/* ============================================================
   专区与方案 /solutions/
   页面作用域：.page-products
   ============================================================ */

.page-products {
  display: block;
  overflow-x: clip;
  background: var(--paper-050);
  color: var(--ink-900);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
}

/* ---------- 通用排版组件（页面内定义） ---------- */

.page-products .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.page-products .eyebrow {
  margin: 0 0 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold-600);
}

.page-products .t-h1 {
  margin: 0 0 1.1rem;
  font-family: var(--font-title);
  font-weight: 900;
  font-size: clamp(2rem, 6.2vw, 3.4rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink-900);
  text-wrap: balance;
}

.page-products .t-h2 {
  margin: 0;
  font-family: var(--font-title);
  font-weight: 900;
  font-size: clamp(1.5rem, 4vw, 2.05rem);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--ink-900);
}

.page-products .lede {
  max-width: 34em;
  margin: 0 0 1rem;
  font-size: clamp(1.0625rem, 1.9vw, 1.25rem);
  line-height: 1.85;
  color: var(--ink-900);
}

.page-products .prose {
  max-width: 40em;
  margin: 0 0 1rem;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--ink-900);
}

.page-products .note-line {
  margin-top: 1.25rem;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--muted-500);
}

.page-products .zone--ink .prose,
.page-products .zone--deep .prose {
  color: var(--porcelain-000);
}

.page-products .zone--ink .note-line,
.page-products .zone--deep .note-line {
  color: var(--blue-200);
}

.page-products .zone--ink .eyebrow,
.page-products .zone--deep .eyebrow {
  color: var(--gold-300);
}

.page-products .zone--ink .t-h2,
.page-products .zone--deep .t-h2 {
  color: var(--porcelain-000);
}

/* ---------- 分区标记 ---------- */

.page-products .zone-mark {
  position: relative;
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  margin-top: 0.45em;
  border: 1px solid currentColor;
  border-radius: 2px;
  color: var(--gold-600);
}

.page-products .zone-mark::before {
  content: "";
  position: absolute;
  inset: 5px;
  border: 1px solid currentColor;
  border-radius: 1px;
}

.page-products .zone-mark::after {
  content: "";
  position: absolute;
  left: -6px;
  right: -6px;
  top: 50%;
  height: 1px;
  background: currentColor;
}

.page-products .zone--ink .zone-mark,
.page-products .zone--deep .zone-mark {
  color: var(--gold-300);
}

.page-products .zone-head {
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
  margin: 0 0 clamp(16px, 2.4vw, 26px);
}

.page-products .zone-head-text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-products .zone-head-text .t-h2 {
  margin: 0;
}

/* ---------- 图框与图注 ---------- */

.page-products .figure-frame {
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--ink-700);
  aspect-ratio: 3 / 2;
}

.page-products .figure-frame--wide {
  aspect-ratio: 16 / 10;
}

.page-products .figure-frame--tall {
  aspect-ratio: 4 / 3;
}

.page-products .figure-frame--square {
  aspect-ratio: 1 / 1;
}

.page-products .figure-frame img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-products .media-caption {
  display: flex;
  gap: 0.6em;
  margin: 0.75rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.7;
  letter-spacing: 0.05em;
  color: var(--muted-500);
}

.page-products .media-caption-no {
  flex: 0 0 auto;
  color: var(--gold-600);
}

.page-products .zone--ink .media-caption,
.page-products .zone--deep .media-caption {
  color: var(--blue-200);
}

.page-products .zone--ink .media-caption-no,
.page-products .zone--deep .media-caption-no {
  color: var(--gold-300);
}

/* ---------- 01 入口 ---------- */

.page-products .zone-intro {
  padding-block: clamp(36px, 6vw, 76px) clamp(44px, 8vw, 96px);
}

.page-products .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0;
  margin: 0 0 clamp(24px, 4vw, 44px);
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  color: var(--muted-500);
}

.page-products .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin-inline: 0.55em;
  color: var(--muted-500);
  opacity: 0.55;
}

.page-products .breadcrumb-link {
  color: var(--blue-700);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}

.page-products .breadcrumb-link:hover {
  color: var(--gold-600);
  border-bottom-color: var(--gold-300);
}

.page-products .breadcrumb-current {
  color: var(--ink-900);
}

.page-products .intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 56px);
}

