:root {
  color-scheme: dark;
  --bg: #0a0d13;
  --bg-soft: #0f141c;
  --panel: #131923;
  --panel-raised: #19212d;
  --line: #263041;
  --text: #eef1f6;
  --muted: #a5adbb;
  --subtle: #8a93a3;
  --accent: #7cb7ff;
  --accent-light: #b4d6ff;
  --accent-strong: #3d8bff;
  --teal: #5eead4;
  --warn: #f0b429;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --radius: 14px;
  --max: 1160px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.65 var(--sans); -webkit-font-smoothing: antialiased; }
a { color: var(--accent-light); text-decoration: none; }
a:hover { color: #fff; text-decoration: underline; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
code, pre, kbd { font-family: var(--mono); }
code { overflow-wrap: anywhere; }
:not(pre) > code { padding: .1em .38em; border: 1px solid var(--line); border-radius: 5px; background: var(--panel); color: var(--accent-light); font-size: .88em; }
::selection { background: rgba(124,183,255,.3); color: #fff; }
img, svg { max-width: 100%; height: auto; }

.skip-link { position: absolute; top: -60px; left: 1rem; z-index: 200; padding: .7rem 1rem; background: var(--accent); color: #07101d; border-radius: 8px; font-weight: 650; }
.skip-link:focus { top: 1rem; text-decoration: none; }

.nav { position: sticky; top: 0; z-index: 100; background: rgba(10,13,19,.92); border-bottom: 1px solid rgba(255,255,255,.07); backdrop-filter: blur(16px); }
.nav-inner { width: min(var(--max), 100%); min-height: 68px; margin: auto; padding: 0 28px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.logo { display: inline-flex; align-items: center; gap: 10px; color: var(--text); font: 700 1.12rem var(--mono); letter-spacing: -.05em; }
.logo:hover { color: var(--text); text-decoration: none; }
.logo-mark { display: block; width: 28px; height: 28px; }
.nav-links { display: flex; align-items: center; gap: clamp(14px, 2.1vw, 28px); }
.nav-links a { color: #b7bdc9; font-size: .88rem; font-weight: 550; white-space: nowrap; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--text); text-decoration: none; }
.nav-links a[aria-current="page"] { border-bottom: 2px solid var(--accent); padding-bottom: 2px; }
.nav-links .btn-ghost { padding: .52rem .85rem; border: 1px solid var(--line); border-radius: 8px; color: var(--text); }
.nav-links .btn-ghost:hover { border-color: var(--accent); }

.hero { position: relative; isolation: isolate; width: min(var(--max), 100%); margin: auto; padding: 92px 28px 80px; display: grid; grid-template-columns: 1.02fr .98fr; align-items: center; gap: 56px; }
.hero::before { content: ""; position: absolute; z-index: -1; width: 620px; height: 430px; top: -40px; left: -140px; background: radial-gradient(ellipse, rgba(61,139,255,.15), transparent 68%); pointer-events: none; }
.hero-content { max-width: 620px; }
.eyebrow { margin: 0 0 18px; color: var(--accent); font: 600 .76rem/1.4 var(--mono); letter-spacing: .13em; text-transform: uppercase; }
.pulse { display: inline-block; width: 7px; height: 7px; margin: 0 8px 1px 0; border-radius: 50%; background: var(--teal); box-shadow: 0 0 12px rgba(94,234,212,.7); }
h1, h2, h3, h4, p { margin-top: 0; }
.hero h1 { max-width: 720px; margin-bottom: 22px; font-size: clamp(2.5rem, 5vw, 4.2rem); line-height: 1.08; letter-spacing: -.055em; font-weight: 780; }
.hero h1 span, .section-heading h2 span { color: var(--accent); }
.hero-sub { max-width: 590px; margin-bottom: 28px; color: #bcc2cd; font-size: 1.08rem; line-height: 1.75; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 26px; }
.btn-primary, .btn-secondary { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 47px; padding: 0 20px; border-radius: 8px; font-size: .92rem; font-weight: 650; transition: transform .18s ease, border-color .18s ease, background .18s ease; }
.btn-primary { background: var(--accent); color: #07101d; }
.btn-primary:hover { background: var(--accent-light); color: #07101d; text-decoration: none; transform: translateY(-1px); }
.btn-secondary { border: 1px solid #38424f; color: var(--text); }
.btn-secondary:hover { border-color: var(--accent); color: var(--text); text-decoration: none; }
.hero-points { display: flex; flex-wrap: wrap; gap: 9px 22px; margin: 0; padding: 0; list-style: none; color: #aeb5c1; font-size: .82rem; }
.hero-points li { display: flex; gap: 7px; align-items: center; }
.hero-points li span { color: var(--teal); font-weight: 700; }

