.page-products {
  --prod-line: rgba(34, 230, 255, 0.24);
  --prod-line-soft: rgba(243, 240, 255, 0.1);
  --prod-key: rgba(255, 122, 26, 0.1);
  background: var(--ink-950);
  color: var(--text-hi);
}

.page-products .prod-num {
  display: inline-block;
  font-size: clamp(1.7rem, 6vw, 3rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1;
  color: var(--violet-300);
}

/* ---------- hero ---------- */
.page-products .prod-hero {
  position: relative;
  overflow: hidden;
  padding-top: calc(var(--header-h) + 20px);
  padding-bottom: clamp(28px, 6vw, 60px);
}

.page-products .prod-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    linear-gradient(118deg, rgba(123, 43, 255, 0.42) 0%, rgba(123, 43, 255, 0) 58%),
    radial-gradient(circle at 88% 8%, rgba(34, 230, 255, 0.22), transparent 62%);
  clip-path: polygon(0 0, 100% 0, 100% 84%, 0 100%);
  pointer-events: none;
}

.page-products .prod-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(22px, 4vw, 40px);
}

.page-products .prod-hero h1 {
  margin: 10px 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.1rem, 9vw, 4rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
  max-width: 16ch;
}

.page-products .prod-hero__lede {
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-mid);
}

.page-products .prod-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-products .prod-facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--prod-line-soft);
  border: 1px solid var(--prod-line);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-products .prod-facts li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 14px 16px;
  background: var(--ink-900);
}

.page-products .prod-facts__k {
  font-size: 18px;
  font-weight: 700;
  color: var(--cyan-400);
  letter-spacing: 0.02em;
}

.page-products .prod-facts__v {
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--text-mid);
}

/* ---------- section shell ---------- */
.page-products .prod-sec {
  padding-block: clamp(30px, 5.5vw, 62px);
  border-top: 1px solid var(--prod-line-soft);
}

.page-products .prod-sec__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px 14px;
  align-items: start;
  margin-bottom: clamp(20px, 3.4vw, 32px);
}

.page-products .prod-sec__head--tight {
  margin-bottom: 20px;
}

.page-products .prod-sec__head .section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.35rem, 4.6vw, 2rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin-bottom: 10px;
}

.page-products .prod-sec__head .lede {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-mid);
  max-width: 62ch;
}

.page-products .prod-note {
  margin-top: 18px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-mid);
}

.page-products .prod-note a {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 230, 255, 0.45);
  transition: color 120ms var(--ease), border-color 120ms var(--ease);
}

.page-products .prod-note a:hover {
  color: var(--orange-500);
  border-color: var(--orange-500);
}

/* ---------- compare table ---------- */
.page-products .cmp {
  border: 1px solid var(--prod-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--ink-900);
}

.page-products .cmp__head {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  padding: 12px 14px;
  background: linear-gradient(100deg, rgba(123, 43, 255, 0.28), rgba(34, 230, 255, 0.12));
  border-bottom: 1px solid var(--prod-line);
}

.page-products .cmp__spacer {
  display: none;
}

.page-products .cmp__pack {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 14px;
  letter-spacing: 0.02em;
}

.page-products .cmp__pack em {
  display: block;
  margin-top: 2px;
  font-style: normal;
  font-size: 12px;
  font-weight: 400;
  color: var(--cyan-400);
  letter-spacing: 0.06em;
}

.page-products .cmp__pack--lite em {
  color: var(--violet-300);
}

.page-products .cmp__row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px 14px;
  padding: 13px 14px;
  border-top: 1px solid var(--prod-line-soft);
  transition: background 140ms var(--ease);
}

.page-products .cmp__row:first-of-type {
  border-top: 0;
}

.page-products .cmp__row:hover {
  background: rgba(34, 230, 255, 0.06);
}

.page-products .cmp__label {
  grid-column: 1 / -1;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-mid);
}

.page-products .cmp__cell {
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--text-hi);
}

.page-products .cmp__cell::before {
  content: attr(data-col);
  display: block;
  margin-bottom: 3px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--cyan-400);
}

.page-products .cmp__row.is-key {
  background: var(--prod-key);
  box-shadow: inset 3px 0 0 var(--orange-500);
}

.page-products .cmp__row.is-key:hover {
  background: rgba(255, 122, 26, 0.15);
}

.page-products .cmp__cell .mono {
  color: var(--cyan-400);
}

/* ---------- package screenshots ---------- */
.page-products .pack-visual {
  display: grid;
  gap: 18px;
  margin-top: clamp(22px, 4vw, 34px);
}

