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

:root {
  --navy: #0A1E3F;
  --navy-light: #122a52;
  --blue: #1565C0;
  --blue-mid: #1976D2;
  --blue-light: #E3F2FD;
  --cyan: #00ACC1;
  --cyan-light: #B2EBF2;
  --gold: #FFB300;
  --red: #E53935;
  --red-light: #FFEBEE;
  --text-dark: #1A1A2E;
  --text-gray: #5C6B7A;
  --text-white: #FFFFFF;
  --bg-light: #F5F7FA;
  --bg-white: #FFFFFF;
  --border: #E0E6ED;
  --green: #2E7D32;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.12);
  --shadow-xl: 0 16px 60px rgba(0,0,0,0.15);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text-dark);
  background: var(--bg-white);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  text-decoration: none;
  color: inherit;
}

svg {
  width: 100%;
  height: 100%;
}

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

/* ============================
   NAVIGATION
   ============================ */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(10, 30, 63, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 172, 193, 0.15);
  transition: var(--transition);
}

#navbar.scrolled {
  background: rgba(10, 30, 63, 0.95);
  box-shadow: 0 2px 30px rgba(0,0,0,0.3);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--cyan), var(--blue));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 900;
  color: white;
  font-family: Arial, sans-serif;
  flex-shrink: 0;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.logo-name {
  font-size: 16px;
  font-weight: 700;
  color: white;
}

.logo-sub {
  font-size: 9px;
  color: var(--cyan);
  letter-spacing: 1px;
}

.nav-menu {
  display: flex;
  gap: 8px;
  align-items: center;
}

.nav-link {
  padding: 8px 16px;
  font-size: 14px;
  color: rgba(255,255,255,0.75);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  font-weight: 500;
}

.nav-link:hover {
  color: white;
  background: rgba(255,255,255,0.08);
}

.nav-cta {
  padding: 9px 24px;
  font-size: 14px;
  color: white;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  border-radius: var(--radius-sm);
  font-weight: 600;
  transition: var(--transition);
  box-shadow: 0 2px 12px rgba(0,172,193,0.3);
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(0,172,193,0.5);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: white;
  border-radius: 2px;
  transition: var(--transition);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================
   HERO
   ============================ */
.hero {
  min-height: 100vh;
  background: var(--navy);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 100px 24px 60px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  animation: float 8s ease-in-out infinite;
}

.orb-1 {
  width: 500px;
  height: 500px;
  background: rgba(21, 101, 192, 0.25);
  top: -100px;
  right: -100px;
}

.orb-2 {
  width: 400px;
  height: 400px;
  background: rgba(0, 172, 193, 0.2);
  bottom: -50px;
  left: -80px;
  animation-delay: 2s;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,172,193,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,172,193,0.04) 1px, transparent 1px);
  background-size: 50px 50px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(20px, -30px) scale(1.05); }
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 900px;
}

.hero-badge {
  display: inline-block;
  padding: 6px 18px;
  background: rgba(0, 172, 193, 0.15);
  border: 1px solid rgba(0, 172, 193, 0.3);
  border-radius: 20px;
  font-size: 13px;
  color: var(--cyan);
  margin-bottom: 24px;
  letter-spacing: 1px;
  animation: fadeInUp 0.8s ease;
}

.hero-title {
  font-size: clamp(1.8rem, 4.5vw, 3.2rem);
  font-weight: 900;
  color: white;
  letter-spacing: 1px;
  margin-bottom: 12px;
  animation: fadeInUp 0.8s ease 0.1s both;
  text-shadow: 0 4px 30px rgba(0,172,193,0.3);
  line-height: 1.5;
}

.hero-title .hero-title-accent {
  background: linear-gradient(135deg, var(--cyan), #4DD0E1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-en {
  font-size: clamp(0.8rem, 2vw, 1rem);
  color: var(--cyan);
  letter-spacing: 3px;
  margin-bottom: 20px;
  animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-divider {
  width: 60px;
  height: 3px;
  background: var(--cyan);
  margin: 0 auto 24px;
  border-radius: 2px;
  animation: scaleX 0.6s ease 0.3s both;
}

