* { margin: 0; padding: 0; box-sizing: border-box; }
.ti { display: inline-block; vertical-align: middle; flex-shrink: 0; }
html { scroll-behavior: smooth; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; color: #0F1111; background: #fff; line-height: 1.6; font-size: 15px; -webkit-font-smoothing: antialiased; }
a { color: #007185; text-decoration: none; }
.skip-link:focus { top: 0 !important; }
.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

header { background: #131921; padding: 0 24px; position: sticky; top: 0; z-index: 100; height: 72px; transition: height 0.25s, box-shadow 0.25s; }
header.scrolled { height: 60px; box-shadow: 0 2px 12px rgba(0,0,0,0.4); }
header .container { display: flex; align-items: center; justify-content: space-between; height: 100%; }
.logo-wrap { display: flex; flex-direction: column; }
.logo { color: #fff; font-size: 20px; font-weight: 800; letter-spacing: 0.5px; line-height: 1.1; }
.logo span { color: #FF9900; }
.logo-phone { color: #fff; font-size: 12px; font-weight: 700; letter-spacing: 0.5px; }
.logo-phone a { color: inherit; text-decoration: none; }
nav ul { list-style: none; display: flex; gap: 6px; }
nav a { color: #d4d4d4; font-size: 14px; text-decoration: none; font-weight: 500; padding: 7px 16px; border-radius: 3px; }
nav a.active { color: #fff; background: rgba(255,255,255,0.1); }
.menu-toggle { display: none; background: none; border: 1px solid #555; color: #fff; padding: 4px 10px; cursor: pointer; font-size: 16px; border-radius: 3px; }

.article-hero { position: relative; background: #232F3E; padding: 40px 0; text-align: center; overflow: hidden; }
.article-hero-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0.25; }
.article-hero-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(19,25,33,0.85), rgba(35,47,62,0.7)); z-index: 1; }
.article-hero .container { position: relative; z-index: 2; display: flex; flex-direction: column; align-items: center; gap: 10px; }
.breadcrumb { font-size: 13px; color: #9a9a9a; }
.breadcrumb a { color: #FF9900; }
.article-hero h1 { font-size: 28px; font-weight: 800; color: #fff; line-height: 1.35; max-width: 700px; }
.article-date { font-size: 13px; color: #b8b8b8; display: flex; align-items: center; gap: 6px; }
.bar-center { width: 36px; height: 3px; background: #FF9900; border-radius: 2px; margin-top: 4px; }

.article-wrap { padding: 48px 0 40px; }
.article-body p { font-size: 16px; color: #37475A; line-height: 1.85; margin-bottom: 20px; }
.article-body img { max-width: 100%; height: auto; border-radius: 6px; margin: 16px 0; }
.article-body h2 { font-size: 22px; font-weight: 700; color: #131921; margin: 36px 0 14px; padding-bottom: 8px; border-bottom: 2px solid #FF9900; display: inline-block; }
.article-body h3 { font-size: 18px; font-weight: 700; color: #131921; margin: 16px 0 8px; padding-bottom: 6px; border-bottom: 2px solid #FF9900; display: inline-block; }
.article-body h4 { font-size: 16px; font-weight: 600; color: #131921; margin: 14px 0 6px; }
.article-body ul, .article-body ol { padding-left: 24px; margin-bottom: 20px; }
.article-body li { font-size: 15px; color: #37475A; line-height: 1.7; margin-bottom: 6px; }
.article-body a { color: #007185; text-decoration: underline; }
.article-body .blog-faq h2 { font-size: 20px; font-weight: 700; color: #131921; margin-bottom: 16px; padding-bottom: 8px; border-bottom: 2px solid #FF9900; display: inline-block; }
.article-body .blog-faq .faq-q { width: 100%; background: none; border: none; padding: 14px 18px; display: flex; justify-content: space-between; align-items: center; cursor: pointer; font-family: inherit; font-size: 15px; font-weight: 600; color: #131921; text-align: left; }
.article-body .blog-faq .faq-q::after { content: '\25BE'; font-size: 14px; color: #9a9a9a; transition: transform 0.3s; flex-shrink: 0; margin-left: 12px; }
.article-body .blog-faq .faq-q.open::after { transform: rotate(180deg); }
.article-body .blog-faq .faq-item { border: 1px solid #e0e0e0; border-radius: 6px; margin-bottom: 8px; background: #fff; overflow: hidden; }
.article-body .blog-faq .faq-a { max-height: 0; overflow: hidden; transition: max-height 0.35s ease, padding 0.35s ease; padding: 0 18px; }
.article-body .blog-faq .faq-a.open { max-height: 500px; padding: 0 18px 14px; }
.article-body .blog-faq .faq-a p { font-size: 14px; color: #4a4a4a; line-height: 1.65; margin-bottom: 0; }

