/* ===== Variables ===== */
:root {
  --color-navy: #1a365d;
  --color-navy-dark: #0f2440;
  --color-blue: #2b6cb0;
  --color-blue-light: #3182ce;
  --color-accent: #2c5282;
  --color-teal: #2c7a7b;
  --color-red: #c53030;
  --color-bg: #ffffff;
  --color-bg-alt: #f7fafc;
  --color-bg-section: #edf2f7;
  --color-text: #2d3748;
  --color-text-light: #4a5568;
  --color-text-muted: #718096;
  --color-border: #e2e8f0;
  --color-border-light: #edf2f7;
  --shadow-sm: 0 1px 3px rgba(26, 54, 93, 0.08);
  --shadow-md: 0 4px 12px rgba(26, 54, 93, 0.1);
  --shadow-lg: 0 8px 24px rgba(26, 54, 93, 0.12);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --header-height: 72px;
  --transition: 0.25s ease;
  --font-sans: "Pretendard", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans KR", sans-serif;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border-light);
  transition: box-shadow var(--transition);
}

.header.scrolled {
  box-shadow: var(--shadow-sm);
}

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

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

.logo-img {
  height: 40px;
  width: auto;
  display: block;
  object-fit: contain;
}

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

.nav-link {
  display: block;
  padding: 8px 14px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-light);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-navy);
  background: var(--color-bg-alt);
}

.nav-link-cta {
  background: var(--color-navy);
  color: #fff !important;
}

.nav-link-cta:hover {
  background: var(--color-navy-dark);
}

@media (min-width: 769px) and (max-width: 1280px) {
  .nav-link {
    padding: 8px 10px;
    font-size: 0.82rem;
  }

  .nav-list {
    gap: 4px;
  }
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-navy);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
}

.btn-primary {
  background: var(--color-navy);
  color: #fff;
  border-color: var(--color-navy);
}

.btn-primary:hover {
  background: var(--color-navy-dark);
  border-color: var(--color-navy-dark);
}

.btn-outline {
  background: transparent;
  color: var(--color-navy);
  border-color: var(--color-navy);
}

.btn-outline:hover {
  background: var(--color-navy);
  color: #fff;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: calc(var(--header-height) + 36px) 0 28px;
  background:
    radial-gradient(circle at 82% 26%, rgba(43, 108, 176, 0.05), transparent 34%),
    radial-gradient(circle at 14% 16%, rgba(26, 54, 93, 0.035), transparent 26%),
    linear-gradient(135deg, #fafcff 0%, #f6f9fd 46%, #eef3fa 100%);
  overflow: hidden;
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}

.hero::before {
  top: -120px;
  right: -80px;
  width: 440px;
  height: 440px;
  background: radial-gradient(circle, rgba(49, 130, 206, 0.06) 0%, transparent 68%);
}

.hero::after {
  bottom: -140px;
  left: -60px;
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, rgba(26, 54, 93, 0.04) 0%, transparent 72%);
}

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

@media (min-width: 901px) {
  .hero {
    min-height: calc(100svh - var(--header-height) - 20px);
    display: flex;
    align-items: center;
  }

  .hero > .container {
    width: 100%;
  }
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 40px;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-badge {
  display: inline-block;
  align-self: flex-start;
  padding: 6px 14px;
  margin-bottom: 18px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-blue);
  background: rgba(43, 108, 176, 0.1);
  border-radius: 20px;
}

.hero-title {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  line-height: 1.3;
  color: var(--color-navy);
  margin-bottom: 18px;
  letter-spacing: -0.02em;
}

.hero-title-line {
  word-break: keep-all;
  line-height: 1.25;
}

.hero-title-brand {
  color: var(--color-blue);
  font-size: clamp(1.85rem, 4.2vw, 2.65rem);
  line-height: 1.2;
}

.hero-desc {
  font-size: 1rem;
  color: var(--color-text-light);
  margin-bottom: 22px;
  line-height: 1.75;
}

