@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;700;900&family=DM+Sans:ital,wght@0,300;0,400;0,500;1,400&family=DM+Mono:wght@400;500&display=swap');
:root{
  --sky:#e8f4fd;--sky2:#cce8f8;--horizon:#f0f8ff;--deep:#0a4878;--mid:#1870b8;--blade:#f8fcff;--grass:#2a8a3a;--meadow:#3aaa4a;--white:#ffffff;--text:#1a3a58;--muted:#6a90a8;--green:#18a030;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{font-family:'DM Sans',sans-serif;background:var(--sky);color:var(--text);min-height:100vh;}
#prog{position:fixed;top:0;left:0;height:3px;background:linear-gradient(to right,var(--green),var(--mid));z-index:1000;width:0%;}
#bt{position:fixed;bottom:28px;right:28px;width:44px;height:44px;background:var(--deep);border:none;color:white;font-size:.95rem;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;opacity:0;pointer-events:none;transition:opacity .3s,transform .25s;z-index:999;text-decoration:none;}
#bt.on{opacity:1;pointer-events:auto;}#bt:hover{transform:translateY(-3px);}
.nav{background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:3px solid var(--mid);padding:10px 28px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:100;}
.nav .bc{font-family:'DM Mono',monospace;font-size:.6rem;color:rgba(24,112,184,.65);letter-spacing:.12em;}
.nav .bc .s{color:rgba(24,112,184,.25);margin:0 8px;}
.nav .tag{font-family:'DM Mono',monospace;font-size:.62rem;color:var(--green);letter-spacing:.1em;}
/* HERO */
.hero{position:relative;min-height:600px;display:flex;align-items:flex-end;overflow:hidden;}
.sky-bg{position:absolute;inset:0;background:linear-gradient(170deg,#b8dff8 0%,#d0ecf8 25%,#e8f6ff 55%,#f0f8f0 80%,#e0f0e4 100%);}
.clouds{position:absolute;inset:0;pointer-events:none;}
.cloud{position:absolute;border-radius:50%;background:rgba(255,255,255,.75);filter:blur(18px);}
.wind-lines{position:absolute;inset:0;pointer-events:none;}
.wl{position:absolute;height:1px;background:linear-gradient(to right,transparent,rgba(255,255,255,.4),transparent);animation:wind-blow linear infinite;}
@keyframes wind-blow{from{transform:translateX(-100%);}to{transform:translateX(200vw);}}
.field{position:absolute;bottom:0;left:0;right:0;height:120px;background:linear-gradient(to top,#2a7a30 0%,#3aaa4a 30%,#4aba5a 50%,transparent 100%);}
.field-hills{position:absolute;bottom:100px;left:0;right:0;height:60px;background:linear-gradient(to top,rgba(42,120,48,.4),transparent);}
/* SVGs turbines */
.turbines-wrap{position:absolute;bottom:95px;left:0;right:0;display:flex;justify-content:center;gap:120px;align-items:flex-end;}
/* Hero text */
.ground{position:absolute;bottom:0;left:0;right:0;height:100px;background:linear-gradient(to top,rgba(248,254,250,.98) 0%,rgba(240,250,244,.7) 60%,transparent 100%);}
.hero-txt{position:relative;z-index:2;width:100%;padding:40px 44px 52px;background:linear-gradient(to top,rgba(240,248,244,.98) 0%,rgba(240,248,244,.65) 55%,transparent 100%);}
.hero-eyebrow{font-family:'DM Mono',monospace;font-size:.62rem;color:var(--green);letter-spacing:.22em;margin-bottom:10px;}
.hero h1{font-family:'Outfit',sans-serif;font-size:clamp(3.5rem,8vw,6.5rem);font-weight:900;color:var(--deep);line-height:.88;}
.hero h1 em{display:block;font-size:.3em;font-style:normal;color:var(--mid);letter-spacing:.15em;margin-bottom:6px;font-family:'DM Mono',monospace;}
.hero-sub{margin-top:12px;font-size:1.06rem;color:rgba(26,58,88,.78);max-width:540px;line-height:1.78;font-weight:300;}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.chip{padding:5px 14px;border:1.5px solid;border-radius:20px;font-family:'DM Mono',monospace;font-size:.6rem;letter-spacing:.1em;text-transform:uppercase;}
.ch-g{border-color:rgba(24,160,48,.45);color:var(--green);background:rgba(24,160,48,.08);}
.ch-b{border-color:rgba(24,112,184,.4);color:var(--mid);}
/* CONTENT */
.main{max-width:1100px;margin:0 auto;padding:0 24px 80px;}
.intro{background:white;border:2px solid rgba(24,112,184,.15);border-top:5px solid var(--mid);padding:28px 44px;margin-bottom:36px;border-radius:4px;}
.intro p{font-size:1.06rem;color:var(--text);line-height:1.85;font-weight:400;}
.intro strong{color:var(--mid);font-weight:600;}
.grid{display:grid;grid-template-columns:1fr 320px;gap:32px;}
.sh{font-family:'Outfit',sans-serif;font-size:1.5rem;font-weight:700;color:var(--deep);margin:44px 0 14px;padding-bottom:8px;border-bottom:2px solid rgba(24,112,184,.2);display:flex;align-items:center;gap:12px;}
.sh:first-child{margin-top:0;}
.sh-ico{font-size:1.1em;}
.mc p{font-size:1.01rem;color:var(--text);line-height:1.85;margin-bottom:14px;}
.mc strong{color:var(--deep);font-weight:600;}
.types{display:grid;grid-template-columns:1fr 1fr;gap:13px;margin:14px 0;}
.ty{background:white;border:1.5px solid rgba(24,112,184,.15);border-top:4px solid var(--mid);border-radius:4px;padding:14px;opacity:0;transform:translateY(12px);transition:opacity .5s,transform .5s;}
.ty.on{opacity:1;transform:translateY(0);}
.ty h4{font-family:'Outfit',sans-serif;font-size:.96rem;font-weight:700;color:var(--deep);margin-bottom:5px;}
.ty p{font-size:.84rem!important;color:var(--muted)!important;margin:0!important;line-height:1.5!important;}
.dt{width:100%;border-collapse:collapse;margin:16px 0;font-size:.87rem;border-radius:4px;overflow:hidden;}
.dt thead th{background:var(--deep);color:white;padding:9px 13px;text-align:left;font-family:'DM Mono',monospace;font-size:.64rem;letter-spacing:.1em;}
.dt td{padding:8px 13px;border-bottom:1px solid rgba(24,112,184,.1);color:var(--text);}
.dt tr:nth-child(even) td{background:rgba(24,112,184,.03);}
.dt td:first-child{font-family:'DM Mono',monospace;color:var(--mid);font-size:.77rem;}
.tl{position:relative;padding-left:26px;margin:14px 0;}
.tl::before{content:'';position:absolute;left:8px;top:0;bottom:0;width:2px;background:linear-gradient(to bottom,var(--mid),var(--green),transparent);}
.tl-item{position:relative;margin-bottom:17px;opacity:0;transform:translateX(-10px);transition:opacity .45s,transform .45s;}
.tl-item.on{opacity:1;transform:translateX(0);}
.tl-item::before{content:'';position:absolute;left:-21px;top:5px;width:9px;height:9px;background:var(--mid);border-radius:50%;border:2px solid white;box-shadow:0 0 0 2px var(--mid);}
.tl-yr{font-family:'DM Mono',monospace;font-size:.66rem;color:var(--green);font-weight:500;letter-spacing:.12em;margin-bottom:1px;}
.tl-item p{font-size:.97rem!important;margin:0!important;line-height:1.6!important;}
.vocab{list-style:none;}
.vocab li{display:flex;gap:12px;padding:8px 0;border-bottom:1px solid rgba(24,112,184,.1);opacity:0;transform:translateX(-8px);transition:opacity .4s,transform .4s;}
.vocab li.on{opacity:1;transform:translateX(0);}
.vocab li:last-child{border-bottom:none;}
.vt{font-family:'DM Mono',monospace;font-size:.71rem;color:var(--mid);min-width:130px;flex-shrink:0;font-weight:500;}
.vd{font-size:.92rem;color:var(--text);}
.scard{background:white;border:1.5px solid rgba(24,112,184,.15);border-radius:6px;padding:18px;margin-bottom:16px;position:relative;}
.scard::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(to right,var(--mid),var(--green));border-radius:6px 6px 0 0;}
.scard h3{font-family:'Outfit',sans-serif;font-size:.96rem;font-weight:700;color:var(--deep);margin-bottom:12px;padding-bottom:7px;border-bottom:1px solid rgba(24,112,184,.12);}
.kl{list-style:none;}
.kl li{display:flex;justify-content:space-between;align-items:center;padding:6px 0;border-bottom:1px solid rgba(24,112,184,.08);}
.kl li:last-child{border-bottom:none;}
.kk{font-size:.8rem;color:var(--muted);}
.kv{font-family:'DM Mono',monospace;font-size:.82rem;color:var(--mid);font-weight:500;}
.rpm-gauge{text-align:center;padding:10px 0;}
.rpm-n{font-family:'DM Mono',monospace;font-size:2.5rem;color:var(--mid);line-height:1;}
.rpm-u{font-size:.65rem;color:var(--muted);margin-top:3px;letter-spacing:.1em;}
footer{background:var(--deep);border-top:3px solid var(--mid);padding:20px 44px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;}
.fb{font-family:'Outfit',sans-serif;font-size:.95rem;font-weight:700;color:rgba(255,255,255,.9);}
.fm{font-family:'DM Mono',monospace;font-size:.6rem;color:rgba(255,255,255,.3);text-align:right;line-height:1.8;letter-spacing:.06em;}
@media(max-width:820px){.grid{grid-template-columns:1fr;}.types{grid-template-columns:1fr;}.hero-txt{padding:30px 22px 36px;}}