/* Yosh site. Palette comes from the logo: folder blue, sky, pale blue, white; ink navy for text. */
@font-face {
  font-family: "Bricolage Grotesque";
  src: url("../fonts/bricolage.woff2") format("woff2");
  font-weight: 200 800;
  font-stretch: 75% 100%;
  font-display: swap;
}

:root {
  --blue: #146aff;
  --blue-text: #0f4fd1;      /* links and small text on light backgrounds (AA) */
  --blue-deep: #0b3fa8;
  --sky: #4eb6fd;
  --pale: #a6d6fc;
  --ink: #0a1b3d;
  --paper: #f5f8ff;
  --card: #ffffff;
  --muted: #4d5f82;
  --line: #d6e1f5;
  --heavy: #b9c5dc;           /* the "before" bars */
  --heavy-ink: #3b4a68;
  --xz: #7f9bd4;
  --on-blue: #ffffff;
  --band: #0a1b3d;
  --band-text: #eaf1ff;
  --focus: #4eb6fd;
  --display: "Bricolage Grotesque", "Segoe UI Variable Display", "Segoe UI", system-ui, sans-serif;
  --text: "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --r: 14px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --blue-text: #7fb2ff;
    --blue-deep: #a6d6fc;
    --ink: #e8efff;
    --paper: #071226;
    --card: #0d1e40;
    --muted: #9fb0d3;
    --line: #1d3263;
    --heavy: #3a4a6d;
    --heavy-ink: #c3d0ea;
    --xz: #4a6aa8;
    --band: #0d1e40;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 400 1.0625rem/1.62 var(--text);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; }
a { color: var(--blue-text); text-underline-offset: 3px; }
a:hover { color: var(--blue-deep); }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; border-radius: 6px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: var(--paper); padding: 8px 14px; border-radius: 8px; z-index: 50; }
.skip:focus { left: 8px; }
.wrap { width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.muted { color: var(--muted); }

/* ---------- header ---------- */
.top { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--paper) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
@supports not (background: color-mix(in srgb, red, blue)) { .top { background: var(--paper); } }
.top-in { display: flex; align-items: center; gap: 28px; height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); font: 800 1.45rem/1 var(--display); letter-spacing: -.01em; }
.brand:hover { color: var(--ink); }
.nav { display: flex; gap: 6px; margin-left: auto; }
.nb { white-space: nowrap; }
.nav a { padding: 8px 14px; border-radius: 10px; text-decoration: none; color: var(--ink); font-weight: 500; }
.nav a:hover { background: color-mix(in srgb, var(--blue) 10%, transparent); color: var(--ink); }
.nav a[aria-current="page"] { color: var(--blue-text); font-weight: 600; }

/* ---------- buttons ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 14px 26px; border-radius: 12px; background: var(--blue); color: var(--on-blue); font: 700 1.05rem/1.1 var(--display); text-decoration: none; border: 2px solid var(--blue); cursor: pointer; transition: background .15s, transform .15s; }
.btn:hover { background: var(--blue-deep); border-color: var(--blue-deep); color: #fff; }
.btn:active { transform: translateY(1px); }
.btn-sm { padding: 9px 18px; font-size: .95rem; border-radius: 10px; }
.btn-ghost { background: transparent; color: var(--blue-text); border-color: color-mix(in srgb, var(--blue) 45%, transparent); }
.btn-ghost:hover { background: color-mix(in srgb, var(--blue) 10%, transparent); color: var(--blue-text); border-color: var(--blue); }
@media (prefers-color-scheme: dark) { .btn-ghost:hover { color: #fff; } }
.btn-light { background: #fff; color: #0a1b3d; border-color: #fff; }
.btn-light:hover { background: var(--pale); border-color: var(--pale); color: #0a1b3d; }

