:root {
  color-scheme: light;
  --navy: #082b59;
  --navy-deep: #071d49;
  --blue: #0878f9;
  --blue-strong: #0069eb;
  --blue-soft: #eaf4ff;
  --text: #102452;
  --muted: #667da9;
  --line: #dbe9f8;
  --white: #fff;
  --container: 1280px;
  --radius: 16px;
  font-family: "Quicksand", "Arial Rounded MT Bold", Arial, sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: clip; }
body {
  margin: 0;
  background: var(--white);
  color: var(--text);
  font-size: 15px;
  line-height: 1.55;
}
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { color: inherit; }
svg { display: block; }
.nrv4-container { width: min(var(--container), calc(100% - 56px)); margin-inline: auto; }
.nrv4-visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

/* Keep the header in view; JavaScript only hides it while the visitor is scrolling down. */
.nrv4-site-header { position: sticky; z-index: 100; top: 0; transition: transform .36s cubic-bezier(.22, .61, .36, 1); }
.nrv4-site-header.header-is-hidden { transform: translateY(-100%); }
.nrv4-site-header.nrv4-search-is-open { transform: none; transition: none; }
.nrv4-site-header.menu-is-open, .nrv4-site-header.menu-is-closing { transform: none; transition: none; }
.nrv4-utility-bar { max-height: 40px; overflow: hidden; transition: max-height .24s ease, opacity .18s ease; }
.nrv4-site-header.header-is-condensed .nrv4-utility-bar { min-height: 0; max-height: 0; opacity: 0; }

@media (prefers-reduced-motion: reduce) {
  .nrv4-site-header, .nrv4-utility-bar { transition: none; }
}

/* Utility bar */
.nrv4-utility-bar { min-height: 40px; color: #f7fbff; background: linear-gradient(100deg, #0b315f, #174b83); font-size: 13px; }
.nrv4-utility-inner, .nrv4-utility-contact, .nrv4-utility-links { display: flex; align-items: center; }
.nrv4-utility-inner { justify-content: space-between; min-height: 40px; gap: 24px; }
.nrv4-utility-contact, .nrv4-utility-links { gap: 18px; }
.nrv4-utility-contact a, .nrv4-utility-links a { display: inline-flex; align-items: center; gap: 8px; white-space: nowrap; transition: color .2s ease; }
.nrv4-utility-contact a:hover, .nrv4-utility-links a:hover { color: #9dd0ff; }
.nrv4-utility-icon { display: block; flex: 0 0 16px; width: 16px; height: 16px; fill: none; stroke: #b8ddff; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.nrv4-utility-divider { width: 1px; height: 17px; background: rgba(255,255,255,.35); }
.nrv4-utility-tagline { color: #e1efff; }
.nrv4-utility-links a span { color: #c7e5ff; font-size: 17px; }

/* Primary navigation */
.nrv4-main-nav-wrap { position: relative; z-index: 20; background: rgba(255,255,255,.97); border-bottom: 1px solid #e8f0f9; box-shadow: 0 4px 16px rgba(10, 48, 93, .045); }
.nrv4-main-nav { display: flex; align-items: center; justify-content: space-between; min-height: 82px; gap: 28px; }
.nrv4-brand { flex: 0 0 auto; display: inline-flex; align-items: center; }
.nrv4-brand img { display: block; width: 236px; height: auto; }
.nrv4-primary-navigation { align-self: stretch; display: flex; align-items: stretch; }
.nrv4-nav-list { display: flex; align-items: stretch; gap: clamp(16px, 2.1vw, 34px); padding: 0; margin: 0; list-style: none; }
.nrv4-nav-item { position: relative; display: flex; align-items: stretch; }
.nrv4-nav-link { position: relative; display: inline-flex; align-items: center; gap: 8px; padding: 4px 0; border: 0; background: transparent; color: var(--navy-deep); font-size: 16px; font-weight: 700; cursor: pointer; white-space: nowrap; transition: color .2s ease; }
.nrv4-nav-link:hover, .nrv4-nav-item.nrv4-is-open > .nrv4-nav-link { color: var(--blue); }
.nrv4-nav-link::after { position: absolute; right: 0; bottom: 0; left: 0; height: 3px; border-radius: 3px 3px 0 0; background: var(--blue); content: ""; transform: scaleX(0); transform-origin: center; transition: transform .2s ease; }
.nrv4-nav-item:hover > .nrv4-nav-link::after, .nrv4-nav-item.nrv4-is-open > .nrv4-nav-link::after, .nrv4-nav-link:focus-visible::after { transform: scaleX(1); }
.nrv4-chevron { width: 8px; height: 8px; border-right: 1.8px solid currentColor; border-bottom: 1.8px solid currentColor; transform: rotate(45deg) translateY(-2px); transition: transform .18s ease; }
.nrv4-is-open > .nrv4-nav-link .nrv4-chevron { transform: rotate(225deg) translate(-1px, -1px); }
.nrv4-chevron-right { transform: rotate(-45deg); }
.nrv4-dropdown-panel, .nrv4-nested-panel { position: absolute; display: none; min-width: 230px; padding: 9px; border: 1px solid var(--line); border-radius: 12px; background: #fff; box-shadow: 0 16px 40px rgba(7, 35, 82, .14); }
.nrv4-dropdown-panel { top: calc(100% - 1px); left: -18px; }
.nrv4-nav-item:hover > .nrv4-dropdown-panel, .nrv4-nav-item:focus-within > .nrv4-dropdown-panel, .nrv4-nav-item.nrv4-is-open > .nrv4-dropdown-panel { display: block; }
.nrv4-dropdown-panel > a, .nrv4-nested-trigger, .nrv4-nested-panel > a { display: flex; width: 100%; align-items: center; justify-content: space-between; gap: 14px; padding: 11px 13px; border: 0; border-radius: 8px; background: transparent; color: var(--text); text-align: left; font-size: 14px; font-weight: 600; cursor: pointer; }
.nrv4-dropdown-panel > a:hover, .nrv4-nested-trigger:hover, .nrv4-nested-panel > a:hover { background: var(--blue-soft); color: var(--blue-strong); }
.nrv4-nested-item { position: relative; }
.nrv4-nested-panel { top: -10px; left: calc(100% + 8px); min-width: 250px; }
.nrv4-nested-item:hover > .nrv4-nested-panel, .nrv4-nested-item:focus-within > .nrv4-nested-panel, .nrv4-nested-item.nrv4-is-open > .nrv4-nested-panel { display: block; }
.nrv4-nested-trigger .nrv4-chevron { flex: 0 0 auto; }
.nrv4-button { display: inline-flex; justify-content: center; align-items: center; gap: 14px; border: 1px solid transparent; border-radius: 10px; font-weight: 700; cursor: pointer; transition: transform .2s ease, background-color .2s ease, box-shadow .2s ease; }
.nrv4-button:hover { transform: translateY(-1px); }
.nrv4-button-primary { color: #fff; background: linear-gradient(100deg, #0878f9, #0068e9); box-shadow: 0 7px 18px rgba(0, 105, 235, .16); }
.nrv4-button-primary:hover { background: linear-gradient(100deg, #006be9, #005ccc); box-shadow: 0 10px 22px rgba(0, 105, 235, .23); }
.nrv4-button span { font-size: 20px; line-height: 1; }
.nrv4-search-toggle { display: inline-flex; align-items: center; justify-content: center; border: 0; background: transparent; color: var(--navy-deep); cursor: pointer; }
.nrv4-search-toggle { flex: 0 0 44px; width: 44px; height: 44px; border-radius: 11px; transition: background-color .2s ease, color .2s ease; }
.nrv4-search-toggle:hover, .nrv4-site-header.nrv4-search-is-open .nrv4-search-toggle { background: #eaf4ff; color: var(--blue); }
.nrv4-search-toggle svg { width: 22px; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; }
.nrv4-search-panel { position: fixed; z-index: 200; top: 0; left: 50%; width: 100vw; height: 70dvh; padding: 52px 0 46px; background: #fff; box-shadow: 0 20px 34px rgba(7,35,82,.16); opacity: 0; pointer-events: none; transform: translate(-50%, -16px); transition: opacity .22s ease, transform .32s cubic-bezier(.22,.61,.36,1); }
.nrv4-site-header.nrv4-search-is-open .nrv4-search-panel { opacity: 1; pointer-events: auto; transform: translate(-50%, 0); }
.nrv4-search-panel-inner { position: relative; }
.nrv4-search-close { position: absolute; top: 0; right: 30px; display: grid; width: 44px; height: 44px; place-items: center; border: 0; border-radius: 10px; background: #eaf4ff; color: var(--navy-deep); font-size: 32px; line-height: 1; cursor: pointer; }
.nrv4-search-close:hover, .nrv4-search-close:focus-visible { background: #d8ebff; color: var(--blue-strong); }
.nrv4-header-search { display: flex; align-items: center; width: min(680px, calc(100% - 110px)); height: 62px; margin-left: 30px; border-bottom: 1px solid #b9c9dc; color: var(--navy-deep); transition: border-color .2s ease; }
.nrv4-header-search:focus-within { border-color: var(--blue); }
.nrv4-header-search svg { flex: 0 0 28px; width: 28px; margin-right: 13px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; }
.nrv4-header-search input { width: 100%; min-width: 0; padding: 0; border: 0; outline: 0; background: transparent; color: var(--navy-deep); font-size: 25px; font-weight: 600; letter-spacing: -.03em; }
.nrv4-header-search input::placeholder { color: #7183a2; }
.nrv4-search-quick-links { margin: 31px 0 0 41px; }
.nrv4-search-quick-links p { margin: 0 0 12px; color: #8494ad; font-size: 11px; font-weight: 700; letter-spacing: .11em; }
.nrv4-search-quick-links a { display: block; width: max-content; padding: 5px 0; color: #304d78; font-size: 15px; font-weight: 700; }
.nrv4-search-quick-links a::before { margin-right: 10px; color: var(--blue); content: "→"; }
body.nrv4-search-is-open main { filter: blur(6px); transition: filter .32s ease; }
body:not(.nrv4-search-is-open) main { transition: filter .32s ease; }
.nrv4-mobile-menu-toggle { display: none; }

/* Services mega menu */
.nrv4-has-mega-menu { position: static; }
.nrv4-mega-menu { position: absolute; top: calc(100% - 1px); left: 50%; display: none; width: min(1100px, calc(100vw - 40px)); max-width: calc(100vw - 40px); min-height: 320px; overflow: hidden; grid-template-columns: minmax(230px, 300px) minmax(0, 1fr); border: 1px solid var(--line); border-radius: 18px; background: rgba(255,255,255,.985); box-shadow: 0 22px 58px rgba(7, 35, 82, .18); transform: translateX(-50%); }
.nrv4-nav-item.nrv4-is-open > .nrv4-mega-menu, .nrv4-nav-item:hover > .nrv4-mega-menu, .nrv4-nav-item:focus-within > .nrv4-mega-menu { display: grid; }
.nrv4-mega-tabs { display: flex; flex-direction: column; gap: 8px; padding: 22px 18px; background: #f1f7fe; }
.nrv4-mega-tab { display: flex; align-items: center; gap: 14px; width: 100%; min-height: 76px; padding: 14px; border: 1px solid transparent; border-radius: 12px; background: transparent; text-align: left; font-size: 15px; font-weight: 700; cursor: pointer; transition: background .18s ease, color .18s ease, border-color .18s ease; }
.nrv4-mega-tab:hover, .nrv4-mega-tab.is-active { border-color: #d2e7ff; background: #fff; color: var(--blue-strong); }
.nrv4-mega-tab small { display: block; margin-top: 4px; color: var(--muted); font-size: 11px; font-weight: 500; line-height: 1.35; }
.nrv4-mega-tab-icon { flex: 0 0 40px; display: grid; width: 40px; height: 40px; place-items: center; border-radius: 10px; background: #e2f0ff; color: var(--blue); }
.nrv4-mega-tab-icon svg { width: 24px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.nrv4-mega-content { min-width: 0; padding: 27px 30px 25px; }
.nrv4-mega-content-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; padding-bottom: 20px; }
.nrv4-eyebrow { margin: 0 0 6px; color: var(--blue); font-size: 11px; font-weight: 700; letter-spacing: .13em; }
.nrv4-mega-content h2 { margin: 0; color: var(--navy-deep); font-size: 21px; line-height: 1.25; }
.nrv4-mega-content-heading p:not(.nrv4-eyebrow) { margin: 4px 0 0; color: var(--muted); font-size: 13px; }
.nrv4-mega-all-link { flex: 0 0 auto; color: var(--blue-strong); font-size: 13px; font-weight: 700; }
.nrv4-mega-all-link span { margin-left: 5px; font-size: 18px; }
.nrv4-service-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 3px 14px; }
.nrv4-service-link { display: flex; align-items: flex-start; gap: 11px; min-height: 70px; padding: 11px 7px; border-radius: 9px; }
.nrv4-service-link:hover { background: #f4f9ff; }
.nrv4-service-link-icon { flex: 0 0 27px; display: grid; width: 27px; height: 27px; place-items: center; border-radius: 7px; background: #eaf4ff; color: var(--blue); }
.nrv4-service-link-icon svg { width: 17px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.nrv4-service-link strong { display: block; color: var(--text); font-size: 13px; line-height: 1.4; }
.nrv4-service-link small { display: block; margin-top: 3px; color: var(--muted); font-size: 11px; line-height: 1.35; }

/* Hero */
.nrv4-hero { position: relative; isolation: isolate; min-height: 600px; overflow: hidden; background: #eef6ff; }
.nrv4-hero-background { position: absolute; z-index: -1; top: 0; bottom: 0; left: 50%; width: min(var(--container), 100%); max-width: 100%; background-image: linear-gradient(90deg, rgba(245,250,255,.9) 0%, rgba(245,250,255,.62) 42%, rgba(240,248,255,.04) 68%), var(--nrv4-hero-image, url("assets/images/1.hero-background-labeled.png")); background-position: center, right center; background-repeat: no-repeat; background-size: cover, cover; transform: translateX(-50%); }
.nrv4-hero-content { display: flex; align-items: center; min-height: 600px; padding: 36px clamp(24px, 2.8vw, 40px) 44px; }
.nrv4-hero-copy { width: min(650px, 53%); }
.nrv4-hero-kicker { display: inline-flex; align-items: center; gap: 10px; margin: 0 0 24px; padding: 8px 17px; border: 1px solid rgba(155, 202, 244, .42); border-radius: 999px; background: rgba(222, 240, 255, .78); color: var(--blue-strong); font-size: 12px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.nrv4-kicker-dot { width: 9px; height: 9px; border-radius: 50%; background: #ffa500; box-shadow: 0 0 0 4px rgba(255,165,0,.12); }
.nrv4-hero h1 { max-width: 710px; margin: 0; color: #091344; font-size: clamp(42px, 4.6vw, 66px); font-weight: 700; letter-spacing: -.055em; line-height: 1.03; }
.nrv4-hero h1 > .nrv4-hero-growth-highlight { position: relative; color: var(--blue); white-space: nowrap; }
.nrv4-hero-description { max-width: 640px; margin: 22px 0 0; color: #6078a8; font-size: clamp(17px, 1.55vw, 21px); font-weight: 500; line-height: 1.55; }
.nrv4-hero-actions { display: flex; align-items: center; gap: 25px; margin-top: 24px; }
.nrv4-button-large { min-height: 60px; padding: 0 27px; font-size: 17px; }
.nrv4-video-link { display: inline-flex; align-items: center; gap: 12px; color: var(--blue-strong); font-size: 15px; font-weight: 700; white-space: nowrap; }
.nrv4-play-button { display: grid; width: 50px; height: 50px; place-items: center; border-radius: 50%; background: #dceeff; transition: background .2s ease, transform .2s ease; }
.nrv4-video-link:hover .nrv4-play-button { background: #c7e3ff; transform: scale(1.05); }
.nrv4-play-button svg { width: 22px; fill: var(--blue); }
.nrv4-intro-video-dialog { width: min(900px, calc(100vw - 32px), calc((100dvh - 104px) * 1.77778)); max-width: none; max-height: calc(100dvh - 32px); padding: 0; overflow: hidden; border: 0; border-radius: 16px; background: #fff; box-shadow: 0 24px 80px rgba(5, 25, 55, .35); }
.nrv4-intro-video-dialog::backdrop { background: rgba(5, 24, 54, .76); }
.nrv4-intro-video-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 72px; padding: 12px 18px 12px 22px; }
.nrv4-intro-video-header h2 { margin: 0; color: var(--navy-deep); font-size: 18px; line-height: 1.3; }
.nrv4-intro-video-close { display: grid; flex: 0 0 38px; width: 38px; height: 38px; place-items: center; border: 0; border-radius: 9px; background: #eaf4ff; color: var(--navy-deep); font-size: 27px; line-height: 1; cursor: pointer; }
.nrv4-intro-video-close:hover { background: #d9ebff; }
.nrv4-intro-video-frame { aspect-ratio: 16 / 9; background: #071d49; }
.nrv4-intro-video-frame iframe { display: block; width: 100%; height: 100%; border: 0; }
body.intro-video-is-open { overflow: hidden; }
@media (max-width: 760px) {
  .nrv4-intro-video-dialog { width: min(calc(100vw - 20px), calc((100dvh - 84px) * 1.77778)); border-radius: 12px; }
  .nrv4-intro-video-header { min-height: 60px; padding: 9px 11px 9px 14px; }
  .nrv4-intro-video-header h2 { font-size: 15px; }
  .nrv4-intro-video-close { flex-basis: 32px; width: 32px; height: 32px; }
}

