:root {
  --bg: #f5f3ee; --card: #ffffff; --ink: #1f2430; --muted: #5c6474; --line: #e1ddd3; --soft: #f1eee7;
  --brand: #b23a3a; --brand-ink: #ffffff; --brand-soft: #f8e7e4; --navy: #2b3a55; --navy-soft: #e7ecf5;
  --warn: #8a5300; --warn-bg: #fff3dc; --err: #b3261e; --ok: #1f7a4a; --ok-bg: #e2f3e9;
  --shadow: 0 1px 2px rgba(0,0,0,.05), 0 6px 20px rgba(0,0,0,.05);
  --radius: 14px;
  color-scheme: light;
}
:root[data-theme="dark"] {
  --bg: #13151a; --card: #1c1f26; --ink: #e7e9ee; --muted: #9aa1ae; --line: #2e323c; --soft: #242832;
  --brand: #ef7b6f; --brand-ink: #1a0d0b; --brand-soft: #3a2422; --navy: #9db4dc; --navy-soft: #222c3d;
  --warn: #f2b45a; --warn-bg: #2f2615; --err: #ff8a80; --ok: #6fd3a0; --ok-bg: #173226;
  --shadow: 0 1px 2px rgba(0,0,0,.4);
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--ink); font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; -webkit-text-size-adjust: 100%; }
img { max-width: 100%; }
a { color: var(--brand); }
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; top: 0; }
.skip:focus { left: 8px; top: 8px; background: var(--card); padding: 6px 10px; z-index: 50; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-variant-numeric: tabular-nums; }
.muted { color: var(--muted); }
.small { font-size: 14px; }
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 16px; }

.top { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.top-in { max-width: 1200px; margin: 0 auto; padding: 10px 16px; display: flex; align-items: center; gap: 12px; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 8px; color: var(--ink); text-decoration: none; font-weight: 700; }
.top-actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.lnk { color: var(--muted); text-decoration: none; font-size: 14px; }
.pill { font-size: 13px; padding: 4px 10px; border-radius: 99px; background: var(--soft); border: 1px solid var(--line); }

.btn { font: inherit; font-weight: 600; border: 1px solid var(--line); background: var(--card); color: var(--ink); border-radius: 10px; padding: 9px 16px; cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; gap: 6px; min-height: 40px; }
.btn:hover:not(:disabled) { border-color: var(--brand); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary { background: var(--brand); border-color: var(--brand); color: var(--brand-ink); }
.btn-primary:hover:not(:disabled) { filter: brightness(1.06); }
.btn-ghost { background: transparent; }
.btn-sm { padding: 5px 10px; font-size: 14px; min-height: 32px; }
.btn-lg { padding: 12px 22px; font-size: 17px; }
.file-btn { position: relative; }
.icon-btn { font: inherit; background: transparent; border: 1px solid var(--line); color: var(--ink); border-radius: 10px; width: 38px; height: 38px; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; font-size: 18px; flex: none; }
.icon-btn:disabled { opacity: .4; cursor: default; }
.icon-sm { width: 30px; height: 30px; font-size: 16px; }
.linkish { font: inherit; background: none; border: 0; padding: 0; color: var(--brand); text-decoration: underline; cursor: pointer; text-align: left; }
button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible, .drop:focus-visible, summary:focus-visible { outline: 3px solid color-mix(in srgb, var(--brand) 55%, transparent); outline-offset: 2px; }

.hero { padding: 28px 0 8px; }
.hero h1 { font-size: clamp(26px, 4.4vw, 40px); line-height: 1.15; margin: 0 0 10px; letter-spacing: -.01em; }
.lede { margin: 0; max-width: 820px; color: var(--muted); font-size: 17px; }
.lede strong { color: var(--ink); }
.hero-cta { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; margin-top: 16px; }
.hero-cta .muted { max-width: 560px; }

.grid { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 20px; padding: 18px 0 40px; align-items: start; }
.col-main, .col-side { display: grid; gap: 20px; min-width: 0; }
.col-side { position: sticky; top: 72px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); min-width: 0; }
.card h2 { font-size: 20px; margin: 0; }
.card h3 { font-size: 16px; margin: 18px 0 8px; }
.card-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 12px; }

