/* AppSign — "blueprint" design system. Tokens mirror DESIGN.md; change them there first. */
:root {
  --ink: #0A0F1F;
  --ink-2: #121A36;
  --ink-line: rgba(158, 193, 255, .14);
  --paper: #F4F6FB;
  --card: #FFFFFF;
  --line: #E1E5EF;
  --text: #0E1326;
  --muted: #535B73;
  --on-ink: #E9EEFF;
  --on-ink-muted: #A3AECB;
  --blue: #2A4FE0;
  --blue-hover: #1E3FC4;
  --blue-soft: #E8EDFF;
  --sky: #8FB4FF;
  --signal: #C8F25A;

  --f-display: "Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
  --f-body: "Instrument Sans", "Segoe UI", system-ui, sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;

  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 22px;
  --wrap: 1180px;
  --gutter: clamp(16px, 4vw, 36px);
  --shadow: 0 1px 2px rgba(10, 15, 31, .06), 0 12px 32px -12px rgba(10, 15, 31, .18);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0; background: var(--paper); color: var(--text);
  font: 400 17px/1.6 var(--f-body);
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
img, svg { max-width: 100%; }
a { color: var(--blue); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--blue-hover); }
h1, h2, h3, h4 { font-family: var(--f-display); font-weight: 650; letter-spacing: -.02em; line-height: 1.1; margin: 0 0 .5em; }
p { margin: 0 0 1em; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding-inline: var(--gutter); }
.mono { font-family: var(--f-mono); letter-spacing: -.01em; }
.small { font-size: 13px; }
.muted { color: var(--muted); }
.skip { position: absolute; left: -999px; top: 8px; background: #fff; padding: 8px 12px; z-index: 100; }
.skip:focus { left: 8px; }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; border-radius: 4px; }

/* ---------- eyebrow / headings ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font: 500 12px/1 var(--f-mono); text-transform: uppercase; letter-spacing: .12em; color: var(--blue);
  margin-bottom: 18px;
}
.eyebrow::before { content: ""; width: 22px; height: 1px; background: currentColor; }
.on-ink .eyebrow { color: var(--sky); }
.section { padding-block: clamp(64px, 9vw, 120px); }
.section__head { max-width: 720px; margin-bottom: clamp(36px, 5vw, 56px); }
.section__head h2 { font-size: clamp(32px, 4.4vw, 52px); }
.section__head p { font-size: 19px; color: var(--muted); }
.on-ink .section__head p { color: var(--on-ink-muted); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: 600 16px/1 var(--f-body); padding: 15px 22px; border-radius: 999px;
  border: 1px solid transparent; text-decoration: none; cursor: pointer;
  transition: transform .15s ease, background-color .15s ease, border-color .15s ease;
}
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--blue); color: #fff; }
.btn--primary:hover { background: var(--blue-hover); color: #fff; }
.btn--ghost { border-color: var(--line); color: var(--text); background: var(--card); }
.btn--ghost:hover { border-color: var(--text); color: var(--text); }
.on-ink .btn--ghost { background: transparent; color: var(--on-ink); border-color: rgba(233, 238, 255, .28); }
.on-ink .btn--ghost:hover { border-color: var(--on-ink); }
.btn--signal { background: var(--signal); color: var(--ink); }
.btn--signal:hover { background: #d8ff75; color: var(--ink); }
.btn--sm { padding: 10px 16px; font-size: 15px; }
.btn .arr { transition: transform .15s ease; }
.btn:hover .arr { transform: translateX(3px); }

/* ---------- ribbon ---------- */
.ribbon { background: #121A36; color: var(--on-ink-muted); border-bottom: 1px solid var(--ink-line); font-size: 14px; }
.ribbon__inner { display: flex; gap: 12px; align-items: center; justify-content: center; padding-block: 9px; flex-wrap: wrap; text-align: center; }
.ribbon__tag { font: 500 11px/1 var(--f-mono); text-transform: uppercase; letter-spacing: .1em; background: var(--signal); color: var(--ink); padding: 5px 8px; border-radius: 5px; }
.ribbon a { color: var(--signal); font-weight: 600; }
.ribbon a:hover { color: #d8ff75; }

