:root{--art-navy:#0f2044;--art-gold:#c9a96e;--art-muted:#64748b;--art-border:#e8ecf0;--art-bg:#f8fafc;--art-radius:14px}.art-container{max-width:1200px;margin:0 auto;padding:0 24px}.art-hero{background:linear-gradient(135deg,#0f2044 0,#1a3a7a 60%,#0d1b3e 100%);padding:64px 0 56px;text-align:center;position:relative;overflow:hidden}.art-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 60% 50%,rgba(201,169,110,.18) 0,transparent 70%)}.art-hero-eyebrow{font-size:12px;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:var(--art-gold);margin-bottom:14px}.art-hero-title{font-size:clamp(28px, 5vw, 44px);font-weight:800;color:#fff;margin:0 0 14px;line-height:1.2}.art-hero-sub{font-size:16px;color:rgba(255,255,255,.72);max-width:560px;margin:0 auto;line-height:1.6}.art-filter-bar{background:#fff;border-bottom:1px solid var(--art-border);padding:16px 0;position:sticky;top:0;z-index:100}.art-filter-inner{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.art-filter-btn{padding:7px 18px;border-radius:30px;border:1.5px solid var(--art-border);background:#fff;color:var(--art-muted);font-size:13px;font-weight:600;cursor:pointer;transition:all .18s;font-family:Sarabun,sans-serif}.art-filter-btn:hover{border-color:var(--art-gold);color:var(--art-gold)}.art-filter-btn.active{background:var(--art-gold);border-color:var(--art-gold);color:#fff}.art-section{padding:48px 0 64px}.art-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:32px}.art-card{background:#fff;border-radius:var(--art-radius);border:1px solid var(--art-border);overflow:hidden;transition:transform .2s,box-shadow .2s;cursor:pointer;display:flex;flex-direction:column;text-decoration:none;color:inherit}.art-card:hover{transform:translateY(-4px);box-shadow:0 12px 40px rgba(15,32,68,.12);border-color:var(--art-gold)}.art-card-cover{height:160px;display:flex;align-items:center;justify-content:center;font-size:42px;color:rgba(255,255,255,.85);flex-shrink:0;position:relative}.art-card-cover-icon{font-size:44px;color:rgba(255,255,255,.85);filter:drop-shadow(0 2px 8px rgba(0,0,0,.3))}.art-card-body{padding:18px 20px 20px;flex:1;display:flex;flex-direction:column}.art-card-cat{display:inline-flex;align-items:center;gap:5px;font-size:11px;font-weight:700;color:var(--art-gold);letter-spacing:.5px;text-transform:uppercase;margin-bottom:10px}.art-card-title{font-size:15px;font-weight:700;color:var(--art-navy);line-height:1.45;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.art-card-excerpt{font-size:13px;color:var(--art-muted);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1}.art-card-meta{display:flex;align-items:center;gap:12px;margin-top:14px;padding-top:14px;border-top:1px solid var(--art-border);font-size:12px;color:var(--art-muted)}.art-card-meta i{color:var(--art-gold)}.art-single-hero{padding:48px 0 40px;border-bottom:1px solid var(--art-border);background:var(--art-bg)}.art-breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--art-muted);margin-bottom:20px}.art-breadcrumb a{color:var(--art-muted);text-decoration:none}.art-breadcrumb a:hover{color:var(--art-gold)}.art-breadcrumb i{font-size:10px}.art-single-cat{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;color:var(--art-gold);letter-spacing:1px;text-transform:uppercase;margin-bottom:14px;background:rgba(201,169,110,.1);padding:5px 14px;border-radius:20px}.art-single-title{font-size:clamp(22px, 4vw, 36px);font-weight:800;color:var(--art-navy);line-height:1.3;margin:0 0 16px}.art-single-meta{display:flex;align-items:center;gap:20px;font-size:13px;color:var(--art-muted);flex-wrap:wrap}.art-single-meta i{color:var(--art-gold);margin-right:4px}.art-single-layout{display:grid;grid-template-columns:1fr 300px;gap:48px;padding:48px 0 80px;align-items:start}.art-content{max-width:720px}.art-content h2{font-size:22px;font-weight:800;color:var(--art-navy);margin:36px 0 14px;padding-bottom:10px;border-bottom:2px solid var(--art-border)}.art-content h2:first-child{margin-top:0}.art-content h3{font-size:17px;font-weight:700;color:var(--art-navy);margin:24px 0 10px}.art-content p{font-size:15px;line-height:1.8;color:#334155;margin-bottom:16px}.art-content ol,.art-content ul{padding-left:22px;margin-bottom:16px}.art-content li{font-size:15px;line-height:1.8;color:#334155;margin-bottom:6px}.art-content strong{color:var(--art-navy)}.art-table-wrap{overflow-x:auto;margin:20px 0;border-radius:10px;border:1px solid var(--art-border)}.art-table{width:100%;border-collapse:collapse;font-size:14px;min-width:480px}.art-table thead tr{background:#f1f5f9}.art-table th{padding:10px 14px;text-align:left;font-weight:700;color:#475569;white-space:nowrap;border-bottom:2px solid var(--art-border)}.art-table td{padding:10px 14px;border-bottom:1px solid #f1f5f9;color:#334155}.art-table tbody