/* DIGITAL-SIGNATURE-COMMERCE-V1 — Chữ ký số VNPT region block styles.
 * Mobile-first (owner §52): intent grid, comparison cards, identity tabs, SmartCA price panel,
 * token table (scrolls only inside its own container), promo, CA-IVAN, HSM, Q&A. NO page horizontal
 * scroll. Self-contained tokens with fallbacks; visual language consistent with sibling commerce pages. */
.ds{--ds-blue:#0a57c2;--ds-blue-d:#0742a0;--ds-ink:#16202e;--ds-muted:#5a6b80;--ds-line:#e3e9f2;--ds-bg:#f6f9ff;--ds-card:#fff;--ds-ok:#0a8a4a;--ds-warn:#b5771a;--ds-radius:14px;color:var(--ds-ink);padding-bottom:80px}
.ds *{box-sizing:border-box}
.ds-region{max-width:1120px;margin:0 auto;padding:30px 16px}
.ds-r-head{display:flex;align-items:center;gap:12px;margin:0 0 6px}
.ds-r-num{flex:0 0 auto;width:30px;height:30px;border-radius:50%;background:var(--ds-blue);color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;font-size:15px}
.ds-r-head h2{font-size:clamp(19px,4.6vw,27px);line-height:1.25;margin:0;font-weight:800}
.ds-r-sub{color:var(--ds-muted);font-size:15px;line-height:1.55;margin:4px 0 16px;max-width:780px}
.ds-r-sub b{color:var(--ds-ink)}
.ds-note-muted{color:var(--ds-muted);font-size:13px;line-height:1.5;margin:12px 0 0}

/* buttons (shared) */
.ds-cta-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.ds-btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:12px 18px;border-radius:10px;font-weight:700;font-size:15px;cursor:pointer;text-decoration:none;border:1.5px solid transparent;transition:.15s;min-height:48px}
.ds-btn-sm{min-height:44px;padding:10px 16px;font-size:14px}
.ds-btn-primary{background:var(--ds-blue);color:#fff}
.ds-btn-primary:hover{background:var(--ds-blue-d)}
.ds-btn-ghost{background:#fff;color:var(--ds-blue-d);border-color:var(--ds-blue)}
.ds-btn-ghost:hover{background:var(--ds-bg)}
/* CTA-COLOR-CONTRAST-FIX (2026-09-23): servicehub.css `.sh-app a{color:var(--sh-blue)}` (0,1,1) recolors
   anchor-based CTAs inside .sh-app — turning the blue-gradient promo banner's white text blue-on-blue
   (invisible) and ghost anchors off-brand. Reassert intended colors at higher specificity, scoped to .ds
   (precedent: promotion.css `.km-app a.km-card__cta` shell-ownership guard). Buttons (<button>) unaffected. */
.ds a.ds-btn-primary,.ds a.ds-btn-primary:visited{color:#fff}
.ds a.ds-btn-ghost,.ds a.ds-btn-ghost:visited{color:var(--ds-blue-d)}
.ds a.ds-promo-banner,.ds a.ds-promo-banner:visited,.ds a.ds-promo-banner .ds-promo-banner-cta{color:#fff}

/* 02 intent advisor */
.ds-intents{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.ds-intent{display:flex;align-items:center;gap:10px;padding:14px;border:1.5px solid var(--ds-line);background:#fff;border-radius:var(--ds-radius);font-size:14.5px;font-weight:600;color:var(--ds-ink);cursor:pointer;transition:.15s;min-height:56px;text-align:left}
.ds-intent:hover{border-color:var(--ds-blue)}
.ds-intent.on{border-color:var(--ds-blue);background:var(--ds-bg);box-shadow:inset 0 0 0 1px var(--ds-blue)}
.ds-intent-ic{font-size:22px;line-height:1;flex:0 0 auto}
.ds-advice{margin-top:16px}
.ds-advice-card{background:linear-gradient(180deg,#fff,var(--ds-bg));border:1.5px solid var(--ds-blue);border-radius:16px;padding:18px 16px;box-shadow:0 4px 18px rgba(10,87,194,.1)}
.ds-advice-reco{font-size:16px;color:var(--ds-blue-d);font-weight:700}
.ds-advice-reco b{color:var(--ds-ink)}
.ds-advice-why{font-size:14px;line-height:1.55;color:var(--ds-ink);margin:8px 0 0}
.ds-advice-load{color:var(--ds-muted);font-size:14px}

