:root {
  --bg: #121110;
  --bg-raise: rgba(233, 228, 216, 0.022);
  --bg-raise-hi: rgba(233, 228, 216, 0.045);
  --ink: #e9e4d8;
  --dim: #8f887a;
  --faint: #46413a;
  --line: rgba(233, 228, 216, 0.12);
  --line-strong: rgba(233, 228, 216, 0.22);
  --shu: #c73e2d;          /* 朱 */
  --shu-dim: rgba(199, 62, 45, 0.16);
  --mincho: "Shippori Mincho B1", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --pad: clamp(20px, 4vw, 60px);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--mincho);
  font-size: 16px;
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

.noise {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.045;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence baseFrequency='0.8'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
}

a { color: inherit; text-decoration: none; }
a:focus-visible,
button:focus-visible { outline: 2px solid var(--shu); outline-offset: 3px; }

/* ============ header ============ */
.top {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: clamp(1rem, 3vw, 3rem);
  padding: 15px var(--pad);
  border-bottom: 1px solid var(--line);
  background: rgba(18, 17, 16, 0.72);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.top .name {
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.24em;
}
.top-nav {
  display: flex;
  gap: clamp(1rem, 2.4vw, 2.2rem);
  margin-left: auto;
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--dim);
}
.top-nav a { transition: color 0.3s; }
.top-nav a:hover { color: var(--ink); }
.top .clock {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--dim);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* ============ hero ============ */
.hero {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: stretch;
  min-height: min(78svh, 720px);
  border-bottom: 1px solid var(--line);
}
.hero-left {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: clamp(14px, 2.6svh, 26px);
  padding: clamp(40px, 6vh, 80px) var(--pad);
  min-width: 0;
}
.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--shu);
}
.wordmark {
  font-family: var(--mono);
  font-weight: 500;
  font-size: min(9vw, 7rem);
  letter-spacing: -0.03em;
  line-height: 1.02;
  white-space: nowrap;
  user-select: none;
}
.wordmark em { font-style: normal; color: var(--shu); }
.romaji {
  font-size: clamp(15px, 1.5vw, 20px);
  letter-spacing: 0.14em;
  color: var(--dim);
  max-width: 34ch;
}
/* 文節ごとに span で括り、内部での折り返しを禁止 → 文節境界でのみ改行 */
.romaji span { white-space: nowrap; }

.stats {
  display: flex;
  align-items: center;
  gap: clamp(1.2rem, 3vw, 2.6rem);
  margin-top: clamp(8px, 2svh, 22px);
  padding-top: clamp(16px, 2.6svh, 28px);
  border-top: 1px solid var(--line);
  flex-wrap: wrap;
}
.stat { display: flex; flex-direction: column; gap: 2px; }
.stat-value {
  font-family: var(--mono);
  font-size: clamp(20px, 2.4vw, 30px);
  font-weight: 500;
  letter-spacing: 0.02em;
  line-height: 1.1;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}
.stat-label {
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--dim);
}
.stat-sep { width: 1px; align-self: stretch; background: var(--line); }

.hero-right {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 1.6rem;
  padding: clamp(30px, 5vh, 60px) clamp(24px, 3vw, 46px);
  border-left: 1px solid var(--line);
  writing-mode: vertical-rl;
  max-width: 34vw;
  overflow: hidden;
}
.tate {
  font-size: clamp(20px, 2.4vw, 32px);
  font-weight: 500;
  letter-spacing: 0.26em;
  line-height: 1.9;
  max-height: 100%;
}
.tate span { white-space: nowrap; display: inline-block; }
.seal {
  align-self: flex-end;
  font-size: 22px;
  font-weight: 600;
  color: var(--shu);
  border: 1.5px solid var(--shu);
  padding: 11px 7px;
  letter-spacing: 0.2em;
  line-height: 1;
}

/* ============ section shell ============ */
.section {
  position: relative;
  z-index: 1;
  padding: clamp(48px, 8vh, 96px) var(--pad);
  border-bottom: 1px solid var(--line);
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.2rem;
  flex-wrap: wrap;
  margin-bottom: clamp(26px, 4vh, 44px);
}
.section-title { display: flex; align-items: center; gap: clamp(14px, 2vw, 22px); }
.section-index {
  font-family: var(--mincho);
  font-size: 20px;
  font-weight: 600;
  color: var(--shu);
  border: 1.5px solid var(--shu);
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  line-height: 1;
  flex-shrink: 0;
}
.section-title h2 {
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.2;
}
.section-title h2 small {
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--dim);
  margin-top: 2px;
}
.updated {
  display: flex;
  align-items: center;
  gap: 0.55em;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--dim);
}
.dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--shu);
  box-shadow: 0 0 0 0 var(--shu-dim);
  animation: pulse 2.4s ease-out infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(199,62,45,0.5); }
  70% { box-shadow: 0 0 0 8px rgba(199,62,45,0); }
  100% { box-shadow: 0 0 0 0 rgba(199,62,45,0); }
}

