:root {
  --purple-deep: #241B2F;
  --purple-royal: #4B0082;
  --purple-soft: #F3EFF7;
  --gold: #C9A227;
  --gold-light: #D4AF37;
  --gold-pale: #F7E3A1;
  --sage: #8FB996;        /* 淺綠：Core Values 標題 */
  --sage-deep: #6B9A78;
  --bg: #FAFAF8;
  --bg-alt: #F5F2F7;
  --text: #2C2C2C;
  --text-muted: #6B6B6B;
  --border: #E8E4ED;
  --radius: 10px;
  --max: 1180px;
  --font-en: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-zh: 'Noto Sans TC', 'PingFang TC', 'Microsoft JhengHei', sans-serif;
  --font: var(--font-en), var(--font-zh);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font); color: var(--text); background: var(--bg); line-height: 1.8; font-size: 16px; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
.container { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
body.lang-zh .lang-en { display: none !important; }
body.lang-en .lang-zh { display: none !important; }

/* Nav */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(250,250,248,0.92); backdrop-filter: blur(16px); border-bottom: 1px solid transparent; transition: border-color .3s, box-shadow .3s; }
.nav--scrolled { border-bottom-color: var(--border); box-shadow: 0 1px 16px rgba(36,27,47,.06); }
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.nav__logo { display: flex; align-items: center; gap: 10px; }
.nav__logo-icon { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: 50%; background: linear-gradient(135deg, var(--gold), var(--gold-light)); color: var(--purple-deep); font-weight: 700; font-size: 1.1rem; font-family: var(--font-en); }
.nav__logo-text { font-size: 1.15rem; font-weight: 600; color: var(--purple-deep); }
.nav__logo-text em { font-style: normal; font-weight: 400; color: var(--text-muted); margin-left: 3px; }
.nav__links { display: flex; align-items: center; gap: 22px; }
.nav__links a { font-size: .85rem; font-weight: 500; color: var(--text-muted); transition: color .2s; }
.nav__links a:hover { color: var(--purple-royal); }
.nav__cta { color: #fff !important; background: var(--purple-deep); padding: 9px 22px; border-radius: 6px; transition: background .2s; }
.nav__cta:hover { background: var(--purple-royal) !important; }
.nav__lang { display: flex; align-items: center; }
.nav__toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav__toggle span { display: block; width: 22px; height: 2px; background: var(--purple-deep); margin: 5px 0; transition: .3s; border-radius: 1px; }
.lang-switch { background: transparent; border: 1.5px solid var(--border); border-radius: 6px; padding: 4px 6px; cursor: pointer; font-family: var(--font); font-size: .78rem; font-weight: 600; color: var(--text-muted); display: inline-flex; gap: 2px; transition: border-color .2s; }
.lang-switch:hover { border-color: var(--gold); }
.lang-switch span { padding: 2px 7px; border-radius: 4px; transition: all .2s; }
.lang-switch span.active { background: var(--purple-deep); color: var(--gold-pale); }

/* Hero */
.hero { padding: 160px 0 100px; background: linear-gradient(160deg, var(--purple-deep) 0%, #1A1225 60%, #241B2F 100%); color: #fff; position: relative; overflow: hidden; }
.hero::before { content: ''; position: absolute; top: -40%; right: -10%; width: 600px; height: 600px; border-radius: 50%; background: radial-gradient(circle, rgba(201,162,39,.12) 0%, transparent 70%); }
.hero__inner { max-width: 760px; position: relative; z-index: 1; }
.hero__eyebrow { font-size: .75rem; font-weight: 600; text-transform: uppercase; letter-spacing: .14em; color: var(--gold); margin-bottom: 24px; }
.hero__title { font-size: clamp(2rem, 5vw, 3.2rem); font-weight: 700; line-height: 1.2; letter-spacing: -.02em; color: #fff; margin-bottom: 8px; }
.hero__title em { font-style: normal; color: var(--gold-pale); font-weight: 400; font-size: .65em; display: inline-block; margin-top: 8px; }
.hero__sub { font-size: 1.05rem; color: rgba(255,255,255,.75); max-width: 640px; margin: 24px 0 40px; }
.hero__actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 48px; }
.btn { display: inline-block; padding: 14px 32px; border-radius: 8px; font-size: .95rem; font-weight: 600; transition: all .25s; cursor: pointer; font-family: var(--font); border: none; }
.btn--gold { background: linear-gradient(135deg, var(--gold), var(--gold-light)); color: var(--purple-deep); }
.btn--gold:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(201,162,39,.35); }
.btn--outline { background: transparent; color: #fff; border: 1.5px solid rgba(255,255,255,.3); }
.btn--outline:hover { border-color: var(--gold); color: var(--gold-pale); }
.btn--full { width: 100%; }
.hero__trust { display: flex; flex-wrap: wrap; gap: 20px; font-size: .82rem; color: rgba(255,255,255,.6); }
.hero__trust span::before { content: '◆ '; color: var(--gold); font-size: .6rem; vertical-align: middle; }

