@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Libre+Caslon+Display&display=swap');
*{box-sizing:border-box;margin:0;padding:0}:root{--ink:#0c2038;--navy:#10243e;--navy2:#183653;--gold:#d4a742;--paper:#f7f4ed;--mist:#eef3f5;--line:#d7e0e5;--muted:#5c6876;--white:#fff;--red:#8f3138;--shadow:0 16px 45px rgba(16,36,62,.10)}html{scroll-behavior:smooth}body{font-family:'DM Sans',Arial,sans-serif;color:var(--ink);background:#fff;line-height:1.58;-webkit-font-smoothing:antialiased}a{color:var(--navy);text-underline-offset:3px}header{position:sticky;top:0;z-index:30;background:rgba(16,36,62,.97);border-bottom:1px solid rgba(255,255,255,.09);padding:16px 5%}.nav{max-width:1180px;margin:auto;display:flex;justify-content:space-between;align-items:center}.brand{color:#fff;text-decoration:none;font-size:25px;font-weight:700;letter-spacing:-.5px}.brand span{color:var(--gold)}.nl{color:#edf3f7;text-decoration:none;margin-left:24px;font-size:14px;font-weight:600}.nl:hover{color:var(--gold)}.wrap{max-width:1180px;margin:auto;padding:76px 28px}.hero{color:#fff;background:radial-gradient(circle at 82% 30%,#284b68 0,transparent 32%),linear-gradient(130deg,#0b1d33,#10243e 66%,#172f48);border-bottom:6px solid var(--gold)}.hero .wrap{padding-top:96px;padding-bottom:98px}.hero h1,h1{font-family:'Libre Caslon Display',Georgia,serif;font-size:clamp(2.45rem,5vw,4.4rem);max-width:920px;line-height:1.04;letter-spacing:-.035em;margin:14px 0 22px}.hero .sub{font-size:1.16rem;color:#dae5ed;max-width:740px}.sub{max-width:760px;color:var(--muted);font-size:1.08rem}.btn{display:inline-flex;align-items:center;justify-content:center;background:var(--gold);color:var(--navy);padding:14px 20px;border-radius:6px;text-decoration:none;font-weight:700;margin:24px 10px 0 0;border:1px solid var(--gold);transition:.18s transform,.18s box-shadow}.btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px #0002}.btn.ghost{background:#fff;border:1px solid var(--line)}.hero .btn.ghost{background:transparent;color:#fff;border-color:#8295a8}.proof-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:30px}.proof-pill,.tag{display:inline-block;background:#1d3b57;color:#edf4f7;padding:7px 11px;border-radius:999px;font-size:12px;font-weight:700;letter-spacing:.02em}.tag{background:#e8eef1;color:var(--navy)}.section-kicker{color:#a57920;font-weight:700;text-transform:uppercase;letter-spacing:.11em;font-size:12px}section h2{font-family:'Libre Caslon Display',Georgia,serif;font-size:clamp(2rem,4vw,3rem);line-height:1.08;margin-bottom:15px;color:var(--navy);letter-spacing:-.025em}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:22px;margin-top:30px}.card,.buybox{border:1px solid var(--line);border-radius:12px;padding:26px;background:#fff;box-shadow:0 5px 20px rgba(16,36,62,.055);transition:.2s transform,.2s box-shadow,.2s border}.card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#becbd3}.card h3{font-size:20px;line-height:1.25}.card h3 a{text-decoration:none}.price{font-family:'Libre Caslon Display',Georgia,serif;font-size:27px;font-weight:700;color:var(--navy);margin:11px 0}.go{display:inline-block;margin-top:15px;font-weight:700;text-decoration:none;color:var(--red)}.feature-card{display:flex;gap:22px}.feature-card .copy{flex:1}.feature-card .visual{max-width:220px}.feature-card img{max-width:100%;border-radius:8px}.crumbs{font-size:13px;color:var(--muted);margin-top:10px}.split{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(280px,1fr);gap:52px;align-items:start}.tick{padding-left:22px;margin-top:18px}.tick li{margin:9px 0}.buybox{position:sticky;top:92px;background:linear-gradient(180deg,#fff,#f7f9fa)}.buybox .price{font-size:48px;color:var(--red)}.faq details{border-top:1px solid var(--line);padding:17px 0}.faq summary{cursor:pointer;font-weight:700}.faq p{color:var(--muted);margin-top:9px}footer{background:#0b1d33;color:#c9d3e0}.foot{max-width:1180px;margin:auto;padding:48px 28px;display:flex;gap:90px}.col a{display:block;color:#fff;margin:8px 0}.note{font-size:12px;color:#586776;background:#f3f5f6;border:1px solid var(--line);padding:14px;border-radius:7px}.decision,.trust-strip{background:var(--mist)}.decision .card p,.trust-strip p,.card p{color:var(--muted);margin-top:8px}.trust-strip .grid{grid-template-columns:repeat(3,1fr)}section:nth-of-type(even):not(.hero):not(.decision):not(.trust-strip){background:linear-gradient(180deg,#fff,#fafbfb)}
