:root {
  --bg: #0c0d10;
  --bg-raise: #121318;
  --bg-panel: #16181f;
  --border: #23262f;
  --border-soft: #1c1f27;
  --text: #e8e9ed;
  --text-dim: #9aa0ac;
  --text-faint: #656b78;
  --accent: #f6a821;
  --accent-soft: rgba(246, 168, 33, 0.12);
  --green: #4ade80;
  --red: #f87171;
  --blue: #60a5fa;
  --purple: #c084fc;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.wrap {
  max-width: 68rem;
  margin: 0 auto;
  padding: 0 1.25rem;
}

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

code {
  font-family: var(--mono);
  font-size: 0.9em;
  background: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: 4px;
  padding: 0.1em 0.35em;
  color: var(--accent);
}

h1, h2, h3 { line-height: 1.15; letter-spacing: -0.02em; }

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(12, 13, 16, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-soft);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 3.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 650;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

.brand-mark {
  width: 1.15rem;
  height: 1.15rem;
  color: var(--accent);
  flex: none;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.nav-link {
  color: var(--text-dim);
  font-size: 0.9rem;
  transition: color 0.15s ease;
}

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

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 550;
  font-size: 0.95rem;
  border-radius: 8px;
  padding: 0.65rem 1.25rem;
  border: 1px solid transparent;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.btn svg { width: 1em; height: 1em; }

.btn-primary {
  background: var(--accent);
  color: #1a1204;
  border-color: var(--accent);
}

.btn-primary:hover { background: #ffbc45; border-color: #ffbc45; }

.btn-ghost {
  color: var(--text-dim);
  border-color: var(--border);
}

.btn-ghost:hover { color: var(--text); border-color: var(--text-faint); }

.btn-small {
  font-size: 0.85rem;
  padding: 0.35rem 0.85rem;
  background: var(--accent-soft);
  color: var(--accent);
  border-color: rgba(246, 168, 33, 0.25);
}

.btn-small:hover { background: rgba(246, 168, 33, 0.2); }

/* ---------- hero ---------- */

.hero {
  padding: 5.5rem 0 3.5rem;
  text-align: center;
}

.hero-kicker {
  font-family: var(--mono);
  font-size: 0.9rem;
  color: var(--accent);
  margin-bottom: 1.25rem;
}

.hero-kicker em { color: var(--text-dim); font-style: italic; }

.hero-kicker-sep { color: var(--text-faint); }

.hero h1 {
  font-size: clamp(2.2rem, 6vw, 3.75rem);
  font-weight: 700;
  margin-bottom: 1.25rem;
}

.hero-sub {
  max-width: 38rem;
  margin: 0 auto 2rem;
  color: var(--text-dim);
  font-size: 1.1rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
}

.hero-meta {
  margin-top: 1.25rem;
  font-size: 0.85rem;
  color: var(--text-faint);
}

/* ---------- app window mock ---------- */

.showcase { padding: 1rem 0 4.5rem; }

.app-window {
  background: var(--bg-raise);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.4),
    0 24px 60px -20px rgba(0, 0, 0, 0.7),
    0 0 120px -40px rgba(246, 168, 33, 0.15);
  font-family: var(--mono);
  font-size: 0.8rem;
}

.app-titlebar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 0.9rem;
  border-bottom: 1px solid var(--border-soft);
  background: var(--bg-panel);
}

.tl-dot { width: 0.7rem; height: 0.7rem; border-radius: 50%; flex: none; }
.tl-red { background: #453230; }
.tl-yellow { background: #46402c; }
.tl-green { background: #2d4233; }

.app-title {
  flex: 1;
  text-align: center;
  color: var(--text-faint);
  font-size: 0.75rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.env-pill {
  flex: none;
  font-size: 0.7rem;
  color: var(--text-dim);
  border: 1px solid var(--border);
  border-radius: 99px;
  padding: 0.1rem 0.6rem;
}

.env-pill strong { color: var(--accent); font-weight: 550; }

.app-body { display: flex; min-height: 21rem; }

.app-sidebar {
  flex: none;
  width: 13rem;
  border-right: 1px solid var(--border-soft);
  padding: 0.75rem 0.5rem;
  background: rgba(0, 0, 0, 0.15);
}

.sidebar-group {
  color: var(--text-faint);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.25rem 0.6rem 0.5rem;
}

.req {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.6rem;
  border-radius: 6px;
  color: var(--text-dim);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.req-active {
  background: var(--accent-soft);
  color: var(--text);
}

.method {
  flex: none;
  width: 2.6rem;
  text-align: center;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  border-radius: 4px;
  padding: 0.12rem 0;
}

.m-get { color: var(--green); background: rgba(74, 222, 128, 0.12); }
.m-post { color: var(--accent); background: var(--accent-soft); }
.m-del { color: var(--red); background: rgba(248, 113, 113, 0.12); }
.m-gql { color: var(--purple); background: rgba(192, 132, 252, 0.12); }
.m-grpc { color: var(--blue); background: rgba(96, 165, 250, 0.12); }

.app-main {
  flex: 1;
  min-width: 0;
  padding: 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.url-row {
  display: flex;
  align-items: stretch;
  gap: 0.5rem;
}

