:root{--color-bg: #f7f6f3;--color-bg-subtle: #efede8;--color-surface: #ffffff;--color-surface-hover: #faf9f7;--color-border: rgba(0, 0, 0, .08);--color-border-strong: rgba(0, 0, 0, .15);--color-text: #1a1814;--color-text-secondary: #6b6660;--color-text-muted: #9c9690;--color-text-inverse: #ffffff;--color-accent: #0ea87e;--color-accent-hover: #0c9570;--color-accent-light: rgba(14, 168, 126, .1);--color-accent-glow: rgba(14, 168, 126, .25);--color-error: #e53e3e;--color-error-bg: #fff5f5;--color-warning: #d97706;--color-success: #0ea87e;--font-display: "Syne", sans-serif;--font-body: "Inter", sans-serif;--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-lg: 1.125rem;--text-xl: 1.25rem;--text-2xl: 1.5rem;--text-3xl: 1.875rem;--text-4xl: clamp(2.25rem, 2rem + 2vw, 3.5rem);--text-hero: clamp(3rem, 2rem + 5vw, 5.5rem);--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--space-16: 4rem;--space-20: 5rem;--space-24: 6rem;--space-section: clamp(4rem, 3rem + 4vw, 8rem);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-xl: 24px;--radius-full: 9999px;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .06), 0 1px 2px rgba(0, 0, 0, .04);--shadow-md: 0 4px 12px rgba(0, 0, 0, .08), 0 2px 4px rgba(0, 0, 0, .04);--shadow-lg: 0 12px 32px rgba(0, 0, 0, .1), 0 4px 8px rgba(0, 0, 0, .05);--shadow-accent: 0 4px 24px var(--color-accent-glow);--duration-fast: .12s;--duration-normal: .22s;--duration-slow: .38s;--ease-out: cubic-bezier(.16, 1, .3, 1);--ease-in-out: cubic-bezier(.4, 0, .2, 1);--container-max: 1200px;--container-narrow: 800px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{font-family:var(--font-body);font-size:var(--text-base);line-height:1.6;color:var(--color-text);background-color:var(--color-bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--color-border-strong);border-radius:var(--radius-full)}:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px;border-radius:2px}h1,h2,h3,h4{font-family:var(--font-display);line-height:1.1;letter-spacing:0}a{color:var(--color-accent);text-decoration:none}a:hover{text-decoration:underline}.container{width:100%;max-width:var(--container-max);margin:0 auto;padding:0 var(--space-6)}.container--narrow{max-width:var(--container-narrow)}.app-lazy-section{min-height:320px;padding:var(--space-20) 0;color:var(--color-text-secondary);background:var(--color-bg-subtle);scroll-margin-top:60px}@keyframes wave-bar{0%,to{transform:scaleY(.3)}50%{transform:scaleY(1)}}@keyframes pulse-ring{0%{transform:scale(1);opacity:.6}to{transform:scale(1.8);opacity:0}}@keyframes fade-in-up{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}@keyframes spin{to{transform:rotate(360deg)}}@keyframes shimmer{0%{background-position:-200% center}to{background-position:200% center}}.redeem-overlay{position:fixed;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;background:#00000059;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:210;padding:var(--space-4);animation:auth-fade var(--duration-normal) var(--ease-out)}.redeem-modal{width:min(440px,94vw);background:var(--color-surface);border:1px solid var(--color-border-strong);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg),0 0 0 1px #0ea87e14;overflow:hidden;animation:auth-rise var(--duration-normal) var(--ease-out)}.redeem-header{position:relative;display:flex;flex-direction:column;align-items:center;gap:var(--space-1);padding:var(--space-8) var(--space-6) var(--space-5);text-align:center;background:linear-gradient(180deg,rgba(14,168,126,.08),transparent);border-bottom:1px solid var(--color-border)}.redeem-crown{display:flex;align-items:center;justify-content:center;width:44px;height:44px;margin-bottom:var(--space-2);font-size:20px;color:#fff;background:linear-gradient(135deg,var(--color-accent),var(--color-accent-hover));border-radius:var(--radius-md);box-shadow:0 4px 14px