:root {
  --bg: #eceff5;
  --ink: #1c1c1e;
  --ink-2: #48484a;
  --ink-3: #8e8e93;
  --accent: #c2410c;
  --accent-2: #ea7a3b;
  --accent-ink: #fff;
  --glass: rgba(255, 255, 255, 0.52);
  --glass-strong: rgba(255, 255, 255, 0.74);
  --glass-soft: rgba(255, 255, 255, 0.34);
  --glass-border: rgba(255, 255, 255, 0.75);
  --glass-edge: rgba(0, 0, 0, 0.06);
  --shadow: 0 1px 1px rgba(0, 0, 0, 0.04), 0 10px 40px rgba(40, 50, 90, 0.12);
  --cell: rgba(255, 255, 255, 0.42);
  --cell-hover: rgba(255, 255, 255, 0.7);
  --cell-sel: rgba(255, 237, 222, 0.9);
  --blob1: rgba(255, 171, 125, 0.55);
  --blob2: rgba(140, 175, 255, 0.55);
  --blob3: rgba(120, 220, 190, 0.42);
  --blob4: rgba(214, 160, 255, 0.38);
  --r-xl: 26px;
  --r-lg: 18px;
  --r-md: 12px;
  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", Inter, "Helvetica Neue", system-ui, sans-serif;
  --mono: "SF Mono", ui-monospace, "JetBrains Mono", Menlo, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0b0c10; --ink: #f2f2f7; --ink-2: #c7c7cc; --ink-3: #8e8e93; --accent: #ff9f5a; --accent-2: #ffb27a; --accent-ink: #1b0d03;
    --glass: rgba(36, 38, 46, 0.5); --glass-strong: rgba(40, 42, 52, 0.78); --glass-soft: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1); --glass-edge: rgba(255, 255, 255, 0.06);
    --shadow: 0 1px 1px rgba(0, 0, 0, 0.3), 0 14px 50px rgba(0, 0, 0, 0.45);
    --cell: rgba(255, 255, 255, 0.04); --cell-hover: rgba(255, 255, 255, 0.09); --cell-sel: rgba(255, 159, 90, 0.18);
    --blob1: rgba(200, 90, 40, 0.35); --blob2: rgba(60, 90, 200, 0.38); --blob3: rgba(30, 140, 120, 0.3); --blob4: rgba(130, 70, 200, 0.28);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0b0c10; --ink: #f2f2f7; --ink-2: #c7c7cc; --ink-3: #8e8e93; --accent: #ff9f5a; --accent-2: #ffb27a; --accent-ink: #1b0d03;
  --glass: rgba(36, 38, 46, 0.5); --glass-strong: rgba(40, 42, 52, 0.78); --glass-soft: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1); --glass-edge: rgba(255, 255, 255, 0.06);
  --shadow: 0 1px 1px rgba(0, 0, 0, 0.3), 0 14px 50px rgba(0, 0, 0, 0.45);
  --cell: rgba(255, 255, 255, 0.04); --cell-hover: rgba(255, 255, 255, 0.09); --cell-sel: rgba(255, 159, 90, 0.18);
  --blob1: rgba(200, 90, 40, 0.35); --blob2: rgba(60, 90, 200, 0.38); --blob3: rgba(30, 140, 120, 0.3); --blob4: rgba(130, 70, 200, 0.28);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  -webkit-tap-highlight-color: transparent;
  margin: 0; background: var(--bg); color: var(--ink);
  font: 15px/1.55 var(--sans); overflow-x: hidden; -webkit-font-smoothing: antialiased;
}
[hidden] { display: none !important; }
.backdrop {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(40% 35% at 12% 8%, var(--blob1), transparent 70%),
    radial-gradient(38% 40% at 88% 6%, var(--blob2), transparent 70%),
    radial-gradient(45% 40% at 78% 82%, var(--blob3), transparent 70%),
    radial-gradient(40% 40% at 6% 88%, var(--blob4), transparent 70%),
    var(--bg);
}
a { color: var(--accent); text-underline-offset: 2px; }
code { font-family: var(--mono); font-size: 0.86em; background: var(--glass-soft); border: 1px solid var(--glass-edge); padding: 0.05em 0.35em; border-radius: 6px; }
h1 { font: 700 clamp(28px, 4.6vw, 44px)/1.05 var(--sans); letter-spacing: -0.025em; margin: 0 0 10px; }
h2 { font: 650 20px/1.25 var(--sans); letter-spacing: -0.01em; margin: 0 0 4px; }
h3 { font: 600 17px/1.3 var(--sans); margin: 0; }
.muted { color: var(--ink-2); }
.eyebrow { font: 600 11px/1 var(--sans); letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent); margin: 0 0 6px; }

