:root{--solann-primary:#0d6efd;--solann-primary-dark:#0a58ca;--solann-primary-light:#e0f2fe;--solann-secondary:#10b981;--solann-dark:#0f172a;--solann-dark-surface:#1e293b;--solann-light-bg:#f8fafc;--solann-card-bg:#ffffff;--solann-border-color:#e2e8f0;--solann-accent-gold:#f59e0b;--solann-gradient-primary:linear-gradient(135deg,#0f172a 0%,#1e293b 40%,#0284c7 100%);--solann-gradient-card:linear-gradient(145deg,#ffffff 0%,#f8fafc 100%);--solann-gradient-gold:linear-gradient(135deg,#f59e0b 0%,#d97706 100%);--solann-shadow-sm:0 4px 12px rgba(15,23,42,0.04);--solann-shadow-md:0 10px 25px -5px rgba(15,23,42,0.08);--solann-shadow-lg:0 20px 40px -10px rgba(15,23,42,0.14);--solann-glow-primary:0 0 25px rgba(13,110,253,0.25);}body{font-family:'Be Vietnam Pro',system-ui,-apple-system,sans-serif;color:#334155;background-color:#ffffff;overflow-x:hidden;line-height:1.6;}h1,h2,h3,h4,h5,h6{text-wrap:balance;overflow-wrap:break-word;word-break:break-word;letter-spacing:-0.015em;}.extra-small{font-size:0.75rem;}.max-w-3xl{max-width:48rem;}.max-w-4xl{max-width:56rem;}.text-slate-300{color:#cbd5e1;}.bao-gia-hero{background:var(--solann-gradient-primary);color:#ffffff;padding:4rem 0 3.25rem 0;overflow:hidden;}.bao-gia-hero::before{content:'';position:absolute;top:-40%;right:-15%;width:600px;height:600px;background:radial-gradient(circle,rgba(56,189,248,0.18) 0%,rgba(0,0,0,0) 70%);pointer-events:none;}.bao-gia-badge{display:inline-flex;align-items:center;gap:0.5rem;padding:0.4rem 1.15rem;background:rgba(255,255,255,0.12);backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,0.2);border-radius:50rem;font-size:0.8125rem;font-weight:700;color:#38bdf8;margin-bottom:1.25rem;max-width:100%;}.bao-gia-hero h1{font-size:clamp(1.85rem,4.5vw,3.25rem);font-weight:800;line-height:1.2;}.hero-trust-bar{background:rgba(255,255,255,0.08);backdrop-filter:blur(16px);border:1px solid rgba(255,255,255,0.15);border-radius:1.25rem;padding:1.25rem 1.5rem;margin-top:2rem;}.trust-stat-val{font-size:clamp(1.25rem,3vw,1.6rem);font-weight:800;color:#38bdf8;line-height:1.2;}.trust-stat-lbl{font-size:0.775rem;color:#e2e8f0;font-weight:600;}.step-num-circle{width:38px;height:38px;border-radius:50%;background:var(--solann-primary);color:#ffffff;font-weight:800;font-size:1rem;display:flex;align-items:center;justify-content:center;flex-shrink:0;box-shadow:0 4px 10px rgba(13,110,253,0.25);}.bao-gia-nav-wrapper{position:sticky;top:65px;z-index:90;background:rgba(255,255,255,0.95);backdrop-filter:blur(16px);border-bottom:1px solid var(--solann-border-color);box-shadow:0 4px 15px rgba(15,23,42,0.04);padding:0.75rem 0;}.bao-gia-nav-pills{display:flex;gap:0.5rem;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch;padding-bottom:0.15rem;}.bao-gia-nav-pills::-webkit-scrollbar{display:none;}.nav-pill-btn{white-space:nowrap;border:1px solid var(--solann-border-color);background:#ffffff;color:#475569;font-size:0.85rem;font-weight:700;padding:0.5rem 1.15rem;border-radius:50rem;transition:all 0.25s ease;cursor:pointer;display:inline-flex;align-items:center;gap:0.4rem;flex-shrink:0;}.nav-pill-btn:hover{background:#f1f5f9;color:var(--solann-primary);border-color:#93c5fd;}.nav-pill-btn.active{background:var(--solann-primary);color:#ffffff;border-color:var(--solann-primary);box-shadow:0 4px 12px rgba(13,110,253,0.3);}.pillar-header{margin-bottom:2.25rem;text-align:center;}.pillar-title{font-size:clamp(1.5rem,3.5vw,2.1rem);font-weight:800;color:var(--solann-dark);}.pillar-desc{font-size:0.925rem;color:#64748b;max-width:720px;margin:0.4rem auto 0 auto;}.pricing-card{background:var(--solann-card-bg);border:1px solid var(--solann-border-color);border-radius:1.25rem;padding:1.75rem 1.5rem;height:100%;display:flex;flex-direction:column;position:relative;transition:all 0.3s