@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700;800&display=swap');
:root{--ink:#25252B;--muted:#465C64;--paper:#D9E7E8;--green:#528A9A;--line:#B3CDD2}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:95px}body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.65 Manrope,Arial,sans-serif}a{color:inherit;text-decoration:none}button,input{font:inherit}button,a,input{outline-offset:5px}button{cursor:pointer}header{max-width:1280px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:26px 44px;border-bottom:1px solid var(--line)}.brand{font-size:21px;font-weight:800;letter-spacing:-1px}header nav{display:flex;gap:28px;font-size:13px}header nav a:hover,footer a:hover{text-decoration:underline}.nav-test{font-size:12px;border:1px solid var(--line);padding:9px 16px;border-radius:30px}main{max-width:1280px;margin:auto}section{padding:80px 44px}.hero{display:grid;grid-template-columns:1.3fr 1fr;align-items:center;gap:36px;padding-top:70px;padding-bottom:55px}.eyebrow{font-size:10px;font-weight:800;letter-spacing:2px;margin:0 0 22px}.dot{display:inline-block;width:7px;height:7px;background:#528A9A;border-radius:50%;margin-right:8px}h1{font-size:clamp(42px,4.8vw,65px);line-height:1.12;letter-spacing:-3px;margin:0 0 25px;font-weight:800}h1 em{font-style:normal;background:var(--green);padding:0 7px 4px;display:inline-block;transform:rotate(-2deg)}.intro{max-width:500px;font-size:15px;color:var(--muted);line-height:1.8}.actions{display:flex;align-items:center;gap:24px;margin-top:30px}.button{background:var(--ink);color:white;padding:15px 22px;border-radius:7px;font-size:12px;font-weight:700}.button span{margin-left:25px}.text-link{font-size:12px;font-weight:700}.hero-meta{display:flex;gap:30px;margin-top:45px;color:var(--muted);font-size:10px}.visual{height:365px;position:relative;background:radial-gradient(ellipse,#B2CFD4,transparent 65%);display:grid;place-items:center;overflow:hidden}.orbit{position:absolute;border:1px solid #8FB6C0;border-radius:50%;width:310px;height:310px;transform:rotate(-30deg) scaleY(.7)}.o2{transform:rotate(55deg) scaleY(.75);width:320px;height:320px}.core{font-size:190px;line-height:1;color:#25252B;filter:drop-shadow(9px 17px 0 #528A9A);transform:rotate(-15deg)}.float{position:absolute;background:#F2F7F8;border:1px solid var(--line);box-shadow:0 10px 24px #18321c0a;border-radius:9px;padding:10px 16px;font-size:12px;font-weight:700}.f1{left:2%;top:24%}.f2{right:2%;top:14%}.f3{right:1%;bottom:20%;transform:rotate(-6deg)}.visual-caption{position:absolute;bottom:0;font-size:8px;letter-spacing:2px;color:var(--muted)}.strip{margin:0 44px;padding:23px 0;display:flex;align-items:center;gap:40px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.strip>span:first-child{font-weight:800;white-space:nowrap}.strip p{margin:0;color:var(--muted);font-size:12px;max-width:660px}.asterisk{font-size:32px;margin-left:auto}.section-heading{display:flex;justify-content:space-between;gap:45px;align-items:end;margin-bottom:30px}h2{font-size:36px;line-height:1.2;letter-spacing:-1.5px;margin:0;font-weight:800}.section-heading>p{max-width:340px;font-size:13px;color:var(--muted);margin:0 0 3px}.filters{display:flex;flex-wrap:wrap;gap:8px;margin:28px 0}.filters button,.example-tabs button{border:1px solid var(--line);border-radius:30px;padding:8px 15px;font-size:11px;background:transparent;color:var(--ink)}.filters button.active,.example-tabs button.active{background:var(--ink);color:white;border-color:var(--ink)}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.card{border:1px solid