.page-products {
  --prod-gap: clamp(22px, 3.4vw, 48px);
  --prod-pad: clamp(36px, 5.2vw, 78px);
  background: var(--paper-000);
  color: var(--ink-700);
}

/* ---------- 首屏 ---------- */
.page-products .prod-hero {
  padding: clamp(24px, 4.2vw, 54px) 0 clamp(34px, 5.2vw, 74px);
}

.page-products .prod-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 54px);
  margin-top: clamp(20px, 3.2vw, 40px);
}

.page-products .prod-hero__lead { min-width: 0; }

.page-products .prod-hero__title {
  margin: 12px 0 0;
  font-size: clamp(31px, 6.2vw, 56px);
  line-height: 1.14;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--ink-900);
  max-width: 15em;
}

.page-products .prod-hero__intro {
  margin: 18px 0 0;
  max-width: 34em;
  font-size: clamp(14.5px, 1.55vw, 16px);
  line-height: 1.85;
  color: var(--ink-700);
}

.page-products .prod-hero__intro + .prod-hero__intro { margin-top: 12px; }

.page-products .prod-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 2.8vw, 30px);
}

.page-products .prod-brief {
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(20px, 2.6vw, 28px);
  box-shadow: var(--shadow-panel);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  min-width: 0;
}

.page-products .prod-brief__label {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--ink-500);
}

.page-products .prod-brief__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
}

.page-products .prod-brief__list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 13px 0;
  border-top: 1px solid var(--line);
}

.page-products .prod-brief__list li:first-child { border-top: 0; padding-top: 4px; }

.page-products .prod-brief__list strong {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(24px, 2.6vw, 30px);
  font-weight: 800;
  line-height: 1;
  color: var(--blue);
}

.page-products .prod-brief__list span {
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--ink-700);
}

.page-products .prod-brief__note {
  margin: 14px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--ink-500);
}

/* ---------- 设备对照带 ---------- */
.page-products .prod-devices {
  padding: var(--prod-pad) 0;
  background: var(--paper-100);
}

.page-products .prod-devices__grid { margin-top: clamp(22px, 3.2vw, 38px); }

.page-products .prod-device {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
  padding: clamp(20px, 2.4vw, 28px);
  background: var(--paper-000);
  border-radius: var(--radius);
  border-top: 3px solid var(--line-strong);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-products .prod-device:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-panel);
}

.page-products .prod-device--blue { border-top-color: var(--blue); }
.page-products .prod-device--teal { border-top-color: var(--teal); }
.page-products .prod-device--ink { border-top-color: var(--ink-500); }

.page-products .prod-device__icon {
  display: block;
  width: 42px;
  height: 42px;
  color: var(--blue);
}

.page-products .prod-device--teal .prod-device__icon { color: var(--teal); }
.page-products .prod-device--ink .prod-device__icon { color: var(--ink-500); }

.page-products .prod-device__icon svg {
  width: 100%;
  height: 100%;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.page-products .prod-device h3 {
  margin: 0;
  font-size: clamp(17px, 1.9vw, 19px);
  font-weight: 800;
  line-height: 1.4;
  color: var(--ink-900);
}

.page-products .prod-device p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--ink-500);
}

.page-products .prod-device__pick {
  margin-top: auto;
  align-self: flex-start;
  padding: 7px 14px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--ink-700);
  background: var(--blue-soft);
  border-radius: 999px;
}

.page-products .prod-device--teal .prod-device__pick { background: var(--teal-soft); }
.page-products .prod-device--ink .prod-device__pick { background: var(--paper-200); }

/* ---------- 入口详情块 ---------- */
.page-products .prod-block { padding: var(--prod-pad) 0; }
.page-products .prod-block--panel,
.page-products .prod-block--new { background: var(--paper-000); }
.page-products .prod-block--mobile { background: var(--paper-100); }

.page-products .prod-block__grid {
  display: grid;
  gap: clamp(24px, 3.6vw, 52px);
  align-items: start;
}

.page-products .prod-block__media { min-width: 0; }

.page-products .prod-block__body { min-width: 0; max-width: 40em; }

.page-products .prod-block__body h2 {
  margin: 10px 0 0;
  font-size: clamp(25px, 3.8vw, 40px);
  line-height: 1.2;
  font-weight: 900;
  color: var(--ink-900);
}

.page-products .prod-shot {
  position: relative;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--paper-100);
  box-shadow: var(--shadow-panel);
}

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

.page-products .prod-shot--phone { max-width: 420px; }

.page-products .prod-shot__tag {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 2;
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: #fff;
  background: var(--blue);
}

.page-products .prod-shot__tag--teal { background: var(--teal-deep); }

/* ---------- 步骤清单 ---------- */
.page-products .prod-steps {
  list-style: none;
  margin: clamp(20px, 2.6vw, 32px) 0 0;
  padding: 0;
}

.page-products .prod-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(14px, 1.8vw, 22px);
  padding: clamp(16px, 2vw, 22px) 0;
  border-top: 1px solid var(--line);
}

.page-products .prod-step:first-child { border-top: 0; padding-top: 4px; }

.page-products .prod-step__body h3 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 800;
  line-height: 1.5;
  color: var(--ink-900);
}

.page-products .prod-step__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-500);
}

.page-products .prod-note {
  margin-top: clamp(18px, 2.4vw, 28px);
  padding: 16px 18px;
  background: var(--teal-soft);
  border-left: 3px solid var(--teal);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.page-products .prod-note h3 {
  margin: 0 0 6px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--teal-deep);
}

.page-products .prod-note p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--ink-700);
}

/* ---------- 配套工具 ---------- */
.page-products .prod-tools {
  padding: var(--prod-pad) 0;
  background: var(--paper-100);
}

