/* ── Design Tokens ── */
:root {
  --ms-bg: #0d1117;
  --ms-bg-2: #131921;
  --ms-bg-3: #1a2233;
  --ms-bg-card: #161d2b;
  --ms-bg-elevated: #1e2a3d;
  --ms-border: #253047;
  --ms-border-2: #34465e;
  --ms-green: #4ade80;
  --ms-green-dim: #22c55e;
  --ms-green-glow: rgba(74, 222, 128, 0.20);
  --ms-green-soft: rgba(74, 222, 128, 0.10);
  --ms-cyan: #38bdf8;
  --ms-blue: #60a5fa;
  --ms-text: #edf2ff;
  --ms-text-2: #b8d0e0;
  --ms-text-3: #96b5c8;
  --ms-radius: 6px;
  --ms-radius-lg: 12px;
  --ms-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --font-pixel: 'Press Start 2P', cursive;
  --font-body: 'DM Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'DM Mono', monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  background: var(--ms-bg);
  color: var(--ms-text);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  background-image:
    radial-gradient(ellipse 90% 40% at 50% -8%, rgba(74, 222, 128, 0.06) 0%, transparent 55%),
    radial-gradient(ellipse 60% 30% at 80% 60%, rgba(56, 189, 248, 0.03) 0%, transparent 50%);
}

a {
  color: var(--ms-green);
  text-decoration: none;
}

a:hover {
  color: #a7f3c9;
}

::selection {
  background: rgba(74, 222, 128, 0.3);
  color: var(--ms-text);
}

:focus-visible {
  outline: 2px solid var(--ms-green) !important;
  outline-offset: 3px;
  border-radius: var(--ms-radius);
}

/* ── Skip link ── */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--ms-green);
  color: #0d1117;
  font-weight: 700;
  padding: 0.5rem 1rem;
  border-radius: 0 0 var(--ms-radius) var(--ms-radius);
  z-index: 9999;
  transition: top 0.2s;
}

.skip-link:focus {
  top: 0;
}

/* ── Header ── */
.ms-header {
  position: sticky;
  top: 0;
  z-index: 300;
  background: rgba(13, 17, 23, 0.92);
  backdrop-filter: blur(24px) saturate(1.5);
  -webkit-backdrop-filter: blur(24px) saturate(1.5);
  border-bottom: 1px solid var(--ms-border);
  transition: box-shadow 0.2s;
}

.ms-header.scrolled {
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
}

.ms-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 60px;
}

.ms-logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
}

.ms-logo-img {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  border: 1px solid var(--ms-border-2);
  box-shadow: 0 0 12px rgba(74, 222, 128, 0.2);
}

.ms-logo-text {
  font-family: var(--font-pixel);
  font-size: 0.6rem;
  color: var(--ms-green);
  letter-spacing: 0.1em;
  text-shadow: 0 0 20px rgba(74, 222, 128, 0.6);
}

.ms-nav-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  align-items: center;
}

.ms-nav-links a {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--ms-text-2);
  letter-spacing: 0.02em;
  transition: color 0.22s var(--ms-ease);
  position: relative;
  padding-bottom: 2px;
}

.ms-nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--ms-green);
  border-radius: 1px;
  transition: width 0.22s var(--ms-ease);
}

.ms-nav-links a:hover {
  color: var(--ms-text);
}

.ms-nav-links a:hover::after {
  width: 100%;
}

.ms-nav-active {
  color: var(--ms-green) !important;
}

.ms-nav-active::after {
  width: 100% !important;
}

.ms-nav-cta {
  background: linear-gradient(135deg, rgba(74, 222, 128, 0.15), rgba(74, 222, 128, 0.08)) !important;
  border: 1px solid rgba(74, 222, 128, 0.35) !important;
  border-radius: 999px !important;
  padding: 0.42rem 1.1rem !important;
  color: var(--ms-green) !important;
  font-size: 0.82rem !important;
  font-weight: 600 !important;
}

.ms-nav-cta::after {
  display: none !important;
}

.ms-nav-cta:hover {
  background: rgba(74, 222, 128, 0.22) !important;
  border-color: var(--ms-green) !important;
  box-shadow: 0 0 16px rgba(74, 222, 128, 0.25) !important;
}

.ms-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 1px solid transparent;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: var(--ms-radius);
}

.ms-menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ms-text-2);
  border-radius: 2px;
  transition: all 0.25s var(--ms-ease);
}

/* ── Hero ── */
.ms-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 5rem 1.5rem 3rem;
  text-align: center;
  position: relative;
}

