/* VIETTA 2026-10-03 — CSS riêng cho 2 khung trang nội dung mới:
     templates/page.gioi-thieu.bwt        (bản chốt "Giới thiệu VIETTA")
     templates/page.bao-hanh-ho-tro.bwt   (bản chốt "Bảo hành - Hỗ trợ")
   Tiền tố .vtn- (Vietta Trang Nội dung). File MỚI, không sửa CSS dùng chung.
   Token: --primary-color, --text-color, --text-secondary-color, --border-color (layouts/theme.bwt). Bám DESIGN.md:
   nút 48px bo 10px, card bo 12px + bóng nhẹ, nền trắng, nền xen kẽ #f5f7f6, tiêu đề H2 vạch đỏ bên trái (như trang Kiến thức). */

.vtn { color: var(--text-color, #282828); padding-bottom: 20px; }

/* ---------- Hero ---------- */
.vtn-hero {
	display: grid;
	grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
	gap: 40px;
	align-items: center;
	padding: 6px 0 34px;
}
.vtn-hero--solo { grid-template-columns: minmax(0, 1fr); }
.vtn-eyebrow { margin: 0 0 8px; color: var(--primary-color); font-weight: 700; letter-spacing: .3px; }
.vtn-hero .title_page { margin: 0 0 14px; }
.vtn-hero .title_page::after { margin-left: 0; margin-right: 0; }
.vtn-lead { margin: 0 0 12px; line-height: 1.75; color: var(--text-secondary-color, #666); font-size: 1.05rem; max-width: 760px; }
.vtn-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 20px; }
.vtn-hero__img { margin: 0; }
.vtn-hero__img img {
	display: block;
	width: 100%;
	height: auto;
	aspect-ratio: 4 / 3;
	object-fit: cover;
	border-radius: 16px;
	box-shadow: 0 8px 24px rgba(0, 0, 0, .10);
}

/* ---------- Nút ---------- */
.vtn-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 8px;
	min-height: 48px;
	padding: 0 24px;
	border-radius: 10px;
	border: 1px solid var(--primary-color);
	font-size: 15px;
	font-weight: 600;
	line-height: 1.2;
	text-align: center;
	text-decoration: none !important;
	cursor: pointer;
	transition: background-color .16s ease, border-color .16s ease, transform .16s ease;
}
.vtn-btn--solid { background: var(--primary-color); color: #fff !important; }
.vtn-btn--solid:hover { background: #b01030; border-color: #b01030; transform: translateY(-1px); }
.vtn-btn--outline { background: #fff; color: var(--primary-color) !important; }
.vtn-btn--outline:hover { background: #fef2f2; transform: translateY(-1px); }

/* ---------- Khối nội dung ---------- */
.vtn-sec { padding: 30px 0; border-top: 1px solid var(--border-color, #f1f1f1); }
.vtn-h2 {
	margin: 0 0 14px;
	padding-left: 12px;
	border-left: 4px solid var(--primary-color);
	font-size: 1.35rem;
	font-weight: 800;
	line-height: 1.3;
	color: var(--text-color, #282828);
	text-transform: none;
}
.vtn-p { margin: 0 0 12px; line-height: 1.75; max-width: 880px; }
.vtn-p a, .vtn-table a, .vtn-list a { color: var(--primary-color); text-decoration: underline; text-underline-offset: 2px; }
.vtn-sub { margin: 18px 0 8px; font-weight: 700; }
.vtn-list { margin: 0 0 12px; padding-left: 1.3em; line-height: 1.85; max-width: 880px; }
.vtn-more { margin: 14px 0 0; }
.vtn-more a { font-weight: 600; color: var(--primary-color); text-decoration: none; }
.vtn-more a:hover { text-decoration: underline; }

/* ---------- Bảng 2 cột (pháp nhân, thông tin công khai, liên hệ) ---------- */
.vtn-table {
	width: 100%;
	border-collapse: separate;
	border-spacing: 0;
	border: 1px solid #ececec;
	border-radius: 12px;
	overflow: hidden;
	margin: 6px 0 10px;
}
.vtn-table th, .vtn-table td { padding: 13px 18px; text-align: left; vertical-align: top; border-bottom: 1px solid #f0f0f0; line-height: 1.6; }
.vtn-table tr:last-child th, .vtn-table tr:last-child td { border-bottom: 0; }
.vtn-table th { width: 30%; font-weight: 600; background: #faf7f8; }

