/* ========================================
   Roomix.pro - Sections (Header, Footer, все секции)
   ======================================== */

/* ===== HEADER ===== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--color-background);
  box-shadow: var(--shadow-sm);
  z-index: 100;
  padding: var(--space-4) 0;
  transition: all var(--transition-base);
}

.site-header--scrolled {
  background: rgba(245, 240, 232, 0.95);
  backdrop-filter: blur(10px);
}

.site-header__container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.site-header__logo {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.site-header__logo:hover {
  color: var(--color-blue-accent);
}

/* Навигация */
.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.site-nav__list {
  display: flex;
  gap: var(--space-5);
}

.site-nav__link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
  position: relative;
}

.site-nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition-base);
}

.site-nav__link:hover,
.site-nav__link--active {
  color: var(--color-text-primary);
}

.site-nav__link:hover::after,
.site-nav__link--active::after {
  width: 100%;
}

/* Бургер-меню */
.burger-menu {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.burger-menu__line {
  width: 100%;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.burger-menu--active .burger-menu__line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.burger-menu--active .burger-menu__line:nth-child(2) {
  opacity: 0;
}

.burger-menu--active .burger-menu__line:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Мобильное меню */
.mobile-nav {
  display: none;
  position: fixed;
  top: 60px;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #F5F0E8;
  padding: var(--space-6);
  z-index: 1000;
  transform: translateY(-10px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base), transform var(--transition-base);
  overflow-y: auto;
}

.mobile-nav--active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.mobile-nav__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.mobile-nav__link {
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-text-primary);
  text-decoration: none;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
  transition: color var(--transition-fast);
}

.mobile-nav__link:hover,
.mobile-nav__link--active {
  color: var(--color-blue-accent);
}

/* ===== FOOTER ===== */

.site-footer {
  background: var(--color-text-primary);
  color: var(--color-background);
  padding: var(--space-5) 0;
  text-align: center;
}

.site-footer__container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.site-footer__copyright {
  font-size: var(--text-sm);
  opacity: 0.8;
}

/* ========================================
   SECTION 1: HERO
   ======================================== */

.section-hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: calc(var(--space-16) + 60px) var(--container-padding) var(--space-8);
  position: relative;
  background: var(--color-background);
}

.section-hero__content {
  max-width: 800px;
}

.section-hero__title {
  font-family: var(--font-heading);
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-5);
}

.section-hero__subtitle {
  font-size: var(--text-xl);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  max-width: 600px;
  margin: 0 auto;
}

.section-hero__illustration {
  margin-top: var(--space-8);
  margin-left: auto;
  margin-right: auto;
  max-width: 600px;
  width: 100%;
}

.section-hero__partners {
  margin-top: auto;
  padding-top: var(--space-10);
}

/* ========================================
   SECTION 2: PROBLEM
   ======================================== */

.section-problem {
  padding: var(--section-padding-y) 0;
  background: var(--color-background-alt);
}

.section-problem__container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section-problem__header {
  text-align: center;
  margin-bottom: var(--space-10);
}

.section-problem__title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

.section-problem__content {
  max-width: 800px;
  margin: 0 auto;
}

/* ========================================
   SECTION 3: FALSE PATHS
   ======================================== */

.section-false-paths {
  padding: var(--section-padding-y) 0;
  background: var(--color-background);
}

.section-false-paths__container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section-false-paths__header {
  text-align: center;
  margin-bottom: var(--space-10);
}

.section-false-paths__title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-text-primary);
}

.section-false-paths__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.false-path-card {
  background: var(--color-card-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  border: 2px solid var(--color-border);
  transition: all var(--transition-base);
}

.false-path-card:hover {
  border-color: var(--color-red);
  box-shadow: var(--shadow-md);
}

.false-path-card__icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-4);
}

.false-path-card__title {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.false-path-card__subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.false-path-card__section {
  margin-bottom: var(--space-3);
}

.false-path-card__section:last-child {
  margin-bottom: 0;
}

.false-path-card__label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-1);
}

.false-path-card__label--problem {
  color: var(--color-red);
}

.false-path-card__text {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

/* ========================================
   SECTION 4: SOLUTION
   ======================================== */

.section-solution {
  padding: var(--section-padding-y) 0;
  background: var(--color-background-alt);
}

.section-solution__container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section-solution__grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-10);
  align-items: center;
}

.section-solution__content {}

.section-solution__title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: var(--leading-tight);
}

.section-solution__description {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  margin-top: var(--space-5);
}

.section-solution__illustration {
  /* Правая колонка */
}

/* ========================================
   SECTION 5: LAYER 1 (OpenProject)
   ======================================== */

.section-layer {
  padding: var(--section-padding-y) 0;
}

.section-layer--1 {
  background: var(--color-background);
}

.section-layer--2-3 {
  background: var(--color-background-alt);
}

.section-layer--4 {
  background: var(--color-background);
}

.section-layer__container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section-layer__header {
  text-align: center;
  margin-bottom: var(--space-10);
}

.section-layer__title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}

.section-layer__product {
  font-size: var(--text-xl);
  color: var(--color-blue-accent);
  font-weight: 600;
}

.section-layer__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-10);
  align-items: center;
}

.section-layer__features {}

.section-layer__visual {
  background: var(--color-card-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
}