.ms-hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(74, 222, 128, 0.08);
  border: 1px solid rgba(74, 222, 128, 0.22);
  border-radius: 999px;
  padding: 0.35rem 0.9rem;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--ms-green);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  animation: fadeUp 0.6s var(--ms-ease) both;
}

.ms-hero-title {
  font-family: var(--font-body);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.025em;
  color: var(--ms-text);
  max-width: 720px;
  margin-bottom: 1.25rem;
  animation: fadeUp 0.6s 0.1s var(--ms-ease) both;
}

.ms-hero-title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--ms-green), var(--ms-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.ms-hero-sub {
  font-size: 1.05rem;
  color: var(--ms-text-3);
  max-width: 520px;
  line-height: 1.65;
  margin-bottom: 2.5rem;
  animation: fadeUp 0.6s 0.2s var(--ms-ease) both;
}

.ms-hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: center;
  margin-bottom: 3rem;
  animation: fadeUp 0.6s 0.3s var(--ms-ease) both;
}

.ms-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--ms-bg-card);
  border: 1px solid var(--ms-border);
  border-radius: 999px;
  padding: 0.3rem 0.8rem;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--ms-text-2);
}

.ms-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ms-green);
  box-shadow: 0 0 6px var(--ms-green);
}

/* ── Seed Form Card ── */
.ms-form-card {
  background: var(--ms-bg-card);
  border: 1px solid var(--ms-border);
  border-radius: var(--ms-radius-lg);
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.6);
  position: relative;
  overflow: hidden;
  max-width: 560px;
  width: 100%;
  animation: fadeUp 0.6s 0.25s var(--ms-ease) both;
}

.ms-form-card-accent {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--ms-green), var(--ms-cyan));
  opacity: 0.9;
}

.ms-form-inner {
  padding: 2.5rem 2rem;
}

.ms-form-title {
  font-family: var(--font-body);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--ms-text);
  text-align: center;
  margin-bottom: 0.4rem;
}

.ms-form-hint {
  text-align: center;
  color: var(--ms-text-3);
  font-size: 0.88rem;
  margin-bottom: 2rem;
  line-height: 1.5;
}

.ms-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.ms-field-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.ms-field {
  flex: 1;
  min-width: 140px;
}

.ms-label {
  display: block;
  font-size: 0.78rem;
  color: var(--ms-text-2);
  margin-bottom: 0.4rem;
  font-weight: 500;
}

.ms-select,
.ms-input {
  width: 100%;
  background: var(--ms-bg-3);
  border: 1px solid var(--ms-border-2);
  color: var(--ms-text);
  padding: 0.65rem 0.8rem;
  border-radius: var(--ms-radius);
  font-family: inherit;
  font-size: 0.9rem;
  outline: none;
  cursor: pointer;
  transition: border-color 0.2s, box-shadow 0.2s;
  -webkit-appearance: none;
}

.ms-input {
  cursor: text;
  font-size: 1rem;
}

.ms-input::placeholder {
  color: var(--ms-text-3);
}

.ms-input:focus,
.ms-select:focus {
  border-color: var(--ms-green);
  box-shadow: 0 0 0 3px rgba(74, 222, 128, 0.15);
}

.ms-seed-row {
  display: flex;
  gap: 0.5rem;
}

.ms-seed-row .ms-input {
  flex: 1;
  min-width: 0;
}

.ms-btn-dice {
  background: var(--ms-bg-3);
  border: 1px solid var(--ms-border-2);
  color: var(--ms-text);
  padding: 0 1rem;
  border-radius: var(--ms-radius);
  cursor: pointer;
  font-size: 1.2rem;
  transition: background 0.2s, border-color 0.2s, transform 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.ms-btn-dice:hover {
  background: var(--ms-bg-card);
  border-color: var(--ms-green);
  transform: rotate(-12deg) scale(1.1);
}

.ms-btn-submit {
  width: 100%;
  margin-top: 0.5rem;
  background: linear-gradient(135deg, #4ade80, #22c55e);
  color: #0d1117;
  border: none;
  padding: 0.9rem;
  border-radius: var(--ms-radius);
  font-weight: 700;
  font-size: 1rem;
  font-family: inherit;
  cursor: pointer;
  transition: transform 0.2s var(--ms-ease), box-shadow 0.2s;
  box-shadow: 0 4px 20px rgba(74, 222, 128, 0.3);
}

.ms-btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(74, 222, 128, 0.4);
}