/* ---------- hero ---------- */
.hero { padding: 72px 0 88px; }
.hero-in { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr); gap: 56px; align-items: center; }
.hero h1 {
  margin: 0 0 24px; font: 800 clamp(3.1rem, 8.4vw, 6.9rem)/.92 var(--display);
  font-stretch: 75%; letter-spacing: -.02em; text-wrap: balance;
}
.hero h1 span { display: block; }
.js .hero h1 { font-stretch: 100%; transition: font-stretch 1.1s cubic-bezier(.2, .8, .2, 1) .15s; }
.js .hero.in h1 { font-stretch: 75%; }
.lede { font-size: 1.22rem; max-width: 34em; color: var(--muted); margin: 0 0 32px; }
.cta-row { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.fine { margin: 18px 0 0; font-size: .95rem; color: var(--muted); }

/* the weight panel: real measurements, original size against xz and Yosh */
.weigh { background: var(--card); border: 1px solid var(--line); border-radius: 22px; padding: 22px 22px 18px; }
.weigh-tabs { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 20px; padding: 0; list-style: none; }
.weigh-tabs button { font: 600 .9rem/1 var(--text); color: var(--muted); background: transparent; border: 1px solid var(--line); border-radius: 999px; padding: 9px 14px; cursor: pointer; }
.weigh-tabs button:hover { color: var(--ink); border-color: var(--muted); }
.weigh-tabs button[aria-selected="true"] { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.weigh-head { font: 800 clamp(1.9rem, 4vw, 2.6rem)/1.05 var(--display); letter-spacing: -.01em; margin: 0 0 4px; font-stretch: 85%; }
.weigh-sub { margin: 0 0 20px; color: var(--muted); font-size: .98rem; }
.bars { display: grid; gap: 10px; }
.bar { display: grid; grid-template-columns: 78px 1fr; align-items: center; gap: 12px; }
.bar-name { font-weight: 600; font-size: .93rem; }
.bar-track { height: 46px; display: flex; align-items: center; gap: 10px; }
.bar-fill { height: 100%; border-radius: 10px; flex: none; transition: width 1s cubic-bezier(.2, .8, .2, 1); }
.bar-val { font: 700 .98rem/1 var(--display); white-space: nowrap; }
.bar-orig .bar-fill { background: repeating-linear-gradient(135deg, var(--heavy) 0 10px, color-mix(in srgb, var(--heavy) 80%, var(--paper)) 10px 20px); }
.bar-xz .bar-fill { background: var(--xz); }
.bar-yosh .bar-fill { background: var(--blue); }
.bar-yosh .bar-val { color: var(--blue-text); }
.weigh-note { margin: 16px 0 0; font-size: .86rem; color: var(--muted); }
.js .hero:not(.in) .bar-fill { width: 82% !important; }

/* ---------- sections ---------- */
.sec { padding: 84px 0; }
.sec + .sec { padding-top: 0; }
.sec h2 { margin: 0 0 14px; font: 800 clamp(2rem, 4.6vw, 3.1rem)/1.04 var(--display); letter-spacing: -.015em; font-stretch: 88%; text-wrap: balance; }
.sec-lede { font-size: 1.12rem; color: var(--muted); max-width: 38em; margin: 0 0 40px; }
.split { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 64px; align-items: start; }
.items { display: grid; gap: 0; margin: 0; padding: 0; list-style: none; }
.items li { padding: 22px 0; border-top: 1px solid var(--line); }
.items li:last-child { border-bottom: 1px solid var(--line); }
.items h3 { margin: 0 0 6px; font: 700 1.25rem/1.2 var(--display); }
.items p { margin: 0; color: var(--muted); }