@media(max-width:760px){header{position:static;padding:14px 20px}.nav{display:block}.nav div{display:flex;gap:14px;overflow-x:auto;margin-top:10px;padding-bottom:2px}.nl{margin:0;white-space:nowrap}.wrap{padding:52px 20px}.hero .wrap{padding-top:68px;padding-bottom:72px}.hero h1,h1{font-size:2.65rem}.hero .sub{font-size:1.03rem}.hero .btn{display:flex;width:100%;margin-right:0}.split{grid-template-columns:1fr;gap:28px}.buybox{position:static}.feature-card{display:block}.feature-card .visual{max-width:none;margin-top:20px}.foot{display:block;padding:42px 20px}.col{margin-bottom:22px}.trust-strip .grid{grid-template-columns:1fr}.grid{grid-template-columns:1fr}.proof-pill{font-size:11px}.card{padding:22px}}
/* Product-detail cleanup: clearer hierarchy, tighter scan path, accessible focus */
main.wrap section:first-of-type{padding-top:clamp(38px,6vw,72px)}
main.wrap .split{align-items:start}
main.wrap .tick{display:grid;gap:9px;margin:24px 0}
main.wrap .tick li{line-height:1.45}
main.wrap .buybox{border:1px solid rgba(187,145,52,.25);box-shadow:0 18px 45px rgba(24,32,48,.08)}
main.wrap .btn{margin-top:8px}
a:focus-visible,button:focus-visible{outline:3px solid #d6a53d;outline-offset:3px;border-radius:4px}
@media(max-width:720px){main.wrap section:first-of-type{padding-top:30px}main.wrap .btn{display:block;width:100%;text-align:center;margin:10px 0}.buybox{margin-top:10px}}

/* Catalog visual merchandising */
#topics .grid,#firms .grid,#collections .grid{grid-template-columns:repeat(auto-fit,minmax(245px,1fr))}
#topics .card,#firms .card,#collections .card{padding:0 0 24px;overflow:hidden;display:flex;flex-direction:column}
#topics .card>:not(.product-thumb),#firms .card>:not(.product-thumb),#collections .card>:not(.product-thumb){margin-left:24px;margin-right:24px}
.product-thumb{display:block;aspect-ratio:16/10;overflow:hidden;background:linear-gradient(135deg,#10243e,#244661);margin-bottom:22px}
.product-thumb img{width:100%;height:100%;object-fit:cover;object-position:center;transition:transform .35s ease}
.card:hover .product-thumb img{transform:scale(1.025)}
.product-visual{padding:18px;position:sticky;top:92px;overflow:hidden}
.product-visual>img{display:block;width:100%;aspect-ratio:1;object-fit:cover;border-radius:8px}
.product-visual .scope-preview{margin-top:14px;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.product-visual .scope-preview img{display:block;width:100%;height:auto}
.product-visual .price{margin-top:18px}
@media(max-width:760px){.product-visual{position:static;display:grid;grid-template-columns:1fr 1fr;gap:10px}.product-visual .scope-preview{margin-top:0}.product-visual .price,.product-visual p{grid-column:1/-1}#topics .grid,#firms .grid,#collections .grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}#topics .card,#firms .card,#collections .card{padding-bottom:18px}#topics .card>:not(.product-thumb),#firms .card>:not(.product-thumb),#collections .card>:not(.product-thumb){margin-left:14px;margin-right:14px}.product-thumb{margin-bottom:14px}.card h3{font-size:16px}.card p,.go{font-size:13px}}

/* Evidence-led value story */
.moat{margin-top:8px;padding:44px;border-radius:18px;background:linear-gradient(135deg,#0d223b,#173956);color:#fff}
.moat h2{color:#fff;max-width:720px}.moat .section-kicker{color:#e0b54b}.moat .grid{grid-template-columns:repeat(3,1fr)}.moat .card{box-shadow:none;border-color:rgba(255,255,255,.18);background:rgba(255,255,255,.07)}.moat .card h3{color:#fff}.moat .card p{color:#dce8ef}
@media(max-width:760px){.moat{padding:28px 20px}.moat .grid{grid-template-columns:1fr}}

/* Process-led product detail and preview */
.process-grid,.sample-grid,.inside-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:24px}.process-step,.sample-grid article,.inside-grid>div{border:1px solid var(--line,#d9dee5);border-radius:18px;padding:24px;background:#fff}.process-step span,.sample-grid article>span{display:inline-block;color:#9a6b13;font-weight:800;font-size:.78rem;letter-spacing:.08em;text-transform:uppercase}.process-step h3,.sample-grid h3,.inside-grid h3{margin:10px 0 8px}.sample-grid details{margin-top:16px;border-top:1px solid var(--line,#d9dee5);padding-top:12px}.sample-grid summary{cursor:pointer;font-weight:750}.inside-grid{grid-template-columns:1fr 1fr}.inside-grid dt{font-weight:800;margin-top:14px}.inside-grid dd{margin:4px 0 0;color:var(--muted,#596574)}.process-section>p,.sample-section>p,.inside-section>p{max-width:820px;color:var(--muted,#596574)}@media(max-width:760px){.process-grid,.sample-grid,.inside-grid{grid-template-columns:1fr}.process-step,.sample-grid article,.inside-grid>div{padding:20px}}
