/* MONA Software homepage — tokens, base, shared components. Spec: home/SPEC.md */
@font-face{font-family:"Be Vietnam Pro";src:url(../fonts/be-vietnam-pro-400.woff2) format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"Be Vietnam Pro";src:url(../fonts/be-vietnam-pro-500.woff2) format("woff2");font-weight:500;font-display:swap}
@font-face{font-family:"Be Vietnam Pro";src:url(../fonts/be-vietnam-pro-600.woff2) format("woff2");font-weight:600;font-display:swap}
@font-face{font-family:"Be Vietnam Pro";src:url(../fonts/be-vietnam-pro-700.woff2) format("woff2");font-weight:700;font-display:swap}
@font-face{font-family:"Be Vietnam Pro";src:url(../fonts/be-vietnam-pro-800.woff2) format("woff2");font-weight:800;font-display:swap}

@font-face{font-family:"JetBrains Mono";src:url(../fonts/jetbrains-mono-vietnamese.woff2) format("woff2");font-weight:500 700;font-display:swap;unicode-range:U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB}
@font-face{font-family:"JetBrains Mono";src:url(../fonts/jetbrains-mono-latin-ext.woff2) format("woff2");font-weight:500 700;font-display:swap;unicode-range:U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF}
@font-face{font-family:"JetBrains Mono";src:url(../fonts/jetbrains-mono-latin.woff2) format("woff2");font-weight:500 700;font-display:swap;unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}

:root{
  --night-950:#040f2b; --night-900:#081a42; --night-800:#0a1f55; --violet-800:#0d2a6a; --violet-700:#0f2f78; --violet-600:#16408f;
  --violet-500:#1767d6; --electric:#3b8ff0; --lilac:#86c2ff; --lilac-soft:#e3f0ff;
  --orange:#f68920; --orange-2:#ffb347;
  --orange-cta:linear-gradient(100deg,#ff9a2e,#f8771b 55%,#ef5a17);
  --ink:#16182c; --ink-2:#463d66; --ink-3:#8a83a3; --line:rgba(10,24,56,.1);
  --on-dark:#ffffff; --on-dark-2:#c3d0ea; --on-dark-3:#93a6cc;
  --white:#ffffff; --mist:#f4f7fc;
  --container:min(92vw,84rem);
  --font:"Be Vietnam Pro",system-ui,-apple-system,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,Menlo,monospace;
  --grad-dark:linear-gradient(90deg,#e6f3ff 0%,#8ccaff 100%);
  --grad-light:linear-gradient(90deg,#1159c4 0%,#4fa6ff 100%);
  --ease:cubic-bezier(.2,.7,.1,1);
  --seam:clamp(3rem,7vw,7.5rem);
}
html{font-size:16px;-webkit-text-size-adjust:100%}
@media (min-width:1441px){html{font-size:clamp(16px,calc(16px + (100vw - 1440px) * .0072),32px)}}
*,*::before,*::after{box-sizing:border-box}
body{margin:0;background:var(--white);color:var(--ink);font-family:var(--font);font-size:1.0625rem;line-height:1.65;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
main{position:relative;overflow-x:clip}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;cursor:pointer}
h1,h2,h3{margin:0;font-weight:800;letter-spacing:-.022em;line-height:1.2;text-wrap:balance}
p,li,figcaption{text-wrap:pretty}
p{margin:0}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.wrap{width:var(--container);margin-inline:auto;position:relative}
.is-intro{overflow:hidden}

/* type roles */
.t-display{font-size:clamp(2.1rem,4vw,3.4rem)}
.t-h2{font-size:clamp(1.9rem,3.6vw,3.1rem)}
.t-h3{font-size:1.35rem;line-height:1.3;font-weight:700}
.lead{font-size:1.125rem;line-height:1.65}
.kicker{display:inline-flex;align-items:center;gap:.75rem;font-family:var(--mono);font-size:.78rem;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--violet-500);margin-bottom:1.1rem}
.kicker::before{content:"";flex:none;width:8px;height:8px;border-radius:50%;background:currentColor;box-shadow:0 0 0 3px rgba(40,140,248,.14)}
.kicker svg{display:none}
.on-dark .kicker{color:#ffb08a}
.on-dark .kicker::before{background:#ff7a59;box-shadow:0 0 12px #ff7a59}
/* the one highlighted phrase in a heading */
.grad{background:var(--grad-light);-webkit-background-clip:text;background-clip:text;color:transparent;padding:.08em .02em;margin:-.08em -.02em;-webkit-box-decoration-break:clone;box-decoration-break:clone}
.on-dark .grad{background-image:var(--grad-dark)}
.nb{white-space:nowrap}
.numeral{font-weight:800;line-height:1;letter-spacing:-.04em;font-variant-numeric:tabular-nums;color:transparent;-webkit-text-stroke:1.5px rgba(10,24,56,.14);pointer-events:none;user-select:none}
.on-dark .numeral{-webkit-text-stroke:2px #cde6ff;filter:drop-shadow(0 0 2px #58a8ff) drop-shadow(0 0 1rem rgba(40,140,248,.85))}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.6rem;min-height:3.1rem;padding:.8rem 1.6rem;border-radius:.8rem;border:0;font-weight:700;font-size:1rem;white-space:nowrap;transition:transform .25s var(--ease),box-shadow .25s}
.btn svg{width:1rem;height:1rem;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
.btn--cta{background:var(--orange-cta);color:#fff;box-shadow:0 .9rem 2rem -.8rem rgba(239,90,23,.75)}
.btn--ghost{border:1.5px solid rgba(255,255,255,.7);color:#fff}
.btn--line{border:1.5px solid var(--ink);color:var(--ink)}
@media (hover:hover){.btn:hover{transform:translateY(-2px)}}

