.page-products {
  --ps-gutter: clamp(16px, 4vw, 48px);
  --ps-gap: clamp(18px, 2.4vw, 32px);
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-products .section {
  padding-block: clamp(40px, 6vw, 76px);
}

/* ---------- breadcrumbs spacing ---------- */
.page-products .breadcrumbs {
  padding-top: clamp(20px, 3vw, 34px);
  flex-wrap: wrap;
}

/* ---------- hero ---------- */
.page-products .dl-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--ps-gap);
  padding-block: clamp(28px, 5vw, 56px) clamp(36px, 6vw, 72px);
  border-bottom: 1px solid var(--line);
}

.page-products .dl-hero__text { max-width: 40em; }

.page-products .dl-hero__title {
  font-family: var(--font-display);
  font-size: var(--fs-3xl);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 12px 0 0;
  color: var(--ink);
  font-weight: 800;
}

.page-products .dl-hero__lead {
  margin: 20px 0 0;
  font-size: var(--fs-lg);
  line-height: 1.75;
  color: var(--slate);
  max-width: 34em;
}

.page-products .dl-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-products .dl-hero__panel {
  background: var(--slate);
  color: var(--paper);
  padding: clamp(20px, 3vw, 30px);
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
}

.page-products .dl-hero__panel::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: linear-gradient(180deg, var(--orange), var(--green));
}

.page-products .dl-hero__panel-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 0 9px 10px;
  border-bottom: 1px dashed rgba(244, 239, 229, 0.22);
}

.page-products .dl-hero__panel-k {
  font-size: var(--fs-sm);
  color: rgba(244, 239, 229, 0.72);
  letter-spacing: 0.04em;
}

.page-products .dl-hero__panel-v {
  font-size: var(--fs-xl);
  color: var(--paper);
  font-weight: 600;
}

.page-products .dl-hero__panel-row:nth-child(2) .dl-hero__panel-v { color: var(--green); }
.page-products .dl-hero__panel-row:nth-child(4) .dl-hero__panel-v { color: var(--orange); }

.page-products .dl-hero__panel-note {
  margin: 16px 0 0 10px;
  font-size: var(--fs-sm);
  line-height: 1.7;
  color: rgba(244, 239, 229, 0.62);
}

/* ---------- shared section head ---------- */
.page-products .section-head {
  max-width: 44em;
  margin-bottom: clamp(22px, 3vw, 36px);
}

.page-products .section-head__title {
  font-family: var(--font-display);
  font-size: var(--fs-2xl);
  line-height: 1.18;
  letter-spacing: -0.015em;
  margin: 10px 0 0;
  color: var(--ink);
  font-weight: 800;
}

.page-products .section-head__note {
  margin: 14px 0 0;
  font-size: var(--fs-base);
  line-height: 1.75;
  color: var(--mute);
  max-width: 38em;
}

/* ---------- download desk ---------- */
.page-products .desk-feature {
  background: var(--card);
  border: 1px solid var(--line);
  border-top: 3px solid var(--orange);
  padding: clamp(20px, 3vw, 32px);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
}

.page-products .desk-feature__bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.page-products .desk-feature__ver {
  font-size: var(--fs-xl);
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.02em;
}

.page-products .desk-feature__title {
  font-family: var(--font-display);
  font-size: var(--fs-xl);
  margin: 14px 0 0;
  color: var(--ink);
  font-weight: 700;
}

.page-products .desk-feature__desc {
  margin: 10px 0 0;
  font-size: var(--fs-base);
  line-height: 1.75;
  color: var(--slate);
  max-width: 46em;
}

.page-products .desk-feature__meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 20px;
  margin: 22px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--line);
}

.page-products .desk-feature__meta-item dt {
  font-size: var(--fs-xs);
  letter-spacing: 0.06em;
  color: var(--mute);
  text-transform: uppercase;
}

.page-products .desk-feature__meta-item dd {
  margin: 5px 0 0;
  font-size: var(--fs-lg);
  font-weight: 600;
  color: var(--ink);
}

.page-products .desk-feature__foot {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.page-products .checksum {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
  flex: 1 1 240px;
}

.page-products .checksum__label {
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-products .checksum__value {
  font-size: 12px;
  color: var(--slate);
  word-break: break-all;
  line-height: 1.5;
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 7px 9px;
  border-radius: var(--radius);
}

