.page-disclaimer {
  --dc-text: rgba(243, 233, 210, 0.78);
  --dc-text-dim: rgba(243, 233, 210, 0.62);
  --dc-hair: 1px solid var(--line-dark);
}

/* ---------- 首屏 ---------- */
.page-disclaimer .usage-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(18px, 4vw, 34px) 0 clamp(26px, 5vw, 48px);
  border-bottom: var(--dc-hair);
  background:
    radial-gradient(120% 85% at 88% 0%, rgba(51, 224, 208, 0.14), transparent 58%),
    radial-gradient(80% 60% at 0% 100%, rgba(245, 166, 35, 0.10), transparent 62%),
    linear-gradient(180deg, rgba(16, 31, 51, 0.95), rgba(11, 22, 38, 0.55));
}

.page-disclaimer .usage-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--line-dark) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-dark) 1px, transparent 1px);
  background-size: 52px 52px;
  opacity: 0.22;
  -webkit-mask-image: linear-gradient(180deg, #000, transparent 88%);
  mask-image: linear-gradient(180deg, #000, transparent 88%);
}

.page-disclaimer .usage-hero .breadcrumbs {
  position: relative;
  z-index: 1;
  margin: 0 0 clamp(14px, 2.5vw, 22px);
}

.page-disclaimer .usage-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(20px, 4vw, 34px);
}

.page-disclaimer .usage-hero__text h1 {
  margin: 10px 0 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(30px, 6.4vw, 54px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-disclaimer .usage-hero__lede {
  margin: 14px 0 0;
  max-width: 60ch;
  font-size: clamp(15.5px, 2.4vw, 18px);
  line-height: 1.78;
  color: var(--dc-text);
}

.page-disclaimer .usage-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: clamp(16px, 3vw, 24px);
}

.page-disclaimer .usage-hero__media {
  position: relative;
  margin: 0;
  border: var(--dc-hair);
  background: var(--panel);
}

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

.page-disclaimer .usage-hero__media .media__caption {
  padding: 8px 12px 10px;
  font-size: 12px;
  letter-spacing: 0.04em;
  line-height: 1.6;
  color: var(--mist);
  border-top: var(--dc-hair);
}

/* ---------- 步骤轨道 ---------- */
.page-disclaimer .usage-rail {
  background: var(--ink);
  border-bottom: var(--dc-hair);
  padding: clamp(14px, 3vw, 22px) 0;
}

.page-disclaimer .step-rail {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(180px, 76%);
  gap: 1px;
  background: var(--line-dark);
  border: var(--dc-hair);
  overflow-x: auto;
  overscroll-behavior-x: contain;
}

.page-disclaimer .step-rail__item {
  display: flex;
  min-width: 0;
}

.page-disclaimer .step-rail__link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 100%;
  padding: 12px 14px 14px;
  text-decoration: none;
  background: var(--panel);
  border-left: 2px solid transparent;
  transition: background 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-disclaimer .step-rail__link:hover,
.page-disclaimer .step-rail__link:focus-visible {
  background: var(--glass);
  border-left-color: var(--cyan);
}

.page-disclaimer .step-rail__num {
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-disclaimer .step-rail__label {
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-disclaimer .step-rail__sub {
  font-size: 12px;
  line-height: 1.55;
  letter-spacing: 0.03em;
  color: var(--mist);
}

/* ---------- 章节骨架 ---------- */
.page-disclaimer .usage-block {
  padding: clamp(34px, 6vw, 68px) 0;
  border-bottom: var(--dc-hair);
  scroll-margin-top: 88px;
}

.page-disclaimer .usage-block:last-of-type {
  border-bottom: 0;
}

.page-disclaimer .usage-block__inner {
  display: grid;
  gap: clamp(18px, 3vw, 34px);
}

.page-disclaimer .usage-block__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(28px, 5vw, 40px);
  line-height: 1;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-disclaimer .usage-block h2 {
  margin: 10px 0 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(23px, 3.8vw, 34px);
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-disclaimer .usage-block__lede {
  margin: 12px 0 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--dc-text);
}

.page-disclaimer .usage-block__body {
  display: grid;
  gap: clamp(14px, 2.4vw, 20px);
  min-width: 0;
}

.page-disclaimer .usage-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--dc-text-dim);
}

.page-disclaimer .usage-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(51, 224, 208, 0.4);
}

.page-disclaimer .usage-note a:hover,
.page-disclaimer .usage-note a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 索引清单 ---------- */
.page-disclaimer .index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--paper-ink);
  border-radius: var(--radius);
}

.page-disclaimer .index-list > li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px 14px;
  padding: 16px 16px 18px;
  border-top: 1px solid var(--line-paper);
}

.page-disclaimer .index-list > li:first-child {
  border-top: 0;
}

.page-disclaimer .index-list__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  margin-top: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--paper-ink);
  border: 1px solid var(--line-paper);
  background: var(--paper-2);
}

.page-disclaimer .index-list h3 {
  margin: 0 0 5px;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--paper-ink);
}

.page-disclaimer .index-list p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(36, 26, 22, 0.82);
}

