/* ===== SHEYONE Brand System ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --black: #0f2340;
  --dark: #1a3358;
  --dark-elevated: #243d66;
  --primary: #1F497D;
  --primary-light: #4F81BD;
  --primary-deep: #152a4a;
  --accent: #4BACC6;
  --accent-teal: #3a9aaa;
  --accent-glow: rgba(75, 172, 198, 0.25);
  --white: #ffffff;
  --gray-100: #f4f6f8;
  --gray-200: #e8ecf0;
  --gray-400: #9aa3b2;
  --gray-600: #5c6578;
  --gray-800: #2a3140;
  --text: #1a1f2e;
  --text-light: rgba(255,255,255,0.88);
  --text-muted: rgba(255,255,255,0.62);
  --shadow: 0 8px 32px rgba(15, 35, 64, 0.2);
  --shadow-lg: 0 20px 60px rgba(15, 35, 64, 0.32);
  --radius: 4px;
  --radius-lg: 8px;
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --logo-height: 75px;
  --logo-offset-y: 6px;
  --serif: 'Cormorant Garamond', 'Noto Serif KR', Georgia, serif;
  --sans: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
  font-size: 16px;
  scrollbar-gutter: stable;
  hyphens: none;
  word-break: normal;
  overflow-wrap: break-word;
}

html[lang="ko"] {
  word-break: keep-all;
  overflow-wrap: normal;
}

html[lang="ko"] :where([lang="en"], [lang="en-US"]) {
  word-break: normal;
  overflow-wrap: normal;
  font-variant-east-asian: normal;
}

body {
  font-family: var(--sans);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
  background: var(--white);
}

a { text-decoration: none; color: inherit; transition: color var(--transition), opacity var(--transition); }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container { max-width: 1180px; margin: 0 auto; padding: 0 28px; }

.section { padding: 110px 0; }
.section-dark { background: linear-gradient(180deg, var(--dark) 0%, var(--black) 100%); color: var(--white); }
.section-light { background: var(--gray-100); }

.section-stripe-light {
  background: var(--white);
  color: var(--text);
}

.section-stripe-dark {
  background: linear-gradient(180deg, var(--dark) 0%, var(--black) 100%);
  color: var(--white);
}

.section-stripe-dark .section-title { color: var(--white); }
.section-stripe-dark .section-desc { color: var(--text-muted); }

.section-stripe-dark .org-card {
  background: rgba(36, 61, 102, 0.55);
  border-color: rgba(79, 129, 189, 0.22);
}
.section-stripe-dark .org-card h4 { color: var(--accent); }
.section-stripe-dark .org-card p { color: var(--text-muted); }

.section-stripe-dark .info-item { border-bottom-color: rgba(255, 255, 255, 0.12); }
.section-stripe-dark .info-item .label { color: var(--accent); }
.section-stripe-dark .info-item .value { color: var(--text-light); }
.section-stripe-dark .about-image { border-color: rgba(79, 129, 189, 0.22); }

.section-stripe-dark .solution-row {
  border-top-color: rgba(255, 255, 255, 0.12);
  border-bottom-color: rgba(255, 255, 255, 0.12);
}
.section-stripe-dark .solution-row h3 { color: var(--white); }
.section-stripe-dark .solution-row p { color: var(--text-muted); }

.section-stripe-dark .tech-table td {
  color: var(--text-light);
  border-bottom-color: rgba(255, 255, 255, 0.12);
  background: transparent;
}
.section-stripe-dark .tech-table tr:nth-child(even) td {
  background: rgba(255, 255, 255, 0.04);
}

.section-stripe-dark .project-card {
  background: rgba(36, 61, 102, 0.55);
  border-color: rgba(79, 129, 189, 0.22);
}
.section-stripe-dark .project-card h3 { color: var(--white); }
.section-stripe-dark .project-card p,
.section-stripe-dark .project-card li { color: var(--text-muted); }

.section-label {
  font-family: var(--serif);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}

.section-title {
  font-family: var(--serif);
  font-size: clamp(2rem, 4.5vw, 2.75rem);
  font-weight: 600;
  line-height: 1.25;
  margin-bottom: 22px;
  letter-spacing: -0.01em;
}

.section-dark .section-title { color: var(--white); }

.section-desc {
  font-size: 1.02rem;
  color: var(--gray-600);
  max-width: 700px;
  line-height: 1.85;
}

.section-dark .section-desc { color: var(--text-muted); }

.brand-serif {
  font-family: var(--serif);
  letter-spacing: 0.08em;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 34px;
  border-radius: 0;
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
}

.btn-primary {
  background: var(--accent);
  color: var(--primary-deep);
}
.btn-primary:hover {
  background: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.45);
}
.btn-outline:hover {
  background: var(--white);
  color: var(--primary-deep);
  border-color: var(--white);
}

.btn-dark {
  background: var(--primary);
  color: var(--white);
  border: 1px solid var(--primary);
}
.btn-dark:hover {
  background: var(--primary-light);
  border-color: var(--primary-light);
}

/* ===== Header ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: 101px;
  box-sizing: border-box;
  background: var(--black);
  border-bottom: 1px solid rgba(79, 129, 189, 0.18);
  transform: translateZ(0);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 80%;
  max-width: 1520px;
  height: 100px;
  min-height: 100px;
  max-height: 100px;
  box-sizing: border-box;
  margin: 0 auto;
  padding: 0 12px;
}

.logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  height: 100px;
  line-height: 0;
}

.logo img {
  height: var(--logo-height);
  width: auto;
  transform: translateY(var(--logo-offset-y));
}

.nav {
  flex: 1;
  display: flex;
  gap: clamp(2px, 0.35vw, 8px);
  flex-wrap: nowrap;
  margin: 0 clamp(16px, 2vw, 32px);
  justify-content: center;
  align-items: center;
}

.nav > li {
  position: relative;
  flex: 0 1 auto;
  min-width: 0;
}

.nav > li > a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  min-height: 48px;
  max-height: 48px;
  padding: 0 clamp(17px, 1.5vw, 31px);
  box-sizing: border-box;
  font-size: clamp(15px, 1.08vw, 17px);
  font-weight: 500;
  line-height: 1;
  color: var(--text-light);
  letter-spacing: 0.045em;
  white-space: nowrap;
  text-align: center;
}
.nav > li > a:hover,
.nav > li > a.active { color: var(--accent); }

.dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 210px;
  background: var(--dark-elevated);
  border: 1px solid rgba(255,255,255,0.08);
  padding: 10px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(6px);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
}
.nav > li:hover .dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}
.dropdown a {
  display: block;
  padding: 12px 17px;
  font-size: 15px;
  color: var(--text-muted);
}
.dropdown a:hover { color: var(--accent); background: rgba(255,255,255,0.04); }

.header-cta {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.2vw, 18px);
  flex-shrink: 0;
}
.header-cta .phone {
  font-size: clamp(15px, 1.1vw, 17px);
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.035em;
  white-space: nowrap;
}

.header-cta .btn {
  height: 48px;
  min-height: 48px;
  max-height: 48px;
  padding: 0 clamp(24px, 2.16vw, 36px);
  font-size: clamp(14px, 1vw, 16px);
  box-sizing: border-box;
}

