:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;color:#102b36;font-synthesis:none;text-rendering:optimizelegibility;--navy:#071923;--ink:#102b36;--muted:#64747b;--paper:#f7f8f3;--white:#fff;--line:#d8e0dc;--signal:#e9ff70;--teal:#19b7a5;--teal-dark:#0a6c62;--amber:#f0b34a;--red:#d94757;--blue-wash:#d9edf0;--radius-lg:28px;--radius-md:18px;--shadow:0 24px 60px #0719231f;background:#f2f5ef;font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}html{background:var(--navy);scroll-behavior:smooth;min-width:320px;min-height:100%}body{background:var(--paper);min-width:320px;min-height:100vh;margin:0}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent;color:inherit}button:focus-visible,a:focus-visible,input:focus-visible{outline-offset:3px;outline:3px solid #4cb9ff}button:disabled{cursor:not-allowed;opacity:.48}h1,h2,h3,p{margin-top:0}.sr-only{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.skip-link{z-index:1000;background:var(--signal);border-radius:10px;padding:12px 18px;font-weight:800;text-decoration:none;position:fixed;top:-80px;left:16px}.skip-link:focus{top:12px}.app-shell{min-height:100vh;padding-bottom:calc(120px + env(safe-area-inset-bottom));background:var(--paper)}.app-header{background:var(--navy);color:#fff;z-index:50;border-bottom:1px solid #ffffff1a;justify-content:space-between;align-items:center;height:82px;padding:0 clamp(18px,4vw,64px);display:flex;position:sticky;top:0}.brand{color:#fff;cursor:pointer;text-align:left;background:0 0;border:0;align-items:center;gap:12px;padding:0;display:flex}.brand-mark{border:2px solid var(--signal);border-radius:13px 13px 18px 18px;place-items:center;width:38px;height:42px;display:grid;transform:perspective(40px)rotateX(-4deg)}.brand-mark i{background:linear-gradient(#fff 0 25%,#0000 25% 40%,#fff 40% 67%,#0000 67% 80%,#fff 80%);width:5px;height:25px}.brand strong{letter-spacing:-.6px;font-size:19px;display:block}.brand strong span{color:var(--signal)}.brand small{letter-spacing:1.7px;color:#93a8af;margin-top:2px;font-size:9px;font-weight:700;display:block}.header-actions{align-items:center;gap:10px;display:flex}.network-state{color:#91a4ab;letter-spacing:.9px;align-items:center;gap:7px;font-size:10px;font-weight:800;display:flex}.network-state i{background:var(--teal);border-radius:50%;width:7px;height:7px;box-shadow:0 0 0 4px #19b7a51f}.network-state.offline i{background:var(--amber)}.language-button,.install-button{color:#d7e0e2;cursor:pointer;background:#ffffff0a;border:1px solid #fff3;border-radius:11px;height:38px;padding:0 12px;font-size:12px;font-weight:700}.language-button span{color:#71858d;margin-left:5px;font-size:9px}.language-button.active{border-color:#e9ff7080}.language-button.active span{color:var(--signal)}.install-button{background:var(--signal);color:var(--navy);border-color:var(--signal)}.icon-button{color:#fff;cursor:pointer;background:0 0;border:1px solid #fff3;border-radius:12px;place-items:center;width:42px;height:42px;font-size:19px;display:grid}main{min-height:calc(100vh - 82px);scroll-padding-bottom:calc(120px + env(safe-area-inset-bottom))}.page{width:min(1180px,100% - 36px);margin:0 auto;padding:54px 0 60px}.eyebrow{color:var(--teal-dark);letter-spacing:1.8px;font-size:10px;font-weight:900;display:inline-block}.page-heading{justify-content:space-between;align-items:end;gap:40px;margin-bottom:36px;display:flex}.page-heading h1{color:var(--ink);letter-spacing:-4px;margin:8px 0 0;font-size:clamp(42px,6vw,78px);line-height:.98}.page-heading>p{max-width:475px;color:var(--muted);margin-bottom:4px;font-size:16px;line-height:1.7}.section-heading{justify-content:space-between;align-items:end;gap:30px;margin:62px 0 22px;display:flex}.section-heading.compact{margin-top:46px}.section-heading h2{letter-spacing:-1.6px;margin:7px 0 0;font-size:clamp(27px,4vw,40px)}.section-heading p{max-width:470px;color:var(--muted);margin:0;line-height:1.6}.text-button{color:var(--teal-dark);cursor:pointer;background:0 