:root{
  --ink:#1a1a19;
  --ink2:#5f5e5a;
  --ink3:#8a8880;
  --line:#e2e0d9;
  --line2:#cfcdc4;
  --bg:#ffffff;
  --bg2:#f8f7f4;
  --bg3:#f1efe8;
  --accent:#185FA5;
  --accent-bg:#e8f1fa;
  --danger:#a32d2d;
  --danger-bg:#fcebeb;
  --ok:#0f6e56;
  --r-md:8px;
  --r-lg:12px;
  --shadow:0 1px 2px rgba(0,0,0,.04);
  --safe-b:env(safe-area-inset-bottom, 0px);
}

*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{-webkit-text-size-adjust:100%}

body{
  margin:0;
  padding:0 0 calc(76px + var(--safe-b));
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:15px;
  line-height:1.65;
  color:var(--ink);
  background:var(--bg2);
  -webkit-font-smoothing:antialiased;
}

/* ============ 顶栏 ============ */
.topbar{
  position:sticky;
  top:0;
  z-index:20;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(180%) blur(8px);
  border-bottom:1px solid var(--line);
}
.tb-inner{
  max-width:760px;
  margin:0 auto;
  padding:12px 16px 10px;
}
.tb-title h1{
  margin:0;
  font-size:17px;
  font-weight:600;
  letter-spacing:-.01em;
}
.tb-title p{
  margin:2px 0 10px;
  font-size:11.5px;
  color:var(--ink3);
}
.prog-meta{
  display:flex;
  justify-content:space-between;
  align-items:baseline;
  font-size:11.5px;
  color:var(--ink2);
  margin-bottom:5px;
}
.save-state{
  font-size:11px;
  color:var(--ok);
  opacity:0;
  transition:opacity .3s;
}
.save-state.on{opacity:1}
.prog-bar{
  height:4px;
  background:var(--bg3);
  border-radius:99px;
  overflow:hidden;
}
.prog-bar i{
  display:block;
  height:100%;
  width:0;
  background:var(--accent);
  border-radius:99px;
  transition:width .3s ease;
}

/* ============ 主容器 ============ */
main{
  max-width:760px;
  margin:0 auto;
  padding:16px 16px 8px;
}

.card{
  background:var(--bg);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow);
}

.intro{padding:12px 14px;margin-bottom:16px}
.intro p{margin:0 0 8px;font-size:13.5px;color:var(--ink2);line-height:1.7}
.intro p:last-child{margin-bottom:0}
.intro-note{
  font-size:12.5px!important;
  color:var(--accent)!important;
  background:var(--accent-bg);
  padding:8px 10px;
  border-radius:var(--r-md);
}

.sec-title{
  margin:0;
  font-size:15.5px;
  font-weight:600;
  letter-spacing:-.01em;
  display:flex;
  align-items:center;
  gap:7px;
}
.sec-no{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:24px;
  height:20px;
  padding:0 6px;
  border-radius:5px;
  background:var(--ink);
  color:#fff;
  font-size:11px;
  font-weight:600;
  letter-spacing:.02em;
  flex:0 0 auto;
}

.block{margin-bottom:20px}
.block-head{margin-bottom:10px}
.block-sub{
  margin:4px 0 0;
  font-size:12.5px;
  color:var(--ink3);
  line-height:1.6;
}

/* ============ 折叠模块 ============ */
details{
  background:var(--bg);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow);
  overflow:hidden;
}
summary{
  display:flex;
  align-items:center;
  gap:10px;
  padding:14px 16px;
  cursor:pointer;
  list-style:none;
  min-height:52px;
  user-select:none;
}
summary::-webkit-details-marker{display:none}
summary .sec-title{flex:1;min-width:0}
summary::after{
  content:"";
  width:8px;height:8px;
  border-right:2px solid var(--ink3);
  border-bottom:2px solid var(--ink3);
  transform:rotate(45deg);
  transition:transform .2s;
  flex:0 0 auto;
  margin-left:2px;
  margin-top:-4px;
}
details[open] summary::after{transform:rotate(-135deg);margin-top:2px}
.count{
  font-size:12px;
  color:var(--ink3);
  font-variant-numeric:tabular-nums;
  flex:0 0 auto;
}

/* ============ 核心五问卡片 ============ */
.qcard{
  background:var(--bg);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow);
  padding:14px 16px 16px;
  margin-bottom:12px;
}
.qcard-head{
  display:flex;
  gap:11px;
  align-items:flex-start;
  margin-bottom:10px;
}
.qno{
  flex:0 0 auto;
  width:24px;height:24px;
  border-radius:50%;
  background:var(--ink);
  color:#fff;
  font-size:12.5px;
  font-weight:600;
  display:flex;align-items:center;justify-content:center;
  margin-top:1px;
}
.qcard-t h3{
  margin:0;
  font-size:15px;
  font-weight:600;
}
.tag{
  margin:2px 0 0;
  font-size:11.5px;
  color:var(--accent);
  background:var(--accent-bg);
  display:inline-block;
  padding:1px 7px;
  border-radius:4px;
}
.ask,.hint{
  margin:0 0 8px;
  font-size:13.5px;
  line-height:1.7;
  color:var(--ink2);
}
.ask b,.hint b{color:var(--ink);font-weight:600}
.hint{
  color:var(--ok);
  background:#f2f9f6;
  padding:8px 10px;
  border-radius:var(--r-md);
  border-left:3px solid var(--ok);
  font-size:12.5px;
}

