/* =============================================
   PyAutoGrader - Main Stylesheet
   Theme: Bold Modern - Light base, dark accents
   ============================================= */

/* --- Variables --- */
:root {
  /* Dark palette (hero, CTA, footer) */
  --bg-black:    #09090b;
  --bg-900:      #131315;
  --bg-800:      #1a1a1e;
  --bg-700:      #222226;

  /* Light palette (main content) */
  --bg-light:    #ffffff;
  --bg-light-alt:#f8f9fa;
  --bg-light-card:#ffffff;

  /* Brand greens */
  --emerald:     #34d399;
  --emerald-dark:#059669;
  --emerald-deeper:#047857;
  --emerald-glow:rgba(16, 185, 129, 0.08);
  --emerald-glow-strong: rgba(16, 185, 129, 0.18);
  --teal:        #2dd4bf;
  --teal-glow:   rgba(45, 212, 191, 0.10);

  /* Neutrals */
  --white:       #ffffff;
  --off-white:   #f8f9fa;
  --gray-100:    #f1f5f9;
  --gray-200:    #e2e8f0;
  --gray-300:    #cbd5e1;
  --gray-400:    #94a3b8;
  --gray-500:    #64748b;
  --gray-600:    #475569;
  --gray-700:    #334155;
  --gray-800:    #1e293b;
  --gray-900:    #0f172a;

  /* Text (light background) */
  --text:        #1e293b;
  --text-muted:  #64748b;
  --text-dim:    #94a3b8;

  /* Text (dark background) */
  --text-on-dark:      #fafafa;
  --text-on-dark-muted:rgba(255,255,255,0.65);
  --text-on-dark-dim:  rgba(255,255,255,0.4);

  /* Borders */
  --border:      #e2e8f0;
  --border-hover:rgba(5, 150, 105, 0.35);
  --border-dark: rgba(255,255,255,0.06);

  /* Misc */
  --radius:      10px;
  --radius-lg:   16px;
  --shadow:      0 4px 24px rgba(0,0,0,0.06);
  --shadow-lg:   0 8px 48px rgba(0,0,0,0.10);
  --transition:  0.25s ease;
  --font-body:   'Plus Jakarta Sans', system-ui, sans-serif;
  --font-mono:   'Fira Code', monospace;
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg-light);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--emerald-dark); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--emerald-deeper); }

/* --- Container --- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
}

/* --- Animations --- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes glow-pulse {
  0%, 100% { border-color: rgba(52, 211, 153, 0.2); box-shadow: 0 0 12px rgba(52, 211, 153, 0.06); }
  50% { border-color: rgba(52, 211, 153, 0.5); box-shadow: 0 0 20px rgba(52, 211, 153, 0.12); }
}

@keyframes subtle-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

/* =============================================
   NAVIGATION
   ============================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(9, 9, 11, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.logo-text {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.02em;
}

.logo-accent {
  color: var(--emerald);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.site-nav a {
  color: var(--text-muted);
  font-size: 0.88rem;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 8px;
  transition: all var(--transition);
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--white);
  background: rgba(255,255,255,0.06);
}

.btn-nav-cta {
  background: var(--emerald) !important;
  color: var(--bg-black) !important;
  font-weight: 700 !important;
  padding: 7px 18px !important;
  border-radius: 8px !important;
  margin-left: 8px;
}

.btn-nav-cta:hover {
  background: var(--emerald-dark) !important;
  box-shadow: 0 0 24px var(--emerald-glow-strong);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: all var(--transition);
}

/* =============================================
   BUTTONS
   ============================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  border: none;
}

.btn-primary {
  background: var(--emerald-dark);
  color: var(--white);
}
.btn-primary:hover {
  background: var(--emerald-deeper);
  color: var(--white);
  box-shadow: 0 4px 20px var(--emerald-glow-strong);
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--gray-300);
}
.btn-secondary:hover {
  border-color: var(--emerald-dark);
  color: var(--emerald-dark);
}

.btn-outline {
  background: transparent;
  color: var(--emerald-dark);
  border: 1.5px solid var(--emerald-dark);
}
.btn-outline:hover {
  background: var(--emerald-dark);
  color: var(--white);
  box-shadow: 0 4px 20px var(--emerald-glow-strong);
}

/* Dark-section button overrides */
.hero .btn-primary,
.landing-section--free .btn-primary,
.landing-section--cta .btn-primary {
  background: var(--emerald);
  color: var(--bg-black);
}
.hero .btn-primary:hover,
.landing-section--free .btn-primary:hover,
.landing-section--cta .btn-primary:hover {
  background: var(--emerald-dark);
  box-shadow: 0 0 32px rgba(52, 211, 153, 0.25);
}
.hero .btn-secondary,
.landing-section--cta .btn-secondary {
  background: rgba(255,255,255,0.05);
  color: rgba(255,255,255,0.65);
  border-color: rgba(255,255,255,0.15);
  backdrop-filter: blur(12px);
}
.hero .btn-secondary:hover,
.landing-section--cta .btn-secondary:hover {
  border-color: rgba(52, 211, 153, 0.4);
  color: var(--emerald);
  background: rgba(255,255,255,0.08);
}

/* =============================================
   HOME - HERO
   ============================================= */
.hero {
  background: var(--bg-black);
  padding: 100px 0 100px;
  position: relative;
  overflow: hidden;
}

/* Grid pattern overlay */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  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: 48px 48px;
  pointer-events: none;
}

/* Emerald glow */
.hero::after {
  content: '';
  position: absolute;
  top: 50%;
  right: 12%;
  transform: translate(0, -50%);
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--emerald-glow) 0%, transparent 70%);
  pointer-events: none;
  filter: blur(40px);
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-inner--landing {
  /* same as hero-inner, used on homepage */
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(52, 211, 153, 0.06);
  border: 1.5px solid rgba(52, 211, 153, 0.2);
  color: var(--emerald);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 20px;
  animation: glow-pulse 3s ease-in-out infinite;
}

.hero-tagline {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 12px;
  font-style: italic;
}

.hero-title {
  font-size: clamp(2.4rem, 4.5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--white);
  margin-bottom: 24px;
  animation: fadeInUp 0.6s ease both;
}

.hero-title .accent {
  color: var(--emerald);
}

.hero-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 500px;
  animation: fadeInUp 0.6s ease 0.15s both;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  animation: fadeInUp 0.6s ease 0.3s both;
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  width: 100%;
  max-width: 440px;
  backdrop-filter: blur(12px);
  animation: subtle-float 6s ease-in-out infinite;
}

.hero-card-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  background: rgba(255,255,255,0.03);
  border-bottom: 1px solid var(--border);
}

.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot.red { background: #ff5f57; }
.dot.yellow { background: #febc2e; }
.dot.green { background: #28c840; }

