/* ============================================================
   隐私政策页样式
   依赖 css/index.css 中的变量与基础组件
   ============================================================ */

/* ---------- 导航当前页标记 ---------- */
.nav-links a.is-current{
  color:var(--text);
  background:rgba(255,255,255,.08);
  position:relative;
}
.nav-links a.is-current::after{
  content:"";position:absolute;left:50%;bottom:3px;
  width:14px;height:2px;margin-left:-7px;border-radius:2px;
  background:var(--grad);
}

/* ---------- Hero 微调 ---------- */
.pv-hero{padding-bottom:74px}
.pv-hero .sub{margin-bottom:52px}

/* ---------- 零数据徽章 ---------- */
.zero-badge{
  display:flex;flex-direction:column;align-items:center;
  gap:14px;margin:0 auto 40px;
}
.zb-ring{
  position:relative;
  width:120px;height:120px;
}
.zb-ring svg{
  position:absolute;inset:0;
  width:100%;height:100%;
  animation:ringSpin 26s linear infinite;
  transform-origin:center;
}
@keyframes ringSpin{
  from{transform:rotate(0deg)}
  to{transform:rotate(360deg)}
}
.zb-num{
  position:absolute;inset:0;
  display:flex;align-items:center;justify-content:center;
  font-size:52px;font-weight:760;
  letter-spacing:-.05em;line-height:1;
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;
  font-variant-numeric:tabular-nums;
}
.zb-label{
  font-size:12.5px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--muted);font-weight:600;
}

/* ---------- 数据流向对比 ---------- */
.flow-compare{
  display:flex;flex-direction:column;gap:16px;
}
.fc-row{
  padding:32px 34px;border-radius:20px;
  border:1px solid var(--line);
  background:var(--card);
  transition:border-color .34s,background .34s,transform .34s cubic-bezier(.22,1,.36,1);
}
.fc-row:hover{transform:translateY(-3px)}
.fc-row.fc-bad:hover{
  border-color:rgba(255,107,138,.28);
  background:rgba(255,107,138,.035);
}
.fc-row.fc-good{
  border-color:rgba(46,230,255,.24);
  background:linear-gradient(150deg,rgba(46,230,255,.055),rgba(165,107,255,.03) 60%,transparent);
}
.fc-row.fc-good:hover{
  border-color:rgba(46,230,255,.42);
  transform:translateY(-3px);
}

.fc-label{
  display:flex;align-items:center;gap:14px;
  flex-wrap:wrap;
  margin-bottom:24px;
}
.fc-tag{
  font-size:11.5px;font-weight:650;
  letter-spacing:.12em;text-transform:uppercase;
  padding:5px 13px;border-radius:999px;
}
.fc-tag.bad{
  color:#ff8fa5;background:rgba(255,107,138,.09);
  border:1px solid rgba(255,107,138,.24);
}
.fc-tag.good{
  color:var(--c1);background:rgba(46,230,255,.09);
  border:1px solid rgba(46,230,255,.26);
}
.fc-desc{font-size:13.5px;color:var(--muted)}

.fc-track{
  display:flex;align-items:center;gap:14px;
  flex-wrap:wrap;
}
.fc-node{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:580;
  letter-spacing:-.01em;
  padding:11px 20px;border-radius:12px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.035);
  white-space:nowrap;
}
.fc-node.highlight{
  border-color:rgba(46,230,255,.34);
  background:rgba(46,230,255,.08);
  color:#e9f4ff;
  font-weight:640;
}
.fc-node.warn{
  border-color:rgba(255,107,138,.3);
  background:rgba(255,107,138,.06);
  color:#ffb3c1;
}
.fc-warn-dot{
  width:6px;height:6px;border-radius:50%;
  background:#ff6b8a;box-shadow:0 0 8px #ff6b8a;
  flex-shrink:0;
}

.fc-line{
  flex:1;min-width:40px;height:1px;
  background:repeating-linear-gradient(
    to right,
    rgba(255,255,255,.18) 0 6px,
    transparent 6px 12px
  );
}
.fc-line.direct{
  background:linear-gradient(to right,
    rgba(46,230,255,.55),rgba(165,107,255,.4));
  height:2px;
  border-radius:2px;
}
.fc-bypass{
  font-size:12px;color:#5fd6a8;
  padding:5px 12px;border-radius:999px;
  background:rgba(95,214,168,.08);
  border:1px solid rgba(95,214,168,.2);
  white-space:nowrap;
}

