:root {
  --ink: #17212b;
  --muted: #596674;
  --line: #d9e0e6;
  --paper: #f7f9fb;
  --white: #ffffff;
  --teal: #0f766e;
  --teal-dark: #0b4f4a;
  --green: #477f37;
  --amber: #b87514;
  --coral: #b24c3a;
  --blue: #315a8c;
  --shadow: 0 20px 60px rgba(23, 33, 43, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  display: grid;
  grid-template-columns: minmax(180px, 1fr) auto auto;
  gap: 24px;
  align-items: center;
  min-height: 72px;
  padding: 12px clamp(18px, 4vw, 56px);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  gap: 12px;
  align-items: center;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 6px;
  color: var(--white);
  background: linear-gradient(135deg, var(--teal), var(--blue));
  font-weight: 800;
  font-size: 0.82rem;
}

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

.brand small {
  color: var(--muted);
  font-size: 0.8rem;
}

.top-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.top-nav a,
.login-button,
.primary-action,
.secondary-action,
.payment-option a {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  padding: 9px 14px;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.93rem;
}

.top-nav a {
  color: var(--muted);
}

.top-nav a:hover {
  color: var(--ink);
  background: #edf2f4;
}

.login-button,
.primary-action {
  color: var(--white);
  background: var(--teal);
}

.login-button:hover,
.primary-action:hover {
  background: var(--teal-dark);
}

.secondary-action {
  color: var(--teal-dark);
  border: 1px solid #95bdb8;
  background: var(--white);
}

main {
  overflow: hidden;
}

.intro-section {
  min-height: calc(100vh - 72px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 420px);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
  padding: clamp(38px, 7vw, 90px) clamp(18px, 6vw, 84px);
  background:
    linear-gradient(110deg, rgba(15, 118, 110, 0.08), rgba(178, 76, 58, 0.05)),
    var(--paper);
}

.intro-copy {
  max-width: 780px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--teal-dark);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  max-width: 820px;
  margin-bottom: 18px;
  font-size: clamp(2.3rem, 5vw, 4.7rem);
  line-height: 1.04;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 12px;
  font-size: clamp(1.8rem, 3vw, 3rem);
  line-height: 1.1;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.15rem;
  letter-spacing: 0;
}

.intro-copy p {
  max-width: 690px;
  color: var(--muted);
  font-size: 1.12rem;
}

.quick-actions,
.support-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.status-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.status-header {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-bottom: 20px;
}

.status-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 6px rgba(71, 127, 55, 0.14);
}

.status-panel dl {
  display: grid;
  gap: 14px;
  margin: 0;
}

.status-panel div {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 12px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.status-panel dt {
  color: var(--muted);
  font-weight: 700;
}

.status-panel dd {
  margin: 0;
}

.band {
  padding: 18px clamp(18px, 6vw, 84px);
  background: var(--ink);
}

.nav-band {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
}

.nav-band a {
  min-height: 76px;
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 18px;
  color: var(--white);
  background: rgba(255, 255, 255, 0.08);
  text-decoration: none;
  font-weight: 800;
}

.nav-band span {
  color: #a7d8d2;
}

.content-section {
  padding: clamp(48px, 7vw, 88px) clamp(18px, 6vw, 84px);
  background: var(--white);
}

.content-section + .content-section {
  border-top: 1px solid var(--line);
}

.section-heading {
  max-width: 780px;
  margin-bottom: 28px;
}

.section-heading p {
  color: var(--muted);
  font-size: 1.05rem;
}

.guide-list {
  display: grid;
  grid-template-columns: repeat(5, minmax(220px, 1fr));
  gap: 14px;
  overflow-x: auto;
  padding-bottom: 8px;
}

.guide-item,
.payment-option {
  min-height: 260px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
  background: var(--white);
}

.guide-item:nth-child(2) {
  border-top: 4px solid var(--blue);
}

.guide-item:nth-child(3) {
  border-top: 4px solid var(--green);
}

.guide-item:nth-child(4) {
  border-top: 4px solid var(--amber);
}

.guide-item:nth-child(5) {
  border-top: 4px solid var(--coral);
}

.guide-item:first-child {
  border-top: 4px solid var(--teal);
}

ol {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
}

li + li {
  margin-top: 8px;
}

.accent-section {
  background: #eef6f4;
}

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

.payment-option p {
  min-height: 48px;
  color: var(--muted);
}

.payment-option a {
  width: 100%;
  margin-top: 14px;
  color: var(--white);
  background: var(--ink);
}

.payment-option:nth-child(2) a {
  background: var(--blue);
}

.payment-option:nth-child(3) a {
  background: var(--green);
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(300px, 1fr);
  gap: clamp(24px, 5vw, 72px);
  align-items: start;
}

.security-list {
  display: grid;
  gap: 12px;
}

.security-list p {
  margin: 0;
  border-left: 4px solid var(--teal);
  padding: 14px 16px;
  background: var(--paper);
}

.support-section {
  background:
    linear-gradient(90deg, rgba(178, 76, 58, 0.08), rgba(71, 127, 55, 0.08)),
    var(--white);
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding: 28px clamp(18px, 6vw, 84px);
  color: #dbe4ea;
  background: var(--ink);
}

@media (max-width: 920px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .top-nav {
    grid-column: 1 / -1;
    order: 3;
  }

  .intro-section,
  .split-section {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .nav-band,
  .payment-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .site-header {
    gap: 12px;
  }

  .brand small,
  .top-nav {
    display: none;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
  }

  .login-button {
    padding-inline: 11px;
  }

  .intro-section,
  .content-section,
  .band {
    padding-inline: 16px;
  }

  h1 {
    font-size: 2.25rem;
  }

  .status-panel div,
  .nav-band,
  .payment-grid {
    grid-template-columns: 1fr;
  }

  .guide-list {
    grid-template-columns: 1fr;
    overflow-x: visible;
  }
}