:root {
  --bg: #ffffff;
  --card: #f9f9fb;
  --ink: #0a0d1e;
  --muted: #555;
  --brand: #3b82f6;
  --brand-2: #6366f1;
  --lbrand: #1ad61a;
  --lbrand-2: #16b108;
  --ok: #34d399;
  --warning: #fde047;
  --danger: #fb7185;
  --radius: 18px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  --max: 1100px;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
.pc {
  display: block;
}
.sp {
  display: none;
}
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.fade-in.show {
  opacity: 1;
  transform: translateY(0);
}
body {
  margin: 0;
  font-family: "Noto Sans JP", system-ui, -apple-system, Segoe UI, Roboto,
    Helvetica, Arial;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  letter-spacing: 0.02em;
}
/* Header */
header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: saturate(180%) blur(12px);
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid #ddd;
}
.nav {
  max-width: var(--max);
  margin: auto;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 20px;
}
.brand {
  font-weight: 900;
  letter-spacing: 0.04em;
}
.brand .dot {
  color: var(--brand);
}
nav ul {
  display: flex;
  gap: 14px;
  list-style: none;
  margin: 0;
  padding: 0;
}
nav a {
  display: inline-block;
  padding: 10px 12px;
  border-radius: 12px;
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
}
nav a:hover,
nav a.active {
  color: var(--brand);
  background: #f0f4ff;
}
.cta {
  margin-left: auto;
}
/* Buttons */
.btn {
  appearance: none;
  border: none;
  cursor: pointer;
  font-weight: 700;
  border-radius: 999px;
  padding: 12px 18px;
  text-decoration: none;
  color: #fff;
  background: linear-gradient(90deg, var(--lbrand), var(--lbrand-2));
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}
.spbtn {
  color: #fff !important;
  max-width: 300px;
  margin-left: 1rem;
  margin-bottom: 2rem;
  margin-top: 1rem;
  text-align: center;
}
.spbtn:hover {
  color: #555 !important;
}
.btn:hover {
  transform: translateY(-1px);
}
.btn:active {
  transform: translateY(0);
}
.btn.secondary {
  background: #f0f0f0;
  color: var(--ink);
  box-shadow: none;
}
/* Sections */
section {
  padding: 72px 20px;
}
.wrap {
  max-width: var(--max);
  margin: auto;
}
.grid {
  display: grid;
  gap: 24px;
}
.two {
  grid-template-columns: 1fr 1fr;
}
.three {
  grid-template-columns: repeat(3, 1fr);
}
/* Hero */
.hero {
  padding: 84px 20px 40px;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  color: var(--ink);
  background: linear-gradient(90deg, var(--warning), #ffb84d);
  padding: 8px 12px;
  border-radius: 999px;
}
.h1 {
  font-weight: 900;
  line-height: 1.15;
  font-size: clamp(28px, 4.8vw, 56px);
  margin: 18px 0;
}
.lead {
  font-size: clamp(15px, 2.1vw, 20px);
  color: var(--muted);
  margin-bottom: 22px;
}
.heroCard {
  background: #fff;
  border: 1px solid #eee;
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}
.heroIllu {
  min-height: 280px;
  border-radius: var(--radius);
  background: #f6f8ff;
  border: 1px dashed #ccc;
}
.stack {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.topimg {
  width: 100%;
}
@media (max-width: 900px) {
  .hero {
    padding: 20px;
  }
  .toporder {
    order: -1;
    width: 60%;
    margin: 0 auto;
  }
  .heroIllu {
    min-height: 0px;
  }
}
/* Cards */
.card {
  background: #fff;
  border: 1px solid #eee;
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
}
.card h3 {
  margin: 0.2rem 0 0.4rem;
}
/* Steps */
.step {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 16px;
  align-items: center;
}
.step .num {
  width: 70px;
  height: 70px;
  display: grid;
  place-items: center;
  font-weight: 900;
  border-radius: 14px;
}
/* Testimonials */
.testi {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  align-items: center;
}
.avatar {
  width: 56px!important;
  height: 56px!important;
}
/* FAQ */
details {
  background: #fafafa;
  border: 1px solid #ddd;
  border-radius: 14px;
  padding: 16px 18px;
}
details + details {
  margin-top: 10px;
}
summary {
  cursor: pointer;
  font-weight: 700;
}
/* Footer */
footer {
  padding: 40px 20px;
  color: var(--muted);
  border-top: 1px solid #ddd;
  background: #f9f9fb;
}
/* Utilities */
.kicker {
  color: var(--brand);
  font-weight: 700;
  letter-spacing: 0.12em;
  font-size: 12px;
  text-transform: uppercase;
}
.big {
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 900;
}
.center {
  text-align: center;
}
.mono {
  font-variant-numeric: tabular-nums;
}
.mt-12 {
  margin-top: 12px;
}
.mt-16 {
  margin-top: 16px;
}
.mt-20 {
  margin-top: 20px;
}
.mt-28 {
  margin-top: 28px;
}
.mt-40 {
  margin-top: 40px;
}
/* Responsive */
@media (max-width: 900px) {
  .pc {
    display: none;
  }
  .sp {
    display: block;
  }
  .two {
    grid-template-columns: 1fr;
  }
  nav ul {
    display: none;
  }
  .menuBtn {
    display: inline-flex;
  }
}
@media (min-width: 901px) {
  .menuBtn {
    display: none;
  }
}
/* Mobile menu */
.mobileMenu {
  display: none;
  border-top: 1px solid #ddd;
  background: #fff;
}
.mobileMenu a {
  display: block;
  padding: 14px 20px;
  color: var(--muted);
  text-decoration: none;
}
.mobileMenu a:hover {
  background: #f0f0f0;
  color: var(--brand);
}
.mobileMenu.open {
  display: block;
}