/* About NR Global */
.nrv4-about-section { padding: 96px 0 74px; background: #fff; }
.nrv4-about-layout { display: grid; grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr); align-items: center; gap: clamp(38px, 5vw, 72px); }
.nrv4-about-copy { max-width: 590px; }
.nrv4-about-kicker { display: inline-flex; align-items: center; gap: 10px; margin: 0 0 22px; padding: 9px 17px; border: 1px solid #d7eaff; border-radius: 999px; background: #eef7ff; color: var(--blue-strong); font-size: 13px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.nrv4-about-mark { display: grid; width: 23px; height: 23px; place-items: center; border-radius: 50%; background: #fff; color: #12a6d6; font-size: 15px; }
.nrv4-about-copy h2 { margin: 0; color: var(--navy-deep); font-size: clamp(36px, 3.35vw, 49px); font-weight: 700; letter-spacing: -.045em; line-height: 1.12; }
.nrv4-about-copy h2 span { color: var(--blue); }
.nrv4-about-description { max-width: 570px; margin: 23px 0 0; color: #687da6; font-size: 18px; font-weight: 500; line-height: 1.65; }
.nrv4-about-cta { min-height: 56px; margin-top: 28px; padding: 0 24px; font-size: 16px; }
.nrv4-about-cta span { font-size: 21px; }
.nrv4-about-video-frame { overflow: hidden; width: 100%; aspect-ratio: 16 / 9; border: 1px solid rgba(8, 120, 249, .2); border-radius: 20px; background: #07183f; box-shadow: 0 20px 48px rgba(8, 120, 249, .2), 0 0 28px rgba(8, 120, 249, .12); }
.nrv4-about-video-frame iframe, .nrv4-about-video-frame video { display: block; width: 100%; height: 100%; border: 0; object-fit: cover; }

/* Online system diagram */
.nrv4-system-section { padding: 40px 0 44px; border-top: 1px solid #edf5fd; border-bottom: 1px solid #edf5fd; background-color: #f7fbff; background-image: url("assets/system-section-bg.png"); background-position: center; background-repeat: no-repeat; background-size: cover; }
.nrv4-system-section > .nrv4-container { width: min(1720px, calc(100% - 56px)); }
.nrv4-system-heading { max-width: 1500px; margin: 0 auto 32px; text-align: center; }
.nrv4-system-kicker { margin: 0 0 10px; color: #4e86f7; font-size: 16px; font-weight: 500; letter-spacing: .08em; text-transform: uppercase; }
.nrv4-system-heading h2 { margin: 0; color: var(--navy-deep); font-size: clamp(32px, 3.15vw, 48px); font-weight: 700; letter-spacing: -.035em; line-height: 1.15; }
.nrv4-system-heading > p:last-child { max-width: 1500px; margin: 17px auto 0; color: #6078a8; font-size: clamp(17px, 1.45vw, 22px); line-height: 1.5; }
.nrv4-system-diagram { position: relative; display: grid; max-width: 1020px; min-height: 486px; grid-template-columns: repeat(3, minmax(0, 1fr)); grid-template-rows: 130px 46px 150px 30px 130px; column-gap: 24px; margin-inline: auto; }
.nrv4-system-connectors { position: absolute; z-index: 0; inset: 0; width: 100%; height: 100%; overflow: visible; fill: none; stroke: #b9cfe8; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; pointer-events: none; }
.nrv4-system-connectors-mobile { display: none; }
.nrv4-pillar-card { position: relative; z-index: 1; display: flex; min-width: 0; align-items: center; flex-direction: column; justify-content: center; padding: 12px 16px; border: 1.5px solid #d4e5f8; border-radius: 17px; background: rgba(255,255,255,.98); box-shadow: 0 9px 22px rgba(31, 86, 148, .08); text-align: center; }
.nrv4-pillar-card.nrv4-tree-content { grid-column: 2; grid-row: 1; }
.nrv4-pillar-card.nrv4-tree-seo { grid-column: 1; grid-row: 3; }
.nrv4-pillar-card.nrv4-tree-website { grid-column: 2; grid-row: 3; }
.nrv4-pillar-card.nrv4-tree-ads { grid-column: 3; grid-row: 3; }
.nrv4-pillar-card.nrv4-tree-crm { grid-column: 2; grid-row: 5; }
.nrv4-pillar-card.nrv4-is-featured { border-color: #a9d0fb; background: linear-gradient(180deg, #fff, #f6fbff); box-shadow: 0 15px 34px rgba(8, 120, 249, .14); }
.nrv4-pillar-number { color: #1763c6; font-size: 11px; font-weight: 700; letter-spacing: .08em; }
.nrv4-pillar-icon { display: grid; width: 36px; height: 36px; margin: 5px 0 6px; place-items: center; }
.nrv4-pillar-icon img { display: block; width: 100%; height: 100%; object-fit: contain; }
.nrv4-tree-seo .nrv4-pillar-icon { width: 23px; height: 28px; }
.nrv4-tree-website .nrv4-pillar-icon { width: 40px; height: 40px; }
.nrv4-pillar-card h3 { margin: 0; color: var(--navy-deep); font-size: clamp(14px, 1.05vw, 17px); font-weight: 700; line-height: 1.25; text-transform: uppercase; }
.nrv4-pillar-card p { margin: 5px 0 0; color: #6078a8; font-size: clamp(10px, .82vw, 12px); font-style: italic; font-weight: 500; line-height: 1.3; text-transform: uppercase; }
.nrv4-system-more { display: flex; width: fit-content; align-items: center; gap: 10px; margin: 22px auto 0; color: var(--blue-strong); font-size: 14px; font-weight: 700; }
.nrv4-system-more span { font-size: 20px; transition: transform .2s ease; }
.nrv4-system-more:hover span { transform: translateX(4px); }

/* Featured projects */
.nrv4-projects-section { padding: 70px 0 98px; background: linear-gradient(180deg, #f7fbff 0%, #fff 100%); }
.nrv4-projects-heading { max-width: 980px; margin: 0 auto 38px; text-align: center; }
.nrv4-projects-kicker { margin: 0 0 8px; color: #3478ed; font-size: 16px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; }
.nrv4-projects-heading h2 { margin: 0; color: var(--navy-deep); font-size: clamp(30px, 3vw, 44px); font-weight: 700; letter-spacing: -.035em; line-height: 1.17; }
.nrv4-projects-heading > p:not(.nrv4-projects-kicker) { margin: 14px 0 0; color: #687da6; font-size: 18px; line-height: 1.5; }
.nrv4-projects-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.nrv4-project-card[hidden] { display: none !important; }
.nrv4-project-card-featured { grid-column: 1 / -1; width: calc((100% - 14px) / 2); justify-self: center; }
.nrv4-project-card { display: grid; grid-template-columns: minmax(0, .92fr) minmax(0, 1fr); align-items: center; gap: 22px; min-width: 0; min-height: 270px; padding: 14px; border: 1px solid #d7e7fa; border-radius: 16px; background: #fff; box-shadow: 0 8px 25px rgba(29, 91, 157, .06); }
.nrv4-project-visual { position: relative; overflow: hidden; width: 100%; aspect-ratio: 1.36 / 1; border-radius: 12px; background: #d9ebff; }
.nrv4-project-visual.nrv4-has-thumbnail { height: auto; aspect-ratio: 3 / 2; }
.nrv4-project-visual svg { display: block; width: 100%; height: 100%; object-fit: cover; }
.nrv4-project-visual.nrv4-has-thumbnail > svg { display: none; }
.nrv4-project-thumbnail { display: block; width: 100%; height: 100%; object-fit: cover; transition: transform .4s var(--motion-ease); }
.nrv4-project-image-action { display: none; }
.nrv4-project-copy { min-width: 0; padding: 2px 8px 2px 0; }
.nrv4-project-category { display: inline-flex; max-width: 100%; align-items: center; gap: 9px; min-height: 36px; padding: 4px 14px 4px 7px; border-radius: 999px; background: #eef6ff; color: var(--blue-strong); font-size: 14px; font-weight: 700; line-height: 1.25; }
.nrv4-category-icon { flex: 0 0 29px; display: grid; width: 29px; height: 29px; place-items: center; border-radius: 50%; background: #fff; font-size: 20px; font-weight: 700; }
.nrv4-category-website { color: #1686e8; }
.nrv4-category-seo { color: #3b91da; }
.nrv4-category-content { color: #e4a126; }
.nrv4-category-system { color: #0878f9; }
.nrv4-project-copy h3 { margin: 12px 0 13px; color: var(--navy-deep); font-size: clamp(20px, 1.8vw, 28px); font-weight: 700; line-height: 1.2; }
.nrv4-project-detail { margin-top: 10px; padding-left: 13px; border-left: 3px solid var(--blue); }
.nrv4-project-copy h3 + .nrv4-project-detail { border-left-color: #ef4444; }
.nrv4-project-detail strong { display: block; color: var(--navy-deep); font-size: 15px; line-height: 1.3; }
.nrv4-project-detail p { margin: 3px 0 0; color: #647ba5; font-size: 14px; line-height: 1.4; }
.nrv4-project-detail-button { min-height: 42px; margin-top: 16px; padding: 0 17px; font-size: 14px; }
.nrv4-project-detail-button:focus-visible { outline: 3px solid rgba(8, 120, 249, .32); outline-offset: 3px; }
/* On desktop, size the reader to one landscape PDF page plus its header. */
.nrv4-pdf-dialog { width: min(1100px, calc((88dvh - 72px) * 1.66613), calc(100vw - 36px)); height: min(88dvh, calc((100vw - 36px) * .60019 + 72px), 732px); max-width: none; max-height: none; padding: 0; overflow: hidden; border: 0; border-radius: 16px; background: #fff; box-shadow: 0 24px 80px rgba(5, 25, 55, .3); }
.nrv4-pdf-dialog[open] { display: flex; flex-direction: column; }
.nrv4-pdf-dialog::backdrop { background: rgba(5, 24, 54, .72); }
.nrv4-pdf-dialog-header { display: flex; flex: 0 0 72px; align-items: center; justify-content: space-between; gap: 16px; padding: 10px 16px 10px 22px; border-bottom: 1px solid #dbe8f5; background: #f8fbff; }
.nrv4-pdf-dialog-heading { min-width: 0; }
.nrv4-pdf-dialog-eyebrow { display: block; margin-bottom: 3px; color: var(--blue-strong); font-size: 10px; font-weight: 800; letter-spacing: .13em; }
.nrv4-pdf-dialog-header h2 { margin: 0; overflow: hidden; color: var(--navy-deep); font-size: 17px; line-height: 1.2; text-overflow: ellipsis; white-space: nowrap; }
.nrv4-pdf-dialog-actions { display: flex; align-items: center; gap: 14px; }
.nrv4-pdf-open-tab { display: inline-flex; align-items: center; gap: 5px; padding: 8px 10px; border: 1px solid #cfe1f7; border-radius: 8px; background: #fff; color: var(--blue-strong); font-size: 12px; font-weight: 700; line-height: 1; text-decoration: none; white-space: nowrap; }
.nrv4-pdf-open-tab:hover { background: #eaf4ff; }
.nrv4-pdf-close { display: grid; flex: 0 0 36px; width: 36px; height: 36px; place-items: center; border: 0; border-radius: 9px; background: #eaf4ff; color: var(--navy-deep); font-size: 25px; line-height: 1; cursor: pointer; }
.nrv4-pdf-close:hover { background: #d9ebff; }
.nrv4-pdf-pages { flex: 1 1 auto; min-height: 0; overflow-y: auto; overscroll-behavior: contain; -webkit-overflow-scrolling: touch; background: #fff; scrollbar-width: thin; }
.nrv4-pdf-page { display: grid; width: 100%; place-items: center; background: #fff; color: #647ba5; font-size: 14px; }
.nrv4-pdf-page + .nrv4-pdf-page { margin-top: 8px; }
.nrv4-pdf-page canvas { display: block; width: 100%; height: auto; }
@media (max-width: 760px) {
  .nrv4-pdf-dialog { width: calc(100vw - 16px); height: min(calc((100vw - 16px) * var(--pdf-three-page-ratio, 1.80057) + 96px), calc(100dvh - 16px)); border-radius: 12px; }
  .nrv4-pdf-dialog-header { flex-basis: 80px; gap: 8px; padding: 9px 11px 9px 14px; }
  .nrv4-pdf-dialog-header h2 { font-size: 15px; }
  .nrv4-pdf-dialog-actions { flex: 0 0 auto; gap: 7px; }
  .nrv4-pdf-open-tab { padding: 7px; font-size: 11px; }
  .nrv4-pdf-close { flex-basis: 32px; width: 32px; height: 32px; }
}

/* Why NR Global */
.nrv4-why-section { padding: 86px 0 92px; background: #fff; }
.nrv4-why-heading { max-width: 1120px; margin: 0 auto 30px; text-align: center; }
.nrv4-why-kicker { margin: 0 0 8px; color: #3478ed; font-size: 16px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; }
.nrv4-why-heading h2 { margin: 0; color: var(--navy-deep); font-size: clamp(30px, 3vw, 44px); font-weight: 700; letter-spacing: -.035em; line-height: 1.16; }
.nrv4-why-heading > p:last-child { margin: 14px 0 0; color: #687da6; font-size: 18px; line-height: 1.5; }
.nrv4-why-panel { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); padding: 34px 18px; border-radius: 22px; background: #f3f8ff; }
.nrv4-why-item { min-width: 0; padding: 0 30px; border-right: 1px solid #d3e4fa; }
.nrv4-why-item:last-child { border-right: 0; }
.nrv4-why-icon { display: grid; width: 70px; height: 70px; margin-bottom: 15px; place-items: center; border-radius: 16px; background: #e0efff; color: var(--blue); }
.nrv4-why-icon svg { width: 46px; fill: none; stroke: currentColor; stroke-width: 2.5; stroke-linecap: round; stroke-linejoin: round; }
.nrv4-why-icon img { width:46px; height:46px; object-fit:contain; }
.nrv4-why-item h3 { max-width: 260px; margin: 0; color: var(--navy-deep); font-size: clamp(18px, 1.7vw, 26px); font-weight: 700; line-height: 1.3; }
.nrv4-why-item p { max-width: 270px; margin: 9px 0 0; color: #7187b0; font-size: 17px; line-height: 1.5; }