0;border:0;padding:10px 0;font-weight:800}.button{cursor:pointer;border:1px solid #0000;border-radius:14px;justify-content:center;align-items:center;gap:8px;min-height:48px;padding:0 20px;font-weight:850;text-decoration:none;transition:transform .18s,box-shadow .18s,background .18s;display:inline-flex}.button:hover:not(:disabled){transform:translateY(-2px)}.button.primary{background:var(--navy);color:#fff;box-shadow:0 10px 20px #07192329}.button.secondary{color:var(--ink);border-color:var(--line);background:#fff}.button.signal{background:var(--signal);color:var(--navy);box-shadow:0 12px 24px #8eaa1f33}.button.wide{width:100%}.hero-grid{grid-template-columns:minmax(0,1.55fr) minmax(300px,.75fr);gap:22px;display:grid}.mission-card{border-radius:var(--radius-lg);background:var(--navy);color:#fff;min-height:520px;box-shadow:var(--shadow);padding:clamp(28px,5vw,58px);position:relative;overflow:hidden}.mission-card:after{content:"";border:1px solid #e9ff7033;border-radius:50%;width:360px;height:360px;position:absolute;top:-110px;right:-120px;box-shadow:0 0 0 45px #e9ff7009,0 0 0 90px #e9ff7006}.mission-topline{z-index:1;justify-content:space-between;display:flex;position:relative}.mission-topline .eyebrow{color:var(--signal)}.duration{color:#8ba0a7;letter-spacing:1.5px;font-size:11px;font-weight:900}.mission-copy{z-index:1;max-width:690px;margin-top:66px;position:relative}.mission-copy h1{letter-spacing:-4px;margin-bottom:25px;font-size:clamp(42px,6vw,72px);line-height:.95}.mission-copy p{color:#b4c2c7;max-width:510px;font-size:16px;line-height:1.65}.mission-stats{z-index:1;border-top:1px solid #ffffff1f;gap:38px;margin-top:44px;padding:22px 0;display:flex;position:relative}.mission-stats div{grid-template-columns:auto 1fr;align-items:center;gap:7px;display:grid}.mission-stats strong{color:var(--signal);font-size:23px}.mission-stats span{color:#97aab0;text-transform:uppercase;letter-spacing:.8px;font-size:11px}.mission-card .button{z-index:1;justify-content:space-between;min-height:58px;padding:0 24px;font-size:16px;position:relative}.mission-card .button span{font-size:23px}.integrity-error{z-index:1;background:#d9475733;border:1px solid #ffffff38;border-radius:12px;padding:11px 13px;position:relative;color:#ffd9dd!important;font-size:12px!important}.exam-card{border-radius:var(--radius-lg);background:#dcedef;border:1px solid #c8dee0;flex-direction:column;min-height:520px;padding:28px;display:flex;position:relative;overflow:hidden}.exam-card-head{color:#426269;letter-spacing:1.2px;align-items:center;gap:7px;font-size:10px;font-weight:900;display:flex}.exam-card-head .official-dot{color:var(--teal)}.exam-card-head small{color:#758e94;letter-spacing:0;margin-left:auto;font-weight:700}.exam-number{align-items:baseline;margin-top:34px;display:flex}.exam-number strong{letter-spacing:-7px;font-size:91px;line-height:.85}.exam-number span{color:#5c747b;font-size:30px;font-weight:800}.exam-card>p{color:#5b747a;margin:10px 0 20px;font-weight:700}.mini-road{background:var(--ink);justify-content:space-around;align-items:center;height:62px;margin:5px -28px 24px;display:flex;transform:rotate(-3deg)}.mini-road i{background:var(--signal);width:52px;height:4px}.exam-card ul{gap:12px;margin:0;padding:0;list-style:none;display:grid}.exam-card li{color:#385159;padding-left:21px;font-size:13px;line-height:1.45;position:relative}.exam-card li:before{content:"✓";color:var(--teal-dark);font-weight:900;position:absolute;left:0}.exam-card>a{color:var(--teal-dark);text-underline-offset:4px;margin-top:auto;font-size:13px;font-weight:850}.metric-grid{grid-template-columns:repeat(3,1fr);gap:16px;display:grid}.metric-card{border:1px solid var(--line);border-radius:var(--radius-md);background:#fff;flex-direction:column;min-height:190px;padding:24px;display:flex}.metric-card>span{color:var(--muted);letter-spacing:1.4px;font-size:9px;font-weight:900}.metric-card>strong{letter-spacing:-1.5px;margin:18px 0 