:root {
  --ink: #14212a;
  --muted: #65737c;
  --line: #dbe4e7;
  --brand: #0b6f86;
  --brand-dark: #083342;
  --brand-soft: #e8f6f8;
  --accent: #f6c445;
  --accent-dark: #8a6400;
  --success: #13834f;
  --surface: #ffffff;
  --page: #f4f8f9;
  --shadow: 0 18px 46px rgba(13, 43, 52, .14);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  font-family: "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--page);
  line-height: 1.55;
  text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.icon-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}
h1, h2, h3, p { margin-top: 0; }
h1 {
  max-width: 900px;
  margin-bottom: 18px;
  font-size: clamp(36px, 5.2vw, 72px);
  line-height: 1.02;
  letter-spacing: 0;
}
h2 {
  margin-bottom: 14px;
  font-size: clamp(26px, 3.2vw, 46px);
  line-height: 1.12;
  letter-spacing: 0;
}
h3 {
  margin-bottom: 10px;
  font-size: 21px;
  line-height: 1.25;
}

.top-strip {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 8px clamp(16px, 5vw, 72px);
  background: var(--brand-dark);
  color: #dff5f7;
  font-size: 14px;
}
.top-strip a {
  color: var(--accent);
  font-weight: 800;
}
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 14px clamp(16px, 5vw, 72px);
  background: #fff;
  border-bottom: 1px solid rgba(219, 228, 231, .9);
}
.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  min-width: 220px;
}
.brand img {
  width: 50px;
  height: 50px;
  border: 1px solid #c7eef2;
  border-radius: 8px;
  object-fit: cover;
}
.brand span {
  display: grid;
  gap: 0;
}
.brand strong {
  color: var(--brand);
  font-size: 19px;
  line-height: 1.1;
}
.brand small {
  color: var(--muted);
  font-weight: 700;
}
.nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex: 1;
  color: #283c45;
  font-size: 15px;
  font-weight: 700;
}
.nav a {
  padding: 10px 12px;
  border-radius: 8px;
}
.nav a:hover {
  color: var(--brand);
  background: var(--brand-soft);
}
.search-box {
  display: flex;
  flex: 1;
  min-width: 260px;
  height: 46px;
  border: 2px solid var(--brand);
  border-radius: 8px;
  overflow: hidden;
  background: #fff;
}
.search-box input {
  min-width: 0;
  flex: 1;
  border: 0;
  padding: 0 14px;
  outline: 0;
  font: inherit;
}
.search-box button {
  border: 0;
  padding: 0 18px;
  background: var(--brand);
  color: #fff;
  cursor: pointer;
  font-weight: 900;
}
.header-actions {
  display: flex;
  gap: 10px;
  align-items: center;
}
.admin-link {
  padding: 10px 13px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--brand);
  font-weight: 800;
}
.hotline {
  padding: 11px 16px;
  border-radius: 8px;
  background: var(--brand);
  color: #fff;
  font-weight: 900;
  box-shadow: 0 10px 22px rgba(11, 111, 134, .25);
}
.quote-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 10px 14px;
  border-radius: 8px;
  font-weight: 900;
  white-space: nowrap;
}
.quote-link {
  background: var(--accent);
  color: #2e2500;
}
.shop-menu {
  position: sticky;
  top: 79px;
  z-index: 19;
  display: flex;
  gap: 0;
  overflow-x: auto;
  padding: 0 clamp(16px, 5vw, 72px);
  background: var(--brand);
  box-shadow: 0 10px 24px rgba(13, 43, 52, .14);
}
.shop-menu a {
  flex: 0 0 auto;
  padding: 13px 15px;
  color: #fff;
  font-size: 14px;
  font-weight: 900;
  text-transform: uppercase;
}
.shop-menu a:hover {
  background: rgba(255,255,255,.16);
}

.hero {
  min-height: auto;
  display: grid;
  grid-template-columns: 292px minmax(0, 1fr);
  gap: 18px;
  align-items: stretch;
  padding: 22px clamp(16px, 5vw, 72px);
  color: var(--ink);
  background: #eef5f6;
}
.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}
.lead {
  max-width: 760px;
  margin-bottom: 24px;
  color: rgba(255,255,255,.92);
  font-size: clamp(18px, 2vw, 23px);
}
