:root {
  --color-green-900: #123d2a;
  --color-green-700: #1f8f4d;
  --color-green-600: #27a85d;
  --color-green-100: #eaf7ef;
  --color-text: #25312b;
  --color-muted: #66736c;
  --color-border: #dfe9e3;
  --color-bg: #ffffff;
  --color-bg-soft: #f6f9f7;
  --color-warning: #fff7e6;
  --color-warning-border: #f2d28b;
  --shadow-soft: 0 14px 36px rgba(18, 61, 42, 0.10);
  --shadow-card: 0 10px 24px rgba(18, 61, 42, 0.08);
  --radius-card: 8px;
  --radius-pill: 999px;
  --container: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0;
}

body.no-smooth-scroll,
body.no-smooth-scroll html {
  scroll-behavior: auto;
}

a {
  color: var(--color-green-700);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(31, 143, 77, 0.35);
  outline-offset: 4px;
}

img {
  max-width: 100%;
  height: auto;
}

.container {
  width: min(100% - 32px, var(--container));
  margin-inline: auto;
}

.narrow {
  max-width: 820px;
}

.section {
  padding: 64px 0;
}

.soft {
  background: var(--color-bg-soft);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(12px);
}

.header-inner {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 14px 0;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--color-green-900);
  font-weight: 800;
  line-height: 1;
}

.logo:hover {
  text-decoration: none;
}

.logo-mark {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  box-shadow: var(--shadow-card);
  object-fit: cover;
}

.site-nav,
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  font-size: 14px;
}

.site-nav a,
.footer-nav a {
  color: var(--color-text);
}

.site-nav a[aria-current="page"] {
  color: var(--color-green-700);
  font-weight: 700;
}

.hero {
  padding: 56px 0 72px;
  background:
    radial-gradient(circle at 82% 8%, rgba(39, 168, 93, 0.14), transparent 30%),
    linear-gradient(180deg, #f8fcfa 0%, #fff 100%);
}

.hero-grid {
  display: grid;
  gap: 40px;
  align-items: center;
}

.hero-copy .eyebrow {
  text-transform: none;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--color-green-700);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--color-green-900);
  line-height: 1.35;
  letter-spacing: 0;
}

h1 {
  font-size: 36px;
}

h1 span {
  display: block;
}

h2 {
  font-size: 26px;
}

h3 {
  font-size: 18px;
}

.hero-lead {
  margin: 20px 0 0;
  color: var(--color-muted);
  font-size: 17px;
}

.cta-row {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 20px;
  border-radius: var(--radius-pill);
  font-weight: 800;
  text-align: center;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.button:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.button-primary {
  background: var(--color-green-700);
  color: #fff;
  box-shadow: 0 12px 22px rgba(31, 143, 77, 0.24);
}

.button-primary:hover {
  background: var(--color-green-600);
}

.button-secondary {
  border: 1px solid var(--color-border);
  background: #fff;
  color: var(--color-green-900);
}

.release-note {
  margin: 16px 0 0;
  color: var(--color-muted);
  font-size: 14px;
}

.hero-visual {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 520px;
}

.hero-illustration {
  width: min(74vw, 300px);
  border-radius: 28px;
  box-shadow: var(--shadow-soft);
  object-fit: cover;
}

.problem p,
.document-page p {
  color: var(--color-muted);
}

.section-heading {
  margin-bottom: 28px;
}

.card-grid {
  display: grid;
  gap: 16px;
}

.feature-card,
.support-box {
  padding: 22px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: #fff;
  box-shadow: var(--shadow-card);
}

.feature-icon {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 14px;
  border-radius: 50%;
  background: var(--color-green-100);
  color: var(--color-green-700);
  font-weight: 900;
}

.feature-card p {
  margin: 10px 0 0;
  color: var(--color-muted);
}

.steps {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.steps li {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 14px;
  align-items: center;
  padding: 18px;
  border-radius: var(--radius-card);
  background: #fff;
  border: 1px solid var(--color-border);
}

.steps span {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--color-green-700);
  color: #fff;
  font-weight: 900;
}

.screenshots {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  justify-items: center;
}

.screen-card {
  display: grid;
  gap: 12px;
  width: 100%;
  max-width: 300px;
  margin: 0;
}

