/* ==========================================================================
   Real Estate by the Block — realestatebytheblock.com
   Design system & global styles. Vanilla CSS, zero external dependencies.
   Author: Real Estate by the Block. License: proprietary content.
   ========================================================================== */

/* ---------- Design tokens ------------------------------------------------- */
:root {
  color-scheme: light dark;

  /* Type — system stacks only (no third-party fonts: fast + GDPR-clean) */
  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --font-display: var(--font-sans);
  --font-mono: ui-monospace, "SF Mono", "Cascadia Code", "JetBrains Mono",
    "Roboto Mono", Menlo, Consolas, "Liberation Mono", monospace;

  /* Fluid type scale */
  --step--1: clamp(0.83rem, 0.79rem + 0.18vw, 0.92rem);
  --step-0: clamp(1rem, 0.95rem + 0.22vw, 1.13rem);
  --step-1: clamp(1.2rem, 1.11rem + 0.42vw, 1.5rem);
  --step-2: clamp(1.44rem, 1.29rem + 0.73vw, 2rem);
  --step-3: clamp(1.73rem, 1.5rem + 1.16vw, 2.66rem);
  --step-4: clamp(2.07rem, 1.72rem + 1.77vw, 3.55rem);
  --step-5: clamp(2.49rem, 1.95rem + 2.68vw, 4.74rem);

  /* Spacing scale (multiples) */
  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-5: 1.5rem;
  --sp-6: 2rem;
  --sp-7: 3rem;
  --sp-8: 4rem;
  --sp-9: 6rem;
  --sp-10: 8rem;

  --radius: 14px;
  --radius-sm: 9px;
  --radius-lg: 22px;
  --maxw: 1180px;
  --maxw-prose: 68ch;
  --border-w: 1px;

  /* Light palette (warm, low-saturation neutrals) */
  --bg: #f6f5f1;
  --bg-tint: #efede6;
  --surface: #ffffff;
  --surface-2: #f3f1ec;
  --text: #16181f;
  --text-muted: #545d6c;
  --text-faint: #7a8291;
  --border: #e3e0d8;
  --border-strong: #cfccc2;

  /* Dual accents — blockchain (azure) × real-estate value (gold).
     Same lightness/chroma family, hue apart (OKLCH-derived). */
  --accent-1: #2f6fe4;        /* azure — blockchain / technology */
  --accent-1-ink: #1f52b0;    /* darker azure for text on light */
  --accent-1-soft: #e7effd;
  --accent-2: #b7822c;        /* gold — property value */
  --accent-2-ink: #8f6410;    /* darker gold for text on light */
  --accent-2-soft: #f6efdd;

  --ink-hero: #0a0d16;        /* deep midnight used for hero band */
  --on-ink: #eef1f7;
  --on-ink-muted: #a7b0c2;

  --shadow-sm: 0 1px 2px rgba(16, 18, 25, 0.06),
    0 2px 8px rgba(16, 18, 25, 0.05);
  --shadow-md: 0 4px 14px rgba(16, 18, 25, 0.08),
    0 14px 40px rgba(16, 18, 25, 0.08);
  --shadow-lg: 0 10px 30px rgba(16, 18, 25, 0.12),
    0 30px 80px rgba(16, 18, 25, 0.14);

  --focus: 0 0 0 3px var(--accent-1-soft), 0 0 0 5px var(--accent-1);
  --ring: color-mix(in srgb, var(--accent-1) 55%, transparent);
}

/* Dark palette — applied by system preference and by explicit toggle. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #090c14;
    --bg-tint: #0d111c;
    --surface: #10141f;
    --surface-2: #161b29;
    --text: #eef1f7;
    --text-muted: #a7b0c2;
    --text-faint: #7f899b;
    --border: #232a3b;
    --border-strong: #313a50;
    --accent-1: #5f97ff;
    --accent-1-ink: #9ec0ff;
    --accent-1-soft: #14203a;
    --accent-2: #e2b163;
    --accent-2-ink: #f0cd93;
    --accent-2-soft: #241d0e;
    --on-ink: #eef1f7;
    --on-ink-muted: #a7b0c2;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.45);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.55);
  }
}

