.page-privacy {
  --priv-rail-w: 236px;
  --priv-measure: 64ch;
  scroll-behavior: smooth;
}

/* ---------- 首屏 ---------- */
.page-privacy .priv-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(18px, 3.5vw, 38px) 0 clamp(26px, 4.5vw, 52px);
  overflow: hidden;
}

.page-privacy .priv-hero::before {
  content: "";
  position: absolute;
  top: -32%;
  right: -14%;
  width: min(62vw, 700px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 50%, rgba(46, 125, 79, .30), transparent 66%);
  pointer-events: none;
  z-index: 0;
}

.page-privacy .priv-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: min(72%, 900px);
  height: 1px;
  background: linear-gradient(90deg, var(--line), transparent);
  pointer-events: none;
  z-index: 0;
}

.page-privacy .priv-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 42px);
  align-items: center;
}

.page-privacy .priv-hero__text h1 {
  font-size: clamp(27px, 4.4vw, 44px);
  line-height: 1.2;
  max-width: 14em;
  margin: 10px 0 16px;
}

.page-privacy .priv-hero__text .lede {
  max-width: 46ch;
  color: var(--muted);
  margin-bottom: 20px;
}

.page-privacy .priv-hero__tags {
  margin: 0;
}

.page-privacy .priv-hero__media {
  position: relative;
  margin: 0;
  aspect-ratio: 3 / 2;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  overflow: hidden;
  background: var(--bg-stand);
}

.page-privacy .priv-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 主体两栏 ---------- */
.page-privacy .priv-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 52px);
  padding-bottom: clamp(48px, 8vw, 100px);
}

/* ---------- 左侧章节索引 ---------- */
.page-privacy .priv-rail {
  position: relative;
  border-top: 1px solid var(--line);
  padding-top: 18px;
}

.page-privacy .priv-rail .rail-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 14px;
}

.page-privacy .priv-toc {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-privacy .priv-toc li {
  margin: 0;
}

.page-privacy .priv-toc a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 9px 12px 9px 14px;
  border-left: 2px solid var(--line);
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease),
    background-color var(--dur-fast) var(--ease);
}

.page-privacy .priv-toc a:hover,
.page-privacy .priv-toc a:focus-visible {
  color: var(--warm);
  border-left-color: var(--pitch-bright);
  background-color: rgba(46, 125, 79, .14);
  outline: none;
}

.page-privacy .priv-toc__no {
  flex: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--pitch);
  transition: color var(--dur-fast) var(--ease);
}

.page-privacy .priv-toc a:hover .priv-toc__no,
.page-privacy .priv-toc a:focus-visible .priv-toc__no {
  color: var(--pitch-bright);
}

.page-privacy .priv-progress {
  margin-top: 20px;
  height: 3px;
  border-radius: 999px;
  background: var(--line);
  overflow: hidden;
}

.page-privacy .priv-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--pitch), var(--cyan));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 120ms linear;
}

@supports (animation-timeline: scroll()) {
  .page-privacy .priv-progress__bar {
    animation: priv-fill linear both;
    animation-timeline: scroll(root block);
  }

  @keyframes priv-fill {
    from { transform: scaleX(0); }
    to { transform: scaleX(1); }
  }
}

.page-privacy .priv-rail__hint {
  margin: 12px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 章节 ---------- */
.page-privacy .priv-content {
  min-width: 0;
}

.page-privacy .priv-sec {
  border-top: 1px solid var(--line);
  padding: clamp(26px, 4vw, 42px) 0;
  scroll-margin-top: calc(var(--topbar-h) + 24px);
}

.page-privacy .priv-sec:first-child {
  border-top-color: var(--line-soft);
}

.page-privacy .priv-sec__head {
  display: flex;
  align-items: baseline;
  gap: clamp(12px, 2vw, 20px);
  margin-bottom: 16px;
}

.page-privacy .priv-sec__no {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .18em;
  color: var(--pitch);
  padding: 3px 9px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(46, 125, 79, .1);
}

.page-privacy .priv-sec__title {
  margin: 0;
  font-size: clamp(19px, 2.4vw, 26px);
  line-height: 1.4;
}

.page-privacy .priv-sec__body p {
  max-width: var(--priv-measure);
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--warm);
  overflow-wrap: break-word;
}

.page-privacy .priv-sec__body p:last-of-type {
  margin-bottom: 0;
}

.page-privacy .priv-sec__body a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 214, 232, .4);
  transition: color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}

.page-privacy .priv-sec__body a:hover,
.page-privacy .priv-sec__body a:focus-visible {
  color: var(--pitch-bright);
  border-bottom-color: var(--pitch-bright);
  outline: none;
}

/* ---------- 术语小标签 ---------- */
.page-privacy .priv-terms {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
}

.page-privacy .priv-term {
  font-size: 12.5px;
  letter-spacing: .04em;
  line-height: 1.4;
  color: var(--pitch-bright);
  border: 1px solid rgba(92, 201, 138, .45);
  border-radius: 999px;
  padding: 4px 13px;
  background: rgba(46, 125, 79, .1);
}

/* ---------- 联系区块 ---------- */
.page-privacy .priv-sec--contact {
  border-bottom: 1px solid var(--line);
}

.page-privacy .priv-contact {
  margin-top: 24px;
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid var(--line);
  border-left: 3px solid var(--pitch);
  border-radius: var(--radius-md);
  background: var(--bg-stand);
}

.page-privacy .priv-contact .contact-item__key {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}

.page-privacy .priv-contact .contact-item__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.page-privacy .priv-contact .contact-item__val {
  font-size: clamp(15px, 2vw, 17px);
  color: var(--warm);
  overflow-wrap: anywhere;
}

.page-privacy .priv-contact .copy-status {
  margin: 10px 0 0;
  min-height: 1em;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--pitch-bright);
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 900px) {
  .page-privacy .priv-hero__grid {
    grid-template-columns: 1.05fr .95fr;
    gap: clamp(32px, 5vw, 66px);
  }
}

@media (min-width: 1024px) {
  .page-privacy .priv-layout {
    grid-template-columns: var(--priv-rail-w) minmax(0, 1fr);
    gap: clamp(36px, 5vw, 76px);
  }

  .page-privacy .priv-rail {
    position: sticky;
    top: calc(var(--topbar-h) + 28px);
    align-self: start;
    border-top: none;
    padding-top: 0;
  }

  .page-privacy .priv-sec:nth-child(odd) .priv-sec__body {
    transform: translateX(-6px);
  }

  .page-privacy .priv-sec:nth-child(even) .priv-sec__body {
    transform: translateX(10px);
  }
}

@media (min-width: 1280px) {
  .page-privacy .priv-sec:nth-child(even) .priv-sec__body {
    transform: translateX(24px);
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-privacy,
  .page-privacy .priv-toc a,
  .page-privacy .priv-progress__bar,
  .page-privacy .priv-sec__body a {
    transition: none;
    animation: none;
    scroll-behavior: auto;
  }

  .page-privacy .priv-progress__bar {
    transform: scaleX(1);
  }

  .page-privacy .priv-sec__body {
    transform: none !important;
  }
}