.page-products {
  --pt-rail: var(--aqua);
  --pt-gauge: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 30px);
  --pt-gauge-v: repeating-linear-gradient(180deg, var(--line) 0 1px, transparent 1px 26px);
}

/* ---------- 面包屑 ---------- */
.page-products .breadcrumbs {
  padding-top: 22px;
  padding-bottom: 4px;
}
.page-products .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 13px;
  color: var(--mist);
}
.page-products .breadcrumb-list li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(159, 181, 172, 0.5);
}
.page-products .breadcrumb-link {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 180ms ease, border-color 180ms ease;
}
.page-products .breadcrumb-link:hover {
  color: var(--aqua);
  border-bottom-color: var(--aqua);
}
.page-products .breadcrumb-current {
  color: var(--paper);
}

/* ---------- 首屏框景 ---------- */
.page-products .pt-hero {
  padding-top: 16px;
}
.page-products .pt-frame {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  padding: 34px 20px 30px;
  background:
    radial-gradient(130% 100% at 104% -6%, rgba(47, 227, 154, 0.11), transparent 58%),
    radial-gradient(90% 70% at -10% 110%, rgba(255, 154, 60, 0.08), transparent 62%),
    linear-gradient(178deg, var(--deep), var(--ink) 86%);
  overflow: hidden;
}
.page-products .pt-frame::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 10px;
  background: var(--pt-gauge);
  opacity: 0.75;
}
.page-products .pt-frame::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--mint), transparent 78%);
  opacity: 0.85;
}
.page-products .pt-title {
  margin: 14px 0 0;
  font-size: clamp(1.9rem, 7vw, 3.5rem);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--paper);
  max-width: 22em;
}
.page-products .pt-lead {
  margin: 18px 0 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.75;
  color: var(--mist);
}
.page-products .pt-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}
.page-products .pt-fact {
  flex: 1 1 128px;
  min-width: 0;
  border-left: 3px solid var(--mint);
  border-radius: 0 var(--radius-s) var(--radius-s) 0;
  background: rgba(23, 51, 43, 0.62);
  padding: 10px 14px;
}
.page-products .pt-fact .stat-value {
  display: block;
  font-size: 1.5rem;
  line-height: 1.1;
  color: var(--mint);
}
.page-products .pt-fact .stat-value em {
  font-style: normal;
  font-size: 0.72em;
  margin-left: 2px;
  color: var(--aqua);
}
.page-products .pt-fact .stat-label {
  display: block;
  margin-top: 4px;
  font-size: 12.5px;
  color: var(--mist);
  letter-spacing: 0.02em;
}
.page-products .pt-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

/* ---------- 面板能力 ---------- */
.page-products .pt-panel-grid {
  display: grid;
  gap: 16px;
}
.page-products .pt-stack {
  display: grid;
  gap: 12px;
}
.page-products .pt-stack .card {
  --rail: var(--aqua);
}
.page-products .pt-stack .card--mint {
  --rail: var(--mint);
}
.page-products .pt-stack .card--sand {
  --rail: var(--sand);
}
.page-products .pt-stack .card--amber {
  --rail: var(--amber);
}
.page-products .pt-stack .card-body {
  margin: 6px 0 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--mist);
}
.page-products .pt-figure {
  margin: 0;
  border-radius: var(--radius-m);
  overflow: hidden;
}
.page-products .pt-figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.page-products .pt-figure .media-caption {
  display: block;
  padding: 10px 14px;
  font-size: 12.5px;
  color: var(--mist);
  background: rgba(10, 18, 16, 0.72);
  border-top: 1px solid var(--line-soft);
}

/* ---------- 权益对照 ---------- */
.page-products .pt-switch {
  display: inline-flex;
  gap: 6px;
  padding: 5px;
  border-radius: var(--pill);
  border: 1px solid var(--line);
  background: rgba(23, 51, 43, 0.5);
  margin-bottom: 20px;
}
.page-products .pt-tab {
  appearance: none;
  border: 0;
  cursor: pointer;
  font: inherit;
  font-size: 14px;
  letter-spacing: 0.02em;
  padding: 9px 20px;
  border-radius: var(--pill);
  color: var(--mist);
  background: transparent;
  transition: background 180ms ease, color 180ms ease, box-shadow 180ms ease;
}
.page-products .pt-tab:hover {
  color: var(--paper);
}
.page-products .pt-tab.is-on {
  color: var(--ink);
  background: var(--mint);
  box-shadow: 0 0 0 1px rgba(47, 227, 154, 0.4);
}
.page-products .pt-tier + .pt-tier {
  margin-top: 16px;
}
.page-products .pt-tier-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.page-products .pt-tier-title {
  margin: 0;
  font-size: 1.06rem;
  font-weight: 700;
  color: var(--paper);
}
.page-products .pt-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  border-radius: var(--radius-m);
  background: var(--panel);
  border: 1px solid var(--line-soft);
  overflow: hidden;
}
.page-products .pt-list--pro li::before {
  background: var(--mint);
}
.page-products .pt-list--small {
  background: rgba(23, 51, 43, 0.5);
  margin-top: 20px;
}
.page-products .pt-list li {
  position: relative;
  padding: 15px 16px 15px 22px;
  border-top: 1px solid var(--line-soft);
}
.page-products .pt-list li:first-child {
  border-top: 0;
}
.page-products .pt-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 13px;
  bottom: 13px;
  width: 3px;
  border-radius: var(--pill);
  background: var(--pt-rail);
}
.page-products .pt-li-key {
  display: block;
  font-size: 14.5px;
  font-weight: 700;
  color: var(--paper);
  letter-spacing: 0.01em;
}
.page-products .pt-li-val {
  display: block;
  margin-top: 5px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
  max-width: 46em;
}

