/* International Open Sky — giao diện hiện đại: kính mờ, viền gradient, bento, xen kẽ nền trắng và navy */
@property --ang { syntax: "<angle>"; initial-value: 0deg; inherits: false; }
:root {
  --navy: #031030; --navy2: #061a44; --brand: #003a80;
  --sky: #1aa7ec; --sky2: #5cc8ff; --royal: #2f6bff;
  --ink: #0b1f44; --muted: #52668a; --paper: #f5f8fe; --paper2: #eaf1fb;
  --d-ink: #eef5ff; --d-muted: #a9bcd9;
  --grad: linear-gradient(120deg, #1aa7ec 0%, #2f6bff 100%);
  --pad: max(calc((100vw - 1200px) / 2), 22px);
  --head: "Sora", system-ui, sans-serif;
  --body: "Inter", system-ui, sans-serif;
  --r: 24px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--navy); color: var(--ink); font-family: var(--body); font-size: 16.5px; line-height: 1.65; -webkit-font-smoothing: antialiased; overflow-x: hidden; }
h1, h2, h3, p { margin: 0; }
a { color: inherit; text-decoration: none; }
svg { fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
img { display: block; max-width: 100%; }
.wrap { position: relative; width: min(1200px, 100% - 44px); margin: 0 auto; }
.center { text-align: center; display: flex; flex-direction: column; align-items: center; }
section[id] { scroll-margin-top: 76px; }
.spark, .bgfx.plex { display: none; }

/* thanh tiến trình cuộn */
.progress { position: fixed; top: 0; left: 0; right: 0; height: 3px; z-index: 60; transform: scaleX(0); transform-origin: left; background: var(--grad); box-shadow: 0 0 14px rgba(26, 167, 236, 0.8); }

/* ===== nav ===== */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 50; display: flex; align-items: center; justify-content: space-between; height: 76px; padding: 0 var(--pad); background: rgba(255, 255, 255, 0.82); backdrop-filter: blur(18px) saturate(1.6); -webkit-backdrop-filter: blur(18px) saturate(1.6); border-bottom: 1px solid rgba(10, 60, 130, 0.08); transition: height 0.3s, box-shadow 0.3s, background 0.3s; }
.nav.scrolled { height: 64px; background: rgba(255, 255, 255, 0.94); box-shadow: 0 12px 34px -18px rgba(3, 30, 80, 0.45); }
.logo img { height: 44px; width: auto; transition: height 0.3s; }
.nav.scrolled .logo img { height: 38px; }
.links { display: flex; gap: 6px; padding: 5px; border-radius: 999px; background: rgba(10, 60, 130, 0.05); }
.links a { position: relative; padding: 9px 20px; border-radius: 999px; font-size: 14.5px; font-weight: 500; color: #36517d; transition: color 0.25s, background 0.25s, box-shadow 0.25s; }
.links a:hover { color: var(--brand); }
.links a.on { color: #fff; background: var(--brand); box-shadow: 0 8px 20px -8px rgba(0, 58, 128, 0.7); }
.burger { display: none; width: 46px; height: 46px; border-radius: 14px; border: 1px solid #cfe0f0; background: #fff; cursor: pointer; flex-direction: column; align-items: center; justify-content: center; gap: 5px; }
.burger span { width: 20px; height: 2px; border-radius: 2px; background: var(--brand); transition: transform 0.25s, opacity 0.25s; }
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== hero ===== */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; padding: 130px var(--pad) 100px; overflow: hidden; isolation: isolate; background: radial-gradient(1000px 600px at 82% 35%, rgba(26, 120, 230, 0.35), transparent 70%), radial-gradient(700px 500px at 5% 0%, rgba(47, 107, 255, 0.22), transparent 70%), linear-gradient(180deg, #020c26 0%, #04184a 100%); }
.hero-globe { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -2; opacity: 0; transition: opacity 1.6s ease 0.3s; }
.ready .hero-globe { opacity: 1; }
.hero::before { content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none; background: radial-gradient(500px 500px at var(--mx, 30%) var(--my, 40%), rgba(92, 200, 255, 0.14), transparent 70%); }
.hero::after { content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none; background: linear-gradient(90deg, rgba(2, 12, 38, 0.82) 0%, rgba(2, 12, 38, 0.4) 38%, transparent 62%), linear-gradient(0deg, #031030 0%, transparent 14%); }
.hero-copy { position: relative; max-width: 700px; }
.hero-kicker { display: inline-flex; align-items: center; gap: 10px; padding: 9px 18px 9px 14px; border-radius: 999px; font-size: 13px; font-weight: 600; letter-spacing: 0.22em; color: #bfe6ff; background: rgba(255, 255, 255, 0.07); border: 1px solid rgba(255, 255, 255, 0.16); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); opacity: 0; transform: translateY(14px); transition: opacity 0.8s, transform 0.8s; }
.hero-kicker::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--sky2); box-shadow: 0 0 0 4px rgba(92, 200, 255, 0.25), 0 0 14px var(--sky2); animation: beat 2.4s ease-in-out infinite; }
@keyframes beat { 0%, 100% { box-shadow: 0 0 0 3px rgba(92, 200, 255, 0.25), 0 0 8px var(--sky2); } 50% { box-shadow: 0 0 0 8px rgba(92, 200, 255, 0.08), 0 0 20px var(--sky2); } }
.hero h1 { margin-top: 26px; font-family: var(--head); font-weight: 700; line-height: 1.02; letter-spacing: -0.035em; color: #fff; font-size: clamp(44px, 7.4vw, 100px); }
.hero h1 span { display: block; opacity: 0; transform: translateY(40px); filter: blur(10px); transition: opacity 1s cubic-bezier(.2, .7, .2, 1), transform 1s cubic-bezier(.2, .7, .2, 1), filter 1s; }
.hero h1 span:nth-child(2) { transition-delay: 0.14s; }
.grad { background: linear-gradient(100deg, #1aa7ec, #7fd6ff 40%, #2f6bff 70%, #1aa7ec); background-size: 220% auto; -webkit-background-clip: text; background-clip: text; color: transparent; animation: shimmer 9s linear infinite; }
@keyframes shimmer { to { background-position: -220% center; } }
.hero-sub { margin-top: 30px; max-width: 590px; font-size: clamp(16px, 1.5vw, 19px); line-height: 1.75; color: #c5d6f0; opacity: 0; transform: translateY(20px); transition: opacity 1s 0.3s, transform 1s 0.3s; }
.ready .hero-kicker, .ready .hero-sub { opacity: 1; transform: none; }
.ready .hero h1 span { opacity: 1; transform: none; filter: blur(0); }

