/* 公开页面通用布局；科技主题由 site-theme.css 补充。 */
.site-page {
    --home-ink: #15243b;
    --home-muted: #607087;
    --home-blue: #245bd7;
    --home-line: #e2e8f1;
    color: var(--home-ink);
    background: #f7f9fc;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
}
.site-page .container { max-width: 1160px; padding: 0 24px; }
.site-page section[id] { scroll-margin-top: 100px; }
.site-page a:focus-visible, .site-page button:focus-visible {
    outline: 3px solid #83adff;
    outline-offset: 4px;
}
.site-page .header {
    position: sticky;
    background: rgba(255, 255, 255, .96);
    color: var(--home-ink);
    border-bottom: 1px solid var(--home-line);
    padding: 16px 0;
    box-shadow: none;
    backdrop-filter: blur(16px);
}
.site-page .header.is-scrolled { box-shadow: 0 6px 24px rgba(21, 36, 59, .06); }
.site-page .nav-brand { font-size: 19px; gap: 10px; }
.site-page .nav-brand i { color: var(--home-blue); }
.site-page .nav-menu { gap: 20px; }
.site-page .nav-menu a { color: #44536a; font-size: 14px; white-space: nowrap; }
.site-page .nav-menu a:hover:not(.btn-download) { color: var(--home-blue); opacity: 1; }
.site-page .nav-menu .btn-download { background: var(--home-blue); color: white; border-radius: 10px; padding: 10px 16px; }
.site-page .hero {
    padding: 64px 0 52px;
    color: var(--home-ink);
    background: radial-gradient(ellipse at 50% 0%, #e8efff, transparent 70%), #f7f9fc;
}
.site-page .hero-content { max-width: 800px; }
.site-page .section-tag { background: #eaf0ff; color: var(--home-blue); font-size: 13px; padding: 5px 12px; margin-bottom: 16px; }
.site-page .hero h1 { font-size: clamp(32px, 4.5vw, 50px); letter-spacing: -1px; line-height: 1.3; margin-bottom: 16px; }
.site-page .hero-subtitle { font-size: 22px; opacity: 1; color: #344b6a; margin-bottom: 14px; }
.site-page .hero-description { font-size: 16px; line-height: 1.9; color: var(--home-muted); opacity: 1; max-width: 640px; margin: 0 auto 26px; }
.site-page .btn-primary, .site-page .btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    border-radius: 10px;
    padding: 12px 22px;
    font-size: 15px;
    font-weight: 600;
    line-height: 1.5;
    border: 1px solid transparent;
    transition: background .2s, border-color .2s, transform .2s;
}
.site-page .btn-primary { background: var(--home-blue); color: #fff; }
.site-page .btn-primary:hover { background: #1949b5; transform: translateY(-1px); }
.site-page .btn-secondary { background: white; border-color: #d4dfef; color: #354967; }
.site-page .btn-secondary:hover { background: #eff4ff; border-color: #a9bfeb; }
.site-page .hero-capabilities { display: flex; justify-content: center; flex-wrap: wrap; gap: 22px; margin: 24px 0 10px; color: #526783; font-size: 14px; }
.site-page .hero-capabilities i { color: var(--home-blue); margin-right: 4px; }
.site-page .hero-note { color: var(--home-muted); font-size: 13px; }
.site-page .download { background: #f7f9fc; padding: 0 0 32px; text-align: left; }
.site-page .download-content { display: grid; grid-template-columns: minmax(0, 1fr) 290px; gap: 40px; padding: 36px; background: white; border: 1px solid var(--home-line); border-radius: 22px; box-shadow: 0 12px 36px rgba(37, 65, 107, .05); }
.site-page .download h2 { font-size: 28px; color: var(--home-ink); margin-bottom: 12px; }
.site-page .download-description { font-size: 15px; color: var(--home-muted); margin-bottom: 22px; }
.site-page .download-buttons { justify-content: flex-start; gap: 12px; margin-bottom: 12px; }
.site-page .download-runtime { color: var(--home-muted); font-size: 12px; }
.site-page .download-links { display: flex; flex-wrap: wrap; gap: 20px; margin-top: 22px; }
.site-page .download-links a { font-size: 13px; color: var(--home-blue); text-decoration: none; }
.site-page .download-links a:hover { text-decoration: underline; }
.site-page .download-links i { font-size: 10px; margin-left: 5px; }
.site-page .download-info { max-width: none; width: 100%; margin: 0; padding: 22px 24px; background: #f4f7fc; border-radius: 14px; box-shadow: none; align-self: center; }
.site-page .download-info p { margin: 8px 0; font-size: 13px; color: #536680; }
.site-page .download-info p:first-child { color: var(--home-blue); font-size: 24px; font-weight: 700; margin-bottom: 12px; }
.site-page .download-info p:first-child strong { display: block; color: var(--home-muted); font-size: 12px; font-weight: 500; }
.site-page .video-teaching { padding: 0 0 56px; background: #f7f9fc; }
