/* DIGO — AIoT × Digital Twin. Tokens & rationale: design-system/MASTER.md
   Brand (từ Figma): vàng #FDC747 · nền đen #06060A · xám than #363535 */
:root {
  --bg: #06060A;
  --bg-2: #0E0F15;
  --bg-3: #15161D;
  --surface: rgba(255, 255, 255, .045);
  --surface-2: rgba(255, 255, 255, .08);
  --border: rgba(255, 255, 255, .12);
  --border-strong: rgba(253, 199, 71, .5);
  --text: #F2F1EC;
  --muted: #A9A79F;
  --gold: #FDC747;
  --gold-2: #F5A524;
  --gold-text: #FDC747;         /* màu chữ vàng trên nền tối */
  --on-gold: #1A1303;           /* chữ trên nút vàng */
  --green: #34D399;
  --orange: #FB923C;
  --red: #F87171;
  --grad: linear-gradient(120deg, #FFE08A 0%, #FDC747 45%, #F5A524 100%);
  --font-head: 'Roboto', 'Open Sans', system-ui, sans-serif;
  --font-body: 'Open Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;
  --r-sm: 12px; --r-md: 20px;
  --pad: clamp(64px, 9vw, 112px);
  color-scheme: dark;
}
/* Section sáng (giống khối nền trắng trong Figma) */
.section--light {
  --bg: #fff; --bg-2: #F5F6F8; --text: #0A0808; --muted: #4A4F5B;
  --surface: #F5F6F8; --surface-2: #ECEEF2; --border: rgba(10, 8, 8, .12);
  --gold-text: #8A5A00; --border-strong: rgba(138, 90, 0, .55);
  background: #fff; color: var(--text);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body { margin: 0; background: var(--bg); color: var(--text); font: 400 16px/1.7 var(--font-body); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { font-family: var(--font-head); line-height: 1.2; margin: 0; letter-spacing: -.01em; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; border-radius: 6px; }

.container { width: min(1200px, 100% - 40px); margin-inline: auto; }
@media (min-width: 768px) { .container { width: min(1200px, 100% - 64px); } }
.muted { color: var(--muted); }
.mono { font-family: var(--font-mono); }
.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.ico { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; flex: none; }
.ico--xl { width: 72px; height: 72px; stroke-width: 1.2; }
.sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.sr-only::after { display: none; }
.skip { position: absolute; left: 12px; top: -60px; background: var(--gold); color: var(--on-gold); padding: 10px 16px; border-radius: 8px; z-index: 100; font-weight: 600; }
.skip:focus { top: 12px; }

/* ---------- Buttons ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 48px; padding: 0 26px; border-radius: 999px; font-weight: 600; font-size: 15px; border: 1px solid transparent; cursor: pointer; transition: transform .2s, box-shadow .2s, background .2s, border-color .2s; }
.btn--sm { min-height: 40px; padding: 0 18px; font-size: 14px; }
.btn--primary { background: var(--grad); color: var(--on-gold); box-shadow: 0 8px 30px -8px rgba(253, 199, 71, .55); }
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 12px 36px -8px rgba(253, 199, 71, .8); }
.btn--ghost { border-color: var(--border); background: var(--surface); color: var(--text); }
.btn--ghost:hover { border-color: var(--border-strong); background: var(--surface-2); }

/* ---------- Nav ---------- */
.nav { position: fixed; inset: 0 0 auto 0; z-index: 50; background: rgba(6, 6, 10, .55); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-bottom: 1px solid transparent; transition: background .3s, border-color .3s; }
.nav.is-scrolled { background: rgba(6, 6, 10, .92); border-color: var(--border); }
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: inline-flex; align-items: center; min-height: 44px; }
.brand img { width: 72px; height: auto; }
.nav__links { display: flex; align-items: center; gap: 2px; }
.nav__links a:not(.btn) { position: relative; padding: 10px 12px; border-radius: 999px; color: var(--gold); font-size: 14px; font-weight: 600; letter-spacing: .04em; text-transform: uppercase; transition: color .2s, background .2s; }
.nav__links a:not(.btn):hover { background: rgba(253, 199, 71, .1); }
.nav__links a[aria-current="page"] { color: #fff; }
.nav__links a[aria-current="page"]::after { content: ''; position: absolute; left: 12px; right: 12px; bottom: 4px; height: 2px; background: var(--grad); border-radius: 2px; }
.nav__cta { margin-left: 12px; }
.nav__toggle { display: none; width: 44px; height: 44px; border-radius: 12px; border: 1px solid var(--border); background: var(--surface); color: var(--gold); align-items: center; justify-content: center; }
@media (max-width: 1180px) {
  .nav__toggle { display: inline-flex; }
  .nav__links { position: fixed; inset: 68px 0 auto 0; flex-direction: column; align-items: stretch; gap: 0; padding: 12px 20px 24px; background: rgba(6, 6, 10, .98); border-bottom: 1px solid var(--border); transform: translateY(-12px); opacity: 0; visibility: hidden; transition: .25s; }
  .nav__links.is-open { transform: none; opacity: 1; visibility: visible; }
  .nav__links a:not(.btn) { padding: 14px 8px; font-size: 16px; border-radius: 10px; }
  .nav__links a[aria-current="page"]::after { left: 8px; right: auto; width: 28px; bottom: 6px; }
  .nav__cta { margin: 12px 0 0; }
}

/* ---------- Sections ---------- */
.section { padding-block: var(--pad); position: relative; background: var(--bg); color: var(--text); }
.section--alt { background: linear-gradient(180deg, var(--bg-2), var(--bg)); border-block: 1px solid var(--border); }
.section--slate { background: #363535; --bg: #363535; --muted: #D7D4CB; --surface: rgba(255, 255, 255, .06); }
.section__head { max-width: 760px; margin-bottom: clamp(36px, 5vw, 60px); }
.section__head--center { margin-inline: auto; text-align: center; }
.section__head--center .lead { margin-inline: auto; }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; font: 500 13px/1 var(--font-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--gold-text); margin-bottom: 18px; }
.eyebrow .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); animation: ping 2s infinite; }
h2 { font-size: clamp(28px, 4vw, 44px); font-weight: 300; text-transform: uppercase; letter-spacing: .01em; margin-bottom: 18px; }
h2 b { font-weight: 700; }
h2::after { content: ''; display: block; width: 96px; height: 4px; border-radius: 4px; background: var(--grad); margin-top: 18px; }
.section__head--center h2::after { margin-inline: auto; }
.lead { font-size: clamp(16px, 1.5vw, 18px); color: var(--muted); max-width: 66ch; }