.hero-actions, .form-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  border: 0;
  border-radius: 8px;
  padding: 13px 18px;
  cursor: pointer;
  font-weight: 900;
  font-size: 15px;
}
.btn.primary {
  background: var(--accent);
  color: #2e2500;
  box-shadow: 0 12px 26px rgba(246,196,69,.28);
}
.btn.secondary, .btn.ghost {
  background: #fff;
  color: var(--brand);
  border: 1px solid var(--line);
}
.trust-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  max-width: 720px;
  margin: 34px 0 0;
}
.trust-row div {
  padding: 15px;
  border: 1px solid rgba(255,255,255,.28);
  border-radius: 8px;
  background: rgba(255,255,255,.11);
}
.trust-row dt {
  color: rgba(255,255,255,.7);
  font-size: 14px;
}
.trust-row dd {
  margin: 2px 0 0;
  font-weight: 900;
}
.hero-categories {
  overflow: hidden;
  border: 1px solid #ddd;
  border-top: 5px solid #e31d24;
  border-radius: 0;
  background: #fff;
  box-shadow: none;
}
.hero-categories h2 {
  margin: 0;
  padding: 13px 13px 10px;
  background: #fff;
  color: var(--ink);
  font-size: 16px;
  text-transform: uppercase;
  border-bottom: 1px solid #eee;
}
.hero-categories a {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
  min-height: 38px;
  padding: 7px 12px;
  border-bottom: 0;
}
.hero-categories a:hover {
  background: #f3f7f8;
  color: var(--brand);
}
.hero-categories span {
  color: var(--ink);
  font-size: 15px;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.hero-categories svg {
  width: 24px;
  height: 24px;
  stroke: #111;
  stroke-width: 1.7;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.hero-categories a:hover svg {
  stroke: var(--brand);
}
.hero-main {
  display: grid;
  gap: 14px;
  min-width: 0;
}
.hero-banner {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 390px;
  overflow: hidden;
  border-radius: 8px;
  background:
    linear-gradient(90deg, rgba(8, 51, 66, .95) 0%, rgba(8, 51, 66, .82) 43%, rgba(8, 51, 66, .16) 100%),
    url("assets/images/bg-hero-office.jpg") center/cover;
  color: #fff;
  box-shadow: var(--shadow);
}
.hero-banner::after {
  content: "Thay ảnh banner tại đây";
  position: absolute;
  right: 18px;
  bottom: 14px;
  padding: 7px 10px;
  border: 1px solid rgba(255,255,255,.36);
  border-radius: 999px;
  background: rgba(0,0,0,.22);
  color: rgba(255,255,255,.84);
  font-size: 12px;
  font-weight: 800;
}
.banner-copy {
  width: min(650px, 70%);
  padding: clamp(24px, 5vw, 52px);
}
.banner-copy h1 {
  font-size: clamp(34px, 4.7vw, 64px);
}
.promo-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.promo-row a {
  display: grid;
  gap: 3px;
  min-height: 86px;
  padding: 18px;
  border-radius: 8px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 10px 24px rgba(18, 52, 60, .06);
}
.promo-row strong {
  color: var(--brand);
  font-size: 18px;
}
.promo-row span {
  color: var(--muted);
  font-weight: 700;
}
section { padding: 76px clamp(16px, 5vw, 72px); }
.proof-bar {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  padding-top: 0;
  padding-bottom: 0;
  background: #fff;
  border-bottom: 1px solid var(--line);
}
.proof-bar div {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: center;
  padding: 22px 18px;
  border-right: 1px solid var(--line);
}
.proof-bar div:last-child { border-right: 0; }
.proof-bar strong {
  color: var(--brand);
  font-size: 22px;
}
.proof-bar span {
  color: #334850;
  font-weight: 800;
}
.catalog-layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 28px;
  align-items: start;
  background: linear-gradient(180deg, #f8fcfc, #eef7f8);
}
.side-menu {
  position: sticky;
  top: 92px;
  display: grid;
  gap: 8px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 12px 34px rgba(18, 52, 60, .08);
}
.side-menu p {
  margin: 0 0 8px;
  padding: 0 4px 10px;
  border-bottom: 1px solid var(--line);
