/* Learning journey page. Tokens follow the geodatamind.com home page (styles.css). */
:root {
  --void: #0a0a0a;
  --void-raise: #0d0e11;
  --void-card: #131417;
  --snow: #fffdf6;
  --ash: #a1a1a1;
  --dim: #6e6e6e;
  --edge: rgba(255, 253, 246, 0.10);
  --edge-strong: rgba(255, 253, 246, 0.22);
  --accent: #4da6ff;
  --blue: #2f7bf6;
  --gold: #ffd98a;
  --mint: #7fd7b8;
  --lavender: #c9d1fc;
  --warn: #ff8a6b;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --rail-w: 250px;
  --read: 720px;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }
body {
  margin: 0; background: var(--void); color: var(--snow);
  font: 400 17px/1.65 Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased; overflow-x: hidden;
}
a { color: var(--accent); text-underline-offset: 3px; }
h1, h2, h3, .stop-title { font-family: Sora, Inter, sans-serif; letter-spacing: -0.01em; line-height: 1.2; }
.skip { position: absolute; left: -9999px; top: 8px; background: var(--snow); color: var(--void); padding: 8px 12px; border-radius: 6px; z-index: 50; }
.skip:focus { left: 8px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* top bar */
.topbar {
  position: sticky; top: 0; z-index: 30; display: flex; align-items: center; gap: 16px;
  padding: 12px 24px; background: rgba(10, 10, 10, 0.86); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--edge);
}
.brand { display: flex; align-items: center; gap: 8px; color: var(--snow); text-decoration: none; font: 600 15px Sora, sans-serif; }
.topbar-progress { flex: 1; height: 3px; background: var(--edge); border-radius: 2px; overflow: hidden; }
.topbar-progress span { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--blue), var(--mint)); transition: width .6s var(--ease); }
.chip { background: transparent; color: var(--snow); border: 1px solid var(--edge-strong); border-radius: 999px; padding: 5px 12px; font: 500 13px Inter, sans-serif; cursor: pointer; }
#open-rail { display: none; }

/* hero */
.hero { max-width: calc(var(--rail-w) + var(--read) + 64px); margin: 0 auto; padding: 72px 24px 40px; }
.kicker { color: var(--accent); font: 600 13px Inter, sans-serif; letter-spacing: .08em; text-transform: uppercase; margin: 0 0 12px; }
.hero h1 { font-size: clamp(36px, 6vw, 60px); font-weight: 700; margin: 0 0 18px; }
.lede { color: var(--ash); font-size: clamp(17px, 2vw, 20px); max-width: 760px; margin: 0 0 14px; }
.meta { color: var(--dim); font-size: 14px; margin: 0 0 26px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px; border-radius: 999px; padding: 11px 20px;
  font: 600 15px Inter, sans-serif; cursor: pointer; text-decoration: none; border: 1px solid var(--edge-strong);
  background: var(--void-card); color: var(--snow); transition: filter .2s, border-color .2s, background .2s;
}
.btn:hover { border-color: rgba(244, 242, 236, 0.5); }
.btn.primary { background: var(--blue); border-color: var(--blue); color: #fff; }
.btn.primary:hover { filter: brightness(1.12); }
.btn.ghost { background: transparent; }
.btn.small { padding: 7px 14px; font-size: 14px; }
.btn:disabled { opacity: .4; cursor: default; }
.dot { background: var(--gold); color: var(--void); border-radius: 999px; font-size: 12px; padding: 0 7px; }
.link-btn { background: none; border: 0; color: var(--ash); font: 500 14px Inter, sans-serif; cursor: pointer; padding: 6px 0; text-decoration: underline; text-underline-offset: 3px; }
.link-btn:hover { color: var(--snow); }
.progress-card { display: flex; align-items: center; gap: 14px; margin-top: 26px; padding: 12px 18px; border: 1px solid var(--edge); border-radius: 14px; background: var(--void-raise); width: fit-content; max-width: 100%; }
.progress-card[hidden], .news[hidden] { display: none; }
.progress-card strong { display: block; font-weight: 600; }
.progress-card span { color: var(--ash); font-size: 14px; }
.ring { position: relative; width: 48px; height: 48px; flex: none; }
.ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.ring circle { fill: none; stroke-width: 3.2; }
.ring-bg { stroke: var(--edge); }
.ring-fg { stroke: var(--mint); stroke-linecap: round; stroke-dasharray: 0 100; transition: stroke-dasharray .6s var(--ease); }
.ring span { position: absolute; inset: 0; display: grid; place-items: center; font: 600 12px Inter, sans-serif; color: var(--snow) !important; }
.news { margin-top: 20px; padding: 18px 22px; border: 1px solid var(--edge); border-radius: 14px; background: var(--void-raise); max-width: 760px; }
.news h3 { margin: 0 0 8px; font-size: 16px; }
.news ul { margin: 0; padding-left: 18px; color: var(--ash); }
.news time { color: var(--gold); font-size: 14px; }

