:root {
  --green: #66d896;
  --green-deep: #209c66;
  --mint: #e8fbf0;
  --ink: #17201c;
  --muted: #66736d;
  --line: rgba(23, 32, 28, 0.12);
  --paper: #fbfaf6;
  --white: #ffffff;
  --blue: #315bdc;
  --coral: #ff7d66;
  --yellow: #ffd84d;
  --shadow: 0 24px 70px rgba(20, 32, 26, 0.12);
  --radius: 24px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  margin: 0;
  background:
    linear-gradient(180deg, rgba(232, 251, 240, 0.72), rgba(251, 250, 246, 0) 520px),
    var(--paper);
  color: var(--ink);
  font-family:
    "Noto Sans JP",
    "Hiragino Kaku Gothic ProN",
    Meiryo,
    sans-serif;
  letter-spacing: 0;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 16px;
  z-index: 20;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 24px;
  align-items: center;
  width: min(1180px, calc(100% - 32px));
  height: 72px;
  margin: 16px auto 0;
  padding: 0 14px 0 22px;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 18px 50px rgba(31, 45, 38, 0.12);
  backdrop-filter: blur(18px);
}

.brand img {
  width: 154px;
  height: auto;
}

.header-nav {
  display: flex;
  justify-content: center;
  gap: clamp(14px, 2vw, 28px);
  color: #43504a;
  font-size: 14px;
  white-space: nowrap;
}

.header-nav a {
  transition:
    color 180ms ease,
    transform 180ms ease;
}

.header-nav a:hover {
  color: var(--green-deep);
  transform: translateY(-1px);
}

.header-actions,
.hero-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.solid-button,
.ghost-button,
.text-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border-radius: 999px;
  font-weight: 700;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    background 180ms ease;
}

.solid-button {
  padding: 0 22px;
  background: var(--ink);
  color: var(--white);
  box-shadow: 0 12px 26px rgba(23, 32, 28, 0.22);
}

.solid-button:hover,
.ghost-button:hover,
.text-link:hover {
  transform: translateY(-2px);
}

.ghost-button {
  border: 1px solid var(--line);
  padding: 0 18px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.45);
}

.large {
  min-height: 54px;
  padding: 0 28px;
}

.text-link {
  color: var(--green-deep);
}

.text-link::after {
  content: "";
  width: 24px;
  height: 1px;
  margin-left: 10px;
  background: currentColor;
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(480px, 1.08fr);
  gap: 48px;
  align-items: center;
  width: min(1180px, calc(100% - 32px));
  min-height: calc(100vh - 96px);
  margin: 0 auto;
  padding: 92px 0 82px;
}

.hero::before {
  content: "";
  position: absolute;
  right: -8vw;
  top: 88px;
  width: 48vw;
  height: 48vw;
  max-width: 620px;
  max-height: 620px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 25%, rgba(255, 216, 77, 0.68), transparent 28%),
    radial-gradient(circle at 78% 26%, rgba(49, 91, 220, 0.18), transparent 34%),
    radial-gradient(circle at 48% 70%, rgba(102, 216, 150, 0.52), transparent 42%);
  filter: blur(8px);
  opacity: 0.85;
  z-index: -1;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--green-deep);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 26px;
  font-size: clamp(44px, 7vw, 92px);
  line-height: 0.98;
  font-weight: 900;
  letter-spacing: 0;
}

h1 span {
  display: block;
  color: transparent;
  background: linear-gradient(90deg, var(--green-deep), var(--blue) 54%, var(--coral));
  background-clip: text;
}

.lead {
  max-width: 590px;
  color: #394640;
  font-size: clamp(16px, 1.6vw, 20px);
  line-height: 2;
}

.hero-actions {
  margin-top: 34px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  max-width: 620px;
  margin: 54px 0 0;
}

.hero-stats div {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.62);
}

.hero-stats dt {
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 12px;
}

.hero-stats dd {
  margin: 0;
  color: var(--ink);
  font-size: clamp(20px, 1.8vw, 26px);
  font-weight: 900;
  white-space: nowrap;
}

.hero-visual {
  position: relative;
  min-height: 650px;
}

.orbital-card {
  position: absolute;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.82);
  background: rgba(255, 255, 255, 0.72);
  box-shadow: var(--shadow);
  backdrop-filter: blur(22px);
}

.primary-panel {
  top: 44px;
  right: 0;
  width: min(92%, 640px);
  border-radius: 32px;
  padding: 18px;
  transform: rotate(1.5deg);
}

.panel-topline {
  display: flex;
  justify-content: space-between;
  margin-bottom: 14px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.panel-topline span:last-child {
  display: inline-flex;
  align-items: center;
  height: 24px;
  border-radius: 999px;
  padding: 0 10px;
  background: var(--mint);
  color: var(--green-deep);
}

