/* ==========================================================
   码付 PayGate —— 极简工具风样式
   设计原则：白底 + 单一主色 + 高信息密度 + 克制的动效
   ========================================================== */

:root {
  /* 色板 */
  --ink-900: #1f2329;
  --ink-700: #373c43;
  --ink-500: #646a73;
  --ink-400: #8f959e;
  --ink-300: #bbbfc4;
  --ink-200: #dee0e3;
  --ink-100: #eff0f1;
  --ink-50:  #f7f8fa;
  --white:   #ffffff;

  --primary:      #1f2329;
  --primary-hover:#000000;
  --accent:       #3370ff;
  --accent-soft:  #eaf1ff;

  --success: #00a870;
  --success-soft: #e6f7f0;
  --warn:    #ed7b2f;
  --warn-soft: #fff3e8;
  --danger:  #e34d59;
  --danger-soft: #ffecee;
  --info:    #3370ff;
  --info-soft: #eaf1ff;

  /* 尺度 */
  --radius-sm: 4px;
  --radius:    8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  --shadow-sm: 0 1px 2px rgba(31, 35, 41, .06);
  --shadow:    0 2px 8px rgba(31, 35, 41, .07);
  --shadow-lg: 0 8px 28px rgba(31, 35, 41, .10);

  --container: 1080px;
  --header-h: 60px;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
               "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
               "Liberation Mono", monospace;

  --transition: .18s cubic-bezier(.4, 0, .2, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink-900: #f5f6f7;
    --ink-700: #d6d8db;
    --ink-500: #9aa0a6;
    --ink-400: #7c8288;
    --ink-300: #5f656b;
    --ink-200: #3a3f45;
    --ink-100: #2b3036;
    --ink-50:  #21252a;
    --white:   #1a1e23;
    --primary: #f5f6f7;
    --primary-hover: #ffffff;
    --accent-soft: #1b2a4a;
    --success-soft: #14332a;
    --warn-soft: #3a2a1a;
    --danger-soft: #3a1f22;
    --info-soft: #1b2a4a;
    --shadow-sm: 0 1px 2px rgba(0,0,0,.3);
    --shadow:    0 2px 8px rgba(0,0,0,.35);
    --shadow-lg: 0 8px 28px rgba(0,0,0,.45);
  }
}

* { box-sizing: border-box; }

/* 关键：hidden 属性必须真正隐藏元素。
   .qr-mask / .success-panel 等类用了 display:flex，会覆盖 UA 样式表里的
   [hidden]{display:none}，导致「二维码已失效」遮罩即使带 hidden 也照常显示。 */
[hidden] { display: none !important; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-900);
  background: var(--ink-50);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; transition: var(--transition); }
a:hover { opacity: .8; }
code, .mono { font-family: var(--font-mono); font-size: .92em; }
img { max-width: 100%; display: block; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 20px; }

/* ---------------- 顶部导航 ---------------- */
.site-header {
  position: sticky; top: 0; z-index: 40;
  height: var(--header-h);
  background: color-mix(in srgb, var(--white) 88%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--ink-200);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); }

.brand { display: flex; align-items: center; gap: 9px; color: var(--ink-900); font-weight: 650; letter-spacing: -.2px; }
.brand:hover { opacity: 1; }
.brand-mark { color: var(--ink-900); display: flex; }
.brand-text { font-size: 15px; }

.site-nav { display: flex; align-items: center; gap: 4px; }
.site-nav a {
  color: var(--ink-500); padding: 7px 12px; border-radius: var(--radius-sm);
  font-size: 13.5px; transition: var(--transition);
}
.site-nav a:hover { color: var(--ink-900); background: var(--ink-100); opacity: 1; }
.site-nav a.active { color: var(--ink-900); font-weight: 550; background: var(--ink-100); }
.site-nav .nav-admin {
  margin-left: 8px; border: 1px solid var(--ink-200); color: var(--ink-700);
  background: var(--white);
}

