/* ===== 使用条款页 · page-disclaimer ===== */

.page-disclaimer {
  --doc-sec-indent: 44px;
  --doc-line: rgba(23, 19, 15, .18);
  --doc-line-soft: rgba(23, 19, 15, .10);
  --doc-mesh: rgba(23, 19, 15, .06);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  overflow-x: clip;
}

.page-disclaimer a {
  color: var(--cyan-deep);
  text-decoration: underline;
  text-underline-offset: .18em;
  text-decoration-thickness: 1px;
}

.page-disclaimer a:hover {
  color: var(--rust);
}

.page-disclaimer a:focus-visible,
.page-disclaimer button:focus-visible,
.page-disclaimer summary:focus-visible,
.page-disclaimer .doc-sec:focus-visible {
  outline: 2px solid var(--cyan-deep);
  outline-offset: 2px;
}

/* ---------- 面包屑 ---------- */

.page-disclaimer .doc-crumb {
  background: var(--paper);
  border-bottom: 1px solid var(--doc-line-soft);
  padding-block: 14px;
}

.page-disclaimer .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--slate);
}

.page-disclaimer .breadcrumb li + li::before {
  content: "／";
  margin-right: 4px;
  color: var(--rust);
}

.page-disclaimer .breadcrumb a {
  color: var(--slate);
  text-decoration: none;
}

.page-disclaimer .breadcrumb a:hover {
  color: var(--cyan-deep);
  text-decoration: underline;
}

/* ---------- 页头 ---------- */

.page-disclaimer .doc-head {
  padding-block: 34px 30px;
  border-bottom: 1px solid var(--doc-line);
  background-color: var(--paper);
  background-image:
    linear-gradient(to right, var(--doc-mesh) 1px, transparent 1px),
    linear-gradient(to bottom, var(--doc-mesh) 1px, transparent 1px);
  background-size: 44px 44px;
}

.page-disclaimer .doc-head__grid {
  display: grid;
  gap: 26px;
}

.page-disclaimer .doc-head .eyebrow {
  margin: 0;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .14em;
  color: var(--rust);
}

.page-disclaimer .doc-head h1 {
  margin: .18em 0 .32em;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(34px, 8vw, 62px);
  line-height: 1.06;
  letter-spacing: .01em;
  color: var(--ink);
}

.page-disclaimer .doc-lede {
  margin: 0;
  max-width: 60ch;
  font-size: clamp(15.5px, 1.2vw + 11px, 18px);
  line-height: 1.8;
  color: var(--ink);
}

.page-disclaimer .doc-head__figure {
  position: relative;
  margin: 0;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: 1px solid var(--doc-line);
  background: var(--midnight);
}

.page-disclaimer .doc-head__figure img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-disclaimer .doc-head__figure .figure__caption {
  position: absolute;
  left: 0;
  bottom: 0;
  margin: 0;
  padding: 6px 10px;
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--mist);
  background: rgba(11, 9, 8, .72);
}

/* ---------- 版本刻度条 ---------- */

.page-disclaimer .version-strip {
  padding-block: 26px 22px;
  background: var(--paper-2);
  border-bottom: 1px solid var(--doc-line);
}

.page-disclaimer .version-strip__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px 24px;
}

.page-disclaimer .version-strip__title {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--slate);
}

.page-disclaimer .version-strip__num {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 0;
}

.page-disclaimer .version-strip__num .data-num {
  font-family: var(--font-mono);
  font-size: clamp(32px, 7vw, 54px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--ink);
}

.page-disclaimer .version-strip__num .data-unit {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--slate);
}

.page-disclaimer .version-strip__scale {
  display: flex;
  align-items: flex-end;
  height: 26px;
  margin-top: 18px;
  border-bottom: 1px solid var(--doc-line);
}

.page-disclaimer .version-strip__scale .tick {
  flex: 1 1 0;
  height: 9px;
  border-left: 1px solid var(--doc-line-soft);
}

.page-disclaimer .version-strip__scale .tick--major {
  height: 17px;
  border-left-color: var(--doc-line);
}

.page-disclaimer .version-strip__scale .tick--now {
  height: 26px;
  border-left: 2px solid var(--rust);
}

.page-disclaimer .version-strip__details {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--doc-line-soft);
}

.page-disclaimer .version-strip__details summary {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  color: var(--cyan-deep);
}

.page-disclaimer .version-strip__details summary::-webkit-details-marker {
  display: none;
}

.page-disclaimer .version-strip__details summary::before {
  content: "＋";
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1;
  color: var(--rust);
}

.page-disclaimer .version-strip__details[open] summary::before {
  content: "－";
}

.page-disclaimer .version-strip__list {
  display: grid;
  gap: 8px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  max-width: 74ch;
}

.page-disclaimer .version-strip__list li {
  display: grid;
  grid-template-columns: 80px minmax(0, 1fr);
  gap: 10px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--ink);
}

/* ---------- 连续画布正文 ---------- */

.page-disclaimer .doc-body {
  background: var(--paper);
}

.page-disclaimer .doc-sec {
  display: grid;
  grid-template-columns: var(--doc-sec-indent) minmax(0, 1fr);
  gap: 4px 14px;
  padding-block: 34px;
  scroll-margin-top: 24px;
}

