/* ============================================================
   page-products — 内容目录
   作用域：.page-products
   ============================================================ */

.page-products {
  background: var(--c-ink);
  color: var(--c-paper);
}

.page-products .cat-main { min-width: 0; }

/* ---------- 首屏 ---------- */

.page-products .cat-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: calc(var(--shell-offset) + 2rem) 0 clamp(2.5rem, 6vw, 4.25rem);
  background:
    radial-gradient(110% 82% at 88% -12%, rgba(0, 229, 255, 0.13), transparent 62%),
    linear-gradient(180deg, var(--c-ink) 0%, var(--c-ink-2) 100%);
  border-bottom: 1px solid var(--line);
}

.page-products .cat-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(138, 106, 60, 0.11) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(138, 106, 60, 0.11) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
}

.page-products .breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0 0 clamp(1.75rem, 4vw, 3rem);
  font-family: var(--f-mono);
  font-size: var(--fs-13);
  letter-spacing: 0.08em;
  color: var(--c-mist);
}

.page-products .breadcrumb a {
  color: var(--c-mist);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.page-products .breadcrumb a:hover { color: var(--c-cyan); }

.page-products .breadcrumb span::before {
  content: "/";
  margin-right: 0.45rem;
  color: var(--c-copper);
}

.page-products .cat-hero .eyebrow {
  margin: 0 0 1.15rem;
  font-family: var(--f-mono);
  font-size: var(--fs-13);
  letter-spacing: 0.2em;
  color: var(--c-cyan);
}

.page-products .cat-hero h1 {
  max-width: 17ch;
  margin: 0 0 clamp(1.25rem, 3vw, 1.9rem);
  font-family: var(--f-head);
  font-size: var(--fs-64);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--c-paper);
}

.page-products .cat-lede {
  max-width: 44ch;
  margin: 0 0 clamp(2rem, 5vw, 3.25rem);
  font-size: var(--fs-17);
  line-height: 1.78;
  color: var(--c-mist);
}

/* 顶部目录索引 */

.page-products .cat-toc {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .cat-toc a {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  padding: 0.95rem 0.9rem 1.05rem;
  background: var(--c-slate);
  color: var(--c-paper);
  text-decoration: none;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-products .cat-toc a:hover {
  background: rgba(0, 229, 255, 0.1);
  color: var(--c-cyan);
}

.page-products .cat-toc .mono {
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  color: var(--c-cyan);
}

.page-products .cat-toc em {
  font-style: normal;
  font-size: var(--fs-15);
  line-height: 1.42;
}

@media (min-width: 720px) {
  .page-products .cat-toc { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (min-width: 1060px) {
  .page-products .cat-toc { grid-template-columns: repeat(6, minmax(0, 1fr)); }
}

/* ---------- 主体外壳 ---------- */

.page-products .cat-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2rem;
  padding-block: clamp(2.5rem, 6vw, 4.25rem) clamp(3rem, 7vw, 4.5rem);
  align-items: start;
}

@media (min-width: 1040px) {
  .page-products .cat-shell {
    grid-template-columns: minmax(0, 1fr) 172px;
    gap: clamp(2rem, 4vw, 3.75rem);
  }
}

/* 右栏固定索引 */

.page-products .cat-rail { display: none; }

@media (min-width: 1040px) {
  .page-products .cat-rail {
    display: block;
    position: sticky;
    top: calc(var(--hdr-h-condensed) + var(--axis-h) + 1.75rem);
    align-self: start;
    padding-left: 1.05rem;
    border-left: 1px solid var(--line);
  }
}

.page-products .rail-title {
  margin: 0 0 0.85rem;
  font-size: 0.6875rem;
  letter-spacing: 0.22em;
  color: var(--c-copper);
}

.page-products .rail-list {
  display: flex;
  flex-direction: column;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .rail-list a {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: var(--fs-13);
  line-height: 1.5;
  color: var(--c-mist);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.page-products .rail-list a:hover { color: var(--c-cyan); }

.page-products .rail-list .mono {
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--c-cyan);
  opacity: 0.75;
}

/* ---------- 章节通用 ---------- */

.page-products .cat-sec {
  padding-top: clamp(2.4rem, 5vw, 3.75rem);
  border-top: 1px solid var(--line-soft);
  scroll-margin-top: calc(var(--hdr-h-condensed) + var(--axis-h) + 1.5rem);
}

