:root {
  --ivory: #f8f3ea;
  --forest: #355c4d;
  --gold: #b58a3b;
  --brown: #765b4b;
  --ink: #24322d;
  --white: #fffdf9;
  --line: rgba(53, 92, 77, 0.16);
  --shadow: 0 24px 70px rgba(36, 50, 45, 0.10);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--ivory); font-family: "Noto Sans Thai", "Leelawadee UI", sans-serif; line-height: 1.7; }
a { color: inherit; }
.container { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.nav { position: sticky; top: 0; z-index: 10; background: rgba(248,243,234,.9); backdrop-filter: blur(16px); border-bottom: 1px solid var(--line); }
.nav-inner { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { text-decoration: none; font-weight: 800; letter-spacing: .08em; color: var(--forest); }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { text-decoration: none; font-size: .95rem; }
.menu-button { display: none; border: 1px solid var(--line); background: var(--white); border-radius: 999px; padding: 8px 14px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 13px 22px; border-radius: 999px; text-decoration: none; font-weight: 700; border: 1px solid var(--forest); transition: transform .2s, box-shadow .2s; }
.button:hover { transform: translateY(-2px); box-shadow: 0 10px 26px rgba(53,92,77,.16); }
.button-primary { background: var(--forest); color: white; }
.button-secondary { background: transparent; color: var(--forest); }
.hero { padding: 92px 0 72px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 64px; align-items: center; }
.eyebrow { color: var(--gold); font-weight: 800; letter-spacing: .08em; text-transform: uppercase; font-size: .82rem; }
h1, h2, h3 { color: var(--forest); line-height: 1.18; margin-top: 0; }
h1 { font-family: Georgia, "Leelawadee UI", serif; font-size: clamp(3.15rem, 7vw, 6.4rem); letter-spacing: -.045em; margin-bottom: 20px; }
h2 { font-size: clamp(2rem, 4.2vw, 3.6rem); letter-spacing: -.035em; }
h3 { font-size: 1.35rem; }
.lead { font-size: clamp(1.08rem, 2vw, 1.3rem); color: var(--brown); max-width: 680px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.chart-art { min-height: 480px; position: relative; display: grid; place-items: center; }
.orbit, .orbit::before, .orbit::after { position: absolute; border: 1px solid rgba(181,138,59,.46); border-radius: 50%; }
.orbit { width: 390px; height: 390px; }
.orbit::before { content: ""; inset: 42px; }
.orbit::after { content: ""; inset: 100px; background: radial-gradient(circle, rgba(181,138,59,.20), transparent 67%); }
.chart-copy { z-index: 1; text-align: center; max-width: 230px; color: var(--forest); font-family: Georgia, serif; font-size: 1.45rem; }
.section { padding: 88px 0; }
.section-white { background: var(--white); }
.section-head { max-width: 760px; margin-bottom: 46px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card { padding: 30px; background: var(--white); border: 1px solid var(--line); border-radius: 24px; box-shadow: 0 12px 34px rgba(36,50,45,.05); }
.section-white .card { background: var(--ivory); }
.number { color: var(--gold); font-weight: 800; }
.story { display: grid; grid-template-columns: .8fr 1.2fr; gap: 72px; align-items: start; }
.quote { font-family: Georgia, "Leelawadee UI", serif; color: var(--forest); font-size: clamp(1.7rem, 3vw, 2.45rem); line-height: 1.35; border-left: 3px solid var(--gold); padding-left: 30px; }
.course-band { background: var(--forest); color: white; border-radius: 32px; padding: clamp(36px, 6vw, 70px); display: grid; grid-template-columns: 1.25fr .75fr; gap: 30px; align-items: center; }
.course-band h2, .course-band .eyebrow { color: white; }
.course-band .button { background: var(--ivory); color: var(--forest); border-color: var(--ivory); }
.footer { padding: 50px 0; border-top: 1px solid var(--line); }
.footer-grid { display: flex; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.socials { display: flex; flex-wrap: wrap; gap: 16px; }
.socials a { color: var(--forest); }
.course-hero { padding: 84px 0 56px; text-align: center; }
.course-hero h1 { font-size: clamp(2.8rem, 6vw, 5.2rem); max-width: 900px; margin-left: auto; margin-right: auto; }
.course-hero .lead { margin-left: auto; margin-right: auto; }
.levels { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; align-items: start; }
.level { padding: clamp(28px, 4vw, 46px); border: 1px solid var(--line); border-radius: 28px; background: var(--white); }
.level-featured { border: 2px solid var(--gold); box-shadow: var(--shadow); }
.price { color: var(--forest); font-size: 2.4rem; font-weight: 800; margin: 12px 0 0; }
.price-note { color: var(--brown); font-size: .9rem; }
.checklist { padding: 0; list-style: none; }
.checklist li { position: relative; padding: 9px 0 9px 28px; border-bottom: 1px solid var(--line); }
.checklist li::before { content: "✓"; position: absolute; left: 0; color: var(--gold); font-weight: 900; }
.faq { max-width: 860px; margin: 0 auto; }
details { background: var(--white); border: 1px solid var(--line); border-radius: 18px; padding: 18px 22px; margin: 12px 0; }
summary { cursor: pointer; font-weight: 800; color: var(--forest); }
.notice { padding: 18px 22px; border-radius: 16px; background: rgba(181,138,59,.12); color: var(--brown); font-size: .92rem; }

@media (max-width: 820px) {
  .menu-button { display: block; }
  .nav-links { display: none; position: absolute; top: 72px; left: 20px; right: 20px; padding: 20px; flex-direction: column; align-items: stretch; background: var(--white); border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow); }
  .nav-links.open { display: flex; }
  .hero-grid, .story, .course-band, .levels { grid-template-columns: 1fr; }
  .hero { padding-top: 58px; }
  .chart-art { min-height: 340px; }
  .orbit { width: 300px; height: 300px; }
  .grid-3 { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .container { width: min(100% - 28px, 1120px); }
  h1 { font-size: 3rem; }
  .button { width: 100%; }
  .chart-art { min-height: 300px; }
  .orbit { width: 260px; height: 260px; }
}