@media (max-width: 1180px) {
  .nav-shell {
    width: min(100% - 32px, 1080px);
    grid-template-columns: auto auto;
    justify-content: space-between;
    gap: 18px;
  }

  .brand img {
    width: 204px;
  }

  .menu-toggle {
    display: block;
  }

  .menu-open .menu-toggle span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .menu-open .menu-toggle span:nth-child(2) {
    opacity: 0;
  }

  .menu-open .menu-toggle span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .nav-menu,
  .nav-actions {
    position: fixed;
    left: 16px;
    right: 16px;
    display: none;
    background: var(--white);
    box-shadow: var(--shadow);
  }

  .nav-menu {
    top: 88px;
    padding: 18px;
    flex-direction: column;
    align-items: stretch;
    border-radius: 10px 10px 0 0;
  }

  .nav-actions {
    top: 446px;
    padding: 18px;
    border-radius: 0 0 10px 10px;
  }

  .menu-open .nav-menu,
  .menu-open .nav-actions {
    display: flex;
  }

  .hero-inner {
    grid-template-columns: 1fr 0.8fr;
  }

  .timeline-grid {
    grid-template-columns: repeat(2, 1fr);
    row-gap: 58px;
  }

  .timeline-card::before,
  .timeline-card::after {
    display: none;
  }

  .split-section,
  .lower-grid {
    grid-template-columns: 1fr;
  }

  .leaderboard-panel {
    min-height: 420px;
  }
}

@media (max-width: 900px) {
  .hero {
    min-height: auto;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    min-height: auto;
    padding: 54px 0 118px;
  }

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

  .hero-tags,
  .hero-actions {
    justify-content: center;
  }

  .hero-subtitle {
    margin: 0 auto;
  }

  .trophy-stage {
    min-height: 390px;
    order: -1;
  }

  .trophy-img {
    width: min(330px, 76%);
  }

  .orbit {
    width: 68px;
    height: 68px;
  }

  .orbit-one { left: 19%; top: 20px; }
  .orbit-two { left: 9%; top: 165px; }
  .orbit-three { right: 12%; top: 122px; }
  .orbit-four { right: 8%; bottom: 54px; }

  .countdown-card {
    grid-template-columns: 72px 1fr;
    padding: 28px;
  }

  .timer {
    grid-column: 1 / -1;
    margin-top: 8px;
  }

  .clock-badge {
    width: 66px;
    height: 66px;
    border-width: 5px;
  }

  .step-row {
    grid-template-columns: 1fr 1fr;
    gap: 28px 18px;
  }

  .flow-arrow {
    display: none;
  }

  .cta {
    grid-template-columns: 110px 1fr;
    padding: 24px;
  }

  .cta .btn {
    grid-column: 1 / -1;
    width: 100%;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 38px;
  }

  .footer-grid > div:first-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 680px) {
  .nav-shell,
  .hero-inner,
  .section,
  .split-section,
  .cta,
  .footer-grid,
  .footer-bottom,
  .countdown-card {
    width: calc(100% - 28px);
  }

  .brand img {
    width: 178px;
  }

  .nav-shell {
    min-height: 74px;
  }

  .nav-menu {
    top: 74px;
  }

  .nav-actions {
    top: 432px;
    flex-direction: column;
  }

  .nav-actions .btn {
    width: 100%;
  }

  .hero-inner {
    padding-top: 30px;
  }

  .hero-kicker {
    font-size: clamp(62px, 22vw, 90px);
  }

  .hero h1 {
    font-size: clamp(36px, 12vw, 54px);
  }

  .hero-subtitle {
    font-size: 19px;
  }

  .hero-tags {
    margin: 26px 0 30px;
    font-size: 14px;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .btn-large {
    width: 100%;
    min-height: 58px;
  }

  .trophy-stage {
    min-height: 318px;
  }

  .trophy-img {
    width: min(280px, 82%);
  }

  .orbit {
    width: 54px;
    height: 54px;
  }

  .orb-icon {
    transform: scale(0.76);
  }

  .countdown-card {
    grid-template-columns: 1fr;
    text-align: center;
    justify-items: center;
    margin-top: -58px;
    padding: 24px 16px;
  }

  .timer {
    width: 100%;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px 0;
  }

  .timer div:nth-child(odd) {
    border-left: 0;
  }

  .timer div {
    padding: 8px 0;
  }

  .section-title {
    gap: 14px;
    margin-bottom: 50px;
  }

  .section-title span {
    width: 52px;
  }

  .timeline-grid {
    grid-template-columns: 1fr;
    gap: 52px;
  }

  .timeline-card {
    min-height: 260px;
  }

  .info-panel,
  .leaderboard-panel {
    padding: 28px 18px;
  }

  .step-row {
    grid-template-columns: 1fr;
  }

  .step-icon {
    margin-bottom: 18px;
  }

  .panel-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .announcement-item {
    grid-template-columns: 76px 1fr;
    gap: 14px;
    padding: 10px;
  }

  .announcement-item time {
    width: 70px;
    height: 70px;
  }

  .announcement-item time strong {
    font-size: 24px;
  }

  .faq-question {
    min-height: 54px;
    padding: 8px 14px;
    font-size: 14px;
  }

  .cta {
    grid-template-columns: 1fr;
    text-align: center;
    justify-items: center;
  }

  .cta img {
    width: 116px;
  }

  .cta p {
    font-size: 15px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

  .footer-bottom {
    min-height: auto;
    padding: 22px 0;
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (min-width: 1440px) {
  .hero-inner,
  .nav-shell {
    width: min(1370px, calc(100% - 80px));
  }

  .countdown-card,
  .section,
  .split-section,
  .cta,
  .footer-grid,
  .footer-bottom {
    width: min(1280px, calc(100% - 80px));
  }
}