.page-products {
  --prod-gap: clamp(18px, 2.6vw, 30px);
  --prod-brd: rgba(53, 224, 208, 0.16);
  --prod-shell: rgba(19, 28, 46, 0.72);
  color: var(--bone);
  overflow-x: hidden;
}

.page-products img {
  max-width: 100%;
  height: auto;
}

.page-products .section {
  padding-top: clamp(36px, 5vw, 72px);
  padding-bottom: clamp(36px, 5vw, 72px);
}

.page-products .prod-intro {
  padding-top: clamp(20px, 3vw, 40px);
  padding-bottom: clamp(20px, 3vw, 36px);
}

.page-products h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 5.6vw, 62px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  max-width: 16em;
}

.page-products .prod-lede {
  margin-top: 20px;
  max-width: 44em;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(242, 239, 233, 0.78);
}

@media (min-width: 768px) {
  .page-products .prod-lede {
    font-size: 17px;
  }
}

.page-products .prod-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 16px;
  margin-top: clamp(24px, 3vw, 38px);
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.page-products .prod-meta__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 600;
  line-height: 1;
  color: var(--cyan);
  letter-spacing: 0.04em;
}

.page-products .prod-meta__item--accent .prod-meta__num {
  color: var(--orange);
}

.page-products .prod-meta__label {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--stone);
}

/* 左轨 + 正文 */
.page-products .layout-rail {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.page-products .prod-rail {
  display: none;
}

.page-products .prod-body {
  min-width: 0;
}

@media (min-width: 1024px) {
  .page-products .layout-rail {
    grid-template-columns: 186px minmax(0, 1fr);
    gap: clamp(28px, 4vw, 60px);
    align-items: start;
  }

  .page-products .prod-rail {
    display: block;
    position: sticky;
    top: var(--rail-top);
    padding-top: clamp(36px, 5vw, 72px);
  }
}

.page-products .index-rail__label {
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--stone);
}

.page-products .index-rail__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 0 9px 12px;
  border-left: 2px solid transparent;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--stone);
  text-decoration: none;
  transition: color 0.22s var(--ease), border-color 0.22s var(--ease);
}

.page-products .index-rail__link:hover,
.page-products .index-rail__link[aria-current="true"] {
  color: var(--cyan);
  border-left-color: var(--cyan);
}

.page-products .index-rail__num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--stone);
}

.page-products .chapter {
  margin-bottom: clamp(20px, 2.6vw, 30px);
}

.page-products .prod-section-lede {
  margin-top: -8px;
  margin-bottom: clamp(22px, 3vw, 32px);
  max-width: 40em;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(242, 239, 233, 0.74);
}

.page-products .prod-section-note {
  margin-top: 18px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--stone);
}

.page-products .prod-section-note a,
.page-products .plan-note a,
.page-products .help-note a,
.page-products .step-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 208, 0.4);
}

/* 01 三种算法 */
.page-products .overview-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--prod-gap);
}

@media (min-width: 1024px) {
  .page-products .overview-grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: start;
  }
}

.page-products .plan-strip {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 720px) {
  .page-products .plan-strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-products .plan-card {
  position: relative;
  padding: 24px 20px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
  overflow: hidden;
}

.page-products .plan-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--cyan);
}

.page-products .plan-card--series::before {
  background: var(--violet);
}

.page-products .plan-card--member::before {
  background: var(--orange);
}

.page-products .plan-card__badge {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--stone);
}

.page-products .plan-card__title {
  margin-top: 8px;
  font-size: clamp(19px, 2vw, 22px);
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--bone);
}

.page-products .plan-card__num {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 40px;
  font-weight: 600;
  line-height: 1;
  color: var(--cyan);
}

.page-products .plan-card--series .plan-card__num {
  color: var(--violet);
}

.page-products .plan-card--member .plan-card__num {
  color: var(--orange);
}

.page-products .plan-card__unit {
  margin-left: 0.15em;
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--stone);
}

.page-products .plan-card__desc {
  margin-top: 12px;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(242, 239, 233, 0.72);
}

.page-products .plan-card__list {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-products .plan-card__list li {
  position: relative;
  padding-left: 15px;
  font-size: 13px;
  line-height: 1.65;
  color: rgba(242, 239, 233, 0.8);
}

.page-products .plan-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 5px;
  height: 5px;
  border-radius: 1px;
  background: var(--stone);
}

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

.page-products .plan-aside .media {
  border-radius: var(--radius-m);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--ink-2);
}

.page-products .plan-aside .media img {
  display: block;
  width: 100%;
  object-fit: cover;
}

.page-products .plan-note {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--stone);
}

/* 02 等级与周期 */
.page-products .tiers {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 760px) {
  .page-products .tiers {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }

  .page-products .tier-card--b {
    margin-top: 26px;
  }

  .page-products .tier-card--c {
    margin-top: 52px;
  }
}

.page-products .tier-card {
  position: relative;
  padding: 24px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background: linear-gradient(180deg, rgba(28, 39, 64, 0.86), rgba(11, 18, 32, 0.94));
}

.page-products .tier-card::after {
  content: "";
  position: absolute;
  left: 20px;
  right: 20px;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), transparent);
}

.page-products .tier-card--b::after {
  background: linear-gradient(90deg, var(--violet), transparent);
}

.page-products .tier-card--c::after {
  background: linear-gradient(90deg, var(--orange), transparent);
}

.page-products .tier-card__rank {
  display: block;
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 600;
  line-height: 1;
  color: var(--orange);
  letter-spacing: 0.06em;
}

.page-products .tier-card__name {
  margin-top: 10px;
  font-size: clamp(20px, 2.2vw, 26px);
  font-weight: 700;
  color: var(--bone);
}

.page-products .tier-card__cycle {
  margin-top: 6px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-products .tier-card__price {
  margin-top: 14px;
  padding: 10px 12px;
  border-radius: var(--radius-s);
  background: rgba(255, 138, 61, 0.1);
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--orange);
}

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

.page-products .tier-card__list li {
  padding-top: 10px;
  border-top: 1px dashed rgba(138, 147, 166, 0.2);
  font-size: 13px;
  line-height: 1.65;
  color: rgba(242, 239, 233, 0.8);
}

.page-products .tier-card__list li:first-child {
  border-top: none;
  padding-top: 0;
}

.page-products .tier-card__list .k {
  display: block;
  margin-bottom: 2px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--stone);
}

.page-products .tier-card__fit {
  margin-top: 18px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  line-height: 1.7;
  color: var(--stone);
}

/* 03 权益对照 */
.page-products .benefit-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--prod-gap);
}

@media (min-width: 960px) {
  .page-products .benefit-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
    align-items: start;
  }
}

.page-products .benefit-media .media {
  border-radius: var(--radius-l);
  overflow: hidden;
  border: 1px solid var(--prod-brd);
  background: var(--ink-2);
}

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

.page-products .benefit-media__caption {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--stone);
}

.page-products .benefit-stack {
  display: grid;
  gap: 12px;
}

.page-products .bcard {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: var(--prod-shell);
  cursor: pointer;
  outline: none;
  transition: border-color 0.22s var(--ease), background 0.22s var(--ease);
}

.page-products .bcard:hover,
.page-products .bcard:focus,
.page-products .bcard:focus-within {
  border-color: rgba(53, 224, 208, 0.45);
  background: rgba(28, 39, 64, 0.78);
}

.page-products .bcard__tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-products .bcard__tag--violet {
  color: var(--violet);
}

.page-products .bcard__tag--orange {
  color: var(--orange);
}

.page-products .bcard__title {
  margin-top: 8px;
  font-size: 18px;
  font-weight: 700;
  color: var(--bone);
}

.page-products .bcard__brief {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(242, 239, 233, 0.72);
}

.page-products .bcard__more {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.32s var(--ease), opacity 0.32s var(--ease), margin-top 0.32s var(--ease);
}

.page-products .bcard:hover .bcard__more,
.page-products .bcard:focus .bcard__more,
.page-products .bcard:focus-within .bcard__more {
  max-height: 360px;
  opacity: 1;
  margin-top: 14px;
}

.page-products .bcard__more-list {
  margin: 0;
  padding: 14px 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 8px;
}

.page-products .bcard__more-list li {
  position: relative;
  padding-left: 15px;
  font-size: 13px;
  line-height: 1.65;
  color: rgba(242, 239, 233, 0.82);
}

.page-products .bcard__more-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--cyan);
}

/* 04 移动端费用 */
.page-products .mobile-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--prod-gap);
}

@media (min-width: 900px) {
  .page-products .mobile-split {
    grid-template-columns: 292px minmax(0, 1fr);
    align-items: start;
  }
}

.page-products .phone-frame {
  margin: 0;
  max-width: 320px;
  border-radius: 26px;
  border: 1px solid var(--prod-brd);
  background: var(--ink-2);
  overflow: hidden;
  box-shadow: 0 24px 48px rgba(11, 18, 32, 0.6);
}

.page-products .phone-frame img {
  display: block;
  width: 100%;
  height: auto;
}

.page-products .mobile-panel {
  min-width: 0;
}

.page-products .filter-label {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--stone);
}

.page-products .filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.page-products .filter-chip {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 15px;
  border-radius: 999px;
  border: 1px solid rgba(53, 224, 208, 0.42);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--cyan);
  text-decoration: none;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-products .filter-chip:hover {
  background: rgba(53, 224, 208, 0.12);
}

