:root {
  color-scheme: light;
  --ink: #0d1b2a;
  --muted: #5f6d72;
  --paper: #f4f6f5;
  --surface: #ffffff;
  --line: #dbe4e2;
  --navy: #0d1b2a;
  --green: #0b5d4e;
  --orange: #c46b1d;
  --teal: #0f7c72;
  --soft-green: #e9f3ef;
  --soft-blue: #edf3f6;
  --soft-orange: #fff3e8;
  --shadow: 0 22px 58px rgba(13, 27, 42, 0.12);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); line-height: 1.72; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
p { margin: 0; font-weight: 400; line-height: 1.72; overflow-wrap: anywhere; }
h1, h2, h3 { margin: 0; color: var(--navy); letter-spacing: 0; overflow-wrap: anywhere; }
h1 { max-width: 780px; font-size: clamp(2.9rem, 5.1vw, 5rem); line-height: 1.04; font-weight: 950; }
h2 { font-size: clamp(2rem, 3.7vw, 4rem); line-height: 1.08; font-weight: 900; }
h3 { font-size: clamp(1.14rem, 1.5vw, 1.38rem); line-height: 1.18; font-weight: 850; }
svg { width: 1em; height: 1em; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.site-header { position: sticky; top: 0; z-index: 20; display: grid; grid-template-columns: auto 1fr auto; gap: 22px; align-items: center; padding: 15px clamp(20px, 4.8vw, 72px); background: rgba(244, 246, 245, 0.94); border-bottom: 1px solid transparent; backdrop-filter: blur(18px); transition: border-color .18s ease, box-shadow .18s ease; }
.site-header.is-scrolled { border-color: var(--line); box-shadow: 0 12px 36px rgba(13, 27, 42, .08); }
.brand { display: grid; gap: 2px; min-width: 206px; }
.brand-text { color: #050607; font-size: 1.55rem; line-height: 1; font-weight: 950; }
.company-name { color: var(--muted); font-size: .74rem; font-weight: 700; }
.nav { display: flex; justify-content: center; gap: clamp(12px, 2vw, 26px); color: #3c4d50; font-size: .94rem; font-weight: 800; white-space: nowrap; }
.nav a:hover, .site-footer a:hover { color: var(--green); }
.header-tools { display: flex; align-items: center; gap: 12px; }
.language-switch { display: inline-flex; padding: 3px; border: 1px solid var(--line); border-radius: 10px; background: #fff; }
.language-switch button { min-width: 34px; height: 32px; border: 0; border-radius: 8px; background: transparent; color: var(--muted); font-weight: 850; cursor: pointer; }
.language-switch button.is-active { background: var(--navy); color: #fff; }
.header-action, .button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; border-radius: 10px; font-weight: 900; }
.header-action { padding: 10px 16px; color: #fff; background: var(--green); }
.section-shell { margin: 0 clamp(14px, 3vw, 36px) clamp(18px, 3vw, 32px); padding: clamp(46px, 6vw, 86px) clamp(20px, 5vw, 72px); border-radius: 24px; background: var(--surface); }
.hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(360px, .98fr); align-items: center; gap: clamp(38px, 6vw, 88px); min-height: calc(100vh - 92px); background: linear-gradient(135deg, #ffffff 0%, #f5faf8 52%, #e8f1ef 100%); }
.hero-copy { max-width: 760px; text-align: left; }
.eyebrow { position: relative; display: inline-block; margin: 0 0 18px; padding-bottom: 8px; color: var(--green); font-size: .78rem; font-weight: 950; line-height: 1.3; letter-spacing: 0; text-transform: uppercase; }
.eyebrow::after { content: ""; position: absolute; left: 0; bottom: 0; width: 48px; height: 3px; border-radius: 999px; background: var(--orange); }
.hero-text { max-width: 700px; margin-top: 26px; color: var(--muted); font-size: clamp(1.04rem, 1.35vw, 1.2rem); font-weight: 300; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.button { padding: 12px 20px; border: 1px solid transparent; cursor: pointer; }
.button.primary { color: #fff; background: var(--green); box-shadow: 0 16px 34px rgba(11, 93, 78, .25); }
.button.primary:hover { background: #084c40; }
.button.secondary { color: var(--navy); background: #fff; border-color: var(--line); }
.hero-visual { position: relative; }
.hero-visual::before { content: ""; position: absolute; inset: 9% -3% -4% 12%; border-radius: 24px; background: #dfece8; transform: rotate(-2deg); }
.hero-visual img { position: relative; width: 100%; aspect-ratio: 1 / 1.03; object-fit: cover; border: 1px solid rgba(13,27,42,.08); border-radius: 24px; box-shadow: var(--shadow); }
.metric-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin-top: 24px; }
.metric-card { display: grid; gap: 10px; align-items: start; min-height: 150px; padding: clamp(16px, 2vw, 22px); border: 1px solid var(--line); border-radius: 20px; background: rgba(255,255,255,.9); box-shadow: 0 16px 44px rgba(13,27,42,.06); }
.metric-icon { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 14px; color: #fff; background: var(--green); }
.metric-card:nth-child(2) .metric-icon { background: var(--navy); }
.metric-card:nth-child(3) .metric-icon { background: var(--orange); }
.metric-card strong { display: block; color: var(--orange); font-size: clamp(2.45rem, 3.7vw, 3.8rem); line-height: .9; font-weight: 950; white-space: nowrap; }
.metric-card span:last-child { display: block; color: var(--muted); font-size: .95rem; font-weight: 850; line-height: 1.35; }
.section-heading { max-width: 930px; margin-bottom: clamp(30px, 4vw, 48px); text-align: left; }
