feat(orders): 规范化前台订单详情弹窗

弹窗外壳由 modal-runtime 挂载在 body 下，并不位于 .aksrt-orders-page 之内，
而原有 .aksrt-order-detail__* 规则引用的 --orders-ink / --orders-line 等别名
只定义在页面容器上。变量在该作用域无法解析，整条声明被判为无效值丢弃，于是
边框、分隔线与次要文字色全部没有生效——弹窗此前「没做完」的根因就在这里。

- renderDetail() 重构为状态横幅 + 商品信息 + 交易信息 + 操作栏四段
- 状态配色改由单个 --hero-accent 变量驱动，按状态切换琥珀 / 绿 / 品牌色 /
  中性灰；--hero-text 再与墨色混合，避免强调色直接用作正文导致对比度不足
- 交易信息补上支付方式；流水号增加复制按钮（clipboard API + textarea 回退，
  带 is-copied 反馈）
- 待支付订单在详情内显示实时倒计时；updateCountdowns() 经新增的
  countdownScopes() 一并扫描弹窗内容，原先只扫页面根节点
- 补充此前完全缺失的 refresh-state 与 skeleton 样式
- 金额口径按状态区分应付款 / 实付款 / 订单金额；卡密核销回退出的原始渠道 key
  归一显示为「卡密核销」
- 弹窗外壳挂 aksrt-order-detail-modal 类以限定样式作用域，宽度调至 480px

关键点是所需 token 在弹窗外壳上重新声明，而不是继续依赖页面级别名——后者会
因 portal 作用域再次失效。移动端沿用 bottom sheet，操作按钮等分宽度。

验证：node --test tests/**/*.test.cjs 362/364 通过（2 项失败为改动前既存，
见上一笔提交说明）；phpunit 44 项 / 103 断言全部通过；Chromium 实拍 1080px
浅色与暗色两套主题逐项核对；样式类定义 21 个与引用 21 个完全对应，无遗留
死样式；order-center.js 经 node --check 语法校验通过。

assets/css/routes/orders.css

@@ -92,8 +92,71 @@
 .aksrt-orders-page__empty i { display: block; margin-bottom: 12px; color: var(--color-primary, #3b82f6); font-size: 30px; }
 .aksrt-orders-page__empty h3 { margin: 0 0 7px; font-size: 15px; }.aksrt-orders-page__empty p { margin: 0 0 16px; color: var(--orders-muted); font-size: 13px; }
 
