*{margin:0;padding:0;box-sizing:border-box}
:root{--bg:#f5f6f8;--bg2:#eceef2;--card:#fff;--border:#d8dce5;--accent:#1b4f72;--accent2:#2980b9;--accent-light:rgba(27,79,114,0.06);--dark:#0f172a;--text:#1e293b;--text-dim:#5a6577;--text-muted:#8892a0;--green:#1a7a4c;--green-light:rgba(26,122,76,0.07);--red:#c0392b;--red-light:rgba(192,57,43,0.07);--blue:#2563eb;--blue-light:rgba(37,99,235,0.07);--purple:#6c3483;--purple-light:rgba(108,52,131,0.07);--orange:#FD5A13;--orange-light:rgba(253,90,19,0.07);--gold:#d4a843;--shadow:0 1px 4px rgba(0,0,0,0.04),0 4px 16px rgba(0,0,0,0.03);--shadow-lg:0 4px 8px rgba(0,0,0,0.06),0 14px 40px rgba(0,0,0,0.07);--radius:14px}
[data-theme="dark"]{--bg:#0c1018;--bg2:#141a24;--card:#1a2030;--border:#2a3040;--accent:#5dade2;--accent2:#85c1e9;--accent-light:rgba(93,173,226,0.1);--dark:#0c1018;--text:#e2e8f0;--text-dim:#8b95a5;--text-muted:#5a6370;--green:#52be80;--green-light:rgba(82,190,128,0.1);--red:#e74c3c;--red-light:rgba(231,76,60,0.1);--blue:#5dade2;--blue-light:rgba(93,173,226,0.1);--purple:#bb8fce;--purple-light:rgba(187,143,206,0.1);--orange:#ff8a4c;--orange-light:rgba(255,138,76,0.1);--shadow:0 1px 4px rgba(0,0,0,0.3),0 4px 16px rgba(0,0,0,0.2);--shadow-lg:0 4px 8px rgba(0,0,0,0.3),0 14px 40px rgba(0,0,0,0.25)}
html{scroll-behavior:smooth}body{font-family:'Plus Jakarta Sans',sans-serif;background:var(--bg);color:var(--text);line-height:1.65;-webkit-font-smoothing:antialiased}

/* NAV */
nav{background:var(--dark);position:sticky;top:0;z-index:100;border-bottom:2px solid var(--accent2)}[data-theme="dark"] nav{background:#060a10}
.nav-inner{max-width:1080px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:56px;padding:0 20px}
.nav-logo{font-family:'JetBrains Mono',monospace;font-weight:700;font-size:0.95rem;color:var(--accent2);text-decoration:none;display:flex;align-items:center;gap:8px}
.be-flag{display:inline-flex;border-radius:3px;overflow:hidden}.be-flag span{width:7px;height:14px;display:block}.fl-bk{background:#2D2926}.fl-yl{background:#FDDA24}.fl-rd{background:#EF3340}
.nav-right{display:flex;align-items:center;gap:6px}
.nav-links{display:flex;gap:2px}.nav-links a{color:rgba(255,255,255,0.5);text-decoration:none;font-size:0.75rem;font-weight:500;padding:5px 10px;border-radius:6px;transition:all 0.2s;cursor:pointer}.nav-links a:hover,.nav-links a.active{color:#fff;background:rgba(255,255,255,0.07)}
.theme-btn{background:none;border:none;cursor:pointer;font-size:1rem;padding:3px 5px;border-radius:6px;line-height:1}.theme-btn:hover{background:rgba(255,255,255,0.1)}
.burger{display:none;background:none;border:none;cursor:pointer;padding:6px;border-radius:6px;flex-direction:column;gap:4px;justify-content:center;align-items:center;width:36px;height:36px}
.burger:hover{background:rgba(255,255,255,0.1)}
.burger span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;transition:all 0.3s}
.burger.open span:nth-child(1){transform:rotate(45deg) translate(4px,4px)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:rotate(-45deg) translate(4px,-4px)}
.mobile-menu{display:none;position:absolute;top:56px;left:0;right:0;background:var(--dark);border-bottom:2px solid var(--accent2);padding:12px 20px;z-index:99;flex-direction:column;gap:4px}
.mobile-menu.show{display:flex}
.mobile-menu a{color:rgba(255,255,255,0.7);text-decoration:none;font-size:0.88rem;font-weight:500;padding:10px 14px;border-radius:8px}
.mobile-menu a:hover{color:#fff;background:rgba(255,255,255,0.07)}
[data-theme="dark"] .mobile-menu{background:#060a10}
@media(max-width:800px){.nav-links{display:none}.burger{display:flex}}