/* layout */
.layout { max-width: calc(var(--rail-w) + var(--read) + 64px); margin: 0 auto; padding: 0 24px; display: grid; grid-template-columns: var(--rail-w) minmax(0, 1fr); gap: 56px; }
.rail { position: sticky; top: 76px; align-self: start; max-height: calc(100vh - 96px); overflow-y: auto; padding: 8px 0 24px; }
.rail-head { display: flex; justify-content: space-between; align-items: center; color: var(--dim); font: 600 12px Inter; letter-spacing: .08em; text-transform: uppercase; margin-bottom: 10px; }
.only-mobile { display: none; }
.rail ol { list-style: none; margin: 0 0 16px; padding: 0; position: relative; }
.rail ol::before { content: ""; position: absolute; left: 7px; top: 8px; bottom: 8px; width: 2px; background: linear-gradient(var(--lavender), var(--accent) 35%, #c79a55 55%, #1c4f8f); opacity: .35; border-radius: 2px; }
.rail-group { color: var(--dim); font: 600 11px Inter; letter-spacing: .08em; text-transform: uppercase; padding: 14px 0 4px 28px; }
.rail a { display: flex; gap: 12px; align-items: flex-start; padding: 6px 0; color: var(--ash); text-decoration: none; position: relative; }
.rail a:hover { color: var(--snow); }
.tick { flex: none; width: 16px; height: 16px; margin-top: 3px; border-radius: 50%; border: 2px solid var(--edge-strong); background: var(--void); position: relative; z-index: 1; transition: background .3s, border-color .3s; }
.rail a.is-done .tick { background: var(--mint); border-color: var(--mint); }
.rail a.is-done .tick::after { content: ""; position: absolute; left: 4px; top: 1px; width: 4px; height: 8px; border: solid var(--void); border-width: 0 2px 2px 0; transform: rotate(45deg); }
.rail a.is-here { color: var(--snow); }
.rail a.is-here .tick { border-color: var(--accent); box-shadow: 0 0 0 4px rgba(77, 166, 255, .18); }
.rl { display: flex; flex-direction: column; line-height: 1.3; font-size: 15px; }
.rl-depth { color: var(--dim); font-size: 12px; }
.rail-badge { align-self: flex-start; margin-top: 3px; font: 600 10px Inter; text-transform: uppercase; letter-spacing: .06em; color: var(--void); background: var(--gold); border-radius: 4px; padding: 1px 5px; }

/* stops */
main { min-width: 0; max-width: var(--read); }
main:focus { outline: none; }
.loading { color: var(--ash); padding: 40px 0; }
.stop { padding: 28px 0 56px; border-top: 1px solid var(--edge); }
.stop-meta { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin: 0 0 8px; font-size: 13px; color: var(--dim); }
.stop-depth { color: var(--accent); }
.stop-depth::before { content: "↓ "; }
.badge { font: 600 11px Inter; text-transform: uppercase; letter-spacing: .06em; color: var(--void); background: var(--gold); border-radius: 4px; padding: 2px 7px; }
.stop-title { font-size: clamp(26px, 3.4vw, 34px); font-weight: 600; margin: 0 0 20px; }
.stop.is-done .stop-title::after { content: " ✓"; color: var(--mint); font-size: .7em; }
.key { border-left: 3px solid var(--accent); background: linear-gradient(90deg, rgba(77, 166, 255, .08), transparent); padding: 14px 18px; border-radius: 0 12px 12px 0; margin: 0 0 26px; }
.key-label { color: var(--accent); font: 600 12px Inter; letter-spacing: .08em; text-transform: uppercase; }
.key-text { margin: 4px 0 0; font-size: 18px; line-height: 1.55; }

