/* Layout: graphite top bar and sticky header with mega menu; blueprint-grid hero closing on a hazard stripe; square-cornered spec cards on a cool steel ground; fans lead the catalogue. */
:root {
  --bg: #eceff2;
  --surface: #ffffff;
  --ink: #141b22;
  --muted: #536070;
  --line: #d2d8de;
  --head: #1b232b;
  --foot: #12181e;
  --accent: #f2a400;
  --on-accent: #14191e;
  --accent-ink: #965800;
  --tech: #17628f;
  --hero-a: #1b232b;
  --hero-b: #2b3a48;
  --grid: rgba(255, 255, 255, .055);
  --img-bg: #f3f5f7;
  --on-dark: #e8edf1;
  --on-dark-2: #a8b5c1;
  --on-dark-line: rgba(255, 255, 255, .13);
  --on-dark-edge: rgba(255, 255, 255, .42);
  --amber-hi: #ffbf2e;
  --logo-plate: #ffffff;
  --font-display: "Barlow Condensed", "Arial Narrow", Arial, sans-serif;
  --font-body: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0e1318; --surface: #161d24; --ink: #e6ebef; --muted: #98a5b2; --line: #27313b;
    --head: #0a0e12; --foot: #080b0e;
    --accent: #ffb81c; --accent-ink: #ffc547; --tech: #62b4e8;
    --hero-a: #0a0e12; --hero-b: #18242f; --grid: rgba(255, 255, 255, .045);
    --img-bg: #1d262e;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0e1318; --surface: #161d24; --ink: #e6ebef; --muted: #98a5b2; --line: #27313b;
  --head: #0a0e12; --foot: #080b0e;
  --accent: #ffb81c; --accent-ink: #ffc547; --tech: #62b4e8;
  --hero-a: #0a0e12; --hero-b: #18242f; --grid: rgba(255, 255, 255, .045);
  --img-bg: #1d262e;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg); color: var(--ink);
  font-family: var(--font-body); font-size: 15px; line-height: 1.6;
  padding-block: 0;
}
body::before {
  content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px);
  z-index: 60; background: var(--head);
}
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
h1, h2, h3, h4 { margin: 0; font-family: var(--font-display); line-height: 1.1; text-wrap: balance; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }

.wrap {
  width: 100%; max-width: 1240px; margin-inline: auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}

/* Top bar */
.topbar { background: var(--foot); color: var(--on-dark-2); font: 400 12px/1.5 var(--font-mono); letter-spacing: .01em; }
.topbar .wrap { display: flex; flex-wrap: wrap; gap: 2px 28px; padding-block: 8px; justify-content: space-between; }
.topbar span { min-width: 0; }
.topbar b { font-weight: 500; color: var(--on-dark); }

