:root{color-scheme:dark;--bg:#07111a;--panel:#101e29;--panel2:#152735;--line:#294052;--text:#eef5f7;--muted:#93a9b5;--cyan:#65d8ef;--amber:#ffbd4a;--red:#ff655d;--green:#55d69e;--safe:env(safe-area-inset-bottom,0px);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at 80% -10%,#17394a 0,transparent 35%),var(--bg);color:var(--text);min-height:100vh}.topbar{height:68px;padding:10px max(18px,calc((100vw - 760px)/2));display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #203442;background:#08131deb;backdrop-filter:blur(12px);position:sticky;top:0;z-index:5}.brand{display:flex;gap:10px;align-items:center;letter-spacing:.08em}.brand-mark{display:grid;place-items:center;width:38px;height:38px;border:1px solid var(--cyan);border-radius:10px;color:var(--cyan)}.brand small{display:block;color:var(--muted);font-size:.62rem;margin-top:2px}main{max-width:760px;margin:auto;padding:20px 16px calc(112px + var(--safe))}.page{display:none}.page.active{display:block}.status-strip{border-radius:10px;padding:11px 14px;margin-bottom:20px;display:flex;flex-direction:column;gap:2px;font-size:.78rem}.status-strip.danger{background:#3d1718;border:1px solid #74302f;color:#ffc4c0}.status-strip span{opacity:.8}.hero{display:flex;align-items:flex-end;justify-content:space-between;gap:12px;margin:12px 2px 20px}.eyebrow{color:var(--cyan);font-size:.74rem;letter-spacing:.1em;text-transform:uppercase;margin:0 0 5px}.hero h1{font-size:2rem;line-height:1;margin:0;letter-spacing:-.035em}.badge{border-radius:999px;padding:7px 10px;font-size:.67rem;font-weight:800;letter-spacing:.06em;white-space:nowrap}.badge.bad{background:#421c1d;color:#ffaaa4}.badge.good{background:#123b31;color:#79e5b7}.panel{background:linear-gradient(145deg,var(--panel2),var(--panel));border:1px solid var(--line);border-radius:16px;padding:18px;margin:0 0 14px;box-shadow:0 16px 40px #0002}.panel h2{font-size:.78rem;letter-spacing:.11em;text-transform:uppercase;color:#b8cbd4;margin:0 0 16px}.grid{display:grid;gap:14px}.grid.two{grid-template-columns:1fr 1fr}.wide{grid-column:1/-1}label{font-size:.76rem;color:var(--muted);font-weight:650;letter-spacing:.02em;position:relative}.unit{float:right;color:#6e8a99}input,select{width:100%;height:50px;margin-top:7px;padding:0 13px;border:1px solid #375063;border-radius:10px;background:#091722;color:var(--text);font:700 1.05rem/1 inherit;outline:none}input:focus,select:focus{border-color:var(--cyan);box-shadow:0 0 0 3px #65d8ef22}.primary,.secondary,.ghost{border:0;border-radius:12px;min-height:48px;padding:0 18px;font-weight:800;cursor:pointer}.primary{width:100%;background:var(--cyan);color:#06202a;font-size:1rem;margin:2px 0 22px}.secondary{background:#d8f5fa;color:#09212b}.ghost{background:#172a37;color:#dcebf0;border:1px solid #334c5c}.results{display:grid;grid-template-columns:1fr 1fr;gap:12px}.instrument{background:#071018;border:1px solid #314a5b;border-radius:14px;padding:16px;position:relative;overflow:hidden}.instrument:before{content:"";position:absolute;inset:0;border-top:2px solid var(--cyan);opacity:.6}.instrument span,.distance span{display:block;color:var(--muted);font-size:.65rem;font-weight:800;letter-spacing:.09em}.instrument strong{font-variant-numeric:tabular-nums;font-size:1.8rem;display:inline-block;margin-top:8px}.instrument small{color:var(--muted);margin-left:4px}.distance{grid-column:1/-1;background:linear-gradient(130deg,#102c3b,#11212d);border:1px solid #31536a;border-radius:16px;padding:18px;display:grid;grid-template-columns:1fr 1fr;gap:20px}.distance div+div{border-left:1px solid #355061;padding-left:20px}.distance strong{display:block;font-size:1.25rem;margin-top:10px}.distance div:first-child strong{color:var(--cyan)}.distance div:last-child strong{color:var(--amber)}.compact,.warnings,.disclaimer{grid-column:1/-1}.factor-list,.documentation ul{padding-left:20px;margin:0;color:#c4d3da;font-size:.86rem;line-height:1.55}.warnings{display:flex;flex-direction:column;gap:8px}.warning{background:#372817;border:1px solid #6c5126;color:#ffd995;padding:12px;border-radius:10px;font-size:.82rem}.warning.danger{background:#3b191b;border-color:#713135;color:#ffc1bd}.disclaimer{border-left:3px solid var(--amber);background:#271f15;border-radius:4px 12px 12px 4px;padding:15px;margin-top:16px;color:#ffe2aa}.disclaimer p{margin:5px 0 0;color:#d5c49f;font-size:.78rem;line-height:1.45}.dataset-info{padding:13px;background:#091722;border:1px solid #30495a;border-radius:10px;margin-bottom:12px;font-size:.85rem;line-height:1.55}.hint{color:var(--muted);font-size:.8rem;line-height:1.5}.file-drop{display:grid;place-items:center;border:1px dashed #527184;border-radius:12px;height:72px;color:var(--cyan);cursor:pointer;margin:15px 0}.file-drop input{display:none}.verify-check{display:flex;gap:10px;align-items:flex-start;line-height:1.45;margin:14px 0}.verify-check input{width:22px;height:22px;flex:0 0 auto;margin:0}.button-row{display:flex;gap:10px;flex-wrap:wrap}.danger-text{color:#ffaaa4}.message{margin-top:12px;font-size:.82rem;color:var(--amber)}.text-link{display:inline-block;margin-top:14px;color:var(--cyan);font-weight:700;font-size:.85rem}.bottom-nav{position:fixed;z-index:6;bottom:0;left:0;right:0;height:calc(80px + var(--safe));padding:7px max(8px,calc((100vw - 760px)/2)) var(--safe);background:#09141df2;border-top:1px solid #263d4d;backdrop-filter:blur(16px);display:grid;grid-template-columns:1fr 1fr;gap:4px}.bottom-nav button{background:transparent;border:0;color:#78909d;border-radius:10px;padding:7px 4px}.bottom-nav button b{display:block;font-size:.65rem;letter-spacing:.04em}.bottom-nav button small{display:block;font-size:.54rem;margin-top:4px;line-height:1.2}.bottom-nav button.active{color:var(--cyan);background:#142a37}.context-back{border:1px solid #355263;border-radius:10px;background:#0d202b;color:#c9e2ec;min-height:44px;padding:0 14px;margin:0 0 14px;font-weight:800;cursor:pointer}.return-to-briefing{margin-top:14px}.documentation li+li{margin-top:8px}@media(max-width:430px){main{padding-left:12px;padding-right:12px}.hero h1{font-size:1.75rem}.grid.two{gap:11px}.panel{padding:15px}.distance{gap:12px}.distance div+div{padding-left:12px}.distance strong{font-size:1.05rem}.badge{font-size:.58rem}.bottom-nav button small{display:none}.bottom-nav button b{font-size:.59rem}}