:root{font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#eef4f2;background:#0b1119;font-synthesis:none;--mint:#b5ead5;--muted:#a3b2b9;--line:#283b42;--surface:#14222a}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0}a{color:inherit;text-decoration:none}button,select{font:inherit}button,a,select{touch-action:manipulation}button{cursor:pointer}a:focus-visible,button:focus-visible,select:focus-visible{outline:3px solid var(--mint);outline-offset:4px}.skip{position:absolute;top:-80px;left:10px;background:white;color:black;padding:10px;z-index:10}.skip:focus{top:10px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.shell{width:min(1200px,calc(100% - 64px));margin:auto}.topbar{height:92px;padding:0 max(32px,calc((100vw - 1200px)/2));display:flex;align-items:center;gap:65px;border-bottom:1px solid #ffffff0e}.brand{display:flex;align-items:center;gap:12px;font-size:15px;letter-spacing:.08em;font-weight:800;line-height:1}.brand-accent{color:var(--mint)}.brand small{display:block;font-size:8px;letter-spacing:.15em;color:#809391;margin-top:6px}.brand-mark{width:29px;height:29px;display:grid;grid-template-columns:1fr 1fr;gap:3px;transform:rotate(-8deg)}.brand-mark i{border:1px solid #a9ead3;border-radius:2px}.brand-mark i:nth-child(2){background:#b5ead5}.topbar nav{display:flex;gap:32px;color:#aebbbd;font-size:14px}.top-actions{margin-left:auto;display:flex;gap:24px;align-items:center}.top-actions select{background:transparent;color:#d9e7e3;border:0;min-height:44px}.top-actions option{background:#14222a}.text-link{font-size:14px}.text-link span{color:var(--mint)}.hero{position:relative;display:grid;grid-template-columns:1fr 490px;gap:90px;align-items:center;min-height:690px;padding-top:70px;padding-bottom:90px}.hero:before{content:"";position:absolute;inset:0 0 0 10%;z-index:-1;background:radial-gradient(ellipse at 75% 45%,#163b36 0,transparent 52%)}.eyebrow{font-size:11px;font-weight:700;letter-spacing:.17em;color:#91d6be}.hero-copy .eyebrow span{display:inline-block;background:#9ee0c8;width:7px;height:7px;border-radius:50%;margin-right:9px}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(50px,5.7vw,76px);line-height:1.16;letter-spacing:-.04em;margin:28px 0}em{font-style:normal;color:var(--mint)}.hero-desc{font-size:17px;line-height:1.9;color:#b5c4c7;max-width:430px}.hero-actions{display:flex;gap:12px;margin:36px 0 65px}.button{min-height:52px;display:inline-flex;align-items:center;justify-content:center;gap:40px;padding:0 20px;border-radius:6px;font-size:14px;font-weight:700}.primary{background:var(--mint);color:#10251f}.primary:hover{background:#d6f8e9}.ghost{border:1px solid #40575a;color:#e3efeb}.ghost:hover{border-color:var(--mint)}.hero-foot{display:flex;align-items:center;gap:15px;font-size:13px;color:#dce7e4}.hero-foot>span{font-size:28px;color:var(--mint)}.hero-foot p{margin:0;line-height:1.5}.hero-foot small{color:#829997}.hero-side{position:absolute;right:0;writing-mode:vertical-rl;letter-spacing:.2em;font-size:9px;color:#61817c}.visual{padding:28px 30px 22px;border:1px solid #385451;border-radius:12px;background:linear-gradient(140deg,#192e31,#111d25);box-shadow:0 35px 100px #0006}.visual-heading,.board-top{display:flex;justify-content:space-between;align-items:start}.visual