.page-products .cat-sec:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-products .cat-sec + .cat-sec {
  margin-top: clamp(2.4rem, 5vw, 3.75rem);
}

.page-products .sec-head {
  display: flex;
  align-items: baseline;
  gap: clamp(0.75rem, 2vw, 1.4rem);
  margin-bottom: clamp(1.25rem, 3vw, 1.9rem);
}

.page-products .sec-no {
  flex: none;
  padding-top: 0.3rem;
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  color: var(--c-cyan);
}

.page-products .cat-sec h2 {
  margin: 0;
  font-family: var(--f-head);
  font-size: clamp(1.5rem, 2.4vw, 2.1rem);
  font-weight: 700;
  line-height: 1.26;
  letter-spacing: -0.015em;
  color: var(--c-paper);
}

.page-products .prose {
  max-width: 36em;
  font-size: var(--fs-17);
  line-height: 1.75;
  color: var(--c-paper);
}

.page-products .prose p { margin: 0 0 1.05em; }
.page-products .prose p:last-child { margin-bottom: 0; }

.page-products .prose a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
  transition: border-color var(--dur) var(--ease);
}

.page-products .prose a:hover { border-bottom-color: var(--c-cyan); }

.page-products .sec-foot {
  max-width: 46em;
  margin: clamp(1.1rem, 2.6vw, 1.65rem) 0 0;
  font-size: var(--fs-15);
  line-height: 1.82;
  color: var(--c-mist);
}

/* ---------- 图版 ---------- */

.page-products .plate { margin: 0; }

.page-products .plate-media {
  position: relative;
  overflow: hidden;
  background: var(--c-slate);
  border: 1px solid var(--line);
}

.page-products .plate-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.86) contrast(1.06) brightness(0.92);
  -webkit-mask-image: linear-gradient(180deg, #000 0%, #000 66%, transparent 100%);
  mask-image: linear-gradient(180deg, #000 0%, #000 66%, transparent 100%);
}

.page-products .plate-caption {
  margin-top: 0.6rem;
  font-family: var(--f-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  line-height: 1.6;
  color: var(--c-mist);
}

/* ---------- 两栏图文错位 ---------- */

.page-products .sec-lead,
.page-products .col-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 3.5vw, 2.5rem);
  align-items: start;
}

@media (min-width: 900px) {
  .page-products .sec-lead { grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); }
  .page-products .col-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1.12fr); }
}

/* ---------- 01 双入口 ---------- */

.page-products .route-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: clamp(1.5rem, 3vw, 2.2rem) 0 0;
  background: var(--line-soft);
  border: 1px solid var(--line);
}

@media (min-width: 760px) {
  .page-products .route-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

.page-products .route-card {
  padding: clamp(1.2rem, 2.6vw, 1.85rem);
  background: var(--c-ink-2);
  transition: background var(--dur) var(--ease);
}

.page-products .route-card:hover { background: var(--c-slate); }

.page-products .route-card .eyebrow {
  margin: 0 0 0.55rem;
  font-family: var(--f-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  color: var(--c-cyan);
}

.page-products .route-card h3 {
  margin: 0 0 0.65rem;
  font-family: var(--f-head);
  font-size: var(--fs-20);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--c-paper);
}

.page-products .route-card p {
  margin: 0;
  font-size: var(--fs-15);
  line-height: 1.76;
  color: var(--c-mist);
}

/* 点阵密度图 */

.page-products .dot-block { margin-top: clamp(1.5rem, 3vw, 2.2rem); }

.page-products .dot-map {
  position: relative;
  height: 138px;
  overflow: hidden;
  border: 1px solid var(--line);
  background-color: var(--c-ink-2);
  background-image: radial-gradient(circle, rgba(159, 182, 196, 0.4) 1.1px, transparent 1.4px);
  background-size: 20px 20px;
  background-position: 9px 9px;
}

.page-products .dm-glow {
  position: absolute;
  width: 168px;
  height: 168px;
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.page-products .dm-a { left: 30%; top: 60%; background: radial-gradient(circle, rgba(0, 229, 255, 0.3), transparent 68%); }
.page-products .dm-b { left: 64%; top: 32%; background: radial-gradient(circle, rgba(0, 229, 255, 0.2), transparent 70%); }
.page-products .dm-c { left: 84%; top: 70%; background: radial-gradient(circle, rgba(122, 231, 199, 0.18), transparent 70%); }

