:root {
  color-scheme: dark;
  --bg: #07100f;
  --surface: rgba(15, 28, 26, 0.82);
  --surface-strong: #12231f;
  --surface-soft: rgba(255, 255, 255, 0.045);
  --line: rgba(197, 241, 222, 0.13);
  --line-strong: rgba(197, 241, 222, 0.24);
  --text: #edf8f3;
  --muted: #9eb5ab;
  --accent: #67e3ad;
  --accent-soft: rgba(103, 227, 173, 0.13);
  --cyan: #73d8e8;
  --warning: #f4cf7b;
  --danger: #ff9d93;
  --shadow: 0 24px 72px rgba(0, 0, 0, 0.32);
  --radius-xl: 24px;
  --radius-lg: 18px;
  --radius-md: 13px;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--bg);
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 14% 0%, rgba(64, 188, 137, 0.17), transparent 28rem),
    radial-gradient(circle at 96% 8%, rgba(70, 153, 164, 0.12), transparent 25rem),
    linear-gradient(180deg, #0a1513 0%, var(--bg) 34rem);
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  content: "";
  opacity: 0.23;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, black, transparent 72%);
}

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

button,
textarea {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
a:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.shell {
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(7, 16, 15, 0.78);
  backdrop-filter: blur(18px);
}

.nav {
  min-height: 64px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex: 0 0 auto;
  font-weight: 760;
  letter-spacing: -0.02em;
}

.brand-mark {
  width: 31px;
  height: 31px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(103, 227, 173, 0.45);
  border-radius: 10px;
  color: var(--accent);
  background: var(--accent-soft);
  box-shadow: inset 0 0 16px rgba(103, 227, 173, 0.08);
  font: 800 12px/1 var(--mono);
}

.brand small {
  color: var(--muted);
  font: 500 11px/1 var(--mono);
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.nav-links {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links a {
  padding: 8px 11px;
  border-radius: 9px;
  color: var(--muted);
  font-size: 13px;
  transition: color 160ms ease, background 160ms ease;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--text);
  background: var(--surface-soft);
}

.page-main {
  padding: 54px 0 72px;
}

.hero {
  padding: 46px 0 32px;
}

.eyebrow,
.badge,
.status-pill {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--accent);
  background: var(--accent-soft);
  font: 700 11px/1 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.eyebrow {
  gap: 8px;
  padding: 8px 11px;
}

.eyebrow::before {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 9px currentColor;
  content: "";
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 820px;
  margin: 22px 0 18px;
  font-size: clamp(40px, 7vw, 76px);
  line-height: 0.98;
  letter-spacing: -0.058em;
}

.app-hero h1 {
  font-size: clamp(38px, 6vw, 66px);
}

.hero-copy {
  max-width: 690px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: clamp(16px, 2vw, 19px);
  line-height: 1.72;
}

.hero-copy strong {
  color: var(--text);
  font-weight: 650;
}

.notice {
  margin-top: 28px;
  padding: 13px 15px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  width: fit-content;
  max-width: 100%;
  border: 1px solid rgba(244, 207, 123, 0.24);
  border-radius: 12px;
  color: #e9dcb9;
  background: rgba(244, 207, 123, 0.075);
  font-size: 13px;
  line-height: 1.55;
}

.notice::before {
  flex: 0 0 auto;
  color: var(--warning);
  content: "◇";
}

.flow-strip {
  margin: 30px 0 50px;
  padding: 14px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(12, 25, 22, 0.66);
}

.flow-step {
  position: relative;
  padding: 13px 14px;
  border-radius: 11px;
  background: var(--surface-soft);
}

.flow-step:not(:last-child)::after {
  position: absolute;
  top: 50%;
  right: -8px;
  z-index: 2;
  width: 16px;
  height: 16px;
  display: grid;
  place-items: center;
  color: var(--muted);
  background: #0c1916;
  content: "→";
  transform: translateY(-50%);
  font-family: var(--mono);
}

.flow-step small,
.card small,
.section-kicker {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font: 700 10px/1.3 var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.flow-step b {
  font-size: 13px;
  font-weight: 600;
}

.section-heading {
  margin-bottom: 19px;
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
}

.section-heading h2 {
  margin-bottom: 0;
  font-size: clamp(24px, 4vw, 34px);
  letter-spacing: -0.035em;
}

.section-heading p {
  max-width: 460px;
  margin-bottom: 2px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
  text-align: right;
}

.app-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.app-card {
  position: relative;
  min-height: 240px;
  padding: 23px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.055), transparent 55%),
    var(--surface);
  box-shadow: var(--shadow);
  transition: transform 180ms ease, border-color 180ms ease;
}

