.page-privacy {
  --privacy-cut: 18px;
}

/* ---------- 首屏：框景 + 抽象数据流 ---------- */
.page-privacy .privacy-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink-black);
  padding: calc(var(--header-h) + clamp(44px, 7vw, 84px)) 0 clamp(40px, 6vw, 76px);
  border-bottom: 1px solid var(--line-dark);
}

.page-privacy .privacy-hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-privacy .privacy-hero-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.34;
}

.page-privacy .privacy-hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(5, 7, 12, 0.78) 0%, rgba(5, 7, 12, 0.52) 44%, var(--ink-black) 100%),
    linear-gradient(102deg, rgba(31, 91, 255, 0.38) 0%, rgba(5, 7, 12, 0) 58%);
}

.page-privacy .privacy-hero-inner {
  position: relative;
  z-index: 2;
  max-width: 840px;
}

.page-privacy .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: clamp(22px, 3vw, 40px);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--graphite);
}

.page-privacy .breadcrumb a {
  color: var(--electric-soft);
  text-decoration: none;
}

.page-privacy .breadcrumb a:hover {
  color: var(--electric);
}

.page-privacy .breadcrumb span[aria-current="page"] {
  color: rgba(246, 248, 251, 0.72);
}

.page-privacy .eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--electric);
}

.page-privacy h1 {
  margin: 0 0 20px;
  font-size: clamp(2.1rem, 5.4vw, 3.5rem);
  line-height: 1.14;
  letter-spacing: -0.01em;
  font-weight: 900;
  color: var(--paper);
}

.page-privacy .privacy-lead {
  margin: 0 0 26px;
  max-width: 40em;
  font-size: clamp(16px, 1.55vw, 17.5px);
  line-height: 1.85;
  color: rgba(246, 248, 251, 0.78);
}

.page-privacy .privacy-hero-note {
  margin: 0;
  padding-left: 14px;
  border-left: 2px solid var(--electric);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--graphite);
}

/* ---------- 正文骨架 ---------- */
.page-privacy .privacy-body {
  background: var(--ink-black);
  padding: clamp(46px, 7vw, 92px) 0 clamp(64px, 9vw, 124px);
}

.page-privacy .privacy-layout {
  display: flex;
  flex-direction: column;
  gap: 44px;
}

/* ---------- 条款主体：单栏窄幅纸白长文 ---------- */
.page-privacy .privacy-doc {
  background: var(--paper);
  color: var(--ink);
  padding: clamp(26px, 4.4vw, 62px);
  clip-path: polygon(
    0 0,
    calc(100% - var(--privacy-cut)) 0,
    100% var(--privacy-cut),
    100% 100%,
    var(--privacy-cut) 100%,
    0 calc(100% - var(--privacy-cut))
  );
}

.page-privacy .privacy-clause + .privacy-clause {
  margin-top: clamp(34px, 5vw, 54px);
  padding-top: clamp(30px, 4vw, 46px);
  border-top: 1px solid var(--line);
}

.page-privacy .clause-head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 18px;
}

.page-privacy .clause-num {
  flex: none;
  padding: 7px 8px 6px;
  border: 1px solid rgba(31, 91, 255, 0.38);
  font-size: 13px;
  line-height: 1;
  letter-spacing: 0.08em;
  color: var(--tech-blue);
}

.page-privacy .clause-head h2 {
  margin: 0;
  padding-top: 2px;
  font-size: clamp(1.2rem, 2.15vw, 1.58rem);
  line-height: 1.35;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-privacy .prose p {
  margin: 0 0 16px;
  max-width: 44em;
  font-size: 16px;
  line-height: 1.85;
  color: #141a22;
  overflow-wrap: break-word;
}

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

.page-privacy .prose a {
  color: var(--tech-blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(31, 91, 255, 0.35);
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease);
}

.page-privacy .prose a:hover {
  color: #0d3ec4;
  border-bottom-color: var(--tech-blue);
}

.page-privacy .clause-list {
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
}

