/* Trang chi tiết sản phẩm (bài giới thiệu chuẩn SEO & Giao diện Commercial Spec). */
.pd-sec{scroll-margin-top:80px}
.pd-alt{background:var(--dh-c-soft,#F4F8FC)}
.pd-head{display:flex;flex-direction:column;gap:10px;margin-bottom:28px;max-width:760px}
.pd-two{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.6fr);gap:clamp(24px,5vw,72px);align-items:start}
.pd-two .pd-head{margin-bottom:0}
.pd-prose{max-width:760px}
.pd-prose p{margin:0 0 16px;font-size:16.5px;line-height:1.75;color:var(--dh-c-body,#334155)!important}
.pd-prose .pd-note{margin-top:20px;padding:14px 16px;border-left:4px solid var(--dh-c-accent,#F59E0B);background:var(--dh-c-tint,#FFF8EB);border-radius:8px;font-size:15px}
.pd-toc{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.pd-toc a{font-size:13.5px;font-weight:600;padding:6px 14px;border:1px solid var(--dh-c-line,#E3EAF2);border-radius:999px;color:var(--dh-c-ink,#0B1B2B);text-decoration:none;background:#fff;transition:all .15s}
.pd-toc a:hover{border-color:var(--dh-c-blue,#0A6CD6);color:var(--dh-c-blue,#0A6CD6);box-shadow:0 2px 8px rgba(10,108,214,.1)}

/* ================= HERO COMMERCIAL SPEC LAYOUT (KHỐI TRÊN CÙNG) ================= */
.pd-hero-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:36px;align-items:start;margin-top:20px}
.pd-gallery-wrap{display:flex;flex-direction:column;gap:12px}
.pd-main-img-box{position:relative;width:100%;aspect-ratio:16/10;background:#0F172A;border-radius:16px;overflow:hidden;border:1px solid #E2E8F0;box-shadow:0 10px 25px -5px rgba(15,23,42,0.08)}
.pd-main-img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .3s ease}
.pd-main-img-box:hover .pd-main-img{transform:scale(1.02)}
.pd-img-badge{position:absolute;top:14px;left:14px;background:rgba(15,23,42,0.85);backdrop-filter:blur(8px);color:#fff;font-size:11.5px;font-weight:700;padding:4px 10px;border-radius:6px;letter-spacing:0.04em;text-transform:uppercase;border:1px solid rgba(255,255,255,0.15)}

.pd-thumbs-row{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.pd-thumb-btn{position:relative;aspect-ratio:16/10;background:#F1F5F9;border-radius:10px;overflow:hidden;border:2px solid transparent;cursor:pointer;padding:0;transition:all .2s ease}
.pd-thumb-btn img{width:100%;height:100%;object-fit:cover;display:block}
.pd-thumb-btn:hover{transform:translateY(-2px);border-color:#93C5FD}
.pd-thumb-btn.active{border-color:var(--dh-c-blue,#0A6CD6);box-shadow:0 0 0 2px rgba(10,108,214,0.2)}

.pd-hero-info{display:flex;flex-direction:column;gap:14px}
.pd-h1{font-size:clamp(24px,2.4vw,34px);font-weight:800;color:var(--dh-c-ink,#0B1B2B);line-height:1.25;margin:0}
.pd-date-meta{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--dh-c-muted,#64748B)}
.pd-price-row{display:flex;align-items:baseline;gap:8px;padding:10px 0;border-bottom:1px solid var(--dh-c-line,#E2E8F0)}
.pd-price-label{font-size:14.5px;font-weight:600;color:var(--dh-c-muted,#64748B)}
.pd-price-val{font-size:24px;font-weight:800;color:var(--dh-c-blue,#0077D6)}

.pd-quick-specs{list-style:none;margin:4px 0 12px;padding:0;display:flex;flex-direction:column;gap:10px}
.pd-quick-specs li{display:grid;grid-template-columns:130px 1fr;gap:12px;font-size:14px;line-height:1.5}
.pd-quick-specs li strong{color:var(--dh-c-ink,#1E293B);font-weight:700}
.pd-quick-specs li span{color:var(--dh-c-body,#475569)}

.pd-cta-group{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:6px}
.pd-btn-call{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border:2px solid var(--dh-c-blue,#0077D6);color:var(--dh-c-blue,#0077D6);background:#fff;border-radius:10px;font-weight:700;font-size:14.5px;text-decoration:none;transition:all .2s}
.pd-btn-call:hover{background:var(--dh-c-tint,#F0F7FF)}
.pd-btn-order{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;background:var(--dh-c-blue,#0077D6);color:#fff;border-radius:10px;font-weight:700;font-size:14.5px;text-decoration:none;border:none;cursor:pointer;transition:all .2s;box-shadow:0 4px 14px rgba(0,119,214,0.25)}
.pd-btn-order:hover{background:var(--dh-c-blue-d,#005FAD);color:#fff;transform:translateY(-1px)}

/* ================= 70/30 BODY WITH STICKY SIDEBAR ================= */
.pd-body-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:40px;align-items:start}
.pd-content-col{min-width:0}
.pd-sidebar-col{position:sticky;top:90px;display:flex;flex-direction:column;gap:20px}

