/* ========================================
   ConceptNests — Design Tokens (structure shared with micstec.com)
   ======================================== */

:root {
  /* Colors */
  --color-primary: #2B1D14;
  --color-accent: #E9A23B;
  --color-accent-dark: #96590C;
  --color-light: #FAF5EE;
  --color-dark: #54473E;
  --color-success: #38A169;
  --color-text: #241A14;
  --color-white: #FFFFFF;
  --color-border: #EADFD2;

  /* Typography */
  --font-heading: 'Poppins', 'Inter', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Spacing (8px grid) */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;

  /* Sizing */
  --max-width: 1200px;
  --header-height: 72px;

  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
}

/* ========================================
   Reset & Base
   ======================================== */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

a:hover {
  color: var(--color-accent);
}

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  font-size: inherit;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-primary);
}

h1 { font-size: clamp(2rem, 5vw, 2.75rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2.25rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.5rem); }
h4 { font-size: 1.125rem; }

p + p { margin-top: var(--space-sm); }

/* ========================================
   Utility Classes
   ======================================== */

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section {
  padding: var(--space-3xl) 0;
}

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

.section--dark {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.section--dark h2,
.section--dark h3,
.section--dark h4 {
  color: var(--color-white);
}

.section__header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.section__header p {
  color: var(--color-dark);
  max-width: 640px;
  margin: var(--space-sm) auto 0;
  font-size: 1.125rem;
}

.text-accent { color: var(--color-accent); }
.text-center { text-align: center; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ========================================
   Buttons
   ======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 0.75rem 1.75rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn--primary {
  background-color: var(--color-accent);
  color: var(--color-primary);
}

.btn--primary:hover {
  background-color: var(--color-accent-dark);
  color: var(--color-primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--secondary {
  background-color: transparent;
  color: var(--color-white);
  border: 2px solid var(--color-white);
}

.btn--secondary:hover {
  background-color: var(--color-white);
  color: var(--color-primary);
  transform: translateY(-1px);
}

.btn--outline {
  background-color: transparent;
  color: var(--color-accent);
  border: 2px solid var(--color-accent);
}

.btn--outline:hover {
  background-color: var(--color-accent);
  color: var(--color-primary);
  transform: translateY(-1px);
}

.btn--dark {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn--dark:hover {
  background-color: #3a281c;
  color: var(--color-white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* ========================================
   Header & Navigation
   ======================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: var(--color-primary);
  height: var(--header-height);
  transition: box-shadow var(--transition-base);
}

.header--scrolled {
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--color-white);
  letter-spacing: -0.02em;
}

.header__logo:hover {
  color: var(--color-white);
}

.header__logo .logo-icon {
  width: 36px;
  height: 36px;
  fill: var(--color-accent);
}

.header__logo .logo-accent {
  color: var(--color-accent);
}

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.nav__link {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-white);
  background-color: rgba(255, 255, 255, 0.1);
}

.nav__cta {
  margin-left: var(--space-xs);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
  z-index: 1001;
  background: none;
  border: none;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-white);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

@media (max-width: 1023px) {
  .nav-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background-color: var(--color-primary);
    padding: calc(var(--header-height) + var(--space-lg)) var(--space-lg) var(--space-lg);
    transition: right var(--transition-base);
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.3);
    pointer-events: none;
    z-index: 1002;
  }

  .nav.open {
    right: 0;
    pointer-events: auto;
  }

  .nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav__link {
    display: block;
    padding: 0.85rem 1rem;
    font-size: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .nav__cta {
    margin-left: 0;
    margin-top: var(--space-sm);
  }

  .nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
  }

  .nav-overlay.active {
    display: block;
  }
}

/* Push content below fixed header */
main {
  padding-top: var(--header-height);
}

/* ========================================
   Hero
   ======================================== */

.hero {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-3xl) 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(233, 162, 59, 0.12) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(233, 162, 59, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.hero__badge {
  display: inline-block;
  padding: 0.35rem 1rem;
  background: rgba(233, 162, 59, 0.15);
  color: var(--color-accent);
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-md);
}