.header-cta .btn-primary:hover {
  transform: none;
  box-shadow: none;
}

/* Nav optical balance by language length */
html[lang="ko"] .nav > li > a {
  letter-spacing: 0.06em;
}

html[lang="en"] .nav > li > a {
  letter-spacing: 0.032em;
}

html[lang="vi"] .nav > li > a {
  letter-spacing: 0.042em;
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.mobile-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--white);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--black) 0%, var(--dark) 55%, var(--primary) 100%);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: url('../assets/hero-bg.png') center/cover no-repeat;
  opacity: 0.45;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(105deg, rgba(15,35,64,0.88) 0%, rgba(26,51,88,0.72) 45%, rgba(31,73,125,0.35) 100%),
    linear-gradient(to top, rgba(15,35,64,0.95) 0%, transparent 35%);
}

.hero .container {
  position: relative;
  z-index: 1;
  max-width: 900px;
}

.hero-tag {
  display: inline-block;
  font-size: 0.78rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 28px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(75,172,198,0.35);
}

.hero h1 {
  font-family: var(--serif);
  font-size: clamp(2.8rem, 7vw, 4.5rem);
  font-weight: 500;
  line-height: 1.1;
  color: var(--white);
  margin-bottom: 12px;
  letter-spacing: 0.06em;
}

.hero h1 .sub {
  display: block;
  font-size: clamp(14px, 2.5vw, 18px);
  font-family: 'Noto Sans KR', sans-serif;
  font-weight: 400;
  letter-spacing: 0.04em;
  line-height: 1.45;
  color: var(--text-muted);
  margin-top: 18px;
}

.hero p {
  font-size: 1.05rem;
  color: var(--text-light);
  line-height: 1.9;
  margin: 32px 0 44px;
  max-width: 580px;
}

.hero-buttons { display: flex; gap: 14px; flex-wrap: wrap; }

.scroll-indicator {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.scroll-indicator__arrow {
  width: 28px;
  height: 28px;
  animation: scrollArrowBounce 2s ease-in-out infinite;
}

@keyframes scrollArrowBounce {
  0%, 100% { transform: translateY(0); opacity: 0.5; }
  50% { transform: translateY(7px); opacity: 1; }
}

/* ===== Stats ===== */
.stats-bar {
  background: var(--dark);
  padding: 56px 0 88px;
}

.stats-bar .container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  background: transparent;
  border: none;
  border-radius: 0;
  box-shadow: none;
  padding: 0;
}

.stat-item {
  background: rgba(36, 61, 102, 0.72);
  border: 1px solid rgba(79, 129, 189, 0.38);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.14);
  padding: 44px 24px;
  text-align: center;
}

.stat-item .number {
  font-family: var(--serif);
  font-size: 2.6rem;
  font-weight: 600;
  color: var(--accent);
  line-height: 1;
}

.stat-item .label {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 10px;
  letter-spacing: 0.03em;
  line-height: 1.5;
}

/* ===== Cards Grid ===== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  background: transparent;
  margin-top: 52px;
}

.card {
  background: linear-gradient(180deg, var(--white) 0%, #fafbfc 100%);
  padding: 40px 32px;
  transition: all var(--transition);
  box-shadow:
    0 1px 2px rgba(15, 35, 64, 0.05),
    0 8px 28px rgba(15, 35, 64, 0.08);
}

.card:hover {
  background: linear-gradient(180deg, var(--white) 0%, #f6f8fa 100%);
  box-shadow:
    0 2px 6px rgba(15, 35, 64, 0.07),
    0 14px 36px rgba(15, 35, 64, 0.11);
  transform: translateY(-3px);
}

.card-num {
  font-family: var(--serif);
  font-size: 2rem;
  color: var(--accent);
  opacity: 0.6;
  margin-bottom: 16px;
}

.card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--text);
}

.card p {
  font-size: 0.92rem;
  color: var(--gray-600);
  line-height: 1.8;
}

.card .link {
  display: inline-block;
  margin-top: 18px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--primary);
}
.card .link:hover { color: var(--accent-teal); }

/* Business areas — visual cards */
#areas .areas-flow {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 40px;
  flex-wrap: wrap;
}

#areas .areas-flow-step {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  background: var(--white);
  border: 1px solid var(--gray-200);
  box-shadow: 0 4px 14px rgba(15, 35, 64, 0.06);
}

#areas .areas-flow-label {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--primary);
}

#areas .areas-flow-chips {
  display: flex;
  gap: 6px;
}

#areas .areas-flow-chips span {
  display: inline-grid;
  place-items: center;
  min-width: 30px;
  height: 24px;
  padding: 0 6px;
  font-family: var(--serif);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--white);
  background: var(--accent);
}

#areas .areas-flow-arrow {
  flex: 0 0 36px;
  height: 2px;
  background: var(--accent);
  position: relative;
  opacity: 0.6;
}

#areas .areas-flow-arrow::after {
  content: "";
  position: absolute;
  right: -1px;
  top: -4px;
  border: 5px solid transparent;
  border-left: 7px solid var(--accent);
  border-right: 0;
}

#areas .areas-grid {
  margin-top: 28px;
}

#areas .areas-grid .card {
  display: flex;
  flex-direction: column;
  padding: 0;
  overflow: hidden;
}

#areas .area-media {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: linear-gradient(180deg, #f5f8fb 0%, #e9eef4 100%);
  border-bottom: 1px solid var(--gray-200);
}

#areas .area-media img,
#areas .area-media svg {
  display: block;
  width: 100%;
  height: 100%;
  transition: transform 0.5s ease;
}

#areas .area-media--photo img { object-fit: cover; }

#areas .area-media--chart { background: var(--white); }
#areas .area-media--chart svg { padding: 6px 10px; box-sizing: border-box; }

#areas .areas-grid .card:hover .area-media img,
#areas .areas-grid .card:hover .area-media svg {
  transform: scale(1.05);
}

#areas .area-bar {
  transform-box: fill-box;
  transform-origin: bottom center;
  transition: transform 0.4s ease;
}

#areas .areas-grid .card:hover .area-bar { transform: scaleY(1.04); }

#areas .area-body {
  padding: 24px 26px 28px;
}

#areas .area-body .card-num {
  font-size: 1.4rem;
  margin-bottom: 8px;
}

#areas .area-body h3 {
  font-size: 1.08rem;
  margin-bottom: 8px;
}

#areas .area-body p {
  font-size: 0.86rem;
  line-height: 1.7;
}

@media (max-width: 768px) {
  #areas .areas-flow { gap: 8px; }
  #areas .areas-flow-arrow { display: none; }
  #areas .areas-flow-step { padding: 8px 12px; gap: 8px; }
}

/* Dark cards */
.cards-grid-dark {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 52px;
}

.dark-card {
  background: rgba(36, 61, 102, 0.55);
  border: 1px solid rgba(79, 129, 189, 0.22);
  padding: 36px 28px;
  transition: all var(--transition);
}
.dark-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  background: rgba(36, 61, 102, 0.75);
}
.dark-card h3 { font-size: 1.05rem; margin-bottom: 12px; color: var(--white); }
.dark-card p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.75; }

#vision .dark-card,
#future .dark-card,
#revenue .dark-card,
#control .dark-card,
#charger .dark-card {
  background: linear-gradient(165deg, var(--dark) 0%, var(--primary-deep) 100%);
  border: 1px solid rgba(79, 129, 189, 0.42);
  box-shadow: 0 6px 22px rgba(15, 35, 64, 0.14);
}