/* ---------------- 主体 ---------------- */
.site-main { min-height: calc(100vh - var(--header-h) - 80px); }

.section { padding: 40px 0; }
.section-narrow { max-width: 640px; padding: 40px 20px 64px; margin: 0 auto; }
.section-head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 16px; margin-bottom: 20px; flex-wrap: wrap;
}
.section-head h2 { font-size: 17px; margin: 0; font-weight: 650; letter-spacing: -.2px; }

/* ---------------- Hero ---------------- */
.hero { padding: 72px 0 44px; text-align: center; }
.hero h1 {
  font-size: 40px; line-height: 1.25; margin: 18px 0 14px;
  font-weight: 700; letter-spacing: -1.2px;
}
.hero .lead {
  color: var(--ink-500); font-size: 15.5px; max-width: 620px; margin: 0 auto;
  line-height: 1.75;
}
.hero-actions { display: flex; gap: 12px; justify-content: center; margin-top: 30px; flex-wrap: wrap; }

.pill {
  display: inline-block; padding: 4px 12px; border-radius: 100px;
  background: var(--white); border: 1px solid var(--ink-200);
  color: var(--ink-500); font-size: 12.5px; letter-spacing: .2px;
}

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  padding: 9px 18px; border-radius: var(--radius); border: 1px solid transparent;
  font-size: 14px; font-weight: 520; font-family: inherit; cursor: pointer;
  transition: var(--transition); white-space: nowrap; text-align: center;
  background: var(--ink-100); color: var(--ink-900);
}
.btn:hover { opacity: 1; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }

.btn-primary { background: var(--primary); color: var(--white); }
.btn-primary:hover { background: var(--primary-hover); box-shadow: var(--shadow); }

.btn-ghost { background: var(--white); border-color: var(--ink-200); color: var(--ink-700); }
.btn-ghost:hover { border-color: var(--ink-400); }

.btn-danger { background: var(--danger); color: #fff; }
.btn-lg { padding: 12px 24px; font-size: 15px; border-radius: var(--radius); }
.btn-sm { padding: 5px 11px; font-size: 12.5px; border-radius: var(--radius-sm); }
.btn-block { width: 100%; }

.btn-copy {
  background: transparent; border: 1px solid var(--ink-200); color: var(--ink-500);
  border-radius: var(--radius-sm); padding: 2px 8px; font-size: 12px;
  cursor: pointer; font-family: inherit; transition: var(--transition);
}
.btn-copy:hover { color: var(--accent); border-color: var(--accent); }

.link { color: var(--accent); font-size: 13.5px; }

/* ---------------- 卡片 ---------------- */
.card {
  background: var(--white); border: 1px solid var(--ink-200);
  border-radius: var(--radius-lg); padding: 24px; box-shadow: var(--shadow-sm);
}
.card-title { font-size: 15px; margin: 0 0 16px; font-weight: 620; }

/* ---------------- 表单 ---------------- */
.form .field { margin-bottom: 22px; }
.form label { display: block; font-size: 13.5px; font-weight: 550; margin-bottom: 8px; color: var(--ink-700); }

input[type=text], input[type=number], input[type=password], input[type=email], select, textarea {
  width: 100%; padding: 10px 13px; border: 1px solid var(--ink-200);
  border-radius: var(--radius); background: var(--white); color: var(--ink-900);
  font-family: inherit; font-size: 14px; transition: var(--transition);
  appearance: none;
}
input:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 10%, transparent);
}
input::placeholder, textarea::placeholder { color: var(--ink-300); }
textarea { resize: vertical; min-height: 90px; font-family: var(--font-mono); font-size: 13px; }

.amount-input { position: relative; }
.amount-input .amount-symbol {
  position: absolute; left: 15px; top: 50%; transform: translateY(-50%);
  font-size: 21px; color: var(--ink-400); font-family: var(--font-mono);
}
.amount-input input {
  padding-left: 40px; font-size: 24px; font-family: var(--font-mono);
  font-weight: 600; height: 58px; letter-spacing: -.5px;
}
.hint { color: var(--ink-400); font-size: 12.5px; margin-top: 7px; }

