.page-privacy {
  --privacy-rail-w: 224px;
  --privacy-read-w: 720px;
  color: var(--c-ink);
}

/* ── 首屏 ───────────────────────────── */
.page-privacy .privacy-hero {
  position: relative;
  overflow: hidden;
  background: var(--c-night);
  color: var(--c-mist);
  padding: 118px 0 64px;
}

.page-privacy .privacy-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(31, 122, 90, .16) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(31, 122, 90, .16) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse at 74% 26%, #000 12%, transparent 74%);
  mask-image: radial-gradient(ellipse at 74% 26%, #000 12%, transparent 74%);
  pointer-events: none;
}

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

.page-privacy .privacy-hero .breadcrumbs__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
}

.page-privacy .privacy-hero .breadcrumbs__item {
  color: rgba(242, 244, 243, .62);
}

.page-privacy .privacy-hero .breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  margin-right: 8px;
  color: rgba(242, 244, 243, .3);
}

.page-privacy .privacy-hero .breadcrumbs__link {
  color: rgba(242, 244, 243, .62);
  text-decoration: none;
  transition: color .2s var(--ease);
}

.page-privacy .privacy-hero .breadcrumbs__link:hover {
  color: var(--c-orange-soft);
}

.page-privacy .privacy-hero__split {
  display: grid;
  gap: 36px;
  margin-top: 30px;
}

.page-privacy .privacy-hero__text {
  max-width: 620px;
}

.page-privacy .privacy-hero h1 {
  margin: 16px 0 20px;
  font-size: clamp(32px, 5.4vw, 58px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -.022em;
  color: #fff;
}

.page-privacy .privacy-hero__lede {
  margin: 0;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.82;
  color: rgba(242, 244, 243, .84);
}

.page-privacy .privacy-hero__art {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid rgba(31, 122, 90, .55);
  background: var(--c-home);
}

.page-privacy .privacy-hero__art img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

/* ── 主体布局 ───────────────────────── */
.page-privacy .privacy-layout {
  display: grid;
  gap: 36px;
  padding-top: 56px;
  padding-bottom: 88px;
}

/* ── 章节浮岛 ───────────────────────── */
.page-privacy .privacy-rail__island {
  padding: 16px 14px;
  border-radius: var(--r-lg);
}

.page-privacy .privacy-rail__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--c-mute);
}

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

.page-privacy .privacy-rail__list::-webkit-scrollbar {
  display: none;
}

.page-privacy .privacy-rail__item {
  flex: 0 0 auto;
}

.page-privacy .rail-nav__link {
  display: block;
  padding: 8px 12px;
  border-radius: var(--r-pill);
  border-left: 2px solid transparent;
  font-size: 13px;
  line-height: 1.3;
  white-space: nowrap;
  color: var(--c-ink);
  text-decoration: none;
  transition: color .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease);
}

.page-privacy .rail-nav__link:hover {
  color: var(--c-line);
  background: rgba(31, 122, 90, .08);
}

.page-privacy .rail-nav__link[aria-current="true"] {
  color: var(--c-orange);
  font-weight: 700;
  background: rgba(255, 106, 19, .09);
}

/* ── 正文 ───────────────────────────── */
.page-privacy .privacy-doc {
  max-width: var(--privacy-read-w);
  min-width: 0;
}

.page-privacy .privacy-chapter {
  padding-bottom: 52px;
  margin-bottom: 52px;
  border-bottom: 1px solid var(--c-steel);
  scroll-margin-top: 112px;
}

.page-privacy .privacy-chapter:last-of-type {
  padding-bottom: 0;
  margin-bottom: 0;
  border-bottom: none;
}

.page-privacy .privacy-chapter__num {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .22em;
  color: var(--c-line);
}

.page-privacy .privacy-chapter__title {
  margin: 0 0 26px;
  font-size: clamp(23px, 3.4vw, 32px);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -.016em;
  color: var(--c-night);
}

.page-privacy .privacy-chapter p {
  margin: 0 0 22px;
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--c-ink);
}

.page-privacy .privacy-chapter p:last-child {
  margin-bottom: 0;
}

.page-privacy .privacy-sub {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 34px 0 12px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--c-ink);
}

.page-privacy .privacy-sub::before {
  content: "";
  flex: 0 0 auto;
  width: 16px;
  height: 2px;
  background: var(--c-line);
  border-radius: 2px;
}

.page-privacy .privacy-callout {
  margin: 30px 0;
  padding: 6px 0 6px 18px;
  border-left: 3px solid var(--c-orange);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.8;
  color: var(--c-night);
}

.page-privacy .privacy-chapter a {
  color: var(--c-line);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  text-decoration-color: rgba(31, 122, 90, .42);
  transition: color .2s var(--ease), text-decoration-color .2s var(--ease);
}

.page-privacy .privacy-chapter a:hover {
  color: var(--c-orange);
  text-decoration-color: rgba(255, 106, 19, .5);
}

/* ── 桌面端 ─────────────────────────── */
@media (min-width: 900px) {
  .page-privacy .privacy-hero {
    padding: 138px 0 84px;
  }

  .page-privacy .privacy-hero__split {
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
    margin-top: 40px;
  }

  .page-privacy .privacy-hero__art img {
    aspect-ratio: 4 / 3;
  }
}

@media (min-width: 1040px) {
  .page-privacy .privacy-layout {
    grid-template-columns: var(--privacy-rail-w) minmax(0, var(--privacy-read-w));
    gap: 76px;
    justify-content: center;
    padding-top: 92px;
    padding-bottom: 128px;
  }

  .page-privacy .privacy-rail {
    position: sticky;
    top: 112px;
    align-self: start;
  }

  .page-privacy .privacy-rail__island {
    padding: 22px 16px;
  }

  .page-privacy .privacy-rail__list {
    flex-direction: column;
    gap: 2px;
    overflow-x: visible;
  }

  .page-privacy .privacy-rail__item {
    flex: 1 1 auto;
  }

  .page-privacy .rail-nav__link {
    border-radius: 0 var(--r-sm) var(--r-sm) 0;
    border-left-width: 2px;
    font-size: 14px;
    white-space: normal;
    padding: 9px 12px;
  }

  .page-privacy .privacy-hero__art img {
    aspect-ratio: 16 / 9;
  }
}

@media (min-width: 1200px) {
  .page-privacy .privacy-hero {
    padding: 152px 0 96px;
  }

  .page-privacy .privacy-hero__split {
    gap: 72px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-privacy .rail-nav__link,
  .page-privacy .privacy-chapter a,
  .page-privacy .privacy-hero .breadcrumbs__link {
    transition: none;
  }
}