var(--color-accent-glow)}.redeem-title{font-family:var(--font-display);font-size:var(--text-xl);font-weight:700;color:var(--color-text)}.redeem-subtitle{font-size:var(--text-sm);color:var(--color-text-secondary);max-width:300px;line-height:1.5}.redeem-price{margin-top:var(--space-3);font-size:var(--text-sm);font-weight:700;color:var(--color-text);letter-spacing:.01em}.redeem-close{position:absolute;top:var(--space-4);right:var(--space-4);color:var(--color-text-muted);font-size:var(--text-base);line-height:1;width:28px;height:28px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);transition:color var(--duration-fast) var(--ease-out),background var(--duration-fast) var(--ease-out)}.redeem-close:hover:not(:disabled){color:var(--color-text);background:var(--color-bg-subtle)}.redeem-close:disabled{opacity:.4;cursor:not-allowed}.redeem-form{display:flex;flex-direction:column;gap:var(--space-3);padding:var(--space-6)}.redeem-account-note{margin:0;padding:var(--space-3);color:var(--color-text-secondary);background:var(--color-accent-light);border:1px solid rgba(14,168,126,.22);border-radius:var(--radius-md);font-size:var(--text-xs);line-height:1.5}.redeem-account-note strong{color:var(--color-text)}.redeem-actions{display:grid;gap:var(--space-2)}.redeem-action{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);min-height:42px;padding:var(--space-2) var(--space-4);color:var(--color-accent);background:var(--color-bg-subtle);border:1px solid var(--color-border-strong);border-radius:var(--radius-md);font-size:var(--text-sm);font-weight:700;text-align:center;cursor:pointer;transition:background var(--duration-fast) var(--ease-out),border-color var(--duration-fast) var(--ease-out),color var(--duration-fast) var(--ease-out),transform var(--duration-fast) var(--ease-out)}.redeem-action:hover{color:var(--color-accent-hover);border-color:#0ea87e59;background:var(--color-accent-light);text-decoration:none;transform:translateY(-1px)}.redeem-action:disabled{opacity:.7;cursor:wait;transform:none}.redeem-action--primary{color:#fff;background:var(--color-accent);border-color:var(--color-accent)}.redeem-action--primary:hover{color:#fff;background:var(--color-accent-hover);border-color:var(--color-accent-hover)}.redeem-action--card{color:var(--color-text);background:#fff;border-color:#1f2937}.redeem-action--card:hover{color:#111827;background:#f9fafb;border-color:#111827}.redeem-card-checkout{display:grid;gap:var(--space-2);min-height:72px}.redeem-payment-label{display:flex;align-items:baseline;justify-content:space-between;gap:var(--space-2);color:var(--color-text);font-size:var(--text-xs);font-weight:700}.redeem-payment-security{color:var(--color-text-muted);font-size:11px;font-weight:500;text-align:right}.redeem-card-unavailable{margin:0;padding:var(--space-2) var(--space-3);color:var(--color-text-secondary);background:var(--color-bg-subtle);border:1px solid var(--color-border);border-radius:var(--radius-md);font-size:var(--text-xs);line-height:1.45;text-align:left}.redeem-divider{display:flex;align-items:center;gap:var(--space-3);color:var(--color-text-muted);font-size:var(--text-xs);text-transform:uppercase;letter-spacing:.04em}.redeem-divider:before,.redeem-divider:after{content:"";flex:1;height:1px;background:var(--color-border)}.redeem-input{height:48px;padding:0 var(--space-4);background:var(--color-bg);border:1.5px solid var(--color-border-strong);border-radius:var(--radius-md);color:var(--color-text);font-size:var(--text-lg);letter-spacing:.12em;text-align:center;transition:border-color var(--duration-fast) var(--ease-out),box-shadow var(--duration-fast) var(--ease-out)}.redeem-input::placeholder{color:var(--color-text-muted);letter-spacing:.12em}.redeem-input:focus{outline:none;border-color:var(--color-accent);box-shadow:0 0 0 3px var(--color-accent-glow)}.redeem-input:disabled{opacity:.6;cursor:not-allowed}.redeem-error{font-size:var(--text-sm);color:var(--color-error);background:var(--color-error-bg);border:1px solid rgba(229,62,62,.2);border-radius:var(--radius-md);padding:var(--space-2) var(--space-3)}.redeem-submit{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);height:44px;background:var(--color-accent);color:#fff;font-size:var(--text-base);font-weight:600;border-radius:var(--radius-md);transition:background var(--duration-fast) var(--ease-out),transform var(--duration-fast) var(--ease-out),box-shadow