.hero h1 {
  color: var(--color-white);
  margin-bottom: var(--space-md);
}

.hero__subtitle {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: var(--space-lg);
  line-height: 1.6;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

@media (min-width: 1024px) {
  .hero {
    padding: var(--space-3xl) 0 calc(var(--space-3xl) + 2rem);
  }
}

/* Homepage introduction */
.hero--home {
  padding: var(--space-xl) 0;
}

.hero--home::before,
.hero--home::after {
  content: none;
}

.hero__layout {
  display: grid;
  align-items: center;
  gap: var(--space-xl);
}

.hero--home .hero__content {
  min-width: 0;
  max-width: none;
}

.hero__eyebrow {
  margin-bottom: var(--space-md);
  color: var(--color-accent);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero--home h1 {
  font-size: clamp(2.25rem, 4.4vw, 3.5rem);
  font-weight: 600;
  letter-spacing: -0.045em;
  line-height: 1.13;
}

.hero--home h1 span {
  color: var(--color-accent);
}

.hero--home .hero__subtitle {
  max-width: 540px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 1.0625rem;
  line-height: 1.75;
}

.hero--home .hero__actions .btn {
  width: 100%;
  min-height: 50px;
}

.hero--home .btn--secondary {
  border: 1px solid rgba(255, 255, 255, 0.5);
}

.hero--home svg {
  display: block;
  flex-shrink: 0;
}

.hero--home a:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 5px;
}

.hero__footnote {
  margin-top: var(--space-md);
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.8125rem;
}

.hero__services {
  position: relative;
  min-width: 0;
  padding: var(--space-md);
  border-top: 3px solid var(--color-accent);
  border-radius: var(--radius-lg);
  background: var(--color-white);
  color: var(--color-text);
}

.hero__services-eyebrow {
  margin-bottom: var(--space-xs);
  color: var(--color-dark);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero__services-title {
  margin-bottom: var(--space-md);
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.35;
}

.hero__service {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1.125rem 0;
  border-top: 1px solid var(--color-border);
  color: var(--color-primary);
}

.hero__service:hover {
  color: var(--color-accent-dark);
}

.hero__service-number {
  align-self: flex-start;
  padding-top: 0.15rem;
  color: var(--color-dark);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
}

.hero__service-copy {
  display: grid;
  flex: 1;
  gap: 0.25rem;
  min-width: 0;
}

.hero__service-copy strong {
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.45;
}

.hero__service-copy > span {
  color: var(--color-dark);
  font-size: 0.8125rem;
  line-height: 1.55;
}

.hero__work-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  margin-top: var(--space-sm);
  color: var(--color-primary);
  font-size: 0.8125rem;
  font-weight: 600;
}

@media (min-width: 640px) {
  .hero--home .hero__actions .btn {
    width: auto;
  }

  .hero__services {
    padding: var(--space-lg);
  }
}

@media (min-width: 1024px) {
  .hero--home {
    padding: 5rem 0;
  }

  .hero__layout {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: var(--space-2xl);
  }
}

/* ========================================
   Card Grid
   ======================================== */

.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

@media (min-width: 768px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .card-grid--3 { grid-template-columns: repeat(3, 1fr); }
}

.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

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

.card__icon {
  width: 48px;
  height: 48px;
  background: rgba(233, 162, 59, 0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-sm);
  color: var(--color-accent);
}

.card__icon svg {
  width: 24px;
  height: 24px;
}

.card h3 {
  margin-bottom: var(--space-xs);
}

.card p {
  color: var(--color-dark);
  font-size: 0.95rem;
}

.card__price {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-accent-dark);
  margin: var(--space-sm) 0;
}

.card__price span {
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--color-dark);
}

.card__features {
  margin: var(--space-sm) 0 var(--space-md);
}

.card__features li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.4rem;
  font-size: 0.9rem;
  color: var(--color-dark);
}

.card__features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.5rem;
  width: 8px;
  height: 8px;
  background-color: var(--color-success);
  border-radius: 50%;
}

.card__action {
  margin-top: auto;
}

/* Product card variant */
.card--product {
  display: flex;
  flex-direction: column;
}

