/* ===========================================================
   Build with Jun — shared stylesheet
   Visual system: black + gold + electric violet, tech-forward.
   Single file, zero external CSS deps (only Google Fonts link).
   =========================================================== */
:root{
  --bg:#060608; --bg2:#0d0d12; --card:#111118; --line:#26262f;
  --gold:#E9C56A; --gold2:#F7E3A1; --violet:#7C5CFF; --cyan:#36E0FF;
  --text:#EEEEF2; --muted:#9A9AA8; --maxw:1120px}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg); color:var(--text); font-family:"Inter",system-ui,sans-serif;
  line-height:1.6; overflow-x:hidden; -webkit-font-smoothing:antialiased}
h1,h2,h3,h4,.display{,sans-serif}
a{color:inherit;text-decoration:none}
img{max-width:100%}
::selection{background:var(--gold);color:#000}

/* ---------- global fx layers ---------- */
.grain{position:fixed;inset:0;z-index:60;pointer-events:none;opacity:.05;
  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='0.8' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
#particles{position:fixed;inset:0;z-index:0;pointer-events:none}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px;position:relative;z-index:2}
.gold{color:var(--gold)}
main{position:relative;z-index:2}

/* ---------- buttons ---------- */
.btn{position:relative;display:inline-flex;align-items:center;gap:8px;
  font-weight:600;font-size:15px;border-radius:999px;padding:15px 30px;cursor:pointer;border:0;overflow:hidden;
  transition:transform .2s,box-shadow .2s}
.btn-primary{background:linear-gradient(120deg,var(--gold),var(--gold2));color:#1a1405;box-shadow:0 8px 30px rgba(233,197,106,.30)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 14px 44px rgba(233,197,106,.55)}
.btn-ghost{background:rgba(255,255,255,.03);color:var(--text);border:1px solid var(--line);backdrop-filter:blur(4px)}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold);transform:translateY(-3px)}
.btn .sheen{position:absolute;top:0;left:-120%;width:60%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.55),transparent);transform:skewX(-20deg)}
.btn-primary:hover .sheen{animation:sheen .8s}
@keyframes sheen{to{left:160%}}

/* ---------- nav (injected by shell.js) ---------- */
header.nav{position:fixed;top:0;left:0;right:0;z-index:50;transition:background .3s,border-color .3s;
  border-bottom:1px solid transparent}
header.nav.scrolled{background:rgba(6,6,8,.72);backdrop-filter:blur(14px);border-color:var(--line)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{font-weight:700;font-size:18px;letter-spacing:.02em;display:flex;align-items:center;gap:8px}
.brand .mark{width:26px;height:26px;border-radius:7px;background:conic-gradient(from 200deg,var(--gold),var(--violet),var(--gold));
  box-shadow:0 0 18px rgba(233,197,106,.5);animation:spin 9s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.nav-links{display:flex;gap:30px;align-items:center}
.nav-links a{color:var(--muted);font-size:14px;font-weight:500;transition:color .2s;position:relative}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:2px;background:var(--gold);transition:width .25s}
.nav-links a:hover{color:var(--text)} .nav-links a:hover::after{width:100%}
.nav-links a.active{color:var(--text)}
.nav-links a.active::after{width:100%}
.nav-cta{padding:10px 20px;font-size:14px}
.nav-toggle{display:none;background:none;border:1px solid var(--line);border-radius:10px;width:42px;height:38px;cursor:pointer;color:var(--text)}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);margin:3px auto;transition:.3s}

