:root {
  --brand: #0f3c8c;
  --brand-2: #173e7a;
  --text: #1a1a1a;
  --muted: #666;
  --bg: #ffffff;
  --surface: #f5f7fb;
  --accent: #ff7a00;
  --bgpr: #000f6d;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", Arial, sans-serif;
}

.container { width: 100%; max-width: 1100px; margin: 0 auto; padding: 0 16px; }

.site-header { position: sticky; top: 0; z-index: 1000; background: var(--bg); border-bottom: 1px solid #e6eaf2; }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 80px; }
.header-inner.desktop { display: none; }
.header-inner.mobile { display: flex; }
.site-header .logo img { width: 80px; }

.lang-switch { display: inline-flex; gap: 6px; margin-left: 12px; }
.lang-btn { height: 32px; padding: 0 10px; border: 1px solid #e6eaf2; border-radius: 8px; background: #fff; }
.lang-btn[aria-pressed="true"] { background: var(--surface); color: var(--brand); }

.menu-toggle { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; background: transparent; border: 1px solid #e6eaf2; border-radius: 8px; }
.menu-icon { display: block; width: 20px; height: 2px; background: var(--text); position: relative; }
.menu-icon::before, .menu-icon::after { content: ""; position: absolute; left: 0; width: 20px; height: 2px; background: var(--text); }
.menu-icon::before { top: -6px; }
.menu-icon::after { top: 6px; }

.primary-nav { position: fixed; inset: 64px 0 0 0; background: var(--bg); transform: translateY(-100%); transition: transform .25s ease; border-top: 1px solid #e6eaf2; z-index: 900; }
.primary-nav ul { list-style: none; margin: 0; padding: 16px; display: grid; gap: 8px; }
.primary-nav a { display: block; padding: 12px 10px; border-radius: 8px; text-decoration: none; color: var(--text); }
.primary-nav a:hover { background: var(--surface); }
.primary-nav[data-open="true"] { transform: translateY(0); }

.hero { background: linear-gradient(rgba(0,0,0,0.35), rgba(0,0,0,0.35)), url('../img/home-hero.jpg'); background-size: cover; background-position: center; background-repeat: no-repeat; padding: 56px 0; }
.hero h1 { margin: 0 0 12px 0; font-size: 28px; line-height: 1.25; color: #fff; }
.hero p { margin: 0 0 20px 0; color: #fff; }
.hero-actions { display: flex; gap: 12px; }

.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 40px; padding: 10px 20px; border-radius: 8px; text-decoration: none; font-weight: 600; }
.btn.primary { background: var(--brand); color: #fff; }
.btn.secondary { background: var(--surface); color: var(--brand); }

.features { padding: 40px 0; }
.features h2 { margin: 0 0 16px 0; font-size: 22px; }
.features-grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
.feature-card { padding: 16px; border: 1px solid #e6eaf2; border-radius: 12px; background: #fff; }
.feature-card h3 { margin: 0 0 8px 0; font-size: 18px; color: var(--brand); }

.cases-section { padding: 40px 0; }
.cases-section h2 { margin: 0 0 16px 0; font-size: 22px; }
.cases-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.case-card { border: 1px solid #e6eaf2; border-radius: 12px; background: #fff; overflow: hidden; display: grid; grid-template-rows: 1fr auto; aspect-ratio: 3 / 4; }
.case-card img { width: 100%; height: 100%; object-fit: cover; display: block; }
.case-name { padding: 5px 5px 8px 5px; text-align: center; font-size: 14px; color: var(--text); border-top: 1px solid #e6eaf2; line-height: 10px; }

.infocards { padding: 40px 0; }
.infocards h2 { margin: 0 0 16px 0; font-size: 22px; }
.infocards-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.info-about, .info-service { padding: 16px; border: 1px solid #e6eaf2; border-radius: 12px; background: #fff; }
.info-about h2, .info-service h2 { margin: 0 0 8px 0; font-size: 18px; color: var(--bgpr); background-color: #f5f7fb; padding: 5px; }

.cta { padding: 40px 0; background: var(--surface); }
.cta h2 { margin: 0 0 10px 0; }
.cta p { margin: 0 0 16px 0; color: var(--muted); }

.page-hero { background: linear-gradient(180deg, #f6f9ff, #ffffff); padding: 40px 0; }
.page-hero h1 { margin: 0 0 8px 0; color: var(--brand-2); }
.page-hero p { margin: 0; color: var(--muted); }

