.page-products {
  --exp-line: rgba(42, 39, 36, .16);
  --exp-line-soft: rgba(42, 39, 36, .09);
  --exp-ink-soft: rgba(42, 39, 36, .76);
  display: block;
}

/* ================= 首屏 ================= */
.page-products .exp-hero {
  position: relative;
  padding: clamp(28px, 6vw, 72px) 0 clamp(26px, 4.5vw, 52px);
  background:
    radial-gradient(130% 100% at 8% 0%, rgba(201, 160, 80, .16) 0%, transparent 58%),
    linear-gradient(175deg, var(--c-ink) 0%, var(--c-brick) 100%);
  border-bottom: 1px solid var(--c-line);
  overflow: hidden;
}

.page-products .exp-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: repeating-linear-gradient(90deg, var(--c-brass) 0 18px, transparent 18px 40px);
  opacity: .4;
}

.page-products .exp-hero__inner {
  display: grid;
  gap: 14px;
}

.page-products .exp-hero .breadcrumb {
  margin: 0 0 2px;
  color: var(--c-on-dark-dim);
}

.page-products .exp-hero .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
}

.page-products .exp-hero .breadcrumb li + li::before {
  content: "/";
  margin-right: 6px;
  opacity: .5;
}

.page-products .exp-hero .breadcrumb a {
  color: var(--c-on-dark-dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-products .exp-hero .breadcrumb a:hover {
  color: var(--c-brass-hi);
  border-bottom-color: currentColor;
}

.page-products .exp-hero h1 {
  margin: 0;
  max-width: 20em;
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(23px, 5.2vw, 42px);
  line-height: 1.36;
  letter-spacing: .015em;
  color: var(--c-paper);
}

.page-products .exp-hero__lead {
  margin: 0;
  max-width: 62ch;
  font-family: var(--font-sans);
  font-size: clamp(15px, 2.1vw, 17px);
  line-height: 1.95;
  color: var(--c-on-dark);
}

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

.page-products .exp-hero__facts li {
  padding: 6px 11px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .07em;
  color: var(--c-brass-hi);
  background: rgba(201, 160, 80, .07);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

/* ================= 纸面分段区 ================= */
.page-products .exp-room {
  padding: clamp(26px, 4.5vw, 54px) 0 clamp(34px, 6vw, 76px);
  color: var(--c-text);
  background-color: var(--c-paper);
  background-image: linear-gradient(rgba(42, 39, 36, .045) 1px, transparent 1px);
  background-size: 100% 48px;
  border-bottom: 1px solid var(--c-line);
}

.page-products .exp-switch {
  margin: 0;
}

.page-products .exp-switch__rail {
  display: flex;
  gap: 2px;
  margin: 0 0 clamp(20px, 3.5vw, 36px);
  padding: 0;
  overflow-x: auto;
  border-bottom: 1px solid var(--exp-line);
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.page-products .exp-switch__rail::-webkit-scrollbar {
  display: none;
}

.page-products .exp-tab {
  flex: 1 1 0;
  min-width: 96px;
  padding: 13px 10px 12px;
  scroll-snap-align: start;
  appearance: none;
  background: transparent;
  color: rgba(42, 39, 36, .6);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  white-space: nowrap;
  border: 1px solid transparent;
  border-bottom: 0;
  border-radius: var(--radius) var(--radius) 0 0;
  cursor: pointer;
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-products .exp-tab:hover {
  color: var(--c-wood);
  background: rgba(107, 74, 47, .07);
}

.page-products .exp-tab[aria-selected="true"] {
  color: var(--c-text);
  background: rgba(201, 160, 80, .18);
  border-color: var(--exp-line);
  box-shadow: inset 0 3px 0 0 var(--c-brass);
}

.page-products .exp-tab:focus-visible {
  outline: 2px solid var(--c-brass);
  outline-offset: -3px;
}

.page-products .exp-panel {
  padding: 0;
  animation: exp-slide .34s var(--ease) both;
}

.page-products .exp-panel[hidden] {
  display: none;
}

@keyframes exp-slide {
  from { opacity: 0; transform: translateX(16px); }
  to   { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .exp-panel { animation: none; }
}

.page-products .exp-panel > h2,
.page-products .exp-split__idx > h2,
.page-products .exp-gate__text > h2 {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(20px, 3.4vw, 27px);
  line-height: 1.45;
  letter-spacing: .015em;
  color: var(--c-text);
}

.page-products .exp-lead {
  margin: 0 0 20px;
  max-width: 60ch;
  font-size: clamp(14.5px, 2vw, 16.5px);
  line-height: 1.95;
  color: var(--exp-ink-soft);
}

.page-products .exp-fig {
  margin: 0 0 clamp(20px, 3.5vw, 34px);
  box-shadow: 7px 7px 0 rgba(107, 74, 47, .14);
}

.page-products .exp-mini-wrap {
  margin: 0 0 clamp(22px, 3.5vw, 34px);
  overflow-x: auto;
}

.page-products .exp-mini {
  display: block;
  width: 100%;
  max-width: 360px;
  height: auto;
  color: var(--c-wood);
}

.page-products .exp-mini__frame {
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  opacity: .38;
}

.page-products .exp-mini__on {
  fill: var(--c-brass);
}

.page-products .exp-mini__part {
  fill: var(--c-brass);
  opacity: .26;
}

.page-products .exp-mini__arrow {
  fill: none;
  stroke: var(--c-cinnabar);
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

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

.page-products .exp-note {
  position: relative;
  padding-left: 46px;
}

.page-products .exp-note__num {
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--c-brass);
}