.hero-card pre {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: rgba(255,255,255,0.85);
  line-height: 1.7;
  overflow-x: auto;
  padding: 20px;
  margin: 0;
}

.hero-card .kw { color: #c792ea; }
.hero-card .fn { color: #82aaff; }
.hero-card .st { color: #c3e88d; }
.hero-card .cm { color: #546e7a; }
.hero-card .gr { color: var(--emerald); font-weight: 600; }

/* =============================================
   HOME - PRODUCTS SECTION (legacy, kept for compat)
   ============================================= */
.products-section {
  padding: 90px 0;
  background: var(--bg-light-alt);
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-eyebrow {
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--emerald);
  margin-bottom: 10px;
}

.section-title {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--gray-900);
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 540px;
  margin: 0 auto;
}

.product-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.product-card {
  background: var(--white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 40px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--emerald-dark), var(--teal));
  opacity: 0;
  transition: opacity var(--transition);
}

.product-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

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

.product-badge {
  display: inline-block;
  background: var(--emerald-glow);
  color: var(--emerald-dark);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 100px;
  border: 1px solid rgba(5,150,105,0.2);
  margin-bottom: 16px;
}

.product-card h2 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 10px;
  letter-spacing: -0.02em;
}

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

.product-features {
  list-style: none;
  margin-bottom: 28px;
}

.product-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.92rem;
  color: var(--gray-600);
  padding: 5px 0;
}

.product-features li::before {
  content: '\2713';
  color: var(--emerald);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}

/* =============================================
   PAGE HERO (inner pages)
   ============================================= */
.page-wrapper { min-height: 60vh; }

.page-hero {
  background: var(--bg-black);
  padding: 64px 0;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 50% 80% at 80% 50%, rgba(52,211,153,0.05) 0%, transparent 70%),
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 100% 100%, 48px 48px, 48px 48px;
}

.page-title {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.03em;
  position: relative;
}

.page-subtitle {
  color: rgba(255,255,255,0.65);
  margin-top: 10px;
  font-size: 1.05rem;
  position: relative;
}

.page-content {
  padding: 60px 24px;
  max-width: 800px;
}

.page-content h2 {
  color: var(--gray-900);
}

.page-content p {
  color: var(--text-muted);
}

/* =============================================
   DOCUMENTATION
   ============================================= */
.doc-wrapper {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: calc(100vh - 64px);
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 32px;
  gap: 48px;
}

.doc-sidebar {
  padding: 40px 0;
  border-right: 1px solid var(--gray-200);
  position: sticky;
  top: 64px;
  height: calc(100vh - 64px);
  overflow-y: auto;
}

.sidebar-header {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: 24px;
  padding-right: 24px;
}

.sidebar-section { margin-bottom: 28px; }

.sidebar-section-title {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--gray-900);
  display: block;
  margin-bottom: 8px;
  padding-right: 24px;
}

.sidebar-nav ul { list-style: none; }

.sidebar-nav a {
  display: block;
  font-size: 0.9rem;
  color: var(--text-muted);
  padding: 5px 12px 5px 0;
  border-radius: 6px;
  transition: all var(--transition);
  padding-right: 24px;
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
  color: var(--emerald-dark);
  font-weight: 600;
}

.doc-content {
  padding: 40px 0 80px;
  max-width: 960px;
}

.doc-breadcrumb {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.doc-breadcrumb a { color: var(--emerald-dark); }

.doc-content h1 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--gray-900);
  letter-spacing: -0.03em;
  margin-bottom: 8px;
}

.doc-content h2 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--gray-900);
  margin: 40px 0 12px;
  letter-spacing: -0.02em;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--gray-200);
}

.doc-content h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--gray-900);
  margin: 28px 0 8px;
}

.doc-content p { margin-bottom: 16px; color: var(--gray-600); }

.doc-content ul, .doc-content ol {
  margin: 0 0 16px 20px;
  color: var(--gray-600);
}

.doc-content li { margin-bottom: 6px; }

.doc-content code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--gray-100);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--emerald-deeper);
}

.doc-content pre {
  background: var(--bg-black);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius);
  padding: 20px 24px;
  overflow-x: auto;
  margin: 20px 0;
}

.doc-content pre code {
  background: none;
  color: rgba(255,255,255,0.9);
  font-size: 0.88rem;
  padding: 0;
}

.doc-content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 24px;
  font-size: 0.92rem;
}

.doc-content th {
  text-align: left;
  font-weight: 700;
  color: var(--gray-900);
  padding: 10px 14px;
  border-bottom: 2px solid var(--gray-300);
  white-space: nowrap;
}

.doc-content td {
  padding: 10px 14px;
  color: var(--gray-600);
  border-bottom: 1px solid var(--gray-200);
  vertical-align: top;
}

.doc-content tbody tr:hover {
  background: var(--gray-50);
}

.doc-content td code, .doc-content th code {
  font-size: 0.85rem;
}

.faq-section table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 24px;
  font-size: 0.92rem;
}

.faq-section th {
  text-align: left;
  font-weight: 700;
  color: var(--gray-900);
  padding: 10px 14px;
  border-bottom: 2px solid var(--gray-300);
  white-space: nowrap;
}

.faq-section td {
  padding: 10px 14px;
  color: var(--gray-600);
  border-bottom: 1px solid var(--gray-200);
  vertical-align: top;
}

.faq-section tbody tr:hover {
  background: var(--gray-50);
}

.doc-footer {
  display: flex;
  justify-content: space-between;
  margin-top: 60px;
  padding-top: 28px;
  border-top: 1px solid var(--gray-200);
}

.doc-nav-btn {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--emerald-dark);
  padding: 8px 0;
}

.doc-nav-btn.next { margin-left: auto; }

.doc-nav-btn:hover { color: var(--emerald-deeper); }

/* =============================================
   FEATURES PAGE - Test Type Categories
   ============================================= */
.ft-categories {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 960px;
  margin: 0 auto;
}

.ft-category {
  background: var(--white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition);
}

.ft-category:hover {
  border-color: var(--border-hover);
}

.ft-category-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  background: var(--emerald-glow);
  border-bottom: 1px solid rgba(5,150,105,0.10);
}

.ft-category-header h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--gray-900);
  margin: 0;
}

.ft-count {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--emerald-dark);
  background: rgba(5,150,105,0.10);
  padding: 3px 10px;
  border-radius: 20px;
  letter-spacing: 0.02em;
}

.ft-type-list {
  padding: 8px 24px 16px;
}

.ft-type {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 7px 0;
  border-bottom: 1px solid var(--gray-100);
  font-size: 0.9rem;
}

