:root{
  --bg: #2e2e2e;
  --surface: #383838;
  --line: rgba(255,255,255,.12);
  --text: #ffffff;
  --muted: rgba(255,255,255,.6);
  --accent: #a6e22e;
  --accent2: #82b224;
  --accent-soft: #c3e88d;
}

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

body{
  font-family: "Noto Sans JP", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.wrap{ max-width: 1080px; margin: 0 auto; padding: 40px 24px 64px; }

.page-layout{
  display: flex;
  align-items: flex-start;
  gap: 40px;
}

.side-nav{
  position: sticky;
  top: 24px;
  flex: 0 0 200px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.side-nav-group{ display: flex; flex-direction: column; gap: 4px; }

.side-nav-title{
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .05em;
  color: var(--muted);
  margin-bottom: 4px;
  text-transform: uppercase;
}

.side-nav a{
  font-size: 12.5px;
  color: var(--accent-soft);
  text-decoration: none;
  padding: 6px 10px;
  border-radius: 8px;
  border: 1px solid transparent;
  line-height: 1.4;
  transition: background .15s, border-color .15s;
}
.side-nav a:hover{
  background: rgba(166,226,46,.12);
  border-color: rgba(166,226,46,.4);
}

.faq-content{ flex: 1; min-width: 0; }

.page-header{
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.calc-link{
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(166,226,46,.2);
  border: 1px solid rgba(166,226,46,.5);
  color: var(--accent-soft);
  text-decoration: none;
  font-family: "Noto Sans JP", sans-serif;
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  transition: background .15s;
}
.calc-link:hover{ background: rgba(166,226,46,.4); color: #fff; }

h1{
  font-family: "Saira Stencil One", sans-serif;
  font-size: 22px;
  letter-spacing: .03em;
  margin-bottom: 8px;
}

.lead{
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.8;
  margin-bottom: 32px;
}

.faq-category{ margin-bottom: 32px; scroll-margin-top: 24px; }
.faq-category h2{
  font-family: "Saira Stencil One", sans-serif;
  font-size: 16px;
  letter-spacing: .03em;
  color: var(--accent-soft);
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}
.faq-category dt{
  font-weight: 700;
  font-size: 13.5px;
  margin-top: 16px;
}
.faq-category dt:first-of-type{ margin-top: 0; }
.faq-category dd{
  margin-top: 4px;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.8;
}

.contact-box{
  margin-top: 40px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 32px;
  text-align: center;
}
.contact-box-top{
  margin-top: 16px;
  margin-bottom: 32px;
}
.contact-box p{
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.8;
  margin-bottom: 20px;
}
.contact-box .checklist{
  text-align: left;
  max-width: 420px;
  margin: 0 auto 24px;
  font-size: 12.5px;
  color: var(--muted);
  line-height: 1.9;
}
.contact-methods{
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 340px;
  margin: 0 auto;
}
.contact-method{
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #1a1a1a;
  text-decoration: none;
  font-weight: 700;
  font-size: 13.5px;
  transition: opacity .15s;
}
.contact-method:hover{ opacity: .9; }
.contact-icon{ width: 20px; height: 20px; flex-shrink: 0; color: #1a1a1a; }

@media (max-width: 860px){
  .page-layout{ flex-direction: column; gap: 20px; }
  .side-nav{
    position: sticky;
    top: 0;
    z-index: 5;
    flex: none;
    flex-direction: row;
    flex-wrap: nowrap;
    gap: 8px;
    overflow-x: auto;
    padding: 10px 0;
    background: var(--bg);
    -webkit-overflow-scrolling: touch;
  }
  .side-nav-group{ flex-direction: row; flex-shrink: 0; gap: 8px; }
  .side-nav-title{ display: none; }
  .side-nav a{
    white-space: nowrap;
    background: rgba(166,226,46,.1);
    border-color: rgba(166,226,46,.3);
  }
}

@media (max-width: 600px){
  .wrap{ padding: 32px 16px 48px; }
  h1{ font-size: 18px; }
}

.header-logo{ height: 36px; width: auto; display: block; }