/* ============================================================
   대성화스너 — 메인 페이지 페이지 고유 스타일 (원본 전체)
   ============================================================ */


  :root {
    --bg: #FFFFFF;
    --bg-soft: #F6F9F7;
    --bg-tint: #ECF5EF;
    --bg-dark: #0B1410;
    --border: #E5E9E6;
    --border-hover: #CCD5CF;
    --green: #16A34A;
    --green-bright: #22C55E;
    --green-soft: #4ADE80;
    --green-tint: #DCFCE7;
    --green-bg: #F0FDF4;
    --green-dark: #0F7A37;
    --text-1: #0B1410;
    --text-2: #3F4A42;
    --text-3: #6B7A70;
    --text-4: #9AA69E;
    --text-on-dark: #F5F7FA;
    --text-on-dark-2: #B6BECC;
    --shadow-sm: 0 1px 2px rgba(11, 20, 16, 0.04);
    --shadow: 0 4px 16px rgba(11, 20, 16, 0.06);
    --shadow-lg: 0 12px 40px rgba(11, 20, 16, 0.08);
    --shadow-xl: 0 24px 80px rgba(11, 20, 16, 0.12);
    --font-sans: 'Pretendard Variable', 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, 'Apple SD Gothic Neo', 'Noto Sans KR', sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', 'IBM Plex Mono', Menlo, Monaco, Consolas, monospace;
    --ease-expo: cubic-bezier(0.16, 1, 0.3, 1);
  }

  * { margin: 0; padding: 0; box-sizing: border-box; }
  em { font-style: normal; }
  html { scroll-behavior: auto; }
  body {
    background: var(--bg);
    color: var(--text-1);
    font-family: var(--font-sans);
    font-weight: 400;
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    cursor: none;
    /* Korean typography — 자연스러운 줄바꿈 */
    word-break: keep-all;
    overflow-wrap: break-word;
  }
  /* Headings & paragraphs — 균형잡힌 줄바꿈 (최신 브라우저) */
  h1, h2, h3, h4, h5, h6 { text-wrap: balance; }
  p, li, dd, blockquote { text-wrap: pretty; }
  @media (pointer: coarse) { body { cursor: default; } }
  ::selection { background: var(--green); color: #fff; }

  /* GRAIN OVERLAY */
  .grain {
    position: fixed; inset: 0;
    pointer-events: none; z-index: 9998;
    opacity: 0.035;
    mix-blend-mode: multiply;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='300' height='300'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' seed='5'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  }

  /* CUSTOM CURSOR */
  .cursor-dot, .cursor-ring {
    position: fixed; top: 0; left: 0;
    pointer-events: none; z-index: 10000;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    mix-blend-mode: difference;
  }
  .cursor-dot {
    width: 6px; height: 6px;
    background: #fff;
    transition: width 0.2s, height 0.2s, background 0.2s;
  }
  .cursor-ring {
    width: 32px; height: 32px;
    border: 1.2px solid rgba(255, 255, 255, 0.55);
    transition: width 0.3s var(--ease-expo), height 0.3s var(--ease-expo), border-color 0.3s, transform 0.12s linear;
  }
  .cursor-ring.hover {
    width: 56px; height: 56px;
    border-color: var(--green-soft);
    background: rgba(74, 222, 128, 0.06);
  }
  .cursor-dot.hover {
    width: 4px; height: 4px;
    background: var(--green-soft);
  }
  @media (pointer: coarse) {
    .cursor-dot, .cursor-ring { display: none; }
  }