.card--product .card__image {
  width: 100%;
  height: 200px;
  background-color: var(--color-light);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-dark);
  font-size: 0.85rem;
  object-fit: contain;
  padding: var(--space-sm);
}

/* ========================================
   Value Proposition Strip
   ======================================== */

.value-strip {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  text-align: center;
}

@media (min-width: 768px) {
  .value-strip {
    grid-template-columns: repeat(3, 1fr);
  }
}

.value-strip__item {
  padding: var(--space-md);
}

.value-strip__icon {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--space-sm);
  background: rgba(233, 162, 59, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
}

.value-strip__icon svg {
  width: 28px;
  height: 28px;
}

.value-strip__item h3 {
  margin-bottom: var(--space-xs);
  font-size: 1.1rem;
}

.value-strip__item p {
  color: var(--color-dark);
  font-size: 0.9rem;
}

/* ========================================
   CTA Banner
   ======================================== */

.cta-banner {
  background-color: var(--color-accent);
  padding: var(--space-2xl) 0;
  text-align: center;
}

.cta-banner h2 {
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}

.cta-banner p {
  color: var(--color-primary);
  opacity: 0.8;
  margin-bottom: var(--space-lg);
  font-size: 1.1rem;
}

/* ========================================
   Footer
   ======================================== */

.footer {
  background-color: var(--color-primary);
  color: rgba(255, 255, 255, 0.7);
  padding: var(--space-3xl) 0 var(--space-lg);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

@media (min-width: 768px) {
  .footer__grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

.footer__brand {
  max-width: 300px;
}

.footer__logo {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-white);
  margin-bottom: var(--space-sm);
}

.footer__logo .logo-icon {
  width: 36px;
  height: 36px;
  vertical-align: middle;
  margin-right: var(--space-xs);
}

.footer__logo .logo-accent {
  color: var(--color-accent);
}

.footer__brand p {
  font-size: 0.9rem;
  line-height: 1.6;
}

.footer__column h4 {
  color: var(--color-white);
  font-size: 0.95rem;
  margin-bottom: var(--space-sm);
}

.footer__links li {
  margin-bottom: 0.4rem;
}

.footer__links a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

.footer__links a:hover {
  color: var(--color-accent);
}

.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-xs);
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}

.footer__contact-item svg {
  width: 16px;
  height: 16px;
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 3px;
}

.footer__bottom {
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.85rem;
}

.footer__social {
  display: flex;
  gap: var(--space-sm);
}

.footer__social a {
  color: rgba(255, 255, 255, 0.5);
  transition: color var(--transition-fast);
}

.footer__social a:hover {
  color: var(--color-accent);
}

.footer__social svg {
  width: 20px;
  height: 20px;
}

/* ========================================
   Service Blocks
   ======================================== */

.service-block {
  padding: var(--space-2xl) 0;
  border-bottom: 1px solid var(--color-border);
}

.service-block:last-child {
  border-bottom: none;
}

.service-block__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

@media (min-width: 768px) {
  .service-block__inner {
    grid-template-columns: 1fr 1fr;
  }

  .service-block:nth-child(even) .service-block__content {
    order: 2;
  }

  .service-block:nth-child(even) .service-block__visual {
    order: 1;
  }
}

.service-block__visual {
  background: var(--color-light);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 250px;
  color: var(--color-accent);
}

.service-block__visual svg {
  width: 80px;
  height: 80px;
  opacity: 0.6;
}

.service-block__content h3 {
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
}

.service-block__content p {
  color: var(--color-dark);
  margin-bottom: var(--space-md);
}

.service-block__deliverables {
  margin-bottom: var(--space-md);
}

.service-block__deliverables li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
  color: var(--color-dark);
}

.service-block__deliverables li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 8px;
  height: 8px;
  background-color: var(--color-accent);
  border-radius: 50%;
}

.service-block__audience {
  font-size: 0.9rem;
  color: var(--color-dark);
  margin-bottom: var(--space-md);
}

.service-block__audience strong {
  color: var(--color-text);
}

/* ========================================
   Pricing Table
   ======================================== */

.pricing-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-lg) 0;
  font-size: 0.95rem;
}

