/* ============================================================
   Infirst Global — Main Stylesheet
   Brand Colors:
   - Primary Orange:    #F5A623
   - Primary Red-Brown: #8B2500
   - Charcoal:          #3D3D3D
   - Light Gray:        #9B9B9B
   - Background:        #FAFAF8
   ============================================================ */

/* ── Fonts ─────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');
@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard/dist/web/static/pretendard.css');

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

:root {
  --orange:     #F5A623;
  --redbrown:   #8B2500;
  --charcoal:   #3D3D3D;
  --gray:       #9B9B9B;
  --bg:         #FAFAF8;
  --bg-alt:     #F2EDE8;
  --bg-dark:    #3D3D3D;
  --white:      #FFFFFF;
  --border:     #E8E4DF;

  --font-en: 'Inter', sans-serif;
  --font-ko: 'Pretendard', 'Inter', sans-serif;

  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;

  --shadow-sm:  0 1px 4px rgba(61,61,61,0.06);
  --shadow-md:  0 4px 20px rgba(61,61,61,0.10);
  --shadow-lg:  0 12px 40px rgba(61,61,61,0.14);

  --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
  --transition-slow: 0.4s cubic-bezier(0.4,0,0.2,1);
}

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

body {
  font-family: var(--font-ko);
  background-color: var(--bg);
  color: var(--charcoal);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

:lang(en) body,
body.lang-en {
  font-family: var(--font-en);
}

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

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

ul { list-style: none; }

/* ── Typography ─────────────────────────────────────────── */
.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 1rem;
}

h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.25;
  color: var(--charcoal);
  word-break: keep-all;       /* 한글: 어절 단위로만 줄바꿈 */
  overflow-wrap: break-word;
}

h1 { font-size: clamp(2rem, 4.5vw, 3.5rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); }
h3 { font-size: clamp(1.1rem, 1.8vw, 1.4rem); }

/* 한글 본문 단어 단위 줄바꿈 */
p, li, a, label, span {
  word-break: keep-all;
  overflow-wrap: break-word;
}

/* ── Layout ─────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 2rem;
  padding-right: 2rem;
}

section {
  padding: 6rem 0;
}

/* Non-section interstitial strips sit above bg layers */
#global-ticker,
#numbers-strip,
#brand-marquee {
  position: relative;
  z-index: 2;
}

/* ── Utility ─────────────────────────────────────────────── */
.accent { color: var(--orange); }
.accent-red { color: var(--redbrown); }
.text-gray { color: var(--gray); }

/* ── Animation Base ──────────────────────────────────────── */
.fade-up {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-up-delay-1 { transition-delay: 0.1s; }
.fade-up-delay-2 { transition-delay: 0.2s; }
.fade-up-delay-3 { transition-delay: 0.3s; }
.fade-up-delay-4 { transition-delay: 0.4s; }

/* ============================================================
   NAVIGATION
   ============================================================ */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: background var(--transition), box-shadow var(--transition), padding var(--transition);
  padding: 1.25rem 0;
}

#navbar.scrolled {
  background: rgba(250, 250, 248, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--border), var(--shadow-sm);
  padding: 0.85rem 0;
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

/* Logo */
.navbar-logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  line-height: 1;
  cursor: pointer;
  text-decoration: none;
}

/* Image logo (real BI) */
.navbar-logo-img {
  height: 44px;
  width: auto;
  display: block;
  mix-blend-mode: multiply;   /* dissolves black bg on light backgrounds */
  transition: opacity var(--transition), transform var(--transition);
}

.navbar-logo:hover .navbar-logo-img {
  opacity: 0.88;
  transform: scale(0.97);
}

/* Scrolled state: logo on white bg — multiply still works perfectly */
#navbar.scrolled .navbar-logo-img {
  mix-blend-mode: multiply;
}

/* Footer logo image override */
.footer-logo-img {
  height: 40px;
  width: auto;
  display: block;
  /* On dark footer background, use a filter to invert/brighten */
  filter: brightness(0) invert(1);
  opacity: 0.85;
  transition: opacity var(--transition);
}

