/* 248 Anthems — Grayhawk, Talon Course · "The Field Guide"
 * Naturalist's-plate modernism: a paper-white page, plates framed in double
 * hairlines, one line grammar for every drawing (thin contour, stipple,
 * hairline annotation), mono captions set like specimen entries.
 * Brand System v2 tokens throughout. Support tints — Sonoran dusk terracotta
 * (annotation leaders, plate numbers) and palo verde green (vegetation
 * stipple, green washes) — appear as thin marks only. Lime is the signal.
 * Orange appears exactly once: the correction. */

/* ---------- fonts (relative to css/) ---------- */
@font-face {
  font-family: 'Barlow Condensed';
  src: url('../fonts/barlow-condensed-latin-500-normal.woff2') format('woff2');
  font-weight: 500; font-display: swap;
}
@font-face {
  font-family: 'Barlow Condensed';
  src: url('../fonts/barlow-condensed-latin-600-normal.woff2') format('woff2');
  font-weight: 600; font-display: swap;
}
@font-face {
  font-family: 'Barlow Condensed';
  src: url('../fonts/barlow-condensed-latin-700-normal.woff2') format('woff2');
  font-weight: 700; font-display: swap;
}
@font-face {
  font-family: 'Inter Variable';
  src: url('../fonts/inter-latin-wght-normal.woff2') format('woff2-variations');
  font-weight: 100 900; font-display: swap;
}
@font-face {
  font-family: 'Plex Mono';
  src: url('../fonts/ibm-plex-mono-latin-400-normal.woff2') format('woff2');
  font-weight: 400; font-display: swap;
}
@font-face {
  font-family: 'Plex Mono';
  src: url('../fonts/ibm-plex-mono-latin-500-normal.woff2') format('woff2');
  font-weight: 500; font-display: swap;
}

/* ---------- tokens ---------- */
:root {
  --bone: #F6F3EC;            /* page — desert paper */
  --bone-tint: #F0ECE2;       /* the field-guide band */
  --paper: #FCFAF6;           /* plate ground */
  --graphite: #1E1E1E;
  --charcoal: #0D0D0D;
  --ash: #DAD4C8;
  --ink: #23211D;
  --ink-dim: #5E594F;         /* AA on bone and on paper */
  --lime: #CCFF00;
  --orange: #FF6A00;          /* the one moment: the correction */
  --terracotta: #A2563A;      /* Sonoran dusk — annotation leaders, plate numbers */
  --paloverde: #6C7A44;       /* palo verde — vegetation stipple, green washes */

  --font-display: 'Barlow Condensed', 'Arial Narrow', sans-serif;
  --font-text: 'Inter Variable', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'Plex Mono', ui-monospace, 'SF Mono', monospace;

  --maxw: 1360px;
  --gutter: clamp(1rem, 5vw, 4.5rem);
  --hair: color-mix(in srgb, var(--graphite) 15%, transparent);
  --beat: .536s;              /* 60 / 112 s */
}

/* ---------- base ---------- */
* { box-sizing: border-box; margin: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-text);
  font-variation-settings: 'wght' 420;
  background: var(--bone);
  color: var(--ink);
  font-size: clamp(0.98rem, 0.93rem + 0.25vw, 1.07rem);
  line-height: 1.58;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
.mono { font-family: var(--font-mono); font-weight: 500; letter-spacing: .1em; }
::selection { background: var(--lime); color: var(--graphite); }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--graphite); outline-offset: 3px; }
.anthems :focus-visible { outline-color: var(--lime); }
h1, h2, h3 { font-family: var(--font-display); font-weight: 600; line-height: 1; text-transform: uppercase; letter-spacing: .005em; }
em { font-style: normal; border-bottom: 2px solid var(--lime); }
strong { font-variation-settings: 'wght' 620; font-weight: 400; }
.container { max-width: var(--maxw); margin: 0 auto; padding-inline: var(--gutter); }

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  background: var(--lime); color: var(--graphite);
  padding: .8rem 1.2rem; font-family: var(--font-mono); text-decoration: none;
}
.skip:focus { left: 0; }

