:root{--bg:#faf8f5;--surface:#fff;--surface-alt:#f0ebe4;--ink:#1a1b2e;--muted:#6b7280;--line:rgba(26,27,46,.08);--primary:#e8634a;--primary-strong:#d14b32;--secondary:#6b9080;--accent:#f0a500;--hero-bg:#0f172a;--shadow:0 20px 50px rgba(26,27,46,.1);--shadow-lg:0 30px 80px rgba(26,27,46,.15)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-height:100vh;color:var(--ink);background-color:var(--bg);font-family:"DM Sans",-apple-system,BlinkMacSystemFont,sans-serif;line-height:1.65;position:relative}body::before{content:'';position:fixed;top:0;left:0;width:100%;height:100%;background-image:url(data:image/svg+xml;utf8,<svg\ xmlns=\"http://www.w3.org/2000/svg\"\ width=\"100\"\ height=\"100\"><filter\ id=\"noise\"><feTurbulence\ type=\"fractalNoise\"\ baseFrequency=\"0.9\"\ numOctaves=\"4\"\ result=\"noise\"/><feColorMatrix\ in=\"noise\"\ type=\"saturate\"\ values=\"0\"/></filter><rect\ width=\"100\"\ height=\"100\"\ fill=\"%23000000\"\ filter=\"url\(%23noise\)\"\ opacity=\"0.012\"/></svg>);pointer-events:none;z-index:1}a{color:inherit}a:focus-visible,button:focus-visible,textarea:focus-visible{outline:3px solid var(--primary);outline-offset:3px}.skip-link{position:absolute;left:16px;top:-48px;background:var(--primary-strong);color:#fff;padding:10px 14px;border-radius:12px;text-decoration:none;font-weight:700;z-index:1000}.skip-link:focus{top:16px}.site-header,main,.site-footer{width:min(1120px,calc(100% - 32px));margin:0 auto;position:relative;z-index:2}.site-header{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:20px 0;transition:all .3s ease;position:relative}.site-header.scrolled{background:rgba(250,248,245,.8);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);padding:16px 0;box-shadow:0 4px 12px rgba(26,27,46,.06)}.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;font-weight:800;letter-spacing:-.03em;color:var(--ink)}.brand-mark{display:block}.brand-text{font-family:"DM Serif Display",serif;font-size:1.2rem;font-weight:400;letter-spacing:-.02em}.site-nav{display:flex;flex-wrap:wrap;align-items:center;gap:24px}.site-nav a{text-decoration:none;color:var(--muted);font-weight:600;font-size:.95rem;transition:color .2s ease}.site-nav a:hover{color:var(--ink)}.language-link{color:var(--ink);font-weight:700}h1,h2,h3,h4,h5,h6{font-family:"DM Serif Display",serif;letter-spacing:-.03em}.eyebrow{margin:0 0 12px;color:var(--primary);font-size:.78rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase}h1{margin:0 0 16px;font-size:clamp(2.4rem,5vw,4rem);line-height:1.1;color:var(--ink)}h2{margin:0 0 16px;font-size:clamp(1.8rem,4vw,3rem);line-height:1.15;color:var(--ink)}h3{margin:0 0 8px;font-size:1.3rem;line-height:1.2;color:var(--ink)}.lede{max-width:44rem;color:var(--muted);font-size:1.08rem;line-height:1.7;margin:0}.mini-note{color:var(--muted);font-size:.94rem;margin-top:14px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 24px;border-radius:999px;border:none;text-decoration:none;cursor:pointer;font:inherit;font-weight:700;font-size:.95rem;transition:all .2s ease}.button-primary{background:linear-gradient(135deg,var(--primary),var(--primary-strong));color:#fff;box-shadow:0 8px 24px rgba(232,99,74,.25)}.button-primary:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(232,99,74,.35)}.button-secondary{background:var(--surface-alt);color:var(--ink);border:1px solid var(--line)}.button-secondary:hover{background:var(--surface);transform:translateY(-2px)}.store-badge{display:inline-flex;align-items:center;justify-content:center;min-height:58px;padding:0;border-radius:16px;background:transparent;text-decoration:none;border:none;cursor:pointer;transition:transform .2s ease}.store-badge:hover{transform:translateY(-2px)}.store-badge img{display:block;height:58px;width:auto}.store-badge-compact{min-height:40px;border-radius:12px}.store-badge-compact img{height:40px}.store-badge-play img{height:86px}.hero{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;padding:60px 0 80px;animation:fadeInUp .8s