#vision .dark-card h3,
#future .dark-card h3,
#revenue .dark-card h3,
#control .dark-card h3,
#charger .dark-card h3 {
  color: var(--white);
}

#vision .dark-card p,
#future .dark-card p,
#revenue .dark-card p,
#control .dark-card p,
#charger .dark-card p {
  color: rgba(255, 255, 255, 0.9);
}

#vision .dark-card:hover,
#future .dark-card:hover,
#revenue .dark-card:hover,
#control .dark-card:hover,
#charger .dark-card:hover {
  background: linear-gradient(165deg, var(--primary-deep) 0%, var(--black) 100%);
  border-color: var(--accent);
  box-shadow: 0 14px 36px rgba(15, 35, 64, 0.24);
  transform: translateY(-4px);
}

/* Future expansion — vertical stack */
#future .future-stack {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-top: 40px;
}

#future .future-item {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr)); /* same split as .org-grid */
  gap: 24px;
  align-items: stretch;
}

#future .future-item-body {
  order: 1;
}

#future .future-item-media {
  order: 2;
}

#future .future-item-media {
  margin: 0;
  aspect-ratio: 12 / 7;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.25);
  line-height: 0;
  background: #f4f6f8;
  transition: transform var(--transition), box-shadow var(--transition);
}

#future .future-item:hover .dark-card {
  background: linear-gradient(165deg, var(--primary-deep) 0%, var(--black) 100%);
  border-color: var(--accent);
  box-shadow: 0 14px 36px rgba(15, 35, 64, 0.24);
  transform: translateY(-4px);
}

#future .future-stack .future-item:hover .future-item-media {
  transform: translateY(-4px);
  box-shadow: 0 14px 36px rgba(15, 35, 64, 0.24);
}

#future .future-item:nth-child(1) .future-item-media {
  background: #E8F6FC;
  border-color: rgba(14, 165, 233, 0.35);
  box-shadow: 0 8px 24px rgba(14, 165, 233, 0.12);
}

#future .future-item:nth-child(2) .future-item-media {
  background: #F3EEFF;
  border-color: rgba(139, 92, 246, 0.35);
  box-shadow: 0 8px 24px rgba(139, 92, 246, 0.12);
}

#future .future-item:nth-child(3) .future-item-media {
  background: #ECFDF3;
  border-color: rgba(34, 197, 94, 0.35);
  box-shadow: 0 8px 24px rgba(34, 197, 94, 0.12);
}

#future .future-item:nth-child(4) .future-item-media {
  background: #FFFBEB;
  border-color: rgba(245, 158, 11, 0.35);
  box-shadow: 0 8px 24px rgba(245, 158, 11, 0.12);
}

#future .future-item:nth-child(5) .future-item-media {
  background: #FFF1F5;
  border-color: rgba(244, 63, 94, 0.35);
  box-shadow: 0 8px 24px rgba(244, 63, 94, 0.12);
}

#future .future-item-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

#future .future-item-body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 32px 28px;
}

#future .future-item-num {
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--accent);
  opacity: 0.55;
  margin-bottom: 10px;
  line-height: 1;
}

#future .future-item:nth-child(1) .future-item-num { color: #38BDF8; opacity: 1; }
#future .future-item:nth-child(2) .future-item-num { color: #A78BFA; opacity: 1; }
#future .future-item:nth-child(3) .future-item-num { color: #4ADE80; opacity: 1; }
#future .future-item:nth-child(4) .future-item-num { color: #FBBF24; opacity: 1; }
#future .future-item:nth-child(5) .future-item-num { color: #FB7185; opacity: 1; }

#future .future-item-body h3 {
  font-size: 1.15rem;
  margin-bottom: 12px;
}

#future .future-item-body p {
  margin: 0;
}

@media (max-width: 768px) {
  #future .future-item {
    grid-template-columns: 1fr;
    gap: 0;
  }

  #future .future-item-body {
    order: 2;
  }

  #future .future-item-media {
    order: 1;
  }

  #future .future-item-body {
    padding: 28px 22px;
  }
}

/* Vision triangle layout */
#vision.section {
  padding: 44px 0 48px;
}

#vision .section-label {
  margin-bottom: 8px;
  font-size: 0.88rem;
}

#vision .section-title {
  font-size: clamp(1.55rem, 2.6vw, 1.95rem);
  line-height: 1.22;
  margin-bottom: 0;
  min-height: calc(2 * 1.22em);
}

#vision .vision-content {
  display: grid;
  grid-template-columns: minmax(560px, 600px) minmax(0, 1fr);
  gap: 48px;
  align-items: start;
  margin-top: 30px;
}

#vision .vision-triangle {
  position: relative;
  max-width: 600px;
  margin-left: 0;
  margin-right: auto;
  padding: 0;
  align-self: start;
}

#vision .vision-triangle-lines {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
  overflow: visible;
}

#vision .vision-line {
  stroke: rgba(75, 172, 198, 0.72);
  stroke-width: 2;
  stroke-linecap: butt;
}

#vision .vision-triangle-grid {
  --triangle-box-w: 178px;
  --triangle-box-h: 88px;
  --triangle-half-box-w: 89px;
  --triangle-half-box-h: 44px;
  --triangle-side: 380px;
  --triangle-half-side: 190px;
  --triangle-height: 329.09px;
  --triangle-third-height: 109.7px;
  position: relative;
  width: calc(var(--triangle-side) + var(--triangle-box-w));
  max-width: 600px;
  height: calc(var(--triangle-height) + var(--triangle-box-h));
  margin: 0 auto 0 0;
  min-height: 0;
}

#vision .vision-box,
#vision .vision-logo {
  background: linear-gradient(165deg, var(--dark) 0%, var(--primary-deep) 100%);
  border: 1px solid rgba(79, 129, 189, 0.42);
  box-shadow:
    0 8px 28px rgba(15, 35, 64, 0.18),
    0 0 40px rgba(75, 172, 198, 0.14);
  transition: all var(--transition);
  box-sizing: border-box;
}

#vision .vision-box {
  position: absolute;
  z-index: 2;
  width: var(--triangle-box-w);
  height: var(--triangle-box-h);
  padding: 16px 14px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  overflow: hidden;
}

#vision .vision-box--top {
  left: calc(var(--triangle-half-box-w) + var(--triangle-half-side));
  top: var(--triangle-half-box-h);
  transform: translate(-50%, -50%);
}

#vision .vision-box--left {
  left: var(--triangle-half-box-w);
  top: calc(var(--triangle-half-box-h) + var(--triangle-height));
  transform: translate(-50%, -50%);
}

#vision .vision-box--right {
  left: calc(var(--triangle-half-box-w) + var(--triangle-side));
  top: calc(var(--triangle-half-box-h) + var(--triangle-height));
  transform: translate(-50%, -50%);
}

#vision .vision-box.is-placed {
  transform: translate(-50%, -50%);
}

#vision .vision-box.is-placed:hover {
  transform: translate(-50%, calc(-50% - 4px));
}

#vision .vision-box h3 {
  font-size: 0.94rem;
  margin-bottom: 0;
  line-height: 1.35;
  max-width: 100%;
}

html[lang="vi"] #vision .vision-box h3 {
  font-size: 0.96rem;
  line-height: 1.32;
  letter-spacing: -0.01em;
}

html[lang="en"] #vision .vision-box h3 {
  font-size: 0.98rem;
  line-height: 1.32;
}

