/* Design system: DESIGN.md (brand guide: Deep Navy + Deep Teal on white, Geist headings, Helvetica Neue body) */
:root {
  --navy: #0b1f33;
  --teal: #247a8a;
  --teal-dark: #1c6170;
  --white: #ffffff;
  --mist: #f2f6f8;     /* alternate section band */
  --line: #d9e2e8;     /* borders */
  --muted: #4a5a6a;    /* body copy on white */
  --on-navy: #c9d4de;  /* body copy on navy */
  --head: 'Geist', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --body: 'Helvetica Neue', Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font: 400 17px/1.55 var(--body);
  color: var(--navy);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, summary { font-family: var(--head); margin: 0; }
h1, h2 { font-weight: 700; letter-spacing: -0.01em; }
h2 { font-size: clamp(28px, 4vw, 40px); line-height: 1.15; }
h3 { font-size: 20px; font-weight: 600; line-height: 1.3; }
p { margin: 0; }
a { color: var(--teal); }

.wrap { max-width: 1200px; margin: 0 auto; padding: 0 16px; }
.wrap.narrow { max-width: 800px; }
section { padding: 80px 0; }
.band { background: var(--mist); }
.section-head { max-width: 680px; margin-bottom: 40px; }
/* Pill label, as in the brand guide's "OVERVIEW" chips */
.eyebrow {
  display: inline-block; margin-bottom: 16px; padding: 6px 14px; border-radius: 40px;
  font: 600 12px/1 var(--head); letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--white); background: var(--teal);
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font: 600 16px/1 var(--head);
  padding: 14px 24px; border-radius: 8px; border: 0;
  text-decoration: none; cursor: pointer; transition: background .15s;
}
.btn-primary { background: var(--teal); color: var(--white); }
.btn-primary:hover { background: var(--teal-dark); }
.btn-ghost { background: transparent; color: var(--navy); border: 1px solid var(--line); }
.btn-ghost:hover { border-color: var(--teal); }

/* Nav: white bar, shadow once scrolled */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 10; background: var(--white); transition: box-shadow .2s; }
.nav.scrolled { box-shadow: 0 1px 0 var(--line); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 76px; padding: 0 32px; max-width: 1264px; margin: 0 auto; }
.nav .btn-primary { padding: 11px 20px; }
.brand { display: block; line-height: 0; }
.nav .brand img { height: 52px; width: auto; }
.nav-links { display: flex; gap: 4px; }
.nav-links a { color: var(--navy); text-decoration: none; font: 500 15px/1 var(--head); padding: 10px 16px; border-radius: 8px; }
.nav-links a:hover { background: var(--mist); }
@media (max-width: 860px) { .nav-links { display: none; } .nav-inner { padding: 0 16px; } .nav .brand img { height: 44px; } }

/* Hero: navy, text left, TV mock right */
.hero {
  position: relative; color: var(--white);
  padding: 156px 0 136px;
  background: radial-gradient(ellipse 70% 90% at 85% 40%, rgba(36, 122, 138, .45), transparent 70%), var(--navy);
}
.hero-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: center; }
@media (max-width: 900px) { .hero-grid { grid-template-columns: 1fr; } }
.hero h1 { font-size: clamp(36px, 5.2vw, 58px); line-height: 1.06; }
.hero .sub { font-size: 19px; line-height: 1.45; color: var(--on-navy); max-width: 560px; margin: 20px 0 32px; }

/* Joined email field + button */
.capture { display: flex; max-width: 460px; padding: 5px; border-radius: 12px; background: var(--white); }
.capture input { border: 0; background: transparent; padding: 10px 14px; flex: 1; min-width: 0; color: var(--navy); }
.capture input:focus { border: 0; }
.capture .btn { flex: none; }

