.page-products {
  --prod-ft: clamp(2rem, 5vw, 4.25rem);
  --prod-ft-2: clamp(1.75rem, 3vw, 2.75rem);
  --prod-shadow: 8px 8px 0 rgba(20, 33, 61, 0.2);
  --prod-shadow-deep: 10px 10px 0 rgba(16, 20, 24, 0.3);
  --prod-radius: 0;
  background: var(--c-cream);
  color: var(--c-black);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-products figure {
  margin: 0;
}

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

/* ===== 首屏 ===== */
.page-products .prod-hero {
  position: relative;
  background: var(--c-blue-dark);
  color: var(--c-white);
  padding: 1.5rem 0 3rem;
  border-bottom: var(--border-thick) solid var(--c-red);
  overflow: hidden;
}

.page-products .prod-hero::before {
  content: "";
  position: absolute;
  right: -12%;
  bottom: -24%;
  width: 55%;
  height: 90%;
  background: var(--c-red);
  clip-path: polygon(100% 0, 100% 100%, 20% 100%);
  opacity: 0.16;
  pointer-events: none;
}

.page-products .prod-hero::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 6px;
  background: linear-gradient(90deg, var(--c-red) 0%, var(--c-red) 18%, var(--c-yellow) 18%, var(--c-yellow) 24%, transparent 24%);
  pointer-events: none;
}

.page-products .prod-hero__breadcrumb {
  margin-bottom: 1rem;
}

.page-products .prod-hero__grid {
  display: grid;
  gap: 2rem;
  margin-top: 1.5rem;
}

.page-products .prod-hero__content {
  position: relative;
  z-index: 1;
}

.page-products .prod-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--prod-ft);
  line-height: 1.02;
  letter-spacing: -0.01em;
  margin: 0.875rem 0 1rem;
  text-transform: uppercase;
  color: var(--c-white);
}

.page-products .prod-hero__lead {
  font-size: 1.0625rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.86);
  max-width: 46ch;
  margin: 0;
}

.page-products .prod-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem;
  margin: 1.75rem 0 1.5rem;
}

.page-products .prod-hero .btn-primary {
  border: var(--border-thick) solid var(--c-blue-deep);
  box-shadow: 5px 5px 0 rgba(16, 20, 24, 0.35);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.page-products .prod-hero .btn-primary:hover {
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0 rgba(16, 20, 24, 0.4);
}

.page-products .prod-hero .btn-outline {
  border-color: var(--c-white);
  color: var(--c-white);
}

.page-products .prod-hero .btn-outline:hover {
  background: var(--c-white);
  color: var(--c-blue-dark);
}

.page-products .prod-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: rgba(255, 255, 255, 0.62);
}

.page-products .prod-hero__meta li::before {
  content: "//";
  color: var(--c-yellow);
  margin-right: 0.5rem;
}

.page-products .prod-hero__figure {
  position: relative;
}

.page-products .prod-hero__figure::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--c-red);
  clip-path: polygon(0 0, 100% 0, 100% 86%, 0 100%);
  z-index: 0;
}

.page-products .prod-hero__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  top: 0.875rem;
  left: 0.875rem;
  border: var(--border-thick) solid var(--c-yellow);
  clip-path: polygon(0 0, 100% 0, 100% 86%, 0 100%);
  z-index: 0;
  pointer-events: none;
}

.page-products .prod-hero__figure img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(1.08) contrast(1.02);
}

.page-products .prod-hero__figure figcaption {
  position: relative;
  z-index: 1;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--c-yellow);
  margin-top: 0.875rem;
  padding-left: 1rem;
  border-left: 3px solid var(--c-red);
}

/* ===== 核心功能 ===== */
.page-products .prod-features {
  background: var(--c-cream);
  padding-top: var(--space-16);
  padding-bottom: var(--space-16);
}

.page-products .prod-features__head {
  margin-bottom: var(--space-8);
}

.page-products .prod-features__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.page-products .prod-feature {
  position: relative;
  background: var(--c-white);
  border: var(--border-thick) solid var(--c-blue);
  box-shadow: var(--shadow);
  padding: var(--space-6);
  min-height: 220px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.page-products .prod-feature:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--shadow-strong);
}

.page-products .prod-feature__num {
  position: absolute;
  top: -0.625rem;
  right: 1rem;
  background: var(--c-red);
  color: var(--c-white);
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  line-height: 1;
  padding: 0.375rem 0.75rem 0.25rem;
}

