/* ===== Reset ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;line-height:1.6;color:#1e293b;background:#f8fafc;overflow-x:hidden}
.autocomplete-wrapper{position:relative;flex:1;min-width:180px;z-index:50}
.autocomplete-dropdown{position:absolute;top:100%;left:0;right:0;background:#1e1b4b;border:1px solid #4c1d95;border-radius:0 0 8px 8px;max-height:260px;overflow-y:auto;z-index:200;display:none;box-shadow:0 12px 32px rgba(0,0,0,.4)}
.autocomplete-dropdown.active{display:block}
.autocomplete-item{padding:10px 16px;font-size:0.88rem;color:#e2e8f0;cursor:pointer;border-bottom:1px solid #2d1b6e;transition:background .1s}
.autocomplete-item:last-child{border-bottom:none}
.autocomplete-item:hover,.autocomplete-item.selected{background:#4c1d95;color:#fff}
.autocomplete-empty{padding:10px 16px;font-size:0.85rem;color:#94a3b8}
a{color:inherit;text-decoration:none}
ul{list-style:none}
img{max-width:100%}

/* ===== Layout ===== */
.container{max-width:1120px;margin:0 auto;padding:0 20px}

/* ===== Header ===== */
.site-header{background:#0f172a;color:#fff}
.site-header .container{display:flex;justify-content:space-between;align-items:center;height:60px}
.site-logo{font-size:1.15rem;font-weight:700;color:#fff;letter-spacing:-0.3px}
.site-logo span{color:#38bdf8}
.site-nav{display:flex;gap:28px;font-size:0.9rem}
.site-nav a{color:#94a3b8;transition:color .15s;padding:4px 0;border-bottom:2px solid transparent}
.site-nav a:hover,.site-nav a.active{color:#fff;border-bottom-color:#38bdf8}

/* ===== Breadcrumb ===== */
.breadcrumb{background:#fff;border-bottom:1px solid #e2e8f0}
.breadcrumb .container{display:flex;align-items:center;height:40px;gap:8px;font-size:0.84rem;color:#64748b}
.breadcrumb a{color:#475569}
.breadcrumb a:hover{color:#2563eb}
.breadcrumb .sep{color:#cbd5e1}
.breadcrumb .current{color:#1e293b;font-weight:500}

/* ===== Hero ===== */
.hero{background:linear-gradient(135deg,#0f172a 0%,#1e3a5f 50%,#0f172a 100%);color:#fff;padding:56px 20px 48px;text-align:center;margin-left:calc(-50vw + 50%);margin-right:calc(-50vw + 50%)}
.hero h1{font-size:2.2rem;font-weight:800;letter-spacing:-0.5px;margin-bottom:8px;line-height:1.25;max-width:1120px;margin-left:auto;margin-right:auto}
.hero h1 span{color:#38bdf8}
.hero p{font-size:1.1rem;color:#94a3b8;max-width:620px;margin:0 auto 28px;line-height:1.6}
.hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.stats-bar{margin-left:calc(-50vw + 50%);margin-right:calc(-50vw + 50%);padding-left:20px;padding-right:20px}
.btn{padding:12px 26px;border-radius:8px;font-size:0.95rem;font-weight:600;cursor:pointer;transition:all .15s;border:none;display:inline-flex;align-items:center;gap:6px}
.btn-primary{background:#2563eb;color:#fff}
.btn-primary:hover{background:#1d4ed8;transform:translateY(-1px);box-shadow:0 4px 12px rgba(37,99,235,.35)}
.btn-outline{background:transparent;color:#e2e8f0;border:1.5px solid #475569}
.btn-outline:hover{border-color:#94a3b8;color:#fff}

/* ===== Stats Bar ===== */
.stats-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:0;background:#fff;border-bottom:1px solid #e2e8f0}
.stat-item{text-align:center;padding:24px 16px;border-right:1px solid #f1f5f9}
.stat-item:last-child{border-right:none}
.stat-icon{font-size:1.5rem;margin-bottom:4px}
.stat-number{font-size:1.8rem;font-weight:800;color:#0f172a;line-height:1.1}
.stat-label{font-size:0.82rem;color:#64748b;margin-top:2px}

/* ===== Sections ===== */
.section{padding:44px 0}
.section-alt{position:relative;background:transparent}
.section-alt::before{content:'';position:absolute;top:0;bottom:0;left:-50vw;right:-50vw;background:#fff;border-top:1px solid #e2e8f0;border-bottom:1px solid #e2e8f0;z-index:-1}
.section-header{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:24px}
.section-title{font-size:1.25rem;font-weight:700;color:#0f172a}
.section-link{font-size:0.9rem;color:#2563eb;font-weight:500}
.section-link:hover{text-decoration:underline}
.section-subtitle{font-size:0.82rem;color:#94a3b8;margin-left:10px}

/* ===== ICS Grid ===== */
.ics-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.ics-card{background:#fff;border:1px solid #e2e8f0;border-radius:10px;padding:22px 20px;transition:all .15s}
.ics-card:hover{border-color:#93c5fd;box-shadow:0 4px 16px rgba(0,0,0,.06);transform:translateY(-2px)}
.ics-card__code{font-family:'SF Mono','Fira Code',monospace;font-size:0.8rem;color:#2563eb;font-weight:600;margin-bottom:4px}
.ics-card__name{font-size:0.95rem;font-weight:600;color:#1e293b;margin-bottom:6px;line-height:1.3}
.ics-card__count{font-size:0.82rem;color:#64748b}