.page-products .dot-note {
  margin: 0.65rem 0 0;
  font-size: var(--fs-13);
  line-height: 1.7;
  color: var(--c-mist);
}

/* ---------- 02 查询形态 ---------- */

.page-products .query-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: clamp(1.25rem, 3vw, 1.85rem) 0 clamp(1.1rem, 2.6vw, 1.6rem);
  background: var(--line-soft);
  border: 1px solid var(--line);
}

@media (min-width: 760px) {
  .page-products .query-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

.page-products .query-card {
  padding: clamp(1.15rem, 2.4vw, 1.75rem);
  background: var(--c-slate);
  border-left: 2px solid transparent;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-products .query-card:hover {
  border-left-color: var(--c-cyan);
  background: var(--c-ink-2);
}

.page-products .query-tag {
  margin: 0 0 0.6rem;
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  color: var(--c-cyan);
}

.page-products .query-card h3 {
  margin: 0 0 0.65rem;
  font-family: var(--f-head);
  font-size: var(--fs-20);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--c-paper);
}

.page-products .query-card p {
  margin: 0;
  font-size: var(--fs-15);
  line-height: 1.76;
  color: var(--c-mist);
}

/* ---------- 03 作者索引 ---------- */

.page-products .author-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: clamp(1.5rem, 3vw, 2.2rem) 0 0;
  padding: 0;
  list-style: none;
  background: var(--line-soft);
  border: 1px solid var(--line);
}

@media (min-width: 700px) {
  .page-products .author-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

.page-products .author-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.25rem 0.7rem;
  padding: 0.9rem 1rem 1rem;
  background: var(--c-ink-2);
  transition: background var(--dur) var(--ease);
}

.page-products .author-list li:hover { background: var(--c-indigo); }

.page-products .author-list .mono {
  font-size: var(--fs-13);
  letter-spacing: 0.1em;
  color: var(--c-amber);
}

.page-products .author-list b {
  font-size: var(--fs-15);
  font-weight: 600;
  color: var(--c-paper);
}

.page-products .author-list em {
  display: block;
  width: 100%;
  font-family: var(--f-serif);
  font-style: normal;
  font-size: var(--fs-13);
  line-height: 1.7;
  color: var(--c-mist);
}

/* ---------- 04 资料分类 ---------- */

.page-products .plate-wide { margin: clamp(1.5rem, 3vw, 2.2rem) 0 0; }

.page-products .dl-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.7rem;
  margin-top: clamp(1.25rem, 3vw, 1.75rem);
}

@media (min-width: 700px) {
  .page-products .dl-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

.page-products .dl-card {
  background: var(--c-ink-2);
  border: 1px solid var(--line);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-products .dl-card:hover { border-color: var(--line-cyan); }

.page-products .dl-card[open] {
  border-color: var(--c-cyan);
  background: var(--c-slate);
}

.page-products .dl-card summary {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.9rem 1rem;
  cursor: pointer;
  list-style: none;
}

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

.page-products .dl-no {
  flex: none;
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  color: var(--c-cyan);
}

.page-products .dl-name {
  flex: 1;
  min-width: 0;
  font-size: var(--fs-17);
  color: var(--c-paper);
}

.page-products .dl-caret {
  flex: none;
  width: 9px;
  height: 9px;
  border-right: 1px solid var(--c-mist);
  border-bottom: 1px solid var(--c-mist);
  transform: rotate(45deg) translate(-1px, -1px);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-products .dl-card[open] .dl-caret {
  transform: rotate(-135deg) translate(-1px, -1px);
  border-color: var(--c-cyan);
}

.page-products .dl-files {
  margin: 0;
  padding: 0 1rem 0.9rem;
  list-style: none;
  border-top: 1px solid var(--line-soft);
}

.page-products .dl-files li {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: var(--fs-15);
}

.page-products .dl-files li:last-child { border-bottom: 0; }

.page-products .dl-file {
  flex: 1;
  min-width: 0;
  line-height: 1.6;
  color: var(--c-paper);
}

.page-products .dl-badge {
  flex: none;
  padding: 0.12rem 0.36rem;
  border: 1px solid var(--line);
  font-size: 0.625rem;
  letter-spacing: 0.12em;
  color: var(--c-mist);
}

.page-products .dl-size {
  flex: none;
  min-width: 4.4em;
  text-align: right;
  font-size: var(--fs-13);
  color: var(--c-mist);
}

/* ---------- 05 格式与节奏 ---------- */

.page-products .fmt-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line);
}

