:root {
  --brand: #1a73e8; --brand-ink: #fff; --bg: #fafaf8; --surface: #fff; --fg: #1f2328; --muted: #5f6368;
  --border: #e3e3df; --ok: #188038; --warn: #b06000; --bad: #d93025; --soft: #eef3fd;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) { --bg: #141518; --surface: #1d1f23; --fg: #e8eaed; --muted: #9aa0a6; --border: #2e3136; --soft: #1f2a3d; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--brand); }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 20px; }
header.top { border-bottom: 1px solid var(--border); background: var(--surface); }
header.top .wrap { display: flex; align-items: center; gap: 16px; height: 64px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--fg); text-decoration: none; font-size: 18px; }
.logo img { width: 30px; height: 30px; }
.logo small { color: var(--muted); font-weight: 400; font-size: 14px; }
nav.links { margin-left: auto; display: flex; gap: 18px; align-items: center; font-size: 15px; }
nav.links a { color: var(--fg); text-decoration: none; }
.btn { display: inline-block; padding: 10px 18px; border-radius: 8px; border: 0; background: var(--brand); color: var(--brand-ink); font: inherit; font-weight: 600; cursor: pointer; text-decoration: none; }
.btn.ghost { background: var(--soft); color: var(--brand); }
.btn.small { padding: 6px 12px; font-size: 14px; }
.btn.danger { background: transparent; color: var(--bad); border: 1px solid var(--border); }
.btn:disabled { opacity: .55; cursor: default; }
.hero { padding: 72px 0 56px; text-align: center; }
.hero h1 { font-size: clamp(32px, 5vw, 52px); line-height: 1.1; margin: 0 0 16px; letter-spacing: -.02em; }
.hero p { font-size: 19px; color: var(--muted); max-width: 640px; margin: 0 auto 28px; }
.pill { display: inline-block; padding: 4px 12px; border-radius: 99px; background: var(--soft); color: var(--brand); font-size: 13px; font-weight: 600; margin-bottom: 16px; }
.cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; padding: 24px 0 64px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 20px; }
.card h3 { margin: 0 0 6px; font-size: 17px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
h2.section { text-align: center; font-size: 28px; margin: 24px 0 0; }
footer.bottom { border-top: 1px solid var(--border); padding: 28px 0; color: var(--muted); font-size: 14px; }
footer.bottom .wrap { display: flex; gap: 16px; flex-wrap: wrap; justify-content: space-between; }
.narrow { max-width: 440px; margin: 48px auto; }
.page { max-width: 760px; margin: 40px auto 64px; }
label { display: block; font-size: 14px; color: var(--muted); margin: 12px 0 4px; }
input, textarea, select { width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; font: inherit; background: var(--surface); color: var(--fg); }
textarea.key { font: 12px/1.4 ui-monospace, Consolas, monospace; word-break: break-all; resize: vertical; }
.tabs { display: flex; gap: 4px; background: var(--soft); padding: 4px; border-radius: 10px; margin-bottom: 8px; }
.tabs button { flex: 1; padding: 8px; border: 0; border-radius: 8px; background: none; font: inherit; cursor: pointer; color: var(--fg); }
.tabs button.on { background: var(--surface); font-weight: 600; box-shadow: 0 1px 2px rgba(0,0,0,.08); }
form.card > p:has(> .btn) { margin: 20px 0 0; }
form.card > p > .btn { width: 100%; padding: 12px 18px; }
.msg { margin-top: 12px; font-size: 14px; min-height: 1.4em; }
.msg.err { color: var(--bad); } .msg.ok { color: var(--ok); }
.status { display: inline-block; padding: 2px 10px; border-radius: 99px; font-size: 13px; font-weight: 600; }
.status.pending { background: #fef7e0; color: var(--warn); }
.status.approved { background: #e6f4ea; color: var(--ok); }
.status.rejected { background: #fce8e6; color: var(--bad); }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 600; }
.row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.muted { color: var(--muted); }
ol.steps li { margin: 6px 0; }
@media (max-width: 640px) { nav.links .hide-sm { display: none; } .tablewrap { overflow-x: auto; } }