:root{--bg:#F8F9FA;--bg-secondary:#F1F3F5;--surface:rgba(255, 255, 255, 0.95);--surface-solid:#FFFFFF;--surface-2:rgba(241, 243, 245, 0.9);--surface-3:rgba(233, 236, 239, 0.8);--border:rgba(0, 163, 114, 0.12);--border-subtle:rgba(0, 0, 0, 0.06);--primary:#009165;--primary-dark:#007350;--primary-light:#26D99D;--accent:#00A372;--accent-dim:rgba(0, 163, 114, 0.08);--success:#009165;--warning:#D4930A;--danger:#D63B3B;--info:#2D7DD2;--easy:#009165;--medium:#D4930A;--hard:#D63B3B;--text:#1A1D20;--text-muted:#343A40;--text-faint:#495057;--gradient-primary:linear-gradient(135deg, #009165 0%, #00A372 100%);--gradient-primary-soft:linear-gradient(135deg, rgba(0, 145, 101, 0.12) 0%, rgba(0, 163, 114, 0.08) 100%);--gradient-success:linear-gradient(135deg, #009165 0%, #00A372 100%);--gradient-warm:linear-gradient(135deg, #D4930A 0%, #D63B3B 100%);--gradient-hero:linear-gradient(160deg, #FFFFFF 0%, #F8F9FA 40%, #F1F3F5 100%);--gradient-card:linear-gradient(135deg, rgba(0, 163, 114, 0.03) 0%, rgba(0, 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4px 16px rgba(0, 163, 114, 0.22);--glow-accent:0 4px 14px rgba(0, 196, 139, 0.18);--glow-success:0 4px 14px rgba(0, 163, 114, 0.18);--shadow-sm:0 2px 8px rgba(0, 0, 0, 0.4);--shadow-md:0 4px 20px rgba(0, 0, 0, 0.5);--shadow-lg:0 8px 40px rgba(0, 0, 0, 0.6);--shadow-xl:0 20px 60px rgba(0, 0, 0, 0.7)}*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;font-size:16px}body{font-family:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;background-color:var(--bg);color:var(--text);line-height:1.6;min-height:100vh;overflow-x:clip;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;transition:background-color var(--t-slow),color var(--t-normal)}body::before{content:'';position:fixed;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(ellipse 60% 40% at 20% 20%,rgb(0 163 114 / .07) 0%,transparent 60%),radial-gradient(ellipse 50% 40% at 80% 80%,rgb(0 196 139 / .05) 0%,transparent 60%),radial-gradient(ellipse 40% 30% at 60% 10%,rgb(0 163 114 / .04) 0%,transparent 60%);pointer-events:none;z-index:0;opacity:.3;transition:opacity var(--t-slow)}:root.dark-theme body::before{opacity:1}body::after{content:'';position:fixed;inset:0;background-image:radial-gradient(rgb(0 163 114 / .12) 1px,transparent 1px);background-size:32px 32px;pointer-events:none;z-index:0;opacity:.08;transition:opacity var(--t-slow)}:root.dark-theme 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ease}.btn:hover::before{left:150%}.btn-primary{background:var(--gradient-primary);color:#fff;box-shadow:var(--glow-primary)}.btn-primary:hover{transform:translateY(-2px) scale(1.02);box-shadow:var(--glow-primary),0 0 0 1px rgb(124 111 247 / .3)}.btn-primary:active{transform:translateY(0) scale(.99)}.btn-outline{background:#fff0;color:var(--text);border:1.5px solid var(--border);backdrop-filter:blur(10px)}.btn-outline:hover{border-color:var(--primary);color:var(--primary);background:rgb(124 111 247 / .08)}.btn-ghost{background:rgb(108 92 231 / .06);color:var(--text);border:1px solid var(--border-subtle);backdrop-filter:blur(8px)}:root.dark-theme .btn-ghost{background:rgb(255 255 255 / .05)}.btn-ghost:hover{background:rgb(124 111 247 / .1);border-color:var(--border)}.btn-success{background:var(--gradient-success);color:#fff;box-shadow:var(--glow-success)}.btn-danger{background:linear-gradient(135deg,#FF6B6B,#FD79A8);color:#fff}.btn-sm{padding:10px 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14px!important;font-size:0.8rem!important;min-height:32px!important;height:32px!important;max-height:32px!important;font-weight:700!important;line-height:32px!important;white-space:nowrap!important;flex-shrink:0!important;border-radius:16px!important;display:inline-flex!important;align-items:center!important;justify-content:center!important}.header-pill{display:flex;align-items:center;gap:6px;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r-full);padding:6px 14px;font-size:.82rem;font-weight:700;backdrop-filter:blur(8px);transition:all var(--t-normal)}.header-streak{color:var(--warning)}.header-xp{color:var(--accent)}.header-pill:hover{border-color:rgb(124 111 247 / .4)}.theme-toggle{width:40px;height:40px;background:var(--surface-2);border:1px solid var(--border);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1rem;cursor:pointer;transition:all