:root{
  --bg:#070b14;
  --bg2:#0b1220;
  --panel:rgba(18,26,44,.72);
  --line:rgba(120,170,255,.14);
  --txt:#e8eefc;
  --dim:#8798b8;
  --cyan:#25e0d0;
  --blue:#4b8dff;
  --violet:#8a6bff;
  --pink:#ff5c9d;
  --ok:#2ee6a8;
  --warn:#ffb020;
  --bad:#ff5d6c;
  --r:18px;
  --safe-b:env(safe-area-inset-bottom,0px);
}

*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{height:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--txt);
  font:15px/1.5 -apple-system,BlinkMacSystemFont,"SF Pro SC","PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  padding:calc(env(safe-area-inset-top,0px) + 10px) 14px calc(var(--safe-b) + 18px);
  overflow-x:hidden;
  min-height:100%;
  position:relative;
}
/* 背景 */
.bg-grid{
  position:fixed;inset:-2px;z-index:-2;pointer-events:none;
  background:
    linear-gradient(rgba(80,140,255,.055) 1px,transparent 1px) 0 0/100% 44px,
    linear-gradient(90deg,rgba(80,140,255,.055) 1px,transparent 1px) 0 0/44px 100%,
    radial-gradient(120% 80% at 50% -10%,#101a2e 0%,#070b14 62%);
  mask-image:radial-gradient(120% 90% at 50% 0%,#000 40%,transparent 100%);
}
.bg-glow{
  position:fixed;z-index:-1;pointer-events:none;
  width:70vw;height:70vw;left:50%;top:-34vw;transform:translateX(-50%);
  background:radial-gradient(circle,rgba(37,224,208,.20),rgba(75,141,255,.12) 42%,transparent 68%);
  filter:blur(6px);
}

/* 顶栏 */
.topbar{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:2px 2px 12px}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand-mark{width:36px;height:36px;flex:none;filter:drop-shadow(0 0 10px rgba(37,224,208,.45))}
.brand-text{min-width:0}
.brand-text h1{margin:0;font-size:17px;letter-spacing:.4px;display:flex;align-items:baseline;gap:4px;white-space:nowrap}
.brand-text h1 .dot{color:var(--cyan)}
.brand-text h1 em{font-style:normal;font-size:12px;color:var(--dim);font-weight:500;letter-spacing:1px}
.brand-text p{margin:1px 0 0;font-size:11.5px;color:var(--dim);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:62vw}
.ghost-btn{
  appearance:none;border:1px solid var(--line);background:rgba(255,255,255,.03);color:var(--txt);
  padding:7px 12px;border-radius:11px;font-size:12.5px;font-weight:600;flex:none;
}
.ghost-btn.danger{color:var(--bad);border-color:rgba(255,93,108,.3)}
.ghost-btn:active{transform:scale(.96)}

/* Tabs */
.tabs{display:flex;gap:6px;background:rgba(255,255,255,.035);border:1px solid var(--line);padding:5px;border-radius:14px;margin-bottom:14px;max-width:100%}
.tab{
  flex:1 1 0;min-width:0;appearance:none;border:0;background:transparent;color:var(--dim);
  padding:9px 0;border-radius:10px;font-size:13.5px;font-weight:600;letter-spacing:.5px;
  transition:.22s;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.tab.active{color:#06121a;background:linear-gradient(135deg,var(--cyan),var(--blue));box-shadow:0 6px 18px -8px rgba(37,224,208,.85)}

.view{display:none;animation:fade .26s ease}
.view.active{display:block}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

/* 仪表盘 */
.gauge-wrap{position:relative;width:min(88vw,380px);margin:4px auto 6px;aspect-ratio:1}
#gauge{width:100%;height:100%;display:block}
.gauge-center{
  position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;
  padding-top:6%;pointer-events:none;
}
.gauge-value{font-size:clamp(34px,11vw,52px);font-weight:800;letter-spacing:-1.5px;
  font-variant-numeric:tabular-nums;
  background:linear-gradient(180deg,#fff,#8fd8ff 70%,#4b8dff);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  text-shadow:0 0 26px rgba(75,141,255,.35);line-height:1}
.gauge-unit{font-size:12px;color:var(--dim);letter-spacing:3px;margin-top:4px;font-weight:600}
.gauge-phase{margin-top:8px;font-size:12px;color:var(--cyan);letter-spacing:1px;min-height:18px}