.ft-type:last-child {
  border-bottom: none;
}

.ft-type code {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--emerald-deeper);
  background: var(--emerald-glow);
  padding: 2px 8px;
  border-radius: 4px;
  white-space: nowrap;
  flex-shrink: 0;
  min-width: 200px;
}

.ft-type span {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.5;
}

/* Features page - Privacy grid */
.ft-privacy-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  max-width: 860px;
  margin: 0 auto;
}

.ft-privacy-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: var(--white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 24px;
  transition: all var(--transition);
}

.ft-privacy-item:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow);
}

.ft-privacy-icon {
  font-size: 1.6rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.ft-privacy-item h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 4px;
}

.ft-privacy-item p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin: 0;
}

@media (max-width: 900px) {
  .ft-privacy-grid { grid-template-columns: 1fr; }
  .ft-type { flex-direction: column; gap: 2px; }
  .ft-type code { min-width: auto; }
}

@media (max-width: 600px) {
  .ft-category-header { padding: 14px 16px; }
  .ft-type-list { padding: 8px 16px 12px; }
}

/* =============================================
   PRICING
   ============================================= */
.pricing-section { padding: 80px 0; }

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.pricing-card {
  background: var(--white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 36px;
  position: relative;
  transition: all var(--transition);
}

.pricing-card.featured {
  border-color: var(--emerald-dark);
  box-shadow: 0 0 0 4px var(--emerald-glow);
}

.pricing-card-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--emerald-dark);
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 3px 14px;
  border-radius: 100px;
  white-space: nowrap;
}

.pricing-tier {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.pricing-price {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--gray-900);
  letter-spacing: -0.04em;
  margin-bottom: 4px;
}

.pricing-price span {
  font-size: 1rem;
  font-weight: 400;
  color: var(--text-muted);
}

.pricing-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--gray-200);
}

.pricing-features { list-style: none; margin-bottom: 28px; }

.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-muted);
  padding: 5px 0;
}

.pricing-features li::before {
  content: '\2713';
  color: var(--emerald);
  font-weight: 700;
  flex-shrink: 0;
}

.pricing-features li.disabled { opacity: 0.4; }
.pricing-features li.disabled::before { content: '-'; color: var(--text-dim); }

/* =============================================
   FAQ
   ============================================= */
.faq-section { padding: 80px 0; max-width: 960px; margin: 0 auto; }

.faq-item {
  border-bottom: 1px solid var(--gray-200);
}

.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 20px 0;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-900);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.faq-question::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--emerald-dark);
  flex-shrink: 0;
  transition: transform var(--transition);
}

.faq-item.open .faq-question::after {
  transform: rotate(45deg);
}

.faq-answer {
  display: none;
  padding: 0 0 20px;
  color: var(--text-muted);
  line-height: 1.7;
}

.faq-item.open .faq-answer { display: block; }

/* =============================================
   ABOUT PAGE
   ============================================= */

/* Bio section - photo + text grid */
.about-bio {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 40px;
  align-items: start;
  max-width: 820px;
  margin: 0 auto;
}

.about-photo-wrap {
  position: sticky;
  top: 100px;
}

.about-photo {
  width: 200px;
  height: 240px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0,0,0,0.12), 0 1px 4px rgba(0,0,0,0.08);
}

.about-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

.about-photo-name {
  margin-top: 16px;
  text-align: center;
}

.about-photo-name h3 {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 2px;
}

.about-photo-role {
  font-size: 0.9rem;
  color: var(--emerald-dark);
  font-weight: 600;
}

.about-photo-university {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.about-photo-divider {
  width: 48px;
  height: 2px;
  background: linear-gradient(to right, var(--emerald), transparent);
  margin: 8px auto;
}

.about-origin-text p {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.85;
  margin-bottom: 16px;
}

.about-origin-divider {
  width: 48px;
  height: 2px;
  background: linear-gradient(to right, var(--emerald), transparent);
  margin: 24px 0;
}

.about-origin-bio p {
  font-size: 0.95rem;
  color: var(--gray-500);
  line-height: 1.75;
  margin-bottom: 14px;
}

/* Philosophy - minimal stacked cards */
.about-principles {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 620px;
  margin: 0 auto;
}

.about-principle {
  padding: 20px 24px;
  background: var(--white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-lg);
}

.about-principle h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 8px;
}

.about-principle p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin: 0;
}

/* Mastery - callout + flowing prose */
.about-mastery-callout {
  border-left: 3px solid var(--emerald);
  padding: 16px 24px;
  background: rgba(52, 211, 153, 0.04);
  border-radius: 0 var(--radius) var(--radius) 0;
  max-width: 720px;
  margin: 0 auto 28px;
}

.about-mastery-callout p {
  font-size: 1.05rem;
  color: var(--gray-700);
  line-height: 1.8;
  margin: 0;
  font-style: italic;
}

.about-mastery {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.about-mastery p {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.85;
  margin-bottom: 16px;
}

/* About page CTA */
.about-cta-text {
  font-size: 1.05rem;
  color: var(--text-on-dark-muted);
  margin-bottom: 28px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

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

@media (max-width: 900px) {
  .about-bio { grid-template-columns: 1fr; justify-items: center; }
  .about-photo-wrap { position: static; }
  .about-bio-text { text-align: center; }
  .about-origin-text { text-align: center; }
  .about-origin-bio { text-align: center; }
  .about-origin-divider { margin: 24px auto; }
}

/* =============================================
   DOWNLOAD PAGES
   ============================================= */
.dl-notice {
  max-width: 720px;
  margin: -20px auto 40px;
  text-align: center;
  padding: 14px 24px;
  background: var(--emerald-glow);
  border: 1px solid rgba(5,150,105,0.15);
  border-radius: var(--radius);
  font-size: 0.92rem;
  color: var(--gray-700);
}

.dl-notice strong {
  color: var(--emerald-dark);
  font-weight: 700;
}

.dl-card {
  background: var(--white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 32px;
  max-width: 560px;
  margin: 0 auto;
}

.dl-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.dl-card-header h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--gray-900);
  margin: 0;
}

.dl-card-icon {
  font-size: 1.6rem;
}

.dl-card > p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 20px;
  line-height: 1.6;
}

.dl-card .os-download-card {
  background: var(--bg-light-alt);
  margin: 0;
  max-width: none;
  text-align: center;
}

.dl-card .os-recommended-label,
.dl-card .os-other-label {
  text-align: center;
}

.dl-card .os-other-platforms {
  justify-content: center;
}

.dl-card .download-filename {
  text-align: center;
}

.tryit-card {
  background: var(--white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 32px;
  max-width: 560px;
  margin: 0 auto;
  text-align: center;
  transition: border-color var(--transition);
}

