:root {
  color-scheme: light;
  --navy: #102c3e;
  --blue: #315b75;
  --ink: #182f41;
  --muted: #465f70;
  --paper: #f5f9fc;
  --line: #cfdee7;
  --gold: #ffe18a;
  font-family: "Segoe UI", system-ui, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); }
a { color: inherit; }
a:focus-visible { outline: 3px solid #3882ac; outline-offset: 4px; }
.shell { width: min(1190px, calc(100% - 48px)); margin-inline: auto; }
.skip-link { position: fixed; top: 12px; left: 12px; z-index: 2; padding: 10px; background: white; transform: translateY(-200%); }
.skip-link:focus { transform: none; }
.header { background: #fff; border-bottom: 1px solid var(--line); }
.header-inner { min-height: 70px; display: flex; gap: 24px; align-items: center; justify-content: space-between; flex-wrap: wrap; padding-block: 10px; }
.brand { display: flex; align-items: center; gap: 10px; font-size: 22px; font-weight: 750; text-decoration: none; }
.header nav { display: flex; flex-wrap: wrap; gap: 22px; color: var(--muted); font-size: 14px; }
.header nav a, .footer a { text-decoration: none; }
.header nav a:hover, .footer a:hover { text-decoration: underline; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 10px; border: 1px solid transparent; border-radius: 9px; padding: 11px 16px; min-height: 43px; font-weight: 700; text-decoration: none; }
.header-button, .guide-button { border-color: var(--line); background: white; color: var(--blue); }
.header-button:hover, .guide-button:hover { background: #e7f0f6; }
.hero { background: radial-gradient(circle, #315063 1px, transparent 1px) 0 0 / 23px 23px, var(--navy); color: #fff; }
.hero-inner { min-height: 470px; display: grid; grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr); align-items: center; gap: clamp(22px, 5vw, 68px); padding-block: 56px; }
.eyebrow { font-size: 11px; letter-spacing: .16em; font-weight: 800; color: var(--blue); margin: 0 0 12px; }
.hero .eyebrow { color: var(--gold); }
h1 { margin: 0; font-size: clamp(45px, 6vw, 82px); line-height: .99; letter-spacing: -.05em; }
h1 em { display: block; color: var(--gold); font-style: normal; }
.intro { max-width: 44ch; color: #d3e4ee; line-height: 1.62; font-size: 17px; margin-block: 20px 25px; }
.actions { display: flex; flex-wrap: wrap; gap: 9px; }
.primary { background: var(--gold); color: var(--navy); }
.primary:hover { background: #fff0b8; }
.secondary { color: #fff; border-color: #7893a3; }
.secondary:hover { background: #25495d; }
.board-preview { margin: 0; border-radius: 15px; overflow: hidden; background: #f2f7fa; border: 1px solid #5a7688; box-shadow: 0 17px 42px #06142190; }
.window-bar { display: flex; align-items: center; gap: 12px; min-height: 34px; padding-inline: 12px; font-size: 12px; color: var(--blue); background: #fff; border-bottom: 1px solid var(--line); }
.window-bar span { letter-spacing: 3px; color: #47738c; font-size: 8px; }
.board-preview img { display: block; width: 100%; height: auto; }
.features { padding-block: 47px 36px; }
h2 { margin: 0 0 12px; font-size: clamp(24px, 4vw, 36px); letter-spacing: -.035em; line-height: 1.15; }
.feature-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 23px; }
.feature-list article { border-top: 3px solid #8baec2; padding: 15px 18px 17px; background: #fff; border-radius: 0 0 10px 10px; }
.feature-number { font-size: 12px; font-weight: 800; color: var(--blue); }
h3 { font-size: 18px; margin: 7px 0; }
.feature-list p, .guide p { margin: 0; line-height: 1.55; color: var(--muted); }
.guide { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 15px 32px; padding: 26px; border: 1px solid var(--line); border-radius: 13px; background: #e8f2f8; }
.guide div { max-width: 680px; }
.guide h2 { font-size: clamp(22px, 3vw, 28px); }
.footer { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; padding-block: 25px; color: var(--muted); font-size: 14px; }
@media (max-width: 760px) {
  .hero-inner { grid-template-columns: 1fr; padding-block: 38px; }
  .header-inner { gap: 10px 16px; }
  .header nav { order: 1; flex-basis: 100%; gap: 17px; }
  .feature-list { grid-template-columns: 1fr; }
  .features { padding-top: 34px; }
}
@media (max-width: 400px) {
  .shell { width: calc(100% - 30px); }
  .header-button { font-size: 13px; padding-inline: 9px; }
  .guide { padding: 18px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }