:root {
  --bg: #06080c;
  --bg-raised: #0b0f16;
  --panel: #0f141d;
  --panel-2: #131a25;
  --line: #1c2533;
  --line-strong: #2a3647;
  --ink: #e9eef5;
  --ink-2: #a9b4c4;
  --ink-3: #738096;
  --accent: #35b6ff;
  --accent-2: #7fd3ff;
  --accent-ink: #03111b;
  --accent-glow: rgba(53, 182, 255, 0.35);
  --ok: #5fd3a0;
  --warn: #ffbe5c;
  --stop: #ff7a7a;
  --radius: 14px;
  --radius-sm: 9px;
  --max: 1120px;
  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Inter", "Segoe UI", system-ui, sans-serif;
  --display: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Inter", "Segoe UI", system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: dark;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 17px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: var(--accent-2);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: #fff;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

code,
.mono {
  font-family: var(--mono);
  font-size: 0.88em;
}

.wrap {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

.skip {
  position: absolute;
  left: -9999px;
}

.skip:focus {
  left: 16px;
  top: 12px;
  z-index: 100;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 8px 14px;
  border-radius: 8px;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(6, 8, 12, 0.82);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid var(--line);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
  font-weight: 650;
  letter-spacing: -0.01em;
}

.brand img {
  width: 30px;
  height: 30px;
  border-radius: 7px;
}

.brand span {
  color: var(--ink-3);
  font-weight: 500;
}

.nav {
  display: flex;
  gap: 22px;
  margin-left: auto;
  font-size: 15px;
}

.nav a {
  color: var(--ink-2);
  text-decoration: none;
}

.nav a:hover {
  color: var(--ink);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 20px;
  border-radius: 999px;
  border: 1px solid transparent;
  font: 600 16px/1 var(--sans);
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: 0 0 0 1px rgba(127, 211, 255, 0.4), 0 8px 30px -8px var(--accent-glow);
}

.btn-primary:hover {
  background: var(--accent-2);
  color: var(--accent-ink);
}

.btn-ghost {
  border-color: var(--line-strong);
  color: var(--ink);
}

.btn-ghost:hover {
  border-color: var(--ink-3);
  color: #fff;
}

.btn-small {
  min-height: 36px;
  padding: 0 16px;
  font-size: 14px;
}

/* Hero */

.hero {
  position: relative;
  overflow: hidden;
  padding: 88px 0 72px;
  border-bottom: 1px solid var(--line);
}

.hero::before {
  content: "";
  position: absolute;
  inset: -40% -10% auto auto;
  width: 900px;
  height: 900px;
  background: radial-gradient(closest-side, rgba(53, 182, 255, 0.16), transparent 70%);
  pointer-events: none;
}

.hero .wrap {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 56px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 20px;
  font: 600 13px/1 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-2);
}

.eyebrow::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
}

h1,
h2,
h3 {
  font-family: var(--display);
  letter-spacing: -0.022em;
  line-height: 1.1;
  margin: 0;
}

h1 {
  font-size: clamp(40px, 5.6vw, 64px);
  font-weight: 700;
  text-wrap: balance;
}

h2 {
  font-size: clamp(30px, 3.6vw, 42px);
  font-weight: 700;
  text-wrap: balance;
}

h3 {
  font-size: 19px;
  font-weight: 650;
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.lead {
  margin: 22px 0 0;
  max-width: 34em;
  font-size: 19px;
  line-height: 1.6;
  color: var(--ink-2);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.fine {
  margin: 22px 0 0;
  font-size: 14px;
  color: var(--ink-3);
  max-width: 36em;
}

.hero-figure {
  margin: 0;
  background: linear-gradient(180deg, var(--panel), var(--bg-raised));
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 28px 22px 18px;
  box-shadow: 0 40px 80px -40px rgba(0, 0, 0, 0.8);
}

.hero-figure figcaption {
  margin-top: 10px;
  text-align: center;
  font: 500 12px/1.4 var(--mono);
  color: var(--ink-3);
  letter-spacing: 0.02em;
}

.diagram {
  width: 100%;
  height: auto;
}

.diagram .wire {
  fill: none;
  stroke: var(--accent);
  stroke-width: 2.2;
  stroke-linecap: round;
}

.diagram .wire-glow {
  fill: none;
  stroke: var(--accent);
  stroke-width: 8;
  stroke-linecap: round;
  opacity: 0.16;
}

.diagram .shape {
  fill: var(--panel-2);
  stroke: var(--line-strong);
  stroke-width: 1.5;
}

.diagram .shape-accent {
  fill: var(--panel-2);
  stroke: var(--accent);
  stroke-width: 1.6;
}

.diagram .pin {
  fill: var(--accent);
}

.diagram .label {
  fill: var(--ink);
  font: 600 15px var(--sans);
}

.diagram .sublabel {
  fill: var(--ink-3);
  font: 500 12px var(--mono);
}

.diagram .screen {
  fill: #0a1622;
  stroke: var(--line-strong);
  stroke-width: 1.5;
}