.page-products .exp-note__num::after {
  content: "";
  position: absolute;
  left: 26px;
  top: 8px;
  width: 12px;
  height: 1px;
  background: var(--c-brass);
  opacity: .6;
}

.page-products .exp-note h3 {
  margin: 0 0 6px;
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 16px;
  letter-spacing: .02em;
  color: var(--c-text);
}

.page-products .exp-note p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--exp-ink-soft);
}

/* 版本档案 */
.page-products .exp-split {
  display: grid;
  gap: clamp(22px, 3.5vw, 40px);
}

.page-products .exp-index {
  display: grid;
  margin: 18px 0 0;
  padding: 0;
}

.page-products .exp-index__row {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: baseline;
  padding: 11px 0;
  border-bottom: 1px solid var(--exp-line-soft);
}

.page-products .exp-index__row:first-child {
  border-top: 1px solid var(--exp-line-soft);
}

.page-products .exp-index dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--c-wood);
}

.page-products .exp-index dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--c-text);
  text-align: right;
}

.page-products .exp-split__main .exp-fig {
  max-width: 460px;
}

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

.page-products .exp-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--exp-ink-soft);
}

.page-products .exp-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .7em;
  width: 6px;
  height: 6px;
  background: var(--c-brass);
  transform: rotate(45deg);
}

/* 下载入口 */
.page-products .exp-gate {
  display: grid;
  gap: clamp(22px, 3.5vw, 40px);
  align-items: center;
}

.page-products .exp-gate__fig {
  margin: 0;
  box-shadow: -7px 7px 0 rgba(201, 160, 80, .26);
}

/* ================= 设备适配 ================= */
.page-products .exp-devices {
  padding: clamp(38px, 6vw, 80px) 0;
  color: var(--c-on-dark);
  background: linear-gradient(180deg, var(--c-brick) 0%, var(--c-ink) 100%);
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
}

.page-products .exp-devices h2 {
  margin: 0 0 clamp(20px, 3vw, 34px);
  max-width: 24em;
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(20px, 3.4vw, 27px);
  line-height: 1.45;
  letter-spacing: .015em;
  color: var(--c-paper);
}

.page-products .exp-devices__grid {
  display: grid;
  gap: 1px;
  margin-bottom: clamp(22px, 3.5vw, 36px);
  background: var(--c-line);
  border: 1px solid var(--c-line);
}

.page-products .exp-device {
  padding: clamp(20px, 2.6vw, 30px);
  background: rgba(30, 30, 28, .74);
}

.page-products .exp-device__tag {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--c-brass);
}

.page-products .exp-device h3 {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 17px;
  line-height: 1.5;
  color: var(--c-paper);
}

.page-products .exp-device ul {
  display: grid;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .exp-device li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-on-dark);
}

.page-products .exp-device li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .74em;
  width: 7px;
  height: 1px;
  background: var(--c-cinnabar-lt);
}

.page-products .exp-devices__fig {
  margin: 0;
}

/* ================= 三步上手 ================= */
.page-products .exp-flow {
  padding-top: clamp(38px, 6vw, 80px);
  padding-bottom: clamp(38px, 6vw, 80px);
}

.page-products .exp-flow h2 {
  margin: 0 0 clamp(22px, 3vw, 34px);
  max-width: 24em;
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(20px, 3.4vw, 27px);
  line-height: 1.45;
  color: var(--c-text);
}

.page-products .exp-flow__list {
  display: grid;
  gap: clamp(18px, 2.6vw, 28px);
  margin: 0;
  padding: 0;
}

.page-products .exp-flow .rule-item {
  align-items: flex-start;
}

.page-products .exp-flow .rule-item h3 {
  margin: 0 0 6px;
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 16px;
  letter-spacing: .02em;
  color: var(--c-text);
}

.page-products .exp-flow .rule-item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--exp-ink-soft);
}

/* ================= 页尾 ================= */
.page-products .exp-coda {
  padding: clamp(40px, 7vw, 88px) 0;
  background: linear-gradient(180deg, var(--c-ink) 0%, var(--c-brick) 100%);
  border-top: 1px solid var(--c-line);
}

.page-products .exp-coda__inner {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
}

.page-products .exp-coda__fig {
  margin: 0;
}

.page-products .exp-coda__text h2 {
  margin: 0 0 14px;
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(20px, 3.2vw, 26px);
  line-height: 1.45;
  color: var(--c-paper);
}

.page-products .exp-coda__text p {
  margin: 0 0 22px;
  max-width: 50ch;
  font-size: 15px;
  line-height: 1.95;
  color: var(--c-on-dark);
}

.page-products .exp-links {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .exp-links a {
  display: block;
  padding: 11px 2px;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--c-on-dark);
  text-decoration: none;
  border-bottom: 1px dashed var(--c-line-soft);
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.page-products .exp-links a::after {
  content: "→";
  float: right;
  font-family: var(--font-mono);
  color: var(--c-brass);
  opacity: .75;
}

.page-products .exp-links a:hover {
  color: var(--c-brass-hi);
  padding-left: 8px;
}

/* ================= 响应式 ================= */
@media (min-width: 768px) {
  .page-products .exp-notes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px 32px;
  }

  .page-products .exp-devices__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-products .exp-coda__inner {
    grid-template-columns: minmax(220px, .72fr) 1.28fr;
  }

  .page-products .exp-gate {
    grid-template-columns: 1.2fr .8fr;
  }
}

@media (min-width: 900px) {
  .page-products .exp-split {
    grid-template-columns: minmax(240px, .82fr) 1.18fr;
    align-items: start;
  }

  .page-products .exp-flow__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1100px) {
  .page-products .exp-tab {
    font-size: 12.5px;
    padding: 15px 14px 13px;
  }
}
<<<END>>>