:root {
  --straw: #f0e2c4;
  --straw-2: #e4d1a8;
  --bean: #5a3a22;
  --bean-deep: #3a2416;
  --silk: #c9a227;
  --ammo: #b8860b;
  --ink: #2a1c12;
  --mute: #6e5a44;
  --ok: #4a6a3a;
  --late: #8a2a1a;
  --serif: "Noto Serif SC", "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: 86px;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--straw);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
}

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

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

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

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

code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: rgba(90, 58, 34, 0.08);
  padding: 0.05em 0.4em;
}

.straw {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 2;
  opacity: 0.16;
  background-image: url("images/texture.webp");
  background-size: 340px auto;
  mix-blend-mode: multiply;
}

.threads {
  position: fixed;
  left: 0;
  right: 0;
  top: 52px;
  height: 80px;
  z-index: 3;
  pointer-events: none;
  opacity: 0.35;
}

.threads path {
  fill: none;
  stroke: var(--silk);
  stroke-width: 1.4;
}

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

.skip:focus {
  left: 12px;
  top: 12px;
  z-index: 70;
  background: var(--bean);
  color: var(--straw);
  padding: 8px 12px;
}

.tray-bar {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 28px;
  background: rgba(240, 226, 196, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(90, 58, 34, 0.18);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--serif);
  font-weight: 700;
}

.brand small {
  display: block;
  font-family: var(--mono);
  font-weight: 400;
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--mute);
}

.dot {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--bean);
  color: var(--straw);
  font-family: var(--serif);
}

.nav-toggle {
  display: none;
  background: var(--straw);
  border: 1px solid var(--bean);
  color: var(--bean);
  padding: 6px 12px;
  border-radius: 999px;
}

.tray-nav {
  display: flex;
  gap: 14px;
  font-size: 14px;
  align-items: center;
}

.tray-nav a {
  color: var(--mute);
}

.tray-nav a.is-active,
.tray-nav a:hover {
  color: var(--bean);
}

.tray-nav .live {
  color: var(--straw);
  background: var(--bean);
  padding: 6px 14px;
  border-radius: 999px;
}

.hero {
  display: flex;
  flex-direction: column;
}

.hero > img {
  width: 100%;
  height: 54vh;
  object-fit: cover;
  border-bottom: 6px solid var(--bean);
}

.hero-card {
  width: min(860px, calc(100% - 48px));
  margin: -72px auto 0;
  position: relative;
  z-index: 5;
  background: #f7edd6;
  padding: 36px 36px 40px;
  border-radius: 28px 28px 8px 8px;
  box-shadow: 0 18px 40px rgba(58, 36, 22, 0.16);
}

.kicker,
.vlabel {
  font-family: var(--mono);
  letter-spacing: 0.16em;
  font-size: 12px;
  color: var(--ammo);
  margin: 0 0 12px;
}

h1,
h2,
h3 {
  font-family: var(--serif);
  font-weight: 700;
  line-height: 1.12;
  margin: 0 0 14px;
}

h1 {
  font-size: clamp(32px, 5vw, 58px);
}

h2 {
  font-size: clamp(24px, 3vw, 36px);
}

h3 {
  font-size: 20px;
}

.lead {
  color: var(--mute);
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0;
}

.chip {
  font-family: var(--mono);
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(90, 58, 34, 0.08);
}

.chip.warn {
  background: rgba(184, 134, 11, 0.22);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.btn {
  display: inline-flex;
  align-items: center;
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid var(--bean);
  font-size: 14px;
}

.btn-fill {
  background: var(--bean);
  color: var(--straw);
}

.btn-ghost {
  background: transparent;
}

.tray {
  width: min(1080px, calc(100% - 48px));
  margin: 0 auto;
  padding: 84px 0;
}

.tray-head {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 20px;
  margin-bottom: 32px;
}

.tray-head p:last-child {
  margin: 0;
  color: var(--mute);
}

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

#value .bean-row {
  grid-template-columns: repeat(4, 1fr);
}

.bean-row article {
  background: #f7edd6;
  border-radius: 18px;
  padding: 20px;
}

.stamp {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--ammo);
}

.stamp.warn {
  color: var(--late);
}

.bean-row ul,
.io-pair ul,
.rule-list {
  margin: 0;
  padding-left: 1.1em;
}

.bean-row li,
.io-pair li,
.rule-list li {
  margin: 0.32em 0;
}

.steam-band {
  background: var(--straw-2);
}

.pull {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: center;
  margin-bottom: 52px;
}

.pull.flip {
  direction: rtl;
}

.pull.flip > * {
  direction: ltr;
}

.idx {
  font-family: var(--mono);
  color: var(--ammo);
  letter-spacing: 0.14em;
  font-size: 12px;
}

.pull figure {
  margin: 0;
  border-radius: 40% 12px 40% 12px;
  overflow: hidden;
  background: var(--bean-deep);
}

.pull figure img {
  width: 100%;
  height: 280px;
  object-fit: cover;
}

.pull figcaption {
  color: #f0e2c4;
  font-size: 12px;
  padding: 8px 12px 12px;
}

.dial {
  margin-top: 14px;
  padding: 12px;
  border: 1px dashed var(--bean);
  border-radius: 16px;
  background: rgba(247, 237, 214, 0.7);
}

.dial-label {
  margin: 0 0 8px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--mute);
}

.slider {
  display: grid;
  grid-template-columns: 28px 1fr 64px;
  gap: 8px;
  align-items: center;
  font-size: 13px;
}

.slider input {
  width: 100%;
  accent-color: var(--silk);
}

.tri-state {
  margin: 8px 0 0;
  font-family: var(--mono);
  font-size: 13px;
}

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

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

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

.round-row {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 10px;
}

.round-row article {
  background: #f7edd6;
  border-radius: 50% 50% 12px 12px;
  min-height: 150px;
  padding: 22px 12px;
  text-align: center;
}

.rule-list {
  max-width: 46em;
}

.io-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.io-pair > div {
  background: #f7edd6;
  border-radius: 18px;
  padding: 20px;
}

footer {
  padding: 28px;
  font-size: 13px;
  color: var(--mute);
}

@media (max-width: 900px) {
  .hero-card {
    margin-top: -36px;
    padding: 24px;
  }

  .hero > img {
    height: 40vh;
  }

  .tray-head,
  .bean-row,
  .pull,
  .round-row,
  .io-pair,
  #value .bean-row {
    grid-template-columns: 1fr;
  }

  .pull.flip {
    direction: ltr;
  }

  .round-row {
    grid-template-columns: 1fr 1fr;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .tray-nav {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    flex-direction: column;
    background: #f7edd6;
    padding: 12px 20px 20px;
    gap: 10px;
  }

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