.diagram .screen-line {
  stroke: var(--accent);
  stroke-width: 3;
  stroke-linecap: round;
  opacity: 0.85;
}

.diagram .screen-line-dim {
  stroke: var(--ink-3);
  stroke-width: 3;
  stroke-linecap: round;
  opacity: 0.45;
}

/* Fact strip */

.facts {
  border-bottom: 1px solid var(--line);
  background: var(--bg-raised);
}

.facts .wrap {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.fact {
  padding: 28px 20px 28px 0;
}

.fact + .fact {
  padding-left: 24px;
  border-left: 1px solid var(--line);
}

.fact b {
  display: block;
  font: 650 30px/1.1 var(--mono);
  letter-spacing: -0.02em;
  color: var(--ink);
}

.fact span {
  display: block;
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.45;
  color: var(--ink-3);
}

/* Sections */

.section {
  padding: 104px 0;
  border-bottom: 1px solid var(--line);
}

.section-head {
  max-width: 44em;
  margin-bottom: 52px;
}

.section-head p {
  margin: 18px 0 0;
  color: var(--ink-2);
  font-size: 18px;
}

.kicker {
  margin: 0 0 14px;
  font: 600 12px/1 var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-2);
}

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  counter-reset: step;
}

.steps li {
  position: relative;
  padding: 26px 22px 24px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  counter-increment: step;
}

.steps li::before {
  content: "0" counter(step);
  display: block;
  margin-bottom: 18px;
  font: 600 13px/1 var(--mono);
  color: var(--accent);
}

.steps p,
.card p {
  margin: 10px 0 0;
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--ink-2);
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.card {
  padding: 26px 24px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.card .tag {
  display: inline-block;
  margin-left: 6px;
  padding: 3px 8px;
  border-radius: 999px;
  border: 1px solid rgba(255, 190, 92, 0.45);
  color: var(--warn);
  font: 600 11px/1.2 var(--mono);
  letter-spacing: 0.04em;
  vertical-align: 3px;
}

.card .note {
  margin-top: 14px;
  font-size: 14px;
  color: var(--ink-3);
}

/* Safety */

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 56px;
  align-items: start;
}

.split .copy p {
  margin: 18px 0 0;
  color: var(--ink-2);
  font-size: 18px;
}

.callout {
  margin-top: 28px;
  padding: 16px 18px;
  border-left: 3px solid var(--warn);
  background: rgba(255, 190, 92, 0.07);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--ink);
  font-size: 16px;
}

.profile {
  margin: 0;
  background: #070b11;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  font: 400 14px/1.7 var(--mono);
}

.profile-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink-3);
  font-size: 12px;
}

.profile-head i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--line-strong);
}

.profile-body {
  padding: 18px 20px 22px;
}

.profile dl {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 2px 18px;
  margin: 0 0 18px;
}

.profile dt {
  color: var(--ink-3);
}

.profile dd {
  margin: 0;
  color: var(--ink);
}

.profile h4 {
  margin: 16px 0 6px;
  font: 600 12px/1 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.profile .allowed {
  color: var(--ok);
}

.profile .blocked {
  color: var(--stop);
}

.profile ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.profile li {
  display: grid;
  grid-template-columns: 3.4em minmax(0, 1fr);
  gap: 0 12px;
  padding: 3px 0;
}

.profile li .sid {
  color: var(--accent-2);
}

.profile li.off .sid {
  color: var(--ink-3);
}

.profile li .why {
  grid-column: 2;
  color: var(--ink-3);
  font-size: 12.5px;
}

.profile li.off span:not(.sid) {
  color: var(--ink-2);
  text-decoration: line-through;
  text-decoration-color: rgba(255, 122, 122, 0.6);
}

/* Requirements */

.reqs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 48px;
  margin: 0;
}

.req {
  display: grid;
  grid-template-columns: 9.5em minmax(0, 1fr);
  gap: 16px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
}

.req dt {
  font: 600 13px/1.6 var(--mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.req dd {
  margin: 0;
  color: var(--ink);
}

.req dd small {
  display: block;
  margin-top: 6px;
  color: var(--ink-3);
  font-size: 14.5px;
  line-height: 1.55;
}

/* Beta status */

.status {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.status .card h3 {
  display: flex;
  align-items: center;
  gap: 10px;
}

.dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  flex: none;
}

.dot-ok {
  background: var(--ok);
  box-shadow: 0 0 8px rgba(95, 211, 160, 0.6);
}

.dot-warn {
  background: var(--warn);
  box-shadow: 0 0 8px rgba(255, 190, 92, 0.5);
}

