:root{
  --bg:#07111f; --bg2:#0d1a2d; --surface:#101f35; --surface2:#132842;
  --gold:#f6c74a; --gold2:#ffe39b; --text:#f7f8fb; --muted:#c8d3e3; --dim:#8ea0b8;
  --border:rgba(255,255,255,.12); --shadow:0 20px 60px rgba(0,0,0,.35);
  --max:1220px; --radius:24px; --font:Inter,Segoe UI,Tahoma,Arial,sans-serif;
}
*{box-sizing:border-box} html{scroll-behavior:smooth} body{margin:0;font-family:var(--font);background:radial-gradient(circle at 20% 0%,rgba(246,199,74,.14),transparent 30%),var(--bg);color:var(--text);line-height:1.7} a{color:var(--gold);text-decoration:none} a:hover{text-decoration:underline}.container{max-width:var(--max);margin:auto;padding:0 22px}.skip-link{position:absolute;left:-999px}.skip-link:focus{left:20px;top:20px;background:#fff;color:#000;padding:10px;z-index:99}.site-header{position:sticky;top:0;z-index:50;background:rgba(7,17,31,.88);backdrop-filter:blur(18px);border-bottom:1px solid var(--border)}.nav-wrap{display:flex;align-items:center;justify-content:space-between;min-height:74px}.logo{display:flex;gap:10px;align-items:center;color:#fff;font-weight:800;font-size:1.3rem}.logo span:not(.logo-mark){color:var(--gold)}.logo-mark{display:grid;place-items:center;width:36px;height:36px;border-radius:50%;background:linear-gradient(145deg,var(--gold2),var(--gold));color:#07111f;font-weight:900}.menu{display:flex;gap:14px;list-style:none;margin:0;padding:0;align-items:center}.menu a{color:var(--muted);font-weight:650;font-size:.92rem;padding:10px 8px;border-radius:999px}.menu a:hover{background:rgba(255,255,255,.08);color:#fff;text-decoration:none}.menu-toggle,.menu-icon{display:none}
.hero{padding:92px 22px 72px;position:relative;overflow:hidden;background:radial-gradient(circle at 50% 20%,rgba(246,199,74,.16),transparent 35%)}.hero-grid{max-width:var(--max);margin:auto;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}.eyebrow{display:inline-flex;gap:8px;align-items:center;color:var(--gold2);border:1px solid var(--border);background:rgba(255,255,255,.05);padding:8px 14px;border-radius:999px;font-size:.9rem;font-weight:700}.hero h1,.page-hero h1{font-size:clamp(2.35rem,5vw,4.6rem);line-height:1.05;margin:18px 0;color:#fff;letter-spacing:-.04em}.hero p,.page-hero p{font-size:1.18rem;color:var(--muted);max-width:760px}.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:26px}.btn,.cta-button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:999px;padding:14px 22px;background:linear-gradient(145deg,var(--gold2),var(--gold));color:#07111f;font-weight:850;cursor:pointer;box-shadow:0 12px 30px rgba(246,199,74,.18)}.btn.secondary{background:transparent;color:#fff;border:1px solid var(--border);box-shadow:none}.coin-tool{background:linear-gradient(180deg,rgba(255,255,255,.08),rgba(255,255,255,.03));border:1px solid var(--border);border-radius:34px;padding:34px;box-shadow:var(--shadow);text-align:center}.coin-container{margin:22px auto;width:230px;height:230px;perspective:900px}.coin{width:100%;height:100%;border-radius:50%;background:radial-gradient(circle at 35% 25%,#fff4bd,#f6c74a 42%,#b88413 100%);display:flex;align-items:center;justify-content:center;color:#07111f;font-size:2.5rem;font-weight:950;box-shadow:inset -14px -20px 35px rgba(0,0,0,.22),0 25px 55px rgba(0,0,0,.35);transition:transform .9s ease;transform-style:preserve-3d}.coin.flip{transform:rotateY(1800deg)}#result-text{color:var(--gold2);font-weight:850}.section{padding:86px 22px}.section.light{background:#f7f8fb;color:#122033}.section.dark{background:linear-gradient(180deg,var(--bg2),var(--bg));color:var(--text)}.section h2{font-size:clamp(2rem,3vw,3rem);line-height:1.15;margin:0 auto 18px;max-width:900px;text-align:center;letter-spacing:-.03em}.section-intro{max-width:850px;margin:0 auto 38px;text-align:center;color:var(--muted)}.light .section-intro{color:#46546a}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px;max-width:var(--max);margin:0 auto}.card{display:block;background:linear-gradient(180deg,rgba(255,255,255,.08),rgba(255,255,255,.04));border:1px solid var(--border);border-radius:var(--radius);padding:24px;color:var(--text);box-shadow:0 12px 35px rgba(0,0,0,.18);transition:.2s}.light .card{background:#fff;color:#122033;border-color:rgba(0,0,0,.08)}.card:hover{transform:translateY(-6px);text-decoration:none;box-shadow:0 22px 60px rgba(0,0,0,.28)}.card h3{margin:.4rem 0;color:inherit;font-size:1.35rem}.card p{color:var(--muted);margin:0}.light .card p{color:#4b5d72}.icon{width:44px;height:44px;display:grid;place-items:center;border-radius:14px;background:rgba(246,199,74,.14);border:1px solid rgba(246,199,74,.25);color:var(--gold);font-weight:900}.page-hero{padding:70px 22px 44px;background:radial-gradient(circle at 35% 10%,rgba(246,199,74,.12),transparent 36%)}.page-hero-inner{max-width:var(--max);margin:auto}.breadcrumb{max-width:var(--max);margin:22px auto 0;padding:0 22px;color:var(--dim);font-size:.94rem}.breadcrumb a{color:var(--gold2)}.layout{max-width:var(--max);margin:auto;display:grid;grid-template-columns:280px 1fr;gap:34px;padding:40px 22px 90px}.toc{position:sticky;top:96px;align-self:start;background:rgba(255,255,255,.06);border:1px solid var(--border);border-radius:22px;padding:22px}.toc h3{margin-top:0}.toc a{display:block;color:var(--muted);padding:7px 0}.content-panel{background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.035));border:1px solid var(--border);border-radius:28px;padding:34px;box-shadow:var(--shadow)}.content-panel h2{font-size:2rem;margin-top:0;color:#fff}.content-panel h3{font-size:1.45rem;color:var(--gold2);margin-top:32px}.content-panel p,.content-panel li{color:var(--muted);font-size:1.05rem}.note-box,.takeaway{padding:20px;border-radius:20px;background:rgba(246,199,74,.11);border:1px solid rgba(246,199,74,.25);margin:24px 0;color:#fff}.comparison-table{width:100%;border-collapse:collapse;margin:24px 0;overflow:hidden;border-radius:18px}.comparison-table th,.comparison-table td{border:1px solid var(--border);padding:13px;text-align:left}.comparison-table th{background:rgba(246,199,74,.16);color:#fff}.related-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:28px}.mini-card{border:1px solid var(--border);border-radius:18px;padding:18px;background:rgba(255,255,255,.05)}.search-form{max-width:900px;margin:0 auto 28px;display:flex;gap:10px}.search-form input{flex:1;border-radius:999px;border:1px solid var(--border);padding:14px 18px;background:#fff;color:#111;font-size:1rem}.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;border:0;clip:rect(0 0 0 0);overflow:hidden;white-space:nowrap}.site-footer{background:#050c16;border-top:1px solid var(--border);padding:54px 22px;color:var(--muted)}.footer-container{max-width:var(--max);margin:auto}.footer-columns{display:grid;grid-template-columns:1.35fr 1fr 1fr 1fr;gap:28px}.footer-col h4{color:#fff;margin-top:0}.footer-col ul{margin:0;padding:0;list-style:none}.footer-col li{margin:9px 0}.footer-col a{color:var(--muted)}.footer-bottom{border-top:1px solid var(--border);margin-top:34px;padding-top:18px;color:var(--dim);font-size:.9rem}
@media(max-width:980px){.hero-grid,.layout{grid-template-columns:1fr}.toc{position:static}.footer-columns{grid-template-columns:1fr 1fr}.menu{position:absolute;display:none;left:0;right:0;top:74px;flex-direction:column;background:#07111f;padding:16px}.menu-icon{display:block;cursor:pointer;width:34px;height:34px;position:relative}.menu-icon span,.menu-icon span:before,.menu-icon span:after{content:"";position:absolute;left:4px;width:26px;height:3px;background:#fff;border-radius:3px;top:16px}.menu-icon span:before{top:-8px}.menu-icon span:after{top:8px}.menu-toggle:checked+.menu-icon+.menu{display:flex}}
@media(max-width:640px){.hero{padding-top:58px}.coin-container{width:190px;height:190px}.footer-columns{grid-template-columns:1fr}.content-panel{padding:22px}.search-form{flex-direction:column}}
.contact-form{display:grid;gap:12px}.contact-form label{font-weight:800;color:#fff}.contact-form input,.contact-form textarea{width:100%;border:1px solid var(--border);border-radius:14px;background:rgba(255,255,255,.08);color:#fff;padding:13px 15px;font-size:1rem}.contact-form input:focus,.contact-form textarea:focus{outline:2px solid var(--gold);outline-offset:2px}