:root {
  --color-navy: #0F172A;
  --color-navy-light: #1E293B;
  --color-pearl: #F8FAFC;
  --color-pearl-dark: #F1F5F9;
  --color-gold: #D4AF37;
  --color-gold-dark: #8A6D08;
  --color-gold-dark-muted: #7A6208;
  --color-gold-muted: #C5A059;
  --color-anthracite: #1E293B;
  --color-text: #475569;
  --color-text-light: #64748B;
  --color-white: #FFFFFF;
  --color-border: #E2E8F0;
  --color-border-light: #F1F5F9;
  --font-heading: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --radius: 0.5rem;
  --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-anthracite);
  line-height: 1.2;
}

.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.header--scrolled {
  border-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-navy);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.logo span {
  color: var(--color-gold-dark);
}

.nav {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav__list {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav__link {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
  transition: color var(--transition);
  position: relative;
}

.nav__link:hover {
  color: var(--color-navy);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-gold);
  transition: width var(--transition);
}

.nav__link:hover::after {
  width: 100%;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.75rem;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
  border: 1px solid transparent;
}

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

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

.btn--outline {
  border-color: var(--color-gold-dark);
  color: var(--color-gold-dark);
  background-color: transparent;
}

.btn--outline:hover {
  background-color: var(--color-gold-dark-muted);
  color: var(--color-white);
}

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

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

.btn--small {
  padding: 0.625rem 1.25rem;
  font-size: 0.75rem;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.menu-toggle__bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-navy);
  transition: transform var(--transition), opacity var(--transition);
}

.menu-toggle[aria-expanded="true"] .menu-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-toggle__bar:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] .menu-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 10rem 0 6rem;
  background-color: var(--color-navy);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(212, 175, 55, 0.08) 0%, transparent 60%);
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 760px;
}

.hero__label {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-gold);
  margin-bottom: 1.5rem;
}

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.hero__subtitle {
  font-family: var(--font-body);
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
  color: rgba(248, 250, 252, 0.8);
  margin-bottom: 2.5rem;
  line-height: 1.7;
  max-width: 620px;
  margin-left: auto;
  margin-right: auto;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2rem;
}

.hero__meta {
  font-size: 0.8rem;
  color: rgba(248, 250, 252, 0.55);
  letter-spacing: 0.04em;
}

/* Sections */
.section {
  padding: 7rem 0;
}

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

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

.section--navy {
  background-color: var(--color-navy);
  color: rgba(248, 250, 252, 0.8);
}

.section--navy .section__title,
.section--navy h2 {
  color: var(--color-white);
}

.section__header {
  max-width: 680px;
  margin-bottom: 4rem;
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.section__header--left {
  text-align: left;
  margin-left: 0;
}

.section__tag {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-gold-dark);
  margin-bottom: 1rem;
}

.section__title {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 600;
  color: var(--color-anthracite);
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
}

.section__lead {
  font-size: 1.05rem;
  color: var(--color-text);
  line-height: 1.7;
}

.section--navy .section__lead {
  color: rgba(248, 250, 252, 0.7);
}

/* Pillars */
.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.pillar {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2.5rem;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.pillar:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-gold);
}

.pillar__icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  color: var(--color-gold);
}

.pillar__title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-anthracite);
  margin-bottom: 0.75rem;
}

.pillar__text {
  font-size: 0.95rem;
  color: var(--color-text);
  line-height: 1.7;
}

/* About */
.about__body {
  max-width: 760px;
  margin: 0 auto;
  text-align: left;
}

.about__body p {
  font-size: 1.05rem;
  color: var(--color-text);
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.about__body p:last-child {
  margin-bottom: 0;
}

/* Blog */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.blog-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.blog-card__image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-light) 100%);
}

.blog-card__content {
  padding: 1.75rem;
}

.blog-card__tag {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-gold-dark);
  margin-bottom: 0.75rem;
}

.blog-card__title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-anthracite);
  margin-bottom: 0.75rem;
  line-height: 1.35;
}

.blog-card__excerpt {
  font-size: 0.9rem;
  color: var(--color-text);
  line-height: 1.65;
  margin-bottom: 1.25rem;
}

.blog-card__link {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-gold-dark);
  transition: color var(--transition);
}

.blog-card__link:hover {
  color: var(--color-gold-dark-muted);
}

/* Contact */
.contact {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.contact__info {
  padding-top: 1rem;
}

.contact__info-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-anthracite);
  margin-bottom: 1rem;
}

.contact__info-text {
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: 2rem;
}

.contact__detail {
  margin-bottom: 1.5rem;
}

.contact__detail-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-light);
  margin-bottom: 0.25rem;
}

.contact__detail-value {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-anthracite);
}

.form {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2.5rem;
}

.form__group {
  margin-bottom: 1.25rem;
}

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form__label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-light);
  margin-bottom: 0.5rem;
}

.form__input {
  width: 100%;
  padding: 0.875rem 1rem;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--color-anthracite);
  background-color: var(--color-pearl);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form__input::placeholder {
  color: var(--color-text-light);
}

.form__input:focus {
  outline: none;
  border-color: var(--color-gold-dark);
  box-shadow: 0 0 0 3px rgba(138, 109, 8, 0.1);
}

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

.form__input[aria-invalid="true"] {
  border-color: #ef4444;
}

.form__error {
  display: none;
  font-size: 0.8rem;
  color: #ef4444;
  margin-top: 0.4rem;
}

.form__input[aria-invalid="true"] + .form__error {
  display: block;
}

.form__privacy {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin: 1.5rem 0;
}

.form__checkbox {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  accent-color: var(--color-gold-dark);
  flex-shrink: 0;
}