.page-products .desk-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--ps-gap);
  margin-top: var(--ps-gap);
}

.page-products .desk-item {
  background: var(--paper);
  border: 1px solid var(--line);
  border-left: 2px solid var(--amber);
  padding: 18px 20px;
  border-radius: var(--radius);
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.page-products .desk-item:hover {
  border-left-color: var(--orange);
  transform: translateY(-2px);
}

.page-products .desk-item__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

.page-products .desk-item__ver {
  font-size: var(--fs-base);
  font-weight: 600;
  color: var(--ink);
}

.page-products .desk-item__title {
  font-size: var(--fs-lg);
  margin: 10px 0 0;
  color: var(--ink);
  font-weight: 700;
}

.page-products .desk-item__meta {
  margin: 8px 0 0;
  font-size: var(--fs-xs);
  color: var(--mute);
  letter-spacing: 0.03em;
}

.page-products .desk-item__text {
  margin: 8px 0 0;
  font-size: var(--fs-sm);
  line-height: 1.7;
  color: var(--slate);
}

/* ---------- version diff ---------- */
.page-products .diff {
  background: var(--paper);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-products .diff-shell {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(18px, 2.6vw, 28px);
  box-shadow: var(--shadow-soft);
}

.page-products .diff-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 12px;
  padding-bottom: 18px;
  border-bottom: 1px dashed var(--line);
}

.page-products .diff-controls__group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1 1 140px;
  min-width: 0;
}

.page-products .diff-controls__group--range { flex: 1 1 180px; }

.page-products .diff-controls__label {
  font-size: var(--fs-xs);
  letter-spacing: 0.06em;
  color: var(--mute);
  text-transform: uppercase;
}

.page-products .diff-controls__field {
  font-size: var(--fs-base);
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 9px 11px;
  border-radius: var(--radius);
  font-weight: 600;
}

.page-products .diff-controls__field--alt {
  border-color: var(--amber);
  color: var(--rust);
}

.page-products .diff-controls__field--range {
  border-style: dashed;
  color: var(--slate);
  font-weight: 500;
}

.page-products .diff-controls__arrow {
  font-size: var(--fs-xl);
  color: var(--orange);
  padding-bottom: 4px;
}

.page-products .diff-figure {
  margin: 22px 0 0;
}

.page-products .diff-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-products .diff-table {
  margin-top: 22px;
  border-top: 1px solid var(--line);
}

.page-products .diff-table__head,
.page-products .diff-table__row {
  display: grid;
  grid-template-columns: 1.2fr 0.9fr 0.9fr 1fr;
  gap: 10px;
  align-items: center;
  padding: 12px 4px;
  border-bottom: 1px solid var(--line);
  font-size: var(--fs-sm);
}

.page-products .diff-table__head {
  font-size: var(--fs-xs);
  letter-spacing: 0.06em;
  color: var(--mute);
  text-transform: uppercase;
}

.page-products .diff-table__row > span:first-child {
  color: var(--ink);
  font-weight: 600;
}

.page-products .diff-table__row > span:nth-child(2),
.page-products .diff-table__row > span:nth-child(3) {
  color: var(--slate);
}

.page-products .diff-table__row:nth-child(odd) { background: rgba(216, 208, 194, 0.16); }

.page-products .diff-foot {
  margin: 18px 0 0;
  font-size: var(--fs-sm);
  line-height: 1.75;
  color: var(--mute);
}

.page-products .diff-foot a {
  color: var(--rust);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- archive ---------- */
.page-products .archive-figure {
  margin: 0 0 var(--ps-gap);
}

.page-products .archive-figure .media-frame__cap {
  margin-top: 10px;
  font-size: var(--fs-xs);
  color: var(--mute);
}

.page-products .archive-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-products .arch {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 16px 18px;
  border-radius: var(--radius);
  position: relative;
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.page-products .arch:hover {
  border-color: var(--slate);
  box-shadow: var(--shadow-soft);
}

.page-products .arch__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

.page-products .arch__ver {
  font-size: var(--fs-base);
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.03em;
}

.page-products .arch__title {
  font-size: var(--fs-base);
  margin: 10px 0 0;
  color: var(--slate);
  font-weight: 600;
}

.page-products .arch__text {
  margin: 8px 0 0;
  font-size: var(--fs-sm);
  line-height: 1.7;
  color: var(--mute);
}

