/* ===== 应用中心 / SF ARENA APP CENTER ===== */
.page-products {
  --app-card-w: min(88vw, 344px);
  --app-font-mono: ui-monospace, "SF Mono", "Cascadia Mono", "Consolas", "Roboto Mono", monospace;
  --card-accent: var(--sf-green);
  overflow-x: clip;
}

.page-products [id] {
  scroll-margin-top: calc(var(--sf-header-h) + 1rem);
}

/* ---------- 首屏 Hero ---------- */
.app-hero {
  position: relative;
  padding: clamp(1.5rem, 4vw, 3rem) 0 clamp(2.5rem, 5vw, 4rem);
  overflow: clip;
  background:
    radial-gradient(1100px 520px at 88% -8%, rgba(0, 255, 148, 0.16), transparent 62%),
    radial-gradient(820px 460px at -12% 26%, rgba(0, 212, 255, 0.12), transparent 55%),
    linear-gradient(140deg, #0b1220 0%, #0d1730 46%, #10203e 100%);
}

.app-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    linear-gradient(115deg, transparent 0 60%, rgba(0, 255, 148, 0.05) 60% 60.6%, transparent 60.6% 100%),
    repeating-linear-gradient(-25deg, transparent 0 46px, rgba(0, 212, 255, 0.05) 46px 47px);
}

.app-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--sf-green) 0 20%, var(--sf-ice) 20% 45%, var(--sf-orange) 45% 70%, transparent 70%);
}

.app-hero .sf-container {
  position: relative;
  z-index: 1;
}

.app-breadcrumb {
  margin-bottom: clamp(1.25rem, 3vw, 2rem);
}

.app-hero-grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
}

@media (min-width: 1080px) {
  .app-hero-grid {
    grid-template-columns: minmax(0, 41.8fr) minmax(0, 58.2fr);
    align-items: start;
  }
}

.app-hero-copy {
  min-width: 0;
}

.app-hero-title {
  margin: 1rem 0 0;
  padding-bottom: 0.6rem;
  max-width: 12ch;
  font-family: var(--sf-font-title);
  font-size: clamp(2.1rem, 6.4vw, 4.6rem);
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--sf-silver);
  text-wrap: balance;
  background-image: linear-gradient(90deg, var(--sf-green) 0 24%, transparent 24%);
  background-repeat: no-repeat;
  background-position: left bottom;
  background-size: 100% 5px;
}

.app-hero-lead {
  margin-top: 1.25rem;
  max-width: 46ch;
  color: rgba(232, 237, 255, 0.78);
  font-size: clamp(0.95rem, 1.4vw, 1.05rem);
}

.app-hero-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  margin-top: 1.75rem;
  background: rgba(232, 237, 255, 0.08);
  border: 1px solid rgba(232, 237, 255, 0.12);
  border-radius: 1rem;
  overflow: hidden;
}

@media (min-width: 1080px) {
  .app-hero-stats {
    grid-template-columns: repeat(4, 1fr);
  }
}

.app-stat-cell {
  min-width: 0;
  background: rgba(11, 18, 32, 0.72);
  padding: 0.9rem 1rem;
}

.app-stat-label {
  font-family: var(--app-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--sf-fog);
  text-transform: uppercase;
}

.app-stat-value {
  margin: 0.25rem 0 0;
  font-family: var(--sf-font-title);
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  line-height: 1.1;
  color: var(--sf-green);
}

.app-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

/* ---------- 应用矩阵 / 横向推拉门卡片 ---------- */
.app-matrix {
  min-width: 0;
  margin-top: clamp(1.5rem, 3vw, 2.5rem);
}

@media (min-width: 1080px) {
  .app-matrix {
    margin-top: 0;
  }
}

.app-matrix-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.app-matrix-label {
  margin: 0;
  font-family: var(--sf-font-title);
  font-size: clamp(1.3rem, 2.4vw, 1.8rem);
  color: var(--sf-silver);
}

.app-matrix-hint {
  font-family: var(--app-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--sf-fog);
  white-space: nowrap;
}

.app-matrix-scroll {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: var(--app-card-w);
  gap: clamp(0.75rem, 1.6vw, 1.25rem);
  overflow-x: auto;
  overscroll-behavior-inline: contain;
  scroll-snap-type: inline mandatory;
  padding: 0.25rem 0.25rem 1.25rem;
  scrollbar-width: thin;
  scrollbar-color: rgba(0, 255, 148, 0.55) rgba(255, 255, 255, 0.06);
}

