/* ========================================
   QueStudy — Design System v6
   ======================================== */
:root {
  --qs-primary: #2563EB;
  --qs-primary-dark: #1D4ED8;
  --qs-primary-darker: #1E40AF;
  --qs-primary-light: #60A5FA;
  --qs-primary-50: #EFF6FF;
  --qs-primary-100: #DBEAFE;
  --qs-primary-200: #BFDBFE;
  --qs-primary-300: #93C5FD;
  --qs-secondary: #10B981;
  --qs-secondary-dark: #059669;
  --qs-secondary-50: #ECFDF5;
  --qs-accent: #F59E0B;
  --qs-accent-dark: #D97706;
  --qs-accent-50: #FFFBEB;
  --qs-dark: #0F172A;
  --qs-dark-light: #1E293B;
  --qs-text: #1E293B;
  --qs-text-light: #64748B;
  --qs-text-lighter: #94A3B8;
  --qs-bg: #F8FAFC;
  --qs-bg-white: #FFFFFF;
  --qs-border: #E2E8F0;
  --qs-border-light: #F1F5F9;
  --qs-shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --qs-shadow: 0 1px 3px rgba(0,0,0,0.06),0 1px 2px rgba(0,0,0,0.04);
  --qs-shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07),0 2px 4px -1px rgba(0,0,0,0.04);
  --qs-shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08),0 4px 6px -2px rgba(0,0,0,0.04);
  --qs-shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.08),0 10px 10px -5px rgba(0,0,0,0.04);
  --qs-shadow-glow: 0 0 20px rgba(37,99,235,0.15);
  --qs-radius-sm: 6px;
  --qs-radius: 8px;
  --qs-radius-md: 12px;
  --qs-radius-lg: 16px;
  --qs-radius-xl: 24px;
  --qs-radius-full: 999px;
  --qs-transition: 0.2s cubic-bezier(0.4,0,0.2,1);
  --qs-transition-slow: 0.35s cubic-bezier(0.4,0,0.2,1);
  --qs-transition-bounce: 0.5s cubic-bezier(0.34,1.56,0.64,1);
  --qs-font: 'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  --qs-container: 1280px;
  --qs-container-narrow: 800px;
  --qs-gray-50: #F8FAFC;
  --qs-gray-100: #F1F5F9;
  --qs-gray-200: #E2E8F0;
  --qs-gray-300: #CBD5E1;
  --qs-gray-400: #94A3B8;
  --qs-gray-500: #64748B;
  --qs-gray-600: #475569;
  --qs-gray-700: #334155;
  --qs-gray-800: #1E293B;
  --qs-gray-900: #0F172A;
  --qs-white: #FFFFFF;
  --qs-bg-card: #FFFFFF;
  --qs-success: #10B981;
  --qs-success-light: #A7F3D0;
  --qs-success-bg: #ECFDF5;
  --qs-error: #EF4444;
  --qs-error-light: #FECACA;
  --qs-error-bg: #FEF2F2;
  --qs-info: #2563EB;
  --qs-info-light: #BFDBFE;
  --qs-info-bg: #EFF6FF;
  --qs-warning: #F59E0B;
  --qs-warning-light: #FDE68A;
  --qs-warning-bg: #FFFBEB;
}
html{scroll-behavior:smooth}
*,*::before,*::after{box-sizing:border-box}
body{font-family:var(--qs-font);font-size:var(--qs-body-font-size,1rem);line-height:var(--qs-line-height,1.6);color:var(--qs-text);background:var(--qs-bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;margin:0;overflow-x:hidden}
::selection{background:var(--qs-primary-200);color:var(--qs-primary-darker)}
:focus-visible{outline:2px solid var(--qs-primary);outline-offset:2px;border-radius:4px}
a{color:var(--qs-primary);text-decoration:none;transition:color var(--qs-transition)}
a:hover{color:var(--qs-primary-dark)}
img{max-width:100%;height:auto;display:block}
.qs-container{max-width:var(--qs-container);margin:0 auto;padding:0 24px}
.qs-container-narrow{max-width:var(--qs-container-narrow);margin:0 auto;padding:0 24px}
.screen-reader-text{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-link{position:absolute;top:-100%;left:50%;transform:translateX(-50%);background:var(--qs-primary);color:#fff;padding:8px 24px;z-index:100000;border-radius:0 0 var(--qs-radius) var(--qs-radius);font-weight:600;transition:top var(--qs-transition-slow)}
.skip-link:focus{top:0;color:#fff}
.qs-main,.qs-front-page,.qs-page{min-height:50vh}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:var(--qs-gray-100)}
::-webkit-scrollbar-thumb{background:var(--qs-gray-300);border-radius:var(--qs-radius-full)}
::-webkit-scrollbar-thumb:hover{background:var(--qs-gray-400)}

/* ===== SECTION HEADERS ===== */
.qs-section-header{text-align:center;max-width:700px;margin:0 auto 48px}
.qs-section-badge{display:inline-flex;align-items:center;padding:4px 14px;font-size:.8125rem;font-weight:600;color:var(--qs-primary);background:var(--qs-primary-50);border-radius:var(--qs-radius-full);margin-bottom:16px;letter-spacing:.02em}
.qs-section-title{font-size:clamp(1.75rem,3vw,2.5rem);font-weight:var(--qs-heading-weight,800);color:var(--qs-dark);line-height:1.15;margin:0 0 16px;text-align:center;letter-spacing:-.02em}
.qs-section-desc{font-size:clamp(1rem,1.2vw,1.125rem);color:var(--qs-text-light);line-height:1.7;margin:0;text-align:center}

/* ===== BUTTONS ===== */
.qs-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-family:var(--qs-font);font-weight:600;text-decoration:none;border:2px solid transparent;border-radius:var(--qs-radius);cursor:pointer;transition:all var(--qs-transition);line-height:1.2;white-space:nowrap;user-select:none;position:relative;overflow:hidden}
.qs-btn::after{content:'';position:absolute;inset:0;background:linear-gradient(135deg,transparent 40%,rgba(255,255,255,0.08) 100%);pointer-events:none}
.qs-btn:focus-visible{outline:2px solid var(--qs-primary);outline-offset:2px}
.qs-btn:disabled{opacity:.5;cursor:not-allowed;pointer-events:none}
.qs-btn-sm{padding:6px 14px;font-size:.8125rem;border-radius:var(--qs-radius-sm)}
.qs-btn-md{padding:10px 20px;font-size:.875rem}
.qs-btn-lg{padding:14px 28px;font-size:1rem;border-radius:var(--qs-radius-md)}
.qs-btn-xl{padding:18px 36px;font-size:1.125rem;border-radius:var(--qs-radius-md)}
.qs-btn-full{width:100%;justify-content:center}
.qs-btn-primary{background:var(--qs-primary);color:#fff;border-color:var(--qs-primary)}
.qs-btn-primary:hover{background:var(--qs-primary-dark);border-color:var(--qs-primary-dark);transform:translateY(-2px);box-shadow:0 4px 14px rgba(37,99,235,0.35)}
.qs-btn-primary:active{transform:translateY(0)}
.qs-btn-outline{background:transparent;color:var(--qs-primary);border-color:var(--qs-primary)}
.qs-btn-outline:hover{background:var(--qs-primary);color:#fff;transform:translateY(-2px);box-shadow:0 4px 14px rgba(37,99,235,0.25)}
.qs-btn-outline:active{transform:translateY(0)}
.qs-btn-ghost{background:transparent;color:var(--qs-text-light);border-color:transparent}
.qs-btn-ghost:hover{background:var(--qs-primary-50);color:var(--qs-primary)}
.qs-btn-text{background:transparent;color:var(--qs-text-light);border-color:transparent;font-weight:500}
.qs-btn-text:hover{color:var(--qs-primary)}
.qs-btn-white{background:#fff;color:var(--qs-primary);border-color:#fff}
.qs-btn-white:hover{background:rgba(255,255,255,0.92);transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,0.12)}
.qs-btn-ghost-white{background:rgba(255,255,255,0.1);color:#fff;border-color:rgba(255,255,255,0.25)}
.qs-btn-ghost-white:hover{background:rgba(255,255,255,0.18);border-color:#fff;transform:translateY(-2px)}
.qs-btn-glow{position:relative}
.qs-btn-glow::before{content:'';position:absolute;inset:-4px;border-radius:inherit;background:linear-gradient(135deg,var(--qs-primary),var(--qs-primary-light));opacity:0;z-index:-1;filter:blur(12px);transition:opacity var(--qs-transition-slow)}
.qs-btn-glow:hover::before{opacity:0.45}
.qs-btn-glow:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(37,99,235,0.3)}

