:root {
  --color-bg: #ffffff;
  --color-raise: #f7f7fa;
  --color-text: #16181f;
  --color-muted: #61667a;
  --color-accent: #4f46e5;
  --color-accent-deep: #3f37c4;
  --color-border: #e4e5ec;
  --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: 1080px;
  --radius: 12px;
}

*, *::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: 1.64;
}

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: 3px; }

h1, h2, h3 { font-family: var(--font-head); font-weight: 600; line-height: 1.18; margin: 0 0 .55em; }
h1 { font-size: clamp(2rem, 5.2vw, 3rem); letter-spacing: -.025em; }
h2 { font-size: clamp(1.35rem, 3vw, 1.9rem); letter-spacing: -.02em; }
h3 { font-size: 1.08rem; }
p { margin: 0 0 1.05em; }
ul, ol { margin: 0 0 1.05em; padding-left: 1.2em; }
li { margin-bottom: .42em; }
li::marker { color: var(--color-accent); }

.nb-wrap { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 22px; }
.nb-over { font-size: .72rem; letter-spacing: 2px; text-transform: uppercase; color: var(--color-muted); margin: 0 0 .9em; }
.nb-skip { position: absolute; left: -9999px; }
.nb-skip:focus { left: 12px; top: 12px; background: #fff; padding: 8px 14px; z-index: 60; }

.nb-head { border-bottom: 1px solid var(--color-border); padding: 22px 0 16px; text-align: center; }
.nb-head__logo { display: inline-block; font-weight: 700; font-size: 1.15rem; letter-spacing: -.03em; color: var(--color-text); text-decoration: none; margin-bottom: 10px; }
.nb-head__logo b { color: var(--color-accent); }
.nb-nav { display: flex; justify-content: center; flex-wrap: wrap; gap: 4px 10px; font-size: .88rem; }
.nb-nav a { color: var(--color-muted); text-decoration: none; padding: 4px 10px; border-radius: 999px; }
.nb-nav a:hover { color: var(--color-accent); background: var(--color-raise); }
.nb-nav span { color: var(--color-border); align-self: center; }

.nb-hero { padding: 58px 0 42px; border-bottom: 1px solid var(--color-border); }
.nb-hero__row { display: flex; align-items: flex-end; justify-content: space-between; gap: 26px; flex-wrap: wrap; }
.nb-hero h1 { margin: 0; max-width: 18ch; }
.nb-hero__meta { margin-top: 20px; font-size: .88rem; color: var(--color-muted); }

.nb-btn {
  display: inline-block; padding: 12px 24px; border-radius: 999px;
  background: var(--color-accent); border: 1px solid var(--color-accent);
  color: #fff; text-decoration: none; font-size: .93rem; font-weight: 550; cursor: pointer;
}
.nb-btn:hover { background: var(--color-accent-deep); border-color: var(--color-accent-deep); color: #fff; }
.nb-btn--ghost { background: #fff; color: var(--color-accent); }
.nb-btn--ghost:hover { background: #fff; color: var(--color-accent-deep); }

.nb-section { padding: 48px 0; border-bottom: 1px solid var(--color-border); }
.nb-section__head { max-width: 62ch; margin-bottom: 26px; }
.nb-section__head p { margin: 0; color: var(--color-muted); }

.nb-rows { display: grid; gap: 18px; }
.nb-row { border: 1px solid var(--color-border); border-radius: var(--radius); padding: 24px; display: grid; grid-template-columns: 64px minmax(0, 1fr) auto; gap: 20px; align-items: start; }
.nb-row img { width: 64px; height: 64px; border-radius: var(--radius); border: 1px solid var(--color-border); }
.nb-row h3 { margin-bottom: .3em; }
.nb-row p { margin: 0 0 .7em; color: var(--color-muted); font-size: .94rem; }
.nb-row__links { display: flex; gap: 16px; flex-wrap: wrap; font-size: .87rem; }
.nb-pill { display: inline-block; border: 1px solid var(--color-border); border-radius: 999px; padding: 4px 12px; font-size: .74rem; letter-spacing: 1px; text-transform: uppercase; color: var(--color-muted); white-space: nowrap; }

.nb-method { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 34px; background: var(--color-raise); border-radius: var(--radius); padding: 32px; }
.nb-method h3 { margin-bottom: .3em; }
.nb-method p { margin: 0; font-size: .95rem; }

.nb-tablewrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; min-width: 640px; }
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; }

.nb-faq__item { border-bottom: 1px solid var(--color-border); padding: 18px 0; }
.nb-faq__item:first-child { border-top: 1px solid var(--color-border); }
.nb-faq__item h3 { margin-bottom: .25em; }
.nb-faq__item p { margin: 0; color: var(--color-muted); font-size: .95rem; }

