.page-products a:focus-visible,
.page-products [tabindex]:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-products .ph-sr {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 首屏海报带 ---------- */

.page-products .ph-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--deep);
  color: var(--paper);
  padding: calc(var(--header-h) + 52px) 0 60px;
}

.page-products .ph-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(to right, rgba(127, 240, 226, 0.08) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(127, 240, 226, 0.08) 1px, transparent 1px);
  background-size: 72px 72px;
  pointer-events: none;
}

.page-products .ph-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  top: -30%;
  right: -20%;
  width: 72%;
  height: 175%;
  background: linear-gradient(155deg, rgba(20, 224, 200, 0.24), rgba(20, 224, 200, 0) 58%);
  transform: rotate(8deg);
  pointer-events: none;
}

.page-products .ph-hero__shell {
  position: relative;
}

.page-products .ph-hero__crumb {
  margin-bottom: 28px;
  font-size: 13px;
  letter-spacing: 0.04em;
}

.page-products .ph-hero__crumb a,
.page-products .ph-hero__crumb span {
  color: var(--mist);
  text-decoration: none;
}

.page-products .ph-hero__crumb a:hover {
  color: var(--cyan);
}

.page-products .ph-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--graphite);
}

.page-products .ph-eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--cyan);
}

.page-products .ph-dark .ph-eyebrow {
  color: var(--mist);
}

.page-products .ph-hero__title {
  margin: 0 0 26px;
  max-width: 15ch;
  font-size: clamp(38px, 9vw, 92px);
  font-weight: 900;
  line-height: 0.96;
  letter-spacing: -0.02em;
}

.page-products .ph-hero__title span {
  display: inline-block;
  color: var(--cyan);
}

.page-products .ph-hero__lede {
  max-width: 60ch;
  margin: 0 0 34px;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(245, 248, 251, 0.82);
}

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

.page-products .ph-jump a {
  display: inline-block;
  padding: 9px 15px;
  border: 1px solid var(--rule);
  color: var(--mist);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-decoration: none;
  transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease;
}

.page-products .ph-jump a:hover,
.page-products .ph-jump a:focus-visible {
  border-color: var(--orange);
  color: var(--orange);
  background: rgba(255, 106, 31, 0.1);
}

/* ---------- 通用区块 ---------- */

.page-products .ph-section {
  padding: 58px 0;
}

.page-products .ph-dark {
  background: var(--deep);
  color: var(--paper);
}

.page-products .ph-matrix {
  background: var(--navy);
  color: var(--paper);
}

.page-products .ph-compare-section {
  background: var(--indigo);
  color: var(--paper);
}

.page-products .ph-head {
  max-width: 62ch;
  margin-bottom: 38px;
}

.page-products .ph-h2 {
  margin: 0 0 16px;
  font-size: clamp(26px, 3.8vw, 44px);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.015em;
}

.page-products .ph-head__note {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--graphite);
}

.page-products .ph-dark .ph-head__note {
  color: rgba(245, 248, 251, 0.72);
}

.page-products .ph-dark .figure__caption {
  color: rgba(245, 248, 251, 0.66);
}

.page-products .ph-feature__body p {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--graphite);
}

.page-products .ph-dark .ph-feature__body p {
  color: rgba(245, 248, 251, 0.8);
}

.page-products .ph-feature__body a {
  color: var(--orange);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-products .ph-feature__body a:hover {
  color: var(--sand);
}

/* ---------- 功能矩阵 ---------- */

.page-products .ph-matrix__scroll {
  overflow-x: auto;
  border: 1px solid var(--grid);
  background: var(--paper);
  color: var(--deep);
  -webkit-overflow-scrolling: touch;
}

.page-products .ph-matrix__table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-products .ph-matrix__table th,
.page-products .ph-matrix__table td {
  padding: 15px 18px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--grid);
}

.page-products .ph-matrix__table thead th {
  position: sticky;
  top: 0;
  background: var(--deep);
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  white-space: nowrap;
  border-bottom: 1px solid var(--cyan);
}

.page-products .ph-matrix__table thead th:first-child {
  left: 0;
  z-index: 3;
}

.page-products .ph-matrix__table tbody th {
  position: sticky;
  left: 0;
  z-index: 2;
  background: var(--paper);
  color: var(--deep);
  font-weight: 700;
  white-space: nowrap;
  border-right: 2px solid var(--cyan);
  box-shadow: 10px 0 14px -14px rgba(6, 26, 51, 0.7);
}