/* illustration of the Explorer right-click menu */
.menu-art { margin: 0; }
.menu-art figcaption { margin-top: 12px; font-size: .88rem; color: var(--muted); }
.mock { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 26px; }
.mock-files { display: grid; gap: 8px; margin-bottom: 22px; }
.mock-file { display: flex; align-items: center; gap: 10px; padding: 8px 12px; border-radius: 8px; font-size: .95rem; }
.mock-file.sel { background: color-mix(in srgb, var(--blue) 16%, transparent); }
.mock-file i { width: 18px; height: 22px; border-radius: 3px; background: var(--pale); display: block; position: relative; }
.mock-file i.dir { height: 16px; background: var(--sky); border-radius: 3px 3px 3px 3px; }
.mock-menu { width: min(100%, 300px); margin-left: 34px; background: #fbfcff; color: #0a1b3d; border: 1px solid #c9d6ee; border-radius: 10px; padding: 6px; box-shadow: 0 18px 40px -18px rgba(10, 27, 61, .45); font-size: .95rem; }
@media (prefers-color-scheme: dark) { .mock-menu { background: #16264d; color: #e8efff; border-color: #2b427c; } }
.mock-menu div { padding: 8px 12px; border-radius: 6px; display: flex; align-items: center; gap: 10px; }
.mock-menu .hot { background: var(--blue); color: #fff; font-weight: 700; }
.mock-menu .hot img { width: 20px; height: 20px; }
.mock-menu hr { border: 0; border-top: 1px solid rgba(120, 140, 180, .35); margin: 4px 6px; }

/* levels table */
.levels { width: 100%; border-collapse: collapse; font-size: 1rem; }
.levels th, .levels td { text-align: left; padding: 16px 16px 16px 0; border-top: 1px solid var(--line); vertical-align: top; }
.levels thead th { border-top: 0; padding-top: 0; font-size: .9rem; color: var(--muted); font-weight: 600; }
.levels tbody th { font: 700 1.1rem/1.3 var(--display); }
.levels tr:last-child td, .levels tr:last-child th { border-bottom: 1px solid var(--line); }
.tbl-wrap { overflow-x: auto; }

.facts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 36px 56px; margin: 0; padding: 0; list-style: none; }
.facts li { border-top: 3px solid var(--blue); padding-top: 16px; }
.facts h3 { margin: 0 0 6px; font: 700 1.25rem/1.2 var(--display); }
.facts p { margin: 0; color: var(--muted); }

/* closing band */
.band { background: var(--band); color: var(--band-text); padding: 88px 0; margin-top: 40px; }
.band h2 { color: #fff; font: 800 clamp(2.4rem, 6.4vw, 4.6rem)/.98 var(--display); font-stretch: 75%; margin: 0 0 20px; letter-spacing: -.02em; }
.band p { margin: 0 0 30px; color: #b8c9ec; max-width: 34em; font-size: 1.1rem; }

/* ---------- inner pages ---------- */
.page-head { padding: 64px 0 36px; }
.page-head h1 { margin: 0 0 12px; font: 800 clamp(2.4rem, 6vw, 4rem)/1 var(--display); letter-spacing: -.02em; font-stretch: 82%; }
.page-head p { margin: 0; font-size: 1.2rem; color: var(--muted); max-width: 36em; }
.page { padding-bottom: 96px; }
.prose { max-width: 44rem; }
.prose h2 { margin: 52px 0 12px; font: 800 1.9rem/1.12 var(--display); letter-spacing: -.01em; font-stretch: 90%; }
.prose h3 { margin: 30px 0 8px; font: 700 1.25rem/1.2 var(--display); }
.prose p, .prose ul, .prose ol { margin: 0 0 16px; }
.prose li { margin-bottom: 6px; }
.prose code, .kbd { font: 500 .92em/1 ui-monospace, "Cascadia Mono", Consolas, monospace; background: color-mix(in srgb, var(--blue) 10%, transparent); padding: 2px 6px; border-radius: 6px; }
.prose pre { margin: 0 0 18px; padding: 14px 16px; overflow-x: auto; background: var(--card); border: 1px solid var(--line); border-radius: 12px; font: 500 .93rem/1.5 ui-monospace, "Cascadia Mono", Consolas, monospace; }
.prose pre code { background: none; padding: 0; font-size: inherit; }
.toc { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 8px; padding: 0; list-style: none; }
.toc a { display: block; padding: 8px 14px; border: 1px solid var(--line); border-radius: 999px; text-decoration: none; font-weight: 600; font-size: .95rem; }
.toc a:hover { border-color: var(--blue); }
.note { border-left: 4px solid var(--sky); background: color-mix(in srgb, var(--sky) 12%, transparent); padding: 14px 18px; border-radius: 0 10px 10px 0; margin: 0 0 18px; }
.note p:last-child { margin-bottom: 0; }

