/* linkgap landing page — self-contained, no external requests */

@font-face {
  font-family: "InterVariable";
  src: url("fonts/InterVariable.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

/* ─────────────── tokens (same palette as the app) ─────────────── */

:root {
  color-scheme: light;

  --font-sans: "InterVariable", Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --bg: #FAFAFA;
  --surface: #FFFFFF;
  --surface-2: #F4F4F5;
  --surface-3: #EBEBEE;
  --border: #E4E4E7;
  --border-strong: #D4D4D8;
  --text: #18181B;
  --text-2: #52525B;
  --text-3: #71717A;
  --accent: #2F5FD0;
  --accent-hover: #264FB0;
  --accent-subtle: #EAF0FC;
  --on-accent: #FFFFFF;
  --focus-ring: #2F5FD0;

  --good: #0CA30C;
  --spam: #D03B3B;
  --warning: #B45309;
  --sample-bg: #FEF3C7;
  --sample-fg: #92400E;

  --r-control: 6px;
  --r-card: 10px;
  --r-lg: 14px;
  --r-pill: 999px;

  --shadow-sm: 0 1px 2px rgb(0 0 0 / .05);
  --shadow-md: 0 4px 12px rgb(0 0 0 / .08);
  --shadow-lg: 0 18px 44px rgb(0 0 0 / .10);

  --content-max: 1120px;
  --pad: 24px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #0B0B0D;
    --surface: #131316;
    --surface-2: #1A1A1F;
    --surface-3: #232329;
    --border: #26262C;
    --border-strong: #34343C;
    --text: #EDEDF0;
    --text-2: #A1A1AA;
    --text-3: #8B8B94;
    --accent: #6E95F0;
    --accent-hover: #88A8F4;
    --accent-subtle: #17213A;
    --on-accent: #0B0B0D;
    --focus-ring: #6E95F0;
    --warning: #F59E0B;
    --sample-bg: #3A2A0A;
    --sample-fg: #FCD34D;
    --shadow-sm: none;
    --shadow-md: none;
    --shadow-lg: 0 18px 44px rgb(0 0 0 / .5);
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0B0B0D;
  --surface: #131316;
  --surface-2: #1A1A1F;
  --surface-3: #232329;
  --border: #26262C;
  --border-strong: #34343C;
  --text: #EDEDF0;
  --text-2: #A1A1AA;
  --text-3: #8B8B94;
  --accent: #6E95F0;
  --accent-hover: #88A8F4;
  --accent-subtle: #17213A;
  --on-accent: #0B0B0D;
  --focus-ring: #6E95F0;
  --warning: #F59E0B;
  --sample-bg: #3A2A0A;
  --sample-fg: #FCD34D;
  --shadow-sm: none;
  --shadow-md: none;
  --shadow-lg: 0 18px 44px rgb(0 0 0 / .5);
}

/* ─────────────── base ─────────────── */

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

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 17px/1.6 var(--font-sans);
  font-feature-settings: "cv11", "ss01";
  -webkit-font-smoothing: antialiased;
  overflow-wrap: break-word;
}

h1, h2, h3 { margin: 0; letter-spacing: -0.021em; line-height: 1.15; font-weight: 640; }
p { margin: 0; }
b { font-weight: 620; }
s { color: var(--text-3); text-decoration-thickness: 1.5px; }

code {
  font: 500 0.88em/1.4 var(--font-mono);
  overflow-wrap: anywhere;
}

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--accent-hover); }

:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
  border-radius: 2px;
}

img { max-width: 100%; height: auto; display: block; }

.skip {
  position: absolute;
  left: -9999px;
  top: 8px;
  z-index: 10;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-control);
  padding: 8px 14px;
  text-decoration: none;
}
.skip:focus { left: 16px; }

.wrap {
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--pad);
}
.wrap.narrow { max-width: 780px; }
.center { text-align: center; }

/* ─────────────── header ─────────────── */

.site-header {
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  position: sticky;
  top: 0;
  z-index: 5;
  backdrop-filter: blur(8px);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  height: 62px;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 18px;
  letter-spacing: -0.02em;
  flex: none;
}
.wordmark b { font-weight: 640; }
.mark { border-radius: 6px; flex: none; }

.header-nav {
  display: flex;
  gap: 22px;
  margin-left: auto;
  font-size: 15px;
}
.header-nav a {
  color: var(--text-2);
  text-decoration: none;
}
.header-nav a:hover { color: var(--text); }