.ms-btn-submit:active {
  transform: translateY(0);
}

/* ── Section wrapper ── */
.ms-section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 5rem 1.5rem;
}

.ms-section-title {
  font-family: var(--font-body);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ms-text);
  margin-bottom: 0.6rem;
  text-align: center;
}

.ms-section-sub {
  text-align: center;
  color: var(--ms-text-3);
  font-size: 1rem;
  max-width: 540px;
  margin: 0 auto 3.5rem;
  line-height: 1.65;
}

/* ── Features grid ── */
.ms-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 1.25rem;
}

.ms-feature-card {
  background: var(--ms-bg-card);
  border: 1px solid var(--ms-border);
  border-radius: var(--ms-radius-lg);
  padding: 1.75rem;
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
  position: relative;
  overflow: hidden;
}

.ms-feature-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--ms-green-soft) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}

.ms-feature-card:hover {
  border-color: rgba(74, 222, 128, 0.4);
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
}

.ms-feature-card:hover::before {
  opacity: 1;
}

.ms-feature-icon {
  font-size: 1.8rem;
  margin-bottom: 1rem;
  display: block;
  line-height: 1;
}

.ms-feature-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--ms-text);
  margin-bottom: 0.5rem;
}

.ms-feature-desc {
  font-size: 0.875rem;
  color: var(--ms-text-3);
  line-height: 1.6;
}

/* ── Structures list ── */
.ms-structures {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: center;
  margin-top: 1.5rem;
}

.ms-struct-chip {
  background: var(--ms-bg-3);
  border: 1px solid var(--ms-border);
  border-radius: 999px;
  padding: 0.35rem 0.85rem;
  font-size: 0.8rem;
  color: var(--ms-text-2);
  transition: border-color 0.2s, color 0.2s;
}

.ms-struct-chip:hover {
  border-color: var(--ms-green);
  color: var(--ms-green);
}

/* ── FAQ ── */
.ms-faq {
  max-width: 780px;
  margin: 0 auto;
}

.ms-faq-item {
  background: var(--ms-bg-card);
  border: 1px solid var(--ms-border);
  border-radius: var(--ms-radius-lg);
  margin-bottom: 0.75rem;
  overflow: hidden;
  transition: border-color 0.2s;
}

.ms-faq-item:hover {
  border-color: rgba(74, 222, 128, 0.3);
}

.ms-faq-q {
  width: 100%;
  background: none;
  border: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  cursor: pointer;
  padding: 1.2rem 1.5rem;
  text-align: left;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ms-text);
  transition: color 0.2s;
}

.ms-faq-q:hover {
  color: var(--ms-green);
}

.ms-faq-icon {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border: 1px solid var(--ms-border-2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  color: var(--ms-text-3);
  transition: transform 0.3s var(--ms-ease), background 0.2s, border-color 0.2s;
}

.ms-faq-item[open] .ms-faq-icon,
.ms-faq-item.open .ms-faq-icon {
  transform: rotate(45deg);
  background: var(--ms-green-soft);
  border-color: rgba(74, 222, 128, 0.4);
  color: var(--ms-green);
}

.ms-faq-a {
  padding: 0 1.5rem 1.25rem;
  font-size: 0.9rem;
  color: var(--ms-text-3);
  line-height: 1.7;
  display: none;
}

.ms-faq-item.open .ms-faq-a {
  display: block;
}

/* ── Versions table ── */
.ms-versions {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 0.75rem;
  margin-top: 2rem;
}

.ms-version-card {
  background: var(--ms-bg-card);
  border: 1px solid var(--ms-border);
  border-radius: var(--ms-radius-lg);
  padding: 1rem;
  text-align: center;
  transition: border-color 0.2s, transform 0.2s;
}

.ms-version-card:hover {
  border-color: var(--ms-green);
  transform: translateY(-2px);
}

.ms-version-num {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ms-green);
  display: block;
  margin-bottom: 0.25rem;
}

.ms-version-label {
  font-size: 0.75rem;
  color: var(--ms-text-3);
}

/* ── CTA banner ── */
.ms-cta-banner {
  background: linear-gradient(135deg, rgba(74, 222, 128, 0.08) 0%, rgba(56, 189, 248, 0.06) 100%);
  border: 1px solid rgba(74, 222, 128, 0.2);
  border-radius: var(--ms-radius-lg);
  padding: 3rem 2rem;
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}

.ms-cta-banner h2 {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--ms-text);
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
}

.ms-cta-banner p {
  color: var(--ms-text-3);
  font-size: 0.95rem;
  line-height: 1.65;
  margin-bottom: 1.75rem;
}

.ms-btn-cta {
  display: inline-block;
  background: linear-gradient(135deg, #4ade80, #22c55e);
  color: #0d1117;
  border: none;
  padding: 0.85rem 2rem;
  border-radius: var(--ms-radius);
  font-weight: 700;
  font-size: 0.95rem;
  font-family: inherit;
  cursor: pointer;
  text-decoration: none;
  box-shadow: 0 4px 20px rgba(74, 222, 128, 0.3);
  transition: transform 0.2s, box-shadow 0.2s;
}

.ms-btn-cta:hover {
  color: #0d1117;
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(74, 222, 128, 0.4);
}

/* ── Divider ── */
.ms-divider {
  border: none;
  border-top: 1px solid var(--ms-border);
  max-width: 1100px;
  margin: 0 auto;
}

/* ── Two-column explainer layout ── */
.ms-explainer {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
  margin-top: 3rem;
}

.ms-explainer-panel {
  background: var(--ms-bg-card);
  border: 1px solid var(--ms-border);
  border-radius: var(--ms-radius-lg);
  padding: 2rem;
}

.ms-explainer-panel.danger {
  border-color: rgba(248, 113, 113, 0.3);
  background: rgba(248, 113, 113, 0.04);
}

.ms-explainer-panel.success {
  border-color: rgba(74, 222, 128, 0.3);
  background: rgba(74, 222, 128, 0.04);
}

.ms-panel-label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: 999px;
  padding: 0.25rem 0.75rem;
  margin-bottom: 1rem;
}

.ms-panel-label.bad {
  color: #f87171;
  background: rgba(248, 113, 113, 0.1);
  border: 1px solid rgba(248, 113, 113, 0.25);
}

.ms-panel-label.good {
  color: var(--ms-green);
  background: var(--ms-green-soft);
  border: 1px solid rgba(74, 222, 128, 0.3);
}

.ms-panel-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ms-text);
  margin-bottom: 0.75rem;
}

.ms-panel-body {
  font-size: 0.875rem;
  color: var(--ms-text-3);
  line-height: 1.7;
}

/* ── Process pipeline diagram ── */
.ms-pipeline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: 1.25rem 0;
}

.ms-pipe-step {
  background: var(--ms-bg-3);
  border: 1px solid var(--ms-border-2);
  border-radius: var(--ms-radius);
  padding: 0.45rem 0.85rem;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--ms-text-2);
}

.ms-pipe-step.active {
  background: var(--ms-green-soft);
  border-color: rgba(74, 222, 128, 0.4);
  color: var(--ms-green);
}

.ms-pipe-step.blocked {
  background: rgba(248, 113, 113, 0.08);
  border-color: rgba(248, 113, 113, 0.3);
  color: #f87171;
  text-decoration: line-through;
  opacity: 0.7;
}

.ms-pipe-arrow {
  color: var(--ms-text-3);
  font-size: 0.8rem;
  flex-shrink: 0;
}

/* ── Math blocks ── */
.ms-math-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.ms-math-card {
  background: var(--ms-bg-card);
  border: 1px solid var(--ms-border);
  border-radius: var(--ms-radius-lg);
  padding: 1.75rem;
  position: relative;
  overflow: hidden;
}

.ms-math-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--ms-cyan), var(--ms-blue));
}

.ms-math-label {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ms-cyan);
  margin-bottom: 0.75rem;
}

.ms-math-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--ms-text);
  margin-bottom: 1rem;
}

.ms-math-formula {
  /* Container — works for both noscript plain text and KaTeX rendered output */
  background: rgba(56, 189, 248, 0.07);
  border: 1px solid rgba(56, 189, 248, 0.18);
  border-radius: var(--ms-radius);
  padding: 1.1rem 1.25rem;
  margin: 1rem 0;
  overflow-x: auto;
  /* KaTeX display mode already handles font/sizing; only apply mono to noscript fallback */
  line-height: 1.6;
  text-align: center;
}

/* Noscript fallback: style the raw text nicely when KaTeX hasn't loaded */
.ms-math-formula noscript {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--ms-cyan);
  white-space: nowrap;
}

/* KaTeX overrides — make rendered math match site palette */
.ms-math-formula .katex {
  font-size: 1.15rem;
  color: var(--ms-cyan);
}

