/* ===================================================
   QUẢNG THUẬN GROUP — Corporate Website Stylesheet
   Version: 1.0
   =================================================== */

/* ---------- CSS Variables ---------- */
:root {
  --primary:      #0C2340;   /* Deep Navy */
  --primary-dark: #071527;
  --accent:       #C8A96E;   /* Gold */
  --accent-light: #E8D5A3;
  --secondary:    #1C6B8C;   /* Steel Blue */
  --secondary-light: #2E8FB5;
  --text-dark:    #1A1A2E;
  --text-mid:     #4A4A6A;
  --text-light:   #7A7A9A;
  --bg-light:     #F5F7FA;
  --bg-white:     #FFFFFF;
  --border:       #E0E4EC;
  --shadow-sm:    0 2px 8px rgba(12,35,64,.08);
  --shadow-md:    0 8px 32px rgba(12,35,64,.12);
  --shadow-lg:    0 20px 60px rgba(12,35,64,.16);
  --radius-sm:    6px;
  --radius-md:    12px;
  --radius-lg:    20px;
  --transition:   0.3s cubic-bezier(.4,0,.2,1);
  --max-width:    1280px;
  --nav-height:   80px;
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont,
               'Helvetica Neue', Arial, sans-serif;
  color: var(--text-dark);
  background: var(--bg-white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.25;
  color: var(--primary);
}
h1 { font-size: clamp(2rem, 4vw, 3.25rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.5rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.6rem); }
h4 { font-size: 1.15rem; }
p { font-size: 1rem; color: var(--text-mid); }

/* ---------- Container ---------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Section Layout ---------- */
.section {
  padding: 96px 0;
}
.section--alt {
  background: var(--bg-light);
}
.section--dark {
  background: var(--primary);
  color: white;
}
.section--dark h1,
.section--dark h2,
.section--dark h3,
.section--dark h4 { color: white; }
.section--dark p { color: rgba(255,255,255,.75); }

.section-header {
  text-align: center;
  margin-bottom: 64px;
}
.section-header .eyebrow {
  display: inline-block;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
  padding: 4px 14px;
  background: rgba(200,169,110,.12);
  border-radius: 100px;
}
.section--dark .eyebrow {
  background: rgba(200,169,110,.2);
}
.section-header h2 { margin-bottom: 16px; }
.section-header p { max-width: 640px; margin: 0 auto; font-size: 1.1rem; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-size: .95rem;
  font-weight: 600;
  transition: var(--transition);
  white-space: nowrap;
}
.btn--primary {
  background: var(--accent);
  color: var(--primary);
}
.btn--primary:hover {
  background: #b8954e;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(200,169,110,.35);
}
.btn--outline {
  border: 2px solid currentColor;
  color: white;
}
.btn--outline:hover {
  background: white;
  color: var(--primary);
}
.btn--outline-dark {
  border: 2px solid var(--primary);
  color: var(--primary);
}
.btn--outline-dark:hover {
  background: var(--primary);
  color: white;
}
.btn--sm { padding: 10px 20px; font-size: .875rem; }
.btn--lg { padding: 18px 36px; font-size: 1.05rem; }

/* ---------- Navigation ---------- */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  z-index: 1000;
  transition: var(--transition);
  background: transparent;
}
.navbar.scrolled {
  background: var(--primary);
  box-shadow: var(--shadow-md);
}
.navbar.page-nav {
  background: var(--primary);
  box-shadow: var(--shadow-sm);
}

.navbar .container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: white;
}
.nav-brand .logo-icon {
  width: 44px; height: 44px;
  background: var(--accent);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--primary);
  flex-shrink: 0;
}
.nav-brand .logo-text { display: flex; flex-direction: column; }
.nav-brand .logo-name {
  font-size: 1rem;
  font-weight: 700;
  color: white;
  line-height: 1.1;
}
.nav-brand .logo-tagline {
  font-size: .65rem;
  color: var(--accent-light);
  letter-spacing: .05em;
  text-transform: uppercase;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  color: rgba(255,255,255,.85);
  font-size: .88rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}
.nav-link:hover, .nav-link.active {
  color: white;
  background: rgba(255,255,255,.1);
}

