.page-privacy {
  --doc-rail: 244px;
  --doc-gap: clamp(28px, 4vw, 72px);
  --doc-hair: rgba(5, 7, 12, 0.12);
  --doc-hair-dark: rgba(166, 179, 196, 0.22);
  display: block;
  background: var(--white);
  color: var(--ink);
  font-family: var(--font-body);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-privacy .privacy-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--night);
  color: var(--white);
}

.page-privacy .privacy-hero__media {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.page-privacy .privacy-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.46;
}

.page-privacy .privacy-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(6, 20, 38, 0.66) 0%, rgba(6, 20, 38, 0.9) 58%, var(--night) 100%),
    linear-gradient(90deg, rgba(11, 31, 58, 0.9) 0%, rgba(11, 31, 58, 0.2) 70%);
}

.page-privacy .privacy-hero__inner {
  padding: clamp(44px, 7vw, 88px) var(--pad) clamp(40px, 6vw, 76px);
  max-width: 1120px;
}

.page-privacy .privacy-hero__kicker {
  margin: 28px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-privacy .privacy-hero h1 {
  margin: 16px 0 0;
  max-width: 22ch;
  font-family: var(--font-serif);
  font-size: clamp(30px, 5.4vw, 46px);
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: 0.01em;
  color: var(--white);
}

.page-privacy .privacy-hero__lead {
  margin: 20px 0 0;
  max-width: 60ch;
  font-size: 16.5px;
  line-height: 1.85;
  color: rgba(244, 247, 250, 0.84);
}

.page-privacy .privacy-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-privacy .privacy-hero__facts li {
  font-family: var(--font-narrow);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.05em;
  line-height: 1.4;
  padding: 9px 16px;
  color: var(--cyan);
  border: 1px solid var(--cyan-line);
  border-radius: 4px 16px 16px 4px;
  background: rgba(44, 229, 210, 0.06);
}

/* ---------- 双栏骨架 ---------- */
.page-privacy .privacy-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--doc-gap);
  max-width: 1280px;
  margin: 0 auto;
  padding: clamp(30px, 5vw, 68px) var(--pad) clamp(56px, 8vw, 112px);
}

/* ---------- 章节索引轨道 ---------- */
.page-privacy .privacy-rail {
  min-width: 0;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--doc-hair);
}

.page-privacy .privacy-rail__title {
  margin: 0 0 14px;
  font-family: var(--font-narrow);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--deep);
}

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

.page-privacy .privacy-rail__link {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  padding: 9px 10px 9px 12px;
  border-left: 2px solid transparent;
  text-decoration: none;
  color: var(--ink);
  font-size: 14.5px;
  line-height: 1.6;
  transition: color var(--t-color) var(--ease), border-color var(--t-color) var(--ease),
    padding-left var(--t-move) var(--ease), background-color var(--t-color) var(--ease);
}

.page-privacy .privacy-rail__num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--orange);
}

.page-privacy .privacy-rail__label {
  min-width: 0;
}

.page-privacy .privacy-rail__link:hover,
.page-privacy .privacy-rail__link:focus-visible {
  color: var(--deep);
  border-left-color: var(--cyan);
  background: var(--mint);
  padding-left: 18px;
}

.page-privacy .privacy-rail__link:focus-visible,
.page-privacy .privacy-doc a:focus-visible,
.page-privacy .contact-strip__btn:focus-visible,
.page-privacy .doc-sec__summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 正文区 ---------- */
.page-privacy .privacy-doc {
  min-width: 0;
  max-width: 880px;
}

.page-privacy .doc-sec {
  scroll-margin-top: 96px;
}

.page-privacy .doc-sec + .doc-sec {
  margin-top: clamp(20px, 3vw, 34px);
  border-top: 1px solid var(--doc-hair);
}

.page-privacy .doc-fold {
  border-left: 3px solid transparent;
  transition: border-color var(--t-color) var(--ease);
}

.page-privacy .doc-fold[open] {
  border-left-color: var(--cyan);
}

.page-privacy .doc-sec__summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: clamp(18px, 2.6vw, 26px) 0 12px clamp(12px, 2vw, 22px);
  cursor: pointer;
  list-style: none;
}

.page-privacy .doc-sec__summary::-webkit-details-marker {
  display: none;
}

.page-privacy .doc-sec__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--deep);
}

.page-privacy .doc-sec__title {
  flex: 1 1 auto;
  min-width: 0;
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(20px, 2.7vw, 27px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

.page-privacy .doc-sec__mark {
  flex: none;
  align-self: center;
  position: relative;
  width: 16px;
  height: 16px;
}

.page-privacy .doc-sec__mark::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 7px;
  height: 7px;
  border-right: 1.6px solid var(--orange);
  border-bottom: 1.6px solid var(--orange);
  transform: translate(-58%, -50%) rotate(-45deg);
  transition: transform var(--t-move) var(--ease), border-color var(--t-color) var(--ease);
}

.page-privacy .doc-fold[open] > .doc-sec__summary .doc-sec__mark::before {
  transform: translate(-50%, -62%) rotate(45deg);
  border-color: var(--cyan);
}

.page-privacy .doc-sec__body {
  padding: 0 0 clamp(22px, 3.4vw, 38px) clamp(12px, 2vw, 22px);
}