.nb-promo__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; align-items: start; }
.nb-price { font-size: 1.55rem; font-weight: 650; margin: 0 0 .3em; }
.nb-specs { margin: 0 0 1.1em; display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 8px 16px; }
.nb-specs dt { font-size: .76rem; letter-spacing: 1px; text-transform: uppercase; color: var(--color-muted); }
.nb-specs dd { margin: 0; font-size: .95rem; }
.nb-fine { font-size: .86rem; color: var(--color-muted); }

.nb-form { border: 1px solid var(--color-border); border-radius: var(--radius); padding: 26px; background: var(--color-raise); }
.nb-form label { display: block; font-size: .8rem; color: var(--color-muted); margin-bottom: 6px; }
.nb-form input, .nb-form textarea {
  width: 100%; padding: 12px 14px; margin-bottom: 16px; border: 1px solid var(--color-border);
  border-radius: var(--radius); font: inherit; font-size: .95rem; background: #fff; color: var(--color-text);
}
.nb-form textarea { min-height: 104px; resize: vertical; }
.nb-form__hp { position: absolute; left: -9999px; }
.nb-form__legal { font-size: .84rem; color: var(--color-muted); margin: 12px 0 0; }

.nb-contact { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; margin: 0; }
.nb-contact dt { font-size: .74rem; letter-spacing: 1.6px; text-transform: uppercase; color: var(--color-muted); }
.nb-contact dd { margin: .2em 0 1em; }

.nb-article { padding: 44px 0 22px; }
.nb-article__head { max-width: 66ch; margin-bottom: 26px; }
.nb-article__body { max-width: 68ch; }
.nb-article__body h2 { margin-top: 1.65em; }
.nb-article__body img { border-radius: var(--radius); border: 1px solid var(--color-border); }
.nb-duo { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; margin: 26px 0; }

.nb-legal { padding: 44px 0; max-width: 70ch; }
.nb-legal h2 { margin-top: 1.7em; font-size: 1.18rem; }

.nb-foot { padding: 34px 0 40px; }
.nb-foot__cols { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 26px; }
.nb-foot p { margin: 0 0 .4em; font-size: .9rem; color: var(--color-muted); }
.nb-foot__links { display: flex; flex-wrap: wrap; gap: 6px 10px; font-size: .89rem; }
.nb-foot__links span { color: var(--color-border); }
.nb-foot__bottom { margin-top: 26px; font-size: .82rem; color: var(--color-muted); }

.nb-cookie { position: fixed; left: 14px; right: 14px; bottom: 14px; z-index: 50; background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius); padding: 18px; }
.nb-cookie[hidden] { display: none; }
.nb-cookie__row { display: flex; align-items: center; justify-content: space-between; gap: 18px; flex-wrap: wrap; max-width: var(--container); margin: 0 auto; }
.nb-cookie p { margin: 0; font-size: .88rem; max-width: 60ch; }
.nb-cookie__btns { display: flex; gap: 10px; }

.nb-404 { padding: 92px 0; }

@media (max-width: 880px) {
  .nb-method, .nb-promo__grid, .nb-contact, .nb-foot__cols { grid-template-columns: minmax(0, 1fr); }
  .nb-row { grid-template-columns: 56px minmax(0, 1fr); }
  .nb-row img { width: 56px; height: 56px; }
  .nb-pill { grid-column: 1 / -1; justify-self: start; }
}

@media (max-width: 560px) {
  body { font-size: 16px; }
  .nb-row { grid-template-columns: minmax(0, 1fr); padding: 18px; }
  .nb-specs { grid-template-columns: minmax(0, 1fr); gap: 2px; }
  .nb-specs dd { margin-bottom: 10px; }
  .nb-duo { grid-template-columns: minmax(0, 1fr); }
  .nb-method, .nb-form { padding: 18px; }
}

.nb-decide { list-style: none; margin: 0; padding: 0; counter-reset: nbd; }
.nb-decide li { counter-increment: nbd; margin: 0; padding: 18px 0 18px 46px; border-bottom: 1px solid var(--color-border); position: relative; font-size: .97rem; color: var(--color-muted); }
.nb-decide li:first-child { border-top: 1px solid var(--color-border); }
.nb-decide li::before { content: counter(nbd, decimal-leading-zero); position: absolute; left: 0; top: 18px; font-size: .8rem; font-weight: 650; color: var(--color-accent); letter-spacing: 1px; }
.nb-decide b { color: var(--color-text); font-weight: 600; }