var(--t-spring);backdrop-filter:blur(8px);flex-shrink:0;font-family:inherit}.theme-toggle:hover{background:rgb(124 111 247 / .15);border-color:var(--primary);transform:rotate(20deg) scale(1.1)}.theme-toggle .icon-dark{display:none}.theme-toggle .icon-light{display:block}:root.dark-theme .theme-toggle .icon-dark{display:block}:root.dark-theme .theme-toggle .icon-light{display:none}.mobile-menu-toggle{display:none;flex-direction:column;gap:5px;padding:8px;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r-sm);cursor:pointer;flex-shrink:0}.mobile-menu-toggle span{display:block;width:22px;height:2px;background:var(--text);border-radius:2px;transition:all var(--t-normal)}.mobile-menu-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}.mobile-menu-toggle.is-open span:nth-child(2){opacity:0;transform:scaleX(0)}.mobile-menu-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}.mobile-nav{display:none;position:fixed;inset:var(--nav-height) 0 0 0;background:rgb(240 244 255 / .97);backdrop-filter:blur(24px);z-index:99;padding:var(--sp-xl) var(--sp-lg);flex-direction:column;gap:var(--sp-md);overflow-y:auto}:root.dark-theme .mobile-nav{background:rgb(7 9 26 / .97)}.mobile-nav.is-open{display:flex}.mobile-nav-tab{display:flex;align-items:center;gap:var(--sp-md);padding:var(--sp-md) var(--sp-lg);background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r-lg);font-size:1.1rem;font-weight:600;color:var(--text);transition:all var(--t-normal)}.mobile-nav-tab:hover,.mobile-nav-tab.active{border-color:var(--primary);color:var(--primary);background:rgb(124 111 247 / .1)}.hero{position:relative;padding-block:100px 80px;background:var(--gradient-hero);overflow:hidden;text-align:center}.hero::before{content:'';position:absolute;width:900px;height:900px;background:radial-gradient(circle,rgb(124 111 247 / .18) 0%,transparent 65%);top:-200px;left:50%;transform:translateX(-50%);pointer-events:none}.hero::after{content:'';position:absolute;width:500px;height:500px;background:radial-gradient(circle,rgb(0 229 255 / .1) 0%,transparent 70%);bottom:-100px;right:5%;pointer-events:none}.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;background:rgb(124 111 247 / .12);border:1px solid rgb(124 111 247 / .35);border-radius:var(--r-full);padding:7px 20px;font-size:.78rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);margin-bottom:var(--sp-lg);animation:fadeInDown 0.6s ease both;backdrop-filter:blur(8px)}.hero-title{font-size:clamp(2.5rem, 6.5vw, 5rem);font-weight:900;line-height:1.05;letter-spacing:-.045em;margin-bottom:var(--sp-lg);animation:fadeInUp 0.6s ease 0.1s both}.hero-subtitle{font-size:clamp(1rem, 2vw, 1.2rem);color:var(--text-muted);max-width:520px;margin-inline:auto;margin-bottom:var(--sp-xl);line-height:1.75;animation:fadeInUp 0.6s ease 0.2s 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var(--border);padding-block:var(--sp-lg);position:relative;z-index:1}.social-proof-inner{display:flex;align-items:center;justify-content:center;gap:var(--sp-2xl);flex-wrap:wrap}.proof-item{display:flex;align-items:center;gap:8px;font-size:.88rem;color:var(--text-muted);font-weight:500}.proof-item strong{color:var(--text);font-weight:800}.proof-dot{width:6px;height:6px;background:var(--primary);border-radius:50%;animation:pulse-dot 2s ease-in-out infinite;box-shadow:0 0 8px var(--primary)}.daily-riddle-section{padding-block:var(--sp-2xl);position:relative}.daily-riddle-section::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 60% 80% at 50% 50%,rgb(124 111 247 / .06) 0%,transparent 70%);pointer-events:none}.riddle-card-main{background:var(--surface);backdrop-filter:blur(24px) saturate(180%);border:1px solid var(--border);border-radius:var(--r-2xl);padding:var(--sp-2xl);max-width:720px;margin-inline:auto;position:relative;box-shadow:0 0 60px rgb(124 111 247 / .1),var(--shadow-xl)}.riddle-card-main::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgb(124 111 247 / .06) 0%,rgb(0 229 255 / .03) 100%);border-radius:inherit;pointer-events:none}.riddle-card-main::after{content:'';position:absolute;top:0;left:10%;right:10%;height:1px;background:var(--gradient-primary);border-radius:var(--r-full);opacity:.6}.riddle-countdown{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--sp-xl);flex-wrap:wrap;gap:8px}.countdown-label{display:flex;align-items:center;gap:8px;font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted)}.countdown-timer{display:flex;align-items:center;gap:6px;font-size:1.2rem;font-weight:800;color:var(--accent);background:rgb(0 