:root {
  --ink: #071a2f;
  --ink-2: #0c2745;
  --blue: #2f7fd3;
  --blue-bright: #58a6ff;
  --cyan: #82d8ee;
  --paper: #f5f7fa;
  --white: #ffffff;
  --muted: #617186;
  --line: #dbe3ec;
  --green: #2b8b78;
  --shell: min(1180px, calc(100% - 40px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "DM Sans", system-ui, sans-serif;
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; }
.shell { width: var(--shell); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; top: 12px; left: 12px; transform: translateY(-150%); background: var(--white); padding: 10px 16px; border-radius: 6px; z-index: 100; }
.skip-link:focus { transform: none; }

.site-header { position: sticky; top: 0; z-index: 50; background: rgba(7,26,47,.92); backdrop-filter: blur(14px); color: var(--white); border-bottom: 1px solid rgba(255,255,255,.08); }
.nav-wrap { min-height: 78px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 11px; font-family: "Manrope", sans-serif; font-weight: 800; letter-spacing: -.02em; text-decoration: none; }
.brand-mark { width: 35px; height: 35px; display: grid; place-items: center; border-radius: 9px; background: var(--blue); color: var(--white); font-size: .9rem; }
.site-nav { display: flex; align-items: center; gap: 30px; }
.site-nav a { color: #dce8f5; text-decoration: none; font-size: .92rem; font-weight: 600; }
.site-nav a:hover, .site-nav a:focus-visible { color: var(--blue-bright); }
.menu-toggle { display: none; background: transparent; border: 0; width: 44px; height: 44px; padding: 11px; }
.menu-toggle span:not(.sr-only) { display: block; height: 2px; background: var(--white); margin: 6px 0; }

.hero { min-height: 760px; display: grid; grid-template-columns: 1.08fr .92fr; gap: 70px; align-items: center; padding-block: 90px 105px; }
.eyebrow { margin: 0 0 18px; color: var(--blue); font-size: .78rem; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; }
h1, h2, h3 { font-family: "Manrope", sans-serif; line-height: 1.08; letter-spacing: -.045em; }
h1 { max-width: 760px; margin: 0; font-size: clamp(3.2rem, 6vw, 6.35rem); }
h2 { margin: 0; font-size: clamp(2.45rem, 4vw, 4.6rem); }
h3 { margin: 0; font-size: 1.62rem; }
.hero-lede { max-width: 670px; margin: 30px 0 0; color: #40526a; font-size: 1.25rem; line-height: 1.65; }
.hero-actions, .paper-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; margin-top: 36px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 52px; padding: 0 24px; border: 1px solid transparent; border-radius: 6px; font-weight: 700; text-decoration: none; transition: transform .2s ease, background .2s ease, color .2s ease; }
.button:hover, .button:focus-visible { transform: translateY(-2px); }
.button.primary { background: var(--blue); color: var(--white); box-shadow: 0 12px 35px rgba(47,127,211,.22); }
.button.primary:hover { background: #246ebc; }
.button.secondary { border-color: #b5c4d4; color: var(--ink); background: rgba(255,255,255,.45); }
.button.secondary.light { border-color: rgba(255,255,255,.35); color: var(--white); background: rgba(255,255,255,.04); }