.page-products .prod-feature h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  margin: 0 0 0.75rem;
  color: var(--c-blue-dark);
  text-transform: uppercase;
}

.page-products .prod-feature p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--c-gray);
}

/* ===== 设备兼容 ===== */
.page-products .prod-devices {
  background: var(--c-blue);
  color: var(--c-white);
  padding-top: var(--space-16);
  padding-bottom: var(--space-16);
}

.page-products .prod-devices__head {
  margin-bottom: var(--space-8);
}

.page-products .prod-devices__head .section-label {
  color: var(--c-yellow);
}

.page-products .prod-devices__head .section-title {
  color: var(--c-white);
}

.page-products .prod-switch {
  margin-top: var(--space-8);
}

.page-products .prod-switch__radio {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  margin: 0;
}

.page-products .prod-switch__tabs {
  display: flex;
  gap: 0.25rem;
  margin-bottom: 1.5rem;
  border-bottom: 2px solid rgba(255, 255, 255, 0.18);
  flex-wrap: wrap;
}

.page-products .prod-switch__tab {
  cursor: pointer;
  padding: 0.75rem 1.25rem;
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.6);
  border: 2px solid transparent;
  border-bottom: none;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
  user-select: none;
}

.page-products .prod-switch__tab:hover {
  color: var(--c-yellow);
}

.page-products #dev-tab:checked ~ .prod-switch__tabs label[for="dev-tab"],
.page-products #dev-phone:checked ~ .prod-switch__tabs label[for="dev-phone"],
.page-products #dev-pc:checked ~ .prod-switch__tabs label[for="dev-pc"] {
  background: var(--c-yellow);
  color: var(--c-blue-dark);
  border-color: var(--c-yellow);
}

.page-products #dev-tab:focus-visible ~ .prod-switch__tabs label[for="dev-tab"],
.page-products #dev-phone:focus-visible ~ .prod-switch__tabs label[for="dev-phone"],
.page-products #dev-pc:focus-visible ~ .prod-switch__tabs label[for="dev-pc"] {
  outline: 3px solid var(--c-yellow);
  outline-offset: 2px;
}

.page-products .prod-switch__pane {
  display: none;
  grid-template-columns: 1fr;
  gap: 1.75rem;
  align-items: center;
  background: rgba(255, 255, 255, 0.06);
  border: 2px solid rgba(255, 255, 255, 0.14);
  padding: 1.5rem;
}

.page-products #dev-tab:checked ~ .prod-switch__panes .prod-switch__pane--tab,
.page-products #dev-phone:checked ~ .prod-switch__panes .prod-switch__pane--phone,
.page-products #dev-pc:checked ~ .prod-switch__panes .prod-switch__pane--pc {
  display: grid;
}

.page-products .prod-switch__info h3 {
  font-family: var(--font-display);
  font-size: 1.625rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  margin: 0 0 0.75rem;
  color: var(--c-yellow);
  text-transform: uppercase;
}

.page-products .prod-switch__info p {
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.75;
  font-size: 0.9375rem;
  margin: 0 0 1.25rem;
}

.page-products .prod-switch__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.625rem;
}

.page-products .prod-switch__list li {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.9);
  padding-left: 1.75rem;
  position: relative;
}

.page-products .prod-switch__list li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--c-yellow);
  font-size: 1rem;
}

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

.page-products .prod-device-frame {
  border: var(--border-thick) solid var(--c-white);
  box-shadow: 8px 8px 0 rgba(16, 20, 24, 0.28);
  display: block;
}

.page-products .prod-device-frame img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* 平板 CSS 设备示意 */
.page-products .prod-device-frame--tab {
  width: 100%;
  max-width: 520px;
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, var(--c-blue-2), var(--c-blue-deep));
  border: 6px solid var(--c-white);
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 1.25rem;
  gap: 0.75rem;
}

.page-products .prod-device-frame__bar {
  display: block;
  height: 8px;
  background: var(--c-yellow);
  width: 38%;
}

.page-products .prod-device-frame__screen {
  flex: 1;
  background: var(--c-cream);
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  padding: 0.875rem;
}

.page-products .prod-device-frame__team {
  display: block;
  background: var(--c-red);
  color: var(--c-white);
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  padding: 0.5rem 0.875rem;
  align-self: flex-start;
}

