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var(--transition-fast);align-items:center;gap:6px;font-weight:500;text-decoration:none;display:inline-flex}.back-link:hover{color:var(--color-text-main)}.back-link svg{transition:transform var(--transition-fast)}.back-link:hover svg{transform:translate(-2px)}.success-panel{text-align:center;display:none}.success-icon-wrap{width:52px;height:52px;margin:0 auto var(--space-5);background:#22c55e14;border:1px solid #22c55e2e;border-radius:50%;justify-content:center;align-items:center;display:flex}.success-panel h2{font-size:var(--text-xl);color:var(--color-text-main);letter-spacing:var(--tracking-tight);margin-bottom:var(--space-2);font-weight:700}.success-panel p{font-size:var(--text-sm);color:var(--color-text-muted);line-height:var(--leading-normal);margin-bottom:var(--space-6)}@media (width<=768px){.mesh-bg{opacity:.65;width:100%;height:100vh}.site-header{top:var(--space-6);left:var(--space-6)}.auth-page{padding-top:100px}.auth-card{box-shadow:none;background:0 0;border:none;border-radius:0}.auth-card-body,.auth-card-footer{background:0 0;padding-left:0;padding-right:0}.auth-card-footer{padding-top:var(--space-4);border-top:none}}.navbar{-webkit-backdrop-filter:blur(16px);z-index:100;background:#ffffffb3;border-bottom:1px solid #0000000d;justify-content:center;align-items:center;width:100%;display:flex;position:fixed;top:0;left:0;right:0}.navbar-container{justify-content:space-between;align-items:center;width:100%;max-width:1200px;padding:.75rem 1.5rem;display:flex}.navbar-links{align-items:center;gap:var(--space-6);display:flex}.nav-link{color:var(--color-text-secondary);font-size:14px;font-weight:500;text-decoration:none;transition:color .2s}.nav-link:hover{color:var(--color-text-main)}.nav-login{color:var(--color-text-main);font-weight:600}.navbar .btn-primary{width:auto;height:38px;padding:0 16px;font-size:14px}.landing-main{z-index:10;padding-top:80px;position:relative}.hero-section{max-width:1200px;padding:2rem var(--space-6) 8rem;justify-content:space-between;align-items:center;gap:6rem;min-height:calc(100vh - 80px);margin:0 auto;display:flex}.hero-content{flex:1;max-width:580px}.badge{color:var(--color-primary);margin-bottom:var(--space-5);background:linear-gradient(135deg,#2563eb1a 0%,#0ea5e91a 100%);border:1px solid #2563eb33;border-radius:100px;align-items:center;gap:8px;padding:6px 16px;font-size:13px;font-weight:700;display:inline-flex;box-shadow:0 2px 8px #2563eb0d}.hero-title{letter-spacing:-.04em;color:var(--color-text-main);margin:0 0 var(--space-5) 0;font-size:2.75rem;font-weight:800;line-height:1.05}.text-gradient{background:linear-gradient(135deg, var(--color-primary) 0%, #0ea5e9 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;padding-right:.1em;display:inline-block}.hero-subtitle{color:var(--color-text-secondary);margin:0 0 var(--space-8) 0;max-width:90%;font-size:1.25rem;line-height:1.6}.hero-actions{gap:var(--space-4);display:flex}.hero-actions .btn-primary{border-radius:var(--radius-md);width:auto;height:52px;padding:0 28px;font-size:16px;transition:all .2s;box-shadow:0 4px 14px #2563eb4d}.hero-actions .btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px #2563eb66}.hero-actions .btn-social{border:1px solid var(--color-border);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#fffc;width:auto;height:52px;margin-bottom:0;padding:0 28px;font-size:16px;transition:all .2s}.hero-actions .btn-social:hover{border-color:var(--color-border-light);box-shadow:var(--shadow-md);background:#fff;transform:translateY(-2px)}.hero-graphic{flex:1;justify-content:center;display:flex;position:relative}.hero-graphic:before{content:"";z-index:-1;background:radial-gradient(circle,#2563eb26 0%,#0000 70%);width:120%;height:120%;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.preview-card{-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);background:#fffffff2;border:1px solid #fffc;border-radius:16px;width:100%;max-width:480px;padding:32px;transition:transform .5s cubic-bezier(.4,0,.2,1);transform:perspective(1000px)rotateY(-4deg)rotateX(2deg);box-shadow:0 50px 100px -20px #0f172a26,0 30px 60px -30px #0f172a1a,inset 0 0 0 1px #0f172a0d}.preview-card:hover{transform:perspective(1000px)rotateY(0)rotateX(0)translateY(-8px)}.preview-header{margin-bottom:var(--space-4);padding-bottom:var(--space-3);border-bottom:1px solid #0f172a0f;justify-content:space-between;display:flex}.preview-label{color:var(--color-primary);text-transform:uppercase;letter-spacing:.1em;font-size:11px;font-weight:800}.preview-subject{color:var(--color-text-muted);background:var(--color-surface-muted);border-radius:100px;padding:4px 10px;font-size:12px;font-weight:600}.preview-q{color:var(--color-text-main);margin:0 0 var(--space-4) 0;font-size:16px;font-weight:700;line-height:1.4}.preview-options{gap:var(--space-3);flex-direction:column;display:flex}.preview-opt{align-items:center;gap:var(--space-3);background:#fff;border:1px solid #0f172a14;border-radius:10px;padding:12px 16px;font-size:14px;font-weight:500;display:flex;box-shadow:0 2px 4px #0f172a05}.opt-badge{background:var(--color-surface-muted);width:24px;height:24px;color:var(--color-text-muted);border:1px solid #0f172a0d;border-radius:6px;justify-content:center;align-items:center;font-size:11px;font-weight:800;display:flex}.preview-opt.correct{color:#166534;background:#22c55e0d;border:1px solid #22c55e4d}.preview-opt.correct .opt-badge{color:#fff;background:#22c55e;border:none}.preview-opt.wrong{color:#991b1b;background:#ef44440d;border:1px solid #ef44444d}.preview-opt.wrong .opt-badge{color:#fff;background:#ef4444;border:none}.preview-opt.disabled{opacity:.4}.opt-icon{margin-left:auto}.preview-explanation{margin-top:var(--space-5);color:#166534;background:linear-gradient(#22c55e14 0%,#22c55e08 100%);border:1px solid #22c55e33;border-radius:12px;padding:16px;font-size:13px;line-height:1.6}.content-section{padding:8rem var(--space-6);position:relative}.bg-white{z-index:1;background:#fff;position:relative}.bg-subtle{background:#f8fafc;border-top:1px solid #0f172a0d;border-bottom:1px solid #0f172a0d}.section-container{max-width:1100px;margin:0 auto}.text-center{text-align:center}.max-w-lg{max-width:680px;margin-left:auto;margin-right:auto}.section-tag{color:var(--color-primary);text-transform:uppercase;letter-spacing:.1em;margin-bottom:var(--space-3);font-size:12px;font-weight:800;display:block}.section-title{letter-spacing:-.03em;margin:0 0 var(--space-5) 0;color:var(--color-text-main);font-size:3rem;font-weight:800}.section-desc{color:var(--color-text-secondary);margin:0 0 5rem;font-size:1.25rem;line-height:1.7}.grid-3{gap:var(--space-6);grid-template-columns:repeat(3,1fr);display:grid}.feature-card{text-align:left;border:1px solid var(--color-border);border-radius:var(--radius-xl,16px);box-shadow:var(--shadow-sm);background:#fff;padding:32px;transition:all .2s;position:relative}.feature-card:hover{border-color:#0f172a26;transform:translateY(-2px);box-shadow:0 12px 24px -8px #0f172a14}.feature-card h3{margin:0 0 var(--space-3) 0;color:var(--color-text-main);letter-spacing:-.01em;font-size:1.125rem;font-weight:700}.feature-card p{color:var(--color-text-secondary);margin:0;font-size:.9375rem;line-height:1.6}.features-list{grid-template-columns:repeat(2,1fr);gap:1.5rem 4rem;max-width:900px;margin:0 auto;padding:0;list-style:none;display:grid}.feature-item{color:var(--color-text-secondary);padding-left:1.5rem;font-size:1.05rem;line-height:1.6;position:relative}.feature-item:before{content:"•";color:var(--color-text-muted);font-size:1.25rem;position:absolute;top:-2px;left:0}.cta-section{padding:8rem var(--space-6);text-align:center;background:#0f172a;position:relative;overflow:hidden}.cta-section:before{content:"";pointer-events:none;background:radial-gradient(circle,#2563eb26,#0000 60%);width:200%;height:200%;position:absolute;top:-50%;left:-50%}.cta-container{z-index:2;max-width:600px;margin:0 auto;position:relative}.cta-container h2{letter-spacing:-.03em;color:#fff;margin:0 0 var(--space-4) 0;font-size:3rem;font-weight:800}.cta-container p{color:#ffffffb3;margin:0 0 3rem;font-size:1.25rem;line-height:1.6}.cta-container .btn-primary{color:#0f172a;background:#fff;width:auto;height:56px;margin:0 auto;padding:0 32px;font-size:16px;box-shadow:0 8px 24px #0003}.cta-container .btn-primary:hover{background:#f8fafc;transform:translateY(-2px)}.site-footer{color:#ffffff80;padding:4rem var(--space-6);background:#020617;border-top:1px solid #ffffff0d}.footer-container{justify-content:space-between;align-items:center;gap:var(--space-6);flex-wrap:wrap;max-width:1200px;margin:0 auto;display:flex}.footer-brand{align-items:center;gap:12px;display:flex}.footer-name{color:#fff;font-size:15px;font-weight:700}.footer-links{gap:32px;display:flex}.footer-links a{color:#fff9;font-size:14px;font-weight:500;text-decoration:none;transition:color .2s}.footer-links a:hover{color:#fff}.footer-copyright{font-size:13px}@media (width<=768px){.hero-section{text-align:center;flex-direction:column;gap:4rem;padding-top:2rem}.hero-actions{justify-content:center}.hero-title{font-size:2.125rem}.preview-card{transform:none!important}.grid-3{grid-template-columns:1fr}.features-list{grid-template-columns:1fr;gap:1.5rem}}.top-actions-status{align-items:center;gap:12px;display:flex}.btn-status-icon{color:var(--color-text-muted);cursor:pointer;background:0 0;border:none;border-radius:6px;justify-content:center;align-items:center;padding:6px;transition:all .2s;display:flex}.btn-status-icon:hover{color:var(--color-text-main);background:#0000000d}.status-card-inner{width:100%;max-width:440px}.user-profile-header{align-items:center;gap:1rem;margin-bottom:2rem;display:flex}.user-avatar-circle{color:#2563eb;background:linear-gradient(135deg,#e0e7ff 0%,#dbeafe 100%);border-radius:50%;justify-content:center;align-items:center;width:48px;height:48px;font-size:1.25rem;font-weight:700;display:flex}.sub-info-box{border:1px solid var(--color-border);background:#fafafa;border-radius:12px;margin-bottom:1.5rem;padding:1.25rem}.btn-dashboard-go{background:var(--color-primary);color:#fff;cursor:pointer;border:none;border-radius:8px;justify-content:space-between;align-items:center;width:100%;margin-bottom:.75rem;padding:.875rem 1.25rem;font-size:.875rem;font-weight:500;text-decoration:none;transition:background .2s;display:flex}.btn-dashboard-go:hover{background:var(--color-primary-hover)}.btn-extend-sub{text-align:center;width:100%;color:var(--color-text-main);border:1px solid var(--color-border);cursor:pointer;background:#fff;border-radius:8px;padding:.875rem 1.25rem;font-size:.875rem;font-weight:500;transition:all .2s;display:block}.btn-extend-sub:hover{background:#fafafa}.manage-billing-link{text-align:center;color:var(--color-text-muted);margin-top:1.25rem;font-size:.8125rem;font-weight:500;text-decoration:underline;display:block}.manage-billing-link:hover{color:var(--color-text-main)}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-ordinal{syntax:"*";inherits:false}@property --tw-slashed-zero{syntax:"*";inherits:false}@property --tw-numeric-figure{syntax:"*";inherits:false}@property --tw-numeric-spacing{syntax:"*";inherits:false}@property --tw-numeric-fraction{syntax:"*";inherits:false}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}@property --tw-backdrop-blur{syntax:"*";inherits:false}@property --tw-backdrop-brightness{syntax:"*";inherits:false}@property --tw-backdrop-contrast{syntax:"*";inherits:false}@property --tw-backdrop-grayscale{syntax:"*";inherits:false}@property --tw-backdrop-hue-rotate{syntax:"*";inherits:false}@property --tw-backdrop-invert{syntax:"*";inherits:false}@property --tw-backdrop-opacity{syntax:"*";inherits:false}@property --tw-backdrop-saturate{syntax:"*";inherits:false}@property --tw-backdrop-sepia{syntax:"*";inherits:false}@property --tw-ease{syntax:"*";inherits:false}@keyframes spin{to{transform:rotate(360deg)}}@keyframes pulse{50%{opacity:.5}}