/* Shared styles for Lumo360 landing pages. Tokens match index.html. */
  :root {
    --ink-900: #0D1F35; --ink-800: #1A3252; --ink-700: #1E4A7A; --ink-600: #2060A8;
    --ink-500: #3178C6; --ink-400: #5B9BD5; --ink-300: #93BFEA; --ink-200: #C5DDEF;
    --ink-100: #E8F2FA; --ink-50: #F4F8FC;
    --neutral-900: #1A1D23; --neutral-700: #3D4450; --neutral-500: #6B7280;
    --neutral-300: #B0B8C4; --neutral-200: #D8DCE3; --neutral-100: #EFF1F4; --neutral-50: #F9FAFB;
    --white: #FFFFFF; --accent-teal: #1A8A7A; --accent-teal-light: #E4F5F2;
    --font-display: 'Archivo', system-ui, sans-serif;
    --font-body: 'DM Sans', system-ui, sans-serif;
    --radius-card: 16px; --radius-pill: 100px;
    --border-default: 1px solid #D8DCE3;
  }
  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
  html { font-size: 15px; scroll-behavior: smooth; }
  body {
    background: var(--neutral-50); color: var(--neutral-900);
    font-family: var(--font-body); line-height: 1.6;
    -webkit-font-smoothing: antialiased; overflow-x: hidden;
  }
  .page { max-width: 1160px; margin: 0 auto; padding: 0 48px; }
  @media (max-width: 768px) { .page { padding: 0 20px; } }
  a { color: var(--ink-600); }

  /* NAV */
  .nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    background: rgba(249,250,251,0.92); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
    border-bottom: var(--border-default); height: 56px;
  }
  .nav .page { display: flex; align-items: center; justify-content: space-between; height: 100%; }
  .nav-left { display: flex; align-items: center; gap: 10px; text-decoration: none; }
  .nav-wordmark { font-family: var(--font-body); font-size: 20px; font-weight: 600; color: var(--ink-900); letter-spacing: -0.01em; line-height: 1; }
  .nav-wordmark span { color: var(--ink-500); }
  .nav-links { display: flex; align-items: center; gap: 32px; list-style: none; }
  .nav-links a { font-size: 13px; color: var(--neutral-500); text-decoration: none; font-weight: 500; letter-spacing: 0.01em; transition: color 0.2s; }
  .nav-links a:hover { color: var(--ink-700); }
  .nav-cta {
    display: inline-flex; align-items: center; background: var(--ink-700); color: var(--white);
    font-family: var(--font-body); font-size: 13px; font-weight: 600; padding: 8px 18px;
    border-radius: 10px; text-decoration: none; letter-spacing: -0.01em; transition: background 0.2s;
  }
  .nav-cta:hover { background: var(--ink-800); }
  .nav-toggle { display: none; background: none; border: none; cursor: pointer; width: 36px; height: 36px; padding: 0; align-items: center; justify-content: center; }
  .nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
    content: ''; display: block; width: 20px; height: 2px; background: var(--ink-900); border-radius: 2px; transition: transform 0.2s, opacity 0.2s;
  }
  .nav-toggle span { position: relative; }
  .nav-toggle span::before { position: absolute; top: -6px; }
  .nav-toggle span::after { position: absolute; top: 6px; }
  .nav-toggle.open span { background: transparent; }
  .nav-toggle.open span::before { transform: translateY(6px) rotate(45deg); }
  .nav-toggle.open span::after { transform: translateY(-6px) rotate(-45deg); }
  @media (max-width: 768px) {
    .nav-links {
      display: none; position: absolute; top: 56px; left: 0; right: 0;
      flex-direction: column; align-items: stretch; gap: 0; background: var(--white);
      border-bottom: var(--border-default); padding: 8px 20px 16px;
    }
    .nav-links.open { display: flex; }
    .nav-links a { display: block; padding: 12px 0; border-bottom: 1px solid var(--neutral-100); font-size: 14px; }
    .nav-toggle { display: flex; }
  }

