/* ============ Q Project ============ */
/* Light is the default theme; [data-theme="dark"] overrides the tokens. */
:root {
  --bg:        #f3f6fc;
  --bg-2:      #ffffff;
  --surface:   #ffffff;
  --surface-2: #eef3fb;
  --line:      rgba(23, 53, 102, 0.12);
  --line-2:    rgba(23, 53, 102, 0.20);

  --brand:     #2f6fd0;
  --brand-hi:  #2a63bd;
  --cyan:      #1596cf;
  --indigo:    #385fca;

  --text:      #10192b;
  --muted:     #52627d;
  --faint:     #8493ab;

  --grad: linear-gradient(120deg, #5277df 0%, #438de9 52%, #35b7e4 100%);
  --on-grad: #f2f8ff;

  --glow-1: rgba(53, 183, 228, 0.14);
  --glow-2: rgba(56, 95, 202, 0.12);

  --soon-veil: linear-gradient(180deg, rgba(243, 246, 252, 0.35), rgba(243, 246, 252, 0.8));
  --live-shadow: 0 30px 80px -52px rgba(47, 111, 208, 0.5);
  --feature-shadow: 0 0 0 1.5px var(--brand), 0 30px 70px -50px rgba(47, 111, 208, 0.55);

  --code-bg:   #0c1424;
  --code-text: #d7e3f7;
  --code-line: rgba(120, 160, 220, 0.16);

  /* raw rgb for canvas */
  --dot-rgb:      47, 111, 208;
  --dot-glow-rgb: 21, 150, 207;
  --line-rgb:     47, 111, 208;
  --dot-alpha:    0.55;
  --line-alpha:   0.28;

  --maxw: 1120px;
  --r:    16px;
  --f-display: "Space Grotesk", system-ui, sans-serif;
  --f-body:    "Inter", system-ui, sans-serif;
  --f-mono:    "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
}

[data-theme="dark"] {
  --bg:        #070b16;
  --bg-2:      #0a1120;
  --surface:   #0e1526;
  --surface-2: #121b30;
  --line:      rgba(120, 160, 220, 0.14);
  --line-2:    rgba(120, 160, 220, 0.24);

  --brand:     #5b9df0;
  --brand-hi:  #6ba8f2;
  --cyan:      #35b7e4;
  --indigo:    #385fca;

  --text:      #eaf1fb;
  --muted:     #8a9bb8;
  --faint:     #5f6f8c;

  --on-grad: #041020;

  --glow-1: rgba(53, 183, 228, 0.16);
  --glow-2: rgba(56, 95, 202, 0.18);

  --soon-veil: linear-gradient(180deg, rgba(10, 17, 32, 0.55), rgba(10, 17, 32, 0.86));
  --live-shadow: 0 30px 80px -50px rgba(53, 183, 228, 0.6);
  --feature-shadow: 0 0 0 1.5px var(--brand), 0 30px 70px -48px rgba(53, 183, 228, 0.8);

  --code-bg:   #0b1120;
  --code-text: #d7e3f7;
  --code-line: rgba(120, 160, 220, 0.14);

  --dot-rgb:      120, 170, 230;
  --dot-glow-rgb: 53, 183, 228;
  --line-rgb:     83, 160, 228;
  --dot-alpha:    0.55;
  --line-alpha:   0.32;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--f-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  transition: background 0.4s ease, color 0.3s ease;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(900px 620px at 18% -8%, var(--glow-1), transparent 60%),
    radial-gradient(1000px 700px at 92% 2%, var(--glow-2), transparent 62%);
  pointer-events: none;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { font-family: var(--f-display); font-weight: 600; letter-spacing: -0.02em; margin: 0; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; margin: -1px;
  padding: 0; border: 0; clip: rect(0 0 0 0); overflow: hidden;
}
.skip {
  position: absolute; left: -999px; top: 0; z-index: 100;
  background: var(--brand); color: #fff; padding: 10px 16px; border-radius: 0 0 10px 0;
}
.skip:focus { left: 0; }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 6px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--f-display); font-weight: 500; font-size: 0.98rem;
  padding: 13px 22px; border-radius: 11px; border: 1px solid transparent;
  white-space: nowrap;
  cursor: pointer; transition: transform 0.15s ease, background 0.2s ease, border-color 0.2s ease;
}
.btn--sm { padding: 10px 16px; font-size: 0.9rem; }
.btn--block { width: 100%; }
.btn--solid {
  background: var(--grad); color: var(--on-grad); font-weight: 600;
  box-shadow: 0 8px 26px -12px rgba(53, 183, 228, 0.7);
}
.btn--solid:hover { transform: translateY(-2px); }
.btn--ghost { background: var(--surface-2); color: var(--text); border-color: var(--line-2); }
.btn--ghost:hover { border-color: var(--brand); }