/* Client testimonials */
.nrv4-testimonials-section { position: relative; overflow: hidden; padding: 78px 0 86px; background: #f6faff; }
.nrv4-testimonials-section::before, .nrv4-testimonials-section::after { position: absolute; z-index: 0; width: 230px; height: 230px; border: 1px solid rgba(8,120,249,.07); border-radius: 50%; content: ""; pointer-events: none; }
.nrv4-testimonials-section::before { top: -155px; left: -85px; box-shadow: 0 0 0 25px rgba(8,120,249,.018), 0 0 0 55px rgba(8,120,249,.015); }
.nrv4-testimonials-section::after { right: -130px; bottom: -165px; box-shadow: 0 0 0 25px rgba(8,120,249,.018), 0 0 0 55px rgba(8,120,249,.015); }
.nrv4-testimonials-section > .nrv4-container { position: relative; z-index: 1; }
.nrv4-testimonials-heading { margin: 0 0 36px; text-align: center; }
.nrv4-testimonials-heading h2 { margin: 0; color: var(--navy-deep); font-size: clamp(30px, 3vw, 44px); font-weight: 700; letter-spacing: -.035em; line-height: 1.2; }
.nrv4-testimonials-heading h2 span { color: var(--blue-strong); }
.nrv4-testimonials-carousel { position: relative; }
.nrv4-testimonial-swiper { overflow: hidden; width: 100%; padding: 0 0 8px; }
.nrv4-testimonial-swiper .swiper-wrapper { align-items: stretch; }
.nrv4-testimonial-card { box-sizing: border-box; height: auto; min-width: 0; padding: 20px 18px 18px; border: 1px solid #d7e7fa; border-radius: 16px; background: rgba(255,255,255,.96); box-shadow: 0 10px 28px rgba(27, 83, 142, .07); text-align: center; }
.nrv4-client-brand { display: flex; min-height: 92px; align-items: center; flex-direction: column; justify-content: center; gap: 6px; color: #1b4e9a; }
.nrv4-client-brand img { display: block; width: 76px; height: 76px; object-fit: contain; }
.nrv4-client-brand img.nrv4-logo-wide { width: min(100%, 180px); height: 72px; }
.nrv4-brand-emblem { display: grid; width: 45px; height: 45px; place-items: center; border: 2px solid currentColor; border-radius: 50%; font-size: 25px; line-height: 1; }
.nrv4-client-brand strong { display: flex; align-items: baseline; gap: 4px; font-family: Georgia, serif; font-size: 17px; letter-spacing: .025em; }
.nrv4-client-brand em { color: #e16b2e; font-style: normal; }
.nrv4-client-brand small { display: block; font-size: 8px; font-weight: 500; letter-spacing: .07em; }
.nrv4-brand-saola { color: #705aab; }
.nrv4-brand-saola .nrv4-brand-emblem { border-color: #e4a531; color: #e4a531; }
.nrv4-brand-lua { color: #739674; }
.nrv4-brand-lua .nrv4-brand-emblem { border: 0; font-size: 44px; }
.nrv4-brand-lua strong { flex-direction: column; align-items: center; gap: 0; font-family: Arial, sans-serif; font-size: 12px; letter-spacing: .07em; }
.nrv4-client-type { margin: 7px 0 0; color: var(--navy-deep); font-size: 18px; font-weight: 700; }
.nrv4-client-name { margin: 2px 0 0; color: #6078a8; font-size: 15px; }
.nrv4-testimonial-quote { position: relative; min-height: 145px; margin: 22px 0 16px; padding: 15px 5px 0; border-top: 1px solid #e4edf8; color: #263c68; text-align: left; }
.nrv4-testimonial-quote > span { position: absolute; top: 5px; left: 3px; color: #a8d3ff; font-family: Georgia, serif; font-size: 36px; font-weight: 700; line-height: 1; }
.nrv4-testimonial-quote p { display: -webkit-box; overflow: hidden; margin: 14px 0 0; -webkit-box-orient: vertical; -webkit-line-clamp: 4; font-size: 15px; line-height: 1.6; }
.nrv4-testimonial-summary p { margin-top: 0; }
.nrv4-testimonial-poster { position: relative; isolation: isolate; overflow: hidden; display: flex; width: 100%; aspect-ratio: 16 / 8.1; align-items: center; justify-content: flex-end; flex-direction: column; padding: 16px 18px 12px; border-radius: 12px; background: radial-gradient(ellipse at 25% 120%, #1163a5 0%, transparent 48%), linear-gradient(135deg, #07579a 0%, #063c78 52%, #06143c 100%); color: #fff; text-align: left; }
.nrv4-testimonial-video { position: relative; isolation: isolate; overflow: hidden; display: block; width: 100%; aspect-ratio: 16 / 8.1; border-radius: 12px; background: #06143c; box-shadow: 0 8px 24px rgba(8, 120, 249, .16); }
.nrv4-testimonial-video img { display: block; width: 100%; height: 100%; object-fit: cover; transition: transform .25s ease; }
.nrv4-testimonial-video:hover img { transform: scale(1.03); }
.nrv4-testimonial-video .nrv4-poster-play { z-index: 1; top: 50%; left: 50%; transform: translate(-50%, -50%); }
.nrv4-testimonial-poster::before { position: absolute; z-index: -1; top: -45%; left: -15%; width: 58%; aspect-ratio: 1; border: 1px solid rgba(48, 158, 241, .18); border-radius: 50%; box-shadow: 0 0 0 23px rgba(31,139,226,.09), 0 0 0 48px rgba(31,139,226,.06); content: ""; }
.nrv4-poster-heading { position: absolute; top: 17px; right: 17px; color: #fff; font-size: clamp(16px, 1.5vw, 22px); font-weight: 700; line-height: 1.22; text-align: right; text-transform: uppercase; text-shadow: 0 2px 4px rgba(0,0,0,.25); }
.nrv4-poster-play { position: absolute; top: 50%; left: 50%; display: block; width: 60px; aspect-ratio: 256 / 180; transform: translate(-50%, -42%); }
.nrv4-poster-play svg { display: block; width: 100%; height: 100%; }
.nrv4-poster-person { display: flex; width: 100%; align-items: center; gap: 10px; margin-top: auto; }
.nrv4-poster-person > b { display: grid; width: 47px; height: 47px; place-items: center; border: 2px solid rgba(255,255,255,.9); border-radius: 50%; background: linear-gradient(145deg, #d9ebff, #629ed1); color: #07366e; font-size: 15px; }
.nrv4-poster-person strong, .nrv4-poster-person small { display: block; }
.nrv4-poster-person strong { font-size: 13px; }
.nrv4-poster-person small { margin-top: 2px; color: #d2e8ff; font-size: 10px; }
.nrv4-poster-client { position: absolute; right: 17px; bottom: 19px; max-width: 43%; color: #d7eaff; font-size: 10px; font-weight: 700; letter-spacing: .08em; text-align: right; }
.nrv4-poster-saola { background: radial-gradient(ellipse at 20% 120%, #245fa4 0%, transparent 48%), linear-gradient(135deg, #0a5a9e 0%, #103b79 52%, #090f38 100%); }
.nrv4-poster-lua { background: radial-gradient(ellipse at 20% 120%, #1d7186 0%, transparent 48%), linear-gradient(135deg, #0b5f83 0%, #103d75 52%, #07143e 100%); }
.nrv4-testimonial-arrow { position: absolute; z-index: 3; top: 50%; display: grid; width: 46px; height: 46px; place-items: center; border: 1px solid #cfe3fb; border-radius: 50%; background: rgba(255,255,255,.96); color: var(--blue); box-shadow: 0 5px 18px rgba(21,86,160,.14); cursor: pointer; transform: translateY(-50%); transition: background .2s ease, color .2s ease, border-color .2s ease, box-shadow .2s ease; }
.nrv4-testimonial-arrow:hover { background: var(--blue); color: #fff; }
.nrv4-testimonial-arrow:hover { border-color: var(--blue); box-shadow: 0 8px 22px rgba(8,120,249,.25); }
.nrv4-testimonial-arrow svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.nrv4-testimonial-prev { left: -27px; }
.nrv4-testimonial-next { right: -27px; }

/* Standalone services */
.nrv4-services-section { position: relative; isolation: isolate; overflow: hidden; padding: 82px 0 74px; background: linear-gradient(135deg, #f7fbff 0%, #fff 46%, #f8fbff 100%); }
.nrv4-services-container { position: relative; z-index: 1; width: min(1536px, calc(100% - 56px)); }
.nrv4-services-decoration { position: absolute; z-index: -1; width: 360px; aspect-ratio: 1; border-radius: 50%; background: #eaf5ff; pointer-events: none; }
.nrv4-services-decoration-top { top: -260px; left: -155px; }
.nrv4-services-decoration-bottom { right: -220px; bottom: -300px; width: 430px; }
.nrv4-services-heading { margin: 0 0 34px; text-align: center; }
.nrv4-services-heading h2 { margin: 0; color: var(--navy-deep); font-size: clamp(31px, 3.25vw, 48px); font-weight: 700; letter-spacing: -.04em; line-height: 1.2; }
.nrv4-services-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); align-items: stretch; gap: 22px; }
.nrv4-service-card { width: 100%; min-width: 0; height: 240px; border: 1px solid #cfe5fb; border-radius: 17px; background: #fff; box-shadow: 0 8px 23px rgba(33, 110, 190, .07); text-align: center; perspective: 1000px; transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease; }
.nrv4-service-card:hover { transform: translateY(-3px); border-color: #9dccfa; box-shadow: 0 13px 30px rgba(33, 110, 190, .12); }
.nrv4-service-card-inner { position: relative; width: 100%; height: 100%; transform-style: preserve-3d; transition: transform .65s cubic-bezier(.2,.7,.2,1); }
.nrv4-service-card.is-flipped .nrv4-service-card-inner { transform: rotateY(180deg); }
.nrv4-service-card-face { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; padding: 14px 16px; border-radius: 16px; backface-visibility: hidden; -webkit-backface-visibility: hidden; }
.nrv4-service-card-front { justify-content: center; background: #fff; }
.nrv4-service-card-face.nrv4-service-card-back { justify-content: flex-start; overflow-y: auto; background: linear-gradient(145deg, #eef7ff, #fff); transform: rotateY(180deg); scrollbar-width: thin; }
.nrv4-service-card-back > * { flex-shrink: 0; }
.nrv4-service-card-back h3 { width: 100%; padding-inline: 32px; }
.nrv4-service-card-flip-trigger { position: absolute; inset: 0; width: 100%; border: 0; border-radius: inherit; background: transparent; cursor: pointer; }
.nrv4-service-card-flip-trigger:focus-visible { outline: 3px solid var(--blue); outline-offset: -5px; }
.nrv4-service-card-back-trigger { position: absolute; top: 12px; right: 12px; display: grid; width: 32px; height: 32px; place-items: center; border: 1px solid #cfe5fb; border-radius: 8px; background: #fff; color: var(--blue-strong); font-size: 19px; cursor: pointer; }
.nrv4-service-card-back-trigger:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
.nrv4-service-card-icon { display: grid; width: 58px; height: 58px; flex: 0 0 58px; place-items: center; border-radius: 14px; background: #eef7ff; color: var(--blue); }
.nrv4-service-card-icon svg { width: 54px; height: 54px; fill: none; stroke: currentColor; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
.nrv4-service-card-icon .material-symbols-rounded { font-size: 34px; line-height: 1; }
.nrv4-service-card-icon img { display:block; width:42px; height:42px; object-fit:contain; }
.nrv4-service-card h3 { margin: 9px 0 0; color: var(--navy-deep); font-size: clamp(17px, 1.3vw, 20px); font-weight: 700; letter-spacing: -.025em; line-height: 1.25; }
.nrv4-service-card p { max-width: 285px; margin: 10px auto 0; color: #62789f; font-size: 15px; font-weight: 500; line-height: 1.45; }
.nrv4-service-card .nrv4-service-card-tagline { margin-top: 6px; color: var(--navy-deep); font-size: 13px; font-weight: 700; }
.nrv4-service-card .nrv4-service-card-description { margin: 10px auto 0; }
.nrv4-service-card-more { display: inline-flex; align-items: center; gap: 6px; margin-top: 15px; color: var(--blue-strong); font-weight: 700; }
.nrv4-service-card-more:hover, .nrv4-service-card-more:focus-visible { text-decoration: underline; }
.nrv4-services-note { display: flex; width: fit-content; min-height: 48px; align-items: center; gap: 13px; margin: 22px auto 0; padding: 7px 22px; border-radius: 999px; background: #edf6ff; color: #143e79; font-size: 16px; font-weight: 600; text-align: center; }
.nrv4-services-note > span { display: grid; width: 28px; height: 28px; flex: 0 0 28px; place-items: center; border-radius: 7px; background: var(--blue); color: #fff; }
.nrv4-services-note svg { width: 19px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }

/* Customer logo wall */
.nrv4-customers-section { position: relative; isolation: isolate; overflow: hidden; padding: 66px 0 32px; background: radial-gradient(ellipse at 50% 48%, #fff 0%, #fff 58%, #f5faff 100%); }
.nrv4-customers-container { position: relative; z-index: 1; width: min(1536px, calc(100% - 56px)); }
.nrv4-customers-section h2 { margin: 0 0 30px; color: var(--navy-deep); font-size: clamp(30px, 3vw, 44px); font-weight: 700; letter-spacing: -.035em; line-height: 1.2; text-align: center; }
.nrv4-customers-section h2 span { color: var(--blue-strong); }
.nrv4-customer-logos { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); align-items: center; column-gap: 24px; row-gap: 14px; }
.nrv4-customer-logo { display: flex; min-width: 0; min-height: 104px; align-items: center; justify-content: center; flex-direction: column; gap: 2px; padding: 9px 8px; color: #176fbb; text-align: center; transition: transform .2s ease, filter .2s ease; }
.nrv4-customer-logo:hover { filter: saturate(1.12); transform: translateY(-2px); }
.nrv4-customer-logo strong { display: block; font-size: clamp(16px, 1.55vw, 24px); font-weight: 700; letter-spacing: -.04em; line-height: 1.04; }
.nrv4-customer-logo small { display: block; margin-top: 3px; font-size: 9px; font-weight: 600; letter-spacing: .03em; line-height: 1.2; }
.nrv4-customer-thanhthuy { color: #9b5825; }
.nrv4-customer-thanhthuy .nrv4-customer-symbol { display: grid; width: 58px; height: 58px; place-items: center; border: 1px solid currentColor; border-radius: 50%; font-size: 31px; }
.nrv4-customer-thanhthuy strong { font-family: Georgia, serif; font-size: 17px; font-style: italic; }
.nrv4-customer-himalaya { color: #129dd4; }
.nrv4-customer-himalaya .nrv4-himalaya-mark { font-size: 62px; font-weight: 700; line-height: .8; letter-spacing: -.15em; }
.nrv4-customer-himalaya strong:last-child { font-size: clamp(16px, 1.45vw, 23px); font-weight: 500; letter-spacing: .01em; }
.nrv4-customer-bien { color: #d37a08; }
.nrv4-customer-bien strong { padding: 3px 7px; border: 2px solid currentColor; font-size: clamp(15px, 1.4vw, 21px); letter-spacing: .01em; }
.nrv4-customer-bien small { font-size: 10px; }
.nrv4-customer-ajk { color: #4e655b; }
.nrv4-customer-ajk strong { color: #81858a; font-size: clamp(16px, 1.6vw, 24px); }
.nrv4-customer-ajk strong span { color: #df5339; }
.nrv4-customer-ajk small { text-align: right; }
.nrv4-customer-toigian { color: #0e91d1; }
.nrv4-customer-toigian .nrv4-simple-mark { font-size: 58px; line-height: .78; }
.nrv4-customer-toigian strong:last-child { font-size: 11px; letter-spacing: -.01em; }
.nrv4-customer-tindung { color: #c28300; }
.nrv4-customer-tindung .nrv4-dragon-mark { font-size: 51px; line-height: .82; }
.nrv4-customer-tindung strong:last-child { font-size: 12px; }
.nrv4-customer-haungo { color: #a44836; }
.nrv4-customer-haungo .nrv4-house-mark { font-size: 62px; line-height: .85; }
.nrv4-customer-haungo strong:last-child { font-size: 11px; font-weight: 500; }
.nrv4-customer-dailoc { color: #159752; }
.nrv4-customer-dailoc strong { font-family: Georgia, serif; font-size: clamp(17px, 1.8vw, 27px); font-weight: 500; }
.nrv4-customer-dailoc small { font-family: Arial, sans-serif; font-size: 9px; }
.nrv4-customer-aahome { min-height: 84px; border-radius: 11px; background: #171717; color: #fff; box-shadow: inset 0 3px #ffc21b, inset 0 -3px #ffc21b; }
.nrv4-customer-aahome strong { font-size: clamp(20px, 2.15vw, 32px); letter-spacing: -.07em; }
.nrv4-customer-aahome strong span { color: #ffc21b; }
.nrv4-customer-redlogistics { color: #bc263d; }
.nrv4-customer-redlogistics .nrv4-red-mark { color: #176bb6; font-size: 54px; line-height: .8; }
.nrv4-customer-redlogistics strong:last-child { font-size: 13px; }
.nrv4-customer-redlogistics small { display: inline; margin: 0; color: #258c61; }
.nrv4-customer-nu { width: fit-content; min-width: 94px; justify-self: center; border: 2px solid #aaa; color: #252525; }
.nrv4-customer-nu strong { font-size: 35px; font-weight: 500; }
.nrv4-customer-nu small { font-size: 10px; letter-spacing: .2em; }
.nrv4-customer-hanasun { color: #0975cb; }
.nrv4-customer-hanasun strong { font-size: clamp(22px, 2.4vw, 35px); font-weight: 800; }
.nrv4-customer-hanasun sup { font-size: 12px; }
.nrv4-customer-gmc { width: fit-content; min-width: 102px; justify-self: center; border: 7px solid #13824c; border-radius: 50%; color: #13824c; }
.nrv4-customer-gmc strong { font-size: 12px; }
.nrv4-customer-gmc small { font-size: 24px; }
.nrv4-customer-landdana { color: #f04b46; }
.nrv4-customer-landdana strong { font-size: clamp(17px, 1.7vw, 25px); }
.nrv4-customer-landdana small { color: #d99400; font-family: Georgia, serif; }
.nrv4-customer-tumaco { color: #1d4d94; }
.nrv4-customer-tumaco strong { font-size: clamp(17px, 1.65vw, 25px); }
.nrv4-customer-tumaco small { color: #dc8b1a; font-size: 8px; }
.nrv4-customer-ktasofa { color: #124936; }
.nrv4-customer-ktasofa strong { font-size: clamp(18px, 1.7vw, 26px); letter-spacing: -.08em; }
.nrv4-customer-ktasofa span { color: #54a45b; }
.nrv4-customer-ktasofa small { letter-spacing: .3em; }
.nrv4-customer-bptravel { color: #d83c82; }
.nrv4-customer-bptravel strong { font-size: 35px; line-height: .8; }
.nrv4-customer-bptravel span { display: block; color: #a67417; font-family: Georgia, serif; font-size: 18px; font-style: italic; }
.nrv4-customer-bptravel small { color: #709b27; font-size: 8px; }
.nrv4-customer-gotfit { color: #161a20; }
.nrv4-customer-gotfit strong { font-size: clamp(18px, 1.8vw, 27px); font-weight: 800; }
.nrv4-customer-gotfit strong::first-letter { color: #ed2636; }
.nrv4-customer-gotfit small { font-size: 8px; }
.nrv4-customer-vietfarm { color: #287d2a; }
.nrv4-customer-vietfarm strong { font-size: clamp(20px, 2.05vw, 31px); font-weight: 700; }
.nrv4-customer-vietfarm small { color: #a34442; font-family: Georgia, serif; font-size: 10px; font-style: italic; letter-spacing: .14em; }
.nrv4-customer-toora { color: #b48417; }
.nrv4-customer-toora strong { font-family: Georgia, serif; font-size: clamp(22px, 2.2vw, 33px); font-weight: 500; letter-spacing: .1em; }
.nrv4-customer-hoaphat { width: fit-content; min-width: 80px; justify-self: center; padding-inline: 14px; background: #1380b8; color: white; clip-path: polygon(0 0,100% 0,88% 100%,12% 100%); }
.nrv4-customer-hoaphat strong { font-size: 13px; }
.nrv4-customer-hoaphat small { font-size: 9px; }
.nrv4-customer-baophuc { color: #1129d2; }
.nrv4-customer-baophuc strong { font-size: clamp(18px, 1.85vw, 28px); }
.nrv4-customer-baophuc small { font-size: 9px; }
.nrv4-customer-annga { color: #242424; }
.nrv4-customer-annga strong { font-size: 53px; line-height: .8; }
.nrv4-customer-annga small { color: #e94337; font-size: 22px; font-weight: 800; }
.nrv4-customer-kientrucxanh { color: #df3938; }
.nrv4-customer-kientrucxanh strong { font-size: clamp(16px, 1.6vw, 24px); font-weight: 500; }
.nrv4-customer-kientrucxanh strong::first-letter { color: #1a9e65; }
.nrv4-customer-kientrucxanh span { color: #1a9e65; }
.nrv4-customer-takaco { min-height: 100px; background: #269ba2; color: #e7d063; }
.nrv4-customer-takaco strong { font-size: 36px; }
.nrv4-customer-takaco small { font-size: 15px; letter-spacing: .2em; }
.nrv4-customer-pagination { display: flex; align-items: center; justify-content: center; gap: 14px; margin-top: 15px; }
.nrv4-customer-pagination span { width: 11px; height: 11px; border-radius: 50%; background: #c4c9cf; }
.nrv4-customer-pagination .is-active { position: relative; width: 15px; height: 15px; background: var(--blue); box-shadow: 0 0 0 6px white, 0 0 0 8px #75bcfa; }
.nrv4-customers-orbit { position: absolute; z-index: -1; width: 520px; height: 240px; border: 1px solid rgba(72, 166, 239, .12); border-radius: 50%; pointer-events: none; }
.nrv4-customers-orbit::before, .nrv4-customers-orbit::after { position: absolute; inset: 15px; border: 1px solid rgba(72, 166, 239, .1); border-radius: 50%; content: ""; }
.nrv4-customers-orbit::after { inset: 33px; }
.nrv4-customers-orbit-top { top: -130px; left: -230px; transform: rotate(-16deg); }
.nrv4-customers-orbit-bottom { right: -210px; bottom: -150px; transform: rotate(15deg); }
.nrv4-customers-dots { position: absolute; z-index: -1; width: 145px; height: 180px; opacity: .35; background-image: radial-gradient(#80c2f2 1.6px, transparent 1.6px); background-size: 12px 12px; mask-image: radial-gradient(ellipse, #000 35%, transparent 72%); pointer-events: none; }
.nrv4-customers-dots-top { top: -45px; right: -20px; }
.nrv4-customers-dots-bottom { bottom: -20px; left: -20px; }
.nrv4-customer-swiper { display: block; overflow: hidden; cursor: grab; touch-action: pan-y; }
.nrv4-customer-swiper:active { cursor: grabbing; }
.swiper { position: relative; overflow: hidden; }
.swiper-wrapper { display: flex; width: 100%; box-sizing: content-box; }
.swiper-slide { position: relative; display: block; flex-shrink: 0; }
.nrv4-customer-swiper .swiper-wrapper { align-items: stretch; }
.nrv4-customer-swiper .nrv4-customer-logo { box-sizing: border-box; height: auto; }
.nrv4-customer-pagination.swiper-pagination { position: relative; inset: auto; display: flex; align-items: center; justify-content: center; gap: 14px; margin-top: 20px; }
.nrv4-customer-pagination .swiper-pagination-bullet { width: 11px; height: 11px; margin: 0 !important; border-radius: 50%; background: #c4c9cf; opacity: 1; }
.nrv4-customer-pagination .swiper-pagination-bullet-active { position: relative; width: 15px; height: 15px; background: var(--blue); box-shadow: 0 0 0 6px white, 0 0 0 8px #75bcfa; }
.nrv4-customer-swiper:not(.swiper-initialized) { overflow-x: auto; overflow-y: hidden; cursor: grab; scrollbar-width: none; scroll-behavior: smooth; scroll-snap-type: x mandatory; touch-action: pan-y; }
.nrv4-customer-swiper:not(.swiper-initialized)::-webkit-scrollbar, .nrv4-testimonial-swiper:not(.swiper-initialized)::-webkit-scrollbar { display: none; }
.nrv4-customer-swiper:not(.swiper-initialized) .swiper-wrapper { display: grid !important; width: 125%; grid-template-columns: repeat(5, minmax(0, 1fr)); grid-template-rows: repeat(5, 104px); grid-auto-flow: row; gap: 14px 24px; }
.nrv4-customer-swiper:not(.swiper-initialized) .nrv4-customer-logo { min-height: 0; scroll-snap-align: start; }
.nrv4-testimonial-swiper:not(.swiper-initialized) { overflow-x: auto; overflow-y: hidden; cursor: grab; scrollbar-width: none; scroll-behavior: smooth; scroll-snap-type: x mandatory; touch-action: pan-y; }
.nrv4-testimonial-swiper:not(.swiper-initialized) .swiper-wrapper { display: flex; width: 100%; gap: 16px; }
.nrv4-testimonial-swiper:not(.swiper-initialized) .nrv4-testimonial-card { flex: 0 0 calc((100% - 32px) / 3); scroll-snap-align: start; }
.nrv4-customer-swiper.is-dragging, .nrv4-testimonial-swiper.is-dragging { cursor: grabbing; scroll-behavior: auto; scroll-snap-type: none; user-select: none; }
.nrv4-customer-pagination:not(.swiper-pagination-lock) .nrv4-customer-page-button { width: 11px; height: 11px; padding: 0; border: 0; border-radius: 50%; background: #c4c9cf; cursor: pointer; }
.nrv4-customer-pagination:not(.swiper-pagination-lock) .nrv4-customer-page-button.is-active { width: 15px; height: 15px; background: var(--blue); box-shadow: 0 0 0 6px white, 0 0 0 8px #75bcfa; }

/* Customer logos: native draggable strip with two identical logo pages. */
.nrv4-customer-slider { height: 340px; overflow-x: auto; overflow-y: hidden; cursor: grab; scrollbar-width: none; scroll-behavior: smooth; scroll-snap-type: x mandatory; touch-action: pan-y; }
.nrv4-customer-slider::-webkit-scrollbar { display: none; }
.nrv4-customer-slider.is-dragging { cursor: grabbing; scroll-behavior: auto; scroll-snap-type: none; user-select: none; }
.nrv4-customer-logos { display: grid; width: 200%; grid-template-columns: repeat(18, minmax(0, 1fr)); grid-template-rows: repeat(3, 104px); grid-auto-flow: column; gap: 14px 24px; align-items: center; }
.nrv4-customer-logo { min-height: 0; padding: 8px; scroll-snap-align: start; }
.nrv4-customer-logo img { display: block; width: min(100%, 210px); max-height: 78px; object-fit: contain; }

/* Latest articles */
.nrv4-articles-section { position: relative; isolation: isolate; overflow: hidden; padding: 72px 0 78px; background: linear-gradient(180deg, #fff 0%, #fbfdff 100%); }
.nrv4-articles-container { position: relative; z-index: 1; width: min(1536px, calc(100% - 56px)); }
.nrv4-articles-decoration { position: absolute; z-index: -1; width: 380px; aspect-ratio: 1; border-radius: 50%; background: #eef7ff; pointer-events: none; }
.nrv4-articles-decoration-top { top: -255px; left: -185px; }
.nrv4-articles-decoration-bottom { right: -230px; bottom: -290px; width: 430px; }
.nrv4-articles-heading { margin: 0 0 32px; text-align: center; }
.nrv4-articles-kicker { display: inline-flex; align-items: center; gap: 18px; margin: 0 0 10px; color: var(--blue); font-size: 15px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; }
.nrv4-articles-kicker span { width: 44px; height: 1px; background: #8fc6fb; }
.nrv4-articles-heading h2 { margin: 0; color: var(--navy-deep); font-size: clamp(38px, 4vw, 56px); font-weight: 700; letter-spacing: -.045em; line-height: 1.14; }
.nrv4-articles-heading > p:last-child { margin: 10px 0 0; color: #657ba5; font-size: clamp(17px, 1.7vw, 23px); font-weight: 500; line-height: 1.45; }
.nrv4-articles-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.nrv4-article-card { display: flex; min-width: 0; flex-direction: column; padding: 18px; border: 1px solid #cfe5fb; border-radius: 18px; background: rgba(255,255,255,.94); box-shadow: 0 8px 24px rgba(33,110,190,.07); transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease; }
.nrv4-article-card:hover { transform: translateY(-3px); border-color: #a8d4fb; box-shadow: 0 14px 30px rgba(33,110,190,.12); }
.nrv4-article-visual { display: block; overflow: hidden; aspect-ratio: 1.55 / 1; border-radius: 14px; background: #eef7ff; }
.nrv4-article-visual svg { display: block; width: 100%; height: 100%; transition: transform .35s ease; }
.nrv4-article-visual img { display:block; width:100%; height:100%; object-fit:cover; transition:transform .35s ease; }
.nrv4-article-card:hover .nrv4-article-visual img { transform:scale(1.025); }
.nrv4-article-card:hover .nrv4-article-visual svg { transform: scale(1.025); }
.nrv4-article-copy { display: flex; flex: 1; flex-direction: column; align-items: flex-start; padding: 15px 2px 2px; }
.nrv4-article-category { display: inline-flex; min-height: 32px; align-items: center; padding: 4px 13px; border-radius: 999px; background: #e8f4ff; color: var(--blue-strong); font-size: 15px; font-weight: 600; line-height: 1.2; }
.nrv4-article-copy h3 { display: -webkit-box; width: 100%; overflow: hidden; -webkit-box-orient: vertical; -webkit-line-clamp: 2; line-clamp: 2; margin: 12px 0 0; color: var(--navy-deep); font-size: clamp(16px, 1.4vw, 22px); font-weight: 700; letter-spacing: -.035em; line-height: 1.25; }
.nrv4-article-copy h3 a:hover { color: var(--blue-strong); }
.nrv4-article-copy p { display: -webkit-box; width: 100%; overflow: hidden; -webkit-box-orient: vertical; -webkit-line-clamp: 3; line-clamp: 3; margin: 9px 0 0; color: #657ba5; font-size: 17px; font-weight: 500; line-height: 1.45; }
.nrv4-article-meta { display: flex; flex-wrap: wrap; gap: 5px 14px; margin-top: auto; padding-top: 15px; color: #7890b5; font-size: 13px; font-weight: 600; line-height: 1.4; }
.nrv4-article-meta span, .nrv4-article-meta time { display: inline-flex; align-items: center; gap: 6px; }
.nrv4-article-meta .material-symbols-rounded { font-size: 16px; font-style: normal; line-height: 1; }
.nrv4-article-link { display: inline-flex; align-items: center; gap: 14px; margin-top: auto; padding-top: 17px; color: var(--blue-strong); font-size: 17px; font-weight: 700; }
.nrv4-article-link span, .nrv4-articles-all span { font-size: 23px; line-height: 1; transition: transform .2s ease; }
.nrv4-article-link:hover span, .nrv4-articles-all:hover span { transform: translateX(4px); }
.nrv4-articles-all { display: flex; width: fit-content; min-height: 52px; align-items: center; gap: 12px; margin: 22px auto 0; padding: 9px 28px; border-radius: 10px; }

