:root {
  --bg: #f7f6f3;
  --surface: #ffffff;
  --surface-2: #efede8;
  --ink: #1a1a18;
  --muted: #66655f;
  --line: #e2e0da;
  --accent: #3a5bd9;
  --accent-ink: #ffffff;
  --accent-soft: #e6ebfb;
  --ok: #1d7a44;
  --danger: #b4232c;
  --warn-bg: #fff6dc;
  --term-bg: #16161a;
  --term-ink: #e9e8e4;
  --term-muted: #8a8a92;
  --term-a: #f0a86b;
  --term-b: #7fc8a9;
  --term-line: #2a2a31;
  --radius: 12px;
  --mono: ui-monospace, 'SF Mono', SFMono-Regular, 'JetBrains Mono', Menlo, Consolas, monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    --bg: #121211;
    --surface: #1a1a19;
    --surface-2: #23231f;
    --ink: #edece8;
    --muted: #9c9b94;
    --line: #2d2d29;
    --accent: #8aa2f7;
    --accent-ink: #10121a;
    --accent-soft: #1f2540;
    --ok: #6fd194;
    --danger: #f2777e;
    --warn-bg: #2e2714;
    --term-bg: #0c0c0e;
    --term-line: #24242a;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.55 var(--sans); }
a { color: var(--accent); }
img, svg { display: block; }
code, pre, kbd { font-family: var(--mono); }
code { font-size: 0.88em; background: var(--surface-2); padding: 0.1em 0.4em; border-radius: 5px; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }
.muted { color: var(--muted); }
.small { font-size: 14px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px; font: 600 15px/1 var(--sans);
  padding: 12px 18px; border-radius: 9px; border: 1px solid var(--accent);
  background: var(--accent); color: var(--accent-ink); text-decoration: none; cursor: pointer;
}
.btn:hover { filter: brightness(1.06); }
.btn.ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn.ghost:hover { background: var(--surface); filter: none; }
.btn.sm { padding: 7px 12px; font-size: 14px; }
.btn.danger { background: transparent; color: var(--danger); border-color: var(--line); }
.btn:disabled { opacity: 0.55; cursor: default; }

/* Top nav */
.nav { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.nav .wrap { display: flex; align-items: center; gap: 24px; height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--ink); text-decoration: none; letter-spacing: -0.01em; }
.brand-mark { width: 26px; height: 26px; }
.nav-links { display: flex; gap: 22px; margin-left: auto; align-items: center; }
.nav-links a { color: var(--muted); text-decoration: none; font-size: 15px; }
.nav-links a:hover { color: var(--ink); }
.nav-links a.on { color: var(--ink); font-weight: 600; }
@media (max-width: 720px) { .nav-links .hide-sm { display: none; } .nav-links { gap: 14px; } }
@media (max-width: 560px) { .nav .wrap { height: auto; padding-top: 10px; padding-bottom: 10px; flex-wrap: wrap; row-gap: 8px; } .nav-links { margin-left: 0; width: 100%; flex-wrap: wrap; } }

/* Landing */
.hero { padding-top: 72px; padding-bottom: 40px; display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: center; }
@media (max-width: 920px) { .hero { grid-template-columns: 1fr; padding-top: 48px; } .hero > * { min-width: 0; } }
.eyebrow { display: inline-flex; gap: 8px; align-items: center; font-size: 13px; color: var(--muted); border: 1px solid var(--line); border-radius: 99px; padding: 5px 12px; background: var(--surface); }
.eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--ok); }
.hero h1 { font-size: clamp(36px, 5.4vw, 58px); line-height: 1.04; letter-spacing: -0.03em; margin: 18px 0 18px; }
.hero p.lede { font-size: 19px; color: var(--muted); max-width: 34em; margin: 0 0 28px; }
.hero .ctas { display: flex; gap: 12px; flex-wrap: wrap; }