.footer-logo-img:hover {
  opacity: 1;
}

/* Fallback text logo parts (used in footer text rendering) */
.logo-main {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  font-family: var(--font-en);
}

.logo-in { color: var(--orange); }
.logo-first { color: var(--redbrown); }

.logo-global {
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gray);
  margin-top: 1px;
}

/* Nav Links */
.navbar-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex: 1;
  justify-content: center;
}

.navbar-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--charcoal);
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
  white-space: nowrap;
}

.navbar-links a:hover {
  color: var(--redbrown);
  background: rgba(245, 166, 35, 0.08);
}

/* Nav Right */
.navbar-right {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-shrink: 0;
}

#lang-toggle {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--charcoal);
  background: transparent;
  border: 1.5px solid var(--border);
  padding: 0.35rem 0.9rem;
  border-radius: 100px;
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition), background var(--transition);
  font-family: var(--font-en);
}

#lang-toggle:hover {
  border-color: var(--orange);
  color: var(--orange);
  background: rgba(245, 166, 35, 0.06);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--charcoal);
  border-radius: 2px;
  transition: all var(--transition);
}

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

/* Mobile Nav */
.mobile-nav {
  display: none;
  flex-direction: column;
  background: rgba(250, 250, 248, 0.98);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--border);
  padding: 1rem 0;
}

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

.mobile-nav a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--charcoal);
  padding: 0.85rem 2rem;
  border-bottom: 1px solid var(--border);
  transition: color var(--transition), background var(--transition);
}

.mobile-nav a:hover {
  color: var(--redbrown);
  background: rgba(245, 166, 35, 0.06);
}

/* ============================================================
   HERO SECTION — layout fully in visual.css
   ============================================================ */
#hero {
  position: relative;
  overflow: hidden;
  padding: 0;
  min-height: 100vh;
}

.hero-bg-pattern {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero-bg-circle {
  position: absolute;
  border-radius: 50%;
  opacity: 0.045;
}

.hero-bg-circle-1 {
  width: 700px;
  height: 700px;
  background: var(--orange);
  right: -200px;
  top: -150px;
}

.hero-bg-circle-2 {
  width: 400px;
  height: 400px;
  background: var(--redbrown);
  right: 100px;
  top: 200px;
}

.hero-bg-line {
  position: absolute;
  top: 0; bottom: 0;
  left: 0; right: 0;
  background: repeating-linear-gradient(
    90deg,
    transparent,
    transparent 80px,
    rgba(61,61,61,0.018) 80px,
    rgba(61,61,61,0.018) 81px
  );
}

.hero-content, .hero-left {
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(245, 166, 35, 0.1);
  border: 1px solid rgba(245, 166, 35, 0.25);
  border-radius: 100px;
  padding: 0.35rem 1rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--orange);
  letter-spacing: 0.06em;
  margin-bottom: 1.5rem;
}

/* live-dot now replaces the ::before pulse */

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.4); }
}

/* Hero h1: 절반 컬럼(~560px) 안에서 2줄로 깔끔하게 */
#hero h1 {
  font-size: clamp(1.9rem, 3.2vw, 2.8rem);
  line-height: 1.25;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
  word-break: keep-all;
}

.hero-subtitle {
  font-size: clamp(0.95rem, 1.6vw, 1.1rem);
  color: var(--gray);
  max-width: 520px;
  line-height: 1.8;
  margin-bottom: 2.5rem;
  word-break: keep-all;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0;
}

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--orange);
  color: var(--white);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  letter-spacing: 0.01em;
}

.btn-primary:hover {
  background: var(--redbrown);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(139,37,0,0.22);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  color: var(--charcoal);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border);
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition), background var(--transition), transform var(--transition);
}

.btn-secondary:hover {
  border-color: var(--charcoal);
  background: rgba(61,61,61,0.04);
  transform: translateY(-2px);
}

.btn-outline-orange {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  color: var(--orange);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--orange);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), transform var(--transition);
}

.btn-outline-orange:hover {
  background: var(--orange);
  color: var(--white);
  transform: translateY(-2px);
}

