/* ===== Giao diện Kha Mercedes – Mẫu 01: Đen bạc sang trọng ===== */
:root {
  --bg: #0b0b0c;
  --bg-soft: #111113;
  --card: #0f0f11;
  --text: #e8e8ea;
  --muted: #9a9ca1;
  --dim: #6f7277;
  --silver: #c9cbd0;
  --border: #222326;
  --max: 1240px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 17px;
}
a { color: var(--silver); text-decoration: none; }
a:hover { color: #fff; }
img { max-width: 100%; height: auto; display: block; }
.container { max-width: var(--max); margin: 0 auto; padding: 0 40px; }

/* ---------- Thanh ưu đãi trên cùng ---------- */
.promo-bar {
  display: flex; align-items: center; justify-content: center; gap: 14px; flex-wrap: wrap;
  padding: 10px 20px; font-size: 13px; color: #1a1b1e; text-align: center;
  background: linear-gradient(90deg, #9a9da3, #eceef1 30%, #f7f8fa 50%, #eceef1 70%, #9a9da3);
}
.promo-bar:hover { color: #000; }
.pb-tag { background: #0b0b0c; color: #e8e8ea; padding: 3px 10px; font-size: 11px; letter-spacing: 2px; text-transform: uppercase; }
.pb-long { letter-spacing: .3px; }
.pb-short { display: none; }
.pb-cta { font-weight: 700; letter-spacing: 1px; white-space: nowrap; }

/* ---------- Khối ưu đãi trang chủ ---------- */
.offers { padding: 70px 0 80px; background: linear-gradient(180deg, #111113, var(--bg)); border-top: 1px solid var(--border); }
.offer-grid { display: flex; flex-wrap: wrap; gap: 1px; background: var(--border); border: 1px solid var(--border); margin-top: 10px; }
.offer { background: var(--card); padding: 30px 26px; flex: 1 1 200px; }
.offer .ic { width: 44px; height: 44px; border: 1px solid #3a3d43; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--silver); margin-bottom: 18px; }
.offer .ic svg { width: 22px; height: 22px; }
.offer h3 { font-weight: 500; font-size: 19px; margin: 0 0 6px; line-height: 1.35; }
.offer p { color: #8d9096; font-size: 14px; margin: 0; line-height: 1.6; }
.offer-hero { flex-basis: 100%; display: flex; align-items: center; gap: 36px; padding: 34px 36px;
  background: linear-gradient(110deg, #1d1f23 0%, #141518 60%, #0f0f11 100%); }
.offer-hero .big { font-size: 64px; font-weight: 200; line-height: 1; color: #fff; white-space: nowrap; }
.offer-hero .big small { font-size: 18px; letter-spacing: 3px; text-transform: uppercase; color: var(--silver); margin-left: 8px; }
.offer-hero h3 { font-size: 24px; font-weight: 300; margin: 0 0 6px; }
.offer-hero h3 b { font-weight: 600; }
.offer-hero p { font-size: 15px; color: var(--muted); }
.offer-hero .btn { margin-left: auto; white-space: nowrap; }
.offer-note { color: var(--dim); font-size: 13px; margin: 18px 0 0; }

/* ---------- Ảnh đồ họa & biểu đồ trong bài ---------- */
.do-hoa { margin: 30px 0 36px; }
.do-hoa .khung { overflow-x: auto; -webkit-overflow-scrolling: touch; border: 1px solid var(--border); }
.do-hoa img, .do-hoa svg { display: block; width: 100%; height: auto; }
.do-hoa figcaption { color: var(--dim); font-size: 13px; margin-top: 8px; }
.chart { background: #111113; }
.chart .bar { fill: #c9cbd0; transition: fill .15s; }
.chart .bar-row:hover .bar { fill: #ffffff; }
.chart .bar-row:hover .val { fill: #ffffff; }
.chart .hit { fill: transparent; }
.chart .grid { stroke: #24262a; stroke-width: 1; }
.chart .axis { fill: #6f7277; font-size: 16px; }
.chart .lbl { fill: #c4c6ca; font-size: 19px; }
.chart .val { fill: #9a9ca1; font-size: 18px; }
.chart .hl .bar { fill: #ffffff; }
.chart .hl .lbl, .chart .hl .val { fill: #ffffff; font-weight: 600; }

