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@media(max-height:800px) and (min-width:701px){.site-header{height:88px}main,.landing{min-height:calc(100svh - 88px)}.landing{max-width:850px;padding-top:15px}.landing h1{font-size:84px}.landing-heading{margin-bottom:30px}.mode-choice{min-height:225px;padding:25px 28px}.mode-title{font-size:35px;margin-top:12px}.mode-caption{font-size:14px}.mode-symbol{transform:scale(.85);transform-origin:top left;height:53px}.landing-bottom{padding-top:14px}}
@media(max-width:1000px){.site-header{padding:0 40px;height:96px}.landing{padding-left:65px;padding-right:65px;min-height:calc(100svh - 96px)}main{min-height:calc(100svh - 96px)}.landing h1{font-size:92px}.mode-choice{padding:27px;min-height:244px}.mode-title{font-size:38px}.mode-caption{font-size:13px;gap:7px}.mode-arrow{right:24px;top:28px;width:40px;height:40px}.study-page,.results-page,.utility-page{padding-top:15px}}
@media(max-width:700px){.site-header{height:87px;padding:0 25px}.brand{font-size:22px;gap:9px}.brand svg{width:31px;height:31px}.header-tools{gap:15px}.header-tools .icon-button{height:41px;width:41px}.part-label{font-size:9px;letter-spacing:1.4px}main{min-height:calc(100svh - 87px)}.landing{padding:22px 28px 14px;max-width:580px;min-height:calc(100svh - 87px);justify-content:center}.landing h1{font-size:clamp(72px,15vw,100px);line-height:1.02}.landing-heading{margin:0 0 30px 12px}.landing-heading:before{left:-15px;top:9px;width:4px;height:22px}.mode-choices{grid-template-columns:1fr;gap:14px}.mode-choice{min-height:146px;border-radius:22px;padding:24px 25px 24px 100px;justify-content:center}.mode-title{font-size:34px;margin-top:0;letter-spacing:-1.7px}.mode-caption{font-size:13px;margin-top:7px}.mode-symbol{position:absolute;left:24px;top:42px;width:50px;height:52px;transform:scale(.9);transform-origin:top left}.mode-arrow{width:33px;height:33px;right:20px;top:22px;border-color:transparent}.mode-arrow .icon{width:21px;height:21px}.resume-tag{bottom:10px;right:20px;font-size:10px;padding:3px 8px}.mode-choice:has(.resume-tag){padding-bottom:35px;padding-top:17px}.mode-choice:hover{transform:translateY(-4px)}.landing-bottom{padding:15px 4px 0}.subtle-button{font-size:12px}.motion-button{height:32px;width:32px}.study-page,.results-page,.utility-page{padding:8px 20px 45px}.study-heading{font-size:18px}.timer{font-size:15px;gap:5px}.timer .icon{width:16px}.session-progress{margin:14px 0 19px;gap:20px}.session-progress>button{font-size:16px}.question-card{border-radius:22px;padding:20px}.question-meta{font-size:12px;gap:5px;align-items:flex-start}.question-meta>span{max-width:70%;padding-top:8px}.question-meta .icon-button{width:31px;height:31px}.question-meta .icon{width:17px;height:17px}.question-text{font-size:24px;line-height:1.55;margin:21px 0 25px;letter-spacing:-.75px}.answer-option{font-size:18px;min-height:69px;padding:14px 13px;gap:13px;border-radius:13px}.answer-letter{width:30px;height:30px;border-radius:9px;font-size:13px}.answers{gap:11px}.answer-status{width:17px;height:17px}.question-controls{margin-top:25px}.button{font-size:17px;padding:13px 20px;min-height:53px;gap:12px}.button .icon{width:20px;height:20px}.feedback{padding:20px 17px;margin-top:22px}.feedback h2{font-size:16px}.feedback p{font-size:17px;line-height:1.7}.source-ref{font-size:12px;margin-top:16px}.solution-graphic{margin-top:18px}.equation{font-size:17px;padding:12px}.graphic-labels{gap:14px}.graphic-labels>span{font-size:11px}.graphic-labels b{font-size:14px}.dialog-heading h2{font-size:25px}dialog{padding:23px;border-radius:23px;max-height:calc(100svh - 32px)}.dialog-actions .button{font-size:15px;padding:12px 15px}.map-grid{grid-template-columns:repeat(6,1fr);gap:7px}.map-number{height:38px;font-size:12px}.dialog-copy{font-size:19px}.menu-links a,.menu-links button{font-size:21px;padding:16px 10px}.source-books a{font-size:17px;padding:18px 15px}.source-books small{font-size:12px}.source-books .icon:first-child{width:22px}.result-summary{padding-top:8px;padding-bottom:30px}.score-ring{width:140px;height:140px;margin-bottom:22px}.score-ring strong{font-size:37px}.score-ring strong span{font-size:18px}.result-summary h1{font-size:36px}.result-summary p{font-size:16px}.result-actions{gap:10px}.result-actions .button{font-size:14px;padding:12px 14px;gap:10px}.result-actions .icon{width:18px}.component-scores{grid-template-columns:repeat(2,1fr);gap:11px;margin-bottom:32px}.component-scores>div{padding:17px}.component-scores>div>span{font-size:12px}.component-scores strong{font-size:26px}.review-heading h2{font-size:21px}.filter button{font-size:12px;padding:7px 11px}.review-item summary{font-size:16px;padding:18px 15px;gap:10px}.review-number{width:26px;height:26px;font-size:11px}.review-item summary>.icon{width:16px}.review-body{padding:0 15px 18px}.review-body .your-answer{font-size:14px}.review-body .right-answer{font-size:16px}.page-top{gap:10px;font-size:18px}.page-top h1{font-size:29px}.saved-card{padding:20px}.saved-card h2{font-size:23px}.saved-card details p{font-size:17px}}