.btn-disabled {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--border);
  color: var(--gray);
  font-weight: 600;
  font-size: 0.875rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  border: none;
  cursor: not-allowed;
  opacity: 0.6;
}

.hero-scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--gray);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  animation: scrollBounce 2.5s infinite;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--orange), transparent);
}

@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* ============================================================
   ABOUT SECTION
   ============================================================ */
#about {
  background: var(--white);
}

.about-grid {
  display: grid;
  grid-template-columns: 55% 45%;
  gap: 5rem;
  align-items: center;
}

.about-text h2 {
  font-size: clamp(1.45rem, 2.8vw, 2.1rem); /* 야보다 작게: 한글 제목에 최적화 */
  margin-bottom: 1.5rem;
  letter-spacing: -0.025em;
  line-height: 1.4;
  word-break: keep-all;
}

.about-text h2 span {
  display: block;
  color: var(--orange);
  margin-top: 0.25em;
  font-size: 1em; /* 본문과 동일 크기 유지 */
}

.about-text p {
  color: var(--gray);
  line-height: 1.85;
  margin-bottom: 1.1rem;
  word-break: keep-all;
  font-size: 0.95rem;
}

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

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}

.stat-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.75rem 1.25rem;
  text-align: center;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.stat-card:hover {
  border-color: var(--orange);
  box-shadow: var(--shadow-md);
}

.stat-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--orange);
  font-family: var(--font-en);
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 0.4rem;
}

.stat-label {
  font-size: 0.78rem;
  color: var(--gray);
  font-weight: 500;
  letter-spacing: 0.04em;
}

/* Decorative element */
.about-visual {
  position: relative;
}

.about-visual-box {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
}

.about-visual-box::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--orange), var(--redbrown));
}

.about-flow {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.flow-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}

.flow-item:last-child { border-bottom: none; }

.flow-num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(245, 166, 35, 0.1);
  color: var(--orange);
  font-size: 0.78rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-family: var(--font-en);
}

.flow-text {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--charcoal);
}

.flow-sub {
  font-size: 0.78rem;
  color: var(--gray);
}

/* ============================================================
   PHILOSOPHY SECTION
   ============================================================ */
#philosophy {
  background: var(--bg);
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-header h2 {
  letter-spacing: -0.02em;
}

.philosophy-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.philosophy-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 2rem 1.75rem;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  cursor: default;
}

.philosophy-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(245, 166, 35, 0.3);
}

.philosophy-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(245, 166, 35, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.philosophy-icon svg {
  width: 20px;
  height: 20px;
  stroke: var(--orange);
  fill: none;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.philosophy-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
}

.philosophy-card p {
  font-size: 0.875rem;
  color: var(--gray);
  line-height: 1.7;
}

/* ============================================================
   STRUCTURE SECTION
   ============================================================ */
#structure {
  background: var(--white);
}

.structure-platform {
  background: linear-gradient(135deg, var(--charcoal) 0%, #2a2a2a 100%);
  border-radius: var(--radius-md);
  padding: 2rem 2.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2.5rem;
  position: relative;
  overflow: hidden;
}

.structure-platform::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--orange), var(--redbrown));
}

.platform-label-group {
  display: flex;
  flex-direction: column;
}

.platform-name {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--white);
  font-family: var(--font-en);
  letter-spacing: -0.02em;
}

.platform-name .p-in { color: var(--orange); }
.platform-name .p-first { color: var(--orange); opacity: 0.85; }
.platform-name .p-global { color: rgba(255,255,255,0.7); }

.platform-sub {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.4);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 0.25rem;
}

.platform-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(245, 166, 35, 0.15);
  border: 1px solid rgba(245, 166, 35, 0.3);
  border-radius: 100px;
  padding: 0.4rem 1rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--orange);
  letter-spacing: 0.06em;
}

/* Connector */
.structure-connector {
  display: flex;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.connector-line {
  width: 1px;
  height: 2rem;
  background: linear-gradient(to bottom, var(--orange), var(--border));
}