.page-products .arch__meta {
  margin: 10px 0 0;
  font-size: var(--fs-xs);
  letter-spacing: 0.03em;
  color: var(--amber);
}

.page-products .arch--wide {
  background: var(--slate);
  border-color: var(--slate);
  color: var(--paper);
}

.page-products .arch--wide .arch__ver { color: var(--paper); }
.page-products .arch--wide .arch__title { color: var(--paper); }
.page-products .arch--wide .arch__text { color: rgba(244, 239, 229, 0.74); }
.page-products .arch--wide .arch__meta { color: var(--green); }

.page-products .arch--tail {
  border-style: dashed;
  background: transparent;
}

.page-products .arch__link {
  display: inline-block;
  margin-top: 10px;
  font-size: var(--fs-sm);
  color: var(--rust);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- topics ---------- */
.page-products .topics {
  background: var(--paper);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-products .topics-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--ps-gap);
}

.page-products .topics-visual img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
}

.page-products .topics-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.page-products .topics-tab {
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  color: var(--slate);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 7px 13px;
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-products .topics-tab:hover {
  border-color: var(--slate);
  color: var(--ink);
}

.page-products .topics-tab.is-active {
  background: var(--slate);
  border-color: var(--slate);
  color: var(--paper);
}

.page-products .topics-tab:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

.page-products .topics-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 18px;
}

.page-products .topic-item {
  background: var(--card);
  border-left: 2px solid var(--orange);
  padding: 14px 16px;
  border-radius: var(--radius);
}

.page-products .topic-item__title {
  font-size: var(--fs-base);
  margin: 0;
  color: var(--ink);
  font-weight: 700;
}

.page-products .topic-item__text {
  margin: 7px 0 0;
  font-size: var(--fs-sm);
  line-height: 1.7;
  color: var(--slate);
}

.page-products .topic-item__meta {
  margin: 9px 0 0;
  font-size: var(--fs-xs);
  color: var(--amber);
  letter-spacing: 0.03em;
}

.page-products .topics-note {
  margin: 16px 0 0;
  font-size: var(--fs-xs);
  line-height: 1.7;
  color: var(--mute);
  padding-top: 12px;
  border-top: 1px dashed var(--line);
}

/* ---------- verify ---------- */
.page-products .verify-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--ps-gap);
  align-items: start;
}

.page-products .verify-visual img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-products .verify-checksum {
  background: var(--slate);
  color: var(--paper);
  padding: clamp(18px, 2.4vw, 26px);
  border-radius: var(--radius);
}

.page-products .verify-checksum__label {
  margin: 0;
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  color: var(--green);
  text-transform: uppercase;
}

.page-products .verify-checksum__value {
  display: block;
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.6;
  word-break: break-all;
  color: var(--paper);
  background: rgba(22, 35, 33, 0.55);
  border: 1px solid rgba(244, 239, 229, 0.2);
  padding: 10px 12px;
  border-radius: var(--radius);
}

.page-products .verify-checksum__hint {
  margin: 12px 0 0;
  font-size: var(--fs-xs);
  line-height: 1.7;
  color: rgba(244, 239, 229, 0.7);
}

.page-products .verify-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-products .verify-list__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 12px 0 0;
  border-top: 1px solid var(--line);
}

.page-products .verify-list__k {
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.02em;
}

.page-products .verify-list__v {
  font-size: var(--fs-sm);
  line-height: 1.7;
  color: var(--mute);
}

/* ---------- batch ---------- */
.page-products .batch {
  background: var(--paper);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-products .batch-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--ps-gap);
}

.page-products .batch-form {
  background: var(--card);
  border: 1px solid var(--line);
  padding: clamp(18px, 2.4vw, 26px);
  border-radius: var(--radius);
}

.page-products .batch-group {
  border: 0;
  padding: 0;
  margin: 0 0 18px;
}

.page-products .batch-group:last-of-type { margin-bottom: 0; }

.page-products .batch-group__title {
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mute);
  padding: 0;
  margin-bottom: 10px;
}

.page-products .batch-check {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: var(--fs-sm);
  color: var(--slate);
  padding: 7px 0;
  border-bottom: 1px dashed var(--line);
}

.page-products .batch-check input {
  accent-color: var(--orange);
  width: 15px;
  height: 15px;
}

.page-products .batch-form__note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: var(--fs-xs);
  line-height: 1.7;
  color: var(--amber);
}