/* ---------- Xe lướt ---------- */
.empty-state { border: 1px dashed #3a3d43; padding: 40px 30px; text-align: center; margin: 26px 0 40px; }
.empty-state p { color: var(--muted); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: rgba(11,11,12,.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; height: 84px; gap: 24px; }
.logo { display: inline-flex; align-items: center; gap: 14px; font-size: 20px; letter-spacing: 6px; font-weight: 300; text-transform: uppercase; color: var(--text); white-space: nowrap; }
.logo img { width: 34px; height: 34px; }
.logo b { font-weight: 700; color: var(--silver); }
.logo:hover { color: var(--text); }
.nav { display: flex; gap: 26px; }
@media (max-width: 1180px) { .models { grid-template-columns: repeat(2, 1fr); } .nav { gap: 18px; } .nav a { letter-spacing: 1px; } .logo { letter-spacing: 4px; } }
.nav a { color: var(--muted); font-size: 13px; letter-spacing: 2px; text-transform: uppercase; }
.nav a:hover { color: #fff; }
.header-cta {
  border: 1px solid var(--silver); color: #fff; padding: 10px 22px;
  font-size: 13px; letter-spacing: 2px; white-space: nowrap;
}
.header-cta:hover { background: var(--silver); color: var(--bg); }
.header-actions { display: flex; align-items: center; gap: 10px; }
.social {
  width: 40px; height: 40px; border: 1px solid #444; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center; color: var(--silver);
  transition: background .2s, border-color .2s, color .2s;
}
.social svg { width: 22px; height: 22px; }
.social-zalo:hover { background: #0068ff; border-color: #0068ff; color: #fff; }
.social-fb:hover { background: #1877f2; border-color: #1877f2; color: #fff; }
.social-tt:hover { background: #000; border-color: #fe2c55; color: #fff; box-shadow: -2px -2px 0 #25f4ee inset; }
.fc-tt { background: #000; border: 1px solid #333; }
.fc-tt svg { width: 24px; height: 24px; }

/* ---------- Kiểu chữ chung ---------- */
.eyebrow { letter-spacing: 6px; font-size: 13px; color: #8d9096; text-transform: uppercase; }
.heading-light { font-weight: 200; }
.heading-light b { font-weight: 600; }
.btn {
  display: inline-block; background: var(--text); color: var(--bg);
  padding: 16px 34px; letter-spacing: 2px; font-size: 13px; text-transform: uppercase; font-weight: 600;
  border: 1px solid var(--text);
}
.btn:hover { background: transparent; color: #fff; }
.btn-ghost { background: transparent; color: var(--text); border-color: #444; margin-left: 12px; }
.btn-ghost:hover { border-color: var(--silver); }
.divider { height: 1px; background: linear-gradient(90deg, transparent, #555, transparent); }