.pricing-table th {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: 0.85rem 1rem;
  text-align: left;
  font-weight: 600;
}

.pricing-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--color-border);
}

.pricing-table tr:nth-child(even) {
  background-color: var(--color-light);
}

.pricing-table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

/* ========================================
   FAQ Accordion
   ======================================== */

.faq__item {
  border-bottom: 1px solid var(--color-border);
}

.faq__question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md) 0;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  text-align: left;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.faq__question:hover {
  color: var(--color-accent-dark);
}

.faq__icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  transition: transform var(--transition-base);
}

.faq__item.active .faq__icon {
  transform: rotate(45deg);
}

.faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow), padding var(--transition-slow);
}

.faq__item.active .faq__answer {
  max-height: 300px;
  padding-bottom: var(--space-md);
}

.faq__answer p {
  color: var(--color-dark);
  font-size: 0.95rem;
}

/* ========================================
   Contact Form
   ======================================== */

.form {
  max-width: 640px;
}

.form__group {
  margin-bottom: var(--space-md);
}

.form__label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.35rem;
  color: var(--color-text);
}

.form__label .required {
  color: #e53e3e;
}

.form__input,
.form__select,
.form__textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-text);
  background-color: var(--color-white);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form__input:focus,
.form__select:focus,
.form__textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(233, 162, 59, 0.15);
}

.form__textarea {
  min-height: 140px;
  resize: vertical;
}

.form__select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2354473E' stroke-width='2' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

.form__error {
  color: #e53e3e;
  font-size: 0.85rem;
  margin-top: 0.25rem;
  display: none;
}

.form__group.error .form__error {
  display: block;
}

.form__group.error .form__input,
.form__group.error .form__select,
.form__group.error .form__textarea {
  border-color: #e53e3e;
}

.form__status {
  padding: var(--space-sm);
  border-radius: var(--radius-md);
  margin-top: var(--space-md);
  display: none;
}

.form__status--success {
  display: block;
  background-color: rgba(56, 161, 105, 0.1);
  color: var(--color-success);
  border: 1px solid var(--color-success);
}

.form__status--error {
  display: block;
  background-color: rgba(229, 62, 62, 0.1);
  color: #e53e3e;
  border: 1px solid #e53e3e;
}

/* ========================================
   Customer Showcase
   ======================================== */

.customer-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  max-width: 720px;
  margin: 0 auto;
}

.customer-card {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  padding: var(--space-md) var(--space-lg);
  background: var(--color-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.customer-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
}

.customer-card__logo {
  width: 72px;
  height: 72px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  object-fit: contain;
  background: var(--color-light);
  padding: 6px;
}

.customer-card__info {
  flex: 1;
}

.customer-card__info h4 {
  margin-bottom: 0.15rem;
  font-size: 1.05rem;
}

.customer-card__type {
  color: var(--color-accent-dark);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.2rem;
}

.customer-card__desc {
  color: var(--color-dark);
  font-size: 0.875rem;
  line-height: 1.4;
}

.customer-card__link {
  display: inline-block;
  margin-top: 0.3rem;
  font-size: 0.8rem;
  color: var(--color-accent-dark);
  font-weight: 500;
}

.customer-card__link:hover {
  color: var(--color-accent);
}

/* ========================================
   Values Grid
   ======================================== */

.values-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

@media (min-width: 768px) {
  .values-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .values-grid { grid-template-columns: repeat(4, 1fr); }
}

.values-grid__item {
  text-align: center;
  padding: var(--space-md);
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.values-grid__icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--space-sm);
  color: var(--color-accent);
}

.values-grid__item h4 {
  margin-bottom: var(--space-xs);
}

.values-grid__item p {
  font-size: 0.9rem;
  color: var(--color-dark);
}

/* ========================================
   Trust / Social Proof
   ======================================== */

.trust {
  text-align: center;
  padding: var(--space-lg) 0;
}

.trust__logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: var(--space-xl) var(--space-2xl);
}

.trust__logo {
  height: 32px;
  color: var(--color-dark);
  font-weight: 600;
  font-size: 1.1rem;
}

