/* ============================================================
   dcvteam · Number Guessing Machine
   "Lab Terminal / Phosphor" aesthetic
   David · Chloe · Victor
   ============================================================ */

:root{
  /* surfaces */
  --bg:        #05080a;
  --bg-2:      #080d11;
  --panel:     #0c141b;
  --panel-2:   #0f1a22;
  --line:      rgba(120,170,150,.14);
  --line-strong: rgba(120,200,170,.30);

  /* ink */
  --ink:   #e9f3ef;
  --muted: #7f95a0;
  --faint: #54666e;

  /* phosphor accents */
  --green:  #4dffb8;
  --green-d:#1fbb87;
  --amber:  #ffb454;
  --amber-d:#d98a2b;
  --cyan:   #6fe9ff;
  --pink:   #ff6b9d;

  /* LCD (matches the real blue HD44780 in the photo) */
  --lcd-bg:   #0c3f78;
  --lcd-cell: #0a3568;
  --lcd-text: #d8fff4;
  --lcd-glow: #7df0ff;
  --lcd-contrast: 1;       /* driven by the potentiometer knob */

  --maxw: 1180px;
  --radius: 14px;
  --mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  --display: "Chakra Petch", system-ui, sans-serif;
  --pixel: "VT323", monospace;
}

*{ box-sizing:border-box; margin:0; padding:0; }

html{ scroll-behavior:smooth; }

body{
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(77,255,184,.07), transparent 60%),
    radial-gradient(900px 500px at -10% 30%, rgba(255,180,84,.05), transparent 55%),
    var(--bg);
  color:var(--ink);
  font-family:var(--display);
  font-weight:400;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

/* circuit-board grid + noise texture overlay */
body::before{
  content:"";
  position:fixed; inset:0;
  background-image:
    linear-gradient(rgba(120,200,170,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120,200,170,.035) 1px, transparent 1px);
  background-size:46px 46px;
  mask-image:radial-gradient(circle at 50% 0%, #000 0%, transparent 75%);
  pointer-events:none; z-index:0;
}
body::after{
  content:"";
  position:fixed; inset:0;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.025'/%3E%3C/svg%3E");
  pointer-events:none; z-index:0; mix-blend-mode:overlay;
}

a{ color:inherit; text-decoration:none; }
.wrap{ width:min(var(--maxw), 92vw); margin-inline:auto; position:relative; z-index:1; }

/* ---------- selection & scrollbar ---------- */
::selection{ background:rgba(77,255,184,.25); color:#fff; }
::-webkit-scrollbar{ width:11px; height:11px; }
::-webkit-scrollbar-track{ background:var(--bg-2); }
::-webkit-scrollbar-thumb{ background:#1c2a30; border-radius:99px; border:2px solid var(--bg-2); }
::-webkit-scrollbar-thumb:hover{ background:#27393f; }

/* =====================  NAV  ===================== */
.nav{
  position:sticky; top:0; z-index:50;
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 0;
  backdrop-filter:blur(10px);
  background:linear-gradient(to bottom, rgba(5,8,10,.92), rgba(5,8,10,.55));
  border-bottom:1px solid var(--line);
}
.brand{ display:flex; align-items:center; gap:11px; font-weight:700; letter-spacing:.06em; }
.brand .dot{
  width:11px; height:11px; border-radius:50%;
  background:var(--green); box-shadow:0 0 14px var(--green);
  animation:pulse 2.4s ease-in-out infinite;
}
@keyframes pulse{ 0%,100%{ opacity:1; transform:scale(1);} 50%{ opacity:.45; transform:scale(.78);} }
.brand b{ font-size:1.05rem; }
.brand b span{ color:var(--green); }
.brand small{ color:var(--faint); font-family:var(--mono); font-size:.62rem; letter-spacing:.18em; }
.nav-links{ display:flex; gap:6px; }
.nav-links a{
  font-family:var(--mono); font-size:.74rem; letter-spacing:.05em;
  color:var(--muted); padding:7px 13px; border-radius:8px;
  transition:.18s; border:1px solid transparent;
}
.nav-links a:hover{ color:var(--green); border-color:var(--line-strong); background:rgba(77,255,184,.05); }

/* =====================  HERO  ===================== */
.hero{ padding:74px 0 56px; position:relative; }
.hero-grid{ display:grid; grid-template-columns:1.05fr .95fr; gap:54px; align-items:center; }