/* 03 compare cards */
.ds-compare-grid{display:grid;grid-template-columns:1fr;gap:14px;align-items:start}
.ds-compare-card{background:var(--ds-card);border:1.5px solid var(--ds-line);border-radius:16px;padding:18px 16px;display:flex;flex-direction:column;gap:6px;box-shadow:0 1px 3px rgba(16,32,46,.05)}
.ds-compare-hl{border-color:var(--ds-blue);box-shadow:0 8px 28px rgba(10,87,194,.14)}
.ds-compare-ic{font-size:26px;line-height:1}
.ds-compare-t{font-size:18px;font-weight:800;color:var(--ds-blue-d);margin:2px 0 0}
.ds-compare-tag{font-size:13.5px;color:var(--ds-muted);margin:0}
.ds-compare-list{margin:8px 0 0;padding:0;list-style:none;display:grid;gap:7px}
.ds-compare-list li{position:relative;padding-left:22px;font-size:13.5px;line-height:1.45}
.ds-compare-list li:before{content:"✓";position:absolute;left:0;top:0;color:var(--ds-ok);font-weight:800}
.ds-compare-card .ds-btn{margin-top:auto;align-self:flex-start}

/* 04 SmartCA pricing */
.ds-tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.ds-tab{padding:11px 16px;border:1.5px solid var(--ds-line);background:#fff;border-radius:999px;font-weight:700;font-size:14px;color:var(--ds-ink);cursor:pointer;transition:.15s;min-height:44px}
.ds-tab:hover{border-color:var(--ds-blue)}
.ds-tab.on{background:var(--ds-blue);color:#fff;border-color:var(--ds-blue)}
.ds-sc-controls{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:14px}
.ds-seg{display:inline-flex;flex-wrap:wrap;gap:6px;background:var(--ds-bg);border:1px solid var(--ds-line);border-radius:12px;padding:5px}
.ds-seg-btn{padding:9px 14px;border:none;background:transparent;border-radius:9px;font-weight:700;font-size:14px;color:var(--ds-muted);cursor:pointer;transition:.15s;min-height:42px}
.ds-seg-btn:hover{color:var(--ds-blue-d)}
.ds-seg-btn.on{background:#fff;color:var(--ds-blue-d);box-shadow:0 1px 3px rgba(16,32,46,.12)}
.ds-sc-cap{font-size:13.5px;color:var(--ds-muted);margin-bottom:12px}
.ds-sc-cap [data-ds-cap-name]{font-weight:700;color:var(--ds-ink)}
.ds-sc-price{background:linear-gradient(180deg,#fff,var(--ds-bg));border:1.5px solid var(--ds-blue);border-radius:16px;padding:20px 18px;box-shadow:0 4px 18px rgba(10,87,194,.1)}
.ds-sc-price-label{font-size:14px;font-weight:700;color:var(--ds-blue-d)}
.ds-sc-price-amt{margin:6px 0 2px}
.ds-sc-price-amt b{font-size:clamp(28px,7vw,40px);font-weight:800;color:var(--ds-ink)}
.ds-sc-price-vat{color:var(--ds-warn);font-size:13px;font-weight:700}

/* 05 token */
.ds-token-grid{display:grid;grid-template-columns:1fr;gap:16px;align-items:start}
.ds-token-card{background:var(--ds-card);border:1.5px solid var(--ds-line);border-radius:16px;padding:18px 16px;box-shadow:0 1px 3px rgba(16,32,46,.05)}
.ds-token-consult{background:linear-gradient(180deg,#fff,var(--ds-bg))}
.ds-token-h{font-weight:800;font-size:16.5px;color:var(--ds-blue-d);margin-bottom:12px}
.ds-token-tbl{width:100%;border-collapse:collapse;font-size:14px}
.ds-token-tbl th,.ds-token-tbl td{padding:10px 8px;border-bottom:1px solid var(--ds-line);text-align:right}
.ds-token-tbl thead th{background:var(--ds-bg);color:var(--ds-blue-d);font-weight:800;font-size:13px;text-align:right}
.ds-token-tbl th[scope=row]{text-align:left;font-weight:600}
.ds-token-tbl thead th:first-child{text-align:left}
.ds-token-card p{font-size:13.8px;line-height:1.55;color:var(--ds-ink)}