.section-layer__visual svg {
  width: 100%;
  height: auto;
  display: block;
}

.section-layer__grid--reversed {
  direction: rtl;
}

.section-layer__grid--reversed > * {
  direction: ltr;
}

/* ===== Layer 2-3 (StormBPMN + Camunda) ===== */

.section-layer-2-3__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-8);
}

.layer-column {
  background: var(--color-card-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
}

.layer-column__subtitle {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-5);
  text-align: center;
}

.layer-column__illustration {
  margin-bottom: var(--space-5);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.layer-column__illustration svg {
  width: 100%;
  height: auto;
}

.layer-column__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.layer-column__item {
  position: relative;
  padding-left: var(--space-5);
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

.layer-column__item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  background: var(--color-blue-accent);
  border-radius: var(--radius-full);
}

/* ========================================
   SECTION 8: HOW IT WORKS
   ======================================== */

.section-how-it-works {
  padding: var(--section-padding-y) 0;
  background: var(--color-background-alt);
}

.section-how-it-works__container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section-how-it-works__header {
  text-align: center;
  margin-bottom: var(--space-10);
}

.section-how-it-works__title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}

.section-how-it-works__subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.process-step {
  text-align: center;
  position: relative;
}

.process-step__number {
  width: 60px;
  height: 60px;
  background: var(--color-blue-accent);
  color: var(--color-card-bg);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  font-weight: 700;
  margin: 0 auto var(--space-4);
}

.process-step__title {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.process-step__text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

.process-feedback {
  margin-top: var(--space-8);
  padding: var(--space-5);
  background: var(--color-card-bg);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-md);
  text-align: center;
}

.process-feedback__text {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
}

.process-feedback__text strong {
  color: var(--color-text-primary);
}

/* ========================================
   SECTION 9: BENEFITS
   ======================================== */

.section-benefits {
  padding: var(--section-padding-y) 0;
  background: var(--color-background);
}

.section-benefits__container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section-benefits__header {
  text-align: center;
  margin-bottom: var(--space-10);
}

.section-benefits__title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-text-primary);
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.benefits-grid--single {
  display: flex;
  justify-content: center;
}

.benefits-grid--single .benefit-box {
  max-width: 300px;
}

/* ========================================
   SECTION 10: ROI
   ======================================== */

.section-roi {
  padding: var(--section-padding-y) 0;
  background: var(--color-background-alt);
}

.section-roi__container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section-roi__header {
  text-align: center;
  margin-bottom: var(--space-10);
}

.section-roi__title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-text-primary);
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.roi-note {
  margin-top: var(--space-8);
  padding: var(--space-5);
  background: var(--color-card-bg);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-md);
  text-align: center;
}

.roi-note__text {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text-primary);
}

/* ========================================
   SECTION 11: AUDIENCE
   ======================================== */

.section-audience {
  padding: var(--section-padding-y) 0;
  background: var(--color-background);
}

.section-audience__container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section-audience__header {
  text-align: center;
  margin-bottom: var(--space-10);
}

.section-audience__title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-text-primary);
}

.audience-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-8);
}

.audience-column__title {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-blue-accent);
  margin-bottom: var(--space-5);
}

.audience-card {
  background: var(--color-card-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin-bottom: var(--space-4);
  box-shadow: var(--shadow-sm);
}

.audience-card:last-child {
  margin-bottom: 0;
}

.audience-card__title {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.audience-card__text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.audience-card__list {
  margin-top: var(--space-3);
}

.audience-card__list li {
  padding: var(--space-2) 0;
  padding-left: var(--space-5);
  position: relative;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.audience-card__list li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--color-blue-accent);
  font-weight: 700;
}

/* ========================================
   SECTION 12: ROADMAP
   ======================================== */

.section-roadmap {
  padding: var(--section-padding-y) 0;
  background: var(--color-background-alt);
}

.section-roadmap__container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section-roadmap__header {
  text-align: center;
  margin-bottom: var(--space-10);
}

.section-roadmap__title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-text-primary);
}

.roadmap-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.roadmap-item {
  background: var(--color-card-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-align: center;
  border-top: 4px solid var(--color-blue-accent);
  box-shadow: var(--shadow-sm);
}

.roadmap-item__number {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-blue-accent);
  margin-bottom: var(--space-2);
}

.roadmap-item__title {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.roadmap-item__period {
  font-size: var(--text-sm);
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: var(--space-3);
}

.roadmap-item__text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

.roadmap-note {
  margin-top: var(--space-8);
  padding: var(--space-5);
  background: var(--color-card-bg);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-md);
  text-align: center;
}

.roadmap-note__text {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text-primary);
}

/* ========================================
   SECTION 13: CTA
   ======================================== */

.section-cta {
  padding: var(--section-padding-y) 0;
  background: var(--color-background);
}

.section-cta__container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section-cta__grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-10);
  align-items: center;
}

.section-cta__content {}

.section-cta__title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

.section-cta__subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-5);
}

.bonus-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.bonus-item {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
}

.bonus-item__icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  color: var(--color-blue-accent);
  margin-top: 2px;
}

.bonus-item__text {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

.bonus-item__highlight {
  font-weight: 600;
  color: var(--color-text-primary);
}

.section-cta__action {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

/* ========================================
   АДАПТИВНОСТЬ
   ======================================== */

/* Tablet landscape */
@media (max-width: 1024px) {
  .section-false-paths__grid {
    grid-template-columns: 1fr;
    gap: var(--space-5);
  }

