.page-products {
  --prod-line: rgba(207, 198, 179, 0.6);
  --prod-line-strong: #CFC6B3;
  --prod-pad: clamp(3rem, 7vw, 6rem);
  --prod-gap: clamp(1.5rem, 4vw, 3.25rem);
  background: var(--paper);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */

.page-products .prod-hero {
  position: relative;
  overflow: hidden;
  padding-block: calc(var(--header-h) + clamp(2.25rem, 6vw, 4.5rem)) clamp(2.5rem, 6vw, 5rem);
  background: var(--paper);
}

.page-products .prod-grid-lines {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(to right, var(--prod-line) 1px, transparent 1px);
  background-size: calc(100% / 6) 100%;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, 0.15) 78%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, 0.15) 78%, transparent 100%);
}

.page-products .prod-hero .door-light {
  position: absolute;
  top: 0;
  right: 8%;
  width: min(420px, 55vw);
  height: 100%;
  pointer-events: none;
}

.page-products .prod-hero-inner {
  position: relative;
  z-index: 1;
}

.page-products .prod-kicker {
  margin: 1.5rem 0 1rem;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  color: var(--cinnabar);
  text-transform: uppercase;
}

.page-products .prod-title {
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: clamp(1.95rem, 5.2vw, 4rem);
  line-height: 1.2;
  letter-spacing: 0.005em;
  margin: 0 0 1.35rem;
  max-width: 20em;
}

.page-products .prod-lede {
  font-size: clamp(1rem, 1.5vw, 1.1rem);
  line-height: 1.9;
  color: var(--ink-soft);
  max-width: 44rem;
  margin: 0 0 clamp(2rem, 4vw, 3rem);
}

.page-products .prod-facts {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(10.5rem, 1fr));
  gap: 1.15rem 1.5rem;
  max-width: 46rem;
  margin: 0;
  padding: 1.35rem 0 0;
  border-top: 1px solid var(--prod-line-strong);
}

.page-products .prod-fact {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.page-products .prod-fact-num {
  font-size: clamp(1.6rem, 3.2vw, 2.2rem);
  line-height: 1;
  color: var(--cinnabar);
}

.page-products .prod-fact-text {
  font-size: 0.85rem;
  line-height: 1.65;
  color: var(--ink-soft);
}

/* ---------- 通用章节 ---------- */

.page-products .prod-section {
  padding-block: var(--prod-pad);
}

.page-products .section-num {
  margin: 0;
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  color: var(--cinnabar);
}

.page-products .section-title {
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: clamp(1.55rem, 3.6vw, 2.5rem);
  line-height: 1.35;
  margin: 0.65rem 0 0.85rem;
}

.page-products .section-lede {
  margin: 0;
  max-width: 44rem;
  font-size: 0.98rem;
  line-height: 1.9;
  color: var(--ink-soft);
}

/* ---------- 六类能力 ---------- */

.page-products .prod-abilities {
  background: var(--paper);
}

.page-products .ability-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--prod-gap);
  margin-top: clamp(2rem, 4vw, 3rem);
}

.page-products .ability-rail .rail-title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--ink-soft);
  margin: 0 0 0.75rem;
}

.page-products .ability-rail .rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 0.35rem;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-products .ability-rail .rail-link {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  white-space: nowrap;
  padding: 0.5rem 0.5rem 0.55rem;
  font-size: 0.88rem;
  color: var(--ink-soft);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color var(--fast) var(--ease), border-color var(--fast) var(--ease);
}

.page-products .ability-rail .rail-link .num {
  font-size: 0.75rem;
  color: var(--rule);
  transition: color var(--fast) var(--ease);
}

.page-products .ability-rail .rail-link:hover {
  color: var(--ink);
}

.page-products .ability-rail .rail-link:hover .num {
  color: var(--cinnabar);
}

.page-products .ability-rail .rail-link[aria-current="true"] {
  color: var(--cinnabar);
  border-bottom-color: var(--cinnabar);
}