/* ---------- hero ---------- */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;padding:120px 0 80px}
.hero .glow{position:absolute;z-index:1;filter:blur(70px);opacity:.55;pointer-events:none}
.glow.g1{top:-10%;left:8%;width:420px;height:420px;background:radial-gradient(circle,var(--gold),transparent 70%)}
.glow.g2{top:20%;right:2%;width:480px;height:480px;background:radial-gradient(circle,var(--violet),transparent 70%);opacity:.4}
.hero-in{position:relative;z-index:2;max-width:860px}
.badge{display:inline-flex;align-items:center;gap:9px;font-size:12.5px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--gold);border:1px solid rgba(233,197,106,.35);padding:8px 16px;border-radius:999px;margin-bottom:26px;
  background:rgba(233,197,106,.05)}
.badge .dot{width:7px;height:7px;border-radius:50%;background:var(--gold);box-shadow:0 0 10px var(--gold);animation:pulse 1.8s infinite}
@keyframes pulse{50%{opacity:.35}}
.hero h1{font-size:clamp(40px,7vw,84px);line-height:1.02;font-weight:700;letter-spacing:-.03em;margin-bottom:22px}
.hero h1 .grad{background:linear-gradient(110deg,var(--gold2),var(--gold) 40%,var(--violet));-webkit-background-clip:text;background-clip:text;color:transparent;
  filter:drop-shadow(0 4px 30px rgba(233,197,106,.25))}
.rot{display:inline-block;color:var(--cyan);text-shadow:0 0 24px rgba(54,224,255,.55);min-width:6ch}
.hero p.lead{font-size:clamp(16px,2.2vw,20px);color:#c4c4cf;max-width:620px;margin:0 0 36px}
.cta-row{display:flex;gap:16px;flex-wrap:wrap}
.hero-note{margin-top:18px;font-size:13px;color:var(--muted)}

.stats{display:flex;gap:40px;flex-wrap:wrap;margin-top:60px;position:relative;z-index:2}
.stat b{display:block;font-size:34px;font-weight:700;color:var(--gold);line-height:1}
.stat span{font-size:12.5px;color:var(--muted);letter-spacing:.05em}
.scroll-ind{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);z-index:2;color:var(--muted);
  font-size:11px;letter-spacing:.2em;text-transform:uppercase;display:flex;flex-direction:column;align-items:center;gap:8px}
.scroll-ind .mouse{width:22px;height:36px;border:1.5px solid var(--muted);border-radius:12px;position:relative}
.scroll-ind .mouse::after{content:"";position:absolute;top:7px;left:50%;transform:translateX(-50%);width:3px;height:7px;
  background:var(--gold);border-radius:2px;animation:scrolly 1.6s infinite}
@keyframes scrolly{0%{opacity:0;top:7px}40%{opacity:1}100%{opacity:0;top:18px}}

/* ---------- marquee ---------- */
.marquee{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:18px 0;overflow:hidden;background:var(--bg2);position:relative;z-index:2}
.marquee-track{display:flex;gap:48px;white-space:nowrap;width:max-content;animation:marq 26s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
.marquee span{font-weight:600;font-size:16px;color:var(--muted);display:inline-flex;align-items:center;gap:48px}
.marquee span i{color:var(--gold);font-style:normal}
@keyframes marq{to{transform:translateX(-50%)}}

/* ---------- generic section ---------- */
section{position:relative;z-index:2;padding:110px 0}
.sec-head{max-width:720px;margin:0 auto 56px;text-align:center}
.kicker{font-size:13px;letter-spacing:.22em;text-transform:uppercase;color:var(--gold);margin-bottom:14px}
.sec-head h2{font-size:clamp(28px,4.5vw,48px);font-weight:700;letter-spacing:-.02em;line-height:1.08}
.sec-head p{color:var(--muted);font-size:16.5px;margin-top:14px}

