:root{
  --bg:#050816;--bg2:#0a1024;--card:rgba(18,27,55,.72);--line:rgba(255,255,255,.09);--text:#f5f7ff;--muted:#9ca8c9;--accent:#7c5cff;--accent2:#41d7ff;--max:1180px;--radius:24px;
}
*{box-sizing:border-box} html{scroll-behavior:smooth} body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:radial-gradient(circle at 20% 0%,#152456 0,transparent 30%),radial-gradient(circle at 90% 10%,#1e1545 0,transparent 28%),var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden} a{color:inherit;text-decoration:none} img{max-width:100%}
body:before{content:"";position:fixed;inset:0;pointer-events:none;opacity:.35;background-image:radial-gradient(#fff 1px,transparent 1px),radial-gradient(#fff 1px,transparent 1px);background-size:120px 120px,190px 190px;background-position:10px 20px,90px 120px}
.container{width:min(var(--max),calc(100% - 40px));margin:auto}.topbar{position:sticky;top:0;z-index:20;backdrop-filter:blur(18px);background:rgba(5,8,22,.62);border-bottom:1px solid var(--line)}.nav{height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:.02em}.brand-mark{width:38px;height:38px;border-radius:50%;background:radial-gradient(circle at 30% 30%,#dff8ff,#78d6ff 35%,#4d2cff 70%,#180a47);box-shadow:0 0 30px rgba(91,119,255,.55)}.links{display:flex;gap:24px;color:var(--muted);font-size:.95rem}.links a:hover,.links a.active{color:#fff}.menu{display:none;background:none;border:1px solid var(--line);color:#fff;border-radius:12px;padding:9px 11px}
.hero{padding:90px 0 55px}.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;align-items:center;gap:50px}.eyebrow{text-transform:uppercase;letter-spacing:.16em;color:var(--accent2);font-size:.75rem;font-weight:800}.hero h1{font-size:clamp(3rem,7vw,6.3rem);line-height:.95;margin:16px 0 24px;letter-spacing:-.05em}.hero p{font-size:1.12rem;color:var(--muted);max-width:640px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.btn{padding:13px 18px;border-radius:14px;border:1px solid var(--line);background:#121936;color:#fff;font-weight:700}.btn.primary{background:linear-gradient(135deg,var(--accent),#4d8dff);box-shadow:0 12px 35px rgba(95,77,255,.3)}.btn:hover{transform:translateY(-1px)}
.orbit{position:relative;min-height:430px;display:grid;place-items:center}.sun{width:180px;height:180px;border-radius:50%;background:radial-gradient(circle at 35% 30%,#fff7cf,#ffd56b 32%,#ff8c34 65%,#d9482b);box-shadow:0 0 80px rgba(255,170,75,.65),0 0 180px rgba(255,112,56,.2)}.ring{position:absolute;border:1px solid rgba(164,195,255,.18);border-radius:50%;width:290px;height:290px;animation:spin 18s linear infinite}.ring.r2{width:390px;height:390px;animation-duration:28s}.planet-dot{position:absolute;width:28px;height:28px;border-radius:50%;background:linear-gradient(135deg,#71c5ff,#445eff);top:16px;right:86px;box-shadow:0 0 22px rgba(65,215,255,.8)}.planet-dot.p2{width:18px;height:18px;top:auto;bottom:55px;left:105px;background:linear-gradient(135deg,#ffd39c,#c86135)}@keyframes spin{to{transform:rotate(360deg)}}