cubic-bezier(0.4,0,0.2,1);box-shadow:var(--solann-shadow-sm);}.pricing-card:hover{transform:translateY(-5px);box-shadow:var(--solann-shadow-lg);border-color:#93c5fd;}.pricing-card.featured{border:2px solid var(--solann-primary);box-shadow:0 12px 30px rgba(13,110,253,0.12);background:var(--solann-gradient-card);}.pricing-card-header{margin-bottom:0.75rem;}.pricing-name{font-size:1.2rem;font-weight:800;color:var(--solann-dark);margin-bottom:0.3rem;line-height:1.3;}.pricing-subtitle{font-size:0.835rem;color:#64748b;margin-bottom:0;line-height:1.45;}.pricing-price-wrap{margin:0.85rem 0 1rem 0;display:flex;align-items:baseline;gap:0.35rem;flex-wrap:wrap;}.pricing-price-val{font-size:clamp(1.75rem,3.5vw,2.1rem);font-weight:800;color:var(--solann-primary);line-height:1;letter-spacing:-0.02em;}.pricing-card.featured .pricing-price-val{color:var(--solann-primary-dark);}.pricing-price-period{font-size:0.825rem;color:#64748b;font-weight:600;}.pricing-features-list{list-style:none;padding:0;margin:0 0 1.25rem 0;flex-grow:1;}.pricing-features-list li{font-size:0.835rem;color:#334155;margin-bottom:0.65rem;display:flex;align-items:flex-start;gap:0.55rem;line-height:1.4;}.pricing-features-list li i{color:var(--solann-secondary);font-size:1rem;margin-top:0.1rem;flex-shrink:0;}.pricing-card-footer{width:100%;}.btn-pricing{width:100%;padding:0.7rem 1rem;font-size:0.875rem;font-weight:700;border-radius:0.65rem;transition:all 0.25s ease;text-align:center;display:inline-flex;align-items:center;justify-content:center;gap:0.4rem;text-decoration:none;}.btn-pricing-primary{background:var(--solann-primary);color:#ffffff;border:none;box-shadow:0 4px 12px rgba(13,110,253,0.2);}.btn-pricing-primary:hover{background:var(--solann-primary-dark);color:#ffffff;box-shadow:0 6px 16px rgba(13,110,253,0.3);}.btn-pricing-outline{background:transparent;color:var(--solann-primary);border:1.5px solid var(--solann-primary);}.btn-pricing-outline:hover{background:#eff6ff;color:var(--solann-primary-dark);}.backlink-trust-card{background:#ffffff;border:1px solid var(--solann-border-color);border-radius:1.25rem;padding:1.5rem;display:flex;flex-direction:column;justify-content:space-between;transition:all 0.3s cubic-bezier(0.4,0,0.2,1);box-shadow:var(--solann-shadow-sm);}.backlink-trust-card:hover{border-color:#38bdf8;box-shadow:0 12px 28px rgba(15,23,42,0.1);transform:translateY(-4px);}.brand-platform-header{display:flex;align-items:center;justify-content:space-between;gap:0.75rem;margin-bottom:0.85rem;}.brand-header-left{display:flex;align-items:center;gap:0.75rem;min-width:0;flex-grow:1;}.brand-logo-box{width:44px;height:44px;border-radius:0.75rem;background:#f8fafc;border:1px solid #e2e8f0;display:flex;align-items:center;justify-content:center;flex-shrink:0;box-shadow:0 2px 6px rgba(15,23,42,0.04);transition:transform 0.3s ease;}.backlink-trust-card:hover .brand-logo-box{transform:scale(1.08) rotate(-3deg);border-color:#93c5fd;background:#eff6ff;}.trust-card-title{font-size:1.05rem;font-weight:800;color:var(--solann-dark);line-height:1.3;margin:0;}.dr-badge-glow{font-size:0.75rem;font-weight:800;padding:0.3rem 0.75rem;border-radius:50rem;letter-spacing:0.02em;white-space:nowrap;display:inline-flex;align-items:center;gap:0.3rem;flex-shrink:0;margin-left:auto;}.dr-badge-glow.high-dr{background:linear-gradient(135deg,#0284c7 0%,#0369a1 100%);color:#ffffff;box-shadow:0 3px 8px rgba(2,132,199,0.25);}.dr-badge-glow.top-dr{background:linear-gradient(135deg,#7c3aed 0%,#6d28d9 100%);color:#ffffff;box-shadow:0 3px 8px rgba(124,58,237,0.3);}.dr-badge-glow.scholar-dr{background:linear-gradient(135deg,#059669 0%,#047857 100%);color:#ffffff;box-shadow:0 3px 8px rgba(5,150,105,0.25);}.trust-card-metrics-grid{display:flex;gap:0.5rem;margin-bottom:0.85rem;flex-wrap:wrap;}.metric-chip{font-size:0.775rem;font-weight:700;padding:0.25rem 