:root {
  --accent: #22d67a;
  --accent-dim: #1ab766;
  --dark-bg: #0a0b0d;
  --dark-bg-2: #121418;
  --dark-border: #1e2128;
  --dark-border-2: #2a2e37;
  --dark-fg: #e6e8eb;
  --dark-fg-dim: #8a8f98;
  --dark-fg-mute: #5a5f68;
  --light-bg: #f7f7f5;
  --light-bg-2: #ffffff;
  --light-border: #e7e5e0;
  --light-border-2: #d4d1ca;
  --light-fg: #0f1012;
  --light-fg-dim: #6a6d74;
  --light-fg-mute: #9a9da4;
  --split: 50%;

  --sans: 'Inter', -apple-system, Helvetica, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, Menlo, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { background: var(--dark-bg); color: var(--dark-fg); font-family: var(--sans); font-size: 15px; line-height: 1.5; -webkit-font-smoothing: antialiased; }
body { overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
img, svg { display: block; max-width: 100%; }

/* ============ GLOBAL SPLIT BACKDROP ============ */
.page {
  position: relative;
  min-height: 100vh;
  background:
    linear-gradient(to right, var(--dark-bg) 0 var(--split), var(--light-bg) var(--split) 100%);
}
.page::before {
  content: '';
  position: fixed;
  top: 0; bottom: 0;
  left: var(--split);
  width: 1px;
  background: linear-gradient(to bottom,
    transparent,
    rgba(34, 214, 122, 0.18) 8%,
    rgba(34, 214, 122, 0.35) 50%,
    rgba(34, 214, 122, 0.18) 92%,
    transparent);
  z-index: 1;
  pointer-events: none;
}

/* Side-aware text color */
.cli-side { color: var(--dark-fg); }
.cli-side-dim { color: var(--dark-fg-dim); }
.web-side { color: var(--light-fg); }
.web-side-dim { color: var(--light-fg-dim); }

/* ============ NAV ============ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  height: 60px;
  backdrop-filter: blur(16px) saturate(1.2);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
  background: linear-gradient(to right,
    rgba(10,11,13,0.72) 0 var(--split),
    rgba(247,247,245,0.72) var(--split) 100%);
  border-bottom: 1px solid transparent;
  border-image: linear-gradient(to right, var(--dark-border) 0 var(--split), var(--light-border) var(--split) 100%) 1;
}
.nav-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 32px;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 24px;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--mono); font-weight: 600; font-size: 14px;
  color: var(--dark-fg);
  letter-spacing: -0.01em;
}
.nav-logo-mark {
  width: 22px; height: 22px;
  background: var(--accent);
  border-radius: 5px;
  position: relative;
}
.nav-logo-mark::after {
  content: '';
  position: absolute; inset: 5px;
  border: 1.5px solid var(--dark-bg);
  border-radius: 2px;
  border-right-color: transparent;
  border-bottom-color: transparent;
  transform: rotate(45deg);
}
.nav-links { display: flex; align-items: center; gap: 4px; margin-left: 20px; }
.nav-link {
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 500;
  color: var(--dark-fg-dim);
  border-radius: 6px;
  transition: color .15s, background .15s;
}
.nav-link:hover { color: var(--dark-fg); background: rgba(255,255,255,0.04); }
.nav-link.web { color: var(--light-fg-dim); }
.nav-link.web:hover { color: var(--light-fg); background: rgba(0,0,0,0.04); }
.nav-spacer { flex: 1; }
.nav-cta {
  display: flex; align-items: center; gap: 8px;
}
.nav-signin {
  padding: 7px 14px;
  font-size: 13px; font-weight: 500;
  color: var(--light-fg);
  background: transparent;
  border-radius: 6px;
  transition: background .15s;
}
.nav-signin:hover { background: rgba(0,0,0,0.05); }
.nav-github {
  display: flex; align-items: center; gap: 6px;
  padding: 7px 12px;
  font-size: 13px; font-weight: 500;
  color: var(--dark-fg-dim);
  font-family: var(--mono);
  border-radius: 6px;
}
.nav-github:hover { color: var(--dark-fg); background: rgba(255,255,255,0.04); }
.lang-switcher { position: relative; }
.lang-trigger,
.lang-option {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--light-fg-dim);
  background: transparent;
  border: 0;
  cursor: pointer;
}
.lang-trigger {
  position: relative;
  padding: 7px 10px;
  border-radius: 6px;
}
.lang-trigger::after {
  content: '';
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 4px;
  height: 1px;
  background: var(--accent);
}
.lang-trigger:hover,
.lang-trigger.open { color: var(--light-fg); background: rgba(0,0,0,0.04); }
.lang-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 20;
  min-width: 72px;
  padding: 6px;
  border: 1px solid var(--light-border);
  background: var(--light-bg);
  box-shadow: 0 16px 36px rgba(0,0,0,0.14);
}
.lang-option {
  position: relative;
  display: block;
  width: 100%;
  padding: 7px 8px;
  text-align: left;
  border-radius: 5px;
}
.lang-option:hover { color: var(--light-fg); background: rgba(0,0,0,0.04); }
.lang-option.active { color: var(--accent); }
.lang-option.active::after {
  content: '';
  position: absolute;
  left: 8px;
  right: 8px;
  bottom: 4px;
  height: 1px;
  background: var(--accent);
}