@media (min-width: 760px) {
  .page-products .fmt-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

.page-products .fmt-card {
  padding: clamp(1.2rem, 2.6vw, 1.85rem);
  background: var(--c-ink-2);
}

.page-products .fmt-tag {
  display: inline-block;
  margin: 0 0 0.75rem;
  padding-bottom: 0.45rem;
  border-bottom: 1px solid var(--line-cyan);
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  color: var(--c-cyan);
}

.page-products .fmt-card h3 {
  margin: 0 0 0.65rem;
  font-family: var(--f-head);
  font-size: var(--fs-20);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--c-paper);
}

.page-products .fmt-card p {
  margin: 0;
  font-size: var(--fs-15);
  line-height: 1.78;
  color: var(--c-mist);
}

.page-products .rhythm {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line);
  border-top: 0;
}

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

.page-products .rhythm-item {
  padding: clamp(1.1rem, 2.4vw, 1.6rem);
  background: var(--c-ink-2);
}

.page-products .rhythm-item .mono {
  display: block;
  margin-bottom: 0.5rem;
  font-size: var(--fs-20);
  letter-spacing: 0.02em;
  color: var(--c-cyan);
}

.page-products .rhythm-item p {
  margin: 0;
  font-size: var(--fs-15);
  line-height: 1.76;
  color: var(--c-mist);
}

/* ---------- 06 场景建议 ---------- */

.page-products .scene-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1rem, 2.5vw, 1.7rem);
}

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

.page-products .scene-card {
  padding: clamp(1.2rem, 2.6vw, 1.85rem);
  background: var(--c-ink-2);
  border: 1px solid var(--line);
  border-top: 2px solid var(--c-cyan);
  transition: background var(--dur) var(--ease);
}

.page-products .scene-card:hover { background: var(--c-slate); }

.page-products .scene-no {
  margin: 0 0 0.5rem;
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  color: var(--c-mist);
}

.page-products .scene-card h3 {
  margin: 0 0 1rem;
  font-family: var(--f-head);
  font-size: var(--fs-20);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--c-paper);
}

.page-products .scene-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.page-products .scene-steps li {
  position: relative;
  counter-increment: step;
  padding-left: 1.9rem;
  margin-bottom: 0.7rem;
  font-size: var(--fs-15);
  line-height: 1.72;
  color: var(--c-mist);
}

.page-products .scene-steps li:last-child { margin-bottom: 0; }

.page-products .scene-steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.12em;
  font-family: var(--f-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.04em;
  color: var(--c-cyan);
}

.page-products .scene-steps a {
  color: var(--c-paper);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-products .scene-steps a:hover {
  color: var(--c-cyan);
  border-bottom-color: var(--c-cyan);
}

/* ---------- 收尾 ---------- */

.page-products .cat-outro {
  position: relative;
  margin-top: clamp(2.5rem, 6vw, 4.25rem);
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, var(--c-ink) 0%, var(--c-ink-2) 100%);
  overflow: hidden;
}

.page-products .plate-bleed { margin: 0; }

.page-products .plate-bleed .plate-media {
  border: 0;
  border-bottom: 1px solid var(--line);
  background: transparent;
}

.page-products .plate-bleed .plate-media img {
  width: 100%;
  height: 200px;
  opacity: 0.6;
  filter: saturate(0.9) brightness(0.95);
  -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 45%, transparent 100%);
  mask-image: linear-gradient(180deg, transparent 0%, #000 45%, transparent 100%);
}

@media (min-width: 900px) {
  .page-products .plate-bleed .plate-media img { height: 240px; }
}

.page-products .outro-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem 2.5rem;
  padding-block: clamp(1.9rem, 4.5vw, 3rem) clamp(2.75rem, 6vw, 4.25rem);
}

.page-products .outro-inner .serif-note {
  max-width: 40ch;
  margin: 0;
  font-family: var(--f-serif);
  font-size: var(--fs-15);
  line-height: 1.82;
  color: var(--c-mist);
}

.page-products .outro-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

/* ---------- 窄屏兜底 ---------- */

@media (max-width: 600px) {
  .page-products .dl-files li { flex-wrap: wrap; gap: 0.3rem 0.55rem; }
  .page-products .dl-size { min-width: 0; }
  .page-products .plate-media { border-left: 0; border-right: 0; }
}

@media (max-width: 420px) {
  .page-products .cat-toc { grid-template-columns: minmax(0, 1fr); }
}