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

  :root {
    --black: #0a0a0a;
    --white: #ffffff;
    --gray-50: #fafafa;
    --gray-100: #f5f5f5;
    --gray-200: #e8e8e8;
    --gray-300: #d4d4d4;
    --gray-400: #a3a3a3;
    --gray-500: #737373;
    --gray-600: #525252;
    --gray-700: #404040;
    --gray-800: #262626;
    --orange: #f97316;
    --navy: #0f172a;
  }

  html { scroll-behavior: smooth; font-size: 16px; }
  body {
    font-family: 'DM Sans', 'Noto Sans TC', system-ui, sans-serif;
    background: var(--white);
    color: var(--black);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }

  /* ===================== NAV ===================== */
  nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 48px;
    height: 64px;
    background: rgba(255,255,255,0.88);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid rgba(0,0,0,0.06);
  }
  .nav-logo {
    font-size: 14px;
    font-weight: 800;
    letter-spacing: -0.3px;
    color: var(--black);
    text-decoration: none;
  }
  .nav-logo span { color: var(--gray-400); }
  .nav-links { display: flex; gap: 36px; align-items: center; }
  .nav-links a {
    color: var(--gray-600);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.01em;
    transition: color 0.2s;
  }
  .nav-links a:hover { color: var(--black); }
  .nav-lang { display: flex; gap: 8px; font-size: 11px; font-weight: 500; }
  .nav-lang a { color: var(--gray-400); text-decoration: none; }
  .nav-lang a.active { color: var(--black); }
  .nav-cta {
    background: var(--black);
    color: var(--white);
    text-decoration: none;
    font-size: 12px;
    font-weight: 600;
    padding: 8px 18px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    transition: background 0.2s, transform 0.2s;
  }
  .nav-cta:hover { background: var(--gray-800); transform: translateY(-1px); }

  /* ===================== HERO ===================== */
  .hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 120px 48px 80px;
    max-width: 1400px;
    margin: 0 auto;
  }
  .hero-eyebrow {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    color: var(--gray-400);
    margin-bottom: 32px;
    display: flex;
    align-items: center;
    gap: 12px;
  }
  .hero-eyebrow::before {
    content: '';
    display: inline-block;
    width: 32px;
    height: 1px;
    background: var(--gray-300);
  }
  .hero-headline {
    font-size: clamp(56px, 8vw, 112px);
    font-weight: 800;
    line-height: 0.93;
    letter-spacing: -3px;
    color: var(--black);
    margin-bottom: 40px;
  }
  .hero-headline .line2 {
    display: block;
    -webkit-text-stroke: 2px var(--black);
    color: transparent;
  }
  .hero-sub {
    font-size: 18px;
    font-weight: 400;
    color: var(--gray-500);
    line-height: 1.6;
    max-width: 520px;
    margin-bottom: 8px;
  }
  .hero-zh {
    font-size: 15px;
    color: var(--gray-400);
    margin-bottom: 56px;
    font-weight: 300;
  }
  .hero-actions {
    display: flex;
    gap: 16px;
    align-items: center;
  }
  .btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--black);
    color: var(--white);
    text-decoration: none;
    font-size: 13px;
    font-weight: 600;
    padding: 14px 28px;
    letter-spacing: 0.03em;
    transition: all 0.25s;
  }
  .btn-primary:hover { background: var(--gray-800); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.15); }
  .btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--gray-600);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    padding: 14px 0;
    border-bottom: 1px solid var(--gray-200);
    transition: all 0.2s;
  }
  .btn-secondary:hover { color: var(--black); border-color: var(--black); }

  .hero-scroll {
    position: absolute;
    bottom: 48px;
    left: 48px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 11px;
    font-weight: 500;
    color: var(--gray-400);
    letter-spacing: 1px;
    text-transform: uppercase;
  }
  .hero-scroll-line {
    width: 1px;
    height: 48px;
    background: linear-gradient(to bottom, var(--gray-300), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
  }
  @keyframes scrollPulse {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 1; }
  }

