/* ============================================================
   NTN Việt Nam – style.css
   Design system: --navy #04152d  |  --accent #e8a020  |  --white #fff
   Font: Be Vietnam Pro (Google Fonts)
   Mobile-first; breakpoints 768px, 900px, 1200px
   ============================================================ */

/* === CSS CUSTOM PROPERTIES === */
:root {
  --navy:        #04152d;
  --navy-strong: #031024;
  --navy-soft:   #072b57;
  --accent:      #e8a020;
  --accent-dark: #c97010;
  --accent-soft: rgba(232, 160, 32, 0.15);
  --white:       #ffffff;
  --surface:     #f4f7fb;
  --surface-alt: #eaf0f8;
  --text:        #10233d;
  --muted:       #5f728a;
  --line:        rgba(16, 35, 61, 0.1);
  --line-inv:    rgba(255, 255, 255, 0.1);
  --shadow:      0 16px 48px rgba(4, 21, 45, 0.12);
  --shadow-lg:   0 28px 72px rgba(4, 21, 45, 0.2);
  --radius-xl:   28px;
  --radius-lg:   20px;
  --radius-md:   14px;
  --max-width:   1200px;
  --hh:          88px;   /* header height */
  --t:           240ms ease;
}

/* === RESET === */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Be Vietnam Pro", system-ui, sans-serif;
  color: var(--text);
  background: var(--navy-strong);
  line-height: 1.65;
}

body.menu-open { overflow: hidden; }

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

h1, h2, h3, h4 { margin: 0; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }

/* === CONTAINERS === */
.header-shell,
.hero-grid,
.services-shell,
.section-container,
.about-shell,
.footer-shell {
  width: min(calc(100% - 48px), var(--max-width));
  margin-inline: auto;
}

/* === SCROLL PROGRESS BAR === */
.progress {
  position: fixed;
  inset: 0 0 auto;
  z-index: 1200;
  height: 3px;
  pointer-events: none;
}

.progress span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #f5c842);
}

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1100;
  transition: background var(--t), backdrop-filter var(--t), box-shadow var(--t);
}

.site-header.scrolled {
  background: rgba(4, 21, 45, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  box-shadow: 0 8px 30px rgba(2, 12, 25, 0.28);
}

.header-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--hh);
  gap: 24px;
}

/* Brand / Logo */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.brand-video {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  object-fit: contain;
  background: var(--navy-soft);
}

.brand-copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-copy strong {
  display: block;
  color: var(--white);
  font-size: 0.88rem;
  font-weight: 800;
  letter-spacing: 0.15em;
}

.brand-copy small {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.74rem;
}

/* Hamburger */
.menu-btn {
  display: none;
  width: 48px;
  height: 48px;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--white);
  transition: background var(--t);
}

.menu-btn span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: currentColor;
  border-radius: 999px;
  transition: transform var(--t), opacity var(--t);
}

.menu-btn[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-btn[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-btn[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Nav */
.main-nav {
  display: flex;
  align-items: center;
  gap: 20px;
}

.main-nav a {
  position: relative;
  color: rgba(255, 255, 255, 0.76);
  font-size: 0.92rem;
  font-weight: 600;
  white-space: nowrap;
  transition: color var(--t);
}

.main-nav a::after {
  content: "";
  position: absolute;
  inset: auto 0 -6px;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t);
}

.main-nav a:hover,
.main-nav a.active { color: var(--white); }

.main-nav a:hover::after,
.main-nav a.active::after { transform: scaleX(1); }

.nav-cta {
  padding: 0.75rem 1.4rem;
  border-radius: 999px;
  background: var(--accent);
  color: var(--navy) !important;
  font-weight: 700;
  transition: background var(--t), transform var(--t), box-shadow var(--t);
  box-shadow: 0 8px 24px rgba(232, 160, 32, 0.35);
}

.nav-cta::after { display: none; }

.nav-cta:hover {
  background: var(--accent-dark) !important;
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(232, 160, 32, 0.45);
}

.nav-login {
  padding: 0.75rem 1.4rem;
  border-radius: 999px;
  background: var(--white);
  font-weight: 700;
  transition: background var(--t), transform var(--t), box-shadow var(--t), color var(--t);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
}

.nav-login::after { display: none; }

.main-nav .nav-login { color: var(--navy); }

.nav-login:hover {
  background: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(232, 160, 32, 0.45);
}