.glass {
  background: var(--glass);
  -webkit-backdrop-filter: blur(26px) saturate(180%);
  backdrop-filter: blur(26px) saturate(180%);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255, 255, 255, 0.3);
}
.panel { border-radius: var(--r-xl); padding: 16px; }
@media (min-width: 720px) { .panel { padding: 22px 24px; } }

/* ------------------------------------------------------------- top bar */
.topbar {
  position: sticky; top: 10px; z-index: 30; margin: 10px auto 0; width: calc(100% - 20px); max-width: 1500px;
  display: flex; align-items: center; gap: 8px; padding: 6px 7px 6px 12px; border-radius: 999px;
}
.brand { display: flex; align-items: center; gap: 8px; color: var(--ink); text-decoration: none; font-weight: 650; letter-spacing: -0.01em; white-space: nowrap; }
.brand span { display: none; }
.brand img { display: block; }
@media (min-width: 1100px) { .brand span { display: inline; } }
.navlinks { display: flex; align-items: center; gap: 4px; flex: 1; min-width: 0; }
.navlink {
  display: inline-flex; align-items: center; gap: 6px; border: 0; background: transparent; color: var(--ink-2);
  font: 500 13.5px var(--sans); padding: 6px 11px; border-radius: 999px; cursor: pointer; text-decoration: none; white-space: nowrap;
}
.navlink:hover { background: var(--glass-soft); color: var(--ink); }
.navlink.active, .menu-btn[aria-expanded="true"] { background: var(--glass-strong); color: var(--ink); box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1); font-weight: 600; }
.menu-btn svg { opacity: 0.6; }
.menu {
  position: fixed; z-index: 35; top: 62px; left: 50%; transform: translateX(-50%); width: min(980px, calc(100vw - 20px));
  max-height: calc(100vh - 80px); overflow-y: auto; border-radius: var(--r-xl); padding: 14px; background: var(--glass-strong);
}
.menu-search {
  width: 100%; font: 500 14px var(--sans); color: var(--ink); background: var(--glass-soft); border: 1px solid var(--glass-edge);
  border-radius: 12px; padding: 8px 12px; margin-bottom: 12px;
}
.menu-groups { columns: 230px; column-gap: 18px; }
.menu-group { break-inside: avoid; margin-bottom: 12px; }
.menu-group h4 { font: 600 11px var(--sans); letter-spacing: 0.07em; text-transform: uppercase; color: var(--ink-3); margin: 0 0 4px 8px; }
.menu-item {
  display: flex; width: 100%; justify-content: space-between; gap: 10px; align-items: baseline; border: 0; background: transparent;
  color: var(--ink); font: 500 14px var(--sans); padding: 5px 8px; border-radius: 9px; cursor: pointer; text-align: left;
}
.menu-item small { color: var(--ink-3); font: 12px var(--sans); }
.menu-item:hover, .menu-item.current { background: var(--glass-soft); }
.menu-item.current { box-shadow: inset 2px 0 0 var(--accent); }
.tabs { display: flex; gap: 2px; overflow-x: auto; scrollbar-width: none; flex: 1; min-width: 0; padding: 2px; background: var(--glass-soft); border-radius: 999px; border: 1px solid var(--glass-edge); }
.tabs::-webkit-scrollbar { display: none; }
.tab {
  border: 0; background: transparent; color: var(--ink-2); border-radius: 999px; padding: 6px 12px; white-space: nowrap;
  font: 500 13.5px var(--sans); cursor: pointer; transition: background 0.2s, color 0.2s;
}
.tab:hover { color: var(--ink); background: var(--glass-soft); }
.tab[aria-selected="true"] { background: var(--glass-strong); color: var(--ink); box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1); font-weight: 600; }
.learn-tab {
  display: inline-flex; align-items: center; gap: 6px; text-decoration: none; white-space: nowrap;
  padding: 7px 14px; border-radius: 999px; font: 600 13.5px var(--sans);
  color: var(--accent-ink); background: linear-gradient(180deg, var(--accent-2), var(--accent));
  box-shadow: 0 2px 10px rgba(194, 65, 12, 0.3);
}
.learn-tab.active { box-shadow: 0 0 0 2px var(--glass-strong), 0 0 0 4px var(--accent); }
.icon-btn {
  width: 32px; height: 32px; border-radius: 999px; border: 1px solid var(--glass-edge); background: var(--glass-soft);
  color: var(--ink); cursor: pointer; display: grid; place-items: center; font-size: 14px; flex: none; padding: 0;
}
.icon-btn:hover { background: var(--glass-strong); }