ease-out}.hero-copy{display:flex;flex-direction:column}.hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:32px}.store-badge-row{display:flex;flex-wrap:wrap;gap:16px;margin-top:28px}.hero-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.pill{display:inline-flex;align-items:center;min-height:36px;padding:0 14px;border-radius:999px;background:var(--surface-alt);color:var(--primary-strong);font-size:.88rem;font-weight:700}a.pill{text-decoration:none}.hero-visual{display:flex;align-items:center;justify-content:center;min-height:500px;position:relative}.hero-flashcard-stack{position:relative;width:100%;max-width:340px;height:420px}.flashcard-mock{position:absolute;width:100%;height:340px;border-radius:24px;padding:32px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);animation:float 6s ease-in-out infinite;transition:transform .3s ease}.flashcard-1{transform:rotate(-3deg) translateY(20px);animation-delay:0s;z-index:3}.flashcard-2{transform:rotate(0deg) translateY(0);animation-delay:.2s;z-index:2}.flashcard-3{transform:rotate(3deg) translateY(-20px);animation-delay:.4s;z-index:1}.flashcard-front{display:flex;flex-direction:column;height:100%;justify-content:center;background:linear-gradient(135deg,rgba(232,99,74,.08),rgba(240,165,0,.06));border-radius:16px;padding:24px}.flashcard-label{font-size:.75rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--primary);margin-bottom:16px}.flashcard-front h3{margin:0;color:var(--ink);font-size:1.4rem;line-height:1.4}@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(var(--rotate, 0deg));
    }
    50% {
        transform: translateY(-12px) rotate(var(--rotate, 0deg));
    }
}.flashcard-1{--rotate:-3deg}.flashcard-2{--rotate:0deg}.flashcard-3{--rotate:3deg}.subject-band{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;padding:40px 0;animation:fadeInUp .9s ease-out}.subject-chip{display:inline-flex;align-items:center;min-height:42px;padding:0 16px;border-radius:999px;background:var(--surface);border:1px solid var(--line);color:var(--ink);font-size:.92rem;font-weight:600;box-shadow:0 4px 12px rgba(26,27,46,.06);transition:all .2s ease}.subject-chip:hover{background:var(--surface-alt);border-color:var(--primary);transform:translateY(-2px)}.section{padding:64px 0;animation:fadeInUp 1s ease-out}.section-heading{margin-bottom:40px}.section-heading-compact{margin-bottom:0}.cta-section{background:linear-gradient(135deg,var(--primary),var(--primary-strong));color:#fff;border-radius:32px;padding:64px;margin:64px 0;text-align:center}.cta-section h2{color:#fff}.cta-section .lede{color:rgba(255,255,255,.85);margin-left:auto;margin-right:auto;margin-bottom:40px}.cta-band{display:flex;flex-wrap:wrap;gap:16px;justify-content:center;align-items:center}.preview-section{padding-top:20px}.preview-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;align-items:end}.preview-device{padding:24px;border-radius:28px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);transition:all .3s ease}.preview-device:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}.preview-device-featured{transform:translateY(-24px)}.preview-device-featured:hover{transform:translateY(-28px)}.preview-header{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:16px}.preview-title{font-size:1rem;font-weight:800;letter-spacing:-.02em;color:var(--ink)}.preview-chip{display:inline-flex;align-items:center;min-height:30px;padding:0 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12px;border-radius:12px;background:rgba(232,99,74,.15);color:var(--primary);font-size:.82rem;font-weight:800}.mini-deck{position:absolute;right:24px;bottom:24px;width:120px;height:120px}.mini-deck-card{position:absolute;inset:0;border-radius:16px;border:1px solid rgba(26,27,46,.12)}.mini-deck-card-back{background:linear-gradient(135deg,#c9daf8 0%,#e6efff 100%);transform:rotate(-9deg) translate(-8px,4px)}.mini-deck-card-front{background:#fff;transform:rotate(8deg);box-shadow:0 12px 24px