:root {
  --bg0: #0f1c17;
  --bg1: #173028;
  --bg2: #1f3d33;
  --ink: #e8f2ec;
  --muted: #9bb5a8;
  --accent: #6fbf9a;
  --accent-ink: #0d1a15;
  --danger: #e07a6a;
  --ok: #7dcea0;
  --line: rgba(232, 242, 236, 0.12);
  --font-display: "Source Han Serif SC", "Noto Serif SC", "Songti SC", Georgia, serif;
  --font-body: "IBM Plex Sans", "PingFang SC", "Noto Sans SC", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(111, 191, 154, 0.18), transparent 60%),
    radial-gradient(900px 500px at 100% 0%, rgba(70, 120, 100, 0.22), transparent 55%),
    linear-gradient(165deg, var(--bg0), var(--bg1) 45%, var(--bg2));
  background-attachment: fixed;
}

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

.page {
  width: min(720px, 100% - 2rem);
  margin: 0 auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--line);
}

.brand {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--ink);
  letter-spacing: 0.04em;
  text-decoration: none;
}

.nav { display: flex; gap: 0.9rem; align-items: center; }
.nav a { color: var(--ink); }

.main { flex: 1; padding: 2rem 0 3rem; }
.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.25rem 0 2rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.hero { padding: 2.5rem 0 1rem; animation: rise 0.7s ease both; }
.brand-mark {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 8vw, 3.6rem);
  margin: 0 0 0.75rem;
  letter-spacing: 0.06em;
  line-height: 1.1;
}
.hero h1 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.4rem, 4vw, 1.9rem);
  margin: 0 0 0.75rem;
}
.lead { color: var(--muted); max-width: 28rem; line-height: 1.6; }
.cta-row { display: flex; gap: 0.75rem; margin-top: 1.5rem; flex-wrap: wrap; }

.form-panel {
  max-width: 26rem;
  animation: rise 0.55s ease both;
}
.form-panel.wide { max-width: 40rem; }
.tips { color: var(--muted); padding-left: 1.1rem; line-height: 1.6; }
.tag-field { border: 1px solid var(--line); border-radius: 0.55rem; padding: 0.75rem; }
.tag-field legend { padding: 0 0.35rem; color: var(--muted); }
.tag-grid { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.tag-chip {
  display: inline-flex;
  gap: 0.35rem;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.3rem 0.7rem;
  font-size: 0.9rem;
}
.success-box {
  margin-top: 1.5rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: 0.7rem;
  background: rgba(8, 18, 14, 0.35);
  animation: rise 0.45s ease both;
}
.token-box {
  word-break: break-all;
  padding: 0.75rem;
  background: rgba(0,0,0,0.25);
  border-radius: 0.5rem;
}
.btn-danger { background: var(--danger); color: #1a0c0a; }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
}
.stats-grid > div {
  border: 1px solid var(--line);
  border-radius: 0.6rem;
  padding: 0.8rem;
  background: rgba(8,18,14,0.3);
}
.admin-list { display: grid; gap: 0.9rem; margin-top: 1rem; }
.admin-item {
  border: 1px solid var(--line);
  border-radius: 0.65rem;
  padding: 0.9rem;
  background: rgba(8,18,14,0.28);
}
.admin-item header { color: var(--muted); margin-bottom: 0.4rem; font-size: 0.9rem; }
.admin-item p { white-space: pre-wrap; line-height: 1.55; margin: 0 0 0.75rem; }
.feed-section { margin-top: 2rem; animation: rise 0.7s ease both 0.1s; }
.feed-tabs { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-bottom: 1rem; }
.feed-tabs .tab {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  border-radius: 999px;
  padding: 0.35rem 0.8rem;
  cursor: pointer;
  font: inherit;
}
.feed-tabs .tab.active { background: rgba(111,191,154,0.18); border-color: rgba(111,191,154,0.45); }
.feed-list { display: grid; gap: 0.75rem; }
.feed-item {
  display: block;
  color: inherit;
  text-decoration: none;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--line);
}
.feed-item:hover { color: var(--accent); }
.feed-meta { color: var(--muted); font-size: 0.85rem; margin-bottom: 0.35rem; }
.detail { animation: rise 0.5s ease both; }
.detail-body { white-space: pre-wrap; line-height: 1.7; font-size: 1.05rem; margin: 1rem 0 1.25rem; }
.meta-row { display: flex; gap: 1rem; color: var(--muted); margin-bottom: 1rem; }
.sr-only { position:absolute; width:1px; height:1px; overflow:hidden; clip:rect(0,0,0,0); }
.comments { margin-top: 2rem; padding-top: 1rem; border-top: 1px solid var(--line); }
.comments h2 { font-family: var(--font-display); font-weight: 500; }
.comment-list { display: grid; gap: 0.9rem; margin-top: 1rem; }
.comment-item p { margin: 0.35rem 0; white-space: pre-wrap; }
.comment-item.nested { margin-left: 1rem; padding-left: 0.75rem; border-left: 2px solid var(--line); }
.replies { display: grid; gap: 0.6rem; margin-top: 0.5rem; }
.form-panel h1 {
  font-family: var(--font-display);
  font-weight: 500;
  margin: 0 0 0.5rem;
}
.form-panel h2 {
  font-size: 1.05rem;
  margin: 2rem 0 0.75rem;
  font-weight: 600;
}

.stack { display: grid; gap: 0.9rem; margin: 1.25rem 0; }
label { display: grid; gap: 0.35rem; font-size: 0.92rem; }
label.checkbox {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
input[type="text"],
input[type="email"],
input[type="password"],
textarea,
select {
  width: 100%;
  border: 1px solid var(--line);
  background: rgba(8, 18, 14, 0.45);
  color: var(--ink);
  border-radius: 0.55rem;
  padding: 0.7rem 0.8rem;
  font: inherit;
}
input:focus, textarea:focus, select:focus {
  outline: 2px solid rgba(111, 191, 154, 0.45);
  border-color: transparent;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 0.55rem;
  background: var(--accent);
  color: var(--accent-ink);
  font: inherit;
  font-weight: 600;
  padding: 0.7rem 1.1rem;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s ease, filter 0.15s ease;
}
.btn:hover { filter: brightness(1.05); text-decoration: none; transform: translateY(-1px); }
.btn-sm { padding: 0.4rem 0.75rem; font-size: 0.9rem; }
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}
.linkish {
  background: none;
  border: 0;
  color: var(--ink);
  font: inherit;
  cursor: pointer;
  padding: 0;
}
.muted { color: var(--muted); }
.error { color: var(--danger); margin: 0; }
.ok { color: var(--ok); margin: 0; }

@keyframes rise {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}

@media (max-width: 480px) {
  .page { width: min(100% - 1.25rem, 720px); }
  .hero { padding-top: 1.5rem; }
}