/* Dropdown */
.nav-item { position: relative; }
.nav-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 260px;
  background: white;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: var(--transition);
  z-index: 100;
}
.nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.nav-dropdown a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  color: var(--text-dark);
  font-size: .875rem;
  transition: var(--transition);
}
.nav-dropdown a:hover {
  background: var(--bg-light);
  color: var(--primary);
}
.nav-dropdown a .icon {
  width: 28px; height: 28px;
  border-radius: 6px;
  background: var(--bg-light);
  display: flex; align-items: center; justify-content: center;
  font-size: .9rem;
  flex-shrink: 0;
}
.dropdown-divider {
  height: 1px;
  background: var(--border);
  margin: 6px 0;
}

/* Language Switcher */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: 8px;
  background: rgba(255,255,255,.1);
  border-radius: 100px;
  padding: 3px;
}
.lang-btn {
  padding: 5px 10px;
  border-radius: 100px;
  font-size: .78rem;
  font-weight: 600;
  color: rgba(255,255,255,.7);
  transition: var(--transition);
}
.lang-btn.active,
.lang-btn:hover {
  background: var(--accent);
  color: var(--primary);
}

/* Mobile Menu Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: 6px;
  transition: var(--transition);
}
.nav-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: white;
  border-radius: 2px;
  transition: var(--transition);
}
.nav-toggle:hover { background: rgba(255,255,255,.1); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--secondary) 100%);
  overflow: hidden;
  padding-top: var(--nav-height);
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 60% 40%, rgba(28,107,140,.3) 0%, transparent 70%),
    radial-gradient(ellipse 50% 80% at 10% 90%, rgba(200,169,110,.08) 0%, transparent 70%);
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: 60px 60px;
}
.hero .container {
  position: relative;
  z-index: 1;
}
.hero-content { max-width: 720px; }
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}
.hero-eyebrow::before {
  content: '';
  display: block;
  width: 32px; height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.hero h1 {
  color: white;
  margin-bottom: 12px;
  font-size: clamp(2.2rem, 4.5vw, 3.6rem);
}
.hero-subtitle {
  font-size: 1.1rem;
  color: var(--accent-light);
  margin-bottom: 20px;
  font-weight: 500;
  letter-spacing: .01em;
}
.hero-desc {
  font-size: 1.05rem;
  color: rgba(255,255,255,.75);
  max-width: 580px;
  margin-bottom: 40px;
  line-height: 1.75;
}
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}

/* Hero Stats */
.hero-stats {
  display: flex;
  gap: 48px;
  margin-top: 72px;
  padding-top: 40px;
  border-top: 1px solid rgba(255,255,255,.12);
  flex-wrap: wrap;
}
.hero-stat .number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 4px;
}
.hero-stat .label {
  font-size: .8rem;
  color: rgba(255,255,255,.6);
  text-transform: uppercase;
  letter-spacing: .08em;
}

/* Scroll indicator */
.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: rgba(255,255,255,.4);
  font-size: .7rem;
  letter-spacing: .1em;
  text-transform: uppercase;
}
.scroll-line {
  width: 1px; height: 48px;
  background: linear-gradient(to bottom, rgba(255,255,255,.4), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%,100% { opacity: .4; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(.7); }
}

/* ---------- Who We Are ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.about-visual {
  position: relative;
}
.about-main-card {
  background: var(--primary);
  border-radius: var(--radius-lg);
  padding: 48px;
  color: white;
  position: relative;
  overflow: hidden;
}
.about-main-card::before {
  content: '';
  position: absolute;
  top: -40px; right: -40px;
  width: 200px; height: 200px;
  background: var(--accent);
  opacity: .08;
  border-radius: 50%;
}
.about-main-card .big-text {
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 8px;
}
.about-main-card p { color: rgba(255,255,255,.75); }

.about-badge {
  position: absolute;
  bottom: -20px; right: 32px;
  background: var(--accent);
  color: var(--primary);
  padding: 16px 24px;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: .9rem;
  box-shadow: var(--shadow-md);
  text-align: center;
}
.about-content .eyebrow {
  display: inline-block;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
.about-content h2 { margin-bottom: 20px; }
.about-content p { margin-bottom: 20px; font-size: 1.05rem; }
.about-pillars {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 32px;
}
.pillar-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px;
  background: var(--bg-light);
  border-radius: var(--radius-sm);
}
.pillar-icon {
  width: 36px; height: 36px;
  background: var(--primary);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}
.pillar-item h4 {
  font-size: .85rem;
  margin-bottom: 2px;
}
.pillar-item p {
  font-size: .78rem;
  color: var(--text-light);
}

