/* Apple HIG–inspired light UI (mobile) */
:root{
  --bg:#f2f2f7;
  --elevated:#ffffff;
  --ink:#1c1c1e;
  --secondary:rgba(60,60,67,.72);
  --tertiary:rgba(60,60,67,.48);
  --separator:rgba(60,60,67,.12);
  --fill:rgba(120,120,128,.12);
  --fill-strong:rgba(120,120,128,.2);
  --tint:#007aff;
  --radius:12px;
  --radius-lg:14px;
  --safe-t:env(safe-area-inset-top,0px);
  --safe-b:env(safe-area-inset-bottom,0px);
  --safe-l:env(safe-area-inset-left,0px);
  --safe-r:env(safe-area-inset-right,0px);
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Text","PingFang SC","Hiragino Sans GB","Helvetica Neue",sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);background:var(--bg);color:var(--ink);
  font-size:17px;line-height:1.4;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
a,button,summary{-webkit-tap-highlight-color:transparent}

.m-shell{min-height:100dvh;padding-bottom:calc(28px + var(--safe-b));overflow-x:hidden}

.m-top{
  position:sticky;top:0;z-index:50;
  backdrop-filter:saturate(180%) blur(20px);
  -webkit-backdrop-filter:saturate(180%) blur(20px);
  background:rgba(242,242,247,.78);
  border-bottom:0.5px solid var(--separator);
  padding:calc(4px + var(--safe-t)) max(16px,var(--safe-r)) 8px max(16px,var(--safe-l));
}
.m-brand{display:flex;align-items:center;justify-content:space-between;min-height:28px;margin-bottom:6px}
.m-brand strong{font-size:13px;font-weight:600;color:var(--secondary);letter-spacing:-.01em}
.m-brand a{font-size:17px;color:var(--tint);font-weight:400;min-height:32px;display:inline-flex;align-items:center}
.m-controls{display:grid;grid-template-columns:1fr auto;gap:8px}
.m-controls select,.m-controls button{
  font:inherit;font-size:16px;min-height:36px;border-radius:10px;border:0;
  background:var(--fill);color:var(--ink);padding:0 12px;
}
.m-controls select{background:var(--elevated);border:0.5px solid var(--separator)}
.m-controls button{background:var(--tint);color:#fff;font-weight:600;padding:0 14px}

.m-hero{padding:4px 16px 0}
.m-hero h1{margin:0;font-size:34px;line-height:1.12;font-weight:700;letter-spacing:-.02em}
.m-hero p{margin:4px 0 0;color:var(--secondary);font-size:15px;line-height:1.35}

.m-stats{
  display:flex;gap:8px;overflow-x:auto;-webkit-overflow-scrolling:touch;
  padding:12px 16px 0;scrollbar-width:none;
  mask-image:linear-gradient(90deg,#000 90%,transparent);
  -webkit-mask-image:linear-gradient(90deg,#000 90%,transparent);
}
.m-stats::-webkit-scrollbar{display:none}
.m-stat{
  flex:0 0 auto;background:var(--elevated);color:var(--secondary);
  border:0.5px solid var(--separator);border-radius:980px;
  padding:5px 11px;font-size:12px;font-weight:500;
}

.m-tools{display:flex;gap:8px;padding:10px 16px 0}
.m-tools button{
  flex:1;min-height:36px;border-radius:980px;border:0;
  background:var(--fill);color:var(--tint);font:inherit;font-size:15px;font-weight:600;
}

.m-toc-wrap{
  position:sticky;top:var(--sticky-offset,88px);z-index:40;
  background:rgba(242,242,247,.9);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:0.5px solid var(--separator);
  padding:8px 0;
}
.m-toc-fade{
  mask-image:linear-gradient(90deg,#000 92%,transparent);
  -webkit-mask-image:linear-gradient(90deg,#000 92%,transparent);
}
.m-toc{
  display:flex;gap:8px;overflow-x:auto;-webkit-overflow-scrolling:touch;
  padding:0 16px;scrollbar-width:none;
}
.m-toc::-webkit-scrollbar{display:none}
.m-toc a{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:5px;
  min-height:32px;padding:0 12px;border-radius:980px;border:0;
  background:var(--fill);font-size:13px;font-weight:500;white-space:nowrap;color:var(--ink);
}
.toc-ico{width:14px;height:14px;border-radius:3px}
.toc-n{color:var(--secondary);font-variant-numeric:tabular-nums}