var(--line);border-radius:12px;padding:24px;background:#F2F7F8;display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s}.card:hover{transform:translateY(-4px);box-shadow:0 10px 25px #193b2310}.card-top{display:flex;justify-content:space-between;align-items:center}.logo{width:42px;height:42px;display:grid;place-items:center;border-radius:11px;font-size:22px;font-weight:800}.card-tag{font-size:9px;color:var(--muted)}h3{font-size:20px;line-height:1.35;letter-spacing:-.5px}.card h3{margin:20px 0 2px}.card .purpose{font-size:11px;color:#345E6B;font-weight:700;margin:0}.card p{font-size:12px;color:var(--muted)}.card a{font-size:11px;font-weight:800;border-top:1px solid var(--line);padding-top:14px;margin-top:auto}.note{color:var(--muted);font-size:10px;margin-top:22px}.prompt-section{background:#C8DDE1}.formula{display:flex;align-items:center;gap:18px;margin:35px 0}.formula span{background:white;border:1px solid var(--line);border-radius:7px;flex:1;text-align:center;padding:15px;font-weight:700;font-size:13px}.formula b{color:#528A9A}.example-tabs{display:flex;gap:8px;margin-bottom:18px}.comparison{display:grid;grid-template-columns:1fr 1.4fr;gap:16px}.comparison article{padding:27px;border-radius:10px}.bad{background:#E1E7E9}.good{background:#A8CDD5}.comparison p{font-size:13px}.bad h3{font-size:23px;margin:28px 0}.small-button{border:1px solid #637455;border-radius:5px;background:transparent;color:var(--ink);padding:8px 13px;font-size:11px;font-weight:700}.tip{font-size:12px;color:var(--muted);margin-top:20px}.builder{margin-top:45px;border-top:1px solid #9DBFC8;padding-top:35px;display:grid;grid-template-columns:1fr 1.7fr;gap:50px}.builder p{font-size:12px;color:var(--muted)}.fields{display:grid;grid-template-columns:1fr 1fr;gap:14px}.fields label{font-size:11px;font-weight:700}input{width:100%;border:1px solid #9DBFC8;background:#F2F7F8;border-radius:5px;padding:10px;margin-top:5px;font-size:11px;color:var(--ink)}.output{white-space:pre-wrap;background:#ffffff70;border:1px dashed #528A9A;padding:14px;margin:18px 0;font-size:12px;min-height:75px}#copy-status{font-size:11px;margin-left:10px}.token-demo{display:grid;grid-template-columns:1fr 1fr;gap:65px;background:var(--ink);color:#D9E7E8;border-radius:13px;padding:35px;margin:35px 0 25px}.pill{font-size:9px;color:var(--green);letter-spacing:2px}.token-demo h3{font-size:25px}.token-demo p{font-size:12px;color:#D9E7E8}.token-right{display:flex;flex-direction:column;justify-content:center}.tokens{display:flex;flex-wrap:wrap;gap:5px;margin:12px 0 20px}.tokens span{background:#528A9A;color:#25252B;padding:9px;font-size:17px;border-radius:4px}.tokens span:nth-child(2n){background:#B2CFD4}.knowledge{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}.knowledge article{padding:20px 0;border-top:1px solid var(--line)}.knowledge span{font-size:11px;color:#465C64}.knowledge p{font-size:12px;color:var(--muted)}.knowledge b{font-size:11px}.rules{border-left:3px solid #528A9A;padding:4px 25px;margin-top:35px}.rules p{font-size:12px}.quiz{background:var(--green);display:grid;grid-template-columns:1fr 1fr;gap:65px}.quiz>div>p{font-size:12px}.quiz h3{margin-top:0}#quiz-body button{display:block;text-align:left;width:100%;background:#ffffff60;border:1px solid #345E6B;border-radius:6px;padding:12px 15px;margin:8px 0;font-size:12px}#quiz-body button:hover{background:white}#quiz-body button:disabled{cursor:default}#quiz-body .correct{background:#E9F5F7;border-color:#345E6B}#quiz-body .wrong{background:#E9D8D5;border-color:#8E4A43}#quiz-body p{font-size:12px}.sources{padding-top:55px;padding-bottom:55px}.sources>p{max-width:720px;font-size:12px;color:var(--muted)}.sources>div{display:flex;flex-wrap:wrap;gap:12px 