.dl-list { display: grid; gap: 16px; }
.dl { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px 32px; align-items: center; background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 24px 26px; }
.dl.main { border: 2px solid var(--blue); }
.dl h2 { margin: 0 0 4px; font: 800 1.5rem/1.15 var(--display); }
.dl .req { margin: 0 0 10px; color: var(--muted); }
.dl .tag { display: inline-block; margin-left: 10px; padding: 3px 10px; border-radius: 999px; background: var(--blue); color: #fff; font: 600 .78rem/1.4 var(--text); vertical-align: middle; }
.dl .sum { grid-column: 1 / -1; margin-top: 6px; font-size: .9rem; color: var(--muted); display: flex; flex-wrap: wrap; gap: 6px 10px; align-items: center; }
.dl .sum code { word-break: break-all; font: 500 .82rem/1.4 ui-monospace, Consolas, monospace; }
.copy { font: 600 .82rem/1 var(--text); background: transparent; border: 1px solid var(--line); color: var(--blue-text); border-radius: 8px; padding: 6px 10px; cursor: pointer; }
.copy:hover { border-color: var(--blue); }
.dl.off { opacity: .7; }

details { border-top: 1px solid var(--line); padding: 4px 0; }
details:last-of-type { border-bottom: 1px solid var(--line); }
summary { cursor: pointer; padding: 14px 0; font: 700 1.15rem/1.3 var(--display); list-style: none; display: flex; justify-content: space-between; gap: 16px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; font-size: 1.5rem; line-height: 1; color: var(--blue-text); }
details[open] summary::after { content: "\2212"; }
details > div { padding: 0 0 14px; max-width: 44rem; }
details > div > :last-child { margin-bottom: 0; }

.grid-table { width: 100%; border-collapse: collapse; font-size: .98rem; }
.grid-table th, .grid-table td { text-align: left; padding: 12px 14px 12px 0; border-top: 1px solid var(--line); vertical-align: top; }
.grid-table thead th { border-top: 0; color: var(--muted); font-weight: 600; font-size: .9rem; }
.grid-table tr:last-child td { border-bottom: 1px solid var(--line); }

/* ---------- footer ---------- */
.foot { border-top: 1px solid var(--line); padding: 44px 0 56px; margin-top: 0; }
.foot-in { display: grid; grid-template-columns: minmax(0, 1.6fr) repeat(2, minmax(0, 1fr)); gap: 32px; }
.foot-brand p { margin: 10px 0 0; }
.foot-col { display: flex; flex-direction: column; gap: 8px; align-items: flex-start; }
.foot-col h2 { margin: 0 0 4px; font: 700 .95rem/1.2 var(--display); }
.foot-col a { color: var(--ink); text-decoration: none; }
.foot-col a:hover { color: var(--blue-text); text-decoration: underline; }

/* ---------- small screens ---------- */
@media (max-width: 900px) {
  .hero { padding: 44px 0 64px; }
  .hero-in, .split { grid-template-columns: 1fr; gap: 40px; }
  .facts { grid-template-columns: 1fr; }
  .foot-in { grid-template-columns: 1fr 1fr; }
  .foot-brand { grid-column: 1 / -1; }
  .dl { grid-template-columns: 1fr; }
  .sec { padding: 60px 0; }
}
@media (max-width: 560px) {
  .wrap { padding: 0 18px; }
  .top-in { gap: 8px; }
  .nav a { padding: 8px 9px; }
  .brand span { display: none; }
  .top .btn-sm { display: none; }          /* the nav already has Download */
  .nav { margin-left: auto; }
  .bar { grid-template-columns: 62px 1fr; gap: 8px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .hero h1, .bar-fill { transition: none; }
}