/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --c-primary: #0A2342;      /* deep navy */
  --c-accent: #C9A84C;       /* gold */
  --c-accent-dark: #A8893A;
  --c-bg: #FFFFFF;
  --c-bg-alt: #F7F9FC;
  --c-bg-dark: #0A2342;
  --c-text: #1A1A2E;
  --c-text-muted: #5A6478;
  --c-border: #E2E8F0;
  --shadow-sm: 0 1px 3px rgba(10,35,66,.08);
  --shadow-md: 0 4px 16px rgba(10,35,66,.12);
  --shadow-lg: 0 12px 40px rgba(10,35,66,.16);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: .25s ease;
  --font-sans: 'Inter', 'Noto Sans TC', system-ui, sans-serif;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-sans);
  color: var(--c-text);
  background: var(--c-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 96px 0; }
.section-dark { background: var(--c-bg-dark); color: #fff; }
.section-gray { background: var(--c-bg-alt); }

/* ===== TYPOGRAPHY ===== */
.section-eyebrow {
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: 12px;
}
.section-dark .section-eyebrow { color: var(--c-accent); }

.section-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
  color: var(--c-primary);
}
.section-dark .section-title { color: #fff; }

.section-desc {
  font-size: 1.05rem;
  color: var(--c-text-muted);
  max-width: 560px;
}
.section-dark .section-desc { color: rgba(255,255,255,.7); }

.section-header {
  text-align: center;
  margin-bottom: 64px;
}
.section-header .section-desc { margin: 0 auto; }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-size: .95rem;
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  border: 2px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--c-accent);
  color: var(--c-primary);
  border-color: var(--c-accent);
}
.btn-primary:hover {
  background: var(--c-accent-dark);
  border-color: var(--c-accent-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn-outline {
  background: transparent;
  color: var(--c-primary);
  border-color: var(--c-primary);
}
.btn-outline:hover {
  background: var(--c-primary);
  color: #fff;
}
.btn-ghost {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,.4);
}
.btn-ghost:hover { background: rgba(255,255,255,.1); }
.btn-white {
  background: #fff;
  color: var(--c-primary);
  border-color: #fff;
}
.btn-white:hover { background: var(--c-bg-alt); transform: translateY(-1px); }
.btn-full { width: 100%; justify-content: center; }

/* ===== NAVBAR ===== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(10,35,66,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.navbar.scrolled { background: rgba(10,35,66,.98); }
.nav-inner {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
  height: 68px;
  display: flex;
  align-items: center;
  gap: 40px;
}
.nav-logo { flex-shrink: 0; }
.logo-text {
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: .04em;
}
.nav-links {
  display: flex;
  gap: 32px;
  flex: 1;
}
.nav-links a {
  font-size: .9rem;
  font-weight: 500;
  color: rgba(255,255,255,.75);
  transition: var(--transition);
}
.nav-links a:hover { color: #fff; }
.nav-right {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-left: auto;
}
.lang-toggle {
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 50px;
  padding: 6px 14px;
  color: #fff;
  font-size: .8rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}
.lang-toggle:hover { background: rgba(255,255,255,.2); }
.lang-label { font-family: var(--font-sans); }
.btn-nav {
  background: var(--c-accent);
  color: var(--c-primary);
  border-radius: 50px;
  padding: 8px 20px;
  font-size: .85rem;
  font-weight: 600;
  transition: var(--transition);
}
.btn-nav:hover { background: var(--c-accent-dark); transform: translateY(-1px); }
.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background: var(--c-bg-dark);
  padding: 100px 24px 60px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 70% 20%, rgba(201,168,76,.15) 0%, transparent 60%),
    radial-gradient(ellipse at 20% 80%, rgba(201,168,76,.08) 0%, transparent 50%);
}
.hero-content {
  position: relative;
  max-width: 1140px;
  margin: 0 auto;
  width: 100%;
}
.hero-eyebrow {
  font-size: .85rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: 20px;
}
.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.1;
  margin-bottom: 24px;
}
.hero-title span { display: block; }
.hero-sub {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: rgba(255,255,255,.65);
  margin-bottom: 40px;
  max-width: 500px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats {
  position: relative;
  max-width: 1140px;
  margin: 64px auto 0;
  width: 100%;
  display: flex;
  align-items: center;
  gap: 0;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(8px);
  padding: 28px 40px;
}
.stat-item { flex: 1; text-align: center; }
.stat-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--c-accent);
  line-height: 1;
  margin-bottom: 6px;
}
.stat-label {
  font-size: .82rem;
  color: rgba(255,255,255,.55);
  font-weight: 500;
}
.stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,.12);
}

/* ===== SERVICES ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.service-card {
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  position: relative;
  transition: var(--transition);
}
.service-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.service-card.featured {
  background: var(--c-bg-dark);
  border-color: var(--c-bg-dark);
  color: #fff;
}
.service-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--c-accent);
  color: var(--c-primary);
  font-size: .75rem;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 50px;
  white-space: nowrap;
}
.service-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}
.service-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--c-primary);
}
.featured h3 { color: #fff; }
.service-card p {
  font-size: .92rem;
  color: var(--c-text-muted);
  margin-bottom: 20px;
  line-height: 1.6;
}
.featured p { color: rgba(255,255,255,.65); }
.service-list {
  list-style: none;
  margin-bottom: 28px;
}
.service-list li {
  font-size: .88rem;
  padding: 6px 0;
  border-bottom: 1px solid rgba(0,0,0,.05);
  color: var(--c-text-muted);
}
.featured .service-list li {
  border-color: rgba(255,255,255,.1);
  color: rgba(255,255,255,.7);
}
.featured .service-list li::before { content: '✓ '; color: var(--c-accent); font-weight: 700; }

