.page-disclaimer {
  --dcut: 16px;
  background: var(--ink-900);
  color: var(--text);
}

/* ── 首屏 ────────────────────────────── */
.page-disclaimer .usage-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(44px, 7vw, 88px) 0 clamp(36px, 5vw, 64px);
  border-bottom: 1px solid var(--ink-700);
}

.page-disclaimer .usage-hero__grid {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.15;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.95), rgba(0, 0, 0, 0) 88%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.95), rgba(0, 0, 0, 0) 88%);
}

.page-disclaimer .usage-hero__inner {
  position: relative;
  z-index: 1;
}

.page-disclaimer .usage-hero .breadcrumb {
  color: var(--text-soft);
}

.page-disclaimer .usage-hero__eyebrow {
  margin: clamp(20px, 3vw, 34px) 0 12px;
  font-size: 12px;
  letter-spacing: 0.22em;
  font-family: var(--font-num);
  color: var(--cyan);
}

.page-disclaimer .usage-hero h1 {
  margin: 0 0 20px;
  max-width: 20ch;
  font-size: clamp(30px, 5.4vw, 58px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-disclaimer .usage-hero__lead {
  margin: 0;
  max-width: 66ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--text);
}

.page-disclaimer .usage-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px clamp(18px, 3vw, 36px);
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .usage-hero__meta li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-disclaimer .usage-hero__num {
  font-family: var(--font-num);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  color: var(--cyan);
  line-height: 1;
}

.page-disclaimer .usage-hero__cap {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

/* ── 条款索引条 ─────────────────────── */
.page-disclaimer .usage-index {
  border-bottom: 1px solid var(--ink-700);
  background: var(--ink-800);
}

.page-disclaimer .usage-index__inner {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 12px 0;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-disclaimer .usage-index__inner::-webkit-scrollbar {
  display: none;
}

.page-disclaimer .usage-index a {
  flex: 0 0 auto;
  padding: 8px 14px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--text-dim);
  text-decoration: none;
  border: 1px solid var(--ink-700);
  background: var(--ink-900);
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 100%, 8px 100%);
  transition: color var(--dur-fast) var(--ease), background-color var(--dur-fast) var(--ease),
    border-color var(--dur-fast) var(--ease);
}

.page-disclaimer .usage-index a:hover,
.page-disclaimer .usage-index a:focus-visible {
  color: var(--ink-900);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-disclaimer .usage-index a:focus-visible {
  outline: 2px solid var(--cyan-bright);
  outline-offset: 2px;
}

/* ── 条款区块 ───────────────────────── */
.page-disclaimer .clause {
  position: relative;
  padding: clamp(38px, 6vw, 74px) 0;
  scroll-margin-top: 90px;
}

.page-disclaimer .clause::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--ink-700) 0%, var(--ink-700) 55%, rgba(23, 53, 43, 0) 100%);
  transform: skewY(-0.6deg);
  transform-origin: left center;
}

.page-disclaimer .clause--last::after {
  display: none;
}

.page-disclaimer .clause__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 46px);
  align-items: start;
}

.page-disclaimer .clause__head {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-left: 16px;
  margin-bottom: 22px;
}

.page-disclaimer .clause__head::before {
  content: "";
  position: absolute;
  left: 0;
  top: 3px;
  bottom: 3px;
  width: 4px;
  background: var(--alert);
}

.page-disclaimer .clause__num {
  font-family: var(--font-num);
  font-size: clamp(24px, 3.2vw, 34px);
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
  letter-spacing: 0.02em;
}

.page-disclaimer .clause__title {
  margin: 0;
  font-size: clamp(20px, 2.6vw, 28px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-disclaimer .clause-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-disclaimer .clause-list > li {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 10px;
  padding: 14px 0;
  border-bottom: 1px dashed var(--ink-700);
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--text);
}

.page-disclaimer .clause-list > li:first-child {
  padding-top: 0;
}

.page-disclaimer .clause-list > li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-disclaimer .clause-list__no {
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--cyan);
  padding-top: 5px;
}

.page-disclaimer .clause-list__text {
  min-width: 0;
}

/* ── 右侧对照面板 ───────────────────── */
.page-disclaimer .clause-note > .panel__inner {
  padding: clamp(18px, 2.4vw, 26px);
}

.page-disclaimer .clause-note {
  border-radius: 0;
}

.page-disclaimer .clause-note__label {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.2em;
  font-family: var(--font-num);
  color: var(--cyan-deep);
}

.page-disclaimer .clause-note__label--dark {
  color: var(--cyan);
}

.page-disclaimer .clause-note__title {
  margin: 0 0 14px;
  font-size: 16.5px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--ink-900);
}

.page-disclaimer .clause-note__title--dark {
  color: var(--paper);
}

.page-disclaimer .clause-note__foot {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-600);
}

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

.page-disclaimer .clause-note__foot--dark {
  color: var(--text-dim);
}

.page-disclaimer .clause-note__foot--dark a {
  color: var(--cyan);
}

.page-disclaimer .clause-note--dark {
  background: var(--ink-800);
  border: 1px solid var(--ink-600);
}