:root[data-theme="dark"] {
  --bg: #090c14;
  --bg-tint: #0d111c;
  --surface: #10141f;
  --surface-2: #161b29;
  --text: #eef1f7;
  --text-muted: #a7b0c2;
  --text-faint: #7f899b;
  --border: #232a3b;
  --border-strong: #313a50;
  --accent-1: #5f97ff;
  --accent-1-ink: #9ec0ff;
  --accent-1-soft: #14203a;
  --accent-2: #e2b163;
  --accent-2-ink: #f0cd93;
  --accent-2-soft: #241d0e;
  --on-ink: #eef1f7;
  --on-ink-muted: #a7b0c2;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.55);
}

/* ---------- Reset & base -------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

body {
  font-family: var(--font-sans);
  font-size: var(--step-0);
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img,
svg,
picture { display: block; max-width: 100%; }
svg { height: auto; }

a { color: var(--accent-1-ink); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--accent-2-ink); }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 700;
  text-wrap: balance;
  color: var(--text);
}

p { text-wrap: pretty; }

:focus-visible {
  outline: 2px solid var(--accent-1);
  outline-offset: 2px;
  border-radius: 4px;
}

::selection { background: var(--accent-1); color: #fff; }

/* ---------- Layout helpers ------------------------------------------------ */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: clamp(1.15rem, 4vw, 2.5rem);
}

.section { padding-block: clamp(3.5rem, 8vw, 7rem); }
.section--tight { padding-block: clamp(2.5rem, 5vw, 4rem); }

.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-1-ink);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}
.eyebrow::before {
  content: "";
  width: 1.6rem;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-1), var(--accent-2));
  border-radius: 2px;
}
.eyebrow--gold { color: var(--accent-2-ink); }

.lead { font-size: var(--step-1); color: var(--text-muted); max-width: 60ch; }

.section-head { max-width: 62ch; margin-bottom: var(--sp-7); }
.section-head h2 { font-size: var(--step-3); margin-top: var(--sp-3); }
.section-head p { margin-top: var(--sp-4); color: var(--text-muted); font-size: var(--step-1); }
.center { text-align: center; margin-inline: auto; }

/* ---------- Buttons ------------------------------------------------------- */
.btn {
  --_bg: var(--accent-1);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: var(--step-0);
  line-height: 1;
  padding: 0.85rem 1.35rem;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease,
    border-color 0.2s ease, color 0.2s ease;
  white-space: nowrap;
}
.btn svg { width: 1.05em; height: 1.05em; }
.btn--primary {
  background: linear-gradient(135deg, var(--accent-1), var(--accent-1-ink));
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); color: #fff; }
.btn--ghost {
  background: transparent;
  border-color: var(--border-strong);
  color: var(--text);
}
.btn--ghost:hover { border-color: var(--accent-1); color: var(--accent-1-ink); transform: translateY(-2px); }
.btn--on-ink {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.22);
  color: var(--on-ink);
  backdrop-filter: blur(6px);
}
.btn--on-ink:hover { background: rgba(255, 255, 255, 0.14); color: #fff; transform: translateY(-2px); }

/* ---------- Header / nav -------------------------------------------------- */
.skip-link {
  position: absolute;
  left: 0.75rem;
  top: -3.5rem;
  z-index: 200;
  background: var(--surface);
  color: var(--text);
  padding: 0.6rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--border-strong);
  transition: top 0.2s ease;
}
.skip-link:focus { top: 0.75rem; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.site-header[data-scrolled="true"] { border-bottom-color: var(--border); }
.nav {
  display: flex;
  align-items: center;
  gap: var(--sp-5);
  min-height: 4.6rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  font-size: 1.06rem;
  color: var(--text);
  text-decoration: none;
  margin-right: auto;
}
.brand:hover { color: var(--text); }
.brand__mark { width: 2.1rem; height: 2.1rem; flex: none; }
.brand__name b { color: var(--accent-1-ink); font-weight: 700; }
.brand__name span { color: var(--accent-2-ink); }

.nav__links {
  display: flex;
  align-items: center;
  gap: clamp(0.4rem, 1.6vw, 1.35rem);
  list-style: none;
  padding: 0;
}
.nav__links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: var(--step--1);
  font-weight: 500;
  padding: 0.4rem 0.2rem;
  transition: color 0.15s ease;
}
.nav__links a:hover { color: var(--text); }

.nav__side { display: flex; align-items: center; gap: var(--sp-3); }

.lang-switch {
  display: inline-flex;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
}
.lang-switch a {
  padding: 0.35rem 0.6rem;
  color: var(--text-muted);
  text-decoration: none;
  letter-spacing: 0.04em;
}
.lang-switch a[aria-current="true"] { background: var(--accent-1); color: #fff; }