  /* LOADING SCREEN */
  .loader {
    position: fixed; inset: 0;
    background: var(--bg-dark);
    z-index: 9999;
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    transition: opacity 0.8s var(--ease-expo), visibility 0.8s;
  }
  .loader.done { opacity: 0; visibility: hidden; }
  .loader-logo {
    width: 80px; height: 80px;
    margin-bottom: 40px;
  }
  .loader-logo svg { width: 100%; height: 100%; color: var(--green-soft); }
  .loader-logo svg path {
    stroke-dasharray: 200;
    stroke-dashoffset: 200;
    animation: drawLogo 1.6s var(--ease-expo) forwards;
  }
  @keyframes drawLogo { to { stroke-dashoffset: 0; } }
  .loader-text {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.3em;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 20px;
    text-transform: uppercase;
  }
  .loader-counter {
    font-size: 64px;
    color: #fff;
    line-height: 1;
    margin-bottom: 32px;
  }
  .loader-bar {
    width: 240px; height: 1px;
    background: rgba(255, 255, 255, 0.1);
    position: relative; overflow: hidden;
  }
  .loader-bar-fill {
    position: absolute; top: 0; left: 0;
    height: 100%;
    background: var(--green-soft);
    width: 0%;
    transition: width 0.3s linear;
  }

  /* SCROLL PROGRESS */
  .scroll-progress {
    position: fixed; top: 0; left: 0;
    height: 2px;
    background: var(--green);
    z-index: 200;
    width: 0%;
    transition: width 0.1s linear;
  }

  /* =================== NAV =================== */
  .nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    padding: 18px 48px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0);
    backdrop-filter: blur(0px);
    -webkit-backdrop-filter: blur(0px);
    border-bottom: 1px solid transparent;
    z-index: 100;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  }
  .nav.dark-mode { background: rgba(11, 20, 16, 0); }
  .nav.dark-mode .nav-logo,
  .nav.dark-mode .nav-menu a,
  .nav.dark-mode .lang-toggle {
    color: rgba(255, 255, 255, 0.92);
  }
  .nav.scrolled {
    padding: 12px 48px;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom-color: var(--border);
  }
  .nav.scrolled.dark-mode {
    background: rgba(11, 20, 16, 0.85);
    border-bottom-color: rgba(255, 255, 255, 0.08);
  }
  .nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 17px;
    color: var(--text-1);
    letter-spacing: -0.01em;
    transition: color 0.3s;
  }
  .nav-logo svg { width: 28px; height: 28px; }
  .nav-menu { display: flex; gap: 36px; list-style: none; }
  .nav-menu a {
    color: var(--text-2);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.25s;
    position: relative;
  }
  .nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -6px; left: 0;
    width: 0; height: 1px;
    background: currentColor;
    transition: width 0.3s var(--ease-expo);
  }
  .nav-menu a:hover::after { width: 100%; }
  .nav-menu a:hover { color: var(--green); }
  .nav.dark-mode .nav-menu a:hover { color: var(--green-soft); }
  .nav-right { display: flex; align-items: center; gap: 20px; }
  .lang-toggle {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
    color: var(--text-3);
    letter-spacing: 0.1em;
    cursor: none;
    transition: color 0.25s;
  }
  .lang-toggle:hover { color: var(--green); }

  /* BUTTONS */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border-radius: 10px;
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 14px;
    border: none;
    cursor: none;
    transition: all 0.3s var(--ease-expo);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
    text-decoration: none;
  }
  .btn-nav-cta {
    padding: 10px 20px;
    background: var(--text-1);
    color: #fff;
    font-size: 13px;
    border-radius: 8px;
  }
  .nav.dark-mode .btn-nav-cta {
    background: #fff;
    color: var(--text-1);
  }
  .btn-nav-cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 24px rgba(22, 163, 74, 0.3);
    background: var(--green);
    color: #fff;
  }
  .btn-hero {
    padding: 16px 30px;
    font-size: 15px;
    font-weight: 700;
    border-radius: 10px;
  }
  .btn-hero-primary {
    background: var(--green);
    color: #FFFFFF;
    box-shadow: 0 8px 24px rgba(22, 163, 74, 0.35);
  }
  .btn-hero-primary:hover {
    background: var(--green-bright);
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(22, 163, 74, 0.5);
  }
  .btn-hero-ghost {
    background: rgba(255, 255, 255, 0.08);
    color: #FFFFFF;
    border: 1px solid rgba(255, 255, 255, 0.18);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
  }
  .btn-hero-ghost:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
  }

