/* Assaya: plain, confident, business-first. Text column with generous measure; product
   images framed as plates. Brand (docs/brand/README.md): Midnight Blue ink, one Cobalt accent for calls to action
   and small labels, Aqua sparingly; Montserrat headings, Public Sans text. */
:root {
  --bench: #f4f7fb;
  --paper: #ffffff;
  --ink: #0b1f3b;
  --ink-soft: #475569;
  --rule: #d8e0ea;
  --glass: rgba(255, 255, 255, .6);
  --glass-edge: rgba(255, 255, 255, .85);
  --lift: 0 1px 2px rgba(11, 31, 59, .05), 0 12px 28px -14px rgba(11, 31, 59, .22), 0 34px 64px -34px rgba(11, 31, 59, .30);
  --lit: radial-gradient(60vmax 50vmax at 88% -8%, rgba(47, 107, 255, .20), transparent 70%),
         radial-gradient(70vmax 60vmax at -12% 72%, rgba(34, 211, 197, .13), transparent 70%),
         radial-gradient(50vmax 40vmax at 55% 105%, rgba(47, 107, 255, .10), transparent 70%),
         linear-gradient(180deg, #f7f9fc, #eaf0f7);
  --accent: #2f6bff;               /* Cobalt: buttons, rules, marks */
  --accent-soft: #e6eeff;
  --accent-ink: #1d4ed8;           /* Cobalt as small text: 5.4:1 or better on every light ground */
  --aqua: #22d3c5;
  --shadow: 0 1px 0 rgba(11, 31, 59, .06), 0 12px 32px -18px rgba(11, 31, 59, .35);
  --display: "Montserrat", "Segoe UI", system-ui, sans-serif;
  --body: "Public Sans", "Segoe UI", system-ui, sans-serif;
  --wrap: 1120px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bench: #07152a; --paper: #0e2240; --ink: #e8eef7; --ink-soft: #a3b1c6; --rule: #1b355e;
    --glass: rgba(14, 34, 64, .55); --glass-edge: rgba(255, 255, 255, .08);
    --lift: 0 1px 2px rgba(0, 0, 0, .3), 0 18px 40px -18px rgba(0, 0, 0, .75);
    --lit: radial-gradient(60vmax 50vmax at 88% -8%, rgba(47, 107, 255, .30), transparent 70%),
           radial-gradient(70vmax 60vmax at -12% 72%, rgba(34, 211, 197, .12), transparent 70%),
           linear-gradient(180deg, #0a1a33, #061226);
    --accent: #5b8cff; --accent-soft: #14284a; --accent-ink: #9db8ff;
    --shadow: 0 1px 0 rgba(0, 0, 0, .3), 0 16px 36px -18px rgba(0, 0, 0, .8);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bench: #07152a; --paper: #0e2240; --ink: #e8eef7; --ink-soft: #a3b1c6; --rule: #1b355e;
    --glass: rgba(14, 34, 64, .55); --glass-edge: rgba(255, 255, 255, .08);
    --lift: 0 1px 2px rgba(0, 0, 0, .3), 0 18px 40px -18px rgba(0, 0, 0, .75);
    --lit: radial-gradient(60vmax 50vmax at 88% -8%, rgba(47, 107, 255, .30), transparent 70%),
           radial-gradient(70vmax 60vmax at -12% 72%, rgba(34, 211, 197, .12), transparent 70%),
           linear-gradient(180deg, #0a1a33, #061226);
  --accent: #5b8cff; --accent-soft: #14284a; --accent-ink: #9db8ff;
  --shadow: 0 1px 0 rgba(0, 0, 0, .3), 0 16px 36px -18px rgba(0, 0, 0, .8);
  color-scheme: dark;
}

