:root {
  --ink: #1c2a24;
  --muted: #5a6b63;
  --line: rgba(28, 42, 36, 0.12);
  --paper: #f3f7f4;
  --leaf: #2f6b4f;
  --leaf-deep: #1e4634;
  --glow: #c8e6d5;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  min-height: 100%;
}

body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
}

.bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 80% 50% at 10% -10%, var(--glow), transparent 55%),
    radial-gradient(ellipse 60% 40% at 100% 0%, #dce9e2, transparent 50%),
    linear-gradient(180deg, #eef5f0 0%, var(--paper) 45%, #e7efe9 100%);
}

.top {
  max-width: 920px;
  margin: 0 auto;
  padding: 28px 24px 0;
}

.brand {
  font-family: "ZCOOL XiaoWei", "Noto Serif SC", serif;
  font-size: 28px;
  letter-spacing: 0.08em;
  color: var(--leaf-deep);
}

.hero {
  max-width: 920px;
  margin: 0 auto;
  padding: 72px 24px 40px;
}

.eyebrow {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--leaf);
  margin-bottom: 18px;
}

.hero h1 {
  font-family: "ZCOOL XiaoWei", "Noto Serif SC", serif;
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 400;
  line-height: 1.25;
  max-width: 14em;
  margin-bottom: 20px;
}

.lead {
  color: var(--muted);
  font-size: 17px;
  max-width: 34em;
}

.panel {
  max-width: 920px;
  margin: 0 auto;
  padding: 8px 24px 64px;
}

.panel h2 {
  font-size: 15px;
  font-weight: 500;
  color: var(--muted);
  margin-bottom: 16px;
  letter-spacing: 0.04em;
}

.links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.card-link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 22px 20px;
  border: 1px solid var(--line);
  border-radius: 4px;
  text-decoration: none;
  color: inherit;
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(6px);
  transition: border-color 0.2s ease, transform 0.2s ease, background 0.2s ease;
}

.card-link:hover {
  border-color: var(--leaf);
  background: rgba(255, 255, 255, 0.85);
  transform: translateY(-2px);
}

.label {
  font-size: 18px;
  font-weight: 500;
  color: var(--leaf-deep);
}

.hint {
  font-size: 13px;
  color: var(--muted);
}

.note {
  margin-top: 14px;
  font-size: 13px;
  color: var(--muted);
}

.foot {
  border-top: 1px solid var(--line);
  padding: 28px 24px 40px;
  text-align: center;
  font-size: 13px;
  color: var(--muted);
}

.foot p + p {
  margin-top: 8px;
}

.foot a {
  color: var(--muted);
  text-decoration: none;
}

.foot a:hover {
  color: var(--leaf);
  text-decoration: underline;
}

@media (max-width: 640px) {
  .hero {
    padding-top: 48px;
  }

  .links {
    grid-template-columns: 1fr;
  }
}