.page-privacy {
  --pv-rail-w: 252px;
  --pv-doc-w: 74ch;
  background: var(--by-forest);
  color: var(--by-text);
  font-family: var(--by-font-body);
  overflow-x: hidden;
}

/* ---------- 封面 ---------- */
.page-privacy .pv-cover {
  position: relative;
  padding: clamp(20px, 4vw, 38px) 0 clamp(30px, 5vw, 56px);
  border-bottom: 1px solid var(--by-line);
  background-color: var(--by-ink);
  background-image:
    repeating-linear-gradient(90deg, rgba(42, 59, 51, 0.55) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(0deg, rgba(42, 59, 51, 0.32) 0 1px, transparent 1px 96px),
    radial-gradient(120% 95% at 84% -10%, rgba(199, 255, 61, 0.13), transparent 62%);
  overflow: hidden;
}

.page-privacy .pv-cover__grid {
  display: grid;
  gap: clamp(22px, 4vw, 44px);
  margin-top: clamp(18px, 3vw, 30px);
}

.page-privacy .pv-cover h1 {
  font-family: var(--by-font-display);
  font-weight: 800;
  font-size: clamp(34px, 6.2vw, 68px);
  line-height: 1.03;
  letter-spacing: -0.01em;
  margin: 14px 0 16px;
  max-width: 16ch;
  color: var(--by-text);
}

.page-privacy .pv-cover .by-lede {
  max-width: 60ch;
  color: var(--by-muted);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  margin: 0;
}

.page-privacy .pv-cover__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.page-privacy .pv-cover__media {
  position: relative;
  margin: 0;
  border: 1px solid var(--by-line);
  background: var(--by-panel);
  border-radius: var(--by-radius);
  overflow: hidden;
  box-shadow: var(--by-shadow);
}

.page-privacy .pv-cover__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(200deg, rgba(11, 15, 13, 0) 45%, rgba(11, 15, 13, 0.62) 100%);
  pointer-events: none;
}

.page-privacy .pv-cover__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  opacity: 0.92;
  filter: saturate(0.9) contrast(1.05);
}

.page-privacy .pv-cover__media .by-media__tag {
  z-index: 1;
}

/* ---------- 主体布局 ---------- */
.page-privacy .pv-layout {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
  padding-top: clamp(26px, 4vw, 52px);
  padding-bottom: clamp(40px, 6vw, 80px);
}

/* ---------- 条款目录 ---------- */
.page-privacy .pv-rail__inner {
  border: 1px solid var(--by-line);
  border-radius: var(--by-radius);
  padding: 16px 14px 14px;
}

.page-privacy .pv-rail__title {
  font-family: var(--by-font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--by-dim);
  margin: 0 0 10px;
  padding-left: 8px;
}

.page-privacy .pv-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-privacy .pv-rail__link {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 8px 8px 8px 8px;
  border-left: 2px solid transparent;
  border-radius: 0 var(--by-radius) var(--by-radius) 0;
  color: var(--by-muted);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.45;
  transition: color 150ms var(--by-ease), border-color 150ms var(--by-ease), background-color 150ms var(--by-ease);
}

.page-privacy .pv-rail__link:hover,
.page-privacy .pv-rail__link:focus-visible {
  color: var(--by-text);
  border-left-color: var(--by-lime);
  background: rgba(199, 255, 61, 0.07);
  outline: none;
}

.page-privacy .pv-rail__link:focus-visible {
  box-shadow: 0 0 0 2px var(--by-focus);
}

.page-privacy .pv-rail__link[aria-current="true"] {
  color: var(--by-lime);
  border-left-color: var(--by-lime);
  background: rgba(199, 255, 61, 0.1);
}

.page-privacy .pv-rail__num {
  font-family: var(--by-font-mono);
  font-size: 12px;
  color: var(--by-dim);
  letter-spacing: 0.06em;
}

.page-privacy .pv-rail__note {
  margin: 14px 0 0;
  padding: 10px 8px 0;
  border-top: 1px dashed var(--by-line);
  color: var(--by-dim);
  font-size: 12.5px;
  line-height: 1.7;
}

/* ---------- 条款正文 ---------- */
.page-privacy .pv-doc {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
  max-width: var(--pv-doc-w);
  min-width: 0;
}

.page-privacy .pv-sec {
  border-top: 1px solid var(--by-line);
  padding-top: clamp(18px, 3vw, 28px);
  scroll-margin-top: calc(var(--by-header-h) + 24px);
}

.page-privacy .pv-sec__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 12px;
}

.page-privacy .pv-sec__index {
  font-family: var(--by-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--by-ink);
  background: var(--by-lime);
  padding: 2px 7px;
  border-radius: var(--by-radius);
  flex: none;
}

.page-privacy .pv-sec__title {
  font-family: var(--by-font-display);
  font-weight: 700;
  font-size: clamp(21px, 3.1vw, 30px);
  line-height: 1.18;
  letter-spacing: 0.01em;
  margin: 0;
  color: var(--by-text);
}

.page-privacy .pv-sec p {
  color: var(--by-muted);
  font-size: 15.5px;
  line-height: 1.78;
  margin: 0 0 12px;
}