.lbl { display: block; font-weight: 600; font-size: 14px; margin: 12px 0 6px; }
textarea, input[type="text"], input[type="search"], input[type="number"], select {
  font: inherit; color: var(--ink); background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 8px 10px; width: 100%; }
textarea { resize: vertical; }
.two { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); gap: 12px; }
.tool-row, .export-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; align-items: center; }
.run-row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-top: 12px; }
.meter { margin: 0; font-size: 14px; color: var(--muted); }
.gate { margin: 10px 0 0; padding: 10px 12px; border-radius: 10px; background: var(--warn-bg); color: var(--ink); display: flex; gap: 10px; align-items: center; flex-wrap: wrap; font-size: 14px; }
.notice { margin: 10px 0; padding: 10px 12px; border-radius: 10px; background: var(--warn-bg); font-size: 14px; display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.paste { margin-top: 10px; padding: 12px; border-radius: 12px; background: var(--soft); border: 1px solid var(--line); }
.paste .lbl { margin-top: 0; font-weight: 500; }

.tag { font-size: 12px; font-weight: 600; padding: 2px 8px; border-radius: 99px; background: var(--soft); border: 1px solid var(--line); color: var(--muted); white-space: nowrap; }
.tag-free, .tag-ok { background: var(--ok-bg); color: var(--ok); border-color: transparent; }
.tag-warn { background: var(--warn-bg); color: var(--warn); border-color: transparent; }
.tag-err { background: var(--brand-soft); color: var(--err); border-color: transparent; }
.tag-busy { background: var(--navy-soft); color: var(--navy); border-color: transparent; }
.tag-you { background: var(--navy-soft); color: var(--navy); border-color: transparent; }

/* key editor */
.qlist { list-style: none; padding: 0; margin: 14px 0 10px; display: grid; gap: 12px; counter-reset: none; }
.qitem { border: 1px solid var(--line); border-radius: 12px; padding: 12px; display: grid; gap: 8px; background: var(--card); }
.qhead { display: flex; gap: 10px; align-items: flex-end; }
.fld { display: grid; gap: 2px; }
.fld-l { font-size: 12px; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.qlabel { width: 80px !important; font-weight: 700; }
.qmax { width: 96px !important; }
.q-rm { margin-left: auto; }
.qrubric { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 14px; }
.qmodel summary { cursor: pointer; font-size: 14px; color: var(--muted); font-weight: 600; }
.qmodel textarea { margin-top: 6px; }
.issues { list-style: none; padding: 0; margin: 10px 0 0; display: grid; gap: 4px; }
.issue { font-size: 14px; padding: 6px 10px; border-radius: 8px; }
.issue-error { background: var(--brand-soft); color: var(--err); }
.issue-warn { background: var(--warn-bg); color: var(--warn); }

/* sheets */
.add-sheet { padding: 4px 0 14px; border-bottom: 1px solid var(--line); }
.drop { margin-top: 12px; border: 2px dashed var(--line); border-radius: 12px; background: var(--soft); cursor: pointer; min-height: 130px; display: flex; align-items: center; justify-content: center; text-align: center; padding: 14px; transition: border-color .15s; }
.drop:hover, .drop.dragging { border-color: var(--brand); }
.drop-empty { display: grid; gap: 4px; justify-items: center; }
.drop-icon { font-size: 30px; }
.thumbs { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }
.thumb { position: relative; margin: 0; width: 96px; }
.thumb img { width: 96px; height: 128px; object-fit: cover; border-radius: 6px; border: 1px solid var(--line); display: block; background: #fff; }
.thumb figcaption { text-align: center; color: var(--muted); }
.thumb-x { position: absolute; top: -8px; right: -8px; width: 26px; height: 26px; border-radius: 50%; border: 1px solid var(--line); background: var(--card); color: var(--ink); cursor: pointer; font: inherit; line-height: 1; }
.sheets { list-style: none; padding: 0; margin: 14px 0 0; display: grid; gap: 8px; }
.sheet { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px; align-items: center; }
.sheet-open { font: inherit; color: var(--ink); text-align: left; display: grid; grid-template-columns: 44px minmax(0, 1fr) auto; gap: 10px; align-items: center; background: var(--soft); border: 1px solid var(--line); border-radius: 10px; padding: 6px 10px; cursor: pointer; min-width: 0; }
.sheet-open:hover { border-color: var(--brand); }
.sheet-on .sheet-open { border-color: var(--brand); background: var(--brand-soft); }
.sheet-thumb { width: 44px; height: 56px; border-radius: 4px; overflow: hidden; background: var(--card); display: flex; align-items: center; justify-content: center; border: 1px solid var(--line); }
.sheet-thumb img { width: 100%; height: 100%; object-fit: cover; }
.sheet-who { display: grid; min-width: 0; }
.sheet-who strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sheet-right { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; justify-content: flex-end; }
.sheet-score { font-weight: 700; }
.sheet-acts { display: flex; gap: 6px; align-items: center; }
.sheet-err { grid-column: 1 / -1; margin: 0; color: var(--err); }
.grade-box { margin-top: 16px; padding-top: 6px; border-top: 1px solid var(--line); }

