/* ============================================================
   Symbiosis Lab — общие стили продуктового лендинга (§7)
   Подключается ПОСЛЕ symbiosis.css.
   ============================================================ */

/* ===== header ===== */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(245,242,237,0.82); backdrop-filter: saturate(140%) blur(12px); -webkit-backdrop-filter: saturate(140%) blur(12px); border-bottom: 1px solid transparent; transition: border-color .2s, box-shadow .2s; }
.site-header.scrolled { border-bottom-color: var(--border-subtle); box-shadow: var(--shadow-sm); }
.nav { display: flex; align-items: center; gap: var(--space-8); height: 68px; position: relative; }
.brand { font-family: var(--font-display); font-style: italic; font-weight: 600; font-size: var(--text-xl); letter-spacing: -0.01em; color: var(--text-primary); white-space: nowrap; }
.brand .lab { font-style: normal; font-family: var(--font-mono); font-weight: 500; font-size: 0.62em; letter-spacing: .12em; text-transform: uppercase; color: var(--accent-bronze-deep); position: relative; top: -0.18em; margin-left: 2px; }
.nav-links { display: flex; align-items: center; gap: var(--space-2); margin-left: var(--space-4); }
.nav-link { font-size: var(--text-sm); font-weight: 500; color: var(--text-secondary); padding: 8px 12px; border-radius: var(--radius-md); display: inline-flex; align-items: center; gap: 6px; transition: color .15s, background .15s; }
.nav-link:hover { color: var(--text-primary); background: var(--surface-sunken); }
.nav-right { margin-left: auto; display: flex; align-items: center; gap: var(--space-4); }
.lang-toggle { display: inline-flex; background: var(--surface-sunken); border-radius: var(--radius-full); padding: 3px; }
.lang-toggle button { border: 0; background: transparent; font-family: var(--font-mono); font-size: var(--text-xs); font-weight: 500; padding: 5px 11px; border-radius: var(--radius-full); color: var(--text-tertiary); }
.lang-toggle button[aria-pressed="true"] { background: var(--surface-elevated); color: var(--text-primary); box-shadow: var(--shadow-xs); }
@media (max-width: 860px){ .nav-links{ display:none; } }

/* ===== mega menu ===== */
.nav-item { position: static; }
.nav-item .caret { width: 12px; height: 12px; transition: transform .2s; }
.nav-item[data-open="true"] .caret { transform: rotate(180deg); }
.mega {
  position: absolute; top: calc(100% + 14px); left: 50%; transform: translateX(-50%) translateY(-6px);
  width: min(1080px, 94vw);
  background: var(--surface-elevated); border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl); box-shadow: var(--shadow-xl);
  padding: var(--space-8); opacity: 0; visibility: hidden; transition: opacity .18s, transform .18s, visibility .18s;
}
.nav-item[data-open="true"] .mega { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.mega-intro { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: var(--space-6); padding-bottom: var(--space-5); border-bottom: 1px solid var(--border-subtle); }
.mega-intro .ttl { font-family: var(--font-display); font-style: italic; font-weight: 600; font-size: var(--text-lg); }
.mega-intro .ttl small { font-family: var(--font-mono); font-style: normal; font-size: var(--text-xs); color: var(--text-tertiary); margin-left: var(--space-3); letter-spacing: .04em; }
.mega-legend { display: flex; gap: var(--space-4); font-family: var(--font-mono); font-size: var(--text-xs); color: var(--text-tertiary); }
.mega-legend span { display: inline-flex; align-items: center; gap: 6px; }
.mega-legend i { width: 6px; height: 6px; border-radius: 50%; }
.mega-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-2) var(--space-8); }
.mega-col h4 { font-family: var(--font-mono); font-size: var(--text-xs); text-transform: uppercase; letter-spacing: .1em; color: var(--text-tertiary); margin: 0 0 var(--space-3); font-weight: 500; display: flex; align-items: center; gap: var(--space-3); }
.mega-col h4::after { content:""; flex: 1; height: 1px; background: var(--border-subtle); }
.mega-link { display: flex; flex-direction: column; gap: 3px; padding: 9px 12px; margin: 0 -12px; border-radius: var(--radius-md); transition: background .15s; }
.mega-link:hover { background: var(--surface-sunken); }
.mm-name { font-family: var(--font-display); font-style: italic; font-weight: 600; font-size: var(--text-base); letter-spacing: -0.01em; line-height: 1.1; color: var(--text-primary); display: inline-flex; align-items: center; gap: 8px; transition: color .15s; }
.mega-link:hover .mm-name { color: var(--accent-bronze-deep); }
.mm-name .suffix { font-family: var(--font-mono); font-style: normal; font-weight: 500; font-size: .7em; position: relative; top: -.05em; color: var(--text-secondary); }
.mm-dot { width: 6px; height: 6px; border-radius: 50%; flex: none; }
.mm-dot.live { background: var(--success); }
.mm-dot.beta { background: var(--warning); }
.mm-dot.soon { background: var(--accent-bronze); }
.mm-desc { font-size: var(--text-xs); color: var(--text-tertiary); line-height: 1.45; }
.mega-foot { display: flex; justify-content: space-between; align-items: center; margin-top: var(--space-6); padding-top: var(--space-5); border-top: 1px solid var(--border-subtle); gap: var(--space-4); flex-wrap: wrap; }
.mega-foot span { font-size: var(--text-sm); color: var(--text-secondary); }
.mega-foot .mf-actions { display: flex; gap: var(--space-2); }
.mega-foot .btn-ask { background: var(--brand-warm-subtle); color: var(--accent-bronze-deep); border-color: transparent; }
.mega-foot .btn-ask:hover { background: var(--accent-bronze-subtle); }