.page-products .filter-chip--on {
  background: var(--glass-bg);
  border-color: var(--cyan);
  color: var(--bone);
}

.page-products .rate-group {
  margin-top: 16px;
  padding: 16px 18px 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: var(--prod-shell);
}

.page-products .rate-group__title {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--bone);
}

.page-products .rate-group__count {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.12em;
  color: var(--stone);
}

.page-products .rate-item {
  padding: 12px 0;
  border-top: 1px dashed rgba(138, 147, 166, 0.2);
  display: grid;
  gap: 4px;
}

.page-products .rate-item__name {
  font-size: 14px;
  color: var(--bone);
}

.page-products .rate-item__val {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--orange);
}

.page-products .rate-item__meta {
  font-size: 13px;
  line-height: 1.65;
  color: var(--stone);
}

.page-products .mobile-note {
  margin-top: 16px;
  padding-left: 14px;
  border-left: 2px solid var(--violet);
  font-size: 13px;
  line-height: 1.75;
  color: rgba(242, 239, 233, 0.74);
}

/* 05 首次观赛 */
.page-products .steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

@media (min-width: 820px) {
  .page-products .steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-products .step {
  padding: 20px 18px;
  border-left: 2px solid rgba(53, 224, 208, 0.5);
  background: linear-gradient(100deg, rgba(28, 39, 64, 0.6), rgba(11, 18, 32, 0));
}

.page-products .step__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-products .step__title {
  margin-top: 10px;
  font-size: 17px;
  font-weight: 700;
  color: var(--bone);
}

.page-products .step__text {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.75;
  color: rgba(242, 239, 233, 0.74);
}

.page-products .step-note {
  margin-top: 18px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--stone);
}

/* 06 下载与安装 */
.page-products .install-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--prod-gap);
}

@media (min-width: 900px) {
  .page-products .install-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    align-items: start;
  }
}

.page-products .install-media .media {
  border-radius: var(--radius-l);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--ink-2);
}

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

.page-products .install-body {
  min-width: 0;
}

.page-products .spec-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
}

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

.page-products .spec-row__k {
  letter-spacing: 0.08em;
  color: var(--stone);
}

.page-products .spec-row__v {
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--bone);
  text-align: right;
}

.page-products .install-steps {
  margin: 18px 0 0;
  padding-left: 18px;
  display: grid;
  gap: 9px;
  font-size: 13px;
  line-height: 1.75;
  color: rgba(242, 239, 233, 0.8);
}

.page-products .install-steps li::marker {
  color: var(--cyan);
  font-family: var(--font-mono);
}

.page-products .install-note {
  margin-top: 14px;
  font-size: 12px;
  line-height: 1.75;
  color: var(--stone);
}

/* 07 提醒 */
.page-products .alert-band {
  border-radius: var(--radius-l);
  overflow: hidden;
  border: 1px solid var(--prod-brd);
  margin-bottom: clamp(22px, 3vw, 34px);
}

.page-products .alert-band img {
  display: block;
  width: 100%;
  object-fit: cover;
}

.page-products .alert-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

@media (min-width: 760px) {
  .page-products .alert-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-products .alert-item {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: rgba(19, 28, 46, 0.7);
}

.page-products .alert-item__title {
  margin-top: 12px;
  font-size: 16px;
  font-weight: 700;
  color: var(--bone);
}

.page-products .alert-item__text {
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--stone);
}

/* 08 求助 */
.page-products .help-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

@media (min-width: 720px) {
  .page-products .help-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-products .help-card {
  display: block;
  padding: 24px 22px;
  border-radius: var(--radius-m);
  border: 1px solid var(--line);
  background: linear-gradient(140deg, rgba(53, 224, 208, 0.09), rgba(139, 92, 246, 0.1));
  text-decoration: none;
  transition: border-color 0.22s var(--ease), transform 0.22s var(--ease);
}

.page-products .help-card:hover {
  border-color: rgba(53, 224, 208, 0.5);
  transform: translateY(-2px);
}

.page-products .help-card__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-products .help-card__title {
  display: block;
  margin-top: 10px;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--bone);
}

.page-products .help-card__text {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.75;
  color: rgba(242, 239, 233, 0.72);
}

.page-products .help-note {
  margin-top: 18px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--stone);
}

@media (prefers-reduced-motion: reduce) {
  .page-products .bcard__more,
  .page-products .filter-chip,
  .page-products .help-card,
  .page-products .index-rail__link {
    transition: none;
  }

  .page-products .help-card:hover {
    transform: none;
  }

  .page-products .bcard:hover .bcard__more,
  .page-products .bcard:focus .bcard__more,
  .page-products .bcard:focus-within .bcard__more {
    max-height: none;
    opacity: 1;
  }
}
<<<PAGE_CSS_END>>>
</main>