/* Sections */
.section { padding: 96px 0; }
.section--alt { background: var(--bg-alt); }
.section--dark { background: var(--purple-deep); color: #fff; }
.section__label { font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .14em; color: var(--gold); margin-bottom: 12px; }
.section__label--light { color: var(--gold-pale); }
.section__title { font-size: clamp(1.5rem, 3.2vw, 2.1rem); font-weight: 700; letter-spacing: -.02em; color: var(--purple-deep); margin-bottom: 16px; max-width: 720px; }
.section__title--light { color: #fff; }
.section__desc { color: var(--text-muted); max-width: 720px; margin-bottom: 40px; }
.section__subtitle { font-size: 1.05rem; font-weight: 700; color: var(--purple-deep); margin: 48px 0 20px; }

/* ============ Lead letter (reusable) ============ */
.lead {
  display: inline-block;
  color: var(--gold);
  font-family: var(--font-en);
  font-weight: 700;
  letter-spacing: -0.02em;
  transition: color .3s, transform .3s, text-shadow .3s;
}
.why-card:hover .lead,
.service-card:hover .lead,
.track__col:hover .lead,
.value-item:hover .lead {
  color: var(--purple-royal);
  transform: scale(1.15);
  text-shadow: 0 0 10px rgba(201,162,39,0.55);
  animation: leadFlash .9s ease-in-out infinite;
}
@keyframes leadFlash {
  0%, 100% { text-shadow: 0 0 10px rgba(201,162,39,0.35); }
  50%      { text-shadow: 0 0 20px rgba(201,162,39,0.85); }
}

/* ============ Operations ============ */
.why__grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin-top: 40px; }
.why-card {
  position: relative;
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 32px 28px 34px;
  transition: box-shadow .35s, transform .35s, border-color .35s;
  overflow: hidden;
}
.why-card::after {
  content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--gold-light), var(--gold));
  transform: scaleX(0); transform-origin: left; transition: transform .5s;
}
.why-card:hover::after { transform: scaleX(1); }
.why-card:hover { box-shadow: 0 16px 48px rgba(36,27,47,.10); transform: translateY(-3px); border-color: transparent; }
.why-card__icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 10px;
  background: var(--purple-soft); color: var(--purple-royal);
  font-size: 1.1rem; margin-bottom: 16px;
  transition: background .3s, color .3s, transform .3s;
}
.why-card:hover .why-card__icon { background: var(--gold); color: var(--purple-deep); transform: rotate(-6deg); }
.why-card h3 { font-size: 1.05rem; font-weight: 700; color: var(--purple-deep); margin-bottom: 12px; line-height: 1.35; }
.why-card h3 .lead { font-size: 1.25em; margin-right: 2px; }
.why-card p { font-size: .88rem; color: var(--text-muted); line-height: 1.75; }

/* ============ Services ============ */
.services__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.service-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 32px 28px; transition: box-shadow .3s, border-color .3s, transform .3s; }
.service-card:hover { box-shadow: 0 12px 40px rgba(36,27,47,.09); border-color: var(--gold-pale); transform: translateY(-2px); }
.service-card h3 { font-size: 1rem; font-weight: 700; color: var(--purple-deep); margin-bottom: 18px; padding-bottom: 12px; border-bottom: 2px solid var(--gold); display: inline-block; line-height: 1.2; }
.service-card h3 .lead { font-size: 1.9em; line-height: 0.85; margin-right: 3px; vertical-align: -3px; }
.service-card li { font-size: .88rem; color: var(--text-muted); padding: 7px 0 7px 20px; position: relative; line-height: 1.6; }
.service-card li::before { content: '▸'; position: absolute; left: 0; color: var(--gold); font-size: .75rem; font-weight: 700; }

/* ============ Tags ============ */
.tags { display: flex; flex-wrap: wrap; gap: 12px; }
.tag { display: inline-block; padding: 10px 22px; border-radius: 100px; background: #fff; border: 1px solid var(--border); font-size: .88rem; font-weight: 500; color: var(--purple-deep); transition: all .25s; }
.tag:hover { border-color: var(--gold); color: var(--purple-royal); background: var(--purple-soft); transform: translateY(-2px); box-shadow: 0 4px 16px rgba(201,162,39,.15); }

