.page-products {
  --feat-line-soft: rgba(29, 74, 102, .42);
  --feat-goldline: rgba(201, 162, 39, .38);
  --feat-shadow: 0 1px 0 rgba(201, 162, 39, .14);
}

.page-products .crumbs {
  padding: 20px 0 4px;
  font-size: var(--step--1);
  color: var(--text-mute);
}

.page-products .crumbs a {
  color: var(--text-dim);
  transition: color var(--dur) var(--ease);
}

.page-products .crumbs a:hover,
.page-products .crumbs a:focus-visible {
  color: var(--gold-light);
}

.page-products .crumbs__sep {
  margin: 0 8px;
  color: var(--brass);
}

/* ---------- 封面 ---------- */

.page-products .feat-hero {
  position: relative;
  padding: clamp(28px, 5vw, 60px) 0 clamp(26px, 4vw, 48px);
  border-bottom: 1px solid var(--line);
}

.page-products .feat-hero::before {
  content: "";
  position: absolute;
  right: 0;
  top: 18px;
  width: 190px;
  height: 190px;
  pointer-events: none;
  display: none;
  background:
    radial-gradient(circle at 50% 50%, transparent 58%, var(--feat-line-soft) 58%, var(--feat-line-soft) 59%, transparent 59%),
    radial-gradient(circle at 50% 50%, transparent 33%, var(--feat-line-soft) 33%, var(--feat-line-soft) 34%, transparent 34%),
    linear-gradient(var(--feat-goldline), var(--feat-goldline)) 50% 50% / 1px 100% no-repeat,
    linear-gradient(var(--feat-goldline), var(--feat-goldline)) 50% 50% / 100% 1px no-repeat;
  opacity: .7;
}

.page-products .feat-hero h1 {
  margin: 14px 0 0;
  max-width: 18em;
  font-family: var(--font-display);
  font-size: clamp(28px, 6vw, 56px);
  line-height: 1.14;
  letter-spacing: -.02em;
  color: var(--text);
}

.page-products .feat-hero__lede {
  max-width: 34em;
  margin: 18px 0 0;
  font-size: var(--step-0);
  line-height: 1.9;
  color: var(--text-dim);
}

.page-products .feat-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-products .feat-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-products .feat-hero__facts li {
  padding: 14px 16px 4px 0;
  font-size: var(--step--1);
  color: var(--text-mute);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-products .feat-hero__facts li:nth-child(2n) {
  border-right: 0;
  padding-left: 16px;
}

.page-products .feat-hero__facts .num {
  display: block;
  margin-bottom: 2px;
  font-family: var(--font-mono);
  font-size: var(--step-2);
  line-height: 1.1;
  color: var(--gold);
}

/* ---------- 章节骨架 ---------- */

.page-products .chapter {
  position: relative;
  margin-top: clamp(48px, 7vw, 88px);
}

.page-products .chapter__num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: .2em;
  color: var(--gold);
}

.page-products .chapter__num::after {
  content: "";
  display: block;
  width: 40px;
  height: 1px;
  margin-top: 10px;
  background: var(--gold);
}

.page-products .chapter > h2 {
  margin: 14px 0 0;
  max-width: 24em;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.6vw, 32px);
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-products .chapter__lede {
  margin: 12px 0 0;
  max-width: 36em;
  font-size: var(--step-0);
  line-height: 1.9;
  color: var(--text-dim);
}

.page-products .grid-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--feat-line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--feat-line-soft) 1px, transparent 1px);
  background-size: 72px 72px;
  opacity: .32;
}

.page-products .grid-bg > * {
  position: relative;
  z-index: 1;
}

/* ---------- 档案卡矩阵 ---------- */

.page-products .cap-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: 30px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .cap-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 216px;
  padding: 28px 22px 22px;
  background: var(--ink-800);
  transition: background var(--dur) var(--ease);
}

.page-products .cap-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  transition: width var(--dur) var(--ease);
}

.page-products .cap-card:hover,
.page-products .cap-card:focus-within {
  background: var(--ink-700);
}

.page-products .cap-card:hover::before,
.page-products .cap-card:focus-within::before {
  width: 100%;
}

.page-products .cap-card__tag {
  position: absolute;
  top: 0;
  right: 0;
  padding: 5px 11px;
  font-family: var(--font-mono);
  font-size: var(--step--2);
  letter-spacing: .14em;
  color: var(--gold);
  background: rgba(201, 162, 39, .08);
  border-left: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-products .cap-card__title {
  margin: 6px 0 0;
  font-family: var(--font-display);
  font-size: var(--step-1);
  font-weight: 400;
  color: var(--text);
}

