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var(--border);background:var(--card);padding:1rem;text-align:left;cursor:pointer}.pack-row.popular{border-color:var(--primary);background:color-mix(in oklch,var(--primary) 6%,transparent)}.btn-primary,.btn.btn-primary{background:var(--primary)!important;color:var(--primary-foreground)!important;border-color:var(--primary)!important}.btn-secondary{background:var(--secondary)!important;color:var(--secondary-foreground, var(--violet-deep))!important}.field:focus,.field:focus-visible{border-color:var(--primary)!important;outline-color:var(--primary)}.bottom-nav{display:none!important}.error{color:var(--destructive)}.wallet-pill{background:color-mix(in oklch,var(--lime) 25%,transparent)!important;color:var(--lime-foreground)!important}.bienvenue-page{position:relative;min-height:100dvh;overflow:hidden;color:var(--primary-foreground);background:var(--gradient-hero)}.bienvenue-halo{pointer-events:none;position:absolute;border-radius:9999px;filter:blur(48px)}.bienvenue-halo-tr{right:-6rem;top:-7rem;width:20rem;height:20rem;background:#ffffff1a}.bienvenue-halo-bl{left:-4rem;bottom:-6rem;width:18rem;height:18rem;background:color-mix(in oklch,var(--lime) 25%,transparent)}.bienvenue-symbols{pointer-events:none;position:absolute;top:0;right:0;bottom:0;left:0;-webkit-user-select:none;user-select:none}.bienvenue-sym{position:absolute;font-family:var(--font-display);color:#ffffff26}.bienvenue-sym.s1{left:2rem;top:6rem;font-size:2.25rem}.bienvenue-sym.s2{right:2.5rem;top:10rem;font-size:1.875rem}.bienvenue-sym.s3{left:2.5rem;bottom:13rem;font-size:1.875rem}.bienvenue-sym.s4{right:2rem;bottom:18rem;font-size:3rem;color:#ffffff1a}.bienvenue-inner{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;width:100%;max-width:28rem;margin:0 auto;min-height:100dvh;padding:calc(env(safe-area-inset-top,0px) + 3rem) 1.5rem calc(env(safe-area-inset-bottom,0px) + 2rem);text-align:center;box-sizing:border-box}@media(min-width:640px){.bienvenue-inner{max-width:32rem}}.bienvenue-hero-illu{position:relative;display:grid;place-items:center;margin-bottom:2rem}.bienvenue-ring{position:absolute;width:11rem;height:11rem;border-radius:9999px;border:2px solid transparent;box-sizing:border-box}.bienvenue-ring.ring-lime{border-color:color-mix(in oklch,var(--lime) 60%,transparent)}.bienvenue-ring.ring-white{border-color:#fff6}.bienvenue-camera-wrap{position:relative;display:grid;place-items:center;width:9rem;height:9rem;border-radius:2rem;background:#ffffff26;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);overflow:hidden}.bienvenue-scan{position:absolute;left:1rem;right:1rem;height:2.5rem;border-radius:9999px;background:linear-gradient(to bottom,transparent,color-mix(in oklch,var(--lime) 50%,transparent),transparent)}.bienvenue-spark{position:absolute;right:-1.5rem;bottom:-.75rem;display:grid;place-items:center;width:3rem;height:3rem;border-radius:1rem;background:var(--lime);color:var(--lime-foreground);box-shadow:0 10px 24px #0000002e}.bienvenue-pill{display:inline-flex;align-items:center;gap:.5rem;margin:0;padding:.375rem 1rem;border-radius:9999px;background:#ffffff1f;color:var(--lime);font-size:.75rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase}.bienvenue-title{margin:1rem 0 0;font-family:var(--font-display);font-size:2.25rem;font-weight:800;line-height:1.15;letter-spacing:-.03em}.bienvenue-lead{margin:.75rem 0 0;max-width:20rem;font-size:15px;line-height:1.6;color:#ffffffd9}.bienvenue-atouts{list-style:none;margin:2rem 0 0;padding:0;width:100%;display:flex;flex-direction:column;gap:.75rem;text-align:left}.bienvenue-atout{display:flex;align-items:center;gap:1rem;padding:1rem;border-radius:1rem;background:#ffffff1a;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.bienvenue-atout-icon{display:grid;place-items:center;flex-shrink:0;width:2.75rem;height:2.75rem;border-radius:.75rem;background:color-mix(in