/* 主按钮 */
.run-btn{
  position:relative;display:flex;align-items:center;justify-content:center;gap:10px;
  width:100%;max-width:420px;margin:6px auto 16px;height:56px;border:0;border-radius:17px;
  background:linear-gradient(135deg,#25e0d0,#4b8dff 55%,#8a6bff);
  color:#04121c;font-size:16px;font-weight:800;letter-spacing:2px;overflow:hidden;
  box-shadow:0 16px 34px -16px rgba(75,141,255,.95),inset 0 1px 0 rgba(255,255,255,.45);
  transition:transform .18s;
}
.run-btn:active{transform:scale(.98)}
.run-btn.running{background:linear-gradient(135deg,#ff5c9d,#8a6bff);color:#20030f}
.run-ring{
  position:absolute;inset:0;border-radius:17px;opacity:0;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.45),transparent);
  transform:translateX(-100%);
}
.run-btn.running .run-ring{opacity:1;animation:sweep 1.5s linear infinite}
@keyframes sweep{to{transform:translateX(100%)}}

/* 统计卡 */
.stat-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px;margin-bottom:12px;max-width:100%}
.stat-grid.tight{grid-template-columns:repeat(3,minmax(0,1fr))}
.stat{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r);
  padding:11px 10px 10px;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  position:relative;overflow:hidden;min-width:0;
}
.stat::after{content:"";position:absolute;inset:0 0 auto 0;height:1px;background:linear-gradient(90deg,transparent,rgba(120,200,255,.4),transparent)}
.stat-k{font-size:11px;color:var(--dim);letter-spacing:.6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.stat-v{display:flex;align-items:baseline;gap:2px;margin-top:3px;min-width:0;overflow:hidden}
.stat-v b{font-size:clamp(14px,4.6vw,19px);font-weight:750;font-variant-numeric:tabular-nums;letter-spacing:-.6px;white-space:nowrap;line-height:1.15}
.stat-v b.small{font-size:13px;letter-spacing:0}
.stat-v i{font-style:normal;font-size:9px;color:var(--dim);white-space:nowrap;flex:none}
.stat-sub{font-size:9.5px;color:var(--dim);margin-top:2px;line-height:1.3;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-height:12px}
.stat[data-k="down"] .stat-sub{color:rgba(37,224,208,.75)}
.stat[data-k="up"] .stat-sub{color:rgba(138,107,255,.85)}
.stat[data-k="down"] b{color:var(--cyan)}
.stat[data-k="up"] b{color:var(--violet)}
.stat[data-k="ping"] b{color:var(--blue)}
.stat[data-k="jitter"] b{color:var(--warn)}
.stat[data-k="loss"] b{color:var(--bad)}
.stat[data-k="loaded"] b{color:var(--pink)}

/* 卡片 */
.chart-card,.field-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r);
  padding:12px 13px;margin-bottom:12px;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.card-head{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--dim);margin-bottom:8px;letter-spacing:.6px}
.card-head.row{margin-bottom:10px}
.legend{display:flex;align-items:center;gap:6px;font-size:11px}
.legend i{width:8px;height:8px;border-radius:2px;display:inline-block;margin-left:6px}
.lg-d{background:var(--cyan)}
.lg-u{background:var(--violet)}
.muted{color:var(--dim);font-size:11px}
#chart,#pingChart{width:100%;height:auto;display:block}

/* 进度 */
.progress{height:4px;border-radius:3px;background:rgba(255,255,255,.06);overflow:hidden;margin:2px 0 8px}
.progress-bar{height:100%;width:0;border-radius:3px;background:linear-gradient(90deg,var(--cyan),var(--blue),var(--violet));transition:width .25s ease}
.hint{font-size:11.5px;color:var(--dim);margin:2px 2px 0;line-height:1.6}

