.page-disclaimer {
  --doc-rail: 268px;
  --cl-rail: 96px;
  background-color: var(--paper);
  color: var(--char);
}

.page-disclaimer .breadcrumb {
  padding-block: 18px 4px;
}

.page-disclaimer .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--muted);
}

.page-disclaimer .breadcrumb__item a {
  color: var(--ink-500);
  text-decoration: none;
}

.page-disclaimer .breadcrumb__item a:hover,
.page-disclaimer .breadcrumb__item a:focus-visible {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-disclaimer .breadcrumb__sep {
  color: var(--hair);
}

/* ---------- 首屏 ---------- */

.page-disclaimer .doc-hero {
  position: relative;
  background: var(--ink-900);
  color: var(--paper);
  overflow: hidden;
}

.page-disclaimer .doc-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(91, 242, 206, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(91, 242, 206, .07) 1px, transparent 1px);
  background-size: 72px 72px;
  pointer-events: none;
}

.page-disclaimer .doc-hero__inner {
  position: relative;
  z-index: 1;
  padding-block: 44px 40px;
  display: grid;
  gap: 20px;
  max-width: 920px;
}

.page-disclaimer .doc-hero__kicker {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0;
}

.page-disclaimer .doc-hero__kicker .label {
  color: var(--cyan);
}

.page-disclaimer .doc-version {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--amber);
  border: 1px solid rgba(255, 138, 61, .5);
  padding: 2px 8px;
}

.page-disclaimer .doc-hero__title {
  margin: 0;
  font-size: clamp(40px, 8vw, 84px);
  font-weight: 250;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-disclaimer .doc-hero__lede {
  margin: 0;
  max-width: 62ch;
  font-size: 16.5px;
  line-height: 1.9;
  color: rgba(241, 240, 234, .82);
}

.page-disclaimer .doc-hero__facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px;
  margin: 6px 0 0;
  padding: 0;
  background: rgba(201, 204, 195, .22);
  border: 1px solid rgba(201, 204, 195, .22);
}

.page-disclaimer .doc-fact {
  background: var(--ink-900);
  padding: 14px 16px;
}

.page-disclaimer .doc-fact dt {
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: rgba(241, 240, 234, .55);
  margin-bottom: 8px;
}

.page-disclaimer .doc-fact dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--cyan);
}

.page-disclaimer .doc-hero__banner {
  position: relative;
  z-index: 1;
  margin: 0;
  border-top: 1px solid rgba(91, 242, 206, .28);
  line-height: 0;
}

.page-disclaimer .doc-hero__banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 1;
  object-fit: cover;
  filter: saturate(.72) contrast(1.02);
}

/* ---------- 正文骨架 ---------- */

.page-disclaimer .doc-body {
  padding-block: 40px 72px;
}

.page-disclaimer .doc-body__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

/* ---------- 条款索引 ---------- */

.page-disclaimer .doc-index {
  border: 1px solid var(--hair);
  background-color: var(--card);
  padding: 18px 16px 16px;
}

.page-disclaimer .doc-index .label {
  color: var(--ink-500);
}

.page-disclaimer .doc-index__list {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}

.page-disclaimer .doc-index__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 7px 8px;
  border-left: 2px solid transparent;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--char);
  text-decoration: none;
  transition: background-color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}

.page-disclaimer .doc-index__list a:hover,
.page-disclaimer .doc-index__list a:focus-visible {
  background-color: rgba(10, 31, 25, .06);
  border-left-color: var(--ink-500);
}

.page-disclaimer .doc-index__num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--muted);
}

.page-disclaimer .doc-index__note {
  margin: 16px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--hair);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 条款 ---------- */

.page-disclaimer .doc-clauses {
  min-width: 0;
}

.page-disclaimer .clause {
  border-top: 1px solid var(--hair);
  padding-block: 30px 36px;
  scroll-margin-top: 140px;
  transition: background-color var(--dur-base) var(--ease);
}

.page-disclaimer .clause:first-child {
  border-top: 0;
  padding-top: 6px;
}

.page-disclaimer .clause:target {
  background-color: rgba(30, 83, 67, .07);
}

.page-disclaimer .clause:target .clause__num {
  color: var(--ink-900);
}

.page-disclaimer .clause__num {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--ink-500);
}