/* Header */
.header { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 50; background: var(--head); color: var(--on-dark); border-bottom: 1px solid var(--on-dark-line); }
.header .wrap { position: relative; display: flex; align-items: center; gap: 20px; min-height: 82px; }
.logo, .footer-logo { display: block; flex: none; background: var(--logo-plate); border-radius: 2px; line-height: 0; }
.logo { padding: 4px 10px; }
.logo img { display: block; height: 66px; width: auto; mix-blend-mode: multiply; }
.footer-logo { display: inline-block; padding: 8px 14px; margin-bottom: 16px; }
.footer-logo img { display: block; height: 124px; width: auto; mix-blend-mode: multiply; }
.nav { margin-left: auto; }
.nav > ul { display: flex; gap: 0; align-items: center; }
.nav > ul > li > a { display: block; padding: 24px 12px; white-space: nowrap; font-family: var(--font-display); font-weight: 600; font-size: 17px; letter-spacing: .06em; text-transform: uppercase; line-height: 1.1; }
.nav > ul > li > a:hover { color: var(--amber-hi); box-shadow: inset 0 -3px 0 var(--accent); }
.mega { display: none; position: absolute; left: max(16px, env(safe-area-inset-left, 0px)); right: max(16px, env(safe-area-inset-right, 0px)); top: 100%; background: var(--surface); color: var(--ink); border: 1px solid var(--line); border-top: 3px solid var(--accent); padding: 22px 24px; box-shadow: 0 20px 40px rgba(10, 14, 18, .22); grid-template-columns: repeat(4, 1fr); gap: 20px 28px; }
.has-sub:hover .mega, .has-sub:focus-within .mega { display: grid; }
.mega h4 { margin: 0 0 6px; font-weight: 700; font-size: 19px; letter-spacing: .05em; text-transform: uppercase; color: var(--ink); }
.mega a { display: block; padding: 3px 0; color: var(--muted); font-size: 14px; }
.mega a:hover { color: var(--accent-ink); }
.menu-btn { display: none; margin-left: auto; background: transparent; border: 1px solid var(--on-dark-edge); color: inherit; width: 44px; height: 44px; border-radius: 2px; }
.menu-btn svg { width: 22px; height: 22px; }
.cta { display: inline-flex; align-items: center; justify-content: center; gap: 8px; background: var(--accent); color: var(--on-accent); border: 1px solid var(--accent); padding: 11px 20px; font-weight: 600; font-size: 14px; letter-spacing: .03em; border-radius: 2px; }
.cta:hover { filter: brightness(1.07); }
.cta.ghost { background: transparent; color: var(--on-dark); border-color: var(--on-dark-edge); }
.cta.ghost:hover { border-color: var(--on-dark); filter: none; }
.header .cta { flex: none; }

/* Hero */
.hero {
  position: relative; overflow: hidden; color: var(--on-dark);
  background:
    linear-gradient(var(--grid) 1px, transparent 1px) 0 0 / 40px 40px,
    linear-gradient(90deg, var(--grid) 1px, transparent 1px) 0 0 / 40px 40px,
    linear-gradient(115deg, var(--hero-a), var(--hero-b));
}
.hero::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 8px; background: repeating-linear-gradient(-45deg, var(--accent) 0 12px, var(--on-accent) 12px 24px); }
.slides { display: grid; position: relative; }
.slide { grid-area: 1 / 1; display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: center; padding-block: 52px 76px; visibility: hidden; opacity: 0; transition: opacity .5s ease, visibility .5s; }
.slide.on { visibility: visible; opacity: 1; }
.slide > * { min-width: 0; }
.slide .kicker { margin-bottom: 14px; font: 500 12px/1.4 var(--font-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--amber-hi); }
.slide h1 { font-size: clamp(38px, 6vw, 68px); font-weight: 700; text-transform: uppercase; letter-spacing: .01em; }
.slide p.lead { margin-top: 16px; max-width: 46ch; font-size: 17px; color: var(--on-dark-2); }
.slide .row { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 12px; }
.hero-art { position: relative; background: var(--img-bg); border: 1px solid var(--on-dark-line); }
.hero-art::before, .hero-art::after { content: ""; position: absolute; width: 24px; height: 24px; border: 3px solid var(--accent); pointer-events: none; }
.hero-art::before { top: -8px; left: -8px; border-right: 0; border-bottom: 0; }
.hero-art::after { right: -8px; bottom: -8px; border-left: 0; border-top: 0; }
.dots { position: absolute; left: 0; right: 0; bottom: 24px; display: flex; gap: 8px; justify-content: center; align-items: center; z-index: 3; }
.dots button { width: 36px; height: 12px; padding: 4px 0; border: 0; background: rgba(255, 255, 255, .35); background-clip: content-box; }
.dots button[aria-current="true"] { background-color: var(--accent); }
.arrow { position: absolute; top: 50%; transform: translateY(-50%); z-index: 3; width: 44px; height: 44px; border: 1px solid var(--on-dark-edge); background: rgba(20, 25, 30, .55); color: var(--on-dark); display: grid; place-items: center; }
.arrow:hover { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.arrow.prev { left: max(8px, env(safe-area-inset-left, 0px)); }
.arrow.next { right: max(8px, env(safe-area-inset-right, 0px)); }
.arrow svg { width: 20px; height: 20px; }

