.page-products {
  --prod-line: rgba(30, 92, 122, 0.6);
  --prod-panel: rgba(18, 60, 92, 0.55);
  --prod-stripe: rgba(18, 60, 92, 0.45);
}

/* ---------- 首屏 ---------- */
.page-products .hero {
  position: relative;
  padding-block: clamp(112px, 17vh, 172px) clamp(52px, 8vw, 88px);
  background:
    radial-gradient(120% 82% at 88% 0%, rgba(53, 224, 208, 0.16), transparent 58%),
    radial-gradient(90% 70% at 0% 100%, rgba(255, 107, 74, 0.09), transparent 62%),
    linear-gradient(180deg, var(--deep-sea) 0%, #08223a 68%, var(--abyss) 100%);
  border-bottom: 1px solid var(--prod-line);
  overflow: hidden;
}

.page-products .hero-grid {
  display: grid;
  gap: var(--space-s);
}

.page-products .hero .breadcrumb {
  margin-bottom: 22px;
}

.page-products .hero .eyebrow {
  margin-bottom: 18px;
}

.page-products .hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(44px, 9.5vw, 104px);
  line-height: 0.98;
  letter-spacing: 0.02em;
  color: var(--text);
}

.page-products .hero-lede {
  max-width: 44ch;
  margin: 24px 0 0;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--mist);
}

.page-products .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.page-products .hero-plate {
  border: 1px solid var(--tide);
  border-top: 3px solid var(--cyan);
  background: var(--prod-panel);
  padding: 24px 22px 20px;
}

.page-products .hero-plate-ver {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: clamp(40px, 8vw, 56px);
  font-weight: 500;
  letter-spacing: 0.08em;
  line-height: 1;
  color: var(--cyan);
}

.page-products .hero-facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-products .hero-facts li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--prod-line);
}

.page-products .hero-facts strong {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--lemon);
}

.page-products .hero-facts span {
  font-size: 13px;
  color: var(--fog);
}

.page-products .hero-plate-note {
  margin: 18px 0 0;
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

/* ---------- 通用区块头 ---------- */
.page-products .section-head {
  max-width: 62ch;
  margin-bottom: var(--space-s);
}

.page-products .section-head h2 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 4.4vw, 40px);
  line-height: 1.18;
  letter-spacing: 0.02em;
  color: var(--text);
}

.page-products .section-lede {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--fog);
}

/* ---------- 版本铭牌 ---------- */
.page-products .plate-band {
  border-bottom: 1px solid var(--prod-line);
}

.page-products .band-grid {
  display: grid;
  gap: var(--space-m);
  align-items: center;
}

.page-products .band-copy h2 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 4.4vw, 40px);
  line-height: 1.2;
  color: var(--text);
}

.page-products .band-copy > p {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--fog);
}

.page-products .cadence {
  display: grid;
  gap: 1px;
  margin: 28px 0 0;
  background: var(--prod-line);
  border: 1px solid var(--prod-line);
}

.page-products .cadence > div {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding: 13px 16px;
  background: var(--deep-sea);
}

.page-products .cadence dt {
  font-family: var(--font-serif);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-products .cadence dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.05em;
  color: var(--cyan);
}

.page-products .band-link {
  display: inline-block;
  margin-top: 24px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 208, 0.4);
  padding-bottom: 3px;
}

.page-products .band-link:hover,
.page-products .band-link:focus-visible {
  border-bottom-color: var(--cyan);
}

.page-products .plate-figure {
  max-width: 420px;
}

/* ---------- 对照台 ---------- */
.page-products .compare-section {
  background: linear-gradient(180deg, rgba(6, 24, 42, 0.7), transparent 40%);
}

.page-products .compare-figure {
  margin-bottom: var(--space-m);
}

.page-products .view-switch {
  display: inline-flex;
  gap: 4px;
  padding: 4px;
  margin-bottom: 26px;
  border: 1px solid var(--tide);
  border-radius: 999px;
  background: rgba(6, 24, 42, 0.65);
}

.page-products .view-switch input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  clip-path: inset(50%);
  overflow: hidden;
  white-space: nowrap;
}

.page-products .view-switch label {
  cursor: pointer;
  padding: 8px 20px;
  border-radius: 999px;
  font-size: 14px;
  color: var(--fog);
  transition: background 200ms var(--ease), color 200ms var(--ease);
}

.page-products .view-switch input:checked + label {
  background: var(--cyan);
  color: var(--abyss);
  font-weight: 600;
}

.page-products .view-switch input:focus-visible + label {
  outline: 2px solid var(--lemon);
  outline-offset: 3px;
}

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

.page-products .compare-row {
  padding: 18px 14px;
  border-bottom: 1px dashed var(--prod-line);
}

.page-products .compare-row:nth-child(even) {
  background: var(--prod-stripe);
}

.page-products .compare-dim {
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-products .compare-row.is-diff .compare-dim::after {
  content: "差异";
  display: inline-block;
  margin-left: 10px;
  padding: 1px 6px;
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--coral);
  border: 1px solid rgba(255, 107, 74, 0.6);
  border-radius: 2px;
  vertical-align: 1px;
}

.page-products .compare-self,
.page-products .compare-other {
  font-size: 15px;
  line-height: 1.72;
  color: var(--text);
}

.page-products .compare-other {
  color: rgba(232, 241, 245, 0.82);
}

.page-products .cmp-tag {
  display: block;
  margin-bottom: 5px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--fog);
}

.page-products .compare-seam {
  display: none;
}

.page-products .compare-wrap:has(#view-diff:checked) .compare-row.is-same {
  display: none;
}

/* ---------- 礼包台阶 ---------- */
.page-products .ladder {
  display: grid;
  gap: 16px;
}

.page-products .step {
  background: var(--chart);
  border: 1px solid var(--tide);
  border-left: 3px solid var(--tide);
  transition: transform 320ms var(--ease), border-color 200ms var(--ease);
}

.page-products .step--go {
  border-color: var(--lemon);
  border-left-color: var(--lemon);
  box-shadow: 0 20px 44px -30px rgba(255, 209, 102, 0.85);
}

.page-products .step-4 {
  opacity: 0.86;
}

.page-products .step summary {
  display: grid;
  gap: 6px;
  padding: 20px 18px 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-products .step-no {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 500;
  letter-spacing: 0.08em;
  line-height: 1;
  color: var(--cyan);
}

.page-products .step--go .step-no {
  color: var(--lemon);
}

.page-products .step-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: 0.03em;
  color: var(--text);
}

.page-products .step-state {
  font-size: 13px;
  color: var(--fog);
}

.page-products .step-body {
  padding: 0 18px 20px;
  border-top: 1px dashed var(--prod-line);
  margin-top: 2px;
  padding-top: 14px;
}

.page-products .step-body p {
  margin: 0 0 10px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mist);
}

.page-products .step-body p:last-child {
  margin-bottom: 0;
}

.page-products .step-do {
  color: var(--text) !important;
  font-weight: 600;
}

.page-products .ladder-figure {
  max-width: 320px;
  margin: 32px 0 0 auto;
}

/* ---------- 批次列表 ---------- */
.page-products .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 26px;
}

.page-products .filter-bar input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  clip-path: inset(50%);
  overflow: hidden;
  white-space: nowrap;
}

.page-products .filter-bar label {
  cursor: pointer;
  padding: 7px 16px;
  font-size: 13.5px;
  color: var(--fog);
  border: 1px solid var(--tide);
  border-radius: 2px;
  transition: color 200ms var(--ease), border-color 200ms var(--ease), background 200ms var(--ease);
}

.page-products .filter-bar input:checked + label {
  color: var(--abyss);
  background: var(--lemon);
  border-color: var(--lemon);
  font-weight: 600;
}

.page-products .filter-bar input:focus-visible + label {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

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

.page-products .batch-item {
  padding: 20px 18px;
  background: var(--prod-panel);
  border: 1px solid var(--tide);
}

.page-products .batch-item.is-off {
  opacity: 0.72;
}

.page-products .batch-top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.page-products .batch-id {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--fog);
}