/* TV mock: the hero photo playing as "your ad" */
.tv { max-width: 520px; width: 100%; justify-self: center; }
.tv-screen {
  position: relative; aspect-ratio: 16 / 9; border-radius: 14px;
  border: 10px solid #050f1a; box-shadow: 0 24px 60px rgba(0, 0, 0, .45);
  /* Photo: Popescu Andrei Alexandru on Unsplash (free Unsplash License), unsplash.com/photos/1iI7BEUhkBs */
  background: linear-gradient(transparent 55%, rgba(11, 31, 51, .75)), url("images/hero.jpg") center 60% / cover;
}
.tv-tag { position: absolute; top: 12px; right: 12px; font: 600 12px/1 var(--head); background: rgba(0, 0, 0, .55); color: var(--white); padding: 6px 10px; border-radius: 6px; }
.tv-name { position: absolute; left: 18px; bottom: 16px; font: 700 clamp(18px, 2.4vw, 24px)/1.1 var(--head); color: var(--white); }
.tv-stand { width: 34%; height: 10px; margin: 0 auto; background: #050f1a; border-radius: 0 0 8px 8px; }

.hero-strip {
  position: absolute; left: 50%; bottom: 28px; transform: translateX(-50%);
  width: max-content; max-width: calc(100% - 32px); text-align: center;
  font: 500 13px/1.4 var(--head); color: var(--on-navy);
}

/* Split: text left, list right */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; gap: 32px; } }
.list { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.list li { background: var(--white); border: 1px solid var(--line); border-left: 4px solid var(--teal); border-radius: 10px; padding: 22px 28px; }
.list li p, .lead { color: var(--muted); margin-top: 6px; }
.lead { font-size: 19px; line-height: 1.45; margin-top: 16px; }

/* Cards */
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid.four { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.card { background: var(--white); border: 1px solid var(--line); border-radius: 12px; padding: 30px; }
.card .num { font: 700 13px/1 var(--head); letter-spacing: 0.1em; color: var(--teal); margin-bottom: 20px; }
.card h3 { margin-bottom: 10px; }
.card p { color: var(--muted); }

/* Tags */
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.tags span { border: 1px solid var(--line); color: var(--navy); background: var(--white); border-radius: 40px; padding: 6px 16px; font-size: 14px; }
.tags + .tags span { background: var(--mist); }

/* FAQ: native details/summary */
.faq { display: grid; gap: 12px; }
.faq details { background: var(--white); border: 1px solid var(--line); border-radius: 12px; padding: 20px 24px; }
.faq summary { font-size: 18px; font-weight: 600; cursor: pointer; }
.faq p { color: var(--muted); margin-top: 12px; }

/* Contact */
.form-card { background: var(--white); border: 1px solid var(--line); border-radius: 12px; padding: 32px; box-shadow: 0 12px 40px rgba(11, 31, 51, .06); }
form { display: grid; gap: 16px; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 560px) { .row { grid-template-columns: 1fr; } }
label { display: grid; gap: 6px; font-size: 14px; font-weight: 500; color: var(--navy); }
input, textarea {
  font: 400 16px/1.5 var(--body); color: var(--navy);
  background: var(--white); border: 1px solid var(--line); border-radius: 8px;
  padding: 11px 14px; width: 100%;
}
textarea { resize: vertical; }
input:focus, textarea:focus { outline: none; border-color: var(--teal); box-shadow: 0 0 0 3px rgba(36, 122, 138, .15); }
form .btn-primary { justify-self: start; margin-top: 8px; }
.hp { position: absolute; left: -9999px; }
.form-msg { background: var(--mist); border-left: 4px solid var(--teal); border-radius: 8px; padding: 14px 18px; margin-bottom: 16px; }

/* Footer: navy, reversed logo */
footer { background: var(--navy); color: var(--on-navy); padding: 56px 0 40px; }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 24px; align-items: center; }
footer .brand img { height: 64px; width: auto; }
.footer-links { display: flex; flex-wrap: wrap; gap: 24px; }
.footer-links a { color: var(--on-navy); text-decoration: none; }
.footer-links a:hover { color: var(--white); }
.disclaimer { font-size: 12px; color: #8597a8; margin-top: 40px; }

/* Privacy page */
.page { padding: 140px 0 72px; }
.page .wrap { max-width: 720px; }
.page h1 { font-size: clamp(32px, 5vw, 42px); line-height: 1.15; margin-bottom: 8px; }
.page h2 { font-size: 21px; margin: 40px 0 12px; }
.page p { color: var(--muted); margin-bottom: 12px; }