:root {
  --navy: #10233d;
  --navy-2: #1b3454;
  --orange: #e8590c;
  --orange-dark: #c94b06;
  --ink: #16202c;
  --muted: #5b6b7d;
  --line: #e3e8ee;
  --bg: #f6f8fa;
  --white: #fff;
  --radius: 10px;
  --shadow: 0 2px 14px rgba(16, 35, 61, .08);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Segoe UI", "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.6;
  font-size: 16px;
}

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

.wrap {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- header ---------- */

.topbar {
  background: var(--navy);
  color: #cfd9e6;
  font-size: 13px;
}

.topbar .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  justify-content: space-between;
  padding-top: 7px;
  padding-bottom: 7px;
}

.topbar b { color: #fff; font-weight: 600; }

header.site {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, .97);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(6px);
}

header.site .wrap {
  display: flex;
  align-items: center;
  gap: 18px;
  min-height: 66px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: .5px;
  color: var(--navy);
  font-size: 19px;
  white-space: nowrap;
}

.logo .mark {
  width: 30px;
  height: 30px;
  border-radius: 7px;
  background: var(--orange);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 15px;
  font-weight: 800;
}

.logo-mark {
  height: 38px;
  width: auto;
  display: block;
  flex: 0 0 auto;
}

.about-logo {
  max-width: 260px;
  width: 100%;
  height: auto;
  margin-bottom: 18px;
}

.logo small {
  display: block;
  font-size: 11px;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0;
}

nav.main {
  margin-left: auto;
  display: flex;
  gap: 22px;
  font-size: 15px;
  font-weight: 500;
}

nav.main a:hover { color: var(--orange); }

.langs {
  display: flex;
  gap: 4px;
  font-size: 13px;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
}

.langs a {
  padding: 5px 9px;
  color: var(--muted);
}

.langs a.on {
  background: var(--navy);
  color: #fff;
  font-weight: 600;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--orange);
  color: #fff;
  font-weight: 600;
  padding: 11px 20px;
  border-radius: 8px;
  border: 0;
  font-size: 15px;
  cursor: pointer;
}

.btn:hover { background: var(--orange-dark); }

.btn.ghost {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, .55);
}

.btn.ghost:hover { background: rgba(255, 255, 255, .12); }

.btn.outline {
  background: #fff;
  color: var(--navy);
  border: 1.5px solid var(--line);
}

.btn.small { padding: 9px 15px; font-size: 14px; }

/* ---------- hero ---------- */

.hero {
  position: relative;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-2) 60%, #24507f 100%);
  color: #fff;
  padding: 66px 0 74px;
  overflow: hidden;
}

.hero .wrap {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 46px;
  align-items: center;
}

.eyebrow {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: #ffbf94;
  border: 1px solid rgba(255, 191, 148, .45);
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: 42px;
  line-height: 1.2;
  margin: 0 0 18px;
  font-weight: 800;
}

.hero p.lead {
  font-size: 17px;
  color: #d3dded;
  margin: 0 0 30px;
  max-width: 34em;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 26px;
}

.hero ul.quick {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  font-size: 14px;
  color: #c7d4e6;
}

.hero ul.quick li::before {
  content: "✓";
  color: #7ee0a1;
  margin-right: 7px;
  font-weight: 700;
}

/* placeholder blocks for photos */

.ph {
  border-radius: var(--radius);
  background: repeating-linear-gradient(45deg, #e9eef4, #e9eef4 12px, #dfe6ee 12px, #dfe6ee 24px);
  color: #5b6b7d;
  display: grid;
  place-items: center;
  text-align: center;
  font-size: 13px;
  font-weight: 600;
  padding: 14px;
  min-height: 160px;
  border: 1px dashed #c3cfdc;
}

.hero .ph {
  min-height: 320px;
  background: repeating-linear-gradient(45deg, rgba(255, 255, 255, .12), rgba(255, 255, 255, .12) 12px, rgba(255, 255, 255, .06) 12px, rgba(255, 255, 255, .06) 24px);
  color: #e6eef8;
  border-color: rgba(255, 255, 255, .35);
  font-size: 14px;
}

.hero-img {
  width: 100%;
  display: block;
  border-radius: var(--radius);
  box-shadow: 0 18px 44px rgba(0, 0, 0, .38);
}

/* ---------- sections ---------- */

/* ---------- inner page hero ---------- */

.page-hero {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-2) 65%, #24507f 100%);
  color: #fff;
  padding: 44px 0 50px;
}

.page-hero h1 {
  font-size: 34px;
  line-height: 1.22;
  margin: 0 0 14px;
}

.page-hero p {
  color: #d3dded;
  margin: 0 0 22px;
  max-width: 46em;
}

.crumbs {
  font-size: 13px;
  color: #9fb3cc;
  margin-bottom: 14px;
}

.crumbs a:hover { color: #fff; }

/* ---------- spec table ---------- */

.spec-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  font-size: 15px;
}

.spec-table th,
.spec-table td {
  text-align: left;
  padding: 11px 16px;
  border-bottom: 1px solid var(--line);
}