/* Images */
.ph { display: block; width: 100%; height: auto; background: var(--img-bg); }
.ph .l { fill: var(--surface); stroke: var(--muted); stroke-width: 1.6; stroke-linejoin: round; stroke-linecap: round; }
.ph .n { fill: none; stroke: var(--muted); stroke-width: 1.6; stroke-linejoin: round; stroke-linecap: round; }
.ph .cap { fill: var(--muted); font: 500 4.6px var(--font-body); letter-spacing: .1em; }
.ph-img { display: block; width: 100%; height: auto; aspect-ratio: 4 / 3; object-fit: cover; background: var(--img-bg); }
.pcard .ph-img, .catcard .ph-img, .project .ph-img, .post .ph-img { border-bottom: 1px solid var(--line); }

/* Sections */

.article { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 28px; align-items: start; }
.article figure { margin: 0; display: grid; gap: 12px; }
.article .ph-img { border: 1px solid var(--line); }
.article h3 { font-size: 22px; line-height: 1.25; margin-bottom: 10px; }
.article p { margin-bottom: 12px; line-height: 1.65; }
.tw { overflow-x: auto; }
.fit .ph-img { aspect-ratio: 16 / 9; }
.pwr { width: 100%; border-collapse: collapse; margin: 14px 0 16px; font-size: 14px; background: var(--surface); }
.pwr th, .pwr td { border: 1px solid var(--line); padding: 9px 12px; text-align: left; }
.pwr th { background: var(--head); color: #fff; font: 500 12px/1.4 var(--font-mono); letter-spacing: .06em; text-transform: uppercase; }
.pwr td:first-child { font-weight: 600; white-space: nowrap; }
.article ul { padding-left: 20px; margin: 0 0 14px; line-height: 1.65; }
.article .cta { display: inline-block; background: var(--accent); color: var(--on-accent); font-weight: 700; padding: 11px 20px; border: 0; border-radius: 2px; cursor: pointer; }
@media (max-width: 899px) { .article { grid-template-columns: 1fr; } }
.section { padding-block: 48px 0; }
.section-head { display: flex; align-items: center; gap: 14px 16px; flex-wrap: wrap; margin-bottom: 20px; }
.section-head h2 { display: flex; align-items: center; gap: 12px; font-size: clamp(26px, 3.2vw, 33px); font-weight: 700; text-transform: uppercase; letter-spacing: .04em; color: var(--ink); }
.section-head h2::before { content: ""; width: 12px; height: 12px; flex: none; background: var(--accent); }
.section-head .rule { flex: 1 1 40px; height: 1px; background: var(--line); min-width: 24px; }
.section-head .more { font: 500 12px/1 var(--font-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--accent-ink); white-space: nowrap; }
.section-head .more::after { content: " \2192"; }
.section-head .more:hover { text-decoration: underline; text-underline-offset: 4px; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { background: transparent; border: 1px solid var(--line); color: var(--muted); padding: 4px 12px; font-size: 12.5px; font-weight: 500; border-radius: 2px; }
.chip:hover { border-color: var(--ink); color: var(--ink); }
.chip[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--on-accent); font-weight: 600; }

/* Cards */
.catcard, .pcard, .project, .post, .panel { background: var(--surface); border: 1px solid var(--line); border-radius: 2px; }
.catrow { display: grid; grid-template-columns: repeat(var(--n, 4), minmax(0, 1fr)); gap: 14px; }
.catcard { display: block; overflow: hidden; }
.catcard:hover, .pcard:hover { border-color: var(--accent); box-shadow: 0 8px 20px rgba(10, 14, 18, .12); }
.catcard .meta { padding: 12px 14px 14px; }
.catcard strong { display: block; font-family: var(--font-display); font-weight: 700; font-size: 21px; line-height: 1.15; text-transform: uppercase; letter-spacing: .04em; }
.catcard span { font: 400 12px/1.5 var(--font-mono); color: var(--muted); }

