:root {
  --ink: #17171c;
  --muted: #6b6b7b;
  --line: #e6e6ef;
  --bg: #f4f5fa;
  --card: #ffffff;
  --accent: #4f46e5;
  --accent-2: #7c3aed;
  --ok: #059669;
  --bad: #dc2626;
  --radius: 18px;
  --shadow: 0 10px 30px rgba(23, 23, 28, .08);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  min-height: 100vh;
}

.glow {
  position: fixed;
  inset: -20% -10% auto -10%;
  height: 520px;
  background:
    radial-gradient(60% 60% at 20% 20%, rgba(124, 58, 237, .18), transparent 70%),
    radial-gradient(50% 50% at 80% 10%, rgba(79, 70, 229, .16), transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.wrap {
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 1;
}

/* ---------------------------------------------------------- 顶栏 */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, .78);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: .5px;
}

.brand-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 0 4px rgba(79, 70, 229, .12);
}

.nav { display: flex; gap: 6px; }

.nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  padding: 8px 14px;
  border-radius: 999px;
  transition: .18s;
}

.nav a:hover { color: var(--ink); background: rgba(79, 70, 229, .08); }

/* ---------------------------------------------------------- 主体 */
.main { padding-top: 32px; padding-bottom: 56px; display: grid; gap: 20px; }

.page-title { font-size: 24px; margin: 0 0 4px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 26px 28px;
  width: 100%;
}

.card h2 { font-size: 16px; margin: 0 0 16px; letter-spacing: .3px; }

.hero { text-align: center; padding: 46px 28px; }
.hero h1 { font-size: 30px; margin: 0 0 10px; letter-spacing: .5px; }
.hero .actions { display: flex; gap: 12px; justify-content: center; margin: 24px 0 18px; flex-wrap: wrap; }

.muted { color: var(--muted); margin: 0; }
.tip { color: var(--muted); font-size: 13px; margin: 14px 0 0; }

.stock { color: var(--muted); font-size: 14px; display: inline-flex; align-items: center; gap: 8px; }
.stock strong { color: var(--ink); font-size: 16px; }
.stock .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 4px rgba(5, 150, 105, .14); }

.grid3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; }
.step { padding: 22px 24px; }
.step-no {
  display: inline-flex; width: 28px; height: 28px; border-radius: 9px;
  align-items: center; justify-content: center; font-weight: 700; font-size: 14px;
  color: #fff; background: linear-gradient(135deg, var(--accent), var(--accent-2));
  margin-bottom: 10px;
}
.step h3 { margin: 0 0 6px; font-size: 15px; }
.step p { margin: 0; color: var(--muted); font-size: 14px; }

/* ---------------------------------------------------------- 表单 */
.narrow { max-width: 560px; margin: 0 auto; width: 100%; }

.form { display: grid; gap: 14px; margin-top: 18px; }
.form label { display: grid; gap: 6px; font-size: 13px; color: var(--muted); }

input, textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  font: inherit;
  font-size: 15px;
  color: var(--ink);
  background: #fbfbfe;
  transition: .18s;
}

input:focus, textarea:focus {
  outline: none;
  border-color: rgba(79, 70, 229, .55);
  box-shadow: 0 0 0 4px rgba(79, 70, 229, .12);
  background: #fff;
}

textarea { resize: vertical; font-family: Consolas, "Courier New", monospace; font-size: 13px; }

.code-input {
  text-align: center;
  letter-spacing: 2px;
  font-family: Consolas, "Courier New", monospace;
  font-size: 18px;
  padding: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border: 0;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  font: inherit;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: .18s;
  white-space: nowrap;
}

.btn:hover { filter: brightness(1.06); transform: translateY(-1px); }
.btn.wide { width: 100%; }
.btn.ghost { background: #fff; color: var(--ink); border: 1px solid var(--line); }
.btn.tiny { padding: 6px 12px; font-size: 13px; border-radius: 9px; }

.row-form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 14px;
  align-items: end;
}

.row-form .btn { justify-self: start; padding: 12px 28px; }

/* ---------------------------------------------------------- 统计牌 */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 14px;
}

.stat {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px 18px;
  box-shadow: 0 4px 14px rgba(23, 23, 28, .04);
  display: grid;
  gap: 4px;
}

.stat-label { font-size: 13px; color: var(--muted); }
.stat-value { font-size: 26px; font-weight: 700; letter-spacing: .5px; }

