:root{color-scheme:dark;--bg:#0b1120;--panel:#111b2d;--panel-2:#14213a;--card:#14284d;--card-alt:#1b3159;--line:#273650;--line-soft:#223049;--text:#f4f7ff;--muted:#a5b3ca;--subtle:#7c8da8;--blue:#477cfa;--blue-bright:#79a6ff;--blue-soft:#172e59;--mint:#76e4c0;--green:#62d3a7;--amber:#f2bf72;--danger:#ef999d;--shadow:0 24px 65px rgba(1,7,22,.28)}
html[data-theme="light"]{color-scheme:light;--bg:#f4f7fc;--panel:#fff;--panel-2:#f5f8fe;--card:#eef4ff;--card-alt:#dfeafa;--line:#d7e0ee;--line-soft:#e3e9f3;--text:#14213a;--muted:#566580;--subtle:#667792;--blue:#285add;--blue-bright:#1e55d5;--blue-soft:#e6eeff;--mint:#067b60;--green:#087d5e;--amber:#a66512;--danger:#b72d38;--shadow:0 19px 48px rgba(28,57,114,.12)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;line-height:1.55;min-height:100vh;display:flex;flex-direction:column}
button,input{font:inherit}
button{cursor:pointer}
button:disabled{opacity:.43;cursor:not-allowed}
a{color:inherit}
[hidden]{display:none!important}
:focus-visible{outline:3px solid var(--blue-bright);outline-offset:3px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-link{position:absolute;left:12px;top:-80px;z-index:50;background:#fff;color:#111;padding:12px;border-radius:6px}.skip-link:focus{top:12px}
.site-header{border-bottom:1px solid var(--line-soft);background:var(--panel);position:relative;z-index:5}
.header-inner{max-width:1380px;margin:auto;padding:14px clamp(20px,4vw,54px);min-height:84px;display:flex;align-items:center;gap:36px}
.brand{text-decoration:none;display:flex;align-items:center;gap:12px;flex:none}
.brand-mark{display:flex;align-items:center;justify-content:center;position:relative;width:42px;height:42px;border-radius:11px;background:linear-gradient(145deg,#3d74fa,#2653c8);font-weight:900;font-size:25px;letter-spacing:-.14em;padding-right:3px;color:white;box-shadow:0 5px 18px rgba(32,90,243,.27)}
.brand-mark span{font-size:16px;color:#b2ccff;align-self:flex-end;padding-bottom:6px;padding-left:2px}
.brand-copy{display:flex;flex-direction:column;line-height:1.25;gap:3px}.brand-copy strong{font-size:15px;letter-spacing:.12em}.brand-copy small{font-size:12px;color:var(--subtle)}
.main-nav{display:flex;align-items:center;gap:4px;margin:auto}.nav-link{text-decoration:none;color:var(--muted);padding:11px 18px;border-radius:9px;font-size:14px;font-weight:650;transition:background .18s,color .18s}.nav-link:hover{background:var(--panel-2);color:var(--text)}.nav-link.active{color:var(--text);background:var(--blue-soft);box-shadow:inset 0 0 0 1px rgba(99,145,242,.2)}
.header-actions{display:flex;align-items:center;gap:20px}.portfolio-link{white-space:nowrap;text-decoration:none;font-size:14px;color:var(--muted);font-weight:600}.portfolio-link:hover{color:var(--text)}.portfolio-link span{font-size:16px;margin-left:4px}
.icon-button{background:var(--panel-2);color:var(--text);border:1px solid var(--line);border-radius:10px;height:38px;min-width:38px;display:grid;place-items:center;font-size:17px}.icon-button:hover{border-color:var(--blue-bright)}
.page-shell{max-width:1380px;width:100%;padding:0 clamp(20px,4vw,54px) 70px;margin:0 auto;flex:1}