/* ---------- masthead ---------- */
.masthead {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between; gap: 1.2rem;
  padding: .75rem var(--gutter);
  background: color-mix(in srgb, var(--bone) 92%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--hair);
}
.masthead-mark { display: inline-flex; align-items: baseline; gap: .45rem; text-decoration: none; font-family: var(--font-display); }
.mark-num { background: var(--graphite); color: var(--bone); font-weight: 700; font-size: 1.05rem; padding: .1em .3em .12em; letter-spacing: .02em; }
.mark-word { font-weight: 600; letter-spacing: .3em; font-size: .82rem; }
.masthead-nav { display: flex; gap: clamp(.85rem, 2.4vw, 2rem); }
.masthead-nav a {
  text-decoration: none; font-size: .84rem; font-variation-settings: 'wght' 560;
  color: var(--ink-dim); padding-bottom: .15em;
  border-bottom: 2px solid transparent;
  transition: color .18s ease, border-color .18s ease;
}
.masthead-nav a:hover { color: var(--ink); border-color: var(--lime); }
.masthead-meta { font-size: .62rem; color: var(--ink-dim); display: inline-flex; align-items: center; gap: .55em; white-space: nowrap; }
.beat-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--ash); transition: background .5s ease; }
body.is-playing .beat-dot { background: var(--lime); box-shadow: 0 0 0 1px var(--graphite); animation: dot-beat 1.071s ease-in-out infinite; }
@keyframes dot-beat { 0%, 100% { transform: scale(1); } 28% { transform: scale(1.4); } }
@media (max-width: 900px) { .masthead-meta { display: none; } }

/* ---------- ratio stripe (24 + 8 = 32 units) ---------- */
.stripe { display: flex; gap: 3px; height: 22px; }
.stripe span { flex: 1; background: color-mix(in srgb, var(--graphite) 14%, transparent); transition: background .3s ease; }
.stripe span.u-down { background: color-mix(in srgb, var(--lime) 40%, var(--bone)); }
.stripe span.lit { background: var(--graphite); }
.stripe span.u-down.lit { background: var(--lime); }
.stripe-dark span { background: color-mix(in srgb, var(--bone) 13%, transparent); }
.stripe-dark span.u-down { background: color-mix(in srgb, var(--lime) 22%, transparent); }
.stripe-dark span.lit { background: var(--bone); }
.stripe-dark span.u-down.lit { background: var(--lime); }
.stripe-caption { display: flex; justify-content: space-between; gap: 1rem; font-size: .6rem; color: var(--ink-dim); margin-top: .55rem; }

/* ---------- hero ---------- */
.hero { padding: clamp(5.5rem, 11vh, 8.5rem) var(--gutter) clamp(3rem, 6vh, 5rem); max-width: var(--maxw); margin: 0 auto; }
.crumb { font-size: .64rem; color: var(--ink-dim); margin-bottom: clamp(1.8rem, 5vh, 3.2rem); }
.crumb a { text-decoration: none; }
.crumb a:hover { color: var(--ink); border-bottom: 1px solid var(--lime); }
.crumb [aria-current] { color: var(--ink); }
.hero-kicker { font-size: .7rem; color: var(--ink-dim); display: flex; align-items: center; gap: 1rem; margin-bottom: 1.1rem; }
.hero-kicker::before { content: ''; width: 44px; height: 2px; background: var(--graphite); flex: none; }
.hero h1 {
  font-weight: 700;
  font-size: clamp(3.9rem, 13.5vw, 10.5rem);
  line-height: .88; letter-spacing: .002em;
  color: var(--charcoal);
}
.h1-sub {
  display: flex; align-items: center; gap: clamp(.7rem, 1.8vw, 1.4rem);
  font-size: .215em; font-weight: 600; letter-spacing: .34em;
  color: var(--graphite); margin-top: .28em; padding-left: .12em;
}
.h1-sub::before, .h1-sub::after { content: ''; height: 1px; background: var(--graphite); flex: none; }
.h1-sub::before { width: clamp(18px, 4vw, 54px); }
.h1-sub::after { flex: 1; opacity: .28; }
.hero-sub {
  margin-top: 1.7rem; max-width: 62ch;
  font-size: clamp(1.01rem, 1.35vw, 1.18rem); line-height: 1.6;
  color: #3B382F;
}