  /* ===================== STATS BAR ===================== */
  .stats-bar {
    border-top: 1px solid var(--gray-100);
    border-bottom: 1px solid var(--gray-100);
    padding: 28px 48px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    max-width: 1400px;
    margin: 0 auto;
  }
  .stat {
    text-align: center;
    padding: 0 32px;
    border-right: 1px solid var(--gray-100);
  }
  .stat:last-child { border-right: none; }
  .stat-num {
    font-size: 40px;
    font-weight: 800;
    letter-spacing: -2px;
    color: var(--black);
    line-height: 1;
    margin-bottom: 6px;
  }
  .stat-label {
    font-size: 12px;
    font-weight: 500;
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: 1px;
  }

  /* ===================== PILLARS ===================== */
  .pillars {
    padding: 100px 48px;
    max-width: 1400px;
    margin: 0 auto;
  }
  .pillars-header {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    margin-bottom: 80px;
    align-items: end;
  }
  .pillars-header h2 {
    font-size: 52px;
    font-weight: 700;
    letter-spacing: -2px;
    line-height: 1.05;
    color: var(--black);
  }
  .pillars-header p {
    font-size: 16px;
    color: var(--gray-500);
    line-height: 1.7;
    padding-bottom: 4px;
  }
  .pillars-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border-top: 1px solid var(--black);
  }
  .pillar-item {
    padding: 40px 32px 40px 0;
    border-right: 1px solid var(--gray-100);
    transition: background 0.2s;
  }
  .pillar-item:last-child { border-right: none; }
  .pillar-item:hover { background: var(--gray-50); }
  .pillar-num {
    font-size: 11px;
    font-weight: 600;
    color: var(--gray-400);
    letter-spacing: 2px;
    margin-bottom: 24px;
    font-family: 'DM Sans', monospace;
  }
  .pillar-name {
    font-size: 24px;
    font-weight: 700;
    color: var(--black);
    letter-spacing: -0.5px;
    margin-bottom: 4px;
  }
  .pillar-zh {
    font-size: 13px;
    color: var(--gray-400);
    margin-bottom: 20px;
    font-weight: 300;
  }
  .pillar-desc {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.6;
  }

  /* ===================== SERVICES ===================== */
  .services {
    background: var(--gray-50);
    padding: 100px 48px;
  }
  .services-inner { max-width: 1400px; margin: 0 auto; }
  .services-header {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    margin-bottom: 80px;
    align-items: end;
  }
  .services-header h2 {
    font-size: 52px;
    font-weight: 700;
    letter-spacing: -2px;
    line-height: 1.05;
    color: var(--black);
  }
  .services-list {
    border-top: 1px solid var(--gray-200);
  }
  .service-item {
    display: grid;
    grid-template-columns: 64px 1fr 1fr auto;
    gap: 32px;
    align-items: center;
    padding: 32px 0;
    border-bottom: 1px solid var(--gray-200);
    cursor: pointer;
    transition: padding-left 0.25s;
  }
  .service-item:hover { padding-left: 8px; background: rgba(255,255,255,0.7); }
  .service-num {
    font-size: 13px;
    font-weight: 500;
    color: var(--gray-400);
    font-family: 'DM Sans', monospace;
  }
  .service-title {
    font-size: 26px;
    font-weight: 700;
    color: var(--black);
    letter-spacing: -0.5px;
  }
  .service-desc {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.6;
  }
  .service-arrow {
    color: var(--gray-300);
    font-size: 20px;
    transition: transform 0.2s, color 0.2s;
  }
  .service-item:hover .service-arrow { transform: translateX(4px); color: var(--black); }