  color: var(--brand);
  font-size: 14px;
  font-weight: 900;
  text-transform: uppercase;
}
.side-menu a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 42px;
  padding: 11px 12px;
  border-radius: 8px;
  color: #263b44;
  font-weight: 800;
}
.side-menu a::after {
  content: "→";
  color: var(--brand);
  font-size: 20px;
  line-height: 1;
}
.side-menu a:hover {
  background: var(--brand);
  color: #fff;
}
.side-menu a:hover::after { color: #fff; }
.catalog-main {
  min-width: 0;
}
.feature-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.feature-list article {
  display: grid;
  gap: 8px;
  min-height: 132px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 10px 26px rgba(18, 52, 60, .06);
}
.feature-list strong {
  color: var(--brand-dark);
  font-size: 20px;
}
.feature-list span {
  color: var(--muted);
}
.section-head {
  max-width: 850px;
  margin-bottom: 30px;
}
.section-head.split {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: end;
  max-width: none;
}
.section-head p {
  margin-bottom: 8px;
  color: var(--brand);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}
.text-link {
  color: var(--brand);
  font-weight: 900;
  white-space: nowrap;
}
.service-band, .articles { background: #fff; }
.service-grid, .product-grid, .post-grid {
  display: grid;
  gap: 18px;
}
.service-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.product-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.post-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.service-grid article, .product-card, .post-card {
  position: relative;
  min-height: 100%;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 12px 34px rgba(18, 52, 60, .08);
}
.service-grid article {
  padding: 24px;
}
.service-grid article::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 4px;
  background: linear-gradient(90deg, var(--brand), var(--accent));
}
.service-grid article:hover, .product-card:hover, .post-card:hover {
  transform: translateY(-3px);
  transition: transform .18s ease, box-shadow .18s ease;
  box-shadow: 0 18px 42px rgba(18, 52, 60, .13);
}
.service-grid article p, .product-card p, .post-card p { color: var(--muted); }
.service-grid article a {
  display: inline-block;
  margin-top: 10px;
  color: var(--brand);
  font-weight: 900;
}
.icon {
  display: inline-grid;
  place-items: center;
  width: 46px;
  height: 46px;
  margin-bottom: 18px;
  border-radius: 8px;
  background: var(--brand-soft);
  color: var(--brand);
  font-weight: 900;
}
.product-card, .post-card {
  display: flex;
  flex-direction: column;
}
.product-card img, .post-card img {
  width: 100%;
  height: 190px;
  object-fit: cover;
  background: var(--brand-soft);
}
.product-card .badge, .product-card h3, .product-card p, .product-card .card-actions,
.post-card .badge, .post-card h3, .post-card p, .post-card .card-actions {
  margin-left: 20px;
  margin-right: 20px;
}
.product-card h3 {
  margin: 20px 20px 10px;
}
.product-card p {
  margin-left: 20px;
  margin-right: 20px;
}
.product-meta {
  display: grid;
  gap: 3px;
  margin: auto 20px 0;
  padding-top: 12px;
}
.product-meta strong {
  color: #d02121;
  font-size: 19px;
}
.product-meta span {
  color: var(--success);
  font-size: 13px;
  font-weight: 800;
}
.badge {
  display: inline-block;
  align-self: flex-start;
  margin-top: 18px;
  margin-bottom: 10px;
  padding: 6px 10px;
  border-radius: 999px;
  background: #fff5d6;
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 900;
}
.card-actions {
  display: flex;
  gap: 10px;
  margin-top: auto;
  margin-bottom: 20px;
  padding-top: 10px;
}
.card-actions a {
  flex: 1;
  text-align: center;
  padding: 11px 10px;
  border-radius: 8px;
  background: var(--brand);
  color: #fff;
  font-weight: 900;
}