.quick-amounts { display: flex; gap: 8px; margin-top: 12px; flex-wrap: wrap; }
.chip {
  padding: 6px 14px; border: 1px solid var(--ink-200); border-radius: 100px;
  background: var(--white); color: var(--ink-700); font-size: 13px;
  cursor: pointer; font-family: var(--font-mono); transition: var(--transition);
}
.chip:hover { border-color: var(--primary); color: var(--ink-900); }
.chip.active { background: var(--ink-900); color: var(--white); border-color: var(--ink-900); }
.chip-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }

/* 支付方式选择 */
.pay-options { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; }
.pay-option { margin: 0; cursor: pointer; }
.pay-option input { position: absolute; opacity: 0; pointer-events: none; }
.pay-option-box {
  display: flex; align-items: center; gap: 9px; padding: 13px 15px;
  border: 1px solid var(--ink-200); border-radius: var(--radius);
  background: var(--white); transition: var(--transition);
}
.pay-option input:checked + .pay-option-box {
  border-color: var(--pay-color, var(--primary));
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--pay-color, #000) 11%, transparent);
}
.pay-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--pay-color, var(--ink-400)); flex-shrink: 0; }
.pay-name { font-size: 13.5px; font-weight: 520; }

.search-bar { display: flex; gap: 10px; }
.search-bar input { flex: 1; }

/* ---------------- 统计 ---------------- */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 14px; }
.stat-card {
  background: var(--white); border: 1px solid var(--ink-200);
  border-radius: var(--radius-lg); padding: 20px; transition: var(--transition);
}
.stat-card:hover { box-shadow: var(--shadow); }
.stat-label { color: var(--ink-500); font-size: 12.5px; margin-bottom: 8px; }
.stat-value { font-size: 25px; font-weight: 680; font-family: var(--font-mono); letter-spacing: -1px; }

/* ---------------- 渠道卡 ---------------- */
.channel-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; }
.channel-card {
  display: flex; align-items: center; gap: 12px; padding: 16px 18px;
  background: var(--white); border: 1px solid var(--ink-200);
  border-radius: var(--radius); transition: var(--transition);
}
.channel-card:hover { border-color: var(--ink-300); }
.channel-dot { width: 11px; height: 11px; border-radius: 50%; }
.channel-name { font-size: 14px; font-weight: 550; }

/* ---------------- 流程图 ---------------- */
.flow { display: grid; gap: 10px; }
.flow-step {
  display: flex; gap: 15px; padding: 15px 18px; background: var(--white);
  border: 1px solid var(--ink-200); border-radius: var(--radius);
  transition: var(--transition);
}
.flow-step:hover { border-color: var(--ink-300); transform: translateX(2px); }
.flow-index {
  width: 26px; height: 26px; border-radius: 50%; background: var(--ink-900);
  color: var(--white); display: flex; align-items: center; justify-content: center;
  font-size: 12.5px; font-weight: 600; flex-shrink: 0; font-family: var(--font-mono);
}
.flow-body { flex: 1; min-width: 0; }
.flow-title { font-weight: 600; font-size: 14px; }
.flow-desc { color: var(--ink-500); font-size: 13px; margin-top: 2px; }
.flow-api {
  display: inline-block; margin-top: 7px; padding: 2px 8px;
  background: var(--ink-50); border: 1px solid var(--ink-200);
  border-radius: var(--radius-sm); font-size: 11.5px; color: var(--ink-500);
}

/* ---------------- 表格 ---------------- */
.table-wrap {
  background: var(--white); border: 1px solid var(--ink-200);
  border-radius: var(--radius-lg); overflow: auto;
}
.table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.table th {
  text-align: left; padding: 12px 16px; background: var(--ink-50);
  font-weight: 600; color: var(--ink-500); font-size: 12.5px;
  border-bottom: 1px solid var(--ink-200); white-space: nowrap;
}
.table td { padding: 13px 16px; border-bottom: 1px solid var(--ink-100); vertical-align: middle; }
.table tr:last-child td { border-bottom: none; }
.table tbody tr { transition: var(--transition); }
.table tbody tr:hover { background: var(--ink-50); }