/* ---------------------------------------------------------- 表格 */
.table-wrap { width: 100%; overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th {
  text-align: left; font-weight: 600; font-size: 13px; color: var(--muted);
  padding: 10px 12px; border-bottom: 1px solid var(--line); white-space: nowrap;
}
.table td { padding: 12px; border-bottom: 1px solid #f1f1f7; vertical-align: middle; }
.table tr:last-child td { border-bottom: 0; }
.table tbody tr:hover { background: #fafaff; }
.table code { font-family: Consolas, "Courier New", monospace; font-size: 13px; letter-spacing: .4px; }
.cell-action { text-align: right; }
.cell-action form { display: inline; }

.tag {
  display: inline-block; padding: 3px 10px; border-radius: 999px;
  font-size: 12px; background: #eef0f7; color: var(--muted);
}
.tag.unused, .tag.available { background: rgba(5, 150, 105, .12); color: #047857; }
.tag.used, .tag.issued { background: rgba(79, 70, 229, .12); color: #4338ca; }
.tag.void, .tag.dead { background: rgba(220, 38, 38, .12); color: #b91c1c; }
.tag.locked { background: rgba(217, 119, 6, .14); color: #b45309; }

/* ---------------------------------------------------------- 结果页 */
.result { text-align: center; }
.result-icon {
  width: 56px; height: 56px; border-radius: 50%; margin: 0 auto 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 26px; font-weight: 700; color: #fff;
}
.result.ok .result-icon { background: linear-gradient(135deg, #10b981, #059669); }
.result.bad .result-icon { background: linear-gradient(135deg, #f87171, #dc2626); }
.result h1 { font-size: 24px; margin: 0 0 8px; }

.info-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px; margin: 22px 0; text-align: left;
}
.info {
  background: #fafaff; border: 1px solid var(--line); border-radius: 12px;
  padding: 12px 14px; display: grid; gap: 2px;
}
.info span { font-size: 12px; color: var(--muted); }
.info strong { font-size: 14px; word-break: break-all; }

.flash {
  padding: 12px 16px; border-radius: 12px; font-size: 14px;
  background: rgba(5, 150, 105, .1); color: #047857; border: 1px solid rgba(5, 150, 105, .2);
}
.flash.err { background: rgba(220, 38, 38, .08); color: #b91c1c; border-color: rgba(220, 38, 38, .2); }

.foot { color: var(--muted); font-size: 12px; padding-bottom: 40px; text-align: center; }

@media (max-width: 640px) {
  .hero h1 { font-size: 24px; }
  .card { padding: 20px; }
  .topbar-inner { height: 58px; }
  .nav a { padding: 6px 10px; font-size: 13px; }
}

/* ============================================================
   2026-10-28 改版：暖纸底 + 陶土色，学对手的克制感
   ============================================================ */
:root {
  --paper: #faf7f2;
  --ink: #241f1a;
  --muted: #7d746a;
  --line: #e9e1d6;
  --card: #fffdfa;
  --accent: #b5482c;
  --accent-2: #c05e42;
  --ok: #2f7d5d;
  --bad: #b3261e;
  --radius: 14px;
  --shadow: 0 6px 20px rgba(60, 40, 20, .06);
}

body { background: var(--paper); }

.glow {
  height: 420px;
  background:
    radial-gradient(55% 55% at 25% 0%, rgba(181, 72, 44, .07), transparent 70%),
    radial-gradient(45% 45% at 85% 5%, rgba(120, 90, 60, .06), transparent 70%);
}

.topbar {
  background: rgba(250, 247, 242, .88);
  border-bottom: 1px solid var(--line);
}
.brand { letter-spacing: .3px; }
.brand-dot { background: var(--accent); box-shadow: 0 0 0 4px rgba(181, 72, 44, .12); }
.nav a:hover { color: var(--accent); background: rgba(181, 72, 44, .07); }

.card { background: var(--card); border-color: var(--line); box-shadow: var(--shadow); }

.btn {
  background: var(--accent);
  border-radius: 11px;
  font-weight: 600;
  letter-spacing: .3px;
}
.btn:hover { background: var(--accent-2); filter: none; transform: none; }
.btn.ghost { background: #fff; color: var(--ink); border: 1px solid var(--line); }
.btn.ghost:hover { background: #fdf9f4; }

input, textarea { background: #fff; border-color: var(--line); }
input:focus, textarea:focus {
  border-color: rgba(181, 72, 44, .5);
  box-shadow: 0 0 0 4px rgba(181, 72, 44, .1);
}

