:root {
  --ink: #171b21;
  --ink-soft: #565f6d;
  --paper: #ffffff;
  --paper-soft: #f6f4ef;
  --line: #e7e3d8;
  --navy: #16233b;
  --navy-soft: #24344f;
  --accent: #d9861f;
  --accent-deep: #b5690f;
  --danger: #c13f3f;
  --radius: 14px;
}

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }
img { max-width: 100%; display: block; }
.container { max-width: 1120px; margin: 0 auto; padding: 0 28px; }

/* ---- top nav ---- */
.topnav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.92);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.topnav .bar {
  max-width: 1120px;
  margin: 0 auto;
  padding: 16px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.topnav .logo { display: flex; align-items: baseline; gap: 8px; font-weight: 900; font-size: 20px; letter-spacing: 0.02em; }
.topnav .logo small { font-size: 11px; font-weight: 500; color: var(--ink-soft); letter-spacing: 0.08em; }
.topnav .links { display: flex; align-items: center; gap: 28px; font-size: 14px; }
.topnav .links a.nav-link { color: var(--ink-soft); text-decoration: none; }
.topnav .links a.nav-link:hover { color: var(--ink); }
.btn {
  display: inline-block;
  text-decoration: none;
  font-weight: 700;
  font-size: 14px;
  padding: 11px 22px;
  border-radius: 999px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-deep); }
.btn-outline { border: 1.5px solid var(--navy); color: var(--navy); }
.btn-outline:hover { background: var(--navy); color: #fff; }
.btn-lg { padding: 15px 30px; font-size: 15px; }

/* ---- hero ---- */
.hero {
  padding: 88px 0 72px;
  background:
    radial-gradient(900px 400px at 82% -10%, rgba(217,134,31,0.14), transparent 60%),
    var(--paper);
}
.hero .grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--accent-deep);
  background: rgba(217, 134, 31, 0.1);
  border: 1px solid rgba(217, 134, 31, 0.35);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 22px;
}
.hero h1 { font-size: 42px; line-height: 1.35; font-weight: 900; margin: 0 0 20px; letter-spacing: 0.01em; word-break: keep-all; overflow-wrap: break-word; }
.hero h1 em { font-style: normal; color: var(--accent-deep); }
.hero p.lead { font-size: 16.5px; color: var(--ink-soft); max-width: 46ch; margin: 0 0 32px; }
.hero .cta-row { display: flex; gap: 14px; flex-wrap: wrap; }
.hero .trust-row { display: flex; gap: 26px; margin-top: 44px; flex-wrap: wrap; }
.hero .trust-row .stat b { display: block; font-size: 22px; font-weight: 900; }
.hero .trust-row .stat span { font-size: 12.5px; color: var(--ink-soft); }

.hero-visual {
  background: var(--navy);
  border-radius: 20px;
  padding: 22px;
  box-shadow: 0 30px 60px -20px rgba(22, 35, 59, 0.45);
}
.hero-visual .mock-topbar { display: flex; gap: 6px; margin-bottom: 14px; }
.hero-visual .mock-topbar span { width: 9px; height: 9px; border-radius: 50%; background: rgba(255,255,255,0.18); }
.mock-card {
  background: #1d2c46;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 10px;
}
.mock-card .top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.mock-card .site { color: #fff; font-size: 13px; font-weight: 700; }
.mock-card .loc { color: rgba(255,255,255,0.45); font-size: 11px; }
.mock-card .wbgt { color: #fff; font-size: 28px; font-weight: 900; font-variant-numeric: tabular-nums; }
.mock-card .pill { font-size: 11px; font-weight: 700; padding: 3px 10px; border-radius: 999px; color: #1d2c46; }
.mock-alert { font-size: 11.5px; color: rgba(255,255,255,0.75); padding: 8px 4px; border-top: 1px solid rgba(255,255,255,0.08); }

/* ---- section shell ---- */
section { padding: 84px 0; }
.section-alt { background: var(--paper-soft); }
.section-head { max-width: 640px; margin: 0 auto 48px; text-align: center; }
.section-head .kicker { font-size: 12.5px; font-weight: 700; color: var(--accent-deep); letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 10px; }
.section-head h2 { font-size: 30px; font-weight: 900; margin: 0 0 14px; word-break: keep-all; }
.section-head p { color: var(--ink-soft); font-size: 15px; margin: 0; }