/* 06 promo */
.ds-r-promo .ds-promo-hero{background:linear-gradient(180deg,#fff,var(--ds-bg));border:1.5px solid var(--ds-blue);border-radius:16px;padding:20px 18px;box-shadow:0 4px 18px rgba(10,87,194,.1)}
.ds-promo-main{font-size:16px;line-height:1.5;color:var(--ds-ink)}
.ds-promo-main b{color:var(--ds-blue-d)}
.ds-promo-rules{margin:12px 0 0;padding-left:20px;display:grid;gap:6px}
.ds-promo-rules li{font-size:14px;line-height:1.5}
.ds-promo-cols{display:grid;grid-template-columns:1fr;gap:14px;margin-top:14px}
.ds-promo-col{background:var(--ds-card);border:1px solid var(--ds-line);border-radius:var(--ds-radius);padding:16px}
.ds-promo-col h3{margin:0 0 6px;font-size:16px;color:var(--ds-blue-d)}
.ds-promo-col p{margin:0;font-size:13.8px;line-height:1.55;color:var(--ds-ink)}

/* 05 token unified price */
.ds-token-price{display:flex;align-items:baseline;gap:8px;flex-wrap:wrap;margin:2px 0 2px}
.ds-token-price b{font-size:clamp(26px,6.5vw,36px);font-weight:800;color:var(--ds-ink)}
.ds-token-price-vat{color:var(--ds-warn);font-size:13px;font-weight:700}
.ds-token-price-sub{font-size:13.5px;color:var(--ds-muted);margin:2px 0 0}

/* 06 promo headline banner (combo 30% + bonus months) */
.ds-promo-banner{display:flex;align-items:center;gap:14px;flex-wrap:wrap;text-decoration:none;background:linear-gradient(120deg,#0a57c2,#0742a0);color:#fff;border-radius:16px;padding:16px 18px;margin-bottom:16px;box-shadow:0 8px 26px rgba(10,87,194,.28)}
.ds-promo-banner:hover{filter:brightness(1.05)}
.ds-promo-banner-badge{flex:0 0 auto;background:#ffd43b;color:#5c3d00;font-weight:900;font-size:20px;border-radius:12px;padding:8px 12px;line-height:1}
.ds-promo-banner-txt{flex:1 1 240px;font-size:14.5px;line-height:1.5;color:#eef4ff}
.ds-promo-banner-txt b{color:#fff}
.ds-promo-banner-cta{flex:0 0 auto;font-weight:800;font-size:14px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.5);border-radius:999px;padding:8px 14px;white-space:nowrap}

/* badges (shared) */
.ds-badge{display:inline-block;font-size:12px;font-weight:800;line-height:1;padding:5px 9px;border-radius:999px}
.ds-badge-hot{background:#ffe3e3;color:#c92a2a}
.ds-badge-gift{background:#e3f2ff;color:#0742a0}
.ds-badge-token{background:#e6f7ee;color:#0a8a4a}

/* 07 CA-IVAN e-commerce cards */
.ds-ci-mode{margin-bottom:16px}
.ds-caivan-cards{display:grid;grid-template-columns:1fr;gap:14px;align-items:stretch}
.ds-ci-card{display:flex;flex-direction:column;gap:8px;background:linear-gradient(180deg,#fff,var(--ds-bg));border:1.5px solid var(--ds-line);border-radius:16px;padding:18px 16px;box-shadow:0 2px 10px rgba(16,32,46,.06)}
.ds-ci-card:nth-child(3){border-color:var(--ds-blue);box-shadow:0 10px 30px rgba(10,87,194,.16)}
.ds-ci-badges{display:flex;flex-wrap:wrap;gap:6px}
.ds-ci-term b{font-size:19px;font-weight:800;color:var(--ds-blue-d)}
.ds-ci-term span{font-size:12.5px;color:var(--ds-muted);display:block;margin-top:2px}
.ds-ci-price{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;margin-top:2px}
.ds-ci-list{color:var(--ds-muted);font-size:15px;text-decoration:line-through}
.ds-ci-final{font-size:clamp(24px,6vw,32px);font-weight:800;color:var(--ds-ink)}
.ds-ci-tokenline{font-size:12.8px;color:var(--ds-muted);line-height:1.45;min-height:18px}
.ds-btn-block{width:100%;margin-top:auto}