.page-privacy .doc-sec__body p {
  margin: 0 0 1em;
  max-width: 70ch;
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--ink);
}

.page-privacy .doc-sec__body p:last-child {
  margin-bottom: 0;
}

.page-privacy .doc-note {
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--doc-hair);
  font-size: 15px;
  line-height: 1.8;
  color: rgba(5, 7, 12, 0.72);
}

.page-privacy .link {
  color: var(--deep);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan);
  transition: padding-left var(--t-move) var(--ease), color var(--t-color) var(--ease);
}

.page-privacy .link:hover {
  padding-left: 2px;
  color: var(--orange);
}

/* ---------- 三类信息卡 ---------- */
.page-privacy .fact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin: 22px 0 0;
}

.page-privacy .fact {
  padding: 20px 20px 22px;
  background: var(--mint);
  border-top: 3px solid var(--orange);
  border-radius: var(--radius-card);
  transition: border-color var(--t-color) var(--ease), transform var(--t-move) var(--ease);
}

.page-privacy .fact:hover {
  border-top-color: var(--cyan);
  transform: translateY(-2px);
}

.page-privacy .fact__k {
  margin: 0 0 10px;
  font-family: var(--font-narrow);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--deep);
}

.page-privacy .fact__v {
  margin: 0 !important;
  font-size: 15px !important;
  line-height: 1.78 !important;
  color: var(--ink);
}

/* ---------- 四条用途 ---------- */
.page-privacy .use-list {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-privacy .use-list li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--doc-hair);
}

.page-privacy .use-list li:first-child {
  border-top: 1px solid var(--doc-hair);
}

.page-privacy .use-list__num {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 800;
  line-height: 1.7;
  color: var(--deep);
}

.page-privacy .use-list__t {
  margin: 0 0 6px !important;
  font-family: var(--font-narrow);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--deep);
}

.page-privacy .use-list__d {
  margin: 0 !important;
  font-size: 15.5px !important;
  line-height: 1.78 !important;
  color: var(--ink);
}

/* ---------- 键值型说明（本地偏好 / 合作方 / 权利） ---------- */
.page-privacy .pref-list {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--doc-hair);
}

.page-privacy .pref {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding: 17px 16px;
  border-bottom: 1px solid var(--doc-hair);
  transition: background-color var(--t-color) var(--ease);
}

.page-privacy .pref:nth-child(odd) {
  background: rgba(214, 245, 241, 0.42);
}

.page-privacy .pref:hover {
  background: var(--mint);
}

.page-privacy .pref__key {
  font-family: var(--font-narrow);
  font-size: 15.5px;
  font-weight: 700;
  letter-spacing: 0.05em;
  line-height: 1.5;
  color: var(--deep);
}

.page-privacy .pref__val {
  min-width: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--ink);
}

.page-privacy .path {
  display: block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--deep);
}

/* ---------- 关键承诺块 ---------- */
.page-privacy .pledge {
  margin: 26px 0 0;
  padding: clamp(24px, 3.6vw, 36px);
  background: var(--deep);
  border-radius: var(--radius-panel);
  border-left: 5px solid var(--cyan);
}

.page-privacy .pledge__line {
  margin: 0 !important;
  max-width: 46ch;
  font-family: var(--font-serif);
  font-size: clamp(18px, 2.3vw, 23px);
  line-height: 1.62;
  color: var(--white);
}

.page-privacy .pledge__note {
  margin: 14px 0 0 !important;
  max-width: 60ch;
  font-size: 14.5px !important;
  line-height: 1.78 !important;
  color: var(--mist);
}

/* ---------- 联系方式条 ---------- */
.page-privacy .contact-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin: 24px 0 0;
  padding: 20px 22px;
  background: var(--violet);
  border-radius: var(--radius-card);
}

.page-privacy .contact-strip__main {
  flex: 1 1 240px;
  min-width: 0;
}

.page-privacy .contact-strip__label {
  margin: 0 !important;
  font-family: var(--font-narrow);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-privacy .contact-strip__value {
  margin: 8px 0 0 !important;
  font-family: var(--font-mono);
  font-size: clamp(14px, 2.1vw, 18px);
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--signal);
  overflow-wrap: anywhere;
}

.page-privacy .contact-strip__btn {
  flex: none;
}

/* ---------- 场景加强 ---------- */
@media (min-width: 720px) {
  .page-privacy .fact-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-privacy .pref {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 24px;
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-privacy .privacy-layout {
    grid-template-columns: var(--doc-rail) minmax(0, 1fr);
    gap: clamp(40px, 5vw, 84px);
  }

  .page-privacy .privacy-rail {
    position: sticky;
    top: 48px;
    align-self: start;
    max-height: calc(100vh - 96px);
    overflow: auto;
    padding-bottom: 0;
    border-bottom: 0;
    border-right: 1px solid var(--doc-hair-dark);
    padding-right: 18px;
  }

  .page-privacy .privacy-rail__title {
    margin-bottom: 18px;
  }
}

@media (min-width: 1280px) {
  .page-privacy .privacy-doc {
    max-width: 900px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-privacy .fact,
  .page-privacy .privacy-rail__link,
  .page-privacy .doc-sec__mark::before {
    transition-duration: 1ms;
  }

  .page-privacy .fact:hover {
    transform: none;
  }
}