:root {
  --green: #2f8a57;
  --green-dark: #1f5f3f;
  --green-deep: #133a28;
  --amber: #e9a23b;
  --ink: #17231c;
  --muted: #56655c;
  --bg: #fbfaf5;
  --bg-alt: #f1efe4;
  --card: #ffffff;
  --line: #e2e0d3;
  --sky-1: #e6f3ea;
  --sky-2: #f7f3e3;
  --sun: #f4c46a;
  --hill-1: #9fd3a8;
  --hill-2: #5fae74;
  --row: #2f7a4c;
  --radius: 18px;
  --shadow: 0 1px 2px rgba(19, 58, 40, .06), 0 8px 24px rgba(19, 58, 40, .06);
  --max: 1160px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --green: #5cc38a;
    --green-dark: #84d8a6;
    --ink: #e9efe9;
    --muted: #a6b5ab;
    --bg: #0f1712;
    --bg-alt: #142019;
    --card: #18251d;
    --line: #26372c;
    --sky-1: #17281e;
    --sky-2: #1c2a20;
    --sun: #d9a54d;
    --hill-1: #2c5a3b;
    --hill-2: #23492f;
    --row: #6fcf95;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .25);
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  font-family: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: var(--green); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; letter-spacing: -.02em; }
h1 { font-size: clamp(2.3rem, 5vw, 3.8rem); font-weight: 800; }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.5rem); font-weight: 750; }
h3 { font-size: 1.15rem; font-weight: 650; }
p { margin: 0 0 1em; }

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 20px; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 16px; z-index: 100; background: var(--card); padding: 8px 12px; border-radius: 8px; }

.eyebrow {
  display: inline-block;
  font-size: .8rem; font-weight: 700; text-transform: uppercase; letter-spacing: .12em;
  color: var(--green);
  margin-bottom: .8em;
}
.lead { font-size: 1.15rem; color: var(--muted); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .4em;
  padding: .85em 1.4em; border-radius: 999px; border: 2px solid var(--green-dark);
  background: var(--green-dark); color: #fff; font: inherit; font-weight: 600;
  text-decoration: none; cursor: pointer; transition: transform .15s, background .15s;
}
.btn:hover { transform: translateY(-1px); background: var(--green); border-color: var(--green); }
.btn-ghost { background: transparent; color: var(--green-dark); }
.btn-ghost:hover { background: var(--green-dark); color: #fff; }
.btn-sm { padding: .5em 1.1em; font-size: .95rem; }
.btn-block { width: 100%; }
@media (prefers-color-scheme: dark) {
  .btn { color: #0f1712; }
  .btn-ghost { color: var(--green-dark); }
  .btn-ghost:hover { color: #0f1712; }
}

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s;
}
.site-header.scrolled { border-bottom-color: var(--line); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.35rem; color: var(--ink); text-decoration: none; letter-spacing: -.03em; }
.brand-mark { width: 32px; height: 32px; color: var(--green-dark); }
.brand-dot { color: var(--amber); }
.nav-menu { display: flex; align-items: center; gap: 28px; }
.nav-menu a:not(.btn) { color: var(--ink); text-decoration: none; font-weight: 500; }
.nav-menu a:not(.btn):hover { color: var(--green); }
.nav-toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 5px 0; transition: transform .2s, opacity .2s; }

@media (max-width: 820px) {
  .nav-toggle { display: block; }
  .nav-menu {
    position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--bg); border-bottom: 1px solid var(--line);
    padding: 8px 20px 20px;
    display: none;
  }
  .nav-menu.open { display: flex; }
  .nav-menu a:not(.btn) { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .nav-menu .btn { margin-top: 14px; }
  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
}

/* Hero */
.hero { padding: 64px 0 80px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
.hero h1 em { font-style: normal; color: var(--green); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0; }
.fields { width: 100%; height: auto; filter: drop-shadow(0 20px 40px rgba(19, 58, 40, .12)); }
.svg-label { font: 600 12px "Be Vietnam Pro", sans-serif; fill: var(--muted); }
.svg-big { font: 800 30px "Be Vietnam Pro", sans-serif; fill: var(--ink); }
.svg-small { font: 500 11px "Be Vietnam Pro", sans-serif; fill: var(--ink); }

@media (max-width: 900px) {
  .hero { padding: 40px 0 56px; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
}

/* Strip */
.strip { border-block: 1px solid var(--line); background: var(--bg-alt); }
.strip-inner { display: flex; align-items: center; gap: 24px; padding-block: 18px; flex-wrap: wrap; }
.strip-inner > span { font-size: .8rem; font-weight: 700; text-transform: uppercase; letter-spacing: .12em; color: var(--muted); }
.strip ul { display: flex; flex-wrap: wrap; gap: 10px; list-style: none; margin: 0; padding: 0; }
.strip li { padding: 6px 14px; border-radius: 999px; background: var(--card); border: 1px solid var(--line); font-weight: 500; font-size: .95rem; }