/* ---------- Icon button (theme, github) ---------- */
.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 10px;
  border: 1px solid var(--line-2); background: var(--surface-2); color: var(--text);
  cursor: pointer; transition: border-color 0.2s ease, background 0.2s ease;
}
.icon-btn:hover { border-color: var(--brand); }
.icon-btn svg { width: 19px; height: 19px; }
.theme-toggle .moon { display: none; }
[data-theme="dark"] .theme-toggle .sun { display: none; }
[data-theme="dark"] .theme-toggle .moon { display: block; }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: center; justify-content: space-between;
  max-width: var(--maxw); margin: 0 auto; padding: 16px 28px;
  backdrop-filter: blur(10px);
}
.nav__brand { display: flex; align-items: center; gap: 11px; font-family: var(--f-display); font-weight: 600; font-size: 1.12rem; }
.nav__group { display: flex; align-items: center; gap: 10px; }
.nav__links { display: flex; align-items: center; gap: 26px; font-size: 0.96rem; color: var(--muted); margin-right: 8px; }
.nav__links a { transition: color 0.18s ease; }
.nav__links a:hover, .nav__links a[aria-current="page"] { color: var(--text); }
.nav__hf {
  color: var(--text); padding: 9px 15px; border: 1px solid var(--line-2);
  border-radius: 10px; font-size: 0.94rem; font-family: var(--f-display);
}
.nav__hf:hover { border-color: var(--brand); }

/* ---------- Sections ---------- */
section { max-width: var(--maxw); margin: 0 auto; padding: 92px 28px; }
.section-head { max-width: 640px; margin-bottom: 46px; }
.section-head h2 { font-size: clamp(1.9rem, 4vw, 2.6rem); }
.section-head p { color: var(--muted); margin: 14px 0 0; font-size: 1.08rem; }

/* ---------- Hero ---------- */
.hero { position: relative; padding: 56px 28px 88px; overflow: hidden; max-width: none; }
.hero__wrap { max-width: var(--maxw); margin: 0 auto; position: relative; }
.hero__field { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; }
.hero__inner { position: relative; z-index: 1; max-width: 760px; }
.hero__mark {
  width: 128px; height: 128px; margin-bottom: 28px;
  filter: drop-shadow(0 0 30px rgba(53, 183, 228, 0.4));
}
.hero__kicker { font-family: var(--f-display); font-size: 0.95rem; color: var(--cyan); margin: 0 0 18px; }
.hero__title {
  font-size: clamp(2.5rem, 6.4vw, 4.3rem); line-height: 1.03; font-weight: 700;
  letter-spacing: -0.035em; margin: 0;
}
.hero__lede {
  color: var(--muted); font-size: clamp(1.1rem, 2vw, 1.28rem); line-height: 1.55;
  max-width: 56ch; margin: 26px 0 0;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }

.hero__mark, .hero__kicker, .hero__title, .hero__lede, .hero__actions {
  opacity: 0; transform: translateY(14px); animation: rise 0.8s cubic-bezier(0.2, 0.7, 0.2, 1) forwards;
}
.hero__kicker  { animation-delay: 0.08s; }
.hero__title   { animation-delay: 0.16s; }
.hero__lede    { animation-delay: 0.28s; }
.hero__actions { animation-delay: 0.4s; }
@keyframes rise { to { opacity: 1; transform: translateY(0); } }
@media (prefers-reduced-motion: reduce) {
  .hero__mark, .hero__kicker, .hero__title, .hero__lede, .hero__actions { animation: none; opacity: 1; transform: none; }
}