/* ---------- header ---------- */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(10, 15, 31, .97); backdrop-filter: saturate(160%) blur(14px); -webkit-backdrop-filter: saturate(160%) blur(14px); border-bottom: 1px solid var(--ink-line); }
.site-header__inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; color: #fff; }
.brand:hover { color: #fff; }
.brand__word { font: 650 21px/1 var(--f-display); letter-spacing: -.03em; }
.site-nav { display: flex; align-items: center; gap: 4px; }
.site-nav a:not(.btn) { color: var(--on-ink-muted); text-decoration: none; font-size: 15px; font-weight: 500; padding: 8px 12px; border-radius: 8px; }
.site-nav a:not(.btn):hover, .site-nav a[aria-current="page"] { color: #fff; }
.site-nav a[aria-current="page"] { background: rgba(255, 255, 255, .07); }
.site-nav__sep { width: 1px; height: 22px; background: var(--ink-line); margin-inline: 8px; }
.site-nav .site-nav__login { color: #fff !important; }
.nav-toggle, .nav-burger { display: none; }

@media (max-width: 900px) {
  .nav-burger { display: grid; place-items: center; width: 44px; height: 44px; cursor: pointer; }
  .nav-burger span, .nav-burger span::before, .nav-burger span::after { display: block; width: 20px; height: 2px; background: #fff; position: relative; border-radius: 2px; transition: transform .2s ease; }
  .nav-burger span::before, .nav-burger span::after { content: ""; position: absolute; left: 0; }
  .nav-burger span::before { top: -6px; } .nav-burger span::after { top: 6px; }
  .site-nav { position: absolute; top: 68px; left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 2px; padding: 12px var(--gutter) 20px; background: var(--ink); border-bottom: 1px solid var(--ink-line); display: none; }
  .nav-toggle:checked ~ .site-nav { display: flex; }
  .site-nav a:not(.btn) { padding: 12px; font-size: 17px; }
  .site-nav .btn { margin-top: 8px; }
  .site-nav__sep { display: none; }
}

/* ---------- ink surfaces + blueprint grid ---------- */
.on-ink { background: var(--ink); color: var(--on-ink); position: relative; isolation: isolate; overflow: hidden; }
.on-ink h1, .on-ink h2, .on-ink h3 { color: #fff; }
.blueprint::before {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background-image:
    linear-gradient(var(--ink-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--ink-line) 1px, transparent 1px),
    linear-gradient(rgba(158, 193, 255, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(158, 193, 255, .05) 1px, transparent 1px);
  background-size: 96px 96px, 96px 96px, 24px 24px, 24px 24px;
  background-position: -1px -1px;
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 60% 40%, #000 30%, transparent 85%);
          mask-image: radial-gradient(ellipse 80% 70% at 60% 40%, #000 30%, transparent 85%);
}
.blueprint::after {
  content: ""; position: absolute; z-index: -1; pointer-events: none;
  width: 900px; height: 900px; right: -260px; top: -380px;
  background: radial-gradient(circle, rgba(58, 96, 255, .42), transparent 62%);
}

/* ---------- hero ---------- */
.hero { padding-block: clamp(56px, 8vw, 104px) clamp(64px, 9vw, 120px); }
.hero__grid { display: grid; grid-template-columns: 1.08fr .92fr; gap: clamp(32px, 5vw, 72px); align-items: center; }
.hero h1 { font-size: clamp(42px, 6.4vw, 80px); font-weight: 800; letter-spacing: -.022em; line-height: .98; margin-bottom: 24px; }
.hero h1 em { font-style: normal; color: var(--signal); }
.hero__lead { font-size: clamp(18px, 1.6vw, 21px); color: var(--on-ink-muted); max-width: 560px; margin-bottom: 34px; }
.hero__cta { display: flex; gap: 12px; flex-wrap: wrap; }
.hero__note { margin-top: 22px; font: 400 13px/1.5 var(--f-mono); color: var(--on-ink-muted); }
@media (max-width: 960px) { .hero__grid { grid-template-columns: 1fr; } }

