/* ===== 功能中心 · page-products ===== */
.page-products {
  --fc-side-w: 268px;
  --fc-radius: 24px;
  --fc-gap: 20px;
  --fc-card: rgba(10, 26, 43, 0.72);
  --fc-line-soft: rgba(30, 58, 84, 0.85);
}

/* ---------- 面包屑 ---------- */
.page-products .fc-crumbs {
  padding-top: 20px;
  padding-bottom: 4px;
}

/* ---------- 首屏 ---------- */
.page-products .fc-hero {
  position: relative;
  overflow: hidden;
  margin-top: 14px;
  border-top: 1px solid var(--fc-line-soft);
  border-bottom: 1px solid var(--fc-line-soft);
  background:
    linear-gradient(112deg, rgba(18, 43, 71, 0.98) 0%, rgba(18, 43, 71, 0.62) 36%, rgba(4, 8, 15, 0) 38%),
    linear-gradient(112deg, rgba(11, 59, 56, 0.85) 0%, rgba(11, 59, 56, 0.22) 60%, rgba(4, 8, 15, 0) 62%),
    var(--bg);
}

.page-products .fc-hero::after {
  content: "";
  position: absolute;
  top: -40%;
  left: 38%;
  width: 2px;
  height: 200%;
  background: linear-gradient(180deg, rgba(255, 106, 31, 0), rgba(255, 106, 31, 0.8), rgba(255, 106, 31, 0));
  transform: rotate(16deg);
  pointer-events: none;
}

.page-products .fc-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 30px;
  padding-top: 40px;
  padding-bottom: 46px;
}

.page-products .fc-kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 14px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-products .fc-kicker-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 106, 31, 0.16);
}

.page-products .fc-hero h1 {
  margin: 0 0 18px;
  max-width: 15em;
  font-family: var(--font-display);
  font-size: clamp(30px, 7.4vw, 58px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-products .fc-lede {
  max-width: 40em;
  margin: 0 0 24px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}

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

.page-products .fc-jump a {
  display: inline-block;
  padding: 8px 15px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: rgba(4, 8, 15, 0.45);
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-products .fc-jump a:hover,
.page-products .fc-jump a:focus-visible {
  border-color: var(--orange);
  background: rgba(255, 106, 31, 0.14);
  color: var(--amber);
}

/* 首屏数据板 */
.page-products .fc-board {
  border: 1px solid rgba(41, 231, 212, 0.28);
  border-radius: var(--fc-radius);
  background: linear-gradient(165deg, rgba(18, 43, 71, 0.95), rgba(4, 8, 15, 0.92));
  padding: 20px;
  box-shadow: 0 30px 60px -40px rgba(0, 0, 0, 1);
}

.page-products .fc-board-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 14px;
  margin-bottom: 6px;
  border-bottom: 1px solid var(--fc-line-soft);
}

.page-products .fc-board-code {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 0.04em;
}

.page-products .fc-board-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .fc-board-list li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px dashed rgba(30, 58, 84, 0.7);
}

.page-products .fc-board-list li:last-child {
  border-bottom: 0;
}

.page-products .fc-board-k {
  font-size: 14px;
  color: var(--muted);
}

.page-products .fc-board-v {
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  white-space: nowrap;
}

.page-products .fc-board-foot {
  margin: 10px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--fc-line-soft);
  font-size: 13px;
  color: var(--amber);
}

/* ---------- 主布局 ---------- */
.page-products .fc-layout {
  display: grid;
  gap: 28px;
  padding-top: 36px;
  padding-bottom: 64px;
}

.page-products .fc-side {
  min-width: 0;
}

.page-products .fc-side-block {
  border: 1px solid var(--fc-line-soft);
  border-radius: var(--r-md);
  background: var(--fc-card);
  padding: 16px;
  margin-bottom: 14px;
}

.page-products .fc-side-block--wine {
  background: linear-gradient(158deg, rgba(74, 21, 38, 0.82), rgba(10, 26, 43, 0.92));
  border-color: rgba(255, 106, 31, 0.32);
}

.page-products .fc-side-title {
  margin: 0 0 12px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--amber);
}

.page-products .fc-side-note {
  margin: 0 0 12px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

.page-products .fc-side-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .fc-side-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  padding: 9px 10px;
  border-radius: 10px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.page-products .fc-side-list a::after {
  content: "→";
  font-size: 12px;
  color: var(--muted);
  transition: transform 0.2s var(--ease), color 0.2s var(--ease);
}

.page-products .fc-side-list a:hover,
.page-products .fc-side-list a:focus-visible {
  background: var(--indigo);
  color: #fff;
}

.page-products .fc-side-list a:hover::after,
.page-products .fc-side-list a:focus-visible::after {
  transform: translateX(3px);
  color: var(--orange);
}

