/* =========================================================
   授权中心 · UI 样式（原创设计，无第三方框架）
   ========================================================= */
:root {
  --bg: #f5f7fb;
  --bg-soft: #eef2f9;
  --card: #ffffff;
  --text: #16203a;
  --muted: #6b7688;
  --line: #e6eaf2;
  --primary: #4f6ef7;
  --primary-2: #7c5cff;
  --primary-soft: #eef1ff;
  --success: #12a15c;
  --warning: #d98a00;
  --danger: #d64545;
  --radius: 18px;
  --shadow: 0 12px 40px rgba(22, 32, 58, .08);
  --shadow-sm: 0 4px 14px rgba(22, 32, 58, .06);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

html[data-theme="dark"] {
  --bg: #0d1220;
  --bg-soft: #121a2c;
  --card: #151d30;
  --text: #e8edf8;
  --muted: #93a0b8;
  --line: #24304a;
  --primary-soft: #1c2745;
  --shadow: 0 12px 40px rgba(0, 0, 0, .35);
  --shadow-sm: 0 4px 14px rgba(0, 0, 0, .25);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); text-decoration: none; }
a:hover { opacity: .85; }
img { max-width: 100%; }
code, pre { font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace; }

.container { width: min(1160px, 92%); margin: 0 auto; }
.container-narrow { width: min(860px, 92%); margin: 0 auto; }
.page { padding: 36px 0 64px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.mono { font-family: "SFMono-Regular", Consolas, monospace; }
.center { text-align: center; }
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 36px; }
.mb-0 { margin-bottom: 0; }
.flex { display: flex; }
.between { justify-content: space-between; }
.items-center { align-items: center; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }
.wrap { flex-wrap: wrap; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  border-bottom: 1px solid var(--line);
}
.site-header .inner { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 18px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 18px; color: var(--text); letter-spacing: .2px; }
.brand-mark {
  width: 34px; height: 34px; border-radius: 11px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  display: grid; place-items: center; color: #fff; font-size: 16px; font-weight: 900;
  box-shadow: 0 6px 16px rgba(79, 110, 247, .35);
}
.nav-links { display: flex; align-items: center; gap: 22px; }
.nav-links a { color: var(--muted); font-weight: 600; font-size: 14px; }
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-actions { display: flex; align-items: center; gap: 10px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  height: 42px; padding: 0 18px; border-radius: 12px; border: 1px solid transparent;
  background: var(--primary); color: #fff; font-size: 14px; font-weight: 700;
  cursor: pointer; transition: .18s ease; font-family: inherit; white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 8px 20px rgba(79, 110, 247, .28); opacity: 1; }
.btn:active { transform: translateY(0); }
.btn:disabled { opacity: .55; cursor: not-allowed; transform: none; box-shadow: none; }
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--primary-2)); }
.btn-ghost { background: transparent; border-color: var(--line); color: var(--text); }
.btn-soft { background: var(--primary-soft); color: var(--primary); }
.btn-danger { background: var(--danger); }
.btn-sm { height: 34px; padding: 0 12px; font-size: 13px; border-radius: 9px; }
.btn-block { width: 100%; }
.icon-btn {
  width: 38px; height: 38px; border-radius: 11px; border: 1px solid var(--line);
  background: var(--card); color: var(--text); cursor: pointer; display: grid; place-items: center;
  font-size: 16px;
}