.app-matrix-scroll::-webkit-scrollbar {
  height: 5px;
}

.app-matrix-scroll::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 999px;
}

.app-matrix-scroll::-webkit-scrollbar-thumb {
  background: linear-gradient(90deg, var(--sf-green), var(--sf-ice));
  border-radius: 999px;
}

.app-matrix-scroll:focus-visible {
  outline: 2px solid var(--sf-green);
  outline-offset: 4px;
  border-radius: 0.5rem;
}

.app-card {
  --card-accent: var(--sf-green);
  position: relative;
  isolation: isolate;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: clamp(440px, 64vw, 520px);
  border: 1px solid var(--sf-border);
  border-radius: var(--sf-radius);
  overflow: hidden;
  background: var(--sf-card-bg);
  scroll-snap-align: center;
  transition: transform var(--sf-transition), box-shadow var(--sf-transition), border-color var(--sf-transition);
}

.app-card:hover {
  transform: translateY(-6px) rotate(2deg);
  border-color: rgba(255, 255, 255, 0.32);
  box-shadow: 0 22px 50px rgba(0, 0, 0, 0.35);
}

.app-card--center {
  --card-accent: var(--sf-green);
}

.app-card--member {
  --card-accent: var(--sf-orange);
}

.app-card--browser {
  --card-accent: var(--sf-ice);
}

.app-card-bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 22%;
}

.app-card::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgba(5, 8, 15, 0.1) 0%, rgba(5, 8, 15, 0.55) 42%, rgba(5, 8, 15, 0.94) 100%);
}

.app-card::after {
  content: "";
  position: absolute;
  z-index: -1;
  top: 27%;
  left: -18%;
  width: 136%;
  height: 5px;
  background: linear-gradient(90deg, transparent, var(--card-accent) 28%, var(--card-accent) 62%, transparent);
  transform: rotate(-12deg);
}

.app-card-corner {
  position: absolute;
  top: 0;
  right: 0;
  z-index: 0;
  width: 58px;
  height: 58px;
  clip-path: polygon(0 0, 100% 0, 100% 100%);
  background: linear-gradient(225deg, rgba(0, 255, 148, 0.2), rgba(5, 8, 15, 0.6) 58%);
  pointer-events: none;
}

.app-card--member .app-card-corner {
  background: linear-gradient(225deg, rgba(255, 87, 34, 0.24), rgba(5, 8, 15, 0.6) 58%);
}

.app-card--browser .app-card-corner {
  background: linear-gradient(225deg, rgba(0, 212, 255, 0.24), rgba(5, 8, 15, 0.6) 58%);
}

.app-card-body {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.65rem;
  padding: 1.25rem;
}

.app-card-idx {
  margin: 0;
  font-family: var(--app-font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--card-accent);
  text-transform: uppercase;
}

.app-card-title {
  margin: 0;
  font-family: var(--sf-font-title);
  font-size: clamp(1.35rem, 2vw, 1.7rem);
  line-height: 1.12;
  color: var(--sf-silver);
}

.app-card-text {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.65;
  color: rgba(232, 237, 255, 0.78);
}

.app-card-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1rem;
  font-family: var(--app-font-mono);
  font-size: 0.78rem;
  color: var(--sf-fog);
}

.app-card-stats strong {
  color: var(--sf-silver);
  font-size: 0.9rem;
}

.app-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0.25rem 0 0.35rem;
}

.app-card-tag {
  font-family: var(--app-font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  color: var(--card-accent);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-color: color-mix(in srgb, var(--card-accent) 55%, transparent);
  background: rgba(5, 8, 15, 0.35);
  border-radius: 999px;
  padding: 0.22rem 0.55rem;
}

/* ---------- 内容分区通用 ---------- */
.app-detail {
  padding: clamp(2.5rem, 6vw, 5rem) 0;
}

.app-detail--member {
  background: linear-gradient(180deg, rgba(30, 42, 90, 0.22), rgba(11, 18, 32, 0.4));
}

.app-detail--browser {
  background: radial-gradient(760px 360px at 80% 8%, rgba(0, 212, 255, 0.1), transparent 60%);
}

.app-section-head {
  display: grid;
  gap: 0.9rem;
  margin-bottom: clamp(1.75rem, 3.4vw, 2.75rem);
}

@media (min-width: 880px) {
  .app-section-head {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .app-section-idx {
    grid-row: span 2;
  }

  .app-section-desc {
    grid-column: 2;
    max-width: 72ch;
  }
}

.app-section-idx {
  width: fit-content;
  border: 1px solid rgba(0, 255, 148, 0.3);
  border-radius: 999px;
  padding: 0.3rem 0.75rem;
  font-family: var(--app-font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  color: var(--sf-green);
}

