[hidden] { display: none !important; }
html:root { scroll-padding-top: calc(var(--par-chrome-bar, 0px) + 24px); }
button { font: inherit; cursor: pointer; -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--pil-cobalt); outline-offset: 5px; }

/* Hero */
.sr-hero { display: grid; grid-template-columns: 1.05fr 1fr; gap: clamp(24px, 4vw, 64px); align-items: center; padding-block: clamp(48px, 7vw, 92px) 72px; }
.sr-hero h1 { font-size: clamp(44px, 5.2vw, 72px); line-height: 1.04; max-width: 13ch; }
.sr-lead { margin-top: 26px; max-width: 44ch; font-size: 18px; color: var(--text-muted); }
.sr-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 20px 24px; margin-top: 30px; }
.sr-actions--center { justify-content: center; }
/* 44 px tall so a thumb can hit it; the text stays centered in the box */
.sr-text-link { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; color: var(--text); font-size: 15px; font-weight: 500; text-underline-offset: 5px; }
/* The site's main button: Par's tactile button, verbatim from the home and /knowledge
   (par-btn par-btn--primary cta). The kit's .pil-btn stays for app UI only. */
.par-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font: inherit;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  padding: 12px 20px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  text-decoration: none;
  color: oklch(from var(--par-btn) 0.34 calc(c + 0.05) h);
  background-color: transparent;
  background-image: linear-gradient(180deg, color-mix(in oklch, var(--par-btn) 88%, transparent), var(--par-btn));
  -webkit-backdrop-filter: blur(10px) saturate(160%);
  backdrop-filter: blur(10px) saturate(160%);
  box-shadow:
    0 3px 6px -1px oklch(0 0 0 / var(--par-sh-1)),
    0 14px 28px -6px oklch(0 0 0 / var(--par-sh-2)),
    0 26px 50px -12px oklch(0 0 0 / var(--par-sh-3));
  transition:
    background-color var(--par-dur-slow) ease,
    transform var(--par-dur) var(--par-ease),
    box-shadow var(--par-dur-slow) ease;
}
.par-btn::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(180deg, var(--par-glass-top), transparent 45%, var(--par-glass-brd));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  pointer-events: none;
}
.par-btn--primary { --par-btn: oklch(from var(--par-accent) 0.81 0.11 h); }
.par-btn:hover {
  background-color: var(--par-btn);
  transform: translateY(-1px) scale(1.025);
  box-shadow:
    0 6px 12px -2px oklch(0 0 0 / calc(var(--par-sh-1) + 0.05)),
    0 18px 36px -8px oklch(0 0 0 / calc(var(--par-sh-2) + 0.08)),
    0 38px 64px -12px oklch(0 0 0 / calc(var(--par-sh-3) + 0.1));
}
.par-btn:active {
  transform: translateY(1px) scale(.95);
  box-shadow: 0 1px 2px oklch(0 0 0 / var(--par-sh-2)), 0 4px 12px -5px oklch(0 0 0 / var(--par-sh-1));
  transition: transform var(--par-dur-fast) ease, box-shadow var(--par-dur-fast) ease;
}
.cta { padding: 17px 26px; min-height: 50px; border-radius: var(--par-r-sm); }
@media (prefers-reduced-motion: reduce) { .par-btn, .par-btn:hover, .par-btn:active { transition: none; transform: none; } }
.sr-hero-art { --sr-hero-r: var(--pil-panel-r); margin: 0; padding-inline: 0; }
.sr-hero-art::before { inset: 14% 2% 10%; border-radius: var(--sr-hero-r); }
/* The hero drawing's sleeve runs below its panel: clip it where the panel ends, so the arm comes in from the panel's edge instead of hanging under it. */
.sr-hero-art img { clip-path: inset(0 0 10% 0); }

/* Sections */
.sr-section { padding-block: clamp(56px, 7vw, 92px); border-top: 1px solid var(--border-strong); }
.sr-split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: clamp(28px, 5vw, 72px); align-items: center; }
.sr-split--flip { grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); }
.sr-copy h2, .sr-heading h2 { margin-top: 14px; font-size: clamp(34px, 4vw, 54px); }
.sr-copy > p:not(.sr-step) { margin-top: 18px; max-width: 46ch; font-size: 17px; color: var(--text-muted); }
.sr-heading { max-width: 760px; margin-inline: auto; text-align: center; }
.sr-heading > p:not(.sr-step):not(.pil-kicker) { margin: 20px auto 0; max-width: 58ch; font-size: 17px; color: var(--text-muted); }
.sr-step { display: flex; align-items: center; gap: 10px; font: 600 13px/1.4 var(--font-body); color: var(--text-muted); }
.sr-heading .sr-step { justify-content: center; }
.sr-step > span { display: grid; place-items: center; width: 26px; height: 26px; border-radius: 50%; background: var(--pil-ink); color: var(--bg); font: 600 12px/1 var(--font-body); letter-spacing: 0; }
.sr-art { margin: 0; }
.sr-art--wide { max-width: 1040px; margin: 34px auto 0; }
.sr-term { font: 0.9em/1 var(--font-mono); padding: 2px 6px 3px; border-radius: 6px; background: rgba(39, 71, 176, .1); color: var(--pil-cobalt); white-space: nowrap; }