.tryit-card:hover {
  border-color: var(--border-hover);
}

.tryit-icon {
  font-size: 2rem;
  margin-bottom: 8px;
}

.tryit-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 16px;
}

.tryit-contents {
  list-style: none;
  padding: 0;
  margin: 0 0 20px;
  text-align: left;
  max-width: 320px;
  margin-left: auto;
  margin-right: auto;
}

.tryit-contents li {
  padding: 6px 0;
  font-size: 0.9rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.tryit-file-icon {
  font-size: 1rem;
  flex-shrink: 0;
}

.dl-companion-link {
  margin-top: 12px;
  text-align: center;
  font-size: 0.88rem;
}

.dl-companion-link a {
  color: var(--emerald-dark);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition);
}

.dl-companion-link a:hover {
  color: var(--emerald);
}

.dl-companion-link.dl-companion-disabled {
  color: var(--text-muted);
  font-weight: 600;
}

.dl-student-callout {
  display: flex;
  align-items: center;
  gap: 24px;
  max-width: 720px;
  margin: 0 auto;
  background: var(--white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
}

.dl-student-callout-icon {
  font-size: 2.4rem;
  flex-shrink: 0;
}

.dl-student-callout h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 4px;
}

.dl-student-callout p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 0 0 12px;
  line-height: 1.6;
}

.student-tips {
  max-width: 720px;
  margin: 0 auto;
}

.student-tips ul {
  list-style: none;
  padding: 0;
}

.student-tips li {
  padding: 12px 0;
  border-bottom: 1px solid var(--gray-100);
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
  display: flex;
  gap: 10px;
}

.student-tips li::before {
  content: '💡';
  flex-shrink: 0;
}

.student-tips li:last-child {
  border-bottom: none;
}

@media (max-width: 900px) {
  .tryit-card { padding: 24px; }
  .dl-student-callout { flex-direction: column; text-align: center; }
}

/* =============================================
   SERVER PAGE
   ============================================= */
.sv-intro {
  max-width: 720px;
  margin: 0 auto 48px;
  text-align: center;
}

.sv-intro p {
  font-size: 1.08rem;
  color: var(--text-muted);
  line-height: 1.8;
}

/* Quick Start */
.sv-quickstart {
  max-width: 720px;
  margin: 0 auto;
  background: var(--white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.sv-quickstart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  background: var(--bg-black);
}

.sv-quickstart-header h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--white);
  margin: 0;
}

.sv-badge {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--emerald);
  background: rgba(52,211,153,0.12);
  padding: 3px 10px;
  border-radius: 20px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.sv-steps {
  padding: 8px 24px 16px;
}

.sv-step {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 16px 0;
  border-bottom: 1px solid var(--gray-100);
}

.sv-step:last-child { border-bottom: none; }

.sv-step-num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--emerald-glow);
  color: var(--emerald-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.85rem;
  flex-shrink: 0;
  border: 1.5px solid rgba(5,150,105,0.2);
  margin-top: 2px;
}

.sv-step h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 2px;
}

.sv-step p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin: 0;
}

.sv-step code {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  background: var(--gray-100);
  padding: 1px 6px;
  border-radius: 4px;
  color: var(--gray-700);
}

/* Feature Grid */
.sv-features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  max-width: 960px;
  margin: 0 auto;
}

.sv-feature-card {
  background: var(--white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition);
}

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

.sv-feature-card--wide {
  grid-column: span 2;
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.sv-feature-icon {
  font-size: 1.6rem;
  margin-bottom: 10px;
  flex-shrink: 0;
}

.sv-feature-card--wide .sv-feature-icon {
  margin-bottom: 0;
  margin-top: 4px;
  font-size: 1.8rem;
}

.sv-feature-card h3 {
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 6px;
}

.sv-feature-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin: 0;
}

/* Callout */
.sv-callout {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  max-width: 720px;
  margin: 0 auto;
  background: var(--emerald-glow);
  border: 1.5px solid rgba(5,150,105,0.18);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
}

.sv-callout-icon {
  font-size: 1.8rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.sv-callout h3 {
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 6px;
}

.sv-callout p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin: 0;
}

/* Infrastructure Grid */
.sv-infra-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
  max-width: 960px;
  margin: 0 auto;
}

.sv-infra-section h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 16px;
}

.sv-infra-cards {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sv-infra-card {
  background: var(--white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 20px;
  transition: border-color var(--transition);
}

.sv-infra-card:hover {
  border-color: var(--border-hover);
}

.sv-infra-card--rec {
  border-color: rgba(5,150,105,0.3);
  background: var(--emerald-glow);
}

.sv-rec-badge {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--emerald-dark);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}

.sv-infra-card h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 4px;
}

.sv-infra-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin: 0;
}

.sv-infra-card code {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  background: var(--gray-100);
  padding: 1px 5px;
  border-radius: 3px;
  color: var(--gray-700);
}

/* Extras */
.sv-extras {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  max-width: 960px;
  margin: 0 auto;
}

.sv-extra {
  padding: 16px 20px;
  border-bottom: 2px solid var(--gray-100);
  transition: border-color var(--transition);
}

.sv-extra:hover {
  border-color: var(--emerald-dark);
}

.sv-extra strong {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 4px;
}

.sv-extra span {
  font-size: 0.84rem;
  color: var(--text-muted);
  line-height: 1.5;
}

@media (max-width: 900px) {
  .sv-features-grid { grid-template-columns: 1fr; }
  .sv-feature-card--wide { grid-column: span 1; flex-direction: column; }
  .sv-infra-grid { grid-template-columns: 1fr; gap: 32px; }
  .sv-extras { grid-template-columns: 1fr; }
  .sv-callout { flex-direction: column; }
}

@media (max-width: 600px) {
  .sv-quickstart-header { padding: 12px 16px; }
  .sv-steps { padding: 8px 16px 12px; }
}

/* =============================================
   CHANGELOG
   ============================================= */
.changelog-section { padding: 80px 0; max-width: 780px; margin: 0 auto; }

.changelog-entry {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 32px;
  padding: 36px 0;
  border-bottom: 1px solid var(--gray-200);
}

.changelog-meta { text-align: right; }

.changelog-version {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--gray-900);
  display: block;
  margin-bottom: 4px;
}

.changelog-date {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.changelog-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 2px 8px;
  border-radius: 4px;
  margin-top: 6px;
}

.changelog-tag.new { background: var(--emerald-glow); color: var(--emerald-dark); }
.changelog-tag.fix { background: rgba(59,130,246,0.08); color: #2563eb; }
.changelog-tag.breaking { background: rgba(239,68,68,0.08); color: #dc2626; }

.changelog-body h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 10px;
}

.changelog-body ul {
  list-style: none;
  color: var(--text-muted);
  font-size: 0.92rem;
}

.changelog-body ul li {
  padding: 4px 0 4px 16px;
  position: relative;
}

.changelog-body ul li::before {
  content: '-';
  position: absolute;
  left: 0;
  color: var(--text-dim);
}