/* 2026-09-17 premium direction */
:root{--ink:#09192d;--navy:#091a30;--navy2:#132d49;--gold:#d8aa42;--paper:#f6f1e7;--mist:#eef2f4;--line:#cfdae2;--red:#9f3038;--shadow:0 22px 65px rgba(3,18,34,.16)}
body{background:#fbfcfd}.hero{background:radial-gradient(circle at 74% 26%,rgba(52,91,123,.62),transparent 30%),radial-gradient(circle at 85% 88%,rgba(216,170,66,.12),transparent 25%),linear-gradient(132deg,#061426,#0c223b 62%,#16334f);border-bottom:0;overflow:hidden}.hero .wrap{position:relative;padding-top:104px;padding-bottom:76px}.hero h1{font-size:clamp(3.2rem,6.4vw,5.7rem);max-width:1020px;line-height:.96}.hero .sub{max-width:820px;font-size:1.08rem;line-height:1.65}.proof-pill{background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.14);backdrop-filter:blur(10px);padding:9px 13px}.workbook-stage{margin-top:56px;background:#fff;color:var(--ink);border:1px solid #ffffff24;border-radius:16px;overflow:hidden;box-shadow:0 34px 90px #0008;transform:perspective(1100px) rotateX(2deg);max-width:1000px}.sheet-bar{display:flex;justify-content:space-between;background:#e9edf0;padding:12px 18px;font-size:12px;border-bottom:1px solid #cbd4da}.sheet-bar span{background:#fff;padding:5px 10px;border-radius:5px;font-weight:800}.sheet-bar b{color:#536273}.sheet-grid{display:grid;grid-template-columns:1.05fr 1fr 1fr 2.7fr 1.25fr;font-size:12px}.sheet-grid>div{padding:12px 14px;border-right:1px solid #e0e5e8;border-bottom:1px solid #e0e5e8}.sheet-head{font-weight:800;background:#102a45;color:#fff}.redacted{position:relative;background:linear-gradient(90deg,#e6ebef 10%,#f2f5f7 10% 18%,#dfe6ea 18% 55%,#f2f5f7 55% 63%,#e2e8ec 63%)}.workbook-stage>p{background:#f8fafb;color:#657380;padding:11px 16px;font-size:11px}.decision{background:linear-gradient(180deg,#f7f3ea,#fff)}.decision .wrap{padding-top:84px;padding-bottom:90px}.decision .grid{grid-template-columns:repeat(3,1fr)}.decision .card{min-height:250px;padding:34px;border:1px solid #d6dee3;box-shadow:0 18px 44px rgba(11,34,58,.08);position:relative;overflow:hidden}.decision .card:before{content:'';position:absolute;left:0;top:0;width:100%;height:5px;background:var(--gold)}.decision .card h3{font-family:'Libre Caslon Display',Georgia,serif;font-size:1.75rem;color:var(--navy)}.decision .go{position:absolute;bottom:30px}.product-thumb{background:#ede7dc}.card{border-radius:14px}#topics,#firms,#collections{scroll-margin-top:76px}section h2{font-size:clamp(2.25rem,4.5vw,3.5rem)}
@media(max-width:760px){.hero .wrap{padding-top:62px}.hero h1{font-size:3rem}.workbook-stage{margin-top:38px;overflow-x:auto}.sheet-grid{min-width:760px}.decision .grid{grid-template-columns:1fr}.decision .card{min-height:220px}.decision .go{position:static}.sheet-bar b{display:none}}
/* Open worked-answer showcases */
.answer-showcase{margin-top:14px;padding:48px;border-radius:22px;background:linear-gradient(145deg,#07192d,#143653);color:#fff;box-shadow:0 28px 70px rgba(5,24,43,.2)}.answer-showcase h2{color:#fff;max-width:760px}.answer-showcase .section-kicker{color:#e3b84d}.showcase-lead{color:#d7e3ec;max-width:700px}.showcase-list{display:grid;gap:26px;margin-top:32px}.showcase-answer{background:#fff;color:var(--ink);border:1px solid rgba(255,255,255,.2);border-radius:18px;padding:34px;box-shadow:0 18px 45px rgba(0,0,0,.2)}.answer-top{display:flex;align-items:center;gap:14px;justify-content:space-between}.answer-num{font-family:'Libre Caslon Display',Georgia,serif;color:var(--gold);font-size:2rem}.showcase-answer h3{font-family:'Libre Caslon Display',Georgia,serif;font-size:2rem;line-height:1.08;margin:16px 0 8px}.answer-question{font-size:1.08rem;font-weight:700;line-height:1.48;border-left:4px solid var(--gold);padding:12px 16px;background:#f7f3ea}.answer-dek{color:var(--muted);margin:18px 0}.answer-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.answer-steps>div,.answer-equation,.answer-math>div{background:#eef3f5;border:1px solid #d7e0e5;border-radius:10px;padding:16px}.answer-steps b,.answer-equation span,.answer-math span{display:block;color:#936914;text-transform:uppercase;font-size:.72rem;letter-spacing:.08em}.answer-steps p{margin-top:6px}.answer-close{border-top:1px solid var(--line);padding-top:16px;margin-top:18px}@media(max-width:760px){.answer-showcase{padding:30px 20px;margin-left:-20px;margin-right:-20px;border-radius:0}.showcase-answer{padding:22px 18px}.showcase-answer h3{font-size:1.65rem}.answer-top{align-items:flex-start}.answer-steps,.answer-math{grid-template-columns:1fr}.answer-question{font-size:1rem}}