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

.hero-keywords {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 22px;
}

.hero-keyword-card {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.hero-keyword-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  background: rgba(43, 108, 176, 0.08);
  border-radius: var(--radius-sm);
}

.hero-keyword-icon svg {
  width: 16px;
  height: 16px;
  color: var(--color-blue);
}

.hero-keyword-text strong {
  display: block;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 4px;
}

.hero-keyword-text p {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.workflow-ambience {
  position: absolute;
  inset: -24px -16px;
  pointer-events: none;
  z-index: 0;
}

.workflow-blur {
  position: absolute;
  border-radius: 50%;
  filter: blur(42px);
}

.workflow-blur-1 {
  top: 4%;
  right: 2%;
  width: 200px;
  height: 200px;
  background: rgba(43, 108, 176, 0.1);
}

.workflow-blur-2 {
  bottom: 8%;
  left: 0;
  width: 170px;
  height: 170px;
  background: rgba(26, 54, 93, 0.07);
}

.workflow-network-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 380px;
  height: 380px;
  transform: translate(-50%, -50%);
  border: 1px dashed rgba(43, 108, 176, 0.07);
  border-radius: 50%;
}

.workflow-network-ring::before {
  content: "";
  position: absolute;
  inset: 28px;
  border: 1px solid rgba(43, 108, 176, 0.04);
  border-radius: 50%;
}

/* Workflow Panel */
.workflow-panel {
  position: relative;
  width: 100%;
  max-width: 540px;
  height: 420px;
  margin: 0 auto;
  z-index: 1;
}

.workflow-grid-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 52% 48%, rgba(43, 108, 176, 0.045) 0%, transparent 58%),
    linear-gradient(90deg, rgba(226, 232, 240, 0.55) 1px, transparent 1px),
    linear-gradient(rgba(226, 232, 240, 0.55) 1px, transparent 1px);
  background-color: rgba(255, 255, 255, 0.78);
  background-size: auto, 40px 40px, 40px 40px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(226, 232, 240, 0.9);
  box-shadow: 0 8px 32px rgba(26, 54, 93, 0.06);
}

.workflow-deco-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 320px;
  height: 320px;
  transform: translate(-50%, -50%);
  border: 1px dashed rgba(43, 108, 176, 0.06);
  border-radius: 50%;
  z-index: 0;
  pointer-events: none;
}

.workflow-deco-dots {
  position: absolute;
  right: 16px;
  bottom: 16px;
  width: 100px;
  height: 68px;
  opacity: 0.12;
  background-image: radial-gradient(circle at 1px 1px, rgba(43, 108, 176, 0.55) 1px, transparent 1px);
  background-size: 12px 12px;
  border-radius: 0 0 var(--radius-md) 0;
  z-index: 0;
  pointer-events: none;
}

.workflow-deco-data-tl {
  position: absolute;
  left: 16px;
  top: 16px;
  width: 88px;
  height: 56px;
  opacity: 0.1;
  background-image:
    linear-gradient(rgba(43, 108, 176, 0.4) 1px, transparent 1px),
    linear-gradient(90deg, rgba(43, 108, 176, 0.4) 1px, transparent 1px);
  background-size: 10px 10px;
  border-radius: var(--radius-md) 0 0 0;
  z-index: 0;
  pointer-events: none;
}

.workflow-curves {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
}

.workflow-curves path {
  fill: none;
  stroke: rgba(43, 108, 176, 0.06);
  stroke-width: 1;
  stroke-dasharray: 3 5;
}

.workflow-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 280px;
  height: 280px;
  transform: translate(-50%, -50%);
  border: 1px dashed rgba(43, 108, 176, 0.16);
  border-radius: 50%;
  z-index: 1;
}

.workflow-lines {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}

.workflow-line {
  position: absolute;
  top: 50%;
  left: 50%;
  height: 1px;
  background: linear-gradient(90deg, rgba(43, 108, 176, 0.52), rgba(43, 108, 176, 0.1));
  transform-origin: 0 50%;
}