/* ===== breadcrumb ===== */
.crumb { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--text-tertiary); display: flex; flex-wrap: wrap; gap: var(--space-2); align-items: center; line-height: 1.6; margin-bottom: var(--space-8); }
.crumb a { color: var(--text-tertiary); }
.crumb a:hover { color: var(--accent-bronze-deep); }

/* ===== hero ===== */
.lp-hero { padding-block: var(--space-12) var(--space-16); }
.lp-hero .eyebrow { display: inline-flex; }
.lp-wordmark { font-family: var(--font-display); font-style: italic; font-weight: 600; font-size: var(--text-2xl); letter-spacing: -0.01em; margin-top: var(--space-4); display: flex; align-items: center; gap: var(--space-3); flex-wrap: wrap; }
.lp-wordmark .suffix { font-family: var(--font-mono); font-style: normal; font-weight: 500; font-size: .68em; position: relative; top: -.06em; color: var(--text-secondary); }
.lp-hero h1 { font-family: var(--font-display); font-style: italic; font-weight: 600; letter-spacing: -0.01em; line-height: 1.06; font-size: clamp(2.2rem, 4.2vw, 3.2rem); margin-top: var(--space-5); max-width: 22ch; }
.lp-hero h1 em { color: var(--accent-bronze-deep); }
.lp-hero .lead { max-width: 56ch; margin-top: var(--space-6); }
.lp-meta { display: flex; align-items: center; gap: var(--space-5); margin-top: var(--space-8); flex-wrap: wrap; }
.lp-meta .proofnum { font-family: var(--font-mono); font-size: var(--text-sm); color: var(--accent-bronze-deep); display: inline-flex; align-items: center; gap: var(--space-3); }
.lp-meta .proofnum::before { content:""; width: 1px; height: 18px; background: var(--border-default); }
.lp-cta { display: flex; gap: var(--space-3); margin-top: var(--space-8); flex-wrap: wrap; }

/* ===== sections ===== */
.lp-section { padding-block: var(--space-16); }
.lp-section.alt { background: var(--surface-sunken); }
.lp-head { max-width: 720px; margin-bottom: var(--space-10); display: flex; flex-direction: column; gap: var(--space-4); }
.lp-head h2 { font-family: var(--font-display); font-style: italic; font-weight: 600; letter-spacing: -0.01em; line-height: 1.1; font-size: var(--text-3xl); }