/* ===== HEADER ===== */
.qs-header{position:sticky;top:0;z-index:1000;background:var(--qs-header-bg,rgba(255,255,255,0.92));border-bottom:1px solid var(--qs-border);backdrop-filter:blur(16px) saturate(180%);-webkit-backdrop-filter:blur(16px) saturate(180%)}
.qs-header-static{position:relative}
.qs-header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.qs-header-left{display:flex;align-items:center;gap:32px;flex:1}
.qs-mobile-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px;border-radius:var(--qs-radius-sm)}
.qs-hamburger-line{width:22px;height:2px;background:var(--qs-dark);border-radius:var(--qs-radius-full);transition:all var(--qs-transition)}
.qs-logo{display:flex;align-items:center;flex-shrink:0}
.qs-logo-link{display:flex;align-items:center;gap:10px;text-decoration:none}
.qs-logo-text{font-size:1.25rem;font-weight:800;color:var(--qs-dark);letter-spacing:-.03em}
.qs-nav{display:flex;align-items:center}
.qs-nav-list,.qs-nav ul{display:flex;align-items:center;gap:2px;list-style:none;margin:0;padding:0}
.qs-nav-list li a,.qs-nav ul li a{display:block;padding:8px 14px;font-size:.875rem;font-weight:500;color:var(--qs-header-text,var(--qs-text-light));border-radius:var(--qs-radius);transition:all var(--qs-transition);text-decoration:none;position:relative}
.qs-nav-list li a:hover,.qs-nav ul li a:hover{color:var(--qs-primary);background:var(--qs-primary-50)}
.qs-nav-list li.current-menu-item a,.qs-nav ul li.current-menu-item a{color:var(--qs-primary);background:var(--qs-primary-50);font-weight:600}
.qs-nav-list li.current-menu-item a::after,.qs-nav ul li.current-menu-item a::after{content:'';position:absolute;bottom:-1px;left:50%;transform:translateX(-50%);width:20px;height:2px;background:var(--qs-primary);border-radius:var(--qs-radius-full)}
.qs-header-right{display:flex;align-items:center;gap:8px;flex-shrink:0}
.qs-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,0.4);backdrop-filter:blur(4px);z-index:998}
.qs-overlay.active{display:block}
.qs-mobile-toggle.active .qs-hamburger-line:nth-child(1){transform:translateY(7px) rotate(45deg)}
.qs-mobile-toggle.active .qs-hamburger-line:nth-child(2){opacity:0}
.qs-mobile-toggle.active .qs-hamburger-line:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ===== MOBILE BOTTOM NAV ===== */
.qs-mobile-nav{display:none;position:fixed;bottom:calc(12px + env(safe-area-inset-bottom,0px));left:14px;right:14px;z-index:1400;height:64px;padding:0 8px;border-radius:26px;justify-content:space-between;align-items:center;background:rgba(255,255,255,0.88);backdrop-filter:blur(20px) saturate(1.6);-webkit-backdrop-filter:blur(20px) saturate(1.6);box-shadow:0 8px 32px -6px rgba(15,23,42,0.18),0 2px 8px rgba(15,23,42,0.06),inset 0 1px 0 rgba(255,255,255,0.6);border:1px solid var(--qs-border-light)}
.qs-mobile-nav-item{position:relative;display:flex;flex:0 1 56px;min-width:44px;height:52px;flex-direction:column;align-items:center;justify-content:center;gap:3px;font-size:.7rem;color:var(--qs-text-lighter);text-decoration:none;padding:0;border:none;background:none;cursor:pointer;border-radius:16px;transition:color var(--qs-transition),transform .2s ease;-webkit-tap-highlight-color:transparent}
.qs-mobile-nav-item:hover,.qs-mobile-nav-item.active{color:var(--qs-primary)}
.qs-mobile-nav-pill{position:absolute;top:6px;left:50%;width:46px;height:30px;border-radius:12px;background:var(--qs-primary);opacity:0;transform:translateX(-50%) scale(.7);transition:opacity .25s ease,transform .25s cubic-bezier(.34,1.56,.64,1);pointer-events:none;z-index:0}
.qs-mobile-nav-item svg{position:relative;z-index:1;width:22px;height:22px;transition:transform .25s cubic-bezier(.34,1.56,.64,1)}
.qs-mobile-nav-label{position:relative;z-index:1}
.qs-mobile-nav-item.active .qs-mobile-nav-pill{opacity:1;transform:translateX(-50%) scale(1)}
.qs-mobile-nav-item:active svg{transform:scale(.88)}
.qs-mobile-nav-fab{position:relative;top:-26px;flex-shrink:0;display:grid;place-items:center;width:58px;height:58px;border-radius:20px;background:linear-gradient(135deg,#2563EB,#7C3AED);color:#fff;box-shadow:0 12px 26px -8px rgba(37,99,235,.65);text-decoration:none;border:4px solid #fff;transition:transform .25s cubic-bezier(.34,1.56,.64,1),box-shadow .25s ease}
.qs-mobile-nav-fab svg{width:26px;height:26px}
.qs-mobile-nav-fab:active{transform:scale(.92)}

