/* SubnetSleuth site: one stylesheet, no framework. Colours come from the app icon. */
:root {
  --ink: #0f172a;
  --ink-2: #334155;
  --ink-3: #64748b;
  --line: #e2e8f0;
  --paper: #ffffff;
  --paper-2: #f6f8fc;
  --navy: #0b1530;
  --navy-2: #13224a;
  --blue: #1f4fd8;
  --blue-2: #1a3fb0;
  --blue-soft: #e8efff;
  --sky: #bfd6ff;
  --accent: #f59e0b;
  --accent-2: #d98706;
  --green: #15803d;
  --red: #b91c1c;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(15, 23, 42, .06), 0 8px 28px rgba(15, 23, 42, .08);
  --shadow-lg: 0 30px 80px rgba(2, 8, 30, .35);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI Variable", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: "Cascadia Code", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; font-family: var(--font); color: var(--ink); background: var(--paper); line-height: 1.6; font-size: 17px; }
img, video { max-width: 100%; height: auto; display: block; }
a { color: var(--blue); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--blue-2); }
h1, h2, h3, h4 { line-height: 1.2; letter-spacing: -.015em; margin: 0 0 .5em; }
h1 { font-size: clamp(2.1rem, 4.6vw, 3.4rem); letter-spacing: -.025em; }
h2 { font-size: clamp(1.6rem, 3vw, 2.25rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; }
code, kbd, pre { font-family: var(--mono); font-size: .9em; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--paper); padding: 8px 12px; z-index: 100; }
.skip:focus { left: 8px; }
.wrap { width: min(1180px, 100% - 40px); margin-inline: auto; }
.narrow { width: min(780px, 100% - 40px); margin-inline: auto; }

/* ---- header ---- */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(11, 21, 48, .94); backdrop-filter: saturate(160%) blur(10px); border-bottom: 1px solid rgba(255, 255, 255, .08); }
.header-row { display: flex; align-items: center; gap: 24px; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: #fff; text-decoration: none; font-weight: 700; font-size: 1.12rem; letter-spacing: -.01em; }
.brand:hover { color: #fff; }
.logo { width: 32px; height: 32px; flex: none; }
.site-nav { margin-left: auto; display: flex; align-items: center; gap: 4px; }
.site-nav a:not(.btn) { color: #cbd5e1; text-decoration: none; padding: 8px 12px; border-radius: 8px; font-size: .96rem; }
.site-nav a:not(.btn):hover, .site-nav a[aria-current] { color: #fff; background: rgba(255, 255, 255, .08); }
.site-nav .btn { margin-left: 10px; }
.nav-toggle { display: none; margin-left: auto; background: none; border: 0; padding: 10px; cursor: pointer; }
.nav-toggle .bars, .nav-toggle .bars::before, .nav-toggle .bars::after { display: block; width: 22px; height: 2px; background: #fff; position: relative; content: ""; }
.nav-toggle .bars::before { position: absolute; top: -7px; }
.nav-toggle .bars::after { position: absolute; top: 7px; }
@media (max-width: 880px) {
  .nav-toggle { display: block; }
  .site-nav { display: none; position: absolute; top: 64px; left: 0; right: 0; flex-direction: column; align-items: stretch; padding: 12px 20px 20px; background: var(--navy); border-bottom: 1px solid rgba(255, 255, 255, .1); }
  .site-nav.open { display: flex; }
  .site-nav .btn { margin: 8px 0 0; text-align: center; }
}

/* ---- buttons ---- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 13px 22px; border-radius: 10px; font-weight: 650; font-size: 1rem; text-decoration: none; border: 1px solid transparent; cursor: pointer; transition: background .15s, transform .15s, box-shadow .15s; font-family: inherit; line-height: 1.2; }
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--blue); color: #fff; box-shadow: 0 6px 18px rgba(31, 79, 216, .35); }
.btn-primary:hover { background: var(--blue-2); color: #fff; }
.btn-accent { background: var(--accent); color: #1b1300; box-shadow: 0 6px 18px rgba(245, 158, 11, .35); }
.btn-accent:hover { background: #fbbf24; color: #1b1300; }
.btn-ghost { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .3); }
.btn-ghost:hover { background: rgba(255, 255, 255, .08); color: #fff; }
.btn-outline { background: var(--paper); color: var(--blue); border-color: #c7d4f3; }
.btn-outline:hover { border-color: var(--blue); color: var(--blue-2); }
.btn-sm { padding: 8px 14px; font-size: .92rem; }
.btn-block { width: 100%; }
.btn[disabled], .btn.is-disabled { opacity: .55; pointer-events: none; }

