/* PassTunnel website. Plain CSS, no build step. Design tokens first; see docs/WEBSITE.md. */

/* ---------- Tokens ---------- */

:root {
  --bg: #ffffff;
  --bg-soft: #f6f6f5;
  --card: #ffffff;
  --chip: #f0f0ee;
  --fg: #0a0a0a;
  --fg-2: #454545;
  --fg-3: #6a6a6a;
  --line: #e8e8e6;
  --line-strong: #d4d4d1;
  --btn-bg: #0a0a0a;
  --btn-fg: #ffffff;
  --btn-hover: #2b2b2b;
  --code-bg: #0c0c0d;
  --code-fg: #ededeb;
  --code-dim: #9a9a98;
  --code-line: #242426;
  --code-hover: rgba(255, 255, 255, 0.1);
  --live: #12a46b;
  --live-text: #0b7a4b;
  --warn: #d97706;
  --warn-text: #9a4a00;
  --ph-bg: #e6f4ec;
  --ph-line: #c4e5d2;
  --orb-a: rgba(52, 211, 153, 0.42);
  --orb-b: rgba(56, 189, 248, 0.36);
  --orb-c: rgba(129, 140, 248, 0.32);
  --nav-bg: rgba(255, 255, 255, 0.8);
  --menu-bg: #ffffff;
  --focus: #2563eb;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.04), 0 28px 56px -32px rgba(0, 0, 0, 0.22);
  --shot-shadow: 0 0 0 1px rgba(0, 0, 0, 0.08), 0 24px 48px -28px rgba(0, 0, 0, 0.32);

  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", system-ui, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  --gutter: clamp(16px, 4vw, 40px);
  --section-gap: clamp(88px, 10vw, 144px);
  --radius-lg: 32px;
  --radius: 24px;
  --radius-sm: 16px;

  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg: #000000;
  --bg-soft: #0a0a0a;
  --card: #0d0d0d;
  --chip: #1a1a1a;
  --fg: #f4f4f2;
  --fg-2: #b6b6b3;
  --fg-3: #8e8e8b;
  --line: #1f1f1f;
  --line-strong: #333333;
  --btn-bg: #f4f4f2;
  --btn-fg: #0a0a0a;
  --btn-hover: #d6d6d3;
  --code-bg: #0d0d0e;
  --code-fg: #ededeb;
  --code-dim: #8e8e8b;
  --code-line: #26262a;
  --live: #34d399;
  --live-text: #4ade80;
  --warn: #fbbf24;
  --warn-text: #fbbf24;
  --ph-bg: #0f2a1d;
  --ph-line: #1d4732;
  --orb-a: rgba(16, 185, 129, 0.34);
  --orb-b: rgba(14, 165, 233, 0.28);
  --orb-c: rgba(99, 102, 241, 0.3);
  --nav-bg: rgba(0, 0, 0, 0.72);
  --menu-bg: #0d0d0d;
  --focus: #60a5fa;
  --shadow: 0 0 0 1px rgba(255, 255, 255, 0.02), 0 28px 56px -32px rgba(0, 0, 0, 0.9);
  --shot-shadow: 0 0 0 1px rgba(255, 255, 255, 0.1), 0 24px 48px -28px rgba(0, 0, 0, 0.9);
  color-scheme: dark;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #000000;
    --bg-soft: #0a0a0a;
    --card: #0d0d0d;
    --chip: #1a1a1a;
    --fg: #f4f4f2;
    --fg-2: #b6b6b3;
    --fg-3: #8e8e8b;
    --line: #1f1f1f;
    --line-strong: #333333;
    --btn-bg: #f4f4f2;
    --btn-fg: #0a0a0a;
    --btn-hover: #d6d6d3;
    --code-bg: #0d0d0e;
    --code-fg: #ededeb;
    --code-dim: #8e8e8b;
    --code-line: #26262a;
    --live: #34d399;
    --live-text: #4ade80;
    --warn: #fbbf24;
    --warn-text: #fbbf24;
    --ph-bg: #0f2a1d;
    --ph-line: #1d4732;
    --orb-a: rgba(16, 185, 129, 0.34);
    --orb-b: rgba(14, 165, 233, 0.28);
    --orb-c: rgba(99, 102, 241, 0.3);
    --nav-bg: rgba(0, 0, 0, 0.72);
    --menu-bg: #0d0d0d;
    --focus: #60a5fa;
    --shadow: 0 0 0 1px rgba(255, 255, 255, 0.02), 0 28px 56px -32px rgba(0, 0, 0, 0.9);
    --shot-shadow: 0 0 0 1px rgba(255, 255, 255, 0.1), 0 24px 48px -28px rgba(0, 0, 0, 0.9);
    color-scheme: dark;
  }
}