/* base (sub-pages are served without the page skeleton, so they need these too) */
* { box-sizing: border-box; }
:root { padding-top: env(safe-area-inset-top, 0px); padding-bottom: env(safe-area-inset-bottom, 0px); }
[hidden] { display: none !important; }
img { max-width: 100%; }
body { margin: 0; background: var(--bench); color: var(--ink); font: 400 1.0625rem/1.6 var(--body); }
.wrap { max-width: var(--wrap); margin: 0 auto; padding-inline: clamp(16px, 4vw, 40px); }
h1, h2, h3 { font-family: var(--display); font-weight: 700; line-height: 1.1; text-wrap: balance; margin: 0; }
h1 { font-size: clamp(2.5rem, 6vw, 4.4rem); letter-spacing: -.02em; }
h2 { font-size: clamp(1.75rem, 3.4vw, 2.5rem); letter-spacing: -.01em; }
h3 { font-size: 1.3rem; font-weight: 600; }
p { margin: 0; }
a { color: inherit; }
.eyebrow { font: 600 .78rem/1 var(--body); letter-spacing: .12em; text-transform: uppercase; color: var(--accent-ink); }
.lede { font-size: 1.2rem; color: var(--ink-soft); max-width: 52ch; }
.muted { color: var(--ink-soft); }
.stack { display: grid; gap: 18px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

/* navigation */
.nav { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 10; border-bottom: 1px solid var(--rule);
  background: color-mix(in srgb, var(--bench) 90%, transparent); backdrop-filter: blur(8px); }
.nav .wrap { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 26px; padding-block: 14px; }
.brand { display: flex; align-items: center; text-decoration: none; }
.brand img { display: block; height: 34px; width: auto; }
.brand .logo-dark { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .brand .logo-dark { display: block; }
  :root:not([data-theme="light"]) .brand .logo-light { display: none; }
}
:root[data-theme="dark"] .brand .logo-dark { display: block; }
:root[data-theme="dark"] .brand .logo-light { display: none; }
.nav ul { display: flex; gap: 22px; list-style: none; margin: 0; padding: 0; font-size: .95rem; }
.nav ul a { text-decoration: none; color: var(--ink-soft); padding-block: 6px; border-bottom: 2px solid transparent; white-space: nowrap; }
.nav ul a:hover { color: var(--ink); }
.nav ul a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--accent); }
.nav .spacer { flex: 1; }

/* white paper banner above the header (every page but the white paper's own) */
.promo { display: block; background: var(--ink); color: var(--paper); text-decoration: none; font-size: .92rem; }
.promo .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 4px 12px; padding-block: 9px; text-align: center; }
.promo-tag { font: 700 .72rem/1 var(--body); letter-spacing: .12em; text-transform: uppercase; color: var(--ink);
  background: var(--accent-soft); padding: 5px 9px; border-radius: 999px; }
.promo-go { font-weight: 600; white-space: nowrap; text-decoration: underline; text-underline-offset: 3px; }
.promo:hover .promo-go { color: var(--accent-soft); }
.promo:focus-visible { outline-offset: -3px; }
@media (max-width: 640px) { .promo-desc { display: none; } }   /* phones: tag, title and link on one line */
@media (max-width: 1100px) {        /* the links take their own row below the logo and button */
  .nav ul { order: 3; width: 100%; overflow-x: auto; gap: 18px; padding-bottom: 2px; }
  .nav .spacer { display: none; }
  .nav .btn { margin-left: auto; padding: 10px 16px; }
}

/* buttons */
.btn { display: inline-flex; align-items: center; gap: 8px; font: 600 .95rem/1 var(--body); padding: 13px 20px; border-radius: 999px;
  text-decoration: none; border: 1px solid var(--ink); cursor: pointer; background: transparent; color: var(--ink); }
.btn.primary { background: var(--ink); color: var(--bench); }
.btn.primary:hover { background: var(--accent); border-color: var(--accent); color: var(--paper); }
.btn:not(.primary):hover { border-color: var(--accent); color: var(--accent-ink); }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; }

/* page header */
.page-head { padding-block: clamp(44px, 7vw, 88px) clamp(28px, 4vw, 48px); }
.page-head .wrap { display: grid; gap: 20px; }

/* sections */
section { padding-block: clamp(44px, 7vw, 88px); }
section + section, .page-head + section { border-top: 1px solid var(--rule); }
.head { display: grid; gap: 14px; max-width: 60ch; margin-bottom: 36px; }

/* home hero */
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: clamp(28px, 5vw, 64px); align-items: center;
  padding-block: clamp(44px, 7vw, 88px); }
.hero-copy { display: grid; gap: 24px; min-width: 0; }
@media (max-width: 900px) { .hero .wrap { grid-template-columns: minmax(0, 1fr); } }

