.page-products {
  --plan-line: rgba(244, 241, 232, .16);
  --plan-line-strong: rgba(244, 241, 232, .3);
  --plan-surface: rgba(255, 255, 255, .035);
  background: var(--indigo-900);
  color: var(--bone);
  overflow-x: hidden;
}

/* ============ 首屏 ============ */
.page-products .plan-hero {
  position: relative;
  padding: 26px 0 48px;
  background:
    radial-gradient(90% 70% at 6% -10%, rgba(20, 80, 200, .42), transparent 62%),
    radial-gradient(70% 60% at 98% 6%, rgba(255, 106, 26, .13), transparent 60%),
    linear-gradient(180deg, var(--indigo-850), var(--indigo-900));
  border-bottom: 1px solid var(--plan-line);
}

.page-products .plan-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(45, 125, 255, .12) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(45, 125, 255, .12) 1px, transparent 1px);
  background-size: 88px 88px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .85), transparent 88%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .85), transparent 88%);
  pointer-events: none;
}

.page-products .plan-hero > .shell {
  position: relative;
  z-index: 1;
}

.page-products .plan-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 7.2vw, 58px);
  line-height: 1.08;
  letter-spacing: -.02em;
  max-width: 17ch;
}

.page-products .plan-hero__lede {
  margin: 16px 0 0;
  max-width: 62ch;
  color: var(--text-dim);
  font-size: 16px;
  line-height: 1.8;
}

.page-products .plan-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
  background: var(--plan-line);
  border: 1px solid var(--plan-line);
}

.page-products .plan-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 14px;
  background: var(--indigo-850);
}

.page-products .plan-fact-num {
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1;
  font-weight: 600;
  color: var(--lime);
}

.page-products .plan-hero__facts li:nth-child(2) .plan-fact-num { color: var(--blue-bright); }
.page-products .plan-hero__facts li:nth-child(3) .plan-fact-num { color: var(--gold); }
.page-products .plan-hero__facts li:nth-child(4) .plan-fact-num { color: var(--orange); }

.page-products .plan-fact-label {
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-dim);
}

/* ============ 通用节标题 ============ */
.page-products .plan-section-head {
  max-width: 660px;
  margin-bottom: 26px;
}

.page-products .plan-section-head__note {
  margin: 12px 0 0;
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.8;
}

/* ============ 三条路 ============ */
.page-products .plan-routes {
  padding: 48px 0;
}

.page-products .plan-routes__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--plan-line);
  border: 1px solid var(--plan-line);
}

.page-products .plan-route {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 20px 24px;
  background: var(--indigo-850);
  border-top: 2px solid transparent;
}

.page-products .plan-route--lime { border-top-color: var(--lime); }
.page-products .plan-route--blue { border-top-color: var(--blue-bright); }
.page-products .plan-route--gold { border-top-color: var(--gold); }

.page-products .plan-route .title-md {
  margin: 4px 0 0;
}

.page-products .plan-route p {
  margin: 0;
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.75;
}

.page-products .plan-route__index {
  position: absolute;
  top: 16px;
  right: 18px;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--text-faint);
}

.page-products .plan-route .tag {
  align-self: flex-start;
}

.page-products .plan-link {
  align-self: flex-start;
  margin-top: 4px;
  padding-bottom: 2px;
  color: var(--bone);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid var(--blue-bright);
  transition: color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}

.page-products .plan-link:hover,
.page-products .plan-link:focus-visible {
  color: var(--blue-bright);
  border-bottom-color: var(--lime);
}

/* ============ 分段切换 ============ */
.page-products .plan-switch {
  position: relative;
  padding: 48px 0;
  background: linear-gradient(180deg, var(--indigo-900), var(--indigo-800));
  border-top: 1px solid var(--plan-line);
  border-bottom: 1px solid var(--plan-line);
}

.page-products .tab-input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip-path: inset(50%);
}

.page-products .plan-tabs {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  margin-bottom: 20px;
}

.page-products .plan-tab {
  display: flex;
  align-items: baseline;
  gap: 10px;
  min-height: 44px;
  padding: 13px 16px;
  border: 1px solid var(--plan-line);
  background: var(--plan-surface);
  color: var(--text-dim);
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}

.page-products .plan-tab__num {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--text-faint);
}

.page-products .plan-tab:hover {
  background: rgba(45, 125, 255, .14);
  border-color: var(--plan-line-strong);
  color: var(--bone);
}

