/* ==========================================================
   方案与下载中心 /download/
   作用域：.page-products
   ========================================================== */

.page-products {
  --pp-grid-line: rgba(26, 20, 16, 0.07);
  --pp-card-line: rgba(26, 20, 16, 0.13);
  --pp-shadow: 0 1px 0 var(--paper-200), 0 14px 30px -24px rgba(6, 35, 58, 0.6);
  background-color: var(--paper-100);
  color: var(--ink-900);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-products .pp-hero__coord,
.page-products .pp-dir__head .u-coord,
.page-products .pp-dl__code {
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--teal-600);
}

.page-products .section-head {
  margin-bottom: 14px;
}

.page-products .pp-filter__intro,
.page-products .pp-downloads__intro,
.page-products .pp-timeline__intro,
.page-products .pp-combos__intro {
  font-size: var(--fs-16);
  line-height: 1.85;
  color: #4a3f33;
  max-width: 66ch;
  margin: 0 0 8px;
}

.page-products .pp-filter__intro a,
.page-products .pp-downloads__intro a,
.page-products .pp-dl__cta-line a,
.page-products .pp-standard__body a {
  color: var(--orange-700);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-products .pp-standard__body a {
  color: var(--cyan-200);
}

/* ---------------- 首屏 ---------------- */

.page-products .pp-hero {
  border-bottom: 1px solid var(--pp-card-line);
  background-color: var(--paper-100);
  background-image:
    linear-gradient(var(--pp-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--pp-grid-line) 1px, transparent 1px);
  background-size: 56px 56px;
  padding: clamp(26px, 6vw, 58px) 0 clamp(24px, 4vw, 42px);
}

.page-products .pp-hero__grid {
  display: grid;
  gap: clamp(22px, 4vw, 38px);
}

.page-products .pp-hero__coord {
  margin: 0 0 14px;
}

.page-products .pp-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.75rem, 5.4vw, 3.5rem);
  line-height: 1.14;
  letter-spacing: -0.01em;
  margin: 0 0 18px;
  color: var(--sea-900);
  max-width: 20ch;
}

.page-products .pp-hero__lede {
  font-size: var(--fs-18);
  line-height: 1.82;
  max-width: 60ch;
  color: #33291f;
  margin: 0;
}

.page-products .pp-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--pp-card-line);
  border: 1px solid var(--pp-card-line);
  margin: 0;
}

.page-products .pp-stat {
  background: var(--paper-100);
  padding: 14px 16px 15px;
}

.page-products .pp-stat dt {
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  color: #6a5c4d;
  margin-bottom: 5px;
}

.page-products .pp-stat dd {
  margin: 0;
  font-size: var(--fs-22);
  line-height: 1.25;
  color: var(--sea-900);
}

/* ---------------- 筛选 ---------------- */

.page-products .pp-filter {
  padding: clamp(32px, 5vw, 58px) 0 clamp(18px, 3vw, 28px);
}

.page-products .pp-chips {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-products .pp-chip {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 13px 8px 16px;
  border: 1px solid var(--line-cyan);
  border-radius: 999px;
  background: rgba(168, 237, 244, 0.18);
  color: var(--sea-900);
  font-size: var(--fs-14);
  text-decoration: none;
  transition: background var(--dur) var(--ease),
    color var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}

.page-products .pp-chip:hover,
.page-products .pp-chip:focus-visible {
  background: var(--sea-900);
  border-color: var(--sea-900);
  color: var(--paper-100);
}

.page-products .pp-chip__n {
  font-size: var(--fs-12);
  padding: 1px 7px;
  border-radius: 999px;
  background: var(--cyan-500);
  color: var(--sea-900);
}

/* ---------------- 方向区块 ---------------- */

.page-products .pp-dir {
  padding: clamp(26px, 4vw, 46px) 0;
  border-top: 1px solid var(--line-paper);
}

.page-products .pp-dir__grid {
  display: grid;
  gap: clamp(18px, 3vw, 28px);
}

.page-products .pp-dir__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-28);
  line-height: 1.18;
  margin: 8px 0 8px;
  color: var(--sea-900);
}

.page-products .pp-dir__count {
  margin: 0 0 12px;
  font-size: var(--fs-14);
  letter-spacing: 0.04em;
  color: var(--teal-600);
}

.page-products .pp-dir__scene {
  margin: 0;
  padding-left: 12px;
  border-left: 2px solid var(--cyan-500);
  font-size: var(--fs-14);
  line-height: 1.82;
  color: #55483a;
  max-width: 42ch;
}

