:root {
  --ink: #f1efe6;
  --muted: rgba(241,239,230,.56);
  --dim: rgba(241,239,230,.13);
  --ground: #09090d;
  --signal: #b9a7ff;
  --hot: #ffb36b;
  color-scheme: dark;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { min-height: 100%; background: var(--ground); }
body {
  min-height: 100svh;
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 76% 17%, rgba(65,48,118,.2), transparent 35%),
    radial-gradient(circle at 18% 70%, rgba(111,61,31,.1), transparent 38%),
    var(--ground);
  color: var(--ink);
  font-family: ui-monospace, "SFMono-Regular", "Cascadia Mono", monospace;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }
#descent-field { position: fixed; inset: 0; z-index: 0; width: 100%; height: 100%; opacity: .76; }
.grain {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: .08;
  background-image: repeating-radial-gradient(circle at 20% 30%, transparent 0, rgba(255,255,255,.12) .45px, transparent .8px, transparent 5px);
  mix-blend-mode: soft-light;
}

.descent-head, main, .descent-foot { position: relative; z-index: 2; }
.descent-head {
  position: fixed;
  inset: 0 0 auto;
  z-index: 4;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: max(25px, env(safe-area-inset-top)) clamp(24px, 4vw, 64px) 0;
  font-size: 10px;
  letter-spacing: .2em;
}
.descent-head > a { font-weight: 600; letter-spacing: .34em; text-decoration: none; }
.study-status { display: flex; align-items: center; gap: 10px; color: var(--muted); }
.study-status i { width: 5px; height: 5px; border-radius: 50%; background: rgba(241,239,230,.3); }
.study-status[data-state="living"] i { background: var(--signal); box-shadow: 0 0 16px rgba(185,167,255,.85); animation: study-pulse 9s ease-in-out infinite; }
.study-status[data-state="delayed"] { color: rgba(255,179,107,.76); }
.study-status[data-state="delayed"] i { background: var(--hot); box-shadow: 0 0 13px rgba(255,179,107,.7); }
@keyframes study-pulse { 0%,100% { opacity: .55; transform: scale(.8); } 48% { opacity: 1; transform: scale(1.25); } }

main { width: min(1240px, calc(100% - 48px)); margin: 0 auto; padding: clamp(130px, 20vh, 210px) 0 150px; }
.kicker { margin: 0 0 23px; color: var(--muted); font-size: 10px; line-height: 1.6; letter-spacing: .18em; text-transform: uppercase; }
.descent-hero { min-height: min(670px, 73svh); }
h1, h2 { font-family: Iowan Old Style, Baskerville, "Times New Roman", serif; font-weight: 400; }
h1 { margin: 0; font-size: clamp(64px, 12.3vw, 176px); line-height: .78; letter-spacing: -.068em; }
h1 span, h1 em { display: block; }
h1 em { margin-left: clamp(35px, 14vw, 220px); color: rgba(241,239,230,.63); font-weight: 400; }
.dek { width: min(570px, 85%); margin: clamp(54px, 8vh, 90px) 0 0 auto; color: rgba(241,239,230,.7); font-family: Iowan Old Style, Baskerville, "Times New Roman", serif; font-size: clamp(20px, 2.2vw, 28px); line-height: 1.52; }

.frontier { margin: 35px 0 clamp(130px, 19vh, 220px); border-top: 1px solid var(--dim); border-bottom: 1px solid var(--dim); background: rgba(9,9,13,.36); backdrop-filter: blur(5px); }
.frontier dl { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); margin: 0; }
.frontier dl div { min-width: 0; padding: 24px 20px 26px; border-left: 1px solid var(--dim); }
.frontier dl div:first-child { border-left: 0; }
.frontier dt { margin-bottom: 14px; color: var(--muted); font-size: 9px; letter-spacing: .13em; text-transform: uppercase; }
.frontier dd { margin: 0; overflow: hidden; font-size: clamp(17px, 2vw, 27px); font-variant-numeric: tabular-nums; text-overflow: ellipsis; white-space: nowrap; }
.frontier small { color: var(--muted); font-size: 9px; text-transform: uppercase; }

.method { display: grid; grid-template-columns: minmax(0, 1fr) minmax(300px, .7fr); gap: clamp(50px, 10vw, 150px); padding: 0 0 clamp(130px, 18vh, 210px); }
.method h2, .ordinary h2, .pulse-ledger h2, .records h2 { margin: 0; font-size: clamp(43px, 6.5vw, 86px); line-height: .96; letter-spacing: -.048em; }
.method__copy { padding-top: 37px; }
.method__copy p { margin: 0 0 1.4em; color: rgba(241,239,230,.63); font-family: Iowan Old Style, Baskerville, "Times New Roman", serif; font-size: clamp(18px, 1.8vw, 22px); line-height: 1.58; }

