/* Grade 3 additions (Overview chat, 2026-10-29) */
.age-badge{display:inline-block;margin:0 0 18px;padding:7px 15px;border:1px solid #b08d4a99;border-radius:999px;color:var(--teal,#1d4a5c);font-weight:600;font-size:14px;letter-spacing:.02em;background:#fffdf8}
.grading-table tbody th{background:transparent;color:inherit;font-weight:400;padding:10px 17px;border-bottom:1px solid var(--line,#ddd3bd);text-align:left}
.age-line{margin:2px 0 14px;font:600 15px/1.4 var(--sans,inherit);color:var(--teal,#1d4a5c);letter-spacing:.01em}
.format-grid.four{grid-template-columns:repeat(4,1fr)}
@media (max-width:1100px){.format-grid.four{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.format-grid.four{grid-template-columns:1fr}}
.six-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:8px}
.six-grid article{background:#fffdf8;border:1px solid var(--line,#ddd3bd);padding:22px 22px 20px}
.six-grid h3{margin:6px 0 6px;font-size:20px}
.six-grid p{margin:0;color:var(--muted,#555);font-size:15px}
@media (max-width:850px){.six-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:520px){.six-grid{grid-template-columns:1fr}}
.week-day .day-lessons{font-size:13px;color:var(--muted,#5a625c);margin-top:8px;border-top:1px solid var(--line,#ddd3bd);padding-top:8px}
.volume-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.volume-list li{border:1px solid var(--line,#ddd3bd);background:#fffdf8;padding:12px 14px}
.volume-list strong{display:block;font:19px var(--serif,serif);color:var(--teal,#1d4a5c);white-space:nowrap}
.volume-head{margin:0 0 12px}
.volume-list span{font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:#6b6250}
@media (max-width:640px){.volume-list{grid-template-columns:repeat(2,1fr)}}
.edition-guide-points.four{grid-template-columns:repeat(2,1fr);row-gap:16px}
@media (max-width:760px){.edition-guide-points.four{grid-template-columns:1fr;row-gap:12px}}

/* Social media row in the footer (2026-11-03) */
.footer-social{margin-top:34px;padding-top:24px;border-top:1px solid #dfd7c7;display:flex;align-items:center;gap:22px;flex-wrap:wrap}
.footer-social h3{font-family:var(--sans);font-size:10px;font-weight:600;letter-spacing:.15em;text-transform:uppercase;color:#785a2c;margin:0}
.social-buttons{display:flex;gap:12px;flex-wrap:wrap}
.social-button{display:inline-flex;align-items:center;gap:8px;min-height:40px;padding:8px 16px;border:1px solid var(--teal);border-radius:3px;background:var(--teal);font-size:12px;font-weight:700;letter-spacing:.025em;color:#fff;text-decoration:none;transition:background .2s}
a.social-button:hover{background:#1a4b5b;color:#fff}
.social-button.is-pending{background:#fffdf8;border-color:#dfd7c7;color:#4b646a;cursor:default}
.social-button small{font-size:10px;font-weight:400;color:#5e6a66}
@media (max-width:640px){.footer-social{display:block}.footer-social h3{margin-bottom:14px}.social-button{flex:1 1 30%;justify-content:center;flex-direction:column;gap:2px}}

/* Back-to-top button (2026-11-03) */
.to-top{position:fixed;right:22px;bottom:22px;z-index:50;display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 16px;border-radius:3px;background:var(--teal);color:#fff;font-size:13px;font-weight:700;letter-spacing:.03em;text-decoration:none;box-shadow:0 8px 24px #071d2c33;transition:opacity .2s,transform .2s,background .2s}
.to-top:hover{background:#1a4b5b;color:#fff}
.to-top:focus-visible{outline:3px solid #d7b875;outline-offset:2px}
.js .to-top{opacity:0;pointer-events:none;transform:translateY(8px)}
.js .to-top.is-visible{opacity:1;pointer-events:auto;transform:none}
@media (max-width:640px){.to-top{right:14px;bottom:14px;min-height:42px;padding:9px 14px}}
@media print{.to-top{display:none}}
.site-footer{padding-bottom:84px}
@media (max-width:640px){.site-footer{padding-bottom:76px}}