:root {
  --bg: #070b12;
  --bg-alt: #0b111c;
  --surface: rgba(255, 255, 255, 0.045);
  --surface-strong: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.09);
  --text: #eef5f3;
  --text-dim: #93a4ac;
  --text-faint: #5d6b74;

  --blue: #1b7fe0;
  --teal: #14b8a6;
  --coral: #e08161;
  --mint: #9ff2da;

  --grad-brand: linear-gradient(135deg, var(--blue) 0%, var(--teal) 55%, var(--coral) 100%);

  --radius: 16px;
  --radius-sm: 10px;
  --container: 1180px;

  --shadow-lg: 0 30px 80px -20px rgba(0, 0, 0, 0.6);
  font-synthesis: none;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Open Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.brand-word, h1, h2, .mock-lyric, .grad-text {
  font-family: inherit;
}

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

a { color: inherit; text-decoration: none; }

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

/* ---------- background mesh ---------- */
.bg-mesh {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(700px 500px at 12% -8%, rgba(27, 127, 224, 0.22), transparent 60%),
    radial-gradient(800px 600px at 90% 10%, rgba(224, 129, 97, 0.14), transparent 55%),
    radial-gradient(900px 700px at 50% 105%, rgba(20, 184, 166, 0.16), transparent 60%),
    var(--bg);
}

/* ---------- nav ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  backdrop-filter: blur(14px) saturate(140%);
  background: rgba(7, 11, 18, 0.6);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s, background 0.25s;
}

.nav.scrolled {
  border-bottom-color: var(--border);
  background: rgba(7, 11, 18, 0.85);
}

.nav-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 68px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-right: auto;
}

.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 9px;
}

.brand-word {
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}
.brand-word em { font-style: normal; color: var(--mint); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 0.92rem;
  color: var(--text-dim);
}

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

.nav-github {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-cta { margin-left: 4px; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  width: 20px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, border-color 0.18s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: var(--grad-brand);
  color: #04110e;
  box-shadow: 0 12px 30px -10px rgba(27, 127, 224, 0.5);
}
.btn-primary:hover { box-shadow: 0 16px 36px -8px rgba(224, 129, 97, 0.45); }

.btn-ghost {
  background: var(--surface);
  border-color: var(--border);
  color: var(--text);
}
.btn-ghost:hover { background: var(--surface-strong); }

.btn-sm { padding: 9px 18px; font-size: 0.85rem; }

/* ---------- typography helpers ---------- */
.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mint);
  margin-bottom: 14px;
}

.grad-text {
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

h1 {
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  line-height: 1.08;
  margin: 0 0 22px;
  font-weight: 500;
}

h2 {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  line-height: 1.18;
  margin: 0 0 14px;
  font-weight: 500;
}

.section-head {
  max-width: 640px;
  margin: 0 auto 56px;
  text-align: center;
}
.section-head p { color: var(--text-dim); font-size: 1.02rem; }

/* ---------- hero ---------- */
.hero {
  padding: 168px 0 90px;
}

.hero-bg {
  position: relative;
  isolation: isolate;
}
.hero-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0.5;
  background:
    linear-gradient(100deg, rgba(7,11,18,0.95) 0%, rgba(7,11,18,0.8) 42%, rgba(7,11,18,0.55) 75%, rgba(7,11,18,0.75) 100%),
    linear-gradient(180deg, transparent 0%, transparent 65%, var(--bg) 100%),
    url("assets/splash-bg2.jpg") center right / cover no-repeat;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 56px;
  align-items: center;
}

.hero-lede {
  color: var(--text-dim);
  font-size: 1.08rem;
  max-width: 52ch;
  margin: 0 0 34px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-trust {
  list-style: none;
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
  padding: 0;
  margin: 34px 0 0;
  font-size: 0.85rem;
  color: var(--text-faint);
}
.hero-trust li {
  padding-left: 16px;
  position: relative;
}
.hero-trust li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
}

/* ---------- hero mock window ---------- */
.hero-visual { position: relative; }

.glow {
  position: absolute;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  filter: blur(90px);
  z-index: -1;
  opacity: 0.55;
}
.glow-blue { background: var(--blue); top: -40px; left: -40px; }
.glow-coral { background: var(--coral); bottom: -50px; right: -30px; }

.mock-window {
  background: linear-gradient(180deg, rgba(255,255,255,0.055), rgba(255,255,255,0.02));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(20px);
}

.mock-titlebar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  background: rgba(255,255,255,0.03);
}
.mock-titlebar .dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: rgba(255,255,255,0.15);
}
.mock-title {
  margin-left: 10px;
  font-size: 0.78rem;
  color: var(--text-faint);
}

