/* ==========================================================
   隐私中心 / privacy
   ========================================================== */

.page-privacy {
  --pv-measure: 700px;
  --pv-rail-w: 32px;
  --pv-body-bg: #0A1730;
  position: relative;
  padding-bottom: 72px;
  color: var(--text);
}

/* ---------- 首屏 ---------- */

.page-privacy .pv-hero {
  position: relative;
  overflow: hidden;
  padding: 36px 0 44px;
  background:
    radial-gradient(900px 420px at 84% -12%, rgba(47, 240, 208, .10), transparent 70%),
    radial-gradient(720px 400px at 6% 6%, rgba(255, 122, 47, .07), transparent 72%),
    var(--void);
  border-bottom: 1px solid var(--grid);
}

.page-privacy .pv-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(30, 58, 95, .5) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30, 58, 95, .5) 1px, transparent 1px);
  background-size: 96px 96px;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, .85), transparent 78%);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, .85), transparent 78%);
  pointer-events: none;
}

.page-privacy .pv-hero::after {
  content: "";
  position: absolute;
  left: -8%;
  top: 30%;
  width: 120%;
  height: 150px;
  background: linear-gradient(90deg, rgba(47, 240, 208, .13), rgba(47, 240, 208, 0) 66%);
  transform: rotate(-5deg);
  pointer-events: none;
}

.page-privacy .pv-hero .shell {
  position: relative;
  z-index: 1;
}

/* 面包屑 */

.page-privacy .crumbs {
  margin-bottom: 26px;
  font-size: var(--fs-2);
}

.page-privacy .crumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--text-dim);
}

.page-privacy .crumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--grid);
}

.page-privacy .crumbs a {
  color: var(--text-dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-privacy .crumbs a:hover,
.page-privacy .crumbs a:focus-visible {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

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

/* 标题区 */

.page-privacy .pv-hero__title {
  margin: 14px 0 0;
  max-width: 900px;
  font-size: clamp(30px, 6.4vw, 58px);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-privacy .pv-hero__lead {
  margin: 20px 0 0;
  max-width: 640px;
  font-size: var(--fs-3);
  line-height: 1.8;
  color: var(--text-dim);
}

.page-privacy .pv-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 30px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  font-size: var(--fs-2);
  color: var(--text-dim);
}

.page-privacy .pv-hero__facts li {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
}

.page-privacy .pv-hero__facts .mono {
  font-size: var(--fs-4);
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.02em;
}

/* 首屏主图 */

.page-privacy .pv-hero__media {
  position: relative;
  margin-top: 38px;
  border: 1px solid var(--grid);
  border-radius: var(--r-lg);
  overflow: hidden;
  aspect-ratio: 1200 / 500;
  background: linear-gradient(135deg, var(--deep), var(--track));
}

.page-privacy .pv-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 正文骨架 ---------- */

.page-privacy .pv-body {
  padding-top: 52px;
}

.page-privacy .pv-body__grid {
  max-width: var(--pv-measure);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
}

.page-privacy .pv-doc {
  min-width: 0;
}

/* ---------- 右侧等宽索引带 ---------- */

.page-privacy .pv-rail {
  display: none;
  position: relative;
}

@media (min-width: 980px) {
  .page-privacy .pv-body__grid {
    max-width: calc(var(--pv-measure) + var(--pv-rail-w) + 40px);
    grid-template-columns: minmax(0, var(--pv-measure)) var(--pv-rail-w);
    column-gap: 40px;
    align-items: start;
  }

  .page-privacy .pv-rail {
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: center;
    position: sticky;
    top: 104px;
    align-self: start;
    padding: 2px 0;
  }

  .page-privacy .pv-rail::before {
    content: "";
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 1px;
    background: var(--grid);
    transform: translateX(-50%);
  }
}

.page-privacy .pv-rail__item {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--pv-rail-w);
  height: 30px;
  border-radius: var(--r-pill);
  background: var(--void);
  color: var(--text-dim);
  font-size: var(--fs-1);
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-privacy .pv-rail__item:hover,
.page-privacy .pv-rail__item:focus-visible,
.page-privacy .pv-rail__item.is-active,
.page-privacy .pv-rail__item[aria-current="true"] {
  background: var(--accent);
  color: var(--void);
}

/* ---------- 章节 ---------- */

.page-privacy .pv-sec {
  padding: 34px 0 6px;
}

.page-privacy .pv-sec + .pv-sec {
  border-top: 1px solid var(--grid);
}

.page-privacy .pv-sec__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 18px;
}