  .section-solution__grid {
    grid-template-columns: 1fr;
  }

  .section-solution__illustration {
    order: 1;
    max-width: 500px;
    margin: var(--space-8) auto 0;
  }

  .section-layer__grid {
    grid-template-columns: 1fr;
  }

  .section-layer__grid--reversed {
    direction: ltr;
  }

  .section-layer__visual {
    order: -1;
    width: 100%;
    max-width: 500px;
    margin: 0 auto var(--space-8);
  }

  .section-layer-2-3__grid {
    grid-template-columns: 1fr;
  }

  .process-steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .benefits-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .roadmap-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .section-cta__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}

/* Tablet portrait */
@media (max-width: 768px) {
  .site-nav__list {
    display: none;
  }

  .burger-menu {
    display: flex;
  }

  .mobile-nav {
    display: block;
  }

  .section-hero {
    min-height: auto;
    padding: calc(var(--space-12) + 60px) var(--container-padding) var(--space-8);
  }

  .section-hero__title {
    font-size: var(--text-3xl);
  }

  .section-hero__subtitle {
    font-size: var(--text-lg);
  }

  .audience-grid {
    grid-template-columns: 1fr;
  }

  .section-cta__action {
    align-items: center;
    text-align: center;
  }

  .btn-cta {
    width: 100%;
    max-width: 320px;
  }
}

/* Mobile */
@media (max-width: 640px) {
  .process-steps {
    grid-template-columns: 1fr;
  }

  .benefits-grid {
    grid-template-columns: 1fr;
  }

  .metrics-grid {
    grid-template-columns: 1fr;
  }

  .roadmap-grid {
    grid-template-columns: 1fr;
  }

  .partners {
    flex-direction: column;
    gap: var(--space-4);
  }

  .partners__logo {
    height: 24px;
  }
}

/* ========================================
   SECTION: PROBLEM (Updated - 6 Cards Grid)
   ======================================== */

.section-problem__subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  max-width: 700px;
  margin: 0 auto;
  line-height: var(--leading-relaxed);
}

.problem-cards-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.problem-card {
  display: flex;
  flex-direction: column;
  background: var(--color-card-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  border: 2px solid var(--color-border);
  text-decoration: none;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.problem-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.problem-card__icon {
  width: 48px;
  height: 48px;
  color: var(--color-blue-accent);
  margin-bottom: var(--space-4);
}

.problem-card__icon svg {
  width: 100%;
  height: 100%;
}

.problem-card__title {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.problem-card__price {
  font-family: var(--font-body);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-red);
  margin-bottom: var(--space-3);
}

.problem-card__text {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  flex-grow: 1;
  margin-bottom: var(--space-4);
}

.problem-card__link {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  transition: gap var(--transition-base);
}

.problem-card:hover .problem-card__link {
  gap: var(--space-3);
}

.problem-card__arrow {
  transition: transform var(--transition-base);
}

.problem-card:hover .problem-card__arrow {
  transform: translateX(4px);
}

/* Problem Card Full (объединённая карточка проблема + решение) */
.problem-card-full {
  display: flex;
  flex-direction: column;
  background: var(--color-card-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  border: 2px solid var(--color-border);
  text-decoration: none;
  transition: all var(--transition-base);
  cursor: pointer;
}

.problem-card-full:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.problem-card-full__header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

.problem-card-full__icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  color: var(--color-blue-accent);
}

.problem-card-full__icon svg {
  width: 100%;
  height: 100%;
}

.problem-card-full__title-group {
  flex: 1;
}

.problem-card-full__title {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-1);
}

.problem-card-full__price {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-red);
}

.problem-card-full__text {
  font-size: var(--text-base);
  color: var(--color-text-primary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-4);
  font-weight: 500;
}

.problem-card-full__solution,
.problem-card-full__result {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-3);
}

.problem-card-full__result {
  margin-bottom: 0;
  color: var(--color-red);
  font-weight: 500;
}

.problem-card-full__label {
  font-weight: 600;
  color: var(--color-text-primary);
}

.problem-card-full__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: auto;
  padding-top: var(--space-4);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-accent);
  transition: gap var(--transition-base);
}

.problem-card-full:hover .problem-card-full__link {
  gap: var(--space-3);
}

.problem-card-full__arrow {
  transition: transform var(--transition-base);
}

.problem-card-full:hover .problem-card-full__arrow {
  transform: translateX(4px);
}

/* Note под карточками */
.section-problem__note {
  margin-top: var(--space-10);
  padding: var(--space-6);
  background: linear-gradient(135deg, rgba(201, 162, 39, 0.08) 0%, rgba(46, 92, 138, 0.08) 100%);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--color-accent);
}

.section-problem__note p {
  font-size: var(--text-lg);
  color: var(--color-text-primary);
  line-height: var(--leading-relaxed);
  margin: 0;
  font-style: italic;
}

/* ========================================
   SECTION: CURRENT SOLUTIONS (How They Solve Now)
   ======================================== */

.section-current-solutions {
  padding: var(--section-padding-y) 0;
  background: var(--color-background);
}

.section-current-solutions__container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section-current-solutions__header {
  text-align: center;
  margin-bottom: var(--space-10);
}

.section-current-solutions__title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

