@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;600;700&family=Playfair+Display:wght@500;600&display=swap');

:root {
  --ink: #172126;
  --muted: #68767a;
  --line: #dfe5e4;
  --cream: #f4f1eb;
  --mint: #edf4f1;
  --dark: #213438;
  --green: #46675e;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: #fafbf9;
  font-family: 'Noto Sans JP', sans-serif;
  line-height: 1.9;
}

img {
  display: block;
  max-width: 100%;
}

.wrap {
  width: min(1180px, calc(100% - 56px));
  margin: auto;
}

.narrow {
  width: min(900px, calc(100% - 56px));
}

.site-header {
  position: absolute;
  z-index: 10;
  top: 0;
  width: 100%;
  border-bottom: 1px solid #ffffff35;
}

.nav {
  height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: .08em;
  font-size: 1.15rem;
}

.logo span {
  font-weight: 400;
}

.nav nav {
  display: flex;
  gap: 30px;
  align-items: center;
}

.nav nav a {
  color: #fff;
  text-decoration: none;
  font-size: .82rem;
}

.nav-cta {
  padding: 9px 17px;
  border: 1px solid #ffffff80;
  border-radius: 99px;
}

.hero {
  min-height: 780px;
  color: #fff;
  position: relative;
  overflow: hidden;
  background: linear-gradient(120deg, #243b3d, #56736b 52%, #a9b9ad);
}

.hero:before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, #17282dbb, #17282d22), url('image/hero.jpg') center/cover no-repeat;
  opacity: .55;
}

.hero-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: #dce8d355;
  filter: blur(60px);
  right: -150px;
  bottom: -160px;
}

.hero-grid {
  position: relative;
  z-index: 2;
  min-height: 780px;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  align-items: center;
  gap: 80px;
  padding-top: 80px;
}

.kicker,
.eyebrow {
  font-size: .72rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: #7b928c;
}

.hero .kicker {
  color: #d9e5df;
}

.hero h1 {
  font-size: clamp(3.5rem, 4vw, 5rem);
  line-height: 1.05;
  letter-spacing: -.06em;
  margin: 22px 0;
}

.hero h1 em {
  font-family: 'Playfair Display', serif;
  font-style: normal;
  font-weight: 500;
}

.lead {
  font-size: 1.08rem;
  color: #dce7e4;
}

.hero-badges {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 34px;
}

.hero-badges span {
  font-size: .78rem;
  border: 1px solid #ffffff55;
  border-radius: 99px;
  padding: 7px 13px;
  background: #ffffff12;
}

.hero-visual {
  position: relative;
}

.image-frame {
  background: #fff;
  padding: 14px;
  box-shadow: 0 35px 90px #10272d55;
  transform: rotate(2deg);
}

.image-frame img {
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
}

.scan {
  position: absolute;
  bottom: -25px;
  left: -30px;
  background: #fff;
  color: var(--ink);
  padding: 14px 20px;
  font-size: .7rem;
  letter-spacing: .16em;
  box-shadow: 0 15px 35px #152c321c;
}

.section {
  padding: 125px 0;
}

.cream {
  background: var(--cream);
}

.intro {
  text-align: center;
  padding: 100px 0;
}

.intro h2,
.section h2 {
  font-size: clamp(2.1rem, 3vw, 2.5rem);
  line-height: 1.18;
  letter-spacing: -.045em;
  margin: 10px 0 25px;
}

.section h2 span {
  font-size: .5em;
  font-weight: 500;
  letter-spacing: 0;
}

.section-lead {
  color: var(--muted);
  max-width: 680px;
}

.challenge-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  margin-top: 30px;
  border: 1px solid var(--line);
}

.challenge-grid article {
  background: var(--cream);
  padding: 19px;
  min-height: 200px;
}

.num {
  font-family: 'Playfair Display', serif;
  font-size: 1rem;
  color: #91a49e;
  margin-bottom: 45px;
}

.challenge-grid h3 {
  font-size: 1.08rem;
  line-height: 1.55;
}

.challenge-grid p {
  color: var(--muted);
  font-size: .9rem;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-top: 65px;
}

.steps > div {
  padding: 40px;
  border-top: 1px solid var(--line);
  position: relative;
}