.workflow-center-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 148px;
  height: 148px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(37, 99, 235, 0.09) 0%,
    rgba(43, 108, 176, 0.05) 42%,
    transparent 72%
  );
  z-index: 2;
  pointer-events: none;
}

.workflow-line.line-1 {
  width: 108px;
  transform: rotate(-90deg);
}

.workflow-line.line-2 {
  width: 132px;
  transform: rotate(-145deg);
}

.workflow-line.line-3 {
  width: 132px;
  transform: rotate(-35deg);
}

.workflow-line.line-4 {
  width: 140px;
  transform: rotate(145deg);
}

.workflow-line.line-5 {
  width: 140px;
  transform: rotate(35deg);
}

.workflow-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 108px;
  height: 108px;
  background: #fff;
  border: 2px solid var(--color-navy);
  border-radius: 50%;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  z-index: 3;
}

.workflow-center-icon {
  max-width: 72%;
  max-height: 72%;
  width: auto;
  height: auto;
  object-fit: contain;
  display: block;
}

.workflow-node {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 14px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--color-navy);
  z-index: 2;
  white-space: nowrap;
}

.workflow-node-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  background: rgba(43, 108, 176, 0.08);
  border-radius: var(--radius-sm);
}

.workflow-node-icon svg {
  width: 18px;
  height: 18px;
  color: var(--color-blue);
}

.workflow-node.node-1 {
  top: 4%;
  left: 50%;
  transform: translateX(-50%);
}

.workflow-node.node-2 {
  top: 26%;
  left: 2%;
}

.workflow-node.node-3 {
  top: 26%;
  right: 2%;
}

.workflow-node.node-4 {
  bottom: 12%;
  left: 4%;
}

.workflow-node.node-5 {
  bottom: 12%;
  right: 4%;
}

.hide-mobile {
  display: inline;
}

/* ===== Sections ===== */
.section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  color: var(--color-navy);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--color-text-light);
  max-width: 680px;
  margin: 0 auto;
}

/* ===== About ===== */
.section-about {
  background: var(--color-bg);
}

.about-content {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.about-main {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 40px;
  align-items: center;
}

.about-visual {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-md);
  background: #fff;
}

.about-team-img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  aspect-ratio: 4 / 3;
}

.about-visual-caption {
  padding: 12px 16px;
  font-size: 0.82rem;
  color: var(--color-text-muted);
  text-align: center;
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border-light);
}

.about-text p {
  margin-bottom: 18px;
  color: var(--color-text-light);
  font-size: 1rem;
}

.about-text p:last-child {
  margin-bottom: 0;
}

.about-cards {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
}

.highlight-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-navy);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.highlight-card:hover {
  border-color: var(--color-blue);
  box-shadow: var(--shadow-sm);
}

.highlight-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  background: #fff;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.highlight-icon svg {
  width: 22px;
  height: 22px;
  color: var(--color-blue);
}

/* ===== Differentiators ===== */
.section-differentiators {
  background: var(--color-bg-alt);
}

.diff-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.diff-card {
  padding: 22px 18px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: box-shadow var(--transition);
}

.diff-card:hover {
  box-shadow: var(--shadow-sm);
}

.diff-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-bottom: 14px;
  background: rgba(43, 108, 176, 0.08);
  border-radius: var(--radius-sm);
}

.diff-icon svg {
  width: 22px;
  height: 22px;
  color: var(--color-blue);
}

.diff-card h3 {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 8px;
  line-height: 1.4;
}

.diff-card p {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  line-height: 1.55;
}

/* ===== Solutions ===== */
.section-solutions {
  background: var(--color-bg-alt);
}

.solutions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.solution-card {
  padding: 32px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: box-shadow var(--transition), border-color var(--transition);
}

.solution-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.solution-logo-wrap {
  width: 100%;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px 14px;
  margin-bottom: 18px;
  border-radius: var(--radius-md);
  background: #f8fbff;
  border: 1px solid #e4edf8;
}

.solution-logo-wrap--redribbon {
  background: #fafbfc;
  border-color: #eceef2;
}

.solution-logo {
  max-width: 100%;
  max-height: 56px;
  width: auto;
  height: auto;
  object-fit: contain;
  display: block;
}