/* ============ HERO ============ */
.hero {
  padding: 140px 32px 100px;
  position: relative;
  z-index: 2;
}
.hero-grid {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}
.hero-left { padding-right: 24px; }
.hero-right { padding-left: 24px; }

.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.02em;
  padding: 5px 10px;
  border: 1px solid var(--dark-border-2);
  border-radius: 999px;
  color: var(--dark-fg-dim);
  margin-bottom: 28px;
}
.hero-eyebrow .dot {
  width: 6px; height: 6px; background: var(--accent); border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(34,214,122,0.18);
}
.hero-eyebrow.web { border-color: var(--light-border-2); color: var(--light-fg-dim); }

.hero-headline {
  font-size: clamp(40px, 5.4vw, 68px);
  line-height: 1.02;
  letter-spacing: -0.035em;
  font-weight: 600;
  margin-bottom: 24px;
}
.hero-headline .accent { color: var(--accent); }
.hero-sub {
  font-size: 17px;
  line-height: 1.55;
  color: var(--dark-fg-dim);
  max-width: 520px;
  margin-bottom: 36px;
}
.hero-sub.web { color: var(--light-fg-dim); }

.hero-ctas { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 28px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 18px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  border: 1px solid transparent;
  transition: transform .15s, background .15s, border-color .15s;
  font-family: var(--mono);
  letter-spacing: -0.01em;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary-dark {
  background: var(--accent);
  color: #062013;
  font-weight: 600;
}
.btn-primary-dark:hover { background: #2ce788; }
.btn-ghost-dark {
  background: transparent;
  color: var(--dark-fg);
  border-color: var(--dark-border-2);
}
.btn-ghost-dark:hover { background: rgba(255,255,255,0.04); }
.btn-primary-light {
  background: var(--light-fg);
  color: var(--light-bg-2);
  font-weight: 600;
}
.btn-primary-light:hover { background: #222428; }
.btn-ghost-light {
  background: var(--light-bg-2);
  color: var(--light-fg);
  border-color: var(--light-border-2);
}
.btn-ghost-light:hover { background: #fafaf8; }

.hero-install {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--dark-fg-dim);
  padding: 10px 14px;
  border: 1px dashed var(--dark-border-2);
  border-radius: 8px;
  max-width: 360px;
}
.hero-install .prompt { color: var(--accent); user-select: none; }
.hero-install .cmd { color: var(--dark-fg); flex: 1; }
.hero-install .copy {
  font-family: var(--mono); font-size: 11px; color: var(--dark-fg-mute);
  padding: 2px 6px; border: 1px solid var(--dark-border-2); border-radius: 4px;
}

.hero-pill-web {
  display: flex; align-items: center; gap: 10px;
  font-size: 13px;
  color: var(--light-fg-dim);
  padding: 10px 14px;
  background: var(--light-bg-2);
  border: 1px solid var(--light-border);
  border-radius: 8px;
  max-width: 360px;
  font-family: var(--mono);
}
.hero-pill-web .badge {
  font-size: 10px; font-weight: 600; letter-spacing: 0.04em;
  padding: 2px 6px; background: var(--accent); color: #062013; border-radius: 3px;
}

/* ============ TERMINAL ============ */
.terminal {
  margin-top: 64px;
  background: var(--dark-bg-2);
  border: 1px solid var(--dark-border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 24px 60px -30px rgba(0,0,0,0.6), 0 0 0 1px rgba(34,214,122,0.06);
}
.terminal-chrome {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--dark-border);
  background: rgba(255,255,255,0.02);
}
.terminal-dot { width: 11px; height: 11px; border-radius: 50%; background: var(--dark-border-2); }
.terminal-title {
  font-family: var(--mono); font-size: 11px; color: var(--dark-fg-mute);
  margin-left: 10px;
}
.terminal-body {
  padding: 20px 22px 24px;
  font-family: var(--mono); font-size: 13.5px; line-height: 1.7;
  min-height: 360px;
}
.t-line { white-space: pre-wrap; }
.t-prompt { color: var(--accent); user-select: none; margin-right: 8px; }
.t-cmd { color: var(--dark-fg); }
.t-dim { color: var(--dark-fg-mute); }
.t-ok { color: var(--accent); }
.t-warn { color: #e6b645; }
.t-key { color: #8cb4ff; }
.t-cursor {
  display: inline-block;
  width: 8px; height: 16px;
  background: var(--accent);
  vertical-align: middle;
  animation: blink 1s steps(2) infinite;
  margin-left: 2px;
}
@keyframes blink { 50% { opacity: 0; } }