/* =============================================
   STUDENT DOWNLOADS
   ============================================= */
.download-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 40px;
}

.download-card {
  background: var(--white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-align: center;
  transition: all var(--transition);
}

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

.download-icon {
  width: 56px;
  height: 56px;
  background: var(--emerald-glow);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 1.6rem;
}

.download-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 8px;
}

.download-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

/* =============================================
   ABOUT / CONTACT
   ============================================= */
.contact-form {
  max-width: 600px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius);
  background: var(--white);
  color: var(--text);
  transition: border-color var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--emerald-dark);
  box-shadow: 0 0 0 3px var(--emerald-glow);
}

.form-group textarea { resize: vertical; min-height: 120px; }

/* =============================================
   BADGES / CALLOUTS
   ============================================= */
.callout {
  border-left: 3px solid var(--emerald-dark);
  background: var(--emerald-glow);
  padding: 14px 18px;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: 20px 0;
  font-size: 0.92rem;
  color: var(--gray-800);
}

.badge-coming-soon {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(251,191,36,0.1);
  color: #b45309;
  border: 1px solid rgba(251,191,36,0.25);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 100px;
}

/* =============================================
   FOOTER
   ============================================= */
.site-footer {
  background: var(--bg-black);
  border-top: 1px solid var(--border-dark);
  padding: 56px 0 0;
}

.footer-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--border-dark);
}

.footer-brand {
  flex-shrink: 0;
  min-width: 180px;
}

.footer-brand .logo-text { color: var(--white); }

.footer-tagline {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.4);
  margin-top: 10px;
  line-height: 1.6;
}

.footer-links {
  display: flex;
  gap: 48px;
}

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

.footer-col-title {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.35);
  margin-bottom: 4px;
}

.footer-col a {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.6);
  transition: color var(--transition);
}

.footer-col a:hover { color: var(--emerald); }

.footer-bottom {
  padding: 18px 0;
}

.footer-bottom span {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.25);
}

/* =============================================
   UTILITIES
   ============================================= */
.text-center { text-align: center; }
.mt-4 { margin-top: 16px; }
.mt-8 { margin-top: 32px; }
.mb-4 { margin-bottom: 16px; }
.placeholder-notice {
  text-align: center;
  padding: 80px 20px;
  color: var(--text-muted);
}
.placeholder-notice .big-icon { font-size: 3rem; margin-bottom: 16px; }
.placeholder-notice h2 { color: var(--gray-900); margin-bottom: 8px; }

/* =============================================
   NEW LAYOUT UTILITIES
   ============================================= */
.content-section {
  margin-bottom: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--gray-200);
}
.content-section:last-child { border-bottom: none; }
.content-section h2 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--gray-900);
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.content-section h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 8px;
}
.content-section p { color: var(--text-muted); margin-bottom: 14px; }

.feature-list { list-style: none; margin: 0 0 20px; }
.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.93rem;
  color: var(--text-muted);
  padding: 5px 0;
}
.feature-list li::before {
  content: '\2713';
  color: var(--emerald);
  font-weight: 700;
  flex-shrink: 0;
}

.section-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.subsection {
  background: var(--gray-100);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-top: 16px;
}

.product-hero-badge {
  display: inline-block;
  background: var(--emerald-glow);
  color: var(--emerald-dark);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 100px;
  border: 1px solid rgba(52,211,153,0.2);
  margin-bottom: 14px;
}

.page-intro {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 32px;
  line-height: 1.7;
}

.faq-group-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--emerald-dark);
  margin: 36px 0 8px;
}
.faq-group-label:first-child { margin-top: 0; }

.pricing-footnote {
  text-align: center;
  margin-top: 36px;
  font-size: 0.9rem;
  color: var(--text-muted);
}
.pricing-footnote a { color: var(--emerald-dark); }

.pricing-card--disabled {
  opacity: 0.65;
  cursor: default;
}

.btn-sm { padding: 8px 18px; font-size: 0.88rem; }

.download-buttons {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 16px;
}

.form-note {
  margin-top: 20px;
  font-size: 0.85rem;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.6;
}

.about-content .content-section { max-width: 680px; }

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .product-cards { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; }
  .footer-links { gap: 32px; }
  .doc-wrapper { grid-template-columns: 1fr; }
  .doc-sidebar { display: none; }
  .changelog-entry { grid-template-columns: 1fr; }
  .changelog-meta { text-align: left; }
  .workflow-grid { grid-template-columns: repeat(2, 1fr); }
  .test-grid { grid-template-columns: repeat(2, 1fr); }
  .server-showcase { grid-template-columns: 1fr; }
  .roster-grid { grid-template-columns: 1fr; }
  .diff-cards { grid-template-columns: 1fr; }
}

@media (max-width: 700px) {
  .footer-inner { flex-direction: column; gap: 32px; }
  .footer-links { flex-wrap: wrap; gap: 28px; }
}

@media (max-width: 600px) {
  .site-nav { display: none; }
  .nav-toggle { display: flex; }
  .site-nav.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 64px; left: 0; right: 0; bottom: 0;
    background: var(--bg-900);
    padding: 32px 24px;
    gap: 8px;
    z-index: 99;
  }
  .site-nav.open a { font-size: 1.1rem; padding: 12px; }
  .hero { padding: 60px 0 50px; }
  .pricing-grid { grid-template-columns: 1fr; }
  .workflow-grid { grid-template-columns: 1fr 1fr; }
  .test-grid { grid-template-columns: 1fr; }
  .results-grid { grid-template-columns: 1fr; }
  .batch-steps { grid-template-columns: 1fr; }
}

/* =============================================
   OS DOWNLOAD CARD
   ============================================= */
.os-download-card {
  background: var(--gray-100);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin: 24px 0;
  max-width: 520px;
}

.os-recommended { margin-bottom: 20px; }

.os-recommended-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.btn-download {
  font-size: 1rem;
  padding: 14px 28px;
  gap: 10px;
}

.download-filename {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 8px;
}

.os-other-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 10px;
  padding-top: 16px;
  border-top: 1px solid var(--gray-200);
}

.os-other-platforms {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.btn-disabled {
  opacity: 0.5;
  pointer-events: none;
}

.coming-soon-inline {
  font-size: 0.7rem;
  font-weight: 700;
  background: rgba(251,191,36,0.1);
  color: #b45309;
  padding: 2px 6px;
  border-radius: 4px;
  margin-left: 4px;
}

/* =============================================
   WORKFLOW DIAGRAM
   ============================================= */
.workflow-diagram {
  margin: 28px 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

/* =============================================
   STEP LIST
   ============================================= */
.step-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 20px;
}

.step-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.step-number {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  background: var(--emerald-dark);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  font-weight: 700;
  margin-top: 2px;
}

.step-body h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 4px;
}

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

/* =============================================
   LEGACY SECTION
   ============================================= */
.legacy-section {
  padding-top: 8px;
  margin-top: 0;
}

.legacy-text {
  font-size: 0.88rem;
  color: var(--text-muted) !important;
}

.legacy-text a { color: var(--emerald-dark); }

/* =============================================
   LANDING PAGE SECTIONS
   ============================================= */
.landing-section {
  padding: 80px 0;
}

.landing-section--alt {
  background: var(--bg-light-alt);
}

/* --- Workflow Grid (How It Works) --- */
.workflow-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}

/* Connecting line */
.workflow-grid::before {
  content: '';
  position: absolute;
  top: 36px;
  left: 48px;
  right: 48px;
  height: 2px;
  background: linear-gradient(90deg, var(--emerald-dark), var(--teal), var(--emerald-dark));
  opacity: 0.25;
  z-index: 0;
}

.workflow-step {
  text-align: center;
  padding: 24px 16px;
  position: relative;
  z-index: 1;
}

.workflow-number {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--white);
  color: var(--emerald-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
  font-weight: 800;
  font-size: 1.15rem;
  border: 2px solid var(--emerald-dark);
  box-shadow: 0 0 16px var(--emerald-glow);
  position: relative;
}

.workflow-step h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 6px;
}

.workflow-step p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* --- Differentiator Cards --- */
.diff-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 800px;
  margin: 0 auto;
}

.diff-card {
  background: var(--white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition);
}

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

.diff-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.diff-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 8px;
}

.diff-card p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* --- Results Grid --- */
.results-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.result-card {
  background: var(--white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 24px;
}

.result-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 6px;
}

.result-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin: 0;
}

.result-note {
  display: block;
  font-size: 0.82rem;
  color: var(--emerald-dark);
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--gray-200);
}

.result-card--notification {
  border-style: dashed;
  border-color: var(--gray-300);
}

.results-notification-header {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin: 28px 0 12px;
}

/* --- Test Types Grid --- */
.test-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.test-category {
  background: var(--emerald-glow);
  border-radius: var(--radius);
  padding: 18px 20px;
  border: 1px solid rgba(5,150,105,0.12);
}

.test-category h4 {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--emerald-dark);
  margin-bottom: 4px;
}

.test-category p {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin: 0;
}

.test-footer {
  text-align: center;
  margin-top: 24px;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.test-footer a {
  color: var(--emerald-dark);
  font-weight: 600;
}

/* --- Server Showcase --- */
.server-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}

.server-features {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.server-feature-card {
  background: var(--white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 16px 20px;
  transition: all var(--transition);
}

.server-feature-card:hover {
  border-color: var(--border-hover);
}

.server-feature-card h4 {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 4px;
}

.server-feature-card p {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin: 0;
}

/* --- Screenshot Images --- */
.screenshot-wrap {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0,0,0,0.12), 0 1px 4px rgba(0,0,0,0.08);
}

.screenshot-wrap--wide {
  width: 80vw;
  max-width: 1600px;
  margin-left: 50%;
  transform: translateX(-50%);
}

.screenshot-img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
}

.screenshot-caption {
  text-align: center;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 10px 0;
  background: var(--gray-100);
  border-bottom: 1px solid var(--gray-300);
}

.screenshot-caption + .screenshot-img {
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* --- GUI Showcase (side-by-side screenshots) --- */
.gui-showcase {
  display: grid;
  grid-template-columns: 1392fr 786fr;
  gap: 24px;
  margin: 40px auto 0;
  width: 80vw;
  max-width: 1600px;
  margin-left: 50%;
  transform: translateX(-50%);
}

.gui-showcase .screenshot-img {
  border-radius: 0;
}

@media (max-width: 768px) {
  .gui-showcase {
    grid-template-columns: 1fr;
    max-width: 560px;
  }
  .gui-showcase .screenshot-img {
    object-fit: contain;
  }
}

/* --- Analytics Preview (Server Section) --- */
.analytics-preview {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #0f1923;
  box-shadow: 0 8px 32px rgba(0,0,0,0.25), 0 2px 8px rgba(0,0,0,0.15);
  margin-top: 24px;
}

.analytics-preview-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  background: #162231;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.analytics-preview-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.12);
}

.analytics-preview-dot:nth-child(1) { background: #ef4444; }
.analytics-preview-dot:nth-child(2) { background: #eab308; }
.analytics-preview-dot:nth-child(3) { background: #22c55e; }

.analytics-preview-title {
  font-size: 0.72rem;
  font-weight: 600;
  color: rgba(255,255,255,0.5);
  margin-left: 8px;
  letter-spacing: 0.03em;
}

.analytics-preview-body {
  padding: 20px;
}

.analytics-stat-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}

.analytics-stat {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 8px;
  padding: 14px 10px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.analytics-stat-value {
  font-size: 1.35rem;
  font-weight: 800;
  color: #e2e8f0;
  font-family: var(--font-mono);
}

.analytics-stat-label {
  font-size: 0.65rem;
  color: rgba(255,255,255,0.4);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
}

.analytics-charts-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.analytics-chart-block {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 8px;
  padding: 14px;
}

.analytics-chart-title {
  font-size: 0.68rem;
  font-weight: 600;
  color: rgba(255,255,255,0.45);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: block;
  margin-bottom: 12px;
}

/* Score Distribution Histogram */
.analytics-histogram {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  height: 72px;
}

.analytics-bar {
  flex: 1;
  background: #0d9488;
  border-radius: 3px 3px 0 0;
  height: var(--bar-h);
  min-height: 4px;
  transition: opacity 0.2s;
}

/* Assignment Difficulty Bars */
.analytics-difficulty {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.analytics-diff-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.analytics-diff-label {
  font-size: 0.65rem;
  color: rgba(255,255,255,0.4);
  font-family: var(--font-mono);
  width: 36px;
  flex-shrink: 0;
}

.analytics-diff-bar-wrap {
  flex: 1;
  height: 8px;
  background: rgba(255,255,255,0.04);
  border-radius: 4px;
  overflow: hidden;
}

.analytics-diff-bar {
  height: 100%;
  border-radius: 4px;
  transition: width 0.4s ease;
}

.analytics-diff--easy   { background: #22c55e; }
.analytics-diff--medium { background: #eab308; }
.analytics-diff--hard   { background: #ef4444; }

/* Server showcase + analytics responsive */
@media (max-width: 900px) {
  .server-showcase {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .analytics-stat-row {
    grid-template-columns: repeat(2, 1fr);
  }
  .analytics-charts-row {
    grid-template-columns: 1fr;
  }
  .analytics-stat-value {
    font-size: 1.1rem;
  }
}