.solution-header {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 16px;
}

.solution-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  flex-shrink: 0;
  border-radius: var(--radius-md);
}

.solution-icon svg {
  width: 26px;
  height: 26px;
}

.solution-icon-red {
  background: rgba(197, 48, 48, 0.1);
  color: var(--color-red);
}

.solution-icon-blue {
  background: rgba(43, 108, 176, 0.1);
  color: var(--color-blue);
}

.solution-icon-navy {
  background: rgba(26, 54, 93, 0.1);
  color: var(--color-navy);
}

.solution-icon-teal {
  background: rgba(44, 122, 123, 0.1);
  color: var(--color-teal);
}

.solution-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 4px;
}

.solution-subtitle {
  font-size: 0.85rem;
  color: var(--color-blue);
  font-weight: 500;
}

.solution-desc {
  font-size: 0.95rem;
  color: var(--color-text-light);
  margin-bottom: 20px;
  line-height: 1.7;
}

.solution-features {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.solution-features li {
  position: relative;
  padding-left: 20px;
  font-size: 0.9rem;
  color: var(--color-text);
}

.solution-features li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  background: var(--color-blue);
  border-radius: 50%;
}

/* ===== Portfolio ===== */
.section-portfolio {
  background: var(--color-bg);
}

.portfolio-categories {
  display: flex;
  flex-direction: column;
  gap: 56px;
}

.portfolio-category-title {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 24px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--color-border-light);
}

.portfolio-category-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  font-size: 0.8rem;
  font-weight: 700;
  color: #fff;
  background: var(--color-navy);
  border-radius: var(--radius-sm);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

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

.portfolio-grid-1 {
  grid-template-columns: 1fr;
  max-width: 560px;
}

.portfolio-category-rnd .portfolio-card {
  border-style: dashed;
  border-color: var(--color-border);
  background: var(--color-bg-alt);
}

.portfolio-card {
  display: flex;
  flex-direction: column;
  padding: 24px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: box-shadow var(--transition), border-color var(--transition);
}

.portfolio-card:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(43, 108, 176, 0.3);
}

.portfolio-logo-wrap {
  width: 100%;
  height: 108px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  margin-bottom: 16px;
  border-radius: var(--radius-lg);
  background: #f8fbff;
  border: 1px solid #e4edf8;
  flex-shrink: 0;
}

.portfolio-logo-wrap--light {
  background: #fafbfc;
  border-color: #e8ecf0;
}

.portfolio-logo-wrap--redribbon {
  background: #fafbfc;
  border-color: #eceef2;
}

.portfolio-logo-wrap--signnow {
  padding: 8px 12px;
}

.portfolio-logo {
  max-width: 100%;
  max-height: 88px;
  width: auto;
  height: auto;
  object-fit: contain;
  object-position: center;
  display: block;
}

.portfolio-logo-wrap--signnow .portfolio-logo {
  max-height: 92px;
}

.portfolio-logo-wrap--redribbon .portfolio-logo {
  max-height: 80px;
  max-width: 98%;
}

.portfolio-card-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-navy);
  line-height: 1.4;
  margin-bottom: 12px;
}

.portfolio-card-desc {
  flex: 1;
  font-size: 0.88rem;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 16px;
}

.portfolio-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
}

.portfolio-tag {
  font-size: 0.72rem;
  font-weight: 500;
  padding: 4px 10px;
  color: var(--color-blue);
  background: rgba(43, 108, 176, 0.08);
  border-radius: 20px;
}

/* ===== Technology ===== */
.section-technology {
  background: var(--color-bg-alt);
}

.tech-visual-panel {
  max-width: 720px;
  margin: 0 auto 40px;
  padding: 0 8px;
}

.tech-visual-svg {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.tech-card {
  padding: 28px 20px;
  text-align: center;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  transition: all var(--transition);
}

.tech-card:hover {
  background: #fff;
  border-color: var(--color-blue);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.tech-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.tech-icon svg {
  width: 28px;
  height: 28px;
  color: var(--color-navy);
}

