:root{
  --bg:#F3F7FE; --card:#fff; --ink:#16233A; --muted:#5B6B84;
  --blue:#2F6BFF; --blue-d:#1E56D6; --line:#DCE7F7; --soft:#EFF5FF;
  --ok:#2E7D5B; --warn:#C97A1E; --err:#C0392B; --radius:16px;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{overflow-x:hidden;margin:0;padding:0}
body{
  background:var(--bg); color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  font-size:15px; line-height:1.55;
  background-image:radial-gradient(circle at 50% 0%,#FFFFFF 0%,var(--bg) 55%);
  min-height:100vh;
}
a{color:var(--blue);text-decoration:none}
.wrap{max-width:480px;margin:0 auto;padding:22px 16px 40px}
.wrap.wide{max-width:960px}
h1{font-size:22px;margin:0 0 6px;letter-spacing:.5px}
h2{font-size:18px;margin:0 0 10px}
p.sub{color:var(--muted);font-size:13px;margin:0 0 16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 16px;box-shadow:0 6px 24px rgba(40,80,160,.06);margin-bottom:16px}
.card.flat{box-shadow:none}
label{display:block;font-size:12.5px;color:var(--muted);margin:0 0 6px}
.req{color:var(--blue)}
input,select,textarea{
  width:100%;font-size:16px;font-family:inherit;color:var(--ink);
  background:var(--soft);border:1.5px solid var(--line);border-radius:12px;
  padding:12px 14px;outline:none;transition:border-color .15s,background .15s;
  -webkit-appearance:none;appearance:none;min-width:0;max-width:100%;
}
select{background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%235B6B84' stroke-width='2.5'><path d='M6 9l6 6 6-6'/></svg>");
  background-repeat:no-repeat;background-position:right 14px center;padding-right:38px}
input:focus,select:focus,textarea:focus{border-color:var(--blue);background:#fff}
input::placeholder,textarea::placeholder{color:#9FB0C9}
textarea{resize:vertical;min-height:64px}
.field{margin-bottom:14px}
.row{display:flex;gap:10px}
.row .field{flex:1;min-width:0}
.hint{font-size:12px;color:#7E8DA5;margin:6px 0 0}
.err{color:var(--err);font-size:12.5px;margin-top:5px;display:none}
.field.bad input,.field.bad select,.field.bad textarea{border-color:var(--err);background:#FFF6F5}
.field.bad .err{display:block}
.btn{
  display:block;width:100%;border:0;border-radius:13px;padding:14px;
  font-size:16px;font-weight:600;font-family:inherit;letter-spacing:.5px;
  background:linear-gradient(180deg,#5B8CFF,var(--blue));color:#fff;
  box-shadow:0 8px 18px rgba(47,107,255,.25);cursor:pointer;transition:transform .08s;
}
.btn:active{transform:translateY(1px)}
.btn[disabled]{opacity:.6}
.btn.ghost{background:#fff;color:var(--blue);border:1.5px solid var(--blue);box-shadow:none}
.btn.dark{background:var(--ink);box-shadow:none}
.tag{display:inline-block;padding:2px 9px;border-radius:999px;font-size:12px}
.tag.pending{background:#FCEEDF;color:#B5651F}
.tag.claimed{background:#E8F0FF;color:var(--blue-d)}
.tag.done{background:#E7F3EC;color:var(--ok)}
.tag.canceled{background:#F1EFEC;color:#7A7168}
.muted{color:var(--muted)}
.small{font-size:12.5px}
.center{text-align:center}
.toast{position:fixed;left:50%;bottom:26px;transform:translateX(-50%) translateY(16px);
  background:rgba(20,30,50,.92);color:#fff;padding:10px 18px;border-radius:10px;font-size:13.5px;
  opacity:0;pointer-events:none;transition:all .25s;z-index:60;max-width:86vw;text-align:center}
.toast.on{opacity:1;transform:translateX(-50%) translateY(0)}
.topbar{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.topbar .back{font-size:13px;color:var(--muted)}
.brand{display:inline-flex;align-items:center;gap:6px;background:var(--blue);color:#fff;
  padding:5px 13px;border-radius:999px;font-size:13px;font-weight:600}
hr{border:0;border-top:1px solid var(--line);margin:16px 0}

/* 隐藏的单选框不能撑宽页面 */
.seg{display:flex;gap:8px}
.seg label{position:relative;flex:1;margin:0}
.seg input{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none;margin:0;padding:0;border:0}
img,video{max-width:100%;height:auto}