/* ---------- Models ---------- */
.models__grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: 24px; }
.model {
  background: linear-gradient(180deg, var(--surface), var(--surface-2));
  border: 1px solid var(--line); border-radius: var(--r);
  padding: 30px 30px 26px; display: flex; flex-direction: column;
}
.model--live { border-color: var(--line-2); box-shadow: var(--live-shadow); }
.model--soon { background: repeating-linear-gradient(-45deg, var(--surface) 0 14px, var(--surface-2) 14px 28px); position: relative; }
.model--soon::after {
  content: ""; position: absolute; inset: 0; border-radius: var(--r);
  background: var(--soon-veil); pointer-events: none;
}
.model--soon > * { position: relative; z-index: 1; }

.model__status {
  display: inline-flex; align-items: center; gap: 9px; align-self: flex-start;
  font-size: 0.82rem; color: var(--muted); font-family: var(--f-display);
  padding: 6px 12px; border: 1px solid var(--line); border-radius: 999px; margin-bottom: 20px;
  background: var(--bg-2);
}
.dot { width: 8px; height: 8px; border-radius: 50%; background: #16b866; box-shadow: 0 0 10px rgba(22,184,102,0.7); }
.dot--pulse { background: var(--cyan); box-shadow: 0 0 10px var(--cyan); animation: pulse 1.8s ease-in-out infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }
@media (prefers-reduced-motion: reduce) { .dot--pulse { animation: none; } }

.model__name { font-size: 1.9rem; }
.model--soon .model__name {
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.model__desc { color: var(--muted); margin: 14px 0 0; }

.spec {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1px;
  background: var(--line); border: 1px solid var(--line); border-radius: 12px; overflow: hidden;
  margin: 26px 0 0;
}
.spec div { background: var(--bg-2); padding: 14px 16px; }
.spec dt { font-size: 0.78rem; color: var(--faint); margin: 0; }
.spec dd { font-family: var(--f-display); font-size: 1.15rem; margin: 4px 0 0; }

.teaser { list-style: none; padding: 0; margin: 26px 0 0; }
.teaser li {
  padding: 12px 0 12px 26px; border-top: 1px solid var(--line); color: var(--text);
  position: relative; font-family: var(--f-display); font-size: 0.98rem;
}
.teaser li:last-child { border-bottom: 1px solid var(--line); }
.teaser li::before {
  content: ""; position: absolute; left: 4px; top: 50%; transform: translateY(-50%);
  width: 7px; height: 7px; border-radius: 2px; background: var(--grad);
}
.model__foot { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-top: auto; padding-top: 26px; }
.model__meta { font-size: 0.82rem; color: var(--faint); }

/* ---------- Secret model: blurred (undecided) name ---------- */
.model__nameblock { margin: 6px 0 2px; }
.name-blur {
  display: block; width: 240px; max-width: 68%; height: 44px; border-radius: 10px;
  background: var(--grad); opacity: 0.92;
  filter: blur(10px); animation: nameblur 4.6s ease-in-out infinite;
}
@keyframes nameblur {
  0%, 100% { filter: blur(8px); }
  50%      { filter: blur(13px); }
}
@media (prefers-reduced-motion: reduce) {
  .name-blur { animation: none; filter: blur(10px); }
}

/* ---------- Quickstart ---------- */
.quickstart__grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 40px; align-items: start; }
.quickstart__copy p { color: var(--muted); }
.quickstart__copy .btn { margin-top: 8px; }
.qs-note { margin-top: 26px; padding-top: 22px; border-top: 1px solid var(--line); }
.qs-note h4 { font-size: 1rem; }
.qs-note p { margin: 8px 0 0; font-size: 0.95rem; }