/* ---------- Base ---------- */

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

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

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1,
h2,
h3,
p,
figure,
ul,
ol,
dl,
dd {
  margin: 0;
}

ul,
ol {
  padding: 0;
  list-style: none;
}

a {
  color: inherit;
  text-decoration: none;
}

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

svg {
  display: block;
}

button {
  font: inherit;
  color: inherit;
}

code,
kbd,
.mono {
  font-family: var(--mono);
}

code {
  font-size: 0.92em;
}

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

section[id],
article[id] {
  scroll-margin-top: 80px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -100px;
  z-index: 50;
  padding: 12px 18px;
  border-radius: 999px;
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-weight: 500;
}

.skip-link:focus {
  top: 10px;
}

/* Icons: 24-unit outline glyphs, colored by currentColor. */
.icon {
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.icon-bold {
  stroke-width: 1.8;
}

.icon-fill {
  fill: currentColor;
  stroke: none;
}

/* Light/dark image pairs: only the one for the current theme is displayed (and, being lazy, loaded). */
.only-dark {
  display: none;
}

:root[data-theme="dark"] .only-light {
  display: none;
}

:root[data-theme="dark"] .only-dark {
  display: block;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .only-light {
    display: none;
  }

  :root:not([data-theme="light"]) .only-dark {
    display: block;
  }
}

/* ---------- Layout ---------- */

.section {
  padding: var(--section-gap) var(--gutter) 0;
}

.wrap {
  max-width: 1200px;
  margin: 0 auto;
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px 64px;
  margin-bottom: clamp(32px, 4vw, 56px);
}

.section-head > div {
  flex: 1 1 520px;
  min-width: 0;
  max-width: 700px;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 500;
  color: var(--fg-2);
}

.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--fg);
}

.h2 {
  margin-top: 16px;
  font-size: clamp(34px, 4.2vw, 58px);
  line-height: 1.04;
  letter-spacing: -0.04em;
  font-weight: 500;
  text-wrap: balance;
}

.lead {
  flex: 1 1 360px;
  min-width: 0;
  max-width: 440px;
  font-size: 17px;
  line-height: 1.6;
  color: var(--fg-2);
  text-wrap: pretty;
}

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

@media (min-width: 640px) {
  .grid-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1100px) {
  .grid-cards {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.split {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.split > * {
  min-width: 0;
}

.split + .grid-cards,
.mb-card + .split,
.flow-card + .split {
  margin-top: 16px;
}

/* ---------- Cards ---------- */

.card {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
}

.card-soft {
  background: var(--bg-soft);
}

.card-lg {
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding: clamp(24px, 3vw, 36px);
}

.card-icon {
  width: 40px;
  height: 40px;
  margin-bottom: 20px;
  border-radius: 12px;
  background: var(--chip);
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-soft .card-icon {
  background: var(--card);
  border: 1px solid var(--line);
}

.card h3 {
  font-size: 18px;
  line-height: 1.3;
  font-weight: 600;
  letter-spacing: -0.015em;
}

.card h3 + p {
  margin-top: 8px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--fg-2);
}

.card-lg h3 {
  font-size: 21px;
  letter-spacing: -0.02em;
}

.card-lg h3 + p {
  font-size: 15.5px;
}

.card p code,
.lead code,
.faq-body code {
  color: var(--fg);
}

kbd {
  padding: 1px 7px;
  border: 1px solid var(--line-strong);
  border-bottom-width: 2px;
  border-radius: 7px;
  background: var(--bg-soft);
  font-size: 13px;
  color: var(--fg);
  white-space: nowrap;
}

/* Screenshot in its own soft card. */
.figure-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: clamp(16px, 2.4vw, 32px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-soft);
}

.figure-card figcaption {
  align-self: stretch;
  text-align: center;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--fg-2);
}