/* ─────────────── buttons ─────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font: 520 15px/1 var(--font-sans);
  text-decoration: none;
  border-radius: var(--r-control);
  padding: 0 16px;
  height: 38px;
  border: 1px solid transparent;
  white-space: nowrap;
  transition: background-color 160ms cubic-bezier(.2,0,0,1), transform 160ms cubic-bezier(.2,0,0,1);
}
.btn-primary {
  background: var(--accent);
  color: var(--on-accent);
}
.btn-primary:hover {
  background: var(--accent-hover);
  color: var(--on-accent);
}
.btn-sm { height: 34px; font-size: 14px; padding: 0 13px; }
.btn-lg { height: 46px; font-size: 16.5px; padding: 0 24px; }

@media (prefers-reduced-motion: reduce) {
  .btn { transition: none; }
}

/* ─────────────── hero ─────────────── */

.hero {
  padding: 84px 0 24px;
}

.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 560;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-subtle);
  border-radius: var(--r-pill);
  padding: 5px 12px;
  margin-bottom: 20px;
}

h1 {
  font-size: clamp(34px, 5.4vw, 58px);
  letter-spacing: -0.028em;
  line-height: 1.06;
  max-width: 24ch;
}
.h1-2 { color: var(--text-3); }

.lede {
  margin-top: 22px;
  max-width: 62ch;
  font-size: clamp(17px, 1.6vw, 20px);
  line-height: 1.55;
  color: var(--text-2);
}

.cta-row {
  margin-top: 30px;
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}
.cta-note {
  font-size: 14.5px;
  color: var(--text-3);
  max-width: 34ch;
}

/* fact strip */

.facts {
  list-style: none;
  margin: 46px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  overflow: hidden;
}
.fact {
  background: var(--surface);
  padding: 22px 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.fact-num {
  font-size: clamp(30px, 3.6vw, 40px);
  font-weight: 650;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  line-height: 1.05;
}
.fact-num s {
  font-size: 0.62em;
  font-weight: 560;
  margin-right: 6px;
}
.fact-label {
  font-size: 14.5px;
  line-height: 1.45;
  color: var(--text-2);
}
.facts-caption {
  margin-top: 16px;
  font-size: 14.5px;
  color: var(--text-3);
  max-width: 76ch;
}

/* ─────────────── screenshots ─────────────── */

.shot {
  margin: 40px 0 0;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  background: var(--surface);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.shot img { width: 100%; }
.shot-hero { margin-top: 56px; }

.shot-note {
  margin-top: 14px;
  font-size: 14.5px;
  color: var(--text-3);
}

/* ─────────────── sections ─────────────── */

.section { padding: 96px 0; }
.section-alt {
  background: var(--surface-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

h2 {
  font-size: clamp(27px, 3.4vw, 40px);
  letter-spacing: -0.026em;
  line-height: 1.12;
  max-width: 22ch;
}
.center h2 { margin-inline: auto; }

.section-lede {
  margin-top: 18px;
  max-width: 68ch;
  font-size: clamp(16.5px, 1.5vw, 18.5px);
  color: var(--text-2);
}
.center .section-lede { margin-inline: auto; }

.section-head { margin-bottom: 52px; }
.section-head .eyebrow { margin-bottom: 16px; }

/* problem */

.problem-grid {
  margin-top: 44px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.pcard {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}
.pcard h3 {
  font-size: 17.5px;
  line-height: 1.3;
  margin-bottom: 10px;
}
.pcard p {
  font-size: 15.5px;
  color: var(--text-2);
  line-height: 1.55;
}

/* steps */

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 72px;
  counter-reset: step;
}
.step-head {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}
.step-n {
  flex: none;
  width: 38px;
  height: 38px;
  border-radius: var(--r-pill);
  background: var(--accent);
  color: var(--on-accent);
  display: grid;
  place-items: center;
  font-size: 17px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.step h3 {
  font-size: 23px;
  margin-bottom: 10px;
}
.step-head p {
  color: var(--text-2);
  font-size: 16.5px;
  max-width: 68ch;
}

/* network section */

.net-grid {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 24px;
  align-items: start;
}
.evidence, .ba {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  padding: 26px 26px 28px;
  box-shadow: var(--shadow-sm);
}
.evidence h3, .ba h3 {
  font-size: 18px;
  margin-bottom: 18px;
}

.evi { margin: 0; }
.evi-row {
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: 16px;
  padding: 14px 0;
  border-top: 1px solid var(--border);
}
.evi-row:first-child { border-top: 0; padding-top: 0; }
.evi dt {
  font-weight: 560;
  font-size: 15.5px;
  position: relative;
  padding-left: 20px;
}
.evi dt::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.44em;
  width: 9px;
  height: 9px;
  border-radius: 2px;
  background: var(--spam);
}
.evi dd {
  margin: 0;
  font-size: 15.5px;
  color: var(--text-2);
  line-height: 1.55;
}

