/* Layout: a sky masthead under Arcadia's six moons that turns from day to night with the
   theme, sinking into a sea of cloud; below it, a narrow reading column whose test
   captures and diagrams break out wider. */
:root {
  /* paper and ink */
  --paper: #f4f7fb;
  --paper-2: #e9eff7;
  --card: #ffffff;
  --ink: #14213a;
  --ink-soft: #52627f;
  --rule: #d6dfeb;
  --rule-strong: #b3c1d6;
  --sapphire: #1c4fb4;
  --sapphire-wash: #dbe7fb;
  --brass: #94661a;
  --danger: #b5412c;
  --danger-wash: #f8e1db;
  --ok: #2f7d4f;
  --code-bg: #e6edf7;
  /* the sky */
  --sky-1: #3f86de;
  --sky-2: #8cc3f2;
  --sky-3: #d9ecfb;
  --cloud: #ffffff;
  --cloud-shade: #d3e4f5;
  --on-sky: #ffffff;
  --on-sky-shadow: rgba(16, 44, 96, 0.45);
  --stars: 0;
  --moon-glow: 0;
  --moon-alpha: 0.55;
  /* Arcadia's moons */
  --moon-red: #c8402f;
  --moon-blue: #2f6fd6;
  --moon-yellow: #c48f0c;
  --moon-green: #2f8f55;
  --moon-purple: #7d4cc0;
  --moon-silver: #7d8a9c;
  /* image labels sit on screenshots, so they keep one look in both themes */
  --tag-bg: rgba(10, 18, 38, 0.78);
  --tag-fg: #f2f6ff;
  /* type */
  --display: "Gloock", "Bodoni 72", "Didot", Georgia, serif;
  --body: "Literata", "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --measure: 40rem;
  --wide: 62rem;
  --gutter: clamp(16px, 4vw, 32px);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0a1227; --paper-2: #0f1a34; --card: #111d3a; --ink: #e2e9f6; --ink-soft: #9aabc8;
    --rule: #22304e; --rule-strong: #3a4c71; --sapphire: #8db6ff; --sapphire-wash: #1a2d57;
    --brass: #e0b55e; --danger: #f2907a; --danger-wash: #3a1f22; --ok: #7fd3a0; --code-bg: #17254a;
    --sky-1: #040a1c; --sky-2: #0f2452; --sky-3: #1d3a72; --cloud: #2c4677; --cloud-shade: #1a2f5c;
    --on-sky: #eef3ff; --on-sky-shadow: rgba(0, 0, 0, 0.5);
    --stars: 1; --moon-glow: 1; --moon-alpha: 1;
    --moon-red: #ff6a52; --moon-blue: #5f9bff; --moon-yellow: #ffd04a; --moon-green: #5fd38a;
    --moon-purple: #b48cff; --moon-silver: #c9d3e2;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0a1227; --paper-2: #0f1a34; --card: #111d3a; --ink: #e2e9f6; --ink-soft: #9aabc8;
  --rule: #22304e; --rule-strong: #3a4c71; --sapphire: #8db6ff; --sapphire-wash: #1a2d57;
  --brass: #e0b55e; --danger: #f2907a; --danger-wash: #3a1f22; --ok: #7fd3a0; --code-bg: #17254a;
  --sky-1: #040a1c; --sky-2: #0f2452; --sky-3: #1d3a72; --cloud: #2c4677; --cloud-shade: #1a2f5c;
  --on-sky: #eef3ff; --on-sky-shadow: rgba(0, 0, 0, 0.5);
  --stars: 1; --moon-glow: 1; --moon-alpha: 1;
  --moon-red: #ff6a52; --moon-blue: #5f9bff; --moon-yellow: #ffd04a; --moon-green: #5fd38a;
  --moon-purple: #b48cff; --moon-silver: #c9d3e2;
  color-scheme: dark;
}

[data-moon="red"] { --moon: var(--moon-red); }
[data-moon="blue"] { --moon: var(--moon-blue); }
[data-moon="yellow"] { --moon: var(--moon-yellow); }
[data-moon="green"] { --moon: var(--moon-green); }
[data-moon="purple"] { --moon: var(--moon-purple); }
[data-moon="silver"] { --moon: var(--moon-silver); }

