body { font-family: 'Segoe UI', Arial, sans-serif; margin: 0; background: #f6f8fa; color: #23272f; }
.topbar { background: #fff; border-bottom: 1.5px solid #e2e8f0; box-shadow: 0 2px 8px rgba(37,99,235,0.04); position: sticky; top: 0; z-index: 10; }
.nav-inner { max-width: 1080px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; height: 54px; }
.brand { display: flex; align-items: center; text-decoration: none; }
.brand-icon { margin-right: 8px; }
.brand-text { font-weight: bold; font-size: 1.2rem; color: #2563eb; }
.menu { list-style: none; display: flex; gap: 18px; margin: 0; padding: 0; }
.menu-link { color: #23272f; text-decoration: none; font-weight: 500; padding: 6px 16px; border-radius: 20px; transition: background .2s; }
.menu-link.active { background: linear-gradient(90deg, #2563eb 60%, #38bdf8 100%); color: #fff; box-shadow: 0 2px 8px rgba(37,99,235,0.12); }
.menu-link:hover:not(.active) { background: #f1f5f9; }
.hero-panel { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; max-width: 900px; margin: 32px auto 0; padding: 18px 12px 0; background: #f8fafc; border-radius: 14px; box-shadow: 0 2px 12px rgba(37,99,235,0.05); }
.hero-content { max-width: 480px; }
.hero-title { font-size: 2.1rem; font-weight: 700; margin-bottom: 16px; color: #2563eb; }
.hero-desc { font-size: 1.1rem; color: #475569; margin-bottom: 22px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-visual { flex: 1; min-width: 220px; text-align: center; }
.btn { background: #fff; color: #2563eb; border: 1.5px solid #2563eb; border-radius: 22px; padding: 8px 24px; font-size: 1rem; font-weight: 500; cursor: pointer; transition: background .18s, color .18s; outline: none; }
.btn-primary { background: linear-gradient(90deg, #2563eb 60%, #38bdf8 100%); color: #fff; border: none; }
.btn:hover, .btn:focus { background: #e0e7ef; color: #2563eb; }
.btn-primary:hover, .btn-primary:focus { background: linear-gradient(90deg, #1e40af 60%, #0ea5e9 100%); color: #fff; }
.features { max-width: 900px; margin: 32px auto 0; padding: 0 12px; }
.sec-title { font-size: 1.4rem; font-weight: 700; margin-bottom: 18px; color: #2563eb; }
.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 22px; }
.feature-card { background: #fff; border-radius: 14px; box-shadow: 0 2px 16px rgba(56,189,248,0.07); padding: 22px 18px; display: flex; flex-direction: column; align-items: flex-start; gap: 10px; }
.feature-icon svg { display: block; }
.feature-name { font-size: 1.1rem; font-weight: 600; margin: 0 0 4px 0; color: #2563eb; }
.feature-desc { color: #475569; font-size: 0.98rem; }
.reviews { max-width: 900px; margin: 32px auto 0; padding: 0 12px; }
.review-grid { display: flex; gap: 18px; flex-wrap: wrap; }
.review-card { background: #f1f5f9; border-radius: 14px; padding: 18px 16px; display: flex; align-items: flex-start; gap: 12px; min-width: 260px; flex: 1; }
.review-avatar svg { display: block; }
.review-content strong { font-weight: 600; color: #2563eb; }
.review-content span { display: block; font-size: 0.95rem; color: #64748b; margin-bottom: 2px; }
.review-content p { margin: 0; color: #23272f; font-size: 0.98rem; }
.faq { max-width: 900px; margin: 32px auto 0; padding: 0 12px; }
.faq-list { list-style: none; padding: 0; margin: 0; }
.faq-item { background: #fff; border-radius: 10px; box-shadow: 0 1px 8px rgba(37,99,235,0.04); margin-bottom: 14px; overflow: hidden; }
.faq-q { font-weight: 600; color: #2563eb; padding: 16px 44px 16px 18px; cursor: pointer; user-select: none; position: relative; margin: 0; }
.faq-q::after { content: ''; position: absolute; right: 18px; top: 50%; transform: translateY(-50%) rotate(0deg); border: 6px solid transparent; border-top: 7px solid #2563eb; transition: transform .25s; }
.faq-item.open .faq-q::after { transform: translateY(-70%) rotate(180deg); }
.faq-a { color: #475569; font-size: 0.98rem; max-height: 0; overflow: hidden; transition: max-height .3s ease, padding .3s ease; padding: 0 18px; }
.faq-item.open .faq-a { max-height: 600px; padding: 0 18px 16px; }
.site-footer { background: #f1f5f9; border-top: 1.5px solid #e2e8f0; margin-top: 48px; }
.footer-inner { max-width: 1080px; margin: 0 auto; padding: 28px 20px; text-align: center; }
.footer-brand { font-weight: bold; color: #2563eb; font-size: 1.05rem; margin-bottom: 8px; }
.footer-note { color: #64748b; font-size: 0.97rem; line-height: 1.7; }