.main-nav .nav-login:hover { color: var(--navy); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: calc(var(--hh) + 80px) 0 80px;
  overflow: hidden;
  background: var(--navy-strong);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-logo-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  pointer-events: none;
}

/* Overlay nhẹ hơn để video hiển thị rõ */
.hero-overlay {
  background:
    linear-gradient(90deg, rgba(3, 10, 25, 0.15) 0%, rgba(4, 21, 45, 0.08) 55%, rgba(4, 21, 45, 0.02) 100%),
    linear-gradient(180deg, transparent 0%, rgba(4, 21, 45, 0.12) 100%);
}

.hero-grid { position: relative; z-index: 1; }

.hero-content {
  max-width: 820px;
  color: var(--white);
}

/* Reveal animations */
.hero-kicker,
.hero-content h1,
.hero-summary,
.hero-actions,
.hero-stats {
  opacity: 0;
  transform: translateY(24px);
  animation: reveal-up 0.8s cubic-bezier(0.2, 1, 0.2, 1) forwards;
}

.hero-kicker        { animation-delay: 0.10s; }
.hero-content h1    { animation-delay: 0.20s; }
.hero-summary       { animation-delay: 0.30s; }
.hero-actions       { animation-delay: 0.40s; }
.hero-stats         { animation-delay: 0.52s; }

.hero-kicker {
  margin: 0 0 18px;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.32em;
  text-transform: uppercase;
}

.hero-content h1 {
  font-size: clamp(2.8rem, 6.5vw, 5.4rem);
  line-height: 1.02;
  letter-spacing: -0.04em;
  font-weight: 800;
}

.hero-summary {
  margin-top: 18px;
  font-size: clamp(1rem, 2vw, 1.18rem);
  color: rgba(255, 255, 255, 0.78);
  max-width: 680px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0.85rem 1.8rem;
  border: 2px solid transparent;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 700;
  transition: transform var(--t), box-shadow var(--t), background var(--t), border-color var(--t), color var(--t);
}

.btn:hover, .btn:focus-visible { transform: translateY(-3px); }

.btn-primary {
  background: var(--accent);
  color: var(--navy);
  box-shadow: 0 10px 28px rgba(232, 160, 32, 0.38);
}

.btn-primary:hover, .btn-primary:focus-visible {
  background: var(--accent-dark);
  box-shadow: 0 16px 36px rgba(232, 160, 32, 0.48);
}

.btn-ghost {
  border-color: rgba(255, 255, 255, 0.42);
  color: var(--white);
  background: transparent;
}

.btn-ghost:hover, .btn-ghost:focus-visible {
  border-color: rgba(255, 255, 255, 0.78);
  background: rgba(255, 255, 255, 0.06);
}

/* Hero stats */
.hero-stats {
  display: flex;
  flex-wrap: wrap;
  margin-top: 52px;
  max-width: 820px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.03);
}

.stat-item {
  flex: 1 1 160px;
  padding: 22px 20px;
  text-align: center;
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--white);
}

.stat-item:last-child { border-right: 0; }

.stat-number {
  display: block;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  letter-spacing: -0.04em;
}

.stat-label {
  display: block;
  margin-top: 6px;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.6);
  font-weight: 500;
}

/* Scroll hint */
.scroll-hint {
  position: absolute;
  left: 50%;
  bottom: 26px;
  z-index: 2;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  transform: translateX(-50%);
}

.scroll-hint i {
  display: block;
  width: 14px;
  height: 14px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  animation: bounce 1.8s ease infinite;
}

/* ============================================================
   SHARED SECTION HELPERS
   ============================================================ */
.section-label {
  margin: 0 0 12px;
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent);
}

.section-title {
  font-size: clamp(1.9rem, 4.5vw, 3.2rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  font-weight: 800;
}

.section-header {
  margin-bottom: 44px;
  text-align: center;
}

/* Light sections label/title colour overrides */
.about-section .section-label,
.process-section .section-label,
.arc-section .section-label,
.vmv-section .section-label,
.partners-section .section-label {
  color: var(--accent-dark);
}

.about-section .section-title,
.process-section .section-title,
.arc-section .section-title,
.vmv-section .section-title,
.partners-section .section-title { color: var(--text); }

/* Animate on scroll */
[data-animate] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

