.page-products {
  --products-subscribe-bg: #EDF2EE;
  --products-rule: rgba(11, 60, 93, .18);
}

/* ===== 首屏 ===== */
.page-products .product-hero {
  position: relative;
  overflow: hidden;
  padding-block: calc(var(--header-h) + clamp(28px, 6vw, 68px)) clamp(44px, 7vw, 88px);
  background:
    radial-gradient(125% 95% at 84% 4%, rgba(61, 220, 151, .2), transparent 58%),
    radial-gradient(90% 80% at 4% 100%, rgba(255, 122, 0, .16), transparent 62%),
    linear-gradient(158deg, var(--deep) 0%, var(--ice) 60%, var(--mid) 100%);
  color: var(--paper);
}

.page-products .product-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(185, 198, 206, .07) 0 1px, transparent 1px 92px),
    repeating-linear-gradient(0deg, rgba(185, 198, 206, .05) 0 1px, transparent 1px 92px);
  -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 .product-hero .shell {
  position: relative;
  z-index: 1;
}

.page-products .product-hero .breadcrumb,
.page-products .product-hero .breadcrumb-list,
.page-products .product-hero .breadcrumb-item {
  color: var(--frost);
}

.page-products .product-hero .breadcrumb a {
  color: var(--frost);
  text-decoration: none;
}

.page-products .product-hero .breadcrumb a:hover,
.page-products .product-hero .breadcrumb a:focus-visible {
  color: var(--aurora);
  text-decoration: underline;
}

.page-products .product-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-top: clamp(22px, 3.4vw, 36px);
}

.page-products .product-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 5.6vw, 4rem);
  line-height: 1.04;
  letter-spacing: -.012em;
  margin: 14px 0 18px;
  color: var(--paper);
  max-width: 18ch;
}

.page-products .product-hero .eyebrow {
  color: var(--aurora);
}

.page-products .product-hero .lede {
  color: rgba(245, 247, 242, .9);
  max-width: 60ch;
}

.page-products .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-products .hero-side {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  align-content: start;
}

.page-products .hero-side .stat {
  padding: 14px 14px 12px;
  background: rgba(6, 32, 47, .5);
  border-bottom: 3px solid var(--aurora);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-products .hero-side .stat:nth-child(2n) {
  border-bottom-color: var(--ember);
}

.page-products .hero-side .stat-value {
  font-family: var(--font-mono);
  font-size: clamp(1.3rem, 2.6vw, 1.75rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--paper);
}

.page-products .hero-side .stat-label {
  font-size: .76rem;
  letter-spacing: .06em;
  color: var(--frost);
}

.line-index {
  display: flex;
  flex-wrap: wrap;
  gap: 0 22px;
  margin-top: clamp(30px, 5vw, 54px);
  border-top: 1px solid rgba(245, 247, 242, .24);
}

.line-index a {
  flex: 1 1 170px;
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 14px 2px 12px;
  margin-top: -1px;
  border-top: 2px solid transparent;
  color: var(--frost);
  text-decoration: none;
  font-size: .92rem;
  transition: color .2s ease, border-color .2s ease;
}

.line-index a:hover,
.line-index a:focus-visible {
  color: var(--paper);
  border-top-color: var(--aurora);
}

.line-index-num {
  font-family: var(--font-mono);
  font-size: .76rem;
  color: var(--ember);
}

/* ===== 产品线切换 ===== */
.page-products .product-picker {
  background: var(--paper);
  padding-block: clamp(52px, 8vw, 96px);
}

.page-products .picker-head {
  max-width: 720px;
  margin-bottom: clamp(26px, 4vw, 42px);
}

.page-products .picker-head .section-title {
  margin-top: 10px;
}

.page-products .product-picker .tab-list {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 0;
  border-bottom: 1px solid var(--line);
}

.page-products .product-picker .tab {
  flex: 0 0 auto;
  appearance: none;
  background: transparent;
  border: 1px solid var(--line);
  border-bottom: none;
  border-radius: 0;
  color: var(--chalk);
  font-family: var(--font-display);
  font-size: .88rem;
  letter-spacing: .01em;
  padding: 12px 18px;
  cursor: pointer;
  white-space: nowrap;
  transition: color .2s ease, background .2s ease, border-color .2s ease;
}

.page-products .product-picker .tab:hover {
  color: var(--ice);
  border-color: var(--ice);
}

.page-products .product-picker .tab[aria-selected="true"] {
  background: var(--ice);
  border-color: var(--ice);
  color: var(--paper);
}

.page-products .product-picker .tab:focus-visible {
  outline: 2px solid var(--ember);
  outline-offset: 2px;
}

.page-products .product-picker .tab-panel:focus-visible {
  outline: 2px solid var(--ember);
  outline-offset: 4px;
}

.page-products .picker-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  padding-top: 26px;
}

.page-products .product-picker .index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-products .product-picker .index-row {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) auto;
  gap: 10px;
  align-items: baseline;
  padding: 13px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-products .index-num {
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .04em;
  color: var(--ember);
}

