/* at0mic.com. Brand values are interim until the brand kit lands (mark, wordmark, palette). */
@font-face {
  font-family: Inter;
  src: url("fonts/inter.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
:root {
  --paper: #F2EDE3;
  --ink: #15161A;
  --quiet: #5C6169;
  --line: #D9C3A0;
  --yellow: #FFD60A;
  --max: 64rem;
  --gutter: 1rem;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) { --paper: #15161A; --ink: #F2EDE3; --quiet: #A8ADB5; --line: #3A3D44; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-feature-settings: "zero" 1, "cv11" 0;
  font-size: 1.0625rem;
  line-height: 1.55;
}
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
a:hover { text-decoration-color: var(--yellow); text-decoration-thickness: 2px; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }

/* header */
.top { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1.1rem var(--gutter); }
.brand { display: inline-flex; align-items: center; gap: 0.55rem; text-decoration: none; }
.brand .mark { width: 1.5rem; height: 1.5rem; color: var(--ink); }
.wordmark { font-weight: 800; font-size: 1.35rem; letter-spacing: -0.02em; line-height: 1; font-feature-settings: "zero" 1; }
.nav { display: flex; gap: 1.1rem; font-size: 0.95rem; }
.nav a { text-decoration: none; color: var(--quiet); white-space: nowrap; }
.nav a[aria-current] { color: var(--ink); border-bottom: 2px solid var(--yellow); }
.nav a:hover { color: var(--ink); }
@media (max-width: 480px) { .nav { gap: 0.8rem; font-size: 0.9rem; } .nav .hide-s { display: none; } }

/* hero */
.hero { padding: 3.5rem var(--gutter) 3rem; border-bottom: 1px solid var(--line); }
.hero h1 { font-size: clamp(2.2rem, 7vw, 4.2rem); font-weight: 800; letter-spacing: -0.03em; line-height: 1.02; margin: 0 0 1.2rem; max-width: 14ch; }
.hero h1 .dot { color: var(--yellow); }
.hero p { font-size: 1.2rem; max-width: 36ch; margin: 0 0 1.6rem; color: var(--quiet); }
.hero p b { color: var(--ink); font-weight: 600; }
.btn { font: inherit; border: 0; cursor: pointer; display: inline-block; padding: 0.8rem 1.2rem; border-radius: 0.5rem; background: var(--ink); color: var(--paper); text-decoration: none; font-weight: 600; }
.btn:hover { background: var(--yellow); color: #15161A; text-decoration: none; }
.btn.ghost { background: transparent; color: var(--ink); border: 1.5px solid var(--ink); margin-left: 0.5rem; }
.btn.ghost:hover { background: var(--yellow); border-color: var(--yellow); }

/* sections */
.sec { padding: 3rem var(--gutter); border-bottom: 1px solid var(--line); }
.sec h2 { font-size: 0.85rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--quiet); margin: 0 0 1.4rem; font-weight: 600; }
.sec h3 { font-size: 1.5rem; letter-spacing: -0.02em; margin: 0 0 0.6rem; font-weight: 700; }
.sec p { max-width: 60ch; margin: 0 0 1rem; }
.lead { font-size: 1.35rem; max-width: 30ch; letter-spacing: -0.015em; line-height: 1.3; font-weight: 600; }
.grid { display: grid; gap: 1.2rem; grid-template-columns: 1fr; }
@media (min-width: 680px) { .grid { grid-template-columns: 1fr 1fr; } .grid.three { grid-template-columns: 1fr 1fr 1fr; } }
.card { border: 1px solid var(--line); border-radius: 0.75rem; padding: 1.4rem; background: color-mix(in srgb, var(--paper) 92%, white); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .card { background: color-mix(in srgb, var(--paper) 92%, white 4%); } }
.card h3 { margin-top: 0; }
.card .tag { font-size: 0.8rem; color: var(--quiet); display: block; margin-bottom: 0.5rem; }
.card p { margin-bottom: 0.8rem; }
.card a.more { font-weight: 600; }
.steps { counter-reset: s; list-style: none; padding: 0; margin: 0; display: grid; gap: 1rem; }
@media (min-width: 680px) { .steps { grid-template-columns: repeat(4, 1fr); } }
.steps li { counter-increment: s; padding-top: 0.6rem; border-top: 2px solid var(--ink); }
.steps li::before { content: counter(s, decimal-leading-zero); display: block; font-weight: 800; font-size: 0.9rem; color: var(--quiet); margin-bottom: 0.3rem; }
.steps b { display: block; margin-bottom: 0.2rem; }
.steps p { font-size: 0.95rem; color: var(--quiet); margin: 0; }
.cols { display: grid; gap: 1.5rem; }
@media (min-width: 680px) { .cols { grid-template-columns: 1fr 1fr; } }
.cols ul { padding-left: 1.1rem; margin: 0; }
.cols li { margin-bottom: 0.35rem; }
.price { display: inline-block; background: var(--yellow); color: #15161A; padding: 0.15rem 0.5rem; border-radius: 0.3rem; font-weight: 700; }
.note { font-size: 0.9rem; color: var(--quiet); }

/* form */
form { display: grid; gap: 0.9rem; max-width: 34rem; }
label { display: grid; gap: 0.3rem; font-weight: 600; font-size: 0.95rem; }
input, textarea { font: inherit; padding: 0.7rem 0.8rem; border: 1.5px solid var(--line); border-radius: 0.5rem; background: transparent; color: var(--ink); width: 100%; }
input:focus, textarea:focus { outline: 2px solid var(--yellow); border-color: var(--ink); }
textarea { min-height: 7rem; resize: vertical; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.status { font-size: 0.95rem; margin: 0; min-height: 1.5em; }
.status.ok { border-left: 3px solid var(--yellow); padding-left: 0.7rem; color: var(--ink); }
.status.err { color: #B3261E; }
button[disabled] { opacity: 0.6; cursor: wait; }
.prose h2 { text-transform: none; letter-spacing: -0.01em; font-size: 1.2rem; color: var(--ink); margin: 2rem 0 0.5rem; }
.prose p, .prose li { max-width: 62ch; }

/* footer */
footer { padding: 2.2rem var(--gutter) 3rem; font-size: 0.9rem; color: var(--quiet); }
footer .row { display: flex; flex-wrap: wrap; gap: 0.4rem 1.2rem; margin-bottom: 0.6rem; }
footer .row a { color: var(--quiet); text-decoration: none; }
footer .row a:hover { color: var(--ink); }
footer p { margin: 0.3rem 0; }