.page-products .prod-device-frame__row {
  display: block;
  height: 1rem;
  background: var(--c-gray-light);
  width: 100%;
}

.page-products .prod-device-frame__row--short {
  width: 64%;
  background: var(--c-green);
}

.page-products .prod-device-frame--phone,
.page-products .prod-device-frame--pc {
  margin: 0;
}

/* ===== 下载方式 ===== */
.page-products .prod-download {
  background: var(--c-red);
  color: var(--c-white);
  position: relative;
  overflow: hidden;
  padding-top: var(--space-16);
  padding-bottom: var(--space-16);
  border-top: var(--border-thick) solid var(--c-red-deep);
}

.page-products .prod-download::before {
  content: "";
  position: absolute;
  right: -10%;
  top: -25%;
  width: 45%;
  height: 120%;
  background: var(--c-yellow);
  clip-path: polygon(100% 0, 100% 100%, 0 0);
  opacity: 0.14;
  pointer-events: none;
}

.page-products .prod-download__inner {
  position: relative;
  z-index: 1;
  max-width: 880px;
}

.page-products .prod-download__content .section-label {
  color: var(--c-yellow);
}

.page-products .prod-download__content h2 {
  font-family: var(--font-display);
  font-size: var(--prod-ft-2);
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--c-white);
  margin: 0.75rem 0 1rem;
  text-transform: uppercase;
}

.page-products .prod-download__content p {
  color: rgba(255, 255, 255, 0.94);
  max-width: 56ch;
  line-height: 1.8;
  margin-bottom: 1.75rem;
  font-size: 1rem;
}

.page-products .prod-download__content .btn-primary--lg {
  border: var(--border-thick) solid var(--c-blue-deep);
  box-shadow: 6px 6px 0 var(--c-blue-deep);
  font-size: 1.0625rem;
  padding: 0.875rem 1.75rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.page-products .prod-download__content .btn-primary--lg:hover {
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0 var(--c-blue-deep);
}

/* ===== 下载理由 / 集锦区 ===== */
.page-products .prod-highlight {
  background: var(--c-cream);
  padding-top: var(--space-24);
  padding-bottom: var(--space-24);
}

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

.page-products .prod-highlight__content .section-label,
.page-products .prod-sync__content .section-label,
.page-products .prod-data__content .section-label {
  display: inline-block;
  margin-bottom: 0.75rem;
}

.page-products .prod-highlight__content h2,
.page-products .prod-sync__content h2,
.page-products .prod-data__content h2 {
  font-family: var(--font-display);
  font-size: var(--prod-ft-2);
  font-weight: 800;
  letter-spacing: 0.01em;
  line-height: 1.15;
  margin: 0 0 1.25rem;
  color: var(--c-blue-dark);
  text-transform: uppercase;
}

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

.page-products .prod-highlight__list li {
  display: flex;
  gap: 1rem;
  padding: 1.125rem 0;
  border-bottom: 2px solid var(--c-gray-light);
  align-items: flex-start;
}

.page-products .prod-highlight__list li:last-child {
  border-bottom: none;
}

.page-products .prod-highlight__list strong {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--c-red-deep);
  min-width: 5em;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.page-products .prod-highlight__list span {
  color: var(--c-gray);
  line-height: 1.7;
}

.page-products .prod-highlight__media figure,
.page-products .prod-sync__media figure,
.page-products .prod-data__media figure {
  position: relative;
}

.page-products .prod-highlight__media figure::before,
.page-products .prod-sync__media figure::before,
.page-products .prod-data__media figure::before {
  content: "";
  position: absolute;
  inset: 0;
  border: var(--border-thick) solid var(--c-red);
  transform: translate(0.875rem, 0.875rem);
  pointer-events: none;
  z-index: 0;
}

.page-products .prod-highlight__media img,
.page-products .prod-sync__media img,
.page-products .prod-data__media img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ===== 同步区 ===== */
.page-products .prod-sync {
  background: var(--c-blue-deep);
  color: var(--c-white);
  padding-top: var(--space-24);
  padding-bottom: var(--space-24);
}

.page-products .prod-sync__content .section-label {
  color: var(--c-yellow);
}

.page-products .prod-sync__content h2 {
  color: var(--c-white);
}

.page-products .prod-sync__content p {
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.page-products .prod-sync__content .btn-outline {
  border-color: var(--c-yellow);
  color: var(--c-yellow);
}