/* ===== Type Grid ===== */
.type-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.type-card{background:#fff;border:1px solid #e2e8f0;border-radius:10px;padding:22px 20px;text-align:center;transition:all .15s}
.type-card:hover{border-color:#93c5fd;box-shadow:0 4px 16px rgba(0,0,0,.06);transform:translateY(-2px)}
.type-card__icon{font-size:1.6rem;margin-bottom:8px}
.type-card__name{font-size:0.9rem;font-weight:600;color:#1e293b}

/* ===== Influence List ===== */
.influence-list{background:#fff;border:1px solid #e2e8f0;border-radius:10px;overflow:hidden}
.influence-item{display:flex;align-items:center;gap:16px;padding:16px 20px;border-bottom:1px solid #f1f5f9;transition:background .15s}
.influence-item:last-child{border-bottom:none}
.influence-item:hover{background:#f8fafc}
.influence-rank{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:0.9rem;flex-shrink:0}
.influence-rank.gold{background:#fef3c7;color:#b45309}
.influence-rank.silver{background:#f1f5f9;color:#64748b}
.influence-rank.bronze{background:#fef2f2;color:#b91c1c}
.influence-info{flex:1;min-width:0}
.influence-info__title{font-weight:600;color:#1e293b;font-size:0.95rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.influence-info__publisher{font-size:0.82rem;color:#64748b}
.influence-citations{font-size:0.82rem;color:#64748b;text-align:right;flex-shrink:0}
.influence-citations strong{color:#0f172a;font-size:1.05rem}

/* ===== Standard Item (list) ===== */
.standard-item{display:flex;align-items:flex-start;gap:20px;padding:20px;background:#fff;border:1px solid #e2e8f0;border-radius:8px;margin-bottom:12px;transition:all .15s}
.standard-item:hover{border-color:#93c5fd;box-shadow:0 2px 12px rgba(0,0,0,.04)}
.standard-item__badge{flex-shrink:0;padding:4px 10px;border-radius:4px;font-size:0.75rem;font-weight:600;margin-top:2px}
.standard-item__icon{flex-shrink:0;font-size:1.5rem;margin-top:2px;opacity:0.6;width:36px;text-align:center}
.badge-intl{background:#dbeafe;color:#1d4ed8}
.badge-tech{background:#fef3c7;color:#b45309}
.badge-guide{background:#dcfce7;color:#16a34a}
.standard-item__content{flex:1;min-width:0}
.standard-item__title{font-size:1rem;font-weight:600;color:#1e293b;margin-bottom:4px}
.standard-item__title a{color:inherit}
.standard-item__title a:hover{color:#2563eb}
.standard-item__meta{font-size:0.82rem;color:#64748b;display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.standard-item__number{font-family:'SF Mono','Fira Code',monospace;font-size:0.8rem;color:#475569;background:#f1f5f9;padding:2px 8px;border-radius:4px}
.standard-item__summary{font-size:0.88rem;color:#64748b;margin-top:6px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.standard-item__arrow{flex-shrink:0;color:#94a3b8;font-size:1.2rem;margin-top:4px}

/* ===== Pagination ===== */
.pagination{display:flex;justify-content:center;align-items:center;gap:6px;padding:32px 0 0}
.pagination a,.pagination span{display:inline-flex;align-items:center;justify-content:center;min-width:38px;height:38px;padding:0 10px;border-radius:8px;font-size:0.9rem;font-weight:500}
.pagination a{color:#475569;border:1px solid #e2e8f0}
.pagination a:hover{background:#f1f5f9;border-color:#cbd5e1}
.pagination .current{background:#2563eb;color:#fff;border-color:#2563eb;font-weight:700}
.pagination .gap{color:#94a3b8;border:none}

/* ===== Footer ===== */
.site-footer{background:#fff;border-top:1px solid #e2e8f0;padding:20px 0;font-size:0.84rem;color:#94a3b8}
.site-footer .container{display:flex;justify-content:space-between;align-items:center}
.footer-nav{display:flex;gap:20px}
.footer-nav a{color:#64748b}
.footer-nav a:hover{color:#0f172a}

/* ========== DETAIL PAGE ========== */
.detail-layout{display:grid;grid-template-columns:1fr 300px;gap:32px;padding:32px 0}
.detail-main{min-width:0}

/* Badges */
.badge-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.badge{display:inline-flex;align-items:center;gap:4px;padding:5px 12px;border-radius:6px;font-size:0.8rem;font-weight:600}
.badge-type{background:#dbeafe;color:#1d4ed8}
.badge-status-valid{background:#dcfce7;color:#16a34a;font-size:0.75rem;padding:2px 8px;border-radius:3px}
.badge-status-replaced{background:#fee2e2;color:#b91c1c;font-size:0.75rem;padding:2px 8px;border-radius:3px}
.badge-ics{background:#f1f5f9;color:#475569}
.badge-cited{background:#fef3c7;color:#b45309}

/* Title */
.std-title-block{margin-bottom:20px}
.std-title-block h1{font-size:1.7rem;font-weight:800;color:#0f172a;line-height:1.3;letter-spacing:-0.3px;margin-bottom:10px}

/* Key Takeaways */
.key-takeaways{background:linear-gradient(135deg,#eff6ff 0%,#f0f9ff 100%);border:1px solid #bfdbfe;border-radius:10px;padding:20px 24px;margin-bottom:24px}
.key-takeaways h3{font-size:0.9rem;font-weight:700;color:#1d4ed8;margin-bottom:8px}
.key-takeaways p{font-size:0.92rem;color:#1e40af;line-height:1.6}

/* Version Timeline */
.version-timeline{background:#fff;border:1px solid #e2e8f0;border-radius:10px;padding:20px 24px;margin-bottom:24px}
.version-timeline h3{font-size:0.95rem;font-weight:700;color:#0f172a;margin-bottom:14px}
.timeline-track{display:flex;align-items:flex-start;justify-content:center;gap:0;position:relative;padding:10px 20px}
.timeline-track::before{content:'';position:absolute;top:18px;left:0;right:0;height:2px;background:#e2e8f0;z-index:0}
.timeline-node{display:flex;flex-direction:column;align-items:center;gap:8px;position:relative;z-index:1;flex:1;min-width:0}
.timeline-dot{width:14px;height:14px;border-radius:50%;flex-shrink:0}
.timeline-dot.current{width:16px;height:16px;background:#2563eb;border:3px solid #bfdbfe;box-shadow:0 0 0 4px #dbeafe}
.timeline-dot.available{background:#10b981;border:2px solid #a7f3d0}
.timeline-dot.unavailable{background:#cbd5e1;border:2px solid #e2e8f0}
.timeline-label{font-size:0.76rem;color:#64748b;text-align:center;line-height:1.3}
.timeline-label a{color:#2563eb;font-weight:500}
.timeline-label a:hover{text-decoration:underline}
.timeline-label .nolink{color:#94a3b8}

/* Metadata */
.meta-card{background:#fff;border:1px solid #e2e8f0;border-radius:10px;padding:24px;margin-bottom:24px}
.meta-card h3{font-size:0.95rem;font-weight:700;color:#0f172a;margin-bottom:16px}
.meta-grid{display:grid;grid-template-columns:140px 1fr;gap:10px 20px;font-size:0.88rem}
.meta-grid dt{font-weight:600;color:#64748b}
.meta-grid dd{color:#1e293b;line-height:1.5}
.meta-grid .nolink{color:#94a3b8}
.meta-grid a{color:#2563eb;font-weight:500}
.meta-grid a:hover{text-decoration:underline}

/* Interpretation */
.interp-section{margin-bottom:24px}
.interp-section h2{font-size:1.25rem;font-weight:700;color:#0f172a;margin-bottom:16px;padding-bottom:8px;border-bottom:2px solid #e2e8f0}
.interp-desc{font-size:0.92rem;color:#64748b;margin-bottom:16px;line-height:1.6}
.interp-body{background:#fff;border:1px solid #e2e8f0;border-radius:10px;padding:28px;margin-bottom:20px;font-size:0.93rem;line-height:1.75}
.interp-body h2,.interp-body h3{font-size:1.05rem;font-weight:700;color:#0f172a;margin:24px 0 10px}
.interp-body h2:first-child,.interp-body h3:first-child{margin-top:0}
.interp-body p{color:#475569;margin-bottom:14px}
.interp-body hr{margin:20px 0;border:none;border-top:1px solid #e2e8f0}
.interp-body table{width:100%;border-collapse:collapse;margin:16px 0;font-size:0.88rem}
.interp-body th{background:#f1f5f9;padding:10px 14px;text-align:left;font-weight:600;color:#475569;border:1px solid #e2e8f0}
.interp-body td{padding:10px 14px;border:1px solid #e2e8f0;color:#475569}
.interp-body strong{color:#1e293b}

/* Scope */
.scope-section{background:#fff;border:1px solid #e2e8f0;border-radius:10px;padding:24px;margin-bottom:24px}
.scope-section h3{font-size:0.95rem;font-weight:700;color:#0f172a;margin-bottom:10px}
.scope-section p{font-size:0.92rem;color:#475569;line-height:1.75}

/* Citation Network */
.cite-network{background:#fff;border:1px solid #e2e8f0;border-radius:10px;padding:24px;margin-bottom:24px}
.cite-network h3{font-size:0.95rem;font-weight:700;color:#0f172a;margin-bottom:16px}
.cite-stats{display:flex;gap:24px;margin-bottom:18px}
.cite-stat{padding:12px 16px;background:#f8fafc;border-radius:8px}
.cite-stat__num{font-size:1.3rem;font-weight:800;color:#0f172a}
.cite-stat__label{font-size:0.78rem;color:#64748b}
.cite-viz{background:#f8fafc;border:1px dashed #cbd5e1;border-radius:8px;padding:24px;text-align:center}
.cite-section-label{font-size:0.8rem;color:#94a3b8;margin-bottom:8px;font-weight:500}
.cite-nodes{display:flex;flex-wrap:wrap;justify-content:center;gap:6px;margin-bottom:6px}
.cite-node{display:inline-block;background:#fff;border:1.5px solid #2563eb;color:#2563eb;border-radius:6px;padding:6px 14px;font-weight:600;font-size:0.82rem}
.cite-node:hover{background:#eff6ff}
.cite-node.self{background:#dbeafe;border-color:#1d4ed8;color:#1d4ed8}
.cite-node.nolink{background:#f1f5f9;border-color:#e2e8f0;color:#94a3b8;cursor:default}
.cite-arrow{color:#94a3b8;font-size:0.85rem;margin:6px 0}

/* FAQ */
.faq-section{margin-bottom:24px}
.faq-section h2{font-size:1.25rem;font-weight:700;color:#0f172a;margin-bottom:16px;padding-bottom:8px;border-bottom:2px solid #e2e8f0}
.faq-item{background:#fff;border:1px solid #e2e8f0;border-radius:10px;margin-bottom:8px;overflow:hidden}
.faq-q{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;cursor:pointer;font-weight:600;font-size:0.92rem;color:#1e293b;user-select:none}
.faq-q:hover{background:#f8fafc}
.faq-q::after{content:'+';font-size:1.2rem;color:#94a3b8;font-weight:400}
.faq-a{padding:0 20px 16px;font-size:0.88rem;color:#64748b;line-height:1.65;display:none}
.faq-item.open .faq-a{display:block}
.faq-item.open .faq-q::after{content:'\2013';font-size:1.4rem}

/* CTA */
.cta-block{text-align:center;margin:32px 0}
.cta-btn{display:inline-flex;align-items:center;gap:8px;background:#dc2626;color:#fff;padding:16px 36px;border-radius:10px;font-size:1.05rem;font-weight:700;transition:all .15s}
.cta-btn:hover{background:#b91c1c;transform:translateY(-2px);box-shadow:0 6px 20px rgba(220,38,38,.3)}

/* ===== Sidebar ===== */
.sidebar{position:sticky;top:20px}
.sidebar-card{background:#fff;border:1px solid #e2e8f0;border-radius:10px;padding:20px;margin-bottom:16px}
.sidebar-card h4{font-size:0.85rem;font-weight:700;color:#94a3b8;text-transform:uppercase;letter-spacing:0.5px;margin-bottom:12px}
.sidebar-link{display:block;padding:8px 0;font-size:0.88rem;color:#1e293b;border-bottom:1px solid #f1f5f9;transition:color .1s}
.sidebar-link:last-child{border-bottom:none}
.sidebar-link:hover{color:#2563eb}
.sidebar-link .meta{font-size:0.76rem;color:#94a3b8;display:block}
.sidebar-link.nolink{color:#94a3b8;cursor:default}
.sidebar-link.nolink .meta{color:#cbd5e1}

.sidebar-cta{background:linear-gradient(135deg,#dc2626 0%,#b91c1c 100%);color:#fff;border-radius:10px;padding:20px;text-align:center}
.sidebar-cta h4{font-size:0.95rem;font-weight:700;margin-bottom:6px}
.sidebar-cta p{font-size:0.82rem;opacity:0.9;margin-bottom:12px}
.sidebar-cta a{display:block;background:#fff;color:#dc2626;padding:10px;border-radius:6px;font-weight:700;font-size:0.88rem}
.sidebar-cta a:hover{background:#fef2f2}

/* ===== Category Header ===== */
.cat-header{padding:32px 0;margin-bottom:0}
.cat-code{font-family:'SF Mono','Fira Code',monospace;font-size:0.85rem;color:#2563eb;font-weight:600;margin-bottom:4px}
.cat-header h1{font-size:1.6rem;font-weight:700;color:#0f172a;margin-bottom:6px}
.cat-desc{font-size:0.95rem;color:#64748b;max-width:640px;line-height:1.6}
.cat-meta{display:flex;gap:24px;margin-top:16px;font-size:0.88rem}
.cat-meta-item{display:flex;align-items:center;gap:6px;color:#475569}
.cat-meta-item strong{color:#0f172a}

/* ===== Sub-category Grid ===== */
.subcat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.subcat-card{background:#fff;border:1px solid #e2e8f0;border-radius:8px;padding:18px 20px;transition:all .15s}
.subcat-card:hover{border-color:#93c5fd;box-shadow:0 2px 10px rgba(0,0,0,.04)}
.subcat-card__code{font-family:'SF Mono','Fira Code',monospace;font-size:0.78rem;color:#2563eb;font-weight:600}
.subcat-card__name{font-size:0.9rem;font-weight:600;color:#1e293b;margin:2px 0}
.subcat-card__count{font-size:0.8rem;color:#64748b}

/* ===== Error Pages ===== */
.error-page{text-align:center;padding:80px 0}
.error-page h1{font-size:2rem;color:#555}

/* ===== Static Pages ===== */
.static-page{padding:24px 0;max-width:720px}
.static-page h1{font-size:1.8rem;margin-bottom:24px}
.static-page h2{font-size:1.2rem;margin:24px 0 12px;color:#444}
.static-page p{line-height:1.7;color:#555;margin:12px 0}

