:root {
  --page: #f5f5f5;
  --heading: #373737;
  --body-en: #686868;
  --body-ja: #515151;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-width: 320px;
  background: var(--page);
  color: var(--heading);
  font-family: "Helvetica Neue", "Segoe UI Light", "Noto Sans", Arial, sans-serif;
  font-weight: 100;
}
.site-header {
  height: 153px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #000;
}
.brand {
  color: #c5c5c5;
  text-decoration: none;
  font-size: clamp(50px, 5.5vw, 76px);
  font-weight: 100;
  line-height: 1;
  letter-spacing: -3px;
}
.product {
  text-align: center;
  max-width: 1100px;
  padding: 25px 22px 130px;
  margin: 0 auto;
}
.product-name {
  margin: 0;
  font-size: clamp(54px, 6.4vw, 92px);
  font-weight: 100;
  line-height: 1.08;
  letter-spacing: -2.7px;
}
.product-name-ja {
  margin: 1px 0 6px;
  font-size: 16px;
  font-weight: 300;
  letter-spacing: .07em;
}
.product-version {
  margin: 0 0 13px;
  color: #555;
  font-size: 34px;
  line-height: 1.12;
  font-weight: 100;
  letter-spacing: -1px;
}
.product-image {
  display: block;
  width: 383px;
  height: auto;
  max-width: 100%;
  margin: 0 auto;
}
.intro {
  max-width: 770px;
  margin: 15px auto 0;
}
.intro p { margin: 0; }
.intro-en {
  font-size: 17px;
  font-weight: 100;
  line-height: 1.84;
  color: #717171;
}
.intro-ja {
  margin-top: 34px;
  font-size: 15px;
  font-weight: 300;
  line-height: 1.8;
  letter-spacing: .025em;
  color: #4f4f4f;
}
.buy-link {
  display: inline-block;
  margin-top: 35px;
  font-size: clamp(51px, 5.65vw, 79px);
  letter-spacing: -2.5px;
  font-weight: 100;
  line-height: 1.2;
  color: var(--heading);
  text-decoration: none;
  transition: opacity .2s ease;
}
.buy-link:hover { opacity: .65; }
a:focus-visible { outline: 2px solid #202020; outline-offset: 7px; }

.workflow-figure {
  width: min(92%, 720px);
  margin: 70px auto 90px;
  text-align: center;
}

.workflow-figure img {
  width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
}

.features {
  max-width: 1100px;
  margin: 105px auto 0;
  padding: 0 10px;
}
.feature { margin-bottom: 76px; }
.feature h2, .feature h3 { margin: 0; }
.feature h2 {
  font-size: 21px;
  font-weight: 200;
  line-height: 1.5;
  letter-spacing: .01em;
}
.feature-en {
  color: #5f5f5f;
  font-weight: 200;
  font-size: 15px;
  line-height: 1.8;
  margin-top: 17px;
}
.feature h3 {
  font-size: 17px;
  font-weight: 300;
  letter-spacing: .04em;
  line-height: 1.7;
  margin-top: 29px;
}
.feature-ja {
  color: #4f4f4f;
  font-size: 14px;
  font-weight: 300;
  letter-spacing: .02em;
  line-height: 1.95;
  margin-top: 11px;
}
.feature p { margin: 0 auto 11px; max-width: 1100px; }
.feature p:last-child { margin-bottom: 0; }
@media (max-width: 780px) {
  .site-header { height: 125px; }
  .brand { font-size: clamp(43px, 10vw, 65px); letter-spacing: -2px; }
  .product { padding: 40px 18px 80px; }
  .product-name { font-size: clamp(39px, 9vw, 64px); letter-spacing: -1.5px; }
  .product-name-ja { font-size: 13px; margin-top: 6px; }
  .product-version { font-size: 27px; margin-bottom: 22px; }
  .intro { margin-top: 25px; }
  .intro-en { font-size: 14px; line-height: 1.85; }
  .intro-ja { font-size: 13px; margin-top: 25px; }
  .desktop-break { display: none; }
  .buy-link { font-size: clamp(46px, 10vw, 69px); margin-top: 40px; }
  .features { margin-top: 75px; }
  .feature { margin-bottom: 58px; }
  .feature h2 { font-size: 18px; }
  .feature-en { font-size: 14px; }
  .feature h3 { font-size: 16px; }
  .feature-ja { font-size: 13px; }
}

/* Japanese brand subtitle */
.brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.brand-en { display: block; }
.brand-ja {
  display: block;
  margin-top: 7px;
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  font-size: 14px;
  font-weight: 300;
  line-height: 1.3;
  letter-spacing: .13em;
  color: #a8a8a8;
}
@media (max-width: 780px) {
  .brand-ja { font-size: 12px; margin-top: 6px; }
}


/* Footer */

.site-footer {
  padding: 80px 20px 45px;
  text-align: center;
  color: #484848;
  font-size: 14px;
  font-weight: 200;
  line-height: 1.8;
}

.site-footer p {
  margin: 0 0 8px;
}

.site-footer a {
  color: inherit;
  text-decoration: none;
}

.site-footer a:hover {
  text-decoration: underline;
}

.site-footer .copyright {
  margin-top: 45px;
  font-size: 12px;
  color: #555;
}

@media (max-width: 600px) {
  .site-footer {
    padding: 60px 20px 35px;
    font-size: 13px;
  }

  .site-footer .copyright {
    margin-top: 35px;
    font-size: 11px;
  }
}