.shot {
  border-radius: 12px;
  box-shadow: var(--shot-shadow);
}

.shot-window {
  border-radius: 14px;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 14.5px;
  font-weight: 500;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.btn-primary {
  background: var(--btn-bg);
  color: var(--btn-fg);
}

.btn-primary:hover {
  background: var(--btn-hover);
}

.btn-ghost {
  border-color: var(--line-strong);
  background: var(--bg);
  color: var(--fg);
}

.btn-ghost:hover {
  background: var(--chip);
}

.btn-lg {
  height: 56px;
  padding: 0 28px;
  font-size: 16px;
}

.btn-md {
  height: 52px;
  padding: 0 24px;
  font-size: 15.5px;
}

.icon-btn {
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--fg);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.icon-btn:hover {
  background: var(--chip);
}

.text-link {
  text-decoration: underline;
  text-decoration-color: var(--line-strong);
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
  transition: text-decoration-color 0.15s ease;
}

.text-link:hover {
  text-decoration-color: currentColor;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--bg);
  color: var(--fg);
  font-size: 14.5px;
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.chip:hover {
  border-color: var(--fg-3);
}

.chip[aria-pressed="true"] {
  background: var(--fg);
  border-color: var(--fg);
  color: var(--bg);
}

/* Copy buttons: on light surfaces and inside dark code blocks. */
.copy {
  flex: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 44px;
  padding: 0 16px;
  border: 0;
  border-radius: 999px;
  background: var(--chip);
  color: var(--fg);
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.copy:hover {
  background: var(--line);
}

.copy-dark {
  border-radius: 12px;
  background: transparent;
  color: var(--code-fg);
  padding: 0 14px;
}

.copy-dark:hover {
  background: var(--code-hover);
}

/* ---------- Code blocks ---------- */

.code {
  border-radius: var(--radius-sm);
  background: var(--code-bg);
  border: 1px solid var(--code-line);
  color: var(--code-fg);
  overflow: hidden;
}

.code-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 4px 4px 4px 18px;
  border-bottom: 1px solid var(--code-line);
  font-size: 12.5px;
  color: var(--code-dim);
}

.code pre {
  margin: 0;
  padding: 16px 20px 20px;
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.85;
  overflow-x: auto;
}

.code pre:focus-visible {
  outline-offset: -3px;
}

.prompt {
  color: var(--code-dim);
  user-select: none;
}

.code-line {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  padding: 4px 4px 4px 18px;
  border-radius: var(--radius-sm);
  background: var(--code-bg);
  border: 1px solid var(--code-line);
  color: var(--code-fg);
}

.code-line code {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 14px;
  white-space: nowrap;
}

/* Horizontal scrollers with a fade on the cut edge (classes set by main.js). */
.scroller {
  overflow-x: auto;
  scrollbar-width: none;
  white-space: nowrap;
}

.scroller::-webkit-scrollbar {
  display: none;
}

.scroller.fade-end {
  -webkit-mask-image: linear-gradient(to right, #000 calc(100% - 40px), transparent);
  mask-image: linear-gradient(to right, #000 calc(100% - 40px), transparent);
}

.scroller.fade-start {
  -webkit-mask-image: linear-gradient(to right, transparent, #000 40px);
  mask-image: linear-gradient(to right, transparent, #000 40px);
}

.scroller.fade-start.fade-end {
  -webkit-mask-image: linear-gradient(to right, transparent, #000 40px, #000 calc(100% - 40px), transparent);
  mask-image: linear-gradient(to right, transparent, #000 40px, #000 calc(100% - 40px), transparent);
}

.scroller:focus-visible {
  outline-offset: 2px;
  border-radius: 6px;
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--nav-bg);
  -webkit-backdrop-filter: saturate(1.6) blur(14px);
  backdrop-filter: saturate(1.6) blur(14px);
  border-bottom: 1px solid var(--line);
}

.nav {
  position: relative;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 var(--gutter);
  height: 64px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.01em;
  flex: none;
}

.brand img {
  width: 28px;
  height: 28px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: 8px;
}

.nav-link {
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 44px;
  padding: 0 12px;
  border-radius: 999px;
  font-size: 14.5px;
  color: var(--fg-2);
  transition: color 0.15s ease, background-color 0.15s ease;
}