.prose { color: #e9e7e0; }
.prose p, .prose li { color: #dcdad3; }
.prose strong { color: var(--snow); }
.prose h3 { font-size: 21px; margin: 36px 0 10px; }
.prose ul, .prose ol { padding-left: 22px; }
.prose li { margin: 6px 0; }
.prose code { font: 14px ui-monospace, "Cascadia Mono", Consolas, monospace; background: var(--void-card); border: 1px solid var(--edge); border-radius: 5px; padding: 1px 5px; color: var(--lavender); }
.prose img { display: block; width: 100%; height: auto; border-radius: 12px; border: 1px solid var(--edge); background: #fff; cursor: zoom-in; margin: 26px 0 0; }
.prose img + br, .prose p:has(> img) { margin-bottom: 0; }
.prose p:has(> img) + p > em:only-child { display: block; color: var(--ash); font-size: 14px; line-height: 1.5; margin-top: 8px; }
.table-wrap { overflow-x: auto; margin: 20px 0; border: 1px solid var(--edge); border-radius: 12px; }
.prose table { border-collapse: collapse; width: 100%; font-size: 15px; min-width: 460px; }
.prose th, .prose td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--edge); vertical-align: top; }
.prose th { background: var(--void-card); font-weight: 600; color: var(--snow); }
.prose tr:last-child td { border-bottom: 0; }

/* quiz */
.quiz { margin: 34px 0 0; padding: 20px 22px; border: 1px solid var(--edge); border-radius: 16px; background: var(--void-raise); }
.quiz-label { margin: 0; color: var(--gold); font: 600 12px Inter; letter-spacing: .08em; text-transform: uppercase; }
.quiz-q { margin: 6px 0 14px; font-weight: 600; font-size: 17px; }
.quiz-opts { display: grid; gap: 8px; }
.opt { text-align: left; background: var(--void-card); color: var(--snow); border: 1px solid var(--edge-strong); border-radius: 10px; padding: 11px 14px; font: 15px/1.45 Inter, sans-serif; cursor: pointer; transition: border-color .2s, background .2s; }
.opt:hover { border-color: rgba(244, 242, 236, .5); }
.opt.right { border-color: var(--mint); background: rgba(127, 215, 184, .12); }
.opt.wrong { border-color: var(--warn); background: rgba(255, 138, 107, .1); }
.quiz-why { margin: 14px 0 0; color: var(--ash); font-size: 15px; }
.quiz-why strong { color: var(--snow); }
.stop-foot { display: flex; flex-wrap: wrap; gap: 12px 16px; align-items: center; margin-top: 26px; }
.done-btn[aria-pressed="true"] { background: rgba(127, 215, 184, .14); border-color: var(--mint); color: var(--mint); }

