:root {
  --ink: #1c2333;
  --ink-soft: #4a5568;
  --paper: #f4efe4;
  --paper-deep: #ebe3d2;
  --card: #fffaf1;
  --line: #d7cbb3;
  --stamp: #c23b2e;
  --stamp-soft: #f6d6d2;
  --pass: #2f6b4f;
  --pass-soft: #d9eee3;
  --navy: #243b6b;
  --navy-soft: #dce6f6;
  --warn: #9a6b16;
  --shadow: 0 18px 40px rgba(36, 28, 16, 0.12);
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 8%, rgba(194, 59, 46, 0.08), transparent 28%),
    radial-gradient(circle at 88% 0%, rgba(36, 59, 107, 0.08), transparent 32%),
    repeating-linear-gradient(0deg, transparent, transparent 27px, rgba(215, 203, 179, 0.45) 28px),
    var(--paper);
}

button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
a { color: var(--navy); }

.wrap { max-width: 1080px; margin: 0 auto; padding: 28px 20px 64px; }
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 28px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.seal {
  width: 48px;
  height: 48px;
  border: 3px solid var(--stamp);
  color: var(--stamp);
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-weight: 800;
  letter-spacing: 1px;
  transform: rotate(-8deg);
  background: rgba(255, 250, 241, 0.8);
}
.brand h1 { margin: 0; font-size: 22px; letter-spacing: 0.08em; }
.brand p { margin: 2px 0 0; color: var(--ink-soft); font-size: 13px; }
.nav { display: flex; gap: 8px; flex-wrap: wrap; }
.nav button, .ghost, .primary, .danger, .tiny {
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink);
  padding: 8px 14px;
  border-radius: 999px;
}
.primary { background: var(--navy); color: #fff; border-color: var(--navy); }
.danger { background: var(--stamp); color: #fff; border-color: var(--stamp); }
.tiny { padding: 4px 10px; font-size: 12px; }
.ghost:hover, .nav button:hover { background: var(--paper-deep); }

.hero, .card, .paper {
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.hero {
  padding: 36px;
  border-radius: 28px;
  display: grid;
  grid-template-columns: 1.3fr 0.9fr;
  gap: 28px;
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: "EXAM";
  position: absolute;
  right: -8px;
  bottom: -18px;
  font-size: 92px;
  font-weight: 900;
  letter-spacing: 0.18em;
  color: rgba(36, 59, 107, 0.06);
}
.hero h2 { margin: 0 0 10px; font-size: 34px; }
.hero .meta { color: var(--ink-soft); line-height: 1.7; }
.stats { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 18px; }
.stat {
  background: var(--paper);
  border: 1px dashed var(--line);
  padding: 12px;
  border-radius: 14px;
}
.stat b { display: block; font-size: 20px; }
.stat span { color: var(--ink-soft); font-size: 12px; }

.login-box { padding: 22px; border-radius: 22px; background: #fff; border: 1px solid var(--line); }
.login-box h3 { margin: 0 0 14px; }
label { display: block; font-size: 13px; color: var(--ink-soft); margin: 10px 0 6px; }
input, select, textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
}
.row { display: flex; gap: 10px; }
.row > * { flex: 1; }
.mt { margin-top: 14px; }
.full { width: 100%; }

.notice {
  margin-top: 10px;
  padding: 10px 12px;
  border-radius: 10px;
  background: var(--stamp-soft);
  color: var(--stamp);
  font-size: 13px;
}
.oknote { background: var(--pass-soft); color: var(--pass); }

.tabs { display: flex; gap: 8px; margin-bottom: 16px; flex-wrap: wrap; }
.tabs button.active { background: var(--navy); color: #fff; border-color: var(--navy); }
.grid-2 { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 16px; }
.card { padding: 18px; border-radius: 18px; }
.card h3 { margin: 0 0 12px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--ink-soft); font-weight: 600; }

.paper { padding: 28px; border-radius: 8px 24px 24px 8px; }
.q { padding: 16px 0; border-bottom: 1px dashed var(--line); }
.q:last-child { border-bottom: 0; }
.q .idx { color: var(--navy); font-weight: 700; margin-right: 8px; }
.options { display: grid; gap: 8px; margin-top: 10px; }
.opt {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
}
.opt.picked { border-color: var(--navy); background: var(--navy-soft); }
.opt.right { border-color: var(--pass); background: var(--pass-soft); }
.opt.wrong { border-color: var(--stamp); background: var(--stamp-soft); }
.progress {
  height: 8px;
  background: var(--paper-deep);
  border-radius: 99px;
  overflow: hidden;
  margin: 10px 0 18px;
}
.progress span { display: block; height: 100%; background: var(--navy); }

.score-card {
  text-align: center;
  padding: 40px 20px;
}
.score-card .mark {
  width: 140px;
  height: 140px;
  margin: 0 auto 16px;
  border: 6px solid var(--stamp);
  color: var(--stamp);
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 42px;
  font-weight: 900;
  transform: rotate(-6deg);
  background: rgba(255,255,255,0.7);
}
.muted { color: var(--ink-soft); font-size: 13px; }
.file { font-size: 13px; }
.hidden { display: none; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }

@media (max-width: 860px) {
  .hero, .grid-2 { grid-template-columns: 1fr; }
  .hero h2 { font-size: 28px; }
}