:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --ink: #1c1f24;
  --muted: #6b7280;
  --line: #e3e6ea;
  --accent: #2f6feb;
  --accent-ink: #ffffff;
  --ok: #12805c;
  --ok-bg: #e8f6f0;
  --warn: #8a5a00;
  --warn-bg: #fff6e0;
  --err: #b3261e;
  --err-bg: #fdeceb;
  --radius: 10px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.6 system-ui, -apple-system, "Segoe UI", "Microsoft YaHei", sans-serif;
  padding-bottom: 2rem;
}
a { color: var(--accent); }
code {
  font-family: ui-monospace, Consolas, "Cascadia Mono", monospace;
  background: #eef1f5;
  padding: 1px 5px;
  border-radius: 5px;
  font-size: .92em;
  word-break: break-all;
}
h2 { font-size: 1.12rem; margin: 0 0 .6rem; }
h3 { font-size: 1rem; margin: 1.2rem 0 .5rem; }
h4 { font-size: .95rem; margin: 1rem 0 .35rem; }

.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  background: #fff; border-bottom: 1px solid var(--line);
  padding: .7rem max(1rem, calc((100vw - 62rem) / 2));
  position: sticky; top: 0; z-index: 10;
}
.topbar .brand { font-weight: 700; text-decoration: none; color: var(--ink); }
.topbar nav { display: flex; gap: .4rem; align-items: center; flex-wrap: wrap; }
.topbar nav a {
  text-decoration: none; color: var(--muted); padding: .35rem .6rem; border-radius: 8px; font-size: .93rem;
}
.topbar nav a:hover { background: #f0f2f5; color: var(--ink); }
.topbar nav a.on { background: #eaf0fe; color: var(--accent); font-weight: 600; }

main { max-width: 62rem; margin: 1.2rem auto; padding: 0 1rem; display: flex; flex-direction: column; gap: 1rem; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.1rem 1.2rem; }
.card.narrow { max-width: 34rem; }
.card.privacy { background: #f0f5ff; border-color: #d3e0fb; }
.card.notice { background: var(--warn-bg); border-color: #f0dca6; }
.card.ok { background: var(--ok-bg); border-color: #bfe3d4; }
.card.errorpage { background: var(--err-bg); border-color: #f3c9c6; }
.lead { margin-top: 0; }
.hint { color: var(--muted); font-size: .86rem; }
.mono { font-family: ui-monospace, Consolas, monospace; font-size: .88rem; }
.body { white-space: pre-wrap; }
.bigid { font-size: 1.8rem; font-weight: 800; letter-spacing: .04em; font-family: ui-monospace, Consolas, monospace; }

.filelist { list-style: none; margin: .3rem 0 .6rem; padding: 0; }
.filelist li { padding: .45rem .1rem; border-bottom: 1px dashed var(--line); display: flex; flex-wrap: wrap; gap: .5rem; align-items: baseline; }
.filelist li:last-child { border-bottom: 0; }
.filelist li span { color: var(--muted); font-size: .88rem; }
.filesgroup .hint { margin: .1rem 0 .2rem; }
.rec { margin: .6rem 0; }
.rec summary { cursor: pointer; color: var(--accent); font-size: .92rem; }
.fallback { margin-top: .7rem; padding: .7rem .8rem; background: #f3f5f8; border-radius: 8px; font-size: .92rem; }
.fallback.warn { background: var(--warn-bg); }
.steps li { margin: .3rem 0; }

.field { display: block; margin: .9rem 0; }
.field .label { display: block; font-weight: 600; font-size: .93rem; margin-bottom: .3rem; }
.field .hint { display: block; margin-top: .25rem; }
.req { color: var(--err); font-size: .8rem; margin-left: .3rem; }
input[type="text"], input[type="password"], input[type="number"], input[type="file"], textarea, select {
  width: 100%; padding: .55rem .65rem; border: 1px solid #cfd5dd; border-radius: 8px;
  font: inherit; background: #fff; color: var(--ink);
}
textarea { resize: vertical; }
input:focus, textarea:focus, select:focus { outline: 2px solid #bcd0fb; border-color: var(--accent); }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: .8rem; }
@media (max-width: 620px) { .row { grid-template-columns: 1fr; } }
.check { display: flex; gap: .5rem; align-items: center; margin: .8rem 0; }
.check input { width: auto; }