/* ---- hero ---- */
.hero { position: relative; color: #e2e8f0; z-index: 0; background: radial-gradient(1100px 520px at 75% -10%, #2448b8 0%, rgba(36, 72, 184, 0) 60%), radial-gradient(800px 400px at 0% 0%, #12306f 0%, rgba(18, 48, 111, 0) 55%), var(--navy); }
.hero::after { content: ""; position: absolute; inset: 0; background-image: radial-gradient(rgba(191, 214, 255, .14) 1px, transparent 1px); background-size: 26px 26px; mask-image: linear-gradient(to bottom, rgba(0, 0, 0, .6), transparent 70%); pointer-events: none; }
.hero .wrap { position: relative; z-index: 1; }
.hero-copy { padding: 56px 0 28px; max-width: 820px; }
.hero h1 { color: #fff; }
.hero h1 em { font-style: normal; color: var(--accent); }
.hero .lede { font-size: clamp(1.08rem, 1.6vw, 1.3rem); color: #cbd5e1; max-width: 700px; }
.hero .ctas { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 14px; }
.hero .fine { font-size: .9rem; color: #94a3b8; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: .82rem; font-weight: 650; letter-spacing: .06em; text-transform: uppercase; color: var(--sky); background: rgba(191, 214, 255, .1); border: 1px solid rgba(191, 214, 255, .2); padding: 5px 12px; border-radius: 999px; margin-bottom: 18px; }
.eyebrow.light { color: var(--blue); background: var(--blue-soft); border-color: #cfdcfb; }
.hero-shot { margin: 18px auto -120px; max-width: 1120px; }
.hero + .after-hero { padding-top: 160px; }
.page-hero { color: #e2e8f0; background: radial-gradient(900px 380px at 80% -20%, #2448b8 0%, rgba(36, 72, 184, 0) 60%), var(--navy); padding: 64px 0 56px; }
.page-hero h1 { color: #fff; font-size: clamp(1.9rem, 3.8vw, 2.8rem); }
.page-hero p { color: #cbd5e1; font-size: 1.12rem; max-width: 760px; margin: 0; }

/* ---- screenshots ---- */
.shot { border-radius: 12px; overflow: hidden; background: #fff; box-shadow: var(--shadow); border: 1px solid var(--line); }
.shot.window { box-shadow: var(--shadow-lg); border: 1px solid rgba(255, 255, 255, .12); }
.shot .bar { display: flex; align-items: center; gap: 7px; height: 30px; padding: 0 12px; background: #e9edf5; border-bottom: 1px solid #d5dbe7; }
.shot .bar i { width: 11px; height: 11px; border-radius: 50%; background: #cfd6e3; display: block; }
.shot .bar span { margin-left: 8px; font-size: .78rem; color: #64748b; font-weight: 600; }
figure { margin: 0; }
figcaption { font-size: .9rem; color: var(--ink-3); margin-top: 10px; }

/* ---- sections ---- */
section { padding: 88px 0; }
.section-tight { padding: 56px 0; }
.alt { background: var(--paper-2); border-block: 1px solid var(--line); }
.dark { background: var(--navy); color: #cbd5e1; }
.dark h2, .dark h3 { color: #fff; }
.section-head { max-width: 760px; margin-bottom: 44px; }
.section-head.center { text-align: center; margin-inline: auto; }
.section-head p { color: var(--ink-2); font-size: 1.1rem; }
.dark .section-head p { color: #cbd5e1; }
.grid { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 980px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } section { padding: 64px 0; } }
.card { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; box-shadow: 0 1px 2px rgba(15, 23, 42, .04); }
.card h3 { margin-bottom: .4em; }
.card p { color: var(--ink-2); margin: 0; }
.card .icon { width: 42px; height: 42px; border-radius: 11px; display: grid; place-items: center; background: var(--blue-soft); color: var(--blue); margin-bottom: 16px; }
.card .icon svg { width: 22px; height: 22px; }
.dark .card { background: var(--navy-2); border-color: rgba(255, 255, 255, .08); }
.dark .card p { color: #cbd5e1; }
.dark .card .icon { background: rgba(191, 214, 255, .12); color: var(--sky); }

