:root {
  --bg: #0b0d12;
  --bg2: #12151d;
  --card: #161a24;
  --card2: #1c2130;
  --line: #262c3b;
  --text: #e8ecf4;
  --muted: #8d96ab;
  --brand: #2ee6a8;
  --brand2: #14b8ff;
  --warn: #ffb545;
  --err: #ff5c6c;
  --ok: #2ee6a8;
  --radius: 14px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: radial-gradient(1200px 600px at 50% -200px, #16233a 0%, var(--bg) 60%) no-repeat, var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
}
a { color: var(--brand2); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { width: 100%; max-width: 1080px; margin: 0 auto; padding: 0 18px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.center { text-align: center; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace; }
.hidden { display: none !important; }

.topbar { border-bottom: 1px solid var(--line); background: rgba(11,13,18,.85); backdrop-filter: blur(8px); position: sticky; top: 0; z-index: 20; }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; font-size: 17px; }
.brand:hover { text-decoration: none; }
.brand-dot { width: 10px; height: 10px; border-radius: 50%; background: linear-gradient(135deg, var(--brand), var(--brand2)); box-shadow: 0 0 12px rgba(46,230,168,.7); }
.nav { display: flex; gap: 18px; align-items: center; font-size: 14px; }
.nav a { color: var(--muted); }
.nav a:hover { color: var(--text); text-decoration: none; }
.nav-admin { opacity: .55; font-size: 13px; }
.notice { background: linear-gradient(90deg, rgba(46,230,168,.12), rgba(20,184,255,.12)); border-bottom: 1px solid var(--line); font-size: 14px; padding: 9px 0; color: #d6f7ea; }
.main { padding: 26px 0 60px; }

.hero { padding: 12px 0 22px; }
.hero h1 { margin: 0 0 6px; font-size: 26px; letter-spacing: .3px; }
.filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 20px; }
.chip { padding: 6px 14px; border-radius: 999px; border: 1px solid var(--line); background: var(--card); color: var(--muted); font-size: 14px; }
.chip:hover { text-decoration: none; color: var(--text); border-color: #39425a; }
.chip-on { background: linear-gradient(135deg, rgba(46,230,168,.16), rgba(20,184,255,.16)); border-color: rgba(46,230,168,.5); color: var(--text); }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(258px, 1fr)); gap: 14px; }
.card { display: block; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); color: var(--text); transition: .16s; overflow: hidden; }
.card:hover { text-decoration: none; transform: translateY(-2px); border-color: #3a4560; box-shadow: 0 10px 28px rgba(0,0,0,.35); }
.card-out { opacity: .6; }
.card-body { padding: 16px; }
.card-title { margin: 0 0 6px; font-size: 16px; font-weight: 650; line-height: 1.45; }
.card-sub { margin: 0 0 14px; color: var(--muted); font-size: 13px; min-height: 20px; }
.card-foot { display: flex; align-items: flex-end; justify-content: space-between; gap: 10px; }
.price-num { font-size: 22px; font-weight: 750; color: var(--brand); letter-spacing: .5px; }
.price-unit { font-size: 12px; color: var(--muted); margin-left: 4px; }
.badge { display: inline-block; padding: 3px 9px; border-radius: 999px; font-size: 12px; background: var(--card2); border: 1px solid var(--line); color: var(--muted); }
.badge-out { color: var(--err); border-color: rgba(255,92,108,.4); background: rgba(255,92,108,.08); }
.empty { text-align: center; padding: 70px 0; color: var(--muted); }

