:root {
  --bg: #f4f6f0;
  --ink: #0f2b2a;
  --muted: #3f5856;
  --brand: #0f7a72;
  --brand-strong: #095b55;
  --accent: #d8882c;
  --card: #ffffffd9;
  --line: #d8e1da;
  --shadow: 0 18px 40px rgba(7, 34, 32, 0.16);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Avenir Next", "Segoe UI", "Trebuchet MS", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 20% 0%, #ddf0e2 0%, transparent 36%),
    radial-gradient(circle at 100% 10%, #daf0ed 0%, transparent 30%),
    var(--bg);
  min-height: 100vh;
}

.shell {
  width: min(1100px, 92vw);
  margin: 0 auto;
  padding: 26px 0 48px;
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 8px 0 16px;
}

.logo {
  font-size: clamp(1.6rem, 2.9vw, 2.3rem);
  line-height: 1;
  margin: 0;
  letter-spacing: 0.06em;
}

.tag {
  margin: 0;
  color: var(--muted);
  font-style: italic;
}

.nav {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.nav a {
  text-decoration: none;
  color: var(--ink);
  border: 1px solid #c6d4cc;
  background: #ffffffb8;
  border-radius: 999px;
  padding: 8px 13px;
  font-weight: 600;
}

.nav a:hover {
  border-color: var(--brand);
  color: var(--brand-strong);
}

.hero {
  margin-top: 12px;
  border-radius: 26px;
  border: 1px solid var(--line);
  background:
    linear-gradient(120deg, #ffffffed, #f6f8f2e0),
    linear-gradient(140deg, #dbf0e5 0%, #e3f1ef 65%, #f8f9f7 100%);
  box-shadow: var(--shadow);
  padding: clamp(24px, 4vw, 44px);
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  right: -60px;
  top: -80px;
  width: 270px;
  height: 270px;
  border-radius: 50%;
  background: radial-gradient(circle at center, #0f7a722f 0%, #0f7a7200 72%);
}

.hero h2 {
  margin: 0 0 10px;
  max-width: 800px;
  font-size: clamp(1.6rem, 3vw, 2.7rem);
}

.hero p {
  margin: 0;
  max-width: 680px;
  color: var(--muted);
  font-size: clamp(1rem, 1.6vw, 1.14rem);
}

.cta-row {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-block;
  text-decoration: none;
  border-radius: 999px;
  padding: 12px 18px;
  font-weight: 700;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--brand);
  color: #fff;
}

.btn-primary:hover {
  background: var(--brand-strong);
}

.btn-secondary {
  background: #fff;
  border-color: #bfd2c7;
  color: var(--ink);
}

.btn-secondary:hover {
  border-color: var(--brand);
}

.grid {
  margin-top: 24px;
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  border-radius: 18px;
  border: 1px solid var(--line);
  background: var(--card);
  box-shadow: 0 8px 22px rgba(7, 34, 32, 0.06);
  padding: 18px;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 1.2rem;
}

.card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.45;
}

.card .card-link {
  margin-top: 12px;
  display: inline-block;
  color: var(--brand-strong);
  text-decoration: none;
  font-weight: 700;
}

.section-space {
  margin-top: 16px;
}

.split {
  margin-top: 24px;
  display: grid;
  gap: 16px;
  grid-template-columns: 1.2fr 1fr;
}

.list {
  margin: 0;
  padding-left: 20px;
}

.list li {
  margin-bottom: 8px;
  color: var(--muted);
}

.email-box {
  margin-top: 24px;
  border-radius: 18px;
  border: 1px solid #bfd6ca;
  background: #fff;
  padding: 18px;
}

.email-box h3 {
  margin: 0 0 8px;
}

.email-box p {
  margin: 0 0 14px;
  color: var(--muted);
}

.email-box form {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

input[type="email"] {
  flex: 1 1 230px;
  min-width: 180px;
  border: 1px solid #bfd2c7;
  border-radius: 10px;
  padding: 11px 12px;
  font: inherit;
}

button {
  border: 1px solid transparent;
  background: var(--brand);
  color: #fff;
  border-radius: 10px;
  padding: 11px 14px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

button:hover {
  background: var(--brand-strong);
}

.small {
  margin-top: 8px;
  color: #59726f;
  font-size: 0.92rem;
}

.foot {
  margin-top: 28px;
  color: #5f7270;
  font-size: 0.95rem;
}

.section-head {
  margin: 8px 0 12px;
  font-size: clamp(1.35rem, 2.3vw, 1.9rem);
}

.pill {
  display: inline-block;
  padding: 5px 10px;
  border-radius: 999px;
  background: #f0f7f2;
  border: 1px solid #c9ddce;
  color: #254643;
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.notice {
  border-left: 4px solid var(--accent);
  padding: 10px 12px;
  background: #fff6eb;
  color: #765023;
  border-radius: 9px;
}

.art-frame {
  margin: 14px 0 0;
  border: 1px solid #c7d7ce;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 14px 30px rgba(6, 35, 32, 0.12);
  background: #f9fbf9;
}

.art-frame img {
  display: block;
  width: 100%;
  height: auto;
}

@media (max-width: 900px) {
  .grid,
  .split {
    grid-template-columns: 1fr;
  }

  .top {
    align-items: flex-start;
    flex-direction: column;
  }
}