/* index of named features */
.index-card {
  margin-top: clamp(2.4rem, 5.5vh, 3.6rem);
  border: 1px solid var(--ash); background: var(--paper);
}
.index-head { font-size: .6rem; color: var(--ink-dim); padding: .8rem 1.1rem; border-bottom: 1px solid var(--ash); }
.index-list { list-style: none; margin: 0; padding: 0; }
.index-list li + li { border-top: 1px solid color-mix(in srgb, var(--ash) 65%, transparent); }
.index-list a {
  display: grid; grid-template-columns: 5.4rem minmax(9rem, 1fr) auto 1.6rem;
  align-items: baseline; gap: .6rem 1.2rem;
  padding: .78rem 1.1rem; text-decoration: none;
  transition: background .2s ease;
}
.index-list a:hover { background: color-mix(in srgb, var(--terracotta) 6%, var(--paper)); }
.ix-no { font-size: .64rem; color: var(--terracotta); }
.ix-name { font-family: var(--font-display); font-weight: 600; text-transform: uppercase; font-size: clamp(1.15rem, 2vw, 1.6rem); line-height: 1; color: var(--charcoal); }
.ix-note { font-size: .58rem; color: var(--ink-dim); }
.ix-arrow { color: var(--ink-dim); justify-self: end; transition: transform .2s ease, color .2s ease; }
.index-list a:hover .ix-arrow { transform: translateX(4px); color: var(--ink); }
.hero .stripe { margin-top: clamp(2.4rem, 5.5vh, 3.6rem); }

/* ---------- section scaffolding (scoped by class, never bare `section`) ---------- */
.anthems, .system, .uses, .fieldguide, .related { padding-block: clamp(3.6rem, 8.5vh, 7rem); }
.sec-head { display: flex; align-items: center; gap: 1.1rem; margin-bottom: clamp(1.6rem, 4vh, 2.6rem); }
.sec-no { font-size: .78rem; color: var(--ink-dim); }
.sec-rule { flex: 1; height: 1px; background: var(--hair); }
.sec-kicker { font-size: .66rem; color: var(--ink-dim); }
.sec-intro h2 { font-size: clamp(2.4rem, 5.4vw, 4.2rem); color: var(--charcoal); max-width: 20ch; }
.sec-sub { margin-top: 1.05rem; max-width: 70ch; color: #3B382F; }

/* ---------- 01 · anthems (dark panel) ---------- */
.anthems { background: var(--charcoal); color: var(--bone); }
.anthems .sec-no, .anthems .sec-kicker { color: color-mix(in srgb, var(--bone) 55%, transparent); }
.anthems .sec-rule { background: color-mix(in srgb, var(--bone) 16%, transparent); }
.anthems .sec-intro h2 { color: var(--bone); }
.anthems .sec-sub { color: color-mix(in srgb, var(--bone) 74%, transparent); }
.anthems em { border-bottom-color: var(--lime); }
.player-shell {
  position: relative; margin-top: clamp(1.8rem, 4.5vh, 2.8rem);
  background: var(--graphite);
  border: 1px solid color-mix(in srgb, var(--bone) 13%, transparent);
  border-top: 3px solid color-mix(in srgb, var(--bone) 13%, transparent);
  padding: clamp(1.1rem, 3vw, 2.3rem);
  transition: border-top-color .6s ease;
}
body.is-playing .player-shell { border-top-color: var(--lime); }
#rim { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; opacity: .55; }
#player { position: relative; }
.anthems .ap {
  --ap-accent: var(--lime);
  --ap-accent-fg: var(--charcoal);
  --ap-font: var(--font-text);
  --ap-radius: 0; --ap-row-radius: 0;
}
.anthems .ap-title { font-family: var(--font-display); text-transform: uppercase; font-weight: 600; letter-spacing: .01em; font-size: clamp(1.45rem, 3vw, 2.15rem); }
.anthems .ap-kicker, .anthems .ap-panel-title, .anthems .ap-time, .anthems .ap-row-num,
.anthems .ap-badge, .anthems .ap-lib-course, .anthems .ap-sub, .anthems .ap-status { font-family: var(--font-mono); }
.anthems .ap-sub, .anthems .ap-status { font-size: .72rem; letter-spacing: .06em; }
.progress-wrap { position: relative; margin-top: 1.4rem; }
.progress-wrap .stripe { height: 18px; }
.progress-wrap .stripe-caption { color: color-mix(in srgb, var(--bone) 45%, transparent); }
.stage-note { margin-top: 1rem; font-size: .6rem; color: color-mix(in srgb, var(--bone) 42%, transparent); text-align: center; }

