:root{
  --bg:#f7f6f2;
  --card:#fff;
  --text:#222;
  --muted:#777;
  --line:#dedbd3;
  --accent:#171717;
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Hiragino Sans","Yu Gothic UI",sans-serif;
  background:var(--bg);
  color:var(--text);
}
.topbar{
  height:68px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:0 28px;
  border-bottom:1px solid var(--line);
  background:rgba(247,246,242,.96);
  position:sticky;top:0;z-index:5;
}
.brand{font-size:25px;font-weight:750;letter-spacing:.04em}
.tagline{font-size:12px;color:var(--muted)}
.shell{width:min(900px,92vw);margin:0 auto;padding:52px 0 80px}
.hidden{display:none!important}
.hero{min-height:58vh;display:flex;flex-direction:column;justify-content:center}
h1{font-size:34px;margin:0 0 24px}
h2{font-size:18px;margin:0 0 16px}
textarea,input{
  width:100%;
  border:1px solid var(--line);
  background:var(--card);
  border-radius:14px;
  padding:16px;
  font-size:17px;
  outline:none;
}
textarea{min-height:190px;resize:vertical;line-height:1.65}
.small-textarea{min-height:110px}
.response-textarea{min-height:220px}
input{margin:8px 0 18px}
label{display:block;font-size:14px;margin-top:18px}
button{
  border:1px solid var(--line);
  background:var(--card);
  border-radius:999px;
  padding:11px 18px;
  cursor:pointer;
  font-size:14px;
}
button:hover{opacity:.85}
.primary{background:var(--accent);color:#fff;border-color:var(--accent);min-width:88px;font-weight:700}
.ghost{background:transparent}
.row{display:flex;gap:10px;align-items:center}
.end{justify-content:flex-end;margin-top:15px}
.hint,.muted{color:var(--muted);font-size:13px}
.hint{text-align:right;margin-top:10px}
.panel{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:18px;
  padding:24px;
  margin-top:18px;
}
.auth-panel{max-width:520px;margin:8vh auto}
.section-head{display:flex;align-items:center;justify-content:space-between}
.list{display:grid;gap:10px}
.item{
  border:1px solid var(--line);
  border-radius:14px;
  padding:16px;
  cursor:pointer;
}
.item:hover{background:#faf9f6}
.item-date{font-size:12px;color:var(--muted);margin-bottom:8px}
.item-text{white-space:pre-wrap;line-height:1.6}
.thought-box{
  background:#faf9f6;
  border:1px solid var(--line);
  border-radius:14px;
  padding:18px;
  white-space:pre-wrap;
  line-height:1.65;
  margin-bottom:26px;
}
.muted-box{color:#444}
.meta-box{
  display:inline-block;
  background:#f1efe9;
  border-radius:999px;
  padding:8px 14px;
  margin-bottom:22px;
  font-size:14px;
}
.decision-grid{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px}
.decision-grid button.selected{background:#222;color:#fff;border-color:#222}
.message{font-size:13px;margin-top:14px}
@media(max-width:640px){
  h1{font-size:28px}
  .shell{padding-top:32px}
  .topbar{padding:0 18px}
}

.chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  border:1px solid var(--line);
  background:#faf9f6;
  border-radius:999px;
  padding:9px 13px;
  font-size:14px;
  cursor:pointer;
  user-select:none;
}
.chip.selected{background:#222;color:#fff;border-color:#222}
.space-top{margin-top:28px}
.modal{
  position:fixed;
  inset:0;
  background:rgba(0,0,0,.25);
  display:flex;
  align-items:center;
  justify-content:center;
  z-index:20;
}
.modal-card{
  width:min(460px,90vw);
  background:#fff;
  border-radius:18px;
  padding:24px;
  box-shadow:0 20px 60px rgba(0,0,0,.18);
}
select{
  width:100%;
  border:1px solid var(--line);
  border-radius:14px;
  padding:14px;
  background:#fff;
  font-size:15px;
  margin:8px 0 10px;
}

.recommend-box{display:flex;justify-content:space-between;gap:18px;align-items:center;background:#f3f1eb;border:1px solid var(--line);border-radius:14px;padding:16px;margin-top:18px}
.recommend-label{font-size:12px;color:var(--muted);margin-bottom:5px}
.cost-box{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:16px;padding-top:16px;border-top:1px solid var(--line)}
@media(max-width:640px){.recommend-box{align-items:flex-start;flex-direction:column}}