:root {
      --ink: #1a1a18;
      --paper: #f4f0e8;
      --warm: #e8e0cc;
      --accent: #e4002b;
      --accent-muted: #e8b8aa;
      --grid: #d4ccb8;
      --mono: 'DM Mono', monospace;
      --serif: 'Cormorant Garamond', serif;
    }

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

    html { scroll-behavior: smooth; }

    body {
      background: var(--paper);
      color: var(--ink);
      font-family: var(--serif);
      min-height: 100vh;
      position: relative;
      overflow-x: hidden;
    }

    /* Grid overlay */
    body::before {
      content: '';
      position: fixed;
      inset: 0;
      background-image:
        linear-gradient(var(--grid) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid) 1px, transparent 1px);
      background-size: 48px 48px;
      opacity: 0.35;
      pointer-events: none;
      z-index: 0;
    }

    /* NAV */
    nav {
      position: sticky;
      top: 0;
      z-index: 100;
      background: var(--ink);
      display: flex;
      align-items: stretch;
      height: 56px;
      border-bottom: 2px solid var(--accent);
    }

    .nav-brand {
      display: flex;
      align-items: center;
      padding: 0 28px;
      font-family: var(--mono);
      font-size: 13px;
      font-weight: 500;
      letter-spacing: 0.18em;
      text-transform: uppercase;
      color: var(--paper);
      border-right: 1px solid rgba(255,255,255,0.1);
      white-space: nowrap;
    }

    .nav-brand span {
      color: var(--accent);
      margin-right: 8px;
    }

    .nav-tabs {
      display: flex;
      flex: 1;
    }

    .tab-btn {
      display: flex;
      align-items: center;
      text-align: center;
      text-decoration: none;
      padding: 0 24px;
      background: none;
      border: none;
      border-right: 1px solid rgba(255,255,255,0.08);
      color: rgba(244,240,232,0.5);
      font-family: var(--mono);
      font-size: 13px;
      font-weight: 400;
      letter-spacing: 0.18em;
      text-transform: uppercase;
      cursor: pointer;
      transition: all 0.2s ease;
      position: relative;
    }

    .tab-btn:hover {
      color: var(--paper);
      background: rgba(255,255,255,0.04);
    }

    .tab-btn.active {
      color: var(--accent);
      background: rgba(200,56,26,0.08);
    }

    .tab-btn.active::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      height: 2px;
      background: var(--accent);
    }

    /* PAGE WRAPPER */
    .page {
      display: none;
      position: relative;
      z-index: 1;
      animation: fadeUp 0.45s ease both;
    }

    .page.active { display: block; }

    @keyframes fadeUp {
      from { opacity: 0; transform: translateY(16px); }
      to   { opacity: 1; transform: translateY(0); }
    }

    /* HERO */
    .hero {
      padding: 80px 48px 64px;
      max-width: 960px;
      margin: 0 auto;
      border-left: 1px solid var(--grid);
      border-right: 1px solid var(--grid);
      min-height: 340px;
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      position: relative;
    }

    .hero-eyebrow {
      font-family: var(--mono);
      font-size: 12px;
      letter-spacing: 0.22em;
      text-transform: uppercase;
      color: var(--accent);
      margin-bottom: 20px;
    }

    .hero h1 {
      font-size: clamp(52px, 8vw, 96px);
      font-weight: 300;
      line-height: 0.95;
      letter-spacing: -0.02em;
      color: var(--ink);
    }

    .hero h1 em {
      font-style: italic;
      color: var(--accent);
    }

    .hero-sub {
      margin-top: 24px;
      font-size: 18px;
      font-weight: 300;
      line-height: 1.6;
      color: #5a5648;
      max-width: 520px;
    }

    .competition-logo {
      display: flex;
      justify-content: center;
      margin: 0 auto;
      padding: 0 24px;
    }

    #tab-competition .competition-logo {
      background: var(--c-teal-dark);
      padding: 40px 24px 0;
      margin: 0;
    }

    .competition-logo svg,
    .competition-logo img {
      width: min(520px, 100%);
      height: auto;
      display: block;
    }

    /* DIVIDER */
    .rule {
      max-width: 960px;
      margin: 0 auto;
      border: none;
      border-top: 1px solid var(--grid);
    }

    /* SECTION */
    section {
      max-width: 960px;
      margin: 0 auto;
      padding: 120px 100px;
      border-left: 1px solid var(--grid);
      border-right: 1px solid var(--grid);
    }

    section + section {
      border-top: 1px solid var(--grid);
    }

    .section-label {
      font-family: var(--mono);
      font-size: 11px;
      letter-spacing: 0.26em;
      text-transform: uppercase;
      color: #a09880;
      margin-bottom: 32px;
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .section-label::after {
      content: '';
      flex: 1;
      height: 1px;
      background: var(--grid);
    }

    .section-title {
      font-size: clamp(28px, 4vw, 44px);
      font-weight: 300;
      line-height: 1.15;
      margin-bottom: 20px;
    }

    .section-body {
      font-size: 17px;
      font-weight: 300;
      line-height: 1.75;
      color: #4a4438;
      max-width: 600px;
    }

    /* PLACEHOLDER BLOCK */
    .placeholder {
      background: var(--warm);
      border: 1px dashed var(--grid);
      border-radius: 2px;
      padding: 28px 32px;
      margin-top: 28px;
      font-family: var(--mono);
      font-size: 13px;
      color: #a09880;
      letter-spacing: 0.06em;
      line-height: 1.8;
    }

    .placeholder strong {
      display: block;
      color: #7a7060;
      font-weight: 500;
      margin-bottom: 6px;
      text-transform: uppercase;
      letter-spacing: 0.14em;
      font-size: 11px;
    }

    /* CONTACT GRID */
    .contact-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 16px;
      margin-top: 32px;
    }

    .contact-card {
      background: var(--warm);
      padding: 28px;
      border: 1px solid var(--grid);
      transition: border-color 0.2s;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .contact-card:hover { border-color: var(--accent-muted); }

    .contact-card-label {
      font-family: var(--mono);
      font-size: 11px;
      letter-spacing: 0.2em;
      text-transform: uppercase;
      color: var(--accent);
      margin-bottom: 10px;
    }

    .contact-card-value {
      font-size: 16px;
      font-weight: 300;
      color: #7a7060;
      font-style: italic;
      line-height: 1.5;
      overflow-wrap: anywhere;
      word-break: break-word;
    }

    .contact-card-value a {
      color: #7a7060;
      text-decoration: none;
    }

    .contact-card-value a:hover {
      color: var(--ink);
      text-decoration: underline;
    }

    /* AWARD TIERS */
    .award-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2px;
      margin-top: 32px;
    }

    @media (max-width: 640px) {
      .award-grid { grid-template-columns: 1fr; }
    }

    .award-card {
      border: 1px solid var(--grid);
      padding: 32px 28px;
      position: relative;
      background: var(--paper);
      transition: background 0.2s;
    }

    .award-card:hover { background: var(--warm); }

    .award-card.gold { border-top: 3px solid #c8a02a; }
    .award-card.silver { border-top: 3px solid #9aa0a8; }
    .award-card.bronze { border-top: 3px solid #b07848; }

    .award-tier {
      font-family: var(--mono);
      font-size: 11px;
      letter-spacing: 0.22em;
      text-transform: uppercase;
      color: #a09880;
      margin-bottom: 12px;
    }

    .award-title {
      font-size: 24px;
      font-weight: 300;
      margin-bottom: 8px;
    }

    .award-prize {
      font-family: var(--mono);
      font-size: 15px;
      color: var(--accent);
      font-weight: 500;
    }

    /* TIMELINE */
    .timeline {
      margin-top: 32px;
      display: flex;
      flex-direction: column;
      gap: 0;
    }

    .timeline-item {
      display: grid;
      grid-template-columns: 160px 1fr;
      gap: 24px;
      padding: 24px 0;
      border-bottom: 1px solid var(--grid);
      align-items: start;
    }

    .timeline-item:first-child { border-top: 1px solid var(--grid); }

    .timeline-date {
      font-family: var(--mono);
      font-size: 13px;
      color: var(--accent);
      letter-spacing: 0.08em;
      padding-top: 2px;
    }

    .timeline-event {
      font-size: 17px;
      font-weight: 300;
    }

    .timeline-detail {
      font-family: var(--mono);
      font-size: 12px;
      color: #a09880;
      margin-top: 4px;
      letter-spacing: 0.06em;
    }