/* outcome and feature cards */
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
@media (max-width: 900px) { .grid-3 { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 700px) { .grid-2 { grid-template-columns: minmax(0, 1fr); } }
.card { background: var(--paper); border: 1px solid var(--rule); border-radius: 8px; padding: 26px 24px; display: grid; gap: 10px; align-content: start; min-width: 0; }
a.card { color: inherit; text-decoration: none; transition: border-color .15s; }
a.card:hover, a.card:focus-visible { border-color: var(--accent); }
a.card h3 { color: var(--ink); }
.card p { color: var(--ink-soft); }
.example { font-size: .95rem; background: var(--accent-soft); border-radius: 6px; padding: 12px 14px; color: var(--ink); }
.example b { display: block; font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--accent-ink); margin-bottom: 4px; }

/* plates (product images) */
.plate { margin: 0; display: grid; gap: 10px; }
.plate img { display: block; width: 100%; height: auto; border-radius: 8px; border: 1px solid var(--rule); box-shadow: var(--shadow); background: var(--paper); }
.plate figcaption { font-size: .9rem; color: var(--ink-soft); }

/* split rows: copy beside an image */
.split { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.5fr); gap: clamp(24px, 4vw, 56px); align-items: center; }
.split + .split { margin-top: clamp(48px, 7vw, 88px); }
.split .copy { display: grid; gap: 14px; min-width: 0; }
.split ul, .checks { margin: 0; padding: 0; list-style: none; display: grid; gap: 8px; }
.checks li { padding-left: 1.6em; position: relative; color: var(--ink-soft); }
.checks li::before { content: ""; position: absolute; left: 0; top: .45em; width: .7em; height: .38em; border-left: 2px solid var(--accent); border-bottom: 2px solid var(--accent); transform: rotate(-45deg); }
@media (max-width: 900px) { .split { grid-template-columns: minmax(0, 1fr); } }

/* numbered steps (a real sequence) */
.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 28px; counter-reset: step; list-style: none; padding: 0; margin: 0; }
.steps.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.steps li { display: grid; gap: 10px; align-content: start; padding-top: 18px; border-top: 2px solid var(--ink); counter-increment: step; min-width: 0; }
.steps li::before { content: counter(step); font: 600 .85rem/1 var(--body); color: var(--accent-ink); }
.steps p { color: var(--ink-soft); }
@media (max-width: 900px) { .steps, .steps.three { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .steps, .steps.three { grid-template-columns: minmax(0, 1fr); } }

/* before/after table */
.table-wrap { overflow-x: auto; }
.compare { width: 100%; border-collapse: collapse; min-width: 560px; }
.compare th, .compare td { text-align: left; vertical-align: top; padding: 16px 14px; border-bottom: 1px solid var(--rule); }
.compare th { font-size: .8rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-soft); }
.compare td:first-child { font-weight: 600; width: 24%; }
.compare td:nth-child(2) { color: var(--ink-soft); }

/* legal pages */
.prose { max-width: 68ch; display: grid; gap: 14px; }
.prose h2 { font-size: 1.35rem; margin-top: 18px; }
.prose p, .prose ul { margin: 0; }
.prose ul { padding-left: 1.2em; display: grid; gap: 8px; }

/* questions */
.faq { display: grid; gap: 0; border-top: 1px solid var(--rule); }
.faq details { border-bottom: 1px solid var(--rule); padding-block: 16px; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq details p { color: var(--ink-soft); margin-top: 10px; max-width: 70ch; }

/* demo form */
.demo { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(28px, 5vw, 64px); align-items: start; }
form { display: grid; gap: 14px; background: var(--paper); border: 1px solid var(--rule); border-radius: 8px; padding: clamp(20px, 3vw, 32px); }
.field { display: grid; gap: 6px; }
.field label { font-size: .9rem; font-weight: 600; }
.field input, .field select { font: 400 1rem/1.3 var(--body); padding: 12px; border-radius: 6px; border: 1px solid var(--rule); background: var(--bench); color: var(--ink); width: 100%; }
.trap { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.note { font-size: .92rem; padding: 12px 14px; border-radius: 6px; background: var(--accent-soft); color: var(--ink); }
@media (max-width: 900px) { .demo { grid-template-columns: minmax(0, 1fr); } }