/* ---------- Hero ---------- */
.hero {
  min-height: 560px; display: grid; grid-template-columns: 1fr 1.1fr; align-items: center; gap: 30px;
  background: radial-gradient(700px 400px at 75% 55%, #2a2c31, transparent 70%);
}
.hero h1 { font-size: clamp(40px, 5.2vw, 64px); font-weight: 200; line-height: 1.1; margin: 18px 0; }
.hero h1 b { font-weight: 600; }
.hero p { color: var(--muted); font-size: 18px; max-width: 470px; margin: 0 0 30px; }
.hero-car { color: #3a3d43; filter: drop-shadow(0 40px 40px #000); width: 100%; }
/* Ảnh hero tràn nửa phải màn hình, mờ dần về phía chữ */
.hero-wrap { position: relative; overflow: hidden; }
.hero-text { position: relative; z-index: 2; }
.hero-photo { position: absolute; top: 0; right: 0; bottom: 0; width: 60%; margin: 0; z-index: 1; }
.hero-photo img {
  width: 100%; height: 100%; display: block; object-fit: cover; object-position: 55% 58%;
  -webkit-mask-image: linear-gradient(to right, transparent 0%, #000 42%), linear-gradient(to bottom, transparent 0%, #000 16%, #000 80%, transparent 100%);
  -webkit-mask-composite: source-in;
  mask-image: linear-gradient(to right, transparent 0%, #000 42%), linear-gradient(to bottom, transparent 0%, #000 16%, #000 80%, transparent 100%);
  mask-composite: intersect;
}
.hero-photo .hero-car { display: none; }
.hero-photo.no-photo img { display: none; }
.hero-photo.no-photo .hero-car { display: block; position: absolute; top: 50%; right: 4%; width: 80%; transform: translateY(-50%); }

/* ---------- Sections ---------- */
section { padding: 90px 0; }
section h2 { font-weight: 200; font-size: 40px; margin: 0 0 14px; letter-spacing: .5px; line-height: 1.25; }
section h2 b { font-weight: 600; }
.section-lead { color: var(--muted); margin: 0 0 46px; }

/* Dòng xe – lưới liền khối */
.models { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--border); border: 1px solid var(--border); }
.model { background: var(--card); padding: 36px 30px; transition: background .2s; }
.model:hover { background: #17181b; }
.model small { color: var(--dim); letter-spacing: 3px; font-size: 11px; text-transform: uppercase; }
.model h3 { font-weight: 400; font-size: 24px; margin: 8px 0 6px; }
.model h3 a { color: var(--text); }
.model p { color: #888; font-size: 14px; margin: 0; line-height: 1.6; }

/* Về Kha */
.about { display: grid; grid-template-columns: 420px 1fr; gap: 70px; align-items: center; }
.portrait {
  height: 480px; background: linear-gradient(160deg, #2a2c31, #141518);
  display: flex; align-items: center; justify-content: center; color: #666; letter-spacing: 3px; font-size: 13px;
}
.about p { color: var(--muted); font-size: 17px; }
.portrait-img { width: 100%; height: 480px; object-fit: cover; object-position: 50% 25%; display: block; filter: grayscale(.15) contrast(1.03); }
.about-photo { margin: 6px 0 30px; }
.about-photo img { width: 100%; max-height: 560px; object-fit: cover; object-position: 50% 25%; display: block; }
.stats { flex-wrap: wrap; row-gap: 22px; }
img.avatar { object-fit: cover; background: none; }
.model-photo { margin: 0 0 34px; }
.model-photo img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; object-position: 55% 60%; display: block; }
.stats { display: flex; gap: 60px; margin-top: 36px; }
.stats b { display: block; font-size: 44px; font-weight: 200; line-height: 1.2; }
.stats span { color: #888; font-size: 12px; letter-spacing: 2px; text-transform: uppercase; }

/* Bài viết */
.posts { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 30px; }
.post { border-top: 1px solid #333; padding-top: 24px; }
.post .tag { color: var(--dim); letter-spacing: 3px; font-size: 11px; text-transform: uppercase; }
.post h3 { font-weight: 400; font-size: 22px; margin: 10px 0 8px; line-height: 1.35; }
.post h3 a { color: var(--text); }
.post p { color: #888; font-size: 15px; margin: 0; }

/* Hỏi đáp */
.faq details { border-bottom: 1px solid var(--border); padding: 22px 0; }
.faq summary { cursor: pointer; font-size: 19px; font-weight: 400; list-style: none; display: flex; justify-content: space-between; }
.faq summary::after { content: "+"; color: var(--silver); font-weight: 200; font-size: 24px; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq summary::-webkit-details-marker { display: none; }
.faq details p { color: var(--muted); margin: 14px 0 0; max-width: 820px; }

