.page-privacy {
  --policy-rule: rgba(7, 20, 15, 0.14);
  --policy-card: rgba(247, 242, 231, 0.78);
  background: var(--paper-sand);
  color: var(--deep-ink);
}

/* 顶部深色条 */
.page-privacy .privacy-masthead {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(120% 150% at 88% -20%, rgba(53, 240, 208, 0.18), transparent 62%),
    linear-gradient(152deg, var(--ink-green) 0%, var(--night-blue) 78%);
  color: var(--paper-white);
  padding-block: clamp(20px, 4vw, 44px) clamp(26px, 4vw, 50px);
}

.page-privacy .privacy-masthead::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(143, 166, 156, 0.13) 1px, transparent 1px),
    linear-gradient(90deg, rgba(143, 166, 156, 0.13) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 62%);
  mask-image: linear-gradient(180deg, transparent 0%, #000 62%);
  opacity: 0.6;
  pointer-events: none;
}

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

.page-privacy .breadcrumb {
  margin-bottom: clamp(16px, 3vw, 30px);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-privacy .crumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5em;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-privacy .crumb-list li + li::before {
  content: "/";
  margin-right: 0.5em;
  color: rgba(143, 166, 156, 0.6);
}

.page-privacy .crumb-list a {
  color: var(--mist);
  text-decoration: none;
}

.page-privacy .crumb-list a:hover,
.page-privacy .crumb-list a:focus-visible {
  color: var(--neon);
}

.page-privacy .crumb-list [aria-current="page"] {
  color: var(--paper-white);
}

.page-privacy .eyebrow {
  color: var(--neon);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  margin: 0 0 0.7rem;
}

.page-privacy .privacy-masthead h1 {
  margin: 0;
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 900;
  line-height: 1.04;
  letter-spacing: -0.025em;
  color: var(--paper-white);
}

.page-privacy .privacy-lead {
  max-width: 48ch;
  margin: 0.9rem 0 0;
  font-size: clamp(0.94rem, 1.4vw, 1.04rem);
  line-height: 1.85;
  color: rgba(247, 242, 231, 0.82);
}

.page-privacy .privacy-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1.1rem;
  margin: 1.4rem 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.71rem;
  letter-spacing: 0.09em;
  color: var(--mist);
}

.page-privacy .meta-chip {
  display: inline-block;
  padding: 0.3em 0.85em;
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius-pill);
  color: var(--gold);
}

/* 顶部图带 */
.page-privacy .privacy-visual {
  background: var(--night-blue);
  line-height: 0;
  border-bottom: 1px solid rgba(7, 20, 15, 0.3);
}

.page-privacy .privacy-visual img {
  display: block;
  width: 100%;
  height: auto;
  max-height: clamp(170px, 25vw, 320px);
  object-fit: cover;
  opacity: 0.92;
}

/* 版式 */
.page-privacy .privacy-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-areas:
    "toc"
    "doc";
  gap: clamp(18px, 3vw, 40px);
  padding-block: clamp(24px, 4vw, 56px) clamp(32px, 5vw, 72px);
}

/* 目录 */
.page-privacy .privacy-toc {
  grid-area: toc;
}

.page-privacy .toc {
  border: 1px solid var(--policy-rule);
  border-radius: var(--radius-card);
  background: var(--policy-card);
  padding: 0.85rem 1rem;
}

.page-privacy .toc summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--deep-ink);
}

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

.page-privacy .toc summary::after {
  content: "＋";
  color: var(--gold);
  font-size: 0.9rem;
  line-height: 1;
}

.page-privacy .toc[open] summary::after {
  content: "－";
}

.page-privacy .toc-list {
  counter-reset: tocitem;
  margin: 0.75rem 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px dashed var(--policy-rule);
}

.page-privacy .toc-list li {
  border-bottom: 1px dashed var(--policy-rule);
}

.page-privacy .toc-list li:last-child {
  border-bottom: 0;
}

.page-privacy .toc-list a {
  display: flex;
  align-items: baseline;
  gap: 0.7em;
  padding: 0.5em 0;
  color: rgba(7, 20, 15, 0.8);
  font-size: 0.88rem;
  line-height: 1.5;
  text-decoration: none;
}

.page-privacy .toc-list a::before {
  counter-increment: tocitem;
  content: counter(tocitem, decimal-leading-zero);
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 0.71rem;
  color: var(--gold);
}

.page-privacy .toc-list a:hover,
.page-privacy .toc-list a:focus-visible {
  color: var(--deep-ink);
  background: rgba(53, 240, 208, 0.18);
}

/* 正文 */
.page-privacy .privacy-doc {
  grid-area: doc;
  counter-reset: sec;
  min-width: 0;
}

