:root {
  --rail: #0d0d0d;
  --accent: #ff6a00;
  --canvas: #f2f2f2;
  --card: #ffffff;
  --ink: #171717;
  --mute: #5a5a5a;
  --line: #d6d6d6;
  --head: #141414;
  --soft: #ececec;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: var(--canvas);
  line-height: 1.65;
  font-size: 15px;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

img,
svg {
  display: block;
}

.shell {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
}

.rail {
  background: var(--rail);
  color: #e6e6e6;
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 22px 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  border-right: 1px solid #1f1f1f;
}

.brand {
  color: #fff;
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 8px 10px;
  align-items: center;
}

.brand:hover {
  text-decoration: none;
}

.brand svg {
  grid-row: 1 / span 2;
}

.brand-name {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1;
}

.brand-sub {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #b3b3b3;
}

.kicker {
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #8a8a8a;
}

.rail-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.rail-nav a {
  color: #d2d2d2;
  padding: 9px 10px;
  border-left: 3px solid transparent;
  display: flex;
  align-items: center;
  gap: 8px;
}

.rail-nav a:hover {
  color: #fff;
  text-decoration: none;
  background: #171717;
}

.rail-nav a.is-current {
  color: #fff;
  border-left-color: var(--accent);
  background: #151515;
}

.rail-meta {
  margin-top: auto;
  border-top: 1px solid #262626;
  padding-top: 14px;
  font-size: 12px;
  color: #9a9a9a;
}

.rail-meta time {
  display: block;
  margin-top: 4px;
  color: #fff;
  font-variant-numeric: tabular-nums;
}

.canvas {
  min-width: 0;
  background: var(--canvas);
}

.hero,
.block,
.site-foot {
  padding: 28px 36px;
}

.hero {
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(260px, 0.8fr);
  gap: 22px;
  align-items: start;
}

.hero h1 {
  font-size: 28px;
  line-height: 1.3;
  margin: 8px 0 12px;
}

.lead,
.block p,
.faq-item p,
.news-item p,
.article p {
  margin-bottom: 12px;
  color: var(--ink);
}

.note {
  font-size: 13px;
  color: var(--mute);
  border-left: 3px solid var(--accent);
  padding: 8px 10px;
  background: #fff7f0;
  margin: 12px 0 16px;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  padding: 10px 16px;
  border: 1px solid var(--accent);
  border-radius: 2px;
  font-size: 14px;
  font-weight: 700;
}

.btn:hover {
  text-decoration: none;
  background: #e25f00;
}

.btn-ghost {
  background: #fff;
  color: var(--ink);
  border-color: #cfcfcf;
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 16px;
}

.pack-list {
  display: grid;
  gap: 8px;
  font-size: 13px;
}

.pack-list span {
  display: block;
  color: var(--mute);
}

.file {
  font-variant-numeric: tabular-nums;
  color: var(--ink);
  background: var(--soft);
  padding: 1px 5px;
}

.block-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.block-head h2 {
  font-size: 20px;
  line-height: 1.35;
}

.mark {
  width: 28px;
  height: 28px;
  background: var(--head);
  color: var(--accent);
  display: grid;
  place-items: center;
  flex: 0 0 28px;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
}

.spec {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border: 1px solid var(--line);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

.spec th,
.spec td {
  padding: 8px 10px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.spec th {
  background: var(--head);
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.spec tr:last-child td {
  border-bottom: 0;
}

.spec td:nth-child(n + 2) {
  font-variant-numeric: tabular-nums;
}

.news-list {
  list-style: none;
  background: #fff;
  border: 1px solid var(--line);
}

.news-item {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
}

.news-item:last-child {
  border-bottom: 0;
}

.news-item time {
  display: block;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 4px;
  font-variant-numeric: tabular-nums;
}

.news-item h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.faq-list {
  display: grid;
  gap: 10px;
}

.faq-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 12px 14px;
}

.faq-item h3 {
  font-size: 15px;
  margin-bottom: 6px;
}

.timeline {
  list-style: none;
  margin: 6px 0 0 14px;
  padding: 0 0 0 28px;
  border-left: 2px solid var(--accent);
}

.timeline li {
  position: relative;
  padding: 0 0 18px 8px;
}

.timeline li:last-child {
  padding-bottom: 0;
}

.dot {
  position: absolute;
  left: -43px;
  top: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  display: grid;
  place-items: center;
  font-variant-numeric: tabular-nums;
}

.timeline h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.risk {
  background: #fff;
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  padding: 16px 18px;
}

.mt-s { margin-top: 12px; }
.mt-m { margin-top: 14px; }
.mt-l { margin-top: 16px; }

.cta-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 14px 16px;
}

.site-foot {
  border-top: 1px solid var(--line);
  background: #fff;
  color: var(--mute);
  font-size: 13px;
}

.foot-nav {
  display: flex;
  gap: 16px;
  margin-bottom: 10px;
}

.foot-nav a {
  color: var(--ink);
}

.foot-nav a.is-current {
  color: var(--accent);
}

.foot-lines p {
  margin-bottom: 6px;
}

.article h2 {
  font-size: 20px;
  margin: 22px 0 10px;
}

.article h1 {
  font-size: 28px;
  margin: 8px 0 14px;
}

@media (max-width: 960px) {
  .shell {
    grid-template-columns: 1fr;
  }

  .rail {
    position: relative;
    height: auto;
    display: grid;
    grid-template-columns: 1fr;
  }

  .rail-meta {
    margin-top: 0;
  }

  .rail-nav {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .hero,
  .block,
  .site-foot {
    padding: 20px 16px;
  }

  .hero-grid,
  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }
}