/* ============ DASHBOARD MOCK ============ */
.dash {
  margin-top: 64px;
  background: var(--light-bg-2);
  border: 1px solid var(--light-border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 24px 60px -30px rgba(0,0,0,0.15);
  min-height: 400px;
}
.dash-chrome {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--light-border);
  background: #fafaf8;
}
.dash-url {
  flex: 1;
  font-family: var(--mono); font-size: 11px;
  color: var(--light-fg-mute);
  background: var(--light-bg-2);
  border: 1px solid var(--light-border);
  border-radius: 5px;
  padding: 4px 10px;
  max-width: 260px;
}
.dash-body {
  padding: 20px;
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 18px;
  min-height: 360px;
}
.dash-sidebar {
  border-right: 1px solid var(--light-border);
  padding-right: 16px;
  display: flex; flex-direction: column; gap: 2px;
}
.dash-sidebar-label {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em;
  color: var(--light-fg-mute); text-transform: uppercase;
  padding: 6px 8px 4px;
}
.dash-nav-item {
  font-size: 12.5px;
  padding: 6px 8px;
  border-radius: 5px;
  color: var(--light-fg-dim);
  font-family: var(--mono);
  display: flex; align-items: center; gap: 8px;
  cursor: pointer;
}
.dash-nav-item:hover { background: rgba(0,0,0,0.04); }
.dash-nav-item.active { background: var(--light-fg); color: var(--light-bg-2); }
.dash-nav-item.active .dot { background: var(--accent); }
.dash-nav-item .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--light-fg-mute); }
.dash-main { display: flex; flex-direction: column; gap: 14px; }
.dash-header { display: flex; align-items: center; justify-content: space-between; }
.dash-title { font-size: 18px; font-weight: 600; letter-spacing: -0.01em; color: var(--light-fg); }
.dash-title .sub { font-family: var(--mono); font-size: 11px; color: var(--light-fg-mute); margin-left: 8px; font-weight: 400; }
.dash-run-btn {
  padding: 7px 14px; font-size: 12.5px; font-weight: 600;
  background: var(--accent); color: #062013; border-radius: 6px;
  font-family: var(--mono);
  display: inline-flex; align-items: center; gap: 6px;
}
.dash-status {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--mono); font-size: 11px; color: var(--light-fg-dim);
  padding: 4px 8px; background: rgba(34,214,122,0.1); border: 1px solid rgba(34,214,122,0.25);
  border-radius: 999px;
  width: fit-content;
}
.dash-status .pulse {
  width: 6px; height: 6px; background: var(--accent); border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(34,214,122,0.6);
  animation: pulse 1.6s ease-out infinite;
}
@keyframes pulse {
  70% { box-shadow: 0 0 0 8px rgba(34,214,122,0); }
  100% { box-shadow: 0 0 0 0 rgba(34,214,122,0); }
}

.dash-steps { display: flex; flex-direction: column; gap: 8px; }
.dash-step {
  display: grid; grid-template-columns: 18px 1fr auto; align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--light-border);
  border-radius: 7px;
  background: var(--light-bg-2);
  font-size: 13px;
}
.dash-step.done { background: #fbfbf9; }
.dash-step .check {
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--accent); color: #062013;
  display: flex; align-items: center; justify-content: center;
  font-size: 10px; font-weight: 800;
}
.dash-step.pending .check { background: var(--light-border); color: var(--light-fg-mute); }
.dash-step .label { font-weight: 500; color: var(--light-fg); }
.dash-step .meta { font-family: var(--mono); font-size: 11px; color: var(--light-fg-mute); }

/* ============ SECTION PRIMITIVES ============ */
section.sec { padding: 120px 32px; position: relative; z-index: 2; }
.sec-inner { max-width: 1400px; margin: 0 auto; }
.sec-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
}
.sec-eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}
.sec-title {
  font-size: clamp(32px, 3.6vw, 48px);
  line-height: 1.05;
  letter-spacing: -0.03em;
  font-weight: 600;
  margin-bottom: 16px;
}
.sec-lede {
  font-size: 17px;
  line-height: 1.55;
  max-width: 540px;
  color: var(--dark-fg-dim);
  margin-bottom: 48px;
}
.sec-lede.web { color: var(--light-fg-dim); }