/* closing band */
.band { background: var(--ink); color: var(--bench); border-radius: 12px; padding: clamp(28px, 5vw, 56px); display: grid; gap: 18px; }
.band .muted { color: color-mix(in srgb, var(--bench) 75%, var(--ink)); }
.band .btn.primary { background: var(--accent); border-color: var(--accent); color: var(--paper); }
.band .btn.primary:hover { background: var(--bench); border-color: var(--bench); color: var(--ink); }

footer { border-top: 1px solid var(--rule); padding-block: 36px; font-size: .9rem; color: var(--ink-soft); }
footer .wrap { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 24px; }
footer ul { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px 18px; }
footer a { text-decoration: none; }
footer a:hover { color: var(--ink); }
@media (max-width: 700px) { footer .wrap { grid-template-columns: minmax(0, 1fr); } }

.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* depth: a lit blue background, frosted-glass cards over it, product images that float, a deep blue closing band */
body { background: var(--bench); }
body::before { content: ""; position: fixed; inset: 0; z-index: -1; background: var(--lit); pointer-events: none; }
.nav { background: color-mix(in srgb, var(--bench) 62%, transparent); backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%); box-shadow: 0 10px 30px -24px rgba(11, 31, 59, .5); }
.card, form, .faq details { background: var(--glass); border: 1px solid var(--glass-edge); box-shadow: var(--lift);
  backdrop-filter: blur(18px) saturate(150%); -webkit-backdrop-filter: blur(18px) saturate(150%); }
.faq { border-top: 0; gap: 10px; }
.faq details { border-radius: 8px; padding: 16px 20px; }
a.card { transition: border-color .15s, transform .15s, box-shadow .15s; }
a.card:hover, a.card:focus-visible { transform: translateY(-2px); }
.plate img { border-color: var(--glass-edge); box-shadow: var(--lift); }
.btn.primary { box-shadow: 0 12px 26px -12px rgba(11, 31, 59, .55); }
.band, .promo { background: radial-gradient(80% 140% at 100% 0%, rgba(34, 211, 197, .26), transparent 60%),
  linear-gradient(135deg, #13306b, #0b1f3b); color: #eef3f7; }
.band { box-shadow: 0 30px 60px -30px rgba(11, 31, 59, .7); }
.band .muted { color: rgba(238, 243, 247, .75); }
.band .btn.primary { background: #2f6bff; border-color: #2f6bff; color: #ffffff; }
.band .btn.primary:hover { background: #eef3f7; border-color: #eef3f7; color: #0b1f3b; }
.promo-tag { color: #0b1f3b; background: var(--aqua); }
.promo:hover .promo-go { color: var(--aqua); }
.field input, .field select { background: color-mix(in srgb, var(--paper) 70%, transparent); }
/* Safari can size a video in a grid by its 1920 px intrinsic width: let the figure and its track shrink, and cap the video. */
.plate.video { min-width: 0; grid-template-columns: minmax(0, 1fr); }
.plate video { display: block; width: 100%; max-width: 100%; height: auto; aspect-ratio: 16 / 9; border-radius: 8px; border: 1px solid var(--glass-edge); box-shadow: var(--lift); background: #0b1f3b; }

/* evidence showcase under the home page hero: the file, the finding, the decision, from the product itself */
.showcase { border-top: 0; padding-top: clamp(24px, 4vw, 48px); }
.evidence { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr) minmax(0, 1fr); gap: 20px; align-items: start; }
.evidence figure { margin: 0; display: grid; gap: 10px; }
.evidence .step { font: 600 .78rem/1 var(--body); letter-spacing: .12em; text-transform: uppercase; color: var(--accent-ink); }
.evidence img { display: block; width: 100%; height: auto; border-radius: 8px; border: 1px solid var(--glass-edge); box-shadow: var(--lift); background: #fff; }
.evidence figcaption { font-size: .92rem; color: var(--ink-soft); }
@media (max-width: 900px) { .evidence { grid-template-columns: minmax(0, 1fr); } }