.crumb { margin-bottom: 16px; font-size: 14px; }
.detail { display: grid; grid-template-columns: 1fr 330px; gap: 22px; align-items: start; }
.detail-main h1 { margin: 0 0 6px; font-size: 24px; }
.detail-price { display: flex; align-items: center; gap: 12px; margin: 16px 0; }
.detail-price .price-num { font-size: 30px; }
.detail-desc { margin-top: 22px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
.detail-desc h3 { margin: 0 0 10px; font-size: 15px; color: var(--muted); font-weight: 600; }
.desc-text { margin: 0; white-space: pre-wrap; word-break: break-word; font-family: inherit; font-size: 14.5px; color: #cdd6e5; }
.detail-buy { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; position: sticky; top: 80px; }
.detail-buy h3 { margin: 0 0 14px; font-size: 16px; }
.field { display: block; margin-bottom: 12px; }
.field span { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.field input, .field select, input[type=text], input[type=password], input[type=number], select, textarea {
  width: 100%; padding: 9px 11px; background: var(--bg2); border: 1px solid var(--line); border-radius: 10px;
  color: var(--text); font-size: 14px; font-family: inherit; outline: none;
}
input:focus, select:focus, textarea:focus { border-color: rgba(46,230,168,.6); }
.total { margin: 14px 0; font-size: 14px; color: var(--muted); }
.total strong { font-size: 20px; color: var(--brand); }
.btn { display: inline-block; width: 100%; padding: 11px 16px; border: 0; border-radius: 10px; cursor: pointer;
  background: linear-gradient(135deg, var(--brand), var(--brand2)); color: #06231b; font-size: 15px; font-weight: 700; font-family: inherit; }
.btn:hover { filter: brightness(1.08); }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn-disabled { background: var(--card2); color: var(--muted); }
.btn-ghost { background: var(--card2); border: 1px solid var(--line); color: var(--text); font-weight: 600; width: auto; }
.btn-ghost:hover { border-color: #3a4560; }
.btn-copy { padding: 4px 10px; border-radius: 8px; border: 1px solid var(--line); background: var(--card2);
  color: var(--muted); cursor: pointer; font-size: 12px; font-family: inherit; }
.btn-copy:hover { color: var(--text); }
.hint { margin-top: 16px; padding: 12px 14px; border-radius: 10px; background: rgba(255,181,69,.08); border: 1px solid rgba(255,181,69,.3); color: #ffd79a; font-size: 13.5px; }

.order { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.order-head { display: flex; justify-content: space-between; align-items: center; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.order-no { font-size: 17px; letter-spacing: .5px; }
.status { padding: 5px 14px; border-radius: 999px; font-size: 13.5px; font-weight: 600; border: 1px solid var(--line); background: var(--card2); }
.st-pending { color: var(--warn); border-color: rgba(255,181,69,.4); background: rgba(255,181,69,.1); }
.st-ok { color: var(--ok); border-color: rgba(46,230,168,.4); background: rgba(46,230,168,.1); }
.st-warn { color: var(--err); border-color: rgba(255,92,108,.4); background: rgba(255,92,108,.08); }
.order-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; padding: 16px 0; }
.order-item .small { margin-bottom: 2px; }
.pay { display: grid; grid-template-columns: 1fr 260px; gap: 24px; padding-top: 6px; }
.amount-block, .addr-block { background: var(--bg2); border: 1px solid var(--line); border-radius: 12px; padding: 14px; margin-bottom: 14px; }
.amount { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; margin: 6px 0; }
.amount #amountText { font-size: 30px; font-weight: 800; color: var(--brand); letter-spacing: .5px; font-family: ui-monospace, Menlo, Consolas, monospace; }
.amount-unit { color: var(--muted); font-size: 14px; }
.addr { word-break: break-all; font-size: 14px; margin: 6px 0 10px; color: #cfe9ff; }
.countdown { margin: 16px 0; font-size: 15px; }
.countdown strong { color: var(--warn); font-size: 19px; font-family: ui-monospace, Menlo, Consolas, monospace; }
.pay-actions { margin-top: 10px; }
.qr-box { text-align: center; }
.qr-frame { background: #fff; padding: 10px; border-radius: 12px; display: inline-block; line-height: 0; }
.qr-frame svg { width: 100%; height: auto; max-width: 220px; display: block; }
.qr-switch { display: inline-block; margin-top: 10px; font-size: 13px; }
.keys { margin-top: 8px; }
.key-row { display: flex; align-items: center; gap: 10px; background: var(--bg2); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; margin-bottom: 8px; }
.key-idx { color: var(--muted); font-size: 12px; min-width: 18px; }
.key-code { flex: 1; word-break: break-all; font-size: 14px; color: var(--brand); }
.alert { padding: 13px 15px; border-radius: 11px; margin: 14px 0; font-size: 14px; }
.alert-ok { background: rgba(46,230,168,.1); border: 1px solid rgba(46,230,168,.35); color: #b6ffe4; }
.alert-warn { background: rgba(255,181,69,.09); border: 1px solid rgba(255,181,69,.32); color: #ffdca8; }
.alert-error { background: rgba(255,92,108,.1); border: 1px solid rgba(255,92,108,.35); color: #ffc3c9; }
.txline { margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--line); }
.doc { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.doc h1 { margin-top: 0; font-size: 22px; }
.doc h2 { font-size: 17px; margin-top: 26px; }
.doc li { margin-bottom: 7px; color: #cdd6e5; }
.footer { border-top: 1px solid var(--line); padding: 22px 0 34px; color: var(--muted); font-size: 13px; }
.footer div { margin-bottom: 4px; }