@keyframes scaleX {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

.hero-tagline {
  font-size: clamp(0.9rem, 2vw, 1.1rem);
  color: #B0BEC5;
  line-height: 2;
  margin-bottom: 36px;
  animation: fadeInUp 0.8s ease 0.4s both;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.hl-tag {
  display: inline-block;
  padding: 2px 10px;
  margin: 0 2px;
  background: rgba(0, 172, 193, 0.15);
  border: 1px solid rgba(0, 172, 193, 0.35);
  border-radius: 6px;
  color: var(--cyan);
  font-weight: 600;
  font-size: 0.95em;
  transition: var(--transition);
}

.hl-tag:hover {
  background: rgba(0, 172, 193, 0.3);
  transform: translateY(-2px);
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 60px;
  animation: fadeInUp 0.8s ease 0.5s both;
}

.btn {
  padding: 14px 36px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  cursor: pointer;
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  color: white;
  box-shadow: 0 4px 20px rgba(0,172,193,0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0,172,193,0.5);
}

.btn-ghost {
  background: rgba(255,255,255,0.05);
  color: white;
  border: 1px solid rgba(255,255,255,0.2);
}

.btn-ghost:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.4);
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  animation: fadeInUp 0.8s ease 0.6s both;
}

.stat-item {
  text-align: center;
}

.stat-num {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 900;
  color: var(--cyan);
  line-height: 1;
}

.stat-label {
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  margin-top: 6px;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,0.15);
}

.hero-scroll {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  z-index: 1;
}

.hero-scroll span {
  font-size: 11px;
  color: rgba(255,255,255,0.4);
  letter-spacing: 2px;
  display: block;
  margin-bottom: 8px;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--cyan), transparent);
  margin: 0 auto;
  position: relative;
  overflow: hidden;
}

.scroll-line::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 50%;
  background: var(--cyan);
  animation: scrollDown 1.5s ease-in-out infinite;
}

@keyframes scrollDown {
  0% { transform: translateY(-100%); }
  100% { transform: translateY(200%); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============================
   SECTIONS
   ============================ */
.section {
  padding: 100px 0;
  position: relative;
  overflow: hidden;
}

.section-light {
  background: var(--bg-white);
}

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

.section-alt {
  background: var(--bg-light);
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-label {
  font-size: 13px;
  color: var(--cyan);
  letter-spacing: 3px;
  font-weight: 600;
  margin-bottom: 12px;
}

.section-dark .section-label {
  color: var(--cyan);
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 16px;
}

.section-dark .section-title {
  color: white;
}

.section-bar {
  width: 50px;
  height: 4px;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
  margin: 0 auto;
  border-radius: 2px;
}

/* ============================
   ABOUT
   ============================ */
.about-intro {
  max-width: 900px;
  margin: 0 auto 60px;
  text-align: center;
  padding: 40px;
  background: var(--bg-light);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--blue);
  box-shadow: var(--shadow-sm);
}

.about-intro p {
  font-size: 16px;
  line-height: 2;
  color: var(--text-dark);
}

.hl {
  color: var(--blue);
  font-weight: 600;
}

.pillars-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.pillar-card {
  background: white;
  border-radius: var(--radius);
  padding: 36px 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border-top: 4px solid var(--blue);
  transition: var(--transition);
}

.pillar-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.pillar-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 20px;
  background: var(--blue-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--blue);
  transition: var(--transition);
}

.pillar-card:hover .pillar-icon {
  background: var(--blue);
  color: white;
  transform: scale(1.1);
}

.pillar-icon svg {
  width: 28px;
  height: 28px;
}

.pillar-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-dark);
}

.pillar-card p {
  font-size: 13px;
  color: var(--text-gray);
  line-height: 1.6;
}

/* ============================
   ARCHITECTURE
   ============================ */
.arch-container {
  display: flex;
  gap: 16px;
  max-width: 1000px;
  margin: 0 auto;
}

.arch-side {
  width: 40px;
  flex-shrink: 0;
  background: linear-gradient(180deg, var(--gold), rgba(255,179,0,0.3));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  writing-mode: vertical-rl;
  text-orientation: mixed;
}

.arch-side-text {
  font-size: 11px;
  color: var(--gold);
  font-weight: 700;
  letter-spacing: 2px;
  white-space: nowrap;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
}

