/* ============================================
   功能与版本页 · page-products
   作用域内所有选择器均以 .page-products 限定
   ============================================ */

.page-products .pd-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 5vw, 58px) 0 clamp(26px, 4vw, 52px);
}

.page-products .pd-hero::before {
  content: "";
  position: absolute;
  top: -24%;
  right: -14%;
  width: min(620px, 82vw);
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 50% 50%, rgba(212, 175, 55, 0.16), transparent 68%);
  pointer-events: none;
}

.page-products .pd-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--gold) 0%, rgba(212, 175, 55, 0.14) 40%, transparent 100%);
}

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

.page-products .pd-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 46px);
}

.page-products .pd-hero__kicker {
  margin: 0 0 14px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-products .pd-hero__title {
  margin: 0 0 20px;
  font-size: clamp(31px, 6vw, 60px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  font-weight: 900;
  color: var(--white);
  overflow-wrap: break-word;
}

.page-products .pd-hero__lead {
  margin: 0 0 26px;
  max-width: 62ch;
  font-size: 17px;
  line-height: 1.85;
  color: var(--text);
}

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

.page-products .pd-hero__panel {
  border-top: 3px solid var(--gold);
  background: linear-gradient(180deg, rgba(212, 175, 55, 0.09), rgba(18, 22, 31, 0.72) 64%);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  border-left: 1px solid var(--line);
  padding: 22px 22px 20px;
}

.page-products .pd-stats {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 20px;
}

.page-products .pd-stats__item dt {
  margin-bottom: 6px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-products .pd-stats__item dd {
  margin: 0;
  font-family: var(--font-num);
  font-size: 30px;
  font-weight: 600;
  line-height: 1;
  color: var(--white);
}

.page-products .pd-stats__item dd small {
  margin-left: 3px;
  font-size: 14px;
  color: var(--muted);
}

.page-products .pd-hero__panel-note {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 章节头部 ---------- */

.page-products .pd-head {
  margin-bottom: clamp(20px, 3vw, 34px);
  padding-left: 18px;
  border-left: 3px solid var(--gold);
}

.page-products .pd-head__num {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-num);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-products .pd-head__title {
  margin: 0 0 8px;
  font-size: clamp(22px, 3.4vw, 34px);
  line-height: 1.26;
  letter-spacing: -0.01em;
  font-weight: 800;
  color: var(--white);
}

.page-products .pd-head__note {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 01 版本状态条 ---------- */

.page-products .pd-status__bar {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .pd-status__bar::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), var(--red) 58%, transparent 100%);
  z-index: 1;
}

.page-products .pd-status__cell {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 22px 20px 22px;
  background: var(--panel);
}

.page-products .pd-status__label {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-products .pd-status__v {
  font-family: var(--font-num);
  font-size: 26px;
  font-weight: 600;
  line-height: 1.1;
  color: var(--gold);
}

.page-products .pd-status__sub {
  font-size: 13px;
  line-height: 1.65;
  color: var(--text);
}

/* ---------- 02 功能模块矩阵 ---------- */

.page-products .pd-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}

.page-products .pd-mod {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 24px 20px 22px;
  background: var(--panel);
  border: 1px solid var(--line);
}

.page-products .pd-mod::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 48px;
  height: 3px;
  background: var(--gold);
}

.page-products .pd-mod--rule,
.page-products .pd-mod--rec {
  background: linear-gradient(180deg, var(--raise) 0%, var(--panel) 48%);
}

.page-products .pd-mod__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.page-products .pd-mod__idx {
  font-family: var(--font-num);
  font-size: 34px;
  font-weight: 600;
  line-height: 1;
  color: var(--gold);
}

.page-products .pd-mod__title {
  margin: 0;
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-products .pd-mod__text {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text);
}

.page-products .pd-mod__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-products .pd-mod__facts li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

.page-products .pd-fact__k {
  flex: 0 0 auto;
  color: var(--muted);
}

.page-products .pd-fact__v {
  text-align: right;
  font-weight: 600;
  color: var(--white);
}

/* ---------- 图片 ---------- */

.page-products .pd-fig {
  margin: 4px 0 0;
}

.page-products .pd-fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line);
  background: var(--night);
  object-fit: cover;
}

