:root {
  --font-fk-grotesk: 'FK Grotesk', sans-serif;
  --font-fk-grotesk-semimono: ui-monospace, SFMono-Regular, Menlo, monospace;

  --color-base-brand: #2973ff;
  --color-base-active: #5792ff;
  --color-base-valid: #39a699;
  --color-base-dark-pearl: #ffffff;
  --color-base-dark-white: #fafafa;
  --color-base-dark-gray: #33363a;
  --color-base-dark-dark: #222529;
  --color-base-dark-black: #15181a;
  --color-base-dark-error: #ff7792;
  --color-base-dark-yellow: #f0a224;

  --color-text-body: rgba(255, 255, 255, 0.95);
  --color-text-secondary: rgba(255, 255, 255, 0.7);
  --color-text-tertiary: rgba(255, 255, 255, 0.5);
  --color-text-brand: var(--color-base-brand);
  --color-text-interactive-valid: var(--color-base-valid);
  --color-text-button-primary: var(--color-base-dark-pearl);

  --color-bg-base: var(--color-base-dark-black);
  --color-bg-bloc: var(--color-base-dark-dark);
  --color-bg-primary: rgba(250, 250, 250, 0.1);
  --color-bg-secondary: rgba(250, 250, 250, 0.08);
  --color-bg-tertiary: rgba(250, 250, 250, 0.05);
  --color-bg-overlay: rgba(0, 0, 0, 0.3);
  --color-bg-valid: rgba(57, 166, 153, 0.08);
  --color-bg-interactive-hover: rgba(250, 250, 250, 0.13);
  --color-bg-interactive-selected: rgba(250, 250, 250, 0.1);
  --color-bg-button-default: var(--color-base-brand);
  --color-bg-button-hover: var(--color-base-active);

  --color-border-primary: rgba(250, 250, 250, 0.15);
  --color-border-interactive-selected: rgba(255, 255, 255, 0.25);
  --color-border-interactive-active: rgba(41, 115, 255, 0.65);

  --shadow-surface: 0 3px 4px rgba(0, 0, 0, 0.09);
  --shadow-float:
    0 1px 10px rgba(0, 0, 0, 0.04), 0 8px 12px rgba(6, 9, 11, 0.05), 0 4px 8px rgba(0, 0, 0, 0.07);
  --focus-ring: 0 0 0 3px rgba(87, 146, 255, 0.28);

  --radius-xl: 20px;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-pill: 999px;
  --container: 1060px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-fk-grotesk);
  background:
    radial-gradient(circle at top center, rgba(41, 115, 255, 0.08), transparent 28%),
    var(--color-bg-base);
  color: var(--color-text-body);
  -webkit-font-smoothing: antialiased;
}

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

button {
  font: inherit;
}

.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;
}

.container {
  width: min(var(--container), calc(100% - 40px));
  margin: 0 auto;
}

.typo-title-xl {
  font-family: var(--font-fk-grotesk);
  font-size: clamp(52px, 8vw, 72px);
  font-style: normal;
  font-weight: 300;
  line-height: 110%;
  color: var(--color-text-body);
}

.typo-title-l {
  font-family: var(--font-fk-grotesk);
  font-size: clamp(44px, 7vw, 60px);
  font-style: normal;
  font-weight: 300;
  line-height: 110%;
  color: var(--color-text-body);
}

.typo-title-m {
  font-family: var(--font-fk-grotesk);
  font-size: clamp(30px, 4vw, 48px);
  font-style: normal;
  font-weight: 300;
  line-height: 110%;
  color: var(--color-text-body);
}

.typo-title-s {
  font-family: var(--font-fk-grotesk);
  font-size: clamp(22px, 3vw, 38px);
  font-style: normal;
  font-weight: 400;
  line-height: 120%;
  color: var(--color-text-body);
}

.typo-title-xs {
  font-family: var(--font-fk-grotesk);
  font-size: 20px;
  font-style: normal;
  font-weight: 400;
  line-height: 120%;
  color: var(--color-text-body);
}

.typo-body-l {
  font-family: var(--font-fk-grotesk);
  font-size: 18px;
  font-style: normal;
  font-weight: 400;
  line-height: 160%;
  color: var(--color-text-body);
}

.typo-body-m {
  font-family: var(--font-fk-grotesk);
  font-size: 16px;
  font-style: normal;
  font-weight: 400;
  line-height: 160%;
  color: var(--color-text-body);
}

.typo-body-s {
  font-family: var(--font-fk-grotesk);
  font-size: 15px;
  font-style: normal;
  font-weight: 400;
  line-height: 160%;
  color: var(--color-text-body);
}

