:root {
  --primary: #0a9e48;
  --primary-dark: #087a38;
  --primary-light: #e8f7ef;
  --text: #1a1a1a;
  --text-body: #4a4a4a;
  --text-muted: #6b7280;
  --bg: #ffffff;
  --bg-light: #f8f9fa;
  --border: #e5e7eb;
  --radius: 10px;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.10);
  --container: 1200px;
  --font: "Microsoft YaHei", "微軟雅黑", "PingFang TC", "Heiti TC", "Noto Sans TC", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--text-body);
  line-height: 1.7;
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 { color: var(--text); line-height: 1.3; font-weight: 700; }

a { color: var(--primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--primary-dark); }

img { max-width: 100%; height: auto; display: block; }

.container { width: 92%; max-width: var(--container); margin: 0 auto; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { display: flex; align-items: center; gap: 12px; }
.logo img { height: 44px; width: auto; }
.logo-text { font-size: 1.1rem; font-weight: 700; color: var(--text); line-height: 1.2; }
.logo-text span { display: block; font-size: .7rem; color: var(--text-muted); font-weight: 500; }

.main-nav { display: flex; align-items: center; gap: 28px; }
.nav-links { display: flex; gap: 24px; list-style: none; }
.nav-links a { color: var(--text); font-weight: 500; font-size: .95rem; }
.nav-links a:hover, .nav-links a.active { color: var(--primary); }
.lang-switch { border: 1px solid var(--border); border-radius: 50px; padding: 6px 14px; font-size: .85rem; color: var(--text); font-weight: 500; }
.lang-switch:hover { border-color: var(--primary); color: var(--primary); }

.menu-toggle { display: none; background: none; border: none; cursor: pointer; padding: 6px; }
.menu-toggle span { display: block; width: 24px; height: 2px; background: var(--text); margin: 5px 0; transition: .3s; }

@media (max-width: 900px) {
  .menu-toggle { display: block; }
  .main-nav { 
    position: fixed; top: 72px; left: 0; right: 0; bottom: 0; 
    background: rgba(255, 255, 255, 0.98); flex-direction: column; align-items: flex-start; 
    padding: 30px 4%; gap: 0; transform: translateX(100%); transition: transform .3s ease; 
  }
  .main-nav.open { transform: translateX(0); }
  .nav-links { flex-direction: column; gap: 18px; }
  .nav-links a { font-size: 1.1rem; }
  .lang-switch { margin-top: 20px; }
}

/* Hero */
.hero { 
  background: linear-gradient(135deg, #0a9e48 0%, #0c7e3b 100%); 
  color: #fff; padding: 120px 0 100px; position: relative; overflow: hidden; 
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.15) 0%, transparent 30%),
              radial-gradient(circle at 80% 70%, rgba(255, 255, 255, 0.10) 0%, transparent 40%);
}
.hero-inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.hero-content h1 { font-size: 3rem; color: #fff; margin-bottom: 18px; }
.hero-content p { font-size: 1.2rem; opacity: .92; margin-bottom: 30px; max-width: 540px; }

.btn { 
  display: inline-flex; align-items: center; gap: 8px; 
  padding: 14px 32px; border-radius: 50px; font-weight: 600; font-size: 1rem; 
  transition: all .2s; border: 2px solid transparent; cursor: pointer; 
}
.btn-primary { background: #fff; color: var(--primary); }
.btn-primary:hover { background: #f0f0f0; color: var(--primary-dark); }
.btn-outline { background: transparent; color: #fff; border-color: rgba(255, 255, 255, 0.7); }
.btn-outline:hover { background: rgba(255, 255, 255, 0.1); color: #fff; }
.btn-dark { background: var(--primary); color: #fff; }
.btn-dark:hover { background: var(--primary-dark); }

.hero-visual { display: flex; justify-content: center; }
.hero-card { 
  background: rgba(255, 255, 255, 0.12); border: 1px solid rgba(255, 255, 255, 0.2); 
  border-radius: var(--radius); padding: 40px; backdrop-filter: blur(8px); 
}
.hero-card .stat { display: flex; align-items: center; gap: 16px; margin-bottom: 24px; }
.hero-card .stat:last-child { margin-bottom: 0; }
.hero-card .stat-num { font-size: 2rem; font-weight: 700; color: #fff; min-width: 60px; }
.hero-card .stat-label { font-size: .95rem; opacity: .9; }

@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-content h1 { font-size: 2.2rem; }
  .hero { padding: 80px 0 70px; }
  .hero-card { padding: 28px; }
  .hero-card .stat-num { font-size: 1.6rem; }
}

/* Section */
.section { padding: 80px 0; }
.section-alt { background: var(--bg-light); }
.section-title { text-align: center; margin-bottom: 50px; }
.section-title h2 { font-size: 2.2rem; margin-bottom: 12px; }
.section-title p { color: var(--text-muted); font-size: 1.1rem; max-width: 640px; margin: 0 auto; }