/* ---------- 卡片 / 网格 ---------- */
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-sm); padding: 24px;
}
.card-tight { padding: 18px; }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; }
.card-title { font-size: 17px; font-weight: 800; margin: 0; }
.grid { display: grid; gap: 18px; }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* ---------- 首页 ---------- */
.hero {
  position: relative; overflow: hidden; padding: 82px 0 70px;
  background:
    radial-gradient(900px 420px at 12% -10%, rgba(124, 92, 255, .22), transparent 60%),
    radial-gradient(700px 360px at 88% 0%, rgba(79, 110, 247, .20), transparent 60%),
    var(--bg);
}
.hero::after {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(var(--line) 1px, transparent 1px);
  background-size: 26px 26px; opacity: .5; pointer-events: none;
  mask-image: linear-gradient(to bottom, #000 0%, transparent 85%);
}
.hero .inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1.1fr .9fr; gap: 54px; align-items: center; }
.pill {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 14px; border-radius: 999px;
  background: var(--primary-soft); color: var(--primary); font-size: 13px; font-weight: 700;
}
.hero h1 { font-size: clamp(30px, 4.2vw, 48px); line-height: 1.18; margin: 18px 0 16px; letter-spacing: -.5px; }
.hero h1 .grad { background: linear-gradient(120deg, var(--primary), var(--primary-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.lead { color: var(--muted); font-size: 16px; max-width: 520px; }
.hero-actions { display: flex; gap: 12px; margin-top: 26px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 28px; margin-top: 34px; flex-wrap: wrap; }
.hero-stats b { display: block; font-size: 24px; }
.hero-stats span { color: var(--muted); font-size: 13px; }

.terminal {
  background: #0d1426; color: #c8d4f0; border-radius: 20px; padding: 20px;
  box-shadow: 0 30px 70px rgba(13, 20, 38, .35); font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 12.5px; line-height: 1.9; border: 1px solid #1d2946;
}
.terminal .bar { display: flex; gap: 6px; margin-bottom: 14px; }
.terminal .bar i { width: 10px; height: 10px; border-radius: 50%; background: #32405f; display: block; }
.terminal .ok { color: #5be3a5; }
.terminal .key { color: #9db4ff; }
.terminal .warn { color: #ffcf70; }

.section { padding: 64px 0; }
.section-head { max-width: 640px; margin-bottom: 34px; }
.section-head h2 { font-size: 28px; margin: 0 0 10px; letter-spacing: -.3px; }
.section-head p { color: var(--muted); margin: 0; }

.plan { position: relative; display: flex; flex-direction: column; }
.plan.hot { border-color: color-mix(in srgb, var(--primary) 45%, var(--line)); box-shadow: 0 18px 46px rgba(79, 110, 247, .16); }
.plan .tag { position: absolute; top: -12px; right: 22px; background: linear-gradient(135deg, var(--primary), var(--primary-2)); color: #fff; font-size: 12px; font-weight: 800; padding: 4px 12px; border-radius: 999px; }
.plan h3 { margin: 0 0 6px; font-size: 20px; }
.plan .price { font-size: 34px; font-weight: 900; letter-spacing: -1px; margin: 14px 0 2px; }
.plan .price small { font-size: 14px; color: var(--muted); font-weight: 600; }
.plan ul { list-style: none; padding: 0; margin: 18px 0 24px; display: grid; gap: 10px; }
.plan li { color: var(--muted); font-size: 14px; display: flex; gap: 8px; align-items: flex-start; }
.plan li::before { content: "✓"; color: var(--success); font-weight: 800; }
.plan .btn { margin-top: auto; }

.feature-icon {
  width: 44px; height: 44px; border-radius: 13px; display: grid; place-items: center;
  background: var(--primary-soft); color: var(--primary); font-size: 20px; margin-bottom: 14px;
}
.steps { counter-reset: step; display: grid; gap: 16px; }
.step { display: flex; gap: 16px; align-items: flex-start; }
.step::before {
  counter-increment: step; content: counter(step);
  width: 34px; height: 34px; flex: 0 0 34px; border-radius: 50%;
  background: var(--primary-soft); color: var(--primary); font-weight: 800;
  display: grid; place-items: center;
}

/* ---------- 表单 ---------- */
.form-row { margin-bottom: 16px; }
label { display: block; font-size: 13px; font-weight: 700; margin-bottom: 6px; }
.input, select, textarea {
  width: 100%; min-height: 44px; padding: 10px 14px; border-radius: 12px;
  border: 1px solid var(--line); background: var(--bg); color: var(--text);
  font-family: inherit; font-size: 14px; outline: none; transition: .15s;
}
.input:focus, select:focus, textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 16%, transparent); }
textarea { min-height: 110px; resize: vertical; }
.help { font-size: 12px; color: var(--muted); margin-top: 6px; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 18px; }
.form-grid .full { grid-column: 1 / -1; }