.demo { display: grid; gap: 14px; }
.term { background: var(--term-bg); color: var(--term-ink); border-radius: var(--radius); border: 1px solid var(--term-line); overflow: hidden; box-shadow: 0 18px 50px -24px rgb(0 0 0 / 0.45); }
.term-head { display: flex; align-items: center; gap: 8px; padding: 10px 14px; border-bottom: 1px solid var(--term-line); font: 12px var(--mono); color: var(--term-muted); }
.term-head i { width: 10px; height: 10px; border-radius: 50%; background: #3a3a42; display: inline-block; }
.term-head span { margin-left: 6px; }
.term-body { padding: 14px 16px 16px; font: 13px/1.6 var(--mono); min-height: 128px; }
.term-body p { margin: 0 0 8px; opacity: 0; transform: translateY(4px); animation: show 0.4s ease forwards; }
.term-body .who-a { color: var(--term-a); }
.term-body .who-b { color: var(--term-b); }
.term-body .dim { color: var(--term-muted); }
.term-body .tool { color: var(--term-muted); border-left: 2px solid var(--term-line); padding-left: 10px; }
@keyframes show { to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { .term-body p { animation: none; opacity: 1; transform: none; } }

.section { padding: 72px 0; border-top: 1px solid var(--line); }
.section h2 { font-size: clamp(26px, 3.4vw, 36px); letter-spacing: -0.02em; line-height: 1.15; margin: 0 0 12px; }
.section .intro { color: var(--muted); font-size: 18px; max-width: 40em; margin: 0 0 36px; }
.kicker { font: 600 12px var(--mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent); margin-bottom: 12px; }

.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; counter-reset: step; }
@media (max-width: 920px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }
.step { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.step::before { counter-increment: step; content: counter(step); display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; background: var(--accent-soft); color: var(--accent); font: 700 14px var(--mono); margin-bottom: 12px; }
.step h3 { margin: 0 0 6px; font-size: 17px; }
.step p { margin: 0; color: var(--muted); font-size: 15px; }

.code { position: relative; background: var(--term-bg); color: var(--term-ink); border-radius: 10px; padding: 16px 18px; font: 13px/1.6 var(--mono); overflow-x: auto; white-space: pre; margin: 0; border: 1px solid var(--term-line); }
.code .c { color: var(--term-muted); }
.copy-wrap { position: relative; }
.copy-wrap .code { padding-right: 76px; }
.copy-wrap .copy { position: absolute; top: 10px; right: 10px; font: 12px var(--sans); padding: 4px 10px; border-radius: 6px; border: 1px solid var(--term-line); background: #26262c; color: var(--term-ink); cursor: pointer; }
.copy-wrap .copy { transition: background 0.15s, border-color 0.15s, color 0.15s, transform 0.1s; }
.copy-wrap .copy:hover { background: #303038; }
.copy-wrap .copy:active { transform: scale(0.95); }
.copy-wrap .copy.copied { background: var(--ok); border-color: var(--ok); color: #fff; }
.copy-tip {
  position: absolute; right: 8px; top: -32px; z-index: 5; pointer-events: none; white-space: nowrap;
  font: 600 12px var(--sans); padding: 5px 9px; border-radius: 6px; background: var(--ink); color: var(--bg);
  box-shadow: 0 6px 16px -6px rgb(0 0 0 / 0.35); animation: copy-tip 1.8s ease forwards;
}
.copy-tip.error { background: var(--danger); color: #fff; }
.copy-tip::after { content: ''; position: absolute; bottom: -5px; right: 22px; border: 5px solid transparent; border-bottom: 0; border-top-color: var(--ink); }
.copy-tip.error::after { border-top-color: var(--danger); }
@keyframes copy-tip {
  0% { opacity: 0; transform: translateY(4px) scale(0.96); }
  10% { opacity: 1; transform: none; }
  80% { opacity: 1; transform: none; }
  100% { opacity: 0; transform: translateY(-3px); }
}
@media (prefers-reduced-motion: reduce) {
  .copy-tip { animation: copy-tip-fade 1.8s step-end forwards; }
  @keyframes copy-tip-fade { to { opacity: 0; } }
}

.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 860px) { .grid2, .grid3 { grid-template-columns: 1fr; } }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.card h3 { margin: 0 0 8px; font-size: 17px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.card .prompt { font: 14px/1.5 var(--mono); color: var(--ink); background: var(--surface-2); border-radius: 8px; padding: 10px 12px; margin-top: 14px; }

.list { list-style: none; padding: 0; margin: 0; }
.list li { padding: 10px 0 10px 30px; position: relative; border-bottom: 1px solid var(--line); }
.list li:last-child { border-bottom: 0; }
.list li::before { position: absolute; left: 0; top: 10px; font: 700 14px var(--mono); }
.list.yes li::before { content: '✓'; color: var(--ok); }
.list.no li::before { content: '—'; color: var(--muted); }

