:root {
  --bg: #f7f6f3;
  --card: #ffffff;
  --ink: #15171f;
  --muted: #5d6068;
  --line: #e6e3dc;
  --green: #1f7a3d;
  --green-soft: #e6f1e8;
  --pink: #f4aec7;
  --radius: 20px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  overflow-wrap: anywhere;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--green); }

.wrap { width: 100%; max-width: 1040px; margin: 0 auto; padding: 0 20px; }

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 0;
}

.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--ink); text-decoration: none; }
.brand img { width: 36px; height: 36px; border-radius: 9px; }

.lang { font-size: 14px; color: var(--muted); text-decoration: none; border: 1px solid var(--line); border-radius: 999px; padding: 4px 14px; background: var(--card); }

.hero { display: grid; gap: 28px; padding: 12px 0 40px; align-items: center; }

.eyebrow { display: inline-block; font-size: 13px; font-weight: 600; color: var(--green); background: var(--green-soft); border-radius: 999px; padding: 3px 12px; margin: 0 0 12px; }

h1 { font-size: clamp(28px, 7vw, 44px); line-height: 1.25; margin: 0 0 14px; letter-spacing: -0.01em; }

h2 { font-size: clamp(22px, 5vw, 30px); line-height: 1.3; margin: 0 0 8px; }

h3 { font-size: 18px; line-height: 1.4; margin: 0 0 6px; }

.lede { font-size: 17px; color: #2d3038; margin: 0 0 18px; }

.stores { display: flex; flex-wrap: wrap; gap: 10px; margin: 0 0 12px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  border-radius: 14px;
  font-weight: 700;
  font-size: 16px;
  text-decoration: none;
  background: var(--ink);
  color: #fff;
  border: 2px solid var(--ink);
}

.btn.alt { background: var(--card); color: var(--ink); }

.btn:focus-visible, .lang:focus-visible, a:focus-visible { outline: 3px solid var(--green); outline-offset: 2px; }

.note { font-size: 14px; color: var(--muted); margin: 0; }

.tags { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 16px 0 0; }
.tags li { font-size: 13px; background: var(--card); border: 1px solid var(--line); border-radius: 999px; padding: 2px 12px; color: var(--muted); }

.shot { border-radius: 28px; overflow: hidden; border: 1px solid var(--line); box-shadow: 0 10px 30px rgba(21, 23, 31, 0.10); background: var(--card); }
.hero .shot { width: min(76%, 340px); margin: 0 auto; }

section { padding: 36px 0; }

.sub { color: var(--muted); margin: 0 0 24px; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }

.feature { display: grid; gap: 18px; align-items: center; margin-bottom: 16px; }
.feature .shot { width: min(72%, 300px); margin: 0 auto; }
.feature p { margin: 0; color: #2d3038; }

.swatches { display: flex; gap: 6px; margin: 0 0 10px; padding: 0; list-style: none; }
.swatches li { width: 22px; height: 22px; border-radius: 50%; border: 2px solid #fff; box-shadow: 0 0 0 1px var(--line); }

.steps { list-style: none; counter-reset: step; padding: 0; margin: 0; display: grid; gap: 12px; }
.steps li { counter-increment: step; display: grid; grid-template-columns: 44px 1fr; gap: 14px; align-items: start; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }
.steps li::before { content: counter(step); width: 44px; height: 44px; border-radius: 50%; background: var(--green); color: #fff; font-weight: 700; display: grid; place-items: center; font-size: 18px; }
.steps h3 { margin-bottom: 2px; }
.steps p { margin: 0; color: #2d3038; }

.controls { margin: 0; padding-left: 20px; }
.controls li { margin-bottom: 6px; }

details { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 0 18px; margin-bottom: 10px; }
summary { cursor: pointer; font-weight: 700; padding: 14px 0; list-style-position: outside; }
details p { margin: 0 0 14px; color: #2d3038; }

.cta { text-align: center; background: var(--ink); color: #fff; border-radius: 28px; padding: 36px 20px; margin: 12px 0 40px; }
.cta h2 { color: #fff; }
.cta p { margin: 0 0 18px; color: #d9dae0; }
.cta .stores { justify-content: center; margin: 0; }
.cta .btn { background: #fff; color: var(--ink); border-color: #fff; }
.cta .btn.alt { background: transparent; color: #fff; border-color: #fff; }

footer { border-top: 1px solid var(--line); padding: 24px 0 40px; font-size: 14px; color: var(--muted); }
footer ul { display: flex; flex-wrap: wrap; gap: 8px 20px; list-style: none; padding: 0; margin: 0 0 12px; }
footer a { color: var(--ink); }
footer p { margin: 0; }

@media (min-width: 760px) {
  .wrap { padding: 0 32px; }
  .hero { grid-template-columns: 1.15fr 0.85fr; gap: 48px; padding: 28px 0 56px; }
  .hero .shot { width: 100%; max-width: 340px; margin: 0 0 0 auto; }
  .feature { grid-template-columns: 300px 1fr; gap: 36px; padding: 28px; }
  .feature.flip { grid-template-columns: 1fr 300px; }
  .feature.flip .shot { order: 2; }
  .feature .shot { width: 100%; }
  .steps { grid-template-columns: repeat(3, 1fr); }
  .steps li { grid-template-columns: 1fr; }
  section { padding: 52px 0; }
}