:root{
  --wcm-ink:#0D3B3E;
  --wcm-accent:#12A594;
  --wcm-accent-dark:#0C7D71;
  --wcm-accent-soft:#E7F6F4;
  --wcm-action:#FF5C38;
  --wcm-action-dark:#E44A28;
  --wcm-card:#FFFFFF;
  --wcm-card-bd:#E2ECEA;
  --wcm-text:#173A38;
  --wcm-muted:#5B6E6B;
}
html.dark{
  --wcm-ink:#E6EFE8; --wcm-accent:#26C2B0; --wcm-accent-dark:#1B9A8B;
  --wcm-accent-soft:#12332D; --wcm-card:#10241C; --wcm-card-bd:#24463A;
  --wcm-text:#E6EFE8; --wcm-muted:#9FB4A6;
}
.t-kicker--mini{background:var(--wcm-accent);color:#fff}
.wca-sech{display:flex;align-items:center;gap:12px;margin:0 0 18px}
.wca-sech-glyph{width:36px;height:36px;flex-shrink:0;border-radius:10px;background:var(--wcm-accent);color:#fff;font-family:'Syne',system-ui,sans-serif;font-weight:800;font-size:19px;line-height:1;display:flex;align-items:center;justify-content:center;box-shadow:0 3px 9px rgba(18,165,148,.38)}
.wca-sech h2{font-family:'Syne',system-ui,sans-serif;font-weight:800;font-size:1.55rem;letter-spacing:-.02em;margin:0;color:var(--wcm-ink)}
@media(max-width:520px){.wca-sech h2{font-size:1.3rem}}
.wca-section{background:var(--wcm-card);border:1px solid var(--wcm-card-bd);border-left:5px solid var(--wcm-accent);border-radius:16px;padding:28px 26px;margin:24px 0;box-shadow:0 3px 14px rgba(13,59,62,.06)}
@media(max-width:520px){.wca-section{padding:20px 16px;border-radius:12px}}
.wca-byline{display:flex;align-items:center;gap:10px;font-size:.95rem;color:var(--wcm-muted);margin:14px 0 6px}
.wca-byline a{color:var(--wcm-accent-dark);font-weight:700;text-decoration:none}
.wca-byline a:hover{text-decoration:underline}
.wca-byline-avatar{width:34px;height:34px;border-radius:50%;flex-shrink:0;background:var(--wcm-accent);color:#fff;font-family:'Syne',sans-serif;font-weight:800;font-size:14px;display:flex;align-items:center;justify-content:center}
.wca-intro{background:var(--wcm-accent-soft);border-radius:14px;padding:20px 22px;margin:18px 0;font-size:1.06rem;line-height:1.65;color:var(--wcm-text)}
.wca-intro strong{font-weight:700;color:var(--wcm-ink)}
.wca-intro a{color:var(--wcm-accent-dark);font-weight:600}
.cab-pair{padding:16px 0;border-bottom:1px solid var(--wcm-card-bd)}
.cab-pair:last-child{border-bottom:0}
.cab-clue-label{display:inline-block;font-size:.7rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--wcm-accent-dark);margin-bottom:4px}
.cab-clue{font-size:1.08rem;font-weight:600;color:var(--wcm-ink);margin-bottom:10px}
.cab-answer-line{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.answer-tile{width:34px;height:38px;border-radius:8px;background:var(--wcm-card);border:2px solid var(--wcm-accent);color:var(--wcm-ink);font-family:'Fragment Mono',monospace;font-weight:700;font-size:18px;display:inline-flex;align-items:center;justify-content:center;text-transform:uppercase}
.cab-answer-row{display:flex;gap:6px;flex-wrap:wrap}
.cab-copy{margin-left:auto;background:var(--wcm-action);color:#fff;border:0;font-family:'Instrument Sans',system-ui,sans-serif;font-weight:700;font-size:.82rem;padding:9px 16px;border-radius:9px;cursor:pointer;min-height:40px;transition:background .15s ease}
.cab-copy:hover,.cab-copy:focus{background:var(--wcm-action-dark)}
@media(max-width:520px){.cab-copy{margin-left:0}}
.wca-bd-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}
.wca-bd-card{display:flex;gap:14px;background:var(--wcm-card);border:1px solid var(--wcm-card-bd);border-radius:12px;padding:16px}
.wca-bd-num{width:30px;height:30px;flex-shrink:0;border-radius:8px;background:var(--wcm-accent-soft);color:var(--wcm-accent-dark);font-family:'Syne',sans-serif;font-weight:800;font-size:15px;display:flex;align-items:center;justify-content:center}
.wca-bd-clue{display:block;font-weight:700;color:var(--wcm-ink);font-size:1rem}
.wca-bd-answer{display:inline-block;font-family:'Fragment Mono',monospace;font-weight:700;color:var(--wcm-action-dark);letter-spacing:.05em;margin:2px 0 6px}
.wca-bd-prose{margin:0;color:var(--wcm-text);font-size:.94rem;line-height:1.55}
#copy-toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(10px);background:var(--wcm-ink);color:#fff;padding:11px 18px;border-radius:10px;font-weight:600;font-size:.9rem;opacity:0;pointer-events:none;z-index:9998;transition:opacity .2s ease,transform .2s ease}
#copy-toast.show{opacity:1;transform:translateX(-50%) translateY(0)}