/* Social feed and contact CTA */
.nrv4-social-section { position: relative; isolation: isolate; overflow: hidden; padding: 70px 0 58px; background: #fff; }
.nrv4-social-container { position: relative; z-index: 1; width: min(1536px, calc(100% - 56px)); }
.nrv4-social-decoration { position: absolute; z-index: -1; top: -220px; left: -180px; width: 390px; aspect-ratio: 1; border-radius: 50%; background: #eef7ff; pointer-events: none; }
.nrv4-social-heading { margin: 0 0 28px; text-align: center; }
.nrv4-social-heading h2 { margin: 0; color: var(--navy-deep); font-size: clamp(33px, 3.6vw, 48px); font-weight: 700; letter-spacing: -.04em; line-height: 1.2; }
.nrv4-social-heading h2 span { color: var(--blue-strong); }
.nrv4-social-heading-mark { display: block; width: 50px; height: 6px; margin: 13px auto 0; border-radius: 99px; background: var(--blue); box-shadow: 18px 0 0 -1px #9ccfff; }
.nrv4-social-carousel { position: relative; padding: 0 48px; }
.nrv4-social-track { display: flex; gap: 18px; overflow-x: auto; overflow-y: hidden; padding: 0 2px 10px; cursor: grab; scrollbar-width: none; scroll-behavior: smooth; scroll-snap-type: x mandatory; touch-action: pan-y; }
.nrv4-social-track::-webkit-scrollbar { display: none; }
.nrv4-social-track.is-dragging { cursor: grabbing; scroll-behavior: auto; scroll-snap-type: none; user-select: none; }
.nrv4-social-card { display: flex; flex: 0 0 clamp(248px, 20vw, 292px); min-width: 0; flex-direction: column; gap: 10px; scroll-snap-align: start; }
.nrv4-social-art { position: relative; display: flex; overflow: hidden; aspect-ratio: .72 / 1; flex-direction: column; justify-content: space-between; border-radius: 18px; background: #182c4e; color: #fff; box-shadow: 0 12px 24px rgba(7,35,82,.15); isolation: isolate; }
.nrv4-social-art::after { position: absolute; z-index: -1; inset: 42% 0 0; background: linear-gradient(180deg, transparent, rgba(0,0,0,.83)); content: ""; pointer-events: none; }
.nrv4-social-art > svg { position: absolute; z-index: -2; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.nrv4-social-age { align-self: flex-start; margin: 17px 0 0 16px; padding: 6px 11px; border: 1px solid rgba(255,255,255,.14); border-radius: 999px; background: rgba(4,18,42,.78); color: white; font-size: 12px; font-weight: 700; line-height: 1.2; }
.nrv4-social-caption { display: -webkit-box; overflow: hidden; margin: auto 15px 17px; color: #fff; font-size: 16px; font-weight: 700; line-height: 1.35; text-shadow: 0 2px 5px rgba(0,0,0,.35); -webkit-box-orient: vertical; -webkit-line-clamp: 3; }
.nrv4-social-play { position: absolute; top: 50%; left: 50%; display: grid; width: 48px; height: 48px; place-items: center; padding-left: 3px; border: 1px solid rgba(255,255,255,.75); border-radius: 50%; background: rgba(8,120,249,.9); color: white; font-size: 17px; opacity: 0; transform: translate(-50%,-50%) scale(.9); transition: opacity .2s ease, transform .2s ease; }
.nrv4-social-card:hover .nrv4-social-play, .nrv4-social-card:focus-visible .nrv4-social-play { opacity: 1; transform: translate(-50%,-50%) scale(1); }
.nrv4-social-platform { display: inline-flex; align-items: center; gap: 8px; color: #6078a1; font-size: 13px; font-weight: 600; }
.nrv4-platform-facebook { display: inline-grid; width: 21px; height: 21px; place-items: center; border-radius: 50%; background: #1877f2; color: #fff; font-family: Arial,sans-serif; font-size: 17px; }
.nrv4-social-arrow { position: absolute; z-index: 2; top: 43%; display: grid; width: 46px; height: 46px; place-items: center; border: 1px solid #d7e9fb; border-radius: 50%; background: rgba(255,255,255,.97); color: var(--blue); box-shadow: 0 6px 18px rgba(33,110,190,.17); cursor: pointer; transform: translateY(-50%); transition: background .2s ease, color .2s ease, box-shadow .2s ease; }
.nrv4-social-arrow:hover { background: var(--blue); color: white; box-shadow: 0 9px 22px rgba(8,120,249,.28); }
.nrv4-social-arrow svg { width: 21px; height: 21px; fill: none; stroke: currentColor; stroke-width: 2.5; stroke-linecap: round; stroke-linejoin: round; }
.nrv4-social-prev { left: 0; }
.nrv4-social-next { right: 0; }
.nrv4-quote-cta { position: relative; isolation: isolate; overflow: hidden; margin: 0 26px 28px; border: 1px solid #cde5fb; border-radius: 20px; background: linear-gradient(115deg, #f2f8ff 0%, #fff 50%, #f1f8ff 100%); }
.nrv4-quote-cta-inner { position: relative; z-index: 1; display: flex; min-height: 260px; flex-direction: column; align-items: center; justify-content: center; padding: 34px 20px; text-align: center; }
.nrv4-quote-cta h2 { margin: 0; color: var(--navy-deep); font-size: clamp(30px, 3vw, 43px); font-weight: 700; letter-spacing: -.04em; line-height: 1.2; }
.nrv4-quote-cta h2 span { color: var(--blue-strong); }
.nrv4-quote-cta-support { display: inline-flex; align-items: center; gap: 10px; margin: 16px 0 20px; color: #6b80a7; font-size: clamp(17px, 1.8vw, 23px); font-weight: 600; }
.nrv4-quote-cta-support svg { width: 27px; height: 27px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.nrv4-quote-cta-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; }
.nrv4-quote-cta-button { display: inline-flex; min-width: 255px; min-height: 66px; align-items: center; justify-content: center; gap: 13px; padding: 12px 24px; border: 1px solid rgba(255,255,255,.5); border-radius: 15px; background: linear-gradient(110deg, #0878f9, #075fe5); color: #fff; box-shadow: 0 10px 22px rgba(8,120,249,.2); font-size: 23px; font-weight: 700; transition: transform .2s ease, box-shadow .2s ease; }
.nrv4-quote-cta-button:hover { transform: translateY(-2px); box-shadow: 0 14px 26px rgba(8,120,249,.28); }
.nrv4-quote-cta-button svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.nrv4-quote-cta-orb { position: absolute; z-index: -1; width: 290px; aspect-ratio: 1; border: 1px solid rgba(57,149,237,.12); border-radius: 50%; background: rgba(219,239,255,.45); }
.nrv4-quote-cta-orb-left { top: 12px; left: -145px; box-shadow: 0 0 0 28px rgba(222,241,255,.35), 0 0 0 64px rgba(222,241,255,.22); }
.nrv4-quote-cta-orb-right { top: -175px; right: -124px; }
.nrv4-quote-cta-dots { position: absolute; z-index: -1; width: 100px; height: 100px; opacity: .65; background-image: radial-gradient(#a8d4fb 3px, transparent 3px); background-size: 19px 19px; }
.nrv4-quote-cta-dots-left { bottom: 32px; left: 16%; }
.nrv4-quote-cta-dots-right { right: 10%; bottom: 22px; }

@media (max-width: 1180px) {
  :root { --container: 1060px; }
  .nrv4-brand img { width: 202px; }
  .nrv4-main-nav { gap: 20px; }
  .nrv4-nav-list { gap: 17px; }
  .nrv4-nav-link { font-size: 14px; }
  .nrv4-header-search { flex-basis: 176px; }
  .nrv4-hero { min-height: 560px; }
  .nrv4-hero-content { min-height: 560px; }
  .nrv4-hero-copy { width: 55%; }
  .nrv4-hero h1 { font-size: clamp(42px, 4.8vw, 58px); }
  .nrv4-highlight-item { padding-inline: 14px; gap: 10px; }
  .nrv4-highlight-icon { flex-basis: 40px; width: 40px; }
  .nrv4-highlight-icon svg { width: 38px; }
  .nrv4-highlight-item strong { font-size: 14px; }
  .nrv4-highlight-item small { font-size: 11px; }
  .nrv4-articles-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
  .nrv4-article-card { padding: 14px; }
  .nrv4-article-copy h3 { font-size: clamp(16px, 1.8vw, 20px); }
  .nrv4-article-copy p { font-size: 15px; }
  .nrv4-social-section { padding: 62px 0 50px; }
  .nrv4-social-container { width: min(1060px, calc(100% - 48px)); }
  .nrv4-social-carousel { padding-inline: 42px; }
  .nrv4-social-card { flex-basis: clamp(238px, 24vw, 275px); }
  .nrv4-quote-cta { margin-inline: 20px; }
}

@media (max-width: 920px) {
  .nrv4-container { width: min(100% - 40px, 760px); }
  .nrv4-utility-bar { display: none; }
  .nrv4-main-nav { min-height: 72px; gap: 14px; }
  .nrv4-brand img { width: 195px; }
  .nrv4-mobile-menu-toggle { display: grid; flex: 0 0 42px; width: 42px; height: 42px; padding: 0; place-items: center; order: 3; border: 1px solid var(--line); border-radius: 10px; background: white; cursor: pointer; }
  .nrv4-menu-toggle-icon { width: 24px; height: 24px; font-family: "Material Symbols Rounded"; font-size: 25px; font-weight: normal; font-variation-settings: "FILL" 0, "wght" 500, "GRAD" 0, "opsz" 24; line-height: 24px; transition: opacity .18s ease, transform .18s ease; }
  .nrv4-menu-toggle-close { display: none; }
  .nrv4-mobile-menu-toggle[aria-expanded="true"] .nrv4-menu-toggle-open { display: none; }
  .nrv4-mobile-menu-toggle[aria-expanded="true"] .nrv4-menu-toggle-close { display: block; }
  .nrv4-header-search { flex-basis: 210px; margin-left: auto; order: 2; }
  .nrv4-primary-navigation { position: absolute; top: 100%; right: 0; left: 0; display: none; max-height: calc(100dvh - 115px); overflow-y: auto; padding: 10px 20px 18px; border-top: 1px solid var(--line); background: white; box-shadow: 0 18px 28px rgba(7, 35, 82, .14); }
  .nrv4-primary-navigation.nrv4-is-open { display: block; animation: mobile-menu-in .32s cubic-bezier(.22, .61, .36, 1) both; }
  .nrv4-primary-navigation.is-closing { display: block; pointer-events: none; animation: mobile-menu-out .32s cubic-bezier(.22, .61, .36, 1) both; }
  .nrv4-site-header.menu-is-open, .nrv4-site-header.menu-is-closing { position: fixed; inset: 0 0 auto; width: 100%; }
  .nrv4-site-header.menu-is-open .nrv4-primary-navigation, .nrv4-site-header.menu-is-closing .nrv4-primary-navigation { position: fixed; top: var(--mobile-menu-top, 115px); bottom: 0; height: max(0px, calc(100dvh - var(--mobile-menu-top, 115px))); max-height: none; padding-bottom: max(18px, env(safe-area-inset-bottom)); overscroll-behavior: contain; -webkit-overflow-scrolling: touch; }
  .nrv4-nav-list { display: block; }
  .nrv4-nav-item { display: block; border-bottom: 1px solid #edf3fa; }
  .nrv4-nav-link { display: flex; justify-content: space-between; width: 100%; min-height: 48px; padding: 10px 3px; font-size: 15px; text-align: left; }
  .nrv4-nav-link::after { display: none; }
  .nrv4-dropdown-panel, .nrv4-nested-panel { position: static; min-width: 0; padding: 2px 0 9px 12px; border: 0; border-radius: 0; background: transparent; box-shadow: none; }
  .nrv4-nav-item:hover > .nrv4-dropdown-panel, .nrv4-nav-item:focus-within > .nrv4-dropdown-panel { display: none; }
  .nrv4-nav-item.nrv4-is-open > .nrv4-dropdown-panel { display: block; }
  .nrv4-dropdown-panel > a, .nrv4-nested-trigger, .nrv4-nested-panel > a { min-height: 42px; padding: 9px 12px; }
  .nrv4-nested-panel { padding-left: 12px; }
  .nrv4-nested-item:hover > .nrv4-nested-panel, .nrv4-nested-item:focus-within > .nrv4-nested-panel { display: none; }
  .nrv4-nested-item.nrv4-is-open > .nrv4-nested-panel { display: block; }
  .nrv4-has-mega-menu { position: static; }
  .nrv4-mega-menu { position: static; display: none; width: 100%; min-height: unset; grid-template-columns: 1fr; margin: 0 0 14px; border-radius: 12px; box-shadow: none; transform: none; }
  .nrv4-nav-item:hover > .nrv4-mega-menu, .nrv4-nav-item:focus-within > .nrv4-mega-menu { display: none; }
  .nrv4-nav-item.nrv4-is-open > .nrv4-mega-menu { display: grid; }
  .nrv4-nav-item.nrv4-is-open > .nrv4-dropdown-panel,
  .nrv4-nested-item.nrv4-is-open > .nrv4-nested-panel,
  .nrv4-nav-item.nrv4-is-open > .nrv4-mega-menu { animation: mobile-submenu-in .24s cubic-bezier(.22, .61, .36, 1) both; }
  .nrv4-nav-item.is-closing > .nrv4-dropdown-panel,
  .nrv4-nested-item.is-closing > .nrv4-nested-panel { display: block; pointer-events: none; animation: mobile-submenu-out .24s cubic-bezier(.22, .61, .36, 1) both; }
  .nrv4-nav-item.is-closing > .nrv4-mega-menu { display: grid; pointer-events: none; animation: mobile-submenu-out .24s cubic-bezier(.22, .61, .36, 1) both; }
  .nrv4-mega-tabs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; padding: 9px; }
  .nrv4-mega-tab { display: block; min-height: 0; padding: 10px 8px; text-align: center; font-size: 11px; }
  .nrv4-mega-tab-icon { margin: 0 auto 6px; }
  .nrv4-mega-tab small { font-size: 9px; }
  .nrv4-mega-content { padding: 16px; }
  .nrv4-mega-content-heading { align-items: flex-start; flex-direction: column; gap: 10px; padding-bottom: 10px; }
  .nrv4-mega-content h2 { font-size: 17px; }
  .nrv4-service-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .nrv4-service-link { min-height: 58px; padding: 8px 4px; }
  .nrv4-hero { min-height: 550px; }
  .nrv4-hero-background { left: 0; width: 100%; background-image: linear-gradient(90deg, rgba(245,250,255,.97) 0%, rgba(245,250,255,.9) 48%, rgba(240,248,255,.24) 100%), var(--nrv4-hero-image, url("assets/images/1.hero-background-labeled.png")); background-position: center, 58% center; background-size: cover, auto 100%; transform: none; }
  .nrv4-hero-content { min-height: 550px; }
  .nrv4-hero-copy { width: min(590px, 70%); }
  .nrv4-hero h1 { font-size: clamp(42px, 6vw, 58px); }
  .nrv4-hero-description { font-size: 17px; }
  .nrv4-highlight-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px 0; padding-block: 20px; }
  .nrv4-highlight-item:nth-child(2) { border-right: 0; }
  .nrv4-highlight-item:nth-child(3) { padding-left: 5px; }
  .nrv4-system-section { padding: 36px 0 40px; }
  .nrv4-system-heading { margin-bottom: 22px; }
  .nrv4-system-diagram { min-height: 450px; grid-template-rows: 120px 43px 140px 27px 120px; column-gap: 16px; }
  .nrv4-pillar-card { padding: 11px 10px; border-radius: 15px; }
  .nrv4-pillar-icon { width: 34px; height: 34px; margin-block: 4px 5px; }
  .nrv4-tree-seo .nrv4-pillar-icon { width: 22px; height: 26px; }
  .nrv4-tree-website .nrv4-pillar-icon { width: 38px; height: 38px; }
  .nrv4-pillar-card h3 { font-size: 14px; }
  .nrv4-pillar-card p { font-size: 10px; }
  .nrv4-projects-section { padding: 58px 0 82px; }
  .nrv4-projects-grid { grid-template-columns: 1fr; gap: 14px; }
  .nrv4-project-card-featured { grid-column: auto; width: 100%; }
  .nrv4-project-card { grid-template-columns: minmax(0, .9fr) minmax(0, 1fr); min-height: 260px; }
  .nrv4-why-section { padding: 72px 0 78px; }
  .nrv4-why-panel { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 0; padding: 28px 12px; }
  .nrv4-why-item { padding: 0 22px; }
  .nrv4-why-item:nth-child(2) { border-right: 0; }
  .nrv4-why-item:nth-child(3) { padding-top: 26px; border-top: 1px solid #d3e4fa; }
  .nrv4-why-item:nth-child(4) { padding-top: 26px; border-top: 1px solid #d3e4fa; }
  .nrv4-testimonials-section { padding: 68px 0 76px; }
  .nrv4-testimonial-prev { left: -13px; }
  .nrv4-testimonial-next { right: -13px; }
  .nrv4-testimonial-arrow { width: 40px; height: 40px; }
  .nrv4-services-section { padding: 70px 0 68px; }
  .nrv4-services-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
  .nrv4-service-card { height: 240px; }
  .nrv4-customers-section { padding: 62px 0 30px; }
  .nrv4-customer-logos { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px 16px; }
  .nrv4-customer-logo { min-height: 94px; }
  .nrv4-customer-logos { width: 250%; grid-template-columns: repeat(10, minmax(0, 1fr)); grid-template-rows: repeat(3, 94px); grid-auto-flow: column; gap: 10px 16px; }
  .nrv4-customer-slider { height: 302px; }
  .nrv4-customer-logo img { max-height: 70px; }
  .nrv4-customer-swiper:not(.swiper-initialized) .swiper-wrapper { width: 166.667%; grid-template-rows: repeat(5, 94px); gap: 10px 16px; }
  .nrv4-testimonial-swiper:not(.swiper-initialized) .nrv4-testimonial-card { flex-basis: calc((100% - 16px) / 2); }
  .nrv4-articles-section { padding: 60px 0 66px; }
  .nrv4-articles-container { width: min(760px, calc(100% - 40px)); }
  .nrv4-articles-grid { grid-template-columns: 1fr; gap: 16px; }
  .nrv4-article-card { display: grid; grid-template-columns: minmax(220px, .9fr) 1.1fr; gap: 18px; align-items: stretch; }
  .nrv4-article-visual { min-height: 100%; aspect-ratio: auto; }
  .nrv4-article-copy { padding: 2px 0; }
  .nrv4-social-section { padding: 58px 0 44px; }
  .nrv4-social-container { width: min(760px, calc(100% - 40px)); }
  .nrv4-social-heading h2 { font-size: clamp(30px, 5vw, 40px); }
  .nrv4-social-carousel { padding-inline: 38px; }
  .nrv4-social-card { flex-basis: clamp(235px, 39vw, 280px); }
  .nrv4-social-arrow { width: 40px; height: 40px; }
  .nrv4-quote-cta { margin-inline: 20px; }
  .nrv4-quote-cta-inner { min-height: 235px; }
}