.page-products .ability-rail .rail-link[aria-current="true"] .num {
  color: var(--cinnabar);
}

.page-products .ability-rail .rail-link:focus-visible {
  outline: 2px solid var(--cinnabar);
  outline-offset: 2px;
}

.page-products .ability-list {
  list-style: none;
  margin: 0;
  padding: 0;
  min-width: 0;
}

.page-products .ability {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.6rem;
  padding-block: clamp(1.75rem, 4vw, 2.75rem);
  border-top: 1px solid var(--prod-line-strong);
}

.page-products .ability:last-child {
  border-bottom: 1px solid var(--prod-line-strong);
}

.page-products .ability-no {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.page-products .ability-no .num {
  font-size: 1.5rem;
  line-height: 1;
  letter-spacing: 0.05em;
  color: var(--cinnabar);
}

.page-products .ability-axis {
  display: block;
  height: 1px;
  flex: 1;
  background: var(--prod-line-strong);
}

.page-products .ability-head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-bottom: 0.8rem;
}

.page-products .ability-title {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(1.2rem, 2.4vw, 1.6rem);
  line-height: 1.4;
  margin: 0;
}

.page-products .ability-desc {
  margin: 0 0 0.9rem;
  max-width: 42rem;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--ink);
}

.page-products .ability-desc a {
  color: var(--cinnabar);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-products .ability-scene {
  margin: 0;
  max-width: 42rem;
  padding-left: 1rem;
  border-left: 2px solid var(--celadon);
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-products .scene-tag {
  display: inline-block;
  margin-right: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--celadon);
}

.page-products .ability-figure {
  margin: 1.35rem 0 0;
  max-width: 33rem;
  padding: 0.5rem;
  border: 1px solid var(--prod-line-strong);
  background: var(--paper-edge);
}

.page-products .ability-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 覆盖范围 ---------- */

.page-products .prod-range {
  background: var(--paper-edge);
}

.page-products .range-figure {
  margin: clamp(1.75rem, 4vw, 2.5rem) 0 0;
}

.page-products .range-figure img {
  display: block;
  width: 100%;
  height: clamp(11rem, 30vw, 20rem);
  object-fit: cover;
  border: 1px solid var(--prod-line-strong);
}

.page-products .range-figure figcaption {
  margin-top: 0.65rem;
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--ink-soft);
}

.page-products .range-board {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: clamp(2rem, 4vw, 2.75rem);
}

.page-products .range-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-products .range-chip {
  cursor: pointer;
  padding: 0.45rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--rule);
  background: var(--paper);
  font-size: 0.85rem;
  line-height: 1.4;
  color: var(--ink-soft);
  transition: background var(--fast) var(--ease), color var(--fast) var(--ease), border-color var(--fast) var(--ease);
}

.page-products .range-chip:hover {
  border-color: var(--cinnabar);
  color: var(--cinnabar);
}

.page-products .range-radio:checked + .range-chip {
  background: var(--cinnabar);
  border-color: var(--cinnabar);
  color: var(--paper);
}

.page-products .range-radio:focus-visible + .range-chip {
  outline: 2px solid var(--cinnabar);
  outline-offset: 2px;
}

.page-products .range-body {
  flex: 1 0 100%;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--prod-gap);
  margin-top: 1.35rem;
}

.page-products #rg-zj:checked ~ .range-body .range-table tbody tr:not([data-region="zj"]),
.page-products #rg-east:checked ~ .range-body .range-table tbody tr:not([data-region="east"]),
.page-products #rg-other:checked ~ .range-body .range-table tbody tr:not([data-region="other"]) {
  display: none;
}

.page-products .range-table-wrap {
  overflow-x: auto;
  min-width: 0;
}

.page-products .range-table {
  width: 100%;
  min-width: 32rem;
  border-collapse: collapse;
  border: 1px solid var(--prod-line-strong);
  background: var(--paper);
}

.page-products .range-table caption {
  text-align: left;
  padding: 0.7rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
  background: var(--paper);
  border: 1px solid var(--prod-line-strong);
  border-bottom: none;
}