/* Kêu gọi liên hệ */
.contact-band { text-align: center; background: var(--bg-soft); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.contact-band p { color: var(--muted); margin: 0 0 30px; }

/* ---------- Bài viết chi tiết ---------- */
.article { max-width: 800px; margin: 0 auto; padding: 60px 24px 80px; }
.breadcrumb { font-size: 12px; letter-spacing: 2px; text-transform: uppercase; color: var(--dim); margin-bottom: 24px; }
.breadcrumb a { color: var(--dim); }
.article h1 { font-size: clamp(32px, 4.5vw, 46px); font-weight: 300; line-height: 1.2; margin: 0 0 16px; }
.meta { color: var(--dim); font-size: 14px; margin-bottom: 34px; letter-spacing: .5px; }
.article h2 { font-size: 28px; font-weight: 300; margin: 54px 0 14px; }
.article h3 { font-size: 20px; font-weight: 500; margin: 28px 0 10px; }
.article p, .article li { color: #c4c6ca; }
.tldr { background: var(--bg-soft); border-left: 2px solid var(--silver); padding: 22px 26px; margin: 0 0 34px; }
.tldr strong { color: #fff; }
.placeholder { background: rgba(255,196,0,.13); color: #ffd666; padding: 0 4px; }

table { width: 100%; border-collapse: collapse; margin: 18px 0 28px; font-size: 15px; }
th, td { border: 1px solid var(--border); padding: 12px 14px; text-align: left; }
th { background: var(--bg-soft); font-weight: 500; color: var(--silver); }
.pros-cons { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--border); border: 1px solid var(--border); }
.pros-cons > div { background: var(--card); padding: 18px 24px; }
.pros-cons h3 { margin-top: 6px; }

.author-box { display: flex; gap: 18px; align-items: center; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 24px 0; margin-top: 50px; }
.avatar { width: 60px; height: 60px; border-radius: 50%; flex-shrink: 0; background: linear-gradient(160deg, #3a3d43, #141518); }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--border); padding: 44px 0; color: var(--dim); font-size: 13px; text-align: center; letter-spacing: .5px; }
.site-footer p { margin: 6px 0; }
.site-footer .logo { font-size: 15px; margin-bottom: 14px; }
.site-footer .logo img { width: 28px; height: 28px; }

.footer-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px 26px; margin: 4px 0 18px; }
.footer-links a { color: var(--muted); font-size: 12px; letter-spacing: 2px; text-transform: uppercase; }

/* ---------- Nút liên hệ nổi (điện thoại) ---------- */
.float-contact { position: fixed; right: 16px; bottom: 18px; z-index: 30; display: none; flex-direction: column; gap: 12px; }
.float-contact a {
  width: 56px; height: 56px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 14px; box-shadow: 0 8px 24px rgba(0,0,0,.5);
}
.fc-zalo { background: #0068ff; }
.fc-call { background: #16a34a; animation: ring 2.4s infinite; }
.fc-call svg { width: 26px; height: 26px; }
@keyframes ring { 0%,100% { box-shadow: 0 0 0 0 rgba(22,163,74,.6); } 50% { box-shadow: 0 0 0 12px rgba(22,163,74,0); } }

/* ---------- Khối kêu gọi trong bài ---------- */
.cta-box { border: 1px solid #333; background: var(--bg-soft); padding: 30px; margin: 44px 0; text-align: center; }
.cta-box h2, .cta-box h3 { margin-top: 0; }
.cta-box p { color: var(--muted); }
.note { color: var(--dim); font-size: 14px; }