.page-products .pd-fig figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 03 阅读步骤折叠组 ---------- */

.page-products .pd-flow__list {
  display: grid;
  gap: 12px;
}

.page-products .pd-flow__list .fold {
  background: var(--panel);
  border: 1px solid var(--line);
}

.page-products .fold__inner p {
  margin: 0;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text);
}

/* ---------- 04 版本对比 ---------- */

.page-products .pd-vers__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
  margin-bottom: clamp(22px, 3vw, 34px);
}

.page-products .pd-vers__col {
  padding: 20px 20px 22px;
  background: var(--panel);
  border: 1px solid var(--line);
}

.page-products .pd-vers__col--now {
  border-color: rgba(212, 175, 55, 0.55);
  background: linear-gradient(180deg, rgba(212, 175, 55, 0.13), var(--panel) 62%);
  box-shadow: var(--shadow-press);
}

.page-products .pd-vers__tag {
  display: inline-block;
  margin-bottom: 12px;
  padding: 2px 10px;
  font-family: var(--font-num);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--gold);
  border: 1px solid rgba(212, 175, 55, 0.42);
}

.page-products .pd-vers__col--now .pd-vers__tag {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--night);
}

.page-products .pd-vers__name {
  margin: 0 0 14px;
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
}

.page-products .pd-vers__col dl {
  margin: 0;
  display: grid;
  gap: 12px;
}

.page-products .pd-vers__row dt {
  margin-bottom: 3px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-products .pd-vers__row dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--text);
}

/* ---------- 05 适用场景 ---------- */

.page-products .pd-fit__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}

.page-products .pd-fit__card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 22px 20px 24px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-top: 3px solid var(--gold);
}

.page-products .pd-fit__card:nth-child(2) {
  border-top-color: var(--red);
}

.page-products .pd-fit__card:nth-child(3) {
  border-top-color: var(--cyan);
}

.page-products .pd-fit__card h3 {
  margin: 0;
  font-size: 19px;
  font-weight: 800;
  color: var(--white);
}

.page-products .pd-fit__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text);
}

.page-products .pd-link {
  align-self: flex-start;
  margin-top: auto;
  padding-bottom: 2px;
  font-size: 14px;
  font-weight: 600;
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(212, 175, 55, 0.42);
  transition: color var(--dur-state) var(--ease), border-color var(--dur-state) var(--ease);
}

.page-products .pd-link:hover,
.page-products .pd-link:focus-visible {
  color: var(--white);
  border-bottom-color: var(--white);
}

/* ---------- 结尾行动区 ---------- */

.page-products .pd-cta__box {
  display: grid;
  gap: 22px;
  padding: clamp(22px, 4vw, 40px);
  background:
    linear-gradient(120deg, rgba(212, 175, 55, 0.14), rgba(230, 57, 70, 0.10) 56%, transparent 100%),
    var(--panel);
  border: 1px solid var(--line);
}

.page-products .pd-cta__title {
  margin: 0 0 10px;
  font-size: clamp(21px, 2.8vw, 28px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-products .pd-cta__text {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text);
}

.page-products .pd-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-content: center;
}

/* ============================================
   媒体查询
   ============================================ */

@media (max-width: 479px) {
  .page-products .pd-hero__actions .btn,
  .page-products .pd-cta__actions .btn {
    flex: 1 1 100%;
    text-align: center;
  }

  .page-products .pd-stats {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 760px) {
  .page-products .pd-status__bar {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 880px) {
  .page-products .pd-fit__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-products .pd-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    align-items: start;
  }

  .page-products .pd-mod--rule {
    grid-column: span 7;
  }

  .page-products .pd-mod--cat {
    grid-column: span 5;
  }

  .page-products .pd-mod--pad {
    grid-column: span 5;
  }

  .page-products .pd-mod--rec {
    grid-column: span 7;
  }
}

@media (min-width: 960px) {
  .page-products .pd-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }

  .page-products .pd-hero__panel {
    margin-bottom: 6px;
  }
}

@media (min-width: 1040px) {
  .page-products .pd-vers__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .pd-cta__box {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pd-link {
    transition: none;
  }
}