7px;font-size:32px}.metric-card p{color:var(--muted);margin-bottom:0;font-size:13px;line-height:1.45}.metric-card.action-card{background:var(--ink);color:#fff;border-color:var(--ink)}.metric-card.action-card p{color:#9fb0b5}.metric-card.action-card button{color:var(--signal);cursor:pointer;background:0 0;border:0;align-self:start;margin-top:auto;padding:0;font-weight:850}.lesson-strip{grid-template-columns:repeat(3,1fr);gap:16px;display:grid}.lesson-strip button{border-radius:var(--radius-md);border:1px solid var(--line);text-align:left;cursor:pointer;background:#fff;flex-direction:column;min-height:255px;padding:20px;transition:transform .2s,box-shadow .2s;display:flex;overflow:hidden}.lesson-strip button:hover{transform:translateY(-4px);box-shadow:0 18px 35px #07192317}.lesson-index{color:var(--teal-dark);font-size:10px;font-weight:900}.lesson-art{background:#e2eff0;border-block:1px solid #d0e0e1;height:110px;margin:15px -20px 18px;position:relative}.lesson-art:before,.lesson-art:after{content:"";position:absolute}.lesson-art.blind:before{background:var(--signal);width:115px;height:46px;box-shadow:140px -12px 0 -12px var(--amber);border-radius:15px;top:36px;left:27%}.lesson-art.blind:after{clip-path:polygon(0 35%,100% 0,100% 100%,0 70%);background:#d9475766;width:170px;height:70px;top:20px;left:46%}.lesson-art.gap:before{background:var(--signal);width:78px;height:36px;box-shadow:225px 0 var(--amber);border-radius:12px;top:40px;left:15%}.lesson-art.gap:after{background:var(--teal);border-radius:6px;width:160px;height:8px;top:55px;left:34%}.lesson-art.circle:before{border:24px solid var(--ink);border-radius:50%;width:104px;height:104px;top:-8px;left:calc(50% - 76px)}.lesson-art.circle:after{background:var(--signal);border-radius:8px;width:54px;height:26px;top:63px;left:18%}.lesson-strip strong{font-size:17px}.lesson-strip small{color:var(--muted);margin-top:7px}.practice-modes{grid-template-columns:1fr 1fr;gap:20px;display:grid}.mode-card{border-radius:var(--radius-lg);border:1px solid var(--line);flex-direction:column;align-items:start;min-height:310px;padding:clamp(28px,4vw,44px);display:flex}.mode-card.quick{background:#fff}.mode-card.full{background:var(--navy);color:#fff;border-color:var(--navy);position:relative;overflow:hidden}.mode-card.full:after{content:"70";color:#ffffff09;font-size:190px;font-weight:900;line-height:1;position:absolute;bottom:-45px;right:-10px}.mode-tag{letter-spacing:1.5px;color:var(--teal-dark);font-size:9px;font-weight:900}.mode-card.full .mode-tag{color:var(--signal)}.mode-card h2{letter-spacing:-2.5px;margin:30px 0 12px;font-size:clamp(32px,4vw,49px)}.mode-card p{max-width:440px;color:var(--muted);line-height:1.65}.mode-card.full p{color:#aab9bd}.mode-card .button{z-index:1;margin-top:auto;position:relative}.topic-panel{margin-top:50px}.topic-grid{border-top:1px solid var(--line);border-left:1px solid var(--line);grid-template-columns:repeat(4,1fr);display:grid}.topic-grid button{border:0;border-right:1px solid var(--line);border-bottom:1px solid var(--line);text-align:left;cursor:pointer;background:#fff;flex-direction:column;align-items:start;min-height:140px;padding:19px;display:flex}.topic-grid button:hover,.topic-grid button.active{background:var(--blue-wash)}.topic-grid button.active{box-shadow:inset 0 0 0 2px var(--teal-dark)}.topic-grid button>span{color:var(--teal-dark);font-size:9px;font-weight:900}.topic-grid button strong{margin-top:auto;font-size:15px}.topic-grid button small{color:var(--muted);margin-top:5px}.source-note,.conflict-note{color:#5c6758;background:#edf0e4;border:1px solid #dce2cd;border-radius:14px;margin-top:26px;padding:17px 19px;font-size:13px;line-height:1.55}.review-summary{background:var(--navy);color:#fff;border-radius:var(--radius-lg);grid-template-columns:repeat(3,1fr);gap:20px;padding:28px;display:grid}.review-summary div{border-right:1px solid #ffffff21;flex-direction:column;justify-content:center;min-height:100px;padding-left:20px;display:flex}.review-summary