/* ============================================================================
   styles.css — STRUCTURE AND COMPOSITION. Keep this file.
   Brand values live in theme.css. Composition rules: references/design-system.md.

   The scaffold's job is to make the DESIGNED choice the easy one. Where a
   generic layout and a considered one cost the same, the considered one is the
   default here: asymmetric hero split, uneven pillar sizes, left-aligned stats
   with a source slot, one required signature moment.
   ========================================================================= */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
/* Only the desktop rail is fixed, so only desktop needs anchor clearance.
   Applying it on mobile leaves an 80px gap above every #form jump. */
@media (min-width: 900px) { html { scroll-padding-top: 5rem; } }
body { margin: 0; font-family: var(--font-body); font-size: var(--fs-body); font-weight: var(--fw-body);
  line-height: 1.55; color: var(--ink); background: var(--surface);
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
img, svg, video { max-width: 100%; height: auto; display: block; }

h1, h2, h3 { font-family: var(--font-display); font-weight: var(--fw-display);
  line-height: 1.06; letter-spacing: var(--tracking-display); margin: 0 0 .4em;
  text-wrap: balance; }            /* balance: no one-word last line in a headline */
h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); line-height: 1.25; letter-spacing: -.01em; }
p  { margin: 0 0 1rem; text-wrap: pretty; }   /* pretty: no orphans in body copy */
a  { color: inherit; }
strong { font-weight: 650; }

/* ---- the label treatment. ONE of these, page-wide. Mono is the default;
        for a non-technical brand swap to the small-caps sans variant. ---- */
.overline, .eyebrow {
  font-family: var(--font-mono); font-size: var(--fs-micro); font-weight: 500;
  letter-spacing: var(--tracking-label); text-transform: uppercase;
  color: var(--ink-faint); margin: 0 0 var(--s4); display: block; }
.overline--sans { font-family: var(--font-body); font-weight: 600; }

.measure  { max-width: 46ch; }
.measure-tight { max-width: 34ch; }
.lede { font-size: var(--fs-lede); color: var(--ink-muted); max-width: 46ch; }
.meta { font-size: var(--fs-micro); color: var(--ink-faint); }

/* ---- focus: per-surface, never removed ---- */
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 3px; }
.skip { position: absolute; left: -9999px; top: 0; z-index: 100; padding: .75rem 1rem;
  background: var(--ink); color: var(--surface); }
.skip:focus { left: 0; }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }

/* ============================================================================
   LAYOUT
   ========================================================================= */
.wrap { width: min(1180px, 100% - 2.5rem); margin-inline: auto; }
.wrap.narrow { width: min(760px, 100% - 2.5rem); }
.wrap.wide   { width: min(1400px, 100% - 2.5rem); }

/* Section rhythm is set per section, not globally. Even padding top to bottom
   across a whole page is the strongest uniformity tell there is. */
.section { padding-block: var(--pad-t, var(--s9)) var(--pad-b, var(--s9)); }
[data-density="tight"]   { --pad-t: var(--s7); --pad-b: var(--s7); }
[data-density="normal"]  { --pad-t: var(--s9); --pad-b: var(--s9); }
[data-density="loose"]   { --pad-t: var(--s10); --pad-b: var(--s10); }
[data-density="lead-in"] { --pad-t: var(--s9); --pad-b: var(--s5); }  /* runs into the next block */
.section-alt { background: var(--surface-alt); }

.hairline-top { border-top: 1px solid var(--hairline); }
hr.rule { border: 0; border-top: 1px solid var(--hairline); margin: var(--s6) 0; }

/* ============================================================================
   HEADER
   ========================================================================= */
.site-header { padding: var(--s4) 0; background: transparent; position: relative; z-index: 30; }
.header-row { display: flex; align-items: center; justify-content: space-between; gap: var(--s4); }
.site-header .header-cta { display: none; }
@media (min-width: 720px) { .site-header .header-cta { display: inline-flex; } }

/* Desktop sticky CTA: appears once the hero action has scrolled away.
   The single highest-value structural addition on a long page. */
.rail { position: fixed; inset: 0 0 auto 0; z-index: 35; background: var(--surface);
  border-bottom: 1px solid var(--hairline); transform: translateY(-100%);
  transition: transform .2s ease; }
.rail[data-shown] { transform: none; }
.rail-row { display: flex; align-items: center; justify-content: space-between; gap: var(--s4);
  padding: var(--s3) 0; }
.rail-claim { font-weight: 600; font-size: var(--fs-small); margin: 0; }
@media (max-width: 899px) { .rail { display: none; } }

/* ============================================================================
   HERO — asymmetric by default. 1fr 1fr reads as a template; 7/5 reads as a layout.