.page-disclaimer .clause--key .clause__num::after {
  content: "";
  display: block;
  width: 26px;
  height: 2px;
  margin-top: 9px;
  background-color: var(--amber);
}

.page-disclaimer .clause__title {
  margin: 0 0 16px;
  font-size: clamp(20px, 3.4vw, 28px);
  font-weight: 600;
  line-height: 1.3;
  color: var(--char);
}

.page-disclaimer .clause__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
  max-width: 68ch;
}

.page-disclaimer .clause__list li {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 8px;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--char);
}

.page-disclaimer .clause__id {
  padding-top: 5px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: .02em;
}

.page-disclaimer .clause__text a {
  color: var(--ink-500);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-disclaimer .clause__text a:hover,
.page-disclaimer .clause__text a:focus-visible {
  color: var(--ink-900);
  background-color: rgba(91, 242, 206, .3);
}

/* ---------- 版本记录折叠 ---------- */

.page-disclaimer .doc-log {
  margin-top: 26px;
  max-width: 68ch;
  border: 1px solid var(--hair);
  background-color: var(--card);
}

.page-disclaimer .doc-log__summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
}

.page-disclaimer .doc-log__summary::-webkit-details-marker {
  display: none;
}

.page-disclaimer .doc-log__summary:focus-visible {
  outline: 2px solid var(--ink-500);
  outline-offset: -2px;
}

.page-disclaimer .doc-log__label {
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--ink-500);
}

.page-disclaimer .doc-log__hint {
  font-size: 12px;
  color: var(--muted);
}

.page-disclaimer .doc-log[open] .doc-log__hint::after {
  content: " · 已展开";
}

.page-disclaimer .doc-log__list {
  margin: 0;
  padding: 4px 16px 18px;
  list-style: none;
  display: grid;
  gap: 10px;
  border-top: 1px solid var(--hair);
}

.page-disclaimer .doc-log__list li {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 10px;
  padding-top: 10px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--char);
}

.page-disclaimer .doc-log__ver {
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 700;
  color: var(--ink-500);
}

/* ---------- 页尾指引 ---------- */

.page-disclaimer .doc-help {
  position: relative;
  background: var(--ink-700);
  color: var(--paper);
  padding-block: 44px 52px;
}

.page-disclaimer .doc-help::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), rgba(91, 242, 206, 0) 68%);
}

.page-disclaimer .doc-help__inner {
  display: grid;
  gap: 24px;
}

.page-disclaimer .doc-help .label {
  color: var(--cyan);
}

.page-disclaimer .doc-help__text {
  margin: 12px 0 0;
  max-width: 56ch;
  font-size: 15.5px;
  line-height: 1.9;
  color: rgba(241, 240, 234, .85);
}

.page-disclaimer .doc-help__text a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-disclaimer .doc-help__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-disclaimer .doc-help__links .btn--ghost {
  border-color: rgba(241, 240, 234, .38);
  color: var(--paper);
  background-color: transparent;
}

.page-disclaimer .doc-help__links .btn--ghost:hover,
.page-disclaimer .doc-help__links .btn--ghost:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
}

.page-disclaimer .doc-help__links .btn--accent {
  background-color: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink-900);
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-disclaimer .clause {
    display: grid;
    grid-template-columns: var(--cl-rail) minmax(0, 1fr);
    gap: 32px;
  }

  .page-disclaimer .clause__num {
    margin-bottom: 0;
    text-align: right;
  }

  .page-disclaimer .clause--key .clause__num::after {
    margin-left: auto;
  }
}

@media (min-width: 900px) {
  .page-disclaimer .doc-body__grid {
    grid-template-columns: var(--doc-rail) minmax(0, 1fr);
    gap: 56px;
  }

  .page-disclaimer .doc-index {
    position: sticky;
    top: 136px;
  }

  .page-disclaimer .doc-help__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 40px;
  }

  .page-disclaimer .doc-help__links {
    justify-content: flex-end;
  }
}

@media (min-width: 1080px) {
  .page-disclaimer .doc-hero__inner {
    padding-block: 64px 52px;
  }
}

@media (max-width: 480px) {
  .page-disclaimer .clause__list li {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 6px;
    font-size: 15px;
  }

  .page-disclaimer .doc-log__list li {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .page-disclaimer .doc-fact dd {
    font-size: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .clause,
  .page-disclaimer .doc-index__list a {
    transition: none;
  }
}