.page-products {
  background: var(--sand);
  color: var(--ink);
  font-family: var(--font-body);
  padding-bottom: 56px;
  overflow-x: hidden;
}

.page-products .visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 面包屑 ---------- */
.page-products .crumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 20px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--slate);
}
.page-products .crumbs a {
  color: var(--slate);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}
.page-products .crumbs a:hover,
.page-products .crumbs a:focus-visible {
  color: var(--ink);
  border-bottom-color: var(--gold);
  outline: none;
}
.page-products .crumbs__sep { color: var(--greige); }
.page-products .crumbs [aria-current="page"] { color: var(--ink); }

/* ---------- 首屏 ---------- */
.page-products .prod-hero {
  padding-top: 34px;
  padding-bottom: 4px;
}
.page-products .prod-hero .kicker {
  display: block;
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--slate);
}
.page-products .prod-hero .title-xl {
  margin: 0 0 18px;
  max-width: 21ch;
}
.page-products .prod-hero__lede {
  max-width: 64ch;
  margin: 0 0 26px;
  color: var(--greige);
}

.page-products .prod-tabs {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.page-products .prod-tabs__item {
  flex: 1 1 150px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 15px;
  border: 1px solid var(--ink);
  border-radius: 4px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease);
}
.page-products .prod-tabs__item .mono {
  font-size: 11px;
  letter-spacing: 0.1em;
  opacity: 0.75;
}
.page-products .prod-tabs__item--ochre {
  flex-grow: 3;
  background: var(--ochre);
  border-color: var(--ochre);
  color: var(--sand);
}
.page-products .prod-tabs__item--gum {
  flex-grow: 2;
  background: var(--gum);
  border-color: var(--gum);
  color: var(--sand);
}
.page-products .prod-tabs__item--gold {
  flex-grow: 1.2;
  background: var(--gold-soft);
  color: var(--ink);
}
.page-products .prod-tabs__item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hard);
}

/* ---------- 工具台 ---------- */
.page-products .bench {
  display: grid;
  gap: 34px;
  padding-top: 44px;
  padding-bottom: 52px;
  margin-top: 26px;
  border-top: 3px solid var(--ink);
}
.page-products .bench__spec .kicker {
  display: block;
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--slate);
}
.page-products .bench__spec .title-md {
  margin: 0 0 22px;
}

.page-products .spec-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 20px;
}
.page-products .spec-list__item {
  padding-left: 16px;
  border-left: 3px solid var(--line);
}
.page-products .spec-list__item:nth-child(1) { border-left-color: var(--ochre); }
.page-products .spec-list__item:nth-child(2) { border-left-color: var(--gum); }
.page-products .spec-list__item:nth-child(3) { border-left-color: var(--gold); }
.page-products .spec-list__no {
  display: block;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--slate);
  margin-bottom: 4px;
}
.page-products .spec-list__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 500;
  letter-spacing: -0.01em;
}
.page-products .spec-list__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--greige);
}
.page-products .bench__note {
  margin: 22px 0 0;
  padding: 14px 16px;
  border: 1px dashed var(--slate);
  border-radius: 4px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
}

.page-products .bench__demos {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.page-products .demo {
  border: 1px solid var(--ink);
  border-radius: 4px;
  background: var(--sand);
  padding: 14px;
  min-width: 0;
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease);
}
.page-products .demo:hover,
.page-products .demo:focus-within {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hard);
}
.page-products .demo__label {
  margin: 0 0 12px;
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--slate);
  text-transform: uppercase;
}
.page-products .demo__hint {
  margin: 12px 0 0;
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--greige);
}

/* 清单表格演示 */
.page-products .demo-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 11px;
  table-layout: fixed;
}
.page-products .demo-table th {
  text-align: left;
  padding: 4px 3px;
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--slate);
  border-bottom: 1px solid var(--ink);
}
.page-products .demo-table td {
  padding: 5px 3px;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--ink);
}
.page-products .demo-table .mono { font-size: 10px; color: var(--slate); }
.page-products .demo-table tbody tr:hover td {
  background: var(--gold-soft);
  color: var(--ink);
}

/* 条件组合演示 */
.page-products .cond {
  display: grid;
  gap: 10px;
}
.page-products .cond__box {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 7px 9px;
  border: 1px dashed var(--slate);
  border-radius: 4px;
  font-size: 12px;
}
.page-products .cond__box span:last-child {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.04em;
  color: var(--slate);
}
.page-products .cond__box + .cond__box::before {
  content: "";
  position: absolute;
  top: -10px;
  left: 14px;
  width: 1px;
  height: 9px;
  background: var(--slate);
}