.primary-panel img,
.ai-panel img,
.device {
  border-radius: 18px;
  border: 1px solid rgba(23, 32, 28, 0.08);
}

.ai-panel {
  left: 0;
  bottom: 62px;
  width: min(58%, 360px);
  border-radius: 28px;
  padding: 16px;
  transform: rotate(-5deg);
}

.ai-mark {
  display: inline-grid;
  place-items: center;
  width: 50px;
  height: 50px;
  border-radius: 16px;
  margin-bottom: 10px;
  background: linear-gradient(135deg, var(--ink), var(--blue));
  color: var(--white);
  font-weight: 900;
}

.ai-panel p {
  margin-bottom: 12px;
  font-weight: 800;
}

.floating-note {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1px solid rgba(255, 255, 255, 0.88);
  border-radius: 999px;
  padding: 13px 18px;
  background: rgba(255, 255, 255, 0.8);
  box-shadow: 0 18px 38px rgba(38, 62, 50, 0.12);
  color: #2c3833;
  font-size: 14px;
  font-weight: 800;
}

.note-one {
  left: 40px;
  top: 30px;
}

.note-two {
  right: 44px;
  bottom: 6px;
  background: rgba(23, 32, 28, 0.92);
  color: var(--white);
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 6px rgba(102, 216, 150, 0.16);
}

.brand-strip {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto 54px;
  border-block: 1px solid var(--line);
}

.brand-strip p {
  margin: 0;
  padding: 20px 10px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
  text-align: center;
}

.section {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 104px 0;
}

.section-kicker {
  display: grid;
  grid-template-columns: 0.56fr 1fr;
  gap: 52px;
  align-items: start;
}

.section-kicker.compact {
  display: block;
  max-width: 760px;
  margin-bottom: 36px;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(34px, 4.4vw, 60px);
  line-height: 1.08;
  font-weight: 900;
}

h3 {
  line-height: 1.45;
}

.intro-grid {
  display: grid;
  grid-template-columns: 0.56fr 1fr;
  gap: 52px;
  margin-top: 44px;
}

.intro-lead {
  color: #3f4b46;
  font-size: 17px;
  line-height: 2.15;
}

.principle-board {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.principle-board article,
.service-card,
.plan-row article,
.case-grid article,
.news-list article,
.company-card,
.contact-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.74);
  box-shadow: 0 16px 48px rgba(23, 32, 28, 0.06);
}

.principle-board article {
  min-height: 250px;
  padding: 26px;
}

.principle-board span,
.service-number,
.plan-row span {
  color: var(--green-deep);
  font-weight: 900;
}

.principle-board h3 {
  margin: 42px 0 12px;
  font-size: 24px;
}

.principle-board p,
.service-card p,
.product-copy p,
.plan-row p,
.case-grid p,
.news-list h3,
.company-card dd,
.contact-card h2 {
  color: var(--muted);
  line-height: 1.85;
}

.services {
  width: 100%;
  max-width: none;
  padding-inline: max(16px, calc((100vw - 1180px) / 2));
  background: #17201c;
  color: var(--white);
}

.services .eyebrow {
  color: var(--green);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 14px;
}

.service-card {
  grid-column: span 2;
  min-height: 320px;
  padding: 28px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.035)),
    rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow: none;
}

.service-card.featured {
  grid-column: span 3;
  background:
    linear-gradient(135deg, rgba(102, 216, 150, 0.24), rgba(49, 91, 220, 0.18)),
    rgba(255, 255, 255, 0.04);
}

.service-card:nth-child(2) {
  grid-column: span 3;
}

.service-card h3 {
  margin: 58px 0 16px;
  font-size: clamp(20px, 2vw, 28px);
}

.service-card p {
  color: rgba(255, 255, 255, 0.72);
}

.product {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(420px, 1.2fr);
  gap: 58px;
  align-items: center;
}

.product-copy p {
  font-size: 16px;
}

.check-list {
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 28px 0 0;
  list-style: none;
}

.check-list li {
  position: relative;
  min-height: 36px;
  padding: 6px 0 0 44px;
  font-weight: 800;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 2px;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background:
    linear-gradient(135deg, var(--green), var(--green-deep));
}

.check-list li::after {
  content: "";
  position: absolute;
  left: 10px;
  top: 11px;
  width: 10px;
  height: 6px;
  border: 2px solid var(--white);
  border-top: 0;
  border-right: 0;
  transform: rotate(-45deg);
}

.device-stack {
  position: relative;
  min-height: 520px;
}

.device {
  position: absolute;
  background: var(--white);
  box-shadow: var(--shadow);
}

.main-device {
  right: 0;
  top: 0;
  width: min(92%, 620px);
  transform: rotate(2deg);
}

.sub-device {
  left: 0;
  bottom: 0;
  width: min(54%, 330px);
  transform: rotate(-4deg);
}

.plans {
  padding-top: 70px;
}

.plan-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.plan-row article {
  padding: 28px;
}