.ms-math-formula .katex .mord,
.ms-math-formula .katex .mopen,
.ms-math-formula .katex .mclose,
.ms-math-formula .katex .mrel,
.ms-math-formula .katex .mbin,
.ms-math-formula .katex .mpunct {
  color: var(--ms-cyan);
}

.ms-math-formula .katex-display {
  margin: 0;
  overflow-x: auto;
  overflow-y: hidden;
}

.ms-math-desc {
  font-size: 0.83rem;
  color: var(--ms-text-3);
  line-height: 1.65;
}

.ms-math-var {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-top: 0.85rem;
}

.ms-math-var-row {
  display: flex;
  gap: 0.5rem;
  font-size: 0.8rem;
  align-items: baseline;
}

.ms-math-var-key {
  font-family: var(--font-mono);
  color: var(--ms-cyan);
  flex-shrink: 0;
  min-width: 2.5rem;
}

.ms-math-var-val {
  color: var(--ms-text-3);
}

.ms-callout {
  background: rgba(74, 222, 128, 0.07);
  border: 1px solid rgba(74, 222, 128, 0.22);
  border-left: 3px solid var(--ms-green);
  border-radius: 0 var(--ms-radius) var(--ms-radius) 0;
  padding: 0.85rem 1rem;
  margin-top: 1rem;
  font-size: 0.83rem;
  color: var(--ms-text-2);
  line-height: 1.6;
}

/* ── Chaos Cubed steps ── */
.ms-steps {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.ms-step {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
}

.ms-step-num {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--ms-green), var(--ms-cyan));
  color: #0d1117;
  font-weight: 800;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 14px rgba(74, 222, 128, 0.3);
  margin-top: 0.1rem;
}

.ms-step-content {
  flex: 1;
}

.ms-step-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--ms-text);
  margin-bottom: 0.35rem;
}

.ms-step-body {
  font-size: 0.875rem;
  color: var(--ms-text-3);
  line-height: 1.65;
}

.ms-chaos-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: linear-gradient(135deg, rgba(251, 191, 36, 0.12), rgba(251, 146, 60, 0.08));
  border: 1px solid rgba(251, 191, 36, 0.3);
  border-radius: 999px;
  padding: 0.3rem 0.9rem;
  font-size: 0.72rem;
  font-weight: 700;
  color: #fbbf24;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

/* ── level.dat drop zone ── */
.ms-dat-layout {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 2.5rem;
  align-items: start;
  margin-top: 2.5rem;
}

.ms-dropzone {
  background: var(--ms-bg-card);
  border: 2px dashed var(--ms-border-2);
  border-radius: var(--ms-radius-lg);
  padding: 2.5rem 1.5rem;
  text-align: center;
  transition: border-color 0.25s, background 0.25s;
  cursor: pointer;
}

.ms-dropzone:hover {
  border-color: var(--ms-green);
  background: rgba(74, 222, 128, 0.04);
}

.ms-dropzone-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  display: block;
  filter: grayscale(0.3);
}

.ms-dropzone-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--ms-text);
  margin-bottom: 0.4rem;
}

.ms-dropzone-sub {
  font-size: 0.82rem;
  color: var(--ms-text-3);
  line-height: 1.5;
}

.ms-dropzone-badge {
  display: inline-block;
  margin-top: 1rem;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--ms-green);
  background: var(--ms-green-soft);
  border: 1px solid rgba(74, 222, 128, 0.25);
  border-radius: 999px;
  padding: 0.25rem 0.75rem;
  letter-spacing: 0.05em;
}

.ms-paths-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.83rem;
  margin-top: 0.5rem;
}

.ms-paths-table th {
  text-align: left;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ms-text-3);
  padding: 0.6rem 0.85rem;
  border-bottom: 1px solid var(--ms-border);
  background: var(--ms-bg-3);
}

.ms-paths-table th:first-child { border-radius: var(--ms-radius) 0 0 0; }
.ms-paths-table th:last-child  { border-radius: 0 var(--ms-radius) 0 0; }

.ms-paths-table td {
  padding: 0.75rem 0.85rem;
  border-bottom: 1px solid var(--ms-border);
  vertical-align: top;
}

.ms-paths-table tr:last-child td { border-bottom: none; }

.ms-paths-table tr:hover td {
  background: var(--ms-bg-elevated);
}

.ms-os-name {
  font-weight: 600;
  color: var(--ms-text-2);
  white-space: nowrap;
}

.ms-path-code {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ms-cyan);
  word-break: break-all;
}

