/* ==========================================================================
   mainframe-mcp-server — "Operations Console" design system
   Dark-first enterprise theme · IBM Plex Sans / Plex Mono · dual theme
   ========================================================================== */

/* ---- Design tokens: dark (default) ------------------------------------ */
:root,
[data-theme="dark"] {
  color-scheme: dark;

  /* Surfaces */
  --bg: #05080f;
  --bg-soft: #080d18;
  --bg-card: #0b1120;
  --bg-card-hover: #0e1526;
  --bg-code: #070c16;
  --bg-chip: rgba(93, 135, 255, 0.08);
  --bg-inset: #060b14;

  /* Lines */
  --border: rgba(125, 153, 199, 0.16);
  --border-strong: rgba(125, 153, 199, 0.30);
  --hairline: rgba(125, 153, 199, 0.10);

  /* Ink */
  --text: #e9eef8;
  --text-soft: #c0cbdf;
  --text-muted: #8291ad;
  --text-faint: #5b6a86;

  /* Accent system */
  --accent: #5b8cff;
  --accent-strong: #7aa2ff;
  --accent-ink: #0b1120;
  --cyan: #38d3f5;
  --green: #3ddc97;
  --amber: #ffc857;
  --violet: #a78bfa;

  --accent-soft: rgba(91, 140, 255, 0.13);
  --cyan-soft: rgba(56, 211, 245, 0.12);
  --green-soft: rgba(61, 220, 151, 0.12);
  --amber-soft: rgba(255, 200, 87, 0.10);
  --violet-soft: rgba(167, 139, 250, 0.12);
  --red-soft: rgba(255, 107, 107, 0.12);
  --red: #ff6b6b;

  /* Gradients & glows */
  --grad-accent: linear-gradient(96deg, #5b8cff 0%, #38d3f5 100%);
  --grad-heading: linear-gradient(94deg, #ffffff 10%, #9db8ff 60%, #38d3f5 100%);
  --glow-accent: 0 0 0 1px rgba(91, 140, 255, 0.35), 0 8px 28px rgba(64, 116, 255, 0.22);
  --shadow-1: 0 1px 2px rgba(1, 4, 10, 0.5), 0 8px 24px rgba(1, 4, 10, 0.35);
  --shadow-2: 0 2px 6px rgba(1, 4, 10, 0.55), 0 18px 48px rgba(1, 4, 10, 0.5);

  /* Chrome */
  --header-bg: rgba(5, 8, 15, 0.78);
  --code-head-bg: rgba(91, 140, 255, 0.07);
  --scroll-thumb: rgba(125, 153, 199, 0.25);

  /* Type */
  --font-sans: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

/* ---- Design tokens: light ---------------------------------------------- */
[data-theme="light"] {
  color-scheme: light;

  --bg: #f5f7fb;
  --bg-soft: #eef1f7;
  --bg-card: #ffffff;
  --bg-card-hover: #ffffff;
  --bg-code: #0e1526;
  --bg-chip: rgba(47, 99, 242, 0.07);
  --bg-inset: #eef1f7;

  --border: rgba(23, 43, 77, 0.14);
  --border-strong: rgba(23, 43, 77, 0.26);
  --hairline: rgba(23, 43, 77, 0.08);

  --text: #101b33;
  --text-soft: #2b3a58;
  --text-muted: #55647f;
  --text-faint: #7d8aa3;

  --accent: #2f63f2;
  --accent-strong: #1f4fd6;
  --accent-ink: #ffffff;
  --cyan: #0e8fb8;
  --green: #0e9f6e;
  --amber: #b45309;
  --violet: #6d28d9;

  --accent-soft: rgba(47, 99, 242, 0.09);
  --cyan-soft: rgba(14, 143, 184, 0.10);
  --green-soft: rgba(14, 159, 110, 0.10);
  --amber-soft: rgba(180, 83, 9, 0.09);
  --violet-soft: rgba(109, 40, 217, 0.08);
  --red-soft: rgba(200, 30, 30, 0.08);
  --red: #c81e1e;

  --grad-accent: linear-gradient(96deg, #2f63f2 0%, #0e8fb8 100%);
  --grad-heading: linear-gradient(94deg, #101b33 20%, #2f63f2 75%, #0e8fb8 100%);
  --glow-accent: 0 0 0 1px rgba(47, 99, 242, 0.25), 0 10px 30px rgba(47, 99, 242, 0.16);
  --shadow-1: 0 1px 2px rgba(16, 27, 51, 0.06), 0 10px 28px rgba(16, 27, 51, 0.08);
  --shadow-2: 0 2px 8px rgba(16, 27, 51, 0.08), 0 24px 56px rgba(16, 27, 51, 0.14);

