:root {
  --white: #fff;
  --ink: #063b2c;
  --body: #263a31;
  --muted: #5b6f66;
  --green: #219653;
  --fresh: #5ec747;
  --lime: #b9eb3f;
  --mint: #e9fff4;
  --mint-line: #c7f2d8;
  --yellow: #ffd600;
  --line: rgba(6, 59, 44, .16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--white);
  color: var(--body);
  font-family: "Noto Sans TC", system-ui, sans-serif;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.75;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3,
.brand strong,
.eyebrow,
.button,
.visual-orbit strong,
.curriculum-list span,
.style-grid span,
.price {
  font-family: "Nunito", "Noto Sans TC", system-ui, sans-serif;
}

h1 {
  max-width: 900px;
  margin-bottom: 22px;
  color: var(--ink);
  font-size: clamp(54px, 8vw, 104px);
  font-weight: 900;
  line-height: .92;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 16px;
  color: var(--ink);
  font-size: clamp(34px, 5vw, 60px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  color: var(--ink);
  font-size: clamp(23px, 3vw, 32px);
  font-weight: 900;
  line-height: 1.18;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px clamp(20px, 5vw, 76px);
  border-bottom: 2px solid var(--mint-line);
  background: rgba(255, 255, 255, .94);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  outline: 3px solid rgba(255, 214, 0, .18);
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  color: var(--ink);
  font-size: 18px;
  font-weight: 900;
  line-height: 1.1;
}

.brand small {
  color: var(--green);
  font-size: 11px;
  font-weight: 800;
  line-height: 1.2;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 20px;
}

.site-nav a {
  color: var(--ink);
  font-size: 14px;
  font-weight: 800;
}

.site-nav a:hover {
  color: var(--green);
}

.site-nav .nav-cta {
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--ink);
  color: #fff;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: #fff;
}

.nav-toggle span {
  width: 18px;
  height: 2px;
  margin-inline: auto;
  border-radius: 999px;
  background: var(--ink);
}

main {
  overflow: hidden;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--green);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}

.button {
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  padding: 13px 22px;
  border-radius: 999px;
  font-weight: 900;
}

.button.primary {
  background: var(--ink);
  color: #fff;
}

.button.secondary {
  border: 2px solid var(--fresh);
  background: #fff;
  color: var(--ink);
}

.course-hero {
  position: relative;
  padding: 26px clamp(20px, 5vw, 76px) clamp(76px, 9vw, 118px);
  background: #fff;
}

.course-hero::after {
  content: "";
  position: absolute;
  right: clamp(20px, 5vw, 76px);
  bottom: 48px;
  left: clamp(20px, 5vw, 76px);
  height: 2px;
  background: var(--mint-line);
}

.course-hero::before {
  content: "";
  position: absolute;
  left: clamp(20px, 5vw, 76px);
  bottom: 48px;
  z-index: 1;
  width: 220px;
  height: 6px;
  border-radius: 999px;
  background: var(--lime);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  max-width: 1180px;
  margin: 0 auto clamp(52px, 7vw, 94px);
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.breadcrumb a:hover {
  color: var(--green);
}

.breadcrumb strong {
  color: var(--ink);
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, .42fr);
  gap: clamp(34px, 7vw, 96px);
  align-items: center;
  max-width: 1180px;
  margin: 0 auto;
}

.hero-lead {
  max-width: 670px;
  margin-bottom: 30px;
  color: var(--muted);
  font-size: 19px;
  font-weight: 700;
}

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

.hero-visual {
  display: flex;
  justify-content: center;
}

.visual-orbit {
  position: relative;
  display: grid;
  width: min(32vw, 390px);
  min-width: 280px;
  aspect-ratio: 1;
  place-items: center;
  border: 4px solid var(--lime);
  border-radius: 46% 54% 48% 52% / 55% 44% 56% 45%;
  background: var(--mint);
}

.visual-orbit::before,
.visual-orbit::after {
  content: "";
  position: absolute;
  border-radius: 50%;
}

.visual-orbit::before {
  inset: 24px;
  border: 2px solid var(--fresh);
  opacity: .5;
}

.visual-orbit::after {
  right: 44px;
  bottom: 54px;
  width: 14px;
  height: 14px;
  background: var(--yellow);
}

.visual-orbit strong {
  color: var(--ink);
  font-size: clamp(108px, 13vw, 168px);
  font-weight: 900;
  line-height: .8;
}

.visual-orbit small {
  color: var(--green);
  font-size: 17px;
  font-weight: 900;
  line-height: 1.15;
  text-align: center;
}

.leaf {
  position: absolute;
  width: 26px;
  height: 42px;
  border-radius: 100% 0 100% 0;
  background: var(--fresh);
}

.leaf-one {
  top: 42px;
  left: 58px;
  transform: rotate(-44deg);
}

.leaf-two {
  right: 44px;
  top: 78px;
  width: 20px;
  height: 34px;
  background: var(--lime);
  transform: rotate(28deg);
}

.leaf-three {
  right: 72px;
  bottom: 62px;
  width: 18px;
  height: 30px;
  transform: rotate(60deg);
}

.section {
  position: relative;
  padding: clamp(74px, 9vw, 122px) clamp(20px, 5vw, 76px);
  background: #fff;
}

.section::before {
  content: "";
  position: absolute;
  top: 0;
  right: clamp(20px, 5vw, 76px);
  left: clamp(20px, 5vw, 76px);
  height: 1px;
  background: var(--mint-line);
}

.section-head {
  max-width: 860px;
  margin-bottom: 40px;
}

.section-head.wide {
  max-width: 980px;
}

.section-head .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}