#et-tou {
    --ink: #10221c;
    --muted: #5d7168;
    --green: #177052;
    --deep: #0b3f30;
    --lime: #c5ed83;
    --soft: #f1f6f2;
    --line: #d9e6dd;
    width: 100%;
    max-width: 100%;
    overflow: clip;
    color: var(--ink);
    background: #fff;
    font: 16px/1.6 Arial, Helvetica, sans-serif;
  }
  #et-tou *, #et-tou *::before, #et-tou *::after { box-sizing: border-box; }
  #et-tou :is(h1, h2, h3, p, figure, ul) { margin: 0; }
  #et-tou :is(h1, h2, h3) { color: inherit; font-family: inherit; line-height: 1.13; letter-spacing: -.03em; }
  #et-tou a { color: inherit; text-decoration: none; }
  #et-tou a:hover { text-decoration: underline; }
  #et-tou a:focus-visible, #et-tou summary:focus-visible { outline: 3px solid var(--lime); outline-offset: 4px; }
  #et-tou [id] { scroll-margin-top: 110px; }
  #et-tou .wrap { width: min(1280px, calc(100% - 48px)); margin-inline: auto; }
  #et-tou .section { padding: 78px 0; }
  #et-tou .soft { background: var(--soft); }
  #et-tou .eyebrow { color: var(--green); font-size: 12px; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
  #et-tou .eyebrow::before { display: inline-block; width: 25px; height: 2px; margin-right: 10px; vertical-align: middle; background: currentColor; content: ""; }
  #et-tou h1 { max-width: 12ch; font-size: clamp(42px, 5vw, 72px); }
  #et-tou h2 { font-size: clamp(30px, 3vw, 43px); }
  #et-tou h3 { font-size: 20px; }
  #et-tou p { color: var(--muted); }
  #et-tou .lead { max-width: 63ch; font-size: 18px; }
  #et-tou .button-row { display: flex; flex-wrap: wrap; gap: 11px; margin-top: 26px; }
  #et-tou .button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; padding: 11px 19px; border: 1px solid var(--green); border-radius: 9px; background: var(--green); color: #fff; font-size: 14px; font-weight: 700; }
  #et-tou .button.outline { background: #fff; color: var(--green); }
  #et-tou .hero { padding: 64px 0 72px; background: linear-gradient(120deg, #e7f1e8, #f8faf6 65%, #fff); }
  #et-tou .crumb { margin-bottom: 36px; color: var(--muted); font-size: 13px; }
  #et-tou .hero-grid { display: grid; grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr); align-items: center; gap: 55px; }
  #et-tou .hero .eyebrow { margin-bottom: 18px; }
  #et-tou .hero .lead { margin-top: 22px; }
  #et-tou .hero-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
  #et-tou .hero-tags span { padding: 7px 11px; border: 1px solid #cbded1; border-radius: 99px; background: #fff; font-size: 12px; font-weight: 700; }
  #et-tou .diagram { overflow: hidden; border: 1px solid var(--line); border-radius: 23px; background: #fff; box-shadow: 0 18px 48px rgba(12, 49, 34, .08); }
  #et-tou .diagram svg { display: block; width: 100%; height: auto; }
  #et-tou .diagram figcaption { padding: 13px 20px 17px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
  #et-tou .section-head { display: flex; align-items: end; justify-content: space-between; gap: 28px; margin-bottom: 30px; }
  #et-tou .section-head h2 { margin-top: 13px; }
  #et-tou .section-head p { max-width: 50ch; }
  #et-tou .two-col { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
  #et-tou .three-col { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
  #et-tou .card { min-width: 0; padding: 26px; border: 1px solid var(--line); border-radius: 18px; background: #fff; }
  #et-tou .card h3 { margin: 12px 0 10px; }
  #et-tou .card p { font-size: 14px; }
  #et-tou .num { color: var(--green); font-size: 12px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
  #et-tou .flow { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 18px 0; }
  #et-tou .flow span { padding: 9px 11px; border-radius: 8px; background: var(--soft); font-size: 13px; font-weight: 700; }
  #et-tou .flow b { color: var(--green); }
  #et-tou .step-list { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 13px; margin-top: 25px; }
  #et-tou .step { padding: 20px; border-radius: 15px; background: #fff; border: 1px solid var(--line); }
  #et-tou .step strong { display: block; margin: 9px 0 7px; font-size: 16px; }
  #et-tou .step p { font-size: 13px; }
  #et-tou .small-note { margin-top: 18px; font-size: 13px; }
  #et-tou .product { display: flex; min-width: 0; flex-direction: column; overflow: hidden; border: 1px solid var(--line); border-radius: 18px; background: #fff; }
  #et-tou .product .product-media { position: relative; display: block; flex: 0 0 230px; height: 230px; min-height: 230px; overflow: hidden; isolation: isolate; background: #f9fbf9; }