/* cards */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px}
.card{position:relative;background:linear-gradient(160deg,var(--card),#0c0c11);border:1px solid var(--line);
  border-radius:18px;padding:26px;overflow:hidden;transition:transform .35s cubic-bezier(.2,.7,.2,1),border-color .35s}
.card::before{content:"";position:absolute;inset:0;border-radius:18px;padding:1px;opacity:0;transition:opacity .35s;
  background:linear-gradient(130deg,var(--gold),transparent 45%,var(--violet));-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude}
.card:hover{transform:translateY(-6px)}
.card:hover::before{opacity:1}
.card .ico{font-size:30px;margin-bottom:14px;display:inline-block;filter:drop-shadow(0 0 12px rgba(233,197,106,.4))}
.card h3{font-size:18px;font-weight:600;margin-bottom:8px}
.card p{font-size:14px;color:var(--muted)}
.card .idx{position:absolute;top:18px;right:22px;font-size:13px;color:var(--line);font-weight:700}

/* why */
.why{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:22px}
.why .v{background:var(--bg2);border:1px solid var(--line);border-radius:18px;padding:34px 30px;position:relative;overflow:hidden}
.why .v .num{font-size:64px;font-weight:700;line-height:1;
  background:linear-gradient(120deg,var(--gold),var(--violet));-webkit-background-clip:text;background-clip:text;color:transparent;opacity:.9}
.why .v h4{font-size:19px;margin:14px 0 10px;font-weight:600}
.why .v p{color:var(--muted);font-size:14.5px}

/* showcase terminal */
.showcase{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.term{background:#0a0a0f;border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:0 30px 80px rgba(0,0,0,.5)}
.term .bar{display:flex;gap:8px;padding:14px 16px;border-bottom:1px solid var(--line);background:#08080c}
.term .bar i{width:11px;height:11px;border-radius:50%;display:block}
.term .bar i:nth-child(1){background:#ff5f56}.term .bar i:nth-child(2){background:#ffbd2e}.term .bar i:nth-child(3){background:#27c93f}
.term .bar span{margin-left:10px;color:var(--muted);font-size:12px}
.term pre{padding:22px;font-family:"Consolas",monospace;font-size:13px;line-height:1.75;color:#c9c9d4;overflow-x:auto}
.term .c-gold{color:var(--gold)} .term .c-vio{color:var(--violet)} .term .c-cy{color:var(--cyan)} .term .c-mut{color:#6b6b78}
.showcase h3{font-size:clamp(24px,3.4vw,36px);font-weight:700;letter-spacing:-.02em;line-height:1.1;margin-bottom:16px}
.showcase p{color:var(--muted);margin-bottom:14px}
.chk{display:flex;gap:12px;align-items:flex-start;margin:12px 0;font-size:15px}
.chk .tick{flex:none;width:24px;height:24px;border-radius:7px;background:linear-gradient(120deg,var(--gold),var(--gold2));
  color:#1a1405;display:grid;place-items:center;font-weight:700;font-size:13px;box-shadow:0 0 16px rgba(233,197,106,.4)}

/* FAQ */
details{border:1px solid var(--line);border-radius:14px;padding:0 22px;margin-bottom:13px;background:var(--card);transition:border-color .2s}
details[open]{border-color:var(--gold)}
summary{cursor:pointer;font-weight:600;padding:20px 0;list-style:none;display:flex;justify-content:space-between;align-items:center}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--gold);font-size:24px;font-weight:700;transition:transform .2s}
details[open] summary::after{transform:rotate(45deg)}
details p{padding:0 0 20px;color:var(--muted);font-size:14.5px}

/* final cta */
.cta-band{text-align:center;position:relative;overflow:hidden}
.cta-band .glow{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:600px;height:400px;
  background:radial-gradient(circle,var(--gold),transparent 65%);filter:blur(90px);opacity:.25;pointer-events:none}
.cta-band h2{font-size:clamp(30px,5vw,56px);font-weight:700;letter-spacing:-.02em;margin-bottom:16px;line-height:1.05}
.cta-band p{color:var(--muted);font-size:17px;margin-bottom:32px}

footer{border-top:1px solid var(--line);padding:40px 0;color:var(--muted);font-size:13.5px;position:relative;z-index:2}
.foot-in{display:flex;justify-content:space-between;flex-wrap:wrap;gap:16px;align-items:center}
footer a{color:var(--gold)}

