:root{
  --ec-primary:#FF8102;
  --ec-primary-dark:#d96800;
  --ec-primary-soft:#fff3e7;
  --ec-primary-soft-2:#fff8f1;
  --ec-text:#262626;
  --ec-muted:#66615c;
  --ec-border:#e6e2de;
  --ec-bg:#faf8f6;
  --ec-white:#ffffff;
  --ec-danger:#b42318;
}
.ec-page,.ec-page *,.ec-page *:before,.ec-page *:after{box-sizing:border-box}
.ec-page{width:100%;color:var(--ec-text);font-size:15px;line-height:1.65}
.ec-page input[type="radio"],.ec-page input[type="checkbox"]{accent-color:var(--ec-primary)}
.ec-header{background:var(--ec-white);border:1px solid var(--ec-border);border-radius:20px;padding:24px 28px 0;margin-bottom:24px}
.ec-heading h1{margin:0 0 4px;font-size:34px;line-height:1.25;color:#2b2118}
.ec-heading p{margin:0;color:var(--ec-muted);font-size:18px}
.ec-tabs{display:flex;flex-wrap:wrap;gap:8px 12px;margin-top:22px;padding-bottom:14px;border-bottom:3px solid #2b2118}
.ec-tabs a{display:inline-flex;align-items:center;min-height:44px;padding:8px 14px;border-radius:12px;color:#4a4038;text-decoration:none;font-weight:600;transition:.2s ease}
.ec-tabs a:hover{background:var(--ec-primary-soft);color:var(--ec-primary-dark)}
.ec-tabs a.is-active{background:var(--ec-primary-soft);color:var(--ec-primary-dark);box-shadow:inset 0 0 0 1px #ffd1a4}
.ec-card{background:var(--ec-white);border:1px solid var(--ec-border);border-radius:18px;padding:22px;margin-bottom:18px}
.ec-card h2{margin:0 0 16px;font-size:23px;line-height:1.35;color:#2b2118}
.ec-card h2 span,.ec-section-title{color:var(--ec-primary-dark)}
.ec-card h3{margin:18px 0 10px;font-size:18px}
.ec-switch{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
.ec-switch label{position:relative;cursor:pointer}
.ec-switch input{position:absolute;opacity:0;pointer-events:none}
.ec-switch span{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:8px 15px;border:1px solid var(--ec-border);border-radius:999px;background:#fff;color:#5f554d;font-weight:700}
.ec-switch input:checked+span{border-color:var(--ec-primary);background:var(--ec-primary-soft);color:var(--ec-primary-dark)}
.ec-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.ec-grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.ec-field{display:block;margin-bottom:14px}
.ec-field>span{display:block;margin-bottom:6px;color:#4a4038;font-size:13px;font-weight:700}
.ec-field small{display:block;margin-top:5px;color:var(--ec-muted);font-size:12px}
.ec-input,.ec-select{width:100%;height:46px;padding:0 12px;border:1px solid #d6d1cc;border-radius:10px;background:#fff;color:var(--ec-text);outline:none}
.ec-input:focus,.ec-select:focus{border-color:var(--ec-primary);box-shadow:0 0 0 3px rgba(255,129,2,.14)}
.ec-check{display:flex;align-items:flex-start;gap:9px;margin:10px 0 14px;cursor:pointer}
.ec-check input{margin-top:5px;accent-color:var(--ec-primary)}
.ec-radio-list{display:grid;gap:9px;margin-bottom:18px}
.ec-radio-list label{display:flex;align-items:flex-start;gap:9px;padding:10px 12px;border:1px solid var(--ec-border);border-radius:11px;cursor:pointer}
.ec-radio-list input{margin-top:4px;accent-color:var(--ec-primary)}
.ec-radio-list label.is-checked{border-color:var(--ec-primary);background:var(--ec-primary-soft-2)}
.ec-legend,.ec-note{margin:0 0 16px;padding:12px 14px;border-left:4px solid var(--ec-primary);border-radius:9px;background:var(--ec-primary-soft-2);color:#5d3b18}
.ec-rate-preview{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:-2px 0 14px}
.ec-rate-preview strong,.ec-rate-preview span{display:block;padding:9px 10px;border:1px solid #ffd8b2;border-radius:9px;background:var(--ec-primary-soft-2);font-size:13px}
.ec-rate-preview strong{grid-column:1/-1;color:var(--ec-primary-dark)}
