/* ——— Linear-inspired refinement layer ———
     Dark surface, subtle gradient glows, Inter throughout,
     bento grids, gentle radii, restrained copy. */

  :root {
    --bg-0: #08090A;
    --bg-1: #0E0F11;
    --bg-2: #14161A;
    --bg-3: #1A1D22;
    --line: #1F2227;
    --line-2: #2A2E34;
    --text: #F4F4F5;
    --text-2: #B4B7BD;
    --muted: #71757D;
    --dim: #4A4E55;
    --accent: #E24329;
    --accent-soft: rgba(226, 67, 41, 0.12);
    --accent-line: rgba(226, 67, 41, 0.32);
    --radius-sm: 6px;
    --radius: 10px;
    --radius-lg: 14px;
    /* Fonts inherit from site.css — Space Grotesk display + Inter body */
  }

  body { background: var(--bg-0); font-family: var(--ff-body); letter-spacing: -0.005em; }
  ::selection { background: var(--accent); color: #fff; }

  .ln-shell { max-width: 1200px; margin: 0 auto; padding: 0 28px; }
  @media (max-width: 720px) { .ln-shell { padding: 0 20px; } }

  /* Section rhythm — Linear-style generous, but not empty */
  .ln-sec { padding: 120px 0; position: relative; }
  .ln-sec + .ln-sec { border-top: 1px solid var(--line); }
  @media (max-width: 720px) { .ln-sec { padding: 72px 0; } }

  /* Section header pattern */
  .ln-sec-head { max-width: 720px; margin: 0 0 56px; }
  .ln-sec-head .pill { display: inline-flex; align-items: center; gap: 8px; padding: 5px 11px; border: 1px solid var(--line-2); border-radius: 999px; font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--text-2); letter-spacing: 0.04em; margin-bottom: 22px; background: var(--bg-1); }
  .ln-sec-head .pill .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
  .ln-sec-head h2 { font-family: var(--ff-display); font-weight: 600; font-size: clamp(32px, 4vw, 52px); letter-spacing: -0.025em; line-height: 1.05; margin: 0 0 18px; color: var(--text); }
  .ln-sec-head p { font-size: 17px; line-height: 1.55; color: var(--text-2); margin: 0; max-width: 56ch; letter-spacing: -0.005em; }

  /* ——— HERO ——— */
  .ln-hero { position: relative; padding: 120px 0 100px; overflow: hidden; border-bottom: 1px solid var(--line); }
  .ln-hero-glow { position: absolute; inset: 0; pointer-events: none; z-index: 0;
    background:
      radial-gradient(ellipse 80% 60% at 50% 0%, rgba(226, 67, 41, 0.18) 0%, transparent 55%),
      radial-gradient(ellipse 50% 40% at 80% 30%, rgba(226, 67, 41, 0.08) 0%, transparent 60%),
      radial-gradient(ellipse 40% 35% at 20% 50%, rgba(245, 165, 36, 0.04) 0%, transparent 60%);
  }
  .ln-hero-grid { position: absolute; inset: 0; opacity: 0.4; pointer-events: none; z-index: 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: 64px 64px;
    mask-image: radial-gradient(ellipse 70% 80% at 50% 30%, #000 30%, transparent 100%);
  }
  .ln-hero-inner { position: relative; z-index: 1; }
  .ln-hero .meta { font-family: 'JetBrains Mono', monospace; font-size: 11.5px; letter-spacing: 0.06em; color: var(--muted); margin-bottom: 28px; display: inline-flex; align-items: center; gap: 10px; padding: 6px 12px; border: 1px solid var(--line-2); border-radius: 999px; background: rgba(14,15,17,0.6); backdrop-filter: blur(8px); }
  .ln-hero .meta .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px var(--accent); }
  .ln-hero h1 { font-family: var(--ff-display); font-weight: 600; font-size: clamp(48px, 6.5vw, 92px); letter-spacing: -0.04em; line-height: 1.0; margin: 0 0 28px; max-width: 16ch; color: var(--text); }
  .ln-hero h1 .grad { background: linear-gradient(135deg, var(--text) 0%, var(--text-2) 60%, var(--accent) 100%); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
  .ln-hero .lede { font-size: 19px; line-height: 1.55; color: var(--text-2); max-width: 58ch; margin: 0 0 40px; letter-spacing: -0.005em; }
  .ln-hero .actions { display: flex; gap: 12px; flex-wrap: wrap; }
  .ln-btn { display: inline-flex; align-items: center; gap: 10px; padding: 11px 18px; border-radius: 8px; font-family: var(--ff-display); font-weight: 500; font-size: 14px; letter-spacing: -0.005em; text-transform: none; transition: all 0.15s ease; border: 1px solid transparent; cursor: pointer; }
  .ln-btn-primary { background: var(--text); color: var(--bg-0); border-color: var(--text); }
  .ln-btn-primary:hover { background: #fff; border-color: #fff; transform: translateY(-1px); box-shadow: 0 8px 24px rgba(255,255,255,0.08); }
  .ln-btn-ghost { background: transparent; color: var(--text); border-color: var(--line-2); }
  .ln-btn-ghost:hover { background: var(--bg-2); border-color: var(--text-2); }
  .ln-btn .arr { font-size: 14px; opacity: 0.7; transition: transform 0.15s; }
  .ln-btn:hover .arr { transform: translateX(2px); opacity: 1; }

