@charset "UTF-8";

:root {
  --ink: #111111;
  --sub: #666666;
  --line: #d8d8d3;
  --paper: #ffffff;
  --accent: rgb(96, 192, 189);
  --font-body: 18px;
  --font-heading-large: 34px;
  --font-heading-medium: 22px;
  --font-heading-small: 20px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Helvetica Neue", Helvetica, Arial, "Hiragino Sans", "Yu Gothic", sans-serif;
  font-size: var(--font-body);
  line-height: 1.8;
  letter-spacing: 0.01em;
}

a { color: inherit; }

.bunseido-header {
  position: relative;
  z-index: 10;
  display: grid;
  grid-template-columns: minmax(250px, 1fr) minmax(600px, 1.8fr);
  align-items: stretch;
  min-height: 98px;
  color: #111111;
  background: #ffffff;
  border-bottom: 1px solid #111111;
}

.bunseido-logo {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 18px 30px;
  border-right: 1px solid #111111;
  color: #111111;
  text-decoration: none;
}

.bunseido-logo span {
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 36px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0;
}

.bunseido-logo small {
  margin-top: 7px;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0;
}

.bunseido-nav {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 0;
}

.bunseido-nav a {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 98px;
  padding: 10px;
  border-right: 1px solid #111111;
  color: #111111;
  font-family: "Helvetica Neue", Helvetica, Arial, "Hiragino Sans", "Yu Gothic", sans-serif;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.35;
  text-align: center;
  text-decoration: none;
}

.bunseido-nav a::after {
  position: absolute;
  right: 18px;
  bottom: 22px;
  left: 18px;
  height: 2px;
  background: #111111;
  content: "";
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.3s ease;
}

.bunseido-nav a:hover {
  color: #111111;
  background: #93D2D7;
}

.bunseido-nav a:hover::after {
  transform: scaleX(1);
}

.bunseido-nav .bunseido-nav-contact {
  color: #ffffff;
  background: #111111;
}

.bunseido-nav .bunseido-nav-contact::after {
  display: none;
}

.bunseido-nav .bunseido-nav-contact:hover {
  color: #111111;
  background: #93D2D7;
}

.hero {
  max-width: 1440px;
  min-height: 490px;
  margin: 0 auto;
  padding: 44px 4vw 34px;
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: 6vw;
  align-items: center;
}

.hero-app-label {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 18px;
}

.hero-app-label img {
  width: 42px;
  height: 42px;
  border-radius: 10px;
}

.eyebrow,
.product-type {
  margin: 0;
  color: var(--sub);
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0.04em;
  text-transform: none;
}

.hero h1 {
  margin: 0;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: clamp(54px, 5.6vw, 76px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0;
  font-kerning: normal;
  font-feature-settings: "kern" 1;
  text-rendering: optimizeLegibility;
}

.tagline {
  margin: 24px 0 0;
  font-size: clamp(24px, 2.6vw, 36px);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: 0;
}

.lead {
  margin: 30px 0 0;
  font-size: var(--font-body);
  font-weight: 500;
}

.hero-product {
  align-self: end;
}

.hero-screenshot {
  width: min(100%, 620px);
  height: 390px;
  margin: 0;
  overflow: hidden;
  border: 1px solid #d8d8d3;
  border-radius: 10px;
  background: #ffffff;
}

.hero-screenshot img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: top center;
  background: #ffffff;
}

.section {
  border-top: 1px solid var(--line);
}

.section-label {
  max-width: 1440px;
  height: 56px;
  margin: 0 auto;
  padding: 0 4vw;
  display: grid;
  grid-template-columns: 76px 1fr;
  align-items: center;
  border-bottom: 1px solid var(--line);
  color: #60C0BD;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 18px;
  letter-spacing: 0.02em;
}

.section-label span {
  font-size: 19.2px;
  font-weight: 800;
}

.section-label b {
  font-size: 18px;
  font-weight: 800;
}

.section-content {
  max-width: 1440px;
  margin: 0 auto;
  padding: 48px 4vw 54px;
}

.two-column,
.feature-section {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 6vw;
}

h2 {
  margin: 0;
  font-size: var(--font-heading-large);
  font-weight: 800;
  line-height: 1.45;
  letter-spacing: 0;
}

h3 {
  margin: 0 0 14px;
  font-size: var(--font-heading-medium);
  font-weight: 800;
}

p,
ol,
ul {
  margin-top: 0;
}

.intro {
  margin-top: 0;
  font-size: var(--font-body);
  font-weight: 700;
  line-height: 1.55;
}

.real-screen-grid {
  margin-top: 46px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 288px));
  justify-content: center;
  gap: 48px;
  align-items: start;
}

.real-screen-grid figure {
  width: min(100%, 288px);
  margin: 0;
}

.real-screen-grid figcaption {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 12px;
  padding-bottom: 9px;
  border-bottom: 1px solid var(--line);
}