/* ---------- Hero (trang chủ) ---------- */
.hero { position: relative; padding: 128px 0 56px; overflow: hidden; background: radial-gradient(ellipse 60% 50% at 78% 25%, rgba(253, 199, 71, .13), transparent 70%), var(--bg); }
.hero__grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px); background-size: 56px 56px; -webkit-mask-image: radial-gradient(ellipse 80% 70% at 60% 30%, #000 30%, transparent 75%); mask-image: radial-gradient(ellipse 80% 70% at 60% 30%, #000 30%, transparent 75%); }
.hero__inner { position: relative; display: grid; grid-template-columns: 1.05fr 1fr; gap: 24px; align-items: center; }
.hero h1 { font-size: clamp(36px, 5.2vw, 62px); font-weight: 700; margin-bottom: 22px; letter-spacing: -.02em; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 14px; margin: 32px 0 28px; }
.protocols { display: flex; flex-wrap: wrap; gap: 8px; }
.protocols li { font: 400 12px/1 var(--font-mono); padding: 8px 12px; border: 1px solid var(--border); border-radius: 999px; color: var(--muted); background: var(--surface); }
.hero__visual { position: relative; }
.hero__visual svg { width: 100%; height: auto; overflow: visible; }
@media (max-width: 980px) {
  .hero { padding-top: 104px; }
  .hero__inner { grid-template-columns: 1fr; }
  .hero__visual { max-width: 560px; margin-inline: auto; width: 100%; }
}
.flow { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 40px; border: 1px solid var(--border); border-radius: var(--r-md); background: var(--surface); overflow: hidden; position: relative; }
.flow li { display: flex; flex-direction: column; gap: 2px; padding: 20px 22px; position: relative; font-size: 14px; color: var(--muted); }
.flow li + li { border-left: 1px solid var(--border); }
.flow li + li::before { content: ''; position: absolute; left: -5px; top: 50%; width: 9px; height: 9px; border-radius: 50%; background: var(--gold); transform: translateY(-50%); box-shadow: 0 0 12px var(--gold); }
.flow b { font: 600 18px/1.3 var(--font-head); color: var(--text); }
.flow__n { font: 500 12px/1 var(--font-mono); color: var(--gold); margin-bottom: 6px; }
@media (max-width: 720px) {
  .flow { grid-template-columns: 1fr 1fr; }
  .flow li:nth-child(3) { border-left: 0; }
  .flow li:nth-child(n+3) { border-top: 1px solid var(--border); }
  .flow li:nth-child(3)::before { display: none; }
}

/* isometric scene */
.iso-floor line { stroke: rgba(255,255,255,.12); stroke-width: 1; }
.iso-edge { fill: rgba(253,199,71,.04); stroke: rgba(253,199,71,.4); stroke-width: 1.2; }
.iso-shadow polygon { fill: rgba(0,0,0,.55); filter: blur(3px); }
.iso-face { fill: #FDC747; stroke: rgba(253,199,71,.75); stroke-width: 1; stroke-linejoin: round; transition: fill .2s; }
.iso-box { cursor: pointer; }
.iso-box.is-hover .iso-face { fill: #FFE08A; stroke: #fff; }
.iso-box.is-sel .iso-face { stroke: #fff; stroke-width: 1.8; }
.iso-stem { stroke: rgba(253,199,71,.7); stroke-dasharray: 2 3; }
.iso-core { fill: var(--gold); pointer-events: none; }
.iso-ring { fill: none; stroke: var(--gold); stroke-width: 1.5; transform-box: fill-box; transform-origin: center; animation: ring 2.4s ease-out infinite; pointer-events: none; }
.iso-leader { stroke: rgba(253,199,71,.45); stroke-width: 1; pointer-events: none; }
.iso-tag { pointer-events: none; }
.iso-tag rect { fill: rgba(6,6,10,.9); stroke: rgba(253,199,71,.45); transition: stroke .2s; }
.iso-tag.is-hover rect { stroke: #fff; stroke-width: 1.5; fill: rgba(38,28,4,.96); }
.iso-tag text { font-family: var(--font-mono); font-size: 11px; fill: var(--muted); }
.iso-tag text.v { fill: var(--text); font-weight: 500; }
.iso-tag circle { fill: var(--green); }
.iso-tag.warn circle { fill: var(--orange); }
.iso-path { fill: none; stroke: rgba(253,199,71,.4); stroke-width: 1.2; stroke-dasharray: 3 5; pointer-events: none; }
.iso-packet { fill: #fff; filter: drop-shadow(0 0 4px var(--gold)); pointer-events: none; }
.iso-hub polygon { fill: rgba(253,199,71,.3); stroke: var(--gold); stroke-width: 1.4; }
.iso-hub text { fill: var(--gold); font: 11px var(--font-mono); }
/* khung tương tác của cảnh 3D */
.hero__visual { cursor: grab; touch-action: pan-y; user-select: none; -webkit-user-select: none; outline: none; border-radius: var(--r-md); }
.hero__visual.is-drag { cursor: grabbing; }
.hero__visual:focus-visible { outline: 2px solid var(--gold); outline-offset: 4px; }
.twin__ctl { position: absolute; right: 4px; bottom: 4px; display: flex; gap: 6px; }
.twin__ctl button { width: 40px; height: 40px; display: grid; place-items: center; border-radius: 50%; border: 1px solid var(--border); background: rgba(6,6,10,.8); color: var(--gold); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); transition: border-color .2s, background .2s, transform .2s; }
.twin__ctl button:hover { border-color: var(--gold); background: rgba(253,199,71,.12); transform: translateY(-2px); }
.twin__ctl .ico { width: 18px; height: 18px; }
.twin__info { position: absolute; left: 4px; bottom: 4px; display: flex; flex-wrap: wrap; align-items: center; gap: 4px 12px; max-width: calc(100% - 290px); min-height: 40px; padding: 8px 14px; border-radius: 14px; border: 1px solid var(--border); background: rgba(6,6,10,.8); font-size: 12.5px; pointer-events: none; }
.twin__info b { font-weight: 600; }
.twin__info .mono { color: var(--gold); }
.twin__info .hint { color: var(--muted); }
.twin__info .status { padding: 3px 8px; font-size: 11px; font-style: normal; }
@media (max-width: 640px) { .hero__visual { padding-bottom: 104px; } .twin__info { max-width: calc(100% - 4px); bottom: 52px; } .twin__ctl { left: 4px; right: 4px; justify-content: center; } }