/* ------------------------------------------------------------- layout */
.page { width: calc(100% - 20px); max-width: 1500px; margin: 0 auto; }
@media (min-width: 720px) { .page { width: calc(100% - 40px); } }
.hero { padding: 30px 6px 16px; }
.lede { max-width: 82ch; color: var(--ink-2); margin: 0; font-size: 15.5px; }
.panel-head { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 20px; align-items: flex-end; }
.titles p { margin: 2px 0 0; max-width: 78ch; font-size: 14px; }
.controls { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.pill {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px; text-decoration: none;
  font: 500 13px var(--sans); color: var(--ink); padding: 6px 13px; border-radius: 999px; cursor: pointer;
  border: 1px solid var(--glass-edge); background: var(--glass-soft); transition: background 0.2s;
}
.pill:hover { background: var(--glass-strong); }
.pill:disabled { opacity: 0.4; cursor: default; }
.pill.toggle.on { background: var(--glass-strong); box-shadow: inset 0 0 0 1.5px var(--accent); }
.pill.primary { color: var(--accent-ink); background: linear-gradient(180deg, var(--accent-2), var(--accent)); border-color: transparent; }
.pill.primary:hover { filter: brightness(1.05); }
.pill.wide { flex: 1 1 100%; }
.seg { display: inline-flex; padding: 2px; border-radius: 999px; background: var(--glass-soft); border: 1px solid var(--glass-edge); }
.seg button { border: 0; background: transparent; color: var(--ink-2); font: 500 12.5px var(--sans); padding: 5px 11px; border-radius: 999px; cursor: pointer; }
.seg button.on { background: var(--glass-strong); color: var(--ink); box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12); }

.legend { list-style: none; padding: 0; margin: 14px 0 12px; display: flex; flex-wrap: wrap; gap: 6px 14px; font-size: 13px; }
.legend li { display: inline-flex; align-items: center; gap: 6px; color: var(--ink-2); }
.legend code { background: none; border: 0; padding: 0; color: var(--ink); font-size: 12.5px; }
.legend.mini { margin: 8px 0; font-size: 12px; gap: 4px 10px; }
.sw { width: 12px; height: 12px; border-radius: 4px; flex: none; box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.15); }

/* ------------------------------------------------------------- matrix */
.stage { position: relative; }
.grid-gl { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; z-index: 2; }
.matrix-scroll { overflow-x: auto; overscroll-behavior-x: contain; border-radius: var(--r-lg); }
.matrix { display: grid; gap: 6px; padding: 4px; margin: 0 auto; }
.axis-title { font: 600 10.5px var(--sans); letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-3); display: flex; align-items: center; justify-content: center; text-align: center; }
.axis-title.rows { writing-mode: vertical-rl; transform: rotate(180deg); }
.hdr { font-size: 11.5px; line-height: 1.25; color: var(--ink-2); display: flex; flex-direction: column; justify-content: flex-end; align-items: center; text-align: center; padding: 2px 2px 4px; }
.hdr b { font: 600 12.5px var(--sans); color: var(--ink); }
.hdr span { color: var(--ink-3); font-size: 11px; }
.hdr.row {
  align-items: flex-end; justify-content: center; text-align: right; padding: 0 8px 0 4px; white-space: nowrap;
  position: sticky; left: 0; z-index: 3; background: var(--glass-strong); border-radius: 10px;
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
}
.axis-title.rows { position: sticky; left: 0; z-index: 3; }
.cell {
  position: relative; aspect-ratio: 1; min-width: 92px; border-radius: var(--r-md); cursor: grab; user-select: none;
  background: var(--cell); border: 1px solid var(--glass-edge); transition: background 0.18s, box-shadow 0.18s;
}
.cell:hover { background: var(--cell-hover); box-shadow: 0 4px 18px rgba(0, 0, 0, 0.08); }
.cell.sel { background: var(--cell-sel); box-shadow: inset 0 0 0 2px var(--accent); }
.cell.empty { background: transparent; border: 1px dashed var(--glass-edge); cursor: default; }
.cell .lab { position: absolute; left: 8px; top: 5px; font: 600 11px var(--sans); color: var(--ink-2); letter-spacing: 0.01em; pointer-events: none; white-space: nowrap; }
.cell .view { position: absolute; inset: 22px 6px 6px 6px; pointer-events: none; }
.matrix.dragging .cell { cursor: grabbing; }
.note { color: var(--ink-3); font-size: 12.5px; max-width: 120ch; margin: 12px 4px 0; }

