/* Layout: a step rail on the left (top strip on phones), one form sheet in the middle, a quiet "why we ask" note under each question. Seal red marks the one thing to act on. */
:root{
  --paper:#f6f7f8; --sheet:#ffffff; --ink:#18212b; --muted:#5b6672; --line:#d9dee3; --soft:#eef1f4;
  --seal:#b3261e; --seal-soft:#fbe9e7; --ok:#1f7a4d; --ok-soft:#e5f3eb; --warn:#8a5a00; --warn-soft:#fdf3dc;
  /* System fonts only: Google Fonts is blocked in mainland China. */
  --display:Georgia,"Times New Roman","Songti SC","SimSun",serif;
  --body:system-ui,-apple-system,"Segoe UI",Roboto,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:ui-monospace,Menlo,Consolas,monospace;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --paper:#11161b; --sheet:#181f26; --ink:#e7ebef; --muted:#9aa5b1; --line:#2c3640; --soft:#1f2830;
  --seal:#f0857c; --seal-soft:#3a1d1b; --ok:#6cc79a; --ok-soft:#173026; --warn:#e8b65a; --warn-soft:#352a14; color-scheme:dark}}
:root[data-theme="dark"]{
  --paper:#11161b; --sheet:#181f26; --ink:#e7ebef; --muted:#9aa5b1; --line:#2c3640; --soft:#1f2830;
  --seal:#f0857c; --seal-soft:#3a1d1b; --ok:#6cc79a; --ok-soft:#173026; --warn:#e8b65a; --warn-soft:#352a14; color-scheme:dark}
body{background:var(--paper);color:var(--ink);font:15px/1.55 var(--body)}
*{box-sizing:border-box}
.wrap{max-width:1080px;margin:0 auto;padding-block:20px 60px;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
header.top{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:20px}
.brand{display:flex;align-items:center;gap:12px}
.chop{width:40px;height:40px;border:2px solid var(--seal);color:var(--seal);border-radius:6px;display:grid;place-items:center;font:600 13px/1 "Noto Sans SC",sans-serif;letter-spacing:1px;transform:rotate(-4deg)}
.brand h1{font:600 22px/1.2 var(--display);margin:0;text-wrap:balance}
.brand p{margin:0;color:var(--muted);font-size:13px}
.lang{display:flex;border:1px solid var(--line);border-radius:999px;overflow:hidden}
.lang button{border:0;background:transparent;color:var(--muted);padding:6px 14px;font:500 13px var(--body);cursor:pointer}
.lang button[aria-pressed="true"]{background:var(--ink);color:var(--sheet)}
.grid{display:grid;grid-template-columns:230px minmax(0,1fr);gap:28px;align-items:start}
nav.rail{position:sticky;top:calc(env(safe-area-inset-top,0px) + 16px)}
nav.rail ol{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
nav.rail button{width:100%;text-align:left;display:flex;gap:10px;align-items:center;border:0;background:transparent;color:var(--muted);padding:8px 10px;border-radius:8px;font:500 14px var(--body);cursor:pointer}
nav.rail button:hover{background:var(--soft)}
nav.rail button[aria-current="step"]{background:var(--sheet);color:var(--ink);box-shadow:0 0 0 1px var(--line)}
.dot{flex:none;width:22px;height:22px;border-radius:50%;border:1.5px solid var(--line);display:grid;place-items:center;font:500 11px var(--mono)}
.dot.done{background:var(--ok);border-color:var(--ok);color:var(--sheet)}
.dot.todo{border-color:var(--warn);color:var(--warn)}
.progress{margin-top:14px;font-size:12px;color:var(--muted)}
.bar{height:4px;background:var(--line);border-radius:4px;overflow:hidden;margin-top:6px}
.bar i{display:block;height:100%;background:var(--ok)}
main.sheet{background:var(--sheet);border:1px solid var(--line);border-radius:12px;padding:28px clamp(18px,4vw,40px) 32px;min-width:0}
.eyebrow{font:500 12px var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
h2{font:600 28px/1.2 var(--display);margin:4px 0 8px;text-wrap:balance}
.lead{color:var(--muted);max-width:62ch;margin:0 0 24px}
.q{display:flex;flex-direction:column;gap:6px;margin-bottom:22px;max-width:640px}
.q>label:not(.choice),.q>.lbl{font-weight:600}
.q .hint{color:var(--muted);font-size:13px}
input[type=text],input[type=email],input[type=tel],input[type=number],input[type=date],textarea,select{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:var(--sheet);color:var(--ink);font:15px var(--body)}
textarea{min-height:76px;resize:vertical}
input:focus-visible,textarea:focus-visible,select:focus-visible,button:focus-visible{outline:2px solid var(--seal);outline-offset:2px}
.row{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px}
.choices{display:grid;gap:10px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.choice{display:flex;gap:10px;align-items:flex-start;border:1px solid var(--line);border-radius:10px;padding:12px 14px;cursor:pointer;background:var(--sheet)}
.choice:has(input:checked){border-color:var(--ink);box-shadow:0 0 0 1px var(--ink)}
.choice input{margin-top:4px;accent-color:var(--seal)}
.choice b{display:block;font-weight:600}
.choice span{color:var(--muted);font-size:13px}
.tag{display:inline-block;font:500 11px var(--mono);padding:2px 7px;border-radius:999px;background:var(--soft);color:var(--muted);margin-left:6px;vertical-align:1px}
.tag.rec{background:var(--ok-soft);color:var(--ok)}
details.why{font-size:13px;color:var(--muted)}