/* ============ filters ============ */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin-bottom: clamp(24px, 4vh, 40px);
}
.filter {
  font-family: var(--mincho);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--dim);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 15px;
  cursor: pointer;
  transition: color 0.25s, border-color 0.25s, background 0.25s;
  white-space: nowrap;
}
.filter .n {
  font-family: var(--mono);
  font-size: 11px;
  margin-left: 0.5em;
  color: var(--faint);
  transition: color 0.25s;
}
.filter:hover { color: var(--ink); border-color: var(--line-strong); }
.filter[aria-selected="true"] {
  color: var(--bg);
  background: var(--ink);
  border-color: var(--ink);
}
.filter[aria-selected="true"] .n { color: rgba(18,17,16,0.55); }

/* ============ grid ============ */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.state {
  grid-column: 1 / -1;
  padding: 60px 20px;
  text-align: center;
  color: var(--dim);
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  background: var(--bg);
}
.state a { color: var(--shu); }

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(20px, 2.4vw, 28px);
  background: var(--bg);
  transition: background 0.3s;
  min-width: 0;
}
.card::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
  background: var(--shu);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}
.card:hover { background: var(--bg-raise); }
.card:hover::before { transform: scaleY(1); }

.card-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}
.card-name {
  font-family: var(--mono);
  font-size: clamp(16px, 1.5vw, 19px);
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--ink);
  word-break: break-word;
}
.card-lang {
  flex-shrink: 0;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--dim);
  border: 1px solid var(--line);
  padding: 2px 8px;
  border-radius: 3px;
}
.card-desc {
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--dim);
  display: -webkit-box;
  -webkit-line-clamp: 4;
  line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-cats { display: flex; flex-wrap: wrap; gap: 6px; }
.card-cat {
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--shu);
  background: var(--shu-dim);
  padding: 2px 9px;
  border-radius: 3px;
}
.card-foot {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--dim);
}
.card-stars { display: inline-flex; align-items: center; gap: 5px; }
.card-stars svg { width: 12px; height: 12px; fill: currentColor; }
.card-updated { color: var(--faint); }
.card-link {
  margin-left: auto;
  color: var(--dim);
  transition: color 0.25s;
}
.card:hover .card-link { color: var(--shu); }

/* ============ about ============ */
.about-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: clamp(30px, 5vw, 70px);
}
.about-block h3 {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--shu);
  margin-bottom: 14px;
}
.about-block p {
  font-size: 15px;
  line-height: 2;
  color: var(--dim);
  max-width: 52ch;
}
.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--ink);
  border: 1px solid var(--line);
  padding: 5px 13px;
  border-radius: 999px;
}
.tag-skeleton {
  width: 120px; height: 30px;
  border-radius: 999px;
  background: var(--bg-raise-hi);
}

/* ============ footer ============ */
.bottom {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem 2.5rem;
  flex-wrap: wrap;
  padding: 22px var(--pad);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--dim);
}
.bottom .mono { color: var(--faint); }

/* ============ responsive ============ */
@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .top { gap: 0.8rem; }
  .top-nav { display: none; }
  .hero {
    grid-template-columns: 1fr;
    min-height: 0;
  }
  .hero-right {
    order: -1;
    max-width: none;
    border-left: none;
    border-bottom: 1px solid var(--line);
    flex-direction: row;
    justify-content: space-between;
    align-items: stretch;
    writing-mode: vertical-rl;
    min-height: 42svh;
    padding: 26px var(--pad);
  }
  .wordmark { font-size: clamp(2.6rem, 15vw, 5rem); }
  .grid { grid-template-columns: 1fr; }
  .bottom { flex-direction: column; align-items: flex-start; gap: 0.7rem; }
}
@media (max-width: 420px) {
  .stats { gap: 1rem; }
  .stat-sep { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .dot { animation: none; }
  .card::before { transition: none; }
}