:root{--color-reading: #2B9E9E;--color-writing: #5C6BC0;--color-vocab: #F59E0B;--color-listening: #0EA5E9;--color-speaking: #E11D78;--color-review: #64748B;--color-bg: #f8f9fa;--color-card: #ffffff;--color-text: #1e293b;--color-text-secondary: #64748b;--color-correct: #10b981;--color-wrong: #ef4444;--color-neutral: #6b7280;--color-border: #e2e8f0;--radius: 16px;--radius-sm: 12px;--shadow: 0 1px 3px rgba(0, 0, 0, .04), 0 4px 16px rgba(0, 0, 0, .04);--shadow-lg: 0 2px 8px rgba(0, 0, 0, .04), 0 8px 32px rgba(0, 0, 0, .06);--max-width: 800px;--max-width-exam: 1400px}*{margin:0;padding:0;box-sizing:border-box}html{font-size:16px;-webkit-text-size-adjust:100%}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--color-bg);color:var(--color-text);min-width:320px;overflow-x:hidden;line-height:1.65;letter-spacing:-.01em}.container{max-width:var(--max-width);margin:0 auto;padding:0 20px}.card{background:var(--color-card);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}button,.btn{min-height:48px;min-width:48px;border:none;border-radius:var(--radius-sm);font-size:.95rem;font-weight:500;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;padding:12px 20px;transition:transform .15s ease,opacity .15s ease,box-shadow .15s ease;-webkit-tap-highlight-color:transparent}button:active,.btn:active{transform:scale(.97)}.btn-option{background:#fff;color:var(--color-text);border:none;box-shadow:var(--shadow);width:100%;text-align:left;padding:16px 18px;font-weight:400;border-radius:var(--radius);transition:background .15s ease,opacity .2s ease,box-shadow .15s ease,transform .15s ease}.btn-option:not(:disabled):hover{background:color-mix(in srgb,var(--accent, var(--color-reading)) 5%,white);box-shadow:var(--shadow-lg)}.btn-option:not(:disabled):active{transform:scale(.97);background:color-mix(in srgb,var(--accent, var(--color-reading)) 8%,white)}.btn-option:disabled{opacity:.4;cursor:default;transform:none}.btn-option.correct{background:#f0fdf4;box-shadow:0 0 0 2px color-mix(in srgb,var(--color-correct) 30%,transparent);opacity:1;font-weight:500}.btn-option.wrong{background:#fef2f2;box-shadow:none;opacity:1}.btn-reading{background:var(--color-reading);color:#fff}.btn-writing{background:var(--color-writing);color:#fff}.btn-vocab{background:var(--color-vocab);color:#fff}textarea,input[type=text]{width:100%;min-height:48px;padding:14px 16px;border:none;border-radius:var(--radius-sm);font-size:1rem;font-family:inherit;line-height:1.5;background:var(--color-bg);color:var(--color-text);transition:box-shadow .2s ease}textarea:focus,input[type=text]:focus{outline:none;box-shadow:0 0 0 2px color-mix(in srgb,var(--accent, var(--color-reading)) 30%,transparent)}h1{font-size:1.5rem;font-weight:700;line-height:1.3;letter-spacing:-.02em}h2{font-size:1.2rem;font-weight:600;line-height:1.35;letter-spacing:-.01em}h3{font-size:1.05rem;font-weight:600}.text-secondary{color:var(--color-text-secondary)}.text-center{text-align:center}@keyframes slide-in{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes slide-up{0%{opacity:0;transform:translateY(20px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}.animate-slide-in{animation:slide-in .35s ease}.animate-slide-up{animation:slide-up .3s cubic-bezier(.34,1.56,.64,1)}.accent-card{border-left:3px solid var(--accent, var(--color-reading))}.question-text{font-size:1.05rem;font-weight:600;line-height:1.5;margin:8px 0}.progress-dots{display:flex;gap:8px;align-items:center}.progress-dot{width:30px;height:30px;border-radius:50%;background:var(--color-border);display:flex;align-items:center;justify-content:center;font-size:.7rem;font-weight:600;color:transparent;transition:all .25s ease;border:2px solid transparent}.progress-dot.active{background:color-mix(in srgb,var(--accent, var(--color-reading)) 15%,white);border-color:var(--accent, var(--color-reading));box-shadow:0 0 0 3px color-mix(in srgb,var(--accent, var(--color-reading)) 12%,transparent);color:var(--accent, var(--color-reading))}.progress-dot.done{background:var(--accent, var(--color-reading));color:#fff}.progress-dot.done:after{content:"✓";font-size:.75rem;font-weight:700}.app.svelte-12qhfyh{min-height:100dvh;display:flex;flex-direction:column}.app.exam-mode.svelte-12qhfyh{overflow:hidden;height:100vh}main.svelte-12qhfyh{flex:1;padding-top:16px;padding-bottom:80px}.bottom-nav.svelte-12qhfyh{position:fixed;bottom:0;left:0;right:0;display:flex;justify-content:center;gap:0;background:var(--color-card);box-shadow:0 -1px 8px #0000000f;padding:8px 0;padding-bottom:env(safe-area-inset-bottom,8px);z-index:100}.nav-item.svelte-12qhfyh{display:flex;flex-direction:column;align-items:center;gap:2px;padding:6px 32px;text-decoration:none;color:var(--color-text-secondary);font-size:.75rem;transition:color .15s ease;-webkit-tap-highlight-color:transparent}.nav-item.active.svelte-12qhfyh{color:var(--color-reading)}.nav-icon.svelte-12qhfyh{font-size:1.3rem}.nav-label.svelte-12qhfyh{font-weight:600}.id-gate.svelte-12qhfyh{position:fixed;inset:0;z-index:999;background:var(--color-bg);display:flex;align-items:center;justify-content:center;padding:24px}.id-card.svelte-12qhfyh{background:var(--color-card);border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:40px 32px;text-align:center;width:100%;max-width:380px}.id-title.svelte-12qhfyh{font-size:2rem;font-weight:700;background:linear-gradient(135deg,var(--color-reading),var(--color-writing));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.id-subtitle.svelte-12qhfyh{color:var(--color-text-secondary);font-size:.9rem;margin-top:4px}.id-card.svelte-12qhfyh form:where(.svelte-12qhfyh){display:flex;flex-direction:column;gap:12px;margin-top:24px}.id-card.svelte-12qhfyh input:where(.svelte-12qhfyh){padding:12px 16px;border:2px solid var(--color-border);border-radius:var(--radius-sm);font-size:1rem;text-align:center;outline:none;transition:border-color .15s ease}.id-card.svelte-12qhfyh input:where(.svelte-12qhfyh):focus{border-color:var(--color-reading)}.btn-start.svelte-12qhfyh{min-height:48px;border:none;border-radius:var(--radius-sm);background:var(--color-reading);color:#fff;font-size:1rem;font-weight:600;cursor:pointer;transition:opacity .15s ease,transform .15s ease;box-shadow:0 2px 8px color-mix(in srgb,var(--color-reading) 25%,transparent)}.btn-start.svelte-12qhfyh:disabled{opacity:.4;cursor:not-allowed}.btn-start.svelte-12qhfyh:not(:disabled):active{transform:scale(.97)}