:root {
  --primary: #4f46e5;
  --primary-dark: #4338ca;
  --bg: #f5f6fa;
  --card: #ffffff;
  --text: #1f2333;
  --muted: #8a90a5;
  --border: #e6e8f0;
  --danger: #e5484d;
  --success: #22a06b;
  --radius: 12px;
  --shadow: 0 2px 10px rgba(31, 35, 51, 0.06);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

code {
  background: #eef0f7;
  border-radius: 4px;
  padding: 2px 6px;
  font-size: 0.9em;
  color: #4338ca;
}

.container { max-width: 1080px; margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.brand { font-size: 1.25rem; font-weight: 700; color: var(--primary); }
.brand:hover { text-decoration: none; }

.nav { display: flex; align-items: center; gap: 18px; }
.nav a { color: var(--text); font-size: 0.95rem; }
.nav a:hover { color: var(--primary); }
.nav .nav-link-muted { color: var(--muted); }
.btn-nav {
  background: var(--primary);
  color: #fff !important;
  padding: 7px 16px;
  border-radius: 8px;
}
.btn-nav:hover { background: var(--primary-dark); text-decoration: none; }

.main { padding: 32px 20px; min-height: calc(100vh - 150px); }

/* Buttons */
.btn {
  display: inline-block;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 9px 18px;
  font-size: 0.95rem;
  cursor: pointer;
  text-align: center;
  transition: all 0.15s;
  background: #fff;
  color: var(--text);
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-outline { border-color: var(--border); color: var(--text); background: #fff; }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #c9363b; }
.btn-block { width: 100%; }
.btn-lg { padding: 13px 28px; font-size: 1.05rem; border-radius: 10px; }
.btn-sm { padding: 4px 10px; font-size: 0.82rem; border-radius: 6px; }

/* Alerts */
.alert {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 20px;
  font-size: 0.95rem;
}
.alert-error { background: #fdecec; color: #b42318; border: 1px solid #f5b7b3; }
.alert-success { background: #e8f7f0; color: #0d7a4c; border: 1px solid #b6e6cf; }

/* Cards */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 768px) { .cards { grid-template-columns: 1fr; } }
.card { padding: 24px; }
.card h3 { margin: 0 0 8px; font-size: 1.05rem; }
.card p { margin: 0; color: #555a70; font-size: 0.95rem; }
.card-icon {
  width: 38px; height: 38px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; margin-bottom: 12px;
}

/* Hero */
.hero {
  background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
  color: #fff;
  text-align: center;
  padding: 70px 20px 60px;
  border-radius: 16px;
  margin-bottom: 40px;
}
.hero h1 { font-size: 2.4rem; margin: 0 0 16px; }
.hero-sub { max-width: 640px; margin: 0 auto 28px; font-size: 1.05rem; opacity: 0.92; }
.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn-outline.hero { border-color: #fff; color: #fff; }

.section { margin-bottom: 40px; }
.section-title { font-size: 1.5rem; margin-bottom: 20px; }

.demo-box {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
}
.demo-box p { margin: 6px 0; }

/* Auth */
.auth-box { max-width: 420px; margin: 20px auto; }
.auth-box h2 { margin-top: 0; }

/* Forms */
.form-group { margin-bottom: 18px; }
.form-group label { display: block; margin-bottom: 6px; font-weight: 600; font-size: 0.92rem; }
.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="url"],
.form-group input[type="password"] {
  width: 100%;
  padding: 11px 13px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.98rem;
  background: #fbfbfd;
}
.form-group input:focus { outline: none; border-color: var(--primary); background: #fff; }
.form-actions { display: flex; gap: 12px; }
.text-center { text-align: center; }
.muted { color: var(--muted); }
.small { font-size: 0.85rem; }

/* Page head */
.page-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
}
.page-head h2 { margin: 0; font-size: 1.4rem; }

/* Table */
.table-wrap { overflow-x: auto; padding: 0; }
.table { width: 100%; border-collapse: collapse; min-width: 820px; }
.table th, .table td { padding: 13px 14px; text-align: left; border-bottom: 1px solid var(--border); font-size: 0.92rem; }
.table th { background: #f8f9fc; font-weight: 600; color: #555a70; }
.table tr:last-child td { border-bottom: none; }
.text-center { text-align: center; }
.cell-url { max-width: 240px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.short-link { margin-top: 3px; font-size: 0.82rem; color: var(--muted); }
.short-link a { color: var(--muted); }

.badge { display: inline-block; padding: 3px 10px; border-radius: 20px; font-size: 0.78rem; }
.badge-on { background: #e8f7f0; color: #0d7a4c; }
.badge-off { background: #fdecec; color: #b42318; }
.badge-block { background: #fff4e5; color: #b25e00; }
.cnt {
  display: inline-block;
  min-width: 16px;
  margin-left: 4px;
  padding: 0 5px;
  border-radius: 9px;
  background: var(--primary);
  color: #fff;
  font-size: 0.72rem;
  line-height: 16px;
  text-align: center;
}
.block-title { margin: 0 0 16px; font-size: 1.05rem; }

.row-actions { display: flex; gap: 6px; align-items: center; }
.inline-form { display: inline; margin: 0; }

/* Pagination：上一页 / 下一页 / 指定页 */
.pager {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 24px;
  flex-wrap: wrap;
}
.page-link {
  padding: 7px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  font-size: 0.9rem;
}
.page-link:hover { text-decoration: none; border-color: var(--primary); color: var(--primary); }
.page-link.disabled {
  color: #c3c7d3;
  background: #f7f8fb;
  border-color: #eef0f5;
  cursor: not-allowed;
}
.page-link.disabled:hover { border-color: #eef0f5; color: #c3c7d3; }
.page-info { font-size: 0.9rem; color: #555a70; }
.page-info strong { color: var(--primary); }
.page-jump { display: flex; align-items: center; gap: 6px; margin: 0; }
.page-input {
  width: 68px;
  padding: 7px 8px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  font-size: 0.9rem;
  text-align: center;
}
.page-input:focus { outline: none; border-color: var(--primary); }

