.pub.ff{max-width:1100px}.ff-hero{display:block;padding:16px 0 48px;max-width:760px;background:none;border-bottom:none}.ff-hero h1{font-size:clamp(2.1rem,4.4vw,3rem);letter-spacing:-.035em;line-height:1.06}.ff-search{display:flex;align-items:center;gap:14px;margin-top:32px;background:#fff;border:2px solid var(--charcoal);border-radius:16px;padding:0 12px 0 20px;height:68px;box-shadow:0 1px 3px #2c2c2c0a,0 8px 24px #2c2c2c14}.ff-search:focus-within{border-color:var(--ember);box-shadow:0 0 0 4px var(--ember-bg),0 8px 24px #2c2c2c14}.ff-search svg{color:var(--charcoal);flex-shrink:0}.ff-search input{flex:1 1 auto;min-width:0;border:none;outline:none;background:none;font-family:DM Sans,sans-serif;font-weight:500;font-size:1.25rem;color:var(--charcoal)}.ff-search input::placeholder{color:var(--gray-400)}.ff-search input::-webkit-search-cancel-button{display:none}.ff-clear{border:none;background:var(--cream-dark);color:var(--charcoal);width:36px;height:36px;border-radius:10px;display:grid;place-items:center;cursor:pointer}.ff-clear:focus-visible{outline:2px solid var(--ember);outline-offset:2px}.pub .ff-try{margin:14px 0 0;font-size:.9rem;color:var(--gray-500)}.ff-try button{border:none;background:none;padding:0;font:inherit;color:var(--ember);cursor:pointer;text-decoration:underline;text-decoration-color:#e8683a59;text-underline-offset:3px}.ff-try button:hover{text-decoration-color:var(--ember)}.ff-sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.ff-body{display:grid;grid-template-columns:220px minmax(0,1fr);gap:48px;margin-bottom:80px;align-items:start}.ff-rail{position:sticky;top:96px;display:grid;gap:2px}.ff-rail button{display:flex;justify-content:space-between;gap:12px;align-items:baseline;text-align:left;border:none;background:none;padding:7px 12px;border-radius:10px;cursor:pointer;font:inherit;font-size:.9rem;color:#4a4a4a}.ff-rail button:hover:not(:disabled){background:var(--cream-dark)}.ff-rail button.is-on{background:var(--charcoal);color:var(--cream)}.ff-rail button:disabled{color:var(--gray-400);cursor:default}.ff-rail button:focus-visible{outline:2px solid var(--ember);outline-offset:1px}.ff-n{font-family:JetBrains Mono,monospace;font-size:.75rem;opacity:.75}.ff-results{min-width:0}.pub .ff-count{font-size:.9rem;color:var(--gray-500);margin:6px 0 20px}.pub .ff-note{font-size:.9rem;color:#4a4a4a;margin:-8px 0 20px;max-width:64ch}.ff-note strong{color:var(--ember);font-weight:600}.ff-empty{background:#fff;border-radius:16px;padding:28px}.ff-group{background:#fff;border-radius:16px;padding:8px 32px 12px;margin-bottom:24px;box-shadow:0 1px 3px #2c2c2c0a,0 4px 16px #2c2c2c0f}.ff-group-head{display:flex;align-items:center;gap:12px;padding:20px 0 12px;flex-wrap:wrap}.ff-group-head .coin{--coin-d: 30px !important}.pub .ff-group-head h2{font-size:1.3rem;margin:0;letter-spacing:-.02em}.ff-group-links{margin-left:auto;display:flex;gap:18px}.ff-group-links a{font-size:.85rem;font-weight:500;color:var(--ember);text-decoration:none}.ff-group-links a:hover{text-decoration:underline}.ff-entry{padding:22px 0 24px;border-top:1px solid var(--gray-200);scroll-margin-top:96px}.ff-entry:target{background:linear-gradient(to right,var(--sunbeam-bg),transparent 70%);margin:0 -32px;padding-left:32px;padding-right:32px}.ff-entry-head{display:flex;justify-content:space-between;align-items:baseline;gap:16px;margin-bottom:14px}.pub .ff-entry h3{font-size:1.05rem;margin:0}.ff-entry h3 a{color:var(--charcoal);text-decoration:none}.ff-entry h3 a:hover{color:var(--ember)}.ff-page{font-family:JetBrains Mono,monospace;font-size:.75rem;color:var(--gray-500);white-space:nowrap}.ff-memorize{color:var(--ember)}.ff-entry-body{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:32px;align-items:start}.ff-math{font-size:1.2rem;overflow-x:auto;padding:6px 0}.pub .ff-use{margin:0 0 12px;color:#4a4a4a;font-size:.95rem}.ff-symbols{margin:0;display:grid;gap:7px}.ff-symbols>div{display:grid;grid-template-columns:4.5rem minmax(0,1fr);gap:12px;align-items:baseline}.ff-symbols dt{text-align:right;overflow-x:auto}.ff-symbols dd{margin:0;font-size:.9rem;color:#4a4a4a;line-height:1.5}.ff-units{display:inline-block;margin-left:8px;font-family:JetBrains Mono,monospace;font-size:.75rem;color:var(--gray-500)}.pub .ff-trap{margin:14px 0 0;font-size:.9rem;color:#4a4a4a;padding-left:12px;border-left:3px solid var(--sunbeam)}.ff-trap strong{font-family:DM Sans,sans-serif;font-weight:600;color:var(--charcoal)}@media(max-width:900px){.ff-body{grid-template-columns:1fr;gap:20px}.ff-rail{position:static;display:flex;gap:6px;overflow-x:auto;padding-bottom:6px;scrollbar-width:thin}.ff-rail button{flex:0 0 auto;background:#fff;white-space:nowrap}.ff-entry-body{grid-template-columns:1fr;gap:14px}}@media(max-width:600px){.ff-search{height:58px;padding-left:16px}.ff-search input{font-size:1.05rem}.ff-group{padding:4px 18px 8px}.ff-entry:target{margin:0 -18px;padding-left:18px;padding-right:18px}.ff-group-links{margin-left:0;width:100%}.ff-symbols>div{grid-template-columns:3.5rem minmax(0,1fr)}}