@media (max-width: 1200px) {
  .site-header__inner,
  .page,
  .site-footer {
    width: min(100vw - 40px, 1180px);
  }

  .footer-main {
    grid-template-columns: minmax(0, 1.1fr) repeat(3, minmax(0, 0.8fr));
  }

  .welcome-premium-grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(320px, 0.94fr);
    gap: 24px;
  }

  .grid--4,
  .person-grid,
  .committee-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .pricing-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 1120px) {
  .site-nav__list {
    display: none;
  }

  .menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .site-nav.is-open .site-nav__list {
    position: absolute;
    top: calc(100% + 12px);
    left: 16px;
    right: 16px;
    display: grid;
    gap: 8px;
    padding: 12px;
    border-radius: 24px;
    background: rgba(7, 17, 31, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: 0 24px 64px rgba(4, 12, 26, 0.35);
    transform-origin: top;
    animation: navFadeIn 0.22s ease;
  }

  .site-nav.is-open .site-nav__link {
    justify-content: flex-start;
    border-radius: 16px;
  }

  .footer-main {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .hero__content,
  .contact-preview,
  .site-footer__inner {
    grid-template-columns: 1fr;
  }

  .hero__content {
    align-items: start;
    padding-top: 84px;
  }

  .hero__frame {
    min-height: clamp(600px, 74vh, 760px);
  }

  .page-hero__panel {
    min-height: clamp(480px, 72vh, 720px);
  }

  .split-countdown {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 1024px) {
  :root {
    --header-height: 80px;
  }

  .site-header__inner,
  .page,
  .site-footer {
    width: min(100vw - 32px, 1180px);
  }

  .site-header__inner {
    gap: 14px;
    padding: 10px 12px;
  }

  .brand__copy {
    max-width: 190px;
  }

  .hero__frame {
    min-height: clamp(560px, 70vh, 700px);
  }

  .hero__content {
    padding: 76px 28px 28px;
    gap: 18px;
  }

  .hero__title {
    font-size: clamp(1.4rem, 3.4vw, 2.2rem);
  }

  .hero__subtitle {
    max-width: 560px;
  }

  .hero-actions {
    gap: 12px;
  }

  .hero-actions .button,
  .hero-actions .button-link {
    flex: 0 1 auto;
  }

  .page-hero__panel,
  .section-shell {
    padding: 28px;
  }

  .page-hero__content {
    max-width: min(560px, 100%);
  }

  .travel-grid,
  .hotel-grid,
  .destination-grid,
  .food-grid,
  .contact-grid,
  .grid--3,
  .split-preview {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .committee-grid,
  .person-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .committee-toolbar {
    top: calc(var(--header-height) + 8px);
  }

  .committee-toolbar__layout,
  .committee-group__header,
  .committee-section__header {
    align-items: start;
    flex-direction: column;
  }

  .footer-cta-band__content {
    grid-template-columns: 1fr;
  }

  .footer-cta-band__actions {
    justify-content: flex-start;
  }
}

@media (max-width: 900px) {
  :root {
    --header-height: 76px;
  }

  .welcome-premium-grid {
    grid-template-columns: 1fr;
  }

  .welcome-side-stack {
    grid-template-columns: 1fr;
  }

  .welcome-letter-card,
  .welcome-photos-card,
  .welcome-verse-card {
    padding: 24px;
    border-radius: 28px;
  }

  .welcome-photo-frame {
    min-height: 220px;
  }

  .grid--3,
  .split-preview,
  .travel-grid,
  .hotel-grid,
  .destination-grid,
  .food-grid,
  .contact-grid,
  .person-grid,
  .committee-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pricing-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-hero__panel {
    min-height: clamp(420px, 64vh, 620px);
  }

  .footer-main {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 60px;
    --shadow: 0 14px 36px rgba(2, 9, 22, 0.2);
    --shadow-soft: 0 10px 22px rgba(2, 9, 22, 0.14);
  }

  body {
    background:
      radial-gradient(circle at top left, rgba(23, 182, 201, 0.15), transparent 30%),
      linear-gradient(180deg, #07111f 0%, #081726 45%, #07111f 100%);
  }

  .site-shell {
    padding-bottom: calc(120px + env(safe-area-inset-bottom, 0px));
  }

  .site-header {
    padding-top: 6px;
  }

  .site-header__inner,
  .page,
  .site-footer {
    width: min(100vw - 24px, 1180px);
  }

  .site-header__inner {
    padding: 6px 8px;
    border-radius: 18px;
    box-shadow: 0 8px 22px rgba(4, 12, 26, 0.16);
  }