0.65rem;border-radius:0.45rem;background:#f1f5f9;color:#475569;display:inline-flex;align-items:center;gap:0.3rem;}.metric-chip.traffic{background:#e0f2fe;color:#0369a1;}.trust-card-desc{font-size:0.85rem;color:#64748b;margin-bottom:0.95rem;line-height:1.5;min-height:2.5rem;}.trust-card-bottom{margin-top:auto;padding-top:0.85rem;border-top:1px solid #f1f5f9;}.trust-card-price-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:0.75rem;}.trust-card-price-val{font-size:1.35rem;font-weight:800;color:var(--solann-secondary);letter-spacing:-0.02em;}.offpage-card-icon{width:44px;height:44px;border-radius:0.75rem;display:flex;align-items:center;justify-content:center;font-size:1.3rem;flex-shrink:0;}.offpage-card-icon.blue{background:#eff6ff;color:var(--solann-primary);}.offpage-card-icon.green{background:#ecfdf5;color:#10b981;}.offpage-card-icon.purple{background:#f3e8ff;color:#9333ea;}.offpage-card-icon.red{background:#fef2f2;color:#ef4444;}.pricing-calculator-box{background:var(--solann-gradient-primary);color:#ffffff;border-radius:1.5rem;padding:2.25rem 1.75rem;box-shadow:0 15px 40px rgba(15,23,42,0.2);}.calc-title{font-size:clamp(1.4rem,3vw,1.7rem);font-weight:800;color:#ffffff;margin-bottom:0.4rem;}.calc-label{font-size:0.825rem;font-weight:700;color:#cbd5e1;margin-bottom:0.35rem;}.calc-select,.calc-input{background:rgba(255,255,255,0.12);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,0.22);color:#ffffff;border-radius:0.65rem;padding:0.65rem 0.85rem;width:100%;font-size:0.9rem;font-weight:600;}.calc-select option{background:var(--solann-dark);color:#ffffff;}.calc-select:focus,.calc-input:focus{outline:none;border-color:#38bdf8;background:rgba(255,255,255,0.18);}.calc-result-card{background:rgba(255,255,255,0.1);backdrop-filter:blur(16px);border:1px solid rgba(255,255,255,0.2);border-radius:1.25rem;padding:1.5rem;text-align:center;}.calc-result-val{font-size:clamp(1.75rem,4vw,2.35rem);font-weight:800;color:#38bdf8;line-height:1.15;margin:0.4rem 0;letter-spacing:-0.02em;word-break:break-word;}.discount-badge{display:inline-block;background:#10b981;color:#ffffff;font-size:0.75rem;font-weight:800;padding:0.25rem 0.75rem;border-radius:50rem;}.comparison-table-wrapper{background:#ffffff;border-radius:1.25rem;border:1px solid var(--solann-border-color);box-shadow:var(--solann-shadow-sm);overflow-x:auto;-webkit-overflow-scrolling:touch;}.custom-comparison-table{width:100%;border-collapse:collapse;font-size:0.875rem;min-width:650px;}.custom-comparison-table th,.custom-comparison-table td{padding:1rem 1.25rem;border-bottom:1px solid var(--solann-border-color);vertical-align:middle;}.custom-comparison-table th{background:#f8fafc;font-weight:800;color:var(--solann-dark);}.solann-col-header{background:#eff6ff !important;color:var(--solann-primary) !important;border-top:3px solid var(--solann-primary);}.solann-col-cell{background:#f8fafc;font-weight:600;color:var(--solann-dark);}.trust-proof-box{background:#f8fafc;border:1.5px dashed #cbd5e1;border-radius:1.25rem;padding:1.75rem;}.trust-proof-item{display:flex;align-items:center;gap:0.85rem;}.trust-proof-icon{width:46px;height:46px;border-radius:0.75rem;background:#eff6ff;color:var(--solann-primary);display:flex;align-items:center;justify-content:center;font-size:1.35rem;flex-shrink:0;}.faq-accordion .accordion-item{border:1px solid var(--solann-border-color);border-radius:0.75rem !important;margin-bottom:0.75rem;overflow:hidden;}.faq-accordion .accordion-button{font-weight:700;font-size:0.95rem;color:var(--solann-dark);padding:1.1rem 1.25rem;}.faq-accordion .accordion-button:not(.collapsed){background-color:#f1f5f9;color:var(--solann-primary);}.faq-accordion .accordion-body{padding:1.1rem 1.25rem;color:#475569;line-height:1.6;font-size:0.875rem;}