:root {
  --night: #12081c;
  --violet: #6c4ae0;
  --oak: #c48a4a;
  --amber: #e08a2a;
  --cream: #f3ead8;
  --ink: #1a120c;
  --mute: #8a7a6c;
  --ok: #2f8a6a;
  --bad: #c43a3a;
  --display: "Spectral", "Songti SC", serif;
  --sans: "Noto Sans SC", "PingFang SC", 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: 76px;
}

body {
  margin: 0;
  color: var(--cream);
  background:
    radial-gradient(1200px 480px at 80% -10%, rgba(108, 74, 224, 0.28), transparent 60%),
    var(--night);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.72;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

.app-link {
  color: var(--violet);
  text-decoration: underline;
  text-underline-offset: 3px;
}

button {
  font-family: inherit;
  cursor: pointer;
}

.river-veil {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 1;
  opacity: 0.18;
  background-image: url("images/texture.webp");
  background-size: 280px auto;
  mix-blend-mode: screen;
}

.skip {
  position: absolute;
  left: -999px;
}

.skip:focus {
  left: 12px;
  top: 8px;
  z-index: 40;
  background: var(--violet);
  color: #fff;
  padding: 6px 10px;
}

.lamp-rail {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 8px 22px;
  background: rgba(18, 8, 28, 0.92);
  border-bottom: 1px solid rgba(108, 74, 224, 0.45);
  backdrop-filter: blur(10px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--display);
  font-size: 28px;
  font-style: italic;
}

.brand small {
  display: block;
  font-family: var(--mono);
  font-size: 10px;
  font-style: normal;
  color: var(--mute);
  letter-spacing: 0.14em;
}

.energy-cell {
  width: 14px;
  height: 28px;
  border-radius: 7px;
  background: linear-gradient(to top, var(--violet) 62%, #2a1838 62%);
  box-shadow: 0 0 10px rgba(108, 74, 224, 0.7);
}

.lamp-nav {
  margin-left: auto;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  font-size: 14px;
}

.lamp-nav a.is-active {
  color: var(--oak);
  box-shadow: inset 0 -2px 0 var(--oak);
}

.lamp-nav .live {
  background: var(--violet);
  color: #fff;
  padding: 4px 10px;
  border-radius: 999px;
}

.nav-toggle {
  display: none;
  margin-left: auto;
  background: var(--violet);
  color: #fff;
  border: 0;
  width: 42px;
  height: 42px;
  font-family: var(--display);
  font-size: 20px;
}

.hero,
.coat-line {
  position: relative;
  z-index: 2;
  padding: 36px 40px 28px;
  max-width: 1080px;
  margin: 0 auto;
}

.uv-river {
  background:
    linear-gradient(180deg, rgba(196, 138, 74, 0.08), transparent 40%),
    linear-gradient(90deg, transparent 0 46%, rgba(108, 74, 224, 0.12) 50%, transparent 54%);
}

.kicker {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--violet);
  margin: 0 0 10px;
}

h1,
h2,
h3 {
  font-family: var(--display);
  font-weight: 700;
  line-height: 1.16;
  color: var(--cream);
}

h1 {
  font-size: clamp(2.2rem, 4.4vw, 3.4rem);
  margin: 0 0 16px;
  font-style: italic;
}

h2 {
  font-size: clamp(1.4rem, 2.4vw, 1.9rem);
  margin: 0 0 8px;
}

h3 {
  font-size: 1.05rem;
  margin: 0 0 8px;
  color: var(--oak);
}

.lead {
  max-width: 68ch;
  color: #d8cbb8;
}

.plank-row {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  padding: 0;
  margin: 0 0 18px;
}

.oak-plank {
  background: linear-gradient(180deg, #e2c08a, #b57a3a);
  color: var(--ink);
  padding: 10px 12px;
  border-radius: 3px 3px 10px 10px;
  font-family: var(--mono);
  font-size: 13px;
  box-shadow: 0 8px 0 rgba(0, 0, 0, 0.25);
}

.oak-plank small {
  display: block;
  font-size: 11px;
  opacity: 0.78;
}

.oak-plank.is-now {
  outline: 2px solid var(--violet);
}

.oak-plank.warn {
  background: linear-gradient(180deg, #f0c070, var(--amber));
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0;
}

.chip {
  font-family: var(--mono);
  font-size: 12px;
  border: 1px solid rgba(196, 138, 74, 0.45);
  padding: 3px 10px;
  border-radius: 999px;
}

.chip.warn {
  border-color: var(--amber);
  color: var(--amber);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 8px 0 22px;
}

.btn {
  display: inline-block;
  padding: 10px 16px;
  border-radius: 999px;
  font-size: 14px;
}