/* 表单 */
.field-card label{font-size:11.5px;color:var(--dim);letter-spacing:.6px;display:block;margin-bottom:7px}
.input-row{display:flex;gap:8px}
#pingHost{
  flex:1;min-width:0;background:rgba(4,9,18,.75);border:1px solid var(--line);border-radius:12px;
  color:var(--txt);padding:12px 13px;font-size:15px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  outline:none;transition:.18s;
}
#pingHost:focus{border-color:rgba(37,224,208,.55);box-shadow:0 0 0 3px rgba(37,224,208,.12)}
.solid-btn{
  appearance:none;border:0;border-radius:12px;padding:0 20px;font-size:14px;font-weight:800;letter-spacing:1px;
  background:linear-gradient(135deg,var(--cyan),var(--blue));color:#04121c;
  box-shadow:0 10px 24px -14px rgba(37,224,208,.9);flex:none;
}
.solid-btn:active{transform:scale(.97)}
.solid-btn.stop{background:linear-gradient(135deg,#ff5c9d,#ff8a3d);color:#230611}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin:10px 0 2px}
.chip{
  appearance:none;border:1px solid var(--line);background:rgba(255,255,255,.03);color:var(--dim);
  font-size:11.5px;padding:6px 11px;border-radius:999px;
}
.chip.active{color:#04121c;background:linear-gradient(135deg,var(--cyan),var(--blue));border-color:transparent;font-weight:700}
.opt-row{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:12px}
.opt{font-size:11.5px;color:var(--dim);display:flex;align-items:center;gap:6px}
.opt select{
  background:rgba(4,9,18,.75);color:var(--txt);border:1px solid var(--line);border-radius:9px;
  padding:6px 8px;font-size:12.5px;outline:none;
}
.sw{display:inline-flex;align-items:center;gap:8px;font-size:11.5px;color:var(--dim);flex:none;min-width:0;line-height:1}
.cbx{
  appearance:none;-webkit-appearance:none;margin:0;flex:none;
  width:20px;height:20px;border-radius:6px;
  border:1.5px solid rgba(120,170,255,.42);
  background:rgba(4,9,18,.8);
  display:inline-block;position:relative;cursor:pointer;vertical-align:middle;
  transition:background .18s,border-color .18s;
}
.cbx:checked{
  background:linear-gradient(135deg,var(--cyan),var(--blue));
  border-color:transparent;
}
.cbx:checked::after{
  content:"";position:absolute;left:6px;top:2px;
  width:5px;height:10px;border:solid #04121c;border-width:0 2px 2px 0;
  transform:rotate(45deg);
}
.cbx-txt{white-space:nowrap}

/* 日志 */
.log{
  background:rgba(3,7,14,.82);border:1px solid var(--line);border-radius:14px;
  padding:12px;font-size:11.5px;line-height:1.7;color:#9fd6ff;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  white-space:pre-wrap;word-break:break-all;max-height:44vh;overflow:auto;margin:0;
}

/* 历史 */
.hist-list{display:flex;flex-direction:column;gap:9px}
.hist-item{
  background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:11px 13px;
  display:flex;justify-content:space-between;align-items:center;gap:10px;
}
.hist-item .when{font-size:11px;color:var(--dim)}
.hist-item .nums{display:flex;gap:12px;font-size:12px;font-variant-numeric:tabular-nums}
.hist-item .nums b{font-size:14px;font-weight:750}
.n-d b{color:var(--cyan)}.n-u b{color:var(--violet)}.n-p b{color:var(--blue)}
.empty{color:var(--dim);font-size:12.5px;text-align:center;padding:26px 0}

/* 弹层 */
.sheet{
  border:1px solid var(--line);border-radius:20px;padding:16px;width:min(92vw,420px);
  background:linear-gradient(180deg,#101a2e,#0a1120);color:var(--txt);
  box-shadow:0 30px 80px -30px #000;
}
.sheet::backdrop{background:rgba(2,5,12,.7);backdrop-filter:blur(6px)}
.sheet-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.sheet-head h2{margin:0;font-size:15px;letter-spacing:1px}
.env-list{margin:0 0 12px;display:grid;grid-template-columns:auto 1fr;gap:7px 12px;font-size:12.5px}
.node-box{border-top:1px solid var(--line);padding-top:11px;margin-bottom:10px}
.node-box>label{font-size:11.5px;color:var(--dim);letter-spacing:.6px;display:block;margin-bottom:7px}
#customNode{
  flex:1;min-width:0;background:rgba(4,9,18,.75);border:1px solid var(--line);border-radius:12px;
  color:var(--txt);padding:10px 12px;font-size:13px;outline:none;transition:.18s;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
}
#customNode:focus{border-color:rgba(37,224,208,.55);box-shadow:0 0 0 3px rgba(37,224,208,.12)}
.sheet{max-height:86vh;overflow:auto}
.env-list dt{color:var(--dim);white-space:nowrap}
.env-list dd{margin:0;text-align:right;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;word-break:break-all}

.foot{text-align:center;font-size:10.5px;color:rgba(135,152,184,.6);margin-top:18px;letter-spacing:.4px}

@media (max-width:360px){
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .stat-v b{font-size:17px}
}
@media (min-width:760px){
  body{max-width:720px;margin:0 auto}
  .stat-grid{grid-template-columns:repeat(6,1fr)}
}