.hero-visual { position: relative; min-height: 560px; border-radius: 26px; overflow: hidden; background: radial-gradient(circle at 70% 18%, rgba(88,166,255,.32), transparent 27%), linear-gradient(150deg, var(--ink-2), var(--ink)); box-shadow: 0 35px 70px rgba(7,26,47,.22); }
.hero-visual::after { content: ""; position: absolute; inset: 0; opacity: .15; background-image: linear-gradient(rgba(255,255,255,.13) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.13) 1px, transparent 1px); background-size: 38px 38px; }
.orbit { position: absolute; border: 1px solid rgba(130,216,238,.26); border-radius: 50%; }
.orbit-one { width: 480px; height: 480px; top: 40px; left: 50%; transform: translateX(-50%); }
.orbit-two { width: 300px; height: 300px; top: 130px; left: 50%; transform: translateX(-50%); }
.layer-card { position: absolute; z-index: 2; width: 215px; padding: 22px; color: var(--white); border: 1px solid rgba(255,255,255,.16); border-radius: 12px; background: rgba(10,39,69,.82); box-shadow: 0 22px 40px rgba(0,0,0,.25); backdrop-filter: blur(8px); }
.layer-card span { display: block; color: var(--cyan); font-size: .72rem; font-weight: 800; letter-spacing: .14em; }
.layer-card strong { display: block; margin-top: 6px; font-family: "Manrope", sans-serif; font-size: 1.35rem; }
.layer-card small { display: block; margin-top: 4px; color: #bdd0e4; font-size: .82rem; }
.layer-execute { top: 72px; left: 48px; }
.layer-challenge { top: 232px; right: 38px; }
.layer-decide { bottom: 56px; left: 72px; border-color: rgba(130,216,238,.4); }

.signal-strip { background: var(--ink); color: var(--white); }
.signal-grid { min-height: 122px; display: grid; grid-template-columns: repeat(3, 1fr); align-items: center; }
.signal-grid div { display: flex; align-items: center; gap: 18px; padding: 24px 34px; border-left: 1px solid rgba(255,255,255,.12); }
.signal-grid div:last-child { border-right: 1px solid rgba(255,255,255,.12); }
.signal-grid span { color: var(--blue-bright); font-size: .72rem; font-weight: 800; letter-spacing: .14em; }
.signal-grid strong { font-family: "Manrope", sans-serif; font-size: 1rem; }

.section { padding-block: 130px; }
.field-paper { display: grid; grid-template-columns: .82fr 1.18fr; gap: 100px; align-items: center; }
.paper-cover { padding-left: 24px; }
.paper-frame { position: relative; max-width: 430px; padding: 15px; background: var(--white); box-shadow: 0 32px 70px rgba(7,26,47,.18); transform: rotate(-1.7deg); }
.paper-frame::before { content: ""; position: absolute; inset: -14px 20px 20px -14px; border: 1px solid var(--blue); z-index: -1; }
.paper-frame img { width: 100%; }
.section-intro { margin: 28px 0 0; color: var(--muted); font-size: 1.17rem; max-width: 680px; }
.takeaways { list-style: none; margin: 34px 0 0; padding: 0; border-top: 1px solid var(--line); }
.takeaways li { display: grid; grid-template-columns: 48px 1fr; gap: 18px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.takeaways span { color: var(--blue); font-size: .78rem; font-weight: 800; letter-spacing: .12em; }
.takeaways p { margin: 0; }
.text-link { color: var(--ink); font-weight: 700; text-underline-offset: 5px; }
.text-link span { color: var(--blue); }

.model-section { color: var(--white); background: var(--ink); }
.model-section .eyebrow { color: var(--blue-bright); }
.section-heading { max-width: 820px; }
.section-heading > p:last-child { max-width: 740px; margin: 24px 0 0; color: #afc0d3; font-size: 1.12rem; }
.model-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 65px; }
.model-card { min-height: 405px; padding: 34px; border: 1px solid rgba(255,255,255,.14); border-radius: 14px; background: linear-gradient(150deg, rgba(255,255,255,.075), rgba(255,255,255,.025)); }
.model-number { color: var(--blue-bright); font-size: .75rem; font-weight: 800; letter-spacing: .15em; }
.model-card h3 { margin-top: 42px; }
.model-card p { color: #bdcad8; }
.model-card ul { list-style: none; margin: 26px 0 0; padding: 20px 0 0; border-top: 1px solid rgba(255,255,255,.12); color: #e6edf5; }
.model-card li { padding: 5px 0; }
.model-card li::before { content: "/"; margin-right: 10px; color: var(--blue-bright); }

