/* qq88-edu-home — scoped styles for the educational front page only */
.qqedu{--ink:#1d2a33;--muted:#52616b;--line:#dbe3e8;--soft:#f3f6f8;--accent:#1f6f78;--accent-ink:#ffffff;--warn:#8a5a00;--warn-bg:#fff6e0;
  color:var(--ink);font-size:17px;line-height:1.7;max-width:880px;margin:0 auto;padding:24px 16px 56px}
.qqedu h1,.qqedu h2,.qqedu h3{color:var(--ink);line-height:1.3;letter-spacing:0;text-transform:none}
.qqedu h1{font-size:clamp(28px,4.2vw,40px);margin:8px 0 16px}
.qqedu h2{font-size:clamp(22px,3vw,28px);margin:0 0 14px}
.qqedu h3{font-size:19px;margin:22px 0 8px}
.qqedu p{margin:0 0 14px}
.qqedu a{color:var(--accent);text-decoration:underline;text-underline-offset:2px}
.qqedu-kicker{font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--accent);margin:0}
.qqedu-lead{font-size:19px;color:var(--muted)}
.qqedu-notice{background:var(--warn-bg);border-left:4px solid #c98a00;color:#4a3a10;padding:14px 16px;border-radius:6px;margin:18px 0;font-size:15.5px}
.qqedu-toc{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0 4px}
.qqedu-toc a{display:inline-block;padding:7px 14px;border:1px solid var(--line);border-radius:999px;text-decoration:none;color:var(--ink);background:#fff;font-size:15px}
.qqedu-toc a:hover,.qqedu-toc a:focus{border-color:var(--accent);color:var(--accent)}
.qqedu-sec{border-top:1px solid var(--line);padding:36px 0 8px;scroll-margin-top:110px}
.qqedu-hero{padding-bottom:24px;scroll-margin-top:110px}
.qqedu-num{font-size:14px;font-weight:700;color:var(--accent);margin:0 0 4px;font-variant-numeric:tabular-nums}
.qqedu-formula{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:var(--soft);padding:12px 14px;border-radius:6px;font-size:15.5px;overflow-x:auto}
.qqedu-example{background:var(--soft);border:1px solid var(--line);border-radius:8px;padding:14px 16px;margin:14px 0 18px}
.qqedu-example ul{margin:6px 0 0 18px}
.qqedu-list,.qqedu-checklist,.qqedu-refs{margin:0 0 16px 20px;padding:0}
.qqedu-list li,.qqedu-checklist li,.qqedu-refs li{margin:0 0 10px}
.qqedu-checklist{list-style:none;margin-left:0}
.qqedu-checklist li{position:relative;padding-left:28px}
.qqedu-checklist li:before{content:"✓";position:absolute;left:4px;top:0;color:var(--accent);font-weight:700}
.qqedu-table-wrap{overflow-x:auto;margin:6px 0 18px}
.qqedu-table{width:100%;border-collapse:collapse;font-size:15.5px;min-width:480px}
.qqedu-table caption{text-align:left;color:var(--muted);font-size:14px;padding-bottom:6px}
.qqedu-table th,.qqedu-table td{border:1px solid var(--line);padding:9px 10px;text-align:left;vertical-align:top}
.qqedu-table thead th{background:var(--soft)}
.qqedu-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;margin:12px 0 18px}
.qqedu-card{border:1px solid var(--line);border-radius:8px;padding:14px 16px;background:#fff}
.qqedu-card h3{margin:0 0 6px;font-size:17px}
.qqedu-card p{margin:0;font-size:15.5px;color:var(--muted)}
.qqedu-disclaimer,.qqedu-note,.qqedu-updated{font-size:14.5px;color:var(--muted)}
.qqedu-disclaimer{background:var(--soft);padding:10px 12px;border-radius:6px}
.qqedu-summary ol{counter-reset:none}
.qqedu-sources{font-size:15px}

/* Neutral header/footer replacements (front page only) */
.qqedu-topnote{font-size:13px;color:#e8f1f2;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.qqedu-footer{background:#1d2a33;color:#d7e0e5;padding:32px 16px;font-size:14.5px;line-height:1.6}
.qqedu-footer .qqedu-footer-in{max-width:880px;margin:0 auto}
.qqedu-footer a{color:#ffffff}
.qqedu-footer p{margin:0 0 8px}
@media (max-width:549px){.qqedu{font-size:16px}.qqedu-lead{font-size:17px}.qqedu-sec{padding-top:28px}}
/* Text logo (front page only – stylesheet is enqueued only when the plugin is active) */
#logo a{color:#ffffff;text-transform:none;white-space:nowrap;font-weight:700;font-size:20px;letter-spacing:0;line-height:1.2}
#logo a:hover{color:#e8f1f2}
.header-wrapper:not(.stuck) #logo a, .stuck #logo a{color:#ffffff}
@media (max-width:849px){#logo a{font-size:17px}}
/* Mobile header: the HTML element sits on the white bottom bar */
.mobile-nav .qqedu-topnote,.header-bottom .qqedu-topnote,.off-canvas .qqedu-topnote{color:#1f6f78}
@media (max-width:549px){.qqedu{padding-left:18px!important;padding-right:18px!important}}
/* Sticky header: stronger, guaranteed contrast for the text logo (front page only) */
.header-wrapper.stuck .header-main .header-bg-color,.header-wrapper.stuck .header-main{background-color:#00521a!important}
.header-wrapper.stuck #logo a{color:#ffffff!important;font-size:21px;text-shadow:0 1px 1px rgba(0,0,0,.35)}
#logo a:focus-visible{outline:2px solid #ffffff;outline-offset:3px}