.tech-card h3 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-navy);
  line-height: 1.5;
}

.tech-card--patent {
  grid-column: span 2;
  text-align: left;
  padding: 28px 24px;
  position: relative;
}

.tech-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 4px 10px;
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--color-navy);
  background: rgba(43, 108, 176, 0.1);
  border: 1px solid rgba(43, 108, 176, 0.2);
  border-radius: 20px;
  letter-spacing: 0.02em;
}

.tech-card--patent .tech-icon {
  margin: 0 0 14px;
}

.tech-card--patent h3 {
  margin-bottom: 10px;
}

.tech-card-desc {
  font-size: 0.84rem;
  color: var(--color-text-light);
  line-height: 1.65;
  margin-bottom: 10px;
}

.tech-card-meta {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

/* ===== Business ===== */
.section-business {
  background: var(--color-bg-alt);
}

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

.business-card {
  padding: 32px 28px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: box-shadow var(--transition);
}

.business-card:hover {
  box-shadow: var(--shadow-md);
}

.business-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-bottom: 12px;
  background: rgba(43, 108, 176, 0.08);
  border-radius: var(--radius-sm);
}

.business-icon svg {
  width: 22px;
  height: 22px;
  color: var(--color-blue);
}

.business-number {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-blue);
  margin-bottom: 12px;
  letter-spacing: 0.05em;
}

.business-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 12px;
}

.business-card p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

.business-card:last-child {
  grid-column: span 1;
}

/* ===== Benefits ===== */
.section-benefits {
  background: var(--color-bg);
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.benefit-card {
  padding: 22px 18px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: box-shadow var(--transition);
}

.benefit-card:hover {
  box-shadow: var(--shadow-sm);
}

.benefit-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  margin-bottom: 12px;
  background: rgba(43, 108, 176, 0.08);
  border-radius: var(--radius-sm);
}

.benefit-icon svg {
  width: 20px;
  height: 20px;
  color: var(--color-blue);
}

.benefit-card h3 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 8px;
  line-height: 1.4;
}

.benefit-card p {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  line-height: 1.55;
}

/* ===== Targets ===== */
.section-targets {
  background: var(--color-bg-alt);
}

.targets-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 14px;
}

.target-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 20px 12px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-align: center;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-navy);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.target-card:hover {
  border-color: var(--color-blue);
  box-shadow: var(--shadow-sm);
}

.target-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(43, 108, 176, 0.08);
  border-radius: var(--radius-sm);
}

.target-icon svg {
  width: 20px;
  height: 20px;
  color: var(--color-blue);
}

/* ===== Trust ===== */
.section-trust {
  padding: 56px 0;
  background: var(--color-bg);
}

.trust-panel {
  display: flex;
  align-items: center;
  gap: 24px;
  max-width: 880px;
  margin: 0 auto;
  padding: 28px 32px;
  background: linear-gradient(135deg, #f8fbff 0%, #f0f5fb 100%);
  border: 1px solid #e4edf8;
  border-radius: var(--radius-lg);
}

.trust-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  flex-shrink: 0;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 50%;
}

.trust-icon svg {
  width: 28px;
  height: 28px;
  color: var(--color-navy);
}

.trust-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 6px;
}

.trust-content p {
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ===== History ===== */
.section-history {
  background: var(--color-bg);
}

.patent-highlight {
  display: flex;
  align-items: center;
  gap: 16px;
  max-width: 720px;
  margin: 0 auto 20px;
  padding: 16px 20px;
  background: linear-gradient(135deg, #f8fbff 0%, #eef4fb 100%);
  border: 1px solid #d8e6f5;
  border-radius: var(--radius-lg);
}

.patent-highlight-badge {
  flex-shrink: 0;
  padding: 6px 12px;
  font-size: 0.75rem;
  font-weight: 700;
  color: #fff;
  background: var(--color-navy);
  border-radius: 20px;
  white-space: nowrap;
}