.ba-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 12.5px;
  font-weight: 560;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-3);
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
.ba-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.ba-list li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 14px;
  padding: 13px 0;
  border-bottom: 1px solid var(--border);
  font-variant-numeric: tabular-nums;
  font-size: 15px;
}
.ba-list code { color: var(--text-2); }
.ba-list b { font-weight: 620; }
.ba-total {
  font-weight: 560;
  border-bottom: 0 !important;
}
.ba-note {
  margin-top: 18px;
  font-size: 15px;
  color: var(--text-2);
  line-height: 1.55;
}

/* providers */

.prov-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.prov {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  padding: 22px;
  box-shadow: var(--shadow-sm);
}
.prov h3 {
  font-size: 17.5px;
  margin: 12px 0 10px;
}
.prov p {
  font-size: 15px;
  color: var(--text-2);
  line-height: 1.55;
}
.prov-soon { background: transparent; box-shadow: none; border-style: dashed; }

.pill {
  display: inline-block;
  font-size: 12px;
  font-weight: 560;
  letter-spacing: 0.02em;
  border-radius: var(--r-pill);
  padding: 4px 10px;
  background: var(--surface-3);
  color: var(--text-2);
}
.pill-ok {
  background: var(--accent-subtle);
  color: var(--accent);
}

.guards {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.guards li {
  font-size: 15.5px;
  color: var(--text-2);
  line-height: 1.55;
  padding-left: 16px;
  border-left: 2px solid var(--accent);
}
.guards b { color: var(--text); display: block; }

/* limits */

.limits {
  list-style: none;
  margin: 44px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}
.limits li {
  padding: 24px 0;
  border-top: 1px solid var(--border);
}
.limits h3 {
  font-size: 18px;
  margin-bottom: 8px;
}
.limits p {
  color: var(--text-2);
  font-size: 16px;
}

/* faq */

.faq {
  margin-top: 40px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.qa {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  padding: 24px 26px;
}
.qa h3 {
  font-size: 17.5px;
  margin-bottom: 10px;
}
.qa p {
  color: var(--text-2);
  font-size: 16px;
}

/* final cta */

.cta-final { padding: 104px 0 112px; }
.center-row { justify-content: center; }
.center-note {
  margin-top: 18px;
  margin-inline: auto;
  max-width: 46ch;
  text-align: center;
}

/* footer */

.site-footer {
  border-top: 1px solid var(--border);
  background: var(--surface-2);
  padding: 34px 0 44px;
}
.footer-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
.footer-note {
  font-size: 14px;
  color: var(--text-3);
  max-width: 54ch;
  flex: 1 1 320px;
}
.footer-mail {
  font-size: 14.5px;
  margin-left: auto;
}

/* ─────────────── responsive ─────────────── */

@media (max-width: 980px) {
  .net-grid { grid-template-columns: 1fr; }
  .prov-grid { grid-template-columns: repeat(2, 1fr); }
  .guards { grid-template-columns: 1fr; }
  .header-nav { display: none; }
}

@media (max-width: 760px) {
  body { font-size: 16px; }
  .hero { padding: 56px 0 16px; }
  .section { padding: 68px 0; }
  .cta-final { padding: 76px 0 84px; }
  .facts { grid-template-columns: 1fr; }
  .problem-grid { grid-template-columns: 1fr; }
  .steps { gap: 56px; }
  .shot { margin-top: 28px; border-radius: 10px; }
  .shot-hero { margin-top: 36px; }
  .section-head { margin-bottom: 36px; }
  h1 { max-width: none; }
  h2 { max-width: none; }
  .evi-row { grid-template-columns: 1fr; gap: 6px; }
  .cta-note { max-width: none; }
}

@media (max-width: 560px) {
  :root { --pad: 16px; }
  .header-inner { height: 58px; gap: 12px; }
  .prov-grid { grid-template-columns: 1fr; }
  .step-head { gap: 14px; }
  .step-n { width: 32px; height: 32px; font-size: 15px; }
  .evidence, .ba, .qa, .pcard, .prov { padding: 20px; }
  .ba-list li { font-size: 14px; }
  .btn-lg { width: 100%; }
  .cta-row { gap: 14px; }
  .footer-mail { margin-left: 0; }
}

/* Header: returning users sign in, new ones create an account */
.header-actions { display: inline-flex; align-items: center; gap: 14px; flex: none; }
.header-signin { color: var(--text-2); font-size: 14px; font-weight: 500; text-decoration: none; }
.header-signin:hover { color: var(--text); }