/* 归档盒演示 */
.page-products .arc-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 5px;
}
.page-products .arc-cell {
  position: relative;
  aspect-ratio: 1 / 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: var(--sand);
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--slate);
  cursor: default;
  transition: background var(--t) var(--ease), border-color var(--t) var(--ease), color var(--t) var(--ease);
}
.page-products .arc-cell__n {
  font-size: 8px;
  opacity: 0;
  transition: opacity var(--t) var(--ease);
}
.page-products .arc-cell:hover,
.page-products .arc-cell:focus-visible {
  background: var(--gold-soft);
  border-color: var(--ink);
  color: var(--ink);
  outline: none;
}
.page-products .arc-cell:hover .arc-cell__n,
.page-products .arc-cell:focus-visible .arc-cell__n {
  opacity: 1;
}

/* 格式图标演示 */
.page-products .fmt-icons {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}
.page-products .fmt-icon {
  position: relative;
  padding: 14px 4px 10px;
  border: 1px solid var(--ink);
  border-radius: 3px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--ink);
  background: var(--sand);
}
.page-products .fmt-icon::after {
  content: "";
  position: absolute;
  top: -1px;
  right: -1px;
  width: 0;
  height: 0;
  border-left: 11px solid transparent;
  border-top: 11px solid var(--gold);
}

/* ---------- 通用章节 ---------- */
.page-products .sec {
  padding-top: 52px;
  padding-bottom: 52px;
  border-top: 1px solid var(--line);
}
.page-products .sec__head {
  margin-bottom: 26px;
}
.page-products .sec__head--right {
  text-align: left;
}
.page-products .sec__head .kicker {
  display: block;
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--slate);
}
.page-products .sec__head .title-lg {
  margin: 0;
  max-width: 26ch;
}

.page-products .sec__grid {
  display: grid;
  gap: 26px;
  align-items: start;
}
.page-products .sec__text .prose {
  margin: 0 0 16px;
}
.page-products .sec__text .prose:last-child {
  margin-bottom: 0;
}
.page-products .sec__cols {
  display: grid;
  gap: 18px;
}
.page-products .sec__cols .prose {
  margin: 0;
}

.page-products .sec__media {
  margin: 0;
}
.page-products .sec__media--full {
  margin-bottom: 24px;
}
.page-products .sec__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--ink);
  border-radius: 4px;
}

/* ---------- 格式选择器 ---------- */
.page-products .fmt-picker {
  margin-top: 28px;
  padding: 18px;
  border: 1px solid var(--ink);
  border-radius: 4px;
  background: var(--gold-soft);
}
.page-products .fmt-picker__input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}
.page-products .fmt-picker__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}
.page-products .fmt-picker__tab {
  flex: 1 1 90px;
  padding: 9px 12px;
  border: 1px solid var(--ink);
  border-radius: 4px;
  background: var(--sand);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-align: center;
  color: var(--ink);
  cursor: pointer;
  transition: background var(--t) var(--ease), color var(--t) var(--ease), transform var(--t) var(--ease);
}
.page-products .fmt-picker__tab:hover {
  transform: translateY(-2px);
}
.page-products .fmt-picker__input:focus-visible + .fmt-picker__input + .fmt-picker__input + .fmt-picker__tabs .fmt-picker__tab {
  outline: 3px solid var(--gold);
  outline-offset: 2px;
}
.page-products #fmt-csv:checked ~ .fmt-picker__tabs .fmt-picker__tab[for="fmt-csv"],
.page-products #fmt-xlsx:checked ~ .fmt-picker__tabs .fmt-picker__tab[for="fmt-xlsx"],
.page-products #fmt-json:checked ~ .fmt-picker__tabs .fmt-picker__tab[for="fmt-json"] {
  background: var(--ink);
  color: var(--sand);
  border-color: var(--ink);
}

.page-products .fmt-picker__panel {
  border: 1px solid var(--ink);
  border-radius: 4px;
  background: var(--sand);
  padding: 14px;
  overflow-x: auto;
}
.page-products .fmt-sample {
  display: none;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.85;
  letter-spacing: 0.02em;
  color: var(--ink);
  white-space: pre;
}
.page-products #fmt-csv:checked ~ .fmt-picker__panel .fmt-sample--csv,
.page-products #fmt-xlsx:checked ~ .fmt-picker__panel .fmt-sample--xlsx,
.page-products #fmt-json:checked ~ .fmt-picker__panel .fmt-sample--json {
  display: block;
}

