:root{
  --ink:#0f172a; --ink2:#334155; --muted:#64748b; --line:#e2e8f0; --bg:#f6f7f9;
  --card:#ffffff; --accent:#0f766e; --accent-2:#115e59; --accent-soft:#ecfdf5;
  --warn:#b45309; --warn-soft:#fffbeb; --bad:#b91c1c; --bad-soft:#fef2f2;
  --ok:#047857; --radius:10px; --shadow:0 1px 2px rgba(15,23,42,.06),0 8px 24px rgba(15,23,42,.05);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--bg); color:var(--ink);
  font:15px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--accent)}
h1,h2,h3{line-height:1.25;margin:0 0 8px}
h1{font-size:26px;letter-spacing:-.01em}
h2{font-size:19px}
h3{font-size:15px}
p{margin:0 0 10px;color:var(--ink2)}
small,.small{font-size:12.5px;color:var(--muted)}
.wrap{max-width:1140px;margin:0 auto;padding:0 20px}

/* top bar */
.topbar{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.topbar .wrap{display:flex;align-items:center;gap:16px;min-height:58px;flex-wrap:wrap}
.brand{font-weight:700;font-size:16px;letter-spacing:-.01em;display:flex;align-items:center;gap:8px}
.brand .dot{width:9px;height:9px;border-radius:50%;background:var(--accent)}
.brand .tag{font-weight:500;font-size:12px;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:1px 8px}
.steps{display:flex;gap:14px;margin-left:12px;font-size:13px}
.steps a{color:var(--muted);text-decoration:none}
.steps a:hover{color:var(--accent)}
.actions{margin-left:auto;display:flex;gap:8px;flex-wrap:wrap}
.btn{font:inherit;font-size:13px;border:1px solid var(--line);background:#fff;color:var(--ink);
  padding:7px 12px;border-radius:8px;cursor:pointer;transition:.15s}
.btn:hover{border-color:#cbd5e1;background:#f8fafc}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}
.btn.primary:hover{background:var(--accent-2)}
.btn.ghost{background:transparent}
.btn.sm{padding:5px 9px;font-size:12.5px}
.btn:disabled{opacity:.45;cursor:not-allowed}

/* cards */
main{padding:26px 0 60px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px 24px;margin-bottom:18px}
.card > .head{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;margin-bottom:4px}
.card > .head .n{color:var(--muted);font-variant-numeric:tabular-nums;font-weight:600}
.help{font-size:13px;color:var(--muted);margin:0 0 16px}

/* hero */
.hero{background:linear-gradient(180deg,#ffffff, #f8fbfa);border-color:#cfe9e2}
.hero h1{font-size:30px}
.hero .lead{font-size:16px;color:var(--ink2);max-width:720px}
.hero .cta{display:flex;gap:10px;margin:16px 0 10px;flex-wrap:wrap}
.hero ul.feat{list-style:none;padding:0;margin:14px 0 0;display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:12px}
.hero ul.feat li{border:1px solid var(--line);border-radius:8px;padding:10px 12px;background:#fff}
.hero ul.feat b{display:block;font-size:13.5px;margin-bottom:2px}
.hero ul.feat span{font-size:12.5px;color:var(--muted)}

/* form */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}
label.f{display:block;font-size:12.5px;color:var(--muted);margin-bottom:5px}
input[type=text],input[type=date],input[type=number],select,textarea{
  width:100%;font:inherit;font-size:14px;color:var(--ink);background:#fff;
  border:1px solid var(--line);border-radius:8px;padding:8px 10px;outline:none}
input:focus,select:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.hint{font-size:12px;color:var(--muted);margin-top:5px}

/* walkthrough */
.qlist{display:grid;gap:6px}
.qrow{display:grid;grid-template-columns:26px 1fr auto;gap:10px;align-items:start;padding:8px 10px;border:1px solid transparent;border-radius:8px}
.qrow:hover{background:#f8fafc;border-color:var(--line)}
.qrow .idx{color:var(--muted);font-size:12.5px;font-variant-numeric:tabular-nums;padding-top:2px}
.qrow .qt{font-size:13.5px;color:var(--ink)}
.qrow .qn{font-size:12px;color:var(--muted);margin-top:2px}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:#fff;flex:none}
.seg button{font:inherit;font-size:12.5px;border:0;background:#fff;color:var(--muted);padding:5px 10px;cursor:pointer;border-right:1px solid var(--line)}
.seg button:last-child{border-right:0}
.seg button.on.yes{background:var(--accent-soft);color:var(--ok);font-weight:600}
.seg button.on.no{background:var(--bad-soft);color:var(--bad);font-weight:600}
.seg button.on.na{background:#f1f5f9;color:var(--ink2);font-weight:600}

