:root {
  --green: #2f9e5a;
  --green-deep: #1f6b3d;
  --ink: #1a2420;
  --ink-soft: #44524c;
  --mist: #e8f0eb;
  --paper: #f3f7f4;
  --line: rgba(26, 36, 32, 0.12);
  --font-display: "Noto Sans JP", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: "Noto Sans JP", -apple-system, BlinkMacSystemFont, sans-serif;
  --max: 1200px;
  --page-pad: clamp(20px, 5vw, 48px);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

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

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 40;
  background: rgba(243, 247, 244, 0.86);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.site-header.is-solid {
  border-bottom-color: var(--line);
}

.header-inner {
  width: min(100%, var(--max));
  margin: 0 auto;
  padding: 14px var(--page-pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.logo img {
  border-radius: 8px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 22px;
  font-size: 0.92rem;
}

.nav a {
  color: var(--ink-soft);
}

.nav a:hover {
  color: var(--ink);
}

.nav-cta {
  padding: 8px 14px;
  border: 1px solid var(--ink);
  border-radius: 2px;
  color: var(--ink) !important;
  font-weight: 700;
}

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: var(--ink);
  background:
    radial-gradient(ellipse at 88% 18%, rgba(47, 158, 90, 0.16), transparent 42%),
    linear-gradient(180deg, #f7faf8 0%, var(--paper) 55%, #eaf2ec 100%);
}

.hero-inner {
  width: min(100%, var(--max));
  margin: 0 auto;
  padding: 120px var(--page-pad) 72px;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
}

.hero-copy {
  position: relative;
  z-index: 1;
}

.brand {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: var(--ink);
  animation: riseIn 0.9s var(--ease) both;
}

.headline {
  margin: 0 0 18px;
  max-width: 14em;
  font-family: var(--font-body);
  font-size: clamp(1.35rem, 2.8vw, 2rem);
  font-weight: 800;
  line-height: 1.45;
  letter-spacing: 0.01em;
  color: var(--ink);
  animation: riseIn 0.9s var(--ease) 0.12s both;
}

.lead {
  margin: 0 0 28px;
  max-width: 28em;
  color: var(--ink-soft);
  font-size: 1rem;
  animation: riseIn 0.9s var(--ease) 0.22s both;
}

.cta-row {
  animation: riseIn 0.9s var(--ease) 0.32s both;
}

.hero-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  animation: riseIn 1s var(--ease) 0.2s both;
}

.hero-phone {
  width: min(100%, 320px);
  height: auto;
  display: block;
  background: transparent;
  border: none;
  border-radius: 0;
  animation: heroFloat 7s ease-in-out infinite;
}

.hero-caption {
  margin: 14px 0 0;
  max-width: 320px;
  color: var(--ink-soft);
  font-size: 0.82rem;
  line-height: 1.55;
  text-align: center;
}

.btn-store {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  background: var(--ink);
  color: #fff;
  border-radius: 2px;
  font-weight: 700;
  letter-spacing: 0.02em;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease);
}

.btn-store:hover {
  transform: translateY(-2px);
  background: var(--green-deep);
}

.btn-store--on-dark {
  background: #fff;
  color: var(--ink);
}

.btn-store--on-dark:hover {
  background: var(--mist);
  color: var(--ink);
}

.section {
  width: min(100%, var(--max));
  margin: 0 auto;
  padding: 96px var(--page-pad);
}

.video-section {
  padding-top: 48px;
  padding-bottom: 48px;
}

.video-wrap {
  margin-top: 8px;
}

.demo-video {
  display: block;
  width: min(100%, 864px);
  height: auto;
  margin: 0 auto;
  background: #0c1c14;
  border-radius: 12px;
}

.video-caption {
  margin: 14px auto 0;
  max-width: 864px;
  color: var(--ink-soft);
  font-size: 0.9rem;
  line-height: 1.55;
  text-align: center;
}

.section-label {
  margin: 0 0 10px;
  color: var(--green-deep);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.section-title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.2vw, 2.4rem);
  font-weight: 800;
  letter-spacing: 0.01em;
  line-height: 1.35;
}

