*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --green: #28b420;
  --green-dark: #1e8c18;
  --green-light: #e8f8e7;
  --ink: #1a1a1a;
  --ink-soft: #4a4a4a;
  --ink-muted: #767676;
  --border: #e2e8df;
  --white: #ffffff;
  --bg-subtle: #f7fbf6;
  --radius: 12px;
  --max-w: 860px;
}

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.7;
  font-size: 16px;
}

a { color: var(--green-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
}

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  min-height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
}

.nav-logo img { width: 28px; height: 28px; }
.nav-links { display: flex; gap: 24px; list-style: none; }
.nav-links a { color: var(--ink-soft); font-size: 0.9rem; font-weight: 500; }
.nav-links a:hover { color: var(--green); text-decoration: none; }
.nav-links a.active { color: var(--green-dark); font-weight: 700; }

.page-header {
  background: linear-gradient(160deg, var(--bg-subtle) 0%, #fff 70%);
  padding: 56px 24px 48px;
  border-bottom: 1px solid var(--border);
}

.page-header-inner { max-width: var(--max-w); margin: 0 auto; }
.back-link { display: inline-block; font-size: 0.85rem; font-weight: 600; color: var(--ink-muted); margin-bottom: 20px; }
.back-link:hover { color: var(--green-dark); text-decoration: none; }
.section-label { display: block; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--green-dark); margin-bottom: 10px; }
.page-header h1 { font-size: clamp(1.8rem, 4vw, 2.4rem); font-weight: 800; margin-bottom: 8px; }
.policy-meta { font-size: 0.85rem; color: var(--ink-muted); }

.toc-wrap { max-width: var(--max-w); margin: 40px auto 0; padding: 0 24px; }
.toc-box { background: var(--bg-subtle); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px 28px; }
.toc-box h2 { font-size: 0.8rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-muted); margin-bottom: 12px; }
.toc-list { columns: 2; column-gap: 32px; list-style: none; padding: 0; }
.toc-list li { margin-bottom: 4px; break-inside: avoid; }
.toc-list a { font-size: 0.875rem; color: var(--ink-soft); }
.toc-list a:hover { color: var(--green-dark); }

.policy-wrap { max-width: var(--max-w); margin: 0 auto; padding: 48px 24px 80px; }
.policy-body h2 { font-size: 1.25rem; font-weight: 700; margin-top: 48px; margin-bottom: 12px; padding-bottom: 6px; border-bottom: 1px solid var(--border); scroll-margin-top: 80px; }
.policy-body h3 { font-size: 1rem; font-weight: 700; margin-top: 24px; margin-bottom: 8px; }
.policy-body p { margin-bottom: 14px; color: var(--ink-soft); font-size: 0.95rem; }
.policy-body ul, .policy-body ol { padding-left: 20px; margin-bottom: 14px; }
.policy-body li { margin-bottom: 6px; color: var(--ink-soft); font-size: 0.95rem; }
.policy-body strong { color: var(--ink); }
.policy-note { background: var(--green-light); border-left: 4px solid var(--green); border-radius: 0 var(--radius) var(--radius) 0; padding: 14px 18px; margin: 20px 0; font-size: 0.9rem; color: var(--green-dark); }

footer { background: var(--ink); color: #aaa; text-align: center; padding: 40px 24px; font-size: 0.85rem; }
footer strong { color: #fff; }
footer a { color: #aaa; }
footer a:hover { color: #fff; }
.footer-logo { display: flex; align-items: center; justify-content: center; gap: 10px; margin-bottom: 12px; }
.footer-logo img { width: 28px; height: 28px; filter: brightness(0) invert(1); opacity: 0.8; }
.footer-links { display: flex; justify-content: center; gap: 20px; margin-bottom: 14px; flex-wrap: wrap; }

@media (max-width: 600px) {
  .nav-links { display: none; }
  .toc-list { columns: 1; }
}