229 255 / .08);border:1px solid rgb(0 229 255 / .2);border-radius:var(--r-sm);padding:7px 16px;font-variant-numeric:tabular-nums;box-shadow:0 0 15px rgb(0 229 255 / .1)}.riddle-number{font-size:.72rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--primary);margin-bottom:6px}.riddle-text{font-family:'Cormorant Garamond',Georgia,serif;font-size:clamp(1.2rem, 2.8vw, 1.6rem);font-weight:500;line-height:1.55;color:var(--text);margin-bottom:var(--sp-xl);font-style:italic;position:relative;padding-left:var(--sp-xl)}.riddle-text::before{content:'"';position:absolute;left:0;top:-10px;font-size:3.5rem;color:var(--primary);opacity:.35;line-height:1;font-style:normal;font-weight:900}.riddle-meta-strip{display:flex;align-items:center;gap:var(--sp-lg);margin-bottom:var(--sp-xl);flex-wrap:wrap}.riddle-meta-item{display:flex;align-items:center;gap:6px;font-size:.83rem;color:var(--text-muted);font-weight:500}.riddle-meta-item .highlight{color:var(--text);font-weight:700}.answer-form{display:flex;flex-direction:column;gap:var(--sp-md)}.answer-input-group{display:flex;gap:var(--sp-sm)}.answer-input{flex:1;background:rgb(255 255 255 / .8);border:2px solid var(--border);border-radius:var(--r-full);padding:14px 24px;font-size:1rem;color:var(--text);outline:none;transition:all var(--t-normal);min-height:52px;font-family:inherit;backdrop-filter:blur(8px)}:root.dark-theme .answer-input{background:rgb(255 255 255 / .04)}.answer-input:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgb(124 111 247 / .12),var(--glow-primary)}.answer-input::placeholder{color:var(--text-faint)}.hint-toggle{font-size:.8rem;color:var(--text-muted);background:none;border:none;cursor:pointer;transition:color var(--t-fast);display:flex;align-items:center;gap:4px;font-family:inherit}.hint-toggle:hover{color:var(--accent)}.hint-box{display:none;background:rgb(0 229 255 / .06);border:1px solid rgb(0 229 255 / .2);border-radius:var(--r-md);padding:var(--sp-md);font-size:.88rem;color:var(--accent)}.hint-box.is-visible{display:block;animation:slideInUp 0.3s ease}.answer-feedback{display:none;align-items:center;gap:8px;padding:var(--sp-md) 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16px;font-size:.88rem;font-weight:700;color:var(--primary);box-shadow:0 0 15px rgb(124 111 247 / .1)}.xp-amount{font-size:.875rem;color:var(--text-muted);font-weight:600}.xp-amount strong{color:var(--accent)}.xp-track{height:10px;background:var(--surface-2);border-radius:var(--r-full);overflow:hidden;margin-bottom:8px}.xp-fill{height:100%;background:var(--gradient-primary);border-radius:var(--r-full);transition:width 1s cubic-bezier(.34,1.56,.64,1);box-shadow:0 0 12px rgb(124 111 247 / .5);position:relative}.xp-fill::after{content:'';position:absolute;top:0;right:0;width:8px;height:100%;background:rgb(255 255 255 / .4);border-radius:var(--r-full);animation:shimmer 2s infinite}.streak-container{display:flex;align-items:center;gap:var(--sp-md);background:var(--surface);backdrop-filter:blur(20px);border:1px solid var(--border);border-radius:var(--r-xl);padding:var(--sp-xl)}.streak-icon{font-size:2.5rem;animation:flicker 3s ease-in-out infinite;line-height:1;filter:drop-shadow(0 0 12px 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1fr;text-decoration:none;color:inherit;transition:all var(--t-normal);box-shadow:var(--shadow-lg)}.post-card-featured:hover{transform:translateY(-4px);box-shadow:var(--shadow-xl),0 0 40px rgb(124 111 247 / .1)}.post-card-featured .post-card-thumb{aspect-ratio:auto;height:100%;min-height:300px}.post-card-featured .post-card-body{padding:var(--sp-2xl);justify-content:center}.post-card-featured .post-card-title{font-size:1.5rem}.single-post-header{padding-block:var(--sp-2xl);background:var(--gradient-hero);border-bottom:1px solid var(--border);text-align:center;position:relative}.single-post-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:var(--sp-xl);padding-block:var(--sp-2xl)}.post-content{background:var(--surface);backdrop-filter:blur(20px);border:1px solid var(--border);border-radius:var(--r-xl);padding:var(--sp-2xl)}.post-content h2,.post-content h3{margin-block:var(--sp-xl) var(--sp-md)}.post-content 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