:root{--primary:#4f46e5;--primary-hover:#4338ca;--primary-light:#eef2ff;--bg:#ffffff;--surface:#f8fafc;--surface-2:#f1f5f9;--text:#0f172a;--text-muted:#64748b;--border:#e2e8f0;--border-focus:#4f46e5;--success:#10b981;--danger:#ef4444;--warning:#f59e0b;--shadow-sm:0 1px 2px 0 rgba(0,0,0,0.05);--shadow:0 4px 6px -1px rgba(0,0,0,0.1),0 2px 4px -2px rgba(0,0,0,0.1);--shadow-lg:0 10px 15px -3px rgba(0,0,0,0.1),0 4px 6px -4px rgba(0,0,0,0.1);--radius:12px;--radius-sm:8px;--font-sans:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;--font-heading:'Outfit',sans-serif}[data-theme="dark"]{--primary:#6366f1;--primary-hover:#4f46e5;--primary-light:rgba(99,102,241,0.15);--bg:#090d16;--surface:#111827;--surface-2:#1f2937;--text:#f8fafc;--text-muted:#94a3b8;--border:#1f2937;--border-focus:#6366f1;--shadow-sm:0 1px 2px 0 rgba(0,0,0,0.4);--shadow:0 4px 6px -1px rgba(0,0,0,0.4);--shadow-lg:0 10px 15px -3px rgba(0,0,0,0.5)}*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{font-family:var(--font-sans);background-color:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden;transition:background-color 0.25s ease,color 0.25s ease}a{color:var(--primary);text-decoration:none;transition:color 0.2s ease}a:hover{color:var(--primary-hover)}img{max-width:100%;height:auto;display:block}button,input,select,textarea{font-family:inherit}.container{max-width:1240px;margin:0 auto;padding:0 20px;width:100%}.navbar{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,0.88);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border);transition:all 0.2s ease}[data-theme="dark"] .navbar{background:rgba(15,23,42,0.88)}.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:70px}.brand{display:flex;align-items:center;gap:10px;font-family:var(--font-heading);font-weight:700;font-size:1.35rem;color:var(--text);text-decoration:none}.brand-icon{width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,var(--primary),#06b6d4);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:1.2rem;box-shadow:0 4px 10px rgba(79,70,229,0.3)}.nav-links{display:flex;align-items:center;gap:24px;list-style:none}.nav-item{position:relative}.nav-link{font-weight:500;font-size:0.92rem;color:var(--text);display:flex;align-items:center;gap:6px;padding:8px 12px;border-radius:var(--radius-sm);transition:all 0.2s ease;cursor:pointer}.nav-link:hover,.nav-link.active{background:var(--surface-2);color:var(--primary)}.dropdown-menu{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(4px);background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:18px;min-width:620px;display:none;grid-template-columns:repeat(3,1fr);gap:8px 16px;z-index:1100;opacity:0;pointer-events:none;transition:opacity 0.2s ease,transform 0.2s ease}.nav-item:hover .dropdown-menu,.dropdown-menu.show{display:grid;opacity:1;pointer-events:auto;transform:translateX(-50%) translateY(0)}.dropdown-item{font-size:0.84rem;color:var(--text);padding:7px 10px;border-radius:6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:all 0.15s ease}.dropdown-item:hover{background:var(--primary-light);color:var(--primary);transform:translateX(3px)}.nav-actions{display:flex;align-items:center;gap:12px}.theme-toggle{background:var(--surface-2);border:1px solid var(--border);color:var(--text);width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all 0.2s ease}.theme-toggle:hover{border-color:var(--primary);transform:rotate(15deg)}.mobile-toggle{display:none;background:none;border:none;color:var(--text);font-size:1.5rem;cursor:pointer}.breadcrumb{padding:16px 0 0 0;font-size:0.85rem;color:var(--text-muted);display:flex;align-items:center;gap:8px;flex-wrap:wrap}.breadcrumb a{color:var(--text-muted)}.breadcrumb a:hover{color:var(--primary)}.breadcrumb-separator{font-size:0.75rem}.hero{padding:30px 0 35px;text-align:center}.badge{display:inline-flex;align-items:center;gap:6px;background:var(--primary-light);color:var(--primary);padding:5px 14px;border-radius:999px;font-size:0.82rem;font-weight:600;margin-bottom:16px;text-transform:uppercase;letter-spacing:0.05em}.hero-title{font-family:var(--font-heading);font-size:2.75rem;font-weight:800;line-height:1.2;margin-bottom:16px;color:var(--text);letter-spacing:-0.02em}.hero-title span{background:linear-gradient(135deg,var(--primary),#06b6d4);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.hero-desc{font-size:1.15rem;color:var(--text-muted);max-width:780px;margin:0 auto 28px;line-height:1.55}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 18px;font-size:0.92rem;font-weight:600;border-radius:var(--radius-sm);border:1px solid transparent;cursor:pointer;transition:all 0.2s ease;text-decoration:none;white-space:nowrap}.btn-primary{background:var(--primary);color:#ffffff}.btn-primary:hover{background:var(--primary-hover);box-shadow:0 4px 12px rgba(79,70,229,0.35);transform:translateY(-1px)}.btn-secondary{background:var(--surface-2);color:var(--text);border-color:var(--border)}.btn-secondary:hover{background:var(--border);color:var(--text)}.