/* ===== AUTH PAGES ===== */
.qs-auth-page{min-height:100vh;display:flex}
.qs-auth-wrapper{display:flex;width:100%;min-height:calc(100vh - 72px)}
.qs-auth-left{width:50%;background:linear-gradient(135deg,#EFF6FF,#DBEAFE 50%,#BFDBFE);display:flex;align-items:center;justify-content:center;padding:60px;position:relative;overflow:hidden}
.qs-auth-left::before{content:'';position:absolute;width:600px;height:600px;border-radius:50%;background:rgba(37,99,235,0.06);top:-200px;right:-200px;pointer-events:none}
.qs-auth-left::after{content:'';position:absolute;width:400px;height:400px;border-radius:50%;background:rgba(16,185,129,0.04);bottom:-100px;left:-100px;pointer-events:none}
.qs-auth-left-content{width:100%;max-width:480px;position:relative;z-index:1}
.qs-auth-badge{display:inline-flex;align-items:center;padding:4px 14px;font-size:.8125rem;font-weight:600;color:var(--qs-primary);background:rgba(37,99,235,0.1);border-radius:var(--qs-radius-full);margin-bottom:20px}
.qs-auth-headline{font-size:clamp(1.75rem,2.5vw,2.25rem);font-weight:800;color:var(--qs-dark);line-height:1.15;margin:0 0 12px}
.qs-auth-subtitle{font-size:1rem;color:var(--qs-text-light);line-height:1.7;margin:0 0 32px}
.qs-auth-benefits{display:flex;flex-direction:column;gap:12px;margin-bottom:32px}
.qs-auth-benefit{display:flex;align-items:center;gap:14px;padding:14px 18px;background:rgba(255,255,255,0.85);border-radius:var(--qs-radius-md);box-shadow:var(--qs-shadow-sm);border:1px solid rgba(255,255,255,0.9);backdrop-filter:blur(4px)}
.qs-auth-benefit-icon{width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.qs-icon-blue{background:rgba(37,99,235,0.1);color:var(--qs-primary)}
.qs-icon-green{background:rgba(16,185,129,0.1);color:var(--qs-secondary)}
.qs-icon-amber{background:rgba(245,158,11,0.1);color:var(--qs-accent)}
.qs-icon-purple{background:rgba(139,92,246,0.1);color:#8B5CF6}
.qs-auth-benefit strong{display:block;font-size:.9375rem;color:var(--qs-dark);margin-bottom:2px}
.qs-auth-benefit span{font-size:.8125rem;color:var(--qs-text-light)}
.qs-auth-testimonial{margin-top:12px;padding:20px 24px;background:rgba(255,255,255,0.7);border-radius:var(--qs-radius-md);border:1px solid rgba(255,255,255,0.8);backdrop-filter:blur(4px)}
.qs-auth-testimonial p{font-size:.875rem;color:var(--qs-text);font-style:italic;margin:12px 0 6px;line-height:1.6}
.qs-auth-testimonial-author{font-size:.75rem;color:var(--qs-text-light)}
.qs-auth-avatars{display:flex}
.qs-avatar{width:36px;height:36px;border-radius:50%;background:var(--qs-primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:700;border:2px solid #fff;margin-right:-8px;transition:transform var(--qs-transition)}
.qs-avatar:hover{transform:translateY(-2px)}
.qs-avatar:last-child{background:var(--qs-text-lighter)}
.qs-auth-right{width:50%;display:flex;align-items:center;justify-content:center;padding:60px;background:#fff}
.qs-auth-card{width:100%;max-width:420px}
.qs-auth-notice{padding:12px 16px;border-radius:var(--qs-radius);font-size:.875rem;line-height:1.5;margin-bottom:20px;border:1px solid}
.qs-auth-notice a{font-weight:600;text-decoration:underline}
.qs-auth-notice-sent{background:#ecfdf5;border-color:#a7f3d0;color:#065f46}
.qs-auth-notice-invalid,.qs-auth-notice-notfound{background:#fef2f2;border-color:#fecaca;color:#991b1b}
.qs-auth-card-header{text-align:center;margin-bottom:28px}
.qs-auth-logo{display:flex;align-items:center;justify-content:center;gap:10px;margin-bottom:20px}
.qs-auth-logo span{font-size:1.25rem;font-weight:800;color:var(--qs-dark)}
.qs-auth-card-header h2{font-size:1.5rem;font-weight:700;color:var(--qs-dark);margin:0 0 6px}
.qs-auth-card-header p{color:var(--qs-text-light);margin:0;font-size:.875rem}
.qs-auth-card .login-username,.qs-auth-card .login-password,
.qs-auth-card .questudy-register-form label,
.qs-auth-card .questudy-auth-wrap form label{display:flex;flex-direction:column;gap:6px;width:100%}
.qs-auth-card label,.qs-auth-card .questudy-auth-wrap form label{font-size:.875rem;font-weight:600;color:var(--qs-dark)}
.qs-auth-card .input,.qs-auth-card input[type="text"],.qs-auth-card input[type="email"],.qs-auth-card input[type="password"],.qs-input,.qs-auth-card .questudy-auth-wrap form input[type="text"],.qs-auth-card .questudy-auth-wrap form input[type="email"],.qs-auth-card .questudy-auth-wrap form input[type="password"],.qs-auth-card .questudy-register-form input{width:100%;padding:12px 16px;border:1.5px solid var(--qs-border);border-radius:var(--qs-radius);font-size:.9375rem;font-family:var(--qs-font);transition:all var(--qs-transition);background:#fff;color:var(--qs-dark);outline:none}
.qs-auth-card .input:focus,.qs-auth-card input[type="text"]:focus,.qs-auth-card input[type="email"]:focus,.qs-auth-card input[type="password"]:focus,.qs-input:focus,.qs-auth-card .questudy-auth-wrap form input:focus,.qs-auth-card .questudy-register-form input:focus{border-color:var(--qs-primary);box-shadow:0 0 0 3px rgba(37,99,235,0.1)}
.qs-auth-card .forgetmenot{display:flex;align-items:center;gap:8px;margin:4px 0}
.qs-auth-card .forgetmenot label{font-size:.8125rem;font-weight:400;color:var(--qs-text-light);cursor:pointer}
.qs-auth-card .forgetmenot input[type="checkbox"]{width:16px;height:16px;accent-color:var(--qs-primary);cursor:pointer}
.qs-auth-card .submit{display:flex;flex-direction:column;gap:8px;margin-top:4px}
.qs-auth-card input[type="submit"],.qs-auth-card .questudy-auth-wrap form button[type="submit"],.qs-auth-card .questudy-register-form button{width:100%;padding:14px;font-size:1rem;font-weight:600;border-radius:var(--qs-radius-md);border:none;cursor:pointer;background:var(--qs-primary);color:#fff;transition:all var(--qs-transition);margin-top:4px}
.qs-auth-card input[type="submit"]:hover,.qs-auth-card .questudy-auth-wrap form button[type="submit"]:hover,.qs-auth-card .questudy-register-form button:hover{background:var(--qs-primary-dark);transform:translateY(-1px);box-shadow:0 4px 12px rgba(37,99,235,0.3)}
.qs-auth-card #loginform,.qs-auth-card .questudy-register-form,.qs-auth-card .questudy-auth-wrap form{display:flex;flex-direction:column;gap:16px;margin:0}
.qs-auth-divider{display:flex;align-items:center;gap:16px;margin:24px 0;color:var(--qs-text-lighter);font-size:.8125rem}
.qs-auth-divider::before,.qs-auth-divider::after{content:'';flex:1;height:1px;background:var(--qs-border)}
.qs-auth-social{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:24px}
.qs-social-btn{flex:1 1 calc(50% - 6px);min-width:0;display:flex;align-items:center;justify-content:center;gap:8px;padding:12px;border:1.5px solid var(--qs-border);border-radius:var(--qs-radius);background:#fff;cursor:pointer;font-size:.875rem;font-weight:500;font-family:inherit;color:var(--qs-text);text-decoration:none;transition:all var(--qs-transition)}
.qs-social-btn:hover{border-color:var(--qs-text-lighter);background:var(--qs-gray-50)}
.qs-whatsapp-panel{display:none;margin:-8px 0 24px;padding:16px;border:1.5px solid var(--qs-border);border-radius:var(--qs-radius);background:#f8fafc}
.qs-whatsapp-panel.open{display:block}
.qs-whatsapp-panel h4{margin:0 0 4px;font-size:.9375rem;font-weight:600;color:var(--qs-dark)}
.qs-whatsapp-panel p{margin:0 0 12px;font-size:.8125rem;color:var(--qs-text-light)}
.qs-whatsapp-field{display:flex;gap:8px;margin-bottom:10px}
.qs-whatsapp-field input{flex:1;min-width:0;padding:10px 12px;border:1.5px solid var(--qs-border);border-radius:var(--qs-radius);font-size:.875rem;font-family:inherit;background:#fff;color:var(--qs-dark);outline:none}
.qs-whatsapp-field input:focus{border-color:var(--qs-primary);box-shadow:0 0 0 3px rgba(37,99,235,0.1)}
.qs-whatsapp-field .qs-btn{flex:0 0 auto;padding:10px 14px;font-size:.8125rem;border:none;border-radius:var(--qs-radius);background:var(--qs-primary);color:#fff;font-weight:600;cursor:pointer;transition:background var(--qs-transition)}
.qs-whatsapp-field .qs-btn:hover{background:var(--qs-primary-dark)}
.qs-whatsapp-field .qs-btn:disabled{opacity:.6;cursor:not-allowed}
.qs-whatsapp-msg{margin:0 0 10px;font-size:.8125rem;color:var(--qs-text-light)}
.qs-whatsapp-msg.error{color:#dc2626}
.qs-whatsapp-msg.success{color:#16a34a}
.qs-whatsapp-back{background:none;border:none;padding:0;font-size:.8125rem;color:var(--qs-text-lighter);cursor:pointer;text-decoration:underline}
.qs-whatsapp-back:hover{color:var(--qs-text-light)}
.qs-auth-footer{text-align:center;font-size:.9375rem;color:var(--qs-text-light);margin-top:4px}
.qs-auth-footer a{font-weight:600;color:var(--qs-primary)}
.qs-forgot-password{display:block;text-align:center;margin-top:12px;font-size:.8125rem;color:var(--qs-text-light)}
.qs-auth-terms{text-align:center;font-size:.75rem;color:var(--qs-text-lighter);margin-top:12px}
.qs-auth-terms a{color:var(--qs-text-light);text-decoration:underline}
.qs-auth-card .questudy-auth-link{text-align:center;font-size:.9375rem;color:var(--qs-text-light);margin-top:16px}
.qs-auth-card .questudy-auth-link a{color:var(--qs-primary);font-weight:600}
.qs-auth-card .questudy-auth-header,.qs-auth-card .questudy-auth-wrap .questudy-auth-header{display:none}
.qs-auth-card .questudy-auth-wrap{background:none;padding:0;border:none;box-shadow:none}