/* Related free-practice paths */
.related-drills{margin-top:24px;padding-top:38px;border-top:1px solid var(--line)}.related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:20px 0}.related-link{display:flex;flex-direction:column;gap:5px;padding:20px;border:1px solid var(--line);border-radius:12px;background:#fff;text-decoration:none;box-shadow:0 5px 18px rgba(16,36,62,.05)}.related-link span{font-size:.72rem;color:#9a6b13;text-transform:uppercase;letter-spacing:.08em;font-weight:800}.related-link strong{line-height:1.3}.related-link:hover{border-color:var(--gold)}@media(max-width:760px){.related-grid{grid-template-columns:1fr}.related-link{padding:18px}}

.drill-meta{display:flex;gap:8px;flex-wrap:wrap}.drill-meta span{font-size:12px;font-weight:700;background:var(--mist);padding:5px 9px;border-radius:999px}

/* 2026-09-18 visual polish: clearer rhythm, tactile cards, and phone-first navigation */
body{background:linear-gradient(180deg,#fbfcfd 0,#fff 28%,#f8fafb 100%)}
header{box-shadow:0 1px 0 rgba(255,255,255,.06),0 10px 30px rgba(3,18,34,.08)}
.nav>div{display:flex;align-items:center}
.nl{position:relative;padding:8px 0}
.nl:after{content:'';position:absolute;left:0;right:100%;bottom:2px;height:2px;background:var(--gold);transition:right .2s ease}
.nl:hover:after,.nl:focus-visible:after{right:0}
.wrap>section+section{margin-top:14px}
.card,.buybox,.process-step,.sample-grid article,.inside-grid>div,.related-link{box-shadow:0 8px 28px rgba(8,28,48,.065)}
.card h3,.related-link strong{letter-spacing:-.01em}
.btn{min-height:48px;box-shadow:0 8px 22px rgba(167,119,18,.12)}
.btn.ghost{box-shadow:none}
.product-visual>img,.product-visual .scope-preview img{background:var(--paper)}
.note{line-height:1.55}
@media(max-width:760px){
 header{position:sticky;padding:13px 18px}.brand{font-size:22px}.nav div{gap:4px;margin:8px -6px -2px;padding:0 6px 4px;scrollbar-width:none}.nav div::-webkit-scrollbar{display:none}.nl{font-size:12px;padding:6px 8px;border-radius:999px;background:rgba(255,255,255,.055)}
 .wrap{padding:48px 20px}.hero .wrap{padding-top:56px;padding-bottom:58px}.hero h1,h1{font-size:clamp(2.45rem,12vw,3rem);line-height:1.01}.hero .sub,.sub{line-height:1.65}
 section h2{font-size:2rem}.section-kicker{font-size:11px}.proof-row{gap:7px}.proof-pill,.tag{padding:7px 10px}
 .decision .wrap{padding-top:58px;padding-bottom:62px}.decision .card{min-height:0;padding:28px}.decision .card h3{font-size:1.6rem}
 #topics .grid,#firms .grid,#collections .grid{gap:14px}#topics .card,#firms .card,#collections .card{border-radius:15px}#topics .card>:not(.product-thumb),#firms .card>:not(.product-thumb),#collections .card>:not(.product-thumb){margin-left:15px;margin-right:15px}.card h3{font-size:16px;line-height:1.32}.product-thumb{aspect-ratio:1/1;margin-bottom:15px}
 .product-visual{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:12px;padding:14px}.product-visual>img,.product-visual .scope-preview{flex:0 0:78%;scroll-snap-align:center}.product-visual .scope-preview img{height:100%;object-fit:cover}.product-visual .price,.product-visual>p{flex-basis:100%;min-width:100%}
 .answer-showcase{padding:32px 18px}.showcase-list{gap:18px}.showcase-answer{padding:22px 18px;border-radius:16px}.answer-steps>div,.answer-equation,.answer-math>div{padding:14px}
 .related-drills{padding-top:30px}.related-grid{gap:10px}.foot{padding-top:38px;padding-bottom:38px}
}
/* Keep worked-answer panels dark even when they fall on an even section. */
.answer-showcase{background:linear-gradient(145deg,#07192d,#143653)!important}
@media(max-width:760px){
 .product-visual{display:grid;grid-template-columns:1fr 1fr;overflow:visible;gap:10px;padding:14px}
 .product-visual>img,.product-visual .scope-preview{width:100%;min-width:0;scroll-snap-align:none}
 .product-visual .price,.product-visual>p{grid-column:1/-1;min-width:0}
}
@media(max-width:760px){
 .product-visual{display:block;padding:14px}.product-visual>img{width:100%;height:auto;aspect-ratio:1;margin:0}.product-visual .scope-preview{width:100%;margin:12px 0 0}.product-visual .scope-preview img{width:100%;height:auto;object-fit:contain}.product-visual .price{margin-top:16px}.product-visual>p{min-width:0}
}
/* Worked-answer math blocks */
