:root {
  --ink: #171717;
  --paper: #fffef8;
  --yellow: #efe5a8;
  --blue: #dcebed;
  --red: #b44b3f;
  --line: 2px solid var(--ink);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Zen Maru Gothic", "Yu Gothic", "Hiragino Kaku Gothic ProN", sans-serif;
  font-size: 1rem;
  line-height: 1.8;
  background-image: linear-gradient(rgba(33,33,33,.025) 1px, transparent 1px), radial-gradient(#d8d3c4 .55px, transparent .55px);
  background-size: 100% 28px, 8px 8px;
}

a { color: inherit; }
.site-header {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-block: 1px solid var(--ink);
  margin-top: 14px;
  min-height: 54px;
}
.brand { font-weight: 900; text-decoration: none; letter-spacing: .08em; }
nav { display: flex; gap: 22px; }
nav a { font-size: .88rem; font-weight: 700; text-decoration-style: dotted; text-underline-offset: 5px; }

main { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.hero { padding: 26px 0 56px; text-align: center; border-bottom: 8px double var(--ink); }
.hero-art { display: grid; place-items: center; padding: 8px 0 18px; }
.title-art {
  display: block;
  width: min(68%, 680px);
  height: auto;
  transform: rotate(-1deg);
  mix-blend-mode: multiply;
}
.issue-number { display: inline-block; margin: 6px 0 20px; padding: 2px 16px; border: 1px solid; border-radius: 50%; font-size: .84rem; font-weight: 700; letter-spacing: .12em; transform: rotate(-1deg); }
.lead { margin: 0; font-size: clamp(1.7rem, 4vw, 3.35rem); line-height: 1.45; letter-spacing: .035em; }
.lead strong { text-decoration: underline; text-decoration-style: wavy; text-decoration-thickness: 2px; text-underline-offset: 8px; }
.intro { max-width: 680px; margin: 26px auto 30px; text-align: center; font-size: 1.08rem; font-weight: 700; }
.hero-note { margin: -14px auto 30px; font-size: .96rem; }
nav a:focus-visible { outline: 3px solid var(--red); outline-offset: 4px; }

section:not(.hero) { margin-bottom: 62px; }
.eyebrow { display: inline-block; margin: 0 0 10px; padding: 1px 10px; border: 1px solid; background: var(--paper); font-size: .82rem; font-weight: 900; letter-spacing: .16em; transform: rotate(-1deg); }
h2 { margin: 0 0 28px; padding-bottom: 10px; border-bottom: 3px dotted var(--ink); font-size: clamp(1.65rem, 3vw, 2.35rem); line-height: 1.45; font-weight: 900; letter-spacing: .04em; }
h3 { margin: 10px 0 8px; font-size: 1.14rem; }
.notice { border: 3px solid var(--ink); padding: 34px; background: rgba(255,255,255,.58); box-shadow: 5px 5px 0 rgba(23,23,23,.16); }
.notice-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 36px; }
.notice-grid article { padding-right: 28px; border-right: 1px dashed var(--ink); }
.notice-grid article:last-child { padding-right: 0; border-right: 0; }
.notice-grid p { margin: 0; }
.about-copy { max-width: 820px; font-size: 1.05rem; }
.about-copy p { margin: 0 0 1.1em; }
.stamp { display: grid; place-items: center; width: 58px; height: 58px; border: var(--line); border-radius: 48% 52% 45% 55%; background: var(--paper); font-weight: 900; transform: rotate(-6deg); }

.activities { display: block; padding: 36px 0; border-block: 2px solid var(--ink); }
.activities > div { max-width: 820px; }
.check-list { margin: 0; padding: 0; list-style: none; border-top: var(--line); }
.check-list li { display: block; position: relative; padding: 13px 18px 13px 48px; border-bottom: 1px dashed var(--ink); font-weight: 700; line-height: 1.65; }
.check-list li::before { content: "○"; position: absolute; left: 12px; top: 10px; font-size: 1.35rem; font-weight: 900; transform: rotate(-8deg); }
.offline-note { margin: 32px 0 0; padding: 20px 24px; border: 2px dashed var(--ink); background: var(--blue); text-align: center; transform: rotate(-.25deg); }
.rules { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.rules ul { margin: 0; padding: 24px 28px 24px 52px; border: 3px double var(--ink); background: #fff; font-weight: 700; transform: rotate(.4deg); }
.rules li + li { margin-top: 10px; }

footer { width: min(1120px, calc(100% - 32px)); margin: 0 auto; padding: 28px 0 36px; border-top: var(--line); display: flex; justify-content: space-between; gap: 20px; }
footer p { margin: 0; }

@media (max-width: 760px) {
  .site-header { min-height: 62px; }
  nav a { display: none; }
  nav a:last-child { display: inline; }
  .hero { padding-top: 24px; }
  .hero-art { padding-block: 0 12px; }
  .title-art { width: 96%; }
  .intro { font-weight: 500; }
  .notice-grid { grid-template-columns: 1fr; gap: 30px; }
  .notice-grid article { padding: 0 0 28px; border-right: 0; border-bottom: 1px dashed; }
  .notice-grid article:last-child { padding-bottom: 0; border-bottom: 0; }
  .rules { grid-template-columns: 1fr; gap: 26px; }
  .notice { padding: 28px 20px; }
  footer { display: block; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }