/* ──────────────────────────────────────────
 * Earthen bridge — Custom Styles
 * Tailwind CDN config: site/assets/js/tailwind-config.js
 * ────────────────────────────────────────── */

@import url('https://fonts.googleapis.com/css2?family=M+PLUS+Rounded+1c:wght@500;700;800&family=Noto+Sans+JP:wght@400;500;700&family=Outfit:wght@600;800&display=swap');

:root {
  --brand-primary: #5CAE3E;
  --brand-primary-dark: #3F8B27;
  --brand-primary-light: #E8F5DF;
  --cta: #FF7A29;
  --cta-hover: #E55F0E;
  --line: #06C755;
  --line-hover: #04A847;
  --bg-base: #FFFCF7;
  --bg-section: #F7F5F0;
  --ink-primary: #2B2B2B;
  --ink-secondary: #6B6B6B;
  --border-soft: #E5E0D5;
  --accent-warm: #FFD66E;
  --alert: #D7263D;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Noto Sans JP', "Hiragino Sans", "Yu Gothic", sans-serif;
  font-size: 16px;
  line-height: 1.8;
  letter-spacing: 0.05em;
  color: var(--ink-primary);
  background: var(--bg-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
  font-family: 'M PLUS Rounded 1c', 'Hiragino Maru Gothic ProN', sans-serif;
  font-weight: 800;
  line-height: 1.4;
  letter-spacing: 0.04em;
  color: var(--ink-primary);
}

.font-num { font-family: 'Outfit', system-ui, sans-serif; font-weight: 800; letter-spacing: 0.02em; }

/* ── Buttons ─────────────────────────── */
.btn-cta {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  background: var(--cta); color: #fff;
  border-radius: 999px;
  padding: 1rem 1.75rem;
  font-weight: 700;
  font-size: 1rem;
  transition: all 200ms ease-out;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(255,122,41,0.25);
  text-decoration: none;
}
.btn-cta:hover { background: var(--cta-hover); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(255,122,41,0.35); }

.btn-line {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  background: var(--line); color: #fff;
  border-radius: 999px;
  padding: 1rem 1.75rem;
  font-weight: 700;
  font-size: 1rem;
  transition: all 200ms ease-out;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(6,199,85,0.20);
  text-decoration: none;
}
.btn-line:hover { background: var(--line-hover); transform: translateY(-2px); }

.btn-outline {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  background: #fff;
  color: var(--brand-primary-dark);
  border: 2px solid var(--brand-primary-dark);
  border-radius: 999px;
  padding: 0.75rem 1.5rem;
  font-weight: 700;
  font-size: 0.95rem;
  transition: all 200ms ease-out;
  cursor: pointer;
  text-decoration: none;
}
.btn-outline:hover { background: var(--brand-primary-light); transform: translateY(-2px); }

/* ── Badges ────────────────────────── */
.badge-trust {
  display: inline-flex; align-items: center; gap: 0.375rem;
  background: #fff;
  color: var(--brand-primary-dark);
  border: 1px solid var(--brand-primary);
  border-radius: 999px;
  padding: 0.375rem 0.875rem;
  font-size: 0.875rem;
  font-weight: 700;
  white-space: nowrap;
}

/* ── Cards ─────────────────────────── */
.card {
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 2px 8px rgba(43,43,43,0.06);
  transition: transform 200ms ease-out, box-shadow 200ms ease-out;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 12px 28px rgba(43,43,43,0.10); }

.card-flat {
  background: #fff;
  border-radius: 16px;
  border: 1px solid var(--border-soft);
}

/* ── Sections ──────────────────────── */
.section { padding: 80px 0; }
@media (max-width: 768px) { .section { padding: 56px 0; } }
.section-alt { background: var(--bg-section); }
.section-mint { background: var(--brand-primary-light); }
.section-green { background: var(--brand-primary); color: #fff; }
.section-green h1, .section-green h2, .section-green h3 { color: #fff; }

.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 880px; margin: 0 auto; padding: 0 24px; }

/* ── Decorative ────────────────────── */
.section-divider {
  display: block;
  width: 100%;
  height: 24px;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 24' preserveAspectRatio='none'><path d='M0,12 Q300,0 600,12 T1200,12' fill='none' stroke='%235CAE3E' stroke-width='1.5' stroke-dasharray='4 4'/></svg>");
  background-size: 100% 100%;
  opacity: 0.4;
}

