:root {
  color-scheme: light;
  --ink: #14212b;
  --muted: #566774;
  --paper: #f5f8fa;
  --card: #ffffff;
  --teal: #087c72;
  --teal-dark: #055e57;
  --blue: #285fa8;
  --line: #d9e3e8;
  --warn: #fff5d6;
  font: 16px/1.6 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); }
a { color: var(--blue); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible, button:focus-visible { outline: 3px solid #f2a900; outline-offset: 3px; }

.shell { width: min(1100px, calc(100% - 32px)); margin-inline: auto; }
.site-head { background: rgba(255,255,255,.96); border-bottom: 1px solid var(--line); }
.site-head .shell { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 11px; color: var(--ink); text-decoration: none; font-weight: 800; }
.brand img { width: 42px; height: 42px; border-radius: 9px; }
.brand small { display: block; color: var(--muted); font-weight: 500; line-height: 1.2; }
nav { display: flex; gap: 18px; flex-wrap: wrap; }
nav a { color: var(--ink); text-decoration: none; font-weight: 650; }

.hero { padding: 78px 0 62px; background: radial-gradient(circle at 80% 10%, #dff7f2 0, transparent 40%), linear-gradient(145deg, #fff 0, #eef6fa 100%); border-bottom: 1px solid var(--line); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(280px, .75fr); gap: 46px; align-items: center; }
.eyebrow { color: var(--teal-dark); font-weight: 800; letter-spacing: .08em; text-transform: uppercase; font-size: .8rem; }
h1 { max-width: 780px; margin: 10px 0 18px; font-size: clamp(2.35rem, 6vw, 4.8rem); line-height: 1.03; letter-spacing: -.045em; }
h2 { margin-top: 0; font-size: clamp(1.55rem, 3vw, 2.35rem); line-height: 1.15; }
h3 { margin-bottom: 4px; }
.lead { max-width: 680px; color: var(--muted); font-size: 1.16rem; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }
.button { display: inline-block; padding: 12px 18px; border-radius: 10px; background: var(--teal); color: white; text-decoration: none; font-weight: 800; border: 2px solid var(--teal); }
.button:hover { background: var(--teal-dark); border-color: var(--teal-dark); }
.button.secondary { background: transparent; color: var(--teal-dark); }
.status { margin-top: 13px; color: var(--muted); font-size: .9rem; }

.preview { background: #fff; border: 1px solid var(--line); border-radius: 18px; box-shadow: 0 22px 60px #1b46531a; padding: 22px; }
.preview-head { display: flex; justify-content: space-between; gap: 15px; padding-bottom: 13px; border-bottom: 1px solid var(--line); font-weight: 800; }
.badge { border-radius: 999px; background: #daf4ef; color: var(--teal-dark); padding: 3px 9px; font-size: .78rem; }
.format { margin-top: 14px; border-radius: 10px; padding: 12px; color: white; text-align: center; font-weight: 750; }
.word { background: #2d61a8; }
.pdf { background: #b92b23; }
.preview p { color: var(--muted); font-size: .88rem; margin-bottom: 0; }

.section { padding: 64px 0; }
.section.alt { background: #fff; border-block: 1px solid var(--line); }
.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 24px; }
.alt .card { background: var(--paper); }
.card p { color: var(--muted); }
.proof-section { background: #eef4f7; border-top: 1px solid var(--line); }
.proof-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; margin-top: 26px; }
.proof { margin: 0; background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 12px; overflow: hidden; }
.proof img { display: block; width: 100%; height: auto; border-radius: 8px; border: 1px solid var(--line); }
.proof figcaption { color: var(--muted); font-size: .9rem; padding: 10px 4px 2px; }
.checklist { list-style: none; padding: 0; }
.checklist li { margin: 10px 0; padding-left: 28px; position: relative; }
.checklist li::before { content: "✓"; color: var(--teal); font-weight: 900; position: absolute; left: 0; }
.notice { padding: 18px 20px; border-radius: 12px; background: var(--warn); border: 1px solid #ecd487; }

.content { width: min(820px, calc(100% - 32px)); margin: 54px auto 80px; }
.content h1 { font-size: clamp(2rem, 5vw, 3.4rem); }
.content h2 { margin-top: 42px; font-size: 1.55rem; }
.content li { margin-block: 7px; }
.meta { color: var(--muted); }
code { background: #eaf0f3; padding: 2px 5px; border-radius: 4px; }

.site-foot { padding: 34px 0; border-top: 1px solid var(--line); background: #fff; color: var(--muted); }
.site-foot .shell { display: flex; justify-content: space-between; gap: 18px; flex-wrap: wrap; }
.site-foot p { margin: 0; }
.foot-links { display: flex; gap: 16px; flex-wrap: wrap; }

@media (max-width: 760px) {
  .site-head .shell { align-items: flex-start; flex-direction: column; padding-block: 14px; }
  .hero { padding-top: 54px; }
  .hero-grid, .grid, .proof-grid { grid-template-columns: 1fr; }
  .preview { max-width: 440px; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }