:root{
  --green:#1f7a52;
  --green-logo:#1f634c;
  --green-deep:#0b221c;
  --green-soft:#eaf3ee;
  --green-light:#7fd6a4;
  --ink:#0d0f0e;
  --muted:#5b6660;
  --line:#dfe6e2;
  --bg:#ffffff;
  --bg-alt:#f5f8f6;
  --hdr:170px;
  --radius:20px;
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Display","Segoe UI",Inter,Roboto,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img,video{max-width:100%;display:block}
a{color:inherit}
.wrap{width:min(1180px,100% - 48px);margin-inline:auto}
section[id]{scroll-margin-top:calc(var(--hdr) + 12px)}

/* ---------- Header: big centered logo, floating & staying ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.93);-webkit-backdrop-filter:saturate(180%) blur(18px);backdrop-filter:saturate(180%) blur(18px);border-bottom:1px solid var(--line);box-shadow:0 8px 30px -18px rgba(11,34,28,.35)}
.brand{display:flex;justify-content:center;padding:14px 24px 6px}
.brand img{width:clamp(250px,34vw,720px);height:auto}
.nav{display:flex;justify-content:center;flex-wrap:wrap;gap:6px 30px;padding:2px 24px 12px}
.nav a{font-size:.84rem;letter-spacing:.09em;text-transform:uppercase;font-weight:600;text-decoration:none;color:var(--muted);padding:6px 2px;border-bottom:2px solid transparent;transition:color .2s,border-color .2s}
.nav a:hover,.nav a:focus-visible{color:var(--green);border-color:var(--green);outline:none}

/* ---------- Type ---------- */
.g{color:var(--green)}
.eyebrow{display:inline-flex;align-items:center;gap:12px;font-size:.8rem;letter-spacing:.2em;text-transform:uppercase;font-weight:700;color:var(--green)}
.eyebrow::before{content:"";width:34px;height:2px;background:var(--green)}
h1,h2,h3{line-height:1.08;letter-spacing:-.022em;margin:0}
h2{font-size:clamp(2rem,4vw,3.1rem);font-weight:700}
h3{font-size:1.3rem;font-weight:700;letter-spacing:-.01em}
.lead{font-size:clamp(1.05rem,1.5vw,1.25rem);color:var(--muted);max-width:60ch}
.sec-head{max-width:760px;margin-bottom:48px}
.sec-head h2{margin:14px 0 16px}

/* ---------- Hero ---------- */
.hero{padding:clamp(40px,6vw,88px) 0 clamp(48px,6vw,84px);background:radial-gradient(1100px 500px at 85% -10%,var(--green-soft),transparent 70%),var(--bg)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,5vw,72px);align-items:center}
.hero h1{font-size:clamp(2.7rem,6.2vw,5.4rem);font-weight:800;letter-spacing:-.035em;margin:20px 0 22px;color:var(--ink)}
.hero h1 .g{display:inline}
.hero .sub{font-size:clamp(1.1rem,1.7vw,1.4rem);font-weight:600;letter-spacing:-.01em;margin:0 0 14px}
.hero .lead{margin:0 0 34px}
.cta{display:flex;flex-wrap:wrap;gap:14px}
.btn{display:inline-flex;align-items:center;gap:10px;font:inherit;font-weight:600;font-size:1rem;text-decoration:none;padding:15px 28px;border-radius:999px;border:1.5px solid var(--green);transition:transform .2s,background .2s,color .2s,box-shadow .2s}
.btn-primary{background:var(--green);color:#fff;box-shadow:0 12px 26px -12px rgba(31,122,82,.75)}
.btn-primary:hover{transform:translateY(-2px);background:#186644}
.btn-ghost{color:var(--green);background:transparent}
.btn-ghost:hover{background:var(--green-soft)}
.hero-media{position:relative;border-radius:28px;overflow:hidden;box-shadow:0 40px 80px -40px rgba(11,34,28,.55);aspect-ratio:4/4.3}
.hero-media img{width:100%;height:100%;object-fit:cover}
.badge{position:absolute;left:18px;bottom:18px;right:18px;background:rgba(255,255,255,.92);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-radius:16px;padding:16px 20px;display:flex;align-items:baseline;gap:14px}
.badge b{font-size:2rem;letter-spacing:-.03em;color:var(--green);line-height:1}
.badge span{font-size:.95rem;font-weight:600;color:var(--ink)}