-.aksrt-order-detail__actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 7px; padding: 12px 16px; border-top: 1px solid var(--orders-line); background: var(--surface-2, #f7f8fb); }
-.aksrt-order-detail__hero { display: flex; align-items: center; justify-content: space-between; padding: 15px; border-radius: 11px; background: color-mix(in srgb, var(--color-primary, #3b82f6) 9%, var(--surface-2, #f7f8fb)); }.aksrt-order-detail__hero.is-pending { background: color-mix(in srgb, var(--color-warning, #c87819) 11%, var(--surface-2, #f7f8fb)); }.aksrt-order-detail__hero.is-paid { background: color-mix(in srgb, var(--color-success, #168560) 10%, var(--surface-2, #f7f8fb)); }.aksrt-order-detail__status-pill { font-size: 12px; font-weight: 700; }.aksrt-order-detail__hero-amount { font-size: 23px; font-variant-numeric: tabular-nums; }.aksrt-order-detail__product { display: grid; grid-template-columns: 56px minmax(0, 1fr); gap: 11px; align-items: center; }.aksrt-order-detail__thumb { width: 56px; height: 56px; border-radius: 10px; object-fit: cover; }.aksrt-order-detail__thumb--empty { display: grid; place-items: center; background: var(--surface-2, #f4f6f9); color: var(--color-primary, #3b82f6); }.aksrt-order-detail__product-title { display: block; line-height: 1.4; }.aksrt-order-detail__product-meta { display: block; margin-top: 5px; color: var(--orders-muted); font-size: 12px; }.aksrt-order-detail__list { margin: 0; border: 1px solid var(--orders-line); border-radius: 10px; overflow: hidden; }.aksrt-order-detail__list > div { display: grid; grid-template-columns: 86px minmax(0, 1fr); padding: 10px 12px; border-bottom: 1px solid var(--orders-line); font-size: 12px; }.aksrt-order-detail__list > div:last-child { border-bottom: 0; }.aksrt-order-detail__list dt { color: var(--orders-muted); }.aksrt-order-detail__list dd { margin: 0; overflow-wrap: anywhere; text-align: right; font-variant-numeric: tabular-nums; }
+/* ---- Order detail modal (front-end order center) ---- */
+/* The dialog is portalled to <body>, so it cannot inherit the page-scoped
+   `--orders-*` aliases; it re-declares the few tokens it needs on the shell. */
+.aksrt-order-detail-modal {
+  --detail-ink: var(--color-ink, #333333);
+  --detail-muted: var(--color-ink-3, #777777);
+  --detail-line: var(--color-line-stronger, rgba(50, 50, 50, .12));
+  --detail-surface: var(--surface-1, #fff);
+  --detail-surface-2: var(--surface-2, #eee);
+  --detail-surface-3: var(--surface-4, #f8f8f8);
+  --detail-primary: var(--color-primary, #f04494);
+  --detail-warning: var(--color-warning, #f59e0b);
+  --detail-success: var(--color-success, #10b981);
+}
+
+.aksrt-order-detail-modal:not(.aksrt-modal-runtime--bottom) .aksrt-modal-runtime__dialog { width: min(480px, calc(100vw - 32px)); }
+.aksrt-order-detail-modal .aksrt-modal-runtime__header { padding: 15px 18px 14px; border-bottom: 1px solid var(--detail-line); }
+.aksrt-order-detail-modal .aksrt-modal-runtime__title { font-size: 16px; font-weight: 700; }
+.aksrt-order-detail-modal .aksrt-modal-runtime__content { display: flex; flex-direction: column; gap: 18px; padding: 16px 18px 0; }
+
+.aksrt-order-detail__skeleton { display: grid; gap: 12px; padding: 4px 0; }
+
+/* Status banner — a single local variable drives the whole colour scheme. */
+.aksrt-order-detail__hero { --hero-accent: var(--detail-primary); --hero-text: color-mix(in srgb, var(--hero-accent) 72%, var(--detail-ink)); display: flex; align-items: center; gap: 13px; padding: 15px; border: 1px solid color-mix(in srgb, var(--hero-accent) 20%, transparent); border-radius: 14px; background: color-mix(in srgb, var(--hero-accent) 12%, var(--detail-surface)); }
+.aksrt-order-detail__hero.is-pending { --hero-accent: var(--detail-warning); }
+.aksrt-order-detail__hero.is-paid { --hero-accent: var(--detail-success); }
+.aksrt-order-detail__hero.is-refunded, .aksrt-order-detail__hero.is-closed { --hero-accent: var(--detail-muted); }
+.aksrt-order-detail__hero-icon { display: grid; flex: 0 0 auto; width: 42px; height: 42px; place-items: center; border-radius: 12px; background: color-mix(in srgb, var(--hero-accent) 16%, transparent); color: var(--hero-text); font-size: 19px; }
+.aksrt-order-detail__hero-copy { display: grid; flex: 1 1 auto; gap: 4px; min-width: 0; }
+.aksrt-order-detail__status { color: var(--hero-text); font-size: 15px; font-weight: 750; line-height: 1.2; }
+.aksrt-order-detail__desc { margin: 0; color: var(--detail-muted); font-size: 12px; line-height: 1.45; }