.insights .section-heading { margin-bottom: 62px; }
.insights .section-heading h2 { max-width: 760px; }
.insight-grid { display: grid; grid-template-columns: 1.35fr .65fr; gap: 24px; }
.featured-insight { display: grid; grid-template-columns: .82fr 1.18fr; min-height: 480px; overflow: hidden; border: 1px solid var(--line); border-radius: 16px; background: var(--white); }
.insight-image { min-height: 480px; background: var(--ink); overflow: hidden; }
.insight-image img { width: 100%; height: 100%; object-fit: cover; object-position: top; }
.insight-body { display: flex; flex-direction: column; justify-content: center; padding: 48px; }
.meta { margin: 0 0 18px; color: var(--blue); font-size: .75rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.insight-body h3 { font-size: clamp(1.9rem, 3vw, 3rem); }
.insight-body > p:not(.meta) { color: var(--muted); }
.quote-card { padding: 48px; border-radius: 16px; color: var(--white); background: var(--blue); }
.quote-card .meta { color: #d6ebff; }
.quote-card blockquote { margin: 60px 0 28px; font-family: "Manrope", sans-serif; font-size: clamp(2rem, 3.4vw, 3.25rem); font-weight: 700; line-height: 1.18; letter-spacing: -.04em; }
.quote-card > p:last-child { color: #e0efff; }

.about-section { color: var(--white); background: var(--ink-2); }
.about-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 100px; }
.about-section .eyebrow { color: var(--blue-bright); }
.about-copy { font-size: 1.13rem; color: #cfdae6; }
.about-copy p:first-child { margin-top: 0; }
.disclaimer { padding-top: 18px; border-top: 1px solid rgba(255,255,255,.12); color: #8fa4b9; font-size: .86rem; }

.closing-cta { max-width: 980px; padding-block: 140px; text-align: center; }
.closing-cta .eyebrow { text-align: center; }
.closing-cta h2 { font-size: clamp(2.4rem, 4.8vw, 5rem); }
.closing-cta .button { margin-top: 36px; }

.site-footer { padding-block: 55px; color: #aebfd0; background: #041322; border-top: 1px solid rgba(255,255,255,.08); }
.footer-grid { display: grid; grid-template-columns: 1fr auto; gap: 28px; align-items: end; }
.footer-brand { color: var(--white); }
.footer-grid p { margin: 12px 0 0; font-size: .9rem; }
.footer-links { display: flex; gap: 22px; }
.footer-links a { text-decoration: none; font-size: .88rem; }
.footer-links a:hover { color: var(--white); }
.copyright { grid-column: 1 / -1; padding-top: 28px; border-top: 1px solid rgba(255,255,255,.08); }

.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .button { transition: none; }
}

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; min-height: auto; padding-block: 80px; }
  .hero-visual { min-height: 500px; }
  .field-paper, .about-grid { grid-template-columns: 1fr; gap: 65px; }
  .paper-cover { padding-left: 0; }
  .paper-frame { margin-inline: auto; }
  .model-grid { grid-template-columns: 1fr; }
  .model-card { min-height: auto; }
  .insight-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  :root { --shell: min(100% - 28px, 1180px); }
  .site-header { position: relative; }
  .menu-toggle { display: block; }
  .site-nav { display: none; position: absolute; top: 78px; left: 0; right: 0; padding: 20px; flex-direction: column; align-items: flex-start; gap: 16px; background: var(--ink); border-top: 1px solid rgba(255,255,255,.1); }
  .site-nav.open { display: flex; }
  .hero { gap: 48px; padding-top: 64px; }
  h1 { font-size: clamp(2.85rem, 15vw, 4.2rem); }
  .hero-lede { font-size: 1.08rem; }
  .hero-visual { min-height: 475px; }
  .layer-card { width: 190px; padding: 18px; }
  .layer-execute { top: 40px; left: 20px; }
  .layer-challenge { top: 192px; right: 18px; }
  .layer-decide { bottom: 42px; left: 34px; }
  .signal-grid { grid-template-columns: 1fr; padding-block: 10px; }
  .signal-grid div, .signal-grid div:last-child { border-left: 0; border-right: 0; border-bottom: 1px solid rgba(255,255,255,.1); }
  .section { padding-block: 88px; }
  .field-paper { gap: 70px; }
  .featured-insight { grid-template-columns: 1fr; }
  .insight-image { max-height: 420px; }
  .insight-body, .quote-card { padding: 32px; }
  .about-grid { gap: 42px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-links { flex-wrap: wrap; }
  .copyright { grid-column: 1; }
}