.answer-math{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.answer-math b{display:block;margin:9px 0;font-size:.9rem}.answer-math strong{display:block;font-family:'Libre Caslon Display',Georgia,serif;font-size:1.7rem;color:var(--red);line-height:1.1}
@media(max-width:760px){.answer-math{grid-template-columns:1fr}.answer-math b{overflow-wrap:anywhere}.answer-math strong{margin-top:7px}}

/* 2026-09-19 responsive UI system: editorial desktop, touch-first mobile */
:root{--shell:1240px;--reading:760px;--radius-sm:12px;--radius-md:18px;--radius-lg:28px;--space-section:clamp(72px,8vw,112px);--shadow-soft:0 14px 42px rgba(8,28,48,.075);--shadow-lift:0 26px 70px rgba(5,22,39,.14)}
html{font-size:16px}body{font-size:16px;line-height:1.65}p{max-width:72ch}header{padding:14px max(24px,calc((100vw - var(--shell))/2));backdrop-filter:blur(18px);background:rgba(9,26,48,.94)}.nav{max-width:var(--shell)}.brand{font-size:24px;letter-spacing:-.04em}.nav>div{gap:6px}.nl{margin:0;padding:9px 13px;border-radius:999px}.nl:hover{background:rgba(255,255,255,.07)}.nl:after{display:none}
.wrap{max-width:var(--shell);padding-left:32px;padding-right:32px}.hero .wrap{padding-top:clamp(96px,10vw,142px);padding-bottom:clamp(86px,9vw,124px)}.hero h1{max-width:1080px;font-size:clamp(4rem,7vw,6.6rem);letter-spacing:-.055em}.hero .sub{font-size:clamp(1.08rem,1.5vw,1.3rem);max-width:760px}.hero .proof-row{margin-top:34px}.hero .btn{margin-top:30px}.workbook-stage{margin-top:70px;border-radius:22px;max-width:1120px}
section>.wrap{padding-top:var(--space-section);padding-bottom:var(--space-section)}section h2{max-width:900px;letter-spacing:-.04em}.section-kicker{margin-bottom:12px}.sub{font-size:clamp(1.05rem,1.35vw,1.18rem);line-height:1.7}.btn{min-height:52px;padding:14px 23px;border-radius:10px;gap:8px}.proof-pill,.tag{padding:8px 12px}
.decision .wrap{padding-top:var(--space-section);padding-bottom:var(--space-section)}.decision .grid{gap:24px}.decision .card{min-height:270px;border-radius:var(--radius-md)}
#topics .grid,#firms .grid,#collections .grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:26px}#topics .card,#firms .card,#collections .card{border-radius:var(--radius-md);box-shadow:var(--shadow-soft)}#topics .card:hover,#firms .card:hover,#collections .card:hover{box-shadow:var(--shadow-lift);transform:translateY(-5px)}.product-thumb{aspect-ratio:16/10;margin-bottom:24px}.card h3{font-size:1.22rem;line-height:1.3}.card p{line-height:1.55}
main.wrap{padding-top:54px;padding-bottom:100px}main.wrap>.crumbs{margin:0 0 28px}main.wrap>section{padding:clamp(42px,5vw,68px) 0;border-bottom:1px solid rgba(207,218,226,.72);margin:0}main.wrap>section:first-of-type{padding-top:26px}main.wrap>section:last-of-type{border-bottom:0}.split{grid-template-columns:minmax(0,1.45fr) minmax(360px,.75fr);gap:clamp(50px,7vw,92px)}.split>div>h1{max-width:780px}.product-visual{top:98px;border-radius:var(--radius-md);padding:20px;box-shadow:var(--shadow-lift)}.product-visual>img,.product-visual .scope-preview{border-radius:12px}.process-grid,.sample-grid{gap:22px}.process-step,.sample-grid article,.inside-grid>div{border-radius:var(--radius-md);padding:28px;box-shadow:var(--shadow-soft)}.moat{padding:clamp(42px,5vw,64px);border-radius:var(--radius-lg)}
.drill-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.drill-card{border-radius:var(--radius-md);padding:28px;box-shadow:var(--shadow-soft)}.drill-card h2{font-size:1.2rem}.answer-showcase{padding:clamp(44px,5vw,68px);border-radius:var(--radius-lg);margin:28px 0;box-shadow:var(--shadow-lift)}.showcase-list{gap:30px}.showcase-answer{border-radius:22px;padding:clamp(28px,4vw,44px)}.answer-question{border-radius:0 12px 12px 0}.related-link{padding:24px;border-radius:var(--radius-md)}
.foot{max-width:var(--shell);padding:62px 32px;justify-content:space-between}.foot .col{max-width:420px}
@media(min-width:1280px){main.wrap>.crumbs,main.wrap>section:not(.answer-showcase):not(.moat){padding-left:26px;padding-right:26px}.answer-showcase,.moat{margin-left:0;margin-right:0}}
@media(max-width:980px){#topics .grid,#firms .grid,#collections .grid{grid-template-columns:repeat(2,minmax(0,1fr))}.split{grid-template-columns:1fr;gap:36px}.product-visual{position:static;max-width:680px}.drill-list{grid-template-columns:1fr}.decision .grid{grid-template-columns:1fr}.decision .card{min-height:210px}}
