/* ===== 数据与隐私保护页面专属样式 ===== */
.page-privacy {
  --privacy-ink: #0B1B3F;
  --privacy-soft: #F8FAFC;
  --privacy-gold: rgba(245, 184, 31, 0.55);
  --privacy-line: rgba(11, 27, 63, 0.14);
  position: relative;
  background-color: var(--color-light);
  background-image: radial-gradient(circle at 1px 1px, rgba(11, 27, 63, 0.05) 1px, transparent 0);
  background-size: 26px 26px;
  color: var(--privacy-ink);
  overflow-x: hidden;
}

.page-privacy a {
  color: var(--color-secondary);
  text-decoration-color: rgba(46, 91, 255, 0.35);
  text-underline-offset: 3px;
}

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

/* ---- 顶部 Hero ---- */
.page-privacy__hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 520px;
  padding: 9rem 0 4rem;
  background-color: var(--color-bg);
  background-image:
    radial-gradient(circle at 1px 1px, rgba(244, 247, 251, 0.14) 1px, transparent 0),
    radial-gradient(circle at 22px 36px, rgba(245, 184, 31, 0.08) 1px, transparent 0);
  background-size: 34px 34px, 48px 48px;
  color: var(--color-text);
  overflow: hidden;
}

.page-privacy__hero-media,
.page-privacy__hero-mask {
  position: absolute;
  inset: 0;
}

.page-privacy__hero-media img {
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
  opacity: 0.26;
  transform: scale(1.02);
  filter: saturate(0.9);
}

.page-privacy__hero-mask {
  background: linear-gradient(105deg, rgba(5, 13, 31, 0.96) 0%, rgba(5, 13, 31, 0.72) 48%, rgba(11, 27, 63, 0.36) 100%);
}

.page-privacy__hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--color-accent) 0%, rgba(245, 184, 31, 0.35) 42%, transparent 100%);
  z-index: 3;
}

.page-privacy__hero-inner {
  position: relative;
  z-index: 2;
  width: 100%;
}

.page-privacy .breadcrumb {
  position: relative;
  margin-bottom: 1.75rem;
}

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

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

.page-privacy .breadcrumb .breadcrumb__sep {
  color: rgba(244, 247, 251, 0.35);
}

.page-privacy .breadcrumb [aria-current="page"] {
  color: var(--color-accent);
}

.page-privacy__hero-label {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-data);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin: 0 0 0.8rem;
}

.page-privacy__hero-label::before {
  content: "";
  width: 34px;
  height: 1px;
  background: var(--color-accent);
}

.page-privacy h1 {
  margin: 0 0 1.1rem;
  font-family: var(--font-headline);
  font-size: var(--h1);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.025em;
  color: var(--color-text);
}

.page-privacy__hero-desc {
  max-width: 560px;
  margin: 0;
  font-size: var(--body);
  line-height: 1.85;
  color: rgba(176, 190, 197, 0.95);
}

/* ---- 正文主体 ---- */
.page-privacy__body {
  padding: 3.5rem 0 5.5rem;
}

.page-privacy__intro p:first-child {
  font-size: 1.125rem;
  line-height: 2;
  color: var(--privacy-ink);
  margin: 0;
}

/* ---- 金色边框引用 ---- */
.page-privacy__statement {
  margin: 2.25rem 0 2.5rem;
  padding: 1.5rem 1.75rem 1.5rem 2rem;
  border: 0;
  border-left: 4px solid var(--color-accent);
  border-top: 1px solid var(--privacy-gold);
  border-right: 1px solid var(--privacy-gold);
  border-bottom: 1px solid var(--privacy-gold);
  background: linear-gradient(90deg, rgba(245, 184, 31, 0.12), rgba(245, 184, 31, 0.025));
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--privacy-ink);
}

.page-privacy__statement p {
  margin: 0;
}

/* ---- 章节 ---- */
.page-privacy__chapter {
  border-top: 2px solid var(--privacy-ink);
  padding: 2.75rem 0 3rem;
  scroll-margin-top: 110px;
}

.page-privacy__chapter-head {
  display: grid;
  grid-template-columns: auto auto 1fr;
  gap: 0.5rem 0.9rem;
  align-items: center;
  margin-bottom: 1.5rem;
}

.page-privacy__constellation {
  display: inline-flex;
  align-items: center;
}

.page-privacy__constellation i {
  flex: none;
  width: 7px;
  height: 7px;
  background: var(--color-accent);
  position: relative;
  margin-right: 24px;
}

.page-privacy__constellation i:last-child {
  margin-right: 0;
}

.page-privacy__constellation i::after {
  content: "";
  position: absolute;
  left: 7px;
  top: calc(50% - 0.5px);
  width: 24px;
  height: 1px;
  background: linear-gradient(90deg, rgba(245, 184, 31, 0.75), rgba(245, 184, 31, 0.2));
}

