:root {
  --bg: #070a10;
  --bg-soft: #0a0f1a;
  --surface: rgba(255, 255, 255, 0.035);
  --surface-strong: rgba(255, 255, 255, 0.055);
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.18);
  --text: #f6f4fb;
  --muted: #9994ac;
  --soft: #cbc6db;
  --blue-300: #8ec5fb;
  --blue-400: #5aa4f7;
  --blue-500: #3184ef;
  --blue-600: #1c63d6;
  --blue-700: #12408f;
  --green: #3ddc91;
  --red: #ff5c5c;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.5);
  --glow: 0 0 120px rgba(49, 132, 239, 0.28);
  --radius: 16px;
  --radius-sm: 10px;
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  font-family: "Poppins", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 78%);
}

body::after {
  content: "";
  position: fixed;
  top: -20vw;
  left: 50%;
  width: 90vw;
  height: 90vw;
  max-width: 1100px;
  max-height: 1100px;
  transform: translateX(-50%);
  pointer-events: none;
  z-index: 0;
  background: radial-gradient(circle, rgba(49, 132, 239, 0.22), transparent 62%);
  filter: blur(20px);
}

a {
  color: inherit;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 30;
  border-radius: var(--radius-sm);
  background: var(--text);
  color: var(--bg);
  padding: 0.6rem 0.8rem;
  transition: top 180ms ease;
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  position: fixed;
  left: 50%;
  top: 1rem;
  z-index: 10;
  width: min(calc(100% - 2rem), 1120px);
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.6rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(8, 12, 20, 0.72);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow);
}

.brand,
.nav-links,
.site-footer nav,
.hero-actions,
.hero-status {
  display: flex;
  align-items: center;
}

.brand {
  gap: 0.65rem;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.01em;
  padding-left: 0.35rem;
}

.brand img {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  object-fit: contain;
}

.nav-links {
  gap: 0.2rem;
}

.nav-links a {
  border-radius: 999px;
  padding: 0.6rem 0.9rem;
  text-decoration: none;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 500;
  transition: color 180ms ease, background 180ms ease;
}

.nav-links a:hover {
  background: var(--surface-strong);
  color: var(--text);
}

.header-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0.6rem 1.1rem;
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
  color: #fff;
  border: 1px solid transparent;
  background:
    linear-gradient(180deg, #1c63d6, #3184ef) padding-box,
    linear-gradient(180deg, #5aa4f7, #12408f) border-box;
  transition: transform 180ms ease, filter 180ms ease;
}

.header-action:hover {
  transform: translateY(-1px);
  filter: brightness(1.08);
}

.hero {
  position: relative;
  z-index: 1;
  min-height: 92vh;
  display: grid;
  align-items: center;
  padding: 8rem max(1.25rem, calc((100vw - 1120px) / 2)) 5.5rem;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(90, 164, 247, 0.55), transparent);
}

.hero-mark {
  position: absolute;
  right: max(-7rem, calc((100vw - 1120px) / 2 - 6rem));
  top: 50%;
  width: min(68vw, 780px);
  height: auto;
  transform: translateY(-48%);
  opacity: 0.16;
  filter: drop-shadow(0 0 90px rgba(49, 132, 239, 0.35));
  user-select: none;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(120deg, rgba(7, 10, 16, 0.05), rgba(7, 10, 16, 0.94) 65%),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.03) 1px, transparent 1px, transparent 140px);
}

.hero-content {
  position: relative;
  max-width: 820px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 1.25rem;
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--blue-300);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 1.1rem;
  font-size: clamp(3.6rem, 11vw, 7.5rem);
  font-weight: 700;
  line-height: 0.98;
  letter-spacing: -0.02em;
}

.text-gradient {
  background: linear-gradient(135deg, var(--blue-300), var(--blue-500) 60%, var(--blue-700));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-copy {
  max-width: 640px;
  margin-bottom: 2.25rem;
  color: var(--soft);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  font-weight: 400;
  line-height: 1.65;
}

.hero-actions {
  flex-wrap: wrap;
  gap: 0.85rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 52px;
  border-radius: var(--radius-sm);
  padding: 0 1.4rem;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.98rem;
  border: 1px solid transparent;
  transition: transform 180ms ease, filter 180ms ease, border-color 180ms ease, background 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: #fff;
  background:
    linear-gradient(180deg, #1c63d6, #3184ef) padding-box,
    linear-gradient(180deg, #5aa4f7, #12408f) border-box;
  box-shadow: 0 16px 40px rgba(28, 99, 214, 0.4);
}