25px;margin-top:20px}.sources a{font-size:10px;text-decoration:underline}footer{border-top:1px solid var(--line);padding:25px 44px;max-width:1280px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:20px;font-size:10px}footer .brand{font-size:17px}button:hover,.button:hover{filter:brightness(.94)}@media(max-width:800px){header{padding:20px 22px;flex-wrap:wrap}header nav{order:3;justify-content:space-between;width:100%;gap:10px}.brand{font-size:18px}.nav-test{font-size:10px}section{padding:52px 22px}.hero{grid-template-columns:1fr;padding-top:45px;gap:10px}h1{font-size:48px}.visual{height:300px}.strip{margin:0 22px;gap:15px;align-items:start;flex-wrap:wrap}.strip p{flex:1;min-width:200px}.strip .asterisk{display:none}.section-heading{display:block}.section-heading>p{margin-top:20px;max-width:100%}h2{font-size:31px}.cards{grid-template-columns:repeat(2,1fr)}.comparison,.builder,.token-demo,.quiz{grid-template-columns:1fr;gap:20px}.formula{gap:6px}.formula span{font-size:10px;padding:10px 4px}.formula b{font-size:10px}.knowledge{gap:18px}.token-demo{padding:25px}.quiz{gap:30px}footer{padding:24px 22px;flex-wrap:wrap}}@media(max-width:480px){.cards{grid-template-columns:1fr}.knowledge{grid-template-columns:1fr}.actions{gap:16px;flex-wrap:wrap}.hero-meta{gap:24px}.fields{grid-template-columns:1fr}.filters button{padding:8px 12px}.example-tabs{flex-wrap:wrap}.visual{margin-top:15px}h1{font-size:42px;letter-spacing:-2px}.section-heading h2{font-size:29px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.card{transition:none}}

/* Accessible text over the reference turquoise. */
h1 em,.quiz{color:#fff}.quiz .eyebrow{color:#fff}.quiz #quiz-body{color:#25252B}.quiz #quiz-body>.eyebrow{color:#fff}.quiz #quiz-body h3{color:#fff}.quiz #quiz-body p:not(.eyebrow){color:#fff}.quiz #quiz-body>button{background:#D9E7E8;border-color:#345E6B}.token-demo .pill{color:#A8CDD5}::selection{background:#528A9A;color:white}
.quiz{background:#25252B;border-top:5px solid #528A9A}.tokens span{background:#D9E7E8}.tokens span:nth-child(2n){background:#B2CFD4}.quiz #quiz-body>button.correct{background:#D9E7E8;border:2px solid #528A9A}.quiz #quiz-body>button.wrong{background:#E9D8D5;border:2px solid #8E4A43}
/* Ice + coral: a warm accent against cool paper and charcoal. */
:root{--coral:#FF785A;--coral-soft:#FFE0D6}
.hero{background:#25252B;color:#D9E7E8;border-radius:0 0 22px 22px;padding-bottom:65px;margin-bottom:28px}
.hero h1{color:#fff}.hero h1 em{background:var(--coral);color:#25252B}.hero .intro{color:#CDDDE0}.hero .dot{background:var(--coral)}.hero .button{background:var(--coral);color:#25252B}.hero .text-link{color:#fff}.hero-meta{color:#B3CDD2}.hero .visual{background:radial-gradient(ellipse,#528A9A55,transparent 67%)}.hero .core{color:#D9E7E8;filter:drop-shadow(9px 17px 0 #FF785A)}.hero .orbit{border-color:#528A9A}.hero .float{color:#25252B;background:#D9E7E8;border-color:#B3CDD2}.hero .f3{background:var(--coral);border-color:var(--coral)}.hero .visual-caption{color:#B3CDD2}
.nav-test{background:var(--coral);color:#25252B;border-color:var(--coral);font-weight:800}
.logo{width:56px;height:56px;font-size:29px;border-radius:15px;background:#D9E7E8!important;color:#25252B}.card:nth-child(3n+1) .logo{background:var(--coral-soft)!important}.card:nth-child(3n+2) .logo{background:#528A9A!important;color:white}.card:nth-child(3n) .logo{background:#25252B!important;color:#D9E7E8}.card:hover{border-color:#FF785A;box-shadow:0 10px 25px #25252B13}.card a{display:flex;justify-content:space-between}.card a:hover{color:#853523}