/* ---------- Business Sectors ---------- */
.sectors-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}
.sector-card {
  background: white;
  border-radius: var(--radius-md);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: relative;
  overflow: hidden;
}
.sector-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--secondary));
  transform: scaleX(0);
  transition: var(--transition);
}
.sector-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}
.sector-card:hover::before { transform: scaleX(1); }

.sector-icon {
  width: 56px; height: 56px;
  background: var(--bg-light);
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem;
  transition: var(--transition);
}
.sector-card:hover .sector-icon {
  background: var(--primary);
}
.sector-num {
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--accent);
  text-transform: uppercase;
}
.sector-card h3 {
  font-size: 1.1rem;
  margin-bottom: 4px;
}
.sector-card .vi-name {
  font-size: .8rem;
  color: var(--text-light);
  margin-bottom: 10px;
}
.sector-card p {
  font-size: .9rem;
  flex: 1;
}
.sector-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .85rem;
  font-weight: 600;
  color: var(--primary);
  margin-top: auto;
  transition: var(--transition);
}
.sector-link:hover {
  color: var(--accent);
  gap: 10px;
}

/* ---------- Value Chain ---------- */
.value-chain {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  max-width: 700px;
  margin: 0 auto;
}
.chain-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  position: relative;
}
.chain-box {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: var(--radius-md);
  padding: 20px 32px;
  text-align: center;
  width: 100%;
  max-width: 480px;
  transition: var(--transition);
}
.chain-box:hover {
  background: rgba(200,169,110,.12);
  border-color: var(--accent);
}
.chain-box .step-num {
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 6px;
}
.chain-box h4 { color: white; font-size: 1rem; margin-bottom: 4px; }
.chain-box p { font-size: .85rem; color: rgba(255,255,255,.6); }
.chain-arrow {
  width: 2px;
  height: 32px;
  background: linear-gradient(to bottom, rgba(200,169,110,.5), rgba(200,169,110,.2));
  position: relative;
}
.chain-arrow::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 6px solid rgba(200,169,110,.5);
}

/* ---------- Partnerships ---------- */
.partners-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
  margin-top: 48px;
}
.partner-category {
  background: white;
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.partner-category:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.partner-category .cat-icon {
  font-size: 2rem;
  margin-bottom: 14px;
}
.partner-category h4 { font-size: .95rem; margin-bottom: 6px; }
.partner-category p { font-size: .83rem; color: var(--text-light); }

/* WUXIN Highlight */
.wuxin-highlight {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  border-radius: var(--radius-lg);
  padding: 48px;
  color: white;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: center;
  margin-top: 48px;
}
.wuxin-highlight h3 { color: white; margin-bottom: 12px; }
.wuxin-highlight p { color: rgba(255,255,255,.75); }
.wuxin-badge {
  background: var(--accent);
  color: var(--primary);
  padding: 20px 32px;
  border-radius: var(--radius-md);
  text-align: center;
  font-weight: 700;
}
.wuxin-badge .badge-title { font-size: 1.1rem; }
.wuxin-badge .badge-sub { font-size: .75rem; margin-top: 4px; }

/* ---------- Featured Project ---------- */
.project-feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.project-visual {
  position: relative;
}
.project-image-placeholder {
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: white;
  text-align: center;
  padding: 40px;
  overflow: hidden;
  position: relative;
}
.project-image-placeholder::before {
  content: '';
  position: absolute;
  bottom: -20px; right: -20px;
  width: 160px; height: 160px;
  background: var(--accent);
  opacity: .1;
  border-radius: 50%;
}
.project-image-placeholder .port-icon { font-size: 4rem; margin-bottom: 16px; }
.project-image-placeholder h3 { color: white; }
.project-image-placeholder p { color: rgba(255,255,255,.7); }

.project-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: rgba(200,169,110,.12);
  border: 1px solid rgba(200,169,110,.3);
  border-radius: 100px;
  font-size: .78rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 16px;
}
.project-content h2 { margin-bottom: 16px; }
.project-content p { margin-bottom: 20px; font-size: 1.05rem; }
.project-details {
  background: var(--bg-light);
  border-radius: var(--radius-md);
  padding: 24px;
  margin: 24px 0;
}
.project-detail-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: .9rem;
}
.project-detail-row:last-child { border-bottom: none; }
.project-detail-row .detail-label { color: var(--text-light); font-size: .83rem; }
.project-detail-row .detail-value { font-weight: 600; color: var(--primary); }