@media (max-width: 600px) {
  body { font-size: 14px; }
  .nrv4-container { width: calc(100% - 32px); }
  .nrv4-main-nav { min-height: 64px; gap: 8px; }
  .nrv4-brand img { width: 130px; }
  .nrv4-mobile-menu-toggle { flex-basis: 38px; width: 38px; height: 38px; }
  .nrv4-primary-navigation { padding-inline: 16px; }
  .nrv4-main-nav { flex-wrap: wrap; padding-block: 8px; }
  .nrv4-header-search { flex: 0 0 100%; order: 4; height: 40px; }
  .nrv4-hero { min-height: 0; }
  .nrv4-hero-background { background-image: linear-gradient(180deg, #f5faff 0%, rgba(245,250,255,.98) 38%, rgba(245,250,255,0) 54%), var(--nrv4-hero-image-mobile, url("assets/images/1.hero-background-mobile.png")); background-position: center, center calc(100% - 16px); background-repeat: no-repeat; background-size: cover, min(100%, 430px) auto; }
  .nrv4-hero-content { align-items: flex-start; min-height: 0; padding: 20px 0 360px; }
  .nrv4-hero-copy { width: 100%; }
  .nrv4-hero-kicker { margin-bottom: 17px; padding: 7px 12px; font-size: 9px; letter-spacing: .1em; }
  .nrv4-hero h1 { max-width: 500px; font-size: clamp(38px, 10.6vw, 48px); line-height: 1.06; letter-spacing: -.045em; }
  .nrv4-hero-description { max-width: 500px; margin-top: 15px; font-size: 15px; line-height: 1.48; }
  .nrv4-hero-actions { align-items: flex-start; flex-direction: column; gap: 13px; margin-top: 18px; }
  .nrv4-button-large { min-height: 50px; padding-inline: 19px; font-size: 14px; }
  .nrv4-video-link { font-size: 13px; }
  .nrv4-play-button { width: 39px; height: 39px; }
  .nrv4-highlight-grid { grid-template-columns: 1fr; gap: 0; padding-block: 8px; }
  .nrv4-highlight-item, .nrv4-highlight-item:first-child, .nrv4-highlight-item:nth-child(3), .nrv4-highlight-item:last-child { min-height: 64px; padding: 8px 2px; border-right: 0; border-bottom: 1px solid #e6eef8; }
  .nrv4-highlight-item:last-child { border-bottom: 0; }
  .nrv4-highlight-icon { flex-basis: 43px; width: 43px; }
  .nrv4-highlight-item strong { font-size: 14px; }
  .nrv4-highlight-item small { font-size: 11px; }
  .nrv4-system-section { padding: 34px 0 38px; }
  .nrv4-system-section > .nrv4-container { width: calc(100% - 32px); }
  .nrv4-system-heading { margin-bottom: 20px; }
  .nrv4-system-kicker { font-size: 11px; }
  .nrv4-system-heading h2 { font-size: clamp(27px, 7vw, 35px); }
  .nrv4-system-heading > p:last-child { margin-top: 12px; font-size: 15px; }
  .nrv4-system-diagram { display: flex; min-height: 0; flex-direction: column; gap: 26px; }
  .nrv4-system-connectors { display: none; }
  .nrv4-pillar-card { width: 100%; min-height: 118px; padding: 11px 15px; border-radius: 14px; }
  .nrv4-pillar-card:not(.nrv4-tree-crm)::after { position: absolute; top: calc(100% + 3px); left: 50%; color: var(--blue); content: "↓"; font-size: 24px; font-style: normal; font-weight: 700; line-height: 26px; transform: translateX(-50%); }
  .nrv4-pillar-number { font-size: 11px; }
  .nrv4-pillar-icon, .nrv4-tree-website .nrv4-pillar-icon { width: 32px; height: 32px; margin: 4px 0 5px; }
  .nrv4-tree-seo .nrv4-pillar-icon { width: 20px; height: 24px; }
  .nrv4-pillar-card h3 { font-size: 14px; }
  .nrv4-pillar-card p { margin-top: 4px; font-size: 10px; }
  .nrv4-system-more { margin-top: 18px; font-size: 12px; }
  .nrv4-projects-section { padding: 50px 0 70px; }
  .nrv4-projects-heading { margin-bottom: 26px; }
  .nrv4-projects-kicker { font-size: 11px; }
  .nrv4-projects-heading h2 { font-size: clamp(27px, 7vw, 35px); }
  .nrv4-projects-heading > p:last-child { margin-top: 11px; font-size: 15px; }
  .nrv4-project-card { grid-template-columns: 1fr; gap: 14px; width: 100%; height: max-content; min-height: 0; align-self: start; padding: 11px; border-radius: 14px; }
  .nrv4-project-visual { aspect-ratio: 1.45 / 1; border-radius: 10px; }
  .nrv4-project-copy { padding: 0 4px 6px; }
  .nrv4-project-category { min-height: 32px; gap: 7px; padding-right: 11px; font-size: 12px; }
  .nrv4-category-icon { flex-basis: 25px; width: 25px; height: 25px; font-size: 17px; }
  .nrv4-project-copy h3 { margin: 10px 0 11px; font-size: 20px; }
  .nrv4-project-detail { margin-top: 8px; padding-left: 10px; }
  .nrv4-project-detail strong { font-size: 13px; }
  .nrv4-project-detail p { font-size: 13px; }
  .nrv4-project-detail-button { min-height: 39px; margin-top: 13px; padding-inline: 14px; font-size: 13px; }
  .nrv4-why-section { padding: 62px 0 68px; }
  .nrv4-why-heading { margin-bottom: 22px; }
  .nrv4-why-kicker { font-size: 11px; }
  .nrv4-why-heading h2 { font-size: clamp(27px, 7vw, 35px); }
  .nrv4-why-heading > p:last-child { margin-top: 11px; font-size: 15px; }
  .nrv4-why-panel { grid-template-columns: 1fr; gap: 0; padding: 10px 18px; border-radius: 16px; }
  .nrv4-why-item, .nrv4-why-item:nth-child(2), .nrv4-why-item:nth-child(3), .nrv4-why-item:nth-child(4) { display: grid; grid-template-columns: 50px 1fr; column-gap: 14px; align-items: center; padding: 15px 0; border: 0; border-bottom: 1px solid #d3e4fa; }
  .nrv4-why-item:last-child { border-bottom: 0; }
  .nrv4-why-icon { grid-row: span 2; width: 48px; height: 48px; margin: 0; border-radius: 12px; }
  .nrv4-why-icon svg { width: 32px; }
  .nrv4-why-item h3 { font-size: 16px; }
  .nrv4-why-item p { margin-top: 3px; font-size: 13px; }
  .nrv4-testimonials-section { padding: 58px 0 64px; }
  .nrv4-testimonials-heading { margin-bottom: 23px; }
  .nrv4-testimonials-heading h2 { font-size: clamp(27px, 7vw, 35px); }
  .nrv4-testimonial-card { padding: 17px 14px 14px; }
  .nrv4-client-brand { min-height: 78px; }
  .nrv4-testimonial-quote { min-height: 0; margin: 16px 0 13px; }
  .nrv4-testimonial-quote p { font-size: 14px; -webkit-line-clamp: 5; }
  .nrv4-testimonial-poster { aspect-ratio: 16 / 8.8; }
  .nrv4-poster-heading { top: 14px; right: 13px; font-size: 16px; }
  .nrv4-poster-person > b { width: 40px; height: 40px; font-size: 13px; }
  .nrv4-poster-client { right: 12px; bottom: 17px; font-size: 8px; }
  .nrv4-testimonial-arrow { width: 36px; height: 36px; }
  .nrv4-testimonial-arrow svg { width: 17px; height: 17px; }
  .nrv4-testimonial-prev { left: -11px; }
  .nrv4-testimonial-next { right: -11px; }
  .nrv4-services-section { padding: 58px 0 62px; }
  .nrv4-services-container { width: calc(100% - 32px); }
  .nrv4-services-heading { margin-bottom: 23px; }
  .nrv4-services-heading h2 { font-size: clamp(27px, 7.2vw, 35px); }
  .nrv4-services-grid { grid-template-columns: 1fr; gap: 13px; }
  .nrv4-service-card { height: 240px; border-radius: 14px; }
  .nrv4-service-card-face { padding: 14px; border-radius: 13px; }
  .nrv4-service-card-icon { width: 58px; height: 58px; flex-basis: 58px; border-radius: 13px; }
  .nrv4-service-card-icon svg { width: 44px; height: 44px; }
  .nrv4-service-card-icon .material-symbols-rounded { font-size: 34px; }
  .nrv4-service-card h3 { margin-top: 11px; font-size: 18px; }
  .nrv4-service-card p { margin-top: 6px; font-size: 14px; }
  .nrv4-services-note { width: 100%; min-height: 46px; gap: 9px; margin-top: 18px; padding: 7px 12px; border-radius: 14px; font-size: 13px; }
  .nrv4-customers-section { padding: 54px 0 27px; }
  .nrv4-customers-container { width: calc(100% - 32px); }
  .nrv4-customers-section h2 { margin-bottom: 18px; font-size: clamp(26px, 7vw, 34px); }
  .nrv4-customer-logos { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4px 8px; }
  .nrv4-customer-logos { width: 500%; grid-template-columns: repeat(10, minmax(0, 1fr)); grid-template-rows: repeat(3, 82px); grid-auto-flow: column; gap: 4px 8px; }
  .nrv4-customer-slider { height: 254px; }
  .nrv4-customer-logo img { max-height: 62px; }
  .nrv4-customer-swiper:not(.swiper-initialized) .swiper-wrapper { width: 250%; grid-template-rows: repeat(5, 82px); gap: 4px 8px; }
  .nrv4-customer-logo { min-height: 82px; padding: 7px 4px; }
  .nrv4-customer-logo strong { font-size: clamp(14px, 4vw, 18px); }
  .nrv4-customer-himalaya .nrv4-himalaya-mark { font-size: 48px; }
  .nrv4-customer-bien strong { font-size: 14px; }
  .nrv4-customer-dailoc strong { font-size: 17px; }
  .nrv4-customer-aahome strong { font-size: 22px; }
  .nrv4-customer-hanasun strong { font-size: 23px; }
  .nrv4-customer-gmc { min-width: 84px; border-width: 5px; }
  .nrv4-customer-vietfarm strong { font-size: 22px; }
  .nrv4-customer-toora strong { font-size: 22px; }
  .nrv4-customer-takaco { min-height: 82px; }
  .nrv4-customer-pagination { gap: 11px; margin-top: 12px; }
  .nrv4-customer-pagination .nrv4-customer-page-button { width: 8px; height: 8px; }
  .nrv4-customer-pagination .nrv4-customer-page-button.is-active { width: 12px; height: 12px; box-shadow: 0 0 0 4px white, 0 0 0 6px #75bcfa; }
  .nrv4-articles-section { padding: 54px 0 60px; }
  .nrv4-articles-container { width: calc(100% - 32px); }
  .nrv4-articles-heading { margin-bottom: 22px; }
  .nrv4-articles-kicker { gap: 10px; font-size: 10px; letter-spacing: .12em; }
  .nrv4-articles-kicker span { width: 25px; }
  .nrv4-articles-heading h2 { font-size: clamp(31px, 8vw, 40px); }
  .nrv4-articles-heading > p:last-child { margin-top: 8px; font-size: 15px; }
  .nrv4-articles-grid { gap: 13px; }
  .nrv4-article-card { display: flex; gap: 0; padding: 11px; border-radius: 15px; }
  .nrv4-article-visual { min-height: 0; aspect-ratio: 1.55 / 1; border-radius: 11px; }
  .nrv4-article-copy { padding: 12px 2px 2px; }
  .nrv4-article-category { min-height: 29px; padding-inline: 11px; font-size: 13px; }
  .nrv4-article-copy h3 { margin-top: 9px; font-size: 16px; }
  .nrv4-article-copy p { margin-top: 6px; font-size: 14px; }
  .nrv4-article-meta { gap: 4px 11px; padding-top: 11px; font-size: 12px; }
  .nrv4-article-link { padding-top: 12px; font-size: 15px; }
  .nrv4-articles-all { min-height: 47px; margin-top: 17px; padding-inline: 21px; font-size: 14px; }
  .nrv4-social-section { padding: 52px 0 36px; }
  .nrv4-social-container { width: calc(100% - 32px); }
  .nrv4-social-heading { margin-bottom: 18px; }
  .nrv4-social-heading h2 { font-size: clamp(27px, 7vw, 34px); }
  .nrv4-social-heading-mark { width: 38px; height: 4px; margin-top: 9px; }
  .nrv4-social-carousel { padding-inline: 30px; }
  .nrv4-social-track { gap: 12px; }
  .nrv4-social-card { flex-basis: min(76vw, 285px); gap: 8px; }
  .nrv4-social-art { border-radius: 15px; }
  .nrv4-social-age { margin: 12px 0 0 12px; padding: 5px 9px; font-size: 11px; }
  .nrv4-social-caption { margin: auto 12px 13px; font-size: 14px; }
  .nrv4-social-platform { font-size: 12px; }
  .nrv4-social-arrow { width: 34px; height: 34px; }
  .nrv4-social-arrow svg { width: 18px; }
  .nrv4-quote-cta { margin: 0 12px 14px; border-radius: 15px; }
  .nrv4-quote-cta-inner { min-height: 0; padding: 32px 17px; }
  .nrv4-quote-cta h2 { font-size: clamp(26px, 7vw, 34px); }
  .nrv4-quote-cta-support { margin: 12px 0 17px; font-size: 16px; }
  .nrv4-quote-cta-support svg { width: 22px; height: 22px; }
  .nrv4-quote-cta-actions { width: 100%; flex-direction: column; gap: 10px; }
  .nrv4-quote-cta-button { width: min(100%, 330px); min-width: 0; min-height: 54px; align-self: center; border-radius: 12px; font-size: 18px; }
  .nrv4-quote-cta-button svg { width: 21px; height: 21px; }
  .nrv4-quote-cta-dots-left { left: 4%; }
  .nrv4-quote-cta-dots-right { right: 3%; }
  .nrv4-testimonial-swiper:not(.swiper-initialized) .nrv4-testimonial-card { flex-basis: 100%; }
  .nrv4-about-section { padding: 68px 0 54px; }
  .nrv4-about-layout { grid-template-columns: 1fr; gap: 34px; }
  .nrv4-about-copy { max-width: 640px; }
  .nrv4-about-kicker { margin-bottom: 17px; padding: 7px 13px; font-size: 10px; }
  .nrv4-about-copy h2 { font-size: clamp(34px, 8vw, 44px); }
  .nrv4-about-description { margin-top: 17px; font-size: 16px; }
  .nrv4-about-cta { min-height: 50px; margin-top: 21px; padding-inline: 19px; font-size: 14px; }
  .nrv4-about-video-frame { border-radius: 14px; }
  .nrv4-mega-tabs { grid-template-columns: 1fr; }
  .nrv4-mega-tab { display: flex; align-items: center; gap: 8px; padding: 8px; text-align: left; font-size: 12px; }
  .nrv4-mega-tab-icon { flex: 0 0 30px; width: 30px; height: 30px; margin: 0; }
  .nrv4-mega-tab-icon svg { width: 19px; }
  .nrv4-mega-tab small { font-size: 10px; }
  .nrv4-service-grid { grid-template-columns: 1fr; }
  .nrv4-service-link { min-height: 50px; }
}

@media (max-width: 920px) {
  .nrv4-search-toggle { flex: 0 0 42px; width: 42px; height: 42px; margin-left: auto; order: 2; }
  .nrv4-header-search { flex: none; width: min(100%, 620px); height: 58px; margin-left: 0; order: 0; }
  .nrv4-search-panel { min-height: 0; padding: 44px 0 36px; }
}

@media (max-width: 600px) {
  .nrv4-search-toggle { flex-basis: 38px; width: 38px; height: 38px; }
  .nrv4-search-panel { min-height: 0; padding-top: 32px; }
  .nrv4-header-search { width: calc(100% - 68px); height: 52px; }
  .nrv4-header-search svg { flex-basis: 22px; width: 22px; margin-right: 9px; }
  .nrv4-header-search input { font-size: 19px; }
  .nrv4-search-quick-links { margin: 24px 0 0 30px; }
}

