/* ============================================================
   THE ON-CHAIN ANALYST'S PATH — PulseChain edition (dark-only)
   Palette: faithful PulseChain holographic reconstruction
   ============================================================ */
:root{
  --bg:#0A0A12;
  --bg-2:#14141F;
  --bg-3:#1C1C2B;
  --surface:rgba(255,255,255,.035);
  --surface-2:rgba(255,255,255,.06);
  --stroke:rgba(255,255,255,.09);
  --stroke-2:rgba(255,255,255,.17);
  --text:#ECECF4;
  --text-2:#9A9AB0;
  --text-3:#6A6A82;

  --pink:#FF1FB4;
  --magenta:#E619E6;
  --purple:#8B2FE6;
  --royal:#3D5BFF;
  --blue:#1E9BFF;
  --cyan:#00E0FF;
  --green:#00FF85;
  --up:#00FF55;
  --down:#FF4D4D;

  --pulse:linear-gradient(120deg,#FF1FB4 0%,#E619E6 22%,#8B2FE6 40%,#3D5BFF 58%,#1E9BFF 72%,#00E0FF 86%,#00FF85 100%);

  --mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
  --sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --display:'Space Grotesk','Inter',sans-serif;

  --radius:16px;
  --radius-sm:11px;
  --side:268px;
  --hh:60px;
  --shadow:0 24px 70px -24px rgba(0,0,0,.75);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--hh) + 26px);font-size:16px}
body{font-family:var(--sans);background:var(--bg);color:var(--text);line-height:1.75;-webkit-font-smoothing:antialiased;overflow-x:hidden;position:relative}
body::before{content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:radial-gradient(640px 540px at 8% -6%,rgba(255,31,180,.16),transparent 60%),radial-gradient(700px 620px at 100% 4%,rgba(0,224,255,.13),transparent 60%),radial-gradient(760px 720px at 60% 112%,rgba(139,47,230,.16),transparent 62%)}
body::after{content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.022) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.022) 1px,transparent 1px);background-size:66px 66px;
  -webkit-mask-image:radial-gradient(circle at 50% 22%,#000,transparent 82%);mask-image:radial-gradient(circle at 50% 22%,#000,transparent 82%)}

/* progress + header */
#bar{position:fixed;top:0;left:0;height:3px;width:0;background:var(--pulse);z-index:60;box-shadow:0 0 16px rgba(0,224,255,.55)}
header{position:fixed;top:3px;left:0;right:0;z-index:50;height:var(--hh);backdrop-filter:blur(15px);background:rgba(10,10,18,.62);border-bottom:1px solid var(--stroke)}
.hd{display:flex;align-items:center;justify-content:space-between;height:100%;max-width:1320px;margin:0 auto;padding:0 24px}
.brand{display:flex;align-items:center;gap:11px;font-family:var(--display);font-weight:700;letter-spacing:-.01em;font-size:1.02rem}
.pc-logo{width:30px;height:30px;flex:none;filter:drop-shadow(0 0 9px rgba(139,47,230,.6))}
.hd .right{display:flex;align-items:center;gap:20px;font-size:.82rem;color:var(--text-2)}
.hd .right a{color:var(--text-2);text-decoration:none;transition:color .2s}
.hd .right a:hover{color:var(--text)}
.hd .right a.active{color:var(--text);font-weight:600}
.tag{font-family:var(--mono);font-size:.7rem;color:var(--cyan);border:1px solid rgba(0,224,255,.32);padding:3px 10px;border-radius:999px;background:rgba(0,224,255,.06)}

/* layout */
.layout{position:relative;z-index:1;display:flex;max-width:1320px;margin:0 auto;padding-top:var(--hh)}
.sidebar{width:var(--side);flex:none;position:sticky;top:var(--hh);align-self:flex-start;height:calc(100vh - var(--hh));overflow-y:auto;padding:30px 16px 40px 24px}
.sidebar .grp{font-family:var(--mono);font-size:.66rem;letter-spacing:.18em;text-transform:uppercase;color:var(--text-3);margin:22px 0 10px;padding-left:12px}
.sidebar a{display:flex;align-items:center;gap:11px;padding:8px 12px;border-radius:9px;color:var(--text-2);text-decoration:none;font-size:.88rem;transition:.18s;border-left:2px solid transparent}
.sidebar a .n{font-family:var(--mono);font-size:.72rem;color:var(--text-3);min-width:18px}
.sidebar a:hover{background:var(--surface);color:var(--text)}
.sidebar a.active{color:#fff;background:var(--surface-2)}
.sidebar a.active{border-image:var(--pulse) 1;border-left-width:2px}
.sidebar a.active .n{color:var(--cyan)}
main{flex:1;min-width:0;padding:0 clamp(20px,4vw,64px) 60px}

