:root {
  --bg: #0b0c0f;
  --surface: #141619;
  --line: #2a2e35;
  --field: #5c6370;
  --text: #f2f2f2;
  --muted: #9a9a9a;
  --accent: #38d0f0;
  --on-accent: #06141a;
  --green: #4ade80;
  --red: #f87171;
  --amber: #fbbf24;
  --font: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "Cascadia Mono", "SF Mono", Menlo, Consolas, monospace;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 1rem/1.6 var(--font);
  font-variant-numeric: tabular-nums;
}
img, svg { max-width: 100%; }
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
.skip { position: absolute; left: 1rem; top: -4rem; background: var(--accent); color: var(--on-accent); padding: .75rem 1rem; border-radius: 6px; z-index: 10; font-weight: 600; }
.skip:focus { top: 1rem; }

.wrap { width: 100%; max-width: 68rem; margin-inline: auto; padding-inline: 1.25rem; }
.narrow { max-width: 42rem; }

/* header */
.site-header { border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .25rem 1.5rem; padding-block: .5rem; }
.brand { display: inline-flex; align-items: center; gap: .6rem; min-height: 44px; color: var(--text); text-decoration: none; font-weight: 700; font-size: 1.125rem; letter-spacing: -.01em; }
.brand svg { width: 28px; height: 28px; flex: none; }
.brand span { color: var(--muted); font-weight: 500; }
.site-nav ul { display: flex; flex-wrap: wrap; gap: 0 1.25rem; list-style: none; margin: 0; padding: 0; }
.site-nav a { display: inline-flex; align-items: center; min-height: 44px; color: var(--text); text-decoration: none; font-size: .9375rem; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--accent); }
.site-nav a[aria-current="page"] { text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 6px; }

/* type */
h1 { font-size: clamp(2rem, 8vw, 2.75rem); line-height: 1.1; letter-spacing: -.025em; margin: 0 0 1rem; font-weight: 700; }
h2 { font-size: 1.5rem; line-height: 1.25; letter-spacing: -.015em; margin: 0 0 1rem; font-weight: 700; }
h3 { font-size: 1.125rem; margin: 1.75rem 0 .5rem; font-weight: 600; }
p, ul, ol { margin: 0 0 1rem; }
.small { font-size: .875rem; }
.muted { color: var(--muted); }
.mono { font-family: var(--mono); }
.draft { border-left: 3px solid var(--amber); padding-left: .75rem; }

/* sections */
section { padding-block: 3rem; border-top: 1px solid var(--line); }
.hero { border-top: 0; padding-block: 3rem 3.5rem; position: relative; overflow: hidden; }
.hero .wrap { position: relative; }
.lead { font-size: 1.125rem; color: var(--text); max-width: 38rem; }
.page { padding-block: 2.5rem 4rem; }
.page h1 { font-size: clamp(1.75rem, 6vw, 2.25rem); }

/* ping motif */
.ping { position: absolute; right: -2.5rem; top: -1rem; width: min(26rem, 70vw); aspect-ratio: 1; pointer-events: none; opacity: .9; }
.ping circle { fill: none; stroke: var(--accent); stroke-width: 1.5; opacity: .35; }
.ping .dot { fill: var(--accent); stroke: none; opacity: 1; }
@media (prefers-reduced-motion: no-preference) {
  .ping .r2 { animation: bip 3.2s ease-out infinite; }
  .ping .r3 { animation: bip 3.2s ease-out 1.1s infinite; }
}
@keyframes bip { 0% { opacity: .6; } 100% { opacity: .08; } }
.hero-copy { position: relative; }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: .6rem 1.5rem; border-radius: 8px; font: 600 1rem/1.2 var(--font); text-decoration: none; background: var(--accent); color: var(--on-accent); border: 2px solid var(--accent); }
.btn:hover { background: #6fe0f7; border-color: #6fe0f7; }
.btn.ghost { background: transparent; color: var(--text); border-color: var(--field); }
.btn.ghost:hover { border-color: var(--accent); color: var(--accent); }
.cta-sub { margin: .75rem 0 0; color: var(--muted); font-size: .875rem; }
.cta-links { display: flex; flex-wrap: wrap; gap: 0 1.5rem; margin-top: .5rem; }
.cta-links a { display: inline-flex; align-items: center; min-height: 44px; }

