@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Playfair+Display:ital,wght@1,600&display=swap');

:root{--ink:#172a46;--paper:#f3efe7;--white:#fffdf8;--coral:#ef6f61;--gold:#f6c553;--blue:#7596cf;--mint:#9ccab7;--muted:#6f746f;--line:rgba(23,42,70,.14);--shadow:0 24px 70px rgba(23,42,70,.14)}
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clamp(20px,5vw,72px);position:relative;z-index:5}.brand{display:flex;gap:12px;align-items:center;color:inherit;text-decoration:none}.brand-mark{width:42px;height:42px;display:grid;place-items:center;border-radius:50%;background:var(--ink);color:var(--gold);font-weight:800;font-size:13px;letter-spacing:-1px}.brand b{display:block;font-size:15px}.brand small{display:block;font-size:10px;text-transform:uppercase;letter-spacing:1.5px;margin-top:2px;color:var(--muted)}.top-actions{display:flex;align-items:center;gap:10px}.icon-btn{width:42px;height:42px;border:1px solid var(--line);border-radius:50%;background:transparent;color:var(--ink);cursor:pointer;font-size:22px;display:grid;place-items:center;transition:.2s}.icon-btn:hover{background:var(--ink);color:white}.profile-chip{border:1px solid var(--line);border-radius:22px;padding:7px 9px 7px 14px;display:flex;gap:10px;align-items:center;background:rgba(255,255,255,.35);color:var(--ink);cursor:pointer;font-weight:700}.profile-chip 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@media(max-width:900px){.hero-grid{grid-template-columns:1fr}.coordinate-card{width:min(400px,85vw);margin:auto}.chapter-rail{display:flex;overflow-x:auto;padding:6px 0}.chapter-btn{flex:0 0 58px}.mode-grid{grid-template-columns:repeat(2,1fr)}.library-tools{grid-template-columns:1fr 1fr}.search{grid-column:1/-1}}
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@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}}