   THREE BLOCKS, NOT TWO, and the reason is mobile. Source order is
   lead (promise) → panel (the ask) → support (specifics, proof), so a phone gets
   the ask at ~380px instead of ~690px. Desktop reassembles it with grid areas, so
   the two-column layout is unchanged. Measured: the first submit button moved from
   1181px down the page to inside the first viewport.

   ⚠️ Trade-off, not a law: this puts the ask before the proof on mobile. Right for
   warm traffic (brand keyword, retargeting). For cold traffic, move .hero-proof
   into .hero-lead so one trust line lands above the form.
   ========================================================================= */
.hero { padding-block: var(--s8) var(--s9); position: relative; }
.hero-grid { display: grid; gap: var(--s6); align-items: start; }
@media (min-width: 900px) {
  .hero-grid {
    grid-template-columns: 7fr 5fr;
    /* The empty third row is load-bearing. The panel spans every row, and a
       spanning item distributes its extra height across INTRINSIC tracks — which
       silently inflated the gap between lead and support by 41px. Free space goes
       to an `fr` track first, so the filler row absorbs it instead. */
    grid-template-areas: "lead    panel"
                         "support panel"
                         ".       panel";
    grid-template-rows: max-content max-content 1fr;
    column-gap: var(--s8); row-gap: var(--s5);
    align-content: start;
  }
  .hero-lead    { grid-area: lead; }
  .hero-panel   { grid-area: panel; }
  .hero-support { grid-area: support; }
  .hero-grid.reverse { grid-template-areas: "panel lead" "panel support";
                       grid-template-columns: 5fr 7fr; }
}
.hero h1 { margin-bottom: var(--s4); }
.hero-points { list-style: none; padding: 0; margin: var(--s5) 0 0; display: grid; gap: var(--s2);
  color: var(--ink-muted); }
.hero-points li { padding-left: 1.4rem; position: relative; }
.hero-points li::before { content: ""; position: absolute; left: 0; top: .62em; width: .45rem;
  height: .45rem; background: currentColor; opacity: .45; border-radius: 50%; }
/* currentColor, not --accent: the action colour is chosen for buttons and is
   routinely wrong for a bullet. Bullets are not the action. */

/* Proof INSIDE the first viewport. Vapi runs a named quote directly under the
   hero; proof adjacent to the ask outperforms proof in a section below it. */
.hero-proof { margin-top: var(--s6); padding-top: var(--s5); border-top: 1px solid var(--hairline);
  display: flex; align-items: center; gap: var(--s4); flex-wrap: wrap;
  font-size: var(--fs-small); color: var(--ink-muted); }
.hero-proof img { filter: var(--logo-filter); opacity: .8; }
/* The grid row-gap already separates lead from support; a child's own margin-top
   would stack on top of it. Must come after the rules it overrides — equal
   specificity, so source order decides, and this was wrong the first time. */
.hero-support > :first-child { margin-top: 0; }

.hero-centered { text-align: center; max-width: 46rem; margin-inline: auto; }
.hero-centered .lede, .hero-centered .inline-capture { margin-inline: auto; }
.hero-centered .hero-points { justify-items: center; }

/* ============================================================================
   PANELS & FORMS
   ========================================================================= */
.hero-panel { background: var(--panel); color: var(--panel-ink); border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 2.6vw, 2rem); box-shadow: var(--shadow);
  border: 1px solid color-mix(in srgb, var(--panel-ink) 8%, transparent);
  transition: box-shadow .2s ease; }
.hero-panel:focus-within { box-shadow: var(--shadow-lift); }
.form-title { font-size: var(--fs-h3); margin-bottom: var(--s2); }
.form-sub { font-size: var(--fs-small); color: var(--ink-faint); margin: 0 0 var(--s5); }