/* hero */
.hero{padding:64px 0 36px;text-align:center}
.hero-logos{display:flex;align-items:flex-end;justify-content:center;gap:52px;margin-bottom:6px}
.logo-fig{display:flex;flex-direction:column;align-items:center;gap:16px;margin:0}
.hero-logos .pc-logo{width:128px;height:128px;animation:float 6s ease-in-out infinite;filter:drop-shadow(0 0 28px rgba(255,31,180,.45)) drop-shadow(0 0 40px rgba(0,224,255,.3))}
.hero-logos .pdai-logo{width:110px;height:110px;animation:float 6s ease-in-out infinite .9s;filter:drop-shadow(0 0 30px rgba(0,224,255,.45))}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
.logo-fig figcaption{font-family:var(--mono);font-size:.76rem;letter-spacing:.16em;color:var(--text-2)}
.kicker{display:inline-flex;align-items:center;gap:9px;font-family:var(--mono);font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;color:var(--text-2);border:1px solid var(--stroke-2);padding:7px 15px;border-radius:999px;background:var(--surface);margin-top:26px}
.kicker b{color:var(--green);font-weight:600}
.dot{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 12px var(--green);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
h1{font-family:var(--display);font-size:clamp(2.5rem,6vw,4.6rem);line-height:1.04;letter-spacing:-.035em;font-weight:700;margin:22px 0 0}
.grad{background:var(--pulse);background-size:240% auto;-webkit-background-clip:text;background-clip:text;color:transparent;animation:shift 8s linear infinite}
@keyframes shift{to{background-position:240% center}}
.byline{margin-top:22px}
.author-badge{display:inline-flex;align-items:center;gap:.55em;padding:9px 18px 9px 14px;border-radius:999px;background:var(--surface);position:relative;font-family:var(--mono);font-size:.86rem;color:var(--text-2)}
.author-badge::before{content:"";position:absolute;inset:0;border-radius:999px;padding:1px;background:var(--pulse);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude}
.author-badge b{font-weight:600}
.whale-mark{width:2.15em;height:1.75em;flex:none;filter:drop-shadow(0 0 6px rgba(139,47,230,.6))}
.npath{stroke-dasharray:100;stroke-dashoffset:100;animation:ndraw 4.2s ease-in-out infinite}
@keyframes ndraw{0%{stroke-dashoffset:100;opacity:1}45%{stroke-dashoffset:0;opacity:1}86%{stroke-dashoffset:0;opacity:1}100%{stroke-dashoffset:0;opacity:0}}
.wdrop{opacity:0;animation:wdpop 4.2s ease-in-out infinite}
@keyframes wdpop{0%,46%{opacity:0}56%{opacity:1}86%{opacity:.9}100%{opacity:0}}
.wdrop.d2{animation-delay:.12s}.wdrop.d3{animation-delay:.24s}
.weye{opacity:0;animation:weyeon 4.2s ease-in-out infinite}
@keyframes weyeon{0%,42%{opacity:0}52%{opacity:1}86%{opacity:1}100%{opacity:0}}
@media(prefers-reduced-motion:reduce){.npath{animation:none;stroke-dashoffset:0}.wdrop,.weye{animation:none;opacity:1}}
.tagline{max-width:640px;margin:26px auto 0;font-size:1.32rem;font-family:var(--display);font-weight:500;letter-spacing:-.01em;color:var(--text);line-height:1.35}
.sub{max-width:660px;margin:18px auto 0;font-size:1.04rem;color:var(--text-2)}
.cta{display:flex;gap:13px;justify-content:center;margin-top:34px;flex-wrap:wrap}
.btn{font-family:var(--display);font-weight:600;font-size:.94rem;padding:13px 25px;border-radius:12px;text-decoration:none;border:1px solid transparent;transition:transform .15s,box-shadow .25s,border-color .2s;cursor:pointer}
.btn-p{color:#0a0612;background:var(--pulse);background-clip:padding-box;border-color:transparent;box-shadow:inset 0 0 0 1px rgba(8,6,18,.22),0 12px 34px -12px rgba(255,31,180,.5)}
.btn-p:hover{transform:translateY(-2px);box-shadow:inset 0 0 0 1px rgba(8,6,18,.22),0 18px 44px -12px rgba(0,224,255,.5)}
.btn-g{color:var(--text);background:var(--surface);border-color:var(--stroke-2)}
.btn-g:hover{border-color:var(--cyan);color:#fff}
.metrics{display:flex;gap:34px;justify-content:center;margin-top:50px;flex-wrap:wrap}
.metric .n{font-family:var(--display);font-size:2rem;font-weight:700;background:var(--pulse);-webkit-background-clip:text;background-clip:text;color:transparent}
.metric .l{font-size:.74rem;color:var(--text-3);font-family:var(--mono);letter-spacing:.05em;text-transform:uppercase}