/* ---- problem cards ---- */
.cards-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
}
.card .num { font-size: 12px; font-weight: 800; color: var(--accent-deep); margin-bottom: 12px; }
.card h3 { font-size: 17px; margin: 0 0 10px; }
.card p { font-size: 13.5px; color: var(--ink-soft); margin: 0; }

/* ---- flow steps ---- */
.flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.flow .step { text-align: center; position: relative; }
.flow .step .circle {
  width: 52px; height: 52px; border-radius: 50%;
  background: var(--navy); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 900; font-size: 17px; margin: 0 auto 14px;
}
.flow .step h4 { font-size: 15px; margin: 0 0 6px; }
.flow .step p { font-size: 13px; color: var(--ink-soft); margin: 0; }

/* ---- features ---- */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feature {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
}
.feature .icon {
  width: 40px; height: 40px; border-radius: 10px;
  background: rgba(217,134,31,0.12);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px; font-size: 19px;
}
.feature h3 { font-size: 15.5px; margin: 0 0 8px; }
.feature p { font-size: 13.5px; color: var(--ink-soft); margin: 0; }

/* ---- screenshot showcase ---- */
.showcase-frame {
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: 0 40px 80px -40px rgba(22,35,59,0.35);
}
.showcase-frame img { width: 100%; }

/* ---- trust / proof ---- */
.proof-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 40px; align-items: center; }
.proof-list { list-style: none; margin: 0; padding: 0; }
.proof-list li { display: flex; gap: 12px; padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 14.5px; }
.proof-list li:last-child { border-bottom: none; }
.proof-list li .mark { color: var(--accent-deep); font-weight: 900; }
.proof-card {
  background: var(--navy);
  color: #fff;
  border-radius: var(--radius);
  padding: 28px;
}
.proof-card .quote { font-size: 15px; line-height: 1.8; margin-bottom: 16px; }
.proof-card .who { font-size: 12.5px; color: rgba(255,255,255,0.6); }

/* ---- pricing ---- */
.pricing-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 40px;
  max-width: 760px;
  margin: 0 auto;
}
.pricing-formula {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  font-weight: 800;
  font-size: 18px;
  margin: 8px 0 28px;
}
.pricing-formula .chip {
  background: var(--paper-soft);
  border: 1px solid var(--line);
  padding: 10px 18px;
  border-radius: 10px;
  font-size: 14px;
}
.pricing-formula .plus { color: var(--ink-soft); font-weight: 400; }
.pricing-notes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 8px; }
.pricing-notes div { font-size: 13px; color: var(--ink-soft); }
.pricing-notes b { display: block; color: var(--ink); font-size: 13.5px; margin-bottom: 4px; }

/* ---- roadmap ---- */
.roadmap { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.roadmap .phase {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  background: var(--paper);
}
.roadmap .phase .tag { font-size: 11px; font-weight: 800; color: var(--accent-deep); margin-bottom: 8px; }
.roadmap .phase h4 { font-size: 14.5px; margin: 0 0 8px; }
.roadmap .phase p { font-size: 12.5px; color: var(--ink-soft); margin: 0; }

/* ---- final CTA ---- */
.cta-band {
  background: var(--navy);
  color: #fff;
  border-radius: 24px;
  padding: 56px;
  text-align: center;
  margin: 0 28px;
}
.cta-band h2 { font-size: 26px; margin: 0 0 12px; font-weight: 900; }
.cta-band p { color: rgba(255,255,255,0.75); margin: 0 0 28px; }
.cta-band .cta-row { justify-content: center; }

footer {
  padding: 40px 28px 60px;
  color: var(--ink-soft);
  font-size: 12.5px;
  text-align: center;
}
footer .foot-links { margin-top: 10px; }
footer .foot-links a { text-decoration: none; margin: 0 8px; }

@media (max-width: 860px) {
  .hero .grid, .proof-grid { grid-template-columns: 1fr; }
  .cards-3, .flow, .features, .roadmap, .pricing-notes { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 32px; }
}
@media (max-width: 560px) {
  .cards-3, .flow, .features, .roadmap, .pricing-notes { grid-template-columns: 1fr; }
  .hero .trust-row { gap: 18px; }
  .cta-band { padding: 36px 22px; margin: 0 16px; }
}