:root {
  --black: #1D1D1D;
  --black-light: #5E5E5E;
  --brown: #743600;
  --gray: #777777;
  --line: #9D9D9D;
  --paper: #F4F2ED;
  --paper-warm: #EAE6DD;
  --gold: #A18C63;
  --gold-light: #C5A572;  
  --base: #FFFFFF;
  --page-min: 390px;
  --page-max: 560px;
  --side: 22px;
  --font: "Noto Sans JP", "Noto Sans Medium", "Yu Gothic", "YuGothic", "游ゴシック体", "Yu Gothic Medium", "Hiragino Sans", sans-serif;
  --font-eng: "SF Pro JP", "SF Pro Text", "SF Pro", "system-ui", "-apple-system", "BlinkMacSystemFont", "Segoe UI", "Roboto", "Helvetica", "Arial", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--black);
  background: var(--paper);
  letter-spacing: 0;
}

.container-fluid {
  padding-right: 0;
  padding-left: 0;
}

.brian-page {
  width: clamp(var(--page-min), 100%, var(--page-max));
  margin: 0 auto;
  overflow: hidden;
  color: var(--black);
  background: var(--base);
  font-family: var(--font);
}

.brian-page h1,
.brian-page h2,
.brian-page h3,
.brian-page p,
.brian-page dl {
  margin-top: 0;
}

.brian-page a,
.brian-page a:visited,
.brian-page a:focus {
  color: inherit;
  text-decoration: none;
}

.brian-page sup {
  font-size: 0.45em;
  line-height: 0;
}

.brian-hero {
  padding: 100px var(--side) 0;
  background: var(--base);
  text-align: center;
}

.brian-kicker {
  margin: 0 0 40px;
  color: var(--black);
  font-family: var(--font-eng);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0;
}

.brian-kicker-center {
  margin-bottom: 42px;
}

.brian-portrait {
  width: 132px;
  height: 132px;
  margin: 0 auto 34px;
  border-radius: 50%;
  background-image: url("/template/default/img/abouts/qusome/brian.png");
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
}

.brian-name {
  margin: 0 0 18px;
  color: var(--black);
  font-weight: 600;
  letter-spacing: 0;
  text-align: center;
}

.brian-name span {
  display: block;
}

.brian-name-ja {
  margin-bottom: 8px;
  font-size: 17px;
  line-height: 1.6;
}

.brian-name-en {
  font-family: var(--font-eng);
  font-size: 15px;
  line-height: 1.45;
}

.brian-position {
  margin: 0;
  color: var(--gray);
  font-size: 12px;
  line-height: 1.75;
}

.brian-hero-rule {
  display: block;
  width: 72px;
  height: 1px;
  margin: 48px auto 0;
  background: var(--line);
}

.brian-section {
  position: relative;
  padding: 80px var(--side) 60px;
}
@media (min-width: 500px) {
.brian-section {
	padding: 60px 44px 50px;
	}
}

.brian-section-white {
  background: var(--base);
}

.brian-section-paper {
  background: var(--paper);
  border: 1px solid var(--paper-warm);
}

.brian-final-section {
  padding-bottom: 100px;
}

.brian-page h2 {
  margin-bottom: 36px;
  color: var(--black);
  font-size: 23px;
  font-weight: 600;
  line-height: 40px;
  letter-spacing: 0;
}

.brian-title-rule {
  display: block;
  width: 100%;
  height: 1px;
  margin: 0 0 52px;
  background: var(--line);
}

.brian-copy p {
  margin: 0 0 30px;
  color: var(--black-light);
  font-size: 14px;
  line-height: 2;
}

.brian-copy p:last-child {
  margin-bottom: 0;
}

.brian-detail-list {
  display: grid;
  gap: 0;
}

.brian-detail-block {
  padding-bottom: 34px;
  margin-bottom: 34px;
  border-bottom: 1px dashed var(--line);
}

.brian-detail-block-last {
  padding-bottom: 0;
  margin-bottom: 0;
  border-bottom: 0;
}

.brian-detail-block h3 {
  margin: 0 0 16px;
  color: var(--black);
  font-family: var(--font-eng);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0;
}

.brian-detail-block p {
  margin: 0 0 12px;
  color: var(--black-light);
  font-size: 13px;
  line-height: 1.85;
}

.brian-detail-block p:last-child {
  margin-bottom: 0;
}

.brian-detail-block strong {
  color: var(--black);
  font-weight: 700;
}

.brian-patent-list .brian-detail-block h3 {
  margin-bottom: 14px;
}

.brian-patent-list .brian-detail-block p {
  font-size: 12px;
  line-height: 1.8;
}

.brian-note {
  margin: 4px 0 0;
  color: var(--gray);
  font-size: 12px;
  line-height: 1.7;
  text-align: right;
}

.brian-doi {
  color: var(--gray);
}

.brian-doi a {
  display: inline-block;
  border-bottom: 1px solid var(--line);
}

.brian-back-link {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  align-items: center;
  margin: 72px auto 0;
  padding: 20px 20px;
  border: 2px solid var(--black);
  color: var(--black);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.5;
  text-align: center;
  width: 90%;  
}
@media (min-width: 500px) {
  .brian-back-link {
  	width: 70%;
}

.brian-back-link span:first-child {
  justify-self: start;
  color: var(--black);
  font-family: var(--font-eng);
}

.brian-js-ready .brian-reveal,
.brian-js-ready .brian-reveal-title {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 0.8s ease,
    transform 0.8s ease;
}

.brian-js-ready .brian-reveal.is-visible,
.brian-js-ready .brian-reveal-title.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (min-width: 500px) {
  :root {
    --side: 44px;
  }

  .brian-hero {
    padding: 120px 0 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .brian-js-ready .brian-reveal,
  .brian-js-ready .brian-reveal-title {
    opacity: 1;
    transform: none;
    transition-duration: 0.001ms;
  }
}