:root {
  --color-bg: #ffffff;
  --color-raise: #f6f7f8;
  --color-text: #14171a;
  --color-muted: #5f6874;
  --color-accent: #047857;
  --color-accent-deep: #03593f;
  --color-border: #e2e5e9;
  --font-head: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --font-body: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --font-mark: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --container: 1200px;
  --radius: 2px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0; background: var(--color-bg); color: var(--color-text);
  font-family: var(--font-body); font-size: 17px; line-height: 1.62;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-accent); text-decoration: underline; text-underline-offset: 2px; }
a:hover { color: var(--color-accent-deep); }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }

h1, h2, h3 { font-family: var(--font-head); font-weight: 650; line-height: 1.15; margin: 0 0 .55em; }
h1 { font-size: clamp(2rem, 5vw, 3.05rem); letter-spacing: -.025em; }
h2 { font-size: clamp(1.35rem, 2.8vw, 1.85rem); letter-spacing: -.02em; }
h3 { font-size: 1.1rem; letter-spacing: -.01em; }
p { margin: 0 0 1.05em; }
ul, ol { margin: 0 0 1.05em; padding-left: 1.2em; }
li { margin-bottom: .4em; }
li::marker { color: var(--color-accent); }

.kb-wrap { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.kb-kicker { font-size: .72rem; letter-spacing: 2px; text-transform: uppercase; color: var(--color-muted); margin: 0 0 .9em; }
.kb-skip { position: absolute; left: -9999px; }
.kb-skip:focus { left: 12px; top: 12px; background: #fff; padding: 8px 14px; z-index: 60; }

.kb-head { border-bottom: 1px solid var(--color-border); padding: 20px 0 14px; }
.kb-head__logo { display: inline-block; font-weight: 700; font-size: 1.15rem; letter-spacing: -.02em; color: var(--color-text); text-decoration: none; }
.kb-head__logo b { color: var(--color-accent); font-weight: 700; }
.kb-nav { display: flex; justify-content: flex-end; flex-wrap: wrap; gap: 8px 22px; margin-top: 12px; }
.kb-nav a { font-size: .86rem; color: var(--color-muted); text-decoration: none; }
.kb-nav a:hover { color: var(--color-accent); }

.kb-hero { padding: 62px 0 46px; }
.kb-hero h1 { max-width: 20ch; }
.kb-hero__answer { font-size: 1.12rem; max-width: 60ch; color: var(--color-text); }
.kb-hero__jump { display: grid; gap: 10px; margin-top: 26px; max-width: 62ch; }
.kb-hero__jump a { display: flex; justify-content: space-between; gap: 16px; padding: 12px 0; border-top: 1px solid var(--color-border); text-decoration: none; color: var(--color-text); }
.kb-hero__jump a:last-child { border-bottom: 1px solid var(--color-border); }
.kb-hero__jump a:hover { color: var(--color-accent); }
.kb-hero__jump span { color: var(--color-muted); font-size: .82rem; }

.kb-btn {
  display: inline-block; padding: 12px 24px; border-radius: var(--radius);
  background: var(--color-accent); border: 1px solid var(--color-accent);
  color: #fff; text-decoration: none; font-size: .93rem; font-weight: 550; cursor: pointer;
}
.kb-btn:hover { background: var(--color-accent-deep); border-color: var(--color-accent-deep); color: #fff; }
.kb-btn--line { background: transparent; color: var(--color-accent); }
.kb-btn--line:hover { background: transparent; color: var(--color-accent-deep); }

.kb-section { padding: 50px 0; border-top: 1px solid var(--color-border); }
.kb-section__head { margin-bottom: 26px; max-width: 64ch; }
.kb-section__head p { margin: 0; color: var(--color-muted); }

.kb-index { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 48px; }
.kb-index a { display: grid; grid-template-columns: 32px minmax(0, 1fr); gap: 12px; padding: 14px 0; border-bottom: 1px solid var(--color-border); text-decoration: none; color: var(--color-text); }
.kb-index a:hover { color: var(--color-accent); }
.kb-index b { color: var(--color-accent); font-weight: 600; font-size: .82rem; padding-top: 2px; }
.kb-index em { display: block; font-style: normal; color: var(--color-muted); font-size: .85rem; }

.kb-longread { columns: 2; column-gap: 48px; max-width: 100%; }
.kb-longread p { break-inside: avoid; }

.kb-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.kb-tile { border: 1px solid var(--color-border); border-radius: var(--radius); padding: 22px; display: grid; grid-template-columns: 56px minmax(0, 1fr); gap: 18px; align-items: start; }
.kb-tile img { border-radius: var(--radius); border: 1px solid var(--color-border); width: 56px; height: 56px; }
.kb-tile h3 { margin-bottom: .3em; }
.kb-tile p { margin: 0 0 .7em; color: var(--color-muted); font-size: .93rem; }
.kb-tile__links { display: flex; gap: 16px; flex-wrap: wrap; font-size: .85rem; }

.kb-list { list-style: none; margin: 26px 0 0; padding: 0; }
.kb-list li { display: flex; justify-content: space-between; gap: 20px; padding: 12px 0; border-bottom: 1px solid var(--color-border); margin: 0; }
.kb-list span { color: var(--color-muted); font-size: .84rem; white-space: nowrap; }