.page-products .batch-servers {
  margin: 0 0 14px;
  font-size: 14px;
  color: var(--mist);
}

.page-products .batch-code {
  margin: 0 0 12px;
  padding: 12px 14px;
  border: 1px dashed var(--cyan);
  background: rgba(6, 24, 42, 0.7);
}

.page-products .batch-code span {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.12em;
  color: var(--cyan);
  word-break: break-all;
}

.page-products .batch-code--locked {
  border-color: var(--prod-line);
  background: transparent;
}

.page-products .batch-code--locked span {
  font-family: var(--font-body);
  font-size: 13.5px;
  letter-spacing: 0.02em;
  color: var(--fog);
}

.page-products .batch-hint {
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--fog);
}

.page-products .batch-section:has(#bf-live:checked) .batch-item:not(.is-live),
.page-products .batch-section:has(#bf-check:checked) .batch-item:not(.is-check),
.page-products .batch-section:has(#bf-off:checked) .batch-item:not(.is-off) {
  display: none;
}

/* ---------- 宽幅过渡 ---------- */
.page-products .wide-figure {
  margin: 0;
}

.page-products .wide-figure .figure-frame {
  border-inline: none;
}

/* ---------- 配置区 ---------- */
.page-products .config-grid {
  display: grid;
  gap: var(--space-m);
}

.page-products .config-copy h2 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 4.4vw, 38px);
  line-height: 1.2;
  color: var(--text);
}

.page-products .config-copy > p {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--fog);
}

.page-products .range-svg {
  display: block;
  width: 100%;
  max-width: 420px;
  height: auto;
  margin: 28px 0 8px;
}

.page-products .range-line {
  stroke: var(--tide);
  stroke-width: 2;
}

.page-products .range-dot {
  fill: var(--abyss);
  stroke: var(--cyan);
  stroke-width: 2;
}

.page-products .range-label {
  fill: var(--cyan);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
}

.page-products .range-tick {
  fill: var(--fog);
  font-family: var(--font-body);
  font-size: 10.5px;
}

.page-products .config-table {
  width: 100%;
  margin-top: 20px;
  border-collapse: collapse;
  font-size: 14.5px;
}

.page-products .config-caption {
  text-align: left;
  padding-bottom: 10px;
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-products .config-table th,
.page-products .config-table td {
  padding: 13px 12px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--prod-line);
}

.page-products .config-table thead th {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  font-weight: 500;
  color: var(--fog);
  border-bottom-color: var(--tide);
}

.page-products .config-table tbody th {
  font-weight: 600;
  color: var(--mist);
  white-space: nowrap;
}

.page-products .config-table tbody td {
  color: var(--text);
  line-height: 1.66;
}

.page-products .config-table tbody tr:nth-child(even) {
  background: var(--prod-stripe);
}

.page-products .config-note {
  margin: 18px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--fog);
}

.page-products .config-figure {
  max-width: 460px;
}

/* ---------- 收尾清单（奶油纸断点） ---------- */
.page-products .check-section {
  color: var(--brown);
}

.page-products .check-section .eyebrow {
  color: var(--coral);
}

.page-products .check-section .eyebrow::before {
  background: var(--coral);
}

.page-products .check-grid {
  display: grid;
  gap: var(--space-m);
  align-items: start;
}

.page-products .check-copy h2 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 4.4vw, 38px);
  line-height: 1.2;
  color: var(--brown);
}

.page-products .check-copy > p {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: #4a3f36;
}

.page-products .check-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-products .check-section .btn-ghost {
  color: var(--brown);
  border-color: rgba(23, 19, 16, 0.35);
  background: transparent;
}

.page-products .check-section .btn-ghost:hover,
.page-products .check-section .btn-ghost:focus-visible {
  border-color: var(--coral);
  color: var(--coral);
  background: rgba(255, 107, 74, 0.06);
}

.page-products .check-aside {
  margin: 22px 0 0;
  font-size: 13.5px;
  color: #6a5c50;
}

.page-products .check-aside a {
  color: #a33a1f;
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

.page-products .check-list li {
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(23, 19, 16, 0.16);
}

