.page-products {
  --prod-cut: 20px;
  --prod-gap: clamp(18px, 3vw, 32px);
  padding-bottom: clamp(40px, 8vw, 96px);
}

/* ---------- 面包屑 ---------- */
.page-products .crumb {
  padding-top: clamp(18px, 3vw, 30px);
}

.page-products .crumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-products .crumb li:not(:last-child)::after {
  content: "/";
  margin-left: 10px;
  color: var(--line);
}

.page-products .crumb a {
  color: var(--mist);
  text-decoration: none;
}

.page-products .crumb a:hover {
  color: var(--neon);
}

/* ---------- 首屏 ---------- */
.page-products .prod-hero {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  padding-top: clamp(26px, 5vw, 52px);
}

.page-products .prod-hero h1 {
  margin: 12px 0 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(30px, 5.4vw, 54px);
  line-height: 1.1;
  letter-spacing: .02em;
  color: var(--paper);
}

.page-products .prod-hero .lede {
  margin: 16px 0 0;
  max-width: 62ch;
  color: var(--mist);
}

.page-products .prod-hero__fees {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(112px, 1fr));
  gap: 1px;
  margin: 0;
  padding: 1px;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .prod-fee {
  background: var(--coal);
  padding: 14px 16px 16px;
}

.page-products .prod-fee__num {
  display: block;
  font-family: var(--font-num);
  font-size: clamp(22px, 3.4vw, 30px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--neon);
  font-variant-numeric: tabular-nums;
}

.page-products .prod-fee--hot .prod-fee__num {
  color: var(--amber);
}

.page-products .prod-fee__unit {
  margin-left: 3px;
  font-size: 12px;
  font-weight: 400;
  color: var(--mist);
}

.page-products .prod-fee__label {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--mist);
}

@media (min-width: 960px) {
  .page-products .prod-hero {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: end;
  }
}

/* ---------- 区块通用 ---------- */
.page-products .section {
  padding-top: clamp(44px, 7vw, 84px);
}

.page-products .section--tight {
  padding-top: clamp(32px, 5vw, 56px);
}

.page-products .section__head h2,
.page-products .prod-split__body h2,
.page-products .next-step h2 {
  margin: 10px 0 0;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: clamp(23px, 3.4vw, 34px);
  line-height: 1.18;
  letter-spacing: .02em;
  color: var(--paper);
}

.page-products .section__head .lede {
  margin: 14px 0 0;
  max-width: 68ch;
  color: var(--mist);
}

.page-products .prod-split__body p {
  margin: 14px 0 0;
  max-width: 62ch;
  color: var(--mist);
}

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

/* ---------- 分栏 ---------- */
.page-products .prod-split {
  display: grid;
  gap: var(--prod-gap);
}

@media (min-width: 900px) {
  .page-products .prod-split {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-products .prod-split--reverse {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.85fr);
  }
}

/* ---------- 安装步骤带 ---------- */
.page-products .step-band {
  display: grid;
  gap: 10px;
  margin: var(--prod-gap) 0 0;
  padding: 0;
  list-style: none;
}

.page-products .step-band__item {
  position: relative;
}

.page-products .step-band__fold {
  height: 100%;
  background: var(--panel);
}

.page-products .step-band__fold .fold__summary {
  align-items: baseline;
  font-family: var(--font-head);
  font-size: 15px;
  letter-spacing: .04em;
}

.page-products .step-band__idx {
  margin-right: 8px;
  color: var(--neon);
  font-size: 12px;
}

.page-products .step-band__fold .fold__body {
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

@media (min-width: 780px) {
  .page-products .step-band {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    align-items: start;
  }

  .page-products .step-band__item:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 20px;
    right: -9px;
    width: 16px;
    height: 1px;
    background: var(--line);
    transform: rotate(-30deg);
  }
}

/* ---------- 价格行 ---------- */
.page-products .fee-board {
  display: grid;
  gap: var(--prod-gap);
  margin-top: var(--prod-gap);
}

.page-products .price-row {
  display: grid;
  gap: 8px;
  padding: 18px 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--amber);
  transition: border-color 180ms var(--ease), background-color 180ms var(--ease);
}

.page-products .price-row + .price-row {
  margin-top: 12px;
}

.page-products .price-row:hover {
  background: #14352c;
  border-color: var(--amber);
}

.page-products .price-row__name {
  margin: 0;
  font-family: var(--font-head);
  font-size: 17px;
  letter-spacing: .04em;
  color: var(--paper);
}

.page-products .price-row__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-products .price-row__amt {
  margin: 0;
  font-family: var(--font-num);
  font-size: clamp(24px, 3.6vw, 34px);
  font-weight: 700;
  color: var(--amber);
  font-variant-numeric: tabular-nums;
}

.page-products .fee-board__note,
.page-products .check-note,
.page-products .scope-note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-products .fee-board__note {
  padding-left: 14px;
  border-left: 2px solid var(--line);
}

@media (min-width: 640px) {
  .page-products .price-row {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    column-gap: 26px;
  }

  .page-products .price-row__desc {
    grid-column: 1 / 2;
  }
}

@media (min-width: 900px) {
  .page-products .fee-board {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: center;
  }
}

/* ---------- 档位面板 ---------- */
.page-products .plan-layout {
  display: grid;
  gap: var(--prod-gap);
  margin-top: var(--prod-gap);
}

