:root {
  --bg: #0a0a10;
  --bg-elev: #14141c;
  --bg-subtle: #1c1c25;
  --bg-card: #161620;
  --border: #2a2a36;
  --border-strong: #3a3a48;
  --fg: #ececf2;
  --fg-muted: #a5a5b3;
  --fg-subtle: #6f6f80;
  --accent: #7c3aed;
  --accent-hover: #6d28d9;
  --accent-fg: #ffffff;
  --add-fg: #4ade80;
  --del-fg: #f87171;
  --shadow-lg: 0 24px 48px -12px rgba(0, 0, 0, 0.6);
  --shadow-md: 0 12px 24px -8px rgba(0, 0, 0, 0.4);
  --radius: 12px;
  --radius-sm: 8px;
  --content-max: 1180px;
  --hero-max: 1280px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

html {
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell,
    "Helvetica Neue", sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  line-height: 1.55;
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  background:
    radial-gradient(1200px 600px at 50% -200px, rgba(124, 58, 237, 0.18), transparent 60%),
    radial-gradient(800px 400px at 100% 10%, rgba(124, 58, 237, 0.08), transparent 70%),
    var(--bg);
  background-attachment: fixed;
  min-height: 100vh;
}

a {
  color: var(--fg);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--accent);
}

p {
  color: var(--fg-muted);
  margin: 0 0 1em;
}

h1,
h2,
h3,
h4 {
  color: var(--fg);
  margin: 0 0 0.6em;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

code,
kbd,
pre {
  font-family: "JetBrains Mono", "Fira Code", "Cascadia Code", Consolas, ui-monospace, monospace;
}

code {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 6px;
  font-size: 0.88em;
  color: var(--fg);
}

kbd {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 5px;
  padding: 1px 6px;
  font-size: 0.82em;
  color: var(--fg);
  font-family: "JetBrains Mono", Consolas, ui-monospace, monospace;
}

.container {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============ Header ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  background: rgba(10, 10, 16, 0.7);
  border-bottom: 1px solid var(--border);
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 1rem;
  color: var(--fg);
}

.brand:hover {
  color: var(--fg);
}

.brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  object-fit: cover;
}

.nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav a {
  color: var(--fg-muted);
  font-size: 0.92rem;
  font-weight: 500;
}

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

.nav-cta {
  background: var(--accent);
  color: var(--accent-fg) !important;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.nav-cta:hover {
  background: var(--accent-hover);
  color: var(--accent-fg) !important;
}

.nav-ghost {
  color: var(--fg) !important;
}

/* ============ Hero ============ */
.hero {
  padding: 80px 0 40px;
}

.eyebrow {
  display: inline-block;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  color: var(--fg-muted);
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 500;
  margin-bottom: 24px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.hero-title {
  font-size: clamp(2.2rem, 5.5vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.05;
  margin: 0 0 24px;
  max-width: 900px;
  background: linear-gradient(180deg, #ffffff 0%, #c5c5d0 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-sub {
  font-size: clamp(1rem, 1.4vw, 1.18rem);
  color: var(--fg-muted);
  max-width: 720px;
  margin: 0 0 36px;
  line-height: 1.6;
}

.cta-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.btn {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  padding: 14px 24px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
  line-height: 1.2;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-fg);
}

.btn-primary:hover {
  background: var(--accent-hover);
  color: var(--accent-fg);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px -8px rgba(124, 58, 237, 0.6);
}

.btn-sub {
  font-size: 0.72rem;
  font-weight: 400;
  opacity: 0.85;
}

.btn-ghost {
  background: var(--bg-subtle);
  border-color: var(--border);
  color: var(--fg);
  align-items: center;
  flex-direction: row;
}

.btn-ghost:hover {
  background: var(--bg-elev);
  border-color: var(--border-strong);
  color: var(--fg);
}

.hero-note {
  font-size: 0.82rem;
  color: var(--fg-subtle);
  margin-top: 8px;
}

.hero-image {
  margin-top: 56px;
  text-align: center;
}

.hero-image img {
  width: 100%;
  max-width: var(--hero-max);
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  display: block;
  margin: 0 auto;
}

.hero-caption {
  margin-top: 20px;
  color: var(--fg-subtle);
  font-size: 0.92rem;
  font-style: italic;
}

/* ============ Value cards ============ */
.value {
  padding: 80px 0 40px;
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.value-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.value-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}

.value-card h3 {
  font-size: 1.05rem;
  margin: 0 0 8px;
  color: var(--fg);
}

.value-card p {
  margin: 0;
  color: var(--fg-muted);
  font-size: 0.92rem;
}

/* ============ Features ============ */
.features {
  padding: 80px 0;
}

.section-title {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 700;
  margin: 0 0 16px;
  letter-spacing: -0.02em;
}

.section-sub {
  color: var(--fg-muted);
  font-size: 1rem;
  margin: 0 0 40px;
  max-width: 720px;
}

.feature {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  align-items: center;
  gap: 56px;
  margin: 80px 0;
}

.feature.reverse {
  grid-template-columns: 1.4fr 1fr;
}

.feature.reverse .feature-text {
  order: 2;
}

.feature.reverse .feature-figure {
  order: 1;
}

.feature-text h3 {
  font-size: clamp(1.4rem, 2vw, 1.7rem);
  margin: 0 0 16px;
  color: var(--fg);
}

