:root{--bg:#0d0822;--bg2:#160e36;--ink:#f3efff;--mute:#b3a9d6;--line:rgba(255,255,255,.12);--glass:rgba(255,255,255,.055);--glass2:rgba(255,255,255,.09);--vio:#8b5cf6;--pink:#ec4899;--gold:#fbbf24;--cyan:#22d3ee;--grad:linear-gradient(120deg,#8b5cf6 0%,#ec4899 55%,#fbbf24 100%);--r:20px}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;color:var(--ink);font:17px/1.7 Manrope,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;background:var(--bg);background-image:radial-gradient(1200px 600px at 85% -10%,rgba(236,72,153,.28),transparent 60%),radial-gradient(900px 600px at -10% 10%,rgba(139,92,246,.35),transparent 60%),radial-gradient(800px 500px at 50% 110%,rgba(34,211,238,.12),transparent 60%);background-attachment:fixed;min-height:100vh;overflow-x:hidden}
body::before{content:"";position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.55;background-image:radial-gradient(1.2px 1.2px at 12% 18%,#fff 50%,transparent 51%),radial-gradient(1px 1px at 72% 12%,#fff 50%,transparent 51%),radial-gradient(1.4px 1.4px at 38% 62%,#fff 50%,transparent 51%),radial-gradient(1px 1px at 88% 48%,#fff 50%,transparent 51%),radial-gradient(1.1px 1.1px at 24% 84%,#fff 50%,transparent 51%),radial-gradient(1px 1px at 58% 34%,#fde68a 50%,transparent 51%),radial-gradient(1.3px 1.3px at 94% 86%,#fff 50%,transparent 51%),radial-gradient(1px 1px at 6% 52%,#c4b5fd 50%,transparent 51%);background-size:420px 420px}
header,main,footer{position:relative;z-index:1}
a{color:#f9a8d4;text-decoration-color:rgba(249,168,212,.4);text-underline-offset:3px}
a:hover{color:#fde68a}
img{max-width:100%;height:auto}
.wrap{max-width:1120px;margin:0 auto;padding:0 16px}
.narrow{max-width:820px}
h1,h2,h3,.disp{font-family:Unbounded,Manrope,sans-serif;font-weight:700;letter-spacing:-.02em;overflow-wrap:break-word;hyphens:auto;-webkit-hyphens:auto}
h1{font-size:44px;line-height:1.12;margin:22px 0 16px}
h2{font-size:28px;line-height:1.22;margin:48px 0 14px}
h3{font-size:20px;line-height:1.3;margin:28px 0 10px}
p{margin:0 0 15px}
ul,ol{padding-left:22px;margin:0 0 18px}
li{margin:5px 0}
b,strong{color:#fff}
.gt{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
@media(max-width:700px){h1{font-size:31px}h2{font-size:23px}body{font-size:16.5px}}
/* header */
.top{position:sticky;top:0;z-index:30;background:rgba(13,8,34,.72);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.top-in{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;white-space:nowrap;align-items:center;gap:10px;text-decoration:none;color:#fff;font:700 19px Unbounded,sans-serif;letter-spacing:-.02em}
.brand:hover{color:#fff}
.brand i{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.menu ul{display:flex;gap:2px;list-style:none;margin:0;padding:0}
.menu a{display:block;white-space:nowrap;padding:8px 12px;border-radius:12px;text-decoration:none;color:#e4dcff;font-size:15px;font-weight:600}
.menu a:hover,.menu a.on{background:var(--glass2);color:#fff}
.menu .m-cta a{background:var(--grad);color:#1a0b2e;margin-left:6px}
.burger{display:none;background:var(--glass);color:#fff;border:1px solid var(--line);border-radius:12px;font-size:22px;padding:4px 12px;cursor:pointer}
@media(max-width:1100px){.burger{display:block}.menu{display:none;position:absolute;top:68px;left:0;right:0;background:#150d33;border-bottom:1px solid var(--line);padding:10px 16px}.menu-open .menu{display:block}.menu ul{flex-direction:column}.menu .m-cta a{margin:6px 0 0;text-align:center}}