@media (min-width: 960px) {
  .page-products .intro-grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: start;
  }
}

.page-products .intro-main .prose:last-child {
  margin-bottom: 0;
}

.page-products .intro-meta {
  padding: clamp(20px, 3vw, 32px);
  border-radius: var(--radius-lg);
  background: var(--paper-200);
}

.page-products .meta-label {
  margin: 0 0 1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--muted-500);
}

.page-products .meta-list {
  margin: 0;
}

.page-products .meta-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 0.65rem;
  border-bottom: 1px solid var(--hairline-ink);
}

.page-products .meta-row:last-child {
  border-bottom: 0;
}

.page-products .meta-row dt {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--muted-500);
}

.page-products .meta-row dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--ink-900);
  text-align: right;
  white-space: nowrap;
}

/* ---------- 02 六栏总览 ---------- */

.page-products .zone-columns {
  position: relative;
  overflow: hidden;
  padding-block: clamp(48px, 8vw, 96px);
}

.page-products .columns-bg {
  position: absolute;
  top: 6%;
  right: -8%;
  z-index: 0;
  width: 44%;
  max-width: 560px;
  height: auto;
  opacity: 0.16;
  border-radius: var(--radius-lg);
  pointer-events: none;
}

.page-products .zone-columns .shell {
  position: relative;
  z-index: 1;
}

.page-products .columns-lede {
  max-width: 36em;
}

.page-products .column-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--hairline-ink);
}

@media (min-width: 820px) {
  .page-products .column-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(28px, 4.5vw, 64px);
  }
}

.page-products .column-item {
  position: relative;
  padding: clamp(18px, 2.6vw, 26px) 0;
  border-bottom: 1px solid var(--hairline-ink);
  scroll-margin-top: 120px;
  transition: background-color var(--dur-slow) var(--ease);
}

.page-products .column-item::before {
  content: "";
  position: absolute;
  left: -16px;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--gold-600);
  opacity: 0;
  transition: opacity var(--dur-mid) var(--ease);
}

.page-products .column-item:target,
.page-products .column-item.is-target {
  background: linear-gradient(90deg, var(--paper-200) 0%, rgba(227, 217, 198, 0) 82%);
}

.page-products .column-item:target::before,
.page-products .column-item.is-target::before {
  opacity: 1;
}

.page-products .column-item:target .column-no,
.page-products .column-item.is-target .column-no {
  color: var(--blue-700);
}

.page-products .column-no {
  margin: 0 0 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.12em;
  color: var(--gold-600);
}

.page-products .column-title {
  margin: 0 0 0.5rem;
  font-family: var(--font-title);
  font-weight: 800;
  font-size: clamp(1.15rem, 2vw, 1.4rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--ink-900);
}

.page-products .column-desc {
  max-width: 34em;
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--muted-500);
}

/* ---------- 03 停顿区 ---------- */

.page-products .zone-pause {
  padding-block: clamp(46px, 9vw, 104px);
}

.page-products .pause-line {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(2rem, 8.4vw, 5.2rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--blue-200);
  overflow-wrap: anywhere;
}

.page-products .pause-note {
  margin: clamp(14px, 2vw, 22px) 0 0;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--blue-200);
  opacity: 0.72;
}

/* ---------- 04 订阅与抽屉 ---------- */

.page-products .zone-subscribe {
  padding-block: clamp(52px, 8vw, 100px);
}

.page-products .sub-figure {
  margin: 0 0 clamp(30px, 4.5vw, 48px);
}

.page-products .subscribe-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 48px);
}

@media (min-width: 960px) {
  .page-products .subscribe-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }
}

.page-products .sub-points {
  display: grid;
  gap: 0;
  margin: clamp(20px, 3vw, 30px) 0;
  padding: 0;
  list-style: none;
}

.page-products .sub-points li {
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
  padding-block: 0.85rem;
  border-bottom: 1px solid var(--hairline-gold);
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--porcelain-000);
}

.page-products .sub-point-no {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--gold-300);
}

.page-products .drawer {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--hairline-gold);
  border-radius: var(--radius-lg);
  background: var(--ink-700);
}

