/* ==========================================================================
   MẮT SÁNG VIỆT NAM – HAPPY IDEM (SINCE 2016)
   Official Clean Static Website — https://matsangvietnam.happyidem.com
   ========================================================================== */

:root {
  --primary: #0B6B8A;
  --primary-dark: #07475E;
  --primary-light: #E8F5FA;
  --accent-orange: #F38B1C;
  --accent-orange-soft: #FFF4E6;
  --emerald: #1F6E50;
  --emerald-soft: #EAF5F0;
  --bg-ivory: #F9FBFD;
  --bg-card: #FFFFFF;
  --text-main: #182B36;
  --text-muted: #526775;
  --border-color: #DCE8F0;
  --shadow-sm: 0 4px 14px rgba(11, 107, 138, 0.06);
  --shadow-md: 0 12px 32px rgba(7, 71, 94, 0.10);
  --shadow-lg: 0 24px 56px rgba(7, 71, 94, 0.14);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-serif: 'Playfair Display', Georgia, serif;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-sans);
  color: var(--text-main);
  background-color: var(--bg-ivory);
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: all 0.22s ease;
}

.container {
  width: 100%;
  max-width: 1220px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Top Bar */
.top-bar {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.84rem;
  padding: 0.5rem 0;
}

.top-bar-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem 1.25rem;
}

.top-bar a {
  color: #fff;
  font-weight: 600;
}

.top-bar a:hover {
  color: var(--accent-orange);
}

.top-bar-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: box-shadow 0.25s ease;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--text-main);
  flex-shrink: 0;
}

.brand-logo {
  width: 46px;
  height: 46px;
  object-fit: contain;
  border-radius: 10px;
  background: #fff;
  padding: 2px;
  border: 1px solid var(--border-color);
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  white-space: nowrap;
}

.brand-title {
  font-weight: 800;
  font-size: 0.98rem;
  color: var(--primary-dark);
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.brand-sub {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--accent-orange);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.hero-grid > *,
.founder-grid > *,
.screening-hero-box > *,
.owner-card > *,
.knowledge-layout > *,
.stage-columns > *,
.company-mission-grid > * {
  min-width: 0;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.1rem;
  list-style: none;
}

.nav-menu a {
  padding: 0.42rem 0.5rem;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--text-main);
  border-radius: 8px;
  white-space: nowrap;
}

.nav-menu a:hover {
  color: var(--primary);
  background: var(--primary-light);
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--primary);
  color: #fff !important;
  padding: 0.52rem 0.95rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.83rem;
  white-space: nowrap;
  flex-shrink: 0;
  box-shadow: 0 6px 16px rgba(11, 107, 138, 0.22);
}

.header-cta:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.5rem 0.65rem;
  cursor: pointer;
  color: var(--primary-dark);
}

/* Hero Section */
.hero {
  position: relative;
  padding: 3.5rem 0 4.5rem;
  background: radial-gradient(circle at 85% 15%, rgba(243, 139, 28, 0.12), transparent 45%),
              linear-gradient(165deg, #F0F8FC 0%, #FFFFFF 55%, #F4FAF7 100%);
  border-bottom: 1px solid var(--border-color);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 2.75rem;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.38rem 0.9rem;
  border-radius: 999px;
  background: var(--primary-light);
  color: var(--primary-dark);
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 1.1rem;
}

.eyebrow-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-orange);
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.1rem, 3.8vw, 3.2rem);
  line-height: 1.18;
  color: var(--primary-dark);
  margin-bottom: 1.15rem;
}

.hero h1 span {
  color: var(--accent-orange);
}

.hero-lead {
  font-size: 1.08rem;
  color: var(--text-muted);
  margin-bottom: 1.65rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-bottom: 2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.5rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  transition: all 0.22s ease;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 10px 24px rgba(11, 107, 138, 0.24);
}

.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
}

.btn-secondary {
  background: #fff;
  color: var(--primary-dark);
  border: 1.5px solid var(--border-color);
}

.btn-secondary:hover {
  border-color: var(--primary);
  background: var(--primary-light);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
}

.stat-item strong {
  display: block;
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--primary-dark);
}

.stat-item span {
  font-size: 0.84rem;
  color: var(--text-muted);
}

.hero-visual {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.hero-cover-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 0.65rem;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
}