.nav-link:hover {
  color: var(--fg);
  background: var(--chip);
}

.nav-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 6px;
}

.menu-only,
.menu-btn,
.theme-btn {
  display: none;
}

.js .theme-btn {
  display: inline-flex;
}

.menu-btn .icon-shut,
.menu-btn[aria-expanded="true"] .icon-open {
  display: none;
}

.menu-btn[aria-expanded="true"] .icon-shut {
  display: block;
}

/* Theme button: one glyph per state. */
.theme-btn .icon {
  display: none;
}

.theme-btn .icon-auto,
:root[data-theme="light"] .theme-btn .icon-light,
:root[data-theme="dark"] .theme-btn .icon-dark {
  display: block;
}

:root[data-theme="light"] .theme-btn .icon-auto,
:root[data-theme="dark"] .theme-btn .icon-auto {
  display: none;
}

@media (min-width: 900px) and (max-width: 1199.98px) {
  .nav {
    gap: 12px;
  }

  .nav-links {
    margin-left: 0;
  }

  .nav-links .nav-link {
    padding: 0 9px;
    font-size: 14px;
  }

  .nav-github {
    display: none;
  }
}

@media (max-width: 899.98px) {
  .nav-links {
    display: none;
  }

  .js .menu-btn {
    display: inline-flex;
  }

  .js .nav-links.is-open {
    position: absolute;
    top: calc(100% + 8px);
    right: var(--gutter);
    left: var(--gutter);
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    margin: 0;
    padding: 8px;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: var(--menu-bg);
    box-shadow: var(--shadow);
  }

  .nav-links.is-open .nav-link {
    min-height: 48px;
    padding: 0 16px;
    font-size: 16px;
    color: var(--fg);
  }

  .nav-links.is-open .menu-only {
    display: block;
  }

  .nav-github {
    display: none;
  }
}

/* ---------- Hero ---------- */

.hero {
  padding: clamp(56px, 8vw, 112px) var(--gutter) 0;
  text-align: center;
}

.hero-intro {
  max-width: 1180px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.pill-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 16px 7px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--bg);
  font-size: 13.5px;
  color: var(--fg-2);
}

.pill-eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--live);
}

.hero h1 {
  margin-top: 28px;
  max-width: 1120px;
  font-size: clamp(40px, 5.6vw, 80px);
  line-height: 1.02;
  letter-spacing: -0.045em;
  font-weight: 500;
  text-wrap: balance;
}

.hero-sub {
  margin-top: 28px;
  max-width: 640px;
  font-size: clamp(17px, 1.45vw, 20px);
  line-height: 1.55;
  color: var(--fg-2);
  text-wrap: pretty;
}

.hero-ctas {
  margin-top: 40px;
  max-width: 100%;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 12px;
}

.brew-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 56px;
  max-width: 100%;
  min-width: 0;
  padding: 0 6px 0 22px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--bg);
}

.brew-pill .scroller {
  min-width: 0;
  flex: 0 1 auto;
}

.brew-pill code {
  min-width: 0;
  font-size: 13.5px;
  color: var(--fg-2);
  line-height: 44px;
}

.brew-pill .prompt {
  color: var(--fg-3);
}

.brew-alt {
  display: none;
}

.hero-meta {
  margin-top: 20px;
  font-size: 14px;
  color: var(--fg-3);
}

@media (max-width: 639.98px) {
  .brew-pill {
    display: none;
  }

  .brew-alt {
    display: inline-flex;
  }

  .hero-ctas .btn {
    width: 100%;
    max-width: 340px;
  }
}

/* Glow behind the hero and the call to action. */
.glow-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--bg-soft);
  isolation: isolate;
}

.orb {
  position: absolute;
  z-index: -1;
  pointer-events: none;
  animation: drift 22s ease-in-out infinite alternate;
  will-change: transform;
}

.orb-hero {
  inset: -20% -10% -30% -10%;
  background:
    radial-gradient(36% 46% at 22% 50%, var(--orb-a), transparent 70%),
    radial-gradient(32% 40% at 56% 28%, var(--orb-b), transparent 70%),
    radial-gradient(40% 44% at 80% 72%, var(--orb-c), transparent 72%);
}

.orb-cta {
  inset: -30% -10%;
  background:
    radial-gradient(30% 50% at 32% 70%, var(--orb-a), transparent 70%),
    radial-gradient(28% 46% at 52% 40%, var(--orb-b), transparent 70%),
    radial-gradient(30% 50% at 70% 72%, var(--orb-c), transparent 72%);
}

