:root{color-scheme:light;--ink:#0b1f3a;--muted:#667085;--paper:#f7f9fc;--accent:#c99a2e;--line:#d9dee8;--gold:#c99a2e;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;color:var(--ink);background:var(--paper)}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,select{touch-action:manipulation}button,a{ -webkit-tap-highlight-color:transparent}a{color:inherit}button{cursor:pointer}button:focus-visible,a:focus-visible,select:focus-visible{outline:3px solid #bc713f;outline-offset:4px}header{max-width:1120px;margin:auto;padding:24px 30px;display:flex;align-items:center;gap:20px;border-bottom:1px solid var(--line)}.brand{text-decoration:none;display:flex;align-items:center;gap:12px;font-size:13px;font-weight:800;letter-spacing:2px}.brand small{display:block;font-size:8px;letter-spacing:2.4px;margin-top:5px}.mark{background:var(--ink);color:var(--accent);border-radius:12px;padding:0 12px 5px;font:42px Georgia}.edition{margin-left:auto;font-size:10px;letter-spacing:1.5px;color:var(--muted)}.icon{border:1px solid var(--line);background:none;border-radius:50%;width:40px;height:40px}main{max-width:1060px;margin:auto;padding:42px 24px 120px}.eyebrow{text-transform:uppercase;font-size:10px;letter-spacing:2px;font-weight:700;color:var(--muted)}h1{font:normal clamp(36px,6vw,56px)/1.08 Georgia,serif;letter-spacing:-1.8px;margin:14px 0}h2{font:normal 28px Georgia;margin:0 0 12px}h3{font-size:16px;line-height:1.5;margin:0 0 8px}p{line-height:1.65;color:var(--muted);font-size:14px}.hero{display:grid;grid-template-columns:1.2fr 1fr;gap:32px;margin-bottom:32px}.hero p{max-width:420px}.badge{display:inline-flex;font-size:10px;letter-spacing:.8px;gap:6px;align-items:center;border-radius:30px;padding:7px 10px;background:#e8f0f7}.hero-art{background:#e8f0f7;border-radius:22px;position:relative;min-height:240px;overflow:hidden}.hero-art small{position:absolute;bottom:20px;left:24px;color:#526b81;font-size:9px;letter-spacing:2px}.hero-art svg{width:100%;height:250px}.grid{display:grid;grid-template-columns:1.35fr 1fr;gap:22px}.card{background:#ffffff;border:1px solid var(--line);border-radius:20px;padding:25px}.practice{background:var(--ink);color:#ffffff;border-color:var(--ink)}.practice .eyebrow,.practice p{color:#d9e3f2}.row{display:flex;align-items:center;justify-content:space-between;gap:12px}.subtle{color:var(--muted);font-size:12px}.segments{display:flex;gap:6px;margin:16px 0}.segments button{border:1px solid #607b9c;background:transparent;color:inherit;padding:11px 0;flex:1;border-radius:9px;min-height:44px}.segments button.selected{background:var(--accent);color:var(--ink);border-color:var(--accent);font-weight:700}.primary{display:block;width:100%;border:0;border-radius:10px;background:var(--accent);color:var(--ink);font-weight:700;min-height:52px;padding:14px 18px;text-align:center}.secondary{border:1px solid var(--line);border-radius:10px;background:transparent;padding:12px 16px;min-height:44px;color:var(--ink)}.practice select{background:#132f52;color:white;border-color:#607b9c}label{font-size:12px;display:block}select{width:100%;border:1px solid var(--line);border-radius:8px;padding:11px;margin:8px 0 16px;background:#ffffff;color:var(--ink);min-height:44px}.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:22px 0}.metric strong{display:block;font:32px Georgia}.metric span{font-size:10px;color:var(--muted)}.bar{height:5px;background:#e3e9f1;border-radius:5px;overflow:hidden;margin:10px 0}.bar i{display:block;background:#2486b2;height:100%}.section-label{margin:30px 0 16px}.topic{padding:17px 0;border-top:1px solid var(--line)}.topic button{border:0;background:transparent;text-align:left;color:var(--ink);width:100%;min-height:44px}.topic strong{font-size:13px}.topic small{color:var(--muted)}.callout{border-left:3px solid #c99a2e;padding:8px 15px;margin:24px 0;color:#74570f;background:#faf2dc;font-size:12px;line-height:1.65;border-radius:0 8px 8px 0}nav{position:fixed;bottom:0;left:0;right:0;display:flex;justify-content:center;gap:55px;border-top:1px solid var(--line);background:#f7f9fcf5;backdrop-filter:blur(12px);padding:12px 16px calc(12px + env(safe-area-inset-bottom));z-index:10}nav