.typo-body-xs {
  font-family: var(--font-fk-grotesk);
  font-size: 13px;
  font-style: normal;
  font-weight: 400;
  line-height: 160%;
  color: var(--color-text-body);
}

.typo-body-2xs {
  font-family: var(--font-fk-grotesk);
  font-size: 12px;
  font-style: normal;
  font-weight: 400;
  line-height: 160%;
  color: var(--color-text-body);
}

.typo-label-s {
  font-family: var(--font-fk-grotesk-semimono);
  font-size: 11px;
  font-style: normal;
  font-weight: 500;
  line-height: 100%;
  letter-spacing: 0.44px;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
}

.page-shell {
  min-height: 100vh;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(21, 24, 26, 0.82);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.topbar-inner {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-fk-grotesk);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}

.nav-link {
  border-radius: var(--radius-pill);
  padding: 9px 13px;
  color: var(--color-text-secondary);
  font-size: 13px;
  font-weight: 600;
  transition:
    color 0.18s ease,
    background 0.18s ease;
}

.nav-link:hover {
  color: var(--color-text-body);
  background: rgba(255, 255, 255, 0.06);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 40px;
  padding: 0 16px;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  cursor: pointer;
  transition:
    background 0.18s ease,
    border-color 0.18s ease,
    transform 0.18s ease;
}

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

.button-primary {
  background: var(--color-bg-button-default);
  border-color: rgba(87, 146, 255, 0.38);
  color: var(--color-text-button-primary);
}

.button-primary:hover {
  background: var(--color-bg-button-hover);
}

.button-secondary {
  background: var(--color-bg-primary);
  border-color: var(--color-border-primary);
  color: var(--color-text-body);
}

.button-secondary:hover {
  background: var(--color-bg-interactive-hover);
}

.button:focus-visible,
.nav-link:focus-visible,
.tab-button:focus-visible,
.copy-button:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.button-icon {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.section {
  padding: 56px 0;
}

.hero {
  padding-top: 80px;
  text-align: center;
}

.hero-title {
  max-width: 11ch;
  margin: 0 auto;
}

.hero-highlight {
  color: var(--color-base-active);
}

.hero-copy {
  max-width: 48rem;
  margin: 18px auto 0;
  color: var(--color-text-secondary);
}

.section-head {
  max-width: 720px;
  margin: 0 auto 24px;
  text-align: center;
}

.section-copy {
  margin-top: 12px;
  color: var(--color-text-secondary);
}

.surface {
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-xl);
  background: var(--color-bg-bloc);
  box-shadow: var(--shadow-surface);
}

.setup-shell {
  overflow: hidden;
}

.tablist {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  padding: 10px;
  border-bottom: 1px solid var(--color-border-primary);
  background: var(--color-bg-tertiary);
}

.tab-button {
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  padding: 12px 14px;
  background: transparent;
  color: var(--color-text-secondary);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition:
    background 0.18s ease,
    border-color 0.18s ease,
    color 0.18s ease;
}

.tab-button[aria-selected='true'] {
  color: var(--color-text-body);
  border-color: var(--color-border-primary);
  background: var(--color-bg-primary);
}

.tabpanel {
  display: none;
  padding: 20px;
}

.tabpanel.is-active {
  display: block;
}

.setup-title {
  margin: 0;
}

.setup-description {
  margin: 8px 0 0;
  color: var(--color-text-secondary);
}

.prompt-wrap {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed rgba(255, 255, 255, 0.16);
}

.prompt-label {
  display: block;
  margin-bottom: 8px;
}

.prompt-input {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 52px;
  padding: 8px;
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.03);
}

.prompt-value {
  flex: 1;
  min-width: 0;
  padding: 0 4px;
  color: var(--color-text-body);
}

.copy-button {
  min-height: 36px;
  padding: 0 14px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(87, 146, 255, 0.38);
  background: var(--color-bg-button-default);
  color: var(--color-text-button-primary);
  cursor: pointer;
  transition:
    background 0.18s ease,
    border-color 0.18s ease;
}

.copy-button:hover {
  background: var(--color-bg-button-hover);
}

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

.card {
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-xl);
  background: var(--color-bg-bloc);
  box-shadow: var(--shadow-surface);
  padding: 18px;
}

.card-title {
  margin: 0;
}

.card-copy {
  margin-top: 6px;
  margin-bottom: 0;
  color: var(--color-text-secondary);
}

.step-pill {
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: var(--color-base-brand);
  color: var(--color-text-button-primary);
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 10px;
}

.flow {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.flow-card {
  min-width: 164px;
  max-width: 210px;
  min-height: 220px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  gap: 14px;
  text-align: center;
  padding: 20px 24px;
}