/* ===== AUTH SHELL (topbar-only, no sidebar) ===== */
body.qs-auth-shell .qs-app-body{margin-left:0}
body.qs-auth-shell .qs-auth-topbar-brand{display:flex;align-items:center;gap:8px;text-decoration:none}
.qs-auth-topbar-brand span{font-weight:800;font-size:1.1rem;color:var(--qs-app-text);letter-spacing:-.02em}
.qs-auth-topbar-actions{display:flex;align-items:center;gap:12px}
.qs-auth-topbar-link{font-size:.875rem;font-weight:600;color:var(--qs-app-text-soft);text-decoration:none;transition:color var(--qs-transition)}
.qs-auth-topbar-link:hover{color:var(--qs-primary)}

/* Auth forms (forgot / reset password) */
.qs-auth-form{display:flex;flex-direction:column;gap:16px;margin:0}
.qs-auth-field{display:flex;flex-direction:column;gap:6px;width:100%;margin:0}
.qs-auth-field label{font-size:.875rem;font-weight:600;color:var(--qs-dark)}
.qs-auth-notice-error{background:#fef2f2;border-color:#fecaca;color:#991b1b}
.qs-auth-success{text-align:center;padding:16px 0 8px}
.qs-auth-success-icon{width:64px;height:64px;margin:0 auto 16px;border-radius:50%;background:rgba(37,99,235,0.1);color:var(--qs-primary);display:flex;align-items:center;justify-content:center}
.qs-auth-success-icon-green{background:rgba(16,185,129,0.1);color:var(--qs-secondary)}
.qs-auth-success-text{font-size:.9375rem;color:var(--qs-text-light);line-height:1.7;margin:0 0 8px}

/* ===== HERO ===== */
.qs-hero-modern{position:relative;background:linear-gradient(135deg,#F0F7FF,#E8F4FD,#F0F7FF);overflow:hidden;padding:clamp(48px,6vw,100px) 0}
.qs-hero-bg-pattern{position:absolute;inset:0;background-image:radial-gradient(circle at 20% 50%,rgba(37,99,235,0.05) 0,transparent 50%),radial-gradient(circle at 80% 20%,rgba(16,185,129,0.04) 0,transparent 50%),radial-gradient(circle at 40% 80%,rgba(245,158,11,0.03) 0,transparent 50%);pointer-events:none}
.qs-hero-bg-pattern::after{content:'';position:absolute;width:100%;height:100%;top:0;left:0;background:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%232563EB' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");pointer-events:none}
.qs-hero-inner{position:relative;z-index:1}
.qs-hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.qs-hero-text-col{text-align:left}
.qs-pill-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;font-size:.8125rem;font-weight:600;color:var(--qs-primary);background:rgba(37,99,235,0.08);border-radius:var(--qs-radius-full);margin-bottom:24px;border:1px solid rgba(37,99,235,0.12);backdrop-filter:blur(4px)}
.qs-pill-icon{font-size:1rem;line-height:1}
.qs-hero-h1{font-size:clamp(2rem,3.5vw,3.25rem);font-weight:800;color:var(--qs-dark);line-height:1.1;margin:0 0 16px;letter-spacing:-.025em}
.qs-hero-desc{font-size:clamp(1rem,1.2vw,1.125rem);color:var(--qs-text-light);line-height:1.7;margin:0 0 28px;max-width:520px}
.qs-hero-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-bottom:32px}
.qs-hero-actions .qs-btn{font-size:1rem}
.qs-social-proof{display:flex;align-items:center;gap:14px}
.qs-proof-avatars{display:flex;align-items:center}
.qs-proof-avatar{width:38px;height:38px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.7rem;font-weight:700;border:2px solid #fff;margin-right:-10px;transition:transform var(--qs-transition);box-shadow:var(--qs-shadow-sm)}
.qs-proof-avatar:hover{transform:translateY(-3px)}
.qs-proof-text{font-size:.875rem;color:var(--qs-text-light)}
.qs-proof-text strong{color:var(--qs-dark)}
.qs-hero-visual-col{display:flex;align-items:center;justify-content:center}
.qs-hero-illustration-wrap{position:relative;width:100%;max-width:460px}
.qs-hero-main-svg{width:100%;height:auto;display:block;filter:drop-shadow(0 8px 32px rgba(37,99,235,0.12))}

