.page-privacy {
  --priv-rail: 62px;
  --priv-line: rgba(201, 209, 206, 0.16);
  --priv-line-soft: rgba(201, 209, 206, 0.09);
  position: relative;
  isolation: isolate;
  background: var(--ink);
  color: var(--paper);
  padding-block: clamp(18px, 3vw, 30px) clamp(56px, 9vw, 108px);
}

.page-privacy::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 56px 56px;
  opacity: 0.34;
}

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

.page-privacy .priv-wrap {
  width: 100%;
  max-width: 860px;
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 32px);
}

.page-privacy .priv-wrap--wide {
  max-width: 1180px;
}

/* ---------- 首屏 ---------- */
.page-privacy .priv-hero {
  border-left: 2px solid var(--orange);
  padding: clamp(4px, 1vw, 8px) 0 clamp(8px, 1.5vw, 14px) clamp(16px, 3vw, 26px);
  margin-top: clamp(16px, 3vw, 28px);
}

.page-privacy .priv-hero .eyebrow {
  color: var(--amber);
  margin: 0;
}

.page-privacy .priv-hero h1 {
  margin: 12px 0 0;
  font-size: clamp(1.85rem, 6vw, 3rem);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-privacy .priv-hero__lead {
  margin: 18px 0 0;
  max-width: 58ch;
  font-size: clamp(0.95rem, 2.4vw, 1.0625rem);
  line-height: 1.85;
  color: var(--silver);
}

/* ---------- 横幅 ---------- */
.page-privacy .priv-banner {
  margin: clamp(24px, 4vw, 40px) 0 0;
}

.page-privacy .priv-banner .figure__frame {
  border: 1px solid var(--priv-line);
  overflow: hidden;
  background: var(--ink-2);
}

.page-privacy .priv-banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 24 / 7;
  object-fit: cover;
}

/* ---------- 内容索引 ---------- */
.page-privacy .priv-toc {
  margin-top: clamp(28px, 5vw, 46px);
  padding: 18px 0 20px;
  border-top: 1px solid var(--priv-line);
  border-bottom: 1px solid var(--priv-line);
}

.page-privacy .priv-toc .eyebrow {
  margin: 0 0 14px;
  color: var(--muted);
}

.page-privacy .priv-toc ol {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: toc;
  display: grid;
  gap: 2px;
}

.page-privacy .priv-toc li {
  counter-increment: toc;
}

.page-privacy .priv-toc a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  min-height: 40px;
  padding: 8px 4px;
  color: var(--silver);
  text-decoration: none;
  font-size: 0.9375rem;
  line-height: 1.5;
  border-bottom: 1px solid var(--priv-line-soft);
  transition: color 220ms var(--ease), padding-left 220ms var(--ease);
}

.page-privacy .priv-toc a::before {
  content: counter(toc, decimal-leading-zero);
  flex: none;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--orange);
}

.page-privacy .priv-toc a:hover,
.page-privacy .priv-toc a:focus-visible {
  color: var(--paper);
  padding-left: 10px;
}

/* ---------- 章节 ---------- */
.page-privacy .priv-sec {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  padding-block: clamp(30px, 5vw, 52px);
  border-top: 1px solid var(--priv-line);
  scroll-margin-top: 96px;
}

.page-privacy .priv-sec:first-of-type {
  border-top: 0;
}

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

.page-privacy .priv-sec__rail::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--priv-line-soft);
}

.page-privacy .priv-sec__num {
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--orange);
}

.page-privacy .priv-sec__body {
  min-width: 0;
}

.page-privacy .priv-sec__body h2 {
  margin: 0;
  font-size: clamp(1.3rem, 4.4vw, 1.75rem);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-privacy .priv-sec__body > p {
  margin: 16px 0 0;
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.88;
  color: var(--paper);
  opacity: 0.88;
}

/* ---------- 功能条目 ---------- */
.page-privacy .priv-list {
  list-style: none;
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding: 0;
}