.eyebrow{
  display:inline-flex; align-items:center; gap:9px;
  font-family:var(--mono); font-size:.7rem; letter-spacing:.22em; text-transform:uppercase;
  color:var(--green); padding:6px 13px; border:1px solid var(--line-strong);
  border-radius:99px; background:rgba(77,255,184,.04); margin-bottom:24px;
}
.eyebrow::before{ content:"●"; color:var(--amber); font-size:.5rem; }

h1.title{
  font-family:var(--display); font-weight:700; font-size:clamp(2.6rem, 6vw, 4.6rem);
  line-height:.98; letter-spacing:-.01em; margin-bottom:20px;
}
h1.title .glow{
  color:var(--green);
  text-shadow:0 0 28px rgba(77,255,184,.55), 0 0 6px rgba(77,255,184,.4);
}
h1.title .cursor{ color:var(--amber); animation:blink 1.05s steps(1) infinite; }
@keyframes blink{ 50%{ opacity:0; } }

.lede{ color:var(--muted); font-size:1.06rem; max-width:46ch; margin-bottom:30px; }
.lede b{ color:var(--ink); font-weight:600; }

.hero-cta{ display:flex; gap:13px; flex-wrap:wrap; margin-bottom:34px; }
.btn{
  font-family:var(--mono); font-size:.82rem; letter-spacing:.04em; font-weight:500;
  padding:13px 22px; border-radius:10px; cursor:pointer; transition:.2s;
  display:inline-flex; align-items:center; gap:9px; border:1px solid transparent;
}
.btn-primary{ background:var(--green); color:#04130d; font-weight:700; box-shadow:0 8px 30px -8px rgba(77,255,184,.5); }
.btn-primary:hover{ transform:translateY(-2px); box-shadow:0 14px 40px -8px rgba(77,255,184,.65); }
.btn-ghost{ border-color:var(--line-strong); color:var(--ink); background:rgba(255,255,255,.02); }
.btn-ghost:hover{ border-color:var(--green); color:var(--green); }

.team-chips{ display:flex; gap:10px; flex-wrap:wrap; }
.chip{
  display:flex; align-items:center; gap:9px; font-family:var(--mono); font-size:.8rem;
  padding:7px 13px 7px 8px; border:1px solid var(--line); border-radius:99px; background:var(--panel);
}
.chip .av{
  width:25px; height:25px; border-radius:50%; display:grid; place-items:center;
  font-weight:700; font-size:.72rem; color:#04130d;
}
.chip:nth-child(1) .av{ background:var(--green); }
.chip:nth-child(2) .av{ background:var(--amber); }
.chip:nth-child(3) .av{ background:var(--cyan); }

/* ---------- HERO DEVICE (interactive LCD rig) ---------- */
.device{
  background:linear-gradient(160deg, #0e1820, #0a1117);
  border:1px solid var(--line-strong); border-radius:22px; padding:26px;
  box-shadow:0 40px 80px -30px rgba(0,0,0,.8), inset 0 1px 0 rgba(255,255,255,.04);
  position:relative;
}
.device::before{
  content:"DCV-01 · GUESS UNIT"; position:absolute; top:13px; right:18px;
  font-family:var(--mono); font-size:.56rem; letter-spacing:.2em; color:var(--faint);
}
.device-rail{ display:flex; gap:6px; margin-bottom:18px; }
.device-rail i{ width:7px; height:7px; border-radius:50%; background:#1e2c33; display:block; }
.device-rail i:nth-child(1){ background:var(--pink); box-shadow:0 0 8px var(--pink); }
.device-rail i:nth-child(2){ background:var(--amber); box-shadow:0 0 8px var(--amber); }
.device-rail i:nth-child(3){ background:var(--green); box-shadow:0 0 8px var(--green); }

/* the 16x2 LCD */
.lcd{
  background:
    linear-gradient(180deg, rgba(255,255,255,.05), transparent 40%),
    var(--lcd-bg);
  border-radius:8px; padding:16px 14px;
  border:3px solid #07243f;
  box-shadow:inset 0 0 30px rgba(0,0,0,.55), 0 2px 0 rgba(255,255,255,.05);
  position:relative; overflow:hidden;
  filter:brightness(calc(.45 + var(--lcd-contrast) * .8)) saturate(calc(.6 + var(--lcd-contrast)*.7));
}
.lcd::after{ /* scanlines */
  content:""; position:absolute; inset:0; pointer-events:none;
  background:repeating-linear-gradient(transparent 0 2px, rgba(0,0,0,.10) 2px 3px);
}
.lcd-line{
  font-family:var(--pixel); font-size:1.85rem; line-height:1.1; letter-spacing:.04em;
  color:var(--lcd-text); text-shadow:0 0 7px var(--lcd-glow); white-space:pre; height:1.25em;
}
.lcd-line .car{ background:var(--lcd-text); color:var(--lcd-bg); animation:blink 1s steps(1) infinite; }

