/* ─── Tabs ─── */
.tabs-container { max-width: 860px; margin: 0 auto; }
.tabs-container input[type="radio"] { display: none; }
.tab-labels {
  display: flex; gap: 0; border-bottom: 2px solid var(--sand); margin-bottom: 40px;
}
.tab-label {
  padding: 14px 28px; font-size: 14px; font-weight: 500; letter-spacing: 0.04em;
  color: var(--ash); cursor: pointer; transition: all 0.2s;
  border-bottom: 2.5px solid transparent; margin-bottom: -2px;
  font-family: var(--sans);
}
.tab-label:hover { color: var(--ink); }
.tab-content { display: none; animation: tabFade 0.4s ease; }
@keyframes tabFade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }
#tab-guide:checked ~ .tab-labels label[for="tab-guide"],
#tab-pp:checked ~ .tab-labels label[for="tab-pp"] {
  color: var(--aka); border-bottom-color: var(--aka); font-weight: 700;
}
#tab-guide:checked ~ #content-guide,
#tab-pp:checked ~ #content-pp { display: block; }

/* ─── Guide content ─── */
.guide-section { margin-bottom: 48px; }
.guide-section h3 {
  font-family: var(--serif); font-size: 18px; font-weight: 700; color: var(--ink);
  margin-bottom: 16px; padding-bottom: 8px; border-bottom: 1px solid var(--sand);
}
.guide-section h4 {
  font-size: 15px; font-weight: 700; color: var(--stone); margin: 20px 0 10px;
}
.guide-section p, .guide-section li {
  font-size: 14px; color: var(--stone); line-height: 1.9;
}
.guide-section ul, .guide-section ol {
  padding-left: 24px; margin-bottom: 16px;
}
.guide-section li { margin-bottom: 8px; }
.guide-section li strong { color: var(--ink); }

.device-table {
  display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 16px;
}
.device-card {
  background: var(--washi); border: 1px solid var(--sand); border-radius: 4px; padding: 20px;
}
.device-card h4 {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--aka); margin: 0 0 8px; border: none; padding: 0;
}
.device-card p { font-size: 14px; color: var(--sumi); margin: 0; line-height: 1.6; }
.device-verified { font-family: var(--mono); font-size: 11px; color: var(--ash); letter-spacing: 0.06em; }

.step-list { counter-reset: step; list-style: none; padding: 0; }
.step-item {
  display: grid; grid-template-columns: 36px 1fr; gap: 16px;
  margin-bottom: 28px; padding-bottom: 28px; border-bottom: 1px solid rgba(200,192,184,0.3);
}
.step-item:last-child { border-bottom: none; }
.step-num {
  counter-increment: step; width: 36px; height: 36px; border-radius: 50%;
  background: var(--ink); color: var(--shiro); font-family: var(--mono);
  font-size: 13px; font-weight: 500; display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.step-item h4 {
  font-size: 15px; font-weight: 700; color: var(--ink);
  margin: 0 0 6px; padding: 0; border: none;
}
.step-item p { font-size: 14px; color: var(--stone); line-height: 1.8; margin: 0 0 12px; }
.step-img { border-radius: 6px; border: 1px solid var(--sand); margin-top: 12px; }

.info-box {
  background: var(--washi); border: 1px solid var(--sand); border-radius: 6px;
  padding: 28px; margin-bottom: 48px;
}
.info-box h3 {
  font-family: var(--serif); font-size: 16px; font-weight: 700; color: var(--ink);
  margin: 0 0 12px; padding: 0; border: none;
}
.info-box p { font-size: 14px; color: var(--stone); line-height: 1.9; margin-bottom: 12px; }
.info-box ul { padding-left: 20px; margin: 0; }
.info-box li { font-size: 14px; color: var(--stone); line-height: 1.9; margin-bottom: 12px; }
.info-box li:last-child { margin-bottom: 0; }
.info-box li strong { color: var(--ink); }

.composite-gallery { display: flex; flex-direction: column; gap: 12px; margin-top: 16px; }
.composite-gallery img { border-radius: 6px; border: 1px solid var(--sand); }

/* ─── Privacy content ─── */
.pp-updated {
  font-family: var(--mono); font-size: 12px; color: var(--ash);
  letter-spacing: 0.04em; text-align: right; margin-bottom: 40px;
}
.pp-lang-block { margin-bottom: 56px; }
.pp-lang-title {
  background: var(--ink); color: var(--shiro); font-family: var(--serif);
  font-size: 16px; font-weight: 700; padding: 12px 20px; border-radius: 3px;
  margin-bottom: 28px;
}
.pp-h3 {
  font-family: var(--serif); font-size: 16px; font-weight: 700; color: var(--ink);
  padding-bottom: 6px; border-bottom: 1px solid var(--sand);
  margin: 28px 0 12px;
}
.pp-h4 { font-size: 14px; font-weight: 700; color: var(--stone); margin: 20px 0 8px; }
.pp-text { font-size: 14px; color: var(--stone); line-height: 1.9; margin-bottom: 12px; }
.pp-text strong { color: var(--ink); }
.pp-list { padding-left: 20px; margin-bottom: 16px; }
.pp-list li { font-size: 14px; color: var(--stone); line-height: 1.8; margin-bottom: 6px; }
.pp-list li strong { color: var(--ink); }
.pp-text a, .pp-list a { color: var(--aka); }
.pp-text a:hover, .pp-list a:hover { text-decoration: underline; }

@media (max-width: 600px) {
  .device-table { grid-template-columns: 1fr; }
  .tab-label { padding: 12px 16px; font-size: 13px; }
  .step-item { grid-template-columns: 30px 1fr; gap: 12px; }
  .step-num { width: 30px; height: 30px; font-size: 12px; }
}