:root {
  --bg: #f6f7fb;
  --card: #ffffff;
  --text: #172033;
  --muted: #5d6779;
  --border: #e3e7ef;
  --primary: #4f46e5;
  --primary-ink: #ffffff;
  --code-bg: #0f172a;
  --code-ink: #e2e8f0;
  --ok: #15803d;
  --bad: #b91c1c;
  --warn-bg: #fff7e6;
  --warn-border: #f5c26b;
  --radius: 14px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1020;
    --card: #131a2e;
    --text: #e6e9f2;
    --muted: #9aa3b8;
    --border: #253049;
    --primary: #7c74ff;
    --code-bg: #070b16;
    --warn-bg: #2a2110;
    --warn-border: #8a6420;
    --ok: #4ade80;
    --bad: #f87171;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--primary); }
.wrap { max-width: 920px; margin: 0 auto; padding: 0 16px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.error { color: var(--bad); font-size: 14px; min-height: 1em; }
[hidden] { display: none !important; }

.topbar { background: var(--card); border-bottom: 1px solid var(--border); }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; color: var(--text); text-decoration: none; }
.logo { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 8px; background: var(--primary); color: var(--primary-ink); }
.session { display: flex; align-items: center; gap: 10px; font-size: 14px; }

.hero { padding: 40px 0 16px; }
.hero h1 { font-size: clamp(26px, 4vw, 36px); line-height: 1.2; margin: 0 0 10px; }
.hero p { color: var(--muted); max-width: 680px; margin: 0; }
.steps-strip { display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 20px 0 0; list-style: none; }
.steps-strip li { display: flex; align-items: center; gap: 8px; padding: 6px 12px; border: 1px solid var(--border); border-radius: 999px; background: var(--card); font-size: 13px; }
.steps-strip b { display: grid; place-items: center; width: 20px; height: 20px; border-radius: 50%; background: var(--primary); color: var(--primary-ink); font-size: 11px; }

.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; margin: 16px 0; }
.card h2 { display: flex; align-items: center; gap: 10px; font-size: 18px; margin: 0 0 6px; }
.card h3 { font-size: 15px; margin: 22px 0 4px; }
.card > p { margin: 0 0 12px; }
.num { display: grid; place-items: center; width: 26px; height: 26px; border-radius: 50%; background: var(--primary); color: var(--primary-ink); font-size: 13px; flex: none; }

label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; font-weight: 600; }
label.inline { flex-direction: row; align-items: center; gap: 8px; }
input, select {
  font: inherit; color: var(--text); background: var(--bg);
  border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; min-width: 0;
}
input:focus, select:focus { outline: 2px solid var(--primary); outline-offset: 1px; }
.grid-3 { display: grid; gap: 14px; grid-template-columns: repeat(3, 1fr); }
.span-3 { grid-column: 1 / -1; }
.grid-site { display: grid; gap: 14px; grid-template-columns: 1fr 180px auto; align-items: end; }
@media (max-width: 720px) {
  .grid-3, .grid-site { grid-template-columns: 1fr; }
}
.row { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 12px; }

.btn { font: inherit; font-weight: 600; border-radius: 10px; border: 1px solid transparent; padding: 10px 16px; cursor: pointer; }
.btn.primary { background: var(--primary); color: var(--primary-ink); }
.btn.ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn.sm { padding: 6px 10px; font-size: 13px; }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { font: inherit; font-size: 13px; padding: 6px 12px; border-radius: 999px; border: 1px solid var(--border); background: var(--bg); color: var(--text); cursor: pointer; }
.chip.active { border-color: var(--primary); color: var(--primary); }

.site-head { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; }
.site-head h2 { margin: 0; }
.site-head > div { margin-right: auto; }
.badge { font-size: 12px; font-weight: 700; padding: 4px 10px; border-radius: 999px; background: var(--bg); border: 1px solid var(--border); }
.badge.verified { color: var(--ok); border-color: currentColor; }
.badge.failed { color: var(--bad); border-color: currentColor; }

.code { position: relative; margin: 10px 0; border-radius: 10px; background: var(--code-bg); overflow: hidden; }
.code::before { content: attr(data-label); display: block; padding: 6px 12px; font: 12px ui-monospace, SFMono-Regular, Consolas, monospace; color: #94a3b8; border-bottom: 1px solid #1e293b; }
.code[data-label=""]::before { display: none; }
.code pre { margin: 0; padding: 12px 56px 12px 12px; overflow-x: auto; color: var(--code-ink); font: 12.5px/1.6 ui-monospace, SFMono-Regular, Consolas, monospace; white-space: pre; }
.copy { position: absolute; top: 4px; right: 6px; font: 12px system-ui, sans-serif; padding: 3px 8px; border-radius: 6px; border: 1px solid #334155; background: #1e293b; color: #e2e8f0; cursor: pointer; }

.notice { border-radius: 10px; padding: 12px; margin: 10px 0; }
.notice.warn { background: var(--warn-bg); border: 1px solid var(--warn-border); }
.secret-row code { font-size: 13px; padding: 6px 10px; border-radius: 8px; background: var(--bg); border: 1px solid var(--border); }
details { margin-top: 8px; }
summary { cursor: pointer; font-weight: 600; font-size: 14px; }

.tabs { display: flex; gap: 6px; margin: 8px 0 0; }
.tab { font: inherit; font-size: 13px; padding: 6px 12px; border-radius: 8px; border: 1px solid var(--border); background: var(--bg); color: var(--text); cursor: pointer; }
.tab.active { background: var(--primary); color: var(--primary-ink); border-color: var(--primary); }

.checks { list-style: none; padding: 0; margin: 14px 0 0; display: grid; gap: 6px; }
.checks li { display: flex; gap: 8px; font-size: 14px; }
.checks li::before { content: "○"; color: var(--muted); }
.checks li.pass::before { content: "✓"; color: var(--ok); font-weight: 700; }
.checks li.fail::before { content: "✕"; color: var(--bad); font-weight: 700; }

.chat { border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
.chat-log { height: 320px; overflow-y: auto; padding: 14px; display: flex; flex-direction: column; gap: 10px; background: var(--bg); }
.msg { max-width: 85%; padding: 9px 12px; border-radius: 12px; white-space: pre-wrap; word-break: break-word; font-size: 14px; }
.msg.user { align-self: flex-end; background: var(--primary); color: var(--primary-ink); }
.msg.bot { align-self: flex-start; background: var(--card); border: 1px solid var(--border); }
.msg .sources { margin-top: 6px; font-size: 12px; display: flex; flex-wrap: wrap; gap: 6px; }
.chat-form { display: flex; gap: 8px; padding: 10px; background: var(--card); border-top: 1px solid var(--border); }
.chat-form input { flex: 1; }

.footer { padding: 24px 16px 40px; }