:root{
  --primary:#167C82; --accent:#F28C6F; --blue:#5A8DFF;
  --bg:#F8FAFA; --panel:#FFFFFF; --text:#182325; --muted:#617174;
  --border:rgba(22,124,130,0.14); --shadow:0 10px 30px rgba(10,25,30,0.08);
  --radius:28px; --maxw:1120px;
}
*{ box-sizing:border-box; -webkit-tap-highlight-color:transparent; }
html{ scroll-behavior:smooth; }
body{ margin:0; font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg); color:var(--text); line-height:1.5; }
a{ color:inherit; text-decoration:none; }
button{ font:inherit; }

.page-bg{ position:fixed; inset:0; overflow:hidden; pointer-events:none; z-index:-1; }
.orb{ position:absolute; border-radius:999px; filter:blur(70px); opacity:.22; }
.orb.a{ width:320px; height:320px; left:-120px; top:-80px;
  background:radial-gradient(circle at 30% 30%, rgba(22,124,130,.9), rgba(90,141,255,.45)); }
.orb.b{ width:380px; height:380px; right:-120px; top:120px;
  background:radial-gradient(circle at 30% 30%, rgba(242,140,111,.7), rgba(22,124,130,.25)); }

.shell{ width:min(var(--maxw), calc(100vw - 28px)); margin:0 auto; }
.site-header{ position:sticky; top:0; z-index:30; backdrop-filter:blur(16px);
  background:rgba(248,250,250,0.82); border-bottom:1px solid rgba(255,255,255,0.18); }
.header-row{ display:flex; align-items:center; justify-content:space-between; gap:16px; padding:14px 0; flex-wrap:wrap; }
.brand-link{ display:inline-flex; flex-direction:column; gap:4px; }
.brand-title{ position:relative; display:inline-block; font-size:26px; line-height:1;
  font-weight:900; letter-spacing:-0.04em; padding-bottom:9px; }
.brand-title b{ color:var(--primary); }
.brand-title::after{ content:""; position:absolute; left:0; bottom:0; width:100%; height:4px;
  border-radius:999px; background:linear-gradient(90deg,var(--primary),var(--accent),var(--blue)); }
.brand-tag{ font-size:11px; color:var(--muted); letter-spacing:.10em; text-transform:uppercase; }
.nav{ display:flex; flex-wrap:wrap; gap:6px; align-items:center; }
.nav-btn{ border:0; background:transparent; cursor:pointer; padding:9px 15px; border-radius:999px;
  color:#334155; font-weight:500; transition:background-color .2s, color .2s; }
.nav-btn:hover, .nav-btn.active{ background:var(--primary); color:#fff; box-shadow:var(--shadow); }
.nav-btn.ghost{ color:var(--muted); }
.nav-btn.ghost:hover{ background:rgba(22,124,130,.10); color:var(--primary); box-shadow:none; }

.main{ padding:26px 0 70px; }
h1.page-h{ font-size:clamp(1.5rem,3.5vw,2.1rem); letter-spacing:-0.03em; margin:0 0 4px; }
.lead{ color:var(--muted); margin:0 0 18px; max-width:720px; }
.panel, .card{ background:var(--panel); border:1px solid var(--border);
  border-radius:var(--radius); box-shadow:var(--shadow); }
.btn{ border:0; border-radius:999px; padding:13px 20px; font-weight:700; cursor:pointer; }
.btn.primary{ background:var(--primary); color:#fff; box-shadow:var(--shadow); }
.btn.primary:disabled{ opacity:.45; cursor:not-allowed; }
.btn.secondary{ background:#fff; color:var(--blue); border:1px solid rgba(90,141,255,.25); }
.footer{ border-top:1px solid var(--border); }
.footer-row{ display:flex; align-items:center; justify-content:space-between; gap:14px;
  padding:22px 0; color:var(--muted); font-size:13px; }

