:root{--blue:#215e99;--blue-mid:#2980c4;--accent:#a6c9eb;--accent-dim:#d0e6f7;--bg:#d9e7fd;--surface:#ffffff;--surface-2:#eef5fd;--border:rgba(33, 94, 153, 0.14);--border-str:rgba(33, 94, 153, 0.3);--text:#1a1a2e;--text-muted:#6b7a99;--text-dim:#8fb3d0;--green:#16a34a;--green-bg:#dcfce7;--red:#dc2626;--red-bg:#fee2e2;--amber:#d97706;--amber-bg:#fef3c7;--radius:14px;--radius-sm:8px;--sans:"Inter",system-ui,-apple-system,sans-serif;--serif:"Inter",system-ui,sans-serif;--mono:"Inter",system-ui,sans-serif;--header-h:52px}*,::after,::before{box-sizing:border-box;margin:0;padding:0}button,input,select,textarea{font-size:inherit;font-family:inherit}html{font-size:16px;-webkit-text-size-adjust:100%}body{-webkit-text-size-adjust:100%;text-size-adjust:100%;font-family:var(--sans);background:var(--bg);background-image:radial-gradient(ellipse 120% 50% at 50% -5%,rgba(33,94,153,.1) 0,transparent 60%),radial-gradient(ellipse 60% 40% at 90% 95%,rgba(166,201,235,.45) 0,transparent 55%);min-height:100dvh;color:var(--text);line-height:1.5}#app{min-height:100dvh;display:flex;flex-direction:column}:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:var(--radius-sm)}.app-header{position:fixed;top:0;left:0;right:0;height:var(--header-h);z-index:200;display:flex;align-items:center;padding:0 20px;background:rgba(217,231,253,.8);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}.app-header-logo{display:block;height:30px;width:auto}.app-header-wordmark{display:none}body:has(#screen-welcome.active) .app-header{display:none}.screen{display:none;flex-direction:column;min-height:100dvh}.screen.active{display:flex;animation:screenIn .4s cubic-bezier(.22,1,.36,1) both}.screen.active:not(#screen-welcome){padding-top:var(--header-h)}@keyframes screenIn{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}#screen-welcome{align-items:center;justify-content:center;padding:48px 20px 64px}.welcome-container{display:flex;flex-direction:column;align-items:center;gap:28px;max-width:520px;width:100%;text-align:center}.logo{display:flex;align-items:center;justify-content:center}.logo-img{display:block;height:56px;width:auto}.logo-mark{display:none}.logo-wordmark{display:none}.title{font-family:var(--serif);font-size:clamp(22px, 5vw, 30px);font-weight:700;color:var(--text);line-height:1.25}.welcome-body{font-size:15px;color:var(--text-muted);line-height:1.75;max-width:400px}.stage-overview{display:grid;grid-template-columns:1fr 1fr;gap:12px;width:100%}.stage-overview-row{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px;text-align:left;display:flex;flex-direction:column;gap:5px;box-shadow:0 2px 10px rgba(33,94,153,.07)}.stage-pill{display:inline-flex;align-items:center;font-size:10px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;padding:3px 10px;border-radius:999px;font-family:var(--mono);color:#030d1c;width:fit-content;margin-bottom:4px}.stage-pill-1{background:var(--blue);color:#fff}.stage-pill-2{background:var(--green);color:#fff}.stage-overview-label{font-size:13px;font-weight:600;color:var(--text)}.stage-overview-detail{font-size:12px;color:var(--text-muted)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:none;border-radius:var(--radius-sm);font-family:var(--sans);font-size:15px;font-weight:700;cursor:pointer;padding:13px 28px;transition:transform .15s,box-shadow .15s,background .15s,opacity .15s;text-decoration:none;letter-spacing:-.01em}.btn:active{transform:scale(.97)}.btn:disabled{opacity:.32;cursor:not-allowed;transform:none!important}.btn-primary{background:var(--blue);color:#fff;box-shadow:0 4px 16px rgba(33,94,153,.28)}@media (hover:hover){.btn-primary:not(:disabled):hover{transform:translateY(-2px);box-shadow:0 8px 28px rgba(33,94,153,.38)}}.btn-large{padding:16px 40px;font-size:17px;border-radius:var(--radius);width:100%;max-width:320px}.btn-outline{background:0 0;color:var(--text-muted);border:1px solid var(--border-str)}@media (hover:hover){.btn-outline:not(:disabled):hover{border-color:var(--blue);color:var(--blue);background:var(--accent-dim)}}#screen-question{padding:0}.question-body{flex:1;display:flex;align-items:flex-start;justify-content:center;padding:24px 