.page-privacy {
  --pw-rail-w: 210px;
  --pw-textw: 66ch;
  --pw-paper-line: rgba(31, 28, 26, 0.14);
  --pw-ink-line: rgba(242, 236, 227, 0.14);
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-sans);
  padding-bottom: clamp(52px, 8vw, 104px);
}

.page-privacy .privacy-hero {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  margin-top: clamp(14px, 2vw, 26px);
  padding: clamp(34px, 8vw, 84px) clamp(22px, 5vw, 64px);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  background: linear-gradient(155deg, #1B1817 0%, #0F0D0C 52%, #1D130E 100%);
}

.page-privacy .privacy-hero__visual {
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0.34;
}

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

.page-privacy .privacy-hero__visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15, 13, 12, 0.42), rgba(15, 13, 12, 0.94) 82%);
}

.page-privacy .privacy-hero__inner {
  position: relative;
  max-width: 62ch;
}

.page-privacy .privacy-hero__title {
  margin: 12px 0 0;
  font-size: clamp(1.85rem, 6.4vw, 3.3rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.022em;
}

.page-privacy .privacy-hero__lead {
  margin: 18px 0 0;
  max-width: var(--pw-textw);
  font-size: 16.5px;
  line-height: 1.85;
  color: rgba(242, 236, 227, 0.8);
}

.page-privacy .privacy-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-privacy .privacy-layout {
  display: grid;
  gap: var(--gap);
  margin-top: var(--gap);
}

/* 章节轨道 */
.page-privacy .clause-rail__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--silver);
}

.page-privacy .clause-rail__list {
  display: flex;
  gap: 10px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-privacy .clause-rail__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  color: var(--silver);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  white-space: nowrap;
  text-decoration: none;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-privacy .clause-rail__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--flame);
}

.page-privacy .clause-rail__link:hover,
.page-privacy .clause-rail__link:focus-visible {
  color: var(--paper);
  border-color: var(--flame);
  background: rgba(255, 74, 23, 0.1);
}

.page-privacy .clause-rail__link[aria-current="true"] {
  color: var(--paper);
  border-color: var(--flame);
  background: rgba(255, 74, 23, 0.14);
}

/* 条款区块 */
.page-privacy .clause {
  padding: clamp(24px, 4.4vw, 48px);
  border-radius: var(--r-card);
  scroll-margin-top: 92px;
}

.page-privacy .clause--paper {
  background: var(--paper);
  color: var(--paper-ink);
}

.page-privacy .clause--ink {
  background: var(--slate);
  color: var(--paper);
  border: 1px solid var(--line);
}

.page-privacy .clause__head {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-privacy .clause__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.22em;
  color: var(--flame);
}

.page-privacy .clause--paper .clause__num {
  color: var(--flame-deep);
}

.page-privacy .clause__title {
  margin: 0;
  font-size: clamp(1.35rem, 3.6vw, 2rem);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.015em;
}

.page-privacy .clause__lead {
  margin: 0;
  max-width: var(--pw-textw);
  font-size: 16.5px;
  line-height: 1.85;
}

.page-privacy .clause__text {
  margin: 20px 0 0;
  max-width: var(--pw-textw);
  font-size: 16px;
  line-height: 1.85;
}

.page-privacy .clause--paper .clause__lead,
.page-privacy .clause--paper .clause__text,
.page-privacy .clause--paper .clause-list li {
  color: rgba(31, 28, 26, 0.8);
}

.page-privacy .clause--ink .clause__lead,
.page-privacy .clause--ink .clause__text,
.page-privacy .clause--ink .clause-list li {
  color: rgba(242, 236, 227, 0.82);
}

.page-privacy .clause-list {
  display: grid;
  gap: 12px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-privacy .clause-list li {
  position: relative;
  padding-left: 20px;
  max-width: var(--pw-textw);
  font-size: 16px;
  line-height: 1.85;
}

.page-privacy .clause-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 9px;
  height: 2px;
  border-radius: 2px;
  background: var(--flame);
}

.page-privacy .clause--paper .clause-list li::before {
  background: var(--flame-deep);
}

.page-privacy .clause-list__k {
  font-weight: 700;
}

.page-privacy .clause--ink .clause-list__k {
  color: var(--paper);
}

.page-privacy .clause-mail {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--mint);
  word-break: break-all;
}

.page-privacy .clause--paper .clause-mail,
.page-privacy .clause-mail--dark {
  color: var(--flame-deep);
}