details.why summary{cursor:pointer;color:var(--ink);font-weight:500;width:max-content;max-width:100%}
details.why p{margin:6px 0 0;max-width:62ch}
.note{border-radius:10px;padding:12px 14px;font-size:14px;max-width:640px;margin-bottom:20px}
.note.info{background:var(--soft)}
.note.warn{background:var(--warn-soft);color:var(--warn)}
.note.ok{background:var(--ok-soft);color:var(--ok)}
.suggest{font-size:13px;color:var(--ok)}
.suggest.bad{color:var(--seal)}
.person{border:1px solid var(--line);border-radius:12px;padding:18px;margin-bottom:16px;max-width:720px}
.person-head{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:12px}
.person-head h3{margin:0;font:600 19px var(--display)}
.roles{display:flex;gap:8px;flex-wrap:wrap}
.pill{display:inline-flex;gap:6px;align-items:center;border:1px solid var(--line);border-radius:999px;padding:5px 12px;cursor:pointer;font-size:14px}
.pill:has(input:checked){background:var(--ink);color:var(--sheet);border-color:var(--ink)}
.pill input{position:absolute;opacity:0;pointer-events:none}
.sub{border-top:1px dashed var(--line);margin-top:14px;padding-top:14px}
.sub h4{margin:0 0 10px;font:600 13px var(--mono);letter-spacing:.05em;text-transform:uppercase;color:var(--muted)}
.upload{display:flex;align-items:center;gap:10px;flex-wrap:wrap;border:1px dashed var(--line);border-radius:8px;padding:10px 12px}
.upload .fn{font:13px var(--mono);color:var(--ok);overflow-wrap:anywhere}
.btn{border:1px solid var(--line);background:var(--sheet);color:var(--ink);padding:9px 16px;border-radius:8px;font:500 14px var(--body);cursor:pointer}
.btn:hover{background:var(--soft)}
.btn.primary{background:var(--seal);border-color:var(--seal);color:#fff}
:root[data-theme="dark"] .btn.primary{color:#1a0e0d}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .btn.primary{color:#1a0e0d}}
.btn.link{border:0;background:none;color:var(--seal);padding:0;text-decoration:underline}
.nav{display:flex;justify-content:space-between;gap:12px;margin-top:28px;padding-top:20px;border-top:1px solid var(--line);flex-wrap:wrap}
.cap{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;margin:0 0 24px;max-width:720px}
.cap div{background:var(--soft);border-radius:10px;padding:12px}
.cap b{display:block;font:600 20px var(--display)}
.cap span{font-size:13px;color:var(--muted)}
ul.need{margin:0 0 24px;padding-left:20px;max-width:640px}
ul.need li{margin-bottom:4px}
table.sum{border-collapse:collapse;width:100%;font-size:14px}
.tablewrap{overflow-x:auto;margin-bottom:20px}
table.sum th,table.sum td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--line);vertical-align:top}
table.sum th{font:500 12px var(--mono);text-transform:uppercase;letter-spacing:.05em;color:var(--muted);width:34%}
.issues{list-style:none;padding:0;margin:0 0 24px;display:flex;flex-direction:column;gap:6px;max-width:720px}
.issues li{display:flex;justify-content:space-between;gap:12px;align-items:center;background:var(--warn-soft);color:var(--warn);border-radius:8px;padding:8px 12px;font-size:14px}
.num{font-variant-numeric:tabular-nums;font-family:var(--mono)}
pre.json{background:var(--soft);border-radius:8px;padding:12px;font:12px/1.5 var(--mono);max-height:340px;overflow:auto;white-space:pre}
.saved{font-size:12px;color:var(--muted)}
.done-card{text-align:left;max-width:620px}
@media (max-width:760px){
  .grid{grid-template-columns:minmax(0,1fr)}
  nav.rail{position:static}
  nav.rail ol{flex-direction:row;overflow-x:auto;gap:4px;padding-bottom:4px}
  nav.rail button{width:auto;white-space:nowrap}
  nav.rail .lbltxt{display:none}
  nav.rail button[aria-current="step"] .lbltxt{display:inline}
  h2{font-size:24px}
}
@media (prefers-reduced-motion:no-preference){main.sheet{animation:in .2s ease-out}}
@keyframes in{from{transform:translateY(4px)}to{transform:none}}
.hint{color:var(--muted);font-size:13px}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.statusbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.grid:has(#railNav[hidden]){grid-template-columns:minmax(0,1fr)}
/* admin */
.admin h2{font-size:24px}
.admin table.sum th{width:auto}
.admin .actions{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin:16px 0}
.admin form.inline{display:inline-flex;gap:8px;align-items:center;flex-wrap:wrap}
.admin form.inline input[type=text]{width:auto;min-width:200px}
.status{display:inline-block;font:500 11px var(--mono);padding:2px 8px;border-radius:999px;text-transform:uppercase;letter-spacing:.05em}
.status.open{background:var(--soft);color:var(--muted)}
.status.submitted{background:var(--warn-soft);color:var(--warn)}
.status.filed,.status.closed{background:var(--ok-soft);color:var(--ok)}
.linkbox{background:var(--ok-soft);color:var(--ok);border-radius:10px;padding:12px 14px;margin-bottom:16px;overflow-wrap:anywhere}
.linkbox code{font:13px var(--mono);color:var(--ink)}
.danger{border-color:var(--seal);color:var(--seal)}
a{color:var(--seal)}