:root{--ssc-bg:#0b0d12;--ssc-panel:#11151d;--ssc-panel2:#171d27;--ssc-line:rgba(255,255,255,.1);--ssc-ink:#f4f2ec;--ssc-muted:#a4a9b3;--ssc-gold:#e9c981;--ssc-green:#b8d8c0;--ssc-red:#e5a4a4;color-scheme:dark}
:root[data-theme="light"]{--ssc-bg:#f4f2ed;--ssc-panel:#fffefa;--ssc-panel2:#eeece5;--ssc-line:rgba(23,26,32,.13);--ssc-ink:#171a20;--ssc-muted:#626873;--ssc-gold:#8b6425;--ssc-green:#386b50;--ssc-red:#a94343;color-scheme:light}
*{box-sizing:border-box}html,body{margin:0;background:var(--ssc-bg);color:var(--ssc-ink);font:15px/1.55 Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif}body{min-height:100vh}.ssc-wrap{width:min(1080px,calc(100% - 36px));margin:38px auto 0}.hero-panel,.practice-panel{border:1px solid var(--ssc-line);border-radius:20px;background:var(--ssc-panel);box-shadow:0 22px 70px #00000012}.hero-panel{padding:clamp(23px,5vw,54px);overflow:hidden;position:relative}.hero-panel:after{content:"";position:absolute;right:-90px;top:-180px;width:500px;height:500px;background:radial-gradient(circle, color-mix(in srgb,var(--ssc-gold) 13%,transparent),transparent 68%);pointer-events:none}.eyebrow{margin:0;color:var(--ssc-gold);font-size:10px;font-weight:800;letter-spacing:.17em}.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1.35fr) minmax(250px,.65fr);gap:50px;align-items:center}h1{font:400 clamp(43px,7vw,76px)/.98 Georgia,"Times New Roman",serif;letter-spacing:-.055em;margin:19px 0 18px}h1 em{color:var(--ssc-gold);font-style:normal}.intro{color:var(--ssc-muted);max-width:650px;font-size:16px;line-height:1.75}.hero-pills{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}.hero-pills span{border:1px solid var(--ssc-line);background:var(--ssc-panel2);border-radius:999px;padding:7px 11px;font-size:11px;color:var(--ssc-muted)}.score-panel{background:var(--ssc-panel2);border:1px solid var(--ssc-line);border-radius:15px;padding:19px}.score-kicker{display:block;font-size:9px;letter-spacing:.14em;color:var(--ssc-muted);font-weight:800}.score-panel>strong{display:block;font:400 25px Georgia,serif;margin:10px 0 14px}.xp-line{display:flex;justify-content:space-between;color:var(--ssc-muted);font-size:11px}.xp-track,.timer-track{height:6px;overflow:hidden;background:var(--ssc-line);border-radius:9px;margin-top:7px}.xp-track span,.timer-track span{display:block;height:100%;width:0;background:var(--ssc-gold);border-radius:inherit;transition:width .35s}.score-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:18px 0}.score-stats div{display:flex;flex-direction:column}.score-stats strong{font-size:20px}.score-stats span,.score-panel small{font-size:10px;color:var(--ssc-muted)}.bank-line{position:relative;z-index:1;display:flex;align-items:center;gap:9px;padding-top:20px;margin-top:22px;border-top:1px solid var(--ssc-line);font-size:12px}.bank-line strong{color:var(--ssc-green)}.bank-line>span:last-child{color:var(--ssc-muted);margin-left:auto}.bank-dot{width:8px;height:8px;flex:none;border-radius:50%;background:var(--ssc-green);box-shadow:0 0 12px color-mix(in srgb,var(--ssc-green) 75%,transparent)}
.practice-panel{margin-top:18px;padding:clamp(21px,4vw,40px)}.section-head{display:flex;align-items:end;justify-content:space-between;gap:25px}.section-head h2{font:400 clamp(27px,4vw,39px)/1.1 Georgia,serif;letter-spacing:-.035em;margin:8px 0 0}.section-head>p{max-width:370px;color:var(--ssc-muted);font-size:12px;margin:0}.controls-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-top:25px}.controls-grid label{font-size:10px;font-weight:750;color:var(--ssc-muted);letter-spacing:.02em}.controls-grid select{display:block;width:100%;height:44px;margin-top:7px;padding:0 11px;border:1px solid var(--ssc-line);border-radius:9px;background:var(--ssc-panel2);color:var(--ssc-ink);font:500 12px/1.4 Inter,ui-sans-serif,system-ui,sans-serif;letter-spacing:normal}.round-actions{display:flex;align-items:center;gap:16px;margin-top:18px}.primary-button,.secondary-button{display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:45px;padding:0 17px;border:1px solid var(--ssc-gold);border-radius:9px;background:var(--ssc-gold);color:#17140e;font:750 12px/1.2 Inter,ui-sans-serif,system-ui,sans-serif;cursor:pointer;transition:transform .2s,filter .2s}.primary-button:hover,.secondary-button:hover{transform:translateY(-2px);filter:brightness(1.05)}button:disabled{opacity:.55;cursor:wait;transform:none}.round-note{font-size:11px;color:var(--ssc-muted)}.quiz-shell,.result-panel{margin-top:27px;padding-top:24px;border-top:1px