.spec-table th {
  width: 42%;
  background: #f4f7fa;
  color: var(--navy);
  font-weight: 600;
}

.spec-table tr:last-child th,
.spec-table tr:last-child td { border-bottom: 0; }

/* ---------- checklist / feature list ---------- */

.ticks {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 9px 26px;
  font-size: 15px;
  color: var(--ink);
}

.ticks li::before {
  content: "\2713";
  color: var(--orange);
  font-weight: 700;
  margin-right: 9px;
}

/* ---------- faq ---------- */

.faq { display: grid; gap: 12px; max-width: 900px; }

.faq details {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 15px 18px;
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--navy);
  font-size: 16px;
}

.faq p { margin: 10px 0 0; color: var(--muted); font-size: 15px; }

.note {
  background: #fff8f1;
  border: 1px solid #f6d9bd;
  border-radius: var(--radius);
  padding: 14px 18px;
  font-size: 14.5px;
  color: #7a4a17;
  margin-top: 22px;
}

section { padding: 62px 0; }

section.alt { background: var(--bg); }

.sec-head { max-width: 720px; margin-bottom: 34px; }

.sec-head .kicker {
  color: var(--orange);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 1.3px;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.sec-head h2 {
  font-size: 30px;
  margin: 0 0 12px;
  color: var(--navy);
  line-height: 1.25;
}

.sec-head p { margin: 0; color: var(--muted); }

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}

.card .ph { border-radius: 0; border: 0; border-bottom: 1px dashed #c3cfdc; min-height: 170px; }

.card-img {
  width: 100%;
  height: 190px;
  object-fit: cover;
  display: block;
  background: #e9eef4;
}

.card .body { padding: 18px 18px 20px; }

.card h3 {
  margin: 0 0 8px;
  font-size: 17px;
  color: var(--navy);
}

.card p {
  margin: 0 0 12px;
  font-size: 14.5px;
  color: var(--muted);
}

.card .spec {
  font-size: 13px;
  color: var(--navy);
  background: #f1f5f9;
  border-radius: 6px;
  padding: 7px 10px;
  display: inline-block;
  font-weight: 600;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 26px 0;
  text-align: center;
}

.stats b {
  display: block;
  font-size: 26px;
  color: var(--navy);
  line-height: 1.2;
}

.stats span { font-size: 13.5px; color: var(--muted); }

.why {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.why .item {
  display: flex;
  gap: 14px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
}

.why .ico {
  flex: 0 0 38px;
  height: 38px;
  border-radius: 8px;
  background: #eef4ff;
  color: var(--navy);
  display: grid;
  place-items: center;
  font-weight: 800;
}

.why h3 { margin: 0 0 5px; font-size: 16px; color: var(--navy); }
.why p { margin: 0; font-size: 14.5px; color: var(--muted); }

/* ---------- contact ---------- */

.contact-wrap {
  display: grid;
  grid-template-columns: 1fr .9fr;
  gap: 34px;
  align-items: start;
}

.channels { display: grid; gap: 12px; }

.chan {
  display: flex;
  align-items: center;
  gap: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 15px 17px;
  background: #fff;
}

.chan .ico {
  flex: 0 0 40px;
  height: 40px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-weight: 800;
  color: #fff;
  background: var(--navy);
}

.chan.zalo .ico { background: #0068ff; }
.chan.wa .ico { background: #25d366; }
.chan.mail .ico { background: #7a8b9c; }
.chan.tel .ico { background: var(--orange); }

.chan b { display: block; font-size: 15px; color: var(--navy); }
.chan span { font-size: 13.5px; color: var(--muted); }

form.inquiry {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
}

form.inquiry label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--navy);
  margin: 0 0 5px;
}

form.inquiry input,
form.inquiry textarea,
form.inquiry select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 7px;
  font: inherit;
  font-size: 14.5px;
  margin-bottom: 14px;
  background: #fcfdfe;
}

form.inquiry textarea { min-height: 92px; resize: vertical; }

/* ---------- footer ---------- */

footer.site {
  background: var(--navy);
  color: #b9c7d8;
  padding: 38px 0 26px;
  font-size: 14px;
}

footer.site .cols {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 30px;
  padding-bottom: 24px;
  border-bottom: 1px solid rgba(255, 255, 255, .12);
}

footer.site h4 { color: #fff; margin: 0 0 10px; font-size: 15px; }
footer.site a:hover { color: #fff; }
footer.site .legal { padding-top: 18px; font-size: 12.5px; color: #8fa2b8; }

/* ---------- responsive ---------- */

@media (max-width: 980px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .hero h1 { font-size: 34px; }
  .grid-3, .grid-4, .why, .contact-wrap, footer.site .cols { grid-template-columns: 1fr 1fr; }
  nav.main { display: none; }
}

@media (max-width: 640px) {
  .grid-3, .grid-4, .why, .contact-wrap, footer.site .cols { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; gap: 22px; }
  .hero { padding: 44px 0 50px; }
  .hero h1 { font-size: 28px; }
  section { padding: 44px 0; }
  .sec-head h2 { font-size: 24px; }
  .ticks { grid-template-columns: 1fr; }
  .page-hero h1 { font-size: 26px; }
}