.site-page .video-teaching-card { grid-template-columns: minmax(0, 320px) minmax(0, 1fr); gap: 32px; padding: 24px; border: 1px solid var(--home-line); border-radius: 20px; box-shadow: none; }
.site-page .video-teaching-card:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(37, 65, 107, .07); }
.site-page .video-teaching-image img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.site-page .video-play-badge { width: 52px; height: 52px; font-size: 18px; background: var(--home-blue); }
.site-page .video-teaching-copy h2 { color: var(--home-ink); font-size: 25px; margin-bottom: 10px; }
.site-page .video-teaching-copy p { color: var(--home-muted); font-size: 15px; }
.site-page .video-teaching-link { color: var(--home-blue); font-size: 14px; }
.site-page .smart-workflow, .site-page .web-platform, .site-page .features, .site-page .pricing, .site-page .contact { padding: 64px 0; }
.site-page .smart-workflow, .site-page .features, .site-page .contact { background: #fff; }
.site-page .web-platform, .site-page .pricing { background: #f7f9fc; }
.site-page .workflow-highlight { padding: 0; border: none; border-radius: 0; box-shadow: none; gap: 56px; }
.site-page .workflow-copy h2 { color: var(--home-ink); font-size: 32px; line-height: 1.4; }
.site-page .workflow-lead { color: var(--home-muted); font-size: 15px; }
.site-page .workflow-points { gap: 16px; }
.site-page .workflow-points div { background: #f7f9fc; border-radius: 12px; }
.site-page .workflow-points i { color: var(--home-blue); }
.site-page .workflow-panel { background: #f1f5fc; color: var(--home-ink); border: 1px solid var(--home-line); border-radius: 18px; padding: 24px; }
.site-page .workflow-step { border: 1px solid var(--home-line); box-shadow: none; }
.site-page .workflow-step.active { background: #e7efff; border-color: #bed0f3; }
.site-page .workflow-step span { background: #eaf0ff; color: var(--home-blue); }
.site-page .workflow-result { background: #e7f4ee; color: #26745a; }
.site-page .workflow-result i { color: #26745a; }
.site-page .web-platform h2, .site-page .features h2, .site-page .pricing h2, .site-page .contact h2 { font-size: 32px; color: var(--home-ink); margin-bottom: 16px; line-height: 1.4; }
.site-page .features > .container, .site-page .pricing > .container, .site-page .contact > .container { text-align: center; }
.site-page .web-platform-intro, .site-page .section-intro { color: var(--home-muted); font-size: 15px; }
.site-page .features-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 32px; }
.site-page .feature-card { padding: 24px; border: 1px solid var(--home-line); border-radius: 14px; box-shadow: none; text-align: left; }
.site-page .feature-card i { font-size: 23px; color: var(--home-blue); margin-bottom: 14px; }
.site-page .feature-card h3 { font-size: 17px; margin-bottom: 8px; color: var(--home-ink); }
.site-page .feature-card p { font-size: 14px; line-height: 1.8; color: var(--home-muted); }
.site-page .pricing-cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; align-items: stretch; margin-top: 32px; }
.site-page .pricing-card { display: flex; flex-direction: column; align-items: stretch; padding: 28px; gap: 0; border: 1px solid var(--home-line); border-radius: 18px; box-shadow: none; }
.site-page .pricing-card.featured { border-color: #b9cdf4; box-shadow: none; }
.site-page .pricing-card h3 { font-size: 19px; margin-bottom: 20px; }
.site-page .price { color: var(--home-blue); font-size: 30px; line-height: 1.4; }
.site-page .price span { color: var(--home-muted); margin-top: 6px; font-size: 13px; font-weight: 400; }
.site-page .pricing-card:last-child .price { font-size: 19px; min-height: 68px; display: flex; align-items: center; }
.site-page .pricing-card ul { display: block; margin: 24px 0 28px; }
.site-page .pricing-card li { font-size: 14px; padding: 6px 0; color: #4f6179; }
.site-page .pricing-card li i { color: var(--home-blue); font-size: 12px; }
.site-page .pricing-card .btn-primary { margin-top: auto; width: 100%; }
.site-page .contact-content { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; margin-top: 32px; text-align: left; }
.site-page .contact-info, .site-page .contact-form { padding: 28px; background: #f7f9fc; border: 1px solid var(--home-line); border-radius: 16px; }
.site-page .contact-info h3 { color: var(--home-ink); font-size: 20px; }
.site-page .contact-info p { color: var(--home-muted); font-size: 14px; }
.site-page .contact-info i { color: var(--home-blue); }