.section-current-solutions__subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  max-width: 700px;
  margin: 0 auto;
  line-height: var(--leading-relaxed);
}

.current-solutions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-bottom: var(--space-10);
}

.solution-card {
  display: flex;
  flex-direction: column;
  background: var(--color-card-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  border: 2px solid var(--color-border);
  text-decoration: none;
  transition: all var(--transition-base);
}

.solution-card:hover {
  border-color: var(--color-blue-accent);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.solution-card__icon {
  width: 48px;
  height: 48px;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.solution-card__icon svg {
  width: 100%;
  height: 100%;
}

.solution-card__title {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.solution-card__price {
  font-family: var(--font-body);
  font-size: var(--text-xl);
  font-weight: 700;
  color: #E67E22;
  margin-bottom: var(--space-3);
}

.solution-card__text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-3);
}

.solution-card__problem {
  font-size: var(--text-sm);
  color: var(--color-red);
  font-style: italic;
  line-height: var(--leading-relaxed);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
  flex-grow: 1;
  margin-bottom: var(--space-4);
}

.solution-card__link {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-blue-accent);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  transition: gap var(--transition-base);
}

.solution-card:hover .solution-card__link {
  gap: var(--space-3);
}

.solution-card__arrow {
  transition: transform var(--transition-base);
}

.solution-card:hover .solution-card__arrow {
  transform: translateX(4px);
}

/* Summary Block */
.current-solutions-summary {
  background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-blue-accent) 100%);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-6);
}

.current-solutions-summary__content {
  max-width: 700px;
}

.current-solutions-summary__title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}

.current-solutions-summary__text {
  font-size: var(--text-lg);
  color: rgba(255, 255, 255, 0.9);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-4);
}

.current-solutions-summary__accent {
  font-size: var(--text-base);
  color: rgba(255, 255, 255, 0.8);
  line-height: var(--leading-relaxed);
}

.current-solutions-summary__accent strong {
  color: var(--color-accent);
}

.current-solutions-summary__cta {
  background: var(--color-accent);
  color: var(--color-text-primary);
}

.current-solutions-summary__cta:hover {
  background: var(--color-accent-hover);
}

/* ========================================
   SECTION: SYSTEMATIC SOLUTION
   ======================================== */

.section-systematic {
  padding: var(--section-padding-y) 0;
  background: var(--color-background-alt);
}

.section-systematic__container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section-systematic__header {
  text-align: center;
  margin-bottom: var(--space-10);
}

.section-systematic__title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

.section-systematic__subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  max-width: 800px;
  margin: 0 auto;
  line-height: var(--leading-relaxed);
}

/* Intro Block */
.systematic-intro {
  background: var(--color-card-bg);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  margin-bottom: var(--space-10);
  text-align: center;
}

.systematic-intro__title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

.systematic-intro__text {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  max-width: 700px;
  margin: 0 auto var(--space-4);
}

.systematic-intro__approaches {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-top: var(--space-6);
}

.approach-badge {
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-lg);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
}

.approach-badge--project {
  background: rgba(46, 92, 138, 0.1);
  border: 2px solid var(--color-blue-accent);
  color: var(--color-blue-accent);
}

.approach-badge--process {
  background: rgba(201, 162, 39, 0.1);
  border: 2px solid var(--color-accent);
  color: var(--color-text-primary);
}

/* Two Column Grid */
.systematic-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
  margin-bottom: var(--space-10);
}

.systematic-block {
  display: flex;
  flex-direction: column;
  background: var(--color-card-bg);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  border: 2px solid var(--color-border);
  text-decoration: none;
  transition: all var(--transition-base);
}

.systematic-block:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.systematic-block__title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

.systematic-block__description {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-4);
}

.systematic-block__fact {
  background: var(--color-background-alt);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  margin-bottom: var(--space-5);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

.systematic-block__fact strong {
  color: var(--color-text-primary);
}

.systematic-block__subtitle {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}

.systematic-block__examples {
  list-style: none;
  padding: 0;
  margin: 0;
}

.systematic-block__examples li {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
}

.systematic-block__examples li:last-child {
  border-bottom: none;
}

.systematic-block__examples strong {
  color: var(--color-text-primary);
}

/* Tools Table */
.tools-table {
  margin-bottom: var(--space-5);
}

.tools-table__row {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
  font-size: var(--text-sm);
}

.tools-table__row:last-child {
  border-bottom: none;
}

.tools-table__tool {
  font-weight: 600;
  color: var(--color-text-primary);
}

.tools-table__result {
  color: var(--color-text-secondary);
}

/* Metrics */
.systematic-block__metrics {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.systematic-metric {
  flex: 1;
  min-width: 140px;
  background: var(--color-background-alt);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  text-align: center;
}

.systematic-metric__value {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-green);
  margin-bottom: var(--space-2);
}

.systematic-metric__label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: var(--leading-normal);
}

/* Link text in systematic block */
.systematic-block__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: auto;
  padding-top: var(--space-6);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-accent);
  transition: gap var(--transition-base);
}

.systematic-block:hover .systematic-block__link {
  gap: var(--space-3);
}

.systematic-block__arrow {
  transition: transform var(--transition-base);
}

.systematic-block:hover .systematic-block__arrow {
  transform: translateX(4px);
}

/* Synergy Block */
.systematic-synergy {
  background: var(--color-card-bg);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  margin-bottom: var(--space-10);
}