    /* TEAM GRID */
    .team-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
      gap: 2px;
      margin-top: 32px;
    }

    .team-card {
      background: var(--warm);
      border: 1px solid var(--grid);
      padding: 24px 20px;
    }

    .team-name {
      font-size: 17px;
      font-weight: 400;
      margin-bottom: 4px;
    }

    .team-role {
      font-family: var(--mono);
      font-size: 11px;
      letter-spacing: 0.16em;
      text-transform: uppercase;
      color: #a09880;
    }

    /* FOOTER */
    footer {
      max-width: 960px;
      margin: 0 auto;
      padding: 32px 48px;
      border-left: 1px solid var(--grid);
      border-right: 1px solid var(--grid);
      border-top: 2px solid var(--ink);
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
    }

    footer .footer-logo {
      height: 44px;
      width: auto;
      margin-right: 18px;
      flex-shrink: 0;
    }

    footer .footer-brand {
      font-family: var(--mono);
      font-size: 12px;
      letter-spacing: 0.18em;
      text-transform: uppercase;
      color: #a09880;
    }

    footer .footer-brand strong { color: var(--ink); }

    footer .footer-note {
      font-family: var(--mono);
      font-size: 11px;
      color: #c0b8a8;
      letter-spacing: 0.1em;
    }

    @media (max-width: 600px) {
      .hero, section, footer { padding-left: 24px; padding-right: 24px; }
      .hero { padding-top: 48px; }
      .timeline-item { grid-template-columns: 1fr; gap: 4px; }
    }

    /* ===== COMPETITION PAGE THEME ===== */
    #tab-competition {
      --c-teal: #1d5c54;
      --c-teal-dark: #143f3a;
      --c-teal-light: #2a7a6f;
      --c-cream: #f0ece3;
      --c-cream-dark: #e2ddd3;
      --c-grid: #c8c2b0;
    }

    #tab-competition body { background: var(--c-cream); }

    #tab-competition .hero {
      background: var(--c-teal-dark);
      border-left: none;
      border-right: none;
      max-width: 100%;
      padding: 0px 48px 64px;
    }

    #tab-competition .hero-eyebrow { color: #7fcfc6; }
    #tab-competition .hero h1 { color: #f0ece3; }
    #tab-competition .hero h1 em { color: #7fcfc6; font-style: italic; }
    #tab-competition .hero-sub { color: #a8c8c4; }

    /* Hero logo layout */
    .comp-hero-inner {
      max-width: 960px;
      margin: 0 auto;
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      gap: 40px;
      flex-wrap: wrap;
    }

    #tab-competition section {
      background: var(--c-cream);
      border-left: 1px solid var(--c-grid);
      border-right: 1px solid var(--c-grid);
    }

    #tab-competition section + section {
      border-top: 1px solid var(--c-grid);
    }

    #tab-competition .section-label { color: #6a8c89; }
    #tab-competition .section-label::after { background: var(--c-grid); }

    #tab-competition .section-title { color: var(--c-teal-dark); }
    #tab-competition .section-body { color: #3a4e4c; }

    #tab-competition .contact-card {
      background: var(--c-cream-dark);
      border-color: var(--c-grid);
    }
    #tab-competition .contact-card:hover { border-color: var(--c-teal-light); }
    #tab-competition .contact-card-label { color: var(--c-teal); }
    #tab-competition .contact-card-value { color: #3a5450; }

    #tab-competition .award-card {
      background: var(--c-cream);
      border-color: var(--c-grid);
    }
    #tab-competition .award-card:hover { background: var(--c-cream-dark); }
    #tab-competition .award-card.gold { border-top: 3px solid #c8a02a; }
    #tab-competition .award-card.silver { border-top: 3px solid #7a9ea0; }
    #tab-competition .award-card.bronze { border-top: 3px solid #b07848; }
    #tab-competition .award-card.student { border-top: 3px solid #4ba0c8; }
    #tab-competition .award-tier { color: #6a8c89; }
    #tab-competition .award-title { color: var(--c-teal-dark); }
    #tab-competition .award-prize { color: var(--c-teal); font-size: 20px; }