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 1.0625rem;
  line-height: 1.6;
  font-optical-sizing: auto;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--sapphire); text-underline-offset: 0.18em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--sapphire); outline-offset: 3px; border-radius: 2px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--card); padding: 8px 12px; z-index: 10; }
.skip:focus { left: 12px; }

.eyebrow {
  font-family: var(--mono); font-size: 0.75rem; font-weight: 500;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--brass); margin: 0;
}

/* ------------------------------------------------------------ top bar */
.topbar {
  position: absolute; z-index: 5; left: 0; right: 0;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 14px var(--gutter);
}
.kind-home .topbar { justify-content: flex-end; }
.brand img { height: 52px; width: auto; filter: drop-shadow(0 2px 6px var(--on-sky-shadow)); }
.topbar nav { display: flex; align-items: center; gap: clamp(12px, 3vw, 28px); }
.topbar nav a {
  color: var(--on-sky); text-decoration: none; font-family: var(--mono); font-size: 0.8rem;
  letter-spacing: 0.12em; text-transform: uppercase; text-shadow: 0 1px 6px var(--on-sky-shadow);
  padding-block: 6px; border-bottom: 1px solid transparent;
}
.topbar nav a:hover, .topbar nav a[aria-current="page"] { border-bottom-color: var(--on-sky); }
.theme-toggle {
  display: inline-grid; place-items: center; width: 36px; height: 36px; border-radius: 50%;
  border: 1px solid color-mix(in srgb, var(--on-sky) 45%, transparent); background: transparent;
  color: var(--on-sky); cursor: pointer;
}
.theme-toggle svg { width: 18px; height: 18px; fill: currentColor; }

/* ------------------------------------------------------------ the sky */
.sky {
  position: relative; overflow: hidden; isolation: isolate;
  background: linear-gradient(180deg, var(--sky-1) 0%, var(--sky-2) 52%, var(--sky-3) 100%);
}
.sky-layer { position: absolute; inset: 0; pointer-events: none; }
.sky-layer.moons { top: 58px; }
.stars {
  opacity: var(--stars);
  background-image:
    radial-gradient(1px 1px at 12% 18%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 27% 8%, #fff 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 41% 26%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 63% 12%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 77% 34%, #fff 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 88% 6%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 6% 40%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 52% 40%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 34% 46%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 95% 44%, #fff 50%, transparent 51%);
}
.sky-moon {
  position: absolute; border-radius: 50%; opacity: var(--moon-alpha);
  background: radial-gradient(circle at 35% 32%, color-mix(in srgb, var(--c) 35%, #fff) 0%, var(--c) 55%, color-mix(in srgb, var(--c) 70%, #000) 100%);
  box-shadow: 0 0 calc(var(--moon-glow) * 24px) calc(var(--moon-glow) * 2px) color-mix(in srgb, var(--c) 55%, transparent);
}
.m-red    { --c: var(--moon-red);    width: 30px; height: 30px; left: 9%;  top: 22%; }
.m-blue   { --c: var(--moon-blue);   width: 14px; height: 14px; left: 23%; top: 11%; }
.m-silver { --c: var(--moon-silver); width: 10px; height: 10px; left: 44%; top: 7%; }
.m-yellow { --c: var(--moon-yellow); width: 20px; height: 20px; left: 66%; top: 16%; }
.m-green  { --c: var(--moon-green);  width: 12px; height: 12px; left: 79%; top: 33%; }
.m-purple { --c: var(--moon-purple); width: 40px; height: 40px; left: 88%; top: 11%; }

.cloudsea { top: auto; height: 230px; }
.cloudsea::after {
  content: ""; position: absolute; inset: auto 0 0 0; height: 70px;
  background: linear-gradient(180deg, transparent, var(--paper));
}
.cloud {
  position: absolute; bottom: -30px; border-radius: 50%;
  background: radial-gradient(ellipse at 50% 40%, var(--cloud) 0%, var(--cloud) 38%, var(--cloud-shade) 62%, transparent 72%);
  animation: drift 60s ease-in-out infinite alternate;
}
.c1 { left: -8%;  width: 34%; height: 190px; }
.c2 { left: 18%;  width: 30%; height: 120px; bottom: -40px; animation-duration: 75s; }
.c3 { left: 40%;  width: 36%; height: 210px; animation-duration: 90s; }
.c4 { left: 66%;  width: 30%; height: 130px; bottom: -48px; animation-duration: 70s; }
.c5 { left: 84%;  width: 32%; height: 200px; animation-duration: 82s; }
.c6 { left: 6%;   width: 46%; height: 110px; bottom: -70px; animation-duration: 96s; }
.c7 { left: 52%;  width: 50%; height: 110px; bottom: -72px; animation-duration: 66s; }
@keyframes drift { from { transform: translateX(-2.5%); } to { transform: translateX(2.5%); } }
@media (prefers-reduced-motion: reduce) { .cloud { animation: none; } }

