:root {
  --green-900: #123d2b;
  --green-700: #1d6b47;
  --green-500: #2f9e63;
  --green-100: #e7f4ec;
  --ink: #1c2b23;
  --muted: #5c6f64;
  --line: #d7e6dc;
  --white: #ffffff;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.7;
}

a { color: var(--green-700); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap {
  width: min(1080px, 92vw);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
}

.brand:hover { text-decoration: none; }

.logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--green-500), var(--green-700));
  color: var(--white);
  font-size: 22px;
  font-weight: 700;
}

.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text strong { font-size: 18px; letter-spacing: 0.02em; }
.brand-text small { color: var(--muted); font-size: 11px; letter-spacing: 0.14em; }

.nav { display: flex; gap: 22px; flex-wrap: wrap; }
.nav a { color: var(--ink); font-size: 15px; }
.nav a:hover { color: var(--green-700); }

.hero {
  background:
    radial-gradient(1200px 500px at 15% -10%, var(--green-100), transparent 60%),
    linear-gradient(180deg, #f6fbf8, #ffffff);
  padding: 96px 0 88px;
  border-bottom: 1px solid var(--line);
}

.tag {
  display: inline-block;
  margin: 0 0 18px;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--green-100);
  color: var(--green-700);
  font-size: 13px;
  letter-spacing: 0.08em;
}

.hero h1 {
  margin: 0 0 10px;
  font-size: clamp(36px, 6vw, 60px);
  letter-spacing: 0.04em;
  color: var(--green-900);
}

.subtitle {
  margin: 0 0 22px;
  color: var(--green-700);
  letter-spacing: 0.32em;
  font-size: 15px;
}

.hero-desc {
  max-width: 620px;
  margin: 0 0 34px;
  color: var(--muted);
  font-size: 16px;
}

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 11px 24px;
  border-radius: 10px;
  font-size: 15px;
  border: 1px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn:hover { text-decoration: none; transform: translateY(-1px); }

.btn.primary {
  background: var(--green-700);
  color: var(--white);
  box-shadow: 0 10px 24px rgba(29, 107, 71, 0.22);
}

.btn.ghost {
  background: var(--white);
  color: var(--green-700);
  border-color: var(--line);
}

.section { padding: 64px 0; }
.section.alt { background: #f7fbf9; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

.section h2 {
  margin: 0 0 18px;
  font-size: 26px;
  color: var(--green-900);
  letter-spacing: 0.04em;
}

.section p { margin: 0; color: var(--muted); max-width: 760px; }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
  margin-top: 8px;
}

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px;
}

.card h3 { margin: 0 0 8px; font-size: 18px; color: var(--green-900); }
.card p { margin: 0; font-size: 14px; }

.news { list-style: none; margin: 8px 0 0; padding: 0; }
.news li {
  padding: 12px 0;
  border-bottom: 1px dashed var(--line);
  color: var(--muted);
}
.news li:last-child { border-bottom: none; }
.news .date { color: var(--green-700); margin-right: 14px; font-variant-numeric: tabular-nums; }

.site-footer {
  padding: 28px 0;
  border-top: 1px solid var(--line);
}
.site-footer p { margin: 0; color: var(--muted); font-size: 13px; text-align: center; }

/* 白旗 · 停更横幅 */
.surrender {
  background: linear-gradient(180deg, #fbfaf6, #f2f0e8);
  border-bottom: 1px solid #e2ded2;
  text-align: center;
  padding: 26px 16px 22px;
}

.surrender-flags {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 28px;
  margin-bottom: 8px;
}

.flag {
  width: 72px;
  height: 90px;
  overflow: visible;
  will-change: transform;
}

.flag .pole {
  fill: none;
  stroke: #9aa79f;
  stroke-width: 5;
  stroke-linecap: round;
}

.flag .cloth {
  fill: #ffffff;
  stroke: #c9d3cd;
  stroke-width: 3;
  stroke-linejoin: round;
}

.flag:first-child {
  transform-origin: 20px 140px;
  animation: flag-wave 3.2s ease-in-out infinite;
}

.flag:last-child {
  transform-origin: 20px 140px;
  animation: flag-wave 3.6s ease-in-out 0.4s infinite;
}

@keyframes flag-wave {
  0%, 100% { transform: rotate(-2deg); }
  50%      { transform: rotate(2.4deg); }
}

@media (prefers-reduced-motion: reduce) {
  .flag { animation: none !important; }
}

.surrender-text {
  margin: 4px 0 6px;
  font-size: clamp(22px, 4.4vw, 38px);
  font-weight: 800;
  letter-spacing: 0.06em;
  color: #2c3a33;
}

.surrender-sub {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 640px) {
  .hero { padding: 64px 0 56px; }
  .nav { gap: 14px; }
  .surrender { padding: 20px 14px 18px; }
  .surrender-flags { gap: 18px; }
  .flag { width: 58px; height: 74px; }
}