.two-col { display: grid; gap: 16px; margin-top: 16px; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 1000px) { .two-col { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); } }
.prose p, .prose li { color: var(--ink-2); }
.prose h2 { margin-bottom: 10px; }
.habits { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 8px; padding: 0; list-style: none; margin: 14px 0 0; }
.habits li { background: var(--glass-soft); border: 1px solid var(--glass-edge); border-radius: var(--r-md); padding: 10px 12px; font-size: 13.5px; }
.habits li strong { color: var(--ink); }
.refs { padding-left: 1.3em; display: grid; gap: 10px; margin: 0; font-size: 13.5px; }
.refs li, .prose, .metrics dd { min-width: 0; overflow-wrap: anywhere; }
.refs .why { display: block; color: var(--ink-3); font-size: 12.5px; margin-top: 1px; }
.refs .tag { font: 600 9.5px var(--sans); text-transform: uppercase; letter-spacing: 0.06em; color: var(--accent); margin-left: 6px; }

/* ------------------------------------------------------------- inspector sheet */
.sheet {
  position: fixed; z-index: 40; right: 14px; top: 70px; bottom: 14px; width: min(420px, calc(100vw - 28px));
  border-radius: var(--r-xl); padding: 16px; overflow-y: auto; background: var(--glass-strong);
  transform: translateX(calc(100% + 30px)); transition: transform 0.35s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.sheet.open { transform: none; }
@media (max-width: 700px) {
  .sheet { left: 8px; right: 8px; width: auto; top: auto; bottom: 8px; max-height: 86vh; transform: translateY(calc(100% + 20px)); }
}
.sheet-head { display: flex; justify-content: space-between; gap: 10px; align-items: flex-start; }
.sheet-view { position: relative; height: 300px; margin: 10px 0 6px; border-radius: var(--r-lg); background: radial-gradient(circle at 50% 38%, var(--glass-strong), var(--glass-soft)); border: 1px solid var(--glass-edge); cursor: grab; touch-action: none; }
.solo-gl { position: absolute; inset: 0; width: 100%; height: 100%; display: block; border-radius: inherit; }
.sheet-desc { font-size: 13.5px; color: var(--ink-2); margin: 8px 0; }
.facebar { display: flex; height: 10px; border-radius: 99px; overflow: hidden; box-shadow: inset 0 0 0 1px var(--glass-edge); }
.facebar span { display: block; height: 100%; }
.metrics { display: grid; grid-template-columns: auto 1fr; gap: 4px 14px; font-size: 13px; margin: 10px 0 14px; }
.metrics dt { color: var(--ink-3); }
.metrics dd { margin: 0; font-family: var(--mono); font-size: 12px; color: var(--ink); }
.sheet-actions { display: flex; gap: 8px; flex-wrap: wrap; }

