:root {
  --bg: #030706;
  --bg-2: #06110f;
  --ink: #f2f7f3;
  --sub: #b9cbc3;
  --muted: #7f9a91;
  --line: rgba(70, 255, 184, 0.24);
  --green: #23f5a2;
  --green-2: #00b879;
  --cyan: #49e5ff;
  --violet: #7b4cff;
  --panel: rgba(3, 15, 13, 0.72);
  --max: 920px;
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 78% 12%, rgba(35, 245, 162, 0.18), transparent 28rem),
    radial-gradient(circle at 18% 82%, rgba(123, 76, 255, 0.13), transparent 24rem),
    linear-gradient(180deg, #020403 0%, var(--bg) 42%, #010202 100%);
  font-family:
    "Hiragino Mincho ProN",
    "Yu Mincho",
    "YuMincho",
    "Noto Serif JP",
    "Times New Roman",
    serif;
  line-height: 1.95;
  letter-spacing: 0.035em;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.026) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.022) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(circle at 50% 18%, black, transparent 74%);
  opacity: 0.42;
  z-index: 0;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    repeating-linear-gradient(
      180deg,
      rgba(255,255,255,0.018) 0,
      rgba(255,255,255,0.018) 1px,
      transparent 1px,
      transparent 5px
    );
  mix-blend-mode: screen;
  opacity: 0.18;
  z-index: 1;
}

a {
  color: var(--ink);
  text-decoration-color: rgba(35, 245, 162, 0.65);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.24em;
}

.page {
  position: relative;
  z-index: 2;
}

.hero {
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: 32px;
  background:
    linear-gradient(180deg, rgba(0,0,0,0.08), rgba(0,0,0,0.56)),
    url("./assets/hero-yakushoron.png") center / cover no-repeat;
  border-bottom: 1px solid var(--line);
}

.hero-inner {
  width: min(100%, 980px);
  display: grid;
  justify-items: center;
  text-align: center;
  padding: clamp(52px, 9vw, 96px) 20px;
}

.site-label {
  margin: 0 0 clamp(52px, 8vw, 88px);
  color: rgba(242, 247, 243, 0.78);
  font-family:
    ui-monospace,
    SFMono-Regular,
    Menlo,
    Monaco,
    Consolas,
    "Liberation Mono",
    monospace;
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: lowercase;
}

h1 {
  margin: 0;
  color: white;
  font-size: clamp(3.6rem, 10vw, 8rem);
  font-weight: 500;
  letter-spacing: clamp(0.14em, 2vw, 0.2em);
  line-height: 1.04;
  text-shadow:
    0 0 24px rgba(35, 245, 162, 0.22),
    0 0 56px rgba(73, 229, 255, 0.12),
    0 3px 24px rgba(0, 0, 0, 0.8);
}

.lead {
  max-width: 760px;
  margin: clamp(36px, 6vw, 58px) 0 0;
  color: rgba(255,255,255,0.92);
  font-size: clamp(1.05rem, 2.2vw, 1.55rem);
  line-height: 1.95;
  letter-spacing: 0.11em;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.92);
}

.hero-note {
  margin: clamp(42px, 6vw, 64px) 0 0;
  display: inline-flex;
  gap: 0.78em;
  align-items: center;
  color: rgba(185, 203, 195, 0.86);
  font-size: 0.76rem;
  letter-spacing: 0.15em;
  font-family:
    ui-monospace,
    SFMono-Regular,
    Menlo,
    Monaco,
    Consolas,
    "Liberation Mono",
    monospace;
}

.hero-note::before,
.hero-note::after {
  content: "";
  width: 38px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(35,245,162,0.78));
}

.hero-note::after {
  background: linear-gradient(90deg, rgba(35,245,162,0.78), transparent);
}

.article-wrap {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
  padding: clamp(64px, 10vw, 112px) 0 72px;
}

.article {
  position: relative;
  padding: clamp(30px, 5vw, 64px);
  background:
    linear-gradient(180deg, rgba(3, 15, 13, 0.92), rgba(3, 10, 9, 0.86)),
    radial-gradient(circle at 92% 16%, rgba(35,245,162,0.12), transparent 24rem);
  border: 1px solid var(--line);
  box-shadow:
    0 0 0 1px rgba(255,255,255,0.025) inset,
    0 32px 96px rgba(0,0,0,0.45);
  backdrop-filter: blur(8px);
}

.article::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border: 1px solid rgba(123,76,255,0.14);
  transform: translate(10px, 10px);
  z-index: -1;
}

.article-kicker {
  margin: 0 0 22px;
  color: var(--green);
  font-family:
    ui-monospace,
    SFMono-Regular,
    Menlo,
    Monaco,
    Consolas,
    "Liberation Mono",
    monospace;
  font-size: 0.76rem;
  letter-spacing: 0.18em;
}

h2 {
  margin: 0 0 clamp(34px, 5vw, 50px);
  color: white;
  font-size: clamp(1.7rem, 4vw, 2.7rem);
  font-weight: 500;
  letter-spacing: 0.14em;
  line-height: 1.5;
}

.body-copy p {
  margin: 0;
  color: rgba(242, 247, 243, 0.9);
  font-size: clamp(1rem, 1.7vw, 1.08rem);
}

.body-copy p + p {
  margin-top: 1.7em;
}

.body-copy p:first-of-type {
  color: rgba(255,255,255,0.96);
  font-size: clamp(1.06rem, 2vw, 1.2rem);
}

.article-meta {
  margin-top: 64px;
  padding-top: 22px;
  border-top: 1px solid rgba(70, 255, 184, 0.16);
  color: var(--muted);
  font-family:
    ui-monospace,
    SFMono-Regular,
    Menlo,
    Monaco,
    Consolas,
    "Liberation Mono",
    monospace;
  font-size: 0.76rem;
  line-height: 1.8;
  letter-spacing: 0.04em;
}

.site-footer {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
  padding: 0 0 48px;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.8;
}

.site-footer p {
  margin: 0;
}

.site-footer p + p {
  margin-top: 0.45rem;
}

@media (max-width: 720px) {
  .hero {
    min-height: 82svh;
    padding: 18px;
    background-position: center top;
  }

  .site-label {
    margin-bottom: 42px;
  }

  .lead {
    letter-spacing: 0.06em;
  }

  .article-wrap,
  .site-footer {
    width: min(calc(100% - 28px), var(--max));
  }

  .article {
    padding: 26px 20px;
  }
}

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