/* blueprint "sheet" illustration */
.sheet { position: relative; border: 1px solid rgba(143, 180, 255, .35); border-radius: var(--r-lg); background: linear-gradient(180deg, rgba(18, 26, 54, .92), rgba(10, 15, 31, .92)); padding: 22px; box-shadow: 0 40px 80px -30px rgba(0, 0, 0, .6); }
.sheet__corner { position: absolute; width: 14px; height: 14px; border-color: var(--sky); border-style: solid; opacity: .8; }
.sheet__corner--tl { top: -7px; left: -7px; border-width: 1px 0 0 1px; }
.sheet__corner--br { bottom: -7px; right: -7px; border-width: 0 1px 1px 0; }
.sheet__head { display: flex; justify-content: space-between; font: 500 11px/1 var(--f-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--on-ink-muted); padding-bottom: 16px; border-bottom: 1px dashed rgba(143, 180, 255, .25); margin-bottom: 18px; }
.step-row { display: grid; grid-template-columns: 38px 1fr auto; gap: 14px; align-items: center; padding: 12px 0; }
.step-row + .step-row { border-top: 1px solid rgba(143, 180, 255, .1); }
.step-row__icon { width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center; background: rgba(143, 180, 255, .1); color: var(--sky); }
.step-row__title { font-weight: 600; color: #fff; font-size: 15px; }
.step-row__meta { font: 400 12px/1.4 var(--f-mono); color: var(--on-ink-muted); }
.pill { font: 500 11px/1 var(--f-mono); padding: 6px 9px; border-radius: 999px; white-space: nowrap; }
.pill--ok { background: rgba(200, 242, 90, .14); color: var(--signal); }
.pill--run { background: rgba(143, 180, 255, .14); color: var(--sky); }
.sheet__dim { display: flex; align-items: center; gap: 10px; margin-top: 18px; font: 400 11px/1 var(--f-mono); color: var(--on-ink-muted); }
.sheet__dim::before, .sheet__dim::after { content: ""; flex: 1; height: 1px; background: repeating-linear-gradient(90deg, rgba(143, 180, 255, .5) 0 4px, transparent 4px 8px); }
.sheet__caption { margin-top: 12px; text-align: right; font: 400 11px/1 var(--f-mono); color: rgba(163, 174, 203, .6); }

/* ---------- facts strip ---------- */
.facts { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.fact { padding: 28px 24px; border-left: 1px solid var(--line); }
.fact:first-child { border-left: 0; padding-left: 0; }
.fact__num { font: 800 clamp(34px, 4vw, 48px)/1 var(--f-display); letter-spacing: -.03em; margin-bottom: 10px; }
.fact__txt { font-size: 15px; color: var(--muted); margin: 0 0 10px; }
.fact__src { font: 400 12px/1.4 var(--f-mono); color: var(--muted); }
.fact__src a { color: inherit; }
@media (max-width: 900px) { .facts { grid-template-columns: 1fr 1fr; } .fact:nth-child(3) { border-left: 0; padding-left: 0; } .fact:nth-child(n+3) { border-top: 1px solid var(--line); } }
@media (max-width: 520px) { .facts { grid-template-columns: 1fr; } .fact { border-left: 0; padding-left: 0; } .fact + .fact { border-top: 1px solid var(--line); } }

/* ---------- steps ---------- */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; counter-reset: s; }
.steps li { counter-increment: s; position: relative; padding: 26px 22px 0 0; border-top: 2px solid var(--text); }
.steps li::before { content: "0" counter(s); display: block; font: 500 13px/1 var(--f-mono); color: var(--blue); margin-bottom: 14px; }
.steps li::after { content: ""; position: absolute; top: -6px; left: 0; width: 10px; height: 10px; border-radius: 50%; background: var(--paper); border: 2px solid var(--text); }
.steps h3 { font-size: 20px; margin-bottom: 8px; }
.steps p { font-size: 15px; color: var(--muted); margin: 0; }
@media (max-width: 900px) { .steps { grid-template-columns: 1fr; gap: 28px; } .steps li { border-top: 0; border-left: 2px solid var(--text); padding: 0 0 0 26px; } .steps li::after { top: 0; left: -6px; } }

