:root { --tekst: #1d2433; --vtor: #5b6476; --akcent: #0b6b57; --fon: #f4f6f5; --liniya: #d9dfdc; }
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; background: #fff; color: var(--tekst); font: 17px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif; }
header, main, footer { max-width: 44rem; margin: 0 auto; padding: 0 1.1rem; }
header { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding-top: 1rem; padding-bottom: 1rem; border-bottom: 1px solid var(--liniya); }
.logo { font-weight: 700; font-size: 1.2rem; color: var(--akcent); text-decoration: none; }
.ssylka { font-size: .95rem; }
h1 { font-size: 1.85rem; line-height: 1.2; margin: 1.6rem 0 1rem; }
h2 { font-size: 1.3rem; line-height: 1.25; margin: 2rem 0 .6rem; }
a { color: var(--akcent); }
li { margin: .4rem 0; }
.vvod { font-size: 1.1rem; color: var(--vtor); }
.korotko { background: var(--fon); border-left: 4px solid var(--akcent); padding: .9rem 1rem; border-radius: 0 6px 6px 0; margin: 1rem 0; }
.sverka, .melko { font-size: .9rem; color: var(--vtor); }
.spisok { list-style: none; padding: 0; }
.spisok li { display: flex; flex-direction: column; gap: .2rem; padding: .7rem 0; margin: 0; border-bottom: 1px solid var(--liniya); }
.spisok span { font-size: .85rem; color: var(--vtor); }
form { display: grid; gap: .8rem; margin: 1.2rem 0; }
label { display: grid; gap: .25rem; font-weight: 600; font-size: .95rem; }
input, select { font: inherit; font-weight: 400; width: 100%; min-height: 2.75rem; padding: .5rem .65rem; border: 1px solid #aeb7b3; border-radius: 6px; background: #fff; color: inherit; }
pre { white-space: pre-wrap; overflow-wrap: anywhere; font: inherit; font-size: .95rem; background: var(--fon); border: 1px solid var(--liniya); border-radius: 6px; padding: 1rem; }
button { font: inherit; font-weight: 600; min-height: 2.75rem; padding: .5rem 1rem; color: #fff; background: var(--akcent); border: 0; border-radius: 6px; cursor: pointer; }
:focus-visible { outline: 3px solid #e0a100; outline-offset: 2px; }
footer { margin-top: 2.5rem; padding-top: 1rem; padding-bottom: 2rem; border-top: 1px solid var(--liniya); font-size: .85rem; color: var(--vtor); }