/* ---------- Page hero (trang con) ---------- */
.page-hero { position: relative; padding: 140px 0 72px; overflow: hidden; background: radial-gradient(ellipse 70% 80% at 85% 0%, rgba(253,199,71,.14), transparent 65%), linear-gradient(180deg, #06060A, #0A1020 120%); border-bottom: 1px solid var(--border); }
.page-hero::before { content: ''; position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px); background-size: 56px 56px; -webkit-mask-image: linear-gradient(90deg, transparent, #000 70%); mask-image: linear-gradient(90deg, transparent, #000 70%); }
.page-hero .container { position: relative; }
.page-hero h1 { font-size: clamp(32px, 4.6vw, 54px); font-weight: 300; text-transform: uppercase; max-width: 22ch; margin-bottom: 20px; }
.page-hero h1 b { font-weight: 700; color: var(--gold); }
.page-hero .lead { max-width: 64ch; }

/* ---------- Cards ---------- */
.card { position: relative; padding: 28px; border: 1px solid var(--border); border-radius: var(--r-md); background: var(--surface); overflow: hidden; transition: border-color .25s, transform .25s, box-shadow .25s; }
.card:hover { border-color: var(--border-strong); transform: translateY(-3px); }
.card h3 { font-size: 20px; font-weight: 500; margin: 18px 0 10px; }
.card p { color: var(--muted); font-size: 15px; }
.card__ico { display: inline-flex; width: 52px; height: 52px; align-items: center; justify-content: center; border-radius: 14px; background: #06060A; border: 1px solid rgba(253,199,71,.45); color: var(--gold); }
.card__ico .ico { width: 26px; height: 26px; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.tags li { font: 400 12px/1 var(--font-mono); padding: 7px 11px; border-radius: 999px; background: rgba(253,199,71,.1); color: var(--gold-text); border: 1px solid rgba(253,199,71,.3); }
.spot::after { content: ''; position: absolute; inset: 0; border-radius: inherit; pointer-events: none; opacity: 0; transition: opacity .3s; background: radial-gradient(360px circle at var(--mx, 50%) var(--my, 50%), rgba(253,199,71,.12), transparent 60%); }
.spot:hover::after { opacity: 1; }

.grid { display: grid; gap: 20px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1000px) { .grid--4 { grid-template-columns: 1fr 1fr; } .grid--3 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; } }

.bento { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card--xl { grid-column: span 2; grid-row: span 2; display: flex; flex-direction: column; padding: 36px; background: linear-gradient(160deg, rgba(253,199,71,.1), rgba(245,165,36,.03) 55%, var(--surface)); }
.card--xl h3 { font-size: 28px; }
.card--xl p { max-width: 46ch; font-size: 16px; }
.card__deco { position: absolute; right: -10px; bottom: -6px; width: min(62%, 340px); color: rgba(253,199,71,.4); pointer-events: none; }
@media (max-width: 900px) { .bento { grid-template-columns: 1fr 1fr; } .card--xl { grid-column: span 2; grid-row: auto; min-height: 320px; } }
@media (max-width: 600px) { .bento { grid-template-columns: 1fr; } .card--xl { grid-column: auto; padding: 28px; } }

/* trụ cột (khối sáng) */
.pillar { text-align: left; }
.pillar .card__ico { margin-bottom: 4px; }
.pillar h3 { font-size: 17px; font-weight: 700; text-transform: uppercase; letter-spacing: .02em; }
.pillar .more { display: inline-flex; align-items: center; gap: 6px; margin-top: 16px; font-weight: 600; font-size: 14px; color: var(--gold-text); }
.pillar .more:hover { gap: 10px; }
.section--light .card:hover { box-shadow: 0 18px 40px -22px rgba(10,8,8,.35); }

/* ---------- Band ảnh ---------- */
.band { position: relative; min-height: 420px; display: flex; align-items: flex-end; overflow: hidden; background: #06060A; }
.band__img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.band::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(6,6,10,.1) 0%, rgba(6,6,10,.55) 55%, #06060A 100%); }
.band .container { position: relative; z-index: 1; padding-block: 56px; }

/* ---------- Mục tiêu / text blocks ---------- */
.prose p + p { margin-top: 16px; }
.prose p { color: var(--muted); }
.statement { font: 300 clamp(20px, 2.4vw, 28px)/1.5 var(--font-head); max-width: 64ch; margin-inline: auto; text-align: center; color: var(--text); }
.statement b { color: var(--gold); font-weight: 500; }
.logos { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-top: 28px; }
.logos li { padding: 12px 22px; border: 1px solid var(--border); border-radius: 999px; background: var(--surface); font: 500 15px/1 var(--font-head); letter-spacing: .04em; }

/* ---------- Platform stack diagram ---------- */
.stack { display: grid; grid-template-columns: repeat(5, 1fr); gap: 28px; position: relative; perspective: 1400px; }
.stack__col { position: relative; border: 1px solid var(--border); border-radius: var(--r-md); background: var(--surface); padding: 20px 16px 18px; }
.stack__tag { font: 500 11px/1 var(--font-mono); letter-spacing: .1em; color: var(--gold); }
.stack__col h3 { font-size: 17px; font-weight: 700; margin: 8px 0 14px; text-transform: uppercase; }
.stack__col ul { display: grid; gap: 8px; }
.stack__col li { font-size: 13px; padding: 8px 10px; border-radius: 10px; background: rgba(255,255,255,.05); border: 1px solid var(--border); color: var(--text); line-height: 1.4; }
.stack__col li small { display: block; color: var(--muted); font-size: 11px; margin-top: 2px; }
.stack__col--core { border-color: rgba(253,199,71,.55); background: linear-gradient(180deg, rgba(253,199,71,.1), var(--surface)); }
@media (max-width: 1060px) {
  .stack { grid-template-columns: 1fr 1fr; }
  .stack__link { display: none; }
}
@media (max-width: 600px) { .stack { grid-template-columns: 1fr; } }
.stack__note { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.stack__note li { font: 400 12px/1 var(--font-mono); padding: 8px 12px; border: 1px dashed rgba(253,199,71,.5); border-radius: 999px; color: var(--gold); }