.screen-card img {
  width: 100%;
  height: auto;
  border-radius: 24px;
  background: #fff;
  box-shadow: var(--shadow-soft);
  object-fit: contain;
}

.screen-card figcaption {
  text-align: center;
  color: var(--color-green-900);
  font-size: 14px;
  font-weight: 800;
}

.recommend {
  background: linear-gradient(180deg, #fff 0%, var(--color-bg-soft) 100%);
}

.check-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 30px;
  color: var(--color-text);
}

.check-list li::before {
  content: "";
  position: absolute;
  top: 0.72em;
  left: 0;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-green-700);
  transform: translateY(-50%);
}

.check-list li::after {
  content: "";
  position: absolute;
  top: 0.67em;
  left: 5px;
  width: 6px;
  height: 9px;
  border-right: 2px solid #fff;
  border-bottom: 2px solid #fff;
  transform: translateY(-50%) rotate(45deg);
}

.check-list.compact {
  gap: 8px;
}

.notice-box {
  padding: 24px;
  border: 1px solid var(--color-warning-border);
  border-radius: var(--radius-card);
  background: var(--color-warning);
}

.notice-box p {
  margin: 12px 0 0;
  color: #5d4a21;
}

.faq-list {
  display: grid;
  gap: 12px;
}

details {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: #fff;
  box-shadow: 0 6px 18px rgba(18, 61, 42, 0.06);
}

summary {
  cursor: pointer;
  padding: 18px 20px;
  color: var(--color-green-900);
  font-weight: 800;
}

details p {
  margin: 0;
  padding: 0 20px 20px;
  color: var(--color-muted);
}

.document-page {
  padding: 48px 0 72px;
}

.document-page h1 {
  margin-bottom: 16px;
}

.document-page section {
  padding: 28px 0;
  border-top: 1px solid var(--color-border);
}

.document-page h2 {
  margin-bottom: 12px;
  font-size: 22px;
}

.doc-meta {
  padding: 16px;
  border-radius: var(--radius-card);
  background: var(--color-bg-soft);
}

.support-box {
  margin: 24px 0 34px;
}

.support-box p {
  margin: 0;
}

.support-box p + p {
  margin-top: 10px;
}

.site-footer {
  padding: 36px 0;
  background: var(--color-green-900);
  color: #fff;
}

.footer-inner {
  display: grid;
  gap: 16px;
}

.footer-brand {
  margin: 0;
  font-weight: 900;
}

.footer-nav a,
.copyright {
  color: rgba(255, 255, 255, 0.82);
}

.copyright {
  margin: 0;
  font-size: 14px;
}

@media (min-width: 700px) {
  .header-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .cta-row {
    flex-direction: row;
    align-items: center;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1.18fr) minmax(300px, 0.82fr);
  }

  h1 {
    font-size: 48px;
  }

  h2 {
    font-size: 32px;
  }

  .card-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .steps li {
    grid-template-columns: 1fr;
    align-items: start;
  }

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

  .screen-card {
    max-width: 300px;
  }

  .footer-inner {
    grid-template-columns: 1fr auto;
    align-items: center;
  }

  .copyright {
    grid-column: 1 / -1;
  }
}

@media (min-width: 980px) {
  .section {
    padding: 86px 0;
  }

  .hero {
    padding: 82px 0 96px;
  }

  .hero .container {
    width: min(100% - 48px, 1320px);
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(280px, 0.45fr);
    gap: 36px;
  }

  h1 {
    font-size: 42px;
    line-height: 1.28;
  }

  h1 span {
    white-space: nowrap;
  }

  .hero-visual {
    justify-self: center;
    width: min(100%, 340px);
    transform: translateX(-20px);
  }

  .hero-illustration {
    width: 340px;
  }

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

  .screenshots {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
  }

  .screen-card {
    max-width: 240px;
  }
}

@media (min-width: 1180px) {
  .hero-grid {
    grid-template-columns: minmax(0, 1.18fr) minmax(360px, 0.82fr);
    gap: 44px;
  }

  h1 {
    font-size: 48px;
  }

  .hero-visual {
    justify-self: center;
    width: min(100%, 380px);
    transform: translateX(-40px);
  }

  .hero-illustration {
    width: 330px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}