/* --- Roster Grid --- */
.roster-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.roster-card {
  background: var(--white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 28px;
  text-align: center;
  transition: all var(--transition);
}

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

.roster-icon {
  font-size: 1.8rem;
  margin-bottom: 12px;
}

.roster-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 6px;
}

.roster-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin: 0;
}

/* --- Batch Grading Steps --- */
.batch-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 720px;
  margin: 0 auto;
}

.batch-step {
  text-align: center;
  background: var(--white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 24px 16px;
}

.batch-step-icon {
  font-size: 1.6rem;
  margin-bottom: 10px;
}

.batch-step h3 {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 4px;
}

.batch-step p {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin: 0;
}

/* --- Batch Safety Callout --- */
.batch-safety-callout {
  max-width: 720px;
  margin: 28px auto 0;
  background: var(--white);
  border: 1.5px solid var(--gray-200);
  border-left: 3px solid var(--emerald);
  border-radius: var(--radius);
  padding: 20px 24px;
  text-align: left;
}

.batch-safety-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.batch-safety-icon {
  font-size: 1.2rem;
  flex-shrink: 0;
}

.batch-safety-header h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--gray-900);
  margin: 0;
}

.batch-safety-callout > p {
  font-size: 0.86rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin: 0;
}

.batch-safety-callout code {
  font-size: 0.82rem;
  background: var(--gray-100);
  padding: 1px 5px;
  border-radius: 4px;
  color: var(--gray-700);
}

.batch-safety-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--gray-100);
  gap: 12px;
}

.batch-safety-note {
  font-size: 0.78rem;
  color: var(--text-dim);
  font-style: italic;
}

.batch-safety-link {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--emerald-dark);
  white-space: nowrap;
  flex-shrink: 0;
}

.batch-safety-link:hover {
  color: var(--emerald-deeper);
}

@media (max-width: 600px) {
  .batch-safety-footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
}

/* --- Free. Always. Callout --- */
.landing-section--free {
  background: var(--bg-black);
  padding: 72px 0;
  position: relative;
  overflow: hidden;
}

.landing-section--free::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--emerald-glow) 0%, transparent 70%);
  pointer-events: none;
  filter: blur(60px);
}

.free-headline {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--emerald);
  letter-spacing: -0.03em;
  margin-bottom: 12px;
  position: relative;
}

.free-subtext {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.7);
  margin-bottom: 8px;
  position: relative;
}

.free-why {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.4);
  font-style: italic;
  position: relative;
}

/* --- Bottom CTA --- */
.landing-section--cta {
  background: var(--bg-black);
  padding: 72px 0;
}

.cta-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.03em;
  margin-bottom: 10px;
}

.cta-subtitle {
  color: rgba(255,255,255,0.65);
  margin-bottom: 28px;
  font-size: 1.05rem;
}

.cta-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.roadmap-teaser {
  border-top: 1px solid var(--border-dark);
  padding-top: 24px;
  max-width: 480px;
  margin: 0 auto;
}

.roadmap-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.3);
  display: block;
  margin-bottom: 6px;
}

.roadmap-teaser p {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.5);
  margin: 0;
}

/* =============================================
   NEW COMPONENTS (accessibility + launch polish)
   ============================================= */

/* --- Skip to content (a11y) --- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
  z-index: 1000;
}

.skip-link:focus {
  position: fixed;
  left: 16px;
  top: 16px;
  width: auto;
  height: auto;
  padding: 10px 18px;
  background: var(--emerald-dark);
  color: var(--white);
  border-radius: var(--radius);
  font-weight: 700;
  text-decoration: none;
  outline: 3px solid var(--white);
  box-shadow: var(--shadow-lg);
}

/* --- "Start Here" pill with subtle pulse --- */
.start-here-pill {
  position: relative;
  display: inline-block;
  background: linear-gradient(135deg, var(--emerald) 0%, var(--emerald-deeper) 100%);
  color: var(--white);
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  padding: 4px 11px;
  border-radius: 999px;
  margin-left: 12px;
  text-transform: uppercase;
  vertical-align: middle;
  box-shadow: 0 4px 14px rgba(5, 150, 105, 0.32);
}

.start-here-pill::before {
  content: "";
  position: absolute;
  inset: -3px;
  border-radius: 999px;
  border: 2px solid var(--emerald);
  opacity: 0;
  animation: start-here-pulse 2.2s ease-out infinite;
  pointer-events: none;
}

@keyframes start-here-pulse {
  0%   { transform: scale(1);   opacity: 0.55; }
  70%  { transform: scale(1.5); opacity: 0;    }
  100% { transform: scale(1.5); opacity: 0;    }
}

@media (prefers-reduced-motion: reduce) {
  .start-here-pill::before { animation: none; }
}

/* --- Social Proof Band --- */
.social-proof-band {
  position: relative;
  padding: 48px 0;
  background: linear-gradient(180deg, var(--bg-light-alt) 0%, var(--bg-light) 100%);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}

.social-proof-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 15% 50%, rgba(52, 211, 153, 0.08) 0%, transparent 35%),
    radial-gradient(circle at 85% 50%, rgba(52, 211, 153, 0.06) 0%, transparent 35%);
  pointer-events: none;
}

.social-proof-inner {
  position: relative;
  display: flex;
  gap: 28px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
  text-align: left;
}

.social-proof-avatar-wrap {
  position: relative;
  flex-shrink: 0;
}

.social-proof-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.12),
              0 0 0 3px var(--white),
              0 0 0 5px var(--emerald);
  display: block;
}

.social-proof-avatar-wrap::after {
  content: "";
  position: absolute;
  bottom: 4px;
  right: 4px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--emerald);
  border: 2px solid var(--white);
  box-shadow: 0 0 12px rgba(52, 211, 153, 0.5);
}

.social-proof-text {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-width: 520px;
}

.social-proof-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--emerald-deeper);
  margin: 0;
}

.social-proof-eyebrow::before {
  content: "\2713";
  color: var(--emerald-dark);
  font-size: 0.82rem;
}

.social-proof-headline {
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--text);
  margin: 0;
  line-height: 1.4;
}

.social-proof-attribution {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin: 0;
}

.social-proof-logo-slot {
  display: none;
  align-items: center;
  padding-left: 24px;
  margin-left: 4px;
  border-left: 1px solid var(--border);
}

.social-proof-logo-slot img {
  max-height: 48px;
  width: auto;
}

@media (max-width: 640px) {
  .social-proof-inner {
    flex-direction: column;
    gap: 18px;
    text-align: center;
  }
  .social-proof-text { align-items: center; }
  .social-proof-logo-slot {
    padding-left: 0;
    margin-left: 0;
    padding-top: 18px;
    border-left: none;
    border-top: 1px solid var(--border);
    width: 100%;
    justify-content: center;
  }
}