/* Cards */
.grid { display: grid; gap: 24px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card { background: var(--bg); border-radius: var(--radius); padding: 32px; box-shadow: var(--shadow); border: 1px solid var(--border); transition: transform .2s, box-shadow .2s; }
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.card-icon { 
  width: 56px; height: 56px; border-radius: 12px; background: var(--primary-light); color: var(--primary); 
  display: flex; align-items: center; justify-content: center; margin-bottom: 20px; font-size: 1.5rem; 
}
.card h3 { font-size: 1.2rem; margin-bottom: 10px; }
.card p { color: var(--text-muted); font-size: .95rem; }

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .section { padding: 60px 0; }
  .section-title h2 { font-size: 1.8rem; }
}

/* Cases */
.case-card { display: flex; flex-direction: column; overflow: hidden; border-radius: var(--radius); background: var(--bg); box-shadow: var(--shadow); border: 1px solid var(--border); transition: transform .2s, box-shadow .2s; }
.case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.case-thumb { 
  height: 200px; background: linear-gradient(135deg, #e0e0e0 0%, #f0f0f0 100%); 
  display: flex; align-items: center; justify-content: center; color: var(--text-muted); 
  font-weight: 600; position: relative; overflow: hidden; 
}
.case-thumb::before {
  content: "";
  position: absolute; inset: 0;
  background: repeating-linear-gradient(45deg, transparent, transparent 10px, rgba(255, 255, 255, 0.4) 10px, rgba(255, 255, 255, 0.4) 20px);
}
.case-thumb span { position: relative; z-index: 1; text-align: center; padding: 0 16px; }
.case-body { padding: 24px; }
.case-body h3 { font-size: 1.1rem; margin-bottom: 8px; }
.case-body .meta { font-size: .85rem; color: var(--primary); font-weight: 600; margin-bottom: 10px; }
.case-body p { font-size: .95rem; color: var(--text-muted); }

/* About page */
.about-hero { background: var(--bg-light); padding: 100px 0 60px; text-align: center; }
.about-hero h1 { font-size: 2.6rem; margin-bottom: 16px; }

.content-block { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; margin-bottom: 60px; }
.content-block.reverse { grid-template-columns: 1fr 1fr; direction: rtl; }
.content-block.reverse > * { direction: ltr; }
.content-block h2 { font-size: 1.8rem; margin-bottom: 16px; }
.content-block p { margin-bottom: 12px; color: var(--text-body); }
.content-block ul { padding-left: 20px; color: var(--text-body); }
.content-block li { margin-bottom: 8px; }

@media (max-width: 900px) {
  .content-block, .content-block.reverse { grid-template-columns: 1fr; }
}

/* Timeline */
.timeline { position: relative; padding-left: 30px; border-left: 2px solid var(--primary); }
.timeline-item { position: relative; padding-bottom: 30px; }
.timeline-item::before {
  content: ""; position: absolute; left: -39px; top: 4px; width: 14px; height: 14px; border-radius: 50%; background: var(--primary); border: 3px solid var(--bg);
}
.timeline-year { font-weight: 700; color: var(--primary); margin-bottom: 6px; }

/* Team */
.team-card { text-align: center; }
.team-avatar { width: 120px; height: 120px; border-radius: 50%; background: var(--primary-light); color: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 2rem; font-weight: 700; margin: 0 auto 18px; }
.team-card h3 { font-size: 1.2rem; margin-bottom: 4px; }
.team-card .role { color: var(--primary); font-weight: 600; font-size: .9rem; margin-bottom: 12px; }
.team-card p { font-size: .95rem; color: var(--text-muted); }

/* Organization chart */
.org-chart { display: flex; flex-direction: column; align-items: center; gap: 0; max-width: 1100px; margin: 0 auto; }
.org-row { display: flex; justify-content: center; gap: 20px; width: 100%; margin: 14px 0; flex-wrap: wrap; }
.org-box { background: var(--bg); border: 2px solid var(--primary); border-radius: var(--radius); padding: 22px 26px; text-align: center; min-width: 180px; box-shadow: var(--shadow); transition: transform .2s, box-shadow .2s; }
.org-box:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.org-box h3 { color: var(--primary); font-size: 1.05rem; margin-bottom: 6px; }
.org-box p { color: var(--text-muted); font-size: .88rem; margin: 0; line-height: 1.5; }
.org-box.gm { background: var(--primary); border-color: var(--primary); }
.org-box.gm h3, .org-box.gm p { color: #fff; }
.org-connector { width: 2px; height: 30px; background: var(--primary); position: relative; margin: 2px 0; }
.org-connector::after { content: ""; position: absolute; bottom: -6px; left: -4px; width: 0; height: 0; border-left: 5px solid transparent; border-right: 5px solid transparent; border-top: 6px solid var(--primary); }
.org-note { text-align: center; color: var(--text-muted); font-size: .95rem; max-width: 700px; margin: 40px auto 0; }