.field { margin-bottom: var(--s4); }
.field-row { display: grid; gap: var(--s4); }
@media (min-width: 480px) { .field-row { grid-template-columns: 1fr 1fr; } }
.field label { display: block; font-size: var(--fs-small); font-weight: 600; margin-bottom: .35rem; }
.field .req { color: var(--ink-faint); font-weight: 400; }
.field input, .field select, .field textarea {
  width: 100%; font: inherit; font-size: 1rem; padding: .72rem .85rem;
  border: 1px solid var(--line); border-radius: var(--radius-sm);
  background: var(--input-bg); color: var(--panel-ink);
  transition: border-color .12s ease, box-shadow .12s ease; }
.field input:hover { border-color: color-mix(in srgb, var(--accent) 45%, var(--line)); }
.field input:focus { border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 16%, transparent); }
.field input[aria-invalid="true"] { border-color: var(--danger, #b3261e); }
.err { color: var(--danger, #b3261e); font-size: .82rem; margin: .35rem 0 0; }
.form-error-summary { border: 1px solid var(--danger, #b3261e); border-radius: var(--radius-sm);
  padding: var(--s3) var(--s4); margin-bottom: var(--s4); font-size: var(--fs-small); }
.fineprint { font-size: var(--fs-micro); color: var(--ink-faint); margin: var(--s3) 0 0; }
.form-success { text-align: left; }

/* The trust row belongs UNDER THE BUTTON, at the moment of commitment —
   not in the footer where nobody reads it. */
.trust-row { display: flex; flex-wrap: wrap; gap: var(--s2) var(--s4); margin: var(--s3) 0 0;
  padding: 0; list-style: none; font-family: var(--font-mono); font-size: var(--fs-micro);
  letter-spacing: .02em; color: var(--ink-faint); }
.trust-row li::before { content: "· "; }
.trust-row li:first-child::before { content: ""; }

/* ---- buttons ---- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  min-height: 48px; padding: .8rem 1.5rem; font: inherit; font-weight: 600; line-height: 1;
  border: 1px solid transparent; border-radius: var(--radius-sm); cursor: pointer;
  text-decoration: none; text-align: center;
  transition: background-color .14s ease, border-color .14s ease, transform .14s ease; }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-1px); }
.btn-primary:active { transform: none; }
.btn-ghost { background: transparent; color: inherit; border-color: color-mix(in srgb, currentColor 35%, transparent); }
.btn-ghost:hover { border-color: currentColor; }
.btn-block { width: 100%; }
.btn-lg { min-height: 54px; padding: .95rem 1.9rem; font-size: 1.05rem; }
@media (prefers-reduced-motion: reduce) { .btn:hover { transform: none; } }

/* ============================================================================
   PROOF
   ========================================================================= */
.proof { padding-block: var(--s7); }
.proof-head { display: flex; align-items: baseline; justify-content: space-between; gap: var(--s4);
  flex-wrap: wrap; margin-bottom: var(--s5); }
.proof-label { font-family: var(--font-mono); font-size: var(--fs-micro);
  letter-spacing: var(--tracking-label); text-transform: uppercase; color: var(--ink-faint); margin: 0; }
.logo-wall { list-style: none; padding: 0; margin: 0; display: grid; gap: var(--s6) var(--s7);
  grid-template-columns: repeat(2, 1fr); align-items: center; justify-items: start; }
@media (min-width: 720px) { .logo-wall { grid-template-columns: repeat(4, 1fr); } }
.logo-wall img { filter: var(--logo-filter); opacity: .85; }

/* ---- stat band: left-aligned, hairline-divided, mono labels, tabular figures,
        and A SLOT FOR THE SOURCE. The truth gate requires a citation for every
        number; if the layout has nowhere to put one, the rule loses. ---- */
.band { padding-block: var(--s8); }
.stat-row { display: grid; gap: var(--s6); grid-template-columns: 1fr; }
@media (min-width: 720px) { .stat-row { grid-template-columns: repeat(3, 1fr); gap: 0; } }
.stat { padding: 0; }
@media (min-width: 720px) {
  .stat { padding-inline: var(--s6); border-left: 1px solid var(--hairline); }
  .stat:first-child { padding-left: 0; border-left: 0; }
}
.stat-n { display: block; font-family: var(--font-display); font-size: var(--fs-stat);
  font-weight: var(--fw-display); line-height: .95; letter-spacing: -.03em;
  font-variant-numeric: tabular-nums lining-nums; }
.stat-l { display: block; font-size: var(--fs-small); color: var(--ink-muted);
  margin-top: var(--s3); max-width: 26ch; }
.stat-src { display: block; font-family: var(--font-mono); font-size: var(--fs-micro);
  color: var(--ink-faint); margin-top: var(--s2); }