/* ---------- 不收集清单 ---------- */
.never-grid{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:16px;
}
.nv-item{
  padding:28px 26px;border-radius:18px;
  border:1px solid var(--line);background:var(--card);
  transition:border-color .34s,background .34s,transform .34s cubic-bezier(.22,1,.36,1);
}
.nv-item:hover{
  border-color:rgba(255,107,138,.22);
  background:rgba(255,107,138,.028);
  transform:translateY(-4px);
}
.nv-icon{
  width:42px;height:42px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,107,138,.08);
  border:1px solid rgba(255,107,138,.2);
  margin-bottom:18px;
}
.nv-icon svg{width:20px;height:20px;stroke:#ff8fa5}
.nv-title{
  font-size:16.5px;font-weight:660;
  letter-spacing:-.015em;margin-bottom:9px;
}
.nv-desc{
  font-size:13.5px;color:var(--muted);line-height:1.72;
}

/* ---------- 本地留存 ---------- */
.local-box{
  border:1px solid rgba(46,230,255,.22);border-radius:24px;
  overflow:hidden;
  background:
    radial-gradient(ellipse 70% 100% at 0% 0%,rgba(46,230,255,.07),transparent 60%),
    linear-gradient(160deg,rgba(255,255,255,.04),rgba(255,255,255,.008));
  padding:40px;
}
.lb-head{
  display:flex;align-items:center;gap:16px;
  padding-bottom:26px;margin-bottom:6px;
  border-bottom:1px solid var(--line);
}
.lb-device{
  display:flex;align-items:center;justify-content:center;
  width:48px;height:48px;border-radius:14px;flex-shrink:0;
  background:rgba(46,230,255,.1);
  border:1px solid rgba(46,230,255,.26);
}
.lb-device svg{width:22px;height:22px;stroke:var(--c1)}
.lb-title{
  font-size:17px;font-weight:680;
  letter-spacing:-.018em;margin-bottom:3px;
}
.lb-sub{font-size:12.5px;color:var(--muted-2);letter-spacing:.02em}

.lb-list{
  display:grid;grid-template-columns:repeat(2,1fr);
  gap:0 40px;
}
.lb-row{
  display:flex;align-items:flex-start;gap:14px;
  padding:20px 0;
  border-bottom:1px solid rgba(255,255,255,.05);
}
.lb-row:nth-last-child(-n+2){border-bottom:none}
.lb-check{
  flex-shrink:0;margin-top:5px;
  position:relative;
  width:16px;height:16px;border-radius:5px;
  background:rgba(46,230,255,.12);
  border:1px solid rgba(46,230,255,.3);
}
.lb-check::after{
  content:"";position:absolute;
  left:4.5px;top:1.5px;
  width:5px;height:9px;
  border-right:1.8px solid var(--c1);
  border-bottom:1.8px solid var(--c1);
  transform:rotate(42deg);
}
.lb-name{
  font-size:14.5px;font-weight:600;
  letter-spacing:-.012em;margin-bottom:4px;
}
.lb-note{font-size:12.5px;color:var(--muted-2);line-height:1.6}

.lb-foot{
  display:flex;align-items:center;gap:10px;
  margin-top:26px;padding-top:22px;
  border-top:1px solid var(--line);
  font-size:13.5px;color:var(--muted);
}
.lb-foot-icon{
  display:flex;align-items:center;justify-content:center;
  width:22px;height:22px;flex-shrink:0;
}
.lb-foot-icon svg{width:17px;height:17px;stroke:var(--c1)}

/* ---------- 生命周期 ---------- */
.lifecycle{
  display:grid;grid-template-columns:repeat(3,1fr);gap:16px;
}
.lc-item{
  padding:30px 28px;border-radius:18px;
  border:1px solid var(--line);background:var(--card);
  transition:border-color .34s,background .34s,transform .34s cubic-bezier(.22,1,.36,1);
  position:relative;overflow:hidden;
}
.lc-item::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:var(--grad);
  transform:scaleX(0);transform-origin:left;
  transition:transform .4s cubic-bezier(.22,1,.36,1);
}
.lc-item:hover{
  border-color:var(--line-hi);
  background:var(--card-hi);
  transform:translateY(-4px);
}
.lc-item:hover::before{transform:scaleX(1)}
.lc-stage{
  display:inline-block;
  font-size:11.5px;font-weight:650;
  letter-spacing:.14em;
  color:var(--c1);
  margin-bottom:14px;
  font-variant-numeric:tabular-nums;
}
.lc-item h3{
  font-size:16.5px;font-weight:660;
  letter-spacing:-.016em;margin-bottom:10px;
}
.lc-item p{font-size:13.5px;color:var(--muted);line-height:1.72}

