.page-crumb{display:flex;align-items:center;gap:12px;padding-block:20px;color:#8291a3;font-size:11px}
.page-crumb a:hover{color:var(--blue-deep)}.page-crumb strong{color:var(--blue-night);font-weight:600}
.page-hero{background:var(--blue-night);color:#fff;overflow:hidden}.page-hero-grid{min-height:338px;display:grid;grid-template-columns:minmax(0,1.5fr) minmax(220px,.5fr);align-items:center;gap:50px;padding-block:54px}.page-hero .eyebrow{color:#a9cdf7;margin-bottom:18px}.page-hero h1{font:600 clamp(48px,7vw,82px)/1.03 var(--display);letter-spacing:-.055em;margin:0 0 18px}.page-hero p:not(.eyebrow){max-width:710px;font-size:15px;line-height:1.8;color:#c5d6ea;margin:0}.page-hero-symbol{height:214px;border:1px solid rgba(255,255,255,.22);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:20px;position:relative}.page-hero-symbol:after{content:'';position:absolute;inset:10px;border:1px solid rgba(255,255,255,.08)}.page-hero-symbol img{width:70px;height:70px;filter:brightness(0) invert(1)}.page-hero-symbol span{font:600 9px var(--display);letter-spacing:.2em;color:#9bbbe2}
.page-section{padding-block:72px 85px}.page-tinted{background:#f2f7fc;border-block:1px solid var(--line)}.page-section-title{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:27px;border-bottom:1px solid var(--line);padding-bottom:17px}.page-section-title span,.contest-top,.lesson-kicker,.editorial-no,.editorial-category{font-size:10px;font-weight:700;letter-spacing:.14em;color:var(--blue-deep)}.page-section-title h2{font:600 clamp(28px,3.5vw,40px)/1.1 var(--display);letter-spacing:-.04em;color:var(--blue-night);margin:0}
.contest-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border:1px solid var(--line)}.contest-card{display:flex;flex-direction:column;min-height:310px;padding:24px;border-right:1px solid var(--line)}.contest-card:last-child{border-right:0}.contest-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:35px;color:#8396ae}.contest-top img{width:22px;height:22px}.contest-card>b{font:600 30px var(--display);color:var(--blue-deep);line-height:1}.contest-card h3{font:600 15px/1.45 var(--display);color:var(--blue-night);margin:12px 0 9px}.contest-card p{font-size:12px;line-height:1.7;color:#65758b;margin:0 0 26px}.contest-card a{margin-top:auto;color:var(--blue-deep);font-size:11px;font-weight:700;border-top:1px solid var(--line);padding-top:13px}.contest-card a:hover{text-decoration:underline}.source-note{font-size:11px;color:#7d8ca0;line-height:1.7;margin:18px 0 0}.step-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border:1px solid #cbddec}.step-card{min-height:123px;padding:18px;border-right:1px solid #cbddec;display:flex;flex-direction:column;justify-content:space-between}.step-card:last-child{border-right:0}.step-card span{font-size:10px;color:var(--blue);font-weight:700}.step-card strong{font:600 14px var(--display);color:var(--blue-night)}
.area-list{border-top:1px solid var(--line)}.area-item{display:grid;grid-template-columns:55px minmax(190px,.7fr) minmax(0,1.2fr) 24px;gap:14px;align-items:center;min-height:88px;padding:10px 15px;border-bottom:1px solid var(--line)}.area-item:hover{background:#f5f9fe}.area-item span{font-size:10px;color:#8395aa}.area-item strong{font:600 17px var(--display);color:var(--blue-night)}.area-item small{font-size:11px;color:#72839a}.area-item i{font-style:normal;color:var(--blue)}.featured-lesson{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center}.featured-lesson h2{font:600 clamp(29px,3.5vw,43px)/1.13 var(--display);letter-spacing:-.04em;color:var(--blue-night);margin:13px 0}.featured-lesson p{font-size:13px;line-height:1.8;color:#63768c;max-width:550px}.lesson-actions{display:flex;gap:25px;flex-wrap:wrap;margin-top:24px}.lesson-actions a{color:var(--blue-deep);font-size:11px;font-weight:700;border-bottom:1px solid #9ebbe4;padding-bottom:5px}.lesson-diagram{min-height:260px;background:#fff;border:1px solid var(--line);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:17px}.mini-grid{width:150px;height:150px;display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);border:2px solid var(--blue-deep)}.mini-grid span{border:1px solid #70a2dd;background:#e8f2fe}.lesson-diagram strong{font:600 19px var(--display);color:var(--blue-night)}