.m-list{padding:12px 16px 0;display:flex;flex-direction:column;gap:12px}
.m-plat{
  background:var(--elevated);border-radius:var(--radius-lg);overflow:hidden;
  border:0.5px solid var(--separator);box-shadow:none;
}
.m-plat summary{
  list-style:none;display:flex;align-items:center;justify-content:space-between;
  gap:10px;padding:12px 14px;min-height:52px;cursor:pointer;user-select:none;
}
.m-plat summary::-webkit-details-marker{display:none}
.m-plat summary:active{background:var(--fill)}
.m-plat-head{display:flex;align-items:center;gap:10px;min-width:0;flex:1}
.plat-ico{width:26px;height:26px;border-radius:6px;flex-shrink:0;background:var(--fill);object-fit:contain}
.m-plat h2{margin:0;font-size:17px;font-weight:600;letter-spacing:-.01em;min-width:0}
.m-meta{display:flex;align-items:center;gap:4px;color:var(--secondary);font-size:13px}
.m-badge{background:var(--fill);border-radius:980px;padding:2px 7px;font-weight:500;color:var(--secondary);font-size:12px}
.m-chev{color:var(--tertiary);font-size:18px;transition:transform .2s ease}
.m-plat[open] .m-chev{transform:rotate(90deg)}
.m-body{border-top:0.5px solid var(--separator);padding:0}
.m-note{color:var(--tertiary);font-size:12px;padding:8px 14px 0}

.m-body ol{list-style:none;margin:0;padding:0;counter-reset:rank}
.m-body li{
  counter-increment:rank;
  display:grid !important;
  grid-template-columns:26px 72px minmax(0,1fr) !important;
  column-gap:10px;
  padding:10px 14px;
  border-bottom:0.5px solid var(--separator);
  align-items:center;
  min-height:68px;
}
.m-body li:last-child{border-bottom:0}
.m-body li:active{background:var(--fill)}
.m-body li::before{
  content:counter(rank);
  grid-column:1;grid-row:1;
  width:22px;height:22px;border-radius:980px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:600;background:var(--fill);color:var(--secondary);
  font-variant-numeric:tabular-nums;
}
.m-body li:nth-child(1)::before{background:#1c1c1e;color:#fff}
.m-body li:nth-child(2)::before{background:#3a3a3c;color:#fff}
.m-body li:nth-child(3)::before{background:#636366;color:#fff}
.m-body li > .thumb-slot{
  grid-column:2;grid-row:1;
  width:72px;height:54px;border-radius:8px;overflow:hidden;
  display:flex;align-items:center;justify-content:center;
  background:var(--fill);flex-shrink:0;
}
.m-body li > .thumb-slot.is-ph{
  background:linear-gradient(180deg, rgba(120,120,128,.10), rgba(120,120,128,.16));
}
.m-body li > .thumb-slot .m-thumb, .m-body li > .m-thumb{
  width:100%;height:100%;object-fit:cover;display:block;
}
.m-body li > .thumb-slot .thumb-ph{
  width:24px;height:24px;object-fit:contain;opacity:.92;border-radius:5px;
}
.m-body li > .m-main{
  grid-column:3;grid-row:1;min-width:0;
  display:flex;flex-direction:column;gap:2px;justify-content:center;
}
.m-body li > .m-main > .m-title{
  font-size:16px;font-weight:500;line-height:1.3;color:var(--ink);
  letter-spacing:-.01em;overflow-wrap:anywhere;word-break:break-word;
}
.m-body li > .m-main > .m-extra{
  margin:0;padding:0;border:0;background:transparent;
  color:var(--secondary);font-size:13px;font-weight:400;
  font-variant-numeric:tabular-nums;white-space:nowrap;
  max-width:100%;overflow:hidden;text-overflow:ellipsis;
}
.m-body li > .m-main > .m-extra-empty{display:none}

.m-foot{margin:20px 16px 0;color:var(--tertiary);font-size:12px;line-height:1.45;text-align:center}
.m-foot a{color:var(--secondary);font-weight:500}
.m-switch{
  display:block;text-align:center;margin:12px 16px 0;
  min-height:44px;line-height:44px;border-radius:12px;border:0;
  background:var(--elevated);color:var(--tint);font-weight:600;font-size:17px;
  border:0.5px solid var(--separator);
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .m-chev{transition:none}
}