:root{
  --ink:#08151e;--ink2:#102732;--paper:#f4f7f7;--white:#fff;--line:#cad7d9;
  --muted:#53676f;--teal:#00d2c6;--teal2:#bafff8;--orange:#ff9d42;--lime:#dcff6d;
  --blue:#4eb4ff;--danger:#d65050;--good:#15815f;--shadow:0 20px 56px rgba(8,21,30,.13);--radius:22px
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Arial,sans-serif;background:var(--paper);color:var(--ink);line-height:1.62}
a{color:#08767b;text-decoration-thickness:1px;text-underline-offset:3px}a:hover{color:#044e52}img,svg{max-width:100%}
button,input,select{font:inherit}.wrap{width:min(1160px,calc(100% - 34px));margin:auto}
.topline{background:#06151e;color:#b7d2d5;font-size:.78rem}.topline .wrap{display:flex;justify-content:space-between;gap:18px;padding:8px 0}
.site-header{position:sticky;top:0;z-index:50;background:rgba(244,247,247,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:22px}.brand{display:flex;align-items:center;gap:11px;color:var(--ink);text-decoration:none;font-weight:950;letter-spacing:-.02em}
.brand-mark{display:grid;place-items:center;width:39px;height:39px;border-radius:12px;background:var(--ink);color:var(--lime);font-size:.72rem;letter-spacing:.05em}
.navlinks{display:flex;gap:20px;align-items:center}.navlinks a{font-size:.88rem;font-weight:800;color:var(--ink);text-decoration:none}.navlinks a:hover{color:#08767b}
.menu-btn{display:none;padding:9px 12px;border:1px solid var(--line);background:white;border-radius:10px;font-weight:800}
.hero{background:linear-gradient(135deg,#06151e 0%,#0c2b36 65%,#103943 100%);color:white;overflow:hidden}
.hero-grid{min-height:670px;display:grid;grid-template-columns:1.03fr .97fr;gap:54px;align-items:center;padding:78px 0}
.hero h1{font-size:clamp(3.4rem,7vw,6.7rem);line-height:.91;letter-spacing:-.065em;margin:18px 0 22px;max-width:760px}.hero h1 span{color:var(--lime)}
.hero p{font-size:1.1rem;color:#c2d8db;max-width:650px}.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 11px;border-radius:999px;border:1px solid #39717a;background:#0f333e;color:#bffbf4;font-size:.72rem;font-weight:950;letter-spacing:.09em;text-transform:uppercase}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin:26px 0}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:12px 17px;border-radius:12px;border:1px solid transparent;text-decoration:none;font-weight:950;cursor:pointer}
.btn-primary{background:var(--lime);color:#07151d}.btn-primary:hover{background:#efffa6;color:#07151d}.btn-secondary{background:transparent;border-color:#4e7079;color:white}.btn-secondary:hover{background:#163841;color:white}.btn-dark{background:var(--ink);color:white}.btn-dark:hover{background:#17333f;color:white}.btn-light{background:white;border-color:var(--line);color:var(--ink)}.btn-light:hover{border-color:#6ba5a8;color:var(--ink)}
.trust-row{display:flex;flex-wrap:wrap;gap:16px;color:#9ebdc1;font-size:.8rem;font-weight:850}.trust-row span:before{content:"✓";color:var(--teal);margin-right:6px}
.radar-panel{position:relative;min-height:520px}.radar-card{position:absolute;inset:25px 0;border:1px solid #315663;border-radius:34px;background:radial-gradient(circle at 50% 48%,rgba(0,210,198,.13),transparent 47%),linear-gradient(180deg,#102c37,#091b24);box-shadow:0 35px 80px rgba(0,0,0,.32);overflow:hidden}
.radar-card:before,.radar-card:after{content:"";position:absolute;inset:50% auto auto 50%;transform:translate(-50%,-50%);border-radius:50%;border:1px solid rgba(87,203,200,.28)}
.radar-card:before{width:360px;height:360px;box-shadow:0 0 0 70px rgba(51,148,154,.08),0 0 0 140px rgba(51,148,154,.055)}.radar-card:after{width:4px;height:4px;background:var(--lime);box-shadow:105px -95px 0 var(--orange),-118px 44px 0 var(--blue),155px 75px 0 var(--teal)}