/* feature rows: text beside a picture */
.feature-row { display: grid; grid-template-columns: 1fr 1.25fr; gap: 56px; align-items: center; }
.feature-row + .feature-row { margin-top: 96px; }
.feature-row.flip > :first-child { order: 2; }
.feature-row h3 { font-size: 1.55rem; }
.feature-row p { color: var(--ink-2); }
@media (max-width: 900px) { .feature-row { grid-template-columns: 1fr; gap: 28px; } .feature-row.flip > :first-child { order: 0; } .feature-row + .feature-row { margin-top: 64px; } }
.ticks { list-style: none; padding: 0; margin: 18px 0 0; }
.ticks li { position: relative; padding-left: 30px; margin: 9px 0; color: var(--ink-2); }
.ticks li::before { content: ""; position: absolute; left: 0; top: .32em; width: 18px; height: 18px; border-radius: 50%; background: var(--blue-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M5 10.5l3 3 7-7' fill='none' stroke='%231f4fd8' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/14px no-repeat; }
.dark .ticks li { color: #cbd5e1; }
.dark .ticks li::before { background-color: rgba(191, 214, 255, .14); }

/* steps */
.steps { counter-reset: step; }
.step { position: relative; padding-left: 64px; }
.step::before { counter-increment: step; content: counter(step); position: absolute; left: 0; top: 0; width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; background: var(--blue); color: #fff; font-weight: 700; font-size: 1.1rem; }

/* stats / proof strip */
.proof { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); overflow: hidden; }
.proof div { padding: 22px 24px; border-right: 1px solid var(--line); }
.proof div:last-child { border-right: 0; }
.proof b { display: block; font-size: 1.5rem; color: var(--ink); letter-spacing: -.02em; }
.proof span { color: var(--ink-3); font-size: .92rem; }
@media (max-width: 760px) { .proof { grid-template-columns: repeat(2, 1fr); } .proof div:nth-child(2) { border-right: 0; } .proof div:nth-child(-n+2) { border-bottom: 1px solid var(--line); } }
@media (max-width: 480px) { .proof { grid-template-columns: 1fr; } .proof div { border-right: 0; border-bottom: 1px solid var(--line); } .proof div:last-child { border-bottom: 0; } .hero-copy { padding-top: 36px; } .eyebrow { font-size: .72rem; } }

/* logos-ish chips */
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { font-size: .86rem; padding: 6px 12px; border-radius: 999px; background: var(--paper); border: 1px solid var(--line); color: var(--ink-2); }
.dark .chip { background: rgba(255, 255, 255, .06); border-color: rgba(255, 255, 255, .12); color: #e2e8f0; }