.app-card::after {
  position: absolute;
  right: -56px;
  bottom: -70px;
  width: 190px;
  height: 190px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--card-glow, rgba(103, 227, 173, 0.16)), transparent 68%);
  content: "";
  pointer-events: none;
}

.app-card:hover {
  border-color: var(--line-strong);
  transform: translateY(-3px);
}

.app-card.weather { --card-glow: rgba(91, 203, 233, 0.2); }
.app-card.calculator { --card-glow: rgba(103, 227, 173, 0.2); }
.app-card.clock { --card-glow: rgba(190, 139, 255, 0.2); }
.app-card.parcel { --card-glow: rgba(244, 207, 123, 0.2); }

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

.app-icon {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 13px;
  color: var(--accent);
  background: var(--surface-soft);
  font: 700 14px/1 var(--mono);
}

.badge {
  padding: 6px 8px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.035);
  letter-spacing: 0.04em;
  text-transform: none;
}

.badge.virtual {
  color: var(--warning);
  border-color: rgba(244, 207, 123, 0.2);
  background: rgba(244, 207, 123, 0.07);
}

.app-card h3 {
  margin: 23px 0 8px;
  font-size: 24px;
  letter-spacing: -0.035em;
}

.app-card p {
  margin-bottom: 24px;
  color: var(--muted);
  line-height: 1.6;
}

.card-endpoint {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.card-endpoint code,
.inline-code {
  min-width: 0;
  overflow: hidden;
  color: #bdd2c9;
  font: 11px/1.5 var(--mono);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.arrow-link {
  flex: 0 0 auto;
  color: var(--accent);
  font-size: 13px;
  font-weight: 650;
}

.contract {
  margin-top: 46px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--surface);
}

.contract-grid {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 28px;
  align-items: start;
}

.contract h2 {
  margin-bottom: 10px;
  font-size: 24px;
  letter-spacing: -0.03em;
}

.contract p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}

pre {
  margin: 0;
  overflow: auto;
  font: 12px/1.65 var(--mono);
  tab-size: 2;
  white-space: pre-wrap;
  word-break: break-word;
}

.code-card {
  position: relative;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  color: #cfe1d9;
  background: #07110f;
}

.app-breadcrumb {
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font: 12px/1 var(--mono);
}

.app-breadcrumb a:hover {
  color: var(--accent);
}

.app-title-row {
  display: flex;
  align-items: center;
  gap: 17px;
}

.app-title-row .app-icon {
  width: 58px;
  height: 58px;
  border-radius: 17px;
  font-size: 17px;
}

.app-title-row h1 {
  margin: 0;
}

.app-tags {
  margin-top: 19px;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.lab-grid {
  margin-top: 26px;
  display: grid;
  grid-template-columns: minmax(0, 0.96fr) minmax(0, 1.04fr);
  gap: 14px;
  align-items: stretch;
}

.panel {
  min-width: 0;
  padding: 21px;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.panel-head {
  margin-bottom: 17px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.panel-head h2 {
  margin: 0;
  font-size: 17px;
  letter-spacing: -0.02em;
}

.endpoint-label {
  max-width: 62%;
  color: var(--muted);
  font: 10px/1.4 var(--mono);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.instruction-label {
  margin-bottom: 8px;
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 12px;
}

.instruction-label code {
  font: 10px/1 var(--mono);
}

.instruction-input {
  width: 100%;
  min-height: 136px;
  padding: 14px 15px;
  resize: vertical;
  border: 1px solid var(--line-strong);
  border-radius: 13px;
  outline: none;
  color: var(--text);
  background: rgba(4, 11, 10, 0.72);
  line-height: 1.62;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.instruction-input:focus {
  border-color: rgba(103, 227, 173, 0.58);
  box-shadow: 0 0 0 3px rgba(103, 227, 173, 0.09);
}

.instruction-input::placeholder {
  color: #678078;
}

.examples {
  margin-top: 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.chip,
.secondary-button,
.copy-button {
  border: 1px solid var(--line);
  color: var(--muted);
  background: var(--surface-soft);
  cursor: pointer;
  transition: color 150ms ease, border-color 150ms ease, background 150ms ease;
}

.chip {
  padding: 7px 9px;
  border-radius: 999px;
  font-size: 11px;
}

.chip:hover,
.secondary-button:hover,
.copy-button:hover {
  border-color: var(--line-strong);
  color: var(--text);
  background: rgba(255, 255, 255, 0.075);
}