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary)}.btn-outline:hover{background:var(--primary);color:#fff}.btn-sm{padding:6px 12px;font-size:0.82rem;border-radius:6px}.apca-app-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow-lg);padding:28px;margin-bottom:40px;display:flex;flex-direction:column;gap:24px}.apca-input-section{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:20px}.apca-color-picker-box{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:18px;display:flex;flex-direction:column;gap:12px;box-shadow:var(--shadow-sm)}.color-box-header{display:flex;align-items:center;justify-content:space-between}.color-box-title{font-size:0.95rem;font-weight:700;color:var(--text)}.color-input-row{display:flex;align-items:center;gap:12px}.swatch-wrapper{width:48px;height:48px;border-radius:10px;border:1px solid rgba(0,0,0,0.15);position:relative;overflow:hidden;cursor:pointer;flex-shrink:0;box-shadow:inset 0 0 3px rgba(0,0,0,0.2)}.native-color-picker{position:absolute;top:-10px;left:-10px;width:70px;height:70px;opacity:0;cursor:pointer}.hex-text-input{flex-grow:1;background:var(--surface-2);border:1px solid var(--border);border-radius:8px;padding:10px 14px;font-family:monospace;font-size:1.05rem;font-weight:700;color:var(--text);outline:none;text-transform:uppercase}.hex-text-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}.swap-colors-btn{background:var(--surface-2);border:1px solid var(--border);color:var(--text);width:46px;height:46px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all 0.2s ease;box-shadow:var(--shadow-sm)}.swap-colors-btn:hover{background:var(--primary);color:#fff;border-color:var(--primary);transform:rotate(180deg)}.presets-bar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 16px}.presets-label{font-size:0.8rem;font-weight:700;color:var(--text-muted);text-transform:uppercase}.preset-chip-btn{background:var(--surface-2);border:1px solid var(--border);border-radius:999px;padding:5px 12px;font-size:0.8rem;font-weight:600;color:var(--text);cursor:pointer;transition:all 0.15s ease}.preset-chip-btn:hover{background:var(--primary-light);border-color:var(--primary);color:var(--primary)}.apca-score-banner{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:22px;display:grid;grid-template-columns:1.4fr 1fr;gap:24px;align-items:center;box-shadow:var(--shadow-sm)}.score-display-group{display:flex;align-items:center;gap:20px}.score-badge-circle{width:88px;height:88px;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;background:var(--surface-2);border:3px solid var(--border);flex-shrink:0;box-shadow:var(--shadow-sm)}.score-number{font-family:monospace;font-size:1.75rem;font-weight:900;line-height:1}.score-unit{font-size:0.75rem;font-weight:700;text-transform:uppercase;color:var(--text-muted);margin-top:2px}.score-info{display:flex;flex-direction:column;gap:6px}.score-level-title{font-family:var(--font-heading);font-size:1.25rem;font-weight:700;color:var(--text)}.score-level-desc{font-size:0.88rem;color:var(--text-muted);line-height:1.45}.comparison-box{background:var(--surface-2);border:1px solid var(--border);border-radius:10px;padding:14px 18px;display:flex;flex-direction:column;gap:10px}.comparison-header{font-size:0.8rem;font-weight:700;color:var(--text-muted);text-transform:uppercase;letter-spacing:0.04em}.comparison-row{display:flex;align-items:center;justify-content:space-between;font-size:0.88rem}.compliance-pill{font-size:0.74rem;font-weight:800;padding:3px 8px;border-radius:4px;text-transform:uppercase}.pill-pass{background:rgba(16,185,129,0.2);color:#065f46;border:1px solid rgba(16,185,129,0.35)}[data-theme="dark"] .pill-pass{color:#34d399}.pill-fail{background:rgba(239,68,68,0.2);color:#991b1b;border:1px solid rgba(239,68,68,0.35)}[data-theme="dark"] .pill-fail{color:#f87171}.typography-stage{border-radius:var(--radius);padding:32px 28px;display:flex;flex-direction:column;gap:16px;border:1px solid var(--border);box-shadow:var(--shadow);transition:background-color 0.2s ease,color 0.2s