.code {
  background: var(--code-bg); border: 1px solid var(--code-line); border-radius: 14px;
  overflow: hidden; box-shadow: 0 26px 60px -40px rgba(20, 40, 90, 0.5);
}
.code__bar {
  display: flex; align-items: center; gap: 10px; padding: 12px 16px;
  border-bottom: 1px solid var(--code-line);
}
.code__dots { display: flex; gap: 6px; }
.code__dots span { width: 11px; height: 11px; border-radius: 50%; background: rgba(215, 227, 247, 0.22); }
.code__file { font-family: var(--f-mono); font-size: 0.8rem; color: rgba(215, 227, 247, 0.55); }
.code__copy {
  margin-left: auto; font-family: var(--f-display); font-size: 0.8rem; cursor: pointer;
  background: transparent; border: 1px solid var(--code-line); color: rgba(215,227,247,0.8);
  padding: 5px 12px; border-radius: 8px; transition: border-color 0.2s ease, color 0.2s ease;
}
.code__copy:hover { border-color: var(--cyan); color: #fff; }
.code pre { margin: 0; padding: 20px 22px; overflow-x: auto; }
.code code {
  font-family: var(--f-mono); font-size: 0.88rem; line-height: 1.7; color: var(--code-text);
  white-space: pre;
}
.tok-kw { color: #7cc4ff; }
.tok-str { color: #8fe3b0; }
.tok-fn { color: #c3a6ff; }
.tok-com { color: #6b7fa3; font-style: italic; }
.tok-num { color: #ffb877; }

/* ---------- Work ---------- */
.work__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.pillar {
  padding: 26px 22px; border-top: 2px solid var(--brand);
  background: linear-gradient(180deg, var(--surface-2), transparent 70%);
  border-radius: 0 0 12px 12px;
}
.pillar:nth-child(2) { border-top-color: #4a86e5; }
.pillar:nth-child(3) { border-top-color: #3ba2e6; }
.pillar:nth-child(4) { border-top-color: var(--cyan); }
.pillar h3 { font-size: 1.3rem; }
.pillar p { color: var(--muted); margin: 12px 0 0; font-size: 0.98rem; }

/* ---------- Access / plans ---------- */
.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.plan {
  position: relative; background: linear-gradient(180deg, var(--surface), var(--surface-2));
  border: 1px solid var(--line); border-radius: var(--r); padding: 30px 26px;
  display: flex; flex-direction: column;
}
.plan--feature { border-color: transparent; box-shadow: var(--feature-shadow); }
.plan__badge {
  position: absolute; top: 18px; right: 18px; font-family: var(--f-display); font-size: 0.72rem;
  color: var(--cyan); border: 1px solid var(--line-2); padding: 4px 10px; border-radius: 999px;
}
.plan__head h3 { font-size: 1.4rem; }
.plan__price { font-family: var(--f-display); font-size: 1.7rem; font-weight: 600; margin: 8px 0 0; }
.plan__price span { display: block; font-size: 0.8rem; font-weight: 400; color: var(--faint); margin-top: 2px; }
.plan__sub { color: var(--muted); margin: 14px 0 0; font-size: 0.96rem; }
.plan__list { list-style: none; padding: 0; margin: 22px 0 26px; display: grid; gap: 12px; }
.plan__list li { position: relative; padding-left: 26px; color: var(--text); font-size: 0.96rem; }
.plan__list li::before {
  content: ""; position: absolute; left: 2px; top: 7px; width: 12px; height: 7px;
  border-left: 2px solid var(--cyan); border-bottom: 2px solid var(--cyan); transform: rotate(-45deg);
}
.plan .btn { margin-top: auto; }

/* ---------- Waitlist ---------- */
.waitlist {
  margin-top: 28px; padding: 30px; border: 1px solid var(--line-2); border-radius: var(--r);
  background: linear-gradient(120deg, var(--surface-2), var(--surface));
  display: flex; align-items: center; justify-content: space-between; gap: 26px; flex-wrap: wrap;
}
.waitlist__text h3 { font-size: 1.35rem; }
.waitlist__text p { color: var(--muted); margin: 8px 0 0; }
.waitlist__field { display: flex; gap: 10px; flex: 1; min-width: 300px; max-width: 460px; }
.waitlist input {
  flex: 1; background: var(--bg-2); border: 1px solid var(--line-2); border-radius: 11px;
  padding: 13px 16px; color: var(--text); font-family: var(--f-body); font-size: 1rem;
}
.waitlist input::placeholder { color: var(--faint); }
.waitlist input:focus-visible { border-color: var(--cyan); outline: none; }
.waitlist__note { flex-basis: 100%; margin: 4px 0 0; font-size: 0.9rem; color: var(--brand); min-height: 1.2em; }

