:root {
  --paper: #f4ecd8;
  --paper-2: #fbf6ea;
  --ink: #2c2416;
  --ink-soft: #6d5c43;
  --navy: #1f3a5f;
  --oxblood: #8c2f2f;
  --gold: #a8791b;
  --rule: #d8c9a4;
}

* { box-sizing: border-box; }

body.shell {
  margin: 0;
  min-height: 100vh;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.7 Georgia, "Noto Serif SC", "Songti SC", "SimSun", "Microsoft YaHei", serif;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 20px;
}

main { width: 100%; max-width: 820px; }

h1 { margin: 0 0 4px; font-size: 30px; letter-spacing: .02em; color: var(--navy); }
h2 { font-size: 20px; margin: 0 0 16px; color: var(--navy); }
h3 { margin: 0 0 6px; font-size: 18px; color: var(--navy); }
p { margin: 0 0 14px; }
.sub, .meta, .crumb, .empty { color: var(--ink-soft); font-size: 14px; }
.crumb { margin-bottom: 18px; padding-bottom: 10px; border-bottom: 2px solid var(--rule); }

label { display: block; margin-bottom: 14px; font-size: 14px; color: var(--ink-soft); letter-spacing: .04em; }
input {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 11px 13px;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: #fffdf7;
  color: var(--ink);
  font-size: 16px;
  font-family: inherit;
}
input:focus { outline: 2px solid var(--navy); outline-offset: 1px; border-color: var(--navy); }

button {
  padding: 11px 24px;
  border: 0;
  border-radius: 6px;
  background: var(--navy);
  color: #f6efdd;
  font-size: 16px;
  font-weight: 600;
  font-family: inherit;
  letter-spacing: .06em;
  cursor: pointer;
}
button:hover { background: #16293f; }
button.ghost { background: transparent; color: var(--ink-soft); border: 1px solid var(--rule); font-weight: 400; }
button.ghost:hover { color: var(--oxblood); border-color: var(--oxblood); background: transparent; }

.login form {
  max-width: 380px;
  margin-top: 26px;
  padding: 26px;
  background: var(--paper-2);
  border: 1px solid var(--rule);
  outline: 1px solid var(--rule);
  outline-offset: 4px;
  border-radius: 4px;
}
.login h1 { padding-bottom: 12px; border-bottom: 3px double var(--navy); }

.err { color: var(--oxblood); font-size: 14px; margin: -4px 0 12px; }

.grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); margin-bottom: 24px; }
.card {
  display: block;
  padding: 18px;
  background: var(--paper-2);
  border: 1px solid var(--rule);
  border-left: 4px solid var(--navy);
  border-radius: 4px;
  color: inherit;
  text-decoration: none;
  transition: border-color .15s, box-shadow .15s;
}
.card:hover { border-color: var(--gold); border-left-color: var(--oxblood); box-shadow: 0 2px 8px rgba(44, 36, 22, .12); }
.card p { color: var(--ink-soft); font-size: 14px; margin-bottom: 8px; }