/* 事故风险测算台 — 深空青绿主题 */
:root{
  --bg:#04100e;
  --bg2:#061815;
  --panel:rgba(9,34,30,.72);
  --panel2:rgba(6,26,23,.6);
  --line:rgba(46,230,168,.16);
  --line2:rgba(46,230,168,.30);
  --accent:#2ee6a8;
  --accent2:#31c9e0;
  --warn:#ffb545;
  --danger:#ff5d6c;
  --text:#e6f6f1;
  --muted:#83a8a1;
  --dim:#5d827c;
  --radius:16px;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",sans-serif;
  font-size:15px;line-height:1.65;min-height:100vh;overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(1200px 620px at 12% -12%, rgba(46,230,168,.16), transparent 62%),
    radial-gradient(900px 520px at 92% -4%, rgba(49,201,224,.12), transparent 60%),
    radial-gradient(800px 600px at 50% 110%, rgba(46,230,168,.06), transparent 60%),
    linear-gradient(180deg,#04100e,#03100d 60%,#020c0a);
}
.grid-bg{
  position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.5;
  background-image:
    linear-gradient(rgba(46,230,168,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(46,230,168,.055) 1px,transparent 1px);
  background-size:46px 46px;
  mask-image:radial-gradient(circle at 50% 20%,#000 30%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 20%,#000 30%,transparent 78%);
}
a{color:inherit;text-decoration:none}
::selection{background:rgba(46,230,168,.3)}

/* ---------------- topbar ---------------- */
.topbar{
  position:sticky;top:0;z-index:40;display:flex;align-items:center;gap:24px;
  padding:14px clamp(16px,4vw,56px);
  background:rgba(4,16,14,.72);backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(46,230,168,.12);
}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:.5px}
.logo{
  width:30px;height:30px;display:grid;place-items:center;border-radius:9px;
  background:linear-gradient(135deg,rgba(46,230,168,.22),rgba(49,201,224,.12));
  border:1px solid var(--line2);color:var(--accent);font-size:15px;
  box-shadow:0 0 18px rgba(46,230,168,.25);
}
.brand-t{font-size:16px}
.ver{font-size:11px;color:var(--accent);border:1px solid var(--line2);border-radius:20px;padding:1px 7px;letter-spacing:.5px}
.nav{display:flex;gap:6px;margin-left:auto}
.nav a{padding:6px 14px;border-radius:20px;color:var(--muted);font-size:14px;transition:.2s}
.nav a:hover,.nav a.on{color:var(--accent);background:rgba(46,230,168,.08)}
.engine-state{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--muted);padding-left:18px;border-left:1px solid rgba(255,255,255,.07)}
.engine-state i{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 0 rgba(46,230,168,.6);animation:pulse 2.4s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(46,230,168,.55)}70%{box-shadow:0 0 0 9px rgba(46,230,168,0)}100%{box-shadow:0 0 0 0 rgba(46,230,168,0)}}

