.page-products {
  --mx-cols: 1fr 56px 56px;
  background: var(--warm);
  color: var(--graphite);
  font-family: var(--font-body);
}

.page-products .band {
  padding-block: clamp(44px, 6vw, 88px);
}

.page-products .sec-head {
  max-width: 44em;
  margin-bottom: clamp(22px, 3vw, 38px);
}

.page-products .sec-head h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(25px, 3.4vw, 38px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  margin: 10px 0 14px;
}

.page-products .sec-head p {
  margin: 0;
  font-size: clamp(16px, 1.7vw, 17px);
  line-height: 1.75;
  opacity: 0.82;
}

.page-products .sec-head--invert h2,
.page-products .sec-head--invert p {
  color: var(--paper);
}

.page-products .sec-head--invert p {
  opacity: 0.86;
}

.page-products .eyebrow {
  margin: 0;
  letter-spacing: 0.08em;
}

.page-products .eyebrow--mint {
  color: var(--mint);
}

.page-products .inline-code {
  font-size: 0.92em;
  background: rgba(23, 70, 209, 0.08);
  border-bottom: 1px solid var(--line);
  padding: 1px 4px;
  white-space: nowrap;
}

/* ---------- 首屏 ---------- */
.page-products .tool-hero {
  display: grid;
  gap: var(--gutter);
  padding-block: clamp(24px, 4vw, 52px) clamp(8px, 2vw, 20px);
}

.page-products .tool-hero__lead h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(28px, 5vw, 52px);
  line-height: 1.14;
  letter-spacing: -0.015em;
  margin: 12px 0 18px;
  max-width: 22em;
}

.page-products .tool-hero__intro {
  margin: 0;
  max-width: 34em;
  font-size: clamp(16px, 1.8vw, 17px);
  line-height: 1.8;
  opacity: 0.86;
}

.page-products .hero-jump {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
}

.page-products .hero-jump a {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  text-decoration: none;
  color: var(--graphite);
  border: 2px solid var(--graphite);
  background: var(--paper);
  padding: 7px 12px;
  box-shadow: 3px 3px 0 var(--graphite);
}

.page-products .hero-jump a:hover,
.page-products .hero-jump a:focus-visible {
  background: var(--nav-blue);
  color: #fff;
  border-color: var(--graphite);
}

.page-products .tool-hero__readout {
  background: var(--ink);
  color: var(--paper);
  border: var(--bd);
  box-shadow: var(--shadow-hard);
  padding: 20px 18px 18px;
}

.page-products .readout__title {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--mint);
}

.page-products .readout__grid {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 12px;
}

.page-products .readout__item dt {
  font-size: 12px;
  letter-spacing: 0.04em;
  color: rgba(250, 247, 240, 0.62);
  margin-bottom: 4px;
}

.page-products .readout__item dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(16px, 2vw, 20px);
  font-weight: 600;
  color: var(--paper);
  border-bottom: 1px solid var(--line);
  padding-bottom: 3px;
  display: inline-block;
}

.page-products .readout__note {
  margin: 18px 0 0;
  font-size: 12.5px;
  line-height: 1.65;
  color: rgba(250, 247, 240, 0.6);
}

/* ---------- 安装 ---------- */
.page-products .flow-figure {
  margin: 0 0 clamp(24px, 3vw, 40px);
  border: var(--bd);
  background: var(--paper);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

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

.page-products .media-frame__label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--rock);
  border-top: 2px solid var(--graphite);
  padding: 8px 12px;
  background: var(--paper);
}

.page-products .install-grid {
  display: grid;
  gap: clamp(24px, 3vw, 40px);
}

.page-products .steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-products .step {
  position: relative;
  padding: 6px 0 26px 62px;
}

.page-products .step::before {
  content: "";
  position: absolute;
  left: 22px;
  top: 58px;
  bottom: 0;
  border-left: 2px dashed var(--line);
}

.page-products .step:last-child::before {
  display: none;
}

.page-products .step__num {
  position: absolute;
  left: 0;
  top: 0;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  background: var(--nav-blue);
  border: var(--bd);
  box-shadow: var(--shadow-soft);
}

.page-products .step:nth-child(2) .step__num {
  background: var(--moss);
}

.page-products .step:nth-child(3) .step__num {
  background: var(--ink);
  color: var(--mint);
}

.page-products .step h3 {
  font-family: var(--font-display);
  font-size: clamp(18px, 2.1vw, 21px);
  font-weight: 800;
  margin: 2px 0 8px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
}

.page-products .step__time {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  color: var(--rock);
  border: 1px solid var(--line);
  padding: 2px 6px;
  white-space: nowrap;
}

.page-products .step p {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
}

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

.page-products .stuck {
  margin-top: 12px;
  border-left: 3px solid var(--orange);
  background: var(--paper);
  padding: 10px 14px;
}

.page-products .stuck summary {
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--graphite);
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

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

.page-products .stuck summary::before {
  content: "+";
  display: inline-grid;
  place-items: center;
  width: 18px;
  height: 18px;
  border: 2px solid var(--graphite);
  font-size: 12px;
  line-height: 1;
  background: var(--warm);
}