/* control deck below LCD: potentiometer + IR up/down */
.deck{ display:grid; grid-template-columns:auto 1fr auto; gap:18px; align-items:center; margin-top:20px; }

.pot{ text-align:center; user-select:none; }
.knob{
  width:62px; height:62px; border-radius:50%; margin:0 auto 7px;
  background:radial-gradient(circle at 35% 30%, #2a3a42, #0c1419 70%);
  border:1px solid var(--line-strong); position:relative; cursor:grab;
  box-shadow:0 6px 18px -6px #000, inset 0 0 12px rgba(0,0,0,.6);
}
.knob:active{ cursor:grabbing; }
.knob::after{ /* indicator */
  content:""; position:absolute; left:50%; top:8px; width:3px; height:18px;
  background:var(--amber); border-radius:2px; transform-origin:50% 23px;
  box-shadow:0 0 8px var(--amber); transform:translateX(-50%) rotate(var(--rot,-130deg));
}
.tick{ font-family:var(--mono); font-size:.58rem; letter-spacing:.14em; color:var(--faint); }

.deck-label{ font-family:var(--mono); font-size:.62rem; letter-spacing:.18em; color:var(--faint); text-align:center; }
.deck-label b{ color:var(--muted); display:block; margin-top:3px; font-size:.7rem; }

.ir{ display:flex; flex-direction:column; gap:8px; align-items:center; }
.ir small{ font-family:var(--mono); font-size:.55rem; letter-spacing:.15em; color:var(--faint); }
.ir-btns{ display:flex; flex-direction:column; gap:7px; }
.ir-btn{
  width:46px; height:38px; border-radius:9px; cursor:pointer; transition:.15s;
  background:#11181e; border:1px solid var(--line-strong); color:var(--cyan);
  font-size:1rem; display:grid; place-items:center;
}
.ir-btn:hover{ background:rgba(111,233,255,.1); }
.ir-btn:active{ transform:scale(.9); box-shadow:0 0 16px rgba(111,233,255,.5); }

.device-hint{ font-family:var(--mono); font-size:.62rem; color:var(--faint); text-align:center; margin-top:16px; }
.device-hint span{ color:var(--green); }

/* =====================  SECTION SCAFFOLD  ===================== */
section{ padding:64px 0; position:relative; }
.sec-head{ margin-bottom:42px; max-width:62ch; }
.sec-tag{
  font-family:var(--mono); font-size:.7rem; letter-spacing:.22em; text-transform:uppercase;
  color:var(--amber); display:flex; align-items:center; gap:12px; margin-bottom:14px;
}
.sec-tag::before{ content:""; width:30px; height:1px; background:var(--amber); }
h2{ font-family:var(--display); font-weight:700; font-size:clamp(1.8rem,3.4vw,2.7rem); letter-spacing:-.01em; line-height:1.08; }
.sec-head p{ color:var(--muted); margin-top:14px; font-size:1.02rem; }

/* =====================  OVERVIEW / SPECS  ===================== */
.specs{ display:grid; grid-template-columns:repeat(4,1fr); gap:16px; }
.spec{
  background:var(--panel); border:1px solid var(--line); border-radius:var(--radius);
  padding:22px; transition:.25s; position:relative; overflow:hidden;
}
.spec:hover{ border-color:var(--line-strong); transform:translateY(-3px); background:var(--panel-2); }
.spec .ico{ font-size:1.5rem; margin-bottom:14px; filter:drop-shadow(0 0 10px currentColor); }
.spec:nth-child(4n+1) .ico{ color:var(--green); }
.spec:nth-child(4n+2) .ico{ color:var(--amber); }
.spec:nth-child(4n+3) .ico{ color:var(--cyan); }
.spec:nth-child(4n+4) .ico{ color:var(--pink); }
.spec h3{ font-size:1rem; margin-bottom:6px; font-weight:600; }
.spec p{ color:var(--muted); font-size:.85rem; line-height:1.5; }
.spec .pin{
  position:absolute; top:16px; right:16px; font-family:var(--mono);
  font-size:.6rem; color:var(--faint); border:1px solid var(--line); border-radius:6px; padding:2px 7px;
}