main{max-width:1240px;margin:0 auto;padding:0 clamp(16px,4vw,40px) 40px}

/* ---------------- hero ---------------- */
.hero{display:grid;grid-template-columns:1fr 320px;gap:32px;align-items:center;padding:56px 0 40px}
.eyebrow{font-family:"SF Mono",Consolas,monospace;font-size:11.5px;letter-spacing:2.6px;color:var(--accent);opacity:.85}
.hero h1{font-size:clamp(34px,5vw,54px);line-height:1.15;margin:12px 0 14px;letter-spacing:1px;font-weight:800}
.hl{
  background:linear-gradient(120deg,var(--accent),var(--accent2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  position:relative;
}
.hl::after{content:"";position:absolute;left:0;right:0;bottom:4px;height:8px;background:rgba(46,230,168,.14);z-index:-1;border-radius:4px}
.sub{color:var(--muted);font-size:15px;max-width:560px}
.chips{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}
.chips span{
  font-size:12.5px;color:#b9ded5;padding:5px 13px;border-radius:20px;
  border:1px solid var(--line);background:rgba(46,230,168,.05);
}
.hero-r{display:flex;flex-direction:column;align-items:center;gap:16px}
.orb{position:relative;width:250px;height:250px;display:grid;place-items:center}
.orb-ring{position:absolute;inset:0;border-radius:50%;border:1px dashed rgba(46,230,168,.25);animation:spin 26s linear infinite}
.orb-ring.r2{inset:20px;border-style:solid;border-color:rgba(49,201,224,.18);animation-direction:reverse;animation-duration:34s}
@keyframes spin{to{transform:rotate(360deg)}}
.orb-core{
  width:186px;height:186px;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;
  background:radial-gradient(circle at 50% 35%,rgba(46,230,168,.20),rgba(6,26,23,.9) 68%);
  border:1px solid var(--line2);box-shadow:0 0 60px rgba(46,230,168,.18) inset,0 0 40px rgba(46,230,168,.10);
}
.orb-core em{font-style:normal;font-size:46px;font-weight:800;letter-spacing:1px;font-variant-numeric:tabular-nums;
  background:linear-gradient(120deg,#d9fff3,var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.orb-core span{font-size:12px;color:var(--muted);letter-spacing:1px;margin-top:2px}
.orb-note{font-size:12px;color:var(--dim);margin:0}

/* ---------------- panel ---------------- */
.panel{
  background:linear-gradient(180deg,rgba(10,36,32,.78),rgba(6,26,23,.62));
  border:1px solid var(--line);border-radius:var(--radius);
  padding:26px clamp(16px,3vw,30px);margin-bottom:26px;
  box-shadow:0 24px 60px rgba(0,0,0,.35),inset 0 1px 0 rgba(255,255,255,.03);
  backdrop-filter:blur(6px);
}
.panel-hd{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:20px}
.panel-hd h2{font-size:18px;margin:0;letter-spacing:.5px;display:flex;align-items:center;gap:10px;font-weight:700}
.panel-hd h2 b{
  font-family:"SF Mono",Consolas,monospace;font-size:12px;color:var(--accent);
  border:1px solid var(--line2);border-radius:6px;padding:2px 6px;font-weight:600;
}
.hint{margin-left:auto;font-size:12.5px;color:var(--warn);background:rgba(255,181,69,.08);
  border:1px solid rgba(255,181,69,.22);border-radius:20px;padding:4px 12px}

/* ---------------- ledger table ---------------- */
.table-wrap{overflow-x:auto;border-radius:12px;border:1px solid rgba(46,230,168,.10)}
table.ledger{width:100%;border-collapse:collapse;min-width:620px}
.ledger th{
  text-align:left;font-size:12px;font-weight:600;color:var(--muted);letter-spacing:.6px;
  padding:12px 14px;background:rgba(46,230,168,.045);border-bottom:1px solid rgba(46,230,168,.12);
  white-space:nowrap;
}
.ledger th i,.ledger td i{font-style:normal;color:var(--dim);font-size:11px;margin-left:2px}
.ledger td{padding:9px 14px;border-bottom:1px solid rgba(255,255,255,.045)}
.ledger tr:last-child td{border-bottom:none}
.ledger tr.row:hover{background:rgba(46,230,168,.03)}
.ledger input{
  width:100%;background:rgba(2,14,12,.6);border:1px solid rgba(46,230,168,.16);border-radius:9px;
  color:var(--text);padding:9px 11px;font-size:14px;font-family:inherit;font-variant-numeric:tabular-nums;
  transition:.18s;outline:none;
}
.ledger input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(46,230,168,.12);background:rgba(2,18,15,.9)}
.ledger input.bad{border-color:var(--danger);box-shadow:0 0 0 3px rgba(255,93,108,.12)}
.ledger input[type=number]::-webkit-outer-spin-button,
.ledger input[type=number]::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
.ledger input[type=number]{-moz-appearance:textfield}
.yr{font-family:"SF Mono",Consolas,monospace;color:#bfe9df;font-size:14px}
.del{
  width:30px;height:30px;border-radius:8px;border:1px solid rgba(255,93,108,.22);
  background:rgba(255,93,108,.07);color:#ff8f99;cursor:pointer;font-size:15px;line-height:1;
  transition:.18s;display:grid;place-items:center;
}
.del:hover{background:rgba(255,93,108,.18);color:#fff;border-color:rgba(255,93,108,.5)}
.del:disabled{opacity:.25;cursor:not-allowed}
.row-actions{display:flex;align-items:center;gap:16px;margin-top:14px;flex-wrap:wrap}
.tip{font-size:12px;color:var(--dim)}