/* ---------- 02 · system ---------- */
.system-grid { display: grid; grid-template-columns: 5fr 7fr; gap: clamp(1.4rem, 3.5vw, 3rem); margin-top: clamp(1.6rem, 4vh, 2.4rem); align-items: start; }
.frames-ribbon { border: 1px solid var(--hair); padding: 1.1rem; background: var(--paper); }
.frames { display: flex; gap: 3px; height: 30px; }
.frames.down { margin-top: 3px; }
.frames span { flex: 1; background: var(--graphite); opacity: .09; transition: opacity .18s ease; }
.frames.down span { background: var(--lime); opacity: .22; }
.frames span.lit { opacity: .92; }
.frames.down span.lit { opacity: 1; }
.frames-caption { display: flex; justify-content: space-between; font-size: .58rem; color: var(--ink-dim); margin-top: .6rem; }
.pulse-block {
  margin-top: 1px; background: var(--graphite); color: var(--bone);
  padding: clamp(1.2rem, 2.5vw, 2rem);
  display: grid; justify-items: center; gap: .6rem;
}
.pulse-ring { width: min(210px, 58vw); height: auto; }
.pulse-ring .pr-outer { stroke: color-mix(in srgb, var(--bone) 30%, transparent); stroke-width: 1; }
.pulse-ring .pr-inner { stroke: var(--lime); stroke-width: 1.6; }
.pulse-ring .pr-num { font-family: var(--font-display); font-weight: 600; font-size: 34px; fill: var(--bone); }
.pulse-ring .pr-unit { font-family: var(--font-mono); font-size: 10px; letter-spacing: .35em; fill: color-mix(in srgb, var(--bone) 58%, transparent); }
#pulse-ticks line { stroke: color-mix(in srgb, var(--bone) 38%, transparent); stroke-width: 1; }
#pulse-ticks line.q { stroke: var(--lime); stroke-width: 1.6; }
.pulse-core { transform-origin: 100px 100px; }
body:not(.is-playing) .pulse-core { animation: breathe 1.071s ease-in-out infinite; }
@keyframes breathe { 0%, 100% { transform: scale(1); } 30% { transform: scale(1.05); } }
.pulse-caption { font-size: .56rem; color: color-mix(in srgb, var(--bone) 50%, transparent); text-align: center; }
.method-cards { display: grid; gap: 1px; background: var(--hair); border: 1px solid var(--hair); }
.method-card { background: var(--paper); padding: clamp(1.25rem, 2.6vw, 2rem); }
.method-card h3 { font-size: 1.5rem; display: flex; gap: .8rem; align-items: baseline; margin-bottom: .7rem; }
.card-no { font-size: .62rem; color: var(--ink-dim); }
.method-card p { color: #3B382F; font-size: .95rem; max-width: 64ch; }
.footnote { margin-top: 1rem; padding-top: .7rem; border-top: 1px dashed var(--hair); font-size: .62rem !important; letter-spacing: .04em; line-height: 1.7; color: var(--ink-dim) !important; font-weight: 400; }

/* ---------- 03 · uses ---------- */
.uses { padding-top: 0; }
.uses-grid {
  list-style: none; padding: 0; margin: clamp(1.5rem, 4vh, 2.2rem) 0 0;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px;
  background: var(--hair); border: 1px solid var(--hair);
}
.use { background: var(--bone); padding: clamp(1.2rem, 2.4vw, 1.8rem); }
.use-no { display: block; font-size: .6rem; color: var(--ink-dim); margin-bottom: 1.5rem; }
.use h3 { font-size: 1.42rem; margin-bottom: .45rem; }
.use p { font-size: .92rem; color: #3B382F; max-width: 42ch; }

