/* BLACKCAT WHALE - public site (home / about / privacy / terms): AI premium look */
:root {
  --bg: #03050a; --bg2: #070b14; --panel: rgba(14,19,32,.62); --panel2: rgba(20,27,44,.7);
  --line: rgba(148,163,184,.12); --line2: rgba(148,163,184,.22);
  --text: #eef2f8; --muted: #94a0b6; --dim: #5d6880;
  --gold: #f0c35a; --gold2: #c9982f; --ai1: #22d3ee; --ai2: #8b5cf6; --ai3: #ec4899;
  --green: #16c784; --red: #ea3943;
  --mono: "JetBrains Mono", ui-monospace, Consolas, monospace;
  --r: 20px;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; overflow-x: hidden; }
.hero { overflow-x: clip; }
body { margin: 0; background: var(--bg); color: var(--text); overflow-x: hidden; font: 16px/1.65 Inter, "Noto Sans Khmer", system-ui, sans-serif; }
html[lang="km"] body { font-family: "Noto Sans Khmer", Inter, system-ui, sans-serif; line-height: 1.8; }
html[lang="km"] .en, html[lang="en"] .km { display: none !important; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.mono { font-family: var(--mono); }
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 22px; }
.grad { background: linear-gradient(100deg, #fff 0%, var(--ai1) 35%, var(--ai2) 65%, var(--gold) 100%); background-size: 200% auto; -webkit-background-clip: text; background-clip: text; color: transparent; animation: shine 8s linear infinite; }
.goldtxt { background: linear-gradient(180deg, #ffe7a6, var(--gold) 50%, var(--gold2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
@keyframes shine { to { background-position: 200% center; } }

/* --- animated background: aurora + grid + noise --- */
.bg { position: fixed; inset: 0; z-index: -2; pointer-events: none; overflow: hidden; }
.bg::before { content: ""; position: absolute; inset: 0;
  background: linear-gradient(rgba(148,163,184,.04) 1px, transparent 1px) 0 0 / 100% 44px, linear-gradient(90deg, rgba(148,163,184,.04) 1px, transparent 1px) 0 0 / 44px 100%;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 20%, #000 30%, transparent 80%); -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 20%, #000 30%, transparent 80%); }
.blob { position: absolute; border-radius: 50%; filter: blur(90px); opacity: .5; animation: float 18s ease-in-out infinite; }
.blob.b1 { width: 620px; height: 620px; left: -160px; top: -200px; background: radial-gradient(circle, rgba(34,211,238,.55), transparent 65%); }
.blob.b2 { width: 700px; height: 700px; right: -220px; top: -120px; background: radial-gradient(circle, rgba(139,92,246,.55), transparent 65%); animation-delay: -6s; }
.blob.b3 { width: 560px; height: 560px; left: 30%; top: 55%; background: radial-gradient(circle, rgba(240,195,90,.28), transparent 65%); animation-delay: -12s; }
@keyframes float { 50% { transform: translate(40px, 30px) scale(1.08); } }

/* --- nav --- */
.nav { position: sticky; top: 0; z-index: 50; backdrop-filter: blur(18px) saturate(140%); -webkit-backdrop-filter: blur(18px) saturate(140%); background: rgba(3,5,10,.55); border-bottom: 1px solid var(--line); }
.nav .wrap { display: flex; align-items: center; gap: 22px; height: 66px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 900; letter-spacing: .1em; font-size: 15px; white-space: nowrap; }
.logo img { width: 34px; height: 34px; border-radius: 10px; box-shadow: 0 0 0 1px var(--line2), 0 0 22px rgba(139,92,246,.45); }
.logo b { color: var(--gold); }
.links { display: flex; gap: 4px; margin-left: 12px; }
.links a { padding: 7px 12px; border-radius: 10px; font-size: 14px; color: var(--muted); font-weight: 600; transition: .2s; }
.links a:hover, .links a.on { color: var(--text); background: rgba(148,163,184,.08); }
.sp { flex: 1; }
.lang { display: inline-flex; border: 1px solid var(--line2); border-radius: 10px; overflow: hidden; }
.lang button { background: transparent; border: 0; color: var(--muted); padding: 6px 10px; font: 700 12px var(--mono); cursor: pointer; }
.lang button.on { background: rgba(240,195,90,.15); color: var(--gold); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 11px 20px; border-radius: 12px; font-weight: 700; font-size: 14.5px; border: 1px solid var(--line2); background: rgba(148,163,184,.06); transition: transform .2s, box-shadow .2s, border-color .2s; cursor: pointer; white-space: nowrap; }
.btn:hover { transform: translateY(-1px); border-color: rgba(139,92,246,.6); box-shadow: 0 8px 30px rgba(139,92,246,.25); }
.btn.gold { background: linear-gradient(180deg, #ffe08a, #e2ad3c 60%, #c28b22); color: #1b1404; border: 0; box-shadow: 0 8px 30px rgba(240,195,90,.3), inset 0 1px 0 rgba(255,255,255,.5); }
.btn.gold:hover { box-shadow: 0 12px 40px rgba(240,195,90,.45), inset 0 1px 0 rgba(255,255,255,.5); }
.btn.ai { background: linear-gradient(120deg, rgba(34,211,238,.18), rgba(139,92,246,.22)); border-color: rgba(139,92,246,.45); }
.btn.sm { padding: 8px 14px; font-size: 13.5px; border-radius: 10px; }
.burger { display: none; background: transparent; border: 1px solid var(--line2); border-radius: 10px; width: 40px; height: 38px; color: var(--text); font-size: 18px; cursor: pointer; }

