/* ============ 方案与报价 /projects/ ============ */
.page-products {
  --pr-hair: rgba(28, 61, 92, .95);
  --pr-card: rgba(15, 42, 68, .72);
  padding-bottom: clamp(48px, 8vw, 110px);
}

.page-products .wrap.pr-crumb {
  padding-top: 18px;
}

/* ---------- 首屏 ---------- */
.page-products .pr-hero {
  padding: clamp(18px, 3vw, 30px) 0 clamp(34px, 5vw, 58px);
}

.page-products .pr-hero__frame {
  position: relative;
  padding: clamp(26px, 4vw, 52px);
  border: 1px solid var(--c-line);
  background:
    radial-gradient(120% 150% at 100% 0%, rgba(53, 214, 227, .13), transparent 58%),
    linear-gradient(158deg, rgba(15, 42, 68, .96), rgba(8, 25, 43, .96));
  overflow: hidden;
}

.page-products .pr-hero__frame::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 12px;
  background-image: repeating-linear-gradient(90deg, rgba(28, 61, 92, .95) 0 1px, transparent 1px 26px);
  pointer-events: none;
}

.page-products .pr-hero__frame::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 92px;
  background: var(--c-cyan);
}

.page-products .pr-hero__eyebrow {
  margin: 8px 0 18px;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--c-cyan-soft);
}

.page-products .pr-hero__title {
  margin: 0 0 20px;
  max-width: 20em;
  font-size: clamp(30px, 5.4vw, 54px);
  line-height: 1.12;
  letter-spacing: -.02em;
  color: var(--c-paper);
  font-weight: 800;
}

.page-products .pr-hero__lead {
  margin: 0 0 30px;
  max-width: 42em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--c-muted);
}

.page-products .pr-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0 0 30px;
  border: 1px solid var(--c-line);
  background: var(--c-line);
}

.page-products .pr-fact {
  padding: 14px 16px;
  background: rgba(8, 25, 43, .78);
}

.page-products .pr-fact dt {
  margin-bottom: 8px;
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--c-dim);
}

.page-products .pr-fact dd {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  color: var(--c-paper);
  font-variant-numeric: tabular-nums;
}

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

/* ---------- 分栏骨架 ---------- */
.page-products .pr-shell {
  display: grid;
  gap: 26px;
}

.page-products .pr-rail {
  min-width: 0;
}

.page-products .rail-index__title {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--c-dim);
}

.page-products .rail-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 4px;
  overflow-x: auto;
}

.page-products .rail-index__item {
  flex: 0 0 auto;
}

.page-products .rail-index__link {
  display: block;
  padding: 8px 12px;
  font-size: 13px;
  white-space: nowrap;
  color: var(--c-muted);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease), background .18s var(--ease);
}

.page-products .rail-index__link:hover {
  color: var(--c-paper);
  background: rgba(28, 61, 92, .4);
}

.page-products .rail-index__link[aria-current="location"] {
  color: var(--c-cyan);
  border-bottom-color: var(--c-cyan);
  background: rgba(53, 214, 227, .08);
}

/* ---------- 通用章节 ---------- */
.page-products .pr-section {
  margin-top: clamp(52px, 7vw, 92px);
  scroll-margin-top: 118px;
}

.page-products .section__head {
  margin-bottom: clamp(22px, 3vw, 34px);
  max-width: 46em;
}

.page-products .section__lead {
  margin-top: 12px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-muted);
}

.page-products .section__title {
  font-size: clamp(23px, 3.2vw, 34px);
  letter-spacing: -.02em;
  line-height: 1.18;
}

/* ---------- 图片容器 ---------- */
.page-products .figure {
  margin: 0;
}

.page-products .figure__frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--c-line);
  background: rgba(15, 42, 68, .55);
}

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

.page-products .figure__caption {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-dim);
}

.page-products .pr-figure {
  margin-bottom: clamp(22px, 3vw, 32px);
}

/* ---------- 档位主表 ---------- */
.page-products .pr-tiers__scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--c-line);
  background: var(--c-mist);
}

.page-products .pr-tiers {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  font-size: 15px;
  color: var(--c-ink);
}

.page-products .pr-tiers__caption {
  padding: 14px 20px;
  text-align: left;
  font-size: 13px;
  letter-spacing: .08em;
  color: #47657E;
  background: rgba(255, 255, 255, .6);
  border-bottom: 1px solid rgba(15, 42, 68, .14);
}

.page-products .pr-tiers th,
.page-products .pr-tiers td {
  padding: 15px 18px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid rgba(15, 42, 68, .14);
  line-height: 1.65;
}

.page-products .pr-tiers thead th {
  background: var(--c-mid);
  color: var(--c-paper);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .06em;
  white-space: nowrap;
  border-bottom-color: var(--c-line);
}

.page-products .pr-tiers tbody th {
  font-weight: 700;
  white-space: nowrap;
  color: var(--c-ink);
}

.page-products .pr-tiers tbody tr {
  transition: background .16s var(--ease);
}

.page-products .pr-tiers tbody tr:hover {
  background: #DCE5ED;
}

.page-products .pr-tiers tbody tr:last-child th,
.page-products .pr-tiers tbody tr:last-child td {
  border-bottom: none;
}