.page-products .batch-preview {
  background: var(--slate);
  color: var(--paper);
  padding: clamp(18px, 2.4vw, 26px);
  border-radius: var(--radius);
}

.page-products .batch-preview__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(244, 239, 229, 0.2);
  font-size: var(--fs-sm);
  letter-spacing: 0.06em;
}

.page-products .batch-preview__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  counter-reset: batchitem;
}

.page-products .batch-preview__item {
  counter-increment: batchitem;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 14px;
  padding: 11px 0 11px 26px;
  position: relative;
  border-bottom: 1px solid rgba(244, 239, 229, 0.14);
}

.page-products .batch-preview__item::before {
  content: counter(batchitem, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 11px;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--orange);
}

.page-products .batch-preview__name {
  font-size: var(--fs-sm);
  color: var(--paper);
}

.page-products .batch-preview__meta {
  font-size: var(--fs-xs);
  color: rgba(244, 239, 229, 0.62);
}

.page-products .batch-preview__foot {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.page-products .batch-preview__hint {
  font-size: var(--fs-xs);
  color: rgba(244, 239, 229, 0.62);
  flex: 1 1 160px;
}

.page-products .batch-visual img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
}

/* ---------- faq ---------- */
.page-products .faq-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-products .faq-item {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 18px;
  transition: border-color 0.2s var(--ease);
}

.page-products .faq-item[open] {
  border-left: 3px solid var(--orange);
}

.page-products .faq-item__q {
  cursor: pointer;
  font-size: var(--fs-base);
  font-weight: 700;
  color: var(--ink);
  list-style: none;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  line-height: 1.6;
}

.page-products .faq-item__q::-webkit-details-marker { display: none; }

.page-products .faq-item__q::before {
  content: "+";
  font-family: var(--font-mono);
  color: var(--orange);
  font-weight: 600;
  flex: none;
}

.page-products .faq-item[open] .faq-item__q::before { content: "−"; }

.page-products .faq-item__q:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
}

.page-products .faq-item__a {
  margin: 10px 0 0 22px;
  font-size: var(--fs-sm);
  line-height: 1.8;
  color: var(--slate);
}

.page-products .faq-item__a a {
  color: var(--rust);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- closing ---------- */
.page-products .closing {
  padding-top: clamp(36px, 5vw, 60px);
}

.page-products .closing-inner {
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--radius);
  padding: clamp(24px, 4vw, 48px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  position: relative;
  overflow: hidden;
}

.page-products .closing-inner::after {
  content: "";
  position: absolute;
  right: -40px;
  bottom: -60px;
  width: 220px;
  height: 220px;
  border: 1px solid rgba(232, 100, 44, 0.4);
  transform: rotate(45deg);
  pointer-events: none;
}

.page-products .closing-title {
  font-family: var(--font-display);
  font-size: var(--fs-2xl);
  line-height: 1.2;
  margin: 0;
  color: var(--paper);
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-products .closing-text__body {
  margin: 14px 0 0;
  font-size: var(--fs-base);
  line-height: 1.8;
  color: rgba(244, 239, 229, 0.78);
  max-width: 40em;
}

.page-products .closing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-self: center;
  position: relative;
  z-index: 1;
}

/* ---------- media queries ---------- */
@media (min-width: 640px) {
  .page-products .desk-feature__meta {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-products .desk-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-products .archive-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-products .faq-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-products .topics-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-products .dl-hero {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: start;
    gap: clamp(28px, 4vw, 56px);
  }

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

  .page-products .archive-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-products .arch--wide {
    grid-column: span 2;
    grid-row: span 1;
  }
  .page-products .arch--tail {
    grid-column: span 1;
  }

  .page-products .topics-body {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: start;
  }

  .page-products .verify-body {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  }

  .page-products .batch-body {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    align-items: start;
  }
  .page-products .batch-visual {
    grid-column: 1 / -1;
  }

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

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

@media (min-width: 1080px) {
  .page-products .diff-table__head,
  .page-products .diff-table__row {
    gap: 16px;
    padding: 13px 8px;
  }
  .page-products .batch-body {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr) minmax(0, 1fr);
  }
  .page-products .batch-visual {
    grid-column: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .desk-item,
  .page-products .arch,
  .page-products .faq-item,
  .page-products .topics-tab {
    transition: none;
  }
  .page-products .desk-item:hover {
    transform: none;
  }
}