/* =====================  CIRCUIT PREVIEW  ===================== */
.circuit-grid{ display:grid; grid-template-columns:1.6fr 1fr; gap:34px; align-items:start; }
.frame{
  background:var(--panel); border:1px solid var(--line-strong); border-radius:16px; padding:14px;
  box-shadow:0 30px 60px -28px rgba(0,0,0,.7); position:relative;
}
.frame-bar{ display:flex; align-items:center; justify-content:space-between; padding:4px 6px 12px; }
.frame-bar .f-title{ font-family:var(--mono); font-size:.66rem; letter-spacing:.14em; color:var(--muted); }
.frame-bar .f-dots{ display:flex; gap:6px; }
.frame-bar .f-dots i{ width:9px; height:9px; border-radius:50%; background:#243238; display:block; }
.frame img{
  width:100%; display:block; border-radius:10px; cursor:zoom-in;
  border:1px solid var(--line); transition:.3s;
}
.frame img:hover{ filter:brightness(1.06); }
.frame .zoom-tip{
  position:absolute; bottom:24px; right:26px; font-family:var(--mono); font-size:.6rem;
  color:var(--ink); background:rgba(5,8,10,.78); padding:5px 10px; border-radius:7px;
  border:1px solid var(--line-strong); pointer-events:none;
}

.legend{ display:flex; flex-direction:column; gap:11px; }
.leg{
  display:flex; gap:13px; align-items:flex-start; padding:13px 15px;
  background:var(--panel); border:1px solid var(--line); border-radius:11px; transition:.2s;
}
.leg:hover{ border-color:var(--line-strong); transform:translateX(4px); }
.leg .sw{ width:13px; height:13px; border-radius:3px; margin-top:5px; flex:0 0 auto; box-shadow:0 0 8px currentColor; }
.leg h4{ font-size:.9rem; font-weight:600; }
.leg p{ font-size:.76rem; color:var(--muted); font-family:var(--mono); }

/* lightbox */
.lightbox{
  position:fixed; inset:0; z-index:200; background:rgba(3,5,7,.94);
  display:none; padding:4vh 4vw; cursor:zoom-out;
  backdrop-filter:blur(6px); overflow:auto; text-align:center;
}
.lightbox.on{ display:block; animation:fade .25s ease; }
.lightbox img{
  max-width:min(960px,96vw); width:auto; height:auto; border-radius:12px;
  border:1px solid var(--line-strong); margin:auto;
}
@keyframes fade{ from{ opacity:0; } }

/* =====================  HOW IT WORKS / FEATURES  ===================== */
.flow{ display:grid; grid-template-columns:repeat(4,1fr); gap:14px; margin-bottom:40px; }
.step{
  background:var(--panel); border:1px solid var(--line); border-radius:var(--radius);
  padding:20px; position:relative;
}
.step .n{
  font-family:var(--mono); font-size:.7rem; color:var(--green);
  border:1px solid var(--line-strong); border-radius:7px; padding:3px 9px; display:inline-block; margin-bottom:13px;
}
.step h3{ font-size:.98rem; margin-bottom:6px; }
.step p{ color:var(--muted); font-size:.82rem; line-height:1.5; }
.step::after{
  content:"→"; position:absolute; right:-12px; top:50%; transform:translateY(-50%);
  color:var(--faint); font-size:1rem; z-index:2;
}
.flow .step:last-child::after{ display:none; }

.diff{ display:grid; grid-template-columns:repeat(4,1fr); gap:14px; margin-top:8px; }
.dcard{
  border:1px solid var(--line); border-radius:var(--radius); padding:20px; text-align:center;
  background:var(--panel); transition:.25s; position:relative; overflow:hidden;
}
.dcard:hover{ transform:translateY(-4px); border-color:var(--line-strong); }
.dcard .key{
  width:38px; height:38px; border-radius:9px; display:grid; place-items:center; margin:0 auto 12px;
  font-family:var(--mono); font-weight:700; font-size:1.1rem; color:#04130d;
}
.dcard:nth-child(1) .key{ background:var(--green); }
.dcard:nth-child(2) .key{ background:var(--cyan); }
.dcard:nth-child(3) .key{ background:var(--amber); }
.dcard:nth-child(4) .key{ background:var(--pink); }
.dcard h4{ font-size:.95rem; }
.dcard .range{ font-family:var(--mono); font-size:.8rem; color:var(--muted); margin-top:5px; }