/* home hero */
.sky-home { padding: 76px var(--gutter) 190px; }
.hero {
  position: relative; z-index: 1; max-width: 72rem; margin-inline: auto;
  display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); gap: clamp(20px, 4vw, 56px);
  align-items: center;
}
.hero-logo { margin: 0; }
.hero-logo img { width: 100%; max-width: 680px; filter: drop-shadow(0 10px 24px var(--on-sky-shadow)); }
.hero-copy { color: var(--on-sky); text-shadow: 0 1px 10px var(--on-sky-shadow); display: grid; gap: 12px; }
.hero-copy .eyebrow { color: var(--on-sky); opacity: 0.9; }
.hero-lede { margin: 0; font-size: clamp(1.15rem, 2.2vw, 1.45rem); line-height: 1.5; font-style: italic; max-width: 26rem; text-wrap: pretty; }

/* thin band over posts and pages */
.sky-band { height: 230px; }
.sky-band .cloud { bottom: -50px; }
.sky-band .sky-moon { transform: scale(0.8); }
.sky-band .cloudsea { height: 150px; }

/* ------------------------------------------------------------ home */
.home-main { max-width: 72rem; margin-inline: auto; padding: 0 var(--gutter) 72px; display: grid; gap: 64px; }
.feature { margin-top: -110px; position: relative; z-index: 2; }
.feature-card {
  display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: clamp(18px, 3vw, 40px);
  align-items: center; padding: clamp(12px, 2vw, 18px); text-decoration: none; color: inherit;
  background: var(--card); border: 1px solid var(--rule); border-radius: 6px;
  box-shadow: 0 18px 40px -24px rgba(10, 30, 70, 0.45);
}
.feature-media { min-width: 0; }
.feature-media .cover-img, .feature-media .cover-moon { border-radius: 3px; width: 100%; }
.feature-text { min-width: 0; display: grid; gap: 12px; padding-right: clamp(0px, 2vw, 20px); }
.feature-text h2 { font-family: var(--display); font-weight: 400; font-size: clamp(1.8rem, 3.6vw, 2.6rem); line-height: 1.08; margin: 0; text-wrap: balance; }
.feature-card:hover h2 { color: var(--sapphire); }
.dek { margin: 0; color: var(--ink-soft); font-size: 1.08rem; line-height: 1.55; text-wrap: pretty; }
.meta { margin: 0; display: flex; flex-wrap: wrap; align-items: center; gap: 6px 14px; font-family: var(--mono); font-size: 0.78rem; color: var(--ink-soft); }
.log-no { color: var(--ink); font-weight: 500; }
.draft-pill {
  border: 1px solid var(--brass); color: var(--brass); border-radius: 999px;
  padding: 0 8px; font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase;
}

.moon-chip {
  display: inline-flex; align-items: center; gap: 7px; font-family: var(--mono); font-size: 0.75rem;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-soft);
}
.moon-sep { opacity: 0.6; }
.moon-dot {
  width: 11px; height: 11px; border-radius: 50%; flex: none;
  background: radial-gradient(circle at 35% 32%, color-mix(in srgb, var(--moon) 30%, #fff), var(--moon) 65%);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--moon) 40%, transparent);
}