  /* =================== HERO =================== */
  .hero {
    position: relative;
    height: 100vh;
    min-height: 720px;
    overflow: hidden;
    background: var(--bg-dark);
  }
  .hero-image-wrap {
    position: absolute;
    inset: 0;
    z-index: 1;
    overflow: hidden;
  }
  .hero-image {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-image: url('https://images.unsplash.com/photo-1706061921962-41b17b8a5053?auto=format&fit=crop&w=2400&q=80');
    will-change: transform;
    transform: scale(1.15);
  }
  .hero-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background:
      linear-gradient(180deg, rgba(11, 20, 16, 0.15) 0%, rgba(11, 20, 16, 0.25) 60%, rgba(11, 20, 16, 0.9) 100%),
      linear-gradient(90deg, rgba(11, 20, 16, 0.85) 0%, rgba(11, 20, 16, 0.4) 45%, rgba(11, 20, 16, 0.1) 100%),
      radial-gradient(ellipse at 25% 45%, rgba(22, 163, 74, 0.2) 0%, transparent 55%);
  }
  .hero-image-fallback {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #0B1410 0%, #102820 40%, #16402C 100%);
    background-size: cover;
  }
  .hero-image-fallback::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
      linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at 30% 40%, black 10%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse at 30% 40%, black 10%, transparent 75%);
  }
  .hero-canvas {
    position: absolute;
    inset: 0;
    z-index: 1;
    opacity: 0;
    pointer-events: none;
    transition: opacity 2s var(--ease-expo);
    mix-blend-mode: screen;
  }
  .hero-canvas.ready { opacity: 0.35; }

  .hero-content {
    position: relative;
    z-index: 2;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 48px;
    height: 100%;
    display: flex;
    align-items: center;
  }
  .hero-text-wrap { max-width: 820px; }

  .hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 7px 16px;
    border: 1px solid rgba(74, 222, 128, 0.4);
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
    font-family: var(--font-mono);
    color: var(--green-soft);
    letter-spacing: 0.1em;
    margin-bottom: 36px;
    background: rgba(22, 163, 74, 0.1);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    opacity: 0;
    transform: translateY(20px);
  }
  .hero-eyebrow-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--green-soft);
    box-shadow: 0 0 12px var(--green-soft);
    animation: pulse 2s ease-in-out infinite;
  }
  @keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(0.85); }
  }

  .hero-headline {
    font-size: clamp(48px, 7vw, 100px);
    font-weight: 800;
    line-height: 0.98;
    letter-spacing: -0.04em;
    margin-bottom: 32px;
    color: #FFFFFF;
  }
  .hero-headline .line { display: block; overflow: hidden; padding-bottom: 0.12em; }
  .hero-headline .line-inner {
    display: inline-block;
    opacity: 0;
    transform: translateY(100%);
  }
  .hero-accent {
    color: var(--green-soft);
  }

  .hero-sub {
    font-size: clamp(17px, 1.4vw, 21px);
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.82);
    max-width: 580px;
    margin-bottom: 48px;
    font-weight: 400;
    opacity: 0;
    transform: translateY(20px);
  }

  .hero-cta {
    display: flex;
    gap: 14px;
    margin-bottom: 56px;
    flex-wrap: wrap;
    opacity: 0;
    transform: translateY(20px);
  }

  .hero-certs {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    opacity: 0;
  }
  .cert-chip {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 6px 12px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(8px);
    transition: all 0.25s ease;
  }
  .cert-chip::before {
    content: '';
    width: 5px; height: 5px;
    border-radius: 50%;
    background: var(--green-soft);
    box-shadow: 0 0 8px var(--green-soft);
  }
  .cert-chip:hover {
    background: rgba(74, 222, 128, 0.12);
    border-color: rgba(74, 222, 128, 0.4);
  }

  .hero-scroll-hint {
    position: absolute;
    bottom: 36px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    color: rgba(255, 255, 255, 0.55);
    font-size: 11px;
    font-family: var(--font-mono);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    animation: bounce 2.4s ease-in-out infinite;
  }
  .scroll-line {
    width: 1px; height: 32px;
    background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.6));
  }
  @keyframes bounce {
    0%, 100% { transform: translate(-50%, 0); opacity: 0.55; }
    50% { transform: translate(-50%, 6px); opacity: 0.8; }
  }

  /* =================== STORY (PINNED) =================== */
  .story-wrap {
    position: relative;
    height: 300vh;
    background: var(--bg-dark);
  }
  .story {
    position: sticky;
    top: 0;
    height: 100vh;
    width: 100%;
    overflow: hidden;
    background: var(--bg-dark);
  }
  .story-bg-layer {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 0.8s ease;
  }
  .story-bg-layer.active { opacity: 1; }
  .story-bg-layer::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(11, 20, 16, 0.9) 0%, rgba(11, 20, 16, 0.6) 50%, rgba(11, 20, 16, 0.7) 100%);
  }
  .story-bg-1 {
    background-image: url('https://images.unsplash.com/photo-1504328345606-18bbc8c9d7d1?auto=format&fit=crop&w=2400&q=80');
  }
  .story-bg-2 {
    background-image: url('https://images.unsplash.com/photo-1587293852726-70cdb56c2866?auto=format&fit=crop&w=2400&q=80');
  }
  .story-bg-3 {
    background-image: url('https://images.unsplash.com/photo-1581093588401-fbb62a02f120?auto=format&fit=crop&w=2400&q=80');
  }
  .story-bg-fallback { position: absolute; inset: 0; z-index: 0; }
  .story-bg-fallback-1 { background: radial-gradient(ellipse at 30% 50%, #1A0A05 0%, #0B1410 70%); }
  .story-bg-fallback-2 { background: radial-gradient(ellipse at 70% 40%, #041020 0%, #0B1410 70%); }
  .story-bg-fallback-3 { background: radial-gradient(ellipse at 50% 30%, #0F4028 0%, #0B1410 70%); }

  .story-inner {
    position: relative;
    z-index: 2;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 48px;
    height: 100%;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 80px;
    align-items: center;
  }
  .story-left { color: #FFFFFF; }
  .story-tag {
    font-size: 12px;
    font-weight: 600;
    font-family: var(--font-mono);
    color: var(--green-soft);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: 16px;
    display: block;
  }
  .story-title {
    font-size: clamp(38px, 4.8vw, 68px);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.03em;
    margin-bottom: 28px;
  }
  .story-title em {
    color: var(--green-soft);
    letter-spacing: -0.015em;
  }
  .story-desc {
    font-size: 18px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.72);
    max-width: 500px;
    margin-bottom: 40px;
  }
  .story-stats {
    display: flex;
    gap: 36px;
    padding-top: 28px;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    flex-wrap: wrap;
  }
  .story-stat-val {
    font-size: 36px;
    font-weight: 800;
    color: var(--green-soft);
    letter-spacing: -0.02em;
    font-variant-numeric: tabular-nums;
  }
  .story-stat-lbl {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.55);
    font-family: var(--font-mono);
    letter-spacing: 0.05em;
    margin-top: 4px;
  }

  .story-stages {
    display: flex;
    flex-direction: column;
    gap: 14px;
  }
  .stage {
    padding: 20px 24px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: all 0.5s ease;
  }
  .stage.active {
    border-color: var(--green-soft);
    background: rgba(74, 222, 128, 0.1);
    transform: translateX(12px);
  }
  .stage-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
  }
  .stage-num {
    font-size: 11px;
    font-family: var(--font-mono);
    color: rgba(255, 255, 255, 0.5);
    letter-spacing: 0.2em;
  }
  .stage.active .stage-num { color: var(--green-soft); }
  .stage-status {
    font-size: 10px;
    font-family: var(--font-mono);
    color: rgba(255, 255, 255, 0.4);
    letter-spacing: 0.15em;
    padding: 3px 8px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 4px;
  }
  .stage.active .stage-status {
    color: var(--green-soft);
    border-color: var(--green-soft);
  }
  .stage-name {
    font-size: 20px;
    font-weight: 700;
    color: #FFFFFF;
    margin-bottom: 6px;
    letter-spacing: -0.015em;
  }
  .stage-desc {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.65);
    line-height: 1.55;
  }