/* ===== Cookie Banner ===== */
.cookie-banner{position:fixed;bottom:0;left:0;right:0;background:#1a1a2e;color:#fff;padding:16px 20px;display:flex;align-items:center;gap:16px;font-size:0.9rem;z-index:1000}
.cookie-banner p{margin:0;flex:1}
.cookie-banner button{background:#e63946;color:#fff;border:none;padding:8px 16px;border-radius:4px;cursor:pointer}
.cookie-banner a{color:#ccc}

/* ===== Sales Page ===== */
.sales-standard-info{background:#f9f9f9;padding:16px;border-radius:6px;margin:24px 0}
.sales-standard-info dl{display:grid;grid-template-columns:180px 1fr;gap:8px}
.sales-standard-info dt{font-weight:bold;color:#555}
.sales-standard-info dd{margin:0}
.sales-box{background:#fff;border:2px solid #e63946;border-radius:8px;padding:32px;margin:32px 0}
.sales-price{text-align:center;margin-bottom:24px}
.sales-price__label{display:block;font-size:0.95rem;color:#888;margin-bottom:4px}
.sales-price__value{display:block;font-size:2rem;font-weight:bold;color:#e63946}
.sales-contact{text-align:center}
.sales-email a{font-size:1.1rem;color:#1a73e8}
.sales-process{margin:32px 0;padding:20px;background:#f0f7ff;border-radius:6px}
.sales-process ol{padding-left:20px}
.sales-process li{margin:8px 0}
.sales-back{margin:24px 0}

/* ===== Topic Page ===== */
.topic-header{padding:32px 0 16px}
.topic-header h1{font-size:1.8rem;margin:0 0 8px}
.topic-header p{color:#666}

/* ===== Responsive ===== */
@media(max-width:860px){
    .detail-layout{grid-template-columns:1fr}
    .sidebar{position:static}
    .ics-grid{grid-template-columns:repeat(2,1fr)}
    .type-grid{grid-template-columns:repeat(2,1fr)}
    .stats-bar{grid-template-columns:repeat(2,1fr)}
    .subcat-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
    .meta-grid{grid-template-columns:1fr}
    .meta-grid dt{margin-top:8px}
    .site-header .container{flex-direction:column;height:auto;padding:12px 20px;gap:8px}
    .sales-standard-info dl{grid-template-columns:1fr}
    .sales-box{padding:20px}
}
@media(max-width:480px){
    .ics-grid,.type-grid,.stats-bar,.subcat-grid{grid-template-columns:1fr}
    .hero h1{font-size:1.5rem}
    .standard-item{flex-direction:column;gap:10px}
}
/* ===== Site B: Standards Compare ===== */
/* Purple theme (#7c3aed) — designed to complement main.css */

/* Override header accent */
.site-logo span{color:#a78bfa}
.site-nav a:hover,.site-nav a.active{color:#fff;border-bottom-color:#a78bfa}
.breadcrumb a:hover{color:#7c3aed}

/* ===== Hero ===== */
.sb-hero{background:linear-gradient(135deg,#0f172a 0%,#2e1065 50%,#0f172a 100%);color:#fff;padding:56px 20px 48px;text-align:center;margin-left:calc(-50vw + 50%);margin-right:calc(-50vw + 50%)}
.sb-hero h1{font-size:2rem;font-weight:800;letter-spacing:-0.5px;margin-bottom:8px;line-height:1.25;max-width:1120px;margin-left:auto;margin-right:auto}
.sb-hero h1 span{color:#a78bfa}
.sb-hero>p{font-size:1.05rem;color:#c4b5fd;max-width:560px;margin:0 auto 28px;line-height:1.6}

/* Comparison input bar */
.compare-bar{max-width:760px;margin:0 auto;background:#1e1b4b;border:1px solid #4c1d95;border-radius:12px;padding:24px}
.compare-bar__label{font-size:0.85rem;color:#a78bfa;font-weight:600;margin-bottom:12px;text-transform:uppercase;letter-spacing:1px}
.compare-inputs{display:flex;gap:12px;align-items:end;flex-wrap:wrap}
.compare-input{flex:1;min-width:180px;padding:12px 16px;border:1px solid #4c1d95;border-radius:8px;background:#0f172a;color:#e2e8f0;font-size:0.95rem;font-family:inherit}
.compare-input:focus{outline:none;border-color:#a78bfa;box-shadow:0 0 0 3px rgba(167,139,250,.15)}
.compare-vs{color:#7c3aed;font-weight:800;font-size:1.1rem;padding-bottom:12px}
.compare-btn{padding:12px 28px;background:#7c3aed;color:#fff;border:none;border-radius:8px;font-size:0.95rem;font-weight:600;cursor:pointer;white-space:nowrap;transition:all .15s}
.compare-btn:hover{background:#6d28d9;transform:translateY(-1px);box-shadow:0 4px 16px rgba(124,58,237,.35)}

