.page-products {
  --prod-rule: 1px solid var(--line);
  --prod-pad-y: 44px;
  --tier-1: #F2E3C6;
  --tier-2: #F7DFA9;
  --tier-3: #FBD28B;
  --tier-4: #FEBE6E;
  --tier-5: #FF9950;
  --tier-6: #FF6B35;
  background: var(--paper);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-products .prod-hero {
  padding: 26px 0 40px;
  border-bottom: var(--prod-rule);
  background: linear-gradient(180deg, var(--white) 0%, var(--paper) 100%);
}

.page-products .crumbs {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--slate);
}

.page-products .crumbs a {
  color: var(--navy-600);
  text-decoration: none;
}

.page-products .crumbs a:hover {
  border-bottom: 1px solid currentColor;
}

.page-products .prod-hero__grid {
  display: grid;
  gap: 28px;
  margin-top: 22px;
}

.page-products .prod-kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--navy-600);
}

.page-products .prod-kicker::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--signal);
  flex: none;
}

.page-products h1 {
  margin: 16px 0 18px;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(28px, 7vw, 52px);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--navy-900);
  max-width: 20ch;
}

.page-products .prod-hero__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mute);
  max-width: 62ch;
}

.page-products .prod-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-products .prod-stats {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  background: var(--line);
  border: var(--prod-rule);
}

.page-products .prod-stats__cell {
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding: 16px 14px 14px;
  background: var(--white);
}

.page-products .prod-stats__num {
  font-family: var(--font-mono);
  font-size: 32px;
  font-weight: 700;
  line-height: 1;
  color: var(--navy-800);
}

.page-products .prod-stats__label {
  font-size: 12px;
  line-height: 1.5;
  color: var(--slate);
}

/* ---------- 章节通用 ---------- */
.page-products .prod-section {
  padding: var(--prod-pad-y) 0;
  border-bottom: var(--prod-rule);
}

.page-products .section-head {
  margin-bottom: 18px;
}

.page-products .prod-lead {
  margin: 0 0 22px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mute);
  max-width: 70ch;
}

.page-products .prod-note {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate);
}

.page-products .prod-note a {
  color: var(--navy-600);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.page-products .prod-note a:hover {
  color: var(--signal);
}

/* ---------- 图片框 ---------- */
.page-products .prod-figure {
  position: relative;
  margin: 0;
  background: var(--sand);
  border: var(--prod-rule);
  overflow: hidden;
}

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

.page-products .prod-figure::after {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px solid rgba(255, 255, 255, .42);
  pointer-events: none;
}

.page-products .prod-figure--flat {
  margin-top: 28px;
}

/* ---------- 版本与运行环境 ---------- */
.page-products .prod-vers__grid {
  display: grid;
  gap: 26px;
}

.page-products .prod-envs {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--prod-rule);
}

.page-products .prod-envs li {
  padding: 14px 0;
  border-bottom: var(--prod-rule);
}

.page-products .prod-envs__os {
  display: block;
  margin-bottom: 5px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--navy-800);
}

.page-products .prod-envs__desc {
  display: block;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mute);
}

/* ---------- 工艺节点 ---------- */
.page-products .prod-nodes__grid {
  display: grid;
  gap: 24px;
  margin-bottom: 8px;
}

.page-products .prod-nodes {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  border-top: var(--prod-rule);
  border-left: var(--prod-rule);
}

.page-products .prod-nodes li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 13px 12px;
  background: var(--white);
  border-right: var(--prod-rule);
  border-bottom: var(--prod-rule);
}

.page-products .prod-nodes__idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--cyan-dark);
  flex: none;
}

.page-products .prod-nodes__name {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
}

/* ---------- 筛选 ---------- */
.page-products .prod-filters {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 26px 0 0;
  padding-top: 22px;
  border-top: var(--prod-rule);
}

.page-products .filter-btn {
  appearance: none;
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1;
  letter-spacing: .04em;
  color: var(--mute);
  background: var(--white);
  border: var(--prod-rule);
  border-radius: 0;
  cursor: pointer;
  transition: background .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}

.page-products .filter-btn:hover {
  color: var(--navy-800);
  border-color: var(--navy-600);
}

.page-products .filter-btn[aria-pressed="true"] {
  color: var(--white);
  background: var(--navy-800);
  border-color: var(--navy-800);
}

.page-products .filter-btn:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

.page-products .prod-filters__status {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--slate);
}

/* ---------- 版本清单 ---------- */
.page-products .prod-ver-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  border-top: var(--prod-rule);
}

.page-products .prod-ver {
  display: grid;
  gap: 8px;
  padding: 16px 6px;
  border-bottom: var(--prod-rule);
  transition: background .18s var(--ease);
}

.page-products .prod-ver:hover {
  background: rgba(46, 196, 182, .07);
}

.page-products .prod-ver__code {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--navy-900);
}

.page-products .prod-ver__env {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--slate);
}

.page-products .prod-ver__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.page-products .prod-ver__link {
  justify-self: start;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--signal);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 1px;
}

.page-products .prod-ver__link:hover {
  color: var(--navy-800);
}

/* ---------- 价格档位 ---------- */
.page-products .prod-tiers__grid {
  display: grid;
  gap: 26px;
}

.page-products .prod-scale {
  list-style: none;
  margin: 0;
  padding: 0;
  border: var(--prod-rule);
  border-bottom: 0;
}