  /* =================== STATS =================== */
  .stats {
    position: relative;
    padding: 140px 48px;
    background: var(--bg);
    overflow: hidden;
  }
  .stats-hex {
    position: absolute;
    top: 0; right: 0;
    width: 600px; height: 600px;
    opacity: 0.045;
    pointer-events: none;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='120' height='104' viewBox='0 0 120 104'><path d='M60 0L120 34.6V69.3L60 104L0 69.3V34.6L60 0Z' fill='none' stroke='%2316A34A' stroke-width='1'/></svg>");
    background-size: 120px 104px;
  }
  .stats-inner {
    position: relative;
    max-width: 1280px;
    margin: 0 auto;
    z-index: 2;
  }
  .stats-eyebrow {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    font-family: var(--font-mono);
    color: var(--green);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: 20px;
    padding: 5px 12px;
    border: 1px solid var(--green-tint);
    border-radius: 100px;
    background: var(--green-bg);
  }
  .stats-heading {
    font-size: clamp(36px, 4.5vw, 56px);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.035em;
    margin-bottom: 20px;
    color: var(--text-1);
    max-width: 720px;
  }
  .stats-heading em {
    color: var(--green);
  }
  .stats-sub {
    font-size: 18px;
    color: var(--text-3);
    max-width: 620px;
    margin-bottom: 80px;
    line-height: 1.6;
  }
  .stats-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
  }
  .stat-card {
    position: relative;
    padding: 36px 28px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 18px;
    transition: all 0.4s var(--ease-expo);
    overflow: hidden;
  }
  .stat-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--green-bg) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.4s;
  }
  .stat-card:hover {
    transform: translateY(-6px);
    border-color: var(--green-tint);
    box-shadow: var(--shadow-xl);
  }
  .stat-card:hover::before { opacity: 1; }
  .stat-card > * { position: relative; z-index: 2; }
  .stat-icon {
    width: 40px; height: 40px;
    border-radius: 10px;
    background: var(--green-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    color: var(--green);
  }
  .stat-icon svg { width: 20px; height: 20px; }
  .stat-num {
    font-size: 44px;
    font-weight: 800;
    color: var(--text-1);
    line-height: 1;
    margin-bottom: 6px;
    letter-spacing: -0.02em;
    display: flex;
    align-items: baseline;
    gap: 4px;
    font-variant-numeric: tabular-nums;
  }
  .stat-num-suffix {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-3);
  }
  .stat-heading {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-1);
    margin-bottom: 4px;
  }
  .stat-desc {
    font-size: 12px;
    color: var(--text-3);
  }