.page-privacy .policy-section {
  counter-increment: sec;
  padding-block: clamp(18px, 3vw, 28px);
  border-top: 1px solid var(--policy-rule);
}

.page-privacy .policy-section:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.page-privacy .policy-section h2 {
  display: flex;
  align-items: baseline;
  gap: 0.6em;
  margin: 0 0 0.65em;
  font-size: clamp(1.22rem, 2.6vw, 1.55rem);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--deep-ink);
}

.page-privacy .policy-section h2::before {
  content: counter(sec, decimal-leading-zero);
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-privacy .policy-section p {
  max-width: 64ch;
  margin: 0.7em 0;
  font-size: clamp(0.94rem, 1.15vw, 1.01rem);
  line-height: 1.85;
  color: rgba(7, 20, 15, 0.88);
}

.page-privacy .policy-section a {
  color: var(--ink-green);
  text-decoration: underline;
  text-decoration-color: var(--rule-strong);
  text-underline-offset: 0.22em;
}

.page-privacy .policy-section a:hover,
.page-privacy .policy-section a:focus-visible {
  color: var(--deep-ink);
  text-decoration-color: var(--amber);
}

.page-privacy .policy-section h3 {
  margin: 0 0 0.4em;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--ink-green);
}

/* 三类场景卡片 */
.page-privacy .info-grid {
  display: grid;
  gap: 12px;
  margin-top: 1.1rem;
}

.page-privacy .info-card {
  background: var(--policy-card);
  border: 1px solid var(--policy-rule);
  border-left: 3px solid var(--neon);
  border-radius: 14px;
  padding: 0.95rem 1.05rem;
}

.page-privacy .info-card p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.72;
}

/* 保留期列表 */
.page-privacy .retention {
  margin: 1.1rem 0 0;
  border-top: 1px solid var(--policy-rule);
}

.page-privacy .retention div {
  display: grid;
  gap: 0.2rem;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--policy-rule);
}

.page-privacy .retention dt {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-privacy .retention dd {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: rgba(7, 20, 15, 0.86);
}

/* 联系信息条 */
.page-privacy .contact-strip {
  margin-top: clamp(24px, 4vw, 40px);
  padding: clamp(18px, 3vw, 28px);
  background: linear-gradient(150deg, var(--ink-green), var(--night-blue));
  color: var(--paper-white);
  border-radius: var(--radius-card);
}

.page-privacy .strip-title {
  margin: 0 0 1rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--neon);
}

.page-privacy .contact-strip .contact-item {
  display: grid;
  gap: 0.15rem;
  padding: 0.55rem 0;
  border-bottom: 1px dashed rgba(143, 166, 156, 0.28);
}

.page-privacy .contact-strip .contact-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: var(--mist);
}

.page-privacy .contact-strip .contact-value {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--paper-white);
  overflow-wrap: anywhere;
}

.page-privacy .strip-note {
  margin: 0.9rem 0 0;
  font-size: 0.82rem;
  line-height: 1.7;
  color: rgba(247, 242, 231, 0.72);
}

/* 页尾行 */
.page-privacy .doc-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-top: clamp(18px, 3vw, 28px);
  padding-top: 1rem;
  border-top: 1px solid var(--policy-rule);
}

.page-privacy .doc-foot-note {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: rgba(7, 20, 15, 0.55);
}

.page-privacy .top-link {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--ink-green);
  text-decoration: none;
  padding: 0.45em 0.9em;
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius-pill);
}

.page-privacy .top-link:hover,
.page-privacy .top-link:focus-visible {
  background: var(--neon);
  border-color: var(--neon);
  color: var(--deep-ink);
}

/* 平板及桌面 */
@media (min-width: 720px) {
  .page-privacy .info-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-privacy .retention div {
    grid-template-columns: 190px minmax(0, 1fr);
    align-items: baseline;
    gap: 1rem;
  }

  .page-privacy .contact-strip {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 1.75rem;
  }

  .page-privacy .strip-title,
  .page-privacy .strip-note,
  .page-privacy .contact-item--wide {
    grid-column: 1 / -1;
  }
}

@media (min-width: 980px) {
  .page-privacy .privacy-layout {
    grid-template-columns: minmax(0, 1fr) 264px;
    grid-template-areas: "doc toc";
    column-gap: clamp(32px, 5vw, 72px);
  }

  .page-privacy .privacy-toc {
    position: sticky;
    top: 96px;
    align-self: start;
  }

  .page-privacy .privacy-doc {
    max-width: 70ch;
  }

  .page-privacy .info-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-privacy .contact-strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-privacy .strip-title,
  .page-privacy .strip-note {
    grid-column: 1 / -1;
  }

  .page-privacy .contact-item--wide {
    grid-column: 1 / -1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-privacy .toc-list a,
  .page-privacy .top-link {
    transition: none;
  }
}
</main>