oklch,var(--lime) 20%,transparent);color:var(--lime)}.bienvenue-atout-text{min-width:0;display:flex;flex-direction:column;gap:.125rem}.bienvenue-atout-text .titre{font-family:var(--font-display);font-size:15px;font-weight:700}.bienvenue-atout-text .texte{font-size:12px;color:#ffffffbf;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.bienvenue-cta{margin-top:2rem;display:inline-flex;align-items:center;justify-content:center;gap:.5rem;width:100%;min-height:56px;padding:0 1.5rem;border:none;border-radius:1rem;background:var(--lime);color:var(--lime-foreground);font-family:var(--font-display);font-size:1rem;font-weight:800;box-shadow:0 10px 28px #0003;cursor:pointer;transition:transform .15s ease}.bienvenue-cta:active{transform:scale(.95)}.sr-only,.file-input-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);clip-path:inset(50%);white-space:nowrap;border:0}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:13px;padding:14px 20px;font-size:14px;font-weight:700;border:1px solid transparent;background:none;cursor:pointer;transition:background .15s ease,transform .15s ease,border-color .15s ease}.btn:hover{transform:translateY(-1px)}.btn:disabled{opacity:.6;cursor:not-allowed;transform:none}.btn-primary{background:var(--primary);color:var(--primary-foreground);box-shadow:0 12px 28px #9137e747}.btn-primary:hover{background:var(--violet-deep)}.btn-secondary{background:var(--surface);color:var(--ink);border-color:var(--line)}.btn-secondary:hover{border-color:var(--teal);color:var(--teal)}.btn-danger{background:#fff;color:var(--danger);border:1px solid #fecaca}.btn-danger:hover{background:#fef2f2;border-color:#fca5a5;color:var(--danger)}.btn-danger-solid{background:var(--danger);color:#fff;border:1px solid transparent}.btn-danger-solid:hover:not(:disabled){background:#b91c1c}.btn-danger-solid:disabled{opacity:.45;cursor:not-allowed}.btn-ink{background:var(--ink);color:#fff}.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}.btn-ghost:hover{background:var(--secondary)}.btn-sm{padding:10px 14px;font-size:13px;border-radius:10px}.btn-full{width:100%}.field-wrap{display:block;margin-bottom:14px}.field-wrap-label{margin-bottom:6px;font-size:13px;font-weight:700;color:var(--ink)}.field-wrap-label .sci-markdown 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12%,var(--secondary))}.field-control-accent .field{padding-right:48px;font-weight:600}.field{width:100%;border-radius:12px;border:1px solid var(--line);background:#fbfdfd;padding:13px 14px;font-size:15px;color:var(--ink);font-family:inherit;outline:none;resize:vertical;transition:border-color .15s ease,box-shadow .15s ease;-webkit-appearance:none;-moz-appearance:none;appearance:none}.field:focus{border-color:var(--primary);box-shadow:0 0 0 3px color-mix(in oklch,var(--primary) 18%,transparent);background:#fff}.field-otp{text-align:center;letter-spacing:.35em;font-size:1.4rem;font-weight:700;font-family:var(--font-display-stack)}.auth-form{margin-top:.75rem;display:grid;gap:4px}.form-section{margin-bottom:8px;padding-top:8px;border-top:1px solid var(--line)}.form-section:first-of-type{border-top:0;padding-top:0}.form-section-title{margin:0 0 12px;font-size:12px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:var(--muted-foreground)}.error{color:var(--destructive);font-size:14px;margin:0 0 12px;padding:10px 12px;border-radius:10px;background:color-mix(in oklch,var(--destructive) 8%,white)}.muted-link{margin-top:20px;text-align:center;font-size:14px;color:var(--muted-foreground)}.muted-link a{color:var(--primary);font-weight:700}.text-back{display:inline-block;margin-top:14px;padding:0;border:0;background:none;color:var(--muted-foreground);font-size:13px;font-weight:700;cursor:pointer}.text-back:hover{color:var(--primary)}.stack{display:grid;gap:12px;margin-top:24px}.card{display:block;width:100%;text-align:left;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow);font-family:inherit;color:inherit;cursor:pointer}.card-title{margin:0;font-weight:700;font-family:var(--font-display-stack)}.card-meta{margin:6px 