/* ===== chung ===== */
.sec { position: relative; padding: 130px 0; overflow: hidden; isolation: isolate; }
.eyebrow { display: inline-flex; align-items: center; gap: 12px; font-size: 13px; font-weight: 600; letter-spacing: 0.2em; color: var(--sky); }
.eyebrow::before { content: ""; width: 28px; height: 2px; border-radius: 2px; background: var(--grad); }
.center .eyebrow::after { content: ""; width: 28px; height: 2px; border-radius: 2px; background: var(--grad); }
.sec-title { margin-top: 18px; font-family: var(--head); font-size: clamp(34px, 4.6vw, 62px); font-weight: 700; line-height: 1.08; letter-spacing: -0.03em; text-wrap: balance; }
.tagline { margin-top: 24px; font-size: clamp(18px, 1.8vw, 22px); line-height: 1.55; font-weight: 500; max-width: 760px; text-wrap: pretty; }
.center .tagline { margin-left: auto; margin-right: auto; }
.body { margin-top: 18px; font-size: 16.5px; line-height: 1.8; max-width: 760px; text-wrap: pretty; }
.center .body { margin-left: auto; margin-right: auto; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: center; }
.chip { display: inline-grid; place-items: center; width: 54px; height: 54px; border-radius: 17px; color: #fff; background: var(--grad); box-shadow: 0 14px 30px -12px rgba(26, 120, 230, 0.8), inset 0 1px 0 rgba(255, 255, 255, 0.4); flex: none; transition: transform 0.4s cubic-bezier(.2, .7, .2, 1); }
.chip svg { width: 26px; height: 26px; }
.card:hover .chip, .tile:hover .chip { transform: scale(1.1) rotate(-6deg); }

/* thẻ: kính mờ + viền gradient + đèn rọi theo con trỏ */
.card, .tile { position: relative; border-radius: var(--r); transition: transform 0.45s cubic-bezier(.2, .7, .2, 1), box-shadow 0.4s; transform-style: preserve-3d; }
.card::before, .tile::before { content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px; pointer-events: none; background: linear-gradient(135deg, rgba(26, 167, 236, 0.75), rgba(255, 255, 255, 0.06) 42%, rgba(47, 107, 255, 0.55)); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask: linear-gradient(#000 0 0) content-box exclude, linear-gradient(#000 0 0); mask-composite: exclude; }
.card::after, .tile::after { content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none; opacity: 0; background: radial-gradient(360px circle at var(--mx, 50%) var(--my, 50%), rgba(92, 200, 255, 0.2), transparent 70%); transition: opacity 0.35s; }
.card:hover::after, .tile:hover::after { opacity: 1; }

/* hiện dần khi cuộn: mờ -> rõ, trượt lên */
.reveal { opacity: 0; transform: translateY(34px) scale(0.985); filter: blur(8px); transition: opacity 0.9s cubic-bezier(.2, .7, .2, 1) var(--d, 0s), transform 0.9s cubic-bezier(.2, .7, .2, 1) var(--d, 0s), filter 0.9s var(--d, 0s); }
.reveal.in { opacity: 1; transform: none; filter: blur(0); }

/* ----- phần tối ----- */
.hero, .ai, .provide, .bms, .stats, .foot { color: var(--d-ink); }
.ai, .provide, .bms { background: radial-gradient(900px 520px at 85% 0%, rgba(26, 120, 230, 0.3), transparent 70%), radial-gradient(700px 480px at 0% 100%, rgba(47, 107, 255, 0.2), transparent 70%), linear-gradient(180deg, #04164a, #031030); }
.ai .tagline, .provide .tagline, .bms .tagline { color: #e6f1ff; }
.ai .body, .provide .body, .bms .body { color: var(--d-muted); }
.ai .sec-title, .provide .sec-title, .bms .sec-title { color: #fff; }
.ai::before, .provide::before, .bms::before { content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none; background-image: linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px); background-size: 64px 64px; -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000, transparent 80%); mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000, transparent 80%); }
.ai .card, .provide .tile, .bms .card { background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.025)); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); box-shadow: 0 24px 60px -34px rgba(0, 0, 0, 0.8), inset 0 1px 0 rgba(255, 255, 255, 0.1); }

/* ----- phần sáng ----- */
.light { background: var(--paper); color: var(--ink); }
.light::before { content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none; background: radial-gradient(520px 380px at 8% 12%, rgba(26, 167, 236, 0.2), transparent 70%), radial-gradient(620px 440px at 96% 60%, rgba(47, 107, 255, 0.14), transparent 70%); animation: drift 22s ease-in-out infinite alternate; }
@keyframes drift { from { transform: translate3d(-2%, -1%, 0) scale(1); } to { transform: translate3d(2%, 2%, 0) scale(1.06); } }
.light .eyebrow { color: #0b86cc; }
.light .sec-title { color: var(--ink); }
.light .tagline { color: #143a70; }
.light .body { color: var(--muted); }
.light .card { background: rgba(255, 255, 255, 0.86); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); box-shadow: 0 24px 50px -30px rgba(10, 60, 130, 0.4), inset 0 1px 0 #fff; }
.light .card:hover { box-shadow: 0 34px 70px -30px rgba(10, 90, 190, 0.5), inset 0 1px 0 #fff; }
.light .card h3 { color: var(--ink); }
.light .card p { color: var(--muted); }

