/*
 * Trang bai: hai cot, cot trai dinh.
 *
 * Mobile-first. Duoi 1080px cot trai (the san pham + muc luc) nam TREN than
 * bai; tu 1080px tro len no tach sang trai va dinh lai khi cuon.
 */

.fn-doc { display: grid; gap: 28px; align-items: start; }
.fn-page { max-width: 820px; }

.fn-rail { min-width: 0; }
.fn-rail-in { display: grid; gap: 18px; }

/* ---------------------------------------------------------------- */
/* Cot trai: the san pham nho                                        */
/* ---------------------------------------------------------------- */

.fn-rail-card { border: 1px solid var(--line); border-top: 3px solid var(--accent); padding: 16px; }

.fn-rail-kicker {
	margin: 0 0 12px; font-family: var(--display); font-weight: 700; font-size: 11px;
	letter-spacing: .14em; text-transform: uppercase; color: var(--muted);
}

.fn-rail-img {
	width: 100%; max-width: 220px; margin: 0 auto 12px; aspect-ratio: 1 / 1;
	object-fit: contain; background: var(--surface); padding: 10px; mix-blend-mode: multiply;
}

.fn-rail-brand {
	margin: 0 0 3px; font-family: var(--display); font-weight: 700; font-size: 11px;
	letter-spacing: .14em; text-transform: uppercase; color: var(--accent);
}

.fn-rail-title {
	margin: 0 0 10px; font-family: var(--display); font-weight: 600;
	font-size: 14.5px; line-height: 1.35;
}

.fn-rail-score { margin: 0; display: flex; align-items: baseline; gap: 7px; }
.fn-rail-score-n { font-family: var(--display); font-weight: 900; font-size: 26px; line-height: 1; }
.fn-rail-score-l { font-size: 11.5px; color: var(--muted); line-height: 1.3; }

.fn-rail-price { margin: 10px 0 14px; display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.fn-rail-price-n { font-family: var(--display); font-weight: 700; font-size: 20px; }
.fn-rail-price-l { font-size: 11.5px; color: var(--muted); }

/* ---------------------------------------------------------------- */
/* Cot trai: muc luc co danh so                                      */
/* ---------------------------------------------------------------- */

.fn-toc { border: 1px solid var(--line); padding: 16px; }

.fn-toc-kicker {
	margin: 0 0 10px; font-family: var(--display); font-weight: 700; font-size: 11px;
	letter-spacing: .14em; text-transform: uppercase; color: var(--muted);
}

.fn-toc-list { list-style: none; margin: 0; padding: 0; counter-reset: none; }

.fn-toc-i { border-top: 1px solid var(--line); }
.fn-toc-i:first-child { border-top: 0; }

.fn-toc-i a {
	display: grid; grid-template-columns: 26px minmax(0, 1fr); gap: 8px;
	padding: 8px 0; text-decoration: none; align-items: baseline;
}
.fn-toc-i a:hover .fn-toc-t { color: var(--accent); }

.fn-toc-n { font-family: var(--display); font-weight: 700; font-size: 11.5px; color: var(--accent); }
.fn-toc-t { font-size: 13.5px; line-height: 1.4; }

/* ---------------------------------------------------------------- */
/* Than bai                                                          */
/* ---------------------------------------------------------------- */

.fn-article { min-width: 0; }

.fn-title { font-size: clamp(26px, 5.2vw, 40px); letter-spacing: -.015em; margin: 0 0 12px; }

.fn-meta {
	display: flex; flex-wrap: wrap; gap: 8px; align-items: center;
	margin: 0 0 16px; font-size: 13px; color: var(--muted);
}
.fn-meta-cat {
	font-family: var(--display); font-weight: 700; font-size: 11.5px;
	letter-spacing: .12em; text-transform: uppercase; color: var(--accent); text-decoration: none;
}
.fn-meta-sep { color: var(--line); }

.fn-standfirst {
	margin: 0 0 26px; padding: 12px 14px; background: var(--surface);
	border-left: 3px solid var(--ink); font-size: 13.5px; color: var(--muted); line-height: 1.55;
}

.fn-lede { font-size: 1.06em; }
.fn-lede p:last-child { margin-bottom: 0; }

.fn-sec { margin: 34px 0 0; }
.fn-sec:first-child { margin-top: 0; }

.fn-h2 {
	font-size: clamp(20px, 3.2vw, 26px); letter-spacing: -.01em;
	margin: 0 0 12px; padding-top: 12px; border-top: 2px solid var(--ink);
}