.stack__col { --lift: 0px; transform-style: preserve-3d; animation: stage 8s ease-in-out infinite; animation-delay: calc(var(--i, 0) * 1.4s); box-shadow: inset 0 1px 0 rgba(255,255,255,.07), 0 22px 30px -22px rgba(0,0,0,.9); transition: opacity .25s, border-color .25s, box-shadow .25s; }
.stack__col li { transform: translateZ(14px); transition: transform .25s, border-color .25s, background .25s; }
.stack__col:hover { border-color: var(--gold); animation-play-state: paused; box-shadow: inset 0 1px 0 rgba(255,255,255,.12), 0 30px 44px -22px rgba(253,199,71,.45); z-index: 2; }
.stack__col:hover li { transform: translateZ(26px); }
.stack__col li:hover { border-color: var(--gold); background: rgba(253,199,71,.12); transform: translateZ(40px) scale(1.03); }
.stack:has(.stack__col:hover) .stack__col:not(:hover) { opacity: .5; }
.stack:hover .stack__col { animation-play-state: paused; }
@keyframes stage {
  0%, 24%, 100% { border-color: var(--border); box-shadow: inset 0 1px 0 rgba(255,255,255,.07), 0 22px 30px -22px rgba(0,0,0,.9); }
  8%, 15% { border-color: rgba(253,199,71,.85); box-shadow: inset 0 1px 0 rgba(255,255,255,.12), 0 0 34px -4px rgba(253,199,71,.5), 0 22px 30px -22px rgba(0,0,0,.9); }
}
.stack__link { position: absolute; top: 50%; right: -28px; width: 28px; height: 2px; transform: translateZ(0); background: repeating-linear-gradient(90deg, rgba(253,199,71,.55) 0 5px, transparent 5px 9px); pointer-events: none; }
.stack__link::after { content: ''; position: absolute; right: -2px; top: -4px; border-left: 7px solid var(--gold); border-block: 5px solid transparent; }
.stack__link b { position: absolute; top: -3px; left: -4px; width: 8px; height: 8px; border-radius: 50%; background: #fff; box-shadow: 0 0 10px 2px var(--gold); opacity: 0; animation: pkt 1.8s linear infinite; animation-delay: calc(var(--n) * .6s); }
@keyframes pkt { 0% { left: -4px; opacity: 0; } 15%, 85% { opacity: 1; } 100% { left: 24px; opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .stack__col, .stack__link b { animation: none !important; } .stack__link b { opacity: 1; left: 10px; } }

/* ---------- Feature grid ---------- */
.fgrid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.fgrid li { display: flex; flex-direction: column; gap: 10px; padding: 26px; border: 1px solid var(--border); border-radius: var(--r-md); background: var(--surface); transition: border-color .25s, transform .25s; }
.fgrid li:hover { border-color: var(--border-strong); transform: translateY(-3px); }
.fgrid h3 { font-size: 16px; font-weight: 700; text-transform: uppercase; letter-spacing: .02em; }
.fgrid p { font-size: 14.5px; color: var(--muted); }
@media (max-width: 900px) { .fgrid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .fgrid { grid-template-columns: 1fr; } }

.checks { display: grid; gap: 12px; }
.checks li { display: flex; gap: 12px; align-items: flex-start; font-size: 15.5px; }
.checks li::before { content: ''; flex: none; width: 20px; height: 20px; margin-top: 3px; border-radius: 50%; background: rgba(253,199,71,.18) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23FDC747' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") center/12px no-repeat; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(28px, 5vw, 72px); align-items: center; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; } }
.visual { aspect-ratio: 1.2; border-radius: var(--r-md); border: 1px dashed rgba(253,199,71,.4); display: grid; place-items: center; color: var(--gold); background: radial-gradient(circle at 50% 50%, rgba(253,199,71,.16), transparent 65%), linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px) 0 0/24px 24px, linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px) 0 0/24px 24px; }

/* ---------- Ngành (industries) ---------- */
.industries { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.industries li { display: flex; align-items: center; gap: 12px; padding: 16px 18px; border: 1px solid var(--border); border-radius: 14px; background: var(--surface); font-weight: 500; font-size: 15px; transition: border-color .2s, transform .2s; }
.industries li:hover { border-color: var(--border-strong); transform: translateY(-2px); }
.industries .ico { color: var(--gold); width: 24px; height: 24px; }
@media (max-width: 900px) { .industries { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .industries { grid-template-columns: 1fr; } }

