:root {
  --bg: #f6f5f1; --surface: #ffffff; --ink: #17171a; --muted: #6b6b73;
  --line: #e3e1da; --accent: #e8452c; --accent-soft: #fde7e2;
  --ok: #1f9d55; --ok-soft: #dff3e7;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111114; --surface: #1a1a1f; --ink: #f1f0ec; --muted: #9a9aa3;
    --line: #2b2b33; --accent: #ff6a4d; --accent-soft: #3a1d17;
    --ok: #3ccf7a; --ok-soft: #16301f;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: "Noto Sans KR", system-ui, -apple-system, sans-serif; line-height: 1.6;
}
.shell { max-width: 1040px; margin: 0 auto; padding: 0 16px; }

/* 메뉴: 폰은 버튼 줄, PC는 왼쪽 세로 메뉴 */
.side { padding: 20px 0 8px; }
.brand {
  display: inline-block; text-decoration: none; color: var(--muted);
  font-family: "JetBrains Mono", monospace; font-size: 12px; letter-spacing: .08em; margin-bottom: 12px;
}
.nav { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.nav a {
  display: flex; align-items: center; justify-content: center; gap: 6px;
  text-decoration: none; color: var(--ink); font-size: 14px; font-weight: 500;
  padding: 10px 8px; border-radius: 10px; border: 1px solid var(--line); background: var(--surface);
  white-space: nowrap;
}
.nav a[aria-current="page"] { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.nav svg { width: 13px; height: 13px; flex: none; }

@media (min-width: 768px) {
  .shell { display: grid; grid-template-columns: 184px 1fr; gap: 56px; }
  .side { position: sticky; top: 0; align-self: start; padding-top: 56px; }
  .brand { margin-bottom: 20px; }
  .nav { grid-template-columns: 1fr; gap: 4px; }
  .nav a { justify-content: flex-start; border-color: transparent; background: transparent; padding: 9px 12px; }
  .nav a:hover { background: var(--surface); border-color: var(--line); }
  .nav a[aria-current="page"]:hover { background: var(--ink); }
}

main { min-width: 0; }
header { padding: 40px 0 28px; }
@media (min-width: 768px) { header { padding-top: 56px; } }
.tag {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: "JetBrains Mono", monospace; font-size: 12px; color: var(--muted); letter-spacing: .04em;
}
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--ok); }
h1 { font-size: clamp(34px, 8vw, 56px); font-weight: 900; line-height: 1.15; margin: 14px 0 12px; letter-spacing: -0.02em; }
h1 em { font-style: normal; color: var(--accent); }
h1.page { font-size: clamp(28px, 6vw, 40px); margin-top: 0; }
.lead { color: var(--muted); font-size: 16px; margin: 0; max-width: 36em; }

.grid { display: grid; grid-template-columns: 1fr; gap: 12px; }
@media (min-width: 640px) { .grid { grid-template-columns: 1fr 1fr; } }
.card {
  display: block; text-decoration: none; color: inherit;
  background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 18px;
  transition: transform .15s ease, border-color .15s ease;
}
a.card:hover { transform: translateY(-2px); border-color: var(--accent); }
.kind {
  display: inline-block; font-size: 11px; font-weight: 700; color: var(--accent);
  background: var(--accent-soft); padding: 2px 8px; border-radius: 999px;
}
.auto .kind { color: var(--ok); background: var(--ok-soft); }
.card h3 { font-size: 18px; margin: 10px 0 4px; }
.card p { margin: 0; color: var(--muted); font-size: 14px; }

/* 잠금 화면 */
.lock {
  max-width: 360px; background: var(--surface); border: 1px solid var(--line);
  border-radius: 16px; padding: 24px; display: grid; gap: 12px;
}
.lock .ico { width: 28px; height: 28px; color: var(--muted); }
.lock p { margin: 0; color: var(--muted); font-size: 14px; }
.lock input[type=password] {
  font: inherit; font-size: 16px; padding: 10px 12px; border-radius: 10px;
  border: 1px solid var(--line); background: var(--bg); color: var(--ink); width: 100%;
}
.lock input[type=password]:focus { outline: 2px solid var(--ok); outline-offset: 1px; }
.lock label { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--muted); }
.btn {
  font: inherit; font-size: 15px; font-weight: 700; padding: 10px 14px; border-radius: 10px;
  border: 0; background: var(--ink); color: var(--bg); cursor: pointer;
}
.btn.ghost { background: transparent; color: var(--muted); border: 1px solid var(--line); font-size: 13px; font-weight: 500; padding: 6px 12px; }
.err { color: var(--accent) !important; }
.bar { display: flex; justify-content: flex-end; margin-top: 16px; }

footer { padding: 40px 0 48px; color: var(--muted); font-size: 12px; font-family: "JetBrains Mono", monospace; }