.page-products {
  --pp-pad: clamp(1.1rem, 4vw, 2rem);
  --pp-num: clamp(1.7rem, 5vw, 2.3rem);
  background:
    radial-gradient(900px 520px at 84% -8%, rgba(200, 164, 93, 0.13), transparent 64%),
    radial-gradient(720px 480px at 4% 46%, rgba(184, 72, 50, 0.09), transparent 66%),
    linear-gradient(180deg, var(--ink-900) 0%, var(--ink-950) 100%);
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

.page-products h1,
.page-products h2,
.page-products h3 {
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.24;
  letter-spacing: 0.01em;
  margin: 0;
}

.page-products h1 {
  font-size: var(--fs-h1);
  letter-spacing: 0.015em;
  margin-bottom: 0.5em;
}

.page-products h2 {
  font-size: var(--fs-h2);
  margin-bottom: 0.55em;
}

.page-products h3 {
  font-size: clamp(1.02rem, 1.7vw, 1.26rem);
  margin-bottom: 0.4em;
}

.page-products p {
  margin: 0 0 0.85em;
}

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

.page-products .section {
  padding-block: clamp(2.3rem, 5.5vw, 4.2rem);
}

.page-products a {
  color: inherit;
  text-decoration: none;
}

.page-products .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  margin: 0 0 1.1rem;
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  letter-spacing: 0.06em;
  color: var(--cool);
}

.page-products .breadcrumbs a {
  color: var(--cool);
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-products .breadcrumbs a:hover,
.page-products .breadcrumbs a:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.page-products .breadcrumbs__sep {
  color: var(--gold-deep);
}

.prod-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0 0 0.85rem;
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  letter-spacing: 0.16em;
  color: var(--gold);
}

.prod-kicker::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--gold);
}

.page-products .media-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line-cool);
  background: rgba(143, 179, 196, 0.07);
}

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

.page-products .media-frame__caption {
  display: block;
  margin-top: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1.6;
  letter-spacing: 0.03em;
  color: var(--cool);
}

/* ---------- 首屏 ---------- */
.prod-hero {
  padding: clamp(4.2rem, 8vw, 5.5rem) 0 clamp(1.8rem, 4vw, 3rem);
}

.prod-hero__frame {
  position: relative;
  padding: clamp(1.15rem, 3.4vw, 2.5rem);
  border: 1px solid var(--line-gold);
  background:
    linear-gradient(158deg, rgba(143, 179, 196, 0.08), rgba(10, 26, 42, 0) 58%),
    rgba(8, 20, 31, 0.55);
}

.prod-hero__frame::before,
.prod-hero__frame::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  border: 1px solid var(--gold);
}

.prod-hero__frame::before {
  top: -1px;
  left: -1px;
  border-right: 0;
  border-bottom: 0;
}

.prod-hero__frame::after {
  right: -1px;
  bottom: -1px;
  border-top: 0;
  border-left: 0;
}

.prod-hero__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.8rem);
  align-items: center;
}

.prod-hero__intro {
  max-width: 48ch;
  color: rgba(244, 239, 228, 0.82);
}

.prod-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin: 1.3rem 0 1.7rem;
}

.prod-hero__facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 0.75rem 1rem;
  margin: 0;
  padding: 1rem 0 0;
  list-style: none;
  border-top: 1px solid var(--line-cool);
  font-size: 0.8rem;
  color: var(--cool);
}

.prod-hero__facts b {
  display: block;
  margin-bottom: 0.15rem;
  font-family: var(--font-mono);
  font-size: 1.06rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--gold);
}

.prod-hero__figure {
  margin: 0;
}

@media (min-width: 880px) {
  .prod-hero__grid {
    grid-template-columns: 1.15fr 0.85fr;
  }
}

/* ---------- 平台能力 ---------- */
.prod-overview__head {
  max-width: 62ch;
  margin-bottom: clamp(1.3rem, 3vw, 2rem);
}

.prod-overview__head p {
  color: rgba(244, 239, 228, 0.78);
}

.prod-overview__head a {
  color: var(--gold);
  border-bottom: 1px solid var(--line-gold);
}

.prod-overview__head a:hover,
.prod-overview__head a:focus-visible {
  color: var(--jade);
  border-bottom-color: var(--gold);
}

.prod-cap {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--line-cool);
  background: var(--line-cool);
}

.prod-cap__item {
  padding: clamp(1rem, 2.4vw, 1.6rem);
  background: rgba(8, 20, 31, 0.72);
}

.prod-cap__item p {
  font-size: 0.9rem;
  color: rgba(244, 239, 228, 0.72);
}

.prod-cap__num {
  display: block;
  margin-bottom: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  color: var(--gold);
}

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

@media (min-width: 1040px) {
  .prod-cap {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .prod-cap__item:first-child {
    grid-column: span 2;
  }
}

/* ---------- 双列费用 ---------- */
.prod-fee__head {
  display: grid;
  gap: 1.4rem;
  margin-bottom: clamp(1.4rem, 3vw, 2.2rem);
}