.card-actions a:last-child { background: var(--success); }
.product-menu {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 22px;
}
.product-menu a {
  display: grid;
  gap: 4px;
  min-height: 96px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 10px 28px rgba(18, 52, 60, .07);
}
.product-menu a:hover {
  border-color: #9bd5dd;
  background: var(--brand-soft);
}
.product-menu strong {
  color: var(--brand);
  font-size: 20px;
}
.product-menu span {
  color: var(--muted);
  font-weight: 700;
}
.photo-rental {
  margin: 0 0 28px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 12px 32px rgba(18, 52, 60, .08);
}
.photo-rental-head {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: end;
  margin-bottom: 18px;
}
.photo-rental-head h3 {
  margin-bottom: 8px;
  font-size: clamp(24px, 2.6vw, 34px);
}
.photo-rental-head p:last-child {
  max-width: 820px;
  margin-bottom: 0;
  color: var(--muted);
}
.ricoh-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(185px, 1fr));
  gap: 16px;
  width: 100%;
  align-items: stretch;
}
.ricoh-grid article {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(180deg, #ffffff, #f8fcfc);
  overflow: hidden;
}
.ricoh-grid img {
  width: 100%;
  height: 154px;
  margin-bottom: 12px;
  padding: 10px;
  border: 1px solid #e2eef1;
  border-radius: 8px;
  background: #f4fafb;
  object-fit: contain;
}
.ricoh-grid span {
  align-self: flex-start;
  margin-bottom: 10px;
  padding: 5px 9px;
  border-radius: 999px;
  background: var(--brand-soft);
  color: var(--brand);
  font-size: 13px;
  font-weight: 900;
}
.ricoh-grid h4 {
  margin: 0 0 8px;
  color: var(--brand-dark);
  font-size: 19px;
}
.ricoh-grid p {
  margin-bottom: 12px;
  color: var(--muted);
}
.ricoh-specs {
  display: grid;
  gap: 6px;
  margin: 0 0 14px;
  padding: 10px;
  border: 1px solid #e4eef1;
  border-radius: 8px;
  background: #fbfefe;
  color: #40545d;
  font-size: 13px;
  line-height: 1.35;
  list-style: none;
}
.ricoh-specs li {
  display: grid;
  gap: 2px;
  padding-bottom: 6px;
  border-bottom: 1px solid #edf4f5;
}
.ricoh-specs li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}
.ricoh-specs b {
  color: var(--brand-dark);
}
.ricoh-grid strong {
  display: block;
  margin-top: auto;
  color: #d02121;
  font-size: 19px;
}
.ricoh-grid a {
  display: block;
  margin-top: 12px;
  padding: 10px;
  border-radius: 8px;
  background: var(--brand);
  color: #fff;
  font-weight: 900;
  text-align: center;
}
.landing-products {
  margin-top: 10px;
}
.landing-products .photo-rental-head h2 {
  max-width: 760px;
  margin-bottom: 8px;
  color: var(--brand-dark);
  font-size: clamp(26px, 3vw, 38px);
}
.landing-products .ricoh-grid {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.landing-products .ricoh-grid article {
  padding: 20px;
}
.landing-products .ricoh-grid img {
  height: 230px;
}
.why-band {
  display: grid;
  grid-template-columns: minmax(280px, .82fr) minmax(0, 1fr);
  gap: clamp(28px, 5vw, 68px);
  align-items: center;
  background: var(--brand-dark);
  color: #fff;
}
.why-media {
  min-height: 410px;
  border-radius: 8px;
  background:
    linear-gradient(rgba(8,51,66,.04), rgba(8,51,66,.16)),
    url("assets/images/bg-office-tech.jpg") center/cover;
  box-shadow: var(--shadow);
}
.why-copy h2 { max-width: 760px; }
.why-list {
  display: grid;
  gap: 14px;
  max-width: 780px;
}
.why-list p {
  margin: 0;
  padding: 16px;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 8px;
  background: rgba(255,255,255,.08);
  color: rgba(255,255,255,.86);
}
.why-list strong { color: #fff; }
.process { background: var(--page); }
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}
.process-grid article {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}
