.page-disclaimer {
  --u-line: var(--line);
  --u-line-strong: var(--line-strong);
  --u-surface: #FFFFFF;
  background: var(--c-paper);
  color: var(--c-ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  overflow-x: hidden;
}

/* ---------- 面包屑 ---------- */
.page-disclaimer .usage-crumbs {
  padding-top: 26px;
}
.page-disclaimer .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 14px;
  color: var(--c-slate);
}
.page-disclaimer .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin-right: 8px;
  color: var(--c-slate);
  opacity: .6;
}
.page-disclaimer .breadcrumb-current {
  color: var(--c-deep);
  font-weight: 500;
}

/* ---------- 首屏 ---------- */
.page-disclaimer .usage-hero {
  position: relative;
  padding: 34px 0 var(--gap-l);
  background:
    radial-gradient(120% 82% at 90% 0%, rgba(201, 138, 91, .20) 0%, rgba(201, 138, 91, 0) 62%),
    linear-gradient(180deg, #FFFFFF 0%, var(--c-paper) 100%);
  border-bottom: 1px solid var(--u-line);
  overflow: hidden;
}
.page-disclaimer .usage-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg,
    var(--c-wood) 0 24%,
    var(--c-sunset) 24% 48%,
    var(--c-tide) 48% 74%,
    var(--c-indigo) 74% 100%);
  opacity: .85;
}
.page-disclaimer .usage-hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap-m);
  align-items: center;
}
.page-disclaimer .eyebrow {
  margin: 0;
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--c-wood-deep);
  text-transform: uppercase;
}
.page-disclaimer .usage-hero-copy h1 {
  margin: 12px 0 18px;
  font-family: var(--font-head);
  font-size: clamp(2rem, 6.2vw, 3.4rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--c-deep);
}
.page-disclaimer .usage-hero-copy .lede {
  max-width: 38em;
  margin: 0 0 26px;
  font-size: 17px;
  line-height: 1.78;
  color: var(--c-ink);
}
.page-disclaimer .hero-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-disclaimer .hero-jump-link {
  display: inline-block;
  padding: 8px 15px;
  border: 1px solid var(--u-line-strong);
  border-radius: 999px;
  background: rgba(255, 255, 255, .78);
  color: var(--c-deep);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: background var(--ease), border-color var(--ease), transform var(--ease);
}
.page-disclaimer .hero-jump-link:hover,
.page-disclaimer .hero-jump-link:focus-visible {
  background: var(--c-wood-soft);
  border-color: var(--c-wood);
  transform: translateY(-3px);
}
.page-disclaimer .usage-hero-figure {
  margin: 0;
}
.page-disclaimer .usage-hero-figure .figure-frame {
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}
.page-disclaimer .usage-hero-figure .figure-frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-disclaimer .figure-caption {
  margin-top: 12px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--c-slate);
}

/* ---------- 通用区块 ---------- */
.page-disclaimer .usage-block {
  padding: var(--gap-l) 0;
}
.page-disclaimer .section-title {
  font-family: var(--font-head);
  font-size: clamp(1.6rem, 4.4vw, 2.35rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--c-deep);
  margin: 10px 0 14px;
}
.page-disclaimer .section-head .lede {
  max-width: 42em;
  margin: 0;
  font-size: 17px;
  line-height: 1.78;
  color: var(--c-ink);
}
.page-disclaimer .inline-link {
  color: var(--c-wood-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}
.page-disclaimer .inline-link:hover {
  color: var(--c-sunset);
}

/* ---------- 01 下载与安装 ---------- */
.page-disclaimer .usage-install {
  background: var(--c-paper);
}
.page-disclaimer .check-list {
  margin: var(--gap-m) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--u-line);
}
.page-disclaimer .check-item {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 16px;
  padding: 22px 0;
  border-bottom: 1px dashed var(--u-line);
}
.page-disclaimer .check-box {
  position: relative;
  width: 20px;
  height: 20px;
  margin-top: 5px;
  border: 1.5px solid var(--u-line-strong);
  border-radius: 3px;
  background: var(--u-surface);
  flex: none;
}
.page-disclaimer .check-box::after {
  content: "";
  position: absolute;
  inset: 4px;
  border-radius: 1px;
  background: var(--c-wood);
  opacity: .5;
}
.page-disclaimer .check-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 12px;
  margin-bottom: 8px;
}
.page-disclaimer .check-title {
  margin: 0;
  font-family: var(--font-head);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.42;
  color: var(--c-deep);
}
.page-disclaimer .check-note {
  max-width: 42em;
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
}
.page-disclaimer .check-head .tag--cut {
  flex: none;
}