.ec-submit{display:inline-flex;align-items:center;justify-content:center;min-width:210px;min-height:46px;padding:9px 20px;border:0;border-radius:10px;background:var(--ec-primary);color:#fff;font-weight:800;cursor:pointer;box-shadow:0 8px 18px rgba(255,129,2,.18)}
.ec-submit:hover{background:var(--ec-primary-dark)}
.ec-error{display:none;margin-top:12px;padding:10px 12px;border:1px solid #fecdca;border-radius:9px;background:#fef3f2;color:var(--ec-danger)}
.ec-error.is-visible{display:block}
.ec-result{display:none}
.ec-result.is-visible{display:block}
.ec-result-layout{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:16px;align-items:start}
.ec-table-wrap{overflow:hidden;border:1px solid var(--ec-border);border-radius:14px}
.ec-table{width:100%;border-collapse:collapse;background:#fff}
.ec-table th,.ec-table td{padding:11px 12px;border-bottom:1px solid var(--ec-border);text-align:left;vertical-align:middle}
.ec-table th{background:#fafafa;color:#5f554d;font-size:12px;text-transform:uppercase}
.ec-table td:nth-child(n+2),.ec-table th:nth-child(n+2){text-align:right;font-variant-numeric:tabular-nums}
.ec-table tr:last-child td{border-bottom:0}
.ec-table .ec-group td{text-align:left!important;background:var(--ec-primary-soft-2);color:var(--ec-primary-dark);font-weight:800}
.ec-summary{border:1px solid #ffd2a8;border-radius:14px;background:var(--ec-primary-soft-2);padding:15px}
.ec-summary h3{margin:0 0 8px;color:var(--ec-primary-dark)}
.ec-summary-row{display:flex;justify-content:space-between;gap:14px;padding:9px 0;border-bottom:1px solid #f5d5b7}
.ec-summary-row strong{text-align:right;font-variant-numeric:tabular-nums}
.ec-summary-row.total{margin-top:3px;border-bottom:0;color:var(--ec-primary-dark);font-size:17px}
.ec-info{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-top:14px}
.ec-info>div{padding:11px;border:1px solid var(--ec-border);border-radius:11px;background:#fff}
.ec-info span{display:block;color:var(--ec-muted);font-size:12px}
.ec-info strong{display:block;margin-top:3px;color:#2b2118}
.ec-tier-map{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:8px;margin-top:16px}
.ec-tier-map:empty{display:none}
.ec-tier-item{position:relative;min-height:90px;padding:12px;border:1px solid #ececec;border-radius:12px;background:#f7f7f7}
.ec-tier-item.is-used{border-color:#ffc78f;background:var(--ec-primary-soft)}
.ec-tier-item.is-current{box-shadow:inset 0 0 0 2px var(--ec-primary)}
.ec-tier-item b,.ec-tier-item span{display:block}
.ec-tier-item b{color:#2b2118}
.ec-tier-item span{margin-top:5px;color:var(--ec-muted);font-size:12px}
.ec-tier-item em{display:inline-block;margin-top:7px;padding:3px 7px;border-radius:999px;background:var(--ec-primary);color:#fff;font-size:11px;font-style:normal;font-weight:800}
.ec-comparison{display:none;margin-top:15px;padding:14px;border:1px solid #ffd2a8;border-radius:12px;background:var(--ec-primary-soft-2)}
.ec-comparison.is-visible{display:block}
.ec-comparison.is-over{border-color:#fda29b;background:#fef3f2;color:#7a271a}
.ec-comparison.is-ok{border-color:#ffc78f;background:var(--ec-primary-soft-2);color:#6b3a08}
.ec-comparison strong{display:block;margin-bottom:5px;font-size:17px}
.ec-result-note{margin-top:14px;color:var(--ec-muted);font-size:13px}
.ec-seo{margin-top:26px;background:#fff;border:1px solid var(--ec-border);border-radius:18px;padding:24px}
.ec-seo h2{margin:28px 0 10px;font-size:24px;line-height:1.35;color:#2b2118}
.ec-seo h2:first-of-type{margin-top:18px}
.ec-seo h3{margin:20px 0 8px;font-size:19px}
.ec-seo p{margin:0 0 12px}
.ec-seo ul,.ec-seo ol{margin:8px 0 16px;padding-left:22px}
.ec-seo li{margin-bottom:6px}
.ec-lead{font-size:17px;color:#4a4038}