.kb-tablewrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; min-width: 680px; }
th, td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--color-border); vertical-align: top; font-size: .93rem; }
th { font-size: .72rem; letter-spacing: 2px; text-transform: uppercase; color: var(--color-muted); font-weight: 600; }
td:first-child { font-weight: 600; }

.kb-faq details { border-bottom: 1px solid var(--color-border); padding: 16px 0; }
.kb-faq summary { cursor: pointer; font-weight: 600; }
.kb-faq p { margin: .7em 0 0; color: var(--color-muted); font-size: .95rem; }

.kb-promo { background: var(--color-raise); }
.kb-promo__grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px; align-items: start; }
.kb-price { font-size: 1.6rem; font-weight: 650; margin: 0 0 .35em; }
.kb-specs { margin: 0 0 1.1em; display: grid; grid-template-columns: 130px minmax(0, 1fr); gap: 8px 18px; }
.kb-specs dt { font-size: .78rem; letter-spacing: 1px; text-transform: uppercase; color: var(--color-muted); }
.kb-specs dd { margin: 0; font-size: .95rem; }
.kb-fine { font-size: .85rem; color: var(--color-muted); }

.kb-form { background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius); padding: 26px; }
.kb-form label { display: block; font-size: .8rem; color: var(--color-muted); margin-bottom: 6px; }
.kb-form input, .kb-form select, .kb-form textarea {
  width: 100%; padding: 11px 13px; margin-bottom: 16px; border: 1px solid var(--color-border);
  border-radius: var(--radius); font: inherit; font-size: .95rem; background: #fff; color: var(--color-text);
}
.kb-form textarea { min-height: 104px; resize: vertical; }
.kb-form__hp { position: absolute; left: -9999px; }
.kb-form__legal { font-size: .83rem; color: var(--color-muted); margin: 14px 0 0; }

.kb-article { padding: 46px 0 20px; }
.kb-article__head { max-width: 66ch; margin-bottom: 28px; }
.kb-article__body { max-width: 68ch; }
.kb-article__body h2 { margin-top: 1.65em; }
.kb-article__body img { border: 1px solid var(--color-border); border-radius: var(--radius); }
.kb-duo { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; margin: 26px 0; }
.kb-caption { font-size: .83rem; color: var(--color-muted); margin-top: 10px; }

.kb-legal { padding: 46px 0; max-width: 72ch; }
.kb-legal h2 { margin-top: 1.75em; font-size: 1.18rem; }

.kb-foot { border-top: 1px solid var(--color-border); padding: 34px 0 44px; }
.kb-foot__mail { font-size: clamp(1.3rem, 3.6vw, 2.1rem); font-weight: 650; letter-spacing: -.02em; margin: 0 0 30px; }
.kb-foot__cols { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 26px; }
.kb-foot h4 { font-size: .72rem; letter-spacing: 2px; text-transform: uppercase; color: var(--color-muted); margin: 0 0 12px; font-weight: 600; }
.kb-foot ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; font-size: .9rem; }
.kb-foot ul li { margin: 0; }
.kb-foot__bottom { margin-top: 30px; padding-top: 18px; border-top: 1px solid var(--color-border); font-size: .84rem; color: var(--color-muted); }

.kb-cookie { position: fixed; left: 0; right: 0; bottom: 0; z-index: 50; background: #fff; border-top: 1px solid var(--color-border); padding: 18px 0; }
.kb-cookie[hidden] { display: none; }
.kb-cookie__row { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.kb-cookie p { margin: 0; font-size: .88rem; max-width: 66ch; }
.kb-cookie__btns { display: flex; gap: 10px; }

.kb-404 { padding: 100px 0; }

@media (max-width: 900px) {
  .kb-index, .kb-grid, .kb-promo__grid, .kb-foot__cols { grid-template-columns: minmax(0, 1fr); }
  .kb-longread { columns: 1; }
  .kb-foot__cols { gap: 22px; }
}

@media (max-width: 560px) {
  body { font-size: 16px; }
  .kb-nav { justify-content: flex-start; gap: 8px 16px; }
  .kb-tile { grid-template-columns: minmax(0, 1fr); }
  .kb-specs { grid-template-columns: minmax(0, 1fr); gap: 2px; }
  .kb-specs dd { margin-bottom: 10px; }
  .kb-duo { grid-template-columns: minmax(0, 1fr); }
  .kb-form { padding: 18px; }
}

.kb-needs { margin: 0; display: grid; grid-template-columns: minmax(0, 260px) minmax(0, 1fr); gap: 0 32px; }
.kb-needs dt { font-weight: 650; padding: 16px 0; border-top: 1px solid var(--color-border); }
.kb-needs dd { margin: 0; padding: 16px 0; border-top: 1px solid var(--color-border); color: var(--color-muted); font-size: .95rem; }
@media (max-width: 720px) {
  .kb-needs { grid-template-columns: minmax(0, 1fr); }
  .kb-needs dd { border-top: 0; padding-top: 0; }
}