.page-products .check-list label {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 18px;
  cursor: pointer;
}

.page-products .check-list input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  clip-path: inset(50%);
  overflow: hidden;
  white-space: nowrap;
}

.page-products .check-box {
  flex: none;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  border: 2px solid rgba(23, 19, 16, 0.45);
  border-radius: 3px;
  position: relative;
  transition: background 160ms var(--ease), border-color 160ms var(--ease);
}

.page-products .check-box::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 0;
  width: 6px;
  height: 11px;
  border-right: 2px solid var(--paper);
  border-bottom: 2px solid var(--paper);
  transform: rotate(42deg) scale(0);
  transition: transform 160ms var(--ease);
}

.page-products .check-list input:checked + .check-box {
  background: #a33a1f;
  border-color: #a33a1f;
}

.page-products .check-list input:checked + .check-box::after {
  transform: rotate(42deg) scale(1);
}

.page-products .check-list input:focus-visible + .check-box {
  outline: 2px solid var(--coral);
  outline-offset: 3px;
}

.page-products .check-text {
  font-size: 15px;
  line-height: 1.7;
  color: #2f2721;
}

.page-products .check-text strong {
  display: block;
  margin-bottom: 3px;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--brown);
}

.page-products .check-list input:checked ~ .check-text {
  color: #6a5c50;
}

/* ---------- 桌面栅格 ---------- */
@media (min-width: 700px) {
  .page-products .batch-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-products .check-list {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 880px) {
  .page-products .hero-grid {
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: clamp(32px, 5vw, 72px);
    align-items: end;
  }

  .page-products .band-grid {
    grid-template-columns: 340px minmax(0, 1fr);
    gap: clamp(36px, 5vw, 72px);
  }

  .page-products .plate-figure {
    max-width: none;
  }

  .page-products .compare-head {
    display: grid;
    grid-template-columns: 140px minmax(0, 1fr) 30px minmax(0, 1fr);
    padding: 0 14px 12px;
    font-family: var(--font-mono);
    font-size: 11.5px;
    letter-spacing: 0.12em;
    color: var(--fog);
  }

  .page-products .compare-head span:nth-child(2) {
    padding-left: 18px;
  }

  .page-products .compare-head span:nth-child(4) {
    padding-left: 18px;
  }

  .page-products .compare-row {
    display: grid;
    grid-template-columns: 140px minmax(0, 1fr) 30px minmax(0, 1fr);
    align-items: stretch;
    padding: 18px 14px;
  }

  .page-products .compare-dim {
    margin-bottom: 0;
    padding-top: 2px;
  }

  .page-products .compare-self {
    padding-right: 18px;
  }

  .page-products .compare-other {
    padding-left: 18px;
  }

  .page-products .cmp-tag {
    display: none;
  }

  .page-products .compare-seam {
    display: block;
    position: relative;
  }

  .page-products .compare-seam::before {
    content: "";
    position: absolute;
    left: 50%;
    top: 2px;
    bottom: 2px;
    width: 1px;
    background: linear-gradient(180deg, var(--cyan), rgba(53, 224, 208, 0.12));
  }

  .page-products .compare-row:hover .compare-seam::before {
    background: var(--cyan);
  }

  .page-products .config-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: clamp(36px, 5vw, 72px);
    align-items: start;
  }

  .page-products .check-grid {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    gap: clamp(36px, 5vw, 72px);
  }
}

@media (min-width: 1040px) {
  .page-products .ladder {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
    padding-bottom: 104px;
  }

  .page-products .step:nth-child(1) {
    transform: translateY(96px);
  }

  .page-products .step:nth-child(2) {
    transform: translateY(64px);
  }

  .page-products .step:nth-child(3) {
    transform: translateY(32px);
  }

  .page-products .step:nth-child(4) {
    transform: translateY(0);
  }

  .page-products .ladder-figure {
    max-width: 360px;
    margin-top: -28px;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-products .step {
    transition: none;
  }

  .page-products .view-switch label,
  .page-products .filter-bar label,
  .page-products .check-box,
  .page-products .check-box::after {
    transition: none;
  }
}