/* ------------------------------------------------------------- learn */
.picker { display: flex; flex-wrap: wrap; gap: 10px 16px; align-items: center; padding: 10px 14px; border-radius: var(--r-lg); margin-bottom: 14px; font-size: 13.5px; }
.picker label { display: inline-flex; align-items: center; gap: 8px; color: var(--ink-2); }
.picker select {
  font: 500 13.5px var(--sans); color: var(--ink); background: var(--glass-soft); border: 1px solid var(--glass-edge);
  border-radius: 999px; padding: 5px 10px; max-width: 60vw;
}
.learn-layout { display: grid; gap: 16px; grid-template-columns: minmax(0, 1fr); align-items: start; }
@media (min-width: 1000px) { .learn-layout { grid-template-columns: minmax(0, 1.25fr) minmax(360px, 1fr); } }
.learn-stage { position: relative; border-radius: var(--r-xl); overflow: hidden; height: min(72vh, 680px); min-height: 380px; }
@media (min-width: 1000px) { .learn-stage { position: sticky; top: 76px; } }
.learn-view { position: absolute; inset: 0; cursor: grab; touch-action: none; }
.stage-hud { position: absolute; left: 14px; top: 12px; right: 14px; pointer-events: none; }
.badge { display: inline-block; font: 600 12px var(--sans); padding: 4px 10px; border-radius: 999px; background: var(--glass-strong); border: 1px solid var(--glass-edge); }
.stage-foot { position: absolute; left: 12px; right: 12px; bottom: 12px; display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.stage-foot .pill:not(.primary) { background: var(--glass-strong); }
.dots { display: flex; gap: 6px; }
.dots button { width: 8px; height: 8px; border-radius: 99px; border: 0; padding: 0; background: var(--ink-3); opacity: 0.4; cursor: pointer; transition: width 0.2s; }
.dots button.on { opacity: 1; background: var(--accent); width: 22px; }
.steps { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.step {
  border-radius: var(--r-lg); padding: 14px 16px; cursor: pointer; transition: background 0.2s, opacity 0.2s;
  background: var(--glass-soft); border: 1px solid var(--glass-edge); opacity: 0.8;
}
.step:hover { opacity: 1; }
.step.on {
  background: var(--glass); box-shadow: var(--shadow); opacity: 1; cursor: default; border-color: var(--glass-border);
  -webkit-backdrop-filter: blur(26px) saturate(180%); backdrop-filter: blur(26px) saturate(180%);
}
.step h3 { display: flex; align-items: center; gap: 10px; font-size: 15.5px; }
.step h3 .num { width: 24px; height: 24px; border-radius: 99px; display: grid; place-items: center; font: 600 12px var(--sans); background: var(--glass-strong); border: 1px solid var(--glass-edge); flex: none; }
.step.on h3 .num { background: var(--accent); color: var(--accent-ink); border-color: transparent; }
.step .body { display: none; margin-top: 10px; font-size: 14px; color: var(--ink-2); }
.step.on .body { display: block; }
.step .body p { margin: 0 0 10px; }
.step table { width: 100%; border-collapse: collapse; font-size: 12.5px; margin: 6px 0 10px; }
.step th, .step td { text-align: left; padding: 4px 6px; border-bottom: 1px solid var(--glass-edge); }
.step th { color: var(--ink-3); font-weight: 500; }
.step td.num { font-family: var(--mono); font-size: 11.5px; color: var(--ink); white-space: nowrap; }
.formula { font-family: var(--mono); font-size: 12.5px; background: var(--glass-soft); border: 1px solid var(--glass-edge); border-radius: 10px; padding: 8px 10px; margin: 6px 0 10px; color: var(--ink); overflow-x: auto; white-space: nowrap; }
.sub-steps { display: flex; flex-wrap: wrap; gap: 6px; margin: 4px 0 10px; }
.sub-steps .pill { font-size: 12px; padding: 5px 10px; }
.sub-steps .pill.on { box-shadow: inset 0 0 0 1.5px var(--accent); background: var(--glass-strong); }
.slider { display: grid; grid-template-columns: 96px 1fr 56px; align-items: center; gap: 8px; font-size: 12.5px; margin: 4px 0; }
.slider input { width: 100%; accent-color: var(--accent); }
.slider output { font-family: var(--mono); font-size: 11.5px; text-align: right; color: var(--ink); }
.slider .lbl { display: inline-flex; align-items: center; gap: 6px; color: var(--ink); }
.methods { margin-top: 18px; }
.methods li { margin-bottom: 8px; }

.foot { width: calc(100% - 40px); max-width: 1500px; margin: 40px auto 30px; color: var(--ink-3); font-size: 12.5px; text-align: center; }
@media (prefers-reduced-motion: reduce) { .sheet { transition: none; } }