.arch-layers {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.arch-layer {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 24px 28px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  position: relative;
}

.arch-layer:hover {
  transform: translateX(8px);
}

.arch-app {
  background: linear-gradient(135deg, var(--blue), var(--blue-mid));
  color: white;
}

.arch-ai {
  background: linear-gradient(135deg, var(--cyan), #00838F);
  color: white;
}

.arch-data {
  background: linear-gradient(135deg, var(--navy-light), var(--navy));
  color: white;
  border: 1px solid rgba(0,172,193,0.2);
}

.arch-layer-icon {
  width: 56px;
  height: 56px;
  flex-shrink: 0;
  background: rgba(255,255,255,0.15);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
}

.arch-layer-info h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 6px;
}

.arch-layer-sub {
  font-size: 14px;
  opacity: 0.85;
  margin-bottom: 4px;
}

.arch-layer-italic {
  font-size: 13px;
  opacity: 0.6;
  font-style: italic;
}

.arch-pills {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.arch-pill {
  padding: 4px 12px;
  background: rgba(255,255,255,0.15);
  border-radius: 16px;
  font-size: 12px;
  font-weight: 500;
  backdrop-filter: blur(10px);
  transition: var(--transition);
}

.arch-pill:hover {
  background: rgba(255,255,255,0.3);
  transform: translateY(-2px);
}

.arch-arrow {
  width: 24px;
  height: 24px;
  margin: 4px auto;
  color: var(--cyan);
  display: flex;
  align-items: center;
  justify-content: center;
}

.arch-arrow-dark {
  color: var(--navy-light);
}

.arch-arrow svg {
  width: 20px;
  height: 20px;
}

/* ============================
   SOLUTIONS
   ============================ */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.solution-card {
  background: white;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  cursor: pointer;
}

.solution-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.sol-card-header {
  background: var(--c, var(--blue));
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sol-num {
  font-size: 22px;
  font-weight: 900;
  color: white;
  font-family: Arial, sans-serif;
}

.sol-card-icon {
  width: 32px;
  height: 32px;
  color: white;
  opacity: 0.9;
}

.sol-card-body {
  padding: 18px;
}

.sol-card-body h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 8px;
  line-height: 1.4;
}

.sol-card-body p {
  font-size: 12px;
  color: var(--text-gray);
  line-height: 1.5;
}

.solution-summary {
  background: linear-gradient(135deg, var(--navy), var(--navy-light));
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  border: 1px solid rgba(0,172,193,0.2);
}

.sol-summary-content h3 {
  font-size: 20px;
  font-weight: 800;
  color: white;
  line-height: 1.5;
  margin-bottom: 12px;
}

.sol-summary-content p {
  font-size: 12px;
  color: var(--cyan);
}

/* ============================
   MODAL
   ============================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 30, 63, 0.8);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: white;
  border-radius: var(--radius-lg);
  max-width: 900px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  position: relative;
  transform: scale(0.9);
  transition: var(--transition);
  box-shadow: var(--shadow-xl);
}

.modal-overlay.active .modal {
  transform: scale(1);
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 40px;
  height: 40px;
  border: none;
  background: rgba(0,0,0,0.05);
  border-radius: 50%;
  font-size: 24px;
  cursor: pointer;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-gray);
  transition: var(--transition);
}

.modal-close:hover {
  background: var(--red-light);
  color: var(--red);
}

.modal-content {
  padding: 0;
}

.modal-header {
  background: linear-gradient(135deg, var(--navy), var(--navy-light));
  padding: 28px 32px;
  color: white;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.modal-subtitle {
  font-size: 12px;
  color: var(--cyan);
  letter-spacing: 3px;
  margin-bottom: 6px;
}

.modal-header h2 {
  font-size: 24px;
  font-weight: 800;
}

.modal-body {
  padding: 28px 32px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.modal-col {
  background: var(--bg-light);
  border-radius: var(--radius);
  overflow: hidden;
}

.modal-col-header {
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 700;
  color: white;
}