@media(max-width:760px){html{font-size:16px}body{line-height:1.62}header{padding:12px 16px}.nav{display:flex;flex-direction:column;align-items:flex-start}.nav>div{width:100%;gap:7px;margin:8px 0 0;padding:0 0 3px;scroll-snap-type:x proximity}.nl{min-height:40px;display:inline-flex;align-items:center;padding:8px 12px;background:rgba(255,255,255,.065);scroll-snap-align:start}.brand{font-size:22px}.wrap{padding-left:18px;padding-right:18px}.hero .wrap{padding-top:62px;padding-bottom:70px}.hero h1,h1{font-size:clamp(2.65rem,12vw,3.45rem);line-height:.98;letter-spacing:-.05em}.hero .sub,.sub{font-size:1.05rem;line-height:1.65}.hero .btn,.btn{min-height:52px;border-radius:10px}.proof-row{gap:8px}.workbook-stage{margin-top:42px;border-radius:15px}.section-kicker{letter-spacing:.095em}.wrap>section+section{margin-top:0}section>.wrap{padding-top:64px;padding-bottom:64px}section h2{font-size:2.25rem;line-height:1.03}.decision .wrap{padding-top:64px;padding-bottom:64px}.decision .card{padding:26px;min-height:0}.decision .go{margin-top:22px}.grid{gap:16px}.card{border-radius:16px}.card:hover{transform:none}#topics .grid,#firms .grid,#collections .grid{grid-template-columns:1fr;gap:18px}#topics .card,#firms .card,#collections .card{padding-bottom:22px}#topics .card>:not(.product-thumb),#firms .card>:not(.product-thumb),#collections .card>:not(.product-thumb){margin-left:20px;margin-right:20px}.product-thumb{aspect-ratio:16/10;margin-bottom:20px}.card h3{font-size:1.18rem}.card p,.go{font-size:.95rem}main.wrap{padding-top:34px;padding-bottom:72px}main.wrap>.crumbs{margin-bottom:18px}main.wrap>section,main.wrap>section:first-of-type{padding:38px 0}.split{gap:30px}.tick{padding-left:20px}.product-visual{padding:14px;border-radius:16px}.process-grid,.sample-grid,.inside-grid{gap:14px}.process-step,.sample-grid article,.inside-grid>div{padding:22px;border-radius:16px}.moat{margin-left:-18px;margin-right:-18px;padding:38px 18px;border-radius:0}.answer-showcase{margin-left:-18px;margin-right:-18px;padding:38px 18px;border-radius:0}.showcase-answer{padding:24px 18px;border-radius:17px}.showcase-answer h3{font-size:1.8rem}.answer-question{padding:14px;font-size:1rem}.drill-card{padding:22px 19px;border-radius:16px}.drill-card h2{font-size:1.08rem}.related-link{min-height:94px;padding:20px}.foot{padding:48px 18px}.foot .col+ .col{margin-top:28px}}
@media(max-width:390px){.nl{font-size:11px;padding:7px 10px}.hero h1,h1{font-size:2.55rem}.proof-pill,.tag{font-size:10px}.showcase-answer h3{font-size:1.65rem}}

/* 2026-09-19 image integrity hotfix: preserve complete proof artwork */
.product-visual{overflow:visible}
.product-visual>img{display:block;width:100%;height:auto!important;aspect-ratio:auto!important;object-fit:contain!important;object-position:center;background:var(--paper)}
.product-visual .scope-preview{overflow:hidden}
.product-visual .scope-preview img{display:block;width:100%;height:auto!important;aspect-ratio:auto!important;object-fit:contain!important;object-position:center}
.product-thumb img{object-position:center}
@media(max-width:760px){.product-visual>img,.product-visual .scope-preview img{height:auto!important;aspect-ratio:auto!important;object-fit:contain!important}}
/* Legacy editorial images: honor intrinsic ratio instead of HTML height attributes. */
.interview-map img,.feature-card img,main.wrap>section>img{display:block;max-width:100%;height:auto!important;object-fit:contain}
@media(max-width:760px){.compare{max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}.compare table{min-width:680px}.compare:after{content:'Swipe to compare →';display:block;font-size:12px;color:var(--muted);margin-top:10px}.workbook-stage{max-width:100%;overflow-x:auto}}
/* September 30 editorial direction: the workbook, not decorative artwork, leads. */
body{background:#faf8f3}.editorial-hero{background:#10243a;color:#fff;border-bottom:1px solid #d7b26b}.editorial-hero .hero-layout{display:grid;grid-template-columns:minmax(0,1.04fr) minmax(0,1fr);gap:64px;align-items:center;padding-top:72px;padding-bottom:72px}.editorial-hero h1{font-family:'Libre Caslon Display',Georgia,serif;font-size:clamp(3.7rem,5.5vw,5.3rem);line-height:1.02;letter-spacing:-.035em;margin:18px 0 24px}.editorial-hero .section-kicker{color:#e4bc6a;font-size:11px}.editorial-hero .sub{font-size:1.04rem;max-width:490px;color:#d7e1e8}.hero-actions{display:flex;gap:12px;flex-wrap:wrap}.editorial-hero .btn{margin:24px 0 0;border-radius:4px;font-size:14px}.hero-facts{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:34px;padding-top:24px;border-top:1px solid #ffffff30}.hero-facts strong{display:block;font-size:27px;color:#e4bc6a;font-family:'Libre