ease}.stage-headline{font-family:var(--font-heading);font-size:2rem;font-weight:800;line-height:1.25}.stage-body{font-size:1rem;line-height:1.65;max-width:900px}.stage-footnote{font-size:0.82rem;opacity:0.8}.matrix-lookup-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:22px;display:flex;flex-direction:column;gap:16px;box-shadow:var(--shadow-sm)}.matrix-header{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px}.matrix-title{font-family:var(--font-heading);font-size:1.15rem;font-weight:700}.matrix-desc{font-size:0.85rem;color:var(--text-muted)}.lookup-table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius-sm);-webkit-overflow-scrolling:touch}.lookup-table{width:100%;border-collapse:collapse;text-align:center;font-size:0.85rem}.lookup-table th,.lookup-table td{padding:10px 12px;border-bottom:1px solid var(--border);border-right:1px solid var(--border)}.lookup-table th:last-child,.lookup-table td:last-child{border-right:none}.lookup-table th{background:var(--surface-2);font-weight:700;color:var(--text);font-size:0.8rem;text-transform:uppercase}.lookup-table tbody tr:last-child td{border-bottom:none}.status-dot-pass{display:inline-block;width:10px;height:10px;border-radius:50%;background:var(--success);margin-right:4px}.status-dot-fail{display:inline-block;width:10px;height:10px;border-radius:50%;background:var(--danger);margin-right:4px}.apca-export-bar{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:16px 20px}.more-tools-section{padding:50px 0;background:var(--surface);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.section-badge{display:inline-block;background:var(--primary-light);color:var(--primary);font-size:0.8rem;font-weight:700;padding:4px 12px;border-radius:999px;text-transform:uppercase;letter-spacing:0.05em;margin-bottom:12px}.section-title-center{font-family:var(--font-heading);font-size:2rem;font-weight:700;color:var(--text);margin-bottom:10px;text-align:center}.section-desc-center{font-size:1.05rem;color:var(--text-muted);max-width:680px;margin:0 auto 36px;text-align:center}.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px}.tool-box-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:22px;display:flex;flex-direction:column;transition:all 0.25s ease;box-shadow:var(--shadow-sm);color:var(--text);text-decoration:none}.tool-box-card:hover{border-color:var(--primary);transform:translateY(-3px);box-shadow:var(--shadow);color:var(--text)}.tool-box-icon{width:44px;height:44px;border-radius:10px;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;margin-bottom:14px}.tool-box-title{font-family:var(--font-heading);font-size:1.15rem;font-weight:700;margin-bottom:8px;color:var(--text)}.tool-box-desc{font-size:0.88rem;color:var(--text-muted);line-height:1.5;margin-bottom:16px;flex-grow:1}.tool-box-link{font-size:0.85rem;font-weight:600;color:var(--primary);display:flex;align-items:center;gap:4px}.features-section{padding:60px 0}.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.feature-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:26px;transition:all 0.25s ease}.feature-card:hover{border-color:var(--primary);transform:translateY(-4px);box-shadow:var(--shadow)}.feature-icon{width:46px;height:46px;border-radius:12px;background:linear-gradient(135deg,var(--primary),#06b6d4);color:#fff;display:flex;align-items:center;justify-content:center;margin-bottom:16px}.feature-title{font-family:var(--font-heading);font-size:1.2rem;font-weight:700;color:var(--text);margin-bottom:8px}.feature-desc{font-size:0.92rem;color:var(--text-muted);line-height:1.55}.how-section{padding:60px 0;background:var(--surface);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.step-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:24px;position:relative;text-align:center;box-shadow:var(--shadow-sm)}.step-num{position:absolute;top:-14px;left:50%;transform:translateX(-50%);width:28px;height:28px;border-radius:50%;background:var(--primary);color:#fff;font-weight:700;font-size:0.85rem;display:flex;align-items:center;justify-content:center}.step-title{font-family:var(--font-heading);font-size:1.1rem;font-weight:700;margin:12px 0 8px}.step-desc{font-size:0.88rem;color:var(--text-muted);line-height:1.5}.article-section{padding:60px 0}.article-wrap{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:38px;max-width:960px;margin:0 auto}.article-heading{font-family:var(--font-heading);font-size:1.85rem;font-weight:700;color:var(--text);margin:10px 0 20px}.article-wrap