  /* =================== QUALITY SPLIT =================== */
  .quality {
    padding: 140px 48px;
    background: var(--bg-soft);
    position: relative;
  }
  .quality-inner {
    max-width: 1280px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: flex-start;
  }
  .quality-left { position: sticky; top: 120px; }
  .quality-visual {
    position: relative;
    aspect-ratio: 4/5;
    border-radius: 24px;
    overflow: hidden;
    background-color: var(--bg-dark);
    background-size: cover;
    background-position: center;
    background-image:
      linear-gradient(rgba(11, 20, 16, 0.35), rgba(11, 20, 16, 0.65)),
      url('https://images.unsplash.com/photo-1581091226825-a6a2a5aee158?auto=format&fit=crop&w=1600&q=80');
    box-shadow: var(--shadow-xl);
  }
  .quality-visual::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='60' height='52' viewBox='0 0 60 52'><path d='M30 0L60 17.3V34.6L30 52L0 34.6V17.3L30 0Z' fill='none' stroke='rgba(74,222,128,0.18)' stroke-width='0.8'/></svg>");
    background-size: 60px 52px;
    opacity: 0.4;
  }
  .quality-visual::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 70% 30%, rgba(22, 163, 74, 0.25) 0%, transparent 55%);
  }
  .quality-visual-badge {
    position: absolute;
    top: 28px; left: 28px;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    background: rgba(11, 20, 16, 0.6);
    border: 1px solid rgba(74, 222, 128, 0.4);
    border-radius: 100px;
    color: var(--green-soft);
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.15em;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
  }
  .quality-visual-metric {
    position: absolute;
    bottom: 36px; left: 36px; right: 36px;
    z-index: 2;
    padding: 32px;
    background: rgba(11, 20, 16, 0.75);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 18px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
  }
  .qvm-label {
    font-family: var(--font-mono);
    font-size: 11px;
    color: rgba(255, 255, 255, 0.5);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: 16px;
  }
  .qvm-val {
    font-size: 80px;
    font-weight: 800;
    color: #fff;
    line-height: 1;
    margin-bottom: 20px;
    display: flex;
    align-items: baseline;
    gap: 8px;
    letter-spacing: -0.03em;
  }
  .qvm-unit {
    font-family: var(--font-mono);
    font-size: 18px;
    color: var(--green-soft);
    font-weight: 500;
  }
  .qvm-bar {
    height: 2px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 100px;
    margin-bottom: 14px;
    overflow: hidden;
  }
  .qvm-bar-fill {
    width: 100%; height: 100%;
    background: linear-gradient(90deg, var(--green-bright), var(--green-soft));
    border-radius: 100px;
    animation: barShine 2.5s infinite;
  }
  @keyframes barShine {
    0% { opacity: 0.6; } 50% { opacity: 1; } 100% { opacity: 0.6; }
  }
  .qvm-note { font-size: 12px; color: rgba(255, 255, 255, 0.55); }

  .quality-right-eyebrow {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    font-family: var(--font-mono);
    color: var(--green);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: 20px;
    padding: 5px 12px;
    border: 1px solid var(--green-tint);
    border-radius: 100px;
    background: var(--green-bg);
  }
  .quality-right-heading {
    font-size: clamp(34px, 4.2vw, 52px);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 20px;
  }
  .quality-right-heading em {
    color: var(--green);
    letter-spacing: -0.01em;
  }
  .quality-right-desc {
    font-size: 17px;
    color: var(--text-3);
    line-height: 1.65;
    margin-bottom: 48px;
  }
  .cert-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
  }
  .cert-item {
    padding: 26px 30px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 14px;
    transition: all 0.35s var(--ease-expo);
    opacity: 0;
    transform: translateX(30px);
  }
  .cert-item:hover {
    border-color: var(--green-tint);
    box-shadow: var(--shadow-lg);
    transform: translateX(-2px);
  }
  .cert-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 10px;
  }
  .cert-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-1);
    letter-spacing: -0.01em;
  }
  .cert-year {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-3);
    padding: 4px 10px;
    background: var(--bg-soft);
    border-radius: 100px;
  }
  .cert-desc {
    font-size: 14px;
    color: var(--text-2);
    line-height: 1.55;
  }

  /* =================== PRODUCTS (WHITE GRID) =================== */
  .products {
    padding: 140px 48px;
    background: var(--bg);
  }
  .section-head {
    max-width: 1280px;
    margin: 0 auto 60px;
  }
  .section-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    font-family: var(--font-mono);
    color: var(--green);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: 20px;
    padding: 5px 12px;
    border: 1px solid var(--green-tint);
    border-radius: 100px;
    background: var(--green-bg);
  }
  .section-title {
    font-size: clamp(36px, 4.5vw, 56px);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.035em;
    margin-bottom: 18px;
    color: var(--text-1);
  }
  .section-title em {
    color: var(--green);
    letter-spacing: -0.01em;
  }
  .section-desc {
    font-size: 17px;
    color: var(--text-3);
    line-height: 1.6;
    max-width: 620px;
  }
  .product-grid {
    max-width: 1280px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
  }
  .product-card {
    position: relative;
    padding: 36px 30px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 18px;
    transition: all 0.4s var(--ease-expo);
    overflow: hidden;
    cursor: none;
  }
  .product-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: var(--green);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
  }
  .product-card:hover {
    border-color: var(--green);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
  }
  .product-card:hover::before { transform: scaleX(1); }
  .product-icon-wrap {
    width: 44px; height: 44px;
    border-radius: 11px;
    background: var(--green-bg);
    border: 1px solid var(--green-tint);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
  }
  .product-icon-wrap svg { width: 22px; height: 22px; color: var(--green); }
  .product-name {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--text-1);
    letter-spacing: -0.01em;
  }
  .product-count {
    font-size: 11px;
    color: var(--text-3);
    font-family: var(--font-mono);
    margin-bottom: 16px;
    letter-spacing: 0.05em;
    font-weight: 600;
  }
  .product-desc {
    font-size: 13px;
    color: var(--text-2);
    line-height: 1.55;
  }

