:root {
  --bg: #081018;
  --bg-soft: #111d2a;
  --card: rgba(19, 31, 45, 0.82);
  --line: rgba(180, 220, 255, 0.2);
  --text: #f2f7fb;
  --muted: #afbdd0;
  --primary: #2de2c1;
  --accent: #ff945a;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

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

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Noto Sans JP", sans-serif;
  color: var(--text);
  background:
    radial-gradient(1000px 600px at 15% -10%, rgba(45, 226, 193, 0.24), transparent 65%),
    radial-gradient(900px 500px at 90% 0%, rgba(255, 148, 90, 0.2), transparent 60%),
    linear-gradient(180deg, var(--bg) 0%, #04080d 100%);
  min-height: 100vh;
}

.bg-noise {
  position: fixed;
  inset: 0;
  opacity: 0.05;
  pointer-events: none;
  background-image: radial-gradient(rgba(255, 255, 255, 0.3) 0.8px, transparent 0.8px);
  background-size: 3px 3px;
}

.container {
  width: min(1120px, calc(100% - 48px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  backdrop-filter: blur(10px);
  background: rgba(5, 10, 16, 0.7);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  z-index: 10;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
  font-family: "Manrope", sans-serif;
  font-weight: 800;
  letter-spacing: 0.02em;
  font-size: 1.35rem;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: block;
  flex: 0 0 auto;
}

.links {
  display: flex;
  gap: 24px;
}

.links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
}

.links a:hover {
  color: var(--text);
}

.lang-switcher {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
}

.lang-btn {
  appearance: none;
  border: 0;
  border-radius: 999px;
  padding: 8px 12px;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.lang-btn:hover {
  color: var(--text);
  transform: translateY(-1px);
}

.lang-btn[aria-pressed="true"] {
  color: #06232b;
  background: linear-gradient(90deg, var(--primary), #6cf0db);
}

.hero {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 34px;
  align-items: center;
  min-height: calc(100vh - 84px);
  padding: 48px 0;
}

.tag {
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  margin-bottom: 12px;
}

h1,
h2,
h3,
h4 {
  font-family: "Manrope", sans-serif;
  line-height: 1.15;
  margin: 0;
}

h1 {
  font-size: clamp(2.2rem, 6vw, 4.2rem);
  letter-spacing: -0.03em;
}

.hero-copy h1 {
  font-size: clamp(2.2rem, 5.1vw, 3.8rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.hero-copy > p {
  color: var(--muted);
  max-width: 55ch;
  line-height: 1.75;
}

.hero-copy span {
  color: var(--accent);
}

.hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 999px;
  padding: 12px 20px;
  text-decoration: none;
  color: #04242f;
  background: linear-gradient(90deg, var(--primary), #6cf0db);
  font-weight: 700;
  transition: transform 0.2s ease, filter 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
  filter: brightness(1.07);
}

.btn.ghost {
  color: var(--text);
  background: transparent;
  border: 1px solid var(--line);
}

.btn-sm {
  padding: 10px 16px;
  font-size: 0.9rem;
}

.hero-card {
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: var(--card);
  border-radius: 24px;
  padding: 28px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.hero-card .pulse {
  position: absolute;
  width: 260px;
  height: 260px;
  right: -70px;
  top: -70px;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(255, 148, 90, 0.5), rgba(255, 148, 90, 0));
}

.hero-card .label {
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  margin: 0;
}

.hero-card h2 {
  margin-top: 10px;
  margin-bottom: 16px;
  font-size: 1.8rem;
}

.hero-card ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.hero-card li {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--muted);
}

.hero-card li:last-child {
  border-bottom: 0;
}

.hero-card strong {
  color: var(--text);
}

.section {
  padding: 90px 0;
}

.section-head h3 {
  font-size: clamp(1.5rem, 3vw, 2.4rem);
  margin-top: 8px;
}

.grid {
  margin-top: 34px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.feature {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  padding: 24px;
}

.feature h4 {
  font-size: 1.2rem;
}

.feature p {
  color: var(--muted);
  line-height: 1.7;
}

.flow ol {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.flow li {
  display: grid;
  grid-template-columns: 66px 1fr;
  align-items: center;
  gap: 14px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  padding: 16px 18px;
}

.flow li span {
  font-family: "Manrope", sans-serif;
  font-size: 1.15rem;
  color: var(--accent);
}

.flow li p {
  margin: 0;
  color: var(--text);
}

.plans {
  margin-top: 34px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.plan {
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 18px;
  padding: 24px;
  background: rgba(255, 255, 255, 0.02);
}

.plan.featured {
  border-color: rgba(45, 226, 193, 0.65);
  background: linear-gradient(180deg, rgba(45, 226, 193, 0.12), rgba(45, 226, 193, 0.03));
}

.badge {
  display: inline-block;
  margin-bottom: 10px;
  font-size: 0.72rem;
  font-weight: 700;
  color: #06352f;
  background: var(--primary);
  border-radius: 999px;
  padding: 4px 10px;
}

.price {
  font-family: "Manrope", sans-serif;
  font-size: 2.2rem;
  margin: 12px 0;
}

.price span {
  color: var(--muted);
  font-size: 1rem;
}

.plan ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.8;
}

.cta {
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 24px;
  background:
    radial-gradient(320px 200px at 25% 0%, rgba(45, 226, 193, 0.23), transparent 70%),
    radial-gradient(300px 180px at 80% 0%, rgba(255, 148, 90, 0.2), transparent 72%),
    rgba(255, 255, 255, 0.03);
  padding: 58px 24px;
}

.cta h3 {
  font-size: clamp(1.4rem, 3vw, 2.2rem);
}

.cta p {
  color: var(--muted);
  margin-bottom: 24px;
}

.site-footer {
  padding: 34px 0 52px;
  color: #8294ab;
  text-align: center;
  font-size: 0.9rem;
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.delay-1 {
  transition-delay: 0.14s;
}

.delay-2 {
  transition-delay: 0.24s;
}

@media (max-width: 960px) {
  .links {
    display: none;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding: 40px 0 28px;
  }

  .hero-copy h1 {
    font-size: clamp(2rem, 9vw, 3.1rem);
    text-wrap: pretty;
  }

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

  .section {
    padding: 72px 0;
  }
}

@media (max-width: 520px) {
  .container {
    width: min(1120px, calc(100% - 30px));
  }

  .nav .btn-sm {
    width: auto;
    padding: 9px 12px;
    font-size: 0.82rem;
    white-space: nowrap;
    flex-shrink: 0;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .flow li {
    grid-template-columns: 1fr;
  }
}