:root {
  --ink: #111111;
  --text: #2a2a2e;
  --muted: #6b6b70;
  --line: #e6e6e9;
  --soft: #f4f4f6;
  --orange: #ff5a1f;
  --white: #ffffff;
  --display: 'Inter Display', 'Inter Tight', 'Inter', system-ui, sans-serif;
  --sans: 'Inter', system-ui, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--white); color: var(--text); font-family: var(--sans); font-size: 17px; line-height: 1.55; }
a { color: var(--ink); }
img { max-width: 100%; display: block; }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 760px; }

/* Wordmark */
.wm { font-family: var(--display); font-weight: 800; letter-spacing: -0.045em; color: var(--ink); line-height: 1; text-decoration: none; display: inline-flex; align-items: baseline; }
.wm i { display: inline-block; width: .21em; height: .21em; border-radius: 50%; background: var(--orange); margin-left: .03em; }

/* Header */
.top { position: sticky; top: 0; z-index: 10; background: rgba(255,255,255,.88); backdrop-filter: saturate(1.4) blur(12px); -webkit-backdrop-filter: saturate(1.4) blur(12px); border-bottom: 1px solid transparent; transition: border-color .2s; }
.top.scrolled { border-bottom-color: var(--line); }
.top .wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.top .wm { font-size: 30px; }
.nav { display: flex; gap: 28px; align-items: center; }
.nav a { font-family: var(--mono); font-size: 12px; letter-spacing: .04em; text-transform: uppercase; color: var(--muted); text-decoration: none; }
.nav a:hover { color: var(--ink); }
.btn { display: inline-flex; align-items: center; gap: 8px; font-family: var(--mono); font-size: 12px; font-weight: 500; letter-spacing: .04em; text-transform: uppercase; text-decoration: none; padding: 11px 16px; border-radius: 10px; border: 1px solid var(--ink); color: var(--ink) !important; background: transparent; cursor: pointer; transition: background .15s, color .15s; }
.btn:hover { background: var(--ink); color: var(--white) !important; }
.btn.solid { background: var(--ink); color: var(--white) !important; }
.btn.solid:hover { background: #2a2a2e; }

/* Labels */
.eyebrow { font-family: var(--mono); font-size: 12px; font-weight: 500; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); margin: 0 0 18px; }

/* Hero */
.hero { padding: 96px 0 88px; }
.hero h1 { font-family: var(--display); font-weight: 800; font-size: clamp(44px, 7.4vw, 92px); line-height: .98; letter-spacing: -0.04em; color: var(--ink); margin: 0 0 28px; max-width: 900px; }
.hero h1 i { font-style: normal; color: var(--orange); }
.hero p.lead { font-size: 21px; line-height: 1.5; color: var(--text); max-width: 640px; margin: 0 0 36px; }
.stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--line); margin-top: 72px; }
.stat { padding: 24px 24px 0 0; }
.stat b { display: block; font-family: var(--display); font-weight: 700; font-size: 40px; letter-spacing: -0.03em; color: var(--ink); line-height: 1.1; }
.stat span { font-family: var(--mono); font-size: 12px; letter-spacing: .04em; text-transform: uppercase; color: var(--muted); }

/* Sections */
section { padding: 88px 0; border-top: 1px solid var(--line); }
h2 { font-family: var(--display); font-weight: 700; font-size: clamp(32px, 4.4vw, 48px); letter-spacing: -0.03em; line-height: 1.05; color: var(--ink); margin: 0 0 20px; }
h3 { font-family: var(--display); font-weight: 600; font-size: 21px; letter-spacing: -0.01em; color: var(--ink); margin: 0 0 8px; }
.sub { font-size: 19px; color: var(--text); max-width: 680px; margin: 0 0 48px; }

.formats { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.card { border: 1px solid var(--line); border-radius: 18px; padding: 32px; background: var(--white); }
.card.dark { background: var(--ink); border-color: var(--ink); color: #d7d7db; }
.card.dark h3 { color: var(--white); }
.card .tag { font-family: var(--mono); font-size: 11px; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); margin-bottom: 18px; }
.card.dark .tag { color: #9a9aa0; }
.card .tag em { font-style: normal; color: var(--orange); }

.principles { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 56px; counter-reset: p; }
.principle { padding: 26px 0; border-bottom: 1px solid var(--line); counter-increment: p; display: grid; grid-template-columns: 44px 1fr; }
.principle::before { content: counter(p, decimal-leading-zero); font-family: var(--mono); font-size: 13px; color: var(--muted); padding-top: 4px; }
.principle p { margin: 0; font-size: 16px; color: var(--text); }

.apps { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.app { border: 1px solid var(--line); border-radius: 18px; padding: 24px; display: flex; flex-direction: column; }
.app-head { display: flex; align-items: center; gap: 14px; margin-bottom: 10px; }
.app-head img { width: 52px; height: 52px; border-radius: 12px; }
.app-head h3 { margin: 0; }
.cat { font-family: var(--mono); font-size: 11px; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.app p { margin: 0 0 20px; font-size: 15.5px; }
.app .shots { margin-top: auto; border-radius: 12px; background: var(--soft); }