/* ---------------- target ---------------- */
.target{margin-top:26px;padding-top:22px;border-top:1px dashed rgba(46,230,168,.15)}
.target-hd{font-size:15px;font-weight:700;margin-bottom:16px;display:flex;align-items:center;gap:10px}
.target-hd b{font-family:"SF Mono",Consolas,monospace;font-size:12px;color:var(--accent);border:1px solid var(--line2);border-radius:6px;padding:2px 6px}
.target-grid{display:grid;grid-template-columns:repeat(3,minmax(140px,1fr)) auto;gap:16px;align-items:end}
.target-grid label{display:flex;flex-direction:column;gap:7px;font-size:12.5px;color:var(--muted)}
.target-grid label i{font-style:normal;color:var(--dim);font-size:11px}
.target-grid input{
  background:rgba(2,14,12,.6);border:1px solid rgba(46,230,168,.2);border-radius:10px;color:var(--text);
  padding:11px 13px;font-size:15px;font-family:inherit;font-variant-numeric:tabular-nums;outline:none;transition:.18s;
}
.target-grid input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(46,230,168,.12)}
.err{color:var(--danger);font-size:13px;min-height:20px;margin:12px 0 0}

/* ---------------- buttons ---------------- */
.btn{
  border:none;border-radius:11px;padding:12px 22px;font-size:14.5px;font-family:inherit;font-weight:600;
  cursor:pointer;transition:.18s;display:inline-flex;align-items:center;gap:8px;white-space:nowrap;
}
.btn.primary{
  background:linear-gradient(135deg,#38f2b6,#14b98a);color:#04120f;
  box-shadow:0 10px 26px rgba(46,230,168,.22),inset 0 1px 0 rgba(255,255,255,.35);
}
.btn.primary:hover{transform:translateY(-1px);box-shadow:0 14px 32px rgba(46,230,168,.32)}
.btn.primary:active{transform:translateY(0)}
.btn.primary[disabled]{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}
.btn.ghost{background:rgba(46,230,168,.06);border:1px solid var(--line);color:#b7e2d8}
.btn.ghost:hover{background:rgba(46,230,168,.12);border-color:var(--line2);color:#fff}
.btn.full{width:100%;justify-content:center}
#calcBtn{padding:12px 28px}
#calcBtn.loading{opacity:.7;pointer-events:none}

/* ---------------- kpi ---------------- */
.kpis{display:grid;grid-template-columns:1.25fr 1fr 1fr 1fr;gap:14px}
.kpi{
  background:linear-gradient(180deg,rgba(46,230,168,.06),rgba(2,14,12,.35));
  border:1px solid var(--line);border-radius:14px;padding:18px 18px 16px;
  display:flex;flex-direction:column;gap:4px;position:relative;overflow:hidden;
}
.kpi::after{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--accent),transparent);opacity:.6}
.k-label{font-size:12.5px;color:var(--muted);letter-spacing:.4px}
.kpi strong{font-size:32px;font-weight:800;font-variant-numeric:tabular-nums;letter-spacing:.5px;line-height:1.25;
  background:linear-gradient(120deg,#eafff9,#7ff0cd);-webkit-background-clip:text;background-clip:text;color:transparent}
.kpi.big strong{font-size:44px;background:linear-gradient(120deg,#ffffff,var(--accent));-webkit-background-clip:text;background-clip:text}
.kpi strong.sm{font-size:19px;line-height:1.45;background:none;-webkit-text-fill-color:initial;color:#d7f5ec}
.k-unit{font-size:11.5px;color:var(--dim)}
.lv.low{background:none;-webkit-text-fill-color:#2ee6a8;color:#2ee6a8}
.lv.medium{background:none;-webkit-text-fill-color:#e8d44d;color:#e8d44d}
.lv.high{background:none;-webkit-text-fill-color:#ffb545;color:#ffb545}
.lv.critical{background:none;-webkit-text-fill-color:#ff5d6c;color:#ff5d6c}
.up{color:#ff5d6c!important;-webkit-text-fill-color:#ff5d6c!important}
.down{color:#2ee6a8!important;-webkit-text-fill-color:#2ee6a8!important}

