.page-products {
  --band-bg: #0D1F33;
  --chip-bg: #10263D;
  --muted-text: #8FA9BD;
  --chamfer-chip: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 8px 100%, 0 calc(100% - 8px));
  background: var(--ink);
  color: var(--paper);
}

.page-products .shell {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--pad);
}

.page-products h1,
.page-products h2,
.page-products h3 {
  font-family: var(--font-display);
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.page-products p {
  line-height: 1.75;
}

/* ---------- 首屏 ---------- */
.page-products .lib-hero {
  padding-block: clamp(20px, 4vw, 36px) clamp(36px, 6vw, 72px);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(77, 227, 224, 0.16), transparent 62%),
    radial-gradient(80% 70% at 0% 100%, rgba(246, 196, 83, 0.09), transparent 60%),
    linear-gradient(180deg, #07111F 0%, #08182a 72%, var(--ink) 100%);
  border-bottom: 1px solid var(--line);
}

.page-products .lib-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 44px);
  align-items: center;
  margin-top: 18px;
}

.page-products .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
  margin-bottom: 14px;
}

.page-products h1 {
  font-size: clamp(34px, 7vw, 62px);
  font-weight: 900;
  color: var(--paper);
  margin-bottom: 18px;
}

.page-products .lib-lede {
  font-size: clamp(15px, 1.5vw, 17px);
  color: #C6D8E2;
  max-width: 34em;
  margin-bottom: 24px;
}

.page-products .lib-keys {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-bottom: 20px;
}

.page-products .lib-key {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  background: var(--chip-bg);
  border: 1px solid var(--line);
  color: var(--paper);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  text-decoration: none;
  clip-path: var(--chamfer-btn);
  transition: background var(--fast) var(--ease), border-color var(--fast) var(--ease), transform var(--fast) var(--ease);
}

.page-products .lib-key .key-index {
  color: var(--cyan);
  font-size: 12px;
}

.page-products .lib-key:hover {
  border-color: var(--cyan);
  background: #143149;
  transform: translateY(-2px);
}

.page-products .lib-key:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 3px var(--cyan);
}

.page-products .lib-hero-note {
  font-size: 12px;
  color: var(--muted-text);
  letter-spacing: 0.06em;
}

.page-products .lib-hero-fig {
  width: 100%;
}

.page-products .media-frame {
  display: block;
  overflow: hidden;
  background: var(--console);
  border: 1px solid var(--line);
  clip-path: var(--chamfer-panel);
}

.page-products .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 章节通用 ---------- */
.page-products .section {
  padding-block: clamp(40px, 6vw, 76px);
  border-top: 1px solid var(--line);
}

.page-products .section-head {
  max-width: 62ch;
  margin-bottom: clamp(24px, 3vw, 38px);
}

.page-products .section-title {
  font-size: clamp(24px, 3.6vw, 38px);
  font-weight: 900;
  color: var(--paper);
  margin-bottom: 14px;
}

.page-products .lede {
  font-size: 16px;
  color: #B9CCD8;
}

/* ---------- 检索与信息带 ---------- */
.page-products .lib-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: start;
}

.page-products .lib-filter {
  background: var(--deep-teal);
  border: 1px solid var(--line);
  padding: 18px 16px;
  clip-path: var(--chamfer-panel);
}

.page-products .filter-group + .filter-group {
  margin-top: 18px;
}

.page-products .label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--gold);
  margin-bottom: 10px;
}

.page-products .filter-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.page-products .lib-chip {
  font-family: var(--font-body);
  font-size: 13px;
  padding: 7px 12px;
  background: var(--chip-bg);
  color: #C6D8E2;
  border: 1px solid var(--line);
  cursor: pointer;
  clip-path: var(--chamfer-chip);
  transition: color var(--fast) var(--ease), border-color var(--fast) var(--ease), background var(--fast) var(--ease);
}

.page-products .lib-chip:hover {
  color: var(--ice);
  border-color: var(--cyan);
}

.page-products .lib-chip.is-active {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
  font-weight: 700;
}