/* ---------------- 后台 ---------------- */
.admin-body { background: var(--bg); }
.login-box { max-width: 380px; margin: 12vh auto; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.login-box h1 { margin: 0 0 18px; font-size: 20px; }
.admin-layout { display: grid; grid-template-columns: 190px 1fr; min-height: 100vh; }
.admin-side { background: var(--bg2); border-right: 1px solid var(--line); padding: 18px 12px; }
.admin-side .brand { margin-bottom: 20px; font-size: 15px; }
.admin-side nav { display: flex; flex-direction: column; gap: 3px; }
.admin-side nav a { padding: 9px 12px; border-radius: 9px; color: var(--muted); font-size: 14px; }
.admin-side nav a:hover { background: var(--card); text-decoration: none; color: var(--text); }
.admin-side nav a.on { background: linear-gradient(135deg, rgba(46,230,168,.15), rgba(20,184,255,.15)); color: var(--text); }
.admin-main { padding: 22px 26px 60px; max-width: 1240px; }
.admin-main h2 { font-size: 19px; margin: 0 0 18px; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.stats { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 12px; margin-bottom: 22px; }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; }
.stat .k { font-size: 12.5px; color: var(--muted); }
.stat .v { font-size: 22px; font-weight: 750; margin-top: 4px; }
.panel { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; margin-bottom: 18px; }
.panel h3 { margin: 0 0 14px; font-size: 15.5px; }
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--line); vertical-align: middle; }
th { color: var(--muted); font-weight: 600; font-size: 12.5px; white-space: nowrap; }
tbody tr:hover { background: rgba(255,255,255,.02); }
.tbl-wrap { overflow-x: auto; }
.row-actions { display: flex; gap: 6px; flex-wrap: wrap; }
.btn-xs { padding: 4px 9px; border-radius: 7px; border: 1px solid var(--line); background: var(--card2); color: var(--text); font-size: 12px; cursor: pointer; font-family: inherit; }
.btn-xs:hover { border-color: #46536f; }
.btn-xs.primary { background: linear-gradient(135deg, var(--brand), var(--brand2)); color: #06231b; border: 0; font-weight: 700; }
.btn-xs.danger { color: var(--err); border-color: rgba(255,92,108,.35); }
.form-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; }
.form-grid .field { margin: 0; }
label.field span { display: block; font-size: 12.5px; color: var(--muted); margin-bottom: 5px; }
textarea { min-height: 130px; resize: vertical; font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 13px; }
.toolbar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 14px; }
.toolbar input, .toolbar select { width: auto; min-width: 130px; }
.pill { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 11.5px; border: 1px solid var(--line); background: var(--card2); color: var(--muted); }
.pill.available { color: var(--ok); border-color: rgba(46,230,168,.35); }
.pill.sold { color: var(--brand2); border-color: rgba(20,184,255,.35); }
.pill.reserved { color: var(--warn); border-color: rgba(255,181,69,.35); }
.pill.pending { color: var(--warn); }
.pill.delivered { color: var(--ok); }
.pill.expired, .pill.canceled { color: var(--muted); }
.pill.manual { color: var(--err); }
.toast { position: fixed; right: 20px; bottom: 20px; z-index: 99; display: flex; flex-direction: column; gap: 8px; }
.toast div { padding: 11px 16px; border-radius: 10px; background: var(--card2); border: 1px solid var(--line); font-size: 14px; box-shadow: 0 10px 30px rgba(0,0,0,.5); }
.toast .ok { border-color: rgba(46,230,168,.5); }
.toast .err { border-color: rgba(255,92,108,.5); }
.modal-mask { position: fixed; inset: 0; background: rgba(0,0,0,.6); display: flex; align-items: center; justify-content: center; z-index: 60; padding: 20px; }
.modal { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; width: 100%; max-width: 620px; max-height: 88vh; overflow: auto; }
.modal h3 { margin: 0 0 16px; font-size: 17px; }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 18px; }
.qr-preview { background: #fff; padding: 12px; border-radius: 12px; display: inline-block; line-height: 0; }
.qr-preview svg { width: 240px; height: 240px; display: block; }
@media (max-width: 860px) {
  .detail { grid-template-columns: 1fr; }
  .detail-buy { position: static; }
  .pay { grid-template-columns: 1fr; }
  .order-grid { grid-template-columns: 1fr 1fr; }
  .admin-layout { grid-template-columns: 1fr; }
  .admin-side { border-right: 0; border-bottom: 1px solid var(--line); }
  .admin-side nav { flex-direction: row; flex-wrap: wrap; }
  .admin-main { padding: 18px 14px 50px; }
}