/* Hero floating cards */
.qs-floating-card{display:flex;align-items:center;gap:6px;padding:8px 14px;background:rgba(255,255,255,0.95);border-radius:10px;box-shadow:0 4px 16px rgba(0,0,0,0.08),0 1px 3px rgba(0,0,0,0.04);font-size:.75rem;font-weight:600;color:var(--qs-dark);white-space:nowrap;position:absolute;z-index:2;backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,0.8);transition:all var(--qs-transition-slow)}
.qs-floating-card:hover{transform:translateY(-4px) scale(1.05);box-shadow:0 8px 24px rgba(0,0,0,0.12)}
.qs-floating-card svg{flex-shrink:0;width:16px;height:16px}
.qs-fc-1{top:2%;right:-8%;animation:qs-float 6s ease-in-out infinite}
.qs-fc-2{top:22%;left:-22%;animation:qs-float 8s ease-in-out infinite 1s}
.qs-fc-3{top:48%;right:-10%;animation:qs-float 7s ease-in-out infinite 0.5s}
.qs-fc-4{top:68%;left:-18%;animation:qs-float 9s ease-in-out infinite 2s}
.qs-fc-5{top:35%;left:-28%;animation:qs-float 6.5s ease-in-out infinite 1.5s}
.qs-fc-6{bottom:4%;left:-10%;animation:qs-float 7.5s ease-in-out infinite 0.8s}
@keyframes qs-float{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
@media(max-width:1100px){.qs-floating-card{display:none}}
@media(min-width:1101px){.qs-floating-card{display:flex}}
.qs-countdown-card{position:absolute;bottom:-24px;right:-8px;background:rgba(255,255,255,0.95);border-radius:var(--qs-radius-lg);padding:14px 18px;box-shadow:0 8px 32px rgba(0,0,0,0.1);z-index:3;border:1px solid rgba(255,255,255,0.8);backdrop-filter:blur(8px);min-width:260px;animation:qs-float 5s ease-in-out infinite 0.3s}
.qs-countdown-badge{font-size:.7rem;font-weight:700;color:var(--qs-primary);text-transform:uppercase;letter-spacing:.06em;margin-bottom:8px}
.qs-countdown-display{display:flex;align-items:center;justify-content:center;gap:4px}
.qs-cd-item{text-align:center;min-width:36px}
.qs-cd-num{display:block;font-size:1.375rem;font-weight:800;color:var(--qs-dark);line-height:1.2}
.qs-cd-label{font-size:.6rem;font-weight:500;color:var(--qs-text-lighter);text-transform:uppercase;letter-spacing:.04em}
.qs-cd-sep{font-size:1.375rem;font-weight:700;color:var(--qs-primary);padding-bottom:10px}

/* ===== TRUST BANNER ===== */
.qs-trust-section{padding:40px 0;background:#fff;border-top:1px solid var(--qs-border);border-bottom:1px solid var(--qs-border)}
.qs-trust-heading{text-align:center;font-size:.8125rem;font-weight:600;color:var(--qs-text-lighter);text-transform:uppercase;letter-spacing:.08em;margin:0 0 28px}
.qs-trust-logos{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:clamp(20px,3vw,40px)}
.qs-trust-logo{font-size:1.125rem;color:var(--qs-gray-400);filter:grayscale(1);opacity:.5;transition:all var(--qs-transition-slow);cursor:default}
.qs-trust-logo:hover{filter:grayscale(0);opacity:1;color:var(--qs-dark)}

/* ===== STATS ===== */
.qs-stats-section{padding:clamp(40px,5vw,80px) 0;background:linear-gradient(135deg,var(--qs-primary) 0%,var(--qs-primary-darker) 100%);position:relative;overflow:hidden}
.qs-stats-section::before{content:'';position:absolute;width:800px;height:800px;border-radius:50%;background:rgba(255,255,255,0.03);top:-300px;right:-200px;pointer-events:none}
.qs-stats-section::after{content:'';position:absolute;width:500px;height:500px;border-radius:50%;background:rgba(255,255,255,0.02);bottom:-200px;left:-100px;pointer-events:none}
.qs-stats-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;position:relative;z-index:1;text-align:center}
.qs-stat-card-glass{text-align:center;padding:clamp(20px,2.5vw,32px) clamp(12px,1.5vw,20px);background:rgba(255,255,255,0.08);border-radius:var(--qs-radius-lg);backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,0.1);transition:all var(--qs-transition-slow)}
.qs-stat-card-glass:hover{background:rgba(255,255,255,0.14);transform:translateY(-4px);box-shadow:0 8px 32px rgba(0,0,0,0.1)}
.qs-stat-icon{display:flex;justify-content:center;margin-bottom:12px}
.qs-stat-icon svg{width:28px;height:28px;color:rgba(255,255,255,0.5)}
.qs-stat-number{font-size:clamp(1.75rem,2.5vw,2.5rem);font-weight:800;color:#fff;line-height:1}
.qs-stat-plus{font-size:1.25rem;font-weight:700;color:rgba(255,255,255,0.6);display:inline-block;vertical-align:super}
.qs-stat-card-glass .qs-stat-label{display:block;font-size:.75rem;color:rgba(255,255,255,0.6);margin-top:8px;line-height:1.4;max-width:140px;margin-left:auto;margin-right:auto}

/* ===== FEATURES ===== */
.qs-features-section{padding:clamp(48px,6vw,100px) 0;background:#fff}
.qs-features-matrix{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}
.qs-feature-card-modern{text-align:center;padding:clamp(24px,2.5vw,36px) clamp(16px,2vw,24px);background:var(--qs-bg);border-radius:var(--qs-radius-md);border:1px solid var(--qs-border);transition:all var(--qs-transition-slow);cursor:default;position:relative;overflow:hidden}
.qs-feature-card-modern::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--qs-primary),var(--qs-primary-light));opacity:0;transition:opacity var(--qs-transition-slow)}
.qs-feature-card-modern:hover::before{opacity:1}
.qs-feature-card-modern:hover{transform:translateY(-6px);box-shadow:var(--qs-shadow-lg);border-color:transparent;background:#fff}
.qs-fc-icon{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;margin:0 auto 16px;transition:all var(--qs-transition-slow)}
.qs-feature-card-modern:hover .qs-fc-icon{transform:scale(1.1)}
.qs-fc-blue{background:rgba(37,99,235,0.1);color:var(--qs-primary)}
.qs-fc-green{background:rgba(16,185,129,0.1);color:var(--qs-secondary)}
.qs-fc-amber{background:rgba(245,158,11,0.1);color:var(--qs-accent)}
.qs-fc-purple{background:rgba(139,92,246,0.1);color:#8B5CF6}
.qs-fc-pink{background:rgba(236,72,153,0.1);color:#EC4899}
.qs-fc-teal{background:rgba(20,184,166,0.1);color:#14B8A6}
.qs-feature-card-modern h4{font-size:.9375rem;font-weight:700;color:var(--qs-dark);margin:0 0 6px;text-align:center}
.qs-feature-card-modern p{font-size:.8125rem;color:var(--qs-text-light);line-height:1.6;margin:0;text-align:center}

/* ===== EXAM BODY PILLS ===== */
.qs-exambody-section{padding:clamp(32px,4vw,60px) 0;background:var(--qs-bg)}
.qs-exam-pills{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.qs-exam-pill{display:inline-flex;align-items:center;padding:8px 20px;border-radius:var(--qs-radius-full);font-size:.8125rem;font-weight:600;cursor:default;transition:all var(--qs-transition);border:1.5px solid transparent}
.qs-exam-pill:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(0,0,0,0.1)}
.qs-pill-blue{background:rgba(37,99,235,0.08);color:var(--qs-primary);border-color:rgba(37,99,235,0.2)}
.qs-pill-blue:hover{background:var(--qs-primary);color:#fff;border-color:var(--qs-primary)}
.qs-pill-green{background:rgba(16,185,129,0.08);color:var(--qs-secondary);border-color:rgba(16,185,129,0.2)}
.qs-pill-green:hover{background:var(--qs-secondary);color:#fff;border-color:var(--qs-secondary)}
.qs-pill-amber{background:rgba(245,158,11,0.08);color:var(--qs-accent);border-color:rgba(245,158,11,0.2)}
.qs-pill-amber:hover{background:var(--qs-accent);color:#fff;border-color:var(--qs-accent)}
.qs-pill-red{background:rgba(239,68,68,0.08);color:#EF4444;border-color:rgba(239,68,68,0.2)}
.qs-pill-red:hover{background:#EF4444;color:#fff;border-color:#EF4444}
.qs-pill-purple{background:rgba(139,92,246,0.08);color:#8B5CF6;border-color:rgba(139,92,246,0.2)}
.qs-pill-purple:hover{background:#8B5CF6;color:#fff;border-color:#8B5CF6}
.qs-pill-teal{background:rgba(20,184,166,0.08);color:#14B8A6;border-color:rgba(20,184,166,0.2)}
.qs-pill-teal:hover{background:#14B8A6;color:#fff;border-color:#14B8A6}

/* ===== HOW IT WORKS ===== */
.qs-how-section{padding:clamp(48px,6vw,100px) 0;background:#fff}
.qs-steps-flow{display:flex;align-items:flex-start;justify-content:center;gap:0;max-width:960px;margin:0 auto}
.qs-step-item{text-align:center;flex:1;max-width:150px;padding:0 6px}
.qs-step-circle{width:56px;height:56px;border-radius:50%;background:linear-gradient(135deg,var(--qs-primary),var(--qs-primary-light));display:flex;align-items:center;justify-content:center;margin:0 auto 14px;box-shadow:0 4px 16px rgba(37,99,235,0.25);transition:all var(--qs-transition-slow);position:relative}
.qs-step-item:hover .qs-step-circle{transform:scale(1.1);box-shadow:0 6px 24px rgba(37,99,235,0.35)}
.qs-step-circle span{font-size:1.25rem;font-weight:800;color:#fff}
.qs-step-item h4{font-size:.875rem;font-weight:700;color:var(--qs-dark);margin:0 0 4px}
.qs-step-item p{font-size:.75rem;color:var(--qs-text-light);line-height:1.4;margin:0}
.qs-step-line{width:48px;height:2px;background:linear-gradient(90deg,var(--qs-gray-300),var(--qs-gray-200));margin-top:28px;flex-shrink:0}

/* ===== AI TOOLS CAROUSEL ===== */
.qs-ai-tools-section{padding:clamp(48px,6vw,100px) 0;background:linear-gradient(135deg,var(--qs-gray-50),var(--qs-primary-50))}
.qs-ai-tools-layout{display:grid;grid-template-columns:340px 1fr;gap:40px;align-items:center}
.qs-ai-tools-sidebar{text-align:left}
.qs-ai-tools-sidebar .qs-section-title{text-align:left;font-size:clamp(1.5rem,2.5vw,2rem)}
.qs-ai-tools-sidebar .qs-section-desc{text-align:left;margin-bottom:24px;font-size:1rem}
.qs-ai-tools-carousel{display:flex;gap:12px;overflow-x:auto;padding:8px 4px 16px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch}
.qs-ai-tools-carousel::-webkit-scrollbar{height:4px}
.qs-ai-tools-carousel::-webkit-scrollbar-track{background:transparent;border-radius:10px}
.qs-ai-tools-carousel::-webkit-scrollbar-thumb{background:var(--qs-primary-200);border-radius:10px}
.qs-ai-tool-card{flex:0 0 160px;padding:24px 16px;background:#fff;border-radius:var(--qs-radius-lg);border:1px solid var(--qs-border);text-align:center;font-size:.8125rem;font-weight:600;color:var(--qs-dark);transition:all var(--qs-transition-slow);scroll-snap-align:start;cursor:default}
.qs-ai-tool-card svg{display:block;margin:0 auto 10px;width:28px;height:28px}
.qs-ai-tool-card:hover{transform:translateY(-6px);box-shadow:var(--qs-shadow-xl);border-color:transparent}

/* ===== TESTIMONIALS ===== */
.qs-testimonials-section{padding:clamp(48px,6vw,100px) 0;background:#fff}
.qs-testimonials-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px;max-width:1024px;margin:0 auto}
.qs-testimonial-card{text-align:left;padding:clamp(20px,2.5vw,32px);background:var(--qs-bg);border-radius:var(--qs-radius-lg);border:1px solid var(--qs-border);transition:all var(--qs-transition-slow);cursor:default;position:relative}
.qs-testimonial-card::after{content:'"';position:absolute;top:16px;right:20px;font-size:4rem;line-height:1;color:var(--qs-primary-200);opacity:0.4;font-weight:800}
.qs-testimonial-card:hover{transform:translateY(-6px);box-shadow:var(--qs-shadow-lg)}
.qs-stars{font-size:1rem;color:var(--qs-accent);letter-spacing:3px;margin-bottom:12px}
.qs-testimonial-text{font-size:.875rem;color:var(--qs-text);line-height:1.7;margin:0 0 16px;font-style:italic;text-align:left}
.qs-testimonial-author{display:flex;align-items:center;gap:10px;padding-top:12px;border-top:1px solid var(--qs-border-light)}
.qs-testimonial-avatar{width:42px;height:42px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:700;color:#fff;flex-shrink:0}
.qs-testimonial-author strong{display:block;font-size:.8125rem;color:var(--qs-dark)}
.qs-testimonial-author span{font-size:.7rem;color:var(--qs-text-light)}

/* ===== PRICING ===== */
.qs-pricing-section{padding:clamp(48px,6vw,100px) 0;background:var(--qs-bg)}
.qs-pricing-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:20px;align-items:start;max-width:1120px;margin:0 auto}
.qs-pricing-card{text-align:center;padding:clamp(24px,2.5vw,36px) clamp(16px,2vw,24px);background:#fff;border-radius:var(--qs-radius-lg);border:1px solid var(--qs-border);transition:all var(--qs-transition-slow);position:relative;overflow:hidden}
.qs-pricing-card:hover{transform:translateY(-6px);box-shadow:var(--qs-shadow-lg)}
.qs-pricing-featured{background:var(--qs-primary);border-color:var(--qs-primary);position:relative;z-index:2;transform:scale(1.03)}
.qs-pricing-featured:hover{transform:scale(1.03) translateY(-6px)}
.qs-pricing-badge{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--qs-accent);color:#fff;padding:4px 16px;border-radius:var(--qs-radius-full);font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em;white-space:nowrap}
.qs-pricing-name{font-size:1rem;font-weight:700;color:var(--qs-dark);margin:0 0 12px}
.qs-pricing-featured .qs-pricing-name{color:#fff}
.qs-pricing-amount{font-size:clamp(1.75rem,2.5vw,2.5rem);font-weight:800;color:var(--qs-dark);margin-bottom:2px;line-height:1}
.qs-pricing-featured .qs-pricing-amount{color:#fff}
.qs-currency{font-size:1.375rem;vertical-align:super;margin-right:2px}
.qs-pricing-period{font-size:.75rem;color:var(--qs-text-light);display:block;margin-bottom:20px}
.qs-pricing-featured .qs-pricing-period{color:rgba(255,255,255,0.7)}
.qs-pricing-features{list-style:none;padding:0;margin:0 0 24px;text-align:left}
.qs-pricing-features li{padding:8px 0;font-size:.8125rem;color:var(--qs-text);border-bottom:1px solid var(--qs-border-light);display:flex;align-items:center;gap:8px}
.qs-pricing-features li::before{content:'✓';color:var(--qs-secondary);font-weight:700}
.qs-pricing-featured .qs-pricing-features li{color:rgba(255,255,255,0.92);border-color:rgba(255,255,255,0.1)}
.qs-pricing-featured .qs-pricing-features li::before{color:var(--qs-accent)}
.qs-pricing-featured .qs-btn-outline{background:rgba(255,255,255,0.1);color:#fff;border-color:rgba(255,255,255,0.3)}
.qs-pricing-featured .qs-btn-outline:hover{background:#fff;color:var(--qs-primary);border-color:#fff}