.alert { padding: 12px 16px; border-radius: 12px; font-size: 14px; margin-bottom: 16px; border: 1px solid transparent; }
.alert-success { background: color-mix(in srgb, var(--success) 10%, var(--card)); color: var(--success); border-color: color-mix(in srgb, var(--success) 28%, transparent); }
.alert-error { background: color-mix(in srgb, var(--danger) 10%, var(--card)); color: var(--danger); border-color: color-mix(in srgb, var(--danger) 28%, transparent); }
.alert-info { background: var(--primary-soft); color: var(--primary); }
.alert-warning { background: color-mix(in srgb, var(--warning) 12%, var(--card)); color: var(--warning); border-color: color-mix(in srgb, var(--warning) 30%, transparent); }

/* ---------- 表格 ---------- */
.table-wrap { overflow-x: auto; }
table.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th, .table td { padding: 12px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: middle; white-space: nowrap; }
.table th { color: var(--muted); font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .4px; }
.table tr:last-child td { border-bottom: none; }
.table .num { font-variant-numeric: tabular-nums; }
.table-scroll { overflow-x: auto; }

/* ---------- 徽标 ---------- */
.badge { display: inline-flex; align-items: center; gap: 4px; padding: 2px 9px; border-radius: 999px; font-size: 12px; font-weight: 700; background: var(--bg-soft); color: var(--muted); }
.badge-success { background: color-mix(in srgb, var(--success) 12%, transparent); color: var(--success); }
.badge-warning { background: color-mix(in srgb, var(--warning) 14%, transparent); color: var(--warning); }
.badge-danger { background: color-mix(in srgb, var(--danger) 12%, transparent); color: var(--danger); }
.badge-primary { background: var(--primary-soft); color: var(--primary); }

/* ---------- 控制台 ---------- */
.dash-grid { display: grid; grid-template-columns: 280px minmax(0, 1fr); gap: 22px; align-items: start; }
.profile-card { text-align: center; }
.avatar {
  width: 64px; height: 64px; border-radius: 20px; margin: 0 auto 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2)); color: #fff;
  display: grid; place-items: center; font-size: 24px; font-weight: 800;
}
.license-card { display: grid; gap: 12px; }
.license-top { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }
.key-box {
  font-family: "SFMono-Regular", Consolas, monospace; background: var(--bg-soft);
  border: 1px dashed var(--line); border-radius: 10px; padding: 10px 12px; font-size: 13px;
  display: flex; justify-content: space-between; align-items: center; gap: 10px; word-break: break-all;
}
.secret-once { border-color: color-mix(in srgb, var(--warning) 50%, transparent); background: color-mix(in srgb, var(--warning) 8%, var(--card)); }
.progress { height: 6px; border-radius: 99px; background: var(--bg-soft); overflow: hidden; }
.progress i { display: block; height: 100%; background: linear-gradient(90deg, var(--primary), var(--primary-2)); }
.empty { padding: 44px 20px; text-align: center; color: var(--muted); }
.empty .big { font-size: 40px; margin-bottom: 8px; opacity: .35; }

/* ---------- 支付 ---------- */
.pay-grid { display: grid; grid-template-columns: 340px minmax(0, 1fr); gap: 24px; }
.qr-panel { text-align: center; }
.qr-box {
  width: 240px; height: 240px; margin: 0 auto; padding: 12px; background: #fff;
  border-radius: 16px; border: 1px solid var(--line); display: grid; place-items: center;
}
.qr-box canvas, .qr-box img { display: block; width: 100% !important; height: auto !important; }
.qr-placeholder { color: #8a93a6; font-size: 13px; }
.pay-status { margin-top: 14px; font-weight: 700; }
.pay-amount { font-size: 40px; font-weight: 900; letter-spacing: -1px; margin: 10px 0; }
.order-meta { display: grid; grid-template-columns: 120px 1fr; gap: 10px 14px; font-size: 14px; }
.order-meta dt { color: var(--muted); }
.order-meta dd { margin: 0; word-break: break-all; }