/* ---------- 04 · the field guide ---------- */
.fieldguide { position: relative; background: var(--bone-tint); border-top: 1px solid var(--hair); }
.fg-contours { position: absolute; inset: 0; overflow: hidden; pointer-events: none; }
.fg-contours svg { width: 100%; height: 100%; display: block; }
#contour-lines path { fill: none; stroke: var(--graphite); stroke-width: 1.1; opacity: .13; }
#contour-lines path.cn-soft { stroke: var(--paloverde); opacity: .18; }
body.is-playing #contour-lines { animation: contour-pulse 2.143s ease-in-out infinite; }
@keyframes contour-pulse { 0%, 100% { opacity: 1; } 50% { opacity: .5; } }
.fg-inner { position: relative; }

/* key to the plates — the line grammar, declared once */
.plate-key {
  margin-top: clamp(1.6rem, 3.5vh, 2.4rem);
  border-top: 1px solid var(--ash); border-bottom: 1px solid var(--ash);
  padding: .9rem 0;
}
.pk-title { font-size: .58rem; color: var(--ink-dim); margin-bottom: .7rem; }
.pk-list { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: .5rem clamp(1.1rem, 2.6vw, 2.4rem); }
.pk-list li { display: flex; align-items: center; gap: .55rem; }
.pk-list svg { width: 46px; height: 12px; flex: none; }
.pk-list span { font-size: .55rem; color: var(--ink-dim); letter-spacing: .09em; }

.plates { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(1rem, 2vw, 1.6rem); margin-top: clamp(1.4rem, 3vh, 2rem); }
.plate-wide { grid-column: 1 / -1; }
.plate {
  position: relative; margin: 0; scroll-margin-top: 5.5rem;
  background: color-mix(in srgb, var(--paper) 93%, transparent);
  border: 1px solid var(--ash);
  padding: clamp(1.1rem, 2.2vw, 1.7rem);
  display: flex; flex-direction: column;
}
.plate::after {
  content: ''; position: absolute; inset: 6px; pointer-events: none;
  border: 1px solid color-mix(in srgb, var(--ash) 55%, transparent);
}
.plate-head { padding-bottom: .9rem; border-bottom: 1px solid var(--ash); }
.plate-no { display: block; font-size: .6rem; color: var(--terracotta); margin-bottom: .5rem; }
.plate-head h3 { font-size: clamp(1.75rem, 3.2vw, 2.6rem); color: var(--charcoal); }
.plate-meta { font-size: .57rem; color: var(--ink-dim); margin-top: .45rem; letter-spacing: .07em; }
.pan-hint { display: none; }
.plate-art { padding: clamp(.7rem, 1.6vw, 1.3rem) 0 .3rem; min-width: 0; }
.plate-art svg { display: block; width: 100%; height: auto; }
.plate-cap { margin-top: auto; padding-top: .9rem; border-top: 1px solid color-mix(in srgb, var(--ash) 70%, transparent); }
.plate-cap p { font-size: .93rem; color: #33302A; max-width: 66ch; }
.cap-lead { font-family: var(--font-display); font-weight: 600; text-transform: uppercase; letter-spacing: .06em; font-size: 1.06em; color: var(--charcoal); margin-right: .3em; }
.plate-cap a { color: var(--ink); text-decoration: none; border-bottom: 2px solid var(--lime); }
.plate-cap a:hover { background: color-mix(in srgb, var(--lime) 35%, transparent); }
.plate-note { margin-top: .8rem; font-size: .57rem !important; color: var(--ink-dim); line-height: 1.7; }
.plate-quiet .plate-art { opacity: .96; }