.intro{display:flex;justify-content:space-between;align-items:end;gap:32px;padding:45px 0 38px}.eyebrow,.panel-kicker{font-size:11px;font-weight:800;letter-spacing:.17em;color:var(--blue-bright);margin:0;text-transform:uppercase}.eyebrow{display:flex;align-items:center;gap:12px}.eyebrow-line{height:2px;width:22px;background:var(--blue-bright);display:inline-block}.eyebrow-sep{color:var(--subtle)}.intro h1{font-size:clamp(35px,4vw,58px);letter-spacing:-.047em;line-height:1.1;font-weight:760;margin:14px 0 12px}.intro h1 em{font-style:normal;color:var(--blue-bright)}.intro-description{font-size:16px;color:var(--muted);margin:0;max-width:680px}.intro-number{flex:none;text-align:right;display:flex;flex-direction:column;line-height:1;margin:0 4px 5px 0}.intro-number strong{font-size:clamp(42px,5vw,72px);font-weight:750;letter-spacing:-.055em;color:var(--text)}.intro-number>span{font-size:11px;letter-spacing:.2em;color:var(--subtle);font-weight:800;margin-top:8px}.dot-separator{margin:0 7px;color:var(--blue)}
.workspace{display:grid;grid-template-columns:270px minmax(0,1fr);gap:22px;align-items:start}.deck-panel,.content-area{border:1px solid var(--line-soft);background:var(--panel);border-radius:16px;box-shadow:0 12px 40px rgba(3,8,23,.08)}.deck-panel{padding:23px 15px 19px;position:sticky;top:18px}.panel-heading{display:flex;justify-content:space-between;align-items:center;margin:0 10px 20px}.panel-heading h2{font-size:17px;letter-spacing:-.02em;margin:4px 0 0}.panel-heading-icon{color:var(--blue-bright);font-size:22px;line-height:1}
.deck-list{display:grid;gap:6px}.deck-option{border:1px solid transparent;text-align:left;width:100%;display:flex;gap:12px;align-items:center;border-radius:11px;padding:11px 10px;color:var(--muted);background:transparent}.deck-option:hover{background:var(--panel-2);color:var(--text)}.deck-option.selected{background:var(--blue-soft);color:var(--text);border-color:rgba(96,144,249,.24)}.deck-icon{display:flex;align-items:center;justify-content:center;flex:none;width:37px;height:37px;border-radius:9px;font-size:12px;font-weight:850;letter-spacing:-.01em;background:var(--panel-2);color:var(--blue-bright)}.deck-option.selected .deck-icon{background:var(--blue);color:#fff}.deck-text{display:flex;flex-direction:column;min-width:0;line-height:1.35;gap:2px}.deck-text strong{font-size:14px;font-weight:650;white-space:nowrap}.deck-text small{font-size:12px;color:var(--subtle)}
.aside-progress{padding:22px 10px 2px;margin-top:23px;border-top:1px solid var(--line-soft)}.progress-summary{display:flex;align-items:baseline;gap:5px;margin:10px 0 11px}.progress-summary strong{font-size:27px;line-height:1;font-weight:760}.progress-summary span{font-size:13px;color:var(--muted)}.progress-track,.card-progress-track{height:7px;background:var(--line);border-radius:99px;overflow:hidden}.progress-track>span,.card-progress-track>span{height:100%;display:block;width:0;background:linear-gradient(90deg,#4279f6,#83adff);border-radius:inherit;transition:width .25s}.progress-note{color:var(--subtle);font-size:12px;margin:10px 0 0}
.content-area{padding:clamp(22px,3vw,35px);min-height:682px}.view-header{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:25px}.view-header h2{font-size:clamp(24px,2.6vw,31px);margin:5px 0 0;letter-spacing:-.035em;line-height:1.2}.view-header-note{margin:0 0 3px;color:var(--subtle);font-size:13px}.study-toolbar{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:13px}.study-position{display:flex;align-items:baseline;gap:12px}.study-position strong{font-size:14px;font-weight:750}.study-position span{font-size:13px;color:var(--subtle)}.toolbar-actions{display:flex;gap:8px}.text-button{background:transparent;border:1px solid var(--line);color:var(--muted);border-radius:8px;padding:7px 11px;font-size:13px;font-weight:650}.text-button:hover,.text-button[aria-pressed="true"]{border-color:var(--blue);color:var(--blue-bright);background:var(--blue-soft)}.text-button span{font-size:16px;margin-right:3px}