/* Empty */
.empty-box { text-align: center; padding: 60px 20px; }
.empty-box p { margin: 0 0 18px; color: var(--muted); }

/* Result */
.result-box { text-align: center; }
.success-txt { font-size: 1.15rem; font-weight: 600; color: var(--success); }
.copy-row { display: flex; gap: 8px; }
.copy-row input { flex: 1; }

/* Profile tabs */
.profile-tabs { display: flex; gap: 10px; margin-bottom: 20px; }
.tab {
  padding: 8px 18px;
  border-radius: 8px;
  background: #fff;
  border: 1px solid var(--border);
  color: var(--text);
}
.tab.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.tab:hover { text-decoration: none; }

/* Stats */
.stats-cards { grid-template-columns: repeat(5, 1fr); margin-bottom: 20px; }
@media (max-width: 768px) { .stats-cards { grid-template-columns: repeat(2, 1fr); } }
.stat-card { text-align: center; padding: 18px 12px; }
.stat-num { font-size: 1.9rem; font-weight: 700; color: var(--primary); }
.stat-label { font-size: 0.85rem; color: var(--muted); margin-top: 4px; }
.stat-ip { font-size: 1.1rem; word-break: break-all; padding-top: 8px; }
.stat-date { font-size: 1.15rem; padding-top: 7px; }

/* 可点击的统计卡片 */
.stat-card-link { display: block; color: inherit; text-decoration: none; transition: all 0.15s; }
.stat-card-link:hover {
  text-decoration: none;
  border-color: var(--primary);
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.16);
  transform: translateY(-2px);
}
.stat-card-link .arrow { color: var(--primary); font-weight: 700; }
.stat-card-link:hover .stat-label { color: var(--primary); }
.top-refs { margin-bottom: 20px; }
.top-refs h3 { margin: 0 0 12px; font-size: 1rem; }
.top-refs ul { margin: 0; padding: 0; list-style: none; }
.top-refs li { display: flex; justify-content: space-between; padding: 7px 0; border-bottom: 1px dashed var(--border); font-size: 0.92rem; }
.top-refs li:last-child { border-bottom: none; }

/* 默认落地页 */
.badge-info { background: #e8f0fe; color: #1a56db; }
.page-body { background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%); min-height: 100vh; display: flex; align-items: center; justify-content: center; }
.landing-wrap { padding: 24px; width: 100%; }
.landing-card {
  max-width: 520px;
  margin: 0 auto;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.25);
  padding: 44px 36px;
  text-align: center;
}
.landing-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px; height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, #4f46e5, #7c3aed);
  color: #fff;
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: 0.5px;
  margin-bottom: 18px;
}
.landing-code {
  display: inline-block;
  background: #eef0f7;
  color: #4338ca;
  border-radius: 20px;
  padding: 5px 16px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.92rem;
  margin-bottom: 16px;
}
.landing-card h1 { margin: 0 0 14px; font-size: 1.7rem; }
.landing-remark { color: #555a70; margin: 0 0 10px; }
.landing-note { color: #8a90a5; font-size: 0.9rem; margin: 0 0 14px; }

/* 后台管理 */
.nav-admin { color: #b25e00 !important; font-weight: 600; }
.admin-stats { grid-template-columns: repeat(6, 1fr); }
@media (max-width: 900px) { .admin-stats { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 560px) { .admin-stats { grid-template-columns: repeat(2, 1fr); } }
.admin-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 20px; }
@media (max-width: 860px) { .admin-cols { grid-template-columns: 1fr; } }
.card-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.card-head h3 { margin: 0; font-size: 1.05rem; }
.kv-table th { width: 90px; color: #555a70; font-weight: 600; background: transparent; }
.kv-table td, .kv-table th { border-bottom: 1px solid var(--border); }
.mini-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.mini-stat { text-align: center; padding: 10px 6px; background: #f8f9fc; border-radius: 10px; }
.mini-stat .n { display: block; font-size: 1.4rem; font-weight: 700; color: var(--primary); }
.mini-stat .l { font-size: 0.8rem; color: var(--muted); }
.admin-forms { display: flex; flex-direction: column; gap: 18px; }
.fld-label { display: block; font-size: 0.9rem; font-weight: 600; margin-bottom: 6px; }
.fld-row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.fld-row input[type="text"], .fld-row input[type="email"] {
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.92rem;
  background: #fbfbfd;
  min-width: 240px;
}
.fld-row input:focus { outline: none; border-color: var(--primary); background: #fff; }
.search-form { display: flex; gap: 8px; align-items: center; }
.search-form input {
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.92rem;
  background: #fff;
  min-width: 220px;
}
.search-form input:focus { outline: none; border-color: var(--primary); }
.admin-login-card { max-width: 420px; }
.admin-login-card h1 { font-size: 1.4rem; margin: 0 0 6px; }
.login-form { text-align: left; margin-top: 20px; }
.mini-input {
  padding: 6px 9px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.85rem;
  background: #fbfbfd;
  width: 130px;
}
.mini-input:focus { outline: none; border-color: var(--primary); }
.danger-zone { border-color: #f5b7b3; margin-top: 20px; }
.danger-zone .block-title { color: #b42318; }
.danger-zone .alert { margin-bottom: 16px; }

/* Footer */
.site-footer {
  background: #fff;
  border-top: 1px solid var(--border);
  text-align: center;
  padding: 24px 20px;
  font-size: 0.9rem;
  color: #555a70;
}