/* Trang đề thi (28/10/2026): bỏ màn "Chọn chế độ" - hàng nút Luyện thi / Thi thử / PDF, hộp đăng nhập, phạm vi kiến thức. */
.xd-desc{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}

/* Hàng nút */
.xd-actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr)) auto;gap:10px;align-items:stretch;max-width:980px;margin:0 auto}
.xd-act{display:flex;flex-direction:column;justify-content:center;gap:2px;padding:12px 16px;border-radius:12px;border:1px solid var(--dz-accline,#8fb4da);background:#fff;color:var(--dz-acc,#123a63);text-decoration:none;transition:background .15s,box-shadow .15s}
.xd-act b{font-size:17px;line-height:1.25}
.xd-act small{font-size:13.5px;line-height:1.35;opacity:.9}
.xd-act.is-primary{background:var(--dz-acc,#123a63);border-color:var(--dz-acc,#123a63);color:#fff}
.xd-act.is-primary:hover{background:var(--dz-deep,#0b2744)}
.xd-act.is-navy{background:var(--dz-accsoft,#eaf3fc)}
.xd-act.is-navy:hover{background:#dcebfa}
.xd-act:focus-visible,.xd-btn:focus-visible{outline:2px solid #c9a05a;outline-offset:2px}
.xd-act-side{display:flex;flex-direction:column;gap:6px;justify-content:center}
.xd-act-side .cvc-pdf-btn{justify-content:center}
.xd-act-note{grid-column:1/-1;margin:0;font-size:13.5px;color:var(--dz-amber-ink,#814d00)}
.xd-alert{max-width:980px;margin:0 auto;padding:10px 12px;border:1px solid #f0c98a;background:#fff8ea;color:#5b3a06;font-size:14.5px}
.xd-alert.is-error{border-color:#e7a7a1;background:#fff3f2;color:var(--dz-red-ink,#ac2217);font-weight:bold}
.xd-alert a{font-weight:bold;text-decoration:underline;color:inherit}

/* Bố cục */
.xd-grid{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:20px;align-items:start}
.xd-main,.xd-side{display:grid;gap:14px;min-width:0}
.xd-scope h2,.xd-how h2{margin:0 0 10px;font-size:18px;font-weight:bold;color:var(--dz-ink,#111)}
.xd-sec+.xd-sec{margin-top:12px;padding-top:12px;border-top:1px solid var(--dz-line2,#e8e8e8)}
.xd-sec h3{margin:0 0 7px;font-size:15.5px;font-weight:bold;color:var(--dz-acc,#123a63);display:flex;justify-content:space-between;gap:10px}
.xd-sec h3 span{flex:none;font-size:13px;padding:1px 8px;border-radius:99px;background:var(--dz-accsoft,#eaf3fc)}
.xd-docs{display:flex;flex-wrap:wrap;gap:6px;margin:0}
.xd-doc{display:inline-flex;align-items:baseline;gap:5px;padding:4px 10px;border:1px solid var(--dz-line,#d4d4d4);border-radius:99px;background:#fff;font-size:13.5px;color:var(--dz-ink2,#333);text-decoration:none}
a.xd-doc:hover{border-color:var(--dz-accline,#8fb4da);background:var(--dz-accsoft,#eaf3fc);color:var(--dz-acc,#123a63)}
.xd-doc small{font-size:11.5px;color:#5a5a5a}
.xd-muted{margin:10px 0 0;font-size:13px;color:#555}
.xd-how ul{margin:0;padding-left:20px;display:grid;gap:5px;font-size:14.5px;color:var(--dz-ink2,#333)}
.xd-specs dl{margin:0;display:grid}
.xd-specs dl div{display:flex;justify-content:space-between;gap:10px;padding:6px 0;border-bottom:1px solid var(--dz-line2,#e8e8e8);font-size:14px}
.xd-specs dl div:last-child{border:0}
.xd-specs dt{color:#555}.xd-specs dd{margin:0;font-weight:bold;text-align:right;color:var(--dz-ink,#111)}
.xd-rec a{font-weight:bold;color:var(--dz-acc,#123a63);line-height:1.35}
.xd-rec p{margin:6px 0;font-size:14px}
.xd-rec .xd-link{display:inline-block;margin-top:4px;font-size:14px;color:var(--dz-acc2-ink,#145b97)}

/* Hộp đăng nhập (đến từ Luyện thi / Thi thử, chưa đăng nhập) */
.xd-gate{--au-line:#d5dbe2;--au-gold:#c9a052;--au-ink:#1d2733;--au-muted:#56606d;max-width:520px;margin:0 auto;padding:24px 22px;border:1px solid #e1d6bd;border-radius:18px;background:linear-gradient(180deg,#fffdf7,#fbf6ea);text-align:center;box-shadow:0 10px 30px rgba(15,42,74,.06)}
.xd-chip{display:inline-block;padding:3px 12px;border-radius:99px;font-size:13.5px;font-weight:bold;background:var(--dz-accsoft,#eaf3fc);color:var(--dz-acc,#123a63)}
.xd-chip.is-on-tap{background:#e5f1ec;color:#20635a}
.xd-gate h2{margin:10px 0 6px;font-size:21px;line-height:1.3;color:var(--dz-acc,#123a63);text-wrap:balance}
.xd-gate-sub{margin:0 0 16px;font-size:15px;color:#3c4a5b}
.xd-gate-google .au-or{margin:14px 0 4px}
.xd-gate-links{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:8px}
.xd-btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 16px;border:1px solid #cdd5de;border-radius:12px;background:#fff;color:var(--dz-acc,#123a63);font-weight:bold;font-size:15px;text-decoration:none}
.xd-btn.is-primary{background:var(--dz-acc,#123a63);border-color:var(--dz-acc,#123a63);color:#fff}
.xd-gate-note{margin:14px 0 6px;font-size:13.5px;color:var(--au-muted)}
.xd-gate-back{font-size:14px;color:var(--dz-acc2-ink,#145b97)}

/* Thanh dính đáy trên điện thoại */
.xd-sticky{display:none}
@media(max-width:1023px){
	.xd-grid{grid-template-columns:minmax(0,1fr)}
	.xd-sticky{display:grid;grid-template-columns:1fr 1fr;gap:8px;position:fixed;left:0;right:0;bottom:0;z-index:70;padding:8px 12px calc(8px + env(safe-area-inset-bottom,0px));background:rgba(255,255,255,.96);border-top:1px solid var(--dz-line,#d4d4d4);box-shadow:0 -6px 18px rgba(15,42,74,.08)}
	.xd-sticky .xd-act{padding:10px 12px;align-items:center}
	.xd-sticky .xd-act b{font-size:16px}
	body.xd-has-sticky{padding-bottom:72px}
	body.xd-has-sticky .aic-launcher{bottom:calc(76px + env(safe-area-inset-bottom,0px))}
}
@media(max-width:720px){
	.xd-actions{grid-template-columns:1fr 1fr}
	.xd-act-side{grid-column:1/-1;flex-direction:row;flex-wrap:wrap;justify-content:center}
	.xd-act b{font-size:16px}.xd-act small{font-size:12.5px}
	.xd-gate{padding:18px 14px}.xd-gate h2{font-size:19px}
}
@media(max-width:380px){.xd-actions{grid-template-columns:1fr}}
@media print{.xd-sticky,.xd-actions{display:none}}
@media(prefers-reduced-motion:reduce){.xd-act{transition:none}}