/* ---------- Footer ---------- */
.footer {
  max-width: var(--maxw); margin: 0 auto; padding: 46px 28px 60px;
  border-top: 1px solid var(--line); display: grid; gap: 16px;
  grid-template-columns: auto 1fr auto; align-items: center;
}
.footer__brand { display: flex; align-items: center; gap: 10px; font-family: var(--f-display); font-weight: 600; }
.footer__tag { color: var(--muted); font-size: 0.92rem; margin: 0; justify-self: center; }
.footer__links { display: flex; gap: 22px; font-size: 0.92rem; color: var(--muted); justify-self: end; }
.footer__links a:hover { color: var(--text); }
.footer__copy { grid-column: 1 / -1; color: var(--faint); font-size: 0.85rem; margin: 8px 0 0; }

/* ================= DOCS ================= */
.docs { max-width: var(--maxw); margin: 0 auto; padding: 40px 28px 96px; display: grid; grid-template-columns: 232px 1fr; gap: 56px; align-items: start; }
.docs__side { position: sticky; top: 88px; }
.docs__side h4 { font-size: 0.78rem; letter-spacing: 0.04em; color: var(--faint); margin: 0 0 12px; font-weight: 500; }
.docs__nav { list-style: none; margin: 0 0 28px; padding: 0; display: grid; gap: 2px; }
.docs__nav a {
  display: block; padding: 7px 12px; border-radius: 8px; color: var(--muted); font-size: 0.95rem;
  border-left: 2px solid transparent; transition: color 0.18s ease, background 0.18s ease;
}
.docs__nav a:hover { color: var(--text); background: var(--surface-2); }
.docs__nav a.is-active { color: var(--brand); border-left-color: var(--brand); background: var(--surface-2); }

.docs__main { max-width: 720px; min-width: 0; }
.docs__lead { color: var(--muted); font-size: 1.15rem; margin: 10px 0 0; }
.doc-block { padding: 40px 0; border-bottom: 1px solid var(--line); scroll-margin-top: 88px; }
.doc-block:first-of-type { padding-top: 20px; }
.doc-block:last-child { border-bottom: none; }
.doc-block h1 { font-size: clamp(2.1rem, 4vw, 2.8rem); }
.doc-block h2 { font-size: 1.65rem; margin-bottom: 6px; }
.doc-block h3 { font-size: 1.15rem; margin: 26px 0 6px; }
.doc-block p { color: var(--muted); margin: 14px 0 0; }
.doc-block p code, .doc-block li code {
  font-family: var(--f-mono); font-size: 0.85em; background: var(--surface-2);
  border: 1px solid var(--line); border-radius: 6px; padding: 1px 6px; color: var(--text);
}
.doc-block ul { color: var(--muted); margin: 14px 0 0; padding-left: 20px; }
.doc-block li { margin: 6px 0; }
.doc-block .code { margin-top: 20px; }
.callout {
  margin-top: 22px; padding: 16px 18px; border-radius: 12px;
  border: 1px solid var(--line-2); background: var(--surface-2);
  display: flex; gap: 12px; align-items: flex-start; font-size: 0.95rem; color: var(--muted);
}
.callout strong { color: var(--text); font-family: var(--f-display); }
.callout::before { content: ""; flex: none; width: 4px; align-self: stretch; border-radius: 3px; background: var(--grad); }

.doc-table { width: 100%; border-collapse: collapse; margin-top: 20px; font-size: 0.94rem; }
.doc-table th, .doc-table td { text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--line); }
.doc-table th { font-family: var(--f-display); font-weight: 600; color: var(--text); font-size: 0.85rem; }
.doc-table td { color: var(--muted); }
.doc-table td:first-child { color: var(--text); font-family: var(--f-mono); font-size: 0.85rem; }

