:root {
  --green: #2E7D5B;
  --green-dark: #1F5A40;
  --green-soft: #A8D5BA;
  --green-mist: #E8F3EC;
  --cream: #FBFAF6;
  --ink: #223027;
  --muted: #5E7266;
  --white: #ffffff;
  --border: #E1EAE4;
  --shadow: 0 8px 30px rgba(31, 90, 64, .10);
  --shadow-sm: 0 3px 12px rgba(31, 90, 64, .08);
  --radius: 18px;
  --radius-sm: 12px;
  --max: 1180px;
  --sp: 8px;
  --font-head: 'Fraunces', Georgia, serif;
  --font-body: 'Inter', system-ui, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--cream);
  line-height: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--green); text-decoration: none; transition: color .2s; }
a:hover { color: var(--green-dark); }

h1, h2, h3, h4 { font-family: var(--font-head); font-weight: 600; line-height: 1.15; color: var(--ink); }
h1 { font-size: clamp(2.1rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.7rem, 3.5vw, 2.6rem); }
h3 { font-size: 1.35rem; }
p { margin-bottom: 1rem; }

.container { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.section { padding: 84px 0; }
.section-sm { padding: 56px 0; }
.bg-mist { background: var(--green-mist); }
.bg-green { background: var(--green); color: var(--white); }
.text-center { text-align: center; }
.eyebrow {
  display: inline-block; font-family: var(--font-body); font-weight: 700;
  letter-spacing: .12em; text-transform: uppercase; font-size: .78rem;
  color: var(--green); margin-bottom: 14px;
}
.lead { font-size: 1.18rem; color: var(--muted); max-width: 640px; }
.text-center .lead { margin-left: auto; margin-right: auto; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--green); color: #fff; padding: 14px 28px;
  border-radius: 50px; font-weight: 600; font-size: .98rem;
  border: none; cursor: pointer; transition: transform .2s, box-shadow .2s, background .2s;
  box-shadow: var(--shadow-sm);
}
.btn:hover { background: var(--green-dark); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow); }
.btn-sm { padding: 10px 18px; font-size: .88rem; }
.btn-ghost { background: transparent; color: var(--green); border: 2px solid var(--green-soft); box-shadow: none; }
.btn-ghost:hover { background: var(--green-mist); color: var(--green-dark); transform: translateY(-2px); }
.btn-light { background: #fff; color: var(--green-dark); }
.btn-light:hover { background: var(--green-mist); color: var(--green-dark); }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(251, 250, 246, .92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 74px; }
.logo { display: flex; align-items: center; gap: 10px; font-family: var(--font-head); font-weight: 600; font-size: 1.35rem; color: var(--ink); }
.logo svg { width: 30px; height: 30px; color: var(--green); }
.nav-links { display: flex; align-items: center; gap: 30px; list-style: none; }
.nav-links a { color: var(--ink); font-weight: 500; font-size: .96rem; }
.nav-links a:hover { color: var(--green); }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; color: var(--ink); }

/* Hero */
.hero {
  position: relative; padding: 92px 0 100px;
  background: linear-gradient(120deg, var(--green-mist) 0%, var(--cream) 60%);
  overflow: hidden;
}
.hero-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 60px; align-items: center; }
.hero h1 { margin-bottom: 20px; }
.hero .lead { margin-bottom: 30px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-visual { position: relative; }
.hero-visual img { border-radius: var(--radius); box-shadow: var(--shadow); width: 100%; height: 520px; object-fit: cover; }
.hero-badge {
  position: absolute; bottom: -22px; left: -22px; background: #fff;
  border-radius: var(--radius-sm); padding: 16px 20px; box-shadow: var(--shadow);
  display: flex; align-items: center; gap: 12px; max-width: 240px;
}
.hero-badge svg { width: 34px; height: 34px; color: var(--green); flex-shrink: 0; }
.hero-badge strong { display: block; font-family: var(--font-head); }
.hero-badge span { font-size: .82rem; color: var(--muted); }

/* Grid cards */
.grid { display: grid; gap: 28px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: #fff; border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow-sm); border: 1px solid var(--border);
  transition: transform .25s, box-shadow .25s;
  display: flex; flex-direction: column;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.card img { width: 100%; height: 220px; object-fit: cover; }
.card-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.card-body h3 { margin-bottom: 8px; }
.card-body p { color: var(--muted); font-size: .95rem; margin-bottom: 16px; flex: 1; }
.card-tag {
  display: inline-block; background: var(--green-mist); color: var(--green-dark);
  font-size: .74rem; font-weight: 700; padding: 5px 12px; border-radius: 30px;
  text-transform: uppercase; letter-spacing: .05em; margin-bottom: 12px; align-self: flex-start;
}
.card-link { font-weight: 600; display: inline-flex; align-items: center; gap: 6px; }
.card-link svg { width: 16px; height: 16px; transition: transform .2s; }
.card:hover .card-link svg { transform: translateX(4px); }

/* Section head */
.section-head { max-width: 700px; margin-bottom: 48px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