.systematic-synergy__title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text-primary);
  text-align: center;
  margin-bottom: var(--space-6);
}

.systematic-synergy__content {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-8);
  align-items: center;
}

.systematic-synergy__visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
}

.synergy-layer {
  width: 100%;
  max-width: 280px;
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  text-align: center;
}

.synergy-layer--project {
  background: rgba(46, 92, 138, 0.1);
  border: 2px solid var(--color-blue-accent);
}

.synergy-layer--process {
  background: rgba(201, 162, 39, 0.1);
  border: 2px solid var(--color-accent);
}

.synergy-layer__label {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-1);
}

.synergy-layer__question {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
}

.synergy-arrow {
  font-size: var(--text-2xl);
  color: var(--color-text-muted);
}

.systematic-synergy__text {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

.systematic-synergy__text p {
  margin-bottom: var(--space-3);
}

.systematic-synergy__text ul {
  list-style: none;
  padding: 0;
  margin: var(--space-3) 0 0;
}

.systematic-synergy__text li {
  position: relative;
  padding-left: var(--space-5);
  margin-bottom: var(--space-2);
}

.systematic-synergy__text li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-green);
  font-weight: 700;
}

/* Why Block */
.systematic-why {
  margin-bottom: var(--space-10);
}

.systematic-why__title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text-primary);
  text-align: center;
  margin-bottom: var(--space-6);
}

.systematic-why__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}

.systematic-why__item {
  background: var(--color-card-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  border: 1px solid var(--color-border);
}

.systematic-why__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--color-accent);
  color: var(--color-text-primary);
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: var(--text-sm);
  margin-bottom: var(--space-3);
}

.systematic-why__item h4 {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.systematic-why__item p {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

/* Conclusion Block */
.systematic-conclusion {
  background: var(--color-card-bg);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  text-align: center;
  border: 2px solid var(--color-accent);
}

.systematic-conclusion__title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

.systematic-conclusion__text {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-3);
}

.systematic-conclusion__answer {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-6);
}

.systematic-conclusion__cta {
  display: inline-flex;
}

/* ========================================
   SECTION: WHY R-BOS
   ======================================== */

.section-why-rbos {
  padding: var(--section-padding-y) 0;
  background: var(--color-background);
}

.section-why-rbos__container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section-why-rbos__header {
  text-align: center;
  margin-bottom: var(--space-10);
}

.section-why-rbos__title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

.section-why-rbos__subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  max-width: 700px;
  margin: 0 auto;
  line-height: var(--leading-relaxed);
}

/* Block */
.why-rbos-block {
  background: var(--color-card-bg);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  margin-bottom: var(--space-8);
}

.why-rbos-block__title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}

.why-rbos-block__answer {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
}

/* Table */
.why-rbos-table {
  margin-bottom: var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.why-rbos-table__row {
  display: grid;
  grid-template-columns: 1.5fr 1.5fr 1fr;
  gap: var(--space-4);
  padding: var(--space-4);
  border-bottom: 1px solid var(--color-border);
  font-size: var(--text-sm);
}

.why-rbos-table__row:last-child {
  border-bottom: none;
}

.why-rbos-table__row--header {
  background: var(--color-background-alt);
  font-weight: 600;
  color: var(--color-text-primary);
}

.why-rbos-table__row--total {
  background: var(--color-text-primary);
  color: white;
  font-weight: 600;
}

.why-rbos-table__row span:last-child {
  text-align: right;
}

/* Problems List */
.why-rbos-problems h4 {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}

.why-rbos-problems ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.why-rbos-problems li {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
}

.why-rbos-problems li:last-child {
  border-bottom: none;
}

.why-rbos-problems strong {
  color: var(--color-text-primary);
}

/* Solution */
.why-rbos-solution {
  background: var(--color-card-bg);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  margin-bottom: var(--space-8);
  border: 2px solid var(--color-accent);
}

.why-rbos-solution__title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

.why-rbos-solution__description {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-6);
}

/* Features */
.why-rbos-features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}

.why-rbos-feature {
  text-align: center;
  padding: var(--space-4);
  background: var(--color-background-alt);
  border-radius: var(--radius-lg);
}

.why-rbos-feature__icon {
  width: 48px;
  height: 48px;
  color: var(--color-accent);
  margin: 0 auto var(--space-3);
}

.why-rbos-feature__icon svg {
  width: 100%;
  height: 100%;
}

.why-rbos-feature h4 {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.why-rbos-feature p {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

/* Comparison */
.why-rbos-comparison {
  margin-bottom: var(--space-8);
}

.why-rbos-comparison__title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text-primary);
  text-align: center;
  margin-bottom: var(--space-6);
}

/* Comparison Cards — три пути */
.comparison-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.comparison-card {
  background: var(--color-card-bg);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  border: 1px solid var(--color-border);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.comparison-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.comparison-card--highlight {
  background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-blue-accent) 100%);
  border: none;
}

.comparison-card__title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-4);
  border-bottom: 2px solid var(--color-border);
}

.comparison-card--highlight .comparison-card__title {
  color: var(--color-accent);
  border-bottom-color: rgba(255, 255, 255, 0.2);
}

.comparison-card__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.comparison-card__list li {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.comparison-card__label {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.comparison-card--highlight .comparison-card__label {
  color: rgba(255, 255, 255, 0.6);
}

