.page-privacy {
  --privacy-rule: rgba(143, 163, 200, 0.16);
  --privacy-cyan-line: rgba(43, 231, 214, 0.3);
  position: relative;
  overflow-x: clip;
  padding-bottom: clamp(60px, 8vw, 120px);
  background:
    radial-gradient(1100px 560px at 84% -8%, rgba(43, 231, 214, 0.09), transparent 64%),
    radial-gradient(720px 420px at 2% 28%, rgba(28, 44, 87, 0.5), transparent 68%);
}

.page-privacy::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(143, 163, 200, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(143, 163, 200, 0.05) 1px, transparent 1px);
  background-size: 88px 88px;
  -webkit-mask-image: radial-gradient(1100px 620px at 76% 8%, #000 0%, transparent 74%);
  mask-image: radial-gradient(1100px 620px at 76% 8%, #000 0%, transparent 74%);
}

.page-privacy > .shell {
  position: relative;
  z-index: 1;
  padding-top: clamp(26px, 4.5vw, 52px);
}

/* ---------- 页首 ---------- */
.page-privacy .privacy-hero {
  max-width: 72ch;
}

.page-privacy .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0 0 clamp(18px, 2.8vw, 30px);
  padding: 0;
  list-style: none;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-privacy .breadcrumbs li + li::before {
  content: "/";
  margin-right: 6px;
  color: rgba(143, 163, 200, 0.45);
}

.page-privacy .breadcrumbs a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-privacy .breadcrumbs a:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-privacy .breadcrumbs li[aria-current="page"] {
  color: var(--paper);
}

.page-privacy .privacy-hero .eyebrow {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-privacy .privacy-hero__title {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-size: clamp(36px, 7vw, 72px);
  font-weight: 900;
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-privacy .privacy-hero__lede {
  margin: 0 0 clamp(22px, 3vw, 32px);
  max-width: 62ch;
  font-size: clamp(16px, 1.55vw, 18.5px);
  line-height: 1.9;
  color: rgba(244, 248, 255, 0.78);
}

.page-privacy .privacy-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-privacy .privacy-hero__facts li {
  position: relative;
  padding-left: 17px;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-privacy .privacy-hero__facts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 7px;
  height: 7px;
  background: var(--cyan);
  transform: rotate(45deg);
}

/* ---------- 章节题图 ---------- */
.page-privacy .privacy-art {
  position: relative;
  margin: clamp(28px, 4.6vw, 52px) 0 0;
  overflow: hidden;
  background: linear-gradient(120deg, var(--layer), var(--deep));
  border-bottom: 1px solid var(--privacy-cyan-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
}

.page-privacy .privacy-art img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: clamp(140px, 22vw, 248px);
  object-fit: cover;
  opacity: 0.85;
}

/* ---------- 双列长卷骨架 ---------- */
.page-privacy .privacy-layout {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  margin-top: clamp(36px, 5.4vw, 72px);
}

.page-privacy .size-pick {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.page-privacy .reading-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  grid-column: 1 / -1;
}

.page-privacy .reading-bar__label {
  margin-right: 4px;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-privacy .size-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  padding: 6px 12px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mist);
  border: 1px solid rgba(143, 163, 200, 0.28);
  cursor: pointer;
  user-select: none;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 7px), calc(100% - 7px) 100%, 0 100%);
  transition: color 0.25s var(--ease), background-color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-privacy .size-chip:hover {
  color: var(--paper);
  border-color: var(--privacy-cyan-line);
}

.page-privacy #privacy-size-s:checked ~ .reading-bar label[for="privacy-size-s"],
.page-privacy #privacy-size-m:checked ~ .reading-bar label[for="privacy-size-m"],
.page-privacy #privacy-size-l:checked ~ .reading-bar label[for="privacy-size-l"] {
  color: var(--deep);
  background-color: var(--cyan);
  border-color: var(--cyan);
}

.page-privacy #privacy-size-s:focus-visible ~ .reading-bar label[for="privacy-size-s"],
.page-privacy #privacy-size-m:focus-visible ~ .reading-bar label[for="privacy-size-m"],
.page-privacy #privacy-size-l:focus-visible ~ .reading-bar label[for="privacy-size-l"] {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 条款目录 ---------- */
.page-privacy .privacy-aside {
  align-self: start;
  padding-top: 18px;
  border-top: 1px solid var(--privacy-cyan-line);
}

.page-privacy .privacy-aside__label {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-privacy .toc ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-privacy .toc li {
  border-top: 1px solid var(--privacy-rule);
}

.page-privacy .toc li:first-child {
  border-top: 0;
}

.page-privacy .toc a {
  display: flex;
  gap: 12px;
  padding: 11px 0;
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--mist);
  text-decoration: none;
  transition: color 0.25s var(--ease);
}

.page-privacy .toc a:hover,
.page-privacy .toc a.is-active {
  color: var(--cyan);
}

