw, 1.24rem);
  line-height: 2;
}

.constellation {
  width: 100%;
  max-width: 22rem;
  margin-inline: auto;
  color: var(--gold-light);
  filter: drop-shadow(0 0 18px rgba(213, 189, 130, .18));
}

.constellation .orbit { fill: none; stroke: currentColor; stroke-width: 1; opacity: .15; }
.constellation .line { fill: none; stroke: currentColor; stroke-width: 1.3; opacity: .55; }
.constellation .star { fill: var(--paper); }
.constellation .major { fill: var(--accent); stroke: var(--gold-light); stroke-width: 1; }
.constellation .glyph { fill: currentColor; font-family: Georgia, serif; font-size: 74px; opacity: .9; }
.constellation .hero-note { fill: var(--sage-pale); font-family: var(--sans); font-size: 10px; letter-spacing: .24em; opacity: .55; }

main {
  background:
    linear-gradient(rgba(244, 240, 229, .975), rgba(244, 240, 229, .975)),
    repeating-linear-gradient(90deg, transparent 0 7px, rgba(38, 49, 43, .05) 7px 8px);
}

.reading {
  width: min(100% - 2.5rem, var(--reading));
  margin-inline: auto;
}

.intro-card {
  position: relative;
  top: -2.9rem;
  margin-bottom: -1rem;
  padding: clamp(2rem, 5vw, 3.5rem);
  background: rgba(251, 248, 240, .98);
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
  box-shadow: var(--shadow);
}

.dropcap::first-letter {
  float: left;
  margin: .15em .18em 0 0;
  color: var(--accent);
  font-family: var(--serif);
  font-size: 4.5rem;
  line-height: .8;
}

p { margin: 0 0 1.5em; }
p:last-child { margin-bottom: 0; }
strong { color: var(--forest-800); }

.section-kicker {
  display: block;
  margin-bottom: .55rem;
  color: var(--accent);
}

.section-title {
  margin: 0 0 1.35rem;
  color: var(--forest-800);
  font-size: clamp(1.8rem, 4.5vw, 2.7rem);
}

.method-note {
  margin-top: 2rem;
  padding: 1rem 1.2rem;
  color: var(--ink-soft);
  background: rgba(220, 229, 217, .48);
  border-left: 3px solid var(--accent);
  font-size: .82rem;
  line-height: 1.85;
}

.keywords {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem;
  margin: 2rem 0 0;
}

.keywords span {
  padding: .28rem .8rem;
  color: var(--forest-800);
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  border-radius: 999px;
  font-size: .76rem;
  font-weight: 700;
}

.year-picker {
  padding: 3.5rem 0 5rem;
}

.year-picker h2 {
  margin: 0 0 1.3rem;
  color: var(--forest-800);
  font-size: 1.35rem;
  text-align: center;
}

.year-picker ul {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: .45rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.year-picker a {
  display: block;
  padding: .75rem .2rem;
  border-block: 1px solid var(--line);
  font-family: Georgia, serif;
  font-weight: 700;
  text-align: center;
  text-decoration: none;
}

.year-picker a[aria-current="page"] {
  color: var(--paper-light);
  background: var(--accent);
  border-color: var(--accent);
}

.sky-map {
  padding: 4.8rem 0;
  color: rgba(244, 240, 229, .78);
  background: var(--forest-900);
}

.sky-map .section-title { color: var(--paper); }
.sky-map .section-kicker { color: var(--gold-light); }

.transit-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  margin-top: 2.2rem;
  background: rgba(213, 189, 130, .18);
  border: 1px solid rgba(213, 189, 130, .18);
}

.transit {
  padding: 1.55rem;
  background: var(--forest-900);
}

.transit h3 {
  margin: 0 0 .55rem;
  color: var(--paper);
  font-size: 1.05rem;
}

.transit p {
  color: rgba(244, 240, 229, .68);
  font-size: .84rem;
  line-height: 1.85;
}

.field {
  padding: 6.5rem 0;
  border-bottom: 1px solid var(--line);
}

.field-label {
  display: block;
  margin-bottom: .6rem;
  color: var(--accent);
}

.field > h2 {
  margin: 0 0 1.8rem;
  color: var(--forest-800);
  font-size: clamp(2rem, 5vw, 3rem);
}

.field h3 {
  display: flex;
  align-items: center;
  gap: .8rem;
  margin: 3.1rem 0 1rem;
  color: var(--forest-700);
  font-size: 1.28rem;
}

.field h3::after {
  flex: 1;
  height: 1px;
  content: "";
  background: linear-gradient(90deg, color-mix(in srgb, var(--accent) 55%, transparent), transparent);
}