/* ===== about ===== */
.about-wrap { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 72px; align-items: center; }
.about-head { text-align: left; }
.about-lead { margin-top: 26px; font-size: clamp(18px, 1.9vw, 22px); line-height: 1.75; color: #1d3a66; text-wrap: pretty; }
.vm { display: grid; grid-template-columns: 1fr; gap: 22px; }
.vm-card { padding: 34px 32px 38px; display: flex; flex-direction: column; gap: 14px; align-items: flex-start; }
.vm-card h3 { font-family: var(--head); font-size: 26px; font-weight: 700; letter-spacing: -0.02em; }
.vm-card p { font-size: 16.5px; line-height: 1.75; }

/* ===== AI ===== */
.ai-visual { position: relative; aspect-ratio: 1 / 0.95; border-radius: 32px; background: radial-gradient(closest-side at 50% 48%, rgba(26, 140, 240, 0.22), transparent 80%), rgba(4, 16, 46, 0.7); box-shadow: 0 50px 100px -50px rgba(26, 120, 230, 0.7), inset 0 1px 0 rgba(255, 255, 255, 0.1); }
.ai-visual::before { content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1.5px; pointer-events: none; z-index: 3; background: conic-gradient(from var(--ang), rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0.08) 55%, #5cc8ff 75%, #2f6bff 88%, rgba(255, 255, 255, 0.08) 100%); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask: linear-gradient(#000 0 0) content-box exclude, linear-gradient(#000 0 0); mask-composite: exclude; animation: spin 7s linear infinite; }
@keyframes spin { to { --ang: 360deg; } }
.ai-visual canvas { position: absolute; inset: 0; width: 100%; height: 100%; border-radius: inherit; }
.orb { position: absolute; z-index: 2; display: grid; place-items: center; width: 56px; height: 56px; border-radius: 18px; color: #fff; background: rgba(255, 255, 255, 0.1); border: 1px solid rgba(255, 255, 255, 0.28); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); box-shadow: 0 18px 36px -14px rgba(0, 0, 0, 0.7), inset 0 1px 0 rgba(255, 255, 255, 0.35); animation: float 6s ease-in-out infinite; }
.orb svg { width: 26px; height: 26px; }
.o1 { left: 7%; top: 6%; } .o2 { right: 7%; top: 6%; animation-delay: -1.5s; } .o3 { left: 7%; bottom: 20%; animation-delay: -3s; } .o4 { right: 7%; bottom: 20%; animation-delay: -4.5s; }
.pipe { position: absolute; z-index: 2; left: 50%; bottom: 18px; transform: translateX(-50%); display: flex; align-items: center; gap: 10px; padding: 9px 14px; border-radius: 999px; background: rgba(255, 255, 255, 0.1); border: 1px solid rgba(255, 255, 255, 0.22); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); }
.pipe span { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 50%; background: var(--grad); color: #fff; box-shadow: 0 8px 18px -6px rgba(26, 120, 230, 0.9); }
.pipe span svg { width: 19px; height: 19px; }
.pipe i { width: 34px; height: 2px; border-radius: 2px; background: linear-gradient(90deg, rgba(92, 200, 255, 0.2), #5cc8ff, rgba(92, 200, 255, 0.2)); background-size: 200% 100%; animation: flow 1.8s linear infinite; }
@keyframes float { 0%, 100% { translate: 0 0; } 50% { translate: 0 -10px; } }
@keyframes flow { to { background-position: -200% 0; } }

/* ===== IT outsourcing ===== */
.it-grid { margin-top: 70px; align-items: start; }
.steps { display: flex; flex-direction: column; gap: 20px; }
.step { display: flex; gap: 24px; align-items: flex-start; padding: 30px 30px 32px; }
.step .num { flex: none; font-family: var(--head); font-size: 56px; font-weight: 700; line-height: 0.9; letter-spacing: -0.04em; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; transition: transform 0.4s; }
.step:hover .num { transform: translateX(4px) scale(1.06); }
.step h3 { font-family: var(--head); font-size: 20px; font-weight: 600; line-height: 1.3; letter-spacing: -0.01em; margin-bottom: 8px; text-wrap: balance; }
.step p { font-size: 16px; line-height: 1.7; }
.term { position: sticky; top: 100px; border-radius: 22px; background: linear-gradient(180deg, #071c4a, #04122e); box-shadow: 0 50px 90px -40px rgba(3, 30, 90, 0.8), inset 0 1px 0 rgba(255, 255, 255, 0.12); overflow: hidden; }
.term-top { display: flex; align-items: center; gap: 7px; padding: 14px 18px; border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
.term-top i { width: 11px; height: 11px; border-radius: 50%; background: #ff5f57; } .term-top i:nth-child(2) { background: #febc2e; } .term-top i:nth-child(3) { background: #28c840; }
.term-top b { margin-left: 14px; width: 140px; height: 8px; border-radius: 6px; background: rgba(255, 255, 255, 0.14); }
.term-body { min-height: 330px; padding: 22px 22px 14px; display: flex; flex-direction: column; gap: 12px; overflow: hidden; }
.tl { display: flex; align-items: center; gap: 8px; height: 10px; opacity: 0; transform: translateX(-12px); animation: tl 0.5s forwards; }
.tl i { height: 8px; border-radius: 5px; }
.tl .a { background: #3b8bff; } .tl .b { background: #5cc8ff; } .tl .c { background: rgba(255, 255, 255, 0.28); } .tl .d { background: #8fe9d0; }
@keyframes tl { to { opacity: 1; transform: none; } }
.term-foot { display: flex; align-items: center; gap: 10px; padding: 12px 18px 16px; border-top: 1px solid rgba(255, 255, 255, 0.08); }
.term-foot b { height: 8px; width: 90px; border-radius: 6px; background: rgba(255, 255, 255, 0.14); }
.dotlive { width: 9px; height: 9px; border-radius: 50%; background: #5ee9b5; box-shadow: 0 0 0 0 rgba(94, 233, 181, 0.7); animation: ping 2s ease-out infinite; }
@keyframes ping { to { box-shadow: 0 0 0 10px rgba(94, 233, 181, 0); } }