  .mobile-header__inner {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 8px;
    min-height: 52px;
    padding: 6px 8px;
    background: linear-gradient(180deg, rgba(8, 20, 35, 0.84), rgba(8, 20, 35, 0.78));
    border-color: rgba(160, 205, 245, 0.1);
  }

  .menu-toggle {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    flex: 0 0 42px;
  }

  .mobile-header__brand {
    min-width: 0;
  }

  .brand__mark {
    width: 38px;
    height: 38px;
    border-radius: 12px;
  }

  .brand__copy {
    display: none;
  }

  .mobile-header__title {
    display: block;
    min-width: 0;
    padding-inline: 4px;
    text-align: center;
    font-family: var(--font-display);
    font-size: 0.88rem;
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.02em;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .mobile-header.is-scrolled {
    padding: 4px 0;
  }

  .mobile-header.is-scrolled .mobile-header__inner {
    gap: 7px;
    min-height: 48px;
    padding: 5px 7px;
    background: linear-gradient(180deg, rgba(7, 18, 31, 0.96), rgba(7, 18, 31, 0.9));
    border-color: rgba(240, 210, 125, 0.12);
    box-shadow: 0 14px 28px rgba(4, 12, 26, 0.22);
  }

  .mobile-header.is-scrolled .brand__mark {
    width: 34px;
    height: 34px;
    border-radius: 11px;
  }

  .mobile-header.is-scrolled .mobile-header__title {
    font-size: 0.82rem;
  }

  .mobile-header.is-scrolled .menu-toggle {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    box-shadow: 0 12px 22px rgba(0, 0, 0, 0.22);
  }

  .mobile-header__nav {
    margin-left: 0;
    justify-self: end;
  }

  .site-nav.is-open .site-nav__list {
    top: calc(100% + 8px);
    left: auto;
    right: 0;
    width: min(280px, calc(100vw - 24px));
    gap: 6px;
    padding: 10px;
    border-radius: 18px;
    background: rgba(7, 17, 31, 0.96);
    box-shadow: 0 20px 42px rgba(4, 12, 26, 0.28);
  }

  .site-nav.is-open .site-nav__link {
    min-height: 42px;
    justify-content: flex-start;
    padding-inline: 14px;
    border-radius: 14px;
    font-size: 0.9rem;
  }

  .site-nav__item--mobile-cta {
    display: block;
    margin-top: 4px;
  }

  .site-nav__mobile-cta {
    width: 100%;
    min-height: 44px;
    border-radius: 14px;
  }

  .header-actions .button-link--primary {
    display: none;
  }

  .header-actions {
    display: none;
  }

  .hero {
    padding-top: 8px;
  }

  .hero__frame {
    min-height: clamp(420px, 56vh, 520px);
    border-radius: 28px;
    box-shadow: 0 18px 48px rgba(3, 10, 24, 0.24);
  }

  .hero__content {
    padding: 64px 18px 20px;
    gap: 14px;
  }

  .hero__title {
    font-size: clamp(1.08rem, 5.2vw, 1.46rem);
    line-height: 1.04;
  }

  .hero__subtitle {
    max-width: 100%;
    font-size: 0.88rem;
    line-height: 1.54;
  }

  .association-strip,
  .hero-meta {
    gap: 10px;
  }

  .association-logo {
    width: 46px;
    height: 46px;
    border-radius: 14px;
  }

  .hero-meta__item,
  .hero-card,
  .action-card,
  .info-card,
  .hotel-card,
  .contact-card,
  .person-card,
  .feature-card,
  .destination-card,
  .travel-card,
  .food-card,
  .pricing-card,
  .section-shell,
  .page-hero__panel {
    border-radius: 24px;
  }

  .association-logo,
  .leader-card,
  .back-to-top,
  .mobile-nav,
  .mobile-register-bar {
    box-shadow: 0 10px 24px rgba(4, 12, 26, 0.18);
  }

  .hero-actions,
  .page-hero__actions {
    gap: 8px;
  }

  .hero-actions .button,
  .hero-actions .button-link,
  .page-hero__actions .button,
  .page-hero__actions .button-link {
    min-height: 44px;
  }

  .hero-countdown-shell {
    padding: 12px;
    border-radius: 22px;
  }

  .hero-countdown-title {
    font-size: clamp(0.96rem, 3.5vw, 1.1rem);
  }

  .hero-countdown-subtitle {
    font-size: 0.76rem;
  }

  .split-countdown {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 6px;
  }

  .flip-card {
    min-height: 64px;
    border-radius: 14px;
  }

  .flip-card__value {
    font-size: clamp(1.15rem, 4.6vw, 1.5rem);
  }

  .split-countdown__label {
    font-size: 0.56rem;
    letter-spacing: 0.08em;
    white-space: nowrap;
  }