/* spark icon (the AI-era mark) */
.spark-i{width:1.15rem;height:1.15rem;display:inline-block;flex:none;overflow:visible}

/* header */
.hd{position:fixed;inset:0 0 auto;z-index:60;transition:background .35s,color .35s,box-shadow .35s;color:#fff}
.hd__in{width:var(--container);margin:auto;height:4.5rem;display:flex;align-items:center;gap:2rem}
.hd__logo{display:flex;align-items:center;gap:.6rem;min-height:2.75rem;font-weight:800;font-size:1.05rem;letter-spacing:.01em}
.hd__logo img{height:1.35rem;width:auto}
.hd__logo .logo-dark{display:none}
.hd__sub{font-weight:700;color:var(--orange);padding-left:.6rem;border-left:1px solid currentColor;line-height:1}
.hd__nav{display:flex;gap:2.4rem;margin-left:auto;margin-right:auto;font-size:.95rem;font-weight:500}
.hd__nav a{opacity:.9;padding:.6rem 0}
.hd__cta{min-height:2.75rem;padding:.55rem 1.1rem;border:1.5px solid currentColor;border-radius:999px;font-weight:700;font-size:.92rem;display:inline-flex;align-items:center;gap:.5rem;white-space:nowrap}
.hd__cta svg{width:.95rem;height:.95rem;fill:none;stroke:currentColor;stroke-width:2.2}
.hd.is-solid{background:rgba(6,18,50,.72);-webkit-backdrop-filter:blur(14px) saturate(140%);backdrop-filter:blur(14px) saturate(140%);box-shadow:0 1px 0 rgba(140,195,255,.18)}
.hd.is-light{color:var(--ink);background:rgba(255,255,255,.82);box-shadow:0 1px 0 var(--line)}
.hd.is-light .logo-light{display:none}
.hd.is-light .logo-dark{display:block}
.hd.is-light .hd__cta{background:var(--orange-cta);border-color:transparent;color:#fff}
.hd__burger{display:none}

/* reveal (only when JS runs) */
.js [data-reveal]{opacity:0;transform:translateY(1.5rem)}

@media (max-width:900px){
  .hd__nav{display:none}
  .hd__in{justify-content:space-between}
}
@media (prefers-reduced-motion:reduce){
  .js [data-reveal]{opacity:1;transform:none}
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
}

/* mobile menu: a drawer over the page (global rule: never a push-down dropdown) */
.hd__burger{position:relative;width:2.9rem;height:2.9rem;border-radius:.8rem;border:1.5px solid currentColor;background:transparent}
.hd__burger span{position:absolute;left:.8rem;right:.8rem;height:2px;border-radius:2px;background:currentColor}
.hd__burger span:first-child{top:1.05rem}.hd__burger span:last-child{bottom:1.05rem}
.drawer{position:fixed;inset:0;z-index:90}
.drawer[hidden]{display:none}
.drawer__scrim{position:absolute;inset:0;background:rgba(3,14,40,.55);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);opacity:0;transition:opacity .35s}
.drawer__panel{position:absolute;top:0;right:0;bottom:0;width:min(86vw,24rem);display:flex;flex-direction:column;gap:.5rem;padding:5.5rem 1.5rem calc(1.5rem + env(safe-area-inset-bottom));color:#fff;
  background:linear-gradient(180deg,#0a1f55,#081a42);border-left:1px solid rgba(140,195,255,.25);transform:translateX(100%);transition:transform .45s var(--ease)}
.drawer.is-open .drawer__scrim{opacity:1}
.drawer.is-open .drawer__panel{transform:none}
.drawer__x{position:absolute;top:1rem;right:1rem;width:2.9rem;height:2.9rem;border-radius:.8rem;border:1.5px solid rgba(255,255,255,.5);background:transparent;display:grid;place-items:center}
.drawer__x svg{width:1.2rem;height:1.2rem;stroke:#fff;stroke-width:2.2;stroke-linecap:round}
.drawer__nav{display:flex;flex-direction:column}
.drawer__nav a{display:flex;align-items:center;min-height:3.4rem;font-size:1.3rem;font-weight:700;border-bottom:1px solid rgba(140,195,255,.2)}
.drawer__cta{margin-top:auto}
.drawer__call{min-height:2.75rem;display:flex;align-items:center;justify-content:center;color:var(--on-dark-2);font-weight:600}
@media (min-width:901px){.hd__burger{display:none}}
@media (max-width:900px){.hd__cta{display:none}.hd__burger{display:block}}