  --header-bg: rgba(245, 247, 251, 0.82);
  --code-head-bg: rgba(47, 99, 242, 0.08);
  --scroll-thumb: rgba(23, 43, 77, 0.25);
}

/* ---- Reset & base ------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection {
  background: var(--accent);
  color: #ffffff;
}

a {
  color: var(--accent-strong);
  text-decoration: none;
  transition: color 0.16s ease;
}

a:hover {
  color: var(--cyan);
}

code {
  font-family: var(--font-mono);
  font-size: 0.86em;
}

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

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

/* Scrollbars (WebKit) */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--scroll-thumb);
  border-radius: 8px;
  border: 2px solid transparent;
  background-clip: content-box;
}

/* Anchor offset for the sticky header (status strip 34px + bar 64px) */
section[id],
[id="top"] {
  scroll-margin-top: 112px;
}

/* Layout container */
main > section,
.hero-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

main > section {
  padding-top: 84px;
  padding-bottom: 40px;
  border-top: 1px solid var(--hairline);
}

main > section:first-of-type {
  border-top: 0;
}

/* ==========================================================================
   Header & navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--header-bg);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
  backdrop-filter: blur(14px) saturate(1.4);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.25s ease;
}

.site-header.scrolled {
  box-shadow: var(--shadow-1);
}

/* ---- System status strip ------------------------------------------------ */
.header-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
  height: 34px;
  border-bottom: 1px solid var(--hairline);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-faint);
}

.strip-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

.strip-status .pulse {
  position: relative;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  flex: 0 0 auto;
}

.strip-status .pulse::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: var(--green);
  animation: pulse-ring 2.2s ease-out infinite;
}

.strip-meta a {
  color: var(--text-muted);
  font-weight: 500;
}

.strip-meta a:hover {
  color: var(--accent-strong);
}

/* ---- Scroll progress hairline ------------------------------------------- */
.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  pointer-events: none;
}

.scroll-progress span {
  display: block;
  height: 100%;
  width: 0;
  background: var(--grad-accent);
  box-shadow: 0 0 10px rgba(91, 140, 255, 0.55);
}

.header-bar {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 20px;
  /* Keep the bar (and its menu toggle) above the mobile nav backdrop */
  position: relative;
  z-index: 56;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-right: auto;
  color: var(--text);
  font-weight: 600;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.logo:hover {
  color: var(--text);
}

.logo-mark {
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  filter: drop-shadow(0 3px 10px rgba(64, 116, 255, 0.45));
}

.logo-text {
  font-size: 0.98rem;
  letter-spacing: -0.01em;
}

.logo-accent {
  background: var(--grad-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  position: relative;
  display: inline-block;
  padding: 8px 12px;
  border-radius: 8px;
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.16s ease, background-color 0.16s ease;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 4px;
  height: 2px;
  border-radius: 2px;
  background: var(--grad-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
}

.nav-links a:hover {
  color: var(--text);
  background: var(--bg-chip);
}

.nav-links a:hover::after {
  transform: scaleX(1);
}

/* Current section (scroll spy) */
.nav-links a.active {
  color: var(--text);
  background: var(--bg-chip);
}

.nav-links a.active::after {
  transform: scaleX(1);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.theme-toggle {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: color 0.16s ease, border-color 0.16s ease, background-color 0.16s ease;
}

.theme-toggle:hover {
  color: var(--accent-strong);
  border-color: var(--border-strong);
  background: var(--bg-chip);
}

.theme-toggle .icon-sun {
  display: none;
}

.theme-toggle .icon-moon {
  display: block;
}

[data-theme="light"] .theme-toggle .icon-sun {
  display: block;
}

[data-theme="light"] .theme-toggle .icon-moon {
  display: none;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 38px;
  padding: 0 16px;
  border-radius: 10px;
  background: var(--grad-accent);
  color: #ffffff;
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  box-shadow: 0 4px 16px rgba(64, 116, 255, 0.32);
  transition: filter 0.16s ease, transform 0.16s ease;
}

.nav-cta:hover {
  color: #ffffff;
  filter: brightness(1.1);
  transform: translateY(-1px);
}

.nav-menu-toggle {
  display: none;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: transparent;
  color: var(--text);
  cursor: pointer;
}