.ms-paths-card {
  background: var(--ms-bg-card);
  border: 1px solid var(--ms-border);
  border-radius: var(--ms-radius-lg);
  overflow: hidden;
}

.ms-paths-card-header {
  padding: 1rem 1.25rem 0.75rem;
  border-bottom: 1px solid var(--ms-border);
}

.ms-paths-card-title {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--ms-text);
}

.ms-paths-card-sub {
  font-size: 0.78rem;
  color: var(--ms-text-3);
  margin-top: 0.2rem;
}

/* ── Footer styles handled by minesite-override.css ── */

/* ── Animations ── */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ════════════════════════════════════════════
   RESPONSIVE — mobile-first, all breakpoints
   ════════════════════════════════════════════ */

/* ── Large tablets / small desktops (≤1024px) ── */
@media (max-width: 1024px) {
  .ms-section {
    max-width: 100%;
    padding: 4rem 2rem;
  }

  .ms-features {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  }

  .ms-math-grid {
    gap: 1.25rem;
  }

  .ms-explainer {
    gap: 2rem;
  }

  .ms-dat-layout {
    grid-template-columns: 1fr 1.2fr;
    gap: 2rem;
  }
}

/* ── Tablet (≤768px) ── */
@media (max-width: 768px) {
  /* Nav */
  .ms-nav {
    height: 52px;
    padding: 0 1rem;
  }

  .ms-logo-text {
    font-size: 0.5rem;
  }

  .ms-menu-toggle {
    display: flex;
  }

  .ms-nav-links {
    display: none;
    position: absolute;
    top: 52px;
    left: 0;
    right: 0;
    background: rgba(13, 17, 23, 0.98);
    backdrop-filter: blur(24px);
    flex-direction: column;
    padding: 1rem 1.5rem;
    gap: 0;
    border-bottom: 1px solid var(--ms-border);
    z-index: 299;
  }

  .ms-nav-links.open {
    display: flex;
  }

  .ms-nav-links li {
    border-bottom: 1px solid var(--ms-border);
  }

  .ms-nav-links li:last-child {
    border-bottom: none;
  }

  .ms-nav-links a {
    padding: 0.9rem 0;
    font-size: 0.95rem;
    display: block;
  }

  .ms-nav-cta {
    margin-top: 0.5rem !important;
    border-radius: var(--ms-radius) !important;
    text-align: center;
  }

  /* Hero */
  .ms-hero {
    padding: 3rem 1rem 1.5rem;
  }

  .ms-hero-title {
    font-size: clamp(1.7rem, 7vw, 2.5rem);
  }

  .ms-hero-sub {
    font-size: 0.95rem;
  }

  .ms-hero-badges {
    gap: 0.45rem;
  }

  .ms-badge {
    font-size: 0.72rem;
    padding: 0.25rem 0.65rem;
  }

  /* Form card */
  .ms-form-card {
    max-width: 100%;
  }

  .ms-form-inner {
    padding: 1.75rem 1.25rem;
  }

  .ms-field-row {
    flex-direction: column;
    gap: 0.85rem;
  }

  .ms-field {
    min-width: 0;
  }

  /* Sections */
  .ms-section {
    padding: 3rem 1rem;
  }

  .ms-section-title {
    font-size: clamp(1.3rem, 5vw, 1.8rem);
  }

  /* Features */
  .ms-features {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .ms-feature-card {
    padding: 1.4rem;
  }

  /* Structures chips */
  .ms-structures {
    gap: 0.45rem;
  }

  .ms-struct-chip {
    font-size: 0.75rem;
    padding: 0.28rem 0.7rem;
  }

  /* Explainer */
  .ms-explainer {
    grid-template-columns: 1fr;
    gap: 1.25rem;
    margin-top: 2rem;
  }

  .ms-explainer-panel {
    padding: 1.4rem;
  }

  /* Pipeline wraps naturally */
  .ms-pipeline {
    flex-wrap: wrap;
    gap: 0.4rem;
  }

  /* Math grid */
  .ms-math-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
    margin-top: 1.75rem;
  }

  .ms-math-card {
    padding: 1.4rem;
  }

  .ms-math-formula {
    font-size: 0.82rem;
    padding: 0.75rem 0.85rem;
  }

  /* Steps */
  .ms-steps {
    gap: 1rem;
    margin-top: 1.75rem;
  }

  .ms-step {
    gap: 1rem;
  }

  /* Versions grid */
  .ms-versions {
    grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
    gap: 0.6rem;
  }