/* ---------------- 徽标 ---------------- */
.badge {
  display: inline-block; padding: 2px 9px; border-radius: 100px;
  font-size: 12px; font-weight: 550; white-space: nowrap;
}
.badge-warn    { background: var(--warn-soft);    color: var(--warn); }
.badge-success { background: var(--success-soft); color: var(--success); }
.badge-info    { background: var(--info-soft);    color: var(--info); }
.badge-danger  { background: var(--danger-soft);  color: var(--danger); }
.badge-muted   { background: var(--ink-100);      color: var(--ink-500); }

/* ---------------- 提示块 ---------------- */
.notice {
  padding: 14px 16px; border-radius: var(--radius); font-size: 13.5px;
  border-left: 3px solid transparent; line-height: 1.7;
}
.notice p { margin: 6px 0 10px; color: var(--ink-500); }
.notice-info    { background: var(--info-soft);    border-left-color: var(--info); }
.notice-warn    { background: var(--warn-soft);    border-left-color: var(--warn); }
.notice-success { background: var(--success-soft); border-left-color: var(--success); }
.notice-danger  { background: var(--danger-soft);  border-left-color: var(--danger); }

/* ---------------- 收银台 ---------------- */
.cashier {
  background: var(--white); border: 1px solid var(--ink-200);
  border-radius: var(--radius-xl); padding: 34px 28px; box-shadow: var(--shadow);
  text-align: center;
}
.cashier-head { margin-bottom: 24px; }
.cashier-amount {
  font-size: 38px; font-weight: 700; font-family: var(--font-mono);
  letter-spacing: -1.8px; margin: 12px 0 4px;
}

.qr-panel {
  position: relative; display: inline-block; padding: 14px;
  background: #fff; border: 1px solid var(--ink-200); border-radius: var(--radius-lg);
}
.qr-img { width: 260px; height: 260px; border-radius: var(--radius-sm); }

/* 收款码原图（商户上传的微信/支付宝二维码截图）。
   ⚠️ 不能用 object-fit:cover —— 那会把图片裁掉，二维码一旦被裁就不完整、扫不出。
   contain 保证整张图完整可见；外面留白由 .qr-panel 的白底承担。
   ⚠️ 宽度也要放开 —— 只放开高度的话，787×1072 的竖图会被压进
   260px 宽的盒子里，码点小到很多手机相机对不上焦。宽高都放开后
   由 max-width / max-height 双重约束，既不变形也尽量大。 */
.qr-img-photo {
  object-fit: contain;
  background: #fff;
  width: auto;
  max-width: 100%;
  height: auto;
  max-height: 320px;
}
.qr-panel-photo { padding: 12px; }
.notice-warn { background: var(--warn-soft); border: 1px solid var(--warn); }
.notice-warn strong { color: var(--warn); }
.qr-mask {
  position: absolute; inset: 0; background: rgba(255,255,255,.94);
  border-radius: var(--radius-lg); display: flex; align-items: center; justify-content: center;
  backdrop-filter: blur(3px);
}
.qr-mask-inner { text-align: center; padding: 20px; }
.qr-mask-title { font-weight: 600; margin-bottom: 14px; color: var(--ink-700); }

.pay-channel-line {
  margin-top: 20px; display: flex; align-items: center; justify-content: center; gap: 8px;
  font-size: 13.5px; color: var(--ink-500);
}

.countdown {
  margin-top: 16px; display: inline-flex; align-items: center; gap: 9px;
  padding: 7px 16px; background: var(--ink-50); border: 1px solid var(--ink-200);
  border-radius: 100px; font-size: 13px;
}
.countdown-time { font-weight: 650; font-size: 15px; letter-spacing: -.5px; }
.countdown.urgent { background: var(--danger-soft); border-color: var(--danger); }
.countdown.urgent .countdown-time { color: var(--danger); }