+.aksrt-order-detail__countdown { color: var(--hero-text); font-size: 12px; font-variant-numeric: tabular-nums; }
+.aksrt-order-detail__hero-amount { display: grid; flex: 0 0 auto; gap: 3px; justify-items: end; text-align: right; }
+.aksrt-order-detail__hero-amount strong { color: var(--detail-ink); font-size: 21px; font-weight: 750; line-height: 1.1; letter-spacing: -.01em; font-variant-numeric: tabular-nums; }
+.aksrt-order-detail__hero-amount span { color: var(--detail-muted); font-size: 11px; }
+
+.aksrt-order-detail__group { display: grid; gap: 10px; }
+.aksrt-order-detail__group-title { display: flex; align-items: center; gap: 8px; margin: 0; color: var(--detail-ink); font-size: 13px; font-weight: 700; line-height: 1.3; }
+.aksrt-order-detail__group-title::before { content: ""; width: 3px; height: 13px; border-radius: 2px; background: var(--detail-primary); }
+
+.aksrt-order-detail__product { display: grid; grid-template-columns: 54px minmax(0, 1fr); gap: 12px; align-items: center; padding: 12px; border: 1px solid var(--detail-line); border-radius: 12px; background: var(--detail-surface); }
+.aksrt-order-detail__thumb { width: 54px; height: 54px; border-radius: 10px; object-fit: cover; }
+.aksrt-order-detail__thumb--empty { display: grid; place-items: center; background: var(--detail-surface-2); color: var(--detail-primary); font-size: 19px; }
+.aksrt-order-detail__product-copy { display: grid; gap: 6px; min-width: 0; }
+.aksrt-order-detail__product-title { display: -webkit-box; overflow: hidden; color: var(--detail-ink); font-size: 14px; line-height: 1.45; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
+.aksrt-order-detail__product-meta { display: inline-flex; justify-self: start; padding: 2px 8px; border-radius: 999px; background: color-mix(in srgb, var(--detail-primary) 9%, var(--detail-surface-2)); color: var(--detail-primary); font-size: 11px; font-weight: 650; line-height: 1.5; }
+
+.aksrt-order-detail__list { display: grid; margin: 0; overflow: hidden; border: 1px solid var(--detail-line); border-radius: 12px; background: var(--detail-surface); }
+.aksrt-order-detail__list > div { display: grid; grid-template-columns: 84px minmax(0, 1fr); align-items: center; gap: 12px; padding: 11px 13px; border-bottom: 1px solid var(--detail-line); }
+.aksrt-order-detail__list > div:last-child { border-bottom: 0; }
+.aksrt-order-detail__list dt { color: var(--detail-muted); font-size: 12.5px; }
+.aksrt-order-detail__list dd { display: flex; align-items: center; justify-content: flex-end; gap: 8px; min-width: 0; margin: 0; color: var(--detail-ink); font-size: 13px; font-variant-numeric: tabular-nums; text-align: right; }
+.aksrt-order-detail__value-text { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
+.aksrt-order-detail__value-text.is-mono { font-family: var(--font-mono, monospace); font-size: 12.5px; letter-spacing: .01em; }
+.aksrt-order-detail__copy { display: inline-grid; flex: 0 0 auto; width: 24px; height: 24px; padding: 0; place-items: center; border: 1px solid var(--detail-line); border-radius: 7px; background: var(--detail-surface-3); color: var(--detail-muted); font-size: 11px; line-height: 1; cursor: pointer; transition: color .15s ease, border-color .15s ease; }
+.aksrt-order-detail__copy:hover { border-color: color-mix(in srgb, var(--detail-primary) 45%, var(--detail-line)); color: var(--detail-primary); }
+.aksrt-order-detail__copy.is-copied { border-color: color-mix(in srgb, var(--detail-success) 45%, var(--detail-line)); color: var(--detail-success); }
+
+.aksrt-order-detail__refresh-state { display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: center; gap: 10px; padding: 12px 13px; border: 1px solid color-mix(in srgb, var(--detail-warning) 26%, transparent); border-radius: 12px; background: color-mix(in srgb, var(--detail-warning) 10%, var(--detail-surface-2)); color: var(--detail-ink); font-size: 12.5px; }
+.aksrt-order-detail__refresh-state > i { color: var(--detail-warning); font-size: 15px; }
+.aksrt-order-detail__refresh-state p { margin: 0; }
+.aksrt-order-detail__refresh-state button { grid-column: 2; justify-self: start; }
+
+.aksrt-order-detail-modal .aksrt-order-detail__actions { position: sticky; bottom: 0; z-index: 2; flex-direction: row; flex-wrap: wrap; justify-content: flex-end; gap: 8px; margin: 0 -18px; padding: 13px 18px; border-top: 1px solid var(--detail-line); background: var(--detail-surface); }
+.aksrt-order-detail-modal .aksrt-order-detail__actions > button { flex: 0 0 auto; min-height: 38px; padding: 0 16px; white-space: nowrap; }
 
