/* GAERI — mobile-first */
:root {
  --bg: #f4f1eb;
  --bg-2: #ece7de;
  --ink: #1c2a28;
  --ink-soft: #3d4a47;
  --muted: #6a736f;
  --line: #ddd6c8;
  --card: #fffcf7;
  --accent: #2d5c56;
  --accent-2: #c45c38;
  --accent-soft: #e8f0ee;
  --shadow: 0 10px 30px rgba(28, 42, 40, 0.06);
  --radius: 18px;
  --max: 1080px;
  --font-serif: "Shippori Mincho", "Hiragino Mincho ProN", serif;
  --font-sans: "Zen Kaku Gothic New", "Hiragino Sans", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.75;
  font-size: 16px;
  letter-spacing: 0.01em;
}
img { max-width: 100%; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(14px);
  background: rgba(244, 241, 235, 0.86);
  border-bottom: 1px solid rgba(221, 214, 200, 0.7);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 64px;
}
.logo {
  font-family: var(--font-serif);
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--ink);
  text-decoration: none;
  font-size: 18px;
}
.logo:hover { text-decoration: none; }
.logo span { color: var(--accent); }

.nav {
  display: none;
  align-items: center;
  gap: 22px;
  margin-left: auto;
}
.nav a {
  color: var(--ink-soft);
  font-size: 14px;
  text-decoration: none;
}
.nav a:hover { color: var(--ink); }

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 999px;
  padding: 12px 20px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.04em;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s ease, background 0.15s ease, opacity 0.15s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--accent-2); color: #fff; }
.btn-primary:hover { background: #b04e2d; }
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}
.btn-disabled, .btn[disabled] {
  background: #c8c2b8;
  color: #fff;
  cursor: not-allowed;
  transform: none;
  opacity: 0.9;
}
.btn-sm { padding: 9px 16px; font-size: 13px; }

.menu-btn {
  display: inline-flex;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: transparent;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.menu-btn span, .menu-btn span:before, .menu-btn span:after {
  display: block;
  width: 16px;
  height: 1.5px;
  background: var(--ink);
  position: relative;
}
.menu-btn span:before, .menu-btn span:after {
  content: "";
  position: absolute;
  left: 0;
}
.menu-btn span:before { top: -5px; }
.menu-btn span:after { top: 5px; }

.mobile-nav {
  display: none;
  padding: 0 0 16px;
}
.mobile-nav.open { display: grid; gap: 8px; }
.mobile-nav a {
  color: var(--ink);
  padding: 8px 0;
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

/* Hero */
.hero {
  padding: 56px 0 36px;
  position: relative;
  overflow: hidden;
}
.hero:before {
  content: "";
  position: absolute;
  width: 420px;
  height: 420px;
  right: -140px;
  top: -80px;
  background: radial-gradient(circle, rgba(45, 92, 86, 0.12), transparent 70%);
  pointer-events: none;
}
.kicker {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--accent);
  margin-bottom: 16px;
  font-weight: 500;
}
.hero h1 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(32px, 9vw, 64px);
  line-height: 1.25;
  margin: 0 0 20px;
  letter-spacing: 0.02em;
}
.hero-lead {
  font-size: 16px;
  color: var(--ink-soft);
  max-width: 36em;
  margin: 0 0 28px;
}
.hero-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: wrap;
}
.note {
  display: inline-block;
  margin-top: 22px;
  font-size: 12px;
  color: var(--muted);
  background: var(--accent-soft);
  padding: 6px 12px;
  border-radius: 999px;
}

/* Sections */
section { padding: 64px 0; }
.section-head { margin-bottom: 28px; }
.section-head h2 {
  font-family: var(--font-serif);
  font-size: clamp(24px, 6vw, 36px);
  margin: 0 0 10px;
  font-weight: 600;
}
.section-head p { margin: 0; color: var(--muted); }

.cards {
  display: grid;
  gap: 14px;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 20px;
  box-shadow: var(--shadow);
}
.card h3 {
  margin: 0 0 8px;
  font-size: 18px;
  font-family: var(--font-serif);
  font-weight: 600;
}
.card p { margin: 0; color: var(--ink-soft); }
.card .num {
  font-family: var(--font-serif);
  color: var(--accent);
  font-size: 13px;
  letter-spacing: 0.12em;
  margin-bottom: 10px;
}

.plan-grid { display: grid; gap: 14px; }
.plan {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  min-height: 100%;
}
.plan.featured {
  border-color: var(--accent);
  background: linear-gradient(180deg, #f7fbf9, var(--card));
}
.plan h3 { margin: 0 0 8px; font-family: var(--font-serif); font-size: 22px; }
.price {
  font-family: var(--font-serif);
  font-size: 20px;
  margin: 8px 0 14px;
}
.price.pending { color: var(--muted); font-size: 16px; }
.plan ul {
  margin: 0 0 18px;
  padding: 0 0 0 1.1em;
  color: var(--ink-soft);
  flex: 1;
}
.plan li { margin: 0 0 6px; }
.badge {
  align-self: flex-start;
  font-size: 11px;
  letter-spacing: 0.1em;
  background: var(--accent);
  color: #fff;
  border-radius: 999px;
  padding: 3px 9px;
  margin-bottom: 10px;
}

.steps { display: grid; gap: 12px; }
.step {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 14px;
  align-items: start;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
}
.step-no {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 18px;
}
.step h3 { margin: 0 0 4px; font-size: 17px; }
.step p { margin: 0; color: var(--ink-soft); font-size: 14px; }

.coach {
  background: var(--card);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  padding: 28px 22px;
  text-align: left;
}
.coach h3 { margin: 0 0 8px; font-family: var(--font-serif); }
.coach p { margin: 0; color: var(--ink-soft); }

.faq { display: grid; gap: 10px; }
details {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px 16px;
}
summary {
  cursor: pointer;
  font-weight: 500;
  list-style: none;
}
summary::-webkit-details-marker { display: none; }
summary:after {
  content: "+";
  float: right;
  color: var(--muted);
  font-weight: 400;
}
details[open] summary:after { content: "–"; }
details p { margin: 10px 0 0; color: var(--ink-soft); }

/* Form */
.form-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 20px;
  box-shadow: var(--shadow);
}
.form-grid { display: grid; gap: 14px; }
label { display: grid; gap: 6px; font-size: 13px; color: var(--ink-soft); }
input, select, textarea {
  font: inherit;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  background: #fff;
  width: 100%;
}
textarea { min-height: 120px; resize: vertical; }
.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 8px;
}
.form-note {
  margin: 14px 0 0;
  font-size: 13px;
  color: var(--muted);
  background: var(--bg-2);
  border-radius: 12px;
  padding: 12px 14px;
}

footer {
  border-top: 1px solid var(--line);
  padding: 28px 0 40px;
  color: var(--muted);
  font-size: 13px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  align-items: end;
}
.footer-name {
  font-family: var(--font-serif);
  color: var(--ink);
  letter-spacing: 0.12em;
}

@media (min-width: 760px) {
  .menu-btn { display: none; }
  .nav { display: flex; }
  .cards, .plan-grid, .steps { grid-template-columns: repeat(3, 1fr); }
  .steps { grid-template-columns: 1fr; }
  .hero { padding: 88px 0 56px; }
  section { padding: 88px 0; }
}

@media (min-width: 960px) {
  .steps { grid-template-columns: repeat(4, 1fr); }
  .step { grid-template-columns: 1fr; }
}

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