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

:root {
  --bg: #151515;
  --bg2: #1c1c1c;
  --fg: #e8e8e8;
  --fg2: #999;
  --fg3: #555;
  --red: #e05252;
  --red-dim: #e0525218;
  --red-border: #e0525244;
  --green: #5cb85c;
  --yellow: #c9a227;
  --border: #2a2a2a;
  --mono: 'SF Mono', 'Consolas', 'Menlo', monospace;
  --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;

  --cols: 12;
  --gutter: 24px;
  --margin: 80px;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--red); color: #fff; }
a { color: var(--red); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---- grid ---- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--margin);
}

.grid {
  display: grid;
  grid-template-columns: repeat(var(--cols), 1fr);
  gap: var(--gutter);
}

.col-1 { grid-column: span 1; }
.col-2 { grid-column: span 2; }
.col-3 { grid-column: span 3; }
.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }
.col-9 { grid-column: span 9; }
.col-10 { grid-column: span 10; }
.col-11 { grid-column: span 11; }
.col-12 { grid-column: span 12; }

.col-start-2 { grid-column-start: 2; }
.col-start-3 { grid-column-start: 3; }
.col-start-4 { grid-column-start: 4; }
.col-start-5 { grid-column-start: 5; }

/* ---- nav ---- */
.nav {
  border-bottom: 1px solid var(--border);
}
.nav .container {
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--red);
  text-decoration: none;
}
.nav-logo:hover { text-decoration: none; }
.nav-r { display: flex; gap: 2rem; align-items: center; font-size: .9rem; }
.nav-r a { color: var(--fg2); text-decoration: none; }
.nav-r a:hover { color: var(--fg); text-decoration: none; }
.nav-gh {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  border: 1px solid var(--border);
  padding: .35rem .9rem;
  border-radius: 6px;
  font-size: .85rem;
  color: var(--fg) !important;
}
.nav-gh:hover { border-color: var(--fg3); }
.nav-gh svg { width: 16px; height: 16px; fill: currentColor; }

/* ---- hero ---- */
.hero {
  text-align: center;
  padding: 7rem 0 6rem;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .35rem .9rem;
  border: 1px solid var(--red-border);
  border-radius: 100px;
  font-size: .85rem;
  color: var(--red);
  margin-bottom: 3rem;
}
.hero-badge .dot {
  width: 6px;
  height: 6px;
  background: var(--red);
  border-radius: 50%;
}
.hero h1 {
  font-size: clamp(3.5rem, 9vw, 8.5rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -.05em;
  margin-bottom: 2rem;
}
.hero h1 .accent { color: var(--red); }
.hero h1 .white { color: var(--fg); }
.hero-sub {
  font-size: clamp(1.15rem, 2.2vw, 1.45rem);
  color: var(--fg2);
  max-width: 520px;
  margin: 0 auto 2.5rem;
  line-height: 1.6;
}
.hero-sub strong { color: var(--fg); }
.install-bar {
  display: inline-flex;
  align-items: stretch;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: .6rem;
}
.install-bar code {
  font-family: var(--mono);
  font-size: .92rem;
  padding: .75rem 1.2rem;
  user-select: all;
}
.install-bar .d { color: var(--fg3); }
.copy-btn {
  padding: 0 .9rem;
  background: none;
  border: none;
  border-left: 1px solid var(--border);
  color: var(--fg3);
  cursor: pointer;
  display: flex;
  align-items: center;
}
.copy-btn:hover { color: var(--fg); }
.copy-btn svg { width: 15px; height: 15px; }
.hero .note {
  font-size: .82rem;
  color: var(--fg3);
}

/* ---- term demo ---- */
.term {
  max-width: 560px;
  margin: 4rem auto 0;
  background: #111;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  text-align: left;
}
.term-bar {
  padding: 12px 16px;
  display: flex;
  gap: 6px;
  border-bottom: 1px solid var(--border);
}
.term-dot { width: 10px; height: 10px; border-radius: 50%; }
.term-dot:nth-child(1) { background: #ff5f57; }
.term-dot:nth-child(2) { background: #febc2e; }
.term-dot:nth-child(3) { background: #28c840; }
.term pre {
  margin: 0;
  padding: 1.2rem 1.4rem;
  font-family: var(--mono);
  font-size: .84rem;
  line-height: 2;
  color: var(--fg);
}
.tp { color: var(--fg3); }
.tr { color: var(--red); }
.tg { color: var(--green); }
.tw { color: var(--yellow); }