/* ---- pricing ---- */
.plans { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; align-items: stretch; }
@media (max-width: 1080px) { .plans { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .plans { grid-template-columns: 1fr; } }
.plan { display: flex; flex-direction: column; background: var(--paper); border: 1px solid var(--line); border-radius: 16px; padding: 28px 24px; box-shadow: 0 1px 2px rgba(15, 23, 42, .04); }
.plan.featured { border: 2px solid var(--blue); box-shadow: 0 18px 50px rgba(31, 79, 216, .18); position: relative; }
.plan .tag { position: absolute; top: -13px; left: 24px; background: var(--blue); color: #fff; font-size: .78rem; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; padding: 4px 10px; border-radius: 999px; }
.plan h3 { font-size: 1.25rem; margin: 0 0 6px; }
.plan .for { color: var(--ink-3); font-size: .95rem; min-height: 3em; margin: 0; }
.plan .price { margin: 18px 0 2px; font-size: 2.6rem; font-weight: 750; letter-spacing: -.03em; color: var(--ink); line-height: 1; }
.plan .price small { font-size: 1rem; font-weight: 500; color: var(--ink-3); letter-spacing: 0; }
.plan .per { color: var(--ink-3); font-size: .92rem; margin-bottom: 20px; min-height: 1.5em; }
.plan .ticks { margin: 4px 0 24px; flex: 1; font-size: .96rem; }
.plan form { margin: 0; }
.plan .note { font-size: .82rem; color: var(--ink-3); margin: 10px 0 0; text-align: center; }
.mode-banner { display: none; margin: 0 auto 28px; max-width: 860px; padding: 12px 18px; border-radius: 12px; background: #fff7e6; border: 1px solid #f7d28a; color: #6b4a00; font-size: .95rem; text-align: center; }
.mode-banner.show { display: block; }
.compare { width: 100%; border-collapse: collapse; font-size: .96rem; }
.compare th, .compare td { padding: 12px 14px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.compare thead th { font-size: .85rem; text-transform: uppercase; letter-spacing: .04em; color: var(--ink-3); }
.compare td:not(:first-child), .compare th:not(:first-child) { text-align: center; }
.table-scroll { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); }

/* ---- FAQ ---- */
.faq details { border-bottom: 1px solid var(--line); padding: 18px 0; }
.faq summary { cursor: pointer; font-weight: 650; font-size: 1.06rem; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--blue); font-size: 1.4rem; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq details p { color: var(--ink-2); margin: 12px 0 0; }

/* ---- prose (docs, legal, changelog) ---- */
.prose { font-size: 1.02rem; }
.prose h1 { font-size: 2.2rem; }
.prose h2 { font-size: 1.55rem; margin-top: 2.2em; padding-top: .2em; }
.prose h3 { font-size: 1.18rem; margin-top: 1.8em; }
.prose p, .prose li { color: var(--ink-2); }
.prose ul, .prose ol { padding-left: 1.4em; }
.prose li { margin: .35em 0; }
.prose pre { background: #0f172a; color: #e2e8f0; padding: 16px 18px; border-radius: 10px; overflow-x: auto; line-height: 1.5; }
.prose code { background: #eef2f8; padding: .12em .38em; border-radius: 5px; color: #0f172a; }
.prose pre code { background: none; padding: 0; color: inherit; }
.prose table { border-collapse: collapse; width: 100%; margin: 1.2em 0; font-size: .95rem; display: block; overflow-x: auto; }
.prose th, .prose td { border: 1px solid var(--line); padding: 9px 12px; text-align: left; vertical-align: top; }
.prose th { background: var(--paper-2); }
.prose blockquote { margin: 1.2em 0; padding: 12px 18px; border-left: 4px solid var(--blue); background: var(--blue-soft); border-radius: 0 10px 10px 0; }
.prose blockquote p { margin: 0; color: var(--ink); }
.prose img { border-radius: 10px; border: 1px solid var(--line); box-shadow: var(--shadow); margin: 1.4em 0; }
.docs-layout { display: grid; grid-template-columns: 230px 1fr; gap: 56px; padding: 56px 0 96px; }
.docs-nav { position: sticky; top: 88px; align-self: start; font-size: .95rem; }
.docs-nav h2 { font-size: .8rem; text-transform: uppercase; letter-spacing: .06em; color: var(--ink-3); margin: 0 0 10px; }
.docs-nav a { display: block; padding: 6px 10px; border-radius: 8px; color: var(--ink-2); text-decoration: none; }
.docs-nav a:hover { background: var(--paper-2); }
.docs-nav a[aria-current] { background: var(--blue-soft); color: var(--blue); font-weight: 600; }
@media (max-width: 860px) { .docs-layout { grid-template-columns: 1fr; gap: 24px; } .docs-nav { position: static; } }
.legal-meta { color: var(--ink-3); font-size: .95rem; }

