:root {
  --ink: #4b3024;
  --muted: #7c6253;
  --paper: #fffaf3;
  --cream: #f8efe2;
  --line: #ead8bd;
  --gold: #bd7d1f;
  --gold-deep: #936018;
  --green: #06c755;
  --white: #ffffff;
  --shadow: 0 18px 60px rgba(94, 56, 25, 0.13);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Noto Sans TC", system-ui, sans-serif;
  letter-spacing: 0;
}

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

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px clamp(18px, 4vw, 56px);
  background: rgba(255, 250, 243, 0.9);
  border-bottom: 1px solid rgba(234, 216, 189, 0.75);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  min-width: 174px;
}

.brand-mark {
  color: var(--gold);
  font-size: 28px;
}

.brand strong,
.site-footer strong {
  display: block;
  font-family: "Noto Serif TC", serif;
  font-size: 22px;
}

.brand small {
  display: block;
  color: var(--muted);
  font-size: 13px;
  margin-top: 1px;
}

nav {
  display: flex;
  gap: 18px;
  color: var(--muted);
  font-size: 15px;
}

nav a,
.header-cta,
.primary-button,
.secondary-button,
.sticky-cta a,
.site-footer a {
  text-decoration: none;
}

.header-cta,
.primary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 22px;
  border-radius: 999px;
  color: var(--white);
  background: var(--green);
  font-weight: 800;
  box-shadow: 0 10px 28px rgba(6, 199, 85, 0.28);
}

.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 22px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--gold-deep);
  background: rgba(255, 255, 255, 0.62);
  font-weight: 800;
}

.section,
.section-band {
  padding: clamp(64px, 8vw, 110px) clamp(18px, 5vw, 72px);
}

.section-band {
  background:
    radial-gradient(circle at top left, rgba(189, 125, 31, 0.13), transparent 36%),
    linear-gradient(180deg, #fffaf3 0%, #f6eadb 100%);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
  align-items: center;
  gap: clamp(24px, 5vw, 70px);
  min-height: calc(100vh - 76px);
  padding-top: 42px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--gold-deep);
  font-weight: 900;
}

h1,
h2 {
  margin: 0;
  font-family: "Noto Serif TC", serif;
  font-weight: 900;
  line-height: 1.18;
}

h1 {
  font-size: clamp(44px, 7vw, 92px);
}

h1 span {
  color: var(--gold);
}

h2 {
  font-size: clamp(34px, 5vw, 64px);
}

h3 {
  margin: 0;
  font-size: 24px;
  line-height: 1.35;
}

p {
  line-height: 1.85;
}

.lead {
  max-width: 620px;
  color: var(--muted);
  font-size: 20px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 30px 0 24px;
}

.trust-row,
.promise-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.trust-row span,
.promise-grid span {
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.68);
  color: var(--muted);
  font-weight: 700;
}

.hero-media {
  margin: 0;
}

.hero-media img,
.feature-grid img,
.proof-layout img,
.results-card img,
.teacher-image img {
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.hero-media img {
  aspect-ratio: 16 / 9;
  object-fit: cover;
  object-position: center;
}

.section-heading {
  max-width: 860px;
  margin: 0 auto 36px;
  text-align: center;
}

.section-heading p:last-child {
  color: var(--muted);
  font-size: 19px;
}

.concern-grid,
.steps,
.credential-grid,
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  max-width: 1180px;
  margin: 0 auto;
}

.concern-grid article,
.steps article,
.credential-grid article,
.feature-grid article,
.soft-panel,
.faq,
.coupon,
.proof-list article {
  border: 1px solid rgba(234, 216, 189, 0.9);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: var(--shadow);
}

.concern-grid article,
.steps article,
.credential-grid article,
.proof-list article {
  padding: 26px;
}

.concern-grid span,
.steps small,
.coupon span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 6px 14px;
  border-radius: 999px;
  color: var(--gold-deep);
  background: #f5e2c6;
  font-weight: 900;
}

.concern-grid h3,
.steps h3 {
  margin-top: 16px;
}

.concern-grid p,
.steps p,
.credential-grid span,
.feature-grid p,
.proof-list p {
  color: var(--muted);
}

.soft-panel {
  max-width: 980px;
  margin: 26px auto 0;
  padding: 26px;
  text-align: center;
}

.soft-panel strong {
  font-family: "Noto Serif TC", serif;
  font-size: 26px;
}

.steps {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.promise-grid {
  justify-content: center;
  max-width: 980px;
  margin: 28px auto 0;
}