/* ── Typography utilities ──────────── */
.lead { font-size: 1.125rem; line-height: 1.9; color: var(--ink-secondary); }

/* ── Header ────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 40;
  background: rgba(255,252,247,0.96);
  backdrop-filter: saturate(150%) blur(8px);
  border-bottom: 1px solid var(--border-soft);
}

/* ── Mobile drawer ─────────────────── */
.mobile-menu {
  position: fixed; inset: 0;
  background: var(--bg-base);
  z-index: 60;
  transform: translateX(100%);
  transition: transform 250ms ease-out;
  overflow-y: auto;
}
.mobile-menu.open { transform: translateX(0); }
.mobile-menu .menu-link {
  display: block; padding: 16px 24px;
  border-bottom: 1px solid var(--border-soft);
  font-weight: 700;
  font-size: 1.0625rem;
  color: var(--ink-primary);
  text-decoration: none;
}
.mobile-menu .menu-sub {
  display: block; padding: 12px 24px 12px 48px;
  border-bottom: 1px solid var(--border-soft);
  font-size: 0.9375rem;
  color: var(--ink-secondary);
  text-decoration: none;
}

/* ── Sticky CTA (SP only) ──────────── */
.sticky-cta {
  position: fixed; bottom: 0; left: 0; right: 0;
  z-index: 50;
  display: flex;
  height: 64px;
  box-shadow: 0 -4px 16px rgba(0,0,0,0.10);
}
.sticky-cta a { flex: 1; display: flex; align-items: center; justify-content: center; gap: 0.375rem; color: #fff; text-decoration: none; font-weight: 700; }
.sticky-cta .ph { background: var(--cta); }
.sticky-cta .ln { background: var(--line); }
@media (min-width: 1024px) { .sticky-cta { display: none; } }
.has-sticky-cta { padding-bottom: 64px; }
@media (min-width: 1024px) { .has-sticky-cta { padding-bottom: 0; } }

/* ── FAQ accordion ─────────────────── */
.faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 0;
  font-weight: 700;
  font-size: 1.0625rem;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '＋';
  font-size: 1.25rem;
  color: var(--brand-primary-dark);
  transition: transform 200ms ease-out;
}
.faq-item[open] summary::after { content: '−'; }
.faq-item .faq-body { padding: 0 0 20px 0; color: var(--ink-secondary); line-height: 1.9; }
.faq-item { border-bottom: 1px solid var(--border-soft); }

/* ── Form ───────────────────────────── */
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 12px 14px;
  font-size: 16px;
  font-family: inherit;
  border: 1.5px solid var(--border-soft);
  border-radius: 10px;
  background: #fff;
  transition: border-color 150ms;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px rgba(92,174,62,0.15);
}
.form-label { font-weight: 700; font-size: 0.95rem; display: block; margin-bottom: 6px; }
.form-required { color: var(--alert); font-size: 0.8125rem; margin-left: 6px; font-weight: 700; }
.checkbox-pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 14px;
  border: 1.5px solid var(--border-soft);
  border-radius: 999px;
  background: #fff;
  cursor: pointer;
  font-size: 0.9375rem;
}
.checkbox-pill:has(input:checked) { background: var(--brand-primary-light); border-color: var(--brand-primary); }

/* ── Step timeline ──────────────────── */
.step-timeline { position: relative; padding-left: 32px; }
.step-timeline::before {
  content: ''; position: absolute; left: 12px; top: 8px; bottom: 8px;
  width: 2px; background: var(--brand-primary);
}
.step-item { position: relative; padding-bottom: 32px; }
.step-item::before {
  content: ''; position: absolute; left: -28px; top: 8px;
  width: 18px; height: 18px;
  background: var(--brand-primary);
  border-radius: 999px;
  border: 4px solid var(--bg-base);
  box-shadow: 0 0 0 2px var(--brand-primary);
}

/* ── Focus state global ─────────────── */
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 2px solid var(--brand-primary);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ── Reduced motion ─────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}

/* ── Image rounding ─────────────────── */
.img-rounded { border-radius: 16px; object-fit: cover; }