.process-grid span {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  margin-bottom: 16px;
  border-radius: 50%;
  background: var(--brand);
  color: #fff;
  font-weight: 900;
}
.process-grid p { color: var(--muted); }
.article-list {
  display: grid;
  gap: 22px;
}
.article-card {
  display: grid;
  grid-template-columns: minmax(260px, 360px) minmax(0, 1fr);
  gap: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 14px 38px rgba(18, 52, 60, .09);
}
.article-card img {
  width: 100%;
  height: 100%;
  min-height: 330px;
  object-fit: cover;
  background: var(--brand-soft);
}
.article-body {
  padding: 24px;
}
.article-kicker {
  margin-bottom: 8px;
  color: var(--brand);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}
.article-desc {
  color: var(--muted);
  font-weight: 700;
}
.article-content {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}
.article-content p {
  margin: 0;
  color: #334850;
}
.article-card ul {
  display: grid;
  gap: 8px;
  margin: 18px 0 0;
  padding-left: 20px;
  color: #273c44;
  font-weight: 700;
}
.article-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}
.price-page {
  background: var(--page);
}
.price-hero {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
  padding-top: 44px;
  padding-bottom: 34px;
  background: #fff;
}
.price-hero h1 {
  color: var(--brand-dark);
}
.price-hero p {
  max-width: 850px;
  color: var(--muted);
}
.source-line a {
  color: var(--brand);
  font-weight: 900;
}
.price-stats {
  display: grid;
  place-items: center;
  min-width: 180px;
  min-height: 130px;
  border-radius: 8px;
  background: var(--brand);
  color: #fff;
}
.price-stats strong {
  font-size: 42px;
  line-height: 1;
}
.price-stats span {
  font-weight: 800;
}
.price-tools {
  display: grid;
  gap: 14px;
  padding-top: 22px;
  padding-bottom: 22px;
}
.price-category-menu {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
}
.price-category-menu a {
  padding: 11px 12px;
  border: 1px solid var(--line);
  border-left: 4px solid var(--brand);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  font-weight: 800;
}
.price-category-menu a:hover {
  background: var(--brand-soft);
  color: var(--brand);
}
.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.filter-row button {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 14px;
  background: #fff;
  color: var(--ink);
  cursor: pointer;
  font-weight: 900;
}
.filter-row button.active,
.filter-row button:hover {
  border-color: var(--brand);
  background: var(--brand);
  color: #fff;
}
.price-note {
  margin: 0;
  color: var(--muted);
  font-weight: 700;
}
.price-table-wrap {
  padding-top: 0;
  overflow-x: auto;
}
.price-table {
  width: 100%;
  min-width: 900px;
  border-collapse: collapse;
  background: #fff;
  box-shadow: 0 12px 32px rgba(18, 52, 60, .08);
}
.price-table th,
.price-table td {
  padding: 13px 12px;
  border: 1px solid var(--line);
  text-align: left;
}
.price-table th {
  position: sticky;
  top: 0;
  background: var(--brand-dark);
  color: #fff;
  font-size: 13px;
  text-transform: uppercase;
}
.price-table td:first-child {
  width: 70px;
  text-align: center;
}
.price-table td:nth-child(4) {
  color: var(--muted);
}
.price-table td:last-child b {
  color: #d02121;
  font-size: 17px;
}
.landing-main {
  background: var(--page);
}
.landing-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, .9fr);
  gap: clamp(24px, 5vw, 64px);
  align-items: center;
  min-height: 520px;
  background: #fff;
}
.landing-hero h1 {
  color: var(--brand-dark);
}
.landing-hero p {
  max-width: 760px;
  color: var(--muted);
  font-size: 18px;
}
.photo-ad-hero {
  grid-template-columns: minmax(0, 1.05fr) minmax(340px, .72fr);
  align-items: stretch;
  background:
    linear-gradient(90deg, rgba(255,255,255,.98) 0%, rgba(255,255,255,.92) 58%, rgba(232,246,248,.78) 100%),