.flow-card .step-pill {
  margin-bottom: 0;
}

.flow-title {
  margin: 0;
}

.flow-copy {
  margin: 0;
  color: var(--color-text-secondary);
}

.flow-arrow {
  color: var(--color-text-tertiary);
  font-size: 20px;
  line-height: 1;
  align-self: center;
}

.pill-row {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 18px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 42px;
  padding: 0 14px;
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-pill);
  background: var(--color-bg-bloc);
  color: var(--color-text-body);
}

.status-check {
  color: #8ed0a4;
}

.monitor-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  max-width: 820px;
  margin: 0 auto;
}

.feature-kicker {
  display: inline-block;
  margin-bottom: 8px;
  color: var(--color-base-active);
}

.about-shell {
  max-width: 780px;
  margin: 0 auto;
  text-align: center;
}

.about-actions {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.footer {
  border-top: 1px solid var(--color-border-primary);
  padding: 20px 0 28px;
  margin-top: 12px;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  color: var(--color-text-tertiary);
}

.footer-links {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.footer-links a:hover {
  color: var(--color-text-body);
}

/* Client badges */
.clients-row {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.client-badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-pill);
  color: var(--color-text-secondary);
  background: var(--color-bg-tertiary);
}

/* 4-column client tabs */
.client-tablist {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

/* Skill toggle */
.skill-toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 20px;
  border-top: 1px solid var(--color-border-primary);
  background: var(--color-bg-tertiary);
}

.skill-toggle-label {
  color: var(--color-text-tertiary);
}

.skill-toggle-group {
  display: flex;
  gap: 4px;
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-pill);
  padding: 3px;
  background: var(--color-bg-secondary);
}

.skill-toggle-btn {
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  padding: 6px 14px;
  background: transparent;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition:
    background 0.18s ease,
    color 0.18s ease,
    border-color 0.18s ease;
}

.skill-toggle-btn.is-active {
  background: var(--color-bg-primary);
  color: var(--color-text-body);
  border-color: var(--color-border-primary);
}

.skill-toggle-btn:hover:not(.is-active) {
  color: var(--color-text-body);
}

/* Tools shell */
.tools-shell {
  overflow: hidden;
}

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

.table-wrap {
  overflow-x: auto;
}

.tools-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.tools-table th {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border-primary);
  color: var(--color-text-tertiary);
  background: var(--color-bg-tertiary);
}

.tools-table td {
  padding: 10px 16px;
  border-bottom: 1px solid rgba(250, 250, 250, 0.06);
  color: var(--color-text-secondary);
  vertical-align: top;
}

.tools-table tbody tr:last-child td {
  border-bottom: none;
}

.table-section-row td {
  border-bottom: 1px solid var(--color-border-primary);
}

.table-section-label {
  padding-top: 14px !important;
  padding-bottom: 8px !important;
  color: var(--color-base-active) !important;
}

/* Inline code */
.inline-code {
  font-family: var(--font-fk-grotesk-semimono);
  font-size: 0.9em;
  background: rgba(255, 255, 255, 0.08);
  padding: 2px 6px;
  border-radius: 4px;
}

/* Setup note */
.setup-note {
  margin-top: 8px;
  color: var(--color-text-tertiary);
}

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 340px;
  background: var(--color-bg-bloc);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-xl);
  padding: 16px 18px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
  z-index: 1000;
  opacity: 0;
  transform: translateY(16px);
  pointer-events: none;
  transition:
    opacity 0.25s ease,
    transform 0.25s ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.toast-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
}

.toast-title {
  font-weight: 600;
  color: var(--color-text-body);
}

.toast-close {
  background: none;
  border: none;
  color: var(--color-text-tertiary);
  font-size: 18px;
  cursor: pointer;
  padding: 0 2px;
  line-height: 1;
}

.toast-close:hover {
  color: var(--color-text-body);
}

.toast-body {
  margin: 0 0 14px;
  color: var(--color-text-secondary);
}

.toast-actions {
  display: flex;
  gap: 8px;
}

.toast-actions .button {
  flex: 1;
  justify-content: center;
  text-align: center;
}

.toast-actions .button-claude {
  background: #da7756;
  border-color: #da7756;
  color: #fff;
}

.toast-actions .button-claude:hover {
  background: #c5694b;
}

.toast-actions .button-codex {
  background: #fff;
  border-color: #fff;
  color: #000;
}

.toast-actions .button-codex:hover {
  background: #e5e5e5;
}

@media (max-width: 900px) {
  .steps-grid {
    grid-template-columns: 1fr;
  }

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

  .hero {
    padding-top: 60px;
  }

  .flow-arrow {
    display: none;
  }

  .flow-card {
    max-width: none;
    width: 100%;
  }

  .prompt-input {
    flex-direction: column;
    align-items: stretch;
  }

  .skill-toggle-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}