.prod-fee__head p {
  color: rgba(244, 239, 228, 0.78);
}

.prod-fee__figure {
  margin: 0;
}

.prod-fee__tracks {
  display: flex;
  gap: 1rem;
  overflow-x: auto;
  padding-bottom: 0.9rem;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.prod-track {
  position: relative;
  flex: 0 0 88%;
  scroll-snap-align: start;
  padding: clamp(1.1rem, 2.6vw, 1.7rem);
  display: flex;
  flex-direction: column;
}

.prod-track::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
}

.prod-track--gold {
  border: 1px solid var(--glass-edge);
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.prod-track--gold::before {
  background: linear-gradient(90deg, var(--gold), rgba(200, 164, 93, 0) 72%);
}

.prod-track--cinnabar {
  border: 1px solid rgba(17, 24, 32, 0.14);
  background: var(--paper);
  color: var(--ink-800);
}

.prod-track--cinnabar::before {
  background: linear-gradient(90deg, var(--cinnabar), rgba(184, 72, 50, 0) 72%);
}

.prod-track__head {
  margin-bottom: 0.9rem;
}

.prod-track__title {
  margin: 0.55rem 0 0.35rem;
}

.prod-track__note {
  font-size: 0.85rem;
  line-height: 1.65;
}

.prod-track--gold .prod-track__note {
  color: var(--cool);
}

.prod-track--cinnabar .prod-track__note {
  color: rgba(17, 24, 32, 0.66);
}

.prod-tier {
  display: grid;
  gap: 0.9rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.prod-tier__item {
  padding-top: 0.9rem;
  border-top: 1px dashed var(--line-cool);
}

.prod-track--cinnabar .prod-tier__item {
  border-top-color: rgba(17, 24, 32, 0.18);
}

.prod-tier__top {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem;
}

.prod-tier__name {
  font-weight: 600;
  font-size: 0.98rem;
}

.prod-tier__price {
  font-family: var(--font-mono);
  font-size: var(--pp-num);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
}

.prod-track--gold .prod-tier__price {
  color: var(--gold);
}

.prod-track--cinnabar .prod-tier__price {
  color: var(--cinnabar);
}

.prod-tier__unit {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  color: var(--cool);
}

.prod-track--cinnabar .prod-tier__unit {
  color: rgba(17, 24, 32, 0.56);
}

.prod-tier__desc {
  margin: 0.4rem 0 0;
  font-size: 0.86rem;
  line-height: 1.68;
  color: rgba(244, 239, 228, 0.72);
}

.prod-track--cinnabar .prod-tier__desc {
  color: rgba(17, 24, 32, 0.72);
}

.prod-fee__foot {
  margin-top: 1.2rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.03em;
  color: var(--cool);
}

.prod-fee__foot a {
  color: var(--gold);
  border-bottom: 1px solid var(--line-gold);
}

.prod-fee__foot a:hover,
.prod-fee__foot a:focus-visible {
  color: var(--jade);
  border-bottom-color: var(--gold);
}

@media (min-width: 900px) {
  .prod-fee__head {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: end;
  }

  .prod-fee__tracks {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: clamp(1rem, 2.4vw, 1.8rem);
    overflow: visible;
    padding-bottom: 0;
  }

  .prod-track {
    flex: none;
  }
}

/* ---------- 移动端功能切片 ---------- */
.prod-mobile__head {
  max-width: 62ch;
  margin-bottom: clamp(1.2rem, 3vw, 1.8rem);
}

.prod-mobile__head p {
  color: rgba(244, 239, 228, 0.78);
}

.prod-slice {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-gold);
}

.prod-slice__row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.35rem 0.9rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--line-cool);
}

.prod-slice__row h3 {
  margin-bottom: 0.25rem;
}

.prod-slice__row p {
  font-size: 0.9rem;
  color: rgba(244, 239, 228, 0.74);
}

.prod-slice__idx {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  color: var(--gold-deep);
}

.prod-slice__meta {
  grid-column: 2;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--cool);
}

.prod-seat {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.9rem 1.3rem;
  margin-top: 1.4rem;
  padding: 1.1rem 1.2rem;
  border: 1px solid var(--glass-edge);
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.prod-seat__num {
  font-family: var(--font-mono);
  font-size: clamp(1.9rem, 5vw, 2.6rem);
  font-weight: 700;
  line-height: 1;
  color: var(--gold);
}

.prod-seat__text {
  flex: 1 1 15rem;
  margin: 0;
  font-size: 0.92rem;
  color: rgba(244, 239, 228, 0.84);
}

@media (min-width: 820px) {
  .prod-slice__row {
    grid-template-columns: 4rem minmax(0, 1fr) 13rem;
    align-items: start;
    gap: 0.5rem 1.4rem;
  }

  .prod-slice__meta {
    grid-column: 3;
    text-align: right;
    padding-top: 0.35rem;
  }
}

/* ---------- 资料库深链 ---------- */
.prod-library__card {
  position: relative;
  display: grid;
  gap: clamp(1.2rem, 3vw, 2rem);
  padding: clamp(1.15rem, 3vw, 2.2rem);
  border: 1px solid rgba(17, 24, 32, 0.14);
  background: var(--paper);
  color: var(--ink-800);
  box-shadow: 0 30px 60px -48px rgba(6, 15, 24, 0.95);
}

