:root{
  --bg:#061724;--bg2:#081e2e;--panel:#0b2334;--panel2:#0d2b40;--panel3:#102f46;
  --line:#1d4259;--line2:#285871;--text:#eef7fb;--muted:#8faabd;--soft:#bdd0dc;
  --cyan:#28c4f4;--blue:#159fe4;--green:#32d48a;--amber:#f2bf49;
  --shadow:0 18px 50px rgba(0,0,0,.24);--radius:16px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font:15px/1.5 Aptos,"Segoe UI",Inter,Arial,sans-serif}
a{color:inherit}
.topbar{height:74px;position:sticky;top:0;z-index:30;display:flex;align-items:center;justify-content:space-between;padding:0 max(24px,calc((100vw - 1180px)/2));background:rgba(6,23,36,.94);backdrop-filter:blur(16px);border-bottom:1px solid #14354a}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}.brand img{width:46px;height:46px}.brand strong{display:block;font-size:18px;letter-spacing:.02em}.brand small{display:block;color:#7594aa;font-size:11px;margin-top:2px}
.topbar nav{display:flex;align-items:center;gap:24px}.topbar nav a{text-decoration:none;color:#a9c0ce;font-size:13px}.topbar nav a:hover{color:#fff}.topbar .nav-cta{padding:9px 13px;border:1px solid #2b6380;border-radius:9px;color:#fff;background:#0c314a}
main{width:min(1180px,calc(100% - 40px));margin:0 auto}
.hero{min-height:560px;display:grid;grid-template-columns:1.35fr .85fr;gap:56px;align-items:center;padding:70px 0 60px;position:relative}.hero:before{content:"";position:absolute;inset:0 45% 0 -50vw;background:radial-gradient(circle at 75% 42%,rgba(21,159,228,.18),transparent 42%);pointer-events:none}
.hero-copy{position:relative;z-index:1}.eyebrow{color:var(--cyan);font-size:11px;letter-spacing:.13em;font-weight:700}.hero h1{font-size:clamp(44px,6vw,72px);line-height:.98;letter-spacing:-.04em;margin:16px 0 18px;max-width:800px}.hero-copy>p{font-size:19px;color:#bdd0dc;max-width:720px;margin:0 0 25px}.hero-actions,.share-actions{display:flex;gap:10px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;text-decoration:none;border:1px solid #2b5f7e;background:#0d314a;padding:11px 16px;border-radius:9px;font-weight:650}.btn.primary{background:linear-gradient(180deg,#18aaf0,#0b82cc);border-color:#2ec5ff;color:#fff}.btn.ghost{background:#092336}.btn:hover{filter:brightness(1.08)}
.audience{display:flex;gap:8px;flex-wrap:wrap;margin-top:28px}.audience span{border:1px solid #214d67;border-radius:999px;padding:6px 9px;color:#92afc1;font-size:11px;background:#081e2e}
.hero-panel{position:relative;background:linear-gradient(180deg,#0c2b41,#081f30);border:1px solid #285871;border-radius:18px;padding:18px;box-shadow:var(--shadow);transform:rotate(1deg)}.panel-head{display:flex;justify-content:space-between;color:#8faabd;font-size:10px;letter-spacing:.09em;padding-bottom:13px;border-bottom:1px solid #1b455e}.panel-head span{color:#78e4aa}.metric-row{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin:13px 0}.metric-row div{padding:11px;background:#0a2639;border:1px solid #1b455e;border-radius:10px}.metric-row small{display:block;color:#7898ab;font-size:9px}.metric-row strong{display:block;margin-top:3px;font-size:17px}.mini-tool{display:flex;justify-content:space-between;gap:20px;padding:11px 10px;border-top:1px solid #173e56;color:#cce0eb;font-size:12px}.mini-tool b{color:#6fdcff;font-weight:600}
.intro{display:grid;grid-template-columns:.75fr 1.25fr;gap:70px;align-items:end;padding:70px 0 25px;border-top:1px solid #14354a}.intro h2,.section-heading h2,.principles h2,.share h2{font-size:34px;line-height:1.08;margin:10px 0 0;letter-spacing:-.025em}.intro p,.section-heading p,.share p{color:#9db5c5;font-size:16px;margin:0}
.tool-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;padding:20px 0 80px}.tool-card{background:linear-gradient(180deg,#0b2334,#091f30);border:1px solid #1c465f;border-radius:16px;padding:15px;box-shadow:0 10px 28px rgba(0,0,0,.12)}.tool-card h3{font-size:19px;margin:16px 3px 6px}.tool-card>p{color:#92adbe;margin:0 3px 5px}