#vision .vision-box p {
  font-size: 0.78rem;
  line-height: 1.55;
}

#vision .vision-box:hover,
#vision .vision-logo:hover {
  background: linear-gradient(165deg, var(--primary-deep) 0%, var(--black) 100%);
  border-color: var(--accent);
  box-shadow:
    0 14px 36px rgba(15, 35, 64, 0.24),
    0 0 48px rgba(75, 172, 198, 0.2);
}

#vision .vision-logo {
  position: absolute;
  z-index: 2;
  width: 136px;
  height: 136px;
  padding: 26px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: auto;
  overflow: hidden;
  left: calc(var(--triangle-half-box-w) + var(--triangle-half-side));
  top: calc(var(--triangle-half-box-h) + var(--triangle-third-height));
  transform: translate(-50%, -50%);
}

#vision .vision-logo.is-placed {
  transform: translate(-50%, -50%);
}

#vision .vision-logo.is-placed:hover {
  transform: translate(-50%, calc(-50% - 4px));
}

#vision .vision-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

#vision .vision-line-static {
  position: absolute;
  z-index: 1;
  display: block;
  width: var(--triangle-side);
  height: 2px;
  background: rgba(75, 172, 198, 0.72);
  transform-origin: left center;
  pointer-events: none;
}

#vision .vision-line-static--left {
  left: calc(var(--triangle-half-box-w) + var(--triangle-half-side));
  top: var(--triangle-half-box-h);
  transform: rotate(120deg);
}

#vision .vision-line-static--right {
  left: calc(var(--triangle-half-box-w) + var(--triangle-half-side));
  top: var(--triangle-half-box-h);
  transform: rotate(60deg);
}

#vision .vision-line-static--base {
  left: var(--triangle-half-box-w);
  top: calc(var(--triangle-half-box-h) + var(--triangle-height));
}

#vision .vision-box.is-placed ~ .vision-line-static {
  display: none;
}

#vision .vision-details {
  display: flex;
  flex-direction: column;
  gap: 18px;
  max-width: 540px;
}

#vision .vision-detail {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  padding: 20px 18px 22px;
  margin: 0 -18px;
  border: 1px solid transparent;
  border-radius: 10px;
  transition: transform var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

#vision .vision-detail:not(:last-child) {
  border-bottom: 1px solid rgba(75, 172, 198, 0.24);
}

#vision .vision-detail:first-child {
  border-top: 1px solid rgba(75, 172, 198, 0.24);
}

#vision .vision-content:has(.vision-box--top:hover) .vision-detail[data-vision-for="top"],
#vision .vision-content:has(.vision-box--left:hover) .vision-detail[data-vision-for="left"],
#vision .vision-content:has(.vision-box--right:hover) .vision-detail[data-vision-for="right"],
#vision .vision-content:has(.vision-logo:hover) .vision-detail {
  transform: translateY(-4px);
  background: linear-gradient(165deg, var(--primary-deep) 0%, var(--black) 100%);
  border-color: var(--accent);
  box-shadow:
    0 14px 36px rgba(15, 35, 64, 0.24),
    0 0 48px rgba(75, 172, 198, 0.16);
}

#vision .vision-content:has(.vision-box--top:hover) .vision-detail[data-vision-for="top"] p,
#vision .vision-content:has(.vision-box--left:hover) .vision-detail[data-vision-for="left"] p,
#vision .vision-content:has(.vision-box--right:hover) .vision-detail[data-vision-for="right"] p,
#vision .vision-content:has(.vision-logo:hover) .vision-detail p {
  color: rgba(255, 255, 255, 0.96);
}

#vision .vision-content:has(.vision-box--top:hover) .vision-detail[data-vision-for="top"] .vision-detail-num,
#vision .vision-content:has(.vision-box--left:hover) .vision-detail[data-vision-for="left"] .vision-detail-num,
#vision .vision-content:has(.vision-box--right:hover) .vision-detail[data-vision-for="right"] .vision-detail-num,
#vision .vision-content:has(.vision-logo:hover) .vision-detail .vision-detail-num {
  opacity: 1;
}

#vision .vision-detail-num {
  font-family: var(--serif);
  font-size: 1.15rem;
  line-height: 1;
  color: var(--accent);
  opacity: 0.82;
  transition: opacity var(--transition);
}

#vision .vision-detail > div {
  min-width: 0;
}

#vision .vision-detail h3 {
  color: var(--white);
  font-size: 1rem;
  margin-bottom: 8px;
}

#vision .vision-detail p {
  color: rgba(255, 255, 255, 0.86);
  font-size: 0.86rem;
  line-height: 1.75;
  margin: 0;
  overflow-wrap: anywhere;
  transition: color var(--transition);
}

@media (max-width: 1024px) {
  #vision .vision-content {
    grid-template-columns: minmax(450px, 480px) minmax(0, 1fr);
    gap: 32px;
  }

  #vision .vision-box {
    padding: 14px 12px;
  }

  html[lang="vi"] #vision .vision-box h3 {
    font-size: 0.90rem;
  }

  html[lang="en"] #vision .vision-box h3 {
    font-size: 0.92rem;
  }

  #vision .vision-triangle-grid {
    --triangle-box-w: 160px;
    --triangle-box-h: 82px;
    --triangle-half-box-w: 80px;
    --triangle-half-box-h: 41px;
    --triangle-side: 320px;
    --triangle-half-side: 160px;
    --triangle-height: 277.13px;
    --triangle-third-height: 92.38px;
  }

  #vision .vision-logo {
    width: 120px;
    height: 120px;
    padding: 24px;
  }
}

@media (max-height: 820px) {
  #vision.section {
    padding: 32px 0 36px;
  }

  #vision .vision-triangle {
    margin-top: 0;
  }

}

@media (max-width: 768px) {
  #vision .vision-content {
    grid-template-columns: 1fr;
    gap: 30px;
    margin-top: 26px;
  }

  #vision .vision-triangle {
    max-width: none;
    margin-right: 0;
  }

  #vision .vision-triangle-grid {
    height: auto !important;
    width: 100% !important;
  }

  #vision .vision-triangle-lines,
  #vision .vision-line-static {
    display: none;
  }

  #vision .vision-triangle-grid {
    height: auto;
    min-height: 0;
    display: flex;
    flex-direction: column;
    gap: 24px;
    align-items: center;
  }

  #vision .vision-box--top { order: 1; }
  #vision .vision-logo { order: 2; }
  #vision .vision-box--left { order: 3; }
  #vision .vision-box--right { order: 4; }

  #vision .vision-box,
  #vision .vision-logo {
    position: static;
    transform: none;
    width: 100%;
    max-width: 440px;
  }

  #vision .vision-box {
    height: auto;
    min-height: 82px;
  }

  #vision .vision-logo {
    width: 144px;
    height: 144px;
    max-width: none;
  }

  #vision .vision-box.is-placed,
  #vision .vision-logo.is-placed {
    transform: none;
  }

  #vision .vision-box.is-placed:hover,
  #vision .vision-logo.is-placed:hover {
    transform: translateY(-4px);
  }
}