h2{font-size:21px;margin:8px 0 0}.visual-count{font-size:11px;color:#9cb0ae}.visual>p{font-size:13px;color:#9fb1b1;margin:18px 0}.matrix{display:grid;grid-template-columns:repeat(3,1fr);gap:7px}.matrix div{aspect-ratio:1.48;display:grid;place-items:center;background:#20363a;border:1px solid #304c4c;border-radius:4px;color:#c7eee1;font-size:27px;letter-spacing:3px}.matrix .missing{background:#162b2d;border:1px dashed #8acfb6;font-size:30px}.option-label{display:flex;justify-content:space-between;color:#c2d1cf;font-size:12px;margin:22px 0 10px}.option-label span{font-size:9px;letter-spacing:.1em;color:#76928d}.options{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.options button{position:relative;border:1px solid #38514f;background:#1e3334;color:#d2f0e5;border-radius:4px;min-height:58px;font-size:22px}.options button:hover,.options button.selected{border-color:#a2e4cb;background:#2a5148}.options small{position:absolute;left:8px;top:6px;font-size:9px;color:#99b8ad}.visual .feedback{min-height:20px;margin:12px 0;font-size:12px}.visual-footer{padding-top:15px;border-top:1px solid #ffffff13;color:#94aaa5;font-size:11px}.visual-footer span{color:var(--mint);margin-right:8px}.strip{border-block:1px solid #273b3c}.strip-inner{display:flex;justify-content:space-between;align-items:center;gap:20px;min-height:68px;font-size:10px;letter-spacing:.18em;color:#7d9992}.strip-inner span:last-child{color:var(--mint);font-size:22px}.section{padding-top:120px;padding-bottom:120px}.section-head{display:flex;justify-content:space-between;align-items:end;gap:30px}.section h2{font-size:clamp(34px,4vw,52px);line-height:1.24;letter-spacing:-.03em;margin:22px 0}.section-head>p,.split>div>p,.method p{max-width:380px;color:var(--muted);line-height:1.9;font-size:15px}.steps{display:grid;grid-template-columns:repeat(3,1fr);margin-top:55px;border:1px solid var(--line)}.steps article{padding:32px;border-right:1px solid var(--line)}.steps article:last-child{border:0}.step-number{font-size:10px;letter-spacing:.15em;color:#8cb3a7}.step-symbol{font-size:48px;color:#b5ead5;margin:55px 0 40px}.steps h3{font-size:20px}.steps p{color:var(--muted);line-height:1.8;font-size:14px}.leaderboard-wrap{background:#111e23}.split{display:grid;grid-template-columns:1fr 1fr;gap:90px;align-items:center}.split .button{margin-top:25px}.board{border:1px solid #344c4b;border-radius:8px;background:#182b2c;padding:28px}.board h3{margin:10px 0 25px;font-size:22px}.live{font-size:11px;color:#a3d9c6}.board-columns{display:flex;justify-content:space-between;border-block:1px solid #3a5150;padding:14px 0;font-size:10px;color:#92a9a3;letter-spacing:.08em}.board-empty{text-align:center;padding:55px 10px 35px;color:#c5dad3}.board-empty>span{display:block;color:var(--mint);font-size:30px;margin-bottom:18px}.board-empty p{font-size:13px;color:#9eb1ac;margin:12px 0}.method{display:grid;grid-template-columns:1fr 1fr;gap:90px}.method p{max-width:500px}.inline-link{display:inline-block;margin-top:16px;color:var(--mint);border-bottom:1px solid #77aa99;padding-bottom:8px;font-size:14px}.cta{display:flex;justify-content:space-between;align-items:center;gap:25px;padding:58px;background:#19312f;border:1px solid #345952;border-radius:8px}.cta h2{font-size:clamp(30px,4vw,46px);margin:18px 