 /* Orders extensions */
 .aksrt-orders-page__extra-nav { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 12px; }
@@ -112,5 +175,5 @@
 .aksrt-coupon-card__meta { margin-bottom: 4px; color: var(--muted-2-color, #888); font-size: 12px; }
 .aksrt-orders-page__field { margin-bottom: 12px; }
 .aksrt-orders-page__input, .aksrt-orders-page__select, .aksrt-orders-page__textarea { box-sizing: border-box; width: 100%; padding: 8px 10px; border: 1px solid var(--main-border-color, #ddd); border-radius: 6px; }
-@media (max-width: 767px) { .uc-orders-panel__head { grid-template-columns: 1fr; gap: 17px; }.aksrt-orders-page__stats { max-width: none; }.aksrt-orders-page__search { flex-wrap: wrap; }.aksrt-orders-page__search input { min-width: 150px; }.aksrt-orders-page__search .btn-primary { margin-left: auto; }.aksrt-orders-page__filter-toggle { margin-left: auto; }.aksrt-orders-page__card-rail time { width: 100%; margin-left: 0; order: 3; }.aksrt-orders-page__card-main { grid-template-columns: 48px minmax(0, 1fr); }.aksrt-orders-page__card-img, .aksrt-orders-page__card-art { width: 48px; height: 48px; }.aksrt-orders-page__card-value { grid-column: 2; text-align: left; }.aksrt-orders-page__card-actions > :not(.aksrt-orders-page__countdown) { flex: 1 1 auto; }.aksrt-orders-page__countdown { width: 100%; }.aksrt-order-detail__actions > * { flex: 1; } }
-html.dark .aksrt-orders-page__stat, html.dark .aksrt-orders-page__card { background: var(--surface-1, #1a1d24); } html.dark .aksrt-orders-page__card-rail, html.dark .aksrt-orders-page__filter-panel, html.dark .aksrt-order-detail__actions { background: var(--surface-2, #12151b); }
+@media (max-width: 767px) { .uc-orders-panel__head { grid-template-columns: 1fr; gap: 17px; }.aksrt-orders-page__stats { max-width: none; }.aksrt-orders-page__search { flex-wrap: wrap; }.aksrt-orders-page__search input { min-width: 150px; }.aksrt-orders-page__search .btn-primary { margin-left: auto; }.aksrt-orders-page__filter-toggle { margin-left: auto; }.aksrt-orders-page__card-rail time { width: 100%; margin-left: 0; order: 3; }.aksrt-orders-page__card-main { grid-template-columns: 48px minmax(0, 1fr); }.aksrt-orders-page__card-img, .aksrt-orders-page__card-art { width: 48px; height: 48px; }.aksrt-orders-page__card-value { grid-column: 2; text-align: left; }.aksrt-orders-page__card-actions > :not(.aksrt-orders-page__countdown) { flex: 1 1 auto; }.aksrt-orders-page__countdown { width: 100%; }.aksrt-order-detail-modal .aksrt-order-detail__actions > button { flex: 1 1 0; min-width: 0; padding: 0 10px; } }
+html.dark .aksrt-orders-page__stat, html.dark .aksrt-orders-page__card { background: var(--surface-1, #1a1d24); } html.dark .aksrt-orders-page__card-rail, html.dark .aksrt-orders-page__filter-panel { background: var(--surface-2, #12151b); }