.fn-prose p:last-child, .fn-prose ul:last-child, .fn-prose ol:last-child { margin-bottom: 0; }
.fn-prose a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }
.fn-prose--lead { color: var(--muted); }

.fn-body figure { margin: 18px 0; }
.fn-body figure img { width: 100%; background: var(--surface); }
.fn-body figcaption {
	margin-top: 7px; font-size: 12.5px; color: var(--muted);
	border-left: 2px solid var(--line); padding-left: 9px;
}

.fn-body table { width: 100%; border-collapse: collapse; font-size: 14.5px; display: block; overflow-x: auto; }
.fn-body td, .fn-body th { border: 1px solid var(--line); padding: 8px 10px; text-align: left; }

/* ---------------------------------------------------------------- */
/* NUOC DI RIENG: dong thong so gan duoi tieu de muc                 */
/* ---------------------------------------------------------------- */

.fn-note {
	display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 10px;
	margin: -4px 0 16px; padding: 7px 0 8px;
	border-bottom: 1px dashed var(--line);
	font-size: 13px; color: var(--muted);
}

.fn-note-tag {
	font-family: var(--display); font-weight: 700; font-size: 10px;
	letter-spacing: .14em; text-transform: uppercase;
	color: var(--accent); background: var(--accent-soft); padding: 2px 6px;
}

.fn-note-k {
	font-family: var(--display); font-weight: 600; font-size: 12px;
	letter-spacing: .06em; text-transform: uppercase;
}

.fn-note-v { color: var(--ink); font-weight: 500; }

/* ---------------------------------------------------------------- */
/* Muc "at a Glance": anh + so lieu + bang thong so                  */
/* ---------------------------------------------------------------- */

.fn-glance {
	display: grid; gap: 18px; margin-bottom: 20px;
	border: 1px solid var(--line); padding: 18px;
}

.fn-glance-shot { background: var(--surface); padding: 14px; }
.fn-glance-shot figure { margin: 0; }
.fn-glance-shot img { width: 100%; aspect-ratio: 4 / 3; object-fit: contain; mix-blend-mode: multiply; background: transparent; }
.fn-glance-shot figcaption { border-left: 0; padding-left: 0; text-align: center; }

.fn-glance-facts { min-width: 0; }

.fn-facts { margin: 0 0 14px; }
.fn-facts-row {
	display: grid; grid-template-columns: minmax(0, 40%) minmax(0, 60%); gap: 10px;
	padding: 7px 0; border-bottom: 1px solid var(--line);
}
.fn-facts-row:first-child { border-top: 1px solid var(--line); }
.fn-facts dt {
	font-size: 11.5px; letter-spacing: .08em; text-transform: uppercase;
	color: var(--muted); font-weight: 600;
}
.fn-facts dd { margin: 0; font-family: var(--display); font-weight: 600; font-size: 15px; }

.fn-shot-extra figure { margin: 14px 0; }

.fn-sheet { border: 1px solid var(--line); }
.fn-sheet-list { margin: 0; }
.fn-sheet-row {
	display: grid; grid-template-columns: minmax(0, 38%) minmax(0, 62%);
	border-top: 1px solid var(--line);
}
.fn-sheet-row:first-child { border-top: 0; }
.fn-sheet-row:nth-child(odd) { background: var(--surface); }
.fn-sheet dt {
	padding: 9px 12px; font-size: 12.5px; font-weight: 600; letter-spacing: .03em;
	color: var(--muted); border-right: 1px solid var(--line);
}
.fn-sheet dd { margin: 0; padding: 9px 12px; font-size: 14.5px; }

/* ---------------------------------------------------------------- */
/* Hai cot danh sach: uu/nhuoc, nen mua/nen bo qua                   */
/* ---------------------------------------------------------------- */

.fn-cols { display: grid; gap: 16px; }

.fn-col { border: 1px solid var(--line); padding: 14px 16px; }
.fn-col--up { border-top: 3px solid var(--good); }
.fn-col--down { border-top: 3px solid var(--warn); }

.fn-col-h {
	font-size: 13px; letter-spacing: .1em; text-transform: uppercase;
	margin: 0 0 10px; font-weight: 700;
}
.fn-col--up .fn-col-h { color: var(--good); }
.fn-col--down .fn-col-h { color: var(--warn); }