div:last-child{border-right:0}.review-summary strong{color:var(--signal);font-size:39px}.review-summary span{color:#a9b9bd;text-transform:uppercase;letter-spacing:1.2px;font-size:11px}.weak-list{grid-template-columns:repeat(2,1fr);gap:12px;margin-top:28px;display:grid}.weak-list article{border:1px solid var(--line);background:#fff;border-radius:16px;padding:22px}.weak-list article>span{color:var(--teal-dark);letter-spacing:1.2px;font-size:9px;font-weight:900}.weak-list h2{margin:12px 0 18px;font-size:17px;line-height:1.35}.weak-list article div{color:var(--muted);justify-content:space-between;display:flex}.weak-list>.button{grid-column:1/-1;justify-self:start;margin-top:10px}.empty-state{text-align:center;flex-direction:column;justify-content:center;align-items:center;min-height:440px;display:flex}.empty-state .empty-icon{background:var(--blue-wash);width:72px;height:72px;color:var(--teal-dark);border-radius:50%;place-items:center;font-size:27px;font-weight:900;display:grid}.empty-state h1,.empty-state h2{letter-spacing:-1.4px;margin:22px 0 8px;font-size:32px}.empty-state p{color:var(--muted);max-width:480px;line-height:1.6}.empty-state .button{margin-top:15px}.guide-alert{background:var(--signal);color:var(--navy);border-radius:16px;grid-template-columns:1fr 1.2fr auto;align-items:center;gap:20px;padding:20px 22px;display:grid}.guide-alert strong{font-size:18px}.guide-alert span{font-size:13px;font-weight:700}.guide-alert a{font-size:12px;font-weight:900}.journey-layout{grid-template-columns:1.35fr .65fr;align-items:start;gap:22px;margin-top:50px;display:grid}.journey-list>.eyebrow{margin-bottom:18px}.journey-list article{border-top:1px solid var(--line);grid-template-columns:56px 1fr;gap:16px;padding:20px 0;display:grid}.journey-list article>span{background:var(--navy);width:42px;height:42px;color:var(--signal);border-radius:50%;place-items:center;font-size:12px;font-weight:900;display:grid}.journey-list h2{margin-bottom:5px;font-size:19px}.journey-list p{color:var(--muted);margin:0;line-height:1.55}.boundary-card{background:var(--blue-wash);border-radius:var(--radius-lg);padding:28px;position:sticky;top:110px}.boundary-card h2{letter-spacing:-1.4px;margin:18px 0;font-size:31px}.boundary-card ul{gap:16px;margin:0;padding:0;list-style:none;display:grid}.boundary-card li{color:#496168;padding-left:22px;line-height:1.5;position:relative}.boundary-card li:before{content:"—";color:var(--teal-dark);font-weight:900;position:absolute;left:0}.counter-layout{grid-template-columns:1fr 1fr;gap:22px;display:grid}.counter-list{gap:8px;display:grid}.counter-list button{border:1px solid var(--line);text-align:left;cursor:pointer;background:#fff;border-radius:15px;grid-template-columns:38px 1fr 22px;align-items:center;gap:10px;min-height:94px;padding:16px;display:grid}.counter-list button.active{background:var(--navy);color:#fff;border-color:var(--navy)}.counter-list button>span{color:var(--teal-dark);font-size:10px;font-weight:900}.counter-list button.active>span{color:var(--signal)}.counter-list strong,.counter-list small{display:block}.counter-list small{color:var(--muted);margin-top:4px;line-height:1.35}.counter-list button.active small{color:#9eafb4}.counter-list i{font-style:normal}.counter-detail{border-radius:var(--radius-lg);border:1px solid var(--line);background:#fff;flex-direction:column;padding:30px;display:flex}.counter-detail h2{letter-spacing:-1.4px;margin:28px 0 8px;font-size:34px}.counter-detail>p{color:var(--muted);line-height:1.5}.counter-detail>div{border-top:1px solid var(--line);grid-template-columns:110px 1fr;gap:15px;padding:18px 0;display:grid}.counter-detail>div span{color:var(--muted);letter-spacing:1px;font-size:9px;font-weight:900}.counter-detail>div a,.counter-detail>div strong{font-size:14px;line-height:1.5}.counter-detail .button{align-self:start;margin-top:auto}.update-list{border-top:1px solid var(--line)}.update-list