  #et-tou .product .product-media img { position: absolute !important; inset: 14px !important; display: block !important; width: calc(100% - 28px) !important; height: calc(100% - 28px) !important; max-width: calc(100% - 28px) !important; max-height: calc(100% - 28px) !important; margin: 0 !important; padding: 0 !important; transform: none !important; object-fit: contain !important; object-position: center !important; }
  #et-tou .product-copy { position: relative; z-index: 1; display: flex; flex: 1; flex-direction: column; min-height: 0; padding: 21px; border-top: 1px solid var(--line); background: #fff; }
  #et-tou .product-copy h3 { margin: 8px 0; }
  #et-tou .product-copy p { margin-bottom: 20px; font-size: 14px; }
  #et-tou .product-copy a { margin-top: auto; color: var(--green); font-size: 14px; font-weight: 700; }
  #et-tou .check-grid { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 36px; align-items: start; }
  #et-tou .check-grid figure { overflow: hidden; border-radius: 18px; border: 1px solid var(--line); background: #fff; }
  #et-tou .check-grid img { display: block; width: 100%; height: 280px; object-fit: contain; }
  #et-tou .check-grid figcaption { padding: 12px 16px; font-size: 12px; color: var(--muted); }
  #et-tou .check-list { display: grid; gap: 0; padding: 0; list-style: none; }
  #et-tou .check-list li { padding: 13px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
  #et-tou .check-list strong { display: block; color: var(--ink); }
  #et-tou .check-list span { color: var(--muted); }
  #et-tou .faq { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
  #et-tou details { padding: 18px 20px; border: 1px solid var(--line); border-radius: 12px; background: #fff; }
  #et-tou summary { color: var(--ink); font-weight: 700; cursor: pointer; }
  #et-tou details p { margin-top: 10px; font-size: 14px; }
  #et-tou .cta { padding: 72px 0; background: #e7f0e9; }
  #et-tou .cta-grid { display: grid; grid-template-columns: minmax(0, .86fr) minmax(0, 1.14fr); gap: 40px; align-items: start; }
  #et-tou .cta h2 { margin: 12px 0 17px; }
  #et-tou .form-panel { min-width: 0; padding: 26px; border: 1px solid var(--line); border-radius: 18px; background: #fff; }
  #et-tou .form-panel :is(input, select, textarea) { max-width: 100%; }
  #et-tou .visual-split { display: grid; grid-template-columns: minmax(0,1.05fr) minmax(0,.95fr); gap: 26px; align-items: center; margin-top: 28px; }
  #et-tou .visual-split.reverse { grid-template-columns: minmax(0,.95fr) minmax(0,1.05fr); }
  #et-tou .photo { overflow: hidden; border: 1px solid var(--line); border-radius: 18px; background: #fff; }
  #et-tou .photo img { display: block; width: 100%; height: auto; max-height: 330px; object-fit: contain; }
  #et-tou .photo figcaption { padding: 11px 15px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
  #et-tou .visual-copy { padding: 12px 8px; }
  #et-tou .visual-copy h3 { margin: 10px 0 12px; font-size: 25px; }
  #et-tou .visual-copy ul { display: grid; gap: 11px; padding-left: 20px; margin: 18px 0 0; color: var(--muted); }
  #et-tou .visual-copy li::marker { color: var(--green); }
  #et-tou .math-grid { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 12px; margin-top: 24px; }
  #et-tou .math-grid div { padding: 19px; border: 1px solid var(--line); border-radius: 13px; background: #fff; }
  #et-tou .math-grid span { display: block; color: var(--muted); font-size: 12px; }
  #et-tou .math-grid strong { display: block; margin-top: 7px; color: var(--green); font-size: 22px; }
  #et-tou .math-result { margin-top: 15px; padding: 18px 21px; border-radius: 13px; background: var(--deep); color: #fff; }
  #et-tou .math-result strong { color: var(--lime); }
  #et-tou .math-result p { color: #e0eee5; font-size: 13px; }
  @media (max-width: 860px) {
    #et-tou .hero-grid, #et-tou .check-grid, #et-tou .cta-grid, #et-tou .visual-split, #et-tou .visual-split.reverse { grid-template-columns: 1fr; }
    #et-tou .step-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    #et-tou .three-col { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    #et-tou .section-head { display: block; }
    #et-tou .section-head p { margin-top: 13px; }
  }
  @media (max-width: 600px) {
    #et-tou .wrap { width: min(100% - 28px, 1280px); }
    #et-tou .section, #et-tou .cta { padding: 54px 0; }
    #et-tou .hero { padding: 35px 0 55px; }
    #et-tou .crumb { margin-bottom: 26px; }
    #et-tou .two-col, #et-tou .three-col, #et-tou .step-list, #et-tou .faq { grid-template-columns: 1fr; }
    #et-tou .product .product-media { flex-basis: 220px; height: 220px; min-height: 220px; }
    #et-tou .math-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  }