.docs__page-nav { display: flex; justify-content: space-between; gap: 16px; margin-top: 40px; }
.docs__page-nav a {
  flex: 1; padding: 16px 18px; border: 1px solid var(--line); border-radius: 12px;
  transition: border-color 0.2s ease;
}
.docs__page-nav a:hover { border-color: var(--brand); }
.docs__page-nav span { display: block; font-size: 0.78rem; color: var(--faint); }
.docs__page-nav strong { font-family: var(--f-display); color: var(--text); }
.docs__page-nav .next { text-align: right; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .docs { grid-template-columns: 1fr; gap: 28px; }
  .docs__side { position: static; border-bottom: 1px solid var(--line); padding-bottom: 20px; }
  .docs__nav { grid-auto-flow: column; grid-auto-columns: max-content; overflow-x: auto; }
  .quickstart__grid { grid-template-columns: 1fr; gap: 26px; }
}
@media (max-width: 860px) {
  .nav__links { gap: 16px; }
  .nav__links a { display: none; }
  section { padding: 66px 22px; }
  .models__grid { grid-template-columns: 1fr; }
  .work__grid { grid-template-columns: 1fr 1fr; }
  .plans { grid-template-columns: 1fr; }
  .footer { grid-template-columns: 1fr; }
  .footer__tag, .footer__links { justify-self: start; }
}
/* Stack the waitlist input + button so the button never gets squeezed */
@media (max-width: 640px) {
  .waitlist { flex-direction: column; align-items: stretch; }
  .waitlist__field { flex-direction: column; min-width: 0; max-width: none; }
  .waitlist__field .btn { width: 100%; }
}

@media (max-width: 480px) {
  body { font-size: 16px; }
  .work__grid { grid-template-columns: 1fr; }
  .spec { grid-template-columns: 1fr; }
  .nav__hf { display: none; }
}

/* ================= Blog ================= */
.blog__list { max-width: var(--maxw); margin: 0 auto; padding: 48px 28px 96px; display: grid; gap: 20px; }
.post-card {
  display: block; background: linear-gradient(180deg, var(--surface), var(--surface-2));
  border: 1px solid var(--line); border-radius: var(--r); padding: 30px 32px;
  transition: border-color 0.2s ease, transform 0.15s ease;
}
.post-card:hover { border-color: var(--brand); transform: translateY(-2px); }
.post-card__date { font-family: var(--f-display); font-size: 0.82rem; color: var(--cyan); }
.post-card h3 { font-size: 1.55rem; margin-top: 10px; }
.post-card p { color: var(--muted); margin: 12px 0 0; }
.post-card__tags { display: flex; gap: 8px; margin-top: 18px; flex-wrap: wrap; }
.post-card__tags span {
  font-family: var(--f-mono); font-size: 0.76rem; color: var(--muted);
  background: var(--surface-2); border: 1px solid var(--line); padding: 3px 10px; border-radius: 999px;
}
.blog__lead { max-width: 640px; padding: 56px 28px 0; margin: 0 auto; }
.blog__lead h1 { font-size: clamp(2rem, 4.6vw, 2.9rem); }
.blog__lead p { color: var(--muted); margin: 14px 0 0; font-size: 1.08rem; }

/* ---------- Article ---------- */
.article { max-width: 720px; margin: 0 auto; padding: 56px 28px 96px; }
.article__kicker { font-family: var(--f-display); font-size: 0.9rem; color: var(--cyan); margin: 0 0 14px; }
.article__title { font-size: clamp(2rem, 5vw, 3rem); line-height: 1.08; }
.article__lede { color: var(--muted); font-size: 1.15rem; margin: 20px 0 0; max-width: 60ch; }
.article__stats { display: flex; flex-wrap: wrap; gap: 26px; margin: 36px 0 0; padding: 24px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.article__stats div b { display: block; font-family: var(--f-display); font-size: 1.4rem; color: var(--brand); }
.article__stats div span { font-size: 0.8rem; color: var(--faint); text-transform: uppercase; letter-spacing: 0.05em; }
.article .doc-block { padding: 40px 0; border-bottom: 1px solid var(--line); }
.article .doc-block:last-child { border-bottom: none; }
.article .doc-block h2 { font-size: 1.7rem; }
.article .doc-block h3 { font-size: 1.15rem; margin: 26px 0 6px; }
.doc-table td.good { color: var(--good, #1a8f5e); font-weight: 600; }
.doc-table tr.shade td { background: var(--surface-2); }
.doc-table--plain td:first-child { font-family: var(--f-body); font-size: inherit; color: var(--text); }
.callout--warn::before { background: linear-gradient(120deg, #e2934c, #b54708); }