  /* Hero stats strip */
  .ln-hero-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; margin-top: 80px; padding-top: 40px; border-top: 1px solid var(--line); position: relative; z-index: 1; }
  .ln-hero-stats .stat .v { font-family: var(--ff-display); font-weight: 600; font-size: 28px; letter-spacing: -0.02em; color: var(--text); line-height: 1; }
  .ln-hero-stats .stat .v .u { font-size: 14px; color: var(--muted); margin-left: 4px; font-weight: 500; }
  .ln-hero-stats .stat .l { font-size: 13px; color: var(--muted); margin-top: 8px; letter-spacing: -0.005em; }
  @media (max-width: 720px) { .ln-hero-stats { grid-template-columns: 1fr 1fr; gap: 24px; } }

  /* ——— PROBLEM ROW ——— */
  .ln-prob { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; }
  .ln-prob .cell { background: var(--bg-1); padding: 36px 32px; transition: background 0.2s; }
  .ln-prob .cell:hover { background: var(--bg-2); }
  .ln-prob .cell .ix { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--accent); letter-spacing: 0.06em; margin-bottom: 14px; }
  .ln-prob .cell h3 { font-family: var(--ff-display); font-weight: 600; font-size: 19px; letter-spacing: -0.015em; margin: 0 0 10px; color: var(--text); line-height: 1.3; }
  .ln-prob .cell p { font-size: 14.5px; line-height: 1.55; color: var(--text-2); margin: 0; max-width: 44ch; }
  @media (max-width: 720px) { .ln-prob { grid-template-columns: 1fr; } }