@media(max-width:370px){.site-header{padding:0 19px}.header-tools{gap:10px}.landing{padding-left:23px;padding-right:23px}.landing h1{font-size:69px}.mode-choice{padding-left:87px;min-height:141px}.mode-symbol{left:19px;transform:scale(.8)}.mode-title{font-size:31px}.mode-caption{font-size:11px}.study-page{padding-left:13px;padding-right:13px}.question-card{padding:18px 16px}.question-text{font-size:23px}.question-meta>span{max-width:66%}.answer-option{font-size:17px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
.mode-caption{font-size:17px}.subtle-button{padding:8px 12px;border-radius:20px;background:#ffffffa6;backdrop-filter:blur(12px);color:#466d5d}.part-label{padding:6px 10px;border-radius:20px;background:#ffffff70}
@media(max-width:700px){.mode-title{font-size:36px}.mode-caption{font-size:16px}.part-label{font-size:9px;padding:5px 7px}.header-tools{gap:8px}}
@media(max-width:370px){.mode-title{font-size:32px}.mode-caption{font-size:14px}}

/* Local learning workspace v3 */
.identity-card{padding:27px 30px;margin-bottom:25px;border:1px solid #ffffffbe;border-radius:23px;background:#ffffffbc;backdrop-filter:blur(24px)}.identity-form{display:grid;grid-template-columns:1fr 1fr auto;gap:16px;align-items:end}.identity-form label{display:grid;gap:7px;font-size:15px;font-weight:550;color:#647e70}.identity-form input{width:100%;min-width:0;background:#fff;border:1px solid var(--line);border-radius:11px;padding:13px 14px;color:var(--ink);font:18px var(--font);height:51px}.identity-form>.button{min-height:51px;font-size:16px;padding:12px 17px}.identity-form>small{font-size:11px;color:#81978a;grid-column:1/-1}.identity-ready{display:flex;align-items:center;gap:17px;font-size:24px;font-weight:550}.identity-ready>span{overflow-wrap:anywhere}.identity-ready small{display:block;color:var(--muted);font-size:12px;font-weight:400;margin-top:4px}.identity-ready>.icon-button{margin-left:auto}.profile-avatar{height:49px;width:49px;border-radius:15px;display:grid;place-items:center;background:#e5f5ec;color:#419074;flex-shrink:0}.mode-choice:disabled{opacity:.55;cursor:default}.mode-choice:disabled:hover{transform:none;box-shadow:0 12px 50px #314d3f07}.mode-choice:disabled:hover .mode-arrow{transform:none;background:transparent;color:var(--muted);border-color:transparent}.storage-message{font-size:13px;color:var(--red);margin-top:18px}.language-toggle{display:flex;align-items:center;gap:6px;background:transparent;white-space:nowrap;font-size:13px;padding:10px 3px}.language-toggle b{font-weight:400;color:#93a79b}.language-toggle b.active{font-weight:700;color:var(--teal)}.language-toggle i{font-style:normal;color:#b2beb6}.theme-toggle{font-size:26px}.header-tools{gap:15px}.source-ref{background:transparent;text-align:left;line-height:1.6}.once-label,.locked-label{font-size:12px;color:#8ca193;font-family:var(--font);font-weight:400}.locked-label{display:block;margin-top:13px}.study-page{max-width:1330px}.study-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:25px;align-items:start;perspective:1600px}.study-page .question-card{transform-origin:left center;backface-visibility:hidden;min-width:0}.question-tracker{padding:21px 16px;background:#fff;border:1px solid var(--line);border-radius:22px;position:sticky;top:25px}.tracker-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:17px}.tracker-heading h2{font-size:18px;letter-spacing:-.5px}.tracker-heading>span{font-size:12px;color:var(--muted)}.tracker-grid{display:grid;grid-template-columns:repeat(10,minmax(0,1fr));gap:5px}.track-number{height:29px;min-width:0;background:#e9edeb;border:1px solid transparent;border-radius:5px;font-size:11px;color:#718179;font-variant-numeric:tabular-nums;padding:0;position:relative}.track-number.correct{background:#d4eedf;color:#236448;border-color:#a6d4b9}.track-number.wrong{background:#f9dadd;color:#a52c3f;border-color:#e8adb7}.track-number.current{outline:2px solid var(--ink);outline-offset:2px;z-index:1}.tracker-legend{display:flex;flex-wrap:wrap;gap:11px;margin-top:18px;font-size:10px;color:#84988a}.tracker-legend span{display:flex;align-items:center;gap:4px}.tracker-legend i{width:7px;height:7px;border-radius:2px;background:#dce2df}.tracker-legend i.correct{background:#65bb89}.tracker-legend i.wrong{background:#dc7a89}.tracker-finish{width:100%;margin-top:20px;font-size:15px;min-height:43px;padding:10px}.session-progress>span{font-size:17px;color:#7b9082;white-space:nowrap}.question-statements{padding-left:43px;margin:-10px 0 30px;list-style-type:upper-roman;font-size:21px;line-height:1.7}.question-statements li{padding-left:11px;margin-bottom:9px}.question-statements li::marker{font-weight:600}.review-body .question-text{font-size:21px}.review-body .question-statements{font-size:18px;margin-top:15px}.results-page>.question-tracker{position:static;margin-bottom:35px}.results-page>.question-tracker .track-number{height:36px;font-size:13px}.official-notes{padding:46px 65px;background:#fff;border:1px solid var(--line);border-radius:23px;max-width:930px;margin:auto;font-size:20px;line-height:1.95;overflow-wrap:anywhere}.official-notes>header{display:flex;justify-content:space-between;gap:20px;align-items:center;border-bottom:1px solid var(--line);padding-bottom:22px;margin-bottom:30px;color:var(--teal);font-size:15px}.official-notes>header small{font-size:12px;color:var(--muted)}.official-notes p{margin:0 0 23px}.official-notes h3{font-family:var(--display);font-size:23px;line-height:1.6;margin:29px 0 18px;letter-spacing:-.3px}.menu-links a,.menu-links button{min-width:0}.landing{padding-top:25px}
:root[data-theme=dark]{color-scheme:dark;--paper:#0c1719;--ink:#e3efe9;--muted:#94ada0;--line:#2b4140;--teal:#52ccba;--red:#f27582;--red-dark:#e55c6e}html[data-theme=dark],html[data-theme=dark] body{background:var(--paper)}[data-theme=dark] .ambient{background:#09171a}[data-theme=dark] .ambient-wash{opacity:.2}[data-theme=dark] .mode-choice{background:linear-gradient(135deg,#18302ed9,#132522bb);border-color:#3a514c99;box-shadow:inset 0 0 0 1px #52635b22}[data-theme=dark] .identity-card{background:#142a26c4;border-color:#3a514c99}[data-theme=dark] .identity-form input,[data-theme=dark] .question-card,[data-theme=dark] .question-tracker,[data-theme=dark] .saved-card,[data-theme=dark] .review-item,[data-theme=dark] .answer-option,[data-theme=dark] .official-notes,[data-theme=dark] dialog{background:#152522;color:var(--ink)}[data-theme=dark] .identity-form label{color:#b1c8bb}[data-theme=dark] .identity-form input{background:#10201e}[data-theme=dark] .profile-avatar{background:#25483b;color:#8dddb5}[data-theme=dark] .mode-caption{color:#9bb6a7}[data-theme=dark] .mode-arrow{border-color:#3c5149}[data-theme=dark] .mode-choice:hover .mode-arrow{color:#132922}[data-theme=dark] .mode-choice:before{opacity:.2}[data-theme=dark] .header-tools .icon-button,[data-theme=dark] .part-label{background:#21382d80;border-color:#375044;color:#c0d8ca}[data-theme=dark] .icon-button:hover{background:#284139}[data-theme=dark] .subtle-button{background:#17352a9c;color:#b5d8c2}[data-theme=dark] .resume-tag{background:#2c5140;color:#b9e3c9}[data-theme=dark] .answer-option:not(:disabled):hover{background:#1d352d}[data-theme=dark] .answer-option.selected{background:#1b3d33;border-color:#63b99a}[data-theme=dark] .answer-option.correct{background:#193f2e;color:#b0e5c7;border-color:#388963}[data-theme=dark] .answer-option.wrong{background:#4b2831;color:#ffc0c8;border-color:#b76275;box-shadow:none}[data-theme=dark] .answer-letter{border-color:#3c5547;color:#afc4b5}[data-theme=dark] .feedback{background:#203a2b;color:#c0d9c8}[data-theme=dark] .feedback.bad{background:#372c2b}[data-theme=dark] .feedback.bad h2{color:#f1a7a4}[data-theme=dark] .button{color:#17271f}[data-theme=dark] .button.outline{color:#afc9b9}[data-theme=dark] .button.outline:hover{background:#233e31}[data-theme=dark] .track-number{background:#30433a;color:#a5b7aa}[data-theme=dark] .track-number.correct{background:#24563b;color:#c7f2d4;border-color:#43835a}[data-theme=dark] .track-number.wrong{background:#663544;color:#ffced6;border-color:#a36577}[data-theme=dark] .filter{background:#1b3326}[data-theme=dark] .filter button.active{background:#2c4a37}[data-theme=dark] .review-number{background:#294332;color:#aec3b0}[data-theme=dark] .right-answer{color:#8ed5ab}[data-theme=dark] .equation{background:#10281e}[data-theme=dark] .session-progress>div{background:#2a4034}
@media(max-width:1050px){.study-layout{grid-template-columns:minmax(0,1fr) 246px;gap:18px}.study-page{padding-left:25px;padding-right:25px}.question-card{padding:25px}.question-tracker{padding:19px 13px}.tracker-grid{gap:4px}.track-number{font-size:10px;height:28px}.identity-form{grid-template-columns:1fr 1fr}.identity-form>.button{grid-column:1/-1}.identity-form>small{text-align:center}}
@media(max-width:800px){.study-layout{grid-template-columns:1fr}.question-tracker{position:static;padding:23px}.track-number{height:36px;font-size:13px}.tracker-grid{gap:7px}.tracker-legend{font-size:12px}.tracker-finish{display:none}.official-notes{padding:30px;font-size:19px}.official-notes>header{flex-direction:column;align-items:flex-start;gap:5px}}