.secrets{ display:grid; grid-template-columns:1fr 1fr; gap:18px; margin-top:30px; }
.secret{
  border-radius:16px; padding:26px; position:relative; overflow:hidden;
  border:1px solid var(--line-strong);
}
.secret.impossible{ background:linear-gradient(150deg, rgba(255,107,157,.10), rgba(12,20,27,.6)); }
.secret.backrooms{ background:linear-gradient(150deg, rgba(255,180,84,.12), rgba(12,20,27,.6)); }
.secret .badge{
  font-family:var(--mono); font-size:.62rem; letter-spacing:.2em; text-transform:uppercase;
  padding:4px 11px; border-radius:99px; display:inline-block; margin-bottom:14px;
}
.secret.impossible .badge{ background:rgba(255,107,157,.18); color:var(--pink); }
.secret.backrooms .badge{ background:rgba(255,180,84,.18); color:var(--amber); }
.secret h3{ font-size:1.3rem; margin-bottom:8px; font-family:var(--pixel); letter-spacing:.04em; }
.secret p{ color:var(--muted); font-size:.88rem; }
.secret .odds{ font-family:var(--mono); font-size:.72rem; color:var(--ink); margin-top:14px; }
.secret .odds b{ color:var(--green); }

/* =====================  CODE  ===================== */
.code-toolbar{
  display:flex; align-items:center; justify-content:space-between;
  background:var(--panel-2); border:1px solid var(--line-strong); border-bottom:none;
  border-radius:14px 14px 0 0; padding:11px 16px;
}
.code-toolbar .fname{ font-family:var(--mono); font-size:.74rem; color:var(--muted); display:flex; align-items:center; gap:9px; }
.code-toolbar .fname .lang{ color:var(--green); border:1px solid var(--line-strong); border-radius:6px; padding:1px 8px; font-size:.62rem; }
.code-actions{ display:flex; gap:8px; }
.cbtn{
  font-family:var(--mono); font-size:.68rem; color:var(--muted); cursor:pointer;
  border:1px solid var(--line); border-radius:7px; padding:5px 11px; background:transparent; transition:.18s;
}
.cbtn:hover{ color:var(--green); border-color:var(--line-strong); }
.cbtn.copied{ color:var(--green); border-color:var(--green); }

.cbtn.active{ color:var(--green); border-color:var(--green); background:rgba(77,255,184,.06); }

/* code image (beautiful screenshot) view */
.code-img-wrap{
  position:relative; max-height:620px; overflow:auto;
  background:#0c0f12; border:1px solid var(--line-strong); border-radius:0 0 14px 14px;
}
.code-img-wrap img{ width:100%; display:block; cursor:zoom-in; }
.code-img-wrap .zoom-tip{
  position:sticky; bottom:14px; left:100%; float:right; margin:14px;
  font-family:var(--mono); font-size:.6rem; color:var(--ink);
  background:rgba(5,8,10,.82); padding:6px 11px; border-radius:7px;
  border:1px solid var(--line-strong); pointer-events:none; white-space:nowrap;
}

.code-wrap{
  position:relative; max-height:560px; overflow:auto;
  background:#070d11; border:1px solid var(--line-strong); border-radius:0 0 14px 14px;
}
.code-wrap.expanded{ max-height:none; }
pre.code{ margin:0; padding:20px 20px 20px 0; font-family:var(--mono); font-size:.8rem; line-height:1.7; }
pre.code code{ display:block; }
.ln{ display:flex; }
.ln .num{
  flex:0 0 auto; width:48px; text-align:right; padding-right:16px; color:#33474f;
  user-select:none; position:sticky; left:0; background:#070d11;
}
.ln .txt{ white-space:pre; }
.ln:hover{ background:rgba(77,255,184,.035); }

/* syntax tokens */
.tok-kw{ color:var(--pink); }
.tok-type{ color:var(--cyan); }
.tok-fn{ color:var(--green); }
.tok-num{ color:var(--amber); }
.tok-str{ color:#ffe08a; }
.tok-com{ color:#4a5d64; font-style:italic; }
.tok-pre{ color:#9a8cff; }
.tok-punc{ color:#7f95a0; }