/* Structure Grid */
.structure-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.structure-col {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow var(--transition);
}

.structure-col:hover {
  box-shadow: var(--shadow-md);
}

.structure-col-header {
  background: var(--white);
  border-bottom: 2px solid var(--orange);
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.structure-col-header svg {
  width: 16px;
  height: 16px;
  stroke: var(--orange);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}

.structure-col-header span {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--charcoal);
}

.structure-col-items {
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.structure-chip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  text-decoration: none;
  color: inherit;
}

.structure-chip.clickable {
  cursor: pointer;
}

.structure-chip.clickable:hover {
  border-color: var(--orange);
  box-shadow: var(--shadow-sm);
}

.structure-chip.clickable:hover .chip-ext {
  opacity: 1;
  transform: translateX(0);
}

.structure-chip.disabled-chip {
  opacity: 0.55;
  cursor: not-allowed;
}

.chip-info { display: flex; flex-direction: column; gap: 1px; }

.chip-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--charcoal);
}

.chip-sub {
  font-size: 0.72rem;
  color: var(--gray);
}

.chip-ext {
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity var(--transition), transform var(--transition);
  color: var(--orange);
  font-size: 0.75rem;
}

.chip-tag {
  font-size: 0.65rem;
  font-weight: 600;
  background: rgba(245,166,35,0.1);
  color: var(--orange);
  border-radius: 100px;
  padding: 0.2rem 0.6rem;
  letter-spacing: 0.06em;
}

.chip-tag-gray {
  font-size: 0.65rem;
  font-weight: 600;
  background: rgba(155,155,155,0.1);
  color: var(--gray);
  border-radius: 100px;
  padding: 0.2rem 0.6rem;
  letter-spacing: 0.06em;
}

/* ============================================================
   BRANDS SECTION
   ============================================================ */
#brands {
  background: var(--bg);
}

.brands-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.brand-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.brand-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(245, 166, 35, 0.25);
}

.brand-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 60px;
  height: 3px;
  background: var(--orange);
  border-radius: 0 0 var(--radius-sm) 0;
}

.brand-card.placeholder {
  border-style: dashed;
  background: transparent;
}

.brand-card.placeholder::before {
  background: var(--gray);
}

.brand-category {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 0.75rem;
}

.brand-card.placeholder .brand-category { color: var(--gray); }

.brand-name {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  font-family: var(--font-en);
}

.brand-card.placeholder .brand-name { color: var(--gray); }

.brand-desc {
  font-size: 0.9rem;
  color: var(--gray);
  line-height: 1.75;
  margin-bottom: 2rem;
}

.brand-greenbite-visual {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

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

.brand-dot-green {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #4CAF50;
}

.brand-url {
  font-size: 0.75rem;
  color: var(--gray);
  font-family: var(--font-en);
}

/* ============================================================
   BUSINESS UNITS SECTION
   ============================================================ */
#business {
  background: var(--white);
}

.business-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.business-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 2.25rem 2rem;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  cursor: default;
}

.business-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(245, 166, 35, 0.25);
}

.business-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--white);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  transition: border-color var(--transition), background var(--transition);
}

.business-card:hover .business-icon {
  border-color: var(--orange);
  background: rgba(245, 166, 35, 0.06);
}

.business-icon svg {
  width: 22px;
  height: 22px;
  stroke: var(--charcoal);
  fill: none;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: stroke var(--transition);
}

.business-card:hover .business-icon svg {
  stroke: var(--orange);
}

.business-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.business-card p {
  font-size: 0.875rem;
  color: var(--gray);
  line-height: 1.75;
}

/* ============================================================
   TECHNOLOGY SECTION
   ============================================================ */
#technology {
  background: var(--charcoal);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

#technology::before {
  content: '';
  position: absolute;
  top: -200px; right: -200px;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: rgba(245, 166, 35, 0.04);
  pointer-events: none;
}

#technology .section-label {
  color: rgba(245, 166, 35, 0.8);
}

.tech-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.tech-text h2 {
  color: var(--white);
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}