  /* HERO */
  .hero { padding: 144px 0 88px; position: relative; border-bottom: var(--border-default); }
  .hero::before {
    content: ''; position: absolute; inset: 0;
    background:
      radial-gradient(ellipse 70% 55% at 65% 25%, rgba(49,120,198,0.08) 0%, transparent 70%),
      radial-gradient(ellipse 50% 45% at 25% 75%, rgba(32,96,168,0.04) 0%, transparent 60%);
    pointer-events: none;
  }
  .hero .page { position: relative; z-index: 1; }
  .crumbs { font-size: 12px; color: var(--neutral-500); margin-bottom: 28px; }
  .crumbs a { color: var(--neutral-500); text-decoration: none; }
  .crumbs a:hover { color: var(--ink-700); }
  .hero-kicker, .section-label {
    font-size: 11px; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase;
    color: var(--ink-500); margin-bottom: 20px; display: flex; align-items: center; gap: 8px;
  }
  .hero-kicker::before, .section-label::before { content: ''; width: 24px; height: 1.5px; background: var(--ink-400); display: inline-block; }
  .hero h1 {
    font-family: var(--font-display); font-weight: 600; font-size: clamp(32px, 4.2vw, 52px);
    line-height: 1.1; letter-spacing: -0.034em; color: var(--ink-900); margin-bottom: 24px; max-width: 820px;
  }
  .hero h1 em { font-style: normal; color: var(--ink-500); }
  .hero-sub { font-size: 18px; color: var(--neutral-700); line-height: 1.7; max-width: 640px; margin-bottom: 36px; }
  .hero-actions { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
  .btn-primary {
    display: inline-flex; align-items: center; gap: 8px; background: var(--ink-700); color: var(--white);
    font-family: var(--font-body); font-size: 14px; font-weight: 600; padding: 12px 24px;
    border-radius: 10px; border: none; cursor: pointer; text-decoration: none; letter-spacing: -0.01em;
    transition: background 0.2s, transform 0.15s;
  }
  .btn-primary:hover { background: var(--ink-800); transform: translateY(-1px); }
  .btn-secondary {
    display: inline-flex; align-items: center; background: transparent; color: var(--ink-700);
    font-family: var(--font-body); font-size: 14px; font-weight: 500; padding: 12px 20px;
    border-radius: 10px; border: 1.5px solid var(--ink-300); cursor: pointer; text-decoration: none; transition: border-color 0.2s;
  }
  .btn-secondary:hover { border-color: var(--ink-400); }

  /* SECTIONS */
  section { padding: 88px 0; }
  section + section { border-top: var(--border-default); }
  .section-title {
    font-family: var(--font-display); font-weight: 600; font-size: clamp(26px, 3vw, 38px);
    line-height: 1.15; letter-spacing: -0.03em; color: var(--ink-900); margin-bottom: 14px; max-width: 760px;
  }
  .section-sub { color: var(--neutral-700); line-height: 1.75; max-width: 640px; font-size: 16px; }
  .section-head { margin-bottom: 48px; }
  .bg-white { background: var(--white); }
  sup a { text-decoration: none; font-size: 0.75em; font-weight: 600; }

  /* PROBLEM CARDS */
  .problem-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
  .problem-card { border-radius: var(--radius-card); padding: 36px 32px; border: var(--border-default); background: var(--neutral-50); }
  .pc-label { font-size: 11px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 14px; color: var(--neutral-500); }
  .problem-card h3 { font-family: var(--font-display); font-weight: 600; font-size: 21px; color: var(--ink-900); letter-spacing: -0.025em; margin-bottom: 18px; line-height: 1.25; }
  .plist { list-style: none; display: flex; flex-direction: column; gap: 10px; }
  .plist li { font-size: 14.5px; color: var(--neutral-700); line-height: 1.6; padding-left: 22px; position: relative; }
  .plist li::before { content: '✕'; position: absolute; left: 0; top: 0; color: #B91C1C; font-size: 12px; font-weight: 700; }
  .pull {
    margin-top: 48px; padding: 28px 32px; border-left: 3px solid var(--ink-500); background: var(--ink-50);
    border-radius: 0 12px 12px 0; max-width: 820px;
  }
  .pull p { font-family: var(--font-display); font-size: clamp(18px, 2vw, 22px); font-weight: 500; letter-spacing: -0.02em; color: var(--ink-900); line-height: 1.4; }
  .pull cite { display: block; margin-top: 10px; font-style: normal; font-size: 13px; color: var(--neutral-500); }
  @media (max-width: 768px) { .problem-grid { grid-template-columns: 1fr; } .problem-card { padding: 28px 22px; } }

