@media (min-width: 701px) {
  .loong-home {
    color: #17232d;
    background: #fff;
    font-family: 'Poppins', 'Segoe UI', Arial, sans-serif;
  }

  .loong-home * { box-sizing: border-box; }
  .loong-home a { text-decoration: none; }
  .loong-wrap { width: min(100% - 80px, 1440px); margin: 0 auto; }
  .loong-section { padding: 72px 0 82px; }

  .loong-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin: 0 0 16px;
    color: #1264df;
    font-size: 12px;
    line-height: 1.4;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.6px;
  }
  .loong-eyebrow i { font-size: 18px; line-height: 1; }
  .loong-eyebrow-light { color: #86b8ff; }

  .loong-section-head {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 34px;
  }
  .loong-section-head h2 {
    max-width: 880px;
    margin: 0 0 11px;
    color: #17232d;
    font-size: 42px;
    line-height: 1.14;
    font-weight: 700;
  }
  .loong-section-head p:not(.loong-eyebrow) {
    color: #667581;
    font-size: 16px;
    line-height: 1.6;
  }
  .loong-text-link {
    display: inline-flex;
    flex: 0 0 auto;
    align-items: center;
    gap: 9px;
    min-height: 36px;
    border-bottom: 1px solid #1264df;
    color: #0a4daf;
    font-size: 13px;
    font-weight: 700;
    white-space: nowrap;
    transition: gap .2s ease;
  }
  .loong-text-link:hover { gap: 15px; color: #1264df; }
  .loong-text-link-light { border-color: rgba(255,255,255,.65); color: #fff; }
  .loong-text-link-light:hover { color: #fff; }
  .loong-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    min-height: 54px;
    padding: 0 24px;
    border: 1px solid transparent;
    border-radius: 3px;
    font-size: 13px;
    font-weight: 700;
    transition: background .2s ease, transform .2s ease;
  }
  .loong-button:hover { transform: translateY(-2px); }
  .loong-button-primary { background: #1264df; color: #fff; }
  .loong-button-primary:hover { background: #0752c2; color: #fff; }
  .loong-button-outline { border-color: rgba(255,255,255,.75); color: #fff; }
  .loong-button-outline:hover { background: #fff; color: #17232d; }

  .loong-hero {
    position: relative;
    display: flex;
    align-items: center;
    height: 100svh;
    min-height: 650px;
    overflow: hidden;
    background: #111c2a;
  }
  .loong-hero-image,
  .loong-global > img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  .loong-hero-image { object-position: center center; }
  .loong-hero-shade,
  .loong-global-shade {
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(9,20,32,.76), rgba(9,20,32,.18) 58%, rgba(9,20,32,.06));
  }
  .loong-hero-inner { position: relative; z-index: 1; padding-top: 96px; }
  .loong-hero-copy { max-width: 575px; color: #fff; }
  .loong-hero h1 {
    margin: 0 0 23px;
    color: #fff;
    font-size: 66px;
    line-height: 1.02;
    font-weight: 750;
  }
  .loong-hero-lead { margin: 0 0 13px; font-size: 20px; line-height: 1.45; font-weight: 600; }
  .loong-hero-detail { max-width: 500px; color: #e5ebf2; font-size: 15px; line-height: 1.7; }
  .loong-actions { display: flex; align-items: center; gap: 28px; margin-top: 32px; }
  .loong-hero-index {
    position: absolute;
    right: 0;
    bottom: -85px;
    display: flex;
    align-items: center;
    gap: 12px;
    color: #e7edf5;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1.6px;
  }
  .loong-hero-index span { width: 32px; height: 1px; background: #80b3fb; }

  .loong-categories { background: #f4f7fa; scroll-margin-top: 94px; }
  .loong-category-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 15px; }
  .loong-category {
    display: block;
    min-width: 0;
    overflow: hidden;
    border: 1px solid #e3e9ef;
    border-radius: 4px;
    background: #fff;
    transition: box-shadow .25s ease, transform .25s ease;
  }
  .loong-category:hover { transform: translateY(-3px); box-shadow: 0 12px 26px rgba(20,42,69,.12); }
  .loong-category > img { display: block; width: 100%; aspect-ratio: 1.65; object-fit: cover; background: #e9edf1; }
  .loong-category-copy { display: flex; align-items: center; gap: 12px; min-height: 68px; padding: 12px 16px; color: #1b2e3e; }
  .loong-category-copy > i:first-child { flex: 0 0 auto; color: #1264df; font-size: 22px; }
  .loong-category-copy strong { flex: 1; min-width: 0; font-size: 14px; line-height: 1.35; font-weight: 650; }
  .loong-category-arrow { flex: 0 0 auto; color: #7e8d99; font-size: 17px; }

