.page-privacy {
  --hero-bg: var(--deep-space);
  --hero-grid-line: rgba(255, 255, 255, 0.07);
  --accent-glow: rgba(255, 77, 0, 0.35);
  --card-pad: clamp(1.25rem, 3vw, 2.5rem);
  --num-size: clamp(2.25rem, 4vw, 3rem);
  --list-gap: clamp(0.875rem, 2vw, 1.375rem);
  color: var(--ink);
}

.page-privacy .container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

/* ===================== Hero 页首 ===================== */
.page-privacy .privacy-hero {
  background-color: var(--hero-bg);
  position: relative;
  overflow: hidden;
  padding-block: clamp(3rem, 6vw, 5.5rem) clamp(2.5rem, 5vw, 4.5rem);
}

.page-privacy .privacy-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--hero-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--hero-grid-line) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 70% at 30% 30%, #000 30%, transparent 75%);
  pointer-events: none;
}

.page-privacy .privacy-hero::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 38%;
  height: 6px;
  background: linear-gradient(90deg, var(--primary), var(--electric-yellow));
}

.page-privacy .privacy-hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.page-privacy .privacy-hero__breadcrumb {
  margin-bottom: 1.25rem;
}

.page-privacy .privacy-hero__tag {
  display: inline-block;
  margin-bottom: 1rem;
  border-color: var(--electric-yellow);
  color: var(--electric-yellow);
}

.page-privacy .privacy-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 6vw, 4.5rem);
  font-weight: 900;
  font-style: italic;
  line-height: 1.1;
  color: #ffffff;
  letter-spacing: -0.02em;
}

.page-privacy .privacy-hero__lead {
  margin-top: 1.25rem;
  margin-bottom: 0;
  font-family: var(--font-display);
  font-size: clamp(1rem, 1.6vw, 1.25rem);
  font-weight: 400;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.82);
  max-width: 44em;
}

.page-privacy .privacy-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  margin-top: 1.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.page-privacy .privacy-hero__meta-item {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.7);
  text-transform: uppercase;
}

.page-privacy .privacy-hero__meta-item + .privacy-hero__meta-item::before {
  content: "//";
  margin-right: 1.5rem;
  color: var(--primary);
  font-weight: 700;
}

.page-privacy .privacy-hero__visual {
  position: relative;
  max-width: 380px;
  margin-inline: auto;
  width: 100%;
}

.page-privacy .privacy-hero__visual::before {
  content: "";
  display: block;
  position: absolute;
  inset: 10% -6% -6% 10%;
  background: linear-gradient(135deg, var(--accent-glow), transparent 70%);
  filter: blur(20px);
  z-index: 0;
}

.page-privacy .privacy-hero__visual::after {
  content: "";
  display: block;
  position: absolute;
  width: 78%;
  height: 110%;
  border: 1px solid var(--primary);
  right: -8%;
  top: -6%;
  transform: skew(-8deg);
  z-index: 0;
  opacity: 0.35;
}

.page-privacy .privacy-hero__img {
  position: relative;
  width: 100%;
  height: auto;
  border-radius: var(--r-lg);
  object-fit: cover;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.1);
  z-index: 1;
}

/* ===================== 目录导航 ===================== */
.page-privacy .privacy-toc {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  position: relative;
  z-index: 5;
}

.page-privacy .privacy-toc__inner {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding-block: 1.25rem;
}

.page-privacy .privacy-toc__label {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted-ink);
  font-weight: 500;
}

.page-privacy .privacy-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  column-gap: 0.5rem;
  row-gap: 0.5rem;
}

.page-privacy .privacy-toc__item {
  margin: 0;
}

.page-privacy .privacy-toc__link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: var(--r-full);
  padding: 0.45rem 0.9rem;
  background: rgba(255, 255, 255, 0.6);
  transition: border-color var(--t-fast), color var(--t-fast), background var(--t-fast), transform var(--t-fast);
}

.page-privacy .privacy-toc__link:hover {
  border-color: var(--primary);
  color: var(--primary-dark);
  background: #ffffff;
  transform: translateY(-2px);
}

.page-privacy .privacy-toc__link:focus-visible {
  outline: 2px solid var(--electric-yellow);
  outline-offset: 3px;
}