.page-products .drawer-handle {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  width: 100%;
  padding: 1rem clamp(16px, 2.4vw, 24px);
  border: 0;
  border-left: 3px solid transparent;
  background: transparent;
  color: var(--porcelain-000);
  font-family: var(--font-title);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  text-align: left;
  cursor: pointer;
  transition: border-color var(--dur-mid) var(--ease), background-color var(--dur-mid) var(--ease);
}

.page-products .drawer-handle:hover {
  border-left-color: var(--gold-300);
}

.page-products .drawer[data-open] .drawer-handle {
  border-left-color: var(--gold-600);
  background: rgba(226, 192, 121, 0.07);
}

.page-products .drawer-handle-no {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--gold-300);
}

.page-products .drawer-handle-text {
  flex: 1 1 auto;
}

.page-products .drawer-handle-state {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  color: var(--blue-200);
  transition: color var(--dur-fast) var(--ease);
}

.page-products .drawer[data-open] .drawer-handle-state {
  color: var(--gold-300);
}

.page-products .drawer-panel {
  overflow: hidden;
  border-top: 1px solid var(--hairline-gold);
  transition: max-height var(--dur-mid) var(--ease), opacity var(--dur-mid) var(--ease);
}

.js .page-products .drawer:not([data-open]) .drawer-panel {
  max-height: 0;
  opacity: 0;
  border-top-color: transparent;
}

.page-products .drawer-body {
  display: grid;
  gap: 0;
  padding: clamp(14px, 2.2vw, 22px) clamp(16px, 2.4vw, 24px) 0;
}

.page-products .drawer-row {
  display: grid;
  gap: 0.35rem;
  padding-block: 0.85rem;
  border-bottom: 1px solid var(--hairline-gold);
}

.page-products .drawer-row:last-child {
  border-bottom: 0;
}

.page-products .drawer-row-title {
  margin: 0;
  font-family: var(--font-title);
  font-size: 0.9375rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--porcelain-000);
}

.page-products .drawer-row-desc {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--blue-200);
}

.page-products .disclosure-note {
  margin: 0;
  padding: 0.9rem clamp(16px, 2.4vw, 24px) clamp(16px, 2.4vw, 22px);
  font-size: 0.8125rem;
  line-height: 1.8;
  color: var(--blue-200);
}

/* ---------- 05 导出与归档 ---------- */

.page-products .zone-export {
  padding-block: clamp(48px, 8vw, 96px);
}

.page-products .export-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 52px);
}

@media (min-width: 960px) {
  .page-products .export-grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: start;
  }
}

.page-products .export-figure {
  margin: 0;
}

.page-products .format-table {
  width: 100%;
  margin: clamp(22px, 3vw, 32px) 0 0;
  border-collapse: collapse;
  font-size: 0.875rem;
  line-height: 1.7;
}

.page-products .format-table th,
.page-products .format-table td {
  padding: 0.72rem 0.7rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--hairline-ink);
}

.page-products .format-table thead th {
  border-bottom: 1px solid var(--gold-600);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--gold-600);
}

.page-products .format-table tbody tr:nth-child(odd) {
  background: var(--paper-200);
}

.page-products .format-table tbody th {
  font-weight: 500;
  font-size: 0.8125rem;
  color: var(--muted-500);
  white-space: nowrap;
}

.page-products .format-table td.num {
  font-family: var(--font-mono);
  color: var(--blue-700);
}

/* ---------- 06 iOS 版本号 ---------- */

.page-products .zone-ios {
  padding-block: clamp(48px, 8vw, 96px);
  scroll-margin-top: 120px;
}

.page-products .ios-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 52px);
}

@media (min-width: 960px) {
  .page-products .ios-grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    align-items: start;
  }
}

.page-products .version-chip {
  display: inline-block;
  margin: clamp(16px, 2.6vw, 26px) 0;
  padding: 0.55rem 1.15rem;
  border-radius: var(--radius-pill);
  background: var(--blue-700);
  color: var(--porcelain-000);
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2.6vw, 1.45rem);
  line-height: 1.3;
  letter-spacing: 0.02em;
  overflow-wrap: anywhere;
}

.page-products .ios-figure {
  margin: 0;
}

/* ---------- 07 引用关系 ---------- */

.page-products .zone-refs {
  padding-block: clamp(48px, 8vw, 96px);
}

.page-products .refs-lede {
  max-width: 38em;
}

.page-products .refs-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.5vw, 44px);
  margin-top: clamp(24px, 4vw, 40px);
}