.page-products .index-label {
  font-weight: 700;
  font-size: .95rem;
  color: var(--ink);
}

.page-products .index-value {
  font-family: var(--font-mono);
  font-size: .82rem;
  color: var(--ice);
  text-align: right;
}

.page-products .picker-side {
  background: var(--deep);
  color: var(--paper);
  padding: clamp(20px, 3vw, 30px);
  border-left: 4px solid var(--aurora);
  box-shadow: var(--shadow-plate);
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.page-products .picker-side-text {
  margin: 0;
  font-size: .95rem;
  line-height: 1.78;
  color: rgba(245, 247, 242, .88);
}

.page-products .picker-side .btn {
  align-self: flex-start;
}

/* ===== 产品线详细章节 ===== */
.page-products .product-line {
  padding-block: clamp(52px, 8vw, 100px);
}

.page-products .product-line--paper {
  background: var(--paper);
  color: var(--ink);
}

.page-products .product-line--ice {
  background: linear-gradient(172deg, var(--ice) 0%, var(--deep) 100%);
  color: var(--paper);
}

.page-products .product-line--deep {
  background:
    radial-gradient(95% 80% at 88% 0%, rgba(31, 110, 140, .45), transparent 60%),
    var(--deep);
  color: var(--paper);
}

.page-products .product-line--subscribe {
  background: linear-gradient(180deg, var(--products-subscribe-bg) 0%, var(--paper) 100%);
  color: var(--ink);
}

.page-products .line-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: clamp(24px, 3.6vw, 40px);
}

.page-products .line-head .section-title {
  margin-top: 10px;
  max-width: 24ch;
}

.page-products .line-head .section-lead {
  flex: 1 1 100%;
}

.page-products .product-line--ice .section-title,
.page-products .product-line--deep .section-title {
  color: var(--paper);
}

.page-products .product-line--ice .eyebrow,
.page-products .product-line--deep .eyebrow {
  color: var(--aurora);
}

.page-products .product-line--ice .lede,
.page-products .product-line--deep .lede {
  color: rgba(245, 247, 242, .9);
}

.page-products .line-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

.page-products .line-main .lede {
  max-width: 62ch;
}

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

.page-products .product-figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--deep);
  box-shadow: var(--shadow-plate);
  overflow: hidden;
}

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

.page-products .product-figure figcaption {
  font-family: var(--font-mono);
  font-size: .76rem;
  line-height: 1.6;
  color: var(--chalk);
  padding: 12px 16px;
  background: var(--paper);
  border-top: 1px solid var(--line-soft);
}

.page-products .product-line--ice .product-figure,
.page-products .product-line--deep .product-figure {
  border-color: rgba(245, 247, 242, .22);
}

.page-products .product-line--ice .product-figure figcaption,
.page-products .product-line--deep .product-figure figcaption {
  background: rgba(6, 32, 47, .72);
  color: var(--frost);
  border-top-color: rgba(245, 247, 242, .18);
}

/* 功能列表 */
.page-products .feature-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-products .feature-list li {
  padding: 16px 0;
  border-bottom: 1px solid var(--line-soft);
  display: grid;
  gap: 6px;
}

.page-products .feature-list li:last-child {
  border-bottom: none;
}

.page-products .feature-key {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: .01em;
  color: var(--ice);
}

.page-products .feature-key::before {
  content: "";
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  background: var(--ember);
}

.page-products .feature-list p {
  margin: 0;
  font-size: .95rem;
  line-height: 1.78;
  color: var(--chalk);
  max-width: 62ch;
}

.page-products .product-line--ice .feature-list,
.page-products .product-line--deep .feature-list {
  border-top-color: rgba(245, 247, 242, .26);
}

.page-products .product-line--ice .feature-list li,
.page-products .product-line--deep .feature-list li {
  border-bottom-color: rgba(245, 247, 242, .15);
}

.page-products .product-line--ice .feature-key,
.page-products .product-line--deep .feature-key {
  color: var(--aurora);
}

.page-products .product-line--ice .feature-list p,
.page-products .product-line--deep .feature-list p {
  color: rgba(245, 247, 242, .82);
}

/* ===== 订阅组合 ===== */
.page-products .mix-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 26px;
}

.page-products .mix-group {
  padding: 16px 18px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-left: 3px solid var(--mid);
}

.page-products .mix-group:nth-child(2n) {
  border-left-color: var(--ember);
}

.page-products .mix-group:nth-child(3n) {
  border-left-color: var(--aurora);
}

.page-products .mix-label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--chalk);
}

.page-products .mix-tags {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-products .mix-tags .tag {
  font-size: .82rem;
}

/* ===== 版本轨迹 ===== */
.page-products .version-track {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
  counter-reset: vstep;
}

.page-products .version-item {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
  position: relative;
}

.page-products .version-item::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--aurora), var(--ember));
  transition: width .45s ease;
}

