:root {
  color-scheme: light;
  --bg: #f3f6f8;
  --panel: #ffffff;
  --ink: #111827;
  --muted: #667085;
  --line: #d8dee6;
  --primary: #0f766e;
  --primary-strong: #115e59;
  --danger: #d92d20;
  --danger-soft: #fff0ee;
  --warning: #b54708;
  --ok: #168449;
  --blue: #2563eb;
  --shadow: 0 12px 30px rgba(24, 39, 75, 0.08);
}

* {
  box-sizing: border-box;
}

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

button,
input,
select {
  font: inherit;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.public-page {
  min-height: 100vh;
}

.public-page[hidden],
.admin-page[hidden] {
  display: none !important;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px clamp(18px, 5vw, 64px);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: inherit;
  text-decoration: none;
}

.brand.dark {
  color: #ffffff;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 8px;
  background: #13a37f;
  color: #ffffff;
  font-size: 22px;
  font-weight: 800;
}

.brand strong,
.brand small {
  display: block;
}

.brand small {
  margin-top: 3px;
  color: var(--muted);
}

.brand.dark small {
  color: #cbd5e1;
}

.quiet-link,
.text-button {
  border: 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}

.quiet-link {
  font-size: 13px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 26px;
  padding: 42px clamp(18px, 5vw, 64px) 30px;
}

.hero-copy h1 {
  margin: 0;
  font-size: 44px;
  line-height: 1.12;
}

.hero-copy p {
  max-width: 760px;
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.75;
}

.hero-note {
  align-self: end;
  display: grid;
  gap: 8px;
  padding: 18px;
  border: 1px solid #a7f3d0;
  border-radius: 8px;
  background: #ecfdf5;
}

.hero-note span {
  color: #276749;
  line-height: 1.55;
}

.eyebrow {
  margin: 0 0 7px;
  color: var(--primary);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.catalog-section {
  padding: 10px clamp(18px, 5vw, 64px) 56px;
}

.section-head,
.page-head,
.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.section-head {
  margin-bottom: 18px;
}

.section-head h2,
.page-head h1,
.panel h2,
.modal-card h2 {
  margin: 0;
}

.section-head p,
.panel-head p,
.modal-card p {
  margin: 6px 0 0;
  color: var(--muted);
  line-height: 1.6;
}

.count-pill {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 7px 12px;
  border-radius: 999px;
  background: #e8f6f2;
  color: var(--primary);
  font-weight: 700;
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.catalog-card,
.panel,
.stats-grid article,
.inventory-card,
.order-card,
.modal-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.catalog-card {
  overflow: hidden;
  display: grid;
  min-height: 360px;
}

.catalog-card.disabled {
  opacity: 0.7;
}

.catalog-card img,
.product-letter {
  width: 100%;
  aspect-ratio: 4 / 3;
}

.catalog-card img {
  display: block;
  object-fit: cover;
  background: #eef2f6;
}

.product-letter {
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #d9f99d, #99f6e4);
  color: #0f4f46;
  font-size: 58px;
  font-weight: 900;
}

.product-letter.small {
  width: 42px;
  height: 42px;
  aspect-ratio: 1;
  border-radius: 8px;
  font-size: 20px;
}

.catalog-card-body {
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  gap: 12px;
  padding: 16px;
}

.catalog-title {
  display: grid;
  gap: 5px;
}

.catalog-title span {
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
}

.catalog-title strong {
  font-size: 20px;
  line-height: 1.35;
}

.catalog-card-body p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

.price-line {
  display: grid;
  gap: 4px;
  color: var(--muted);
  font-size: 14px;
}

.price-line strong {
  color: var(--ink);
  font-size: 18px;
}

.card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.danger-text {
  color: var(--danger);
}

.primary-btn,
.ghost-btn,
.action-btn {
  border: 0;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 700;
}

.primary-btn {
  color: #ffffff;
  background: var(--primary);
  padding: 11px 16px;
}

.primary-btn:hover,
.action-btn:hover {
  background: var(--primary-strong);
}

.ghost-btn {
  color: var(--ink);
  background: #eef2f6;
  padding: 11px 16px;
}

.ghost-btn.sound-on {
  color: var(--primary);
  background: #e8f6f2;
}

.admin-page {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  min-height: 100vh;
}

.admin-sidebar {
  display: flex;
  flex-direction: column;
  gap: 26px;
  padding: 24px;
  background: #101828;
  color: #ffffff;
}

.admin-nav {
  display: grid;
  gap: 10px;
}

.admin-nav-item {
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  background: transparent;
  color: #e4e7ec;
  padding: 13px 14px;
  text-align: left;
  cursor: pointer;
}

.admin-nav-item.active,
.admin-nav-item:hover {
  background: #ffffff;
  color: #101828;
}

.user-card {
  margin-top: auto;
  display: grid;
  gap: 8px;
  padding: 16px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
}

.user-card span,
.user-card .text-button {
  color: #cbd5e1;
  text-align: left;
}

.admin-workspace {
  min-width: 0;
  padding: 28px;
}

.admin-panel {
  display: none;
}

.admin-panel.active {
  display: block;
}

.page-head {
  margin-bottom: 22px;
}

.page-head h1 {
  font-size: 32px;
}

.stats-grid,
.inventory-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.stats-grid article {
  display: grid;
  gap: 8px;
  padding: 18px;
}