.dot-accent {
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
}

/* FAQ */

.faq {
  max-width: 820px;
}

.faq details {
  border-top: 1px solid var(--line);
}

.faq details:last-child {
  border-bottom: 1px solid var(--line);
}

.faq summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: 22px 0;
  cursor: pointer;
  list-style: none;
  font-weight: 600;
  font-size: 18px;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: "+";
  flex: none;
  font: 400 24px/1 var(--mono);
  color: var(--ink-3);
  transition: transform 0.2s ease;
}

.faq details[open] summary::after {
  transform: rotate(45deg);
}

.faq details p {
  margin: -6px 0 24px;
  max-width: 44em;
  color: var(--ink-2);
}

/* Signup */

.signup {
  background:
    radial-gradient(800px 400px at 15% 0%, rgba(53, 182, 255, 0.1), transparent 70%),
    var(--bg-raised);
}

.signup .split {
  align-items: start;
}

.form {
  display: grid;
  gap: 18px;
  padding: 28px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
}

.field {
  display: grid;
  gap: 8px;
}

.field label,
.field legend {
  font-size: 15px;
  font-weight: 600;
}

.field .hint {
  font-size: 13.5px;
  color: var(--ink-3);
}

input[type="email"],
select,
textarea {
  width: 100%;
  min-height: 46px;
  padding: 11px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line-strong);
  background: #080c12;
  color: var(--ink);
  font: 400 16px/1.4 var(--sans);
}

textarea {
  min-height: 96px;
  resize: vertical;
}

select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 40px;
  background-image: linear-gradient(45deg, transparent 50%, var(--ink-3) 50%), linear-gradient(135deg, var(--ink-3) 50%, transparent 50%);
  background-position: calc(100% - 20px) 50%, calc(100% - 15px) 50%;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(53, 182, 255, 0.2);
}

.row-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.check {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 15px;
  color: var(--ink-2);
}

.check input {
  width: 20px;
  height: 20px;
  margin: 2px 0 0;
  flex: none;
  accent-color: var(--accent);
}

.hp {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-status {
  min-height: 1.5em;
  margin: 0;
  font-size: 15px;
}

.form-status.ok {
  color: var(--ok);
}

.form-status.err {
  color: var(--stop);
}

.form .btn {
  justify-self: start;
}

.form .btn[disabled] {
  opacity: 0.6;
  cursor: progress;
}

/* Footer */

.site-footer {
  padding: 48px 0 64px;
  color: var(--ink-3);
  font-size: 14px;
}

.site-footer .wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px 48px;
}

.site-footer p {
  margin: 0;
  max-width: 52em;
}

.site-footer nav {
  display: flex;
  gap: 20px;
}

.site-footer a {
  color: var(--ink-2);
}

/* Plain pages */

.page {
  padding: 72px 0 96px;
}

.page .wrap {
  max-width: 760px;
}

.page h1 {
  font-size: clamp(34px, 4.6vw, 48px);
}

.page h2 {
  margin-top: 48px;
  font-size: 24px;
  letter-spacing: -0.015em;
}

.page p,
.page li {
  color: var(--ink-2);
}

.page ul {
  padding-left: 1.2em;
}

.page li + li {
  margin-top: 6px;
}

.page .meta {
  margin-top: 14px;
  color: var(--ink-3);
  font-size: 15px;
}

.page .form {
  margin-top: 20px;
  max-width: 520px;
}

.notice {
  text-align: center;
}

.notice .wrap {
  display: grid;
  justify-items: center;
}

.notice img {
  width: 88px;
  height: 88px;
  border-radius: 20px;
  margin-bottom: 28px;
}

.notice p {
  max-width: 34em;
}

/* Responsive */

@media (max-width: 980px) {
  .hero .wrap,
  .split {
    grid-template-columns: minmax(0, 1fr);
    gap: 44px;
  }

  .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid,
  .status {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .reqs {
    grid-template-columns: minmax(0, 1fr);
  }

  .nav {
    display: none;
  }

  .site-header .btn {
    margin-left: auto;
  }
}

@media (max-width: 680px) {
  body {
    font-size: 16px;
  }

  .wrap {
    padding: 0 16px;
  }

  .hero {
    padding: 56px 0 48px;
  }

  .lead {
    font-size: 17.5px;
  }

  .section {
    padding: 72px 0;
  }

  .facts .wrap {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .fact,
  .fact + .fact {
    padding: 22px 12px 22px 0;
    border-left: 0;
  }

  .fact:nth-child(even) {
    padding-left: 16px;
    border-left: 1px solid var(--line);
  }

  .fact:nth-child(n + 3) {
    border-top: 1px solid var(--line);
  }

  .fact b {
    font-size: 24px;
  }

  .steps,
  .grid,
  .status,
  .row-2 {
    grid-template-columns: minmax(0, 1fr);
  }

  .req {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }

  .form {
    padding: 20px;
  }

  .profile {
    font-size: 12.5px;
  }

  .profile-body {
    padding: 14px 14px 18px;
  }

  .site-footer .wrap {
    grid-template-columns: minmax(0, 1fr);
  }

  .brand span {
    display: none;
  }
}