/* gravitation.css */
@import url('https://fonts.googleapis.com/css2?family=Libre+Baskerville:ital,wght@0,400;0,700;1,400&family=Roboto+Condensed:wght@300;400;700&family=Courier+Prime:wght@400;700&display=swap');
:root{--space:#000000;--cosmos:#020108;--deep:#050210;--surface:#0a0418;--grav:#c08000;--grav-dim:rgba(192,128,0,0.08);--grav-border:rgba(192,128,0,0.18);--orbit:#8060d0;--orbit-dim:rgba(128,96,208,0.08);--text:#5040a0;--text-bright:#c0a040;--text-dim:#180c40;--border:rgba(192,128,0,0.15);--white:#fff4d0;}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
body{font-family:'Roboto Condensed',sans-serif;background:var(--space);color:var(--text);min-height:100vh;overflow-x:hidden;}
#grav-canvas{position:fixed;inset:0;z-index:0;pointer-events:none;}
.wrap{position:relative;z-index:2;max-width:1040px;margin:0 auto;padding:0 28px 90px;}
.hero{padding:68px 0 52px;display:grid;grid-template-columns:1fr 300px;gap:44px;align-items:center;border-bottom:1px solid var(--border);margin-bottom:56px;}
.hero-tag{font-family:'Courier Prime',monospace;font-size:0.58rem;letter-spacing:4px;text-transform:uppercase;color:var(--grav);opacity:0.55;margin-bottom:14px;}
.hero h1{font-family:'Libre Baskerville',serif;font-size:clamp(3.5rem,10vw,7rem);font-weight:700;line-height:0.88;color:var(--white);letter-spacing:-1px;}
.hero h1 em{display:block;font-size:0.22em;font-style:italic;font-weight:400;letter-spacing:2px;color:var(--text-dim);margin-top:12px;font-family:'Courier Prime',monospace;text-transform:uppercase;}
.hero-desc{font-size:0.95rem;line-height:1.87;color:var(--text);font-weight:300;margin-top:18px;}
.orbit-wrap{background:var(--cosmos);border:1px solid var(--grav-border);border-radius:8px;padding:16px;text-align:center;box-shadow:0 0 20px var(--grav-dim);}
#orbit-canvas{display:block;margin:0 auto;}
.orbit-cap{font-family:'Courier Prime',monospace;font-size:0.52rem;color:rgba(192,128,0,0.3);letter-spacing:2px;text-transform:uppercase;margin-top:8px;}
/* Laws */
.laws-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:10px;margin-bottom:56px;}
.lc{background:var(--surface);border:1px solid var(--border);border-left:3px solid var(--grav);padding:20px;transition:background 0.2s;}.lc:hover{background:var(--grav-dim);}
.lc h3{font-family:'Libre Baskerville',serif;font-size:0.95rem;color:var(--white);margin-bottom:5px;}
.lc-eq{font-family:'Courier Prime',monospace;font-size:0.82rem;color:var(--grav);padding:6px 10px;background:var(--grav-dim);border-radius:2px;margin-bottom:8px;}
.lc p{font-size:0.8rem;color:var(--text);margin:0;line-height:1.55;}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(145px,1fr));border:1px solid var(--border);overflow:hidden;margin-bottom:56px;}
.stat{padding:16px 12px;background:var(--cosmos);border-right:1px solid var(--border);transition:background 0.2s;}.stat:last-child{border-right:none;}.stat:hover{background:var(--grav-dim);}
.s-label{font-family:'Courier Prime',monospace;font-size:0.52rem;letter-spacing:2px;text-transform:uppercase;color:var(--grav);opacity:0.5;margin-bottom:6px;}
.s-value{font-size:1rem;font-weight:700;color:var(--white);line-height:1.1;}
.s-unit{font-size:0.6rem;color:var(--text-dim);}
.section{margin-bottom:52px;opacity:0;transform:translateY(16px);transition:opacity 0.65s,transform 0.65s;}.section.visible{opacity:1;transform:none;}
.sh{display:flex;align-items:baseline;gap:14px;margin-bottom:18px;padding-bottom:12px;border-bottom:1px solid var(--border);}
.sn{font-family:'Courier Prime',monospace;font-size:0.55rem;letter-spacing:3px;color:var(--grav);opacity:0.4;}
.section h2{font-family:'Libre Baskerville',serif;font-size:1.5rem;font-weight:700;color:var(--white);}
p{font-size:0.95rem;line-height:1.87;color:var(--text);font-weight:300;margin-bottom:14px;}
strong{color:var(--text-bright);font-weight:700;}
.kepler-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:18px;}
.kc{background:var(--surface);border:1px solid var(--border);padding:18px;text-align:center;transition:background 0.2s;}.kc:hover{background:var(--grav-dim);}
.kc-num{font-family:'Libre Baskerville',serif;font-size:2rem;font-weight:700;color:rgba(192,128,0,0.4);display:block;margin-bottom:6px;}
.kc h3{font-size:0.82rem;font-weight:700;color:var(--white);margin-bottom:6px;}
.kc-eq{font-family:'Courier Prime',monospace;font-size:0.75rem;color:var(--grav);padding:5px 8px;background:var(--grav-dim);border-radius:2px;margin-bottom:8px;}
.kc p{font-size:0.78rem;text-align:left;margin:0;line-height:1.55;}
.bh-box{background:var(--surface);border:1px solid var(--grav-border);border-left:3px solid var(--grav);padding:24px 26px;margin-top:18px;}
.bh-box h3{font-size:0.9rem;font-weight:700;color:var(--grav);text-transform:uppercase;letter-spacing:1px;margin-bottom:12px;}
.bh-box p{margin:0 0 12px;}.bh-box p:last-child{margin:0;}
.apps-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:10px;margin-top:18px;}
.ap{background:var(--surface);border:1px solid var(--border);border-top:2px solid var(--grav);padding:16px;transition:background 0.2s;}.ap:hover{background:var(--grav-dim);}
.ap h3{font-size:0.82rem;font-weight:700;color:var(--white);margin-bottom:5px;}
.ap p{font-size:0.78rem;margin:0;line-height:1.55;}
.footer-band{margin-top:70px;border-top:1px solid var(--border);padding-top:20px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;}
.footer-band span{font-family:'Courier Prime',monospace;font-size:0.5rem;letter-spacing:2px;color:var(--text-dim);text-transform:uppercase;}
@media(max-width:640px){.hero{grid-template-columns:1fr;} .orbit-wrap{display:none;} .kepler-grid{grid-template-columns:1fr;}}