/* ---------- Form ---------- */
.form { display: grid; gap: 18px; margin-top: 10px; }
.form label { display: block; font-size: 12px; letter-spacing: 2px; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; }
.form input[type=text], .form input[type=tel], .form input[type=number], .form select, .form textarea {
  width: 100%; background: var(--bg-soft); border: 1px solid #333; color: var(--text);
  padding: 14px 16px; font: inherit; font-size: 16px; border-radius: 0;
}
.form input:focus, .form select:focus, .form textarea:focus { outline: none; border-color: var(--silver); }
.form .row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.choices { display: flex; flex-wrap: wrap; gap: 10px; }
.choices label { text-transform: none; letter-spacing: 0; font-size: 15px; color: var(--text); border: 1px solid #333; padding: 10px 16px; margin: 0; cursor: pointer; }
.choices input { margin-right: 8px; accent-color: var(--silver); }
.consent { font-size: 14px !important; letter-spacing: 0 !important; text-transform: none !important; color: var(--muted) !important; }
.hidden { display: none; }
.form button { cursor: pointer; font-family: inherit; }

/* ---------- Công cụ tính trả góp ---------- */
.calc { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--border); border: 1px solid var(--border); margin: 26px 0; }
.calc > div { background: var(--card); padding: 30px; }
.result-big { font-size: 40px; font-weight: 200; color: #fff; line-height: 1.2; margin: 6px 0 18px; }
.result-list { list-style: none; padding: 0; margin: 0; }
.result-list li { display: flex; justify-content: space-between; border-bottom: 1px solid var(--border); padding: 10px 0; color: var(--muted); }
.result-list b { color: var(--text); font-weight: 500; }

/* ---------- Khách hàng ---------- */
.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; margin: 24px 0 40px; }
.gallery figure { margin: 0; }
.gallery .ph { aspect-ratio: 4/3; background: linear-gradient(160deg, #2a2c31, #141518); display: flex; align-items: center; justify-content: center; color: #666; font-size: 12px; letter-spacing: 2px; text-align: center; padding: 10px; }
.gallery figcaption { color: var(--dim); font-size: 13px; margin-top: 6px; }
.quotes { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1px; background: var(--border); border: 1px solid var(--border); }
.quotes blockquote { margin: 0; background: var(--card); padding: 26px; color: var(--muted); font-style: italic; }
.quotes cite { display: block; margin-top: 12px; font-style: normal; color: var(--text); font-size: 14px; }

/* ---------- Trang lỗi 404 ---------- */
.notfound { text-align: center; padding: 120px 24px; }
.notfound .big { font-size: 120px; font-weight: 100; line-height: 1; color: #3a3d43; }

/* ---------- Điện thoại ---------- */
@media (max-width: 900px) {
  .container { padding: 0 20px; }
  .nav { display: none; }
  .site-header .container { height: 68px; }
  .logo { font-size: 17px; letter-spacing: 4px; }
  .header-cta { padding: 8px 12px; font-size: 11px; letter-spacing: 1px; }
  .header-actions { gap: 6px; }
  .social { width: 34px; height: 34px; }
  .social svg { width: 19px; height: 19px; }
  .site-header .logo span { display: none; }
  .do-hoa .khung img, .do-hoa .khung svg { min-width: 720px; }
  .do-hoa figcaption::after { content: " · Vuốt ngang để xem đầy đủ"; }
  .pb-long { display: none; }
  .pb-short { display: inline; }
  .promo-bar { gap: 10px; font-size: 12px; padding: 9px 12px; }
  .offer { flex-basis: 100%; }
  .offer-hero { flex-direction: column; align-items: flex-start; gap: 16px; padding: 28px 24px; }
  .offer-hero .btn { margin-left: 0; }
  .offers { padding: 50px 0 60px; }
  .float-contact { display: flex; }
  .site-footer { padding-bottom: 150px; }
  .form .row2, .calc { grid-template-columns: 1fr; }
  .result-big { font-size: 32px; }
  .hero { grid-template-columns: 1fr; min-height: auto; padding: 60px 0 0; }
  .hero-photo { position: relative; width: auto; margin: 10px -20px 0; }
  .hero-photo img { height: auto; aspect-ratio: 1 / 1;
    -webkit-mask-image: linear-gradient(to bottom, transparent 0%, #000 18%, #000 80%, transparent 100%);
    mask-image: linear-gradient(to bottom, transparent 0%, #000 18%, #000 80%, transparent 100%); }
  .hero-photo.no-photo .hero-car { position: static; transform: none; width: 100%; }
  .about { grid-template-columns: 1fr; gap: 36px; }
  .models { grid-template-columns: 1fr; }
  .portrait { height: 360px; }
  .portrait-img { height: 420px; }
  .stats { gap: 22px 36px; }
  .stats b { font-size: 34px; }
  .pros-cons { grid-template-columns: 1fr; }
  section { padding: 60px 0; }
  section h2 { font-size: 30px; }
  .btn-ghost { margin: 12px 0 0; }
}