/* ============ PROBLEM ============ */
.problem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px;
  max-width: 1400px; margin: 48px auto 0;
}
.problem-card {
  padding: 28px 24px;
  border-radius: 10px;
  display: flex; flex-direction: column;
  min-height: 240px;
  position: relative;
}
.problem-card.dark {
  background: var(--dark-bg-2);
  border: 1px solid var(--dark-border);
}
.problem-card.split {
  background: linear-gradient(to right,
    var(--dark-bg-2) 0 50%, var(--light-bg-2) 50% 100%);
  border: 1px solid var(--dark-border);
  padding: 0;
  overflow: hidden;
}
.problem-card.split .split-cols {
  display: grid; grid-template-columns: 1fr 1fr;
  min-height: 240px;
}
.problem-card.split .split-col {
  padding: 28px 24px;
  display: flex; flex-direction: column;
}
.problem-card.split .split-col.dark-col { color: var(--dark-fg); }
.problem-card.split .split-col.dark-col .problem-num { color: var(--dark-fg-mute); margin-bottom: 20px; }
.problem-card.split .split-col.dark-col .problem-h { color: var(--dark-fg); }
.problem-card.split .split-col.dark-col .problem-p { color: var(--dark-fg-dim); margin-bottom: auto; }
.problem-card.split .split-col.dark-col .problem-anchor { border-top: 1px dashed var(--dark-border-2); }
.problem-card.split .split-col.dark-col .problem-anchor .name { color: var(--dark-fg-dim); }
.problem-card.split .split-col.light-col { color: var(--light-fg); }
.problem-card.split .split-col.light-col .problem-p { color: var(--light-fg-dim); margin-bottom: auto; }
.problem-card.split .split-col.light-col .problem-anchor { border-top: 1px dashed var(--light-border-2); }
.problem-card.split .split-col.light-col .problem-anchor .name { color: var(--light-fg-dim); }
.problem-card.light {
  background: var(--light-bg-2);
  border: 1px solid var(--light-border);
}
.problem-num {
  font-family: var(--mono); font-size: 11px; color: var(--dark-fg-mute);
  margin-bottom: 20px; letter-spacing: 0.08em;
}
.problem-card.light .problem-num { color: var(--light-fg-mute); }
.problem-h {
  font-size: 22px; font-weight: 600; letter-spacing: -0.02em;
  margin-bottom: 10px;
}
.problem-p {
  font-size: 14px; line-height: 1.55;
  color: var(--dark-fg-dim);
  margin-bottom: auto;
}
.problem-card.light .problem-p { color: var(--light-fg-dim); }
.problem-anchor {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px dashed var(--dark-border-2);
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 12px;
  font-family: var(--mono);
  font-size: 12px;
}
.problem-card.light .problem-anchor { border-top-color: var(--light-border-2); }
.problem-anchor .name { color: var(--dark-fg-dim); }
.problem-card.light .problem-anchor .name { color: var(--light-fg-dim); }
.problem-anchor .price { color: #e66b5e; font-weight: 600; font-size: 15px; }
.problem-anchor .strike { text-decoration: line-through; color: var(--dark-fg-mute); font-size: 11px; }
.problem-card.light .problem-anchor .strike { color: var(--light-fg-mute); }

/* ============ ENGINE DIAGRAM ============ */
.engine {
  max-width: 1100px;
  margin: 48px auto 0;
  position: relative;
  padding: 40px 0;
}
.engine-core {
  margin: 0 auto;
  width: fit-content;
  padding: 20px 28px;
  background: linear-gradient(to right,
    var(--dark-bg-2) 0 50%, var(--light-bg-2) 50% 100%);
  border: 1px solid var(--accent);
  border-radius: 10px;
  box-shadow: 0 0 0 4px rgba(34,214,122,0.08), 0 20px 40px -20px rgba(34,214,122,0.3);
  position: relative;
  z-index: 3;
  text-align: center;
}
.engine-core .label {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em;
  color: var(--accent); text-transform: uppercase; margin-bottom: 4px;
}
.engine-core .name {
  font-family: var(--mono); font-size: 18px; font-weight: 600;
  color: var(--accent);
}
.engine-sockets {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-top: 60px;
  position: relative;
}
.engine-socket {
  padding: 24px;
  border-radius: 10px;
  min-height: 200px;
}
.engine-socket.cli {
  background: var(--dark-bg-2);
  border: 1px solid var(--dark-border);
}
.engine-socket.web {
  background: var(--light-bg-2);
  border: 1px solid var(--light-border);
}
.engine-socket .head {
  display: flex; align-items: baseline; justify-content: space-between;
  margin-bottom: 14px;
}
.engine-socket .h {
  font-size: 18px; font-weight: 600; letter-spacing: -0.01em;
}
.engine-socket .tag {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.06em;
  padding: 2px 8px; border-radius: 3px;
}
.engine-socket.cli .tag { background: rgba(34,214,122,0.15); color: var(--accent); }
.engine-socket.web .tag { background: var(--light-fg); color: var(--light-bg-2); }
.engine-socket .p {
  font-size: 13.5px; line-height: 1.55; margin-bottom: 16px;
}
.engine-socket.cli .p { color: var(--dark-fg-dim); }
.engine-socket.web .p { color: var(--light-fg-dim); }
.engine-attrs {
  display: flex; flex-direction: column; gap: 8px;
  font-family: var(--mono); font-size: 12px;
}
.engine-attrs .row { display: flex; justify-content: space-between; gap: 8px; }
.engine-attrs .k { color: var(--dark-fg-mute); }
.engine-socket.web .engine-attrs .k { color: var(--light-fg-mute); }