/* ===================== 章节卡片通用 ===================== */
.page-privacy .privacy-section {
  padding-block: clamp(2rem, 4vw, 3.5rem);
  background: var(--paper);
}

.page-privacy .privacy-section--split {
  background: var(--deep-space);
  position: relative;
}

.page-privacy .privacy-section--split::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--electric-yellow) 60%, var(--deep-space) 100%);
  opacity: 0.8;
}

.page-privacy .privacy-card {
  background: #ffffff;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  padding: var(--card-pad);
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(18, 22, 31, 0.05);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.page-privacy .privacy-card[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.page-privacy .privacy-card[data-reveal][data-revealed="true"] {
  opacity: 1;
  transform: translateY(0);
}

.page-privacy .privacy-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 5px;
  height: 100%;
  background: linear-gradient(180deg, var(--primary), var(--electric-yellow));
  opacity: 0.9;
}

.page-privacy .privacy-card--dark {
  background: var(--deep-space);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.3);
}

.page-privacy .privacy-card__head {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.page-privacy .privacy-card__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: var(--num-size);
  height: var(--num-size);
  border-radius: 50%;
  background: var(--primary);
  color: #ffffff;
  font-family: var(--font-mono);
  font-size: calc(var(--num-size) * 0.45);
  font-weight: 700;
  box-shadow: 0 0 0 4px var(--accent-glow);
}

.page-privacy .privacy-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.6vw, 2.25rem);
  font-weight: 800;
  line-height: 1.25;
  color: var(--ink);
}

.page-privacy .privacy-card--dark .privacy-card__title {
  color: #ffffff;
}

.page-privacy .privacy-card__text {
  margin: 0 0 1rem;
  font-size: clamp(1rem, 1.2vw, 1.125rem);
  line-height: 1.85;
  color: var(--ink);
}

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

.page-privacy .privacy-card__text--light {
  color: rgba(255, 255, 255, 0.82);
}

.page-privacy .privacy-card__text--contact {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px dashed var(--line);
  font-size: 0.98rem;
  color: var(--muted-ink);
}

/* ===================== 收集信息列表 ===================== */
.page-privacy .privacy-list {
  list-style: none;
  margin: 1.25rem 0 0;
  padding: 0;
  display: grid;
  gap: var(--list-gap);
}

.page-privacy .privacy-list__item {
  border-bottom: 1px dashed var(--line);
  padding-bottom: 1rem;
}

.page-privacy .privacy-list__item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-privacy .privacy-list__title {
  margin: 0 0 0.25rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ink);
}

.page-privacy .privacy-list--compact {
  grid-template-columns: 1fr;
}

.page-privacy .privacy-list__desc {
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.75;
  color: var(--muted-ink);
}

.page-privacy .privacy-card__note {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-top: 1.5rem;
  padding: 1rem 1.25rem;
  background: rgba(255, 77, 0, 0.07);
  border-left: 3px solid var(--primary);
  border-radius: 0 var(--r-md) var(--r-md) 0;
}

.page-privacy .privacy-card__note-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-weight: 800;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  flex-shrink: 0;
}

.page-privacy .privacy-card__note-text {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--ink);
}

.page-privacy .privacy-card__note-text a {
  color: var(--primary-dark);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ===================== 信息使用编号列表 ===================== */
.page-privacy .privacy-usage {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-privacy .privacy-usage__item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--r-md);
  padding: 1rem 1.25rem;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.page-privacy .privacy-usage__item:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: var(--primary);
}

.page-privacy .privacy-usage__index {
  flex-shrink: 0;
  min-width: 2rem;
  color: var(--electric-yellow);
  font-size: 0.8rem;
  font-weight: 700;
  padding-top: 0.2rem;
}

.page-privacy .privacy-usage__title {
  margin: 0 0 0.25rem;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: #ffffff;
}

.page-privacy .privacy-usage__desc {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.7);
}

/* ===================== 用户权利 ===================== */
.page-privacy .privacy-rights {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: 1.5rem;
}

.page-privacy .privacy-rights__item {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 1.25rem;
  position: relative;
  transition: background 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
}

.page-privacy .privacy-rights__item:hover {
  background: rgba(255, 77, 0, 0.05);
  border-color: var(--primary);
  transform: translateY(-4px);
}