.page-products .pr-price {
  display: inline-block;
  padding: 3px 10px;
  background: var(--c-gold);
  color: #1A1206;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.page-products .pr-price--up {
  background: var(--c-gold-soft);
}

.page-products .pr-tiers tbody tr.pr-tiers__row--up th,
.page-products .pr-tiers tbody tr.pr-tiers__row--up td {
  background: rgba(227, 178, 79, .14);
}

/* ---------- 紧邻表格的升级条目 ---------- */
.page-products .pr-uprow {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 18px;
  margin-top: 14px;
  padding: 20px 22px;
  border: 1px solid rgba(227, 178, 79, .45);
  border-left: 3px solid var(--c-gold);
  background: rgba(227, 178, 79, .08);
}

.page-products .pr-uprow__price {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  color: var(--c-gold-soft);
  font-variant-numeric: tabular-nums;
}

.page-products .pr-uprow__desc {
  flex: 1 1 240px;
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-muted);
}

/* ---------- 升级版明细 ---------- */
.page-products .pr-upgrade {
  display: grid;
  gap: 28px;
}

.page-products .pr-upgrade__sub {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .16em;
  font-weight: 600;
  color: var(--c-dim);
}

.page-products .pr-modlist {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
  display: grid;
  gap: 1px;
  border: 1px solid var(--c-line);
  background: var(--c-line);
}

.page-products .pr-modlist li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 16px 18px;
  background: rgba(15, 42, 68, .88);
  transition: background .18s var(--ease);
}

.page-products .pr-modlist li:hover {
  background: rgba(28, 61, 92, .95);
}

.page-products .pr-modlist__k {
  padding-top: 3px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--c-cyan);
}

.page-products .pr-modlist h4 {
  margin: 0 0 6px;
  font-size: 15px;
  color: var(--c-paper);
}

.page-products .pr-modlist p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-muted);
}

.page-products .pr-addons {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-products .pr-addons li {
  padding: 7px 13px;
  font-size: 13px;
  color: var(--c-cyan-soft);
  border: 1px solid rgba(53, 214, 227, .35);
  background: rgba(53, 214, 227, .07);
}

.page-products .pr-upgrade__valid {
  margin: 0;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--c-gold);
}

/* ---------- 场景 ---------- */
.page-products .pr-scenes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  border: 1px solid var(--c-line);
  background: var(--c-line);
}

.page-products .pr-scene {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px 16px;
  padding: 20px;
  background: var(--pr-card);
  transition: background .18s var(--ease);
}

.page-products .pr-scene:hover {
  background: rgba(28, 61, 92, .92);
}

.page-products .pr-scene__no {
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--c-cyan);
  padding-top: 2px;
}

.page-products .pr-scene__body {
  min-width: 0;
}

.page-products .pr-scene__title {
  margin: 0 0 8px;
  font-size: 17px;
  color: var(--c-paper);
}

.page-products .pr-scene__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-muted);
}

.page-products .pr-scene .tag {
  grid-column: 2;
  justify-self: start;
}

/* ---------- 设备适配 ---------- */
.page-products .pr-device {
  display: grid;
  gap: 24px;
  margin-top: 32px;
}

.page-products .pr-device__title {
  margin: 0 0 14px;
  font-size: 18px;
  color: var(--c-paper);
}

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

.page-products .pr-device__list li {
  position: relative;
  padding-left: 22px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-muted);
}

.page-products .pr-device__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 10px;
  height: 2px;
  background: var(--c-cyan);
}

.page-products .pr-device__list .mono {
  color: var(--c-cyan-soft);
}

.page-products .pr-device__note {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-muted);
}

.page-products .pr-device__note:last-child {
  margin-bottom: 0;
}

/* ---------- 交付流程 ---------- */
.page-products .pr-flow {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-products .pr-flow__step {
  position: relative;
  padding: 20px 22px;
  border: 1px solid var(--c-line);
  border-left: 2px solid var(--c-cyan);
  background: var(--pr-card);
  transition: background .2s var(--ease), border-left-color .2s var(--ease);
}

.page-products .pr-flow__step:hover {
  background: rgba(28, 61, 92, .9);
  border-left-color: var(--c-flare);
}

.page-products .pr-flow__no {
  display: block;
  margin-bottom: 8px;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--c-cyan);
}

.page-products .pr-flow__title {
  margin: 0 0 6px;
  font-size: 17px;
  color: var(--c-paper);
}

.page-products .pr-flow__dur {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--c-gold);
}

.page-products .pr-flow__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-muted);
}

/* ---------- 确认清单 ---------- */
.page-products .pr-checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  border: 1px solid var(--c-line);
  background: var(--c-line);
}

.page-products .pr-checklist__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 18px 20px;
  background: rgba(15, 42, 68, .8);
  transition: background .18s var(--ease);
}

.page-products .pr-checklist__item:hover {
  background: rgba(28, 61, 92, .95);
}

.page-products .pr-checklist__box {
  position: relative;
  width: 16px;
  height: 16px;
  margin-top: 4px;
  border: 1px solid var(--c-cyan);
  flex: none;
}