/* Demos */
.sr-demo { margin-top: 44px; }
.sr-demo-label { display: flex; align-items: baseline; justify-content: center; flex-wrap: wrap; gap: 6px 14px; text-align: center; font-size: 13px; color: var(--text-muted); }
.sr-demo-label > span { font: 600 13px var(--font-body); color: var(--text); }
.sr-buttons { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; max-width: 820px; margin: 20px auto 0; }
.sr-buttons button { display: flex; flex-direction: column; min-height: 44px; padding: 13px 16px; border: 2px solid var(--border-strong); border-radius: 16px; background: transparent; color: var(--text); text-align: left; }
.sr-buttons button[aria-pressed="true"] { color: var(--pil-ink); border-color: var(--pil-ink); background: var(--pil-yellow-soft); box-shadow: 3px 3px 0 var(--pil-ink); }
.sr-buttons b { display: block; font-weight: 600; font-size: 15px; }
.sr-buttons small { display: block; margin-top: 2px; font-size: 12px; }
.sr-demo-grid { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); gap: 40px; align-items: start; max-width: 1060px; margin: 30px auto 0; }
.sr-chats { display: grid; gap: 24px; min-width: 0; }
.sr-chat .pil-ui-top, .sr-layer .pil-ui-top { padding: 16px 22px; background: var(--pil-panel); }
.sr-msg { margin: 18px 22px 0; padding: 14px 17px; border-radius: 16px; font-size: 15px; line-height: 1.55; }
.sr-msg > span { display: block; margin-bottom: 4px; font-size: 13px; font-weight: 600; }
.sr-msg--you { margin-left: 56px; background: #ede6d8; border-bottom-right-radius: 3px; }
.sr-msg--ai { margin-right: 44px; background: var(--pil-green-soft); border: 1px solid #b5cbb0; border-bottom-left-radius: 3px; }
.sr-chat-foot { margin: 18px 0 0; padding: 12px 22px 16px; border-top: 2px solid #e6dcc6; font-size: 14px; color: #5e5546; }
.sr-chat-foot b { color: var(--pil-ink); font-weight: 600; }
.sr-record { padding: 26px; border: 1.5px solid #cfbc84; border-radius: 3px 22px 22px 3px; background: var(--pil-yellow-soft); box-shadow: 3px 5px 0 #e7d9b7; transform: rotate(1deg); }
.sr-eyebrow { font: 600 13px/1.6 var(--font-body); color: #6a5a36; }
.sr-record h3 { margin: 8px 0 18px; font: 400 32px/1.1 var(--font-display); }
.sr-record ul { list-style: none; margin: 0; padding: 0; }
.sr-record li { display: grid; gap: 3px; padding: 13px 10px; margin-inline: -10px; border-top: 1px solid #dacb9c; transition: background var(--par-dur) ease; }
.sr-record li b { font-size: 13px; font-weight: 600; color: #6a5a36; }
.sr-record li span { font-size: 15px; font-weight: 500; line-height: 1.4; }
.sr-record li small { font: 600 13px/1.4 var(--font-body); color: var(--pil-cobalt); }
.sr-record li small:empty { display: none; }
.sr-record li.is-touched { background: #fff; border-top-color: transparent; border-radius: 10px; box-shadow: inset 0 0 0 2px var(--pil-ink); }
/* Read out to screen readers only: the pressed day already shows which chat is on screen. */
.sr-demo-status { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.sr-demo-close { margin-top: 30px; text-align: center; font: italic 21px/1.3 var(--font-display); color: var(--pil-cobalt); }

/* Two layers */
#layers .sr-demo { margin-top: 56px; }
.sr-layers { display: grid; grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr); gap: 18px; align-items: start; max-width: 1060px; margin: 30px auto 0; }
.sr-layers-arrow { align-self: center; font: 400 40px/1 var(--font-display); color: var(--pil-cobalt); }
.sr-items { list-style: none; margin: 0; padding: 4px 22px 20px; }
.sr-items li { padding-top: 16px; }
.sr-items li + li { margin-top: 16px; border-top: 2px dashed #e6dcc6; }
.sr-items p { margin-top: 6px; font-size: 15px; line-height: 1.55; }
.sr-kind { font: 600 13px/1.5 var(--font-body); color: var(--text-muted); }
.sr-records { display: grid; gap: 14px; padding: 18px 22px 4px; }
.sr-card { padding: 14px 16px; border: 2px solid var(--pil-ink); border-radius: 14px; background: #fff; }
.sr-card dl { margin: 8px 0 0; }
.sr-card dl > div { display: grid; grid-template-columns: 110px minmax(0, 1fr); gap: 10px; padding-block: 6px; border-top: 1px solid #ece3cf; }
.sr-card dt { font-size: 12px; color: var(--text-muted); }
.sr-card dd { margin: 0; font-size: 14.5px; font-weight: 500; line-height: 1.4; }
.sr-card--link { border-color: var(--pil-red); background: #fdeeea; }
.sr-link { display: grid; gap: 6px; margin-top: 8px; font-size: 14.5px; font-weight: 500; line-height: 1.4; }
.sr-link b { justify-self: start; padding: 3px 8px 2px; border-radius: 99px; background: var(--pil-red); color: #fff; font: 600 12px/1.4 var(--font-body); }