.page-products .cap-card__body {
  margin: 12px 0 0;
  max-width: 30em;
  font-size: var(--step--1);
  line-height: 1.85;
  color: var(--text-dim);
}

.page-products .cap-card__hint {
  margin: auto 0 0;
  padding-top: 16px;
  font-size: var(--step--1);
}

.page-products .cap-card__hint a {
  color: var(--gold);
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-products .cap-card__hint a:hover,
.page-products .cap-card__hint a:focus-visible {
  color: var(--gold-light);
  border-bottom-color: var(--gold-light);
}

.page-products .cap-card__num {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: var(--step--2);
  letter-spacing: .12em;
  color: var(--brass);
}

/* ---------- 双栏 ---------- */

.page-products .split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 40px);
  margin-top: 28px;
}

.page-products .split__text.prose {
  max-width: 40em;
}

.page-products .split__text p {
  margin: 0 0 16px;
  font-size: var(--step-0);
  line-height: 1.9;
  color: var(--text-dim);
}

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

/* ---------- 表格 ---------- */

.page-products .visually-plain {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.page-products .table-wrap {
  margin-top: clamp(24px, 4vw, 40px);
  overflow-x: auto;
  border: 1px solid var(--line);
}

.page-products .data-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: var(--step--1);
}

.page-products .data-table th {
  padding: 13px 16px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: var(--step--2);
  font-weight: 400;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--gold);
  background: var(--ink-800);
  border-bottom: 1px solid var(--line-strong);
}

.page-products .data-table td {
  padding: 15px 16px;
  vertical-align: top;
  line-height: 1.8;
  color: var(--text-dim);
  border-bottom: 1px solid var(--line);
}

.page-products .data-table tbody tr:nth-child(even) {
  background: var(--ink-700);
}

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

.page-products .data-table .num {
  font-family: var(--font-mono);
  font-size: var(--step-0);
  color: var(--mist);
  white-space: nowrap;
}

/* ---------- 对比视图 ---------- */

.page-products .view-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: clamp(26px, 4vw, 42px);
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .view-item {
  padding: 22px 20px;
  background: var(--ink-800);
  border-left: 2px solid transparent;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-products .view-item:hover {
  background: var(--ink-700);
  border-left-color: var(--gold);
}

.page-products .view-item__key {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--step-2);
  line-height: 1;
  color: var(--gold);
}

.page-products .view-item h3 {
  margin: 12px 0 8px;
  font-family: var(--font-body);
  font-size: var(--step-0);
  font-weight: 600;
  color: var(--text);
}

.page-products .view-item p {
  margin: 0;
  font-size: var(--step--1);
  line-height: 1.85;
  color: var(--text-mute);
}

/* ---------- 资料包 ---------- */

.page-products .pack-media {
  margin: clamp(26px, 4vw, 42px) 0 0;
}

.page-products .pack-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 14px;
  margin-top: 26px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.page-products .pack-head p {
  flex: 1 1 320px;
  margin: 0;
  max-width: 42em;
  font-size: var(--step-0);
  line-height: 1.9;
  color: var(--text-dim);
}

.page-products .ver-chip {
  flex: 0 0 auto;
  display: inline-block;
  padding: 4px 12px;
  font-family: var(--font-mono);
  font-size: var(--step-1);
  line-height: 1.3;
  color: var(--ink-900);
  background: var(--coral);
  letter-spacing: .04em;
}

.page-products .dl-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .dl-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.page-products .dl-row__name {
  flex: 1 1 240px;
  font-family: var(--font-mono);
  font-size: var(--step-0);
  color: var(--mist);
}

.page-products .dl-row__meta {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: var(--step--2);
  letter-spacing: .1em;
  color: var(--text-mute);
}

.page-products .dl-btn {
  flex: 0 0 auto;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-products .dl-btn:hover,
.page-products .dl-btn:focus-visible,
.page-products .dl-btn:active {
  background: var(--jade);
  border-color: var(--jade);
  color: var(--ink-900);
}

/* ---------- 折叠面板 ---------- */

.page-products .panels {
  margin-top: clamp(26px, 4vw, 40px);
  border-top: 1px solid var(--line);
}

.page-products .panel {
  border-bottom: 1px solid var(--line);
}

.page-products .panel__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 18px 0;
  cursor: pointer;
  font-size: var(--step-0);
  color: var(--text);
  list-style: none;
  transition: color var(--dur) var(--ease);
}

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

.page-products .panel__head:hover,
.page-products .panel__head:focus-visible {
  color: var(--gold-light);
}

.page-products .panel__index {
  font-family: var(--font-mono);
  font-size: var(--step--2);
  letter-spacing: .12em;
  color: var(--gold);
}