/* Footer */
.nrv4-site-footer { color: #f5f9ff; background: linear-gradient(118deg, #082b59 0%, #0b376d 54%, #092956 100%); }
.nrv4-footer-container { padding-top: 58px; padding-bottom: 49px; }
.nrv4-footer-main { display: grid; grid-template-columns: 1.02fr 1fr 1.02fr; gap: clamp(34px, 6vw, 96px); padding-bottom: 48px; }
.nrv4-footer-title { width: fit-content; margin: 0 0 28px; padding-bottom: 10px; border-bottom: 2px solid #8dccff; color: #fff; font-size: 20px; font-weight: 700; line-height: 1.2; text-transform: uppercase; }
.nrv4-footer-logo { display: inline-flex; margin-bottom: 13px; }
.nrv4-footer-logo img { width: 310px; max-width: 100%; height: auto; filter: brightness(0) invert(1); }
.nrv4-footer-company address { font-size: 16px; font-style: normal; line-height: 1.8; }
.nrv4-footer-company address p, .nrv4-footer-branches p { margin: 0 0 5px; }
.nrv4-footer-company address a, .nrv4-footer-branches a { color: #ffd34f; font-weight: 700; }
.nrv4-footer-socials { display: flex; gap: 12px; margin-top: 20px; }
.nrv4-footer-socials a { display: grid; width: 46px; height: 46px; place-items: center; border: 1px solid rgba(255,255,255,.75); border-radius: 3px; color: white; transition: background .2s ease, transform .2s ease; }
.nrv4-footer-socials a:hover { transform: translateY(-2px); background: rgba(255,255,255,.13); }
.nrv4-footer-socials img { display: block; max-width: 26px; max-height: 25px; object-fit: contain; }
.nrv4-footer-support ul { display: grid; gap: 11px; margin: 47px 0 0; padding: 0; list-style: none; }
.nrv4-footer-support li { position: relative; padding-left: 24px; font-size: 15px; }
.nrv4-footer-support li::before { position: absolute; top: .35em; left: 0; width: 14px; height: 14px; border: 2px solid #8dccff; border-radius: 50%; content: ""; }
.nrv4-footer-support li::after { position: absolute; top: calc(.35em + 4px); left: 5px; width: 4px; height: 4px; border-radius: 50%; background: #8dccff; content: ""; }
.nrv4-footer-support a { color: #f5f9ff; transition: color .2s ease; }
.nrv4-footer-support a:hover { color: #9dd0ff; }
.nrv4-fanpage-card { display: grid; grid-template-columns: 58px 1fr; grid-template-rows: 1fr auto; align-items: center; gap: 10px; min-height: 196px; padding: 12px; background: #fff; color: #263b5d; font-family: Arial,sans-serif; }
.nrv4-fanpage-avatar { display: grid; width: 58px; height: 58px; place-items: center; overflow: hidden; border: 1px solid #d6dce5; }
.nrv4-fanpage-avatar img { width: 100%; height: 100%; object-fit: contain; }
.nrv4-fanpage-meta { align-self: start; padding-top: 3px; min-width: 0; }
.nrv4-fanpage-meta strong { display: block; overflow: hidden; color: #3562a1; font-size: 16px; font-weight: 400; text-overflow: ellipsis; white-space: nowrap; }
.nrv4-fanpage-meta small { display: block; margin-top: 3px; font-size: 12px; }
.nrv4-fanpage-actions { grid-column: 1 / -1; display: flex; justify-content: space-between; align-self: end; margin: 10px -12px -12px; padding: 10px 12px; border-top: 1px solid #e1e5eb; background: #f4f5f7; color: #4a5a70; font-size: 12px; }
.nrv4-fanpage-actions span { display: inline-flex; align-items: center; min-height: 30px; padding: 3px 7px; border: 1px solid #d2d6dc; border-radius: 3px; background: #fafafa; color: #4a5a70; line-height: 1.3; }
.nrv4-footer-branches { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(30px, 6vw, 96px); padding-top: 43px; border-top: 1px solid rgba(210,235,255,.8); }
.nrv4-footer-branches h3 { margin: 0 0 12px; color: #fff; font-size: 24px; line-height: 1.25; }
.nrv4-footer-branches p { font-size: 15px; line-height: 1.8; }
.nrv4-footer-bottom { border-top: 1px solid rgba(210,235,255,.6); background: rgba(0,0,0,.07); }
.nrv4-footer-bottom-inner { display: flex; min-height: 88px; align-items: center; justify-content: center; gap: 26px; }
.nrv4-footer-bottom-inner > p { margin: 0; color: #e5f1ff; font-size: 11px; font-weight: 700; letter-spacing: .08em; text-align: center; text-transform: uppercase; }
.nrv4-footer-badges { display: flex; align-items: center; gap: 15px; }
.nrv4-dmca-badge { display: block; width: 100px; height: auto; }
.nrv4-bocongthuong-badge { display: block; width: 106px; height: auto; max-height: 42px; object-fit: contain; }
@media (max-width: 760px) {
  .nrv4-footer-container { padding-top: 42px; padding-bottom: 32px; }
  .nrv4-footer-main, .nrv4-footer-branches { grid-template-columns: 1fr; gap: 30px; }
  .nrv4-footer-main { padding-bottom: 32px; }
  .nrv4-footer-title { margin-bottom: 18px; font-size: 17px; }
  .nrv4-footer-logo { margin-bottom: 10px; }
  .nrv4-footer-logo img { width: 245px; }
  .nrv4-footer-company address { font-size: 14px; }
  .nrv4-footer-socials { margin-top: 15px; }
  .nrv4-footer-socials a { width: 42px; height: 42px; }
  .nrv4-footer-support ul { gap: 10px; margin-top: 0; }
  .nrv4-footer-support li { font-size: 14px; }
  .nrv4-fanpage-card { max-width: 440px; }
  .nrv4-footer-branches { gap: 23px; padding-top: 29px; }
  .nrv4-footer-branches h3 { margin-bottom: 8px; font-size: 19px; }
  .nrv4-footer-branches p { font-size: 14px; }
  .nrv4-footer-bottom-inner { flex-direction: column; gap: 13px; padding-top: 17px; padding-bottom: 17px; }
  .nrv4-footer-bottom-inner > p { font-size: 9px; line-height: 1.6; }
  .nrv4-dmca-badge { width: 90px; }
  .nrv4-bocongthuong-badge { width: 96px; }
}

/* Shared type scale across homepage sections */
:root { --section-title-size: clamp(30px, 2.8vw, 42px); --section-copy-size: clamp(15px, 1.15vw, 17px); }
.nrv4-about-copy h2,
.nrv4-system-heading h2,
.nrv4-projects-heading h2,
.nrv4-why-heading h2,
.nrv4-testimonials-heading h2,
.nrv4-services-heading h2,
.nrv4-customers-section h2,
.nrv4-articles-heading h2,
.nrv4-social-heading h2,
.nrv4-quote-cta h2 { font-size: var(--section-title-size); }
.nrv4-about-description,
.nrv4-system-heading > p:last-child,
.nrv4-projects-heading > p:last-child,
.nrv4-why-heading > p:last-child,
.nrv4-articles-heading > p:last-child { font-size: var(--section-copy-size); }
.nrv4-project-detail p,
.nrv4-service-card p,
.nrv4-article-copy p,
.nrv4-testimonial-quote p { font-size: 15px; }
.nrv4-footer-company address,
.nrv4-footer-support li,
.nrv4-footer-branches p { font-size: 15px; }
@media (max-width: 760px) {
  :root { --section-title-size: clamp(27px, 7vw, 34px); --section-copy-size: 15px; }
  .nrv4-project-detail p,
  .nrv4-service-card p,
  .nrv4-article-copy p,
  .nrv4-testimonial-quote p,
  .nrv4-footer-company address,
  .nrv4-footer-support li,
  .nrv4-footer-branches p { font-size: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}

/* Homepage motion system */
:root {
  --motion-duration: 680ms;
  --motion-ease: cubic-bezier(.22, 1, .36, 1);
}

/* Hero entrance. These states are enabled only after script.js is running. */
.nrv4-motion-ready .nrv4-hero-background {
  opacity: .35;
  transform: translateX(-50%) scale(1.025);
  transition: opacity 900ms ease, transform 1100ms var(--motion-ease);
}
.nrv4-motion-ready .nrv4-hero-copy > * {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 620ms ease, transform 720ms var(--motion-ease);
}
.nrv4-motion-ready.page-loaded .nrv4-hero-background { opacity: 1; transform: translateX(-50%) scale(1); }
.nrv4-motion-ready.page-loaded .nrv4-hero-copy > * { opacity: 1; transform: translateY(0); }
.nrv4-motion-ready.page-loaded .nrv4-hero-copy > :nth-child(1) { transition-delay: 80ms; }
.nrv4-motion-ready.page-loaded .nrv4-hero-copy > :nth-child(2) { transition-delay: 160ms; }
.nrv4-motion-ready.page-loaded .nrv4-hero-copy > :nth-child(3) { transition-delay: 260ms; }
.nrv4-motion-ready.page-loaded .nrv4-hero-copy > :nth-child(4) { transition-delay: 350ms; }

/* Reveal all three hero text groups together, with a single light sweep on the key phrase. */
.nrv4-hero-copy.is-magic-ready .nrv4-hero-reveal-word { display: inline-block; opacity: 0; filter: blur(5px); transform: translate3d(0, 10px, 0); }
.nrv4-hero-copy.is-magic-playing .nrv4-hero-reveal-word { animation: hero-word-reveal .52s cubic-bezier(.2, .75, .25, 1) var(--reveal-delay, 0ms) both; }
.nrv4-motion-ready .nrv4-hero-copy.is-magic-ready > .nrv4-hero-kicker,
.nrv4-motion-ready .nrv4-hero-copy.is-magic-ready > h1,
.nrv4-motion-ready .nrv4-hero-copy.is-magic-ready > .nrv4-hero-description { opacity: 1; transform: none; transition: none; }
.nrv4-hero-copy.is-magic-playing .nrv4-hero-growth-highlight::after { position: absolute; inset: 0; background: linear-gradient(100deg, transparent 42%, rgba(255,255,255,.62) 50%, transparent 58%) 100% center / 250% 100% no-repeat; content: ""; pointer-events: none; animation: hero-shine-sweep .58s ease-in-out 1.08s both; }
@keyframes hero-word-reveal {
  from { opacity: 0; filter: blur(5px); transform: translate3d(0, 10px, 0); }
  to { opacity: 1; filter: blur(0); transform: none; }
}
@keyframes hero-shine-sweep {
  from { background-position: 100% center; }
  to { background-position: 0 center; }
}

/* Reusable scroll reveal states. */
.nrv4-motion-ready [data-reveal] {
  opacity: 0;
  transform: translate3d(0, 26px, 0);
  transition:
    opacity var(--motion-duration) ease,
    transform var(--motion-duration) var(--motion-ease);
  transition-delay: var(--reveal-delay, 0ms);
}
.nrv4-motion-ready [data-reveal="left"] { transform: translate3d(-34px, 0, 0); }
.nrv4-motion-ready [data-reveal="right"] { transform: translate3d(34px, 0, 0); }
.nrv4-motion-ready [data-reveal="scale"] { transform: scale(.965); }
.nrv4-motion-ready [data-reveal].nrv4-is-visible { opacity: 1; transform: none; }

/* The five-pillar diagram tells its story in sequence. */
.nrv4-motion-ready .nrv4-system-diagram[data-reveal] .nrv4-system-connectors > path {
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
}
.nrv4-motion-ready .nrv4-system-diagram[data-reveal] .nrv4-pillar-card {
  opacity: 0;
}
.nrv4-motion-ready .nrv4-system-diagram[data-reveal] .nrv4-pillar-card { transform: scale(.94); }
.nrv4-motion-ready .nrv4-system-diagram.nrv4-is-visible .nrv4-pillar-card {
  animation: system-node-in 620ms var(--motion-ease) forwards;
}
.nrv4-motion-ready .nrv4-system-diagram.nrv4-is-visible .nrv4-tree-content { animation-delay: 120ms; }
.nrv4-motion-ready .nrv4-system-diagram.nrv4-is-visible .nrv4-tree-seo { animation-delay: 340ms; }
.nrv4-motion-ready .nrv4-system-diagram.nrv4-is-visible .nrv4-tree-website { animation-delay: 410ms; }
.nrv4-motion-ready .nrv4-system-diagram.nrv4-is-visible .nrv4-tree-ads { animation-delay: 480ms; }
.nrv4-motion-ready .nrv4-system-diagram.nrv4-is-visible .nrv4-tree-crm { animation-delay: 720ms; }
.nrv4-motion-ready .nrv4-system-diagram.nrv4-is-visible .nrv4-system-connectors > path {
  animation: system-line-draw 520ms ease-out forwards;
}
.nrv4-motion-ready .nrv4-system-diagram.nrv4-is-visible .nrv4-system-connectors > path:nth-of-type(1) { animation-delay: 430ms; }
.nrv4-motion-ready .nrv4-system-diagram.nrv4-is-visible .nrv4-system-connectors > path:nth-of-type(2) { animation-delay: 480ms; }
.nrv4-motion-ready .nrv4-system-diagram.nrv4-is-visible .nrv4-system-connectors > path:nth-of-type(3) { animation-delay: 540ms; }
.nrv4-motion-ready .nrv4-system-diagram.nrv4-is-visible .nrv4-system-connectors > path:nth-of-type(4) { animation-delay: 590ms; }
.nrv4-motion-ready .nrv4-system-diagram.nrv4-is-visible .nrv4-system-connectors > path:nth-of-type(5) { animation-delay: 640ms; }
.nrv4-motion-ready .nrv4-system-diagram.nrv4-is-visible .nrv4-system-connectors > path:nth-of-type(6) { animation-delay: 830ms; }

@keyframes system-line-draw { to { stroke-dashoffset: 0; } }
@keyframes system-node-in { to { opacity: 1; transform: scale(1); } }
@keyframes mobile-menu-in {
  from { opacity: 0; transform: translateY(-16px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes mobile-menu-out {
  from { opacity: 1; transform: translateY(0); }
  to { opacity: 0; transform: translateY(-16px); }
}
@keyframes mobile-submenu-in {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes mobile-submenu-out {
  from { opacity: 1; transform: translateY(0); }
  to { opacity: 0; transform: translateY(-10px); }
}
@keyframes dropdown-in {
  from { opacity: 0; transform: translateY(7px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes mega-menu-in {
  from { opacity: 0; transform: translate(-50%, 7px); }
  to { opacity: 1; transform: translate(-50%, 0); }
}
@keyframes cta-glow {
  0% { box-shadow: 0 10px 22px rgba(8,120,249,.2); }
  50% { box-shadow: 0 12px 34px rgba(72,174,255,.42); }
  100% { box-shadow: 0 10px 22px rgba(8,120,249,.2); }
}

.nrv4-motion-ready .nrv4-quote-cta-inner.nrv4-is-visible .nrv4-quote-cta-button:first-child {
  animation: cta-glow 1200ms ease 520ms 1 both;
}

/* Refined hover motion: animate details without lifting whole cards. */
.nrv4-button > span { transition: transform .2s ease; }
.nrv4-button:hover > span { transform: translateX(4px); }
.nrv4-service-card:hover,
.nrv4-article-card:hover { transform: none; }
.nrv4-customer-logo:hover { transform: none; }
.nrv4-project-visual svg { transition: transform .4s var(--motion-ease); }
.nrv4-project-card:hover .nrv4-project-visual svg { transform: scale(1.025); }
.nrv4-project-card:hover .nrv4-project-thumbnail { transform: scale(1.025); }

@media (min-width: 921px) {
  .nrv4-project-copy .nrv4-project-detail-button { display: none; }
  .nrv4-project-visual::after { position: absolute; z-index: 1; inset: 0; background: rgba(6, 31, 72, .52); content: ""; opacity: 0; pointer-events: none; transition: opacity .25s ease; }
  .nrv4-project-image-action { position: absolute; z-index: 2; top: 50%; left: 50%; display: inline-flex; width: max-content; max-width: calc(100% - 32px); min-height: 46px; padding: 0 20px; font-size: 14px; white-space: nowrap; opacity: 0; pointer-events: none; transform: translate(-50%, calc(-50% + 10px)); transition: opacity .25s ease, transform .25s ease, box-shadow .2s ease, background-color .2s ease; }
  .nrv4-project-card:hover .nrv4-project-visual::after,
  .nrv4-project-card:focus-within .nrv4-project-visual::after { opacity: 1; }
  .nrv4-project-card:hover .nrv4-project-image-action,
  .nrv4-project-card:focus-within .nrv4-project-image-action { opacity: 1; pointer-events: auto; transform: translate(-50%, -50%); }
  .nrv4-project-card.is-preview-dismissed .nrv4-project-visual::after,
  .nrv4-project-card.is-preview-dismissed .nrv4-project-image-action { opacity: 0; pointer-events: none; }
  .nrv4-nav-item:hover > .nrv4-dropdown-panel,
  .nrv4-nav-item:focus-within > .nrv4-dropdown-panel,
  .nrv4-nav-item.nrv4-is-open > .nrv4-dropdown-panel,
  .nrv4-nested-item:hover > .nrv4-nested-panel,
  .nrv4-nested-item:focus-within > .nrv4-nested-panel,
  .nrv4-nested-item.nrv4-is-open > .nrv4-nested-panel { animation: dropdown-in 180ms var(--motion-ease) both; }
  .nrv4-nav-item:hover > .nrv4-mega-menu,
  .nrv4-nav-item:focus-within > .nrv4-mega-menu,
  .nrv4-nav-item.nrv4-is-open > .nrv4-mega-menu { animation: mega-menu-in 210ms var(--motion-ease) both; }
}

@media (max-width: 760px) {
  .nrv4-motion-ready [data-reveal],
  .nrv4-motion-ready [data-reveal="left"],
  .nrv4-motion-ready [data-reveal="right"] { transform: translate3d(0, 18px, 0); }
  .nrv4-motion-ready [data-reveal="scale"] { transform: scale(.98); }
  .nrv4-motion-ready [data-reveal].nrv4-is-visible { transform: none; }
  .nrv4-motion-ready .nrv4-hero-copy > * { transform: translateY(17px); }
}