@media (max-width: 900px) {
  .org-row { gap: 12px; }
  .org-box { min-width: 140px; padding: 16px 14px; flex: 1 1 40%; max-width: 220px; }
  .org-box h3 { font-size: .95rem; }
  .org-box p { font-size: .82rem; }
}

/* Services */
.service-list { display: grid; gap: 24px; }
.service-item { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 30px; display: grid; grid-template-columns: 80px 1fr; gap: 24px; align-items: start; transition: box-shadow .2s; }
.service-item:hover { box-shadow: var(--shadow); }
.service-num { width: 56px; height: 56px; border-radius: 50%; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 1.2rem; }
.service-item h3 { margin-bottom: 8px; }
.service-item p { color: var(--text-muted); font-size: .95rem; margin-bottom: 12px; }

/* Detail page */
.detail-hero { background: var(--bg-light); padding: 100px 0 60px; text-align: center; }
.detail-hero .meta { color: var(--primary); font-weight: 600; margin-bottom: 10px; }
.detail-hero .subtitle { color: var(--text-muted); font-size: 1.1rem; max-width: 700px; margin: 12px auto 0; }
.detail-content { max-width: 800px; margin: 0 auto; padding: 60px 0 20px; }
.detail-content h2 { margin: 30px 0 16px; font-size: 1.5rem; }
.detail-content p { margin-bottom: 14px; }
.detail-content ul { padding-left: 22px; margin-bottom: 16px; }
.detail-content li { margin-bottom: 8px; }

/* Case gallery */
.case-gallery { display: flex; flex-direction: column; gap: 48px; }
.gallery-phase h3 { font-size: 1.3rem; margin-bottom: 20px; padding-left: 14px; border-left: 4px solid var(--primary); }
.gallery-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.gallery-figure { aspect-ratio: 4 / 3; overflow: hidden; border-radius: var(--radius); background: var(--bg-light); border: 1px solid var(--border); }
.gallery-figure a { display: block; width: 100%; height: 100%; }
.gallery-figure img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s; }
.gallery-figure:hover img { transform: scale(1.05); }

@media (max-width: 1024px) {
  .gallery-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 640px) {
  .gallery-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .gallery-phase h3 { font-size: 1.15rem; }
}

/* Clickable case cards */
.case-card-link { display: flex; flex-direction: column; height: 100%; color: inherit; }
.case-card-link:hover { color: inherit; }
.case-card-link .case-body { flex: 1; display: flex; flex-direction: column; }
.case-card-link .case-action { margin-top: auto; padding-top: 14px; color: var(--primary); font-weight: 600; font-size: .95rem; display: inline-flex; align-items: center; gap: 6px; }
.case-card-link:hover .case-action { color: var(--primary-dark); }
.case-card-link:hover .case-thumb { background: linear-gradient(135deg, #d5d5d5 0%, #e5e5e5 100%); }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: start; }
.contact-info h3 { margin-bottom: 20px; font-size: 1.4rem; }
.contact-info-item { display: flex; gap: 14px; margin-bottom: 20px; }
.contact-info-icon { width: 44px; height: 44px; border-radius: 50%; background: var(--primary-light); color: var(--primary); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.contact-info-item strong { display: block; color: var(--text); margin-bottom: 2px; }

.contact-form { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; box-shadow: var(--shadow); }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 6px; font-weight: 500; color: var(--text); }
.form-group input, .form-group textarea, .form-group select { width: 100%; padding: 12px 16px; border: 1px solid var(--border); border-radius: 8px; font-family: inherit; font-size: 1rem; }
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { outline: none; border-color: var(--primary); }

@media (max-width: 900px) {
  .contact-grid { grid-template-columns: 1fr; }
}

/* Footer */
.site-footer { background: #1a1a1a; color: #aaa; padding: 60px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand .logo-text { color: #fff; margin-bottom: 12px; }
.footer-brand p { font-size: .95rem; line-height: 1.7; }
.footer-links h4 { color: #fff; margin-bottom: 16px; font-size: 1rem; }
.footer-links ul { list-style: none; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { color: #aaa; }
.footer-links a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid #333; padding-top: 24px; text-align: center; font-size: .85rem; color: #777; }

@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
}

/* Utilities */
.text-center { text-align: center; }
.mt-20 { margin-top: 20px; }
.mt-40 { margin-top: 40px; }
.mb-40 { margin-bottom: 40px; }

/* enquiry form status (Formspree) */
.form-status{margin-top:14px;padding:10px 14px;border-radius:6px;font-size:.95rem;display:none}
.form-status.success{display:block;background:#eafaf0;color:#0a9e48;border:1px solid #b7e3c8}
.form-status.error{display:block;background:#fdecec;color:#c0392b;border:1px solid #f3c2c2}