article{border-bottom:1px solid var(--line);grid-template-columns:150px 1fr;padding:16px 0;display:grid}.update-list time{color:var(--teal-dark);font-size:12px;font-weight:900}.update-list p{color:#4d6268;margin:0}.official-sources{border-radius:var(--radius-lg);background:var(--navy);color:#fff;margin-top:50px;padding:28px}.official-sources>.eyebrow{color:var(--signal);margin-bottom:10px}.official-sources>a{border-bottom:1px solid #ffffff21;justify-content:space-between;align-items:center;padding:17px 0;text-decoration:none;display:flex}.official-sources>a:last-child{border-bottom:0}.official-sources strong,.official-sources small{display:block}.official-sources small{color:#9fb0b5;margin-top:4px}.official-sources>a>span{color:var(--signal)}.conflict-note{color:#6e542b;background:#fff2d9;border-color:#efd5a6}.scenario-tabs{gap:8px;padding-bottom:4px;display:flex;overflow-x:auto}.scenario-tabs button{white-space:nowrap;border:1px solid var(--line);cursor:pointer;background:#fff;border-radius:999px;min-height:42px;padding:0 16px;font-size:12px;font-weight:800}.scenario-tabs button.active{background:var(--navy);color:#fff;border-color:var(--navy)}.scenario-card{border-radius:var(--radius-lg);border:1px solid var(--line);background:#fff;grid-template-columns:1.35fr .65fr;min-height:540px;margin-top:18px;display:grid;overflow:hidden}.scenario-stage{background:var(--blue-wash);place-items:center;min-width:0;display:grid}.scenario-stage svg{width:100%;height:auto}.scenario-copy{flex-direction:column;justify-content:center;padding:40px;display:flex}.scenario-copy h2{letter-spacing:-1.8px;margin:12px 0 4px;font-size:38px}.zh-line{color:var(--teal-dark);font-size:13px}.step-count{color:var(--muted);letter-spacing:1.4px;margin-top:38px;font-size:9px;font-weight:900}.scenario-copy h3{margin:13px 0 8px;font-size:19px}.scenario-copy>p{color:var(--muted);line-height:1.65}.scenario-controls{gap:8px;margin-top:20px;display:flex}.motorcycle,.circle-car,.enter-car,.scene-vehicle,.blind-zone,.safe-gap,.rain,.move-arrow,.conflict{transition:transform .7s cubic-bezier(.2,.8,.2,1),opacity .5s}.motorcycle.step-1{transform:translate(505px,204px)}.motorcycle.step-2{transform:translate(470px,160px)}.enter-car.step-2{transform:translate(184px,245px)rotate(-20deg)}.circle-car.step-1,.circle-car.step-2{transform:translate(368px,64px)rotate(53deg)}.scene-vehicle.follow.step-2{transform:translate(90px,224px)}.rain{opacity:.72}.session-shell{background:var(--paper);min-height:100vh;padding-bottom:98px}.session-header{background:var(--navy);color:#fff;grid-template-columns:50px minmax(200px,520px) 74px;justify-content:space-between;align-items:center;min-height:78px;padding:14px clamp(16px,4vw,54px);display:grid}.close-button{font-size:26px}.session-progress{color:#91a5ac;grid-template-columns:58px 1fr;align-items:center;gap:14px;font-size:11px;display:grid}.session-progress strong{color:#fff}.session-progress>div{background:#203842;border-radius:10px;height:5px;overflow:hidden}.session-progress i{background:var(--signal);height:100%;transition:width .3s;display:block}.session-timer{color:var(--signal);letter-spacing:1.1px;justify-self:end;font-size:12px;font-weight:900}.practice-banner{color:#765a20;text-align:center;background:#fff0c9;border-bottom:1px solid #ead092;padding:10px 18px;font-size:12px}.question-card{width:min(880px,100% - 34px);margin:40px auto 0;padding-bottom:112px}.question-meta{gap:7px;display:flex}.question-meta span,.source-pill{color:#486269;text-transform:uppercase;letter-spacing:1px;background:#dfe9e8;border-radius:6px;padding:6px 9px;font-size:9px;font-weight:900}.question-title-row{grid-template-columns:1fr auto;align-items:start;gap:22px;margin-top:22px;display:grid}.question-title-row h1{letter-spacing:-2px;font-size:clamp(28px,4.5vw,46px);line-height:1.14}.speak-button{border:1px solid