/* ============ 输入 ============ */
textarea.rec,
.num input{
  width:100%;
  font-family:inherit;
  font-size:14px;
  line-height:1.6;
  color:var(--ink);
  background:var(--bg2);
  border:1px solid var(--line2);
  border-radius:var(--r-md);
  padding:10px 12px;
  outline:none;
  transition:border-color .15s, background .15s;
}
textarea.rec{
  resize:vertical;
  min-height:64px;
  display:block;
}
textarea.rec:focus,
.num input:focus{
  border-color:var(--accent);
  background:#fff;
  box-shadow:0 0 0 3px rgba(24,95,165,.1);
}
textarea.rec::placeholder,
.num input::placeholder{
  color:#b0aeA6;
  font-size:13px;
}
textarea.memo{min-height:96px}

/* ============ 勾选清单 ============ */
.chk-list{padding:2px 8px 10px}
.chk{
  display:flex;
  align-items:flex-start;
  gap:10px;
  padding:11px 8px;
  border-radius:var(--r-md);
  cursor:pointer;
  min-height:46px;
  transition:background .15s;
}
.chk:active{background:var(--bg3)}
.chk input{
  appearance:none;
  -webkit-appearance:none;
  flex:0 0 auto;
  width:21px;height:21px;
  margin:1px 0 0;
  border:1.5px solid var(--line2);
  border-radius:5px;
  background:#fff;
  cursor:pointer;
  position:relative;
  transition:background .15s, border-color .15s;
}
.chk input:checked{
  background:var(--accent);
  border-color:var(--accent);
}
.chk input:checked::after{
  content:"";
  position:absolute;
  left:6px;top:2px;
  width:6px;height:11px;
  border:solid #fff;
  border-width:0 2px 2px 0;
  transform:rotate(45deg);
}
.chk span{
  font-size:14px;
  line-height:1.6;
  color:var(--ink);
}
.chk input:checked + span{
  color:var(--ink3);
  text-decoration:line-through;
  text-decoration-color:var(--line2);
}

/* ============ 五个数 ============ */
.num-list{
  background:var(--bg);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow);
  padding:6px 16px 14px;
}
.num{display:block;padding:10px 0;border-bottom:1px dashed var(--line)}
.num:last-child{border-bottom:none}
.num > span{
  display:block;
  font-size:13.5px;
  font-weight:500;
  margin-bottom:6px;
}

/* ============ 底部操作栏 ============ */
.actionbar{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:30;
  display:grid;
  grid-template-columns:1.35fr 1fr 1fr .9fr;
  gap:8px;
  padding:10px 12px calc(10px + var(--safe-b));
  background:rgba(255,255,255,.97);
  backdrop-filter:saturate(180%) blur(8px);
  border-top:1px solid var(--line);
}
.btn{
  appearance:none;
  font-family:inherit;
  font-size:12.5px;
  font-weight:500;
  color:var(--ink);
  background:var(--bg);
  border:1px solid var(--line2);
  border-radius:var(--r-md);
  padding:0 6px;
  height:44px;
  cursor:pointer;
  transition:background .15s, transform .1s;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.btn:active{transform:scale(.97)}
.btn.primary{
  background:var(--accent);
  border-color:var(--accent);
  color:#fff;
}
.btn.danger{
  color:var(--danger);
  border-color:#e8c4c4;
  background:var(--danger-bg);
}

/* ============ 提示条 ============ */
.toast{
  position:fixed;
  left:50%;
  bottom:calc(88px + var(--safe-b));
  transform:translate(-50%,10px);
  z-index:40;
  max-width:calc(100% - 40px);
  padding:10px 16px;
  border-radius:99px;
  background:rgba(26,26,25,.92);
  color:#fff;
  font-size:13px;
  line-height:1.4;
  text-align:center;
  opacity:0;
  pointer-events:none;
  transition:opacity .25s, transform .25s;
}
.toast.on{opacity:1;transform:translate(-50%,0)}

/* ============ 平板与桌面 ============ */
@media (min-width:600px){
  body{font-size:15.5px}
  .tb-inner{padding:16px 20px 12px}
  .tb-title h1{font-size:19px}
  main{padding:20px 20px 8px}
  .qcard{padding:18px 20px 20px}
  .actionbar{
    grid-template-columns:repeat(4,auto);
    justify-content:center;
    gap:10px;
    padding:12px 20px calc(12px + var(--safe-b));
  }
  .btn{padding:0 22px;font-size:13.5px}
  .chk:hover{background:var(--bg2)}
}

@media (min-width:900px){
  .intro-note{font-size:12.5px}
}

/* ============ 打印 ============ */
@media print{
  @page{size:A4;margin:14mm}
  body{background:#fff;padding:0;font-size:10.5pt}
  .topbar{position:static;background:#fff;border-bottom:1px solid #ccc}
  .prog,.actionbar,.toast{display:none!important}
  main{padding:0;max-width:100%}
  .card,.qcard,details,.num-list{box-shadow:none;border:1px solid #ccc;break-inside:avoid}
  details{display:block}
  textarea.rec,.num input{
    border:1px solid #ccc;
    background:#fff;
    min-height:auto;
    height:auto;
    overflow:visible;
    -webkit-print-color-adjust:exact;
    print-color-adjust:exact;
  }
  .chk input:checked{
    background:#333!important;
    border-color:#333!important;
    -webkit-print-color-adjust:exact;
    print-color-adjust:exact;
  }
}