.plan-row h3 {
  min-height: 70px;
  margin: 28px 0 10px;
  font-size: 24px;
}

.plan-row strong {
  display: block;
  margin-top: 28px;
  font-size: clamp(26px, 2.8vw, 40px);
  line-height: 1;
}

.plan-row small {
  color: var(--muted);
  font-size: 14px;
}

.cases {
  padding-top: 60px;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.case-grid article {
  min-height: 210px;
  padding: 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background:
    linear-gradient(135deg, rgba(102, 216, 150, 0.18), rgba(255, 255, 255, 0) 55%),
    rgba(255, 255, 255, 0.76);
}

.case-grid p {
  font-size: 13px;
}

.case-grid h3 {
  margin: 0;
  font-size: 22px;
}

.news {
  padding-top: 60px;
}

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

.news-list article {
  display: grid;
  grid-template-columns: 120px 100px 1fr;
  gap: 18px;
  align-items: baseline;
  border: 0;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  padding: 26px 0;
  background: transparent;
  box-shadow: none;
}

.news-list time {
  color: var(--muted);
  font-weight: 800;
}

.news-list span {
  display: inline-flex;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 5px 10px;
  color: var(--green-deep);
  font-size: 12px;
  font-weight: 800;
}

.news-list h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 800;
}

.company-contact {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 16px;
  padding-bottom: 88px;
}

.company-card,
.contact-card {
  padding: 34px;
}

.company-card dl {
  display: grid;
  gap: 18px;
  margin: 36px 0 0;
}

.company-card div {
  display: grid;
  grid-template-columns: 86px 1fr;
  gap: 18px;
  border-top: 1px solid var(--line);
  padding-top: 18px;
}

.company-card dt {
  color: var(--green-deep);
  font-weight: 900;
}

.company-card dd {
  margin: 0;
}

.contact-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 360px;
  background:
    linear-gradient(135deg, rgba(102, 216, 150, 0.4), rgba(255, 216, 77, 0.16)),
    var(--white);
}

.contact-card h2 {
  color: var(--ink);
  font-size: clamp(30px, 4vw, 52px);
}

.contact-card .solid-button {
  width: fit-content;
}

.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  border-top: 1px solid var(--line);
  padding: 34px 0 46px;
  color: var(--muted);
  font-size: 13px;
}

.footer img {
  width: 154px;
}

@media (max-width: 980px) {
  .site-header {
    grid-template-columns: auto auto;
    height: auto;
    min-height: 68px;
    border-radius: 28px;
    padding: 12px 14px;
  }

  .header-nav {
    order: 3;
    grid-column: 1 / -1;
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .header-actions {
    justify-content: end;
  }

  .hero,
  .product,
  .section-kicker,
  .intro-grid,
  .company-contact {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: 0;
    padding-top: 74px;
  }

  .hero-visual {
    min-height: 560px;
  }

  .brand-strip {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .principle-board,
  .plan-row {
    grid-template-columns: 1fr;
  }

  .service-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .service-card,
  .service-card.featured,
  .service-card:nth-child(2) {
    grid-column: span 1;
  }

  .case-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 680px) {
  .site-header {
    top: 8px;
    width: calc(100% - 16px);
    margin-top: 8px;
  }

  .brand img {
    width: 134px;
  }

  .header-actions .ghost-button {
    display: none;
  }

  .header-nav {
    flex-wrap: wrap;
    gap: 10px 16px;
    overflow: visible;
    white-space: normal;
  }

  .header-nav a {
    font-size: 12px;
  }

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

  .brand-strip p:last-child {
    grid-column: 1 / -1;
  }

  .solid-button {
    padding: 0 16px;
  }

  .hero {
    width: calc(100% - 28px);
    padding: 54px 0 60px;
  }

  h1 {
    font-size: clamp(42px, 14vw, 68px);
  }

  .hero-actions {
    flex-wrap: wrap;
  }

  .hero-stats {
    grid-template-columns: 1fr;
    margin-top: 36px;
  }

  .hero-visual {
    min-height: 480px;
  }

  .primary-panel {
    width: 100%;
  }

  .ai-panel {
    width: 68%;
    bottom: 34px;
  }

  .floating-note {
    border-radius: 20px;
    font-size: 12px;
  }

  .note-one {
    left: 8px;
    top: 6px;
  }

  .note-two {
    right: 8px;
    bottom: 0;
  }

  .section {
    width: calc(100% - 28px);
    padding: 74px 0;
  }

  .service-grid,
  .case-grid {
    grid-template-columns: 1fr;
  }

  .service-card {
    min-height: 260px;
  }

  .device-stack {
    min-height: 430px;
  }

  .main-device {
    width: 100%;
  }

  .sub-device {
    width: 62%;
  }

  .news-list article {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .company-card div {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
    width: calc(100% - 28px);
  }
}