/* crumbs */
.bc{font-size:14px;color:var(--mute);margin:20px 0 0}
.bc a{color:var(--mute);text-decoration:none}.bc a:hover{color:#fff}.bc i{font-style:normal;margin:0 6px;opacity:.6}
/* hero */
.hero{position:relative;text-align:center;padding:64px 0 30px}
.hero .kick{display:inline-flex;align-items:center;gap:8px;background:var(--glass);border:1px solid var(--line);border-radius:30px;padding:7px 16px;font-size:14px;color:#e9ddff;font-weight:600}
.hero h1{font-size:56px;max-width:900px;margin:18px auto 16px}
.hero .lead{font-size:19px;color:#d6ccf5;max-width:680px;margin:0 auto 26px}
@media(max-width:700px){.hero{padding:34px 0 16px}.hero h1{font-size:34px}.hero .lead{font-size:17px}}
.lead{font-size:18px;color:#dcd3f7}
.orb{position:absolute;border-radius:50%;filter:blur(40px);opacity:.55;pointer-events:none;z-index:-1}
/* calculator card */
.calc{position:relative;max-width:640px;margin:0 auto;background:linear-gradient(160deg,rgba(139,92,246,.22),rgba(236,72,153,.12) 60%,rgba(251,191,36,.08));border:1px solid rgba(255,255,255,.18);border-radius:28px;padding:28px;box-shadow:0 30px 80px rgba(80,20,160,.45),inset 0 1px 0 rgba(255,255,255,.15);text-align:left}
.calc label{display:block;font-size:14px;font-weight:700;color:#e9ddff;margin:0 0 8px;letter-spacing:.02em}
.calc .row{display:flex;gap:12px;flex-wrap:wrap}
.calc input[type=text],.calc input[type=date],.calc select{flex:1;min-width:0;width:100%;font:600 20px Manrope,sans-serif;color:#fff;background:rgba(10,5,30,.55);border:1px solid rgba(255,255,255,.2);border-radius:16px;padding:15px 18px;outline:none;transition:border-color .2s,box-shadow .2s}
.calc input:focus{border-color:#f472b6;box-shadow:0 0 0 4px rgba(236,72,153,.2)}
.calc input::placeholder{color:#8f84b8}
.calc .two{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:560px){.calc{padding:20px;border-radius:22px}.calc .two{grid-template-columns:1fr}}
.calc .hint{font-size:13px;color:var(--mute);margin:12px 0 0;display:flex;gap:16px;flex-wrap:wrap;justify-content:center}
.calc .err{color:#fda4af;font-size:14px;margin:10px 0 0;display:none}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--grad);background-size:160% 100%;color:#1a0b2e;font:800 17px Manrope,sans-serif;text-decoration:none;border:0;cursor:pointer;padding:16px 28px;border-radius:16px;white-space:nowrap;box-shadow:0 10px 30px rgba(236,72,153,.35);transition:transform .15s,background-position .4s,box-shadow .2s}
.btn:hover{transform:translateY(-2px);background-position:100% 0;color:#1a0b2e;box-shadow:0 14px 36px rgba(236,72,153,.5)}
.btn-wide{width:100%;margin-top:16px;font-size:18px;padding:18px}
.btn-ghost{background:var(--glass2);color:#fff;border:1px solid var(--line);box-shadow:none}
.btn-ghost:hover{color:#fff;background:rgba(255,255,255,.14);box-shadow:none}
/* sections */
.sec{margin:64px 0}
.sec-h{text-align:center;max-width:720px;margin:0 auto 26px}
.sec-h h2{margin-top:0}
.sec-h p{color:var(--mute)}
/* tool tiles */
.tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px}
.tile{position:relative;display:block;overflow:hidden;background:var(--glass);border:1px solid var(--line);border-radius:var(--r);padding:24px;text-decoration:none;color:var(--ink);transition:transform .2s,border-color .2s,background .2s}
.tile:hover{transform:translateY(-4px);border-color:rgba(236,72,153,.55);background:var(--glass2);color:var(--ink)}