.page-privacy .priv-list > li {
  position: relative;
  padding: 16px 0 16px 22px;
  border-top: 1px solid var(--priv-line-soft);
}

.page-privacy .priv-list > li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 25px;
  width: 10px;
  height: 2px;
  background: var(--orange);
}

.page-privacy .priv-list h3 {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: -0.005em;
  color: var(--paper);
}

.page-privacy .priv-list p {
  margin: 8px 0 0;
  max-width: 60ch;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--silver);
}

/* ---------- 数据流向示意 ---------- */
.page-privacy .priv-flow {
  margin: clamp(24px, 4vw, 34px) 0 0;
  padding: clamp(16px, 3vw, 24px);
  background: var(--ink-2);
  border: 1px solid var(--priv-line);
}

.page-privacy .priv-flow__svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-privacy .priv-flow__cap {
  margin: 14px 0 0;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--muted);
  letter-spacing: 0.01em;
}

/* ---------- 开关折叠项 ---------- */
.page-privacy .priv-toggle {
  margin-top: 12px;
  background: var(--ink-2);
  border: 1px solid var(--priv-line);
  transition: border-color 220ms var(--ease);
}

.page-privacy .priv-toggle[open] {
  border-color: rgba(255, 106, 26, 0.42);
}

.page-privacy .priv-toggle > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  min-height: 56px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
}

.page-privacy .priv-toggle > summary::-webkit-details-marker {
  display: none;
}

.page-privacy .priv-toggle__head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  min-width: 0;
}

.page-privacy .priv-toggle__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--paper);
  letter-spacing: -0.005em;
}

.page-privacy .priv-toggle__mark {
  flex: none;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border: 1px solid var(--line);
  color: var(--orange);
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1;
}

.page-privacy .priv-toggle__mark::before {
  content: "+";
}

.page-privacy .priv-toggle[open] .priv-toggle__mark::before {
  content: "\2212";
}

.page-privacy .priv-toggle__body {
  padding: 0 16px 18px;
  border-top: 1px solid var(--priv-line-soft);
}

.page-privacy .priv-toggle__body p {
  margin: 14px 0 0;
  max-width: 60ch;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--silver);
}

/* ---------- 咨询与链接 ---------- */
.page-privacy .priv-links {
  list-style: none;
  margin: clamp(22px, 3.5vw, 30px) 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-privacy .priv-links li {
  border-top: 1px solid var(--priv-line-soft);
}

.page-privacy .priv-links a {
  display: block;
  padding: 13px 0 13px 18px;
  position: relative;
  color: var(--amber);
  text-decoration: none;
  font-size: 0.9375rem;
  line-height: 1.6;
  transition: color 200ms var(--ease);
}

.page-privacy .priv-links a::before {
  content: "\2192";
  position: absolute;
  left: 0;
  color: var(--orange);
  font-family: var(--mono);
}

.page-privacy .priv-links a:hover,
.page-privacy .priv-links a:focus-visible {
  color: var(--paper);
}

.page-privacy .priv-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 4vw, 34px);
}

.page-privacy .priv-cta .btn {
  min-height: 44px;
}

/* ---------- 桌面栅格 ---------- */
@media (min-width: 760px) {
  .page-privacy .priv-sec {
    grid-template-columns: var(--priv-rail) minmax(0, 1fr);
    gap: clamp(18px, 2.6vw, 30px);
  }

  .page-privacy .priv-sec__rail {
    display: block;
    padding-right: 16px;
    border-right: 1px solid var(--priv-line-soft);
    text-align: right;
  }

  .page-privacy .priv-sec__rail::after {
    display: none;
  }

  .page-privacy .priv-toc ol {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(20px, 3vw, 36px);
  }
}

@media (min-width: 1080px) {
  .page-privacy .priv-sec {
    padding-block: clamp(38px, 4vw, 58px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-privacy .priv-toc a,
  .page-privacy .priv-toggle,
  .page-privacy .priv-links a {
    transition: none;
  }
}