    url("assets/images/bg-office-tech.jpg") center/cover;
}
.photo-ad-hero > div:first-child {
  align-self: center;
}
.photo-ad-hero h1 {
  max-width: 820px;
  font-size: clamp(38px, 5vw, 66px);
}
.ad-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}
.ad-proof span {
  padding: 9px 12px;
  border: 1px solid #bfe2e8;
  border-radius: 999px;
  background: rgba(255,255,255,.84);
  color: var(--brand-dark);
  font-size: 14px;
  font-weight: 900;
}
.zalo-main {
  background: #0aa84f !important;
  color: #fff !important;
  box-shadow: 0 14px 28px rgba(10,168,79,.24) !important;
}
.zalo-lead-card {
  align-self: center;
  padding: clamp(22px, 3vw, 34px);
  border: 1px solid #bfe2e8;
  border-radius: 8px;
  background: rgba(255,255,255,.94);
  box-shadow: var(--shadow);
}
.lead-badge {
  display: inline-flex;
  margin-bottom: 14px;
  padding: 7px 10px;
  border-radius: 999px;
  background: #e6f8ed;
  color: #08733b;
  font-size: 13px;
  font-weight: 900;
}
.zalo-lead-card h2 {
  margin-bottom: 14px;
  color: var(--brand-dark);
  font-size: clamp(25px, 3vw, 36px);
}
.zalo-lead-card ul {
  display: grid;
  gap: 10px;
  margin: 0 0 18px;
  padding-left: 20px;
  color: #33464f;
  font-weight: 750;
}
.zalo-lead-card p {
  margin: 14px 0 0;
  font-size: 14px;
}
.landing-media {
  min-height: 360px;
  border-radius: 8px;
  background: var(--brand-soft) center/cover;
  box-shadow: var(--shadow);
}
.landing-photo { background-image: url("assets/images/bg-office-tech.jpg"); }
.landing-camera { background-image: url("assets/images/bg-contact-office.jpg"); }
.landing-computer { background-image: url("assets/images/bg-hero-office.jpg"); }
.landing-toner { background-image: url("assets/images/bg-office-tech.jpg"); }
.landing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}
.landing-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.landing-card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 12px 34px rgba(18, 52, 60, .08);
}
.landing-card h3 {
  color: var(--brand-dark);
}
.landing-card p,
.landing-card li {
  color: var(--muted);
}
.landing-card ul {
  display: grid;
  gap: 8px;
  margin: 12px 0 0;
  padding-left: 18px;
}
.ad-offer-strip {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px;
  align-items: center;
  padding: clamp(22px, 4vw, 34px);
  border: 1px solid #cfe7ec;
  border-radius: 8px;
  background: linear-gradient(135deg, #ffffff, #eaf8f1);
  box-shadow: 0 12px 34px rgba(18,52,60,.08);
}
.ad-offer-strip h2 {
  max-width: 820px;
  margin-bottom: 0;
  color: var(--brand-dark);
  font-size: clamp(24px, 3vw, 38px);
}
.landing-cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px;
  align-items: center;
  background: var(--brand-dark);
  color: #fff;
}
.landing-cta p {
  margin: 0;
  color: rgba(255,255,255,.82);
}
.photo-final-cta {
  background: linear-gradient(135deg, var(--brand-dark), #0b5f73);
}
.article-page {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
  gap: clamp(22px, 4vw, 42px);
  align-items: start;
  background: var(--page);
}
.article-detail {
  padding: clamp(24px, 4vw, 44px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 12px 34px rgba(18, 52, 60, .08);
}
.article-detail h1 {
  color: var(--brand-dark);
  font-size: clamp(34px, 4.4vw, 58px);
}
.article-lead {
  max-width: 850px;
  color: #435760;
  font-size: 20px;
  font-weight: 750;
}
.article-hero-image {
  width: 100%;
  max-height: 420px;
  margin: 18px 0 28px;
  border-radius: 8px;
  object-fit: cover;
}
.article-full-content {
  display: grid;
  gap: 14px;
  color: #263943;
  font-size: 18px;
}
.article-full-content p {
  margin-bottom: 0;
}
.article-takeaways,
.article-contact-box,
.related-posts {
  margin-top: 26px;
  padding: 22px;
  border: 1px solid #d7e8ec;