.card-progress-track{height:4px;margin-bottom:20px}.card-stage{position:relative}.card-stage:before,.card-stage:after{content:"";position:absolute;height:15px;left:15px;right:15px;bottom:-10px;background:var(--card-alt);border:1px solid var(--line);border-radius:0 0 15px 15px}.card-stage:after{left:30px;right:30px;bottom:-17px;height:8px;opacity:.57;z-index:-1}.study-card{position:relative;width:100%;min-height:358px;padding:26px 31px;display:flex;flex-direction:column;justify-content:space-between;text-align:left;overflow:hidden;color:var(--text);background:linear-gradient(125deg,var(--card),var(--card-alt));border:1px solid #41618e;border-radius:15px;box-shadow:var(--shadow);transition:transform .22s,border-color .2s;isolation:isolate}.study-card:hover{transform:translateY(-2px);border-color:#6691d4}.study-card:active{transform:translateY(0)}html[data-theme="light"] .study-card{border-color:#b9ccef}
.study-card:before{content:"";position:absolute;right:-110px;top:-150px;width:400px;height:400px;border:1px solid rgba(157,191,255,.13);border-radius:50%;box-shadow:0 0 0 45px rgba(139,177,255,.035),0 0 0 100px rgba(139,177,255,.025);z-index:-1}.study-card:after{content:"";position:absolute;left:-70px;bottom:-160px;width:320px;height:320px;border:1px solid rgba(157,191,255,.1);border-radius:50%;z-index:-1}
.card-top,.card-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;font-size:11px;font-weight:800;letter-spacing:.16em;color:#a8c5f8}html[data-theme="light"] .card-top,html[data-theme="light"] .card-bottom{color:#385991}.card-corner{font-variant-numeric:tabular-nums;white-space:nowrap;color:#a8bedf}.card-center{display:flex;flex-direction:column;align-items:flex-start;padding:27px 0;max-width:790px}.card-prompt{font-size:12px;font-weight:800;letter-spacing:.14em;color:var(--mint);margin-bottom:14px}.card-main-text{font-size:clamp(27px,3.8vw,45px);font-weight:700;line-height:1.22;letter-spacing:-.035em;overflow-wrap:anywhere}.study-card.is-flipped .card-main-text{font-size:clamp(18px,2.15vw,27px);line-height:1.45;letter-spacing:-.012em;font-weight:560}.card-topic{font-size:13px;color:#abc4ec;margin-top:15px}.card-topic:empty{display:none}html[data-theme="light"] .card-topic{color:#526a95}.flip-hint{text-transform:none;letter-spacing:0;font-size:12px;font-weight:600;color:#afc7ed}.flip-icon{font-size:17px;vertical-align:-1px;margin-right:4px}
.card-controls{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:32px}.secondary-button,.primary-button,.learn-button{border-radius:9px;min-height:43px;padding:10px 17px;font-size:14px;font-weight:700;display:inline-flex;justify-content:center;align-items:center;gap:9px;transition:background .2s,transform .2s,color .2s,border-color .2s}.secondary-button:hover:not(:disabled),.primary-button:hover:not(:disabled),.learn-button:hover:not(:disabled){transform:translateY(-1px)}.secondary-button{color:var(--text);background:transparent;border:1px solid var(--line)}.secondary-button:hover{background:var(--panel-2)}.primary-button{color:#fff;background:var(--blue);border:1px solid var(--blue);box-shadow:0 5px 16px rgba(34,91,233,.25)}.primary-button:hover{background:#356af0}.learn-button{background:transparent;border:1px solid var(--line);color:var(--muted)}.learn-button:hover{color:var(--green);border-color:var(--green)}.learn-button.learned{background:rgba(56,191,141,.12);border-color:var(--green);color:var(--green)}.keyboard-tip{font-size:12px;color:var(--subtle);text-align:center;margin:28px 0 3px}kbd{display:inline-block;border:1px solid var(--line);border-radius:4px;padding:1px 5px;color:var(--muted);font-size:11px;background:var(--panel-2);font-family:inherit}