/* ===== Tabs ===== */
.tabs { display: flex; gap: 0; margin: 44px 0 0; border-bottom: 1px solid rgba(255,255,255,0.1); flex-wrap: wrap; }
.tab-btn {
  padding: 14px 24px;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition);
  margin-bottom: -1px;
}
.tab-btn.active,
.tab-btn:hover { color: var(--accent); border-bottom-color: var(--accent); }

.tab-content { display: none; padding-top: 40px; }
.tab-content.active { display: block; }

/* ===== Products: charger ===== */
#charger .charger-count {
  margin-top: 28px;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--primary);
}

#charger .charger-lineup {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 28px;
}

#charger .charger-card {
  padding: 0;
  overflow: hidden;
  text-align: left;
  cursor: pointer;
  width: 100%;
  font: inherit;
  transition: all var(--transition);
}

#charger .charger-card.active {
  border-color: var(--accent);
  box-shadow:
    0 8px 28px rgba(15, 35, 64, 0.18),
    0 0 40px rgba(75, 172, 198, 0.14);
}

#charger .charger-card-badge {
  display: inline-block;
  margin-bottom: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(75, 172, 198, 0.16);
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

#charger .tab-content {
  padding-top: 28px;
}

#charger .charger-detail-head {
  margin-bottom: 20px;
}

#charger .charger-detail-head h3 {
  font-family: var(--serif);
  font-size: clamp(1.45rem, 2.2vw, 1.85rem);
  color: var(--primary);
  margin-bottom: 8px;
}

#charger .charger-detail-head p {
  color: var(--gray-600);
  font-size: 0.92rem;
}

#charger .charger-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

#charger .charger-spec-panel {
  border: 1px solid var(--gray-200);
  padding: 28px 24px;
  background: var(--white);
  transition: border-color var(--transition);
}

#charger .charger-spec-panel:hover {
  border-color: var(--accent);
}

#charger .charger-features h4,
#charger .charger-spec-panel h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 18px;
}

#charger .charger-features h4 {
  color: var(--white);
}

#charger .charger-spec-panel h4 {
  color: var(--primary);
}

#charger .charger-feature-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

#charger .charger-feature-list li {
  position: relative;
  padding: 0 0 12px 18px;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--white);
}

#charger .charger-feature-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 1.15em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  transform: translateY(-50%);
}

#charger .charger-spec-table {
  width: 100%;
  border-collapse: collapse;
}

#charger .charger-spec-table th,
#charger .charger-spec-table td {
  padding: 14px 16px;
  border: 1px solid var(--gray-200);
  vertical-align: top;
  line-height: 1.7;
  font-size: 0.88rem;
}

#charger .charger-spec-table th {
  width: 30%;
  background: var(--gray-100);
  color: var(--primary);
  font-weight: 600;
  text-align: left;
}

#charger .charger-spec-table td {
  color: var(--gray-600);
}

/* ===== Parking Control (products) ===== */
#control .control-count {
  margin-top: 56px;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--primary);
}

#control .control-tabs {
  margin-top: 16px;
  border-bottom: 1px solid var(--gray-200);
}

#control .control-tabs .tab-btn {
  color: var(--gray-600);
}

#control .control-tabs .tab-btn.active,
#control .control-tabs .tab-btn:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

#control .tab-content {
  padding-top: 28px;
}

#control .control-group-desc {
  margin-bottom: 28px;
  max-width: 760px;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--gray-600);
}

#control > .container > .section-desc {
  max-width: none;
}

#control .control-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

#control .control-card {
  position: relative;
}

#control .control-card-model {
  display: inline-block;
  margin-bottom: 14px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(75, 172, 198, 0.16);
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

#control .control-card,
#guidance .guidance-card,
#control .cards-grid-dark .dark-card,
#guidance .cards-grid-dark .dark-card {
  padding: 0;
  overflow: hidden;
}

#control .control-card .product-card-body,
#guidance .guidance-card .product-card-body,
#control .cards-grid-dark .dark-card .product-card-body,
#guidance .cards-grid-dark .dark-card .product-card-body {
  padding: 24px 28px 32px;
}

.product-card-media {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 168px;
  padding: 28px 24px;
  background: rgba(255, 255, 255, 0.97);
  border-bottom: 1px solid rgba(79, 129, 189, 0.14);
}

#control .cards-grid-dark .product-card-media,
#guidance .cards-grid-dark .product-card-media {
  min-height: 140px;
  padding: 22px 20px;
}

.product-card-media img {
  width: 100%;
  max-height: 148px;
  object-fit: contain;
  display: block;
  transition: transform var(--transition);
}

#control .cards-grid-dark .product-card-media img,
#guidance .cards-grid-dark .product-card-media img {
  max-height: 112px;
}

.dark-card:hover .product-card-media img {
  transform: scale(1.04);
}

#charger .charger-card .product-card-body {
  padding: 20px 24px 28px;
}

#charger .charger-card .product-card-media {
  min-height: 130px;
  padding: 20px;
}

#charger .charger-card .product-card-media img {
  max-height: 110px;
}

.charger-detail-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 32px;
  padding: 36px 28px;
  background: rgba(255, 255, 255, 0.97);
  border: 1px solid rgba(79, 129, 189, 0.22);
}

.charger-detail-visual img {
  width: 100%;
  max-width: 280px;
  max-height: 340px;
  object-fit: contain;
}

/* ===== Parking Guidance (products) ===== */
#guidance .guidance-count {
  margin-top: 56px;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--accent);
}

#guidance .guidance-tabs {
  margin-top: 16px;
}

#guidance .tab-content {
  padding-top: 28px;
}

#guidance .guidance-group-desc {
  margin-bottom: 28px;
  max-width: 760px;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--text-muted);
}

#guidance .guidance-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

#guidance .guidance-card {
  position: relative;
}

#guidance .guidance-card-model {
  display: inline-block;
  margin-bottom: 14px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(75, 172, 198, 0.16);
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.solution-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.solution-panel h3 {
  font-family: var(--serif);
  font-size: 1.8rem;
  margin-bottom: 18px;
  color: var(--white);
}
.solution-panel p { color: var(--text-muted); line-height: 1.85; margin-bottom: 24px; }

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 9px 0;
  font-size: 0.92rem;
  color: var(--text-light);
}
.feature-list li::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--accent);
  margin-top: 9px;
  flex-shrink: 0;
}

.panel-image {
  aspect-ratio: 4/3;
  background: rgba(36, 61, 102, 0.45);
  border: 1px solid rgba(79, 129, 189, 0.2);
  overflow: hidden;
}
.panel-image img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(30%); }

/* ===== Market / Issue block ===== */
.issue-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-top: 48px;
}

.issue-stat {
  padding: 32px;
  background: rgba(36, 61, 102, 0.5);
  border: 1px solid rgba(79, 129, 189, 0.2);
  border-left: 3px solid var(--accent);
  margin-bottom: 20px;
}
.issue-stat .num {
  font-family: var(--serif);
  font-size: 2.8rem;
  color: var(--accent);
  line-height: 1;
}
.issue-stat .txt {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-top: 10px;
  line-height: 1.6;
}

/* ===== Projects ===== */
#major .major-visual {
  margin: 36px auto 0;
  max-width: 920px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--gray-200);
  box-shadow: 0 12px 32px rgba(15, 35, 64, 0.08);
  line-height: 0;
  background: var(--white);
}