.app-section-head-copy {
  min-width: 0;
}

.app-section-title {
  margin: 0.15rem 0 0;
  font-family: var(--sf-font-title);
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.02;
  color: var(--sf-silver);
}

.app-section-desc {
  margin: 0;
  max-width: 62ch;
  font-size: 0.95rem;
  line-height: 1.75;
  color: rgba(232, 237, 255, 0.75);
}

/* ---------- 赛事中心：数据特性卡 ---------- */
.app-feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 620px) {
  .app-feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1080px) {
  .app-feature-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.app-feature-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--sf-border);
  border-radius: 1rem;
  padding: 1.25rem 1.25rem 1.35rem;
  background: linear-gradient(150deg, rgba(30, 42, 90, 0.42), rgba(11, 18, 32, 0.55));
}

.app-feature-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--sf-green), var(--sf-ice));
  opacity: 0.85;
}

.app-feature-card::after {
  content: "";
  position: absolute;
  right: -36px;
  top: -36px;
  width: 96px;
  height: 96px;
  background: radial-gradient(circle, rgba(0, 255, 148, 0.14), transparent 68%);
}

.app-feature-num {
  font-family: var(--app-font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  color: var(--sf-fog);
}

.app-feature-value {
  margin: 0.5rem 0 0.15rem;
  font-family: var(--sf-font-title);
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  line-height: 1.05;
  color: var(--sf-silver);
}

.app-feature-name {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  color: var(--sf-green);
}

.app-feature-text {
  margin: 0.5rem 0 0;
  font-size: 0.85rem;
  line-height: 1.65;
  color: rgba(232, 237, 255, 0.7);
}

.app-mini-note {
  margin-top: 1.5rem;
  padding: 1rem 1.1rem;
  border: 1px dashed rgba(0, 212, 255, 0.28);
  border-radius: 0.85rem;
  background: rgba(0, 212, 255, 0.05);
  font-size: 0.88rem;
  line-height: 1.7;
  color: rgba(232, 237, 255, 0.75);
}

.app-mini-note a {
  color: var(--sf-ice);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 212, 255, 0.4);
}

/* ---------- 会员专区：步骤与数据 ---------- */
.app-step-grid {
  display: grid;
  gap: 1rem;
  margin-bottom: 1.75rem;
}

@media (min-width: 720px) {
  .app-step-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.app-step-item {
  border: 1px solid var(--sf-border);
  border-left: 3px solid var(--sf-orange);
  border-radius: 0 1rem 1rem 0;
  padding: 1.1rem 1.2rem;
  background: rgba(11, 18, 32, 0.5);
}

.app-step-idx {
  font-family: var(--app-font-mono);
  font-size: 0.73rem;
  letter-spacing: 0.12em;
  color: var(--sf-orange);
}

.app-step-title {
  margin: 0.4rem 0 0.35rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--sf-silver);
}

.app-step-text {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.65;
  color: var(--sf-fog);
}

.app-member-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--sf-border);
  border-radius: 1rem;
  background: rgba(232, 237, 255, 0.08);
  margin-bottom: 1.25rem;
}

@media (min-width: 720px) {
  .app-member-stats {
    grid-template-columns: repeat(4, 1fr);
  }
}

.app-member-stat {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding: 1rem;
  background: rgba(5, 8, 15, 0.4);
}

.app-member-stat-value {
  font-family: var(--sf-font-title);
  font-size: clamp(1.5rem, 2.4vw, 2rem);
  color: var(--sf-orange);
}

.app-member-stat-label {
  font-family: var(--app-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--sf-fog);
  text-transform: uppercase;
}

.app-notify-box {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.85rem;
  padding: 1rem 1.2rem;
  border: 1px solid rgba(0, 255, 148, 0.22);
  border-radius: 1rem;
  background: linear-gradient(90deg, rgba(0, 255, 148, 0.08), rgba(11, 18, 32, 0.3));
}

.app-notify-box p {
  flex: 1 1 260px;
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.7;
  color: rgba(232, 237, 255, 0.8);
}

/* ---------- 数据浏览器 ---------- */
.app-browser-grid {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 900px) {
  .app-browser-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: stretch;
  }
}

.app-browser-list,
.app-browser-aside {
  min-width: 0;
}

.app-browser-features {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.75rem;
}

.app-browser-features li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.25rem;
  border-bottom: 1px solid rgba(232, 237, 255, 0.1);
  padding-bottom: 0.75rem;
}