@media(max-width:700px){.site-header{padding:0 19px;height:82px}.header-tools{gap:5px}.brand{font-size:20px;gap:6px}.brand svg{height:27px;width:27px}.header-tools .part-label{display:none}.header-tools .icon-button{height:35px;width:35px}.language-toggle{font-size:12px;padding:6px 2px;gap:4px}.theme-toggle{font-size:22px}.landing{padding:20px 24px;min-height:calc(100svh - 82px)}.identity-card{padding:21px;margin-bottom:20px}.identity-form{gap:14px;grid-template-columns:1fr}.identity-form input{height:49px;font-size:18px}.identity-form label{font-size:14px}.identity-form>.button{font-size:17px}.identity-ready{font-size:20px;gap:11px}.identity-ready small{font-size:11px}.profile-avatar{height:40px;width:40px}.identity-ready>.icon-button{width:34px;height:34px}.mode-choice{min-height:130px}.mode-symbol{top:33px}.mode-title{font-size:34px}.mode-caption{font-size:15px}.study-page{padding:8px 17px 45px}.question-card{padding:22px 18px}.question-statements{font-size:19px;padding-left:39px;margin-top:-7px}.question-statements li{padding-left:6px;margin-bottom:9px}.question-tracker{padding:21px 15px}.tracker-grid{gap:5px}.track-number{height:32px;font-size:11px}.tracker-legend{font-size:11px}.official-notes{padding:24px 21px;font-size:18px;line-height:1.85}.official-notes h3{font-size:21px}.official-notes>header{font-size:13px}.official-notes>header small{font-size:11px}.once-label{font-size:11px}.session-progress{margin-top:12px}}
@media(max-width:370px){.brand{font-size:18px}.site-header{padding:0 13px}.header-tools .icon-button{width:32px}.language-toggle{font-size:11px}.landing{padding-left:19px;padding-right:19px}.mode-title{font-size:30px}.mode-caption{font-size:13px}.track-number{font-size:10px;height:29px}.tracker-grid{gap:4px}.study-page{padding-left:11px;padding-right:11px}}
@media(max-width:800px){.tracker-finish{display:flex}}

/* v4: motion + polish layer */
:root{--ease-out:cubic-bezier(.2,.8,.2,1);--spring:cubic-bezier(.34,1.56,.64,1);--card:#ffffff;--soft:#eef4f1;--good:#2f9e72;--bad:#d9475a}
:root[data-theme=dark]{--card:#152522;--soft:#1b302b;--good:#5cc995;--bad:#f07a8a}
html{scroll-behavior:smooth;scrollbar-gutter:stable}
.landing{padding-left:max(42px,env(safe-area-inset-left,0px));padding-right:max(42px,env(safe-area-inset-right,0px))}
.landing-heading{margin:0 0 30px}.landing-heading:before{display:none}
.eyebrow{font-size:13px;letter-spacing:.14em;text-transform:uppercase;font-weight:650;color:var(--teal);margin-bottom:12px}
.landing h1{font-size:clamp(42px,5.4vw,70px);line-height:1.04;letter-spacing:-.055em;text-wrap:balance}
.landing h1 span{position:relative;display:inline-block;color:var(--red)}
.scribble{position:absolute;left:-2%;bottom:-.08em;width:104%;height:.26em;overflow:visible}
.scribble path{fill:none;stroke:var(--teal);stroke-width:6;stroke-linecap:round;stroke-dasharray:220;stroke-dashoffset:0;animation:draw 1s .55s var(--ease-out) backwards}
.facts{display:flex;flex-wrap:wrap;gap:8px;list-style:none;margin:20px 0 0;padding:0}
.facts li{font-size:14px;color:var(--muted);padding:6px 13px;border-radius:99px;background:color-mix(in srgb,var(--card) 70%,transparent);border:1px solid color-mix(in srgb,var(--line) 70%,transparent);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.facts b{color:var(--ink);font-weight:650;font-variant-numeric:tabular-nums}
.intro .landing>*,.intro .mode-choice{animation:rise .8s var(--ease-out) backwards}
.intro .landing>:nth-child(2){animation-delay:.08s}.intro .mode-choice:nth-child(1){animation-delay:.16s}.intro .mode-choice:nth-child(2){animation-delay:.24s}.intro .landing>:nth-child(4){animation-delay:.32s}
.mode-choice{transform:perspective(900px) rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg)) translateY(var(--lift,0px));transition:transform .5s var(--ease-out),box-shadow .4s,border-color .3s,opacity .3s}
.mode-choice:after{content:'';position:absolute;inset:0;z-index:-1;opacity:0;transition:opacity .35s;background:radial-gradient(360px circle at var(--mx,50%) var(--my,50%),color-mix(in srgb,var(--red) 16%,transparent),transparent 65%)}
.exam-choice:after{background:radial-gradient(360px circle at var(--mx,50%) var(--my,50%),color-mix(in srgb,var(--teal) 18%,transparent),transparent 65%)}
.mode-choice:hover{--lift:-8px;transform:perspective(900px) rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg)) translateY(var(--lift))}
.mode-choice:hover:after{opacity:1}.mode-choice:hover .mode-symbol{transform:scale(1.08) rotate(-4deg)}
.mode-symbol{transition:transform .5s var(--spring)}
.mode-choice:focus-visible{outline-offset:4px}
.mode-choice[aria-describedby] .mode-arrow{color:var(--muted)}
.identity-card.nudge{animation:nudge .55s var(--ease-out);box-shadow:0 0 0 3px color-mix(in srgb,var(--red) 45%,transparent)}
.identity-form input{transition:border-color .2s,box-shadow .2s}
.identity-form input:focus{outline:0;border-color:var(--teal);box-shadow:0 0 0 4px color-mix(in srgb,var(--teal) 18%,transparent)}
.session-progress>div>i{transition:width .55s var(--ease-out);background:linear-gradient(90deg,var(--teal),color-mix(in srgb,var(--teal) 60%,#7fd6c6))}
.answer-option{transition:background .2s,border-color .2s,box-shadow .25s,transform .25s var(--ease-out)}