/* ---------- Sustainability ---------- */
.sustainability-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.sustain-card {
  background: white;
  border-radius: var(--radius-md);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.sustain-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.sustain-icon {
  width: 52px; height: 52px;
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}
.sustain-card h3 { font-size: 1rem; margin-bottom: 10px; }
.sustain-card p { font-size: .88rem; }

/* ---------- Partner Inquiry Form ---------- */
.inquiry-wrapper {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 64px;
  align-items: start;
}
.inquiry-info h2 { color: white; margin-bottom: 20px; }
.inquiry-info p { color: rgba(255,255,255,.75); margin-bottom: 32px; }
.inquiry-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 0;
  border-top: 1px solid rgba(255,255,255,.1);
}
.inquiry-contact-item .icon {
  width: 40px; height: 40px;
  background: rgba(255,255,255,.08);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.inquiry-contact-item .label { font-size: .75rem; color: rgba(255,255,255,.5); }
.inquiry-contact-item .value { font-size: .9rem; color: white; font-weight: 500; }

.inquiry-form {
  background: white;
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: var(--shadow-lg);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-group {
  margin-bottom: 20px;
}
.form-group.full { grid-column: 1 / -1; }
.form-group label {
  display: block;
  font-size: .83rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 6px;
}
.form-group label .required { color: #e05252; }
.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: .9rem;
  color: var(--text-dark);
  background: white;
  transition: var(--transition);
  outline: none;
  font-family: inherit;
}
.form-control:focus {
  border-color: var(--secondary);
  box-shadow: 0 0 0 3px rgba(28,107,140,.1);
}
select.form-control { cursor: pointer; }
textarea.form-control { resize: vertical; min-height: 100px; }

.checkbox-group { display: flex; flex-wrap: wrap; gap: 8px; }
.checkbox-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  background: var(--bg-light);
  border: 1.5px solid var(--border);
  border-radius: 100px;
  cursor: pointer;
  font-size: .82rem;
  font-weight: 500;
  transition: var(--transition);
}
.checkbox-item:hover {
  border-color: var(--secondary);
  color: var(--secondary);
}
.checkbox-item input[type=checkbox] { display: none; }
.checkbox-item.checked {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

.consent-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: .85rem;
  color: var(--text-mid);
  padding: 16px;
  background: var(--bg-light);
  border-radius: var(--radius-sm);
}
.consent-row input { margin-top: 2px; accent-color: var(--primary); }

/* ---------- Footer ---------- */
.footer {
  background: var(--primary-dark);
  color: white;
  padding: 80px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 64px;
}
.footer-brand .logo-name { font-size: 1.2rem; font-weight: 700; margin-bottom: 4px; }
.footer-brand .logo-tagline { font-size: .75rem; color: var(--accent-light); letter-spacing: .06em; }
.footer-brand p {
  margin-top: 16px;
  font-size: .875rem;
  color: rgba(255,255,255,.55);
  line-height: 1.75;
}
.footer-col h4 {
  color: white;
  font-size: .85rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul li a {
  color: rgba(255,255,255,.55);
  font-size: .875rem;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
}
.footer-col ul li a:hover { color: var(--accent); }
.footer-divider {
  height: 1px;
  background: rgba(255,255,255,.08);
  margin-bottom: 32px;
}
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: .82rem;
  color: rgba(255,255,255,.4);
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom-links {
  display: flex;
  gap: 24px;
}
.footer-bottom-links a {
  color: rgba(255,255,255,.4);
  font-size: .82rem;
  transition: var(--transition);
}
.footer-bottom-links a:hover { color: var(--accent); }

/* Social Icons */
.social-links {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}
.social-link {
  width: 36px; height: 36px;
  background: rgba(255,255,255,.08);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: .9rem;
  color: rgba(255,255,255,.6);
  transition: var(--transition);
}
.social-link:hover {
  background: var(--accent);
  color: var(--primary);
}

/* ---------- Inner Page Hero ---------- */
.page-hero {
  padding: calc(var(--nav-height) + 80px) 0 80px;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 70% at 70% 50%, rgba(28,107,140,.25) 0%, transparent 70%);
}
.page-hero .container { position: relative; z-index: 1; }
.page-hero .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .82rem;
  color: rgba(255,255,255,.5);
  margin-bottom: 20px;
}
.page-hero .breadcrumb a { color: rgba(255,255,255,.5); transition: var(--transition); }
.page-hero .breadcrumb a:hover { color: var(--accent); }
.page-hero .breadcrumb span { color: rgba(255,255,255,.3); }
.page-hero h1 { color: white; margin-bottom: 16px; }
.page-hero p { color: rgba(255,255,255,.7); font-size: 1.1rem; max-width: 600px; }

