.page-disclaimer {
  --doc-rail: 250px;
  --doc-gap: clamp(2rem, 5vw, 4.5rem);
  --doc-sec-gap: clamp(2.4rem, 5vw, 4rem);
}

/* ---------- 首屏 ---------- */
.page-disclaimer .doc-hero {
  padding: clamp(1.6rem, 4vw, 3rem) 0 clamp(2rem, 4vw, 3.2rem);
  border-bottom: 1px solid var(--line);
}

.page-disclaimer .doc-hero__inner {
  display: grid;
  gap: clamp(1.6rem, 4vw, 3rem);
}

.page-disclaimer .doc-hero__lead h1 {
  margin: 0.7rem 0 0;
  font-size: clamp(2.1rem, 5.6vw, 3.7rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--mist);
}

.page-disclaimer .doc-hero__lead .lede {
  margin: 1.1rem 0 0;
  max-width: 62ch;
}

.page-disclaimer .doc-meta {
  margin: 0;
  border-top: 1px solid var(--line);
}

.page-disclaimer .doc-meta__row {
  display: grid;
  gap: 0.2rem;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--line);
}

.page-disclaimer .doc-meta dt {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--gray);
  text-transform: uppercase;
}

.page-disclaimer .doc-meta dd {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--silver);
}

@media (min-width: 900px) {
  .page-disclaimer .doc-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
    gap: clamp(2rem, 6vw, 5rem);
  }
}

/* ---------- 双栏文档布局 ---------- */
.page-disclaimer .doc-layout {
  display: grid;
  gap: clamp(1.6rem, 4vw, 2.5rem);
  padding: clamp(2rem, 4vw, 3.4rem) 0 clamp(3rem, 6vw, 6rem);
}

@media (min-width: 1000px) {
  .page-disclaimer .doc-layout {
    grid-template-columns: var(--doc-rail) minmax(0, 1fr);
    gap: var(--doc-gap);
    align-items: start;
  }
}

/* ---------- 左侧章节索引 ---------- */
.page-disclaimer .doc-toc__title {
  margin: 0 0 0.75rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray);
}

.page-disclaimer .doc-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.35rem;
}

.page-disclaimer .doc-toc__list a {
  display: grid;
  grid-template-columns: 2.1rem minmax(0, 1fr);
  gap: 0.5rem;
  align-items: baseline;
  padding: 0.6rem 0.7rem;
  border: 1px solid var(--line);
  background: var(--graphite);
  text-decoration: none;
  color: var(--gray);
  font-size: 0.88rem;
  line-height: 1.5;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-disclaimer .doc-toc__list a:hover,
.page-disclaimer .doc-toc__list a:focus-visible {
  color: var(--mist);
  border-color: var(--cyan);
  background: var(--cyan-deep);
}

.page-disclaimer .doc-toc__num {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

@media (min-width: 560px) and (max-width: 999px) {
  .page-disclaimer .doc-toc__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-disclaimer .doc-toc {
    position: sticky;
    top: 6rem;
  }

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

  .page-disclaimer .doc-toc__list a {
    border: 0;
    border-left: 1px solid var(--line);
    background: transparent;
    clip-path: none;
    padding: 0.55rem 0.4rem 0.55rem 0.85rem;
  }

  .page-disclaimer .doc-toc__list a:hover,
  .page-disclaimer .doc-toc__list a:focus-visible {
    border-left-color: var(--orange);
    background: var(--graphite);
  }
}

/* ---------- 正文分节 ---------- */
.page-disclaimer .doc-sec {
  scroll-margin-top: 6rem;
}

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

.page-disclaimer .doc-sec__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.9rem;
  align-items: baseline;
  margin-bottom: 1.1rem;
}

.page-disclaimer .doc-sec__num {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--orange);
  padding-top: 0.3rem;
}

.page-disclaimer .doc-sec__title {
  margin: 0;
  font-size: clamp(1.25rem, 2.6vw, 1.7rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--mist);
}

.page-disclaimer .doc-sec p {
  margin: 0 0 1rem;
  max-width: 66ch;
  font-size: 0.96rem;
  line-height: 1.85;
  color: var(--silver);
}

.page-disclaimer .doc-sec p:last-child {
  margin-bottom: 0;
}

.page-disclaimer .doc-sec a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(46, 211, 206, 0.4);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-disclaimer .doc-sec a:hover {
  color: var(--mist);
  border-bottom-color: var(--mist);
}

.page-disclaimer .muted {
  color: var(--gray);
  font-size: 0.88rem;
  line-height: 1.8;
}

.page-disclaimer .mono {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
}

/* ---------- 要点列表 ---------- */
.page-disclaimer .doc-list {
  list-style: none;
  margin: 0 0 1.2rem;
  padding: 0;
}

.page-disclaimer .doc-list li {
  position: relative;
  padding: 0.85rem 0 0.85rem 1.5rem;
  border-bottom: 1px solid var(--line);
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--silver);
}

.page-disclaimer .doc-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.62rem;
  width: 0.5rem;
  height: 1px;
  background: var(--cyan);
}

.page-disclaimer .doc-list li:last-child {
  border-bottom: 0;
}

.page-disclaimer .doc-list strong {
  color: var(--mist);
  font-weight: 600;
}

.page-disclaimer .doc-num-list {
  margin: 0 0 1rem;
  padding-left: 1.3rem;
  display: grid;
  gap: 0.6rem;
  max-width: 66ch;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--silver);
}

