:root {
  --navy: #0f2a3f;
  --navy-2: #173a55;
  --gold: #b8935a;
  --gold-soft: #e9dcc6;
  --ink: #1c2530;
  --muted: #5b6875;
  --line: #e3e6ea;
  --bg: #ffffff;
  --bg-alt: #f6f4f0;
  --radius: 10px;
  --serif: "Cormorant Garamond", Georgia, "Times New Roman", serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3 { margin: 0 0 .5em; line-height: 1.15; color: var(--navy); }
h1, h2 { font-family: var(--serif); font-weight: 600; letter-spacing: -.01em; }
h1 { font-size: clamp(2.6rem, 5.5vw, 4.2rem); }
h2 { font-size: clamp(2rem, 3.6vw, 2.8rem); }
h3 { font-size: 1.15rem; font-weight: 600; }
p { margin: 0 0 1em; }

.container { width: 100%; max-width: 1160px; margin: 0 auto; padding: 0 24px; }

.eyebrow {
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1rem;
}
.eyebrow.light { color: var(--gold-soft); }
.lead { font-size: 1.12rem; color: var(--muted); max-width: 36rem; }

/* Buttons */
.btn {
  display: inline-block;
  padding: .85rem 1.6rem;
  background: var(--navy);
  color: #fff;
  border: 1px solid var(--navy);
  border-radius: 999px;
  font: 500 .95rem var(--sans);
  text-decoration: none;
  cursor: pointer;
  transition: background .2s, color .2s, border-color .2s;
}
.btn:hover { background: var(--gold); border-color: var(--gold); }
.btn-ghost { background: transparent; color: var(--navy); }
.btn-ghost:hover { background: var(--navy); color: #fff; border-color: var(--navy); }
.btn-small { padding: .55rem 1.2rem; font-size: .88rem; }
.btn-block { width: 100%; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s;
}
.site-header.scrolled { border-bottom-color: var(--line); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.nav-menu { margin-left: auto; }
.brand { display: flex; align-items: center; gap: .7rem; text-decoration: none; }
.brand-mark {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border: 1.5px solid var(--gold);
  border-radius: 50%;
  font: 600 1.35rem var(--serif);
  color: var(--navy);
}
.brand-name { font: 600 1.45rem var(--serif); color: var(--navy); }
.brand-name em { color: var(--gold); font-style: italic; }
.nav-menu { display: flex; align-items: center; gap: 2rem; }
.nav-menu a:not(.btn) {
  text-decoration: none; font-size: .95rem; color: var(--ink);
  position: relative;
}
.nav-menu a:not(.btn)::after {
  content: ""; position: absolute; left: 0; bottom: -4px; height: 1px; width: 0;
  background: var(--gold); transition: width .2s;
}
.nav-menu a:not(.btn):hover::after { width: 100%; }
.nav-toggle { display: none; }
.nav-right { display: flex; align-items: center; gap: 8px; order: 3; margin-left: 1.5rem; }
.lang-toggle {
  background: none; border: 1px solid var(--line); border-radius: 999px;
  padding: .4rem .8rem; cursor: pointer; font: 500 .85rem var(--sans); color: var(--muted);
  transition: border-color .2s;
}
.lang-toggle:hover { border-color: var(--gold); }
.lang-toggle .sep { margin: 0 .3rem; opacity: .4; }
html:not([lang="zh-Hant-HK"]) .lang-toggle [data-lang="en"],
html[lang="zh-Hant-HK"] .lang-toggle [data-lang="zh"] { color: var(--navy); font-weight: 600; }

/* Chinese typography */
html[lang="zh-Hant-HK"] body { font-family: "Inter", "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif; }
html[lang="zh-Hant-HK"] h1, html[lang="zh-Hant-HK"] h2,
html[lang="zh-Hant-HK"] .fact strong { font-family: "Noto Serif TC", "PMingLiU", serif; letter-spacing: .02em; }
html[lang="zh-Hant-HK"] h1 { line-height: 1.3; }
html[lang="zh-Hant-HK"] h2 { font-size: clamp(1.7rem, 3vw, 2.3rem); line-height: 1.35; }
html[lang="zh-Hant-HK"] .eyebrow,
html[lang="zh-Hant-HK"] .contact-list .label,
html[lang="zh-Hant-HK"] .step-num { font-size: .9rem; letter-spacing: .2em; }

/* Hero */
.hero {
  padding: 96px 0 104px;
  background:
    radial-gradient(circle at 85% 20%, rgba(184, 147, 90, .12), transparent 45%),
    linear-gradient(180deg, #fff 0%, var(--bg-alt) 100%);
}
.hero-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 64px; align-items: center; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 2rem; }
.hero-media { position: relative; margin: 0; }
.hero-media::before {
  content: ""; position: absolute; inset: 24px -24px -24px 24px;
  border: 1px solid var(--gold); border-radius: var(--radius); z-index: 0;
}
.hero-media img {
  position: relative; z-index: 1;
  width: 100%; height: auto; aspect-ratio: 9 / 11; object-fit: cover;
  border-radius: var(--radius);
  box-shadow: 0 30px 60px -30px rgba(15, 42, 63, .55);
  background: var(--navy);
}

/* Sections */
.section { padding: 104px 0; }
.section.alt { background: var(--bg-alt); }
.section-head { max-width: 40rem; margin-bottom: 56px; }