.terminal { position: relative; overflow: hidden; border: 1px solid #2d3644; border-radius: var(--radius); background: linear-gradient(145deg, #151b26, #0c1017 72%); box-shadow: 0 25px 75px rgba(0,0,0,.4); }
.terminal-bar { display: flex; align-items: center; gap: 7px; height: 46px; padding: 0 16px; border-bottom: 1px solid #262e3b; background: rgba(255,255,255,.025); }
.terminal-bar > span:not(.terminal-label) { width: 8px; height: 8px; border-radius: 50%; background: #e57f72; }
.terminal-bar > span:nth-child(2) { background: #dfba61; }
.terminal-bar > span:nth-child(3) { background: #7dbd82; }
.terminal-label { margin-left: auto; color: #8a93a3; font: .7rem var(--mono); }
.terminal pre, .code-card pre { margin: 0; overflow-x: auto; }
.terminal pre { padding: 22px 22px 26px; }
.terminal code, .code-card code { color: #dde2eb; font-size: .78rem; line-height: 1.9; }
.terminal .prompt { color: var(--accent); }
.terminal .muted, .code-card .muted { color: #8c95a4; }
.terminal .ok { color: var(--teal); }
.terminal-foot { padding: 13px 18px; border-top: 1px solid #252d39; color: #98a1b0; font-size: .74rem; }
.status-dot { display: inline-block; width: 6px; height: 6px; margin-right: 7px; border-radius: 50%; background: var(--teal); }

.trust-strip { display: grid; grid-template-columns: repeat(4, 1fr); width: min(var(--max), calc(100% - 56px)); margin: 0 auto; padding: 20px 0; border-top: 1px solid #202835; border-bottom: 1px solid #202835; }
.trust-strip > div { display: flex; justify-content: center; align-items: center; gap: 10px; padding: 0 8px; color: #adb4c0; font-size: .84rem; text-align: center; }
.trust-strip strong { color: var(--text); }

.section { width: min(var(--max), 100%); margin: auto; padding: 88px 28px; }
.section-alt { width: 100%; max-width: none; background: var(--bg-soft); border-top: 1px solid #1d2531; border-bottom: 1px solid #1d2531; }
.section-alt > .inner { width: min(var(--max), 100%); margin: auto; padding: 0 28px; }
.section-heading { max-width: 760px; margin-bottom: 40px; }
.section-heading h2, .section > h2 { margin-bottom: 14px; font-size: clamp(1.9rem, 3.4vw, 2.7rem); line-height: 1.15; letter-spacing: -.045em; font-weight: 760; }
.section-sub { max-width: 720px; color: var(--muted); font-size: 1.04rem; }
h3 { font-size: 1.12rem; letter-spacing: -.02em; margin-bottom: 8px; }

.grid { display: grid; gap: 18px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.card { padding: 24px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.card p { margin-bottom: 0; color: var(--muted); font-size: .95rem; }
.card .tag { display: inline-block; margin-bottom: 12px; color: var(--accent); font: 600 .72rem var(--mono); letter-spacing: .1em; text-transform: uppercase; }

.steps { counter-reset: step; display: grid; gap: 16px; margin: 0; padding: 0; list-style: none; }
.steps li { counter-increment: step; position: relative; padding: 22px 24px 22px 74px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.steps li::before { content: counter(step); position: absolute; left: 22px; top: 20px; display: grid; place-items: center; width: 34px; height: 34px; border: 1px solid rgba(124,183,255,.55); border-radius: 50%; color: var(--accent); font: 700 .95rem var(--mono); }
.steps li h3 { margin-bottom: 4px; }
.steps li p { margin: 0; color: var(--muted); font-size: .96rem; }

.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
table { width: 100%; border-collapse: collapse; font-size: .92rem; }
caption { padding: 14px 18px; text-align: left; color: var(--subtle); font-size: .82rem; caption-side: bottom; }
th, td { padding: 13px 18px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { color: var(--text); font-size: .78rem; letter-spacing: .06em; text-transform: uppercase; background: var(--panel-raised); }
tr:last-child td { border-bottom: 0; }
td { color: #c6ccd7; }
td:first-child { color: var(--text); font-weight: 600; white-space: nowrap; }
.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }

.code-card { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: #0c1017; }
.code-card .label { display: flex; justify-content: space-between; padding: 10px 18px; border-bottom: 1px solid #222a37; color: var(--subtle); font: .72rem var(--mono); background: rgba(255,255,255,.02); }
.code-card pre { padding: 18px 20px; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; align-items: start; }
.checks { margin: 0; padding: 0; list-style: none; display: grid; gap: 12px; }
.checks li { display: flex; gap: 12px; color: #c9cfda; }
.checks li::before { content: "✓"; color: var(--teal); font-weight: 800; }

.callout { padding: 18px 22px; border: 1px solid rgba(240,180,41,.4); border-left-width: 4px; border-radius: 10px; background: rgba(240,180,41,.06); color: #e6dcc4; font-size: .94rem; }
.callout strong { color: #fff; }