.empty-state{padding:60px 25px;text-align:center;border:1px dashed var(--line);border-radius:14px}.empty-state h3{margin:0 0 7px;font-size:24px}.empty-state p{color:var(--muted);margin:0 0 24px}
.practice-start,.practice-finish{position:relative;padding:68px min(8vw,65px);background:linear-gradient(135deg,var(--card),var(--card-alt));border:1px solid var(--line);border-radius:14px;overflow:hidden}.practice-start:after,.practice-finish:after{content:"";position:absolute;right:-75px;top:-145px;width:390px;height:390px;border:1px solid rgba(157,191,255,.14);border-radius:50%;box-shadow:0 0 0 60px rgba(158,192,255,.025);pointer-events:none}.practice-glyph{display:grid;place-items:center;width:46px;height:46px;border:1px solid var(--blue-bright);border-radius:12px;color:var(--blue-bright);font-size:24px;font-weight:800;margin-bottom:26px}.practice-start h3,.practice-finish h3{font-size:clamp(28px,3.6vw,42px);letter-spacing:-.04em;line-height:1.18;margin:12px 0 13px}.practice-start>p:not(.eyebrow),.practice-finish>p:not(.eyebrow){color:var(--muted);font-size:15px;max-width:560px;margin:0 0 25px}.practice-meta{display:flex;justify-content:space-between;gap:12px;font-size:14px;margin:3px 0 14px}.practice-meta span{color:var(--muted)}.question-card{padding:30px;background:var(--panel-2);border:1px solid var(--line);border-radius:14px}.question-card h3{font-size:clamp(18px,2.1vw,24px);font-weight:630;line-height:1.46;max-width:760px;margin:17px 0 27px}.answer-options{display:grid;grid-template-columns:1fr 1fr;gap:11px}.answer-option{padding:15px 16px;min-height:67px;text-align:left;display:flex;align-items:center;gap:12px;border:1px solid var(--line);border-radius:10px;background:var(--panel);color:var(--text);font-size:14px;font-weight:600;line-height:1.35}.answer-option:hover:not(:disabled){border-color:var(--blue-bright);background:var(--blue-soft)}.answer-option.correct{border-color:var(--green);background:rgba(48,170,118,.12)}.answer-option.wrong{border-color:var(--danger);background:rgba(208,70,80,.1)}.option-letter{flex:none;width:27px;height:27px;border:1px solid var(--line);border-radius:6px;display:grid;place-items:center;font-size:12px;color:var(--muted)}.answer-feedback{padding:15px 17px;margin:22px 0;border-radius:9px;border:1px solid var(--line);background:var(--panel);font-size:14px}.answer-feedback strong{display:block;margin-bottom:3px}.answer-feedback.correct strong{color:var(--green)}.answer-feedback.wrong strong{color:var(--danger)}#next-question{margin-top:0}.finish-score{font-size:clamp(52px,7vw,88px);font-weight:750;letter-spacing:-.05em;line-height:1;color:var(--blue-bright);margin-bottom:18px}
.search-field{display:flex;align-items:center;gap:12px;padding:0 15px;height:49px;background:var(--panel-2);border:1px solid var(--line);border-radius:9px;color:var(--subtle)}.search-field:focus-within{border-color:var(--blue-bright);box-shadow:0 0 0 3px rgba(54,111,244,.16)}.search-field input{background:transparent;border:0;outline:0;color:var(--text);flex:1;min-width:0;font-size:15px}.search-field input::placeholder{color:var(--subtle)}.alphabet{display:flex;flex-wrap:wrap;gap:4px;margin:16px 0 20px}.letter-button{min-width:29px;height:30px;border:0;border-radius:5px;background:transparent;color:var(--subtle);font-size:12px;font-weight:750}.letter-button:hover:not(:disabled){background:var(--panel-2);color:var(--text)}.letter-button.active{background:var(--blue-soft);color:var(--blue-bright)}.letter-button:disabled{opacity:.34}.letter-button:first-child{min-width:37px}.glossary-results{display:grid;gap:9px}.term-entry{padding:17px 