.blog-pricing { margin: 28px 0; padding: 24px; background: #F6F6F6; border-radius: 8px; border: 1px solid #e0e0e0; }
.blog-pricing-head { font-size: 18px; font-weight: 700; color: #131921; margin-bottom: 16px; padding-bottom: 8px; border-bottom: 2px solid #FF9900; display: inline-block; }
.pricing-grid { display: grid; gap: 12px; width: 100%; }
.pricing-grid[data-cols="1"] { grid-template-columns: 1fr; }
.pricing-grid[data-cols="2"] { grid-template-columns: repeat(2, 1fr); }
.pricing-grid[data-cols="3"] { grid-template-columns: repeat(3, 1fr); }
.pricing-grid[data-cols="4"] { grid-template-columns: repeat(4, 1fr); }
.pc { background: #fff; border: 1px solid #e0e0e0; border-radius: 6px; overflow: hidden; }
.pc-head { padding: 16px; border-bottom: 1px solid #f0f0f0; }
.pc-name { font-size: 14px; font-weight: 700; color: #131921; }
.pc-desc { font-size: 11px; color: #4a4a4a; margin-top: 2px; }
.pc-price { margin-top: 8px; font-size: 22px; font-weight: 800; color: #FF9900; }
.pc-body { padding: 14px 16px 16px; }
.pc-list { list-style: none; margin: 0 0 12px; }
.pc-list li { font-size: 12px; color: #37475A; padding: 4px 0; display: flex; align-items: center; gap: 6px; }
.pc-list li::before { content: '\2713'; color: #25D366; font-weight: 700; font-size: 10px; }
a.pc-btn { display: block; text-align: center; padding: 10px; background: #131921; color: #fff; border-radius: 4px; font-size: 13px; font-weight: 600; text-decoration: none; transition: background 0.15s; }
a.pc-btn:hover { background: #232F3E; color: #fff; }
.article-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 48px; padding-top: 32px; border-top: 1px solid #e0e0e0; }
.article-nav-item { background: #F6F6F6; border: 1px solid #e0e0e0; border-radius: 6px; padding: 20px; transition: transform 0.2s, box-shadow 0.2s; }
.article-nav-item:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.08); }
.article-nav-item a { text-decoration: none; display: block; }
.article-nav-label { font-size: 11px; color: #FF9900; text-transform: uppercase; font-weight: 700; letter-spacing: 0.5px; margin-bottom: 6px; }
.article-nav-title { font-size: 14px; font-weight: 600; color: #131921; line-height: 1.4; }
.article-nav-item.next { text-align: right; }

.related-section { background: #F6F6F6; padding: 48px 0 60px; }
.related-section h2 { font-size: 20px; font-weight: 700; color: #131921; margin-bottom: 24px; }
.related-section .bar { margin: 8px 0 24px; }
.related-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.related-card { background: #fff; border: 1px solid #e0e0e0; border-radius: 6px; overflow: hidden; display: flex; transition: transform 0.2s, box-shadow 0.2s; }
.related-card:hover { transform: translateY(-3px); box-shadow: 0 6px 16px rgba(0,0,0,0.08); }
.related-card img { width: 120px; min-height: 100%; object-fit: cover; flex-shrink: 0; }
.related-card-body { padding: 14px 16px; display: flex; flex-direction: column; justify-content: center; min-width: 0; }
.related-card-date { font-size: 11px; color: #9a9a9a; margin-bottom: 4px; }
.related-card-body h3 { font-size: 13px; font-weight: 700; color: #131921; line-height: 1.4; margin-bottom: 6px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-card-body h3 a { color: inherit; text-decoration: none; }
.related-card-body h3 a:hover { color: #FF9900; }
.related-card-link { font-size: 12px; font-weight: 600; color: #FF9900; }
.related-card-link:hover { color: #cc7a00; }