.grid { display: grid; gap: 14px; }
.grid.p6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
.grid.p4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid.p3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.pcard { overflow: hidden; display: flex; flex-direction: column; min-width: 0; }
.pcard .body { padding: 12px 14px 14px; display: flex; flex-direction: column; gap: 4px; flex: 1; }
.pcard h3 { font-family: var(--font-body); font-size: 14px; font-weight: 600; line-height: 1.35; min-height: 2.7em; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.pcard .price { font: 500 12px/1.5 var(--font-mono); color: var(--tech); }
.pcard .quote { margin-top: auto; width: 100%; background: transparent; border: 1px solid var(--line); border-radius: 2px; padding: 7px 12px; font-size: 12.5px; font-weight: 600; text-align: center; }
.pcard .body .quote { margin-top: 10px; }
.pcard .quote:hover { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }

.two { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.panel { padding: 24px; }
.panel h3 { font-size: 27px; font-weight: 700; text-transform: uppercase; letter-spacing: .03em; color: var(--ink); }
.panel p { margin-top: 8px; color: var(--muted); max-width: 62ch; }
.panel ul { margin-top: 14px; display: grid; gap: 6px; }
.panel li { padding-left: 18px; position: relative; color: var(--ink); font-size: 14px; }
.panel li::before { content: ""; position: absolute; left: 0; top: .6em; width: 6px; height: 6px; background: var(--accent); }

.projects { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.project { overflow: hidden; }
.project .body { padding: 12px 14px 14px; }
.project h3 { font-family: var(--font-body); font-size: 15px; font-weight: 600; }
.project p { font-size: 13px; color: var(--muted); margin-top: 4px; }

.videos { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.video .thumb { position: relative; overflow: hidden; border: 1px solid var(--line); border-radius: 2px; }
.video .play { position: absolute; inset: 0; display: grid; place-items: center; background: linear-gradient(transparent 40%, rgba(10, 14, 18, .35)); }
.video .play i { width: 46px; height: 46px; background: var(--accent); display: grid; place-items: center; }
.video .play svg { width: 18px; height: 18px; fill: var(--on-accent); margin-left: 3px; }
.video h3 { margin-top: 8px; font-family: var(--font-body); font-size: 14px; font-weight: 500; line-height: 1.4; }

.news { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.post { overflow: hidden; display: flex; flex-direction: column; }
.post .body { padding: 14px 16px 18px; display: flex; flex-direction: column; gap: 6px; }
.post time { font: 400 12px/1.5 var(--font-mono); color: var(--muted); }
.post h3 { font-family: var(--font-body); font-size: 15.5px; line-height: 1.4; font-weight: 600; }
.post p { font-size: 13.5px; color: var(--muted); display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }

.why { margin-top: 56px; background: var(--head); color: var(--on-dark); }
.why .wrap { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; padding-block: 34px; }
.why .wrap > div + div { border-left: 1px solid var(--on-dark-line); padding-left: 24px; }
.why svg { width: 38px; height: 38px; stroke: var(--amber-hi); fill: none; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.why h3 { margin-top: 10px; font-size: 22px; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; }
.why p { margin-top: 4px; font-size: 13.5px; color: var(--on-dark-2); }

/* Footer */
.footer { background: var(--foot); color: var(--on-dark-2); padding-block: 44px 24px; }
.footer .cols { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 32px; }
.footer .cols > * { min-width: 0; }
.footer h4 { margin: 0 0 10px; font-weight: 700; font-size: 20px; letter-spacing: .06em; text-transform: uppercase; color: var(--on-dark); }
.footer p, .footer li { font-size: 14px; line-height: 1.75; }
.footer b { font-weight: 600; color: var(--on-dark); }
.footer li a:hover { color: var(--amber-hi); }
.footer .name { margin-bottom: 10px; font-family: var(--font-display); font-weight: 700; font-size: 25px; color: var(--on-dark); text-transform: uppercase; letter-spacing: .05em; }
.footer .copy { margin-top: 30px; padding-top: 16px; border-top: 1px solid var(--on-dark-line); font: 400 12px/1.6 var(--font-mono); }
.mapbox { margin-top: 12px; border: 1px solid var(--on-dark-line); border-radius: 2px; padding: 14px; font-size: 13px; }
.mapbox a { color: var(--amber-hi); font-weight: 600; }