.cover-img { aspect-ratio: 4 / 3; object-fit: cover; }
.cover-moon {
  position: relative; aspect-ratio: 4 / 3; overflow: hidden; border-radius: 3px;
  background: linear-gradient(180deg, var(--sky-1), var(--sky-2) 60%, var(--sky-3));
}
.cover-disc {
  position: absolute; width: 46%; aspect-ratio: 1; right: 12%; top: 14%; border-radius: 50%;
  background: radial-gradient(circle at 35% 32%, color-mix(in srgb, var(--moon) 30%, #fff), var(--moon) 58%, color-mix(in srgb, var(--moon) 70%, #000));
  box-shadow: 0 0 calc(10px + var(--moon-glow) * 30px) color-mix(in srgb, var(--moon) 50%, transparent);
  opacity: calc(0.75 + var(--moon-alpha) * 0.25);
}
.cover-num {
  position: absolute; left: 8%; top: 8%; z-index: 1; font-family: var(--display); font-size: clamp(2.6rem, 7vw, 4.4rem);
  line-height: 1; color: var(--on-sky); text-shadow: 0 2px 12px var(--on-sky-shadow);
}
.cover-cloud {
  position: absolute; left: -10%; right: -10%; bottom: -30%; height: 55%; border-radius: 50%;
  background: radial-gradient(ellipse at 50% 30%, var(--cloud) 30%, var(--cloud-shade) 60%, transparent 72%);
}

.logbook { display: grid; gap: 20px; }
.logbook-head { display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between; gap: 12px 24px; border-bottom: 1px solid var(--rule-strong); padding-bottom: 14px; }
.logbook-head h2 { font-family: var(--display); font-weight: 400; font-size: 2rem; margin: 0; }
.filters { display: flex; flex-wrap: wrap; gap: 8px; }
.filter {
  display: inline-flex; align-items: center; gap: 7px; font: inherit; font-family: var(--mono); font-size: 0.75rem;
  letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-soft); cursor: pointer;
  background: transparent; border: 1px solid var(--rule-strong); border-radius: 999px; padding: 5px 12px;
}
.filter[aria-pressed="true"] { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.log-list { list-style: none; margin: 0; padding: 0; }
.log-row + .log-row { border-top: 1px solid var(--rule); }
.log-row a {
  display: grid; grid-template-columns: 4.5rem minmax(0, 1fr) 13rem; gap: clamp(14px, 3vw, 32px);
  align-items: start; padding-block: 26px; color: inherit; text-decoration: none;
}
.row-no { font-family: var(--display); font-size: 3.4rem; line-height: 0.9; color: var(--moon, var(--ink-soft)); }
.log-row[data-topic] .row-no { color: var(--ink-soft); }
.row-body { display: grid; gap: 8px; min-width: 0; }
.row-title { font-family: var(--display); font-size: clamp(1.45rem, 2.6vw, 1.9rem); line-height: 1.12; text-wrap: balance; }
.log-row a:hover .row-title { color: var(--sapphire); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 0.15em; }
.row-dek { color: var(--ink-soft); text-wrap: pretty; }
.row-foot { display: flex; flex-wrap: wrap; gap: 6px 14px; font-family: var(--mono); font-size: 0.78rem; color: var(--ink-soft); align-items: center; }
.row-cover { min-width: 0; }
.row-cover .cover-num { font-size: 2.2rem; }
.empty { color: var(--ink-soft); font-style: italic; }
.row-foot .log-no { display: none; }

/* ------------------------------------------------------------ posts */
.post-main { padding: 0 var(--gutter) 80px; margin-top: -96px; position: relative; z-index: 1; }
.post-head { max-width: var(--measure); margin: 0 auto 40px; display: grid; gap: 16px; }
.post-kicker { margin: 0; }
.post-head h1 {
  font-family: var(--display); font-weight: 400; margin: 0; text-wrap: balance;
  font-size: clamp(2.3rem, 6.4vw, 4rem); line-height: 1.02; letter-spacing: -0.005em;
}
.post-head .dek { font-style: italic; font-size: clamp(1.1rem, 2.2vw, 1.3rem); }
.draft-note {
  margin: 4px 0 0; padding: 10px 14px; border-left: 3px solid var(--brass); background: var(--paper-2);
  font-size: 0.92rem; color: var(--ink-soft);
}

