.page-products {
  --prod-hair: rgba(42, 54, 68, .55);
  --prod-panel: rgba(18, 25, 34, .72);
  padding-bottom: clamp(3rem, 8vw, 6rem);
}

/* ---------- 首屏 ---------- */
.page-products .prod-hero {
  position: relative;
  margin: clamp(1.25rem, 3vw, 2rem) 0 clamp(2.5rem, 6vw, 4rem);
  padding: clamp(1.5rem, 4vw, 3rem);
  border: 1px solid var(--line);
  border-left: 4px solid var(--cyan);
  background-color: var(--ink-2);
  background-image:
    repeating-linear-gradient(90deg, var(--prod-hair) 0 1px, transparent 1px 64px),
    repeating-linear-gradient(0deg, var(--prod-hair) 0 1px, transparent 1px 64px);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

.page-products .prod-hero::after {
  content: "";
  position: absolute;
  right: -60px;
  bottom: -60px;
  width: 220px;
  height: 220px;
  border: 1px solid var(--cyan-edge);
  border-radius: 50%;
  pointer-events: none;
}

.page-products .prod-hero__title {
  margin: .75rem 0 1rem;
  max-width: 22ch;
  font-size: clamp(1.9rem, 5vw, 3.1rem);
  line-height: 1.15;
  letter-spacing: -.02em;
  color: var(--white);
}

.page-products .prod-hero__lede {
  max-width: 62ch;
  color: var(--silver);
}

.page-products .prod-hero__bar {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1.75rem;
  margin: 1.75rem 0 0;
  padding: 1rem 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--muted);
}

.page-products .prod-hero__bar li {
  display: inline-flex;
  align-items: baseline;
  gap: .4rem;
}

.page-products .prod-hero__num {
  font-size: 18px;
  font-weight: 700;
  color: var(--cyan);
}

/* ---------- 通用区块 ---------- */
.page-products .section {
  margin-top: clamp(2.75rem, 7vw, 5rem);
}

.page-products .section-title {
  margin-bottom: .85rem;
  font-size: clamp(1.35rem, 3.4vw, 2.1rem);
  line-height: 1.25;
  letter-spacing: -.02em;
  color: var(--white);
}

.page-products .lede {
  max-width: 68ch;
  color: var(--silver);
}

/* ---------- 设备入口切换 ---------- */
.page-products .device-board {
  margin-top: 1.75rem;
}

.page-products .device-board .tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-bottom: 1.25rem;
}

.page-products .device-tab {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .6rem .95rem;
  border: 1px solid var(--line);
  background: var(--ink-2);
  color: var(--silver);
  font-family: var(--font-sans);
  font-size: 14px;
  cursor: pointer;
}

.page-products .device-tab .device-tab__num {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
}

.page-products .device-tab[aria-selected="true"] {
  border-color: var(--cyan);
  background: var(--cyan-soft);
  color: var(--white);
}

.page-products .device-tab[aria-selected="true"] .device-tab__num {
  color: var(--cyan);
}

.page-products .device-tab:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-products .device-panel {
  padding: clamp(1.1rem, 3vw, 1.75rem);
  border: 1px solid var(--line);
  border-top: 3px solid var(--cyan);
  background: var(--prod-panel);
}

.page-products .device-panel__claim {
  margin-bottom: 1rem;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--white);
}

.page-products .device-panel__media {
  margin-bottom: 1.25rem;
}

.page-products .spec-list {
  margin: 0;
}

.page-products .spec-row {
  display: grid;
  gap: .3rem;
  padding: .9rem 0;
  border-top: 1px solid var(--line);
}

.page-products .spec-row:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-products .spec-row dt {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--cyan);
}

.page-products .spec-row dd {
  margin: 0;
  color: var(--silver);
}

/* ---------- 判断顺序 ---------- */
.page-products .choose-split {
  display: grid;
  gap: 1.75rem;
  margin-top: 1.75rem;
}

.page-products .step-list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: none;
}

.page-products .step-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  padding: 1.15rem 0;
  border-top: 1px solid var(--line);
}

.page-products .step-item:first-child {
  border-top: 3px solid var(--orange);
}

.page-products .step-item__num {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--orange);
}

.page-products .step-item__title {
  margin: 0 0 .4rem;
  font-size: 17px;
  color: var(--white);
}

.page-products .step-item__body p {
  margin: 0;
  color: var(--silver);
}

.page-products .choose-media {
  align-self: start;
}

/* ---------- 活动周期 ---------- */
.page-products .cycle-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.page-products .cycle-head__tag {
  flex: none;
  margin-top: .35rem;
}

.page-products .cycle-split {
  display: grid;
  gap: 1.75rem;
  margin-top: 1.75rem;
}