/* ===== FAQ ===== */
.qs-faq-section{padding:clamp(48px,6vw,100px) 0;background:#fff}
.qs-faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;max-width:860px;margin:0 auto}
.qs-faq-item{background:var(--qs-bg);border-radius:var(--qs-radius-md);border:1px solid var(--qs-border);overflow:hidden;transition:all var(--qs-transition)}
.qs-faq-item:hover{border-color:var(--qs-primary-200);box-shadow:var(--qs-shadow-sm)}
.qs-faq-question{width:100%;display:flex;justify-content:space-between;align-items:center;padding:16px 18px;background:none;border:none;cursor:pointer;font-size:.875rem;font-weight:600;color:var(--qs-dark);text-align:left;font-family:var(--qs-font);transition:color var(--qs-transition)}
.qs-faq-question:hover{color:var(--qs-primary)}
.qs-faq-toggle{font-size:1.25rem;font-weight:700;color:var(--qs-primary);transition:transform var(--qs-transition-bounce);flex-shrink:0;margin-left:12px;line-height:1}
.qs-faq-item[aria-expanded="true"] .qs-faq-toggle{transform:rotate(45deg)}
.qs-faq-answer{padding:0 18px 16px;font-size:.8125rem;color:var(--qs-text-light);line-height:1.7;display:none}
.qs-faq-item[aria-expanded="true"] .qs-faq-answer{display:block;animation:qs-fadeIn 0.3s ease}
@keyframes qs-fadeIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}

/* ===== CTA BANNER ===== */
.qs-cta-banner{padding:clamp(48px,6vw,100px) 0;background:linear-gradient(135deg,var(--qs-primary-darker) 0%,var(--qs-primary) 50%,var(--qs-primary-light) 100%);position:relative;overflow:hidden;text-align:center}
.qs-cta-banner::before{content:'';position:absolute;width:600px;height:600px;border-radius:50%;background:rgba(255,255,255,0.04);top:-200px;left:-200px;pointer-events:none}
.qs-cta-banner::after{content:'';position:absolute;width:400px;height:400px;border-radius:50%;background:rgba(255,255,255,0.03);bottom:-150px;right:-100px;pointer-events:none}
.qs-cta-banner-inner{max-width:650px;margin:0 auto;position:relative;z-index:1}
.qs-cta-heading{font-size:clamp(1.75rem,3vw,2.5rem);font-weight:800;color:#fff;margin:0 0 12px;line-height:1.2}
.qs-cta-subtext{font-size:clamp(1rem,1.2vw,1.125rem);color:rgba(255,255,255,0.75);margin:0 0 32px}
.qs-cta-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* ===== FOOTER ===== */
.qs-footer{background:var(--qs-footer-bg,var(--qs-dark));color:var(--qs-footer-text,rgba(255,255,255,0.55));position:relative;font-size:.875rem}
.qs-footer-wave{position:absolute;top:-2px;left:0;width:100%;height:60px;overflow:hidden;pointer-events:none}
.qs-footer-wave svg{width:100%;height:100%}
.qs-footer-main{padding:clamp(40px,5vw,80px) 0 clamp(24px,3vw,40px)}
.qs-footer-grid{display:grid;grid-template-columns:2.2fr 1fr 1fr 1fr 1fr;gap:40px}
.qs-footer-brand .qs-logo{margin-bottom:14px}
.qs-footer-brand .qs-logo .qs-logo-text{color:#fff}
.qs-footer-desc{font-size:.8125rem;line-height:1.7;margin:0 0 18px;color:rgba(255,255,255,0.4);max-width:320px}
.qs-footer-social{display:flex;gap:8px}
.qs-social-link{width:34px;height:34px;border-radius:var(--qs-radius);background:rgba(255,255,255,0.06);display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,0.4);transition:all var(--qs-transition)}
.qs-social-link:hover{background:var(--qs-primary);color:#fff;transform:translateY(-3px);box-shadow:0 4px 12px rgba(37,99,235,0.3)}
.qs-footer-heading{font-size:.75rem;font-weight:700;color:#fff;text-transform:uppercase;letter-spacing:.06em;margin:0 0 16px}
.qs-footer-menu{list-style:none;padding:0;margin:0}
.qs-footer-menu li{margin-bottom:10px}
.qs-footer-menu li a{font-size:.8125rem;color:var(--qs-footer-link,rgba(255,255,255,0.4));text-decoration:none;transition:all var(--qs-transition);display:inline-flex;align-items:center;gap:4px}
.qs-footer-menu li a:hover{color:#fff;transform:translateX(4px)}
.qs-footer-bottom{border-top:1px solid rgba(255,255,255,0.06);padding:20px 0}
.qs-footer-bottom-inner{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px}
.qs-footer-links{display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap}
.qs-footer-links a{position:relative;display:inline-flex;align-items:center;justify-content:center;padding:8px 18px;font-size:.75rem;font-weight:600;letter-spacing:.02em;color:rgba(255,255,255,0.6);text-decoration:none;background:rgba(255,255,255,0.05);border:1px solid rgba(255,255,255,0.09);border-radius:999px;transition:color var(--qs-transition),background var(--qs-transition),border-color var(--qs-transition),transform var(--qs-transition),box-shadow var(--qs-transition)}
.qs-footer-links a:hover{color:#fff;background:var(--qs-primary);border-color:var(--qs-primary);transform:translateY(-2px);box-shadow:0 6px 18px rgba(37,99,235,0.35)}
.qs-footer-links a:active{transform:translateY(0)}
.qs-footer-links a:focus-visible{outline:2px solid var(--qs-primary-light);outline-offset:2px}
.qs-copyright{font-size:.75rem;color:rgba(255,255,255,0.3);margin:0;text-align:center}