.prose {
  display: grid; grid-template-columns: minmax(0, 1fr) min(var(--measure), 100%) minmax(0, 1fr);
  font-size: 1.125rem; line-height: 1.72;
}
.prose > * { grid-column: 2; min-width: 0; margin: 0 0 1.15em; }
.prose > .wide, .prose > .diagram { grid-column: 1 / -1; justify-self: center; width: min(var(--wide), 100%); margin-block: 1.4em 2em; }
.prose h2 {
  font-family: var(--display); font-weight: 400; font-size: clamp(1.6rem, 3.4vw, 2.05rem); line-height: 1.15;
  margin: 1.6em 0 0.55em; text-wrap: balance;
}
.prose h3 { font-size: 1.2rem; margin: 1.4em 0 0.4em; }
.prose p, .prose li { text-wrap: pretty; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose li + li { margin-top: 0.35em; }
.prose strong { font-weight: 600; }
.prose code {
  font-family: var(--mono); font-size: 0.86em; background: var(--code-bg); padding: 0.08em 0.35em; border-radius: 3px;
  overflow-wrap: anywhere;
}
.prose pre { overflow-x: auto; background: var(--code-bg); padding: 14px 16px; border-radius: 4px; font-size: 0.9rem; }
.prose pre code { background: none; padding: 0; }
.prose > p:first-child::first-letter {
  font-family: var(--display); float: left; font-size: 4.1em; line-height: 0.82; padding: 0.06em 0.1em 0 0;
  color: var(--moon, var(--sapphire));
}
.table-scroll { overflow-x: auto; }
.prose table { border-collapse: collapse; width: 100%; font-size: 0.95rem; font-variant-numeric: tabular-nums; }
.prose th, .prose td { text-align: left; padding: 8px 12px; border-bottom: 1px solid var(--rule); white-space: nowrap; }
.prose th { font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-soft); font-weight: 500; }

/* test captures */
.capture-frame { position: relative; background: #050a16; border-radius: 4px; overflow: hidden; }
.capture-frame img { width: 100%; }
.capture-tag {
  position: absolute; z-index: 2; top: 10px; left: 10px; max-width: calc(100% - 20px);
  background: var(--tag-bg); color: var(--tag-fg); backdrop-filter: blur(4px);
  font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 4px 8px; border-radius: 3px; line-height: 1.3;
}
figure { margin: 0; }
figcaption {
  margin-top: 10px; font-size: 0.92rem; line-height: 1.5; color: var(--ink-soft);
  max-width: var(--measure); margin-inline: auto; text-wrap: pretty;
}
.capture .capture-frame, .compare-pair { box-shadow: 0 16px 36px -22px rgba(5, 15, 40, 0.6); }

.compare-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; border-radius: 4px; }
.compare.is-slider .compare-pair { display: block; position: relative; overflow: hidden; --pos: 50%; touch-action: pan-y; }
.compare.is-slider .capture-frame { border-radius: 0; }
.compare.is-slider .capture-frame + .capture-frame {
  position: absolute; inset: 0; clip-path: inset(0 0 0 var(--pos));
}
.compare.is-slider .capture-frame + .capture-frame .capture-tag { left: auto; right: 10px; }
.compare-handle {
  position: absolute; z-index: 3; top: 0; bottom: 0; left: var(--pos); width: 2px; margin-left: -1px;
  background: var(--tag-fg); box-shadow: 0 0 8px rgba(0, 0, 0, 0.5); pointer-events: none;
}
.compare-handle::after {
  content: "‹ ›"; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: 38px; height: 38px; border-radius: 50%; display: grid; place-items: center;
  background: var(--tag-bg); color: var(--tag-fg); border: 2px solid var(--tag-fg);
  font-family: var(--mono); font-size: 0.9rem; letter-spacing: 0.1em;
}
.compare-range {
  position: absolute; inset: 0; z-index: 4; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: ew-resize;
}
.compare-range:focus-visible + .compare-handle::after { outline: 2px solid var(--sapphire); outline-offset: 3px; }

