:root{
  --bg:#f4f7f9; --panel:#ffffff; --text:#12262f; --muted:#5c7583;
  --border:#dbe6ea; --accent:#0d6a86; --accent2:#1490b0;
  /* rating ramp 0(很差)->4(很好): luminance increases monotonically so the
     order still reads correctly in grayscale/colorblind rendering, and hues
     shift red->orange->amber->green->teal so it isn't a red/green-only cue. */
  --r0:#5c1228; --r1:#c1512e; --r2:#d9a441; --r3:#a8cf7a; --r4:#7fe0c9;
  --warn-bg:#fdecea; --warn-text:#8a2318; --warn-border:#f3b7ae;
  --neutral-bg:#eef2f4; --neutral-text:#4a5c66;
  --alert-bg:#fdecea; --alert-text:#7a1420;
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#0d1b21; --panel:#132831; --text:#e6f0f3; --muted:#8fa9b4;
    --border:#234049; --accent:#4db8d8; --accent2:#63c9e0;
    --r0:#8a2740; --r1:#c1512e; --r2:#d9a441; --r3:#a8cf7a; --r4:#7fe0c9;
    --warn-bg:#3a1b17; --warn-text:#f1b3a5; --warn-border:#5c2a20;
    --neutral-bg:#1c333c; --neutral-text:#a8bcc4;
    --alert-bg:#3a1414; --alert-text:#ff9c8f;
  }
}
*{box-sizing:border-box}
body{
  margin:0; background:var(--bg); color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;
  padding-bottom:56px;
}
#app{max-width:960px;margin:0 auto;padding:12px 14px 32px}
a{color:var(--accent);text-decoration:none}
h1,h2,h3{margin:0.2em 0 0.5em}

.site-footer{
  position:fixed;left:0;right:0;bottom:0;background:var(--panel);
  border-top:1px solid var(--border);color:var(--muted);
  font-size:11.5px;line-height:1.4;text-align:center;padding:6px 10px;
}

/* header */
.top-bar{display:flex;justify-content:space-between;align-items:center;padding:10px 2px 14px;flex-wrap:wrap;gap:8px}
.brand{font-weight:700;font-size:20px;color:var(--accent)}
.profile-link{font-size:13px;color:var(--muted);border:1px solid var(--border);padding:4px 10px;border-radius:14px;background:var(--panel)}
.profile-link:hover{color:var(--accent)}

/* cards */
.spot-card{
  background:var(--panel);border:1px solid var(--border);border-radius:12px;
  padding:14px;margin-bottom:14px;cursor:pointer;transition:box-shadow .15s;
}
.spot-card:hover{box-shadow:0 2px 10px rgba(0,0,0,.08)}
.card-head{display:flex;justify-content:space-between;align-items:flex-start;gap:8px;flex-wrap:wrap}
.card-title{font-size:16px;font-weight:600}
.badges{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.badge-score{background:var(--accent);color:#fff;font-weight:700;border-radius:8px;padding:3px 9px;font-size:13px}
.badge-conf{font-size:12px;color:var(--muted);display:flex;gap:4px;align-items:center}
.conf-dots{letter-spacing:1px;font-size:12px}
.low-conf-note{font-size:12px;color:var(--warn-text);margin-top:4px}

.alert-pin{background:var(--alert-bg);color:var(--alert-text);border-radius:8px;padding:6px 10px;font-size:13px;font-weight:600;margin:8px 0}

.band-wrap{margin:10px 0 4px}
.key-numbers{font-size:13px;color:var(--text);margin:6px 0}
.chip-row{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.chip{font-size:11.5px;border-radius:12px;padding:3px 9px;border:1px solid transparent}
.chip.warn{background:var(--warn-bg);color:var(--warn-text);border-color:var(--warn-border)}
.chip.neutral{background:var(--neutral-bg);color:var(--neutral-text)}

/* detail */
.back-link{display:inline-block;margin-bottom:10px;font-size:13px}
.detail-head{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:14px;margin-bottom:14px}
.detail-meta{color:var(--muted);font-size:12.5px;margin-top:4px}
.section{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:14px;margin-bottom:14px}
.section h3{font-size:14px;color:var(--accent);text-transform:none}
.caption{font-size:12px;color:var(--muted);margin-top:6px}

.chart-wrap{position:relative}
svg.chart{width:100%;height:auto;display:block}
.tooltip{
  position:absolute;background:var(--panel);border:1px solid var(--border);
  border-radius:8px;padding:8px 10px;font-size:11.5px;line-height:1.5;
  box-shadow:0 4px 14px rgba(0,0,0,.18);pointer-events:none;white-space:normal;z-index:5;
  max-width:min(230px,calc(100% - 16px));
}

table.data-table{width:100%;border-collapse:collapse;font-size:12px;margin-top:8px}
table.data-table th,table.data-table td{border-bottom:1px solid var(--border);padding:4px 6px;text-align:right;white-space:nowrap}
table.data-table th:first-child,table.data-table td:first-child{text-align:left}
table.data-table th{color:var(--muted);font-weight:600;position:sticky;top:0;background:var(--panel)}
.table-scroll{overflow-x:auto}

.thresh-table{width:100%;border-collapse:collapse;font-size:13px}
.thresh-table th,.thresh-table td{border-bottom:1px solid var(--border);padding:8px 6px;text-align:left}
.thresh-table th{color:var(--muted);width:45%}

.legend{display:flex;gap:12px;flex-wrap:wrap;font-size:11.5px;color:var(--muted);margin-top:6px;align-items:center}
.legend-item{display:inline-flex;align-items:center;gap:4px}
.legend-swatch{display:inline-block;width:10px;height:10px;border-radius:2px;margin-right:4px;vertical-align:middle}

.live-line{font-size:13.5px}
.small-muted{color:var(--muted);font-size:12px}

/* top bar links */
.top-links{display:flex;gap:8px;flex-wrap:wrap}

/* refresh / retry / primary buttons */
.refresh-btn,.retry-btn,.primary-btn{
  font-size:13px;border:1px solid var(--border);border-radius:14px;
  padding:4px 10px;background:var(--panel);color:var(--muted);cursor:pointer;
}
.refresh-btn{padding:2px 8px;font-size:15px;line-height:1}
.refresh-btn:hover,.retry-btn:hover{color:var(--accent);border-color:var(--accent)}
.primary-btn{background:var(--accent);color:#fff;border-color:var(--accent)}
.fetch-time{font-size:11.5px;color:var(--muted);margin-top:6px;display:flex;align-items:center;gap:8px}

/* skeleton loading */
.skeleton-line{height:14px;border-radius:6px;background:var(--neutral-bg);margin:8px 0;animation:pulse 1.2s ease-in-out infinite}
.skeleton-line.short{width:60%}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:0.5}}

/* spot management list */
.spot-list-row{display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-top:1px solid var(--border)}
.spot-list-row:first-of-type{border-top:none}
.spot-list-actions{display:flex;gap:8px}

/* spot form */
.form-row{display:block;margin:10px 0;font-size:13px;color:var(--muted)}
.form-row input[type="text"],.form-row input[type="number"],.form-row select{
  display:block;width:100%;margin-top:4px;padding:7px 9px;border:1px solid var(--border);
  border-radius:8px;background:var(--bg);color:var(--text);font-size:14px;box-sizing:border-box;
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 12px}
.compass-wrap{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:8px}
.compass-readout{display:flex;align-items:center;gap:6px;font-size:14px;color:var(--text)}
.compass-readout input{width:70px;padding:6px 8px;border:1px solid var(--border);border-radius:8px;background:var(--bg);color:var(--text)}