var(--duration-fast) var(--ease-out)}.redeem-submit:hover:not(:disabled){background:var(--color-accent-hover);box-shadow:var(--shadow-accent)}.redeem-submit:active:not(:disabled){transform:scale(.985)}.redeem-submit:disabled{opacity:.65;cursor:not-allowed}.redeem-spinner{width:14px;height:14px;border:2px solid rgba(255,255,255,.35);border-top-color:#fff;border-radius:50%;animation:auth-spin .7s linear infinite}@media (max-width: 480px){.redeem-payment-label{align-items:flex-start;flex-direction:column;gap:2px}.redeem-payment-security{text-align:left}}.account-bar{position:relative;display:flex;align-items:center;gap:var(--space-2)}.account-meta{display:flex;align-items:center;gap:var(--space-2)}.tier-badge{display:inline-flex;align-items:center;height:20px;padding:0 8px;border-radius:var(--radius-full);font-size:.7rem;font-weight:700;letter-spacing:.03em;white-space:nowrap;border:1px solid transparent}.tier-badge--anonymous{color:var(--color-text-muted);background:var(--color-bg-subtle);border-color:var(--color-border-strong)}.tier-badge--free{color:var(--color-accent);background:var(--color-accent-light);border-color:#0ea87e4d}.tier-badge--pro{color:#fff;background:linear-gradient(135deg,var(--color-accent),var(--color-accent-hover));border-color:#0ea87e66;box-shadow:0 2px 8px var(--color-accent-glow)}.account-quota{font-size:var(--text-xs);color:var(--color-text-muted);white-space:nowrap}.account-login-btn{flex-shrink:0;height:30px;padding:0 var(--space-4);border:1px solid var(--color-accent);border-radius:var(--radius-full);font-size:var(--text-sm);font-weight:600;white-space:nowrap;color:#fff;background:var(--color-accent);transition:background var(--duration-fast) var(--ease-out),transform var(--duration-fast) var(--ease-out),box-shadow var(--duration-fast) var(--ease-out)}.account-login-btn:hover{background:var(--color-accent-hover);box-shadow:var(--shadow-accent)}.account-login-btn:active{transform:scale(.97)}.account-login-btn:focus-visible{outline:3px solid rgba(14,168,126,.22);outline-offset:2px}.account-user{display:flex;align-items:center;gap:var(--space-2);height:30px;max-width:200px;padding:0 var(--space-3) 0 var(--space-1);border-radius:var(--radius-full);background:var(--color-bg-subtle);border:1px solid var(--color-border-strong);transition:background var(--duration-fast) var(--ease-out),border-color var(--duration-fast) var(--ease-out)}.account-user:hover,.account-user--open{background:var(--color-accent-light);border-color:var(--color-accent)}.account-username{font-size:var(--text-sm);color:var(--color-text);max-width:100px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.account-caret{font-size:9px;color:var(--color-text-muted)}.account-menu{position:absolute;top:calc(100% + 8px);right:0;width:240px;background:var(--color-surface);border:1px solid var(--color-border-strong);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:var(--space-2);z-index:120;animation:account-menu-in var(--duration-fast) var(--ease-out)}@keyframes account-menu-in{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.account-menu-head{display:flex;align-items:center;justify-content:space-between;gap:var(--space-2);padding:var(--space-2) 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var(--space-3);border-radius:var(--radius-sm);font-size:var(--text-sm);color:var(--color-text-secondary);transition:background var(--duration-fast) var(--ease-out),color var(--duration-fast) var(--ease-out)}.account-menu-item:hover{background:var(--color-bg-subtle);color:var(--color-text)}.account-menu-item--upgrade{color:var(--color-accent);font-weight:600}.account-menu-item--upgrade:hover{background:var(--color-accent-light);color:var(--color-accent-hover)}@media (max-width: 480px){.account-bar{gap:var(--space-1)}.account-quota{display:none}.account-login-btn{height:44px;padding-inline:var(--space-3)}}@media (max-width: 360px){.account-meta{display:none}}.navbar{position:fixed;top:0;left:0;right:0;z-index:100;height:60px;background:#f7f6f3d9;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid 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