/* ---------- content emphasis (after lastaisecret.mona.media) ---------- */
.prose b,.callout b,.pull b{font-weight:800;color:var(--ink)}
.on-dark .prose b,.on-dark .callout b,.on-dark .pull b{color:#fff}
/* callout: soft panel, bold lead-in question, bold facts inline */
.callout{position:relative;padding:1.4rem 1.6rem;border-radius:1rem;font-size:1.12rem;line-height:1.85;color:var(--ink-2);
  background:linear-gradient(135deg,#f2f7ff,#e8f1fd);border:1px solid rgba(40,140,248,.18);box-shadow:0 1.2rem 2.4rem -2rem rgba(10,24,56,.45)}
.callout .q{font-weight:800;color:var(--ink)}
.on-dark .callout{color:#d3dff3;background:linear-gradient(135deg,rgba(255,255,255,.07),rgba(255,255,255,.03));border-color:rgba(165,208,255,.28);box-shadow:none}
.on-dark .callout .q{color:#fff}
/* pill: the one payoff phrase, gradient chip */
.pill{display:inline;padding:.12em .4em;border-radius:.35em;font-weight:800;text-transform:uppercase;letter-spacing:.01em;color:#fff;white-space:nowrap;
  background:linear-gradient(95deg,#b3237f,#288cf8);-webkit-box-decoration-break:clone;box-decoration-break:clone}
/* pull statement: bold line with a coral bar */
.pull{position:relative;padding:.2rem 0 .2rem 1.4rem;font-size:clamp(1.15rem,1.6vw,1.35rem);line-height:1.6;font-weight:700;color:var(--ink)}
.pill--wrap{white-space:normal}
.pull::before{content:"";position:absolute;left:0;top:.2rem;bottom:.2rem;width:3px;border-radius:3px;background:linear-gradient(180deg,#ff7a59,#f68920)}
.pull .hl{color:#1767d6;text-transform:uppercase}
.on-dark .pull{color:#e8f1fd}
.on-dark .pull .hl{color:#9fd2ff}
.link-arrow{display:inline-flex;align-items:center;gap:.4rem;margin-top:.9rem;font-weight:700;color:#2f6bff;border-bottom:1px solid currentColor}
/* MONA.Software logo (raster, 785×188) */
.hd__logo img{height:2.35rem;width:auto}
.ft__logo img{height:2.6rem;width:auto}

/* ===== palette rebalanced toward the MONA.Software logo (grey #3c3c3c + blue #288cf8), Nhựt 24/09/2026.
   Violet stays for the dark bands; text accents, highlights and chips move to the logo blue. ===== */
:root{
  --blue:#288cf8; --blue-600:#1767d6; --blue-700:#0f4fb0; --blue-300:#8cc6ff; --blue-50:#eef6ff;
  --grad-light:linear-gradient(90deg,#1159c4 0%,#288cf8 60%,#4fa6ff 100%);
  --grad-dark:linear-gradient(90deg,#e6f3ff 0%,#8ccaff 100%);
}
.kicker{color:var(--blue-600)}
.kicker::before{box-shadow:0 0 0 3px rgba(40,140,248,.16)}
.callout{background:linear-gradient(135deg,#f3f8ff,#e9f2ff);border-color:rgba(40,140,248,.2);box-shadow:0 1.2rem 2.4rem -2rem rgba(15,79,176,.4)}
.pill{background:linear-gradient(95deg,#1159c4,#288cf8)}
.pull .hl{color:var(--blue-600)}
.on-dark .pull .hl{color:#9fd2ff}
.link-arrow{color:var(--blue-600)}
/* text ink closer to the logo's dark grey (was a deep violet) */
:root{--ink:#16182c;--ink-2:#474a62;--ink-3:#8a8ca2;--line:rgba(22,24,44,.1)}

/* no orphan words: short UI text balances its lines, running text avoids a lonely last word */
h1,h2,h3,h4,.kicker,label,button,.btn,b,small,figcaption{text-wrap:balance}
p,li,blockquote,dd,span{text-wrap:pretty}