.page-products .pack-visual__col {
  margin: 0;
  padding: 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--prod-line);
  background: var(--ink-900);
}

.page-products .pack-visual__col figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-mid);
}

.page-products .pack-visual__col figcaption .mono {
  color: var(--cyan-400);
}

.page-products .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

/* ---------- steps ---------- */
.page-products .steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  counter-reset: none;
}

.page-products .step {
  position: relative;
  padding: 18px 16px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--prod-line);
  background: var(--ink-900);
  transition: border-color 140ms var(--ease), box-shadow 140ms var(--ease), transform 140ms var(--ease);
}

.page-products .step:hover {
  border-color: var(--orange-500);
  box-shadow: 0 0 12px rgba(255, 122, 26, 0.28);
  transform: translateY(-2px);
}

.page-products .step__num {
  display: block;
  font-size: clamp(1.8rem, 6vw, 2.6rem);
  font-weight: 700;
  line-height: 1;
  color: var(--cyan-400);
  letter-spacing: 0.04em;
}

.page-products .step__title {
  margin: 10px 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
}

.page-products .step__text {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-hi);
}

.page-products .step__hint {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px dashed rgba(243, 240, 255, 0.16);
  font-size: 13px;
  line-height: 1.75;
  color: var(--text-mid);
}

.page-products .step:hover .step__hint {
  color: var(--text-hi);
}

.page-products .flow-figure {
  margin: clamp(20px, 3.6vw, 30px) 0 0;
  padding: 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--prod-line);
  background: var(--ink-900);
}

.page-products .flow-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-mid);
}

/* ---------- version ---------- */
.page-products .ver-grid {
  display: grid;
  gap: 12px;
  margin-bottom: clamp(20px, 3.6vw, 30px);
}

.page-products .ver-card {
  padding: 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--prod-line);
  background: var(--ink-800);
}

.page-products .ver-card__k {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-mid);
  margin-bottom: 8px;
}

.page-products .ver-card__v {
  font-size: clamp(1.5rem, 5vw, 2rem);
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--cyan-400);
  margin-bottom: 12px;
}

.page-products .ver-card--lite .ver-card__v {
  color: var(--violet-300);
}

.page-products .ver-card--plain .ver-card__v {
  font-family: var(--font-body);
  font-size: 20px;
  color: var(--text-hi);
}

.page-products .ver-card__n {
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-mid);
}

.page-products .loglist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .logitem {
  display: grid;
  gap: 8px;
  padding: 14px 16px;
  border-left: 2px solid var(--violet-500);
  background: var(--ink-900);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.page-products .logitem p {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text-hi);
}

.page-products .logitem .badge {
  justify-self: start;
}

.page-products .logitem__time {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-mid);
}

/* ---------- split sections ---------- */
.page-products .prod-split {
  display: grid;
  gap: clamp(20px, 4vw, 38px);
  align-items: start;
}

.page-products .prod-split__media {
  margin: 0;
  padding: 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--prod-line);
  background: var(--ink-900);
}

.page-products .prod-split__media figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-mid);
}

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

.page-products .mirror__pair {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  padding: 13px 0;
  border-top: 1px solid var(--prod-line-soft);
}

.page-products .mirror__pair:last-child {
  border-bottom: 1px solid var(--prod-line-soft);
}

.page-products .mirror__k {
  font-size: 13px;
  font-weight: 700;
  color: var(--cyan-400);
  letter-spacing: 0.06em;
}

.page-products .mirror__v {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text-hi);
}

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

.page-products .module {
  padding: 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--prod-line);
  background: var(--ink-900);
  transition: border-color 140ms var(--ease), box-shadow 140ms var(--ease);
}

.page-products .module:hover {
  border-color: var(--orange-500);
  box-shadow: 0 0 12px rgba(255, 122, 26, 0.24);
}

.page-products .module__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: rgba(123, 43, 255, 0.2);
  color: var(--cyan-400);
  margin-bottom: 10px;
}

.page-products .module__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  margin-bottom: 6px;
}

.page-products .module__text {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--text-mid);
}

/* ---------- paper insert / archive ---------- */
.page-products .paper-insert.archive {
  color: var(--ink-900);
  border-radius: var(--radius-lg);
  padding: clamp(18px, 3.6vw, 34px);
}

.page-products .archive__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px 14px;
  align-items: start;
  margin-bottom: 18px;
}

.page-products .archive__head .prod-num {
  color: var(--violet-500);
}

.page-products .archive .section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.3rem, 4.4vw, 1.9rem);
  line-height: 1.25;
  margin-bottom: 10px;
  color: var(--ink-900);
}

