:root {
  --bg: #07110d;
  --panel: #10271d;
  --line: rgba(224, 190, 112, 0.24);
  --gold: #d9ad5b;
  --gold-2: #f4d68a;
  --text: #f4f0e6;
  --muted: #c7bfae;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.42);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 50% -20%, rgba(40, 116, 75, 0.42), transparent 36rem),
    linear-gradient(180deg, #06100c 0%, #0a1711 48%, #07110d 100%);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", "YuGothic", "Noto Sans JP", sans-serif;
  line-height: 1.8;
}

a { color: inherit; }
img { display: block; max-width: 100%; height: auto; }
h2, h3, p { overflow-wrap: anywhere; }
h1, h2 { margin: 0; line-height: 1.28; letter-spacing: 0; }
h1 { font-size: clamp(1.75rem, 6.2vw, 3.65rem); }
h2 { font-size: clamp(1.75rem, 7vw, 3.15rem); }
h3 { margin: 0 0 8px; font-size: 1.12rem; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px clamp(18px, 4vw, 56px);
  border-bottom: 1px solid rgba(217, 173, 91, 0.16);
  background: rgba(7, 17, 13, 0.86);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  text-decoration: none;
}

.brand-mark {
  width: 40px;
  height: 40px;
  border: 1px solid rgba(244, 214, 138, 0.72);
  border-radius: 9px;
  object-fit: cover;
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.28);
}

.header-cta {
  min-height: 40px;
  padding: 7px 16px;
  border: 1px solid rgba(244, 214, 138, 0.7);
  border-radius: 999px;
  color: var(--gold-2);
  font-weight: 700;
  text-decoration: none;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
  min-height: calc(100svh - 65px);
  padding: 44px clamp(18px, 5vw, 72px) 56px;
  overflow: hidden;
}

.hero-copy { align-self: center; max-width: 720px; }
.hero-title {
  overflow-wrap: normal;
  word-break: keep-all;
}

.title-phrase {
  display: inline-block;
  white-space: nowrap;
}

.app-name, .eyebrow {
  margin: 0 0 12px;
  color: var(--gold-2);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0;
}

.lead {
  max-width: 620px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 1.04rem;
}

.store-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.store-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  min-width: min(100%, 240px);
  padding: 12px 18px;
  border: 1px solid var(--gold);
  border-radius: 8px;
  background: linear-gradient(180deg, var(--gold-2), var(--gold));
  color: #162015;
  font-weight: 800;
  line-height: 1.35;
  text-align: center;
  text-decoration: none;
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.22);
}

.store-button-outline { background: rgba(10, 26, 18, 0.56); color: var(--gold-2); }
.store-button-quiet { background: rgba(255,255,255,0.08); color: var(--text); border-color: rgba(255,255,255,0.24); }

.hero-phones {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 530px;
  padding-bottom: 24px;
}

.phone {
  width: min(72vw, 260px);
  border-radius: 34px;
  filter: drop-shadow(var(--shadow));
}

.phone-main { position: relative; z-index: 2; transform: translateX(-32px) rotate(-4deg); }
.phone-back { position: absolute; z-index: 1; transform: translate(62px, 28px) rotate(7deg); opacity: 0.82; }

section { padding: 62px clamp(18px, 5vw, 72px); }
.section-narrow { max-width: 980px; margin: 0 auto; }

.problem {
  border-block: 1px solid var(--line);
  background: rgba(12, 30, 21, 0.72);
}

.check-grid {
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 26px 0 0;
  list-style: none;
}

.check-grid li {
  min-height: 48px;
  padding: 12px 14px;
  border: 1px solid rgba(217, 173, 91, 0.2);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--muted);
}

.check-grid li::before { content: "●"; margin-right: 8px; color: var(--gold); }
.section-note { margin: 24px 0 0; color: var(--text); font-weight: 700; }

.feature {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  align-items: center;
  max-width: 1120px;
  margin: 0 auto;
}

.feature p:not(.eyebrow), .split-band p, .closing p {
  color: var(--muted);
  font-size: 1.02rem;
}

.feature-shot, .compact-phone, .title-phone { justify-self: center; }

.split-band, .modes {
  display: grid;
  gap: 28px;
  align-items: center;
  max-width: 1120px;
  margin: 34px auto;
  border-block: 1px solid var(--line);
  background: linear-gradient(135deg, rgba(23, 55, 39, 0.92), rgba(8, 19, 14, 0.94));
}

.split-band-dark { background: linear-gradient(135deg, rgba(18,20,17,0.96), rgba(25,46,33,0.92)); }
.compact-phone, .title-phone { width: min(64vw, 220px); }
.modes-intro { display: grid; gap: 22px; align-items: center; }
.mode-grid { display: grid; gap: 12px; }

.mode-grid article {
  padding: 18px;
  border: 1px solid rgba(217, 173, 91, 0.2);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.055);
}

.mode-grid p { margin: 0; color: var(--muted); }
.closing { max-width: 980px; margin: 0 auto; text-align: left; }

footer {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 22px;
  justify-content: center;
  padding: 28px 18px 42px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}

.go-page {
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: 20px;
}

.go-card {
  width: min(100%, 680px);
  padding: clamp(28px, 7vw, 52px);
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(12, 30, 21, 0.92);
  box-shadow: var(--shadow);
}

.go-card h1 { font-size: clamp(2rem, 9vw, 3.7rem); }

@media (min-width: 640px) {
  .check-grid, .mode-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .modes-intro { grid-template-columns: 240px minmax(0, 1fr); }
}

@media (min-width: 900px) {
  .hero { grid-template-columns: minmax(0, 1.02fr) minmax(360px, 0.78fr); align-items: center; padding-top: 36px; }
  .hero-phones { min-height: 680px; }
  .phone { width: min(24vw, 300px); }
  .feature, .split-band { grid-template-columns: 330px minmax(0, 1fr); }
  .feature-reverse { grid-template-columns: minmax(0, 1fr) 330px; }
  .feature-reverse img { grid-column: 2; grid-row: 1; }
  .feature-reverse div { grid-column: 1; grid-row: 1; }
  .split-band { grid-template-columns: minmax(0, 1fr) 280px; padding-inline: clamp(34px, 6vw, 72px); }
  .mode-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 420px) {
  .site-header { padding-inline: 14px; }
  .brand { font-size: 0.94rem; }
  .header-cta { padding-inline: 12px; }
  .store-button { width: 100%; }
}