.page-search{width:min(100%,520px);height:48px;border:1px solid var(--line);display:flex;align-items:center;gap:12px;padding-inline:14px;margin-bottom:18px}.page-search img{width:18px;height:18px}.page-search input{border:0;outline:0;width:100%;font-size:12px;color:var(--ink)}.archive-full-list{border-top:1px solid var(--line)}.full-problem{padding:28px 0 30px;border-bottom:1px solid var(--line);display:grid;grid-template-columns:.42fr 1fr;gap:20px 45px}.full-problem[hidden]{display:none}.full-problem-heading span{font-size:9px;font-weight:700;letter-spacing:.12em;color:var(--blue-deep)}.full-problem h3{font:600 23px var(--display);color:var(--blue-night);margin:8px 0 0}.full-problem>p{font-size:14px;line-height:1.75;color:#40546e;margin:0}.full-problem-disclosures{grid-column:2;display:flex;gap:26px;flex-wrap:wrap}.full-problem-disclosures details{flex:1;min-width:200px;border-top:1px solid var(--line);padding-top:10px}.full-problem-disclosures summary{font-size:11px;font-weight:700;color:var(--blue-deep);cursor:pointer}.full-problem-disclosures p{font-size:12px;color:#63758b;line-height:1.75;margin:9px 0 0}
.editorial-list{border-top:1px solid var(--line)}.editorial-item{display:grid;grid-template-columns:.34fr 1fr;gap:55px;border-bottom:1px solid var(--line);padding:38px 0 45px;scroll-margin-top:110px}.editorial-no{color:#8798ad}.editorial-item h3{font:600 clamp(25px,3vw,36px)/1.18 var(--display);letter-spacing:-.035em;color:var(--blue-night);margin:12px 0 21px}.editorial-item p{max-width:760px;font-size:14px;line-height:1.85;color:#52667e;margin:0 0 12px}
@media(max-width:820px){.page-hero-grid{grid-template-columns:1fr auto;gap:22px}.page-hero-symbol{width:170px;height:170px}.contest-card{padding:17px}.area-item{grid-template-columns:36px 1fr 25px}.area-item small{display:none}.featured-lesson{gap:25px}}
@media(max-width:600px){.page-crumb{padding-block:14px}.page-hero-grid{display:block;min-height:0;padding-block:43px}.page-hero h1{font-size:clamp(42px,12vw,58px)}.page-hero p:not(.eyebrow){font-size:12px}.page-hero-symbol{display:none}.page-section{padding-block:48px 58px}.page-section-title{align-items:start;flex-direction:column;gap:7px}.contest-grid{grid-template-columns:1fr}.contest-card{min-height:230px;border-right:0;border-bottom:1px solid var(--line)}.contest-card:last-child{border-bottom:0}.contest-top{margin-bottom:18px}.contest-card p{margin-bottom:20px}.step-grid{grid-template-columns:repeat(2,1fr)}.step-card:nth-child(2){border-right:0}.step-card:nth-child(-n+2){border-bottom:1px solid #cbddec}.area-item{min-height:70px}.area-item strong{font-size:14px}.featured-lesson{grid-template-columns:1fr}.lesson-diagram{min-height:225px}.mini-grid{height:120px;width:120px}.full-problem{display:block;padding-block:24px}.full-problem h3{font-size:21px;margin-bottom:11px}.full-problem>p{font-size:12px}.full-problem-disclosures{margin-top:17px;display:block}.full-problem-disclosures details+details{margin-top:12px}.editorial-item{display:block;padding-block:28px}.editorial-item h3{font-size:26px}.editorial-item p{font-size:12px}}

.page-hero-symbol{gap:0}
.contest-top{justify-content:flex-end}
.step-card{min-height:100px;justify-content:center}
.area-item{grid-template-columns:minmax(190px,.7fr) minmax(0,1.2fr) 24px}
.editorial-item{display:block;padding-left:min(15%,150px)}
@media(max-width:820px){.area-item{grid-template-columns:1fr 25px}.editorial-item{padding-left:0}}

.standalone-practice{max-width:820px}.standalone-practice>.text-link{margin-top:24px}.standalone-practice .quiz-card{padding:32px}.standalone-practice .quiz-card h3{font-size:24px}.standalone-practice .quiz-options button{font-size:13px}.about-copy{max-width:760px}.about-copy h2{font-size:32px;color:var(--blue-night)}.about-copy p{color:var(--muted);font-size:16px;line-height:1.9}.about-copy .button{margin-top:12px}.section-destinations{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.section-destination{display:flex;flex-direction:column;padding:26px;border:1px solid var(--line);transition:background .15s,border-color .15s}.section-destination:hover{border-color:var(--blue);background:var(--mist)}.section-destination h3{margin:24px 0 10px;color:var(--blue-night);font-size:21px}.section-destination p{color:var(--muted);font-size:14px}.section-destination>span:last-child{margin-top:auto;color:var(--blue);font-size:24px}.full-problem[hidden]{display:none!important}
@media(max-width:820px){.section-destinations{grid-template-columns:1fr}.section-destination{padding:22px}.standalone-practice .quiz-card{padding:22px}.standalone-practice .quiz-card h3{font-size:20px}}