/* ---------- cards / features ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
@media (max-width: 900px) { .grid-3, .grid-2 { grid-template-columns: 1fr; } }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 28px; }
.card h3 { font-size: 21px; }
.card p { color: var(--muted); font-size: 16px; margin: 0; }
.card__icon { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; background: var(--blue-soft); color: var(--blue); margin-bottom: 20px; }
.card--wide { grid-column: span 2; }
@media (max-width: 900px) { .card--wide { grid-column: auto; } }

/* ---------- enterprise band ---------- */
.ent { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 6vw, 88px); align-items: start; }
.ent h2 { font-size: clamp(34px, 4.6vw, 56px); }
.ent__list { list-style: none; padding: 0; margin: 0; }
.ent__list li { display: grid; grid-template-columns: 26px 1fr; gap: 12px; padding: 18px 0; border-bottom: 1px solid var(--ink-line); }
.ent__list li:first-child { border-top: 1px solid var(--ink-line); }
.ent__list svg { color: var(--signal); margin-top: 3px; }
.ent__list strong { color: #fff; display: block; font-weight: 600; }
.ent__list span { color: var(--on-ink-muted); font-size: 15px; }
@media (max-width: 900px) { .ent { grid-template-columns: 1fr; } }

/* ---------- pricing ---------- */
.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; align-items: stretch; }
@media (max-width: 900px) { .plans { grid-template-columns: 1fr; } }
.plan { background: var(--card); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 30px; display: flex; flex-direction: column; }
.plan--dark { background: var(--ink); color: var(--on-ink); border-color: var(--ink); position: relative; overflow: hidden; }
.plan--dark h3 { color: #fff; }
.plan__name { font: 500 12px/1 var(--f-mono); text-transform: uppercase; letter-spacing: .12em; color: var(--blue); margin-bottom: 10px; }
.plan--dark .plan__name { color: var(--signal); }
.plan__for { color: var(--muted); font-size: 15px; margin-bottom: 22px; }
.plan--dark .plan__for { color: var(--on-ink-muted); }
.plan__price { font: 800 52px/1 var(--f-display); letter-spacing: -.04em; margin-bottom: 4px; }
.plan__price small { font: 500 16px/1 var(--f-body); color: var(--muted); letter-spacing: 0; }
.plan__price--text { font-size: 36px; }
.plan ul { list-style: none; padding: 0; margin: 22px 0 28px; flex: 1; }
.plan li { display: flex; justify-content: space-between; gap: 12px; padding: 10px 0; border-bottom: 1px dashed var(--line); font-size: 15px; }
.plan--dark li { border-bottom-color: var(--ink-line); }
.plan li b { font-family: var(--f-mono); font-weight: 500; }
.plan .btn { width: 100%; }

.compare-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r-lg); background: var(--card); }
.compare { width: 100%; border-collapse: collapse; min-width: 640px; font-size: 15px; }
.compare th, .compare td { padding: 14px 20px; text-align: left; border-bottom: 1px solid var(--line); }
.compare thead th { font: 500 12px/1 var(--f-mono); text-transform: uppercase; letter-spacing: .1em; color: var(--muted); background: var(--paper); }
.compare td:not(:first-child), .compare th:not(:first-child) { text-align: center; }
.compare td:not(:first-child) { font-family: var(--f-mono); font-size: 14px; }
.compare tbody tr:last-child td { border-bottom: 0; }
.compare .yes { color: var(--blue); } .compare .no { color: #9aa1b5; }