0 0;font-size:12px;color:var(--muted-foreground)}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:12px}.muted{color:var(--muted-foreground)}.row-between{display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%}.row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}@media(max-width:560px){.grid-2{grid-template-columns:1fr}}.shell{width:min(1120px,calc(100% - 32px));margin-inline:auto}.nav-wrap{position:sticky;top:0;z-index:40;background:#ffffffe6;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid rgba(220,231,232,.9)}.nav{height:64px;display:flex;align-items:center;justify-content:space-between;gap:16px}.brand{display:flex;align-items:center;gap:10px}.brand-mark.coroto-logo{background:none;transform:none;border-radius:50%}.brand-text{font-family:var(--font-display);font-size:14px;font-weight:700;letter-spacing:.02em;text-transform:uppercase}.brand-text strong{color:var(--primary);font-weight:800}.nav-back{font-size:13px;font-weight:700;color:var(--muted)}.nav-back:hover{color:var(--teal)}.auth-page{min-height:calc(100vh - 64px);display:flex;align-items:flex-start;justify-content:center;padding:28px 16px 64px}.auth-card{width:min(100%,460px)}.auth-panel{background:#ffffffeb;border:1px solid var(--line);border-radius:22px;padding:28px 22px;box-shadow:var(--shadow)}.auth-card h1,.page-title{margin:12px 0 0;font-family:var(--font-display-stack);font-size:clamp(1.6rem,4vw,1.9rem);font-weight:800;letter-spacing:-.04em;line-height:1.15;color:var(--navy)}.lead{margin:10px 0 0;color:var(--muted-foreground);font-size:15px;line-height:1.6}.eyebrow{display:inline-flex;align-items:center;gap:8px;margin:0;color:var(--teal);font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:.1em}.eyebrow:before{content:"";width:18px;height:3px;background:var(--lime);border-radius:3px}.dev-hint{margin:12px 0 0;padding:10px 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16px}.app-frame{width:100%;min-height:100dvh}.app-shell{width:100%;margin-inline:auto;min-height:100vh;background:transparent}.app-shell.student-shell{padding-bottom:0}@media(max-width:900px){.app-shell{width:min(28rem,100%)}}@media(min-width:901px){.app-shell{width:100%;max-width:none;border-inline:none;background:transparent;box-shadow:none}}.app-header{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 20px;background:#fffffff2;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.app-main{padding:0}.wallet-pill{border-radius:999px;background:var(--accent-soft);color:#8d6900;padding:8px 12px;font-size:14px;font-weight:700}.section-title{margin:40px 0 0;font-size:1.25rem;letter-spacing:-.03em;font-family:var(--font-display-stack);color:var(--navy)}.back-link{display:inline-block;font-size:14px;color:var(--muted);font-weight:600}.back-link:hover{color:var(--teal)}.accent-text{color:#8d6900;font-weight:700}.pre-wrap{white-space:pre-wrap;font-family:inherit;margin:12px 0 0;font-size:14px}.loading{padding:32px 20px;color:var(--muted-foreground)}.break-all{word-break:break-all}@media(max-width:560px){.auth-panel{padding:22px 16px;border-radius:18px}.role-card{padding:16px 14px}}.student-shell,.student-shell-home{padding-bottom:0}.app-loading{display:flex;align-items:center;justify-content:center;gap:10px;min-height:60vh;color:var(--muted);font-weight:600}.app-loading-dot{width:10px;height:10px;border-radius:50%;background:var(--teal);animation:pulse-dot 1s ease-in-out infinite}@keyframes pulse-dot{0%,to{opacity:.35;transform:scale(.85)}50%{opacity:1;transform:scale(1)}}.app-header-left{min-width:0}.app-header-compact{padding:12px 