/* score table */
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:8px}
table{width:100%;border-collapse:collapse;font-size:13.5px;background:#fff}
th,td{padding:8px 8px;text-align:left;border-bottom:1px solid var(--line);vertical-align:middle}
th.num.asr{white-space:normal;min-width:96px;max-width:130px;line-height:1.3}
thead th{background:#f8fafc;font-size:12.5px;color:var(--muted);font-weight:600;white-space:nowrap}
tbody tr:last-child td{border-bottom:0}
td.cat{min-width:212px}
td.cat .en{display:block;font-size:12px;color:var(--muted)}
td.num,th.num{text-align:center;font-variant-numeric:tabular-nums;white-space:nowrap;padding-left:6px;padding-right:6px}
select.score{width:100px;padding:5px 4px;text-align:center;font-variant-numeric:tabular-nums}
tr.flagged td{background:var(--bad-soft)}
tr.flagged td.cat b{color:var(--bad)}
.badge{display:inline-block;font-size:11.5px;padding:1px 7px;border-radius:999px;border:1px solid transparent;white-space:nowrap}
.badge.flag{background:var(--bad-soft);color:var(--bad);border-color:#fecaca}
.badge.na{background:#f1f5f9;color:var(--muted);border-color:var(--line)}
td.notes{min-width:170px}
td.notes input{width:100%;min-width:0;font-size:13px;padding:5px 8px}
.hintbtn{font:inherit;font-size:12px;color:var(--accent);background:none;border:0;cursor:pointer;padding:0;text-decoration:underline dotted;text-underline-offset:3px}
.hintbox{display:none;margin-top:6px;font-size:12.5px;color:var(--muted);background:#f8fafc;border-left:2px solid var(--accent);padding:8px 10px;border-radius:0 6px 6px 0}
.hintbox.open{display:block}

/* summary */
.summary{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin:16px 0 0}
.stat{border:1px solid var(--line);border-radius:8px;padding:10px 12px;background:#fff}
.stat .k{font-size:12px;color:var(--muted)}
.stat .v{font-size:22px;font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.stat .v small{font-size:12px;font-weight:500;color:var(--muted)}
.gauge{margin:16px 0 4px}
.gauge .bar{position:relative;height:12px;border-radius:999px;background:linear-gradient(90deg,#fecaca,#fde68a,#bbf7d0);overflow:visible}
.gauge .fill{position:absolute;left:0;top:0;bottom:0;border-radius:999px;background:rgba(15,23,42,.18)}
.gauge .pin{position:absolute;top:-6px;width:2px;height:24px;background:var(--ink)}
.gauge .pin span{position:absolute;top:-18px;left:50%;transform:translateX(-50%);font-size:11px;color:var(--muted);white-space:nowrap}
.gauge .scale{display:flex;justify-content:space-between;font-size:11px;color:var(--muted);margin-top:4px;font-variant-numeric:tabular-nums}

/* verdict */
.verdict{display:flex;gap:12px;align-items:flex-start;border-radius:8px;padding:12px 14px;margin:14px 0;border:1px solid}
.verdict .ic{font-weight:700;font-size:13px;padding:2px 8px;border-radius:6px;white-space:nowrap}
.verdict.pass{background:var(--accent-soft);border-color:#a7f3d0}
.verdict.pass .ic{background:#d1fae5;color:var(--ok)}
.verdict.hold{background:var(--warn-soft);border-color:#fde68a}
.verdict.hold .ic{background:#fef3c7;color:var(--warn)}
.verdict.fail{background:var(--bad-soft);border-color:#fecaca}
.verdict.fail .ic{background:#fee2e2;color:var(--bad)}
.verdict.invalid{background:#f1f5f9;border-color:var(--line)}
.verdict.invalid .ic{background:#e2e8f0;color:var(--ink2)}
.verdict p{margin:0;font-size:13.5px}

/* report sheet */
.sheet{border:1px solid var(--line);border-radius:8px;padding:26px 28px;background:#fff}
.sheet .rhead{display:flex;justify-content:space-between;gap:16px;border-bottom:2px solid var(--ink);padding-bottom:10px;margin-bottom:16px;flex-wrap:wrap}
.sheet .rhead .t{font-size:19px;font-weight:700;letter-spacing:-.01em}
.sheet .rhead .s{font-size:12.5px;color:var(--muted)}
.meta4{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:8px 18px;font-size:13px;margin-bottom:16px}
.meta4 div b{color:var(--muted);font-weight:500;margin-right:6px}
.two{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.two ul{margin:6px 0 0;padding-left:18px;font-size:13px;color:var(--ink2)}
.sig{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:26px;font-size:12.5px;color:var(--muted)}
.sig div{border-top:1px solid var(--ink);padding-top:6px}
.foot{padding:18px 0 40px;color:var(--muted);font-size:12.5px}
.foot a{color:var(--ink2)}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%) translateY(8px);background:var(--ink);color:#fff;padding:9px 14px;border-radius:8px;font-size:13px;opacity:0;pointer-events:none;transition:.2s;z-index:50}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* responsive */
@media (max-width:720px){
  .card{padding:18px 16px}
  h1,.hero h1{font-size:23px}
  .two{grid-template-columns:1fr}
  .steps{display:none}
}

/* print: only the report sheet goes on paper */
@media print{
  @page{margin:14mm}
  body{background:#fff;font-size:12px}
  .topbar,.steps,.actions,.hero,.foot,.noprint,.toast{display:none !important}
  main{padding:0}
  .card{border:0;box-shadow:none;padding:0;margin:0}
  #step-info,#step-walk,#step-score{display:none !important}
  .sheet{border:0;padding:0}
  tr.flagged td{background:#fef2f2 !important;-webkit-print-color-adjust:exact;print-color-adjust:exact}
  .verdict,.stat{-webkit-print-color-adjust:exact;print-color-adjust:exact}
  thead{display:table-header-group}
  tr{page-break-inside:avoid}
}