:root{
  --bg:#f4f6fb;
  --card:#ffffff;
  --text:#2b2f36;
  --muted:#6b7280;
  --border:#e6e9ef;
  --control-border:#dbeafe;
  --primary:#246fe0;
  --primary-600:#1e5fcc;
  --accent:#22c55e;
  --danger:#e53e3e;
  --radius:8px;
  --gap:16px;
  --label-width:140px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);
  color:var(--text);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  padding:9px;
}

/* container */
.container{
  width:100%;
  max-width:560px;
  margin:0px auto;
  padding:6px;
  border:1px solid transparent;
  border-radius:12px;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.42), rgba(255,255,255,0.28)) padding-box,
    linear-gradient(135deg, rgba(36,111,224,0.2), var(--control-border), rgba(36,111,224,0.08)) border-box;
}

/* page title */
h1{
  margin:0 0 8px;
  font-size:20px;
  color:var(--text);
  font-weight:600;
  text-align:center;
}
.page-subtitle{
  margin:0 0 4px;
  color:#77829a;
  font-size:13px;
}

/* card */
.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:0 6px 18px rgba(32,40,55,0.06);
  overflow:hidden;
}
#section_basic,
#section_basic .card-body,
#section_basic .row,
#section_basic .control{
  overflow:visible;
}
.card + .card{margin-top:6px}
.card-title{
  margin:0;
  padding:6px 9px;
  font-size:15px;
  border-bottom:1px solid var(--border);
  background:linear-gradient(180deg, rgba(255,255,255,0.65), rgba(255,255,255,0.4));
  color:var(--text);
  font-weight:600;
}
.card-body{
  padding:9px;
}

/* -------- GRID ROW: 支持两列（label+control）在桌面，移动端堆叠 -------- */
.row{
  display:grid;
  grid-template-columns: var(--label-width) 1fr var(--label-width) 1fr;
  column-gap:6px;
  row-gap:8px;
  align-items:start;
  position:relative;
  padding-bottom:2px;
  margin-bottom:8px;
}
.row::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  border-bottom:1px solid #eceff3;
}

/* label/control pair */
.label{
  color:#000;
  padding-top:8px;
  font-size:14px;
}
.control{
  min-width:0;
}

/* 当某个 row 只有一组 label/control，保持对齐（可以在 HTML 给单组添加 class .single） */
.row.single{
  grid-template-columns: var(--label-width) 1fr;
}
.row.action-row{
  grid-template-columns: 1fr;
}

/* inputs */
input[type="text"], input[type="tel"], input[type="number"], textarea, select{
  width:100%;
  padding:5px 8px;
  border-radius:6px;
  border:1px solid var(--control-border);
  font-size:14px;
  line-height:20px;
  color:var(--text);
  background:#fff;
  box-sizing:border-box;
  outline:none;
  transition:box-shadow .12s ease, border-color .12s ease, transform .02s;
}
input[type="text"], input[type="tel"], input[type="number"], select{height:32px}
input::placeholder, textarea::placeholder{color:#bfc6d8}
textarea{min-height:80px;resize:vertical}

/* focus */
input:focus, textarea:focus, select:focus{
  border-color:var(--primary);
  box-shadow:0 6px 18px rgba(36,111,224,0.08);
}

/* buttons */
.buttons{display:flex;gap:6px;margin-top:2px}
button{
  cursor:pointer;
  border:0;
  border-radius:6px;
  padding:5px 7px;
  font-size:15px;
  color:#fff;
  background:linear-gradient(180deg,var(--primary),var(--primary-600));
  box-shadow:0 6px 14px rgba(36,111,224,0.12);
  transition:transform .06s ease, box-shadow .06s;
}
button:active{transform:translateY(1px);box-shadow:0 4px 10px rgba(36,111,224,0.12)}
button.secondary{
  background:#f3f5fa;
  color:var(--text);
  box-shadow:none;
  border:1px solid var(--border);
}
#btn_submit{
  font-size:22.5px;
  height:42px;
}

/* small text / badges */
.small{font-size:13px;color:var(--muted)}
.hint{font-size:13px;color:#8b95a6;margin-top:8px}

