:root {
  --ck-black: #0a0a0a;
  --ck-ink: #14161a;
  --ck-charcoal: #1f2329;
  --ck-line: #2a2f37;
  --ck-bone: #f4efe8;
  --ck-paper: #ffffff;
  --ck-amber: #f5a524;
  --ck-amber-deep: #c47a14;
  --ck-blood: #b8351c;
  --ck-mute: #8a8f99;

  --gutter: 24px;
  --section-y: 96px;
  --maxw: 1200px;

  --s-2: 8px; --s-3: 12px; --s-4: 16px; --s-5: 20px; --s-6: 24px;
  --s-7: 32px; --s-8: 40px; --s-9: 56px; --s-10: 72px;

  --display: "Outfit", "Inter", system-ui, sans-serif;
  --serif: "Fraunces", Georgia, serif;
  --body: "Inter", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--body);
  color: var(--ck-bone);
  background: var(--ck-black);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  line-height: 1.55;
}
img { max-width: 100%; display: block; }
a { color: var(--ck-amber); text-decoration: none; }
a:hover { color: var(--ck-bone); }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter); }
.skip-link { position: absolute; left: -9999px; }
.skip-link:focus { left: var(--gutter); top: var(--gutter); background: var(--ck-amber); color: #000; padding: 8px 12px; z-index: 100; }

/* Type */
h1, h2, h3, h4 { font-family: var(--display); font-weight: 700; letter-spacing: -0.02em; line-height: 1.05; margin: 0 0 var(--s-5); color: var(--ck-bone); }
h1 { font-size: clamp(44px, 7vw, 96px); }
h2 { font-size: clamp(32px, 4.5vw, 56px); }
h3 { font-size: clamp(22px, 2.4vw, 30px); letter-spacing: -0.01em; }
h4 { font-size: 18px; text-transform: uppercase; letter-spacing: 0.12em; color: var(--ck-amber); }
p { margin: 0 0 var(--s-5); }
.lede { font-family: var(--serif); font-size: clamp(20px, 2.2vw, 26px); font-style: italic; color: var(--ck-bone); opacity: 0.92; line-height: 1.45; }
.eyebrow { font-family: var(--display); font-weight: 600; text-transform: uppercase; letter-spacing: 0.18em; font-size: 13px; color: var(--ck-amber); margin-bottom: var(--s-4); }

/* Header */
.site-header {
  position: absolute; top: 0; left: 0; right: 0; z-index: 50;
  padding: 22px 0;
}
.site-header.scrolled { position: relative; background: var(--ck-black); border-bottom: 1px solid var(--ck-line); }
.site-header .container { display: flex; align-items: center; justify-content: space-between; gap: var(--s-6); }
.brand { font-family: var(--display); font-weight: 700; letter-spacing: -0.02em; font-size: 22px; color: var(--ck-bone); display: flex; align-items: center; gap: 10px; }
.brand .mark { width: 32px; height: 32px; border-radius: 50%; background: var(--ck-amber); color: #000; display: inline-flex; align-items: center; justify-content: center; font-size: 14px; font-weight: 700; }
.nav ul { list-style: none; display: flex; gap: var(--s-7); margin: 0; padding: 0; }
.nav a { color: var(--ck-bone); font-weight: 500; font-size: 15px; letter-spacing: 0.02em; }
.nav a[aria-current="page"] { color: var(--ck-amber); }
.nav a:hover { color: var(--ck-amber); }
.hamburger { display: none; background: transparent; border: 0; color: var(--ck-bone); font-size: 26px; cursor: pointer; padding: 6px; }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 8px; font-family: var(--display); font-weight: 600; font-size: 15px; letter-spacing: 0.04em; text-transform: uppercase; padding: 14px 22px; border-radius: 2px; border: 0; cursor: pointer; transition: transform .15s, background .15s; }
.btn-primary { background: var(--ck-amber); color: #000; }
.btn-primary:hover { background: var(--ck-bone); color: #000; transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--ck-bone); border: 1px solid var(--ck-line); }
.btn-ghost:hover { border-color: var(--ck-amber); color: var(--ck-amber); }

/* Hero */
.hero {
  position: relative; min-height: 92vh; display: flex; align-items: center;
  background: var(--ck-black); overflow: hidden;
}
.hero-media { position: absolute; inset: 0; }
.hero-media img { width: 100%; height: 100%; object-fit: cover; opacity: 0.55; filter: grayscale(0.2) contrast(1.1); }
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(10,10,10,0.92) 0%, rgba(10,10,10,0.55) 50%, rgba(10,10,10,0.92) 100%);
}
.hero-inner { position: relative; z-index: 2; padding: 160px 0 120px; max-width: 880px; }
.hero-sub { font-family: var(--serif); font-style: italic; font-size: clamp(18px, 2vw, 24px); color: var(--ck-bone); opacity: 0.9; margin: var(--s-6) 0 var(--s-8); max-width: 640px; line-height: 1.45; }
.hero-cta { display: flex; gap: var(--s-4); flex-wrap: wrap; }