/* ---------- about jun ---------- */
.about-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;align-items:center}
.about-id{background:linear-gradient(160deg,var(--card),#0c0c11);border:1px solid var(--line);border-radius:22px;padding:38px 32px;text-align:center;position:relative;overflow:hidden}
.about-id::before{content:"";position:absolute;inset:0;border-radius:22px;padding:1px;opacity:.6;background:linear-gradient(130deg,var(--gold),transparent 50%,var(--violet));-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude}
.avatar{width:110px;height:110px;border-radius:50%;margin:0 auto 22px;position:relative;display:grid;place-items:center;background:radial-gradient(circle at 30% 30%,#1c1c26,#0a0a0f);border:1px solid var(--line)}
.avatar .avatar-mark{width:54px;height:54px;border-radius:14px;background:conic-gradient(from 200deg,var(--gold),var(--violet),var(--gold));box-shadow:0 0 26px rgba(233,197,106,.55);animation:spin 9s linear infinite}
.avatar-ring{position:absolute;inset:-6px;border-radius:50%;border:1px dashed rgba(233,197,106,.3);animation:spin 22s linear infinite reverse}
.about-name{font-size:30px;font-weight:700;letter-spacing:.01em}
.about-role{color:var(--muted);font-size:14.5px;margin:6px 0 18px}
.tags{display:flex;flex-wrap:wrap;gap:9px;justify-content:center;margin-bottom:18px}
.tag{font-size:12px;font-weight:600;color:var(--gold);border:1px solid rgba(233,197,106,.35);padding:6px 13px;border-radius:999px;background:rgba(233,197,106,.05)}
.about-loc{font-size:13px;color:var(--muted)}
.about-body h2{font-size:clamp(26px,4vw,44px);font-weight:700;letter-spacing:-.02em;line-height:1.08;margin-bottom:18px}
.about-lead{color:#c4c4cf;font-size:16.5px;margin-bottom:14px}
.about-body p{color:var(--muted);font-size:15px;margin-bottom:14px}
.about-points{margin-top:22px;display:flex;flex-direction:column;gap:14px}
.ap{display:flex;gap:12px;align-items:flex-start;font-size:14.5px;color:var(--muted)}
.ap b{color:var(--text);font-weight:600}
.ap .tick{flex:none;width:24px;height:24px;border-radius:7px;background:linear-gradient(120deg,var(--gold),var(--gold2));color:#1a1405;display:grid;place-items:center;font-weight:700;font-size:13px;box-shadow:0 0 16px rgba(233,197,106,.4)}

/* ---------- inner page hero (about / stack / contact) ---------- */
.page-hero{position:relative;padding:150px 0 60px;text-align:center}
.page-hero .kicker{margin-bottom:12px}
.page-hero h1{font-size:clamp(34px,6vw,64px);font-weight:700;letter-spacing:-.03em;line-height:1.04}
.page-hero h1 .grad{background:linear-gradient(110deg,var(--gold2),var(--gold) 40%,var(--violet));-webkit-background-clip:text;background-clip:text;color:transparent}
.page-hero p{color:var(--muted);max-width:560px;margin:16px auto 0;font-size:16.5px}
.breadcrumb{font-size:12.5px;color:var(--muted);letter-spacing:.04em;margin-bottom:18px}
.breadcrumb a{color:var(--gold)}