.nav-menu-toggle .icon-close {
  display: none;
}

body.nav-open .nav-menu-toggle .icon-menu {
  display: none;
}

body.nav-open .nav-menu-toggle .icon-close {
  display: block;
}

.nav-backdrop {
  position: fixed;
  inset: 0;
  z-index: 50;
  background: rgba(2, 5, 12, 0.6);
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  overflow: hidden;
  padding: 88px 0 72px;
  border-bottom: 1px solid var(--hairline);
  background:
    radial-gradient(52rem 30rem at 85% -12%, var(--accent-soft), transparent 62%),
    radial-gradient(44rem 28rem at -8% 4%, var(--cyan-soft), transparent 60%);
}

/* Fine blueprint grid, fading out toward the bottom */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--hairline) 1px, transparent 1px),
    linear-gradient(90deg, var(--hairline) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), rgba(0, 0, 0, 0) 82%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), rgba(0, 0, 0, 0) 82%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* Status strip */
.hero-status {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 16px 7px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-card);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  box-shadow: var(--shadow-1);
}

.hero-status .pulse {
  position: relative;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
}

.hero-status .pulse::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: var(--green);
  animation: pulse-ring 2.2s ease-out infinite;
}

@keyframes pulse-ring {
  0% {
    transform: scale(1);
    opacity: 0.7;
  }
  70%,
  100% {
    transform: scale(2.6);
    opacity: 0;
  }
}

.hero h1 {
  margin: 26px 0 0;
  font-size: clamp(2.3rem, 5.4vw, 3.9rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  max-width: 20ch;
}

.hero h1 .grad {
  background: var(--grad-heading);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.hero-lead {
  margin: 22px 0 0;
  max-width: 640px;
  font-size: 1.08rem;
  line-height: 1.7;
  color: var(--text-muted);
}

.hero-lead strong {
  color: var(--text-soft);
  font-weight: 600;
}

/* Capability pills */
.hero-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 28px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-top: 34px;
}

/* Banner in a console frame */
.hero-banner {
  display: block;
  width: 100%;
  max-width: 980px;
  margin: 56px auto 0;
  border-radius: 16px;
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-2);
}

/* Meta strip */
.hero-meta {
  display: flex;
  flex-wrap: nowrap;
  width: 100%;
  max-width: 980px;
  margin: 48px auto 0;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--bg-card);
  box-shadow: var(--shadow-1);
  overflow: hidden;
}

.hero-meta div {
  flex: 1 1 25%;
  padding: 16px 20px;
  border-right: 1px solid var(--hairline);
  text-align: center;
}

.hero-meta div:last-child {
  border-right: 0;
}

.hero-meta .num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--accent-strong);
}

.hero-meta .lbl {
  display: block;
  margin-top: 2px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-faint);
}

/* ==========================================================================
   Sections, kickers & headings
   ========================================================================== */
section h2 {
  position: relative;
  margin: 0 0 14px;
  font-size: clamp(1.55rem, 3vw, 2.1rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

/* Mono kicker above each section title:  // 01 · ABOUT */
main > section[data-kicker]::before {
  content: "// " attr(data-kicker);
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
}

.section-intro {
  max-width: 720px;
  margin: 0 0 32px;
  color: var(--text-muted);
  font-size: 1.02rem;
}

.section-intro strong {
  color: var(--text-soft);
}

.section-intro a {
  font-weight: 500;
}

/* ==========================================================================
   Cards
   ========================================================================== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 16px;
}

.card {
  position: relative;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--bg-card);
  box-shadow: var(--shadow-1);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--grad-accent);
  opacity: 0;
  transition: opacity 0.18s ease;
}

.card:hover {
  transform: translateY(-3px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-2);
}

.card:hover::before {
  opacity: 1;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 1.02rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.card p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--text-muted);
}

.card p code,
.section-intro code,
.callout code,
.steps code,
.example-user code {
  padding: 2px 7px;
  border-radius: 6px;
  background: var(--bg-chip);
  border: 1px solid var(--hairline);
  color: var(--accent-strong);
  font-size: 0.84em;
}

/* ==========================================================================
   Data-grid tables
   ========================================================================== */
.table-scroll-hint {
  display: none;
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-faint);
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--bg-card);
  box-shadow: var(--shadow-1);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

thead th {
  padding: 14px 18px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: var(--bg-soft);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

tbody td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--hairline);
  color: var(--text-soft);
  vertical-align: top;
}

tbody tr:last-child td {
  border-bottom: 0;
}

tbody tr {
  transition: background-color 0.14s ease;
}

tbody tr:hover {
  background: var(--bg-chip);
}

td code,
th code {
  padding: 2px 7px;
  border-radius: 6px;
  background: var(--bg-chip);
  border: 1px solid var(--hairline);
  color: var(--accent-strong);
  font-size: 0.84em;
  white-space: nowrap;
}

