:root{color:#181818;font-synthesis:none;text-rendering:optimizelegibility;--ink:#181818;--muted:#686868;--line:#dedede;--surface:#fff;--teal:#1b1b1b;--teal-dark:#000;--teal-soft:#efefef;--coral:#4b4b4b;--amber:#747474;--shadow:0 18px 50px #00000014;background:#f3f3f2;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}html{background:#f3f3f2}body{-webkit-font-smoothing:antialiased;min-width:320px;min-height:100vh;margin:0;line-height:1.5}button,input{font:inherit}button{min-height:44px;color:inherit}button:focus-visible,input:focus-visible{outline-offset:2px;outline:3px solid #8a8a8a}.app{min-height:100vh}.topbar{z-index:20;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);background:#fafafaeb;border-bottom:1px solid #dadadae6;grid-template-columns:1fr auto 1fr;align-items:center;gap:24px;min-height:78px;padding:12px max(24px,50vw - 620px);display:grid;position:sticky;top:0}.brand{text-align:left;cursor:pointer;background:0 0;border:0;align-items:center;gap:12px;padding:0;display:flex}.brand-mark{color:#fff;letter-spacing:-.04em;background:linear-gradient(145deg,#303030,#080808);border-radius:15px;place-items:center;width:48px;height:48px;font-weight:900;display:grid;box-shadow:0 10px 24px #0003}.brand strong,.brand small{display:block}.brand strong{font-size:15px}.brand small{color:var(--muted);margin-top:2px;font-size:11px}.topbar nav{border:1px solid var(--line);background:#fff;border-radius:12px;padding:4px;display:flex}.topbar nav button{color:var(--muted);cursor:pointer;background:0 0;border:0;border-radius:9px;padding:9px 18px;font-weight:700}.topbar nav button.active{background:var(--ink);color:#fff}.account-area{justify-self:end;align-items:center;gap:8px;display:flex}.sync-dot{background:#bdbdbd;border-radius:50%;width:8px;height:8px}.sync-dot.online{background:#222;box-shadow:0 0 0 4px #0000001a}.account-button{cursor:pointer;text-align:left;background:0 0;border:0;align-items:center;gap:9px;display:flex}.account-button>span:first-child{width:38px;height:38px;color:var(--teal-dark);background:#ededed;border-radius:50%;place-items:center;font-weight:900;display:grid}.account-copy strong,.account-copy small{text-overflow:ellipsis;white-space:nowrap;max-width:190px;display:block;overflow:hidden}.account-copy strong{font-size:12px}.account-copy small{color:var(--muted);font-size:10px}.page-shell{width:min(1240px,100% - 40px);margin:0 auto;padding:42px 0 72px}.hero-grid{grid-template-columns:1.6fr .8fr;gap:20px;display:grid}.hero-card,.readiness-card,.panel,.question-card,.completion-card{border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow);border-radius:26px}.hero-card{background:radial-gradient(circle at 90% 10%,#00000012,#0000 35%),linear-gradient(135deg,#fff,#f4f4f4);min-height:330px;padding:40px 44px 80px;position:relative;overflow:hidden}.hero-card:after{content:"";border:48px solid #0000000b;border-radius:50%;width:270px;height:270px;position:absolute;bottom:-95px;right:-55px}.eyebrow{color:var(--teal);letter-spacing:.13em;text-transform:uppercase;font-size:11px;font-weight:900}.hero-card h1{letter-spacing:-.03em;max-width:700px;margin:14px 0;font-family:Segoe UI,Arial,sans-serif;font-size:clamp(38px,4vw,54px);font-weight:750;line-height:1.09}.hero-card>p{max-width:590px;color:var(--muted);margin:0;font-size:15px;line-height:1.65}.hero-actions{z-index:1;align-items:center;gap:18px;margin-top:24px;display:flex;position:relative}.primary-button,.dark-button,.outline-button,.text-button,.back-button,.unsure-button{cursor:pointer;border-radius:12px;padding:12px 