.page-products .cycle-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .cycle-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: .9rem;
  padding: .95rem 0;
  border-bottom: 1px solid var(--line);
}

.page-products .cycle-item__dot {
  width: 10px;
  height: 10px;
  margin-top: .5rem;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 4px var(--orange-edge);
}

.page-products .cycle-item__tag {
  margin: 0 0 .25rem;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--orange);
}

.page-products .cycle-item__body p:last-child {
  margin: 0;
  color: var(--silver);
}

/* ---------- 账户清单 ---------- */
.page-products .account-head {
  display: grid;
  gap: 1.5rem;
}

.page-products .account-media {
  margin: 0;
}

.page-products .account-list {
  margin-top: 1.75rem;
}

.page-products .account-list .checklist__item {
  padding: .9rem 0;
  border-bottom: 1px solid var(--line);
}

.page-products .account-list .checklist__text strong {
  display: block;
  margin-bottom: .2rem;
  color: var(--white);
  font-size: 16px;
}

.page-products .account-list .checklist__text span {
  display: block;
  color: var(--silver);
  font-size: 15px;
  line-height: 1.7;
}

.page-products .account-list .checklist__item[aria-pressed="true"] {
  background: var(--cyan-soft);
}

.page-products .account-list .checklist__item[aria-pressed="true"] .checklist__text strong {
  color: var(--cyan);
}

.page-products .account-foot {
  margin-top: 1.25rem;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--muted);
}

/* ---------- V3 编号 ---------- */
.page-products .v3-split {
  display: grid;
  gap: 1.75rem;
  margin-top: 1.75rem;
}

.page-products .v3-media {
  margin: 0;
}

.page-products .v3-notes {
  display: grid;
  gap: 1rem;
}

.page-products .v3-note {
  margin: 0;
  padding: 1.1rem 1.25rem;
}

.page-products .v3-note__label {
  margin: 0 0 .4rem;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--violet);
}

.page-products .panel--accent.v3-note .v3-note__label {
  color: var(--cyan);
}

.page-products .v3-note p:last-child {
  margin: 0;
  color: var(--silver);
}

/* ---------- 场景选择 ---------- */
.page-products .scene-grid {
  margin-top: 1.75rem;
}

.page-products .scene-card {
  display: flex;
  flex-direction: column;
  gap: .6rem;
}

.page-products .scene-card__tag {
  align-self: flex-start;
}

.page-products .scene-card__title {
  margin: 0;
  font-size: 18px;
  color: var(--white);
}

.page-products .scene-card p {
  margin: 0;
  color: var(--silver);
}

.page-products .scene-card .btn {
  align-self: flex-start;
  margin-top: auto;
}

/* ---------- 尾部行动区 ---------- */
.page-products .prod-cta__box {
  display: grid;
  gap: 1.5rem;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  border: 1px solid var(--line);
  border-left: 4px solid var(--orange);
  background: var(--ink-2);
  box-shadow: var(--shadow-hard);
}

.page-products .prod-cta__title {
  margin: 0 0 .6rem;
  font-size: clamp(1.2rem, 3vw, 1.7rem);
  line-height: 1.3;
  color: var(--white);
}

.page-products .prod-cta__text {
  margin: 0;
  max-width: 60ch;
  color: var(--silver);
}

.page-products .prod-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 780px) {
  .page-products .account-head {
    grid-template-columns: 1.1fr .9fr;
    align-items: start;
    gap: 2.5rem;
  }

  .page-products .choose-split,
  .page-products .cycle-split,
  .page-products .v3-split {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

  .page-products .cycle-split {
    grid-template-columns: .85fr 1.15fr;
  }

  .page-products .prod-cta__box {
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 2.5rem;
  }
}

@media (min-width: 960px) {
  .page-products .device-board {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 2.5rem;
    align-items: start;
  }

  .page-products .device-board .tabs__list {
    flex-direction: column;
    flex-wrap: nowrap;
    margin-bottom: 0;
    position: sticky;
    top: calc(var(--header-h) + 1.25rem);
  }

  .page-products .device-tab {
    width: 100%;
    justify-content: flex-start;
  }

  .page-products .spec-row {
    grid-template-columns: 130px 1fr;
    gap: 1.25rem;
  }

  .page-products .spec-row dt {
    padding-top: .15rem;
  }

  .page-products .account-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 2.5rem;
  }
}

@media (min-width: 1100px) {
  .page-products .step-item {
    grid-template-columns: auto 1fr;
    gap: 1.5rem;
  }
}

@media (max-width: 520px) {
  .page-products .prod-hero__bar {
    gap: .5rem 1rem;
    font-size: 12px;
  }

  .page-products .device-tab {
    flex: 1 1 auto;
    justify-content: center;
  }
}
</main>