.page-products #tab-new:checked ~ .plan-tabs label[for="tab-new"],
.page-products #tab-archive:checked ~ .plan-tabs label[for="tab-archive"],
.page-products #tab-column:checked ~ .plan-tabs label[for="tab-column"] {
  background: linear-gradient(180deg, rgba(20, 80, 200, .55), rgba(20, 80, 200, .16));
  border-color: var(--blue-bright);
  color: var(--paper);
  box-shadow: inset 0 -3px 0 0 var(--lime);
}

.page-products #tab-new:checked ~ .plan-tabs label[for="tab-new"] .plan-tab__num,
.page-products #tab-archive:checked ~ .plan-tabs label[for="tab-archive"] .plan-tab__num,
.page-products #tab-column:checked ~ .plan-tabs label[for="tab-column"] .plan-tab__num {
  color: var(--lime);
}

.page-products #tab-new:focus-visible ~ .plan-tabs label[for="tab-new"],
.page-products #tab-archive:focus-visible ~ .plan-tabs label[for="tab-archive"],
.page-products #tab-column:focus-visible ~ .plan-tabs label[for="tab-column"] {
  outline: 2px solid var(--blue-bright);
  outline-offset: 2px;
}

.page-products .plan-panels {
  padding: 22px 18px;
  border: 1px solid var(--plan-line);
  background: var(--plan-surface);
}

.page-products .plan-panel {
  display: none;
}

.page-products #tab-new:checked ~ .plan-panels #panel-new,
.page-products #tab-archive:checked ~ .plan-panels #panel-archive,
.page-products #tab-column:checked ~ .plan-panels #panel-column {
  display: block;
}

.page-products .plan-panel .title-md {
  margin: 10px 0 0;
  font-size: 22px;
  line-height: 1.35;
}

.page-products .plan-panel__summary {
  margin: 12px 0 0;
  max-width: 68ch;
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.85;
}

.page-products .plan-panel__split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  margin-top: 8px;
}

.page-products .plan-panel__col {
  min-width: 0;
}

/* 步骤 */
.page-products .plan-steps {
  display: grid;
  gap: 12px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-products .plan-steps li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: var(--bone);
  font-size: 15px;
  line-height: 1.7;
}

.page-products .plan-steps__num {
  flex: 0 0 auto;
  padding: 1px 5px;
  font-size: 11px;
  line-height: 1.6;
  color: var(--lime);
  border: 1px solid var(--plan-line-strong);
}

.page-products .plan-panel__tip {
  margin: 16px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--plan-line);
  color: var(--text-faint);
  font-size: 13px;
  line-height: 1.7;
}

.page-products .plan-panel__note {
  margin: 18px 0 0;
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.8;
}

.page-products .plan-panel__note .btn {
  margin-top: 4px;
}

/* 图片框 */
.page-products .plan-figure {
  margin: 22px 0 0;
  border: 1px solid var(--plan-line);
  background: var(--indigo-850);
}

.page-products .plan-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(.92) contrast(1.06);
}

.page-products .plan-figure figcaption {
  padding: 9px 12px;
  border-top: 1px solid var(--plan-line);
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--text-faint);
}

.page-products .plan-figure--square img {
  aspect-ratio: 1 / 1;
}

/* 归档时间线 */
.page-products .plan-timeline {
  position: relative;
  display: grid;
  gap: 20px;
  margin: 22px 0 0;
  padding: 0 0 0 20px;
  list-style: none;
  border-left: 1px solid var(--plan-line-strong);
}

.page-products .plan-timeline__item {
  position: relative;
}

.page-products .plan-timeline__item::before {
  content: "";
  position: absolute;
  left: -25px;
  top: 7px;
  width: 9px;
  height: 9px;
  background: var(--gold);
  box-shadow: 0 0 0 3px rgba(242, 184, 75, .18);
}

.page-products .plan-timeline__tag {
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--gold);
}

.page-products .plan-timeline__title {
  margin: 6px 0 0;
  font-size: 17px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--paper);
}

.page-products .plan-timeline__item p {
  margin: 6px 0 0;
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.75;
}

/* 专栏组件清单 */
.page-products .plan-parts {
  display: grid;
  gap: 1px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  background: var(--plan-line);
  border: 1px solid var(--plan-line);
}

.page-products .plan-parts li {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 4px 12px;
  padding: 14px 16px;
  background: var(--indigo-850);
}

