@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700;900&family=Inter:wght@300;400;500&family=Roboto+Mono:wght@400;500&display=swap');
:root{--void:#08090a;--steel:#111418;--plate:#181d24;--chrome:#d8e4f0;--silver:#a0b8c8;--blade:#e8f4ff;--blue:#2070c8;--sky:#40a0e8;--edge:#f0f8ff;--text:#8090a0;--muted:#485060;--accent:#60c8e0;}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}html{scroll-behavior:smooth;}
body{font-family:'Inter',sans-serif;background:var(--void);color:var(--text);min-height:100vh;}
#prog{position:fixed;top:0;left:0;height:2px;background:linear-gradient(to right,var(--blue),var(--accent));z-index:1000;width:0%;}
#bt{position:fixed;bottom:28px;right:28px;width:44px;height:44px;background:var(--steel);border:1px solid var(--blue);color:var(--sky);font-size:.9rem;border-radius:2px;display:flex;align-items:center;justify-content:center;cursor:pointer;opacity:0;pointer-events:none;transition:opacity .3s,transform .25s;z-index:999;text-decoration:none;}
#bt.on{opacity:1;pointer-events:auto;}#bt:hover{transform:translateY(-3px);}
.nav{background:var(--steel);border-bottom:2px solid rgba(64,160,232,.2);padding:10px 28px;display:flex;align-items:center;justify-content:space-between;}
.nav .bc{font-family:'Roboto Mono',monospace;font-size:.6rem;color:rgba(64,160,232,.55);letter-spacing:.12em;}
.nav .bc .s{color:rgba(64,160,232,.18);margin:0 8px;}
.nav .tag{font-family:'Orbitron',sans-serif;font-size:.6rem;color:var(--accent);letter-spacing:.1em;}
.hero{position:relative;min-height:530px;display:flex;align-items:flex-end;overflow:hidden;}
.void-bg{position:absolute;inset:0;background:radial-gradient(ellipse at 50% 60%,rgba(20,30,50,.4) 0%,var(--void) 65%);}
.edge-light{position:absolute;bottom:200px;left:0;right:0;height:1px;background:linear-gradient(to right,transparent,rgba(64,160,232,.25) 30%,rgba(224,240,255,.5) 50%,rgba(64,160,232,.25) 70%,transparent);}
.scalpel-svg{position:absolute;bottom:82px;left:50%;transform:translateX(-50%) rotate(-5deg);width:min(760px,92vw);filter:drop-shadow(0 0 20px rgba(64,160,232,.15));}
.ground{position:absolute;bottom:0;left:0;right:0;height:90px;background:linear-gradient(to top,rgba(8,9,10,.98) 0%,rgba(8,9,10,.7) 60%,transparent);}
.hero-txt{position:relative;z-index:2;width:100%;padding:40px 44px 52px;background:linear-gradient(to top,rgba(6,7,8,.98) 0%,rgba(6,7,8,.65) 55%,transparent);}
.hero-eyebrow{font-family:'Orbitron',sans-serif;font-size:.55rem;color:var(--accent);letter-spacing:.3em;margin-bottom:10px;}
.hero h1{font-family:'Orbitron',sans-serif;font-size:clamp(3rem,7.5vw,6rem);font-weight:900;color:var(--blade);line-height:.88;letter-spacing:.04em;}
.hero h1 em{display:block;font-size:.3em;font-weight:400;font-style:normal;color:var(--silver);letter-spacing:.2em;margin-bottom:6px;font-family:'Roboto Mono',monospace;}
.hero-sub{margin-top:12px;font-size:1.04rem;color:rgba(160,184,200,.78);max-width:540px;line-height:1.78;font-weight:300;}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.chip{padding:4px 14px;border:1px solid;font-family:'Roboto Mono',monospace;font-size:.6rem;letter-spacing:.12em;border-radius:1px;}
.ch-b{border-color:rgba(32,112,200,.45);color:var(--sky);}
.ch-a{border-color:rgba(96,200,224,.35);color:var(--accent);}
.main{max-width:1100px;margin:0 auto;padding:0 24px 80px;}
.intro{background:var(--steel);border-left:3px solid var(--blue);padding:26px 42px;margin-bottom:36px;}
.intro p{font-size:1.05rem;color:var(--chrome);line-height:1.85;font-weight:300;}
.intro strong{color:var(--sky);}
.grid{display:grid;grid-template-columns:1fr 320px;gap:32px;}