.section-lead {
  margin: 0 0 40px;
  max-width: 34em;
  color: var(--ink-soft);
}

.pain-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.pain-list li {
  display: grid;
  grid-template-columns: minmax(10rem, 0.9fr) 1.4fr;
  gap: 20px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.pain-list strong {
  font-size: 1.05rem;
}

.pain-list span {
  color: var(--ink-soft);
}

.how {
  background: linear-gradient(180deg, #fff 0%, var(--mist) 100%);
  width: 100%;
  max-width: none;
  padding-left: 0;
  padding-right: 0;
}

.how > * {
  width: min(100%, var(--max));
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--page-pad);
  padding-right: var(--page-pad);
  box-sizing: border-box;
}

.how .steps {
  width: min(100%, var(--max));
  margin: 0 auto;
  padding: 0 var(--page-pad);
  box-sizing: border-box;
}

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.steps li {
  padding-top: 8px;
}

.step-num {
  display: block;
  margin-bottom: 16px;
  color: var(--green);
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.steps h3 {
  margin: 0 0 8px;
  font-size: 1.15rem;
}

.steps p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px 40px;
}

.feature {
  padding-top: 18px;
  border-top: 2px solid var(--green);
}

.feature h3 {
  margin: 0 0 10px;
  font-size: 1.15rem;
}

.feature p {
  margin: 0;
  color: var(--ink-soft);
}

.phone-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: end;
}

.phone {
  margin: 0;
  overflow: hidden;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: #0c1c14;
  transform: translateY(12px);
  transition: transform 0.5s var(--ease);
}

.phone.is-in {
  transform: translateY(0);
}

.phone img {
  width: 100%;
  aspect-ratio: 9 / 19.5;
  object-fit: cover;
  object-position: top center;
}

.cta-band {
  width: 100%;
  max-width: none;
  padding: 0;
  background:
    linear-gradient(160deg, #1f6b3d 0%, #143d28 55%, #0f2a1c 100%);
  color: #f7fbf8;
}

.cta-band-inner {
  width: min(100%, var(--max));
  margin: 0 auto;
  padding: 96px var(--page-pad);
}

.cta-band h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 800;
}

.brand-sm {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.cta-band p {
  margin: 0 0 28px;
  color: rgba(247, 251, 248, 0.82);
}

.site-footer {
  background: #0f1a15;
  color: rgba(247, 251, 248, 0.78);
}

.footer-inner {
  width: min(100%, var(--max));
  margin: 0 auto;
  padding: 48px var(--page-pad) 56px;
}

.footer-brand {
  display: flex;
  gap: 14px;
  align-items: center;
  margin-bottom: 28px;
}

.footer-brand img {
  border-radius: 10px;
}

.footer-brand strong {
  display: block;
  color: #fff;
  margin-bottom: 4px;
}

.footer-brand p {
  margin: 0;
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 24px;
  margin-bottom: 28px;
  font-size: 0.9rem;
}

.footer-links a:hover {
  color: #fff;
}

.copyright {
  margin: 0;
  font-size: 0.8rem;
  color: rgba(247, 251, 248, 0.45);
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.is-in {
  opacity: 1;
  transform: translateY(0);
}

@keyframes riseIn {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes heroFloat {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

@media (max-width: 860px) {
  .nav a:not(.nav-cta) {
    display: none;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    padding-top: 108px;
    gap: 36px;
    text-align: center;
  }

  .lead {
    margin-inline: auto;
  }

  .cta-row {
    display: flex;
    justify-content: center;
  }

  .hero-phone {
    width: min(100%, 280px);
  }

  .pain-list li {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .steps,
  .feature-grid,
  .phone-row {
    grid-template-columns: 1fr;
  }

  .phone-row {
    max-width: 360px;
    margin-inline: auto;
  }
}

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

  .hero-phone,
  .hero-visual,
  .reveal,
  .brand,
  .headline,
  .lead,
  .cta-row {
    animation: none !important;
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}