:root {
  --paper: #e9eef1;   --paper-2: #dde6ea;  --sky: #dfe7e6;    --film: #d9e5e3;
  --shallow: #bcd4d2; --mid: #8fb3b8;      --deep: #456b76;   --abyss: #1f2e35;
  --marge: #cdd9b5;   --silt: #6b5a3e;     --silt-dk: #2e2719;
  --reed: #47663a;    --reed-dk: #29401f;  --duckweed: #c3cc33; --rust: #8f4724;
  --ink: #1b2118;     --ink-soft: #4f5c60; --rule: #c2ced3;    --rule-dk: #3a4c55;
  --edge: #6d7a80;
  --serif: ui-serif, Georgia, "Iowan Old Style", "Times New Roman", serif;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --gap: clamp(72px, 9vw, 132px);
  --pad: clamp(20px, 5vw, 56px);
  --max: 1180px;
}

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 clamp(1rem, 0.97rem + 0.15vw, 1.06rem)/1.62 var(--sans);
  -webkit-text-size-adjust: 100%;
}

h1, h2, h3 { font-family: var(--serif); font-weight: 600; line-height: 1.08; margin: 0; }
h1 { font-size: clamp(2.2rem, 4.3vw, 3.35rem); letter-spacing: -0.015em; }
h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); letter-spacing: -0.01em; }
h3 { font-size: 1.15rem; line-height: 1.25; }
h1, h2, h3, .silt { text-wrap: balance; }
p { margin: 0 0 1em; text-wrap: pretty; }
b { font-weight: 600; }
[hidden] { display: none !important; }

:focus-visible { outline: 3px solid var(--rust); outline-offset: 2px; }
.band:focus-visible { outline-color: var(--reed-dk); }
.sec-deep :focus-visible, .foot :focus-visible, .b-bed:focus-visible { outline-color: var(--duckweed); }

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 60;
  background: var(--duckweed); color: var(--ink); padding: 12px 16px;
  font: 0.75rem/1 var(--mono); letter-spacing: 0.1em; text-transform: uppercase;
}
.skip:focus { left: 10px; top: 10px; }

.wrap { max-width: var(--max); margin-inline: auto; padding-inline: var(--pad); }
.dateline, .chip, .ctl-label, .tag, .band-depth, .silt {
  font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.13em; text-transform: uppercase;
}

.masthead {
  position: sticky; top: 0; z-index: 30;
  background: var(--sky); border-bottom: 1px solid var(--rule);
}
.mast-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.mark { width: 28px; height: 24px; fill: none; stroke: var(--deep); stroke-width: 1.7; stroke-linecap: round; }
.mark-reed { stroke: var(--reed); }
.brand-name { font-family: var(--serif); font-size: 1.1rem; }
.nav ul { display: flex; gap: clamp(12px, 2vw, 26px); list-style: none; margin: 0; padding: 0; }
.nav a {
  display: block; padding: 6px 0; color: var(--ink); text-decoration: none;
  font: 0.71rem/1 var(--mono); letter-spacing: 0.11em; text-transform: uppercase;
  border-bottom: 2px solid transparent;
}
.nav a:hover { border-bottom-color: var(--duckweed); }
.nav-toggle { display: none; }

.fold { background: linear-gradient(var(--sky), var(--film)); padding-block: clamp(34px, 5vw, 66px) var(--gap); }
.fold-grid { display: grid; gap: clamp(30px, 4vw, 54px); align-items: center; }
.dateline { color: var(--ink-soft); margin: 0 0 18px; }
.standfirst { max-width: 40ch; margin: 22px 0 0; color: #38464b; font-size: 1.06em; }
.fold-links { display: flex; flex-wrap: wrap; gap: 10px 22px; margin: 28px 0 0; }
.fold-links a {
  color: var(--reed-dk); text-decoration: none; padding-bottom: 3px;
  font: 0.71rem/1 var(--mono); letter-spacing: 0.11em; text-transform: uppercase;
  border-bottom: 2px solid var(--duckweed);
}
.fold-links a:hover { background: var(--duckweed); }