.comparison-card__value {
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text-primary);
  line-height: var(--leading-snug);
}

.comparison-card--highlight .comparison-card__value {
  color: white;
}

/* Conclusion */
.why-rbos-conclusion {
  background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-blue-accent) 100%);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  text-align: center;
}

.why-rbos-conclusion__title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}

.why-rbos-conclusion__text {
  font-size: var(--text-lg);
  color: rgba(255, 255, 255, 0.9);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-6);
}

.why-rbos-conclusion__points {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-6);
}

.conclusion-point {
  background: rgba(255, 255, 255, 0.1);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-lg);
  color: rgba(255, 255, 255, 0.9);
  font-size: var(--text-sm);
}

.conclusion-point strong {
  color: var(--color-accent);
}

.why-rbos-conclusion__accent {
  font-size: var(--text-base);
  color: rgba(255, 255, 255, 0.8);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-6);
}

.why-rbos-conclusion__accent strong {
  color: white;
}

.why-rbos-conclusion__cta {
  background: var(--color-accent);
  color: var(--color-text-primary);
}

.why-rbos-conclusion__cta:hover {
  background: var(--color-accent-hover);
}

/* ========================================
   SECTION: HOW R-BOS WORKS
   ======================================== */

.section-how-rbos {
  padding: var(--section-padding-y) 0;
  background: var(--color-background-alt);
}

.section-how-rbos__container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section-how-rbos__header {
  text-align: center;
  margin-bottom: var(--space-10);
}

.section-how-rbos__title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

.section-how-rbos__subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: var(--leading-relaxed);
}

/* Layers */
.rbos-layers {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 800px;
  margin: 0 auto;
}

.rbos-layer {
  background: var(--color-card-bg);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  border: 2px solid var(--color-border);
  position: relative;
}

.rbos-layer--strategy {
  border-color: var(--color-blue-accent);
}

.rbos-layer--design {
  border-color: var(--color-accent);
}

.rbos-layer--orchestration {
  border-color: var(--color-green);
}

.rbos-layer--execution {
  border-color: var(--color-text-secondary);
}

.rbos-layer__header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

.rbos-layer__number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: var(--text-lg);
  flex-shrink: 0;
}

.rbos-layer--strategy .rbos-layer__number {
  background: var(--color-blue-accent);
  color: white;
}

.rbos-layer--design .rbos-layer__number {
  background: var(--color-accent);
  color: var(--color-text-primary);
}

.rbos-layer--orchestration .rbos-layer__number {
  background: var(--color-green);
  color: white;
}

.rbos-layer--execution .rbos-layer__number {
  background: var(--color-text-secondary);
  color: white;
}

.rbos-layer__title-block {
  flex: 1;
}

.rbos-layer__title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-1);
}

.rbos-layer__product {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.rbos-layer__content {
  padding-left: calc(40px + var(--space-4));
}

.rbos-layer__components {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.rbos-component {
  background: var(--color-background-alt);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.rbos-layer__description {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

/* Arrow between layers */
.rbos-arrow {
  display: flex;
  justify-content: center;
  padding: var(--space-2) 0;
  color: var(--color-text-muted);
}

.rbos-arrow svg {
  width: 24px;
  height: 32px;
}

/* CTA for how-rbos section */
.section-how-rbos__cta {
  text-align: center;
  margin-top: var(--space-10);
}

/* CTA section for subpages (problems, system) */
.section-problem-cta {
  padding: var(--space-16) 0;
  background: var(--color-background-alt);
}

.section-problem-cta__container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  text-align: center;
}

.section-problem-cta__title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

.section-problem-cta__text {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-8);
}

/* ========================================
   RESPONSIVE: NEW SECTIONS
   ======================================== */

/* Tablet */
@media (max-width: 1024px) {
  .current-solutions-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .systematic-grid {
    grid-template-columns: 1fr;
  }

  .systematic-why__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .why-rbos-features {
    grid-template-columns: repeat(2, 1fr);
  }

  .comparison-cards {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .systematic-synergy__content {
    grid-template-columns: 1fr;
  }

  .systematic-synergy__visual {
    order: -1;
  }
}

/* Mobile */
@media (max-width: 640px) {
  .problem-cards-grid {
    grid-template-columns: 1fr;
  }

  .current-solutions-grid {
    grid-template-columns: 1fr;
  }

  .systematic-intro__approaches {
    flex-direction: column;
    align-items: center;
  }

  .approach-badge {
    width: 100%;
    max-width: 300px;
  }

  .systematic-why__grid {
    grid-template-columns: 1fr;
  }

  .why-rbos-features {
    grid-template-columns: 1fr;
  }

  .why-rbos-table__row {
    grid-template-columns: 1fr;
    gap: var(--space-1);
  }

  .why-rbos-table__row span:last-child {
    text-align: left;
    font-weight: 600;
    color: var(--color-text-primary);
  }

  .why-rbos-conclusion__points {
    flex-direction: column;
    align-items: center;
  }

  .conclusion-point {
    width: 100%;
    max-width: 300px;
  }

  .tools-table__row {
    grid-template-columns: 1fr;
    gap: var(--space-1);
  }

  .rbos-layer__content {
    padding-left: 0;
  }

  .current-solutions-summary {
    padding: var(--space-6);
  }
}

/* ========================================
   PROBLEM DETAIL PAGES
   ======================================== */

/* ===== BREADCRUMBS ===== */
.breadcrumbs {
  padding: calc(var(--header-height) + var(--space-6)) 0 var(--space-4);
  background: var(--color-background);
}