/* ============ Regions ============ */
.regions__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 8px; }
.region-card {
  position: relative; overflow: hidden;
  background: linear-gradient(160deg, #ffffff 0%, #FBF8F0 100%);
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 40px 28px 32px; text-align: center;
  transition: all .35s ease;
}
.region-card::before {
  content: ''; position: absolute; top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: radial-gradient(circle at center, rgba(201,162,39,.10) 0%, transparent 60%);
  opacity: 0; transition: opacity .4s;
}
.region-card:hover { border-color: var(--gold); transform: translateY(-4px); box-shadow: 0 16px 48px rgba(36,27,47,.10); }
.region-card:hover::before { opacity: 1; }
.region-card__icon {
  position: relative; z-index: 1;
  display: inline-flex; align-items: center; justify-content: center;
  width: 60px; height: 60px;
  margin-bottom: 18px;
  color: var(--gold);
  transition: transform .35s, color .35s;
}
.region-card__icon svg { width: 100%; height: 100%; display: block; }
.region-card:hover .region-card__icon { transform: scale(1.10) rotate(6deg); color: var(--purple-royal); }
.region-card h4 { position: relative; z-index: 1; font-size: 1.05rem; font-weight: 700; color: var(--purple-deep); margin-bottom: 8px; }
.region-card p { position: relative; z-index: 1; font-size: .85rem; color: var(--text-muted); line-height: 1.6; }

/* ============ Track Record ============ */
.track__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; margin-top: 40px; }
.track__col h3 { font-size: 1.1rem; font-weight: 700; color: var(--purple-deep); margin-bottom: 20px; padding-bottom: 12px; border-bottom: 2px solid var(--gold); display: inline-block; line-height: 1.2; }
.track__col h3 .lead { font-size: 1.75em; line-height: 0.85; margin-right: 2px; vertical-align: -3px; }
.track__col ul li { font-size: .88rem; color: var(--text-muted); padding: 12px 0 12px 20px; position: relative; line-height: 1.65; border-bottom: 1px solid var(--border); }
.track__col ul li:last-child { border-bottom: none; }
.track__col ul li::before { content: '—'; position: absolute; left: 0; color: var(--gold); }

/* ============ About ============ */
.about__grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 56px; align-items: start; margin-top: 40px; }
.about__text { position: relative; }
.about__text::before {
  content: 'MTL';
  position: absolute; top: -50px; right: -20px;
  font-family: var(--font-en); font-weight: 700;
  font-size: 6rem; line-height: 1;
  color: rgba(201,162,39,0.07);
  letter-spacing: -0.05em;
  pointer-events: none; user-select: none; z-index: 0;
}
.about__text p { position: relative; z-index: 1; color: var(--text-muted); margin-bottom: 20px; font-size: .95rem; }
.about__emphasis { font-weight: 600; color: var(--purple-deep) !important; padding-left: 20px; border-left: 3px solid var(--gold); }
.about__emphasis--italic { font-style: italic; }

.about__values {
  position: relative;
  background: linear-gradient(160deg, #ffffff 0%, #FBF8F0 100%);
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 32px 28px;
  transition: box-shadow .35s, border-color .35s;
}
.about__values:hover { box-shadow: 0 16px 48px rgba(36,27,47,.10); border-color: var(--gold-pale); }
.about__values-title {
  font-size: 1rem; font-weight: 700;
  color: var(--sage-deep);
  margin-bottom: 20px; padding-bottom: 14px;
  border-bottom: 2px solid var(--sage);
  display: inline-block;
}
.value-item {
  display: flex; gap: 16px;
  padding: 18px 0; border-bottom: 1px solid var(--border);
  transition: padding-left .3s;
}
.value-item:last-child { border-bottom: none; }
.value-item:hover { padding-left: 8px; }
.value-item__num {
  flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 50%;
  background: var(--purple-soft); color: var(--purple-royal);
  font-family: var(--font-en); font-weight: 700; font-size: .78rem;
  transition: background .3s, color .3s, transform .3s;
}
.value-item:hover .value-item__num { background: var(--gold); color: var(--purple-deep); transform: rotate(-8deg) scale(1.05); }
.value-item__body { flex: 1; }
.value-item__key {
  display: block;
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 1rem;
  color: var(--purple-royal);
  margin-bottom: 4px;
  line-height: 1.2;
}
.value-item__key .lead { font-size: 1.7em; line-height: 0.85; margin-right: 2px; vertical-align: -3px; }
.value-item__desc { display: block; font-size: .85rem; color: var(--text-muted); line-height: 1.7; }

/* ============ Contact ============ */
.contact__grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 64px;
  margin-top: 48px;
  align-items: start;
}

/* Left column */
.contact__info { display: flex; flex-direction: column; gap: 48px; }
.contact__items { display: flex; flex-direction: column; gap: 32px; }
.contact__item { }
.contact__label {
  display: block;
  font-size: .78rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .1em;
  color: var(--gold); margin-bottom: 6px;
}
.contact__item p, .contact__item a {
  color: rgba(255,255,255,.85); font-size: .95rem; line-height: 1.6;
}
.contact__item a:hover { color: var(--gold-pale); }

