:root {
  --color-ink: #1b2a4a;
  --color-ink-soft: #3a4a6b;
  --color-paper: #faf6ef;
  --color-paper-dim: #f1ead9;
  --color-surface: #ffffff;
  --color-accent: #c9922e;
  --color-accent-deep: #9c6d1c;
  --color-accent-soft: #f3e0bb;
  --color-line: #e4dbc7;
  --color-success: #3f7a52;

  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Source Sans 3", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --text-base: clamp(1rem, 0.94rem + 0.3vw, 1.0625rem);
  --text-lede: clamp(1.05rem, 0.98rem + 0.4vw, 1.2rem);
  --text-h1: clamp(2.1rem, 1.4rem + 3.2vw, 3.6rem);
  --text-h2: clamp(1.6rem, 1.3rem + 1.4vw, 2.4rem);
  --text-h3: clamp(1.1rem, 1rem + 0.5vw, 1.3rem);

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.75rem;
  --space-lg: clamp(2.5rem, 2rem + 2vw, 4rem);
  --space-section: clamp(4rem, 3rem + 5vw, 7.5rem);

  --radius-card: 14px;
  --radius-pill: 999px;

  --duration-fast: 150ms;
  --duration-normal: 280ms;
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-card: 0 1px 2px rgba(27, 42, 74, 0.06), 0 12px 28px -12px rgba(27, 42, 74, 0.18);
  --shadow-lift: 0 4px 10px rgba(27, 42, 74, 0.08), 0 24px 48px -20px rgba(27, 42, 74, 0.28);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-ink);
  background: var(--color-paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 0.5em;
  color: var(--color-ink);
}

p { margin: 0 0 1em; }
a { color: var(--color-accent-deep); }

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-ink);
  color: #fff;
  padding: 0.75rem 1.25rem;
  z-index: 200;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 246, 239, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-line);
}
.nav-wrap {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0.9rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.brand {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.15rem;
  text-decoration: none;
  color: var(--color-ink);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.brand-mark { color: var(--color-accent); font-size: 1.2rem; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}
.nav-links a {
  text-decoration: none;
  color: var(--color-ink-soft);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color var(--duration-fast) var(--ease-out-expo);
}
.nav-links a:hover, .nav-links a:focus-visible { color: var(--color-accent-deep); }
.nav-cta {
  background: var(--color-ink);
  color: #fff !important;
  padding: 0.5rem 1.1rem;
  border-radius: var(--radius-pill);
}
.nav-cta:hover { background: var(--color-accent-deep); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}
.nav-toggle span {
  width: 22px; height: 2px;
  background: var(--color-ink);
  border-radius: 2px;
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--color-paper);
    flex-direction: column;
    align-items: flex-start;
    padding: 1rem 1.5rem 1.5rem;
    border-bottom: 1px solid var(--color-line);
    display: none;
    gap: 1rem;
  }
  .nav-links.is-open { display: flex; }
  .nav-cta { align-self: flex-start; }
}

/* ---------- Sections shared ---------- */
main > section {
  padding: var(--space-section) 1.5rem;
  max-width: 1180px;
  margin: 0 auto;
}
.section-head { max-width: 720px; margin-bottom: var(--space-lg); }
.section-head--light .eyebrow { color: var(--color-accent-deep); }
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-accent-deep);
  margin: 0 0 0.6em;
}
.section-lede { font-size: var(--text-lede); color: var(--color-ink-soft); }

/* ---------- Hero ---------- */
.hero {
  padding-top: clamp(3rem, 2rem + 4vw, 6rem);
  position: relative;
}
.hero-inner { max-width: 860px; }
.hero h1 { font-size: var(--text-h1); }
.hero-sub { font-size: var(--text-lede); color: var(--color-ink-soft); max-width: 640px; }
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; margin: var(--space-md) 0 var(--space-lg); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.85rem 1.6rem;
  border-radius: var(--radius-pill);
  font-weight: 600;
  text-decoration: none;
  font-size: 1rem;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease-out-expo),
              background var(--duration-fast) var(--ease-out-expo),
              box-shadow var(--duration-fast) var(--ease-out-expo);
}
.btn-primary {
  background: var(--color-accent);
  color: var(--color-ink);
  box-shadow: var(--shadow-card);
}
.btn-primary:hover { background: var(--color-accent-deep); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow-lift); }
.btn-primary:focus-visible { outline: 3px solid var(--color-ink); outline-offset: 2px; }
.btn-ghost {
  background: transparent;
  border-color: var(--color-ink);
  color: var(--color-ink);
}
.btn-ghost:hover { background: var(--color-ink); color: #fff; transform: translateY(-1px); }

.hero-stats {
  display: flex;
  gap: var(--space-lg);
  margin: 0;
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-line);
}
.hero-stats div { display: flex; flex-direction: column; gap: 0.2rem; }
.hero-stats dt { font-family: var(--font-display); font-size: 1.6rem; font-weight: 600; color: var(--color-accent-deep); }
.hero-stats dd { margin: 0; font-size: 0.85rem; color: var(--color-ink-soft); }

/* ---------- Problem ---------- */
.problem { background: var(--color-paper); }
.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}
.problem-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  padding: var(--space-md);
  box-shadow: var(--shadow-card);
  transition: transform var(--duration-normal) var(--ease-out-expo), box-shadow var(--duration-normal) var(--ease-out-expo);
}
.problem-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lift); }
.problem-card--accent { background: var(--color-ink); color: #fff; border-color: var(--color-ink); }
.problem-card--accent h3, .problem-card--accent p { color: #fff; }
.problem-icon { font-size: 1.8rem; margin-bottom: 0.6rem; }
.problem-card h3 { font-size: var(--text-h3); }
.problem-card p { color: var(--color-ink-soft); margin: 0; }
.problem-card--accent p { color: rgba(255,255,255,0.82); }

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

/* ---------- Scope ---------- */
.scope { background: var(--color-paper-dim); border-top: 1px solid var(--color-line); border-bottom: 1px solid var(--color-line); }
.scope-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-md);
}
.scope-item {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: var(--space-md);
  align-items: start;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  padding: var(--space-md);
}
.scope-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.4rem;
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: var(--color-accent-soft);
  color: var(--color-accent-deep);
}
.scope-item h3 { font-size: var(--text-h3); margin-bottom: 0.3em; }
.scope-item p { color: var(--color-ink-soft); margin: 0; }
.scope-footnote {
  margin-top: var(--space-lg);
  font-size: 0.9rem;
  color: var(--color-ink-soft);
  border-left: 3px solid var(--color-accent);
  padding-left: 1rem;
}

@media (max-width: 640px) {
  .scope-item { grid-template-columns: 1fr; }
}

/* ---------- Worked example ---------- */
.example { background: var(--color-paper); }
.example-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-lg);
  align-items: start;
}
.example-label {
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-ink-soft);
  margin-bottom: 0.8rem;
}

.mock-paylink {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: 18px;
  padding: var(--space-lg) var(--space-md);
  box-shadow: var(--shadow-lift);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.mock-paylink::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-ink));
}
.mock-paylink-brand {
  display: flex; align-items: center; justify-content: center; gap: 0.5rem;
  font-family: var(--font-display); font-weight: 600; font-size: 1.05rem;
  margin-bottom: var(--space-md);
}
.mock-paylink-mark { color: var(--color-accent); }
.mock-paylink-item { color: var(--color-ink-soft); font-weight: 600; margin-bottom: 0.2em; }
.mock-paylink-amount { font-family: var(--font-display); font-size: 2.4rem; font-weight: 700; margin-bottom: 0.3em; }
.mock-paylink-desc { font-size: 0.88rem; color: var(--color-ink-soft); }
.mock-paylink-btn {
  background: var(--color-ink);
  color: #fff;
  border-radius: var(--radius-pill);
  padding: 0.85rem 1.5rem;
  font-weight: 600;
  margin: var(--space-sm) auto 0.6rem;
  max-width: 260px;
}
.mock-paylink-foot { font-size: 0.75rem; color: var(--color-ink-soft); margin: 0; }