.progress { margin-top: 14px; border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; background: var(--soft); }
.progress-head { display: flex; justify-content: space-between; gap: 8px; margin-bottom: 6px; }
.psteps { list-style: none; margin: 0 0 6px; padding: 0; display: grid; gap: 4px; }
.pstep { display: grid; grid-template-columns: 14px 1fr auto; gap: 8px; align-items: center; font-size: 14px; color: var(--muted); }
.step-dot { width: 10px; height: 10px; border-radius: 50%; border: 2px solid var(--line); }
.pstep-on { color: var(--ink); font-weight: 600; }
.pstep-on .step-dot { border-color: var(--brand); animation: pulse 1s infinite alternate; }
.pstep-done .step-dot { background: var(--brand); border-color: var(--brand); }
.pstep-failed .step-dot { background: var(--err); border-color: var(--err); }
.step-note { font-size: 12px; }
@keyframes pulse { to { background: var(--brand); } }
@media (prefers-reduced-motion: reduce) { .pstep-on .step-dot { animation: none; background: var(--brand); } }

/* review */
.rv-nav { display: flex; gap: 6px; align-items: center; }
.rv-who { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.title-input { font-size: 20px !important; font-weight: 700; border-color: transparent !important; padding: 4px 6px !important; background: transparent !important; flex: 1 1 220px; min-width: 0; width: auto !important; }
.title-input:hover, .title-input:focus { border-color: var(--line) !important; }
#rvRoll { width: 110px; }
.rv-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 18px; margin-top: 12px; align-items: start; }
.rv-pages { position: sticky; top: 72px; }
.pages { display: grid; gap: 10px; }
.page { padding: 0; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; background: #fff; cursor: zoom-in; display: block; width: 100%; }
.page img { display: block; width: 100%; height: auto; }
.page-zoom { position: fixed; inset: 12px; z-index: 70; overflow: auto; cursor: zoom-out; box-shadow: 0 10px 50px rgba(0,0,0,.45); }
.page-zoom img { width: auto; max-width: none; min-width: 100%; }
.score { padding: 14px 16px; border-radius: 12px; background: var(--navy-soft); margin-bottom: 12px; }
.score-big { display: flex; gap: 12px; align-items: baseline; flex-wrap: wrap; }
.score-num { font-size: clamp(26px, 5vw, 34px); font-weight: 800; font-variant-numeric: tabular-nums; }
.score-pct { font-weight: 700; color: var(--muted); }
.score p { margin: 2px 0 0; }
.rows { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.row { border: 1px solid var(--line); border-radius: 12px; padding: 12px; display: grid; gap: 8px; }
.row-flag { border-color: var(--warn); box-shadow: inset 4px 0 0 var(--warn); }
.row-head { display: flex; gap: 10px; align-items: center; }
.row-q { font-weight: 800; font-size: 17px; color: var(--brand); flex: none; }
.row-qt { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.row-marks { display: flex; gap: 6px; align-items: center; flex: none; font-weight: 700; }
.marks { width: 76px !important; font-weight: 800; font-size: 18px; text-align: right; padding: 4px 8px !important; }
.row-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.read { margin: 0; padding: 8px 12px; border-left: 3px solid var(--navy); background: var(--soft); border-radius: 0 8px 8px 0; font-family: "Segoe Print", "Bradley Hand", "Noteworthy", cursive; color: var(--navy); display: grid; gap: 2px; }
.read-l { font-family: system-ui, sans-serif; font-size: 11px; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); font-weight: 700; }
.rubric { list-style: none; padding: 0; margin: 0; display: grid; gap: 3px; font-size: 14px; }
.rl { display: grid; grid-template-columns: 20px minmax(0, 1fr) auto; gap: 6px; align-items: start; color: var(--muted); }
.rl-mark { font-weight: 800; text-align: center; }
.rl-hit { color: var(--ink); } .rl-hit .rl-mark { color: var(--ok); }
.rl-part { color: var(--ink); } .rl-part .rl-mark { color: var(--warn); }
.rl-got { font-size: 13px; }
.just { margin: 0; color: var(--muted); }
.flag { background: var(--warn-bg); border-radius: 8px; padding: 8px 10px; display: grid; gap: 4px; }
.flag strong { color: var(--warn); }
.flag-done { background: var(--ok-bg); }
.flag-done strong { color: var(--ok); }
.flag-ok { display: flex; gap: 6px; align-items: center; cursor: pointer; font-weight: 600; }
.flag-ok input { width: 18px; height: 18px; accent-color: var(--ok); }
.fb { font-size: 14px; }
.rv-actions { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--line); }
.disclaimer { font-size: 13px; color: var(--muted); margin: 14px 0 0; padding: 10px 12px; border-left: 3px solid var(--brand); background: var(--soft); border-radius: 0 8px 8px 0; }

