:root { --fg:#1b1f24; --muted:#59636e; --accent:#2457d6; --accent2:#6a3df0; --soft:#f5f7fa; --line:#e3e7ec; }
* { box-sizing:border-box; }
html { scroll-behavior:smooth; }
body { margin:0; font:17px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif; color:var(--fg); background:#fff; }
.wrap { max-width:960px; margin:0 auto; padding:0 20px; }
a { color:var(--accent); }

.hero { text-align:center; padding:60px 0 36px; background:linear-gradient(180deg,#eef2ff 0%,#fff 100%); }
.venue { display:inline-block; background:var(--accent); color:#fff; padding:3px 14px; border-radius:999px; font-size:.85rem; font-weight:600; margin-bottom:14px; }
h1 { font-size:2.2rem; line-height:1.25; margin:0 0 16px; }
.authors { font-size:1.15rem; display:flex; gap:22px; justify-content:center; flex-wrap:wrap; }
.authors span, .authors a { font-weight:500; }
.affil { color:var(--muted); margin:6px 0 20px; }
.links { display:flex; flex-wrap:wrap; gap:10px; justify-content:center; }
.btn { padding:9px 22px; border-radius:999px; background:var(--fg); color:#fff; text-decoration:none; font-size:.95rem; transition:.15s; }
.btn:not(.off):hover { background:var(--accent); transform:translateY(-1px); }
.btn.off { background:#c4cad2; cursor:default; }
.tagline { max-width:700px; margin:24px auto 8px; font-size:1.1rem; color:#2b3440; }

.stats { display:grid; grid-template-columns:repeat(auto-fit,minmax(170px,1fr)); gap:14px; margin-top:26px; }
.stat { background:#fff; border:1px solid var(--line); border-radius:12px; padding:14px; box-shadow:0 1px 3px rgba(0,0,0,.04); }
.stat b { display:block; font-size:2rem; color:var(--accent); }
.stat span { color:var(--muted); font-size:.88rem; }

section { padding:30px 0; }
h2 { font-size:1.6rem; margin:0 0 14px; }
h3 { margin:14px 0 8px; font-size:1.1rem; }
.hint { color:var(--muted); font-size:.92rem; margin:-6px 0 12px; }
.abstract { background:var(--soft); padding:20px 24px; border-radius:12px; text-align:justify; }

.cards { display:grid; grid-template-columns:repeat(auto-fit,minmax(260px,1fr)); gap:16px; }
.card { border:1px solid var(--line); border-radius:12px; padding:18px; background:#fff; box-shadow:0 1px 3px rgba(0,0,0,.04); }
.card .num { font-weight:800; color:var(--accent2); font-size:1.2rem; }
.card h3 { margin:4px 0 8px; }
.card p { margin:0; font-size:.95rem; color:#2b3440; }

.steps { display:flex; flex-wrap:wrap; gap:10px; }
.step { border:1px solid var(--line); background:#fff; border-radius:999px; padding:8px 18px; cursor:pointer; font:inherit; font-size:.95rem; }
.step span { display:inline-block; width:22px; height:22px; line-height:22px; border-radius:50%; background:var(--soft); margin-right:8px; font-size:.8rem; }
.step.active { background:var(--accent); color:#fff; border-color:var(--accent); }
.step.active span { background:rgba(255,255,255,.25); }
.stage-text { background:var(--soft); border-left:4px solid var(--accent); padding:12px 16px; border-radius:6px; margin:14px 0; }

.tabs { display:flex; flex-wrap:wrap; gap:8px; margin-bottom:6px; }
.tab { border:1px solid var(--line); background:#fff; border-radius:8px; padding:7px 14px; cursor:pointer; font:inherit; font-size:.92rem; }
.tab.active { background:var(--fg); color:#fff; border-color:var(--fg); }
.table-scroll { overflow-x:auto; border:1px solid var(--line); border-radius:8px; }
table { border-collapse:collapse; width:100%; font-size:.88rem; font-variant-numeric:tabular-nums; }
th, td { padding:7px 10px; text-align:right; white-space:nowrap; }
th:first-child, td:first-child { text-align:left; position:sticky; left:0; background:#fff; }
thead th { background:var(--soft); }
th.sortable { cursor:pointer; user-select:none; }
th.sortable:hover { color:var(--accent); }
tbody tr:nth-child(even) td { background:#fafbfc; }
tr.ours td { background:#eef2ff !important; font-weight:600; }
td.best { font-weight:700; color:var(--accent); }
tfoot td { border-top:2px solid var(--line); font-weight:600; }
.note { color:var(--muted); font-size:.88rem; }

figure { margin:20px 0; text-align:center; }
figure img { max-width:100%; height:auto; border:1px solid var(--line); border-radius:8px; }
figcaption { color:var(--muted); font-size:.92rem; margin-top:8px; text-align:left; }

pre { background:#0f1720; color:#e6edf3; padding:16px; border-radius:8px; overflow-x:auto; font-size:.85rem; }
.copy { margin-left:10px; font:inherit; font-size:.8rem; padding:3px 12px; border:1px solid var(--line); border-radius:6px; background:#fff; cursor:pointer; vertical-align:middle; }

footer { color:var(--muted); font-size:.88rem; text-align:center; padding:30px 20px 50px; border-top:1px solid var(--line); margin-top:30px; }
@media (max-width:600px) { h1 { font-size:1.6rem; } }