/* ---------- Orbit (dịch vụ AIoT) ---------- */
.orbit { position: relative; width: min(100%, 620px); height: 600px; margin-inline: auto; --rx: 240px; }
.orbit::before { content: ''; position: absolute; left: 50%; top: 50%; width: calc(var(--rx) * 2); height: calc(var(--rx) * 2); transform: translate(-50%, -50%); border: 1px dashed rgba(253,199,71,.4); border-radius: 50%; }
.orbit__core { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); width: 34%; aspect-ratio: 1; border-radius: 50%; display: grid; place-items: center; text-align: center; background: radial-gradient(circle at 35% 30%, #fff, #D9DDE6 60%, #9AA2B2); color: #1b2440; font: 700 clamp(22px, 4.5vw, 38px)/1 var(--font-head); box-shadow: 0 0 0 10px rgba(253,199,71,.25), 0 0 60px 8px rgba(253,199,71,.35); }
.orbit__core small { display: block; font: 500 11px/1.3 var(--font-mono); color: #5a6070; margin-top: 4px; letter-spacing: .08em; }
.orbit__nodes li { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%) rotate(calc(var(--a) + var(--spin, 0deg))) translateX(var(--rx)) rotate(calc((var(--a) + var(--spin, 0deg)) * -1)); cursor: default; outline: none; display: flex; flex-direction: column; align-items: center; gap: 8px; width: 110px; text-align: center; font-size: 13px; font-weight: 600; }
.orbit__nodes li span { transition: transform .25s, box-shadow .25s, border-color .25s; display: grid; place-items: center; width: 56px; height: 56px; border-radius: 50%; background: #0E0F15; border: 1px solid rgba(253,199,71,.6); color: var(--gold); box-shadow: 0 0 24px -4px rgba(253,199,71,.5); }
@property --spin { syntax: '<angle>'; inherits: true; initial-value: 0deg; }
@keyframes orbit-spin { to { --spin: 360deg; } }
@keyframes comet { to { transform: translate(-50%, -50%) rotate(360deg); } }
.orbit--live .orbit__nodes { animation: orbit-spin 80s linear infinite; }
.orbit:hover .orbit__nodes, .orbit:focus-within .orbit__nodes { animation-play-state: paused; }
.orbit::after { content: ''; position: absolute; left: 50%; top: 50%; width: calc(var(--rx) * 2); height: calc(var(--rx) * 2); border-radius: 50%; transform: translate(-50%, -50%); background: conic-gradient(from 0deg, transparent 0 78%, rgba(253,199,71,.95) 100%); -webkit-mask: radial-gradient(circle, transparent calc(50% - 3px), #000 calc(50% - 2px) 50%, transparent calc(50% + 1px)); mask: radial-gradient(circle, transparent calc(50% - 3px), #000 calc(50% - 2px) 50%, transparent calc(50% + 1px)); animation: comet 7s linear infinite; pointer-events: none; }
.orbit__core { animation: breathe 4s ease-in-out infinite; }
@keyframes breathe { 50% { box-shadow: 0 0 0 16px rgba(253,199,71,.12), 0 0 80px 14px rgba(253,199,71,.45); } }
.orbit__nodes li:hover span, .orbit__nodes li:focus-visible span { transform: scale(1.22) translateZ(0); border-color: var(--gold); box-shadow: 0 0 34px 2px rgba(253,199,71,.8); }
.orbit__nodes li small { position: absolute; top: calc(100% - 4px); left: 50%; transform: translate(-50%, 6px); width: 150px; padding: 6px 10px; border-radius: 10px; border: 1px solid rgba(253,199,71,.5); background: rgba(6,6,10,.95); color: var(--text); font: 400 12px/1.4 var(--font-body); opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s; z-index: 3; }
.orbit__nodes li:hover small, .orbit__nodes li:focus-visible small { opacity: 1; transform: translate(-50%, 0); }
@media (prefers-reduced-motion: reduce) { .orbit::after, .orbit__core { animation: none !important; } }
@media (max-width: 640px) {
  .orbit::after { display: none; }
  .orbit__nodes li small { display: none; }
  .orbit { height: auto; display: grid; gap: 24px; }
  .orbit::before { display: none; }
  .orbit__core { position: static; transform: none; width: 150px; justify-self: center; }
  .orbit__nodes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px 8px; }
  .orbit__nodes li { position: static; transform: none; width: auto; }
}

/* ---------- Dịch vụ giá trị gia tăng / persona ---------- */
.vas { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.vas li { padding: 24px; border: 1px solid var(--border); border-radius: var(--r-md); background: var(--surface); display: flex; flex-direction: column; gap: 12px; }
.vas .card__ico { width: 48px; height: 48px; }
.vas h3 { font-size: 18px; font-weight: 700; }
.vas p { font-size: 14.5px; color: var(--muted); }
@media (max-width: 900px) { .vas { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .vas { grid-template-columns: 1fr; } }
.persona { display: grid; grid-template-columns: 240px 1fr; gap: 28px; align-items: center; }
.persona__who { text-align: center; padding: 28px 18px; border-radius: var(--r-md); border: 1px solid rgba(253,199,71,.5); background: rgba(253,199,71,.08); color: var(--gold); font: 500 20px/1.4 var(--font-head); }
.persona__who .ico { width: 56px; height: 56px; margin: 0 auto 12px; stroke-width: 1.3; }
.persona ul { display: grid; gap: 12px; }
.persona li { display: flex; gap: 14px; align-items: flex-start; padding: 16px 18px; border: 1px solid var(--border); border-radius: 14px; background: var(--surface); color: var(--gold); font-size: 16px; }
.persona li .ico { margin-top: 3px; }
.persona__out { margin-top: 20px; padding: 20px 22px; border-radius: 14px; border: 1px dashed rgba(253,199,71,.6); color: var(--gold); display: flex; gap: 14px; align-items: flex-start; }
@media (max-width: 800px) { .persona { grid-template-columns: 1fr; } }

/* ---------- AI Vision ---------- */
.ai-modes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; counter-reset: m; }
.ai-modes li { counter-increment: m; padding: 22px; border: 1px solid var(--border); border-radius: var(--r-md); background: var(--surface); font-weight: 500; }
.ai-modes li::before { content: '0' counter(m); display: block; font: 500 12px/1 var(--font-mono); color: var(--gold); margin-bottom: 10px; }
@media (max-width: 760px) { .ai-modes { grid-template-columns: 1fr; } }
.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chips li { padding: 10px 16px; border-radius: 999px; background: var(--surface); border: 1px solid var(--border); font-size: 14px; display: inline-flex; gap: 8px; align-items: center; }
.chips li::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--gold); }
.scen h3 { font-size: 19px; font-weight: 700; margin: 14px 0 12px; }
.scen ul { display: grid; gap: 7px; }
.scen li { font-size: 14px; color: var(--muted); padding-left: 16px; position: relative; }
.scen li::before { content: ''; position: absolute; left: 0; top: .72em; width: 6px; height: 2px; background: var(--gold); }

/* ---------- Sản phẩm ---------- */
.subnav { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 36px; }
.subnav a { padding: 10px 18px; border-radius: 999px; border: 1px solid var(--border); background: var(--surface); font-size: 14px; font-weight: 600; transition: border-color .2s, color .2s; }
.subnav a:hover { border-color: var(--border-strong); color: var(--gold); }
.product { display: flex; flex-direction: column; gap: 12px; }
.product h3 { font-size: 18px; font-weight: 700; margin: 0; }
.product p { font-size: 14.5px; color: var(--muted); }
.product .card__ico { width: 48px; height: 48px; }
.product__tag { font: 500 11px/1 var(--font-mono); letter-spacing: .08em; color: var(--gold-text); text-transform: uppercase; }
.group-title { display: flex; align-items: center; gap: 14px; margin: 56px 0 24px; font: 700 clamp(22px, 2.6vw, 30px)/1.2 var(--font-head); text-transform: uppercase; }
.group-title:first-of-type { margin-top: 0; }
.group-title::after { content: ''; flex: 1; height: 1px; background: linear-gradient(90deg, var(--border-strong), transparent); }