.order-meta {
  margin-top: 26px; padding-top: 22px; border-top: 1px solid var(--ink-100); text-align: left;
}
.meta-row {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 9px 0; font-size: 13.5px;
}
.meta-row > span:first-child { color: var(--ink-500); flex-shrink: 0; }
.meta-row code { color: var(--ink-700); font-size: 12.5px; word-break: break-all; text-align: right; }

.success-panel { margin-top: 26px; padding-top: 26px; border-top: 1px solid var(--ink-100); }
.success-icon { display: flex; justify-content: center; margin-bottom: 14px; animation: popIn .4s cubic-bezier(.34,1.56,.64,1); }
.success-panel h2 { font-size: 21px; margin: 0 0 6px; }
.success-actions { display: flex; gap: 10px; justify-content: center; margin-top: 22px; flex-wrap: wrap; }

@keyframes popIn {
  0% { transform: scale(.5); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

.deliver-box {
  margin-top: 18px; padding: 16px; background: var(--success-soft);
  border: 1px dashed var(--success); border-radius: var(--radius); text-align: left;
}
.deliver-title { font-size: 12.5px; color: var(--success); font-weight: 600; margin-bottom: 8px; }
.deliver-content {
  display: block; padding: 10px 12px; background: var(--white);
  border-radius: var(--radius-sm); font-size: 13px; word-break: break-all;
  color: var(--ink-900); margin-bottom: 8px;
}

/* ---------------- 订单详情 ---------------- */
.page-head { margin-bottom: 26px; }
.page-head h1 { font-size: 24px; margin: 0 0 6px; letter-spacing: -.5px; }

.detail-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding-bottom: 18px; border-bottom: 1px solid var(--ink-100); margin-bottom: 18px;
}
.detail-list { margin: 0; display: grid; gap: 2px; }
.detail-list > div {
  display: flex; justify-content: space-between; gap: 16px;
  padding: 9px 0; border-bottom: 1px solid var(--ink-100);
}
.detail-list dt { color: var(--ink-500); font-size: 13.5px; }
.detail-list dd { margin: 0; text-align: right; font-size: 13.5px; word-break: break-all; }
.strong { font-weight: 650; }

/* 时间线 */
.timeline { list-style: none; margin: 0; padding: 0; }
.timeline li { display: flex; gap: 13px; padding: 11px 0; position: relative; }
.timeline li:not(:last-child)::before {
  content: ''; position: absolute; left: 4px; top: 26px; bottom: -6px;
  width: 1px; background: var(--ink-200);
}
.tl-dot {
  width: 9px; height: 9px; border-radius: 50%; background: var(--ink-900);
  margin-top: 7px; flex-shrink: 0; z-index: 1;
}
.tl-title { font-size: 13.5px; font-weight: 550; }
.tl-remark, .tl-time { line-height: 1.5; }

/* ---------------- 错误页 ---------------- */
.center-page { text-align: center; padding-top: 72px; }
.error-illustration { color: var(--ink-400); display: flex; justify-content: center; margin-bottom: 22px; }
.error-title { font-size: 22px; margin: 0 0 8px; }
.error-actions { display: flex; gap: 10px; justify-content: center; margin-top: 24px; }

/* ---------------- 空状态 ---------------- */
.empty {
  padding: 44px 20px; text-align: center; color: var(--ink-400);
  background: var(--white); border: 1px dashed var(--ink-200); border-radius: var(--radius-lg);
}