/* Box thông tin liên hệ chuẩn xanh thương hiệu DH */
.pd-contact-box{background:#fff;border:1px solid #E2E8F0;border-radius:14px;overflow:hidden;box-shadow:0 4px 18px rgba(0,0,0,0.04)}
.pd-contact-head{background:linear-gradient(135deg,#005FAD,#0077D6);color:#fff;padding:12px 18px;font-size:15px;font-weight:800;letter-spacing:0.04em;text-transform:uppercase;text-align:center}
.pd-contact-body{padding:18px;display:flex;flex-direction:column;gap:12px;font-size:13.5px}
.pd-contact-item{display:flex;align-items:flex-start;gap:10px;color:var(--dh-c-body,#334155);line-height:1.5}
.pd-contact-item svg{flex-shrink:0;margin-top:2px;color:var(--dh-c-blue,#0077D6)}
.pd-contact-item a{color:#0077D6;text-decoration:none;font-weight:600}
.pd-contact-item a:hover{text-decoration:underline}

/* Tiêu đề section có vạch kẻ xanh thương hiệu */
.pd-block-title{font-size:20px;font-weight:800;color:var(--dh-c-ink,#0B1B2B);margin:0 0 16px;position:relative;padding-bottom:10px;border-bottom:2px solid #E2E8F0}
.pd-block-title::after{content:'';position:absolute;left:0;bottom:-2px;width:60px;height:2px;background:var(--dh-c-blue,#0077D6)}

/* BẢNG THÔNG SỐ KỸ THUẬT (2 CỘT CHUẨN MẪU BĐS) */
.pd-specs-table{width:100%;border-collapse:collapse;border:1px solid #E2E8F0;font-size:14px;border-radius:10px;overflow:hidden;margin:16px 0 28px}
.pd-specs-table tr{border-bottom:1px solid #E2E8F0}
.pd-specs-table tr:last-child{border-bottom:none}
.pd-specs-table td{padding:12px 16px;line-height:1.55}
.pd-specs-table .pd-spec-name{width:32%;background:#F8FAFC;font-weight:700;color:#475569;text-transform:uppercase;font-size:12.5px;letter-spacing:0.02em}
.pd-specs-table .pd-spec-val{background:#fff;color:var(--dh-c-ink,#1E293B)}

/* Features, Steps & FAQs */
.pd-grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.pd-card{display:flex;flex-direction:column;gap:8px;padding:24px;border:1px solid var(--dh-c-line,#E3EAF2);border-radius:16px;background:#fff;text-decoration:none}
.pd-card h3{margin:0;font-size:18px;line-height:1.35;font-weight:700}
.pd-card h3 small{font-size:12px;font-weight:700;color:var(--dh-c-accent,#B45309);margin-left:6px}
.pd-card p{margin:0;font-size:14.5px;line-height:1.6;color:var(--dh-c-body,#475569)!important}
.pd-link{transition:border-color .15s,box-shadow .15s}
.pd-link:hover{border-color:var(--dh-c-blue,#0A6CD6);box-shadow:0 8px 24px rgba(10,108,214,.08)}
.pd-link span{margin-top:auto;padding-top:8px;font-weight:700;font-size:14px;color:var(--dh-c-blue-d,#0855AB)}

.pd-features{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.pd-feature{padding:24px;border:1px solid var(--dh-c-line,#E3EAF2);border-radius:16px;background:#fff}
.pd-feature h3{margin:0 0 6px;font-size:19px;line-height:1.3;font-weight:700}
.pd-feature .pd-feature-lead{margin:0 0 14px;font-size:14px;color:var(--dh-c-muted,#5B6B7F)!important}
.pd-feature ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.pd-feature li{display:grid;grid-template-columns:18px minmax(0,1fr);gap:10px;align-items:start;font-size:14.5px;line-height:1.55;color:var(--dh-c-body,#334155)}
.pd-feature li svg{margin-top:3px}

.pd-steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.pd-steps li{padding:20px;border-radius:14px;background:#fff;border:1px solid var(--dh-c-line,#E3EAF2)}
.pd-num{display:inline-block;font-size:14px;font-weight:800;color:var(--dh-c-blue,#0A6CD6);margin-bottom:8px}
.pd-steps h3{margin:0 0 6px;font-size:16px;font-weight:700}
.pd-steps p{margin:0;font-size:14px;line-height:1.6;color:var(--dh-c-body,#475569)!important}

.pd-faq{max-width:880px}
.pd-faq details{border-bottom:1px solid var(--dh-c-line,#E3EAF2);padding:6px 0;transition:all .2s ease}
.pd-faq summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:14px 4px;transition:color .15s ease}
.pd-faq summary:hover{color:var(--dh-c-blue,#0A6CD6)}
.pd-faq summary::-webkit-details-marker{display:none}
.pd-faq summary::after{content:'+';font-size:22px;font-weight:600;color:var(--dh-c-blue,#0A6CD6);transition:transform .2s ease}
.pd-faq details[open] summary::after{content:'–';transform:rotate(180deg)}
.pd-faq summary h3{margin:0;font-size:16.5px;font-weight:700;line-height:1.4}
.pd-faq details p{margin:0 0 14px;font-size:15.5px;line-height:1.7;color:var(--dh-c-body,#334155)!important}

@media (max-width:1080px){
  .pd-hero-grid{grid-template-columns:1fr;gap:24px}
  .pd-body-layout{grid-template-columns:1fr}
  .pd-sidebar-col{position:static;width:100%}
  .pd-steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .pd-grid3{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:760px){
  .pd-features,.pd-grid3,.pd-steps{grid-template-columns:1fr}
  .pd-quick-specs li{grid-template-columns:1fr;gap:4px}
  .pd-specs-table .pd-spec-name{width:40%}
}