0}.cta p{color:#a9c2b9;margin:0}.footer{display:flex;justify-content:space-between;gap:30px;align-items:start;padding-top:70px;padding-bottom:45px;color:#899f9a;font-size:12px}.footer .brand{color:white}.footer p{margin-top:14px}.footer>div:nth-child(2){display:flex;gap:25px}.footer small{font-size:11px}@media(max-width:850px){.topbar{padding:0 24px;gap:20px}.topbar nav{display:none}.shell{width:calc(100% - 40px)}.hero{grid-template-columns:1fr;gap:40px;padding-top:65px}.hero-actions{margin-bottom:35px}.hero-side{display:none}.hero-copy h1{font-size:52px}.visual{max-width:520px}.split,.method{grid-template-columns:1fr;gap:35px}.section{padding:80px 0}.steps article{padding:22px}.step-symbol{margin:35px 0}.cta{padding:32px}.footer{flex-wrap:wrap}}@media(max-width:560px){.topbar{height:76px}.brand{font-size:12px}.top-actions{gap:8px}.text-link{font-size:12px}.top-actions select{max-width:105px;font-size:12px}.hero{padding-bottom:65px}.hero-copy h1{font-size:46px}.visual{padding:22px 18px}.section-head{display:block}.steps{grid-template-columns:1fr}.steps article{border-right:0;border-bottom:1px solid var(--line)}.steps article:last-child{border:0}.step-symbol{margin:25px 0;font-size:36px}.cta{display:block}.cta .button{margin-top:25px}.footer{display:block}.footer>div:nth-child(2){margin:30px 0}.strip-inner span:nth-child(3){display:none}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
.board-list>div{display:flex;justify-content:space-between;padding:15px 0;border-bottom:1px solid #ffffff0c;color:#d0ded9;font-size:14px}.board-list strong{color:var(--mint)}
.preview-notice{padding:8px 20px;background:#284f44;color:#d7f6e9;text-align:center;font-size:12px;letter-spacing:.02em}
.mobile-nav{display:none}.topbar{position:relative;z-index:2}.mobile-nav summary{list-style:none;cursor:pointer;min-width:44px;min-height:44px;display:grid;place-items:center;color:#d9e7e3}.mobile-nav summary::-webkit-details-marker{display:none}.mobile-nav summary:focus-visible{outline:3px solid var(--mint);outline-offset:2px}.mobile-nav nav{position:absolute;right:20px;top:calc(100% - 8px);min-width:190px;padding:8px;background:#172a2d;border:1px solid #405c55;border-radius:6px;box-shadow:0 20px 45px #0008}.mobile-nav nav a{display:block;padding:14px;color:#e4eee9}.mobile-nav nav a:hover{background:#28463d}
@media(max-width:850px){.mobile-nav{display:block}.topbar .mobile-nav nav{display:block}}
@media(max-width:560px){.hero-actions{flex-direction:column;align-items:stretch}.hero-actions .button{width:100%;justify-content:space-between;gap:20px}.topbar .top-actions{gap:4px}.mobile-nav summary{min-width:44px}.topbar{padding-inline:18px}}
@media(max-width:850px){.hero{grid-template-columns:minmax(0,1fr)}.visual{min-width:0}.visual .options{grid-template-columns:repeat(4,minmax(0,1fr))}.visual .options button{font-size:clamp(12px,4vw,21px)}}
@media(max-width:360px){.topbar .brand{font-size:11px;gap:8px}.topbar .brand-mark{width:24px;height:24px;flex-shrink:0}.topbar .brand small{display:none}.top-actions select{max-width:75px}.topbar .text-link{font-size:11px;white-space:nowrap}}
@media(max-width:560px){.visual .matrix{grid-template-columns:repeat(3,minmax(0,1fr))}.visual .matrix div{font-size:clamp(18px,6vw,27px);letter-spacing:2px}}