#major .major-visual img {
  display: block;
  width: 100%;
  height: auto;
}

#major .project-grid {
  margin-top: 40px;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.project-card {
  border: 1px solid var(--gray-200);
  padding: 36px;
  transition: all var(--transition);
}
.project-card:hover { border-color: var(--accent); box-shadow: var(--shadow); }
.project-card .tag {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-teal);
  margin-bottom: 12px;
}
.project-card h3 { font-size: 1.2rem; margin-bottom: 14px; }
.project-card p { font-size: 0.9rem; color: var(--gray-600); line-height: 1.75; }
.project-card ul { margin-top: 16px; }
.project-card li {
  font-size: 0.88rem;
  color: var(--gray-600);
  padding: 5px 0 5px 16px;
  position: relative;
}
.project-card li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* ===== Revenue ===== */
.revenue-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 48px;
}

.revenue-item {
  text-align: center;
  padding: 36px 20px;
  background: var(--white);
  border: 1px solid var(--gray-200);
}
.revenue-item .icon { font-size: 1.8rem; margin-bottom: 16px; }
.revenue-item h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 10px; }
.revenue-item p { font-size: 0.85rem; color: var(--gray-600); line-height: 1.65; }

/* ===== Philosophy ===== */
.philosophy-block {
  text-align: center;
  max-width: 820px;
  margin: 0 auto;
}
.philosophy-block blockquote {
  font-family: var(--serif);
  font-size: clamp(1.3rem, 3vw, 1.75rem);
  font-weight: 500;
  line-height: 1.7;
  color: var(--white);
  margin: 32px 0 20px;
}
.philosophy-block .quote-sub {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.8;
}

.values-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-top: 56px;
}

.value-box {
  padding: 28px 16px;
  border: 1px solid rgba(79, 129, 189, 0.22);
  text-align: center;
  transition: all var(--transition);
  background: rgba(36, 61, 102, 0.35);
}
.value-box:hover { border-color: var(--accent); background: rgba(36, 61, 102, 0.55); }
.value-box h4 { font-size: 0.88rem; font-weight: 700; color: var(--accent); margin-bottom: 8px; letter-spacing: 0.04em; }
.value-box p { font-size: 0.8rem; color: var(--text-muted); line-height: 1.6; }

/* ===== Contact ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 56px;
  margin-top: 48px;
}

#location .location-map {
  overflow: hidden;
  border: 1px solid var(--gray-200);
  aspect-ratio: 16 / 9;
  box-shadow: 0 12px 32px rgba(15, 35, 64, 0.08);
}

#location .location-map iframe {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 280px;
  border: 0;
}

.info-item {
  display: flex;
  gap: 18px;
  margin-bottom: 28px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--gray-200);
}
.info-item:last-child { border-bottom: none; }
.info-item .label {
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: 6px;
}
.info-item .value {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.6;
}

.contact-form {
  background: var(--white);
  border: 1px solid var(--gray-200);
  padding: 44px;
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: 0.03em;
}
.form-group label .req { color: #c0504d; }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 13px 16px;
  border: 1px solid var(--gray-200);
  border-radius: 0;
  font-size: 0.92rem;
  font-family: inherit;
  background: var(--gray-100);
  transition: border-color var(--transition);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--white);
}
.form-group textarea { resize: vertical; min-height: 130px; }
.form-check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--gray-600);
  margin-bottom: 24px;
}
.form-check input { margin-top: 4px; }

.contact-form-honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.form-status {
  margin-bottom: 16px;
  padding: 12px 14px;
  font-size: 0.88rem;
  line-height: 1.5;
  border: 1px solid var(--gray-200);
  background: var(--gray-100);
}

.form-status--loading {
  color: var(--primary);
  border-color: rgba(75, 172, 198, 0.35);
  background: rgba(75, 172, 198, 0.08);
}

.form-status--success {
  color: #1f5f3a;
  border-color: rgba(34, 197, 94, 0.35);
  background: rgba(34, 197, 94, 0.08);
}

.form-status--error {
  color: #8b2e2e;
  border-color: rgba(192, 80, 77, 0.35);
  background: rgba(192, 80, 77, 0.08);
}

.contact-form-submit:disabled {
  opacity: 0.72;
  cursor: not-allowed;
}

/* ===== Page Header ===== */
.page-header {
  background: linear-gradient(135deg, var(--black) 0%, var(--primary) 100%);
  color: var(--white);
  padding: 90px 0 70px;
  position: relative;
  overflow: hidden;
}
.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('../assets/gradient.png') right center/cover no-repeat;
  opacity: 0.28;
}
.page-header::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(15,35,64,0.85) 0%, rgba(31,73,125,0.4) 100%);
}
.page-header .container { position: relative; z-index: 1; }
.page-header h1 {
  font-family: var(--serif);
  font-size: clamp(2.2rem, 5vw, 3rem);
  font-weight: 500;
  letter-spacing: 0.06em;
  margin-bottom: 14px;
}
.breadcrumb {
  display: flex;
  gap: 10px;
  font-size: 0.82rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}
.breadcrumb a:hover { color: var(--accent); }

/* ===== About ===== */
.about-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-image {
  aspect-ratio: 4/5;
  overflow: hidden;
  border: 1px solid var(--gray-200);
}
.about-image img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(20%); }

.company-table {
  width: 100%;
  margin-top: 40px;
  border-collapse: collapse;
}
.company-table th,
.company-table td {
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid var(--gray-200);
  font-size: 0.92rem;
}
.company-table th {
  width: 140px;
  font-weight: 600;
  color: var(--gray-400);
  letter-spacing: 0.04em;
  background: var(--gray-100);
}

.org-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.org-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--gray-200);
  padding: 0;
  text-align: left;
  transition: all var(--transition);
  overflow: hidden;
  background: var(--white);
}

.org-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 14px 36px rgba(15, 35, 64, 0.1);
}

.org-card-media {
  position: relative;
  margin: 0;
  padding: 0;
  line-height: 0;
  aspect-ratio: 12 / 7;
  overflow: hidden;
  border-bottom: 1px solid var(--gray-200);
}

.org-card-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.org-card-body {
  padding: 24px 26px 28px;
}

.org-card-num {
  display: inline-block;
  margin-bottom: 10px;
  font-family: var(--serif);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--accent);
}

#org .org-card:nth-child(1) .org-card-num { color: #8B5CF6; }
#org .org-card:nth-child(2) .org-card-num { color: #F472B6; }
#org .org-card:nth-child(3) .org-card-num { color: #0EA5E9; }
#org .org-card:nth-child(4) .org-card-num { color: #D97706; }

.org-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--primary);
}

.org-card p {
  font-size: 0.88rem;
  color: var(--gray-600);
  line-height: 1.7;
  margin: 0;
}

/* ===== Solution list page ===== */
.solution-row {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 36px;
  padding: 44px 0;
  border-bottom: 1px solid var(--gray-200);
}
.solution-row:first-child { border-top: 1px solid var(--gray-200); }
.solution-num {
  font-family: var(--serif);
  font-size: 2.2rem;
  color: var(--accent);
  opacity: 0.5;
}
.solution-row h3 { font-size: 1.35rem; margin-bottom: 14px; }
.solution-row p { color: var(--gray-600); line-height: 1.85; margin-bottom: 0; }

.solution-row-content {
  min-width: 0;
}

.solution-row-body h3 { font-size: 1.35rem; margin-bottom: 14px; }
.solution-row-body p { color: var(--gray-600); line-height: 1.85; margin-bottom: 0; }