.filters button.active{box-shadow:inset 0 -3px 0 var(--coral)}.prompt-section{background:#EFF5F5;border-top:5px solid #528A9A}.good{background:#C8DDE1;border:1px solid #9DBFC8}.bad{background:#FFE9E2}.good .small-button,.builder .small-button{background:var(--coral);color:#25252B;border-color:var(--coral)}.small-button:disabled{opacity:.5;cursor:default}.formula b{color:#93422F}.rules{border-left-color:var(--coral)}.quiz{border-top-color:var(--coral)}.quiz #quiz-body>button{background:#D9E7E8}.quiz #quiz-body>button:not(:disabled):hover{background:var(--coral)}.quiz #quiz-body>button.correct{border:3px solid #528A9A}.sources a:hover{color:#853523}input:focus{outline:2px solid #528A9A}.brand{letter-spacing:-.6px}
@media(max-width:800px){.hero{border-radius:0 0 16px 16px;padding-bottom:42px}.logo{width:50px;height:50px;font-size:26px}}
button.card{text-align:left;color:var(--ink);font-family:inherit;line-height:1.65;cursor:pointer;width:100%}.card-top{width:100%;gap:12px}.card-title{font-size:20px;font-weight:800;letter-spacing:-.5px;line-height:1.35;margin:20px 0 2px}.card-description{font-size:12px;color:var(--muted);margin:12px 0 20px}.card-more{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding-top:14px;margin-top:auto;font-size:11px;font-weight:800;width:100%}.card:focus-visible{outline:3px solid #93422F;outline-offset:3px}.detail-dialog{border:1px solid #B3CDD2;background:#F2F7F8;color:#25252B;border-radius:18px;padding:0;width:min(850px,calc(100% - 32px));max-height:90vh;max-height:90dvh;box-shadow:0 30px 100px #0005;overscroll-behavior:contain}.detail-dialog::backdrop{background:#17171dc9;backdrop-filter:blur(5px)}.detail-toolbar{position:sticky;top:0;z-index:1;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:16px 28px;background:#25252B;color:#D9E7E8}.detail-toolbar>span{font-size:9px;letter-spacing:1.5px}.detail-close{border:1px solid #FF785A;border-radius:6px;background:#FF785A;color:#25252B;font-size:12px;font-weight:800;padding:8px 13px;white-space:nowrap}#detail-content{padding:32px 36px 40px}.detail-heading{display:flex;align-items:center;gap:18px}.detail-heading .logo{flex-shrink:0;background:#FFE0D6!important;font-size:32px;width:64px;height:64px}.detail-heading .eyebrow{margin-bottom:6px}.detail-heading h2{font-size:36px}.detail-lead{font-size:17px;color:#345E6B;margin-bottom:28px}.detail-block{padding:18px 0;border-top:1px solid #B3CDD2}.detail-block h3,.detail-prompt h3{font-size:17px;margin:0 0 10px}.detail-block p,.detail-block li,.detail-prompt p{font-size:13px;line-height:1.85}.detail-block p{margin:0}.detail-block ul,.detail-block ol{margin:0;padding-left:21px}.detail-block li+li{margin-top:5px}.detail-prompt{background:#D9E7E8;border-left:4px solid #FF785A;padding:23px;margin:10px 0 24px;border-radius:0 9px 9px 0}.detail-prompt .small-button{background:#FF785A;border-color:#FF785A;color:#25252B}.detail-columns{display:grid;grid-template-columns:1fr 1fr;gap:24px}.detail-date{font-size:10px;line-height:1.7;color:#465C64}.detail-sources a{display:inline-block;font-size:12px;text-decoration:underline;margin:0 18px 10px 0}.detail-visit{display:inline-block;background:#25252B;color:#fff;margin-top:12px}#detail-copy-status{display:block;font-size:11px;margin-top:8px}@media(max-width:600px){.detail-dialog{width:calc(100% - 16px);max-height:94dvh;border-radius:12px}.detail-toolbar{padding:13px 16px}.detail-toolbar>span{font-size:8px;letter-spacing:.7px}#detail-content{padding:24px 20px 30px}.detail-columns{grid-template-columns:1fr;gap:0}.detail-heading h2{font-size:30px}.detail-prompt{padding:18px}}