:root {
  --bg: #f6f3ee; --card: #fffdf9; --ink: #1d1b19; --muted: #6b645c; --line: #e3ddd3;
  --accent: #b8332a; --accent-ink: #fff; --ok: #2f7d4f; --off: #b26b00; --warn-bg: #fff1e6;
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Segoe UI", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #161412; --card: #201d1a; --ink: #f1ece4; --muted: #a59d92; --line: #36312b; --accent: #e0574b; --warn-bg: #3a2516; --ok: #6cc28f; --off: #f0a640; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.6 var(--font); }
.top { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between; padding: 12px 16px; border-bottom: 1px solid var(--line); background: var(--card); }
.brand { display: flex; gap: 10px; align-items: center; }
.brand small { display: block; color: var(--muted); font-size: 12px; }
.mark { width: 36px; height: 36px; border-radius: 10px; background: var(--accent); color: var(--accent-ink); display: grid; place-items: center; font-weight: 700; font-size: 20px; }
nav { display: flex; flex-wrap: wrap; gap: 6px; }
main { max-width: 960px; margin: 0 auto; padding: 16px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 20px; margin-bottom: 16px; }
.narrow { max-width: 420px; margin: 40px auto; }
h1 { font-size: 22px; margin: 0 0 6px; }
h2 { font-size: 20px; margin: 8px 0; }
h3 { font-size: 16px; margin: 18px 0 6px; }
label { display: block; font-size: 14px; font-weight: 600; margin: 12px 0 4px; }
input, select, textarea { width: 100%; font: inherit; color: inherit; background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: 9px 10px; }
textarea { resize: vertical; }
button, .btn { font: inherit; border: 0; border-radius: 8px; padding: 9px 14px; background: var(--accent); color: var(--accent-ink); cursor: pointer; text-decoration: none; display: inline-block; }
button:disabled { opacity: .6; cursor: wait; }
.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.tab { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.tab.active { border-color: var(--accent); color: var(--accent); font-weight: 600; }
.link { background: none; color: var(--accent); padding: 0; text-align: left; }
.small { font-size: 13px; }
.muted { color: var(--muted); }
.msg { color: var(--accent); min-height: 1em; }
.row { display: flex; gap: 8px; align-items: center; }
.row input { flex: 1; min-width: 0; }
.grid2, .grid3 { display: grid; gap: 0 12px; grid-template-columns: 1fr; }
@media (min-width: 640px) { .grid2 { grid-template-columns: 1fr 1fr; } .grid3 { grid-template-columns: repeat(3, 1fr); } }
fieldset { border: 1px solid var(--line); border-radius: 10px; margin: 14px 0; padding: 6px 12px 10px; }
legend { font-weight: 600; font-size: 14px; padding: 0 4px; }
.choice { display: flex; gap: 8px; align-items: flex-start; font-weight: 400; }
.choice input { width: auto; margin-top: 6px; }
.licensed { border-left: 3px solid var(--accent); padding-left: 12px; }
.meta { display: flex; gap: 12px; align-items: center; margin-top: 10px; padding: 10px; border: 1px dashed var(--line); border-radius: 10px; }
.meta img { border-radius: 6px; object-fit: cover; flex: none; }
#go { margin-top: 16px; width: 100%; }
.aigc { font-size: 12px; color: var(--muted); border: 1px solid var(--line); border-radius: 8px; padding: 6px 10px; }
.warn { background: var(--warn-bg); border-radius: 8px; padding: 8px 12px; margin: 10px 0; }
.estimate { display: flex; flex-wrap: wrap; gap: 12px; align-items: baseline; justify-content: space-between; padding: 12px; border-radius: 10px; border: 1px solid var(--line); margin: 10px 0; }
.big { font-size: 22px; font-weight: 700; margin-right: 8px; }
pre { white-space: pre-wrap; font-size: 12px; }
.pill { font-size: 12px; border: 1px solid var(--line); border-radius: 999px; padding: 0 8px; font-weight: 400; }
.lyrics { font-size: 15px; }
.stanza { margin: 8px 0; }
.lyric { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; padding: 3px 8px; border-left: 3px solid var(--ok); }
.lyric.off { border-left-color: var(--off); }
.py { color: var(--muted); font-size: 13px; }
.tablewrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
th, td { border-bottom: 1px solid var(--line); padding: 6px; text-align: left; vertical-align: top; }
tr.stale { opacity: .55; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 16px; }
.resultForm { margin-top: 10px; }
.item { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--line); }
.item .link { flex: 1; min-width: 200px; }
.grid-trend { display: grid; gap: 8px; grid-template-columns: 1fr; }
@media (min-width: 720px) { .grid-trend { grid-template-columns: 1fr 1fr 2fr 1fr 2fr auto; } }
.assumptions .arow { display: grid; gap: 8px; grid-template-columns: 1fr; align-items: end; padding: 6px 0; border-bottom: 1px solid var(--line); }
@media (min-width: 640px) { .assumptions .arow { grid-template-columns: 1fr 1fr 1fr; } }
.assumptions label { font-weight: 400; margin: 0; }
.foot { text-align: center; color: var(--muted); font-size: 12px; padding: 24px 16px; }
[hidden] { display: none !important; }