.page-products .panel__body {
  padding: 0 0 22px 34px;
}

.page-products .panel__body p {
  margin: 0;
  max-width: 40em;
  font-size: var(--step--1);
  line-height: 1.9;
  color: var(--text-dim);
}

.page-products .panel__body a {
  color: var(--gold);
  border-bottom: 1px solid var(--feat-goldline);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-products .panel__body a:hover,
.page-products .panel__body a:focus-visible {
  color: var(--gold-light);
  border-bottom-color: var(--gold-light);
}

/* ---------- 步骤 ---------- */

.page-products .steps {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .steps li {
  display: flex;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.page-products .steps li:first-child {
  padding-top: 0;
}

.page-products .steps__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: var(--step-1);
  line-height: 1.2;
  color: var(--gold);
}

.page-products .steps h3 {
  margin: 0 0 8px;
  font-family: var(--font-body);
  font-size: var(--step-0);
  font-weight: 600;
  color: var(--text);
}

.page-products .steps p {
  margin: 0;
  max-width: 34em;
  font-size: var(--step--1);
  line-height: 1.85;
  color: var(--text-dim);
}

/* ---------- 上手路径 ---------- */

.page-products .paths {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: 30px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .path {
  position: relative;
  padding: 26px 22px 22px;
  background: var(--ink-800);
}

.page-products .path__tag {
  display: inline-block;
  margin-bottom: 16px;
  padding: 3px 10px;
  font-family: var(--font-mono);
  font-size: var(--step--2);
  letter-spacing: .14em;
  color: var(--jade);
  border: 1px solid rgba(47, 158, 143, .5);
}

.page-products .path__steps {
  margin: 0;
  padding: 0 0 0 20px;
  counter-reset: path;
  list-style: none;
}

.page-products .path__steps li {
  position: relative;
  padding: 0 0 14px;
  font-size: var(--step--1);
  line-height: 1.85;
  color: var(--text-dim);
}

.page-products .path__steps li::before {
  counter-increment: path;
  content: counter(path, decimal-leading-zero);
  position: absolute;
  left: -20px;
  font-family: var(--font-mono);
  font-size: var(--step--2);
  color: var(--brass);
}

.page-products .path__steps li:last-child {
  padding-bottom: 0;
}

.page-products .path__steps a {
  color: var(--gold);
  border-bottom: 1px solid var(--feat-goldline);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-products .path__steps a:hover,
.page-products .path__steps a:focus-visible {
  color: var(--gold-light);
  border-bottom-color: var(--gold-light);
}

.page-products .quick-media {
  margin: clamp(26px, 4vw, 44px) 0 0;
}

/* ---------- 结尾带 ---------- */

.page-products .outro {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin: clamp(52px, 8vw, 96px) 0 clamp(40px, 6vw, 72px);
  padding: clamp(26px, 4vw, 40px) clamp(22px, 3vw, 36px);
  background: var(--ink-800);
  border-left: 2px solid var(--gold);
  box-shadow: var(--feat-shadow);
}

.page-products .outro__text h2 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: var(--step-1);
  font-weight: 400;
  color: var(--text);
}

.page-products .outro__text p {
  margin: 0;
  max-width: 38em;
  font-size: var(--step--1);
  line-height: 1.9;
  color: var(--text-dim);
}

.page-products .outro__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 图片 ---------- */

.page-products .media__frame {
  overflow: hidden;
  border: 1px solid var(--line);
}

.page-products .media__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  transition: border-color var(--dur) var(--ease);
}

.page-products .media:hover .media__frame {
  border-color: var(--gold-light);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-products .cap-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

  .page-products .feat-hero__facts li {
    border-right: 1px solid var(--line);
    padding: 14px 16px 4px 0;
  }

  .page-products .feat-hero__facts li:nth-child(2n) {
    padding-left: 0;
  }

  .page-products .feat-hero__facts li:not(:first-child) {
    padding-left: 16px;
  }

  .page-products .feat-hero__facts li:last-child {
    border-right: 0;
  }
}

@media (min-width: 768px) {
  .page-products .feat-hero::before {
    display: block;
  }

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

@media (min-width: 960px) {
  .page-products .split {
    grid-template-columns: 1.05fr .95fr;
    align-items: start;
  }

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

  .page-products .split--flip .split__media {
    order: 2;
  }

  .page-products .cap-card {
    padding: 32px 28px 24px;
  }

  .page-products .outro {
    flex-wrap: nowrap;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .cap-card,
  .page-products .cap-card::before,
  .page-products .view-item,
  .page-products .dl-btn,
  .page-products .media__frame,
  .page-products .crumbs a {
    transition: none;
  }
}