  .section-shell,
  .page-hero__panel {
    padding: 22px;
  }

  .page-hero__panel {
    min-height: clamp(340px, 58vh, 460px);
  }

  .page-hero__content {
    max-width: 100%;
  }

  .page-title {
    font-size: clamp(1.8rem, 8.4vw, 2.55rem);
  }

  .page-subtitle {
    font-size: 0.96rem;
    line-height: 1.7;
  }

  .page-hero__actions {
    width: 100%;
  }

  .page-hero__actions .button,
  .page-hero__actions .button-link {
    flex: 1 1 calc(50% - 5px);
  }

  .welcome-premium-shell {
    padding: 0;
    border-radius: 0;
    background: none;
  }

  .welcome-letter-card,
  .welcome-photos-card,
  .welcome-verse-card {
    padding: 20px;
    border-radius: 24px;
  }

  .welcome-title {
    font-size: clamp(0.98rem, 4.4vw, 1.24rem);
  }

  .welcome-letter-body {
    font-size: 0.95rem;
    line-height: 1.8;
  }

  .welcome-photos-grid {
    gap: 12px;
  }

  .welcome-photo-frame {
    min-height: 180px;
    border-radius: 20px;
  }

  .leadership-card__name {
    font-size: 0.94rem;
  }

  .leadership-card__role {
    font-size: 0.78rem;
  }

  .welcome-photos-caption {
    font-size: 0.94rem;
  }

  .welcome-verse-card {
    min-height: 0;
  }

  .welcome-verse-quote {
    font-size: clamp(1.3rem, 6vw, 1.7rem);
  }

  .person-card__name,
  .person-card__role {
    min-height: 0;
  }

  .grid--2,
  .grid--3,
  .grid--4,
  .split-preview,
  .travel-grid,
  .hotel-grid,
  .destination-grid,
  .food-grid,
  .contact-grid,
  .person-grid,
  .committee-grid,
  .pricing-grid,
  .footer-main {
    grid-template-columns: 1fr;
  }

  .footer-cta-band,
  .footer-main,
  .footer-bottom {
    border-radius: 24px;
  }

  .footer-main {
    gap: 18px;
    padding: 22px 20px;
  }

  .footer-bottom {
    padding: 16px 20px;
    justify-content: flex-start;
  }

  .footer-credit {
    text-align: left;
  }

  .touch-scroll {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: minmax(78%, 300px);
    overflow-x: auto;
    overscroll-behavior-x: contain;
    -webkit-overflow-scrolling: touch;
    scroll-snap-type: x proximity;
    padding-bottom: 4px;
  }

  .touch-scroll > * {
    min-width: 0;
    scroll-snap-align: start;
  }

  .touch-scroll.grid--4,
  .touch-scroll.pricing-grid {
    grid-template-columns: none;
  }

  .touch-scroll.split-preview {
    grid-auto-columns: minmax(86%, 340px);
  }

  .pricing-table {
    min-width: 680px;
  }

  .committee-toolbar {
    top: calc(var(--header-height) + 6px);
  }

  .committee-toolbar__layout {
    align-items: stretch;
  }

  .committee-toolbar__search {
    min-width: 100%;
  }

  .person-card,
  .committee-card {
    align-items: flex-start;
    text-align: left;
  }

  .person-card__media,
  .committee-card__media {
    width: 84px;
    height: 84px;
    flex-basis: 84px;
  }

  .committee-card {
    padding: 18px;
  }

  .sticky-cta-panel {
    bottom: calc(164px + env(safe-area-inset-bottom, 0px));
    align-items: stretch;
  }

  .sticky-cta-panel .button,
  .sticky-cta-panel .button-link {
    width: 100%;
  }

  .section-heading {
    margin-bottom: 18px;
  }

  .page-section {
    padding: 22px 0;
  }

  .mobile-register-bar,
  .mobile-nav {
    display: none !important;
  }

  .back-to-top {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    right: 12px;
    bottom: calc(16px + env(safe-area-inset-bottom, 0px));
  }

  .card-actions {
    width: 100%;
  }

  .card-actions .button,
  .card-actions .button-link {
    flex: 1 1 auto;
  }

  .sort-row,
  .control-bar {
    flex-direction: column;
    align-items: stretch;
  }

  .sort-select {
    width: 100%;
    min-width: 0;
  }

  .footer-cta-band__actions .button,
  .footer-cta-band__actions .button-link {
    width: 100%;
  }
}

@media (max-width: 640px) {
  .hero__frame {
    min-height: clamp(390px, 54vh, 470px);
  }

  .hero__content {
    padding: 60px 16px 18px;
  }

  .hero-actions .button,
  .hero-actions .button-link,
  .page-hero__actions .button,
  .page-hero__actions .button-link {
    flex: 1 1 100%;
    width: 100%;
  }