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6px;margin:0;border:0;border-radius:999px;background:var(--mint);color:var(--teal);font:inherit;font-size:13px;font-weight:700;cursor:pointer;-webkit-tap-highlight-color:transparent}.header-back:active{transform:scale(.97)}.header-back-inline{background:#fff;border:1px solid var(--line);color:var(--navy)}.header-brand{display:grid;place-items:center;width:40px;height:40px}.brand-mark-sm{width:34px;height:34px;display:grid;place-items:center;background:var(--navy);color:#fff;border-radius:11px;font-family:var(--font-display-stack);font-weight:800;font-size:15px}.wallet-pill-compact{display:inline-flex;align-items:center;gap:4px;padding:8px 11px;font-size:12px}.app-header-right{display:flex;align-items:center;gap:8px}.header-page-title{margin-top:4px}.profile-chip{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:50%;background:linear-gradient(145deg,var(--navy),#1a4a66);color:#fff;box-shadow:0 8px 20px #102f442e;border:2px solid #fff;flex-shrink:0}.profile-chip-avatar{font-family:var(--font-display-stack);font-weight:800;font-size:15px;line-height:1}.wallet-pill{display:inline-flex;align-items:center;gap:4px;padding:8px 12px;border-radius:999px;background:var(--accent-soft);color:#7a5a00;font-size:12px;font-weight:800;border:1px solid #f0dfa0}.back-link-btn{display:inline-flex;align-items:center;padding:8px 12px;border-radius:999px;background:#fff;border:1px solid var(--line)}.bottom-nav{position:fixed;left:50%;bottom:0;transform:translate(-50%);width:min(28rem,100%);display:grid;grid-template-columns:repeat(5,1fr);gap:4px;padding:10px 10px calc(10px + env(safe-area-inset-bottom));background:#fffffff7;border-top:1px solid var(--line);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);z-index:30;box-shadow:0 -8px 30px #102f440f}.bn-item{display:flex;flex-direction:column;align-items:center;gap:4px;text-align:center;font-size:10px;font-weight:700;color:var(--muted);padding:6px 2px;border-radius:14px}.bn-icon{display:grid;place-items:center;width:38px;height:38px;border-radius:13px;color:var(--muted)}.bn-item.on .bn-icon{background:var(--mint);color:var(--teal)}@media(max-width:380px){.header-back-label{display:none}.header-back{padding:0;width:40px;justify-content:center}}@media(min-width:901px){.bottom-nav{width:min(32rem,100%);max-width:520px}html.site-desktop .student-shell{flex-direction:row;align-items:stretch;max-width:none;width:100%;padding-bottom:0;min-height:100vh}html.site-desktop .student-shell-home{padding-bottom:0}html.site-desktop .app-header-bar{padding-inline:0;border-radius:16px;margin-bottom:8px;border:1px solid var(--line)}.bn-icon{width:42px;height:42px}.bn-label{font-size:11px}.home-hero{border-radius:28px}html.site-desktop .home-screen{padding:0}html.site-desktop .home-hero{border-radius:28px;padding:32px 40px 40px}html.site-desktop .home-hero-inner{max-width:100%}html.site-desktop .home-pillars{padding:32px 0 16px}html.site-desktop .home-pillar-grid{grid-template-columns:repeat(4,1fr);gap:16px}html.site-desktop .home-pillar-grid .pillar-card-rich{grid-template-columns:1fr;justify-items:center;text-align:center;padding:24px 16px;border-radius:24px;border-left:none!important;min-height:160px;gap:12px}html.site-desktop .home-pillar-grid .pillar-icon{margin:0 auto}html.site-desktop .home-pillar-grid .row-chevron{display:none}html.site-desktop .home-title{font-size:2.4rem}html.site-desktop .home-motivation{font-size:17px;max-width:48ch}}.home-screen{min-height:100%}.home-hero{position:relative;padding:calc(16px + env(safe-area-inset-top,0px)) 20px 36px;color:#fff;overflow:hidden;border-radius:0 0 32px 32px}.home-hero-inner{position:relative;z-index:1}.home-hero-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.home-icon-btn{display:grid;place-items:center;width:40px;height:40px;border-radius:50%;background:#ffffff24;border:1px solid rgba(255,255,255,.25);color:#fff}.header-settings-btn{background:var(--mint);border:1px