.page-products .range-table th,
.page-products .range-table td {
  padding: 0.9rem 1rem;
  text-align: left;
  vertical-align: top;
  font-size: 0.9rem;
  line-height: 1.7;
  border-bottom: 1px solid var(--prod-line-strong);
}

.page-products .range-table thead th {
  background: var(--paper-edge);
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  font-weight: 600;
  color: var(--ink-soft);
}

.page-products .range-table tbody th {
  font-weight: 600;
  color: var(--ink);
}

.page-products .range-table tbody tr:nth-child(even) {
  background: var(--paper-edge);
}

.page-products .range-table tbody tr:last-child th,
.page-products .range-table tbody tr:last-child td {
  border-bottom: none;
}

.page-products .range-side {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  min-width: 0;
}

.page-products .range-diagram {
  border: 1px solid var(--prod-line-strong);
  background: var(--paper);
  padding: 1rem;
}

.page-products .range-diagram svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-products .ring {
  fill: none;
  stroke: var(--prod-line-strong);
  stroke-width: 1;
}

.page-products .ring-1 {
  stroke: var(--cinnabar);
  stroke-width: 1.5;
}

.page-products .ring-2 {
  stroke: var(--celadon);
}

.page-products .ring-dot {
  fill: var(--cinnabar);
}

.page-products .ring-label {
  font-family: var(--font-sans);
  font-size: 15px;
  fill: var(--ink-soft);
}

.page-products .ring-label--main {
  fill: var(--cinnabar);
  font-weight: 600;
}

.page-products .range-side-note {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* ---------- 三步确认 ---------- */

.page-products .prod-method {
  background: var(--paper);
}

.page-products .step-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: clamp(2rem, 4vw, 2.75rem);
}

.page-products .step {
  padding: 1.35rem 1.25rem 1.2rem;
  border: 1px solid var(--prod-line-strong);
  border-top: 3px solid var(--cinnabar);
  background: var(--paper);
}

.page-products .step-tag {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--celadon);
  margin-bottom: 0.6rem;
}

.page-products .step .disclosure-btn {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  width: 100%;
  padding: 0;
  border: none;
  background: none;
  font: inherit;
  color: inherit;
  text-align: left;
  cursor: pointer;
}

.page-products .step .disclosure-btn:focus-visible {
  outline: 2px solid var(--cinnabar);
  outline-offset: 3px;
}

.page-products .step .disclosure-q {
  flex: 1;
  font-family: var(--font-serif);
  font-size: 1.18rem;
  line-height: 1.4;
}

.page-products .step .disclosure-icon {
  position: relative;
  flex: none;
  width: 1.05rem;
  height: 1.05rem;
  border: 1px solid var(--cinnabar);
  border-radius: 2px;
}

.page-products .step .disclosure-icon::before,
.page-products .step .disclosure-icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--cinnabar);
  transform: translate(-50%, -50%);
  transition: opacity var(--fast) var(--ease);
}

.page-products .step .disclosure-icon::before {
  width: 0.5rem;
  height: 1px;
}

.page-products .step .disclosure-icon::after {
  width: 1px;
  height: 0.5rem;
}

.page-products .step .disclosure-btn[aria-expanded="true"] .disclosure-icon::after {
  opacity: 0;
}

.page-products .step .disclosure-panel {
  margin-top: 0.9rem;
}

.page-products .step .disclosure-panel p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.9;
  color: var(--ink-soft);
}

.page-products .step .disclosure-panel a {
  color: var(--cinnabar);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 服务与响应 ---------- */

.page-products .prod-support {
  background: var(--indigo);
  color: var(--paper);
}

.page-products .prod-support .section-num {
  color: var(--amber);
}

.page-products .prod-support .section-title {
  color: var(--paper);
}

.page-products .prod-support .section-lede {
  color: rgba(246, 241, 231, 0.76);
}

.page-products .support-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: clamp(2rem, 4vw, 2.75rem);
}

