.page-products {
  --pp-shadow: 6px 6px 0 rgba(169, 184, 204, 0.18);
  --pp-shadow-lift: 9px 9px 0 rgba(169, 184, 204, 0.26);
  position: relative;
}

.page-products .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: clamp(14px, 2vw, 22px) 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

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

.page-products .breadcrumb a:hover,
.page-products .breadcrumb a:focus-visible {
  color: var(--coral);
  border-bottom-color: var(--coral);
}

/* ---------- 首屏 ---------- */
.page-products .tools-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(16px, 2.6vw, 28px) 0 clamp(36px, 5.5vw, 70px);
}

.page-products .tools-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(169, 184, 204, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(169, 184, 204, 0.08) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.85), transparent 74%);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.85), transparent 74%);
  pointer-events: none;
}

.page-products .tools-hero > .wrap {
  position: relative;
  z-index: 1;
}

.page-products .tools-hero .eyebrow {
  color: var(--jade);
}

.page-products .tools-hero h1 {
  margin: 0.18em 0 0;
  max-width: 15em;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6vw, 58px);
  line-height: 1.06;
  letter-spacing: -0.015em;
}

.page-products .lede {
  margin: clamp(14px, 2vw, 22px) 0 0;
  max-width: 42em;
  font-family: var(--font-body);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--paper-dim);
}

.page-products .tool-strip {
  display: grid;
  margin-top: clamp(26px, 4vw, 44px);
  border: 2px solid var(--mist-dim);
  background: var(--ink-deep);
  box-shadow: var(--pp-shadow);
}

.page-products .tool-strip__cell {
  display: grid;
  gap: 6px;
  padding: clamp(18px, 2.6vw, 26px);
  text-decoration: none;
  color: var(--paper);
  border-bottom: 2px solid var(--line);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-products .tool-strip__cell:last-child {
  border-bottom: 0;
}

.page-products .tool-strip__cell:hover,
.page-products .tool-strip__cell:focus-visible {
  background: var(--slate);
  border-color: var(--coral);
}

.page-products .tool-strip__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--sand);
}

.page-products .tool-strip__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 20px;
  line-height: 1.2;
}

.page-products .tool-strip__desc {
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-products .tool-strip__go {
  margin-top: 4px;
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--coral);
}

.page-products .tool-strip__cell:hover .tool-strip__go,
.page-products .tool-strip__cell:focus-visible .tool-strip__go {
  color: var(--sand);
}

/* ---------- 章节骨架 ---------- */
.page-products .tool-section {
  position: relative;
  padding: clamp(40px, 6vw, 78px) 0;
}

.page-products .tool-section--band {
  background: var(--ink-deep);
  border-top: 2px solid var(--line);
  border-bottom: 2px solid var(--line);
}

.page-products .section-num {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--sand);
}

.page-products .tool-section h2,
.page-products .tool-cta h2 {
  margin: 0 0 clamp(12px, 1.6vw, 18px);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.6vw, 36px);
  line-height: 1.16;
  letter-spacing: -0.01em;
}

.page-products .section-head {
  max-width: 62em;
  margin-bottom: clamp(24px, 3.4vw, 40px);
}

.page-products .section-head p {
  margin: 0;
  font-family: var(--font-body);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--paper-dim);
}

.page-products .tool-split {
  display: grid;
  gap: clamp(18px, 3vw, 44px);
}

.page-products .tool-split__aside h2 {
  margin-bottom: clamp(10px, 1.4vw, 16px);
}

.page-products .tool-split__note {
  margin: 0;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.page-products .tool-split__main > p {
  margin: 0 0 16px;
  max-width: 40em;
  font-family: var(--font-body);
  font-size: var(--step-body);
  line-height: 1.85;
  color: var(--paper-dim);
}

.page-products .fact-list {
  list-style: none;
  margin: 0 0 clamp(20px, 3vw, 30px);
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-products .fact-list li {
  position: relative;
  padding-left: 24px;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.8;
  color: var(--paper-dim);
}

.page-products .fact-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.9em;
  width: 12px;
  height: 2px;
  background: var(--coral);
}

.page-products .split-note {
  margin: clamp(14px, 2vw, 20px) 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: 0.03em;
  color: var(--mist);
}

.page-products .split-note a {
  color: var(--jade);
  text-decoration: none;
  border-bottom: 1px solid var(--jade-deep);
}

.page-products .split-note a:hover,
.page-products .split-note a:focus-visible {
  color: var(--coral);
  border-bottom-color: var(--coral);
}

/* ---------- 图片 ---------- */
.page-products .media-frame {
  margin: clamp(20px, 3vw, 32px) 0 0;
  border: 2px solid var(--mist-dim);
  background: var(--slate);
  box-shadow: var(--pp-shadow);
  overflow: hidden;
}

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

.page-products .media-caption {
  margin: 0;
  padding: 10px 14px;
  border-top: 2px solid var(--line);
  background: var(--ink-deep);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.03em;
  color: var(--mist);
}