/* ===== we provide: bento ===== */
.tiles { margin-top: 64px; display: grid; grid-template-columns: repeat(6, 1fr); gap: 22px; }
.tile { display: flex; flex-direction: column; align-items: flex-start; gap: 22px; padding: 34px 32px 34px; min-height: 240px; overflow: hidden; background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.025)); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); box-shadow: 0 24px 60px -34px rgba(0, 0, 0, 0.8), inset 0 1px 0 rgba(255, 255, 255, 0.1); }
.tile:nth-child(1) { grid-column: span 4; } .tile:nth-child(2) { grid-column: span 2; } .tile:nth-child(3) { grid-column: span 2; } .tile:nth-child(4) { grid-column: span 4; } .tile:nth-child(5) { grid-column: span 3; } .tile:nth-child(6) { grid-column: span 3; }
.tile:hover { transform: translateY(-6px); box-shadow: 0 34px 70px -30px rgba(26, 120, 230, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.14); }
.tn { position: absolute; right: 26px; top: 18px; font-family: var(--head); font-size: 64px; font-weight: 700; line-height: 1; letter-spacing: -0.04em; color: transparent; -webkit-text-stroke: 1px rgba(255, 255, 255, 0.22); transition: -webkit-text-stroke-color 0.4s, transform 0.5s; }
.tile:hover .tn { -webkit-text-stroke-color: rgba(92, 200, 255, 0.8); transform: translateY(4px); }
.tile h3 { margin-top: auto; font-family: var(--head); font-size: 22px; font-weight: 600; line-height: 1.25; letter-spacing: -0.01em; text-wrap: balance; max-width: 22ch; }

/* ===== products ===== */
.prod .sec-title { font-size: clamp(32px, 4vw, 54px); }
.feat { margin-top: 32px; display: flex; flex-direction: column; gap: 16px; }
.feat-item { display: flex; gap: 20px; align-items: flex-start; padding: 24px 26px 26px; }
.feat-item h3, .feat-col h3 { font-family: var(--head); font-size: 18.5px; font-weight: 600; line-height: 1.3; letter-spacing: -0.01em; margin-bottom: 8px; text-wrap: balance; }
.feat-item p, .feat-col p { font-size: 15.5px; line-height: 1.7; }
.feat-item .chip { width: 48px; height: 48px; border-radius: 15px; }
.feat-item .chip svg { width: 22px; height: 22px; }
.dash { position: sticky; top: 100px; border-radius: 26px; background: linear-gradient(180deg, #071c4a, #04122e); box-shadow: 0 60px 100px -50px rgba(3, 40, 110, 0.85), inset 0 1px 0 rgba(255, 255, 255, 0.12); overflow: hidden; padding-bottom: 22px; }
.dash-top { display: flex; align-items: center; gap: 7px; padding: 14px 18px; border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
.dash-top i { width: 11px; height: 11px; border-radius: 50%; background: rgba(255, 255, 255, 0.22); }
.dash-top b { margin-left: 14px; width: 150px; height: 8px; border-radius: 6px; background: rgba(255, 255, 255, 0.14); }
.dash-kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; padding: 18px; }
.dash-kpis div { display: flex; flex-direction: column; gap: 10px; padding: 14px; border-radius: 16px; background: rgba(255, 255, 255, 0.06); border: 1px solid rgba(255, 255, 255, 0.08); }
.dash-kpis b { height: 8px; width: 55%; border-radius: 6px; background: rgba(255, 255, 255, 0.22); }
.dash-kpis em { height: 16px; width: 40%; border-radius: 6px; background: var(--grad); animation: pulse 2.6s ease-in-out infinite; }
.dash-kpis div:nth-child(2) em { animation-delay: 0.5s; } .dash-kpis div:nth-child(3) em { animation-delay: 1s; }
@keyframes pulse { 0%, 100% { opacity: 0.55; } 50% { opacity: 1; } }
.dash canvas { display: block; width: calc(100% - 36px); height: 190px; margin: 0 18px; border-radius: 16px; background: rgba(255, 255, 255, 0.04); border: 1px solid rgba(255, 255, 255, 0.08); }
.dash-bars { display: flex; align-items: flex-end; gap: 6px; height: 74px; margin: 16px 18px 0; }
.dash-bars i { flex: 1; border-radius: 5px 5px 0 0; background: linear-gradient(180deg, #5cc8ff, #2f6bff); transform-origin: bottom; animation: bar 3.8s ease-in-out infinite; animation-delay: calc(var(--i) * 0.1s); }
@keyframes bar { 0%, 100% { transform: scaleY(0.45); } 50% { transform: scaleY(1); } }

