@import "https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@700;800;900&family=Be+Vietnam+Pro:wght@400;600;700;800&display=swap";:root{--duo-blue:#5b5fef;--duo-blue-dark:#4347c4;--duo-green:#12a594;--duo-green-dark:#0e8377;--duo-gold:#f5a623;--duo-gold-dark:#d68910;--duo-red:#ff4b4b;--duo-red-dark:#ea2b2b;--duo-purple:#e24a90;--duo-purple-dark:#c22f72;--duo-coral:#e8654b;--navy:#1e2749;--navy-light:#28345e;--bg:#fff;--bg-soft:#f7f7f7;--text:#3c3c3c;--text-light:#777;--border:#e5e5e5;--locked:#cdcdcd;--font-heading:"Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;--font-body:"Be Vietnam Pro", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;font-family:var(--font-body);color:var(--text);background:var(--bg-soft)}*{box-sizing:border-box}body{min-height:100vh;margin:0}h1,h2,h3,p{margin:0}h1,h2,h3{font-family:var(--font-heading)}button{font-family:inherit}.app-loading{min-height:100vh;color:var(--text-light);justify-content:center;align-items:center;font-size:1.2rem;display:flex}.duo-btn{border:2px solid var(--navy);text-transform:uppercase;letter-spacing:.5px;cursor:pointer;color:#fff;background:var(--duo-blue);box-shadow:4px 4px 0 var(--navy);border-radius:4px;justify-content:center;align-items:center;gap:8px;padding:13px 24px;font-size:1rem;font-weight:800;text-decoration:none;transition:transform 80ms,box-shadow 80ms;display:inline-flex}.duo-btn:active{box-shadow:0 0 0 var(--navy);transform:translate(4px,4px)}.duo-btn:disabled{background:var(--locked);cursor:not-allowed;box-shadow:4px 4px #b0b0b0}.duo-btn.duo-btn-blue{background:var(--duo-blue)}.duo-btn.duo-btn-outline{color:var(--navy);border:2px solid var(--navy);box-shadow:4px 4px 0 var(--border);background:#fff}.duo-btn.duo-btn-outline:active{box-shadow:0 0 0 var(--border)}.progress-ring-label{font-family:var(--font-heading);fill:var(--navy);font-weight:900}.login-page{background:linear-gradient(#5b5fef 0%,#4347c4 100%);justify-content:center;align-items:center;min-height:100vh;padding:24px;display:flex}.login-card{text-align:center;background:#fff;border-radius:24px;width:100%;max-width:380px;padding:40px 32px;box-shadow:0 12px #00000026}.login-logo{color:var(--duo-blue);justify-content:center;align-items:center;margin:0 auto 16px;display:flex}.login-card h1{font-family:var(--font-heading);color:var(--duo-blue-dark);margin-bottom:12px;font-size:2rem;font-weight:900}.login-card p{color:var(--text-light);margin-bottom:28px;line-height:1.5}.login-card .duo-btn{width:100%}.marketing-page{background:#fff;overflow-x:hidden}.marketing-nav{z-index:10;border-bottom:2px solid var(--border);background:#fff;justify-content:space-between;align-items:center;padding:16px 24px;display:flex;position:sticky;top:0}.marketing-brand{font-family:var(--font-heading);color:var(--navy);align-items:center;gap:5px;font-size:1.2rem;font-weight:900;text-decoration:none;display:inline-flex}.marketing-brand svg{color:var(--duo-blue)}.marketing-nav-btn{padding:10px 20px;font-size:.85rem}.marketing-hero-section{background:linear-gradient(#e8e9fd 0%,#fff 100%);position:relative;overflow:hidden}.marketing-hero{z-index:1;align-items:center;gap:48px;max-width:1080px;margin:0 auto;padding:72px 24px;display:flex;position:relative}.marketing-hero-copy{flex:1;min-width:280px}.marketing-hero-copy h1{color:var(--navy);margin-bottom:20px;font-size:2.5rem;font-weight:900;line-height:1.15}.marketing-hero-copy p{color:var(--text-light);max-width:460px;margin-bottom:28px;font-size:1.05rem;line-height:1.6}.marketing-hero-cta{padding:16px 32px;font-size:1.05rem}.marketing-hero-visual{flex:none;justify-content:center;display:flex;position:relative}.hero-sparkle{animation:3s