@media (max-width: 559px) {
  .app-browser-features li {
    flex-direction: column;
    gap: 0.2rem;
  }

  .app-browser-features span {
    text-align: left;
  }
}

.app-browser-features strong {
  flex-shrink: 0;
  font-size: 0.95rem;
  color: var(--sf-silver);
}

.app-browser-features span {
  font-size: 0.84rem;
  line-height: 1.55;
  text-align: right;
  color: var(--sf-fog);
}

.app-browser-note {
  margin: 1.25rem 0 0;
  padding-top: 1rem;
  border-top: 1px solid var(--sf-border);
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--sf-fog);
}

.app-browser-aside {
  display: grid;
  align-content: start;
  gap: 1rem;
  padding: 1.25rem;
  border: 1px solid var(--sf-border);
  border-radius: 1rem;
  background: linear-gradient(160deg, rgba(30, 42, 90, 0.4), rgba(5, 8, 15, 0.55));
}

.app-browser-metric {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  border-left: 3px solid var(--sf-ice);
  padding-left: 0.85rem;
}

.app-browser-metric-value {
  font-family: var(--sf-font-title);
  font-size: clamp(1.6rem, 2.6vw, 2.2rem);
  color: var(--sf-ice);
}

.app-browser-metric-label {
  font-family: var(--app-font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--sf-fog);
  text-transform: uppercase;
}

.app-browser-chart {
  width: 100%;
  height: auto;
  margin-top: 0.5rem;
  filter: drop-shadow(0 0 10px rgba(0, 255, 148, 0.25));
}

.app-browser-caption {
  margin: 0;
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--sf-fog);
}

/* ---------- 下载与系统支持 ---------- */
.app-download {
  padding: clamp(2.5rem, 6vw, 5rem) 0;
  background:
    radial-gradient(900px 420px at 10% 30%, rgba(0, 255, 148, 0.09), transparent 60%),
    linear-gradient(180deg, rgba(30, 42, 90, 0.2), rgba(5, 8, 15, 0.35));
}

.app-device-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 640px) {
  .app-device-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1080px) {
  .app-device-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.app-device-card {
  position: relative;
  overflow: hidden;
  padding: 1.2rem 1.25rem 1.3rem;
  border: 1px solid var(--sf-border);
  border-radius: 1rem;
  background: linear-gradient(150deg, rgba(30, 42, 90, 0.55), rgba(11, 18, 32, 0.7));
  transition: transform var(--sf-transition), border-color var(--sf-transition);
}

.app-device-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 255, 148, 0.4);
}

.app-device-card::after {
  content: "";
  position: absolute;
  right: -34px;
  top: -34px;
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 255, 148, 0.16), transparent 70%);
  pointer-events: none;
}

.app-device-icon {
  display: block;
  width: 40px;
  height: 40px;
  color: var(--sf-green);
}

.app-device-card--ios .app-device-icon {
  color: var(--sf-ice);
}

.app-device-card--mini .app-device-icon {
  color: var(--sf-orange);
}

.app-device-name {
  margin: 0.85rem 0 0.2rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--sf-silver);
}

.app-device-req {
  margin: 0;
  font-family: var(--app-font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--sf-ice);
}

.app-device-desc {
  margin: 0.55rem 0 0;
  font-size: 0.85rem;
  line-height: 1.65;
  color: var(--sf-fog);
}

.app-device-figure {
  position: relative;
  margin: 1.75rem 0 0;
}

.app-device-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--sf-border);
  border-radius: 1.25rem;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.3);
}

.app-device-figure figcaption {
  margin-top: 0.75rem;
  text-align: center;
  font-family: var(--app-font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--sf-fog);
}

.app-trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.25rem;
}

.app-trust-item {
  border: 1px solid rgba(0, 212, 255, 0.28);
  border-radius: 999px;
  padding: 0.45rem 0.8rem;
  background: rgba(0, 212, 255, 0.06);
  font-family: var(--app-font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--sf-ice);
}

.app-trust-item--green {
  border-color: rgba(0, 255, 148, 0.3);
  background: rgba(0, 255, 148, 0.06);
  color: var(--sf-green);
}

/* ---------- 版本演进 ---------- */
.app-version {
  padding: clamp(2.5rem, 6vw, 5rem) 0;
  background:
    radial-gradient(760px 360px at 90% 20%, rgba(255, 87, 34, 0.08), transparent 60%),
    linear-gradient(180deg, rgba(5, 8, 15, 0.2), rgba(30, 42, 90, 0.16));
}