.teacher {
  display: grid;
  grid-template-columns: minmax(320px, 0.82fr) minmax(0, 1.18fr);
  align-items: center;
  gap: clamp(26px, 5vw, 70px);
  max-width: 1280px;
  margin: 0 auto;
}

.teacher-copy p {
  color: var(--muted);
  font-size: 18px;
}

.credential-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 26px;
}

.credential-grid strong {
  display: block;
  margin-bottom: 10px;
  font-size: 21px;
}

.feature-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature-grid article {
  overflow: hidden;
}

.feature-grid img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 8px 8px 0 0;
  box-shadow: none;
}

.feature-grid h3,
.feature-grid p {
  padding: 0 22px;
}

.feature-grid h3 {
  margin-top: 20px;
}

.feature-grid p {
  padding-bottom: 22px;
}

.proof-layout,
.results-card,
.gift {
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(320px, 0.94fr);
  gap: 28px;
  align-items: center;
  max-width: 1180px;
  margin: 0 auto;
}

.proof-list {
  display: grid;
  gap: 16px;
}

.results-card {
  align-items: start;
}

.results-card > div {
  padding: 30px;
}

.results-card h3 {
  font-family: "Noto Serif TC", serif;
  font-size: 34px;
}

.note {
  color: var(--gold-deep);
  font-weight: 700;
}

.gift {
  align-items: stretch;
}

.gift-copy {
  padding: clamp(28px, 5vw, 54px);
  border-radius: 8px;
  color: var(--white);
  background: linear-gradient(135deg, #315c3b 0%, #1f3e2a 100%);
}

.gift-copy h2,
.gift-copy .eyebrow {
  color: var(--white);
}

.gift-copy p {
  color: rgba(255, 255, 255, 0.88);
}

.coupon {
  display: inline-grid;
  gap: 4px;
  margin: 12px 0 24px;
  padding: 24px 32px;
  color: var(--ink);
}

.coupon strong {
  color: #a62828;
  font-family: "Noto Serif TC", serif;
  font-size: clamp(48px, 6vw, 78px);
  line-height: 1;
}

.faq {
  padding: 28px;
}

.faq h3 {
  margin-bottom: 14px;
  font-family: "Noto Serif TC", serif;
  font-size: 34px;
}

details {
  border-top: 1px solid var(--line);
  padding: 18px 0;
}

summary {
  cursor: pointer;
  font-weight: 900;
  font-size: 19px;
}

details p {
  margin-bottom: 0;
  color: var(--muted);
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 16px 28px;
  padding: 34px 20px 112px;
  color: var(--muted);
  background: #fff6ea;
  border-top: 1px solid var(--line);
  text-align: center;
}

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

.sticky-cta {
  position: fixed;
  right: 18px;
  bottom: 18px;
  left: 18px;
  z-index: 30;
  display: flex;
  justify-content: center;
  pointer-events: none;
}

.sticky-cta a {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  width: min(720px, 100%);
  min-height: 68px;
  padding: 12px 24px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 999px;
  color: var(--white);
  background: linear-gradient(135deg, #0ba552 0%, #057a3d 100%);
  box-shadow: 0 16px 42px rgba(18, 95, 52, 0.35);
  pointer-events: auto;
}

.sticky-cta strong {
  font-size: 22px;
}

.sticky-cta span {
  opacity: 0.9;
}

@media (max-width: 980px) {
  nav {
    display: none;
  }

  .hero,
  .teacher,
  .proof-layout,
  .results-card,
  .gift {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .concern-grid,
  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 680px) {
  .site-header {
    gap: 12px;
    padding: 12px 14px;
  }

  .brand {
    min-width: 0;
  }

  .brand strong {
    font-size: 18px;
  }

  .brand small,
  .header-cta {
    font-size: 12px;
  }

  .header-cta {
    min-height: 40px;
    padding: 9px 12px;
  }

  .section,
  .section-band {
    padding: 52px 16px;
  }

  .hero {
    padding-top: 28px;
  }

  .lead {
    font-size: 17px;
  }

  .concern-grid,
  .steps,
  .credential-grid,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .teacher-image img {
    aspect-ratio: 4 / 3;
    object-fit: cover;
    object-position: left center;
  }

  .sticky-cta a {
    min-height: 62px;
    flex-direction: column;
    gap: 2px;
    border-radius: 8px;
  }

  .sticky-cta strong {
    font-size: 18px;
  }
}