/* ---------- Card (3 cột) ---------- */
.vtn-cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; list-style: none; margin: 8px 0 0; padding: 0; }
.vtn-card {
	display: flex;
	flex-direction: column;
	gap: 8px;
	background: #fff;
	border: 1px solid #ececec;
	border-radius: 12px;
	padding: 20px 20px 18px;
	box-shadow: 0 4px 18px rgba(0, 0, 0, .04);
}
.vtn-card__title { margin: 0; font-size: 1.1rem; font-weight: 700; line-height: 1.35; }
.vtn-card__title a { color: var(--text-color, #282828); text-decoration: none; }
.vtn-card__title a:hover { color: var(--primary-color); }
.vtn-card__text { margin: 0; line-height: 1.7; color: #555; }

/* ---------- Các bước đánh số ---------- */
.vtn-steps { counter-reset: vtn-step; list-style: none; margin: 8px 0 0; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.vtn-step { position: relative; background: #f5f7f6; border-radius: 12px; padding: 58px 18px 18px; }
.vtn-step::before {
	counter-increment: vtn-step;
	content: counter(vtn-step);
	position: absolute;
	top: 16px;
	left: 18px;
	width: 30px;
	height: 30px;
	border-radius: 50%;
	background: var(--primary-color);
	color: #fff;
	font-weight: 700;
	display: flex;
	align-items: center;
	justify-content: center;
}
.vtn-step__title { margin: 0 0 6px; font-size: 1.02rem; font-weight: 700; line-height: 1.35; }
.vtn-step__text { margin: 0; line-height: 1.7; color: #555; }
/* Danh sách bước dọc (quy trình bảo hành 5 bước): tiêu đề là chữ "Bước n" nên không vẽ thêm huy hiệu số */
.vtn-steps--col { grid-template-columns: minmax(0, 1fr); max-width: 880px; gap: 12px; }
.vtn-steps--col .vtn-step { padding: 16px 20px; border-left: 4px solid var(--primary-color); border-radius: 8px 12px 12px 8px; }
.vtn-steps--col .vtn-step::before { display: none; }
.vtn-steps--col .vtn-step__title { margin: 0 0 4px; color: var(--primary-color); }

/* ---------- 4 thẻ thời hạn bảo hành (một bộ DOM duy nhất, CSS grid responsive) ---------- */
.vtn-warr { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; list-style: none; margin: 18px 0 0; padding: 0; }
.vtn-warr__card {
	display: flex;
	flex-direction: column;
	align-items: center;
	text-align: center;
	gap: 6px;
	background: #fff7f8;
	border: 1px solid #f0d5db;
	border-radius: 12px;
	padding: 22px 14px;
}
.vtn-warr__label { font-weight: 600; line-height: 1.35; }
.vtn-warr__value { font-size: 2rem; line-height: 1.1; font-weight: 800; color: var(--primary-color); }

/* ---------- FAQ (hiển thị sẵn, không accordion) ---------- */
.vtn-faq { max-width: 880px; }
.vtn-faq__item { padding: 16px 0; border-top: 1px solid #eee; }
.vtn-faq__item:first-child { border-top: 0; padding-top: 4px; }
.vtn-faq__q { margin: 0 0 6px; font-size: 1.05rem; font-weight: 700; line-height: 1.4; }
.vtn-faq__a { margin: 0; line-height: 1.75; color: #555; }

/* ---------- Khối liên hệ cuối trang ---------- */
.vtn-contact { background: #f5f7f6; border-radius: 16px; padding: 28px 24px; }
.vtn-contact .vtn-h2 { margin-bottom: 10px; }

/* ---------- Responsive ---------- */
@media (max-width: 991px) {
	.vtn-hero { grid-template-columns: minmax(0, 1fr); gap: 22px; }
	.vtn-hero__img { order: -1; }
	.vtn-cards { grid-template-columns: minmax(0, 1fr); }
	.vtn-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
	.vtn-warr { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 575px) {
	.vtn-sec { padding: 24px 0; }
	.vtn-h2 { font-size: 1.18rem; }
	.vtn-actions .vtn-btn { width: 100%; }
	.vtn-steps { grid-template-columns: minmax(0, 1fr); }
	.vtn-table th { width: 38%; padding: 11px 12px; }
	.vtn-table td { padding: 11px 12px; }
	.vtn-contact { padding: 22px 16px; }
	.vtn-warr__value { font-size: 1.6rem; }
}
@media (prefers-reduced-motion: reduce) {
	.vtn-btn { transition: none; }
	.vtn-btn:hover { transform: none; }
}