.feature-text p {
  color: var(--fg-muted);
  font-size: 1rem;
}

.feature-text em {
  color: var(--fg);
  font-style: normal;
  font-weight: 500;
}

.feature-figure {
  margin: 0;
}

.feature-figure img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  display: block;
}

/* ============ Providers ============ */
.providers {
  padding: 80px 0;
  background: linear-gradient(180deg, transparent 0%, rgba(124, 58, 237, 0.04) 50%, transparent 100%);
}

.providers-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-card);
}

.providers-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.94rem;
  min-width: 700px;
}

.providers-table th {
  text-align: left;
  padding: 14px 20px;
  background: var(--bg-elev);
  color: var(--fg-muted);
  font-weight: 600;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-bottom: 1px solid var(--border);
}

.providers-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  color: var(--fg-muted);
  vertical-align: middle;
}

.providers-table tr:last-child td {
  border-bottom: none;
}

.providers-table tbody tr:hover {
  background: var(--bg-subtle);
}

.providers-table strong {
  color: var(--fg);
}

.tier {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.tier-free {
  background: rgba(74, 222, 128, 0.12);
  color: var(--add-fg);
  border: 1px solid rgba(74, 222, 128, 0.3);
}

.tier-freekey {
  background: rgba(124, 58, 237, 0.14);
  color: #b794f4;
  border: 1px solid rgba(124, 58, 237, 0.35);
}

.tier-paid {
  background: var(--bg-elev);
  color: var(--fg-muted);
  border: 1px solid var(--border);
}

/* ============ About ============ */
.about {
  padding: 80px 0;
}

.about-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 48px;
  align-items: start;
}

.about-text h3 {
  font-size: 1.1rem;
  margin: 32px 0 12px;
  color: var(--fg);
}

.about-text p {
  font-size: 1rem;
  line-height: 1.7;
}

.principles {
  list-style: none;
  padding: 0;
  margin: 0;
}

.principles li {
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  color: var(--fg-muted);
}

.principles li:last-child {
  border-bottom: none;
}

.principles strong {
  color: var(--fg);
}

.about-side {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.about-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.about-card h4 {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fg-subtle);
  font-weight: 600;
  margin: 0 0 8px;
}

.about-card p {
  margin: 0;
  font-size: 0.94rem;
}

.about-card a {
  color: var(--accent);
  font-weight: 500;
}

.about-card a:hover {
  color: #b794f4;
}

.support-card {
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.12), rgba(124, 58, 237, 0.04));
  border-color: rgba(124, 58, 237, 0.3);
}

.support-buttons {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 12px;
}

.btn-bmc,
.btn-sponsor {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  font-size: 0.88rem;
  flex-direction: row;
  gap: 6px;
}

.btn-bmc {
  background: #FFDD00;
  color: #000;
  font-weight: 700;
}

.btn-bmc:hover {
  background: #FFD400;
  color: #000;
  transform: translateY(-1px);
}

.btn-sponsor {
  background: #ea4aaa;
  color: #fff;
  font-weight: 700;
}

.btn-sponsor:hover {
  background: #d63d99;
  color: #fff;
  transform: translateY(-1px);
}

/* ============ Install ============ */
.install {
  padding: 80px 0;
  background: linear-gradient(180deg, transparent 0%, rgba(124, 58, 237, 0.04) 100%);
}

.install-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: start;
}

.install-steps {
  list-style: none;
  counter-reset: steps;
  padding: 0;
  margin: 24px 0 32px;
}

.install-steps li {
  position: relative;
  padding: 10px 0 10px 44px;
  color: var(--fg-muted);
  counter-increment: steps;
}

.install-steps li::before {
  content: counter(steps);
  position: absolute;
  left: 0;
  top: 8px;
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: 50%;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--fg);
}

.install-side {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.install-side h3 {
  margin: 0 0 12px;
  font-size: 1rem;
}

.install-side pre {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  margin: 0 0 12px;
  overflow-x: auto;
  font-size: 0.82rem;
  line-height: 1.55;
}

.install-side pre code {
  background: transparent;
  border: none;
  padding: 0;
}

.install-note {
  font-size: 0.82rem;
  color: var(--fg-subtle);
  margin: 0;
}

/* ============ Footer ============ */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
  margin-top: 40px;
  background: var(--bg);
}

.footer-row {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
  text-align: center;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
}

.footer-brand img {
  width: 24px;
  height: 24px;
  border-radius: 4px;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
}

.footer-nav a {
  color: var(--fg-muted);
  font-size: 0.88rem;
}

.footer-meta {
  color: var(--fg-subtle);
  font-size: 0.82rem;
  margin: 0;
}

.footer-meta a {
  color: var(--fg-muted);
}

/* ============ Responsive ============ */
@media (max-width: 880px) {
  .feature,
  .feature.reverse {
    grid-template-columns: 1fr;
    gap: 32px;
    margin: 56px 0;
  }
  .feature.reverse .feature-text,
  .feature.reverse .feature-figure {
    order: initial;
  }
  .about-grid,
  .install-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 640px) {
  .nav a:not(.nav-cta):not(.nav-ghost) {
    display: none;
  }
  .hero {
    padding: 48px 0 24px;
  }
  .value,
  .features,
  .providers,
  .about,
  .install {
    padding: 56px 0;
  }
  .btn {
    padding: 12px 18px;
    font-size: 0.9rem;
  }
}