:root{
  --green:#0b5d2a;
  --green-dark:#063d1d;
  --green-soft:#e9f5ed;
  --gold:#d9a514;
  --gold-light:#f2c94c;
  --ink:#183128;
  --muted:#64746d;
  --line:#dce7df;
  --white:#ffffff;
  --bg:#f7faf8;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Inter",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
}
a{color:inherit;text-decoration:none}
.container{width:min(1160px,calc(100% - 40px));margin:0 auto}

.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(11,93,42,.08);
}
.nav{height:76px;display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.4px}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
  color:var(--white);
  background:linear-gradient(135deg,var(--green),var(--green-dark));
  box-shadow:0 7px 20px rgba(11,93,42,.18);
  font-size:21px;
}
.brand-text{font-size:18px}
.brand-text span{color:var(--gold)}
.nav-links{display:flex;gap:26px;margin-left:auto}
.nav-links a{font-size:14px;font-weight:600;color:#41584f}
.nav-links a:hover{color:var(--green)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:50px;padding:0 22px;border-radius:12px;
  font-weight:700;font-size:14px;transition:.2s ease;
  border:1px solid transparent;
}
.btn:hover{transform:translateY(-1px)}
.btn-small{min-height:42px;padding:0 16px}
.btn-outline{border-color:#bcd0c2;color:var(--green);background:#fff}
.btn-primary{background:var(--gold);color:#173017;box-shadow:0 10px 28px rgba(217,165,20,.22)}
.btn-primary:hover{background:var(--gold-light)}
.btn-secondary{background:#fff;color:var(--green);border-color:#d0ded4}
.btn-white{background:#fff;color:var(--green-dark)}
.btn-ghost{border-color:rgba(255,255,255,.45);color:#fff}

.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(circle at 88% 18%,rgba(242,201,76,.23),transparent 30%),
    linear-gradient(135deg,#063d1d 0%,#0b5d2a 58%,#17753b 100%);
  color:#fff;
  padding:86px 0 112px;
}
.hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:64px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:800;letter-spacing:1.6px;
  color:var(--green);text-transform:uppercase;
}
.hero .eyebrow{color:#f7d86e}
.hero h1{
  margin:16px 0 20px;font-size:clamp(45px,6vw,72px);
  line-height:1.02;letter-spacing:-2.8px;
}
.hero h1 span{color:#f2c94c}
.hero-lead{font-size:19px;max-width:630px;color:#e4f2e8;margin:0 0 30px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.trust-row{display:flex;gap:20px;flex-wrap:wrap;margin-top:28px;color:#cfe6d6;font-size:13px}

.mail-card{
  border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.98);color:var(--ink);
  border-radius:22px;box-shadow:0 34px 90px rgba(0,0,0,.24);
  overflow:hidden;transform:rotate(1deg);
}
.mail-card-top{padding:18px 20px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #e8efea}
.mail-card-top strong{display:block;font-size:15px}
.mini-label{font-size:10px;color:#809087;letter-spacing:1px;font-weight:800}
.status-dot{font-size:11px;font-weight:700;color:#137a3e;background:#e6f5eb;padding:6px 9px;border-radius:999px}
.mail-window{display:grid;grid-template-columns:135px 1fr;min-height:315px}
.mail-sidebar{background:#f5f8f6;padding:16px 12px;border-right:1px solid #e7eee9}
.compose{background:var(--green);color:#fff;padding:9px 10px;border-radius:8px;font-size:12px;font-weight:700;margin-bottom:14px}
.menu{padding:8px 9px;font-size:12px;color:#607068;display:flex;justify-content:space-between}
.menu.active{background:#e7f3eb;color:var(--green);border-radius:7px;font-weight:700}
.mail-list{padding:10px}
.mail-item{display:flex;gap:10px;padding:14px 10px;border-bottom:1px solid #edf1ee}
.mail-item strong,.mail-item span{display:block}
.mail-item strong{font-size:12px}
.mail-item span{font-size:11px;color:#7a8981;margin-top:2px}
.mail-item.unread{background:#fbf8ec;border-radius:10px}
.avatar{width:34px;height:34px;display:grid;place-items:center;border-radius:50%;background:#d9a514;color:#fff;font-weight:800;font-size:12px;flex:0 0 auto}
.avatar.alt{background:#2c8b50}
.avatar.alt2{background:#7b8c84}

.hero-wave{
  position:absolute;left:-5%;right:-5%;bottom:-52px;height:92px;
  background:var(--bg);border-radius:50% 50% 0 0/45% 45% 0 0;
}

.section{padding:88px 0}
.section-heading{text-align:center;max-width:680px;margin:0 auto 42px}
.section-heading.left{text-align:left;margin:0}
.section-heading h2,.about h2,.signup-card h2{font-size:clamp(31px,4vw,46px);line-height:1.1;letter-spacing:-1.4px;margin:10px 0 14px}
.section-heading p,.about p{color:var(--muted);margin:0}

.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.feature-card{
  background:#fff;border:1px solid var(--line);border-radius:18px;
  padding:26px;box-shadow:0 8px 28px rgba(16,62,35,.05);
}
.feature-card .icon{
  width:44px;height:44px;display:grid;place-items:center;border-radius:12px;
  background:var(--green-soft);color:var(--green);font-weight:800;font-size:20px;
}
.feature-card h3{font-size:17px;margin:18px 0 8px}
.feature-card p{font-size:14px;color:var(--muted);margin:0}

.about{background:#fff;border-top:1px solid #edf2ee;border-bottom:1px solid #edf2ee}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}
.about p{font-size:17px}

.signup-section{padding-top:72px}
.signup-card{
  background:linear-gradient(135deg,var(--green-dark),var(--green));
  color:#fff;border-radius:24px;padding:44px 48px;
  display:grid;grid-template-columns:1.3fr .7fr;gap:38px;align-items:center;
  box-shadow:0 22px 54px rgba(6,61,29,.18);
}
.eyebrow.light{color:#f0cf61}
.signup-card p{color:#d5e7da;max-width:680px;margin:0}
.signup-actions{display:flex;flex-direction:column;gap:11px}

.help-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:70px;align-items:center}
.settings-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:8px 24px}
.settings-card div{padding:18px 0;border-bottom:1px solid #edf1ee}
.settings-card div:last-child{border-bottom:0}
.settings-card span{display:block;color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:1px;font-weight:800;margin-bottom:4px}
.settings-card strong{font-size:14px}

footer{background:#072f18;color:#d3e3d8;padding:46px 0}
.footer-grid{display:grid;grid-template-columns:1fr auto auto;gap:40px;align-items:center}
.footer-brand .brand-mark{background:#fff;color:var(--green)}
footer p{margin:10px 0 0;font-size:13px;color:#a9c2b1}
.footer-links{display:flex;gap:20px;font-size:13px}
.footer-links a:hover{color:#f2c94c}
.copyright{font-size:12px;color:#9fb6a7}

@media (max-width:920px){
  .nav-links{display:none}
  .hero-grid,.about-grid,.signup-card,.help-grid{grid-template-columns:1fr}
  .hero-grid{gap:48px}
  .mail-card{transform:none}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .signup-actions{flex-direction:row;flex-wrap:wrap}
  .footer-grid{grid-template-columns:1fr}
}
@media (max-width:620px){
  .container{width:min(100% - 28px,1160px)}
  .site-header .btn-small{display:none}
  .hero{padding-top:64px}
  .hero h1{letter-spacing:-1.8px}
  .feature-grid{grid-template-columns:1fr}
  .mail-window{grid-template-columns:105px 1fr}
  .signup-card{padding:32px 24px}
  .section{padding:68px 0}
}