/* ---- callouts ---- */
.callout { border-radius: var(--radius); padding: 22px 24px; background: var(--blue-soft); border: 1px solid #cfdcfb; }
.callout.warn { background: #fff7e6; border-color: #f7d28a; }
.callout h3 { margin-bottom: .3em; }
.callout p:last-child { margin-bottom: 0; }

/* ---- download ---- */
.dl-card { display: grid; grid-template-columns: auto 1fr auto; gap: 18px; align-items: center; padding: 22px 24px; }
.dl-card .os { width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; background: var(--blue-soft); color: var(--blue); }
.dl-card .os svg { width: 24px; height: 24px; }
.dl-card h3 { margin: 0 0 2px; font-size: 1.1rem; }
.dl-card p { margin: 0; font-size: .92rem; color: var(--ink-3); }
@media (max-width: 640px) { .dl-card { grid-template-columns: 1fr; } }
.hash { font-family: var(--mono); font-size: .78rem; color: var(--ink-3); word-break: break-all; }

/* ---- licence key (purchase) ---- */
.keybox { font-family: var(--mono); font-size: .86rem; word-break: break-all; background: #0f172a; color: #e2e8f0; padding: 18px; border-radius: 10px; line-height: 1.5; user-select: all; }
.status { padding: 14px 18px; border-radius: 10px; background: var(--paper-2); border: 1px solid var(--line); }
.status.ok { background: #ecfdf3; border-color: #a7e3bd; color: #14532d; }
.status.err { background: #fef2f2; border-color: #f5b5b5; color: #7f1d1d; }

/* ---- CTA band ---- */
.cta-band { text-align: center; background: radial-gradient(700px 300px at 50% 0%, #2448b8 0%, rgba(36, 72, 184, 0) 70%), var(--navy); color: #cbd5e1; }
.cta-band h2 { color: #fff; }
.cta-band .ctas { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 26px; }

/* ---- video ---- */
.video { border-radius: 14px; overflow: hidden; box-shadow: var(--shadow-lg); background: #000; aspect-ratio: 16 / 9; }
.video video { width: 100%; height: 100%; }

/* ---- footer ---- */
.site-footer { background: var(--navy); color: #94a3b8; padding: 64px 0 28px; font-size: .95rem; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 32px; }
.footer-grid h2 { color: #e2e8f0; font-size: .82rem; text-transform: uppercase; letter-spacing: .07em; margin-bottom: 14px; }
.footer-grid a:not(.brand) { display: block; color: #94a3b8; text-decoration: none; padding: 4px 0; }
.footer-grid a:not(.brand):hover { color: #fff; }
.footer-brand p { margin-top: 14px; max-width: 320px; }
.footer-base { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; border-top: 1px solid rgba(255, 255, 255, .08); margin-top: 44px; padding-top: 22px; font-size: .86rem; }
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr 1fr; } .footer-brand { grid-column: 1 / -1; } }

/* small helpers */
.center { text-align: center; }
.muted { color: var(--ink-3); }
.mt-0 { margin-top: 0; } .mt-1 { margin-top: 12px; } .mt-2 { margin-top: 24px; } .mt-3 { margin-top: 40px; }
.mb-0 { margin-bottom: 0; }
.lead { font-size: 1.15rem; color: var(--ink-2); }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } }
.page-hero a { color: var(--sky); }
.page-body { padding: 56px 0 96px; }
.docs-layout > article, .split > *, .feature-row > *, .grid > * { min-width: 0; }
.shot.tall { max-width: 440px; justify-self: center; }
.prose code { overflow-wrap: anywhere; }
.org-field { max-width: 560px; margin: 0 auto 30px; text-align: center; }
.org-field label { display: block; font-weight: 600; margin-bottom: 8px; font-size: .97rem; }
.org-field input { width: 100%; padding: 11px 14px; border: 1px solid #c7d4f3; border-radius: 10px; font: inherit; color: var(--ink); background: var(--paper); }
.org-field input:focus { outline: 3px solid var(--accent); outline-offset: 1px; border-color: var(--blue); }
.plan .btn[type="submit"] { width: 100%; }