/* generic section */
.sec{padding:46px 0;scroll-margin-top:calc(var(--hh) + 26px)}
.eyebrow{font-family:var(--mono);font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;color:var(--cyan)}
.sec h2.big{font-family:var(--display);font-size:clamp(1.7rem,3.6vw,2.4rem);letter-spacing:-.02em;margin:10px 0 0;font-weight:700}
.prose p{color:var(--text-2);margin-top:16px;font-size:1.02rem}
.prose p b{color:var(--text);font-weight:600}
.prose em{color:var(--text);font-style:italic}
.prose code,.cmd-explain code,.callout code,.thesis code,.gl-def code{font-family:var(--mono);font-size:.85em;color:var(--cyan);background:rgba(0,224,255,.08);padding:1px 6px;border-radius:5px;word-break:break-word}
.whofor{margin-top:26px;background:linear-gradient(180deg,var(--bg-2),var(--bg-3));border:1px solid var(--stroke);border-radius:var(--radius);padding:22px 24px;position:relative;overflow:hidden}
.whofor::before{content:"";position:absolute;top:0;left:0;bottom:0;width:3px;background:var(--pulse)}
.whofor .lbl{font-family:var(--mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--green)}
.whofor p{margin-top:8px;color:var(--text-2)}

/* stage sections */
.stage-sec{padding:54px 0 30px;border-top:1px solid var(--stroke);scroll-margin-top:calc(var(--hh) + 26px)}
.stage-head{display:flex;align-items:center;gap:20px}
.stage-no{font-family:var(--display);font-size:3.4rem;font-weight:700;line-height:1;background:var(--pulse);-webkit-background-clip:text;background-clip:text;color:transparent;flex:none}
.stage-kicker{font-family:var(--mono);font-size:.74rem;letter-spacing:.16em;text-transform:uppercase;color:var(--cyan)}
.stage-title{font-family:var(--display);font-size:clamp(1.5rem,3vw,2.05rem);letter-spacing:-.02em;margin-top:3px;font-weight:700;line-height:1.12}
.thesis{font-size:1.18rem;color:var(--text);margin:24px 0 4px;padding-left:18px;border-left:2px solid;border-image:var(--pulse) 1;line-height:1.5}

/* command blocks */
.cmd{margin-top:24px}
.code{border-radius:13px;overflow:hidden;border:1px solid var(--stroke-2);background:#06060d}
.code-bar{display:flex;align-items:center;gap:8px;padding:9px 14px;background:rgba(255,255,255,.03);border-bottom:1px solid var(--stroke)}
.tl{width:11px;height:11px;border-radius:50%}
.tl.r{background:#ff5f57}.tl.y{background:#febc2e}.tl.g{background:#28c840}
.code-bar .fn{margin-left:8px;font-family:var(--mono);font-size:.73rem;color:var(--text-3)}
.code-bar .copy{margin-left:auto;font-family:var(--mono);font-size:.71rem;color:var(--cyan);background:rgba(0,224,255,.08);border:1px solid rgba(0,224,255,.26);padding:4px 11px;border-radius:7px;cursor:pointer;transition:.2s}
.code-bar .copy:hover{background:rgba(0,224,255,.18)}
pre{padding:16px 18px;overflow-x:auto;font-family:var(--mono);font-size:.84rem;line-height:1.7;color:#E7ECF2;white-space:pre}
.tk-com{color:#5f6a7d}.tk-cmd{color:var(--cyan)}.tk-str{color:var(--green)}.tk-flag{color:var(--magenta)}.tk-num{color:#ffd479}
.cmd-explain{font-size:.94rem;color:var(--text-2);margin-top:12px;padding-left:2px}
.cmd-out{margin-top:10px;font-family:var(--mono);font-size:.8rem;color:var(--text-2);background:rgba(0,255,133,.05);border:1px solid rgba(0,255,133,.18);border-radius:9px;padding:10px 13px;white-space:pre-wrap;word-break:break-word}
.cmd-out .arrow{color:var(--green);font-weight:600;margin-right:8px;text-transform:uppercase;font-size:.72rem;letter-spacing:.08em}

/* callouts */
.callout{margin-top:22px;display:flex;gap:15px;border-radius:13px;padding:16px 18px;border:1px solid;align-items:flex-start}
.callout .ico{font-family:var(--display);font-weight:700;font-size:.82rem;flex:none;width:30px;height:30px;border-radius:8px;display:flex;align-items:center;justify-content:center}
.callout p,.callout div>span{color:var(--text-2);font-size:.95rem}
.callout b{color:var(--text)}
.callout.trap{background:rgba(255,31,180,.06);border-color:rgba(255,31,180,.28)}
.callout.trap .ico{background:rgba(255,31,180,.16);color:var(--pink)}
.callout.trap b{color:var(--pink)}
.callout.ai{background:rgba(139,47,230,.07);border-color:rgba(139,47,230,.3)}
.callout.ai .ico{background:rgba(139,47,230,.18);color:#c79bff}
.callout.ai b{color:#c79bff}
.callout.pc{background:rgba(0,224,255,.05);border-color:rgba(0,224,255,.26)}
.callout.pc .ico{background:rgba(0,224,255,.14);color:var(--cyan);font-size:.72rem}
.callout.pc b{color:var(--cyan)}
.takeaway{margin-top:24px;display:flex;gap:13px;align-items:baseline;background:linear-gradient(180deg,var(--bg-2),var(--bg-3));border:1px solid var(--stroke);border-radius:13px;padding:18px 20px;font-size:1.06rem;color:var(--text);line-height:1.5}
.takeaway span{font-family:var(--mono);font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;color:var(--green);flex:none;align-self:flex-start;margin-top:4px}

/* glossary */
.gl-search{margin-top:24px;width:100%;max-width:420px;font-family:var(--mono);font-size:.9rem;color:var(--text);background:var(--surface);border:1px solid var(--stroke-2);border-radius:11px;padding:12px 16px;outline:none;transition:border-color .2s}
.gl-search:focus{border-color:var(--cyan)}
.gl-search::placeholder{color:var(--text-3)}
.gl-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px;margin-top:24px}
.gl-item{background:var(--surface);border:1px solid var(--stroke);border-radius:var(--radius-sm);padding:16px 18px;transition:.2s}
.gl-item:hover{border-color:var(--stroke-2);background:var(--surface-2)}
.gl-term{font-family:var(--mono);font-size:.92rem;font-weight:600;color:var(--cyan);margin-bottom:6px}
.gl-def{font-size:.9rem;color:var(--text-2);line-height:1.6}
.gl-empty{color:var(--text-3);margin-top:20px;font-family:var(--mono);font-size:.85rem}

footer{position:relative;z-index:1;padding:54px 24px 46px;text-align:center;color:var(--text-3);font-size:.84rem;border-top:1px solid var(--stroke);margin-top:40px;line-height:1.9}
.sig b{font-weight:600}
.sig .whale-mark{width:1.85em;height:1.5em;vertical-align:-.45em}
.disclaimer{max-width:720px;margin:18px auto 0;font-size:.74rem;color:var(--text-3);line-height:1.7}

@media(max-width:980px){.sidebar{display:none}main{padding:0 22px 50px}.hero-logos .pc-logo{width:104px;height:104px}.hero-logos .pdai-logo{width:84px;height:84px}}
::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:8px}::-webkit-scrollbar-track{background:transparent}