19px;background:var(--panel-2);border:1px solid var(--line-soft);border-radius:10px}.term-entry-header{display:flex;align-items:baseline;gap:12px;justify-content:space-between}.term-entry h3{font-size:16px;font-weight:740;margin:0;letter-spacing:-.013em}.term-entry .term-source{font-size:11px;color:var(--blue-bright);font-weight:750;white-space:nowrap}.term-entry p{font-size:14px;color:var(--muted);margin:7px 0 0;line-height:1.55}.term-entry .term-topic{font-size:12px;color:var(--subtle);margin-top:8px}.load-more{margin:22px auto 0;display:flex}.no-results{padding:45px 12px;color:var(--muted);text-align:center;border:1px dashed var(--line);border-radius:10px}.no-results strong{display:block;color:var(--text);font-size:19px;margin-bottom:5px}
.site-footer{max-width:1380px;width:100%;margin:0 auto;padding:22px clamp(20px,4vw,54px) 32px;border-top:1px solid var(--line-soft);display:flex;justify-content:space-between;gap:15px;font-size:11px;font-weight:720;letter-spacing:.1em;color:var(--subtle)}.footer-dot{color:var(--blue-bright);margin:0 5px}
:root{--bg:#1b1d1f;--panel:#252729;--panel-2:#2d3033;--card:#06273e;--card-alt:#075684;--line:#444a4e;--line-soft:#383d40;--text:#fafcff;--muted:#c1ccd4;--subtle:#93a5b0;--blue:#0d9fdf;--blue-bright:#32beff;--blue-soft:#113d58;--mint:#84e8ff;--green:#6ae0bd;--shadow:0 22px 58px rgba(0,10,18,.35)}
html[data-theme="light"]{--bg:#edf4f8;--panel:#fff;--panel-2:#f2f8fb;--card:#e4f3ff;--card-alt:#c6e8f8;--line:#c2d2dc;--line-soft:#d4e1e8;--text:#183341;--muted:#4d6572;--subtle:#627c8a;--blue:#008dcc;--blue-bright:#006d9d;--blue-soft:#dbf2fd;--mint:#077d9a;--green:#068462;--shadow:0 18px 45px rgba(20,72,101,.13)}
.brand-mark{width:43px;height:43px;font-size:17px;letter-spacing:-.08em;background:linear-gradient(135deg,#0877b0,#16bdf7);box-shadow:0 5px 18px rgba(0,158,228,.25)}
.brand-mark span{font-size:12px;color:#d8f6ff;padding-left:0}
.intro{position:relative;overflow:hidden;isolation:isolate;min-height:204px;margin:28px 0 21px;padding:27px 34px 26px;background:linear-gradient(100deg,rgba(7,22,34,.88),rgba(0,113,177,.72) 46%,rgba(5,23,37,.9)),linear-gradient(rgba(2,14,24,.77) 1px,transparent 1px),linear-gradient(90deg,rgba(2,14,24,.77) 1px,transparent 1px),#0d527e;background-size:auto,40px 40px,40px 40px,auto;border:1px solid #2b779c;border-radius:16px;box-shadow:0 22px 50px rgba(2,47,72,.14)}
.intro h1{font-size:clamp(30px,3.7vw,50px);color:white;max-width:730px}.intro h1 em{color:#89e4ff}.intro-description{color:#e9f6fd;max-width:660px}.intro .eyebrow{color:#91e0ff}.intro .eyebrow-line{background:#91e0ff}.intro-number strong{color:#fff}.intro-number>span{color:#d3e9f5}
html[data-theme="light"] .intro h1,html[data-theme="light"] .intro h1 em,html[data-theme="light"] .intro-description,html[data-theme="light"] .intro .eyebrow,html[data-theme="light"] .intro-number strong,html[data-theme="light"] .intro-number>span{color:#fff}
.deck-panel{max-height:calc(100vh - 36px);overflow:auto;scrollbar-width:thin;scrollbar-color:#4a626f transparent}
.deck-group-label{font-size:10px;line-height:1.2;font-weight:850;letter-spacing:.16em;text-transform:uppercase;color:var(--subtle);padding:16px 10px 4px;margin:0}.deck-group-label:first-of-type{padding-top:13px}
.deck-option.selected .deck-icon{background:var(--blue);color:white}.nav-link.active{color:var(--blue-bright)}.panel-kicker,.eyebrow{color:var(--blue-bright)}