.page-privacy .clause-list li {
  position: relative;
  margin-bottom: 12px;
  padding-left: 22px;
  max-width: 44em;
  font-size: 15.5px;
  line-height: 1.82;
  color: #141a22;
  overflow-wrap: break-word;
}

.page-privacy .clause-list li:last-child {
  margin-bottom: 0;
}

.page-privacy .clause-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 9px;
  height: 1px;
  background: var(--tech-blue);
}

.page-privacy .clause-list strong {
  font-weight: 700;
  color: var(--ink);
}

/* ---------- 可展开的补充说明 ---------- */
.page-privacy .clause-more {
  margin-top: 20px;
  padding: 2px 0 2px 16px;
  border-left: 2px solid var(--line);
}

.page-privacy .clause-more summary {
  display: flex;
  align-items: center;
  min-height: 44px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--tech-blue);
}

.page-privacy .clause-more summary::-webkit-details-marker {
  display: none;
}

.page-privacy .clause-more summary::after {
  content: "+";
  margin-left: 8px;
  font-size: 15px;
  line-height: 1;
}

.page-privacy .clause-more[open] summary::after {
  content: "–";
}

.page-privacy .clause-more p {
  margin: 4px 0 14px;
  max-width: 42em;
  font-size: 15px;
  line-height: 1.8;
  color: #3a4351;
  overflow-wrap: break-word;
}

/* ---------- 移动端：目录置顶为标签条 ---------- */
.page-privacy .privacy-rail {
  order: -1;
}

.page-privacy .index-rail-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--graphite);
}

.page-privacy .rail-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-privacy .index-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 8px 12px;
  border: 1px solid var(--line-dark-strong);
  font-size: 13.5px;
  line-height: 1.4;
  color: rgba(246, 248, 251, 0.66);
  text-decoration: none;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-privacy .index-link .mono {
  margin-right: 7px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--graphite);
}

.page-privacy .index-link::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 0;
  width: 2px;
  height: 100%;
  background: var(--electric);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.3s var(--ease);
}

.page-privacy .index-link:hover {
  color: var(--electric-soft);
  border-color: var(--electric-soft);
}

.page-privacy .index-link[data-active="true"] {
  color: var(--electric);
  border-color: var(--electric);
}

.page-privacy .index-link[data-active="true"] .mono {
  color: var(--electric);
}

.page-privacy .index-link[data-active="true"]::before {
  transform: scaleY(1);
}

.page-privacy .rail-note {
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid var(--line-dark);
}

.page-privacy .rail-note p {
  margin: 0 0 16px;
  max-width: 34em;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--graphite);
}

.page-privacy .rail-cta {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 20px;
  border: 1px solid var(--coral);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--coral);
  text-decoration: none;
  transition: background 0.25s var(--ease), color 0.25s var(--ease);
}

.page-privacy .rail-cta:hover {
  background: var(--coral);
  color: var(--ink-black);
}

/* ---------- 桌面端：正文在左、锚点目录固定在右 ---------- */
@media (min-width: 1000px) {
  .page-privacy .privacy-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 264px;
    gap: clamp(40px, 5vw, 72px);
    align-items: start;
  }

  .page-privacy .privacy-doc {
    max-width: 780px;
  }

  .page-privacy .privacy-rail {
    order: 0;
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

  .page-privacy .rail-nav {
    display: block;
  }

  .page-privacy .index-link {
    display: block;
    min-height: 0;
    padding: 11px 0 11px 16px;
    border: 0;
    border-left: 1px solid var(--line-dark-strong);
    font-size: 14px;
    line-height: 1.5;
  }

  .page-privacy .index-link:hover {
    border-color: var(--line-dark-strong);
  }

  .page-privacy .index-link[data-active="true"] {
    border-color: var(--line-dark-strong);
  }
}

@media (min-width: 1280px) {
  .page-privacy .privacy-layout {
    grid-template-columns: minmax(0, 1fr) 288px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-privacy .index-link,
  .page-privacy .index-link::before,
  .page-privacy .rail-cta,
  .page-privacy .prose a {
    transition: none;
  }
}