.fn-col ul { margin: 0; padding-left: 18px; font-size: 15px; }
.fn-col li { margin-bottom: 7px; line-height: 1.55; }
.fn-col li:last-child { margin-bottom: 0; }

/* ---------------------------------------------------------------- */
/* Muc "Alternatives"                                                */
/* ---------------------------------------------------------------- */

.fn-alts { display: grid; gap: 18px; }

.fn-alt { display: grid; gap: 14px; border: 1px solid var(--line); padding: 16px; }
.fn-alt-shot { background: var(--surface); padding: 12px; }
.fn-alt-shot figure { margin: 0; }
.fn-alt-shot img { width: 100%; aspect-ratio: 1 / 1; object-fit: contain; mix-blend-mode: multiply; background: transparent; }
.fn-alt-shot figcaption { display: none; }
.fn-alt-body { min-width: 0; }
.fn-alt-h { font-size: 17px; margin: 0 0 10px; }
.fn-alt-body .fn-chips { margin-bottom: 10px; }
.fn-alt-go { margin: 12px 0 0; }

/* ---------------------------------------------------------------- */
/* Muc "Final Verdict"                                               */
/* ---------------------------------------------------------------- */

.fn-verdict { display: grid; gap: 18px; background: var(--surface); border: 1px solid var(--line); padding: 18px; }
.fn-verdict-text p:last-child { margin-bottom: 0; }
.fn-verdict-side { background: var(--bg); border: 1px solid var(--line); padding: 14px; min-width: 0; }

.fn-score { margin-bottom: 12px; }
.fn-score-top { margin: 0; display: flex; align-items: baseline; gap: 5px; }
.fn-score-n { font-family: var(--display); font-weight: 900; font-size: 36px; line-height: 1; }
.fn-score-d { font-family: var(--display); font-weight: 600; font-size: 15px; color: var(--muted); }
.fn-score-w {
	margin: 0; font-family: var(--display); font-weight: 700; font-size: 13px;
	letter-spacing: .06em; text-transform: uppercase; color: var(--accent);
}
.fn-score-src { margin: 6px 0 0; font-size: 11.5px; color: var(--muted); line-height: 1.5; }

.fn-facts-go, .fn-verdict-go { margin: 0; }
.fn-verdict-price { margin: 0 0 12px; }
.fn-verdict-price-n { display: block; font-family: var(--display); font-weight: 700; font-size: 22px; }
.fn-verdict-price-l { display: block; font-size: 11.5px; color: var(--muted); }

/* ---------------------------------------------------------------- */
/* FAQ                                                               */
/* ---------------------------------------------------------------- */

.fn-faq { border-top: 1px solid var(--line); }

.fn-faq-i { border-bottom: 1px solid var(--line); }

.fn-faq-i summary {
	cursor: pointer; list-style: none; padding: 13px 34px 13px 0; position: relative;
	font-family: var(--display); font-weight: 600; font-size: 16px; line-height: 1.4;
}
.fn-faq-i summary::-webkit-details-marker { display: none; }
.fn-faq-i summary::after {
	content: "+"; position: absolute; right: 6px; top: 11px;
	font-family: var(--display); font-weight: 700; font-size: 20px; color: var(--accent);
}
.fn-faq-i[open] summary::after { content: "\2212"; }
.fn-faq-i summary:hover { color: var(--accent); }

.fn-faq-a { padding: 0 0 14px; font-size: 15.5px; }
.fn-faq-a p:last-child { margin-bottom: 0; }

/* ---------------------------------------------------------------- */
/* Khoi "doc them"                                                   */
/* ---------------------------------------------------------------- */

.fn-more { margin-top: 44px; }

/* ---------------------------------------------------------------- */
/* Man hinh rong                                                     */
/* ---------------------------------------------------------------- */

@media (min-width: 680px) {
	.fn-glance { grid-template-columns: minmax(0, 260px) minmax(0, 1fr); align-items: start; }
	.fn-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
	.fn-alt { grid-template-columns: 168px minmax(0, 1fr); align-items: start; }
	.fn-verdict { grid-template-columns: minmax(0, 1fr) 250px; }
}

@media (min-width: 1080px) {
	.fn-doc { grid-template-columns: 300px minmax(0, 1fr); gap: 48px; }
	.fn-rail-in { position: sticky; top: 20px; max-height: calc(100vh - 40px); overflow-y: auto; }
	.fn-article { max-width: 760px; }
}