.page-products .version-item:hover::after,
.page-products .version-item.is-in::after {
  width: 62px;
}

.page-products .version-year {
  font-family: var(--font-mono);
  font-size: .95rem;
  font-weight: 700;
  color: var(--ember);
  letter-spacing: .02em;
}

.page-products .version-title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 1.02rem;
  color: var(--ice);
}

.page-products .version-item p {
  margin: 0;
  font-size: .93rem;
  line-height: 1.76;
  color: var(--chalk);
  max-width: 58ch;
}

.page-products .platform-note {
  margin-top: 26px;
  background: var(--deep);
  color: var(--paper);
  border-left: 4px solid var(--aurora);
  padding: 20px 22px;
}

.page-products .platform-note .note-label {
  color: var(--aurora);
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.page-products .platform-note p:last-child {
  margin: 8px 0 0;
  font-size: .94rem;
  line-height: 1.8;
  color: rgba(245, 247, 242, .86);
}

/* ===== 对比表 ===== */
.page-products .compare-disclosure {
  border: 1px solid var(--line);
  background: var(--paper);
}

.page-products .compare-disclosure > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 16px 20px;
  background: var(--ice);
  color: var(--paper);
  font-family: var(--font-display);
  font-size: .98rem;
}

.page-products .compare-disclosure > summary::-webkit-details-marker {
  display: none;
}

.page-products .compare-hint {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .06em;
  color: var(--aurora);
}

.page-products .compare-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-products .compare-table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  font-size: .9rem;
}

.page-products .compare-caption {
  caption-side: top;
  text-align: left;
  padding: 14px 20px 0;
  font-size: .78rem;
  color: var(--chalk);
}

.page-products .compare-table thead th {
  background: var(--products-subscribe-bg);
  color: var(--ice);
  font-family: var(--font-display);
  font-size: .86rem;
  text-align: left;
  padding: 13px 16px;
  border-bottom: 2px solid var(--ice);
  white-space: nowrap;
}

.page-products .compare-table tbody th {
  text-align: left;
  font-weight: 700;
  color: var(--ink);
  background: rgba(31, 110, 140, .07);
  padding: 13px 16px;
  border-bottom: 1px solid var(--line-soft);
  white-space: nowrap;
}

.page-products .compare-table tbody td {
  padding: 13px 16px;
  border-bottom: 1px solid var(--line-soft);
  color: var(--chalk);
  line-height: 1.7;
  vertical-align: top;
}

.page-products .compare-table tbody tr:nth-child(2n) td {
  background: rgba(185, 198, 206, .12);
}

.page-products .compare-table tbody td:first-of-type {
  color: var(--ice);
  font-weight: 600;
}

/* ===== 收尾 ===== */
.page-products .closing-cta {
  margin-top: clamp(32px, 5vw, 56px);
  padding: clamp(24px, 4vw, 44px);
  background: var(--ice);
  color: var(--paper);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  box-shadow: var(--shadow-plate);
}

.page-products .closing-cta-text {
  flex: 1 1 320px;
  min-width: 0;
}

.page-products .closing-cta-text h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.2vw, 1.55rem);
  color: var(--paper);
}

.page-products .closing-cta-text p {
  margin: 0;
  font-size: .94rem;
  line-height: 1.8;
  color: rgba(245, 247, 242, .86);
  max-width: 58ch;
}

.page-products .closing-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-products .origin-note {
  margin: 22px 0 0;
  font-size: .88rem;
  line-height: 1.8;
  color: var(--chalk);
}

.page-products .origin-note a {
  color: var(--ice);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-products .origin-note a:hover,
.page-products .origin-note a:focus-visible {
  color: var(--ember);
}

.page-products .line-head .section-lead a {
  color: var(--ice);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-products .line-head .section-lead a:hover,
.page-products .line-head .section-lead a:focus-visible {
  color: var(--ember);
}

/* ===== 响应式 ===== */
@media (min-width: 620px) {
  .page-products .mix-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .version-item {
    grid-template-columns: 90px minmax(0, 1fr);
    gap: 20px;
  }
}

@media (min-width: 880px) {
  .page-products .product-hero-grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(280px, 1fr);
    gap: clamp(32px, 5vw, 68px);
    align-items: end;
  }

  .page-products .picker-grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(260px, .85fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-products .line-body {
    grid-template-columns: minmax(0, 1.25fr) minmax(300px, .9fr);
    gap: clamp(32px, 5vw, 72px);
    align-items: start;
  }

  .page-products .line-body--flip .line-main {
    order: 2;
  }

  .page-products .line-body--flip .line-aside {
    order: 1;
  }

  .page-products .mix-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
  }
}

@media (min-width: 1120px) {
  .page-products .hero-side {
    gap: 14px;
  }

  .page-products .product-hero h1 {
    max-width: 20ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .version-item::after,
  .page-products .product-picker .tab,
  .line-index a {
    transition: none;
  }
}