.real-screen-grid figcaption b {
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: var(--font-heading-small);
  font-weight: 700;
  letter-spacing: 0;
}

.real-screen-grid figcaption span {
  color: var(--sub);
  font-size: var(--font-body);
  font-weight: 700;
}

.real-screen-grid img {
  display: block;
  width: 100%;
  max-width: 288px;
  height: auto;
  object-fit: contain;
  object-position: top center;
  border: 1px solid #d8d8d3;
  border-radius: 8px;
  background: #ffffff;
}

.feature-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--ink);
}

.feature-list li {
  padding: 17px 0;
  display: grid;
  grid-template-columns: 1fr;
  border-bottom: 1px solid var(--line);
}

.feature-list b {
  font-size: var(--font-heading-small);
}

.use-list {
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 34px;
  list-style: none;
  border-top: 1px solid var(--ink);
}

.use-list li {
  padding: 17px 0;
  border-bottom: 1px solid var(--line);
  font-size: var(--font-heading-small);
  font-weight: 700;
}

.note {
  margin: 24px 0 0;
  color: var(--sub);
  font-size: var(--font-body);
}

.faq-grid {
  margin-top: 46px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 42px;
}

.faq-grid h3 {
  font-size: var(--font-heading-medium);
  line-height: 1.8;
}

details {
  border-bottom: 1px solid var(--line);
}

summary {
  padding: 18px 0;
  cursor: pointer;
  font-size: var(--font-body);
  font-weight: 700;
}

details p {
  margin: 0;
  padding: 0 0 20px;
  color: var(--sub);
  font-size: var(--font-body);
  line-height: 1.8;
}

.form-button {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
  min-width: 330px;
  margin: 24px 0 10px;
  padding: 15px 18px;
  border: 2px solid #111111;
  color: #111111;
  background: #93D2D7;
  font-size: var(--font-body);
  font-weight: 700;
  text-decoration: none;
}

.form-button span {
  font-size: 22px;
}

.form-button:hover {
  color: #ffffff;
  background: #111111;
}

.contact-en {
  margin: 0;
  color: var(--sub);
  font-size: var(--font-body);
  font-weight: 700;
}

.privacy h3 {
  margin: 0 0 4px;
  font-size: var(--font-heading-medium);
  line-height: 1.8;
}

.privacy h3 + p {
  margin-top: 0;
}

.privacy h3:not(:first-child) {
  margin-top: 28px;
}

.privacy p {
  margin: 0 0 24px;
  color: #444444;
  font-size: var(--font-body);
  line-height: 1.8;
}

.privacy ul {
  margin: 0 0 26px;
  padding-left: 1.2rem;
  color: #444444;
  font-size: var(--font-body);
  line-height: 1.8;
}

.updated {
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: var(--font-body);
}

footer {
  padding: 38px 4vw;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 20px;
  border-top: 1px solid var(--line);
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 10px;
  letter-spacing: 0.02em;
}

footer b,
footer span {
  font-weight: 700;
}

footer span:last-child {
  text-align: right;
}

@media (max-width: 980px) {
  .bunseido-header {
    grid-template-columns: 1fr;
  }

  .bunseido-logo {
    border-right: 0;
    border-bottom: 1px solid #111111;
  }

  .bunseido-nav a {
    min-height: 65px;
  }
}

@media (max-width: 820px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .two-column,
  .feature-section,
  .real-screen-grid,
  .faq-grid {
    grid-template-columns: 1fr;
  }

  .real-screen-grid {
    gap: 42px;
    justify-items: center;
  }

  .section-content {
    padding: 56px 5vw 68px;
  }

  footer {
    grid-template-columns: 1fr;
  }

  footer span:last-child {
    text-align: left;
  }
}

@media (max-width: 720px) {
  .bunseido-header {
    min-height: 0;
  }

  .bunseido-logo {
    padding: 17px 18px;
  }

  .bunseido-logo span {
    font-size: 30px;
  }

  .bunseido-nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .bunseido-nav a {
    min-height: 52px;
    padding: 8px 5px;
    border-bottom: 1px solid #555555;
    font-size: 13px;
  }

  .bunseido-nav a::after {
    right: 22px;
    bottom: 12px;
    left: 22px;
  }

  .hero {
    min-height: auto;
    gap: 42px;
    padding-top: 54px;
  }

  .hero h1 {
    font-size: 52px;
  }

  .hero-screenshot {
    height: 360px;
  }

  .section-label {
    height: 52px;
    grid-template-columns: 58px 1fr;
  }

  .section-label span {
    font-size: 16.8px;
  }

  .section-label b {
    font-size: 15.6px;
  }

  .use-list {
    grid-template-columns: 1fr;
  }

  .form-button {
    min-width: 0;
    width: 100%;
  }
}