/* ════════════════════════════════════════════════════════
   FIELD NOTEBOOK · 野外记录本
   A stratigraphic personal site for Yuan Zhao
   ════════════════════════════════════════════════════════ */

/* ── Tokens ── */
:root {
  /* paper */
  --bg:        #f2eee3;
  --bg-elev:   #f9f6ed;
  --grid-line: rgba(120, 108, 84, 0.10);
  --ink:       #1d1a14;
  --ink-soft:  #4d473c;
  --ink-mute:  #8d8474;
  --rule:      #d4ccb8;
  --rule-soft: #e3dcc9;

  /* geological palette */
  --accent:    #b04f24;            /* iron oxide red */
  --accent-2:  #38606b;            /* map teal */
  --selection: rgba(176, 79, 36, .22);

  /* strata colours (geological map style) */
  --strat-1: #d9a566;
  --strat-2: #b9c29a;
  --strat-3: #9db5b2;
  --strat-4: #c89e8e;
  --strat-5: #a99fc0;
  --strat-6: #ddc06f;

  /* type */
  --f-display: "Fraunces", "Times New Roman", serif;
  --f-sans:    "Inter", -apple-system, sans-serif;
  --f-mono:    "JetBrains Mono", ui-monospace, monospace;
  --f-cjk:     "Noto Serif SC", "Songti SC", serif;
  --f-cjk-sans:"Noto Sans SC", "PingFang SC", sans-serif;

  --maxw: 1080px;
  --gutter: 28px;
  --strata-w: 56px;

  --sp: 1;                          /* density multiplier */
}

[data-density="compact"] { --sp: .78; }
[data-density="airy"]    { --sp: 1.25; }

/* dark = field work at night */
[data-theme="dark"] {
  --bg:        #15140f;
  --bg-elev:   #1d1b15;
  --grid-line: rgba(190, 178, 150, 0.07);
  --ink:       #ece6d6;
  --ink-soft:  #bdb5a1;
  --ink-mute:  #7c7565;
  --rule:      #2e2b22;
  --rule-soft: #262318;
  --selection: rgba(217, 122, 78, .3);
}

/* typeset switch */
[data-typeset="serif"] { --f-body: var(--f-display); --f-body-cjk: var(--f-cjk); }
[data-typeset="sans"]  { --f-body: var(--f-sans);    --f-body-cjk: var(--f-cjk-sans); }
[data-typeset="mono"]  { --f-body: var(--f-mono);    --f-body-cjk: var(--f-cjk-sans); }

/* section visibility */
[data-hide-skills="true"]     #skills     { display: none; }
[data-hide-experience="true"] #experience { display: none; }
[data-hide-writing="true"]    #writing    { display: none; }
[data-hide-skills="true"]     .strata-seg[data-for="skills"],
[data-hide-experience="true"] .strata-seg[data-for="experience"],
[data-hide-writing="true"]    .strata-seg[data-for="writing"] { display: none; }

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  background: var(--bg);
  color: var(--ink);
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  transition: background 280ms ease, color 280ms ease;
}

/* squared-paper grid, like a field notebook */
body {
  min-height: 100vh;
  overflow-x: hidden;
  font-family: var(--f-body, var(--f-display));
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 32px 32px;
  cursor: none;
}
@media (max-width: 860px) { body { cursor: auto; } }

::selection { background: var(--selection); color: inherit; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }

.cn {
  display: block;
  font-family: var(--f-body-cjk, var(--f-cjk));
  color: var(--ink-mute);
  font-weight: 300;
}

/* ── Crosshair cursor ── */
.cursor-h, .cursor-v, .cursor-ring {
  position: fixed; top: 0; left: 0;
  pointer-events: none; z-index: 9999;
  will-change: transform;
}
.cursor-h { width: 18px; height: 1px; background: var(--accent); }
.cursor-v { width: 1px; height: 18px; background: var(--accent); }
.cursor-ring {
  width: 34px; height: 34px;
  border: 1px solid var(--ink-mute);
  border-radius: 50%;
  opacity: .5;
  transition: width 200ms ease, height 200ms ease,
              border-color 200ms ease, opacity 200ms ease;
}
.cursor-ring.active {
  width: 50px; height: 50px;
  border-color: var(--accent);
  opacity: .9;
}
@media (max-width: 860px) { .cursor-h, .cursor-v, .cursor-ring { display: none; } }