.submit-row {
  margin-top: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.primary-button {
  min-height: 42px;
  padding: 0 18px;
  border: 0;
  border-radius: 11px;
  color: #052117;
  background: var(--accent);
  box-shadow: 0 8px 22px rgba(103, 227, 173, 0.17);
  cursor: pointer;
  font-weight: 750;
  transition: transform 150ms ease, opacity 150ms ease;
}

.primary-button:hover {
  transform: translateY(-1px);
}

.primary-button:disabled {
  opacity: 0.55;
  cursor: wait;
  transform: none;
}

.shortcut {
  color: var(--muted);
  font: 10px/1.4 var(--mono);
  text-align: right;
}

.result-panel {
  display: flex;
  flex-direction: column;
}

.status-pill {
  gap: 6px;
  padding: 6px 8px;
  color: var(--muted);
  background: var(--surface-soft);
  letter-spacing: 0;
  text-transform: none;
}

.status-pill::before {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  content: "";
}

.status-pill.running {
  color: var(--cyan);
}

.status-pill.success {
  color: var(--accent);
}

.status-pill.error {
  color: var(--danger);
}

.result-content {
  min-height: 238px;
  padding: 18px;
  flex: 1;
  border: 1px solid var(--line);
  border-radius: 14px;
  color: #dbece5;
  background:
    linear-gradient(180deg, rgba(103, 227, 173, 0.045), transparent 70%),
    rgba(4, 11, 10, 0.68);
  font-size: 15px;
  line-height: 1.75;
  white-space: pre-wrap;
}

.result-content.empty {
  display: grid;
  place-items: center;
  color: #6f887f;
  text-align: center;
}

.result-meta {
  min-height: 18px;
  margin-top: 10px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  font: 10px/1.5 var(--mono);
}

.protocol-grid {
  margin-top: 14px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.protocol-card {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: rgba(12, 24, 22, 0.7);
}

.protocol-card.wide {
  grid-column: 1 / -1;
}

.protocol-card summary {
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  list-style: none;
  cursor: pointer;
  color: var(--text);
  font-size: 13px;
  font-weight: 650;
}

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

.protocol-card summary::after {
  color: var(--muted);
  content: "+";
  font: 16px/1 var(--mono);
}

.protocol-card[open] summary::after {
  content: "−";
}

.protocol-card .code-wrap {
  position: relative;
  border-top: 1px solid var(--line);
}

.protocol-card pre {
  min-height: 190px;
  max-height: 360px;
  padding: 17px;
  color: #bcd1c8;
  background: rgba(3, 9, 8, 0.72);
}

.copy-button {
  position: absolute;
  top: 9px;
  right: 9px;
  z-index: 2;
  padding: 6px 8px;
  border-radius: 8px;
  font: 10px/1 var(--mono);
}

.how-it-works {
  margin-top: 44px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.info-card {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.025);
}

.info-card b {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
}

.info-card p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

.footer {
  padding: 24px 0 34px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 11px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

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

@media (max-width: 880px) {
  .nav {
    min-height: 58px;
  }

  .nav-links {
    max-width: 64vw;
    overflow-x: auto;
    scrollbar-width: none;
  }

  .nav-links::-webkit-scrollbar {
    display: none;
  }

  .lab-grid,
  .contract-grid {
    grid-template-columns: 1fr;
  }

  .result-content {
    min-height: 180px;
  }
}

@media (max-width: 680px) {
  .shell {
    width: min(100% - 24px, 1180px);
  }

  .brand small {
    display: none;
  }

  .nav {
    gap: 10px;
  }

  .nav-links {
    gap: 1px;
  }

  .nav-links a {
    padding: 7px 8px;
    font-size: 11px;
  }

  .page-main {
    padding: 28px 0 52px;
  }

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

  h1 {
    margin-top: 17px;
  }

  .flow-strip {
    grid-template-columns: 1fr 1fr;
    margin-bottom: 36px;
  }

  .flow-step:nth-child(2)::after {
    display: none;
  }

  .app-grid,
  .protocol-grid,
  .how-it-works {
    grid-template-columns: 1fr;
  }

  .app-card {
    min-height: 220px;
  }

  .section-heading {
    align-items: start;
    flex-direction: column;
  }

  .section-heading p {
    text-align: left;
  }

  .app-title-row {
    align-items: flex-start;
  }

  .app-title-row .app-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
  }

  .panel {
    padding: 16px;
  }

  .endpoint-label {
    display: none;
  }

  .protocol-card.wide {
    grid-column: auto;
  }

  .footer-inner {
    flex-direction: column;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}