:root{font-family:'DM Sans',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;color:#18233b;background:#f7f8fc;font-synthesis:none;text-rendering:optimizeLegibility;--ink:#18233b;--muted:#788196;--line:#e7e9f0;--navy:#202d4e;--violet:#6458cc;--purple:#eeeafd;--mint:#e5f3ee;--paper:#fff;--bg:#f7f8fc;--soft:#f1f2f8;--shadow:0 16px 45px #2633580d}*{box-sizing:border-box}body{margin:0;min-width:320px}button,input,select{font:inherit}button,a,select,input{outline-offset:3px}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #8178db}a{color:inherit;text-decoration:none}.skip-link{position:fixed;z-index:20;top:-80px;left:12px;background:#fff;padding:12px 16px;border-radius:8px}.skip-link:focus{top:12px}.app-shell{min-height:100vh}.sidebar{background:#fff;border-right:1px solid var(--line);position:fixed;inset:0 auto 0 0;width:252px;padding:31px 20px 18px;display:flex;flex-direction:column;z-index:5}.brand{display:flex;align-items:center;gap:10px;font:800 21px Manrope,sans-serif;letter-spacing:-1px;color:#26334f}.brand-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:13px;background:#e9e6fb;color:#5d51c4;font-size:23px}.brand-mark span{font-size:13px;margin-left:-5px;margin-top:12px}.brand-x{color:#786ede}.brand small{display:block;font:700 8px 'DM Sans',sans-serif;letter-spacing:1.05px;color:#9a9fb0;margin-top:2px}.profile-mini{display:flex;align-items:center;gap:10px;margin:40px 2px 26px;padding:12px;background:#f8f8fb;border-radius:14px;min-width:0}.avatar{display:grid;place-items:center;flex:0 0 34px;height:34px;border-radius:50%;background:#e8e5fb;color:#5e55bd;font-weight:700}.profile-mini b,.profile-mini small{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:155px}.profile-mini b{font-size:12px}.profile-mini small{font-size:10px;color:var(--muted);margin-top:3px}.nav-list{display:grid;gap:5px}.nav-list a{display:flex;align-items:center;gap:13px;padding:12px 14px;color:#717b90;font-weight:600;font-size:13px;border-radius:10px}.nav-list a span{width:18px;text-align:center;font-size:17px}.nav-list a:hover{background:#f7f7fb;color:var(--ink)}.nav-list a.active{background:#efedfb;color:#5f55bd}.sidebar-bottom{margin-top:auto}.privacy-badge{display:flex;gap:10px;padding:13px 10px;border-top:1px solid var(--line);color:#38a080}.privacy-badge b,.privacy-badge small{display:block}.privacy-badge b{font-size:10px;color:#3c4a62}.privacy-badge small{font-size:9px;color:#9298a8;margin-top:3px}.official-link{display:block;font-size:10px;color:#7a8396;padding:14px 10px}.main-area{margin-left:252px;min-height:100vh;padding:47px clamp(28px,5vw,74px) 18px;max-width:1700px}.page-heading{display:flex;justify-content:space-between;align-items:end;gap:22px;margin:0 auto 28px;max-width:1100px}.kicker,.modal-kicker{font-size:10px;font-weight:700;letter-spacing:1.6px;color:#9297a8}.page-heading h1{font:700 clamp(30px,3.5vw,43px)/1.12 Manrope,sans-serif;letter-spacing:-1.8px;margin:9px 0 9px;color:#202d49}.page-heading h1 em,.result-card h2 em{font-family:Georgia,serif;font-weight:400;color:#796fd1}.page-heading p{margin:0;color:var(--muted);font-size:14px;line-height:1.65;max-width:580px}.button{border:0;display:inline-flex;align-items:center;justify-content:center;gap:12px;border-radius:10px;padding:13px 17px;font-size:12px;font-weight:700;cursor:pointer;transition:transform .15s,box-shadow .15s}.button:hover{transform:translateY(-1px);box-shadow:0 8px 20px #2834511c}.button.primary{background:#272f50;color:#fff}.button.primary:hover{background:#343e65}.button.soft{background:#eeedf8;color:#5b53ad}.button.danger{background:#f8e9ea;color:#a34f5d}.button.full{width:100%;margin-top:13px}.hero-card{max-width:1100px;margin:0 auto 34px;border-radius:18px;min-height:248px;background:#eae8f8;position:relative;overflow:hidden;display:flex;align-items:center;padding:32px 42px}.hero-copy{position:relative;z-index:2;max-width:430px}.tag{display:inline-block;background:#dcd8f5;color:#6159b5;border-radius:30px;padding:7px 10px;font-size:9px;font-weight:700;letter-spacing:.75px}.hero-copy h2{font:700 25px/1.25 Manrope,sans-serif;letter-spacing:-.8px;margin:15px 0 7px;color:#26304e}.hero-copy p{font-size:12px;line-height:1.65;color:#767a98;max-width:360px;margin:0 0 15px}.text-link{color:#5f57b4;font-weight:700;font-size:11px}.text-link span{padding-left:4px}.hero-art{position:absolute;inset:0 0 0 55%;overflow:hidden}.sun{position:absolute;right:15%;top:15%;width:158px;height:158px;background:#cec9ef;border-radius:50%;opacity:.8}.orbit{position:absolute;right:4%;top:-105px;width:380px;height:330px;border:1px solid #d3cff0;border-radius:50%;transform:rotate(-30deg)}.orbit-two{right:-7%;top:-83px;width:440px;height:380px;transform:rotate(30deg)}.math-note{position:absolute;display:grid;place-items:center;background:#fff;color:#655dc0;box-shadow:0 9px 25px #554e961c;border-radius:12px;font:700 17px Georgia,serif;transform:rotate(-7deg)}.note-one{right:32%;top:25%;width:112px;height:63px}.note-two{right:17%;top:59%;width:52px;height:52px;font-size:26px;transform:rotate(9deg)}.note-three{right:57%;top:65%;width:44px;height:44px;font-size:20px;transform:rotate(12deg)}.section-heading,.card-title{display:flex;justify-content:space-between;align-items:end;gap:14px}.section-heading{max-width:1100px;margin:0 auto 14px}.section-heading h2{font:700 18px Manrope,sans-serif;margin:5px 0 0;letter-spacing:-.4px}.stats-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;max-width:1100px;margin:0 auto 23px}.stat-card,.content-card{background:#fff;border:1px solid #eceef3;border-radius:14px;box-shadow:var(--shadow)}.stat-card{padding:17px 18px}.stat-top{display:flex;justify-content:space-between;align-items:center;color:#858da0;font-size:11px}.stat-top i{font-style:normal;display:grid;place-items:center;width:27px;height:27px;border-radius:9px;background:#f0effa;color:#7066c8}.stat-card>strong{font:700 27px Manrope,sans-serif;display:block;margin:9px 0 3px;letter-spacing:-1px}.stat-card>strong small{font-size:14px}.stat-card>small{font-size:10px;color:#a0a6b4}.two-column{display:grid;grid-template-columns:1.35fr 1fr;gap:15px;max-width:1100px;margin:0 auto}.content-card{padding:22px;margin-bottom:15px}.content-card h2,.content-card h3{font-family:Manrope,sans-serif;color:#26304b}.content-card h2{font-size:19px;letter-spacing:-.5px;margin:9px 0 8px}.content-card h3{font-size:15px;margin:5px 0 0;letter-spacing:-.3px}.subtle{font-size:10px;color:#9ba1b0}.mastery-row{margin-top:18px}.mastery-label{display:flex;justify-content:space-between;gap:14px;font-size:11px;color:#545f76;margin-bottom:8px}.mastery-label span:last-child{color:#9299a9}.track{height:6px;background:#f0f1f5;border-radius:10px;overflow:hidden}.track>span{height:100%;display:block;background:#a49be6;border-radius:10px;transition:width .25s}.plan-card{background:#f4f3fc}.plan-card>p{font-size:11px;color:#7b8195;line-height:1.6}.week-dots{display:flex;justify-content:space-between;margin:20px 3px 13px}.week-dots span{display:grid;place-items:center;width:26px;height:26px;border-radius:50%;background:#e8e6f5;color:#8f8bac;font-size:9px}.week-dots .done{background:#7067c6;color:white}.plan-note{font-size:10px;color:#82869d;margin-bottom:12px}.notice{padding:13px 14px;background:#f7f7fa;border-radius:10px;font-size:10px;line-height:1.6;color:#777f91;margin-top:15px}.notice.unofficial{max-width:1100px;margin:18px auto 34px;display:flex;gap:10px;background:#f1f0fa;color:#79758f}.notice.unofficial>span{font-size:16px;color:#766cc9}.notice b{color:#4e5370}.practice-layout,.exam-grid,.profile-layout{display:grid;grid-template-columns:1.05fr .95fr;gap:15px;max-width:1100px;margin:auto}.practice-controls label,.profile-layout label,.exam-grid label{display:block;font-size:11px;font-weight:700;color:#505c73;margin:19px 0 7px}.practice-controls select,.exam-grid select,.profile-layout input:not([type=range]),.profile-layout select,.modal input,.modal select{width:100%;height:42px;padding:0 12px;border:1px solid #e2e5ee;border-radius:9px;background:white;color:#3d4961;font-size:12px}.topic-chips{display:flex;gap:7px;flex-wrap:wrap}.chip{border:1px