*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--practice-accent-from: #b8c5ff;--practice-accent-to: #92a1f7;--practice-tint: #f0f2ff;--classroom-accent-from: #ffd89e;--classroom-accent-to: #f0b960;--classroom-tint: #fdf8f0;--hero-bg: #1a1d2e;--hero-bg-deep: #0f1118;--max-width: 1080px;--text: #1a1a2e;--text-muted: #555;--bg: #ffffff;--radius: 12px;--radius-sm: 8px}html{scroll-behavior:smooth;scroll-padding-top:72px}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}a{text-decoration:none;color:inherit}ul{list-style:none}img{max-width:100%}.container{max-width:var(--max-width);margin:0 auto;padding:0 24px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 28px;border-radius:var(--radius-sm);font-size:1rem;font-weight:600;transition:transform .15s,box-shadow .15s,opacity .15s;cursor:pointer;border:none}.btn:hover{transform:translateY(-1px);box-shadow:0 4px 12px #00000026}.btn-sm{padding:8px 20px;font-size:.9rem}.btn-primary{background:linear-gradient(135deg,var(--practice-accent-from),var(--practice-accent-to));color:#1a1a2e}.btn-outline-amber{background:transparent;color:var(--classroom-accent-to);border:2px solid var(--classroom-accent-to)}.btn-outline-amber:hover{background:var(--classroom-accent-to);color:#1a1a2e}.btn-disabled{background:#e0e0e0;color:#888;cursor:default;pointer-events:none}.navbar{position:sticky;top:0;z-index:100;background:#fffffff2;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid #eee}.navbar-inner{max-width:var(--max-width);margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:64px}.navbar-brand{font-weight:700;font-size:1.15rem;white-space:nowrap}.navbar-links{display:flex;align-items:center;gap:28px}.navbar-links a{font-size:.95rem;font-weight:500;color:var(--text-muted);transition:color .15s}.navbar-links a:hover{color:var(--text)}.navbar-toggle{display:none;background:none;border:none;cursor:pointer;width:36px;height:36px;position:relative}.hamburger,.hamburger:before,.hamburger:after{display:block;width:22px;height:2px;background:var(--text);border-radius:2px;transition:transform .25s,opacity .25s;position:absolute;left:7px}.hamburger{top:17px}.hamburger:before{content:"";top:-7px}.hamburger:after{content:"";top:7px}.hamburger.open{background:transparent}.hamburger.open:before{top:0;transform:rotate(45deg)}.hamburger.open:after{top:0;transform:rotate(-45deg)}.hero{position:relative;background:linear-gradient(160deg,var(--hero-bg),var(--hero-bg-deep));color:#fff;text-align:center;padding:100px 24px 80px;overflow:hidden}.hero-bg-symbol{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);font-size:40vw;font-weight:700;opacity:.04;line-height:1;pointer-events:none;-webkit-user-select:none;user-select:none}.hero-content{position:relative}.hero h1{font-size:clamp(2.2rem,5vw,3.5rem);font-weight:800;margin-bottom:16px;letter-spacing:-.02em}.hero-sub{font-size:clamp(1rem,2.5vw,1.25rem);color:#ffffffbf;max-width:540px;margin:0 auto 36px}.hero-ctas{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}.hero-platforms{margin-top:32px;font-size:.9rem;color:#ffffff73}.how-it-works{padding:80px 24px;text-align:center}.how-it-works h2{font-size:2rem;font-weight:700;margin-bottom:48px}.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}.step-card{background:#f8f9fc;border-radius:var(--radius);padding:36px 24px;text-align:center}.step-icon{font-size:2.5rem;display:block;margin-bottom:16px}.step-card h3{font-size:1.15rem;font-weight:700;margin-bottom:8px}.step-card p{font-size:.95rem;color:var(--text-muted);line-height:1.5}.feature-section{padding:80px 24px}.practice-theme{background:var(--practice-tint)}.classroom-theme{background:var(--classroom-tint)}.feature-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}.feature-grid.reverse{direction:rtl}.feature-grid.reverse>*{direction:ltr}.badge{display:inline-block;padding:4px 14px;border-radius:20px;font-size:.75rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;margin-bottom:12px}.badge-practice{background:linear-gradient(135deg,var(--practice-accent-from),var(--practice-accent-to));color:#1a1a2e}.badge-classroom{background:linear-gradient(135deg,var(--classroom-accent-from),var(--classroom-accent-to));color:#1a1a2e}.feature-info h2{font-size:2rem;font-weight:700;margin-bottom:8px}.feature-intro{font-size:.95rem;color:var(--text-muted);margin-bottom:24px}.feature-list{display:flex;flex-direction:column;gap:16px}.feature-list li{display:flex;flex-direction:column;gap:2px}.feature-list li strong{font-size:1rem}.feature-list li span{font-size:.9rem;color:var(--text-muted)}.screenshot-frame{border-radius:var(--radius);box-shadow:0 8px 32px #0000001f;overflow:hidden;background:#fff}.screenshot-frame img{display:block;width:100%;height:auto}.practice-mockup .screenshot-frame{max-width:300px;margin:0 auto;border-radius:24px;border:6px solid #1a1a2e}.screenshot-frame-wide{border-radius:var(--radius);border:2px solid #e0e0e0}.screenshot-collage{display:flex;flex-direction:column;gap:8px}.screenshot-collage img{display:block;width:100%;height:auto;border-radius:var(--radius-sm);box-shadow:0 4px 16px #0000001a;border:1px solid #e0e0e0}.screenshot-collage .collage-main{border-radius:var(--radius)}.screenshot-collage .collage-row{display:grid;grid-template-columns:1fr;gap:8px}.platforms{padding:80px 24px;text-align:center}.platforms h2{font-size:2rem;font-weight:700;margin-bottom:48px}.platforms-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.platform-card{background:#f8f9fc;border-radius:var(--radius);padding:32px 24px}.platform-card h3{font-size:1.25rem;font-weight:700;margin-bottom:8px}.platform-card p{font-size:.95rem;color:var(--text-muted);margin-bottom:20px}.platform-links{display:flex;flex-direction:column;gap:8px;align-items:center}.footer{background:var(--hero-bg);color:#fff;text-align:center;padding:64px 24px 40px}.footer-ctas{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-bottom:24px}.footer-note{font-size:.95rem;color:#fff9;margin-bottom:32px}.footer-copy{font-size:.8rem;color:#ffffff59}@media(max-width:768px){.navbar-toggle{display:block}.navbar-links{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;flex-direction:column;padding:16px 24px 24px;gap:16px;border-bottom:1px solid #eee;box-shadow:0 8px 24px #00000014}.navbar-links.open{display:flex}.hero{padding:64px 24px 56px}.steps-grid{grid-template-columns:1fr;max-width:400px;margin:0 auto}.feature-grid,.feature-grid.reverse{grid-template-columns:1fr;direction:ltr;gap:32px}.feature-mockup{order:-1}.platforms-grid{grid-template-columns:1fr;max-width:360px;margin:0 auto}}