/* ---------- stack page: filter ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin:0 auto 40px;max-width:880px}
.filter-bar button{font-weight:600;font-size:13.5px;color:var(--muted);
  background:rgba(255,255,255,.03);border:1px solid var(--line);border-radius:999px;padding:9px 18px;cursor:pointer;transition:.2s}
.filter-bar button:hover{color:var(--text);border-color:var(--gold)}
.filter-bar button.active{background:linear-gradient(120deg,var(--gold),var(--gold2));color:#1a1405;border-color:transparent}
.stack-cat{margin-bottom:54px;scroll-margin-top:90px}
.stack-cat h3{font-size:22px;font-weight:700;margin-bottom:6px;display:flex;align-items:center;gap:10px}
.stack-cat h3 .dot{width:10px;height:10px;border-radius:50%;background:var(--gold);box-shadow:0 0 12px var(--gold)}
.stack-cat .sub{color:var(--muted);font-size:14px;margin-bottom:22px}
.tool-row{display:grid;grid-template-columns:200px 1fr auto;gap:18px;align-items:center;
  background:linear-gradient(160deg,var(--card),#0c0c11);border:1px solid var(--line);border-radius:16px;padding:20px 24px;margin-bottom:14px;
  transition:transform .3s,border-color .3s,opacity .3s}
.tool-row:hover{transform:translateX(6px);border-color:var(--gold)}
.tool-row .tname{font-weight:600;font-size:18px}
.tool-row .tdesc{color:var(--muted);font-size:14px}
.tool-row .verdict{font-size:12px;font-weight:700;padding:6px 14px;border-radius:999px;white-space:nowrap}
.verdict.hit{color:#7CFFB0;background:rgba(124,255,176,.08);border:1px solid rgba(124,255,176,.3)}
.verdict.keep{color:var(--gold);background:rgba(233,197,106,.08);border:1px solid rgba(233,197,106,.3)}
.verdict.skip{color:#ff8a8a;background:rgba(255,138,138,.07);border:1px solid rgba(255,138,138,.28)}
.tool-row.hide{display:none}
.stack-empty{text-align:center;color:var(--muted);padding:40px;display:none}

/* ---------- contact form ---------- */
.form-card{max-width:620px;margin:0 auto;background:linear-gradient(160deg,var(--card),#0c0c11);
  border:1px solid var(--line);border-radius:22px;padding:40px}
.field{margin-bottom:22px}
.field label{display:block;font-weight:600;font-size:14px;margin-bottom:8px}
.field input,.field textarea,.field select{width:100%;background:#0a0a0f;border:1px solid var(--line);border-radius:12px;
  padding:14px 16px;color:var(--text);font-family:inherit;font-size:15px;transition:border-color .2s,box-shadow .2s}
.field textarea{resize:vertical;min-height:130px}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--gold);box-shadow:0 0 0 3px rgba(233,197,106,.15)}
.field.err input,.field.err textarea,.field.err select{border-color:#ff6b6b}
.field .msg{color:#ff8a8a;font-size:12.5px;margin-top:6px;display:none}
.field.err .msg{display:block}
.form-error{font-size:13.5px;color:#ff8a8a;text-align:center;margin-top:14px}
.form-ok{display:none;text-align:center;padding:30px;border:1px solid var(--gold);border-radius:16px;background:rgba(233,197,106,.05)}
.form-ok h3{color:var(--gold);margin-bottom:8px}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media(max-width:680px){.contact-grid{grid-template-columns:1fr}}

/* ---------- reveal + responsive ---------- */
.reveal{opacity:0;transform:translateY(34px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.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}

@media(max-width:880px){
  .showcase{grid-template-columns:1fr}
  .about-grid{grid-template-columns:1fr}
  .nav-links{display:none}
  .nav-links.open{display:flex;position:absolute;top:68px;left:0;right:0;flex-direction:column;gap:0;
    background:rgba(6,6,8,.96);border-bottom:1px solid var(--line);padding:8px 24px 20px}
  .nav-links.open a{padding:14px 0;border-bottom:1px solid var(--line)}
  .nav-toggle{display:block}
  .tool-row{grid-template-columns:1fr;gap:8px}
  .tool-row .verdict{justify-self:start}
}
@media(max-width:560px){
  section{padding:78px 0}
  .stats{gap:26px}
  .stat b{font-size:28px}
  .hero{padding:110px 0 70px}
  .marquee span{font-size:14px;gap:32px}
  .form-card{padding:28px 22px}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}