.answer-option:not(:disabled):hover .answer-letter{border-color:var(--teal);color:var(--teal)}
.answer-letter{transition:background .25s,color .25s,border-color .25s}
.just-answered .answer-option.correct{animation:pop .5s var(--spring)}
.just-answered .answer-option.correct .answer-letter{animation:glow 1s ease-out}
.just-answered .answer-option.wrong{animation:shake .42s ease-in-out}
.just-answered .answer-status{animation:stamp .45s .1s var(--spring) backwards}
.just-answered .feedback{animation:rise .5s .12s var(--ease-out) backwards}
.just-answered .cost-bar i{animation:grow-x .8s .3s var(--ease-out) backwards;transform-origin:left}
.just-answered .track-number.current{animation:pop .5s var(--spring)}
.track-number{transition:transform .2s var(--ease-out),background .2s}
.track-number:hover{transform:translateY(-2px)}
.score-ring.pass .score-fill{stroke:var(--good)}.score-ring.fail .score-fill{stroke:var(--bad)}
.fresh .score-fill{animation:ring-in 1.2s .1s var(--ease-out) backwards}
.fresh .result-summary>*:not(.score-ring){animation:rise .7s var(--ease-out) backwards}
.fresh .result-summary h1{animation-delay:.5s}.fresh .result-summary p{animation-delay:.6s}.fresh .result-actions{animation-delay:.7s}
.fresh .score-ring{animation:pop .7s var(--spring) backwards}
.components{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:0 0 10px}
.component{padding:18px;border:1px solid var(--line);border-radius:18px;background:var(--card);min-width:0}
.component-top{display:flex;justify-content:space-between;align-items:flex-start;gap:8px;margin-bottom:14px}
.component-top span{font-size:14px;line-height:1.35;font-weight:550}.component-top small{display:block;font-size:12px;color:var(--muted);font-weight:400;margin-top:2px}
.component-top b{font:700 26px/1 var(--display);letter-spacing:-.04em;font-variant-numeric:tabular-nums}.component-top b small{display:inline;font-size:14px;color:var(--muted);letter-spacing:0}
.meter{position:relative;height:8px;border-radius:4px;background:var(--soft)}
.meter i{position:absolute;inset:0 auto 0 0;width:var(--w);border-radius:4px;background:var(--good)}.meter i.low{background:var(--bad)}
.meter em{position:absolute;left:55%;top:-4px;bottom:-4px;width:2px;border-radius:1px;background:var(--ink);opacity:.45}
.fresh .meter i{animation:grow-x 1s .5s var(--ease-out) backwards;transform-origin:left}
.meter-key{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted);margin:0 0 30px}.meter-key em{width:2px;height:12px;background:var(--ink);opacity:.45;border-radius:1px}
.trend{margin:0 0 20px;padding:20px 20px 12px;border:1px solid var(--line);border-radius:20px;background:var(--card)}
.trend figcaption{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;font-size:14px;font-weight:600;margin-bottom:8px}
.trend-key{display:flex;align-items:center;gap:6px;font-size:12px;font-weight:400;color:var(--muted)}.trend-key i{width:9px;height:9px;border-radius:2px;margin-left:8px}.trend-key i.pass{background:var(--good)}.trend-key i.fail{background:var(--bad)}
.trend svg{width:100%;height:auto;display:block;overflow:visible}
.trend line.grid{stroke:var(--line);stroke-width:1}.trend line.pass-line{stroke:var(--ink);stroke-opacity:.4;stroke-width:1.5;stroke-dasharray:4 4}
.trend text{font:11px var(--font);fill:var(--muted);font-variant-numeric:tabular-nums}.trend text.last{fill:var(--ink);font-weight:650}
.trend .bar path{transform-box:fill-box;transform-origin:bottom;animation:grow-y .7s calc(var(--i)*40ms) var(--ease-out) backwards;transition:opacity .2s}
.trend .bar.pass path{fill:var(--good)}.trend .bar.fail path{fill:var(--bad)}.trend .hit{fill:transparent}
.trend svg:hover .bar path{opacity:.45}.trend svg .bar:hover path{opacity:1}
.history-score{display:flex;align-items:center;gap:14px}
.history-score em{font-style:normal;font-size:12px;font-weight:600;padding:3px 10px;border-radius:99px}
.history-score em.pass{color:var(--good);background:color-mix(in srgb,var(--good) 14%,transparent)}.history-score em.fail{color:var(--bad);background:color-mix(in srgb,var(--bad) 13%,transparent)}
.history-row{animation:rise .5s var(--ease-out) backwards}
::view-transition-old(root){animation:fade-out .18s ease-in both}
::view-transition-new(root){animation:rise .38s var(--ease-out) both}
dialog[open]{animation:dialog-in .32s var(--spring)}dialog[open]::backdrop{animation:fade-in .25s ease-out}
.menu-links>*{animation:rise .4s var(--ease-out) backwards}.menu-links>:nth-child(2){animation-delay:.04s}.menu-links>:nth-child(3){animation-delay:.08s}.menu-links>:nth-child(4){animation-delay:.12s}
.menu-links .icon{transition:transform .25s var(--ease-out)}.menu-links a:hover .icon:last-child,.menu-links button:hover .icon:last-child{transform:translateX(4px)}
#toast{transition:opacity .25s,transform .35s var(--spring)}