.radar-line{position:absolute;left:50%;top:50%;width:180px;height:2px;background:linear-gradient(90deg,var(--teal),transparent);transform-origin:left;animation:sweep 7s linear infinite}@keyframes sweep{to{transform:rotate(360deg)}}
.drone{position:absolute;left:50%;top:47%;transform:translate(-50%,-50%);width:220px;height:100px;z-index:3}.drone .body{position:absolute;left:77px;top:35px;width:66px;height:30px;border-radius:22px;background:var(--lime);box-shadow:0 0 30px rgba(220,255,109,.26)}.drone .arm{position:absolute;top:48px;width:90px;height:7px;background:#d7e5e7;border-radius:9px}.drone .arm.left{left:5px;transform:rotate(-12deg)}.drone .arm.right{right:5px;transform:rotate(12deg)}.drone .rotor{position:absolute;width:72px;height:9px;border:2px solid #9cded9;border-radius:50%;top:23px}.drone .rotor.a{left:0}.drone .rotor.b{right:0}.drone .cam{position:absolute;left:97px;top:65px;width:27px;height:21px;border-radius:5px;background:var(--orange)}
.panel-title{position:absolute;left:28px;right:28px;top:23px;display:flex;justify-content:space-between;font-size:.68rem;color:#8db4ba;font-weight:900;letter-spacing:.09em}.panel-data{position:absolute;left:28px;right:28px;bottom:27px;display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.panel-data div{padding:12px;border:1px solid #2a4d58;border-radius:12px;background:rgba(5,20,28,.7)}.panel-data span{display:block;color:#789ba2;font-size:.66rem;font-weight:900}.panel-data strong{font-size:1rem;color:white}
.section{padding:82px 0}.section-tight{padding:0 0 24px}.section-dark{background:var(--ink);color:white}.section-dark .lead{color:#b9ccd0}
h1,h2,h3{line-height:1.14;letter-spacing:-.035em}h2{font-size:clamp(2rem,4vw,3.6rem);margin:14px 0 15px}h3{font-size:1.18rem;margin:8px 0 8px}.lead{font-size:1.08rem;color:var(--muted);max-width:780px}
.need-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:30px}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:24px}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{background:white;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:0 8px 26px rgba(7,25,35,.045)}.card .num{display:block;font-size:.69rem;font-weight:950;letter-spacing:.08em;color:#0a7d7a;text-transform:uppercase}.card-link{display:inline-block;margin-top:8px;font-weight:950}.type-card{background:#102731;border-color:#31515b;color:white}.type-card p{color:#b8ced2}.type-card .num{color:#79e9df}.type-card .type{font-size:2rem;font-weight:1000;color:var(--lime);margin:7px 0}
.steps{counter-reset:step}.step{position:relative;display:grid;grid-template-columns:52px 1fr;gap:14px;padding:17px 0;border-bottom:1px solid var(--line)}.step:before{counter-increment:step;content:counter(step,decimal-leading-zero);display:grid;place-items:center;width:42px;height:42px;border-radius:12px;background:#e4fbf8;color:#07706d;font-weight:1000}.step:last-child{border-bottom:0}
.page-hero{background:#071923;color:white;padding:70px 0}.page-hero h1{font-size:clamp(2.5rem,5vw,4.8rem);margin:16px 0 12px}.page-hero p{font-size:1.1rem;color:#bcd0d3;max-width:800px}.breadcrumbs{font-size:.78rem;color:#91b1b6}.breadcrumbs a{color:#bff5ef}
.content-grid{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:30px;align-items:start}.article{background:white;border:1px solid var(--line);border-radius:var(--radius);padding:40px;box-shadow:var(--shadow)}.article h2{font-size:2rem;margin-top:38px}.article h2:first-child{margin-top:0}.article h3{margin-top:26px}.article ul,.article ol{padding-left:22px}.article li{margin:9px 0}.aside{display:grid;gap:16px;position:sticky;top:95px}
.callout{border-left:5px solid var(--teal);background:#eafffc;padding:18px 20px;border-radius:0 14px 14px 0;margin:24px 0}.callout.warning{border-color:var(--orange);background:#fff5e9}.callout.danger{border-color:var(--danger);background:#fff0f0}