/* ---------------- charts ---------------- */
.charts{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.chart-card{background:rgba(2,14,12,.35);border:1px solid rgba(46,230,168,.10);border-radius:14px;padding:14px 8px 4px}
.chart-card.wide{grid-column:1/-1}
.cc-hd{font-size:13px;color:#c9ece3;padding:0 10px 6px;display:flex;gap:8px;align-items:baseline}
.cc-hd i{font-style:normal;font-size:11px;color:var(--dim)}
.chart{width:100%;height:270px}
.chart-card.wide .chart{height:300px}

/* ---------------- advice ---------------- */
.advice{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}
.advice li{
  position:relative;padding:14px 16px 14px 46px;border-radius:12px;
  background:rgba(46,230,168,.045);border:1px solid rgba(46,230,168,.10);font-size:14px;color:#d6f0e9;
}
.advice li::before{
  content:"▸";position:absolute;left:18px;top:13px;color:var(--accent);font-size:15px;
}
.advice li.warn{background:rgba(255,181,69,.06);border-color:rgba(255,181,69,.2)}
.advice li.warn::before{content:"⚠";color:var(--warn)}
.advice li strong{color:#fff}
.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px;padding-top:20px;border-top:1px dashed rgba(46,230,168,.13)}

/* ---------------- doc ---------------- */
.doc-body{color:#c4e2db;font-size:14px}
.doc-body h3{color:var(--accent);font-size:15px;margin:22px 0 8px;letter-spacing:.4px}
.doc-body h3:first-child{margin-top:0}
.doc-body p{margin:8px 0;color:#a9cbc4}
.doc-body ul{margin:8px 0;padding-left:20px;color:#a9cbc4}
.doc-body li{margin:5px 0}
.doc-body b{color:#e6fff8}

/* ---------------- footer ---------------- */
.foot{
  max-width:1240px;margin:0 auto;padding:30px clamp(16px,4vw,40px) 50px;
  display:flex;gap:20px;flex-wrap:wrap;justify-content:space-between;
  font-size:12px;color:var(--dim);border-top:1px solid rgba(46,230,168,.08);
}
.foot-dim{color:#41605b}

/* ---------------- modal ---------------- */
.modal{
  position:fixed;inset:0;z-index:100;display:none;place-items:center;padding:24px;
  background:rgba(1,8,7,.78);backdrop-filter:blur(8px);
}
.modal.show{display:grid}
.modal-box{
  width:min(620px,100%);max-height:88vh;overflow:auto;border-radius:18px;padding:28px;
  background:linear-gradient(180deg,#0a2620,#061a16);
  border:1px solid rgba(46,230,168,.28);
  box-shadow:0 40px 100px rgba(0,0,0,.7),0 0 0 6px rgba(46,230,168,.04);
  animation:pop .28s cubic-bezier(.2,.9,.3,1.2);
}
@keyframes pop{from{opacity:0;transform:translateY(14px) scale(.97)}to{opacity:1;transform:none}}
.modal-box h3{margin:0 0 14px;font-size:20px;letter-spacing:.5px}
.modal-box p{color:#a9cbc4;font-size:14px;margin:10px 0}
.modal-box .dim{color:var(--dim);font-size:12.5px}
.dm-hd{display:flex;align-items:center;gap:14px;margin-bottom:8px}
.dm-badge{
  font-size:12px;letter-spacing:1px;color:#ffe3b0;background:rgba(255,181,69,.13);
  border:1px solid rgba(255,181,69,.35);border-radius:20px;padding:4px 14px;font-weight:600;
}
.dm-hd h3{margin:0}
.dm-body{border:1px solid rgba(255,181,69,.18);border-radius:12px;padding:4px 18px;background:rgba(255,181,69,.03);margin:14px 0 18px}
.dm-body p{font-size:13.5px;line-height:1.8}
.dm-body b{color:#ffe3b0}
.dm-check{display:flex;gap:12px;align-items:flex-start;font-size:13.5px;color:#c4e2db;cursor:pointer;margin-bottom:18px}
.dm-check input{
  appearance:none;width:20px;height:20px;border-radius:6px;border:1px solid rgba(46,230,168,.4);
  background:rgba(2,14,12,.6);cursor:pointer;flex:none;margin-top:2px;position:relative;transition:.18s;
}
.dm-check input:checked{background:var(--accent);border-color:var(--accent)}
.dm-check input:checked::after{content:"✓";position:absolute;inset:0;display:grid;place-items:center;color:#04120f;font-size:13px;font-weight:900}