/* ---------------- 手机模拟框 ---------------- */
.body-blank { background: var(--ink-100); display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 24px; }
.phone-frame {
  width: 340px; background: var(--white); border-radius: 32px;
  box-shadow: var(--shadow-lg); overflow: hidden; border: 8px solid #2b3036;
}
.phone-status-bar {
  display: flex; justify-content: space-between; padding: 12px 20px 4px;
  font-size: 12px; color: var(--ink-500); font-weight: 600;
}
.phone-body { padding: 20px 24px 34px; text-align: center; }
.phone-merchant { font-size: 13px; color: var(--ink-500); }
.phone-amount { font-size: 34px; font-weight: 700; font-family: var(--font-mono); letter-spacing: -1.5px; margin: 8px 0 4px; }
.phone-subject { color: var(--ink-500); font-size: 13.5px; margin-bottom: 22px; }
.phone-paybox {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px; background: var(--ink-50); border-radius: var(--radius); font-size: 14px; font-weight: 550;
}
.phone-row {
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
  padding: 11px 0; border-bottom: 1px solid var(--ink-100); font-size: 13px;
}
.phone-row > span:first-child { color: var(--ink-500); }
.phone-result { margin-top: 18px; padding: 14px; border-radius: var(--radius); }
.phone-result.success { background: var(--success-soft); color: var(--success); }
.phone-result.error { background: var(--danger-soft); color: var(--danger); }
.result-title { font-weight: 650; font-size: 15px; margin-bottom: 2px; }

/* ---------------- 登录页 ---------------- */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 24px; }
.login-card {
  width: 100%; max-width: 380px; background: var(--white); border: 1px solid var(--ink-200);
  border-radius: var(--radius-xl); padding: 36px 32px; box-shadow: var(--shadow);
}
.login-logo { display: flex; justify-content: center; margin-bottom: 18px; color: var(--ink-900); }
.login-title { text-align: center; font-size: 19px; font-weight: 650; margin: 0 0 6px; }
.login-sub { text-align: center; color: var(--ink-500); font-size: 13px; margin: 0 0 26px; }

/* ---------------- 后台 ---------------- */
.admin-body { display: flex; min-height: 100vh; background: var(--ink-50); }
.admin-side {
  width: 216px; flex-shrink: 0; background: var(--white);
  border-right: 1px solid var(--ink-200); position: sticky; top: 0; height: 100vh;
  display: flex; flex-direction: column;
}
.admin-brand {
  height: 60px; display: flex; align-items: center; gap: 9px; padding: 0 20px;
  border-bottom: 1px solid var(--ink-200); font-weight: 650; color: var(--ink-900); font-size: 14.5px;
}
.admin-menu { padding: 14px 12px; flex: 1; overflow-y: auto; }
.admin-menu a {
  display: block; padding: 9px 14px; border-radius: var(--radius-sm);
  color: var(--ink-500); font-size: 13.5px; margin-bottom: 2px; transition: var(--transition);
}
.admin-menu a:hover { background: var(--ink-50); color: var(--ink-900); opacity: 1; }
.admin-menu a.active { background: var(--ink-900); color: var(--white); }
.admin-side-foot { padding: 14px; border-top: 1px solid var(--ink-200); font-size: 12.5px; color: var(--ink-400); }

.admin-main { flex: 1; min-width: 0; }
.admin-top {
  height: 60px; background: var(--white); border-bottom: 1px solid var(--ink-200);
  display: flex; align-items: center; justify-content: space-between; padding: 0 24px;
  position: sticky; top: 0; z-index: 30;
}
.admin-top h1 { font-size: 16px; margin: 0; font-weight: 620; }
.admin-top-right { display: flex; align-items: center; gap: 14px; font-size: 13px; color: var(--ink-500); }
.admin-content { padding: 24px; }

.admin-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; }

.pager { display: flex; gap: 6px; align-items: center; justify-content: center; margin-top: 20px; }
.pager a, .pager span {
  padding: 6px 12px; border: 1px solid var(--ink-200); border-radius: var(--radius-sm);
  background: var(--white); font-size: 13px; color: var(--ink-700);
}
.pager .current { background: var(--ink-900); color: var(--white); border-color: var(--ink-900); }
.pager .disabled { opacity: .4; }

