/* 2026 nocturnal hydro-ECG: OLED navy, cyan pulse, festival gold, missing-tooth voids */
:root {
  --ink: #071018;
  --panel: #0c1a24;
  --cyan: #78e0ff;
  --cyan-dim: rgba(120, 224, 255, 0.18);
  --gold: #e8c36a;
  --algae: #7aa35a;
  --warn: #ff8a6a;
  --paper: #e7f4f8;
  --mute: #8aa3b0;
  --line: rgba(120, 224, 255, 0.22);
  --serif: "Noto Serif SC", "Songti SC", serif;
  --sans: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }
section[id] { scroll-margin-top: 72px; }

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
code {
  font-family: var(--mono);
  font-size: 0.9em;
  color: var(--gold);
}

.caustic {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 5;
  opacity: 0.05;
  background-image: url("images/texture.webp");
  background-size: 520px auto;
  mix-blend-mode: soft-light;
}

.skip { position: absolute; left: -999px; }
.skip:focus {
  left: 12px;
  top: 12px;
  z-index: 80;
  background: var(--gold);
  color: var(--ink);
  padding: 8px 12px;
}

.pulse-bar {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 20px;
  background: rgba(7, 16, 24, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--serif);
  font-weight: 700;
  letter-spacing: 0.04em;
}
.brand small {
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 400;
  color: var(--mute);
  letter-spacing: 0.08em;
}

.ecg {
  width: 42px;
  height: 18px;
  color: var(--cyan);
  flex-shrink: 0;
}

.pulse-links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  align-items: center;
}
.pulse-links a {
  font-size: 13px;
  color: var(--mute);
}
.pulse-links a.is-active,
.pulse-links a:hover { color: var(--cyan); }
.pulse-links .live {
  color: var(--ink);
  background: var(--gold);
  padding: 6px 12px;
  border-radius: 999px;
  font-weight: 700;
}

.nav-toggle {
  display: none;
  background: transparent;
  color: var(--paper);
  border: 1px solid var(--line);
  padding: 6px 10px;
}

.hero {
  position: relative;
  min-height: 92vh;
  display: grid;
  align-items: end;
}
.hero > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(7, 16, 24, 0.15) 0%, rgba(7, 16, 24, 0.88) 72%);
  z-index: 1;
}
.hero-copy {
  position: relative;
  z-index: 2;
  padding: 48px 8vw 56px;
  max-width: 920px;
}

.kicker {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold);
  text-transform: uppercase;
  margin: 0 0 10px;
}

h1, h2, h3 { font-family: var(--serif); font-weight: 700; line-height: 1.2; }
h1 { font-size: clamp(2.4rem, 6vw, 4.4rem); margin: 0 0 16px; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); margin: 0 0 12px; }
h3 { font-size: 1.15rem; margin: 0 0 8px; }

.lead { font-size: 1.05rem; color: #d5e8ee; max-width: 62ch; }

.scope {
  margin: 24px 0;
  padding: 14px 16px 8px;
  background: rgba(12, 26, 36, 0.78);
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
}
.scope.gap { border-left-color: #d9e7ee; }
.scope.algae { border-left-color: var(--algae); }
.scope.wind { border-left-color: var(--warn); }
.scope.ice { border-left-color: #9fd4ff; }

.scope-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 13px;
  color: var(--mute);
}
.scope-meta strong { color: var(--paper); font-weight: 500; }
.scope-svg {
  width: 100%;
  height: 72px;
  color: var(--cyan);
  margin: 6px 0 0;
}
.scope p { margin: 4px 0 8px; color: var(--mute); font-size: 14px; }

.cta { display: flex; flex-wrap: wrap; gap: 10px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--paper);
  font-size: 14px;
}
.btn.fill {
  background: var(--cyan);
  color: var(--ink);
  border-color: var(--cyan);
  font-weight: 700;
}
.btn.ghost:hover { border-color: var(--gold); color: var(--gold); }

.wrap { width: min(1120px, calc(100% - 40px)); margin: 0 auto; padding: 72px 0; }
.quiet { color: var(--mute); max-width: 68ch; }

.tri {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 28px;
}
.tri article {
  padding: 20px;
  background: var(--panel);
  border: 1px solid var(--line);
}
.tri.warn { border-color: rgba(255, 138, 106, 0.4); }
.tri ul { margin: 0; padding-left: 1.1em; color: #cfe0e6; }

.alt { background: #09151d; }

.beat {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
  margin: 48px 0;
}
.beat.reverse { direction: rtl; }
.beat.reverse > * { direction: ltr; }
.num {
  font-family: var(--mono);
  color: var(--gold);
  font-size: 12px;
  letter-spacing: 0.12em;
}
figure { margin: 0; }
figcaption {
  font-size: 13px;
  color: var(--mute);
  margin-top: 8px;
}

.line {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
  list-style: none;
  padding: 0;
  margin: 24px 0 32px;
  counter-reset: st;
}
.line li {
  counter-increment: st;
  padding: 12px 10px;
  border-top: 2px solid var(--cyan);
  background: var(--panel);
  font-size: 14px;
}
.line li::before {
  content: counter(st, decimal-leading-zero);
  display: block;
  font-family: var(--mono);
  color: var(--gold);
  font-size: 11px;
  margin-bottom: 4px;
}

.bench-grid,
.value-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.bench-grid article,
.value-grid article {
  padding: 18px 20px;
  border: 1px solid var(--line);
  background: rgba(12, 26, 36, 0.6);
}

.rules { padding-left: 1.2em; }
.rules li { margin: 8px 0; }

.role-table {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-top: 20px;
}
.role-table div {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 16px;
  padding: 14px 18px;
  background: var(--panel);
}
.role-table span { color: var(--mute); }

footer {
  border-top: 1px solid var(--line);
  background: #050c12;
}
.foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 28px 0;
}

@media (max-width: 900px) {
  .scope-meta { flex-direction: column; align-items: flex-start; gap: 4px; }
  .hero { min-height: 0; }
  .hero-copy { padding: 36px 20px 40px; }
  .nav-toggle { display: block; }
  .pulse-links {
    display: none;
    position: absolute;
    top: 52px;
    right: 12px;
    left: 12px;
    flex-direction: column;
    align-items: stretch;
    padding: 12px;
    background: var(--panel);
    border: 1px solid var(--line);
  }
  .pulse-links.open { display: flex; }
  .tri,
  .beat,
  .line,
  .bench-grid,
  .value-grid { grid-template-columns: 1fr; }
  .beat.reverse { direction: ltr; }
  .role-table div { grid-template-columns: 1fr; }
  .foot { flex-direction: column; align-items: flex-start; }
  h1 { font-size: 2.2rem; }
  .hero { min-height: 100vh; }
}