solid #e3e4ed;background:#fff;color:#737b8e;padding:7px 10px;border-radius:30px;font-size:10px;cursor:pointer}.chip.selected{background:#efedfb;border-color:#dedaf6;color:#5d54b7}.choice-row{display:flex;gap:9px}.duration{flex:1;border:1px solid #e5e6ed;background:#fff;border-radius:9px;padding:10px;cursor:pointer;color:#3c4861}.duration.selected{border-color:#aaa3e3;background:#f4f2fc}.duration b,.duration small{display:block}.duration b{font-size:16px}.duration small{color:#9096a5;font-size:9px;margin-top:3px}.privacy-inline{font-size:9px;color:#9aa0ae;text-align:center;margin:13px 0 0}.session-aside{background:#f6f6fa}.session-aside>p{font-size:11px;color:#848b9d}.how-step{display:flex;gap:12px;margin:21px 0}.how-step>span,.exam-tip>span{font-size:10px;font-weight:700;color:#8f86d7;padding-top:2px}.how-step b{font-size:11px;color:#4a5670}.how-step p{font-size:10px;color:#8c93a3;margin:4px 0 0;line-height:1.55}.question-card,.explanation-card,.result-card{max-width:760px;margin:20px auto}.question-top{display:flex;justify-content:space-between;align-items:center;font-size:11px;color:#80889a;margin-bottom:15px}.question-card .track{margin-bottom:25px}.question-card .kicker{margin-bottom:8px}.question-card h2{font-size:23px;line-height:1.45;margin:8px 0}.answer-hint{font-size:11px;color:#8991a1}.question-card label{display:block;font-size:11px;font-weight:700;margin:17px 0 7px}.question-card input{height:45px;width:100%;border:1px solid #dfe3ec;border-radius:9px;padding:0 12px;font-size:14px}.question-actions{display:flex;justify-content:flex-end;gap:9px;margin-top:20px}.feedback{font-size:11px;margin-top:7px;min-height:16px}.feedback.wrong{color:#a95757}.answer-result{display:flex;align-items:center;gap:11px;margin-bottom:27px;padding:13px;border-radius:10px}.answer-result>span{font-size:18px}.answer-result b,.answer-result small{display:block}.answer-result b{font-size:12px}.answer-result small{font-size:10px;margin-top:4px}.answer-result.right{background:#eaf5ee;color:#49855d}.answer-result.miss{background:#f6f2eb;color:#8e714d}.explanation-card h2{font:600 18px/1.5 Manrope,sans-serif}.explanation-card>p{font-size:12px;color:#7d8595}.result-card{text-align:center;padding:40px 25px}.result-confetti{font-size:30px;color:#8c82df}.result-card h2{font-size:30px;line-height:1.2}.result-number{font:800 46px Manrope;color:#5750a5;letter-spacing:-2px;margin:20px}.result-number small{font-size:14px;font-weight:500;color:#8990a1;letter-spacing:0}.result-card>p{font-size:12px;color:#81899b}.result-card .question-actions{justify-content:center}.exam-grid{grid-template-columns:1.15fr .85fr}.exam-icon{float:right;font-size:35px;color:#aaa2e2}.exam-grid .content-card>p{font-size:11px;color:#828a9b;line-height:1.7}.exam-options{display:flex;gap:10px;margin-top:14px}.exam-choice{flex:1;text-align:left;border:1px solid #e4e6ed;border-radius:10px;padding:12px;background:#fff;cursor:pointer}.exam-choice.selected{background:#f2f0fb;border-color:#b6b0e7}.exam-choice b,.exam-choice small{display:block}.exam-choice b{font-size:11px;color:#4e5870}.exam-choice small{font-size:9px;color:#8d94a4;margin-top:5px}.exam-aside{background:#f4f3fb}.exam-tip{display:flex;gap:10px;margin:18px 0}.exam-tip p{margin:0;font-size:10px;color:#788095;line-height:1.6}.exam-timer{max-width:760px;margin:20px auto 0;background:#272f50;color:#fff;border-radius:9px;padding:10px 14px;font-size:11px;font-weight:700;text-align:center}.chart-card,.history-card{max-width:1100px;margin:20px auto}.bar-chart{display:flex;align-items:end;justify-content:space-around;gap:10px;height:200px;margin:22px 4px 0;border-bottom:1px solid #eceef3}.bar-column{height:100%;flex:1;display:flex;flex-direction:column;align-items:center;justify-content:end;gap:6px}.bar-value{font-size:9px;color:#8d92a2}.bar-base{height:140px;width:min(40px,70%);display:flex;align-items:end;background:#f5f4fb;border-radius:7px 7px 0 0;overflow:hidden}.bar-base i{display:block;width:100%;background:#a49be6;border-radius:7px 7px 0 0}.bar-column