:root{--bg: #f7f9fc;--bg-card: #ffffff;--bg-soft: #eef6f5;--bg-input: #ffffff;--text: #172033;--text-muted: #627084;--border: #d9e2ec;--accent: #1677ff;--accent-hover: #0f5ed7;--green: #14945f;--yellow: #b7791f;--orange: #d65a21;--red: #d92d20;--radius: 8px;--shadow: 0 16px 42px rgba(23, 32, 51, .08)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.container{max-width:1200px;margin:0 auto;padding:0 24px}.header{background:#ffffffe6;border-bottom:1px solid var(--border);padding:14px 0;position:sticky;top:0;z-index:20;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.header-inner{display:flex;align-items:center;justify-content:space-between}.logo{font-size:20px;font-weight:700;color:var(--text)}.logo span{color:var(--accent)}.nav-links{display:flex;gap:8px;align-items:center;flex-wrap:wrap;justify-content:flex-end}.nav-links a{display:inline-flex;align-items:center;gap:6px;color:var(--text-muted);font-size:14px;font-weight:600;padding:8px 10px;border-radius:8px}.nav-links a:hover{color:var(--text);background:#eef4ff;text-decoration:none}.hero{text-align:center;padding:56px 0 44px}.app-hero{display:grid;grid-template-columns:minmax(0,1fr) 430px;gap:28px;align-items:center;text-align:left}.blog-hero{padding-bottom:20px}.hero-copy{max-width:720px}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:#0f766e;background:#e7f8f4;border:1px solid #bde7dd;padding:6px 10px;border-radius:999px;font-size:13px;font-weight:700;margin-bottom:14px}.hero h1{font-size:44px;line-height:1.14;font-weight:800;margin-bottom:16px;letter-spacing:0}.hero h1 span{color:var(--accent)}.hero p{font-size:17px;color:var(--text-muted);max-width:720px;margin:0 0 28px}.blog-hero .hero-copy{margin:0 auto;text-align:center}.blog-hero .hero p{margin-left:auto;margin-right:auto}.start-panel,.workflow-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}.panel-title{display:flex;align-items:flex-start;gap:12px;margin-bottom:18px}.panel-title svg{color:var(--accent);flex:0 0 auto;margin-top:3px}.panel-title h2{font-size:20px;line-height:1.25;margin-bottom:4px}.panel-title p{font-size:13px;color:var(--text-muted);margin:0}.url-form{display:flex;gap:12px;max-width:640px;margin:0 auto}.url-form.stacked{display:grid;max-width:none;margin:0}.url-input{flex:1;padding:14px 16px;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius);color:var(--text);font-size:16px;outline:none;transition:border-color .2s,box-shadow .2s}.url-input:focus{border-color:var(--accent);box-shadow:0 0 0 4px #1677ff1f}.url-input::placeholder{color:var(--text-muted)}.btn-analyze{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 22px;background:var(--accent);color:#fff;border:none;border-radius:var(--radius);font-size:16px;font-weight:700;cursor:pointer;transition:background .2s,transform .2s}.btn-analyze:hover{background:var(--accent-hover);transform:translateY(-1px)}.btn-analyze:disabled{opacity:.5;cursor:not-allowed}.options{max-width:640px;margin:16px auto 0;display:flex;gap:20px;justify-content:center}.segmented-options{max-width:none;display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:16px 0 0;border:none;padding:0}.segmented-options legend{font-size:13px;color:var(--text-muted);margin-bottom:8px;font-weight:700}.option-label{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--text-muted);cursor:pointer}.segmented-options .option-label{border:1px solid var(--border);border-radius:8px;padding:10px 12px;background:#f9fbfd;color:var(--text)}.segmented-options .option-label.selected{border-color:var(--accent);background:#eef6ff}.option-label input{accent-color:var(--accent)}.inline-check{display:flex;align-items:center;gap:8px;margin-top:14px;color:var(--text-muted);font-size:14px}.inline-check input{accent-color:var(--accent)}.section-heading{text-align:center;margin-bottom:20px}.section-heading h2,.tutorial-section h2,.optimizer-heading h2{font-size:28px;line-height:1.2;margin-bottom:8px}.section-heading p,.section-subtitle{color:var(--text-muted);margin:0}.quick-start,.tool-grid,.workflow-panel{margin:0 auto 56px}.step-grid,.tool-grid,.workflow-panel{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.workflow-panel{grid-template-columns:minmax(0,1.2fr) minmax(280px,.8fr)}.step-card,.tool-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:22px;box-shadow:0 8px 24px #1720330d}.step-card span,.step-badge{display:inline-flex;align-items:center;justify-content:center;min-width:30px;height:30px;padding:0 10px;border-radius:999px;background:#e7f8f4;color:#0f766e;font-weight:800;font-size:13px;margin-bottom:12px}.step-card h3,.tool-card h2{font-size:18px;margin-bottom:8px}.step-card p,.tool-card p{color:var(--text-muted);font-size:14px;margin:0}.tool-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.tool-card{color:var(--text)}.tool-card svg{color:var(--accent);margin-bottom:12px}.tool-card span{display:inline-flex;align-items:center;gap:6px;color:var(--accent);font-weight:700;margin-top:16px;font-size:14px}.tool-card:hover{text-decoration:none;border-color:var(--accent);transform:translateY(-2px);transition:.2s}.score-section{text-align:center;padding:40px 0}.score-gauge{position:relative;width:200px;height:200px;margin:0 auto 20px}.score-circle{width:200px;height:200px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-direction:column;border:8px solid var(--border);position:relative}.score-value{font-size:56px;font-weight:700;line-height:1}.score-grade{font-size:24px;color:var(--text-muted)}.score-label{font-size:14px;color:var(--text-muted);margin-top:8px}.dimensions{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:20px;margin:40px 0}.dim-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;transition:border-color .2s}.dim-card:hover{border-color:var(--accent)}.dim-header{display:flex;justify-content:space-between;align-items:start;margin-bottom:12px}.dim-name{font-size:16px;font-weight:600}.dim-weight{font-size:12px;color:var(--text-muted)}.dim-score-bar{height:8px;background:var(--border);border-radius:4px;overflow:hidden;margin:12px 0}.dim-score-fill{height:100%;border-radius:4px;transition:width .8s ease-out}.dim-score-value{font-size:28px;font-weight:700}.dim-grade{font-size:14px;color:var(--text-muted);margin-left:8px}.dim-findings-summary{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--text-muted)}.dim-badge{padding:2px 8px;border-radius:10px;font-size:11px;font-weight:500}.dim-badge-issue{background:#f973161f;color:var(--orange)}.dim-badge-pass{background:#22c55e1f;color:var(--green)}.dim-badge-info{background:#3b82f61f;color:var(--accent)}.dim-toggle{background:none;border:none;color:var(--accent);cursor:pointer;font-size:12px;padding:2px 6px;margin-left:auto}.dim-toggle:hover{text-decoration:underline}.dim-findings-list{margin-top:12px;display:flex;flex-direction:column;gap:8px}.dim-finding-item{padding:10px 12px;border-radius:8px;font-size:13px;background:#f9fbfd;border:1px solid var(--border)}.dim-finding-item.sev-bg-critical{border-left:3px solid var(--red)}.dim-finding-item.sev-bg-warning{border-left:3px solid var(--orange)}.dim-finding-item.sev-bg-info{border-left:3px solid var(--accent)}.dim-finding-item.sev-bg-pass{border-left:3px solid var(--green)}.dim-finding-header{display:flex;align-items:center;gap:8px;margin-bottom:4px}.dim-finding-icon{width:18px;height:18px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:9px;font-weight:700;flex-shrink:0}.dim-finding-icon.sev-critical{background:#ef444433;color:var(--red)}.dim-finding-icon.sev-warning{background:#f9731633;color:var(--orange)}.dim-finding-icon.sev-info{background:#3b82f633;color:var(--accent)}.dim-finding-icon.sev-pass{background:#22c55e33;color:var(--green)}.dim-finding-title{font-weight:500;flex:1}.dim-finding-severity{font-size:10px;padding:1px 6px;border-radius:8px;font-weight:500}.dim-finding-desc{color:var(--text-muted);font-size:12px;padding-left:26px}.recs{margin:40px 0}.recs h2{font-size:24px;font-weight:600;margin-bottom:20px}.rec-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin-bottom:12px}.rec-header{display:flex;align-items:center;gap:12px;margin-bottom:8px}.rec-severity{padding:2px 