@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

:root {
  --bg: #18181c;
  --bg-raised: #202024;
  --bg-card: #202024;
  --bg-input: #26262c;
  --line: #313138;
  --line-soft: #2a2a30;

  --green: #1bd96a;
  --green-bright: #29e87c;
  --green-dim: rgba(27, 217, 106, 0.14);
  --green-ink: #04160c;

  --cyan: #4da6ff;
  --amber: #ffb020;
  --red: #ff5c5c;

  --ink: #f3f3f5;
  --ink-dim: #9a9aa3;
  --ink-faint: #6c6c76;

  --font: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  --radius: 12px;
  --radius-sm: 6px;
  --radius-lg: 20px;

  --spring: cubic-bezier(.34, 1.56, .64, 1);
  --ease: cubic-bezier(.2, .8, .2, 1);

  --max: 1160px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
[hidden] { display: none !important; }

body {
  margin: 0; background: var(--bg); color: var(--ink); font-family: var(--font);
  font-size: 15px; line-height: 1.6; min-height: 100vh;
}
h1, h2, h3, h4 { font-family: var(--font); font-weight: 800; letter-spacing: -0.02em; margin: 0; color: var(--ink); }
p { margin: 0; }
a { color: inherit; }
code { font-family: var(--font-mono); background: var(--bg-input); color: var(--cyan); padding: 2px 7px; border-radius: 4px; border: 1px solid var(--line); font-size: 0.88em; }
::selection { background: var(--green-dim); color: var(--green); }
svg[data-lucide], i[data-lucide] { width: 16px; height: 16px; vertical-align: -3px; display: inline-block; }
.icon-gh { vertical-align: -3px; margin-right: 8px; }

img.no-shadow { box-shadow: none; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.section { padding: 88px 0; }
.section-tight { padding: 56px 0; }
.section-head { max-width: 640px; margin: 0 0 48px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px; font-family: var(--font-mono); font-size: 12px;
  font-weight: 600; color: var(--green); text-transform: uppercase; letter-spacing: 0.09em; margin-bottom: 14px;
}
.eyebrow::before { content: ''; width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 3px var(--green-dim); }
.section-head h2 { font-size: 34px; margin-bottom: 14px; }
.section-head p { color: var(--ink-dim); font-size: 15.5px; line-height: 1.65; }

/* ---------- Buttons ---------- */
.btn-primary, .btn-secondary, .btn-ghost {
  font-family: var(--font); font-weight: 700; font-size: 14px; border-radius: 999px; cursor: pointer;
  border: 1px solid transparent; padding: 13px 24px; display: inline-flex; align-items: center; gap: 8px;
  text-decoration: none; transition: transform .35s var(--spring), background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}
.btn-primary { background: var(--green); color: var(--green-ink); }
.btn-primary:hover { background: var(--green-bright); transform: translateY(-3px) scale(1.045); }
.btn-primary:active { transform: translateY(-1px) scale(0.96); transition-duration: .12s; }
.btn-secondary { background: var(--bg-input); color: var(--ink); border-color: var(--line); }
.btn-secondary:hover { border-color: var(--cyan); color: var(--cyan); transform: translateY(-3px) scale(1.03); }
.btn-secondary:active { transform: translateY(-1px) scale(0.96); transition-duration: .12s; }
.btn-ghost { background: none; color: var(--ink-dim); border-color: var(--line); }
.btn-ghost:hover { color: var(--ink); border-color: var(--ink-faint); transform: translateY(-2px); }
.btn-small { padding: 9px 16px; font-size: 12.5px; }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(24, 24, 28, 0.82); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; padding: 16px 0; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand-mark {
  color: var(--green-ink); background: var(--green); font-family: var(--font-mono); font-weight: 800; font-size: 16px;
  width: 32px; height: 32px; border-radius: 9px; display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.brand-mark-img { width: 32px; height: 32px; border-radius: 9px; object-fit: cover; flex-shrink: 0; display: block; }
.brand-text { font-weight: 800; font-size: 16.5px; letter-spacing: -0.01em; color: var(--ink); }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-link {
  color: var(--ink-dim); text-decoration: none; font-weight: 600; font-size: 13.5px; padding: 9px 14px;
  border-radius: 999px; transition: color .2s var(--ease), background .2s var(--ease), transform .25s var(--spring);
  display: inline-block;
}
.nav-link:hover { color: var(--ink); background: var(--bg-input); transform: translateY(-2px); }
.nav-link.active { color: var(--green); }
.nav-cta { display: flex; align-items: center; gap: 10px; }
.nav-toggle { display: none; background: none; border: 1px solid var(--line); border-radius: 8px; color: var(--ink); padding: 8px 10px; cursor: pointer; }