.tile .ic{display:inline-grid;place-items:center;min-width:54px;height:54px;padding:0 12px;border-radius:16px;font:800 20px Unbounded,sans-serif;white-space:nowrap;color:#1a0b2e;margin-bottom:14px}
.tile b{display:block;font:700 18px Unbounded,sans-serif;margin-bottom:6px;letter-spacing:-.02em}
.tile p{font-size:15px;color:var(--mute);margin:0 0 12px}
.tile .more{font-size:14px;font-weight:700;color:#f9a8d4}
.g1{background:linear-gradient(135deg,#a78bfa,#ec4899)}.g2{background:linear-gradient(135deg,#f472b6,#fbbf24)}.g3{background:linear-gradient(135deg,#22d3ee,#8b5cf6)}.g4{background:linear-gradient(135deg,#fbbf24,#fb7185)}.g5{background:linear-gradient(135deg,#34d399,#22d3ee)}.g6{background:linear-gradient(135deg,#c084fc,#22d3ee)}
/* cards generic */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px;margin:18px 0 28px}
.card{display:block;background:var(--glass);border:1px solid var(--line);border-radius:18px;padding:18px 20px;text-decoration:none;color:var(--ink);transition:border-color .2s,transform .2s}
.card:hover{border-color:rgba(251,191,36,.5);transform:translateY(-2px);color:var(--ink)}
.card b{display:block;font-size:17px;margin-bottom:6px}.card p{font-size:14px;color:var(--mute);margin:0 0 8px}
.card em{display:inline-block;font-style:normal;font-size:12px;font-weight:800;background:rgba(251,191,36,.15);color:#fde68a;padding:3px 10px;border-radius:20px;margin-bottom:10px}
.card .more{font-size:14px;color:#f9a8d4;font-weight:700}
/* arcana grid */
.arc-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:14px}
.arc{display:block;text-align:center;text-decoration:none;color:var(--ink);background:var(--glass);border:1px solid var(--line);border-radius:18px;padding:12px 10px 14px;transition:transform .2s,border-color .2s}
.arc:hover{transform:translateY(-4px) rotate(-1deg);border-color:rgba(251,191,36,.6);color:#fff}
.arc img{display:block;width:100%;border-radius:10px;margin-bottom:10px;box-shadow:0 8px 20px rgba(0,0,0,.4)}
.arc span{display:block;font:800 13px Unbounded,sans-serif;color:#fde68a}
.arc b{font-size:14px}
/* numbers grid */
.num-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(92px,1fr));gap:12px}
.num{display:grid;place-items:center;aspect-ratio:1;border-radius:22px;text-decoration:none;font:800 28px Unbounded,sans-serif;color:#fff;background:var(--glass);border:1px solid var(--line);transition:transform .2s,background .2s}
.num:hover{transform:scale(1.06);background:linear-gradient(135deg,rgba(139,92,246,.5),rgba(236,72,153,.4));color:#fff}
/* matrix result */
.res{display:none;margin:34px auto 0;max-width:1000px}
.res.on{display:block;animation:fade .5s ease}
@keyframes fade{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.res-top{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:22px;align-items:start}
@media(max-width:860px){.res-top{grid-template-columns:1fr}}
.mx-box{background:rgba(10,5,30,.5);border:1px solid var(--line);border-radius:26px;padding:14px}
.mx-box svg{display:block;width:100%;height:auto}
.mx-date{text-align:center;font:700 15px Unbounded,sans-serif;color:#e9ddff;margin:4px 0 6px}
.keys{display:grid;gap:12px}
.key{display:grid;grid-template-columns:62px 1fr;gap:14px;align-items:center;background:var(--glass);border:1px solid var(--line);border-radius:18px;padding:12px 14px;text-decoration:none;color:var(--ink);transition:border-color .2s}
.key:hover{border-color:rgba(236,72,153,.6);color:var(--ink)}
.key img{width:62px;border-radius:8px}