.page-products .fmt-picker__note {
  margin: 12px 0 0;
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--ink);
  opacity: 0.72;
}

/* ---------- 场景卡 ---------- */
.page-products .scenes {
  display: grid;
  gap: 16px;
  margin-top: 8px;
}
.page-products .scene {
  border: 1px solid var(--ink);
  border-radius: 4px;
  background: var(--sand);
  padding: 20px;
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease);
}
.page-products .scene:hover,
.page-products .scene:focus-within {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hard);
}
.page-products .scene:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 3px;
}
.page-products .scene__kicker {
  margin: 0 0 8px;
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--ochre);
  text-transform: uppercase;
}
.page-products .scene__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 500;
  line-height: 1.35;
  letter-spacing: -0.01em;
}
.page-products .scene__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--greige);
}
.page-products .scene__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 7px;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 220ms var(--ease), opacity 120ms var(--ease), margin-top 220ms var(--ease);
}
.page-products .scene__steps li {
  display: flex;
  gap: 9px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink);
  padding-top: 7px;
  border-top: 1px solid var(--line);
}
.page-products .scene__steps .mono {
  font-size: 10px;
  color: var(--slate);
  flex: 0 0 12px;
}
.page-products .scene:hover .scene__steps,
.page-products .scene:focus-within .scene__steps {
  max-height: 260px;
  opacity: 1;
  margin-top: 16px;
}

/* ---------- 版本时间轴 ---------- */
.page-products .sec--ver {
  background: var(--gum);
  color: var(--sand);
  border-top: 3px solid var(--ink);
  border-radius: 4px;
  padding-left: 18px;
  padding-right: 18px;
}
.page-products .sec--ver .sec__head .kicker {
  color: var(--gold);
}
.page-products .sec--ver .title-lg {
  color: var(--sand);
}
.page-products .tl {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}
.page-products .tl__item {
  display: grid;
  gap: 10px;
  padding: 18px 0;
  border-top: 1px solid rgba(244, 237, 227, 0.22);
}
.page-products .tl__item:first-child {
  border-top: 1px solid rgba(244, 237, 227, 0.45);
}
.page-products .tl__year {
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--gold);
}
.page-products .tl__body h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 500;
  color: var(--sand);
  letter-spacing: -0.01em;
}
.page-products .tl__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(244, 237, 227, 0.78);
  max-width: 56ch;
}

/* ---------- 尾部链接 ---------- */
.page-products .tail {
  border-top: 3px solid var(--ink);
}
.page-products .tail .title-md {
  margin: 0 0 20px;
}
.page-products .tail__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-products .tail__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 15px 18px;
  border: 1px solid var(--ink);
  border-radius: 4px;
  background: var(--sand);
  color: var(--ink);
  text-decoration: none;
  font-size: 15px;
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease), background var(--t) var(--ease);
}
.page-products .tail__link .mono {
  color: var(--ochre);
  font-size: 13px;
}
.page-products .tail__link:hover,
.page-products .tail__link:focus-visible {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hard);
  background: var(--gold-soft);
  outline: none;
}

/* ---------- 键盘焦点统一 ---------- */
.page-products a:focus-visible,
.page-products button:focus-visible,
.page-products [tabindex]:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 2px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-products .sec__cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px;
  }
  .page-products .scenes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-products .arc-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-products .bench {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 44px;
    align-items: start;
  }
  .page-products .sec__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 40px;
  }
  .page-products .sec__grid--rev .sec__media {
    order: -1;
  }
  .page-products .sec__grid--rev {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
  .page-products .sec__head--right {
    text-align: right;
  }
  .page-products .sec__head--right .title-lg {
    margin-left: auto;
  }
  .page-products .scenes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-products .tl__item {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 24px;
    align-items: start;
  }
  .page-products .sec--ver {
    padding-left: 34px;
    padding-right: 34px;
  }
  .page-products .arc-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1100px) {
  .page-products .prod-hero .title-xl {
    max-width: 20ch;
  }
}

@media (hover: none) {
  .page-products .scene__steps {
    max-height: none;
    opacity: 1;
    margin-top: 16px;
  }
  .page-products .arc-cell__n {
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products *,
  .page-products *::before,
  .page-products *::after {
    transition-duration: 0ms !important;
    animation-duration: 0ms !important;
  }
}