/* ============================================================================
   PILLARS — BENTO BY DEFAULT. Three equal cards with equal-length bodies is
   the single most recognisable generated layout. Real features are uneven, so
   the grid is uneven: one lead card carrying a visual, two supporting.
   ========================================================================= */
.pillars { display: grid; gap: var(--s4); margin-top: var(--s7); grid-template-columns: 1fr; }
@media (min-width: 900px) {
  .pillars { grid-template-columns: repeat(12, 1fr); grid-auto-rows: minmax(0, auto); }
  .pillar { grid-column: span 4; }
  .pillars--bento .pillar:nth-child(1) { grid-column: span 7; grid-row: span 2; }
  .pillars--bento .pillar:nth-child(2),
  .pillars--bento .pillar:nth-child(3) { grid-column: 8 / span 5; }
}
.pillar { background: var(--card); border: 1px solid var(--hairline);
  border-radius: var(--radius-lg); padding: var(--s6); display: flex; flex-direction: column; }
.pillar h3 { margin-bottom: var(--s3); }
.pillar p { color: var(--ink-muted); margin: 0; }
.pillar-index { font-family: var(--font-mono); font-size: var(--fs-micro); color: var(--ink-faint);
  letter-spacing: var(--tracking-label); margin-bottom: var(--s4); display: block; }
.pillar-media { margin: var(--s5) -1px -1px; border-top: 1px solid var(--hairline);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg); overflow: hidden; margin-top: auto;
  padding-top: var(--s5); }

/* ============================================================================
   SPLIT — product demonstration. Alternates side automatically.
   ========================================================================= */
.split { display: grid; gap: var(--s7); align-items: center; grid-template-columns: 1fr; }
@media (min-width: 900px) { .split { grid-template-columns: 5fr 7fr; gap: var(--s8); } }
.split--flip .split-copy { order: 2; }
.split-media { margin: 0; border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--hairline); background: var(--surface-alt); }
.split-copy h2 { margin-bottom: var(--s4); }
.split-copy p { color: var(--ink-muted); max-width: 44ch; }

/* ============================================================================
   QUOTE — contained, with room for the logo and the number.
   ========================================================================= */
.quote { margin: 0; border-top: 2px solid var(--ink); padding-top: var(--s5); max-width: 52rem; }
.quote p { font-family: var(--font-display); font-weight: var(--fw-display);
  font-size: var(--fs-quote); line-height: 1.22; letter-spacing: -.02em; text-wrap: balance;
  margin: 0 0 var(--s5); }
.quote footer { display: flex; align-items: center; gap: var(--s4); flex-wrap: wrap;
  font-size: var(--fs-small); color: var(--ink-muted); }
.quote cite { font-style: normal; }
.quote img { filter: var(--logo-filter); opacity: .8; }

/* ============================================================================
   FAQ
   ========================================================================= */
.faq details { border-bottom: 1px solid var(--hairline); }
.faq details:first-of-type { border-top: 1px solid var(--hairline); }
.faq summary { cursor: pointer; padding: var(--s5) 2rem var(--s5) 0; font-weight: 600;
  list-style: none; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ""; position: absolute; right: .35rem; top: 50%;
  width: .7rem; height: .7rem; margin-top: -.5rem;
  border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg); opacity: .5; transition: transform .15s ease; }
.faq details[open] summary::after { transform: rotate(-135deg); margin-top: -.2rem; }
.faq .answer { padding: 0 2rem var(--s5) 0; color: var(--ink-muted); max-width: 62ch; }

/* ============================================================================
   CLOSE
   ========================================================================= */
.close { padding-block: var(--s9); }
.close-grid { display: grid; gap: var(--s7); grid-template-columns: 1fr; align-items: center; }
@media (min-width: 900px) { .close-grid { grid-template-columns: 6fr 5fr; gap: var(--s8); } }
.close-cta { background: var(--panel); color: var(--panel-ink); padding: var(--s6);
  border-radius: var(--radius-lg); align-self: center; }
.close-panel-claim { font-family: var(--font-display); font-weight: var(--fw-display);
  font-size: var(--fs-h3); line-height: 1.25; letter-spacing: -.01em; margin: 0 0 var(--s5);
  text-wrap: balance; }

/* ============================================================================
   SIGNATURE MOMENT — exactly one per page, and it is required.
   Every page in the exemplar set has one oversized editorial gesture:
   LangChain and Graphite close on a giant wordmark, Vapi drops a full-bleed
   band with a phone number. A page with none reads as assembled, not designed.
   Pick ONE of the three. Details: references/design-system.md
   ========================================================================= */
.signature { overflow: clip; }
.signature + .site-footer, .signature-wordmark + * { margin-top: var(--s3); }