ease-in-out infinite float-sparkle;position:absolute}.hero-sparkle-1{animation-delay:0s;top:8%;left:8%}.hero-sparkle-2{animation-delay:.6s;top:18%;right:6%}.hero-sparkle-3{animation-delay:1.2s;bottom:12%;left:2%}@keyframes float-sparkle{0%,to{transform:translateY(0)rotate(0)}50%{transform:translateY(-10px)rotate(12deg)}}@media (prefers-reduced-motion:reduce){.hero-sparkle,.cta-sparkle{animation:none}}.phone-mockup{border:8px solid var(--navy);background:#fff;border-radius:32px;width:220px;padding:16px 14px;box-shadow:0 16px #123a5c1f}.phone-mockup-topbar{justify-content:space-between;margin-bottom:20px;font-size:.85rem;font-weight:800;display:flex}.phone-mockup-path{flex-direction:column;align-items:center;gap:22px;padding:8px 0 4px;display:flex}.phone-node{color:#fff;border-radius:50%;justify-content:center;align-items:center;width:48px;height:48px;font-size:1.1rem;font-weight:900;display:flex;box-shadow:0 4px #0000002e}.phone-node:nth-child(odd){align-self:flex-start;margin-left:20%}.phone-node:nth-child(2n){align-self:flex-end;margin-right:20%}.phone-node-current{outline:3px solid #fff;box-shadow:0 4px #0000002e,0 0 0 6px #e8654b40}.phone-node-locked{background:var(--locked);color:#fff;font-size:1rem;box-shadow:0 4px #b0b0b0}.hero-floating-badge{background:#fff;border-radius:16px;align-items:center;gap:10px;padding:10px 16px;font-size:.8rem;display:flex;position:absolute;bottom:-14px;left:-36px;transform:rotate(-4deg);box-shadow:0 10px 24px #123a5c2e}.hero-floating-badge-icon{font-size:1.4rem}.hero-floating-badge strong{font-size:.85rem;display:block}.hero-floating-badge-sub{color:var(--text-light);font-size:.75rem}.marketing-showcase{align-items:center;gap:56px;max-width:1080px;margin:0 auto;padding:56px 24px;display:flex}.marketing-showcase-reverse{flex-direction:row-reverse}.showcase-illustration{flex:1;justify-content:center;display:flex}.showcase-copy{flex:1;min-width:260px}.showcase-eyebrow{letter-spacing:.5px;text-transform:uppercase;color:var(--duo-blue-dark);background:#e8e9fd;border-radius:999px;margin-bottom:14px;padding:5px 14px;font-size:.75rem;font-weight:800;display:inline-block}.showcase-copy h2{color:var(--navy);margin-bottom:14px;font-size:1.7rem;font-weight:900;line-height:1.25}.showcase-copy p{color:var(--text-light);max-width:420px;font-size:1rem;line-height:1.6}.journey-path-card{border:2px solid var(--border);background:#fff;border-radius:24px;flex-direction:column;align-items:center;gap:20px;width:260px;padding:28px 24px;display:flex;box-shadow:0 10px #0000000a}.journey-path-pill{letter-spacing:.5px;color:#fff;background:var(--text-light);border-radius:999px;padding:6px 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#0000002e}.journey-path-node-locked{background:var(--locked);box-shadow:0 4px #b0b0b0}.journey-path-node-current{outline:3px solid #fff;box-shadow:0 4px #0000002e,0 0 0 6px #e8654b40}.streak-squad{border:2px solid var(--border);text-align:center;background:#fff;border-radius:24px;width:320px;padding:28px 32px;box-shadow:0 10px #0000000a}.streak-squad-pill{color:#ff9600;background:#fff1e0;border-radius:999px;margin-bottom:24px;padding:6px 14px;font-size:.8rem;font-weight:800;display:inline-block}.streak-squad-row{justify-content:center;align-items:flex-end;gap:20px;display:flex;position:relative}.streak-squad-row:before{content:"";border-top:3px dashed var(--border);z-index:0;position:absolute;top:28px;left:12%;right:12%}.streak-avatar{z-index:1;background:var(--bg-soft);width:56px;height:56px;box-shadow:0 0 0 2px var(--border);border:3px solid #fff;border-radius:50%;justify-content:center;align-items:center;font-size:1.4rem;display:flex;position:relative}.streak-avatar-you{width:64px;height:64px;box-shadow:0 0 0 3px var(--duo-blue);transform:translateY(-10px)}.streak-avatar-badge{border:2px solid var(--border);white-space:nowrap;background:#fff;border-radius:999px;padding:2px 6px;font-size:.65rem;font-weight:800;position:absolute;bottom:-10px;right:-8px}.streak-squad-caption{color:var(--text-light);margin-top:22px;font-size:.85rem;font-weight:700}.progress-showcase{border:2px solid var(--border);text-align:center;background:#fff;border-radius:24px;padding:36px 44px;position:relative;box-shadow:0 10px #0000000a}.progress-showcase-ring{justify-content:center;display:flex}.progress-showcase-caption{color:var(--text-light);margin-top:14px;font-size:.85rem;font-weight:700}.progress-badge-chip{border:2px solid var(--border);background:#fff;border-radius:50%;justify-content:center;align-items:center;width:38px;height:38px;font-size:1.05rem;display:flex;position:absolute;box-shadow:0 4px 10px #00000014}.progress-badge-chip-a{top:6%;left:2%;transform:rotate(-8deg)}.progress-badge-chip-b{top:-4%;right:12%;transform:rotate(10deg)}.progress-badge-chip-c{bottom:14%;right:-4%;transform:rotate(-6deg)}.marketing-features{text-align:center;max-width:1080px;margin:0 auto;padding:64px 24px}.marketing-features h2{color:var(--navy);margin-bottom:40px;font-size:1.8rem;font-weight:900}.marketing-features-grid{text-align:left;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px;display:grid}.marketing-feature-card{border:2px solid var(--border);background:#fff;border-radius:20px;padding:24px 20px}.marketing-feature-icon{border-radius:16px;justify-content:center;align-items:center;width:52px;height:52px;margin-bottom:14px;font-size:1.5rem;display:flex}.marketing-feature-icon.tint-blue{background:#e8e9fd}.marketing-feature-icon.tint-green{background:#dff5f2}.marketing-feature-icon.tint-gold{background:#fdecd2}.marketing-feature-icon.tint-coral{background:#fbe4df}.marketing-feature-card h3{margin-bottom:8px;font-size:1.05rem;font-weight:800}.marketing-feature-card p{color:var(--text-light);font-size:.9rem;line-height:1.5}.marketing-steps{background:var(--bg-soft)}.marketing-steps-inner{text-align:center;max-width:1080px;margin:0 auto;padding:64px 24px}.marketing-steps-inner h2{color:var(--navy);margin-bottom:8px;font-size:1.8rem;font-weight:900}.marketing-steps-sub{color:var(--text-light);margin-bottom:40px;font-size:1rem}.marketing-steps-row{flex-wrap:wrap;justify-content:center;gap:40px;display:flex;position:relative}.marketing-steps-row:before{content:"";border-top:3px 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34px)}.step-visual-read{flex-direction:column;align-items:center;gap:7px;width:100%;max-width:180px;margin:0 auto;display:flex}.step-read-badge{letter-spacing:.3px;text-transform:uppercase;color:#7a4a00;background:var(--duo-gold);border-radius:999px;margin-bottom:3px;padding:3px 10px;font-size:.55rem;font-weight:800}.step-read-line{background:var(--border);border-radius:3px;width:100%;height:6px;display:block}.step-visual-quiz{flex-direction:column;gap:6px;width:100%;max-width:180px;margin:0 auto;display:flex}.step-quiz-row{background:var(--bg-soft);border-radius:999px;justify-content:space-between;align-items:center;gap:8px;padding:6px 12px;font-size:.65rem;font-weight:700;display:flex}.step-quiz-row-correct{color:var(--duo-green-dark);background:#d4f3ee}.step-quiz-radio{border:2px solid var(--border);border-radius:50%;flex:none;width:12px;height:12px}.step-quiz-radio-correct{background:var(--duo-green);border-color:var(--duo-green);color:#fff;justify-content:center;align-items:center;font-size:.55rem;display:flex}.marketing-cta{background:var(--navy);color:#fff;text-align:center;padding:64px 24px;position:relative;overflow:hidden}.cta-sparkle{opacity:.5;animation:3.4s ease-in-out infinite float-sparkle;position:absolute}.cta-sparkle-1{top:18%;left:12%}.cta-sparkle-2{animation-delay:.8s;bottom:20%;right:14%}.marketing-cta h2{z-index:1;margin-bottom:12px;font-size:1.8rem;font-weight:900;position:relative}.marketing-cta p{z-index:1;color:#d9daf9;margin-bottom:28px;font-size:1rem;position:relative}.marketing-cta-btn{z-index:1;color:var(--navy);border-color:var(--navy-light);box-shadow:4px 4px 0 var(--navy-light);background:#fff;padding:16px 32px;font-size:1.05rem;position:relative}.marketing-cta-btn:active{box-shadow:0 0 0 var(--navy-light)}.marketing-footer{text-align:center;color:var(--text-light);padding:28px 24px;font-size:.85rem}.marketing-footer-links{justify-content:center;gap:24px;margin-bottom:14px;display:flex}.marketing-footer-links a{color:var(--text-light);font-size:.85rem;font-weight:700;text-decoration:none}.marketing-footer-links a:hover{color:var(--navy)}@media (width<=900px){.marketing-showcase,.marketing-showcase-reverse{text-align:center;flex-direction:column;gap:32px}.showcase-copy p{margin-left:auto;margin-right:auto}}@media (width<=760px){.marketing-steps-row{flex-direction:column;align-items:center;gap:36px}.marketing-steps-row:before{display:none}.marketing-step{max-width:280px}}@media (width<=700px){.marketing-hero{text-align:center;flex-direction:column;padding:48px 20px 64px}.marketing-hero-copy p{margin-left:auto;margin-right:auto}.marketing-hero-copy h1{font-size:1.9rem}.marketing-features,.marketing-steps-inner,.marketing-showcase,.marketing-showcase-reverse{padding-left:20px;padding-right:20px}.hero-floating-badge{bottom:-20px;left:50%;transform:translate(-50%)rotate(-2deg)}}.mission-hero{background:linear-gradient(#e8e9fd 0%,#fff 100%)}.mission-hero-inner{text-align:center;max-width:720px;margin:0 auto;padding:72px 24px 56px}.mission-eyebrow{letter-spacing:.5px;text-transform:uppercase;color:var(--duo-blue-dark);background:#e8e9fd;border-radius:999px;margin-bottom:18px;padding:5px 14px;font-size:.75rem;font-weight:800;display:inline-block}.mission-hero h1{color:var(--navy);margin-bottom:18px;font-size:2.2rem;font-weight:900;line-height:1.2}.mission-hero p{color:var(--text-light);font-size:1.05rem;line-height:1.65}.mission-belief{background:var(--bg-soft)}.mission-belief-inner{text-align:center;max-width:640px;margin:0 auto;padding:64px 24px}.mission-belief-inner h2{color:var(--navy);margin-bottom:16px;font-size:1.6rem;font-weight:900}.mission-belief-inner p{color:var(--text-light);font-size:1rem;line-height:1.7}@media (width<=700px){.mission-hero-inner{padding:48px 20px 40px}.mission-hero h1{font-size:1.7rem}}.support-options{text-align:center;max-width:1080px;margin:0 auto;padding:56px 24px 64px}.support-options h2{color:var(--navy);margin-bottom:8px;font-size:1.8rem;font-weight:900}.support-options-sub{color:var(--text-light);margin-bottom:40px;font-size:1rem}.support-options-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;display:grid}.support-option-card{border:2px solid var(--border);opacity:.7;background:#fff;border-radius:20px;flex-direction:column;align-items:center;gap:10px;padding:32px 20px;display:flex}.support-option-icon{background:var(--bg-soft);border-radius:16px;justify-content:center;align-items:center;width:52px;height:52px;font-size:1.5rem;display:flex}.support-option-card h3{color:var(--text);font-size:1.02rem;font-weight:800}.support-option-badge{letter-spacing:.4px;text-transform:uppercase;color:var(--text-light);background:var(--bg-soft);border-radius:999px;padding:4px 