.actions { display: flex; gap: .8rem; align-items: center; margin-top: 1rem; flex-wrap: wrap; }
button, .btn, a.primary {
  font: inherit; border-radius: 8px; border: 1px solid #cfd5dd; background: #fff;
  padding: .5rem .85rem; cursor: pointer; text-decoration: none; color: var(--ink);
}
a.primary, button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 600; }
a.primary { display: inline-block; padding: .55rem 1rem; }
button.primary:disabled { opacity: .6; cursor: not-allowed; }
.linklike { background: none; border: 0; color: var(--accent); padding: 0; cursor: pointer; text-decoration: underline; font: inherit; }
.linklike.danger { color: var(--err); }
form.inline { display: inline; }

.drop {
  border: 2px dashed #c3ccd8; border-radius: var(--radius); padding: 1.2rem; text-align: center;
  background: #fbfcfd; margin-top: .6rem;
}
.drop.over { border-color: var(--accent); background: #eef3fe; }
.picked { list-style: none; margin: .6rem 0 0; padding: 0; }
.picked li { display: flex; justify-content: space-between; gap: .6rem; padding: .35rem .5rem; border-bottom: 1px solid var(--line); font-size: .9rem; }
.picked li .sz { color: var(--muted); white-space: nowrap; }
.picked li.bad { color: var(--err); }

.error { background: var(--err-bg); border: 1px solid #f3c9c6; color: #7a1a15; padding: .6rem .7rem; border-radius: 8px; margin-bottom: .7rem; }
.summary { margin: .5rem 0; padding-left: 1.1rem; }
.summary li { margin: .2rem 0; }

.foot { max-width: 62rem; margin: 1.5rem auto 0; padding: 0 1rem; color: var(--muted); font-size: .84rem; }

/* ---- 后台 ---- */
body.admin { background: #f2f3f6; }
table.subs { width: 100%; border-collapse: collapse; font-size: .88rem; }
table.subs th, table.subs td { text-align: left; padding: .5rem .5rem; border-bottom: 1px solid var(--line); vertical-align: top; }
table.subs th { background: #f7f8fa; font-size: .82rem; color: var(--muted); }
table.subs tr:hover td { background: #fafbfd; }
.ops { min-width: 16rem; display: flex; flex-direction: column; gap: .35rem; }
.ops form.inline { display: flex; gap: .3rem; flex-wrap: wrap; align-items: center; }
.ops select, .ops input[type="text"] { width: auto; padding: .25rem .4rem; font-size: .85rem; }
.mini-files { list-style: none; margin: 0; padding: 0; }
.mini-files li { display: flex; gap: .4rem; justify-content: space-between; }
.fmeta { color: var(--muted); font-size: .82rem; white-space: nowrap; }
.tag { display: inline-block; background: #eaf0fe; color: var(--accent); border-radius: 6px; padding: 0 .4rem; font-size: .8rem; margin-top: .2rem; }
.tag.ok { background: var(--ok-bg); color: var(--ok); }
.note { color: var(--muted); font-size: .84rem; }
.disk { margin: .4rem 0 .8rem; font-size: .9rem; }
.disk.warn { color: var(--warn); }
.danger { color: var(--err); }
.bulk { margin-top: .6rem; }
.rowform { display: flex; flex-wrap: wrap; gap: .4rem; align-items: center; }
.rowform input[type="text"], .rowform input[type="file"], .rowform select { width: auto; }
.rowform .label { flex-basis: 100%; font-weight: 600; font-size: .9rem; }
details.mk { margin-top: .3rem; }
details.mk summary { cursor: pointer; color: var(--accent); font-size: .88rem; }
details.mk form { margin-top: .5rem; display: grid; gap: .4rem; }
.dl-list { list-style: none; padding: 0; margin: 1rem 0 0; }
.dl-list li { display: flex; gap: .7rem; align-items: center; justify-content: space-between; padding: .55rem .2rem; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.dl-list .fname { word-break: break-all; }
.codes { display: flex; flex-wrap: wrap; gap: .5rem; list-style: none; padding: 0; }
.codes li { background: #f3f5f8; border-radius: 6px; padding: .3rem .5rem; }
.qr { margin: .6rem 0; }
.qr code { font-size: .82rem; }
@media (max-width: 780px) {
  table.subs { display: block; overflow-x: auto; white-space: nowrap; }
  .body { white-space: normal; }
}