/* Compare page */
.page-head{ text-align:center; margin-bottom:16px; }
.cards{ display:grid; grid-template-columns:1fr 1fr; gap:16px; }
@media (max-width:720px){ .cards{ grid-template-columns:1fr; } }
.card.choice{ overflow:hidden; display:flex; flex-direction:column; border-width:2px;
  transition:border-color .15s; }
.card.choice.sel{ border-color:var(--primary); }
.viewer{ position:relative; width:100%; height:300px; background:#eef4f4;
  touch-action:none; cursor:grab; }
.viewer:active{ cursor:grabbing; }
@media (max-width:720px){ .viewer{ height:280px; } }
.vtag{ position:absolute; top:10px; left:12px; font-weight:800; font-size:.72rem;
  color:var(--muted); letter-spacing:.10em; z-index:5; pointer-events:none; }
.hint{ position:absolute; bottom:8px; right:12px; font-size:.66rem; color:var(--muted);
  z-index:5; pointer-events:none; }
.nc{ position:absolute; bottom:8px; left:12px; z-index:5; pointer-events:none;
  display:flex; align-items:center; gap:6px; font-size:.66rem; color:var(--muted); font-weight:700; }
.nc .bar{ width:60px; height:8px; border-radius:5px;
  background:linear-gradient(90deg,#1f449c,#3d65A6,#7CA1cc,#a8b6cc,#eebab4,#e57a77,#f05039); }
.choose{ border:0; padding:15px; font-size:1rem; font-weight:700; cursor:pointer;
  background:#f4f8f8; color:var(--text); border-top:1px solid var(--border); }
.choose.sel{ background:var(--primary); color:#fff; }
.mid{ text-align:center; color:var(--text); font-weight:700; margin:18px 0 6px; }
.mid span{ color:var(--muted); font-weight:400; }
.reasons{ display:flex; flex-wrap:wrap; gap:8px; justify-content:center; }
.chip{ border:1px solid var(--border); background:#fff; color:#334155;
  padding:9px 13px; border-radius:999px; font-size:.85rem; cursor:pointer; transition:.15s; }
.chip:hover{ border-color:var(--primary); }
.chip.on{ background:var(--primary); color:#fff; border-color:var(--primary); font-weight:600; }
textarea, input, select{ width:100%; border:1px solid var(--border); border-radius:18px;
  padding:13px 15px; font:inherit; color:var(--text); background:#fff; outline:none; }
textarea{ min-height:64px; resize:vertical; }
textarea:focus, input:focus, select:focus{ border-color:var(--primary); }
.actions{ display:flex; gap:10px; margin-top:12px; }
.actions .btn{ flex:1; } .actions .btn.secondary{ flex:0 0 auto; }
.reveal{ margin-top:16px; padding:16px; display:none; }
.reveal.show{ display:block; }
.rrow{ display:flex; justify-content:space-between; gap:10px; padding:7px 0;
  border-bottom:1px dashed var(--border); font-size:.92rem; }
.rrow:last-child{ border-bottom:0; }
.agree{ font-weight:700; } .agree.yes{ color:var(--primary); } .agree.no{ color:var(--accent); }
.score-pill{ font-weight:800; color:var(--primary); }
.drivers{ display:flex; flex-wrap:wrap; gap:6px; margin-top:6px; }
.dchip{ background:rgba(22,124,130,.10); color:var(--primary); border:1px solid var(--border);
  padding:3px 9px; border-radius:999px; font-size:.75rem; font-weight:600; }

/* Leaderboard / rate page */
.srow{ display:grid; grid-template-columns:96px 1fr auto auto; gap:16px; align-items:center;
  padding:12px 16px; margin-bottom:10px; }
@media (max-width:640px){
  .srow{ grid-template-columns:76px 1fr; grid-template-areas:"thumb info" "score score" "verd verd"; row-gap:12px; }
  .srow .sscore{ grid-area:score; } .srow .verdicts{ grid-area:verd; }
  .srow .thumb{ grid-area:thumb; } .srow .srow-info{ grid-area:info; }
}
.thumb{ width:96px; height:78px; border-radius:14px; border:1px solid var(--border);
  background:#eef4f4; object-fit:contain; cursor:zoom-in; transition:border-color .15s; }
.thumb:hover{ border-color:var(--primary); }

/* Click-to-view popup structure viewer */
.modal{ position:fixed; inset:0; z-index:100; display:none; }
.modal.open{ display:block; }
.modal-backdrop{ position:absolute; inset:0; background:rgba(15,23,37,0.55); backdrop-filter:blur(4px); }
.modal-card{ position:relative; z-index:1; width:min(92vw,640px); margin:6vh auto; padding:18px 18px 14px;
  background:var(--panel); border:1px solid var(--border); border-radius:var(--radius); box-shadow:var(--shadow); }
.modal-close{ position:absolute; top:10px; right:12px; width:36px; height:36px; border:0; border-radius:999px;
  background:#f4f8f8; color:var(--text); font-size:22px; line-height:1; cursor:pointer; }
.modal-close:hover{ background:rgba(22,124,130,.10); color:var(--primary); }
.modal-title{ font-weight:800; font-size:1.1rem; padding-right:40px; }
.modal-sub{ color:var(--muted); font-size:.9rem; margin:2px 0 12px; }
.modal-viewer{ position:relative; width:100%; height:min(58vh,460px); background:#eef4f4;
  border-radius:16px; border:1px solid var(--border); touch-action:none; cursor:grab; }
.modal-viewer:active{ cursor:grabbing; }
.modal-drivers{ display:flex; flex-wrap:wrap; gap:6px; margin-top:12px; }
@media (max-width:640px){ .thumb{ width:76px; height:64px; } }
.slabel{ font-weight:800; font-size:1.02rem; }
.snote{ color:var(--muted); font-size:.84rem; margin-top:2px; }
.sscore{ text-align:center; }
.sscore b{ font-size:1.7rem; font-weight:900; color:var(--primary); letter-spacing:-0.03em; }
.sscore span{ color:var(--muted); font-size:.8rem; display:block; }
.verdicts{ display:flex; gap:6px; flex-wrap:wrap; }
.vbtn{ border:1px solid var(--border); background:#fff; color:#334155; cursor:pointer;
  padding:9px 12px; border-radius:999px; font-size:.82rem; font-weight:600; transition:.15s; white-space:nowrap; }
.vbtn:hover{ border-color:var(--primary); }
.vbtn.low.on{ background:var(--blue); color:#fff; border-color:var(--blue); }
.vbtn.ok.on{ background:var(--primary); color:#fff; border-color:var(--primary); }
.vbtn.high.on{ background:var(--accent); color:#fff; border-color:var(--accent); }
.vstatus{ font-size:.78rem; font-weight:600; align-self:center; white-space:nowrap; }
.vstatus.ok{ color:var(--primary); } .vstatus.err{ color:var(--accent); }
.vbtn.nf{ border-color:rgba(240,80,57,.35); color:#c0392b; }
.vbtn.nf.on{ background:#f05039; color:#fff; border-color:#f05039; }

