:root {
  /* 企業識別色（Pantone 色號為近似對照，印刷前請以 Pantone 色票確認） */
  --sky: #0077c8;          /* 天青 PANTONE 3005 C：主色，按鈕、連結 */
  --sky-dark: #00609f;     /* 天青深色：滑鼠移上、深色背景 */
  --grass: #43b02a;        /* 草綠 PANTONE 361 C：漸層、裝飾 */
  --grass-dark: #007a33;   /* 深綠 PANTONE 356 C：綠色文字 */

  --primary: var(--sky);
  --primary-dark: var(--sky-dark);
  --primary-light: #e6f2fa;
  --accent-light: #ecf7e8;
  --brand-gradient: linear-gradient(120deg, var(--sky-dark) 0%, var(--sky) 45%, var(--grass) 100%);

  --text: #1d2a33;
  --muted: #586773;
  --line: #e1e8ee;
  --bg: #ffffff;
  --bg-alt: #f5f8fa;
  --radius: 12px;
  --max: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
  font-size: 16px;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); }
a:hover { color: var(--primary-dark); }

.container { max-width: var(--max); margin: 0 auto; padding: 0 20px; }

/* 頁首 */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(255, 255, 255, .96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(6px);
}
.site-header .container {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; min-height: 68px; flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); }
.brand img { width: 40px; height: 40px; }
.brand-name { font-weight: 700; font-size: 1.05rem; line-height: 1.2; }
.brand-name small { display: block; font-weight: 400; font-size: .78rem; color: var(--muted); }
.nav { display: flex; gap: 4px; flex-wrap: wrap; }
.nav a {
  text-decoration: none; color: var(--text);
  padding: 8px 14px; border-radius: 999px; font-size: .95rem;
}
.nav a:hover { background: var(--primary-light); color: var(--primary-dark); }
.nav a[aria-current="page"] { background: var(--primary); color: #fff; }
.nav a.lang {
  border: 1px solid var(--line); font-weight: 600; font-size: .85rem;
  margin-left: 4px; letter-spacing: .02em;
}
.nav a.lang:hover { border-color: var(--primary); }

/* 主視覺 */
.hero {
  background:
    radial-gradient(circle at 85% 20%, rgba(255,255,255,.14) 0, transparent 40%),
    radial-gradient(circle at 10% 90%, rgba(255,255,255,.10) 0, transparent 35%),
    var(--brand-gradient);
  color: #fff;
  padding: 88px 0 96px;
}
.hero.small { padding: 56px 0 60px; }

/* 主視覺照片：左側天青遮罩讓白字清楚，右側透出照片並帶一點草綠 */
.hero.photo {
  --hero-overlay: linear-gradient(90deg,
    rgba(0, 96, 159, .92) 0%,
    rgba(0, 119, 200, .78) 38%,
    rgba(0, 119, 200, .25) 68%,
    rgba(67, 176, 42, .18) 100%);
  background-size: cover;
  background-position: right center;
  background-repeat: no-repeat;
  padding: 120px 0 128px;
  text-shadow: 0 1px 12px rgba(0, 40, 70, .35);
}
.hero.photo.small { padding: 96px 0 100px; }
.hero.photo .container > * { max-width: 560px; }
.hero-home    { background-image: var(--hero-overlay), url("../images/hero-home.jpg"); }
.hero-service { background-image: var(--hero-overlay), url("../images/hero-service.jpg"); }
.hero-contact { background-image: var(--hero-overlay), url("../images/hero-contact.jpg"); }

/* 聯絡頁人物頭部在照片上方：加高區塊並把顯示範圍往上移，讓頭部完整 */
.hero.photo.hero-contact {
  min-height: 26vw;
  display: flex;
  align-items: center;
  background-position: right 28%;
}
.hero.photo.hero-contact .container { width: 100%; }