.trust__logo-img {
  height: 56px;
  width: auto;
  object-fit: contain;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.trust__logos a:hover .trust__logo-img {
  transform: scale(1.08);
  opacity: 0.9;
}

.customer-card a:hover .customer-card__logo {
  transform: scale(1.05);
}

.customer-card__logo {
  transition: transform 0.2s ease;
}

/* ========================================
   Chip Tags (for AI page use cases)
   ======================================== */

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin: var(--space-sm) 0;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.85rem;
  background: var(--color-light);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  color: var(--color-dark);
  border: 1px solid var(--color-border);
}

.chip svg {
  width: 14px;
  height: 14px;
  color: var(--color-accent);
}

/* ========================================
   Page Hero (inner pages)
   ======================================== */

.page-hero {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-2xl) 0;
  text-align: center;
}

.page-hero h1 {
  color: var(--color-white);
  margin-bottom: var(--space-xs);
}

.page-hero p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

/* ========================================
   Comparison Table
   ======================================== */

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-lg) 0;
}

.comparison-table th,
.comparison-table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9rem;
}

.comparison-table th {
  background-color: var(--color-primary);
  color: var(--color-white);
  font-weight: 600;
}

.comparison-table tr:nth-child(even) {
  background-color: var(--color-light);
}

.comparison-table .check {
  color: var(--color-success);
  font-weight: 700;
}

/* ========================================
   Scroll Reveal Animation
   ======================================== */

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================
   Contact Info Side
   ======================================== */

.contact-info {
  background: var(--color-light);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}

.contact-info h3 {
  margin-bottom: var(--space-md);
}

.contact-info__item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.contact-info__item svg {
  width: 20px;
  height: 20px;
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-info__item h4 {
  font-size: 0.95rem;
  margin-bottom: 0.15rem;
}

.contact-info__item p {
  font-size: 0.9rem;
  color: var(--color-dark);
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
}

@media (min-width: 768px) {
  .contact-layout {
    grid-template-columns: 1.2fr 0.8fr;
  }
}

/* ========================================
   Why Section (bullet list)
   ======================================== */

.why-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.95rem;
}

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

.why-list svg {
  width: 20px;
  height: 20px;
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 2px;
}

/* ========================================
   Privacy / Legal Page
   ======================================== */

.legal-content h2 {
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-sm);
}

.legal-content h3 {
  margin-top: var(--space-lg);
  margin-bottom: var(--space-xs);
}

.legal-content p {
  margin-bottom: var(--space-sm);
}

.legal-content ul {
  margin: var(--space-sm) 0 var(--space-sm) var(--space-md);
  list-style: disc;
}

.legal-content ul li {
  margin-bottom: 0.3rem;
  font-size: 0.95rem;
  color: var(--color-dark);
}

/* ========================================
   ConceptNests — brand adjustments
   Amber is used as a fill on dark backgrounds; on light backgrounds the
   darker amber keeps text and icons at accessible contrast.
   ======================================== */

.btn--primary:hover { background-color: #F3B85E; }
.btn--outline { color: var(--color-accent-dark); border-color: var(--color-accent-dark); }
.btn--outline:hover { background-color: var(--color-accent-dark); color: var(--color-white); }
.text-accent { color: var(--color-accent-dark); }
.section--dark .text-accent, .hero .text-accent, .page-hero .text-accent { color: var(--color-accent); }
.card__icon, .value-strip__icon, .values-grid__icon, .why-list svg, .contact-info__item svg,
.service-block__visual, .chip svg { color: var(--color-accent-dark); }
.service-block__deliverables li::before { background-color: var(--color-accent-dark); }
.card__features li::before { background-color: var(--color-accent-dark); }
.form__input:focus, .form__select:focus, .form__textarea:focus { border-color: var(--color-accent-dark); }
.footer__logo .logo-icon { color: var(--color-accent); }
.header__logo .logo-icon { width: 38px; height: 38px; }

/* Language switch in the header */
.lang-switch {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.4rem 0.7rem;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-full);
}
.lang-switch:hover { color: var(--color-white); border-color: var(--color-accent); }