/* White paper landing page */
.paper-landing{display:grid;grid-template-columns:1.35fr .65fr;gap:72px;align-items:center;padding-block:88px 100px}.paper-landing h1{font-size:clamp(2.5rem,4.4vw,4.5rem);line-height:1.12}.landing-cover{padding:20px}.landing-cover>p{margin-top:32px;font-weight:700}.landing-cover span{font-size:.9rem;color:var(--muted);font-weight:400}.download-note{color:var(--muted);font-size:.9rem;margin:14px 0 20px}.landing-author{max-width:850px}.landing-author>.button{margin-top:24px}.paper-landing+.model-section .model-card{min-height:300px}.eyebrow,.meta{font-size:.875rem}
@media(max-width:900px){.paper-landing{grid-template-columns:1fr;gap:48px;padding-block:56px 72px}.landing-cover{max-width:420px;margin:auto}.paper-landing h1{font-size:clamp(2.5rem,7vw,4rem)}}

.lead-form{margin:30px 0 24px;padding:28px;background:white;border:1px solid var(--line);border-radius:12px}
.lead-form h2{font-size:1.6rem;letter-spacing:-.02em}.lead-form>p{margin:12px 0}
.lead-form label{display:block;font-weight:700;margin:16px 0 6px}.lead-form label span{font-weight:400}
.lead-form input:not([type=checkbox]){width:100%;min-height:48px;padding:10px 12px;border:1px solid #899bad;border-radius:5px;font:inherit}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}.lead-form .check-label{display:flex;gap:10px;align-items:flex-start;font-size:.95rem;line-height:1.5}.check-label input{margin-top:5px;width:18px;height:18px;flex-shrink:0}
.privacy-copy{font-size:.875rem;color:#4c6075}.lead-form .button{font:inherit;font-weight:700;cursor:pointer}.lead-form .button:disabled{opacity:.6;cursor:wait}
.bot-field{position:absolute;left:-10000px}.lead-form[hidden]{display:none}#paper-form{scroll-margin-top:100px}
.admin-shell{padding-block:48px;max-width:1180px}.admin-shell h1{font-size:2.8rem}.admin-toolbar{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;align-items:center;margin-bottom:32px}
.admin-stats{display:flex;gap:40px;flex-wrap:wrap;margin:28px 0;padding-block:24px;border-block:1px solid var(--line)}.admin-stats strong{display:block;font-size:2rem}.admin-table-wrap{overflow:auto;background:white;border:1px solid var(--line);border-radius:8px}
.admin-table{width:100%;border-collapse:collapse;font-size:.95rem}.admin-table th,.admin-table td{padding:16px;text-align:left;border-bottom:1px solid var(--line)}.admin-table th{background:var(--ink);color:white}.admin-table td small{display:block;color:var(--muted)}
.admin-notice{color:#52657a;font-size:.9rem}.pagination{display:flex;gap:24px;margin:24px 0}.delete-button{background:none;border:0;color:#9c2630;text-decoration:underline;cursor:pointer;font:inherit}
@media(max-width:600px){.form-row{grid-template-columns:1fr;gap:0}.lead-form{padding:20px}.admin-shell h1{font-size:2.2rem}}

/* Approved Montano AI monogram */
.logo-window{display:block;position:relative;overflow:hidden;width:250px;height:52px;background:#fff;border-radius:5px;flex-shrink:0}
.brand-logo{position:absolute;width:300px;max-width:none;height:auto;left:-25px;top:-24px}
@media(max-width:720px){.logo-window{width:210px;height:46px}.brand-logo{width:252px;left:-21px;top:-19px}}