  .loong-factory { background: #fff; }
  .loong-factory-main { position: relative; height: 420px; overflow: hidden; margin: 0; background: #e9eff4; }
  .loong-factory-main img { width: 100%; height: 100%; object-fit: cover; object-position: center 45%; }
  .loong-factory-main::after { content: ''; position: absolute; inset: 45% 0 0; background: linear-gradient(transparent, rgba(9,19,30,.77)); }
  .loong-factory-main figcaption { position: absolute; z-index: 1; left: 30px; bottom: 27px; display: grid; gap: 5px; color: #fff; }
  .loong-factory-main figcaption span { color: #a9ccff; font-size: 11px; font-weight: 700; letter-spacing: 1.4px; }
  .loong-factory-main figcaption strong { font-size: 25px; line-height: 1.2; }
  .loong-factory-gallery { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 12px; margin-top: 12px; }
  .loong-factory-gallery figure { position: relative; height: 210px; overflow: hidden; margin: 0; background: #e9eff4; }
  .loong-factory-gallery img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s ease; }
  .loong-factory-gallery figure:hover img { transform: scale(1.04); }
  .loong-factory-gallery figcaption { position: absolute; right: 0; bottom: 0; left: 0; padding: 22px 10px 11px; background: linear-gradient(transparent, rgba(8,17,28,.82)); color: #fff; font-size: 12px; font-weight: 600; }
  .loong-visual-note { margin: 13px 0 0; color: #687785; font-size: 11px; line-height: 1.5; }

  .loong-products { background: #f4f7fa; }
  .loong-product-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
  .loong-product { display: block; min-width: 0; overflow: hidden; border: 1px solid #e1e7ee; border-radius: 4px; background: #fff; transition: transform .2s ease, box-shadow .2s ease; }
  .loong-product:hover { transform: translateY(-3px); box-shadow: 0 12px 24px rgba(20,42,69,.1); }
  .loong-product-image { display: block; aspect-ratio: 1.3; overflow: hidden; background: #fff; }
  .loong-product-image img { width: 100%; height: 100%; object-fit: contain; padding: 16px; }
  .loong-product-info { display: grid; align-content: space-between; gap: 17px; min-height: 118px; padding: 17px 18px 18px; border-top: 1px solid #e8edf2; }
  .loong-product-info strong { display: -webkit-box; overflow: hidden; -webkit-line-clamp: 2; -webkit-box-orient: vertical; color: #1b2e3e; font-size: 14px; line-height: 1.45; font-weight: 650; }
  .loong-product-info > span { display: inline-flex; align-items: center; gap: 8px; color: #1264df; font-size: 12px; font-weight: 700; }

  .loong-global { position: relative; height: 560px; overflow: hidden; background: #101b29; }
  .loong-global > img { object-position: center center; }
  .loong-global-shade { background: linear-gradient(90deg, rgba(7,17,29,.84), rgba(7,17,29,.55) 47%, rgba(7,17,29,.08)); }
  .loong-global-inner { position: relative; z-index: 1; display: flex; align-items: center; height: 100%; }
  .loong-global-copy { max-width: 540px; color: #fff; }
  .loong-global-copy h2 { margin: 0 0 20px; color: #fff; font-size: 51px; line-height: 1.12; }
  .loong-global-copy > p:not(.loong-eyebrow) { max-width: 480px; margin-bottom: 26px; color: #e4ebf3; font-size: 15px; line-height: 1.7; }
  .loong-global-note { position: absolute; right: 0; bottom: 18px; color: #fff; font-size: 11px; background: rgba(9,20,32,.76); padding: 6px 9px; }

  .loong-process { background: #fff; }
  .loong-process-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 18px; }
  .loong-process-step { position: relative; min-width: 0; padding: 22px 16px 15px 0; border-top: 2px solid #cad6e2; }
  .loong-process-step::before { content: ''; position: absolute; top: -2px; left: 0; width: 48px; height: 2px; background: #1264df; }
  .loong-process-icon { display: grid; place-items: center; width: 49px; height: 49px; margin-bottom: 23px; border-radius: 4px; background: #eaf2fe; color: #1264df; font-size: 25px; }
  .loong-process-step h3 { margin: 0 0 9px; color: #17232d; font-size: 17px; line-height: 1.3; }
  .loong-process-step p { margin: 0; color: #687785; font-size: 13px; line-height: 1.6; }
  .loong-process-end { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-top: 46px; padding: 22px 26px; background: #eef3f8; }
  .loong-process-end span { color: #243544; font-size: 19px; font-weight: 650; }
}

@media (min-width: 701px) and (max-width: 1100px) {
  .loong-wrap { width: min(100% - 48px, 1440px); }
  .loong-section-head h2 { font-size: 34px; }
  .loong-hero h1 { font-size: 54px; }
  .loong-category-grid, .loong-product-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .loong-factory-gallery { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .loong-process-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .loong-global-copy h2 { font-size: 42px; }
}

@media (min-width: 701px) and (max-width: 820px) {
  .loong-hero { min-height: 590px; }
  .loong-hero-copy { max-width: 485px; }
  .loong-hero h1 { font-size: 49px; }
  .loong-category-grid, .loong-product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .loong-process-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .loong-section-head { align-items: start; flex-wrap: wrap; }
}