/* Guides (9 Oct 2026): long-form articles for parents at /guides/.
   Loaded after type.css, site.css and refresh.css, so it only adds article layout. */

.guide-hero{padding-block:56px 32px;background:var(--panel)}
.guide-hero .crumbs{font-size:var(--fs-sm);color:var(--ink-2);margin-bottom:14px}
.guide-hero .crumbs a{color:var(--link)}
#main .guide-hero h1{font-size:clamp(30px,4.2vw,46px);line-height:1.1;letter-spacing:-.5px;max-width:20em}
.guide-hero .dek{font-size:var(--fs-lg);color:var(--ink-2);margin-top:16px;max-width:40em;line-height:1.55}
.guide-hero .meta{font-size:var(--fs-sm);color:var(--ink-3);margin-top:18px}

.guide-wrap{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:56px;padding-block:48px 24px}
.guide-body{max-width:44em;font-size:18px;line-height:1.7;color:var(--ink)}
#main .guide-body h2{font-size:clamp(24px,2.6vw,30px);line-height:1.2;margin:48px 0 14px;letter-spacing:-.3px}
#main .guide-body h3{font-size:20px;line-height:1.3;margin:32px 0 10px}
.guide-body p{margin:0 0 18px}
.guide-body ul,.guide-body ol{margin:0 0 20px;padding-left:1.3em}
.guide-body li{margin-bottom:8px}
.guide-body a:not(.btn){color:var(--link);text-underline-offset:3px}
.guide-body sup{line-height:0}
.guide-body sup a{text-decoration:none;font-size:.72em;font-weight:var(--fw-semibold);padding:0 2px}
.guide-body blockquote{margin:0 0 20px;padding:16px 20px;background:var(--panel);border-radius:16px;font-size:17px}
.guide-body blockquote p:last-child{margin:0}
.guide-body .tbl{overflow-x:auto;margin:0 0 24px;border:1px solid var(--line);border-radius:16px}
.guide-body table{border-collapse:collapse;width:100%;font-size:16px;line-height:1.45}
.guide-body th,.guide-body td{text-align:left;padding:10px 14px;border-bottom:1px solid var(--line);vertical-align:top}
.guide-body thead th{background:var(--panel);font-weight:var(--fw-semibold)}
.guide-body tr:last-child td,.guide-body tr:last-child th{border-bottom:0}
.guide-body .note{background:var(--maths-soft);border-radius:16px;padding:16px 20px;font-size:17px;margin:0 0 22px}
.guide-body .note b{color:var(--maths-soft-ink)}
.guide-body .sc{background:var(--panel);border-radius:24px;padding:24px 26px;margin:36px 0 8px}
#main .guide-body .sc h2{margin-top:0}
.guide-body .sc .btn{margin-top:6px;text-decoration:none}

/* Practice questions (10 Oct 2026): a question card with a tap-to-reveal answer. */
.guide-body .pq{background:var(--panel);border-radius:20px;padding:18px 22px 6px;margin:0 0 18px}
.guide-body .pq-n{font-size:var(--fs-sm);font-weight:var(--fw-semibold);color:var(--maths-soft-ink);margin:0 0 6px}
.guide-body .pq-o{margin:0 0 14px}
.guide-body .pq details{border-top:1px solid var(--line);padding:4px 0 10px}
.guide-body .pq summary{cursor:pointer;font-weight:var(--fw-semibold);color:var(--link);min-height:44px;display:flex;align-items:center}
.guide-body .pq details p{margin:4px 0 8px}

.refs{margin-top:48px;padding-top:24px;border-top:1px solid var(--line);font-size:15px;line-height:1.55;color:var(--ink-2)}
#main .refs h2{font-size:20px;margin:0 0 12px}
.refs ol{padding-left:1.4em}
.refs li{margin-bottom:10px;scroll-margin-top:90px}
.refs a{color:var(--link);word-break:break-word}

.guide-side{position:sticky;top:96px;align-self:start;display:grid;gap:16px}
.guide-side .card{background:var(--panel);border-radius:20px;padding:20px 22px;font-size:15px;line-height:1.55}
#main .guide-side .card h2{font-size:16px;margin:0 0 10px}
.guide-side .card ul{margin:0;padding-left:1.1em}
.guide-side .card li{margin-bottom:6px}
.guide-side .card a:not(.btn){color:var(--link)}
.guide-side .card .btn{margin-top:12px;width:100%;justify-content:center;text-decoration:none}

.guide-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;padding-block:48px}
.guide-list a.g{display:block;background:var(--panel);border-radius:24px;padding:26px 28px;text-decoration:none;color:var(--ink);transition:background-color .15s}
.guide-list a.g:hover{background:var(--panel-2)}
.guide-list .tag{display:inline-block;font-size:var(--fs-sm);font-weight:var(--fw-semibold);color:var(--maths-soft-ink);background:#fff;border-radius:8px;padding:3px 10px;margin-bottom:12px}
#main .guide-list h2{font-size:22px;line-height:1.25;margin:0 0 8px}
.guide-list p{color:var(--ink-2);font-size:16px;line-height:1.55;margin:0}
.guide-list .more{display:inline-block;margin-top:14px;color:var(--link);font-weight:var(--fw-semibold);font-size:15px}

@media (max-width:900px){
  .guide-wrap{grid-template-columns:minmax(0,1fr);gap:32px}
  .guide-side{position:static}
  .guide-list{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:640px){
  .guide-hero{padding-block:36px 24px}
  .guide-body{font-size:17px}
}