@keyframes drift {
  from {
    transform: translate3d(-2%, 1.5%, 0) scale(1);
  }

  to {
    transform: translate3d(2.5%, -2%, 0) scale(1.07);
  }
}

.hero-stage {
  max-width: 1240px;
  margin: clamp(48px, 6vw, 80px) auto 0;
  padding: clamp(20px, 4vw, 56px);
  text-align: left;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  justify-items: center;
  align-items: center;
  gap: 32px;
}

.demo-col {
  width: 100%;
  max-width: 460px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.demo-caption {
  font-size: 13px;
  color: var(--fg-2);
  text-align: center;
}

.hero-shot {
  width: 100%;
  max-width: 640px;
}

@media (min-width: 980px) {
  .hero-grid {
    grid-template-columns: minmax(340px, 440px) minmax(0, 640px);
    justify-content: center;
    gap: clamp(32px, 4vw, 56px);
  }
}

@media (max-width: 479.98px) {
  .hero-stage {
    padding: 12px;
    border-radius: 28px;
  }

  .hero-grid {
    gap: 20px;
  }

  .hero-shot {
    margin-bottom: 4px;
  }
}

/* ---------- Live code demo ---------- */

.demo {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--card);
  box-shadow: var(--shadow);
}

.demo-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.demo-profile {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.demo-avatar {
  flex: none;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--chip);
  display: flex;
  align-items: center;
  justify-content: center;
}

.demo-dot {
  position: relative;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--fg-3);
  transition: background-color 0.3s ease;
}

.demo[data-phase="waiting"] .demo-dot,
.demo[data-phase="sending"] .demo-dot {
  background: var(--warn);
}

.demo[data-phase="connected"] .demo-dot {
  background: var(--live);
}

.demo[data-phase="connected"] .demo-dot::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: var(--live);
  animation: pulse 1.8s ease-out infinite;
}

@keyframes pulse {
  from {
    transform: scale(1);
    opacity: 0.5;
  }

  to {
    transform: scale(2.8);
    opacity: 0;
  }
}

.demo-profile > div {
  min-width: 0;
}

.demo-name {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.demo-host {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--fg-3);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.demo-state {
  flex: none;
  padding: 5px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--fg-2);
}

.demo[data-phase="waiting"] .demo-state,
.demo[data-phase="sending"] .demo-state {
  color: var(--warn-text);
}

.demo[data-phase="connected"] .demo-state {
  color: var(--live-text);
}

.demo-body {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.demo-label {
  margin-bottom: 8px;
  font-size: 12.5px;
  color: var(--fg-3);
}

.demo-code {
  display: flex;
  gap: 0.3em;
  font-family: var(--mono);
  font-size: clamp(38px, 5vw, 56px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.ring {
  position: relative;
  flex: none;
  width: 80px;
  height: 80px;
}

.ring svg {
  transform: rotate(-90deg);
}

.ring-track {
  fill: none;
  stroke: var(--line);
  stroke-width: 6;
}

.ring-progress {
  fill: none;
  stroke: var(--live);
  stroke-width: 6;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.2s linear, stroke 0.3s ease;
}

.ring.is-low .ring-progress {
  stroke: var(--warn);
}

.ring-text {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.ring-secs {
  font-size: 22px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.ring-unit {
  margin-top: 3px;
  font-size: 11px;
  color: var(--fg-3);
}

.demo-status {
  min-height: 3em;
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--fg-2);
}

.demo-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.demo-btn {
  height: 52px;
  border: 0;
  border-radius: 999px;
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-size: 16px;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  cursor: pointer;
  transition: background-color 0.15s ease, opacity 0.2s ease;
}

.demo-btn:hover {
  background: var(--btn-hover);
}

.demo-btn[aria-disabled="true"] {
  opacity: 0.72;
  cursor: default;
}

.demo-btn[aria-disabled="true"]:hover {
  background: var(--btn-bg);
}

.demo-sent {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  min-height: 44px;
  padding: 10px 16px;
  border-radius: 14px;
  background: var(--bg-soft);
  font-size: 13px;
}

.demo-sent-label {
  color: var(--fg-2);
}

.demo-sent-value {
  font-family: var(--mono);
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.demo-sent-value .mask {
  color: var(--fg-3);
}