/* ---------- Stats ---------- */
.stats{border-block:1px solid var(--line);background:var(--bg)}
.stats .wrap{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:30px 24px;border-left:1px solid var(--line)}
.stat:first-child{border-left:0;padding-left:0}
.stat b{display:block;font-size:clamp(1.7rem,3vw,2.5rem);letter-spacing:-.03em;color:var(--green);line-height:1.1}
.stat span{font-size:.92rem;color:var(--muted)}

/* ---------- Sections ---------- */
.section{padding:clamp(64px,8vw,120px) 0}
.alt{background:var(--bg-alt)}

.film{max-width:1040px;margin-inline:auto}
.player{position:relative;border-radius:26px;overflow:hidden;background:#000;box-shadow:0 50px 90px -45px rgba(11,34,28,.7);aspect-ratio:16/9}
.player video{width:100%;height:100%;object-fit:cover;background:#000}
.center{text-align:center;margin-inline:auto}
.center .lead{margin-inline:auto}

.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:36px 32px 40px;transition:transform .25s,box-shadow .25s,border-color .25s}
.card:hover{transform:translateY(-4px);box-shadow:0 30px 50px -30px rgba(11,34,28,.35);border-color:#c9d8d0}
.card .ico{width:54px;height:54px;border-radius:16px;background:var(--green-soft);display:grid;place-items:center;margin-bottom:26px}
.card .ico svg{width:28px;height:28px;stroke:var(--green);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.card .no{font-size:.8rem;letter-spacing:.18em;font-weight:700;color:var(--green);display:block;margin-bottom:8px}
.card h3{margin-bottom:12px}
.card p{margin:0;color:var(--muted)}

.split{display:grid;grid-template-columns:.8fr 1.2fr;gap:clamp(32px,6vw,90px);align-items:center}
.split .pic{border-radius:26px;overflow:hidden;box-shadow:0 40px 80px -45px rgba(11,34,28,.6);aspect-ratio:4/5}
.split .pic img{width:100%;height:100%;object-fit:cover}
.split h2{margin:14px 0 18px}
.ticks{list-style:none;padding:0;margin:26px 0 0;display:grid;gap:14px}
.ticks li{display:flex;gap:14px;align-items:flex-start;font-weight:500}
.ticks li::before{content:"";flex:none;width:22px;height:22px;margin-top:3px;border-radius:50%;background:var(--green) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 12.5l4 4 8-9'/%3E%3C/svg%3E") center/13px no-repeat}

/* Solar4Future (dark) */
.dark{background:radial-gradient(900px 480px at 15% 0,#14453a 0,transparent 70%),var(--green-deep);color:#fff}
.dark .eyebrow{color:var(--green-light)}
.dark .eyebrow::before{background:var(--green-light)}
.dark .lead{color:rgba(255,255,255,.72)}
.dark .g{color:var(--green-light)}
.big{font-size:clamp(3.4rem,10vw,8rem);font-weight:800;letter-spacing:-.05em;line-height:.95;color:var(--green-light);margin:6px 0 0}
.axis{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:56px}
.axis div{border:1px solid rgba(255,255,255,.16);border-radius:var(--radius);padding:30px 28px;background:rgba(255,255,255,.04)}
.axis small{display:block;font-size:.78rem;letter-spacing:.18em;text-transform:uppercase;font-weight:700;color:var(--green-light);margin-bottom:10px}
.axis h3{margin-bottom:10px}
.axis p{margin:0;color:rgba(255,255,255,.72);font-size:.98rem}
.road{list-style:none;padding:0;margin:56px 0 0;display:grid;grid-template-columns:repeat(4,1fr);gap:0;counter-reset:s}
.road li{position:relative;padding:28px 22px 0 0;border-top:2px solid rgba(255,255,255,.18);counter-increment:s}
.road li::before{content:"";position:absolute;top:-7px;left:0;width:12px;height:12px;border-radius:50%;background:var(--green-light);box-shadow:0 0 0 6px rgba(127,214,164,.18)}
.road b{display:block;font-size:1.05rem;margin-bottom:4px}
.road span{font-size:.92rem;color:rgba(255,255,255,.66)}
blockquote{margin:52px 0 0;font-size:clamp(1.3rem,2.4vw,1.9rem);font-weight:600;letter-spacing:-.015em;line-height:1.3;max-width:30ch}