/* --- hero --- */
.hero { padding: 90px 0 40px; text-align: center; position: relative; }
.badge { display: inline-flex; align-items: center; gap: 8px; padding: 6px 14px 6px 8px; border-radius: 999px; border: 1px solid rgba(139,92,246,.4); background: rgba(139,92,246,.1); font-size: 13px; font-weight: 600; color: #d6ccff; }
.badge i { width: 22px; height: 22px; border-radius: 50%; background: radial-gradient(circle at 35% 30%, #fff, var(--ai1) 25%, var(--ai2) 70%); box-shadow: 0 0 14px rgba(34,211,238,.7); display: inline-block; }
h1 { font-size: clamp(38px, 6.4vw, 76px); line-height: 1.04; letter-spacing: -.035em; margin: 22px auto 18px; font-weight: 900; max-width: 15ch; }
html[lang="km"] h1 { letter-spacing: 0; line-height: 1.3; font-size: clamp(32px, 5.2vw, 62px); max-width: 18ch; }
.lead { font-size: clamp(16px, 1.6vw, 19px); color: var(--muted); max-width: 680px; margin: 0 auto; }
.cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 34px; }
.trust { display: flex; gap: 28px; justify-content: center; flex-wrap: wrap; margin-top: 46px; color: var(--dim); font-size: 13px; }
.trust b { display: block; font: 800 26px/1.1 var(--mono); color: var(--text); letter-spacing: -.02em; }

/* --- product preview (device frame) --- */
.showcase { position: relative; margin: 60px auto 0; max-width: 1100px; }
.showcase::before { content: ""; position: absolute; inset: -40px -20px auto; height: 70%; background: radial-gradient(ellipse at 50% 40%, rgba(139,92,246,.35), transparent 70%); filter: blur(30px); z-index: -1; }
.frame { border-radius: 22px; padding: 1px; background: linear-gradient(140deg, rgba(34,211,238,.7), rgba(139,92,246,.5) 40%, rgba(240,195,90,.45) 80%, rgba(34,211,238,.4)); box-shadow: 0 40px 120px rgba(0,0,0,.6), 0 0 80px rgba(139,92,246,.15); }
.frame .in { border-radius: 21px; background: linear-gradient(180deg, #0a0f1b, #070a12); overflow: hidden; }
.frame .bar { display: flex; align-items: center; gap: 7px; padding: 12px 16px; border-bottom: 1px solid var(--line); font: 600 12px var(--mono); color: var(--dim); }
.frame .bar i { width: 10px; height: 10px; border-radius: 50%; background: #2a3346; }
.frame .bar i:nth-child(1) { background: #ff5f57; } .frame .bar i:nth-child(2) { background: #febc2e; } .frame .bar i:nth-child(3) { background: #28c840; }
.frame .bar span { margin-left: 10px; }
.frame .bar .live { margin-left: auto; color: var(--green); display: flex; align-items: center; gap: 6px; }
.frame .bar .live::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 10px var(--green); animation: blink 1.6s infinite; }
@keyframes blink { 50% { opacity: .3; } }
.demo { display: grid; grid-template-columns: minmax(0, 1fr) 270px; min-height: 420px; }
.demo canvas { width: 100%; height: 100%; display: block; }
.demo .ladder { border-left: 1px solid var(--line); padding: 12px; display: flex; flex-direction: column; gap: 7px; }
.zrow { display: flex; align-items: center; gap: 8px; padding: 8px 10px; border-radius: 10px; background: rgba(20,27,44,.7); font: 600 12px var(--mono); }
.zrow .t { font: 800 10px Inter, sans-serif; padding: 2px 7px; border-radius: 5px; letter-spacing: .04em; }
.zrow .t.s { background: var(--red); color: #2a0507; } .zrow .t.b { background: var(--green); color: #032015; } .zrow .t.c { color: var(--red); border: 1px dashed var(--red); }
.zrow .d { margin-left: auto; color: var(--muted); }
.zrow.price { background: linear-gradient(90deg, rgba(240,195,90,.22), transparent); border: 1px solid rgba(240,195,90,.45); color: var(--gold); font-size: 14px; font-weight: 800; }
.illu { text-align: center; color: var(--dim); font-size: 12px; margin-top: 12px; }