@media (max-width: 479.98px) {
  .demo {
    gap: 20px;
    padding: 20px;
    border-radius: 22px;
  }

  .demo-host {
    white-space: normal;
  }

  .ring {
    width: 68px;
    height: 68px;
  }

  .ring svg {
    width: 68px;
    height: 68px;
  }

  .ring-secs {
    font-size: 19px;
  }
}

/* ---------- One-time codes ---------- */

.codes-main > article {
  flex: 1 1 520px;
}

.codes-main > figure {
  flex: 1 1 420px;
}

.fmt-preview {
  flex: 1 1 auto;
  margin-top: auto;
  min-height: 168px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 12px;
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--bg-soft);
}

.fmt-panel {
  width: 100%;
  max-width: 440px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  text-align: center;
}

.fmt-panel[hidden] {
  display: none;
}

.fmt-caption {
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--fg-3);
}

.fmt-value {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  font-family: var(--mono);
  font-size: clamp(24px, 2.8vw, 36px);
  letter-spacing: 0.04em;
  line-height: 1.2;
  overflow-wrap: anywhere;
}

.seg-pw {
  color: var(--fg-3);
}

.seg-sep {
  color: var(--live-text);
  font-weight: 700;
}

.seg-code {
  color: var(--fg);
  font-weight: 600;
}

.fmt-note {
  font-size: 14px;
  line-height: 1.5;
  color: var(--fg-2);
}

.fmt-rows {
  align-self: stretch;
  display: grid;
  gap: 10px;
  text-align: left;
}

.fmt-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px 16px;
}

.fmt-row + .fmt-row {
  padding-top: 10px;
  border-top: 1px solid var(--line);
}

.fmt-row-label {
  font-size: 14px;
  color: var(--fg-2);
}

.fmt-row-value {
  font-family: var(--mono);
  font-size: 22px;
  letter-spacing: 0.04em;
}

.fmt-row-value.is-small {
  font-size: 18px;
  letter-spacing: 0.02em;
}

.ph {
  display: inline-block;
  padding: 1px 7px;
  border: 1px solid var(--ph-line);
  border-radius: 8px;
  background: var(--ph-bg);
  color: var(--live-text);
  font-weight: 600;
  letter-spacing: 0;
}

.ph-lit {
  padding: 0 4px;
  color: var(--fg);
  font-weight: 700;
}

/* ---------- VPN client ---------- */

.mb-card {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: clamp(24px, 4vw, 56px);
  padding: clamp(24px, 4vw, 48px);
}

.mb-text {
  flex: 1 1 300px;
  min-width: 0;
  max-width: 400px;
}

.card .mb-text h3 {
  font-size: clamp(22px, 2.2vw, 28px);
  line-height: 1.2;
  letter-spacing: -0.025em;
}

.card .mb-text h3 + p {
  margin-top: 12px;
  font-size: 16px;
}

.mb-shot {
  flex: 1.2 1 300px;
  min-width: 0;
  display: flex;
  justify-content: center;
}

.mb-shot .shot {
  max-width: 100%;
  height: auto;
}









.stack {
  display: grid;
  grid-auto-rows: 1fr;
  gap: 16px;
}

@media (max-width: 639.98px) {
  .grid-cards > .card:not(.card-lg) {
    display: grid;
    grid-template-columns: 40px minmax(0, 1fr);
    column-gap: 18px;
    padding: 24px;
  }

  .grid-cards > .card:not(.card-lg) .card-icon {
    grid-row: 1 / span 2;
    margin-bottom: 0;
  }

  .grid-cards > .card:not(.card-lg) h3,
  .grid-cards > .card:not(.card-lg) h3 + p {
    grid-column: 2;
  }

  .card-row {
    padding: 24px;
    column-gap: 18px;
  }
}

.client-more > .stack {
  flex: 1 1 420px;
}

/* Icon beside the text; centered when the row is stretched next to a screenshot. */
.card-row {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  column-gap: 20px;
  align-content: center;
}

.card-row .card-icon {
  grid-row: 1 / span 2;
  margin-bottom: 0;
}

.card-row h3,
.card-row h3 + p {
  grid-column: 2;
}

.client-more > figure {
  flex: 0 1 464px;
}

.security-more > figure {
  flex: 1 1 380px;
}

@media (max-width: 899.98px) {
  .client-more > figure {
    flex: 1 1 100%;
  }
}