footer { background: #131921; color: #9a9a9a; font-size: 13px; }
.footer-main { padding: 36px 0 24px; border-bottom: 1px solid #37475A; }
.footer-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.footer-col h4 { color: #fff; font-size: 15px; margin-bottom: 14px; font-weight: 600; }
.footer-col p { color: #a3a3a3; font-size: 13px; line-height: 1.6; }
.footer-col a { display: block; color: #a3a3a3; font-size: 13px; padding: 3px 0; }
.footer-col .contact-link { color: #d4d4d4; font-size: 13px; padding: 3px 0; display: flex; align-items: center; gap: 8px; }
.footer-col .contact-link .ti { color: #FF9900; width: 16px; height: 16px; flex-shrink: 0; }
.footer-bottom { padding: 14px 0; text-align: center; }

.modal-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.7); z-index: 1000; justify-content: center; align-items: center; padding: 20px; }
.modal-overlay.active { display: flex; }
.modal { background: #fff; border-radius: 10px; max-width: 600px; width: 100%; max-height: 80vh; overflow-y: auto; padding: 32px; position: relative; }
.modal-close { position: absolute; top: 16px; right: 16px; background: none; border: none; font-size: 24px; cursor: pointer; color: #9a9a9a; line-height: 1; z-index: 10; }
.modal h3 { font-size: 18px; font-weight: 700; color: #131921; margin-bottom: 20px; }
.modal h4 { font-size: 14px; font-weight: 600; color: #131921; margin-top: 18px; margin-bottom: 6px; }
.modal p, .modal ul { font-size: 13px; color: #37475A; line-height: 1.7; margin-bottom: 8px; }
.modal ul { padding-left: 18px; }
.modal ul li { margin-bottom: 4px; }

.floating-btns { position: fixed; bottom: 24px; right: 24px; display: flex; flex-direction: column; gap: 10px; z-index: 500; }
.floating-btn { width: 68px; height: 68px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 26px; color: #fff; text-decoration: none; box-shadow: 0 3px 12px rgba(0,0,0,0.25); }
.floating-btn .ti { width: 28px; height: 28px; }
.floating-btn.phone-btn { background: #007185; margin-bottom: 8px; }
.floating-btn.wa-btn { background: #25D366; position: relative; }
@keyframes waAggressivePulse {
  0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.9); }
  15% { transform: scale(1.15); box-shadow: 0 0 0 12px rgba(37, 211, 102, 0.4); }
  30% { transform: scale(1); box-shadow: 0 0 0 25px rgba(37, 211, 102, 0); }
  50% { transform: scale(1.1); box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.6); }
  65% { transform: scale(1); box-shadow: 0 0 0 18px rgba(37, 211, 102, 0); }
  100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}
.floating-btn.wa-btn:not(.wa-popup-open) { animation: waAggressivePulse 2s ease-in-out infinite; }
.floating-btn.wa-btn.wa-popup-open { animation: none !important; box-shadow: 0 3px 12px rgba(0,0,0,0.25) !important; transform: scale(1) !important; }
.wa-badge { position: absolute; top: -4px; right: -4px; background: #e74c3c; color: #fff; font-size: 11px; font-weight: 700; width: 20px; height: 20px; border-radius: 50%; display: flex; align-items: center; justify-content: center; border: 2px solid #fff; z-index: 1; }
.wa-popup-open .wa-badge { display: none; }
.wa-badge.no-blink { animation: none; }
.wa-popup { position: fixed; bottom: 100px; right: 24px; width: 320px; background: #fff; border-radius: 8px; box-shadow: 0 5px 25px rgba(0,0,0,0.2); z-index: 600; display: none; overflow: hidden; }
.wa-popup.show { display: block; }
.wa-popup-header { background: linear-gradient(135deg, #1a5c2e 0%, #25D366 100%); padding: 14px 16px; display: flex; align-items: center; gap: 10px; }
.wa-popup-avatar { position: relative; width: 40px; height: 40px; border-radius: 50%; overflow: visible; }
.wa-popup-avatar img { width: 40px; height: 40px; border-radius: 50%; object-fit: cover; border: 2px solid #25D366; }
.wa-popup-online { position: absolute; bottom: 0; right: 0; width: 12px; height: 12px; background: #25D366; border-radius: 50%; border: 2px solid #fff; animation: onlinePulse 1.5s infinite; }
@keyframes onlinePulse { 0% { opacity: 1; } 50% { opacity: 0.4; } 100% { opacity: 1; } }
.wa-popup-info { flex: 1; }
.wa-popup-info h4 { color: #fff; font-size: 14px; font-weight: 600; margin-bottom: 2px; }
.wa-popup-info p { color: rgba(255,255,255,0.85); font-size: 12px; }
.wa-popup-close { background: none; border: none; color: #fff; font-size: 20px; cursor: pointer; position: absolute; top: 8px; right: 12px; }
.wa-popup-body { padding: 14px 16px; }
.wa-popup-msg { background: #e5f5e0; padding: 10px 14px; border-radius: 0 8px 8px 8px; font-size: 13px; color: #1a1a1a; line-height: 1.5; display: inline-block; max-width: 100%; }
.wa-popup-msg span { font-size: 11px; color: #666; display: inline; }
.wa-ticks { display: inline-flex; align-items: center; margin-left: 4px; vertical-align: middle; }
.wa-ticks svg { width: 16px; height: 10px; }
.wa-popup-actions { display: none; }