.bld { position: relative; aspect-ratio: 1 / 0.92; border-radius: 32px; background: radial-gradient(closest-side at 50% 55%, rgba(26, 140, 240, 0.2), transparent 80%), rgba(4, 16, 46, 0.7); box-shadow: 0 50px 100px -50px rgba(26, 120, 230, 0.7), inset 0 1px 0 rgba(255, 255, 255, 0.1); }
.bld::before { content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1.5px; pointer-events: none; z-index: 3; background: conic-gradient(from var(--ang), rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0.08) 55%, #5cc8ff 75%, #2f6bff 88%, rgba(255, 255, 255, 0.08) 100%); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask: linear-gradient(#000 0 0) content-box exclude, linear-gradient(#000 0 0); mask-composite: exclude; animation: spin 9s linear infinite reverse; }
.bld canvas { position: absolute; inset: 0; width: 100%; height: 100%; border-radius: inherit; }
.incl { margin-top: 32px; padding: 28px 30px 26px; }
.incl h3 { font-family: var(--head); font-size: 20px; font-weight: 600; margin-bottom: 16px; color: #fff; }
.incl ul { margin: 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 13px; }
.incl li { display: flex; align-items: center; gap: 12px; font-size: 16.5px; color: #dbe8fb; }
.incl li svg { flex: none; width: 24px; height: 24px; padding: 4px; border-radius: 50%; color: #fff; background: var(--grad); stroke-width: 2.8; }
.trio { margin-top: 76px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feat-col { padding: 34px 30px 36px; display: flex; flex-direction: column; align-items: flex-start; gap: 18px; }
.feat-col h3 { margin-bottom: 0; color: #fff; }
.feat-col p { color: var(--d-muted); }

/* ===== why ===== */
.why-grid { margin-top: 64px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.why-card { padding: 36px 28px 38px; display: flex; flex-direction: column; align-items: flex-start; gap: 20px; }
.why-card h3 { font-family: var(--head); font-size: 21px; font-weight: 600; letter-spacing: -0.01em; }
.why-card p { font-size: 15.5px; line-height: 1.7; text-wrap: pretty; }

/* ===== stats ===== */
.stats { position: relative; padding: 100px 0; background: linear-gradient(120deg, #00306e 0%, #0a64be 50%, #1aa7ec 100%); overflow: hidden; isolation: isolate; }
.stats::before { content: ""; position: absolute; inset: -20%; z-index: -1; background: radial-gradient(500px 360px at 20% 30%, rgba(255, 255, 255, 0.18), transparent 70%), radial-gradient(520px 380px at 80% 70%, rgba(47, 107, 255, 0.5), transparent 70%); animation: drift 14s ease-in-out infinite alternate; }
.bgfx { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -1; pointer-events: none; }
#map { opacity: 0.55; }
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.gauge { position: relative; width: min(100%, 190px); aspect-ratio: 1; margin: 0 auto; display: grid; place-items: center; }
.gauge svg { position: absolute; inset: 0; width: 100%; height: 100%; transform: rotate(-90deg); overflow: visible; }
.gauge .rt { stroke: rgba(255, 255, 255, 0.22); stroke-width: 2; }
.gauge .rv { stroke: #fff; stroke-width: 4; stroke-linecap: round; stroke-dasharray: 327; stroke-dashoffset: 327; transition: stroke-dashoffset 2s cubic-bezier(.2, .7, .2, 1); }
.stat.in .gauge .rv { stroke-dashoffset: var(--off, 90); }
.stat:nth-child(1) { --off: 110; } .stat:nth-child(2) { --off: 150; } .stat:nth-child(3) { --off: 60; } .stat:nth-child(4) { --off: 85; }
.stat b { position: relative; font-family: var(--head); font-size: clamp(34px, 4.2vw, 50px); font-weight: 700; letter-spacing: -0.03em; line-height: 1; color: #fff; }
.stat span { display: block; margin-top: 20px; font-size: 16px; font-weight: 500; color: rgba(255, 255, 255, 0.92); }

/* ===== contact ===== */
.info { margin-top: 38px; display: flex; flex-direction: column; gap: 14px; padding: 26px 26px 28px; }
.info b { font-family: var(--head); font-size: 18px; letter-spacing: 0.02em; color: var(--ink); }
.info p { display: flex; gap: 12px; align-items: flex-start; color: var(--muted); font-size: 16px; line-height: 1.6; }
.info p svg { flex: none; width: 22px; height: 22px; margin-top: 2px; color: var(--sky); }
.info a { color: var(--brand); border-bottom: 1px solid #a9cdea; transition: color 0.2s, border-color 0.2s; }
.info a:hover { color: var(--sky); border-color: var(--sky); }
.form { display: flex; flex-direction: column; gap: 14px; padding: 36px 34px 36px; }
.form input, .form textarea { width: 100%; padding: 17px 20px; border-radius: 16px; border: 1px solid #d3e2f2; background: #fff; color: var(--ink); font: inherit; font-size: 16px; outline: none; transition: border-color 0.2s, box-shadow 0.2s; resize: vertical; }
.form input::placeholder, .form textarea::placeholder { color: #8296b5; }
.form input:focus, .form textarea:focus { border-color: var(--sky); box-shadow: 0 0 0 4px rgba(26, 167, 236, 0.18); }
.btn { position: relative; overflow: hidden; display: inline-flex; align-items: center; justify-content: center; gap: 12px; padding: 18px 30px; border: 0; border-radius: 16px; background: var(--grad); color: #fff; font: inherit; font-size: 16px; font-weight: 600; letter-spacing: 0.06em; cursor: pointer; box-shadow: 0 16px 36px -12px rgba(26, 120, 230, 0.85); transition: transform 0.25s, box-shadow 0.25s; }
.btn:hover { transform: translateY(-3px); box-shadow: 0 22px 44px -12px rgba(26, 120, 230, 1); }
.btn::after { content: ""; position: absolute; top: 0; bottom: 0; left: -60%; width: 40%; background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.5), transparent); transform: skewX(-18deg); }
.btn:hover::after { animation: sweep 0.9s ease-out 1; }
@keyframes sweep { from { left: -60%; } to { left: 140%; } }
.btn svg { width: 20px; height: 20px; transition: transform 0.25s; }
.btn:hover svg { transform: translateX(4px) rotate(-6deg); }

.foot { padding: 30px 0 36px; background: #020c26; color: #8fa6c8; font-size: 14px; text-align: center; border-top: 1px solid rgba(255, 255, 255, 0.07); }