var(--line);cursor:pointer;min-width:72px;height:64px;color:var(--teal-dark);background:#fff;border-radius:16px;flex-direction:column;justify-content:center;align-items:center;font-size:20px;display:flex}.speak-button span{color:var(--muted);text-transform:uppercase;font-size:9px;font-weight:900}.inline-alert{color:var(--red);font-size:13px}.language-hints{background:var(--blue-wash);border-radius:14px;flex-wrap:wrap;align-items:center;gap:7px;margin:4px 0 22px;padding:13px;display:flex}.hint-label{color:var(--teal-dark);margin-right:4px;font-size:9px;font-weight:900}.term-chip{color:#4a6067;background:#fff;border-radius:8px;padding:7px 9px;font-size:12px}.term-chip strong{color:var(--ink)}.answer-list{border:0;gap:11px;margin:0;padding:0;display:grid}.answer{text-align:left;border:1px solid var(--line);cursor:pointer;background:#fff;border-radius:16px;grid-template-columns:42px 1fr auto;align-items:center;gap:13px;width:100%;min-height:74px;padding:12px 18px;line-height:1.4;transition:border .15s,transform .15s,background .15s;display:grid}.answer:hover:not(:disabled){border-color:#7fa1a7;transform:translate(3px)}.answer-letter{color:#617379;background:#edf2ef;border-radius:10px;place-items:center;width:38px;height:38px;font-size:12px;font-weight:900;display:grid}.answer.selected{border-color:var(--teal-dark);box-shadow:inset 0 0 0 1px var(--teal-dark)}.answer.correct{border-color:var(--teal);background:#edf9f5}.answer.correct .answer-letter{background:var(--teal);color:#fff}.answer.wrong{border-color:var(--red);background:#fff1f2}.answer.wrong .answer-letter{background:var(--red);color:#fff}.answer-state{text-transform:uppercase;font-size:9px;font-weight:900}.feedback{border-left:5px solid var(--teal);background:#edf9f5;border-radius:16px;margin-top:18px;padding:20px}.feedback.wrong{border-left-color:var(--red);background:#fff1f2}.feedback.differs{border-left-color:var(--amber);background:#fff8e8}.feedback h2{margin:8px 0;font-size:19px}.feedback p{color:var(--muted);margin:0;font-size:13px;line-height:1.55}.review-actions{margin-top:18px}.review-sheet{border:1px solid var(--line);background:#fff;border-radius:14px;margin-top:12px;padding:14px}.review-tools{grid-template-columns:repeat(3,1fr);gap:8px;display:grid}.review-tool{border:1px solid var(--line);background:var(--paper);min-height:48px;color:var(--ink);cursor:pointer;border-radius:11px;padding:8px 10px;font-size:12px;font-weight:800}.review-tool.flagged{border-color:var(--amber);background:#fff4d9}.review-sheet>small{color:var(--muted);line-height:1.45;display:block}.session-footer{z-index:20;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);border-top:1px solid var(--line);min-height:82px;padding:12px clamp(17px,4vw,54px);padding-bottom:calc(12px + env(safe-area-inset-bottom));background:#f7f8f3f5;justify-content:space-between;align-items:center;display:flex;position:fixed;bottom:0;left:0;right:0}.session-footer>div{flex-direction:column;align-items:start;gap:4px;display:flex}.session-footer small{color:var(--muted)}.session-primary{min-width:210px}.result-page{text-align:center;flex-direction:column;justify-content:center;align-items:center;min-height:calc(100vh - 100px);display:flex}.result-orb{width:150px;height:150px;color:var(--red);border:12px solid #f0ccd0;border-radius:50%;justify-content:center;align-items:baseline;margin-bottom:24px;padding-top:38px;display:flex}.result-orb.pass{color:var(--teal-dark);border-color:#b8ebe1}.result-orb.neutral{border-color:var(--blue-wash);color:var(--teal-dark)}.result-orb strong{letter-spacing:-3px;font-size:48px}.result-orb span{font-weight:800}.result-page h1{letter-spacing:-3px;max-width:700px;margin:12px 0;font-size:clamp(36px,6vw,62px)}.result-page>p{max-width:620px;color:var(--muted);line-height:1.65}.result-review{text-align:left;border-top:1px solid var(--line);width:min(680px,100%);margin:18px 0}.result-review h2{font-size:18px}.result-review>div{border-bottom:1px solid var(--line);padding:12px 0}.result-review span{color:var(--teal-dark);font-size:9px;font-weight:900}.result-review