.steps > div + div {
  border-left: 1px solid var(--line);
}

.steps b {
  font-family: 'Playfair Display', serif;
  font-size: 3rem;
  font-weight: 500;
  color: #8aa19a;
}

.steps h3 {
  font-size: 1.2rem;
  line-height: 1.5;
}

.steps p {
  color: var(--muted);
  font-size: .9rem;
}

.use-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin-top: 60px;
}

.use-grid article {
  background: #fff;
}

.use-grid img {
  width: 100%;
  height: 360px;
  object-fit: cover;
}

.use-grid div {
  padding: 30px;
}

.use-grid small {
  color: #7a918b;
  letter-spacing: .15em;
}

.use-grid h3 {
  font-size: 1.45rem;
  margin: 8px 0;
}

.use-grid p {
  color: var(--muted);
}

.indoor {
  background: #e9f1ee;
}

.monitor {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: #fff;
  margin-top: 60px;
  align-items: stretch;
}

.monitor-copy {
  padding: 60px;
}

.monitor-copy small {
  letter-spacing: .16em;
  color: #7b918c;
}

.monitor-copy h3 {
  font-size: 1.7rem;
}

.monitor-copy p,
.monitor-copy li {
  color: var(--muted);
}

.monitor img {
  width: 100%;
  height: 100%;
  min-height: 430px;
  object-fit: cover;
}

.mini-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.mini-grid article {
  padding: 35px;
  background: #fff;
  border: 1px solid var(--line);
}

.icon {
  font-size: 2rem;
  margin-bottom: 25px;
}

.mini-grid small {
  letter-spacing: .13em;
  color: #789089;
}

.mini-grid h3 {
  font-size: 1.2rem;
}

.mini-grid p {
  color: var(--muted);
  font-size: .9rem;
}

.faq details {
  border-top: 1px solid var(--line);
  padding: 22px 0;
}

.faq details:last-child {
  border-bottom: 1px solid var(--line);
}

summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
  display: flex;
  justify-content: space-between;
}

summary:after {
  content: '+';
  font-size: 1.4rem;
  color: #80918e;
}

details[open] summary:after {
  content: '−';
}

.faq details p {
  color: var(--muted);
  padding: 15px 45px 0 0;
  margin: 0;
}

.cta-section {
  padding: 115px 0;
  background: var(--dark);
  color: #fff;
  text-align: center;
}

.cta-section .eyebrow {
  color: #9eb4ad;
}

.cta-section h2 {
  font-size: clamp(2.2rem, 3vw, 2.5rem);
  margin: 15px 0;
}

.cta-section p {
  color: #cbd8d5;
}

.cta-section a {
  display: inline-block;
  margin-top: 25px;
  padding: 14px 28px;
  border: 1px solid #ffffff66;
  color: #fff;
  text-decoration: none;
  border-radius: 99px;
}

footer {
  padding: 30px 0;
  background: #18272b;
  color: #afc0bc;
  font-size: .8rem;
}

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
    padding-top: 130px;
  }

  .hero {
    min-height: auto;
    padding-bottom: 100px;
  }

  .hero-grid {
    min-height: auto;
  }

  .hero-visual {
    max-width: 560px;
  }

  .challenge-grid {
    grid-template-columns: 1fr 1fr;
  }

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

  .steps,
  .mini-grid {
    grid-template-columns: 1fr;
  }

  .steps > div + div {
    border-left: 0;
  }

  .monitor img {
    min-height: 300px;
  }
}

@media (max-width: 620px) {
  .wrap,
  .narrow {
    width: calc(100% - 30px);
  }

  .nav nav a:not(.nav-cta) {
    display: none;
  }

  .hero h1 {
    font-size: 3.25rem;
  }

  .section {
    padding: 80px 0;
  }

  .challenge-grid {
    grid-template-columns: 1fr;
  }

  .use-grid img {
    height: 260px;
  }

  .monitor-copy {
    padding: 32px;
  }

  .hero-badges {
    display: block;
  }

  .hero-badges span {
    display: inline-block;
    margin: 3px;
  }

  .image-frame {
    transform: none;
  }
}