.button .icon{transition:transform .3s var(--ease-out)}.button:hover .icon{transform:translateX(3px)}
.theme-toggle .icon{width:21px;height:21px;transition:transform .5s var(--spring)}.theme-toggle:hover .icon{transform:rotate(-25deg)}
.review-item[open] .review-body{animation:rise .35s var(--ease-out)}
.review-item summary{transition:background .2s;border-radius:17px}.review-item summary:hover{background:var(--soft)}
.official-notes{animation:rise .45s var(--ease-out)}
.confetti{position:fixed;inset:0;width:100vw;height:100vh;pointer-events:none;z-index:200}
@keyframes rise{from{opacity:0;transform:translateY(14px)}}
@keyframes fade-in{from{opacity:0}}@keyframes fade-out{to{opacity:0}}
@keyframes draw{from{stroke-dashoffset:220}}
@keyframes pop{0%{transform:scale(.96)}55%{transform:scale(1.025)}100%{transform:none}}
@keyframes shake{20%,60%{transform:translateX(-6px)}40%,80%{transform:translateX(6px)}}
@keyframes stamp{from{opacity:0;transform:scale(.3) rotate(-30deg)}}
@keyframes glow{0%{box-shadow:0 0 0 0 color-mix(in srgb,var(--good) 55%,transparent)}100%{box-shadow:0 0 0 14px transparent}}
@keyframes grow-x{from{transform:scaleX(0)}}@keyframes grow-y{from{transform:scaleY(0)}}
@keyframes ring-in{from{stroke-dashoffset:339.29}}
@keyframes nudge{20%{transform:translateX(-8px)}45%{transform:translateX(7px)}70%{transform:translateX(-4px)}}
@keyframes dialog-in{from{opacity:0;transform:translateY(16px) scale(.97)}}
@media(max-width:800px){.components{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:700px){.landing{padding-left:max(20px,env(safe-area-inset-left,0px));padding-right:max(20px,env(safe-area-inset-right,0px))}.landing h1{font-size:clamp(36px,10.5vw,46px)}.eyebrow{font-size:11px}.facts{margin-top:16px;gap:6px}.facts li{font-size:12px;padding:5px 10px}.landing-heading{margin:0 0 22px}.component{padding:14px}.component-top b{font-size:22px}.trend{padding:16px 12px 8px}.history-row{font-size:20px}}
@media(max-height:800px) and (min-width:701px){.landing h1{font-size:clamp(40px,4.6vw,56px)}.landing-heading{margin-bottom:22px}.facts{margin-top:14px}}
@media(prefers-reduced-motion:reduce){::view-transition-old(root),::view-transition-new(root){animation:none}.mode-choice{transform:none!important}}
/* accounts & pricing */
.identity-login{display:grid;gap:12px;justify-items:start}#google-button{min-height:44px;width:100%;max-width:320px}
.dev-login{display:flex;gap:10px;width:100%;max-width:420px}.dev-login input{flex:1;min-width:0;border:1px solid var(--line);border-radius:11px;padding:10px 12px;font:16px var(--font);background:var(--card);color:var(--ink)}
.trial-cta{display:grid;gap:12px;justify-items:center;max-width:420px;margin:18px auto 0;text-align:center}.trial-cta p{margin:0;color:var(--muted)}.trial-cta b{color:var(--ink)}
.identity-login small{font-size:12px;color:var(--muted)}
img.profile-avatar{object-fit:cover}
.button.small{min-height:40px;padding:8px 14px;font-size:14px;margin-left:auto}.identity-ready .button.small+.icon-button{margin-left:0}
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:10px}
.plan{display:flex;flex-direction:column;gap:14px;padding:26px;border:1px solid var(--line);border-radius:22px;background:var(--card)}
.plan.featured{border-color:var(--red);box-shadow:0 14px 40px color-mix(in srgb,var(--red) 14%,transparent)}
.plan h2{font:700 20px var(--display);margin:0}.price{font:800 38px var(--display);margin:0;color:var(--ink)}.price small{font:500 15px var(--font);color:var(--muted);margin-left:6px}
.plan ul{list-style:none;padding:0;margin:0;display:grid;gap:9px;flex:1;font-size:15px;color:var(--ink)}.plan li:before{content:'✓';color:var(--good);font-weight:700;margin-right:9px}.plan li.no{color:var(--muted)}.plan li.no:before{content:'–';color:var(--muted)}
.plan .button{width:100%}.plan-note{font-size:13px;color:var(--muted);margin:0}
.pay-note{font-size:13px;color:var(--muted);margin-top:22px;text-align:center}
.invite-form{display:grid;gap:12px;padding:22px;border:1px solid var(--line);border-radius:20px;background:var(--card);margin-bottom:18px}
.invite-form label{display:grid;gap:8px;font-weight:550;color:var(--ink)}.invite-form input{font:16px var(--font);border:1px solid var(--line);border-radius:12px;padding:12px;background:var(--paper);color:var(--ink)}
.leader-page .account-plan{margin-bottom:14px}.invite-title{font-size:16px;margin:0 0 10px}
.invite-row{display:flex;gap:10px}.invite-row input{flex:1;min-width:0}.invite-row .button{flex:none}
.leader-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:14px}
.leader-stats div{display:grid;gap:2px;padding:14px;border:1px solid var(--line);border-radius:16px;background:var(--card)}
.leader-stats b{font-size:26px;color:var(--ink)}.leader-stats small{font-size:12px;color:var(--muted)}
.agent-row{display:grid;gap:10px;padding:14px 16px;border:1px solid var(--line);border-radius:16px;background:var(--card);margin-bottom:10px}