/* ── Strata navigation (left rail) ── */
.strata-nav {
  position: fixed;
  left: 0; top: 0; bottom: 0;
  width: var(--strata-w);
  z-index: 60;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--rule);
  background: color-mix(in oklab, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.strata-seg {
  flex: 1;
  position: relative;
  border-bottom: 1px solid var(--rule);
  overflow: hidden;
  transition: flex-grow 400ms cubic-bezier(.2,.7,.2,1);
  display: block;
  width: 100%;
}
.strata-seg:last-child { border-bottom: none; }
.strata-seg .fill {
  position: absolute; inset: 0;
  opacity: .18;
  transition: opacity 300ms ease;
}
.strata-seg[data-active="true"] { flex-grow: 2.2; }
.strata-seg[data-active="true"] .fill { opacity: .55; }
.strata-seg:hover .fill { opacity: .4; }
.strata-seg .seg-label {
  position: absolute;
  left: 50%; top: 50%;
  transform: translate(-50%, -50%) rotate(180deg);
  writing-mode: vertical-rl;
  font-family: var(--f-mono);
  font-size: 9.5px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--ink-soft);
  white-space: nowrap;
  opacity: 0;
  transition: opacity 280ms ease;
}
.strata-seg[data-active="true"] .seg-label,
.strata-seg:hover .seg-label { opacity: 1; }

/* lithology hatch patterns per segment */
.strata-seg[data-for="hero"]       .fill { background: var(--strat-1); }
.strata-seg[data-for="about"]      .fill {
  background: repeating-linear-gradient(45deg, var(--strat-2) 0 4px, transparent 4px 9px);
}
.strata-seg[data-for="skills"]     .fill {
  background: repeating-linear-gradient(0deg, var(--strat-3) 0 3px, transparent 3px 8px);
}
.strata-seg[data-for="projects"]   .fill {
  background: repeating-linear-gradient(90deg, var(--strat-4) 0 3px, transparent 3px 8px);
}
.strata-seg[data-for="experience"] .fill {
  background: repeating-linear-gradient(-45deg, var(--strat-5) 0 4px, transparent 4px 9px);
}
.strata-seg[data-for="writing"]    .fill {
  background:
    repeating-linear-gradient(45deg, var(--strat-6) 0 2px, transparent 2px 10px),
    repeating-linear-gradient(-45deg, var(--strat-6) 0 2px, transparent 2px 10px);
}
.strata-seg[data-for="contact"]    .fill { background: var(--accent); }

@media (max-width: 860px) {
  .strata-nav { display: none; }
}

/* ── Page shell ── */
.shell {
  margin-left: var(--strata-w);
}
@media (max-width: 860px) { .shell { margin-left: 0; } }

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ── Top bar ── */
.topbar {
  position: fixed;
  top: 0; left: var(--strata-w); right: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--bg) 82%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 240ms ease;
}
.topbar.scrolled { border-bottom-color: var(--rule); }
@media (max-width: 860px) { .topbar { left: 0; } }

.topbar-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 13px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--f-display);
  font-size: 16px;
}
.brand .mark {
  width: 10px; height: 10px;
  background: var(--accent);
  transform: rotate(45deg);
  flex-shrink: 0;
}
.brand .cn { display: inline; font-size: 13px; }
.top-links {
  display: flex; align-items: center; gap: 18px;
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.top-links a { transition: color 160ms ease; }
.top-links a:hover { color: var(--accent); }
.theme-toggle {
  border: 1px solid var(--rule);
  padding: 6px 12px;
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink-soft);
  transition: border-color 200ms ease, color 200ms ease;
}
.theme-toggle:hover { border-color: var(--accent); color: var(--ink); }
@media (max-width: 640px) { .top-links .hide-sm { display: none; } }

/* ── Depth marker (between sections) ── */
.depth-marker {
  display: flex;
  align-items: center;
  gap: 14px;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: .18em;
  color: var(--ink-mute);
  text-transform: uppercase;
}
.depth-marker::before,
.depth-marker::after {
  content: "";
  height: 1px;
  background: var(--rule);
}
.depth-marker::before { flex: 0 0 28px; }
.depth-marker::after { flex: 1; }
.depth-marker .tick { color: var(--accent); }

/* ── Section scaffolding ── */
section { position: relative; }
.sec-pad {
  padding-top: calc(96px * var(--sp));
  padding-bottom: calc(96px * var(--sp));
}
.sec-head {
  display: flex;
  align-items: baseline;
  gap: 18px;
  margin-bottom: calc(48px * var(--sp));
}
.sec-num {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--accent);
}
.sec-title {
  font-family: var(--f-display);
  font-weight: 350;
  font-size: clamp(26px, 3.6vw, 40px);
  letter-spacing: -0.01em;
}
.sec-title .cn {
  display: inline;
  font-size: .55em;
  margin-left: 14px;
  vertical-align: 2px;
}