/* Download page styles */
.dl-hero { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; max-width: 900px; margin: 32px auto 0; padding: 18px 12px 0; background: #f8fafc; border-radius: 14px; box-shadow: 0 2px 12px rgba(37,99,235,0.05); }
.dl-main { max-width: 480px; }
.dl-title { font-size: 2rem; color: #2563eb; margin-bottom: 12px; }
.dl-meta { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 18px; }
.dl-meta-item { background: #e0f2fe; color: #2563eb; border-radius: 12px; padding: 4px 12px; font-size: 0.98rem; }
.dl-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }
.dl-visual { flex: 1; min-width: 180px; text-align: center; }
.dl-guide { max-width: 900px; margin: 32px auto 0; padding: 0 12px; }
.guide-steps { display: flex; gap: 18px; flex-wrap: wrap; }
.gstep { background: #fff; border-radius: 12px; box-shadow: 0 1px 8px rgba(37,99,235,0.04); padding: 16px 18px; flex: 1; min-width: 180px; display: flex; align-items: flex-start; gap: 12px; }
.gstep-num { background: linear-gradient(90deg,#2563eb 60%,#38bdf8 100%); color: #fff; font-weight: bold; border-radius: 50%; width: 28px; height: 28px; display: flex; align-items: center; justify-content: center; font-size: 1.1rem; margin-right: 8px; }
.gstep-title { font-weight: 600; color: #2563eb; }
.gstep-desc { color: #475569; font-size: 0.97rem; }
.dl-faq { max-width: 900px; margin: 32px auto 0; padding: 0 12px; }
.dl-meta-compare { max-width: 900px; margin: 32px auto 0; padding: 0 12px; }
.dl-requirements { max-width: 900px; margin: 32px auto 0; padding: 0 12px; }
.dl-features { max-width: 900px; margin: 32px auto 0; padding: 0 12px; }
.dl-logs { max-width: 900px; margin: 32px auto 0; padding: 0 12px; }
.components { max-width: 900px; margin: 32px auto 0; padding: 0 12px; }
.scenarios { max-width: 900px; margin: 32px auto 0; padding: 0 12px; }
.partners { max-width: 900px; margin: 32px auto 0; padding: 0 12px; }

/* SEO/Article page styles */
.article-hero { background: #f8fafc; padding: 32px 20px 0; text-align: center; }
.article-title { font-size: 1.8rem; color: #2563eb; font-weight: 700; margin-bottom: 16px; }
.kw-strip { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-bottom: 16px; }
.kw { background: #e0f2fe; color: #2563eb; border-radius: 10px; padding: 3px 12px; font-size: 0.97rem; }
.article-body { max-width: 820px; margin: 32px auto 0; padding: 0 20px; background: #fff; border-radius: 16px; box-shadow: 0 2px 12px rgba(37,99,235,0.04); }
.article-body h2 { color: #2563eb; font-size: 1.15rem; margin-top: 22px; }
.article-body ul { padding-left: 18px; color: #475569; }
.article-body p { color: #475569; }
.cmp-table { width: 100%; border-collapse: collapse; margin: 18px 0; background: #f8fafc; }
.cmp-table th, .cmp-table td { border: 1px solid #e2e8f0; padding: 7px 10px; text-align: center; }
.cmp-table th { background: #2563eb; color: #fff; }
.cmp-table td { color: #23272f; }
.cta-block { text-align: center; margin: 28px 0; }

/* Animation for download button */
@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }