/* Pokrasim Engineering — Solution page (Concept Light) */

/* --- Type / configuration blocks --- */
.sp-type-list {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
  align-items: stretch;
}
.sp-type-list--compact { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
@media (min-width: 1024px) {
  .sp-type-list:not(.sp-type-list--compact) {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
.sp-type-block {
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--white);
  height: 100%;
  min-width: 0;
  transition: border-color 0.25s ease;
}
.sp-type-block:hover,
.sp-type-block:focus-within {
  border-color: rgba(255, 107, 0, 0.35);
}
.sp-type-block--compact { padding: 22px; }
.sp-section--surface .sp-type-block {
  background: var(--white);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}
.sp-type-block__title {
  margin: 0 0 12px;
  font-size: clamp(1.125rem, 1.5vw, 1.375rem);
  font-weight: 600;
  letter-spacing: -0.02em;
}
.sp-type-block__lead {
  margin: 0 0 18px;
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.65;
}
.sp-type-block__specs {
  display: grid;
  gap: 12px;
  margin: 0 0 20px;
}
.sp-type-block__specs div {
  display: grid;
  grid-template-columns: 132px 1fr;
  gap: 14px;
  font-size: 0.9375rem;
  line-height: 1.55;
}
.sp-type-block__specs dt { font-weight: 600; color: var(--text-main); }
.sp-type-block__specs dd { margin: 0; color: var(--text-muted); }

/* --- Speakable (product pillar) --- */
.sp-speakable {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--white);
  padding: clamp(24px, 4vw, 36px) 0;
}
.sp-speakable__tag {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 10px;
}
.sp-speakable__text {
  margin: 0;
  font-size: clamp(1rem, 1.6vw, 1.125rem);
  line-height: 1.65;
  max-width: none;
}

/* --- Engineering approach (full) --- */
.pk-engineering-approach .pk-eng-approach__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
}
.pk-eng-approach__step {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 16px;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--white);
}
.pk-eng-approach__step:last-child { border-bottom: none; }
.pk-eng-approach__num {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  padding-top: 2px;
}
.pk-eng-approach__name {
  margin: 0 0 6px;
  font-size: 1.0625rem;
  font-weight: 600;
}
.pk-eng-approach__text {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--text-secondary);
}
.pk-eng-approach__cta { margin-top: 24px; }

/* --- Engineering risks --- */
.pk-risks-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.pk-risks-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
  line-height: 1.65;
  min-width: 640px;
}
.pk-risks-table__caption {
  caption-side: top;
  text-align: left;
  font-weight: 600;
  font-size: 0.9375rem;
  margin-bottom: 12px;
}
.pk-risks-table th,
.pk-risks-table td {
  border: 1px solid var(--border);
  padding: 14px 16px;
  vertical-align: top;
}
.pk-risks-table thead th {
  background: var(--surface);
  font-weight: 600;
  text-align: left;
}
.pk-risks-table tbody th[scope="row"] {
  font-weight: 600;
  text-align: left;
  background: var(--white);
}
.pk-risks-table tbody td {
  color: var(--text-secondary);
}
.pk-risks-table a { color: var(--accent); }

/* --- RFQ input list --- */
.sp-rfq-list {
  margin: 0 0 20px;
  padding-left: 1.25rem;
  font-size: 0.9375rem;
  line-height: 1.65;
  max-width: none;
  color: var(--text-secondary);
}
.sp-rfq-note {
  margin: 0 0 20px;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--text-secondary);
  max-width: none;
}

/* --- Breadcrumbs --- */
.crumbs {
  padding: calc(var(--pk-header-h, 72px) + 24px) 0 0;
  background: var(--white);
}

.crumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  font-size: 13px;
  color: var(--text-muted);
}

.crumbs__list a { color: var(--text-muted); }
.crumbs__list a:hover { color: var(--primary); }
.crumbs__sep { color: var(--border); }
.crumbs__list [aria-current="page"] { color: var(--text-main); font-weight: 500; }

/* --- Hero --- */
.sp-hero {
  padding: clamp(32px, 5vw, 56px) 0 clamp(60px, 8vw, 96px);
  background: var(--white);
}

.sp-hero__grid {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
}

.sp-hero__code {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 18px;
}

.sp-hero__code::after {
  content: "";
  width: 40px;
  height: 1px;
  background: var(--primary);
  opacity: 0.4;
}

.sp-hero__title {
  font-size: clamp(30px, 4vw, 50px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.sp-hero__lead {
  font-size: clamp(16px, 1.6vw, 19px);
  line-height: 1.6;
  color: var(--text-muted);
  margin-bottom: 28px;
  max-width: 62ch;
}

.sp-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 32px;
}

.sp-hero__trust {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.sp-hero__trust span {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 7px 14px;
}

.sp-passport {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: clamp(20px, 3vw, 28px);
  position: sticky;
  top: calc(var(--header-h) + 20px);
}

.sp-passport__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding-bottom: 16px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.sp-passport__specs { display: grid; gap: 14px; }

.sp-passport__specs > div {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
}

.sp-passport__specs dt { font-size: 13px; color: var(--text-muted); }
.sp-passport__specs dd { font-size: 15px; font-weight: 600; text-align: right; }

.sp-passport__note {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  line-height: 1.55;
  color: var(--text-muted);
}

/* --- Generic section --- */
.sp-section { padding: clamp(48px, 6vw, 88px) 0; }
.sp-section + .sp-section {
  padding-top: clamp(32px, 4vw, 52px);
}
.sp-hero + .sp-speakable + .sp-section,
.sp-speakable + .sp-section {
  padding-top: clamp(40px, 5vw, 72px);
}
.sp-section--surface { background: var(--surface); }

.sp-head { margin-bottom: clamp(32px, 4vw, 52px); max-width: none; }
.sp-head--center { margin-left: auto; margin-right: auto; text-align: center; }

.sp-head__label {
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 12px;
}

.sp-head__title {
  font-size: clamp(26px, 3.2vw, 42px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.12;
  margin-bottom: 14px;
}

.sp-head__desc {
  font-size: clamp(15px, 1.5vw, 18px);
  line-height: 1.65;
  color: var(--text-secondary);
}

/* --- Applications --- */
.sp-apply__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.apply-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 26px 24px;
  transition: border-color 0.3s ease, transform 0.3s var(--ease);
}

.apply-card:hover { border-color: rgba(255, 107, 0, 0.35); transform: translateY(-4px); }

.apply-card__num {
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--primary);
  margin-bottom: 12px;
}

.apply-card__title {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}

.apply-card__desc {
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--text-muted);
}

.sp-apply__viz {
  margin-top: 32px;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: #FAFAFA;
}

.sp-apply__viz img {
  display: block;
  width: 100%;
  height: auto;
}

/* --- Scheme --- */
.sp-scheme__frame {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: clamp(16px, 3vw, 36px);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.05);
}

.sp-scheme__frame svg,
.sp-scheme__frame img {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
}

.sp-scheme__legend {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.legend-row {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.legend-row__mark {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 6px;
  border: 1px solid var(--primary);
  color: var(--primary);
  background: rgba(255, 107, 0, 0.07);
  font-size: 0.8125rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.legend-row__name { font-size: 0.9375rem; font-weight: 600; margin-bottom: 2px; }
.legend-row__val { font-size: 0.875rem; color: var(--text-muted); line-height: 1.5; }

/* --- Equipment table --- */
.sp-equip__list {
  border: 1px solid var(--border);
  border-radius: 18px;
  overflow: hidden;
  background: var(--white);
}

.equip-row {
  display: grid;
  grid-template-columns: 190px 1fr 200px;
  gap: 24px;
  padding: 22px 26px;
  border-bottom: 1px solid var(--border);
  align-items: baseline;
}

.equip-row:last-child { border-bottom: none; }
.equip-row:hover { background: #FCFCFD; }

.equip-row__name { font-size: 16px; font-weight: 600; letter-spacing: -0.01em; }
.equip-row__desc { font-size: 0.9375rem; line-height: 1.65; color: var(--text-secondary); }

.equip-row__brand {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--primary);
  text-align: right;
}

/* --- Tech list --- */
.sp-tech__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  align-items: stretch;
}

.tech-block {
  display: flex;
  flex-direction: column;
  gap: 0;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 26px;
  min-width: 0;
  height: 100%;
  transition: border-color 0.25s ease;
}

.tech-block:hover,
.tech-block:focus-within {
  border-color: rgba(255, 107, 0, 0.35);
}

.tech-block__viz {
  margin: -26px -26px 18px;
  height: 112px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #FAFAFA;
  border-bottom: 1px solid var(--border);
  padding: 10px 14px;
  overflow: hidden;
  border-radius: 16px 16px 0 0;
}

.tech-block__viz img {
  max-height: 100%;
  max-width: 100%;
  object-fit: contain;
}

.tech-block__idx {
  flex-shrink: 0;
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid rgba(255, 107, 0, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
}

.tech-block__title { font-size: 17px; font-weight: 600; margin-bottom: 8px; letter-spacing: -0.02em; }
.tech-block__desc { font-size: 0.9375rem; line-height: 1.65; color: var(--text-secondary); }

/* --- Stages --- */
.sp-stages__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 18px;
  overflow: hidden;
}

.stage-cell {
  background: var(--white);
  padding: 28px 26px;
}

.stage-cell__top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.stage-cell__num { font-size: 26px; font-weight: 700; color: var(--primary); letter-spacing: -0.04em; }

.stage-cell__term {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 10px;
}

.stage-cell__title { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.stage-cell__desc { font-size: 0.9375rem; line-height: 1.65; color: var(--text-secondary); }

/* --- Advantages --- */
.sp-adv__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.adv-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-left: 3px solid var(--primary);
  border-radius: 14px;
  padding: 24px;
}

.adv-card__title { font-size: 16px; font-weight: 600; margin-bottom: 8px; letter-spacing: -0.01em; }
.adv-card__desc { font-size: 14px; line-height: 1.6; color: var(--text-muted); }

/* --- Cases --- */
.sp-cases__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.case-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 26px;
  display: flex;
  flex-direction: column;
}

.case-card__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding-bottom: 16px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.case-card__id { font-size: 11px; font-weight: 700; letter-spacing: 0.08em; color: var(--primary); }
.case-card__city { font-size: 12px; color: var(--text-muted); }

.case-card__title { font-size: 18px; font-weight: 600; letter-spacing: -0.02em; margin-bottom: 16px; }

.case-card__specs { display: grid; gap: 10px; margin-bottom: 18px; }

.case-card__specs > div {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  font-size: 13px;
}

.case-card__specs dt { color: var(--text-muted); }
.case-card__specs dd { font-weight: 600; text-align: right; }

.case-card__result {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 14px;
  line-height: 1.55;
  color: var(--text-main);
}

.case-card__result strong { color: var(--primary); }

/* --- FAQ --- */
.sp-faq__list {
  border: 1px solid var(--border);
  border-radius: 18px;
  overflow: hidden;
  background: var(--white);
  max-width: none;
  margin: 0;
}

.faq-item { border-bottom: 1px solid var(--border); }
.faq-item:last-child { border-bottom: none; }

.faq-item__q {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 22px 26px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  transition: color 0.25s ease;
}

.faq-item__q::-webkit-details-marker { display: none; }
.faq-item__q:hover { color: var(--primary); }

.faq-item__q::after {
  content: "+";
  flex-shrink: 0;
  font-size: 22px;
  font-weight: 400;
  color: var(--primary);
  transition: transform 0.3s var(--ease);
}

.faq-item[open] .faq-item__q::after { transform: rotate(45deg); }

.faq-item__a {
  padding: 0 26px 22px;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--text-muted);
  max-width: 78ch;
}

/* --- Related --- */
.sp-related__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.rel-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  transition: border-color 0.3s ease, transform 0.3s var(--ease);
}