/* Highlighted column (comparison table) */
.highlight-col {
  background: var(--accent-soft);
  border-left: 1px solid var(--hairline);
  border-right: 1px solid var(--hairline);
  color: var(--text);
  font-weight: 500;
}

/* ==========================================================================
   Tools reference
   ========================================================================== */
.tool-category {
  margin-bottom: 28px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--bg-card);
  box-shadow: var(--shadow-1);
  overflow: hidden;
}

.tool-category h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 15px 20px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-soft);
  background: var(--code-head-bg);
  border-bottom: 1px solid var(--hairline);
}

.tool-category h3::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--grad-accent);
  flex: 0 0 auto;
}

.tool-list {
  counter-reset: tools;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(330px, 1fr));
  gap: 0;
  padding: 6px;
}

.tool-item {
  counter-increment: tools;
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 14px;
  border-radius: 10px;
  transition: background-color 0.14s ease;
}

.tool-item:hover {
  background: var(--bg-chip);
}

.tool-item code {
  flex: 0 0 auto;
  padding: 3px 9px;
  border-radius: 7px;
  background: var(--accent-soft);
  border: 1px solid transparent;
  color: var(--accent-strong);
  font-size: 0.8rem;
  font-weight: 500;
}

.tool-item span {
  color: var(--text-muted);
  font-size: 0.88rem;
}

/* ==========================================================================
   Code blocks (console windows)
   ========================================================================== */
.code-label {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 18px;
  border: 1px solid var(--border);
  border-bottom: 0;
  border-radius: 14px 14px 0 0;
  background: var(--code-head-bg);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.code-label + .code-block {
  border-top-left-radius: 0;
  border-top-right-radius: 0;
}

.code-label + .code-block pre {
  border-top: 1px solid var(--hairline);
}

/* Traffic-light dots */
.code-label::before {
  content: "";
  flex: 0 0 auto;
  width: 34px;
  height: 12px;
  background:
    radial-gradient(circle at 6px 6px, var(--red) 4px, transparent 4.5px),
    radial-gradient(circle at 18px 6px, var(--amber) 4px, transparent 4.5px),
    radial-gradient(circle at 30px 6px, var(--green) 4px, transparent 4.5px);
  opacity: 0.85;
}

.code-block {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--bg-code);
  box-shadow: var(--shadow-1);
  overflow: hidden;
}

.code-block pre {
  margin: 0;
  padding: 20px 22px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  line-height: 1.7;
  color: #c8d6f2;
  tab-size: 2;
}

[data-theme="light"] .code-block pre,
[data-theme="light"] .example-result {
  color: #c8d6f2;
}

/* ==========================================================================
   Steps (setup timeline)
   ========================================================================== */
.steps {
  counter-reset: step;
  list-style: none;
  margin: 0 0 36px;
  padding: 0;
  display: grid;
  gap: 0;
}

.steps li {
  counter-increment: step;
  position: relative;
  padding: 0 0 28px 58px;
}

.steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: -2px;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  border: 1px solid var(--border-strong);
  background: var(--bg-card);
  box-shadow: var(--shadow-1);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent-strong);
}

.steps li::after {
  content: "";
  position: absolute;
  left: 20px;
  top: 42px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(180deg, var(--border-strong), transparent);
}

.steps li:last-child {
  padding-bottom: 0;
}

.steps li:last-child::after {
  display: none;
}

.steps strong {
  display: block;
  margin-bottom: 4px;
  font-size: 1rem;
  letter-spacing: -0.01em;
}

.steps p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Callouts
   ========================================================================== */
.callout {
  position: relative;
  margin: 28px 0 0;
  padding: 18px 22px 18px 52px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--bg-card);
  box-shadow: var(--shadow-1);
  font-size: 0.94rem;
  color: var(--text-soft);
}

.callout::before {
  position: absolute;
  left: 18px;
  top: 16px;
  font-size: 1.05rem;
  line-height: 1;
}

.callout::after {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 3px;
  border-radius: 3px;
  background: var(--accent);
}

.callout-info::before {
  content: "ⓘ";
  color: var(--cyan);
}

.callout-info::after {
  background: var(--cyan);
}

.callout-warning::before {
  content: "△";
  color: var(--amber);
}

.callout-warning::after {
  background: var(--amber);
}

.callout strong {
  color: var(--text);
}

/* ==========================================================================
   Examples (agent chat)
   ========================================================================== */
.example {
  margin-bottom: 26px;
}

