*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root { --bg:#050709;--surface:#0e1219;--surface-2:#161c26;--surface-3:#1f2733;--border:#242d3b;--border-light:#334052;--text:#eaeff5;--text-dim:#94a3b8;--text-muted:#556275;--red:#ff4444;--red-soft:#ff6b6b;--red-dim:rgba(255,68,68,0.10);--red-glow:rgba(255,68,68,0.25);--green:#34d399;--green-dim:rgba(52,211,153,0.10);--orange:#f59e0b;--orange-dim:rgba(245,158,11,0.10);--blue:#60a5fa;--blue-dim:rgba(96,165,250,0.08);--radius:12px;--radius-sm:8px;--font:'DM Sans',-apple-system,sans-serif;--mono:'JetBrains Mono',monospace;--card-shadow:0 1px 2px rgba(0,0,0,0.3),0 0 0 1px var(--border); }
body { font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased; }
.container { max-width:640px;margin:0 auto;padding:20px 16px 60px; }
.nav { display:flex;align-items:center;justify-content:space-between;margin-bottom:24px; }
.nav a { color:var(--text-dim);text-decoration:none;font-size:14px;font-weight:500; }
.nav a:hover { color:var(--text); }
.nav .logo { font-weight:700;color:var(--text);font-size:15px; }
.badge { display:inline-flex;align-items:center;gap:6px;font-family:var(--mono);font-size:10px;text-transform:uppercase;letter-spacing:1.5px;color:var(--orange);background:var(--orange-dim);border:1px solid rgba(245,158,11,0.2);padding:5px 12px;border-radius:20px;margin-bottom:14px; }
h1 { font-size:clamp(26px,5vw,36px);font-weight:700;line-height:1.15;letter-spacing:-0.5px;margin-bottom:10px;color:#fff; }
h1 span { color:var(--red); }
.subtitle { color:var(--text-dim);font-size:15px;margin-bottom:28px; }
.card { background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--card-shadow);margin-bottom:16px;overflow:hidden; }
.card-header { padding:16px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:8px; }
.card-header h2 { font-size:14px;font-weight:600; }
.card-body { padding:18px 20px;display:grid;grid-template-columns:1fr 1fr;gap:14px; }
label { font-size:12px;font-weight:500;color:var(--text-dim);display:block;margin-bottom:5px; }
input,select { width:100%;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 14px;font-family:var(--font);font-size:14px;color:var(--text); }
input:focus,select:focus { outline:none;border-color:var(--blue);box-shadow:0 0 0 3px var(--blue-dim); }
select { appearance:none;cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%238899aa' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:32px; }
.input-wrap { position:relative; }
.input-wrap input { padding-right:48px; }
.input-wrap .suffix { position:absolute;right:14px;top:50%;transform:translateY(-50%);font-size:12px;color:var(--text-muted);font-family:var(--mono);pointer-events:none; }
.calc-btn { width:100%;padding:14px;background:var(--red);color:#fff;border:none;border-radius:var(--radius-sm);font-family:var(--font);font-size:15px;font-weight:700;cursor:pointer;transition:all 0.2s;margin-bottom:16px; }
.calc-btn:hover { background:var(--red-soft);transform:translateY(-1px);box-shadow:0 4px 20px var(--red-glow); }
.slider-section { padding:20px; }
.slider-label { display:flex;justify-content:space-between;align-items:baseline;margin-bottom:8px; }
.slider-label h3 { font-size:14px;font-weight:600; }
.slider-price { font-family:var(--mono);font-size:28px;font-weight:700;color:var(--red-soft); }
.slider { -webkit-appearance:none;appearance:none;width:100%;height:6px;border-radius:3px;background:linear-gradient(to right,var(--text-muted),var(--orange),var(--red));outline:none;cursor:pointer; }
.slider::-webkit-slider-thumb { -webkit-appearance:none;width:22px;height:22px;border-radius:50%;background:var(--text);box-shadow:0 0 10px rgba(0,0,0,0.5);cursor:grab; }
.slider::-moz-range-thumb { width:22px;height:22px;border-radius:50%;background:var(--text);box-shadow:0 0 10px rgba(0,0,0,0.5);cursor:grab;border:none; }
.slider-markers { display:flex;justify-content:space-between;margin-top:6px;font-family:var(--mono);font-size:10px;color:var(--text-muted); }
.result-box { text-align:center;padding:32px 20px; }
.result-amount { font-family:var(--mono);font-size:48px;font-weight:700;color:var(--red);line-height:1; }
.result-sub { font-size:14px;color:var(--text-dim);margin-top:6px; }
.result-monthly { font-family:var(--mono);font-size:20px;color:var(--red-soft);margin-top:4px; }
.result-detail { margin-top:20px;display:flex;justify-content:center;gap:24px; }
.result-detail-item { text-align:center; }
.result-detail-item .val { font-family:var(--mono);font-size:16px;font-weight:600;color:var(--text); }
.result-detail-item .lbl { font-size:11px;color:var(--text-muted); }
.hidden { display:none; }
.visible { display:block;animation:fadeUp 0.4s ease; }
@keyframes fadeUp { from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)} }
.cta-box { background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius);padding:24px;text-align:center;margin-top:24px; }
.cta-box p { font-size:14px;color:var(--text-dim);margin-bottom:14px; }
.cta-link { display:inline-block;background:var(--surface-3);border:1px solid var(--border);color:var(--text);padding:10px 24px;border-radius:var(--radius-sm);font-weight:600;font-size:14px;text-decoration:none;transition:all 0.2s; }
.cta-link:hover { border-color:var(--red);color:var(--red); }
.footer { text-align:center;margin-top:40px;padding-top:24px;border-top:1px solid var(--border);font-size:11px;color:var(--text-muted); }
.footer a { color:var(--text-dim);text-decoration:none; }
@media(max-width:500px){ .card-body{grid-template-columns:1fr;} .result-amount{font-size:36px;} .result-detail{gap:16px;} }