@media (max-width: 860px) {
  .nav-links { position: fixed; top: 65px; left: 0; right: 0; background: var(--bg-raised); border-bottom: 1px solid var(--line);
    flex-direction: column; align-items: stretch; padding: 10px; gap: 2px; transform: translateY(-8px); opacity: 0; pointer-events: none;
    transition: transform .25s var(--spring), opacity .2s var(--ease); }
  .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-link { padding: 12px 14px; }
  .nav-toggle { display: inline-flex; }
  .nav-cta .btn-secondary span.long { display: none; }
}

/* ---------- Hero / terminal signature ---------- */
.hero { padding: 76px 0 64px; position: relative; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
@media (max-width: 940px) { .hero-grid { grid-template-columns: 1fr; } }
.hero h1 { font-size: 50px; line-height: 1.06; margin-bottom: 20px; }
@media (max-width: 560px) { .hero h1 { font-size: 36px; } }
.hero h1 .accent { color: var(--green); }
.hero-sub { color: var(--ink-dim); font-size: 16.5px; max-width: 480px; margin-bottom: 32px; line-height: 1.65; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 28px; }
.hero-meta { display: flex; gap: 22px; flex-wrap: wrap; font-size: 12.5px; color: var(--ink-faint); font-family: var(--font-mono); }
.hero-meta span { display: flex; align-items: center; gap: 6px; }
.hero-meta i, .hero-meta svg { color: var(--green); }

.terminal {
  background: #131316; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  box-shadow: 0 30px 70px rgba(0,0,0,0.45);
}
.terminal-bar { display: flex; align-items: center; gap: 7px; padding: 12px 16px; background: var(--bg-raised); border-bottom: 1px solid var(--line); }
.terminal-dot { width: 10px; height: 10px; border-radius: 50%; }
.terminal-dot.r { background: #ff5f57; } .terminal-dot.y { background: #febc2e; } .terminal-dot.g { background: #28c840; }
.terminal-title { margin-left: 8px; font-family: var(--font-mono); font-size: 11.5px; color: var(--ink-faint); }
.terminal-body { padding: 20px 20px 26px; font-family: var(--font-mono); font-size: 13px; min-height: 260px; }
.terminal-line { white-space: pre-wrap; line-height: 1.75; opacity: 0; }
.terminal-line.shown { opacity: 1; }
.terminal-line .prompt { color: var(--green); }
.terminal-line .ok { color: var(--green-bright); }
.terminal-line .dim { color: var(--ink-faint); }
.terminal-cursor { display: inline-block; width: 7px; height: 14px; background: var(--green); vertical-align: -2px; animation: blink 1s step-end infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* ---------- App / feature cards ---------- */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 900px) { .card-grid { grid-template-columns: 1fr; } }
.app-card {
  background: var(--bg-card); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 28px;
  display: flex; flex-direction: column; gap: 14px; transition: transform .35s var(--spring), border-color .2s var(--ease);
}
.app-card:hover { transform: translateY(-6px); border-color: var(--green); }
.app-card:hover .app-card-icon { transform: scale(1.1) rotate(-4deg); }
.app-card-icon {
  width: 46px; height: 46px; border-radius: 12px; background: var(--green-dim); color: var(--green);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
  transition: transform .35s var(--spring);
}
.app-card-icon svg, .app-card-icon i { width: 22px; height: 22px; margin: 0; }
.app-card h3 { font-size: 18px; }
.app-card .port { font-family: var(--font-mono); font-size: 11.5px; color: var(--ink-faint); }
.app-card p { color: var(--ink-dim); font-size: 13.8px; line-height: 1.6; flex: 1; }
.app-card-link { display: inline-flex; align-items: center; gap: 6px; color: var(--green); font-weight: 700; font-size: 13.5px; text-decoration: none; }
.app-card-link:hover { color: var(--green-bright); }

/* ---------- Flow diagram ---------- */
.flow { display: flex; align-items: stretch; gap: 0; flex-wrap: wrap; }
.flow-step {
  flex: 1; min-width: 190px; background: var(--bg-card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px; display: flex; flex-direction: column; gap: 8px; position: relative;
}
.flow-step .num { font-family: var(--font-mono); color: var(--green); font-size: 12px; font-weight: 700; }
.flow-step h4 { font-size: 14.5px; }
.flow-step p { color: var(--ink-dim); font-size: 12.5px; line-height: 1.5; }
.flow-arrow { display: flex; align-items: center; justify-content: center; color: var(--ink-faint); padding: 0 6px; flex-shrink: 0; }
@media (max-width: 780px) { .flow { flex-direction: column; } .flow-arrow { transform: rotate(90deg); padding: 4px 0; } }