.breadcrumbs__container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
}

.breadcrumbs__link {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.breadcrumbs__link:hover {
  color: var(--color-blue-accent);
}

.breadcrumbs__separator {
  color: var(--color-text-secondary);
  opacity: 0.5;
}

.breadcrumbs__current {
  color: var(--color-text-primary);
  font-weight: 500;
}

/* ===== PROBLEM HERO ===== */
.problem-hero {
  padding: var(--space-12) 0 var(--space-16);
  background: linear-gradient(180deg, var(--color-background) 0%, rgba(46, 92, 138, 0.05) 100%);
}

.problem-hero__container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  text-align: center;
}

.problem-hero__title {
  font-family: var(--font-heading);
  font-size: clamp(var(--text-2xl), 5vw, var(--text-4xl));
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.2;
  margin-bottom: var(--space-6);
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.problem-hero__subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ===== PROBLEM DETAILS ===== */
.problem-details {
  padding: var(--space-16) 0;
  background: var(--color-background);
}

.problem-details__container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: flex;
  flex-direction: column;
  gap: var(--space-10);
}

/* ===== PROBLEM BLOCK ===== */
.problem-block {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-md);
  border-left: 4px solid var(--color-red);
}

.problem-block__header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.problem-block__icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  color: var(--color-red);
}

.problem-block__icon svg {
  width: 100%;
  height: 100%;
}

.problem-block__title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-text-primary);
  line-height: 1.3;
}

.problem-block__content {
  padding-left: calc(48px + var(--space-4));
}

.problem-block__text {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-4);
}

.problem-block__metric {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  padding: var(--space-4);
  background: rgba(201, 74, 74, 0.08);
  border-radius: var(--radius-md);
  margin: var(--space-4) 0;
}

.problem-block__metric-value {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-red);
}

.problem-block__metric-label {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.problem-block__cause {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  font-style: italic;
}

/* ===== CURRENT SOLUTIONS ===== */
.problem-current-solutions {
  padding: var(--space-16) 0;
  background: rgba(46, 92, 138, 0.03);
}

.problem-current-solutions__container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.problem-current-solutions__title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text-primary);
  text-align: center;
  margin-bottom: var(--space-10);
}

/* ===== CURRENT PRACTICE ===== */
.current-practice {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-bottom: var(--space-6);
  box-shadow: var(--shadow-sm);
}

.current-practice__title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}

.current-practice__text {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-4);
}

.current-practice__cost {
  padding: var(--space-4);
  background: rgba(201, 162, 39, 0.08);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.current-practice__cost ul,
.current-practice__cost ol {
  margin: var(--space-2) 0 0 var(--space-4);
}

.current-practice__cost li {
  margin-bottom: var(--space-1);
}

.highlight {
  color: var(--color-accent);
  font-weight: 600;
}

/* ===== COST SUMMARY ===== */
.cost-summary {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-md);
  margin-top: var(--space-8);
}

.cost-summary__title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-6);
  text-align: center;
}

.cost-summary__table {
  margin-bottom: var(--space-6);
}

.cost-summary__row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid rgba(27, 58, 93, 0.1);
}

.cost-summary__row--header {
  background: rgba(46, 92, 138, 0.05);
  font-weight: 600;
  color: var(--color-text-primary);
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

.cost-summary__row--total {
  background: rgba(201, 162, 39, 0.1);
  font-weight: 700;
  color: var(--color-text-primary);
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  border-bottom: none;
}

.cost-summary__row span {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.cost-summary__row--header span,
.cost-summary__row--total span {
  color: var(--color-text-primary);
}

.cost-summary__conclusion {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  text-align: center;
  padding-top: var(--space-4);
  border-top: 1px solid rgba(27, 58, 93, 0.1);
  line-height: 1.6;
}

/* ===== PROBLEM SOLUTION ===== */
.problem-solution {
  padding: var(--space-16) 0;
  background: var(--color-background);
}

.problem-solution__container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  text-align: center;
}

.problem-solution__title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.problem-solution__subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-10);
}

/* ===== SOLUTION CHECKLIST ===== */
.solution-checklist {
  list-style: none;
  padding: 0;
  margin: 0 auto var(--space-10);
  max-width: 600px;
  text-align: left;
}

.solution-checklist__item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  background: white;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-3);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.solution-checklist__item:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
}

.solution-checklist__icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  color: var(--color-green, #2D8B4E);
}

.solution-checklist__item span {
  font-size: var(--text-base);
  color: var(--color-text-primary);
  line-height: 1.5;
}

.problem-solution__cta {
  margin: 0 auto;
}

/* ===== PROBLEM CTA ===== */
.problem-cta {
  padding: var(--space-16) 0;
  background: linear-gradient(135deg, var(--color-blue-accent) 0%, var(--color-text-primary) 100%);
}

.problem-cta__container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  text-align: center;
}

.problem-cta__title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: white;
  margin-bottom: var(--space-4);
}

.problem-cta__text {
  font-size: var(--text-lg);
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: var(--space-8);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== OTHER PROBLEMS ===== */
.other-problems {
  padding: var(--space-16) 0;
  background: var(--color-background);
}