.basin-fig { margin: 0; }
.ripple {
  display: block; width: 100%; height: 14px; fill: none;
  stroke: var(--deep); stroke-width: 1.6; opacity: 0.5;
}
.basin { margin-top: -2px; }
.band {
  display: grid; grid-template-columns: 1fr auto; column-gap: 16px; align-items: baseline;
  margin-inline: auto; padding: 11px clamp(14px, 2vw, 22px); border: 0; text-align: left;
  color: var(--ink); background: var(--marge);
}
.band-name { font-family: var(--serif); font-size: 1.05rem; }
.band-depth { color: #3f4a3c; }
.band-note { grid-column: 1 / -1; font-size: 0.78rem; margin-top: 3px; }
.b-margin { width: 100%; }
.b-shelf { width: 94%; background: var(--shallow); }
.b-open { width: 80%; background: var(--mid); }
.b-bed { width: 62%; background: var(--deep); color: var(--paper); }
.b-shelf .band-depth { color: #33484a; }
.b-open .band-depth { color: #23343a; }
.b-bed .band-depth { color: #e8f1f2; }
.silt {
  width: 56%; margin: 0 auto; padding: 8px 12px; text-align: center;
  background: var(--silt-dk); color: #ded3bb; font-size: 0.6rem;
  border-radius: 0 0 90px 90px / 0 0 26px 26px;
}
.band[role="button"] { cursor: pointer; }
.band[role="button"]:hover { filter: brightness(1.04); }
.band[aria-pressed="true"] { box-shadow: inset 0 0 0 3px var(--reed-dk); }
.b-bed[aria-pressed="true"] { box-shadow: inset 0 0 0 3px var(--duckweed); }
.basin-fig figcaption {
  max-width: 46ch; margin-top: 18px; font-size: 0.82rem; color: #38464b;
  border-left: 2px solid var(--duckweed); padding-left: 12px;
}

.sec { padding-block: var(--gap); scroll-margin-top: 62px; }
.sec-paper { background: var(--paper); }
.sec-shallow { background: var(--film); }
.sec-silt { background: var(--paper-2); }
.sec-deep { background: var(--abyss); color: #dfe7e6; }
.sec-head {
  display: flex; justify-content: space-between; align-items: baseline; gap: 16px;
  border-bottom: 1px solid var(--rule); padding-bottom: 10px; margin: 0 0 clamp(18px, 2.5vw, 30px);
}
.sec-head .dateline { margin: 0; }
.chip { color: var(--ink-soft); }
.sec-deep .sec-head { border-color: var(--rule-dk); }
.sec-deep .dateline, .sec-deep .chip { color: #9db6bb; }
.lede { max-width: 56ch; margin: 18px 0 0; color: #38464b; }
.sec-deep .lede { color: #b9ccd0; }

.prose { margin-top: clamp(20px, 3vw, 34px); }
.prose p { max-width: 66ch; }
.note {
  margin-top: 26px; max-width: 58ch; font-size: 0.88rem; color: #a9c0c4;
  border-left: 2px solid var(--duckweed); padding-left: 14px;
}

.disc { border-top: 1px solid var(--rule); max-width: 66ch; }
.disc:first-of-type { margin-top: 34px; }
.disc summary {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 14px 0; cursor: pointer; list-style: none; color: var(--reed-dk);
  font: 0.73rem/1.3 var(--mono); letter-spacing: 0.11em; text-transform: uppercase;
}
.disc summary::-webkit-details-marker { display: none; }
.disc summary::after { content: "+"; font-size: 1.2rem; line-height: 1; }
.disc[open] summary::after { content: "\2212"; }
.disc p { margin: 0 0 18px; font-size: 0.95rem; }

.tablist { display: flex; flex-wrap: wrap; border-bottom: 1px solid var(--rule); margin-top: clamp(24px, 3vw, 38px); }
.tablist button {
  padding: 13px 18px; background: none; border: 0; border-bottom: 3px solid transparent;
  color: var(--ink-soft); cursor: pointer;
  font: 0.72rem/1 var(--mono); letter-spacing: 0.12em; text-transform: uppercase;
}
.tablist button:hover { color: var(--reed-dk); }
.tablist button[aria-selected="true"] {
  color: var(--reed-dk); border-bottom-color: var(--duckweed); background: #ffffff5c;
}
.season { padding-top: 24px; }
.season h3 { margin-bottom: 10px; }
.season p { max-width: 62ch; margin: 0; }
.season + .season { padding-top: 30px; }

.tiers { list-style: none; margin: clamp(26px, 3vw, 40px) 0 0; padding: 0; counter-reset: tier; }
.tiers li {
  display: grid; grid-template-columns: 3rem minmax(9rem, 13rem) 1fr; gap: 2px 20px;
  align-items: baseline; padding: 14px 0; border-top: 1px solid var(--rule-dk);
}
.tiers li::before {
  counter-increment: tier; content: counter(tier, decimal-leading-zero);
  font: 0.7rem/1 var(--mono); letter-spacing: 0.1em; color: var(--duckweed);
}
.tiers b { font-family: var(--serif); font-size: 1.05rem; font-weight: 500; }
.tiers span { color: #b9ccd0; font-size: 0.92rem; }