/* 1. Wordmark — oversized, cropped by the viewport edge. */
.signature-wordmark { line-height: .78; margin: 0; padding-top: var(--s7);
  font-family: var(--font-display); font-weight: var(--fw-display);
  font-size: clamp(4rem, 17vw, 15rem); letter-spacing: -.045em;
  margin-left: -.055em;   /* optical alignment: cap side bearing, not the glyph box */
  color: color-mix(in srgb, currentColor 13%, transparent);
  white-space: nowrap; user-select: none; }

/* 2. Band — one piece of information at display size, full bleed. */
.signature-band { padding-block: var(--s7); }
.signature-band .wrap { display: flex; align-items: center; justify-content: space-between;
  gap: var(--s5); flex-wrap: wrap; }
.signature-band .big { font-family: var(--font-display); font-weight: var(--fw-display);
  font-size: var(--fs-display); letter-spacing: -.03em; line-height: 1;
  text-decoration: none; font-variant-numeric: tabular-nums; }

/* 3. Figure — a single number at display scale, with its source. */
.signature-figure { display: grid; gap: var(--s5); }
@media (min-width: 900px) { .signature-figure { grid-template-columns: 7fr 5fr; align-items: end; } }
.signature-figure .big { font-family: var(--font-display); font-weight: var(--fw-display);
  font-size: clamp(4rem, 13vw, 11rem); line-height: .82; letter-spacing: -.045em;
  font-variant-numeric: tabular-nums; margin: 0; }

/* ============================================================================
   FOOTER
   ========================================================================= */
.site-footer { padding-block: var(--s7) var(--s5); }
.footer-row { display: flex; flex-wrap: wrap; gap: var(--s5); justify-content: space-between;
  align-items: flex-start; }
.footer-meta { font-size: var(--fs-small); color: var(--ink-muted); }
.footer-meta p { margin: 0 0 .25rem; }
/* A tel: link on a landing page is a real action, not prose — give it a target.
   Inline links inside a sentence keep the WCAG 2.5.8 inline exception. */
.footer-meta a[href^="tel:"] { display: inline-flex; align-items: center; min-height: 44px;
  font-weight: 600; }
.copyright { font-size: var(--fs-micro); color: var(--ink-faint); margin-top: var(--s6); }

/* ---- sticky mobile CTA ---- */
.sticky-cta { position: fixed; inset: auto 0 0 0; z-index: 40;
  padding: var(--s3) var(--s4) max(var(--s3), env(safe-area-inset-bottom));
  background: var(--panel); border-top: 1px solid var(--hairline);
  box-shadow: 0 -8px 24px rgba(16,20,26,.10); }
@media (min-width: 900px) { .sticky-cta { display: none; } }
/* The bar is ~70px of fixed furniture over the end of the page. Without this the
   footer's last line sits underneath it. */
@media (max-width: 899px) { .site-footer { padding-bottom: calc(var(--s5) + 4.5rem); } }

/* ============================================================================
   HERO PATTERN COMPONENTS — used by assets/heroes/*.html
   ========================================================================= */
.inline-capture { display: grid; gap: var(--s3); margin: var(--s6) 0 var(--s3); max-width: 34rem; }
@media (min-width: 560px) { .inline-capture { grid-template-columns: 1fr auto; } }
.inline-capture input { width: 100%; font: inherit; font-size: 1rem; padding: .85rem 1rem;
  border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--input-bg);
  color: var(--panel-ink); }
.inline-capture .btn { white-space: nowrap; }
.capture-note { font-size: var(--fs-small); color: var(--ink-faint); margin: 0; }

/* ---- multi-step flow ---- */
.flow { border: 0; padding: 0; margin: 0; }
.flow-head { display: flex; align-items: baseline; justify-content: space-between; gap: var(--s4);
  margin-bottom: var(--s3); font-family: var(--font-mono); font-size: var(--fs-micro);
  letter-spacing: .04em; text-transform: uppercase; color: var(--ink-faint); }
.flow-track { height: 3px; border-radius: 2px; overflow: hidden; margin-bottom: var(--s5);
  background: color-mix(in srgb, currentColor 12%, transparent); }
.flow-bar { display: block; height: 100%; width: 0; background: var(--accent);
  transition: width .28s cubic-bezier(.2,.7,.3,1); }
.flow fieldset[data-step] { border: 0; padding: 0; margin: 0; }
.flow legend { font-family: var(--font-display); font-size: var(--fs-h3);
  font-weight: var(--fw-display); line-height: 1.22; padding: 0; margin-bottom: var(--s4);
  text-wrap: balance; }

