:root {
  --bg: #14161b; --panel: #1c1f27; --line: #2c303b; --text: #e9ebf0; --muted: #9aa1b2;
  --accent: #e8a33d; --accent-ink: #1a1304; --ok: #36c37f; --bad: #ff6b6b;
}
@media (prefers-color-scheme: light) {
  :root { --bg: #f5f6f8; --panel: #ffffff; --line: #dfe2e8; --text: #1b1e25; --muted: #5d6475; --accent: #b86e00; --accent-ink: #ffffff; --ok: #1a8f58; --bad: #c83a3a; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.55 system-ui, -apple-system, "Segoe UI", sans-serif; }
a { color: var(--accent); }
.wrap { max-width: 980px; margin: 0 auto; padding: 0 16px; }
header.top { border-bottom: 1px solid var(--line); }
header.top .wrap { display: flex; align-items: center; gap: 16px; min-height: 60px; flex-wrap: wrap; }
.brand { font-weight: 700; font-size: 18px; text-decoration: none; color: var(--text); }
.brand span { color: var(--accent); margin-right: 6px; }
nav { margin-left: auto; display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }
nav a { text-decoration: none; }
.btn { display: inline-block; background: var(--accent); color: var(--accent-ink); border: 0; border-radius: 8px; padding: 10px 18px; font: inherit; font-weight: 600; cursor: pointer; text-decoration: none; }
.btn.ghost { background: transparent; color: var(--text); border: 1px solid var(--line); }
.btn.small { padding: 5px 12px; font-size: 14px; }
.btn.danger { background: transparent; color: var(--bad); border: 1px solid var(--bad); }
.btn:disabled { opacity: .5; cursor: default; }
.hero { padding: 64px 0 40px; }
.hero h1 { font-size: clamp(30px, 6vw, 48px); line-height: 1.15; margin: 0 0 14px; }
.hero p { color: var(--muted); font-size: 19px; max-width: 640px; }
.hero .cta { display: flex; gap: 12px; margin-top: 24px; flex-wrap: wrap; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; padding: 24px 0 56px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 18px 20px; }
.card h3 { margin: 0 0 6px; }
.card p { margin: 0; color: var(--muted); }
.narrow { max-width: 440px; margin: 48px auto; }
form.stack { display: grid; gap: 14px; }
label { display: grid; gap: 6px; font-weight: 600; font-size: 14px; }
input[type=text], input[type=email], input[type=password] { background: var(--bg); color: var(--text); border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; font: inherit; width: 100%; }
input:focus-visible, button:focus-visible, a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.msg { padding: 10px 14px; border-radius: 8px; border: 1px solid var(--line); background: var(--panel); }
.msg.err { border-color: var(--bad); color: var(--bad); }
.msg.ok { border-color: var(--ok); color: var(--ok); }
.hint { color: var(--muted); font-size: 14px; font-weight: 400; }
.tabs { display: flex; gap: 6px; margin: 24px 0 16px; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.tabs button { background: none; border: 0; border-bottom: 3px solid transparent; color: var(--muted); padding: 10px 14px; font: inherit; font-weight: 600; cursor: pointer; }
.tabs button[aria-selected=true] { color: var(--text); border-bottom-color: var(--accent); }
.list { display: grid; gap: 12px; }
.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.row .grow { flex: 1; min-width: 160px; }
.muted { color: var(--muted); }
.pill { font-size: 12px; padding: 2px 9px; border-radius: 999px; border: 1px solid var(--line); color: var(--muted); }
.pill.ok { color: var(--ok); border-color: var(--ok); }
.pill.bad { color: var(--bad); border-color: var(--bad); }
.checks { display: grid; gap: 6px; margin: 10px 0; }
.checks label { display: flex; align-items: center; gap: 8px; font-weight: 400; }
details.dev summary { cursor: pointer; font-weight: 600; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 9px 8px; border-bottom: 1px solid var(--line); font-size: 15px; }
th { color: var(--muted); font-weight: 600; font-size: 13px; }
.mt-sm { margin-top: 12px; }
.mt-md { margin-top: 24px; }
.m-0 { margin: 0; }
.list.mt-sm { display: grid; }
footer { border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; padding: 20px 0; margin-top: 40px; }
.bad-text { color: var(--bad); }
.code-out { margin-top: 12px; }
.code { font: 700 34px/1.2 ui-monospace, "SFMono-Regular", Consolas, monospace; letter-spacing: .12em; color: var(--accent); }
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 12px; }
.tile .big { font-size: 30px; font-weight: 700; }
select { background: var(--bg); color: var(--text); border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; font: inherit; }
.row label { display: grid; gap: 4px; font-size: 13px; font-weight: 600; }
.row label.checks { display: flex; align-items: center; gap: 6px; align-self: end; }
.row input[type=text] { width: auto; }