.site-page .contact-info img { width: 154px; max-width: 100%; height: auto; border-radius: 8px; }
.site-page .contact-form input, .site-page .contact-form textarea { padding: 12px 14px; font: inherit; font-size: 14px; border: 1px solid #d9e1ec; border-radius: 8px; background: white; min-width: 0; }
.site-page .contact-form input:focus, .site-page .contact-form textarea:focus { outline: 2px solid #c4d5f8; border-color: #7d9edb; }
.site-page .contact-form button { width: 100%; }
.site-page .footer { background: #17273e; color: #b6c4d7; padding: 32px 0; }
.site-page .footer p { font-size: 12px; margin: 6px 0; }
.site-page .footer a { color: #d7e3f5; text-decoration: none; }
.site-page .floating-support { position: fixed; right: 12px; bottom: 24px; z-index: 900; width: 148px; padding: 11px; border: 1px solid #c7deef; border-top: 3px solid #39a2d0; border-radius: 14px; background: #fff; color: var(--home-ink); text-align: center; box-shadow: 0 6px 24px rgba(21, 36, 59, .1); }
.site-page .floating-support a { display: block; }
.site-page .floating-support img { display: block; width: 124px; height: auto; max-width: 100%; margin: 0 auto; }
.site-page .floating-support p { margin: 10px 0 0; font-size: 12px; line-height: 1.6; }
@media (max-width: 1280px) {
    .site-page .floating-support { position: static; width: 190px; padding: 14px; margin: 24px auto; }
    .site-page .floating-support img { width: 160px; }
}
@media (max-width: 1100px) and (min-width: 769px) {
    .site-page .nav .container { flex-wrap: wrap; justify-content: center; gap: 14px; }
    .site-page .nav-menu { width: 100%; margin-left: 0; justify-content: center; gap: 20px; }
    .site-page section[id] { scroll-margin-top: 132px; }
    .site-page .download-content { grid-template-columns: minmax(0, 1fr) 250px; gap: 24px; padding: 28px; }
}
@media (max-width: 768px) {
    .site-page .container { padding: 0 20px; }
    .site-page .header { padding: 14px 0; }
    .site-page .nav-brand { padding-left: 0; font-size: 17px; }
    .site-page .mobile-menu-btn { left: auto; right: 20px; color: var(--home-blue); background: #edf2fc; border: 0; border-radius: 8px; padding: 6px 10px; font-size: 20px; }
    .site-page .nav-menu { top: calc(100% + 14px); background: #fff; border-bottom: 1px solid var(--home-line); box-shadow: 0 8px 16px rgba(21, 36, 59, .08); }
    .site-page .nav-menu li { border-color: var(--home-line); text-align: left; padding: 10px 20px; }
    .site-page .hero { padding: 40px 0 36px; }
    .site-page .hero h1 { letter-spacing: -.5px; }
    .site-page .hero-subtitle { font-size: 18px; }
    .site-page .hero-description { font-size: 14px; }
    .site-page .hero-buttons { gap: 10px; }
    .site-page .hero-buttons a { padding: 12px 18px; font-size: 14px; }
    .site-page .hero-capabilities { gap: 12px; font-size: 12px; }
    .site-page .download-content { grid-template-columns: 1fr; gap: 24px; padding: 24px; }
    .site-page .download h2 { font-size: 24px; }
    .site-page .download-buttons { flex-direction: column; align-items: stretch; }
    .site-page .download-info { padding: 18px 20px; }
    .site-page .download-links { gap: 14px; }
    .site-page .video-teaching-card { grid-template-columns: 1fr; padding: 20px; gap: 20px; }
    .site-page .video-teaching-copy h2 { font-size: 23px; }
    .site-page .smart-workflow, .site-page .web-platform, .site-page .features, .site-page .pricing, .site-page .contact { padding: 44px 0; }
    .site-page .workflow-highlight { grid-template-columns: 1fr; gap: 28px; }
    .site-page .workflow-copy h2, .site-page .web-platform h2, .site-page .features h2, .site-page .pricing h2, .site-page .contact h2 { font-size: 26px; }
    .site-page .features-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
    .site-page .feature-card { padding: 20px; }
    .site-page .pricing-cards { grid-template-columns: 1fr; }
    .site-page .pricing-card { text-align: left; padding: 24px; }
    .site-page .contact-content { grid-template-columns: 1fr; gap: 20px; }
    .site-page .contact-info, .site-page .contact-form { padding: 24px; }
    .site-page .footer { padding-bottom: 72px; }
}
@media (max-width: 480px) {
    .site-page .features-grid { grid-template-columns: 1fr; }
    .site-page .workflow-points span { grid-column: 2; }
}
@media (prefers-reduced-motion: reduce) {
    .site-page *, .site-page *::before, .site-page *::after { animation: none !important; transition: none !important; }
}