.faq-list { display: grid; gap: 12px; max-width: 860px; }
details { border: 1px solid var(--line); border-radius: 12px; background: var(--panel); }
summary { cursor: pointer; padding: 18px 22px; font-weight: 650; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; float: right; color: var(--accent); font: 600 1.2rem var(--mono); }
details[open] summary::after { content: "–"; }
details p { margin: 0; padding: 0 22px 20px; color: var(--muted); }

.page-head { width: min(var(--max), 100%); margin: auto; padding: 72px 28px 24px; }
.page-head h1 { max-width: 860px; margin-bottom: 16px; font-size: clamp(2.2rem, 4.4vw, 3.4rem); line-height: 1.1; letter-spacing: -.05em; font-weight: 780; }
.page-head .section-sub { font-size: 1.1rem; }
.breadcrumb { margin-bottom: 18px; color: var(--subtle); font-size: .84rem; }
.breadcrumb a { color: var(--muted); }

.layout { width: min(var(--max), 100%); margin: auto; padding: 24px 28px 80px; display: grid; grid-template-columns: 230px 1fr; gap: 48px; }
.toc { position: sticky; top: 92px; align-self: start; font-size: .88rem; }
.toc p { margin-bottom: 10px; color: var(--subtle); font: 600 .72rem var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.toc ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 7px; border-left: 1px solid var(--line); }
.toc a { display: block; padding: 2px 0 2px 14px; color: var(--muted); }
.toc a:hover { color: var(--text); text-decoration: none; }
.prose { min-width: 0; max-width: 820px; }
.prose h2 { margin: 56px 0 14px; padding-top: 8px; font-size: 1.7rem; letter-spacing: -.04em; line-height: 1.2; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { margin: 30px 0 8px; font-size: 1.16rem; }
.prose p, .prose li { color: #c4cad5; }
.prose ul, .prose ol { padding-left: 1.3rem; }
.prose li { margin-bottom: 6px; }
.prose .table-wrap, .prose .code-card, .prose .callout { margin: 20px 0; }
.diagram { margin: 24px 0; padding: 18px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.diagram svg { display: block; width: 100%; height: auto; }
.diagram figcaption { margin-top: 10px; color: var(--subtle); font-size: .82rem; text-align: center; }

.cta-band { width: min(var(--max), calc(100% - 56px)); margin: 0 auto 88px; padding: 42px; border: 1px solid rgba(124,183,255,.3); border-radius: 18px; background: linear-gradient(135deg, rgba(61,139,255,.14), rgba(94,234,212,.06)); display: flex; justify-content: space-between; align-items: center; gap: 28px; flex-wrap: wrap; }
.cta-band h2 { margin: 0 0 6px; font-size: 1.6rem; letter-spacing: -.03em; }
.cta-band p { margin: 0; color: var(--muted); }

.footer { border-top: 1px solid #1d2531; background: #080b10; }
.footer-inner { width: min(var(--max), 100%); margin: auto; padding: 44px 28px 28px; display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.footer-brand p { margin: 10px 0 0; max-width: 320px; color: var(--subtle); font-size: .9rem; }
.footer-links { display: grid; grid-template-columns: repeat(2, minmax(150px, auto)); gap: 9px 40px; align-content: start; font-size: .9rem; }
.footer-links a { color: var(--muted); }
.footer-links a:hover { color: var(--text); }
.footer-bottom { width: min(var(--max), 100%); margin: auto; padding: 18px 28px 34px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; border-top: 1px solid #161c26; color: var(--subtle); font-size: .82rem; }

@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; padding-top: 64px; gap: 40px; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .split, .layout { grid-template-columns: 1fr; gap: 28px; }
  .toc { position: static; }
  .trust-strip { grid-template-columns: 1fr 1fr; gap: 14px 0; }
  .nav-links a:not(.btn-ghost) { display: none; }
  .nav-links a[aria-current="page"], .nav-links a.keep { display: inline; }
}
@media (max-width: 620px) {
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .section { padding: 60px 20px; }
  .hero, .page-head, .layout, .nav-inner, .footer-inner, .footer-bottom { padding-left: 20px; padding-right: 20px; }
  .steps li { padding-left: 64px; }
  .cta-band { padding: 28px 22px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }

.mt-18 { margin-top: 18px; }
.mt-20 { margin-top: 20px; }
.mt-22 { margin-top: 22px; }
.mt-26 { margin-top: 26px; }
.split-title { margin-bottom: 16px; font-size: clamp(1.9rem, 3.4vw, 2.7rem); line-height: 1.15; letter-spacing: -.045em; font-weight: 760; }
.split-title span { color: var(--accent); }
.layout.single { grid-template-columns: minmax(0, 820px); }