/* ── Hero ── */
.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}

/* contour-line backdrop */
.contours {
  position: absolute;
  inset: -10%;
  z-index: 0;
  opacity: .5;
  pointer-events: none;
}
[data-theme="dark"] .contours { opacity: .3; }
.contours svg { width: 100%; height: 100%; }
.contours path {
  fill: none;
  stroke: var(--ink-mute);
  stroke-width: .8;
  opacity: .35;
}
.contours path.index-line { stroke: var(--accent); stroke-width: 1.1; opacity: .45; }

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: clamp(32px, 6vw, 80px);
  align-items: center;
}
@media (max-width: 860px) { .hero-grid { grid-template-columns: 1fr; } }

.hero-coords {
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: .2em;
  color: var(--ink-mute);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 28px;
}
.hero-coords .dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 var(--selection); }
  50%       { box-shadow: 0 0 0 7px transparent; }
}

.hero-name {
  font-family: var(--f-display);
  font-weight: 300;
  font-size: clamp(52px, 9vw, 116px);
  line-height: .98;
  letter-spacing: -0.025em;
  margin-bottom: 8px;
}
.hero-name em {
  font-style: italic;
  color: var(--accent);
}
.hero-name-cn {
  font-family: var(--f-cjk);
  font-weight: 300;
  font-size: clamp(22px, 3vw, 34px);
  color: var(--ink-soft);
  letter-spacing: .35em;
  margin-bottom: calc(30px * var(--sp));
}

.typeline {
  font-family: var(--f-mono);
  font-size: clamp(12px, 1.4vw, 14px);
  color: var(--ink-soft);
  min-height: 1.6em;
  letter-spacing: .02em;
}
.typeline .caret {
  display: inline-block;
  width: 8px; height: 1.1em;
  background: var(--accent);
  vertical-align: text-bottom;
  margin-left: 3px;
  animation: blink 1.05s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.hero-status {
  margin-top: calc(36px * var(--sp));
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-soft);
  border: 1px solid var(--rule);
  padding: 9px 16px;
  background: var(--bg-elev);
  width: fit-content;
}
.hero-status .led {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #5c8a4e;
}

/* portrait — specimen plate */
.specimen {
  position: relative;
  width: min(100%, 340px);
  justify-self: end;
}
@media (max-width: 860px) { .specimen { justify-self: start; } }
.specimen .photo {
  aspect-ratio: 3 / 4;
  background-color: var(--bg-elev);
  background-size: cover;
  background-position: center top;
  border: 1px solid var(--rule);
  position: relative;
  filter: saturate(.92);
}
/* corner registration marks, like a plate in a monograph */
.specimen .photo::before,
.specimen .photo::after {
  content: "";
  position: absolute;
  width: 14px; height: 14px;
  border-color: var(--accent);
  border-style: solid;
}
.specimen .photo::before {
  top: -5px; left: -5px;
  border-width: 1px 0 0 1px;
}
.specimen .photo::after {
  bottom: -5px; right: -5px;
  border-width: 0 1px 1px 0;
}
.specimen .caption {
  margin-top: 12px;
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-mute);
  display: flex;
  justify-content: space-between;
}

.scroll-cue {
  position: absolute;
  bottom: 30px; left: 50%;
  transform: translateX(-50%);
  font-family: var(--f-mono);
  font-size: 9.5px;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--ink-mute);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  z-index: 1;
}
.scroll-cue .line {
  width: 1px; height: 34px;
  background: linear-gradient(var(--ink-mute), transparent);
  animation: drill 1.8s ease-in-out infinite;
}
@keyframes drill {
  0%   { transform: scaleY(0); transform-origin: top; }
  50%  { transform: scaleY(1); transform-origin: top; }
  51%  { transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ── About ── */
.about-grid {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: clamp(36px, 5vw, 72px);
  align-items: start;
}
@media (max-width: 860px) { .about-grid { grid-template-columns: 1fr; } }

.prose-en p {
  font-family: var(--f-body, var(--f-display));
  font-weight: 350;
  font-size: clamp(16px, 1.7vw, 18.5px);
  line-height: 1.75;
  color: var(--ink-soft);
  margin-bottom: 1.4em;
}
.prose-en strong { color: var(--ink); font-weight: 500; }