a{text-align:center;text-decoration:none;font-size:20px;color:#667085;min-width:42px}nav a span{display:block;font-size:9px;letter-spacing:.5px;margin-top:4px}nav a.active{color:var(--ink);font-weight:800}.quiz{max-width:690px;margin:auto}.question{font:normal 27px/1.35 Georgia;margin:25px 0}.option{display:flex;gap:15px;align-items:center;text-align:left;width:100%;min-height:62px;padding:15px;border:1px solid var(--line);border-radius:12px;background:#ffffff;color:var(--ink);margin:10px 0;line-height:1.5}.option .letter{border:1px solid var(--line);border-radius:7px;padding:4px 9px;font:12px monospace}.option.correct{background:#e4eed5;border-color:#819c54}.option.wrong{background:#f9e6de;border-color:#ba7156}.option:disabled{opacity:1;cursor:default}.feedback{border:1px solid #b7c99f;background:#edf3e5;padding:22px;border-radius:15px;margin:22px 0}.feedback p{color:#40573d}.feedback a{font-size:12px}.feedback .primary{margin-top:22px;background:var(--ink);color:white}.diagram{background:#e8f0f7;border-radius:15px;margin:18px 0;padding:16px}.diagram svg{width:100%;height:210px}.diagram summary{font-size:11px;color:var(--muted)}.timer{font:15px monospace}.source{padding:20px 0;border-bottom:1px solid var(--line)}.source a{font-size:13px}.source p{margin:5px 0}details p{font-size:12px}.empty{padding:28px 0}#notice{position:fixed;top:85px;left:50%;transform:translateX(-50%);background:var(--ink);color:white;padding:0;border-radius:12px;z-index:30;max-width:90%;font-size:13px}#notice.show{padding:16px 22px}.link{background:none;border:0;color:var(--ink);text-decoration:underline;min-height:44px}.results{margin-top:22px}.result-item{padding:16px 0;border-bottom:1px solid var(--line)}.result-item p{margin:6px 0}footer{font-size:10px;color:var(--muted);margin-top:35px}.two{display:grid;grid-template-columns:1fr 1fr;gap:16px}@media(max-width:650px){header{padding:18px 20px}.edition{font-size:8px;max-width:90px;line-height:1.6}.brand{font-size:11px}.mark{font-size:35px}main{padding:28px 20px 115px}.hero{grid-template-columns:1fr;gap:14px;margin-bottom:22px}.hero h1{font-size:43px}.hero-art{min-height:175px}.hero-art svg{height:190px}.hero-art small{bottom:14px}.grid{grid-template-columns:1fr;gap:16px}.card{padding:22px}nav{gap:0;justify-content:space-around}.question{font-size:25px}.two{gap:10px}h1{font-size:40px}.metrics{gap:5px}.source{overflow-wrap:anywhere}}@media(prefers-reduced-motion:no-preference){.card{animation:rise .3s ease-out}@keyframes rise{from{opacity:.5;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}
.hero-art svg>text:last-child{display:none}

/* HomeSmarts by ACD: existing navy / gold system with the original HS mark. */
header{background:var(--ink);color:white;border-bottom:3px solid #c99a2e;max-width:none;padding-left:max(20px,calc((100vw - 1060px)/2));padding-right:max(20px,calc((100vw - 1060px)/2))}
.brand{letter-spacing:-.4px;font-size:22px;font-weight:700;gap:12px}.brand small{font-size:10px;letter-spacing:2px;color:#e5c575;text-transform:none;margin-top:5px}.brand-logo{display:block;flex:0 0 58px;background:white;border-radius:12px;object-fit:contain;padding:2px}.edition{color:#f4e7bf;letter-spacing:1.6px;font-size:10px;font-weight:650}.edition small{display:block;font-size:8px;color:#d9e3f2;margin-top:6px;letter-spacing:1px}.icon{color:#f4e7bf;border-color:#607b9c}.hero .badge{background:#e3edf6;color:#195e80}.practice{background:linear-gradient(135deg,#0b1f3a,#132f52)}.primary{background:#c99a2e}.segments button.selected{background:#f4e7bf;border-color:#f4e7bf}.hero-art{border:1px solid #cdddeb;background:linear-gradient(135deg,#eaf2f8,#e0edf5)}nav a.active{color:#0b1f3a}nav a.active span{text-decoration:underline;text-decoration-color:#c99a2e;text-decoration-thickness:2px;text-underline-offset:5px}.bar i{background:linear-gradient(90deg,#175c89,#269ac1)}
@media(max-width:650px){header{padding-top:14px;padding-bottom:14px;gap:10px}.brand{font-size:18px;gap:8px}.brand-logo{width:49px;height:49px;flex-basis:49px}.brand small{font-size:8px}.edition{font-size:8px;max-width:102px}.edition small{font-size:6.5px;line-height:1.5}.icon{width:34px;height:34px;flex-shrink:0}.hero-art{min-height:165px}.hero-art svg{height:175px}}