/* ===== 基础 ===== */
:root {
  --navy: #1b2559;
  --navy-2: #2b3a80;
  --purple: #6c4cf1;
  --purple-soft: #f1edff;
  --ink: #1d2433;
  --muted: #6b7385;
  --line: #e7e9f0;
  --bg-soft: #f7f8fb;
  --ok: #138a52;
  --warn: #b26a00;
  --err: #c0362c;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(27, 37, 89, .06), 0 4px 16px rgba(27, 37, 89, .06);
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: #fff; color: var(--ink);
  font: 15px/1.6 -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
}
a { color: var(--purple); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { color: var(--navy); line-height: 1.3; margin: 0 0 .5em; }
h1 { font-size: 22px; } h2 { font-size: 18px; } h3 { font-size: 16px; }
p { margin: 0 0 .8em; }
small, .muted { color: var(--muted); }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 16px; }
.narrow { max-width: 640px; }
.mt { margin-top: 16px; } .mt2 { margin-top: 28px; } .mb { margin-bottom: 16px; }
.center { text-align: center; }
.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.between { justify-content: space-between; }
.grow { flex: 1; }

/* ===== 头部 ===== */
.site-head { position: sticky; top: 0; z-index: 10; background: rgba(255,255,255,.96); border-bottom: 1px solid var(--line); backdrop-filter: blur(8px); }
.site-head .wrap { display: flex; align-items: center; justify-content: space-between; height: 56px; }
.brand { display: flex; align-items: center; gap: 8px; color: var(--navy); font-weight: 700; font-size: 16px; }
.brand:hover { text-decoration: none; }
.brand-mark { width: 26px; height: 26px; border-radius: 8px; background: linear-gradient(135deg, var(--navy), var(--purple)); display: grid; place-items: center; color: #fff; font-size: 13px; }
.head-nav { display: flex; gap: 4px; }
.head-nav a { color: var(--navy); padding: 6px 10px; border-radius: 8px; font-size: 14px; }
.head-nav a:hover { background: var(--bg-soft); text-decoration: none; }
.head-nav .hide-sm { display: none; }
@media (min-width: 720px) { .head-nav .hide-sm { display: inline-block; } }

/* ===== 首页 Hero ===== */
.hero { background: linear-gradient(160deg, var(--navy) 0%, var(--navy-2) 55%, var(--purple) 130%); color: #fff; padding: 32px 0 36px; }
.hero h1 { color: #fff; font-size: 24px; margin-bottom: 8px; }
.hero p { color: rgba(255,255,255,.85); margin-bottom: 18px; }
.trust { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.trust div { background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.18); border-radius: 12px; padding: 10px 8px; text-align: center; font-size: 13px; font-weight: 600; }
.trust span { display: block; font-weight: 400; font-size: 11px; color: rgba(255,255,255,.75); margin-top: 2px; }
@media (min-width: 720px) { .hero { padding: 56px 0; } .hero h1 { font-size: 32px; } .trust div { font-size: 15px; padding: 14px; } .trust span { font-size: 12px; } }

/* ===== 分类入口 ===== */
.cats { display: grid; grid-template-columns: 1fr; gap: 10px; margin-top: -18px; }
@media (min-width: 720px) { .cats { grid-template-columns: repeat(5, 1fr); } }
.cat { display: flex; align-items: center; gap: 12px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; box-shadow: var(--shadow); color: var(--ink); }
.cat:hover { border-color: var(--purple); text-decoration: none; }
@media (min-width: 720px) { .cat { flex-direction: column; align-items: flex-start; } }
.cat-ico { flex: none; width: 40px; height: 40px; border-radius: 10px; background: var(--purple-soft); color: var(--purple); display: grid; place-items: center; font-weight: 700; font-size: 13px; }
.cat b { display: block; color: var(--navy); font-size: 15px; }
.cat small { font-size: 12px; }

/* ===== 区块 ===== */
.section { padding-top: 28px; padding-bottom: 28px; }
.section-title { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 14px; }
.section-title h2 { margin: 0; }

/* ===== 商品卡片 ===== */
.grid { display: grid; grid-template-columns: 1fr; gap: 12px; }
@media (min-width: 640px) { .grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 960px) { .grid { grid-template-columns: repeat(3, 1fr); } }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); }
.pcard { display: flex; flex-direction: column; color: var(--ink); }
.pcard:hover { border-color: var(--purple); text-decoration: none; }
.pcard h3 { margin: 6px 0 8px; }
.tags { display: flex; gap: 6px; flex-wrap: wrap; }
.tag { font-size: 12px; padding: 2px 8px; border-radius: 999px; background: var(--bg-soft); color: var(--navy); border: 1px solid var(--line); }
.tag.purple { background: var(--purple-soft); color: var(--purple); border-color: transparent; }
.price { color: var(--navy); font-weight: 700; font-size: 22px; }
.price small { font-size: 13px; font-weight: 400; color: var(--muted); }
.features { list-style: none; padding: 0; margin: 10px 0 14px; font-size: 13px; color: #3c4459; }
.features li { padding-left: 18px; position: relative; margin: 4px 0; }
.features li::before { content: ""; position: absolute; left: 2px; top: 8px; width: 8px; height: 8px; border-radius: 50%; background: var(--purple); opacity: .7; }
.pcard .foot { margin-top: auto; display: flex; justify-content: space-between; align-items: center; }