/* ===== Stats Bar ===== */
.stats-bar{display:grid;grid-template-columns:repeat(3,1fr);background:#fff;border-bottom:1px solid #e2e8f0;margin-left:calc(-50vw + 50%);margin-right:calc(-50vw + 50%);padding:0 20px;overflow:hidden}
.stat-item{text-align:center;padding:22px 16px;border-right:1px solid #f1f5f9}
.stat-item:last-child{border-right:none}
.stat-icon{font-size:1.4rem;margin-bottom:4px}
.stat-number{font-size:1.7rem;font-weight:800;color:#0f172a;line-height:1.1}
.stat-label{font-size:0.8rem;color:#64748b;margin-top:2px}

/* ===== Sections ===== */
.sb-section{padding:40px 0}
.sb-section-alt{position:relative;background:transparent}
.sb-section-alt::before{content:'';position:absolute;top:0;bottom:0;left:-50vw;right:-50vw;background:#fff;border-top:1px solid #e2e8f0;border-bottom:1px solid #e2e8f0;z-index:-1}
.section-header{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:24px}
.section-title{font-size:1.15rem;font-weight:700;color:#0f172a}
.section-link{font-size:0.9rem;color:#7c3aed;font-weight:500}
.section-link:hover{text-decoration:underline}

/* ===== Comparison cards grid ===== */
.comp-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.comp-card{background:#fff;border:1px solid #e2e8f0;border-radius:10px;padding:18px;transition:all .15s}
.comp-card:hover{border-color:#c4b5fd;box-shadow:0 4px 16px rgba(124,58,237,.08);transform:translateY(-2px)}
.comp-card__vs{display:flex;align-items:center;gap:8px;margin-bottom:8px}
.comp-card__std{font-weight:600;font-size:0.85rem;color:#1e293b;flex:1;text-align:center;line-height:1.3;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical}
.comp-card__vs-badge{color:#7c3aed;font-weight:800;font-size:0.72rem;text-transform:uppercase;flex-shrink:0}
.comp-card__meta{font-size:0.76rem;color:#94a3b8;text-align:center}

/* ===== Complexity list ===== */
.complexity-list{background:#fff;border:1px solid #e2e8f0;border-radius:10px;overflow:hidden}
.complexity-item{display:flex;align-items:center;gap:14px;padding:14px 20px;border-bottom:1px solid #f1f5f9;transition:background .15s}
.complexity-item:last-child{border-bottom:none}
.complexity-item:hover{background:#fafafa}
.complexity-rank{width:40px;height:30px;border-radius:6px;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:0.78rem;flex-shrink:0}
.complexity-rank.hard{background:#fef2f2;color:#dc2626}
.complexity-rank.medium{background:#fef3c7;color:#d97706}
.complexity-rank.easy{background:#dcfce7;color:#16a34a}
.complexity-info{flex:1;min-width:0}
.complexity-info__title{font-weight:600;color:#1e293b;font-size:0.9rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.complexity-info__meta{font-size:0.76rem;color:#94a3b8}
.complexity-score{font-weight:700;font-size:1rem;color:#7c3aed;flex-shrink:0}

/* ===== Version cards grid ===== */
.version-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.version-card{background:#fff;border:1px solid #e2e8f0;border-radius:10px;padding:16px;transition:all .15s}
.version-card:hover{border-color:#c4b5fd;box-shadow:0 4px 16px rgba(124,58,237,.08)}
.version-card__name{font-weight:600;font-size:0.88rem;color:#1e293b;margin-bottom:2px;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.version-card__count{font-size:0.76rem;color:#7c3aed;font-weight:500}
.version-card__desc{font-size:0.76rem;color:#94a3b8;margin-top:2px}

/* ===== Compare page header ===== */
.compare-hero{background:linear-gradient(135deg,#0f172a 0%,#2e1065 50%,#0f172a 100%);color:#fff;padding:32px 20px;margin-left:calc(-50vw + 50%);margin-right:calc(-50vw + 50%)}
.compare-hero h1{font-size:1.3rem;font-weight:800;text-align:center;margin-bottom:4px;max-width:1120px;margin-left:auto;margin-right:auto}
.compare-hero h1 span{color:#a78bfa}
.compare-hero__sub{text-align:center;color:#c4b5fd;font-size:0.85rem;margin-bottom:18px}
.compare-heads{display:grid;grid-template-columns:1fr auto 1fr;gap:0;background:#1e1b4b;border-radius:12px;overflow:hidden;max-width:100%}
.compare-head{text-align:center;padding:18px;overflow:hidden}
.compare-head h2{font-size:0.95rem;font-weight:700;color:#e2e8f0;margin-bottom:2px;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.compare-head .code{font-family:'SF Mono','Fira Code',monospace;font-size:0.82rem;color:#a78bfa}
.compare-head .publisher{font-size:0.78rem;color:#94a3b8}
.compare-divider{display:flex;align-items:center;justify-content:center;background:#4c1d95;padding:0 16px;flex-shrink:0}
.compare-divider span{color:#fff;font-weight:800;font-size:1rem}