  .welcome-photos-grid {
    grid-template-columns: 1fr 1fr;
  }

  .welcome-photo-frame {
    min-height: 160px;
  }

  .footer-cta-band {
    padding: 20px;
  }

  .footer-cta-band__title {
    font-size: clamp(1.45rem, 7vw, 2rem);
  }
}

@media (max-width: 480px) {
  .site-header__inner,
  .page,
  .site-footer {
    width: min(100vw - 18px, 1180px);
  }

  .site-header__inner {
    padding: 5px 6px;
  }

  .mobile-header__inner {
    gap: 6px;
    min-height: 48px;
    padding: 5px 6px;
  }

  .brand__mark {
    width: 40px;
    height: 40px;
  }

  .menu-toggle {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    gap: 4px;
  }

  .menu-toggle__bar {
    width: 18px;
    height: 2px;
  }

  .site-nav.is-open .site-nav__list {
    width: min(250px, calc(100vw - 18px));
    padding: 8px;
    border-radius: 16px;
  }

  .mobile-header__title {
    font-size: 0.78rem;
    padding-inline: 2px;
  }

  .mobile-header.is-scrolled .mobile-header__inner {
    gap: 6px;
    min-height: 44px;
    padding: 4px 5px;
  }

  .mobile-header.is-scrolled .brand__mark {
    width: 32px;
    height: 32px;
  }

  .mobile-header.is-scrolled .mobile-header__title {
    font-size: 0.74rem;
  }

  .mobile-header.is-scrolled .menu-toggle {
    width: 34px;
    height: 34px;
    border-radius: 11px;
  }

  .hero__frame {
    min-height: clamp(360px, 52vh, 430px);
    border-radius: 24px;
  }

  .hero__content {
    padding: 56px 14px 16px;
  }

  .hero__title {
    font-size: clamp(1rem, 5vw, 1.28rem);
  }

  .hero__subtitle {
    font-size: 0.84rem;
  }

  .hero-meta__item {
    min-width: 100%;
  }

  .hero-countdown-shell {
    padding: 10px;
  }

  .flip-card {
    min-height: 58px;
  }

  .flip-card__value {
    font-size: clamp(1rem, 4.4vw, 1.24rem);
  }

  .split-countdown__label {
    font-size: 0.52rem;
  }

  .section-shell,
  .page-hero__panel {
    padding: 18px;
  }

  .page-hero__panel {
    min-height: clamp(320px, 54vh, 420px);
    border-radius: 24px;
  }

  .page-title {
    font-size: clamp(1.55rem, 8vw, 2.1rem);
  }

  .page-subtitle,
  .section-text,
  .lead {
    font-size: 0.93rem;
    line-height: 1.72;
  }

  .committee-toolbar,
  .committee-toolbar--static {
    top: calc(var(--header-height) + 4px);
  }

  .chip,
  .tab-button {
    min-height: 42px;
    padding: 0 14px;
    font-size: 0.82rem;
  }

  .accordion-trigger {
    min-height: 64px;
    padding: 16px 18px;
  }

  .committee-card,
  .person-card,
  .pricing-card,
  .hotel-card,
  .contact-card,
  .destination-card,
  .travel-card,
  .food-card {
    padding: 16px;
  }

  .footer-main,
  .footer-bottom {
    padding-inline: 18px;
  }
}

@media (max-width: 390px) {
  .mobile-header__title {
    font-size: 0.72rem;
  }

  .mobile-header.is-scrolled .mobile-header__title {
    font-size: 0.68rem;
  }

  .hero__content {
    padding-inline: 12px;
  }

  .hero__title {
    font-size: clamp(0.94rem, 4.8vw, 1.14rem);
  }

  .hero__subtitle {
    font-size: 0.8rem;
  }

  .hero-meta {
    margin-top: 20px;
  }

  .flip-card {
    min-height: 54px;
    border-radius: 14px;
  }

  .flip-card__value {
    font-size: clamp(0.94rem, 4.2vw, 1.12rem);
  }

  .split-countdown__label {
    font-size: 0.48rem;
    letter-spacing: 0.06em;
  }

  .welcome-letter-card,
  .welcome-photos-card,
  .welcome-verse-card,
  .footer-cta-band,
  .footer-main,
  .footer-bottom {
    border-radius: 20px;
  }

  .welcome-photo-frame {
    min-height: 148px;
    border-radius: 18px;
  }

  .leadership-card__name {
    font-size: 0.9rem;
  }

  .leadership-card__role {
    font-size: 0.74rem;
  }

  .page-section {
    padding: 20px 0;
  }
}

@keyframes navFadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px) scale(0.98);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}