/* ---------- 02 版本标注（深色分区） ---------- */
.page-disclaimer .usage-version {
  position: relative;
  background: var(--c-deep);
  padding: var(--gap-xl) 0;
}
.page-disclaimer .usage-version::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--c-wood);
}
.page-disclaimer .eyebrow--on-dark {
  color: var(--c-wood);
}
.page-disclaimer .usage-version .section-title {
  color: var(--c-paper);
}
.page-disclaimer .usage-version .section-head .lede {
  color: rgba(251, 247, 241, .78);
}
.page-disclaimer .legend-grid {
  margin-top: var(--gap-m);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}
.page-disclaimer .legend-card {
  position: relative;
  padding: 24px 22px 20px;
  border: 1px solid rgba(251, 247, 241, .22);
  border-radius: var(--radius);
  background: rgba(251, 247, 241, .06);
  transition: background var(--ease), border-color var(--ease), transform var(--ease);
}
.page-disclaimer .legend-card:hover,
.page-disclaimer .legend-card:focus-within,
.page-disclaimer .legend-card:focus-visible {
  outline: none;
  background: rgba(251, 247, 241, .12);
  border-color: var(--c-wood);
  transform: translateY(-4px);
}
.page-disclaimer .legend-bar {
  display: block;
  width: 46px;
  height: 4px;
  margin-bottom: 18px;
  border-radius: 2px;
}
.page-disclaimer .legend-bar--stable { background: var(--c-tide); }
.page-disclaimer .legend-bar--beta   { background: var(--c-wood); }
.page-disclaimer .legend-bar--fit    { background: var(--c-palm); }
.page-disclaimer .legend-bar--rec    { background: var(--c-sunset); }
.page-disclaimer .legend-name {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--c-paper);
}
.page-disclaimer .legend-desc {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.72;
  color: rgba(251, 247, 241, .78);
}
.page-disclaimer .legend-example {
  margin: 0;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  font-size: 14px;
  line-height: 1.68;
  color: rgba(251, 247, 241, .64);
  transition: max-height 320ms ease-out, opacity 240ms ease-out, margin-top 320ms ease-out;
}
.page-disclaimer .legend-card:hover .legend-example,
.page-disclaimer .legend-card:focus-within .legend-example,
.page-disclaimer .legend-card:focus-visible .legend-example {
  max-height: 220px;
  opacity: 1;
  margin-top: 16px;
}
.page-disclaimer .legend-example-label {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 7px;
  border: 1px solid rgba(251, 247, 241, .34);
  border-radius: 2px;
  font-size: 12px;
  color: var(--c-wood);
}

/* ---------- 03 账号约定 ---------- */
.page-disclaimer .usage-pact {
  background: var(--c-wood-soft);
}
.page-disclaimer .pact-grid {
  margin-top: var(--gap-m);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}
.page-disclaimer .pact-card {
  padding: 24px 22px;
  border: 1px solid var(--u-line);
  border-top: 3px solid var(--c-wood);
  border-radius: var(--radius);
  background: var(--u-surface);
  box-shadow: var(--shadow-card);
  transition: transform var(--ease), border-top-color var(--ease);
}
.page-disclaimer .pact-card:hover {
  transform: translateY(-4px);
  border-top-color: var(--c-sunset);
}
.page-disclaimer .pact-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  margin-bottom: 14px;
  border-radius: 50%;
  background: var(--c-wood-soft);
  color: var(--c-wood-deep);
  font-family: var(--font-num);
  font-size: 15px;
  font-weight: 900;
  font-variant-numeric: tabular-nums;
  letter-spacing: .01em;
}
.page-disclaimer .pact-title {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.42;
  color: var(--c-deep);
}
.page-disclaimer .pact-text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.74;
}

/* ---------- 04 内容引用 ---------- */
.page-disclaimer .usage-quote {
  background: var(--c-paper);
}
.page-disclaimer .quote-split {
  margin-top: var(--gap-m);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}
.page-disclaimer .quote-col {
  padding: 26px 24px;
  border: 1px solid var(--u-line);
  border-radius: var(--radius);
  background: var(--u-surface);
}
.page-disclaimer .quote-col--ok {
  border-top: 3px solid var(--c-palm);
}
.page-disclaimer .quote-col--warn {
  border-top: 3px solid var(--c-wine);
  background: rgba(122, 43, 58, .045);
}
.page-disclaimer .quote-col-title {
  margin: 0 0 18px;
  font-size: 14px;
  font-weight: 700;
}
.page-disclaimer .quote-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}
.page-disclaimer .quote-list li {
  position: relative;
  padding-left: 20px;
  font-size: 16px;
  line-height: 1.72;
}
.page-disclaimer .quote-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 8px;
  height: 8px;
  border-radius: 1px;
  background: var(--c-palm);
}
.page-disclaimer .quote-col--warn .quote-list li::before {
  background: var(--c-wine);
}