Caslon Display',Georgia,serif}.hero-facts span{display:block;font-size:11px;color:#d2dce4;margin-top:5px}.hero-footnote{font-size:11px;color:#9fb1bf;margin-top:20px}.hero-sample{color:#172d42;background:#faf7ee;border:1px solid #e4dcca;border-radius:5px;box-shadow:0 20px 65px #0003;padding:28px}.sample-bar{display:flex;justify-content:space-between;gap:10px;border-bottom:1px solid #d7cfbd;padding-bottom:17px;font-size:10px;text-transform:uppercase;letter-spacing:.065em;font-weight:700}.sample-label{font-size:11px;color:#866017;margin:20px 0 10px}.hero-sample h2{font-family:'Libre Caslon Display',Georgia,serif;font-size:2rem;color:#172d42;line-height:1.08;margin-bottom:12px;letter-spacing:-.02em}.hero-sample>p{font-size:13px;line-height:1.6}.hero-math{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:20px 0}.hero-math>div{padding:15px 10px;background:#fff;border:1px solid #e3dccc;border-radius:3px}.hero-math span{display:block;font-size:9px;color:#6b6c69;line-height:1.4}.hero-math strong{display:block;font-family:'Libre Caslon Display',Georgia,serif;font-size:1.65rem;color:#172d42;margin-top:8px;white-space:nowrap}.hero-sample .go{font-size:13px;color:#735116;margin-top:17px}.sample-bottom{display:flex;justify-content:space-between;gap:10px;border-top:1px solid #d7cfbd;padding-top:16px;margin-top:20px;font-size:10px;color:#6d746f}.sample-bottom a{font-weight:700;text-decoration:none;color:#172d42}
#firms{background:#f5f0e6!important}#firms .grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}#firms .firm-card{display:grid;grid-template-columns:92px minmax(0,1fr);align-content:start;column-gap:20px;row-gap:0;padding:24px;border:1px solid #ddd6c9;border-radius:5px;background:#fffcf7;box-shadow:none}#firms .firm-card>:not(.product-thumb){margin:0!important;grid-column:2}#firms .firm-card .product-thumb{grid-column:1;grid-row:1/5;aspect-ratio:1;align-self:start;margin:0;border:1px solid #e6dfd2;border-radius:2px}#firms .firm-card .product-thumb img{object-fit:contain;background:#f7f3e9}#firms .firm-card .firm-count{justify-self:start;font-size:10px;background:none;color:#886315;padding:0;border-radius:0;margin-bottom:8px!important}#firms .firm-card h3{font-family:'Libre Caslon Display',Georgia,serif;font-size:1.65rem;line-height:1.05;min-height:48px;margin-bottom:10px!important}#firms .firm-card .price{font-family:'DM Sans',Arial,sans-serif;font-size:13px;font-weight:700;margin-top:8px!important}#firms .firm-card p{grid-column:1/-1;margin-top:18px!important;font-size:12px;line-height:1.65}#firms .firm-card .go,#firms .firm-card .firm-free{grid-column:1/-1;font-size:12px;margin-top:15px!important;text-decoration:none;font-weight:700}#firms .firm-card .firm-free{color:#886315;margin-top:8px!important}.firm-detail main.wrap>section:first-of-type{background:#f7f3e9!important;border-radius:6px;padding:40px}.firm-detail h1{font-size:clamp(2.7rem,4.5vw,4rem);line-height:1.04;letter-spacing:-.035em}.edition-line{font-size:10px;color:#82734e;margin-bottom:18px;text-transform:uppercase;letter-spacing:.04em}.firm-detail .buybox{border-radius:4px;box-shadow:0 14px 36px #142c4010;background:#fffcf6}.firm-detail .split{grid-template-columns:minmax(0,1.25fr) minmax(310px,.8fr);gap:44px}.firm-detail .tick{font-size:14px}.firm-detail .btn{border-radius:4px}.firm-detail .process-step,.firm-detail .sample-grid article,.firm-detail .inside-grid>div{border-radius:5px;box-shadow:none;background:#fffcf7}.firm-detail h3{font-family:'Libre Caslon Display',Georgia,serif;font-size:1.7rem;line-height:1.14}.firm-detail .moat h3{font-family:'DM Sans',Arial,sans-serif;font-size:1.1rem}
@media(max-width:1080px){.editorial-hero .hero-layout{gap:30px}#firms .grid{grid-template-columns:repeat(2,minmax(0,1fr))}.firm-detail .split{grid-template-columns:1fr}.firm-detail .product-visual{max-width:460px}}