/* Feature list / difficulty */
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.chip {
  font-size: .8rem; padding: 6px 12px; border-radius: 30px;
  background: var(--green-mist); color: var(--green-dark); font-weight: 600;
}
.chip svg { width: 14px; height: 14px; vertical-align: -2px; margin-right: 4px; }

/* Split feature */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split.rev .split-media { order: 2; }
.split-media img { border-radius: var(--radius); box-shadow: var(--shadow); width: 100%; height: 440px; object-fit: cover; }
.split ul { list-style: none; margin: 18px 0; }
.split li { padding: 10px 0 10px 32px; position: relative; border-bottom: 1px solid var(--border); }
.split li::before {
  content: ''; position: absolute; left: 0; top: 16px; width: 16px; height: 16px;
  background: var(--green-soft); border-radius: 50%; box-shadow: inset 0 0 0 4px var(--green);
}

/* Article page */
.article-hero { padding: 60px 0 40px; }
.breadcrumb { font-size: .85rem; color: var(--muted); margin-bottom: 18px; }
.breadcrumb a { color: var(--muted); }
.article-body { max-width: 760px; margin: 0 auto; }
.article-body h2 { margin: 42px 0 16px; }
.article-body h3 { margin: 28px 0 10px; }
.article-body p, .article-body li { color: #34443a; }
.article-body ul, .article-body ol { margin: 0 0 18px 22px; }
.article-body li { margin-bottom: 8px; }
.article-body img { border-radius: var(--radius); margin: 28px 0; box-shadow: var(--shadow-sm); }
.callout {
  background: var(--green-mist); border-left: 4px solid var(--green);
  padding: 20px 24px; border-radius: var(--radius-sm); margin: 28px 0;
}
.callout strong { color: var(--green-dark); }

/* Nom scientifique (hero) */
.sci-name { color: var(--green-dark); font-size: 1rem; display: inline-flex; align-items: center; gap: 8px; background: var(--green-mist); padding: 8px 16px; border-radius: 30px; margin-top: 8px; }
.sci-name svg { width: 18px; height: 18px; }

/* GBIF classification box */
.gbif-box { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; margin: 28px 0; box-shadow: var(--shadow-sm); }
.gbif-head { display: flex; align-items: center; gap: 8px; font-weight: 700; color: var(--green-dark); font-family: var(--font-head); font-size: 1.15rem; margin-bottom: 18px; }
.gbif-head svg { width: 22px; height: 22px; color: var(--green); }
.gbif-head span { font-family: var(--font-body); font-weight: 500; font-size: .82rem; color: var(--muted); }
.gbif-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.gbif-grid div { background: var(--green-mist); border-radius: var(--radius-sm); padding: 12px 16px; }
.gbif-grid span { display: block; font-size: .76rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin-bottom: 3px; }
.gbif-grid strong { color: var(--ink); font-family: var(--font-body); }
.gbif-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 16px; font-weight: 600; font-size: .92rem; }
.gbif-link svg { width: 16px; height: 16px; }

/* Affiliation block */
.affiliate-block { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 40px; box-shadow: var(--shadow-sm); }
.affiliate-head { text-align: center; max-width: 620px; margin: 0 auto 32px; }
.affiliate-head h2 { font-size: 1.8rem; margin-top: 4px; }
.affiliate-disc { font-size: .84rem; color: var(--muted); margin-top: 8px; }
.affiliate-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.affiliate-card { border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; display: flex; flex-direction: column; transition: transform .2s, box-shadow .2s; background: var(--cream); }
.affiliate-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.affiliate-img { height: 170px; overflow: hidden; background: var(--green-mist); }
.affiliate-img img { width: 100%; height: 100%; object-fit: cover; }
.affiliate-body { padding: 18px; display: flex; flex-direction: column; flex: 1; }
.affiliate-body h3 { font-size: 1.08rem; margin-bottom: 8px; }
.affiliate-body p { color: var(--muted); font-size: .9rem; flex: 1; margin-bottom: 14px; }
.affiliate-rating { display: inline-flex; align-items: center; gap: 5px; font-weight: 700; font-size: .85rem; color: #C77D0A; margin-bottom: 8px; }
.affiliate-rating svg { width: 15px; height: 15px; fill: #E8A33D; stroke: #E8A33D; }
.affiliate-foot { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.affiliate-price { font-family: var(--font-head); font-weight: 600; color: var(--green-dark); font-size: 1.05rem; }
.affiliate-foot .btn svg { width: 15px; height: 15px; }

/* Fact table / specs */
.specs { width: 100%; border-collapse: collapse; margin: 24px 0; background: #fff; border-radius: var(--radius-sm); overflow: hidden; box-shadow: var(--shadow-sm); }
.specs th, .specs td { text-align: left; padding: 14px 18px; border-bottom: 1px solid var(--border); }
.specs th { background: var(--green-mist); font-family: var(--font-body); width: 38%; color: var(--green-dark); }
.specs tr:last-child td, .specs tr:last-child th { border-bottom: none; }