/* — the one line grammar — */
.pl-contour { fill: none; stroke: var(--graphite); stroke-width: 1; opacity: .42; stroke-linecap: round; }
.pl-edge { fill: none; stroke: var(--graphite); stroke-width: 1.5; opacity: .78; stroke-linecap: round; }
.pl-far { fill: none; stroke: var(--graphite); stroke-width: 1.1; opacity: .35; stroke-linejoin: round; }
.pl-ground { fill: none; stroke: var(--graphite); stroke-width: 1.7; stroke-linejoin: round; }
.pl-fill { fill: color-mix(in srgb, var(--graphite) 5%, transparent); stroke: none; }
.pl-rock line { stroke: var(--graphite); stroke-width: .8; opacity: .34; }
.pl-wash { fill: none; stroke: var(--graphite); stroke-width: 1; opacity: .35; stroke-dasharray: 9 6; }
.pl-green { fill: color-mix(in srgb, var(--paloverde) 20%, transparent); stroke: var(--graphite); stroke-width: 1.4; }
.pl-bunker { fill: var(--bone); stroke: var(--graphite); stroke-width: 1.2; }
.pl-sand circle { fill: var(--graphite); opacity: .34; }
.pl-stipple circle { fill: var(--paloverde); opacity: .38; }
.pl-tee { fill: var(--graphite); stroke: var(--graphite); stroke-width: 1; }
.pl-hair { fill: none; stroke: var(--terracotta); stroke-width: .85; opacity: .9; }
.pl-brace { fill: none; stroke: var(--terracotta); stroke-width: .85; opacity: .9; }
.pl-mark path, .pl-mark circle { fill: none; stroke: var(--graphite); stroke-width: 1.4; }
.pl-label { font-family: var(--font-mono); font-weight: 500; font-size: 10px; letter-spacing: .1em; fill: var(--ink-dim); }
.pl-label-key { fill: var(--ink); }
.pl-dash-safe { fill: none; stroke: var(--graphite); stroke-width: 1.7; stroke-dasharray: 3 6; stroke-linecap: round; opacity: .72; }
.pl-ring { fill: none; stroke: var(--graphite); stroke-width: 1.7; }
.pl-arrow { fill: var(--graphite); opacity: .72; stroke: none; }
.pl-target { fill: var(--lime); stroke: var(--graphite); stroke-width: 1.5; }
.pl-flag { fill: none; stroke: var(--graphite); stroke-width: 1.3; }
.pl-flag-cloth { fill: var(--lime); stroke: var(--graphite); stroke-width: 1; }
.pl-water { fill: url(#hatch17); stroke: var(--graphite); stroke-width: 1.3; }
.pl-hatch-line { fill: none; stroke: var(--graphite); stroke-width: .55; opacity: .45; }
.pl-deck { fill: none; stroke: var(--graphite); stroke-width: 2.2; }
.pl-tower { fill: none; stroke: var(--graphite); stroke-width: 1.8; }
.pl-cable { fill: none; stroke: var(--graphite); stroke-width: 1.2; }
.pl-hanger line { stroke: var(--graphite); stroke-width: .7; opacity: .6; }
.pl-stair { fill: none; stroke: var(--graphite); stroke-width: 1.4; stroke-dasharray: 4 3; }
/* commit line: lime core inside a graphite casing, so the signal survives on paper */
.pl-case { fill: none; stroke: var(--graphite); stroke-width: 5; stroke-dasharray: 9 7; }
.pl-commit { fill: none; stroke: var(--lime); stroke-width: 2.6; stroke-dasharray: 9 7; }