/* 04B ký số theo lượt (per-use) */
.ds-sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.ds-perlot-single{background:linear-gradient(180deg,#fff,var(--ds-bg));border:1.5px solid var(--ds-blue);border-radius:16px;padding:18px 16px;box-shadow:0 4px 18px rgba(10,87,194,.1);margin-bottom:22px}
.ds-perlot-single-head{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:8px}
.ds-perlot-single-head h3{margin:0;font-size:18px;font-weight:800;color:var(--ds-blue-d)}
.ds-perlot-single-price{display:flex;align-items:baseline;gap:8px;flex-wrap:wrap;margin:2px 0}
.ds-perlot-single-price b{font-size:clamp(26px,6.5vw,36px);font-weight:800;color:var(--ds-ink)}
.ds-perlot-single-specs{margin:8px 0 0;padding:0;list-style:none;display:flex;flex-wrap:wrap;gap:8px 18px}
.ds-perlot-single-specs li{font-size:14px;color:var(--ds-ink);position:relative;padding-left:20px}
.ds-perlot-single-specs li:before{content:"✓";position:absolute;left:0;top:0;color:var(--ds-ok);font-weight:800}
.ds-perlot-bh{font-size:17px;font-weight:800;color:var(--ds-blue-d);margin:6px 0 4px}
.ds-perlot-tbl-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--ds-line);border-radius:14px;margin-top:4px}
.ds-perlot-tbl{width:100%;border-collapse:collapse;font-size:14px;min-width:520px}
.ds-perlot-tbl thead th{background:var(--ds-bg);color:var(--ds-blue-d);font-weight:800;font-size:13px;text-align:right;padding:11px 12px;white-space:nowrap}
.ds-perlot-tbl thead th:first-child,.ds-perlot-tbl thead th:nth-child(2){text-align:left}
.ds-perlot-tbl td,.ds-perlot-tbl th[scope=row]{padding:11px 12px;border-top:1px solid var(--ds-line);text-align:right}
.ds-perlot-tbl th[scope=row]{text-align:left;font-weight:800;color:var(--ds-blue-d)}
.ds-perlot-tbl td:first-child{text-align:left;color:var(--ds-muted)}
.ds-perlot-tbl tbody tr:nth-child(even){background:#fbfdff}
.ds-perlot-tbl tbody tr:hover{background:var(--ds-bg)}
.ds-perlot-fees{background:var(--ds-card);border:1px solid var(--ds-line);border-radius:14px;padding:16px;margin-top:16px}
.ds-perlot-fees-h{margin:0 0 8px;font-size:15px;font-weight:800;color:var(--ds-ink)}
.ds-perlot-fees-list{margin:0;padding:0;list-style:none;display:grid;gap:8px}
.ds-perlot-fees-list li{display:flex;flex-wrap:wrap;justify-content:space-between;gap:4px 12px;font-size:14px;border-bottom:1px dashed var(--ds-line);padding-bottom:8px}
.ds-perlot-fees-list li:last-child{border-bottom:none;padding-bottom:0}
.ds-perlot-fee-l{font-weight:600;color:var(--ds-ink)}
.ds-perlot-fee-v{color:var(--ds-muted)}
.ds-perlot-notes{margin:12px 0 0;padding-left:20px;display:grid;gap:6px}
.ds-perlot-notes li{font-size:13.2px;line-height:1.5;color:var(--ds-muted)}

/* 07B after-sales */
.ds-as-grid{display:grid;grid-template-columns:1fr;gap:12px}
.ds-as-card{background:var(--ds-card);border:1.5px solid var(--ds-line);border-radius:16px;padding:16px 15px;box-shadow:0 1px 3px rgba(16,32,46,.05)}
.ds-as-ic{font-size:24px;line-height:1}
.ds-as-h{font-size:16px;font-weight:800;color:var(--ds-blue-d);margin:8px 0 4px}
.ds-as-d{font-size:13.8px;line-height:1.55;color:var(--ds-ink);margin:0}