.stats-grid span,
.inventory-card p {
  color: var(--muted);
}

.stats-grid strong {
  font-size: 30px;
}

.panel {
  margin-top: 18px;
  padding: 20px;
}

.button-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.alarm-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 180px;
  padding: 13px 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.alarm-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #98a2b3;
}

.alarm-badge.hot {
  background: var(--danger-soft);
  border-color: #fda29b;
  color: var(--danger);
  animation: alarmFlash 0.75s infinite;
}

.alarm-badge.hot .alarm-dot {
  background: var(--danger);
  box-shadow: 0 0 0 8px rgba(217, 45, 32, 0.12);
}

@keyframes alarmFlash {
  0%,
  100% {
    filter: brightness(1);
  }
  50% {
    filter: brightness(1.12);
  }
}

.order-list,
.admin-product-list,
.staff-list {
  display: grid;
  gap: 12px;
  margin-top: 16px;
}

.order-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px;
  padding: 16px;
  border-left: 6px solid var(--blue);
}

.order-card.pending {
  border-left-color: var(--danger);
  background: #fff8f7;
}

.order-card.returning {
  border-left-color: var(--warning);
}

.order-card h3,
.admin-row h3,
.inventory-card h3 {
  margin: 0;
}

.order-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 8px;
  color: var(--muted);
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  border-radius: 999px;
  background: #eef2f6;
  padding: 4px 10px;
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
}

.pill.pending {
  background: var(--danger-soft);
  color: var(--danger);
}

.pill.renting {
  background: #dcfae6;
  color: var(--ok);
}

.pill.returning {
  background: #fef0c7;
  color: var(--warning);
}

.action-stack {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 128px;
}

.action-btn {
  color: #ffffff;
  background: var(--primary);
  padding: 10px 12px;
}

.action-btn.secondary {
  background: #344054;
}

.inventory-grid {
  margin-top: 16px;
}

.inventory-card {
  display: grid;
  gap: 10px;
  padding: 16px;
}

.inventory-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.stock-bar {
  height: 9px;
  overflow: hidden;
  border-radius: 99px;
  background: #eef2f6;
}

.stock-bar span {
  display: block;
  height: 100%;
  width: 50%;
  background: var(--primary);
}

.product-form,
.staff-form {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.staff-form {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

label {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

input,
select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  padding: 11px 12px;
  outline: none;
}

.product-form .wide {
  grid-column: span 2;
}

.product-form button,
.staff-form button {
  align-self: end;
  min-height: 43px;
}

.permission-box {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  grid-column: span 3;
}

.permission-box label {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.permission-box input {
  width: auto;
}

.admin-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 14px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.admin-row p {
  margin: 5px 0 0;
  color: var(--muted);
}

.avatar-dot {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 999px;
  background: #e8f6f2;
  color: var(--primary);
  font-weight: 800;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(15, 23, 42, 0.45);
}

.modal[hidden] {
  display: none;
}

.modal-card {
  position: relative;
  width: min(430px, 100%);
  padding: 24px;
}

.wide-modal {
  width: min(760px, 100%);
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 0;
  border-radius: 8px;
  background: #eef2f6;
  cursor: pointer;
  font-size: 24px;
  line-height: 1;
}

.login-form {
  display: grid;
  gap: 14px;
  margin-top: 18px;
}

.captcha-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 86px;
  gap: 8px;
}

.captcha-row .ghost-btn {
  padding: 0 12px;
}

.captcha-question {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  border-radius: 8px;
  background: #f1f5f9;
  color: var(--primary);
  font-size: 20px;
  font-weight: 800;
}

.qr-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.qr-grid article {
  display: grid;
  gap: 10px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.qr-grid span {
  color: var(--muted);
  line-height: 1.5;
}

.qr-placeholder {
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  border: 1px dashed var(--line);
  border-radius: 8px;
  background: #f8fafc;
  color: var(--muted);
  font-weight: 700;
}

.notice-line {
  margin-top: 16px;
  padding: 12px;
  border-radius: 8px;
  background: #fff7ed;
  color: #9a3412;
  font-weight: 700;
}

.empty {
  padding: 26px;
  border: 1px dashed var(--line);
  border-radius: 8px;
  color: var(--muted);
  text-align: center;
}

@media (max-width: 1100px) {
  .catalog-grid,
  .stats-grid,
  .inventory-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero {
    grid-template-columns: 1fr;
  }

  .hero-note {
    align-self: stretch;
  }

  .product-form,
  .staff-form {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .permission-box,
  .product-form .wide {
    grid-column: span 2;
  }
}

@media (max-width: 760px) {
  .admin-page {
    grid-template-columns: 1fr;
  }

  .admin-sidebar {
    position: sticky;
    top: 0;
    z-index: 8;
    padding: 14px;
  }

  .admin-nav {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .user-card {
    display: none;
  }

  .hero-copy h1 {
    font-size: 34px;
  }

  .catalog-grid,
  .stats-grid,
  .inventory-grid,
  .product-form,
  .staff-form,
  .admin-row,
  .qr-grid {
    grid-template-columns: 1fr;
  }

  .permission-box,
  .product-form .wide {
    grid-column: span 1;
  }

  .section-head,
  .page-head,
  .panel-head,
  .order-card,
  .card-foot {
    align-items: stretch;
    flex-direction: column;
    display: flex;
  }
}