/* ---------- 权限清单 ---------- */
.perm-list{
  border:1px solid var(--line);border-radius:18px;
  overflow:hidden;
  background:linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,.01));
}
.pm-row{
  display:grid;
  grid-template-columns:1.1fr 2.2fr .7fr;
  gap:24px;align-items:center;
  padding:22px 28px;
  border-bottom:1px solid var(--line);
  transition:background .3s;
}
.pm-row:last-child{border-bottom:none}
.pm-row:hover{background:rgba(255,255,255,.028)}
.pm-name{
  font-size:15px;font-weight:640;
  letter-spacing:-.012em;
}
.pm-reason{font-size:13.5px;color:var(--muted);line-height:1.68}
.pm-need{
  justify-self:end;
  font-size:12px;font-weight:650;
  letter-spacing:.06em;
  padding:5px 13px;border-radius:999px;
  white-space:nowrap;
}
.pm-need:not(.off){
  color:var(--c1);
  background:rgba(46,230,255,.09);
  border:1px solid rgba(46,230,255,.24);
}
.pm-need.off{
  color:#5fd6a8;
  background:rgba(95,214,168,.08);
  border:1px solid rgba(95,214,168,.22);
}

/* ---------- FAQ 折叠 ---------- */
.faq{display:flex;flex-direction:column;gap:12px}
.faq details{
  border:1px solid var(--line);border-radius:16px;
  background:var(--card);overflow:hidden;
  transition:border-color .3s,background .3s;
}
.faq details[open]{
  border-color:rgba(46,230,255,.28);
  background:var(--card-hi);
}
.faq summary{
  list-style:none;cursor:pointer;position:relative;
  padding:20px 56px 20px 24px;
  font-size:15.5px;font-weight:600;
  letter-spacing:-.012em;
  transition:color .24s;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--c1)}
.faq summary::after{
  content:"";position:absolute;right:26px;top:50%;
  width:9px;height:9px;margin-top:-6px;
  border-right:1.8px solid var(--muted);
  border-bottom:1.8px solid var(--muted);
  transform:rotate(45deg);
  transition:transform .3s cubic-bezier(.22,1,.36,1),border-color .3s;
}
.faq details[open] summary::after{
  transform:rotate(-135deg);
  margin-top:-2px;
  border-color:var(--c1);
}
.faq .ans{
  padding:0 24px 22px;
  font-size:14.5px;color:var(--muted);line-height:1.78;
  max-width:820px;
}

/* ---------- 响应式 ---------- */
@media(max-width:1000px){
  .never-grid{grid-template-columns:repeat(2,1fr)}
  .lifecycle{grid-template-columns:repeat(2,1fr)}
}

@media(max-width:960px){
  .lb-list{grid-template-columns:1fr;gap:0}
  .lb-row:nth-last-child(-n+2){border-bottom:1px solid rgba(255,255,255,.05)}
  .lb-row:last-child{border-bottom:none}
  .pm-row{grid-template-columns:1fr auto;gap:10px 16px}
  .pm-reason{grid-column:1/-1}
}

@media(max-width:680px){
  .pv-hero{padding-bottom:52px}
  .pv-hero .sub{margin-bottom:36px}
  .zero-badge{margin-bottom:30px}
  .zb-ring{width:96px;height:96px}
  .zb-num{font-size:42px}

  .fc-row{padding:24px 20px}
  .fc-track{gap:10px}
  .fc-node{font-size:13px;padding:9px 15px}
  .fc-line{min-width:24px}
  .fc-bypass{font-size:11.5px}

  .never-grid{grid-template-columns:1fr}
  .nv-item{padding:24px 22px}

  .local-box{padding:28px 22px}
  .lb-row{padding:16px 0}

  .lifecycle{grid-template-columns:1fr}
  .lc-item{padding:26px 22px}

  .pm-row{padding:18px 20px}
  .pm-name{font-size:14.5px}

  .faq summary{padding:18px 50px 18px 20px;font-size:15px}
  .faq .ans{padding:0 20px 20px}
}

@media(prefers-reduced-motion:reduce){
  .zb-ring svg{animation:none}
}