/* ---------- 标签目录与筛选 ---------- */
.page-products .filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: clamp(20px, 3vw, 30px);
  padding: 14px 16px;
  border: 2px solid var(--mist-dim);
  background: var(--ink);
  box-shadow: var(--pp-shadow);
}

.page-products .filter-btn {
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: 0.1em;
  padding: 9px 14px;
  background: transparent;
  color: var(--mist);
  border: 2px solid var(--line);
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-products .filter-btn:hover,
.page-products .filter-btn:focus-visible {
  border-color: var(--coral);
  color: var(--paper);
}

.page-products .filter-btn[aria-pressed="true"] {
  background: var(--coral);
  border-color: var(--coral);
  color: var(--ink-deep);
}

.page-products .filter-status {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--sand);
}

.page-products .tag-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fill, minmax(228px, 1fr));
}

.page-products .tag-card {
  display: grid;
  gap: 6px;
  align-content: start;
  padding: 16px;
  border: 2px solid var(--line);
  background: var(--slate);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-products .tag-card:hover,
.page-products .tag-card:focus-within {
  transform: translateY(-2px);
  border-color: var(--jade);
  box-shadow: var(--pp-shadow-lift);
}

.page-products .tag-card[hidden] {
  display: none;
}

.page-products .tag-card__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--sand);
}

.page-products .tag-card__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 17px;
  line-height: 1.2;
}

.page-products .tag-card__desc {
  margin: 0;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-products .tag-card__use {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}

.page-products .tag-use {
  padding: 3px 8px;
  border: 1px solid var(--jade-deep);
  font-family: var(--font-label);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--jade);
}

/* ---------- 版本对照 ---------- */
.page-products .diff-board {
  display: grid;
  margin: clamp(20px, 3vw, 30px) 0 0;
  border: 2px solid var(--mist-dim);
  box-shadow: var(--pp-shadow);
}

.page-products .diff-pane {
  display: grid;
  gap: 12px;
  align-content: start;
  padding: clamp(16px, 2.6vw, 26px);
  border-bottom: 2px solid var(--line);
}

.page-products .diff-pane:last-child {
  border-bottom: 0;
}

.page-products .diff-pane--old {
  background: var(--ink-deep);
}

.page-products .diff-pane--new {
  background: var(--paper);
  color: var(--ink);
}

.page-products .diff-pane__label {
  margin: 0;
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--sand);
}

.page-products .diff-pane--new .diff-pane__label {
  color: var(--coral-deep);
}

.page-products .diff-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-products .diff-row {
  padding: 10px 12px 10px 14px;
  border-left: 3px solid rgba(169, 184, 204, 0.35);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.7;
}

.page-products .diff-pane--old .diff-row {
  color: var(--mist);
  background: rgba(169, 184, 204, 0.07);
}

.page-products .diff-pane--new .diff-row {
  color: var(--ink);
  background: rgba(11, 31, 58, 0.05);
}

.page-products .diff-row--changed {
  border-left-color: var(--coral);
  background: rgba(255, 107, 74, 0.16);
}

.page-products .diff-pane--new .diff-row--changed {
  background: rgba(255, 107, 74, 0.14);
}

/* ---------- 版本通道与更新记录 ---------- */
.page-products .channel-strip {
  display: grid;
  border: 2px solid var(--mist-dim);
  box-shadow: var(--pp-shadow);
}

.page-products .channel {
  padding: clamp(18px, 2.6vw, 26px);
  border-top: 4px solid var(--line);
  border-bottom: 2px solid var(--line);
  background: var(--ink);
}

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

.page-products .channel--test {
  border-top-color: var(--coral);
}

.page-products .channel--stable {
  border-top-color: var(--jade);
}

.page-products .channel--archive {
  border-top-color: var(--sand);
}

.page-products .channel__tag {
  margin: 0 0 8px;
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--paper);
}

.page-products .channel__rhythm {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.4vw, 26px);
  line-height: 1.1;
  color: var(--sand);
}

.page-products .channel--test .channel__rhythm {
  color: var(--coral);
}

.page-products .channel--stable .channel__rhythm {
  color: var(--jade);
}

.page-products .channel__desc {
  margin: 0;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.75;
  color: var(--paper-dim);
}

.page-products .log-block {
  display: grid;
  gap: clamp(14px, 2vw, 20px);
  margin-top: clamp(28px, 4vw, 46px);
}

.page-products .log-block h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(18px, 2.2vw, 22px);
  line-height: 1.25;
}

.page-products .log-list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 18px;
  border-left: 2px solid var(--line);
}

.page-products .log-item {
  position: relative;
  padding: 0 0 22px 18px;
}

.page-products .log-item:last-child {
  padding-bottom: 0;
}

.page-products .log-item::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 7px;
  width: 10px;
  height: 10px;
  background: var(--jade);
  border: 2px solid var(--ink-deep);
}

.page-products .log-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--sand);
}

.page-products .log-channel {
  padding: 2px 8px;
  border: 1px solid var(--line);
  font-family: var(--font-label);
  letter-spacing: 0.12em;
  color: var(--mist);
}