.ordinary { margin-bottom: clamp(130px, 18vh, 210px); border-top: 1px solid var(--dim); padding-top: 58px; }
.ordinary header { display: grid; grid-template-columns: .58fr .42fr; gap: clamp(40px, 8vw, 120px); align-items: start; }
.ordinary__note { margin: 37px 0 0; color: rgba(241,239,230,.58); font-family: Iowan Old Style, Baskerville, "Times New Roman", serif; font-size: clamp(17px, 1.55vw, 20px); line-height: 1.55; }
.ordinary__plot { margin-top: 78px; border-top: 1px solid var(--dim); border-bottom: 1px solid var(--dim); padding: 20px 0 12px; }
#interval-weather { display: block; width: 100%; height: clamp(170px, 24vw, 270px); }
.ordinary__plot > div { display: flex; justify-content: space-between; margin-top: 9px; color: var(--muted); font-size: 8px; letter-spacing: .14em; text-transform: uppercase; }
.ordinary__summary { margin: 17px 0 0; color: var(--muted); font-size: 10px; line-height: 1.7; letter-spacing: .06em; }

.pulse-ledger { margin-bottom: clamp(130px, 18vh, 210px); border-top: 1px solid var(--dim); padding-top: 58px; }
.pulse-ledger header { display: grid; grid-template-columns: .58fr .42fr; gap: clamp(40px, 8vw, 120px); align-items: start; }
.pulse-ledger__note { margin: 37px 0 0; color: rgba(241,239,230,.58); font-family: Iowan Old Style, Baskerville, "Times New Roman", serif; font-size: clamp(17px, 1.55vw, 20px); line-height: 1.55; }
.pulse-ledger__note a { text-underline-offset: 5px; }
.pulse-ledger ol { margin: 78px 0 0; padding: 0; list-style: none; border-bottom: 1px solid var(--dim); }
.pulse-ledger li { display: grid; grid-template-columns: minmax(108px,.7fr) 1fr 1fr 1fr; gap: 24px; align-items: baseline; padding: 17px 0; border-top: 1px solid var(--dim); color: rgba(241,239,230,.58); font-size: 10px; font-variant-numeric: tabular-nums; letter-spacing: .06em; }
.pulse-ledger li time { color: var(--signal); }
.pulse-ledger li strong { color: var(--ink); font-size: clamp(15px, 1.5vw, 19px); font-weight: 400; letter-spacing: 0; }
.pulse-ledger .pulse-ledger__waiting { display: block; color: var(--muted); font-size: 11px; letter-spacing: .08em; }

.records { border-top: 1px solid var(--dim); padding-top: 58px; }
.records header { display: grid; grid-template-columns: .42fr 1fr; gap: 40px; align-items: start; }
.records ol { margin: 85px 0 0; padding: 0; list-style: none; border-bottom: 1px solid var(--dim); }
.records li { display: grid; grid-template-columns: 54px 1fr 1fr 1.2fr; gap: 25px; align-items: baseline; padding: 18px 0; border-top: 1px solid var(--dim); font-variant-numeric: tabular-nums; }
.records li span:first-child { color: var(--muted); font-size: 9px; }
.records li strong { font-size: clamp(18px, 2vw, 25px); font-weight: 400; }
.records li span { color: rgba(241,239,230,.58); font-size: 10px; letter-spacing: .08em; }
.records li span:last-child { text-align: right; }
.records .records__waiting { display: block; color: var(--muted); font-size: 11px; letter-spacing: .08em; }

.descent-foot { display: flex; justify-content: space-between; gap: 30px; padding: 0 clamp(24px, 4vw, 64px) max(30px, env(safe-area-inset-bottom)); color: rgba(241,239,230,.52); font-size: 9px; letter-spacing: .14em; text-transform: uppercase; }
.descent-foot nav { display: flex; gap: 28px; }
.descent-foot a { text-underline-offset: 6px; }

@media (max-width: 850px) {
  main { width: min(100% - 40px, 680px); }
  .descent-hero { min-height: 70svh; }
  h1 { font-size: clamp(67px, 20vw, 132px); }
  h1 em { margin-left: 8vw; }
  .dek { width: 92%; }
  .frontier dl { grid-template-columns: repeat(2, 1fr); }
  .frontier dl div { border-top: 1px solid var(--dim); }
  .frontier dl div:nth-child(odd) { border-left: 0; }
  .frontier dl div:nth-child(-n+2) { border-top: 0; }
  .method, .ordinary header, .pulse-ledger header, .records header { grid-template-columns: 1fr; gap: 34px; }
  .ordinary__note { margin-top: 0; }
  .pulse-ledger__note { margin-top: 0; }
  .pulse-ledger li { grid-template-columns: 1fr 1fr; }
  .records li { grid-template-columns: 36px 1fr 1fr; }
  .records li span:last-child { display: none; }
  .descent-foot > span { display: none; }
}

@media (max-width: 520px) {
  .descent-head { align-items: flex-start; }
  .study-status { max-width: 170px; justify-content: flex-end; text-align: right; line-height: 1.5; }
  .frontier dl { grid-template-columns: 1fr; }
  .frontier dl div, .frontier dl div:nth-child(-n+2) { border-top: 1px solid var(--dim); border-left: 0; }
  .frontier dl div:first-child { border-top: 0; }
  .pulse-ledger li { gap: 10px 18px; }
  .pulse-ledger li span:last-child { text-align: right; }
  .records li { grid-template-columns: 32px 1fr 1fr; gap: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  .study-status[data-state="living"] i { animation: none; }
}