.hidden{display:none!important}
section[id],div[id]{scroll-margin-top:76px}
.reveal{animation:rise .5s ease both}
@keyframes rise{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}

/* ---------------- responsive ---------------- */
@media (max-width:900px){
  .hero{grid-template-columns:1fr;padding:34px 0 24px}
  .hero-r{order:-1;transform:scale(.86)}
  .kpis{grid-template-columns:1fr 1fr}
  .charts{grid-template-columns:1fr}
  .chart-card.wide{grid-column:auto}
  .target-grid{grid-template-columns:1fr 1fr}
  .nav{gap:6px;margin-left:auto}
  .nav a{padding:6px 9px;font-size:13px}
  .nav a[href="#input"]{display:none}
  .engine-state{margin-left:12px;padding-left:0;border:none;font-size:11px}
}
@media (max-width:560px){
  .topbar{padding:12px 16px;gap:12px}
  .brand-t{font-size:14px}
  .ver{display:none}
  .kpis{grid-template-columns:1fr}
  .kpi.big strong{font-size:38px}
  .target-grid{grid-template-columns:1fr}
  #calcBtn{width:100%;justify-content:center}
  .engine-state{display:none}
  .nav a{padding:5px 7px;font-size:12px}
  .hero{padding:18px 0 8px}
  .hero-r{display:none}
  .hero-l .eyebrow{font-size:9.5px;letter-spacing:2px}
  .hero-l h1{font-size:30px}
  .hero-l .sub{font-size:13px}
  /* 台账表在手机上改成卡片式，避免横向滚动 */
  .table-wrap{overflow:visible;border:none;border-radius:0}
  table.ledger{min-width:0;display:block}
  .ledger thead{display:none}
  .ledger tbody{display:block}
  .ledger tr.row{display:block;border:1px solid rgba(46,230,168,.16);border-radius:14px;margin-bottom:10px;padding:6px 2px;background:rgba(46,230,168,.02)}
  .ledger td{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:6px 12px;border-bottom:none}
  .ledger td[data-l]::before{content:attr(data-l);font-size:12px;color:var(--muted);flex:0 0 auto;letter-spacing:.4px}
  .ledger td:first-child{padding-top:9px}
  .ledger td:first-child .yr{font-size:15px}
  .ledger td:last-child{justify-content:flex-end;padding:0 12px 10px}
  .ledger td input{max-width:52%}
  .ledger .del{width:30px;height:30px}
  .foot{flex-direction:column;gap:8px}
}

/* ---------------- print ---------------- */
@media print{
  body{background:#fff;color:#111}
  body::before,.grid-bg,.topbar,.hero,.foot,.actions,#input,.doc,.modal{display:none!important}
  .panel{background:#fff;border:1px solid #ddd;box-shadow:none;break-inside:avoid;page-break-inside:avoid}
  .k-label,.k-unit,.cc-hd i,.hint{color:#666}
  .kpi strong,.kpi.big strong{background:none;-webkit-text-fill-color:#111;color:#111}
  .advice li{background:#f7f9f8;border-color:#e2e8e6;color:#222}
  .chart-card{background:#fff;border-color:#e6ebe9}
}