@media (max-width: 768px) {
  .hero.photo {
    --hero-overlay: linear-gradient(90deg, rgba(0, 96, 159, .9) 0%, rgba(0, 119, 200, .7) 60%, rgba(67, 176, 42, .45) 100%);
    padding: 72px 0 80px;
  }
  .hero.photo.small { padding: 60px 0 64px; }
  .hero-home    { background-image: var(--hero-overlay), url("../images/hero-home-sm.jpg"); }
  .hero-service { background-image: var(--hero-overlay), url("../images/hero-service-sm.jpg"); }
  .hero-contact { background-image: var(--hero-overlay), url("../images/hero-contact-sm.jpg"); }
}
.hero h1 { font-size: clamp(1.9rem, 4.5vw, 2.8rem); margin: 0 0 12px; line-height: 1.3; }
.hero p { font-size: 1.15rem; margin: 0 0 4px; opacity: .92; }
.hero .actions { margin-top: 28px; display: flex; gap: 12px; flex-wrap: wrap; }

.btn {
  display: inline-block; text-decoration: none; font-weight: 600;
  padding: 12px 24px; border-radius: 999px; border: 2px solid transparent;
}
.btn-light { background: #fff; color: var(--primary-dark); }
.btn-light:hover { background: var(--primary-light); color: var(--primary-dark); }
.btn-outline { border-color: rgba(255,255,255,.8); color: #fff; }
.btn-outline:hover { background: rgba(255,255,255,.12); color: #fff; }
.btn-green { background: var(--primary); color: #fff; }
.btn-green:hover { background: var(--primary-dark); color: #fff; }

/* 區塊 */
section { padding: 64px 0; }
section.alt { background: var(--bg-alt); }
.section-title { text-align: center; margin: 0 0 8px; font-size: 1.7rem; }
.section-sub { text-align: center; color: var(--muted); margin: 0 0 40px; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 24px;
}
.card .tag {
  display: inline-block; font-size: .8rem; font-weight: 600;
  color: var(--grass-dark); background: var(--accent-light);
  padding: 2px 10px; border-radius: 999px; margin-bottom: 10px;
}
.card h3 { margin: 0 0 10px; font-size: 1.2rem; }
.card ul { margin: 0; padding-left: 1.2em; }
.card p { margin: 0; }
.card li { margin: 4px 0; }

.center { text-align: center; margin-top: 32px; }

/* 客戶標誌 */
.clients {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 16px; align-items: center;
}
.clients div {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  height: 96px; display: grid; place-items: center; padding: 14px;
}
.clients img { max-height: 64px; width: auto; object-fit: contain; }

/* 行動呼籲 */
.cta { background: var(--primary-light); text-align: center; }
.cta h2 { margin: 0 0 16px; font-size: 1.6rem; }

/* 服務頁 */
.prose { max-width: 820px; margin: 0 auto; }
.prose h2 {
  font-size: 1.45rem; margin: 48px 0 16px; padding-left: 12px;
  border-left: 4px solid var(--primary);
}
.prose h2:first-child { margin-top: 0; }
.prose h3 { font-size: 1.12rem; margin: 24px 0 8px; }
.prose ul { padding-left: 1.3em; }
.prose li { margin: 6px 0; }
.note {
  background: var(--bg-alt); border-radius: var(--radius);
  padding: 16px 20px; margin: 16px 0;
}

/* 聯絡頁 */
.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; }
.contact-item { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.contact-item .label { color: var(--muted); font-size: .9rem; margin-bottom: 4px; }
.contact-item .value { font-size: 1.1rem; font-weight: 600; overflow-wrap: anywhere; }
.nowrap { white-space: nowrap; }
.contact-item .value a { text-decoration: none; }

/* 頁尾 */
.site-footer {
  background: #0d2233; color: #c6d3dc; padding: 36px 0; font-size: .92rem;
}
.site-footer .container { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.site-footer a { color: #fff; text-decoration: none; }
.site-footer p { margin: 2px 0; }

@media (max-width: 640px) {
  .site-header .container { padding-top: 10px; padding-bottom: 10px; }
  .nav { width: 100%; justify-content: space-between; }
  .nav a { padding: 6px 12px; }
  .hero { padding: 56px 0 64px; }
  section { padding: 48px 0; }
  .clients { grid-template-columns: repeat(2, 1fr); }
}