  /* ——— BENTO grid (Before/After + KPIs) ——— */
  .ln-bento { display: grid; grid-template-columns: 1.1fr 1fr; gap: 16px; }
  .ln-tile { background: var(--bg-1); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 36px 32px; position: relative; overflow: hidden; }
  .ln-tile.glow::before { content: ''; position: absolute; top: -50%; right: -30%; width: 80%; height: 100%; background: radial-gradient(ellipse, var(--accent-soft) 0%, transparent 70%); pointer-events: none; }
  .ln-tile-head { display: flex; align-items: center; gap: 10px; margin-bottom: 22px; position: relative; }
  .ln-tile-head .tag { font-family: 'JetBrains Mono', monospace; font-size: 10.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); padding: 4px 9px; border: 1px solid var(--line-2); border-radius: 999px; background: var(--bg-0); }
  .ln-tile-head .tag.accent { color: var(--accent); border-color: var(--accent-line); background: var(--accent-soft); }
  .ln-tile h3 { font-family: var(--ff-display); font-weight: 600; font-size: 22px; letter-spacing: -0.02em; margin: 0 0 18px; color: var(--text); position: relative; }
  .ln-tile ul { list-style: none; padding: 0; margin: 0; position: relative; }
  .ln-tile li { display: flex; gap: 12px; align-items: flex-start; padding: 11px 0; border-top: 1px solid var(--line); font-size: 14.5px; line-height: 1.5; color: var(--text-2); }
  .ln-tile li:first-child { border-top: 0; }
  .ln-tile li .ic { flex-shrink: 0; width: 16px; height: 16px; border-radius: 50%; display: grid; place-items: center; margin-top: 2px; font-size: 10px; }
  .ln-tile.before li .ic { background: var(--bg-3); color: var(--dim); }
  .ln-tile.after li .ic { background: var(--accent-soft); color: var(--accent); }
  @media (max-width: 900px) { .ln-bento { grid-template-columns: 1fr; } }

  /* ——— INCIDENT log card ——— */
  .ln-log { background: var(--bg-1); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; }
  .ln-log-head { display: flex; justify-content: space-between; align-items: center; padding: 18px 24px; border-bottom: 1px solid var(--line); background: var(--bg-0); flex-wrap: wrap; gap: 12px; }
  .ln-log-head .l { display: flex; align-items: center; gap: 12px; font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--text-2); }
  .ln-log-head .l .rec { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); animation: ln-pulse 1.6s ease-in-out infinite; }
  @keyframes ln-pulse { 0%,100% { opacity: 1; box-shadow: 0 0 0 0 rgba(226,67,41,0.5); } 50% { opacity: 0.6; box-shadow: 0 0 0 8px rgba(226,67,41,0); } }
  .ln-log-head .r { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--muted); letter-spacing: 0.04em; }
  .ln-log-body { padding: 8px 24px; }
  .ln-log-row { display: grid; grid-template-columns: 92px 90px 1fr 100px; gap: 18px; padding: 14px 0; border-bottom: 1px solid var(--line); font-family: 'JetBrains Mono', monospace; font-size: 12.5px; align-items: center; }
  .ln-log-row:last-child { border-bottom: 0; }
  .ln-log-row .t { color: var(--accent); }
  .ln-log-row .sys { font-size: 10.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); padding: 3px 8px; border: 1px solid var(--line-2); border-radius: 999px; text-align: center; background: var(--bg-0); }
  .ln-log-row .txt { color: var(--text); font-family: var(--ff-display); font-size: 14px; letter-spacing: -0.005em; }
  .ln-log-row .txt b { color: var(--text); font-weight: 600; }
  .ln-log-row .pri { font-size: 10.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); text-align: right; font-weight: 500; }
  .ln-log-row .pri.crit { color: var(--accent); }
  @media (max-width: 720px) { .ln-log-row { grid-template-columns: 80px 1fr; gap: 8px 14px; } .ln-log-row .sys, .ln-log-row .pri { display: none; } }

  /* ——— SIM frame ——— */
  .ln-sim { background: var(--bg-1); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; box-shadow: 0 24px 64px rgba(0,0,0,0.4); }
  .ln-sim-cap { padding: 14px 22px; background: var(--bg-0); border-bottom: 1px solid var(--line); display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; font-family: 'JetBrains Mono', monospace; font-size: 11.5px; letter-spacing: 0.04em; color: var(--text-2); }
  .ln-sim-cap .left b { color: var(--accent); font-weight: 500; }
  .ln-sim-cap .right { color: var(--muted); }
  .ln-sim-cap .right .dot { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: #4ADE80; margin-right: 8px; vertical-align: middle; box-shadow: 0 0 8px #4ADE80; }