.example-user {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 10px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-soft);
}

.example-user::before {
  content: "❯";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--cyan);
}

.example-result {
  position: relative;
  margin: 0;
  padding: 18px 20px 16px 22px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--bg-code);
  box-shadow: var(--shadow-1);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.7;
  color: #c8d6f2;
  overflow-x: auto;
  white-space: pre-wrap;
}

/* AGENT output bar */
.example-result::before {
  content: "AGENT · MCP OUTPUT";
  display: block;
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--hairline);
  font-size: 0.66rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--green);
}

/* ==========================================================================
   Buttons & badges
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 46px;
  padding: 0 24px;
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: transform 0.16s ease, filter 0.16s ease, border-color 0.16s ease, background-color 0.16s ease;
}

.btn-primary {
  background: var(--grad-accent);
  color: #ffffff;
  box-shadow: 0 6px 22px rgba(64, 116, 255, 0.35);
}

.btn-primary:hover {
  color: #ffffff;
  transform: translateY(-2px);
  filter: brightness(1.1);
}

.btn-secondary {
  border: 1px solid var(--border-strong);
  color: var(--text-soft);
  background: var(--bg-card);
}

.btn-secondary:hover {
  color: var(--text);
  border-color: var(--accent);
  transform: translateY(-2px);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 15px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-card);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.badge::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--dot, var(--accent));
}

.badge-green {
  --dot: var(--green);
}

.badge-blue {
  --dot: var(--accent);
}

.badge-purple {
  --dot: var(--violet);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  margin-top: 72px;
  padding: 40px 24px 44px;
  border-top: 1px solid var(--border);
  background: var(--bg-soft);
  text-align: center;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 28px;
  margin-bottom: 20px;
}

.footer-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
}

.footer-links a:hover {
  color: var(--accent-strong);
}

.site-footer p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.site-footer p code {
  padding: 2px 7px;
  border-radius: 6px;
  background: var(--bg-chip);
  border: 1px solid var(--hairline);
  color: var(--accent-strong);
}

.footer-note {
  margin-top: 12px !important;
  font-size: 0.76rem !important;
  color: var(--text-faint) !important;
}

/* ==========================================================================
   Mobile navigation & responsive
   ========================================================================== */
@media (max-width: 900px) {
  .header-strip {
    display: none;
  }

  /* Strip hidden — the sticky header is just the 64px bar */
  section[id],
  [id="top"] {
    scroll-margin-top: 80px;
  }

  .nav-menu-toggle {
    display: grid;
  }

  .header-bar {
    flex-wrap: nowrap;
  }

  .nav-menu {
    position: fixed;
    top: var(--nav-menu-top, 64px);
    left: 0;
    right: 0;
    z-index: 55;
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    margin: 0;
    padding: 18px 20px 22px;
    border-bottom: 1px solid var(--border);
    background: var(--bg);
    box-shadow: var(--shadow-2);
    max-height: calc(100vh - var(--nav-menu-top, 64px));
    overflow-y: auto;
    display: none;
  }

  body.nav-open .nav-menu {
    display: flex;
  }

  .nav-links {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }

  .nav-links a {
    display: block;
    padding: 12px 14px;
    border-radius: 10px;
    font-size: 1rem;
  }

  .nav-links a::after {
    display: none;
  }

  .nav-actions {
    padding-top: 6px;
    border-top: 1px solid var(--hairline);
  }

  .nav-cta {
    flex: 1;
    justify-content: center;
  }
}

@media (max-width: 720px) {
  main > section {
    padding-top: 60px;
    padding-bottom: 24px;
  }

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

  .hero-status {
    font-size: 0.64rem;
    letter-spacing: 0.1em;
  }

  .hero-meta {
    flex-direction: column;
  }

  .hero-meta div {
    border-right: 0;
    border-bottom: 1px solid var(--hairline);
    text-align: center;
  }

  .hero-meta div:last-child {
    border-bottom: 0;
  }

  .tool-list {
    grid-template-columns: 1fr;
  }

  .table-scroll-hint {
    display: block;
  }

  .steps li {
    padding-left: 52px;
  }

  .code-block pre,
  .example-result {
    font-size: 0.76rem;
  }

  .logo-text {
    font-size: 0.9rem;
  }
}

/* ==========================================================================
   Motion preferences
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}