.page-products .stuck[open] summary::before {
  content: "−";
  background: var(--orange);
  color: #fff;
}

.page-products .stuck p {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  opacity: 0.85;
}

.page-products .side-note {
  display: grid;
  gap: 18px;
  align-content: start;
}

.page-products .side-note__card {
  border: var(--bd);
  background: var(--ink);
  color: var(--paper);
  box-shadow: var(--shadow-hard);
  padding: 18px;
}

.page-products .side-note__tag {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mint);
}

.page-products .side-note__text {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(250, 247, 240, 0.88);
}

.page-products .side-note__text a {
  color: var(--mint);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-products .phone-figure {
  margin: 0;
  border: var(--bd);
  background: var(--paper);
  overflow: hidden;
}

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

/* ---------- 适配范围 ---------- */
.page-products .band--spec {
  background: var(--ink);
  color: var(--paper);
  border-block: var(--bd);
}

.page-products .cap-grid {
  margin: 0;
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1fr);
}

.page-products .cap {
  border: 2px solid rgba(185, 198, 242, 0.45);
  padding: 16px 16px 18px;
  background: rgba(250, 247, 240, 0.04);
}

.page-products .cap dt {
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--mint);
  font-family: var(--font-mono);
  margin-bottom: 8px;
}

.page-products .cap dd {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: clamp(18px, 2.4vw, 24px);
  font-weight: 600;
  color: var(--paper);
  border-bottom: 1px solid var(--mint);
  display: inline-block;
  padding-bottom: 3px;
}

.page-products .cap p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(250, 247, 240, 0.72);
}

.page-products .spec-tail {
  margin: 24px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(250, 247, 240, 0.78);
  border-left: 3px solid var(--mint);
  padding-left: 14px;
}

/* ---------- 四模块矩阵 ---------- */
.page-products .mx {
  border: var(--bd);
  background: var(--paper);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

.page-products .mx__head {
  display: grid;
  grid-template-columns: var(--mx-cols);
  gap: 6px;
  align-items: center;
  background: var(--ink);
  color: var(--paper);
  padding: 10px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
}

.page-products .mx__head span:nth-child(2),
.page-products .mx__head span:nth-child(3) {
  text-align: center;
  color: var(--mint);
}

.page-products .mx__head-desc {
  display: none;
}

.page-products .mx__row {
  display: grid;
  grid-template-columns: var(--mx-cols);
  gap: 6px;
  align-items: center;
  padding: 14px 12px;
  border-top: 1px solid var(--line);
}

.page-products .mx__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
}

.page-products .mx__cell {
  display: flex;
  justify-content: center;
}

.page-products .mk {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--graphite);
  box-sizing: border-box;
}

.page-products .mk--on {
  background: var(--mint);
}

.page-products .mk--half {
  background: linear-gradient(135deg, var(--mint) 0 50%, transparent 50% 100%);
}

.page-products .mx__desc {
  grid-column: 1 / -1;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(28, 31, 36, 0.72);
  padding-top: 2px;
}

.page-products .mx__desc a {
  color: var(--nav-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-products .matrix-figure {
  margin: clamp(20px, 3vw, 32px) 0 0;
  border: var(--bd);
  background: var(--warm);
  overflow: hidden;
}

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

.page-products .matrix-summary {
  margin: 22px 0 0;
  font-size: 16px;
  line-height: 1.8;
  max-width: 40em;
  border-left: 4px solid var(--nav-blue);
  padding-left: 14px;
}

/* ---------- 旧路径 ---------- */
.page-products .band--legacy {
  background: var(--warm);
}

.page-products .legacy-layout {
  display: grid;
  gap: clamp(24px, 3vw, 44px);
}

.page-products .legacy-copy h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(25px, 3.4vw, 38px);
  line-height: 1.22;
  margin: 10px 0 16px;
}

.page-products .legacy-copy > p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.8;
  opacity: 0.86;
}

.page-products .legacy-rules {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-products .legacy-rules li {
  border-left: 3px solid var(--moss);
  padding-left: 12px;
  font-size: 15px;
  line-height: 1.75;
}

.page-products .legacy-rules strong {
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--moss);
}

.page-products .legacy-side {
  display: grid;
  gap: 20px;
  align-content: start;
}

.page-products .legacy-figure {
  margin: 0;
  border: var(--bd);
  background: var(--paper);
  overflow: hidden;
}

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

.page-products .legacy-map {
  border: var(--bd);
  background: var(--paper);
  padding: 14px;
  display: grid;
  gap: 10px;
}

.page-products .legacy-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 34px minmax(0, 1fr);
  align-items: center;
  gap: 6px;
}

.page-products .legacy-old,
.page-products .legacy-new {
  font-size: 12.5px;
  padding: 6px 8px;
  overflow-wrap: anywhere;
}

.page-products .legacy-old {
  background: rgba(79, 107, 74, 0.12);
  border: 2px solid var(--moss);
  color: var(--moss);
}

.page-products .legacy-new {
  background: rgba(43, 227, 160, 0.14);
  border: 2px solid var(--nav-blue);
  color: var(--nav-blue);
}