@media (max-width: 700px) { .learn-stage { height: 62vh; min-height: 340px; } }

/* ------------------------------------------------------------- atlas */
.atlas-tools input { font: 500 13.5px var(--sans); color: var(--ink); background: var(--glass-soft); border: 1px solid var(--glass-edge); border-radius: 999px; padding: 5px 12px; width: min(340px, 60vw); }
.atlas-stage { position: relative; }
.atlas-group { margin: 22px 0 8px; }
.atlas-group h2 { margin: 0 4px 10px; font-size: 17px; color: var(--ink-2); }
.atlas-cards { display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); }
.atlas-card {
  position: relative; display: block; text-decoration: none; color: var(--ink); border-radius: var(--r-lg); padding: 10px 12px 12px;
  transition: transform 0.2s, box-shadow 0.2s;
}
.atlas-card:hover { transform: translateY(-2px); box-shadow: 0 14px 44px rgba(40, 50, 90, 0.18); }
.atlas-card .view { height: 150px; margin: 0 -4px 6px; }
.atlas-card h3 { font-size: 15.5px; }
.atlas-card .f { font-size: 12.5px; color: var(--ink-2); }
.atlas-card .c { font-size: 11.5px; color: var(--ink-3); margin-top: 4px; line-height: 1.35; }
.atlas-card .n { position: absolute; right: 10px; top: 9px; font: 600 10.5px var(--sans); color: var(--ink-3); }
.atlas-card[hidden] { display: none; }

/* ------------------------------------------------------------- phones & tablets */
.hint, .grabber { display: none; }
@media (max-width: 999px) {
  .learn-stage { position: sticky; top: 62px; z-index: 10; height: 44vh; min-height: 250px; }
  .step { scroll-margin-top: calc(44vh + 74px); }
  .stage-foot .pill { padding: 5px 11px; }
}
@media (max-width: 620px) { .tabs { display: none; } }
@media (max-width: 700px) {
  .hero { padding: 22px 4px 12px; }
  h1 { font-size: 28px; }
  .lede { font-size: 14.5px; }
  .panel { padding: 14px 12px; border-radius: 22px; }
  .panel-head { align-items: flex-start; }
  .controls { gap: 5px; }
  .hint { display: block; color: var(--ink-3); font-size: 12px; margin: 8px 4px 0; text-align: center; }
  .matrix { gap: 4px; }
  .matrix { --axis-col: 0px; --cell-min: 84px; }
  .cell { min-width: 84px; }
  .hdr.row { white-space: normal; max-width: 96px; font-size: 10.5px; }
  .hdr.row span { display: none; }
  .axis-title.rows { visibility: hidden; overflow: hidden; width: 0; }
  .topbar { padding: 5px 6px 5px 10px; gap: 4px; }
  .navlink { padding: 6px 9px; }
  #menu-current { max-width: 110px; overflow: hidden; text-overflow: ellipsis; }
  .learn-tab { padding: 7px 10px; }
  .atlas-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
  .atlas-card { padding: 8px 10px 10px; }
  .atlas-card .view { height: 118px; }
  .atlas-card .c { display: none; }
  .sheet { padding: 8px 14px 16px; border-radius: 22px; }
  .grabber { display: block; width: 40px; height: 5px; border-radius: 99px; background: var(--ink-3); opacity: 0.4; margin: 0 auto 8px; }
  .sheet-view { height: 230px; }
  .slider { grid-template-columns: 84px 1fr 46px; }
  .picker { gap: 8px; }
  .step { padding: 12px 13px; }
}
@media (max-width: 420px) {
  .learn-tab .lt { display: none; }
  .brand img { width: 22px; height: 22px; }
}

.why { margin-bottom: 16px; }
.why-list { display: grid; gap: 10px; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); padding: 0; list-style: none; counter-reset: why; margin: 12px 0; }
.why-list li { counter-increment: why; position: relative; background: var(--glass-soft); border: 1px solid var(--glass-edge); border-radius: var(--r-md); padding: 12px 14px 12px 46px; font-size: 14px; }
.why-list li::before { content: counter(why); position: absolute; left: 13px; top: 12px; width: 22px; height: 22px; border-radius: 99px; display: grid; place-items: center; font: 600 12px var(--sans); color: var(--accent-ink); background: linear-gradient(180deg, var(--accent-2), var(--accent)); }
.why-list strong { color: var(--ink); display: block; margin-bottom: 2px; }