.study-card{background:linear-gradient(120deg,rgba(4,26,43,.94),rgba(4,78,124,.83) 53%,rgba(5,31,49,.94)),linear-gradient(rgba(0,9,19,.72) 1px,transparent 1px),linear-gradient(90deg,rgba(0,9,19,.72) 1px,transparent 1px),#105b8d;background-size:auto,39px 39px,39px 39px,auto;border-color:#397da2}
html[data-theme="light"] .study-card{background:linear-gradient(130deg,#e9f5ff,#c8e9fa);border-color:#b4d1df}
.card-top,.card-bottom{color:#a9e4ff}.card-corner,.flip-hint,.card-topic{color:#c1e3f4}.card-prompt{color:#85efff}
html[data-theme="light"] .card-top,html[data-theme="light"] .card-bottom{color:#23647f}html[data-theme="light"] .card-topic,html[data-theme="light"] .card-corner,html[data-theme="light"] .flip-hint{color:#4e7084}
.primary-button{background:var(--blue);border-color:var(--blue);box-shadow:0 5px 16px rgba(6,156,223,.22)}.primary-button:hover{background:#0c89c7}
.topic-filter{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 13px;margin:-7px 0 17px;border:1px solid #2f799c;border-radius:9px;background:var(--blue-soft);color:var(--text);font-size:13px;font-weight:700}
.topic-filter button{border:0;background:transparent;color:var(--blue-bright);font-size:20px;line-height:1;font-weight:700;white-space:nowrap}.topic-filter button span{font-size:12px;vertical-align:2px}
.concepts-intro{color:var(--muted);font-size:15px;max-width:700px;margin:-4px 0 24px}.concepts-list{display:grid;gap:13px}
.concept-deck{background:var(--panel-2);border:1px solid var(--line);border-radius:12px;overflow:hidden}.concept-deck[open]{border-color:#3b7896}
.concept-deck summary{list-style:none;cursor:pointer;padding:16px 20px;display:flex;align-items:center;justify-content:space-between;gap:14px}.concept-deck summary::-webkit-details-marker{display:none}.concept-deck summary:hover{background:rgba(25,177,240,.05)}
.concept-summary-title{display:flex;align-items:center;gap:13px;min-width:0}.concept-summary-title strong{font-size:17px;line-height:1.25}.concept-badge{width:38px;height:38px;display:grid;place-items:center;border-radius:9px;color:var(--blue-bright);background:var(--blue-soft);font-size:12px;font-weight:850;flex:none}.concept-summary-meta{font-size:12px;color:var(--subtle);font-weight:650;white-space:nowrap}.concept-summary-meta:after{content:'⌄';font-size:18px;margin-left:14px;color:var(--blue-bright)}.concept-deck[open] .concept-summary-meta:after{content:'⌃'}
.concept-body{padding:0 20px 19px;border-top:1px solid var(--line-soft)}.concept-body>p{color:var(--muted);font-size:14px;margin:16px 0}.concept-topic-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}.concept-topic{min-width:0;min-height:61px;padding:10px 12px;text-align:left;display:flex;align-items:center;gap:11px;background:var(--panel);color:var(--text);border:1px solid var(--line-soft);border-radius:9px}.concept-topic:hover{border-color:var(--blue-bright);background:var(--blue-soft)}.topic-number{font-size:12px;font-weight:780;color:var(--blue-bright)}.topic-label{font-size:14px;font-weight:680;flex:1;line-height:1.25}.topic-count{font-size:11px;color:var(--subtle);white-space:nowrap}.concept-footer{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-top:16px}.concept-footer a{font-size:13px;color:var(--blue-bright);text-decoration:none}.concept-footer a:hover{text-decoration:underline}
.intro{background:linear-gradient(rgba(2,17,28,.77) 1px,transparent 1px),linear-gradient(90deg,rgba(2,17,28,.77) 1px,transparent 1px),linear-gradient(100deg,#0b1c2b 0%,#0872ad 45%,#0a283f 100%);background-size:40px 40px,40px 40px,auto}