.join { background: var(--ink); color: #d7d7db; border-top: none; }
.join h2 { color: var(--white); }
.join .sub { color: #c4c4ca; }
.join .btn { border-color: var(--white); color: var(--white) !important; }
.join .btn:hover { background: var(--white); color: var(--ink) !important; }

footer { padding: 36px 0; }
footer .wrap { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
footer .wm { font-size: 24px; }
footer small { font-family: var(--mono); font-size: 11px; letter-spacing: .05em; text-transform: uppercase; color: var(--muted); }

/* Login */
.login-page { min-height: 100vh; display: grid; place-items: center; background: var(--soft); padding: 24px; }
.login-box { width: 100%; max-width: 400px; background: var(--white); border: 1px solid var(--line); border-radius: 20px; padding: 40px 32px 32px; }
.login-box .wm { font-size: 40px; margin-bottom: 28px; }
.login-box h1 { font-family: var(--display); font-weight: 700; font-size: 26px; letter-spacing: -0.02em; color: var(--ink); margin: 0 0 6px; }
.login-box p { margin: 0 0 24px; color: var(--muted); font-size: 15px; }
label { display: block; font-family: var(--mono); font-size: 11px; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); margin: 0 0 6px; }
input[type=text], input[type=password] { width: 100%; font: inherit; font-size: 16px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px; margin: 0 0 16px; background: var(--white); color: var(--ink); }
input:focus { outline: none; border-color: var(--ink); }
.login-box .btn { width: 100%; justify-content: center; padding: 14px; margin-top: 4px; }
.error { display: none; background: #fff1ec; color: #b33a0e; border-radius: 10px; padding: 10px 12px; font-size: 14px; margin: 0 0 16px; }
.error.show { display: block; }
.back { display: inline-block; margin-top: 20px; font-family: var(--mono); font-size: 11px; letter-spacing: .05em; text-transform: uppercase; color: var(--muted); text-decoration: none; }

/* Docs */
.docs-hero { padding: 64px 0 32px; }
.docs-hero h1 { font-family: var(--display); font-weight: 800; font-size: clamp(36px, 5vw, 56px); letter-spacing: -0.035em; color: var(--ink); margin: 0 0 12px; line-height: 1; }
.doc-list { border-top: 1px solid var(--line); margin-bottom: 80px; }
.doc-row { display: grid; grid-template-columns: 56px 1fr auto; gap: 16px; align-items: center; padding: 22px 0; border-bottom: 1px solid var(--line); text-decoration: none; color: inherit; }
.doc-row .n { font-family: var(--mono); font-size: 13px; color: var(--muted); }
.doc-row h3 { margin: 0 0 2px; }
.doc-row p { margin: 0; font-size: 15px; color: var(--muted); }
.doc-row .acts { display: flex; gap: 8px; }
.doc-row .acts a { font-family: var(--mono); font-size: 11px; letter-spacing: .05em; text-transform: uppercase; color: var(--muted); text-decoration: none; border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; }
.doc-row .acts a:hover { color: var(--ink); border-color: var(--ink); }
.doc-row .acts a.primary { color: var(--ink); border-color: var(--ink); }

/* Article (doc reading) */
.article { padding: 56px 0 96px; }
.article h1 { font-family: var(--display); font-weight: 800; font-size: clamp(36px, 5vw, 54px); letter-spacing: -0.035em; line-height: 1.02; color: var(--ink); margin: 0 0 40px; }
.article h2 { font-size: 30px; margin: 56px 0 14px; }
.article h3 { font-size: 20px; margin: 32px 0 8px; }
.article p { margin: 0 0 16px; }
.article ul, .article ol { padding-left: 22px; margin: 0 0 18px; }
.article li { margin: 0 0 6px; }
.article li::marker { color: var(--muted); }
.article strong { color: var(--ink); font-weight: 600; }
.article code { font-family: var(--mono); font-size: .86em; background: var(--soft); padding: 2px 6px; border-radius: 5px; }
.article .todo { color: #d4202c; }
.article .todo strong { color: #d4202c; }
.article .app { margin: 24px 0; }
.article .app-head img { border-radius: 12px; }
.article .shots { width: 100%; }
.doc-nav { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 32px; }
.doc-nav a { font-family: var(--mono); font-size: 12px; letter-spacing: .05em; text-transform: uppercase; color: var(--muted); text-decoration: none; }
.doc-nav a:hover { color: var(--ink); }

@media (max-width: 760px) {
  body { font-size: 16px; }
  .nav a.hide-m { display: none; }
  .nav { gap: 16px; }
  .hero { padding: 64px 0 56px; }
  .hero p.lead { font-size: 18px; }
  .stats { grid-template-columns: 1fr; margin-top: 48px; }
  .stat { padding: 18px 0 0; }
  section { padding: 64px 0; }
  .formats, .principles, .apps { grid-template-columns: minmax(0, 1fr); }
  .principles { gap: 0; }
  .card { padding: 24px; }
  .doc-row { grid-template-columns: 36px 1fr; }
  .doc-row .acts { grid-column: 2; }
}