/* ===== responsive ===== */
@media (max-width: 1050px) {
  .split, .about-wrap { grid-template-columns: 1fr; gap: 52px; }
  .about-head { text-align: center; } .about-head .eyebrow { justify-content: center; }
  .tiles { grid-template-columns: repeat(2, 1fr); }
  .tile:nth-child(n) { grid-column: span 1; }
  .trio { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .term, .dash { position: relative; top: 0; }
}
@media (max-width: 860px) {
  .links { position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; gap: 0; padding: 8px var(--pad) 18px; border-radius: 0; background: rgba(255, 255, 255, 0.98); border-bottom: 1px solid #d3e2f2; box-shadow: 0 24px 40px -20px rgba(3, 30, 80, 0.5); opacity: 0; visibility: hidden; transform: translateY(-8px); transition: opacity 0.25s, transform 0.25s, visibility 0.25s; }
  .links.open { opacity: 1; visibility: visible; transform: none; }
  .links a { padding: 16px 4px; font-size: 17px; border-radius: 0; border-bottom: 1px solid #e3edf8; }
  .links a.on { background: none; color: var(--sky); box-shadow: none; }
  .burger { display: inline-flex; }
}
@media (max-width: 700px) {
  .sec { padding: 84px 0; }
  .hero { padding: 108px var(--pad) 360px; align-items: flex-start; text-align: center; }
  .hero-copy { margin: 0 auto; }
  .hero::after { background: linear-gradient(180deg, rgba(2, 12, 38, 0.7) 0%, rgba(2, 12, 38, 0.2) 55%, transparent 70%), linear-gradient(0deg, #031030 0%, transparent 14%); }
  .tiles, .trio, .why-grid { grid-template-columns: 1fr; }
  .tile { min-height: 200px; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); row-gap: 44px; }
  .step { padding: 24px 22px 26px; gap: 16px; } .step .num { font-size: 44px; }
  .vm-card { padding: 28px 24px 32px; }
  .form { padding: 26px 20px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal, .hero-kicker, .hero-sub, .hero h1 span, .hero-globe { opacity: 1 !important; transform: none !important; filter: none !important; }
  .stat .gauge .rv { stroke-dashoffset: var(--off, 90); }
}
.nav { background: rgba(255, 255, 255, 0.95); }

/* video nền hero (đã cắt bỏ phần logo M, nén lại cho nhẹ) */
.hero-video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: left center; z-index: -3; opacity: 0; transition: opacity 1.4s ease; }
.ready .hero-video { opacity: 0.95; }
.hero::after { background: linear-gradient(90deg, rgba(2, 12, 38, 0.55) 0%, rgba(2, 12, 38, 0.2) 40%, transparent 62%), linear-gradient(0deg, #031030 0%, transparent 14%); }
@media (max-width: 700px) { .hero::after { background: linear-gradient(180deg, rgba(2, 12, 38, 0.6) 0%, rgba(2, 12, 38, 0.15) 55%, transparent 70%), linear-gradient(0deg, #031030 0%, transparent 14%); } }
@media (prefers-reduced-motion: reduce) { .hero-video { display: none; } }

/* video đầy đủ, căn phải để địa cầu phủ đúng chỗ logo; sáng hơn để thấy rõ */
.hero-video { object-position: 88% center; filter: brightness(1.25) saturate(1.2); }
.ready .hero-video { opacity: 1; }
.hero::after { background: linear-gradient(90deg, rgba(2, 12, 38, 0.6) 0%, rgba(2, 12, 38, 0.18) 38%, transparent 60%), linear-gradient(0deg, #031030 0%, transparent 12%); }
@media (max-width: 700px) { .hero::after { background: linear-gradient(180deg, rgba(2, 12, 38, 0.78) 0%, rgba(2, 12, 38, 0.5) 45%, rgba(2, 12, 38, 0.1) 72%, transparent 100%), linear-gradient(0deg, #031030 0%, transparent 12%); } }

/* ===== trở lại kiểu chữ code: Chakra Petch + JetBrains Mono, tiền tố // và >, ngoặc [ ] ===== */
:root { --head: "Chakra Petch", system-ui, sans-serif; --body: "IBM Plex Sans", system-ui, sans-serif; --mono: "JetBrains Mono", ui-monospace, monospace; }
.tcaret { display: inline-block; width: 0.5em; height: 0.95em; margin-left: 3px; vertical-align: -0.12em; background: var(--sky2); animation: caret 1s steps(2) infinite; }
@keyframes caret { 50% { opacity: 0; } }
.hero h1 span { filter: none; transform: none; transition: none; }
.hero h1 { font-weight: 700; letter-spacing: -0.01em; text-transform: uppercase; line-height: 1; }
.hero-kicker { font-family: var(--mono); font-weight: 500; letter-spacing: 0.3em; border-radius: 6px; background: rgba(255, 255, 255, 0.06); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); padding: 9px 16px; }
.hero-kicker::before { content: ">"; width: auto; height: auto; border-radius: 0; background: none; box-shadow: none; animation: none; color: var(--sky2); font-weight: 600; }
.hero-kicker .tcaret { height: 1em; }
.sec-title, .step h3, .vm-card h3, .why-card h3, .tile h3, .feat-item h3, .feat-col h3, .incl h3, .info b { letter-spacing: 0; }
.sec-title { font-weight: 700; letter-spacing: -0.005em; }
.eyebrow { font-family: var(--mono); font-weight: 500; font-size: 13px; letter-spacing: 0.24em; }
.eyebrow::before { content: "//"; width: auto; height: auto; background: none; border-radius: 0; color: #7d93b8; letter-spacing: 0; }
.center .eyebrow::after { display: none; }
.light .eyebrow::before { color: #98aac6; }
.links { background: none; padding: 0; gap: 4px; }
.links a { font-family: var(--mono); font-size: 13px; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; padding: 10px 18px; border-radius: 0; color: #3a557f; }
.links a::before, .links a::after { position: absolute; top: 50%; color: #0b86cc; opacity: 0; transition: opacity 0.2s, transform 0.2s; }
.links a::before { content: "["; left: 2px; transform: translate(6px, -50%); }
.links a::after { content: "]"; right: 2px; transform: translate(-6px, -50%); }
.links a:hover, .links a.on { color: var(--brand); background: none; box-shadow: none; }
.links a:hover::before, .links a.on::before, .links a:hover::after, .links a.on::after { opacity: 1; transform: translate(0, -50%); }
.step .num, .tn, .stat b { font-family: var(--mono); }
.stat span { font-family: var(--mono); font-size: 14px; letter-spacing: 0.08em; text-transform: uppercase; }
.btn { font-family: var(--mono); font-weight: 600; letter-spacing: 0.14em; border-radius: 10px; }
.form input, .form textarea { font-family: var(--mono); font-size: 15px; border-radius: 10px; }
.vm-card h3, .why-card h3, .incl h3 { text-transform: uppercase; letter-spacing: 0.04em; }
.tile h3 { text-transform: uppercase; letter-spacing: 0.03em; font-size: 20px; }
.foot { font-family: var(--mono); letter-spacing: 0.06em; font-size: 13px; }