/* ===== Side-by-side metadata ===== */
.meta-grid{display:grid;grid-template-columns:1fr 1fr;gap:0;background:#fff;border:1px solid #e2e8f0;border-radius:10px;overflow:hidden}
.meta-col{padding:14px 18px;border-right:1px solid #e2e8f0}
.meta-col:last-child{border-right:none}
.meta-row{display:flex;padding:5px 0;font-size:0.84rem;border-bottom:1px solid #f1f5f9}
.meta-row:last-child{border-bottom:none}
.meta-label{color:#94a3b8;width:90px;flex-shrink:0;font-weight:500}
.meta-value{color:#1e293b;overflow:hidden;text-overflow:ellipsis}
.meta-value a{color:#7c3aed;font-weight:500}
.meta-value a:hover{text-decoration:underline}

/* ===== Citation overlap ===== */
.cite-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.cite-card{background:#fff;border:1px solid #e2e8f0;border-radius:10px;padding:16px}
.cite-card h4{font-size:0.83rem;font-weight:700;color:#0f172a;margin-bottom:10px}
.cite-tags{display:flex;flex-wrap:wrap;gap:5px}
.cite-tag{display:inline-block;padding:4px 10px;border-radius:4px;font-size:0.76rem;font-weight:500}
.cite-tag.shared{background:#dcfce7;color:#16a34a}
.cite-tag.unique-a{background:#f3e8ff;color:#7c3aed}
.cite-tag.unique-b{background:#fef3c7;color:#d97706}

/* ===== CTA ===== */
.cta-section{text-align:center;padding:28px 0}
.cta-btn{display:inline-flex;align-items:center;gap:8px;background:#7c3aed;color:#fff;padding:14px 28px;border-radius:10px;font-size:1rem;font-weight:700;transition:all .15s}
.cta-btn:hover{background:#6d28d9;transform:translateY(-2px);box-shadow:0 6px 20px rgba(124,58,237,.3)}
.cta-btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.cta-btn--secondary{background:#fff;color:#7c3aed;border:2px solid #7c3aed}
.cta-btn--secondary:hover{background:#f5f3ff}

/* ===== Page header ===== */
.page-header{text-align:center;padding:36px 0 24px}
.page-header h1{font-size:1.7rem;font-weight:800;color:#0f172a}
.page-header p{color:#64748b;margin-top:4px;max-width:560px;margin-left:auto;margin-right:auto}

/* ===== Explainer ===== */
.explainer{background:#f5f3ff;border:1px solid #c4b5fd;border-radius:10px;padding:18px 22px;margin-bottom:28px}
.explainer h3{font-size:0.92rem;font-weight:700;color:#5b21b6;margin-bottom:6px}
.explainer>p{font-size:0.85rem;color:#5b21b6}
.factors{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:12px}
.factor{text-align:center}
.factor__icon{font-size:1.3rem}
.factor__name{font-size:0.8rem;font-weight:600;color:#4c1d95;margin-top:2px}
.factor__desc{font-size:0.74rem;color:#7c3aed}

/* ===== Ranking list ===== */
.ranking-list{background:#fff;border:1px solid #e2e8f0;border-radius:10px;overflow:hidden;margin-bottom:32px}
.ranking-header{display:flex;align-items:center;padding:14px 18px;background:#f8fafc;border-bottom:1px solid #e2e8f0;font-size:0.8rem;font-weight:600;color:#64748b}
.ranking-header .rank{width:50px}
.ranking-header .name{flex:1}
.ranking-header .score{width:60px;text-align:center}
.ranking-header .level{width:70px;text-align:center}
.ranking-item{display:flex;align-items:center;padding:12px 18px;border-bottom:1px solid #f1f5f9;transition:background .15s}
.ranking-item:last-child{border-bottom:none}
.ranking-item:hover{background:#fafafa}
.ranking-item .rank{width:50px;font-weight:700;font-size:0.88rem;color:#64748b}
.ranking-item .name{flex:1;min-width:0}
.ranking-item .name a{color:#1e293b;font-weight:600;font-size:0.9rem}
.ranking-item .name a:hover{color:#7c3aed}
.ranking-item .name .meta{font-size:0.74rem;color:#94a3b8;display:block}
.ranking-item .score{width:60px;text-align:center;font-weight:700;font-size:0.95rem;color:#7c3aed}
.ranking-item .level{width:70px;text-align:center}
.ranking-bar{padding:0 70px 0 68px}
.ranking-bar .bar-bg{background:#f1f5f9;height:4px;border-radius:2px}
.ranking-bar .bar-fg{height:100%;border-radius:2px}
.bar-high{background:#dc2626}
.bar-medium{background:#d97706}
.bar-easy{background:#16a34a}

.level-badge{display:inline-block;padding:3px 8px;border-radius:4px;font-size:0.73rem;font-weight:600}
.level-high{background:#fef2f2;color:#dc2626}
.level-medium{background:#fef3c7;color:#d97706}
.level-easy{background:#dcfce7;color:#16a34a}