.theme-toggle {
  display: inline-grid;
  place-items: center;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease;
}
.theme-toggle:hover { border-color: var(--accent-1); color: var(--accent-1-ink); }
.theme-toggle svg { width: 1.2rem; height: 1.2rem; }
.theme-toggle .icon-moon { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun,
:root:not([data-theme="light"]) .theme-toggle .icon-sun { display: block; }
:root[data-theme="dark"] .theme-toggle .icon-moon,
:root:not([data-theme="light"]) .theme-toggle .icon-moon { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .icon-sun { display: none; }
  :root:not([data-theme="light"]) .theme-toggle .icon-moon { display: block; }
}
:root[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: block; }
:root[data-theme="light"] .theme-toggle .icon-sun { display: block; }
:root[data-theme="light"] .theme-toggle .icon-moon { display: none; }

.nav__toggle {
  display: none;
  width: 2.6rem; height: 2.6rem;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
}
.nav__toggle svg { width: 1.3rem; height: 1.3rem; margin-inline: auto; }

@media (max-width: 860px) {
  .nav__toggle { display: inline-grid; place-items: center; }
  .nav__links {
    position: absolute;
    inset: 4.6rem 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    padding: var(--sp-3) clamp(1.15rem, 4vw, 2.5rem) var(--sp-5);
    transform: translateY(-120%);
    transition: transform 0.28s ease;
    max-height: calc(100dvh - 4.6rem);
    overflow-y: auto;
  }
  .nav__links[data-open="true"] { transform: translateY(0); }
  .nav__links a { padding: 0.85rem 0; border-bottom: 1px solid var(--border); font-size: var(--step-0); }
}

/* ---------- Hero ---------------------------------------------------------- */
.hero {
  position: relative;
  isolation: isolate;
  background: var(--ink-hero);
  color: var(--on-ink);
  overflow: hidden;
}
.hero__bg { position: absolute; inset: 0; z-index: -2; overflow: hidden; }
.hero__bg::before {
  /* gradient mesh */
  content: "";
  position: absolute;
  inset: -20%;
  background:
    radial-gradient(38% 44% at 18% 22%, rgba(47, 111, 228, 0.42), transparent 60%),
    radial-gradient(34% 40% at 82% 30%, rgba(183, 130, 44, 0.34), transparent 62%),
    radial-gradient(50% 55% at 62% 88%, rgba(47, 111, 228, 0.24), transparent 60%);
  filter: blur(8px);
  animation: meshDrift 26s ease-in-out infinite alternate;
}
@keyframes meshDrift {
  from { transform: translate3d(-2%, -1%, 0) scale(1.02); }
  to { transform: translate3d(3%, 2%, 0) scale(1.08); }
}
.hero__grid-svg { position: absolute; inset: 0; z-index: -1; width: 100%; height: 100%; opacity: 0.5; }

.hero__inner {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
  padding-block: clamp(4rem, 10vw, 7.5rem);
}
.hero__eyebrow { color: var(--on-ink); }
.hero__eyebrow.eyebrow::before { background: linear-gradient(90deg, #6ea0ff, #e2b163); }
.hero h1 {
  color: #fff;
  font-size: var(--step-5);
  margin-top: var(--sp-4);
  letter-spacing: -0.03em;
}
.hero h1 .grad {
  background: linear-gradient(100deg, #7fb0ff 0%, #e2b163 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__sub {
  margin-top: var(--sp-5);
  font-size: var(--step-1);
  color: var(--on-ink-muted);
  max-width: 46ch;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: var(--sp-3); margin-top: var(--sp-6); }
.hero__meta {
  margin-top: var(--sp-7);
  display: flex;
  flex-wrap: wrap;
  gap: clamp(1rem, 4vw, 2.6rem);
  padding-top: var(--sp-5);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}
.hero__meta div { min-width: 8rem; }
.hero__meta dt {
  font-family: var(--font-mono);
  font-size: 1.9rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
}
.hero__meta dd { font-size: var(--step--1); color: var(--on-ink-muted); margin-top: 0.15rem; }
.hero__meta dt .u { color: #e2b163; }

.hero__art { position: relative; }
.hero__art svg { width: 100%; height: auto; filter: drop-shadow(0 30px 60px rgba(0, 0, 0, 0.5)); }

@media (max-width: 900px) {
  .hero__inner { grid-template-columns: 1fr; padding-block: clamp(3rem, 9vw, 4.5rem); }
  .hero__art { order: -1; max-width: 30rem; }
}