tr:last-child td{border-bottom:none}.art-table tbody tr:hover{background:#fafbff}.art-table-total td{background:#fef9ee;font-weight:700}.art-callout{display:flex;gap:14px;padding:16px 18px;border-radius:10px;margin:20px 0;font-size:14px;line-height:1.65;align-items:flex-start}.art-callout>i{font-size:18px;margin-top:2px;flex-shrink:0}.art-callout--tip{background:#fef9ee;border-left:4px solid var(--art-gold)}.art-callout--tip>i{color:var(--art-gold)}.art-callout--warning{background:#fef2f2;border-left:4px solid #ef4444}.art-callout--warning>i{color:#ef4444}.art-callout--info{background:#eff6ff;border-left:4px solid #3b82f6}.art-callout--info>i{color:#3b82f6}.art-callout ul{margin:6px 0 0}.art-steps{margin:20px 0}.art-step{display:flex;gap:16px;margin-bottom:20px;align-items:flex-start}.art-step-num{width:32px;height:32px;border-radius:50%;background:var(--art-gold);color:#fff;font-weight:800;font-size:14px;display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:2px}.art-step-body p{margin:4px 0 0;font-size:14px;color:var(--art-muted)}.art-checklist{margin:16px 0}.art-check-item{display:flex;gap:16px;padding:14px 0;border-bottom:1px solid var(--art-border);align-items:flex-start}.art-check-item:last-child{border-bottom:none}.art-check-num{width:28px;height:28px;border-radius:50%;background:#f1f5f9;border:2px solid var(--art-border);color:var(--art-navy);font-weight:800;font-size:12px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.art-check-item>div:last-child p{margin:4px 0 0;font-size:14px;color:var(--art-muted)}.art-checklist-simple{margin:12px 0}.art-checklist-simple label{display:flex;align-items:flex-start;gap:10px;padding:8px 0;font-size:14px;color:#334155;line-height:1.5;border-bottom:1px solid #f1f5f9;cursor:pointer}.art-checklist-simple label:last-child{border-bottom:none}.art-checklist-simple input[type=checkbox]{margin-top:3px;accent-color:var(--art-gold);flex-shrink:0}.art-formula{background:#f1f5f9;border-left:4px solid var(--art-navy);padding:14px 18px;border-radius:0 8px 8px 0;font-family:monospace;font-size:14px;color:var(--art-navy);margin:16px 0;font-weight:600}.art-sidebar{position:sticky;top:80px}.art-sidebar-widget{background:#fff;border:1px solid var(--art-border);border-radius:var(--art-radius);padding:20px;margin-bottom:24px}.art-sidebar-title{font-size:13px;font-weight:800;color:var(--art-navy);text-transform:uppercase;letter-spacing:1px;margin-bottom:16px;padding-bottom:10px;border-bottom:2px solid var(--art-border)}.art-rel-card{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid #f1f5f9;text-decoration:none;color:inherit;align-items:flex-start}.art-rel-card:last-child{border-bottom:none;padding-bottom:0}.art-rel-icon{width:44px;height:44px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:18px;color:rgba(255,255,255,.85);flex-shrink:0}.art-rel-title{font-size:13px;font-weight:600;color:var(--art-navy);line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.art-rel-card:hover .art-rel-title{color:var(--art-gold)}.art-rel-meta{font-size:11px;color:var(--art-muted);margin-top:4px}.art-share{display:flex;gap:8px}.art-share-btn{padding:8px 16px;border-radius:8px;font-size:12px;font-weight:700;text-decoration:none;display:inline-flex;align-items:center;gap:6px;cursor:pointer;border:none;transition:opacity .18s}.art-share-btn:hover{opacity:.85}.art-share-btn--fb{background:#1877f2;color:#fff}.art-share-btn--line{background:#00b900;color:#fff}.art-share-btn--copy{background:#f1f5f9;color:var(--art-navy)}.art-cta-banner{background:linear-gradient(135deg,var(--art-navy) 0,#1a3a7a 100%);border-radius:var(--art-radius);padding:24px 20px;text-align:center;color:#fff}.art-cta-banner h4{font-size:16px;margin:0 0 8px}.art-cta-banner p{font-size:13px;opacity:.75;margin:0 0 16px}.art-cta-banner a{display:inline-block;background:var(--art-gold);color:var(--art-navy);padding:10px 20px;border-radius:8px;font-size:13px;font-weight:700;text-decoration:none;transition:opacity .18s}.art-cta-banner a:hover{opacity:.9}#art-read-progress{position:fixed;top:0;left:0;height:3px;background:var(--art-gold);z-index:9999;width:0%;transition:width .1s linear}@media (max-width:960px){.art-grid{grid-template-columns:repeat(2,1fr);gap:20px}.art-single-layout{grid-template-columns:1fr;gap:32px}.art-sidebar{position:static}.art-content{max-width:100%}}@media (max-width:600px){.art-grid{grid-template-columns:1fr;gap:16px}.art-hero{padding:40px 0 36px}.art-container{padding:0 16px}.art-section{padding:32px 0 48px}.art-card-cover{height:130px}.art-filter-inner{gap:6px}.art-filter-btn{padding:6px 14px;font-size:12px}.art-single-hero{padding:32px 0 24px}.art-single-layout{padding:32px 0 48px}.art-table{min-width:400px;font-size:13px}.art-step{gap:12px}.art-check-item{gap:12px}}