.price { display: flex; flex-direction: column; }
.price .amt { font-size: 40px; font-weight: 700; letter-spacing: -0.02em; margin: 6px 0 2px; }
.price .amt span { font-size: 16px; color: var(--muted); font-weight: 500; }
.price ul { list-style: none; padding: 0; margin: 16px 0 22px; color: var(--muted); font-size: 15px; flex: 1; }
.price li { padding: 5px 0; }
.price.featured { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.badge { display: inline-block; font: 600 11px var(--mono); letter-spacing: 0.05em; text-transform: uppercase; padding: 3px 8px; border-radius: 99px; background: var(--accent-soft); color: var(--accent); }
.badge.plain { background: var(--surface-2); color: var(--muted); }

.faq details { border-bottom: 1px solid var(--line); padding: 16px 0; }
.faq summary { cursor: pointer; font-weight: 600; font-size: 17px; }
.faq details p { color: var(--muted); margin: 10px 0 0; max-width: 46em; }

.cta-band { text-align: center; padding: 80px 0; border-top: 1px solid var(--line); }
.cta-band h2 { font-size: clamp(28px, 4vw, 42px); letter-spacing: -0.02em; margin: 0 0 14px; }
footer.foot { border-top: 1px solid var(--line); padding: 28px 0 40px; color: var(--muted); font-size: 14px; }
footer.foot .wrap { display: flex; gap: 20px; flex-wrap: wrap; justify-content: space-between; }

/* Dashboard */
.app-main { max-width: 1000px; margin: 0 auto; padding: 32px 20px 80px; }
.app-main h1 { font-size: 26px; letter-spacing: -0.015em; margin: 0 0 6px; }
.app-main h2 { font-size: 17px; margin: 32px 0 12px; }
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; margin: 14px 0; }
table { width: 100%; border-collapse: collapse; font-size: 15px; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font: 600 12px var(--sans); text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); }
tr.dim td { color: var(--muted); }
.table-wrap { overflow-x: auto; }
input, select, textarea { font: inherit; font-size: 15px; padding: 9px 11px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--ink); }
input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
form.row { display: flex; flex-wrap: wrap; gap: 10px; align-items: end; }
label.field { display: flex; flex-direction: column; gap: 5px; font-size: 13px; color: var(--muted); }
.flash { padding: 12px 14px; border-radius: 9px; border: 1px solid var(--line); background: var(--warn-bg); margin: 0 0 16px; }
.flash.error { color: var(--danger); }
.checklist { list-style: none; padding: 0; margin: 0; }
.checklist li { display: flex; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.checklist li:last-child { border-bottom: 0; }
.checklist .tick { flex: none; width: 22px; height: 22px; border-radius: 50%; border: 2px solid var(--line); margin-top: 1px; display: grid; place-items: center; font-size: 12px; color: transparent; }
.checklist li.done .tick { background: var(--ok); border-color: var(--ok); color: #fff; }
.tabs { display: flex; gap: 6px; flex-wrap: wrap; margin: 6px 0 12px; }
.tabs button { font: 14px var(--sans); padding: 6px 12px; border-radius: 99px; border: 1px solid var(--line); background: transparent; color: var(--muted); cursor: pointer; }
.tabs button.on { color: var(--ink); border-color: var(--ink); }
.msg { padding: 14px 0; border-bottom: 1px solid var(--line); }
.msg .meta { font-size: 13px; color: var(--muted); margin-bottom: 6px; display: flex; gap: 8px; flex-wrap: wrap; }
.msg .author { font-weight: 700; color: var(--ink); }
.msg pre { margin: 0; white-space: pre-wrap; word-break: break-word; font: 14px/1.55 var(--mono); }
.auth-card { max-width: 420px; margin: 64px auto; }
.auth-card .btn { width: 100%; justify-content: center; }
.divider { display: flex; align-items: center; gap: 12px; color: var(--muted); font-size: 13px; margin: 18px 0; }
.divider::before, .divider::after { content: ''; flex: 1; height: 1px; background: var(--line); }
.empty { text-align: center; padding: 40px 20px; color: var(--muted); }