p{color:var(--text-muted);font-size:1.02rem;line-height:1.75;margin-bottom:18px}.article-wrap p:last-child{margin-bottom:0}.faq-section{padding:60px 0;background:var(--surface);border-top:1px solid var(--border)}.faq-accordion{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:12px}.faq-item{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;transition:all 0.2s ease}.faq-question{width:100%;padding:18px 20px;display:flex;align-items:center;justify-content:space-between;background:none;border:none;text-align:left;font-size:1.02rem;font-weight:600;color:var(--text);cursor:pointer}.faq-icon{transition:transform 0.25s ease;color:var(--primary);flex-shrink:0}.faq-item.active .faq-icon{transform:rotate(180deg)}.faq-answer{padding:0 20px 18px;font-size:0.92rem;color:var(--text-muted);line-height:1.65;display:none}.faq-item.active .faq-answer{display:block}.cta-section{padding:65px 0;text-align:center;background:linear-gradient(135deg,rgba(79,70,229,0.08),rgba(6,182,212,0.08))}.cta-wrap{max-width:760px;margin:0 auto}.cta-title{font-family:var(--font-heading);font-size:2.2rem;font-weight:800;color:var(--text);margin-bottom:14px}.cta-desc{font-size:1.05rem;color:var(--text-muted);margin-bottom:28px}.cta-btn-group{display:flex;align-items:center;justify-content:center;gap:14px;flex-wrap:wrap}.footer{background:var(--bg);border-top:1px solid var(--border);padding:60px 0 30px;font-size:0.88rem}.footer-grid{display:grid;grid-template-columns:1.5fr repeat(2,1fr);gap:36px;margin-bottom:40px}.footer-heading{font-family:var(--font-heading);font-size:0.95rem;font-weight:700;color:var(--text);text-transform:uppercase;letter-spacing:0.05em;margin-bottom:16px}.footer-text{font-size:0.88rem;color:var(--text-muted);line-height:1.6;margin-top:14px;max-width:320px}.footer-links{list-style:none;display:flex;flex-direction:column;gap:9px}.footer-links a{color:var(--text-muted);font-size:0.85rem}.footer-links a:hover{color:var(--primary)}.footer-bottom{padding-top:24px;border-top:1px solid var(--border);color:var(--text-muted);font-size:0.84rem;display:flex;flex-direction:column;gap:8px;text-align:center}.disclaimer-text{font-size:0.78rem;color:var(--text-muted);opacity:0.8}.cookie-banner{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);max-width:560px;width:calc(100% - 40px);background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px 20px;box-shadow:var(--shadow-lg);z-index:9999;display:flex;align-items:center;justify-content:space-between;gap:16px}.cookie-text{font-size:0.84rem;color:var(--text-muted);line-height:1.45}.cookie-text a{text-decoration:underline}.cookie-actions{display:flex;align-items:center;gap:8px;flex-shrink:0}.toast{position:fixed;bottom:24px;right:24px;background:var(--text);color:var(--bg);padding:10px 18px;border-radius:var(--radius-sm);font-size:0.88rem;font-weight:500;box-shadow:var(--shadow-lg);z-index:10000;opacity:0;transform:translateY(10px);transition:all 0.25s ease;pointer-events:none}.toast.show{opacity:1;transform:translateY(0)}@media (max-width:1024px){.features-grid{grid-template-columns:repeat(2,1fr)}.steps-grid{grid-template-columns:repeat(2,1fr)}.dropdown-menu{min-width:480px;grid-template-columns:repeat(2,1fr)}}@media (max-width:768px){.nav-links{display:none;position:absolute;top:70px;left:0;right:0;background:var(--surface);border-bottom:1px solid var(--border);padding:20px;flex-direction:column;gap:12px;box-shadow:var(--shadow-lg)}.nav-links.open{display:flex}.dropdown-menu{position:static;transform:none;min-width:100%;box-shadow:none;border:none;padding:10px 0;grid-template-columns:1fr}.mobile-toggle{display:block}.hero-title{font-size:2.1rem}.hero-desc{font-size:1rem}.apca-app-card{padding:16px 14px;border-radius:12px;gap:18px}.apca-input-section{grid-template-columns:1fr;gap:12px}.swap-colors-btn{align-self:center;transform:rotate(90deg)}.swap-colors-btn:hover{transform:rotate(270deg)}.apca-score-banner{grid-template-columns:1fr;gap:16px;padding:16px 14px}.score-display-group{flex-direction:column;text-align:center;gap:12px}.typography-stage{padding:20px 16px}.stage-headline{font-size:1.5rem}.apca-export-bar{flex-direction:column;align-items:stretch}.apca-export-bar .btn{width:100%}.features-grid{grid-template-columns:1fr}.steps-grid{grid-template-columns:1fr}.article-wrap{padding:24px 18px}.footer-grid{grid-template-columns:1fr;gap:24px}.cookie-banner{flex-direction:column;align-items:flex-start;bottom:10px;width:calc(100% - 20px)}}@media (max-width:480px){.hero-title{font-size:1.8rem}.hero-desc{font-size:0.92rem}}