:root {
  --ink: #1c1914;
  --paper: #f3ead8;
  --paper-2: #e7dcc4;
  --stamp: #c5161d;
  --brass: #b68a3a;
  --line: rgba(28, 25, 20, 0.12);
  --ok: #2f6b4f;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: "Source Han Serif SC", "Noto Serif SC", "Songti SC", "SimSun", serif;
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(197, 22, 29, 0.08), transparent 50%),
    linear-gradient(180deg, #f7f0df 0%, var(--paper) 40%, #efe4cc 100%);
  color: var(--ink);
}

a { color: inherit; }
button, input, select, textarea { font: inherit; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 7vw 0;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}
.seal {
  width: 42px;
  height: 42px;
  border: 2px solid var(--stamp);
  color: var(--stamp);
  display: grid;
  place-items: center;
  font-weight: 700;
  letter-spacing: 0.1em;
  transform: rotate(-8deg);
  background: rgba(197, 22, 29, 0.06);
}
.brand b { font-size: 18px; }
.brand span { display: block; font-size: 12px; opacity: 0.62; letter-spacing: 0.18em; }
.nav { display: flex; gap: 10px; align-items: center; font-size: 14px; }
.nav a, .nav button {
  background: transparent;
  border: 1px solid transparent;
  padding: 6px 10px;
  cursor: pointer;
  text-decoration: none;
}
.nav a:hover, .nav button:hover { border-color: var(--line); }

.hero {
  padding: 42px 7vw 18px;
  max-width: 1200px;
}
.eyebrow {
  font-family: "Bahnschrift", "DIN Alternate", sans-serif;
  letter-spacing: 0.28em;
  font-size: 12px;
  color: var(--brass);
  margin-bottom: 10px;
}
.hero h1 {
  margin: 0;
  font-size: clamp(32px, 5vw, 64px);
  line-height: 1.12;
  font-weight: 700;
}
.hero p.lead {
  max-width: 640px;
  font-size: 18px;
  line-height: 1.7;
  opacity: 0.78;
}

.matrix {
  padding: 10px 7vw 80px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  max-width: 1200px;
}
.dock {
  display: block;
  text-decoration: none;
  background: #fffaf0;
  border: 1px solid var(--line);
  min-height: 220px;
  padding: 28px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(80, 50, 20, 0.06);
}
.dock::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 8px;
  background: var(--stamp);
}
.dock:nth-child(2)::before { background: #1e4d7b; }
.dock:nth-child(3)::before { background: var(--ok); }
.dock:nth-child(4)::before { background: var(--brass); }
.dock:hover { transform: translateY(-3px); }
.idx {
  font-family: "Bahnschrift", sans-serif;
  letter-spacing: 0.2em;
  font-size: 12px;
  opacity: 0.5;
}
.dock h2 { margin: 12px 0 8px; font-size: 28px; }
.dock p { margin: 0; opacity: 0.7; line-height: 1.6; }
.dock .go {
  margin-top: 22px;
  display: inline-block;
  border-bottom: 1px solid currentColor;
  font-size: 14px;
}

.auth-wrap {
  max-width: 460px;
  margin: 8vh auto 60px;
  background: #fffaf0;
  border: 1px solid var(--line);
  padding: 36px;
}
.auth-wrap h1 { margin: 0 0 8px; font-size: 28px; }
.field { margin: 16px 0; }
.field label { display: block; font-size: 13px; margin-bottom: 6px; opacity: 0.7; }
.field input, .field textarea, .field select {
  width: 100%;
  border: 1px solid var(--line);
  background: #fff;
  padding: 10px 12px;
}
.btn {
  appearance: none;
  border: 0;
  background: var(--ink);
  color: var(--paper);
  padding: 10px 16px;
  cursor: pointer;
}
.btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btn.danger { background: var(--stamp); color: #fff; }
.msg { min-height: 1.4em; font-size: 13px; color: var(--stamp); margin-top: 10px; }

.account {
  max-width: 920px;
  margin: 0 auto 80px;
  padding: 20px 7vw;
}
.cards { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.card {
  background: #fffaf0;
  border: 1px solid var(--line);
  padding: 20px;
}
.muted { opacity: 0.65; font-size: 13px; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--line); }
.secret { word-break: break-all; background: #fff; padding: 10px; border: 1px dashed var(--brass); }

@media (max-width: 800px) {
  .matrix, .cards { grid-template-columns: 1fr; }
  .hero { padding-top: 24px; }
}