solid var(--ssc-line)}.quiz-top{display:flex;align-items:center;justify-content:space-between}.quiz-top strong,.quiz-top span{display:block}.quiz-top strong{font-size:14px}.quiz-top span{font-size:10px;color:var(--ssc-muted);margin-top:3px}.timer{font-variant-numeric:tabular-nums;font-size:24px;font-weight:800;color:var(--ssc-gold)}.timer-track{margin-top:14px}.timer-track span{background:var(--ssc-green)}.question-list{display:grid;gap:13px;margin-top:18px}.question-card{border:1px solid var(--ssc-line);border-radius:13px;padding:17px;background:var(--ssc-panel2)}.question-card-head{display:flex;gap:10px;align-items:start}.q-number{flex:none;color:var(--ssc-gold);font-size:10px;font-weight:850;letter-spacing:.06em}.q-subject{margin-left:auto;color:var(--ssc-muted);font-size:9px;text-align:right}.q-text{font-size:14px;font-weight:650;line-height:1.65;margin:8px 0 12px}.hi{display:block;color:var(--ssc-muted);font-weight:500}.options{display:grid;grid-template-columns:1fr 1fr;gap:8px}.option-button{display:flex;gap:10px;align-items:start;text-align:left;min-height:42px;padding:9px 11px;border:1px solid var(--ssc-line);border-radius:9px;background:var(--ssc-panel);color:var(--ssc-ink);font:500 12px/1.5 Inter,ui-sans-serif,system-ui,sans-serif;cursor:pointer}.option-button:hover{border-color:var(--ssc-gold)}.option-button.selected{border-color:var(--ssc-gold);background:color-mix(in srgb,var(--ssc-gold) 12%,var(--ssc-panel))}.option-letter{color:var(--ssc-gold);font-weight:850}.quiz-actions{display:flex;align-items:center;gap:15px;margin-top:15px}.secondary-button{background:transparent;border-color:var(--ssc-line);color:var(--ssc-ink)}.quiz-actions span{font-size:10px;color:var(--ssc-muted)}.result-head{display:flex;align-items:center;justify-content:space-between;gap:15px}.result-head h3{font:400 32px/1.1 Georgia,serif;margin:7px 0}.result-head p:not(.eyebrow){color:var(--ssc-muted);font-size:12px;margin:0}.result-score{text-align:right;white-space:nowrap}.result-score strong,.result-score span{display:block}.result-score strong{font-size:27px;color:var(--ssc-gold)}.result-score span{font-size:11px;color:var(--ssc-green);font-weight:750}.review-list{display:grid;gap:11px;margin:20px 0}.review-item{border:1px solid var(--ssc-line);border-radius:11px;padding:14px;background:var(--ssc-panel2)}.review-item.correct{border-left:3px solid var(--ssc-green)}.review-item.incorrect{border-left:3px solid var(--ssc-red)}.review-question{font-size:12px;font-weight:750;line-height:1.6}.review-meta,.review-solution{font-size:11px;color:var(--ssc-muted);margin-top:7px}.review-meta strong{color:var(--ssc-ink)}.review-solution{line-height:1.65}.source-link{display:inline-block;margin-top:8px;color:var(--ssc-gold);font-size:10px;font-weight:700;text-decoration:underline;text-underline-offset:3px}.practice-foot{margin:23px 0 0;color:var(--ssc-muted);font-size:10px;line-height:1.7}.ssc-footer{display:flex;justify-content:space-between;gap:12px;padding:20px 3px 30px;color:var(--ssc-muted);font-size:10px}.ssc-footer a{color:var(--ssc-ink);text-decoration:none}.ssc-footer a:hover{color:var(--ssc-gold)}[hidden]{display:none!important}
@media(max-width:800px){.hero-grid{grid-template-columns:1fr;gap:22px}.score-panel{max-width:none}.controls-grid{grid-template-columns:1fr 1fr}.section-head{align-items:start;flex-direction:column;gap:9px}}
@media(max-width:520px){.ssc-wrap{width:calc(100% - 22px);margin-top:16px}.hero-panel,.practice-panel{border-radius:15px}.hero-panel{padding:23px 18px}.practice-panel{padding:22px 16px}.bank-line{align-items:flex-start;flex-wrap:wrap}.bank-line>span:last-child{width:100%;margin-left:17px}.controls-grid{grid-template-columns:1fr}.round-actions{align-items:flex-start;flex-direction:column;gap:10px}.options{grid-template-columns:1fr}.question-card{padding:13px}.q-text{font-size:13px}.ssc-footer{flex-direction:column}.result-head{align-items:flex-start}.result-score strong{font-size:23px}}
.timer.urgent{color:var(--ssc-red);animation:ssc-pulse 1s ease-in-out infinite}.question-card img,.review-item img{max-width:min(100%,520px);height:auto;vertical-align:middle}.question-card table,.review-item table{max-width:100%;border-collapse:collapse}.question-card td,.question-card th,.review-item td,.review-item th{border:1px solid var(--ssc-line);padding:4px 7px}@keyframes ssc-pulse{50%{opacity:.55}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}