.page-products .archive__lede {
  font-size: 14.5px;
  line-height: 1.8;
  color: #3a3150;
  max-width: 60ch;
}

.page-products .archive__item {
  border-top: 1px solid rgba(16, 10, 28, 0.16);
  padding: 10px 0;
}

.page-products .archive__item summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2px;
  cursor: pointer;
  list-style: none;
  padding: 4px 0;
}

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

.page-products .archive__item summary::after {
  content: "展开 +";
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: #5a4b78;
  margin-top: 4px;
}

.page-products .archive__item[open] summary::after {
  content: "收起 −";
  color: var(--violet-500);
}

.page-products .archive__ver {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--ink-900);
}

.page-products .archive__meta {
  font-size: 12.5px;
  line-height: 1.6;
  color: #4a3f63;
}

.page-products .archive__body {
  padding: 8px 0 6px;
}

.page-products .archive__body p {
  font-size: 14px;
  line-height: 1.8;
  color: #332a49;
}

.page-products .archive__sum {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 8px;
}

.page-products .archive__sum .mono {
  font-size: 13px;
  letter-spacing: 0.08em;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  background: rgba(16, 10, 28, 0.08);
  color: var(--ink-900);
}

.page-products .archive__foot {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid rgba(16, 10, 28, 0.16);
  font-size: 14px;
  line-height: 1.8;
  color: #332a49;
}

.page-products .archive__foot a {
  color: #5b1fd0;
  text-decoration: none;
  border-bottom: 1px solid rgba(91, 31, 208, 0.4);
}

.page-products .archive__foot a:hover {
  color: var(--orange-500);
  border-color: var(--orange-500);
}

/* ---------- help ---------- */
.page-products .helpgrid {
  display: grid;
  gap: 12px;
}

.page-products .helpcard {
  display: block;
  padding: 18px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--prod-line);
  background: var(--ink-900);
  text-decoration: none;
  color: inherit;
  transition: border-color 140ms var(--ease), box-shadow 140ms var(--ease), transform 140ms var(--ease);
}

.page-products .helpcard:hover {
  border-color: var(--orange-500);
  box-shadow: 0 0 12px rgba(255, 122, 26, 0.26);
  transform: translateY(-2px);
}

.page-products .helpcard__tag {
  display: inline-block;
  margin-bottom: 8px;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--cyan-400);
}

.page-products .helpcard__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  margin-bottom: 8px;
}

.page-products .helpcard p {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--text-mid);
}

.page-products .helpcard__go {
  display: inline-block;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--orange-500);
}

.page-products .helpcard--cta {
  border-color: rgba(255, 122, 26, 0.5);
  background: linear-gradient(150deg, rgba(255, 122, 26, 0.16), rgba(123, 43, 255, 0.14));
}

.page-products .prod-note--wide {
  border-top: 1px dashed var(--prod-line-soft);
  padding-top: 14px;
}

/* ---------- medium ---------- */
@media (min-width: 700px) {
  .page-products .prod-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

  .page-products .step:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 38px;
    right: -12px;
    width: 12px;
    height: 2px;
    background: var(--cyan-400);
  }

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

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

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

  .page-products .logitem {
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: start;
    gap: 14px;
  }

  .page-products .logitem__time {
    align-self: center;
    white-space: nowrap;
  }
}

/* ---------- desktop ---------- */
@media (min-width: 960px) {
  .page-products .prod-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    gap: clamp(28px, 5vw, 64px);
  }

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

  .page-products .prod-sec__head {
    gap: 20px 26px;
  }

  .page-products .cmp__head,
  .page-products .cmp__row {
    grid-template-columns: minmax(130px, 1fr) minmax(0, 1.35fr) minmax(0, 1.35fr);
    align-items: start;
  }

  .page-products .cmp__spacer {
    display: block;
  }

  .page-products .cmp__label {
    grid-column: auto;
    font-size: 13px;
    align-self: center;
  }

  .page-products .cmp__cell::before {
    display: none;
  }

  .page-products .cmp__head {
    padding: 14px 18px;
  }

  .page-products .cmp__row {
    padding: 15px 18px;
  }

  .page-products .prod-split {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: clamp(28px, 5vw, 58px);
  }

  .page-products .prod-split--flip .prod-split__media {
    order: -1;
  }

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

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

  .page-products .archive__item summary {
    grid-template-columns: minmax(0, 190px) minmax(0, 1fr) auto;
    align-items: center;
    gap: 14px;
  }

  .page-products .archive__item summary::after {
    margin-top: 0;
    text-align: right;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .step:hover,
  .page-products .helpcard:hover {
    transform: none;
  }
}