.code-input { font-size: 17px; letter-spacing: 1.5px; padding: 14px 16px; }

/* ---------- 分段切换（和对手一样的胶囊条） ---------- */
.segmented {
  display: flex;
  gap: 4px;
  padding: 5px;
  background: #f2ebe1;
  border-radius: 12px;
  width: 100%;
}
.segmented a {
  flex: 1;
  text-align: center;
  padding: 10px 8px;
  border-radius: 9px;
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  transition: .16s;
}
.segmented a:hover { color: var(--ink); }
.segmented a.is-active {
  background: #fff;
  color: var(--accent);
  font-weight: 600;
  box-shadow: 0 1px 3px rgba(60, 40, 20, .08);
}

/* ---------- 三步进度条 ---------- */
.progress { display: flex; gap: 6px; margin: 20px 0 24px; }
.progress span { flex: 1; height: 3px; border-radius: 2px; background: #ece3d8; }
.progress span.on { background: var(--accent); }

.step-title { font-size: 23px; margin: 0 0 6px; letter-spacing: .4px; }

.stock-row {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  color: var(--muted);
  margin: 18px 0 6px;
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
}
.stock-row strong { color: var(--ink); font-size: 15px; }
.stock-row .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--ok); box-shadow: 0 0 0 4px rgba(47, 125, 93, .13);
}

.field { display: grid; gap: 8px; }
.field-label { font-size: 13px; color: var(--muted); }
.hint { font-size: 13px; color: var(--muted); margin: -4px 0 2px; }
.footnote { text-align: center; font-size: 13px; color: var(--muted); margin: 18px 0 0; }
.arrow { margin-left: 6px; }

.panel { max-width: 560px; margin: 0 auto; padding: 24px 26px 30px; }

/* ---------- 底部三张说明卡 ---------- */
.steps3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
  max-width: 920px;
  margin: 18px auto 0;
}
.step-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px 20px;
}
.step-no {
  display: inline-flex;
  width: 30px; height: 30px;
  align-items: center; justify-content: center;
  border-radius: 9px;
  background: var(--accent);
  color: #fff;
  font-size: 13px; font-weight: 700;
  margin-bottom: 10px;
}
.step-card h3 { margin: 0 0 6px; font-size: 15px; }
.step-card p { margin: 0; color: var(--muted); font-size: 13.5px; line-height: 1.65; }

/* 首页稍微收一收 */
.hero { padding: 44px 28px 40px; }
.hero h1 { font-size: 32px; }
.hero .actions { margin: 26px 0 20px; }

.info { background: #fdfaf5; border-color: var(--line); }
.stat, .table, .tag { border-color: var(--line); }
/* ---------- 后台：跟前台同一套语气 ---------- */
.eyebrow {
  font-size: 11.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
  margin: 0 0 6px;
}
.page-head { padding: 4px 0 6px; }
.page-head .page-title { margin: 0 0 6px; font-size: 27px; }
.page-head .muted { font-size: 14px; }

.card h2 { font-size: 17px; margin: 0 0 14px; letter-spacing: .2px; }

.stat {
  border-top: 3px solid #f0e6d8;
  gap: 6px;
  transition: box-shadow .18s, transform .18s;
}
.stat:hover { box-shadow: 0 8px 22px rgba(60, 40, 20, .07); }
.stat-label { font-size: 12.5px; letter-spacing: .02em; }
.stat-value { font-size: 27px; font-weight: 700; }

.table th {
  font-size: 12px;
  letter-spacing: .06em;
  text-transform: uppercase;
  padding: 12px;
  border-bottom: 1px solid var(--line);
}
.table td { padding: 13px 12px; border-bottom: 1px solid #f4ede3; }
.table tbody tr:hover { background: #fdf9f4; }
.table code {
  background: #f7f1e8;
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 12.5px;
}

.tag { font-size: 11.5px; padding: 3px 9px; }

textarea { background: #fff; }
input[type=file] { padding: 9px 12px; font-size: 13px; background: #fff; }

.stat + .stat { margin-top: 0; }
.head-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}
.head-row .page-title { margin: 0; }
.code-area {
  text-align: left;
  letter-spacing: 0;
  font-family: Consolas, "Courier New", monospace;
  font-size: 14px;
  line-height: 1.9;
  padding: 14px 16px;
  min-height: 96px;
  resize: vertical;
}
.panel.wide { max-width: 760px; }
.head-actions { display: flex; gap: 8px; align-items: center; }
.head-actions form { display: inline; }
/* 卡密这种长串，尽量在横杠处断开，别劈成两半 */
.info strong { word-break: break-word; }