[data-animate].visible { opacity: 1; transform: none; }

/* ============================================================
   SERVICES STRIP
   ============================================================ */
.services-strip {
  padding: clamp(64px, 8vw, 96px) 0;
  background: linear-gradient(180deg, var(--navy-soft) 0%, var(--navy) 100%);
}

.services-shell {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}

.service-card {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  padding: 28px 22px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.03);
  color: var(--white);
  transition: background var(--t), border-color var(--t), transform var(--t);
}

.service-card:hover {
  background: rgba(255, 255, 255, 0.065);
  border-color: rgba(232, 160, 32, 0.3);
  transform: translateY(-4px);
}

.service-icon {
  flex: none;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  border-radius: 16px;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid rgba(232, 160, 32, 0.2);
}

.service-body h3 {
  font-size: 1.02rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.service-body p {
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.65;
}

/* ============================================================
   ABOUT SECTION
   ============================================================ */
.about-section {
  padding: clamp(72px, 9vw, 108px) 0;
  background: var(--surface);
}

.about-shell {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.about-copy .section-title { margin-bottom: 28px; }

.about-blocks { display: grid; gap: 16px; }

.about-block {
  padding: 18px 20px;
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: rgba(201, 112, 16, 0.05);
}

.about-block h4 {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--accent-dark);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 6px;
}

.about-block p {
  font-size: 0.92rem;
  color: var(--muted);
  line-height: 1.7;
}

.about-image img {
  width: 100%;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  object-fit: cover;
  aspect-ratio: 4 / 3;
}

/* ============================================================
   FIELDS SECTION
   ============================================================ */
.fields-section {
  padding: clamp(72px, 9vw, 108px) 0;
  background: linear-gradient(180deg, var(--navy-soft) 0%, var(--navy) 100%);
}

.fields-section .section-label { color: var(--accent); }
.fields-section .section-title { color: var(--white); }

.fields-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 18px;
}

.field-card {
  position: relative;
  padding: 30px 22px 26px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.03);
  color: var(--white);
  overflow: hidden;
  transition: background var(--t), border-color var(--t), transform var(--t);
}

.field-card:hover {
  background: rgba(255, 255, 255, 0.065);
  border-color: rgba(232, 160, 32, 0.35);
  transform: translateY(-5px);
}

.field-num {
  position: absolute;
  top: 14px;
  right: 16px;
  font-size: 0.74rem;
  font-weight: 800;
  color: rgba(232, 160, 32, 0.55);
  letter-spacing: 0.08em;
}

.field-card h3 {
  font-size: 1.02rem;
  font-weight: 700;
  margin-bottom: 10px;
  padding-right: 26px;
}

.field-card p {
  font-size: 0.87rem;
  color: rgba(255, 255, 255, 0.62);
  line-height: 1.65;
}

/* ============================================================
   PROCESS SECTION
   ============================================================ */
.process-section {
  padding: clamp(72px, 9vw, 108px) 0;
  background: var(--surface-alt);
}

.process-layout {
  display: grid;
  grid-template-columns: 1fr 0.65fr;
  gap: 52px;
  align-items: start;
}

.process-timeline { display: flex; flex-direction: column; }

.process-step {
  display: flex;
  gap: 22px;
  position: relative;
  padding-bottom: 30px;
}

.process-step:last-child { padding-bottom: 0; }

.process-step::before {
  content: "";
  position: absolute;
  left: 19px;
  top: 44px;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, rgba(201, 112, 16, 0.5) 0%, rgba(201, 112, 16, 0.05) 100%);
}

.process-step:last-child::before { display: none; }

.step-num {
  flex: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--navy);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-body { padding-top: 6px; }

.step-body h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 6px;
}

.step-body p {
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.65;
}

.process-image img {
  width: 100%;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  object-fit: cover;
  aspect-ratio: 3 / 4;
  position: sticky;
  top: calc(var(--hh) + 24px);
}

/* ============================================================
   JIG SECTION
   ============================================================ */
.jig-section {
  padding: clamp(72px, 9vw, 108px) 0;
  background: linear-gradient(135deg, var(--navy-soft) 0%, var(--navy-strong) 100%);
}

.jig-section .section-label { color: var(--accent); }

.jig-layout {
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  gap: 52px;
  align-items: center;
}

.jig-copy .section-title {
  color: var(--white);
  margin-bottom: 26px;
}

.jig-blocks { display: grid; gap: 16px; }

.jig-block {
  padding: 16px 18px;
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: rgba(255, 255, 255, 0.03);
}