/* Floating contacts */
.float { position: fixed; right: max(12px, env(safe-area-inset-right, 0px)); bottom: calc(14px + env(safe-area-inset-bottom, 0px)); z-index: 40; display: grid; gap: 10px; }
.float a { width: 48px; height: 48px; border-radius: 50%; display: grid; place-items: center; color: #fff; font-weight: 700; font-size: 12px; box-shadow: 0 6px 16px rgba(0, 0, 0, .3); }
.float .fb { background: #1f5fbf; }
.float .zl { background: #0b6fd6; }
.float .ph-call { background: var(--accent); color: var(--on-accent); }
.float svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

/* Dialog */
dialog { border: 1px solid var(--line); border-top: 3px solid var(--accent); border-radius: 2px; background: var(--surface); color: var(--ink); width: min(440px, calc(100vw - 32px)); padding: 0; }
dialog::backdrop { background: rgba(8, 11, 14, .64); }
dialog form { padding: 22px; display: grid; gap: 12px; }
dialog h3 { font-size: 27px; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; color: var(--ink); }
dialog label { display: grid; gap: 4px; font-size: 13px; color: var(--muted); }
dialog input, dialog textarea { font: inherit; color: var(--ink); background: var(--bg); border: 1px solid var(--line); border-radius: 2px; padding: 10px 12px; width: 100%; }
dialog textarea { min-height: 84px; resize: vertical; }
dialog .row { display: flex; gap: 10px; justify-content: flex-end; flex-wrap: wrap; }
dialog .row .cta.ghost { color: var(--ink); border-color: var(--line); }
.status { font-size: 13px; color: var(--muted); }

@media (max-width: 1099px) {
  .grid.p6 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .catrow { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .mega { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 1199px) {
  .header > .wrap > .cta { display: none; }
}
@media (max-width: 1023px) {
  .header .wrap { min-height: 64px; gap: 12px; }
  .logo { padding: 3px 8px; }
  .logo img { height: 50px; }
  .menu-btn { display: grid; place-items: center; }
  .nav { position: absolute; left: 0; right: 0; top: 100%; margin: 0; background: var(--head); display: none; max-height: calc(100vh - 100px); overflow-y: auto; border-top: 1px solid var(--on-dark-line); }
  .nav.open { display: block; }
  .nav > ul { flex-direction: column; align-items: stretch; padding: 8px max(16px, env(safe-area-inset-left, 0px)) 16px; }
  .nav > ul > li > a { padding: 13px 0; border-bottom: 1px solid var(--on-dark-line); }
  .nav > ul > li > a:hover { box-shadow: none; }
  .mega { position: static; border: 0; box-shadow: none; padding: 8px 0 8px 12px; background: transparent; color: var(--on-dark); grid-template-columns: 1fr; gap: 8px; }
  .has-sub:hover .mega, .has-sub:focus-within .mega { display: none; }
  .has-sub.open .mega { display: grid; }
  .mega a { color: var(--on-dark-2); }
  .mega h4 { color: var(--amber-hi); font-size: 17px; }
}
@media (max-width: 899px) {
  .slide { grid-template-columns: 1fr; padding-block: 36px 60px; gap: 26px; }
  .hero-art { max-width: 420px; }
  .arrow { display: none; }
  .catrow { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .two, .projects, .news { grid-template-columns: 1fr; }
  .videos { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid.p4, .grid.p3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .why .wrap { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .why .wrap > div + div { border-left: 0; padding-left: 0; }
  .footer .cols { grid-template-columns: 1fr; }
}
@media (max-width: 559px) {
  .grid.p6 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .topbar .addr { display: none; }
  .section { padding-block: 40px 0; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .slide { transition: none; }
}