/* diagrams */
.diagram > .diagram-scroll {
  overflow-x: auto; background: var(--card); border: 1px solid var(--rule); border-radius: 6px; padding: 16px 12px;
}
.diagram-hint { display: none; font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-soft); margin-top: 6px; }
.diagram.scrolls .diagram-hint { display: block; }
.diagram svg { display: block; width: 100%; min-width: 560px; height: auto; }
.diagram text { font-family: var(--body); }
.d-label { font-family: var(--mono) !important; font-size: 12px; letter-spacing: 0.1em; font-weight: 500; fill: var(--ink-soft); }
.d-small { font-size: 14px; fill: var(--ink); }
.d-axis { font-family: var(--mono) !important; font-size: 11.5px; fill: var(--ink-soft); }
.d-mono { font-family: var(--mono) !important; font-size: 17px; font-weight: 500; fill: var(--ink); }
.d-mono-big { font-family: var(--mono) !important; font-size: 30px; font-weight: 500; fill: var(--ink); }
.d-faint { fill: var(--ink-soft); }
.d-accent { fill: var(--sapphire); }
.d-danger { fill: var(--danger); }
.d-grid { stroke: var(--rule); stroke-width: 1; }
.d-threshold { stroke-width: 1.5; stroke-dasharray: 6 5; }
.d-threshold-in { stroke: var(--danger); }
.d-threshold-out { stroke: var(--sapphire); }
.d-band-danger { fill: var(--danger-wash); }
.d-line { fill: none; stroke: var(--ink); stroke-width: 2.5; stroke-linejoin: round; stroke-linecap: round; }
.d-line-ok { stroke: var(--sapphire); }
.d-line-bad { stroke: var(--danger); }
.d-dots circle { fill: var(--card); stroke: var(--ink); stroke-width: 2; }
.d-dots .d-dot-danger { fill: var(--danger); stroke: var(--danger); }
.d-byte { fill: var(--paper); stroke: var(--rule-strong); stroke-width: 1.5; }
.d-byte-a { fill: var(--sapphire-wash); stroke: var(--sapphire); }
.d-byte-b { fill: var(--danger-wash); stroke: var(--danger); }
.d-byte-ok { fill: var(--sapphire-wash); stroke: var(--sapphire); stroke-width: 2.5; }
.d-byte-bad { fill: var(--danger-wash); stroke: var(--danger); stroke-width: 2.5; stroke-dasharray: 5 3; }
.d-bracket { fill: none; stroke: var(--ink-soft); stroke-width: 1.5; }
.d-arrow { fill: none; stroke: var(--danger); stroke-width: 1.8; }
.d-tick { fill: var(--ink-soft); opacity: 0.5; }
.d-tick-off { fill: var(--danger); opacity: 0.4; }
.d-tick-extra { fill: var(--danger); }
.d-card { fill: var(--paper); stroke: var(--rule-strong); stroke-width: 1.5; }
.d-card-bad { fill: var(--danger-wash); stroke: var(--danger); }

.pager {
  max-width: var(--wide); margin: 56px auto 0; display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
  border-top: 1px solid var(--rule-strong); padding-top: 24px;
}
.pager a { display: grid; gap: 6px; text-decoration: none; color: inherit; padding: 6px 0; min-width: 0; }
.pager-newer { text-align: right; }
.pager-title { font-family: var(--display); font-size: 1.35rem; line-height: 1.2; text-wrap: balance; }
.pager a:hover .pager-title { color: var(--sapphire); }
.button {
  display: inline-block; font-family: var(--mono); font-size: 0.8rem; letter-spacing: 0.1em; text-transform: uppercase;
  background: var(--sapphire); color: var(--paper); padding: 10px 16px; border-radius: 4px; text-decoration: none;
}

.site-footer { background: var(--paper-2); border-top: 1px solid var(--rule); padding: 32px var(--gutter); }
.footer-inner { max-width: 72rem; margin-inline: auto; display: grid; gap: 6px; font-size: 0.95rem; color: var(--ink-soft); }
.footer-inner p { margin: 0; max-width: 46rem; }
.footer-inner .fine { font-size: 0.85rem; }

/* ------------------------------------------------------------ narrow screens */
@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; text-align: left; }
  .hero-logo img { max-width: 560px; }
  .feature-card { grid-template-columns: 1fr; }
  .log-row a { grid-template-columns: 3.2rem minmax(0, 1fr); }
  .row-cover { display: none; }
  .row-no { font-size: 2.6rem; }
}
@media (max-width: 560px) {
  body { font-size: 1rem; }
  .sky-home { padding-top: 64px; padding-bottom: 200px; }
  .sky-home .cloudsea { height: 160px; }
  .cloud { height: 96px !important; bottom: -24px !important; }
  .c6, .c7 { height: 80px !important; bottom: -40px !important; }
  .feature { margin-top: -96px; }
  .brand img { height: 40px; }
  .topbar nav { gap: 14px; }
  .topbar nav a { font-size: 0.72rem; letter-spacing: 0.08em; }
  .prose { font-size: 1.06rem; }
  .compare:not(.is-slider) .compare-pair { grid-template-columns: 1fr; }
  .pager { grid-template-columns: 1fr; }
  .pager-newer { text-align: left; }
  .sky-band { height: 170px; }
  .post-main { margin-top: -70px; }
}