/* widgets */
.w { margin: 30px 0; padding: 20px 22px 22px; border: 1px solid var(--edge-strong); border-radius: 18px; background: linear-gradient(180deg, #111318, var(--void-raise)); }
.w-title { margin: 0 0 4px; font: 600 18px Sora, sans-serif; color: var(--snow) !important; }
.w-tag { font: 600 11px Inter; letter-spacing: .08em; text-transform: uppercase; color: var(--void); background: var(--accent); border-radius: 4px; padding: 2px 7px; vertical-align: 2px; }
.w-hint { margin: 0 0 16px; color: var(--ash) !important; font-size: 14.5px; }
.w-controls { display: flex; flex-wrap: wrap; gap: 14px 22px; margin-bottom: 16px; align-items: flex-end; }
.w-controls.row { align-items: center; margin: 14px 0 0; }
.ctl { display: flex; flex-direction: column; gap: 6px; }
.ctl-l { color: var(--dim); font-size: 12px; letter-spacing: .04em; text-transform: uppercase; }
.seg { display: inline-flex; flex-wrap: wrap; border: 1px solid var(--edge-strong); border-radius: 10px; overflow: hidden; }
.seg button { background: transparent; color: var(--ash); border: 0; border-right: 1px solid var(--edge); padding: 7px 12px; font: 500 14px Inter, sans-serif; cursor: pointer; }
.seg button:last-child { border-right: 0; }
.seg button[aria-checked="true"] { background: var(--blue); color: #fff; }
select { background: var(--void-card); color: var(--snow); border: 1px solid var(--edge-strong); border-radius: 10px; padding: 8px 10px; font: 14px Inter, sans-serif; max-width: 100%; }
.sl { display: flex; flex-direction: column; gap: 4px; min-width: 220px; flex: 1; }
.sl[hidden] { display: none; }
.w-controls > .sl { flex-basis: 100%; }
.sl-top { display: flex; justify-content: space-between; gap: 10px; font-size: 13.5px; color: var(--ash); }
.sl output { color: var(--snow); font-weight: 600; font-variant-numeric: tabular-nums; }
input[type="range"] { width: 100%; accent-color: var(--accent); }
.sl-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px 22px; margin-bottom: 16px; }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 10px; margin: 6px 0 14px; }
.stat { background: var(--void-card); border: 1px solid var(--edge); border-radius: 12px; padding: 10px 12px; }
.stat span { display: block; color: var(--dim); font-size: 12px; text-transform: uppercase; letter-spacing: .04em; }
.stat strong { display: block; font-size: 16px; font-weight: 600; margin-top: 2px; font-variant-numeric: tabular-nums; line-height: 1.35; }
.stat[data-tone="warn"] strong { color: var(--warn); }
.stat[data-tone="ok"] strong { color: var(--mint); }
.stat[data-tone="muted"] strong { color: var(--dim); font-weight: 500; font-size: 14px; }
.w-note { margin: 12px 0 0; color: var(--ash) !important; font-size: 15px; }
.w-note strong { color: var(--snow); }
.w-fine { margin: 10px 0 0; color: var(--dim) !important; font-size: 13px; line-height: 1.5; }
.w-svg { width: 100%; height: auto; display: block; overflow: visible; }
.w-svg .grid { stroke: rgba(255, 253, 246, .07); }
.w-svg .tick { fill: var(--dim); font: 12px Inter, sans-serif; }
.w-svg .lbl { fill: var(--ash); font: 12.5px Inter, sans-serif; }
.w-svg .line-a { fill: none; stroke: var(--accent); stroke-width: 2.5; stroke-linejoin: round; }
.w-svg .line-b { fill: none; stroke: var(--gold); stroke-width: 2.2; stroke-dasharray: 6 4; }
.w-svg .pt-a { fill: var(--accent); stroke: var(--void); stroke-width: 2; }
.w-svg .pt-b { fill: var(--gold); stroke: var(--void); stroke-width: 1.5; }
.w-svg .pt-b-c { fill: var(--gold); stroke: var(--void); stroke-width: 2; }
.w-svg .ref { stroke: var(--warn); stroke-width: 1.5; stroke-dasharray: 4 4; }
.w-svg .cursor { stroke: var(--edge-strong); stroke-width: 1; }
.w-svg .zone-warn { fill: rgba(255, 138, 107, .07); }
.w-svg .zone-mid { fill: rgba(255, 217, 138, .05); }
.w-svg .zone-ok { fill: rgba(127, 215, 184, .09); }
.w-svg .ground { fill: #2a2117; }
.w-svg .surf { stroke: #c79a55; stroke-width: 2; }
.w-svg .sea { fill: rgba(47, 123, 246, .45); }
.w-svg .sat { fill: rgba(47, 123, 246, .28); }
.w-svg .wt { fill: none; stroke: var(--accent); stroke-width: 2.5; }
.w-svg .flood { fill: var(--warn); }