.fade-bottom{
  position:sticky; bottom:0; height:60px; margin-top:-60px;
  background:linear-gradient(transparent, #070d11);
  pointer-events:none; display:block;
}
.code-wrap.expanded .fade-bottom{ display:none; }

/* =====================  FUNCTIONS  ===================== */
.fns{ display:grid; grid-template-columns:repeat(2,1fr); gap:16px; }
.fn{
  background:var(--panel); border:1px solid var(--line); border-radius:var(--radius);
  padding:22px; transition:.22s;
}
.fn:hover{ border-color:var(--line-strong); background:var(--panel-2); }
.fn .sig{
  font-family:var(--mono); font-size:.84rem; margin-bottom:11px; color:var(--green);
  display:flex; align-items:baseline; gap:0; flex-wrap:wrap;
}
.fn .sig .ret{ color:var(--cyan); margin-right:8px; }
.fn .sig .args{ color:var(--muted); }
.fn p{ color:var(--muted); font-size:.86rem; line-height:1.55; }
.fn .tags{ display:flex; gap:7px; margin-top:13px; flex-wrap:wrap; }
.fn .t{ font-family:var(--mono); font-size:.6rem; color:var(--faint); border:1px solid var(--line); border-radius:99px; padding:2px 9px; }

/* =====================  TEAM  ===================== */
.team{ display:grid; grid-template-columns:repeat(3,1fr); gap:18px; }
.member{
  text-align:center; padding:32px 22px; border-radius:16px;
  background:var(--panel); border:1px solid var(--line); transition:.28s; position:relative; overflow:hidden;
}
.member:hover{ transform:translateY(-5px); border-color:var(--line-strong); }
.member .ring{
  width:78px; height:78px; border-radius:50%; margin:0 auto 18px; display:grid; place-items:center;
  font-family:var(--display); font-weight:700; font-size:1.9rem; color:#04130d; position:relative;
}
.member:nth-child(1) .ring{ background:var(--green); box-shadow:0 0 30px -6px var(--green); }
.member:nth-child(2) .ring{ background:var(--amber); box-shadow:0 0 30px -6px var(--amber); }
.member:nth-child(3) .ring{ background:var(--cyan); box-shadow:0 0 30px -6px var(--cyan); }
.member h3{ font-size:1.2rem; }
.member .role{ font-family:var(--mono); font-size:.72rem; color:var(--muted); margin-top:5px; letter-spacing:.08em; }

/* =====================  FOOTER  ===================== */
footer{
  border-top:1px solid var(--line); padding:42px 0 60px; margin-top:30px;
  text-align:center;
}
footer .f-brand{ font-family:var(--display); font-weight:700; font-size:1.4rem; letter-spacing:.04em; }
footer .f-brand span{ color:var(--green); }
footer p{ color:var(--faint); font-family:var(--mono); font-size:.72rem; margin-top:10px; letter-spacing:.06em; }

/* =====================  REVEAL ANIM  ===================== */
.reveal{ opacity:0; transform:translateY(26px); transition:opacity .7s ease, transform .7s cubic-bezier(.2,.8,.2,1); }
.reveal.in{ opacity:1; transform:none; }
.reveal.d1{ transition-delay:.08s; } .reveal.d2{ transition-delay:.16s; }
.reveal.d3{ transition-delay:.24s; } .reveal.d4{ transition-delay:.32s; }

/* =====================  RESPONSIVE  ===================== */
@media (max-width: 940px){
  .hero-grid{ grid-template-columns:1fr; gap:40px; }
  .specs{ grid-template-columns:repeat(2,1fr); }
  .circuit-grid{ grid-template-columns:1fr; }
  .flow{ grid-template-columns:repeat(2,1fr); }
  .flow .step:nth-child(2)::after{ display:none; }
  .diff{ grid-template-columns:repeat(2,1fr); }
  .secrets{ grid-template-columns:1fr; }
  .fns{ grid-template-columns:1fr; }
  .team{ grid-template-columns:1fr; }
  .nav-links{ display:none; }
}
@media (max-width: 520px){
  .specs, .flow, .diff{ grid-template-columns:1fr; }
  .step::after{ display:none; }
  .lcd-line{ font-size:1.45rem; }
  .deck{ grid-template-columns:1fr; gap:22px; justify-items:center; }
}

@media (prefers-reduced-motion: reduce){
  *{ animation:none !important; transition:none !important; }
  .reveal{ opacity:1; transform:none; }
}