.agent-head{display:flex;justify-content:space-between;align-items:flex-start;gap:10px}.agent-head span{display:grid;gap:2px;min-width:0;overflow-wrap:anywhere}
.agent-head small{font-size:12px;color:var(--muted)}.agent-head em{flex:none;font-style:normal;font-size:12px;font-weight:700;padding:4px 10px;border-radius:99px;background:var(--line);color:var(--muted)}
.agent-head em.pass{color:var(--teal)}.agent-head em.fail{color:var(--red)}
.agent-stats{display:flex;gap:18px;flex-wrap:wrap;font-size:13px;color:var(--muted)}.agent-stats b{color:var(--ink)}.agent-stats b.ok{color:var(--teal)}
@media (max-width:560px){.leader-stats{grid-template-columns:repeat(2,1fr)}.invite-row{flex-direction:column}}
.invite-actions{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;color:var(--muted);font-size:14px}.invite-form small{font-size:12px;color:var(--muted)}
.invite-list .history-row{font-size:17px}.invite-list .history-row small{display:block;font-size:12px;color:var(--muted)}
@media(max-width:760px){.plans{grid-template-columns:1fr}.price{font-size:32px}}

.legal-links{display:flex;justify-content:center;flex-wrap:wrap;gap:6px 18px;margin:26px 0 8px;font-size:13px}.legal-links a{color:var(--muted);text-decoration:none}.legal-links a:hover{color:var(--red);text-decoration:underline}.pay-note a{color:inherit}

.lang-switch{position:relative;display:grid;grid-template-columns:1fr 1fr;align-items:center;width:84px;height:38px;padding:3px;border:1px solid var(--line);border-radius:99px;background:color-mix(in srgb,var(--card) 70%,transparent);cursor:pointer;font:700 12px var(--font);letter-spacing:.04em}
.lang-switch span{position:relative;z-index:1;text-align:center;color:var(--muted);transition:color .25s}
.lang-switch span.on{color:#fff}
.lang-switch i{position:absolute;top:3px;bottom:3px;left:3px;width:calc(50% - 3px);border-radius:99px;background:var(--teal);box-shadow:0 2px 8px color-mix(in srgb,var(--teal) 35%,transparent);transition:transform .3s var(--spring,ease)}
.lang-switch[aria-checked=true] i{transform:translateX(100%)}
.lang-switch:focus-visible{outline:2px solid var(--teal);outline-offset:2px}
@media(max-width:520px){.lang-switch{width:72px;height:34px;font-size:11px}}
dialog.book-dialog{width:min(1000px,96vw);max-width:none;height:min(92vh,1100px);padding:14px 16px;display:flex;flex-direction:column}
dialog.book-dialog .dialog-heading h2{font-size:16px}
.book-frame{flex:1;width:100%;min-height:0;border:1px solid var(--line);border-radius:12px;background:#fff}
.book-note{font-size:12px;color:var(--muted);margin:8px 2px 0}.book-note a{color:var(--teal)}
@media(max-width:600px){dialog.book-dialog{width:100vw;height:100dvh;max-height:none;border-radius:0;margin:0;padding:10px}}

.plan-badge{display:inline-flex;align-items:center;height:30px;padding:0 12px;border-radius:99px;font:700 11px var(--font);letter-spacing:.08em;text-decoration:none;white-space:nowrap;border:1px solid transparent}
.plan-badge.free{color:var(--muted);background:color-mix(in srgb,var(--card) 70%,transparent);border-color:var(--line)}
.plan-badge.pass{color:#fff;background:var(--red)}
.plan-badge.leader{color:#fff;background:var(--teal)}
@media(max-width:520px){.plan-badge{height:26px;padding:0 8px;font-size:9.5px;letter-spacing:.04em}}
.brand span{white-space:nowrap}
@media(max-width:420px){.brand span{font-size:17px}.brand svg{width:28px;height:28px}.header-tools{gap:6px}.lang-switch{width:64px;height:32px}.header-tools .icon-button{width:36px;height:36px}}
@media(max-width:360px){.brand span b{display:none}}

.account-button{display:inline-flex;align-items:center;gap:6px;padding:3px 4px 3px 3px;border:1px solid var(--line);border-radius:99px;background:color-mix(in srgb,var(--card) 70%,transparent);cursor:pointer}
.account-button .profile-avatar{width:30px;height:30px;border-radius:50%;font-size:13px;display:grid;place-items:center;object-fit:cover}
.account-button .plan-badge{height:26px;padding:0 10px;font-size:10px}
.account-button:focus-visible{outline:2px solid var(--teal);outline-offset:2px}
.account-panel{display:grid;gap:16px;min-width:min(340px,80vw)}
.account-head{display:flex;align-items:center;gap:14px}.account-head .profile-avatar{width:52px;height:52px;border-radius:50%;object-fit:cover;display:grid;place-items:center;font-size:20px}
.account-head span{display:grid;min-width:0}.account-head b{font-size:19px;overflow-wrap:anywhere}.account-head small{color:var(--muted);font-size:13px;overflow-wrap:anywhere}
.account-plan{display:grid;gap:2px;padding:12px 14px;border-radius:14px;border:1px solid var(--line)}
.account-plan span{font:700 12px var(--font);letter-spacing:.08em}.account-plan small{color:var(--muted);font-size:13px}
.account-plan.pass span{color:var(--red)}.account-plan.leader span{color:var(--teal)}
.logout-button{width:100%;justify-content:center}