.page-products .log-item > p:last-child {
  margin: 0;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.8;
  color: var(--paper-dim);
}

/* ---------- 场景与流程 ---------- */
.page-products .scene-grid {
  list-style: none;
  margin: 0 0 clamp(28px, 4vw, 48px);
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-products .scene-grid li {
  padding: 10px 0 10px 16px;
  border-left: 3px solid var(--jade-deep);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.8;
  color: var(--paper-dim);
}

.page-products .scene-grid strong {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 15px;
  color: var(--paper);
}

.page-products .steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-products .step {
  position: relative;
  padding: clamp(18px, 2.4vw, 24px);
  border: 2px solid var(--line);
  background: var(--slate);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-products .step:hover,
.page-products .step:focus-within {
  transform: translateY(-2px);
  border-color: var(--sand);
  box-shadow: var(--pp-shadow-lift);
}

.page-products .step__no {
  display: block;
  font-family: var(--font-mono);
  font-size: 32px;
  line-height: 1;
  color: var(--sand);
}

.page-products .step__title {
  margin: 12px 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 18px;
  line-height: 1.3;
}

.page-products .step__text {
  margin: 0;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.75;
  color: var(--paper-dim);
}

.page-products .step__io {
  margin: 14px 0 0;
  padding-top: 10px;
  border-top: 1px dashed rgba(232, 196, 104, 0.5);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.03em;
  color: var(--mist-dim);
  transition: color var(--dur) var(--ease);
}

.page-products .step:hover .step__io,
.page-products .step:focus-within .step__io {
  color: var(--sand);
}

/* ---------- 能力表 ---------- */
.page-products .table-scroll {
  overflow-x: auto;
  border: 2px solid var(--mist-dim);
  background: var(--ink);
  box-shadow: var(--pp-shadow);
  -webkit-overflow-scrolling: touch;
}

.page-products .plan-table {
  width: 100%;
  min-width: 660px;
  border-collapse: collapse;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.7;
}

.page-products .plan-table th,
.page-products .plan-table td {
  padding: 14px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}

.page-products .plan-table thead th {
  background: var(--ink-deep);
  border-bottom: 2px solid var(--jade-deep);
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--jade);
  white-space: nowrap;
}

.page-products .plan-table tbody th {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 14px;
  color: var(--sand);
  white-space: nowrap;
}

.page-products .plan-table tbody td {
  color: var(--paper-dim);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-products .plan-table tbody tr:hover td,
.page-products .plan-table tbody tr:focus-within td {
  background: var(--slate);
  color: var(--paper);
}

.page-products .plan-table tbody tr:last-child th,
.page-products .plan-table tbody tr:last-child td {
  border-bottom: 0;
}

/* ---------- 收尾 ---------- */
.page-products .tool-cta {
  padding: clamp(36px, 5vw, 70px) 0 clamp(44px, 6vw, 84px);
}

.page-products .tool-cta__box {
  display: grid;
  gap: 14px;
  justify-items: start;
  padding: clamp(24px, 4vw, 44px);
  border: 2px solid var(--coral);
  background: var(--ink-deep);
  box-shadow: var(--pp-shadow-lift);
}

.page-products .tool-cta__box p {
  margin: 0;
  max-width: 46em;
  font-family: var(--font-body);
  font-size: var(--step-body);
  line-height: 1.85;
  color: var(--paper-dim);
}

.page-products .tool-cta__box .btn-row {
  margin-top: 4px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-products .scene-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px 24px;
  }

  .page-products .filter-status {
    margin-left: auto;
  }
}

@media (min-width: 760px) {
  .page-products .tool-strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-products .tool-strip__cell {
    border-bottom: 0;
    border-left: 2px solid var(--line);
  }

  .page-products .tool-strip__cell:first-child {
    border-left: 0;
  }
}

@media (min-width: 820px) {
  .page-products .channel-strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-products .channel {
    border-bottom: 0;
    border-right: 2px solid var(--line);
  }

  .page-products .channel:last-child {
    border-right: 0;
  }

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

  .page-products .diff-pane {
    border-bottom: 0;
  }

  .page-products .diff-pane--old {
    border-right: 2px solid var(--line);
  }
}

@media (min-width: 860px) {
  .page-products .steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-products .step:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 50%;
    right: -16px;
    width: 16px;
    border-top: 2px dashed var(--sand);
  }
}

@media (min-width: 900px) {
  .page-products .tool-split {
    grid-template-columns: minmax(210px, 268px) minmax(0, 1fr);
    align-items: start;
  }

  .page-products .tool-split__aside {
    padding-top: 4px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .tag-card,
  .page-products .step,
  .page-products .tool-strip__cell,
  .page-products .filter-btn,
  .page-products .plan-table tbody td,
  .page-products .step__io {
    transition: none;
  }

  .page-products .tag-card:hover,
  .page-products .step:hover,
  .page-products .tag-card:focus-within,
  .page-products .step:focus-within {
    transform: none;
  }
}