.feedback.success{display:flex;align-items:center;gap:10px;padding:12px 14px;border:1px solid #79d9b5;border-radius:6px;background:#214b3f;color:#d7ffed;font-size:14px;font-weight:700;line-height:1.5}.feedback.success::before{content:"✓";display:grid;place-items:center;flex:none;width:23px;height:23px;border-radius:50%;background:#a9ead2;color:#153b2c;font-size:15px;font-weight:800}

.practice-arrow::before{content:"→"}@media(max-width:850px){.practice-arrow::before{content:"↓"}}

.feedback:empty{display:none}

.homepage-board-list .board-row{display:flex;justify-content:space-between;gap:16px;padding:13px 0;border-bottom:1px solid #304946;color:#d4e3dc}.homepage-board-list strong{color:#b5ead5}.board-note{color:#9eb1ac;font-size:12px;line-height:1.6;margin:16px 0 0}

.board-self{display:inline-block;margin-left:6px;padding:2px 7px;border:1px solid #82c9b0;border-radius:4px;color:#b5ead5;font-size:12px;line-height:1.4}
/* Keyboard focus remains visible without browser outline boxes. */
*:focus{outline:none}
a:focus-visible,button:focus-visible,select:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline:none;box-shadow:0 0 0 2px #89c8b2}

.account-entry{width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;flex:none;border:1px solid #40575a;border-radius:50%;color:#d9e7e3;background:rgba(173,185,205,.035)}.account-entry svg{width:18px;height:18px}.account-entry:hover{color:#eaf7f0;border-color:#91d6be}

/* Keep the native language menu while giving its trigger a clear affordance. */
.topbar .top-actions #language{appearance:none;-webkit-appearance:none;box-sizing:border-box;width:auto;max-width:none;min-width:112px;min-height:44px;padding:0 32px 0 14px;border:1px solid #40575a;border-radius:999px;background-color:rgba(173,185,205,.035);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23b5ead5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");background-position:right 12px center;background-repeat:no-repeat;color:#d9e7e3;font:inherit;font-size:13px;cursor:pointer;transition:border-color .18s,background-color .18s}
.topbar .top-actions #language:hover{border-color:#91cbb6;background-color:rgba(181,234,213,.08)}
.topbar .top-actions #language:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(181,234,213,.45)}
.topbar .top-actions #language:disabled{opacity:.65;cursor:wait}
@media(max-width:560px){.topbar .top-actions{gap:8px}.topbar .top-actions #language{min-width:100px;max-width:118px;padding-left:11px;padding-right:27px;background-position:right 9px center;font-size:12px}}

/* Independent geometric forms echo the elements used in the test. */
.hero{isolation:isolate;overflow:clip}.hero:before{z-index:-2}.hero-ambient{position:absolute;inset:0;z-index:-1;overflow:hidden;pointer-events:none}.hero-shape{position:absolute;width:var(--size);aspect-ratio:1;left:var(--x);top:var(--y);opacity:var(--opacity);background-position:center;background-repeat:no-repeat;background-size:contain;animation:hero-shape-drift var(--duration) ease-in-out var(--delay) infinite alternate;animation-play-state:paused}.hero.motion-visible .hero-shape{animation-play-state:running}.hero-shape.circle{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 80 80' fill='none' stroke='%2389d9bd' stroke-width='1.2'%3E%3Ccircle cx='40' cy='40' r='26'/%3E%3C/svg%3E")}.hero-shape.square{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 80 80' fill='none' stroke='%2389d9bd' stroke-width='1.2'%3E%3Crect x='16' y='16' width='48' height='48' rx='2'/%3E%3C/svg%3E")}.hero-shape.triangle{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 80 80' fill='none' stroke='%2389d9bd' stroke-width='1.2' stroke-linejoin='round'%3E%3Cpath d='M40 12 70 65H10z'/%3E%3C/svg%3E")}.hero-shape.star{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 80 80' fill='none' stroke='%2389d9bd' stroke-width='1.2' stroke-linejoin='round'%3E%3Cpath d='m40 9 8 20 22 1-17 14 6 22-19-12-19 12 6-22L10 30l22-1z'/%3E%3C/svg%3E")}
@keyframes hero-shape-drift{from{transform:translate3d(0,0,0) rotate(var(--rotation))}to{transform:translate3d(var(--dx),var(--dy),0) rotate(var(--rotation-end))}}
@media(max-width:850px){.hero-shape{opacity:calc(var(--opacity) * .8)}}
@media(prefers-reduced-motion:reduce){.hero-shape{animation:none;transform:rotate(var(--rotation))}}
/* Limit touch gestures to page panning on mobile. */
html{touch-action:pan-x pan-y}