/* --- Comparison Table (PASS/FAIL grading aesthetic) --- */
.comparison-wrap {
  max-width: 960px;
  margin: 56px auto 0;
  overflow-x: auto;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 60px rgba(15, 23, 42, 0.08), 0 2px 8px rgba(15, 23, 42, 0.04);
  background: var(--white);
  border: 1px solid var(--border);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 620px;
}

.comparison-table thead th {
  padding: 20px 24px;
  text-align: left;
  background: var(--bg-light-alt);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  border-bottom: 2px solid var(--border);
  font-family: var(--font-mono);
}

.comparison-table thead th.comparison-us {
  position: relative;
  color: var(--emerald-deeper);
  background: linear-gradient(180deg, rgba(52, 211, 153, 0.14) 0%, rgba(52, 211, 153, 0.04) 100%);
}

.comparison-table thead th.comparison-us::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background: var(--emerald);
}

.comparison-header-brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: none;
}

.comparison-header-brand::before {
  content: "\2605";
  font-size: 0.9rem;
  color: var(--emerald);
}

.comparison-table tbody tr {
  transition: background var(--transition);
}

.comparison-table tbody tr:hover {
  background: rgba(52, 211, 153, 0.02);
}

.comparison-table tbody td {
  padding: 18px 24px;
  font-size: 0.95rem;
  color: var(--text);
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  line-height: 1.55;
}

.comparison-table tbody td.comparison-us-cell {
  background: rgba(52, 211, 153, 0.04);
  border-left: 1px solid rgba(52, 211, 153, 0.18);
  border-right: 1px solid rgba(52, 211, 153, 0.18);
}

.comparison-table tbody tr:last-child td { border-bottom: none; }
.comparison-table tbody tr:last-child td.comparison-us-cell { border-bottom-left-radius: var(--radius-lg); border-bottom-right-radius: var(--radius-lg); }

.comparison-row-label {
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
  font-size: 0.9rem;
  letter-spacing: 0.01em;
}

.comparison-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 3px 9px;
  border-radius: 4px;
  margin-right: 10px;
  margin-bottom: 4px;
  vertical-align: middle;
  line-height: 1.2;
}

.comparison-badge--pass {
  background: rgba(5, 150, 105, 0.12);
  color: var(--emerald-deeper);
  border: 1px solid rgba(5, 150, 105, 0.25);
}

.comparison-badge--pass::before {
  content: "\2713";
  font-size: 0.85rem;
  font-weight: 900;
}

.comparison-badge--fail {
  background: rgba(100, 116, 139, 0.08);
  color: var(--gray-500);
  border: 1px solid rgba(100, 116, 139, 0.2);
}

.comparison-badge--fail::before {
  content: "\2717";
  font-size: 0.85rem;
  font-weight: 900;
}

.comparison-value {
  display: block;
  margin-top: 4px;
  color: var(--text);
  font-size: 0.92rem;
}

.comparison-table tbody td:not(.comparison-us-cell) .comparison-value {
  color: var(--text-muted);
}

/* --- 404 page (terminal / grading-failure aesthetic) --- */
.not-found-section {
  background:
    radial-gradient(ellipse at top, rgba(52, 211, 153, 0.08) 0%, transparent 55%),
    linear-gradient(180deg, #0a0e1a 0%, #111725 100%);
  color: var(--text-on-dark);
  padding: 88px 0 96px;
  min-height: calc(100vh - 200px);
  display: flex;
  align-items: center;
}

.not-found-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 56px;
  align-items: center;
}

.not-found-terminal {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(52, 211, 153, 0.12);
  backdrop-filter: blur(10px);
  animation: not-found-terminal-in 0.7s cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

@keyframes not-found-terminal-in {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.not-found-terminal-chrome {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.not-found-terminal-chrome .dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}

.not-found-terminal-tab {
  margin-left: 14px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 0.04em;
}

.not-found-terminal-body {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.88);
  padding: 24px 28px 28px;
  margin: 0;
  white-space: pre;
  overflow-x: auto;
}

.not-found-terminal-body .cm { color: #546e7a; }

.not-found-mark {
  display: inline-block;
  width: 1.2em;
  font-weight: 800;
  text-align: center;
}

.not-found-mark--fail { color: #f87171; }
.not-found-mark--skip { color: rgba(255, 255, 255, 0.35); }

.not-found-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  padding: 1px 8px;
  border-radius: 3px;
  margin-left: 6px;
}

.not-found-tag--fail {
  color: #fca5a5;
  background: rgba(248, 113, 113, 0.14);
  border: 1px solid rgba(248, 113, 113, 0.3);
}

.not-found-tag--skip {
  color: rgba(255, 255, 255, 0.55);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.not-found-score {
  color: #f87171;
  font-weight: 700;
}

.not-found-copy {
  animation: not-found-copy-in 0.7s cubic-bezier(0.2, 0.8, 0.2, 1) 0.15s both;
}

@keyframes not-found-copy-in {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.not-found-eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--emerald);
  padding: 5px 12px;
  border-radius: 4px;
  background: rgba(52, 211, 153, 0.1);
  border: 1px solid rgba(52, 211, 153, 0.25);
  margin-bottom: 22px;
}

.not-found-title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  color: var(--text-on-dark);
  margin-bottom: 16px;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.not-found-subtitle {
  color: rgba(255, 255, 255, 0.7);
  font-size: 1.08rem;
  line-height: 1.6;
  max-width: 440px;
  margin: 0 0 32px;
}

.not-found-links {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.not-found-links .btn-primary {
  background: var(--emerald);
  color: #0a0e1a;
  border-color: var(--emerald);
}

.not-found-links .btn-primary:hover {
  background: var(--emerald-dark);
  border-color: var(--emerald-dark);
  color: var(--white);
}

.not-found-links .btn-secondary {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-on-dark);
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.not-found-links .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(52, 211, 153, 0.5);
  color: var(--emerald);
}

@media (max-width: 900px) {
  .not-found-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .not-found-copy { order: -1; }
  .not-found-section { padding: 64px 0 72px; min-height: 0; }
}

/* --- Hero tertiary link --- */
.hero-tertiary {
  margin-top: 18px;
  font-size: 0.92rem;
  animation: fadeInUp 0.6s ease 0.45s both;
}

.hero-tertiary a {
  color: rgba(255, 255, 255, 0.6);
  font-weight: 500;
  text-decoration: none;
  padding: 4px 0;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  border-bottom: 1px solid rgba(52, 211, 153, 0.25);
  transition: color var(--transition), border-color var(--transition), gap var(--transition);
}

.hero-tertiary a:hover {
  color: var(--emerald);
  border-bottom-color: var(--emerald);
  gap: 8px;
}