/* HERO */
.hero{background:linear-gradient(135deg,var(--dark) 0%,#1b2a4a 100%);color:#fff;padding:44px 20px 52px;text-align:center;position:relative;overflow:hidden}
[data-theme="dark"] .hero{background:linear-gradient(135deg,#060a10 0%,#0c1428 100%)}
.hero::before{content:'';position:absolute;top:-40%;right:-10%;width:500px;height:500px;background:radial-gradient(circle,rgba(41,128,185,0.15),transparent 70%);pointer-events:none}
.hero::after{content:'';position:absolute;bottom:-30%;left:-10%;width:400px;height:400px;background:radial-gradient(circle,rgba(26,122,76,0.1),transparent 70%);pointer-events:none}
.hero h1{font-size:clamp(1.4rem,4vw,2.4rem);font-weight:800;letter-spacing:-1px;margin-bottom:8px;line-height:1.15;position:relative}
.hero h1 .hl{color:var(--accent2)}
.hero p{color:rgba(255,255,255,0.45);font-size:clamp(0.82rem,1.8vw,0.95rem);max-width:560px;margin:0 auto;position:relative}
.hero-tags{display:flex;gap:6px;justify-content:center;margin-top:14px;flex-wrap:wrap;position:relative}
.hero-tags span{background:rgba(255,255,255,0.05);border:1px solid rgba(255,255,255,0.08);color:rgba(255,255,255,0.55);font-size:0.7rem;font-weight:500;padding:4px 12px;border-radius:14px}

/* LAYOUT */
.container{max-width:1080px;margin:0 auto;padding:0 20px}
.section{padding:40px 0}
.section-title{font-size:1.3rem;font-weight:800;letter-spacing:-0.5px;margin-bottom:6px}
.section-sub{color:var(--text-dim);font-size:0.88rem;margin-bottom:24px}

/* TABS */
.tabs{display:flex;gap:4px;margin-bottom:24px;flex-wrap:wrap}
.tab{background:var(--bg2);border:1px solid var(--border);border-radius:10px;padding:10px 18px;cursor:pointer;font-size:0.82rem;font-weight:600;color:var(--text-dim);transition:all 0.2s;text-align:center;flex:1;min-width:120px}
.tab:hover{border-color:var(--accent2);color:var(--accent2)}
.tab.active{background:var(--accent2);color:#fff;border-color:var(--accent2)}
.tab-icon{font-size:1.2rem;display:block;margin-bottom:3px}
.tab-panel{display:none}.tab-panel.active{display:block}

/* PANELS & FIELDS */
.panel{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.calc-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media(max-width:700px){.calc-grid{grid-template-columns:1fr}}
.field{margin-bottom:14px}.field:last-child{margin-bottom:0}
.field label{display:block;font-size:0.78rem;font-weight:600;color:var(--text-dim);margin-bottom:4px}
.field input,.field select{width:100%;background:var(--bg);border:1.5px solid var(--border);border-radius:8px;padding:10px 12px;font-family:inherit;font-size:0.9rem;color:var(--text);outline:none;transition:border-color 0.2s,box-shadow 0.2s}
.field input:focus,.field select:focus{border-color:var(--accent2);box-shadow:0 0 0 3px var(--accent-light)}
.field select{cursor:pointer;-webkit-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' fill='%235a6577' 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:30px}
[data-theme="dark"] .field select option{background:var(--card);color:var(--text)}
.field input::-webkit-outer-spin-button,.field input::-webkit-inner-spin-button{-webkit-appearance:none}.field input[type=number]{-moz-appearance:textfield}
.input-wrap{position:relative}.input-wrap input{padding-right:36px}.input-wrap .unit{position:absolute;right:12px;top:50%;transform:translateY(-50%);font-weight:600;color:var(--text-muted);font-size:0.8rem;pointer-events:none}
.field-hint{font-size:0.68rem;color:var(--text-muted);margin-top:3px}
.btn-calc{width:100%;background:var(--accent2);color:#fff;border:none;border-radius:8px;padding:12px;font-family:inherit;font-size:0.9rem;font-weight:700;cursor:pointer;transition:background 0.2s;margin-top:8px}
.btn-calc:hover{background:var(--accent)}