/* ---------- 客户端 rail ---------- */
.page-products .pt-rail {
  margin-top: 16px;
  position: relative;
  padding-bottom: 6px;
}
.page-products .pt-rail::before,
.page-products .pt-rail::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 6px;
  width: 34px;
  pointer-events: none;
  z-index: 2;
}
.page-products .pt-rail::before {
  left: 0;
  background: linear-gradient(90deg, var(--ink), transparent);
}
.page-products .pt-rail::after {
  right: 0;
  background: linear-gradient(270deg, var(--ink), transparent);
}
.page-products .pt-client {
  flex: 0 0 76%;
  max-width: 320px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 18px;
  border-radius: var(--radius-m);
  border: 1px solid var(--line-soft);
  background:
    linear-gradient(160deg, rgba(23, 51, 43, 0.9), rgba(10, 18, 16, 0.86));
  border-left: 3px solid var(--aqua);
}
.page-products .pt-client:nth-child(1) { border-left-color: var(--mint); }
.page-products .pt-client:nth-child(2) { border-left-color: var(--aqua); }
.page-products .pt-client:nth-child(3) { border-left-color: var(--sand); }
.page-products .pt-client:nth-child(4) { border-left-color: var(--amber); }
.page-products .pt-client-index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mist);
}
.page-products .pt-client-name {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--paper);
}
.page-products .pt-client-body {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--mist);
  flex: 1;
}
.page-products .pt-client .tag {
  align-self: flex-start;
  margin-top: 4px;
}

/* ---------- 费用与分档 ---------- */
.page-products .pt-billing {
  display: grid;
  gap: 16px;
}
.page-products .pt-price-block {
  padding: 22px 20px;
  border-radius: var(--radius-m);
  background: var(--panel);
  border: 1px solid var(--line-soft);
  border-top: 3px solid var(--mint);
}
.page-products .pt-price-block--amber {
  border-top-color: var(--amber);
}
.page-products .pt-price-label {
  margin: 0;
  font-size: 12.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
  font-family: var(--font-mono);
}
.page-products .pt-price-sub {
  margin: 10px 0 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
  max-width: 34em;
}
.page-products .pt-price-row {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  margin-top: 16px;
}
.page-products .pt-price {
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.page-products .pt-price .stat-value {
  font-size: clamp(2.2rem, 8vw, 3rem);
  color: var(--mint);
}
.page-products .pt-price-unit {
  font-size: 13px;
  color: var(--mist);
  font-family: var(--font-mono);
}
.page-products .pt-price-note {
  margin: 18px 0 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--mist);
  max-width: 34em;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
}
.page-products .pt-scale {
  display: grid;
  gap: 10px;
}
.page-products .pt-scale-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  padding: 14px 16px;
  border-radius: var(--radius-s);
  background: rgba(10, 18, 16, 0.55);
  border-left: 3px solid var(--amber);
  position: relative;
}
.page-products .pt-scale-item::after {
  content: "";
  position: absolute;
  right: 14px;
  top: 0;
  bottom: 0;
  width: 44px;
  background: var(--pt-gauge-v);
  opacity: 0.35;
  pointer-events: none;
}
.page-products .pt-scale-key {
  flex: 1 1 120px;
  font-size: 14px;
  font-weight: 700;
  color: var(--paper);
}
.page-products .pt-scale-item .stat-value {
  font-size: 1.55rem;
  color: var(--amber);
}
.page-products .pt-figure--scale {
  max-width: 420px;
  justify-self: center;
  width: 100%;
}

/* ---------- 小屏专区 ---------- */
.page-products .pt-small {
  display: grid;
  gap: 20px;
  padding: 26px 20px;
  border-radius: var(--radius-l);
  border: 1px solid rgba(255, 154, 60, 0.34);
  background:
    radial-gradient(120% 90% at 100% 0%, rgba(255, 154, 60, 0.1), transparent 60%),
    linear-gradient(180deg, rgba(23, 51, 43, 0.82), rgba(10, 18, 16, 0.9));
}
.page-products .pt-small-lead {
  margin: 14px 0 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}
.page-products .pt-small-cta {
  box-shadow: 0 0 0 1px var(--amber), 0 10px 26px -18px rgba(255, 154, 60, 0.9);
}
.page-products .pt-small .media-frame {
  border-radius: var(--radius-m);
  overflow: hidden;
}