/* ===== 按钮 ===== */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; height: 44px; padding: 0 20px; border-radius: 10px; border: 1px solid transparent; font-size: 15px; font-weight: 600; cursor: pointer; background: var(--purple); color: #fff; font-family: inherit; }
.btn:hover { background: #5a3be0; text-decoration: none; }
.btn.navy { background: var(--navy); } .btn.navy:hover { background: #121a45; }
.btn.ghost { background: #fff; color: var(--navy); border-color: var(--line); }
.btn.ghost:hover { border-color: var(--navy); }
.btn.danger { background: #fff; color: var(--err); border-color: #f0c9c5; }
.btn.sm { height: 34px; padding: 0 12px; font-size: 13px; border-radius: 8px; }
.btn.block { width: 100%; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* ===== 筛选条 ===== */
.chips { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 4px; margin-bottom: 14px; -webkit-overflow-scrolling: touch; }
.chip { flex: none; padding: 6px 14px; border-radius: 999px; border: 1px solid var(--line); color: var(--navy); font-size: 13px; background: #fff; }
.chip.on { background: var(--navy); color: #fff; border-color: var(--navy); }
.chip:hover { text-decoration: none; border-color: var(--navy); }

/* ===== 表单 ===== */
.form .field { margin-bottom: 14px; }
.form label { display: block; font-size: 14px; font-weight: 600; color: var(--navy); margin-bottom: 6px; }
.form label .req { color: var(--err); margin-left: 2px; }
.form input[type=text], .form input[type=email], .form input[type=number], .form input[type=password], .form input[type=file], .form select, .form textarea {
  width: 100%; height: 44px; padding: 0 12px; border: 1px solid var(--line); border-radius: 10px; font: inherit; background: #fff; color: var(--ink);
}
.form textarea { height: auto; min-height: 88px; padding: 10px 12px; resize: vertical; }
.form input:focus, .form select:focus, .form textarea:focus { outline: none; border-color: var(--purple); box-shadow: 0 0 0 3px rgba(108, 76, 241, .15); }
.form .hint { font-size: 12px; color: var(--muted); margin-top: 4px; }
.form .readonly { background: var(--bg-soft); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; color: var(--navy); }
.check { display: flex; gap: 8px; align-items: flex-start; font-size: 13px; margin: 8px 0; font-weight: 400 !important; color: var(--ink) !important; }
.check input { margin-top: 3px; width: 16px; height: 16px; accent-color: var(--purple); flex: none; }
.radios { display: flex; gap: 10px; }
.radio-card { flex: 1; display: flex; align-items: center; gap: 8px; border: 1px solid var(--line); border-radius: 10px; padding: 12px; cursor: pointer; font-weight: 600 !important; }
.radio-card input { accent-color: var(--purple); }
.radio-card:has(input:checked) { border-color: var(--purple); background: var(--purple-soft); }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

/* ===== 提示 ===== */
.alert { border-radius: 10px; padding: 10px 12px; font-size: 13px; margin-bottom: 14px; }
.alert.err { background: #fdeeec; color: var(--err); }
.alert.ok { background: #e9f7ef; color: var(--ok); }
.notice { background: var(--bg-soft); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; font-size: 13px; color: #3c4459; }
.notice h3 { font-size: 14px; margin-bottom: 6px; }
.notice ul { margin: 0; padding-left: 18px; }
.notice li { margin: 3px 0; }

/* ===== 金额明细 ===== */
.amounts { width: 100%; border-collapse: collapse; font-size: 14px; }
.amounts td { padding: 8px 0; border-bottom: 1px dashed var(--line); }
.amounts td:last-child { text-align: right; font-variant-numeric: tabular-nums; }
.amounts tr.total td { border-bottom: 0; padding-top: 12px; font-weight: 700; color: var(--navy); font-size: 16px; }
.amounts tr.total td:last-child { color: var(--purple); font-size: 22px; }
.kv { width: 100%; border-collapse: collapse; font-size: 14px; }
.kv th { text-align: left; color: var(--muted); font-weight: 400; padding: 6px 12px 6px 0; width: 34%; vertical-align: top; white-space: nowrap; }
.kv td { padding: 6px 0; word-break: break-all; }