@media (min-width: 900px) {
  .page-products .refs-grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    align-items: center;
  }
}

.page-products .refs-map {
  min-width: 0;
}

.page-products .ref-map {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
}

.page-products .ref-node {
  fill: var(--porcelain-000);
  stroke: var(--paper-200);
  stroke-width: 1;
}

.page-products .ref-node-no {
  fill: var(--gold-600);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
}

.page-products .ref-node-text {
  fill: var(--ink-900);
  font-family: var(--font-title);
  font-size: 17px;
  font-weight: 700;
}

.page-products .ref-line {
  fill: none;
  stroke: var(--blue-200);
  stroke-width: 1.2;
  transition: stroke var(--dur-fast) var(--ease), stroke-width var(--dur-fast) var(--ease);
}

.page-products .ref-label {
  fill: var(--muted-500);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
}

.page-products .ref-label--end {
  text-anchor: end;
}

.page-products .ref-path:hover .ref-line {
  stroke: var(--gold-600);
  stroke-width: 2;
}

.page-products .ref-path:hover .ref-label {
  fill: var(--gold-600);
}

.page-products .refs-list {
  counter-reset: refitem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .refs-list li {
  position: relative;
  padding: 0.9rem 0 0.9rem 2.5rem;
  border-bottom: 1px solid var(--hairline-ink);
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--ink-900);
}

.page-products .refs-list li:first-child {
  border-top: 1px solid var(--hairline-ink);
}

.page-products .refs-list li::before {
  counter-increment: refitem;
  content: counter(refitem, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.98rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--blue-700);
}

/* ---------- 08 前置条件 ---------- */

.page-products .zone-prereq {
  padding-block: clamp(48px, 8vw, 96px);
}

.page-products .prereq-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 52px);
}

@media (min-width: 960px) {
  .page-products .prereq-grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr);
    align-items: start;
  }
}

.page-products .prereq-list {
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  list-style: none;
}

.page-products .prereq-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-rows: auto auto;
  gap: 0.25rem 1rem;
  padding-block: clamp(16px, 2.4vw, 22px);
  border-top: 1px solid var(--hairline-ink);
}

.page-products .prereq-item:last-child {
  border-bottom: 1px solid var(--hairline-ink);
}

.page-products .prereq-no {
  grid-row: 1 / 3;
  align-self: start;
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 3.4vw, 2rem);
  font-weight: 500;
  line-height: 1;
  color: var(--gold-600);
}

.page-products .prereq-title {
  margin: 0;
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 1.0625rem;
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--ink-900);
}

.page-products .prereq-desc {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--muted-500);
}

.page-products .prereq-figure {
  margin: 0;
}

/* ---------- 09 收束 ---------- */

.page-products .zone-closing {
  padding-block: clamp(40px, 7vw, 88px);
}

.page-products .closing-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1rem;
  padding: clamp(20px, 3vw, 32px) clamp(20px, 3vw, 36px);
  border: 1px solid var(--gold-300);
  border-radius: var(--radius-lg);
  background: var(--paper-200);
}

.page-products .closing-line {
  flex: 1 1 auto;
  min-width: 0;
  margin: 0;
  font-family: var(--font-title);
  font-weight: 700;
  font-size: clamp(1rem, 2vw, 1.25rem);
  line-height: 1.6;
  letter-spacing: -0.01em;
  color: var(--ink-900);
}

/* ---------- 窄屏校正 ---------- */

@media (max-width: 760px) {
  .page-products .columns-bg {
    display: none;
  }

  .page-products .column-item::before {
    left: -8px;
  }

  .page-products .format-table th,
  .page-products .format-table td {
    padding: 0.6rem 0.45rem;
    font-size: 0.8125rem;
  }

  .page-products .format-table tbody th {
    white-space: normal;
  }

  .page-products .refs-list li {
    padding-left: 2rem;
  }
}

/* ---------- 动效降级 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-products .column-item,
  .page-products .column-item::before,
  .page-products .drawer-handle,
  .page-products .drawer-handle-state,
  .page-products .drawer-panel,
  .page-products .ref-line,
  .page-products .breadcrumb-link {
    transition-duration: 1ms;
  }
}