/* problem */
.problem-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-12); align-items: center; }
.problem-quote { font-family: var(--font-reading); font-size: clamp(1.4rem, 2.6vw, 1.9rem); line-height: 1.5; color: var(--text-primary); max-width: 24ch; }
.problem-side { font-family: var(--font-reading); font-size: var(--text-lg); line-height: 1.65; color: var(--text-secondary); }
.problem-side strong { color: var(--text-primary); }

/* steps */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-5); }
.step { padding: var(--space-6); position: relative; }
.step .sn { font-family: var(--font-mono); font-size: var(--text-sm); color: var(--accent-bronze); }
.step h3 { font-family: var(--font-display); font-style: italic; font-weight: 600; font-size: var(--text-lg); margin: var(--space-3) 0 var(--space-2); }
.step p { font-size: var(--text-sm); color: var(--text-secondary); line-height: 1.55; }
.step::after { content: "→"; position: absolute; right: -14px; top: 50%; color: var(--border-default); }
.step:last-child::after { display: none; }

/* features */
.feat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-5); }
.feat { padding: var(--space-6); display: flex; flex-direction: column; gap: var(--space-3); }
.feat .ic { width: 38px; height: 38px; border-radius: var(--radius-md); background: var(--brand-warm-subtle); color: var(--accent-bronze-deep); display: grid; place-items: center; }
.feat h3 { font-family: var(--font-sans); font-weight: 600; font-size: var(--text-base); }
.feat p { font-size: var(--text-sm); color: var(--text-secondary); line-height: 1.55; }

/* differentiation */
.diff-points { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-8); }
.diff-point { display: flex; gap: var(--space-4); }
.diff-point .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent-bronze); margin-top: 8px; flex: none; }
.diff-point strong { display: block; margin-bottom: 2px; }
.diff-point span { color: var(--text-secondary); font-size: var(--text-sm); line-height: 1.55; }

/* proofs */
.proof-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-5); }
.proof-card { padding: var(--space-6); }
.proof-card .pn { font-family: var(--font-mono); font-variant-numeric: tabular-nums; font-size: var(--text-3xl); color: var(--text-primary); letter-spacing: -0.02em; }
.proof-card .pl { font-size: var(--text-sm); color: var(--text-secondary); margin-top: var(--space-2); line-height: 1.45; }

/* offer */
.offer-card { background: var(--surface-elevated); border: 1px solid var(--border-subtle); border-radius: var(--radius-2xl); padding: var(--space-12); box-shadow: var(--shadow-md); }
.offer-eq { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-6); }
.offer-item .lbl { font-family: var(--font-mono); font-size: var(--text-xs); text-transform: uppercase; letter-spacing: .08em; color: var(--accent-bronze); }
.offer-item h4 { font-family: var(--font-display); font-style: italic; font-weight: 600; font-size: var(--text-lg); margin: var(--space-3) 0 var(--space-2); }
.offer-item p { font-size: var(--text-sm); color: var(--text-secondary); line-height: 1.55; }
.offer-rr { margin-top: var(--space-8); padding-top: var(--space-6); border-top: 1px solid var(--border-subtle); display: flex; gap: var(--space-4); align-items: center; flex-wrap: wrap; }
.offer-rr .pill { font-size: var(--text-sm); padding: 6px 14px; }
.offer-rr span { font-size: var(--text-sm); color: var(--text-secondary); }

/* FAQ */
.faq-list { max-width: 820px; margin-inline: auto; border-top: 1px solid var(--border-subtle); }
.faq-item { border-bottom: 1px solid var(--border-subtle); }
.faq-q { width: 100%; text-align: left; background: none; border: 0; padding: var(--space-6) 0; display: flex; justify-content: space-between; align-items: center; gap: var(--space-6); font-family: var(--font-display); font-style: italic; font-weight: 600; font-size: var(--text-xl); color: var(--text-primary); }
.faq-q .pm { flex: none; width: 24px; height: 24px; position: relative; }
.faq-q .pm::before, .faq-q .pm::after { content:""; position: absolute; background: var(--accent-bronze); transition: transform .2s; }
.faq-q .pm::before { left: 4px; right: 4px; top: 11px; height: 2px; }
.faq-q .pm::after { top: 4px; bottom: 4px; left: 11px; width: 2px; }
.faq-item[data-open="true"] .pm::after { transform: scaleY(0); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .25s ease; }
.faq-a-inner { padding-bottom: var(--space-6); font-family: var(--font-reading); font-size: var(--text-lg); line-height: 1.6; color: var(--text-secondary); max-width: 64ch; }