.page-products .lib-chip:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 3px var(--ink);
}

.page-products .filter-note {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  color: var(--muted-text);
}

.page-products .band-head {
  display: none;
}

.page-products .lib-bands {
  display: grid;
  gap: 12px;
}

.page-products .game-band {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  padding: 16px 18px;
  background: var(--band-bg);
  border: 1px solid var(--line);
  clip-path: var(--chamfer-panel);
  transition: border-color var(--fast) var(--ease), transform var(--fast) var(--ease), background var(--fast) var(--ease);
}

.page-products .game-band:hover {
  border-color: var(--cyan);
  background: #102740;
  transform: translateY(-2px);
}

.page-products .band-title {
  font-size: 19px;
  font-weight: 800;
  color: var(--paper);
  margin: 8px 0 6px;
}

.page-products .band-meta {
  font-size: 12px;
  color: var(--cyan);
  letter-spacing: 0.04em;
}

.page-products .badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  padding: 3px 8px;
  border: 1px solid var(--line);
  color: var(--ice);
  background: rgba(77, 227, 224, 0.08);
}

.page-products .badge--gold {
  color: var(--gold);
  border-color: rgba(246, 196, 83, 0.55);
  background: rgba(246, 196, 83, 0.1);
}

.page-products .badge--coral {
  color: var(--coral);
  border-color: rgba(255, 107, 94, 0.6);
  background: rgba(255, 107, 94, 0.1);
}

.page-products .spec-row {
  display: flex;
  gap: 8px;
  font-size: 13px;
  color: #C6D8E2;
  margin-bottom: 6px;
  line-height: 1.5;
}

.page-products .spec-key {
  flex: 0 0 auto;
  font-size: 11px;
  color: var(--muted-text);
  letter-spacing: 0.08em;
  padding-top: 2px;
}

.page-products .band-client p {
  font-size: 13.5px;
  color: #C6D8E2;
}

.page-products .band-size {
  font-size: 12px;
  color: var(--muted-text);
  margin-top: 4px;
}

.page-products .band-gift {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.page-products .band-link {
  font-size: 13px;
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(246, 196, 83, 0.5);
  padding-bottom: 1px;
}

.page-products .band-link:hover {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

.page-products .band-link:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 3px;
}

.page-products .bands-foot {
  font-size: 13px;
  color: var(--muted-text);
  padding: 12px 4px 0;
}

/* ---------- 礼包码对比 ---------- */
.page-products .lib-gift {
  background: linear-gradient(180deg, var(--ink), #0A1A2B 60%, var(--ink));
}

.page-products .gift-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  align-items: start;
}

.page-products .gift-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  background: var(--band-bg);
}

.page-products .gift-table {
  width: 100%;
  min-width: 700px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-products .gift-table thead th {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--gold);
  text-align: left;
  padding: 12px 14px;
  background: rgba(246, 196, 83, 0.1);
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

.page-products .gift-table tbody th {
  text-align: left;
  padding: 13px 14px;
  color: var(--paper);
  font-weight: 700;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

.page-products .gift-table tbody td {
  padding: 13px 14px;
  color: #C6D8E2;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.page-products .gift-table tbody tr:hover td,
.page-products .gift-table tbody tr:hover th {
  background: rgba(246, 196, 83, 0.07);
}

.page-products .gift-table .mono {
  font-family: var(--font-mono);
  color: var(--amber);
  letter-spacing: 0.04em;
}

.page-products .gift-note {
  margin-top: 16px;
  font-size: 13px;
  color: var(--muted-text);
  max-width: 68ch;
}

/* ---------- 收藏 ---------- */
.page-products .lib-favorites {
  background:
    radial-gradient(90% 70% at 100% 0%, rgba(74, 31, 61, 0.55), transparent 65%),
    var(--ink);
}

.page-products .fav-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-products .fav-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.page-products .fav-tile {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 8px;
  aspect-ratio: 1;
  padding: 12px;
  border: 1px solid var(--line);
  background: linear-gradient(150deg, #12304a, #0b1d31 70%);
  clip-path: var(--chamfer-chip);
  transition: border-color var(--fast) var(--ease), transform var(--fast) var(--ease);
}