  /* COMPARISON TABLE */
  .compare { width: 100%; border-collapse: separate; border-spacing: 0; background: var(--white); border: var(--border-default); border-radius: var(--radius-card); overflow: hidden; }
  .compare th, .compare td { text-align: left; vertical-align: top; padding: 18px 22px; font-size: 14.5px; line-height: 1.6; border-bottom: var(--border-default); }
  .compare tr:last-child td { border-bottom: none; }
  .compare thead th { font-size: 11px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--neutral-500); background: var(--neutral-50); }
  .compare thead th.us { color: var(--ink-600); background: var(--ink-100); }
  .compare td.dim { width: 22%; font-weight: 600; color: var(--ink-900); }
  .compare td.old { color: var(--neutral-700); width: 36%; }
  .compare td.us { color: var(--ink-900); background: var(--ink-50); }
  .compare-note { font-size: 13px; color: var(--neutral-500); margin-top: 16px; max-width: 760px; }
  @media (max-width: 720px) {
    .compare thead { display: none; }
    .compare, .compare tbody, .compare tr, .compare td { display: block; width: 100% !important; }
    .compare tr { border-bottom: var(--border-default); }
    .compare tr:last-child { border-bottom: none; }
    .compare td { border-bottom: none; padding: 6px 18px; }
    .compare td.dim { padding-top: 18px; }
    .compare td.us { padding-bottom: 18px; }
    .compare td.old::before { content: attr(data-l) ': '; font-weight: 600; color: var(--neutral-500); }
    .compare td.us::before { content: attr(data-l) ': '; font-weight: 600; color: var(--ink-600); }
  }

  /* CHECKLIST (dark) */
  .dark { background: var(--ink-900); border-top: none !important; position: relative; overflow: hidden; }
  .dark + section { border-top: none !important; }
  .dark::before { content: ''; position: absolute; top: -180px; right: -180px; width: 520px; height: 520px; border-radius: 50%; border: 1px solid rgba(147,191,234,0.06); pointer-events: none; }
  .dark .page { position: relative; z-index: 1; }
  .dark .section-label { color: var(--ink-400); }
  .dark .section-title { color: var(--white); }
  .dark .section-sub { color: var(--ink-300); }
  .checks { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .check { background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.07); border-radius: var(--radius-card); padding: 28px 26px; }
  .check-num { font-size: 11px; font-weight: 600; letter-spacing: 0.12em; color: var(--ink-400); margin-bottom: 12px; }
  .check h3 { font-family: var(--font-display); font-size: 19px; font-weight: 600; color: var(--white); letter-spacing: -0.02em; margin-bottom: 8px; line-height: 1.3; }
  .check p { font-size: 14px; color: var(--ink-300); line-height: 1.7; }
  .check p a { color: var(--ink-200); }
  @media (max-width: 768px) { .checks { grid-template-columns: 1fr; } }

  /* STEPS */
  .steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
  .step-card { background: var(--white); border: var(--border-default); border-radius: var(--radius-card); padding: 32px 28px; }
  .step-num { font-size: 11px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-400); margin-bottom: 16px; }
  .step-card h3 { font-family: var(--font-display); font-weight: 600; font-size: 19px; color: var(--ink-900); letter-spacing: -0.025em; margin-bottom: 10px; line-height: 1.25; }
  .step-card p { font-size: 14px; color: var(--neutral-700); line-height: 1.75; }
  @media (max-width: 768px) { .steps { grid-template-columns: 1fr; } }

  /* PROSE + FAQ */
  .prose { max-width: 720px; }
  .prose p { font-size: 16px; color: var(--neutral-700); line-height: 1.8; margin-bottom: 16px; }
  .faq { max-width: 760px; }
  .faq details { border-bottom: var(--border-default); padding: 20px 0; }
  .faq details:first-child { border-top: var(--border-default); }
  .faq summary { cursor: pointer; list-style: none; font-family: var(--font-display); font-size: 17px; font-weight: 600; color: var(--ink-900); letter-spacing: -0.015em; display: flex; justify-content: space-between; gap: 16px; }
  .faq summary::-webkit-details-marker { display: none; }
  .faq summary::after { content: '+'; color: var(--ink-500); font-weight: 500; font-size: 20px; line-height: 1; }
  .faq details[open] summary::after { content: '−'; }
  .faq details p { margin-top: 12px; font-size: 15px; color: var(--neutral-700); line-height: 1.75; }

  /* CTA */
  .cta-block { background: var(--ink-900); border-radius: 20px; padding: 64px 48px; text-align: center; position: relative; overflow: hidden; }
  .cta-block::before { content: ''; position: absolute; top: 50%; left: 50%; width: 440px; height: 440px; transform: translate(-50%, -50%); border-radius: 50%; border: 1px solid rgba(147,191,234,0.06); pointer-events: none; }
  .cta-block .section-title { color: var(--white); margin: 0 auto 14px; position: relative; }
  .cta-block .section-title em { font-style: normal; color: var(--ink-300); }
  .cta-sub { font-size: 15px; color: var(--ink-300); line-height: 1.7; max-width: 480px; margin: 0 auto 28px; position: relative; }
  .btn-primary-light {
    display: inline-flex; align-items: center; gap: 8px; background: var(--white); color: var(--ink-900);
    font-family: var(--font-body); font-size: 14px; font-weight: 600; padding: 12px 24px; border-radius: 10px;
    border: none; cursor: pointer; text-decoration: none; transition: transform 0.15s; position: relative;
  }
  .btn-primary-light:hover { transform: translateY(-1px); }
  @media (max-width: 768px) { .cta-block { padding: 44px 22px; } }