/* Ảnh thực tế (thư viện ảnh xe) – gắn bằng cong-cu/nap-anh.py */
.thu-vien { margin: 40px 0; }
.thu-vien-luoi { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; margin-top: 16px; }
.thu-vien figure { margin: 0; }
.thu-vien a { display: block; overflow: hidden; border: 1px solid var(--border); }
.thu-vien img { display: block; width: 100%; height: auto; aspect-ratio: 4 / 3; object-fit: cover; transition: transform .3s ease; }
.thu-vien a:hover img { transform: scale(1.04); }
.thu-vien figcaption { color: var(--dim); font-size: 13px; margin-top: 6px; }
@media (max-width: 600px) { .thu-vien-luoi { grid-template-columns: repeat(2, 1fr); gap: 8px; } }

/* Trang công nghệ + liên kết công nghệ trong bài – tạo bởi cong-cu/tao-cong-nghe.py */
.article a.lk-cn { text-decoration: underline dotted; text-underline-offset: 3px; }
.cong-nghe-xe, .xe-co { margin: 40px 0; padding: 22px 24px; border: 1px solid var(--border); }
.cong-nghe-xe h2, .xe-co h2 { margin-top: 0; }
.cong-nghe-xe ul, .xe-co ul { margin: 12px 0 0; padding-left: 18px; }
.cong-nghe-xe li, .xe-co li { margin: 8px 0; }
.cn-luoi { margin: 18px 0 34px; }
.nav a { white-space: nowrap; }
@media (max-width: 1320px) { .nav { gap: 16px; } .nav a { letter-spacing: 1px; font-size: 12.5px; } }
.models.cn-luoi { grid-template-columns: repeat(2, 1fr); }
.cn-luoi .model { padding: 26px 24px; }
.cn-luoi .model h3 { font-size: 20px; }
@media (max-width: 600px) { .models.cn-luoi { grid-template-columns: 1fr; } }

/* Bảng so sánh nhiều cột – cuộn ngang trên điện thoại */
.bang-cuon { overflow-x: auto; -webkit-overflow-scrolling: touch; margin: 0 0 8px; }
.bang-so-sanh { min-width: 720px; }
.bang-so-sanh tbody th { text-align: left; font-weight: 600; white-space: nowrap; }
@media (max-width: 900px) { .bang-cuon + .note::before { content: "Vuốt ngang để xem đủ bảng. "; font-weight: 600; } }
.bang-so-sanh { font-size: 14px; }
.bang-so-sanh tbody th { white-space: normal; min-width: 120px; }
.bang-so-sanh td { min-width: 130px; }

