/* 站点共享样式：电子海图配色（日间浅色 / 夜间深色） */
:root{
  --bg:#E7ECEC; --panel:#F8FAF9; --panel-2:#EEF3F3; --ink:#15222A; --muted:#566871; --line:#C8D3D5; --line-2:#DCE4E5;
  --land:#E2D3A4; --land-edge:#B9A676; --d1:#7FB0D3; --d2:#9EC5E0; --d3:#C0DAEA; --d4:#DCEAF1; --d5:#F1F6F7;
  --own:#D9651C; --route:#B02D86; --accent:#0F6E8C; --accent-ink:#FFFFFF;
  --ok:#23845A; --warn:#C98A0B; --bad:#C8322C; --target:#1A2A33; --ghost:#7D8C93;
  --shadow:0 1px 2px rgba(20,40,50,.08),0 4px 16px rgba(20,40,50,.06);
  --ui:"Barlow","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans CJK SC","Source Han Sans SC",sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#070D11; --panel:#0D161C; --panel-2:#121E26; --ink:#C3D1D7; --muted:#7D9099; --line:#22323B; --line-2:#1A2830;
    --land:#3A3322; --land-edge:#5C5136; --d1:#1E4863; --d2:#18394F; --d3:#132D3E; --d4:#0F2331; --d5:#0A1922;
    --own:#EE8A42; --route:#CE5CAA; --accent:#4DB3CF; --accent-ink:#04141A;
    --ok:#4CB883; --warn:#E0A935; --bad:#E5564F; --target:#D5E2E7; --ghost:#6B7E87;
    --shadow:0 1px 2px rgba(0,0,0,.4);
  }
}
:root[data-theme="dark"]{
  --bg:#070D11; --panel:#0D161C; --panel-2:#121E26; --ink:#C3D1D7; --muted:#7D9099; --line:#22323B; --line-2:#1A2830;
  --land:#3A3322; --land-edge:#5C5136; --d1:#1E4863; --d2:#18394F; --d3:#132D3E; --d4:#0F2331; --d5:#0A1922;
  --own:#EE8A42; --route:#CE5CAA; --accent:#4DB3CF; --accent-ink:#04141A;
  --ok:#4CB883; --warn:#E0A935; --bad:#E5564F; --target:#D5E2E7; --ghost:#6B7E87;
  --shadow:0 1px 2px rgba(0,0,0,.4);
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{background:var(--bg);color:var(--ink);margin:0}
body{font-family:var(--ui);font-size:14px;line-height:1.5;padding-inline:16px;padding-block:0 24px}
button,select,input{font:inherit;color:inherit}
.num,.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
h1,h2,h3{margin:0;text-wrap:balance;font-weight:600}
a{color:var(--accent)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:30;background:var(--bg);display:flex;align-items:center;gap:18px;flex-wrap:wrap;padding-block:12px;border-bottom:1px solid var(--line);margin-bottom:14px}
.brand{display:flex;align-items:baseline;gap:10px}
.brand h1{font-size:19px;letter-spacing:.02em}
.brand .sub{font-size:12px;color:var(--muted);letter-spacing:.08em;text-transform:uppercase}
.sitenav{display:flex;gap:2px;background:var(--panel-2);border:1px solid var(--line);border-radius:8px;padding:3px}
.sitenav a{display:block;padding:6px 14px;border-radius:6px;color:var(--muted);text-decoration:none;font-weight:500;white-space:nowrap}
.sitenav a[aria-current="page"]{background:var(--panel);color:var(--ink);box-shadow:var(--shadow)}
.sitenav a:hover{color:var(--ink)}
.top .spacer{flex:1}

.panel{background:var(--panel);border:1px solid var(--line);border-radius:10px}
.panelhead{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:10px 12px;border-bottom:1px solid var(--line-2)}
.eyebrow{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);font-weight:600}
.chip{display:inline-flex;align-items:center;gap:6px;font-size:12px;padding:2px 8px;border-radius:999px;border:1px solid var(--line);color:var(--muted);white-space:nowrap}
.chip.ok{color:var(--ok);border-color:color-mix(in srgb,var(--ok) 40%,transparent)}
.chip.warn{color:var(--warn);border-color:color-mix(in srgb,var(--warn) 45%,transparent)}
.chip.bad{color:var(--bad);border-color:color-mix(in srgb,var(--bad) 45%,transparent)}
.chip.plan{color:var(--accent);border-color:color-mix(in srgb,var(--accent) 40%,transparent)}
.dot{width:7px;height:7px;border-radius:50%;background:currentColor}
.btn{border:1px solid var(--line);background:var(--panel);padding:7px 12px;border-radius:7px;cursor:pointer;font-weight:500;white-space:nowrap}
.btn:hover{border-color:var(--accent)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.btn.primary:hover{filter:brightness(1.08)}
.btn.sm{padding:4px 9px;font-size:12px}
.btn.on{border-color:var(--own);color:var(--own)}
.btn[disabled]{opacity:.5;cursor:not-allowed}
label.f{display:grid;gap:4px;font-size:12px;color:var(--muted)}
label.ck{display:flex;align-items:center;gap:7px;font-size:13px;color:var(--ink)}
select,input[type=number]{background:var(--panel-2);border:1px solid var(--line);border-radius:6px;padding:5px 8px;width:100%;min-width:0}
input[type=range]{width:100%;accent-color:var(--accent)}
.muted{color:var(--muted)}
.note{font-size:12px;color:var(--muted);margin-top:14px}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto}}