/* Audience strip */
.audience-strip { background: var(--ck-ink); padding: var(--s-9) 0; border-top: 1px solid var(--ck-line); border-bottom: 1px solid var(--ck-line); }
.audience-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--s-7); }
.audience-card { padding: var(--s-7); border: 1px solid var(--ck-line); border-radius: 4px; background: var(--ck-charcoal); transition: border-color .2s; }
.audience-card:hover { border-color: var(--ck-amber); }
.audience-card .badge { font-family: var(--display); font-size: 12px; text-transform: uppercase; letter-spacing: 0.16em; color: var(--ck-amber); margin-bottom: var(--s-4); }
.audience-card h3 { color: var(--ck-bone); margin-bottom: var(--s-4); }
.audience-card p { color: var(--ck-mute); font-size: 15px; margin: 0; }

/* Sections */
section.block { padding: var(--section-y) 0; }
.block-dark { background: var(--ck-black); }
.block-ink { background: var(--ck-ink); }
.section-head { max-width: 720px; margin-bottom: var(--s-9); }

/* Keynote teaser cards */
.keynote-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--s-6); }
.keynote-card { padding: var(--s-7); background: var(--ck-charcoal); border: 1px solid var(--ck-line); border-left: 4px solid var(--ck-amber); transition: transform .2s, border-color .2s; }
.keynote-card:hover { transform: translateY(-4px); border-left-color: var(--ck-blood); }
.keynote-card .num { font-family: var(--serif); font-size: 14px; color: var(--ck-amber); letter-spacing: 0.1em; margin-bottom: var(--s-3); display: block; }
.keynote-card h3 { font-size: 22px; margin-bottom: var(--s-4); }
.keynote-card p { color: var(--ck-mute); font-size: 15px; margin-bottom: var(--s-5); }
.keynote-card .more { color: var(--ck-amber); font-size: 13px; text-transform: uppercase; letter-spacing: 0.12em; font-weight: 600; }

/* Sizzle slot */
.sizzle { background: var(--ck-ink); padding: var(--section-y) 0; }
.sizzle-frame { aspect-ratio: 16/9; background: var(--ck-charcoal); border: 1px solid var(--ck-line); border-radius: 4px; display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden; }
.sizzle-frame img { width: 100%; height: 100%; object-fit: cover; opacity: 0.55; }
.sizzle-play { position: absolute; width: 88px; height: 88px; border-radius: 50%; background: var(--ck-amber); color: #000; display: flex; align-items: center; justify-content: center; font-size: 32px; cursor: pointer; transition: transform .2s; border: 0; }
.sizzle-play:hover { transform: scale(1.08); }
.sizzle-caption { color: var(--ck-mute); font-size: 14px; text-align: center; margin-top: var(--s-4); font-style: italic; }

/* Page hero (interior) */
.page-hero { padding: 160px 0 var(--s-9); background: var(--ck-ink); border-bottom: 1px solid var(--ck-line); }
.page-hero h1 { margin-bottom: var(--s-5); }
.page-hero .lede { max-width: 760px; }

/* Long-form prose */
.prose { max-width: 760px; margin: 0 auto; font-size: 18px; line-height: 1.75; color: var(--ck-bone); }
.prose p { margin-bottom: var(--s-6); }
.prose h2 { margin-top: var(--s-9); margin-bottom: var(--s-5); }
.prose blockquote { border-left: 4px solid var(--ck-amber); padding: var(--s-4) var(--s-6); margin: var(--s-7) 0; font-family: var(--serif); font-style: italic; font-size: 22px; color: var(--ck-bone); background: var(--ck-charcoal); }
.prose figure { margin: var(--s-8) 0; }
.prose figcaption { color: var(--ck-mute); font-size: 14px; text-align: center; margin-top: var(--s-3); font-style: italic; }