  .ms-version-card {
    padding: 0.75rem 0.5rem;
  }

  .ms-version-num {
    font-size: 0.85rem;
  }

  .ms-version-label {
    font-size: 0.68rem;
  }

  /* level.dat */
  .ms-dat-layout {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-top: 1.75rem;
  }

  .ms-dropzone {
    padding: 2rem 1.25rem;
  }

  .ms-paths-table th,
  .ms-paths-table td {
    padding: 0.6rem 0.7rem;
  }

  .ms-path-code {
    font-size: 0.72rem;
  }

  /* FAQ */
  .ms-faq-q {
    padding: 1rem 1.1rem;
    font-size: 0.88rem;
  }

  .ms-faq-a {
    padding: 0 1.1rem 1rem;
    font-size: 0.85rem;
  }

  /* CTA */
  .ms-cta-banner {
    padding: 2rem 1.25rem;
  }

  .ms-cta-banner h2 {
    font-size: 1.3rem;
  }

  /* Divider */
  .ms-divider {
    max-width: calc(100% - 2rem);
  }
}

/* ── Mobile (≤480px) ── */
@media (max-width: 480px) {
  .ms-hero {
    padding: 2.5rem 0.85rem 1.25rem;
  }

  .ms-hero-title {
    font-size: clamp(1.5rem, 8vw, 2rem);
    letter-spacing: -0.02em;
  }

  .ms-hero-eyebrow {
    font-size: 0.65rem;
    padding: 0.28rem 0.75rem;
  }

  .ms-hero-sub {
    font-size: 0.9rem;
  }

  .ms-hero-badges {
    gap: 0.35rem;
  }

  .ms-badge {
    font-size: 0.68rem;
    padding: 0.22rem 0.55rem;
  }

  .ms-form-inner {
    padding: 1.4rem 1rem;
  }

  .ms-form-title {
    font-size: 1.15rem;
  }

  .ms-section {
    padding: 2.5rem 0.85rem;
  }

  .ms-section-title {
    font-size: clamp(1.2rem, 6vw, 1.6rem);
  }

  .ms-section-sub {
    font-size: 0.88rem;
  }

  .ms-feature-card {
    padding: 1.2rem;
  }

  .ms-feature-icon {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
  }

  .ms-feature-name {
    font-size: 0.92rem;
  }

  .ms-feature-desc {
    font-size: 0.82rem;
  }

  .ms-explainer-panel {
    padding: 1.1rem;
  }

  .ms-panel-title {
    font-size: 0.95rem;
  }

  .ms-panel-body {
    font-size: 0.82rem;
  }

  .ms-pipe-step {
    font-size: 0.72rem;
    padding: 0.35rem 0.65rem;
  }

  .ms-math-card {
    padding: 1.1rem;
  }

  .ms-math-title {
    font-size: 0.92rem;
  }

  .ms-math-formula {
    padding: 0.75rem 0.85rem;
    /* KaTeX renders its own sizing; let it scroll horizontally on tiny screens */
    overflow-x: auto;
  }

  .ms-math-formula .katex {
    font-size: 0.95rem;
  }

  .ms-math-desc {
    font-size: 0.78rem;
  }

  .ms-callout {
    font-size: 0.78rem;
    padding: 0.75rem 0.85rem;
  }

  .ms-step-num {
    width: 30px;
    height: 30px;
    font-size: 0.78rem;
    flex-shrink: 0;
  }

  .ms-step-title {
    font-size: 0.88rem;
  }

  .ms-step-body {
    font-size: 0.8rem;
  }

  .ms-versions {
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
  }

  .ms-version-card {
    padding: 0.65rem 0.35rem;
  }

  .ms-version-num {
    font-size: 0.78rem;
  }

  .ms-version-label {
    font-size: 0.6rem;
  }

  .ms-dropzone {
    padding: 1.6rem 1rem;
  }

  .ms-dropzone-icon {
    font-size: 2rem;
  }

  .ms-dropzone-title {
    font-size: 0.9rem;
  }

  .ms-dropzone-sub {
    font-size: 0.78rem;
  }

  /* Stack the table into a friendlier layout on tiny screens */
  .ms-paths-table,
  .ms-paths-table thead,
  .ms-paths-table tbody,
  .ms-paths-table tr,
  .ms-paths-table th,
  .ms-paths-table td {
    display: block;
    width: 100%;
  }

  .ms-paths-table thead {
    display: none;
  }

  .ms-paths-table tr {
    border-bottom: 1px solid var(--ms-border);
    padding: 0.75rem 0.85rem;
  }