.section-heading.split { display: grid; grid-template-columns: minmax(0, .95fr) minmax(300px, .68fr); gap: clamp(24px, 5vw, 70px); max-width: none; align-items: end; }
.section-heading.split > p { color: var(--muted); font-size: 1.05rem; font-weight: 400; }
.about-grid, .why-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.info-card, .grade-card, .process-grid article { padding: clamp(22px, 3vw, 32px); border: 1px solid var(--line); border-radius: 20px; background: #fff; box-shadow: 0 14px 42px rgba(13,27,42,.05); text-align: left; }
.info-card p, .grade-card p, .process-grid p, .network-copy p, .note { margin-top: 14px; color: var(--muted); }
.wide-card { grid-column: span 2; background: var(--soft-blue); }
.card-icon { display: grid; place-items: center; width: 44px; height: 44px; margin-bottom: 24px; border-radius: 14px; color: #fff; background: var(--green); }
.grades { background: var(--soft-green); }
.grade-cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.grade-card span { display: inline-flex; align-items: center; justify-content: center; min-width: 54px; height: 38px; margin-bottom: 28px; padding: 0 12px; border-radius: 999px; color: #fff; font-weight: 950; }
.grade-aplus span { background: #0b5d4e; } .grade-a span { background: #16846f; } .grade-bplus span { background: #2563eb; } .grade-b span { background: #7c3aed; } .grade-cplus span { background: #c46b1d; } .grade-c span { background: #b91c1c; }
.note { font-size: .96rem; }
.brands { background: #fff; }
.brand-cloud { display: flex; flex-wrap: wrap; gap: 12px; }
.brand-cloud span { padding: 12px 16px; border: 1px solid var(--line); border-radius: 14px; color: var(--navy); background: var(--soft-blue); font-weight: 900; }
.inspection { background: #f7f8f4; }
.process-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.process-grid article span { display: inline-flex; margin-bottom: 30px; color: var(--orange); font-size: 1.28rem; font-weight: 950; }
.process-grid article strong { display: block; color: var(--navy); font-size: 1.14rem; }
.network { background: var(--soft-blue); }
.network-layout { display: grid; grid-template-columns: minmax(320px, .88fr) minmax(0, .96fr); gap: clamp(26px, 5vw, 72px); align-items: center; }
.map-card { padding: 24px; border: 1px solid var(--line); border-radius: 24px; background: #fff; box-shadow: var(--shadow); }
.network-copy { display: grid; gap: 16px; }
.why { background: #fff; }
.why-grid .info-card { min-height: 240px; }
.contact { display: grid; grid-template-columns: minmax(0, .9fr) minmax(320px, .72fr); gap: clamp(32px, 7vw, 96px); color: #fff; background: var(--navy); }
.contact h2 { color: #fff; }
.contact-copy p { max-width: 620px; color: #dce6e4; font-size: 1.08rem; }
.contact .eyebrow { color: #8ee4d8; }
.contact-details { display: grid; gap: 10px; margin-top: 28px; color: #fff; font-weight: 900; }
.contact-details a { color: #8ee4d8; font-size: 1.22rem; }
.contact-panel { display: grid; gap: 14px; padding: clamp(22px, 3vw, 30px); border-radius: 20px; background: #fff; color: var(--ink); }
.contact-channel { display: grid; grid-template-columns: 48px 1fr; align-items: center; gap: 14px; min-height: 76px; padding: 14px; border: 1px solid var(--line); border-radius: 16px; background: #f8faf7; transition: transform .16s ease, border-color .16s ease, box-shadow .16s ease; }
.contact-channel:hover { transform: translateY(-2px); border-color: rgba(11,93,78,.45); box-shadow: 0 14px 32px rgba(13,27,42,.08); }
.channel-icon { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 14px; color: #fff; background: var(--navy); font-weight: 950; }
.contact-channel.whatsapp .channel-icon { background: #128c7e; }
.contact-channel.zalo .channel-icon { background: #0068ff; }
.contact-channel.phone .channel-icon { background: var(--orange); }
.contact-channel strong { display: block; font-size: 1.08rem; }
.contact-channel small { display: block; margin-top: 2px; color: var(--muted); font-size: .94rem; }
.site-footer { display: flex; justify-content: space-between; gap: 18px; padding: 26px clamp(20px, 5vw, 72px); color: var(--muted); background: #edf1ee; }
.site-footer p { margin: 0; }
@media (max-width: 1120px) { .site-header { grid-template-columns: 1fr auto; } .nav { grid-column: 1 / -1; grid-row: 2; justify-content: flex-start; overflow-x: auto; padding-bottom: 4px; } .hero, .network-layout, .contact, .section-heading.split { grid-template-columns: 1fr; } .hero { min-height: auto; } .hero-visual { order: -1; max-width: 720px; } .about-grid, .why-grid, .grade-cards, .process-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 720px) { .site-header { gap: 14px; } .brand { min-width: 0; } .company-name { display: none; } .header-tools { grid-column: 1 / -1; justify-content: space-between; } .header-action { flex: 1; } .section-shell { margin: 0 10px 16px; padding: 42px 20px; border-radius: 18px; } h1 { font-size: clamp(2.15rem, 10vw, 3.25rem); } .hero-actions .button { width: 100%; } .metric-grid, .about-grid, .why-grid, .grade-cards, .process-grid { grid-template-columns: 1fr; } .wide-card { grid-column: auto; } .metric-card { min-height: auto; } .metric-icon { width: 44px; height: 44px; } .metric-card strong { font-size: 2.7rem; } .site-footer { flex-direction: column; } }