/* ---------- Console ---------- */
.console { border: 1px solid var(--border); border-radius: var(--r-md); background: linear-gradient(180deg, #0E0F15, #08080C); overflow: hidden; box-shadow: 0 40px 80px -40px rgba(253,199,71,.3); color: var(--text); }
.console__bar { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; padding: 14px 20px; border-bottom: 1px solid var(--border); font-size: 13px; }
.console__bar .badge { margin-left: auto; padding: 5px 10px; border-radius: 999px; border: 1px solid rgba(253,199,71,.5); color: var(--gold); font: 500 11px/1 var(--font-mono); }
.live { display: inline-flex; align-items: center; gap: 8px; font: 500 12px/1 var(--font-mono); color: var(--green); text-transform: uppercase; letter-spacing: .1em; }
.live i { width: 8px; height: 8px; border-radius: 50%; background: var(--green); animation: ping 2s infinite; }
.console__body { display: grid; grid-template-columns: 320px 1fr; min-height: 460px; }
.sensors { border-right: 1px solid var(--border); padding: 10px; display: flex; flex-direction: column; gap: 4px; }
.sensors button { width: 100%; text-align: left; display: grid; grid-template-columns: 1fr auto; gap: 2px 12px; align-items: center; padding: 12px 14px; border-radius: 12px; border: 1px solid transparent; background: transparent; min-height: 56px; transition: background .2s, border-color .2s; }
.sensors button:hover { background: var(--surface); }
.sensors button[aria-pressed="true"] { background: rgba(253,199,71,.09); border-color: rgba(253,199,71,.4); }
.sensors .s-name { font-weight: 600; font-size: 14px; }
.sensors .s-id { grid-column: 1; font: 400 11px/1.2 var(--font-mono); color: var(--muted); }
.sensors .s-val { grid-row: 1 / span 2; grid-column: 2; font: 500 15px/1 var(--font-mono); display: flex; align-items: center; gap: 8px; }
.sensors .s-val::before { content: ''; width: 8px; height: 8px; border-radius: 50%; background: var(--green); }
.sensors .is-warn .s-val::before { background: var(--orange); }
.sensors .is-crit .s-val::before { background: var(--red); }
.detail { padding: clamp(18px, 3vw, 32px); display: flex; flex-direction: column; gap: 14px; min-width: 0; }
.detail__head { display: flex; justify-content: space-between; gap: 16px; align-items: flex-start; }
.detail h3 { font-size: 24px; font-weight: 500; margin-top: 4px; }
.status { padding: 6px 12px; border-radius: 999px; font: 500 12px/1 var(--font-mono); border: 1px solid; white-space: nowrap; }
.status.ok { color: var(--green); border-color: rgba(52,211,153,.4); background: rgba(52,211,153,.08); }
.status.warn { color: var(--orange); border-color: rgba(251,146,60,.45); background: rgba(251,146,60,.08); }
.status.crit { color: var(--red); border-color: rgba(248,113,113,.4); background: rgba(248,113,113,.08); }
.detail__val { display: flex; align-items: baseline; gap: 8px; }
.detail__val #dVal { font-size: clamp(40px, 6vw, 64px); font-weight: 500; line-height: 1; letter-spacing: -.03em; }
.chart { width: 100%; height: 160px; border-radius: 12px; background: linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px) 0 0/100% 40px; border: 1px solid var(--border); }
.chart .area { fill: url(#areaGrad); }
.chart .line { fill: none; stroke: var(--gold); stroke-width: 2; vector-effect: non-scaling-stroke; stroke-linejoin: round; }
.chart .thr { stroke: var(--orange); stroke-dasharray: 5 5; stroke-width: 1; vector-effect: non-scaling-stroke; opacity: .8; }
.alerts { display: grid; gap: 8px; margin-top: 4px; }
.alerts li { display: flex; gap: 12px; align-items: baseline; font-size: 13px; padding: 10px 12px; border-radius: 10px; background: var(--surface); border: 1px solid var(--border); }
.alerts time { font: 400 12px/1 var(--font-mono); color: var(--muted); flex: none; }
.alerts .lv { font: 500 11px/1 var(--font-mono); flex: none; }
.alerts .lv.info { color: var(--gold); } .alerts .lv.warn { color: var(--orange); } .alerts .lv.crit { color: var(--red); }
@media (max-width: 860px) {
  .console__body { grid-template-columns: 1fr; }
  .sensors { border-right: 0; border-bottom: 1px solid var(--border); flex-direction: row; overflow-x: auto; scroll-snap-type: x proximity; padding: 10px; }
  .sensors li { flex: none; width: 240px; scroll-snap-align: start; }
  .console__bar .badge { margin-left: 0; }
}

/* ---------- Cam kết / CTA / form ---------- */
.cta { background: radial-gradient(ellipse 70% 60% at 80% 0%, rgba(253,199,71,.14), transparent 60%), var(--bg-2); border-top: 1px solid var(--border); }
.cta__inner { display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(32px, 6vw, 80px); align-items: start; }
.commit { margin-top: 24px; display: grid; gap: 10px; }
.contact { margin-top: 24px; display: grid; gap: 12px; }
.contact li { display: flex; align-items: flex-start; gap: 12px; color: var(--muted); }
.contact .ico { color: var(--gold); margin-top: 3px; }
.contact a:hover { color: var(--text); }
.form { display: grid; gap: 16px; padding: clamp(22px, 3vw, 32px); border: 1px solid var(--border); border-radius: var(--r-md); background: rgba(6,6,10,.75); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); }
.form label { display: grid; gap: 6px; font-size: 14px; font-weight: 600; color: var(--muted); }
.form .opt { font-weight: 400; opacity: .8; }
.form input, .form select, .form textarea { width: 100%; min-height: 46px; padding: 11px 14px; border-radius: 12px; background: var(--surface); border: 1px solid var(--border); color: var(--text); transition: border-color .2s, background .2s; }
.form textarea { resize: vertical; min-height: 110px; }
.form input:hover, .form textarea:hover { border-color: rgba(255,255,255,.3); }
.form input:focus, .form textarea:focus { outline: none; border-color: var(--gold); background: var(--surface-2); box-shadow: 0 0 0 3px rgba(253,199,71,.2); }
.form input[aria-invalid="true"] { border-color: var(--red); }
.form__msg { font-size: 14px; min-height: 20px; color: var(--green); }
.form__msg.err { color: var(--red); }
@media (max-width: 900px) { .cta__inner { grid-template-columns: 1fr; } }