.method-select {
  flex: none;
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.35rem 0.7rem;
  font-weight: 700;
  font-size: 0.72rem;
}

.url-bar {
  flex: 1;
  min-width: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.35rem 0.7rem;
  color: var(--text-dim);
  background: rgba(0, 0, 0, 0.2);
  overflow: hidden;
  white-space: nowrap;
}

.var-chip {
  flex: none;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 4px;
  padding: 0.05rem 0.35rem;
  font-size: 0.72rem;
}

.send-btn {
  flex: none;
  display: inline-flex;
  align-items: center;
  background: var(--accent);
  color: #1a1204;
  font-weight: 700;
  font-size: 0.75rem;
  border-radius: 6px;
  padding: 0.35rem 0.9rem;
}

.resp-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border-bottom: 1px solid var(--border-soft);
  padding-bottom: 0.6rem;
  flex-wrap: wrap;
}

.status-chip {
  color: var(--green);
  background: rgba(74, 222, 128, 0.12);
  border-radius: 4px;
  padding: 0.1rem 0.5rem;
  font-weight: 700;
  font-size: 0.72rem;
}

.resp-stat { color: var(--text-faint); font-size: 0.72rem; }

.resp-tab {
  margin-left: auto;
  color: var(--text);
  font-size: 0.72rem;
  border-bottom: 2px solid var(--accent);
  padding-bottom: 0.1rem;
}

.resp-tab-dim {
  margin-left: 0;
  color: var(--text-faint);
  border-bottom-color: transparent;
}

.resp-body {
  flex: 1;
  margin: 0;
  overflow-x: auto;
  color: var(--text-dim);
  line-height: 1.55;
  font-size: 0.76rem;
}

.j-key { color: var(--blue); }
.j-str { color: var(--green); }
.j-num { color: var(--accent); }
.j-bool { color: var(--purple); }

/* ---------- features ---------- */

.features { padding: 4rem 0; border-top: 1px solid var(--border-soft); }

.features h2, .collab h2 {
  font-size: clamp(1.5rem, 3.5vw, 2.1rem);
  margin-bottom: 2.25rem;
  text-align: center;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
  gap: 1rem;
}

.feature {
  background: var(--bg-raise);
  border: 1px solid var(--border-soft);
  border-radius: 10px;
  padding: 1.4rem 1.5rem;
  transition: border-color 0.15s ease;
}

.feature:hover { border-color: var(--border); }

.feature h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.feature p {
  color: var(--text-dim);
  font-size: 0.9rem;
}

/* ---------- collab ---------- */

.collab {
  padding: 4rem 0;
  border-top: 1px solid var(--border-soft);
}

.collab-sub {
  max-width: 42rem;
  margin: -1.25rem auto 2.5rem;
  text-align: center;
  color: var(--text-dim);
}

.steps {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.step {
  position: relative;
  background: var(--bg-raise);
  border: 1px solid var(--border-soft);
  border-radius: 10px;
  padding: 1.4rem 1.5rem;
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.7rem;
  height: 1.7rem;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--mono);
  font-weight: 700;
  font-size: 0.85rem;
  margin-bottom: 0.75rem;
}

.step h3 { font-size: 1rem; font-weight: 600; margin-bottom: 0.4rem; }

.step p { color: var(--text-dim); font-size: 0.9rem; }

.diff-figure {
  max-width: 36rem;
  margin: 0 auto;
  background: var(--bg-raise);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}

.diff-figure figcaption {
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--border-soft);
  background: var(--bg-panel);
  font-size: 0.8rem;
  color: var(--text-faint);
}

.diff-figure figcaption code {
  background: none;
  border: none;
  padding: 0;
  color: var(--text-dim);
}

.diff {
  margin: 0;
  padding: 1rem;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.8rem;
  line-height: 1.6;
}

.diff code { display: block; background: none; border: none; padding: 0; color: inherit; }

.d-ctx { display: block; color: var(--text-faint); }
.d-del { display: block; color: var(--red); background: rgba(248, 113, 113, 0.08); }
.d-add { display: block; color: var(--green); background: rgba(74, 222, 128, 0.08); }

/* ---------- cta ---------- */

.cta {
  padding: 4.5rem 0;
  border-top: 1px solid var(--border-soft);
  text-align: center;
}

.cta h2 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  color: var(--accent);
  margin-bottom: 0.6rem;
}

.cta p { color: var(--text-dim); margin-bottom: 1.75rem; }

/* ---------- footer ---------- */

.site-footer {
  border-top: 1px solid var(--border-soft);
  padding: 1.75rem 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: 0.85rem;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--text-dim);
  font-weight: 550;
}

.footer-brand .brand-mark { width: 1rem; height: 1rem; color: var(--text-faint); }

.footer-note { color: var(--text-faint); }

/* ---------- responsive ---------- */

@media (max-width: 760px) {
  .hero { padding: 3.5rem 0 2.5rem; }
  .app-sidebar { display: none; }
  .app-body { min-height: 0; }
}

@media (max-width: 480px) {
  .hero-actions .btn { width: 100%; justify-content: center; }
  .app-title { display: none; }
  .env-pill { margin-left: auto; }
  .send-btn { display: none; }
  .footer-inner { flex-direction: column; text-align: center; }
}