#business .solution-row {
  padding: 36px 0;
  align-items: center;
}

#business .solution-row-content {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 480px);
  gap: 40px;
  align-items: center;
}

#business .solution-row-body p { line-height: 2; }

#business .solution-row-media {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--gray-200);
  box-shadow: 0 4px 20px rgba(15, 35, 64, 0.06);
  line-height: 0;
  background: var(--white);
}

#business .solution-row-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
}

#process .process-layout {
  display: grid;
  grid-template-columns: minmax(260px, 38%) minmax(0, 62%);
  gap: 40px;
  align-items: center;
  margin-top: 44px;
}

#process .process-steps {
  max-width: none;
  padding-top: 4px;
}

#process .process-step {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 20px;
  padding: 22px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

#process .process-step:first-child {
  padding-top: 0;
}

#process .process-step:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

#process .process-step-num {
  font-family: var(--serif);
  font-size: 1.65rem;
  font-weight: 600;
  color: var(--accent);
  opacity: 0.7;
  line-height: 1;
  padding-top: 3px;
}

#process .process-step-body h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
  color: var(--white);
}

#process .process-step-body p {
  margin: 0;
  color: var(--text-muted);
  line-height: 1.8;
  font-size: 0.94rem;
}

#process .process-visual {
  margin: 0;
  max-width: none;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(79, 129, 189, 0.28);
  box-shadow:
    0 16px 48px rgba(0, 0, 0, 0.32),
    0 0 0 1px rgba(75, 172, 198, 0.06);
  line-height: 0;
  background: rgba(15, 35, 64, 0.45);
}

#process .process-visual img {
  display: block;
  width: 100%;
  height: auto;
}

.tag-list { display: flex; gap: 8px; flex-wrap: wrap; }
.tag {
  padding: 5px 14px;
  background: var(--gray-100);
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.tech-table {
  width: 100%;
  margin-top: 48px;
  border-collapse: collapse;
}
.tech-table th {
  background: var(--primary);
  color: var(--white);
  padding: 16px 20px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-align: left;
}
.tech-table td {
  padding: 18px 20px;
  border-bottom: 1px solid var(--gray-200);
  font-size: 0.9rem;
  vertical-align: top;
  line-height: 1.7;
}
.tech-table tr:nth-child(even) td { background: var(--gray-100); }

.section[id] {
  scroll-margin-top: 100px;
}

/* Soft section break: CEO Message → Vision & Mission */
#ceo.section-stripe-light {
  position: relative;
  padding: 48px 0 104px;
  box-shadow: 0 22px 44px -24px rgba(15, 35, 64, 0.24);
}

#ceo .container {
  max-width: 1420px;
}

#ceo .ceo-message-head .section-label {
  font-size: 1rem;
  margin-bottom: 12px;
}

#ceo .ceo-message-head .section-title {
  font-size: clamp(2.15rem, 4.8vw, 2.95rem);
  line-height: 1.25;
  margin-bottom: 18px;
}

#ceo .ceo-message-desc {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

#ceo .ceo-message-paragraphs {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

#ceo .ceo-message-paragraphs p {
  margin: 0;
  font-size: 1.08rem;
  line-height: 1.68;
  max-width: none;
  color: var(--gray-600);
}

#ceo .about-split {
  grid-template-columns: 600px minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}

#ceo .ceo-message-text {
  min-width: 0;
  height: calc(600px * 682 / 1024);
  display: flex;
  flex-direction: column;
}

#ceo .ceo-message-head {
  flex-shrink: 0;
}

#ceo .ceo-message-sign {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--primary);
  margin: 0;
  margin-top: auto;
  padding-top: 24px;
  flex-shrink: 0;
}

#ceo .about-image {
  aspect-ratio: auto;
  overflow: visible;
  border: none;
  line-height: 0;
  width: 600px;
  max-width: 100%;
  align-self: start;
  flex-shrink: 0;
}

#ceo .about-image img {
  display: block;
  width: 100%;
  max-width: 600px;
  height: auto;
  object-fit: contain;
  filter: none;
}

@media (max-width: 1200px) {
  #ceo .about-split {
    grid-template-columns: minmax(0, 58%) minmax(0, 1fr);
    gap: 32px;
    align-items: start;
  }

  #ceo .about-image {
    width: 100%;
  }

  #ceo .ceo-message-text {
    height: auto;
  }

  #ceo .ceo-message-desc {
    flex: initial;
  }

  #ceo .ceo-message-paragraphs {
    flex: initial;
    justify-content: flex-start;
    gap: 1.25em;
  }
}

@media (max-width: 1024px) {
  #ceo .about-split {
    justify-items: center;
    align-items: start;
  }

  #ceo .about-image {
    max-width: min(100%, 600px);
    margin: 0 auto;
  }

  #ceo .ceo-message-text {
    width: 100%;
  }
}

#ceo.section-stripe-light::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 72px;
  pointer-events: none;
  background: linear-gradient(
    to bottom,
    rgba(15, 35, 64, 0) 0%,
    rgba(15, 35, 64, 0.08) 50%,
    rgba(15, 35, 64, 0.16) 100%
  );
}

#org.section-stripe-light {
  box-shadow: inset 0 32px 56px -32px rgba(15, 35, 64, 0.18);
}

#location.section-stripe-light {
  box-shadow: inset 0 32px 56px -32px rgba(15, 35, 64, 0.18);
}

/* CTA block — visual break from content section above */
.section-cta {
  position: relative;
  box-shadow: inset 0 32px 56px -32px rgba(15, 35, 64, 0.18);
}

.section-stripe-dark:has(+ .section-cta),
.section-dark:has(+ .section-cta) {
  position: relative;
  box-shadow: 0 22px 44px -24px rgba(0, 0, 0, 0.35);
}

.section-stripe-dark:has(+ .section-cta)::after,
.section-dark:has(+ .section-cta)::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 72px;
  pointer-events: none;
  background: linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0) 0%,
    rgba(0, 0, 0, 0.18) 55%,
    rgba(0, 0, 0, 0.32) 100%
  );
}

.section-stripe-light:has(+ .section-cta),
.section-light:has(+ .section-cta):not(.section-cta) {
  position: relative;
  box-shadow: 0 22px 44px -24px rgba(15, 35, 64, 0.24);
}

.section-stripe-light:has(+ .section-cta)::after,
.section-light:has(+ .section-cta):not(.section-cta)::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 72px;
  pointer-events: none;
  background: linear-gradient(
    to bottom,
    rgba(15, 35, 64, 0) 0%,
    rgba(15, 35, 64, 0.08) 50%,
    rgba(15, 35, 64, 0.16) 100%
  );
}

/* Soft section break: last section → Footer (all pages) */
.section-light:has(+ .footer),
.section-stripe-light:has(+ .footer) {
  position: relative;
  box-shadow: 0 22px 44px -24px rgba(15, 35, 64, 0.24);
}

.section-light:has(+ .footer)::after,
.section-stripe-light:has(+ .footer)::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 72px;
  pointer-events: none;
  background: linear-gradient(
    to bottom,
    rgba(15, 35, 64, 0) 0%,
    rgba(15, 35, 64, 0.08) 50%,
    rgba(15, 35, 64, 0.16) 100%
  );
}

