.page-privacy {
  background: var(--c-space);
  color: var(--c-warm);
}

/* ---------- Hero ---------- */
.page-privacy .privacy-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(1.75rem, 4vw, 2.75rem) 0 clamp(2rem, 5vw, 3.25rem);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(59, 42, 107, 0.85) 0%, rgba(59, 42, 107, 0) 62%),
    radial-gradient(90% 80% at 4% 100%, rgba(14, 59, 58, 0.72) 0%, rgba(14, 59, 58, 0) 58%),
    var(--c-space);
}

.page-privacy .privacy-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(201, 208, 220, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201, 208, 220, 0.07) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, rgba(0, 0, 0, 0.15) 78%, transparent 100%);
  mask-image: linear-gradient(180deg, #000 0%, rgba(0, 0, 0, 0.15) 78%, transparent 100%);
  pointer-events: none;
}

.page-privacy .privacy-hero__inner {
  position: relative;
}

.page-privacy .privacy-hero__title {
  margin: 0.9rem 0 1.1rem;
  max-width: 15em;
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(2.3rem, 8vw, 5rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--c-warm);
}

.page-privacy .privacy-hero__lead {
  max-width: 58ch;
  margin: 0;
  font-size: clamp(1rem, 1.5vw, 1.12rem);
  line-height: 1.85;
  color: rgba(245, 241, 232, 0.78);
}

.page-privacy .privacy-hero__figure {
  position: relative;
  margin: clamp(1.75rem, 4vw, 2.75rem) 0 0;
  border: var(--line-mid);
  overflow: hidden;
  background: rgba(10, 26, 47, 0.6);
}

.page-privacy .privacy-hero__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-privacy .privacy-hero__figure::after {
  content: "数据流 / 01";
  position: absolute;
  right: 0;
  bottom: 0;
  padding: 0.32rem 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  color: var(--c-space);
  background: var(--c-mint);
}

/* ---------- Paper .page-privacy ---------- */
.page-privacy .privacy-paper {
  background: var(--c-warm);
  color: var(--c-ink);
  border-top: 3px solid var(--c-signal);
  padding: clamp(2rem, 5vw, 4rem) 0 clamp(3rem, 7vw, 5.5rem);
}

.page-privacy .privacy-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 2.5rem);
}

/* ---------- Index ---------- */
.page-privacy .privacy-index {
  border-top: 1px solid rgba(11, 13, 18, 0.22);
  padding-top: 0.9rem;
}

.page-privacy .privacy-index__title {
  margin: 0 0 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(11, 13, 18, 0.55);
}

.page-privacy .privacy-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: 1rem;
}

.page-privacy .privacy-index__link {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.5rem 0;
  font-size: 0.88rem;
  line-height: 1.5;
  color: #23262e;
  text-decoration: none;
  border-bottom: 1px solid rgba(11, 13, 18, 0.12);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-privacy .privacy-index__no {
  flex: 0 0 auto;
  font-size: 0.68rem;
  color: var(--c-wine);
}

.page-privacy .privacy-index__link:hover,
.page-privacy .privacy-index__link:focus-visible {
  color: var(--c-wine);
  border-bottom-color: var(--c-signal);
  transform: translateX(2px);
}

/* ---------- Document ---------- */
.page-privacy .privacy-doc {
  max-width: 70ch;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.85;
  color: var(--c-ink);
}

.page-privacy .privacy-doc p {
  margin: 0 0 0.9rem;
}

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

.page-privacy .privacy-doc a {
  color: var(--c-indi);
  text-decoration: underline;
  text-underline-offset: 0.2em;
  text-decoration-color: rgba(255, 122, 51, 0.75);
  transition: color 0.2s var(--ease);
}

.page-privacy .privacy-doc a:hover,
.page-privacy .privacy-doc a:focus-visible {
  color: var(--c-wine);
}

.page-privacy .privacy-clause {
  padding: clamp(1.4rem, 3.5vw, 2.1rem) 0;
  border-top: 1px solid rgba(11, 13, 18, 0.16);
  scroll-margin-top: 88px;
}

.page-privacy .privacy-clause:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-privacy .privacy-clause__head {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin: 0 0 0.85rem;
}

.page-privacy .privacy-clause__no {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--c-wine);
}

.page-privacy .privacy-clause__title {
  margin: 0;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: clamp(1.1rem, 2.2vw, 1.35rem);
  line-height: 1.4;
  letter-spacing: -0.01em;
}

.page-privacy .privacy-terms {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.8rem;
}

.page-privacy .privacy-terms > li {
  position: relative;
  padding-left: 1.15rem;
  line-height: 1.8;
  overflow-wrap: anywhere;
}

.page-privacy .privacy-terms > li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 0.38rem;
  height: 0.38rem;
  background: var(--c-signal);
}

.page-privacy .privacy-terms > li strong {
  color: var(--c-indi);
  font-weight: 700;
}

.page-privacy .data-tags {
  list-style: none;
  margin: 1.15rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.page-privacy .data-tags li {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  padding: 0.3rem 0.55rem;
  border: 1px solid rgba(11, 13, 18, 0.25);
  background: rgba(201, 208, 220, 0.22);
  color: rgba(11, 13, 18, 0.8);
}

/* ---------- Details ---------- */
.page-privacy .privacy-details {
  margin-top: 1.1rem;
  border: 1px solid rgba(11, 13, 18, 0.2);
  background: rgba(255, 255, 255, 0.62);
}

.page-privacy .privacy-details summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem 1rem;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  list-style: none;
  transition: background-color 0.2s var(--ease);
}

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

.page-privacy .privacy-details summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1rem;
  line-height: 1;
  color: var(--c-signal);
}

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

.page-privacy .privacy-details summary:hover {
  background: rgba(201, 208, 220, 0.28);
}

.page-privacy .privacy-details__body {
  padding: 0.85rem 1rem 1rem;
  border-top: 1px solid rgba(11, 13, 18, 0.12);
  font-size: 0.95rem;
  line-height: 1.8;
}

.page-privacy .privacy-details__body .privacy-terms {
  margin-top: 0;
}

/* ---------- Contact card ---------- */
.page-privacy .privacy-contact-card {
  margin-top: 1.2rem;
  padding: clamp(1.1rem, 3vw, 1.6rem);
  background: var(--c-indi);
  color: var(--c-warm);
  border-left: 3px solid var(--c-signal);
}

.page-privacy .privacy-contact-card p {
  color: rgba(245, 241, 232, 0.85);
}

.page-privacy .privacy-contact-list {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}

.page-privacy .privacy-contact-list li {
  display: grid;
  gap: 0.15rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid rgba(245, 241, 232, 0.16);
  font-size: 0.96rem;
  overflow-wrap: anywhere;
}

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

.page-privacy .privacy-contact-list span {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  color: var(--c-mint);
}

/* ---------- Desktop ---------- */
@media (min-width: 900px) {
  .page-privacy .privacy-hero {
    padding-top: clamp(2.5rem, 5vw, 4rem);
  }

  .page-privacy .privacy-layout {
    grid-template-columns: 216px minmax(0, 1fr);
    gap: clamp(2rem, 5vw, 4.5rem);
    align-items: start;
  }

  .page-privacy .privacy-index {
    position: sticky;
    top: 96px;
  }

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

  .page-privacy .privacy-clause {
    scroll-margin-top: 104px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-privacy .privacy-index__link,
  .page-privacy .privacy-details summary,
  .page-privacy .privacy-doc a {
    transition: none;
  }

  .page-privacy .privacy-index__link:hover,
  .page-privacy .privacy-index__link:focus-visible {
    transform: none;
  }
}