.page-products .plan-rack {
  display: grid;
  gap: 14px;
}

.page-products .plan {
  position: relative;
  padding: 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - var(--prod-cut)) 0, 100% var(--prod-cut), 100% 100%, var(--prod-cut) 100%, 0 calc(100% - var(--prod-cut)));
  transition: border-color 180ms var(--ease);
}

.page-products .plan:hover {
  border-color: var(--neon);
}

.page-products .plan--season {
  background: #14352c;
  border-color: rgba(31, 224, 164, .45);
}

.page-products .plan__tag {
  margin: 0;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--neon-2);
}

.page-products .plan__price {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  margin: 12px 0 0;
  padding: 6px 16px 6px 12px;
  background: var(--amber);
  color: var(--coal);
  clip-path: polygon(0 0, 100% 0, calc(100% - 12px) 100%, 0 100%);
}

.page-products .plan__num {
  font-family: var(--font-num);
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 700;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.page-products .plan__unit {
  font-size: 12px;
  font-weight: 600;
}

.page-products .plan__list {
  display: grid;
  gap: 8px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  font-size: 14px;
  color: var(--paper);
}

.page-products .plan__list li {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 8px;
  line-height: 1.6;
}

.page-products .plan__list li::before {
  content: "✓";
  font-family: var(--font-num);
  color: var(--neon);
}

.page-products .plan__list li.is-off {
  color: #6f8580;
}

.page-products .plan__list li.is-off::before {
  content: "—";
  color: var(--line);
}

.page-products .plan__for {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

@media (min-width: 800px) {
  .page-products .plan-rack {
    grid-template-columns: 1fr 1.12fr 1fr;
    align-items: start;
  }

  .page-products .plan--season {
    transform: translateY(-16px);
  }
}

/* ---------- 费用速查侧栏 ---------- */
.page-products .fee-rail {
  padding: 18px;
  background: var(--coal);
  border: 1px solid var(--line);
}

.page-products .fee-rail__title {
  margin: 0 0 12px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--neon);
}

.page-products .fee-rail__row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 0;
  font-size: 13px;
  color: var(--mist);
  border-bottom: 1px dashed var(--line);
}

.page-products .fee-rail__row b {
  font-weight: 600;
  color: var(--paper);
}

.page-products .fee-rail__tip {
  margin: 14px 0 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--mist);
}

@media (min-width: 1080px) {
  .page-products .plan-layout {
    grid-template-columns: minmax(0, 1fr) 232px;
    align-items: start;
  }

  .page-products .fee-rail {
    position: sticky;
    top: 88px;
  }
}

/* ---------- 档位数据范围 ---------- */
.page-products .scope-layout {
  display: grid;
  gap: var(--prod-gap);
  margin-top: var(--prod-gap);
}

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

.page-products .scope__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 1px;
  background: var(--line);
}

.page-products .scope .tab {
  flex: 1 1 150px;
  padding: 14px 16px;
  border: 0;
  background: var(--coal);
  color: var(--mist);
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: .06em;
  cursor: pointer;
  transition: color 180ms var(--ease), background-color 180ms var(--ease);
}

.page-products .scope .tab:hover {
  color: var(--paper);
}

.page-products .scope .tab[aria-selected="true"] {
  background: var(--panel);
  color: var(--neon);
  box-shadow: inset 0 -2px 0 var(--neon);
}

.page-products .scope__panel {
  display: grid;
  gap: 14px;
  padding: clamp(18px, 3vw, 28px);
}

.page-products .scope__panels > [hidden] {
  display: none;
}

.page-products .scope__row {
  display: grid;
  gap: 6px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--line);
}

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

.page-products .scope__k {
  margin: 0;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--amber-2);
}

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

@media (min-width: 1020px) {
  .page-products .scope-layout {
    grid-template-columns: minmax(0, 1fr) 320px;
    align-items: start;
  }
}

/* ---------- 周期说明 ---------- */
.page-products .cycle-list {
  display: grid;
  gap: 1px;
  margin: var(--prod-gap) 0 0;
  padding: 1px;
  list-style: none;
  background: var(--line);
}

.page-products .cycle-list__item {
  background: var(--coal);
  padding: 16px 18px;
}

.page-products .cycle-list__k {
  margin: 0 0 6px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--amber);
}

.page-products .cycle-list__item p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 检查清单 ---------- */
.page-products .check-layout {
  display: grid;
  gap: var(--prod-gap);
  margin-top: var(--prod-gap);
}

.page-products .check-list {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 1px;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .check-list__item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  padding: 15px 18px;
  background: var(--panel);
  transition: background-color 180ms var(--ease);
}

.page-products .check-list__item:hover {
  background: #14352c;
}

.page-products .check-list__idx {
  font-family: var(--font-num);
  font-size: 13px;
  color: var(--neon);
}

.page-products .check-list__t {
  margin: 0;
  font-size: 15px;
  color: var(--paper);
}

.page-products .check-list__d {
  margin: 5px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

@media (min-width: 900px) {
  .page-products .check-layout {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    align-items: center;
  }
}

/* ---------- 收尾 ---------- */
.page-products .next-step {
  padding: clamp(22px, 4vw, 38px);
}

.page-products .next-step p {
  margin: 14px 0 0;
  max-width: 66ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

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

.page-products .next-step__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}