.hero-cover-card img {
  border-radius: calc(var(--radius-lg) - 6px);
  width: 100%;
  object-fit: cover;
}

.hero-sub-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.hero-mini-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 0.9rem 1rem;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.hero-mini-card img {
  width: 64px;
  height: 64px;
  border-radius: 12px;
  object-fit: cover;
  flex-shrink: 0;
}

.hero-mini-card div strong {
  display: block;
  font-size: 0.88rem;
  color: var(--primary-dark);
}

.hero-mini-card div span {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* Section Generic */
.section {
  padding: 4.5rem 0;
}

.section-alt {
  background: #FFFFFF;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.section-header {
  max-width: 780px;
  margin: 0 auto 3rem;
  text-align: center;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  color: var(--primary-dark);
  line-height: 1.24;
  margin-bottom: 0.85rem;
}

.section-desc {
  color: var(--text-muted);
  font-size: 1.04rem;
}

/* Founder & Heartfelt Letter Section */
.founder-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 2.5rem;
  align-items: start;
}

.founder-profile-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 96px;
}

.founder-photo-wrap {
  position: relative;
}

.founder-photo-wrap img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.founder-badge {
  position: absolute;
  bottom: 14px;
  left: 14px;
  background: rgba(7, 71, 94, 0.92);
  color: #fff;
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
}

.founder-bio {
  padding: 1.75rem;
}

.founder-bio h3 {
  font-family: var(--font-serif);
  font-size: 1.65rem;
  color: var(--primary-dark);
  margin-bottom: 0.25rem;
}

.founder-role {
  color: var(--accent-orange);
  font-weight: 700;
  font-size: 0.92rem;
  margin-bottom: 1rem;
}

.founder-credentials {
  list-style: none;
  display: grid;
  gap: 0.55rem;
  font-size: 0.93rem;
}

.founder-credentials li {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
}

.founder-credentials li::before {
  content: "✓";
  color: var(--primary);
  font-weight: 800;
}

.letter-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
  position: relative;
}

.letter-card::before {
  content: "“";
  font-family: var(--font-serif);
  font-size: 5rem;
  color: rgba(11, 107, 138, 0.12);
  position: absolute;
  top: 10px;
  right: 28px;
  line-height: 1;
}

.letter-card h3 {
  font-family: var(--font-serif);
  font-size: 1.55rem;
  color: var(--primary-dark);
  margin-bottom: 1rem;
}

.letter-body p {
  margin-bottom: 0.95rem;
  color: var(--text-main);
  font-size: 0.98rem;
}

.letter-highlight {
  background: var(--accent-orange-soft);
  border-left: 4px solid var(--accent-orange);
  padding: 1rem 1.25rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-weight: 600;
  color: var(--primary-dark);
  margin: 1.25rem 0;
}

.letter-signature {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Statistics / Current Situation */
.stats-banner {
  margin-top: 3rem;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-lg);
}

.stats-banner-head {
  max-width: 760px;
  margin-bottom: 2rem;
}

.stats-banner-head h3 {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  margin-bottom: 0.5rem;
}

.stats-banner-head p {
  color: rgba(255, 255, 255, 0.85);
}

.stats-tiers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.tier-box {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}

.tier-tag {
  display: inline-block;
  background: var(--accent-orange);
  color: #fff;
  font-weight: 800;
  font-size: 0.78rem;
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  margin-bottom: 0.75rem;
}

.tier-box h4 {
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
}

.tier-box ul {
  padding-left: 1.1rem;
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.92);
  display: grid;
  gap: 0.5rem;
}

/* Company Overview & 5-Stage Roadmap (2016 - 2045) */
.company-mission-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.75rem;
  margin-bottom: 3rem;
}

.info-panel {
  background: var(--bg-ivory);
  border-radius: var(--radius-lg);
  padding: 2rem;
  border: 1px solid var(--border-color);
}

.info-panel h3 {
  font-size: 1.3rem;
  color: var(--primary-dark);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.info-panel ul {
  list-style: none;
  display: grid;
  gap: 0.75rem;
}

.info-panel ul li {
  position: relative;
  padding-left: 1.5rem;
  font-size: 0.95rem;
}

.info-panel ul li::before {
  content: "●";
  color: var(--accent-orange);
  position: absolute;
  left: 0;
}