16px 48px}.question-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);width:100%;max-width:600px;box-shadow:0 4px 24px rgba(33,94,153,.1);font-size:15px}.card-progress-track{width:100%;height:4px;background:var(--accent-dim);border-radius:var(--radius) var(--radius) 0 0;overflow:hidden}.card-progress-bar{height:100%;background:linear-gradient(90deg,var(--blue) 0,var(--blue-mid) 100%);border-radius:0 2px 2px 0;transition:width .6s cubic-bezier(.22, 1, .36, 1);box-shadow:0 0 8px rgba(33,94,153,.3)}.card-meta{display:flex;justify-content:space-between;align-items:center;padding:14px 20px 0;font-size:11px;font-family:var(--mono);color:var(--text-dim);letter-spacing:.04em}#live-score{color:var(--blue);font-weight:700}.category-badge{display:block;width:fit-content;background:linear-gradient(135deg,rgba(33,94,153,.08) 0,rgba(166,201,235,.22) 100%);color:var(--blue);border:1px solid rgba(33,94,153,.2);font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.1em;padding:4px 10px;border-radius:999px;margin:14px 20px 10px;font-family:var(--mono)}.assignment{font-size:15px;color:var(--text-muted);padding:0 20px;margin-bottom:18px;line-height:1.55}.question-content{padding:0 20px;margin-bottom:20px}.answer-area{padding:0 20px 24px}#weiter-btn{margin-top:12px}.q-word{font-family:var(--serif);font-size:clamp(42px, 9vw, 60px);font-weight:700;color:var(--text);text-align:center;padding:20px 0 10px;line-height:1.1}.q-text{font-size:15px;font-weight:500;color:var(--text);line-height:1.65;background:var(--surface-2);border-left:3px solid var(--blue);border-radius:0 var(--radius-sm) var(--radius-sm) 0;padding:14px 16px}.article-btns{display:grid;grid-template-columns:1fr 1fr;gap:12px}.article-btns-vertical{grid-template-columns:1fr}.article-btns-vertical .article-btn{text-align:left;font-size:15px;font-weight:500;padding:14px 16px;line-height:1.5}.article-btn{padding:14px 12px;font-family:var(--serif);font-size:15px;font-weight:500;border:1.5px solid var(--border);background:var(--surface-2);color:var(--text);border-radius:var(--radius);cursor:pointer;transition:transform .15s,box-shadow .15s,background .15s,color .15s,border-color .15s}@media (hover:hover){.article-btn:not(:disabled):hover{transform:translateY(-3px);border-color:var(--blue);background:var(--accent-dim);color:var(--blue);box-shadow:0 8px 20px rgba(33,94,153,.16)}}.article-btn.answer-selected{border-color:var(--blue);background:var(--blue);color:#fff}.article-btn:disabled:not(.answer-selected){opacity:.28;cursor:not-allowed}.fill-area{display:flex;flex-direction:column;gap:10px}.fill-input-row{display:flex;align-items:center;gap:6px;flex-wrap:wrap}.fill-prefill{font-family:var(--sans);font-size:15px;font-weight:600;color:var(--text);white-space:nowrap;flex-shrink:0}.fill-input-row .form-control{flex:1;min-width:160px;width:auto}.form-control{width:100%;font-family:var(--sans);font-size:15px;font-weight:500;color:var(--text);background:var(--surface-2);border:1.5px solid var(--border);border-radius:var(--radius-sm);padding:13px 16px;transition:border-color .2s,box-shadow .2s,background .2s;outline:0;resize:vertical}.form-control::placeholder{color:var(--text-dim)}.form-control:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(33,94,153,.12);background:#fff}.form-control:disabled{opacity:.55;cursor:not-allowed}.audio-player{display:flex;align-items:center;gap:16px;background:var(--accent-dim);border-radius:var(--radius);padding:16px 20px;border:1px solid var(--border)}.play-btn{width:52px;height:52px;border-radius:50%;background:linear-gradient(135deg,var(--blue) 0,var(--blue-mid) 100%);border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;color:#fff;flex-shrink:0;transition:transform .15s,box-shadow .15s;box-shadow:0 4px 14px rgba(33,94,153,.32)}@media (hover:hover){.play-btn:hover{transform:scale(1.1);box-shadow:0 6px 22px rgba(33,94,153,.44)}}.play-btn:active{transform:scale(.95)}.pause-icon,.replay-icon{display:none}.audio-player.playing .play-icon{display:none}.audio-player.playing .pause-icon{display:block}.audio-player.ended .pause-icon,.audio-player.ended .play-icon{display:none}.audio-player.ended .replay-icon{display:block}.audio-time{font-family:var(--mono);font-size:12px;color:var(--text-muted);white-space:nowrap;min-width:72px;text-align:right}.waveform{display:flex;align-items:center;gap:4px;height:36px;flex:1}.waveform span{display:block;width:3px;background:var(--blue);border-radius:999px;opacity:.5}.waveform span:first-child{height:10px}.waveform span:nth-child(2){height:20px}.waveform span:nth-child(3){height:13px}.waveform span:nth-child(4){height:26px}.waveform span:nth-child(5){height:16px}.waveform span:nth-child(6){height:22px}.waveform span:nth-child(7){height:11px}.waveform span:nth-child(8){height:18px}.audio-player.playing .waveform span{opacity:.85;animation:wave .9s ease-in-out infinite}.audio-player.playing .waveform span:first-child{animation-delay:0s}.audio-player.playing .waveform span:nth-child(2){animation-delay:.12s}.audio-player.playing .waveform span:nth-child(3){animation-delay:.22s}.audio-player.playing .waveform span:nth-child(4){animation-delay:60ms}.audio-player.playing .waveform span:nth-child(5){animation-delay:.18s}.audio-player.playing .waveform span:nth-child(6){animation-delay:30ms}.audio-player.playing .waveform span:nth-child(7){animation-delay:.28s}.audio-player.playing .waveform span:nth-child(8){animation-delay:.14s}@keyframes wave{0%,100%{height:5px}50%{height:28px}}.free-area{display:flex;flex-direction:column;gap:10px}.self-eval-hint{font-size:13px;color:var(--amber);background:var(--amber-bg);border:1px solid rgba(251,191,36,.2);border-radius:var(--radius-sm);padding:10px 14px;font-weight:500;line-height:1.5}.inline-feedback{margin:16px 20px 24px;padding-top:20px;border-top:1px solid var(--border);display:flex;flex-direction:column;gap:12px;animation:feedbackIn .32s cubic-bezier(.22,1,.36,1) both}@keyframes feedbackIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.choice-btns{display:flex;flex-direction:column;gap:10px}.choice-btn{width:100%;padding:15px 18px;font-family:var(--sans);font-size:15px;font-weight:500;text-align:left;line-height:1.55;border:1.5px solid var(--border);background:var(--surface-2);color:var(--text);border-radius:var(--radius);cursor:pointer;transition:transform .15s,box-shadow .15s,background .15s,color .15s,border-color .15s}@media (hover:hover){.choice-btn:not(:disabled):hover{border-color:var(--blue);background:var(--accent-dim);color:var(--blue);transform:translateY(-2px);box-shadow:0 6px 18px rgba(33,94,153,.14)}}.choice-btn.answer-selected{border-color:var(--blue);background:var(--blue);color:#fff}.choice-btn:disabled:not(.answer-selected){opacity:.28;cursor:not-allowed}@keyframes badgeSpring{from{transform:scale(.7);opacity:0}to{transform:scale(1);opacity:1}}#screen-level2-intro{align-items:center;justify-content:center;padding:48px 20px 64px}.level2-intro-container{display:flex;flex-direction:column;align-items:center;gap:28px;max-width:500px;width:100%;text-align:center}.level-badge-large{display:inline-flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--blue) 0,var(--blue-mid) 100%);color:#fff;font-size:11px;font-weight:800;letter-spacing:.16em;text-transform:uppercase;padding:8px 28px;border-radius:999px;font-family:var(--mono);box-shadow:0 4px 16px rgba(33,94,153,.32);animation:badgeSpring .5s cubic-bezier(.34,1.56,.64,1) both}.level2-intro-container h2{font-family:var(--serif);font-size:clamp(22px, 5vw, 30px);font-weight:700;color:var(--text);line-height:1.2}.level2-intro-container>p{font-size:15px;color:var(--text-muted);line-height:1.65;max-width:400px}.level2-info{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px 24px;width:100%;display:flex;flex-direction:column;gap:16px;box-shadow:0 2px 12px rgba(33,94,153,.08)}.info-row{display:flex;align-items:center;gap:16px;font-size:14px;font-weight:500;color:var(--text);text-align:left}.info-icon{font-size:22px;width:32px;text-align:center;flex-shrink:0}#screen-email{align-items:center;justify-content:center;padding:48px 