.ec-formula{margin:14px 0;padding:13px 15px;border-left:4px solid var(--ec-primary);background:var(--ec-primary-soft-2);font-weight:700;color:#4a2e13}
.ec-seo-table-wrap{overflow:auto;border:1px solid var(--ec-border);border-radius:12px}
.ec-seo table{width:100%;border-collapse:collapse;background:#fff}
.ec-seo th,.ec-seo td{padding:10px 12px;border-bottom:1px solid var(--ec-border);text-align:left}
.ec-seo th{background:#fafafa;color:#5f554d}
.ec-seo td.num,.ec-seo th.num{text-align:right}
.ec-seo a{color:var(--ec-primary-dark);text-decoration:underline}
.ec-faq{margin-top:28px}
.ec-faq h2{margin-bottom:12px}
.ec-faq details{border:1px solid var(--ec-border);border-radius:12px;background:#fff;margin-bottom:9px;overflow:hidden}
.ec-faq details[open]{border-color:#ffc78f;background:var(--ec-primary-soft-2)}
.ec-faq summary{padding:13px 15px;cursor:pointer;font-weight:800;color:#2b2118}
.ec-faq p{padding:0 15px 14px;margin:0;color:#5f554d}
.ec-footer-note{margin:14px 0 0;color:var(--ec-muted);font-size:13px}
.ec-hidden{display:none!important}
@media(max-width:980px){
  .ec-result-layout{grid-template-columns:1fr}
  .ec-info{grid-template-columns:repeat(2,minmax(0,1fr))}
  .ec-tier-map{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media(max-width:760px){
  .ec-header{padding:18px 16px 0;border-radius:15px}
  .ec-heading h1{font-size:27px}
  .ec-heading p{font-size:15px}
  .ec-tabs{gap:7px;margin-top:16px;padding-bottom:11px}
  .ec-tabs a{flex:1 1 calc(50% - 7px);min-height:40px;padding:7px 9px;justify-content:center;text-align:center;font-size:13px}
  .ec-card,.ec-seo{padding:16px;border-radius:14px}
  .ec-grid,.ec-grid--3{grid-template-columns:1fr}
  .ec-rate-preview{grid-template-columns:1fr}
  .ec-rate-preview strong{grid-column:auto}
  .ec-submit{width:100%}
  .ec-info{grid-template-columns:1fr}
  .ec-tier-map{grid-template-columns:1fr}
  .ec-table-wrap{overflow:visible;border:0}
  .ec-table,.ec-table tbody,.ec-table tr,.ec-table td{display:block;width:100%}
  .ec-table thead{display:none}
  .ec-table tbody{display:grid;gap:10px}
  .ec-table tr{padding:10px;border:1px solid var(--ec-border);border-radius:12px;background:#fff}
  .ec-table td{display:flex;justify-content:space-between;gap:12px;padding:5px 0;border:0;text-align:right!important}
  .ec-table td:before{content:attr(data-label);color:var(--ec-muted);font-size:11px;font-weight:800;text-align:left;text-transform:uppercase}
  .ec-table .ec-group{padding:0;border:0;background:transparent}
  .ec-table .ec-group td{display:block;padding:8px 10px;border:1px solid #ffd8b2!important;border-radius:10px;text-align:left!important}
  .ec-table .ec-group td:before{display:none}
  .ec-seo-table-wrap{overflow:visible;border:0}
  .ec-seo table,.ec-seo tbody,.ec-seo tr,.ec-seo td{display:block;width:100%}
  .ec-seo thead{display:none}
  .ec-seo tr{margin-bottom:10px;padding:10px;border:1px solid var(--ec-border);border-radius:10px}
  .ec-seo td{display:flex;justify-content:space-between;gap:12px;padding:5px 0;border:0;text-align:right!important}
  .ec-seo td:before{content:attr(data-label);color:var(--ec-muted);font-size:11px;font-weight:800;text-align:left}
}

/* Khối kết quả bậc thang khôi phục từ bản HTML v15 */
.ec-table td:nth-child(3),.ec-table th:nth-child(3){text-align:left}
.ec-usage{display:flex;align-items:center;gap:10px;justify-content:flex-start}
.ec-usage-bar{display:grid;grid-auto-flow:column;grid-auto-columns:10px;gap:2px;align-items:end;flex:none}
.ec-usage-bar i{display:block;width:10px;height:20px;border-radius:2px;background:#ece8e3}
.ec-usage-bar i.is-on{background:var(--ec-primary)}
.ec-usage-bar i.is-partial{background:linear-gradient(90deg,var(--ec-primary) 0 var(--ec-fill,50%),#ece8e3 var(--ec-fill,50%) 100%)}