.key small{display:block;font-size:12px;color:var(--mute);font-weight:700;text-transform:uppercase;letter-spacing:.06em}
.key b{display:block;font:700 17px Unbounded,sans-serif;margin:2px 0}
.key span{font-size:14px;color:#d6ccf5;line-height:1.45;display:block}
.dest{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:22px 0}
.dest div{background:var(--glass);border:1px solid var(--line);border-radius:18px;padding:16px;text-align:center}
.dest small{display:block;color:var(--mute);font-size:13px;font-weight:700}
.dest b{display:block;font:800 30px Unbounded,sans-serif;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;margin:4px 0}
.dest span{font-size:13px;color:#d6ccf5}
@media(max-width:640px){.dest{grid-template-columns:1fr}}
.tail{display:flex;align-items:center;gap:18px;background:linear-gradient(120deg,rgba(236,72,153,.18),rgba(139,92,246,.14));border:1px solid rgba(236,72,153,.35);border-radius:20px;padding:18px 20px;margin:12px 0}
.tail b.t{font:800 30px Unbounded,sans-serif;color:#fda4af;white-space:nowrap}
.tail p{margin:0;font-size:15px;color:#e9ddff}
@media(max-width:560px){.tail{flex-direction:column;align-items:flex-start}}
/* big CTA */
.cta{position:relative;overflow:hidden;display:flex;align-items:center;justify-content:space-between;gap:22px;background:linear-gradient(120deg,#5b21b6 0%,#be185d 60%,#b45309 120%);border-radius:24px;padding:26px 28px;margin:30px 0;box-shadow:0 20px 60px rgba(190,24,93,.3)}
.cta::after{content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;background:radial-gradient(circle,rgba(253,230,138,.35),transparent 70%)}
.cta-t{position:relative;z-index:1}
.cta b{display:block;font:700 20px Unbounded,sans-serif;color:#fff;line-height:1.3}
.cta p{margin:8px 0 0;color:#ffe4f3;font-size:15px}
.cta small{display:block;color:#f5d0fe;font-size:12px;margin-top:8px;opacity:.85}
.cta .btn{position:relative;z-index:1;background:#fff;color:#4c1d95;box-shadow:0 10px 30px rgba(0,0,0,.25)}
.cta .btn:hover{background:#fde68a;color:#4c1d95}
@media(max-width:700px){.cta{flex-direction:column;align-items:stretch;padding:22px}.cta .btn{white-space:normal;text-align:center}}
/* article */
.art{max-width:820px;margin:0 auto}
.art h2{scroll-margin-top:90px}
.art-hero{display:grid;grid-template-columns:200px minmax(0,1fr);gap:26px;align-items:center;margin:10px 0 18px}
.art-hero img{border-radius:14px;box-shadow:0 20px 50px rgba(0,0,0,.5),0 0 0 1px rgba(255,255,255,.12)}
@media(max-width:640px){.art-hero{grid-template-columns:minmax(0,1fr);gap:14px;text-align:center}.art-hero img{width:150px;margin:0 auto}.art-hero .btn{white-space:normal;padding:12px 18px;font-size:15px}.art-hero h1{font-size:28px}}
.art-hero .badge{display:inline-block;font:800 13px Unbounded,sans-serif;color:#1a0b2e;background:var(--grad);border-radius:20px;padding:5px 12px;margin-bottom:10px}
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:10px;margin:18px 0}
.facts div{background:var(--glass);border:1px solid var(--line);border-radius:14px;padding:12px 14px}
.facts span{display:block;font-size:12px;color:var(--mute);font-weight:700;text-transform:uppercase;letter-spacing:.05em}.facts b{font-size:16px}
.pc{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:18px 0 24px}
.pc>div{border-radius:18px;padding:18px 20px;border:1px solid var(--line)}
.pc-p{background:rgba(52,211,153,.1);border-color:rgba(52,211,153,.35)!important}.pc-c{background:rgba(251,113,133,.1);border-color:rgba(251,113,133,.35)!important}