/* Hero focus list (right column on the homepage) */
.hero__service { cursor: default; }
a.hero__service { cursor: pointer; }
.hero__service-icon {
  width: 40px; height: 40px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-md);
  background: rgba(233, 162, 59, 0.14);
  color: var(--color-accent-dark);
}
.hero__service-icon svg { width: 22px; height: 22px; }

/* Process steps */
.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  counter-reset: step;
}
@media (min-width: 768px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .steps { grid-template-columns: repeat(5, 1fr); } }
.step {
  position: relative;
  padding: var(--space-lg) var(--space-md) var(--space-md);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-accent);
  border-radius: var(--radius-lg);
}
.step__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-accent-dark);
  margin-bottom: var(--space-xs);
}
.step h3 { font-size: 1.05rem; margin-bottom: var(--space-xs); }
.step p { font-size: 0.9rem; color: var(--color-dark); }

/* Engagement phases */
.phase-grid { display: grid; grid-template-columns: 1fr; gap: var(--space-lg); }
@media (min-width: 900px) { .phase-grid { grid-template-columns: repeat(3, 1fr); } }
.phase {
  display: flex; flex-direction: column;
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.14);
}
.phase__label {
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--color-accent); margin-bottom: var(--space-xs);
}
.phase h3 { margin-bottom: var(--space-sm); }
.phase p { color: rgba(255, 255, 255, 0.75); font-size: 0.95rem; }
.phase ul { margin-top: var(--space-sm); }
.phase li {
  position: relative; padding-left: 1.25rem; margin-bottom: 0.4rem;
  font-size: 0.9rem; color: rgba(255, 255, 255, 0.8);
}
.phase li::before {
  content: ''; position: absolute; left: 0; top: 0.55rem;
  width: 7px; height: 7px; border-radius: 50%; background: var(--color-accent);
}
.section--dark .section__header p { color: rgba(255, 255, 255, 0.72); }

/* Founder experience */
.founder {
  display: grid; grid-template-columns: 1fr; gap: var(--space-xl); align-items: center;
}
@media (min-width: 900px) { .founder { grid-template-columns: 1.1fr 0.9fr; } }
.founder__copy h2 { margin-bottom: var(--space-md); }
.founder__copy p { color: var(--color-dark); font-size: 1.05rem; }
.founder__stats { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-md); }
.stat {
  padding: var(--space-lg) var(--space-md);
  border-radius: var(--radius-lg);
  background: var(--color-white);
  border: 1px solid var(--color-border);
}
.stat__value {
  display: block;
  font-family: var(--font-heading); font-weight: 700;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  color: var(--color-primary); line-height: 1.1;
}
.stat__label { display: block; margin-top: 0.35rem; font-size: 0.9rem; color: var(--color-dark); }
.stat--wide { grid-column: 1 / -1; }

/* Concept chips on dark/light backgrounds */
.chip-list--center { justify-content: center; }
.chip--lg { padding: 0.55rem 1.1rem; font-size: 0.95rem; background: var(--color-white); }

/* Honeypot field — hidden from people, visible to naive bots */
.form__hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* Chinese page typography */
:lang(zh) body, body:lang(zh) {
  font-family: 'Inter', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
}
:lang(zh) h1, :lang(zh) h2, :lang(zh) h3 { letter-spacing: 0; }
.hero--home:lang(zh) h1 { letter-spacing: 0; line-height: 1.25; }

.legal-content { max-width: 820px; }
.legal-content a { text-decoration: underline; text-underline-offset: 3px; }
.footer__slogan { margin-top: var(--space-sm); color: var(--color-accent); font-weight: 600; }
.card__link {
  margin-top: auto;
  display: inline-flex; align-items: center; gap: 0.35rem;
  font-family: var(--font-heading); font-weight: 600; font-size: 0.9rem;
  color: var(--color-accent-dark);
}
.card__link svg { transition: transform var(--transition-fast); }
.card__link:hover svg { transform: translateX(3px); }
.steps { list-style: none; }
/* Header CTA keeps dark text on the amber button (nav link colour would otherwise win) */
.nav__cta.btn--primary, .nav__cta.btn--primary:hover { color: var(--color-primary); }
.phase .phase__label { color: var(--color-accent); }