/* ===== v2: header/footer sáng, logo trong suốt, banner mới ===== */
html{scroll-padding-top:96px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
body::before{background:#fff}
.topbar{background:#0a2a5e}
.header{background:#fff;color:#12263f;border-bottom:1px solid #dbe3ea}
.header .wrap{min-height:84px}
.logo{background:none;padding:0}
.logo img{height:70px;mix-blend-mode:normal}
.nav > ul > li > a:hover{color:#0b4f9c}
.menu-btn{border-color:#c4d0dc}
.footer{background:#e8eef4;color:#3b4b5c}
.footer h4,.footer b,.footer .name{color:#12263f}
.footer .copy{border-top-color:#cdd8e3}
.footer-logo{background:none;padding:0;margin-bottom:12px}
.footer-logo img{height:116px;mix-blend-mode:normal}
.footer li a:hover,.mapbox a{color:#0b4f9c}
.mapbox{border-color:#cdd8e3}
.hero,.phero{position:relative;overflow:hidden;color:#fff;background:radial-gradient(800px 380px at 88% 0%,rgba(70,170,255,.30),transparent 62%),linear-gradient(115deg,#06224d,#0b4a8f 68%,#0f6aa8)}
.hero::before,.phero::before{content:"";position:absolute;inset:0;pointer-events:none;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 520' preserveAspectRatio='none'%3E%3Cg fill='none' stroke='%23fff' stroke-opacity='.17' stroke-width='1.5'%3E%3Cpath d='M0 360C240 280 420 440 720 360S1200 280 1440 360'/%3E%3Cpath d='M0 405C260 325 440 485 740 405S1220 325 1440 405'/%3E%3Cpath d='M0 450C280 370 460 530 760 450S1240 370 1440 450'/%3E%3C/g%3E%3C/svg%3E") 0 0/100% 100% no-repeat}
.hero::after{display:none}
.slide{padding-block:56px 128px}
.slide .h{font:700 clamp(36px,5.6vw,64px)/1.05 var(--font-display);text-transform:uppercase;text-wrap:balance}
.slide .kicker{color:#8fd1ff}
.hero-art{background:rgba(255,255,255,.07);padding:10px;border:1px solid rgba(255,255,255,.22)}
.hero-art .ph-img{aspect-ratio:4/3}
.dots{bottom:86px}
.groups{position:relative;z-index:4;margin-top:-84px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.gcard{display:grid;grid-template-columns:128px minmax(0,1fr);background:var(--surface);border:1px solid var(--line);border-top:3px solid var(--accent);overflow:hidden;box-shadow:0 14px 30px rgba(8,30,70,.18)}
.gcard:hover{border-color:var(--accent)}
.gcard img{height:100%;aspect-ratio:auto;border:0}
.gcard .meta{padding:16px 18px}
.gcard strong{display:block;font:700 23px/1.15 var(--font-display);letter-spacing:.03em}
.gcard p{font-size:13px;color:var(--muted);margin:6px 0 10px}
.gcard .go{font:500 12px var(--font-mono);color:var(--accent-ink)}
.phero{padding-block:40px 48px}
.phero h1{font:700 clamp(32px,5vw,52px)/1.05 var(--font-display);text-transform:uppercase;position:relative}
.phero .lead{position:relative;margin-top:12px;max-width:64ch;color:#c9d8ea;font-size:16px}
.phero .row{position:relative;margin-top:20px;display:flex;gap:12px;flex-wrap:wrap}
.crumb{position:relative;font:12px var(--font-mono);color:#9fb7d3;margin-bottom:12px}
.crumb a:hover{text-decoration:underline}
@media(max-width:1023px){.nav{background:#fff;border-top-color:#dbe3ea}.nav > ul > li > a{border-bottom-color:#e3e9ef}}
@media(max-width:899px){.groups{grid-template-columns:1fr;margin-top:-64px}.slide{padding-block:36px 100px}.dots{bottom:76px}}
.arrow{top:auto;bottom:70px;transform:none}
.arrow.prev{left:auto;right:76px}
.arrow.next{right:16px}
@media(max-width:899px){.arrow{display:none}}

