:root {
  --bg: #f5f7f6;
  --panel: #ffffff;
  --panel-2: #f3f5f4;
  --border: #e3e8e5;
  --text: #1f2937;
  --muted: #6b7280;
  --accent: #16a34a;
  --accent-dark: #15803d;
  --danger: #dc2626;
  --success: #16a34a;
  --radius: 14px;
  --shadow: 0 4px 18px rgba(31, 41, 55, .07);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
  background: radial-gradient(1200px 600px at 80% -10%, #e8f5ec 0%, var(--bg) 55%) fixed;
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

a { color: var(--accent-dark); text-decoration: none; }
a:hover { text-decoration: underline; }
code { background: var(--panel-2); border: 1px solid var(--border); padding: .08em .4em; border-radius: 6px; font-size: .9em; }

/* 顶栏 */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 28px;
  border-bottom: 1px solid var(--border);
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(8px);
  position: sticky; top: 0; z-index: 10;
}
.brand { font-weight: 800; font-size: 1.25rem; letter-spacing: -.02em; color: var(--text); }
.brand span { color: var(--accent); }
.topbar nav { display: flex; align-items: center; gap: 18px; }
.topbar nav a { color: var(--muted); font-weight: 600; }
.topbar nav a:hover { color: var(--text); text-decoration: none; }
.who { color: var(--muted); font-size: .9rem; padding-left: 12px; border-left: 1px solid var(--border); }

.container { max-width: 1040px; margin: 0 auto; padding: 32px 24px 64px; }

/* 卡片布局 */
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: start; }
.card.wide, .grid > .card.wide { grid-column: 1 / -1; }
@media (max-width: 820px) { .grid { grid-template-columns: 1fr; } }

h1 { font-size: 1.15rem; margin: 0 0 16px; letter-spacing: -.01em; }
h1 .count { color: var(--muted); font-weight: 500; font-size: .9rem; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }

/* 表单 */
form.stacked, .auth-card form { display: flex; flex-direction: column; gap: 14px; }
label { display: flex; flex-direction: column; gap: 6px; font-size: .85rem; color: var(--muted); font-weight: 600; }
input, select {
  background: #fff;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 11px 13px;
  border-radius: 10px;
  font-size: .95rem;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
input:focus, select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(22,163,74,.15); }
input::placeholder { color: #9ca3af; }

.btn {
  background: linear-gradient(180deg, #1fb457 0%, var(--accent) 100%);
  color: #fff; border: none; padding: 11px 18px; border-radius: 10px;
  font-weight: 700; font-size: .95rem; cursor: pointer; align-self: flex-start;
}
.btn:hover { filter: brightness(1.05); }
.btn-ghost { background: #fff; border: 1px solid var(--border); color: var(--text);
  padding: 7px 12px; border-radius: 9px; cursor: pointer; font-weight: 600; font-size: .85rem; }
.btn-ghost:hover { border-color: var(--muted); text-decoration: none; }
.btn-danger { background: #fff; border: 1px solid rgba(220,38,38,.35); color: var(--danger);
  padding: 6px 11px; border-radius: 8px; cursor: pointer; font-weight: 600; font-size: .82rem; }
.btn-danger:hover { background: rgba(220,38,38,.06); }

/* 链接类型选择 */
.kind-toggle { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.radio { position: relative; cursor: pointer; }
.radio input { position: absolute; opacity: 0; }
.radio span {
  display: flex; flex-direction: column; gap: 2px;
  border: 1px solid var(--border); border-radius: 10px; padding: 12px;
  background: var(--panel-2); transition: border-color .15s, background .15s;
}
.radio span small { color: var(--muted); font-weight: 500; font-size: .74rem; }
.radio input:checked + span { border-color: var(--accent); background: rgba(22,163,74,.07); }