.page-products .fav-tile:nth-child(3n + 2) {
  background: linear-gradient(150deg, #123a3c, #0b2029 70%);
}

.page-products .fav-tile:nth-child(3n + 3) {
  background: linear-gradient(150deg, #2a1b33, #101a2c 70%);
}

.page-products .fav-tile:hover {
  border-color: var(--gold);
  transform: translateY(-2px);
}

.page-products .fav-type {
  font-size: 10.5px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-products .fav-name {
  font-size: 15px;
  font-weight: 800;
  color: var(--paper);
  line-height: 1.3;
}

.page-products .fav-freq {
  font-size: 10.5px;
  color: var(--gold);
  letter-spacing: 0.06em;
}

.page-products .fav-side {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-products .fav-legend {
  padding: 18px;
  background: var(--deep-teal);
  border: 1px solid var(--line);
  clip-path: var(--chamfer-panel);
}

.page-products .fav-legend-list {
  list-style: none;
  padding: 0;
  margin: 0 0 16px;
  display: grid;
  gap: 10px;
  font-size: 13.5px;
  color: #C6D8E2;
}

.page-products .fav-legend-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  line-height: 1.6;
}

.page-products .dot {
  width: 8px;
  height: 8px;
  margin-top: 8px;
  flex: 0 0 auto;
  transform: rotate(45deg);
}

.page-products .dot--cyan { background: var(--cyan); }
.page-products .dot--gold { background: var(--gold); }
.page-products .dot--coral { background: var(--coral); }

.page-products .btn {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 14px;
  padding: 11px 20px;
  text-decoration: none;
  border: 1px solid var(--line);
  color: var(--paper);
  background: transparent;
  clip-path: var(--chamfer-btn);
  transition: border-color var(--fast) var(--ease), background var(--fast) var(--ease), color var(--fast) var(--ease);
}

.page-products .btn--ghost:hover {
  border-color: var(--cyan);
  color: var(--ice);
  background: rgba(77, 227, 224, 0.08);
}

.page-products .btn--primary {
  background: var(--cyan);
  color: var(--ink);
  border-color: var(--cyan);
}

.page-products .btn--primary:hover {
  background: var(--ice);
  border-color: var(--ice);
}

.page-products .btn:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 3px var(--ink);
}

/* ---------- 旧版入口 ---------- */
.page-products .lib-legacy {
  background: linear-gradient(180deg, var(--ink), #0b1526);
}

.page-products .lib-legacy-panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  padding: clamp(20px, 4vw, 40px);
  background:
    linear-gradient(135deg, rgba(255, 107, 94, 0.12), transparent 55%),
    var(--wine);
  border: 1px solid rgba(255, 107, 94, 0.35);
  clip-path: var(--chamfer-panel);
}

.page-products .legacy-check {
  margin-top: 20px;
  border: 1px solid rgba(233, 242, 245, 0.22);
  padding: 0;
  background: rgba(7, 17, 31, 0.45);
}

.page-products .legacy-check summary {
  cursor: pointer;
  padding: 14px 16px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 15px;
  color: var(--paper);
  list-style: none;
}

.page-products .legacy-check summary::-webkit-details-marker {
  display: none;
}

.page-products .legacy-check summary::before {
  content: "＋";
  color: var(--coral);
  margin-right: 10px;
  font-family: var(--font-mono);
}

.page-products .legacy-check[open] summary::before {
  content: "－";
}

.page-products .legacy-check summary:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: -3px;
}

.page-products .legacy-list {
  list-style: none;
  margin: 0;
  padding: 0 16px 6px;
  display: grid;
  gap: 12px;
}

.page-products .legacy-list li {
  font-size: 14px;
  color: #DCE8EE;
  line-height: 1.7;
  padding-bottom: 12px;
  border-bottom: 1px dashed rgba(233, 242, 245, 0.18);
}