.page-products .fc-chiprow {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}

.page-products .fc-side-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(41, 231, 212, 0.35);
  padding-bottom: 1px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-products .fc-side-link:hover,
.page-products .fc-side-link:focus-visible {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

/* ---------- 面板组 ---------- */
.page-products .fc-panels {
  display: grid;
  gap: var(--fc-gap);
  min-width: 0;
}

.page-products .fc-panel {
  border: 1px solid var(--fc-line-soft);
  border-radius: var(--fc-radius);
  background: var(--panel);
  overflow: hidden;
  box-shadow: 0 26px 50px -40px rgba(0, 0, 0, 1);
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.page-products .fc-panel:hover {
  border-color: rgba(41, 231, 212, 0.34);
}

.page-products .fc-panel > summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 18px 18px;
  cursor: pointer;
  list-style: none;
  background: linear-gradient(118deg, rgba(18, 43, 71, 0.95), rgba(10, 26, 43, 0.92));
  border-bottom: 1px solid transparent;
  transition: background 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-products .fc-panel > summary::-webkit-details-marker {
  display: none;
}

.page-products .fc-panel > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -3px;
}

.page-products .fc-panel[open] > summary {
  border-bottom-color: var(--fc-line-soft);
}

.page-products .fc-panel--green > summary {
  background: linear-gradient(118deg, rgba(11, 59, 56, 0.95), rgba(10, 26, 43, 0.95));
}

.page-products .fc-panel--wine > summary {
  background: linear-gradient(118deg, rgba(74, 21, 38, 0.92), rgba(10, 26, 43, 0.95));
}

.page-products .fc-panel-num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--orange);
  padding: 4px 9px;
  border: 1px solid rgba(255, 106, 31, 0.42);
  border-radius: var(--r-pill);
  background: rgba(255, 106, 31, 0.1);
}

.page-products .fc-panel-title {
  margin: 0;
  min-width: 0;
  font-family: var(--font-display);
  font-size: clamp(19px, 4.6vw, 26px);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-products .fc-panel-arrow {
  position: relative;
  flex: none;
  width: 28px;
  height: 28px;
  border: 1px solid var(--line);
  border-radius: 50%;
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.page-products .fc-panel-arrow::before {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  width: 7px;
  height: 7px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(-45deg);
}

.page-products .fc-panel[open] .fc-panel-arrow {
  transform: rotate(90deg);
  border-color: rgba(41, 231, 212, 0.5);
  background: rgba(41, 231, 212, 0.08);
}

.page-products .fc-panel-body {
  display: grid;
  gap: 20px;
  padding: 22px 18px 26px;
}

.page-products .fc-panel-body > p {
  margin: 0;
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}

.page-products .fc-split {
  display: grid;
  gap: 20px;
  min-width: 0;
}

.page-products .fc-col {
  min-width: 0;
}

.page-products .fc-col > p {
  margin: 0 0 16px;
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}

/* 要点列表 */
.page-products .fc-points {
  display: grid;
  gap: 11px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .fc-points li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.page-products .fc-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 9px;
  height: 2px;
  background: var(--orange);
}

.page-products .fc-points strong {
  color: var(--ink);
  font-weight: 600;
}

/* 三级路径 */
.page-products .fc-steps {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .fc-steps li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 14px 16px;
  border: 1px solid var(--fc-line-soft);
  border-left: 3px solid var(--orange);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  background: rgba(18, 43, 71, 0.42);
}

.page-products .fc-step-num {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--orange);
}

.page-products .fc-step-body {
  display: grid;
  gap: 4px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--muted);
}

.page-products .fc-step-body strong {
  font-size: 15.5px;
  color: var(--ink);
}

/* 档案字段 */
.page-products .fc-fields {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--fc-line-soft);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--fc-line-soft);
}

.page-products .fc-field {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 13px;
  background: var(--panel);
  font-size: 14px;
  transition: background 0.2s var(--ease);
}

.page-products .fc-field:hover {
  background: var(--indigo);
}

.page-products .fc-field-k {
  color: var(--ink);
  font-weight: 600;
  white-space: nowrap;
}

.page-products .fc-field-v {
  color: var(--muted);
  text-align: right;
}

/* 图片 */
.page-products .fc-figure {
  margin: 0;
  border: 1px solid var(--fc-line-soft);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--indigo);
}

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

.page-products .fc-figure--square img {
  aspect-ratio: 1 / 1;
}

.page-products .fc-figure--wide img {
  aspect-ratio: 1 / 1;
}

.page-products .fc-figure--band img {
  aspect-ratio: 2 / 1;
}

/* 折线图 */
.page-products .fc-chart {
  margin: 0;
  border: 1px solid var(--fc-line-soft);
  border-radius: var(--r-md);
  background: linear-gradient(160deg, rgba(18, 43, 71, 0.55), rgba(4, 8, 15, 0.8));
  padding: 14px 12px 10px;
}