  /* ——— KPI grid (Linear bento style) ——— */
  .ln-kpi { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
  .ln-kpi .cell { background: var(--bg-1); border: 1px solid var(--line); border-radius: var(--radius); padding: 32px 28px; transition: all 0.2s; position: relative; overflow: hidden; }
  .ln-kpi .cell:hover { border-color: var(--line-2); transform: translateY(-2px); }
  .ln-kpi .cell::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px; background: linear-gradient(90deg, transparent, var(--accent-line), transparent); opacity: 0.5; }
  .ln-kpi .v { font-family: var(--ff-display); font-weight: 600; font-size: 44px; letter-spacing: -0.03em; line-height: 1; color: var(--text); }
  .ln-kpi .v .u { font-family: 'JetBrains Mono', monospace; font-size: 16px; color: var(--accent); margin-left: 4px; font-weight: 500; }
  .ln-kpi .l { font-size: 13.5px; color: var(--text-2); margin-top: 14px; letter-spacing: -0.005em; }
  .ln-kpi .d { font-size: 12.5px; color: var(--muted); margin-top: 6px; letter-spacing: -0.005em; line-height: 1.5; }
  @media (max-width: 900px) { .ln-kpi { grid-template-columns: 1fr 1fr; } }
  @media (max-width: 480px) { .ln-kpi { grid-template-columns: 1fr; } }

  /* ——— Capabilities grid (3+1 bento) ——— */
  .ln-caps { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .ln-caps .cap { background: var(--bg-1); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 32px; transition: all 0.2s; position: relative; overflow: hidden; }
  .ln-caps .cap:hover { border-color: var(--line-2); }
  .ln-caps .cap .head { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
  .ln-caps .cap .head .num { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--accent); letter-spacing: 0.06em; padding: 3px 8px; border: 1px solid var(--accent-line); border-radius: 999px; background: var(--accent-soft); }
  .ln-caps .cap .head .tag { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--muted); letter-spacing: 0.04em; }
  .ln-caps .cap h3 { font-family: var(--ff-display); font-weight: 600; font-size: 22px; letter-spacing: -0.02em; margin: 0 0 12px; color: var(--text); line-height: 1.25; }
  .ln-caps .cap p { font-size: 14.5px; line-height: 1.6; color: var(--text-2); margin: 0; max-width: 50ch; }
  @media (max-width: 720px) { .ln-caps { grid-template-columns: 1fr; } }

  /* ——— Deploy timeline ——— */
  .ln-deploy { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; position: relative; }
  .ln-deploy .step { background: var(--bg-1); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; position: relative; }
  .ln-deploy .step .h { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
  .ln-deploy .step .h .num { font-family: 'JetBrains Mono', monospace; font-size: 11.5px; color: var(--accent); letter-spacing: 0.06em; font-weight: 500; }
  .ln-deploy .step .h .dur { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--muted); letter-spacing: 0.04em; }
  .ln-deploy .step h4 { font-family: var(--ff-display); font-weight: 600; font-size: 17px; letter-spacing: -0.015em; margin: 0 0 10px; color: var(--text); line-height: 1.3; }
  .ln-deploy .step p { font-size: 14px; line-height: 1.55; color: var(--text-2); margin: 0; }
  @media (max-width: 900px) { .ln-deploy { grid-template-columns: 1fr; } }

  /* ——— CTA section ——— */
  .ln-cta { position: relative; background: var(--bg-1); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 64px 56px; overflow: hidden; }
  .ln-cta::before { content: ''; position: absolute; inset: 0; background:
    radial-gradient(ellipse 60% 80% at 100% 50%, rgba(226,67,41,0.12) 0%, transparent 60%),
    radial-gradient(ellipse 40% 60% at 0% 0%, rgba(226,67,41,0.06) 0%, transparent 60%);
    pointer-events: none;
  }
  .ln-cta-inner { position: relative; display: grid; grid-template-columns: 1.6fr 1fr; gap: 56px; align-items: center; }
  .ln-cta h2 { font-family: var(--ff-display); font-weight: 600; font-size: clamp(32px, 4vw, 48px); letter-spacing: -0.03em; line-height: 1.05; margin: 14px 0 16px; max-width: 18ch; color: var(--text); }
  .ln-cta p { font-size: 16px; line-height: 1.6; color: var(--text-2); margin: 0; max-width: 56ch; }
  .ln-cta .actions { display: flex; flex-direction: column; gap: 8px; }
  .ln-cta .actions .ln-btn { justify-content: space-between; padding: 14px 18px; font-size: 14px; }
  @media (max-width: 900px) { .ln-cta { padding: 44px 28px; } .ln-cta-inner { grid-template-columns: 1fr; gap: 32px; } }