.compare{width:100%;border-collapse:collapse;background:white}.compare th,.compare td{padding:14px;border:1px solid var(--line);text-align:left;vertical-align:top}.compare th{background:#eaf2f3}.table-wrap{overflow:auto}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.field label{display:block;font-weight:950;margin-bottom:6px}.field select,.field input{width:100%;padding:13px;border:1px solid var(--line);border-radius:11px;background:white}.saved-box{display:none;background:#e9fffc;border:1px solid #6fd8cf;border-radius:16px;padding:18px;margin:18px 0}.saved-box.show{display:block}
.diagram{background:#081b24;border-radius:20px;padding:20px;color:white;margin:22px 0}.diagram svg{display:block;width:100%;height:auto}.diagram figcaption{color:#a9c6ca;font-size:.82rem;margin-top:12px}
.quiz-shell{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:20px}.quiz-main,.quiz-side{background:white;border:1px solid var(--line);border-radius:20px;padding:26px}.quiz-side{height:max-content;position:sticky;top:95px}.progress-bar{height:9px;background:#e7eeee;border-radius:99px;overflow:hidden}.progress-bar span{display:block;height:100%;background:var(--teal);width:0}.question{font-size:1.28rem;font-weight:950;margin:26px 0 18px}.options{display:grid;gap:11px}.option{display:flex;gap:12px;align-items:flex-start;padding:15px;border:1px solid var(--line);border-radius:14px;cursor:pointer;background:white;text-align:left}.option:hover{border-color:#38aca7}.option.selected{border-color:#07837e;background:#e8fffc}.option.correct{border-color:#1b9b60;background:#eafff1}.option.wrong{border-color:#d64c4c;background:#fff0f0}.quiz-actions{display:flex;justify-content:space-between;gap:12px;margin-top:24px}.pill{display:inline-flex;padding:5px 9px;border-radius:999px;background:#e5f6f4;color:#066f6b;font-size:.76rem;font-weight:950}.result-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.metric{background:#f2f7f8;border-radius:14px;padding:16px}.metric strong{display:block;font-size:1.55rem}.question-map{display:grid;grid-template-columns:repeat(6,1fr);gap:7px;margin-top:15px}.question-map button{border:1px solid var(--line);background:white;border-radius:8px;padding:7px 2px;font-size:.73rem}.question-map button.done{background:#e1faf6;border-color:#65c8c0}.question-map button.flagged{box-shadow:inset 0 0 0 2px var(--orange)}.question-map button.current{background:var(--ink);color:white}
.footer{background:#06151d;color:#b8ced1;padding:54px 0 26px}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px}.footer h3{color:white}.footer a{color:#c2e4e3}.fineprint{border-top:1px solid #29414a;margin-top:36px;padding-top:20px;font-size:.82rem;color:#8fa8ad}.tag-row{display:flex;flex-wrap:wrap;gap:9px}.tag{padding:7px 10px;border:1px solid var(--line);border-radius:999px;background:white;font-size:.82rem;font-weight:850}.hidden{display:none!important}
@media(max-width:900px){.hero-grid,.content-grid,.quiz-shell,.grid-2{grid-template-columns:1fr}.hero-grid{padding:55px 0}.radar-panel{min-height:450px}.need-grid,.grid-3{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}.navlinks{display:none;position:absolute;top:72px;left:0;right:0;background:var(--paper);padding:20px 16px;border-bottom:1px solid var(--line);flex-direction:column;align-items:flex-start}.navlinks.open{display:flex}.menu-btn{display:block}.result-grid{grid-template-columns:1fr 1fr}.aside,.quiz-side{position:static}}
@media(max-width:600px){.wrap{width:min(100% - 22px,1160px)}.hero h1{font-size:3rem}.need-grid,.grid-3,.form-grid,.footer-grid{grid-template-columns:1fr}.radar-card{inset:10px 0}.section{padding:58px 0}.article{padding:24px 18px}.topline .wrap{display:block}.topline span:last-child{display:none}.quiz-main,.quiz-side{padding:16px}.result-grid{grid-template-columns:1fr}.quiz-actions{flex-wrap:wrap}.question-map{grid-template-columns:repeat(5,1fr)}}