.gainbars { display: grid; gap: 12px; }
.gb { display: grid; grid-template-columns: 96px 1fr 84px; gap: 12px; align-items: center; font-size: 15px; }
.gb-track { position: relative; height: 16px; background: var(--void-card); border-radius: 8px; overflow: hidden; }
.gb-fill { position: absolute; left: 0; top: 0; bottom: 0; border-radius: 8px; transition: width .5s var(--ease); }
.gb-fill.ok { background: var(--mint); } .gb-fill.warn { background: var(--warn); }
.gb-one { position: absolute; top: -2px; bottom: -2px; width: 2px; background: var(--snow); opacity: .6; z-index: 1; }
.gb-v { text-align: right; font-weight: 600; font-variant-numeric: tabular-nums; }

.casc { display: grid; gap: 7px; }
.cb { display: grid; grid-template-columns: minmax(120px, 230px) 1fr 64px; gap: 12px; align-items: center; font-size: 14.5px; color: var(--dim); }
.cb.on { color: var(--snow); }
.cb-track { height: 14px; background: var(--void-card); border-radius: 7px; overflow: hidden; }
.cb-fill { display: block; height: 100%; background: var(--accent); border-radius: 7px; transition: width .6s var(--ease); }
.cb.jump.on .cb-fill { background: var(--warn); }
.cb-v { text-align: right; font-weight: 600; font-variant-numeric: tabular-nums; }

.pairs { display: grid; gap: 14px; }
.pair { display: grid; gap: 4px; }
.pair-l { font-size: 14.5px; }
.pb { position: relative; height: 22px; background: var(--void-card); border-radius: 6px; overflow: hidden; }
.pb-fill { position: absolute; inset: 0 auto 0 0; border-radius: 6px; }
.pb-fill.a, .sw.a { background: rgba(77, 166, 255, .55); }
.pb-fill.b, .sw.b { background: rgba(255, 217, 138, .65); }
.pb em { position: relative; font-style: normal; font-size: 12.5px; padding-left: 8px; line-height: 22px; color: var(--snow); }
.sw { display: inline-block; width: 10px; height: 10px; border-radius: 2px; vertical-align: 0; }

.models { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: 20px; align-items: center; }
.big { font: 700 54px Sora, sans-serif; color: var(--accent); line-height: 1; margin-bottom: 10px; font-variant-numeric: tabular-nums; }
.mtxt { color: var(--ash); font-size: 15px; }
.mtxt strong { color: var(--snow); }
.dots { display: grid; grid-template-columns: repeat(20, 1fr); gap: 3px; }
.dots i { aspect-ratio: 1; border-radius: 50%; background: var(--void-card); border: 1px solid var(--edge); transition: background .3s; }
.dots i.on { background: var(--accent); border-color: var(--accent); }

.stack { display: flex; height: 30px; border-radius: 8px; overflow: hidden; background: var(--void-card); }
.st { display: flex; align-items: center; justify-content: center; transition: width .5s var(--ease); min-width: 0; }
.st em { font-style: normal; font-size: 12px; font-weight: 600; color: var(--void); }
.legend { display: flex; flex-wrap: wrap; gap: 6px 16px; margin-top: 12px; font-size: 13.5px; color: var(--ash); }
.lg { display: inline-flex; gap: 6px; align-items: center; }
.lg i { width: 10px; height: 10px; border-radius: 2px; }
.c0 { background: #4da6ff; } .c1 { background: #ffd98a; } .c2 { background: #ff8a6b; } .c3 { background: #7fd7b8; }
.c4 { background: #f08fd0; } .c5 { background: #c9d1fc; } .c6 { background: #5b5e66; }
.c6 em { color: var(--snow) !important; }