/* sort toolbar */
.toolbar{ display:flex; gap:10px; align-items:center; flex-wrap:wrap; margin:2px 0 16px; }
.toolbar .lbl{ color:var(--muted); font-size:.85rem; }
.seg{ display:inline-flex; border:1px solid var(--border); border-radius:999px; overflow:hidden; }
.seg button{ border:0; background:#fff; color:#334155; padding:7px 14px; font-size:.85rem; font-weight:600; cursor:pointer; }
.seg button.on{ background:var(--primary); color:#fff; }

/* "Not a fold" flag on compare cards */
.nf-check{ display:flex; align-items:center; justify-content:center; gap:8px; padding:11px;
  font-size:.85rem; color:var(--muted); border-top:1px solid var(--border); cursor:pointer; user-select:none; }
.nf-check input{ width:auto; accent-color:#f05039; }
.nf-check.on{ color:#c0392b; font-weight:600; }
.footer-row #fc-updated{ color:var(--muted); }
.scorebar{ height:8px; border-radius:5px; margin-top:8px; background:var(--border); overflow:hidden; }
.scorebar > i{ display:block; height:100%;
  background:linear-gradient(90deg,#1f449c,#3d65A6,#7CA1cc,#a8b6cc,#eebab4,#e57a77,#f05039); }

/* Results table */
.statcards{ display:flex; gap:12px; flex-wrap:wrap; margin:6px 0 20px; }
.stat{ padding:16px 20px; flex:1; min-width:160px; }
.stat .n{ font-size:1.7rem; font-weight:900; color:var(--primary); letter-spacing:-0.03em; }
.stat .l{ color:var(--muted); font-size:.82rem; margin-top:2px; }
table{ width:100%; border-collapse:collapse; font-size:.9rem; }
th,td{ text-align:left; padding:10px 8px; border-bottom:1px solid var(--border); }
th{ color:var(--muted); font-weight:600; }
td.num, th.num{ text-align:right; }
.tbl-wrap{ padding:8px 16px 4px; overflow-x:auto; }
.bar{ height:7px; background:var(--border); border-radius:4px; overflow:hidden; min-width:70px; }
.bar > i{ display:block; height:100%; background:linear-gradient(90deg,var(--primary),var(--blue)); }

/* About page */
.aspect{ padding:16px 18px; margin-bottom:10px; display:grid;
  grid-template-columns:auto 1fr auto; gap:14px; align-items:start; }
.aspect .w{ font-weight:900; color:var(--primary); font-size:1.1rem; min-width:44px; }
.aspect .t{ font-weight:800; }
.aspect .p{ color:var(--muted); font-size:.92rem; margin-top:3px; line-height:1.6; }
.aspect .wt{ color:var(--muted); font-size:.78rem; white-space:nowrap; align-self:center; }
.form-card{ padding:22px 24px; margin-top:8px; }
.field-grid{ display:grid; gap:14px; grid-template-columns:repeat(2,minmax(0,1fr)); margin-top:8px; }
.span-2{ grid-column:span 2; }
select{ appearance:none;
  background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);
  background-position:calc(100% - 18px) calc(50% - 3px),calc(100% - 12px) calc(50% - 3px);
  background-size:6px 6px; background-repeat:no-repeat; }
@media (max-width:640px){ .field-grid{ grid-template-columns:1fr; } .span-2{ grid-column:span 1; }
  .aspect{ grid-template-columns:auto 1fr; } .aspect .wt{ display:none; } }
.muted-note{ color:var(--muted); font-size:.9rem; line-height:1.7; margin:6px 0 22px; }