:root{
  --bg:#0e1116; --card:#171b22; --card2:#1f242d; --line:#2a313c;
  --fg:#e8ecf2; --dim:#98a2b3; --faint:#6b7480;
  --ok:#3ddc97; --warn:#ffc857; --stop:#ff8a5b; --care:#ff5d73; --accent:#5b9dff;
  --r:14px;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0;background:var(--bg);color:var(--fg)}
body{
  font:16px/1.6 -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  padding-bottom:env(safe-area-inset-bottom);
  overscroll-behavior:none;
}
#app{max-width:520px;margin:0 auto;padding:16px 16px 40px}

h1{font-size:22px;margin:4px 0 2px;letter-spacing:.5px}
h2{font-size:17px;margin:22px 0 10px;color:var(--fg)}
h3{font-size:14px;margin:0 0 8px;color:var(--dim);font-weight:600}
p{margin:8px 0}
.sub{color:var(--dim);font-size:14px;margin:0 0 18px}
.tiny{font-size:12px;color:var(--faint);line-height:1.55}
.center{text-align:center}
.mono{font-variant-numeric:tabular-nums}

.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px;margin:12px 0}
.card.tight{padding:12px 14px}
.row{display:flex;align-items:center;gap:10px}
.row.between{justify-content:space-between}
.grow{flex:1}

button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
.btn{
  display:block;width:100%;padding:15px 18px;border-radius:12px;background:var(--accent);
  color:#08101f;font-weight:700;font-size:17px;text-align:center;margin:10px 0;
  transition:transform .08s, opacity .15s;
}
.btn:active{transform:scale(.985)}
.btn[disabled]{opacity:.4}
.btn.ghost{background:var(--card2);color:var(--fg);border:1px solid var(--line);font-weight:600}
.btn.danger{background:var(--care);color:#22070c}
.btn.big{padding:22px;font-size:20px}
.btn.sm{padding:10px 14px;font-size:14px;width:auto;display:inline-block;margin:0}

.grid{display:grid;gap:8px}
.grid.g2{grid-template-columns:1fr 1fr}
.grid.g3{grid-template-columns:repeat(3,1fr)}

.chip{
  padding:11px 8px;border-radius:11px;border:1px solid var(--line);background:var(--card2);
  text-align:center;font-size:14px;color:var(--dim)
}
.chip.on{border-color:var(--accent);color:var(--fg);background:#1b2739;font-weight:600}
.chip small{display:block;font-size:11px;color:var(--faint);margin-top:2px}

input,select{
  width:100%;padding:13px 14px;border-radius:11px;border:1px solid var(--line);
  background:var(--card2);color:var(--fg);font:inherit;margin:6px 0 2px
}
label{font-size:13px;color:var(--dim)}

.nav{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:20px}
.nav a{
  text-decoration:none;color:var(--dim);background:var(--card);border:1px solid var(--line);
  border-radius:12px;padding:12px 4px;text-align:center;font-size:12px
}
.nav a span{display:block;font-size:20px;margin-bottom:3px}

.banner{border-radius:12px;padding:12px 14px;font-size:14px;margin:10px 0;border:1px solid}
.banner.info{background:#152238;border-color:#254170;color:#bcd4ff}
.banner.warn{background:#2a2213;border-color:#5a4718;color:#ffe0a3}
.banner.err{background:#2c1519;border-color:#6b2630;color:#ffc0c8}

/* ---- 指数环 ---- */
.ring{width:200px;height:200px;margin:6px auto 2px;position:relative}
.ring svg{transform:rotate(-90deg)}
.ring .val{
  position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center
}
.ring .num{font-size:52px;font-weight:800;line-height:1;font-variant-numeric:tabular-nums}
.ring .lab{font-size:12px;color:var(--dim);margin-top:6px;letter-spacing:2px}

.lvl-ok{color:var(--ok)} .lvl-warn{color:var(--warn)}
.lvl-stop{color:var(--stop)} .lvl-care{color:var(--care)}

.bar{height:8px;border-radius:5px;background:var(--card2);overflow:hidden;margin:5px 0 2px}
.bar i{display:block;height:100%;border-radius:5px;background:var(--accent)}

/* ---- 任务界面 ---- */
.stage{
  min-height:74vh;display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;gap:14px
}
.huge{font-size:88px;font-weight:800;line-height:1;font-variant-numeric:tabular-nums}
.reading{font-size:26px;line-height:1.85;font-weight:600;letter-spacing:1px;padding:0 6px}

.dsst-legend{display:grid;grid-template-columns:repeat(9,1fr);gap:4px;margin-bottom:14px}
.dsst-legend div{
  background:var(--card2);border:1px solid var(--line);border-radius:8px;padding:6px 0;text-align:center
}
.dsst-legend .sym{font-size:19px;line-height:1.2}
.dsst-legend .num{font-size:11px;color:var(--dim)}
.dsst-target{font-size:96px;line-height:1;margin:18px 0 22px;text-align:center}
.dsst-pad{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.dsst-pad button{
  padding:20px 0;font-size:26px;font-weight:700;border-radius:14px;
  background:var(--card2);border:1px solid var(--line)
}
.dsst-pad button:active{background:#2b3444}
.flash-ok{animation:fok .18s} .flash-no{animation:fno .18s}
@keyframes fok{from{background:#1d3b2c}} @keyframes fno{from{background:#3b1d22}}

table.feat{width:100%;border-collapse:collapse;font-size:13px}
table.feat td{padding:6px 4px;border-bottom:1px solid var(--line);vertical-align:middle}
table.feat td:first-child{color:var(--dim)}
table.feat td:last-child{text-align:right;font-variant-numeric:tabular-nums}
details summary{cursor:pointer;color:var(--dim);font-size:14px;padding:6px 0}

.spin{width:34px;height:34px;border:3px solid var(--line);border-top-color:var(--accent);
  border-radius:50%;animation:sp .8s linear infinite;margin:20px auto}
@keyframes sp{to{transform:rotate(360deg)}}

.list-item{display:flex;justify-content:space-between;align-items:center;padding:11px 0;border-bottom:1px solid var(--line)}
.list-item:last-child{border-bottom:0}
.rank{width:26px;font-weight:800;color:var(--dim);font-size:15px}