/* ---------- Slide ảnh bìa trang chủ ---------- */
.hero-slider .slide { position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity .9s ease, visibility 0s linear .9s; }
.hero-slider .slide.is-on { opacity: 1; visibility: visible; transition: opacity .9s ease; }
.hero-slider .slide-me img { object-position: 50% 50%; filter: brightness(.72); }
.me-phone { position: absolute; width: 168px; right: 8%; top: 50%; transform: translateY(-58%) rotate(-4deg);
  filter: drop-shadow(0 30px 40px rgba(0,0,0,.7)); font-family: inherit; }
.slide-tag { position: absolute; right: 6%; bottom: 13%; display: flex; flex-direction: column; gap: 2px; max-width: 300px;
  padding: 14px 18px; border-radius: 12px; background: rgba(11,11,12,.78); border: 1px solid rgba(201,203,208,.35);
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px); color: #fff; text-decoration: none; z-index: 3; }
.slide-tag small { font-size: 11px; letter-spacing: 2px; text-transform: uppercase; color: var(--silver); }
.slide-tag b { font-size: 17px; font-weight: 600; }
.slide-tag span { font-size: 14px; color: var(--muted); }
.slide-tag:hover { border-color: var(--silver); }
.slide-tag:hover span { color: #fff; }
.slide-me .slide-tag { right: auto; left: 30%; }
.slide-dots { position: absolute; right: 6%; bottom: 6%; display: flex; gap: 8px; z-index: 3; }
.slide-dots button { width: 26px; height: 4px; padding: 0; border: 0; border-radius: 2px; background: rgba(255,255,255,.3); cursor: pointer; }
.slide-dots button.is-on { background: #fff; }
@media (max-width: 900px) {
  .hero-slider { aspect-ratio: 1 / 1; }
  .hero-slider .slide img { height: 100%; }
  .slide-tag, .slide-me .slide-tag { left: 20px; right: auto; bottom: 16%; max-width: 70%; padding: 10px 14px; }
  .me-phone { width: 112px; right: 5%; top: 9%; transform: rotate(-4deg); }
  .slide-me .slide-tag { max-width: 56%; }
  .slide-tag b { font-size: 15px; }
  .slide-dots { right: 20px; bottom: 8%; }
}

/* ---------- Ảnh nhỏ trên thẻ dòng xe / bài viết (trang chủ) ---------- */
.the-anh { display: block; overflow: hidden; background: #111; }
.the-anh img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .5s ease; }
.model .the-anh { margin: -36px -30px 22px; aspect-ratio: 16 / 10; }
.post .the-anh { margin: 0 0 18px; aspect-ratio: 16 / 9; border-radius: 6px; }
.model:hover .the-anh img, .post:hover .the-anh img { transform: scale(1.05); }
.post { border-top: 0; padding-top: 0; }
/* Hình minh họa tự vẽ trên trang công nghệ */
.minh-hoa { margin: 28px 0 34px; }
.minh-hoa img { width: 100%; height: auto; display: block; border-radius: 8px; border: 1px solid var(--border); }

/* Ảnh kho miễn phí (Unsplash) trong bài */
.anh-kho { margin: 26px 0 30px; }
.anh-kho img { width: 100%; height: auto; display: block; border-radius: 8px; aspect-ratio: auto; }
.anh-kho figcaption a { color: inherit; text-decoration: underline; }

/* ---------- Showroom gặp Kha ---------- */
.showroom-luoi { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin: 18px 0 30px; }
.showroom { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 18px 20px; }
.showroom-chinh { border-color: var(--silver); }
.showroom small { color: var(--dim); letter-spacing: 2px; font-size: 11px; text-transform: uppercase; }
.showroom h3 { font-size: 17px; font-weight: 600; margin: 6px 0 4px; }
.showroom p { margin: 0 0 4px; }
.showroom .btn { margin-top: 10px; padding: 8px 16px; font-size: 12px; }
@media (max-width: 700px) { .showroom-luoi { grid-template-columns: 1fr; } }
.hen-kha { background: #17181b; border-left: 3px solid var(--silver); border-radius: 8px; padding: 16px 20px; margin: 14px 0 6px; }
.hen-kha p { margin: 0 0 8px; }
.hen-kha .btn { margin-top: 6px; }
.showroom-luoi.ba-cot { grid-template-columns: repeat(3, 1fr); }
.showroom.xuong { border-style: dashed; }
@media (max-width: 860px) { .showroom-luoi.ba-cot { grid-template-columns: 1fr; } }