/* 08 hsm */
.ds-hsm-list{margin:0;padding-left:20px;display:grid;gap:8px}
.ds-hsm-list li{font-size:14.5px;line-height:1.55}

/* 09 Q&A */
.ds-qa{display:grid;gap:10px}
.ds-qa-item{background:var(--ds-card);border:1px solid var(--ds-line);border-radius:var(--ds-radius);padding:2px 16px}
.ds-qa-item summary{cursor:pointer;font-weight:700;font-size:15px;padding:14px 0;list-style:none}
.ds-qa-item summary::-webkit-details-marker{display:none}
.ds-qa-item summary:before{content:"+";color:var(--ds-blue);font-weight:800;margin-right:10px}
.ds-qa-item[open] summary:before{content:"–"}
.ds-qa-a{font-size:14px;color:var(--ds-muted);line-height:1.6;padding:0 0 14px}

/* 10 related */
.ds-rel-grid{display:grid;grid-template-columns:1fr;gap:12px}
.ds-rel-card{display:flex;flex-direction:column;gap:4px;text-decoration:none;background:var(--ds-card);border:1px solid var(--ds-line);border-radius:var(--ds-radius);padding:16px;transition:.15s}
.ds-rel-card:hover{border-color:var(--ds-blue);box-shadow:0 2px 10px rgba(10,87,194,.1)}
.ds-rel-name{font-weight:750;font-size:15.5px;color:var(--ds-blue-d)}
.ds-rel-note{font-size:13px;color:var(--ds-muted);line-height:1.45}

/* modal */
.ds-modal[hidden]{display:none}
.ds-modal{position:fixed;inset:0;z-index:9999;display:flex;align-items:center;justify-content:center;padding:16px}
.ds-modal-back{position:absolute;inset:0;background:rgba(16,32,46,.55)}
.ds-modal-box{position:relative;background:#fff;border-radius:16px;max-width:460px;width:100%;max-height:92vh;overflow:auto;padding:22px 20px;box-shadow:0 20px 60px rgba(0,0,0,.3)}
.ds-modal-x{position:absolute;top:10px;right:12px;background:none;border:none;font-size:26px;line-height:1;color:var(--ds-muted);cursor:pointer}
.ds-modal-box h3{margin:0 0 4px;font-size:19px;padding-right:26px}
.ds-modal-sub{margin:0 0 14px;font-size:13.5px;color:var(--ds-muted);line-height:1.5}
.ds-field{display:flex;flex-direction:column;gap:4px;margin-bottom:12px}
.ds-field>span{font-size:13px;font-weight:600}
.ds-field b{color:#c0452a}
.ds-field input,.ds-field select,.ds-field textarea{width:100%;padding:11px 12px;border:1.5px solid var(--ds-line);border-radius:9px;font-size:15px;font-family:inherit}
.ds-field input:focus,.ds-field select:focus,.ds-field textarea:focus{outline:none;border-color:var(--ds-blue)}
.ds-modal-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px}
.ds-modal-msg{font-size:13.5px;margin:4px 0;min-height:1px}
.ds-modal-msg.ds-err,.ds-err{color:#c0452a}
.ds-lead-result{max-width:1120px;margin:0 auto;padding:0 16px}
.ds-lead-result.ds-ok{padding:16px;color:var(--ds-ok);font-weight:600}
body.ds-modal-open{overflow:hidden}

/* ≥601px: intents 3-up; compare 3-up; token 2-up; related 2-up */
@media(min-width:601px){
  .ds-intents{grid-template-columns:repeat(3,1fr)}
  .ds-compare-grid{grid-template-columns:repeat(3,1fr)}
  .ds-token-grid{grid-template-columns:1fr 1fr}
  .ds-promo-cols{grid-template-columns:1fr 1fr}
  .ds-rel-grid{grid-template-columns:1fr 1fr}
  .ds-caivan-cards{grid-template-columns:repeat(3,1fr)}
  .ds-as-grid{grid-template-columns:1fr 1fr}
}
/* ≥768px: related 3-up; after-sales 3-up */
@media(min-width:768px){
  .ds-rel-grid{grid-template-columns:repeat(3,1fr)}
  .ds-as-grid{grid-template-columns:repeat(3,1fr)}
}