rgba(26,27,46,.1)}.study-card{padding:20px;border-radius:20px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);color:#fff;margin-bottom:16px}.study-card-label{display:inline-block;margin-bottom:12px;font-size:.75rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;opacity:.8}.study-card strong{display:block;font-size:1.2rem;line-height:1.3;letter-spacing:-.02em;margin-bottom:8px}.study-card p{margin:0;color:rgba(255,255,255,.8);font-size:.95rem}.rating-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}.rating-row span{display:flex;align-items:center;justify-content:center;min-height:38px;border-radius:12px;background:rgba(255,255,255,.12);color:#fff;font-size:.82rem;font-weight:700}.progress-ring{width:130px;height:130px;margin:0 auto 20px;border-radius:999px;display:grid;place-items:center;background:radial-gradient(circle at center,white 0 50px,transparent 51px) , conic-gradient(#245fa7 0 313deg,rgba(36,95,167,.14) 313deg 360deg);box-shadow:inset 0 0 0 1px rgba(26,27,46,.08)}.progress-ring span{font-size:1.3rem;font-weight:800;color:#1b4d89}.progress-bars{display:flex;align-items:flex-end;gap:10px;min-height:90px}.progress-bars span{flex:1;border-radius:10px 10px 4px 4px;background:linear-gradient(180deg,#8cb8ff 0%,#2f68b8 100%)}.preview-caption{margin:0;color:var(--muted);font-size:.92rem}.workflow-panel{background:linear-gradient(135deg,rgba(255,255,255,.95),rgba(240,235,228,.8));border:1px solid var(--line);border-radius:28px;padding:32px;margin-bottom:40px;box-shadow:var(--shadow)}.workflow-strip{display:grid;grid-template-columns:1fr auto 1fr auto 1fr;gap:16px;align-items:center}.workflow-step{padding:24px;border-radius:20px;background:#fff;border:1px solid var(--line);min-height:160px;display:flex;flex-direction:column;justify-content:flex-start}.workflow-step strong{display:block;margin-bottom:8px;color:var(--ink)}.workflow-step p{margin:0;color:var(--muted);font-size:.92rem;line-height:1.5}.workflow-number{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:999px;background:linear-gradient(135deg,var(--primary),var(--primary-strong));color:#fff;font-weight:800;margin-bottom:12px;font-size:.9rem}.workflow-arrow{color:var(--primary);font-size:1.6rem;font-weight:800}.feature-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.feature-card{padding:28px;border-radius:24px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);transition:all .3s ease}.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}.feature-card h3{margin-top:0}.feature-card p{margin:0;color:var(--muted);font-size:.95rem;line-height:1.6}.modes-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.mode-tile{padding:28px;border-radius:24px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);transition:all .3s ease}.mode-tile:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}.mode-primary{background:linear-gradient(135deg,var(--primary),var(--primary-strong));color:#fff;border:none}.mode-primary h3,.mode-primary p{color:#fff}.mode-accent{background:linear-gradient(135deg,rgba(240,165,0,.12),rgba(232,99,74,.08));border-color:rgba(240,165,0,.2)}.mode-audio{background:linear-gradient(135deg,rgba(107,144,128,.12),rgba(107,144,128,.08));border-color:rgba(107,144,128,.2)}.mode-icon{display:inline-flex;align-items:center;justify-content:center;min-width:44px;height:44px;padding:0 12px;border-radius:999px;font-size:1rem;font-weight:800;background:var(--surface-alt);color:var(--primary-strong);margin-bottom:16px}.mode-primary .mode-icon{background:rgba(255,255,255,.2);color:#fff}.mode-accent .mode-icon{background:rgba(240,165,0,.2);color:#d98600}.mode-audio .mode-icon{background:rgba(107,144,128,.2);color:#5a7d6d}.mode-tile h3{margin-top:0}.mode-tile p{margin:0;color:var(--muted);font-size:.95rem;line-height:1.6}.mode-primary p{color:rgba(255,255,255,.85)}.section-split{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}.pricing-panel{display:grid;gap:20px;grid-column: 1 / -1}.pricing-card{padding:32px;border-radius:28px;background:var(--surface);border:2px solid var(--line);box-shadow:var(--shadow);transition:all .3s