.page-products .pp-cards {
  display: grid;
  gap: 16px;
}

.page-products .pp-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: 20px 22px 22px;
  background: #fffdf8;
  border: 1px solid var(--pp-card-line);
  box-shadow: var(--pp-shadow);
}

.page-products .pp-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 46px;
  background: var(--cyan-500);
}

.page-products .pp-card--narrow::before {
  background: var(--gold-500);
}

.page-products .pp-card__index {
  margin: 0;
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  color: var(--teal-600);
}

.page-products .pp-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-18);
  line-height: 1.42;
  color: var(--sea-900);
}

.page-products .pp-card__desc {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.82;
  color: #4a3f33;
}

.page-products .pp-card__tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: auto 0 0;
  padding: 6px 0 0;
}

/* ---------------- 方案标准（深色） ---------------- */

.page-products .pp-standard {
  position: relative;
  background: var(--sea-900);
  padding: clamp(34px, 5vw, 62px) 0;
  overflow: hidden;
}

.page-products .pp-standard::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(168, 237, 244, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(168, 237, 244, 0.07) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.page-products .pp-standard__grid {
  position: relative;
  display: grid;
  gap: clamp(22px, 4vw, 40px);
}

.page-products .pp-standard .u-coord {
  color: var(--cyan-500);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
}

.page-products .pp-standard h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.45rem, 3.6vw, 2.375rem);
  line-height: 1.26;
  margin: 10px 0 18px;
  color: var(--paper-100);
  max-width: 22ch;
}

.page-products .pp-standard p {
  margin: 0 0 14px;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: #d8e6ec;
  max-width: 58ch;
}

.page-products .pp-standard__list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .pp-standard__list li {
  position: relative;
  padding-left: 22px;
  font-size: var(--fs-14);
  line-height: 1.72;
  color: var(--cyan-200);
}

.page-products .pp-standard__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 11px;
  height: 1px;
  background: var(--cyan-500);
}

.page-products .pp-standard__fig {
  margin: 0;
}

.page-products .pp-standard__fig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--line-sea);
  background: linear-gradient(140deg, var(--sea-700), var(--sea-900));
}

.page-products .pp-standard__fig figcaption {
  margin-top: 10px;
  padding-left: 10px;
  border-left: 2px solid var(--gold-500);
  font-size: var(--fs-12);
  line-height: 1.72;
  color: rgba(168, 237, 244, 0.78);
}

/* ---------------- 下载区 ---------------- */

.page-products .pp-downloads {
  padding: clamp(34px, 5vw, 62px) 0;
  background: var(--paper-200);
}

.page-products .pp-dl__banner {
  margin: 0 0 clamp(24px, 4vw, 40px);
}

.page-products .pp-dl__banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid var(--pp-card-line);
}

.page-products .pp-dl__body {
  display: grid;
  gap: clamp(18px, 3vw, 30px);
  margin-top: 22px;
}

.page-products .pp-dl__aside {
  margin: 0;
}

.page-products .pp-dl__aside img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--pp-card-line);
}

.page-products .pp-dl__rail {
  list-style: none;
  margin: 0;
  padding: 0 0 10px;
  display: flex;
  gap: 14px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-products .pp-dl__item {
  flex: 0 0 min(282px, 78vw);
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px 18px 18px;
  background: var(--paper-100);
  border: 1px solid var(--pp-card-line);
  border-top: 3px solid var(--teal-600);
  transition: transform var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

.page-products .pp-dl__item--brief {
  border-top-color: var(--gold-500);
}

.page-products .pp-dl__item--route {
  border-top-color: var(--orange-500);
}

.page-products .pp-dl__item:hover {
  transform: translateY(-4px);
  border-color: var(--cyan-500);
  box-shadow: 0 16px 28px -22px rgba(6, 35, 58, 0.7);
}

.page-products .pp-dl__code {
  margin: 0;
}

.page-products .pp-dl__name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-16);
  line-height: 1.45;
  color: var(--sea-900);
}

.page-products .pp-dl__meta {
  margin: 0;
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  color: var(--sea-700);
}

.page-products .pp-dl__note {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.78;
  color: #4a3f33;
}

.page-products .pp-dl__update {
  margin: auto 0 0;
  padding-top: 8px;
  border-top: 1px dashed var(--pp-card-line);
  font-size: var(--fs-12);
  color: #6a5c4d;
}

.page-products .pp-dl__cta-line {
  margin: 20px 0 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: #4a3f33;
}