.mock-body {
  display: flex;
  min-height: 260px;
}

.mock-sidebar {
  width: 120px;
  padding: 16px 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-right: 1px solid var(--border);
  background: rgba(0,0,0,0.15);
}

.mock-chip {
  font-size: 0.72rem;
  color: var(--text-faint);
  padding: 8px 10px;
  border-radius: 8px;
}
.mock-chip.active {
  background: var(--surface-strong);
  color: var(--mint);
}

.mock-stage {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  padding: 16px;
}

.mock-screen {
  position: relative;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  min-height: 110px;
}

.mock-preview {
  background: linear-gradient(160deg, rgba(27,127,224,0.35), rgba(11,17,28,0.9));
  border: 1px solid rgba(27,127,224,0.35);
}
.mock-live {
  background: linear-gradient(160deg, rgba(224,129,97,0.35), rgba(11,17,28,0.9));
  border: 1px solid rgba(224,129,97,0.4);
}

.mock-tag {
  position: absolute;
  top: 8px;
  left: 8px;
  font-size: 0.6rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 7px;
  border-radius: 5px;
  background: rgba(0,0,0,0.4);
  color: var(--text-dim);
}
.mock-tag-live {
  color: #ffd8c9;
  background: rgba(224,129,97,0.25);
}

.mock-lyric {
  font-size: 1rem;
  color: var(--text);
  padding: 0 10px;
}

.mock-statusbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  font-size: 0.72rem;
  color: var(--text-faint);
  border-top: 1px solid var(--border);
  background: rgba(0,0,0,0.15);
}

.mock-pulse {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 0 rgba(20,184,166,0.6);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(20,184,166,0.55); }
  70%  { box-shadow: 0 0 0 8px rgba(20,184,166,0); }
  100% { box-shadow: 0 0 0 0 rgba(20,184,166,0); }
}

/* ---------- strip ---------- */
.strip {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 22px 0;
}
.strip-inner {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  color: var(--text-faint);
  font-size: 0.85rem;
}
.strip-inner .sep { color: var(--border); }

/* ---------- sections ---------- */
.section { padding: 110px 0; }
.section-alt { background: linear-gradient(180deg, transparent, rgba(255,255,255,0.02), transparent); }

.section-features-bg {
  position: relative;
  isolation: isolate;
}
.section-features-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0.42;
  background:
    linear-gradient(180deg, var(--bg) 0%, rgba(7,11,18,0.7) 14%, rgba(7,11,18,0.6) 50%, rgba(7,11,18,0.72) 88%, var(--bg) 100%),
    url("assets/splash-bg3.jpg") center 30% / cover no-repeat;
}

/* ---------- features ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  background: rgba(9, 13, 20, 0.55);
  backdrop-filter: blur(16px) saturate(130%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 26px;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}
.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(159, 242, 218, 0.25);
  background: var(--surface-strong);
}

.feature-icon {
  width: 42px;
  height: 42px;
  border-radius: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--grad-brand);
  color: #04110e;
  margin-bottom: 18px;
}
.feature-icon svg { width: 22px; height: 22px; }

.feature-card h3 {
  font-size: 1.04rem;
  margin: 0 0 8px;
  font-weight: 600;
}
.feature-card p {
  color: var(--text-dim);
  font-size: 0.92rem;
  margin: 0;
}

/* ---------- modules ---------- */
.module-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  padding: 46px 0;
  border-bottom: 1px solid var(--border);
}
.module-row:last-child { border-bottom: none; }
.module-row-rev .module-copy { order: 2; }
.module-row-rev .module-visual { order: 1; }

.module-index {
  font-size: 0.85rem;
  color: var(--text-faint);
  letter-spacing: 0.08em;
}

.module-copy h3 {
  font-size: 1.5rem;
  margin: 8px 0 14px;
  font-weight: 500;
}
.module-copy p { color: var(--text-dim); margin: 0 0 18px; }

.module-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.module-list li {
  padding-left: 22px;
  position: relative;
  font-size: 0.92rem;
  color: var(--text);
}
.module-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--grad-brand);
}

.module-visual { display: flex; justify-content: center; }

.mini-card {
  width: 100%;
  max-width: 320px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.mini-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 9px;
  font-size: 0.88rem;
  color: var(--text-dim);
}
.mini-row:nth-child(odd) { background: rgba(255,255,255,0.03); }
.mini-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.mini-dot.mint { background: var(--mint); }
.mini-dot.blue { background: var(--blue); }
.mini-dot.coral { background: var(--coral); }

.mock-standalone {
  width: 100%;
  max-width: 320px;
  aspect-ratio: 16/10;
  min-height: 0;
}