/* ---------- Cards ---------- */
.card {
  background: white;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: var(--transition);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }

/* ---------- Tabs ---------- */
.tab-bar {
  display: flex;
  gap: 4px;
  background: var(--bg-light);
  border-radius: 100px;
  padding: 4px;
  width: fit-content;
  margin-bottom: 40px;
}
.tab-btn {
  padding: 8px 20px;
  border-radius: 100px;
  font-size: .875rem;
  font-weight: 600;
  color: var(--text-mid);
  transition: var(--transition);
}
.tab-btn.active, .tab-btn:hover {
  background: white;
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}

/* ---------- Misc Components ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 12px;
  border-radius: 100px;
  font-size: .75rem;
  font-weight: 600;
}
.badge--blue { background: rgba(28,107,140,.1); color: var(--secondary); }
.badge--gold { background: rgba(200,169,110,.12); color: var(--accent); }
.badge--green { background: rgba(40,167,69,.1); color: #28a745; }

.divider {
  display: flex;
  align-items: center;
  gap: 20px;
  margin: 40px 0;
  color: var(--text-light);
  font-size: .82rem;
}
.divider::before, .divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* Alert Banner */
.alert-banner {
  background: rgba(200,169,110,.1);
  border: 1px solid rgba(200,169,110,.3);
  border-radius: var(--radius-sm);
  padding: 14px 20px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: .88rem;
  color: var(--text-mid);
  margin-bottom: 32px;
}
.alert-banner .icon { color: var(--accent); font-size: 1rem; flex-shrink: 0; margin-top: 1px; }

/* Sector detail */
.sector-detail-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 48px;
  align-items: start;
}
.service-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 24px;
}
.service-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  background: var(--bg-light);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--accent);
}
.service-item .icon { font-size: 1.1rem; flex-shrink: 0; }
.service-item p { font-size: .9rem; }

.info-card {
  background: var(--primary);
  border-radius: var(--radius-md);
  padding: 28px;
  color: white;
  position: sticky;
  top: 100px;
}
.info-card h4 { color: white; margin-bottom: 16px; }
.info-row {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255,255,255,.1);
  font-size: .875rem;
}
.info-row:last-child { border-bottom: none; }
.info-row .key { color: rgba(255,255,255,.55); }
.info-row .val { font-weight: 600; color: white; }

/* ---------- Animations ---------- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
.animate-in { animation: fadeInUp .6s ease both; }
.delay-1 { animation-delay: .1s; }
.delay-2 { animation-delay: .2s; }
.delay-3 { animation-delay: .3s; }
.delay-4 { animation-delay: .4s; }

/* ---------- Utilities ---------- */
.text-accent { color: var(--accent); }
.text-center { text-align: center; }
.mt-auto { margin-top: auto; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-40 { margin-bottom: 40px; }

/* Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-light); }
::-webkit-scrollbar-thumb { background: var(--secondary); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .project-feature { grid-template-columns: 1fr; }
  .wuxin-highlight { grid-template-columns: 1fr; }
  .sustainability-grid { grid-template-columns: 1fr 1fr; }
  .inquiry-wrapper { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  :root { --nav-height: 68px; }
  .section { padding: 64px 0; }
  .section-header { margin-bottom: 40px; }
  .nav-menu { display: none; }
  .nav-toggle { display: flex; }
  .nav-menu.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--nav-height);
    left: 0; right: 0;
    background: var(--primary-dark);
    padding: 16px;
    gap: 4px;
    box-shadow: var(--shadow-lg);
    z-index: 999;
  }
  .nav-menu.open .nav-item { width: 100%; }
  .nav-menu.open .nav-link { display: block; padding: 12px 16px; }
  .nav-dropdown { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; background: rgba(255,255,255,.05); }
  .lang-switcher { margin-top: 12px; width: fit-content; }
  .sectors-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .inquiry-form { padding: 28px; }
  .form-row { grid-template-columns: 1fr; }
  .about-pillars { grid-template-columns: 1fr; }
  .hero-stats { gap: 32px; }
  .sustainability-grid { grid-template-columns: 1fr; }
  .sector-detail-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero-cta { flex-direction: column; align-items: flex-start; }
  .btn { width: 100%; justify-content: center; }
}