.study-card{background:linear-gradient(rgba(1,17,28,.52) 1px,transparent 1px),linear-gradient(90deg,rgba(1,17,28,.52) 1px,transparent 1px),linear-gradient(120deg,#09283e,#0a6195 55%,#082a43);background-size:39px 39px,39px 39px,auto}
.concepts-intro,.concept-body>p,.term-entry p:not(.term-topic),.answer-option{font-size:16px}
.glossary-header-actions{display:flex;align-items:center;gap:14px}.glossary-header-actions .view-header-note{margin:0;white-space:nowrap}.glossary-header-actions .secondary-button{white-space:nowrap}
@media(max-width:1040px){.header-inner{gap:16px}.main-nav{margin-left:auto;margin-right:0}.nav-link{padding:10px 12px}.portfolio-link{display:none}.workspace{grid-template-columns:230px minmax(0,1fr)}.deck-text strong{white-space:normal}.content-area{padding:23px}.intro{padding:25px 28px}}
@media(max-width:760px){.header-inner{flex-wrap:wrap;padding-top:12px;padding-bottom:0;gap:8px 12px}.brand{margin-right:auto}.main-nav{order:3;width:100%;justify-content:space-between;overflow-x:auto}.nav-link{flex:1;text-align:center;white-space:nowrap;border-radius:9px 9px 0 0;padding:12px 6px}.header-actions{gap:0}.intro{align-items:start;min-height:0;margin-top:18px;padding:27px 24px}.intro-number{display:none}.intro h1{font-size:39px}.intro-description{font-size:15px}.workspace{display:block}.deck-panel{position:static;max-height:none;overflow:visible;margin-bottom:14px;padding:17px}.panel-heading{margin:0 4px 12px}.deck-list{display:flex;overflow-x:auto;gap:7px;padding-bottom:3px;scrollbar-width:thin}.deck-group-label{display:none}.deck-option{width:auto;flex:none;padding:9px 11px}.deck-text strong{white-space:nowrap}.deck-text small{display:none}.deck-icon{width:29px;height:29px}.aside-progress{display:none}.content-area{min-height:600px}.view-header-note{display:none}.study-card{min-height:320px;padding:22px}.card-main-text{font-size:32px}.study-card.is-flipped .card-main-text{font-size:20px}.answer-options{grid-template-columns:1fr}.practice-start,.practice-finish{padding:40px 25px}}
@media(max-width:600px){.concept-topic-grid{grid-template-columns:1fr}.concept-deck summary{align-items:flex-start;flex-direction:column;gap:5px}.concept-summary-meta{padding-left:51px}.concept-footer{align-items:flex-start;flex-direction:column}}
@media(max-width:490px){.page-shell{padding-left:15px;padding-right:15px}.brand-copy small{font-size:11px}.intro{padding:23px 19px}.intro h1{font-size:33px}.intro-description{font-size:16px}.eyebrow{font-size:10px;gap:7px;letter-spacing:.12em}.content-area{padding:17px}.deck-panel{padding:15px 12px}.study-toolbar{align-items:start;flex-wrap:wrap}.toolbar-actions{width:100%}.text-button{flex:1}.card-stage:before{bottom:-8px}.study-card{min-height:330px;padding:19px}.card-main-text{font-size:29px}.study-card.is-flipped .card-main-text{font-size:19px}.card-controls{display:grid;grid-template-columns:1fr 1fr;gap:8px}.learn-button{grid-column:1/-1;grid-row:1}.card-controls button{padding-left:8px;padding-right:8px}.keyboard-tip{display:none}.study-position{flex-wrap:wrap;gap:4px 9px}.question-card{padding:19px}.term-entry-header{display:block}.term-entry .term-source{display:block;margin-top:5px}.site-footer{display:block;font-size:10px}.site-footer span{display:block;margin-bottom:6px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}
@media(max-width:490px){.glossary-view-header{align-items:flex-start;flex-direction:column;gap:12px}.glossary-header-actions{width:100%;justify-content:flex-start}}