.mini-doc {
  position: relative;
  width: 200px;
  height: 240px;
}
.mini-doc-page {
  position: absolute;
  inset: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
}
.mini-doc-page:nth-child(1) { transform: rotate(-6deg) translate(-14px, 6px); }
.mini-doc-page:nth-child(2) { transform: rotate(4deg) translate(10px, 2px); }
.mini-doc-page.active {
  transform: none;
  background: linear-gradient(160deg, rgba(27,127,224,0.18), rgba(11,17,28,0.9));
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px;
}
.mini-doc-page.active::before,
.mini-doc-page.active::after {
  content: "";
  height: 8px;
  border-radius: 4px;
  background: rgba(255,255,255,0.12);
}
.mini-doc-page.active::before { width: 70%; margin-top: 10px; }
.mini-doc-page.active::after { width: 45%; }

.mini-qr {
  color: var(--mint);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ---------- platforms ---------- */
.platform-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.platform-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 32px;
}
.platform-card h3 { margin: 0 0 6px; font-size: 1.2rem; font-weight: 600; }
.platform-status {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--mint);
  background: rgba(159, 242, 218, 0.1);
  border: 1px solid rgba(159, 242, 218, 0.25);
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 20px;
}
.spec-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.spec-table td { padding: 10px 0; border-top: 1px solid var(--border); }
.spec-table td:first-child { color: var(--text-faint); width: 90px; }
.platform-note {
  margin: 18px 0 0;
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* ---------- cta / philosophy ---------- */
.section-cta { padding: 60px 0 120px; }
.cta-box {
  background: linear-gradient(160deg, rgba(27,127,224,0.12), rgba(224,129,97,0.08));
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 64px 56px;
  text-align: center;
}
.cta-box h2 { max-width: 720px; margin-left: auto; margin-right: auto; }
.cta-box p {
  color: var(--text-dim);
  max-width: 560px;
  margin: 0 auto 44px;
}
.cta-box .hero-actions { justify-content: center; }

.pillar-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin: 0 auto 44px;
  max-width: 780px;
  text-align: left;
}
.pillar h4 { margin: 0 0 6px; font-size: 0.98rem; }
.pillar p { color: var(--text-dim); font-size: 0.86rem; margin: 0; }

/* ---------- community ---------- */
.community-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.community-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.community-card:hover {
  transform: translateY(-4px);
  border-color: rgba(159, 242, 218, 0.25);
}
.community-card h3 { margin: 0 0 8px; font-size: 1.02rem; }
.community-card p { margin: 0; color: var(--text-dim); font-size: 0.88rem; }

/* ---------- donate ---------- */
.section-donate { padding: 20px 0 110px; }

.donate-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  background: linear-gradient(135deg, rgba(224, 129, 97, 0.14), rgba(27, 127, 224, 0.06));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 44px;
}

.donate-copy { max-width: 620px; }
.donate-copy h3 {
  font-size: 1.3rem;
  font-weight: 600;
  margin: 0 0 10px;
}
.donate-copy p { margin: 0; color: var(--text-dim); font-size: 0.92rem; }

.donate-btn { flex-shrink: 0; }

@media (max-width: 720px) {
  .donate-panel { flex-direction: column; align-items: flex-start; padding: 32px 26px; }
  .donate-btn { width: 100%; }
}

/* ---------- footer ---------- */
.footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: space-between;
}
.footer-brand { display: flex; align-items: center; gap: 10px; }
.footer-links { display: flex; gap: 20px; flex-wrap: wrap; font-size: 0.85rem; color: var(--text-dim); }
.footer-links a:hover { color: var(--text); }
.footer-legal {
  width: 100%;
  margin: 0;
  font-size: 0.78rem;
  color: var(--text-faint);
}

/* ---------- reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .module-row, .module-row-rev { grid-template-columns: 1fr; gap: 30px; }
  .module-row-rev .module-copy, .module-row-rev .module-visual { order: initial; }
  .platform-grid { grid-template-columns: 1fr; }
  .pillar-row { grid-template-columns: 1fr; }
  .community-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .nav-links {
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: rgba(7, 11, 18, 0.97);
    border-bottom: 1px solid var(--border);
    padding: 8px 24px 20px;
    transform: translateY(-130%);
    transition: transform 0.25s ease;
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { width: 100%; padding: 14px 0; border-bottom: 1px solid var(--border); }
  .nav-github { border-bottom: none !important; }
  .nav-cta { display: none; }
  .nav-toggle { display: flex; }
  .feature-grid { grid-template-columns: 1fr; }
  .hero { padding: 128px 0 70px; }
  .cta-box { padding: 44px 26px; }
}