.pc-p>b{color:#6ee7b7}.pc-c>b{color:#fda4af}
.pc ul{margin:8px 0 0}
@media(max-width:640px){.pc{grid-template-columns:1fr}}
.note{background:rgba(251,191,36,.1);border:1px solid rgba(251,191,36,.35);border-radius:16px;padding:16px 20px;margin:20px 0}
.tip{background:rgba(34,211,238,.08);border:1px solid rgba(34,211,238,.3);border-radius:16px;padding:16px 20px;margin:20px 0}
.quote{position:relative;background:var(--glass);border:1px solid var(--line);border-left:4px solid var(--pink);border-radius:16px;padding:18px 22px;margin:22px 0;font-size:17px;font-style:italic;color:#efe8ff}
.quote cite{display:block;margin-top:8px;font-style:normal;font-size:14px;color:var(--mute)}
.toc{background:var(--glass);border:1px solid var(--line);border-radius:18px;padding:16px 22px;margin:22px 0}
.toc b{font-family:Unbounded,sans-serif;font-size:15px}
.toc ol{margin:8px 0 0}.toc a{text-decoration:none;color:#e9ddff}.toc a:hover{color:#fde68a}
.tbl-w{overflow-x:auto;margin:16px 0 24px;border:1px solid var(--line);border-radius:18px;background:var(--glass)}
.tbl{border-collapse:collapse;width:100%;font-size:15px;min-width:520px}
.tbl th{background:rgba(139,92,246,.2);text-align:left;padding:12px 14px;font-size:14px}
.tbl td{padding:12px 14px;border-top:1px solid var(--line);vertical-align:top}
.faq details{background:var(--glass);border:1px solid var(--line);border-radius:16px;margin:10px 0;padding:0 18px}
.faq summary{cursor:pointer;font-weight:700;padding:16px 30px 16px 0;list-style:none;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:0;top:12px;font-size:24px;color:#f9a8d4}
.faq details[open] summary::after{content:"−"}
.faq details>div{padding:0 0 16px;color:#ddd4f8}
.ph{margin:24px 0}.ph img{border-radius:18px;display:block}
/* pythagoras */
.pg{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;max-width:420px;margin:0 auto}
.pg div{aspect-ratio:1.15;display:flex;flex-direction:column;align-items:center;justify-content:center;background:var(--glass);border:1px solid var(--line);border-radius:16px;text-align:center;padding:6px}
.pg b{font:800 22px Unbounded,sans-serif;color:#fde68a;letter-spacing:.04em;min-height:28px}
.pg small{font-size:12px;color:var(--mute);font-weight:700}
.big-num{text-align:center;margin:10px 0 18px}
.big-num b{display:inline-grid;place-items:center;width:130px;height:130px;border-radius:50%;font:800 56px Unbounded,sans-serif;color:#1a0b2e;background:var(--grad);box-shadow:0 0 60px rgba(236,72,153,.55)}
.steps{counter-reset:s;list-style:none;padding:0}
.steps li{counter-increment:s;position:relative;padding:0 0 0 52px;margin:0 0 18px}
.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:36px;height:36px;border-radius:12px;display:grid;place-items:center;font:800 15px Unbounded,sans-serif;color:#1a0b2e;background:var(--grad)}
/* footer */
.foot{margin-top:80px;border-top:1px solid var(--line);background:rgba(8,4,22,.6);padding:40px 0 26px;font-size:15px}
.foot-in{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px}
.foot-col b{display:block;font-family:Unbounded,sans-serif;font-size:14px;margin-bottom:10px}
.foot-col a{display:block;color:#cfc4f2;text-decoration:none;margin:5px 0}.foot-col a:hover{color:#fff}
.foot-col p{color:var(--mute);font-size:14px}
.foot-note{margin-top:26px;font-size:12.5px;color:#8f84b8;line-height:1.6}
@media(max-width:760px){.foot-in{grid-template-columns:1fr}}