/* ===== 状态 ===== */
.status { display: inline-block; font-size: 12px; font-weight: 600; padding: 2px 10px; border-radius: 999px; background: var(--bg-soft); color: var(--navy); white-space: nowrap; }
.status.pending_payment { background: #fff4e0; color: var(--warn); }
.status.paid, .status.pending_process { background: #e8edff; color: #2846c7; }
.status.processing { background: var(--purple-soft); color: var(--purple); }
.status.completed { background: #e9f7ef; color: var(--ok); }
.status.after_sales { background: #fff4e0; color: var(--warn); }
.status.refunded, .status.cancelled { background: #f0f1f4; color: var(--muted); }

.timeline { list-style: none; padding: 0; margin: 0; border-left: 2px solid var(--line); margin-left: 6px; }
.timeline li { position: relative; padding: 0 0 14px 16px; font-size: 13px; }
.timeline li::before { content: ""; position: absolute; left: -7px; top: 5px; width: 12px; height: 12px; border-radius: 50%; background: #fff; border: 2px solid var(--purple); }
.timeline li:last-child::before { background: var(--purple); }

/* ===== 结果页 ===== */
.result-icon { width: 64px; height: 64px; border-radius: 50%; margin: 8px auto 12px; display: grid; place-items: center; font-size: 30px; color: #fff; background: var(--ok); }
.result-icon.fail { background: var(--err); }
.result-icon.wait { background: var(--warn); }

/* ===== Mock 收银台 ===== */
.mockpay { border: 2px dashed #d9cffd; }
.mock-badge { display: inline-block; background: #fff4e0; color: var(--warn); border-radius: 6px; padding: 2px 8px; font-size: 12px; font-weight: 700; }

/* ===== 文档页 ===== */
.doc h2 { margin-top: 24px; }
.doc ol, .doc ul { padding-left: 20px; }
.doc li { margin: 6px 0; }

/* ===== 页脚 ===== */
.site-foot { border-top: 1px solid var(--line); background: var(--bg-soft); margin-top: 40px; padding: 24px 0 32px; font-size: 13px; color: var(--muted); }
.foot-links { display: flex; flex-wrap: wrap; gap: 6px 16px; margin-bottom: 10px; }
.foot-links a { color: var(--navy); }

/* ===== 管理后台 ===== */
.admin-body { background: var(--bg-soft); }
.admin-head { background: var(--navy); color: #fff; }
.admin-head .wrap { max-width: 1280px; display: flex; align-items: center; justify-content: space-between; height: 52px; }
.admin-head .brand { color: #fff; }
.admin-head a { color: rgba(255,255,255,.85); font-size: 13px; }
.admin-nav { background: #fff; border-bottom: 1px solid var(--line); overflow-x: auto; }
.admin-nav .wrap { max-width: 1280px; display: flex; gap: 2px; }
.admin-nav a { flex: none; padding: 12px 14px; color: var(--ink); font-size: 14px; border-bottom: 2px solid transparent; }
.admin-nav a.on { color: var(--purple); border-bottom-color: var(--purple); font-weight: 600; }
.admin-nav a:hover { text-decoration: none; color: var(--purple); }
.admin-main { max-width: 1280px; padding-top: 20px; padding-bottom: 40px; }
.stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
@media (min-width: 900px) { .stats { grid-template-columns: repeat(4, 1fr); } }
.stat { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 14px; }
.stat b { display: block; font-size: 22px; color: var(--navy); font-variant-numeric: tabular-nums; }
.stat small { font-size: 12px; }
.table-wrap { overflow-x: auto; background: #fff; border: 1px solid var(--line); border-radius: 12px; }
table.data { width: 100%; border-collapse: collapse; font-size: 13px; }
table.data th { text-align: left; font-weight: 600; color: var(--muted); background: #fafbfd; padding: 10px 12px; border-bottom: 1px solid var(--line); white-space: nowrap; }
table.data td { padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
table.data tr:last-child td { border-bottom: 0; }
table.data td.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.admin-grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
@media (min-width: 1000px) { .admin-grid { grid-template-columns: 1.4fr 1fr; } }
.code { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 12px; background: var(--bg-soft); padding: 2px 6px; border-radius: 6px; word-break: break-all; }
.filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; }
.filters select, .filters input { height: 36px; border: 1px solid var(--line); border-radius: 8px; padding: 0 10px; font: inherit; background: #fff; }
.login-box { max-width: 380px; margin: 10vh auto; }

.alert.warn { background: #fff7e6; color: #8a5a00; }
.left { text-align: left; }
.price.xl { font-size: 32px; }
fieldset.plain { border: 0; padding: 0; margin: 0; min-width: 0; }

.tag.soldout { background: #f0f1f4; color: var(--muted); border-color: transparent; }
.promo { font-size: 12px; color: var(--purple); background: var(--purple-soft); border-radius: 8px; padding: 4px 8px; margin: -4px 0 12px; display: inline-block; }
[hidden] { display: none !important; }