/* ---------- testimonials (anonymous, horizontal scroll) ---------- */
.quotes-head { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin-bottom: clamp(28px, 4vw, 44px); }
.quotes-nav { display: flex; gap: 8px; flex: none; }
.quotes-btn { width: 48px; height: 48px; border-radius: 50%; border: 1px solid var(--line); background: var(--card); color: var(--text); font: 400 20px/1 var(--f-mono); cursor: pointer; transition: border-color .15s ease, opacity .15s ease; }
.quotes-btn:hover { border-color: var(--text); }
.quotes-btn:disabled { opacity: .35; cursor: default; border-color: var(--line); }
.quotes-track {
  display: grid; grid-auto-flow: column; grid-auto-columns: min(440px, 84vw); gap: 16px;
  overflow-x: auto; scroll-snap-type: x mandatory; scroll-behavior: smooth; overscroll-behavior-x: contain;
  padding: 4px max(var(--gutter), calc((100vw - var(--wrap)) / 2 + var(--gutter))) 20px;
  scroll-padding-inline: max(var(--gutter), calc((100vw - var(--wrap)) / 2 + var(--gutter)));
  scrollbar-width: thin; scrollbar-color: var(--line) transparent;
}
.quotes-track:focus-visible { outline-offset: -2px; }
.quote { margin: 0; padding: 30px; border-radius: var(--r-lg); background: var(--card); border: 1px solid var(--line); scroll-snap-align: start; display: flex; flex-direction: column; }
.quote__mark { font: 800 64px/.6 var(--f-display); color: var(--blue); height: 30px; }
.quote blockquote { margin: 0 0 22px; font: 500 20px/1.45 var(--f-display); letter-spacing: -.01em; flex: 1; }
.quote figcaption { font: 500 12px/1 var(--f-mono); text-transform: uppercase; letter-spacing: .1em; color: var(--muted); padding-top: 16px; border-top: 1px dashed var(--line); }
@media (max-width: 640px) { .quotes-nav { display: none; } }
@media (prefers-reduced-motion: reduce) { .quotes-track { scroll-behavior: auto; } }

/* ---------- FAQ ---------- */
.faq { max-width: 860px; }
.faq details { border-bottom: 1px solid var(--line); }
.faq details:first-of-type { border-top: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; gap: 24px; padding: 22px 0; font: 600 19px/1.35 var(--f-display); letter-spacing: -.01em; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font: 400 24px/1 var(--f-mono); color: var(--blue); transition: transform .2s ease; flex: none; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq .faq__a { padding: 0 0 22px; color: var(--muted); max-width: 720px; }
.faq .faq__a p:last-child { margin: 0; }

/* ---------- CTA band ---------- */
.cta-band { border-radius: var(--r-lg); padding: clamp(32px, 6vw, 64px); display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: center; }
.cta-band h2 { font-size: clamp(30px, 4vw, 46px); margin: 0 0 8px; }
.cta-band p { color: var(--on-ink-muted); margin: 0; }
@media (max-width: 760px) { .cta-band { grid-template-columns: 1fr; } }

/* ---------- page header (inner pages) ---------- */
.page-head { padding-block: clamp(48px, 7vw, 88px) clamp(40px, 6vw, 72px); }
.page-head h1 { font-size: clamp(38px, 5.6vw, 68px); font-weight: 800; letter-spacing: -.022em; max-width: 900px; }
.page-head p { font-size: 20px; color: var(--on-ink-muted); max-width: 680px; margin: 0; }

/* ---------- forms ---------- */
.form { display: grid; gap: 16px; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 640px) { .form__row { grid-template-columns: 1fr; } }
.field label { display: block; font: 500 12px/1 var(--f-mono); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin-bottom: 8px; }
.field input, .field textarea, .field select {
  width: 100%; font: 400 16px/1.4 var(--f-body); color: var(--text); background: var(--card);
  border: 1px solid var(--line); border-radius: var(--r-sm); padding: 13px 14px; transition: border-color .15s ease, box-shadow .15s ease;
}
.field textarea { min-height: 130px; resize: vertical; }
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px var(--blue-soft); }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.form__status { font-size: 15px; margin: 0; min-height: 1.4em; }
.form__status[data-state="ok"] { color: #19803c; }
.form__status[data-state="err"] { color: #b42318; }
.form-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--r-lg); padding: clamp(24px, 4vw, 40px); box-shadow: var(--shadow); }