/* ---------------- 时间线 ---------------- */

.page-products .pp-timeline {
  padding: clamp(34px, 5vw, 62px) 0;
  background: var(--paper-100);
}

.page-products .pp-tl__map {
  margin: 0 0 clamp(24px, 4vw, 38px);
}

.page-products .pp-tl__map img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 7 / 4;
  object-fit: cover;
  border: 1px solid var(--line-cyan);
}

.page-products .pp-steps {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .pp-step details {
  background: #fffdf8;
  border: 1px solid var(--pp-card-line);
}

.page-products .pp-step summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 12px;
  align-items: center;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
}

.page-products .pp-step summary::-webkit-details-marker {
  display: none;
}

.page-products .pp-step__num {
  font-size: var(--fs-12);
  padding: 3px 8px;
  background: var(--sea-900);
  color: var(--paper-100);
  letter-spacing: 0.08em;
  justify-self: start;
}

.page-products .pp-step__label {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-16);
  color: var(--sea-900);
  line-height: 1.4;
}

.page-products .pp-step__time {
  grid-column: 2;
  justify-self: start;
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  color: var(--orange-700);
  white-space: nowrap;
}

.page-products .pp-step details[open] summary {
  background: rgba(168, 237, 244, 0.22);
  border-bottom: 1px solid var(--pp-card-line);
}

.page-products .pp-step__body {
  padding: 14px 16px 16px;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: #4a3f33;
}

.page-products .pp-step__body p {
  margin: 0;
  max-width: 62ch;
}

/* ---------------- 推荐组合 ---------------- */

.page-products .pp-combos {
  padding: clamp(34px, 5vw, 62px) 0;
  background: var(--paper-200);
}

.page-products .pp-combos__grid {
  margin-top: 22px;
}

.page-products .pp-combo {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 22px 18px;
  background: var(--paper-100);
  border: 1px solid var(--pp-card-line);
  overflow: hidden;
}

.page-products .pp-combo::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 36px;
  height: 36px;
  background: linear-gradient(225deg, var(--cyan-500) 0 50%, rgba(22, 194, 213, 0.12) 50%);
}

.page-products .pp-combo__mix {
  margin: 0;
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--teal-600);
}

.page-products .pp-combo__name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-22);
  line-height: 1.3;
  color: var(--sea-900);
}

.page-products .pp-combo__desc {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.82;
  color: #4a3f33;
}

.page-products .pp-combo__fit {
  margin: auto 0 0;
  padding-top: 10px;
  border-top: 1px dashed var(--pp-card-line);
  font-size: var(--fs-12);
  line-height: 1.72;
  color: #6a5c4d;
}

/* ---------------- 结尾行动区 ---------------- */

.page-products .pp-cta {
  background: var(--sea-900);
  color: var(--paper-100);
  padding: clamp(32px, 5vw, 56px) 0;
}

.page-products .pp-cta__inner {
  display: grid;
  gap: 22px;
}

.page-products .pp-cta .u-coord {
  color: var(--cyan-500);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
}

.page-products .pp-cta h2 {
  margin: 10px 0 12px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.4rem, 3.2vw, 1.75rem);
  line-height: 1.3;
  color: var(--paper-100);
  max-width: 24ch;
}

.page-products .pp-cta p {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.82;
  color: #d8e6ec;
  max-width: 56ch;
}

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

/* ---------------- 响应式 ---------------- */

@media (min-width: 620px) {
  .page-products .pp-step summary {
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 14px;
  }

  .page-products .pp-step__time {
    grid-column: auto;
    justify-self: end;
  }
}

@media (min-width: 760px) {
  .page-products .pp-cards {
    grid-template-columns: 7fr 5fr;
    gap: 20px;
  }

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

@media (min-width: 900px) {
  .page-products .pp-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: end;
  }

  .page-products .pp-dir__grid {
    grid-template-columns: 246px minmax(0, 1fr);
    gap: 34px;
    align-items: start;
  }

  .page-products .pp-standard__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
    gap: 44px;
  }

  .page-products .pp-dl__body {
    grid-template-columns: 264px minmax(0, 1fr);
    align-items: start;
  }

  .page-products .pp-cta__inner {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: center;
    gap: 36px;
  }

  .page-products .pp-cta__actions {
    justify-content: flex-end;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pp-chip,
  .page-products .pp-dl__item,
  .page-products .pp-step details {
    transition: none;
  }

  .page-products .pp-dl__item:hover {
    transform: none;
  }
}