.jig-block h4 {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin-bottom: 8px;
}

.jig-block p {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.65;
}

.jig-list { display: grid; gap: 6px; }

.jig-list li {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.65);
  padding-left: 16px;
  position: relative;
}

.jig-list li::before {
  content: "·";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

.jig-image img {
  width: 100%;
  border-radius: var(--radius-xl);
  box-shadow: 0 28px 64px rgba(0, 0, 0, 0.38);
  object-fit: cover;
  aspect-ratio: 4 / 3;
}

/* ============================================================
   ARC PROCESS (8-step grid)
   ============================================================ */
.arc-section {
  padding: clamp(72px, 9vw, 108px) 0;
  background: var(--surface);
}

.arc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 18px;
}

.arc-card {
  padding: 26px 20px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--white);
  box-shadow: 0 4px 16px rgba(4, 21, 45, 0.06);
  transition: transform var(--t), box-shadow var(--t), border-color var(--t);
}

.arc-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 40px rgba(4, 21, 45, 0.13);
  border-color: var(--accent);
}

.arc-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--navy);
  font-size: 0.8rem;
  font-weight: 800;
  margin-bottom: 14px;
}

.arc-card h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 6px;
}

.arc-card p {
  font-size: 0.85rem;
  color: var(--muted);
}

/* ============================================================
   ADVANTAGES SECTION
   ============================================================ */
.advantages-section {
  padding: clamp(72px, 9vw, 108px) 0;
  background: linear-gradient(180deg, var(--navy) 0%, var(--navy-strong) 100%);
}

.advantages-section .section-label { color: var(--accent); }
.advantages-section .section-title { color: var(--white); }

.adv-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 18px;
}

.adv-card {
  padding: 30px 24px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.03);
  color: var(--white);
  transition: background var(--t), border-color var(--t), transform var(--t);
}

.adv-card:hover {
  background: rgba(255, 255, 255, 0.065);
  border-color: rgba(232, 160, 32, 0.28);
  transform: translateY(-4px);
}

.adv-icon {
  display: block;
  font-size: 2rem;
  margin-bottom: 14px;
}

.adv-card h3 {
  font-size: 1.02rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.adv-card p {
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.62);
  line-height: 1.65;
}

/* ============================================================
   VMV (Vision Mission Values)
   ============================================================ */
.vmv-section {
  padding: clamp(72px, 9vw, 108px) 0;
  background: var(--surface-alt);
}

.vmv-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.vmv-card {
  padding: 36px 26px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--line);
  background: var(--white);
  box-shadow: 0 4px 18px rgba(4, 21, 45, 0.06);
  transition: transform var(--t), box-shadow var(--t);
}

.vmv-card--accent {
  background: var(--navy);
  border-color: transparent;
  color: var(--white);
}

.vmv-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 16px 48px rgba(4, 21, 45, 0.14);
}

.vmv-icon {
  display: block;
  font-size: 2.2rem;
  margin-bottom: 16px;
}

.vmv-card h3 {
  font-size: 1.08rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 12px;
}

.vmv-card--accent h3 { color: var(--accent); }

.vmv-card p {
  font-size: 0.92rem;
  color: var(--muted);
  line-height: 1.7;
}

.vmv-card--accent p { color: rgba(255, 255, 255, 0.7); }

/* ============================================================
   COMMITMENT SECTION
   ============================================================ */
.commitment-section {
  padding: clamp(72px, 9vw, 108px) 0;
  background: linear-gradient(135deg, var(--navy-soft), var(--navy-strong));
}

.commitment-section .section-label { color: var(--accent); }
.commitment-section .section-title { color: var(--white); }

.commit-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.commit-card {
  padding: 34px 28px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  background: rgba(255, 255, 255, 0.04);
  color: var(--white);
}

.commit-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 18px;
}

.commit-list { display: grid; gap: 10px; }

.commit-list li {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
  padding-left: 22px;
  position: relative;
  line-height: 1.6;
}

.commit-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

/* ============================================================
   PARTNERS SECTION
   ============================================================ */
.partners-section {
  padding: clamp(72px, 9vw, 108px) 0;
  background: var(--surface);
}

.partners-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 16px;
}

.partner-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 28px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--white);
  font-size: 1rem;
  font-weight: 700;
  color: var(--muted);
  box-shadow: 0 2px 10px rgba(4, 21, 45, 0.05);
  transition: border-color var(--t), color var(--t), transform var(--t), box-shadow var(--t);
}