/* ---------- 版本条款卡 ---------- */
.page-disclaimer .term {
  background: var(--paper);
  color: var(--paper-ink);
  border: 1px solid var(--line-paper);
  border-radius: var(--radius);
}

.page-disclaimer .term__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-disclaimer .term__head::after {
  content: "＋";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--coral);
}

.page-disclaimer .term[open] .term__head::after {
  content: "－";
}

.page-disclaimer .term__title {
  font-family: var(--font-head);
  font-size: 16.5px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--paper-ink);
}

.page-disclaimer .term__body {
  padding: 0 16px 16px;
  border-top: 1px solid var(--line-paper);
  margin-top: -1px;
  padding-top: 12px;
}

.page-disclaimer .term__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(36, 26, 22, 0.82);
}

/* ---------- 故障排查 ---------- */
.page-disclaimer .troubles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-disclaimer .trouble {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 16px 18px;
  border: var(--dc-hair);
  border-left: 2px solid var(--amber);
  background: linear-gradient(180deg, rgba(16, 31, 51, 0.94), rgba(11, 22, 38, 0.94));
}

.page-disclaimer .trouble__num {
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1;
  color: var(--amber);
}

.page-disclaimer .trouble h3 {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-disclaimer .trouble p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--dc-text);
}

/* ---------- 收藏与共享 ---------- */
.page-disclaimer .share-split {
  display: grid;
  gap: 14px;
}

.page-disclaimer .share-card {
  padding: 18px 18px 20px;
  border-radius: var(--radius);
  min-width: 0;
}

.page-disclaimer .share-card h3 {
  margin: 8px 0 10px;
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.012em;
}

.page-disclaimer .share-card p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.78;
}

.page-disclaimer .share-card p:last-child {
  margin-bottom: 0;
}

.page-disclaimer .share-card--paper {
  background: var(--paper);
  color: rgba(36, 26, 22, 0.82);
}

.page-disclaimer .share-card--paper h3 {
  color: var(--paper-ink);
}

.page-disclaimer .share-card--paper .eyebrow {
  color: var(--paper-ink);
  opacity: 0.62;
}

.page-disclaimer .share-card--dark {
  background: var(--panel);
  border: var(--dc-hair);
  border-top: 2px solid var(--cyan);
  color: var(--dc-text);
}

.page-disclaimer .share-card--dark h3 {
  color: var(--paper);
}

.page-disclaimer .share-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-disclaimer .share-points li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.75;
}

.page-disclaimer .share-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 7px;
  height: 7px;
  background: var(--cyan);
}

/* ---------- 更新节奏 ---------- */
.page-disclaimer .rhythm {
  display: grid;
  gap: 1px;
  background: var(--line-dark);
  border: var(--dc-hair);
}

.page-disclaimer .rhythm__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  align-items: baseline;
  padding: 14px 16px;
  background: var(--panel);
  font-size: 15px;
  color: var(--dc-text);
}

.page-disclaimer .rhythm__row strong {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.04em;
  color: var(--amber);
}

.page-disclaimer .stat-row {
  display: grid;
  gap: 12px;
}

.page-disclaimer .stat {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px 18px;
  background: var(--glass);
  border: 1px solid rgba(51, 224, 208, 0.28);
}

.page-disclaimer .stat__num {
  font-family: var(--font-mono);
  font-size: clamp(30px, 5vw, 42px);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--cyan);
}

.page-disclaimer .stat__label {
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

/* ---------- 联系与纠错 ---------- */
.page-disclaimer .contact-card {
  background: var(--paper);
  color: var(--paper-ink);
  padding: clamp(18px, 4vw, 28px);
  border-top: 3px solid var(--amber);
  border-radius: var(--radius);
}

.page-disclaimer .contact-rows {
  margin: 0;
  display: grid;
  gap: 1px;
  background: var(--line-paper);
}

.page-disclaimer .contact-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 12px 0;
  background: var(--paper);
}

.page-disclaimer .contact-row dt {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: rgba(36, 26, 22, 0.55);
}

.page-disclaimer .contact-row dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15.5px;
  line-height: 1.6;
  letter-spacing: 0.01em;
  color: var(--paper-ink);
  overflow-wrap: anywhere;
}

.page-disclaimer .contact-card__note {
  margin: 16px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(36, 26, 22, 0.78);
}

.page-disclaimer .contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-disclaimer .stat-row {
    grid-template-columns: 1fr 1fr;
  }

  .page-disclaimer .contact-row {
    grid-template-columns: minmax(0, 140px) minmax(0, 1fr);
    align-items: baseline;
    gap: 12px;
  }
}

@media (min-width: 820px) {
  .page-disclaimer .share-split {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 900px) {
  .page-disclaimer .usage-hero__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    align-items: center;
  }

  .page-disclaimer .step-rail {
    grid-auto-columns: 1fr;
    overflow-x: visible;
  }

  .page-disclaimer .usage-block__inner {
    grid-template-columns: minmax(0, 0.34fr) minmax(0, 0.66fr);
    align-items: start;
  }

  .page-disclaimer .usage-block__aside {
    position: sticky;
    top: 96px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .step-rail__link {
    transition: none;
  }
}