/* ---------- Marquee / logos band ----------------------------------------- */
.trust {
  background: var(--surface);
  border-block: 1px solid var(--border);
}
.trust__inner { display: flex; align-items: center; gap: var(--sp-5); flex-wrap: wrap; justify-content: center; padding-block: var(--sp-5); }
.trust__label { font-family: var(--font-mono); font-size: var(--step--1); color: var(--text-faint); text-transform: uppercase; letter-spacing: 0.12em; }
.trust__items { display: flex; flex-wrap: wrap; gap: clamp(0.8rem, 3vw, 2.2rem); align-items: center; justify-content: center; }
.trust__items span { font-weight: 600; color: var(--text-muted); font-size: var(--step--1); }

/* ---------- Cards & grids ------------------------------------------------- */
.grid { display: grid; gap: var(--sp-5); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 940px) { .grid--3, .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 620px) { .grid--3, .grid--4, .grid--2 { grid-template-columns: 1fr; } }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--sp-5);
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  height: 100%;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--border-strong); }
.card__icon {
  width: 3rem; height: 3rem;
  display: grid; place-items: center;
  border-radius: 12px;
  background: var(--accent-1-soft);
  color: var(--accent-1-ink);
  margin-bottom: var(--sp-4);
}
.card__icon--gold { background: var(--accent-2-soft); color: var(--accent-2-ink); }
.card__icon svg { width: 1.5rem; height: 1.5rem; }
.card h3 { font-size: var(--step-1); }
.card p { margin-top: var(--sp-2); color: var(--text-muted); font-size: var(--step-0); }

/* Numbered step cards */
.step { position: relative; padding-left: 3.4rem; }
.step__n {
  position: absolute; left: 0; top: 0;
  width: 2.5rem; height: 2.5rem;
  display: grid; place-items: center;
  border-radius: 50%;
  font-family: var(--font-mono);
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-1-ink));
}
.step h3 { font-size: var(--step-1); }
.step p { margin-top: var(--sp-2); color: var(--text-muted); }

/* ---------- Stat blocks --------------------------------------------------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--sp-4); }
@media (max-width: 820px) { .stats { grid-template-columns: repeat(2, 1fr); } }
.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--sp-5);
}
.stat__value { font-family: var(--font-mono); font-size: var(--step-3); font-weight: 700; letter-spacing: -0.02em; color: var(--text); }
.stat__value .u { color: var(--accent-2-ink); }
.stat__label { margin-top: var(--sp-2); color: var(--text-muted); font-size: var(--step--1); }
.stat__src { margin-top: var(--sp-2); font-size: 0.72rem; color: var(--text-faint); font-family: var(--font-mono); }

/* ---------- Feature split ------------------------------------------------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4.5rem); align-items: center; }
.split--reverse .split__media { order: 2; }
@media (max-width: 880px) { .split { grid-template-columns: 1fr; } .split--reverse .split__media { order: 0; } }
.split__media {
  background: linear-gradient(160deg, var(--surface-2), var(--surface));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 4vw, 2.6rem);
  box-shadow: var(--shadow-md);
}
.split__media svg { width: 100%; height: auto; }
.checklist { list-style: none; padding: 0; margin-top: var(--sp-5); display: grid; gap: var(--sp-3); }
.checklist li { display: flex; gap: 0.7rem; align-items: flex-start; color: var(--text-muted); }
.checklist li b { color: var(--text); font-weight: 650; }
.checklist svg { flex: none; width: 1.35rem; height: 1.35rem; color: var(--accent-1-ink); margin-top: 0.15rem; }

/* ---------- Instruments table -------------------------------------------- */
.instruments { display: grid; gap: var(--sp-4); }
.instrument {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--sp-4);
  align-items: start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent-1);
  border-radius: var(--radius);
  padding: var(--sp-5);
}
.instrument:nth-child(even) { border-left-color: var(--accent-2); }
.instrument__tag { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-faint); }
.instrument h3 { font-size: var(--step-1); margin-top: 0.15rem; }
.instrument p { margin-top: var(--sp-2); color: var(--text-muted); }
.instrument__mark { width: 2.7rem; height: 2.7rem; color: var(--accent-1-ink); }
.instrument:nth-child(even) .instrument__mark { color: var(--accent-2-ink); }