.prose-cn {
  border-left: 2px solid var(--rule);
  padding-left: clamp(18px, 2.5vw, 30px);
}
.prose-cn p {
  font-family: var(--f-body-cjk, var(--f-cjk));
  font-weight: 300;
  font-size: 15px;
  line-height: 2.05;
  color: var(--ink-soft);
  margin-bottom: 1.5em;
}
.prose-cn strong { color: var(--ink); font-weight: 500; }

/* facts: sample-label cards */
.facts {
  margin-top: calc(14px * var(--sp));
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--rule);
  border-left: 1px solid var(--rule);
}
.fact {
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 14px 16px;
  background: var(--bg-elev);
}
.fact .k {
  font-family: var(--f-mono);
  font-size: 9.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 6px;
}
.fact .v {
  font-size: 14px;
  color: var(--ink);
  line-height: 1.45;
}
.fact .v .cn { font-size: 12px; margin-top: 1px; }

/* ── Skills: map legend ── */
.legend-note {
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin: calc(-28px * var(--sp)) 0 calc(40px * var(--sp));
}
.legend-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(24px, 3.5vw, 48px);
}
@media (max-width: 960px) { .legend-grid { grid-template-columns: 1fr; } }

.legend-col-title {
  font-family: var(--f-display);
  font-size: 19px;
  font-weight: 400;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--ink);
  margin-bottom: 4px;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.legend-col-title .cn { display: inline; font-size: 12.5px; }

.legend-item {
  display: grid;
  grid-template-columns: 30px 1fr auto;
  gap: 14px;
  align-items: center;
  padding: 11px 0;
  border-bottom: 1px solid var(--rule-soft);
}
.legend-swatch {
  width: 30px; height: 20px;
  border: 1px solid var(--ink-soft);
}
.legend-name { font-size: 14px; color: var(--ink); line-height: 1.35; }
.legend-name .cn { font-size: 11.5px; margin-top: 1px; }
.legend-grade {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: .1em;
  color: var(--ink-mute);
  white-space: nowrap;
}
.legend-grade b { color: var(--accent); font-weight: 500; }

/* lithology fills by proficiency level */
.legend-swatch[data-lv="4"] {
  background: repeating-linear-gradient(45deg, var(--accent) 0 3px, transparent 3px 6px);
}
.legend-swatch[data-lv="3"] {
  background: repeating-linear-gradient(0deg, var(--accent-2) 0 2px, transparent 2px 7px);
}
.legend-swatch[data-lv="2"] {
  background:
    radial-gradient(circle at 30% 40%, var(--ink-mute) 1.2px, transparent 1.4px),
    radial-gradient(circle at 70% 70%, var(--ink-mute) 1.2px, transparent 1.4px);
  background-size: 12px 12px;
}
.legend-swatch[data-lv="1"] { background: transparent; }

/* ── Projects: borehole logs ── */
.log {
  border: 1px solid var(--rule);
  border-bottom: none;
  background: var(--bg-elev);
  transition: background 220ms ease;
}
.log:last-of-type { border-bottom: 1px solid var(--rule); }
.log:hover { background: color-mix(in oklab, var(--bg-elev) 70%, var(--bg)); }

.log-head {
  width: 100%;
  display: grid;
  grid-template-columns: 86px 1fr auto 40px;
  gap: clamp(14px, 2.5vw, 30px);
  align-items: center;
  padding: calc(26px * var(--sp)) clamp(18px, 2.5vw, 30px);
  text-align: left;
}
@media (max-width: 720px) {
  .log-head { grid-template-columns: 1fr 40px; }
  .log-id, .log-meta { display: none; }
}

.log-id {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--accent);
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.log-id .yr { color: var(--ink-mute); font-size: 10px; }

.log-title {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: clamp(17px, 2vw, 22px);
  line-height: 1.3;
  letter-spacing: -0.005em;
}
.log-title .cn { font-size: 13px; margin-top: 4px; }

.log-meta {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-mute);
  text-align: right;
}

.log-toggle {
  font-family: var(--f-mono);
  font-size: 18px;
  color: var(--ink-mute);
  text-align: center;
  transition: transform 240ms ease, color 200ms ease;
}
.log[data-open="true"] .log-toggle {
  transform: rotate(45deg);
  color: var(--accent);
}

