.page-privacy {
  --privacy-measure: 720px;
  background: var(--ink-void);
  color: var(--chalk);
}

.page-privacy .scroll-progress {
  position: sticky;
  top: 0;
  z-index: 3;
  height: 3px;
  background: var(--steel);
}

.page-privacy .scroll-progress__bar {
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: var(--compete);
}

/* 首屏 */
.page-privacy .privacy-hero {
  padding: clamp(28px, 5vw, 60px) 0 clamp(24px, 4vw, 40px);
}

.page-privacy .privacy-hero__title {
  font-family: var(--font-display);
  font-size: clamp(30px, 6.4vw, 62px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  margin: 14px 0 0;
  color: var(--chalk);
}

.page-privacy .privacy-hero__lede {
  max-width: 62ch;
  margin: 18px 0 0;
  font-size: 17px;
  line-height: 1.75;
  color: var(--mist);
}

.page-privacy .privacy-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* 顶部窄幅横幅 */
.page-privacy .privacy-banner {
  position: relative;
  margin: 0 0 clamp(30px, 5vw, 56px);
  overflow: hidden;
}

.page-privacy .privacy-banner__img {
  display: block;
  width: 100%;
  height: clamp(170px, 24vw, 320px);
  max-width: 100%;
  object-fit: cover;
  object-position: center;
}

.page-privacy .privacy-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 18, 32, 0.28), rgba(10, 18, 32, 0.92));
  pointer-events: none;
}

/* 布局：单栏窄阅读 + 右侧章节索引 */
.page-privacy .privacy-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 32px);
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-privacy .privacy-column {
  min-width: 0;
  max-width: var(--privacy-measure);
}

/* 章节索引 */
.page-privacy .privacy-index {
  order: -1;
  min-width: 0;
}

.page-privacy .privacy-index .chapter-index__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--mist);
  margin: 0 0 10px;
}

.page-privacy .privacy-index .chapter-index__list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 18px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-privacy .privacy-index .chapter-index__link {
  display: block;
  white-space: nowrap;
  padding: 6px 0 6px 10px;
  border-left: 2px solid transparent;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--mist);
  text-decoration: none;
  transition: color 0.24s var(--ease), border-color 0.24s var(--ease);
}

.page-privacy .privacy-index .chapter-index__link:hover {
  color: var(--warm);
}

.page-privacy .privacy-index .chapter-index__link[aria-current="true"] {
  color: var(--chalk);
  border-left-color: var(--compete);
}

/* 章节 */
.page-privacy .privacy-section {
  border-top: 1px solid var(--steel);
  padding: clamp(18px, 2.6vw, 28px) 0;
}

.page-privacy .privacy-section:last-of-type {
  border-bottom: 1px solid var(--steel);
}

.page-privacy .privacy-section__summary {
  display: flex;
  align-items: center;
  gap: 14px;
  cursor: pointer;
  list-style: none;
  padding: 4px 0;
}

.page-privacy .privacy-section__summary::-webkit-details-marker {
  display: none;
}

.page-privacy .privacy-section__summary::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--mist);
  transition: color 0.24s var(--ease);
}

.page-privacy .privacy-section[open] .privacy-section__summary::after {
  content: "–";
  color: var(--compete);
}

.page-privacy .privacy-section__summary:focus-visible {
  outline: 2px solid var(--compete);
  outline-offset: 4px;
  border-radius: var(--radius-s);
}

.page-privacy .privacy-section__num {
  flex: none;
  align-self: center;
  padding-left: 10px;
  border-left: 2px solid var(--turf);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--turf);
}

.page-privacy .privacy-section__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(21px, 3vw, 30px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--chalk);
}

.page-privacy .privacy-section__body {
  margin-top: 14px;
}

.page-privacy .privacy-section__body p {
  color: var(--mist);
  font-size: 16px;
  line-height: 1.78;
  margin: 0 0 12px;
}

.page-privacy .privacy-section__body h3 {
  margin: 22px 0 8px;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--chalk);
}

.page-privacy .privacy-section__body strong {
  color: var(--chalk);
  font-weight: 600;
}

.page-privacy .privacy-section__body a {
  color: var(--warm);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-privacy .privacy-section__body a:hover {
  color: var(--compete);
}