  /* ===================== PRODUCTS ===================== */
  .products {
    padding: 100px 48px;
    max-width: 1400px;
    margin: 0 auto;
  }
  .products-header {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    margin-bottom: 64px;
    align-items: end;
  }
  .products-header h2 {
    font-size: 52px;
    font-weight: 700;
    letter-spacing: -2px;
    line-height: 1.05;
    color: var(--black);
  }
  .products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border: 1px solid var(--gray-100);
  }
  .product-card {
    padding: 48px 32px;
    text-align: left;
    border-right: 1px solid var(--gray-100);
    position: relative;
    overflow: hidden;
    transition: background 0.25s;
    cursor: pointer;
  }
  .product-card:last-child { border-right: none; }
  .product-card:hover { background: var(--gray-50); }
  .product-card::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 2px;
    background: var(--black);
    transform: scaleX(0);
    transition: transform 0.3s;
  }
  .product-card:hover::after { transform: scaleX(1); }
  .product-icon { font-size: 40px; margin-bottom: 28px; display: block; }
  .product-name { font-size: 18px; font-weight: 700; color: var(--black); margin-bottom: 4px; }
  .product-zh { font-size: 12px; color: var(--gray-400); font-weight: 300; margin-bottom: 16px; }
  .product-tags { display: flex; gap: 6px; flex-wrap: wrap; }
  .product-tag {
    font-size: 10px;
    font-weight: 500;
    padding: 4px 8px;
    border: 1px solid var(--gray-200);
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.5px;
  }

  /* ===================== PROCESS ===================== */
  .process {
    background: var(--black);
    color: var(--white);
    padding: 100px 48px;
  }
  .process-inner { max-width: 1400px; margin: 0 auto; }
  .process-header {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    margin-bottom: 80px;
    align-items: end;
  }
  .process-header h2 {
    font-size: 52px;
    font-weight: 700;
    letter-spacing: -2px;
    line-height: 1.05;
    color: var(--white);
  }
  .process-header p { font-size: 15px; color: var(--gray-400); line-height: 1.7; }
  .process-steps {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 0;
    border-left: 1px solid var(--gray-800);
  }
  .process-step {
    padding: 32px 28px;
    border-right: 1px solid var(--gray-800);
    position: relative;
  }
  .step-num {
    font-size: 11px;
    font-weight: 600;
    color: var(--gray-600);
    letter-spacing: 2px;
    margin-bottom: 20px;
    font-family: 'DM Sans', monospace;
  }
  .step-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 8px;
    letter-spacing: -0.3px;
  }
  .step-zh {
    font-size: 12px;
    color: var(--gray-500);
    margin-bottom: 16px;
    font-weight: 300;
  }
  .step-desc {
    font-size: 13px;
    color: var(--gray-400);
    line-height: 1.6;
  }

  /* ===================== CTA ===================== */
  .cta-section {
    padding: 120px 48px;
    text-align: center;
    border-bottom: 1px solid var(--gray-100);
  }
  .cta-label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    color: var(--gray-400);
    margin-bottom: 24px;
  }
  .cta-headline {
    font-size: clamp(44px, 6vw, 80px);
    font-weight: 800;
    letter-spacing: -3px;
    line-height: 1;
    color: var(--black);
    margin-bottom: 24px;
  }
  .cta-zh {
    font-size: 18px;
    color: var(--gray-400);
    margin-bottom: 48px;
    font-weight: 300;
  }
  .cta-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    align-items: center;
  }
  .btn-orange {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--orange);
    color: var(--white);
    text-decoration: none;
    font-size: 13px;
    font-weight: 700;
    padding: 16px 32px;
    letter-spacing: 0.03em;
    transition: all 0.25s;
  }
  .btn-orange:hover { background: #ea580c; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(249,115,22,0.35); }
  .cta-contact {
    font-size: 13px;
    color: var(--gray-400);
  }
  .cta-contact a { color: var(--gray-600); text-decoration: none; }
  .cta-contact a:hover { color: var(--black); }

  /* ===================== FOOTER ===================== */
  footer {
    padding: 48px;
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    gap: 48px;
    border-top: 1px solid var(--gray-100);
  }
  .footer-brand .logo { font-size: 14px; font-weight: 800; color: var(--black); margin-bottom: 12px; }
  .footer-brand .logo span { color: var(--gray-300); }
  .footer-brand p { font-size: 13px; color: var(--gray-400); line-height: 1.6; max-width: 240px; }
  .footer-col h4 { font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 1.5px; color: var(--gray-500); margin-bottom: 20px; }
  .footer-col a { display: block; font-size: 13px; color: var(--gray-600); text-decoration: none; margin-bottom: 10px; transition: color 0.2s; }
  .footer-col a:hover { color: var(--black); }
  .footer-bottom {
    padding: 24px 48px;
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    border-top: 1px solid var(--gray-100);
    font-size: 12px;
    color: var(--gray-400);
  }