.services { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.service {
  padding: 36px 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  transition: border-color .2s, transform .2s, box-shadow .2s;
}
.service:hover { border-color: var(--gold); transform: translateY(-3px); box-shadow: 0 20px 40px -28px rgba(15, 42, 63, .4); }
.service-num { display: block; font: 600 1.9rem var(--serif); color: var(--gold); margin-bottom: 1rem; }
.service h3 { font-size: 1.3rem; }
.service p { color: var(--muted); }
.service ul { list-style: none; padding: 0; margin: 1.25rem 0 0; border-top: 1px solid var(--line); }
.service li { padding: .6rem 0 .6rem 1.4rem; border-bottom: 1px solid var(--line); position: relative; font-size: .94rem; }
.service li::before { content: ""; position: absolute; left: 0; top: 1.15rem; width: 8px; height: 1px; background: var(--gold); }

/* Band */
.band { background: var(--navy); color: #fff; }
.band h2 { color: #fff; }
.split { display: grid; grid-template-columns: 1fr 1.3fr; gap: 64px; align-items: start; }
.facts { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: rgba(255, 255, 255, .12); border-radius: var(--radius); overflow: hidden; }
.fact { background: var(--navy); padding: 28px; }
.fact strong { display: block; font: 600 1.4rem var(--serif); color: var(--gold-soft); margin-bottom: .4rem; }
.fact span { color: rgba(255, 255, 255, .75); font-size: .94rem; }

/* Steps */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; counter-reset: s; }
.steps li { border-top: 2px solid var(--navy); padding-top: 24px; }
.step-num, .step-idx { font: 600 .8rem var(--sans); letter-spacing: .14em; text-transform: uppercase; color: var(--gold); }
.step-idx { display: inline-block; margin-bottom: .6rem; }
.steps p { color: var(--muted); font-size: .95rem; }

/* About */
.about-copy p { color: var(--muted); font-size: 1.05rem; }
.values { list-style: none; padding: 2rem 0 0; margin: 2rem 0 0; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 12px; }
.values li { padding: .45rem 1.1rem; border: 1px solid var(--gold); border-radius: 999px; font-size: .9rem; }
.values strong { font-weight: 500; color: var(--navy); }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: start; }
.contact-list { font-style: normal; margin-top: 2rem; display: grid; gap: 20px; }
.contact-list div { display: grid; grid-template-columns: 80px 1fr; gap: 16px; padding-top: 20px; border-top: 1px solid var(--line); }
.contact-list .label { font-size: .78rem; letter-spacing: .14em; text-transform: uppercase; color: var(--gold); padding-top: 3px; }
.contact-list a { color: var(--navy); }
.contact-form {
  background: var(--bg-alt);
  padding: 40px;
  border-radius: var(--radius);
  display: grid; gap: 18px;
}
.field { display: grid; gap: 6px; }
.field label { font-size: .85rem; font-weight: 500; color: var(--navy); }
.field input, .field select, .field textarea {
  font: inherit; font-size: .95rem;
  padding: .75rem .9rem;
  border: 1px solid #d5d9de;
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
  transition: border-color .2s, box-shadow .2s;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--gold); box-shadow: 0 0 0 3px rgba(184, 147, 90, .18);
}
.field.invalid input, .field.invalid textarea { border-color: #b3261e; }
.form-note { font-size: .82rem; color: var(--muted); margin: 0; text-align: center; }

/* Footer */
.site-footer { background: #0a1f2f; color: rgba(255, 255, 255, .7); padding: 64px 0 28px; font-size: .9rem; }
.footer-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 48px; padding-bottom: 40px; border-bottom: 1px solid rgba(255, 255, 255, .1); }
.brand-light .brand-name, .brand-light .brand-mark { color: #fff; }
.footer-tag { margin-top: 1rem; }
.footer-meta strong { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; gap: 16px; padding-top: 24px; font-size: .82rem; }
.footer-bottom a { text-decoration: none; }
.footer-bottom a:hover { color: var(--gold-soft); }

/* Reveal */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* Responsive */
@media (max-width: 960px) {
  .hero-grid, .split, .contact-grid, .footer-grid { grid-template-columns: 1fr; gap: 40px; }
  .services { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .section { padding: 80px 0; }
  .hero { padding: 64px 0 80px; }
  .hero-media::before { display: none; }
  .hero-media img { aspect-ratio: 4 / 3; }
}
@media (max-width: 760px) {
  .container { padding: 0 16px; }
  .nav-right { margin-left: auto; }
  .nav-toggle {
    display: grid; gap: 6px; width: 40px; height: 40px; place-content: center;
    background: none; border: 0; cursor: pointer;
  }
  .nav-toggle span { display: block; width: 22px; height: 1.5px; background: var(--navy); transition: transform .2s; }
  .nav-toggle[aria-expanded="true"] span:first-child { transform: translateY(3.75px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.75px) rotate(-45deg); }
  .nav-menu {
    position: absolute; top: 72px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--line);
    padding: 8px 16px 20px;
    display: none;
  }
  .nav-menu.open { display: flex; }
  .nav-menu a:not(.btn) { padding: 14px 0; border-bottom: 1px solid var(--line); }
  .nav-menu .btn { margin-top: 16px; text-align: center; }
  .steps, .facts { grid-template-columns: 1fr; }
  .contact-form { padding: 24px; }
  .footer-bottom { flex-direction: column; }
}