/* 三类对象 */
.page-disclaimer .object-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-disclaimer .object-list li {
  display: grid;
  gap: 4px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(8, 21, 15, 0.1);
}

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

.page-disclaimer .object-list__key {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--ink-900);
}

.page-disclaimer .object-list__val {
  font-size: 14px;
  line-height: 1.68;
  color: var(--ink-600);
}

/* 标注样例 */
.page-disclaimer .sample-code {
  margin: 0 0 4px;
  padding: 12px 14px;
  font-family: var(--font-num);
  font-size: 13px;
  line-height: 1.75;
  color: var(--ink-900);
  white-space: pre-wrap;
  word-break: break-word;
  background: rgba(12, 127, 114, 0.12);
  border-left: 3px solid var(--cyan-deep);
}

.page-disclaimer .note-fold {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid rgba(8, 21, 15, 0.12);
}

.page-disclaimer .note-fold summary {
  cursor: pointer;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--ink-900);
  list-style: none;
}

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

.page-disclaimer .note-fold summary::before {
  content: "＋";
  display: inline-block;
  margin-right: 8px;
  font-family: var(--font-num);
  color: var(--cyan-deep);
}

.page-disclaimer .note-fold[open] summary::before {
  content: "－";
}

.page-disclaimer .note-fold summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-disclaimer .note-fold ul {
  margin: 10px 0 0;
  padding-left: 18px;
  display: grid;
  gap: 7px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ink-600);
}

/* 使用对照 */
.page-disclaimer .rule-compare {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 11px;
}

.page-disclaimer .rule-compare li {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  font-size: 14px;
  line-height: 1.68;
  color: var(--ink-600);
}

.page-disclaimer .rule-compare__flag {
  display: inline-block;
  padding: 2px 0;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-align: center;
  color: var(--paper);
  background: var(--ink-600);
}

.page-disclaimer .rule-compare__flag--yes {
  background: var(--cyan-deep);
}

.page-disclaimer .rule-compare__flag--no {
  background: var(--alert);
}

/* 刷新节奏 */
.page-disclaimer .cadence-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-disclaimer .cadence-list li {
  display: grid;
  gap: 3px;
  padding-left: 14px;
  border-left: 2px solid rgba(12, 127, 114, 0.4);
}

.page-disclaimer .cadence-list__when {
  font-family: var(--font-num);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--cyan-deep);
}

.page-disclaimer .cadence-list__what {
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink-900);
}

/* 清单 */
.page-disclaimer .check-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-disclaimer .check-list li {
  position: relative;
  padding-left: 22px;
  font-size: 14px;
  line-height: 1.68;
  color: var(--text);
}

.page-disclaimer .check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 10px;
  height: 10px;
  background: var(--cyan);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
}

.page-disclaimer .check-list--dark li {
  color: var(--ink-600);
}

.page-disclaimer .check-list--dark li::before {
  background: var(--cyan-deep);
}

.page-disclaimer .clause-note__mail {
  display: inline-block;
  margin-top: 16px;
  font-family: var(--font-num);
  font-size: 13.5px;
  letter-spacing: 0.02em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(22, 227, 201, 0.5);
  word-break: break-all;
}

.page-disclaimer .clause-note__mail:hover,
.page-disclaimer .clause-note__mail:focus-visible {
  color: var(--cyan-bright);
  border-bottom-color: var(--cyan-bright);
}

/* ── 尾段 ───────────────────────────── */
.page-disclaimer .usage-tail {
  position: relative;
  padding: clamp(44px, 7vw, 88px) 0 clamp(52px, 8vw, 96px);
  background:
    linear-gradient(180deg, rgba(12, 127, 114, 0.22), rgba(8, 21, 15, 0) 70%),
    var(--ink-900);
  border-top: 4px solid transparent;
  border-image: linear-gradient(90deg, var(--cyan) 0%, var(--amber) 50%, var(--alert) 100%) 1;
}

.page-disclaimer .usage-tail__inner {
  max-width: 62ch;
}

.page-disclaimer .usage-tail__title {
  margin: 0 0 16px;
  font-size: clamp(22px, 3.4vw, 34px);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-disclaimer .usage-tail__lead {
  margin: 0 0 clamp(24px, 3.6vw, 36px);
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--text);
}

.page-disclaimer .usage-tail__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ── 平板及以上 ─────────────────────── */
@media (min-width: 720px) {
  .page-disclaimer .clause-list > li {
    grid-template-columns: 52px minmax(0, 1fr);
    gap: 14px;
  }

  .page-disclaimer .usage-hero__meta {
    gap: clamp(28px, 5vw, 56px);
  }
}

@media (min-width: 900px) {
  .page-disclaimer .clause__grid {
    grid-template-columns: minmax(0, 1.42fr) minmax(0, 1fr);
    gap: clamp(34px, 4.6vw, 64px);
  }

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

  .page-disclaimer .usage-hero__lead {
    margin-left: clamp(0px, 2vw, 24px);
  }
}

@media (min-width: 1180px) {
  .page-disclaimer .clause__head {
    padding-left: 20px;
  }

  .page-disclaimer .clause__head::before {
    width: 5px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .usage-index a,
  .page-disclaimer .note-fold summary::before {
    transition: none;
  }
}