/* Keynote detail (speaking page) */
.keynote-row { padding: var(--s-9) 0; border-bottom: 1px solid var(--ck-line); }
.keynote-row:last-child { border-bottom: 0; }
.keynote-row .grid { display: grid; grid-template-columns: 1fr 2fr; gap: var(--s-9); align-items: start; }
.keynote-row .num { font-family: var(--serif); font-size: 64px; color: var(--ck-amber); line-height: 1; opacity: 0.55; }
.keynote-row h2 { margin-bottom: var(--s-4); }
.keynote-row .takeaways { list-style: none; padding: 0; margin: var(--s-6) 0; }
.keynote-row .takeaways li { padding: var(--s-3) 0; padding-left: var(--s-7); position: relative; color: var(--ck-bone); border-bottom: 1px solid var(--ck-line); }
.keynote-row .takeaways li::before { content: "→"; position: absolute; left: 0; color: var(--ck-amber); font-weight: 700; }
.audience-tags { display: flex; gap: var(--s-3); flex-wrap: wrap; margin-top: var(--s-5); }
.audience-tag { font-size: 12px; text-transform: uppercase; letter-spacing: 0.1em; padding: 6px 12px; border: 1px solid var(--ck-line); color: var(--ck-mute); border-radius: 2px; }

/* Formats */
.formats { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--s-6); margin-top: var(--s-7); }
.format-card { padding: var(--s-6); background: var(--ck-charcoal); border: 1px solid var(--ck-line); }
.format-card h4 { color: var(--ck-amber); margin-bottom: var(--s-3); }
.format-card p { color: var(--ck-mute); font-size: 14px; margin: 0; }

/* Proof */
.venue-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--s-6); }
.venue-card { padding: var(--s-7); background: var(--ck-charcoal); border: 1px solid var(--ck-line); }
.venue-card .meta { font-size: 12px; text-transform: uppercase; letter-spacing: 0.12em; color: var(--ck-amber); margin-bottom: var(--s-3); }
.venue-card h3 { font-size: 20px; margin-bottom: var(--s-3); }
.venue-card p { color: var(--ck-mute); font-size: 14px; margin: 0; }

.testimonial-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--s-7); margin-top: var(--s-9); }
.testimonial { padding: var(--s-7); background: var(--ck-ink); border-left: 4px solid var(--ck-amber); }
.testimonial blockquote { font-family: var(--serif); font-size: 20px; font-style: italic; color: var(--ck-bone); margin: 0 0 var(--s-5); line-height: 1.45; }
.testimonial cite { font-style: normal; color: var(--ck-mute); font-size: 14px; }
.testimonial cite strong { color: var(--ck-bone); display: block; }

/* Form (book) */
.book-form { max-width: 720px; margin: 0 auto; display: grid; gap: var(--s-5); }
.book-form label { display: block; font-family: var(--display); font-size: 13px; text-transform: uppercase; letter-spacing: 0.12em; color: var(--ck-amber); margin-bottom: var(--s-2); }
.book-form input, .book-form select, .book-form textarea {
  width: 100%; padding: 14px 16px; border: 1px solid var(--ck-line); background: var(--ck-charcoal); color: var(--ck-bone); font-family: var(--body); font-size: 16px; border-radius: 2px;
}
.book-form input:focus, .book-form select:focus, .book-form textarea:focus { outline: none; border-color: var(--ck-amber); }
.book-form textarea { min-height: 140px; resize: vertical; }
.form-row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-5); }

/* Footer */
.site-footer { background: #050505; padding: var(--s-10) 0 var(--s-7); border-top: 1px solid var(--ck-line); color: var(--ck-mute); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--s-7); margin-bottom: var(--s-8); }
.footer-grid h4 { font-size: 13px; color: var(--ck-bone); }
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin-bottom: var(--s-3); }
.footer-grid a { color: var(--ck-mute); font-size: 14px; }
.footer-grid a:hover { color: var(--ck-amber); }
.footer-ef-link { padding: var(--s-5); background: var(--ck-charcoal); border-left: 3px solid var(--ck-amber); margin-top: var(--s-5); font-size: 13px; color: var(--ck-mute); border-radius: 2px; }
.footer-ef-link a { color: var(--ck-amber); }
.footer-credit { font-size: 12px; color: var(--ck-mute); border-top: 1px solid var(--ck-line); padding-top: var(--s-5); text-align: center; }

/* Responsive */
@media (max-width: 900px) {
  :root { --section-y: 64px; --gutter: 18px; }
  .nav, .nav-cta { display: none; }
  .hamburger { display: block; }
  .audience-grid, .keynote-grid, .venue-grid, .testimonial-grid, .formats { grid-template-columns: 1fr; }
  .keynote-row .grid { grid-template-columns: 1fr; gap: var(--s-6); }
  .form-row-2 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-inner { padding: 130px 0 80px; }

  .site-header .nav.is-open {
    display: block;
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--ck-black);
    padding: 16px 20px 20px;
    border-top: 1px solid var(--ck-line);
    box-shadow: 0 12px 24px rgba(0,0,0,0.5);
  }
  .site-header .nav.is-open ul { flex-direction: column; align-items: flex-start; gap: 14px; }
  .site-header { position: relative; }
}