.other-problems__container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.other-problems__title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text-primary);
  text-align: center;
  margin-bottom: var(--space-10);
}

.other-problems__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-4);
}

.other-problem-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-5) var(--space-6);
  background: white;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.other-problem-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.other-problem-card__title {
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text-primary);
}

.other-problem-card__arrow {
  font-size: var(--text-xl);
  color: var(--color-blue-accent);
  transition: transform var(--transition-fast);
}

.other-problem-card:hover .other-problem-card__arrow {
  transform: translateX(4px);
}

/* ===== PROBLEM PAGES - RESPONSIVE ===== */
@media (max-width: 768px) {
  .problem-hero {
    padding: var(--space-8) 0 var(--space-12);
  }

  .problem-block {
    padding: var(--space-6);
  }

  .problem-block__header {
    flex-direction: column;
    gap: var(--space-3);
  }

  .problem-block__icon {
    width: 40px;
    height: 40px;
  }

  .problem-block__content {
    padding-left: 0;
  }

  .problem-block__metric {
    flex-direction: column;
    gap: var(--space-1);
  }

  .cost-summary__row {
    grid-template-columns: 1fr;
    gap: var(--space-1);
  }

  .cost-summary__row--header {
    display: none;
  }

  .cost-summary__row span:first-child {
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-1);
  }

  .other-problems__grid {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   SOLUTIONS PAGES - ADDITIONAL STYLES
   ======================================== */

/* ===== COMPARISON TABLE ===== */
.comparison-table {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  margin: var(--space-6) 0;
}

.comparison-table__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid rgba(27, 58, 93, 0.1);
}

.comparison-table__row:last-child {
  border-bottom: none;
}

.comparison-table__row--header {
  background: var(--color-blue-accent);
  color: white;
  font-weight: 600;
}

.comparison-table__row--header span {
  color: white;
}

.comparison-table__row span {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.comparison-table__row span:first-child {
  color: var(--color-text-primary);
  font-weight: 500;
}

/* ===== SOLUTION TABLE (R-BOS) ===== */
.solution-table {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  margin: var(--space-8) auto;
  max-width: 800px;
  text-align: left;
}

.solution-table__row {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid rgba(27, 58, 93, 0.1);
}

.solution-table__row:last-child {
  border-bottom: none;
}

.solution-table__row--header {
  background: var(--color-blue-accent);
  color: white;
  font-weight: 600;
}

.solution-table__row--header span {
  color: white;
}

.solution-table__row span {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.solution-table__row span:first-child {
  color: var(--color-text-primary);
  font-weight: 500;
}

.problem-solution__text {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== STATS GRID ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
  margin: var(--space-6) 0;
}

.stat-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  text-align: center;
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--color-accent);
}

.stat-card__value {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}

.stat-card__label {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.4;
}

/* ===== STEPS LIST ===== */
.steps-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin: var(--space-6) 0;
}

.step-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  background: white;
  border-radius: var(--radius-md);
  padding: var(--space-4);
  box-shadow: var(--shadow-sm);
}

.step-item__number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--color-blue-accent);
  color: white;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: var(--text-sm);
  flex-shrink: 0;
}

.step-item__content {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.step-item__content strong {
  color: var(--color-text-primary);
}

/* ===== PROBLEM BLOCK LIST ===== */
.problem-block__list {
  list-style: none;
  padding: 0;
  margin: var(--space-4) 0;
}

.problem-block__list li {
  position: relative;
  padding-left: var(--space-6);
  margin-bottom: var(--space-3);
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.problem-block__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  background: var(--color-blue-accent);
  border-radius: var(--radius-full);
}

/* ===== QUOTE BLOCK ===== */
.problem-block__quote {
  background: linear-gradient(135deg, rgba(46, 92, 138, 0.05) 0%, rgba(201, 162, 39, 0.05) 100%);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  margin: var(--space-6) 0;
  font-size: var(--text-lg);
  font-style: italic;
  color: var(--color-text-primary);
  line-height: 1.6;
}

.problem-block__quote cite {
  display: block;
  margin-top: var(--space-4);
  font-size: var(--text-sm);
  font-style: normal;
  color: var(--color-text-muted);
}

/* ===== SOURCES BLOCK ===== */
.problem-sources {
  padding: var(--space-12) 0;
  background: var(--color-background-alt);
}

.problem-sources__container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.problem-sources__title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

.problem-sources__text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-3);
}

.problem-sources__list {
  list-style: none;
  padding: 0;
  margin: var(--space-4) 0;
}

.problem-sources__list li {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-2);
}

.problem-sources__list strong {
  color: var(--color-text-primary);
}

/* ===== SOLUTIONS PAGES - RESPONSIVE ===== */
@media (max-width: 768px) {
  .comparison-table__row,
  .solution-table__row {
    grid-template-columns: 1fr;
    gap: var(--space-2);
  }

  .comparison-table__row--header,
  .solution-table__row--header {
    display: none;
  }

  .comparison-table__row span:first-child,
  .solution-table__row span:first-child {
    font-weight: 600;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3);
  }

  .stat-card {
    padding: var(--space-4);
  }

  .stat-card__value {
    font-size: var(--text-lg);
  }

  .step-item {
    padding: var(--space-3);
  }
}