ease;position:relative}.pricing-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}.pricing-card-premium{border-color:var(--primary);background:linear-gradient(135deg,rgba(232,99,74,.04),rgba(240,165,0,.04))}.pricing-badge{position:absolute;top:-12px;left:24px;background:var(--primary);color:#fff;padding:6px 12px;border-radius:999px;font-size:.75rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase}.pricing-card h3{margin-top:0;color:var(--ink)}.pricing-card p{margin:0;color:var(--muted);font-size:.95rem;line-height:1.6}.pricing-card strong{color:var(--ink)}.showcase-section{display:grid;grid-template-columns:.9fr 1.1fr;gap:40px;align-items:center}.showcase-copy{display:flex;flex-direction:column}.showcase-stack{position:relative;min-height:380px}.showcase-panel{position:absolute;width:min(100%,420px);padding:28px;border-radius:24px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);transition:all .3s ease}.showcase-panel:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}.showcase-panel p{margin:0;color:var(--muted);font-size:.92rem}.showcase-label{display:inline-flex;align-items:center;justify-content:center;min-width:44px;height:44px;padding:0 12px;border-radius:999px;font-size:.85rem;font-weight:800;background:var(--surface-alt);color:var(--primary-strong);margin-bottom:12px}.showcase-panel strong{display:block;font-size:1.2rem;letter-spacing:-.02em;margin-bottom:6px;color:var(--ink)}.showcase-panel-shift{top:100px;left:80px}.showcase-panel-accent{top:200px;left:28px;background:linear-gradient(135deg,var(--primary),var(--primary-strong));color:#fff;border:none}.showcase-panel-accent strong,.showcase-panel-accent .showcase-label{color:#fff}.showcase-panel-accent .showcase-label{background:rgba(255,255,255,.2)}.showcase-panel-accent p{color:rgba(255,255,255,.85)}.site-footer{display:flex;justify-content:space-between;gap:40px;padding:40px 0 48px;border-top:1px solid var(--line);margin-top:40px}.brand-footer{margin-bottom:12px;display:inline-flex}.footer-copy{margin:0;color:var(--muted);font-size:.92rem}.footer-nav{display:grid;gap:10px 24px;grid-template-columns:repeat(2,minmax(0,1fr))}.footer-nav a{text-decoration:none;color:var(--muted);font-weight:600;font-size:.92rem;transition:color .2s ease}.footer-nav a:hover{color:var(--ink)}.content-page,.demo-page{padding:24px 0 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{transform:rotate(-1.5deg) translateY(-8px)}.screenshot-item:nth-child(2):hover {transform:rotate(.5deg) translateY(-8px)}.screenshot-item:nth-child(3):hover {transform:rotate(-.8deg) translateY(-8px)}.screenshot-item:nth-child(4):hover {transform:rotate(1.2deg) translateY(-8px)}@media (max-width:900px){.screenshots-grid{gap:20px}.screenshot-item{width:160px}}@media (max-width:640px){.screenshots-grid{gap:12px}.screenshot-item{width:calc(45% - 6px)}.screenshot-item:nth-child(1),
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    .screenshot-item:nth-child(3),
    .screenshot-item:nth-child(4) {transform:none;margin-top:0}.screenshot-item:nth-child(1):hover,
    .screenshot-item:nth-child(2):hover,
    .screenshot-item:nth-child(3):hover,
    .screenshot-item:nth-child(4):hover {transform:translateY(-4px)}}.invite-shell{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:28px 16px 40px}.invite-card{width:min(760px,100%);padding:40px;background:var(--surface);border:1px solid var(--line);border-radius:32px;box-shadow:var(--shadow-lg);animation:fadeInUp .6s ease-out}.invite-brand{display:inline-flex;align-items:center;gap:14px;margin-bottom:28px;text-decoration:none}.invite-brand-icon{width:64px;height:64px;border-radius:18px;box-shadow:0 12px 32px rgba(26,27,46,.15)}.invite-brand-copy{display:flex;flex-direction:column;gap:2px}.invite-brand-label{color:var(--muted);font-size:.78rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.invite-brand-name{font-size:1.4rem;font-weight:800;letter-spacing:-.03em;color:var(--ink)}.invite-title{margin:0 0 16px;font-size:clamp(2rem,4.8vw,3.2rem);line-height:1.1;letter-spacing:-.03em;color:var(--ink)}.invite-lede,.invite-note,.invite-step{color:var(--muted)}.invite-lede{margin:0 