.page-disclaimer .doc-num-list li::marker {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--cyan);
}

/* ---------- 提示条 ---------- */
.page-disclaimer .doc-callout {
  margin-top: 1.4rem;
  padding: 1rem 1.3rem;
  background: var(--graphite);
  border-left: 2px solid var(--cyan);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.page-disclaimer .doc-callout p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.8;
}

/* ---------- 图与说明并排 ---------- */
.page-disclaimer .doc-figure-row {
  display: grid;
  gap: clamp(1.2rem, 3vw, 2rem);
  margin: 1.4rem 0 0;
}

.page-disclaimer .doc-figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--graphite);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

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

.page-disclaimer .doc-figure__cap {
  padding: 0.7rem 0.95rem;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  line-height: 1.7;
  color: var(--gray);
}

.page-disclaimer .doc-side__title {
  margin: 0 0 0.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--mist);
}

.page-disclaimer .doc-code {
  display: inline-block;
  margin: 0 0 0.9rem;
  padding: 0.4rem 0.7rem;
  border: 1px solid var(--cyan);
  background: var(--cyan-deep);
  color: var(--cyan);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  line-height: 1.6;
}

@media (min-width: 760px) {
  .page-disclaimer .doc-figure-row {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    align-items: start;
  }
}

/* ---------- 折叠面板 ---------- */
.page-disclaimer .doc-fold {
  margin-top: 1.4rem;
  border: 1px solid var(--line);
  background: var(--graphite);
}

.page-disclaimer .doc-fold > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.2rem;
  cursor: pointer;
  list-style: none;
  font-size: 0.94rem;
  font-weight: 600;
  color: var(--mist);
}

.page-disclaimer .doc-fold > summary::-webkit-details-marker {
  display: none;
}

.page-disclaimer .doc-fold > summary::after {
  content: "+";
  font-family: var(--mono);
  font-size: 1.15rem;
  line-height: 1;
  color: var(--cyan);
}

.page-disclaimer .doc-fold[open] > summary::after {
  content: "–";
}

.page-disclaimer .doc-fold__body {
  padding: 1.1rem 1.2rem 1.2rem;
  border-top: 1px solid var(--line);
}

.page-disclaimer .doc-fold__body p {
  font-size: 0.92rem;
}

/* ---------- 顶部三节点 ---------- */
.page-disclaimer .doc-steps {
  list-style: none;
  margin: 1.4rem 0;
  padding: 0;
}

.page-disclaimer .doc-steps li {
  position: relative;
  padding: 0 0 1.5rem 1.9rem;
  border-left: 1px solid var(--line);
}

.page-disclaimer .doc-steps li:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-disclaimer .doc-steps li::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 0.5rem;
  width: 7px;
  height: 7px;
  background: var(--orange);
  transform: rotate(45deg);
}

.page-disclaimer .doc-steps__key {
  display: block;
  margin-bottom: 0.35rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--orange);
}

.page-disclaimer .doc-steps__text {
  margin: 0;
  max-width: 64ch;
  font-size: 0.93rem;
  line-height: 1.85;
  color: var(--silver);
}

/* ---------- 指南六章 ---------- */
.page-disclaimer .guide-chapters {
  list-style: none;
  margin: 1.4rem 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-disclaimer .guide-chapters li {
  display: grid;
  gap: 0.3rem;
  padding: 0.95rem 1.1rem;
  background: var(--graphite);
}

.page-disclaimer .guide-chapters__num {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-disclaimer .guide-chapters__name {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--mist);
}

@media (min-width: 620px) {
  .page-disclaimer .guide-chapters {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1180px) {
  .page-disclaimer .guide-chapters {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 联系块 ---------- */
.page-disclaimer .doc-contact {
  margin-top: 1.6rem;
  padding: 1.2rem 1.3rem 1.4rem;
  background: var(--mist);
  color: #0A0C0F;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.page-disclaimer .doc-contact__lead {
  margin: 0 0 0.9rem;
  font-size: 0.94rem;
  line-height: 1.8;
  color: #2A3138;
}

.page-disclaimer .doc-contact__line {
  margin: 0 0 0.25rem;
  font-size: 0.92rem;
  letter-spacing: 0.02em;
  color: #0A0C0F;
  word-break: break-word;
}

.page-disclaimer .doc-contact__note {
  margin: 0.6rem 0 1.1rem;
  font-size: 0.85rem;
  line-height: 1.7;
  color: #5A626A;
}

.page-disclaimer .doc-contact .btn--ghost {
  color: #0A0C0F;
  border-color: #B4BCC4;
}

.page-disclaimer .doc-contact .btn--ghost:hover {
  color: var(--cyan-deep);
  border-color: var(--cyan-deep);
}

/* ---------- 窄屏修正 ---------- */
@media (max-width: 480px) {
  .page-disclaimer .doc-sec__head {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.35rem;
  }

  .page-disclaimer .doc-sec__num {
    padding-top: 0;
  }

  .page-disclaimer .doc-list li {
    padding-left: 1.2rem;
  }

  .page-disclaimer .doc-contact {
    padding: 1rem 1rem 1.2rem;
  }
}

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