:root {
  --cream: #f7f4ea;
  --paper: #fffdf8;
  --teal: #227c78;
  --deep: #183b45;
  --pale: #e7f3f1;
  --orange: #e9783d;
  --ink: #26383b;
  --muted: #667779;
  --line: #d9e5e1;
  --shadow: 0 16px 42px rgba(24, 59, 69, .11);
  --radius: 24px;
}

*, *::before, *::after { box-sizing: border-box; }
.sp-br { display: none; }
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Noto Sans JP", "Yu Gothic", "Hiragino Kaku Gothic ProN", sans-serif;
  line-height: 1.85;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
input, textarea, select { max-width: 100%; }

.container { width: min(1120px, calc(100% - 40px)); margin-inline: auto; }
.skip { position: absolute; left: -9999px; }
.skip:focus {
  left: 12px;
  top: 12px;
  z-index: 999;
  padding: 10px;
  background: #fff;
}
.eyebrow {
  color: var(--teal);
  font-size: .82rem;
  font-weight: 800;
  letter-spacing: .12em;
}
.section { padding: 100px 0; }
.section.alt { background: var(--cream); }
.section-head { max-width: 720px; margin: 0 auto 48px; text-align: center; }
.section-head h2 {
  margin: .25em 0;
  color: var(--deep);
  font-family: "Yu Mincho", "YuMincho", "Hiragino Mincho ProN", "MS PMincho", serif;
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.35;
}
.section-head p { color: var(--muted); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(34, 124, 120, .12);
  background: rgba(255, 253, 248, .95);
  backdrop-filter: blur(14px);
}
.header-inner { display: flex; align-items: center; height: 82px; gap: 28px; }

.hero {
  position: relative;
  display: grid;
  min-height: 690px;
  align-items: center;
  overflow: hidden;
  background: var(--cream);
}
.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.hero-copy { position: relative; z-index: 2; max-width: 650px; padding: 90px 0; }
.hero h1 {
  margin: .25em 0;
  color: var(--deep);
  font-family: "Yu Mincho", "YuMincho", "Hiragino Mincho ProN", "MS PMincho", serif;
  font-size: clamp(2.7rem, 6vw, 5.3rem);
  line-height: 1.18;
  letter-spacing: .02em;
}
.hero .lead { max-width: 560px; font-size: clamp(1rem, 2vw, 1.25rem); font-weight: 700; }

.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card { overflow: hidden; border-radius: var(--radius); background: #fff; box-shadow: var(--shadow); }
.feature-card img { width: 100%; height: 230px; object-fit: cover; }
.feature-card > div { padding: 26px; }
.access-box { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }

.site-footer { padding: 62px 0 96px; background: #102e35; color: #dce8e5; }
.ai-note { margin-top: 24px; color: #879b9d; font-size: .75rem; }
.copyright { font-size: .78rem; }
.fixed-cta { display: none; }

.reveal { opacity: 0; transform: translateY(24px); transition: .7s; }
.reveal.visible { opacity: 1; transform: none; }

@media (max-width: 850px) {
  .sp-br { display: block; }
  body { padding-bottom: 72px; }
  .container { width: min(calc(100% - 28px), 680px); }
  .section { padding: 72px 0; }
  .feature-grid, .access-box { grid-template-columns: 1fr; }
  .fixed-cta {
    position: fixed;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 80;
    display: grid;
    grid-template-columns: 1fr 1.25fr;
    gap: 8px;
    padding: 8px;
    background: #fff;
    box-shadow: 0 -8px 22px rgba(0, 0, 0, .12);
  }
  .fixed-cta a {
    display: grid;
    min-height: 54px;
    place-items: center;
    border-radius: 12px;
    font-weight: 900;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}