.choices { display: grid; gap: var(--s2); margin: 0 0 var(--s5); }
@media (min-width: 560px) { .choices.two-up { grid-template-columns: 1fr 1fr; } }
.choice { display: flex; align-items: center; gap: var(--s3); padding: .9rem 1.05rem; cursor: pointer;
  border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--input-bg);
  color: var(--panel-ink); min-height: 48px;
  transition: border-color .12s ease, background-color .12s ease, transform .12s ease; }
.choice:hover { border-color: var(--accent); transform: translateX(2px); }
.choice input { accent-color: var(--accent); width: 1.1rem; height: 1.1rem; margin: 0; flex: none; }
.choice:has(input:checked) { border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 7%, var(--input-bg)); }
.choice:has(input:focus-visible) { outline: 3px solid var(--focus); outline-offset: 2px; }
.choice-note { display: block; font-size: var(--fs-micro); color: var(--ink-faint); }
@media (prefers-reduced-motion: reduce) { .choice:hover { transform: none; } }

.flow-actions { display: flex; align-items: center; gap: var(--s3); flex-wrap: wrap; }
.flow-back { background: none; border: 0; padding: .5rem .75rem; font: inherit; cursor: pointer;
  text-decoration: underline; color: var(--ink-faint);
  min-height: 44px; min-width: 44px; }   /* a real thumb target, not a text link */
.flow-result { padding: var(--s1) 0; }

/* ---- trial / signup ---- */
.sso-row { display: grid; gap: var(--s2); margin-bottom: var(--s4); }
.sso { display: flex; align-items: center; justify-content: center; gap: var(--s3); min-height: 48px;
  border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--input-bg);
  color: var(--panel-ink); font: inherit; font-weight: 600; cursor: pointer; text-decoration: none;
  transition: border-color .12s ease; }
.sso:hover { border-color: var(--accent); }
.divider { display: flex; align-items: center; gap: var(--s3); margin: var(--s4) 0;
  font-family: var(--font-mono); font-size: var(--fs-micro); color: var(--ink-faint); }
.divider::before, .divider::after { content: ""; flex: 1; height: 1px; background: var(--hairline); }
.friction-list { list-style: none; padding: 0; margin: var(--s4) 0 0; display: grid; gap: var(--s1);
  font-size: var(--fs-small); color: var(--ink-muted); }
.friction-list li { padding-left: 1.3rem; position: relative; }
.friction-list li::before { content: "✓"; position: absolute; left: 0; color: var(--ink-faint); }

/* ---- playground ---- */
.playground { display: grid; gap: var(--s3); }
.playground-bar { display: flex; gap: var(--s2); flex-wrap: wrap; align-items: center; }
.playground select, .playground input[type="text"] { font: inherit; font-size: 1rem;
  padding: .7rem .85rem; border: 1px solid var(--line); border-radius: var(--radius-sm);
  background: var(--input-bg); color: var(--panel-ink); flex: 1 1 12rem; }
.playground-out { min-height: 9rem; border: 1px solid var(--line); border-radius: var(--radius-sm);
  background: var(--surface-alt); color: var(--panel-ink); padding: var(--s4);
  font-family: var(--font-mono); font-size: var(--fs-micro); line-height: 1.6; overflow: auto;
  white-space: pre-wrap; }
.playground-wall { margin-top: var(--s4); padding-top: var(--s4);
  border-top: 1px solid var(--hairline); font-size: var(--fs-small); }

/* ---- scheduler slot ---- */
.scheduler { min-height: 26rem; display: grid; place-items: center; text-align: center;
  border: 1px dashed var(--line); border-radius: var(--radius-sm); padding: var(--s6);
  background: var(--input-bg); color: var(--panel-ink); }

/* ---- call ---- */
/* The primary action of the whole page. At 390px the type alone gave a 34px target;
   this is the one element on a call LP that a thumb must never miss. */
.call-number { display: inline-flex; align-items: center; min-height: 56px; padding-block: .4rem;
  font-family: var(--font-display);
  font-weight: var(--fw-display); font-size: clamp(2.1rem, 1.2rem + 3.6vw, 3.4rem); line-height: 1;
  text-decoration: none; letter-spacing: -.025em; font-variant-numeric: tabular-nums;
  margin: var(--s2) 0 var(--s2); }
.call-number:hover { text-decoration: underline; }
.call-hours { font-size: var(--fs-small); color: var(--ink-muted); margin: 0; }

/* ---- motion ---- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}