.btn-fill {
  background: var(--violet);
  color: #fff;
}

.btn-ghost {
  border: 1px solid rgba(243, 234, 216, 0.35);
}

.river-shot {
  margin: 0;
  clip-path: polygon(0 8%, 100% 0, 100% 92%, 0 100%);
  overflow: hidden;
}

.river-shot img {
  width: 100%;
  height: 340px;
  object-fit: cover;
}

.line-head {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 18px;
  margin-bottom: 22px;
}

.line-label {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--violet);
  margin: 0;
}

.three {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.oak-card {
  background: var(--cream);
  color: var(--ink);
  padding: 16px 18px;
  border-radius: 2px 18px 2px 18px;
  box-shadow: inset 0 0 0 1px rgba(196, 138, 74, 0.35);
}

.oak-card h3 {
  color: #7a4a16;
}

.oak-card ul {
  margin: 0;
  padding-left: 18px;
}

.oak-card p {
  margin: 0;
}

figure {
  margin: 22px 0 0;
}

figcaption {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--mute);
  margin-top: 8px;
}

.gate-list {
  margin: 0;
  padding-left: 20px;
}

.gate-list li {
  margin-bottom: 10px;
}

.split {
  display: grid;
  grid-template-columns: 1fr 160px;
  gap: 24px;
  align-items: start;
}

.lamp-label {
  display: block;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--oak);
  margin-bottom: 8px;
}

.lamp-row {
  display: flex;
  align-items: center;
  gap: 14px;
}

#lamp {
  flex: 1;
  accent-color: var(--violet);
}

#lamp-val {
  font-family: var(--mono);
  font-size: 28px;
  min-width: 2.2ch;
}

.tri-state {
  font-family: var(--mono);
  font-size: 14px;
}

.tri-state.late {
  color: var(--amber);
}

.tri-state.ok {
  color: var(--ok);
}

.hint {
  color: var(--mute);
  font-size: 14px;
}

.wick-bay {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--violet);
}

.energy-wick {
  width: 22px;
  height: 200px;
  border-radius: 12px;
  border: 1px solid rgba(108, 74, 224, 0.6);
  background: linear-gradient(to top, var(--amber) var(--fill, 68%), #2a1838 var(--fill, 68%));
  box-shadow: inset 0 0 12px rgba(224, 138, 42, 0.35);
}

.energy-wick.full {
  background: linear-gradient(to top, var(--violet) var(--fill, 92%), #2a1838 var(--fill, 92%));
  box-shadow: 0 0 18px rgba(108, 74, 224, 0.55);
}

.energy-wick.dim {
  background: linear-gradient(to top, var(--amber) var(--fill, 68%), #2a1838 var(--fill, 68%));
}

.amber-pit {
  list-style: none;
  padding: 0;
  margin: 0;
}

.amber-pit li {
  border-left: 3px solid var(--amber);
  padding: 8px 0 8px 14px;
  margin-bottom: 6px;
  background: rgba(224, 138, 42, 0.06);
}

.yin-yang {
  display: flex;
  gap: 18px;
  align-items: center;
  margin: 18px 0;
}

.lock-tongue {
  width: 72px;
  height: 28px;
  background: var(--oak);
  border-radius: 4px;
  position: relative;
}

.lock-tongue::after {
  content: "";
  position: absolute;
  right: -10px;
  top: 6px;
  width: 16px;
  height: 16px;
  background: var(--oak);
  border-radius: 3px;
}

.mill-chip {
  width: 36px;
  height: 18px;
  background: var(--amber);
  clip-path: polygon(0 0, 100% 20%, 80% 100%, 0 80%);
  opacity: 0.85;
}

.cold-violet {
  color: var(--violet);
}

.cup-bow {
  height: 40px;
}

.bound-list {
  columns: 2;
  margin: 0;
  padding-left: 18px;
}

.roll {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.roll th,
.roll td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid rgba(196, 138, 74, 0.25);
}

.roll th {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--oak);
}

.foot {
  position: relative;
  z-index: 2;
  padding: 28px 40px 48px;
  max-width: 1080px;
  margin: 0 auto;
  color: var(--mute);
  font-size: 14px;
}

@media (max-width: 860px) {
  .nav-toggle {
    display: block;
  }

  .lamp-nav {
    display: none;
    position: absolute;
    top: 58px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: #1a0d28;
    padding: 12px 18px 18px;
    gap: 10px;
  }

  .lamp-nav.open {
    display: flex;
  }

  .plank-row,
  .three,
  .line-head,
  .split,
  .bound-list {
    grid-template-columns: 1fr;
    columns: 1;
  }

  .hero,
  .coat-line,
  .foot {
    padding-left: 18px;
    padding-right: 18px;
  }

  .river-shot img {
    height: 220px;
  }
}