.engine-connectors {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}

/* ============ SPLIT HEADER (shared) ============ */
.split-heads {
  display: grid; grid-template-columns: 1fr 1fr;
  max-width: 1400px; margin: 0 auto 48px;
  align-items: end;
  gap: 0;
}
.split-head-side { padding: 0 36px; }
.split-head-side.dark-side { text-align: right; color: var(--dark-fg); }
.split-head-side.light-side { text-align: left; color: var(--light-fg); }
.split-h {
  font-size: clamp(32px, 4.2vw, 56px);
  letter-spacing: -0.03em;
  line-height: 1.05;
  font-weight: 600;
  margin-top: 6px;
}
.split-h .accent { color: var(--accent); }
.split-lede {
  margin-top: 14px;
  font-size: 15px;
  max-width: 440px;
  line-height: 1.55;
}
.split-head-side.dark-side .split-lede { color: var(--dark-fg-dim); margin-left: auto; }
.split-head-side.light-side .split-lede { color: var(--light-fg-dim); }
.split-head-side .legend {
  display: flex; gap: 14px;
  margin-top: 16px;
  font-family: var(--mono); font-size: 11px;
}
.split-head-side .legend .item { display: inline-flex; align-items: center; gap: 6px; }
.split-head-side .legend .tag { padding: 2px 6px; border-radius: 3px; font-weight: 600; }
.split-head-side .legend .tag.free { background: rgba(34,214,122,0.15); color: var(--accent); }
.split-head-side .legend .tag.pro { background: rgba(230,107,94,0.15); color: #e66b5e; }

.skills-grid {
  max-width: 1400px; margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid transparent;
  border-radius: 10px;
  overflow: hidden;
  background:
    linear-gradient(to right, var(--dark-border) 0 50%, var(--light-border) 50% 100%);
  gap: 1px;
}
.skill-card {
  padding: 20px;
  display: flex; flex-direction: column; gap: 10px;
  min-height: 140px;
  position: relative;
  transition: background .2s;
}
.skill-card.dark { background: var(--dark-bg); color: var(--dark-fg); }
.skill-card.light { background: var(--light-bg); color: var(--light-fg); }
.skill-card.dark:hover { background: var(--dark-bg-2); }
.skill-card.light:hover { background: var(--light-bg-2); }
.skill-card .top {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 8px;
}
.skill-card .name {
  font-family: var(--mono); font-size: 14px; font-weight: 600;
  letter-spacing: -0.01em;
}
.skill-card .tag {
  font-family: var(--mono); font-size: 9.5px; font-weight: 600;
  padding: 2px 6px; border-radius: 3px;
  letter-spacing: 0.06em;
}
.skill-card .tag.free { background: rgba(34,214,122,0.15); color: var(--accent); }
.skill-card .tag.pro { background: rgba(230,107,94,0.15); color: #e66b5e; }
.skill-card.light .tag.pro { background: rgba(230,107,94,0.12); }
.skill-card .desc {
  font-size: 12.5px; line-height: 1.45;
}
.skill-card.dark .desc { color: var(--dark-fg-dim); }
.skill-card.light .desc { color: var(--light-fg-dim); }
.skill-card .ex {
  font-family: var(--mono); font-size: 11px; margin-top: auto;
  padding-top: 8px;
  opacity: 0.7;
}
.skill-card.dark .ex { color: var(--dark-fg-mute); }
.skill-card.light .ex { color: var(--light-fg-mute); }
.skill-card .ex::before { content: '$ '; color: var(--accent); }
.skill-card.light .ex::before { color: var(--accent-dim); }

/* ============ INTEGRATIONS ============ */
.integ-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  max-width: 1400px;
  margin: 0 auto;
  gap: 0;
}
.integ-col { padding: 40px 36px; }
.integ-col.dark-col {
  text-align: right;
  color: var(--dark-fg-dim);
}
.integ-col.light-col {
  text-align: left;
  color: var(--light-fg-dim);
}
.integ-list {
  list-style: none;
  padding: 0;
  margin: 12px 0 0;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 2;
}
.integ-kicker { margin-top: 24px; }
.integ-note {
  font-size: 13px;
  line-height: 1.55;
  margin-top: 10px;
  max-width: 320px;
}
.integ-col.dark-col .integ-note { margin-left: auto; }