/* ---- section ---- */
.section {
  padding: 6rem 0;
  border-top: 1px solid var(--border);
}
.section-head {
  margin-bottom: 3rem;
}
.section-head h2 {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -.02em;
  margin-bottom: .3rem;
}
.section-head p {
  color: var(--fg2);
  font-size: 1rem;
}

/* ---- how row ---- */
.how-item {
  padding: 2rem 0;
  border-bottom: 1px solid var(--border);
}
.how-item:last-child { border-bottom: none; }
.how-num {
  font-family: var(--mono);
  font-size: .8rem;
  font-weight: 700;
  color: var(--red);
  margin-bottom: .4rem;
}
.how-item h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: .3rem;
  color: var(--fg);
}
.how-item p {
  font-size: .92rem;
  color: var(--fg2);
  line-height: 1.6;
}
.how-item code {
  font-family: var(--mono);
  font-size: .82rem;
  background: var(--bg2);
  padding: .12em .4em;
  border: 1px solid var(--border);
  border-radius: 3px;
}

/* ---- table ---- */
table {
  width: 100%;
  border-collapse: collapse;
  font-size: .9rem;
}
th {
  text-align: left;
  font-size: .7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--fg3);
  padding-bottom: .6rem;
  border-bottom: 1px solid var(--border);
}
td {
  padding: .65rem .8rem .65rem 0;
  border-bottom: 1px solid #222;
  color: var(--fg2);
}
td:first-child {
  font-family: var(--mono);
  font-size: .82rem;
  color: var(--fg);
  white-space: nowrap;
  font-weight: 500;
}
td:last-child {
  font-family: var(--mono);
  font-size: .78rem;
  color: var(--green);
  white-space: nowrap;
}

/* ---- install section ---- */
.install-section {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 5rem 0;
}
.install-block { margin-bottom: 2rem; }
.install-block:last-child { margin-bottom: 0; }
.install-block h3 {
  font-size: .9rem;
  font-weight: 600;
  margin-bottom: .5rem;
}
.cb {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: .9rem 1.1rem;
  font-family: var(--mono);
  font-size: .82rem;
  line-height: 1.8;
  overflow-x: auto;
}
.cb .c { color: var(--fg3); }
.cb .r { color: var(--red); }

/* ---- cta ---- */
.cta {
  text-align: center;
  padding: 6rem 0;
  border-top: 1px solid var(--border);
}
.cta h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -.02em;
  margin-bottom: .4rem;
}
.cta h2 span { color: var(--red); }
.cta p {
  color: var(--fg2);
  margin-bottom: 2rem;
}

/* ---- footer ---- */
.footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
}
.footer .container {
  display: flex;
  justify-content: space-between;
  font-size: .82rem;
  color: var(--fg3);
}
.footer a { color: var(--fg3); text-decoration: none; }
.footer a:hover { color: var(--fg2); }

/* ---- docs ---- */
.docs-header {
  padding: 5rem 0 2rem;
}
.docs-header h1 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -.02em;
}
.docs-header p { color: var(--fg2); }
.docs-content h2 {
  font-size: 1.15rem;
  font-weight: 600;
  margin: 2.5rem 0 .6rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}
.docs-content h2:first-child { border-top: none; padding-top: 0; }
.docs-content p { color: var(--fg2); margin-bottom: .8rem; }
.docs-content strong { color: var(--fg); }
.docs-content code {
  font-family: var(--mono);
  font-size: .84rem;
  background: var(--bg2);
  padding: .12em .4em;
  border: 1px solid var(--border);
  border-radius: 3px;
}
.docs-content h3 {
  font-family: var(--mono);
  font-size: .88rem;
  font-weight: 600;
  color: var(--red);
  margin: 1.2rem 0 .15rem;
}
.docs-content ul { padding-left: 1.2rem; margin-bottom: .8rem; }
.docs-content li { color: var(--fg2); margin-bottom: .2rem; font-size: .92rem; }

/* ---- responsive ---- */
@media (max-width: 1024px) {
  :root { --cols: 8; --margin: 40px; }
}
@media (max-width: 640px) {
  :root { --cols: 4; --margin: 20px; --gutter: 16px; }
  .nav-r a:not(.nav-gh) { display: none; }
  .hero { padding: 5rem 0 4rem; }
  .term { margin-top: 2.5rem; }
  .section { padding: 4rem 0; }
  td:first-child { white-space: normal; }
  td:last-child { white-space: normal; }
  .footer .container { flex-direction: column; gap: .5rem; text-align: center; }
}