/* --- sections --- */
section.s { padding: 100px 0 20px; }
.kicker { font: 800 12px var(--mono); letter-spacing: .22em; text-transform: uppercase; color: var(--ai1); text-align: center; }
h2 { font-size: clamp(28px, 4vw, 46px); line-height: 1.12; letter-spacing: -.03em; text-align: center; margin: 12px auto 14px; font-weight: 850; max-width: 20ch; }
html[lang="km"] h2 { letter-spacing: 0; line-height: 1.4; max-width: 760px; font-size: clamp(26px, 3.4vw, 40px); }
.sub { text-align: center; color: var(--muted); max-width: 640px; margin: 0 auto 50px; }
.grid3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.card { position: relative; border-radius: var(--r); padding: 26px; background: var(--panel); border: 1px solid var(--line); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); transition: transform .3s, border-color .3s, box-shadow .3s; overflow: hidden; }
.card::after { content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none; background: radial-gradient(400px circle at var(--mx, 50%) var(--my, 0%), rgba(139,92,246,.12), transparent 45%); opacity: 0; transition: opacity .3s; }
.card:hover { transform: translateY(-4px); border-color: rgba(139,92,246,.4); box-shadow: 0 20px 60px rgba(0,0,0,.4); }
.card:hover::after { opacity: 1; }
.ico { width: 48px; height: 48px; border-radius: 14px; display: grid; place-items: center; margin-bottom: 18px; background: linear-gradient(140deg, rgba(34,211,238,.2), rgba(139,92,246,.25)); border: 1px solid rgba(139,92,246,.35); box-shadow: 0 0 24px rgba(139,92,246,.2); }
.ico svg { width: 24px; height: 24px; stroke: #e6e9ff; fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.card h3 { margin: 0 0 8px; font-size: 19px; letter-spacing: -.01em; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; counter-reset: st; }
.step .n { font: 900 46px/1 var(--mono); letter-spacing: -.04em; margin-bottom: 10px; }
.split { display: grid; grid-template-columns: 1.05fr 1fr; gap: 50px; align-items: center; }
.split h2, .split .kicker, .split .sub { text-align: left; margin-left: 0; }
.ticks { list-style: none; padding: 0; margin: 22px 0 0; display: grid; gap: 12px; }
.ticks li { display: flex; gap: 12px; align-items: flex-start; color: var(--muted); }
.ticks li::before { content: "✓"; flex: none; width: 24px; height: 24px; border-radius: 8px; display: grid; place-items: center; font-weight: 900; font-size: 13px; color: #032015; background: linear-gradient(140deg, #5cf2b9, var(--green)); }
.ticks b { color: var(--text); }
.stat-panel { border-radius: var(--r); padding: 24px; background: var(--panel); border: 1px solid var(--line); }
.meter { margin: 14px 0 6px; height: 10px; border-radius: 6px; background: linear-gradient(90deg, var(--red), #f59e0b 35%, #64748b 50%, #14b8a6 65%, var(--green)); position: relative; }
.meter i { position: absolute; top: -5px; width: 4px; height: 20px; border-radius: 2px; background: #fff; box-shadow: 0 0 12px #fff; left: 30%; animation: sway 6s ease-in-out infinite; }
@keyframes sway { 50% { left: 62%; } }
.plans { display: grid; grid-template-columns: repeat(2, minmax(0, 340px)); gap: 22px; justify-content: center; }
.plan { padding: 30px 28px; display: flex; flex-direction: column; }
.plan .pname { font: 900 13px var(--mono); letter-spacing: .24em; color: var(--muted); }
.plan .price { margin: 10px 0 18px; color: var(--muted); }
.plan .price b { font: 900 48px/1 var(--mono); color: var(--text); letter-spacing: -.03em; }
.plan .feat { list-style: none; padding: 0; margin: 0 0 26px; display: grid; gap: 12px; flex: 1; }
.plan .feat li { display: flex; gap: 10px; color: var(--muted); font-size: 15px; }
.plan .feat li::before { flex: none; width: 22px; height: 22px; border-radius: 7px; display: grid; place-items: center; font: 900 12px/1 Inter, sans-serif; }
.plan .feat li.yes::before { content: "✓"; color: #032015; background: linear-gradient(140deg, #5cf2b9, var(--green)); }
.plan .feat li.no { opacity: .55; text-decoration: line-through; }
.plan .feat li.no::before { content: "✕"; color: var(--muted); background: rgba(148,163,184,.15); }
.plan .feat b { color: var(--text); }
.plan .btn { width: 100%; }
.plan.pro { border-color: rgba(240,195,90,.5); background: radial-gradient(ellipse at 50% 0%, rgba(240,195,90,.14), transparent 60%), var(--panel); box-shadow: 0 0 60px rgba(240,195,90,.12); }
.ribbon { position: absolute; top: 18px; right: 18px; font: 800 10.5px var(--mono); letter-spacing: .14em; padding: 4px 10px; border-radius: 999px; color: #1b1404; background: linear-gradient(180deg, #ffe08a, #e2ad3c); }
.faq { max-width: 820px; margin: 0 auto; display: grid; gap: 12px; }
.faq details { border-radius: 16px; background: var(--panel); border: 1px solid var(--line); padding: 4px 22px; }
.faq summary { cursor: pointer; list-style: none; padding: 16px 0; font-weight: 700; display: flex; justify-content: space-between; gap: 14px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--ai1); font: 700 20px/1 var(--mono); transition: transform .25s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin: 0 0 18px; color: var(--muted); }
.final { margin: 100px auto 0; text-align: center; border-radius: 28px; padding: 64px 26px; position: relative; overflow: hidden; background: radial-gradient(ellipse at 50% 0%, rgba(139,92,246,.35), transparent 60%), radial-gradient(ellipse at 50% 100%, rgba(240,195,90,.18), transparent 60%), var(--panel); border: 1px solid rgba(139,92,246,.35); }
.final h2 { margin-top: 0; }