small{font-size:9px;color:#969cac;margin-bottom:-19px}.empty-state{text-align:center;padding:42px 10px;color:#81899b}.empty-state>div{font-size:24px;color:#8e86d2}.empty-state h3{font-size:13px}.empty-state p,.empty-copy{font-size:11px}.history-row{display:flex;align-items:center;gap:12px;border-bottom:1px solid #f0f1f4;padding:13px 0}.history-icon{width:31px;height:31px;display:grid;place-items:center;border-radius:9px;background:#f0effa;color:#746ac6}.history-row>div{flex:1}.history-row b,.history-row small{display:block}.history-row b{font-size:11px}.history-row small{font-size:9px;color:#9299a9;margin-top:4px}.history-row>strong{font-size:13px;color:#6158b7}.privacy-card{background:#f7f6fc}.privacy-card ul{padding-left:17px;color:#717a8f;font-size:11px;line-height:1.8}.curriculum-card{max-width:1100px;margin:15px auto}.curriculum-card p{color:#7b8497;font-size:11px;line-height:1.8}.curriculum-card a{color:#645cc0;text-decoration:underline}.profile-layout{align-items:start}.profile-layout input[type=range]{width:100%;accent-color:#7168c4}.profile-layout label span{float:right;color:#8279ce;font-weight:500}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.mobile-header{display:none}footer{display:flex;justify-content:space-between;gap:12px;max-width:1100px;margin:40px auto 0;padding:13px 0;border-top:1px solid #e9ebf1;color:#a1a6b2;font-size:9px}.toast{position:fixed;right:24px;bottom:22px;background:#273252;color:#fff;border-radius:9px;padding:12px 16px;font-size:11px;opacity:0;transform:translateY(8px);transition:.2s;pointer-events:none;z-index:12}.toast.show{opacity:1;transform:translateY(0)}dialog{border:0;border-radius:18px;padding:0;width:min(520px,calc(100% - 30px));box-shadow:0 30px 100px #1d244355;color:var(--ink)}dialog::backdrop{background:#1d24437a;backdrop-filter:blur(4px)}dialog form{padding:35px 39px}dialog h1{font:700 30px/1.16 Manrope,sans-serif;letter-spacing:-1px;margin:12px 0}dialog h1 em{font-family:Georgia,serif;color:#786fd0;font-weight:400}dialog p{color:#828a9b;font-size:12px;line-height:1.6;margin-bottom:22px}dialog label{display:block;margin:15px 0 6px;font-size:11px;font-weight:700}.optional{font-weight:400;color:#a2a7b3}.micro-note{text-align:center;color:#9ca2b0;font-size:9px;margin-top:12px}.hidden{display:none!important}@media(max-width:1050px){.sidebar{width:220px}.main-area{margin-left:220px;padding-left:30px;padding-right:30px}.hero-card{padding-left:28px}.hero-art{left:53%}}@media(max-width:760px){.sidebar{transform:translateX(-100%);transition:transform .2s;width:260px;box-shadow:10px 0 30px #1d244322}.nav-open .sidebar{transform:translateX(0)}.main-area{margin-left:0;padding:12px 18px 16px}.mobile-header{height:45px;display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.mobile-header .brand{font-size:18px}.mobile-header .brand-mark{width:31px;height:31px;font-size:19px}.icon-button{border:0;background:#eeedf8;color:#5b53ad;border-radius:9px;width:36px;height:34px;font-size:17px}.page-heading{align-items:start;flex-direction:column}.page-heading>.button{align-self:stretch}.hero-card{min-height:245px;padding:24px}.hero-art{left:54%;opacity:.65}.hero-copy{max-width:68%}.hero-copy h2{font-size:21px}.two-column,.practice-layout,.exam-grid,.profile-layout{grid-template-columns:1fr;gap:2px}.stats-grid{gap:8px}.stat-card{padding:12px}.stat-card>strong{font-size:22px}.stat-top{font-size:9px}.stat-top i{width:23px;height:23px}.stat-card>small{font-size:9px}.content-card{padding:18px}.session-aside{margin-top:0}.question-card h2{font-size:20px}footer{flex-direction:column;margin-top:26px}dialog form{padding:28px 23px}}@media(max-width:430px){.main-area{padding-left:13px;padding-right:13px}.stats-grid{grid-template-columns:1fr 1fr}.stat-card:last-child{grid-column:span 2}.hero-art{left:48%;opacity:.35}.hero-copy{max-width:100%}.hero-copy p{max-width:280px}.section-heading .text-link{font-size:9px}.page-heading h1{font-size:32px}.form-row{gap:8px}.exam-options{flex-direction:column}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}