  /* =================== CLIENTS (SINGLE-ROW MARQUEE) =================== */
  .clients {
    padding: 120px 0;
    background: var(--bg);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    overflow: hidden;
  }
  .clients-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 48px 60px;
  }
  .clients-head {
    text-align: center;
    margin-bottom: 0;
  }
  .clients-eyebrow {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    font-family: var(--font-mono);
    color: var(--green);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: 20px;
    padding: 5px 12px;
    border: 1px solid var(--green-tint);
    border-radius: 100px;
    background: var(--green-bg);
  }
  .clients-title {
    font-size: clamp(32px, 4vw, 48px);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 14px;
    color: var(--text-1);
  }
  .clients-title em {
    color: var(--green);
    letter-spacing: -0.01em;
  }
  .clients-sub {
    font-size: 16px;
    color: var(--text-3);
    line-height: 1.6;
    max-width: 580px;
    margin: 0 auto;
  }

  /* Marquee */
  .marquee {
    position: relative;
    overflow: hidden;
    -webkit-mask-image: linear-gradient(90deg, transparent 0, black 100px, black calc(100% - 100px), transparent 100%);
    mask-image: linear-gradient(90deg, transparent 0, black 100px, black calc(100% - 100px), transparent 100%);
  }
  .marquee-track {
    display: flex;
    gap: 14px;
    width: max-content;
    animation: marqueeScroll 90s linear infinite;
  }
  .marquee:hover .marquee-track {
    animation-play-state: paused;
  }
  @keyframes marqueeScroll {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
  }

  /* Marquee Card */
  .marquee-card {
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    padding: 20px 28px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 14px;
    transition: all 0.3s ease;
    cursor: none;
    min-width: 200px;
  }
  .marquee-card:hover {
    border-color: var(--green-tint);
    background: var(--green-bg);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
  }
  .marquee-card-info {
    display: flex;
    flex-direction: column;
    gap: 3px;
    min-width: 0;
  }
  .marquee-card-name {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-1);
    letter-spacing: -0.01em;
    line-height: 1.2;
    white-space: nowrap;
  }
  .marquee-card-name-en {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
    color: var(--text-4);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    white-space: nowrap;
  }

  .clients-note {
    margin-top: 56px;
    text-align: center;
    font-size: 12px;
    color: var(--text-4);
    font-family: var(--font-mono);
    letter-spacing: 0.05em;
    padding: 0 48px;
  }

  /* =================== FOOTER CTA =================== */
  .footer-cta {
    position: relative;
    padding: 140px 48px;
    background: var(--bg-dark);
    overflow: hidden;
    text-align: center;
  }
  .footer-cta-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-image: linear-gradient(rgba(11, 20, 16, 0.8), rgba(11, 20, 16, 0.92)),
      url('https://images.unsplash.com/photo-1581092160607-ee22621dd758?auto=format&fit=crop&w=2400&q=80');
    opacity: 0.6;
  }
  .footer-cta-glow {
    position: absolute;
    top: -10%; left: 50%;
    transform: translateX(-50%);
    width: 100%;
    height: 70%;
    background: radial-gradient(ellipse at center, rgba(22, 163, 74, 0.2) 0%, transparent 60%);
  }
  .footer-cta-content {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
  }
  .footer-cta h2 {
    font-size: clamp(40px, 5vw, 72px);
    font-weight: 800;
    letter-spacing: -0.035em;
    margin-bottom: 24px;
    line-height: 1.1;
    color: #FFFFFF;
  }
  .footer-cta h2 .grad {
    color: var(--green-soft);
  }
  .footer-cta p {
    font-size: 19px;
    color: rgba(255, 255, 255, 0.72);
    margin-bottom: 48px;
    line-height: 1.6;
  }
  .footer-cta-buttons {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
  }