.page-privacy .toc a.is-active .toc__no {
  color: var(--gold);
}

.page-privacy .toc__no {
  flex: 0 0 auto;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: rgba(43, 231, 214, 0.6);
  transition: color 0.25s var(--ease);
}

/* ---------- 正文长卷 ---------- */
.page-privacy .privacy-body {
  max-width: 74ch;
  font-size: 16px;
  line-height: 1.9;
  color: rgba(244, 248, 255, 0.82);
}

.page-privacy #privacy-size-s:checked ~ .privacy-body {
  font-size: 15.5px;
  line-height: 1.85;
}

.page-privacy #privacy-size-m:checked ~ .privacy-body {
  font-size: 17px;
  line-height: 1.9;
}

.page-privacy #privacy-size-l:checked ~ .privacy-body {
  font-size: 19px;
  line-height: 1.95;
}

.page-privacy .privacy-body p {
  margin: 0 0 1em;
}

.page-privacy .privacy-body a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 231, 214, 0.34);
  transition: border-color 0.25s var(--ease);
}

.page-privacy .privacy-body a:hover {
  border-bottom-color: var(--cyan);
}

.page-privacy .clause {
  padding-top: clamp(26px, 4vw, 44px);
  border-top: 1px solid var(--privacy-rule);
  scroll-margin-top: 112px;
}

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

.page-privacy .clause + .clause {
  margin-top: clamp(32px, 5vw, 62px);
}

.page-privacy .clause__title {
  display: flex;
  align-items: baseline;
  gap: 13px;
  margin: 0 0 0.72em;
  font-family: var(--font-display);
  font-size: 1.5em;
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-privacy .clause__no {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 0.58em;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-privacy .clause__items {
  display: grid;
  gap: 0.95em;
  margin: 0 0 1em;
  padding: 0;
  list-style: none;
}

.page-privacy .clause__items li {
  position: relative;
  padding-left: 21px;
}

.page-privacy .clause__items li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.82em;
  width: 9px;
  height: 1px;
  background: var(--cyan);
  opacity: 0.65;
}

.page-privacy .clause__items strong {
  color: var(--paper);
  font-weight: 700;
}

.page-privacy .contact-block {
  margin: 0.4em 0 1em;
  padding: 18px 20px;
  border-left: 2px solid var(--cyan);
  background: linear-gradient(90deg, rgba(43, 231, 214, 0.08), rgba(43, 231, 214, 0) 78%);
  font-size: 0.96em;
}

.page-privacy .contact-block__line {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
  margin: 0 0 8px;
}

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

.page-privacy .contact-block__k {
  flex: 0 0 auto;
  min-width: 42px;
  font-size: 0.7em;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
}

/* ---------- 返回顶部 ---------- */
.page-privacy .to-top {
  position: fixed;
  right: clamp(14px, 3.2vw, 38px);
  bottom: clamp(14px, 3.2vw, 38px);
  z-index: 40;
  padding: 10px 16px;
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--paper);
  background: rgba(16, 28, 62, 0.94);
  border: 1px solid var(--privacy-cyan-line);
  cursor: pointer;
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-privacy .to-top.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.page-privacy .to-top:hover {
  color: var(--cyan);
  border-color: var(--cyan);
  box-shadow: var(--shadow-cyan);
}

/* ---------- 桌面端：目录常驻 ---------- */
@media (min-width: 980px) {
  .page-privacy .privacy-layout {
    grid-template-columns: clamp(212px, 18vw, 258px) minmax(0, 1fr);
    column-gap: clamp(44px, 5vw, 96px);
    row-gap: clamp(28px, 3vw, 42px);
    align-items: start;
  }

  .page-privacy .reading-bar {
    justify-content: flex-end;
  }

  .page-privacy .privacy-aside {
    position: sticky;
    top: 104px;
    max-height: calc(100vh - 148px);
    overflow-y: auto;
    padding-top: 0;
    border-top: 0;
  }

  .page-privacy .privacy-aside__label {
    padding-bottom: 12px;
    border-bottom: 1px solid var(--privacy-cyan-line);
  }

  .page-privacy .privacy-body {
    grid-column: 2;
  }

  .page-privacy .privacy-art img {
    height: clamp(180px, 20vw, 268px);
  }
}

/* ---------- 窄屏收紧 ---------- */
@media (max-width: 640px) {
  .page-privacy {
    --cut: 14px;
  }

  .page-privacy .privacy-hero__title {
    font-size: 34px;
  }

  .page-privacy .privacy-art img {
    height: 142px;
  }

  .page-privacy .privacy-aside {
    padding-top: 14px;
  }

  .page-privacy .toc a {
    padding: 10px 0;
    font-size: 13px;
  }

  .page-privacy .contact-block {
    padding: 14px 16px;
  }

  .page-privacy .clause {
    scroll-margin-top: 84px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-privacy .size-chip,
  .page-privacy .toc a,
  .page-privacy .to-top,
  .page-privacy .breadcrumbs a,
  .page-privacy .privacy-body a {
    transition: none;
  }

  .page-privacy .to-top {
    transform: none;
  }
}