.page-products {
  --prod-gap: 24px;
  overflow-x: clip;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
}

/* ===== 页首深蓝标题区 ===== */
.page-products .prod-hero {
  position: relative;
  padding: 64px 0 88px;
  color: var(--white);
  background:
    radial-gradient(circle at 82% 18%, rgba(59, 130, 246, 0.28), transparent 32%),
    linear-gradient(135deg, var(--navy) 0%, #0B2545 55%, #102C4E 100%);
}
.page-products .prod-hero::before {
  content: "";
  position: absolute;
  top: 46px;
  right: 6%;
  width: 110px;
  height: 110px;
  border: 2px solid rgba(212, 160, 23, 0.55);
  transform: rotate(45deg);
  pointer-events: none;
}
.page-products .prod-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 46px;
  background: linear-gradient(135deg, var(--paper) 50%, transparent 50%);
  pointer-events: none;
}
.page-products .prod-hero .container {
  position: relative;
  z-index: 1;
}
.page-products .prod-hero .breadcrumb {
  margin-bottom: 32px;
}
.page-products .prod-hero .breadcrumb li {
  display: inline;
  color: #C7D2E0;
}
.page-products .prod-hero .breadcrumb li + li::before {
  content: "/";
  margin: 0 10px;
  color: var(--gold);
}
.page-products .prod-hero .breadcrumb a {
  color: #C7D2E0;
  text-decoration: none;
  transition: color 0.2s var(--ease);
}
.page-products .prod-hero .breadcrumb a:hover {
  color: var(--light-gold);
}
.page-products .prod-hero .breadcrumb [aria-current="page"] {
  color: var(--light-gold);
}
.page-products .prod-hero .eyebrow {
  margin-bottom: 10px;
  color: var(--light-gold);
}
.page-products .prod-hero h1 {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-size: clamp(40px, 7vw, 76px);
  line-height: 1.05;
  letter-spacing: 0.01em;
}
.page-products .prod-hero-desc {
  max-width: 58ch;
  margin: 0;
  color: #D7E0EA;
  font-size: 17px;
  line-height: 1.75;
}
.page-products .prod-hero-desc::after {
  content: "";
  display: block;
  width: 56px;
  height: 3px;
  margin-top: 26px;
  background: var(--gold);
}
.page-products .prod-hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 36px 0 0;
}
.page-products .prod-hero-stats div {
  min-width: 132px;
  padding: 12px 18px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.12);
}
.page-products .prod-hero-stats dt {
  font-size: 12px;
  color: #9FB3C8;
  letter-spacing: 0.06em;
}
.page-products .prod-hero-stats dd {
  margin: 4px 0 0;
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 28px;
  color: var(--light-gold);
}

/* ===== 通用章节分段 ===== */
.page-products .prod-section {
  padding: 64px 0;
}
.page-products .section-head {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 36px;
}
.page-products .section-index {
  flex: 0 0 auto;
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 56px;
  line-height: 1;
  color: var(--gold);
}
.page-products .section-head .section-title {
  margin: 4px 0 6px;
  font-family: var(--font-head);
  font-size: clamp(26px, 4vw, 38px);
  line-height: 1.15;
  color: var(--navy);
}
.page-products .section-desc {
  max-width: 60ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--slate);
}

/* ===== 图片容器 ===== */
.page-products .prod-figure {
  margin: 40px 0 0;
  max-width: 860px;
}
.page-products .prod-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
}
.page-products .prod-figure figcaption {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 12px;
  font-size: 13px;
  color: var(--slate);
}
.page-products .prod-figure figcaption::before {
  content: "";
  width: 20px;
  height: 2px;
  background: var(--gold);
}