.page-products .pr-checklist__box::after {
  content: "";
  position: absolute;
  inset: 3px;
  background: transparent;
  transition: background .18s var(--ease);
}

.page-products .pr-checklist__item:hover .pr-checklist__box::after {
  background: var(--c-cyan);
}

.page-products .pr-checklist__item h3 {
  margin: 0 0 6px;
  font-size: 15px;
  color: var(--c-paper);
}

.page-products .pr-checklist__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-muted);
}

/* ---------- 升级路径 ---------- */
.page-products .pr-path {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .pr-path__step {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px 18px;
  align-items: baseline;
  padding: 16px 20px;
  border: 1px solid var(--c-line);
  border-left: 2px solid var(--c-gold);
  background: linear-gradient(96deg, rgba(15, 42, 68, .95), rgba(15, 42, 68, .5));
}

.page-products .pr-path__title {
  margin: 0 0 6px;
  font-size: 15px;
  color: var(--c-paper);
}

.page-products .pr-path__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-muted);
}

.page-products .pr-path__diff {
  font-size: 14px;
  font-weight: 700;
  color: var(--c-gold);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.page-products .pr-path__figure {
  margin-bottom: 24px;
}

.page-products .pr-path__pair {
  padding: 22px;
  border: 1px solid var(--c-line);
  background: rgba(53, 214, 227, .05);
}

.page-products .pr-path__pair-title {
  margin: 0 0 10px;
  font-size: 16px;
  color: var(--c-cyan-soft);
}

.page-products .pr-path__pair p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-muted);
}

/* ---------- 下一步 ---------- */
.page-products .pr-next__panel {
  position: relative;
  padding: clamp(26px, 4vw, 46px);
  border: 1px solid var(--c-line);
  background:
    radial-gradient(120% 170% at 0% 0%, rgba(227, 178, 79, .15), transparent 62%),
    linear-gradient(152deg, rgba(15, 42, 68, .96), rgba(8, 25, 43, .96));
  overflow: hidden;
}

.page-products .pr-next__panel::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 120px;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--c-gold));
}

.page-products .pr-next__title {
  margin: 0 0 14px;
  font-size: clamp(22px, 3vw, 32px);
  letter-spacing: -.02em;
  color: var(--c-paper);
}

.page-products .pr-next__lead {
  margin: 0 0 26px;
  max-width: 44em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-muted);
}

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

/* ---------- 窄屏收尾 ---------- */
@media (max-width: 719px) {
  .page-products .pr-uprow {
    padding: 18px;
  }

  .page-products .pr-path__step {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-products .pr-path__diff {
    justify-self: start;
  }

  .page-products .pr-hero__actions .btn,
  .page-products .pr-next__actions .btn {
    flex: 1 1 100%;
    text-align: center;
  }
}

/* ---------- 中等屏幕：并排能力 ---------- */
@media (min-width: 760px) {
  .page-products .pr-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-products .pr-scene {
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: start;
  }

  .page-products .pr-scene .tag {
    grid-column: 3;
    justify-self: end;
    white-space: nowrap;
  }

  .page-products .pr-flow__step:nth-child(1) { margin-right: 20%; }
  .page-products .pr-flow__step:nth-child(2) { margin-right: 13%; }
  .page-products .pr-flow__step:nth-child(3) { margin-right: 6%; }
  .page-products .pr-flow__step:nth-child(4) { margin-right: 0; }

  .page-products .pr-path__step:nth-child(1) { margin-right: 16%; }
  .page-products .pr-path__step:nth-child(2) { margin-right: 8%; }
}

/* ---------- 宽屏：左右分屏 + 分支并排 ---------- */
@media (min-width: 960px) {
  .page-products .pr-shell {
    grid-template-columns: minmax(180px, 30%) minmax(0, 1fr);
    gap: clamp(32px, 4vw, 62px);
    align-items: start;
  }

  .page-products .pr-rail {
    position: sticky;
    top: 116px;
  }

  .page-products .rail-index__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
  }

  .page-products .rail-index__link {
    border-bottom: none;
    border-left: 2px solid transparent;
    padding: 10px 14px;
  }

  .page-products .rail-index__link[aria-current="location"] {
    border-bottom-color: transparent;
    border-left-color: var(--c-cyan);
  }

  .page-products .pr-upgrade {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: clamp(28px, 3.4vw, 48px);
    align-items: start;
  }

  .page-products .pr-upgrade__figure {
    position: sticky;
    top: 132px;
  }

  .page-products .pr-device {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: center;
    gap: clamp(28px, 3.4vw, 46px);
  }

  .page-products .pr-path__step:nth-child(1) { margin-right: 24%; }
  .page-products .pr-path__step:nth-child(2) { margin-right: 12%; }
  .page-products .pr-path__step:nth-child(3) { margin-right: 0; }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-products .pr-tiers tbody tr,
  .page-products .pr-modlist li,
  .page-products .pr-scene,
  .page-products .pr-flow__step,
  .page-products .pr-checklist__item,
  .page-products .pr-checklist__box::after,
  .page-products .rail-index__link {
    transition: none;
  }
}