.page-disclaimer .doc-sec + .doc-sec {
  border-top: 1px solid var(--doc-line-soft);
}

.page-disclaimer .doc-sec__num {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--rust);
}

.page-disclaimer .doc-sec__title {
  margin: 0 0 14px;
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(21px, 2.2vw + 11px, 29px);
  line-height: 1.25;
  color: var(--ink);
}

.page-disclaimer .doc-sec__col > p {
  margin: 0 0 16px;
  max-width: 70ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink);
}

.page-disclaimer .doc-list {
  margin: 0 0 4px;
  padding: 0;
  list-style: none;
  max-width: 76ch;
  border-top: 1px solid var(--doc-line-soft);
}

.page-disclaimer .doc-list li {
  display: grid;
  gap: 4px;
  padding: 12px 0;
  border-bottom: 1px solid var(--doc-line-soft);
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--ink);
}

.page-disclaimer .k {
  padding-top: 2px;
  font-family: var(--font-sans);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--slate);
}

/* ---------- 引用规则对照 ---------- */

.page-disclaimer .doc-compare {
  display: grid;
  gap: 14px;
  margin-top: 20px;
}

.page-disclaimer .doc-compare__col {
  padding: 18px 18px 20px;
  border: 1px solid var(--doc-line);
  background: var(--paper);
  transition: background .18s ease, border-color .18s ease;
}

.page-disclaimer .doc-compare__col--ok {
  border-left: 3px solid var(--cyan-deep);
}

.page-disclaimer .doc-compare__col--no {
  border-left: 3px solid var(--rust);
}

.page-disclaimer .doc-compare__col:hover,
.page-disclaimer .doc-compare__col:focus-within {
  background: var(--paper-2);
  border-color: rgba(23, 19, 15, .3);
}

.page-disclaimer .doc-compare__title {
  margin: 0 0 12px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--ink);
}

.page-disclaimer .doc-compare__col ul {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .doc-compare__col li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}

.page-disclaimer .doc-compare__col li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 9px;
  height: 1px;
  background: var(--rust);
}

.page-disclaimer .doc-compare__col--ok li::before {
  background: var(--cyan-deep);
}

/* ---------- 联系方式深色收束 ---------- */

.page-disclaimer .doc-contact {
  padding-block: 44px 56px;
  background: var(--midnight);
  color: var(--mist);
  border-top: 1px solid var(--line);
  scroll-margin-top: 24px;
}

.page-disclaimer .doc-contact__grid {
  display: grid;
  grid-template-columns: var(--doc-sec-indent) minmax(0, 1fr);
  gap: 4px 14px;
}

.page-disclaimer .doc-sec__num--dark {
  color: var(--gold);
}

.page-disclaimer .doc-sec__title--dark {
  color: var(--mist);
}

.page-disclaimer .doc-contact__body > p {
  margin: 0 0 20px;
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(251, 249, 244, .84);
}

.page-disclaimer .doc-contact a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: .18em;
}

.page-disclaimer .doc-contact a:hover {
  color: var(--gold);
}

.page-disclaimer .doc-contact a:focus-visible,
.page-disclaimer .doc-contact button:focus-visible,
.page-disclaimer .doc-contact:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-disclaimer .doc-mail {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 16px;
  margin-bottom: 20px;
  padding: 14px 16px;
  border: 1px solid var(--line-dark);
  background: rgba(18, 227, 209, .05);
}

.page-disclaimer .doc-mail__addr {
  font-family: var(--font-mono);
  font-size: clamp(13.5px, 2.4vw, 17px);
  letter-spacing: .01em;
  color: var(--cyan);
  word-break: break-all;
}

.page-disclaimer .copy-btn {
  appearance: none;
  padding: 7px 14px;
  border: 1px solid var(--cyan);
  border-radius: var(--radius);
  background: transparent;
  color: var(--cyan);
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .06em;
  cursor: pointer;
  transition: background .18s ease, color .18s ease;
}

.page-disclaimer .copy-btn:hover {
  background: var(--cyan);
  color: var(--midnight);
}

.page-disclaimer .copy-status {
  min-height: 1em;
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--gold);
}

.page-disclaimer .doc-contact__alt {
  margin: 0;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(251, 249, 244, .72);
}

/* ---------- 断点 ---------- */

@media (min-width: 620px) {
  .page-disclaimer .doc-list li {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 16px;
  }
}

@media (min-width: 820px) {
  .page-disclaimer .doc-compare {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }
}

@media (min-width: 900px) {
  .page-disclaimer .doc-head {
    padding-block: 48px 40px;
  }

  .page-disclaimer .doc-head__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: end;
    gap: 48px;
  }
}

@media (min-width: 980px) {
  .page-disclaimer .doc-sec,
  .page-disclaimer .doc-contact__grid {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 0 40px;
  }

  .page-disclaimer .doc-sec {
    padding-block: 52px;
  }

  .page-disclaimer .doc-sec__num {
    margin-top: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .doc-compare__col,
  .page-disclaimer .copy-btn {
    transition: none;
  }
}
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