.tool-preview{height:220px;border:1px solid #214d67;border-radius:12px;background:#071b29;padding:14px;overflow:hidden}.preview-top{display:flex;justify-content:space-between;align-items:center;padding-bottom:12px;border-bottom:1px solid #183d54;font-weight:700}.preview-top i{font-style:normal;color:var(--cyan);font-size:19px}.preview-fields{display:grid;grid-template-columns:1fr auto;gap:8px;margin:15px 0;color:#7898ab}.preview-fields b{color:#eef7fb}.preview-result{margin-top:13px;padding:11px;border-radius:9px;background:#0a2639;border:1px solid #1b455e}.preview-result small{display:block;color:#7898ab}.preview-result strong{font:600 18px ui-monospace,SFMono-Regular,Consolas,monospace;color:#eef7fb}.fuel{box-shadow:inset 0 3px 0 #f2bf49}.engineering{box-shadow:inset 0 3px 0 #28c4f4}.weather{box-shadow:inset 0 3px 0 #7f91ff}.vessel{box-shadow:inset 0 3px 0 #32d48a}.weather-line,.profile-line{display:flex;justify-content:space-between;align-items:center;padding:13px 5px;border-bottom:1px solid #173e56}.weather-line span,.profile-line span{color:#7898ab}.weather-line b{font:600 20px ui-monospace,SFMono-Regular,Consolas,monospace}
.use-section{padding:75px 0;border-top:1px solid #14354a}.section-heading{max-width:780px}.section-heading p{margin-top:14px}.use-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:30px}.use-grid article{border:1px solid #1c465f;border-radius:14px;padding:18px;background:#091f30}.use-grid article>span{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:9px;background:#0d3550;color:#71dfff;font:700 11px ui-monospace,SFMono-Regular,Consolas,monospace}.use-grid h3{font-size:16px;margin:16px 0 7px}.use-grid p{color:#8faabd;font-size:13px;margin:0}
.principles{display:grid;grid-template-columns:.75fr 1.25fr;gap:50px;padding:70px 0;border-top:1px solid #14354a}.principle-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.principle-grid div{padding:16px;border:1px solid #1c465f;background:#091f30;border-radius:12px}.principle-grid b{display:block}.principle-grid span{display:block;color:#8faabd;font-size:13px;margin-top:4px}
.share{display:grid;grid-template-columns:1.4fr .6fr;gap:30px;padding:34px;border:1px solid #2a5d7a;background:linear-gradient(135deg,#0c314a,#092437);border-radius:18px;margin:20px 0 30px}.share p{margin:12px 0 20px;max-width:720px}.contact-card{border-left:1px solid #2a536b;padding-left:26px;display:flex;flex-direction:column;justify-content:center;gap:4px}.contact-card small{color:#56c9f5;font-size:10px;letter-spacing:.12em}.contact-card b{font-size:18px}.contact-card span{color:#9bb4c4}.contact-card a{color:#56c9f5;text-decoration:none;margin-top:3px}
.safety-note{display:grid;grid-template-columns:auto 1fr;gap:18px;padding:16px 0 60px;color:#7898aa;font-size:12px}.safety-note b{color:#b9cdd9}
footer{border-top:1px solid #14354a;color:#718fa3;display:flex;justify-content:space-between;width:min(1180px,calc(100% - 40px));margin:0 auto;padding:22px 0 35px;font-size:12px}footer a{text-decoration:none;color:#8fb5ca}
@media(max-width:900px){.topbar nav>a:not(.nav-cta){display:none}.hero{grid-template-columns:1fr;padding-top:45px}.hero-panel{transform:none;max-width:620px}.intro,.principles,.share{grid-template-columns:1fr}.tool-grid{grid-template-columns:1fr}.use-grid{grid-template-columns:1fr 1fr}.contact-card{border-left:0;border-top:1px solid #2a536b;padding:20px 0 0}.hero h1{font-size:48px}}
@media(max-width:560px){main{width:min(100% - 28px,1180px)}.topbar{padding:0 14px}.brand small{display:none}.topbar .nav-cta{font-size:11px;padding:8px 10px}.hero{gap:28px}.hero h1{font-size:39px}.hero-copy>p{font-size:16px}.use-grid{grid-template-columns:1fr}.intro,.principles{gap:20px;padding:52px 0 22px}.share{padding:24px}.audience span{font-size:10px}.tool-preview{height:205px}.safety-note{grid-template-columns:1fr;gap:5px}}