/* Minimal clean style for a simple, bold homepage */
:root {
  --brand-color: #2b5cff;
  --text-color: #0f172a;
  --muted-text: #475569;
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --border: #e2e8f0;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text-color); font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif; line-height: 1.6; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }

.container { max-width: 1100px; margin: 0 auto; padding: 0 16px; }

/* Global: disable text selection and caret to prevent blinking cursor across pages */
html, body, *, *::before, *::after { -webkit-tap-highlight-color: transparent; }
body { user-select: none; -webkit-user-select: none; -ms-user-select: none; -moz-user-select: none; caret-color: transparent; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; background: var(--bg); border-bottom: 1px solid var(--border); }
.navbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand-logo { width: 40px; height: 40px; object-fit: contain; }
.brand-name { font-weight: 700; letter-spacing: 0.5px; }
.nav-links { display: flex; align-items: center; gap: 18px; }
.nav-links a { opacity: .9; }
.nav-links a:hover { color: var(--brand-color); }
.nav-toggle { display: none; width: 40px; height: 40px; border: 1px solid var(--border); background: #fff; border-radius: 8px; align-items: center; justify-content: center; cursor: pointer; }
.nav-toggle .bar { display: block; width: 18px; height: 2px; background: var(--text-color); margin: 2px 0; }
.header-cta { margin-left: 8px; }

/* Hero */
.hero { padding: 72px 0 40px; background: linear-gradient(180deg, #eef4ff 0%, #ffffff 100%); }
.hero h1 { margin: 0 0 16px; font-size: 44px; letter-spacing: .3px; }
.hero p { margin: 0 0 18px; color: var(--muted-text); font-size: 18px; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; }
.actions.center { justify-content: center; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); background: var(--bg); }
.site-footer .container { padding: 20px 16px; }
.footer-meta { color: var(--muted-text); font-size: 14px; margin-top: 10px; }
.footer-meta a { color: var(--muted-text); }
.footer-meta a:hover { color: var(--brand-color); }

/* Buttons */
.btn { display: inline-block; padding: 10px 16px; border-radius: 10px; border: 1px solid var(--border); color: var(--text-color); background: #fff; }
.btn.primary { background: var(--brand-color); color: #fff; border-color: var(--brand-color); }
.btn.outline { background: transparent; color: var(--brand-color); border-color: var(--brand-color); }
.btn.light { background: #ffffff; color: var(--brand-color); border-color: #ffffff; }
.btn.pill { border-radius: 999px; padding: 10px 18px; }
.btn:hover { filter: brightness(0.98); }

/* Interactive controls: disable text selection and tap highlight to avoid caret flicker */
.btn, .carousel-arrow, .carousel-dots button, .nav-links a, .header-cta {
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

/* Showcase media */
.showcase { padding: 28px 0 16px; }
.media-card { border-radius: 14px; overflow: hidden; border: 1px solid var(--border); background: var(--bg-alt); }
.media-card img { width: 100%; display: block; }

/* Carousel */
.carousel { position: relative; }
.carousel-viewport { position: relative; border: 1px solid var(--border); border-radius: 14px; overflow: hidden; background: var(--bg-alt); }
.carousel-track { display: flex; transition: transform 400ms ease; will-change: transform; }
/* default mobile: 1 per view */
.carousel-slide { min-width: 100%; user-select: none; }
.carousel[data-per-view="3"] .carousel-slide { min-width: 33.3333%; }
.carousel[data-per-view="2"] .carousel-slide { min-width: 50%; }
.carousel-slide img { width: 100%; display: block; }
.carousel-arrow { position: absolute; top: 50%; transform: translateY(-50%); width: 36px; height: 36px; border-radius: 999px; border: 1px solid var(--border); background: #fff; cursor: pointer; display: grid; place-items: center; z-index: 2; }
.carousel-arrow.prev { left: -48px; }
.carousel-arrow.next { right: -48px; }
.carousel-dots { position: static; display: flex; justify-content: center; gap: 8px; margin-top: 10px; }
.carousel-dots button { width: 8px; height: 8px; border-radius: 50%; border: 1px solid var(--border); background: rgba(255,255,255,.8); padding: 0; cursor: pointer; }
.carousel-dots button[aria-selected="true"] { background: var(--brand-color); border-color: var(--brand-color); }

/* Info section */
.info { padding: 48px 0; background: linear-gradient(180deg, #e0eaff 0%, #cfe1ff 100%); }
.center { text-align: center; }
.info h2 { margin: 0 0 10px; font-size: 32px; }
.info p { margin: 0 0 16px; color: var(--text-color); }

/* Responsive */
@media (max-width: 720px) {
  .nav-toggle { display: inline-flex; }
  /* 仅隐藏页眉导航，页脚导航保持可见 */
  .site-header .nav { display: none; }
  body.nav-open .site-header .nav { display: block; }
  .nav-links { flex-direction: column; align-items: flex-start; padding: 10px 0; }
  .hero { padding: 56px 0 32px; }
  .hero h1 { font-size: 34px; }
}

@media (min-width: 721px) and (max-width: 1024px) {
  /* tablet: 2 per view */
  .carousel .carousel-slide { min-width: 50%; }
}

@media (min-width: 1025px) {
  /* desktop: 3 per view */
  .carousel .carousel-slide { min-width: 33.3333%; }
}