/* Contact form */
.qs-contact-form-wrap{display:flex;flex-direction:column;gap:18px}
.qs-contact-form__heading{margin:0}
.qs-contact-form__subheading{margin:-10px 0 0;color:var(--qs-text-light,#64748b);font-size:.9375rem}
.qs-contact-form{display:flex;flex-direction:column;gap:16px}
.qs-contact-form__row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.qs-contact-form__field{display:flex;flex-direction:column;gap:6px}
.qs-contact-form__label{font-size:.8125rem;font-weight:600;color:var(--qs-dark,#0f172a)}
.qs-contact-form textarea.qs-contact-form__textarea{min-height:150px;resize:vertical;font-family:var(--qs-font);line-height:1.6}
.qs-contact-form .qs-btn{align-self:flex-start;min-width:180px}
.qs-contact-form__status{font-size:.875rem;font-weight:500;padding:12px 16px;border-radius:var(--qs-radius);line-height:1.5}
.qs-contact-form__status.qs-is-success{background:#ecfdf5;border:1px solid #a7f3d0;color:#047857}
.qs-contact-form__status.qs-is-error{background:#fef2f2;border:1px solid #fecaca;color:#b91c1c}
@media (max-width:640px){.qs-contact-form__row{grid-template-columns:1fr}}

/* ========================================
   RESPONSIVE
   ======================================== */
@media(max-width:1024px){
  .qs-hero-grid{grid-template-columns:1fr;gap:40px;text-align:center}
  .qs-hero-text-col{text-align:center}
  .qs-hero-desc{margin-left:auto;margin-right:auto}
  .qs-hero-actions{justify-content:center}
  .qs-social-proof{justify-content:center}
  .qs-hero-illustration-wrap{max-width:380px;margin:0 auto}
  .qs-floating-card{display:none!important}
  .qs-countdown-card{position:static;margin-top:16px;max-width:300px;margin-left:auto;margin-right:auto}
  .qs-stats-grid{grid-template-columns:repeat(3,1fr)}
  .qs-testimonials-grid{grid-template-columns:1fr 1fr}
  .qs-pricing-grid{grid-template-columns:repeat(2,1fr)}
  .qs-pricing-featured{transform:none}
  .qs-pricing-featured:hover{transform:translateY(-6px)}
  .qs-ai-tools-layout{grid-template-columns:1fr}
  .qs-footer-grid{grid-template-columns:repeat(3,1fr)}
  .qs-faq-grid{grid-template-columns:1fr}
}
@media(max-width:768px){
  .qs-header-inner{height:64px}
  .qs-mobile-toggle{display:flex}
  .qs-nav{display:none;position:fixed;top:64px;left:0;right:0;bottom:0;background:rgba(255,255,255,0.98);backdrop-filter:blur(12px);z-index:999;padding:24px;overflow-y:auto}
  .qs-nav.open{display:block}
  .qs-nav-list,.qs-nav ul{flex-direction:column;gap:0}
  .qs-nav-list li a,.qs-nav ul li a{padding:14px 16px;font-size:1rem;border-bottom:1px solid var(--qs-border-light)}
  .qs-nav-list li.current-menu-item a::after,.qs-nav ul li.current-menu-item a::after{display:none}
  .qs-header-right .qs-btn-text{display:none}
  .qs-hero-modern{padding:40px 0}
  .qs-section-header{margin-bottom:32px}
  .qs-container{padding:0 16px}
  .qs-auth-wrapper{flex-direction:column}
  .qs-auth-left{display:none}
  .qs-auth-right{width:100%;padding:40px 20px}
  .qs-stats-grid{grid-template-columns:repeat(2,1fr)}
  .qs-testimonials-grid{grid-template-columns:1fr}
  .qs-pricing-grid{grid-template-columns:1fr;max-width:380px;margin:0 auto}
  .qs-pricing-featured{transform:none}
  .qs-pricing-featured:hover{transform:translateY(-6px)}
  .qs-footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .qs-steps-flow{flex-direction:column;align-items:center;gap:16px}
  .qs-step-item{max-width:200px;padding:0}
  .qs-step-line{width:2px;height:24px;margin:0 auto}
  .qs-footer-bottom-inner{text-align:center}
  .qs-hero-illustration-wrap{max-width:300px}
  .qs-mobile-nav{display:flex}
  .qs-footer{padding-bottom:calc(96px + env(safe-area-inset-bottom,0px))}
  .qs-main,.qs-front-page,.qs-auth-page{padding-bottom:calc(96px + env(safe-area-inset-bottom,0px))}
}
@media(max-width:480px){
  .qs-pill-badge{font-size:.7rem;padding:4px 10px}
  .qs-stats-grid{grid-template-columns:1fr 1fr}
  .qs-features-matrix{grid-template-columns:1fr}
  .qs-footer-grid{grid-template-columns:1fr}
  .qs-header-right{gap:4px}
  .qs-header-right .qs-btn-sm{padding:6px 10px;font-size:.7rem}
  .qs-header-right .qs-btn-text{display:none}
}

/* ===== Login required gate ========================================== */
.qs-login-required{padding:56px 16px 72px;display:flex;justify-content:center}
.qs-login-required-card{width:100%;max-width:560px;background:#fff;border:1px solid #e2e8f0;border-radius:20px;box-shadow:0 12px 32px rgba(30,64,175,.08);padding:40px 36px;text-align:center}
.qs-login-required-icon{width:72px;height:72px;margin:0 auto 20px;display:flex;align-items:center;justify-content:center;border-radius:50%;color:#fff;background:linear-gradient(135deg,#1e40af,#3b82f6)}
.qs-login-required-title{margin:0 0 10px;font-size:1.55rem;font-weight:700;color:#0f172a;line-height:1.3}
.qs-login-required-sub{margin:0 0 24px;color:#475569;font-size:.95rem;line-height:1.6}
.qs-login-required-list{list-style:none;margin:0 0 28px;padding:0;text-align:left}
.qs-login-required-list li{position:relative;padding:10px 0 10px 34px;border-top:1px solid #f1f5f9;color:#475569;font-size:.9rem;line-height:1.55}
.qs-login-required-list li:first-child{border-top:0}
.qs-login-required-list li::before{content:"\2713";position:absolute;left:0;top:12px;width:22px;height:22px;border-radius:50%;background:#ecfdf5;color:#059669;font-size:.8rem;font-weight:700;line-height:22px;text-align:center}
.qs-login-required-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.qs-login-required-btn{display:inline-block;padding:12px 26px;border-radius:10px;font-weight:600;font-size:.95rem;text-decoration:none;transition:transform .15s ease,box-shadow .15s ease}
.qs-login-required-btn--primary{background:linear-gradient(135deg,#2563eb,#1d4ed8);color:#fff;box-shadow:0 6px 16px rgba(37,99,235,.3)}
.qs-login-required-btn--primary:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(37,99,235,.35);color:#fff}
.qs-login-required-btn--secondary{background:#f1f5f9;color:#1e40af;border:1px solid #e2e8f0}
.qs-login-required-btn--secondary:hover{background:#e2e8f0;color:#1e40af}
.qs-login-required-note{margin:18px 0 0;color:#94a3b8;font-size:.85rem}
@media(max-width:480px){
  .qs-login-required{padding:32px 12px 48px}
  .qs-login-required-card{padding:28px 20px}
  .qs-login-required-actions{flex-direction:column}
  .qs-login-required-btn{width:100%}
}

/* ===== Signup activation note ======================================== */
.qs-auth-activation-note{display:flex;gap:12px;align-items:flex-start;text-align:left;background:#eff6ff;border:1px solid #bfdbfe;border-radius:12px;padding:14px 16px;margin:0 0 18px;color:#1e40af}
.qs-auth-activation-note p{margin:0;font-size:.85rem;line-height:1.55}
.qs-auth-activation-note strong{display:block;color:#1e3a8a}
.qs-auth-activation-ico{flex-shrink:0;margin-top:2px;color:#2563eb}