.controls { display: flex; flex-wrap: wrap; gap: 14px clamp(20px, 3vw, 40px); margin-top: clamp(22px, 3vw, 34px); }
.ctl-group { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; }
.ctl-label { color: var(--ink-soft); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chips button {
  font: 500 0.83rem/1.2 var(--sans); padding: 7px 13px; border-radius: 2px;
  border: 1px solid var(--edge); background: transparent; color: var(--ink); cursor: pointer;
}
.chips button:hover { border-color: var(--reed); background: #ffffff66; }
.chips button[aria-pressed="true"] { background: var(--reed-dk); border-color: var(--reed-dk); color: var(--paper); }
.status {
  margin: 20px 0 0; padding-top: 12px; border-top: 1px solid var(--rule);
  font: 0.71rem/1.5 var(--mono); letter-spacing: 0.1em; color: var(--ink-soft);
}
.entries { list-style: none; margin: 0; padding: 0; }
.entries li { border-bottom: 1px solid var(--rule); padding: 16px 0; break-inside: avoid; }
.entries b { font-family: var(--serif); font-size: 1.08rem; }
.entries i { color: var(--ink-soft); font-size: 0.9rem; }
.entries p { margin: 6px 0 0; max-width: 46ch; font-size: 0.93rem; color: #38464b; }
.tag { display: block; margin-top: 5px; color: var(--reed); }
.entries li[data-kind="wildlife"] .tag { color: var(--rust); }
.tag::before {
  content: ""; display: inline-block; width: 0.5em; height: 0.5em;
  margin-right: 0.6em; background: currentColor;
}

.foot { background: var(--silt-dk); color: #e4ddcd; padding-block: clamp(44px, 6vw, 78px); }
.foot-grid { display: grid; gap: 28px; }
.foot-brand { font-family: var(--serif); font-size: 1.35rem; margin: 0; }
.foot-brand span {
  display: block; margin-top: 8px; color: #b9ae94;
  font: 0.7rem/1 var(--mono); letter-spacing: 0.13em;
}
.foot nav ul { list-style: none; margin: 0; padding: 0; }
.foot a {
  display: inline-block; padding: 5px 0; color: #e4ddcd; text-decoration: none;
  font: 0.71rem/1 var(--mono); letter-spacing: 0.11em; text-transform: uppercase;
  border-bottom: 1px solid var(--silt);
}
.foot a:hover { border-bottom-color: var(--duckweed); color: #fff; }
.foot-note { margin: 0; max-width: 48ch; font-size: 0.87rem; color: #c7bda8; }

@media (min-width: 900px) {
  .fold-grid { grid-template-columns: 1.02fr 0.98fr; }
  .two-col { columns: 2; column-gap: clamp(30px, 3.4vw, 50px); }
  .two-col p { max-width: none; margin: 0 0 1.1em; }
  .entries { columns: 2; column-gap: clamp(30px, 4vw, 60px); }
  .foot-grid { grid-template-columns: 1fr 1fr 1.3fr; gap: 44px; }
}

@media (min-width: 1100px) {
  .standfirst { max-width: 44ch; }
}

@media (max-width: 780px) {
  .nav-toggle {
    display: flex; align-items: center; gap: 9px; padding: 9px 13px; border-radius: 2px;
    border: 1px solid var(--edge); background: transparent; color: var(--ink); cursor: pointer;
    font: 0.71rem/1 var(--mono); letter-spacing: 0.11em; text-transform: uppercase;
  }
  .bars {
    display: block; width: 16px; height: 2px; background: currentColor;
    box-shadow: 0 5px currentColor, 0 -5px currentColor;
  }
  .nav {
    position: absolute; left: 0; right: 0; top: 100%; display: none;
    background: var(--sky); border-bottom: 1px solid var(--rule); padding: 4px var(--pad) 16px;
  }
  .nav[data-open="true"] { display: block; }
  .nav ul { flex-direction: column; gap: 0; }
  .nav a { padding: 13px 0; border-bottom: 1px solid var(--rule); }
  .nav a:hover { border-bottom-color: var(--rule); color: var(--reed-dk); }
}

@media (max-width: 560px) {
  .b-shelf { width: 97%; }
  .b-open { width: 90%; }
  .b-bed { width: 80%; }
  .silt { width: 72%; }
  .band-note { font-size: 0.74rem; }
  .tablist button { padding: 11px 12px; font-size: 0.68rem; letter-spacing: 0.08em; }
  .tiers li { grid-template-columns: 2.2rem 1fr; }
  .tiers span { grid-column: 2; }
  .sec-head { flex-direction: column; gap: 6px; }
}

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
  .band, .chips button, .nav a, .fold-links a, .foot a, .tablist button { transition: all 0.18s ease; }
}