    #tab-competition .timeline-item { border-color: var(--c-grid); }
    #tab-competition .timeline-item:first-child { border-color: var(--c-grid); }
    #tab-competition .timeline-date { color: var(--c-teal); }
    #tab-competition .timeline-event { color: var(--c-teal-dark); }
    #tab-competition .timeline-detail { color: #7a9a97; }

    #tab-competition .team-card {
      background: var(--c-cream-dark);
      border-color: var(--c-grid);
    }
    #tab-competition .team-name { color: var(--c-teal-dark); }
    #tab-competition .team-role { color: #6a8c89; }

    #tab-competition footer {
      background: var(--c-teal-dark);
      border-top: 2px solid var(--c-teal);
      border-left: none;
      border-right: none;
      max-width: 100%;
      padding: 32px 48px;
    }
    #tab-competition footer .footer-brand { color: #a8c8c4; }
    #tab-competition footer .footer-brand strong { color: #f0ece3; }
    #tab-competition footer .footer-note { color: #7fcfc6; }

    /* Diagram image block */
    .comp-diagram-wrap {
      margin-top: 40px;
      border: 1px solid var(--c-grid);
      background: #fff;
      padding: 24px;
      text-align: center;
    }
    .comp-diagram-wrap img {
      max-width: 100%;
      height: auto;
      display: block;
      margin: 0 auto;
    }
    .comp-diagram-caption {
      font-family: var(--mono);
      font-size: 11px;
      letter-spacing: 0.16em;
      text-transform: uppercase;
      color: #6a8c89;
      margin-top: 14px;
    }

    /* Criteria spec cards — teal variant */
    #tab-competition .spec-card {
      background: var(--c-cream-dark);
      border: 1px solid var(--c-grid);
      padding: 20px 24px;
    }
    #tab-competition .spec-card-label {
      font-family: var(--mono);
      font-size: 11px;
      letter-spacing: 0.2em;
      text-transform: uppercase;
      color: var(--c-teal);
      margin-bottom: 8px;
    }
    #tab-competition .spec-card-value {
      font-size: 15px;
      font-weight: 300;
      color: #2a4a47;
      line-height: 1.5;
    }

    #tab-competition h3.sub-label {
      font-family: var(--mono);
      font-size: 12px;
      letter-spacing: 0.2em;
      text-transform: uppercase;
      color: #6a8c89;
      margin-top: 48px;
      margin-bottom: 20px;
    }

    .comp-footer-inner {
      max-width: 960px;
      margin: 0 auto;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
    }
    .comp-footer-logo {
      height: 56px;
      width: auto;
    }


    /* SOCIAL LINKS (contact) */
    .social-links {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-top: 24px;
    }
    .social-link {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 10px;
      width: 120px;
      padding: 24px 12px;
      background: var(--warm);
      color: var(--ink);
      text-decoration: none;
      transition: color 0.2s ease, background 0.2s ease, transform 0.2s ease;
    }
    .social-link svg {
      width: 32px;
      height: 32px;
      fill: currentColor;
    }
    .social-link-label {
      font-family: var(--mono);
      font-size: 12px;
      letter-spacing: 0.2em;
      text-transform: uppercase;
    }
    .social-link:hover {
      color: var(--accent);
      background: var(--paper);
      transform: translateY(-2px);
    }

    /* BUTTONS */
    .btn {
      display: inline-block;
      font-family: var(--mono);
      font-size: 12px;
      letter-spacing: 0.18em;
      text-transform: uppercase;
      text-decoration: none;
      padding: 14px 26px;
      border: 1px solid transparent;
      cursor: pointer;
      transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
    }
    .btn:hover { transform: translateY(-2px); }

    .hero-cta {
      margin-top: 32px;
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }

    /* Primary — mint on the dark teal hero */
    .btn-primary {
      background: #7fcfc6;
      color: #143f3a;
      border-color: #7fcfc6;
    }
    .btn-primary:hover { background: #9bdcd4; border-color: #9bdcd4; }

    /* Secondary — outline on the dark teal hero */
    .btn-secondary {
      background: transparent;
      color: #7fcfc6;
      border-color: rgba(127,207,198,0.5);
    }
    .btn-secondary:hover { background: #7fcfc6; color: #143f3a; border-color: #7fcfc6; }