  /* Next link */
  .ln-next { display: flex; justify-content: space-between; align-items: center; padding: 28px 0; border-top: 1px solid var(--line); margin-top: 56px; transition: all 0.15s; }
  .ln-next:hover { padding-left: 6px; }
  .ln-next:hover .n { color: var(--accent); }
  .ln-next .l { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--muted); letter-spacing: 0.06em; text-transform: uppercase; }
  .ln-next .n { font-family: var(--ff-display); font-weight: 600; font-size: 22px; letter-spacing: -0.02em; color: var(--text); transition: color 0.15s; margin-top: 6px; }
  .ln-next .arr { font-family: 'JetBrains Mono', monospace; font-size: 13px; color: var(--accent); }

  /* eyebrow accent */
  .ln-eyebrow { display: inline-flex; align-items: center; gap: 8px; font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--accent); letter-spacing: 0.06em; }
  .ln-eyebrow .bar { width: 18px; height: 1px; background: var(--accent); display: inline-block; }

  /* Narrative-synced sim (matches Perimeter page) */
  .sim-shell-wrap { border: 1px solid var(--line); background: var(--bg-1); border-radius: var(--radius-lg); overflow: hidden; box-shadow: 0 24px 64px rgba(0,0,0,0.4); }
  .sim-narrator { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 1px; background: var(--line); border-bottom: 1px solid var(--line); }
  .sim-narrator .phase { background: var(--bg-0); padding: 22px 24px; position: relative; cursor: pointer; transition: background 0.15s; }
  .sim-narrator .phase:hover { background: var(--bg-2); }
  .sim-narrator .phase.active { background: var(--bg-2); }
  .sim-narrator .phase.active::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px; background: var(--accent); }
  .sim-narrator .phase .pnum { font-family: 'JetBrains Mono', monospace; font-size: 10px; color: var(--dim); letter-spacing: 0.22em; margin-bottom: 6px; }
  .sim-narrator .phase.active .pnum { color: var(--accent); }
  .sim-narrator .phase .pname { font-family: var(--ff-display); font-weight: 600; font-size: 20px; letter-spacing: -0.015em; color: var(--text-2); margin-bottom: 6px; }
  .sim-narrator .phase.active .pname { color: var(--text); }
  .sim-narrator .phase .pdesc { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--muted); letter-spacing: 0.04em; line-height: 1.45; }
  .sim-narrator .phase .phase-range { position: absolute; top: 18px; right: 20px; font-family: 'JetBrains Mono', monospace; font-size: 10px; color: var(--dim); letter-spacing: 0.08em; }
  @media (max-width: 900px) { .sim-narrator { grid-template-columns: 1fr; } }

  .sim-caption-bar { padding: 16px 24px; background: var(--bg-0); border-bottom: 1px solid var(--line); display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap; }
  .sim-caption-bar .cap-left { font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--text-2); letter-spacing: 0.04em; }
  .sim-caption-bar .cap-left b { color: var(--accent); font-weight: 500; }
  .sim-caption-bar .cap-right { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--muted); letter-spacing: 0.14em; text-transform: uppercase; }
  .sim-caption-bar .cap-right .sc-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: #4ADE80; margin-right: 8px; vertical-align: middle; box-shadow: 0 0 8px #4ADE80; animation: ln-pulse 2s ease-in-out infinite; }