.button-primary:hover {
  filter: brightness(1.08);
}

.button-secondary {
  color: var(--text);
  background:
    linear-gradient(180deg, #12161f, #0e1119) padding-box,
    linear-gradient(180deg, var(--line-strong), transparent) border-box;
}

.button-secondary:hover {
  background:
    linear-gradient(180deg, #10151f, #0d121a) padding-box,
    linear-gradient(180deg, var(--blue-400), var(--blue-700)) border-box;
}

.hero-status {
  position: absolute;
  left: max(1.25rem, calc((100vw - 1120px) / 2));
  bottom: 1.6rem;
  gap: 0.55rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.status-dot {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 999px;
  background: var(--green);
  box-shadow: 0 0 0 6px rgba(61, 220, 145, 0.14);
}

.section {
  position: relative;
  z-index: 1;
  width: min(calc(100% - 2rem), 1120px);
  margin: 0 auto;
  padding: 5.5rem 0;
}

.section-intro {
  padding-top: 3rem;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1fr);
  gap: 2rem;
  align-items: end;
  margin-bottom: 2.5rem;
}

.section-heading.compact {
  display: block;
  max-width: 720px;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(1.9rem, 4vw, 3.2rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.01em;
}

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

.category-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.28);
  padding: 1.5rem;
  transition: transform 220ms var(--ease), border-color 220ms ease, background 220ms ease;
}

.category-card:hover {
  transform: translateY(-4px);
  border-color: var(--blue-700);
  background: var(--surface-strong);
}

.category-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  margin-bottom: 1.25rem;
  border-radius: var(--radius-sm);
  background:
    linear-gradient(180deg, #131926, #0f141e) padding-box,
    linear-gradient(180deg, var(--blue-500), var(--blue-700)) border-box;
  border: 1px solid transparent;
  color: var(--blue-300);
  font-size: 1.1rem;
}

.category-card h3 {
  margin-bottom: 0.5rem;
  font-size: 1.15rem;
  font-weight: 600;
}

.category-card p {
  margin-bottom: 1rem;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.3rem 0.7rem;
  color: var(--soft);
  font-size: 0.78rem;
  font-weight: 500;
  background: rgba(255, 255, 255, 0.02);
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 820px;
}

.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem 1.35rem;
  cursor: pointer;
  list-style: none;
  font-weight: 600;
  font-size: 1rem;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  color: var(--blue-300);
  font-size: 1.1rem;
  font-weight: 400;
  transition: transform 220ms ease, background 220ms ease;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
  background: var(--surface-strong);
}

.faq-item p {
  margin: 0 1.35rem 1.25rem;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.65;
  max-width: 640px;
}

.link-section {
  padding-bottom: 6.5rem;
}

.link-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.9rem;
}

.quick-link {
  position: relative;
  min-height: 150px;
  padding: 1.1rem;
  text-decoration: none;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.24);
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.quick-link::after {
  content: "Open →";
  position: absolute;
  left: 1.1rem;
  bottom: 1.1rem;
  color: var(--blue-300);
  font-size: 0.82rem;
  font-weight: 600;
}

.quick-link:hover {
  transform: translateY(-4px);
  border-color: var(--blue-500);
  background: var(--surface-strong);
}

.quick-link span {
  display: block;
  margin-bottom: 0.45rem;
  font-size: 1.1rem;
  font-weight: 600;
}

.quick-link strong {
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 400;
  line-height: 1.45;
}

.site-footer {
  position: relative;
  z-index: 1;
  width: min(calc(100% - 2rem), 1120px);
  margin: 0 auto;
  padding: 1.5rem 0 2.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer nav {
  gap: 1.25rem;
}

.site-footer a {
  color: var(--muted);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--text);
}

[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 600ms var(--ease), transform 600ms var(--ease);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 900px) {
  .nav-links {
    display: none;
  }

  .hero {
    min-height: 88vh;
  }

  .hero-mark {
    right: -38vw;
    width: 115vw;
    opacity: 0.12;
  }

  .section-heading,
  .category-grid,
  .link-grid {
    grid-template-columns: 1fr;
  }

  .category-card,
  .quick-link {
    min-height: auto;
  }
}

@media (max-width: 560px) {
  .site-header {
    width: calc(100% - 1rem);
    top: 0.5rem;
  }

  .brand span {
    display: none;
  }

  .header-action {
    padding-inline: 0.75rem;
  }

  .hero {
    min-height: 90vh;
    padding-top: 7rem;
  }

  h1 {
    font-size: clamp(3.2rem, 16vw, 5rem);
  }

  .button {
    width: 100%;
  }

  .faq-item summary {
    font-size: 0.94rem;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}