/*
Project: core.matrix.family
Company: Matrix Family Inc. (https://matrix.family)
Maintainer: Matrix Family Inc.
Contact: dev@matrix.family
Support: support@matrix.family
Matrix: @support:matrix.family
Date: 2026-08-30 UTC
Status: Updated
*/

/* All visual values come from the canonical brand tokens
   (/brand/tokens.css, git.matrix.family/dev/brand — the single source
   of truth). This file only aliases them into local shorthand names;
   defining a literal color/font/radius here is forbidden. */
:root {
  --bg: var(--mx-bg);
  --surface: var(--mx-surface);
  --surface-hover: var(--mx-surface-hover);
  --code-bg: var(--mx-code-bg);
  --text: var(--mx-text);
  --text-secondary: var(--mx-text-secondary);
  --text-muted: var(--mx-text-muted);
  --primary: var(--mx-primary);
  --primary-solid: var(--mx-primary-solid);
  --primary-muted: var(--mx-primary-muted);
  --accent: var(--mx-accent);
  --accent-muted: var(--mx-accent-muted);
  --border: var(--mx-border);
  --border-hover: var(--mx-border-hover);
  --radius-sm: var(--mx-radius-sm);
  --radius-md: var(--mx-radius-md);
  --radius-lg: var(--mx-radius-lg);
  --sans: var(--mx-font-sans);
  --mono: var(--mx-font-mono);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(ellipse at 50% 0%, var(--mx-primary-muted), transparent 55%),
    var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.55;
}

a {
  color: var(--primary);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

.wrap {
  max-width: 68rem;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* header */
header.site {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 0;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
}
.brand img.mark {
  width: 2.1rem;
  height: 2.1rem;
  display: block;
}
nav.site a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-left: 1.4rem;
}
nav.site a:hover {
  color: var(--text);
  text-decoration: none;
}

/* hero */
.hero {
  text-align: center;
  padding: 4.5rem 0 3rem;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.1rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
}
.hero h1 em {
  font-style: normal;
  color: var(--primary);
}
.hero p.lead {
  max-width: 42rem;
  margin: 0 auto 1.6rem;
  color: var(--text-secondary);
  font-size: 1.08rem;
}
.hero .facts {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem;
}
.fact {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 9999px;
  padding: 0.35rem 0.9rem;
  font-size: 0.82rem;
  color: var(--text-secondary);
}
.fact b {
  color: var(--text);
  font-weight: 600;
}

/* sections */
section {
  padding: 3.2rem 0;
  border-top: 1px solid var(--border);
}
section > .wrap > h2 {
  font-size: 1.6rem;
  letter-spacing: -0.01em;
  margin: 0 0 0.4rem;
}
.kicker {
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin: 0 0 0.6rem;
}
.sub {
  color: var(--text-secondary);
  max-width: 46rem;
  margin: 0 0 2rem;
}

.figure {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  padding: 1.2rem;
  margin: 0 0 2rem;
}
.figure img,
.figure svg {
  display: block;
  width: 100%;
  height: auto;
}

/* cards (brand .card primitive) */
.grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
}
.card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  padding: 1.3rem 1.3rem 1.1rem;
  transition: border-color 0.2s;
}
.card:hover {
  border-color: var(--border-hover);
}
.card.accent {
  border-color: var(--primary);
}
.card.accent:hover {
  border-color: var(--primary);
}
.card h3 {
  margin: 0 0 0.35rem;
  font-size: 1.12rem;
}
.card p.tag {
  margin: 0 0 0.8rem;
  color: var(--text-muted);
  font-size: 0.8rem;
}
.card ul {
  margin: 0;
  padding: 0;
  list-style: none;
}
.card li {
  color: var(--text-secondary);
  font-size: 0.88rem;
  padding: 0.28rem 0 0.28rem 1.1rem;
  position: relative;
}
.card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72rem;
  width: 0.42rem;
  height: 0.42rem;
  border-radius: 9999px;
  background: var(--primary);
}

/* split layout (numeric section) */
.split {
  display: grid;
  gap: 2rem;
  grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  align-items: center;
}
.split .figure {
  margin: 0;
}
@media (max-width: 46rem) {
  .split {
    grid-template-columns: 1fr;
  }
}

/* code blocks */
pre.code {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--code-bg);
  padding: 1rem 1.15rem;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin: 0;
}
pre.code .c {
  color: var(--text-muted);
}
pre.code .k {
  color: var(--primary);
}
pre.code .v {
  color: var(--text);
}
.code-title {
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  margin: 0 0 0.5rem;
}
.code-pair {
  display: grid;
  gap: 1.2rem;
  grid-template-columns: repeat(auto-fit, minmax(19rem, 1fr));
  margin-top: 1.6rem;
}

/* number pricing example */
.numbers {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: repeat(auto-fit, minmax(10.5rem, 1fr));
  margin-top: 1.4rem;
}
.num {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  padding: 0.9rem 1rem;
  text-align: center;
  transition: border-color 0.2s;
}
.num:hover {
  border-color: var(--border-hover);
}
.num .digits {
  font-family: var(--mono);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--text);
}
.num .kind {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.3rem;
}
.num.premium {
  border-color: var(--accent);
  background: linear-gradient(180deg, var(--accent-muted), transparent 65%), var(--surface);
}
.num.premium .kind {
  color: var(--accent);
}

/* matrix table */
table.matrix {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.86rem;
}
table.matrix th,
table.matrix td {
  border: 1px solid var(--border);
  padding: 0.55rem 0.7rem;
  text-align: center;
}
table.matrix th {
  background: var(--surface);
  color: var(--text);
  font-weight: 600;
}
table.matrix td:first-child,
table.matrix th:first-child {
  text-align: left;
}
table.matrix td {
  color: var(--text-secondary);
}
table.matrix td.yes {
  color: var(--primary);
  font-weight: 600;
}
table.matrix td.no {
  color: var(--text-muted);
}

/* footer */
footer.site {
  border-top: 1px solid var(--border);
  padding: 2rem 0 2.6rem;
  color: var(--text-muted);
  font-size: 0.82rem;
}
footer.site .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 2rem;
  justify-content: space-between;
}
footer.site p {
  margin: 0;
}