.tech-text p {
  color: rgba(255,255,255,0.55);
  line-height: 1.8;
  margin-bottom: 2rem;
}

.tech-features {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 2rem;
}

.tech-feature {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition), background var(--transition);
}

.tech-feature:hover {
  border-color: rgba(245, 166, 35, 0.3);
  background: rgba(245, 166, 35, 0.04);
}

.tech-feature-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--orange);
  margin-top: 0.4rem;
  flex-shrink: 0;
}

.tech-feature-text h4 {
  color: var(--white);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.2rem;
}

.tech-feature-text p {
  color: rgba(255,255,255,0.45);
  font-size: 0.8rem;
  line-height: 1.5;
  margin: 0;
}

.tech-visual {
  position: relative;
}

.tech-card-visual {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
}

.tech-card-visual::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--orange), transparent);
}

.tech-logo-text {
  font-size: 1.6rem;
  font-weight: 800;
  font-family: var(--font-en);
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
  color: var(--white);
}

.tech-logo-sub {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.3);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 2rem;
}

.tech-stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.08);
}

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

.tech-stat-val {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--orange);
  font-family: var(--font-en);
  letter-spacing: -0.02em;
}

.tech-stat-lbl {
  font-size: 0.7rem;
  color: rgba(255,255,255,0.35);
  margin-top: 0.2rem;
  letter-spacing: 0.06em;
}

/* ============================================================
   PARTNERS SECTION
   ============================================================ */
#partners {
  background: var(--bg);
}

.partners-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.partner-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.partner-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(245, 166, 35, 0.2);
}

.partner-card.placeholder-card {
  border-style: dashed;
  background: transparent;
}

.partner-card.placeholder-card:hover {
  border-color: var(--gray);
}

.partner-logo-area {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.partner-logo-box {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--charcoal), #555);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--white);
  font-family: var(--font-en);
  flex-shrink: 0;
}

.partner-logo-box.placeholder-logo {
  background: var(--bg-alt);
  color: var(--gray);
  font-size: 1.2rem;
}

.partner-name-area {
  display: flex;
  flex-direction: column;
}

.partner-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--charcoal);
  font-family: var(--font-en);
}

.partner-card.placeholder-card .partner-name { color: var(--gray); }

.partner-tag {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--orange);
  margin-top: 2px;
}

.partner-card.placeholder-card .partner-tag { color: var(--gray); }

.partner-desc {
  font-size: 0.855rem;
  color: var(--gray);
  line-height: 1.7;
  flex: 1;
}

/* ============================================================
   PARTNERSHIP SECTION
   ============================================================ */
#partnership {
  background: var(--white);
}

.partnership-inner {
  display: grid;
  grid-template-columns: 55% 45%;
  gap: 5rem;
  align-items: start;
}

.partnership-text h2 {
  font-size: clamp(1.45rem, 2.8vw, 2.1rem); /* 야보다 작게: 한글 제목에 최적화 */
  letter-spacing: -0.025em;
  margin-bottom: 1.5rem;
  line-height: 1.4;
  word-break: keep-all;
}

.partnership-text h2 span {
  display: block;
  color: var(--orange);
  margin-top: 0.25em;
  font-size: 1em;
}

.partnership-text p {
  color: var(--gray);
  line-height: 1.85;
  margin-bottom: 2rem;
  word-break: keep-all;
  font-size: 0.95rem;
}

.partnership-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.partnership-visual {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}

.partner-value-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.partner-value-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.pv-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(245, 166, 35, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.pv-icon svg {
  width: 16px;
  height: 16px;
  stroke: var(--orange);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.pv-text h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.2rem;
  word-break: keep-all;
}

.pv-text p {
  font-size: 0.8rem;
  color: var(--gray);
  line-height: 1.65;
  margin: 0;
  word-break: keep-all;
}

/* ============================================================
   CONTACT SECTION
   ============================================================ */
#contact {
  background: var(--bg);
}

.contact-grid {
  display: grid;
  grid-template-columns: 38% 1fr;
  gap: 5rem;
  align-items: start;
}