.ec-usage-text{font-size:13px;white-space:nowrap;font-variant-numeric:tabular-nums}
.ec-tier-graph-wrap{margin-top:16px;padding:16px;border:1px solid var(--ec-border);border-radius:16px;background:#fff}
.ec-tier-graph-title{margin-bottom:10px;color:#2b2118;font-size:18px;font-weight:800}
.ec-tier-graph-mobile{display:none}
.ec-tier-arrow-row{display:flex;align-items:flex-end;height:38px;margin:0 0 6px}
.ec-tier-arrow-slot{display:flex;justify-content:center;align-items:flex-end;min-width:0}
.ec-tier-arrow{display:flex;flex-direction:column;align-items:center;color:var(--ec-primary-dark);font-size:12px;font-weight:800;white-space:nowrap}
.ec-tier-arrow:after{content:"";display:block;width:0;height:0;margin-top:3px;border-left:10px solid transparent;border-right:10px solid transparent;border-top:15px solid var(--ec-primary)}
.ec-tier-ribbon{display:flex;min-height:126px;overflow:hidden;border:1px solid #eadfd4;border-radius:18px;background:#f3f0ed}
.ec-tier-segment{display:flex;min-width:0;align-items:center;justify-content:center;padding:14px 8px;border-right:1px solid rgba(255,255,255,.85);background:#f1eeeb;color:#69615a;text-align:center}
.ec-tier-segment:last-child{border-right:0}
.ec-tier-segment.is-used{background:var(--ec-primary);color:#fff}
.ec-tier-segment.is-current{box-shadow:inset 0 0 0 4px rgba(255,255,255,.65)}
.ec-tier-segment strong,.ec-tier-segment span{display:block}
.ec-tier-segment strong{font-size:21px;line-height:1.2}
.ec-tier-segment span{margin-top:8px;font-size:14px;font-weight:700}
.ec-saving{margin-top:16px;padding:15px 18px;border:1px solid #ffc579;border-radius:14px;background:var(--ec-primary-soft-2);color:#794000}
.ec-saving strong{display:block;margin-bottom:4px;font-size:17px;color:#6d3900}
.ec-result-source{margin-top:10px;color:var(--ec-muted);font-size:12px}
.ec-comparison>div{margin-top:5px}
.ec-comparison-section{margin-top:12px!important;padding-top:12px;border-top:1px dashed #e7c39f}
.ec-comparison-note{padding-top:6px;color:var(--ec-muted);font-size:12px}

@media(max-width:760px){
  .ec-usage{gap:7px;align-items:center}
  .ec-usage-bar{grid-auto-columns:7px;gap:1px}
  .ec-usage-bar i{width:7px;height:14px}
  .ec-usage-text{white-space:normal;font-size:12px}
  .ec-tier-graph-wrap{padding:14px}
  .ec-tier-graph-desktop{display:none}
  .ec-tier-graph-mobile{display:block;padding-bottom:42px}
  .ec-tier-stack{overflow:visible;border:1px solid #eadfd4;border-radius:17px;background:#f3f0ed}
  .ec-tier-stack-item{position:relative;padding:17px 16px;border-bottom:1px solid rgba(255,255,255,.9);background:#f1eeeb;color:#69615a}
  .ec-tier-stack-item:first-child{border-radius:16px 16px 0 0}
  .ec-tier-stack-item:last-child{border-bottom:0;border-radius:0 0 16px 16px}
  .ec-tier-stack-item.is-used{background:var(--ec-primary);color:#fff}
  .ec-tier-stack-item.is-current{box-shadow:inset 0 0 0 3px rgba(255,255,255,.65)}
  .ec-tier-stack-item>div:last-child{display:flex;align-items:center;justify-content:space-between;gap:12px}
  .ec-tier-stack-item strong{font-size:19px}
  .ec-tier-stack-item span{font-size:16px;font-weight:800}
  .ec-tier-stack-badge{position:absolute;left:50%;bottom:-39px;z-index:3;display:inline-flex;transform:translateX(-50%);align-items:center;padding:4px 9px;border:1px solid #ffd0a1;border-radius:999px;background:#fff;color:var(--ec-primary-dark);font-size:11px;font-weight:800;white-space:nowrap;box-shadow:0 2px 8px rgba(62,37,13,.08)}
  .ec-tier-stack-badge:before{content:"";position:absolute;left:50%;top:-13px;transform:translateX(-50%);width:0;height:0;border-left:8px solid transparent;border-right:8px solid transparent;border-bottom:13px solid var(--ec-primary)}
}