.page-products .prod-sync__content .btn-outline:hover {
  background: var(--c-yellow);
  color: var(--c-blue-dark);
}

.page-products .prod-sync__media figure::before {
  border-color: var(--c-yellow);
}

/* ===== 数据分析区 ===== */
.page-products .prod-data {
  background: var(--c-cream);
  padding-top: var(--space-24);
  padding-bottom: var(--space-24);
}

.page-products .prod-data__content p {
  color: var(--c-gray);
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.page-products .prod-data__content .btn-outline {
  border-color: var(--c-blue);
  color: var(--c-blue-dark);
}

.page-products .prod-data__content .btn-outline:hover {
  background: var(--c-blue);
  color: var(--c-white);
}

/* ===== 常见问题 ===== */
.page-products .prod-faq {
  background: var(--c-cream);
  padding-top: var(--space-16);
  padding-bottom: calc(var(--space-24) + 2rem);
  border-top: 1px solid var(--c-gray-light);
}

.page-products .prod-faq__head {
  margin-bottom: var(--space-8);
}

.page-products .prod-faq__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.page-products .prod-faq__item {
  background: var(--c-white);
  border: var(--border-thick) solid var(--c-blue);
  box-shadow: var(--shadow);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  min-height: 180px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.page-products .prod-faq__item:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-strong);
}

.page-products .prod-faq__item h3 {
  font-family: var(--font-display);
  font-size: 1.3125rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--c-blue-dark);
  margin: 0 0 0.75rem;
  text-transform: uppercase;
}

.page-products .prod-faq__item p {
  color: var(--c-gray);
  line-height: 1.7;
  font-size: 0.9375rem;
  margin: 0 0 1.25rem;
  flex: 1;
}

.page-products .prod-faq__link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.12em;
  color: var(--c-red-deep);
  text-decoration: none;
  font-weight: 700;
  transition: color 0.2s ease, gap 0.2s ease;
}

.page-products .prod-faq__link:hover {
  color: var(--c-blue-dark);
  gap: 0.75rem;
}

.page-products .prod-faq__link span {
  font-family: var(--font-body);
  font-size: 1.125rem;
  line-height: 1;
}

/* ===== 平板及以上 ===== */
@media (min-width: 768px) {
  .page-products .prod-hero {
    padding-top: 2rem;
    padding-bottom: 4rem;
  }

  .page-products .prod-hero__grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 2.5rem;
    align-items: center;
    margin-top: 2rem;
  }

  .page-products .prod-features__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

  .page-products .prod-switch__pane {
    grid-template-columns: 1fr 1.2fr;
    padding: 2rem;
    gap: 2.5rem;
  }

  .page-products .prod-highlight__grid {
    grid-template-columns: 5fr 7fr;
    gap: 3rem;
  }

  .page-products .prod-sync__grid {
    grid-template-columns: 7fr 5fr;
    gap: 3rem;
    align-items: center;
  }

  .page-products .prod-data__grid {
    grid-template-columns: 5fr 7fr;
    gap: 3rem;
    align-items: center;
  }

  .page-products .prod-faq__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }
}

/* ===== 桌面 ===== */
@media (min-width: 1024px) {
  .page-products .prod-hero {
    padding-top: 2.5rem;
    padding-bottom: 5rem;
  }

  .page-products .prod-hero__grid {
    grid-template-columns: 7fr 5fr;
    gap: 3rem;
  }

  .page-products .prod-features__grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-products .prod-highlight__grid {
    grid-template-columns: 5fr 7fr;
    gap: 4rem;
  }

  .page-products .prod-sync__grid {
    grid-template-columns: 7fr 5fr;
    gap: 4rem;
  }

  .page-products .prod-data__grid {
    grid-template-columns: 5fr 7fr;
    gap: 4rem;
  }

  .page-products .prod-faq__grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-products .prod-features__head,
  .page-products .prod-devices__head,
  .page-products .prod-faq__head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 2rem;
  }

  .page-products .prod-features__head .section-title,
  .page-products .prod-devices__head .section-title,
  .page-products .prod-faq__head .section-title {
    font-size: clamp(2.25rem, 3vw, 3.25rem);
  }
}