.company { display: grid; grid-template-columns: 180px 1fr; gap: 10px 24px; font-size: 15px; }
.company dt { color: var(--muted); }
.company dd { margin: 0; }
@media (max-width: 560px) { .company { grid-template-columns: 1fr; gap: 2px; } .company dd { margin-bottom: 12px; } }

.doc { max-width: 780px; }
.doc h2 { font-size: 26px; margin: 48px 0 16px; text-transform: none; font-weight: 700; }
.doc h2:first-child { margin-top: 0; }
.doc h2::after { width: 56px; height: 3px; margin-top: 12px; }
.doc p, .doc li { color: var(--muted); }
.doc ul { list-style: disc; padding-left: 20px; display: grid; gap: 6px; margin-top: 10px; }
.notice { padding: 14px 18px; border-radius: 12px; border: 1px solid rgba(251,146,60,.5); background: rgba(251,146,60,.08); color: var(--orange); font-size: 14px; margin-bottom: 32px; }

/* ---------- Footer ---------- */
.footer { background: #06060A; border-top: 1px solid var(--border); color: var(--text); }
.footer__grid { display: grid; grid-template-columns: 1.5fr repeat(5, 1fr); gap: 32px; padding-block: 56px 40px; }
.footer__brand img { width: 84px; height: auto; margin-bottom: 14px; }
.footer__brand h2 { font: 700 13px/1.4 var(--font-head); color: var(--gold); text-transform: none; letter-spacing: .04em; margin-bottom: 14px; }
.footer__brand h2::after { display: none; }
.footer__brand .contact { margin-top: 0; font-size: 14px; }
.footer__col { display: flex; flex-direction: column; gap: 10px; font-size: 14px; }
.footer__col h3 { font: 700 13px/1 var(--font-head); color: var(--gold); text-transform: uppercase; letter-spacing: .06em; margin-bottom: 6px; }
.footer__col a { color: var(--muted); transition: color .2s; }
.footer__col a:hover { color: var(--gold); }
.footer__legal { border-top: 1px solid var(--border); padding-block: 22px; font-size: 12.5px; color: var(--muted); text-align: center; line-height: 1.8; }
@media (max-width: 1100px) { .footer__grid { grid-template-columns: repeat(3, 1fr); } .footer__brand { grid-column: 1 / -1; } }
@media (max-width: 560px) { .footer__grid { grid-template-columns: 1fr 1fr; } }

/* ---------- Trust bar / marquee / badges ---------- */
.section--tight { padding-block: clamp(48px, 6vw, 80px); }
.trust { background: var(--bg-2); border-block: 1px solid var(--border); }
.trust__inner { display: grid; grid-template-columns: auto 1fr auto; gap: 20px 28px; align-items: center; padding-block: 22px; }
.trust__label { font: 500 12px/1.3 var(--font-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); max-width: 11ch; }
.marquee { overflow: hidden; display: flex; -webkit-mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent); mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent); }
.marquee__track { display: flex; flex: none; gap: 12px; min-width: 100%; padding-right: 12px; animation: marquee 32s linear infinite; align-items: center; }
.marquee:hover .marquee__track { animation-play-state: paused; }
@keyframes marquee { to { transform: translateX(-100%); } }
.cust { flex: none; display: inline-flex; align-items: center; min-height: 40px; padding: 8px 18px; border: 1px solid var(--border); border-radius: 999px; background: var(--surface); font: 500 15px/1.2 var(--font-head); letter-spacing: .02em; white-space: nowrap; color: var(--text); }
.cust img { height: 28px; width: auto; }
.custs { display: flex; flex-wrap: wrap; gap: 8px; }
.badges { display: flex; flex-wrap: wrap; gap: 8px; }
.badges li { display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px; border-radius: 999px; border: 1px solid rgba(253,199,71,.55); background: rgba(253,199,71,.08); color: var(--gold); font: 500 13px/1 var(--font-mono); white-space: nowrap; }
.badges .ico { width: 16px; height: 16px; }
.badges--footer { margin-top: 18px; }
@media (max-width: 1000px) { .trust__inner { grid-template-columns: 1fr; } .trust__label { max-width: none; } }
@media (prefers-reduced-motion: reduce) { .marquee { -webkit-mask-image: none; mask-image: none; } .marquee__track { animation: none; flex-wrap: wrap; } .marquee__track[aria-hidden="true"] { display: none; } }

/* ---------- Feed / Mới nhất ---------- */
.feed { display: flex; flex-direction: column; gap: 10px; }
.feed__top { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; font: 400 12px/1 var(--font-mono); color: var(--muted); }
.feed__top time { margin-left: auto; }
.feed__kind { display: inline-flex; align-items: center; gap: 6px; color: var(--gold); text-transform: uppercase; letter-spacing: .08em; font-weight: 500; }
.feed__kind .ico { width: 16px; height: 16px; }
.feed__tag--soon { padding: 4px 8px; border-radius: 999px; border: 1px solid rgba(251,146,60,.5); color: var(--orange); }
.feed h3 { margin: 0; font-size: 18px; font-weight: 500; line-height: 1.35; }
.feed h3 a:hover, .timeline h3 a:hover { color: var(--gold); }
.feed p { font-size: 14.5px; color: var(--muted); }

/* ---------- Giải pháp đóng gói ---------- */
.sols { align-items: stretch; }
.sol { display: flex; flex-direction: column; gap: 14px; padding: 30px; }
.sol__head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.sol__sector { font: 500 12px/1 var(--font-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--gold); }
.sol h3 { margin: 4px 0 0; font-size: 24px; font-weight: 700; }
.sol__blk { padding: 14px 16px; border-radius: 14px; border: 1px solid var(--border); background: rgba(255,255,255,.03); }
.sol__blk b { display: block; font: 500 11px/1 var(--font-mono); letter-spacing: .1em; text-transform: uppercase; margin-bottom: 8px; color: var(--muted); }
.sol__blk p { font-size: 14.5px; color: var(--text); }
.sol__blk--pain { border-left: 3px solid var(--orange); }
.sol__blk--pain b { color: var(--orange); }
.sol__blk--digo { border-left: 3px solid var(--gold); }
.sol__blk--digo b { color: var(--gold); }
.sol .cust { min-height: 32px; padding: 5px 12px; font-size: 13px; }
.sol .more { margin-top: auto; padding-top: 4px; }
.more { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; font-size: 14px; color: var(--gold-text); transition: gap .2s; }
.more:hover { gap: 10px; }
.more .ico { width: 16px; height: 16px; }
.tablewrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--r-md); }
.compare { width: 100%; border-collapse: collapse; font-size: 14.5px; min-width: 760px; }
.compare th, .compare td { text-align: left; vertical-align: top; padding: 16px 18px; border-bottom: 1px solid var(--border); }
.compare thead th { font: 500 12px/1 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--gold); background: var(--surface); }
.compare tbody th a { font: 700 16px/1.3 var(--font-head); }
.compare tbody th a:hover { color: var(--gold); }
.compare td { color: var(--muted); }
.compare tr:last-child > * { border-bottom: 0; }