/* ---------- CLI & MCP ---------- */

.cli-grid > article {
  flex: 1 1 480px;
}

.cli-grid .code {
  margin-top: auto;
}

.checks {
  display: grid;
  gap: 12px;
}

.checks li {
  display: flex;
  gap: 12px;
  font-size: 15px;
  line-height: 1.5;
  color: var(--fg-2);
}

.checks code {
  color: var(--fg);
}

.checks .icon {
  margin-top: 2px;
  stroke: var(--live-text);
  stroke-width: 2;
}

.card-foot {
  margin-top: auto;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--fg-2);
}

.card-foot a,
.card-foot code {
  color: var(--fg);
}

/* ---------- Security ---------- */

.flow-card {
  padding: clamp(24px, 4vw, 48px);
}

.card .flow-title {
  margin-bottom: 40px;
  font-size: 15px;
  font-weight: 500;
  color: var(--fg-2);
}

.flow {
  display: flex;
  align-items: stretch;
}

.flow-node {
  flex: 1 1 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--card);
}

.flow-node img,
.flow-glyph {
  width: 32px;
  height: 32px;
}

.flow-glyph {
  border-radius: 8px;
  background: var(--chip);
  display: flex;
  align-items: center;
  justify-content: center;
}

.flow-name {
  font-size: 16px;
  font-weight: 600;
}

.flow-desc {
  font-size: 14px;
  line-height: 1.55;
  color: var(--fg-2);
}

.flow-link {
  flex: 0 0 104px;
  position: relative;
  align-self: center;
  height: 2px;
  background: var(--line-strong);
}

.flow-link::after {
  content: "";
  position: absolute;
  right: -2px;
  top: -5px;
  border-style: solid;
  border-width: 6px 0 6px 9px;
  border-color: transparent transparent transparent var(--line-strong);
}

.flow-label {
  position: absolute;
  left: 50%;
  bottom: 12px;
  transform: translateX(-50%);
  font-size: 12.5px;
  color: var(--fg-2);
  white-space: nowrap;
}

@media (max-width: 899.98px) {
  .flow {
    flex-direction: column;
  }

  .flow-node {
    flex: none;
  }

  .flow-link {
    flex: 0 0 64px;
    width: 2px;
    height: auto;
    align-self: center;
  }

  .flow-link::after {
    right: auto;
    top: auto;
    left: -5px;
    bottom: -2px;
    border-width: 9px 6px 0;
    border-color: var(--line-strong) transparent transparent;
  }

  .flow-label {
    left: 16px;
    bottom: auto;
    top: 50%;
    transform: translateY(-50%);
  }
}

.security-more > .stack {
  flex: 1 1 520px;
}

.card-link {
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.card-link:hover {
  border-color: var(--line-strong);
  background: var(--bg-soft);
}

.card-link-title {
  grid-column: 2;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 18px;
  line-height: 1.3;
  font-weight: 600;
  letter-spacing: -0.015em;
}

.card-link-title .icon {
  transition: transform 0.15s ease;
}

.card-link:hover .card-link-title .icon {
  transform: translateX(3px);
}

.card-link-desc {
  grid-column: 2;
  margin-top: 8px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--fg-2);
}

/* ---------- Install ---------- */

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

@media (min-width: 1060px) {
  .install-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.5fr) minmax(0, 1fr);
  }
}

.install-grid .card-lg {
  padding: clamp(24px, 3vw, 32px);
}

.install-grid .btn {
  margin-top: auto;
  align-self: flex-start;
}

.install-grid .code {
  margin-top: auto;
}

.install-grid pre {
  font-size: 13px;
  padding: 14px 18px 16px;
}

/* ---------- FAQ ---------- */

.faq {
  display: flex;
  flex-wrap: wrap;
  gap: 32px 64px;
}

.faq > div:first-child {
  flex: 1 1 280px;
  min-width: 0;
}

.faq-list {
  flex: 2.2 1 560px;
  min-width: 0;
  border-top: 1px solid var(--line);
}

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

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 44px;
  padding: 24px 0;
  cursor: pointer;
  list-style: none;
  font-size: 19px;
  line-height: 1.35;
  font-weight: 600;
  letter-spacing: -0.015em;
}