/* Pick up anywhere */
.sr-cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; max-width: 1060px; margin: 30px auto 0; }
.sr-point { padding: 24px; border: 2px solid var(--pil-ink); border-radius: 22px; background: var(--pil-paper); box-shadow: 4px 5px 0 var(--pil-ink); }
.sr-point h3 { margin: 0; font: 400 26px/1.15 var(--font-display); text-wrap: balance; }
.sr-point p { margin-top: 10px; font-size: 16px; color: #5e5546; }

/* Closing */
.sr-closing { padding: 58px 24px 62px; margin-block: 20px 84px; background: #211a10; color: #f7f0e1; border-radius: 32px; text-align: center; }
.sr-closing .pil-kicker { color: var(--pil-cobalt-soft); }
.sr-closing h2 { margin: 16px auto 0; font-size: clamp(38px, 4vw, 54px); }
.sr-closing > p:not(.pil-kicker) { margin-top: 18px; color: rgb(247 240 225 / .82); font-size: 17px; }
.sr-closing .sr-actions { margin-top: 26px; }
.sr-closing .sr-text-link { color: #f7f0e1; }
.sr-closing :focus-visible { outline-color: var(--pil-cobalt-soft); }

@media (max-width: 860px) {
  .sr-hero, .sr-split, .sr-split--flip { grid-template-columns: 1fr; }
  .sr-hero { gap: 18px; padding-block: 44px 54px; }
  .sr-hero h1 { font-size: clamp(42px, 9vw, 64px); max-width: 15ch; }
  .sr-hero-art { --sr-hero-r: 24px; max-width: 520px; width: 100%; margin-inline: auto; }
  .sr-split > .sr-art { order: 2; }
  .sr-demo-grid, .sr-layers, .sr-cards { grid-template-columns: 1fr; gap: 24px; }
  .sr-layers { gap: 12px; }
  .sr-layers-arrow { justify-self: center; transform: rotate(90deg); }
  .sr-record { transform: none; }

}
@media (max-width: 520px) {
  .sr-buttons { gap: 7px; }
  .sr-buttons button { padding: 11px 9px; }
  .sr-buttons b { font-size: clamp(12px, 3.75vw, 14px); }
  .sr-buttons small { font-size: 12px; }
  .sr-msg { margin-inline: 16px; font-size: 14px; }
  .sr-msg--you { margin-left: 28px; }
  .sr-msg--ai { margin-right: 20px; }
  .sr-chat .pil-ui-top, .sr-layer .pil-ui-top { padding: 14px 16px; }
  .sr-chat-foot { padding-inline: 16px; }
  .sr-items { padding-inline: 16px; }
  .sr-records { padding-inline: 14px; }
  .sr-card dl > div { grid-template-columns: 1fr; gap: 2px; }
  .sr-record { padding: 22px; }
  .sr-closing { margin-bottom: 60px; }
}
@media (prefers-reduced-motion: reduce) {
  .sr-record li { transition: none; }
}

/* The rest of the machine: what the drive holds */
.sr-parts { list-style: none; display: grid; gap: 10px; margin: 18px 0 0; padding: 0; max-width: 46ch; }
.sr-parts li { display: grid; gap: 2px; padding: 12px 16px; border: 1.5px solid var(--border-strong); border-radius: 14px; background: var(--surface); }
.sr-parts b { font-size: 16px; font-weight: 600; color: var(--text); }
.sr-parts span { font-size: 16px; line-height: 1.45; color: var(--text-muted); }
.sr-cards--two { grid-template-columns: repeat(2, minmax(0, 1fr)); }

@media (max-width: 860px) {
  .sr-cards--two { grid-template-columns: 1fr; }
}
/* The drawings' panels bleed to the screen's edge, as on /knowledge and /north-star: the figures'
   own margins above undo the kit's bleed, so it is set again here. */
@media (max-width: 760px) {
  .sr-hero-art, .sr-art, .sr-art--wide { width: auto; max-width: none; margin-inline: calc(-1 * var(--gutter)); }
  .sr-hero-art::before { inset: 14% 0 10%; }
}