.pub{--pub-accent: var(--ember);--pub-accent-bg: var(--ember-bg);max-width:1000px;margin:0 auto;padding:40px 24px 80px;font-family:Inter,sans-serif;color:var(--charcoal);line-height:1.65}.pub-accent-ember{--pub-accent: var(--ember);--pub-accent-bg: var(--ember-bg)}.pub-accent-forest{--pub-accent: var(--forest);--pub-accent-bg: var(--forest-bg)}.pub-accent-sunbeam{--pub-accent: var(--sunbeam);--pub-accent-bg: var(--sunbeam-bg)}.pub h1,.pub h2,.pub h3{font-family:DM Sans,sans-serif;font-weight:700;letter-spacing:-.025em;color:var(--charcoal)}.pub h1{font-size:clamp(2rem,4vw,2.7rem);line-height:1.12;margin:0 0 18px}.pub h2{font-size:1.55rem;margin:0 0 22px}.pub h3{font-size:1.05rem;font-weight:600;margin:0 0 6px}.pub p{margin:0 0 16px}.pub-label{display:inline-flex;align-items:center;gap:.6rem;font-family:DM Sans,sans-serif;font-size:.7rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--gray-500);margin-bottom:.9rem}.pub-label-dash{width:22px;height:2px;background:var(--pub-accent);display:inline-block;border-radius:2px}.pub-breadcrumb{display:flex;gap:8px;align-items:center;font-size:.8rem;color:var(--gray-500);margin-bottom:24px}.pub-breadcrumb a{color:var(--ember);text-decoration:none;font-weight:500}.pub-breadcrumb a:hover{text-decoration:underline}.pub-hero{display:flex;align-items:center;justify-content:space-between;gap:36px;background:radial-gradient(130% 150% at 100% 0%,var(--cream-dark) 0%,transparent 52%),#fff;border:none;border-top:4px solid var(--pub-accent);border-radius:24px;padding:48px;box-shadow:0 1px 3px #2c2c2c0a,0 8px 28px #2c2c2c12;margin-bottom:56px}.pub-hero-text{flex:1 1 auto;min-width:0}.pub-hero-text h1{margin-bottom:16px}.pub-hero-icon{flex-shrink:0;color:var(--pub-accent);display:grid;place-items:center;width:96px;height:96px;border-radius:20px;background:var(--pub-accent-bg)}.pub-lede{font-size:1.15rem;color:#4a4a4a;max-width:60ch;margin:0}.pub-cta-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.pub-btn{display:inline-flex;align-items:center;gap:7px;padding:13px 22px;border-radius:10px;font-family:DM Sans,sans-serif;font-weight:600;font-size:.96rem;text-decoration:none;transition:transform .1s ease,background .15s ease,box-shadow .15s ease}.pub-btn:active{transform:translateY(1px)}.pub-btn-primary{background:var(--ember);color:#fff;box-shadow:0 4px 14px #e8683a47}.pub-btn-primary:hover{background:#d4582c;box-shadow:0 6px 18px #e8683a57}.pub-btn-ghost{background:var(--cream-dark);color:var(--charcoal)}.pub-btn-ghost:hover{background:#ece2d2}.pub-section{margin-bottom:56px}.pub-section-lede{color:var(--gray-500);max-width:66ch;margin:-6px 0 26px}.pub-panel{background:#fff;border-radius:20px;padding:40px 44px;box-shadow:0 1px 3px #2c2c2c0a,0 6px 22px #2c2c2c0f}.pub-rows{margin-top:4px}.pub-row{display:grid;grid-template-columns:52px 1fr;gap:8px;padding:24px 0 24px 14px;border-top:1px solid var(--gray-200);position:relative}.pub-row:before{content:"";position:absolute;left:0;top:-1px;bottom:0;width:3px;background:var(--pub-accent);border-radius:2px;opacity:0;transition:opacity .25s ease}.pub-row:hover:before{opacity:1}.pub-row-num{font-family:JetBrains Mono,monospace;font-size:.82rem;font-weight:600;color:var(--pub-accent);padding-top:2px}.pub-row-body h3{margin:0 0 6px}.pub-row-body p{margin:0;color:#4a4a4a;font-size:.95rem;max-width:62ch}.pub-formulas{list-style:none;padding:0;margin:0}.pub-formulas li{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;padding:16px 0;border-top:1px solid var(--gray-200)}.pub-formulas li:first-child{border-top:none}.pub-formula-math{font-size:1.18rem;flex:1 1 auto}.pub-formula-meta{display:flex;flex-direction:column;align-items:flex-end;text-align:right}.pub-formula-label{font-family:DM