@media(max-width:420px){.account-button .plan-badge{padding:0 7px;font-size:9px}.account-button .profile-avatar{width:26px;height:26px}}
@media(max-width:330px){.account-button .plan-badge{display:none}}
.lang-switch{display:none}
.lang-toggle{display:inline-flex;align-items:center;gap:7px;font:700 12px var(--font);letter-spacing:.04em;user-select:none}
.lang-toggle>b{color:var(--muted);font-weight:600;transition:color .25s}.lang-toggle>b.on{color:var(--teal);font-weight:800}
.lang-knob-track{position:relative;width:46px;height:26px;padding:0;border-radius:99px;border:1px solid var(--line);background:color-mix(in srgb,var(--teal) 22%,var(--card));cursor:grab;touch-action:none;transition:background .25s}
.lang-knob-track[aria-checked=true]{background:color-mix(in srgb,var(--teal) 55%,var(--card))}
.lang-knob-track i{position:absolute;top:2px;left:2px;width:20px;height:20px;border-radius:50%;background:#fff;box-shadow:0 2px 6px #0003;transition:transform .28s var(--spring,ease)}
.lang-knob-track[aria-checked=true] i{transform:translateX(20px)}
.lang-knob-track:active{cursor:grabbing}.lang-knob-track:focus-visible{outline:2px solid var(--teal);outline-offset:2px}
@media(max-width:420px){.lang-toggle{gap:4px;font-size:10.5px}.lang-knob-track{width:38px;height:22px}.lang-knob-track i{width:16px;height:16px}.lang-knob-track[aria-checked=true] i{transform:translateX(16px)}}

.note-chapter{margin-bottom:8px}.note-chapter .source-ref{width:100%;justify-content:flex-start;text-align:left}.notes-page #google-button{margin:0 auto 18px}
.note-panel{overflow:hidden;height:0;margin-top:10px;border:1px solid var(--line);border-radius:16px;background:var(--card);transition:height .32s var(--ease-out,ease),opacity .32s;opacity:0;max-width:100%}
.note-panel.shown{opacity:1;overflow:auto;max-height:min(70vh,640px);overscroll-behavior:contain;-webkit-overflow-scrolling:touch}
.note-head{position:sticky;top:0;z-index:1;display:grid;gap:2px;padding:12px 16px;background:var(--card);border-bottom:1px solid var(--line)}
.note-head span{display:flex;align-items:center;gap:8px;font-weight:700;font-size:15px;color:var(--ink)}.note-head small{font-size:12px;color:var(--muted)}
.note-page{padding:10px 16px 6px;border-bottom:1px solid var(--line)}.note-page:last-child{border-bottom:0}
.note-page h3{display:flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin:4px 0 8px}
.note-page h3 em{font-style:normal;text-transform:none;letter-spacing:0;font-size:11px;font-weight:700;color:#7a5a00;background:#ffe58a;padding:2px 8px;border-radius:99px}
.note-page ul{margin:0 0 8px;padding-left:20px}.note-page li{margin:6px 0;font-size:15px;line-height:1.55;color:var(--ink);overflow-wrap:anywhere}
.note-page dl{margin:0 0 8px;display:grid;gap:8px}.note-page dl>div{padding:8px 10px;border-radius:10px;background:var(--soft)}.note-page dt{font-weight:700;font-size:14px}.note-page dd{margin:2px 0 0;font-size:14px;line-height:1.5;color:var(--ink);overflow-wrap:anywhere}
.note-set{margin:6px 0 10px;padding:8px 10px;border-radius:10px;border:1px dashed var(--line)}.note-set b{font-size:14px}.note-set ul{margin-top:4px}
.note-hit,.note-set[data-hit]{background:#fff3b0 !important;color:#2b2400;border-radius:8px;box-shadow:0 0 0 3px #fff3b0}
.note-page li.note-hit{list-style-position:inside;margin-left:-14px;padding:4px 6px}
[data-theme=dark] .note-hit,[data-theme=dark] .note-set[data-hit]{background:#5c4b00 !important;color:#fff4c2;box-shadow:0 0 0 3px #5c4b00}
[data-theme=dark] .note-page h3 em{background:#5c4b00;color:#fff4c2}
.note-hit.pulse,.note-set.pulse{animation:note-pulse 1.4s ease-out 2}
@keyframes note-pulse{0%{box-shadow:0 0 0 3px #ffd84a}60%{box-shadow:0 0 0 9px #ffd84a00}100%{box-shadow:0 0 0 3px #fff3b0}}
.note-loading{padding:16px;margin:0;color:var(--muted);font-size:14px}
.source-ref[aria-expanded=true]{background:color-mix(in srgb,var(--teal) 14%,transparent)}
@media(prefers-reduced-motion:reduce){.note-panel{transition:none}.note-hit.pulse{animation:none}}
.menu-links .menu-theme{display:none}
.site-header{gap:10px}.brand{min-width:0;flex-shrink:1}.header-tools{flex-shrink:0;min-width:0}
@media(max-width:600px){.theme-toggle{display:none}.menu-links .menu-theme{display:flex}}
@media(max-width:480px){.lang-toggle>b{display:none}.lang-knob-track::before,.lang-knob-track::after{position:absolute;top:50%;transform:translateY(-50%);font:800 8.5px var(--font);color:#fff;pointer-events:none}.lang-knob-track::before{content:'EN';right:5px;opacity:.85}.lang-knob-track::after{content:'BM';left:5px;opacity:.85}.lang-knob-track{width:48px;height:26px}.lang-knob-track i{width:20px;height:20px;z-index:1}.lang-knob-track[aria-checked=true] i{transform:translateX(22px)}
 .account-button .plan-badge{padding:0 8px;font-size:9.5px;letter-spacing:.03em}}
@media(max-width:380px){.brand span b{display:none}}