.field h3:first-of-type { margin-top: 2.2rem; }

.signal-box,
.action-box,
.caution-box {
  margin-top: 2.2rem;
  padding: 1.4rem 1.55rem;
  background: rgba(255, 255, 255, .36);
  border: 1px solid var(--line);
}

.signal-box { border-top: 3px solid var(--accent); }
.caution-box { border-left: 3px solid var(--accent); }

.signal-box h3,
.action-box h3,
.caution-box h3 {
  margin: 0 0 .65rem;
  font-size: 1.05rem;
}

.signal-box h3::after,
.action-box h3::after,
.caution-box h3::after { display: none; }

.signal-box ul,
.action-box ul,
.caution-box ul {
  margin: 0;
  padding-left: 1.25rem;
}

.signal-box li,
.action-box li,
.caution-box li {
  margin: .4rem 0;
  font-size: .9rem;
  line-height: 1.8;
}

.guidance {
  padding: 6rem 0;
  color: var(--paper);
  background: var(--accent);
}

.guidance .section-kicker,
.guidance .section-title { color: var(--paper); }

.guidance ol {
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
  counter-reset: advice;
}

.guidance li {
  position: relative;
  margin: 0;
  padding: 1.25rem 0 1.25rem 3.6rem;
  border-top: 1px solid rgba(255, 255, 255, .28);
  counter-increment: advice;
}

.guidance li::before {
  position: absolute;
  left: .4rem;
  content: "0" counter(advice);
  color: rgba(255, 255, 255, .72);
  font-family: Georgia, serif;
  font-size: 1.1rem;
}

.guidance strong { color: #fff; }

.closing { padding: 6.5rem 0; }

.closing-quote {
  margin: 2.5rem 0;
  padding: 2rem;
  color: var(--forest-800);
  background: var(--accent-soft);
  border-left: 3px solid var(--accent);
  font-family: var(--serif);
  font-size: clamp(1.15rem, 3vw, 1.45rem);
  line-height: 1.9;
}

.page-turn {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 4rem;
}

.page-turn a,
.page-turn span {
  display: block;
  min-height: 6rem;
  padding: 1rem 1.2rem;
  background: rgba(255, 255, 255, .42);
  border: 1px solid var(--line);
  text-decoration: none;
}

.page-turn .next { text-align: right; }
.page-turn small { display: block; color: var(--ink-soft); font-size: .72rem; }

.notes {
  padding: 4rem 0;
  color: var(--ink-soft);
  background: var(--paper-deep);
  font-size: .82rem;
  line-height: 1.85;
}

.notes h2 {
  margin: 0 0 1rem;
  color: var(--forest-800);
  font-size: 1.2rem;
}

.notes ul { margin: 1rem 0 0; padding-left: 1.2rem; }

footer {
  padding: 2.7rem 1.5rem;
  color: rgba(244, 240, 229, .67);
  background: var(--forest-950);
  font-size: .75rem;
  text-align: center;
}

footer p { margin: 0 0 .6rem; }
footer a { color: var(--sage-pale); }

@media (max-width: 760px) {
  body { font-size: 16px; line-height: 1.95; }
  .hero-inner { grid-template-columns: 1fr; gap: 1rem; padding-top: 4rem; text-align: center; }
  .hero-lead { margin-inline: auto; }
  .constellation { max-width: 15rem; }
  .year-picker ul { grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .transit-grid { grid-template-columns: 1fr; }
  .field { padding: 5rem 0; }
  .page-turn { grid-template-columns: 1fr; }
  .page-turn .next { text-align: left; }
}

@media (max-width: 420px) {
  .reading { width: min(100% - 1.5rem, var(--reading)); }
  .hero-inner { width: min(100% - 1.5rem, 67rem); }
  .site-nav { width: min(100% - 1rem, 72rem); }
  .site-nav a { font-size: .66rem; }
  .year-picker a { font-size: .8rem; }
  .intro-card { padding: 1.5rem; }
  .signal-box, .action-box, .caution-box { padding: 1.15rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}

@media print {
  body { color: #111; background: #fff; font-size: 11pt; }
  .site-nav, .star-field, .year-picker, .page-turn, footer { display: none; }
  .hero { min-height: 0; color: #111; }
  .hero-inner { display: block; min-height: 0; padding: 1.5rem 0; }
  .hero-lead, .sky-map, .sky-map .section-title, .transit p, .transit h3, .guidance { color: #111; }
  .constellation { display: none; }
  .intro-card { top: 0; box-shadow: none; }
  .sky-map, .transit, .guidance { background: #fff; border: 1px solid #aaa; }
  .field { break-before: page; }
}