/* ---------- Blog cards ---------------------------------------------------- */
.post-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  height: 100%;
}
.post-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--border-strong); }
.post-card__cover { aspect-ratio: 16 / 9; background: var(--ink-hero); position: relative; overflow: hidden; }
.post-card__cover svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.post-card__body { padding: var(--sp-5); display: flex; flex-direction: column; gap: var(--sp-2); flex: 1; }
.post-card__meta { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-faint); display: flex; gap: 0.6rem; flex-wrap: wrap; }
.post-card__body h3 { font-size: var(--step-1); }
.post-card__body h3 a { color: var(--text); text-decoration: none; }
.post-card__body h3 a:hover { color: var(--accent-1-ink); }
.post-card__body p { color: var(--text-muted); font-size: var(--step-0); flex: 1; }
.post-card__more { font-weight: 600; color: var(--accent-1-ink); font-size: var(--step--1); display: inline-flex; gap: 0.35rem; align-items: center; }

.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-1-ink);
  background: var(--accent-1-soft);
  border-radius: 999px;
  padding: 0.25rem 0.6rem;
}
.tag--gold { color: var(--accent-2-ink); background: var(--accent-2-soft); }

/* ---------- CTA band ------------------------------------------------------ */
.cta {
  position: relative;
  isolation: isolate;
  background: var(--ink-hero);
  color: var(--on-ink);
  border-radius: var(--radius-lg);
  padding: clamp(2.5rem, 6vw, 4.5rem);
  overflow: hidden;
  text-align: center;
}
.cta::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background:
    radial-gradient(40% 60% at 20% 20%, rgba(47, 111, 228, 0.4), transparent 60%),
    radial-gradient(40% 60% at 80% 80%, rgba(183, 130, 44, 0.35), transparent 60%);
}
.cta h2 { color: #fff; font-size: var(--step-3); max-width: 22ch; margin-inline: auto; }
.cta p { color: var(--on-ink-muted); margin-top: var(--sp-4); max-width: 52ch; margin-inline: auto; }
.cta__actions { margin-top: var(--sp-6); display: flex; gap: var(--sp-3); justify-content: center; flex-wrap: wrap; }
.cta__note { margin-top: var(--sp-5); font-family: var(--font-mono); font-size: 0.74rem; color: var(--on-ink-muted); }

/* ---------- Contact ------------------------------------------------------- */
.form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 4vw, 2.6rem);
  box-shadow: var(--shadow-md);
  display: grid;
  gap: var(--sp-4);
}
.field { display: grid; gap: 0.4rem; }
.field label { font-weight: 600; font-size: var(--step--1); }
.field input,
.field textarea,
.field select {
  font: inherit;
  font-size: var(--step-0);
  padding: 0.75rem 0.9rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background: var(--bg);
  color: var(--text);
  width: 100%;
}
.field input:focus,
.field textarea:focus,
.field select:focus { outline: none; border-color: var(--accent-1); box-shadow: 0 0 0 3px var(--accent-1-soft); }
.field textarea { min-height: 8rem; resize: vertical; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-4); }
@media (max-width: 560px) { .form__row { grid-template-columns: 1fr; } }
.form__hint { font-size: var(--step--1); color: var(--text-faint); }
.form__note {
  font-size: 0.78rem; color: var(--text-faint);
  border-top: 1px dashed var(--border-strong); padding-top: var(--sp-3);
}
.check {
  display: flex; gap: 0.6rem; align-items: flex-start;
  font-size: var(--step--1); color: var(--text-muted); line-height: 1.5; cursor: pointer;
}
.check input {
  margin-top: 0.15rem; width: 1.05rem; height: 1.05rem; flex: none;
  accent-color: var(--accent-1); cursor: pointer;
}
.check a { color: var(--accent-1-ink); font-weight: 600; }
.form__status { font-size: var(--step--1); border-radius: var(--radius-sm); margin: 0; }
.form__status[data-state] { padding: 0.75rem 0.95rem; font-weight: 600; color: var(--text); }
.form__status[data-state="success"] {
  background: color-mix(in srgb, #22a366 18%, var(--surface));
  border: 1px solid color-mix(in srgb, #22a366 48%, transparent);
}
.form__status[data-state="error"] {
  background: color-mix(in srgb, #e5484d 16%, var(--surface));
  border: 1px solid color-mix(in srgb, #e5484d 48%, transparent);
}