@media (max-width: 768px) {
  header .container { padding: 0 16px; }
  header { height: 72px; padding: 0; }
  header.scrolled { height: 72px; }
  nav ul { display: none; }
  .menu-toggle { display: block; flex-shrink: 0; }
  nav ul.open { display: flex; flex-direction: column; position: fixed; top: 72px; left: 0; right: 0; background: #131921; padding: 14px 24px; gap: 4px; z-index: 200; border-bottom: 2px solid #FF9900; max-height: calc(100vh - 72px); overflow-y: auto; }
  .article-hero h1 { font-size: 22px; }
  .pricing-grid[data-cols="3"],.pricing-grid[data-cols="4"] { grid-template-columns: repeat(2, 1fr); }
  .blog-pricing { padding: 16px; }
  .article-nav { grid-template-columns: 1fr; }
  .article-nav-item.next { text-align: left; }
  .related-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .floating-btns { display: none !important; }
  .popup-desktop-actions { display: none !important; }
  .wa-popup { width: 100%; right: 0; left: 0; bottom: 56px; border-radius: 0; box-shadow: none; max-height: calc(100vh - 56px); overflow-y: auto; }
  .wa-popup-header, .wa-popup-body { display: none; }
  .wa-popup.show .wa-popup-header { display: flex; border-radius: 0; }
  .wa-popup.show .wa-popup-body { display: block; padding: 14px 16px; }
  .wa-popup-msg { border-radius: 8px; }
  .wa-popup-actions { display: flex !important; position: fixed; bottom: 0; left: 0; right: 0; background: #131921; z-index: 9999; padding: 8px 16px; gap: 10px; }
  .wa-popup-actions a { flex: 1; display: flex; align-items: center; justify-content: center; gap: 6px; padding: 10px 0; border-radius: 4px; font-size: 13px; font-weight: 600; font-family: inherit; text-decoration: none; color: #fff; }
  .wa-popup-actions a:first-child { background: #007185; }
  .wa-popup-actions a:last-child { background: #25D366; }
  .wa-popup-close { display: none; }
  .wa-popup.show .wa-popup-close { display: block; }
}
@media (max-width: 480px) {
  .pricing-grid[data-cols="2"],.pricing-grid[data-cols="3"],.pricing-grid[data-cols="4"] { grid-template-columns: 1fr; }
}