.page-products {
  --pd-gap: clamp(14px, 1.8vw, 22px);
  --pd-pad: clamp(18px, 2.2vw, 28px);
  --pd-panel: rgba(20, 26, 60, .55);
}

/* ---------- 页头 ---------- */
.page-products .page-head {
  padding-top: calc(var(--header-h, 100px) + clamp(26px, 5vw, 64px));
  padding-bottom: clamp(30px, 5vw, 58px);
}

.page-products .page-head .crumbs {
  margin-bottom: 26px;
  font-size: 13px;
  color: var(--ash);
}

.page-products .page-head .eyebrow {
  display: block;
  margin: 0 0 12px;
  color: var(--flag);
  letter-spacing: .12em;
}

.page-products .page-head h1 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(32px, 5.4vw, 62px);
  line-height: 1.08;
  letter-spacing: -.01em;
  color: var(--headline);
  max-width: 20ch;
}

.page-products .lede {
  max-width: 60ch;
  margin: 20px 0 0;
  font-size: clamp(15px, 1.25vw, 17px);
  line-height: 1.85;
  color: var(--ink);
}

.page-products .page-head .btn-row {
  margin-top: 28px;
}

/* ---------- 区块节奏 ---------- */
.page-products .section {
  padding: clamp(46px, 6.5vw, 88px) 0;
}

.page-products .section--tight {
  padding-top: clamp(30px, 4vw, 52px);
}

.page-products .section-head {
  max-width: 68ch;
  margin-bottom: clamp(22px, 3vw, 34px);
}

.page-products .section-head h2 {
  margin: 8px 0 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1.14;
  letter-spacing: -.01em;
  color: var(--headline);
}

.page-products .section-head__note {
  margin: 14px 0 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ash);
}

.page-products .prose h2 {
  margin: 8px 0 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1.14;
  letter-spacing: -.01em;
  color: var(--headline);
}

.page-products .prose p {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink);
}

.page-products .prose .eyebrow {
  display: block;
  margin: 0;
  color: var(--lake);
  letter-spacing: .12em;
}

.page-products .link-row {
  margin-top: 18px;
  font-size: 14px;
  color: var(--ash);
}

.page-products .link-row a,
.page-products .prose a,
.page-products .start-panel__body a {
  color: var(--lake);
  text-decoration: none;
  border-bottom: 1px solid var(--edge-soft);
}

.page-products .link-row a:hover,
.page-products .prose a:hover,
.page-products .start-panel__body a:hover {
  border-bottom-color: var(--lake);
}

/* ---------- 筛选条 ---------- */
.page-products .filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: clamp(18px, 2.4vw, 26px);
  padding-bottom: 16px;
  border-bottom: 1px solid var(--edge);
}

.page-products .filter-btn {
  padding: 7px 14px;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  color: var(--ash);
  background: transparent;
  border: 1px solid var(--edge);
  border-radius: 999px;
  cursor: pointer;
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-products .filter-btn:hover {
  color: var(--headline);
  border-color: var(--lake);
}

.page-products .filter-btn[aria-pressed="true"] {
  color: var(--night);
  background: var(--pulse);
  border-color: var(--pulse);
}

.page-products .filter-count {
  margin-left: auto;
  font-size: 12px;
  color: var(--ash);
  letter-spacing: .08em;
}

/* ---------- 仪表板 ---------- */
.page-products .dash {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pd-gap);
}

.page-products .panel {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: var(--pd-pad);
  background: var(--pd-panel);
  border: 1px solid var(--edge);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.page-products .panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  opacity: .9;
}

.page-products .panel--a::before { background: var(--pulse); }
.page-products .panel--b::before { background: var(--lake); }
.page-products .panel--c::before { background: var(--flag); }
.page-products .panel--d::before { background: var(--score); }

.page-products .panel__index {
  margin: 0;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--ash);
}

.page-products .panel__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 21px;
  line-height: 1.2;
  color: var(--headline);
}

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

.page-products .panel__state {
  margin: auto 0 0;
  align-self: flex-start;
}

/* ---------- 双栏 ---------- */
.page-products .split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 52px);
  align-items: start;
}

.page-products .bullet-list,
.page-products .feature-list {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--edge);
}

.page-products .bullet-list li,
.page-products .feature-list li {
  padding: 14px 0;
  border-bottom: 1px solid var(--edge);
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
}

.page-products .bullet-list strong,
.page-products .feature-list strong {
  color: var(--headline);
  font-weight: 700;
  margin-right: 6px;
}

.page-products .feature-list__no {
  display: inline-block;
  min-width: 26px;
  margin-right: 10px;
  font-size: 12px;
  color: var(--pulse);
  letter-spacing: .1em;
}

/* ---------- 媒体 ---------- */
.page-products .media {
  margin: 0;
  position: relative;
  border: 1px solid var(--edge);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(155deg, var(--stand), var(--night));
  box-shadow: var(--shadow-soft);
}

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

.page-products .media--portrait {
  max-width: 420px;
  width: 100%;
}

.page-products .media__label {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 6px 12px;
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--night);
  background: var(--flag);
  border-top-right-radius: var(--radius);
}

.page-products .ver-media img {
  max-height: 260px;
  object-fit: cover;
}

/* ---------- 信息条 ---------- */
.page-products .info-bar {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  margin-top: clamp(30px, 4vw, 48px);
  background: var(--edge);
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-products .info-bar__cell {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  background: var(--night);
}

.page-products .info-bar__key {
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--ash);
}

.page-products .info-bar__val {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 19px;
  color: var(--headline);
  letter-spacing: .01em;
}

/* ---------- 流程 ---------- */
.page-products .flow {
  counter-reset: flow;
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px 20px;
  margin-top: clamp(30px, 4vw, 46px);
}

.page-products .flow__step {
  position: relative;
  padding-top: 30px;
  border-top: 1px solid var(--edge);
}

.page-products .flow__step::before {
  counter-increment: flow;
  content: "0" counter(flow);
  position: absolute;
  top: -10px;
  left: 0;
  padding-right: 12px;
  background: var(--night);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--pulse);
}

.page-products .flow__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 18px;
  color: var(--headline);
}

.page-products .flow__text {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ash);
}

/* ---------- 版本条 ---------- */
.page-products .ver-list {
  display: grid;
  gap: 10px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-products .ver-bar {
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  background: var(--pd-panel);
  box-shadow: var(--shadow-soft);
}

.page-products .ver-bar summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-products .ver-bar summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--pulse);
}

.page-products .ver-bar[open] summary::after {
  content: "–";
}

.page-products .ver-bar__no {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--score);
}

.page-products .ver-bar__title {
  font-size: 15px;
  font-weight: 600;
  color: var(--headline);
}

.page-products .ver-bar__body {
  padding: 0 18px 18px;
  border-top: 1px solid var(--edge);
}

.page-products .ver-bar__body p {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink);
}

/* ---------- 自检步骤 ---------- */
.page-products .check-list {
  display: grid;
  gap: 10px;
}

.page-products .check {
  border: 1px solid var(--edge);
  border-left: 2px solid var(--lake);
  border-radius: var(--radius);
  background: var(--pd-panel);
}

.page-products .check[open] {
  border-left-color: var(--pulse);
}

.page-products .check summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-products .check__no {
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--ash);
}

.page-products .check__title {
  font-size: 16px;
  font-weight: 700;
  color: var(--headline);
}

.page-products .check__body {
  padding: 0 18px 18px 18px;
}

.page-products .check__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink);
}

.page-products .callout {
  margin-top: clamp(22px, 3vw, 32px);
}

.page-products .callout p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
}

/* ---------- 上手路径 ---------- */
.page-products .paths {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pd-gap);
}

.page-products .path {
  padding: var(--pd-pad);
  background: var(--pd-panel);
  border: 1px solid var(--edge);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}

.page-products .path__tag {
  display: inline-block;
  margin: 0 0 14px;
  padding: 4px 10px;
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--night);
  background: var(--flag);
  border-radius: 2px;
}

.page-products .path__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 20px;
  color: var(--headline);
}

.page-products .path__text {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink);
}

.page-products .start-panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 36px);
  align-items: center;
  margin-top: clamp(30px, 4vw, 48px);
  padding: var(--pd-pad);
  border: 1px solid var(--edge);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(43, 168, 196, .1), rgba(20, 26, 60, .6) 45%, rgba(10, 14, 42, .9));
}

.page-products .start-panel__media {
  max-width: 260px;
}

.page-products .start-panel__body h3 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(20px, 2.4vw, 28px);
  color: var(--headline);
}

.page-products .start-panel__body p {
  margin: 14px 0 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink);
}

.page-products .start-panel__body .btn-row {
  margin-top: 22px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-products .dash {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .panel--a {
    grid-column: span 2;
  }

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

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

  .page-products .paths > .path:last-child {
    grid-column: span 2;
  }
}

@media (min-width: 900px) {
  .page-products .split {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  }

  .page-products .split--rev {
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
  }

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

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

  .page-products .paths > .path:last-child {
    grid-column: auto;
  }

  .page-products .start-panel {
    grid-template-columns: 260px minmax(0, 1fr);
  }
}

@media (min-width: 1040px) {
  .page-products .dash {
    grid-template-columns: 1.2fr 1fr .85fr 1.05fr;
  }

  .page-products .panel--a,
  .page-products .panel--b,
  .page-products .panel--c,
  .page-products .panel--d {
    grid-column: auto;
  }
}

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