.app-version-grid {
  display: grid;
  gap: 2rem;
  margin-top: 1rem;
}

@media (min-width: 960px) {
  .app-version-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
  }
}

.app-timeline {
  position: relative;
  margin: 0;
  padding-left: 1.75rem;
}

.app-timeline::before {
  content: "";
  position: absolute;
  left: 0.45rem;
  top: 0.4rem;
  bottom: 0.4rem;
  width: 2px;
  background: linear-gradient(180deg, var(--sf-green), var(--sf-ice) 55%, var(--sf-orange));
  opacity: 0.8;
}

.app-ver-item {
  position: relative;
  margin-bottom: 1rem;
  border: 1px solid var(--sf-border);
  border-radius: 1rem;
  background: rgba(30, 42, 90, 0.32);
}

.app-ver-item::before {
  content: "";
  position: absolute;
  left: -1.75rem;
  top: 1.15rem;
  width: 0.9rem;
  height: 0.9rem;
  border: 3px solid var(--sf-green);
  border-radius: 50%;
  background: var(--sf-navy);
}

.app-ver-item:nth-child(2)::before {
  border-color: var(--sf-ice);
}

.app-ver-item:nth-child(3)::before {
  border-color: var(--sf-orange);
}

.app-ver-item summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem 0.85rem;
  padding: 1rem 1.15rem;
  list-style: none;
  cursor: pointer;
}

.app-ver-item summary::-webkit-details-marker {
  display: none;
}

.app-ver-item summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--app-font-mono);
  font-size: 1.1rem;
  color: var(--sf-fog);
  transition: transform var(--sf-transition);
}

.app-ver-item[open] summary::after {
  transform: rotate(45deg);
  color: var(--sf-green);
}

.app-ver-item summary:focus-visible {
  outline: 2px solid var(--sf-green);
  outline-offset: -2px;
  border-radius: 0.9rem;
}

.ver-no {
  font-family: var(--sf-font-title);
  font-size: 1.35rem;
  color: var(--sf-silver);
}

.ver-state {
  border: 1px solid rgba(0, 255, 148, 0.3);
  border-radius: 999px;
  padding: 0.2rem 0.6rem;
  font-family: var(--app-font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--sf-green);
}

.app-ver-item:nth-child(2) .ver-state {
  border-color: rgba(0, 212, 255, 0.3);
  color: var(--sf-ice);
}

.app-ver-item:nth-child(3) .ver-state {
  border-color: rgba(255, 87, 34, 0.35);
  color: var(--sf-orange);
}

.ver-desc {
  margin: 0;
  padding: 0 1.15rem 1.1rem;
  font-size: 0.86rem;
  line-height: 1.7;
  color: rgba(232, 237, 255, 0.72);
}

.app-version-image {
  min-width: 0;
  margin: 0;
}

.app-version-image img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--sf-border);
  border-radius: 1.25rem;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
}

.app-version-image figcaption {
  margin-top: 0.7rem;
  text-align: right;
  font-family: var(--app-font-mono);
  font-size: 0.76rem;
  color: var(--sf-fog);
}

/* ---------- 相关页面 ---------- */
.app-rel {
  padding: clamp(2rem, 5vw, 3.5rem) 0;
  border-top: 1px solid var(--sf-border);
  background: linear-gradient(180deg, rgba(30, 42, 90, 0.25), rgba(5, 8, 15, 0.5));
}

.app-rel-title {
  margin: 0 0 1.25rem;
  font-family: var(--sf-font-title);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  color: var(--sf-silver);
}

.app-rel-grid {
  display: grid;
  gap: 0.85rem;
}

@media (min-width: 720px) {
  .app-rel-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.app-rel-card {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1.05rem 1.15rem;
  border: 1px solid var(--sf-border);
  border-radius: 0.9rem;
  background: rgba(30, 42, 90, 0.35);
  color: var(--sf-silver);
  text-decoration: none;
  font-size: 0.95rem;
  transition: border-color var(--sf-transition), transform var(--sf-transition);
}

.app-rel-card small {
  font-family: var(--app-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--sf-green);
  text-transform: uppercase;
}

.app-rel-card:hover,
.app-rel-card:focus-visible {
  border-color: rgba(0, 255, 148, 0.45);
  transform: translateY(-3px);
}

.app-rel-card:focus-visible,
.app-card a:focus-visible,
.app-hero a:focus-visible,
.app-mini-note a:focus-visible {
  outline: 2px solid var(--sf-green);
  outline-offset: 3px;
  border-radius: 0.3rem;
}