/* ============ PROOF / NUMBERS ============ */
.proof {
  max-width: 1400px; margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1px;
  background: linear-gradient(to right, var(--dark-border) 0 50%, var(--light-border) 50% 100%);
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid transparent;
}
.proof-item {
  padding: 40px 32px;
  min-height: 200px;
  display: flex; flex-direction: column; justify-content: space-between;
}
.proof-item.dark { background: var(--dark-bg); }
.proof-item.split {
  background: linear-gradient(to right,
    var(--dark-bg) 0 50%, var(--light-bg) 50% 100%);
  padding: 0;
}
.proof-item.split .split-cols {
  display: grid; grid-template-columns: 1fr 1fr;
  height: 100%; min-height: 200px;
}
.proof-item.split .split-col {
  padding: 40px 32px;
  display: flex; flex-direction: column; justify-content: space-between;
}
.proof-item.split .split-col.dark-col .proof-label { color: var(--dark-fg-mute); }
.proof-item.split .split-col.dark-col .proof-big { color: var(--dark-fg); text-align: right; }
.proof-item.split .split-col.dark-col .proof-cap { color: var(--dark-fg-dim); text-align: right; }
.proof-item.split .split-col.light-col .proof-label { color: var(--light-fg-mute); }
.proof-item.split .split-col.light-col .proof-big { color: var(--accent); text-align: left; }
.proof-item.split .split-col.light-col .proof-cap { color: var(--light-fg-dim); text-align: left; }
.proof-item.light { background: var(--light-bg); }
.proof-label {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em;
  text-transform: uppercase;
}
.proof-item.dark .proof-label { color: var(--dark-fg-mute); }
.proof-item.light .proof-label { color: var(--light-fg-mute); }
.proof-item.split .proof-label { color: var(--accent); }
.proof-big {
  font-family: var(--mono);
  font-size: clamp(56px, 7vw, 88px);
  letter-spacing: -0.04em;
  font-weight: 500;
  line-height: 1;
  margin: 24px 0;
}
.proof-big .unit { font-size: 0.4em; color: var(--accent); margin-left: 6px; letter-spacing: 0; }
.proof-item.dark .proof-big { color: var(--dark-fg); }
.proof-item.light .proof-big { color: var(--light-fg); }
.proof-cap {
  font-family: var(--mono); font-size: 12px;
}
.proof-item.dark .proof-cap { color: var(--dark-fg-dim); }
.proof-item.light .proof-cap { color: var(--light-fg-dim); }
.proof-sample {
  display: inline-block;
  margin-top: 16px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.02em;
  text-decoration: none;
}
.proof-sample:hover { text-decoration: underline wavy var(--accent); }

/* ============ PRICING ============ */
.pricing-grid {
  max-width: 1400px; margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: linear-gradient(to right, var(--dark-border) 0 50%, var(--light-border) 50% 100%);
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid transparent;
}
.price-card {
  padding: 32px 24px;
  min-height: 520px;
  display: flex; flex-direction: column;
  position: relative;
}
.price-card.dark { background: var(--dark-bg); color: var(--dark-fg); }
.price-card.light { background: var(--light-bg); color: var(--light-fg); }
.price-card.featured {
  background: var(--dark-bg-2);
  outline: 1px solid var(--accent);
  outline-offset: -1px;
}
.price-tier {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em;
  text-transform: uppercase; margin-bottom: 4px;
}
.price-card.dark .price-tier { color: var(--dark-fg-mute); }
.price-card.light .price-tier { color: var(--light-fg-mute); }
.price-card.featured .price-tier { color: var(--accent); }
.price-name {
  font-size: 20px; font-weight: 600; letter-spacing: -0.01em;
  margin-bottom: 20px;
}
.price-amount {
  font-family: var(--mono);
  font-size: 40px; font-weight: 500; letter-spacing: -0.03em;
  line-height: 1;
  display: flex; align-items: baseline; gap: 4px;
}
.price-amount .cur { font-size: 20px; opacity: 0.5; }
.price-amount .per { font-size: 13px; opacity: 0.5; font-weight: 400; letter-spacing: 0; }
.price-badge {
  display: inline-block;
  font-family: var(--mono); font-size: 10px; font-weight: 600;
  letter-spacing: 0.06em;
  padding: 3px 8px;
  background: var(--accent); color: #062013;
  border-radius: 3px;
  margin-top: 8px;
  width: fit-content;
}
.price-badge.muted { background: transparent; border: 1px solid var(--dark-border-2); color: var(--dark-fg-dim); }
.price-card.light .price-badge.muted { border-color: var(--light-border-2); color: var(--light-fg-dim); }
.price-features {
  list-style: none;
  margin: 28px 0;
  display: flex; flex-direction: column; gap: 10px;
  font-size: 13px;
  flex: 1;
}
.price-features li {
  display: flex; gap: 10px; align-items: flex-start;
  font-family: var(--mono);
}
.price-features li::before {
  content: '+';
  color: var(--accent);
  font-weight: 600;
  flex: 0 0 12px;
}
.price-features li.muted { opacity: 0.4; }
.price-features li.muted::before { content: '—'; color: inherit; }
.price-trust {
  border-top: 1px dashed;
  padding-top: 16px;
  margin-top: 12px;
  margin-bottom: 20px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  line-height: 1.8;
}
.price-card.dark .price-trust {
  border-top-color: var(--dark-border-2);
  color: var(--dark-fg-mute);
}
.price-card.light .price-trust {
  border-top-color: var(--light-border-2);
  color: var(--light-fg-mute);
}
.price-cta {
  padding: 11px 16px;
  border-radius: 7px;
  font-family: var(--mono); font-size: 13px; font-weight: 600;
  text-align: center;
  transition: transform .15s, background .15s;
}
.price-card.dark .price-cta {
  background: transparent; border: 1px solid var(--dark-border-2); color: var(--dark-fg);
}
.price-card.dark .price-cta:hover { background: rgba(255,255,255,0.04); }
.price-card.featured .price-cta {
  background: var(--accent); color: #062013; border: 1px solid var(--accent);
}
.price-card.featured .price-cta:hover { background: #2ce788; }
.price-card.light .price-cta {
  background: var(--light-fg); color: var(--light-bg-2); border: 1px solid var(--light-fg);
}
.price-card.light .price-cta:hover { background: #222428; }