/* video đầy đủ làm nền hero (giữ logo M trong video) */
.hero-video { object-position: 88% center; filter: brightness(1.2) saturate(1.15); }
@media (max-width: 860px) { .links a::before, .links a::after { display: none; } .links a { font-size: 15px; } }

/* ===== We provide: mỗi ô có minh hoạ động riêng ===== */
.tile { min-height: 300px; }
.tile .viz { align-self: stretch; position: relative; height: 108px; margin-top: auto; opacity: 0.92; transition: opacity 0.3s, transform 0.4s; }
.tile:hover .viz { opacity: 1; transform: translateY(-2px); }
.tile h3 { margin-top: 0; }

/* 01 điện thoại + dòng mã */
.v1 { display: flex; align-items: center; gap: 22px; }
.v1 .ph { position: relative; flex: none; width: 58px; height: 104px; padding: 16px 8px 8px; border-radius: 15px; border: 2px solid rgba(255, 255, 255, 0.38); background: rgba(255, 255, 255, 0.05); display: flex; flex-direction: column; gap: 7px; overflow: hidden; }
.v1 .ph b { position: absolute; top: 5px; left: 50%; width: 18px; height: 3px; margin-left: -9px; border-radius: 3px; background: rgba(255, 255, 255, 0.4); }
.v1 .ph i { display: block; height: 9px; width: var(--w); border-radius: 5px; background: linear-gradient(90deg, #5cc8ff, #2f6bff); animation: pbar 2.6s ease-in-out infinite; }
.v1 .ph i:nth-of-type(2) { animation-delay: 0.3s; } .v1 .ph i:nth-of-type(3) { animation-delay: 0.6s; }
.v1 .ph em { margin-top: auto; height: 22px; border-radius: 8px; background: rgba(92, 200, 255, 0.28); animation: pulse 2.2s ease-in-out infinite; }
@keyframes pbar { 0%, 100% { transform: scaleX(0.55); } 50% { transform: scaleX(1); } }
.v1 .cl { flex: 1; display: flex; flex-direction: column; gap: 10px; }
.v1 .cl i { display: block; height: 8px; width: var(--w); border-radius: 5px; background: rgba(255, 255, 255, 0.24); transform-origin: left; animation: cw 4.2s ease-in-out infinite; animation-delay: calc(var(--i) * 0.3s); }
.v1 .cl i.b { background: #5cc8ff; }
@keyframes cw { 0% { transform: scaleX(0); } 28%, 78% { transform: scaleX(1); } 100% { transform: scaleX(0); } }

/* 02 giá máy chủ với đèn LED */
.v2 { display: flex; flex-direction: column; justify-content: center; gap: 9px; }
.v2 .rk { display: flex; align-items: center; gap: 8px; height: 28px; padding: 0 12px; border-radius: 9px; border: 1px solid rgba(255, 255, 255, 0.2); background: rgba(255, 255, 255, 0.05); }
.v2 .rk i { width: 7px; height: 7px; border-radius: 50%; background: #5ee9b5; box-shadow: 0 0 8px #5ee9b5; animation: led 1.8s steps(2) infinite; }
.v2 .rk i:nth-child(2) { background: #5cc8ff; box-shadow: 0 0 8px #5cc8ff; animation-delay: 0.5s; } .v2 .rk i:nth-child(3) { background: #8ea7ff; box-shadow: 0 0 8px #8ea7ff; animation-delay: 1.1s; }
.v2 .rk:nth-child(2) i { animation-delay: 0.7s; } .v2 .rk:nth-child(3) i { animation-delay: 1.3s; }
.v2 .rk s { flex: 1; height: 3px; margin-left: 6px; border-radius: 3px; background: repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.22) 0 10px, transparent 10px 15px); }
.v2 .rk u { width: 26px; height: 8px; border-radius: 4px; background: linear-gradient(90deg, #5cc8ff, #2f6bff); animation: pbar 2.4s ease-in-out infinite; transform-origin: right; }
@keyframes led { 50% { opacity: 0.25; } }

/* 03 hệ thống tích hợp: các nút nối vào trung tâm */
.v3 svg { width: 100%; height: 100%; overflow: visible; }
.v3 .ln { fill: none; stroke: rgba(130, 205, 255, 0.55); stroke-width: 1.4; stroke-dasharray: 4 5; animation: dashmove 1.2s linear infinite; }
.v3 .nd { fill: #04164a; stroke: #5cc8ff; stroke-width: 1.8; }
.v3 .pulse { fill: none; stroke: #5cc8ff; stroke-width: 1.5; transform-origin: 150px 50px; animation: hubping 2.4s ease-out infinite; }
@keyframes dashmove { to { stroke-dashoffset: -18; } }
@keyframes hubping { from { transform: scale(1); opacity: 0.9; } to { transform: scale(2.1); opacity: 0; } }