18px;font-weight:800}.primary-button{border:1px solid var(--teal);background:var(--teal);color:#fff;box-shadow:0 9px 20px #00000024}.primary-button:hover{background:var(--teal-dark)}.primary-button:disabled{cursor:not-allowed;opacity:.42;box-shadow:none}.text-button{color:var(--teal-dark);background:0 0;border:0;padding-inline:0}.outline-button{border:1px solid var(--line);background:#fff}.dark-button{border:1px solid var(--ink);background:var(--ink);color:#fff;width:100%}.hero-meta{z-index:1;color:var(--muted);flex-wrap:wrap;gap:8px;font-size:11px;display:flex;position:absolute;bottom:26px;left:44px;right:44px}.hero-meta span{-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);background:#ffffffc7;border:1px solid #dcdcdcf2;border-radius:999px;padding:7px 10px}.hero-meta b{color:var(--ink)}.readiness-card{text-align:center;flex-direction:column;justify-content:center;align-items:center;padding:34px;display:flex}.progress-ring{background:conic-gradient(var(--teal) var(--score), #e5e5e5 0);border-radius:50%;place-items:center;width:175px;height:175px;display:grid;position:relative}.progress-ring:before{content:"";background:#fff;border-radius:50%;width:136px;height:136px;position:absolute}.progress-ring div{z-index:1;position:relative}.progress-ring strong,.progress-ring span{display:block}.progress-ring strong{font-family:Segoe UI,Arial,sans-serif;font-size:42px}.progress-ring span{color:var(--muted);text-transform:uppercase;letter-spacing:.1em;font-size:11px;font-weight:800}.status-label{color:var(--teal);text-transform:uppercase;letter-spacing:.1em;margin-top:24px;font-size:11px;font-weight:900;display:block}.readiness-card h2{margin:7px 0 5px;font-size:21px}.readiness-card p{color:var(--muted);margin:0;font-size:12px}.quick-grid{grid-template-columns:repeat(3,1fr);gap:14px;margin:20px 0;display:grid}.quick-card{border:1px solid var(--line);text-align:left;cursor:pointer;background:#fff;border-radius:18px;grid-template-columns:52px 1fr auto;align-items:center;gap:14px;min-height:96px;padding:20px;transition:transform .16s,box-shadow .16s;display:grid}.quick-card:hover{transform:translateY(-2px);box-shadow:0 14px 34px #00000014}.quick-icon{border-radius:14px;place-items:center;width:48px;height:48px;font-weight:900;display:grid}.quick-card.teal .quick-icon{background:var(--teal-soft);color:var(--teal)}.quick-card.coral .quick-icon{color:var(--coral);background:#e8e8e8}.quick-card.amber .quick-icon{color:#555;background:#f5f5f5;border:1px solid #ddd}.quick-card strong,.quick-card small{display:block}.quick-card strong{font-size:14px;line-height:1.35}.quick-card small{color:var(--muted);margin-top:5px;font-size:11px;line-height:1.45}.dashboard-grid{grid-template-columns:1.5fr .65fr;gap:20px;display:grid}.panel{box-shadow:none;padding:28px}.panel-heading,.admin-heading{justify-content:space-between;align-items:flex-end;gap:20px;display:flex}.panel-heading h2,.admin-heading h1{margin:6px 0 0}.panel-heading>span{color:var(--muted);font-size:12px}.chapter-list{margin-top:24px}.chapter-row{width:100%;color:inherit;text-align:left;cursor:pointer;background:0 0;border:0;border-top:1px solid #ebebeb;border-radius:10px;grid-template-columns:minmax(230px,1.3fr) 1fr 62px;align-items:center;gap:16px;padding:14px 8px;display:grid}.chapter-row:hover,.chapter-row:focus-visible{background:#f5f5f5;outline:none}.chapter-row strong,.chapter-row span{display:block}.chapter-row strong{font-size:13px;line-height:1.4}.chapter-row