.page-products .ph-matrix__table tbody td {
  color: var(--graphite);
  line-height: 1.7;
}

.page-products .ph-matrix__table tbody tr:nth-child(even) td {
  background: rgba(199, 211, 222, 0.2);
}

.page-products .ph-matrix__table tbody tr:hover td {
  background: rgba(20, 224, 200, 0.12);
}

.page-products .ph-matrix__figure {
  margin: 38px 0 0;
}

/* ---------- 功能章节网格 ---------- */

.page-products .ph-feature__grid {
  display: grid;
  gap: 30px;
}

.page-products .ph-feature__media {
  margin: 0;
}

.page-products .ph-spec {
  border-top: 2px solid var(--cyan);
  padding-top: 16px;
}

.page-products .ph-spec__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--graphite);
}

.page-products .ph-dark .ph-spec__title {
  color: var(--mist);
}

.page-products .ph-spec__list {
  margin: 0;
}

.page-products .ph-spec__row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 14px;
  padding: 10px 0;
  border-bottom: 1px solid var(--grid);
  font-size: 13px;
}

.page-products .ph-dark .ph-spec__row {
  border-bottom-color: var(--rule-soft);
}

.page-products .ph-spec__row dt {
  color: var(--graphite);
  line-height: 1.6;
}

.page-products .ph-dark .ph-spec__row dt {
  color: rgba(245, 248, 251, 0.65);
}

.page-products .ph-spec__row dd {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: 0.02em;
  text-align: right;
  color: var(--deep);
}

.page-products .ph-dark .ph-spec__row dd {
  color: var(--cyan);
}

.page-products .ph-ticks {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-products .ph-ticks li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 10px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--graphite);
}

.page-products .ph-ticks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 8px;
  height: 2px;
  background: var(--orange);
}

.page-products .ph-dark .ph-ticks li {
  color: rgba(245, 248, 251, 0.78);
}

/* ---------- 阵容速查 ---------- */

.page-products .ph-lineup__visual {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-products .ph-ring {
  display: block;
  width: 132px;
  height: 132px;
}

.page-products .ph-ring__track {
  fill: none;
  stroke: var(--grid);
  stroke-width: 6;
}

.page-products .ph-ring__bar {
  fill: none;
  stroke: var(--orange);
  stroke-width: 6;
  stroke-linecap: butt;
  stroke-dasharray: 528;
  stroke-dashoffset: 528;
  transform: rotate(-90deg);
  transform-origin: 100px 100px;
}

.page-products .ph-lineup__visual.is-visible .ph-ring__bar {
  animation: ph-ring-sweep 1s cubic-bezier(0.2, 0.7, 0.3, 1) forwards;
}

@keyframes ph-ring-sweep {
  to {
    stroke-dashoffset: 132;
  }
}

.page-products .ph-ring__cap {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--graphite);
}

.page-products .ph-lineup__figure {
  margin: 0;
  max-width: 400px;
}

/* ---------- 版本对照 ---------- */

.page-products .ph-compare__figure {
  margin: 0 0 38px;
}

.page-products .ph-compare {
  display: grid;
  gap: 20px;
}

.page-products .ph-compare__col {
  border: 1px solid var(--rule);
  background: rgba(6, 26, 51, 0.38);
  padding: 24px 20px 8px;
}

.page-products .ph-compare__col--app {
  border-color: rgba(255, 106, 31, 0.42);
  background: rgba(6, 26, 51, 0.52);
}

.page-products .ph-compare__head {
  padding-bottom: 18px;
  margin-bottom: 4px;
  border-bottom: 1px solid var(--rule-soft);
}

.page-products .ph-compare__badge {
  display: inline-block;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  background: var(--cyan);
  color: var(--deep);
}

.page-products .ph-compare__col--app .ph-compare__badge {
  background: var(--orange);
  color: #07203C;
}

.page-products .ph-compare__name {
  margin: 12px 0 0;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--paper);
}

.page-products .ph-compare__rows {
  margin: 0;
}

.page-products .ph-compare__row {
  padding: 14px 0;
  border-bottom: 1px solid var(--rule-soft);
}