.patent-highlight-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.patent-highlight-text strong {
  font-size: 0.9rem;
  color: var(--color-navy);
  font-weight: 700;
  line-height: 1.4;
}

.patent-highlight-text span {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

.highlights-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 48px;
  padding: 20px 16px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
}

.highlight-chip {
  padding: 8px 14px;
  font-size: 0.82rem;
  color: var(--color-text-light);
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  white-space: nowrap;
}

.highlight-chip strong {
  color: var(--color-navy);
  margin-right: 4px;
}

.highlight-chip--patent {
  border-color: rgba(26, 54, 93, 0.25);
  background: #f8fbff;
}

.timeline {
  max-width: 800px;
  margin: 0 auto;
}

.timeline-item {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 32px;
  padding-bottom: 48px;
  position: relative;
}

.timeline-item:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 50px;
  top: 48px;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

.timeline-year {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-navy);
  text-align: right;
  padding-top: 4px;
}

.timeline-content {
  padding: 24px 28px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-navy);
}

.timeline-content ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.timeline-content li {
  position: relative;
  padding-left: 18px;
  font-size: 0.95rem;
  color: var(--color-text-light);
}

.timeline-content li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  background: var(--color-blue);
  border-radius: 50%;
}

/* ===== Contact ===== */
.section-contact {
  background: linear-gradient(180deg, var(--color-bg-alt) 0%, var(--color-bg-section) 100%);
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: start;
}

.contact-info .section-title {
  text-align: left;
  margin-bottom: 24px;
}

.contact-info p {
  color: var(--color-text-light);
  margin-bottom: 16px;
  font-size: 0.95rem;
}

.contact-types {
  margin-top: 32px;
}

.contact-types h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 16px;
}

.contact-types ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.contact-types li {
  position: relative;
  padding-left: 20px;
  font-size: 0.9rem;
  color: var(--color-text-light);
}

.contact-types li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  border: 2px solid var(--color-blue);
  border-radius: 2px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-visual {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
  background: #fff;
}

.contact-visual-img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  aspect-ratio: 16 / 9;
  max-height: 160px;
}

.contact-visual-caption {
  padding: 10px 14px;
  font-size: 0.78rem;
  color: var(--color-text-muted);
  text-align: center;
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border-light);
}

.contact-card {
  padding: 36px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.contact-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 28px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border-light);
}

.contact-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-item dt {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.contact-item dd {
  font-size: 1rem;
  color: var(--color-text);
  font-weight: 500;
}

/* ===== Footer ===== */
.footer {
  padding: 48px 0 32px;
  background: var(--color-navy-dark);
  color: rgba(255, 255, 255, 0.8);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.footer-logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
}

.footer-tagline {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.6);
}

.footer-info {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.8;
}

.footer-info a,
.contact-item a {
  color: inherit;
  transition: color var(--transition);
}

.footer-info a:hover {
  color: rgba(255, 255, 255, 0.9);
}

.contact-item a {
  color: var(--color-blue);
}

.contact-item a:hover {
  color: var(--color-navy);
}

.footer-copy {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.4);
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

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

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

  .tech-card--patent {
    grid-column: span 2;
  }

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

  .business-card:last-child {
    grid-column: 1 / -1;
  }

  .diff-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .benefits-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .targets-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .about-cards {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 900px) {
  .about-main {
    grid-template-columns: 1fr;
  }

  .about-visual {
    order: -1;
  }

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

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

  .targets-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-keywords {
    grid-template-columns: 1fr;
  }

  .hero::before,
  .hero::after {
    opacity: 0.6;
  }

  .workflow-ambience {
    inset: -12px 0;
  }

  .workflow-blur-1 {
    width: 140px;
    height: 140px;
    opacity: 0.7;
  }

  .workflow-blur-2 {
    width: 120px;
    height: 120px;
    opacity: 0.6;
  }

  .workflow-network-ring {
    width: 300px;
    height: 300px;
    opacity: 0.7;
  }

  .workflow-panel {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    height: auto;
    max-width: 400px;
    padding: 24px 20px;
  }