.log-body { overflow: hidden; }
.log-body-inner {
  margin: 0 clamp(18px, 2.5vw, 30px);
  padding: 20px 0 calc(28px * var(--sp));
  border-top: 1px dashed var(--rule);
}
.log-summary-en {
  font-family: var(--f-body, var(--f-display));
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--ink-soft);
  margin-bottom: 12px;
  max-width: 70ch;
}
.log-summary-cn {
  font-family: var(--f-body-cjk, var(--f-cjk));
  font-weight: 300;
  font-size: 14px;
  line-height: 1.95;
  color: var(--ink-soft);
  margin-bottom: 18px;
  max-width: 70ch;
}
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-soft);
  border: 1px solid var(--rule);
  padding: 5px 10px;
  background: var(--bg);
}

/* ── Experience ── */
.exp-row {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: clamp(18px, 3vw, 40px);
  padding: calc(22px * var(--sp)) 0;
  border-bottom: 1px solid var(--rule-soft);
}
@media (max-width: 640px) { .exp-row { grid-template-columns: 1fr; gap: 6px; } }
.exp-when {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--ink-mute);
  padding-top: 3px;
}
.exp-role { font-size: 16.5px; font-weight: 450; color: var(--ink); }
.exp-role .cn { font-size: 13px; margin-top: 2px; }
.exp-where { margin-top: 5px; font-size: 13.5px; color: var(--ink-mute); }
.exp-where .cn { display: inline; margin-left: 8px; font-size: 12px; }

/* ── Writing ── */
.write-row {
  display: grid;
  grid-template-columns: 92px 1fr 36px;
  gap: clamp(16px, 3vw, 36px);
  align-items: center;
  padding: calc(24px * var(--sp)) 0;
  border-bottom: 1px solid var(--rule-soft);
  transition: padding-left 240ms ease;
}
@media (max-width: 640px) {
  .write-row { grid-template-columns: 1fr 36px; }
  .write-date { display: none; }
}
.write-row:hover { padding-left: 10px; }
.write-row:hover .write-arrow { color: var(--accent); transform: translateX(4px); }
.write-date {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--ink-mute);
}
.write-title {
  font-family: var(--f-cjk);
  font-weight: 400;
  font-size: clamp(17px, 2vw, 21px);
}
.write-sub {
  display: block;
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-top: 5px;
}
.write-arrow {
  font-family: var(--f-mono);
  color: var(--ink-mute);
  transition: color 200ms ease, transform 200ms ease;
}

/* ── Contact ── */
.contact-lead {
  font-family: var(--f-display);
  font-weight: 350;
  font-size: clamp(22px, 3.4vw, 36px);
  line-height: 1.45;
  max-width: 24ch;
}
.contact-lead .cn { font-size: .55em; margin-top: 14px; line-height: 1.9; }

.link-grid {
  margin-top: calc(44px * var(--sp));
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  border-top: 1px solid var(--rule);
  border-left: 1px solid var(--rule);
}
.link-cell {
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 22px 22px 26px;
  background: var(--bg-elev);
  transition: background 200ms ease;
  position: relative;
  overflow: hidden;
}
.link-cell::after {
  content: "↗";
  position: absolute;
  top: 16px; right: 18px;
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--ink-mute);
  transition: color 200ms ease, transform 200ms ease;
}
.link-cell:hover { background: var(--bg); }
.link-cell:hover::after {
  color: var(--accent);
  transform: translate(2px, -2px);
}
.link-name {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}
.link-handle { font-size: 14.5px; color: var(--ink); word-break: break-all; }

/* ── Footer: map cartouche ── */
.cartouche {
  margin-top: calc(60px * var(--sp));
  border-top: 1px solid var(--ink);
}
.cartouche-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 26px var(--gutter) 34px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 20px;
  font-family: var(--f-mono);
  font-size: 9.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.cartouche .cell .k { color: var(--accent); margin-bottom: 5px; }
.cartouche .cell .v { color: var(--ink-soft); line-height: 1.6; letter-spacing: .08em; }

/* scale bar */
.scalebar {
  display: flex;
  align-items: flex-end;
  height: 10px;
  margin-top: 4px;
}
.scalebar i {
  width: 22px; height: 6px;
  border: 1px solid var(--ink-soft);
  border-left: none;
}
.scalebar i:first-child { border-left: 1px solid var(--ink-soft); }
.scalebar i:nth-child(odd) { background: var(--ink-soft); }

/* ── Reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 750ms ease, transform 750ms cubic-bezier(.2,.7,.2,1);
}
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001s !important;
    transition-duration: .001s !important;
  }
}