p{margin:5px 0 0;font-size:13px}.result-page>.button{max-width:420px}.completion-warning{text-align:left;color:#6a5427;background:#fff4d9;border:1px solid #ead092;border-radius:14px;width:min(620px,100%);margin:14px 0 24px;padding:15px 17px}.completion-warning strong,.completion-warning span{display:block}.completion-warning span{margin-top:4px;font-size:13px;line-height:1.45}.bottom-nav{z-index:45;left:50%;bottom:calc(24px + env(safe-area-inset-bottom));-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);background:#071923f5;border-radius:18px;grid-template-columns:repeat(5,1fr);gap:2px;min-width:520px;padding:7px;display:grid;position:fixed;transform:translate(-50%);box-shadow:0 20px 50px #07192347}.bottom-nav button{color:#8fa3aa;cursor:pointer;background:0 0;border:0;border-radius:12px;flex-direction:column;justify-content:center;align-items:center;gap:3px;min-height:54px;font-size:9px;font-weight:800;display:flex}.bottom-nav button span{font-size:18px;line-height:1}.bottom-nav button.active{color:var(--navy);background:var(--signal)}.trust-footer{color:#7d8d91;justify-content:space-between;width:calc(100% - 36px);max-width:1180px;margin:0 auto;padding:0 0 10px;font-size:10px;display:flex}.persistence-warning{z-index:80;color:#812c37;text-align:center;background:#fff1f2;border:1px solid #e3a9ae;border-radius:12px;width:min(620px,100% - 28px);padding:11px 15px;font-size:12px;font-weight:700;position:fixed;top:82px;left:50%;transform:translate(-50%);box-shadow:0 12px 30px #00000026}.boundary-backdrop{z-index:120;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#000a0fc7;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.boundary-dialog{background:var(--paper);border-radius:26px;width:min(680px,100%);padding:clamp(28px,6vw,54px);box-shadow:0 30px 90px #00000061}.boundary-dialog h2{letter-spacing:-3px;margin:12px 0 16px;font-size:clamp(34px,6vw,58px);line-height:1}.boundary-dialog>p{color:var(--muted);line-height:1.65}.boundary-dialog .boundary-zh{background:var(--blue-wash);color:var(--teal-dark);border-radius:12px;padding:13px 15px;font-size:13px}.boundary-dialog>div{flex-wrap:wrap;gap:10px;margin-top:24px;display:flex}.answer-next{margin-top:20px}.settings-backdrop{z-index:100;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);background:#000a0fa8;justify-content:end;display:flex;position:fixed;inset:0}.settings-panel{background:var(--paper);width:min(460px,100%);height:100%;padding:30px;overflow-y:auto;box-shadow:-20px 0 60px #00000040}.settings-head{border-bottom:1px solid var(--line);justify-content:space-between;align-items:start;padding-bottom:24px;display:flex}.settings-head h2{letter-spacing:-1.5px;margin:8px 0 0;font-size:34px}.settings-head .icon-button{color:var(--ink);border-color:var(--line)}.toggle-row,.slider-row{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:20px;padding:22px 0;display:flex}.toggle-row strong,.toggle-row small,.slider-row strong,.slider-row small{display:block}.toggle-row small,.slider-row small{color:var(--muted);margin-top:4px;line-height:1.45}.toggle-row input{appearance:none;cursor:pointer;background:#cdd6d2;border-radius:20px;flex:none;width:48px;height:28px;position:relative}.toggle-row input:after{content:"";background:#fff;border-radius:50%;width:22px;height:22px;transition:transform .2s;position:absolute;top:3px;left:3px}.toggle-row input:checked{background:var(--teal-dark)}.toggle-row input:checked:after{transform:translate(20px)}.slider-row{flex-direction:column;align-items:stretch}.slider-row input{width:100%;accent-color:var(--teal-dark)}.settings-data{background:var(--blue-wash);border-radius:18px;margin-top:28px;padding:22px}.settings-data h3{margin-bottom:7px}.settings-data p{color:var(--muted);font-size:13px;line-height:1.5}.settings-data .button{margin-right:8px}.danger-button{color:var(--red);cursor:pointer;background:0 