/* class */
.stats { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 8px; }
.stat { background: var(--soft); border-radius: 10px; padding: 8px 10px; display: grid; min-width: 0; }
.stat-l { font-size: 12px; color: var(--muted); font-weight: 700; text-transform: uppercase; letter-spacing: .04em; }
.stat-v { font-weight: 800; font-size: 18px; font-variant-numeric: tabular-nums; white-space: nowrap; }
.bars { display: grid; gap: 6px; }
.bar-row { display: grid; grid-template-columns: 44px minmax(0, 1fr) 150px; gap: 10px; align-items: center; }
.bar-q { font-weight: 700; }
.bar-track { height: 12px; border-radius: 99px; background: var(--soft); overflow: hidden; border: 1px solid var(--line); }
.bar-fill { display: block; height: 100%; background: var(--navy); }
.bar-hard { background: var(--brand); }
.bar-v { text-align: right; }
.table-wrap { overflow-x: auto; margin-top: 14px; border: 1px solid var(--line); border-radius: 10px; }
.cls-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.cls-table th, .cls-table td { padding: 7px 10px; border-bottom: 1px solid var(--line); text-align: left; white-space: nowrap; }
.cls-table th { background: var(--soft); font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.cls-table td.num { text-align: right; font-variant-numeric: tabular-nums; }
.cls-table .cell-flag { background: var(--warn-bg); }
.cls-table tr:last-child td { border-bottom: 0; }

.class-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 6px; }
.cls { display: flex; gap: 6px; align-items: center; }
.cls-open { font: inherit; flex: 1; min-width: 0; display: grid; text-align: left; background: var(--soft); border: 1px solid var(--line); border-radius: 10px; padding: 8px 10px; cursor: pointer; color: var(--ink); }
.cls-open strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cls-on .cls-open, .cls-open:hover { border-color: var(--brand); }
.how ol { padding-left: 18px; margin: 12px 0 8px; }
.how li { margin-bottom: 6px; }

.foot { border-top: 1px solid var(--line); padding: 18px 0 28px; font-size: 14px; color: var(--muted); }
.foot-in { display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.toast { position: fixed; left: 50%; bottom: 18px; transform: translateX(-50%); max-width: min(92vw, 560px); padding: 10px 16px; border-radius: 10px; background: var(--ink); color: var(--bg); font-size: 14px; z-index: 80; box-shadow: var(--shadow); }
.toast-err { background: var(--err); color: #fff; }

@media (max-width: 1000px) {
  .grid { grid-template-columns: minmax(0, 1fr); }
  .col-side { position: static; }
  .stats { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 720px) {
  .rv-grid { grid-template-columns: minmax(0, 1fr); }
  .rv-pages { position: static; }
  .pages { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 560px) {
  .hide-sm { display: none; }
  .card { padding: 14px; }
  .two { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .bar-row { grid-template-columns: 36px minmax(0, 1fr); }
  .bar-v { grid-column: 2; text-align: left; }
  .sheet-open { grid-template-columns: 40px minmax(0, 1fr); }
  .sheet-right { grid-column: 1 / -1; justify-content: flex-start; }
  .row-head { flex-wrap: wrap; }
  .row-qt { flex-basis: 100%; order: 3; }
  .row-marks { margin-left: auto; }
  .brand span { font-size: 14px; line-height: 1.15; max-width: 100px; }
  .top-in { gap: 8px; padding: 8px 12px; }
  .top-actions { flex-wrap: nowrap; gap: 6px; }
  .pill { padding: 3px 8px; font-size: 12px; }
}