Sans,sans-serif;font-weight:600;font-size:.9rem}.pub-formula-page{font-family:JetBrains Mono,monospace;font-size:.72rem;color:var(--gray-500);margin-top:2px}.pub-problems{display:grid;gap:16px}.pub-problem{background:#fff;border-radius:16px;padding:26px;box-shadow:0 1px 3px #2c2c2c0a,0 4px 16px #2c2c2c0f}.pub-problem-q{margin-bottom:12px;line-height:1.6}.pub-problem-tag{display:inline-block;font-family:DM Sans,sans-serif;font-weight:700;font-size:.72rem;color:var(--pub-accent);background:var(--pub-accent-bg);padding:3px 9px;border-radius:6px;margin-right:10px;vertical-align:1px}.pub-problem-a{display:inline-block;color:var(--forest);background:var(--forest-bg);font-size:.92rem;padding:5px 12px;border-radius:8px;margin:0 0 12px}.pub-eli5 summary{cursor:pointer;font-family:DM Sans,sans-serif;font-weight:600;font-size:.9rem;color:var(--ember);list-style:none}.pub-eli5 summary::-webkit-details-marker{display:none}.pub-eli5 summary:before{content:"＋ ";font-weight:700}.pub-eli5[open] summary:before{content:"－ "}.pub-eli5 p{margin:10px 0 0;font-size:.95rem;color:#4a4a4a}.pub-note{font-size:.92rem;color:var(--gray-500);margin-top:18px}.pub-traps{list-style:none;padding:0;margin:0;display:grid;gap:14px}.pub-traps li{display:grid;grid-template-columns:16px 1fr;gap:12px;align-items:start;color:#4a4a4a;font-size:.95rem}.pub-trap-mark{width:7px;height:7px;border-radius:2px;background:var(--pub-accent);margin-top:8px;transform:rotate(45deg)}.pub-facts{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:14px}.pub-facts li{background:#fff;border-radius:14px;padding:18px 22px;display:flex;flex-direction:column;gap:5px;box-shadow:0 1px 3px #2c2c2c0a,0 4px 14px #2c2c2c0d;border-top:3px solid var(--pub-accent)}.pub-facts span{font-size:.68rem;text-transform:uppercase;letter-spacing:.06em;color:var(--gray-500);font-family:DM Sans,sans-serif;font-weight:600}.pub-facts strong{font-size:1rem}.pub-ch-row{display:grid;grid-template-columns:32px 30px 1fr auto 16px;align-items:center;gap:14px;padding:16px 10px;border-top:1px solid var(--gray-200);text-decoration:none;color:var(--charcoal);border-radius:10px;transition:background .15s ease}.pub-ch-row:first-child{border-top:none}.pub-ch-row:hover{background:var(--cream)}.pub-ch-num{font-family:JetBrains Mono,monospace;font-size:.78rem;color:var(--gray-400)}.pub-ch-icon{color:var(--pub-accent);display:flex;align-items:center}.pub-ch-name{font-family:DM Sans,sans-serif;font-weight:600;font-size:1.02rem}.pub-ch-badge{font-family:DM Sans,sans-serif;font-weight:600;font-size:.72rem;color:var(--pub-accent);background:var(--pub-accent-bg);padding:4px 11px;border-radius:100px;white-space:nowrap}.pub-ch-caret{color:var(--gray-400)}.pub-ch-row:hover .pub-ch-caret{color:var(--pub-accent)}.pub-faq{display:grid;gap:10px}.pub-faq .pub-eli5{background:#fff;border-radius:12px;padding:18px 22px;box-shadow:0 1px 3px #2c2c2c0a}.pub-faq summary{color:var(--charcoal);font-size:.98rem}.pub-faq summary:before{color:var(--ember)}.pub-final-cta{background:linear-gradient(135deg,var(--charcoal) 0%,#3a3a3a 100%);color:var(--cream);border-radius:24px;padding:56px 44px;text-align:center}.pub-final-cta h2{color:var(--cream)}.pub-final-cta p{color:#d8d0c4;max-width:56ch;margin:0 auto 28px}.pub-final-cta .pub-btn-primary{justify-content:center}@media(max-width:720px){.pub-hero{flex-direction:column;align-items:flex-start;padding:32px 24px}}@media(max-width:600px){.pub{padding:24px 16px 56px}.pub h2{font-size:1.35rem}.pub-panel{padding:28px 22px}.pub-final-cta{padding:40px 24px}.pub-ch-row{grid-template-columns:28px 26px 1fr auto;gap:10px}.pub-ch-caret{display:none}}