  border-radius: 8px;
  background: #f8fcfd;
}
.article-takeaways h2,
.article-contact-box h2,
.related-posts h2 {
  margin-bottom: 10px;
  color: var(--brand-dark);
  font-size: 24px;
}
.article-takeaways ul {
  display: grid;
  gap: 8px;
  margin: 0;
  padding-left: 20px;
}
.article-contact-box {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
  background: linear-gradient(135deg, #ffffff, #eaf8f1);
}
.article-contact-box p {
  margin-bottom: 0;
}
.article-sidebar {
  position: sticky;
  top: 142px;
}
.related-posts {
  background: #fff;
}
.related-posts div {
  display: grid;
  gap: 10px;
}
.related-posts a {
  display: grid;
  gap: 4px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfefe;
}
.related-posts strong {
  color: var(--brand);
}
.related-posts span {
  color: var(--muted);
  font-size: 14px;
}
.empty-state {
  display: none;
  padding: 26px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--muted);
  font-weight: 800;
  text-align: center;
}
.contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 480px);
  gap: 30px;
  align-items: center;
  color: #fff;
  background:
    linear-gradient(135deg, rgba(8, 51, 66, .96), rgba(11, 111, 134, .9)),
    url("assets/images/bg-contact-office.jpg") center/cover;
}
.contact-card {
  display: grid;
  gap: 12px;
  padding: 24px;
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  box-shadow: var(--shadow);
}
.contact-card a, .contact-card p {
  display: grid;
  gap: 4px;
  margin: 0;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.contact-card span {
  color: var(--muted);
  overflow-wrap: anywhere;
}
footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 22px clamp(16px, 5vw, 72px);
  background: #071820;
  color: #fff;
}
footer p { margin: 0; }
.float-actions {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 30;
  display: grid;
  gap: 10px;
}
.float-actions a {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: var(--accent);
  color: #2e2500;
  font-weight: 900;
  box-shadow: var(--shadow);
}
.float-actions a:last-child {
  background: var(--success);
  color: #fff;
}

.admin-page {
  background:
    linear-gradient(180deg, #eef7f8 0, #f7fafb 340px);
}
.admin-page .top-strip { display: none; }
.admin-shell { padding: 0; }
.admin-login {
  min-height: calc(100vh - 79px);
  display: grid;
  place-items: center;
  padding: clamp(28px, 6vw, 76px);
}
.login-box {
  width: min(100%, 520px);
}
.admin-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.admin-hero {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: end;
  color: #fff;
  background:
    linear-gradient(120deg, rgba(8,51,66,.97), rgba(11,111,134,.86)),
    url("assets/images/bg-hero-office.jpg") center/cover;
}
.admin-hero div { max-width: 850px; }
.admin-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
  gap: 22px;
}
.editor, .seo-check, .table-wrap {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 12px 34px rgba(18, 52, 60, .08);
}
.editor-title h2, .seo-check h2 { font-size: 26px; }
label {
  display: grid;
  gap: 7px;
  margin-bottom: 15px;
  color: #243944;
  font-weight: 900;
}
input, textarea, select {
  width: 100%;
  border: 1px solid #cbdcdf;
  border-radius: 8px;
  padding: 12px;
  font: inherit;
  color: var(--ink);
  background: #fff;
  outline-color: var(--brand);
}
textarea { resize: vertical; }
.check {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 auto 0 0;
}
.check input { width: auto; }
.seo-check {
  position: sticky;
  top: 92px;
  align-self: start;
}
.seo-check ul {
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 0 0 20px;
  list-style: none;
}
.seo-check li {
  padding: 11px;
  border-radius: 8px;
  background: #fff0ec;
  color: #94301f;
  font-weight: 800;
}
.seo-check li.ok {
  background: #edf9ef;