/* RESULTS */
.result-box{background:linear-gradient(135deg,var(--dark),#1b2a4a);color:#fff;border-radius:var(--radius);padding:24px;text-align:center;margin-top:20px}
[data-theme="dark"] .result-box{background:linear-gradient(135deg,#060a10,#0c1428)}
.result-box .rb-label{font-size:0.75rem;color:rgba(255,255,255,0.4);text-transform:uppercase;letter-spacing:1px;font-weight:600;margin-bottom:3px}
.result-box .rb-amount{font-family:'JetBrains Mono',monospace;font-size:clamp(1.6rem,4vw,2.2rem);font-weight:700;color:var(--accent2);letter-spacing:-1px}
.result-box .rb-sub{font-size:0.78rem;color:rgba(255,255,255,0.3);margin-top:3px}
.result-details{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:16px;text-align:left}
@media(max-width:480px){.result-details{grid-template-columns:1fr}}
.rd-item{background:rgba(255,255,255,0.04);border:1px solid rgba(255,255,255,0.06);border-radius:8px;padding:10px 12px}
.rd-item .rd-n{font-size:0.68rem;color:rgba(255,255,255,0.4)}
.rd-item .rd-v{font-family:'JetBrains Mono',monospace;font-size:0.88rem;font-weight:600;color:rgba(255,255,255,0.9)}

/* Region cards */
.region-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:16px}
@media(max-width:600px){.region-cards{grid-template-columns:1fr}}
.region-card{background:var(--bg);border:2px solid var(--border);border-radius:10px;padding:14px;text-align:center;cursor:pointer;transition:all 0.2s}
.region-card:hover{border-color:var(--accent2)}
.region-card.selected{border-color:var(--accent2);background:var(--accent-light)}
.region-card .rc-icon{font-size:1.4rem;margin-bottom:4px}
.region-card .rc-name{font-size:0.82rem;font-weight:700}
.region-card .rc-rate{font-size:0.7rem;color:var(--text-muted);margin-top:2px}

/* AD SLOT */
.ad-slot{background:var(--bg2);border:2px dashed var(--border);border-radius:var(--radius);padding:16px;text-align:center;color:var(--text-muted);font-size:0.7rem;margin:20px auto;max-width:728px}

/* INFO */
.info-section{max-width:780px;margin:0 auto}
.info-section h2{font-size:1.25rem;font-weight:800;margin-bottom:8px;letter-spacing:-0.3px}
.info-section h3{font-size:1rem;font-weight:700;margin:22px 0 6px}
.info-section p{font-size:0.9rem;color:var(--text-dim);margin-bottom:12px}
.highlight{background:var(--accent-light);border-left:3px solid var(--accent2);padding:12px 16px;border-radius:0 8px 8px 0;margin:16px 0;font-size:0.85rem;color:var(--text)}
.info-section table{width:100%;border-collapse:collapse;margin:14px 0;font-size:0.84rem}
.info-section th,.info-section td{padding:8px 12px;text-align:left;border-bottom:1px solid var(--border)}
.info-section th{font-weight:600;background:var(--bg2);font-size:0.72rem;text-transform:uppercase;letter-spacing:0.5px;color:var(--text-dim)}

/* FOOTER */
footer{background:var(--dark);color:rgba(255,255,255,0.35);padding:32px 20px;font-size:0.75rem;text-align:center;line-height:1.7}
[data-theme="dark"] footer{background:#060a10}
footer a{color:var(--accent2);text-decoration:none}

@keyframes fadeUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}
.panel,.result-box{animation:fadeUp 0.4s ease both}
.cookie-banner{display:none;position:fixed;bottom:0;left:0;right:0;background:#0f172a;color:#fff;padding:16px 20px;z-index:9999;box-shadow:0 -4px 20px rgba(0,0,0,0.2);font-size:0.82rem;line-height:1.5}.cookie-banner.show{display:block}.cookie-inner{max-width:1080px;margin:0 auto;display:flex;align-items:center;gap:16px;flex-wrap:wrap}.cookie-text{flex:1;min-width:250px;color:rgba(255,255,255,0.8)}.cookie-btns{display:flex;gap:8px;flex-shrink:0}.cookie-btn{padding:8px 20px;border-radius:6px;border:none;font-family:inherit;font-size:0.8rem;font-weight:600;cursor:pointer}.cookie-accept{background:#2980b9;color:#fff}.cookie-refuse{background:rgba(255,255,255,0.1);color:#fff;border:1px solid rgba(255,255,255,0.2)}