.partner-logo:hover {
  border-color: var(--accent);
  color: var(--accent-dark);
  transform: translateY(-3px);
  box-shadow: 0 10px 28px rgba(4, 21, 45, 0.1);
}

/* ============================================================
   CONTACT SECTION
   ============================================================ */
.contact-section {
  position: relative;
  padding: clamp(80px, 10vw, 120px) 0;
  overflow: hidden;
  background: var(--navy-strong);
}

.contact-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  pointer-events: none;
}

.contact-overlay {
  position: absolute;
  inset: 0;
  background: rgba(3, 10, 25, 0.82);
  pointer-events: none;
}

.contact-inner { position: relative; z-index: 1; }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 0.85fr;
  gap: 60px;
  align-items: start;
}

.contact-form-wrap .section-title {
  color: var(--white);
  margin-bottom: 28px;
}

.contact-form { display: grid; gap: 18px; }

.form-group { display: grid; gap: 7px; }

.form-group label {
  font-size: 0.84rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.75);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.85rem 1.1rem;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.06);
  color: var(--white);
  font: inherit;
  font-size: 0.92rem;
  transition: border-color var(--t), background var(--t);
  outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(255, 255, 255, 0.32); }

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  background: rgba(255, 255, 255, 0.09);
}

.form-group textarea { resize: vertical; min-height: 110px; }

.field-error {
  font-size: 0.78rem;
  color: #f87171;
  min-height: 1em;
}

.btn-submit { width: 100%; }

.form-success {
  font-size: 0.88rem;
  color: #6ee7b7;
  min-height: 1.2em;
  text-align: center;
}

.contact-info-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 24px;
}

.contact-list { display: grid; gap: 14px; }

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.04);
  color: var(--white);
  transition: background var(--t), border-color var(--t);
}

.contact-item:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(232, 160, 32, 0.28);
}

.contact-icon { font-size: 1.3rem; flex: none; }

.contact-item small {
  display: block;
  font-size: 0.74rem;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 2px;
}

.contact-item strong {
  font-size: 0.9rem;
  font-weight: 600;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--navy-strong);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 32px 0;
}

.footer-top-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  padding-bottom: 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  margin-bottom: 20px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-brand strong {
  color: var(--white);
  font-size: 0.88rem;
  font-weight: 800;
  letter-spacing: 0.15em;
}

.footer-brand span {
  color: rgba(255, 255, 255, 0.45);
  font-size: 0.76rem;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
}

.footer-nav a {
  font-size: 0.84rem;
  color: rgba(255, 255, 255, 0.55);
  transition: color var(--t);
}

.footer-nav a:hover { color: var(--accent); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom span {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.38);
}

.footer-back-top {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.5);
  transition: color var(--t);
}

.footer-back-top:hover { color: var(--accent); }

/* ============================================================
   HERO-STATS-BAR (inside hero)
   ============================================================ */
.hero-stats-bar {
  position: relative;
  z-index: 1;
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes reveal-up {
  to { opacity: 1; transform: none; }
}

@keyframes bounce {
  0%, 100% { transform: rotate(45deg) translateY(0); }
  50%       { transform: rotate(45deg) translateY(5px); }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .about-shell { grid-template-columns: 1fr; }
  .process-layout { grid-template-columns: 1fr; }
  .jig-layout { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .vmv-grid { grid-template-columns: 1fr; }
  .commit-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  :root { --hh: 68px; }

  .menu-btn { display: flex; flex-direction: column; align-items: center; justify-content: center; }

  .main-nav {
    position: fixed;
    inset: var(--hh) 0 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 20px 24px 32px;
    background: rgba(3, 10, 25, 0.97);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    transform: translateX(100%);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
  }

  .main-nav.open { transform: none; }

  .main-nav a {
    padding: 14px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    font-size: 1rem;
  }

  .main-nav a::after { display: none; }

  .nav-cta,
  .nav-login {
    margin-top: 12px;
    text-align: center;
    border-radius: var(--radius-md);
  }

  .hero-content h1 { font-size: clamp(2.2rem, 9vw, 3.4rem); }

  .hero-stats { flex-direction: column; }
  .stat-item { border-right: 0; border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
  .stat-item:last-child { border-bottom: 0; }
}