.sh{font-family:'Orbitron',sans-serif;font-size:1.1rem;font-weight:700;color:var(--sky);margin:44px 0 14px;padding-bottom:8px;border-bottom:1px solid rgba(64,160,232,.18);letter-spacing:.05em;display:flex;align-items:center;gap:10px;}
.sh:first-child{margin-top:0;}
.mc p{font-size:1rem;color:var(--text);line-height:1.85;margin-bottom:14px;}
.mc strong{color:var(--chrome);}
.types{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px;margin:14px 0;}
.ty{background:var(--plate);border:1px solid rgba(64,160,232,.12);border-top:2px solid var(--blue);padding:13px;opacity:0;transform:translateY(12px);transition:opacity .5s,transform .5s;}
.ty.on{opacity:1;transform:translateY(0);}
.ty h4{font-family:'Orbitron',sans-serif;font-size:.78rem;color:var(--accent);margin-bottom:4px;letter-spacing:.05em;}
.ty p{font-size:.82rem!important;color:var(--muted)!important;margin:0!important;line-height:1.48!important;}
.dt{width:100%;border-collapse:collapse;margin:16px 0;font-size:.86rem;}
.dt thead th{background:var(--plate);color:var(--sky);padding:9px 13px;text-align:left;font-family:'Roboto Mono',monospace;font-size:.63rem;letter-spacing:.1em;border-bottom:1px solid rgba(64,160,232,.2);}
.dt td{padding:7px 13px;border-bottom:1px solid rgba(64,160,232,.07);color:var(--text);}
.dt tr:hover td{background:rgba(64,160,232,.04);}
.dt td:first-child{font-family:'Roboto Mono',monospace;color:var(--accent);font-size:.77rem;}
.tl{position:relative;padding-left:26px;margin:14px 0;}
.tl::before{content:'';position:absolute;left:8px;top:0;bottom:0;width:1px;background:linear-gradient(to bottom,var(--blue),var(--accent),transparent);}
.tl-item{position:relative;margin-bottom:17px;opacity:0;transform:translateX(-10px);transition:opacity .45s,transform .45s;}
.tl-item.on{opacity:1;transform:translateX(0);}
.tl-item::before{content:'';position:absolute;left:-21px;top:5px;width:8px;height:8px;background:var(--blue);transform:rotate(45deg);}
.tl-yr{font-family:'Roboto Mono',monospace;font-size:.66rem;color:var(--accent);font-weight:500;letter-spacing:.12em;margin-bottom:1px;}
.tl-item p{font-size:.97rem!important;margin:0!important;line-height:1.6!important;}
.vocab{list-style:none;}
.vocab li{display:flex;gap:12px;padding:8px 0;border-bottom:1px solid rgba(64,160,232,.07);opacity:0;transform:translateX(-8px);transition:opacity .4s,transform .4s;}
.vocab li.on{opacity:1;transform:translateX(0);}
.vocab li:last-child{border-bottom:none;}
.vt{font-family:'Roboto Mono',monospace;font-size:.71rem;color:var(--accent);min-width:130px;flex-shrink:0;}
.vd{font-size:.92rem;color:var(--text);}
.scard{background:var(--plate);border:1px solid rgba(64,160,232,.14);border-radius:2px;padding:18px;margin-bottom:16px;position:relative;}
.scard::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(to right,var(--blue),var(--accent));}
.scard h3{font-family:'Orbitron',sans-serif;font-size:.8rem;color:var(--sky);margin-bottom:12px;padding-bottom:7px;border-bottom:1px solid rgba(64,160,232,.12);letter-spacing:.05em;}
.kl{list-style:none;}
.kl li{display:flex;justify-content:space-between;padding:6px 0;border-bottom:1px solid rgba(64,160,232,.06);}
.kl li:last-child{border-bottom:none;}
.kk{font-size:.8rem;color:var(--muted);}
.kv{font-family:'Roboto Mono',monospace;font-size:.82rem;color:var(--accent);}
footer{background:var(--steel);border-top:1px solid rgba(64,160,232,.14);padding:20px 44px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;}
.fb{font-family:'Orbitron',sans-serif;font-size:.8rem;color:var(--sky);letter-spacing:.06em;}
.fm{font-family:'Roboto Mono',monospace;font-size:.6rem;color:var(--muted);text-align:right;line-height:1.8;}
@media(max-width:820px){.grid{grid-template-columns:1fr;}.types{grid-template-columns:1fr 1fr;}.hero-txt{padding:28px 20px 34px;}}