/* draw-on */
.plate-art svg .draw { stroke-dasharray: 1; stroke-dashoffset: 1; }
.plate.in .plate-art svg .draw { stroke-dashoffset: 0; transition: stroke-dashoffset 1.5s cubic-bezier(.4, 0, .2, 1) .05s; }
.plate-art svg .d2 { transition-delay: .3s !important; }
.plate-art svg .d3 { transition-delay: .55s !important; }
.plate-art svg .pl-green.draw, .plate-art svg .pl-bunker.draw,
.plate-art svg .pl-water.draw, .plate-art svg .pl-tee.draw { fill-opacity: 0; }
.plate.in .plate-art svg .pl-green.draw, .plate.in .plate-art svg .pl-bunker.draw,
.plate.in .plate-art svg .pl-water.draw, .plate.in .plate-art svg .pl-tee.draw {
  fill-opacity: 1; transition: stroke-dashoffset 1.5s cubic-bezier(.4, 0, .2, 1) .05s, fill-opacity .8s ease .9s;
}
.plate-art svg .pl-fill, .plate-art svg .pl-sand, .plate-art svg .pl-stipple,
.plate-art svg .pl-rock, .plate-art svg .pl-hanger { opacity: 0; }
.plate.in .plate-art svg .pl-fill, .plate.in .plate-art svg .pl-sand,
.plate.in .plate-art svg .pl-stipple, .plate.in .plate-art svg .pl-rock,
.plate.in .plate-art svg .pl-hanger { opacity: 1; transition: opacity .9s ease .8s; }
.plate-art svg .pl-case, .plate-art svg .pl-commit, .plate-art svg .pl-dash-safe,
.plate-art svg .pl-hair, .plate-art svg .pl-brace, .plate-art svg .pl-target,
.plate-art svg .pl-ring, .plate-art svg .pl-label, .plate-art svg .pl-wash,
.plate-art svg .pl-flag-cloth, .plate-art svg .pl-mark, .plate-art svg .pl-arrow { opacity: 0; }
.plate.in .plate-art svg .pl-case, .plate.in .plate-art svg .pl-commit,
.plate.in .plate-art svg .pl-dash-safe, .plate.in .plate-art svg .pl-hair,
.plate.in .plate-art svg .pl-brace, .plate.in .plate-art svg .pl-target,
.plate.in .plate-art svg .pl-ring, .plate.in .plate-art svg .pl-label,
.plate.in .plate-art svg .pl-wash, .plate.in .plate-art svg .pl-flag-cloth,
.plate.in .plate-art svg .pl-mark { opacity: 1; transition: opacity .8s ease 1s; }
.plate.in .plate-art svg .pl-hair, .plate.in .plate-art svg .pl-brace { opacity: .9; }
.plate.in .plate-art svg .pl-wash { opacity: .35; }
.plate.in .plate-art svg .pl-dash-safe, .plate.in .plate-art svg .pl-arrow { opacity: .72; }
.plate.in .plate-art svg .pl-arrow { transition: opacity .8s ease 1s; }

/* — the record — */
.record { margin-top: clamp(2.4rem, 5.5vh, 3.6rem); }
.rec-title { font-size: clamp(1.9rem, 3.6vw, 2.7rem); display: flex; gap: .9rem; align-items: baseline; margin-bottom: 1.4rem; }
.rec-no { font-size: .66rem; color: var(--ink-dim); }
.rec-grid { border-top: 1px solid var(--ash); }
.rec-row { display: grid; grid-template-columns: minmax(180px, 250px) 1fr; gap: .4rem 2rem; padding: .85rem 0; border-bottom: 1px solid var(--ash); }
.rec-row dt { font-size: .63rem; color: var(--ink-dim); padding-top: .3em; }
.rec-row dd { margin: 0; font-size: .95rem; }
.rec-note {
  margin-top: 2rem; max-width: 78ch;
  border-left: 3px solid var(--orange);
  background: var(--paper);
  padding: 1.3rem clamp(1.1rem, 3vw, 1.9rem);
}
.rec-note-kicker { display: block; font-size: .62rem; color: var(--orange); margin-bottom: .6rem; }
.rec-note p:last-child { font-size: .95rem; color: #33302A; }

/* ---------- 05 · related ---------- */
.related { border-top: 1px solid var(--hair); }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--hair); border: 1px solid var(--hair); margin-top: clamp(1.5rem, 4vh, 2.2rem); }
.rel-card {
  position: relative; background: var(--bone); text-decoration: none;
  padding: clamp(1.4rem, 2.8vw, 2.2rem); min-height: 185px;
  display: flex; flex-direction: column; justify-content: flex-end; gap: .3rem;
  transition: background .25s ease;
}
.rel-card:hover { background: var(--paper); }
.rel-no { position: absolute; top: 1.2rem; left: 1.4rem; font-size: .6rem; color: var(--ink-dim); }
.rel-card h3 { font-size: clamp(1.6rem, 2.6vw, 2.2rem); color: var(--charcoal); }
.rel-card p { font-size: .58rem; color: var(--ink-dim); }
.rel-arrow { position: absolute; top: 1.05rem; right: 1.4rem; font-size: 1.1rem; color: var(--ink-dim); transition: transform .25s ease, color .25s ease; }
.rel-card:hover .rel-arrow { transform: translateX(5px); color: var(--ink); }