.page-products .support-card {
  padding: 1.4rem 1.3rem;
  border: 1px solid rgba(207, 198, 179, 0.3);
  background: rgba(246, 241, 231, 0.045);
}

.page-products .support-card h3 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 1.15rem;
  line-height: 1.4;
  margin: 0 0 0.6rem;
  color: var(--paper);
}

.page-products .support-card p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.9;
  color: rgba(246, 241, 231, 0.74);
}

.page-products .support-contacts {
  list-style: none;
  margin: 2rem 0 0;
  padding: 1.5rem 0 0;
  border-top: 1px solid rgba(207, 198, 179, 0.26);
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.page-products .support-contacts li {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.3rem;
  min-width: 0;
}

.page-products .sc-key {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: rgba(246, 241, 231, 0.58);
}

.page-products .sc-value {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.page-products .sc-value--mono {
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

.page-products .support-contacts .copy-btn {
  margin-top: 0.4rem;
  padding: 0.28rem 0.8rem;
  border-radius: 999px;
  border: 1px solid rgba(217, 164, 65, 0.62);
  background: none;
  color: var(--amber);
  font-size: 0.76rem;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: background var(--fast) var(--ease), color var(--fast) var(--ease);
}

.page-products .support-contacts .copy-btn:hover {
  background: rgba(217, 164, 65, 0.16);
}

.page-products .support-contacts .copy-btn:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

.page-products .support-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.page-products .prod-support .btn-line {
  border-color: rgba(246, 241, 231, 0.42);
  color: var(--paper);
}

.page-products .prod-support .btn-line:hover {
  border-color: var(--amber);
  color: var(--amber);
}

.page-products .support-foot {
  margin: 1.75rem 0 0;
  max-width: 44rem;
  font-size: 0.88rem;
  line-height: 1.9;
  color: rgba(246, 241, 231, 0.66);
}

.page-products .support-foot a {
  color: var(--amber);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-products .back-top {
  margin-top: 1.75rem;
  border-color: rgba(246, 241, 231, 0.34);
  color: rgba(246, 241, 231, 0.86);
  background: none;
  cursor: pointer;
}

.page-products .back-top:hover {
  border-color: var(--amber);
  color: var(--amber);
}

/* ---------- 断点 ---------- */

@media (min-width: 640px) {
  .page-products .ability {
    grid-template-columns: 3.5rem minmax(0, 1fr);
    gap: 1.5rem;
  }

  .page-products .ability-no {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.7rem;
    align-self: stretch;
  }

  .page-products .ability-axis {
    flex: 1;
    width: 1px;
    height: auto;
    min-height: 2.5rem;
  }

  .page-products .ability-no .num {
    font-size: 1.7rem;
  }
}

@media (min-width: 820px) {
  .page-products .step-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.15rem;
    align-items: start;
  }

  .page-products .support-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.15rem;
  }

  .page-products .support-contacts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.5rem;
  }
}

@media (min-width: 900px) {
  .page-products .ability-layout {
    grid-template-columns: minmax(9.5rem, 1fr) minmax(0, 3fr);
  }

  .page-products .ability-rail {
    position: sticky;
    top: calc(var(--header-h) + 2.5rem);
    align-self: start;
  }

  .page-products .ability-rail .rail-list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
  }

  .page-products .ability-rail .rail-link {
    border-bottom: none;
    border-left: 2px solid transparent;
    padding: 0.55rem 0.25rem 0.55rem 0.75rem;
  }

  .page-products .ability-rail .rail-link[aria-current="true"] {
    border-bottom-color: transparent;
    border-left-color: var(--cinnabar);
  }

  .page-products .range-body {
    grid-template-columns: minmax(0, 2.4fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 1180px) {
  .page-products .ability-figure {
    max-width: 36rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .range-chip,
  .page-products .ability-rail .rail-link,
  .page-products .step .disclosure-icon::before,
  .page-products .step .disclosure-icon::after {
    transition: opacity var(--fast) var(--ease);
  }
}