.float .tt{background:#111}

/* ===== hiệu ứng banner ===== */
.hero > canvas{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:1}
.hero > .wrap{z-index:2}
.tagline{display:flex;flex-wrap:wrap;align-items:center;gap:8px 14px;padding-top:26px;font-family:var(--font-display);text-transform:uppercase}
.tg-dot{width:9px;height:9px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 0 rgba(255,184,28,.7)}
.tg-main{font-weight:700;font-size:19px;letter-spacing:.14em;color:#fff;text-shadow:0 0 10px rgba(120,200,255,.45)}
.tg-sep{width:34px;height:2px;background:var(--accent)}
.tg-word{font-weight:700;font-size:21px;letter-spacing:.1em;color:var(--amber-hi);min-width:8.5em;text-shadow:0 0 12px rgba(255,191,46,.55)}
.slide{padding-block:34px 128px}
.slide .kicker{font:600 18px/1.3 var(--font-display);letter-spacing:.08em;text-transform:none;color:#8fd1ff}
.slide .kicker::before{content:"";display:inline-block;width:28px;height:2px;background:var(--accent);vertical-align:middle;margin-right:10px}
.slide .h{text-shadow:0 2px 26px rgba(0,20,60,.5)}
@media(prefers-reduced-motion:no-preference){
 .tg-dot{animation:ping 1.4s ease-out infinite}
 .tg-main{animation:glow 2.6s ease-in-out infinite}
 .tg-word.in{animation:flick .9s steps(1,end) both}
 .slide.on .kicker,.slide.on .h,.slide.on .lead,.slide.on .row{animation:rise .75s cubic-bezier(.2,.7,.2,1) both}
 .slide.on .h{animation-delay:.08s}.slide.on .lead{animation-delay:.16s}.slide.on .row{animation-delay:.24s}
}
@keyframes ping{0%{box-shadow:0 0 0 0 rgba(255,184,28,.75)}70%,100%{box-shadow:0 0 0 12px rgba(255,184,28,0)}}
@keyframes glow{0%,100%{opacity:.82;text-shadow:0 0 8px rgba(120,200,255,.3)}50%{opacity:1;text-shadow:0 0 24px rgba(120,200,255,.95),0 0 3px #fff}}
@keyframes flick{0%{opacity:0;transform:translateY(8px)}12%{opacity:1;transform:none}22%{opacity:.25}32%{opacity:1}46%{opacity:.55}58%,100%{opacity:1;transform:none}}
@keyframes rise{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
@media(max-width:899px){.tg-main{font-size:16px}.tg-word{font-size:18px;min-width:0}.tg-sep{width:22px}.slide{padding-block:24px 100px}}

/* ===== dải chữ chạy kiểu LED ===== */
.led{position:relative;overflow:hidden;background:#050d1c radial-gradient(rgba(255,255,255,.07) 1px,transparent 1.3px) 0 0/4px 4px;border-block:1px solid #16315f;color:#ffbf2e}
.led-track{display:flex;width:max-content}
.led-half{display:flex;align-items:center;flex:none}
.led-i,.led-tel{display:block;padding:10px 0;font:600 19px/1 var(--font-display);letter-spacing:.14em;white-space:nowrap;text-shadow:0 0 6px rgba(255,191,46,.85),0 0 16px rgba(255,150,0,.45)}
.led-tel{color:#fff;text-shadow:0 0 6px rgba(255,255,255,.8),0 0 18px rgba(80,180,255,.8)}
.led-tel:hover{color:var(--amber-hi)}
.led-dot{flex:none;width:7px;height:7px;margin:0 30px;border-radius:50%;background:#ffbf2e;box-shadow:0 0 8px #ffbf2e}
@media(prefers-reduced-motion:no-preference){.led-track{animation:ledrun 48s linear infinite}.led:hover .led-track{animation-play-state:paused}}
@media(prefers-reduced-motion:reduce){.led{overflow-x:auto}}
@keyframes ledrun{to{transform:translateX(-50%)}}
@media(max-width:899px){.led-i,.led-tel{font-size:16px;padding:9px 0}.led-dot{margin:0 20px}}
/* banner không còn chồng lên thẻ nhóm */
.groups{margin-top:28px}
.slide{padding-block:34px 84px}
.dots{bottom:26px}
.arrow{bottom:18px}
@media(max-width:899px){.groups{margin-top:20px}.slide{padding-block:24px 64px}.dots{bottom:20px}}