.roadmap-timeline {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
}

.roadmap-step {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.4rem;
  box-shadow: var(--shadow-sm);
  position: relative;
  display: flex;
  flex-direction: column;
}

.roadmap-step.active {
  border-color: var(--accent-orange);
  background: var(--accent-orange-soft);
}

.roadmap-year {
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 0.35rem;
}

.roadmap-step h4 {
  font-size: 1.1rem;
  color: var(--primary-dark);
  margin-bottom: 0.6rem;
}

.roadmap-step p {
  font-size: 0.89rem;
  color: var(--text-muted);
}

/* 5 Chặng Đường - 15 Năm Đồng Hành (Gửi Phụ Huynh) */
.stages-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: center;
  margin-bottom: 2rem;
}

.stage-tab-btn {
  padding: 0.75rem 1.25rem;
  border-radius: 999px;
  border: 1.5px solid var(--border-color);
  background: #fff;
  color: var(--text-main);
  font-weight: 700;
  font-size: 0.92rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.stage-tab-btn:hover {
  border-color: var(--primary);
}

.stage-tab-btn.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  box-shadow: 0 8px 20px rgba(11, 107, 138, 0.22);
}

.stage-panel {
  display: none;
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
}

.stage-panel.active {
  display: block;
}

.stage-panel-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.stage-panel-header h3 {
  font-family: var(--font-serif);
  font-size: 1.55rem;
  color: var(--primary-dark);
}

.stage-age-badge {
  background: var(--accent-orange-soft);
  color: var(--accent-orange);
  border: 1px solid rgba(243, 139, 28, 0.35);
  padding: 0.4rem 1rem;
  border-radius: 999px;
  font-weight: 800;
  font-size: 0.9rem;
}

.stage-columns {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 1.75rem;
}

.stage-box {
  background: var(--bg-ivory);
  padding: 1.5rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.stage-box.alert {
  background: #FFF9F2;
  border-color: rgba(243, 139, 28, 0.35);
}

.stage-box h4 {
  color: var(--primary-dark);
  margin-bottom: 0.85rem;
  font-size: 1.05rem;
}

.stage-box ol, .stage-box ul {
  padding-left: 1.25rem;
  display: grid;
  gap: 0.55rem;
  font-size: 0.94rem;
}

/* Screening Service Section (Dịch vụ sàng lọc) */
.screening-hero-box {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2.25rem;
  align-items: center;
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
  margin-bottom: 2.5rem;
}

.device-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 1.1rem 0;
}

.device-specs span {
  background: var(--primary-light);
  color: var(--primary-dark);
  font-size: 0.84rem;
  font-weight: 700;
  padding: 0.35rem 0.8rem;
  border-radius: 8px;
}

.reasons-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

.reason-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 1.6rem;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.reason-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-weight: 800;
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

.reason-card h4 {
  font-size: 1.1rem;
  color: var(--primary-dark);
  margin-bottom: 0.5rem;
}

.reason-card p {
  font-size: 0.93rem;
  color: var(--text-muted);
}

.process-card {
  background: linear-gradient(135deg, #F0F8FC 0%, #EAF5F0 100%);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  border: 1px solid var(--border-color);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.15rem;
  margin-top: 1.5rem;
}

.process-step-item {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 1.35rem;
  border: 1px solid var(--border-color);
}

.process-step-item strong {
  display: block;
  color: var(--primary);
  font-size: 0.85rem;
  text-transform: uppercase;
  margin-bottom: 0.35rem;
}

/* Knowledge Hub (7 Bài Kiến Thức Về Mắt) */
.knowledge-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 2rem;
  align-items: start;
}

.knowledge-nav {
  background: #fff;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  position: sticky;
  top: 96px;
}

.knowledge-btn {
  text-align: left;
  padding: 0.85rem 1rem;
  border-radius: 10px;
  border: none;
  background: transparent;
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.knowledge-btn:hover {
  background: var(--primary-light);
  color: var(--primary-dark);
}

.knowledge-btn.active {
  background: var(--primary);
  color: #fff;
  font-weight: 700;
}

.knowledge-btn .k-badge {
  font-size: 0.75rem;
  padding: 0.18rem 0.5rem;
  border-radius: 6px;
  background: rgba(11, 107, 138, 0.12);
  color: var(--primary-dark);
  flex-shrink: 0;
}