.contact-info h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem); /* 콘택트는 상대적으로 넓어 큰 사이즈 가능 */
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
  line-height: 1.2;
  word-break: keep-all;
}

.contact-info p {
  color: var(--gray);
  line-height: 1.85;
  margin-bottom: 2rem;
  word-break: keep-all;
  font-size: 0.9rem;
}

.contact-detail {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.contact-detail-item {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
}

.cd-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(245, 166, 35, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.cd-icon svg {
  width: 16px;
  height: 16px;
  stroke: var(--orange);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.cd-text h4 {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--charcoal);
  margin-bottom: 0.15rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.cd-text p {
  font-size: 0.85rem;
  color: var(--gray);
  margin: 0;
  line-height: 1.5;
}

/* Contact Form */
.contact-form-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--charcoal);
  margin-bottom: 0.5rem;
  letter-spacing: 0.03em;
}

.form-control {
  width: 100%;
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  color: var(--charcoal);
  font-family: var(--font-ko);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  appearance: none;
}

.form-control:focus {
  border-color: var(--orange);
  box-shadow: 0 0 0 3px rgba(245, 166, 35, 0.12);
  background: var(--white);
}

textarea.form-control {
  min-height: 130px;
  resize: vertical;
}

select.form-control {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='none' stroke='%239B9B9B' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round' d='M2 4l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

.form-submit-row {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.contact-note {
  font-size: 0.78rem;
  color: var(--gray);
  text-align: center;
}

.form-success {
  display: none;
  text-align: center;
  padding: 2rem;
  color: var(--charcoal);
}

.form-success-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(245, 166, 35, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
}

.form-success-icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--orange);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ============================================================
   FOOTER
   ============================================================ */
#footer {
  background: #242424;
  color: rgba(255,255,255,0.65);
  padding: 5rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-brand {}

.footer-logo {
  margin-bottom: 1rem;
}

.footer-logo .logo-main { color: var(--white); }
.footer-logo .logo-in { color: var(--orange); }
.footer-logo .logo-first { color: rgba(139,37,0,0.9); }
.footer-logo .logo-global { color: rgba(255,255,255,0.35); }

.footer-tagline {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.35);
  line-height: 1.6;
  max-width: 220px;
}

.footer-col h4 {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  margin-bottom: 1rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-links a {
  font-size: 0.855rem;
  color: rgba(255,255,255,0.5);
  transition: color var(--transition);
}

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

.footer-link-disabled {
  font-size: 0.855rem;
  color: rgba(255,255,255,0.25);
  cursor: not-allowed;
  position: relative;
}

.footer-link-disabled .tooltip {
  display: none;
  position: absolute;
  bottom: 100%;
  left: 0;
  background: rgba(0,0,0,0.8);
  color: rgba(255,255,255,0.7);
  font-size: 0.7rem;
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
  white-space: nowrap;
  pointer-events: none;
}

.footer-link-disabled:hover .tooltip {
  display: block;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 2rem;
  font-size: 0.78rem;
  color: rgba(255,255,255,0.25);
}

.footer-bottom-right {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

/* ============================================================
   RESPONSIVE — Tablet & Mobile
   ============================================================ */
@media (max-width: 1024px) {
  .philosophy-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* 태블릿: 단일 컬럼 전환 */
  .about-grid,
  .tech-grid,
  .partnership-inner,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  /* 태블릿 단일 컬럼 시 텍스트 너비 제한 해제 */
  .about-text h2,
  .partnership-text h2 {
    font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  section { padding: 5rem 0; }

  .navbar-logo-img { height: 36px; }
  .footer-logo-img { height: 34px; }

  .navbar-links { display: none; }
  .hamburger { display: flex; }

  .structure-grid,
  .brands-grid,
  .business-grid,
  .partners-grid {
    grid-template-columns: 1fr;
  }

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

  .form-row { grid-template-columns: 1fr; }

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

  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .hero-ctas {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
  }
}

@media (max-width: 480px) {
  .container { padding-left: 1.25rem; padding-right: 1.25rem; }

  .about-stats {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

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