/* ===== banner v6: sân khấu sáng cho ảnh sản phẩm ===== */
.hero-art{position:relative;background:none;border:0;padding:0;max-width:none}
.hero-art::before{inset:auto;top:-34px;left:-34px;right:-34px;bottom:-34px;width:auto;height:auto;border:0;background:radial-gradient(closest-side,rgba(90,180,255,.40),transparent 74%);z-index:0}
.hero-art::after{display:none}
.stage{position:relative;z-index:1;clip-path:polygon(0 0,calc(100% - 46px) 0,100% 46px,100% 100%,46px 100%,0 calc(100% - 46px));background:radial-gradient(circle at 50% 44%,#fff 0,#e4effa 55%,#b9d4ec 100%)}
.stage .ph-img{mix-blend-mode:multiply;background:none;aspect-ratio:4/3;border:0}
.chip-f{position:absolute;z-index:2;background:rgba(6,34,77,.92);border:1px solid rgba(143,209,255,.45);border-left:3px solid var(--accent);padding:9px 15px;font:600 16px/1.2 var(--font-display);letter-spacing:.05em;color:#fff;box-shadow:0 12px 26px rgba(0,10,40,.45)}
.chip-f.c1{left:-28px;bottom:52px}
.chip-f.c2{right:-16px;top:34px}
@media(prefers-reduced-motion:no-preference){.chip-f.c1{animation:bob 5s ease-in-out infinite}.chip-f.c2{animation:bob 5s ease-in-out -2.5s infinite}}
@keyframes bob{50%{transform:translateY(-8px)}}
@media(max-width:899px){.hero-art{max-width:460px}.chip-f{font-size:14px;padding:7px 12px}.chip-f.c1{left:-6px;bottom:30px}.chip-f.c2{right:-6px;top:18px}}
/* dải LED luôn chạy (tạm dừng khi rê chuột) */
.led-track{animation:ledrun 48s linear infinite}
.led:hover .led-track{animation-play-state:paused}

/* ===== giới thiệu công ty ===== */
.about{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:36px;align-items:start}
.about-txt h3{font-size:30px;font-weight:700;text-transform:uppercase;letter-spacing:.03em;margin-bottom:14px}
.about-txt p{max-width:68ch;margin-bottom:14px;line-height:1.75}
.about-note{padding:14px 18px;border-left:3px solid var(--accent);background:var(--surface);color:var(--muted)}
.about-fig{margin:0;position:sticky;top:104px}
.about-fig .stage{background:var(--surface)}
.about-fig .ph-img{mix-blend-mode:normal;aspect-ratio:4/3;object-fit:cover}
.about-fig figcaption{display:flex;align-items:baseline;gap:12px;margin-top:12px;padding-left:12px;border-left:3px solid var(--accent)}
.about-fig b{font:700 44px/1 var(--font-display);color:var(--tech)}
.about-fig span{font-size:14px;color:var(--muted)}
@media(max-width:899px){.about{grid-template-columns:1fr;gap:22px}.about-fig{position:static;order:-1}}
@media(max-width:1279px){.nav > ul > li > a{padding-inline:8px;font-size:16px}}