/* ===== Timeline ===== */
.timeline{position:relative;padding:0 0 36px}
.timeline::before{content:'';position:absolute;left:50%;top:0;bottom:0;width:3px;background:linear-gradient(to bottom,#7c3aed,#a78bfa,#c4b5fd);transform:translateX(-50%)}
.timeline-item{display:flex;align-items:flex-start;margin-bottom:24px;position:relative;min-height:60px}
.timeline-left{flex-direction:row}
.timeline-right{flex-direction:row-reverse}
.timeline-left .timeline-content{margin-left:7%;text-align:right}
.timeline-right .timeline-content{margin-right:7%}
.timeline-content{width:43%;background:#fff;border:1px solid #e2e8f0;border-radius:10px;padding:16px 18px;transition:all .15s;position:relative;z-index:0}
.timeline-content:hover{border-color:#c4b5fd;box-shadow:0 4px 12px rgba(124,58,237,.06)}
.timeline-content h3{font-size:0.92rem;font-weight:700;color:#0f172a;margin-bottom:2px}
.timeline-content .code{font-family:'SF Mono','Fira Code',monospace;font-size:0.8rem;color:#7c3aed;font-weight:600}
.timeline-content p{font-size:0.82rem;color:#64748b;margin-top:4px;line-height:1.5}
.timeline-dot{position:absolute;left:50%;top:24px;transform:translateX(-50%);z-index:2}
.timeline-dot-inner{width:14px;height:14px;border-radius:50%;border:3px solid #7c3aed;background:#fff}
.timeline-dot-inner.current{background:#7c3aed;border-color:#7c3aed;box-shadow:0 0 0 5px rgba(124,58,237,.12);width:18px;height:18px}
.timeline-spacer{width:40%}
.badge-row{display:flex;gap:5px;margin-top:8px;flex-wrap:wrap}
.timeline-badge{padding:3px 8px;border-radius:4px;font-size:0.72rem;font-weight:600}
.timeline-badge.current{background:#dcfce7;color:#16a34a}
.timeline-badge.older{background:#f1f5f9;color:#64748b}
.timeline-badge.newer{background:#f3e8ff;color:#7c3aed}
.timeline-badge.amd{background:#dbeafe;color:#1d4ed8}
.timeline-badge.cor{background:#fef3c7;color:#b45309}
.timeline-badge.add{background:#dcfce7;color:#16a34a}
.timeline-badge.suppl{background:#f3e8ff;color:#7c3aed}
.timeline-badge.major{background:#f1f5f9;color:#475569}
.timeline-current{border-color:#7c3aed;box-shadow:0 0 0 2px rgba(124,58,237,.1);margin-right:7%}
.timeline-minor .timeline-content{opacity:0.8;border-style:dashed}
.timeline-dot-inner.minor{width:12px;height:12px;border-width:2px;border-style:dashed}

/* ===== Family grid ===== */
.family-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.family-card{background:#fff;border:1px solid #e2e8f0;border-radius:10px;padding:16px;transition:all .15s}
.family-card:hover{border-color:#c4b5fd;box-shadow:0 4px 12px rgba(124,58,237,.06)}
.family-card__name{font-weight:700;font-size:0.92rem;color:#1e293b;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.family-card__versions{font-size:0.78rem;color:#7c3aed;margin-top:2px}
.family-card__range{font-size:0.76rem;color:#94a3b8}

/* ===== Responsive ===== */
@media(max-width:860px){
  .comp-grid{grid-template-columns:repeat(2,1fr)}
  .version-grid{grid-template-columns:repeat(2,1fr)}
  .family-grid{grid-template-columns:repeat(2,1fr)}
  .cite-grid{grid-template-columns:1fr}
}
@media(max-width:768px){
  .meta-grid{grid-template-columns:1fr}
  .meta-col{border-right:none;border-bottom:1px solid #e2e8f0}
  .compare-heads{grid-template-columns:1fr}
  .compare-divider{padding:6px 16px}
  .timeline::before{left:20px}
  .timeline-left,.timeline-right{flex-direction:row}
  .timeline-content{width:calc(100% - 50px);margin-left:50px;margin-right:0}
  .timeline-spacer{display:none}
  .timeline-dot{left:20px}
  .factors{grid-template-columns:repeat(2,1fr)}
  .comp-grid{grid-template-columns:1fr}
  .version-grid{grid-template-columns:1fr}
  .family-grid{grid-template-columns:1fr}
  .compare-inputs{flex-direction:column}
  .compare-vs{padding-bottom:0;text-align:center}
}
@media(max-width:480px){
  .stats-bar{grid-template-columns:repeat(3,1fr)}
  .compare-hero h1,.sb-hero h1{font-size:1.3rem}
}
.complexity-name{color:#1e293b;font-weight:600;font-size:0.9rem}
.compare-suggest{display:inline-block;margin-top:4px;font-size:0.76rem;color:#7c3aed;font-weight:500}.compare-suggest:hover{text-decoration:underline}

/* Recent comparisons */
.recent-comp-list{display:flex;flex-wrap:wrap;gap:8px}
.recent-comp-item{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;background:#fff;border:1px solid #e2e8f0;border-radius:8px;font-size:0.85rem;color:#1e293b;transition:all .15s}
.recent-comp-item:hover{border-color:#c4b5fd;box-shadow:0 2px 8px rgba(124,58,237,.08)}
.recent-comp__pair{font-weight:500}
.recent-vs{color:#7c3aed;font-weight:700;font-size:0.75rem;text-transform:uppercase}
.recent-comp__count{background:#f3e8ff;color:#7c3aed;font-size:0.72rem;padding:2px 6px;border-radius:4px;font-weight:600}