  /* SOURCES */
  .sources { padding: 48px 0 64px; }
  .sources h2 { font-size: 12px; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--neutral-500); margin-bottom: 14px; }
  .sources ol { padding-left: 20px; max-width: 820px; }
  .sources li { font-size: 13px; color: var(--neutral-500); line-height: 1.7; margin-bottom: 6px; overflow-wrap: anywhere; }

  /* FOOTER */
  .footer { border-top: var(--border-default); padding: 40px 0 32px; }
  .footer-links { display: flex; flex-wrap: wrap; gap: 10px 24px; margin-bottom: 24px; }
  .footer-links a { font-size: 13px; color: var(--neutral-500); text-decoration: none; }
  .footer-links a:hover { color: var(--ink-700); }
  .footer-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
  .footer-left { display: flex; align-items: center; gap: 10px; }
  .footer-copy { font-size: 12px; color: var(--neutral-500); }
  .footer-tagline { font-family: var(--font-display); font-weight: 500; font-size: 13px; letter-spacing: -0.01em; color: var(--neutral-500); }
  @media (max-width: 768px) { .footer-row { flex-direction: column; text-align: center; } .footer-links { justify-content: center; } }

  /* MODAL */
  #demo-modal { display: none; position: fixed; inset: 0; z-index: 200; align-items: center; justify-content: center; }
  .modal-backdrop { position: absolute; inset: 0; background: rgba(13,31,53,0.55); backdrop-filter: blur(4px); }
  .modal-card { position: relative; z-index: 1; background: var(--white); border-radius: 20px; padding: 44px 36px; max-width: 420px; width: 90%; box-shadow: 0 24px 80px rgba(13,31,53,0.18); text-align: center; }
  .modal-card h3 { font-family: var(--font-display); font-size: 26px; color: var(--ink-900); margin-bottom: 10px; font-weight: 600; letter-spacing: -0.028em; }
  .modal-card p { font-size: 14px; color: var(--neutral-500); line-height: 1.7; }
  .modal-card input { width: 100%; padding: 13px 16px; border: 1.5px solid var(--neutral-200); border-radius: 10px; font-family: var(--font-body); font-size: 15px; color: var(--ink-900); outline: none; margin: 24px 0 12px; }
  .modal-card input:focus { border-color: var(--ink-400); }
  .modal-card .btn-primary { width: 100%; justify-content: center; }
  .modal-close { position: absolute; top: 14px; right: 16px; background: none; border: none; cursor: pointer; color: var(--neutral-500); font-size: 20px; line-height: 1; }
  #demo-error { display: none; color: #B91C1C; font-size: 12px; margin-top: 10px; }
  #demo-success { display: none; }

/* Extra components for comparison and guide pages */
.plist.good li::before { content: '✓'; color: var(--ink-600); }
.disclaimer { font-size: 12.5px; color: var(--neutral-500); line-height: 1.7; max-width: 820px; margin-top: 20px; }
.qa { display: grid; gap: 16px; max-width: 900px; }
.qa-item { background: var(--white); border: var(--border-default); border-radius: var(--radius-card); padding: 26px 28px; }
.qa-item h3 { font-family: var(--font-display); font-size: 18px; font-weight: 600; color: var(--ink-900); letter-spacing: -0.02em; line-height: 1.35; margin-bottom: 10px; }
.qa-item .ask { font-size: 12px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--neutral-500); margin-bottom: 8px; }
.qa-item p { font-size: 14.5px; color: var(--neutral-700); line-height: 1.75; }
.qa-item p + p { margin-top: 8px; }
.qa-item .ours { margin-top: 12px; padding: 14px 16px; background: var(--ink-50); border-left: 3px solid var(--ink-500); border-radius: 0 10px 10px 0; color: var(--ink-900); }
.related { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.related a { display: block; background: var(--white); border: var(--border-default); border-radius: 14px; padding: 20px 22px; text-decoration: none; color: var(--ink-900); font-weight: 600; font-size: 15px; transition: border-color 0.2s, transform 0.2s; }
.related a span { display: block; font-weight: 400; font-size: 13px; color: var(--neutral-500); margin-top: 4px; }
.related a:hover { border-color: var(--ink-300); transform: translateY(-2px); }
@media (max-width: 768px) { .related { grid-template-columns: 1fr; } .qa-item { padding: 22px 20px; } }