/* ---------- footer ---------- */
.footer { border-top: 1px solid var(--hair); padding-block: clamp(2.2rem, 5vh, 3.4rem); }
.footer .stripe { margin-bottom: 2.1rem; height: 16px; }
.footer-cols { display: flex; justify-content: space-between; gap: 2rem; flex-wrap: wrap; align-items: flex-end; }
.footer-line { margin-top: 1rem; font-variation-settings: 'wght' 560; }
.footer-sub { font-size: .6rem; color: var(--ink-dim); margin-top: .4rem; }
.footer-links { display: grid; gap: .8rem; font-size: .64rem; justify-items: end; }
.footer-links a { text-decoration: none; color: var(--ink-dim); border-bottom: 1px solid var(--hair); padding-bottom: .15em; }
.footer-links a:hover { color: var(--ink); border-color: var(--lime); }
@media (max-width: 700px) { .footer-links { justify-items: start; } }

/* ---------- reveals ---------- */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity .7s ease, transform .7s cubic-bezier(.2, .7, .2, 1); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .system-grid { grid-template-columns: 1fr; }
}
@media (max-width: 900px) {
  .uses-grid { grid-template-columns: 1fr 1fr; }
  /* minmax(0,…) not 1fr: a bare 1fr track takes the plate's min-content width,
     which the wide plate art would push past the viewport */
  .plates { grid-template-columns: minmax(0, 1fr); }
  .index-list a { grid-template-columns: 5rem 1fr 1.4rem; }
  .ix-note { grid-column: 2 / 3; }
}
@media (max-width: 760px) {
  .related-grid { grid-template-columns: 1fr; }
  .rel-card { min-height: 0; padding-top: 2.6rem; }
  .rec-row { grid-template-columns: 1fr; }
}
@media (max-width: 700px) {
  /* mono annotation must stay legible: plates pan inside their frame */
  .plate-art { overflow-x: auto; }
  .plate-art svg { min-width: 470px; }
  .plate-wide .plate-art svg { min-width: 760px; }
  .pan-hint { display: block; font-size: .52rem; color: var(--ink-dim); margin-top: .5rem; text-align: center; }
}
@media (max-width: 600px) {
  .uses-grid { grid-template-columns: 1fr; }
  .masthead-nav a { font-size: .78rem; }
  .h1-sub { letter-spacing: .26em; }
}
@media (max-width: 400px) {
  .mark-word { display: none; }
}

/* ---------- reduced motion: fully composed, fully drawn ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .plate-art svg .draw { stroke-dashoffset: 0 !important; transition: none !important; }
  .plate-art svg .pl-green.draw, .plate-art svg .pl-bunker.draw,
  .plate-art svg .pl-water.draw, .plate-art svg .pl-tee.draw { fill-opacity: 1; transition: none; }
  .plate-art svg .pl-fill, .plate-art svg .pl-sand, .plate-art svg .pl-stipple,
  .plate-art svg .pl-rock, .plate-art svg .pl-hanger,
  .plate-art svg .pl-case, .plate-art svg .pl-commit, .plate-art svg .pl-target,
  .plate-art svg .pl-ring, .plate-art svg .pl-label, .plate-art svg .pl-flag-cloth,
  .plate-art svg .pl-mark { opacity: 1; transition: none; }
  .plate-art svg .pl-hair, .plate-art svg .pl-brace { opacity: .9; transition: none; }
  .plate-art svg .pl-wash { opacity: .35; transition: none; }
  .plate-art svg .pl-dash-safe, .plate-art svg .pl-arrow { opacity: .72; transition: none; }
  body:not(.is-playing) .pulse-core { animation: none; }
  body.is-playing .beat-dot { animation: none; }
  body.is-playing #contour-lines { animation: none; }
  .masthead, .sec-rule, .player-shell, .beat-dot, .rel-card, .rel-arrow,
  .stripe span, .index-list a, .ix-arrow, .reveal { transition: none; }
}