.filter-tabs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 16px; }
.filter-tabs a {
  padding: 6px 13px; border: 1px solid var(--ink-200); border-radius: 100px;
  font-size: 13px; color: var(--ink-500); background: var(--white);
}
.filter-tabs a.active { background: var(--ink-900); color: var(--white); border-color: var(--ink-900); }

/* 迷你趋势图 */
.chart-bars { display: flex; align-items: flex-end; gap: 10px; height: 130px; padding: 10px 0; }
.chart-bar-item { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 6px; height: 100%; justify-content: flex-end; }
.chart-bar {
  width: 100%; max-width: 42px; background: var(--ink-900); border-radius: 5px 5px 0 0;
  min-height: 3px; transition: height .5s cubic-bezier(.4,0,.2,1);
}
.chart-bar-label { font-size: 11.5px; color: var(--ink-400); font-family: var(--font-mono); }

/* 文档代码块 */
.code-block {
  background: #1f2329; color: #e6e8eb; padding: 16px 18px; border-radius: var(--radius);
  overflow-x: auto; font-family: var(--font-mono); font-size: 12.5px; line-height: 1.75;
  margin: 14px 0;
}
.code-block .c-key { color: #79c0ff; }
.code-block .c-str { color: #a5d6ff; }
.code-block .c-cmt { color: #7c8288; }
.code-block .c-fn  { color: #d2a8ff; }

.doc-section { margin-bottom: 26px; }
.doc-section h3 { font-size: 15px; margin: 0 0 10px; }
.doc-table { width: 100%; border-collapse: collapse; font-size: 13px; margin: 12px 0; }
.doc-table th, .doc-table td { padding: 9px 12px; border: 1px solid var(--ink-200); text-align: left; }
.doc-table th { background: var(--ink-50); font-weight: 600; color: var(--ink-500); font-size: 12.5px; }
.doc-table td code { color: var(--accent); }

/* ---------------- 工具类 ---------------- */
.muted { color: var(--ink-500); }
.small { font-size: 12.5px; }
.center { text-align: center; }
.mt-8 { margin-top: 8px; } .mt-12 { margin-top: 12px; } .mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; } .mt-32 { margin-top: 32px; }
.flex-between { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.gap-8 { gap: 8px; }

/* ---------------- 页脚 ---------------- */
.site-footer { border-top: 1px solid var(--ink-200); background: var(--white); padding: 22px 0; margin-top: 40px; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 13px; }
.footer-inner strong { margin-right: 8px; }
.footer-links { display: flex; align-items: center; gap: 14px; }

/* ---------------- 响应式 ---------------- */
@media (max-width: 768px) {
  .hero { padding: 48px 0 32px; }
  .hero h1 { font-size: 28px; letter-spacing: -.8px; }
  .site-nav a { padding: 7px 9px; font-size: 13px; }
  .site-nav .nav-admin { display: none; }
  .cashier { padding: 26px 18px; }
  .cashier-amount { font-size: 32px; }
  .qr-img { width: 220px; height: 220px; }
  /* 收款码原图不受固定宽高限制 —— 同 .qr-img-photo 的说明 */
  .qr-img-photo { width: auto; max-width: 100%; height: auto; max-height: 300px; }
  .admin-side { position: fixed; left: -216px; z-index: 50; transition: left var(--transition); }
  .admin-side.open { left: 0; box-shadow: var(--shadow-lg); }
  .admin-content { padding: 16px; }
  .stat-value { font-size: 21px; }
  .section-head h2 { font-size: 16px; }
  .table { font-size: 12.5px; }
  .table th, .table td { padding: 10px 12px; }
}

@media (max-width: 420px) {
  .container { padding: 0 15px; }
  .brand-text { display: none; }
  .btn-lg { padding: 11px 18px; font-size: 14px; }
}

/* 打印 */
@media print {
  .site-header, .site-footer, .btn, .btn-copy { display: none !important; }
  body { background: #fff; }
}