.price-anchor {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px dashed;
  font-family: var(--mono); font-size: 11px;
}
.price-card.dark .price-anchor { border-color: var(--dark-border-2); color: var(--dark-fg-mute); }
.price-card.light .price-anchor { border-color: var(--light-border-2); color: var(--light-fg-mute); }

/* ============ FAQ ============ */
.faq-head {
  display: grid; grid-template-columns: 1fr 1fr;
  max-width: 1200px; margin: 0 auto 48px;
  align-items: end;
}
.faq-head-side { padding: 0 28px; }
.faq-head-side.dark-side { text-align: right; color: var(--dark-fg); }
.faq-head-side.light-side { text-align: left; color: var(--light-fg); }
.faq-h {
  font-size: clamp(32px, 4.2vw, 56px);
  letter-spacing: -0.03em;
  line-height: 1.05;
  font-weight: 600;
}
.faq-h .accent { color: var(--accent); }

.faq-grid {
  max-width: 1200px; margin: 0 auto;
  display: flex; flex-direction: column;
  border-top: 1px solid transparent;
  border-image: linear-gradient(to right, var(--dark-border) 0 50%, var(--light-border) 50% 100%) 1;
}
.faq-item {
  display: grid;
  grid-template-columns: 1fr 48px 1fr;
  align-items: start;
  border-bottom: 1px solid transparent;
  border-image: linear-gradient(to right, var(--dark-border) 0 50%, var(--light-border) 50% 100%) 1;
  width: 100%;
  font: inherit;
  color: inherit;
  background: none;
  border-top: 0;
  border-left: 0;
  border-right: 0;
  text-align: inherit;
  cursor: pointer;
  transition: background-color .2s;
}
.faq-item:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  background: rgba(34,214,122,0.04);
}
.faq-item:hover .faq-q { color: #fff; }
.faq-item:hover .faq-a-inner { color: var(--light-fg); }
.faq-q {
  padding: 24px 28px;
  text-align: right;
  font-size: 17px; font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--dark-fg);
}
.faq-toggle {
  display: flex; align-items: center; justify-content: center;
  padding-top: 26px;
  align-self: start;
}
.faq-icon {
  width: 20px; height: 20px;
  position: relative;
  flex-shrink: 0;
}
.faq-icon::before, .faq-icon::after {
  content: ''; position: absolute; top: 50%; left: 50%;
  width: 12px; height: 1.5px; background: var(--accent);
  transform: translate(-50%, -50%);
  transition: transform .2s;
}
.faq-icon::after { transform: translate(-50%, -50%) rotate(90deg); }
.faq-item.open .faq-icon::after { transform: translate(-50%, -50%) rotate(0deg); }
.faq-a {
  overflow: hidden;
  max-height: 0;
  padding: 0 28px;
  transition: max-height .25s ease, padding .25s ease;
  color: var(--light-fg-dim);
}
.faq-item.open .faq-a { max-height: 360px; padding: 24px 28px; }
.faq-a-inner {
  font-size: 14.5px; line-height: 1.6;
  color: var(--light-fg-dim);
}