/* Photos — 20% smaller */
.contact__photos {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  max-width: 416px;   /* 520 * 0.8 */
}
.photo-card {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(201,162,39,.28);
  border-radius: 8px;
  overflow: hidden;
  transition: border-color .3s, transform .3s, box-shadow .3s;
}
.photo-card:hover {
  border-color: var(--gold);
  transform: translateY(-3px);
  box-shadow: 0 14px 32px rgba(0,0,0,.30);
}
.photo-card img { width: 100%; aspect-ratio: 3/4; object-fit: cover; display: block; }
.photo-card figcaption { padding: 10px 10px 12px; text-align: center; }
.photo-card strong { display: block; font-size: .82rem; font-weight: 700; color: #fff; margin-bottom: 3px; }
.photo-card span { display: block; font-size: .68rem; color: var(--gold-pale); letter-spacing: .02em; line-height: 1.4; }

/* Right — Enquiry form */
.contact__form-wrap {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(201,162,39,.25);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: border-color .3s, box-shadow .3s;
}
.contact__form-wrap:hover { border-color: rgba(201,162,39,.45); box-shadow: 0 16px 40px rgba(0,0,0,.20); }
.contact__form-title {
  font-size: 1.15rem; font-weight: 700;
  color: #fff; margin-bottom: 8px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--gold);
  display: inline-block;
}
.contact__form-sub {
  font-size: .85rem; color: rgba(255,255,255,.6);
  margin: 12px 0 24px;
}
.contact__form { display: flex; flex-direction: column; gap: 16px; }
.form-row { display: flex; flex-direction: column; gap: 6px; }
.form-label {
  font-size: .72rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .1em;
  color: var(--gold-pale);
}
.contact__form input,
.contact__form textarea {
  font-family: var(--font);
  font-size: .9rem;
  padding: 12px 14px;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 6px;
  color: #fff;
  transition: border-color .25s, background .25s;
  resize: vertical;
}
.contact__form input::placeholder,
.contact__form textarea::placeholder {
  color: rgba(255,255,255,.35);
}
.contact__form input:focus,
.contact__form textarea:focus {
  outline: none;
  border-color: var(--gold);
  background: rgba(255,255,255,.09);
}

/* Footer */
.footer { padding: 40px 0; background: #1A1225; border-top: 1px solid rgba(255,255,255,.06); }
.footer__inner { display: flex; flex-direction: column; align-items: center; gap: 12px; text-align: center; }
.footer__brand { display: flex; align-items: center; gap: 8px; color: #fff; font-weight: 600; }
.footer p { font-size: .8rem; color: rgba(255,255,255,.45); }
.footer__meta { color: rgba(255,255,255,.3) !important; font-size: .75rem !important; }

/* Reveal */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal--visible { opacity: 1; transform: translateY(0); }

/* Responsive */
@media (max-width: 1024px) {
  .services__grid { grid-template-columns: repeat(2, 1fr); }
  .regions__grid { grid-template-columns: repeat(3, 1fr); }
  .about__grid { grid-template-columns: 1fr; gap: 40px; }
  .track__grid { grid-template-columns: 1fr; gap: 32px; }
  .contact__grid { grid-template-columns: 1fr; gap: 56px; }
  .contact__photos { max-width: 100%; }
}
@media (max-width: 768px) {
  .nav__toggle { display: block; }
  .nav__links { position: fixed; top: 72px; left: 0; right: 0; background: var(--bg); flex-direction: column; padding: 24px; gap: 0; border-bottom: 1px solid var(--border); transform: translateY(-120%); transition: transform .3s ease; box-shadow: 0 8px 24px rgba(36,27,47,.08); max-height: calc(100vh - 72px); overflow-y: auto; }
  .nav__links--open { transform: translateY(0); }
  .nav__links li { width: 100%; }
  .nav__links a { display: block; padding: 14px 0; border-bottom: 1px solid var(--border); }
  .nav__cta { text-align: center; margin-top: 12px; border-radius: 6px; }
  .nav__lang { margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--border); }
  .hero { padding: 120px 0 72px; }
  .section { padding: 64px 0; }
  .why__grid { grid-template-columns: 1fr; }
  .services__grid { grid-template-columns: 1fr; }
  .hero__trust { flex-direction: column; gap: 8px; }
  .regions__grid { grid-template-columns: 1fr; }
  .about__text::before { font-size: 4rem; top: -30px; right: -10px; }
}
@media (max-width: 480px) {
  .hero__actions { flex-direction: column; }
  .btn { width: 100%; text-align: center; }
  .contact__photos { grid-template-columns: 1fr 1fr; gap: 16px; }
}