/* ---------- Architecture diagram ---------- */
.diagram-wrap {
  margin-top: 22px; background: linear-gradient(180deg, var(--surface), var(--surface-2));
  border: 1px solid var(--line); border-radius: var(--r); padding: 20px 8px;
}
.arch text { font-family: var(--f-display); fill: var(--text); }
.arch .lbl-sm { font-family: var(--f-mono); fill: var(--muted); font-size: 11px; }
.arch .lbl-faint { fill: var(--faint); font-size: 10.5px; font-family: var(--f-body); }
.arch rect.box { fill: var(--bg-2); stroke: var(--line-2); stroke-width: 1.2; }
.arch rect.box--accent { stroke: var(--brand); fill: var(--surface-2); }
.arch rect.box--ghost { fill: none; stroke: var(--line-2); stroke-dasharray: 4 4; }
.arch .conn { stroke: var(--line-2); stroke-width: 1.6; fill: none; }
.arch .pulse { fill: var(--cyan); filter: drop-shadow(0 0 4px var(--cyan)); }
.arch .branch-lbl { font-size: 11px; font-family: var(--f-body); fill: var(--muted); }

@media (max-width: 640px) {
  .post-card { padding: 24px 22px; }
}

/* ================= Run (in-browser demo) ================= */
.run { max-width: 720px; margin: 0 auto; padding: 56px 28px 96px; }
.run__lede { color: var(--muted); font-size: 1.08rem; margin: 14px 0 0; max-width: 62ch; }
.demo-card {
  background: linear-gradient(180deg, var(--surface), var(--surface-2));
  border: 1px solid var(--line); border-radius: var(--r); padding: 22px 24px; margin-top: 24px;
}
.demo-card + .demo-card { margin-top: 16px; }
.demo-status { font-family: var(--f-mono); font-size: 0.88rem; color: var(--muted); }
.demo-status + .demo-status { margin-top: 6px; }
.demo textarea {
  width: 100%; min-height: 70px; background: var(--bg-2); color: var(--text);
  border: 1px solid var(--line-2); border-radius: 10px; padding: 12px 14px;
  font: inherit; font-size: 0.98rem; resize: vertical;
}
.demo textarea:focus-visible { outline: none; border-color: var(--cyan); }
.demo__row { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; margin-top: 14px; }
.demo__row label { font-size: 0.86rem; color: var(--muted); display: flex; gap: 6px; align-items: center; font-family: var(--f-display); }
.demo__row input[type=number] { width: 62px; background: var(--bg-2); color: var(--text); border: 1px solid var(--line-2); border-radius: 6px; padding: 5px 7px; font: inherit; }
.demo__row input[type=range] { width: 110px; }
.demo__tps { font-family: var(--f-mono); font-size: 0.82rem; color: var(--faint); }
.demo-out {
  margin-top: 16px; background: var(--code-bg); border: 1px solid var(--code-line); border-radius: 12px;
  padding: 16px 18px; min-height: 120px; white-space: pre-wrap; font-family: var(--f-mono);
  font-size: 0.92rem; line-height: 1.6; color: var(--code-text);
}
.demo-note { color: var(--faint); font-size: 0.88rem; margin-top: 18px; }
.demo-hint { color: var(--faint); font-size: 0.85rem; margin-top: 12px; line-height: 1.5; }
.demo-hint code { font-family: var(--f-mono); font-size: 0.85em; background: var(--surface-2); border: 1px solid var(--line); border-radius: 6px; padding: 1px 6px; color: var(--muted); }