/* Comparison table */
.compare-wrap { overflow-x: auto; }
.compare { width: 100%; border-collapse: collapse; background: #fff; border-radius: var(--radius-sm); overflow: hidden; box-shadow: var(--shadow-sm); min-width: 620px; }
.compare th, .compare td { padding: 16px; text-align: left; border-bottom: 1px solid var(--border); font-size: .95rem; }
.compare thead th { background: var(--green); color: #fff; font-family: var(--font-body); font-weight: 600; }
.compare tbody tr:hover { background: var(--green-mist); }
.stars { color: #E8A33D; letter-spacing: 2px; }

/* FAQ */
.faq-item { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-sm); margin-bottom: 14px; overflow: hidden; }
.faq-q { width: 100%; text-align: left; background: none; border: none; padding: 20px 24px; font-size: 1.05rem; font-weight: 600; font-family: var(--font-head); cursor: pointer; display: flex; justify-content: space-between; align-items: center; color: var(--ink); }
.faq-q svg { width: 20px; height: 20px; transition: transform .3s; color: var(--green); flex-shrink: 0; }
.faq-item.open .faq-q svg { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .3s ease; padding: 0 24px; color: var(--muted); }
.faq-item.open .faq-a { max-height: 400px; padding: 0 24px 20px; }

/* Widget / calculator */
.widget { background: #fff; border-radius: var(--radius); padding: 32px; box-shadow: var(--shadow); border: 1px solid var(--border); }
.widget label { display: block; font-weight: 600; margin: 16px 0 6px; font-size: .95rem; }
.widget select, .widget input {
  width: 100%; padding: 12px 14px; border: 1px solid var(--border);
  border-radius: var(--radius-sm); font-family: inherit; font-size: 1rem; background: var(--cream); color: var(--ink);
}
.widget select:focus, .widget input:focus { outline: 2px solid var(--green-soft); border-color: var(--green); }
.widget-result {
  margin-top: 24px; padding: 22px; background: var(--green-mist);
  border-radius: var(--radius-sm); text-align: center;
}
.widget-result .big { font-family: var(--font-head); font-size: 2rem; color: var(--green-dark); display: block; }

/* Newsletter */
.newsletter { background: var(--green); color: #fff; border-radius: var(--radius); padding: 56px; text-align: center; position: relative; overflow: hidden; }
.newsletter h2 { color: #fff; }
.newsletter p { color: rgba(255,255,255,.85); max-width: 520px; margin: 10px auto 26px; }
.news-form { display: flex; gap: 12px; max-width: 480px; margin: 0 auto; }
.news-form input { flex: 1; padding: 14px 18px; border: none; border-radius: 50px; font-size: 1rem; font-family: inherit; }
.news-form input:focus { outline: 3px solid var(--green-soft); }
.news-note { font-size: .8rem; color: rgba(255,255,255,.7); margin-top: 14px; }

/* Footer */
.site-footer { background: var(--ink); color: #c8d4cc; padding: 64px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 44px; }
.footer-brand .logo { color: #fff; margin-bottom: 14px; }
.footer-brand p { font-size: .92rem; color: #9db0a5; max-width: 300px; }
.site-footer h4 { color: #fff; margin-bottom: 16px; font-family: var(--font-body); font-size: .9rem; text-transform: uppercase; letter-spacing: .08em; }
.site-footer ul { list-style: none; }
.site-footer li { margin-bottom: 10px; }
.site-footer a { color: #b5c5bb; font-size: .93rem; }
.site-footer a:hover { color: var(--green-soft); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); padding-top: 22px; text-align: center; font-size: .85rem; color: #8ba295; }

/* Pill row */
.pill-row { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-top: 32px; }
.pill { background: #fff; border: 1px solid var(--border); border-radius: 50px; padding: 10px 20px; font-weight: 600; font-size: .9rem; box-shadow: var(--shadow-sm); }
.pill:hover { border-color: var(--green-soft); color: var(--green-dark); }

/* Reveal */
.reveal-on-scroll { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal-on-scroll.revealed { opacity: 1; transform: none; }

/* Stat strip */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.stat .num { font-family: var(--font-head); font-size: 2.4rem; color: var(--green); display: block; }
.stat .lbl { color: var(--muted); font-size: .92rem; }

/* Responsive */
@media (max-width: 960px) {
  .hero-grid, .split { grid-template-columns: 1fr; gap: 36px; }
  .split.rev .split-media { order: 0; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .hero-visual img { height: 380px; }
  .affiliate-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .nav-links {
    position: absolute; top: 74px; left: 0; right: 0; background: var(--cream);
    flex-direction: column; padding: 20px 24px; gap: 18px; border-bottom: 1px solid var(--border);
    display: none; box-shadow: var(--shadow);
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .news-form { flex-direction: column; }
  .newsletter { padding: 36px 24px; }
  .section { padding: 56px 0; }
  .affiliate-grid { grid-template-columns: 1fr; }
  .gbif-grid { grid-template-columns: 1fr; }
  .affiliate-block { padding: 24px; }
}