/* the full document, docked on the right below the top bar */
:root { --doc-w: clamp(440px, 42vw, 780px); --top-h: 53px; }
.docpanel {
  position: fixed; top: var(--top-h); right: 0; bottom: 0; width: var(--doc-w); z-index: 25;
  display: flex; flex-direction: column; background: var(--void-raise);
  border-left: 1px solid var(--edge-strong); box-shadow: -24px 0 60px rgba(0, 0, 0, .45);
}
.docpanel[hidden] { display: none; }
.doc-head { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 10px; padding: 10px 14px; border-bottom: 1px solid var(--edge); }
.doc-title { flex: 1 1 160px; min-width: 0; display: flex; flex-direction: column; line-height: 1.3; }
.doc-title strong { font: 600 14px Sora, sans-serif; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.doc-title span { color: var(--dim); font-size: 12px; }
.doc-follow { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--ash); cursor: pointer; }
.doc-follow input { accent-color: var(--accent); margin: 0; }
.docpanel .chip { text-decoration: none; }
#doc-frame { flex: 1; width: 100%; border: 0; background: #3b3d42; }
.doc-toggle[aria-expanded="true"] { border-color: var(--accent); color: var(--accent); }
.doc-toggle[hidden], .doc-link[hidden] { display: none; }
@media (min-width: 1100px) {
  body.doc-open .hero, body.doc-open .layout, body.doc-open .site-foot { max-width: none; margin-left: 0; margin-right: var(--doc-w); }
  body.doc-open .layout { justify-content: center; grid-template-columns: var(--rail-w) minmax(0, var(--read)); }
  body.doc-open .hero, body.doc-open .site-foot { padding-inline: max(24px, calc((100vw - var(--doc-w) - var(--rail-w) - var(--read) - 56px) / 2)); }
}
/* not enough room for the stop list as well: hide it while the document is open */
@media (min-width: 1100px) and (max-width: 1699px) {
  body.doc-open .layout { grid-template-columns: minmax(0, var(--read)); }
  body.doc-open .rail { display: none; }
  body.doc-open .hero, body.doc-open .site-foot { padding-inline: max(24px, calc((100vw - var(--doc-w) - var(--read)) / 2)); }
}

/* lightbox */
.lightbox { position: fixed; inset: 0; z-index: 60; background: rgba(5, 5, 6, .94); display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 56px 16px 24px; }
.lightbox[hidden] { display: none; }
.lightbox img { max-width: min(1400px, 100%); max-height: 80vh; background: #fff; border-radius: 8px; }
.lightbox p { color: var(--ash); max-width: 900px; font-size: 14px; text-align: center; }
.lb-close { position: absolute; top: 14px; right: 16px; }

.site-foot { max-width: calc(var(--rail-w) + var(--read) + 64px); margin: 40px auto 0; padding: 28px 24px 56px; border-top: 1px solid var(--edge); color: var(--dim); font-size: 14px; }
.site-foot p { max-width: 760px; }

/* phones and small tablets */
@media (max-width: 960px) {
  #open-rail { display: inline-block; }
  .layout { grid-template-columns: minmax(0, 1fr); gap: 0; padding: 0 16px; }
  .hero { padding: 44px 16px 28px; }
  .topbar { padding: 10px 16px; }
  .rail { position: fixed; inset: 0 0 0 auto; width: min(320px, 86vw); max-height: none; top: 0; z-index: 40; background: var(--void-raise); border-left: 1px solid var(--edge-strong); padding: 18px 20px; transform: translateX(105%); transition: transform .35s var(--ease); }
  .rail.open { transform: none; box-shadow: -20px 0 60px rgba(0, 0, 0, .6); }
  .only-mobile { display: inline-block; }
  .site-foot { padding: 24px 16px 48px; }
}
@media (max-width: 560px) {
  body { font-size: 16px; }
  .w { padding: 16px 14px 18px; margin: 24px -4px; }
  .quiz { padding: 16px; }
  .gb { grid-template-columns: 80px 1fr 70px; }
  .cb { grid-template-columns: 1fr 52px; }
  .cb-l { grid-column: 1 / -1; }
  .models { grid-template-columns: 1fr; }
  .big { font-size: 44px; }
  .sl { min-width: 0; }
  .topbar-progress { display: none; }
  .brand span { font-size: 14px; }
  .topbar { justify-content: space-between; }
  /* charts are drawn 640 wide and scale down by about half on a phone: keep their text readable */
  .w-svg .tick { font-size: 19px; }
  .w-svg .lbl { font-size: 20px; }
}