/* ============ FINAL CTA ============ */
.final {
  padding: 140px 32px;
  text-align: center;
  position: relative;
  z-index: 2;
}
.final-heads {
  display: grid; grid-template-columns: 1fr 1fr;
  max-width: 1200px; margin: 0 auto 40px;
  align-items: end;
}
.final-h {
  font-size: clamp(32px, 4.2vw, 56px);
  letter-spacing: -0.03em;
  line-height: 1.05;
  font-weight: 600;
  padding: 0 28px;
}
.final-h.dark-side { color: var(--dark-fg); text-align: right; }
.final-h.light-side { color: var(--light-fg); text-align: left; }
.final-h .accent { color: var(--accent); }
.final-ctas {
  display: inline-grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--accent);
  border-radius: 10px;
  overflow: hidden;
}
.final-cta {
  padding: 18px 32px;
  font-family: var(--mono); font-size: 14px; font-weight: 600;
  letter-spacing: -0.01em;
  display: inline-flex; flex-direction: column; align-items: center; gap: 4px;
}
.final-cta .k { font-size: 11px; opacity: 0.7; letter-spacing: 0.08em; text-transform: uppercase; }
.final-cta.dark { background: var(--dark-bg-2); color: var(--dark-fg); }
.final-cta.light { background: var(--light-bg-2); color: var(--light-fg); }
.final-cta.dark:hover { background: var(--dark-border); }
.final-cta.light:hover { background: #fafaf8; }

/* ============ FOOTER ============ */
.footer {
  padding: 48px 32px 32px;
  position: relative; z-index: 2;
  border-top: 1px solid transparent;
  border-image: linear-gradient(to right, var(--dark-border) 0 50%, var(--light-border) 50% 100%) 1;
}
.footer-inner {
  max-width: 1400px; margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  font-family: var(--mono); font-size: 12px;
}
.footer-cli { color: var(--dark-fg-mute); }
.footer-web { color: var(--light-fg-mute); text-align: right; }
.footer-row { display: flex; gap: 20px; margin-top: 12px; }
.footer-web .footer-row { justify-content: flex-end; }
.footer a:hover { color: var(--accent); }

/* ============ TWEAKS PANEL ============ */
.tweaks {
  position: fixed;
  right: 20px; bottom: 20px;
  width: 280px;
  background: var(--dark-bg-2);
  border: 1px solid var(--dark-border-2);
  border-radius: 10px;
  padding: 16px;
  z-index: 100;
  font-size: 12px;
  color: var(--dark-fg);
  font-family: var(--mono);
  box-shadow: 0 20px 40px -20px rgba(0,0,0,0.6);
}
.tweaks h4 { font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); margin-bottom: 12px; }
.tweaks .field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 12px; }
.tweaks label { color: var(--dark-fg-dim); font-size: 11px; }
.tweaks input[type=range], .tweaks input[type=color] { width: 100%; }
.tweaks input[type=text], .tweaks select {
  background: var(--dark-bg); color: var(--dark-fg); border: 1px solid var(--dark-border-2);
  border-radius: 4px; padding: 6px 8px; font-family: var(--mono); font-size: 11px;
}
.tweaks .row { display: flex; gap: 8px; align-items: center; }
.tweaks button.toggle {
  padding: 4px 8px; font-size: 10px;
  background: var(--dark-bg); border: 1px solid var(--dark-border-2); border-radius: 4px;
  color: var(--dark-fg);
}
.tweaks button.toggle.on { background: var(--accent); color: #062013; border-color: var(--accent); }

/* ============ RESPONSIVE ============ */
@media (max-width: 1200px) {
  .hero-grid, .sec-grid { gap: 32px; }
  .skills-grid { grid-template-columns: repeat(3, 1fr); }
  .pricing-grid { grid-template-columns: repeat(2, 1fr); }
  .problem-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .page { background: var(--dark-bg); }
  .page::before { display: none; }
  .hero { padding: 100px 20px 60px; }
  .hero-grid, .sec-grid, .engine-sockets { grid-template-columns: 1fr; }
  .hero-right, .sec-grid > *:nth-child(2) { background: var(--light-bg); color: var(--light-fg); padding: 40px 20px; margin: 0 -20px; border-radius: 10px; }
  .skills-grid, .pricing-grid, .proof, .integ-grid { grid-template-columns: 1fr; }
  .integ-col.dark-col, .integ-col.light-col { text-align: left; }
  .integ-col.dark-col .integ-note { margin-left: 0; }
  .nav { background: rgba(10,11,13,0.9); }
  .nav-links { display: none; }
  section.sec { padding: 60px 20px; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-web { text-align: left; }
  .footer-web .footer-row { justify-content: flex-start; }
}
@media (max-width: 360px) {
  .hero-headline { font-size: 36px; }
  .sec-title { font-size: 28px; }
}