.page-products .legacy-list li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.page-products .legacy-k {
  display: block;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--gold);
  margin-bottom: 4px;
}

.page-products .legacy-foot {
  margin-top: 18px;
  font-size: 12px;
  color: rgba(233, 242, 245, 0.7);
  letter-spacing: 0.06em;
}

/* ---------- 客户端与配置 ---------- */
.page-products .lib-clients {
  background: var(--ink);
}

.page-products .clients-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: center;
}

.page-products .clients-sub {
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 800;
  color: var(--paper);
  margin-bottom: 12px;
}

.page-products .clients-copy p {
  font-size: 15px;
  color: #B9CCD8;
  margin-bottom: 16px;
  max-width: 52ch;
}

.page-products .clients-points {
  list-style: none;
  padding: 0;
  margin: 0 0 20px;
  display: grid;
  gap: 10px;
  font-size: 14px;
  color: #C6D8E2;
}

.page-products .clients-points li {
  display: flex;
  gap: 12px;
  align-items: baseline;
  border-left: 2px solid var(--cyan);
  padding-left: 12px;
}

.page-products .clients-points .mono {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-products .spec-panel {
  margin-top: 28px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  padding: clamp(18px, 3vw, 30px);
  background: var(--console);
  border: 1px solid var(--line);
  clip-path: var(--chamfer-panel);
}

.page-products .spec-panel-copy p {
  font-size: 14.5px;
  color: #B9CCD8;
  margin-bottom: 12px;
  max-width: 56ch;
}

.page-products .spec-chart {
  width: 100%;
  height: auto;
  display: block;
}

/* ---------- 下一步 ---------- */
.page-products .lib-next {
  background: linear-gradient(180deg, #0A1A2B, var(--ink));
}

.page-products .next-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-products .next-list li {
  display: grid;
  gap: 6px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  background: var(--band-bg);
  clip-path: var(--chamfer-chip);
}

.page-products .next-list a {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 15.5px;
  color: var(--cyan);
  text-decoration: none;
}

.page-products .next-list a:hover {
  color: var(--ice);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-products .next-list a:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 3px;
}

.page-products .next-list span {
  font-size: 13px;
  color: var(--muted-text);
  line-height: 1.6;
}

/* ---------- 桌面增强 ---------- */
@media (min-width: 760px) {
  .page-products .lib-keys {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-products .fav-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .next-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-products .lib-hero-grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  }

  .page-products .lib-layout {
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 28px;
  }

  .page-products .lib-filter {
    position: sticky;
    top: 92px;
  }

  .page-products .band-head {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 16px;
    padding: 0 18px 6px;
    font-family: var(--font-mono);
    font-size: 10.5px;
    letter-spacing: 0.14em;
    color: var(--muted-text);
  }

  .page-products .band-head span:nth-child(1) { grid-column: span 4; }
  .page-products .band-head span:nth-child(2) { grid-column: span 3; }
  .page-products .band-head span:nth-child(3) { grid-column: span 3; }
  .page-products .band-head span:nth-child(4) { grid-column: span 2; }

  .page-products .game-band {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 16px;
    align-items: center;
  }

  .page-products .band-name { grid-column: span 4; }
  .page-products .band-spec { grid-column: span 3; }
  .page-products .band-client { grid-column: span 3; }
  .page-products .band-gift {
    grid-column: span 2;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .page-products .gift-layout {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    gap: 28px;
  }

  .page-products .fav-layout {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.85fr);
    gap: 28px;
  }

  .page-products .lib-legacy-panel {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: center;
  }

  .page-products .clients-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr);
    gap: 32px;
  }

  .page-products .spec-panel {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
    gap: 32px;
  }
}

@media (min-width: 1160px) {
  .page-products .fav-grid {
    gap: 12px;
  }

  .page-products .next-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .lib-key,
  .page-products .lib-chip,
  .page-products .game-band,
  .page-products .fav-tile,
  .page-products .btn {
    transition: none;
  }

  .page-products .lib-key:hover,
  .page-products .game-band:hover,
  .page-products .fav-tile:hover {
    transform: none;
  }
}