:root{color-scheme:dark;--bg:#0b1020;--panel:#10182b;--line:#263653;--blue:#55a7ff;--cyan:#5ce1d2;--text:#ecf3ff;--muted:#8795ae}*{box-sizing:border-box}html{min-height:100%;background:var(--bg)}body{margin:0;min-height:100vh;position:relative;overflow:hidden;background:radial-gradient(ellipse at 50% 46%,#121e36 0,#0b1020 55%);color:var(--text);font-family:Inter,Segoe UI,Arial,sans-serif}header{height:86px;padding:0 8%;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #26334a;position:relative;z-index:2}.brand{display:flex;align-items:center;gap:12px;color:#e9f2ff;text-decoration:none;font-size:13px;font-weight:700;letter-spacing:.13em}.brand-light{color:#8b9ab2;font-weight:400}.brand-icon{width:32px;height:32px;border:1px solid #438ed9;display:grid;place-items:center;color:var(--blue);font:italic 21px Georgia}.header-label{font-size:9px;letter-spacing:.2em;color:#73829d}.glow{position:absolute;border-radius:50%;filter:blur(95px);opacity:.12;pointer-events:none}.glow-a{width:340px;height:340px;background:#147ddd;top:13%;left:16%}.glow-b{width:240px;height:240px;background:#16b9b2;bottom:7%;right:15%}main{max-width:1100px;padding:75px 30px 30px;margin:auto;position:relative;z-index:1}.error-card{min-height:560px;position:relative;overflow:hidden;border:1px solid #324566;background:linear-gradient(135deg,#111a2d,#0e1627 70%);box-shadow:0 25px 90px #0005;padding:28px 34px}.error-meta{display:flex;justify-content:space-between;border-bottom:1px solid #2d3c57;padding-bottom:18px;font-size:9px;letter-spacing:.17em;color:#8292ac}.error-meta i{display:inline-block;width:6px;height:6px;background:var(--cyan);border-radius:50%;margin-right:8px;box-shadow:0 0 12px var(--cyan)}.error-content{position:relative;z-index:2;max-width:520px;padding:44px 0 30px 5%}.number{font-size:clamp(100px,17vw,190px);font-weight:200;letter-spacing:-.1em;line-height:.9;color:#e9f2ff}.number span{color:transparent;-webkit-text-stroke:1px var(--blue)}.eyebrow{font-size:10px;letter-spacing:.19em;color:var(--cyan);margin:34px 0 14px}.error-content h1{font-size:clamp(32px,4vw,48px);font-weight:400;line-height:1.15;margin:0 0 18px;letter-spacing:-.04em}.error-content h1 em{font-style:normal;color:#74baff}.message{max-width:400px;color:#9ba9bf;font-size:14px;line-height:1.8;margin:0 0 24px}.home{display:inline-flex;align-items:center;gap:35px;text-decoration:none;background:#183c65;color:#eaf4ff;padding:13px 17px;font-size:12px;border:1px solid #2b5c8e;transition:background .2s}.home:hover{background:#205182}.home span{color:var(--cyan);font-size:17px}.grid{position:absolute;right:7%;top:15%;width:37%;height:70%;opacity:.3;background-image:linear-gradient(#31507155 1px,transparent 1px),linear-gradient(90deg,#31507155 1px,transparent 1px);background-size:35px 35px;mask-image:linear-gradient(90deg,transparent,#000)}.orb{position:absolute;border:1px solid #4d94d066;border-radius:50%;right:17%;top:31%;width:190px;height:190px;box-shadow:inset 0 0 45px #2875b01a,0 0 50px #2875b014}.orb:before,.orb:after{content:"";position:absolute;inset:19px;border:1px solid #3975aa55;border-radius:50%}.orb:after{inset:43px;border-color:#55a7ff66}.orb-two{width:14px;height:14px;right:37%;top:27%;background:var(--cyan);border:0;box-shadow:0 0 20px var(--cyan)}.error-code{position:absolute;bottom:26px;left:34px;font:9px/1.8 Consolas,monospace;letter-spacing:.08em;color:#72839d}.error-code span{color:#53647e}.bottom-note{display:flex;justify-content:space-between;padding:20px 4px;color:#667792;font-size:9px;letter-spacing:.14em}footer{position:absolute;bottom:0;left:0;right:0;height:58px;border-top:1px solid #1c2940;padding:0 8%;display:flex;justify-content:space-between;align-items:center;color:#677690;font-size:9px;letter-spacing:.08em}.glow{animation:drift 12s ease-in-out infinite alternate}@keyframes drift{to{transform:translate(35px,-22px) scale(1.12)}}@media(max-width:650px){header{height:70px;padding:0 5%}.header-label{font-size:7px}.brand{font-size:11px}main{padding:35px 14px 75px}.error-card{padding:20px;min-height:560px}.error-content{padding:48px 4%}.number{font-size:120px}.error-content h1{font-size:35px}.message{font-size:13px}.orb{right:-24%;top:20%;opacity:.55}.grid{right:-20%;width:65%}.error-code{left:20px;bottom:18px}.bottom-note{font-size:7px;gap:10px}.bottom-note span:nth-child(2){display:none}footer{height:54px;padding:0 5%;font-size:7px}footer span:nth-child(2){display:none}}