/* ---------- 后台 ---------- */
.admin-shell { display: grid; grid-template-columns: 232px minmax(0, 1fr); min-height: 100vh; }
.admin-side {
  background: #0f1728; color: #b9c6e0; padding: 22px 16px; position: sticky; top: 0; height: 100vh;
  display: flex; flex-direction: column; gap: 6px;
}
.admin-side .brand { color: #fff; margin-bottom: 18px; padding: 0 8px; }
.admin-side a { color: #9fb0cc; padding: 10px 12px; border-radius: 10px; font-size: 14px; font-weight: 600; display: block; }
.admin-side a:hover { background: rgba(255, 255, 255, .06); color: #fff; opacity: 1; }
.admin-side a.active { background: linear-gradient(135deg, var(--primary), var(--primary-2)); color: #fff; }
.admin-side .spacer { flex: 1; }
.admin-main { padding: 28px 30px 60px; background: var(--bg); min-height: 100vh; }
.admin-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 22px; gap: 14px; flex-wrap: wrap; }
.admin-top h1 { font-size: 22px; margin: 0; }
.stat-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 16px 18px; }
.stat b { font-size: 24px; display: block; letter-spacing: -.5px; }
.stat span { color: var(--muted); font-size: 12px; }

/* ---------- 页脚 ---------- */
.site-footer { border-top: 1px solid var(--line); padding: 30px 0 42px; color: var(--muted); font-size: 13px; }
.site-footer .inner { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; align-items: center; }
.footer-links { display: flex; gap: 18px; }
.footer-links a { color: var(--muted); }

/* ---------- 提示浮层 ---------- */
.toast-wrap { position: fixed; right: 20px; top: 82px; z-index: 90; display: grid; gap: 10px; max-width: 360px; }
.toast { background: var(--card); color: var(--text); border: 1px solid var(--line); border-left: 4px solid var(--primary); border-radius: 12px; padding: 12px 16px; box-shadow: var(--shadow); font-size: 14px; animation: slideIn .25s ease; }
.toast.success { border-left-color: var(--success); }
.toast.error { border-left-color: var(--danger); }
@keyframes slideIn { from { transform: translateX(20px); opacity: 0; } to { transform: none; opacity: 1; } }

/* ---------- 其他 ---------- */
.divider { height: 1px; background: var(--line); margin: 20px 0; }
.copy-btn { background: transparent; border: 1px solid var(--line); color: var(--muted); border-radius: 8px; padding: 3px 9px; font-size: 12px; cursor: pointer; }
.loading-dots::after { content: "…"; animation: dots 1.2s infinite steps(4); }
@keyframes dots { 0% { opacity: .2; } 50% { opacity: 1; } 100% { opacity: .2; } }

@media (max-width: 980px) {
  .hero .inner { grid-template-columns: 1fr; gap: 30px; }
  .grid-3, .grid-4, .stat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .dash-grid { grid-template-columns: 1fr; }
  .pay-grid { grid-template-columns: 1fr; }
  .admin-shell { grid-template-columns: 1fr; }
  .admin-side { position: static; height: auto; flex-direction: row; flex-wrap: wrap; align-items: center; }
  .admin-side .brand { margin-bottom: 0; }
  .admin-side .spacer { display: none; }
  .nav-links { display: none; }
}

@media (max-width: 640px) {
  .grid-3, .grid-4, .grid-2, .stat-grid, .form-grid { grid-template-columns: 1fr; }
  .hero { padding: 52px 0 44px; }
  .page { padding: 24px 0 44px; }
  .card { padding: 18px; }
  .admin-main { padding: 20px 16px 50px; }
  .table th, .table td { padding: 10px 8px; }
}