.knowledge-btn.active .k-badge {
  background: rgba(255, 255, 255, 0.22);
  color: #fff;
}

.knowledge-article {
  display: none;
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
}

.knowledge-article.active {
  display: block;
}

.knowledge-article h3 {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  color: var(--primary-dark);
  margin-bottom: 1.25rem;
  padding-bottom: 0.85rem;
  border-bottom: 2px solid var(--primary-light);
}

.knowledge-article h4 {
  font-size: 1.12rem;
  color: var(--primary-dark);
  margin: 1.35rem 0 0.6rem;
}

.knowledge-article p {
  margin-bottom: 0.9rem;
}

.knowledge-article ul, .knowledge-article ol {
  padding-left: 1.35rem;
  margin-bottom: 1rem;
  display: grid;
  gap: 0.5rem;
}

.handbook-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.15rem;
  margin-top: 1rem;
}

.handbook-box {
  background: var(--bg-ivory);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.handbook-box h4 {
  margin-top: 0;
  color: var(--primary);
}

.video-embed {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: var(--radius-md);
  margin-top: 1rem;
  background: #000;
}

.video-embed iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* Gallery & Team Section */
.gallery-filter {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 2rem;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.gallery-card {
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.gallery-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.gallery-card img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.gallery-caption {
  padding: 0.95rem 1.15rem;
}

.gallery-caption strong {
  display: block;
  font-size: 0.94rem;
  color: var(--primary-dark);
}

.gallery-caption span {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* Connect & Company Owner Section */
.owner-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2.25rem;
}

.owner-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.owner-header img {
  width: 68px;
  height: 68px;
  object-fit: contain;
  border-radius: 14px;
  border: 1px solid var(--border-color);
  padding: 4px;
}

.owner-details-list {
  list-style: none;
  display: grid;
  gap: 0.7rem;
  font-size: 0.95rem;
}

.owner-details-list li strong {
  color: var(--primary-dark);
}

.channels-box {
  background: var(--primary-light);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.channel-links {
  list-style: none;
  display: grid;
  gap: 0.65rem;
  margin: 1rem 0 1.5rem;
}

.channel-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #fff;
  padding: 0.75rem 1rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--primary-dark);
  border: 1px solid var(--border-color);
}

.channel-links a:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateX(3px);
}

/* Footer */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.86);
  padding: 3.5rem 0 2rem;
  font-size: 0.92rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 2.25rem;
  padding-bottom: 2.25rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.site-footer h4 {
  color: #fff;
  font-size: 1.08rem;
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
  display: grid;
  gap: 0.55rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.82);
}

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

.footer-bottom {
  padding-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.84rem;
  color: rgba(255, 255, 255, 0.68);
}

/* Responsive */
@media (max-width: 1180px) {
  .nav-toggle {
    display: inline-flex;
  }
  .nav-menu {
    display: none;
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
  }
  .nav-menu.open {
    display: flex;
  }
  .header-cta {
    display: none;
  }
}

@media (max-width: 1024px) {
  .hero-grid,
  .founder-grid,
  .screening-hero-box,
  .owner-card,
  .knowledge-layout {
    grid-template-columns: 1fr;
  }
  .founder-profile-card,
  .knowledge-nav {
    position: static;
  }
  .roadmap-timeline {
    grid-template-columns: repeat(2, 1fr);
  }
  .stats-tiers,
  .process-steps,
  .gallery-grid,
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .top-bar {
    font-size: 0.78rem;
  }
  .top-bar-links {
    gap: 0.5rem 0.85rem;
  }
  .eyebrow {
    font-size: 0.72rem;
    padding: 0.32rem 0.75rem;
    white-space: normal;
  }
  .hero {
    padding: 2.25rem 0 3rem;
  }
  .hero-stats,
  .hero-sub-cards,
  .stats-tiers,
  .company-mission-grid,
  .roadmap-timeline,
  .stage-columns,
  .reasons-grid,
  .process-steps,
  .handbook-grid,
  .gallery-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .section {
    padding: 3rem 0;
  }
  .letter-card,
  .stage-panel,
  .knowledge-article,
  .owner-card,
  .stats-banner,
  .screening-hero-box,
  .process-card {
    padding: 1.35rem;
  }
}