16px}.email-container{display:flex;flex-direction:column;align-items:center;gap:24px;max-width:460px;width:100%;text-align:center;background:var(--card);border-radius:20px;padding:48px 48px;box-shadow:0 4px 24px rgba(0,0,0,.18)}.email-icon{display:flex;align-items:center;justify-content:center;margin:0 auto 4px}.email-container h2{font-family:var(--serif);font-size:28px;font-weight:700;color:var(--text)}.email-container p{color:var(--text-muted);font-size:15px}.email-form{width:100%;display:flex;flex-direction:column;gap:14px}.form-field{display:flex;flex-direction:column;gap:5px;text-align:left}.form-label{font-size:12px;font-weight:600;color:var(--text-muted);letter-spacing:.04em;text-transform:uppercase}.error-msg{font-size:13px;color:var(--red);font-weight:500;text-align:left}.success-icon{width:72px;height:72px;background:var(--green);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:30px;color:#021a0d;font-weight:700;box-shadow:0 0 36px rgba(52,211,153,.35);animation:badgeSpring .5s cubic-bezier(.34,1.56,.64,1) both}.success-sub{font-size:13px;color:var(--text-muted)}.success-checkmark{width:80px;height:80px;margin:0 auto 8px;filter:drop-shadow(0 0 16px rgba(52, 211, 153, .5));animation:successFadeIn .4s ease both}.success-checkmark-circle{stroke-dasharray:157;stroke-dashoffset:157;animation:drawCircle .6s ease .1s forwards}.success-checkmark-check{stroke-dasharray:36;stroke-dashoffset:36;animation:drawCheck .4s ease .6s forwards}@keyframes successFadeIn{from{opacity:0;transform:scale(.7)}to{opacity:1;transform:scale(1)}}@keyframes drawCircle{to{stroke-dashoffset:0}}@keyframes drawCheck{to{stroke-dashoffset:0}}.final-score{font-size:20px;font-weight:700;color:var(--text)!important}.final-score strong{color:var(--blue)}.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(80px);background:var(--text);border:none;color:#fff;padding:11px 22px;border-radius:999px;font-size:14px;font-weight:500;z-index:1000;transition:transform .3s cubic-bezier(.22, 1, .36, 1),opacity .3s;opacity:0;white-space:nowrap;max-width:calc(100vw - 48px);text-align:center;box-shadow:0 8px 24px rgba(33,94,153,.25)}@keyframes spin{to{transform:rotate(360deg)}}@media (max-width:480px){.article-btns{gap:8px}.article-btn{padding:18px 6px;font-size:15px}.question-card{border-radius:12px}.q-word{font-size:40px}.btn-large{padding:14px 28px;font-size:16px}.waveform span:nth-child(n+7){display:none}.stage-overview{grid-template-columns:1fr}}@media (max-width:360px){.article-btns{grid-template-columns:1fr}.article-btn{font-size:15px;padding:14px 12px;text-align:left}}#toast-container{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);z-index:10000;display:flex;flex-direction:column;gap:8px;align-items:center;width:90%;max-width:420px;pointer-events:none}.toast{width:100%;background:#1a2f4a;color:#fff;padding:12px 16px;border-radius:8px;font-size:13px;line-height:1.4;word-break:break-word;opacity:0;transform:translateY(8px);transition:opacity .2s ease,transform .2s ease;pointer-events:auto;box-shadow:0 4px 16px rgba(0,0,0,.25)}.toast.toast-visible{opacity:1;transform:translateY(0)}.toast.toast-error{background:#7f1d1d;border-left:3px solid #dc2626}.toast.toast-success{background:#14532d;border-left:3px solid #16a34a}.toast.toast-info{background:#1e3a5f;border-left:3px solid #215e99}@media (max-width:600px){#submit-btn{position:sticky;bottom:16px}.inline-feedback>.btn{position:sticky;bottom:16px}#screen-level2-intro .btn-large{position:sticky;bottom:16px}#results-action-btn{position:sticky;bottom:16px}#screen-email .btn-primary{position:sticky;bottom:16px}#results-action-btn,#screen-email .btn-primary,#screen-level2-intro .btn-large,#submit-btn,.inline-feedback>.btn{box-shadow:0 4px 20px rgba(33,94,153,.32),0 0 0 6px rgba(217,231,253,.9)}}.hidden{display:none}.weiter-full{width:100%}.email-state-panel{text-align:center}.email-desc{margin:16px 0}.loading-spinner{margin:32px auto 20px;width:40px;height:40px;border:3px solid var(--accent);border-top-color:var(--blue);border-radius:50%;animation:spin .8s linear infinite}.sending-msg{margin:0}.success-heading{margin:0 0 8px}.success-p1{margin:0 0 4px}.success-p2{font-size:13px;margin:0}