/* Founder */
.founder{display:grid;grid-template-columns:.75fr 1.25fr;gap:clamp(28px,6vw,84px);align-items:center}
.founder .pic{border-radius:28px;overflow:hidden;box-shadow:0 40px 80px -45px rgba(11,34,28,.6);aspect-ratio:1/1}
.founder .pic img{width:100%;height:100%;object-fit:cover;object-position:60% 30%}
.founder h2{margin:14px 0 8px}
.role{font-weight:600;color:var(--green);margin:0 0 20px}
.founder p{color:var(--muted);max-width:56ch}
.founder .q{margin-top:26px;padding-left:20px;border-left:3px solid var(--green);font-size:1.2rem;font-weight:600;color:var(--ink);max-width:36ch;line-height:1.35}

/* Contact */
.contact{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(28px,6vw,80px);align-items:start}
.mail{display:inline-block;font-size:clamp(1.4rem,3.2vw,2.4rem);font-weight:700;letter-spacing:-.02em;color:var(--green);text-decoration:none;border-bottom:2px solid var(--green);padding-bottom:4px;margin:8px 0 26px;word-break:break-all}
.mail:hover{color:#186644}
.facts{border:1px solid var(--line);border-radius:var(--radius);padding:30px;background:#fff;font-style:normal}
.facts dt{font-size:.76rem;letter-spacing:.16em;text-transform:uppercase;font-weight:700;color:var(--green);margin-top:18px}
.facts dt:first-child{margin-top:0}
.facts dd{margin:4px 0 0;color:var(--ink)}

/* Footer */
footer{background:var(--green-deep);color:rgba(255,255,255,.72);padding:38px 0;font-size:.9rem}
footer .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px 28px;align-items:center}
footer a{text-decoration:none}
footer a:hover{color:#fff;text-decoration:underline}
footer .tag{color:var(--green-light);font-weight:600}

/* Legal pages */
.legal{padding:56px 0 90px}
.legal .wrap{max-width:820px}
.legal h1{font-size:clamp(2rem,4vw,3rem);margin:0 0 28px}
.legal h2{font-size:1.25rem;margin:34px 0 8px;letter-spacing:-.01em}
.legal p,.legal li{color:#2c3430}

/* Reveal */
.js .rv{opacity:0;transform:translateY(22px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}
.js .rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.js .rv{opacity:1;transform:none;transition:none}}

/* ---------- Responsive ---------- */
@media (max-width:980px){
  .hero-grid,.split,.founder,.contact{grid-template-columns:1fr}
  .hero-media{aspect-ratio:16/11}
  .split .pic{aspect-ratio:16/11}
  .founder .pic{aspect-ratio:4/3;max-width:520px}
  .cards,.axis{grid-template-columns:1fr}
  .stats .wrap{grid-template-columns:1fr 1fr}
  .stat:nth-child(3){border-left:0;padding-left:0}
  .stat{border-bottom:1px solid var(--line)}
  .road{grid-template-columns:1fr 1fr;row-gap:36px}
}
@media (max-width:640px){
  .wrap{width:min(1180px,100% - 32px)}
  .brand{padding:10px 16px 4px}
  .brand img{width:66vw}
  .nav{gap:2px 16px;padding:0 12px 8px}
  .nav a{font-size:.72rem;letter-spacing:.06em}
  .road{grid-template-columns:1fr}
  .card{padding:28px 24px 32px}
}