  .workflow-grid-bg {
    border-radius: var(--radius-md);
  }

  .workflow-deco-ring,
  .workflow-deco-dots,
  .workflow-deco-data-tl,
  .workflow-curves,
  .workflow-center-glow,
  .workflow-ring,
  .workflow-lines {
    display: none;
  }

  .workflow-center {
    position: relative;
    top: auto;
    left: auto;
    transform: none;
    width: 88px;
    height: 88px;
    margin: 0 auto 20px;
    flex-shrink: 0;
  }

  .workflow-center::after {
    content: "";
    position: absolute;
    bottom: -18px;
    left: 50%;
    transform: translateX(-50%);
    width: 1px;
    height: 16px;
    background: linear-gradient(180deg, rgba(43, 108, 176, 0.4), rgba(43, 108, 176, 0.15));
  }

  .workflow-node {
    position: relative;
    top: auto;
    left: auto;
    right: auto;
    bottom: auto;
    transform: none;
    width: 100%;
    white-space: normal;
    margin-bottom: 0;
  }

  .workflow-node::before {
    content: "";
    display: block;
    width: 1px;
    height: 16px;
    margin: 0 auto 12px;
    background: linear-gradient(180deg, rgba(43, 108, 176, 0.4), rgba(43, 108, 176, 0.1));
  }

  .workflow-center + .workflow-node::before {
    display: none;
  }

  .workflow-node + .workflow-node {
    margin-top: 4px;
  }

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

  .contact-wrapper {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  .logo-img {
    height: 34px;
  }

  .nav-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition), opacity var(--transition), visibility var(--transition);
  }

  .nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-list {
    flex-direction: column;
    padding: 16px;
    gap: 4px;
  }

  .nav-link {
    width: 100%;
    padding: 14px 16px;
    text-align: left;
  }

  .section {
    padding: 72px 0;
  }

  .portfolio-grid,
  .portfolio-grid-2 {
    grid-template-columns: 1fr;
  }

  .portfolio-grid-1 {
    max-width: none;
  }

  .portfolio-categories {
    gap: 40px;
  }

  .portfolio-logo-wrap {
    height: 100px;
    padding: 10px 12px;
    margin-bottom: 14px;
  }

  .portfolio-logo {
    max-width: 100%;
    max-height: 80px;
  }

  .portfolio-logo-wrap--signnow .portfolio-logo {
    max-height: 84px;
  }

  .portfolio-logo-wrap--redribbon .portfolio-logo {
    max-height: 74px;
  }

  .about-cards {
    grid-template-columns: 1fr;
  }

  .diff-grid,
  .benefits-grid {
    grid-template-columns: 1fr;
  }

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

  .trust-panel {
    flex-direction: column;
    text-align: center;
    padding: 24px 20px;
  }

  .highlights-bar {
    gap: 8px;
    padding: 16px 12px;
  }

  .highlight-chip {
    white-space: normal;
    text-align: center;
  }

  .tech-visual-panel {
    margin-bottom: 28px;
  }

  .highlight-card:last-child {
    grid-column: auto;
  }

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

  .tech-card--patent {
    grid-column: auto;
  }

  .patent-highlight {
    flex-direction: column;
    text-align: center;
    padding: 14px 16px;
  }

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

  .business-card:last-child {
    grid-column: auto;
  }

  .timeline-item {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .timeline-item:not(:last-child)::before {
    left: 16px;
    top: 40px;
  }

  .timeline-year {
    text-align: left;
    padding-left: 0;
  }

  .hide-mobile {
    display: none;
  }

  .hero {
    padding-top: calc(var(--header-height) + 40px);
    padding-bottom: 36px;
  }

  .hero-title {
    gap: 4px;
  }

  .hero-desc {
    margin-bottom: 24px;
  }

  .hero-keywords {
    margin-top: 24px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .workflow-panel {
    max-width: 100%;
    padding: 20px 16px;
  }

  .workflow-node {
    padding: 12px 14px;
    font-size: 0.85rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .solution-card {
    padding: 24px;
  }

  .contact-card {
    padding: 24px;
  }
}