.page-products .plan-parts__key {
  grid-row: span 2;
  font-size: 12px;
  line-height: 1.6;
  color: var(--gold);
}

.page-products .plan-parts strong {
  font-size: 15px;
  color: var(--paper);
}

.page-products .plan-parts span:last-child {
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.7;
}

/* ============ 路径图（米白分区） ============ */
.page-products .plan-path {
  padding: 48px 0;
  background: var(--bone);
  color: var(--ink);
}

.page-products .plan-path .eyebrow {
  color: var(--clay);
}

.page-products .plan-path .title-lg {
  color: var(--ink);
  margin: 10px 0 0;
}

.page-products .plan-path__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
}

.page-products .plan-path__lede {
  margin: 14px 0 0;
  max-width: 58ch;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.85;
}

.page-products .plan-path__steps {
  display: grid;
  gap: 1px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  background: var(--line-light);
  border: 1px solid var(--line-light);
}

.page-products .plan-path__steps li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  background: var(--paper);
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.7;
}

.page-products .plan-path__num {
  flex: 0 0 auto;
  font-size: 12px;
  line-height: 1.9;
  color: var(--blue);
}

.page-products .plan-path__meta {
  margin: 16px 0 0;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--rock);
}

.page-products .plan-path .btn-ghost {
  margin-top: 14px;
  border-color: var(--ink);
  color: var(--ink);
}

.page-products .plan-path .btn-ghost:hover,
.page-products .plan-path .btn-ghost:focus-visible {
  background: var(--ink);
  color: var(--bone);
}

.page-products .plan-path .plan-figure {
  margin-top: 26px;
  border-color: var(--line-light);
  background: var(--paper);
}

.page-products .plan-path .plan-figure figcaption {
  border-top-color: var(--line-light);
  color: var(--rock);
}

.page-products .plan-figure--bone img {
  filter: saturate(.85) contrast(1.04);
}

/* ============ 版本节奏 ============ */
.page-products .plan-cadence {
  padding: 48px 0 64px;
  background: linear-gradient(180deg, var(--indigo-850), var(--indigo-900));
}

.page-products .plan-cadence__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--plan-line);
  border: 1px solid var(--plan-line);
}

.page-products .plan-cadence__item {
  padding: 20px 18px;
  background: rgba(11, 21, 51, .62);
}

.page-products .plan-cadence__num {
  margin: 0;
  font-size: 30px;
  font-weight: 600;
  line-height: 1;
  color: var(--gold);
}

.page-products .plan-cadence__item .title-md {
  margin: 8px 0 0;
  font-size: 17px;
  font-weight: 800;
  color: var(--paper);
}

.page-products .plan-cadence__item p {
  margin: 8px 0 0;
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.75;
}

.page-products .plan-cadence__support {
  margin-top: 26px;
  padding: 18px 18px 20px;
  border-left: 2px solid var(--blue-bright);
  background: rgba(20, 80, 200, .1);
}

.page-products .plan-cadence__support p {
  margin: 0;
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.85;
}

.page-products .plan-cadence__support p + p {
  margin-top: 10px;
}

.page-products .plan-cadence__support .plan-link {
  display: inline;
  margin: 0;
  font-size: 14px;
}

/* ============ 断点 ============ */
@media (min-width: 720px) {
  .page-products .plan-hero {
    padding: 40px 0 66px;
  }

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

  .page-products .plan-hero__facts li {
    padding: 20px 18px;
  }

  .page-products .plan-routes,
  .page-products .plan-switch,
  .page-products .plan-path,
  .page-products .plan-cadence {
    padding-top: 64px;
  }

  .page-products .plan-routes__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-products .plan-tabs {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-products .plan-panels {
    padding: 32px 28px;
  }

  .page-products .plan-cadence__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-products .plan-parts li {
    grid-template-columns: 32px 1fr;
    padding: 16px 20px;
  }
}

@media (min-width: 960px) {
  .page-products .plan-section-head {
    margin-bottom: 34px;
  }

  .page-products .plan-panel__split {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    align-items: start;
  }

  .page-products .plan-panel__split .plan-figure {
    margin-top: 20px;
  }

  .page-products .plan-path__grid {
    grid-template-columns: 1.05fr .95fr;
    gap: 44px;
    align-items: start;
  }

  .page-products .plan-path .plan-figure {
    margin-top: 0;
  }

  .page-products .plan-timeline {
    gap: 26px;
  }
}

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