.page-products .prod-tools__grid {
  display: grid;
  gap: var(--prod-gap);
  margin-top: clamp(22px, 3.2vw, 38px);
  align-items: start;
}

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

.page-products .prod-tool-list li {
  padding: clamp(15px, 1.9vw, 20px) 0;
  border-top: 1px solid var(--line);
}

.page-products .prod-tool-list li:first-child { border-top: 0; padding-top: 0; }

.page-products .prod-tool-list__key {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--blue);
}

.page-products .prod-tool-list h3 {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 800;
  color: var(--ink-900);
}

.page-products .prod-tool-list p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-500);
}

/* ---------- 版本演进 ---------- */
.page-products .prod-versions {
  padding: var(--prod-pad) 0;
  background: var(--paper-000);
}

.page-products .prod-track {
  list-style: none;
  position: relative;
  margin: clamp(24px, 3.2vw, 42px) 0 0;
  padding: 0;
}

.page-products .prod-track::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--blue), var(--teal));
}

.page-products .prod-track__node {
  position: relative;
  padding: 0 0 clamp(22px, 2.8vw, 34px) 38px;
}

.page-products .prod-track__node:last-child { padding-bottom: 0; }

.page-products .prod-track__dot {
  position: absolute;
  left: 0;
  top: 4px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--paper-000);
  border: 3px solid var(--blue);
  box-sizing: border-box;
}

.page-products .prod-track__node:nth-child(2) .prod-track__dot { border-color: var(--teal); }
.page-products .prod-track__node:nth-child(3) .prod-track__dot { border-color: var(--blue-deep); }
.page-products .prod-track__node:nth-child(4) .prod-track__dot { border-color: var(--ink-500); }

.page-products .prod-track__tag {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ink-500);
}

.page-products .prod-track__node h3 {
  margin: 0 0 6px;
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 800;
  line-height: 1.45;
  color: var(--ink-900);
}

.page-products .prod-track__node p {
  margin: 0;
  font-size: 14px;
  line-height: 1.82;
  color: var(--ink-500);
  max-width: 40em;
}

/* ---------- 何时先读说明 ---------- */
.page-products .prod-when {
  padding: var(--prod-pad) 0;
  background: var(--paper-100);
}

.page-products .prod-when__grid {
  display: grid;
  gap: 0;
  margin-top: clamp(22px, 3.2vw, 38px);
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-products .prod-q { border-top: 1px solid var(--line); }

.page-products .prod-q:first-child { border-top: 0; }

.page-products .prod-q summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: clamp(15px, 1.9vw, 20px) clamp(16px, 2.2vw, 26px);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--ink-900);
  cursor: pointer;
  list-style: none;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

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

.page-products .prod-q summary::before {
  content: "+";
  flex: 0 0 auto;
  width: 22px;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--blue);
  text-align: center;
}

.page-products .prod-q[open] summary::before { content: "–"; color: var(--teal-deep); }
.page-products .prod-q summary:hover { background: var(--blue-soft); }
.page-products .prod-q summary:focus-visible { outline: 2px solid var(--blue); outline-offset: -2px; }

.page-products .prod-q p {
  margin: 0;
  padding: 0 clamp(16px, 2.2vw, 26px) clamp(16px, 2vw, 22px) calc(clamp(16px, 2.2vw, 26px) + 34px);
  font-size: 14px;
  line-height: 1.82;
  color: var(--ink-500);
}

.page-products .prod-when__foot {
  margin: clamp(22px, 2.8vw, 32px) 0 0;
  padding-top: clamp(18px, 2.2vw, 24px);
  border-top: 1px solid var(--line-strong);
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-500);
  max-width: 44em;
}

.page-products .prod-when__foot a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid var(--blue-soft);
}

.page-products .prod-when__foot a:hover { border-bottom-color: var(--blue); }

/* ---------- 收束 ---------- */
.page-products .prod-cta { padding: clamp(42px, 5.4vw, 84px) 0; }
.page-products .prod-cta__inner { max-width: 40em; }

.page-products .prod-cta h2 {
  margin: 0;
  font-size: clamp(24px, 3.6vw, 36px);
  line-height: 1.25;
  font-weight: 900;
  color: #fff;
}

.page-products .prod-cta p {
  margin: 14px 0 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.74);
}

.page-products .prod-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 2.8vw, 30px);
}

.page-products .prod-cta .btn--ghost {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.38);
  background: transparent;
}

.page-products .prod-cta .btn--ghost:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-products .prod-when__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-products .prod-q:nth-child(2) { border-top: 0; }
  .page-products .prod-q:nth-child(odd) { border-right: 1px solid var(--line); }
}

@media (min-width: 940px) {
  .page-products .prod-hero__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(290px, 0.86fr);
    align-items: start;
  }

  .page-products .prod-block__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  }

  .page-products .prod-block--flip .prod-block__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  }

  .page-products .prod-block--flip .prod-block__media { order: 2; }

  .page-products .prod-tools__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  }

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

  .page-products .prod-track::before {
    left: 0;
    right: 0;
    top: 9px;
    bottom: auto;
    width: auto;
    height: 2px;
    background: linear-gradient(90deg, var(--blue), var(--teal));
  }

  .page-products .prod-track__node {
    padding: 40px 22px 0 0;
  }

  .page-products .prod-track__node:last-child { padding-bottom: 0; }

  .page-products .prod-track__dot {
    top: 0;
    left: 0;
    background: var(--paper-000);
  }
}

@media (max-width: 719px) {
  .page-products .prod-shot--phone { max-width: 100%; }
  .page-products .prod-step { gap: 14px; }
  .page-products .prod-cta__actions .btn { flex: 1 1 auto; justify-content: center; }
}
<<<END>>>