.page-products .ph-compare__row dt {
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-products .ph-compare__col--app .ph-compare__row dt {
  color: var(--sand);
}

.page-products .ph-compare__row dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: rgba(245, 248, 251, 0.8);
}

.page-products .ph-compare__note {
  max-width: 72ch;
  margin: 32px 0 0;
  padding-top: 20px;
  border-top: 2px solid var(--cyan);
  font-size: 15px;
  line-height: 1.8;
  color: rgba(245, 248, 251, 0.82);
}

/* ---------- 场景 ---------- */

.page-products .ph-scenes__list {
  display: grid;
  gap: 18px;
}

.page-products .ph-scene {
  border: 1px solid var(--grid);
  border-top: 3px solid var(--cyan);
  background: #ffffff;
  padding: 24px 20px;
}

.page-products .ph-scene:nth-child(2) {
  border-top-color: var(--orange);
}

.page-products .ph-scene:nth-child(3) {
  border-top-color: var(--indigo);
}

.page-products .ph-scene__no {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--graphite);
}

.page-products .ph-scene__title {
  margin: 0 0 10px;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--deep);
}

.page-products .ph-scene__desc {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--graphite);
}

.page-products .ph-scene__flow {
  margin: 0 0 14px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--graphite);
}

.page-products .ph-scene__flow span {
  display: inline-block;
  padding: 3px 9px;
  margin: 0 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  background: rgba(20, 224, 200, 0.16);
  color: var(--deep);
}

.page-products .ph-scene__why {
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid var(--grid);
  font-size: 14px;
  line-height: 1.75;
  color: var(--graphite);
}

.page-products .ph-scene__why a {
  color: var(--orange);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 收尾 ---------- */

.page-products .ph-outro {
  padding: 60px 0 74px;
}

.page-products .ph-outro__text {
  max-width: 60ch;
  margin-bottom: 34px;
}

.page-products .ph-outro__text p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(245, 248, 251, 0.78);
}

.page-products .ph-outro__links {
  display: grid;
  gap: 14px;
}

.page-products .ph-link-card {
  display: block;
  padding: 20px;
  border: 1px solid var(--rule);
  text-decoration: none;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.page-products .ph-link-card__label {
  display: block;
  margin-bottom: 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--cyan);
}

.page-products .ph-link-card__desc {
  display: block;
  font-size: 14px;
  line-height: 1.72;
  color: rgba(245, 248, 251, 0.75);
}

.page-products .ph-link-card:hover,
.page-products .ph-link-card:focus-visible {
  border-color: var(--orange);
  background: rgba(255, 106, 31, 0.09);
}

.page-products .ph-link-card:hover .ph-link-card__label {
  color: var(--sand);
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-products .ph-hero {
    padding: calc(var(--header-h) + 78px) 0 86px;
  }

  .page-products .ph-section {
    padding: 84px 0;
  }

  .page-products .ph-outro {
    padding: 84px 0 96px;
  }

  .page-products .ph-scenes__list {
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
  }

  .page-products .ph-outro__links {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 960px) {
  .page-products .ph-feature__grid {
    grid-template-columns: repeat(12, 1fr);
    column-gap: 32px;
    row-gap: 0;
    align-items: start;
  }

  .page-products .ph-feature__media {
    grid-column: 1 / span 5;
    grid-row: 1;
  }

  .page-products .ph-feature__body {
    grid-column: 6 / span 4;
    grid-row: 1;
  }

  .page-products .ph-spec {
    grid-column: 10 / span 3;
    grid-row: 1;
  }

  .page-products .ph-feature--flip .ph-feature__body {
    grid-column: 1 / span 4;
  }

  .page-products .ph-feature--flip .ph-spec {
    grid-column: 5 / span 3;
  }

  .page-products .ph-feature--flip .ph-feature__media {
    grid-column: 8 / span 5;
  }

  .page-products .ph-compare {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }

  .page-products .ph-compare__col {
    padding: 30px 26px 10px;
  }

  .page-products .ph-ring {
    width: 148px;
    height: 148px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .ph-lineup__visual.is-visible .ph-ring__bar {
    animation: none;
  }

  .page-products .ph-ring__bar {
    stroke-dashoffset: 132;
  }

  .page-products .ph-link-card,
  .page-products .ph-jump a {
    transition: none;
  }
}