/* 折叠条款 */
.page-privacy .clause-fold {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--pw-ink-line);
}

.page-privacy .clause--paper .clause-fold {
  border-top-color: var(--pw-paper-line);
}

.page-privacy .clause-fold summary {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
  list-style: none;
}

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

.page-privacy .clause-fold summary::after {
  content: "＋";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--flame);
  transition: transform 0.2s var(--ease);
}

.page-privacy .clause--paper .clause-fold summary::after {
  color: var(--flame-deep);
}

.page-privacy .clause-fold[open] summary::after {
  content: "－";
}

.page-privacy .clause-fold .fold__body {
  margin-top: 12px;
  max-width: var(--pw-textw);
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(242, 236, 227, 0.76);
}

.page-privacy .clause--paper .clause-fold .fold__body {
  color: rgba(31, 28, 26, 0.76);
}

.page-privacy .clause-fold .fold__body p {
  margin: 0;
}

/* 柔曲线分隔 */
.page-privacy .clause-curve {
  width: 62%;
  max-width: 520px;
  height: 26px;
  margin: calc(var(--gap) * 0.5) auto;
  border-top: 1px solid var(--line);
  border-radius: 50% 50% 0 0 / 100% 100% 0 0;
}

/* 页尾 */
.page-privacy .privacy-tail {
  display: grid;
  gap: var(--gap);
  margin-top: var(--gap);
}

.page-privacy .privacy-contact {
  padding: clamp(24px, 4.4vw, 44px);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  background: radial-gradient(120% 140% at 12% 0%, rgba(255, 74, 23, 0.16), rgba(27, 24, 23, 0) 62%), var(--slate);
}

.page-privacy .privacy-contact__title {
  margin: 0;
  font-size: clamp(1.3rem, 3.4vw, 1.8rem);
  font-weight: 800;
  letter-spacing: -0.015em;
}

.page-privacy .privacy-contact__text {
  margin: 16px 0 24px;
  max-width: var(--pw-textw);
  font-size: 16px;
  line-height: 1.85;
  color: rgba(242, 236, 227, 0.82);
}

.page-privacy .privacy-links {
  padding: clamp(24px, 4.4vw, 44px);
  border-radius: var(--r-card);
  background: var(--paper);
  color: var(--paper-ink);
}

.page-privacy .privacy-links__title {
  margin: 0 0 16px;
  font-size: clamp(1.15rem, 2.8vw, 1.5rem);
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-privacy .privacy-links__list {
  display: grid;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-privacy .privacy-links__link {
  display: block;
  padding: 12px 0;
  border-bottom: 1px solid var(--pw-paper-line);
  color: rgba(31, 28, 26, 0.82);
  font-size: 15.5px;
  line-height: 1.6;
  text-decoration: none;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), padding-left 0.18s var(--ease);
}

.page-privacy .privacy-links__link:hover,
.page-privacy .privacy-links__link:focus-visible {
  color: var(--flame-deep);
  border-bottom-color: var(--flame-deep);
  padding-left: 6px;
}

.page-privacy .clause-top {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 22px;
  padding: 9px 18px;
  border: 1px solid var(--pw-paper-line);
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: rgba(31, 28, 26, 0.78);
  text-decoration: none;
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
}

.page-privacy .clause-top:hover,
.page-privacy .clause-top:focus-visible {
  border-color: var(--flame-deep);
  color: var(--flame-deep);
}

@media (min-width: 900px) {
  .page-privacy .privacy-layout {
    grid-template-columns: var(--pw-rail-w) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
  }

  .page-privacy .clause-rail {
    position: sticky;
    top: 96px;
    align-self: start;
  }

  .page-privacy .clause-rail__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-privacy .clause-rail__link {
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0 12px 12px 0;
    padding: 11px 14px;
    white-space: normal;
  }

  .page-privacy .clause-rail__link:hover,
  .page-privacy .clause-rail__link:focus-visible {
    border-left-color: var(--flame);
    background: rgba(255, 74, 23, 0.08);
  }

  .page-privacy .clause-rail__link[aria-current="true"] {
    border-left-color: var(--flame);
    background: rgba(255, 74, 23, 0.1);
  }

  .page-privacy .privacy-tail {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: clamp(24px, 3vw, 40px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-privacy .clause-rail__link,
  .page-privacy .clause-fold summary::after,
  .page-privacy .privacy-links__link,
  .page-privacy .clause-top {
    transition: none;
  }
}
</main>