    /* Outline — teal on cream sections */
    #tab-competition .btn-outline {
      background: transparent;
      color: var(--c-teal);
      border-color: var(--c-teal);
    }
    #tab-competition .btn-outline:hover { background: var(--c-teal); color: var(--c-cream); }

    /* Two-up lot diagrams */
    .comp-diagram-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
      margin-top: 40px;
      align-items: stretch;
    }
    .comp-diagram-grid .comp-diagram-wrap {
      margin-top: 0;
      display: flex;
      flex-direction: column;
    }
    /* auto top margin centers the building in the free space above the caption */
    .comp-diagram-grid .comp-diagram-wrap img {
      margin-top: auto;
    }
    /* auto top margin pins the caption to the bottom so both figures align;
       min-height reserves equal space for one- or two-line captions */
    .comp-diagram-grid .comp-diagram-caption {
      margin-top: auto;
      min-height: 2.4em;
      display: flex;
      align-items: flex-end;
      justify-content: center;
    }

    /* Brief / registration link row */
    .brief-link {
      margin-top: 16px;
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }

    /* Single / double lot detail cards */
    .lot-detail-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
      margin-top: 40px;
    }

    @media (max-width: 640px) {
      .comp-diagram-grid { grid-template-columns: 1fr; }
      .lot-detail-grid { grid-template-columns: 1fr; }
    }

    /* ===== Stacked horizontal bars (criteria, sponsors) ===== */
    .bar-list {
      margin-top: 32px;
      display: flex;
      flex-direction: column;
      gap: 2px;
    }

    /* Criteria — number + title on the left, description on the right */
    .criteria-bar {
      display: grid;
      grid-template-columns: 240px 1fr;
      gap: 32px;
      align-items: baseline;
      background: var(--c-cream-dark);
      border: 1px solid var(--c-grid);
      border-left: 2px solid var(--c-teal);
      padding: 26px 30px;
      transition: border-color 0.2s, background 0.2s;
    }
    .criteria-bar:hover { border-color: var(--c-teal-light); border-left-color: var(--c-teal); }
    .criteria-bar-label {
      font-family: var(--mono);
      font-size: 12px;
      letter-spacing: 0.16em;
      text-transform: uppercase;
      color: var(--c-teal);
      line-height: 1.5;
    }
    .criteria-bar-value {
      font-size: 15px;
      font-weight: 300;
      line-height: 1.6;
      color: #2a4a47;
    }

    /* Sponsors — logo + name on the left, tier on the right */
    .sponsor-bar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      background: var(--c-cream-dark);
      border: 1px solid var(--c-grid);
      border-left: 2px solid var(--c-teal);
      padding: 16px 30px;
      transition: border-color 0.2s, background 0.2s;
    }
    .sponsor-bar:hover { border-color: var(--c-teal-light); border-left-color: var(--c-teal); }
    .sponsor-bar-main {
      display: flex;
      align-items: center;
      gap: 22px;
      min-width: 0;
    }
    /* White chip normalizes logos with different native backgrounds */
    .sponsor-logo-chip {
      flex: 0 0 auto;
      width: 104px;
      height: 56px;
      background: #fff;
      border: 1px solid var(--c-grid);
      border-radius: 3px;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 8px 12px;
    }
    /* Dark chip for reversed (white) logos so they stay legible */
    .sponsor-logo-chip--dark {
      background: var(--c-teal-dark);
      border-color: var(--c-teal-dark);
    }
    .sponsor-logo {
      max-width: 100%;
      max-height: 100%;
      width: auto;
      height: auto;
      object-fit: contain;
      display: block;
    }
    .sponsor-bar-name {
      font-size: 19px;
      font-weight: 400;
      color: var(--c-teal-dark);
    }
    .sponsor-bar-tier {
      font-family: var(--mono);
      font-size: 11px;
      letter-spacing: 0.16em;
      text-transform: uppercase;
      color: #6a8c89;
      white-space: nowrap;
      text-align: right;
    }

    @media (max-width: 560px) {
      .sponsor-logo-chip { width: 76px; height: 46px; }
      .sponsor-bar-main { gap: 14px; }
    }

    @media (max-width: 640px) {
      .criteria-bar { grid-template-columns: 1fr; gap: 10px; }
    }