.rel-card:hover { border-color: rgba(255, 107, 0, 0.35); transform: translateY(-3px); }
.rel-card__code { font-size: 11px; font-weight: 700; letter-spacing: 0.08em; color: var(--primary); }
.rel-card__tag {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.rel-card__name { font-size: 15px; font-weight: 600; line-height: 1.3; letter-spacing: -0.01em; }
.rel-card__meta { font-size: 13px; color: var(--text-muted); }

.sp-related__more {
  margin-top: 20px;
  font-size: 0.9375rem;
}
.sp-related__more a { color: var(--primary); font-weight: 600; }

/* --- CTA --- */
.sp-cta {
  padding: clamp(64px, 8vw, 110px) 0;
  background: var(--surface);
}

.sp-cta__box {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: clamp(32px, 5vw, 64px);
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: clamp(28px, 4vw, 56px);
  align-items: center;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.05);
}

.sp-cta__title {
  font-size: clamp(26px, 3.2vw, 40px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.sp-cta__desc {
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-muted);
  margin-bottom: 28px;
  max-width: 56ch;
}

.sp-cta__actions { display: flex; flex-wrap: wrap; gap: 14px; }

.sp-cta__points { display: grid; gap: 16px; margin-top: 20px; }

.sp-cta__side { display: grid; gap: 16px; }

.sp-cta__form .pk-engineer-form {
  margin: 0;
  max-width: none;
}

.sp-cta__point {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 14px;
  line-height: 1.55;
  color: var(--text-muted);
}

.sp-cta__point::before {
  content: "";
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  margin-top: 7px;
  border-radius: 50%;
  background: var(--primary);
}

/* --- Accessibility --- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 2000;
  background: var(--primary);
  color: var(--white);
  padding: 12px 20px;
  border-radius: 0 0 8px 0;
  font-weight: 600;
}

.skip-link:focus { left: 0; }

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* --- Responsive --- */
@media (max-width: 1100px) {
  .sp-hero__grid { grid-template-columns: 1fr; }
  .sp-hero__lead { max-width: none; }
  .sp-cta__desc { max-width: none; }
  .sp-passport { position: static; }
  .sp-apply__grid { grid-template-columns: repeat(2, 1fr); }
  .sp-scheme__legend { grid-template-columns: repeat(2, 1fr); }
  .sp-stages__grid { grid-template-columns: repeat(2, 1fr); }
  .sp-adv__grid { grid-template-columns: repeat(2, 1fr); }
  .sp-cases__grid { grid-template-columns: 1fr; }
  .sp-related__grid { grid-template-columns: repeat(2, 1fr); }
  .sp-cta__box { grid-template-columns: 1fr; }
  .equip-row { grid-template-columns: 170px 1fr; }
  .equip-row__brand { grid-column: 2; text-align: left; }
}

@media (max-width: 700px) {
  .sp-apply__grid { grid-template-columns: 1fr; }
  .sp-type-block__specs div { grid-template-columns: 1fr; gap: 4px; }
  .sp-tech__grid { grid-template-columns: 1fr; }
  .sp-stages__grid { grid-template-columns: 1fr; }
  .sp-adv__grid { grid-template-columns: 1fr; }
  .sp-related__grid { grid-template-columns: 1fr; }
  .sp-scheme__legend { grid-template-columns: 1fr; }
  .equip-row { grid-template-columns: 1fr; gap: 8px; padding: 20px; }
  .equip-row__brand { grid-column: 1; }
}

@media (max-width: 768px) {
  .sp-scheme__frame {
    padding: 12px;
    overflow: hidden;
    max-width: 100%;
  }
  .sp-scheme__frame svg,
  .sp-scheme__frame img {
    min-width: 0;
    width: 100%;
    max-width: 100%;
    height: auto;
  }
  .sp-hero__actions,
  .sp-cta__actions {
    flex-wrap: nowrap;
    align-items: stretch;
    gap: 8px;
  }
  .sp-hero__actions .btn,
  .sp-cta__actions .btn {
    flex: 1 1 0;
    min-width: 0;
    padding: 10px 8px;
    font-size: 12.5px;
    line-height: 1.25;
    white-space: normal;
    text-align: center;
  }
}