/* ===== WHY HK ===== */
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.why-card {
  padding: 32px 28px;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}
.why-card:hover {
  background: rgba(255,255,255,.05);
  border-color: rgba(201,168,76,.3);
}
.why-num {
  font-size: 3rem;
  font-weight: 800;
  color: rgba(201,168,76,.2);
  line-height: 1;
  margin-bottom: 16px;
}
.why-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}
.why-card p {
  font-size: .88rem;
  color: rgba(255,255,255,.6);
  line-height: 1.7;
}

/* ===== PROCESS ===== */
.process-track {
  display: flex;
  align-items: flex-start;
  gap: 0;
  overflow-x: auto;
  padding-bottom: 16px;
}
.process-step {
  flex: 1;
  min-width: 200px;
  text-align: center;
  padding: 0 16px;
}
.step-circle {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--c-bg-dark);
  color: var(--c-accent);
  font-size: 1.3rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  border: 2px solid var(--c-accent);
}
.process-arrow {
  font-size: 1.5rem;
  color: var(--c-accent);
  flex-shrink: 0;
  margin-top: 14px;
}
.step-body h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--c-primary);
}
.step-body p {
  font-size: .85rem;
  color: var(--c-text-muted);
  line-height: 1.6;
}

/* ===== CASES ===== */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.case-card {
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: var(--transition);
}
.case-card:hover { box-shadow: var(--shadow-md); }
.case-quote {
  font-size: 3rem;
  color: var(--c-accent);
  line-height: 1;
  margin-bottom: 12px;
}
.case-text {
  font-size: .92rem;
  color: var(--c-text-muted);
  line-height: 1.7;
  margin-bottom: 24px;
}
.case-author {
  display: flex;
  align-items: center;
  gap: 12px;
}
.case-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--c-bg-dark);
  color: var(--c-accent);
  font-weight: 700;
  font-size: .9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.case-name { font-size: .9rem; font-weight: 600; }
.case-role { font-size: .78rem; color: var(--c-text-muted); }

/* ===== CTA BANNER ===== */
.cta-banner {
  background: linear-gradient(135deg, var(--c-primary) 0%, #122d52 100%);
  padding: 80px 24px;
  text-align: center;
}
.cta-banner h2 {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
}
.cta-banner p {
  color: rgba(255,255,255,.65);
  margin-bottom: 32px;
  font-size: 1.05rem;
}

/* ===== CONTACT ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 60px;
  align-items: start;
}
.contact-info { display: flex; flex-direction: column; gap: 20px; }
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}
.contact-icon { font-size: 1.4rem; flex-shrink: 0; margin-top: 2px; }
.contact-label { font-size: .78rem; color: var(--c-text-muted); margin-bottom: 2px; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; }
.contact-value { font-size: .95rem; font-weight: 500; }
.wechat-qr {
  margin-top: 8px;
}
.qr-placeholder {
  width: 120px;
  height: 120px;
  border: 2px dashed var(--c-border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-bg-alt);
}
.qr-text {
  font-size: .75rem;
  color: var(--c-text-muted);
  text-align: center;
  padding: 8px;
}
.contact-form { display: flex; flex-direction: column; gap: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label {
  font-size: .82rem;
  font-weight: 600;
  color: var(--c-text);
}
.form-group input,
.form-group select,
.form-group textarea {
  padding: 12px 16px;
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius);
  font-size: .92rem;
  font-family: var(--font-sans);
  color: var(--c-text);
  background: var(--c-bg);
  transition: var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px rgba(201,168,76,.15);
}
.form-group textarea { resize: vertical; min-height: 100px; }

/* ===== FOOTER ===== */
.footer {
  background: var(--c-bg-dark);
  color: rgba(255,255,255,.7);
  padding: 64px 0 32px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 2fr;
  gap: 60px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,.1);
  margin-bottom: 32px;
}
.footer-logo {
  font-size: 1.3rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 8px;
}
.footer-tagline { font-size: .88rem; color: rgba(255,255,255,.5); }
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.footer-col-title {
  font-size: .78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: #fff;
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  font-size: .85rem;
  padding: 4px 0;
  color: rgba(255,255,255,.55);
  transition: var(--transition);
}
.footer-col a:hover { color: var(--c-accent); }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: .82rem;
}
.footer-copy { color: rgba(255,255,255,.4); }
.footer-social { display: flex; align-items: center; gap: 12px; }
.footer-social span { color: rgba(255,255,255,.4); }
.social-link {
  background: rgba(255,255,255,.1);
  color: #fff;
  padding: 4px 12px;
  border-radius: 50px;
  font-size: .78rem;
  transition: var(--transition);
}
.social-link:hover { background: var(--c-accent); color: var(--c-primary); }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .burger { display: flex; }
  .hero-stats { flex-direction: column; gap: 20px; }
  .stat-divider { width: 40px; height: 1px; }
  .services-grid,
  .why-grid,
  .cases-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 40px; }
  .process-track { flex-direction: column; gap: 24px; }
  .process-arrow { display: none; }
  .process-step { text-align: left; display: flex; align-items: flex-start; gap: 20px; }
  .step-circle { margin: 0; flex-shrink: 0; }
  .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .section { padding: 64px 0; }
  .footer-links { grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
}