:root{--bg: #ffffff;--bg-subtle: #f8f8fc;--bg-hover: #f3f3f9;--border: #e4e4ef;--border-focus: #6246ea;--text: #111827;--text-muted: #6b7280;--text-light: #9ca3af;--accent: #6246ea;--accent-light: #ede9fe;--accent-dark: #4f36cc;--pass: #059669;--pass-bg: #ecfdf5;--pass-border: #a7f3d0;--fail: #dc2626;--fail-bg: #fef2f2;--fail-border: #fecaca;--warn: #d97706;--warn-bg: #fffbeb;--warn-border: #fde68a;--radius-sm: 6px;--radius: 8px;--radius-lg: 10px;--font: "Inter", system-ui, -apple-system, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font);font-size:15px;line-height:1.6;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;min-height:100vh}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}button{font-family:var(--font);cursor:pointer;border:none;background:none}input{font-family:var(--font)}.navbar{display:flex;align-items:center;justify-content:space-between;padding:0 28px;height:60px;border-bottom:1px solid var(--border);background:var(--bg);position:sticky;top:0;z-index:100}.navbar-logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px;color:var(--text);text-decoration:none}.navbar-logo-badge{display:inline-flex;align-items:center;padding:2px 8px;background:var(--accent-light);color:var(--accent);border-radius:var(--radius-sm);font-size:11px;font-weight:600;letter-spacing:.04em;text-transform:uppercase}.navbar-link{font-size:14px;color:var(--text-muted);transition:color .15s}.navbar-link:hover{color:var(--text);text-decoration:none}.hero{max-width:720px;margin:0 auto;padding:80px 24px 60px;text-align:center}.hero-tag{display:inline-flex;align-items:center;gap:6px;padding:4px 14px;border:1px solid var(--border);border-radius:99px;font-size:12px;font-weight:600;color:var(--text-muted);letter-spacing:.06em;text-transform:uppercase;margin-bottom:24px}.hero-title{font-size:clamp(32px,5vw,52px);font-weight:700;letter-spacing:-.03em;line-height:1.1;color:var(--text);margin-bottom:20px}.hero-title span{color:var(--accent)}.hero-subtitle{font-size:17px;color:var(--text-muted);max-width:560px;margin:0 auto 40px;line-height:1.65}.scanner-wrap{display:flex;align-items:center;gap:0;border:1.5px solid var(--border);border-radius:var(--radius);overflow:hidden;background:var(--bg);transition:border-color .2s;max-width:560px;margin:0 auto}.scanner-wrap:focus-within{border-color:var(--accent)}.scanner-input{flex:1;padding:14px 16px;font-size:15px;border:none;outline:none;background:transparent;color:var(--text);min-width:0}.scanner-input::placeholder{color:var(--text-light)}.scanner-btn{padding:13px 24px;background:var(--accent);color:#fff;font-size:14px;font-weight:600;border-radius:0 var(--radius-sm) var(--radius-sm) 0;transition:background .15s;white-space:nowrap;letter-spacing:.01em}.scanner-btn:hover:not(:disabled){background:var(--accent-dark)}.scanner-btn:disabled{opacity:.6;cursor:not-allowed}.example-urls{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:16px;flex-wrap:wrap}.example-label{font-size:12px;color:var(--text-light)}.example-chip{display:inline-block;padding:3px 10px;border:1px solid var(--border);border-radius:99px;font-size:12px;color:var(--text-muted);cursor:pointer;transition:border-color .15s,color .15s;background:var(--bg)}.example-chip:hover{border-color:var(--accent);color:var(--accent)}.features{max-width:920px;margin:0 auto;padding:40px 24px;display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px}.feature-card{padding:24px;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--bg-subtle)}.feature-icon{font-size:22px;margin-bottom:10px}.feature-title{font-size:14px;font-weight:600;margin-bottom:6px;color:var(--text)}.feature-desc{font-size:13px;color:var(--text-muted);line-height:1.55}.faq-section{max-width:720px;margin:0 auto;padding:20px 24px 80px}.faq-item{border:1px solid var(--border);border-radius:var(--radius);margin-bottom:8px;overflow:hidden}.faq-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;cursor:pointer;font-size:14px;font-weight:500;color:var(--text);background:var(--bg);transition:background .15s;-webkit-user-select:none;user-select:none;width:100%;text-align:left}.faq-header:hover{background:var(--bg-subtle)}.faq-chevron{width:16px;height:16px;color:var(--text-muted);transition:transform .2s;flex-shrink:0}.faq-chevron.open{transform:rotate(180deg)}.faq-body{padding:0 20px 16px;font-size:13.5px;color:var(--text-muted);line-height:1.65;border-top:1px solid var(--border)}.faq-body ul{margin:10px 0 0 20px}.faq-body li{margin-bottom:6px}.faq-body a{color:var(--accent)}.results-page{min-height:calc(100vh - 60px);background:var(--bg-subtle)}.results-header{background:var(--bg);border-bottom:1px solid var(--border);padding:28px 24px 24px}.results-header-inner{max-width:900px;margin:0 auto}.results-meta{display:flex;align-items:center;gap:10px;margin-bottom:20px}.results-url-badge{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:13px;color:var(--text-muted);font-family:var(--font-mono)}.results-back-btn{padding:6px 14px;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:13px;color:var(--text-muted);background:var(--bg);transition:border-color .15s,color .15s}.results-back-btn:hover{border-color:var(--accent);color:var(--accent)}.score-summary{display:flex;align-items:center;gap:32px;flex-wrap:wrap}.score-ring-wrap{flex-shrink:0}.score-text{flex:1;min-width:200px}.score-number{font-size:48px;font-weight:700;letter-spacing:-.04em;line-height:1;color:var(--text)}.score-grade{display:inline-flex;align-items:center;padding:2px 10px;border-radius:var(--radius-sm);font-size:13px;font-weight:700;margin-left:10px;vertical-align:middle}.grade-Aplus,.grade-A{background:var(--pass-bg);color:var(--pass);border:1px solid var(--pass-border)}.grade-B{background:#eff6ff;color:#1d4ed8;border:1px solid #bfdbfe}.grade-C{background:var(--warn-bg);color:var(--warn);border:1px solid var(--warn-border)}.grade-D{background:#fff7ed;color:#c2410c;border:1px solid #fed7aa}.grade-F{background:var(--fail-bg);color:var(--fail);border:1px solid var(--fail-border)}.score-desc{font-size:14px;color:var(--text-muted);margin-top:8px}.categories-section{max-width:900px;margin:0 auto;padding:28px 24px}.category-header-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.category-header-row h2{font-size:15px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.07em}.cat-card{border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--bg);margin-bottom:12px;overflow:hidden}.cat-card-header{display:flex;align-items:center;gap:14px;padding:18px 20px;cursor:pointer;transition:background .15s;width:100%;text-align:left;background:var(--bg)}.cat-card-header:hover{background:var(--bg-subtle)}.cat-icon{font-size:20px;flex-shrink:0}.cat-name{font-size:15px;font-weight:600;color:var(--text)}.cat-desc{font-size:12px;color:var(--text-muted);margin-top:1px}.cat-score-pill{margin-left:auto;display:flex;align-items:center;gap:10px;flex-shrink:0}.cat-pct{font-size:15px;font-weight:700;color:var(--text)}.cat-progress-bar{width:80px;height:4px;background:var(--border);border-radius:99px;overflow:hidden}.cat-progress-fill{height:100%;border-radius:99px;background:var(--accent);transition:width .6s cubic-bezier(.4,0,.2,1)}.cat-chevron{color:var(--text-muted);transition:transform .2s;flex-shrink:0}.cat-chevron.open{transform:rotate(180deg)}.cat-card-body{border-top:1px solid var(--border);padding:4px 0}.check-item{display:flex;align-items:flex-start;gap:12px;padding:12px 20px;border-bottom:1px solid var(--border);transition:background .12s}.check-item:last-child{border-bottom:none}.check-item:hover{background:var(--bg-subtle)}.check-status{width:22px;height:22px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;flex-shrink:0;margin-top:1px}.check-status.pass{background:var(--pass-bg);color:var(--pass);border:1px solid var(--pass-border)}.check-status.fail{background:var(--fail-bg);color:var(--fail);border:1px solid var(--fail-border)}.check-status.warn{background:var(--warn-bg);color:var(--warn);border:1px solid var(--warn-border)}.check-info{flex:1;min-width:0}.check-name{font-size:14px;font-weight:500;color:var(--text);margin-bottom:2px}.check-desc{font-size:12.5px;color:var(--text-muted)}.check-value{display:inline-block;margin-top:4px;font-size:11.5px;color:var(--text-light);font-family:var(--font-mono)}.check-learn{font-size:12px;color:var(--accent);flex-shrink:0;margin-top:2px;white-space:nowrap}.check-learn:hover{text-decoration:underline}.score-ring svg{transform:rotate(-90deg)}.score-ring-track{fill:none;stroke:var(--border)}.score-ring-fill{fill:none;stroke:var(--accent);stroke-linecap:round;transition:stroke-dashoffset 1s cubic-bezier(.4,0,.2,1)}.scanning-wrap{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:400px;gap:20px}.scanning-spinner{width:48px;height:48px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.scanning-title{font-size:18px;font-weight:600;color:var(--text)}.scanning-url{font-size:13px;color:var(--text-muted);font-family:var(--font-mono)}.scanning-progress{display:flex;flex-direction:column;gap:6px;width:320px}.scanning-step{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-muted);padding:8px 14px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg);animation:fadeInUp .3s ease forwards;opacity:0}.scanning-step.active{border-color:var(--accent);color:var(--accent);background:var(--accent-light)}.scanning-step.done{color:var(--pass);border-color:var(--pass-border);background:var(--pass-bg)}@keyframes fadeInUp{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.error-wrap{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:300px;gap:14px;text-align:center;padding:24px}.error-icon{font-size:40px}.error-title{font-size:18px;font-weight:600;color:var(--text)}.error-msg{font-size:13px;color:var(--text-muted);max-width:400px}.btn-primary{padding:10px 22px;background:var(--accent);color:#fff;border-radius:var(--radius-sm);font-size:14px;font-weight:600;transition:background .15s}.btn-primary:hover{background:var(--accent-dark)}.footer{border-top:1px solid var(--border);padding:24px;text-align:center;font-size:13px;color:var(--text-light)}.footer a{color:var(--text-muted)}.footer a:hover{color:var(--accent)}@media (max-width: 640px){.hero{padding:48px 16px 40px}.score-summary{gap:20px}.score-ring-wrap{margin:0 auto}.cat-score-pill .cat-progress-bar{display:none}.features{grid-template-columns:1fr}.check-item{flex-wrap:wrap}.check-learn{margin-top:4px}}