/* ---------- Footer -------------------------------------------------------- */
.site-footer { background: var(--surface); border-top: 1px solid var(--border); padding-block: var(--sp-8) var(--sp-6); }
.footer__grid { display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: var(--sp-6); }
@media (max-width: 820px) { .footer__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .footer__grid { grid-template-columns: 1fr; } }
.footer__brand p { color: var(--text-muted); margin-top: var(--sp-3); font-size: var(--step--1); max-width: 34ch; }
.footer__col h4 { font-size: var(--step--1); text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-faint); font-family: var(--font-mono); font-weight: 600; }
.footer__col ul { list-style: none; padding: 0; margin-top: var(--sp-3); display: grid; gap: var(--sp-2); }
.footer__col a { color: var(--text-muted); text-decoration: none; font-size: var(--step-0); }
.footer__col a:hover { color: var(--accent-1-ink); }
.footer__bottom {
  margin-top: var(--sp-7);
  padding-top: var(--sp-5);
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-4);
  justify-content: space-between;
  align-items: center;
  color: var(--text-faint);
  font-size: var(--step--1);
}
.footer__disclaimer { max-width: 60ch; font-size: 0.78rem; color: var(--text-faint); margin-top: var(--sp-4); }

/* ---------- Article / blog post ------------------------------------------ */
.post-hero { background: var(--bg-tint); border-bottom: 1px solid var(--border); }
.post-hero__inner { padding-block: clamp(2.5rem, 6vw, 4.5rem); max-width: var(--maxw-prose); }
.breadcrumb { font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: 0.04em; color: var(--text-faint); display: flex; gap: 0.5rem; flex-wrap: wrap; }
.breadcrumb a { color: var(--text-muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--accent-1-ink); }
.post-hero h1 { font-size: var(--step-4); margin-top: var(--sp-4); }
.post-hero__meta { margin-top: var(--sp-4); display: flex; gap: var(--sp-4); flex-wrap: wrap; color: var(--text-muted); font-size: var(--step--1); align-items: center; }

.prose { max-width: var(--maxw-prose); margin-inline: auto; font-size: var(--step-0); }
.prose > * + * { margin-top: var(--sp-4); }
.prose h2 { font-size: var(--step-2); margin-top: var(--sp-7); }
.prose h3 { font-size: var(--step-1); margin-top: var(--sp-6); }
.prose p { color: var(--text); }
.prose ul, .prose ol { padding-left: 1.3rem; color: var(--text); display: grid; gap: var(--sp-2); }
.prose li { padding-left: 0.2rem; }
.prose a { color: var(--accent-1-ink); font-weight: 500; }
.prose strong { color: var(--text); }
.prose blockquote {
  border-left: 3px solid var(--accent-2);
  background: var(--accent-2-soft);
  padding: var(--sp-4) var(--sp-5);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: var(--step-1);
  color: var(--text);
}
.prose blockquote cite { display: block; margin-top: var(--sp-2); font-size: var(--step--1); color: var(--text-muted); font-style: normal; font-family: var(--font-mono); }
.prose figure { margin-block: var(--sp-6); }
.prose figure svg { width: 100%; height: auto; border-radius: var(--radius); border: 1px solid var(--border); background: var(--surface); }
.prose figcaption { margin-top: var(--sp-2); font-size: var(--step--1); color: var(--text-faint); text-align: center; }
.callout {
  background: var(--accent-1-soft);
  border: 1px solid color-mix(in srgb, var(--accent-1) 25%, transparent);
  border-radius: var(--radius);
  padding: var(--sp-5);
}
.callout strong { color: var(--accent-1-ink); }
.sources { margin-top: var(--sp-7); padding-top: var(--sp-5); border-top: 1px solid var(--border); }
.sources h2 { font-size: var(--step-1); }
.sources ol { font-size: var(--step--1); color: var(--text-muted); }
.sources a { word-break: break-word; }

.post-nav { display: flex; justify-content: space-between; gap: var(--sp-4); margin-top: var(--sp-8); flex-wrap: wrap; }
.post-nav a { text-decoration: none; color: var(--accent-1-ink); font-weight: 600; }

/* ---------- 404 ----------------------------------------------------------- */
.error-page { min-height: 70vh; display: grid; place-items: center; text-align: center; }
.error-page .code { font-family: var(--font-mono); font-size: clamp(4rem, 18vw, 9rem); font-weight: 700; line-height: 1; background: linear-gradient(120deg, var(--accent-1), var(--accent-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* ---------- Utilities ----------------------------------------------------- */
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}
.mt-0 { margin-top: 0; }
/* Reveal-on-scroll is a JS enhancement: only hide when the `js` class is set
   (added inline before paint). Without JS, content stays fully visible. */
.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.js .reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .js .reveal { opacity: 1; transform: none; transition: none; } }