.prod-library__card::after {
  content: "";
  position: absolute;
  top: 0;
  right: clamp(1.4rem, 4vw, 3rem);
  width: 72px;
  height: 18px;
  background: var(--paper-2);
  border: 1px solid rgba(17, 24, 32, 0.1);
  border-top: 0;
}

.prod-library__figure {
  margin: 0;
}

.prod-library__body p {
  color: rgba(17, 24, 32, 0.76);
}

.prod-library__page {
  display: inline-block;
  margin-bottom: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  color: var(--cinnabar);
}

.prod-library__fees {
  display: grid;
  gap: 0.55rem;
  margin: 1rem 0 1.3rem;
  padding: 0;
  list-style: none;
}

.prod-library__fees li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.4rem 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px dashed rgba(17, 24, 32, 0.18);
  font-size: 0.92rem;
}

.prod-library__price {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--cinnabar);
}

@media (min-width: 860px) {
  .prod-library__card {
    grid-template-columns: 0.82fr 1.18fr;
    align-items: center;
  }
}

/* ---------- 版本对照 ---------- */
.prod-compare__head {
  max-width: 62ch;
  margin-bottom: clamp(1.2rem, 3vw, 1.8rem);
}

.prod-compare__head p {
  color: rgba(244, 239, 228, 0.78);
}

.prod-compare__scroll {
  overflow-x: auto;
  border: 1px solid var(--line-cool);
  -webkit-overflow-scrolling: touch;
}

.prod-compare__scroll:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

.prod-table {
  width: 100%;
  min-width: 660px;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.prod-table th,
.prod-table td {
  padding: 0.85rem 1rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line-cool);
}

.prod-table thead th {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  color: var(--gold);
  background: rgba(200, 164, 93, 0.09);
  white-space: nowrap;
}

.prod-table tbody th {
  position: sticky;
  left: 0;
  z-index: 1;
  background: var(--ink-800);
  color: var(--paper);
  font-weight: 600;
  white-space: nowrap;
}

.prod-table td {
  color: rgba(244, 239, 228, 0.84);
}

.prod-table tbody tr:nth-child(even) td {
  background: rgba(143, 179, 196, 0.05);
}

.prod-table__num {
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--gold);
}

.prod-compare__foot {
  display: grid;
  gap: clamp(1.3rem, 3vw, 2rem);
  margin-top: clamp(1.4rem, 3vw, 2rem);
}

.prod-compare__figure {
  margin: 0;
}

.prod-advice {
  display: grid;
  gap: 0.8rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.prod-advice li {
  position: relative;
  padding-left: 1.15rem;
  font-size: 0.92rem;
  color: rgba(244, 239, 228, 0.82);
}

.prod-advice li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 6px;
  border: 1px solid var(--gold);
  transform: rotate(45deg);
}

@media (min-width: 900px) {
  .prod-compare__foot {
    grid-template-columns: 0.82fr 1.18fr;
    align-items: start;
  }
}

/* ---------- 开通流程 ---------- */
.prod-start__head {
  max-width: 62ch;
  margin-bottom: clamp(1.3rem, 3vw, 1.9rem);
}

.prod-start__head p {
  color: rgba(244, 239, 228, 0.78);
}

.prod-steps {
  display: grid;
  gap: 1px;
  margin: 0 0 clamp(1.5rem, 3.5vw, 2.4rem);
  padding: 0;
  list-style: none;
  border: 1px solid var(--line-cool);
  background: var(--line-cool);
}

.prod-steps__item {
  padding: 1.15rem 1.1rem;
  background: rgba(8, 20, 31, 0.78);
}

.prod-steps__item h3 {
  margin-bottom: 0.3rem;
}

.prod-steps__item p {
  font-size: 0.88rem;
  color: rgba(244, 239, 228, 0.72);
}

.prod-steps__num {
  display: block;
  margin-bottom: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.prod-start__layout {
  display: grid;
  gap: clamp(1.3rem, 3vw, 2rem);
}

.prod-start__figure {
  margin: 0;
}

.prod-start__panel {
  padding: clamp(1.1rem, 2.6vw, 1.7rem);
  border: 1px solid var(--line-cool);
  background: rgba(143, 179, 196, 0.05);
}

.prod-start__panel p {
  font-size: 0.92rem;
  color: rgba(244, 239, 228, 0.8);
}

.prod-start__panel .collapse {
  margin: 1rem 0 1.2rem;
}

.prod-start__panel .collapse__body ul {
  margin: 0;
  padding-left: 1.15rem;
  display: grid;
  gap: 0.55rem;
  font-size: 0.88rem;
  color: rgba(244, 239, 228, 0.76);
}

.prod-start__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-bottom: 0.9rem;
}

.prod-start__hint {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--cool);
}

@media (min-width: 760px) {
  .prod-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .prod-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .prod-start__layout {
    grid-template-columns: 0.9fr 1.1fr;
    align-items: start;
  }
}