/* ---------- Screenshot frame (placeholder for user's own images) ---------- */
.screenshot-frame {
  border: 1.5px dashed var(--line); border-radius: var(--radius); background: var(--bg-raised);
  aspect-ratio: 16/10; display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden;
  transition: border-color .25s var(--ease), transform .35s var(--spring);
}
.screenshot-frame:hover { border-color: var(--cyan); transform: translateY(-4px); }
.screenshot-frame img { width: 100%; height: 100%; object-fit: cover; display: block; }
.screenshot-frame .placeholder { display: flex; flex-direction: column; align-items: center; gap: 10px; color: var(--ink-faint); text-align: center; padding: 24px; }
.screenshot-frame .placeholder i, .screenshot-frame .placeholder svg { width: 30px; height: 30px; color: var(--ink-faint); }
.screenshot-frame .placeholder strong { color: var(--ink-dim); font-size: 13px; font-weight: 700; }
.screenshot-frame .placeholder span { font-size: 11.5px; font-family: var(--font-mono); }
.screenshot-frame img.has-real { display: block; }
.screenshot-frame:has(img.has-real) .placeholder { display: none; }

/* ---------- Download page: app showcase ---------- */
.showcase { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; padding: 56px 0; border-bottom: 1px solid var(--line-soft); scroll-margin-top: 90px; }
.showcase:last-child { border-bottom: none; }
.showcase.first { padding-top: 8px; }
.showcase.reverse .showcase-text { order: 2; }
.showcase.reverse .showcase-media { order: 1; }
@media (max-width: 860px) { .showcase, .showcase.reverse .showcase-text, .showcase.reverse .showcase-media { grid-template-columns: 1fr; order: initial; } }
.showcase-tag { display: inline-flex; align-items: center; gap: 7px; font-family: var(--font-mono); font-size: 11.5px; color: var(--ink-faint); border: 1px solid var(--line); border-radius: 999px; padding: 5px 12px; margin-bottom: 16px; }
.showcase-text h2 { font-size: 26px; margin-bottom: 12px; }
.showcase-text p { color: var(--ink-dim); font-size: 14.5px; line-height: 1.65; margin-bottom: 18px; }
.feature-list { list-style: none; margin: 0 0 22px; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.feature-list li { display: flex; align-items: flex-start; gap: 10px; font-size: 13.8px; color: var(--ink); }
.feature-list li i, .feature-list li svg { color: var(--green); flex-shrink: 0; margin-top: 2px; }
.install-snippet { background: var(--bg-input); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 14px 46px 14px 16px; font-family: var(--font-mono); font-size: 12.5px; color: var(--ink); margin-bottom: 18px; overflow-x: auto; white-space: pre; }
.install-snippet .cm { color: var(--ink-faint); }
.showcase-actions { display: flex; gap: 10px; flex-wrap: wrap; }

.code-box { position: relative; }
.code-box .install-snippet { margin-bottom: 14px; }
.copy-btn {
  position: absolute; top: 10px; right: 10px; width: 30px; height: 30px; border-radius: 8px;
  background: var(--bg-raised); border: 1px solid var(--line); color: var(--ink-dim); cursor: pointer;
  display: flex; align-items: center; justify-content: center; padding: 0;
  transition: transform .3s var(--spring), border-color .2s var(--ease), color .2s var(--ease), background .2s var(--ease);
}
.copy-btn svg, .copy-btn i { margin: 0; width: 14px; height: 14px; }
.copy-btn .icon-copied { color: var(--green); }
.copy-btn:hover { border-color: var(--cyan); color: var(--cyan); transform: translateY(-2px) scale(1.06); }
.copy-btn:active { transform: translateY(0) scale(0.92); }
.copy-btn.copied { border-color: var(--green); color: var(--green); transform: scale(1.08); }
.copy-btn.copied:hover { transform: scale(1.08); }

.port-warning {
  display: flex; gap: 12px; background: rgba(255,92,92,0.08); border: 1px solid rgba(255,92,92,0.35);
  border-radius: var(--radius-sm); padding: 14px 18px; font-size: 13px; color: var(--ink-dim); margin-bottom: 20px;
}
.port-warning i, .port-warning svg { color: var(--red); flex-shrink: 0; margin-top: 2px; }
.port-warning strong { color: var(--ink); }
.port-badge { display: inline-flex; align-items: center; gap: 5px; font-size: 11px; font-weight: 700; padding: 3px 10px; border-radius: 999px; text-transform: uppercase; letter-spacing: 0.03em; }
.port-badge.danger { background: rgba(255,92,92,0.12); color: var(--red); }
.port-badge.ok { background: var(--green-dim); color: var(--green); }