/* ---------- prose (legal, blog) ---------- */
.prose { max-width: 740px; font-size: 18px; line-height: 1.72; }
.prose h2 { font-size: clamp(24px, 2.6vw, 30px); margin: 2em 0 .6em; }
.prose h3 { font-size: 21px; margin: 1.6em 0 .5em; }
.prose ul, .prose ol { padding-left: 1.3em; margin: 0 0 1.2em; }
.prose li { margin-bottom: .4em; }
.prose table { width: 100%; border-collapse: collapse; font-size: 15px; margin: 1.2em 0 1.6em; display: block; overflow-x: auto; }
.prose th, .prose td { border: 1px solid var(--line); padding: 10px 12px; text-align: left; vertical-align: top; }
.prose th { background: var(--paper); font-weight: 600; }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 2em 0; }
.prose blockquote { margin: 1.4em 0; padding: 4px 0 4px 20px; border-left: 3px solid var(--blue); color: var(--muted); }
.prose code { font: 400 .88em var(--f-mono); background: var(--blue-soft); padding: 2px 6px; border-radius: 5px; }
.prose pre { background: var(--ink); color: var(--on-ink); border-radius: var(--r-md); padding: 18px 20px; overflow-x: auto; margin: 0 0 1.4em; font-size: 14px; line-height: 1.6; }
.prose :not(pre) > code { overflow-wrap: anywhere; }
.prose pre code { background: none; padding: 0; color: inherit; font-size: inherit; white-space: pre; }
.legal { font-size: 16px; line-height: 1.7; }
.legal h2 { font-size: 20px; letter-spacing: -.01em; }
.legal-updated { font: 500 13px/1.4 var(--f-mono); color: var(--muted); }
.callout { background: var(--blue-soft); border-radius: var(--r-md); padding: 20px 22px; margin: 1.6em 0; font-size: 16px; }
.callout strong:first-child { display: block; font: 500 12px/1 var(--f-mono); text-transform: uppercase; letter-spacing: .1em; color: var(--blue); margin-bottom: 8px; }
.sources { font-size: 14px; color: var(--muted); border-top: 1px solid var(--line); margin-top: 3em; padding-top: 1.2em; }
.sources ol { padding-left: 1.2em; }
.sources a { word-break: break-word; }

/* ---------- blog ---------- */
.posts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 900px) { .posts { grid-template-columns: 1fr; } }
.post-card { display: flex; flex-direction: column; background: var(--card); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 28px; text-decoration: none; color: var(--text); transition: border-color .15s ease, transform .2s ease; }
.post-card:hover { border-color: var(--text); color: var(--text); transform: translateY(-2px); }
.post-card__tag { font: 500 12px/1 var(--f-mono); text-transform: uppercase; letter-spacing: .1em; color: var(--blue); margin-bottom: 18px; }
.post-card h3 { font-size: 23px; margin-bottom: 12px; }
.post-card p { color: var(--muted); font-size: 16px; flex: 1; }
.post-card__more { font-weight: 600; color: var(--blue); }
.post-meta { font: 400 13px/1 var(--f-mono); color: var(--on-ink-muted); margin-top: 22px; }
.article-layout { display: grid; grid-template-columns: minmax(0, 740px) 1fr; gap: 64px; }
.article-aside { position: sticky; top: 100px; align-self: start; }
.article-layout > * { min-width: 0; }
@media (max-width: 1000px) { .article-layout { grid-template-columns: minmax(0, 1fr); } .article-aside { position: static; } }

/* ---------- footer ---------- */
.site-footer { background: var(--ink); color: var(--on-ink-muted); padding-top: 64px; }
.site-footer__grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 32px; padding-bottom: 48px; }
.site-footer h2 { font: 500 12px/1 var(--f-mono); text-transform: uppercase; letter-spacing: .12em; color: #fff; margin-bottom: 16px; }
.site-footer nav a { display: block; color: var(--on-ink-muted); text-decoration: none; padding: 5px 0; font-size: 15px; }
.site-footer nav a:hover { color: #fff; }
.site-footer__brand p { max-width: 300px; font-size: 15px; margin: 14px 0 6px; }
.site-footer__base { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; border-top: 1px solid var(--ink-line); padding-block: 22px; font-size: 14px; }
@media (max-width: 760px) { .site-footer__grid { grid-template-columns: 1fr 1fr; } .site-footer__brand { grid-column: 1 / -1; } }

/* ---------- motion ---------- */
.js .reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s ease, transform .6s cubic-bezier(.2, .7, .2, 1); }
.js .reveal.is-in { opacity: 1; transform: none; }
.js .hero .reveal { transition-delay: calc(var(--i, 0) * 90ms); }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .post-card, .faq summary::after { transition: none; }
}