0;border:0;min-height:48px;font-weight:800}.settings-version{flex-direction:column;gap:5px;margin-top:28px;display:flex}.settings-version span{color:var(--muted);letter-spacing:1.2px;font-size:9px;font-weight:900}.settings-version small{color:var(--muted)}.quiet-motion *,.quiet-motion :before,.quiet-motion :after{scroll-behavior:auto!important;transition-duration:.001ms!important;animation-duration:.001ms!important;animation-iteration-count:1!important}@media (max-width:880px){.hero-grid,.scenario-card,.journey-layout,.counter-layout{grid-template-columns:1fr}.exam-card{min-height:450px}.metric-grid{grid-template-columns:1fr 1fr}.metric-card.action-card{grid-column:1/-1}.topic-grid{grid-template-columns:repeat(3,1fr)}.boundary-card{position:static}.scenario-card{min-height:0}.scenario-copy{padding:30px}}@media (max-width:640px){.app-shell{padding-bottom:calc(104px + env(safe-area-inset-bottom))}.app-header{height:68px;padding:0 14px}.brand small,.network-state,.install-button{display:none}.brand-mark{width:32px;height:35px}.brand strong{font-size:16px}.language-button{padding:0 9px;font-size:10px}.header-actions{gap:6px}.page{width:min(100% - 28px,1180px);padding:34px 0 42px}.page-heading{flex-direction:column;align-items:start;gap:15px;margin-bottom:27px}.page-heading h1{letter-spacing:-2.7px;font-size:44px}.page-heading>p{font-size:14px}.mission-card{min-height:510px;padding:28px 22px}.mission-copy{margin-top:54px}.mission-copy h1{letter-spacing:-2.8px;font-size:44px}.mission-stats{gap:14px}.mission-stats div,.mission-stats strong,.mission-stats span{display:block}.mission-stats span{margin-top:3px;font-size:8px}.exam-card{min-height:430px}.section-heading{flex-direction:column;align-items:start;gap:12px;margin-top:44px}.section-heading h2{font-size:31px}.metric-grid,.lesson-strip,.practice-modes,.weak-list{grid-template-columns:1fr}.metric-card.action-card,.weak-list>.button{grid-column:auto}.lesson-strip{scroll-snap-type:x mandatory;padding-bottom:8px;display:flex;overflow-x:auto}.lesson-strip button{scroll-snap-align:start;flex:0 0 82%}.mode-card{min-height:270px}.topic-grid{grid-template-columns:repeat(2,1fr)}.topic-grid button{min-height:130px}.review-summary{grid-template-columns:1fr;gap:0}.review-summary div{border-bottom:1px solid #ffffff21;border-right:0;min-height:80px;padding-left:0}.review-summary div:last-child{border-bottom:0}.guide-alert{grid-template-columns:1fr;gap:8px}.counter-detail>div{grid-template-columns:1fr;gap:5px}.update-list article{grid-template-columns:105px 1fr;gap:10px}.official-sources{padding:22px}.official-sources>a{align-items:start}.official-sources small{line-height:1.4}.scenario-page{width:100%}.scenario-page>.page-heading,.scenario-tabs,.scenario-page>.source-note{margin-inline:14px}.scenario-card{border-inline:0;border-radius:0}.scenario-copy{padding:25px 20px 30px}.scenario-copy h2{font-size:31px}.session-header{grid-template-columns:44px 1fr 58px;gap:7px;min-height:68px;padding:10px 12px}.session-progress{grid-template-columns:44px 1fr;gap:6px}.question-card{margin-top:27px}.question-title-row{grid-template-columns:1fr;gap:8px}.question-title-row h1{letter-spacing:-1.3px;font-size:29px}.speak-button{flex-direction:row;justify-self:start;gap:7px;width:auto;min-width:0;height:42px;padding:0 13px}.answer{grid-template-columns:38px 1fr;min-height:70px;padding:10px 13px}.answer-state{grid-column:2}.session-footer{min-height:84px;padding:9px 13px;padding-bottom:calc(9px + env(safe-area-inset-bottom))}.session-footer small{display:none}.source-pill{font-size:7px}.session-footer .button{min-width:150px}.review-tools{grid-template-columns:1fr}.bottom-nav{width:calc(100% - 22px);min-width:0;bottom:calc(10px + env(safe-area-inset-bottom));border-radius:16px;padding:5px}.bottom-nav button{min-height:52px}.trust-footer{display:none}.settings-panel{padding:24px 20px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.001ms!important;animation-duration:.001ms!important;animation-iteration-count:1!important}}
