/* ─── NAV ─────────────────────────────────────────────── */
nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(17,17,16,.94);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(10px);
  padding: 0 24px;
}
.nav-inner {
  max-width: var(--max-w); margin: 0 auto;
  display: flex; align-items: center;
  justify-content: space-between; height: 48px;
}
.nav-logo {
  display: inline-flex; align-items: center;
  font-family: var(--mono); font-size: 13px; font-weight: 400;
  line-height: 1.25;
  color: var(--t1); text-decoration: none; letter-spacing: 0;
}
.logo-caret {
  width: 0.58em; height: 1.25em;
  background: var(--violet);
  flex-shrink: 0;
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}
.hero-byline .logo-caret { animation: blink 1s step-end infinite; }
.nav-links { display: flex; gap: 4px; list-style: none; }
.nav-links a, .nav-links button {
  display: block; font-size: 15px; font-weight: 500; color: var(--t1);
  text-decoration: none; padding: 5px 10px; border-radius: 6px;
  transition: color .12s, background .12s;
  background: transparent; border: none; cursor: pointer;
  font-family: inherit; line-height: inherit;
}
.nav-links a:hover, .nav-links button:hover { color: var(--t1); background: var(--hover); }

/* ─── LAYOUT ──────────────────────────────────────────── */
.page-section { padding: 120px 24px; }
.inner        { max-width: var(--max-w); margin: 0 auto; }

/* ─── BLOCK LABEL ─────────────────────────────────────── */
.block-label  { display: flex; align-items: center; gap: 10px; margin-bottom: 28px; }
.block-num    { font-size: 10px; font-weight: 700; color: var(--t3); text-transform: uppercase; letter-spacing: 1.5px; font-family: var(--mono); }
.block-rule   { width: 48px; height: 1px; background: var(--border); }

.sect-blue   .block-num  { color: color-mix(in oklab, var(--t1) 65%, var(--blue)); }
.sect-blue   .block-rule { background: color-mix(in oklab, var(--border) 40%, var(--blue) 60%); }
.sect-amber  .block-num  { color: color-mix(in oklab, var(--t1) 62%, var(--amber)); }
.sect-amber  .block-rule { background: color-mix(in oklab, var(--border) 35%, var(--amber) 65%); }
.sect-green  .block-num  { color: color-mix(in oklab, var(--t1) 65%, var(--green)); }
.sect-green  .block-rule { background: color-mix(in oklab, var(--border) 38%, var(--green) 62%); }
.sect-purple .block-num  { color: color-mix(in oklab, var(--t1) 62%, var(--purple)); }
.sect-purple .block-rule { background: color-mix(in oklab, var(--border) 35%, var(--purple) 65%); }

/* ─── КНОПКИ ──────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 11px 22px; border-radius: 8px; border: 1.5px solid;
  font-family: inherit; font-size: 15px; font-weight: 600;
  letter-spacing: -0.1px; text-decoration: none; cursor: pointer;
  transition: background .12s, color .12s, border-color .12s;
}
.btn-primary { background: var(--t1); color: var(--bg); border-color: var(--t1); }
.btn-primary:hover { background: var(--t2); border-color: var(--t2); }
.btn-ghost   { background: transparent; color: var(--t2); border-color: var(--border); }
.btn-ghost:hover { color: var(--t1); border-color: var(--t3); }

/* ─── CARD COMPONENTS ─────────────────────────────────── */
.card-idx {
  font-size: 9px; font-weight: 700; color: var(--t3);
  text-transform: uppercase; letter-spacing: 1.2px;
  font-family: var(--mono); display: block;
}

.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }

.card-ls {
  background: var(--card);
  border-radius: var(--r); padding: 22px 20px;
  border: 1px solid var(--border);
  display: grid; grid-template-columns: auto 1fr; column-gap: 10px; align-items: baseline;
}
.card-ls .card-idx { margin-bottom: 0; }
.card-ls h4        { margin-bottom: 0; }
.card-ls p         { grid-column: 2 / -1; margin-top: 10px; font-size: 17px; line-height: 1.78; color: var(--t2); margin-bottom: 0; }

.ls-neutral { background: var(--hover); }
.ls-neutral .card-idx { color: var(--t3); }

.ls-blue   { border-left: 2px solid color-mix(in oklab, var(--border) 20%, var(--blue) 80%); }
.ls-blue   .card-idx { color: var(--blue); }
.ls-green  { border-left: 2px solid color-mix(in oklab, var(--border) 20%, var(--green) 80%); }
.ls-green  .card-idx { color: var(--green); }
.ls-amber  { border-left: 2px solid color-mix(in oklab, var(--border) 20%, var(--amber) 80%); }
.ls-amber  .card-idx { color: var(--amber); }
.ls-purple { border-left: 2px solid color-mix(in oklab, var(--border) 20%, var(--purple) 80%); }
.ls-purple .card-idx { color: var(--purple); }

.card-ls.dim { background: var(--card); border-color: var(--border); border-left: 2px solid var(--red); }
.card-ls.dim .card-idx { color: var(--red); }

/* ─── VIZ DIVIDER ─────────────────────────────────────── */
.viz-divider {
  display: flex; align-items: center; gap: 16px; margin: 52px 0;
}
.viz-divider-rule  { flex: 1; height: 1px; background: var(--border); }
.viz-divider-label { font-size: 10px; font-weight: 700; color: var(--t3); text-transform: uppercase; letter-spacing: 1.2px; font-family: var(--mono); white-space: nowrap; }

.final-note { border-top: 1px solid var(--border); padding-top: 32px; margin-top: 52px; text-align: center; }
.final-note p { font-size: 15px; color: var(--t2); font-style: italic; max-width: 540px; margin: 0 auto; }

/* ─── LOGOUT FORM ─────────────────────────────────────── */
.logout-form { display: inline-flex; margin: 0; }