10px;border-radius:20px;font-size:11px;font-weight:600;text-transform:uppercase}.sev-critical{background:#ef444426;color:var(--red)}.sev-warning{background:#f9731626;color:var(--orange)}.sev-info{background:#3b82f626;color:var(--accent)}.sev-pass{background:#22c55e26;color:var(--green)}.rec-title{font-weight:600;font-size:15px}.rec-desc{color:var(--text-muted);font-size:14px;margin-bottom:8px}.rec-action{background:#eef6ff;border-left:3px solid var(--accent);padding:10px 14px;border-radius:0 8px 8px 0;font-size:13px;color:var(--text)}.rec-pages{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin-bottom:10px;font-size:12px}.rec-pages-label{color:var(--text-muted);font-size:12px}.rec-page-tag{background:#3b82f61a;color:var(--accent);padding:2px 8px;border-radius:4px;font-size:11px;font-family:monospace}.progress-section{text-align:center;padding:60px 0}.progress-bar{width:100%;max-width:500px;height:8px;background:var(--border);border-radius:4px;margin:20px auto;overflow:hidden}.progress-fill{height:100%;background:linear-gradient(90deg,var(--accent),#60a5fa,var(--accent));background-size:200% 100%;border-radius:4px;transition:width .5s;animation:shimmer 2s ease-in-out infinite}.progress-step{color:var(--text-muted);font-size:14px;animation:fadeInUp .4s ease-out}.progress-pct{font-size:36px;font-weight:700;color:var(--accent)}.spinner{width:48px;height:48px;border:4px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite;margin:0 auto 24px}.progress-ring{position:relative;display:inline-block;padding:18px}.progress-ring:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;border-radius:50%;border:3px solid var(--accent);opacity:.3;animation:pulse-ring 2s ease-out infinite}.dots:after{content:"";animation:dots-anim 1.5s steps(4,end) infinite}.analysis-steps{max-width:400px;margin:28px auto 0;text-align:left}.analysis-step-item{display:flex;align-items:center;gap:12px;padding:8px 0;font-size:13px;color:var(--text-muted);transition:color .3s,opacity .3s}.analysis-step-item.active{color:var(--accent);font-weight:500}.analysis-step-item.done{color:var(--green)}.step-icon{width:20px;height:20px;border-radius:50%;border:2px solid var(--border);display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:10px;transition:all .3s}.analysis-step-item.active .step-icon{border-color:var(--accent);animation:pulse-ring 2s ease-out infinite}.analysis-step-item.done .step-icon{border-color:var(--green);background:var(--green);color:#fff}.skeleton-block{background:linear-gradient(90deg,var(--bg-card) 25%,var(--border) 50%,var(--bg-card) 75%);background-size:200% 100%;animation:shimmer 1.5s ease-in-out infinite;border-radius:var(--radius);height:20px;margin:10px auto}@keyframes spin{to{transform:rotate(360deg)}}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}@keyframes pulse-ring{0%{transform:scale(1);opacity:.3}50%{transform:scale(1.15);opacity:.1}to{transform:scale(1);opacity:.3}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes dots-anim{0%{content:""}25%{content:"."}50%{content:".."}75%{content:"..."}}.history-table{width:100%;border-collapse:collapse;margin:20px 0}.history-table th{text-align:left;padding:12px 16px;border-bottom:1px solid var(--border);color:var(--text-muted);font-size:13px;font-weight:500}.history-table td{padding:12px 16px;border-bottom:1px solid var(--border);font-size:14px}.history-table tr:hover td{background:#3b82f60d}.error-box{background:#ef44441a;border:1px solid var(--red);border-radius:var(--radius);padding:20px;text-align:center;margin:20px 0}.error-box h3{color:var(--red);margin-bottom:8px}.radar-section{max-width:500px;margin:30px auto}.back-link{display:inline-flex;align-items:center;gap:6px;color:var(--text-muted);font-size:14px;margin-bottom:20px}.optimizer-panel,.tutorial-section{max-width:1100px;margin:0 auto 80px}.optimizer-heading{display:flex;justify-content:space-between;gap:20px;align-items:end;margin-bottom:18px}.optimizer-heading h2,.tutorial-section h2{font-size:26px;margin-bottom:8px}.optimizer-heading p{color:var(--text-muted);max-width:720px}.key-notice{display:grid;grid-template-columns:auto 1fr;gap:12px;background:#fff7e6;border:1px solid #f3d19e;border-radius:8px;padding:16px 18px;color:var(--text);font-size:14px;margin-bottom:18px}.key-notice>svg{color:var(--yellow);margin-top:2px}.key-notice p{margin:0}.key-notice