.modal-col-pain .modal-col-header {
  background: var(--red);
}

.modal-col-sol .modal-col-header {
  background: var(--blue);
}

.modal-col-header svg {
  width: 20px;
  height: 20px;
}

.modal-col-list {
  padding: 16px 20px;
  list-style: none;
}

.modal-col-list li {
  font-size: 13px;
  color: var(--text-dark);
  line-height: 1.6;
  padding: 8px 0 8px 24px;
  position: relative;
  border-bottom: 1px solid rgba(0,0,0,0.04);
}

.modal-col-list li:last-child {
  border-bottom: none;
}

.modal-col-pain .modal-col-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 14px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--red);
}

.modal-col-sol .modal-col-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 14px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
}

.modal-value {
  margin: 0 32px 28px;
  padding: 16px 24px;
  background: var(--navy);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  gap: 12px;
}

.modal-value svg {
  width: 22px;
  height: 22px;
  color: var(--cyan);
  flex-shrink: 0;
}

.modal-value span {
  font-size: 15px;
  font-weight: 600;
  color: var(--cyan);
}

/* ============================
   ADVANTAGES
   ============================ */
.adv-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.adv-card {
  background: white;
  border-radius: var(--radius);
  padding: 28px 22px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
}

.adv-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.adv-num {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 900;
  color: white;
  margin-bottom: 16px;
  font-family: Arial, sans-serif;
}

.adv-icon {
  width: 36px;
  height: 36px;
  color: var(--blue);
  margin-bottom: 14px;
  position: absolute;
  top: 28px;
  right: 22px;
  opacity: 0.15;
  transition: var(--transition);
}

.adv-card:hover .adv-icon {
  opacity: 0.4;
  transform: scale(1.2);
}

.adv-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 10px;
  line-height: 1.4;
}

.adv-card p {
  font-size: 13px;
  color: var(--text-gray);
  line-height: 1.5;
}

.adv-summary-card {
  background: linear-gradient(135deg, var(--navy), var(--navy-light));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  border: 1px solid rgba(0,172,193,0.2);
}

.adv-summary-icon {
  width: 48px;
  height: 48px;
  color: var(--cyan);
  margin-bottom: 16px;
}

.adv-summary-card h3 {
  font-size: 17px;
  color: white;
  line-height: 1.5;
  margin-bottom: 0;
}

/* ============================
   SERVICE
   ============================ */
.service-flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 50px;
}

.service-card {
  background: white;
  border-radius: var(--radius);
  padding: 28px 22px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
  border-top: 4px solid var(--c, var(--blue));
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.service-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.service-num {
  font-size: 28px;
  font-weight: 900;
  color: var(--c, var(--blue));
  font-family: Arial, sans-serif;
}

.service-icon {
  width: 36px;
  height: 36px;
  color: var(--c, var(--blue));
  opacity: 0.3;
}

.service-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 10px;
}

.service-card p {
  font-size: 13px;
  color: var(--text-gray);
  line-height: 1.6;
}

.service-arrow {
  position: absolute;
  right: -14px;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  background: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
  z-index: 1;
}

.service-arrow svg {
  width: 14px;
  height: 14px;
  color: var(--cyan);
}

.service-card:last-child .service-arrow {
  display: none;
}

.service-principles {
  background: white;
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-sm);
}

.principles-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--blue);
  margin-bottom: 24px;
  text-align: center;
}

.principles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.principle-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg-light);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.principle-item:hover {
  background: var(--blue-light);
}

.principle-check {
  width: 24px;
  height: 24px;
  color: var(--green);
  flex-shrink: 0;
}

.principle-item span {
  font-size: 14px;
  color: var(--text-dark);
  font-weight: 500;
}

/* ============================
   VISION
   ============================ */
.vision-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.vision-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
}

.vision-bg .orb-1 {
  width: 400px;
  height: 400px;
  background: rgba(21, 101, 192, 0.2);
  bottom: -100px;
  left: -100px;
}

.vision-bg .orb-2 {
  width: 350px;
  height: 350px;
  background: rgba(0, 172, 193, 0.15);
  top: -50px;
  right: -50px;
}

.vision-container {
  position: relative;
  z-index: 1;
  text-align: center;
}

.vision-text {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  color: #B0BEC5;
  line-height: 2;
  max-width: 800px;
  margin: 0 auto 50px;
}

.vision-tags {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 50px;
}

.vision-tag {
  padding: 16px 36px;
  background: linear-gradient(135deg, var(--blue), var(--blue-mid));
  color: white;
  border-radius: var(--radius);
  font-size: 22px;
  font-weight: 800;
  box-shadow: 0 4px 20px rgba(21,101,192,0.35);
  transition: var(--transition);
  animation: tagPulse 3s ease-in-out infinite;
}

.vision-tag:nth-child(1) { animation-delay: 0s; }
.vision-tag:nth-child(2) { animation-delay: 0.3s; }
.vision-tag:nth-child(3) { animation-delay: 0.6s; }
.vision-tag:nth-child(4) { animation-delay: 0.9s; }
.vision-tag:nth-child(5) { animation-delay: 1.2s; }

.vision-tag:hover {
  transform: translateY(-6px) scale(1.05);
  box-shadow: 0 8px 30px rgba(21,101,192,0.5);
}

@keyframes tagPulse {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

.vision-closing p {
  font-size: 15px;
  color: #90A4AE;
  line-height: 2.2;
}

/* ============================
   FOOTER
   ============================ */
.footer {
  background: var(--navy);
  color: rgba(255,255,255,0.7);
  padding: 60px 0 30px;
  border-top: 1px solid rgba(0,172,193,0.15);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 2fr;
  gap: 60px;
  margin-bottom: 40px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255,255,255,0.5);
  margin-bottom: 16px;
}

.footer-tags span {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(0,172,193,0.1);
  border: 1px solid rgba(0,172,193,0.2);
  border-radius: 16px;
  font-size: 12px;
  color: var(--cyan);
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: white;
  margin-bottom: 16px;
}

.footer-col a, .footer-col p {
  display: block;
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  margin-bottom: 10px;
  transition: var(--transition);
}

.footer-col a:hover {
  color: var(--cyan);
  padding-left: 4px;
}

.footer-contact-item {
  display: flex !important;
  align-items: center;
  gap: 8px;
}

.footer-contact-item svg {
  width: 16px;
  height: 16px;
  color: var(--cyan);
  flex-shrink: 0;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  text-align: center;
}

.footer-bottom p {
  font-size: 12px;
  color: rgba(255,255,255,0.3);
}

/* ============================
   REVEAL ANIMATIONS
   ============================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  transition-delay: calc(var(--delay, 0) * 0.1s);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* ============================
   RESPONSIVE
   ============================ */
@media (max-width: 1024px) {
  .pillars-grid,
  .solutions-grid,
  .adv-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .service-flow {
    grid-template-columns: repeat(2, 1fr);
  }

  .service-arrow {
    display: none !important;
  }

  .principles-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    width: 100%;
    background: rgba(10, 30, 63, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 20px;
    gap: 4px;
    border-bottom: 1px solid rgba(0,172,193,0.15);
  }

  .nav-menu.open {
    display: flex;
  }

  .nav-link {
    width: 100%;
    padding: 12px 16px;
  }

  .nav-cta {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .section {
    padding: 60px 0;
  }

  .pillars-grid,
  .solutions-grid,
  .adv-grid,
  .service-flow {
    grid-template-columns: 1fr;
  }

  .principles-grid {
    grid-template-columns: 1fr;
  }

  .footer-nav {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .hero-stats {
    flex-wrap: wrap;
    gap: 16px;
  }

  .stat-divider {
    display: none;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
    max-width: 280px;
    margin: 0 auto 40px;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .arch-container {
    flex-direction: column;
  }

  .arch-side {
    width: 100%;
    height: 30px;
    writing-mode: horizontal-tb;
  }

  .arch-side-text {
    writing-mode: horizontal-tb;
    transform: none;
  }

  .modal-body {
    grid-template-columns: 1fr;
  }

  .about-intro {
    padding: 24px;
  }

  .service-principles {
    padding: 24px;
  }
}

@media (max-width: 480px) {
  .hero-stats {
    flex-direction: column;
    gap: 20px;
  }

  .vision-tags {
    gap: 10px;
  }

  .vision-tag {
    padding: 12px 24px;
    font-size: 18px;
  }
}