/* ---------- 05 出了状况 ---------- */
.page-disclaimer .usage-route {
  background:
    linear-gradient(180deg, var(--c-paper) 0%, rgba(31, 110, 140, .07) 100%);
}
.page-disclaimer .route-grid {
  margin-top: var(--gap-m);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}
.page-disclaimer .route-card {
  display: block;
  padding: 26px 24px 22px;
  border: 1px solid var(--u-line);
  border-left: 4px solid var(--c-tide);
  border-radius: var(--radius);
  background: var(--u-surface);
  color: inherit;
  text-decoration: none;
  box-shadow: var(--shadow-card);
  transition: transform var(--ease), border-left-color var(--ease), background var(--ease);
}
.page-disclaimer .route-card:hover,
.page-disclaimer .route-card:focus-visible {
  transform: translateY(-6px);
  border-left-color: var(--c-sunset);
  background: #FFFFFF;
}
.page-disclaimer .route-num {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-num);
  font-size: 34px;
  font-weight: 900;
  line-height: 1;
  letter-spacing: .01em;
  font-variant-numeric: tabular-nums;
  color: var(--c-wood);
}
.page-disclaimer .route-title {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.42;
  color: var(--c-deep);
}
.page-disclaimer .route-text {
  margin: 0 0 18px;
  font-size: 15.5px;
  line-height: 1.72;
}
.page-disclaimer .route-go {
  font-size: 14px;
  font-weight: 700;
  color: var(--c-wood-deep);
}

/* ---------- 06 说明更新 ---------- */
.page-disclaimer .usage-update {
  background: var(--c-wood-soft);
}
.page-disclaimer .update-timeline {
  margin: var(--gap-m) 0 0;
  padding: 0 0 0 22px;
  list-style: none;
  border-left: 2px solid rgba(143, 82, 32, .32);
}
.page-disclaimer .update-item {
  position: relative;
  padding-bottom: 26px;
}
.page-disclaimer .update-item:last-child {
  padding-bottom: 0;
}
.page-disclaimer .update-dot {
  position: absolute;
  left: -30px;
  top: 7px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--c-wood);
  box-shadow: 0 0 0 3px var(--c-wood-soft);
}
.page-disclaimer .update-title {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--c-deep);
}
.page-disclaimer .update-text {
  max-width: 42em;
  margin: 0;
  font-size: 16px;
  line-height: 1.74;
}
.page-disclaimer .update-note {
  max-width: 44em;
  margin: var(--gap-m) 0 0;
  padding: 18px 20px;
  border-left: 3px solid var(--c-wood);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: rgba(255, 255, 255, .72);
  font-size: 15.5px;
  line-height: 1.74;
}

/* ---------- 返回顶部 ---------- */
.page-disclaimer .to-top {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 20;
  display: inline-flex;
  align-items: center;
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--c-deep);
  color: var(--c-paper);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  box-shadow: var(--shadow-card);
  transition: background var(--ease), transform var(--ease);
}
.page-disclaimer .to-top:hover,
.page-disclaimer .to-top:focus-visible {
  background: var(--c-wood-deep);
  transform: translateY(-3px);
}

/* ---------- 平板 ---------- */
@media (min-width: 640px) {
  .page-disclaimer .pact-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-disclaimer .legend-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-disclaimer .usage-hero {
    padding: 44px 0 var(--gap-xl);
  }
  .page-disclaimer .usage-hero-inner {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
    gap: var(--gap-l);
  }
  .page-disclaimer .usage-block {
    padding: var(--gap-xl) 0;
  }
  .page-disclaimer .quote-split {
    grid-template-columns: 1.05fr 1fr;
    gap: 26px;
  }
  .page-disclaimer .route-grid {
    grid-template-columns: 1.1fr .94fr 1.06fr;
    gap: 20px;
  }
  .page-disclaimer .to-top {
    right: 26px;
    bottom: 26px;
  }
}

@media (min-width: 1080px) {
  .page-disclaimer .legend-grid {
    grid-template-columns: 1.14fr .92fr 1fr 1.08fr;
    gap: 20px;
  }
  .page-disclaimer .pact-grid {
    grid-template-columns: 1.14fr .94fr 1.06fr;
    gap: 20px;
  }
}

@media (max-width: 899px) {
  .page-disclaimer .legend-example {
    max-height: none;
    opacity: 1;
    margin-top: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .legend-card,
  .page-disclaimer .pact-card,
  .page-disclaimer .route-card,
  .page-disclaimer .hero-jump-link,
  .page-disclaimer .to-top {
    transition: none;
  }
  .page-disclaimer .legend-card:hover,
  .page-disclaimer .pact-card:hover,
  .page-disclaimer .route-card:hover,
  .page-disclaimer .hero-jump-link:hover,
  .page-disclaimer .to-top:hover {
    transform: none;
  }
}