.page-privacy__constellation i:last-child::after {
  display: none;
}

.page-privacy__chapter-num {
  font-family: var(--font-data);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  line-height: 1;
  color: var(--color-text);
  background: var(--color-primary);
  border: 1px solid rgba(245, 184, 31, 0.45);
  padding: 0.5rem 0.6rem;
}

.page-privacy__chapter-head h2 {
  grid-column: 1 / -1;
  margin: 0.15rem 0 0;
  font-family: var(--font-headline);
  font-size: var(--h3);
  font-weight: 900;
  letter-spacing: -0.015em;
  line-height: 1.2;
  color: var(--privacy-ink);
}

.page-privacy__chapter-body > p {
  font-size: 1rem;
  line-height: 1.9;
  color: rgba(11, 27, 63, 0.86);
  margin: 0 0 1.25rem;
}

/* ---- 信息项网格 ---- */
.page-privacy__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem 1.5rem;
  margin: 1.6rem 0;
}

.page-privacy__item {
  border-top: 1px solid var(--privacy-line);
  padding-top: 1.15rem;
  margin-top: 0.35rem;
}

.page-privacy__item h3 {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  font-weight: 900;
  color: var(--privacy-ink);
  line-height: 1.35;
}

.page-privacy__item h3::before {
  content: "";
  flex: none;
  width: 8px;
  height: 8px;
  background: var(--color-accent);
}

.page-privacy__item p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: rgba(11, 27, 63, 0.8);
}

/* ---- 列表 ---- */
.page-privacy__list {
  list-style: none;
  margin: 1.6rem 0;
  padding: 0;
}

.page-privacy__list li {
  position: relative;
  padding: 0.9rem 0 0.9rem 2.1rem;
  border-bottom: 1px solid rgba(11, 27, 63, 0.09);
  line-height: 1.8;
  font-size: 0.9375rem;
  color: rgba(11, 27, 63, 0.85);
}

.page-privacy__list li:last-child {
  border-bottom: 0;
}

.page-privacy__list li::before {
  content: "";
  position: absolute;
  left: 0.5rem;
  top: 1.5rem;
  width: 7px;
  height: 7px;
  background: var(--color-secondary);
  transform: rotate(45deg);
}

.page-privacy__list strong {
  font-weight: 900;
  color: var(--privacy-ink);
}

/* ---- 特别说明 ---- */
.page-privacy__note {
  margin-top: 1.5rem;
  padding: 0.95rem 1.15rem;
  background: rgba(46, 91, 255, 0.06);
  border-left: 3px solid var(--color-secondary);
  font-size: 0.9375rem;
  line-height: 1.8;
  color: rgba(11, 27, 63, 0.78);
}

/* ---- 更新说明 ---- */
.page-privacy__update {
  border-top: 2px solid var(--privacy-ink);
  padding-top: 2rem;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: rgba(11, 27, 63, 0.72);
}

.page-privacy__update p {
  margin: 0;
}

/* ---- 返回顶部 ---- */
.page-privacy__backtop {
  position: fixed;
  right: 1.25rem;
  bottom: 1.5rem;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  background: rgba(11, 27, 63, 0.94);
  color: var(--color-text);
  border: 1px solid var(--color-accent);
  box-shadow: 0 6px 22px rgba(5, 13, 31, 0.28);
  text-decoration: none;
  transition: background 0.25s var(--ease-out), transform 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out);
}

.page-privacy__backtop:hover,
.page-privacy__backtop:focus-visible {
  background: var(--color-primary);
  transform: translateY(-3px);
  box-shadow: 0 10px 26px rgba(5, 13, 31, 0.34);
}

/* ---- 桌面端扩展 ---- */
@media (min-width: 720px) {
  .page-privacy__hero {
    min-height: 580px;
    padding: 10rem 0 5rem;
  }

  .page-privacy__hero-label {
    font-size: 0.875rem;
  }

  .page-privacy__body {
    padding-top: 4.5rem;
    padding-bottom: 6.5rem;
  }

  .page-privacy__chapter {
    padding: 3.25rem 0 3.5rem;
  }

  .page-privacy__chapter-head {
    margin-bottom: 1.75rem;
  }

  .page-privacy__chapter-head h2 {
    grid-column: auto;
    margin: 0;
  }

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

  .page-privacy__grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1040px) {
  .page-privacy__hero {
    min-height: 620px;
    padding: 11.5rem 0 5.5rem;
  }

  .page-privacy__hero-desc {
    font-size: 1.125rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-privacy__backtop,
  .page-privacy__hero-media img {
    transition: none;
    transform: none;
    animation: none;
  }
}