.form__checkbox-label {
  font-size: 0.85rem;
  color: var(--color-text);
}

.form__checkbox-label a {
  color: var(--color-gold-dark);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* Footer */
.footer {
  background-color: var(--color-navy);
  color: rgba(248, 250, 252, 0.7);
  padding: 5rem 0 2rem;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 4rem;
  margin-bottom: 4rem;
}

.footer__brand .logo {
  color: var(--color-white);
  margin-bottom: 1.25rem;
  display: inline-block;
}

.footer__desc {
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 320px;
}

.footer__disclaimer {
  font-size: 0.8rem;
  line-height: 1.6;
  color: rgba(248, 250, 252, 0.5);
  margin-top: 1rem;
  max-width: 360px;
}

.footer__heading {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-white);
  margin-bottom: 1.25rem;
}

.footer__links ul {
  list-style: none;
}

.footer__links li {
  margin-bottom: 0.75rem;
}

.footer__links a {
  font-size: 0.9rem;
  color: rgba(248, 250, 252, 0.7);
  transition: color var(--transition);
}

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

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(248, 250, 252, 0.1);
  font-size: 0.8rem;
  color: rgba(248, 250, 252, 0.5);
}

.footer__bottom a {
  color: rgba(248, 250, 252, 0.7);
  transition: color var(--transition);
}

.footer__bottom a:hover {
  color: var(--color-gold);
}

/* Utility */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.text-center {
  text-align: center;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background-color: var(--color-gold);
  color: var(--color-navy);
  padding: 0.75rem 1.25rem;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 600;
  text-decoration: none;
  z-index: 200;
  transition: top var(--transition);
}

.skip-link:focus {
  top: 0;
  outline: 2px solid var(--color-white);
  outline-offset: -2px;
}

/* Focus visible */
a:focus-visible,
button:focus-visible,
.btn:focus-visible,
.nav__link:focus-visible,
.footer__links a:focus-visible,
.footer__bottom a:focus-visible {
  outline: 2px solid var(--color-gold-dark);
  outline-offset: 2px;
  border-radius: 2px;
}

.form__input:focus-visible {
  outline: none;
  border-color: var(--color-gold-dark);
  box-shadow: 0 0 0 3px rgba(138, 109, 8, 0.1);
}

/* Privacy checkbox error */
.form__privacy {
  position: relative;
}

.form__privacy .form__error {
  display: none;
  flex-basis: 100%;
  margin-top: 0.4rem;
  margin-left: calc(18px + 0.75rem);
}

.form__privacy input[aria-invalid="true"] ~ .form__error {
  display: block;
}

/* Article page */
.article-page {
  padding-top: 120px;
  padding-bottom: 6rem;
  background-color: var(--color-pearl);
  min-height: 100vh;
}

.article-page__header {
  max-width: 720px;
  margin: 0 auto 3rem;
  text-align: center;
}

.article-page__tag {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-gold-dark);
  margin-bottom: 1rem;
}

.article-page__title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 600;
  color: var(--color-anthracite);
  margin-bottom: 1rem;
  line-height: 1.2;
}

.article-page__meta {
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.article-page__image {
  width: 100%;
  max-width: 900px;
  height: 400px;
  object-fit: cover;
  border-radius: var(--radius);
  margin: 0 auto 3rem;
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-light) 100%);
}

.article-page__content {
  max-width: 720px;
  margin: 0 auto;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 3rem;
}

.article-page__content h2 {
  font-size: 1.5rem;
  margin-top: 2rem;
  margin-bottom: 1rem;
}

.article-page__content h3 {
  font-size: 1.2rem;
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
}

.article-page__content p {
  margin-bottom: 1.25rem;
  color: var(--color-text);
  line-height: 1.8;
}

.article-page__content ul,
.article-page__content ol {
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
}

.article-page__content li {
  margin-bottom: 0.5rem;
  color: var(--color-text);
  line-height: 1.7;
}

.article-page__content strong {
  color: var(--color-anthracite);
  font-weight: 600;
}

.article-page__content a {
  color: var(--color-gold-dark);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.article-page__back {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 2rem;
  transition: color var(--transition);
}

.article-page__back:hover {
  color: var(--color-gold-dark);
}

.article-error {
  text-align: center;
  padding: 4rem 2rem;
}

/* Responsive */
@media (max-width: 992px) {
  .pillars,
  .blog-grid {
    grid-template-columns: 1fr;
  }

  .contact {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
  }
}

@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: min(320px, 80%);
    height: 100vh;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 2rem;
    padding: 6rem 2rem 2rem;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(24px);
    border-left: 1px solid var(--color-border);
    transition: right var(--transition);
    box-shadow: -20px 0 60px rgba(15, 23, 42, 0.1);
  }

  .nav--open {
    right: 0;
  }

  .nav__list {
    flex-direction: column;
    gap: 1.25rem;
  }

  .nav__link {
    font-size: 1.1rem;
    color: var(--color-anthracite);
  }

  .nav__cta {
    width: 100%;
    text-align: center;
  }

  .menu-toggle {
    display: flex;
    z-index: 110;
  }

  .hero {
    padding: 8rem 0 5rem;
  }

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

  .btn {
    width: 100%;
  }

  .section {
    padding: 5rem 0;
  }

  .pillar {
    padding: 2rem;
  }

  .form {
    padding: 1.75rem;
  }

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

  .footer__grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .footer__bottom {
    flex-direction: column;
    text-align: center;
  }

  .article-page__content {
    padding: 1.75rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1.25rem;
  }

  .hero__title {
    font-size: 1.85rem;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .fade-in {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .header,
  .nav__link,
  .btn,
  .pillar,
  .blog-card,
  .menu-toggle__bar,
  .skip-link {
    transition: none;
  }

  .pillar:hover,
  .blog-card:hover,
  .btn:hover {
    transform: none;
  }
}