.section-light:has(+ .footer) + .footer,
.section-stripe-light:has(+ .footer) + .footer {
  box-shadow: inset 0 32px 56px -32px rgba(15, 35, 64, 0.18);
}

.section-dark:has(+ .footer),
.section-stripe-dark:has(+ .footer) {
  position: relative;
  box-shadow: 0 24px 48px -20px rgba(0, 0, 0, 0.42);
}

.section-dark:has(+ .footer)::after,
.section-stripe-dark:has(+ .footer)::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 80px;
  pointer-events: none;
  background: linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0) 0%,
    rgba(0, 0, 0, 0.18) 55%,
    rgba(0, 0, 0, 0.32) 100%
  );
}

.section-dark:has(+ .footer) + .footer,
.section-stripe-dark:has(+ .footer) + .footer {
  box-shadow: inset 0 32px 56px -28px rgba(0, 0, 0, 0.38);
}

/* ===== Footer ===== */
.footer {
  background: linear-gradient(180deg, var(--dark) 0%, var(--black) 100%);
  color: var(--text-muted);
  padding: 64px 0 0;
  border-top: 1px solid rgba(79, 129, 189, 0.2);
}

.footer .container {
  width: 80%;
  max-width: 1520px;
  margin: 0 auto;
  padding: 0 12px;
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(5, minmax(0, 1fr));
  gap: clamp(24px, 3vw, 48px);
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-brand img {
  height: var(--logo-height);
  width: auto;
  margin-bottom: 24px;
}
.footer-brand p { font-size: 0.88rem; line-height: 1.75; max-width: 280px; }

.footer h4 {
  color: var(--white);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 0.86rem; }
.footer-links a:hover { color: var(--accent); }

.footer-bottom {
  padding: 24px 0;
  font-size: 0.78rem;
  line-height: 1.7;
  letter-spacing: 0.02em;
}

/* ===== Float CTA ===== */
.float-cta {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.float-btn {
  width: 52px;
  height: 52px;
  border: 1px solid rgba(79, 129, 189, 0.35);
  background: var(--primary);
  color: var(--white);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: all var(--transition);
}
.float-btn:hover { background: var(--accent); color: var(--primary-deep); border-color: var(--accent); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .cards-grid, .cards-grid-dark { grid-template-columns: repeat(2, 1fr); }
  #charger .charger-lineup,
  #charger .charger-detail-grid { grid-template-columns: 1fr; }
  #guidance .guidance-grid,
  #control .control-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-bar .container { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .solution-panel, .about-split, .contact-grid, .issue-grid { grid-template-columns: 1fr; }
  .revenue-grid { grid-template-columns: repeat(2, 1fr); }
  .values-row { grid-template-columns: repeat(3, 1fr); }
  .org-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .project-grid { grid-template-columns: 1fr; }
  #business .solution-row-content {
    grid-template-columns: minmax(0, 1fr) minmax(240px, 360px);
    gap: 24px;
  }
  #process .process-layout {
    grid-template-columns: minmax(240px, 42%) minmax(0, 58%);
    gap: 28px;
  }
}

@media (max-width: 768px) {
  .nav { display: none; }
  .header-cta .phone { display: none; }
  .mobile-toggle { display: flex; }
  .nav.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100px; left: 0; right: 0;
    background: var(--dark);
    padding: 16px;
    border-bottom: 1px solid rgba(79, 129, 189, 0.2);
  }
  .nav.mobile-open .dropdown {
    position: static; opacity: 1; visibility: visible; transform: none;
    border: none; padding-left: 16px;
  }
  .section { padding: 72px 0; }
  .stats-bar .container { grid-template-columns: 1fr; gap: 12px; }
  .cards-grid, .cards-grid-dark, .revenue-grid, .values-row, .org-grid { grid-template-columns: 1fr; }
  #guidance .guidance-grid,
  #control .control-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .solution-row { grid-template-columns: 1fr; }
  #business .solution-row-content {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  #business .solution-row-media {
    max-width: 100%;
  }
  #process .process-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  #process .process-visual {
    max-width: none;
  }
}

/* ===== Phone layout (≤768px) ===== */
@media (max-width: 768px) {
  :root {
    --logo-height: 48px;
    --logo-offset-y: 3px;
  }

  .header { height: 64px; }

  .header .container {
    width: 100%;
    height: 64px;
    min-height: 64px;
    max-height: 64px;
    padding: 0 16px;
  }

  .logo { height: 64px; }

  .header-cta { gap: 10px; }
  .header-cta .btn { display: none; } /* contact stays reachable via the floating button */

  .nav.mobile-open {
    top: 64px;
    max-height: calc(100vh - 64px);
    overflow-y: auto;
  }

  .section[id] { scroll-margin-top: 64px; }

  .container { padding: 0 20px; }

  /* Comparison table → stacked cards */
  .tech-table,
  .tech-table tbody,
  .tech-table tr,
  .tech-table td {
    display: block;
    width: 100%;
  }
  .tech-table thead { display: none; }
  .tech-table tr {
    margin-bottom: 14px;
    border: 1px solid var(--gray-200);
    background: var(--white);
  }
  .tech-table tr:nth-child(even) td { background: transparent; }
  .tech-table td {
    border-bottom: none;
    padding: 6px 18px;
  }
  .tech-table td:first-child {
    padding-top: 16px;
    font-size: 1rem;
  }
  .tech-table td:nth-child(2) { color: var(--gray-600); }
  .tech-table td:last-child { padding-bottom: 16px; }
  .tech-table td:last-child::before {
    content: '→ ';
    color: var(--accent);
    font-weight: 700;
  }

  .project-grid { grid-template-columns: minmax(0, 1fr); }
  .project-card {
    padding: 24px 20px;
    overflow-wrap: anywhere;
  }

  .float-cta {
    right: 14px;
    bottom: 14px;
    gap: 8px;
  }
  .float-btn {
    width: 44px;
    height: 44px;
  }
}

/* CEO block: stack image + message instead of the fixed 600px column */
@media (max-width: 1024px) {
  #ceo .about-split { grid-template-columns: minmax(0, 1fr); }
  #ceo .about-image { width: 100%; max-width: 600px; }
  #ceo .ceo-message-text { height: auto; }
  #ceo .ceo-message-paragraphs { gap: 16px; }
}

@media (max-width: 768px) {
  /* let grid items shrink below their content width */
  .cards-grid, .cards-grid-dark, .revenue-grid, .values-row, .org-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .cards-grid > *, .cards-grid-dark > *, .revenue-grid > *, .values-row > *, .org-grid > * {
    min-width: 0;
  }
  .card h3, .dark-card h3, .section-title { overflow-wrap: break-word; }

  .tech-table td { box-sizing: border-box; }
}

@media (max-width: 768px) {
  /* Headings: smaller on phones so Vietnamese keep-together phrases (lang.js) fit;
     overflow-wrap is a last-resort fallback for any phrase still wider than the screen */
  html body .section-title,
  html[lang] body .section-title {
    font-size: clamp(22px, 6.6vw, 30px);
    overflow-wrap: anywhere;
  }
}

@media (max-width: 768px) {
  /* stacked table cards inside dark sections */
  .section-stripe-dark .tech-table tr {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.14);
  }
  .section-stripe-dark .tech-table td:nth-child(2) { color: var(--text-muted); }
}