  .ms-paths-table tr:last-child {
    border-bottom: none;
  }

  .ms-paths-table td {
    border: none;
    padding: 0.2rem 0;
  }

  .ms-os-name {
    font-size: 0.8rem;
    margin-bottom: 0.25rem;
  }

  .ms-path-code {
    font-size: 0.7rem;
    word-break: break-all;
  }

  .ms-faq-q {
    padding: 0.9rem 1rem;
    font-size: 0.84rem;
    gap: 0.75rem;
  }

  .ms-faq-a {
    padding: 0 1rem 0.9rem;
    font-size: 0.82rem;
  }

  .ms-cta-banner {
    padding: 1.75rem 1rem;
  }

  .ms-cta-banner h2 {
    font-size: 1.15rem;
  }

  .ms-cta-banner p {
    font-size: 0.875rem;
  }

  .ms-btn-cta {
    padding: 0.8rem 1.5rem;
    font-size: 0.9rem;
  }

  .ms-btn-submit {
    font-size: 0.95rem;
    padding: 0.85rem;
  }

  .ms-struct-chip {
    font-size: 0.7rem;
    padding: 0.25rem 0.6rem;
  }
}

/* ── Very small (≤360px) ── */
@media (max-width: 360px) {
  .ms-hero-title {
    font-size: 1.4rem;
  }

  .ms-versions {
    grid-template-columns: repeat(2, 1fr);
  }

  .ms-math-formula .katex {
    font-size: 0.85rem;
  }

  .ms-hero-badges {
    flex-direction: column;
    align-items: center;
  }
}

/* ── Touch: remove hover transforms that cause layout jank ── */
@media (hover: none) {
  .ms-feature-card:hover,
  .ms-version-card:hover,
  .ms-btn-submit:hover,
  .ms-btn-cta:hover {
    transform: none;
  }

  .ms-btn-dice:hover {
    transform: none;
  }
}

/* ── Wide / ultrawide (≥1400px) ── */
@media (min-width: 1400px) {
  .ms-section {
    max-width: 1200px;
  }

  .ms-features {
    grid-template-columns: repeat(3, 1fr);
  }

  .ms-math-grid {
    grid-template-columns: 1fr 1fr;
  }

  .ms-explainer {
    gap: 4rem;
  }
}

/* ════════════════════════════════════
   INTERNAL LINKING CTA CLUSTER
   ════════════════════════════════════ */
.ms-internal-cta {
  margin-top: 3rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--ms-border);
}

.ms-internal-cta-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ms-text-3);
  margin-bottom: 1rem;
  text-align: center;
}

.ms-internal-cta-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.ms-internal-link {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  background: var(--ms-bg-card);
  border: 1px solid var(--ms-border);
  border-radius: var(--ms-radius-lg);
  padding: 1rem 1.1rem;
  text-decoration: none;
  color: var(--ms-text);
  transition: border-color 0.22s var(--ms-ease), background 0.22s, transform 0.2s;
  position: relative;
  overflow: hidden;
}

.ms-internal-link::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--ms-green-soft) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.25s;
  pointer-events: none;
}

.ms-internal-link:hover {
  border-color: rgba(74, 222, 128, 0.4);
  background: var(--ms-bg-elevated);
  transform: translateY(-2px);
  color: var(--ms-text);
}

.ms-internal-link:hover::before {
  opacity: 1;
}

.ms-internal-link-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  line-height: 1;
}

.ms-internal-link-text {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  min-width: 0;
}

.ms-internal-link-text strong {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--ms-text);
  display: block;
}

.ms-internal-link-text small {
  font-size: 0.75rem;
  color: var(--ms-text-3);
  line-height: 1.4;
}

.ms-internal-link-arrow {
  font-size: 1rem;
  color: var(--ms-green);
  flex-shrink: 0;
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 0.2s, transform 0.2s;
}

.ms-internal-link:hover .ms-internal-link-arrow {
  opacity: 1;
  transform: translateX(0);
}

@media (max-width: 768px) {
  .ms-internal-cta-links {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .ms-internal-link {
    padding: 0.85rem 1rem;
  }

  .ms-internal-link-arrow {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 480px) {
  .ms-internal-link-icon {
    font-size: 1.25rem;
  }

  .ms-internal-link-text strong {
    font-size: 0.83rem;
  }

  .ms-internal-link-text small {
    font-size: 0.7rem;
  }
}

@media (hover: none) {
  .ms-internal-link:hover {
    transform: none;
  }
}