0 24px;font-size:1.08rem}.invite-meta{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px}.invite-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:18px}.invite-fallback{margin-top:12px}.invite-panel-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px;margin-top:28px}.invite-panel{padding:22px;background:var(--surface-alt);border:1px solid var(--line);border-radius:24px}.invite-panel h2,.invite-panel h3{margin:0 0 10px;letter-spacing:-.03em;color:var(--ink)}.invite-panel h2{font-size:1.15rem}.invite-panel h3{font-size:.95rem}.invite-steps{display:grid;gap:12px}.invite-step{display:grid;grid-template-columns:28px 1fr;gap:12px;align-items:start}.invite-step-number{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:999px;background:linear-gradient(135deg,rgba(232,99,74,.15),rgba(240,165,0,.1));color:var(--primary-strong);font-size:.88rem;font-weight:800}.invite-step strong{display:block;color:var(--ink);margin-bottom:2px}.invite-note{margin:0;font-size:.92rem}.invite-status{margin-bottom:18px;color:var(--primary-strong);font-weight:700}.invite-status[data-state="fallback"]{color:var(--accent)}.invite-hidden{display:none!important}.demo-layout{display:grid;grid-template-columns:1fr 1fr;gap:24px}.field-label{display:block;margin-bottom:10px;font-weight:800;color:var(--ink)}.notes-input{width:100%;min-height:320px;padding:16px;border-radius:16px;border:1px solid var(--line);background:var(--surface);color:var(--ink);font:inherit;resize:vertical}.notes-input:focus{outline:3px solid var(--primary);outline-offset:0}.output-header{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px}.output-header h2{margin:0;font-size:1.1rem}.empty-state{padding:24px;border:2px dashed var(--line);border-radius:16px;color:var(--muted);text-align:center}.cards-output{display:grid;gap:12px;max-height:480px;overflow-y:auto}.flashcard{border:1px solid var(--line);border-radius:16px;padding:16px;background:var(--surface-alt)}.flashcard-label{display:inline-block;margin-bottom:12px;color:var(--primary-strong);font-size:.82rem;font-weight:800;text-transform:uppercase;letter-spacing:.08em}.flashcard-row+.flashcard-row{margin-top:10px}.flashcard-row-title{display:block;margin-bottom:4px;font-size:.88rem;font-weight:800;color:var(--ink)}.demo-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.demo-panel{transition:all .2s ease}.demo-panel:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}@media (max-width:900px){.site-header{flex-direction:column;align-items:flex-start}.site-nav{width:100%;justify-content:space-between}.site-nav a:nth-child(-n + 3) {display:none}.hero{grid-template-columns:1fr;gap:40px;padding:40px 0 60px}.hero-visual{min-height:380px}.flashcard-mock{height:300px}.hero-flashcard-stack{max-width:280px;height:340px}.feature-grid,.content-grid,.modes-grid,.preview-grid,.screenshots-grid{grid-template-columns:1fr}.workflow-panel{padding:24px}.workflow-strip{grid-template-columns:1fr}.workflow-arrow{display:none}.preview-device-featured{transform:none}.modes-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.section-split{grid-template-columns:1fr}.showcase-section{grid-template-columns:1fr;gap:24px}.showcase-stack{min-height:auto;display:grid;gap:16px}.showcase-panel,.showcase-panel-shift,.showcase-panel-accent{position:static;width:100%}.cta-section{padding:40px}.section{padding:48px 0}.site-footer{flex-direction:column;gap:24px}.footer-nav{grid-template-columns:repeat(2,minmax(0,1fr))}.demo-layout{grid-template-columns:1fr}.invite-panel-grid{grid-template-columns:1fr}.invite-card{padding:28px}.feature-card,.content-card,.faq-item,.pricing-card,.demo-panel,.callout{padding:24px}}@media (max-width:640px){.modes-grid{grid-template-columns:1fr}.subject-band{padding:28px 0}.hero-actions,.cta-band{flex-direction:column}.button{width:100%}.section{padding:40px 0}.hero{padding:32px 0 48px}.preview-device{padding:16px}.cta-section{padding:32px;border-radius:24px;margin:48px 0}.section-heading{margin-bottom:24px}}