.reminder-msg {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-left: 4px solid var(--color-ink);
  border-radius: 10px;
  padding: var(--space-sm) var(--space-md);
  margin-bottom: var(--space-sm);
}
.reminder-msg--accent { border-left-color: var(--color-accent); background: var(--color-accent-soft); }
.reminder-meta { display: flex; gap: 0.6rem; align-items: center; margin-bottom: 0.4rem; }
.reminder-day { font-weight: 700; font-size: 0.8rem; color: var(--color-ink); }
.reminder-channel {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--color-ink);
  color: #fff;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-pill);
}
.reminder-subject { font-weight: 600; margin-bottom: 0.3em; }
.reminder-body { color: var(--color-ink-soft); font-size: 0.92rem; margin: 0; }
.example-note { font-size: 0.85rem; color: var(--color-ink-soft); margin-top: var(--space-sm); }

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

/* ---------- Order / pricing ---------- */
.order { background: var(--color-ink); border-radius: 24px; margin-top: var(--space-section); margin-bottom: var(--space-section); color: #fff; }
.order-card { padding: var(--space-lg) var(--space-md); max-width: 720px; margin: 0 auto; }
.order .eyebrow { color: var(--color-accent); }
.order h2 { color: #fff; }
.order-price { font-family: var(--font-display); font-size: 2rem; margin-bottom: var(--space-md); }
.order-price span { color: var(--color-accent); font-weight: 700; }
.order-scope {
  list-style: none;
  margin: 0 0 var(--space-lg);
  padding: 0;
  display: grid;
  gap: 0.6rem;
}
.order-scope li {
  padding-left: 1.6rem;
  position: relative;
  color: rgba(255,255,255,0.85);
}
.order-scope li::before {
  content: "\2713";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
}

.order-pay { background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.14); border-radius: var(--radius-card); padding: var(--space-md); margin-bottom: var(--space-lg); }
.order-pay h3 { color: #fff; font-size: var(--text-h3); }
.order-pay p { color: rgba(255,255,255,0.8); }
.pay-options { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-md); margin-top: var(--space-sm); }
.pay-option-label { font-weight: 600; color: #fff; margin-bottom: 0.4em; }
.pay-note { font-size: 0.8rem; color: rgba(255,255,255,0.65); margin-top: 0.4em; }
.wallet-addr {
  display: block;
  word-break: break-all;
  background: rgba(0,0,0,0.25);
  padding: 0.6rem 0.8rem;
  border-radius: 8px;
  font-size: 0.82rem;
  color: var(--color-accent-soft);
}
.order-pay .btn-ghost { border-color: #fff; color: #fff; }
.order-pay .btn-ghost:hover { background: #fff; color: var(--color-ink); }

@media (max-width: 640px) {
  .pay-options { grid-template-columns: 1fr; }
}

/* ---------- Enquiry form ---------- */
.enquiry-form {
  background: var(--color-surface);
  color: var(--color-ink);
  border-radius: var(--radius-card);
  padding: var(--space-lg) var(--space-md);
}
.enquiry-form h3 { font-size: var(--text-h3); }
.form-lede { color: var(--color-ink-soft); font-size: 0.92rem; }
.form-row { margin-bottom: var(--space-sm); display: flex; flex-direction: column; gap: 0.35rem; }
.form-row label { font-weight: 600; font-size: 0.9rem; }
.form-row input, .form-row select, .form-row textarea {
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 0.65rem 0.8rem;
  border: 1.5px solid var(--color-line);
  border-radius: 8px;
  background: var(--color-paper);
  color: var(--color-ink);
}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus {
  outline: none;
  border-color: var(--color-accent-deep);
  box-shadow: 0 0 0 3px var(--color-accent-soft);
}
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
#submitBtn { width: 100%; justify-content: center; margin-top: var(--space-sm); }
.form-status { margin-top: var(--space-sm); font-weight: 600; min-height: 1.2em; }
.form-status[data-state="success"] { color: var(--color-success); }
.form-status[data-state="error"] { color: #b3413a; }

/* ---------- FAQ ---------- */
.faq { background: var(--color-paper); }
.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md) var(--space-lg);
}
.faq-item h3 { font-size: 1.05rem; }
.faq-item p { color: var(--color-ink-soft); margin: 0; }
@media (max-width: 768px) { .faq-grid { grid-template-columns: 1fr; } }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-ink);
  color: rgba(255,255,255,0.75);
  padding: var(--space-lg) 1.5rem;
  font-size: 0.85rem;
}
.footer-inner { max-width: 1180px; margin: 0 auto; }
.footer-inner a { color: var(--color-accent); }
.footer-note { color: rgba(255,255,255,0.55); }