12px;font-size:.7rem;font-weight:800}.terms-page{max-width:680px;margin:0 auto;padding:56px 24px 72px}.terms-page h1{color:var(--navy);margin-bottom:6px;font-size:2rem;font-weight:900}.terms-updated{color:var(--text-light);margin-bottom:28px;font-size:.85rem;font-weight:700}.terms-page>p{color:var(--text-light);margin-bottom:36px;font-size:1rem;line-height:1.7}.terms-page section{margin-bottom:28px}.terms-page section h2{color:var(--navy);margin-bottom:8px;font-size:1.1rem;font-weight:800}.terms-page section p{color:var(--text-light);font-size:.95rem;line-height:1.7}@media (width<=700px){.terms-page{padding:40px 20px 56px}.terms-page h1{font-size:1.6rem}}.bottom-nav{z-index:20;border-top:2px solid var(--border);padding:10px 8px calc(10px + env(safe-area-inset-bottom));background:#fff;display:flex;position:fixed;bottom:0;left:0;right:0}@media (width>=1024px){.bottom-nav{display:none}}.bottom-nav-tab{color:var(--text-light);flex-direction:column;flex:1;justify-content:center;align-items:center;gap:5px;padding:6px 0;text-decoration:none;transition:color .15s;display:flex}.bottom-nav-icon{justify-content:center;align-items:center;display:flex}.bottom-nav-tab-active{color:var(--duo-blue)}.bottom-nav-dot{background:var(--duo-blue);opacity:0;border-radius:50%;width:5px;height:5px;transition:opacity .15s}.bottom-nav-tab-active .bottom-nav-dot{opacity:1}.home-title{margin-bottom:20px;font-size:1.5rem;font-weight:900}.home-loading{color:var(--text-light)}.home-section{color:var(--text-light);text-transform:uppercase;letter-spacing:.5px;margin:24px 0 12px;font-size:1.1rem;font-weight:800}.book-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:16px;display:grid}.book-card{color:var(--text);border:2px solid var(--border);background:#fff;border-radius:20px;flex-direction:column;align-items:center;gap:8px;padding:20px 14px;text-decoration:none;transition:transform .1s;display:flex}.book-card:hover{transform:translateY(-2px)}.book-card-icon{border-radius:16px;justify-content:center;align-items:center;width:56px;height:56px;font-size:1.8rem;display:flex}.book-card-name{text-align:center;font-weight:800}.book-card-progress-track{background:var(--bg-soft);border-radius:4px;width:100%;height:8px;overflow:hidden}.book-card-progress-fill{border-radius:4px;height:100%}.book-card-progress-label{color:var(--text-light);font-size:.8rem;font-weight:700}.read-together-link{width:fit-content;color:var(--duo-blue);text-underline-offset:3px;cursor:pointer;background:0 0;border:none;align-items:center;gap:6px;margin:0 auto 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h2{font-size:1.05rem;font-weight:900}.read-together-close{color:var(--text-light);cursor:pointer;background:0 0;border:none;padding:4px;font-size:1.1rem;line-height:1}.read-together-members{border-bottom:2px solid var(--bg-soft);flex-direction:column;gap:12px;margin-bottom:18px;padding-bottom:18px;display:flex}.read-together-member{align-items:center;gap:12px;display:flex}.read-together-member-avatar{background:var(--bg-soft);border-radius:50%;flex:none;justify-content:center;align-items:center;width:36px;height:36px;font-size:1.1rem;display:flex}.read-together-member-info{flex-direction:column;flex:1;display:flex}.read-together-member-name{font-size:.88rem;font-weight:800}.read-together-member-step{color:var(--text-light);font-size:.78rem;font-weight:700}.read-together-mock-action{border:2px solid var(--border);color:var(--text-light);cursor:pointer;background:0 0;border-radius:999px;flex:none;padding:5px 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