/* ---------- 开通流程 ---------- */
.page-products .pt-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  counter-reset: pt-step;
}
.page-products .pt-step {
  position: relative;
  padding: 22px 20px 20px 20px;
  border-radius: var(--radius-m);
  background: rgba(23, 51, 43, 0.55);
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--mint);
  overflow: hidden;
}
.page-products .pt-step::before {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 40px;
  background: var(--pt-gauge);
  opacity: 0.16;
  pointer-events: none;
}
.page-products .pt-step-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--mint);
}
.page-products .pt-step-title {
  margin: 10px 0 0;
  font-size: 1.08rem;
  font-weight: 800;
  color: var(--paper);
}
.page-products .pt-step-body {
  margin: 8px 0 0;
  max-width: 40em;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}
.page-products .pt-step-body a {
  color: var(--aqua);
}

/* ---------- 覆盖与节奏 ---------- */
.page-products .pt-coverage {
  display: grid;
  gap: 18px;
}
.page-products .pt-coverage-lead {
  margin: 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}
.page-products .pt-stats {
  display: grid;
  gap: 10px;
  margin-top: 22px;
}
.page-products .pt-stats .stat {
  padding: 14px 16px;
  border-radius: var(--radius-s);
  background: rgba(23, 51, 43, 0.55);
  border-left: 3px solid var(--aqua);
}
.page-products .pt-stats .stat-value {
  display: block;
  font-size: 1.6rem;
  color: var(--mint);
}
.page-products .pt-stats .stat-value em {
  font-style: normal;
  font-size: 0.66em;
  margin-left: 3px;
  color: var(--aqua);
}
.page-products .pt-stats .stat-label {
  display: block;
  margin-top: 4px;
  font-size: 12.5px;
  color: var(--mist);
}
.page-products .pt-coverage-foot {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mist);
  max-width: 34em;
}
.page-products .pt-coverage-foot a {
  color: var(--aqua);
  text-decoration: none;
  border-bottom: 1px solid rgba(111, 217, 198, 0.44);
}
.page-products .pt-coverage-foot a:hover {
  color: var(--mint);
  border-bottom-color: var(--mint);
}

/* ---------- 尾部入口 ---------- */
.page-products .pt-tail {
  padding-top: 6px;
  padding-bottom: 48px;
}
.page-products .pt-tail-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  padding: 22px 20px;
  border-radius: var(--radius-m);
  border: 1px solid var(--line-soft);
  background: linear-gradient(120deg, rgba(23, 51, 43, 0.72), rgba(10, 18, 16, 0.82));
}
.page-products .pt-tail-lead {
  margin: 0;
  flex: 1 1 260px;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--mist);
}

/* ---------- 窄屏适配 ---------- */
@media (max-width: 480px) {
  .page-products .pt-frame {
    padding: 28px 16px 24px;
  }
  .page-products .pt-fact {
    flex: 1 1 100%;
  }
  .page-products .pt-price-row {
    gap: 14px;
  }
  .page-products .pt-scale-item::after {
    display: none;
  }
  .page-products .pt-client {
    flex: 0 0 84%;
  }
}

/* ---------- 中等屏 ---------- */
@media (min-width: 720px) {
  .page-products .pt-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-products .pt-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-products .pt-client {
    flex: 0 0 300px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-products .pt-frame {
    padding: 52px 44px 44px;
  }
  .page-products .pt-panel-grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: start;
    gap: 22px;
  }
  .page-products .pt-billing {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    grid-template-areas:
      "panel trans"
      "chart chart";
    gap: 20px;
  }
  .page-products .pt-billing > .pt-price-block:nth-child(1) { grid-area: panel; }
  .page-products .pt-billing > .pt-price-block:nth-child(2) { grid-area: trans; }
  .page-products .pt-billing > .pt-figure--scale {
    grid-area: chart;
    justify-self: start;
    max-width: 100%;
  }
  .page-products .pt-figure--scale img {
    height: 360px;
  }
  .page-products .pt-small {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: start;
    gap: 28px;
    padding: 34px 32px;
  }
  .page-products .pt-coverage {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
    gap: 26px;
  }
  .page-products .pt-list li {
    display: grid;
    grid-template-columns: minmax(0, 0.34fr) minmax(0, 1fr);
    gap: 16px;
    align-items: baseline;
    padding: 16px 20px 16px 24px;
  }
  .page-products .pt-li-val {
    margin-top: 0;
  }
}

/* ---------- 大屏 ---------- */
@media (min-width: 1180px) {
  .page-products .pt-title {
    max-width: 16em;
  }
  .page-products .pt-list li {
    grid-template-columns: minmax(0, 0.28fr) minmax(0, 1fr);
  }
}

/* ---------- 降低动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-products .pt-tab,
  .page-products .breadcrumb-link {
    transition: none;
  }
}
<<<END>>>