@media (prefers-reduced-motion: reduce) {
  .nrv4-motion-ready .nrv4-hero-background,
  .nrv4-motion-ready .nrv4-hero-copy > *,
  .nrv4-motion-ready [data-reveal],
  .nrv4-motion-ready .nrv4-system-diagram[data-reveal] .nrv4-pillar-card {
    opacity: 1 !important;
    transform: none !important;
  }
  .nrv4-motion-ready .nrv4-system-diagram[data-reveal] .nrv4-system-connectors > path { stroke-dashoffset: 0 !important; }
}

/* Refined type scale: keep navigation readable while reducing oversized content. */
:root {
  --section-title-size: clamp(26px, 2.35vw, 35px);
  --section-copy-size: clamp(14px, 1vw, 15px);
}
.nrv4-hero h1 { font-size: clamp(36px, 3.9vw, 56px); line-height: 1.06; }
.nrv4-hero-description { font-size: clamp(15px, 1.3vw, 17px); }
.nrv4-about-description { font-size: var(--section-copy-size); }
.nrv4-pillar-card h3 { font-size: clamp(14px, 1vw, 16px); }
.nrv4-pillar-card p { font-size: clamp(10px, .8vw, 12px); }
.nrv4-project-copy h3 { font-size: clamp(18px, 1.5vw, 23px); }
.nrv4-why-item h3 { font-size: clamp(17px, 1.4vw, 21px); }
.nrv4-why-item p { font-size: 15px; }
.nrv4-service-card h3 { font-size: clamp(17px, 1.25vw, 20px); }
.nrv4-article-copy h3 { font-size: clamp(15px, 1.2vw, 18px); }
.nrv4-quote-cta-support { font-size: clamp(15px, 1.45vw, 19px); }
.nrv4-quote-cta-button { min-width: 220px; min-height: 58px; font-size: 19px; }
.nrv4-footer-title { font-size: 17px; }
.nrv4-footer-branches h3 { font-size: 20px; }

@media (max-width: 760px) {
  :root {
    --section-title-size: clamp(24px, 6vw, 29px);
    --section-copy-size: 14px;
  }
  .nrv4-hero h1 { font-size: clamp(32px, 8.5vw, 40px); }
  .nrv4-hero-description { font-size: 15px; }
  .nrv4-pillar-card h3 { font-size: 14px; }
  .nrv4-project-copy h3 { font-size: 18px; }
  .nrv4-quote-cta-button { min-width: 210px; min-height: 56px; font-size: 18px; }
  .nrv4-footer-branches h3 { font-size: 18px; }
}

/* Compact mobile layout after device-width review. */
@media (max-width: 600px) {
  .nrv4-highlight-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); padding-block: 6px; }
  .nrv4-highlight-item,
  .nrv4-highlight-item:first-child,
  .nrv4-highlight-item:nth-child(3),
  .nrv4-highlight-item:last-child { min-height: 78px; gap: 7px; padding: 9px 7px; border-right: 0; border-bottom: 1px solid #e6eef8; }
  .nrv4-highlight-item:nth-child(odd) { border-right: 1px solid #e6eef8; }
  .nrv4-highlight-item:nth-last-child(-n + 2) { border-bottom: 0; }
  .nrv4-highlight-icon { flex-basis: 34px; width: 34px; }
  .nrv4-highlight-icon svg { width: 31px; }
  .nrv4-highlight-item strong { font-size: 12px; line-height: 1.25; }
  .nrv4-highlight-item small { font-size: 10px; line-height: 1.3; }

  .nrv4-system-diagram { gap: 20px; }
  .nrv4-pillar-card { min-height: 100px; padding: 9px 12px; }
  .nrv4-pillar-card:not(.nrv4-tree-crm)::after { top: calc(100% + 1px); font-size: 20px; line-height: 20px; }

  .nrv4-projects-section { padding-bottom: 56px; }
  .nrv4-projects-grid { gap: 12px; }
  .nrv4-project-card { gap: 10px; padding: 10px; }
  .nrv4-project-visual { height: 160px; aspect-ratio: auto; }
  .nrv4-project-copy { padding: 0 3px 5px; }
  .nrv4-project-category { min-height: 29px; font-size: 11px; }
  .nrv4-project-copy h3 { margin-block: 8px 9px; font-size: 17px; }
  .nrv4-project-detail { margin-top: 7px; }
  .nrv4-project-detail strong { font-size: 12px; }
  .nrv4-project-detail p { font-size: 13px; line-height: 1.4; }

  .nrv4-services-section { padding-block: 50px 54px; }
  .nrv4-services-grid { grid-template-columns: 1fr; gap: 12px; }
  .nrv4-service-card { height: 240px; padding: 0; }
  .nrv4-service-card-face { padding: 14px 18px; }
  .nrv4-service-card-icon { width: 58px; height: 58px; flex-basis: 58px; border-radius: 11px; }
  .nrv4-service-card-icon svg { width: 35px; height: 35px; }
  .nrv4-service-card-icon .material-symbols-rounded { font-size: 34px; }
  .nrv4-service-card h3 { margin-top: 9px; font-size: 18px; line-height: 1.25; }
  .nrv4-service-card p { margin-top: 6px; font-size: 14px; line-height: 1.45; }

  .nrv4-articles-section { padding-block: 50px 54px; }
  .nrv4-articles-grid { gap: 11px; }
  .nrv4-article-card { display: grid; grid-template-columns: 108px minmax(0, 1fr); gap: 11px; align-items: stretch; padding: 10px; }
  .nrv4-article-visual { width: 108px; height: 100%; min-height: 150px; aspect-ratio: auto; }
  .nrv4-article-visual svg { object-fit: cover; }
  .nrv4-article-copy { min-width: 0; padding: 2px 0; }
  .nrv4-article-category { min-height: 25px; padding-inline: 9px; font-size: 11px; }
  .nrv4-article-copy h3 { margin-top: 7px; font-size: 14px; line-height: 1.3; }
  .nrv4-article-copy p { margin-top: 5px; font-size: 12px; line-height: 1.4; }
  .nrv4-article-meta { gap: 3px 8px; padding-top: 8px; font-size: 10px; }
  .nrv4-article-meta span, .nrv4-article-meta time { gap: 4px; }
  .nrv4-article-meta .material-symbols-rounded { font-size: 12px; }
  .nrv4-articles-all { width: 100%; justify-content: center; }
}

/* Search panel overrides after compact navigation rules. */
@media (max-width: 600px) {
  .nrv4-header-search { flex: none; width: 100%; height: 52px; margin-left: 0; order: 0; }
}

/* On tablet and mobile the hero image is full-width, so it must not inherit the desktop entrance offset. */
@media (max-width: 920px) {
  .nrv4-motion-ready .nrv4-hero-background,
  .nrv4-motion-ready.page-loaded .nrv4-hero-background { transform: none; }
}

/* Customer logo carousel: 15 logos per Swiper page. */
.nrv4-customer-swiper { display: block; height: 340px; overflow: hidden; cursor: grab; touch-action: pan-y; }
.nrv4-customer-swiper:active { cursor: grabbing; }
.nrv4-customer-swiper .swiper-wrapper { display: flex; width: 100%; height: 100%; }
.nrv4-customer-swiper .swiper-slide { height: 100%; }
.nrv4-customer-logo-grid { display: grid; height: 100%; grid-template-columns: repeat(5, minmax(0, 1fr)); grid-template-rows: repeat(3, 104px); gap: 14px 24px; align-items: center; }
.nrv4-customer-logo-grid .nrv4-customer-logo { display: flex; min-width: 0; min-height: 0; align-items: center; justify-content: center; padding: 8px; }
.nrv4-customer-logo-grid .nrv4-customer-logo img { display: block; width: min(100%, 210px); max-height: 78px; object-fit: contain; }
.nrv4-customer-swiper:not(.swiper-initialized) .swiper-wrapper { display: flex !important; width: 100%; }
.nrv4-customer-swiper:not(.swiper-initialized) .swiper-slide { flex: 0 0 100%; }

@media (max-width: 920px) {
  .nrv4-customer-swiper { height: 302px; }
  .nrv4-customer-logo-grid { grid-template-rows: repeat(3, 94px); gap: 10px 16px; }
  .nrv4-customer-logo-grid .nrv4-customer-logo img { max-height: 70px; }
}

@media (max-width: 640px) {
  .nrv4-customer-swiper { height: 254px; }
  .nrv4-customer-logo-grid { grid-template-rows: repeat(3, 82px); gap: 4px 8px; }
  .nrv4-customer-logo-grid .nrv4-customer-logo { padding: 7px 4px; }
  .nrv4-customer-logo-grid .nrv4-customer-logo img { max-height: 62px; }
}

/* Keep the homepage sections closer together. */
.nrv4-about-section { padding-block: 64px 58px; }
.nrv4-projects-section { padding-block: 58px 64px; }
.nrv4-why-section { padding-block: 64px 68px; }
.nrv4-testimonials-section { padding-block: 62px 66px; }
.nrv4-services-section { padding-block: 64px 62px; }
.nrv4-customers-section { padding-top: 54px; }
.nrv4-articles-section { padding-block: 58px 62px; }
.nrv4-social-section { padding-block: 54px 48px; }

@media (max-width: 920px) {
  .nrv4-about-section, .nrv4-projects-section, .nrv4-why-section, .nrv4-testimonials-section,
  .nrv4-services-section, .nrv4-articles-section { padding-block: 52px 58px; }
  .nrv4-customers-section, .nrv4-social-section { padding-top: 48px; }
}

@media (max-width: 600px) {
  .nrv4-search-close { right: 0; }
  .nrv4-about-section, .nrv4-projects-section, .nrv4-why-section, .nrv4-testimonials-section,
  .nrv4-services-section, .nrv4-articles-section { padding-block: 42px 48px; }
  .nrv4-customers-section, .nrv4-social-section { padding-top: 40px; }
  .nrv4-system-diagram { display: grid; width: 100%; max-width: 600px; aspect-ratio: 600 / 930; min-height: 0; grid-template-columns: repeat(3, minmax(0, 1fr)); grid-template-rows: 220fr 145fr 250fr 110fr 205fr; row-gap: 0; column-gap: clamp(4px, 1.4vw, 10px); }
  .nrv4-system-connectors-mobile { position: absolute; z-index: 0; inset: 0; display: block; width: 100%; height: 100%; overflow: visible; fill: none; pointer-events: none; }
  .nrv4-system-connectors-mobile .nrv4-connector-line { stroke: #dbe2eb; stroke-width: 3; }
  .nrv4-system-connectors-mobile .nrv4-connector-arrow { stroke: #1970c7; stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }
  .nrv4-system-diagram .nrv4-pillar-card { width: 100%; min-height: 0; padding: clamp(7px, 1.6vw, 14px) clamp(3px, 1vw, 10px); border-radius: clamp(14px, 4vw, 26px); box-shadow: 0 12px 24px rgba(22, 52, 87, .11); }
  .nrv4-system-diagram .nrv4-pillar-card:not(.nrv4-tree-crm)::after { display: none; }
  .nrv4-system-diagram .nrv4-tree-content { grid-column: 2; grid-row: 1; width: 145%; justify-self: center; }
  .nrv4-system-diagram .nrv4-tree-seo { grid-column: 1; grid-row: 3; }
  .nrv4-system-diagram .nrv4-tree-website { grid-column: 2; grid-row: 3; }
  .nrv4-system-diagram .nrv4-tree-ads { grid-column: 3; grid-row: 3; }
  .nrv4-system-diagram .nrv4-tree-crm { grid-column: 2; grid-row: 5; width: 170%; justify-self: center; }
  .nrv4-system-diagram .nrv4-pillar-number { font-size: clamp(9px, 2.8vw, 18px); }
  .nrv4-system-diagram .nrv4-pillar-icon, .nrv4-system-diagram .nrv4-tree-website .nrv4-pillar-icon, .nrv4-system-diagram .nrv4-tree-seo .nrv4-pillar-icon { width: clamp(23px, 7vw, 43px); height: clamp(23px, 7vw, 43px); margin: clamp(4px, 1.4vw, 9px) 0; }
  .nrv4-system-diagram .nrv4-pillar-card h3 { font-size: clamp(9px, 3vw, 18px); line-height: 1.3; }
  .nrv4-system-diagram .nrv4-pillar-card p { margin-top: clamp(3px, 1vw, 8px); font-size: clamp(8px, 2vw, 13px); line-height: 1.3; }
}

/* Quick contact links stay within reach while scrolling. */
.nrv4-floating-contact {
  position: fixed;
  z-index: 95;
  left: 20px;
  bottom: max(20px, env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  transition: opacity .2s ease;
}
.nrv4-floating-contact a { display: inline-flex; align-items: center; justify-content: center; gap: 5px; color: #fff; font-size: 13px; font-weight: 700; line-height: 1; box-shadow: 0 3px 10px rgba(9, 37, 76, .18); }
.nrv4-floating-contact a:focus-visible { outline: 2px solid #123d7a; outline-offset: 3px; }
.nrv4-floating-contact svg { width: 15px; height: 15px; flex: none; }
.nrv4-floating-contact-messenger { width: 42px; height: 42px; border-radius: 50%; background: #1877f2; }
.nrv4-floating-contact .nrv4-floating-contact-messenger svg { width: 25px; height: 25px; }
.nrv4-floating-contact-zalo, .nrv4-floating-contact-phone { min-height: 36px; padding: 0 12px; border-radius: 999px; }
.nrv4-floating-contact-zalo { background: #0878f9; }
.nrv4-floating-contact-zalo svg { fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.nrv4-floating-contact-phone { background: #cc1f2c; }
body.nrv4-search-is-open .nrv4-floating-contact, body.menu-is-open .nrv4-floating-contact { opacity: 0; pointer-events: none; }

@media (max-width: 600px) {
  .nrv4-floating-contact { left: 12px; bottom: max(14px, env(safe-area-inset-bottom)); }
  .nrv4-floating-contact-messenger { width: 44px; height: 44px; }
  .nrv4-floating-contact-zalo, .nrv4-floating-contact-phone { min-height: 38px; }
}

.nrv4-back-to-top {
  position: fixed;
  z-index: 95;
  right: 20px;
  bottom: max(140px, env(safe-area-inset-bottom));
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 0;
  border-radius: 12px;
  background: var(--blue);
  color: #fff;
  box-shadow: 0 5px 18px rgba(0, 105, 235, .25);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity .2s ease, transform .2s ease, visibility .2s ease;
  pointer-events: none;
}
.nrv4-back-to-top.nrv4-is-visible { opacity: 1; visibility: visible; transform: translateY(0); pointer-events: auto; }
.nrv4-back-to-top svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.nrv4-back-to-top:focus-visible { outline: 2px solid var(--navy-deep); outline-offset: 3px; }
body.nrv4-search-is-open .nrv4-back-to-top, body.menu-is-open .nrv4-back-to-top { opacity: 0; pointer-events: none; }

@media (max-width: 600px) {
  .nrv4-back-to-top { right: 12px; width: 44px; height: 44px; }
}

/* Social links and language selector in the shared header. */
.nrv4-utility-bar { position: relative; z-index: 30; overflow: visible; }
.nrv4-site-header.header-is-condensed .nrv4-utility-bar { overflow: hidden; }
.nrv4-utility-links { gap: 14px; }
.nrv4-header-socials { display: flex; align-items: center; gap: 5px; }
.nrv4-header-socials a { display: inline-flex; width: 22px; height: 24px; align-items: center; justify-content: center; padding: 0; }
.nrv4-header-socials img, .nrv4-header-socials svg { display: block; width: 18px; height: 18px; object-fit: contain; }
.nrv4-header-socials svg { fill: none; stroke: currentColor; stroke-width: 1.8; color: #fff; }
.nrv4-header-language { display: flex; align-items: center; gap: 6px; font-family: Arial, sans-serif; font-size: 13px; }
.nrv4-header-language a { display: inline-flex; align-items: center; justify-content: center; line-height: 1; }
.nrv4-header-language img { display: block; width: 24px; height: 24px; object-fit: contain; }
.nrv4-mobile-header-tools { display: none; }
@media (max-width: 920px) {
  .nrv4-mobile-header-tools { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; padding: 16px 3px; }
  .nrv4-mobile-header-tools .nrv4-header-socials a { width: 30px; height: 30px; }
  .nrv4-mobile-header-tools .nrv4-header-socials svg { color: #0b315f; }
}

@media (max-width: 600px) {
  .nrv4-quote-cta-actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
  .nrv4-quote-cta-button { width: 100%; min-width: 0; min-height: 50px; gap: 6px; padding: 10px 5px; font-size: clamp(12px, 3.5vw, 16px); white-space: nowrap; }
  .nrv4-quote-cta-button svg { flex: 0 0 18px; width: 18px; height: 18px; }
}