.page-privacy .pv-sec__num {
  flex: 0 0 auto;
  padding: 3px 10px;
  border: 1px solid var(--grid);
  border-radius: var(--r-pill);
  font-size: var(--fs-1);
  letter-spacing: 0.08em;
  color: var(--amber);
  background: rgba(18, 42, 74, .5);
}

.page-privacy .pv-sec__title {
  margin: 0;
  font-size: clamp(21px, 3.6vw, 28px);
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--text);
}

/* ---------- 可展开条目组 ---------- */

.page-privacy .pv-fold {
  border: 1px solid var(--grid);
  border-radius: var(--r-md);
  background: linear-gradient(180deg, rgba(18, 42, 74, .58), rgba(10, 23, 48, .32));
  overflow: hidden;
}

.page-privacy .pv-fold > summary {
  display: block;
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 18px 52px 18px 20px;
  border-left: 3px solid var(--accent);
  font-size: var(--fs-3);
  font-weight: 700;
  line-height: 1.75;
  color: var(--text);
  transition: background-color var(--dur) var(--ease);
}

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

.page-privacy .pv-fold > summary::marker {
  content: "";
}

.page-privacy .pv-fold > summary:hover {
  background: rgba(47, 240, 208, .06);
}

.page-privacy .pv-fold > summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.page-privacy .pv-fold > summary::after {
  content: "";
  position: absolute;
  right: 22px;
  top: 50%;
  width: 8px;
  height: 8px;
  margin-top: -6px;
  border-right: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
  transform: rotate(45deg);
  transition: transform var(--dur) var(--ease);
}

.page-privacy .pv-fold[open] > summary::after {
  transform: rotate(-135deg);
  margin-top: -2px;
}

/* ---------- 条目列表 ---------- */

.page-privacy .pv-list {
  margin: 0;
  padding: 0 20px 12px 20px;
  list-style: none;
}

.page-privacy .pv-list > li {
  padding: 16px 0;
}

.page-privacy .pv-list > li + li {
  border-top: 1px dashed var(--grid);
}

.page-privacy .pv-list__key {
  display: flex;
  align-items: center;
  margin: 0 0 6px;
  font-size: var(--fs-3);
  font-weight: 700;
  color: var(--text);
}

.page-privacy .pv-list__key::before {
  content: "";
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  margin-right: 10px;
  border-radius: 50%;
  background: var(--accent);
}

.page-privacy .pv-list__val {
  margin: 0;
  font-size: var(--fs-3);
  line-height: 1.78;
  color: var(--text-dim);
}

.page-privacy .pv-list__val a {
  color: var(--accent-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(143, 246, 228, .45);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-privacy .pv-list__val a:hover,
.page-privacy .pv-list__val a:focus-visible {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ---------- 相关页面 ---------- */

.page-privacy .pv-next {
  display: grid;
  gap: 12px;
  margin-top: 46px;
  padding-top: 28px;
  border-top: 1px solid var(--grid);
}

.page-privacy .pv-next__link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  border: 1px solid var(--grid);
  border-radius: var(--r-md);
  background: rgba(18, 42, 74, .38);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-privacy .pv-next__link:hover,
.page-privacy .pv-next__link:focus-visible {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.page-privacy .pv-next__link .mono {
  font-size: var(--fs-1);
  letter-spacing: 0.08em;
  color: var(--accent);
}

.page-privacy .pv-next__link strong {
  font-size: var(--fs-2);
  font-weight: 700;
  line-height: 1.6;
  color: var(--text-dim);
}

@media (min-width: 640px) {
  .page-privacy .pv-next {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 窄屏收尾 ---------- */

@media (max-width: 639px) {
  .page-privacy .pv-hero {
    padding: 28px 0 36px;
  }

  .page-privacy .pv-hero__facts {
    gap: 10px 20px;
    font-size: var(--fs-1);
  }

  .page-privacy .pv-hero__facts .mono {
    font-size: var(--fs-3);
  }

  .page-privacy .pv-hero__media {
    margin-top: 28px;
    aspect-ratio: 16 / 9;
    border-radius: var(--r-md);
  }

  .page-privacy .pv-body {
    padding-top: 36px;
  }

  .page-privacy .pv-sec {
    padding-top: 28px;
  }

  .page-privacy .pv-fold > summary {
    padding: 15px 44px 15px 16px;
    font-size: var(--fs-2);
  }

  .page-privacy .pv-list {
    padding: 0 16px 10px 16px;
  }

  .page-privacy .pv-list__val {
    font-size: var(--fs-2);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-privacy .pv-fold > summary,
  .page-privacy .pv-fold > summary::after,
  .page-privacy .pv-next__link,
  .page-privacy .pv-rail__item {
    transition: none;
  }
}