span{color:var(--muted);margin-top:4px;font-size:11px}.chapter-row>b{color:var(--teal);text-align:right;font-size:12px}.bar{background:#e5e5e5;border-radius:10px;height:7px;overflow:hidden}.bar i{border-radius:inherit;background:linear-gradient(90deg,#111,#777);height:100%;display:block}.exam-panel{color:#fff;background:linear-gradient(145deg,#252525,#080808);padding:34px}.exam-panel .eyebrow{color:#d0d0d0}.exam-panel h2{margin:12px 0 8px;font-family:Segoe UI,Arial,sans-serif;font-size:32px}.exam-panel p{color:#c8c8c8;font-size:13px}.exam-score-strip{border-block:1px solid #ffffff26;grid-template-columns:1fr 1fr;margin:28px 0;padding:18px 0;display:grid}.exam-score-strip span+span{border-left:1px solid #ffffff26;padding-left:20px}.exam-score-strip b,.exam-score-strip small{display:block}.exam-score-strip b{font-size:23px}.exam-score-strip small{color:#bdbdbd}.exam-panel .dark-button{color:#111;background:#fff;border-color:#fff}.study-shell{width:min(960px,100% - 32px);margin:0 auto;padding:28px 0 70px}.study-header{min-height:48px;color:var(--muted);justify-content:space-between;align-items:center;font-size:12px;display:flex}.study-session-meta{justify-items:end;gap:3px;display:grid}.study-session-meta strong{max-width:620px;color:var(--ink);text-overflow:ellipsis;white-space:nowrap;line-height:1.35;overflow:hidden}.back-button{color:var(--ink);background:0 0;border:0;padding-inline:0}.question-card{padding:clamp(24px,5vw,52px)}.question-topline{color:var(--muted);justify-content:space-between;align-items:flex-start;gap:18px;font-size:11px;display:flex}.question-badges{flex-wrap:wrap;justify-content:flex-end;gap:8px;display:flex}.question-badges>span,.critical-badge{color:#555;background:#eee;border-radius:99px;padding:5px 9px;font-size:9px;font-weight:800}.critical-badge{color:#222;background:#fff;border:1px solid #a9a9a9}.question-progress{background:#e5e5e5;border-radius:9px;height:5px;margin:20px 0 34px;overflow:hidden}.question-progress i{background:var(--teal);height:100%;display:block}.question-card h1{letter-spacing:-.018em;margin:0 0 28px;font-family:Segoe UI,Arial,sans-serif;font-size:clamp(26px,3vw,34px);font-weight:750;line-height:1.3}.question-image{border:1px solid var(--line);background:#fafafa;border-radius:17px;place-items:center;max-width:620px;margin:0 auto 28px;padding:18px;display:grid}.question-image img{object-fit:contain;max-width:100%;max-height:360px}.option-list{gap:11px;display:grid}.option-button{border:1px solid var(--line);text-align:left;cursor:pointer;background:#fff;border-radius:15px;grid-template-columns:38px 1fr auto;align-items:center;gap:13px;width:100%;min-height:66px;padding:12px 16px;display:grid}.option-button:hover:not(:disabled){background:#f7f7f7;border-color:#8a8a8a}.option-button>span{width:36px;height:36px;color:var(--teal-dark);background:#eee;border-radius:10px;place-items:center;font-weight:900;display:grid}.option-button>strong{font-size:15px;line-height:1.5}.option-button>em{color:var(--teal);text-transform:uppercase;font-size:10px;font-style:normal;font-weight:900}.option-button.selected{border-color:var(--teal);box-shadow:0 0 0 2px #0000001a}.option-button.selected>span,.option-button.correct>span{background:var(--teal);color:#fff}.option-button.correct{background:#f0f0f0;border:2px solid #111}.option-button.wrong{background:#fafafa;border:2px dashed #777}.option-button.wrong>span{color:#fff;background:#707070}.unsure-button{color:var(--muted);background:0 0;border:1px dashed #aaa;margin-top:14px;font-size:11px}.unsure-button.active{color:#222;background:#f1f1f1;border-style:solid;border-color:#555}.feedback-box{border-radius:16px;margin-top:20px;padding:20px}.feedback-box.success{background:#f0f0f0;border:1px solid #202020}.feedback-box.error{background:#fafafa;border:1px dashed #707070}.feedback-box div{align-items:center;gap:8px;display:flex}.feedback-box span,.feedback-box small{color:var(--muted);font-size:11px}.feedback-box p{margin:11px 0;font-weight:700}.question-actions{border-top:1px solid #ebebeb;justify-content:flex-end;align-items:center;gap:18px;margin-top:26px;padding-top:22px;display:flex}.question-actions>span{color:var(--muted);font-size:10px}.study-tip{color:var(--muted);align-items:center;gap:8px;margin-top:13px;padding:14px 18px;font-size:11px;display:flex}.study-tip b{color:var(--ink)}.timer{background:var(--ink);color:#fff;text-align:center;border-radius:10px;min-width:90px;padding:9px 14px;font-size:18px;font-weight:900}.provisional-note{color:#444;text-align:center;background:#f3f3f3;border:1px solid #bdbdbd;border-radius:10px;margin-bottom:12px;padding:10px 14px;font-size:11px}.center-page{place-items:center;min-height:calc(100vh - 150px);padding:40px 20px;display:grid}.completion-card{text-align:center;width:min(560px,100%);padding:54px}.completion-icon{background:var(--teal-soft);width:78px;height:78px;color:var(--teal);border-radius:50%;place-items:center;margin:auto;font-size:36px;font-weight:900;display:grid}.completion-card h1{font-family:Segoe UI,Arial,sans-serif;font-size:34px}.completion-card p{color:var(--muted)}.big-score{color:var(--teal);margin:18px 0 4px;font-family:Segoe UI,Arial,sans-serif;font-size:72px;line-height:1;display:block}.app-loading{min-height:100vh;color:var(--muted);place-content:center;justify-items:center;gap:12px;display:grid}.dialog-backdrop{z-index:50;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#0000009e;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.auth-dialog{background:#fff;border-radius:24px;width:min(440px,100%);padding:36px;position:relative;box-shadow:0 30px 90px #00000040}.auth-dialog h2{margin:7px 0;font-family:Segoe UI,Arial,sans-serif;font-size:30px}.auth-dialog p{color:var(--muted);margin-bottom:24px;font-size:12px}.auth-dialog label{gap:7px;margin-top:14px;font-size:11px;font-weight:800;display:grid}.auth-dialog input{border:1px solid var(--line);border-radius:10px;min-height:45px;padding:0 13px}.auth-dialog .primary-button{width:100%;margin-top:20px}.dialog-close{cursor:pointer;background:0 0;border:0;font-size:25px;position:absolute;top:12px;right:15px}.form-error{color:#222;background:#f2f2f2;border:1px solid #888;border-radius:8px;margin-top:12px;padding:10px;font-size:11px}.admin-heading{margin-bottom:24px}.admin-heading h1{font-family:Segoe UI,Arial,sans-serif;font-size:42px}.table-wrap{overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:12px}th,td{text-align:left;border-bottom:1px solid #ebebeb;padding:15px 12px}th{color:var(--muted);text-transform:uppercase;letter-spacing:.08em;font-size:10px}footer{border-top:1px solid var(--line);width:min(1240px,100% - 40px);color:var(--muted);justify-content:space-between;gap:20px;margin:auto;padding:24px 0 34px;font-size:10px;display:flex}@media (width<=900px){.topbar{grid-template-columns:1fr auto}.topbar nav{display:none}.hero-grid,.dashboard-grid{grid-template-columns:1fr}.readiness-card{text-align:left;flex-direction:row;gap:32px}.status-label{margin-top:0}.quick-grid{grid-template-columns:1fr}}@media (width<=620px){.topbar{gap:10px;min-height:64px;padding:9px 10px}.brand{gap:9px;min-width:0}.brand-mark{border-radius:13px;width:40px;height:40px;font-size:15px}.brand strong{text-overflow:ellipsis;white-space:nowrap;font-size:13px;overflow:hidden}.brand small,.account-copy,.sync-dot{display:none}.account-area{min-width:0}.outline-button{text-overflow:ellipsis;white-space:nowrap;max-width:140px;padding:8px 10px;font-size:11px;overflow:hidden}.page-shell{width:calc(100% - 20px);padding:14px 0 48px}.hero-grid{gap:12px}.hero-card{border-radius:22px;min-height:0;padding:26px 20px 20px}.hero-card:after{opacity:.65;bottom:-110px;right:-90px}.eyebrow{letter-spacing:.11em;font-size:10px}.hero-card h1{letter-spacing:-.025em;margin:12px 0;font-size:32px;line-height:1.16}.hero-card>p{font-size:14px;line-height:1.58}.hero-actions{flex-direction:column;align-items:stretch;gap:9px;margin-top:20px}.hero-actions .primary-button{width:100%;min-height:50px}.hero-actions .text-button{border:1px solid var(--line);text-align:center;background:#ffffffbd;border-radius:12px;min-height:44px;padding:9px 12px}.hero-meta{grid-template-columns:1fr;gap:6px;margin-top:16px;font-size:11px;display:grid;position:relative;bottom:auto;left:auto;right:auto}.hero-meta span{padding:7px 10px}.readiness-card{text-align:center;border-radius:22px;flex-direction:column;gap:14px;padding:22px}.progress-ring{width:132px;height:132px}.progress-ring:before{width:102px;height:102px}.progress-ring strong{font-size:31px}.status-label{margin-top:0}.quick-grid{gap:9px;margin:12px 0}.quick-card{border-radius:16px;grid-template-columns:46px 1fr auto;gap:12px;min-height:92px;padding:15px}.quick-icon{border-radius:13px;width:44px;height:44px}.quick-card strong{font-size:14px}.quick-card small{font-size:11px}.dashboard-grid{gap:12px}.panel{border-radius:20px;padding:20px 15px}.panel-heading{align-items:flex-start}.panel-heading h2{font-size:21px}.panel-heading>span{white-space:nowrap;padding-top:3px}.chapter-row{grid-template-columns:1fr 62px}.chapter-row strong{font-size:13px}.chapter-row span{font-size:11px}.chapter-row .bar{grid-area:2/1/auto/-1}.study-shell{width:calc(100% - 20px);padding:14px 0 48px}.study-header{align-items:flex-start;gap:14px;min-height:58px}.back-button{flex:none;padding-top:8px;font-size:12px}.study-session-meta{max-width:65%;padding-top:5px}.study-session-meta strong{text-align:right;text-overflow:clip;white-space:normal;max-width:100%;font-size:11px;overflow:visible}.question-card{border-radius:20px;padding:22px 17px}.question-topline{flex-direction:column}.question-badges{justify-content:flex-start}.question-progress{margin:17px 0 24px}.question-card h1{letter-spacing:-.012em;overflow-wrap:anywhere;margin-bottom:22px;font-size:24px;line-height:1.35}.question-image{margin-bottom:20px;padding:10px}.option-list{gap:9px}.option-button{border-radius:14px;grid-template-columns:36px 1fr;gap:11px;min-height:64px;padding:11px 12px}.option-button>span{width:34px;height:34px}.option-button>strong{font-size:15px;line-height:1.45}.option-button>em{display:none}.feedback-box{padding:16px}.feedback-box div{flex-direction:column;align-items:flex-start;gap:2px}.question-actions{flex-direction:column;align-items:stretch}.question-actions>span{text-align:center}.question-actions .primary-button{width:100%;min-height:50px}.study-tip{flex-direction:column;align-items:flex-start}.completion-card{padding:38px 24px}footer{flex-direction:column;width:calc(100% - 24px)}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important}}