:root {
  --bg: #ffffff;
  --text: #0b0b0b;
  --muted: #6b6f76;
  --line: #e6e8eb;
  --green: #18a558;
  --green-ink: #0f7a3f;
  --aqua: #25c2a0;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  font-family: "Noto Sans", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  margin: 0; color: var(--text); background: var(--bg);
}

a { color: var(--green-ink); text-decoration: none; }
a:hover { text-decoration: underline; }

.site-header, .site-footer {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 24px; border-bottom: 1px solid var(--line);
}
.site-footer { border-top: 1px solid var(--line); border-bottom: none; gap: 16px; flex-wrap: wrap; }

.banner { border-bottom: 1px solid var(--line); background: #fff; }
.banner-inner { max-width: 1200px; margin: 0 auto; padding: 10px 24px; display: flex; gap: 8px; align-items: center; }

.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; color: var(--text); }
.brand-mark { width: 36px; height: 36px; }
.nav { display: flex; gap: 16px; align-items: center; }
.nav a { padding: 8px 10px; border-radius: 8px; }
.btn { border: 1px solid var(--line); padding: 10px 14px; border-radius: 10px; display: inline-flex; gap: 8px; align-items: center; transition: transform .15s ease, background .2s ease, border-color .2s ease; }
.btn:hover { transform: translateY(-1px); text-decoration: none; }
.btn.primary { background: var(--green); color: #fff; border-color: var(--green); }
.btn.primary:hover { background: var(--green-ink); border-color: var(--green-ink); }
.btn.ghost { background: transparent; }
.btn.tiny { padding: 8px 10px; font-size: 14px; }

.hero { display: grid; grid-template-columns: 1.2fr 1fr; gap: 32px; padding: 48px 24px; align-items: center; }
.hero-media { position: relative; border-radius: 16px; overflow: hidden; }
.hero-media img { width: 100%; height: 100%; object-fit: cover; display: block; filter: saturate(1.05) contrast(1.02); }
.ripples { position: absolute; inset: 0; background: radial-gradient(1200px 1200px at var(--x,50%) var(--y,50%), rgba(37,194,160,0.25), transparent 45%); pointer-events: none; transition: opacity .3s; opacity: .5; }

.hero-copy h1 { font-size: clamp(32px, 4vw, 54px); line-height: 1.05; margin: 0 0 12px; letter-spacing: -0.02em; }
.hero-copy .accent { color: var(--green); }
.hero-copy p { color: var(--muted); margin: 0 0 18px; max-width: 48ch; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }

.section-header { text-align: center; padding: 32px 24px 8px; }
.section-header h2 { margin: 0 0 6px; font-size: clamp(24px, 3vw, 36px); }
.section-header p { margin: 0; color: var(--muted); }

.activities { padding-bottom: 32px; }
.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; padding: 0 24px 24px; }
.card {
  border: 1px solid var(--line); border-radius: 14px; padding: 16px; display: grid; gap: 10px;
  background: #fff; transition: box-shadow .2s ease, transform .2s ease; will-change: transform;
}
.card:hover { box-shadow: 0 10px 30px rgba(0,0,0,0.08); transform: translateY(-2px); }
.card img { width: 64px; height: 64px; }
.card h3 { margin: 4px 0; }
.card p { margin: 0; color: var(--muted); }
.card .meta { display: flex; gap: 12px; color: var(--green-ink); font-size: 14px; }

.about { padding: 24px; }
.about-content { border: 1px solid var(--line); border-radius: 16px; padding: 24px; background: linear-gradient(0deg, rgba(24,165,88,0.06), rgba(24,165,88,0.06)), #fff; }
.features { margin: 12px 0 0; padding-left: 18px; }
.features li { margin: 8px 0; }

.booking { padding: 16px 24px 48px; }
.book-form {
  margin: 0 auto; max-width: 720px; display: grid; gap: 14px; grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line); padding: 16px; border-radius: 16px; background: #fff;
}
.book-form label { display: grid; gap: 8px; font-weight: 600; }
.book-form input, .book-form select {
  border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; font: inherit; background: #fff;
}
.book-form button { grid-column: span 2; }
.form-note { grid-column: span 2; color: var(--muted); margin: 0; }
.link { text-decoration: underline; }

.foot-nav { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }

@media (max-width: 1040px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
  .hero { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .grid { grid-template-columns: 1fr; }
  .book-form { grid-template-columns: 1fr; }
  .book-form button, .form-note { grid-column: span 1; }
  .site-header, .site-footer { padding: 12px 16px; }
}