@media(max-width:760px){.editorial-hero .hero-layout{grid-template-columns:1fr;gap:28px;padding-top:38px;padding-bottom:40px}.editorial-hero h1{font-size:3.15rem;margin:12px 0 18px}.editorial-hero .sub{font-size:.96rem}.hero-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px}.editorial-hero .btn{font-size:12px;padding:12px 8px;min-height:48px;display:flex;margin-top:18px;width:auto}.hero-facts{margin-top:24px;padding-top:18px;gap:10px}.hero-facts strong{font-size:23px}.hero-facts span{font-size:10px}.hero-footnote{margin-top:14px}.hero-sample{padding:22px 18px}.hero-sample h2{font-size:1.95rem}.hero-math strong{font-size:1.5rem}.sample-bottom{flex-direction:column;gap:8px}.sample-bar{font-size:9px}#firms .grid{grid-template-columns:1fr;gap:12px}#firms .firm-card{padding:20px;grid-template-columns:90px minmax(0,1fr);column-gap:18px}#firms .firm-card h3{font-size:1.7rem;min-height:0}#firms .firm-card p{font-size:13px}#firms .firm-card .go,#firms .firm-card .firm-free{font-size:13px}.firm-detail main.wrap>section:first-of-type{padding:26px 18px}.firm-detail h1{font-size:2.6rem}.edition-line{font-size:9px;line-height:1.7}.firm-detail .product-visual{max-width:100%}.firm-detail .process-step,.firm-detail .sample-grid article,.firm-detail .inside-grid>div{padding:22px}.firm-detail .split{gap:28px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}
.firm-detail main.wrap .tick{display:block;margin:20px 0}.firm-detail main.wrap .tick li{margin:8px 0;line-height:1.45}.firm-detail .edition-line{text-transform:none;letter-spacing:0;font-size:11px}.firm-detail .product-visual .scope-preview{margin-top:16px}

/* Keep worked examples inset from the navy panel on firm drills. */
main.wrap>section.answer-showcase{padding:clamp(38px,5vw,68px);border-bottom:0;margin:28px 0}
@media(max-width:760px){main.wrap>section.answer-showcase{padding:38px 18px;margin:24px -18px;border-radius:0}}

/* Keep the free tool link readable against the dark hero. */
.editorial-hero .hero-footnote a { color: #e8c264; text-decoration-color: #e8c264; }
.editorial-hero .hero-footnote a:hover { color: #fff4cc; }

/* Firm finder: all firm cards remain visible without JavaScript. */
#firms .firm-card[hidden],.firm-finder[hidden]{display:none!important}
.firm-finder{padding:24px;margin:24px 0;background:#fffcf7;border:1px solid #ddd6c9;border-radius:5px}
.firm-finder label{display:block;font-weight:700;margin-bottom:10px;color:var(--navy)}
.finder-input-row{display:flex;gap:12px;align-items:stretch}
.firm-finder input{min-width:0;flex:1;font:inherit;padding:14px;border:1px solid #a39986;border-radius:4px;color:var(--navy);background:#fff}
.firm-finder button{font:inherit;font-size:13px;font-weight:700;cursor:pointer;border:1px solid #a39986;border-radius:4px;background:#fff;color:#172d42;padding:12px 16px;min-height:44px}
.finder-shortcuts{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.finder-shortcuts button[aria-pressed=true]{background:#172d42;color:#fff;border-color:#172d42}
.firm-finder input:focus-visible,.firm-finder button:focus-visible{outline:3px solid #b6872d;outline-offset:3px}
#firm-status{font-size:13px;margin-top:16px;color:#515e6c}
@media(max-width:600px){.firm-finder{padding:18px}.finder-input-row{flex-direction:column}.finder-input-row button{align-self:flex-start}.finder-shortcuts button{font-size:12px;padding:10px 12px}}

.hero-finder{margin:22px 0;padding:18px;background:#faf7ee;color:#102540;border-radius:9px}.hero-finder label{display:block;font-weight:700;margin-bottom:9px}.hero-finder input{width:100%;box-sizing:border-box;font:inherit;padding:12px;border:1px solid #8897a5;border-radius:5px;background:#fff;color:#102540}.hero-finder input:focus{outline:3px solid #d7ac44}.hero-finder p{font-size:.85rem;margin:10px 0}#hero-firm-results{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:12px}#hero-firm-results a{font-size:.85rem;padding:7px 10px;border:1px solid #ddd2bc;border-radius:5px;color:#102540;background:#fff}.hero-finder>a{color:#102540;font-size:.85rem}.hero-finder[hidden]{display:none}.worked-reveal{margin-top:15px;border-top:1px solid #d3dce4;padding-top:12px}.worked-reveal>summary{cursor:pointer;color:#a12d36;font-weight:700;padding:8px 0}.answer-first-note{color:#536879;font-size:.9rem}.try-next{display:inline-block;margin-top:16px}.purchase-choice{padding:20px;border:1px solid #dfd5c1;border-radius:8px;margin-top:22px}.xlsx-proof{margin:20px 0}.xlsx-proof details{padding:14px 0;border-bottom:1px solid #ddd}.xlsx-proof summary{cursor:pointer;font-weight:700}.xlsx-proof figure{margin:18px 0;overflow-x:auto}.xlsx-proof img{display:block;max-width:none;width:1200px}.xlsx-proof details:nth-of-type(2) img{width:760px}.xlsx-proof figcaption{font-size:.85rem;max-width:700px;margin-top:10px;color:#536879}@media(max-width:600px){.xlsx-proof figure{max-width:100%}.hero-finder{padding:14px}}

.xlsx-proof figure{overflow:visible}.xlsx-image-scroll{overflow-x:auto;max-width:100%;border:1px solid #e4ded1;padding:4px;background:#fff}.preview-hint{font-size:.85rem;margin:8px 0}.xlsx-proof figcaption{width:auto}