/* Sections */
.section { padding: 96px 0; }
.section-alt { background: var(--bg-alt); }
.section-head { max-width: 680px; margin-bottom: 48px; }
.section-head p:not(.eyebrow) { color: var(--muted); font-size: 1.08rem; }
@media (max-width: 700px) { .section { padding: 64px 0; } }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; transition: transform .2s, box-shadow .2s;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.card p { color: var(--muted); margin: 0; }
.icon {
  width: 48px; height: 48px; border-radius: 14px; display: grid; place-items: center;
  background: color-mix(in srgb, var(--green) 14%, transparent); margin-bottom: 18px;
}
.icon svg { width: 24px; height: 24px; fill: none; stroke: var(--green); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
@media (max-width: 960px) { .cards { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .cards { grid-template-columns: 1fr; } }

/* Products */
.products { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: stretch; }
.product {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 32px; display: flex; flex-direction: column;
}
.product p { color: var(--muted); }
.product-feature { background: var(--green-deep); border-color: var(--green-deep); color: #eef6f0; }
.product-feature p { color: #c4dccb; }
.product-feature .tag { background: rgba(255, 255, 255, .12); color: #fff; }
.tag {
  align-self: flex-start; font-size: .78rem; font-weight: 600; padding: 4px 10px; border-radius: 999px;
  background: color-mix(in srgb, var(--amber) 20%, transparent); color: var(--ink); margin-bottom: 16px;
}
.product h3 { font-size: 1.5rem; }
.product .for { margin: auto 0 0; padding-top: 14px; border-top: 1px solid color-mix(in srgb, currentColor 14%, transparent); font-size: .9rem; font-weight: 600; }
.product-feature .for { color: #fff; }
@media (max-width: 960px) { .products { grid-template-columns: 1fr; } }

/* Steps */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: s; }
.steps li { position: relative; padding-top: 24px; border-top: 2px solid var(--line); }
.steps li::before { content: ""; position: absolute; top: -2px; left: 0; width: 48px; height: 2px; background: var(--green); }
.step-n { display: block; font-size: 2.2rem; font-weight: 800; color: var(--amber); line-height: 1; margin-bottom: 14px; }
.steps p { color: var(--muted); margin: 0; }
@media (max-width: 900px) { .steps { grid-template-columns: repeat(2, 1fr); gap: 36px 20px; } }
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }

/* About */
.section-dark { background: var(--green-deep); color: #eef6f0; }
.section-dark .eyebrow { color: var(--amber); }
.section-dark .lead, .section-dark p { color: #c4dccb; }
.section-dark strong { color: #fff; }
.about { display: grid; grid-template-columns: 1.2fr 1fr; gap: 64px; align-items: start; }
.values { list-style: none; padding: 0; margin: 0; display: grid; gap: 16px; }
.values li { padding: 22px 24px; border-radius: var(--radius); background: rgba(255, 255, 255, .06); border: 1px solid rgba(255, 255, 255, .1); }
.values h3 { color: #fff; margin-bottom: .3em; }
.values p { margin: 0; }
@media (max-width: 900px) { .about { grid-template-columns: 1fr; gap: 40px; } }

/* Contact */
.contact { display: grid; grid-template-columns: 1fr 1.1fr; gap: 64px; align-items: start; }
.contact > div > p { color: var(--muted); }
.contact-info { margin: 28px 0 0; display: grid; gap: 14px; }
.contact-info div { display: grid; grid-template-columns: 90px 1fr; }
.contact-info dt { font-weight: 600; color: var(--muted); }
.contact-info dd { margin: 0; font-weight: 500; }
.form { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; box-shadow: var(--shadow); }
.field { display: grid; gap: 6px; margin-bottom: 16px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
label { font-weight: 600; font-size: .92rem; }
input, select, textarea {
  font: inherit; color: var(--ink); background: var(--bg);
  border: 1.5px solid var(--line); border-radius: 12px; padding: .7em .9em; width: 100%;
  transition: border-color .15s, box-shadow .15s;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--green); box-shadow: 0 0 0 4px color-mix(in srgb, var(--green) 18%, transparent); }
.invalid { border-color: #d0533a; }
textarea { resize: vertical; }
.form-note { margin: 12px 0 0; font-size: .92rem; color: var(--muted); min-height: 1.4em; }
@media (max-width: 900px) { .contact { grid-template-columns: 1fr; gap: 40px; } }
@media (max-width: 520px) { .field-row { grid-template-columns: 1fr; gap: 0; } .form { padding: 22px; } }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: 32px 0; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer-inner p { margin: 0; color: var(--muted); font-size: .92rem; }

/* Reveal */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}