  /* =================== FOOTER =================== */
  footer {
    padding: 48px;
    background: #060B08;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
  }
  .footer-inner {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    color: rgba(255, 255, 255, 0.4);
    font-size: 13px;
    flex-wrap: wrap;
    gap: 24px;
  }

  /* =================== RESPONSIVE =================== */
  @media (max-width: 1024px) {
    .hero-content { padding: 0 28px; }
    .story-inner { grid-template-columns: 1fr; gap: 40px; padding: 0 28px; }
    .quality-inner { grid-template-columns: 1fr; gap: 40px; }
    .quality-left { position: relative; top: 0; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .product-grid { grid-template-columns: repeat(2, 1fr); }
    .clients-inner { padding-left: 28px; padding-right: 28px; }
    .clients-note { padding: 0 28px; }
    .nav-menu { display: none; }
  }
  @media (max-width: 640px) {
    .nav { padding: 16px 20px; }
    .nav.scrolled { padding: 12px 20px; }
    .hero-content { padding: 0 20px; }
    .stats, .products, .quality, .footer-cta { padding-left: 20px; padding-right: 20px; }
    .clients { padding: 80px 0; }
    .clients-inner { padding: 0 20px 40px; }
    .marquee-card { min-width: 170px; padding: 16px 22px; }
    .marquee-card-name { font-size: 14px; }
    .marquee-card-name-en { font-size: 10px; }
    .clients-note { padding: 0 20px; margin-top: 36px; }
    .stats-grid { grid-template-columns: 1fr; gap: 12px; }
    .product-grid { grid-template-columns: 1fr; }
    .story-stats { flex-wrap: wrap; gap: 20px; }
    .footer-inner { flex-direction: column; text-align: center; }
  }
  @media (prefers-reduced-motion: reduce) {
    * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  }

  /* ============================================== */
  /* 📌 공통 네비게이션 드롭다운                       */
  /* ============================================== */
  .nav-menu li { position: relative; }
  .nav-menu li > a {
    display: inline-flex;
    align-items: center;
    gap: 4px;
  }
  .nav-dropdown {
    position: absolute;
    top: calc(100% + 12px);
    left: 50%;
    transform: translateX(-50%) translateY(-6px);
    min-width: 180px;
    background: #FFFFFF;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 8px;
    box-shadow: 0 14px 40px -8px rgba(11, 20, 16, 0.18), 0 4px 12px -2px rgba(11, 20, 16, 0.08);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.22s var(--ease-expo), transform 0.22s var(--ease-expo), visibility 0.22s;
    list-style: none;
    z-index: 1000;
    margin: 0;
  }
  .nav-dropdown::before {
    content: '';
    position: absolute;
    top: -8px;
    left: 0;
    right: 0;
    height: 8px;
  }
  .nav-menu li.has-dropdown:hover .nav-dropdown {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
  }
  .nav-dropdown li { width: 100%; }
  .nav-dropdown a {
    display: block;
    padding: 10px 14px;
    color: var(--text-1) !important;
    font-size: 13.5px;
    font-weight: 500;
    border-radius: 8px;
    white-space: nowrap;
    transition: background 0.18s, color 0.18s;
  }
  .nav-dropdown a::after { display: none !important; }
  .nav-dropdown a:hover {
    background: var(--green-bg);
    color: var(--green-dark) !important;
  }
  .nav.dark-mode .nav-dropdown a { color: var(--text-1) !important; }

  @media (max-width: 768px) {
    .nav-dropdown { display: none; }
  }