  color: #1c6f36;
}
.preview {
  padding: 17px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfdfd;
}
.preview p {
  margin-bottom: 4px;
  color: #1a0dab;
  font-size: 19px;
}
.preview span {
  display: block;
  color: #006621;
  overflow-wrap: anywhere;
}
.preview small {
  display: block;
  margin-top: 6px;
  color: #4d5156;
}
table {
  width: 100%;
  border-collapse: collapse;
}
th, td {
  padding: 14px 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}
th {
  color: var(--brand);
  font-size: 13px;
  text-transform: uppercase;
}
.row-actions {
  display: flex;
  gap: 8px;
}
.row-actions button {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 10px;
  background: #fff;
  cursor: pointer;
  font-weight: 900;
}

@media (max-width: 1120px) {
  .hero, .why-band, .contact, .admin-layout { grid-template-columns: 1fr; }
  .shop-menu { top: 78px; }
  .catalog-layout { grid-template-columns: 1fr; }
  .side-menu {
    position: static;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .side-menu p { grid-column: 1 / -1; }
  .service-grid, .product-grid, .process-grid, .product-menu { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .photo-rental-head { align-items: start; flex-direction: column; }
  .price-category-menu { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .article-card { grid-template-columns: 1fr; }
  .landing-hero, .landing-cta, .ad-offer-strip, .article-page, .article-contact-box { grid-template-columns: 1fr; }
  .landing-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .article-card img { min-height: 260px; }
  .proof-bar { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .admin-hero { align-items: start; flex-direction: column; }
  .seo-check { position: static; }
  .article-sidebar { position: static; }
}

@media (max-width: 760px) {
  .top-strip {
    display: grid;
    gap: 4px;
  }
  .topbar {
    position: static;
    flex-wrap: wrap;
    gap: 12px;
  }
  .shop-menu {
    position: static;
    padding-inline: 10px;
  }
  .brand {
    min-width: 0;
    flex: 1;
  }
  .search-box {
    order: 3;
    flex-basis: 100%;
  }
  .search-box button {
    padding-inline: 12px;
  }
  .nav {
    order: 3;
    width: 100%;
    justify-content: flex-start;
    gap: 6px;
    overflow-x: auto;
    padding-bottom: 4px;
  }
  .nav a {
    flex: 0 0 auto;
    padding: 9px 10px;
    background: #f3f8f9;
  }
  .header-actions { margin-left: auto; }
  .quote-link { display: none; }
  .admin-link { display: none; }
  .hotline { padding: 10px 12px; }
  .hero {
    min-height: auto;
    padding-top: 44px;
  }
  .hero-categories, .hero-main, .promo-row, .trust-row, .proof-bar,
  .service-grid, .product-grid, .post-grid, .process-grid,
  .feature-list, .side-menu, .product-menu, .price-category-menu, .landing-grid,
  .landing-products .ricoh-grid {
    grid-template-columns: 1fr;
  }
  .photo-ad-hero h1 {
    font-size: clamp(34px, 11vw, 46px);
  }
  .zalo-lead-card,
  .ad-offer-strip {
    padding: 20px;
  }
  .landing-actions .btn,
  .ad-offer-strip .btn,
  .photo-final-cta .btn,
  .article-contact-box .btn {
    width: 100%;
  }
  .hero-banner {
    min-height: 430px;
    align-items: flex-end;
    background:
      linear-gradient(180deg, rgba(8, 51, 66, .16) 0%, rgba(8, 51, 66, .95) 62%),
      url("assets/images/bg-office-tech.jpg") center/cover;
  }
  .banner-copy {
    width: 100%;
    padding: 24px;
  }
  .section-head.split {
    display: block;
  }
  .text-link {
    display: inline-block;
    margin-top: 4px;
    white-space: normal;
  }
  .why-media { min-height: 280px; }
  footer { flex-direction: column; }
  .float-actions {
    right: 10px;
    bottom: 10px;
  }
  .float-actions a {
    width: 52px;
    height: 52px;
  }
  .table-wrap { overflow-x: auto; }
}