strong{color:var(--yellow)}.privacy-note{grid-column:2;display:inline-flex;align-items:center;gap:6px;color:var(--text-muted);font-size:13px}.optimizer-grid{display:grid;grid-template-columns:minmax(280px,.85fr) minmax(360px,1.15fr);gap:20px}.optimizer-card,.optimizer-result,.tutorial-card{background:var(--bg-card);border:1px solid var(--border);border-radius:8px;padding:22px}.optimizer-card h3,.tutorial-card h3{display:flex;align-items:center;gap:8px;font-size:17px;margin-bottom:16px}.optimizer-card h3 svg{color:var(--accent)}.form-label{display:flex;flex-direction:column;gap:7px;color:var(--text-muted);font-size:13px;margin-bottom:14px}.form-control{width:100%;background:var(--bg-input);border:1px solid var(--border);border-radius:8px;color:var(--text);font:inherit;padding:11px 12px;outline:none}.form-control:focus{border-color:var(--accent);box-shadow:0 0 0 4px #1677ff1f}.article-textarea{min-height:260px;resize:vertical;line-height:1.6}.optimizer-submit{width:100%;margin-top:2px}.submit-hint{color:var(--text-muted);font-size:12px;margin-top:8px}.mini-help{background:#eef6ff;border:1px solid #c9ddff;border-radius:8px;padding:12px;color:var(--text-muted);font-size:13px}.mini-help strong{display:block;color:var(--text);margin-bottom:2px}.security-reminder{border:2px solid #ff4d4f;border-radius:4px;color:#ff4d4f;padding:18px 20px;margin-top:14px;font-size:15px;line-height:1.55;background:#fff}.security-reminder strong{display:block;margin-bottom:8px;font-size:16px}.security-reminder span{display:block}.optimizer-error{margin-top:12px;color:var(--red);font-size:13px}.optimizer-result{margin-top:20px}.result-header{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:14px}.result-header h3{font-size:18px}.result-header button{border:1px solid var(--border);background:var(--bg-card);color:var(--text);border-radius:8px;padding:8px 12px;cursor:pointer}.optimizer-result pre{white-space:pre-wrap;word-break:break-word;background:#f8fafc;border:1px solid var(--border);border-radius:8px;padding:18px;color:var(--text);line-height:1.7;max-height:720px;overflow:auto}.tutorial-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:20px}.tutorial-card p{color:var(--text-muted);font-size:13px}.mock-shot{background:#f7fafc;border:1px solid var(--border);border-radius:8px;padding:12px;min-height:170px;margin-bottom:16px}.mock-bar{display:flex;gap:5px;margin-bottom:14px}.mock-bar span{width:8px;height:8px;border-radius:50%;background:#9fb1c7}.mock-line,.mock-input,.mock-select,.mock-textarea,.mock-button,.mock-result{border-radius:6px;background:#fff;border:1px solid var(--border);margin-bottom:10px}.mock-line{height:14px;width:78%}.mock-line.wide{width:92%}.mock-line.short{width:55%}.mock-input,.mock-select{padding:10px 12px;color:#94a3b8;font-size:12px}.mock-textarea{height:84px}.mock-button{width:130px;padding:10px;color:#fff;background:var(--accent);border-color:var(--accent);text-align:center;font-size:12px;font-weight:600}.mock-result{height:54px}.mock-result.small{height:28px;width:70%}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}.guide-card{box-shadow:none}.check-list{list-style:none;display:grid;gap:12px;padding:0;margin:0}.check-list li{display:flex;align-items:flex-start;gap:10px;color:var(--text);font-size:14px}.check-list svg{color:var(--green);flex:0 0 auto;margin-top:2px}.error-box.compact{text-align:left;padding:14px;margin:14px 0 0}@media(max-width:980px){.app-hero,.workflow-panel,.tool-grid,.step-grid{grid-template-columns:1fr 1fr}.app-hero{text-align:center}.hero-copy{margin:0 auto}.hero p{margin-left:auto;margin-right:auto}.start-panel{text-align:left}}@media(max-width:768px){.hero h1{font-size:32px}.hero{padding-top:36px}.url-form{flex-direction:column}.dimensions,.optimizer-grid{grid-template-columns:1fr}.optimizer-heading{align-items:start;flex-direction:column}.app-hero,.workflow-panel,.tool-grid,.step-grid,.segmented-options{grid-template-columns:1fr}.header-inner{align-items:flex-start;gap:12px;flex-direction:column}.nav-links{justify-content:flex-start}.nav-links a{padding:6px 8px}.key-notice{grid-template-columns:1fr}.privacy-note{grid-column:1}}