.raven-choices{display:grid}.raven-choices .choice-card{font:inherit}.home-choice{scroll-margin-top:32px;padding-top:90px;padding-bottom:100px}
.choice-heading{margin:0 0 34px}.choice-heading h2{font-size:clamp(30px,4vw,44px);line-height:1.2;margin:0 0 12px}.choice-heading p{margin:0;color:#aabeb9;line-height:1.6}.raven-choices.choice-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.raven-choices .choice-card{display:flex;flex-direction:column;align-items:stretch;gap:0;min-width:0;padding:0;text-align:left;color:#e8f4ee;background:#142329;border:1px solid #304946;border-radius:12px;overflow:hidden;transition:border-color .18s,background-color .18s}.choice-card:hover{background:#18302e;border-color:#82cbb1}.choice-card:focus-visible{outline:none;box-shadow:0 0 0 3px #b5ead5}.choice-art{display:flex;align-items:center;justify-content:center;min-height:168px;background:#19332f;color:#a9e7ce}.choice-card:nth-child(2) .choice-art{background:#192d34;color:#addfcf}.choice-art svg{width:180px;height:130px;max-width:80%}.raven-choices .choice-body{display:flex;flex:1;flex-direction:column;align-items:start;gap:0;padding:28px;color:#e8f4ee}.choice-body>strong{font-size:20px;line-height:1.4}.raven-choices .choice-description{font-size:14px;line-height:1.75;color:#bbcec6;margin:12px 0 22px}.raven-choices .choice-meta{font-size:13px;font-weight:650;letter-spacing:.02em;color:#9fdac3;margin-top:auto}.raven-choices .choice-action{width:100%;display:flex;justify-content:space-between;align-items:center;margin-top:22px;padding-top:18px;border-top:1px solid #355049;color:#b5ead5;font-size:14px;font-weight:700}.raven-choices .choice-action span{color:inherit;font-size:inherit}.raven-choices .choice-action span:last-child{font-size:18px}@media(max-width:640px){.choice-heading{margin-bottom:24px}.raven-choices.choice-grid{grid-template-columns:1fr;gap:14px}.choice-art{min-height:124px}.choice-art svg{width:150px;height:110px}.raven-choices .choice-body{padding:22px}.choice-body>strong{font-size:18px}.raven-choices .choice-description{margin:10px 0 16px}.raven-choices .choice-action{margin-top:16px;padding-top:14px}}


.home-choice .choice-action{min-height:48px;padding:0 16px;border:0;border-radius:6px;background:#b5ead5;color:#10251f;transition:background-color .18s}.home-choice .choice-card:hover .choice-action{background:#d6f8e9}

/* A full-width surface separates the test choices from the animated hero. */
.home-choice{position:relative;isolation:isolate}
.home-choice::before{content:"";position:absolute;z-index:-1;top:0;bottom:0;left:50%;width:100vw;transform:translateX(-50%);background:#101d21;border-top:1px solid #2b4240;pointer-events:none}
@media(max-width:640px){.home-choice{padding-top:64px;padding-bottom:72px}}
.home-choice .choice-seo{max-width:760px;margin-top:42px;color:#a9bbb8}.home-choice .choice-seo h3{font-size:16px;color:#d9ebe4;margin:0 0 10px}.home-choice .choice-seo p{font-size:14px;line-height:1.8;margin:0}
.board-switch{display:flex;gap:6px;margin:0 0 18px;padding:4px;border-radius:7px;background:#102221;width:max-content;max-width:100%}.board-switch[hidden]{display:none}.board-switch button{min-height:40px;padding:0 18px;border:0;border-radius:5px;background:transparent;color:#a9beb6;font:inherit;font-weight:650;cursor:pointer}.board-switch button[aria-pressed="true"]{background:#31594e;color:#e6f8f0}.board-switch button:focus-visible{box-shadow:0 0 0 2px #b5ead5}

/* The same matrix mark is used on every site surface. */
.brand-mark{display:block;flex:none;width:34px;height:36px;transform:none;background:url('/icons/brand-mark.svg') center/contain no-repeat}
.brand-mark i{display:none}
.footer .brand::before{content:"";display:block;flex:none;width:27px;height:29px;background:url('/icons/brand-mark.svg') center/contain no-repeat}
@media(max-width:360px){.topbar .brand-mark{width:28px;height:30px}}