.page-privacy .privacy-rights__mark {
  display: inline-block;
  width: 2rem;
  height: 2rem;
  border-radius: 8px;
  background: var(--primary);
  color: #ffffff;
  font-size: 0.85rem;
  font-weight: 800;
  text-align: center;
  line-height: 2rem;
  margin-bottom: 0.75rem;
}

.page-privacy .privacy-rights__title {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ink);
}

.page-privacy .privacy-rights__desc {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--muted-ink);
}

.page-privacy .privacy-inline-link {
  color: var(--primary-dark);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ===================== 政策更新时间轴 ===================== */
.page-privacy .privacy-update__timeline {
  margin-top: 2rem;
  display: grid;
  gap: 1rem;
}

.page-privacy .privacy-update__point {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 0.9rem;
  align-items: start;
  padding: 1.1rem 1.25rem;
  background: rgba(255, 255, 255, 0.5);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  position: relative;
}

.page-privacy .privacy-update__point::before {
  content: "";
  position: absolute;
  left: 1.6rem;
  top: 100%;
  height: 1rem;
  width: 1px;
  background: var(--line);
}

.page-privacy .privacy-update__point:last-child::before {
  display: none;
}

.page-privacy .privacy-update__dot {
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  background: var(--line);
  grid-row: span 2;
  margin-top: 0.35rem;
  margin-left: 0.4rem;
}

.page-privacy .privacy-update__dot--active {
  background: var(--primary);
  box-shadow: 0 0 0 4px rgba(255, 77, 0, 0.18);
}

.page-privacy .privacy-update__label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--primary-dark);
  font-weight: 700;
}

.page-privacy .privacy-update__desc {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--muted-ink);
  grid-column: 2;
}

/* ===================== 页尾承诺区 ===================== */
.page-privacy .privacy-footer {
  background: var(--deep-space);
  color: #ffffff;
  padding-block: clamp(2.25rem, 5vw, 4.5rem);
  position: relative;
  overflow: hidden;
}

.page-privacy .privacy-footer::before {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: linear-gradient(135deg, var(--primary), var(--electric-yellow), var(--primary-dark));
}

.page-privacy .privacy-footer__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.page-privacy .privacy-footer__tag {
  display: inline-block;
  margin-bottom: 1rem;
}

.page-privacy .privacy-footer__text {
  margin: 0 0 1.5rem;
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.88);
  max-width: 32em;
}

.page-privacy .privacy-footer__contact {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 2.1;
  color: rgba(255, 255, 255, 0.68);
}

.page-privacy .privacy-footer__meta {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.page-privacy .privacy-footer__note {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.72);
  max-width: 42em;
}

.page-privacy .privacy-footer__note a {
  color: var(--electric-yellow);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-privacy .privacy-footer__icp {
  margin: 0;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.45);
}

/* ===================== 响应式增强 ===================== */
@media (min-width: 768px) {
  .page-privacy .privacy-hero__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  }

  .page-privacy .privacy-hero__visual {
    margin-inline: 0;
    margin-left: auto;
  }

  .page-privacy .privacy-toc__inner {
    flex-direction: row;
    align-items: center;
    gap: 1.5rem;
  }

  .page-privacy .privacy-toc__label {
    flex-shrink: 0;
  }

  .page-privacy .privacy-card__body {
    padding-left: calc(var(--num-size) + 1rem);
  }

  .page-privacy .privacy-list--compact {
    grid-template-columns: 1fr 1fr;
    column-gap: 2rem;
  }

  .page-privacy .privacy-rights {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-privacy .privacy-update__timeline {
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }

  .page-privacy .privacy-footer__inner {
    grid-template-columns: minmax(0, 1.2fr) minmax(220px, 0.8fr);
    align-items: start;
  }

  .page-privacy .privacy-footer__meta {
    border-top: 0;
    padding-top: 0.25rem;
    border-left: 1px solid rgba(255, 255, 255, 0.12);
    padding-left: 2rem;
  }
}

@media (min-width: 1024px) {
  .page-privacy .privacy-section {
    padding-block: clamp(3rem, 5vw, 4.5rem);
  }

  .page-privacy .privacy-rights {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-privacy .privacy-usage {
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-privacy .privacy-card,
  .page-privacy .privacy-card[data-reveal] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  .page-privacy .privacy-rights__item,
  .page-privacy .privacy-usage__item,
  .page-privacy .privacy-toc__link {
    transition: none;
    transform: none;
  }
}