/* final CTA */
.lp-final { background: var(--text-primary); color: var(--text-inverse); border-radius: var(--radius-2xl); padding: var(--space-24) var(--space-16); text-align: center; }
.lp-final h2 { font-family: var(--font-display); font-style: italic; font-weight: 600; font-size: clamp(1.8rem, 3.4vw, 2.6rem); letter-spacing: -0.01em; line-height: 1.12; max-width: 20ch; margin-inline: auto; }
.lp-final .sub { color: rgba(245,242,237,.7); font-family: var(--font-mono); font-size: var(--text-sm); margin-top: var(--space-5); }
.lp-final .cta-row { display: flex; gap: var(--space-3); justify-content: center; margin-top: var(--space-8); flex-wrap: wrap; }
.lp-final .btn-secondary { background: transparent; border-color: rgba(245,242,237,.3); color: var(--text-inverse); }
.lp-final .btn-secondary:hover { border-color: rgba(245,242,237,.6); background: rgba(245,242,237,.06); }

/* founder teaser */
.founder-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: var(--space-12); align-items: center; }
.founder-portrait { aspect-ratio: 4/5; border-radius: var(--radius-xl); border: 1px solid var(--border-default); background: repeating-linear-gradient(135deg, transparent 0 14px, rgba(184,133,93,.06) 14px 15px), var(--surface-elevated); display: grid; place-content: center; gap: var(--space-2); text-align: center; }
.founder-portrait .ph { font-family: var(--font-mono); font-size: var(--text-xs); text-transform: uppercase; letter-spacing: .12em; color: var(--text-tertiary); }
.method-chip { font-family: var(--font-mono); font-size: var(--text-xs); padding: 6px 12px; border-radius: var(--radius-full); background: var(--surface-sunken); color: var(--text-secondary); display: inline-flex; }
.chip-row { display: flex; flex-wrap: wrap; gap: var(--space-2); }

/* footer */
.site-footer { border-top: 1px solid var(--border-subtle); padding-block: var(--space-12) var(--space-8); }
.foot-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: var(--space-8); }
.foot-brand .brand { font-size: var(--text-xl); }
.foot-brand p { font-size: var(--text-sm); color: var(--text-secondary); line-height: 1.6; margin-top: var(--space-4); max-width: 36ch; }
.foot-col h4 { font-family: var(--font-mono); font-size: var(--text-xs); text-transform: uppercase; letter-spacing: .1em; color: var(--text-tertiary); margin: 0 0 var(--space-4); font-weight: 500; }
.foot-col ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: var(--space-3); }
.foot-col a { font-size: var(--text-sm); color: var(--text-secondary); }
.foot-col a:hover { color: var(--accent-bronze-deep); }
.foot-bottom { display: flex; justify-content: space-between; margin-top: var(--space-12); padding-top: var(--space-6); border-top: 1px solid var(--border-subtle); flex-wrap: wrap; gap: var(--space-4); }
.foot-bottom .legal { font-size: var(--text-xs); color: var(--text-tertiary); font-family: var(--font-mono); }

/* responsive */
@media (max-width: 900px){
  .problem-grid, .founder-grid { grid-template-columns: 1fr; gap: var(--space-8); }
  .steps, .proof-cards, .offer-eq { grid-template-columns: repeat(2, 1fr); }
  .step::after { display: none; }
  .feat-grid { grid-template-columns: repeat(2, 1fr); }
  .diff-points { grid-template-columns: 1fr; gap: var(--space-5); }
  .foot-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px){
  .steps, .proof-cards, .offer-eq, .feat-grid { grid-template-columns: 1fr; }
  .offer-card, .lp-final { padding: var(--space-8) var(--space-6); }
  .foot-grid { grid-template-columns: 1fr; }
}