.page-products .prod-scale::after {
  content: "";
  display: block;
  height: 8px;
  background: linear-gradient(90deg,
    var(--tier-1) 0%, var(--tier-2) 20%,
    var(--tier-3) 40%, var(--tier-4) 60%,
    var(--tier-5) 80%, var(--tier-6) 100%);
}

.page-products .prod-tier {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 4px 12px;
  padding: 16px 16px 16px 16px;
  border-bottom: var(--prod-rule);
  border-left: 6px solid var(--tier-1);
  background: rgba(242, 227, 198, .2);
}

.page-products .prod-tier--1 { border-left-color: var(--tier-1); }
.page-products .prod-tier--2 { border-left-color: var(--tier-2); }
.page-products .prod-tier--3 { border-left-color: var(--tier-3); }
.page-products .prod-tier--4 { border-left-color: var(--tier-4); }
.page-products .prod-tier--5 { border-left-color: var(--tier-5); }
.page-products .prod-tier--6 { border-left-color: var(--tier-6); }

.page-products .prod-tier__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--slate);
  padding-top: 4px;
}

.page-products .prod-tier__name {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--navy-900);
}

.page-products .prod-tier__fit {
  grid-column: 2;
  margin: 2px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mute);
}

/* ---------- 交付物 ---------- */
.page-products .prod-deliv__grid {
  display: grid;
  gap: 26px;
}

.page-products .prod-deliv {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--prod-rule);
}

.page-products .prod-deliv__item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-bottom: var(--prod-rule);
}

.page-products .prod-deliv__idx {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cyan-dark);
  padding-top: 4px;
}

.page-products .prod-deliv__name {
  margin: 0 0 6px;
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--navy-900);
}

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

/* ---------- 取包与校验 ---------- */
.page-products .prod-verify__grid {
  display: grid;
  gap: 26px;
}

.page-products .prod-acc {
  border-top: var(--prod-rule);
}

.page-products .prod-acc:last-of-type {
  border-bottom: var(--prod-rule);
}

.page-products .prod-acc > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 15px 0;
  list-style: none;
  cursor: pointer;
  font-size: 15px;
  font-weight: 500;
  color: var(--navy-900);
}

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

.page-products .prod-acc > summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan-dark);
}

.page-products .prod-acc[open] > summary::after {
  content: "–";
}

.page-products .prod-acc__body {
  padding: 0 0 16px;
}

.page-products .prod-acc__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mute);
}

.page-products .prod-aside {
  padding: 22px 20px 24px;
  background: var(--navy-900);
  border-top: 3px solid var(--cyan);
}

.page-products .prod-aside__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-products .prod-aside ol {
  margin: 0;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(251, 247, 239, .88);
}

.page-products .prod-aside li + li {
  margin-top: 8px;
}

/* ---------- 结尾 ---------- */
.page-products .prod-cta {
  border-bottom: 0;
}

.page-products .prod-cta__box {
  display: grid;
  gap: 18px;
  padding: 30px 20px 32px;
  background: var(--navy-900);
  border-top: 4px solid var(--signal);
}

.page-products .prod-cta__box h2 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(22px, 5vw, 34px);
  font-weight: 600;
  line-height: 1.26;
  color: var(--paper);
  max-width: 22ch;
}

.page-products .prod-cta__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(251, 247, 239, .82);
  max-width: 62ch;
}

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

.page-products .prod-cta__list li {
  padding: 6px 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--cyan);
  border: 1px solid rgba(46, 196, 182, .5);
}

.page-products .prod-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 平板 ---------- */
@media (min-width: 640px) {
  .page-products .prod-envs li {
    display: grid;
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 16px;
    align-items: baseline;
  }

  .page-products .prod-envs__os {
    margin-bottom: 0;
  }

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

@media (min-width: 720px) {
  .page-products .prod-cta__box {
    padding: 40px 32px 44px;
  }

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

  .page-products .prod-scale::after {
    grid-column: 1 / -1;
  }

  .page-products .prod-tier:nth-child(odd) {
    border-right: var(--prod-rule);
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1000px) {
  .page-products {
    --prod-pad-y: 72px;
  }

  .page-products .prod-hero {
    padding: 34px 0 60px;
  }

  .page-products .prod-hero__grid {
    grid-template-columns: minmax(0, 1.32fr) minmax(0, 1fr);
    gap: 56px;
    align-items: end;
  }

  .page-products .prod-stats__num {
    font-size: 40px;
  }

  .page-products .section-head {
    margin-bottom: 24px;
  }

  .page-products .prod-vers__grid {
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 56px;
    align-items: start;
  }

  .page-products .prod-nodes__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }

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

  .page-products .prod-ver {
    grid-template-columns: 168px 200px minmax(0, 1fr) auto;
    align-items: center;
    gap: 20px;
    padding: 15px 8px;
  }

  .page-products .prod-ver__link {
    justify-self: end;
  }

  .page-products .prod-tiers__grid {
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 48px;
    align-items: start;
  }

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

  .page-products .prod-tier:nth-child(odd) {
    border-right: 0;
  }

  .page-products .prod-deliv__grid {
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 48px;
    align-items: start;
  }

  .page-products .prod-figure--flat {
    max-width: 760px;
  }

  .page-products .prod-verify__grid {
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 56px;
    align-items: start;
  }

  .page-products .prod-cta__box {
    padding: 52px 48px 56px;
  }
}

@media (min-width: 1180px) {
  .page-products .prod-nodes {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}