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

.page-privacy .pv-sec__foot {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--by-line-soft);
  font-size: 14.5px;
}

/* ---------- 定义卡片 ---------- */
.page-privacy .pv-defs {
  display: grid;
  gap: 12px;
  margin: 16px 0 16px;
}

.page-privacy .pv-def {
  background: var(--by-panel);
  border: 1px solid var(--by-line);
  border-left: 3px solid var(--by-lime);
  border-radius: var(--by-radius);
  padding: 14px 16px 6px;
}

.page-privacy .pv-def h3 {
  font-family: var(--by-font-display);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: 0.02em;
  margin: 0 0 6px;
  color: var(--by-text);
}

.page-privacy .pv-def p {
  font-size: 14.5px;
  line-height: 1.72;
  margin: 0 0 8px;
}

/* ---------- 用途流程 ---------- */
.page-privacy .pv-flow {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
}

.page-privacy .pv-flow li {
  position: relative;
  margin-left: 8px;
  padding: 0 0 18px 28px;
  border-left: 1px solid var(--by-line);
  color: var(--by-muted);
  font-size: 15px;
  line-height: 1.72;
}

.page-privacy .pv-flow li:last-child {
  border-left-color: transparent;
  padding-bottom: 0;
}

.page-privacy .pv-flow li::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 7px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--by-lime);
  box-shadow: 0 0 0 3px rgba(199, 255, 61, 0.14);
}

.page-privacy .pv-flow__label {
  display: block;
  font-family: var(--by-font-display);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 0.02em;
  color: var(--by-text);
  margin-bottom: 2px;
}

/* ---------- 提示条与清单 ---------- */
.page-privacy .pv-hint {
  border-left: 3px solid var(--by-ember);
  background: rgba(255, 107, 61, 0.09);
  border-radius: var(--by-radius);
  padding: 12px 16px;
  margin: 16px 0 0;
  color: var(--by-text);
  font-size: 14.5px;
  line-height: 1.75;
}

.page-privacy .pv-rights {
  list-style: none;
  margin: 16px 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-privacy .pv-rights li {
  background: var(--by-panel-2);
  border: 1px solid var(--by-line);
  border-radius: var(--by-radius);
  padding: 12px 14px;
  color: var(--by-muted);
  font-size: 14.5px;
  line-height: 1.72;
}

.page-privacy .pv-rights strong {
  color: var(--by-text);
  font-weight: 600;
}

/* ---------- 联系卡片 ---------- */
.page-privacy .pv-contact {
  display: grid;
  gap: 12px;
  margin: 18px 0 14px;
  padding: 18px;
  border: 1px solid var(--by-line);
  border-radius: var(--by-radius);
  background: var(--by-glass);
  -webkit-backdrop-filter: blur(7px);
  backdrop-filter: blur(7px);
  box-shadow: var(--by-shadow);
}

.page-privacy .pv-contact__row {
  display: grid;
  gap: 3px;
  min-width: 0;
}

.page-privacy .pv-contact__key {
  font-family: var(--by-font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--by-dim);
}

.page-privacy .pv-contact__val {
  color: var(--by-text);
  font-size: 15px;
  line-height: 1.6;
  word-break: break-word;
}

.page-privacy .pv-contact__val a {
  color: var(--by-lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(199, 255, 61, 0.4);
}

.page-privacy .pv-contact__val a:hover,
.page-privacy .pv-contact__val a:focus-visible {
  border-bottom-color: var(--by-lime);
  outline: none;
}

.page-privacy .pv-contact__val a:focus-visible {
  box-shadow: 0 0 0 2px var(--by-focus);
}

/* ---------- 版本行 ---------- */
.page-privacy .pv-version {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--by-line);
  font-size: 13px;
}

.page-privacy .pv-version__key {
  font-family: var(--by-font-mono);
  letter-spacing: 0.14em;
  color: var(--by-dim);
}

.page-privacy .pv-version__val {
  font-family: var(--by-font-mono);
  color: var(--by-ink);
  background: var(--by-lime);
  padding: 2px 8px;
  border-radius: var(--by-radius);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-privacy .pv-defs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-privacy .pv-contact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px 20px;
  }
}

@media (min-width: 900px) {
  .page-privacy .pv-cover__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }
}

@media (min-width: 960px) {
  .page-privacy .pv-layout {
    grid-template-columns: var(--pv-rail-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-privacy .pv-rail {
    position: sticky;
    top: calc(var(--by-header-h) + 20px);
  }
}

@media (max-width: 480px) {
  .page-privacy .pv-cover__meta .by-badge {
    font-size: 11.5px;
  }

  .page-privacy .pv-def,
  .page-privacy .pv-rights li,
  .page-privacy .pv-contact {
    padding-left: 13px;
    padding-right: 13px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-privacy .pv-rail__link {
    transition: none;
  }
}

@media print {
  .page-privacy .pv-cover {
    background-image: none;
    background-color: transparent;
    border-bottom: 1px solid #999;
  }

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

  .page-privacy .pv-contact {
    background: transparent;
    box-shadow: none;
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }

  .page-privacy .pv-layout {
    display: block;
  }
}
<<<END>>>