.section{padding:74px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:28px}.section h2{font-size:clamp(2rem,4vw,3.5rem);margin:0;letter-spacing:-.04em}.muted{color:var(--muted)}.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.card{background:linear-gradient(180deg,rgba(27,39,77,.72),rgba(13,19,42,.76));border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 20px 60px rgba(0,0,0,.22);transition:.25s}.card:hover{transform:translateY(-5px);border-color:rgba(124,92,255,.45)}.planet-thumb{height:170px;border-radius:18px;display:grid;place-items:center;background:radial-gradient(circle at 50% 45%,rgba(255,255,255,.08),transparent 60%),#0a1022;overflow:hidden}.planet{width:110px;height:110px;border-radius:50%;box-shadow:inset -18px -16px 25px rgba(0,0,0,.35),0 0 45px rgba(255,255,255,.08)}.mercury{background:radial-gradient(circle at 30% 30%,#cfc6ba,#7c7772 45%,#403e42)}.venus{background:radial-gradient(circle at 35% 30%,#ffe0a4,#c98f44 45%,#7d4d26)}.earth{background:radial-gradient(circle at 38% 30%,#86d7ff,#286cbd 45%,#112d74)}.mars{background:radial-gradient(circle at 35% 30%,#ffae8e,#b94c39 45%,#5a1c22)}.jupiter{background:linear-gradient(#d7b27f 0 12%,#8e664b 12% 20%,#e2c597 20% 32%,#9c7350 32% 43%,#d7b07c 43% 56%,#8f6246 56% 67%,#d0a87c 67% 83%,#8c5b41 83%)}.saturn{background:radial-gradient(circle at 30% 30%,#f3deb2,#b99d67 55%,#70583b)}.uranus{background:radial-gradient(circle at 40% 32%,#b9f5ff,#59b9ce 65%,#3a7684)}.neptune{background:radial-gradient(circle at 40% 30%,#8eb0ff,#3b5de4 55%,#192d85)}
.card h3{margin:17px 0 7px}.tag{display:inline-flex;align-items:center;padding:7px 10px;border:1px solid var(--line);border-radius:999px;color:#cbd4f0;font-size:.78rem}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.stat{padding:24px;border-radius:18px;background:rgba(17,25,52,.64);border:1px solid var(--line)}.stat strong{display:block;font-size:2rem}.banner{padding:30px;border-radius:28px;background:linear-gradient(120deg,rgba(124,92,255,.2),rgba(65,215,255,.1));border:1px solid rgba(124,92,255,.28)}
.page-head{padding:72px 0 30px}.page-head h1{font-size:clamp(2.6rem,5vw,4.7rem);letter-spacing:-.05em;margin:14px 0}.detail{display:grid;grid-template-columns:.85fr 1.15fr;gap:28px;align-items:start}.large-planet{min-height:420px;border-radius:30px;display:grid;place-items:center;background:radial-gradient(circle at center,rgba(123,92,255,.14),transparent 55%),#091126;border:1px solid var(--line)}.large-planet .planet{width:245px;height:245px;box-shadow:inset -38px -30px 45px rgba(0,0,0,.36),0 0 80px rgba(120,134,255,.18)}.facts{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:20px}.fact{padding:18px;border-radius:16px;background:#0b1227;border:1px solid var(--line)}.fact span{display:block;color:var(--muted);font-size:.82rem}.timeline{position:relative;padding-left:28px}.timeline:before{content:"";position:absolute;left:7px;top:0;bottom:0;width:1px;background:var(--line)}.event{position:relative;padding:0 0 28px}.event:before{content:"";position:absolute;left:-25px;top:7px;width:9px;height:9px;border-radius:50%;background:var(--accent2);box-shadow:0 0 18px var(--accent2)}.event h3{margin:0 0 6px}.footer{padding:45px 0;border-top:1px solid var(--line);margin-top:60px;color:var(--muted)}
@media(max-width:980px){.hero-grid,.detail{grid-template-columns:1fr}.grid{grid-template-columns:repeat(2,1fr)}.orbit{min-height:340px}.links{display:none}.menu{display:block}}@media(max-width:620px){.container{width:min(var(--max),calc(100% - 24px))}.nav{height:68px}.hero{padding-top:62px}.grid,.stats,.facts{grid-template-columns:1fr}.hero h1{font-size:3.5rem}.section{padding:52px 0}}