/* 表格 */
table.links { width: 100%; border-collapse: collapse; font-size: .9rem; }
table.links th { text-align: left; color: var(--muted); font-weight: 600; font-size: .78rem;
  letter-spacing: .04em; padding: 8px 10px; border-bottom: 1px solid var(--border); }
table.links td { padding: 11px 10px; border-bottom: 1px solid #eef1ef; vertical-align: middle; }
table.links tr:last-child td { border-bottom: none; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
.truncate { max-width: 260px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.inline { display: inline-flex; gap: 6px; align-items: center; margin: 0; }
.mini { padding: 5px 8px; font-size: .82rem; width: 130px; }

.pill { display: inline-block; font-size: .7rem; font-weight: 700;
  padding: 2px 8px; border-radius: 999px; margin-right: 6px; letter-spacing: .03em; }
.pill-sub { background: rgba(124,92,255,.12); color: #6d4fd6; }
.pill-path { background: rgba(22,163,74,.12); color: var(--accent-dark); }

/* 提示条 */
.flashes { margin-bottom: 20px; display: flex; flex-direction: column; gap: 10px; }
.flash { padding: 11px 15px; border-radius: 10px; font-size: .9rem; border: 1px solid; }
.flash-error { background: rgba(220,38,38,.06); border-color: rgba(220,38,38,.3); color: #b91c1c; }
.flash-success { background: rgba(22,163,74,.07); border-color: rgba(22,163,74,.3); color: #15803d; }

/* 登录页 */
.auth-card { max-width: 380px; margin: 8vh auto 0; }

/* 居中页（404 等） */
.center { display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 24px; background: var(--bg); }
.interstitial { max-width: 460px; width: 100%; text-align: center; }
.interstitial h1 { font-size: 1.4rem; margin-top: 8px; }
.interstitial .big { font-size: 3.5rem; margin: 0; color: var(--accent); }

/* ============================== 手机端适配 ============================== */
@media (max-width: 640px) {
  /* 顶栏：紧凑排列 */
  .topbar { padding: 10px 14px; flex-wrap: wrap; gap: 8px; }
  .brand { font-size: 1.1rem; }
  .topbar nav { gap: 12px; flex-wrap: wrap; }
  .topbar nav a, .who { font-size: .88rem; }

  /* 版面：收窄留白 */
  .container { padding: 16px 12px 48px; }
  .grid { grid-template-columns: 1fr; gap: 14px; }
  .card { padding: 16px; border-radius: 12px; }

  /* 表单：触控友好 */
  .kind-toggle { grid-template-columns: 1fr; }
  input, select { padding: 13px 14px; font-size: 16px; }  /* 16px 防 iOS 自动放大 */
  .btn { width: 100%; align-self: stretch; padding: 14px; font-size: 1rem; }
  .btn-ghost, .btn-danger { padding: 10px 14px; font-size: .9rem; }
  .mini { width: 100%; }

  /* 表格 → 卡片列表 */
  table.links thead { display: none; }
  table.links, table.links tbody, table.links tr, table.links td { display: block; width: 100%; }
  table.links tr {
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 12px 14px;
    margin-bottom: 12px;
    background: #fff;
  }
  table.links tr:last-child { margin-bottom: 0; }
  table.links td { border: none; padding: 5px 0; }
  table.links td[data-label]::before {
    content: attr(data-label);
    display: block;
    font-size: .72rem;
    color: var(--muted);
    font-weight: 600;
    margin-bottom: 1px;
  }
  .num { text-align: left; }
  .truncate { max-width: none; white-space: normal; word-break: break-all; }
  .cell-actions { padding-top: 10px; }
  .cell-actions .btn-danger { width: 100%; }
  .actions { flex-direction: column; align-items: stretch; gap: 8px; }
  .actions .inline { display: flex; width: 100%; }
  .actions .inline input { flex: 1; }
  .actions .inline .btn-ghost, .actions .inline .btn-danger { flex-shrink: 0; }

  /* 登录页 */
  .auth-card { margin-top: 4vh; }
}