.page-products .legacy-arrow {
  position: relative;
  height: 16px;
  border-top: 2px solid var(--graphite);
  border-right: 2px solid var(--graphite);
}

.page-products .legacy-arrow::after {
  content: "";
  position: absolute;
  right: -1px;
  bottom: -5px;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--graphite);
  border-bottom: 2px solid var(--graphite);
  transform: rotate(45deg);
  transform-origin: 100% 50%;
}

/* ---------- 反馈 ---------- */
.page-products .band--feedback {
  background: var(--paper);
  border-block: var(--bd);
}

.page-products .fb-grid {
  display: grid;
  gap: 16px;
}

.page-products .fb-card {
  border: var(--bd);
  padding: 18px;
  background: var(--warm);
}

.page-products .fb-card__tag {
  display: inline-block;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  padding: 5px 10px;
  background: var(--nav-blue);
  color: #fff;
  border: 2px solid var(--graphite);
}

.page-products .fb-card__tag--client {
  background: var(--ink);
  color: var(--mint);
}

.page-products .fb-steps {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 10px;
  font-size: 15px;
  line-height: 1.75;
}

.page-products .fb-steps li::marker {
  font-family: var(--font-mono);
  color: var(--nav-blue);
}

.page-products .path-strip {
  margin-top: 20px;
  border: var(--bd);
  border-left: 8px solid var(--orange);
  background: var(--warm);
  padding: 16px 18px;
}

.page-products .path-strip__label {
  margin: 0 0 8px;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--clay);
  font-family: var(--font-mono);
}

.page-products .path-strip__value {
  margin: 0 0 8px;
  font-size: clamp(17px, 2.4vw, 22px);
  font-weight: 600;
  color: var(--graphite);
  border-bottom: 1px solid var(--line);
  display: inline-block;
  padding-bottom: 4px;
  overflow-wrap: anywhere;
}

.page-products .path-strip__hint {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  opacity: 0.78;
}

.page-products .fb-figure {
  margin: clamp(20px, 3vw, 32px) 0 0;
  border: var(--bd);
  background: var(--warm);
  overflow: hidden;
}

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

.page-products .fb-sla {
  margin: 20px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(28, 31, 36, 0.82);
}

.page-products .fb-sla a {
  color: var(--nav-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 常见情形 ---------- */
.page-products .case-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1fr);
}

.page-products .case {
  border: var(--bd);
  background: var(--warm);
  padding: 16px 16px 18px;
  box-shadow: var(--shadow-soft);
}

.page-products .case__no {
  margin: 0 0 10px;
  font-size: 12px;
  color: var(--rock);
  display: inline-block;
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
}

.page-products .case h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  margin: 0 0 8px;
}

.page-products .case p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  opacity: 0.84;
}

/* ---------- 帮助 ---------- */
.page-products .band--help {
  background: var(--ink);
  border-top: var(--bd);
}

.page-products .help-panel {
  display: grid;
  gap: 24px;
  border: 2px solid rgba(185, 198, 242, 0.4);
  padding: clamp(20px, 3vw, 36px);
  background:
    repeating-linear-gradient(90deg, rgba(185, 198, 242, 0.09) 0 1px, transparent 1px 48px),
    linear-gradient(120deg, rgba(23, 70, 209, 0.28), rgba(11, 21, 38, 0) 60%);
}

.page-products .help-panel__copy h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 3vw, 34px);
  line-height: 1.24;
  color: var(--paper);
  margin: 10px 0 12px;
}

.page-products .help-panel__copy p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(250, 247, 240, 0.8);
  max-width: 32em;
}

.page-products .help-panel__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-content: start;
}

.page-products .help-panel__note {
  flex-basis: 100%;
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.8;
  color: rgba(250, 247, 240, 0.62);
  border-top: 1px dashed rgba(185, 198, 242, 0.4);
  padding-top: 12px;
}

.page-products a:focus-visible,
.page-products summary:focus-visible {
  outline: 2px solid var(--nav-blue);
  outline-offset: 2px;
}

/* ---------- 桌面 ---------- */
@media (min-width: 720px) {
  .page-products .cap-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

@media (min-width: 900px) {
  .page-products {
    --mx-cols: minmax(0, 1fr) 86px 86px minmax(0, 1.9fr);
  }

  .page-products .tool-hero {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: start;
    gap: clamp(24px, 3vw, 48px);
  }

  .page-products .install-grid {
    grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-products .side-note {
    position: sticky;
    top: 84px;
  }

  .page-products .mx {
    box-shadow: var(--shadow-hard);
  }

  .page-products .mx__head {
    padding: 12px 18px;
  }

  .page-products .mx__row {
    padding: 16px 18px;
  }

  .page-products .mx__head-desc {
    display: block;
  }

  .page-products .mx__desc {
    grid-column: auto;
    padding-top: 0;
  }

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

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

  .page-products .help-panel {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: center;
  }

  .page-products .help-panel__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1100px) {
  .page-products .cap-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products * {
    transition: none !important;
    animation: none !important;
  }
}
<<<END>>>