/* ---------- Tutorial: step timeline ---------- */
.timeline { position: relative; padding-left: 46px; }
.timeline::before { content: ''; position: absolute; left: 17px; top: 6px; bottom: 6px; width: 2px; background: var(--line); }
.timeline-step { position: relative; padding-bottom: 40px; scroll-margin-top: 90px; }
.timeline-step:last-child { padding-bottom: 0; }
.timeline-num {
  position: absolute; left: -46px; top: 0; width: 36px; height: 36px; border-radius: 50%; background: var(--bg-card);
  border: 2px solid var(--green); color: var(--green); display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-weight: 700; font-size: 14px;
}
.timeline-step h3 { font-size: 17px; margin-bottom: 8px; }
.timeline-step p { color: var(--ink-dim); font-size: 14px; line-height: 1.65; margin-bottom: 10px; }
.timeline-step .install-snippet { margin-bottom: 10px; }
.timeline-note { display: flex; gap: 9px; background: rgba(77,166,255,0.08); border: 1px solid rgba(77,166,255,0.3); border-radius: var(--radius-sm); padding: 11px 14px; font-size: 12.8px; color: var(--ink-dim); margin-top: 10px; }
.timeline-note i, .timeline-note svg { color: var(--cyan); flex-shrink: 0; margin-top: 1px; }
.timeline-note.warn { background: rgba(255,176,32,0.08); border-color: rgba(255,176,32,0.3); }
.timeline-note.warn i, .timeline-note.warn svg { color: var(--amber); }

/* ---------- Prerequisites ---------- */
.prereq-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
@media (max-width: 760px) { .prereq-grid { grid-template-columns: 1fr; } }
.prereq-card { background: var(--bg-card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.prereq-card-head { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.prereq-card-head i, .prereq-card-head svg { width: 20px; height: 20px; color: var(--green); }
.prereq-card h3 { font-size: 15.5px; }
.prereq-card ul { margin: 0; padding-left: 20px; color: var(--ink-dim); font-size: 13.5px; line-height: 1.75; }
.prereq-card p { color: var(--ink-dim); font-size: 13.5px; line-height: 1.7; }

.port-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.port-table th, .port-table td { text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--line-soft); }
.port-table th { color: var(--ink-dim); font-size: 11px; text-transform: uppercase; letter-spacing: 0.05em; font-weight: 700; }
.port-table code { font-size: 12px; }
.port-table tr:last-child td { border-bottom: none; }

/* ---------- FAQ accordion ---------- */
.faq-item { border: 1px solid var(--line); border-radius: var(--radius); margin-bottom: 12px; background: var(--bg-card); overflow: hidden; transition: border-color .25s var(--ease); }
.faq-item:hover { border-color: var(--ink-faint); }
.faq-item summary {
  list-style: none; cursor: pointer; padding: 18px 22px; display: flex; align-items: center; justify-content: space-between;
  font-weight: 700; font-size: 14.5px; color: var(--ink); gap: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary .chev { color: var(--ink-faint); transition: transform .4s var(--spring); flex-shrink: 0; }
.faq-item.is-open summary .chev { transform: rotate(180deg); color: var(--green); }
.faq-item .faq-content { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .4s var(--spring); }
.faq-item .faq-content.expanded { grid-template-rows: 1fr; }
.faq-item .faq-content > .faq-body-inner { overflow: hidden; min-height: 0; }
.faq-item .faq-body { padding: 0 22px 20px; color: var(--ink-dim); font-size: 13.8px; line-height: 1.7; }
.faq-item .faq-body a { color: var(--cyan); }

/* ---------- CTA banner ---------- */
.cta-banner {
  background: linear-gradient(135deg, rgba(27,217,106,0.1), var(--bg-card)); border: 1px solid rgba(27,217,106,0.3);
  border-radius: var(--radius-lg); padding: 48px; display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap;
}
.cta-banner h2 { font-size: 26px; margin-bottom: 8px; }
.cta-banner p { color: var(--ink-dim); font-size: 14px; }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--line); padding: 44px 0 32px; margin-top: 40px; }
.footer-grid { display: flex; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.footer-col h4 { font-size: 12px; text-transform: uppercase; letter-spacing: 0.07em; color: var(--ink-faint); margin-bottom: 14px; }
.footer-col a { display: block; color: var(--ink-dim); text-decoration: none; font-size: 13.5px; margin-bottom: 10px; transition: color .2s var(--ease); }
.footer-col a:hover { color: var(--green); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; margin-top: 36px; padding-top: 24px; border-top: 1px solid var(--line-soft); flex-wrap: wrap; gap: 10px; }
.footer-bottom p { color: var(--ink-faint); font-size: 12px; }

/* ---------- Reveal-on-scroll ---------- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s var(--ease), transform .6s var(--spring); }
.reveal.in { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .terminal-line { opacity: 1; }
  * { animation-duration: 0.01ms !important; }
}

/* Focus visibility */
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 2px solid var(--green); outline-offset: 2px;
}