/* alert card */
figure { margin: 0; }
.alert { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; box-shadow: 0 1px 0 rgba(255,255,255,.04); padding: 1.25rem; max-width: 30rem; }
.alert .l1 { display: flex; flex-wrap: wrap; gap: .25rem .6rem; align-items: baseline; font-weight: 600; margin: 0 0 .5rem; }
.status { display: inline-flex; align-items: center; gap: .4rem; color: var(--green); font-weight: 600; }
.status::before { content: ""; width: .6rem; height: .6rem; border-radius: 50%; background: currentColor; }
.alert .l2 { margin: 0 0 .5rem; }
.alert .meta { margin: 0 0 .25rem; color: var(--muted); font-size: .875rem; font-family: var(--mono); }
.alert .fake-btn { display: inline-block; margin-top: .75rem; padding: .6rem 1rem; border: 1px solid var(--field); border-radius: 8px; font-size: .9375rem; color: var(--text); }
figcaption { margin-top: .75rem; color: var(--muted); font-size: .875rem; }

/* steps, lists */
ol.steps { list-style: none; padding: 0; counter-reset: s; display: grid; gap: 1rem; max-width: 38rem; }
ol.steps li { counter-increment: s; padding-left: 3rem; position: relative; }
ol.steps li::before { content: counter(s); position: absolute; left: 0; top: -.1rem; width: 2.1rem; height: 2.1rem; border-radius: 50%; border: 1px solid var(--field); display: grid; place-items: center; font-weight: 600; font-family: var(--mono); }
ul.plain { padding-left: 1.25rem; }
ul.plain li { margin-bottom: .5rem; }
ul.diff { list-style: none; padding: 0; display: grid; gap: .75rem; max-width: 38rem; }
ul.diff li { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 1rem 1.25rem; }

/* tables */
.table-scroll { overflow-x: auto; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); }
.table-scroll:focus-visible { outline-offset: 0; }
table { border-collapse: collapse; width: 100%; min-width: 30rem; }
caption { text-align: left; padding: 1rem 1.25rem .5rem; font-weight: 600; }
th, td { text-align: left; padding: .75rem 1.25rem; border-top: 1px solid var(--line); vertical-align: top; }
thead th { color: var(--muted); font-weight: 600; font-size: .875rem; border-top: 0; }
tbody th { font-weight: 500; }
.price { font-size: 2.5rem; font-weight: 700; line-height: 1.1; letter-spacing: -.02em; }

/* faq */
details { border-top: 1px solid var(--line); }
details:last-of-type { border-bottom: 1px solid var(--line); }
summary { cursor: pointer; min-height: 44px; padding: .75rem 2rem .75rem 0; font-weight: 600; list-style: none; position: relative; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: .25rem; top: .55rem; font: 400 1.5rem/1.2 var(--mono); color: var(--accent); }
details[open] summary::after { content: "\2212"; }
details > p, details > div { padding-bottom: 1rem; max-width: 40rem; }

/* footer */
.site-footer { border-top: 1px solid var(--line); padding-block: 2.5rem 3rem; color: var(--muted); font-size: .875rem; }
.site-footer ul { display: flex; flex-wrap: wrap; gap: 0 1.25rem; list-style: none; padding: 0; margin: .5rem 0 1rem; }
.site-footer a { display: inline-flex; align-items: center; min-height: 44px; color: var(--text); }
.site-footer p { max-width: 42rem; }

code, .email { font-family: var(--mono); font-size: .9em; background: var(--surface); border: 1px solid var(--line); padding: .05rem .4rem; border-radius: 4px; word-break: break-all; }

@media (min-width: 48rem) {
  .hero { padding-block: 5rem 5.5rem; }
  .wrap { padding-inline: 2rem; }
  .ping { right: 0; width: 30rem; }
  section { padding-block: 4rem; }
}
@media (min-width: 64rem) {
  .hero-split { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: start; }
}
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.nb { white-space: nowrap; }
@media (max-width: 47.99rem) {
  table.compact { min-width: 0; }
  table.compact th, table.compact td { padding: .6rem .75rem; font-size: .9375rem; }
}
@media (max-width: 63.99rem) {
  .ping { top: auto; bottom: -5rem; right: -6rem; opacity: .4; }
}