solid #cfe9e4;color:var(--teal);flex-shrink:0}.header-settings-btn:active{transform:scale(.97)}.home-wallet{display:inline-flex;align-items:center;gap:6px;padding:10px 14px;border-radius:999px;background:#ffffff29;border:1px solid rgba(255,255,255,.28);color:#fff;font-size:13px;font-weight:800;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.home-motivation{margin:10px 0 0;font-size:15px;line-height:1.55;font-weight:500;opacity:.95;max-width:34ch}.home-hero-bg{position:absolute;top:0;right:0;bottom:0;left:0;background:radial-gradient(circle at 85% 15%,rgba(201,243,107,.35),transparent 45%),radial-gradient(circle at 10% 90%,rgba(255,212,90,.2),transparent 40%),linear-gradient(145deg,var(--violet-deep) 0%,var(--primary) 100%)}.home-hero-content{position:relative;z-index:1}.home-eyebrow{margin:0 0 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#00000014}.grade-badge-icon{display:grid;place-items:center;width:32px;height:32px;border-radius:50%;background:#fffffff2;color:var(--teal);flex-shrink:0}.grade-badge-body{display:grid;gap:1px;line-height:1.2}.grade-badge-level{font-family:var(--font-display-stack);font-size:15px;font-weight:800;letter-spacing:-.02em}.grade-badge-series{font-size:11px;font-weight:600;opacity:.88;letter-spacing:.02em;text-transform:uppercase}.home-pillars{padding:24px 16px 32px}.home-section-label{margin:0 0 14px;font-size:13px;font-weight:700;color:var(--muted);letter-spacing:.04em;text-transform:uppercase}.home-pillar-grid{margin-top:0}@media(max-width:900px){html.pwa-mobile .home-pillar-grid,.home-pillar-grid{grid-template-columns:repeat(2,1fr);gap:12px}html.pwa-mobile .home-pillar-grid .pillar-card-rich,.home-pillar-grid .pillar-card-rich{grid-template-columns:1fr;grid-template-rows:auto auto;justify-items:center;text-align:center;padding:18px 12px 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.sci-markdown{font-size:15px;line-height:1.75;color:var(--ink)}.correction-step-body .sci-markdown .katex{font-size:1.05em}.correction-step-body .sci-markdown .katex-display{margin:.75em 0;padding:.75rem 1rem;border-radius:12px;background:color-mix(in oklch,var(--primary) 6%,white);overflow-x:auto}.correction-step-concept{display:inline-block;margin-bottom:8px;padding:3px 10px;border-radius:999px;font-size:11px;font-weight:700;letter-spacing:.03em;text-transform:uppercase;background:color-mix(in oklch,var(--primary) 10%,transparent);color:var(--primary)}.correction-method .sci-markdown,.correction-answer .sci-markdown{font-size:15px;line-height:1.75}.correction-answer .sci-markdown .katex-display{margin:.5em 0;padding:.5rem .75rem;border-radius:10px;background:color-mix(in oklch,var(--lime) 15%,white);overflow-x:auto}.correction-mistake{margin-top:16px;padding:12px 14px;border-radius:12px;background:#00000008}.correction-mistake-label{margin:0 0 6px;font-weight:700;font-size:13px;text-transform:uppercase;letter-spacing:.03em;color:var(--muted)}.correction-mistake .sci-markdown{font-size:14px;line-height:1.65}.correction-reasoning h4{margin:0 0 10px;line-height:1.45}.correction-key-points{margin:12px 0 0;padding-left:1.2em}.correction-key-points li{margin-bottom:.65em}.correction-key-points li:last-child{margin-bottom:0}.correction-question-footer{margin-top:20px;display:flex;flex-direction:column;gap:14px}.btn-sensei{margin-top:8px;background:none;border:none;color:var(--teal);font-weight:700;font-size:14px;padding:0;cursor:pointer}.btn-sensei:before{content:"✨ "}.sensei-accent{border-left:3px solid var(--teal);margin-top:10px;animation:senseiSlide .25s ease}@keyframes senseiSlide{0%{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}.sensei-label{font-weight:700;color:var(--teal);margin-bottom:6px}.step-key-point{margin-top:10px;padding-top:10px;border-top:1px solid 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