.contact-section { padding: 32px 0; }
.contact-form { display: grid; gap: 16px; }
.form-grid { display: grid; gap: 16px; grid-template-columns: 1fr; }
.form-group { display: grid; gap: 6px; }
.input, .select, .textarea { width: 100%; padding: 10px 12px; border: 1px solid #e6eaf2; border-radius: 8px; font-size: 14px; }
.options-grid { display: grid; gap: 8px; grid-template-columns: 1fr; }
.option { display: inline-flex; align-items: center; gap: 8px; }
.option input { width: 16px; height: 16px; }
.form-consent { display: flex; align-items: center; gap: 8px; }
.checkbox { display: inline-flex; align-items: center; gap: 8px; }
.error { color: #b00020; font-size: 12px; min-height: 16px; }
.hint { color: var(--muted); font-size: 12px; }
.field { display: grid; gap: 6px; }
.form-group--row { display: grid; gap: 12px; }
.form-group--row.two { grid-template-columns: 1fr; }
.form-actions { display: flex; gap: 12px; }
.success-banner { background: #e8f5e9; color: #1b5e20; border: 1px solid #c8e6c9; border-radius: 8px; padding: 12px; }
.sending-banner { background: #e3f2fd; color: #0d47a1; border: 1px solid #90caf9; border-radius: 8px; padding: 12px; }

.site-footer { padding: 24px 0; border-top: 1px solid #e6eaf2; background: #fff; }
.footer-inner { display: grid; gap: 12px; }
.footer-top { display: grid; gap: 16px; align-items: center; }
.footer-brand .tagline { color: var(--muted); }
.footer-contact ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; color: var(--muted); }
.footer-contact i { display: inline-block; margin-right: 6px; color: var(--brand); }
.footer-menu { display: flex; gap: 12px; flex-wrap: wrap; flex-direction: column; align-content: flex-end; }
.footer-menu a { color: var(--text); text-decoration: none; }
.footer-bottom { margin-top: 8px; padding-top: 12px; border-top: 1px solid #e6eaf2; }
.footer-links { display: flex; gap: 12px; flex-wrap: wrap; }
.footer-links a { color: var(--text); text-decoration: none; }
.footer-copy { color: var(--muted); text-align: center;}
.site-footer .logo img { width: 200px; }

.whatsapp-live { position: fixed; right: 20px; bottom: 20px; width: auto; height: 100px; border-radius: 50%; box-shadow: 0 6px 16px rgba(0,0,0,0.15);display: inline-flex; align-items: center; justify-content: center; z-index: 2000; }
.whatsapp-live img { width: auto; height: 100%; display: block; }
.whatsapp-live:hover { transform: scale(1.05); }

@media (min-width: 768px) {
  .menu-toggle { display: none; }
  .primary-nav { position: static; inset: auto; transform: none; border: none; }
  .primary-nav ul { display: flex; gap: 8px; padding: 0; }
  .primary-nav a { padding: 10px 12px; }
  .header-inner.desktop { display: flex; }
  .header-inner.mobile { display: none; }
  .header-inner { justify-content: flex-start; }
  .primary-nav { margin-left: auto; }
  .lang-switch { order: 0; }
.hero { padding: 240px 0; }
  .hero h1 { font-size: 40px; }
  .features-grid { grid-template-columns: repeat(3, 1fr); }
  .cases-grid { grid-template-columns: repeat(3, 1fr); }
  .form-group--row.two { grid-template-columns: 1fr 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .options-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-top { grid-template-columns: 1.2fr 1fr 1fr; align-items: center; }
  .footer-menu { justify-content: flex-end; }
}

@media (min-width: 1024px) {
  .features-grid { grid-template-columns: repeat(5, 1fr); }
  .cases .features-grid { grid-template-columns: repeat(4, 1fr); }
  .cases-grid { grid-template-columns: repeat(5, 1fr); }
}

@media (max-width: 768px) {
  .logo,
  .menu-toggle,
  .lang-switch {
    position: relative;
    z-index: 1001;
  }
  .logo { text-align: center;}
  .site-header .logo img { width: 50px; }
  .primary-nav a {
      color: var(--bgpr);
  }
  .infocards-grid {
    grid-template-columns: 1fr;
  }
  .footer-menu {
    align-content: flex-start;
  }
}
/*
.cases-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; }
.case-card img { width: 100%; height: auto; aspect-ratio: 4 / 3; object-fit: cover; }
.case-name { margin-top: 6px; font-weight: 600; }
*/