.page-products .fc-chart svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-products .fc-chart figcaption {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin-top: 8px;
  font-size: 12.5px;
  color: var(--muted);
}

.page-products .fc-legend::before {
  content: "";
  display: inline-block;
  width: 16px;
  height: 2px;
  margin-right: 6px;
  vertical-align: middle;
}

.page-products .fc-legend--cyan::before {
  background: var(--cyan);
}

.page-products .fc-legend--orange::before {
  background: var(--orange);
}

/* 指标卡 */
.page-products .fc-metrics {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  align-content: start;
}

.page-products .fc-metric {
  padding: 14px 16px;
  border: 1px solid var(--fc-line-soft);
  border-radius: var(--r-md);
  background: rgba(18, 43, 71, 0.5);
}

.page-products .fc-metric-k {
  display: block;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-products .fc-metric-v {
  display: block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  color: var(--cyan);
}

/* 下载 */
.page-products .fc-downloads {
  display: grid;
  gap: 14px;
}

.page-products .fc-dl {
  padding: 18px;
  border: 1px solid var(--fc-line-soft);
  border-radius: var(--r-md);
  background: rgba(18, 43, 71, 0.45);
}

.page-products .fc-dl-title {
  margin: 10px 0 8px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
}

.page-products .fc-dl p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

/* 版本表 */
.page-products .fc-ver caption {
  caption-side: top;
  text-align: left;
  padding: 0 0 10px;
  font-size: 13px;
  color: var(--muted);
}

.page-products .fc-ver th[scope="row"] {
  font-family: var(--font-mono);
  color: var(--orange);
  white-space: nowrap;
}

/* ---------- 延伸入口 ---------- */
.page-products .fc-next {
  border-top: 1px solid var(--fc-line-soft);
  background:
    linear-gradient(150deg, rgba(11, 59, 56, 0.7) 0%, rgba(4, 8, 15, 0.95) 58%),
    var(--bg);
  padding: 46px 0 60px;
}

.page-products .fc-next-title {
  margin: 0 0 22px;
  font-family: var(--font-display);
  font-size: clamp(22px, 5vw, 32px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-products .fc-next-grid {
  display: grid;
  gap: 14px;
}

.page-products .fc-next-card {
  display: grid;
  gap: 8px;
  padding: 20px;
  border: 1px solid var(--fc-line-soft);
  border-radius: var(--r-lg);
  background: rgba(10, 26, 43, 0.78);
  text-decoration: none;
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.page-products .fc-next-card:hover,
.page-products .fc-next-card:focus-visible {
  transform: translateY(-3px);
  border-color: rgba(255, 106, 31, 0.55);
  box-shadow: 0 22px 40px -32px rgba(0, 0, 0, 1);
}

.page-products .fc-next-k {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
}

.page-products .fc-next-d {
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--muted);
}

.page-products .fc-next-go {
  margin-top: 4px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-products .fc-next-go::after {
  content: " →";
  transition: transform 0.2s var(--ease);
  display: inline-block;
}

.page-products .fc-next-card:hover .fc-next-go::after {
  transform: translateX(3px);
}

/* ---------- 平板以上 ---------- */
@media (min-width: 700px) {
  .page-products .fc-hero-inner {
    padding-top: 56px;
    padding-bottom: 62px;
  }

  .page-products .fc-lede {
    font-size: 17px;
  }

  .page-products .fc-side-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-products .fc-split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
  }

  .page-products .fc-split--media-first {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  }

  .page-products .fc-fields {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .fc-downloads {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .fc-next-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .fc-panel-body {
    padding: 26px 26px 30px;
  }

  .page-products .fc-panel > summary {
    padding: 22px 26px;
    gap: 18px;
  }
}

/* ---------- 桌面：粘性侧栏 + 不对称分栏 ---------- */
@media (min-width: 1024px) {
  .page-products .fc-hero-inner {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.85fr);
    align-items: end;
    gap: 48px;
    padding-top: 68px;
    padding-bottom: 76px;
  }

  .page-products .fc-board {
    padding: 24px;
  }

  .page-products .fc-layout {
    grid-template-columns: var(--fc-side-w) minmax(0, 1fr);
    gap: 36px;
    padding-top: 44px;
    padding-bottom: 80px;
  }

  .page-products .fc-side {
    position: sticky;
    top: 24px;
    align-self: start;
  }

  .page-products .fc-split {
    gap: 28px;
  }

  .page-products .fc-next-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-products .fc-panel,
  .page-products .fc-next-card,
  .page-products .fc-side-link,
  .page-products .fc-jump a {
    transition-duration: 0.01ms;
  }

  .page-products .fc-next-card:hover {
    transform: none;
  }
}
<<<END>>>