/* 04 bảng nhập liệu: các ô sáng lần lượt */
.v4 { display: grid; grid-template-columns: repeat(6, 1fr); grid-template-rows: repeat(3, 1fr); gap: 7px; }
.v4 i { border-radius: 7px; background: rgba(255, 255, 255, 0.07); border: 1px solid rgba(255, 255, 255, 0.1); animation: cell 5.4s ease-in-out infinite; animation-delay: calc(var(--i) * 0.18s); }
@keyframes cell { 0%, 6% { background: rgba(255, 255, 255, 0.07); box-shadow: none; } 12%, 62% { background: rgba(92, 200, 255, 0.5); box-shadow: 0 0 12px rgba(92, 200, 255, 0.5); } 72%, 100% { background: rgba(255, 255, 255, 0.07); box-shadow: none; } }

/* 05 bánh răng + thanh tiến độ */
.v5 { display: flex; align-items: center; gap: 22px; }
.v5 svg { flex: none; width: 150px; height: 100%; }
.v5 svg circle, .v5 svg rect { fill: none; stroke: rgba(160, 215, 255, 0.85); stroke-width: 2; }
.v5 .g1 { animation: rot 9s linear infinite; } .v5 .g2 { animation: rot 6s linear infinite reverse; }
@keyframes rot { to { transform: rotate(360deg); } }
.v5 .pb { flex: 1; height: 10px; border-radius: 6px; background: rgba(255, 255, 255, 0.12); overflow: hidden; }
.v5 .pb i { display: block; height: 100%; width: 100%; border-radius: 6px; background: linear-gradient(90deg, #5cc8ff, #2f6bff); transform-origin: left; animation: fillbar 4.5s ease-in-out infinite; }
@keyframes fillbar { 0% { transform: scaleX(0.05); } 70%, 85% { transform: scaleX(1); } 100% { transform: scaleX(0.05); } }

/* 06 danh sách kiểm thử: các ô được tick lần lượt */
.v6 { display: flex; flex-direction: column; justify-content: center; gap: 13px; }
.v6 .t { display: flex; align-items: center; gap: 14px; }
.v6 .t u { position: relative; flex: none; width: 20px; height: 20px; border-radius: 6px; border: 2px solid rgba(255, 255, 255, 0.32); animation: tbox 6s ease-in-out infinite; animation-delay: calc(var(--i) * 1.3s); }
.v6 .t u::after { content: ""; position: absolute; left: 5px; top: 1px; width: 5px; height: 10px; border: solid #5ee9b5; border-width: 0 2.5px 2.5px 0; transform: rotate(45deg); opacity: 0; animation: tick 6s ease-in-out infinite; animation-delay: calc(var(--i) * 1.3s); }
.v6 .t s { height: 8px; width: var(--w); border-radius: 5px; background: rgba(255, 255, 255, 0.24); }
@keyframes tbox { 0%, 12% { border-color: rgba(255, 255, 255, 0.32); background: transparent; } 22%, 85% { border-color: #5ee9b5; background: rgba(94, 233, 181, 0.22); } 100% { border-color: rgba(255, 255, 255, 0.32); background: transparent; } }
@keyframes tick { 0%, 14% { opacity: 0; } 24%, 85% { opacity: 1; } 100% { opacity: 0; } }
@media (max-width: 700px) { .tile { min-height: 280px; } .v5 svg { width: 120px; } }
@media (prefers-reduced-motion: reduce) { .tile .viz * { animation: none !important; } }
.v5 svg { width: 190px; height: 118px; margin-top: -6px; } @media (max-width: 700px) { .v5 svg { width: 150px; height: 96px; } }

/* thẻ cùng hàng thẳng dòng: biểu tượng, tiêu đề, đoạn văn cùng nằm trên một đường kẻ ngang */
.why-grid, .trio { grid-auto-rows: auto; align-items: stretch; }
.why-card, .feat-col { display: grid; grid-row: span 3; grid-template-rows: subgrid; row-gap: 20px; align-items: start; justify-items: start; text-align: left; }
.why-card h3, .feat-col h3 { align-self: start; margin: 0; }
.why-card p, .feat-col p { align-self: start; margin: 0; }
@supports not (grid-template-rows: subgrid) { .why-card, .feat-col { display: flex; flex-direction: column; gap: 20px; } .why-card h3 { min-height: 2.6em; } }
@media (max-width: 700px) { .why-card, .feat-col { grid-row: auto; grid-template-rows: none; display: flex; flex-direction: column; gap: 18px; } }

/* tiêu đề Why choose us nằm gọn một dòng */
.why-card h3 { font-size: 18px; letter-spacing: 0.02em; white-space: nowrap; }
/* nền mạch điện cho các phần xanh đậm, thay lưới ô vuông */
.ai::before, .provide::before, .bms::before { display: none; }
.bgfx.circuit { display: block; }
.bgfx.circuit { opacity: 0.5; }

/* các phần xanh đậm tối hơn, gần màu hero và chân trang */
.ai, .provide, .bms { background: radial-gradient(900px 520px at 85% 0%, rgba(26, 120, 230, 0.14), transparent 70%), radial-gradient(700px 480px at 0% 100%, rgba(47, 107, 255, 0.08), transparent 70%), linear-gradient(180deg, #031030 0%, #020c26 100%); }
.bgfx.circuit { opacity: 0.42; }

/* ô ẩn chống bot + dòng báo kết quả của biểu mẫu */
.form .hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; pointer-events: none; }
.form-note { min-height: 1.4em; margin-top: 2px; font-size: 14.5px; font-weight: 500; }
.form-note.ok { color: #0a8a5b; } .form-note.err { color: #c0392b; }
.btn:disabled { opacity: 0.7; cursor: progress; transform: none; }