/* --- legal / text pages --- */
.page { max-width: 820px; margin: 0 auto; padding: 70px 22px 20px; }
.page h1 { font-size: clamp(32px, 5vw, 52px); text-align: left; margin: 14px 0 8px; max-width: none; }
.page .upd { color: var(--dim); font: 600 13px var(--mono); }
.page h3 { margin: 36px 0 10px; font-size: 20px; }
.page p, .page li { color: var(--muted); }
.page li { margin: 6px 0; }
.page strong { color: var(--text); }
.note { border-radius: 16px; padding: 16px 20px; background: rgba(234,57,67,.08); border: 1px solid rgba(234,57,67,.35); color: #ffc9cd; margin: 22px 0; }

/* --- footer --- */
footer { margin-top: 110px; border-top: 1px solid var(--line); padding: 40px 0 46px; color: var(--dim); font-size: 14px; }
footer .wrap { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 30px; }
footer h4 { color: var(--text); margin: 0 0 12px; font-size: 14px; letter-spacing: .05em; }
footer a { display: block; padding: 3px 0; color: var(--muted); }
footer a:hover { color: var(--text); }
footer .copy { grid-column: 1 / -1; border-top: 1px solid var(--line); padding-top: 22px; margin-top: 10px; font-size: 12.5px; }

/* --- reveal on scroll --- */
.rv { opacity: 0; transform: translateY(24px); transition: opacity .8s ease, transform .8s ease; }
.rv.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .rv { opacity: 1; transform: none; } .blob, .grad, .meter i { animation: none; } }

/* --- responsive --- */
@media (max-width: 960px) {
  .links { display: none; position: absolute; top: 66px; left: 0; right: 0; flex-direction: column; padding: 12px 22px 18px; background: rgba(3,5,10,.96); border-bottom: 1px solid var(--line); }
  .links.open { display: flex; }
  .burger { display: block; }
  .grid3, .steps { grid-template-columns: 1fr 1fr; }
  .split { grid-template-columns: 1fr; }
  .demo { grid-template-columns: 1fr; }
  .demo .ladder { border-left: 0; border-top: 1px solid var(--line); }
  footer .wrap { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 620px) {
  .wrap { padding: 0 16px; }
  .nav .wrap { gap: 8px; }
  .nav .btn.sm.hide-m { display: none; }
  .logo { font-size: 12.5px; letter-spacing: .05em; gap: 8px; }
  .logo img { width: 30px; height: 30px; }
  .lang button { padding: 5px 7px; font-size: 11px; }
  .nav .btn.sm.gold { padding: 7px 10px; font-size: 12.5px; }
  .burger { width: 36px; }
  .hero { padding-top: 56px; }
  .grid3, .steps { grid-template-columns: 1fr; }
  .plans { grid-template-columns: 1fr; }
  .demo { min-height: 0; }
  .demo canvas { height: 300px; }
  .trust { gap: 18px; }
  footer .wrap { grid-template-columns: 1fr; }
  section.s { padding-top: 70px; }
}