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

.faq-item summary:focus-visible {
  outline-offset: 4px;
  border-radius: 8px;
}

.faq-toggle {
  flex: none;
  width: 32px;
  height: 32px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--fg-2);
  transition: transform 0.2s ease;
}

.faq-item[open] .faq-toggle {
  transform: rotate(45deg);
}

.faq-body {
  max-width: 680px;
  padding: 0 56px 28px 0;
  font-size: 16px;
  line-height: 1.65;
  color: var(--fg-2);
}

/* ---------- Call to action ---------- */

.cta {
  padding: var(--section-gap) var(--gutter);
}

.cta-card {
  max-width: 1200px;
  margin: 0 auto;
  padding: clamp(56px, 8vw, 104px) clamp(20px, 4vw, 48px);
  text-align: center;
}

.cta-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.cta-icon {
  width: 72px;
  height: 72px;
  filter: drop-shadow(0 12px 20px rgba(0, 0, 0, 0.2));
}

.cta h2 {
  margin-top: 32px;
  max-width: 760px;
  font-size: clamp(34px, 4.6vw, 64px);
  line-height: 1.03;
  letter-spacing: -0.045em;
  font-weight: 500;
  text-wrap: balance;
}

.cta p {
  text-wrap: balance;
  margin-top: 20px;
  max-width: 520px;
  font-size: 17px;
  line-height: 1.6;
  color: var(--fg-2);
}

.cta-buttons {
  margin-top: 36px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

/* ---------- Footer ---------- */

.site-footer {
  padding: 48px var(--gutter) 56px;
  border-top: 1px solid var(--line);
}

.footer-top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px 32px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--fg-2);
}

.footer-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 8px;
}

.footer-nav .nav-link {
  padding: 0 12px;
}

.legal {
  margin-top: 40px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--fg-3);
}

/* ---------- Document pages (privacy policy) ---------- */

.doc {
  padding: clamp(56px, 8vw, 104px) var(--gutter) clamp(72px, 9vw, 128px);
}

.doc-inner {
  max-width: 720px;
  margin: 0 auto;
}

.doc h1 {
  margin-top: 16px;
  font-size: clamp(40px, 6vw, 64px);
  line-height: 1.04;
  letter-spacing: -0.04em;
  font-weight: 500;
}

.doc-lead {
  margin-top: 20px;
  font-size: clamp(17px, 2vw, 19px);
  line-height: 1.6;
  color: var(--fg-2);
  text-wrap: pretty;
}

.doc-date {
  margin-top: 16px;
  font-size: 14px;
  color: var(--fg-3);
}

.doc-summary {
  margin-top: 40px;
}

.doc .doc-summary-title {
  margin-bottom: 16px;
  font-size: 18px;
  line-height: 1.3;
  font-weight: 600;
  letter-spacing: -0.015em;
}

.doc section {
  margin-top: 56px;
}

.doc h2 {
  font-size: clamp(24px, 3vw, 30px);
  line-height: 1.2;
  letter-spacing: -0.025em;
  font-weight: 500;
  text-wrap: balance;
}

.doc h3 {
  margin-top: 28px;
  font-size: 17px;
  line-height: 1.4;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.doc section p,
.doc section ul {
  margin-top: 12px;
  font-size: 16px;
  line-height: 1.7;
  color: var(--fg-2);
  text-wrap: pretty;
}

.doc section li {
  position: relative;
  padding-left: 22px;
}

.doc section li + li {
  margin-top: 10px;
}

.doc section li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 0.72em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--fg-3);
}

.doc strong,
.doc em,
.doc code {
  color: var(--fg);
}

.doc strong {
  font-weight: 600;
}

.doc section code {
  overflow-wrap: anywhere;
}

.footer-nav .nav-link[aria-current="page"] {
  color: var(--fg);
}

/* ---------- 404 ---------- */

.notfound {
  min-height: calc(100vh - 65px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 64px var(--gutter);
  text-align: center;
}

.notfound .cta-inner p {
  margin-top: 16px;
  font-size: 17px;
  color: var(--fg-2);
}

.notfound h1 {
  margin-top: 28px;
  font-size: clamp(34px, 5vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.04em;
  font-weight: 500;
}

.notfound .btn {
  margin-top: 32px;
}

/* ---------- Reduced motion ---------- */

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

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}