/* trang chi tiết giải pháp */
.crumbs { display: flex; flex-wrap: wrap; gap: 8px; font-size: 13px; color: var(--muted); margin-bottom: 22px; }
.crumbs a:hover { color: var(--gold); }
.pains { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.pain { padding: 28px; border: 1px solid var(--border); border-top: 3px solid var(--orange); border-radius: var(--r-md); background: var(--surface); }
.pain__n { display: block; font: 500 13px/1 var(--font-mono); color: var(--orange); margin-bottom: 14px; }
.pain p { font-size: 16px; }
@media (max-width: 900px) { .pains { grid-template-columns: 1fr; } }
.split--top { align-items: start; }
.stackcol { display: grid; gap: 28px; }
.mini { font: 500 12px/1 var(--font-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--gold); margin-bottom: 16px; }
.metrics { display: grid; gap: 10px; }
.metrics li { display: flex; gap: 10px; align-items: flex-start; padding: 12px 16px; border-radius: 12px; background: rgba(253,199,71,.08); border: 1px solid rgba(253,199,71,.35); font-weight: 600; }
.metrics .ico { color: var(--gold); margin-top: 3px; }
.custcard { display: flex; flex-direction: column; gap: 12px; }
.custcard .cust { font-size: 17px; }
.custcard p { font-size: 14.5px; }
blockquote { margin: 0; padding-left: 14px; border-left: 3px solid var(--gold); color: var(--muted); font-style: italic; font-size: 14.5px; }
.others { list-style: none; padding: 0; }
.others a { display: block; height: 100%; }
.others h3 { margin: 14px 0 8px; font-size: 18px; }
.group-link { margin-left: auto; font: 600 14px/1 var(--font-body); text-transform: none; color: var(--gold); }
.group-title .ico { color: var(--gold); width: 28px; height: 28px; }

/* ---------- Chứng nhận ---------- */
.certs { margin-top: 8px; }
.cert { display: flex; flex-direction: column; gap: 10px; }
.cert h3 { font-size: 26px; font-weight: 700; margin: 14px 0 0; }
.cert__title { color: var(--gold); font-weight: 600; }
.cert__meta { display: grid; grid-template-columns: auto 1fr; gap: 6px 18px; margin: 8px 0 0; font-size: 14px; }
.cert__meta dt { color: var(--muted); }
.cert__meta dd { margin: 0; }
.cert__scope { font-size: 14px; color: var(--muted); }
.cert__links { display: flex; gap: 20px; margin-top: 4px; }

/* ---------- Số liệu ---------- */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 16px; margin-bottom: 40px; }
.stats li { padding: 22px 24px; border: 1px solid var(--border); border-radius: var(--r-md); background: var(--surface); }
.stat__v, .stat__s { font: 700 clamp(36px, 4.5vw, 52px)/1 var(--font-head); background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat__l { display: block; margin-top: 8px; font-size: 14px; color: var(--muted); }

/* ---------- Timeline tin tức ---------- */
.chips.filters { margin-bottom: 32px; }
.chip { padding: 9px 16px; border-radius: 999px; border: 1px solid var(--border); background: var(--surface); font-size: 14px; font-weight: 600; transition: border-color .2s, color .2s, background .2s; }
.chip:hover { border-color: var(--border-strong); }
.chip.is-on { background: var(--grad); color: var(--on-gold); border-color: transparent; }
.timeline { position: relative; display: grid; gap: 20px; padding-left: 28px; }
.timeline::before { content: ''; position: absolute; left: 11px; top: 8px; bottom: 8px; width: 2px; background: linear-gradient(var(--gold), transparent); }
.timeline__item { position: relative; }
.timeline__item[hidden] { display: none; }
.timeline__dot { position: absolute; left: -28px; top: 18px; width: 24px; height: 24px; border-radius: 50%; display: grid; place-items: center; background: #06060A; border: 1px solid var(--gold); color: var(--gold); }
.timeline__dot .ico { width: 12px; height: 12px; }
.timeline h3 { font-size: 19px; font-weight: 500; margin: 12px 0 8px; }
.timeline p { font-size: 14.5px; color: var(--muted); }

/* ---------- Bộ đếm truy cập ---------- */
.visitors { margin: 0 auto 22px; max-width: 560px; }
.visitors h3 { font: 500 11px/1 var(--font-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--gold); margin-bottom: 12px; }
.visitors ul { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.visitors li { padding: 10px 6px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); }
.visitors li[hidden] { display: none; }
.visitors span { display: block; font: 500 18px/1.1 var(--font-mono); color: var(--text); }
.visitors small { font-size: 11px; color: var(--muted); }

/* ---------- Nghiêng 3D ---------- */
.tilt { transform: perspective(1000px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)); transition: transform .18s ease-out, border-color .25s, box-shadow .25s, opacity .25s; will-change: transform; }
.card.tilt:hover { transform: perspective(1000px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)) translateY(-4px); box-shadow: 0 28px 44px -26px rgba(253,199,71,.4); }
.stack__col.tilt { transform-style: preserve-3d; }

/* ---------- Motion ---------- */
@keyframes ping { 0% { box-shadow: 0 0 0 0 rgba(52,211,153,.55); } 70%, 100% { box-shadow: 0 0 0 10px rgba(52,211,153,0); } }
@keyframes ring { 0% { transform: scale(.4); opacity: .9; } 100% { transform: scale(2.4); opacity: 0; } }
.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; transition-delay: var(--d, 0s); }
.js .reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .reveal { opacity: 1; transform: none; }
}