/* attachments */
.attachments{
  border-radius:8px;
  background:linear-gradient(180deg,#fbfdff,#ffffff);
  border:1px dashed var(--border);
  padding:5px;
}
.upload-toolbar{
  display:flex;
  gap:8px;
  align-items:center;
}
.city-cascader{position:relative;z-index:120}
.city-cascader-open::before{
  content:"";
  position:fixed;
  inset:0;
  background:rgba(17,24,39,0.28);
  z-index:10000;
}
.city-cascader-open #city_cascader{z-index:10002}
.city-cascader-trigger{
  width:100%;
  display:flex;
  justify-content:space-between;
  align-items:center;
  background:#fff;
  color:var(--text);
  border:1px solid var(--control-border);
  box-shadow:none;
  padding:5px 6px;
  font-size:14px;
}
.city-cascader-trigger:hover{border-color:#d8dfea}
.city-cascader-arrow{color:#9aa3b2;font-size:12px}
.city-cascader-panel{
  position:fixed;
  left:50%;
  top:50%;
  transform:translate(-50%, -50%);
  width:min(760px, 92vw);
  min-height:220px;
  max-height:76vh;
  background:#fff;
  border:1px solid var(--border);
  border-radius:8px;
  box-shadow:0 10px 24px rgba(32,40,55,0.12);
  display:grid;
  grid-template-columns: 1fr 1fr;
  z-index:10003;
  overflow:hidden;
}
.city-cascader-col{display:flex;flex-direction:column;min-height:220px;max-height:76vh}
.city-cascader-col + .city-cascader-col{border-left:1px solid var(--border)}
.city-cascader-col-title{padding:5px 6px;font-size:12px;color:#8b95a6;border-bottom:1px solid var(--border)}
.city-cascader-list{max-height:calc(76vh - 32px);overflow:auto}
.city-item{
  padding:5px 6px;
  font-size:14px;
  cursor:pointer;
  color:var(--text);
  border-bottom:1px solid #f3f5fa;
}
.city-item:hover{background:#f7faff}
.city-item.active{background:#eef5ff;color:#1e5fcc;font-weight:600}
#attachments_list{display:flex;flex-direction:column;gap:8px}
.file-item{
  display:flex;
  align-items:center;
  gap:12px;
  padding:8px;
  border-radius:6px;
  background:linear-gradient(180deg,#ffffff,#fbfdff);
  border:1px solid rgba(230,233,240,0.6);
}
.file-meta{display:flex;flex-direction:column;gap:4px;flex:1}
.file-meta .name{font-weight:600;color:var(--text);font-size:14px}
.file-meta .meta{font-size:12px;color:var(--muted)}
.file-actions{display:flex;gap:8px;align-items:center}

/* progress */
.progress{height:8px;background:#f1f6ff;border-radius:999px;overflow:hidden;width:160px}
.progress i{display:block;height:100%;background:linear-gradient(90deg,var(--primary),#6aa8ff);width:0%}

/* badges and required */
.required{color:var(--danger);margin-left:6px;font-weight:700}
.badge{display:inline-block;background:#f1faf6;color:var(--accent);padding:4px 8px;border-radius:6px;font-size:13px;border:1px solid rgba(34,197,94,0.12)}

/* make file input accessible when JS disabled: hide visually but keep focusable */
.hidden{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden;}

/* 全局采用移动端样式（PC 也一致） */
h1{display:none}
.container{padding:6px}
.row{
  grid-template-columns: repeat(2, minmax(0, 1fr));
  grid-template-rows:auto auto;
  grid-template-areas:
    "l1 l2"
    "c1 c2";
  column-gap:8px;
  row-gap:4px;
  padding-bottom:0;
}
.row:not(.single):not(.action-row) > :nth-child(1){grid-area:l1;}
.row:not(.single):not(.action-row) > :nth-child(2){grid-area:c1;}
.row:not(.single):not(.action-row) > :nth-child(3){grid-area:l2;}
.row:not(.single):not(.action-row) > :nth-child(4){grid-area:c2;}
.row.single,
.row.action-row{
  grid-template-columns:1fr;
  grid-template-rows:auto;
  grid-template-areas:none;
}
.row::after{display:none}
.label{width:100%;margin-bottom:6px;color:#000;padding-top:0}
.control{
  width:100%;
  padding-bottom:0;
  margin-bottom:0;
  border-bottom:none;
}
.row.action-row .control{
  margin-bottom:0;
  padding-bottom:0;
  border-bottom:none;
}
.buttons{flex-direction:column}
button{width:100%}
.file-item{flex-direction:column;align-items:flex-start}
.progress{width:100%}
.upload-toolbar{flex-direction:column;align-items:flex-start}
.city-cascader-panel{grid-template-columns:1fr 1fr;width:min(760px,92vw);min-height:220px;max-height:76vh}
.city-cascader-col{min-height:220px;max-height:76vh}
.city-cascader-col + .city-cascader-col{border-left:1px solid var(--border);border-top:0}

/* 当容器达到 max-width(560px) 时视为 PC，显示主标题 */
@media (min-width: 578px){
  h1{display:block}
}

/* tiny screens */
@media (max-width:420px){
  body{padding:10px}
  .container{margin:0px auto;padding:6px}
  h1{font-size:18px}
  .card-title{font-size:14px;padding:6px}
  input,textarea,select{font-size:15px;padding:6px}
  .label{font-size:14px}
}

/* accessibility */
input, textarea, select, button { -webkit-tap-highlight-color: rgba(0,0,0,0.06); }