/* 列表 */
.page-privacy .privacy-list {
  list-style: none;
  margin: 10px 0 12px;
  padding: 0;
}

.page-privacy .privacy-list li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 10px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--mist);
}

.page-privacy .privacy-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--compete);
}

/* 关键定义块 */
.page-privacy .privacy-def {
  margin: 20px 0;
  padding: 16px 20px;
  background: rgba(238, 241, 246, 0.07);
  border-left: 3px solid var(--turf);
  border-radius: 0 var(--radius-m) var(--radius-m) 0;
}

.page-privacy .privacy-def__label {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--turf);
}

.page-privacy .privacy-def p:last-child {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--chalk);
}

/* 期限清单 */
.page-privacy .privacy-terms {
  margin: 14px 0 20px;
  border-top: 1px solid var(--steel);
}

.page-privacy .privacy-terms__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px 16px;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px solid var(--steel);
}

.page-privacy .privacy-terms__row dt {
  font-size: 15px;
  line-height: 1.6;
  color: var(--mist);
}

.page-privacy .privacy-terms__row dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--warm);
  white-space: nowrap;
}

/* 联系块 */
.page-privacy .privacy-contact {
  margin-top: 24px;
  padding: clamp(16px, 3vw, 24px);
  background: var(--ink-raise);
  border: 1px solid var(--steel);
  border-radius: var(--radius-l);
}

.page-privacy .privacy-contact__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--compete);
}

.page-privacy .copy-mail {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
}

.page-privacy .copy-mail__text {
  font-family: var(--font-mono);
  font-size: 14px;
  word-break: break-all;
  color: var(--chalk);
}

.page-privacy .copy-status {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--turf);
}

.page-privacy .privacy-contact__note {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

/* 延伸入口 */
.page-privacy .privacy-next {
  display: grid;
  gap: 12px;
  margin-top: clamp(28px, 4vw, 40px);
}

.page-privacy .privacy-next__link {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 18px;
  border: 1px solid var(--steel);
  border-radius: var(--radius-m);
  text-decoration: none;
  background: var(--ink-raise);
  transition: border-color 0.24s var(--ease), background 0.24s var(--ease);
}

.page-privacy .privacy-next__link:hover {
  border-color: var(--compete);
  background: var(--steel);
}

.page-privacy .privacy-next__key {
  font-family: var(--font-display);
  font-size: 19px;
  letter-spacing: 0.01em;
  color: var(--chalk);
}

.page-privacy .privacy-next__desc {
  font-size: 14px;
  line-height: 1.6;
  color: var(--mist);
}

/* 中等及以上屏幕 */
@media (min-width: 720px) {
  .page-privacy .privacy-section__body {
    padding-left: 42px;
  }

  .page-privacy .privacy-next {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding-left: 42px;
  }
}

/* 桌面：索引固定在右侧 */
@media (min-width: 1000px) {
  .page-privacy .privacy-layout {
    grid-template-columns: minmax(0, var(--privacy-measure)) 200px;
    justify-content: start;
    column-gap: clamp(40px, 6vw, 96px);
    align-items: start;
  }

  .page-privacy .privacy-index {
    order: 0;
    position: sticky;
    top: 104px;
    align-self: start;
  }

  .page-privacy .privacy-index .chapter-index__list {
    display: grid;
    gap: 2px;
    overflow: visible;
  }

  .page-privacy .privacy-index .chapter-index__link {
    white-space: normal;
    padding: 6px 0 6px 12px;
    font-size: 12.5px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-privacy .privacy-index .chapter-index__link,
  .page-privacy .privacy-next__link,
  .page-privacy .privacy-section__summary::after {
    transition: none;
  }
}

/* 打印 */
@media print {
  .page-privacy .scroll-progress,
  .page-privacy .privacy-index,
  .page-privacy .privacy-hero__actions,
  .page-privacy .privacy-banner,
  .page-privacy .privacy-next {
    display: none;
  }

  .page-privacy,
  .page-privacy .privacy-section__body p,
  .page-privacy .privacy-list li,
  .page-privacy .privacy-terms__row dt,
  .page-privacy .privacy-contact__note {
    background: #fff;
    color: #101828;
  }

  .page-privacy .privacy-section {
    border-color: #c9d1dd;
  }
}
<<<END>>>