/* ===== 01 版本对照工具 ===== */
.page-products .ver-control {
  position: relative;
  display: grid;
  gap: var(--prod-gap);
}
.page-products .ver-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}
.page-products .ver-index {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.page-products .ver-tab {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 18px 16px;
  background: var(--white);
  border: 1px solid #DDE4EC;
  border-left: 4px solid transparent;
  cursor: pointer;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.2s var(--ease);
}
.page-products .ver-tab:hover {
  border-top-color: var(--light-gold);
  background: #FDF9EE;
}
.page-products .ver-tab-no {
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 28px;
  color: var(--navy);
  letter-spacing: 0.02em;
}
.page-products .ver-tab-name {
  font-size: 12px;
  color: var(--slate);
  letter-spacing: 0.06em;
}
.page-products .ver-radio#ver-321:checked ~ .ver-index label[for="ver-321"],
.page-products .ver-radio#ver-300:checked ~ .ver-index label[for="ver-300"],
.page-products .ver-radio#ver-230:checked ~ .ver-index label[for="ver-230"],
.page-products .ver-radio#ver-100:checked ~ .ver-index label[for="ver-100"] {
  background: var(--paper);
  border-left-color: var(--signal-red);
}
.page-products .ver-panels {
  position: relative;
}
.page-products .ver-panel {
  display: none;
  padding: 28px 22px;
  background: var(--white);
  border: 1px solid #E2E8F0;
  box-shadow: 0 18px 40px -26px rgba(15, 23, 42, 0.35);
}
.page-products .ver-radio#ver-321:checked ~ .ver-panels #ver-p321,
.page-products .ver-radio#ver-300:checked ~ .ver-panels #ver-p300,
.page-products .ver-radio#ver-230:checked ~ .ver-panels #ver-p230,
.page-products .ver-radio#ver-100:checked ~ .ver-panels #ver-p100 {
  display: block;
  animation: vpFade 0.28s var(--ease);
}
@keyframes vpFade {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.page-products .ver-panel-label {
  margin: 0 0 4px;
  font-family: var(--font-head);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--gold);
}
.page-products .ver-panel-version {
  margin: 0 0 20px;
  font-family: var(--font-num);
  font-weight: 700;
  font-size: clamp(42px, 6vw, 58px);
  line-height: 1;
  color: var(--navy);
}
.page-products .ver-panel ul {
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
}
.page-products .ver-panel li {
  position: relative;
  padding: 9px 0 9px 22px;
  border-bottom: 1px dashed #E2E8F0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}
.page-products .ver-panel li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  width: 8px;
  height: 8px;
  background: var(--gold);
  transform: rotate(45deg);
}
.page-products .ver-panel .btn {
  margin-top: 4px;
}

/* ===== 02 版本下载中心 ===== */
.page-products .prod-download {
  position: relative;
  background: var(--navy);
  color: var(--white);
}
.page-products .prod-download::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 150px;
  height: 150px;
  background: linear-gradient(135deg, transparent 42%, rgba(212, 160, 23, 0.14));
  clip-path: polygon(100% 0, 100% 100%, 0 0);
  pointer-events: none;
}
.page-products .prod-download .section-title,
.page-products .prod-changelog .section-title {
  color: var(--white);
}
.page-products .prod-download .section-desc,
.page-products .prod-changelog .section-desc {
  color: #9FB3C8;
}
.page-products .prod-download .prod-figure img,
.page-products .prod-changelog .prod-figure img {
  border: 1px solid rgba(255, 255, 255, 0.1);
}
.page-products .prod-download .prod-figure figcaption,
.page-products .prod-changelog .prod-figure figcaption {
  color: #9FB3C8;
}

.page-products .dl-layout {
  display: grid;
  gap: 36px;
}
.page-products .dl-list {
  display: grid;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}
.page-products .dl-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px 16px;
  align-items: center;
  padding: 20px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}
.page-products .dl-ver {
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 38px;
  line-height: 1;
  color: var(--gold);
}
.page-products .dl-year {
  font-family: var(--font-num);
  font-size: 14px;
  color: #9FB3C8;
  padding: 4px 10px;
  background: rgba(255, 255, 255, 0.08);
}
.page-products .dl-desc {
  grid-column: 1 / -1;
  color: #C7D2E0;
  font-size: 14px;
}
.page-products .dl-link {
  grid-column: 1 / -1;
  justify-self: end;
  color: var(--light-gold);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.page-products .dl-link:hover {
  color: var(--white);
  border-bottom-color: var(--gold);
}

.page-products .dl-side {
  display: grid;
  gap: 24px;
  align-content: start;
}
.page-products .dl-archive {
  padding: 22px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(212, 160, 23, 0.35);
}
.page-products .dl-archive-title {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: 18px;
  color: var(--light-gold);
}
.page-products .dl-archive p {
  margin: 0 0 16px;
  color: #C7D2E0;
  font-size: 14px;
  line-height: 1.7;
}
.page-products .dl-cover {
  margin: 0;
}
.page-products .dl-cover img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
}
.page-products .dl-cover figcaption {
  margin-top: 8px;
  font-size: 12px;
  color: #9FB3C8;
}

/* ===== 03 功能特性 ===== */
.page-products .ft-grid {
  display: grid;
  gap: 20px;
}
.page-products .ft-card {
  position: relative;
  overflow: hidden;
  padding: 28px 24px 24px;
  background: var(--white);
  border: 1px solid #E2E8F0;
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.page-products .ft-card::after {
  content: "";
  position: absolute;
  top: -32px;
  right: -32px;
  width: 90px;
  height: 90px;
  background: linear-gradient(135deg, rgba(212, 160, 23, 0.18), transparent);
  transform: rotate(45deg);
  pointer-events: none;
}
.page-products .ft-card:hover {
  border-color: var(--signal-red);
  transform: translateY(-4px);
  box-shadow: 0 20px 36px -24px rgba(15, 23, 42, 0.4);
}
.page-products .ft-no {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 34px;
  line-height: 1;
  color: var(--gold);
}
.page-products .ft-card h3 {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: 20px;
  color: var(--navy);
}
.page-products .ft-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
}

/* ===== 04 更新日志 ===== */
.page-products .prod-changelog {
  position: relative;
  background: var(--navy);
  color: var(--white);
}
.page-products .prod-changelog::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 150px;
  height: 150px;
  background: linear-gradient(135deg, transparent 42%, rgba(29, 78, 216, 0.3));
  clip-path: polygon(100% 0, 100% 100%, 0 0);
  pointer-events: none;
}
.page-products .cl-accordion {
  display: grid;
  gap: 14px;
  margin-top: 36px;
}
.page-products .cl-accordion details {
  padding: 0 18px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: border-color 0.2s var(--ease);
}
.page-products .cl-accordion details[open] {
  border-color: rgba(212, 160, 23, 0.5);
}
.page-products .cl-accordion summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0;
  font-family: var(--font-head);
  font-size: 19px;
  color: var(--white);
  cursor: pointer;
  list-style: none;
}
.page-products .cl-accordion summary::-webkit-details-marker {
  display: none;
}
.page-products .cl-accordion summary::after {
  content: "+";
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 32px;
  height: 32px;
  border: 1px solid var(--gold);
  color: var(--gold);
  font-family: var(--font-num);
  font-size: 20px;
  line-height: 1;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}
.page-products .cl-accordion details[open] summary::after {
  content: "−";
  background: var(--gold);
  color: var(--navy);
}
.page-products .cl-accordion ul {
  margin: 0 0 20px;
  padding-left: 1.3em;
  color: #C7D2E0;
  font-size: 15px;
  line-height: 1.8;
}
.page-products .cl-accordion li + li {
  margin-top: 4px;
}
.page-products .cl-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}
.page-products .cl-links .btn-on-dark {
  border-color: rgba(255, 255, 255, 0.35);
}

/* ===== 桌面端增强 ===== */
@media (min-width: 640px) {
  .page-products .prod-hero-stats div {
    min-width: 148px;
  }
  .page-products .prod-section {
    padding: 80px 0;
  }
  .page-products .ft-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 880px) {
  .page-products .prod-hero {
    padding: 88px 0 120px;
  }
  .page-products .prod-hero .container {
    position: relative;
  }
  .page-products .prod-hero-stats {
    position: absolute;
    right: 0;
    bottom: 28px;
    width: 340px;
    margin: 0;
    flex-direction: column;
  }
  .page-products .prod-hero h1 {
    max-width: 9ch;
  }
  .page-products .ver-control {
    grid-template-columns: 320px minmax(0, 1fr);
    gap: 32px;
    align-items: start;
  }
  .page-products .ver-index {
    grid-template-columns: 1fr;
  }
  .page-products .ver-radio#ver-321:checked ~ .ver-index label[for="ver-321"],
  .page-products .ver-radio#ver-300:checked ~ .ver-index label[for="ver-300"],
  .page-products .ver-radio#ver-230:checked ~ .ver-index label[for="ver-230"],
  .page-products .ver-radio#ver-100:checked ~ .ver-index label[for="ver-100"] {
    transform: translateX(6px);
  }
  .page-products .ver-panel {
    padding: 36px 32px;
  }
  .page-products .dl-layout {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 48px;
    align-items: start;
  }
  .page-products .dl-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 18px;
  }
  .page-products .dl-desc {
    flex: 1 1 100%;
  }
  .page-products .dl-link {
    margin-left: auto;
  }
  .page-products .dl-archive {
    display: grid;
    grid-template-columns: 1fr 160px;
    gap: 20px;
    align-items: start;
  }
  .page-products .dl-archive-title,
  .page-products .dl-archive p {
    grid-column: 1;
  }
  .page-products .dl-cover {
    grid-column: 2;
    grid-row: 1 / span 2;
  }
  .page-products .cl-accordion {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }
  .page-products .cl-accordion details:first-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1080px) {
  .page-products .prod-section {
    padding: 96px 0;
  }
  .page-products .section-head {
    margin-bottom: 48px;
  }
  .page-products .prod-figure {
    margin-left: auto;
    margin-right: 0;
  }
  .page-products .ver-panels {
    min-height: 330px;
  }
}